/* roulang page: index */
:root {
            --primary-black: #1A1A1A;
            --secondary-dark: #262626;
            --accent-orange: #F2A03D;
            --accent-orange-hover: #D98828;
            --bg-ice: #F7F7F5;
            --bg-white: #FFFFFF;
            --text-warm: #2A2A2A;
            --text-secondary: #5C5C5C;
            --border-light: #E8E8E4;
            --success: #3F7D5A;
            --warning: #C17B3C;
            --error: #B5493F;
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 10px;
            --radius-xs: 4px;
            --shadow-card: 0 2px 12px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 8px 28px rgba(0, 0, 0, 0.12);
            --shadow-deep: 0 4px 24px rgba(0, 0, 0, 0.18);
            --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-en: "Inter", "SF Pro Display", sans-serif;
            --section-padding-desktop: 96px;
            --section-padding-mobile: 56px;
            --container-max: 1200px;
            --transition: 0.25s ease;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-cn);
            font-size: 16px;
            font-weight: 400;
            line-height: 1.8;
            color: var(--text-warm);
            background-color: var(--bg-ice);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition), background-color var(--transition), border-color var(--transition), opacity var(--transition);
        }

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            font-size: inherit;
        }

        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            outline: none;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 32px;
            padding-right: 32px;
        }

        section {
            padding: var(--section-padding-desktop) 0;
            position: relative;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            transition: box-shadow 0.3s ease;
        }
        .site-header.scrolled {
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.08);
        }
        .nav-inner {
            display: flex;
            align-items: center;
            gap: 20px;
            padding: 12px 32px;
            max-width: var(--container-max);
            margin: 0 auto;
            flex-wrap: nowrap;
            position: relative;
            z-index: 1001;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
            font-weight: 800;
            font-size: 18px;
            color: var(--primary-black);
            letter-spacing: -0.01em;
            white-space: nowrap;
        }
        .nav-logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: var(--primary-black);
            color: var(--accent-orange);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 800;
            flex-shrink: 0;
        }
        .nav-logo span {
            color: var(--primary-black);
        }
        .nav-logo .highlight {
            color: var(--accent-orange);
        }

        .nav-search {
            flex: 1;
            max-width: 560px;
            min-width: 200px;
            display: flex;
            align-items: center;
            background: var(--bg-ice);
            border: 1px solid var(--border-light);
            border-radius: 999px;
            padding: 10px 20px;
            gap: 10px;
            transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
            cursor: text;
        }
        .nav-search:focus-within {
            background: var(--bg-white);
            border-color: var(--accent-orange);
            box-shadow: 0 0 0 3px rgba(242, 160, 61, 0.25);
        }
        .nav-search svg {
            flex-shrink: 0;
            width: 18px;
            height: 18px;
            color: var(--text-secondary);
        }
        .nav-search input {
            flex: 1;
            border: none;
            background: transparent;
            font-size: 14px;
            color: var(--text-warm);
            min-width: 0;
        }
        .nav-search input::placeholder {
            color: var(--text-secondary);
            font-size: 14px;
        }
        .nav-search .search-filter-hint {
            flex-shrink: 0;
            font-size: 12px;
            color: var(--text-secondary);
            border-left: 1px solid var(--border-light);
            padding-left: 12px;
            white-space: nowrap;
            user-select: none;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 18px;
            flex-shrink: 0;
            font-size: 14px;
            font-weight: 500;
        }
        .nav-links a {
            color: var(--text-warm);
            position: relative;
            padding: 4px 0;
            white-space: nowrap;
            transition: color 0.2s ease;
        }
        .nav-links a::after {
            content: "";
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-orange);
            transition: width 0.25s ease;
        }
        .nav-links a:hover,
        .nav-links a.active {
            color: var(--primary-black);
        }
        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }
        .nav-links a.active {
            font-weight: 600;
        }

        .nav-hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: 8px;
            transition: background 0.2s ease;
            cursor: pointer;
            flex-shrink: 0;
        }
        .nav-hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--primary-black);
            border-radius: 2px;
            transition: transform 0.3s ease, opacity 0.3s ease;
        }
        .nav-hamburger.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .nav-hamburger.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .nav-mobile-menu {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.08);
            padding: 16px 32px 24px;
            z-index: 1000;
            flex-direction: column;
            gap: 8px;
        }
        .nav-mobile-menu.open {
            display: flex;
        }
        .nav-mobile-menu a {
            padding: 12px 16px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-warm);
            border-radius: 8px;
            transition: background 0.2s ease;
        }
        .nav-mobile-menu a:hover,
        .nav-mobile-menu a.active {
            background: var(--bg-ice);
            color: var(--primary-black);
            font-weight: 600;
        }
        .nav-mobile-search {
            display: flex;
            align-items: center;
            background: var(--bg-ice);
            border: 1px solid var(--border-light);
            border-radius: 999px;
            padding: 10px 16px;
            gap: 8px;
            margin-bottom: 8px;
        }
        .nav-mobile-search input {
            flex: 1;
            border: none;
            background: transparent;
            font-size: 14px;
        }

        /* ===== 按钮系统 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 15px;
            line-height: 1.5;
            transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease, transform 0.15s ease;
            white-space: nowrap;
            user-select: none;
            cursor: pointer;
        }
        .btn:focus-visible {
            outline: none;
            box-shadow: 0 0 0 3px rgba(242, 160, 61, 0.4);
        }
        .btn:active {
            transform: translateY(1px);
        }
        .btn-primary {
            background: var(--accent-orange);
            color: var(--primary-black);
            border: 1.5px solid var(--accent-orange);
        }
        .btn-primary:hover {
            background: var(--accent-orange-hover);
            border-color: var(--accent-orange-hover);
            color: var(--primary-black);
            box-shadow: 0 4px 16px rgba(242, 160, 61, 0.35);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary-black);
            border: 1.5px solid var(--primary-black);
        }
        .btn-outline:hover {
            background: var(--primary-black);
            color: var(--bg-white);
            border-color: var(--primary-black);
        }
        .btn-light-outline {
            background: transparent;
            color: #ffffff;
            border: 1.5px solid rgba(255, 255, 255, 0.7);
        }
        .btn-light-outline:hover {
            background: rgba(255, 255, 255, 0.15);
            border-color: #ffffff;
            color: #ffffff;
        }
        .btn-text-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--text-warm);
            font-weight: 600;
            font-size: 15px;
            position: relative;
            padding-bottom: 4px;
            cursor: pointer;
        }
        .btn-text-link::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-orange);
            transition: width 0.25s ease;
        }
        .btn-text-link:hover::after {
            width: 100%;
        }
        .btn-text-link .arrow {
            transition: transform 0.2s ease;
            display: inline-block;
            font-size: 14px;
        }
        .btn-text-link:hover .arrow {
            transform: translateX(4px);
        }

        /* ===== 徽章 ===== */
        .badge {
            display: inline-flex;
            align-items: center;
            padding: 4px 12px;
            border-radius: var(--radius-xs);
            font-size: 12px;
            font-weight: 500;
            letter-spacing: 0.02em;
            line-height: 1.5;
            white-space: nowrap;
        }
        .badge-dark {
            background: var(--primary-black);
            color: #ffffff;
        }
        .badge-orange-border {
            background: transparent;
            color: var(--accent-orange);
            border: 1px solid var(--accent-orange);
        }
        .badge-gray {
            background: #EDEDEA;
            color: var(--text-secondary);
        }
        .badge-success {
            background: var(--success);
            color: #ffffff;
        }

        /* ===== 板块标题 ===== */
        .section-head {
            margin-bottom: 40px;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .section-head .section-kicker {
            font-size: 14px;
            font-weight: 600;
            color: var(--accent-orange);
            text-transform: uppercase;
            letter-spacing: 0.06em;
        }
        .section-head h2 {
            font-size: 30px;
            font-weight: 700;
            line-height: 1.25;
            color: var(--primary-black);
            letter-spacing: -0.01em;
        }
        .section-head p {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 640px;
            line-height: 1.8;
        }
        .section-head-center {
            text-align: center;
            align-items: center;
        }
        .section-head-center p {
            margin: 0 auto;
        }

        .highlight-underline {
            position: relative;
            white-space: nowrap;
        }
        .highlight-underline::after {
            content: "";
            position: absolute;
            bottom: 4px;
            left: 0;
            width: 100%;
            height: 3px;
            background: var(--accent-orange);
            border-radius: 2px;
        }

        /* ===== Hero ===== */
        .hero-fullwidth {
            position: relative;
            min-height: 600px;
            padding: 0;
            overflow: hidden;
            display: flex;
            align-items: flex-end;
            background: var(--primary-black);
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center 40%;
            background-repeat: no-repeat;
            z-index: 1;
            opacity: 0.85;
        }
        .hero-bg::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(26, 26, 26, 0.45) 0%, rgba(26, 26, 26, 0.65) 55%, rgba(26, 26, 26, 0.85) 100%);
        }
        .hero-overlay {
            position: relative;
            z-index: 2;
            padding: 80px 0 48px;
            width: 100%;
            color: #ffffff;
        }
        .hero-overlay .container {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }
        .hero-countdown-bar {
            display: inline-flex;
            align-items: center;
            gap: 16px;
            background: rgba(0, 0, 0, 0.55);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 999px;
            padding: 10px 24px;
            align-self: flex-start;
            flex-wrap: wrap;
        }
        .hero-countdown-bar .label {
            font-size: 13px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.85);
            letter-spacing: 0.04em;
        }
        .hero-countdown-bar .timer {
            display: flex;
            align-items: center;
            gap: 6px;
            font-family: var(--font-en);
            font-weight: 800;
            font-size: 22px;
            color: var(--accent-orange);
            letter-spacing: 0.02em;
        }
        .hero-countdown-bar .timer .unit {
            font-size: 12px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.7);
            letter-spacing: 0.04em;
        }
        .hero-title {
            font-size: 48px;
            font-weight: 800;
            line-height: 1.15;
            letter-spacing: -0.02em;
            color: #ffffff;
            max-width: 720px;
        }
        .hero-sub {
            font-size: 17px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.88);
            max-width: 560px;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            align-items: center;
        }
        .hero-stats {
            display: flex;
            gap: 32px;
            flex-wrap: wrap;
            align-items: center;
        }
        .hero-stats .stat-item {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }
        .hero-stats .stat-value {
            font-family: var(--font-en);
            font-size: 32px;
            font-weight: 800;
            color: #ffffff;
            letter-spacing: -0.01em;
        }
        .hero-stats .stat-label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.72);
            letter-spacing: 0.05em;
        }

        /* ===== 合集目录 ===== */
        .collection-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 24px;
        }
        .collection-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
            transition: box-shadow 0.25s ease, transform 0.25s ease;
            cursor: pointer;
            display: flex;
            flex-direction: column;
        }
        .collection-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .collection-card .card-img-wrap {
            position: relative;
            aspect-ratio: 3 / 2;
            overflow: hidden;
        }
        .collection-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s ease;
        }
        .collection-card:hover .card-img-wrap img {
            transform: scale(1.03);
        }
        .collection-card .card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            z-index: 2;
        }
        .collection-card .card-body {
            padding: 20px;
            display: flex;
            flex-direction: column;
            gap: 8px;
            flex: 1;
        }
        .collection-card .card-body h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--primary-black);
            line-height: 1.4;
        }
        .collection-card .card-body p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
            flex: 1;
        }
        .collection-card .card-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            color: var(--text-secondary);
        }
        .collection-card .card-meta .count {
            font-weight: 600;
            color: var(--accent-orange);
            font-family: var(--font-en);
        }

        /* ===== 相关推荐 ===== */
        .recommend-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 24px;
        }
        .recommend-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
            transition: box-shadow 0.25s ease, transform 0.25s ease;
            display: flex;
            flex-direction: column;
            cursor: pointer;
        }
        .recommend-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .recommend-card .card-img-wrap {
            position: relative;
            aspect-ratio: 3 / 2;
            overflow: hidden;
        }
        .recommend-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s ease;
        }
        .recommend-card:hover .card-img-wrap img {
            transform: scale(1.03);
        }
        .recommend-card .card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            z-index: 2;
        }
        .recommend-card .card-body {
            padding: 20px;
            display: flex;
            flex-direction: column;
            gap: 8px;
            flex: 1;
        }
        .recommend-card .card-body h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--primary-black);
            line-height: 1.4;
        }
        .recommend-card .card-body p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
            flex: 1;
        }
        .recommend-card .card-meta {
            display: flex;
            gap: 12px;
            font-size: 12px;
            color: var(--text-secondary);
            flex-wrap: wrap;
        }

        /* ===== 资讯区 ===== */
        .news-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 32px;
        }
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 0;
        }
        .news-item {
            display: flex;
            gap: 20px;
            padding: 20px 0;
            border-bottom: 1px solid var(--border-light);
            align-items: flex-start;
            transition: background 0.2s ease;
            cursor: pointer;
        }
        .news-item:first-child {
            padding-top: 0;
        }
        .news-item:hover {
            background: rgba(247, 247, 245, 0.5);
        }
        .news-date-block {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            background: var(--primary-black);
            color: #ffffff;
            border-radius: 8px;
            padding: 8px 14px;
            min-width: 64px;
            text-align: center;
        }
        .news-date-block .month-day {
            font-family: var(--font-en);
            font-size: 16px;
            font-weight: 800;
            color: var(--accent-orange);
            letter-spacing: 0.02em;
        }
        .news-date-block .year {
            font-size: 11px;
            color: rgba(255, 255, 255, 0.7);
            letter-spacing: 0.04em;
        }
        .news-content {
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 6px;
        }
        .news-content h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--primary-black);
            line-height: 1.5;
        }
        .news-content p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        .news-content .btn-text-link {
            align-self: flex-start;
            font-size: 13px;
        }
        .news-sidebar {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .news-sidebar-widget {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 20px;
            border: 1px solid var(--border-light);
        }
        .news-sidebar-widget h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--primary-black);
            margin-bottom: 12px;
        }
        .news-sidebar-widget .hot-link {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 8px 0;
            font-size: 14px;
            color: var(--text-warm);
            transition: color 0.2s ease;
        }
        .news-sidebar-widget .hot-link:hover {
            color: var(--accent-orange);
        }
        .news-sidebar-widget .hot-link .num {
            font-family: var(--font-en);
            font-weight: 800;
            font-size: 15px;
            color: var(--accent-orange);
            min-width: 22px;
        }

        /* ===== 收藏分享 ===== */
        .collect-share-section {
            background: var(--secondary-dark);
            color: #ffffff;
            padding: var(--section-padding-desktop) 0;
        }
        .collect-share-section .section-head h2 {
            color: #ffffff;
        }
        .collect-share-section .section-head p {
            color: rgba(255, 255, 255, 0.75);
        }
        .share-feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 20px;
        }
        .share-feature-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-md);
            padding: 22px;
            transition: background 0.25s ease, border-color 0.25s ease;
        }
        .share-feature-card:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.25);
        }
        .share-feature-card .icon-box {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--accent-orange);
            color: var(--primary-black);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            margin-bottom: 12px;
        }
        .share-feature-card h3 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 6px;
            color: #ffffff;
        }
        .share-feature-card p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.6;
        }

        /* ===== 数据指标 ===== */
        .metrics-band {
            background: var(--primary-black);
            color: #ffffff;
            padding: 56px 0;
        }
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 32px;
            text-align: center;
        }
        .metric-item .metric-value {
            font-family: var(--font-en);
            font-size: 44px;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--accent-orange);
            line-height: 1.1;
        }
        .metric-item .metric-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
            letter-spacing: 0.05em;
            margin-top: 4px;
        }
        .metric-item .metric-desc {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.55);
            margin-top: 4px;
        }

        /* ===== 深度内容区 ===== */
        .deep-section {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 48px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
        }
        .deep-section h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--primary-black);
            margin-bottom: 16px;
            line-height: 1.3;
        }
        .deep-section h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--primary-black);
            margin: 20px 0 10px;
            line-height: 1.4;
        }
        .deep-section p {
            font-size: 16px;
            color: var(--text-warm);
            line-height: 1.85;
            margin-bottom: 12px;
        }
        .deep-section .deep-img {
            margin: 20px 0;
            border-radius: var(--radius-md);
            overflow: hidden;
            aspect-ratio: 21 / 9;
            background: #EDEDEA;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            font-size: 14px;
            border: 1px solid var(--border-light);
        }
        .deep-section .deep-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .deep-section blockquote {
            border-left: 3px solid var(--accent-orange);
            padding-left: 16px;
            font-size: 16px;
            color: var(--text-secondary);
            font-style: italic;
            line-height: 1.7;
            margin: 16px 0;
        }

        /* ===== 节日战役区 ===== */
        .campaign-banner {
            background: linear-gradient(135deg, #F2A03D 0%, #D98828 100%);
            border-radius: var(--radius-lg);
            padding: 48px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
            color: var(--primary-black);
            overflow: hidden;
            position: relative;
        }
        .campaign-banner::before {
            content: "";
            position: absolute;
            top: -50%;
            right: -10%;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.18);
            pointer-events: none;
        }
        .campaign-banner .campaign-text {
            flex: 1;
            min-width: 260px;
            position: relative;
            z-index: 1;
        }
        .campaign-banner h2 {
            font-size: 26px;
            font-weight: 800;
            margin-bottom: 8px;
            line-height: 1.3;
        }
        .campaign-banner p {
            font-size: 15px;
            font-weight: 500;
            line-height: 1.7;
        }
        .campaign-banner .campaign-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }
        .campaign-banner .btn {
            background: var(--primary-black);
            color: #ffffff;
            border: 1.5px solid var(--primary-black);
        }
        .campaign-banner .btn:hover {
            background: #ffffff;
            color: var(--primary-black);
            border-color: #ffffff;
        }
        .campaign-banner .btn-light-outline {
            background: transparent;
            color: var(--primary-black);
            border-color: rgba(0, 0, 0, 0.4);
        }
        .campaign-banner .btn-light-outline:hover {
            background: rgba(255, 255, 255, 0.5);
            border-color: var(--primary-black);
            color: var(--primary-black);
        }

        /* ===== 口碑气泡 ===== */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
            gap: 20px;
        }
        .testimonial-bubble {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 20px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            position: relative;
            transition: box-shadow 0.25s ease, transform 0.25s ease;
        }
        .testimonial-bubble:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .testimonial-bubble .quote-mark {
            font-family: var(--font-en);
            font-size: 36px;
            font-weight: 800;
            color: var(--accent-orange);
            line-height: 1;
            opacity: 0.5;
            margin-bottom: 8px;
        }
        .testimonial-bubble p {
            font-size: 14px;
            color: var(--text-warm);
            line-height: 1.7;
            margin-bottom: 12px;
        }
        .testimonial-bubble .author {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .testimonial-bubble .author-avatar {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--primary-black);
            color: var(--accent-orange);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            font-weight: 700;
        }
        .testimonial-bubble .author-name {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary-black);
        }
        .testimonial-bubble .author-role {
            font-size: 12px;
            color: var(--text-secondary);
        }

        /* ===== 时间线 ===== */
        .timeline {
            position: relative;
            padding: 20px 0;
        }
        .timeline::before {
            content: "";
            position: absolute;
            left: 50%;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--border-light);
            transform: translateX(-50%);
        }
        .timeline-item {
            display: flex;
            justify-content: flex-end;
            padding-right: calc(50% + 30px);
            position: relative;
            margin-bottom: 32px;
        }
        .timeline-item:nth-child(even) {
            justify-content: flex-start;
            padding-right: 0;
            padding-left: calc(50% + 30px);
        }
        .timeline-item .timeline-dot {
            position: absolute;
            top: 6px;
            left: 50%;
            transform: translateX(-50%);
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: var(--accent-orange);
            border: 3px solid #ffffff;
            box-shadow: 0 0 0 3px var(--border-light);
            z-index: 2;
        }
        .timeline-item .timeline-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 16px 20px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            max-width: 420px;
        }
        .timeline-item .timeline-card h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--primary-black);
        }
        .timeline-item .timeline-card p {
            font-size: 13px;
            color: var(--text-secondary);
            margin-top: 4px;
        }
        .timeline-item .timeline-card .time-label {
            font-family: var(--font-en);
            font-size: 12px;
            font-weight: 700;
            color: var(--accent-orange);
            letter-spacing: 0.04em;
        }

        /* ===== 会员权益 ===== */
        .benefit-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
            gap: 20px;
        }
        .benefit-card {
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 24px;
            text-align: center;
            transition: box-shadow 0.25s ease, transform 0.25s ease;
        }
        .benefit-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .benefit-card .benefit-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: var(--bg-ice);
            color: var(--accent-orange);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin: 0 auto 12px;
        }
        .benefit-card h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--primary-black);
            margin-bottom: 6px;
        }
        .benefit-card p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        .benefit-cta {
            text-align: center;
            margin-top: 32px;
        }

        /* ===== 品牌介绍 ===== */
        .brand-section {
            background: var(--bg-white);
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
        }
        .brand-inner {
            display: flex;
            gap: 40px;
            align-items: center;
            flex-wrap: wrap;
        }
        .brand-text {
            flex: 1;
            min-width: 280px;
        }
        .brand-text h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--primary-black);
            margin-bottom: 16px;
        }
        .brand-text p {
            font-size: 16px;
            color: var(--text-warm);
            line-height: 1.85;
            margin-bottom: 12px;
        }
        .brand-visual {
            flex-shrink: 0;
            width: 320px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            aspect-ratio: 4 / 3;
            background: #EDEDEA;
            border: 1px solid var(--border-light);
        }
        .brand-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        /* ===== FAQ ===== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: box-shadow 0.25s ease, border-color 0.25s ease;
        }
        .faq-item.active {
            border-color: var(--accent-orange);
            box-shadow: var(--shadow-card);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 20px;
            cursor: pointer;
            font-weight: 600;
            font-size: 15px;
            color: var(--primary-black);
            gap: 12px;
            user-select: none;
            transition: color 0.2s ease;
        }
        .faq-question:hover {
            color: var(--accent-orange);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            border: 1.5px solid var(--border-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            transition: transform 0.25s ease, border-color 0.25s ease, background 0.25s ease;
        }
        .faq-item.active .faq-question .faq-icon {
            transform: rotate(180deg);
            border-color: var(--accent-orange);
            background: var(--accent-orange);
            color: var(--primary-black);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            padding: 0 20px;
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.7;
            border-left: 3px solid transparent;
        }
        .faq-item.active .faq-answer {
            max-height: 400px;
            padding: 0 20px 16px;
            border-left-color: var(--accent-orange);
        }
        .faq-answer p {
            padding-left: 4px;
        }

        /* ===== 联系/CTA ===== */
        .cta-section {
            background: var(--primary-black);
            color: #ffffff;
            padding: var(--section-padding-desktop) 0;
        }
        .cta-section .section-head h2 {
            color: #ffffff;
        }
        .cta-section .section-head p {
            color: rgba(255, 255, 255, 0.75);
        }
        .cta-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: start;
        }
        .cta-form {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-lg);
            padding: 32px;
        }
        .cta-form .form-group {
            margin-bottom: 16px;
        }
        .cta-form label {
            display: block;
            font-size: 14px;
            font-weight: 500;
            margin-bottom: 6px;
            color: rgba(255, 255, 255, 0.85);
        }
        .cta-form input,
        .cta-form textarea {
            width: 100%;
            padding: 12px 14px;
            border-radius: 8px;
            border: 1px solid rgba(255, 255, 255, 0.2);
            background: rgba(255, 255, 255, 0.08);
            color: #ffffff;
            font-size: 14px;
            transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
        }
        .cta-form input::placeholder,
        .cta-form textarea::placeholder {
            color: rgba(255, 255, 255, 0.45);
        }
        .cta-form input:focus,
        .cta-form textarea:focus {
            border-color: var(--accent-orange);
            box-shadow: 0 0 0 3px rgba(242, 160, 61, 0.25);
            background: rgba(255, 255, 255, 0.12);
            outline: none;
        }
        .cta-form textarea {
            resize: vertical;
            min-height: 100px;
        }
        .cta-form .btn-primary {
            width: 100%;
            margin-top: 8px;
        }
        .cta-contact-info {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .cta-contact-info .info-item {
            display: flex;
            gap: 12px;
            align-items: flex-start;
        }
        .cta-contact-info .info-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: var(--accent-orange);
            color: var(--primary-black);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 16px;
        }
        .cta-contact-info .info-text h4 {
            font-size: 14px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 2px;
        }
        .cta-contact-info .info-text p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.6;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--primary-black);
            color: rgba(255, 255, 255, 0.75);
            padding: 56px 0 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand .nav-logo {
            color: #ffffff;
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.7;
        }
        .footer-col h4 {
            font-size: 14px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }
        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 6px;
        }
        .footer-col ul li a {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            transition: color 0.2s ease, padding-left 0.2s ease;
            padding-left: 0;
        }
        .footer-col ul li a:hover {
            color: var(--accent-orange);
            padding-left: 6px;
        }
        .footer-search {
            display: flex;
            gap: 8px;
            margin-top: 8px;
        }
        .footer-search input {
            flex: 1;
            padding: 10px 14px;
            border-radius: 8px;
            border: 1px solid rgba(255, 255, 255, 0.2);
            background: rgba(255, 255, 255, 0.08);
            color: #ffffff;
            font-size: 13px;
        }
        .footer-search input::placeholder {
            color: rgba(255, 255, 255, 0.45);
        }
        .footer-search .btn {
            padding: 10px 16px;
            font-size: 13px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: space-between;
            align-items: center;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 12px;
            transition: color 0.2s ease;
        }
        .footer-bottom a:hover {
            color: var(--accent-orange);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .nav-inner {
                gap: 14px;
                padding: 10px 20px;
            }
            .nav-search {
                max-width: 360px;
                padding: 8px 14px;
            }
            .nav-links {
                gap: 12px;
                font-size: 13px;
            }
            .nav-links a {
                white-space: nowrap;
            }
            .hero-title {
                font-size: 40px;
            }
            .news-layout {
                grid-template-columns: 1fr;
            }
            .news-sidebar {
                display: grid;
                grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
                gap: 16px;
            }
            .cta-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .brand-inner {
                flex-direction: column;
                align-items: stretch;
            }
            .brand-visual {
                width: 100%;
            }
        }

        @media (max-width: 768px) {
            section {
                padding: var(--section-padding-mobile) 0;
            }
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .nav-inner {
                padding: 8px 16px;
                gap: 10px;
            }
            .nav-search {
                display: none;
            }
            .nav-links {
                display: none;
            }
            .nav-hamburger {
                display: flex;
            }
            .nav-mobile-menu {
                padding: 12px 16px 20px;
            }
            .hero-fullwidth {
                min-height: 420px;
            }
            .hero-overlay {
                padding: 48px 0 32px;
            }
            .hero-title {
                font-size: 30px;
                letter-spacing: -0.01em;
            }
            .hero-sub {
                font-size: 15px;
            }
            .hero-stats {
                gap: 16px;
            }
            .hero-stats .stat-value {
                font-size: 24px;
            }
            .hero-countdown-bar .timer {
                font-size: 18px;
            }
            .section-head h2 {
                font-size: 24px;
            }
            .collection-grid {
                grid-template-columns: 1fr;
            }
            .recommend-grid {
                grid-template-columns: 1fr;
            }
            .news-layout {
                gap: 20px;
            }
            .news-item {
                flex-direction: column;
                gap: 12px;
            }
            .news-date-block {
                flex-direction: row;
                gap: 6px;
                min-width: auto;
                padding: 6px 12px;
                align-self: flex-start;
            }
            .share-feature-grid {
                grid-template-columns: 1fr;
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .metric-item .metric-value {
                font-size: 32px;
            }
            .deep-section {
                padding: 24px 20px;
            }
            .deep-section h2 {
                font-size: 22px;
            }
            .campaign-banner {
                padding: 28px 20px;
            }
            .campaign-banner h2 {
                font-size: 22px;
            }
            .testimonial-grid {
                grid-template-columns: 1fr;
            }
            .timeline::before {
                left: 20px;
            }
            .timeline-item,
            .timeline-item:nth-child(even) {
                justify-content: flex-start;
                padding-right: 0;
                padding-left: 46px;
            }
            .timeline-item .timeline-dot {
                left: 20px;
                transform: translateX(-50%);
            }
            .timeline-item .timeline-card {
                max-width: 100%;
            }
            .benefit-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 8px;
                text-align: center;
            }
            .cta-form {
                padding: 20px 16px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media (max-width: 520px) {
            .metrics-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .hero-title {
                font-size: 26px;
            }
            .hero-countdown-bar {
                padding: 8px 14px;
                gap: 8px;
            }
            .hero-countdown-bar .timer {
                font-size: 15px;
            }
            .btn {
                padding: 10px 20px;
                font-size: 14px;
            }
            .section-head h2 {
                font-size: 21px;
            }
        }

/* roulang page: category2 */
:root {
            --primary-black: #1A1A1A;
            --secondary-dark: #262626;
            --accent-orange: #F2A03D;
            --accent-orange-hover: #D98828;
            --bg-ice: #F7F7F5;
            --bg-white: #FFFFFF;
            --text-warm: #2A2A2A;
            --text-secondary: #5C5C5C;
            --border-light: #E8E8E4;
            --success: #3F7D5A;
            --warning: #C17B3C;
            --error: #B5493F;
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 10px;
            --radius-xs: 4px;
            --shadow-card: 0 2px 12px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 8px 28px rgba(0, 0, 0, 0.12);
            --shadow-deep: 0 4px 24px rgba(0, 0, 0, 0.18);
            --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-en: "Inter", "SF Pro Display", sans-serif;
            --section-padding-desktop: 96px;
            --section-padding-mobile: 56px;
            --container-max: 1200px;
            --transition: 0.25s ease;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
            box-sizing: border-box;
        }

        *,
        *::before,
        *::after {
            box-sizing: inherit;
        }

        body {
            font-family: var(--font-cn);
            font-size: 16px;
            font-weight: 400;
            line-height: 1.8;
            color: var(--text-warm);
            background-color: var(--bg-ice);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            margin: 0;
            padding: 0;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition), background-color var(--transition), border-color var(--transition), opacity var(--transition);
        }

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            font-size: inherit;
        }

        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            outline: none;
        }

        ul {
            margin: 0;
            padding: 0;
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            margin: 0;
            padding: 0;
            font-weight: 700;
            line-height: 1.25;
            color: var(--primary-black);
        }

        p {
            margin: 0 0 1em 0;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 32px;
            padding-right: 32px;
        }

        section {
            padding: var(--section-padding-desktop) 0;
            position: relative;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            transition: box-shadow 0.3s ease;
        }

        .site-header.scrolled {
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.08);
        }

        .nav-inner {
            display: flex;
            align-items: center;
            gap: 20px;
            padding: 12px 32px;
            max-width: var(--container-max);
            margin: 0 auto;
            flex-wrap: nowrap;
            position: relative;
            z-index: 1001;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
            font-weight: 800;
            font-size: 18px;
            color: var(--primary-black);
            letter-spacing: -0.01em;
            white-space: nowrap;
        }

        .nav-logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: var(--primary-black);
            color: var(--accent-orange);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 800;
            flex-shrink: 0;
        }

        .nav-logo span {
            color: var(--primary-black);
        }

        .nav-logo .highlight {
            color: var(--accent-orange);
        }

        .nav-search {
            flex: 1;
            max-width: 560px;
            min-width: 200px;
            display: flex;
            align-items: center;
            background: var(--bg-ice);
            border: 1px solid var(--border-light);
            border-radius: 999px;
            padding: 10px 20px;
            gap: 10px;
            transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
            cursor: text;
        }

        .nav-search:focus-within {
            background: var(--bg-white);
            border-color: var(--accent-orange);
            box-shadow: 0 0 0 3px rgba(242, 160, 61, 0.25);
        }

        .nav-search svg {
            flex-shrink: 0;
            width: 18px;
            height: 18px;
            color: var(--text-secondary);
        }

        .nav-search input {
            flex: 1;
            border: none;
            background: transparent;
            font-size: 14px;
            color: var(--text-warm);
            min-width: 0;
        }

        .nav-search input::placeholder {
            color: var(--text-secondary);
            font-size: 14px;
        }

        .nav-search .search-filter-hint {
            flex-shrink: 0;
            font-size: 12px;
            color: var(--text-secondary);
            border-left: 1px solid var(--border-light);
            padding-left: 12px;
            white-space: nowrap;
            user-select: none;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-shrink: 0;
            font-size: 13px;
            font-weight: 500;
            overflow-x: auto;
            scrollbar-width: none;
        }

        .nav-links::-webkit-scrollbar {
            display: none;
        }

        .nav-links a {
            color: var(--text-warm);
            position: relative;
            padding: 4px 0;
            white-space: nowrap;
            transition: color 0.2s ease;
        }

        .nav-links a::after {
            content: "";
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-orange);
            transition: width 0.25s ease;
        }

        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }

        .nav-links a:hover {
            color: var(--accent-orange-hover);
        }

        .nav-links a.active {
            color: var(--accent-orange-hover);
            font-weight: 600;
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 10px;
            z-index: 1002;
            flex-shrink: 0;
        }

        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--primary-black);
            border-radius: 2px;
            transition: transform 0.3s ease, opacity 0.3s ease;
        }

        .nav-toggle.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }

        .nav-toggle.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* ===== 面包屑 ===== */
        .breadcrumb-bar {
            padding: 18px 0 0 0;
            background: var(--bg-ice);
        }

        .breadcrumb-list {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-secondary);
            flex-wrap: wrap;
        }

        .breadcrumb-list a {
            color: var(--text-secondary);
            transition: color 0.2s ease;
        }

        .breadcrumb-list a:hover {
            color: var(--accent-orange-hover);
        }

        .breadcrumb-list .separator {
            color: var(--border-light);
        }

        .breadcrumb-list .current {
            color: var(--primary-black);
            font-weight: 600;
        }

        /* ===== 分类 Hero ===== */
        .category-hero {
            padding: 42px 0 48px 0;
            background: var(--bg-ice);
            position: relative;
        }

        .category-hero-inner {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .category-hero-content h1 {
            font-size: 44px;
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.15;
            margin-bottom: 18px;
            color: var(--primary-black);
        }

        .category-hero-content h1 .accent {
            color: var(--accent-orange);
            border-bottom: 3px solid var(--accent-orange);
            padding-bottom: 2px;
        }

        .category-hero-desc {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.85;
            margin-bottom: 24px;
            max-width: 540px;
        }

        .category-hero-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 28px;
        }

        .category-hero-meta .badge {
            font-size: 12px;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 4px;
            background: var(--primary-black);
            color: #fff;
            letter-spacing: 0.02em;
        }

        .category-hero-meta .badge-outline {
            font-size: 12px;
            font-weight: 500;
            padding: 6px 14px;
            border-radius: 4px;
            background: transparent;
            color: var(--accent-orange-hover);
            border: 1px solid var(--accent-orange);
        }

        .category-hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        .category-hero-image {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-hover);
        }

        .category-hero-image img {
            width: 100%;
            height: 360px;
            object-fit: cover;
            border-radius: var(--radius-lg);
        }

        .category-hero-image .hero-image-badge {
            position: absolute;
            top: 18px;
            right: 18px;
            background: var(--primary-black);
            color: var(--accent-orange);
            font-size: 12px;
            font-weight: 700;
            padding: 8px 16px;
            border-radius: 4px;
            letter-spacing: 0.04em;
        }

        /* ===== 限时训练计划条 ===== */
        .flash-deal {
            background: var(--primary-black);
            padding: 18px 0;
            position: relative;
            overflow: hidden;
        }

        .flash-deal-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }

        .flash-deal-label {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #fff;
            font-weight: 700;
            font-size: 15px;
            white-space: nowrap;
        }

        .flash-deal-label .icon-pulse {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--accent-orange);
            animation: pulse 1.5s infinite;
            flex-shrink: 0;
        }

        @keyframes pulse {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.5;
                transform: scale(1.5);
            }
        }

        .flash-countdown {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #fff;
        }

        .flash-countdown .time-box {
            background: var(--secondary-dark);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 6px;
            padding: 6px 10px;
            font-family: var(--font-en);
            font-weight: 700;
            font-size: 18px;
            color: var(--accent-orange);
            min-width: 48px;
            text-align: center;
        }

        .flash-countdown .time-sep {
            color: rgba(255, 255, 255, 0.5);
            font-weight: 700;
        }

        .flash-deal-cta {
            flex-shrink: 0;
        }

        /* ===== 板块标题 ===== */
        .section-header {
            margin-bottom: 36px;
        }

        .section-header .section-kicker {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            color: var(--accent-orange-hover);
            margin-bottom: 8px;
        }

        .section-header h2 {
            font-size: 30px;
            font-weight: 700;
            line-height: 1.25;
            letter-spacing: -0.01em;
            color: var(--primary-black);
            margin-bottom: 10px;
        }

        .section-header .section-sub {
            font-size: 15px;
            color: var(--text-secondary);
            max-width: 620px;
            line-height: 1.7;
        }

        /* ===== 筛选栏 ===== */
        .filter-toolbar {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
            margin-bottom: 28px;
        }

        .filter-toolbar .filter-label {
            font-size: 13px;
            color: var(--text-secondary);
            font-weight: 500;
            margin-right: 4px;
            white-space: nowrap;
        }

        .filter-btn {
            font-size: 13px;
            font-weight: 500;
            padding: 8px 16px;
            border-radius: 999px;
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            color: var(--text-warm);
            transition: all 0.25s ease;
            cursor: pointer;
            white-space: nowrap;
        }

        .filter-btn:hover {
            border-color: var(--accent-orange);
            color: var(--accent-orange-hover);
        }

        .filter-btn.active {
            background: var(--primary-black);
            border-color: var(--primary-black);
            color: #fff;
        }

        /* ===== 卡片网格 ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .training-card {
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: transform 0.25s ease, box-shadow 0.25s ease;
            display: flex;
            flex-direction: column;
        }

        .training-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        .training-card-image {
            position: relative;
            overflow: hidden;
            aspect-ratio: 3 / 2;
            background: var(--bg-ice);
        }

        .training-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .training-card:hover .training-card-image img {
            transform: scale(1.04);
        }

        .training-card-image .card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--primary-black);
            color: #fff;
            font-size: 11px;
            font-weight: 600;
            padding: 5px 10px;
            border-radius: 4px;
            letter-spacing: 0.03em;
            z-index: 2;
        }

        .training-card-image .card-badge.orange {
            background: var(--accent-orange);
            color: var(--primary-black);
        }

        .training-card-body {
            padding: 18px 20px 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .training-card-body h3 {
            font-size: 17px;
            font-weight: 700;
            line-height: 1.35;
            margin-bottom: 8px;
            color: var(--primary-black);
        }

        .training-card-body .card-summary {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 14px;
            flex: 1;
        }

        .training-card-body .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            flex-wrap: wrap;
            font-size: 12px;
            color: var(--text-secondary);
            border-top: 1px solid var(--border-light);
            padding-top: 12px;
        }

        .training-card-body .card-meta .meta-tag {
            background: var(--bg-ice);
            border-radius: 4px;
            padding: 3px 8px;
            font-weight: 500;
        }

        .training-card-body .card-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary-black);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: color 0.2s ease;
        }

        .training-card-body .card-link:hover {
            color: var(--accent-orange-hover);
        }

        .training-card-body .card-link .arrow {
            transition: transform 0.2s ease;
        }

        .training-card-body .card-link:hover .arrow {
            transform: translateX(4px);
        }

        /* ===== 深度阅读区 ===== */
        .deep-reading {
            background: var(--bg-white);
        }

        .deep-reading-grid {
            display: grid;
            grid-template-columns: 1fr 340px;
            gap: 48px;
        }

        .deep-reading-main {
            font-size: 16px;
            line-height: 1.9;
            color: var(--text-warm);
        }

        .deep-reading-main h3 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 14px;
            margin-top: 28px;
            color: var(--primary-black);
        }

        .deep-reading-main h3:first-child {
            margin-top: 0;
        }

        .deep-reading-main p {
            margin-bottom: 18px;
            color: var(--text-warm);
        }

        .deep-reading-main .highlight-quote {
            border-left: 4px solid var(--accent-orange);
            padding: 16px 20px;
            background: var(--bg-ice);
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            margin: 24px 0;
            font-size: 15px;
            color: var(--text-secondary);
            font-style: italic;
        }

        .deep-reading-side {
            position: relative;
        }

        .deep-reading-side-card {
            background: var(--bg-ice);
            border-radius: var(--radius-md);
            padding: 24px;
            position: sticky;
            top: 100px;
            border: 1px solid var(--border-light);
        }

        .deep-reading-side-card h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 14px;
            color: var(--primary-black);
        }

        .deep-reading-side-card ul li {
            font-size: 14px;
            color: var(--text-secondary);
            padding: 8px 0;
            border-bottom: 1px solid var(--border-light);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .deep-reading-side-card ul li::before {
            content: "";
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent-orange);
            flex-shrink: 0;
        }

        .deep-reading-image {
            border-radius: var(--radius-md);
            overflow: hidden;
            margin: 24px 0;
        }

        .deep-reading-image img {
            width: 100%;
            height: auto;
            object-fit: cover;
        }

        /* ===== 数据看板 ===== */
        .data-dashboard {
            background: var(--primary-black);
            padding: 64px 0;
        }

        .data-dashboard .section-header h2 {
            color: #fff;
        }

        .data-dashboard .section-header .section-sub {
            color: rgba(255, 255, 255, 0.65);
        }

        .data-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .data-card {
            background: var(--secondary-dark);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            text-align: center;
            transition: transform 0.25s ease;
        }

        .data-card:hover {
            transform: translateY(-3px);
        }

        .data-card .data-number {
            font-family: var(--font-en);
            font-size: 42px;
            font-weight: 800;
            color: var(--accent-orange);
            line-height: 1.1;
            margin-bottom: 8px;
            letter-spacing: -0.01em;
        }

        .data-card .data-label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
            font-weight: 500;
            letter-spacing: 0.02em;
        }

        /* ===== 热门训练列表 ===== */
        .popular-list {
            background: var(--bg-ice);
        }

        .popular-list-items {
            display: flex;
            flex-direction: column;
            gap: 0;
        }

        .popular-list-item {
            display: grid;
            grid-template-columns: 48px 100px 1fr 120px;
            gap: 18px;
            align-items: center;
            padding: 18px 0;
            border-bottom: 1px solid var(--border-light);
            transition: background 0.2s ease;
        }

        .popular-list-item:hover {
            background: rgba(255, 255, 255, 0.6);
        }

        .popular-list-item .rank-number {
            font-family: var(--font-en);
            font-size: 26px;
            font-weight: 800;
            color: var(--border-light);
            text-align: center;
        }

        .popular-list-item:nth-child(1) .rank-number {
            color: var(--accent-orange);
        }

        .popular-list-item:nth-child(2) .rank-number {
            color: #C9A86C;
        }

        .popular-list-item:nth-child(3) .rank-number {
            color: #B8733D;
        }

        .popular-list-item .item-thumb {
            border-radius: var(--radius-sm);
            overflow: hidden;
            aspect-ratio: 1 / 1;
            width: 100px;
            height: 100px;
            background: var(--bg-ice);
        }

        .popular-list-item .item-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .popular-list-item .item-info h3 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 4px;
            line-height: 1.35;
        }

        .popular-list-item .item-info .item-desc {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        .popular-list-item .item-meta {
            text-align: right;
            font-size: 12px;
            color: var(--text-secondary);
        }

        .popular-list-item .item-meta .views {
            display: block;
            font-weight: 600;
            color: var(--primary-black);
        }

        /* ===== 步骤指南 ===== */
        .steps-guide {
            background: var(--bg-white);
        }

        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .step-card {
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 28px 22px;
            position: relative;
            transition: transform 0.25s ease, box-shadow 0.25s ease;
        }

        .step-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }

        .step-card .step-number {
            font-family: var(--font-en);
            font-size: 14px;
            font-weight: 800;
            color: var(--accent-orange-hover);
            margin-bottom: 10px;
            letter-spacing: 0.04em;
        }

        .step-card h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--primary-black);
        }

        .step-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-ice);
        }

        .faq-list {
            max-width: 760px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: box-shadow 0.25s ease;
        }

        .faq-item:hover {
            box-shadow: var(--shadow-card);
        }

        .faq-question {
            padding: 18px 22px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            cursor: pointer;
            user-select: none;
            transition: background 0.2s ease;
            font-weight: 600;
            font-size: 15px;
            color: var(--primary-black);
        }

        .faq-question:hover {
            background: var(--bg-ice);
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            border: 1px solid var(--border-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            color: var(--text-secondary);
            transition: transform 0.3s ease, background 0.3s ease;
        }

        .faq-item.open .faq-question .faq-icon {
            transform: rotate(45deg);
            background: var(--accent-orange);
            border-color: var(--accent-orange);
            color: var(--primary-black);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 22px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 22px 18px;
        }

        /* ===== CTA 表单 ===== */
        .cta-section {
            background: var(--primary-black);
        }

        .cta-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .cta-info h2 {
            color: #fff;
            font-size: 30px;
            font-weight: 700;
            margin-bottom: 14px;
        }

        .cta-info p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 15px;
            line-height: 1.75;
            margin-bottom: 20px;
        }

        .cta-contact-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .cta-contact-list li {
            color: rgba(255, 255, 255, 0.75);
            font-size: 14px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .cta-contact-list li .contact-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent-orange);
            flex-shrink: 0;
        }

        .cta-form {
            background: var(--secondary-dark);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-lg);
            padding: 32px;
        }

        .cta-form .form-group {
            margin-bottom: 18px;
        }

        .cta-form .form-group label {
            display: block;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.8);
            font-weight: 500;
            margin-bottom: 6px;
        }

        .cta-form .form-control {
            width: 100%;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.25);
            border-radius: 8px;
            padding: 12px 14px;
            font-size: 14px;
            color: #fff;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
        }

        .cta-form .form-control::placeholder {
            color: rgba(255, 255, 255, 0.4);
        }

        .cta-form .form-control:focus {
            border-color: var(--accent-orange);
            box-shadow: 0 0 0 3px rgba(242, 160, 61, 0.25);
            outline: none;
        }

        .cta-form textarea.form-control {
            resize: vertical;
            min-height: 100px;
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            transition: all 0.25s ease;
            cursor: pointer;
            text-align: center;
            border: none;
            position: relative;
            line-height: 1.4;
        }

        .btn:active {
            transform: translateY(1px);
        }

        .btn-primary {
            background: var(--accent-orange);
            color: var(--primary-black);
            box-shadow: 0 2px 8px rgba(242, 160, 61, 0.3);
        }

        .btn-primary:hover {
            background: var(--accent-orange-hover);
            box-shadow: 0 4px 16px rgba(242, 160, 61, 0.4);
        }

        .btn-primary:focus {
            box-shadow: 0 0 0 3px rgba(242, 160, 61, 0.4);
            outline: none;
        }

        .btn-outline {
            background: transparent;
            color: var(--primary-black);
            border: 1.5px solid var(--primary-black);
        }

        .btn-outline:hover {
            background: var(--primary-black);
            color: #fff;
        }

        .btn-light {
            background: #fff;
            color: var(--primary-black);
        }

        .btn-light:hover {
            background: rgba(255, 255, 255, 0.85);
        }

        .btn-light-outline {
            background: transparent;
            color: #fff;
            border: 1.5px solid rgba(255, 255, 255, 0.6);
        }

        .btn-light-outline:hover {
            background: #fff;
            color: var(--primary-black);
        }

        .btn-disabled {
            background: #EDEDEA;
            color: #9A9A9A;
            cursor: not-allowed;
        }

        .btn-link-arrow {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary-black);
            padding: 0;
            background: none;
            border: none;
            cursor: pointer;
        }

        .btn-link-arrow .arrow {
            transition: transform 0.2s ease;
        }

        .btn-link-arrow:hover .arrow {
            transform: translateX(4px);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--primary-black);
            color: rgba(255, 255, 255, 0.75);
            padding: 64px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand .nav-logo {
            color: #fff;
            margin-bottom: 14px;
        }

        .footer-brand .nav-logo span {
            color: #fff;
        }

        .footer-brand p {
            font-size: 13px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
            max-width: 340px;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 14px;
            font-weight: 700;
            margin-bottom: 14px;
        }

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 13px;
            transition: color 0.2s ease;
        }

        .footer-col ul li a:hover {
            color: var(--accent-orange);
        }

        .footer-search {
            display: flex;
            gap: 8px;
            margin-bottom: 10px;
        }

        .footer-search input {
            flex: 1;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 6px;
            padding: 10px 14px;
            font-size: 13px;
            color: #fff;
            min-width: 0;
        }

        .footer-search input::placeholder {
            color: rgba(255, 255, 255, 0.4);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.5);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
            transition: color 0.2s ease;
        }

        .footer-bottom a:hover {
            color: var(--accent-orange);
        }

        .footer-bottom .footer-links {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .nav-inner {
                padding: 10px 20px;
                gap: 14px;
            }

            .nav-search {
                max-width: 360px;
            }

            .nav-links {
                gap: 10px;
                font-size: 12px;
            }

            .category-hero-inner {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .category-hero-image img {
                height: 280px;
            }

            .deep-reading-grid {
                grid-template-columns: 1fr;
            }

            .deep-reading-side-card {
                position: static;
            }

            .data-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .cta-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }

        @media (max-width: 768px) {
            .container {
                padding-left: 20px;
                padding-right: 20px;
            }

            section {
                padding: var(--section-padding-mobile) 0;
            }

            .nav-inner {
                flex-wrap: wrap;
                padding: 10px 16px;
                gap: 10px;
            }

            .nav-toggle {
                display: flex;
            }

            .nav-search {
                order: 3;
                max-width: 100%;
                min-width: 100%;
                padding: 8px 16px;
            }

            .nav-search .search-filter-hint {
                display: none;
            }

            .nav-links {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: var(--bg-white);
                flex-direction: column;
                align-items: flex-start;
                padding: 16px 20px;
                gap: 6px;
                border-bottom: 1px solid var(--border-light);
                box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
                max-height: 400px;
                overflow-y: auto;
            }

            .nav-links.open {
                display: flex;
            }

            .nav-links a {
                padding: 8px 0;
                font-size: 14px;
                width: 100%;
            }

            .category-hero-content h1 {
                font-size: 30px;
            }

            .category-hero-image img {
                height: 200px;
            }

            .flash-deal-inner {
                flex-direction: column;
                align-items: flex-start;
                gap: 14px;
            }

            .card-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }

            .deep-reading-main {
                font-size: 15px;
                line-height: 1.8;
            }

            .data-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }

            .data-card .data-number {
                font-size: 32px;
            }

            .popular-list-item {
                grid-template-columns: 32px 64px 1fr;
                gap: 12px;
                padding: 14px 0;
            }

            .popular-list-item .item-thumb {
                width: 64px;
                height: 64px;
            }

            .popular-list-item .item-meta {
                display: none;
            }

            .popular-list-item .rank-number {
                font-size: 20px;
            }

            .steps-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .cta-form {
                padding: 22px 18px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }

            .section-header h2 {
                font-size: 24px;
            }

            .filter-toolbar {
                gap: 8px;
            }

            .filter-btn {
                font-size: 12px;
                padding: 6px 12px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .nav-inner {
                padding: 10px 12px;
            }

            .nav-logo {
                font-size: 16px;
            }

            .nav-logo-icon {
                width: 28px;
                height: 28px;
                font-size: 14px;
                border-radius: 6px;
            }

            .category-hero-content h1 {
                font-size: 26px;
                line-height: 1.25;
            }

            .category-hero-desc {
                font-size: 14px;
            }

            .category-hero-image img {
                height: 160px;
            }

            .section-header h2 {
                font-size: 21px;
            }

            .section-header .section-sub {
                font-size: 13px;
            }

            .data-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }

            .data-card {
                padding: 20px 16px;
            }

            .data-card .data-number {
                font-size: 28px;
            }

            .popular-list-item {
                grid-template-columns: 28px 54px 1fr;
                gap: 10px;
                padding: 12px 0;
            }

            .popular-list-item .item-thumb {
                width: 54px;
                height: 54px;
            }

            .popular-list-item .rank-number {
                font-size: 17px;
            }

            .popular-list-item .item-info h3 {
                font-size: 14px;
            }

            .popular-list-item .item-info .item-desc {
                font-size: 12px;
                -webkit-line-clamp: 2;
            }

            .cta-info h2 {
                font-size: 24px;
            }

            .cta-form {
                padding: 18px 14px;
                border-radius: var(--radius-md);
            }

            .btn {
                font-size: 13px;
                padding: 10px 20px;
            }
        }

/* roulang page: category1 */
/* ===== 设计系统（与首页对齐） ===== */
        :root {
            --primary-black: #1A1A1A;
            --secondary-dark: #262626;
            --accent-orange: #F2A03D;
            --accent-orange-hover: #D98828;
            --bg-ice: #F7F7F5;
            --bg-white: #FFFFFF;
            --text-warm: #2A2A2A;
            --text-secondary: #5C5C5C;
            --border-light: #E8E8E4;
            --success: #3F7D5A;
            --warning: #C17B3C;
            --error: #B5493F;
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 10px;
            --radius-xs: 4px;
            --shadow-card: 0 2px 12px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 8px 28px rgba(0, 0, 0, 0.12);
            --shadow-deep: 0 4px 24px rgba(0, 0, 0, 0.18);
            --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-en: "Inter", "SF Pro Display", sans-serif;
            --section-padding-desktop: 96px;
            --section-padding-mobile: 56px;
            --container-max: 1200px;
            --transition: 0.25s ease;
        }

        /* ===== 基础 Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-cn);
            font-size: 16px;
            font-weight: 400;
            line-height: 1.8;
            color: var(--text-warm);
            background-color: var(--bg-ice);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition), background-color var(--transition), border-color var(--transition), opacity var(--transition);
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            font-size: inherit;
        }
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            outline: none;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 32px;
            padding-right: 32px;
        }
        section {
            padding: var(--section-padding-desktop) 0;
            position: relative;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            transition: box-shadow 0.3s ease;
        }
        .site-header.scrolled {
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.08);
        }
        .nav-inner {
            display: flex;
            align-items: center;
            gap: 20px;
            padding: 12px 32px;
            max-width: var(--container-max);
            margin: 0 auto;
            flex-wrap: nowrap;
            position: relative;
            z-index: 1001;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
            font-weight: 800;
            font-size: 18px;
            color: var(--primary-black);
            letter-spacing: -0.01em;
            white-space: nowrap;
        }
        .nav-logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: var(--primary-black);
            color: var(--accent-orange);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 800;
            flex-shrink: 0;
        }
        .nav-logo span {
            color: var(--primary-black);
        }
        .nav-logo .highlight {
            color: var(--accent-orange);
        }
        .nav-search {
            flex: 1;
            max-width: 520px;
            min-width: 180px;
            display: flex;
            align-items: center;
            background: var(--bg-ice);
            border: 1px solid var(--border-light);
            border-radius: 999px;
            padding: 10px 20px;
            gap: 10px;
            transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
            cursor: text;
        }
        .nav-search:focus-within {
            background: var(--bg-white);
            border-color: var(--accent-orange);
            box-shadow: 0 0 0 3px rgba(242, 160, 61, 0.25);
        }
        .nav-search svg {
            flex-shrink: 0;
            width: 18px;
            height: 18px;
            color: var(--text-secondary);
        }
        .nav-search input {
            flex: 1;
            border: none;
            background: transparent;
            font-size: 14px;
            color: var(--text-warm);
            min-width: 0;
        }
        .nav-search input::placeholder {
            color: var(--text-secondary);
            font-size: 14px;
        }
        .nav-search .search-filter-hint {
            flex-shrink: 0;
            font-size: 12px;
            color: var(--text-secondary);
            border-left: 1px solid var(--border-light);
            padding-left: 12px;
            white-space: nowrap;
            user-select: none;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-shrink: 0;
            font-size: 14px;
            font-weight: 500;
        }
        .nav-links a {
            color: var(--text-warm);
            position: relative;
            padding: 4px 0;
            white-space: nowrap;
            transition: color 0.2s ease;
        }
        .nav-links a::after {
            content: "";
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-orange);
            transition: width 0.25s ease;
        }
        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }
        .nav-links a.active {
            color: var(--accent-orange-hover);
            font-weight: 700;
        }
        .nav-links a:hover {
            color: var(--accent-orange-hover);
        }
        .nav-hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: 6px;
            transition: background 0.2s ease;
            flex-shrink: 0;
        }
        .nav-hamburger:hover {
            background: var(--bg-ice);
        }
        .nav-hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--primary-black);
            border-radius: 2px;
            transition: transform 0.3s ease, opacity 0.3s ease;
        }
        .nav-hamburger.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-hamburger.open span:nth-child(2) {
            opacity: 0;
        }
        .nav-hamburger.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }
        .mobile-search-bar {
            display: none;
            padding: 12px 32px 16px;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
        }
        .mobile-search-bar .nav-search {
            max-width: 100%;
            width: 100%;
        }

        /* ===== 面包屑 ===== */
        .breadcrumb-section {
            padding: 28px 0 0;
            background: var(--bg-ice);
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-secondary);
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--text-secondary);
            transition: color 0.2s ease;
        }
        .breadcrumb a:hover {
            color: var(--accent-orange-hover);
        }
        .breadcrumb .separator {
            color: var(--border-light);
            user-select: none;
        }
        .breadcrumb .current {
            color: var(--primary-black);
            font-weight: 600;
        }

        /* ===== Hero 区 ===== */
        .page-hero {
            padding: 48px 0 64px;
            background: var(--bg-ice);
            overflow: hidden;
        }
        .page-hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .page-hero-text {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .page-hero-text .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary-black);
            color: #fff;
            font-size: 13px;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: var(--radius-xs);
            letter-spacing: 0.02em;
            width: fit-content;
            margin-top: 0;
        }
        .page-hero-text h1 {
            font-size: 42px;
            font-weight: 800;
            line-height: 1.18;
            letter-spacing: -0.02em;
            color: var(--primary-black);
            margin: 0;
        }
        .page-hero-text h1 .highlight-underline {
            color: var(--primary-black);
            background: linear-gradient(to top, rgba(242, 160, 61, 0.35) 0%, rgba(242, 160, 61, 0.35) 28%, transparent 28%);
            padding: 0 2px;
        }
        .page-hero-text .hero-description {
            font-size: 17px;
            line-height: 1.9;
            color: var(--text-secondary);
            max-width: 560px;
            margin: 0;
        }
        .hero-actions {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-top: 8px;
        }
        .page-hero-visual {
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .page-hero-visual .hero-img-wrap {
            position: relative;
            width: 100%;
            max-width: 480px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-deep);
            aspect-ratio: 4 / 3;
            background: #EDEDEA;
        }
        .page-hero-visual .hero-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .page-hero-visual .hero-img-wrap:hover img {
            transform: scale(1.03);
        }
        .page-hero-visual .hero-float-card {
            position: absolute;
            bottom: -18px;
            right: -10px;
            background: var(--primary-black);
            color: #fff;
            padding: 16px 20px;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-hover);
            display: flex;
            flex-direction: column;
            gap: 4px;
            min-width: 140px;
            z-index: 2;
        }
        .page-hero-visual .hero-float-card .float-number {
            font-family: var(--font-en);
            font-size: 32px;
            font-weight: 800;
            color: var(--accent-orange);
            line-height: 1.1;
        }
        .page-hero-visual .hero-float-card .float-label {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.7);
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            line-height: 1.4;
            letter-spacing: 0.01em;
            transition: all var(--transition);
            cursor: pointer;
            user-select: none;
            text-align: center;
            white-space: nowrap;
        }
        .btn:focus-visible {
            outline: none;
            box-shadow: 0 0 0 3px rgba(242, 160, 61, 0.35);
        }
        .btn:active {
            transform: translateY(1px);
        }
        .btn-primary {
            background: var(--accent-orange);
            color: #000;
            border: 1.5px solid var(--accent-orange);
        }
        .btn-primary:hover {
            background: var(--accent-orange-hover);
            border-color: var(--accent-orange-hover);
            color: #000;
            box-shadow: 0 4px 16px rgba(242, 160, 61, 0.3);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary-black);
            border: 1.5px solid var(--primary-black);
        }
        .btn-outline:hover {
            background: var(--primary-black);
            color: #fff;
        }
        .btn-text {
            background: transparent;
            color: var(--primary-black);
            border: none;
            padding: 4px 0;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            position: relative;
        }
        .btn-text::after {
            content: "";
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--accent-orange);
            border-radius: 1px;
        }
        .btn-text .arrow-icon {
            font-size: 16px;
            transition: transform 0.25s ease;
            display: inline-block;
        }
        .btn-text:hover .arrow-icon {
            transform: translateX(4px);
        }
        .btn-text:hover {
            color: var(--accent-orange-hover);
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
            border-radius: 8px;
        }

        /* ===== 统计条 ===== */
        .stats-section {
            padding: 48px 0;
            background: var(--primary-black);
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
        }
        .stat-item {
            text-align: center;
            color: #fff;
            display: flex;
            flex-direction: column;
            gap: 6px;
        }
        .stat-item .stat-number {
            font-family: var(--font-en);
            font-size: 44px;
            font-weight: 800;
            line-height: 1.1;
            color: var(--accent-orange);
        }
        .stat-item .stat-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            font-weight: 400;
        }

        /* ===== 左侧列表 + 右侧详情 ===== */
        .data-layout-section {
            padding: var(--section-padding-desktop) 0;
            background: var(--bg-white);
        }
        .section-heading {
            margin-bottom: 40px;
        }
        .section-heading .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--accent-orange-hover);
            letter-spacing: 0.06em;
            margin-bottom: 8px;
        }
        .section-heading h2 {
            font-size: 30px;
            font-weight: 700;
            line-height: 1.25;
            color: var(--primary-black);
            margin: 0;
        }
        .section-heading .section-sub {
            font-size: 15px;
            color: var(--text-secondary);
            margin-top: 10px;
            max-width: 600px;
        }
        .data-layout-grid {
            display: grid;
            grid-template-columns: 360px 1fr;
            gap: 32px;
            align-items: start;
        }
        .data-list-panel {
            background: var(--bg-ice);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-light);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            max-height: 600px;
            overflow-y: auto;
        }
        .data-list-panel::-webkit-scrollbar {
            width: 4px;
        }
        .data-list-panel::-webkit-scrollbar-track {
            background: transparent;
        }
        .data-list-panel::-webkit-scrollbar-thumb {
            background: var(--border-light);
            border-radius: 2px;
        }
        .data-list-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 18px 20px;
            border-bottom: 1px solid var(--border-light);
            cursor: pointer;
            transition: background 0.2s ease, border-left 0.2s ease;
            border-left: 3px solid transparent;
            background: transparent;
            text-align: left;
            width: 100%;
            flex-shrink: 0;
        }
        .data-list-item:last-child {
            border-bottom: none;
        }
        .data-list-item:hover {
            background: #fff;
            border-left-color: var(--accent-orange);
        }
        .data-list-item.active {
            background: #fff;
            border-left-color: var(--accent-orange);
            box-shadow: inset 0 0 0 1px var(--border-light);
        }
        .data-list-item .list-thumb {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-xs);
            background: #EDEDEA;
            flex-shrink: 0;
            overflow: hidden;
        }
        .data-list-item .list-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .data-list-item .list-info {
            flex: 1;
            min-width: 0;
        }
        .data-list-item .list-info .list-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--primary-black);
            line-height: 1.4;
            margin-bottom: 4px;
        }
        .data-list-item .list-info .list-meta {
            font-size: 12px;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .data-list-item .list-info .list-meta .badge-mini {
            display: inline-block;
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 11px;
            font-weight: 500;
            background: #EDEDEA;
            color: var(--text-secondary);
        }
        .data-list-item .list-info .list-meta .badge-mini.hot {
            background: #fff3e0;
            color: var(--warning);
        }
        .data-detail-panel {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-light);
            padding: 32px;
            box-shadow: var(--shadow-card);
            min-height: 400px;
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .data-detail-panel .detail-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            border-bottom: 1px solid var(--border-light);
            padding-bottom: 16px;
        }
        .data-detail-panel .detail-header h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--primary-black);
            margin: 0;
            line-height: 1.3;
        }
        .data-detail-panel .detail-header .detail-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            color: var(--accent-orange-hover);
            padding: 4px 12px;
            border-radius: var(--radius-xs);
            background: #fff8f0;
            border: 1px solid rgba(242, 160, 61, 0.3);
        }
        .data-detail-panel .detail-body {
            font-size: 16px;
            line-height: 1.85;
            color: var(--text-warm);
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .data-detail-panel .detail-body p {
            margin: 0;
        }
        .data-detail-panel .detail-body .highlight-text {
            padding: 16px 20px;
            background: var(--bg-ice);
            border-left: 3px solid var(--accent-orange);
            border-radius: var(--radius-xs);
            font-size: 15px;
            color: var(--text-secondary);
            font-style: italic;
            margin: 8px 0;
        }
        .data-detail-panel .detail-metrics-row {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
            margin-top: 8px;
        }
        .data-detail-panel .detail-metric {
            background: var(--bg-ice);
            border-radius: var(--radius-md);
            padding: 16px;
            text-align: center;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .data-detail-panel .detail-metric .metric-value {
            font-family: var(--font-en);
            font-size: 28px;
            font-weight: 800;
            color: var(--primary-black);
            line-height: 1.1;
        }
        .data-detail-panel .detail-metric .metric-label {
            font-size: 13px;
            color: var(--text-secondary);
            font-weight: 400;
        }

        /* ===== 热门数据卡片 ===== */
        .hot-data-section {
            padding: var(--section-padding-desktop) 0;
            background: var(--bg-ice);
        }
        .hot-data-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .hot-data-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-light);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: box-shadow 0.25s ease, transform 0.25s ease;
            display: flex;
            flex-direction: column;
        }
        .hot-data-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .hot-data-card .card-img {
            aspect-ratio: 3 / 2;
            background: #EDEDEA;
            overflow: hidden;
            position: relative;
        }
        .hot-data-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.35s ease;
        }
        .hot-data-card:hover .card-img img {
            transform: scale(1.04);
        }
        .hot-data-card .card-img .card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--primary-black);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: var(--radius-xs);
            letter-spacing: 0.03em;
        }
        .hot-data-card .card-body {
            padding: 20px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            flex: 1;
        }
        .hot-data-card .card-body h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--primary-black);
            margin: 0;
            line-height: 1.35;
        }
        .hot-data-card .card-body p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0;
            flex: 1;
        }
        .hot-data-card .card-body .card-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 12px;
            color: var(--text-secondary);
            border-top: 1px solid var(--border-light);
            padding-top: 12px;
        }
        .hot-data-card .card-body .card-meta .meta-dot {
            width: 4px;
            height: 4px;
            border-radius: 50%;
            background: var(--accent-orange);
            flex-shrink: 0;
        }

        /* ===== 数据对比表 ===== */
        .comparison-section {
            padding: var(--section-padding-desktop) 0;
            background: var(--bg-white);
        }
        .comparison-table-wrap {
            overflow-x: auto;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            background: var(--bg-white);
        }
        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 720px;
        }
        .comparison-table thead th {
            background: var(--primary-black);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            text-align: left;
            padding: 16px 20px;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .comparison-table thead th:first-child {
            border-radius: var(--radius-lg) 0 0 0;
        }
        .comparison-table thead th:last-child {
            border-radius: 0 var(--radius-lg) 0 0;
        }
        .comparison-table tbody td {
            padding: 14px 20px;
            font-size: 14px;
            color: var(--text-warm);
            border-bottom: 1px solid var(--border-light);
            white-space: nowrap;
        }
        .comparison-table tbody tr:last-child td {
            border-bottom: none;
        }
        .comparison-table tbody tr:hover td {
            background: var(--bg-ice);
        }
        .comparison-table tbody td:first-child {
            font-weight: 600;
            color: var(--primary-black);
        }
        .comparison-table .value-highlight {
            color: var(--accent-orange-hover);
            font-weight: 700;
            font-family: var(--font-en);
        }

        /* ===== 深度阅读 ===== */
        .deep-reading-section {
            padding: var(--section-padding-desktop) 0;
            background: var(--bg-ice);
        }
        .deep-reading-grid {
            display: grid;
            grid-template-columns: 1fr 380px;
            gap: 40px;
            align-items: start;
        }
        .deep-reading-main {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .deep-reading-main h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary-black);
            line-height: 1.3;
            margin: 0;
        }
        .deep-reading-main .deep-body {
            font-size: 16px;
            line-height: 1.9;
            color: var(--text-warm);
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .deep-reading-main .deep-body p {
            margin: 0;
        }
        .deep-reading-main .deep-quote {
            padding: 20px 24px;
            background: var(--bg-white);
            border-left: 3px solid var(--accent-orange);
            border-radius: var(--radius-xs);
            font-size: 15px;
            color: var(--text-secondary);
            font-style: italic;
            box-shadow: var(--shadow-card);
        }
        .deep-reading-side {
            position: sticky;
            top: 100px;
        }
        .deep-reading-side .side-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-light);
            padding: 24px;
            box-shadow: var(--shadow-card);
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .deep-reading-side .side-card h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--primary-black);
            margin: 0;
        }
        .deep-reading-side .side-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0;
        }
        .deep-reading-side .side-card .side-img {
            aspect-ratio: 16 / 9;
            border-radius: var(--radius-md);
            overflow: hidden;
            background: #EDEDEA;
        }
        .deep-reading-side .side-card .side-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        /* ===== 时间线 ===== */
        .timeline-section {
            padding: var(--section-padding-desktop) 0;
            background: var(--bg-white);
        }
        .timeline-wrap {
            position: relative;
            max-width: 800px;
            margin: 0 auto;
        }
        .timeline-item {
            display: flex;
            gap: 24px;
            padding-bottom: 40px;
            position: relative;
        }
        .timeline-item:last-child {
            padding-bottom: 0;
        }
        .timeline-item::before {
            content: "";
            position: absolute;
            left: 40px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--border-light);
        }
        .timeline-item:last-child::before {
            display: none;
        }
        .timeline-dot {
            width: 80px;
            flex-shrink: 0;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 6px;
            position: relative;
            z-index: 1;
        }
        .timeline-dot .dot-circle {
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--accent-orange);
            border: 3px solid var(--bg-white);
            box-shadow: 0 0 0 3px rgba(242, 160, 61, 0.3);
            flex-shrink: 0;
            margin-top: 4px;
        }
        .timeline-dot .dot-date {
            font-size: 12px;
            color: var(--text-secondary);
            font-weight: 500;
            white-space: nowrap;
        }
        .timeline-content {
            flex: 1;
            background: var(--bg-ice);
            border-radius: var(--radius-md);
            padding: 20px;
            border: 1px solid var(--border-light);
            transition: box-shadow 0.25s ease;
        }
        .timeline-content:hover {
            box-shadow: var(--shadow-card);
        }
        .timeline-content h4 {
            font-size: 17px;
            font-weight: 700;
            color: var(--primary-black);
            margin: 0 0 8px;
            line-height: 1.35;
        }
        .timeline-content p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0;
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: var(--section-padding-desktop) 0;
            background: var(--bg-ice);
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: box-shadow 0.25s ease;
        }
        .faq-item.open {
            box-shadow: var(--shadow-card);
        }
        .faq-item .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 20px;
            cursor: pointer;
            background: transparent;
            width: 100%;
            text-align: left;
            transition: background 0.2s ease;
        }
        .faq-item .faq-question:hover {
            background: var(--bg-ice);
        }
        .faq-item .faq-question span {
            font-size: 15px;
            font-weight: 600;
            color: var(--primary-black);
            line-height: 1.4;
        }
        .faq-item .faq-icon {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--primary-black);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 700;
            flex-shrink: 0;
            transition: transform 0.25s ease, background 0.25s ease;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: var(--accent-orange);
            color: #000;
        }
        .faq-item .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 20px;
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 20px 20px;
        }
        .faq-item .faq-answer p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin: 0;
            padding-top: 4px;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: var(--section-padding-desktop) 0;
            background: var(--primary-black);
            color: #fff;
        }
        .cta-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: start;
        }
        .cta-info {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .cta-info h2 {
            font-size: 30px;
            font-weight: 700;
            color: #fff;
            margin: 0;
            line-height: 1.25;
        }
        .cta-info h2 .accent {
            color: var(--accent-orange);
        }
        .cta-info p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.8;
            margin: 0;
            max-width: 480px;
        }
        .cta-contact-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-top: 8px;
        }
        .cta-contact-list .contact-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
        }
        .cta-contact-list .contact-item .contact-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent-orange);
            flex-shrink: 0;
        }
        .cta-form-wrap {
            background: var(--secondary-dark);
            border-radius: var(--radius-lg);
            padding: 32px;
            box-shadow: var(--shadow-deep);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        .cta-form-wrap .form-title {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 20px;
        }
        .form-group {
            display: flex;
            flex-direction: column;
            gap: 6px;
            margin-bottom: 16px;
        }
        .form-group label {
            font-size: 14px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.85);
        }
        .form-group input,
        .form-group textarea {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 8px;
            padding: 12px 14px;
            font-size: 15px;
            color: #fff;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
            width: 100%;
        }
        .form-group input::placeholder,
        .form-group textarea::placeholder {
            color: rgba(255, 255, 255, 0.4);
        }
        .form-group input:focus,
        .form-group textarea:focus {
            border-color: var(--accent-orange);
            box-shadow: 0 0 0 3px rgba(242, 160, 61, 0.2);
        }
        .form-group textarea {
            min-height: 100px;
            resize: vertical;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--primary-black);
            color: rgba(255, 255, 255, 0.75);
            padding: 56px 0 28px;
            font-size: 14px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .footer-brand {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .footer-brand .nav-logo {
            color: #fff;
        }
        .footer-brand .nav-logo span {
            color: #fff;
        }
        .footer-brand .nav-logo .highlight {
            color: var(--accent-orange);
        }
        .footer-brand p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.7;
            margin: 0;
            max-width: 300px;
        }
        .footer-col h4 {
            font-size: 14px;
            font-weight: 700;
            color: #fff;
            margin: 0 0 16px;
            letter-spacing: 0.03em;
        }
        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
            margin: 0;
            padding: 0;
        }
        .footer-col ul li a {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            transition: color 0.2s ease;
        }
        .footer-col ul li a:hover {
            color: var(--accent-orange);
        }
        .footer-search {
            display: flex;
            gap: 8px;
            align-items: center;
            margin-bottom: 12px;
        }
        .footer-search input {
            flex: 1;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 999px;
            padding: 10px 16px;
            font-size: 13px;
            color: #fff;
            min-width: 0;
        }
        .footer-search input::placeholder {
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-search input:focus {
            border-color: var(--accent-orange);
            box-shadow: 0 0 0 3px rgba(242, 160, 61, 0.2);
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            padding-top: 20px;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.45);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.45);
            transition: color 0.2s ease;
            font-size: 12px;
        }
        .footer-bottom a:hover {
            color: var(--accent-orange);
        }
        .footer-bottom .footer-links {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .container {
                padding-left: 24px;
                padding-right: 24px;
            }
            .nav-inner {
                padding: 12px 24px;
            }
            .nav-links {
                gap: 12px;
                font-size: 13px;
            }
            .nav-search {
                max-width: 360px;
            }
            .page-hero-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .page-hero-visual .hero-img-wrap {
                max-width: 100%;
            }
            .page-hero-visual .hero-float-card {
                right: 12px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .data-layout-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .data-list-panel {
                max-height: 320px;
                flex-direction: column;
            }
            .hot-data-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .deep-reading-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .deep-reading-side {
                position: static;
            }
            .cta-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .data-detail-panel .detail-metrics-row {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        @media (max-width: 768px) {
            section {
                padding: var(--section-padding-mobile) 0;
            }
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .nav-inner {
                padding: 10px 16px;
                gap: 10px;
            }
            .nav-links {
                display: none;
            }
            .nav-hamburger {
                display: flex;
            }
            .nav-search {
                max-width: 180px;
                padding: 8px 14px;
            }
            .nav-search .search-filter-hint {
                display: none;
            }
            .mobile-search-bar {
                display: block;
            }
            .mobile-search-bar .nav-search {
                max-width: 100%;
            }
            .mobile-nav-links {
                display: none;
                flex-direction: column;
                gap: 4px;
                padding: 12px 16px;
                background: var(--bg-white);
                border-bottom: 1px solid var(--border-light);
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                z-index: 1000;
                box-shadow: var(--shadow-card);
            }
            .mobile-nav-links.open {
                display: flex;
            }
            .mobile-nav-links a {
                padding: 12px 16px;
                border-radius: 8px;
                font-size: 15px;
                font-weight: 500;
                color: var(--text-warm);
                transition: background 0.2s ease, color 0.2s ease;
            }
            .mobile-nav-links a:hover {
                background: var(--bg-ice);
                color: var(--accent-orange-hover);
            }
            .mobile-nav-links a.active {
                background: #fff8f0;
                color: var(--accent-orange-hover);
                font-weight: 700;
            }
            .page-hero {
                padding: 32px 0 48px;
            }
            .page-hero-text h1 {
                font-size: 30px;
            }
            .page-hero-text .hero-description {
                font-size: 15px;
            }
            .hero-actions {
                gap: 12px;
            }
            .hero-actions .btn {
                padding: 10px 20px;
                font-size: 14px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .stat-item .stat-number {
                font-size: 32px;
            }
            .hot-data-grid {
                grid-template-columns: 1fr;
            }
            .data-detail-panel {
                padding: 20px;
            }
            .data-detail-panel .detail-metrics-row {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .timeline-item {
                gap: 14px;
            }
            .timeline-dot {
                width: 60px;
            }
            .timeline-item::before {
                left: 30px;
            }
            .faq-item .faq-question {
                padding: 16px;
            }
            .faq-item .faq-answer {
                padding: 0 16px;
            }
            .faq-item.open .faq-answer {
                padding: 0 16px 16px;
            }
            .cta-form-wrap {
                padding: 24px 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .section-heading h2 {
                font-size: 24px;
            }
            .breadcrumb-section {
                padding: 16px 0 0;
            }
            .comparison-table-wrap {
                margin: 0 -16px;
                border-radius: 0;
                border-left: none;
                border-right: none;
            }
        }

        @media (max-width: 520px) {
            .page-hero-text h1 {
                font-size: 26px;
            }
            .page-hero-visual .hero-img-wrap {
                aspect-ratio: 16 / 10;
            }
            .page-hero-visual .hero-float-card {
                bottom: -12px;
                right: 8px;
                padding: 12px 16px;
            }
            .page-hero-visual .hero-float-card .float-number {
                font-size: 24px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-item .stat-number {
                font-size: 28px;
            }
            .stat-item .stat-label {
                font-size: 12px;
            }
            .section-heading h2 {
                font-size: 22px;
            }
            .data-detail-panel .detail-metrics-row {
                grid-template-columns: 1fr;
            }
            .hot-data-card .card-body h3 {
                font-size: 16px;
            }
            .timeline-dot {
                width: 50px;
            }
            .timeline-item::before {
                left: 25px;
            }
            .comparison-table thead th,
            .comparison-table tbody td {
                padding: 10px 14px;
                font-size: 12px;
            }
            .cta-info h2 {
                font-size: 24px;
            }
            .form-group input,
            .form-group textarea {
                font-size: 14px;
            }
        }

/* roulang page: category3 */
:root {
            --primary-black: #1A1A1A;
            --secondary-dark: #262626;
            --accent-orange: #F2A03D;
            --accent-orange-hover: #D98828;
            --bg-ice: #F7F7F5;
            --bg-white: #FFFFFF;
            --text-warm: #2A2A2A;
            --text-secondary: #5C5C5C;
            --border-light: #E8E8E4;
            --success: #3F7D5A;
            --warning: #C17B3C;
            --error: #B5493F;
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 10px;
            --radius-xs: 4px;
            --shadow-card: 0 2px 12px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 8px 28px rgba(0, 0, 0, 0.12);
            --shadow-deep: 0 4px 24px rgba(0, 0, 0, 0.18);
            --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-en: "Inter", "SF Pro Display", sans-serif;
            --section-padding-desktop: 80px;
            --section-padding-mobile: 48px;
            --container-max: 1200px;
            --transition: 0.25s ease;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-cn);
            font-size: 16px;
            font-weight: 400;
            line-height: 1.8;
            color: var(--text-warm);
            background-color: var(--bg-ice);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition), background-color var(--transition), border-color var(--transition), opacity var(--transition);
        }

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            font-size: inherit;
        }

        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            outline: none;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 32px;
            padding-right: 32px;
        }

        section {
            padding: var(--section-padding-desktop) 0;
            position: relative;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            transition: box-shadow 0.3s ease;
        }
        .site-header.scrolled {
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.08);
        }
        .nav-inner {
            display: flex;
            align-items: center;
            gap: 20px;
            padding: 12px 32px;
            max-width: var(--container-max);
            margin: 0 auto;
            flex-wrap: nowrap;
            position: relative;
            z-index: 1001;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
            font-weight: 800;
            font-size: 18px;
            color: var(--primary-black);
            letter-spacing: -0.01em;
            white-space: nowrap;
        }
        .nav-logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: var(--primary-black);
            color: var(--accent-orange);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 800;
            flex-shrink: 0;
        }
        .nav-logo span {
            color: var(--primary-black);
        }
        .nav-logo .highlight {
            color: var(--accent-orange);
        }
        .nav-search {
            flex: 1;
            max-width: 480px;
            min-width: 180px;
            display: flex;
            align-items: center;
            background: var(--bg-ice);
            border: 1px solid var(--border-light);
            border-radius: 999px;
            padding: 8px 18px;
            gap: 10px;
            transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
            cursor: text;
        }
        .nav-search:focus-within {
            background: var(--bg-white);
            border-color: var(--accent-orange);
            box-shadow: 0 0 0 3px rgba(242, 160, 61, 0.25);
        }
        .nav-search i {
            flex-shrink: 0;
            width: 18px;
            height: 18px;
            color: var(--text-secondary);
            font-size: 16px;
        }
        .nav-search input {
            flex: 1;
            border: none;
            background: transparent;
            font-size: 14px;
            color: var(--text-warm);
            min-width: 0;
            padding: 4px 0;
        }
        .nav-search input::placeholder {
            color: var(--text-secondary);
            font-size: 14px;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-shrink: 0;
            font-size: 14px;
            font-weight: 500;
        }
        .nav-links a {
            color: var(--text-warm);
            position: relative;
            padding: 4px 0;
            white-space: nowrap;
            transition: color 0.2s ease;
        }
        .nav-links a::after {
            content: "";
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-orange);
            transition: width 0.25s ease;
        }
        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }
        .nav-links a.active {
            color: var(--accent-orange);
        }
        .nav-toggle {
            display: none;
            flex-shrink: 0;
            color: var(--primary-black);
            font-size: 24px;
            padding: 6px;
            border-radius: 8px;
            transition: background 0.2s ease;
        }
        .nav-toggle:hover {
            background: var(--bg-ice);
        }

        /* 移动端导航抽屉 */
        .mobile-nav {
            display: none;
            position: fixed;
            top: 0;
            right: 0;
            bottom: 0;
            width: 280px;
            background: var(--bg-white);
            box-shadow: -4px 0 24px rgba(0, 0, 0, 0.12);
            z-index: 1100;
            padding: 24px;
            transform: translateX(100%);
            transition: transform 0.3s ease;
            overflow-y: auto;
        }
        .mobile-nav.open {
            transform: translateX(0);
        }
        .mobile-nav-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 24px;
        }
        .mobile-nav-close {
            font-size: 24px;
            color: var(--text-secondary);
            padding: 6px;
        }
        .mobile-nav-links {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .mobile-nav-links a {
            font-size: 16px;
            font-weight: 500;
            padding: 10px 0;
            border-bottom: 1px solid var(--border-light);
            color: var(--text-warm);
            transition: color 0.2s ease;
        }
        .mobile-nav-links a:hover,
        .mobile-nav-links a.active {
            color: var(--accent-orange);
        }
        .mobile-search {
            display: flex;
            align-items: center;
            background: var(--bg-ice);
            border: 1px solid var(--border-light);
            border-radius: 999px;
            padding: 8px 16px;
            gap: 8px;
            margin-bottom: 16px;
        }
        .mobile-search input {
            flex: 1;
            border: none;
            background: transparent;
            font-size: 14px;
            color: var(--text-warm);
            min-width: 0;
        }
        .mobile-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.35);
            z-index: 1050;
            opacity: 0;
            transition: opacity 0.3s ease;
        }
        .mobile-overlay.show {
            opacity: 1;
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: var(--radius-sm);
            padding: 12px 28px;
            font-weight: 600;
            font-size: 15px;
            line-height: 1.4;
            transition: all var(--transition);
            cursor: pointer;
            white-space: nowrap;
        }
        .btn:active {
            transform: translateY(1px);
        }
        .btn-primary {
            background: var(--accent-orange);
            color: var(--primary-black);
            border: 2px solid var(--accent-orange);
        }
        .btn-primary:hover {
            background: var(--accent-orange-hover);
            border-color: var(--accent-orange-hover);
            box-shadow: 0 4px 16px rgba(242, 160, 61, 0.35);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary-black);
            border: 1.5px solid var(--primary-black);
        }
        .btn-outline:hover {
            background: var(--primary-black);
            color: var(--bg-white);
        }
        .btn-text {
            background: transparent;
            color: var(--primary-black);
            padding: 6px 0;
            border-bottom: 2px solid var(--accent-orange);
            border-radius: 0;
            font-weight: 500;
        }
        .btn-text i {
            transition: transform 0.25s ease;
        }
        .btn-text:hover i {
            transform: translateX(4px);
        }
        .btn-text:hover {
            color: var(--accent-orange);
            border-bottom-color: var(--accent-orange-hover);
        }

        /* ===== 面包屑 ===== */
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 16px;
        }
        .breadcrumb a {
            color: var(--text-secondary);
            transition: color 0.2s ease;
        }
        .breadcrumb a:hover {
            color: var(--accent-orange);
        }
        .breadcrumb .separator {
            color: var(--border-light);
        }
        .breadcrumb .current {
            color: var(--primary-black);
            font-weight: 600;
        }

        /* ===== Hero ===== */
        .hero-section {
            padding: 64px 0 48px;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .hero-content .breadcrumb {
            margin-bottom: 20px;
        }
        .hero-content h1 {
            font-size: 44px;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.02em;
            color: var(--primary-black);
            margin-bottom: 20px;
        }
        .hero-content h1 .highlight {
            color: var(--accent-orange);
            position: relative;
            display: inline-block;
        }
        .hero-content h1 .highlight::after {
            content: "";
            position: absolute;
            bottom: 4px;
            left: 0;
            width: 100%;
            height: 3px;
            background: var(--accent-orange);
            border-radius: 2px;
        }
        .hero-desc {
            font-size: 17px;
            color: var(--text-secondary);
            line-height: 1.9;
            margin-bottom: 28px;
            max-width: 520px;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .hero-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-deep);
            background: var(--bg-ice);
        }
        .hero-image img {
            width: 100%;
            height: 360px;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .hero-image:hover img {
            transform: scale(1.03);
        }

        /* ===== 板块标题 ===== */
        .section-header {
            margin-bottom: 40px;
        }
        .section-header h2 {
            font-size: 30px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--primary-black);
            letter-spacing: -0.01em;
            margin-bottom: 8px;
        }
        .section-header h2 .highlight {
            color: var(--accent-orange);
        }
        .section-header p {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 680px;
        }

        /* ===== 知识领域卡片 ===== */
        .knowledge-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .knowledge-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
            transition: box-shadow var(--transition), transform var(--transition);
            display: flex;
            flex-direction: column;
        }
        .knowledge-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .knowledge-card .card-img {
            height: 180px;
            background: var(--bg-ice);
            overflow: hidden;
        }
        .knowledge-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .knowledge-card:hover .card-img img {
            transform: scale(1.05);
        }
        .knowledge-card .card-body {
            padding: 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .knowledge-card .card-badge {
            display: inline-block;
            background: var(--primary-black);
            color: var(--bg-white);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: var(--radius-xs);
            margin-bottom: 12px;
            align-self: flex-start;
        }
        .knowledge-card h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--primary-black);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .knowledge-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 16px;
            flex: 1;
        }
        .knowledge-card .card-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary-black);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: color 0.2s ease;
        }
        .knowledge-card .card-link i {
            transition: transform 0.25s ease;
        }
        .knowledge-card .card-link:hover {
            color: var(--accent-orange);
        }
        .knowledge-card .card-link:hover i {
            transform: translateX(4px);
        }

        /* ===== 深度阅读区 ===== */
        .deep-reading {
            background: var(--bg-white);
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
        }
        .deep-reading .container {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .deep-reading .reading-text h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary-black);
            margin-bottom: 20px;
            line-height: 1.35;
        }
        .deep-reading .reading-text p {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.9;
            margin-bottom: 16px;
        }
        .deep-reading .reading-text .highlight-text {
            border-left: 3px solid var(--accent-orange);
            padding-left: 20px;
            font-size: 17px;
            color: var(--text-warm);
            font-weight: 500;
            margin: 20px 0;
            line-height: 1.8;
        }
        .deep-reading .reading-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-deep);
        }
        .deep-reading .reading-image img {
            width: 100%;
            height: 320px;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .deep-reading .reading-image:hover img {
            transform: scale(1.03);
        }

        /* ===== 时间线 ===== */
        .timeline-section {
            background: var(--bg-ice);
        }
        .timeline {
            position: relative;
            padding-left: 40px;
            border-left: 2px solid var(--border-light);
        }
        .timeline-item {
            position: relative;
            margin-bottom: 32px;
            padding-left: 24px;
        }
        .timeline-item::before {
            content: "";
            position: absolute;
            left: -46px;
            top: 6px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--accent-orange);
            border: 3px solid var(--bg-white);
            box-shadow: 0 0 0 2px var(--accent-orange);
        }
        .timeline-item .timeline-date {
            display: inline-block;
            background: var(--primary-black);
            color: var(--accent-orange);
            font-size: 13px;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: var(--radius-xs);
            margin-bottom: 8px;
            font-family: var(--font-en);
        }
        .timeline-item h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary-black);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .timeline-item p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 700px;
        }

        /* ===== 数据看板 ===== */
        .stats-section {
            background: var(--primary-black);
            padding: 64px 0;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
        }
        .stat-item {
            text-align: center;
            padding: 24px 16px;
            border-radius: var(--radius-md);
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            transition: background 0.3s ease, transform 0.3s ease;
        }
        .stat-item:hover {
            background: rgba(255, 255, 255, 0.08);
            transform: translateY(-4px);
        }
        .stat-number {
            font-family: var(--font-en);
            font-size: 42px;
            font-weight: 800;
            color: var(--accent-orange);
            line-height: 1.1;
            margin-bottom: 8px;
        }
        .stat-label {
            font-size: 14px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.8);
            letter-spacing: 0.02em;
        }

        /* ===== 热门知识列表 ===== */
        .hot-list-section {
            background: var(--bg-white);
        }
        .hot-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
        .hot-item {
            display: flex;
            gap: 16px;
            padding: 16px;
            background: var(--bg-ice);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .hot-item:hover {
            box-shadow: var(--shadow-card);
            transform: translateY(-2px);
        }
        .hot-item .hot-img {
            width: 100px;
            height: 80px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            flex-shrink: 0;
        }
        .hot-item .hot-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .hot-item .hot-content {
            flex: 1;
        }
        .hot-item .hot-content h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--primary-black);
            margin-bottom: 4px;
            line-height: 1.4;
        }
        .hot-item .hot-content p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        .hot-item .hot-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 12px;
            color: var(--text-secondary);
            margin-top: 6px;
        }
        .hot-item .hot-meta i {
            font-size: 13px;
            color: var(--accent-orange);
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-ice);
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            margin-bottom: 12px;
            overflow: hidden;
            transition: box-shadow var(--transition);
        }
        .faq-item.active {
            box-shadow: var(--shadow-card);
        }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 18px 20px;
            cursor: pointer;
            font-weight: 600;
            font-size: 16px;
            color: var(--primary-black);
            transition: background 0.25s ease;
            background: var(--bg-white);
            border: none;
            width: 100%;
            text-align: left;
        }
        .faq-question:hover {
            background: var(--bg-ice);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--bg-ice);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--text-secondary);
            transition: transform 0.3s ease, background 0.3s ease, color 0.3s ease;
        }
        .faq-item.active .faq-icon {
            transform: rotate(45deg);
            background: var(--accent-orange);
            color: var(--primary-black);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            background: var(--bg-ice);
            border-top: 1px solid transparent;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            border-top-color: var(--border-light);
        }
        .faq-answer p {
            padding: 16px 20px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        /* ===== CTA 区 ===== */
        .cta-section {
            background: var(--primary-black);
            padding: 72px 0;
        }
        .cta-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: start;
        }
        .cta-info h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--bg-white);
            line-height: 1.35;
            margin-bottom: 16px;
        }
        .cta-info h2 .highlight {
            color: var(--accent-orange);
        }
        .cta-info p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.75);
            line-height: 1.8;
            margin-bottom: 20px;
        }
        .cta-contact-list {
            list-style: none;
            margin-top: 16px;
        }
        .cta-contact-list li {
            display: flex;
            align-items: center;
            gap: 10px;
            color: rgba(255, 255, 255, 0.8);
            font-size: 15px;
            margin-bottom: 10px;
        }
        .cta-contact-list li i {
            color: var(--accent-orange);
            width: 20px;
            text-align: center;
        }
        .cta-form {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 32px;
            box-shadow: var(--shadow-deep);
        }
        .cta-form h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary-black);
            margin-bottom: 20px;
        }
        .form-group {
            margin-bottom: 16px;
        }
        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-warm);
            margin-bottom: 6px;
        }
        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: 12px 14px;
            border: 1px solid var(--border-light);
            border-radius: 8px;
            font-size: 15px;
            color: var(--text-warm);
            background: var(--bg-white);
            transition: border-color 0.25s ease, box-shadow 0.25s ease;
        }
        .form-group input:focus,
        .form-group textarea:focus {
            border-color: var(--accent-orange);
            box-shadow: 0 0 0 3px rgba(242, 160, 61, 0.25);
        }
        .form-group textarea {
            min-height: 100px;
            resize: vertical;
        }
        .form-submit {
            width: 100%;
            background: var(--accent-orange);
            color: var(--primary-black);
            font-weight: 700;
            padding: 14px;
            border-radius: 8px;
            border: 2px solid var(--accent-orange);
            font-size: 16px;
            cursor: pointer;
            transition: all var(--transition);
        }
        .form-submit:hover {
            background: var(--accent-orange-hover);
            border-color: var(--accent-orange-hover);
            box-shadow: 0 6px 20px rgba(242, 160, 61, 0.4);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--primary-black);
            color: rgba(255, 255, 255, 0.8);
            padding: 64px 0 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 32px;
            margin-bottom: 40px;
        }
        .footer-brand .nav-logo {
            margin-bottom: 12px;
            color: var(--bg-white);
        }
        .footer-brand .nav-logo span {
            color: var(--bg-white);
        }
        .footer-brand .nav-logo .highlight {
            color: var(--accent-orange);
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.65);
            max-width: 360px;
            margin-top: 8px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--bg-white);
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }
        .footer-col ul {
            list-style: none;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            transition: color 0.2s ease;
        }
        .footer-col ul li a:hover {
            color: var(--accent-orange);
        }
        .footer-search {
            display: flex;
            gap: 8px;
            margin-bottom: 12px;
        }
        .footer-search input {
            flex: 1;
            padding: 10px 14px;
            border-radius: 8px;
            border: 1px solid rgba(255, 255, 255, 0.25);
            background: rgba(255, 255, 255, 0.08);
            color: var(--bg-white);
            font-size: 13px;
        }
        .footer-search input::placeholder {
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-search input:focus {
            border-color: var(--accent-orange);
            box-shadow: 0 0 0 3px rgba(242, 160, 61, 0.25);
        }
        .footer-search .btn {
            padding: 10px 16px;
            font-size: 13px;
            white-space: nowrap;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.55);
            transition: color 0.2s ease;
        }
        .footer-bottom a:hover {
            color: var(--accent-orange);
        }
        .footer-bottom .footer-links {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .nav-inner {
                gap: 14px;
                padding: 10px 20px;
            }
            .nav-links {
                gap: 10px;
                font-size: 13px;
            }
            .nav-search {
                max-width: 300px;
                min-width: 120px;
            }
            .hero-grid {
                gap: 32px;
            }
            .hero-content h1 {
                font-size: 36px;
            }
            .knowledge-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .cta-grid {
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            .container {
                padding-left: 20px;
                padding-right: 20px;
            }
            section {
                padding: var(--section-padding-mobile) 0;
            }
            .nav-inner {
                padding: 8px 16px;
                gap: 10px;
            }
            .nav-links {
                display: none;
            }
            .nav-toggle {
                display: inline-flex;
                align-items: center;
                justify-content: center;
            }
            .mobile-nav {
                display: block;
            }
            .mobile-overlay {
                display: block;
                pointer-events: none;
            }
            .mobile-overlay.show {
                pointer-events: auto;
            }
            .nav-search {
                flex: 1;
                max-width: none;
                min-width: 0;
                padding: 6px 14px;
            }
            .nav-search .search-filter-hint {
                display: none;
            }
            .hero-section {
                padding: 40px 0 32px;
            }
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .hero-content h1 {
                font-size: 30px;
            }
            .hero-desc {
                font-size: 15px;
            }
            .hero-image img {
                height: 240px;
            }
            .knowledge-grid {
                grid-template-columns: 1fr;
            }
            .deep-reading .container {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .deep-reading .reading-image img {
                height: 220px;
            }
            .timeline {
                padding-left: 24px;
            }
            .timeline-item::before {
                left: -30px;
                width: 10px;
                height: 10px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-number {
                font-size: 32px;
            }
            .hot-list {
                grid-template-columns: 1fr;
            }
            .cta-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .cta-form {
                padding: 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media (max-width: 520px) {
            .nav-logo {
                font-size: 16px;
            }
            .nav-logo-icon {
                width: 28px;
                height: 28px;
                font-size: 14px;
            }
            .nav-search input {
                font-size: 13px;
            }
            .hero-content h1 {
                font-size: 26px;
            }
            .hero-actions {
                flex-direction: column;
                gap: 12px;
            }
            .btn {
                width: 100%;
                justify-content: center;
            }
            .knowledge-grid {
                gap: 16px;
            }
            .hot-item {
                flex-direction: column;
            }
            .hot-item .hot-img {
                width: 100%;
                height: 140px;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .timeline {
                padding-left: 16px;
            }
            .timeline-item::before {
                left: -22px;
            }
        }

/* roulang page: category4 */
:root {
            --primary-black: #1A1A1A;
            --secondary-dark: #262626;
            --accent-orange: #F2A03D;
            --accent-orange-hover: #D98828;
            --bg-ice: #F7F7F5;
            --bg-white: #FFFFFF;
            --text-warm: #2A2A2A;
            --text-secondary: #5C5C5C;
            --border-light: #E8E8E4;
            --success: #3F7D5A;
            --warning: #C17B3C;
            --error: #B5493F;
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 10px;
            --radius-xs: 4px;
            --shadow-card: 0 2px 12px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 8px 28px rgba(0, 0, 0, 0.12);
            --shadow-deep: 0 4px 24px rgba(0, 0, 0, 0.18);
            --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-en: "Inter", "SF Pro Display", sans-serif;
            --section-padding-desktop: 96px;
            --section-padding-mobile: 56px;
            --container-max: 1200px;
            --transition: 0.25s ease;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-cn);
            font-size: 16px;
            font-weight: 400;
            line-height: 1.8;
            color: var(--text-warm);
            background-color: var(--bg-ice);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition), background-color var(--transition), border-color var(--transition), opacity var(--transition);
        }

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            font-size: inherit;
        }

        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            outline: none;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 32px;
            padding-right: 32px;
        }

        section {
            padding: var(--section-padding-desktop) 0;
            position: relative;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            transition: box-shadow 0.3s ease;
        }

        .site-header.scrolled {
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.08);
        }

        .nav-inner {
            display: flex;
            align-items: center;
            gap: 20px;
            padding: 12px 32px;
            max-width: var(--container-max);
            margin: 0 auto;
            flex-wrap: nowrap;
            position: relative;
            z-index: 1001;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
            font-weight: 800;
            font-size: 18px;
            color: var(--primary-black);
            letter-spacing: -0.01em;
            white-space: nowrap;
        }

        .nav-logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: var(--primary-black);
            color: var(--accent-orange);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 800;
            flex-shrink: 0;
        }

        .nav-logo span {
            color: var(--primary-black);
        }

        .nav-logo .highlight {
            color: var(--accent-orange);
        }

        .nav-search {
            flex: 1;
            max-width: 560px;
            min-width: 200px;
            display: flex;
            align-items: center;
            background: var(--bg-ice);
            border: 1px solid var(--border-light);
            border-radius: 999px;
            padding: 10px 20px;
            gap: 10px;
            transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
            cursor: text;
        }

        .nav-search:focus-within {
            background: var(--bg-white);
            border-color: var(--accent-orange);
            box-shadow: 0 0 0 3px rgba(242, 160, 61, 0.25);
        }

        .nav-search svg {
            flex-shrink: 0;
            width: 18px;
            height: 18px;
            color: var(--text-secondary);
        }

        .nav-search input {
            flex: 1;
            border: none;
            background: transparent;
            font-size: 14px;
            color: var(--text-warm);
            min-width: 0;
        }

        .nav-search input::placeholder {
            color: var(--text-secondary);
            font-size: 14px;
        }

        .nav-search .search-filter-hint {
            flex-shrink: 0;
            font-size: 12px;
            color: var(--text-secondary);
            border-left: 1px solid var(--border-light);
            padding-left: 12px;
            white-space: nowrap;
            user-select: none;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 18px;
            flex-shrink: 0;
            font-size: 14px;
            font-weight: 500;
        }

        .nav-links a {
            color: var(--text-warm);
            position: relative;
            padding: 4px 0;
            white-space: nowrap;
            transition: color 0.2s ease;
        }

        .nav-links a::after {
            content: "";
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-orange);
            transition: width 0.25s ease;
        }

        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }

        .nav-links a:hover {
            color: var(--accent-orange-hover);
        }

        .nav-links a.active {
            color: var(--accent-orange-hover);
            font-weight: 600;
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: 6px;
            background: transparent;
            flex-shrink: 0;
        }

        .nav-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--primary-black);
            border-radius: 2px;
            transition: all 0.3s ease;
        }

        .nav-toggle.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }

        .nav-toggle.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* ===== 面包屑 ===== */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--text-secondary);
            transition: color 0.2s ease;
        }

        .breadcrumb a:hover {
            color: var(--accent-orange-hover);
        }

        .breadcrumb .separator {
            color: var(--border-light);
            user-select: none;
        }

        .breadcrumb .current {
            color: var(--text-warm);
            font-weight: 600;
        }

        /* ===== 分类页 Hero ===== */
        .category-hero {
            background: var(--primary-black);
            color: #fff;
            padding: 80px 0 100px;
            position: relative;
            overflow: hidden;
        }

        .category-hero::before {
            content: "";
            position: absolute;
            top: 0;
            right: -120px;
            width: 420px;
            height: 420px;
            border-radius: 50%;
            background: rgba(242, 160, 61, 0.12);
            pointer-events: none;
        }

        .category-hero::after {
            content: "";
            position: absolute;
            bottom: -80px;
            left: -60px;
            width: 280px;
            height: 280px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            pointer-events: none;
        }

        .category-hero .container {
            position: relative;
            z-index: 2;
        }

        .category-hero .breadcrumb {
            color: rgba(255, 255, 255, 0.6);
        }

        .category-hero .breadcrumb a {
            color: rgba(255, 255, 255, 0.6);
        }

        .category-hero .breadcrumb a:hover {
            color: var(--accent-orange);
        }

        .category-hero .breadcrumb .current {
            color: #fff;
        }

        .category-hero .breadcrumb .separator {
            color: rgba(255, 255, 255, 0.3);
        }

        .category-hero h1 {
            font-size: 46px;
            font-weight: 800;
            line-height: 1.15;
            letter-spacing: -0.02em;
            margin-bottom: 20px;
            max-width: 800px;
        }

        .category-hero h1 .highlight-word {
            color: var(--accent-orange);
            position: relative;
        }

        .category-hero .hero-desc {
            font-size: 17px;
            line-height: 1.85;
            color: rgba(255, 255, 255, 0.78);
            max-width: 720px;
            margin-bottom: 32px;
        }

        .hero-meta-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .hero-meta-tags .tag-badge {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.18);
            color: rgba(255, 255, 255, 0.85);
            padding: 6px 16px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
            transition: all 0.25s ease;
        }

        .hero-meta-tags .tag-badge:hover {
            background: rgba(242, 160, 61, 0.2);
            border-color: var(--accent-orange);
            color: #fff;
        }

        /* ===== 统计条 ===== */
        .stats-section {
            background: var(--bg-white);
            padding: 48px 0;
            margin-top: -60px;
            position: relative;
            z-index: 3;
            border-radius: var(--radius-lg);
            max-width: var(--container-max);
            margin-left: auto;
            margin-right: auto;
            box-shadow: var(--shadow-card);
            width: calc(100% - 64px);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .stat-item {
            text-align: center;
            padding: 20px 16px;
            border-radius: var(--radius-md);
            transition: background 0.25s ease;
        }

        .stat-item:hover {
            background: var(--bg-ice);
        }

        .stat-item .stat-number {
            font-family: var(--font-en);
            font-size: 44px;
            font-weight: 800;
            line-height: 1.2;
            color: var(--primary-black);
            letter-spacing: -0.01em;
        }

        .stat-item .stat-number .unit {
            font-size: 20px;
            font-weight: 600;
            color: var(--accent-orange);
            margin-left: 2px;
        }

        .stat-item .stat-label {
            font-size: 14px;
            color: var(--text-secondary);
            margin-top: 8px;
            font-weight: 500;
        }

        /* ===== 表格区 ===== */
        .table-section {
            background: var(--bg-ice);
        }

        .section-header {
            margin-bottom: 40px;
        }

        .section-header h2 {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.25;
            color: var(--primary-black);
            margin-bottom: 12px;
        }

        .section-header p {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 680px;
            line-height: 1.8;
        }

        .health-table-wrapper {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            border: 1px solid var(--border-light);
        }

        .health-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 15px;
        }

        .health-table thead {
            background: var(--primary-black);
            color: #fff;
        }

        .health-table thead th {
            padding: 16px 20px;
            text-align: left;
            font-weight: 600;
            font-size: 14px;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .health-table tbody tr {
            border-bottom: 1px solid var(--border-light);
            transition: background 0.2s ease;
        }

        .health-table tbody tr:last-child {
            border-bottom: none;
        }

        .health-table tbody tr:hover {
            background: var(--bg-ice);
        }

        .health-table tbody td {
            padding: 16px 20px;
            color: var(--text-warm);
            vertical-align: top;
            line-height: 1.7;
        }

        .health-table tbody td:first-child {
            font-weight: 600;
            color: var(--primary-black);
            white-space: nowrap;
        }

        .health-table .risk-high {
            display: inline-block;
            background: rgba(181, 73, 63, 0.1);
            color: var(--error);
            padding: 2px 10px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
        }

        .health-table .risk-medium {
            display: inline-block;
            background: rgba(193, 123, 60, 0.1);
            color: var(--warning);
            padding: 2px 10px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
        }

        .health-table .risk-low {
            display: inline-block;
            background: rgba(63, 125, 90, 0.1);
            color: var(--success);
            padding: 2px 10px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
        }

        /* ===== 深度阅读区 ===== */
        .deep-reading {
            background: var(--bg-white);
        }

        .deep-reading-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: start;
        }

        .deep-reading-content h3 {
            font-size: 24px;
            font-weight: 700;
            color: var(--primary-black);
            margin-bottom: 16px;
            line-height: 1.35;
        }

        .deep-reading-content h4 {
            font-size: 18px;
            font-weight: 700;
            color: var(--primary-black);
            margin-top: 24px;
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .deep-reading-content p {
            font-size: 16px;
            line-height: 1.85;
            color: var(--text-warm);
            margin-bottom: 16px;
        }

        .deep-reading-content blockquote {
            border-left: 3px solid var(--accent-orange);
            padding: 12px 20px;
            margin: 20px 0;
            background: var(--bg-ice);
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.8;
            font-style: italic;
        }

        .deep-reading-image {
            position: sticky;
            top: 100px;
        }

        .deep-reading-image img {
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            width: 100%;
            object-fit: cover;
        }

        .deep-reading-image .image-caption {
            font-size: 13px;
            color: var(--text-secondary);
            margin-top: 12px;
            text-align: center;
        }

        /* ===== 健康知识卡片 ===== */
        .health-cards-section {
            background: var(--bg-ice);
        }

        .health-cards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .health-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
            transition: transform 0.25s ease, box-shadow 0.25s ease;
        }

        .health-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        .health-card .card-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-md);
            background: var(--primary-black);
            color: var(--accent-orange);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            font-weight: 800;
            margin-bottom: 16px;
        }

        .health-card h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--primary-black);
            margin-bottom: 10px;
        }

        .health-card p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 16px;
        }

        .health-card .card-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary-black);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: color 0.2s ease, gap 0.2s ease;
        }

        .health-card .card-link:hover {
            color: var(--accent-orange-hover);
            gap: 10px;
        }

        /* ===== 差异化模块：健康档案清单 ===== */
        .health-checklist-section {
            background: var(--secondary-dark);
            color: #fff;
        }

        .health-checklist-section .section-header h2 {
            color: #fff;
        }

        .health-checklist-section .section-header p {
            color: rgba(255, 255, 255, 0.7);
        }

        .checklist-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }

        .checklist-item {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-md);
            padding: 18px 20px;
            transition: background 0.25s ease, border-color 0.25s ease;
        }

        .checklist-item:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(242, 160, 61, 0.4);
        }

        .checklist-item .check-num {
            flex-shrink: 0;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--accent-orange);
            color: var(--primary-black);
            font-weight: 800;
            font-size: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .checklist-item h4 {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 4px;
        }

        .checklist-item p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            line-height: 1.7;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-white);
        }

        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            border-bottom: 1px solid var(--border-light);
            transition: all 0.3s ease;
        }

        .faq-item:last-child {
            border-bottom: none;
        }

        .faq-item.open {
            background: var(--bg-ice);
            border-radius: var(--radius-md);
            padding-left: 16px;
            padding-right: 16px;
            border-bottom: none;
            margin-bottom: 8px;
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 0;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--primary-black);
            text-align: left;
            width: 100%;
            transition: color 0.2s ease;
        }

        .faq-question:hover {
            color: var(--accent-orange-hover);
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--bg-ice);
            border: 1px solid var(--border-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-secondary);
            transition: all 0.3s ease;
        }

        .faq-item.open .faq-question .faq-icon {
            background: var(--accent-orange);
            border-color: var(--accent-orange);
            color: var(--primary-black);
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
        }

        .faq-answer p {
            padding: 0 0 18px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--primary-black);
            color: #fff;
            padding: 80px 0;
        }

        .cta-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: start;
        }

        .cta-info h2 {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.25;
            margin-bottom: 16px;
            color: #fff;
        }

        .cta-info p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.8;
            margin-bottom: 24px;
        }

        .cta-contact-list {
            list-style: none;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .cta-contact-list li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 15px;
            color: rgba(255, 255, 255, 0.75);
        }

        .cta-contact-list .contact-icon {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: rgba(242, 160, 61, 0.15);
            color: var(--accent-orange);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .cta-form {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-lg);
            padding: 32px;
        }

        .cta-form h3 {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 20px;
        }

        .form-group {
            margin-bottom: 16px;
        }

        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 6px;
        }

        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: 12px 14px;
            border-radius: 8px;
            border: 1px solid rgba(255, 255, 255, 0.2);
            background: rgba(255, 255, 255, 0.06);
            color: #fff;
            font-size: 15px;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
        }

        .form-group input::placeholder,
        .form-group textarea::placeholder {
            color: rgba(255, 255, 255, 0.4);
        }

        .form-group input:focus,
        .form-group textarea:focus {
            border-color: var(--accent-orange);
            box-shadow: 0 0 0 3px rgba(242, 160, 61, 0.2);
        }

        .form-group textarea {
            resize: vertical;
            min-height: 100px;
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            transition: all 0.25s ease;
            cursor: pointer;
            border: none;
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--accent-orange);
            color: var(--primary-black);
        }

        .btn-primary:hover {
            background: var(--accent-orange-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(242, 160, 61, 0.35);
        }

        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: none;
        }

        .btn-outline {
            background: transparent;
            color: var(--primary-black);
            border: 1.5px solid var(--primary-black);
        }

        .btn-outline:hover {
            background: var(--primary-black);
            color: #fff;
        }

        .btn-outline-light {
            background: transparent;
            color: #fff;
            border: 1.5px solid rgba(255, 255, 255, 0.5);
        }

        .btn-outline-light:hover {
            background: #fff;
            color: var(--primary-black);
            border-color: #fff;
        }

        .btn-full {
            width: 100%;
        }

        .btn:focus-visible {
            outline: 3px solid var(--accent-orange);
            outline-offset: 2px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--primary-black);
            color: rgba(255, 255, 255, 0.7);
            padding: 64px 0 24px;
            font-size: 14px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand .nav-logo {
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-brand .nav-logo-icon {
            background: rgba(255, 255, 255, 0.1);
            color: var(--accent-orange);
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.6);
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            transition: color 0.2s ease;
        }

        .footer-col ul li a:hover {
            color: var(--accent-orange);
        }

        .footer-search {
            display: flex;
            gap: 8px;
        }

        .footer-search input {
            flex: 1;
            padding: 10px 14px;
            border-radius: 8px;
            border: 1px solid rgba(255, 255, 255, 0.2);
            background: rgba(255, 255, 255, 0.06);
            color: #fff;
            font-size: 13px;
            min-width: 0;
        }

        .footer-search input::placeholder {
            color: rgba(255, 255, 255, 0.4);
        }

        .footer-search input:focus {
            border-color: var(--accent-orange);
            box-shadow: 0 0 0 3px rgba(242, 160, 61, 0.2);
        }

        .footer-search .btn {
            padding: 10px 18px;
            font-size: 13px;
            flex-shrink: 0;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: space-between;
            align-items: center;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.45);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.45);
            font-size: 12px;
            transition: color 0.2s ease;
        }

        .footer-bottom a:hover {
            color: var(--accent-orange);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .nav-inner {
                padding: 10px 20px;
                gap: 14px;
            }

            .nav-search {
                max-width: 380px;
            }

            .nav-links {
                gap: 12px;
                font-size: 13px;
            }

            .nav-links a {
                white-space: nowrap;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

            .deep-reading-grid {
                gap: 32px;
            }

            .health-cards-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }

            .checklist-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .cta-grid {
                gap: 32px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            section {
                padding: var(--section-padding-mobile) 0;
            }

            .container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .nav-inner {
                padding: 10px 16px;
                gap: 12px;
                flex-wrap: wrap;
            }

            .nav-logo {
                font-size: 16px;
            }

            .nav-logo-icon {
                width: 28px;
                height: 28px;
                font-size: 14px;
                border-radius: 6px;
            }

            .nav-search {
                order: 3;
                flex-basis: 100%;
                max-width: 100%;
                min-width: 0;
            }

            .nav-links {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: var(--bg-white);
                flex-direction: column;
                align-items: flex-start;
                gap: 0;
                padding: 16px;
                border-bottom: 1px solid var(--border-light);
                box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
                z-index: 999;
            }

            .nav-links.open {
                display: flex;
            }

            .nav-links a {
                padding: 12px 0;
                font-size: 15px;
                width: 100%;
                border-bottom: 1px solid var(--border-light);
            }

            .nav-links a:last-child {
                border-bottom: none;
            }

            .nav-links a::after {
                display: none;
            }

            .nav-toggle {
                display: flex;
                margin-left: auto;
            }

            .category-hero {
                padding: 56px 0 72px;
            }

            .category-hero h1 {
                font-size: 30px;
            }

            .category-hero .hero-desc {
                font-size: 15px;
            }

            .stats-section {
                width: calc(100% - 32px);
                padding: 32px 16px;
                margin-top: -40px;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }

            .stat-item .stat-number {
                font-size: 32px;
            }

            .stat-item .stat-number .unit {
                font-size: 16px;
            }

            .health-table-wrapper {
                overflow-x: auto;
                -webkit-overflow-scrolling: touch;
            }

            .health-table {
                font-size: 13px;
                min-width: 720px;
            }

            .health-table thead th,
            .health-table tbody td {
                padding: 12px 14px;
            }

            .deep-reading-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .deep-reading-image {
                position: static;
            }

            .health-cards-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .cta-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .cta-form {
                padding: 24px 20px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
        }

        @media (max-width: 520px) {
            .category-hero h1 {
                font-size: 26px;
            }

            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }

            .stat-item {
                padding: 14px 10px;
            }

            .stat-item .stat-number {
                font-size: 28px;
            }

            .health-table-wrapper {
                border-radius: var(--radius-md);
            }

            .section-header h2 {
                font-size: 24px;
            }

            .health-card {
                padding: 20px;
            }

            .checklist-item {
                padding: 14px 16px;
            }

            .btn {
                padding: 10px 20px;
                font-size: 14px;
            }
        }

/* roulang page: category5 */
:root {
  --primary-black: #1A1A1A;
  --secondary-dark: #262626;
  --accent-orange: #F2A03D;
  --accent-orange-hover: #D98828;
  --bg-ice: #F7F7F5;
  --bg-white: #FFFFFF;
  --text-warm: #2A2A2A;
  --text-secondary: #5C5C5C;
  --border-light: #E8E8E4;
  --success: #3F7D5A;
  --warning: #C17B3C;
  --error: #B5493F;
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 10px;
  --radius-xs: 4px;
  --shadow-card: 0 2px 12px rgba(0, 0, 0, 0.06);
  --shadow-hover: 0 8px 28px rgba(0, 0, 0, 0.12);
  --shadow-deep: 0 4px 24px rgba(0, 0, 0, 0.18);
  --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-en: "Inter", "SF Pro Display", sans-serif;
  --section-padding-desktop: 88px;
  --section-padding-mobile: 52px;
  --container-max: 1200px;
  --transition: 0.25s ease;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-cn);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.8;
  color: var(--text-warm);
  background-color: var(--bg-ice);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  margin: 0;
  padding: 0;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition), background-color var(--transition), border-color var(--transition), opacity var(--transition);
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  font-size: inherit;
}

input,
textarea,
select {
  font-family: inherit;
  font-size: inherit;
  outline: none;
}

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: 32px;
  padding-right: 32px;
}

section {
  padding: var(--section-padding-desktop) 0;
  position: relative;
}

/* ===== 导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--bg-white);
  border-bottom: 1px solid var(--border-light);
  transition: box-shadow 0.3s ease;
}

.site-header.scrolled {
  box-shadow: 0 2px 16px rgba(0, 0, 0, 0.08);
}

.nav-inner {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 32px;
  max-width: var(--container-max);
  margin: 0 auto;
  flex-wrap: nowrap;
  position: relative;
  z-index: 1001;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
  font-weight: 800;
  font-size: 18px;
  color: var(--primary-black);
  letter-spacing: -0.01em;
  white-space: nowrap;
}

.nav-logo-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: var(--primary-black);
  color: var(--accent-orange);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 800;
  flex-shrink: 0;
}

.nav-logo span {
  color: var(--primary-black);
}

.nav-logo .highlight {
  color: var(--accent-orange);
}

.nav-search {
  flex: 1;
  max-width: 480px;
  min-width: 160px;
  display: flex;
  align-items: center;
  background: var(--bg-ice);
  border: 1px solid var(--border-light);
  border-radius: 999px;
  padding: 9px 18px;
  gap: 8px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
  cursor: text;
}

.nav-search:focus-within {
  background: var(--bg-white);
  border-color: var(--accent-orange);
  box-shadow: 0 0 0 3px rgba(242, 160, 61, 0.25);
}

.nav-search svg {
  flex-shrink: 0;
  width: 16px;
  height: 16px;
  color: var(--text-secondary);
}

.nav-search input {
  flex: 1;
  border: none;
  background: transparent;
  font-size: 14px;
  color: var(--text-warm);
  min-width: 0;
}

.nav-search input::placeholder {
  color: var(--text-secondary);
  font-size: 13px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
  font-size: 13px;
  font-weight: 500;
}

.nav-links a {
  color: var(--text-warm);
  position: relative;
  padding: 4px 0;
  white-space: nowrap;
  transition: color 0.2s ease;
}

.nav-links a::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-orange);
  transition: width 0.25s ease;
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.nav-links a.active {
  color: var(--accent-orange-hover);
  font-weight: 700;
}

.nav-links a:hover {
  color: var(--accent-orange-hover);
}

.nav-toggle {
  display: none;
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: var(--bg-ice);
  border: 1px solid var(--border-light);
  transition: background 0.2s ease;
}

.nav-toggle:hover {
  background: var(--border-light);
}

.nav-toggle svg {
  width: 24px;
  height: 24px;
  color: var(--text-warm);
}

/* 移动端导航抽屉 */
.mobile-nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  z-index: 1999;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.mobile-nav-overlay.open {
  opacity: 1;
}

.mobile-nav-drawer {
  position: fixed;
  top: 0;
  right: -320px;
  width: 300px;
  height: 100%;
  background: var(--bg-white);
  z-index: 2000;
  transition: right 0.35s ease;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  box-shadow: -8px 0 32px rgba(0, 0, 0, 0.15);
  overflow-y: auto;
}

.mobile-nav-drawer.open {
  right: 0;
}

.mobile-nav-drawer .mobile-close {
  align-self: flex-end;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--bg-ice);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s ease;
}

.mobile-nav-drawer .mobile-close:hover {
  background: var(--border-light);
}

.mobile-nav-drawer .mobile-close svg {
  width: 22px;
  height: 22px;
  color: var(--text-warm);
}

.mobile-nav-drawer .mobile-brand {
  font-size: 20px;
  font-weight: 800;
  color: var(--primary-black);
  display: flex;
  align-items: center;
  gap: 8px;
}

.mobile-nav-drawer .mobile-brand .highlight {
  color: var(--accent-orange);
}

.mobile-nav-drawer .mobile-links {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-top: 8px;
}

.mobile-nav-drawer .mobile-links a {
  font-size: 15px;
  font-weight: 500;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  color: var(--text-warm);
  transition: background 0.2s ease, color 0.2s ease;
  display: block;
}

.mobile-nav-drawer .mobile-links a:hover,
.mobile-nav-drawer .mobile-links a.active {
  background: var(--bg-ice);
  color: var(--accent-orange-hover);
  font-weight: 700;
}

.mobile-nav-drawer .mobile-search {
  display: flex;
  align-items: center;
  background: var(--bg-ice);
  border: 1px solid var(--border-light);
  border-radius: 999px;
  padding: 10px 16px;
  gap: 8px;
  margin-top: 8px;
}

.mobile-nav-drawer .mobile-search svg {
  width: 16px;
  height: 16px;
  color: var(--text-secondary);
  flex-shrink: 0;
}

.mobile-nav-drawer .mobile-search input {
  flex: 1;
  border: none;
  background: transparent;
  font-size: 14px;
  color: var(--text-warm);
  min-width: 0;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  padding: 12px 28px;
  font-size: 15px;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease, transform 0.15s ease;
  white-space: nowrap;
  border: 1.5px solid transparent;
}

.btn:active {
  transform: translateY(1px);
}

.btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(242, 160, 61, 0.35);
}

.btn-primary {
  background: var(--accent-orange);
  color: var(--primary-black);
  border-color: var(--accent-orange);
}

.btn-primary:hover {
  background: var(--accent-orange-hover);
  border-color: var(--accent-orange-hover);
}

.btn-secondary {
  background: transparent;
  color: var(--primary-black);
  border-color: var(--primary-black);
}

.btn-secondary:hover {
  background: var(--primary-black);
  color: var(--bg-white);
}

.btn-text {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
  font-size: 14px;
  color: var(--primary-black);
  position: relative;
  padding: 4px 0;
  transition: color 0.2s ease;
}

.btn-text::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--accent-orange);
  transform-origin: left;
  transform: scaleX(0);
  transition: transform 0.25s ease;
}

.btn-text:hover {
  color: var(--accent-orange-hover);
}

.btn-text:hover::after {
  transform: scaleX(1);
}

.btn-text .arrow {
  transition: transform 0.25s ease;
}

.btn-text:hover .arrow {
  transform: translateX(4px);
}

/* ===== 面包屑 ===== */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-secondary);
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.breadcrumb a {
  color: var(--text-secondary);
  transition: color 0.2s ease;
}

.breadcrumb a:hover {
  color: var(--accent-orange-hover);
}

.breadcrumb .separator {
  color: var(--border-light);
  user-select: none;
}

.breadcrumb .current {
  color: var(--primary-black);
  font-weight: 600;
}

/* ===== 分类页 Hero ===== */
.category-hero {
  background: linear-gradient(180deg, var(--bg-white) 0%, var(--bg-ice) 100%);
  border-bottom: 1px solid var(--border-light);
  padding: 56px 0 64px;
  position: relative;
  overflow: hidden;
}

.category-hero::before {
  content: "";
  position: absolute;
  top: -120px;
  right: -80px;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(242, 160, 61, 0.1), transparent 70%);
  pointer-events: none;
}

.category-hero .hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.category-hero .hero-text h1 {
  font-size: 42px;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--primary-black);
  margin: 0 0 20px;
}

.category-hero .hero-text h1 .highlight {
  color: var(--accent-orange);
  position: relative;
}

.category-hero .hero-text h1 .highlight::after {
  content: "";
  position: absolute;
  bottom: 4px;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--accent-orange);
  border-radius: 2px;
  opacity: 0.5;
}

.category-hero .hero-text .hero-desc {
  font-size: 16px;
  line-height: 1.9;
  color: var(--text-secondary);
  margin: 0 0 28px;
  max-width: 540px;
}

.category-hero .hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.category-hero .hero-stats {
  display: flex;
  gap: 24px;
  margin-top: 32px;
  flex-wrap: wrap;
}

.category-hero .hero-stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.category-hero .hero-stat .stat-number {
  font-family: var(--font-en);
  font-size: 32px;
  font-weight: 800;
  color: var(--primary-black);
  line-height: 1.2;
}

.category-hero .hero-stat .stat-number em {
  font-style: normal;
  color: var(--accent-orange);
  margin-right: 2px;
}

.category-hero .hero-stat .stat-label {
  font-size: 13px;
  color: var(--text-secondary);
}

.category-hero .hero-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-hover);
  position: relative;
  aspect-ratio: 4/3;
  background-color: var(--border-light);
}

.category-hero .hero-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.category-hero .hero-image .image-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 28px 24px;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.7), transparent);
  color: #fff;
}

.category-hero .hero-image .image-overlay strong {
  display: block;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 4px;
}

.category-hero .hero-image .image-overlay span {
  font-size: 13px;
  opacity: 0.85;
}

/* ===== 版块标题 ===== */
.section-head {
  margin-bottom: 40px;
}

.section-head .section-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  color: var(--accent-orange-hover);
  background: rgba(242, 160, 61, 0.12);
  padding: 4px 12px;
  border-radius: var(--radius-xs);
  letter-spacing: 0.04em;
  margin-bottom: 12px;
}

.section-head h2 {
  font-size: 30px;
  font-weight: 700;
  line-height: 1.25;
  color: var(--primary-black);
  margin: 0 0 16px;
  letter-spacing: -0.01em;
}

.section-head p {
  font-size: 15px;
  color: var(--text-secondary);
  margin: 0;
  max-width: 680px;
  line-height: 1.8;
}

/* ===== 图集墙 ===== */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.gallery-card {
  border-radius: var(--radius-md);
  overflow: hidden;
  position: relative;
  cursor: pointer;
  aspect-ratio: 1;
  background: var(--border-light);
  box-shadow: var(--shadow-card);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.gallery-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
}

.gallery-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.gallery-card:hover img {
  transform: scale(1.04);
}

.gallery-card .gallery-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 20px 16px;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.75), transparent);
  color: #fff;
}

.gallery-card .gallery-caption .gallery-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  background: var(--accent-orange);
  color: var(--primary-black);
  padding: 3px 8px;
  border-radius: 2px;
  margin-bottom: 6px;
}

.gallery-card .gallery-caption h4 {
  font-size: 15px;
  font-weight: 700;
  margin: 0;
  line-height: 1.4;
}

/* ===== 手风琴 ===== */
.accordion-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.accordion-item {
  background: var(--bg-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: box-shadow 0.25s ease, border-color 0.25s ease;
}

.accordion-item:hover {
  border-color: #d8d8d2;
  box-shadow: var(--shadow-card);
}

.accordion-item.open {
  background: var(--bg-ice);
  border-color: var(--accent-orange);
  box-shadow: var(--shadow-card);
}

.accordion-header {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 20px;
  cursor: pointer;
  user-select: none;
  transition: background 0.2s ease;
}

.accordion-header:hover {
  background: rgba(242, 160, 61, 0.04);
}

.accordion-header .acc-number {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--primary-black);
  color: var(--accent-orange);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-en);
  font-weight: 800;
  font-size: 14px;
}

.accordion-header .acc-title {
  flex: 1;
  font-size: 16px;
  font-weight: 700;
  color: var(--primary-black);
  line-height: 1.4;
}

.accordion-header .acc-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  transition: transform 0.3s ease;
  color: var(--text-secondary);
}

.accordion-item.open .acc-icon {
  transform: rotate(180deg);
  color: var(--accent-orange);
}

.accordion-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
  padding: 0 20px;
}

.accordion-item.open .accordion-body {
  max-height: 500px;
  padding: 0 20px 20px;
}

.accordion-body p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.9;
  margin: 0 0 12px;
}

.accordion-body .acc-meta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 12px;
  color: var(--text-secondary);
}

.accordion-body .acc-meta span {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* ===== 数据看板 ===== */
.stats-bar {
  background: var(--primary-black);
  border-radius: var(--radius-lg);
  padding: 48px 40px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  box-shadow: var(--shadow-deep);
}

.stats-bar .stat-block {
  text-align: center;
}

.stats-bar .stat-block .stat-num {
  font-family: var(--font-en);
  font-size: 44px;
  font-weight: 800;
  color: var(--accent-orange);
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.stats-bar .stat-block .stat-unit {
  font-size: 16px;
  font-weight: 600;
  color: var(--accent-orange);
  margin-left: 2px;
}

.stats-bar .stat-block .stat-desc {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.75);
  margin-top: 6px;
}

/* ===== 亮点卡片 ===== */
.highlight-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.highlight-card {
  background: var(--bg-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-card);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  position: relative;
  overflow: hidden;
}

.highlight-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.highlight-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--accent-orange);
  border-radius: 4px 0 0 4px;
  opacity: 0;
  transition: opacity 0.25s ease;
}

.highlight-card:hover::before {
  opacity: 1;
}

.highlight-card .card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: var(--primary-black);
  color: var(--accent-orange);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-weight: 800;
  margin-bottom: 16px;
}

.highlight-card h3 {
  font-size: 19px;
  font-weight: 700;
  color: var(--primary-black);
  margin: 0 0 10px;
  line-height: 1.4;
}

.highlight-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin: 0;
}

/* ===== 标签云 ===== */
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.tag-cloud .tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: 999px;
  background: var(--bg-white);
  border: 1px solid var(--border-light);
  color: var(--text-warm);
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.tag-cloud .tag:hover {
  background: var(--primary-black);
  border-color: var(--primary-black);
  color: var(--accent-orange);
}

.tag-cloud .tag .tag-count {
  font-size: 11px;
  font-weight: 700;
  background: var(--bg-ice);
  color: var(--text-secondary);
  padding: 2px 6px;
  border-radius: 4px;
}

.tag-cloud .tag:hover .tag-count {
  background: rgba(255, 255, 255, 0.15);
  color: var(--accent-orange);
}

/* ===== FAQ ===== */
.faq-section {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  padding: 48px 40px;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.faq-item {
  border-bottom: 1px solid var(--border-light);
  transition: background 0.2s ease;
}

.faq-item:last-child {
  border-bottom: none;
}

.faq-item.open {
  background: var(--bg-ice);
  border-radius: var(--radius-md);
  border-bottom-color: transparent;
}

.faq-item.open + .faq-item {
  border-top-color: transparent;
}

.faq-question {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 16px;
  cursor: pointer;
  user-select: none;
  transition: background 0.2s ease;
  border-radius: var(--radius-md);
}

.faq-question:hover {
  background: rgba(242, 160, 61, 0.05);
}

.faq-question .faq-q {
  flex: 1;
  font-size: 15px;
  font-weight: 700;
  color: var(--primary-black);
  line-height: 1.5;
}

.faq-question .faq-icon {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  color: var(--text-secondary);
  transition: transform 0.3s ease;
}

.faq-item.open .faq-icon {
  transform: rotate(180deg);
  color: var(--accent-orange);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
  padding: 0 16px;
}

.faq-item.open .faq-answer {
  max-height: 300px;
  padding: 0 16px 18px;
}

.faq-answer p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.9;
  margin: 0;
  border-left: 3px solid var(--accent-orange);
  padding-left: 14px;
}

/* ===== CTA ===== */
.cta-section {
  background: var(--primary-black);
  border-radius: var(--radius-lg);
  padding: 56px 48px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
  position: relative;
  overflow: hidden;
}

.cta-section::after {
  content: "";
  position: absolute;
  top: -60px;
  right: -40px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(242, 160, 61, 0.15), transparent 70%);
  pointer-events: none;
}

.cta-section h2 {
  font-size: 28px;
  font-weight: 800;
  color: #ffffff;
  margin: 0 0 16px;
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.cta-section h2 .highlight {
  color: var(--accent-orange);
}

.cta-section .cta-desc {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.75);
  line-height: 1.9;
  margin: 0 0 24px;
}

.cta-section .contact-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 24px;
}

.cta-section .contact-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.85);
  list-style: none;
}

.cta-section .contact-list li::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-orange);
  flex-shrink: 0;
}

.cta-section .cta-form {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  position: relative;
  z-index: 1;
}

.cta-section .cta-form .form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.cta-section .cta-form label {
  font-size: 13px;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 4px;
  display: block;
}

.cta-section .cta-form input,
.cta-section .cta-form textarea {
  width: 100%;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 8px;
  padding: 11px 14px;
  font-size: 14px;
  color: #ffffff;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  box-sizing: border-box;
}

.cta-section .cta-form input::placeholder,
.cta-section .cta-form textarea::placeholder {
  color: rgba(255, 255, 255, 0.45);
}

.cta-section .cta-form input:focus,
.cta-section .cta-form textarea:focus {
  border-color: var(--accent-orange);
  box-shadow: 0 0 0 3px rgba(242, 160, 61, 0.3);
}

.cta-section .cta-form textarea {
  min-height: 100px;
  resize: vertical;
}

.cta-section .cta-form .btn {
  align-self: flex-start;
  background: var(--accent-orange);
  color: var(--primary-black);
  border-color: var(--accent-orange);
  font-weight: 700;
}

.cta-section .cta-form .btn:hover {
  background: var(--accent-orange-hover);
  border-color: var(--accent-orange-hover);
}

/* ===== 页脚 ===== */
.site-footer {
  background: var(--primary-black);
  color: rgba(255, 255, 255, 0.8);
  padding: 64px 0 24px;
  margin-top: 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand .nav-logo {
  color: #ffffff;
  font-size: 20px;
  margin-bottom: 16px;
}

.footer-brand .nav-logo span {
  color: #ffffff;
}

.footer-brand .nav-logo .highlight {
  color: var(--accent-orange);
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.9;
  color: rgba(255, 255, 255, 0.7);
  margin: 0;
  max-width: 340px;
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  color: #ffffff;
  margin: 0 0 16px;
}

.footer-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col ul li {
  font-size: 14px;
}

.footer-col ul li a {
  color: rgba(255, 255, 255, 0.7);
  transition: color 0.2s ease;
}

.footer-col ul li a:hover {
  color: var(--accent-orange);
}

.footer-search {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}

.footer-search input {
  flex: 1;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 13px;
  color: #ffffff;
  min-width: 0;
}

.footer-search input::placeholder {
  color: rgba(255, 255, 255, 0.45);
}

.footer-search .btn {
  padding: 10px 16px;
  font-size: 13px;
  background: var(--accent-orange);
  color: var(--primary-black);
  border-color: var(--accent-orange);
  border-radius: 8px;
}

.footer-search .btn:hover {
  background: var(--accent-orange-hover);
  border-color: var(--accent-orange-hover);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-top: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.55);
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.55);
  transition: color 0.2s ease;
}

.footer-bottom a:hover {
  color: var(--accent-orange);
}

.footer-bottom .footer-links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .container {
    padding-left: 24px;
    padding-right: 24px;
  }

  .nav-inner {
    padding: 12px 24px;
    gap: 12px;
  }

  .nav-links {
    gap: 10px;
    font-size: 12px;
  }

  .nav-search {
    max-width: 300px;
  }

  .category-hero .hero-inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .category-hero .hero-text h1 {
    font-size: 34px;
  }

  .gallery-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .stats-bar {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    padding: 36px 28px;
  }

  .highlight-cards {
    grid-template-columns: repeat(2, 1fr);
  }

  .cta-section {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 40px 28px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 768px) {
  .nav-inner {
    flex-wrap: wrap;
    gap: 8px;
    padding: 10px 16px;
  }

  .nav-logo {
    font-size: 16px;
  }

  .nav-logo-icon {
    width: 28px;
    height: 28px;
    font-size: 14px;
  }

  .nav-search {
    order: 3;
    flex-basis: 100%;
    max-width: 100%;
    padding: 8px 14px;
  }

  .nav-links {
    display: none;
  }

  .nav-toggle {
    display: flex;
    margin-left: auto;
  }

  .mobile-nav-overlay.open {
    display: block;
  }

  .category-hero {
    padding: 40px 0 48px;
  }

  .category-hero .hero-text h1 {
    font-size: 30px;
  }

  .category-hero .hero-text .hero-desc {
    font-size: 15px;
  }

  .category-hero .hero-stats {
    gap: 16px;
  }

  .category-hero .hero-stat .stat-number {
    font-size: 26px;
  }

  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .stats-bar {
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    padding: 28px 20px;
  }

  .stats-bar .stat-block .stat-num {
    font-size: 34px;
  }

  .highlight-cards {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .faq-section {
    padding: 32px 20px;
  }

  .cta-section {
    padding: 32px 20px;
  }

  .cta-section .cta-form .form-row {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  section {
    padding: var(--section-padding-mobile) 0;
  }

  .section-head h2 {
    font-size: 24px;
  }
}

@media (max-width: 520px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }

  .nav-inner {
    padding: 8px 16px;
  }

  .category-hero .hero-text h1 {
    font-size: 26px;
  }

  .category-hero .hero-actions {
    flex-direction: column;
  }

  .category-hero .hero-actions .btn {
    width: 100%;
  }

  .category-hero .hero-stats {
    flex-direction: column;
    gap: 8px;
  }

  .gallery-grid {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .stats-bar {
    grid-template-columns: 1fr;
    gap: 16px;
    padding: 24px 16px;
  }

  .accordion-header {
    padding: 14px 12px;
    gap: 10px;
  }

  .accordion-header .acc-number {
    width: 28px;
    height: 28px;
    font-size: 12px;
  }

  .accordion-header .acc-title {
    font-size: 14px;
  }

  .faq-question {
    padding: 14px 10px;
    gap: 10px;
  }

  .faq-question .faq-q {
    font-size: 14px;
  }

  .cta-section h2 {
    font-size: 22px;
  }

  .footer-search {
    flex-direction: column;
  }

  .footer-search .btn {
    width: 100%;
  }
}

/* roulang page: category7 */
:root {
            --primary-black: #1A1A1A;
            --secondary-dark: #262626;
            --accent-orange: #F2A03D;
            --accent-orange-hover: #D98828;
            --bg-ice: #F7F7F5;
            --bg-white: #FFFFFF;
            --text-warm: #2A2A2A;
            --text-secondary: #5C5C5C;
            --border-light: #E8E8E4;
            --success: #3F7D5A;
            --warning: #C17B3C;
            --error: #B5493F;
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 10px;
            --radius-xs: 4px;
            --shadow-card: 0 2px 12px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 8px 28px rgba(0, 0, 0, 0.12);
            --shadow-deep: 0 4px 24px rgba(0, 0, 0, 0.18);
            --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-en: "Inter", "SF Pro Display", sans-serif;
            --section-padding-desktop: 80px;
            --section-padding-mobile: 48px;
            --container-max: 1200px;
            --transition: 0.25s ease;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-cn);
            font-size: 16px;
            font-weight: 400;
            line-height: 1.8;
            color: var(--text-warm);
            background-color: var(--bg-ice);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition), background-color var(--transition), border-color var(--transition), opacity var(--transition);
        }

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            font-size: inherit;
        }

        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            outline: none;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 32px;
            padding-right: 32px;
        }

        section {
            padding: var(--section-padding-desktop) 0;
            position: relative;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            transition: box-shadow 0.3s ease;
        }

        .site-header.scrolled {
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.08);
        }

        .nav-inner {
            display: flex;
            align-items: center;
            gap: 20px;
            padding: 12px 32px;
            max-width: var(--container-max);
            margin: 0 auto;
            flex-wrap: nowrap;
            position: relative;
            z-index: 1001;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
            font-weight: 800;
            font-size: 18px;
            color: var(--primary-black);
            letter-spacing: -0.01em;
            white-space: nowrap;
        }

        .nav-logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: var(--primary-black);
            color: var(--accent-orange);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 800;
            flex-shrink: 0;
        }

        .nav-logo span {
            color: var(--primary-black);
        }

        .nav-logo .highlight {
            color: var(--accent-orange);
        }

        .nav-search {
            flex: 1;
            max-width: 520px;
            min-width: 180px;
            display: flex;
            align-items: center;
            background: var(--bg-ice);
            border: 1px solid var(--border-light);
            border-radius: 999px;
            padding: 10px 18px;
            gap: 10px;
            transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
            cursor: text;
        }

        .nav-search:focus-within {
            background: var(--bg-white);
            border-color: var(--accent-orange);
            box-shadow: 0 0 0 3px rgba(242, 160, 61, 0.25);
        }

        .nav-search svg {
            flex-shrink: 0;
            width: 18px;
            height: 18px;
            color: var(--text-secondary);
        }

        .nav-search input {
            flex: 1;
            border: none;
            background: transparent;
            font-size: 14px;
            color: var(--text-warm);
            min-width: 0;
        }

        .nav-search input::placeholder {
            color: var(--text-secondary);
            font-size: 14px;
        }

        .nav-search .search-filter-hint {
            flex-shrink: 0;
            font-size: 12px;
            color: var(--text-secondary);
            border-left: 1px solid var(--border-light);
            padding-left: 12px;
            white-space: nowrap;
            user-select: none;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-shrink: 0;
            font-size: 14px;
            font-weight: 500;
        }

        .nav-links a {
            color: var(--text-warm);
            position: relative;
            padding: 4px 0;
            white-space: nowrap;
            transition: color 0.2s ease;
        }

        .nav-links a::after {
            content: "";
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-orange);
            transition: width 0.3s ease;
        }

        .nav-links a:hover {
            color: var(--accent-orange);
        }

        .nav-links a:hover::after {
            width: 100%;
        }

        .nav-links a.active {
            color: var(--accent-orange);
            font-weight: 600;
        }

        .nav-links a.active::after {
            width: 100%;
        }

        .menu-toggle {
            display: none;
            flex-shrink: 0;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            align-items: center;
            justify-content: center;
            background: var(--bg-white);
            color: var(--primary-black);
            transition: background var(--transition);
        }

        .menu-toggle:hover {
            background: var(--bg-ice);
        }

        /* ===== Hero ===== */
        .community-hero {
            background: var(--primary-black);
            color: #fff;
            padding: 72px 0 80px;
            position: relative;
            overflow: hidden;
        }

        .community-hero::before {
            content: "";
            position: absolute;
            top: -40%;
            right: -15%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(242, 160, 61, 0.18) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .community-hero::after {
            content: "";
            position: absolute;
            bottom: -30%;
            left: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(242, 160, 61, 0.1) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .community-hero .container {
            position: relative;
            z-index: 1;
        }

        .hero-breadcrumb {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 20px;
            display: flex;
            gap: 8px;
            align-items: center;
        }

        .hero-breadcrumb a {
            color: rgba(255, 255, 255, 0.7);
            transition: color var(--transition);
        }

        .hero-breadcrumb a:hover {
            color: var(--accent-orange);
        }

        .hero-breadcrumb .sep {
            color: rgba(255, 255, 255, 0.35);
        }

        .hero-title {
            font-size: 44px;
            font-weight: 800;
            line-height: 1.15;
            letter-spacing: -0.02em;
            margin-bottom: 20px;
            max-width: 720px;
        }

        .hero-title .underline-orange {
            border-bottom: 4px solid var(--accent-orange);
            padding-bottom: 2px;
        }

        .hero-desc {
            font-size: 17px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.75);
            max-width: 620px;
            margin-bottom: 32px;
        }

        .hero-search-bar {
            display: flex;
            align-items: center;
            background: var(--bg-white);
            border-radius: 999px;
            padding: 12px 24px;
            gap: 12px;
            max-width: 640px;
            transition: box-shadow 0.3s ease;
        }

        .hero-search-bar:focus-within {
            box-shadow: 0 0 0 4px rgba(242, 160, 61, 0.35);
        }

        .hero-search-bar svg {
            width: 22px;
            height: 22px;
            color: var(--text-secondary);
            flex-shrink: 0;
        }

        .hero-search-bar input {
            flex: 1;
            border: none;
            background: transparent;
            font-size: 16px;
            color: var(--text-warm);
        }

        .hero-search-bar input::placeholder {
            color: var(--text-secondary);
        }

        .hero-search-btn {
            background: var(--accent-orange);
            color: var(--primary-black);
            font-weight: 600;
            padding: 10px 28px;
            border-radius: 999px;
            font-size: 15px;
            flex-shrink: 0;
            transition: background var(--transition), transform 0.2s ease;
            border: none;
        }

        .hero-search-btn:hover {
            background: var(--accent-orange-hover);
            transform: translateY(-1px);
        }

        .hero-search-btn:active {
            transform: translateY(1px);
        }

        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 20px;
        }

        .hero-tag {
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.22);
            color: rgba(255, 255, 255, 0.85);
            padding: 6px 16px;
            border-radius: 999px;
            font-size: 13px;
            cursor: pointer;
            transition: background var(--transition), border-color var(--transition), color var(--transition);
            user-select: none;
        }

        .hero-tag:hover {
            background: var(--accent-orange);
            border-color: var(--accent-orange);
            color: var(--primary-black);
        }

        /* ===== 数据统计条 ===== */
        .community-stats {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            padding: 32px 0;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .stat-item {
            text-align: center;
            padding: 12px 16px;
            border-radius: var(--radius-md);
            transition: background var(--transition);
        }

        .stat-item:hover {
            background: var(--bg-ice);
        }

        .stat-number {
            font-family: var(--font-en);
            font-size: 40px;
            font-weight: 800;
            color: var(--accent-orange);
            line-height: 1.2;
            letter-spacing: -0.01em;
        }

        .stat-label {
            font-size: 14px;
            color: var(--text-secondary);
            margin-top: 4px;
        }

        /* ===== 热门话题 ===== */
        .community-topics {
            background: var(--bg-ice);
        }

        .section-heading {
            margin-bottom: 36px;
        }

        .section-heading h2 {
            font-size: 30px;
            font-weight: 700;
            line-height: 1.25;
            color: var(--primary-black);
            margin-bottom: 12px;
        }

        .section-heading h2 .orange-underline {
            border-bottom: 3px solid var(--accent-orange);
            padding-bottom: 2px;
        }

        .section-heading p {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 560px;
            line-height: 1.7;
        }

        .topic-list {
            display: grid;
            grid-template-columns: 1fr;
            gap: 16px;
        }

        .topic-card {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition), transform var(--transition);
        }

        .topic-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }

        .topic-rank {
            flex-shrink: 0;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--primary-black);
            color: var(--accent-orange);
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: var(--font-en);
            font-weight: 800;
            font-size: 16px;
        }

        .topic-content {
            flex: 1;
            min-width: 0;
        }

        .topic-title {
            font-size: 18px;
            font-weight: 600;
            color: var(--primary-black);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .topic-title a:hover {
            color: var(--accent-orange);
        }

        .topic-excerpt {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .topic-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: var(--text-secondary);
        }

        .topic-meta span {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        /* ===== 社区达人 ===== */
        .community-experts {
            background: var(--bg-white);
        }

        .experts-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .expert-card {
            background: var(--bg-ice);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-light);
            transition: box-shadow var(--transition), transform var(--transition);
        }

        .expert-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .expert-card img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: 0;
        }

        .expert-card-body {
            padding: 20px 20px 24px;
        }

        .expert-card-body h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--primary-black);
            margin-bottom: 4px;
        }

        .expert-card-body .expert-role {
            font-size: 13px;
            color: var(--accent-orange);
            font-weight: 500;
            margin-bottom: 10px;
        }

        .expert-card-body p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ===== 深度正文 ===== */
        .community-deep {
            background: var(--bg-ice);
        }

        .deep-content-wrapper {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .deep-text h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary-black);
            margin-bottom: 18px;
            line-height: 1.3;
        }

        .deep-text p {
            font-size: 16px;
            line-height: 1.85;
            color: var(--text-warm);
            margin-bottom: 16px;
        }

        .deep-text p strong {
            color: var(--primary-black);
        }

        .deep-image img {
            width: 100%;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-deep);
        }

        /* ===== 参与步骤 ===== */
        .community-steps {
            background: var(--bg-white);
        }

        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .step-card {
            text-align: center;
            padding: 28px 20px;
            background: var(--bg-ice);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            transition: background var(--transition), border-color var(--transition);
        }

        .step-card:hover {
            background: #f3f1ec;
            border-color: var(--accent-orange);
        }

        .step-number {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary-black);
            color: var(--accent-orange);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 14px;
            font-family: var(--font-en);
            font-weight: 800;
            font-size: 20px;
        }

        .step-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--primary-black);
            margin-bottom: 8px;
        }

        .step-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.65;
        }

        /* ===== 社区图集 ===== */
        .community-gallery {
            background: var(--bg-ice);
        }

        .gallery-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }

        .gallery-item {
            border-radius: var(--radius-md);
            overflow: hidden;
            position: relative;
            aspect-ratio: 1 / 1;
        }

        .gallery-item img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
            border-radius: var(--radius-md);
        }

        .gallery-item:hover img {
            transform: scale(1.05);
        }

        .gallery-item .gallery-caption {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 16px 14px 10px;
            background: linear-gradient(transparent, rgba(0, 0, 0, 0.7));
            color: #fff;
            font-size: 13px;
            font-weight: 500;
            z-index: 1;
        }

        /* ===== FAQ ===== */
        .community-faq {
            background: var(--bg-white);
        }

        .faq-list {
            display: grid;
            grid-template-columns: 1fr;
            gap: 12px;
            max-width: 820px;
        }

        .faq-item {
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: border-color var(--transition);
        }

        .faq-item.open {
            border-color: var(--accent-orange);
        }

        .faq-question {
            width: 100%;
            text-align: left;
            padding: 18px 22px;
            font-size: 16px;
            font-weight: 600;
            color: var(--primary-black);
            background: var(--bg-white);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            transition: background var(--transition);
            cursor: pointer;
            border: none;
            font-family: inherit;
        }

        .faq-question:hover {
            background: var(--bg-ice);
        }

        .faq-question .faq-indicator {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--bg-ice);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            color: var(--text-secondary);
            transition: transform 0.3s ease, background 0.3s ease, color 0.3s ease;
        }

        .faq-item.open .faq-question .faq-indicator {
            background: var(--accent-orange);
            color: var(--primary-black);
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.3s ease;
            padding: 0 22px;
            background: var(--bg-white);
        }

        .faq-item.open .faq-answer {
            max-height: 260px;
            padding: 0 22px 20px;
        }

        .faq-answer p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.75;
            border-left: 3px solid var(--accent-orange);
            padding-left: 14px;
        }

        /* ===== CTA ===== */
        .community-cta {
            background: var(--primary-black);
            color: #fff;
            padding: 64px 0;
        }

        .cta-wrapper {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .cta-info h2 {
            font-size: 30px;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 14px;
            color: #fff;
        }

        .cta-info h2 .orange-underline {
            border-bottom: 3px solid var(--accent-orange);
            padding-bottom: 2px;
        }

        .cta-info p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.72);
            line-height: 1.75;
            margin-bottom: 20px;
        }

        .cta-contact-list {
            list-style: none;
            display: grid;
            gap: 10px;
        }

        .cta-contact-list li {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.8);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .cta-contact-list li svg {
            width: 17px;
            height: 17px;
            color: var(--accent-orange);
            flex-shrink: 0;
        }

        .cta-form {
            background: var(--secondary-dark);
            border-radius: var(--radius-lg);
            padding: 28px 28px 30px;
            border: 1px solid rgba(255, 255, 255, 0.12);
        }

        .cta-form h3 {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }

        .form-group {
            margin-bottom: 16px;
        }

        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 6px;
        }

        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: 12px 14px;
            border-radius: var(--radius-sm);
            border: 1px solid rgba(255, 255, 255, 0.18);
            background: transparent;
            color: #fff;
            font-size: 15px;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
        }

        .form-group input:focus,
        .form-group textarea:focus {
            border-color: var(--accent-orange);
            box-shadow: 0 0 0 3px rgba(242, 160, 61, 0.25);
            outline: none;
        }

        .form-group input::placeholder,
        .form-group textarea::placeholder {
            color: rgba(255, 255, 255, 0.38);
        }

        .form-group textarea {
            resize: vertical;
            min-height: 90px;
        }

        .btn-primary {
            background: var(--accent-orange);
            color: var(--primary-black);
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 15px;
            border: none;
            transition: background var(--transition), transform 0.2s ease;
            cursor: pointer;
        }

        .btn-primary:hover {
            background: var(--accent-orange-hover);
            transform: translateY(-1px);
        }

        .btn-primary:active {
            transform: translateY(1px);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary-black);
            color: rgba(255, 255, 255, 0.72);
            padding: 56px 0 28px;
            font-size: 14px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 36px;
        }

        .footer-brand .nav-logo {
            margin-bottom: 12px;
            color: #fff;
        }

        .footer-brand .nav-logo span {
            color: #fff;
        }

        .footer-brand p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.7;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
        }

        .footer-col ul {
            list-style: none;
            display: grid;
            gap: 8px;
        }

        .footer-col ul a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 14px;
            transition: color var(--transition);
        }

        .footer-col ul a:hover {
            color: var(--accent-orange);
        }

        .footer-search {
            display: flex;
            gap: 8px;
            align-items: center;
            border-radius: 999px;
        }

        .footer-search input {
            flex: 1;
            padding: 10px 16px;
            border-radius: 999px;
            border: 1px solid rgba(255, 255, 255, 0.18);
            background: transparent;
            color: #fff;
            font-size: 13px;
        }

        .footer-search input::placeholder {
            color: rgba(255, 255, 255, 0.38);
        }

        .footer-search input:focus {
            border-color: var(--accent-orange);
            box-shadow: 0 0 0 3px rgba(242, 160, 61, 0.2);
        }

        .footer-search .btn-primary {
            padding: 10px 20px;
            font-size: 13px;
            flex-shrink: 0;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.55);
            transition: color var(--transition);
        }

        .footer-bottom a:hover {
            color: var(--accent-orange);
        }

        .footer-bottom .sep {
            margin: 0 8px;
            color: rgba(255, 255, 255, 0.25);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .nav-inner {
                gap: 14px;
                padding: 10px 20px;
            }
            .nav-links {
                gap: 10px;
                font-size: 13px;
            }
            .nav-links a {
                white-space: nowrap;
            }
            .nav-search {
                max-width: 360px;
            }
            .hero-title {
                font-size: 36px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .experts-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .gallery-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .deep-content-wrapper {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .cta-wrapper {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }

        @media (max-width: 768px) {
            section {
                padding: var(--section-padding-mobile) 0;
            }
            .container {
                padding-left: 18px;
                padding-right: 18px;
            }
            .nav-inner {
                padding: 10px 16px;
                gap: 10px;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: var(--bg-white);
                border-bottom: 1px solid var(--border-light);
                flex-direction: column;
                padding: 16px 20px;
                gap: 12px;
                box-shadow: var(--shadow-card);
                z-index: 1000;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                font-size: 15px;
                padding: 8px 0;
                width: 100%;
            }
            .menu-toggle {
                display: flex;
            }
            .nav-search {
                max-width: none;
                flex: 1;
                min-width: 0;
                padding: 8px 14px;
            }
            .nav-search .search-filter-hint {
                display: none;
            }
            .hero-title {
                font-size: 28px;
                line-height: 1.25;
            }
            .hero-desc {
                font-size: 15px;
            }
            .hero-search-bar {
                padding: 10px 16px;
                flex-wrap: wrap;
                gap: 8px;
            }
            .hero-search-bar input {
                flex: 1 1 100%;
                font-size: 15px;
                padding: 6px 0;
            }
            .hero-search-btn {
                width: 100%;
                padding: 10px;
                text-align: center;
            }
            .stat-number {
                font-size: 32px;
            }
            .experts-grid {
                grid-template-columns: 1fr;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .gallery-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 10px;
            }
            .section-heading h2 {
                font-size: 24px;
            }
            .topic-card {
                flex-direction: column;
                gap: 10px;
                padding: 16px 18px;
            }
            .topic-rank {
                width: 30px;
                height: 30px;
                font-size: 14px;
            }
            .topic-title {
                font-size: 16px;
            }
            .cta-info h2 {
                font-size: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media (max-width: 520px) {
            .hero-title {
                font-size: 24px;
            }
            .hero-desc {
                font-size: 14px;
            }
            .hero-tags {
                gap: 6px;
            }
            .hero-tag {
                font-size: 12px;
                padding: 5px 12px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }
            .stat-number {
                font-size: 28px;
            }
            .stat-label {
                font-size: 12px;
            }
            .gallery-grid {
                grid-template-columns: 1fr;
            }
            .topic-meta {
                gap: 8px;
                font-size: 12px;
                flex-wrap: wrap;
            }
            .faq-question {
                font-size: 14px;
                padding: 14px 16px;
            }
            .faq-answer p {
                font-size: 14px;
            }
        }

/* roulang page: category6 */
:root {
            --primary-black: #1A1A1A;
            --secondary-dark: #262626;
            --accent-orange: #F2A03D;
            --accent-orange-hover: #D98828;
            --bg-ice: #F7F7F5;
            --bg-white: #FFFFFF;
            --text-warm: #2A2A2A;
            --text-secondary: #5C5C5C;
            --border-light: #E8E8E4;
            --success: #3F7D5A;
            --warning: #C17B3C;
            --error: #B5493F;
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 10px;
            --radius-xs: 4px;
            --shadow-card: 0 2px 12px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 8px 28px rgba(0, 0, 0, 0.12);
            --shadow-deep: 0 4px 24px rgba(0, 0, 0, 0.18);
            --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-en: "Inter", "SF Pro Display", sans-serif;
            --section-padding-desktop: 96px;
            --section-padding-mobile: 56px;
            --container-max: 1200px;
            --transition: 0.25s ease;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-cn);
            font-size: 16px;
            font-weight: 400;
            line-height: 1.8;
            color: var(--text-warm);
            background-color: var(--bg-ice);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition), background-color var(--transition), border-color var(--transition), opacity var(--transition);
        }

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            font-size: inherit;
        }

        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            outline: none;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 32px;
            padding-right: 32px;
        }

        section {
            padding: var(--section-padding-desktop) 0;
            position: relative;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            transition: box-shadow 0.3s ease;
        }

        .site-header.scrolled {
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.08);
        }

        .nav-inner {
            display: flex;
            align-items: center;
            gap: 20px;
            padding: 12px 32px;
            max-width: var(--container-max);
            margin: 0 auto;
            flex-wrap: nowrap;
            position: relative;
            z-index: 1001;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
            font-weight: 800;
            font-size: 18px;
            color: var(--primary-black);
            letter-spacing: -0.01em;
            white-space: nowrap;
        }

        .nav-logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: var(--primary-black);
            color: var(--accent-orange);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 800;
            flex-shrink: 0;
        }

        .nav-logo span {
            color: var(--primary-black);
        }

        .nav-logo .highlight {
            color: var(--accent-orange);
        }

        .nav-search {
            flex: 1;
            max-width: 560px;
            min-width: 200px;
            display: flex;
            align-items: center;
            background: var(--bg-ice);
            border: 1px solid var(--border-light);
            border-radius: 999px;
            padding: 10px 20px;
            gap: 10px;
            transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
            cursor: text;
        }

        .nav-search:focus-within {
            background: var(--bg-white);
            border-color: var(--accent-orange);
            box-shadow: 0 0 0 3px rgba(242, 160, 61, 0.25);
        }

        .nav-search svg {
            flex-shrink: 0;
            width: 18px;
            height: 18px;
            color: var(--text-secondary);
        }

        .nav-search input {
            flex: 1;
            border: none;
            background: transparent;
            font-size: 14px;
            color: var(--text-warm);
            min-width: 0;
        }

        .nav-search input::placeholder {
            color: var(--text-secondary);
            font-size: 14px;
        }

        .nav-search .search-filter-hint {
            flex-shrink: 0;
            font-size: 12px;
            color: var(--text-secondary);
            border-left: 1px solid var(--border-light);
            padding-left: 12px;
            white-space: nowrap;
            user-select: none;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 18px;
            flex-shrink: 0;
            font-size: 14px;
            font-weight: 500;
        }

        .nav-links a {
            color: var(--text-warm);
            position: relative;
            padding: 4px 0;
            white-space: nowrap;
            transition: color 0.2s ease;
        }

        .nav-links a::after {
            content: "";
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-orange);
            transition: width 0.25s ease;
        }

        .nav-links a:hover {
            color: var(--accent-orange-hover);
        }

        .nav-links a:hover::after {
            width: 100%;
        }

        .nav-links a.active {
            color: var(--accent-orange-hover);
            font-weight: 600;
        }

        .nav-links a.active::after {
            width: 100%;
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 6px;
            flex-shrink: 0;
        }

        .nav-toggle span {
            width: 24px;
            height: 2px;
            background: var(--primary-black);
            border-radius: 2px;
            transition: 0.3s ease;
        }

        .mobile-search-toggle {
            display: none;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--bg-ice);
            align-items: center;
            justify-content: center;
            color: var(--text-warm);
            flex-shrink: 0;
        }

        /* ===== 面包屑 ===== */
        .breadcrumb-section {
            padding: 28px 0 0;
            background: var(--bg-ice);
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-secondary);
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--text-secondary);
            transition: color var(--transition);
        }

        .breadcrumb a:hover {
            color: var(--accent-orange-hover);
        }

        .breadcrumb .sep {
            color: var(--border-light);
            font-size: 12px;
        }

        .breadcrumb .current {
            color: var(--text-warm);
            font-weight: 500;
        }

        /* ===== Hero ===== */
        .resource-hero {
            padding: 48px 0 72px;
            background: linear-gradient(135deg, var(--bg-white) 0%, var(--bg-ice) 100%);
        }

        .resource-hero .container {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .resource-hero-text h1 {
            font-size: 40px;
            font-weight: 800;
            line-height: 1.15;
            letter-spacing: -0.02em;
            color: var(--primary-black);
            margin-bottom: 20px;
        }

        .resource-hero-text h1 .highlight {
            color: var(--accent-orange);
            position: relative;
        }

        .resource-hero-text h1 .highlight::after {
            content: "";
            position: absolute;
            bottom: -4px;
            left: 0;
            width: 100%;
            height: 4px;
            background: var(--accent-orange);
            border-radius: 2px;
            animation: underlineGrow 0.8s ease forwards;
        }

        @keyframes underlineGrow {
            from {
                width: 0;
            }
            to {
                width: 100%;
            }
        }

        .resource-hero-text .hero-desc {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.9;
            margin-bottom: 28px;
        }

        .resource-hero-text .hero-desc strong {
            color: var(--text-warm);
            font-weight: 600;
        }

        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            transition: all var(--transition);
            cursor: pointer;
            letter-spacing: 0.01em;
        }

        .btn-primary {
            background: var(--accent-orange);
            color: #000000;
        }

        .btn-primary:hover {
            background: var(--accent-orange-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(242, 160, 61, 0.3);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: none;
        }

        .btn-outline {
            background: transparent;
            color: var(--primary-black);
            border: 1.5px solid var(--primary-black);
        }

        .btn-outline:hover {
            background: var(--primary-black);
            color: var(--bg-white);
            transform: translateY(-2px);
        }

        .btn-outline:active {
            transform: translateY(0);
        }

        .hero-ring-wrap {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 32px;
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 36px 32px;
            box-shadow: var(--shadow-card);
        }

        .ring-stats {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .ring-stat-item {
            text-align: center;
        }

        .ring-stat-item .ring-number {
            font-family: var(--font-en);
            font-size: 32px;
            font-weight: 800;
            color: var(--primary-black);
            line-height: 1.2;
        }

        .ring-stat-item .ring-number span {
            color: var(--accent-orange);
        }

        .ring-stat-item .ring-label {
            font-size: 13px;
            color: var(--text-secondary);
            margin-top: 4px;
        }

        .progress-ring-container {
            position: relative;
            width: 140px;
            height: 140px;
            flex-shrink: 0;
        }

        .progress-ring {
            transform: rotate(-90deg);
            width: 140px;
            height: 140px;
        }

        .progress-ring circle {
            fill: none;
            stroke-width: 8;
            stroke-linecap: round;
        }

        .progress-ring .ring-bg {
            stroke: var(--border-light);
        }

        .progress-ring .ring-fg {
            stroke: var(--accent-orange);
            transition: stroke-dashoffset 1s ease;
        }

        .ring-center-text {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            text-align: center;
        }

        .ring-center-text .pct {
            font-family: var(--font-en);
            font-size: 28px;
            font-weight: 800;
            color: var(--primary-black);
            display: block;
            line-height: 1;
        }

        .ring-center-text .label {
            font-size: 12px;
            color: var(--text-secondary);
            margin-top: 4px;
        }

        /* ===== 资源分类切换点 ===== */
        .resource-switcher {
            padding: 0 0 24px;
            background: var(--bg-ice);
        }

        .switcher-dots {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            align-items: center;
            justify-content: flex-start;
        }

        .switcher-dot {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 10px 20px;
            border-radius: 999px;
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            font-size: 14px;
            font-weight: 500;
            color: var(--text-warm);
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .switcher-dot .dot-indicator {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent-orange);
            flex-shrink: 0;
        }

        .switcher-dot:hover {
            border-color: var(--accent-orange);
            color: var(--accent-orange-hover);
            transform: translateY(-2px);
            box-shadow: var(--shadow-card);
        }

        .switcher-dot.active {
            background: var(--primary-black);
            color: var(--bg-white);
            border-color: var(--primary-black);
        }

        .switcher-dot.active .dot-indicator {
            background: var(--accent-orange);
        }

        /* ===== 步骤指南 ===== */
        .steps-section {
            background: var(--bg-white);
        }

        .section-header {
            margin-bottom: 48px;
        }

        .section-header .section-tag {
            display: inline-block;
            padding: 6px 14px;
            background: var(--primary-black);
            color: var(--bg-white);
            font-size: 12px;
            font-weight: 600;
            border-radius: var(--radius-xs);
            letter-spacing: 0.04em;
            margin-bottom: 16px;
        }

        .section-header h2 {
            font-size: 30px;
            font-weight: 700;
            line-height: 1.25;
            color: var(--primary-black);
            margin-bottom: 12px;
        }

        .section-header p {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 720px;
        }

        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .step-card {
            background: var(--bg-ice);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }

        .step-card .step-number {
            font-family: var(--font-en);
            font-size: 48px;
            font-weight: 800;
            color: var(--accent-orange);
            line-height: 1;
            margin-bottom: 16px;
            opacity: 0.85;
        }

        .step-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--primary-black);
            margin-bottom: 10px;
        }

        .step-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .step-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--accent-orange);
        }

        .step-card:hover .step-number {
            color: var(--primary-black);
        }

        /* ===== 核心资源卡片 ===== */
        .core-resources {
            background: var(--bg-ice);
        }

        .resources-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .resource-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
        }

        .resource-card .card-img {
            aspect-ratio: 3/2;
            overflow: hidden;
            background: var(--bg-ice);
            position: relative;
        }

        .resource-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .resource-card:hover .card-img img {
            transform: scale(1.04);
        }

        .resource-card .card-body {
            padding: 20px 24px 24px;
        }

        .resource-card .card-badge {
            display: inline-block;
            padding: 4px 10px;
            background: var(--primary-black);
            color: var(--bg-white);
            font-size: 12px;
            font-weight: 600;
            border-radius: var(--radius-xs);
            margin-bottom: 10px;
        }

        .resource-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--primary-black);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .resource-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 16px;
        }

        .resource-card .card-meta {
            display: flex;
            gap: 16px;
            font-size: 13px;
            color: var(--text-secondary);
            border-top: 1px solid var(--border-light);
            padding-top: 14px;
        }

        .resource-card .card-meta span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .resource-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(242, 160, 61, 0.4);
        }

        /* ===== 深度阅读 ===== */
        .deep-reading {
            background: var(--bg-white);
        }

        .deep-reading .container {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .deep-reading-text h2 {
            font-size: 28px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--primary-black);
            margin-bottom: 16px;
        }

        .deep-reading-text h2 .highlight {
            color: var(--accent-orange);
        }

        .deep-reading-text p {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.9;
            margin-bottom: 16px;
        }

        .deep-reading-text p strong {
            color: var(--text-warm);
            font-weight: 600;
        }

        .deep-reading-text .read-more-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            font-size: 15px;
            color: var(--primary-black);
            border-bottom: 2px solid var(--accent-orange);
            padding-bottom: 4px;
            transition: all var(--transition);
        }

        .deep-reading-text .read-more-link:hover {
            color: var(--accent-orange-hover);
            gap: 12px;
        }

        .deep-reading-img {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-deep);
        }

        .deep-reading-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        /* ===== 数据统计 ===== */
        .stats-section {
            background: var(--primary-black);
            padding: 64px 0;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
        }

        .stat-item {
            text-align: center;
            padding: 20px;
        }

        .stat-item .stat-number {
            font-family: var(--font-en);
            font-size: 42px;
            font-weight: 800;
            color: var(--accent-orange);
            line-height: 1.15;
        }

        .stat-item .stat-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 8px;
        }

        .stat-item .stat-divider {
            width: 32px;
            height: 2px;
            background: var(--accent-orange);
            margin: 12px auto 0;
            border-radius: 1px;
        }

        /* ===== 底部资源列表 ===== */
        .resource-list-section {
            background: var(--bg-ice);
        }

        .resource-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .resource-list-item {
            display: grid;
            grid-template-columns: 84px 1fr auto;
            gap: 20px;
            align-items: center;
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            transition: all var(--transition);
        }

        .resource-list-item .list-date {
            text-align: center;
            background: var(--primary-black);
            border-radius: var(--radius-xs);
            padding: 8px 6px;
            color: var(--bg-white);
            font-size: 12px;
            font-weight: 600;
            line-height: 1.3;
        }

        .resource-list-item .list-date .day {
            font-family: var(--font-en);
            font-size: 22px;
            font-weight: 800;
            color: var(--accent-orange);
            display: block;
        }

        .resource-list-item .list-content h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--primary-black);
            margin-bottom: 4px;
            line-height: 1.4;
        }

        .resource-list-item .list-content p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 8px;
        }

        .resource-list-item .list-content .list-tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }

        .resource-list-item .list-content .list-tags span {
            font-size: 12px;
            padding: 3px 10px;
            border-radius: 999px;
            border: 1px solid var(--border-light);
            color: var(--text-secondary);
            background: var(--bg-ice);
        }

        .resource-list-item .list-action .btn-sm {
            padding: 8px 18px;
            font-size: 13px;
            border-radius: 8px;
            font-weight: 600;
            background: transparent;
            color: var(--primary-black);
            border: 1.5px solid var(--primary-black);
            transition: all var(--transition);
            white-space: nowrap;
        }

        .resource-list-item .list-action .btn-sm:hover {
            background: var(--primary-black);
            color: var(--bg-white);
        }

        .resource-list-item:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(242, 160, 61, 0.4);
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-white);
        }

        .faq-list {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition);
            background: var(--bg-white);
        }

        .faq-item.active {
            border-left: 4px solid var(--accent-orange);
            background: var(--bg-ice);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            cursor: pointer;
            font-weight: 600;
            font-size: 16px;
            color: var(--text-warm);
            gap: 16px;
            transition: color var(--transition);
            user-select: none;
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: var(--bg-ice);
            border: 1px solid var(--border-light);
            font-size: 18px;
            font-weight: 600;
            transition: all var(--transition);
        }

        .faq-item.active .faq-question {
            color: var(--primary-black);
        }

        .faq-item.active .faq-icon {
            background: var(--accent-orange);
            color: var(--primary-black);
            border-color: var(--accent-orange);
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 24px;
        }

        .faq-item.active .faq-answer {
            max-height: 400px;
            padding: 0 24px 20px;
        }

        .faq-answer p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--bg-ice);
        }

        .cta-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            background: var(--secondary-dark);
            border-radius: var(--radius-lg);
            padding: 48px 48px;
            box-shadow: var(--shadow-deep);
        }

        .cta-info h2 {
            font-size: 28px;
            font-weight: 700;
            line-height: 1.3;
            color: #ffffff;
            margin-bottom: 14px;
        }

        .cta-info h2 span {
            color: var(--accent-orange);
        }

        .cta-info p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.75);
            line-height: 1.8;
            margin-bottom: 24px;
        }

        .cta-contact-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .cta-contact-list .contact-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
        }

        .cta-contact-list .contact-item .ci-indicator {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent-orange);
            flex-shrink: 0;
        }

        .cta-form {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-md);
            padding: 28px;
        }

        .cta-form .form-group {
            margin-bottom: 16px;
        }

        .cta-form label {
            display: block;
            font-size: 14px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 6px;
        }

        .cta-form input,
        .cta-form textarea {
            width: 100%;
            padding: 12px 14px;
            border-radius: 8px;
            border: 1px solid rgba(255, 255, 255, 0.25);
            background: rgba(255, 255, 255, 0.08);
            color: #ffffff;
            font-size: 14px;
            transition: all var(--transition);
        }

        .cta-form input::placeholder,
        .cta-form textarea::placeholder {
            color: rgba(255, 255, 255, 0.45);
        }

        .cta-form input:focus,
        .cta-form textarea:focus {
            border-color: var(--accent-orange);
            box-shadow: 0 0 0 3px rgba(242, 160, 61, 0.25);
            background: rgba(255, 255, 255, 0.12);
        }

        .cta-form textarea {
            min-height: 100px;
            resize: vertical;
        }

        .cta-form .btn-primary {
            width: 100%;
            justify-content: center;
            font-size: 15px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--primary-black);
            padding: 64px 0 0;
            color: #ffffff;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            line-height: 1.8;
            margin-top: 14px;
            max-width: 320px;
        }

        .footer-brand .nav-logo {
            color: #ffffff;
        }

        .footer-brand .nav-logo span {
            color: #ffffff;
        }

        .footer-brand .nav-logo .highlight {
            color: var(--accent-orange);
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: var(--accent-orange);
            margin-bottom: 16px;
            letter-spacing: 0.04em;
        }

        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-col ul li a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            transition: color var(--transition);
            position: relative;
        }

        .footer-col ul li a:hover {
            color: var(--accent-orange);
        }

        .footer-col ul li a::after {
            content: "";
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 1px;
            background: var(--accent-orange);
            transition: width 0.2s ease;
        }

        .footer-col ul li a:hover::after {
            width: 100%;
        }

        .footer-search {
            display: flex;
            gap: 8px;
        }

        .footer-search input {
            flex: 1;
            padding: 10px 14px;
            border-radius: 999px;
            border: 1px solid rgba(255, 255, 255, 0.25);
            background: rgba(255, 255, 255, 0.08);
            color: #ffffff;
            font-size: 13px;
            min-width: 0;
        }

        .footer-search input::placeholder {
            color: rgba(255, 255, 255, 0.45);
        }

        .footer-search input:focus {
            border-color: var(--accent-orange);
            box-shadow: 0 0 0 3px rgba(242, 160, 61, 0.2);
        }

        .footer-search .btn-primary {
            padding: 10px 18px;
            font-size: 13px;
            flex-shrink: 0;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            padding: 20px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.5);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
            transition: color var(--transition);
        }

        .footer-bottom a:hover {
            color: var(--accent-orange);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .nav-links {
                gap: 10px;
                font-size: 13px;
            }

            .nav-search {
                max-width: 320px;
            }

            .resource-hero .container {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .hero-ring-wrap {
                justify-content: center;
            }

            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

            .resources-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

            .deep-reading .container {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }

            .cta-wrap {
                grid-template-columns: 1fr;
                gap: 32px;
                padding: 32px 24px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            .nav-inner {
                padding: 10px 16px;
                gap: 12px;
            }

            .nav-links {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: var(--bg-white);
                flex-direction: column;
                align-items: flex-start;
                padding: 16px 24px;
                gap: 14px;
                border-bottom: 1px solid var(--border-light);
                box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            }

            .nav-links.open {
                display: flex;
            }

            .nav-links a {
                font-size: 15px;
                padding: 4px 0;
            }

            .nav-search {
                display: none;
            }

            .nav-search.mobile-visible {
                display: flex;
                position: absolute;
                top: 100%;
                left: 16px;
                right: 16px;
                max-width: none;
                background: var(--bg-white);
                border: 1px solid var(--border-light);
                border-radius: 999px;
                padding: 12px 18px;
                box-shadow: var(--shadow-card);
            }

            .nav-toggle {
                display: flex;
                margin-left: auto;
            }

            .mobile-search-toggle {
                display: flex;
            }

            .nav-toggle.open span:nth-child(1) {
                transform: translateY(7px) rotate(45deg);
            }

            .nav-toggle.open span:nth-child(2) {
                opacity: 0;
            }

            .nav-toggle.open span:nth-child(3) {
                transform: translateY(-7px) rotate(-45deg);
            }

            section {
                padding: var(--section-padding-mobile) 0;
            }

            .container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .resource-hero {
                padding: 28px 0 48px;
            }

            .resource-hero-text h1 {
                font-size: 28px;
                line-height: 1.3;
            }

            .resource-hero-text .hero-desc {
                font-size: 15px;
            }

            .hero-ring-wrap {
                flex-direction: column;
                gap: 20px;
                padding: 24px 20px;
            }

            .ring-stats {
                flex-direction: row;
                flex-wrap: wrap;
                justify-content: center;
                gap: 16px;
            }

            .ring-stat-item .ring-number {
                font-size: 24px;
            }

            .progress-ring-container {
                width: 110px;
                height: 110px;
            }

            .progress-ring {
                width: 110px;
                height: 110px;
            }

            .ring-center-text .pct {
                font-size: 22px;
            }

            .steps-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }

            .step-card {
                padding: 20px 16px;
            }

            .step-card .step-number {
                font-size: 36px;
                margin-bottom: 10px;
            }

            .resources-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

            .stat-item .stat-number {
                font-size: 32px;
            }

            .resource-list-item {
                grid-template-columns: 64px 1fr;
                gap: 12px;
                padding: 14px 16px;
            }

            .resource-list-item .list-action {
                grid-column: 2;
                justify-self: start;
            }

            .resource-list-item .list-date .day {
                font-size: 18px;
            }

            .cta-wrap {
                padding: 24px 16px;
            }

            .cta-info h2 {
                font-size: 22px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 6px;
            }

            .switcher-dots {
                gap: 8px;
            }

            .switcher-dot {
                padding: 8px 14px;
                font-size: 13px;
            }

            .section-header h2 {
                font-size: 24px;
            }

            .deep-reading-text h2 {
                font-size: 24px;
            }

            .faq-question {
                font-size: 15px;
                padding: 14px 16px;
            }

            .faq-answer {
                padding: 0 16px;
            }

            .faq-item.active .faq-answer {
                padding: 0 16px 16px;
            }
        }

        @media (max-width: 520px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }

            .stat-item .stat-number {
                font-size: 28px;
            }

            .resource-hero-text h1 {
                font-size: 24px;
            }

            .hero-actions {
                flex-direction: column;
            }

            .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }

            .switcher-dot {
                font-size: 12px;
                padding: 6px 12px;
            }

            .resource-list-item {
                grid-template-columns: 1fr;
                text-align: left;
            }

            .resource-list-item .list-date {
                text-align: center;
                max-width: 64px;
            }

            .resource-list-item .list-action {
                grid-column: 1;
                justify-self: start;
            }
        }