/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #D32F2F;
            --primary-dark: #B71C1C;
            --primary-light: #EF5350;
            --accent: #FF8F00;
            --accent-light: #FFB300;
            --dark: #1A1A2E;
            --dark-soft: #2D2D44;
            --bg: #F8F9FA;
            --bg-alt: #FFFFFF;
            --text: #212529;
            --text-soft: #6C757D;
            --text-light: #ADB5BD;
            --border: #E9ECEF;
            --border-light: #F1F3F5;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 8px 24px rgba(0,0,0,0.10);
            --shadow-lg: 0 16px 48px rgba(0,0,0,0.14);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            --max-width: 1200px;
            --header-height: 72px;
        }

        /* ===== 基础 Reset ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
            overflow-x: hidden;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-dark); }
        a:focus-visible { outline: 3px solid var(--primary-light); outline-offset: 2px; border-radius: 4px; }
        button, input, textarea, select { font-family: inherit; font-size: inherit; }
        button { cursor: pointer; border: none; background: none; }
        ul, ol { list-style: none; padding: 0; margin: 0; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--dark); }

        /* ===== 容器 ===== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }
        @media (max-width: 768px) {
            .container { padding: 0 16px; }
        }

        /* ===== 导航 - 分段标签风格 ===== */
        .site-header {
            background: var(--bg-alt);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 1000;
            height: var(--header-height);
            display: flex;
            align-items: center;
            backdrop-filter: blur(12px);
            background: rgba(255,255,255,0.92);
            transition: var(--transition);
        }
        .site-header.scrolled { box-shadow: var(--shadow-sm); }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .logo {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo i { font-size: 1.75rem; color: var(--accent); }
        .logo span { background: linear-gradient(135deg, var(--primary), var(--accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .nav-tabs {
            display: flex;
            align-items: center;
            gap: 6px;
            background: var(--bg);
            padding: 4px;
            border-radius: var(--radius-xl);
            border: 1px solid var(--border);
            flex-wrap: wrap;
        }
        .nav-tabs a {
            padding: 8px 20px;
            border-radius: var(--radius-xl);
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-soft);
            transition: var(--transition);
            white-space: nowrap;
            letter-spacing: 0.3px;
        }
        .nav-tabs a:hover { color: var(--primary); background: rgba(211,47,47,0.06); }
        .nav-tabs a.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(211,47,47,0.3);
        }
        .nav-tabs a.active:hover { background: var(--primary-dark); color: #fff; }
        .header-cta {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-shrink: 0;
        }
        .btn-download {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            padding: 10px 28px;
            border-radius: var(--radius-xl);
            font-weight: 700;
            font-size: 0.9rem;
            letter-spacing: 0.5px;
            transition: var(--transition);
            box-shadow: 0 4px 16px rgba(211,47,47,0.3);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .btn-download:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(211,47,47,0.4); color: #fff; }
        .btn-download:active { transform: translateY(0); }
        .hamburger {
            display: none;
            font-size: 1.5rem;
            color: var(--dark);
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .hamburger:hover { background: var(--bg); }

        /* 移动端导航 */
        .mobile-nav {
            display: none;
            position: fixed;
            top: var(--header-height);
            left: 0;
            right: 0;
            background: var(--bg-alt);
            border-bottom: 1px solid var(--border);
            padding: 16px 24px;
            box-shadow: var(--shadow-md);
            z-index: 999;
            transform: translateY(-10px);
            opacity: 0;
            transition: var(--transition);
            pointer-events: none;
        }
        .mobile-nav.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
        .mobile-nav a {
            display: block;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            color: var(--text);
            transition: var(--transition);
        }
        .mobile-nav a:hover { background: var(--bg); color: var(--primary); }
        .mobile-nav a.active { background: var(--primary); color: #fff; }
        .mobile-nav .btn-download-mobile {
            margin-top: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            padding: 14px;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 1rem;
        }

        @media (max-width: 868px) {
            .nav-tabs, .header-cta .btn-download { display: none; }
            .hamburger { display: block; }
            .header-cta .btn-download { display: none; }
            .mobile-nav { display: block; }
        }
        @media (min-width: 869px) {
            .mobile-nav { display: none !important; }
        }

        /* ===== Hero 首屏 ===== */
        .hero {
            padding: 100px 0 80px;
            background: linear-gradient(160deg, #1A1A2E 0%, #2D2D44 40%, #1A1A2E 100%);
            position: relative;
            overflow: hidden;
            min-height: 600px;
            display: flex;
            align-items: center;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle at 30% 50%, rgba(211,47,47,0.15) 0%, transparent 50%),
                        radial-gradient(circle at 70% 80%, rgba(255,143,0,0.10) 0%, transparent 50%);
            animation: heroGlow 12s ease-in-out infinite alternate;
        }
        @keyframes heroGlow {
            0% { transform: translate(0,0) rotate(0deg); }
            100% { transform: translate(2%,-2%) rotate(3deg); }
        }
        .hero-content { position: relative; z-index: 2; display: flex; align-items: center; gap: 60px; }
        .hero-text { flex: 1; }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255,255,255,0.08);
            border: 1px solid rgba(255,255,255,0.12);
            padding: 6px 18px;
            border-radius: var(--radius-xl);
            font-size: 0.85rem;
            color: var(--accent-light);
            font-weight: 600;
            margin-bottom: 24px;
            backdrop-filter: blur(8px);
        }
        .hero-badge i { font-size: 0.75rem; }
        .hero h1 {
            font-size: 3.5rem;
            font-weight: 900;
            color: #fff;
            line-height: 1.15;
            margin-bottom: 20px;
            letter-spacing: -1px;
        }
        .hero h1 .highlight { background: linear-gradient(135deg, var(--accent-light), #FF6F00); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .hero p {
            font-size: 1.2rem;
            color: rgba(255,255,255,0.7);
            max-width: 540px;
            margin-bottom: 32px;
            line-height: 1.8;
        }
        .hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
        .hero-actions .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            padding: 14px 40px;
            border-radius: var(--radius-xl);
            font-weight: 700;
            font-size: 1.05rem;
            transition: var(--transition);
            box-shadow: 0 6px 24px rgba(211,47,47,0.35);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .hero-actions .btn-primary:hover { transform: translateY(-3px); box-shadow: 0 12px 40px rgba(211,47,47,0.5); color: #fff; }
        .hero-actions .btn-secondary {
            background: rgba(255,255,255,0.08);
            border: 1px solid rgba(255,255,255,0.2);
            color: #fff;
            padding: 14px 36px;
            border-radius: var(--radius-xl);
            font-weight: 600;
            font-size: 1.05rem;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 10px;
            backdrop-filter: blur(8px);
        }
        .hero-actions .btn-secondary:hover { background: rgba(255,255,255,0.16); color: #fff; border-color: rgba(255,255,255,0.3); }
        .hero-visual {
            flex: 0 0 400px;
            position: relative;
        }
        .hero-card-group {
            background: rgba(255,255,255,0.04);
            border: 1px solid rgba(255,255,255,0.08);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            backdrop-filter: blur(12px);
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }
        .hero-stat {
            text-align: center;
            padding: 16px 8px;
            border-radius: var(--radius-sm);
            background: rgba(255,255,255,0.04);
        }
        .hero-stat .num { font-size: 2rem; font-weight: 900; color: var(--accent-light); display: block; }
        .hero-stat .label { font-size: 0.8rem; color: rgba(255,255,255,0.6); margin-top: 4px; }
        .hero-stat.live { grid-column: 1 / -1; background: rgba(211,47,47,0.15); border: 1px solid rgba(211,47,47,0.2); }
        .hero-stat.live .num { color: #fff; font-size: 1.1rem; display: flex; align-items: center; justify-content: center; gap: 8px; }
        .hero-stat.live .num i { color: #4CAF50; font-size: 0.7rem; animation: pulse 1.5s infinite; }
        @keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.3; } }

        @media (max-width: 1024px) {
            .hero { padding: 80px 0 60px; min-height: auto; }
            .hero h1 { font-size: 2.6rem; }
            .hero-content { flex-direction: column; gap: 40px; }
            .hero-visual { flex: 0 0 auto; width: 100%; max-width: 400px; }
        }
        @media (max-width: 640px) {
            .hero { padding: 60px 0 40px; }
            .hero h1 { font-size: 2rem; }
            .hero p { font-size: 1rem; }
            .hero-actions .btn-primary, .hero-actions .btn-secondary { width: 100%; justify-content: center; }
            .hero-card-group { padding: 20px 16px; }
            .hero-stat .num { font-size: 1.5rem; }
        }

        /* ===== 通用板块 ===== */
        .section { padding: 80px 0; }
        .section-alt { background: var(--bg-alt); }
        .section-dark { background: var(--dark); color: rgba(255,255,255,0.85); }
        .section-dark h2, .section-dark h3 { color: #fff; }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header h2 {
            font-size: 2.4rem;
            font-weight: 800;
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }
        .section-header h2 i { color: var(--primary); margin-right: 8px; }
        .section-header p {
            font-size: 1.1rem;
            color: var(--text-soft);
            max-width: 680px;
            margin: 0 auto;
        }
        .section-header.light p { color: rgba(255,255,255,0.65); }
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(211,47,47,0.08);
            color: var(--primary);
            padding: 4px 16px;
            border-radius: var(--radius-xl);
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 0.5px;
            text-transform: uppercase;
            margin-bottom: 12px;
        }
        .section-tag.light { background: rgba(255,255,255,0.1); color: var(--accent-light); }

        @media (max-width: 768px) {
            .section { padding: 56px 0; }
            .section-header h2 { font-size: 1.8rem; }
            .section-header p { font-size: 1rem; }
            .section-header { margin-bottom: 32px; }
        }

        /* ===== 功能卡片 ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .feature-card {
            background: var(--bg-alt);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            transition: var(--transition);
            text-align: center;
        }
        .feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: transparent; }
        .feature-card .icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 18px;
            background: linear-gradient(135deg, rgba(211,47,47,0.08), rgba(255,143,0,0.08));
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--primary);
            transition: var(--transition);
        }
        .feature-card:hover .icon { background: linear-gradient(135deg, var(--primary), var(--accent)); color: #fff; transform: scale(1.05); }
        .feature-card h3 { font-size: 1.15rem; margin-bottom: 8px; }
        .feature-card p { font-size: 0.9rem; color: var(--text-soft); line-height: 1.6; }

        @media (max-width: 1024px) {
            .features-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 540px) {
            .features-grid { grid-template-columns: 1fr; }
        }

        /* ===== 分类入口卡片 ===== */
        .categories-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .category-card {
            background: var(--bg-alt);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 40px 32px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .category-card::after {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 120px;
            height: 120px;
            border-radius: 50%;
            opacity: 0.06;
            transform: translate(30%, -30%);
            transition: var(--transition);
        }
        .category-card:nth-child(1)::after { background: var(--primary); }
        .category-card:nth-child(2)::after { background: var(--accent); }
        .category-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: transparent; }
        .category-card:hover::after { transform: translate(20%, -20%) scale(1.2); opacity: 0.1; }
        .category-card .cat-icon {
            font-size: 2rem;
            margin-bottom: 16px;
            color: var(--primary);
        }
        .category-card:nth-child(2) .cat-icon { color: var(--accent); }
        .category-card h3 { font-size: 1.5rem; margin-bottom: 8px; }
        .category-card p { color: var(--text-soft); font-size: 0.95rem; margin-bottom: 20px; line-height: 1.7; }
        .category-card .cat-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            color: var(--primary);
            transition: var(--transition);
        }
        .category-card:nth-child(2) .cat-link { color: var(--accent); }
        .category-card .cat-link:hover { gap: 14px; }
        .category-card .cat-link i { font-size: 0.8rem; }

        @media (max-width: 768px) {
            .categories-grid { grid-template-columns: 1fr; gap: 20px; }
            .category-card { padding: 28px 20px; }
            .category-card h3 { font-size: 1.25rem; }
        }

        /* ===== 资讯列表 ===== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .news-card {
            background: var(--bg-alt);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 24px 28px;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .news-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: transparent; }
        .news-card .news-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--text-light);
            margin-bottom: 10px;
        }
        .news-card .news-meta .cat-badge {
            background: rgba(211,47,47,0.08);
            color: var(--primary);
            padding: 2px 12px;
            border-radius: var(--radius-xl);
            font-weight: 700;
            font-size: 0.7rem;
            letter-spacing: 0.3px;
        }
        .news-card .news-meta time { font-size: 0.75rem; }
        .news-card h3 {
            font-size: 1.05rem;
            margin-bottom: 8px;
            line-height: 1.4;
            color: var(--dark);
            transition: var(--transition);
        }
        .news-card:hover h3 { color: var(--primary); }
        .news-card p {
            font-size: 0.9rem;
            color: var(--text-soft);
            line-height: 1.6;
            margin-bottom: 12px;
            flex: 1;
        }
        .news-card .news-readmore {
            font-weight: 600;
            font-size: 0.85rem;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
            margin-top: auto;
        }
        .news-card .news-readmore i { font-size: 0.7rem; transition: var(--transition); }
        .news-card:hover .news-readmore { gap: 10px; }
        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 48px 20px;
            color: var(--text-soft);
            background: var(--bg-alt);
            border-radius: var(--radius-md);
            border: 1px dashed var(--border);
        }
        .news-empty i { font-size: 2rem; color: var(--text-light); margin-bottom: 12px; display: block; }

        @media (max-width: 768px) {
            .news-grid { grid-template-columns: 1fr; }
            .news-card { padding: 20px; }
        }

        /* ===== 统计数字 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-item {
            text-align: center;
            padding: 32px 16px;
            background: rgba(255,255,255,0.04);
            border: 1px solid rgba(255,255,255,0.08);
            border-radius: var(--radius-md);
            transition: var(--transition);
        }
        .stat-item:hover { background: rgba(255,255,255,0.08); transform: translateY(-2px); }
        .stat-item .num {
            font-size: 2.6rem;
            font-weight: 900;
            background: linear-gradient(135deg, var(--accent-light), #FF6F00);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            display: block;
            line-height: 1.2;
        }
        .stat-item .label { font-size: 0.9rem; color: rgba(255,255,255,0.6); margin-top: 6px; }
        .stat-item .label i { margin-right: 4px; }

        @media (max-width: 768px) {
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
            .stat-item .num { font-size: 2rem; }
        }
        @media (max-width: 400px) {
            .stats-grid { grid-template-columns: 1fr 1fr; }
        }

        /* ===== 流程 ===== */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
            counter-reset: step;
        }
        .process-steps::before {
            content: '';
            position: absolute;
            top: 40px;
            left: 10%;
            right: 10%;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent), var(--primary));
            border-radius: 2px;
            opacity: 0.2;
        }
        .step {
            text-align: center;
            position: relative;
            z-index: 2;
            counter-increment: step;
        }
        .step .step-num {
            width: 80px;
            height: 80px;
            margin: 0 auto 18px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            font-weight: 900;
            color: #fff;
            box-shadow: 0 8px 24px rgba(211,47,47,0.25);
            transition: var(--transition);
            position: relative;
        }
        .step:hover .step-num { transform: scale(1.06); box-shadow: 0 12px 36px rgba(211,47,47,0.35); }
        .step .step-num::after {
            content: counter(step);
        }
        .step h4 { font-size: 1.1rem; margin-bottom: 6px; color: var(--dark); }
        .step p { font-size: 0.85rem; color: var(--text-soft); line-height: 1.6; }

        @media (max-width: 868px) {
            .process-steps { grid-template-columns: repeat(2, 1fr); gap: 28px; }
            .process-steps::before { display: none; }
            .step .step-num { width: 64px; height: 64px; font-size: 1.4rem; }
        }
        @media (max-width: 480px) {
            .process-steps { grid-template-columns: 1fr; gap: 24px; }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-alt);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--primary-light); }
        .faq-question {
            padding: 20px 24px;
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--dark);
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            transition: var(--transition);
            user-select: none;
        }
        .faq-question:hover { color: var(--primary); }
        .faq-question i { font-size: 0.85rem; color: var(--text-light); transition: var(--transition); }
        .faq-item.open .faq-question i { transform: rotate(180deg); color: var(--primary); }
        .faq-answer {
            padding: 0 24px 20px;
            font-size: 0.95rem;
            color: var(--text-soft);
            line-height: 1.8;
            display: none;
        }
        .faq-item.open .faq-answer { display: block; }

        /* ===== CTA 区块 ===== */
        .cta-block {
            background: linear-gradient(160deg, var(--dark), var(--dark-soft));
            border-radius: var(--radius-lg);
            padding: 64px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-block::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle at 60% 40%, rgba(211,47,47,0.12) 0%, transparent 50%),
                        radial-gradient(circle at 30% 80%, rgba(255,143,0,0.08) 0%, transparent 50%);
            animation: heroGlow 16s ease-in-out infinite alternate;
        }
        .cta-block * { position: relative; z-index: 2; }
        .cta-block h2 { font-size: 2.2rem; color: #fff; margin-bottom: 12px; }
        .cta-block p { font-size: 1.1rem; color: rgba(255,255,255,0.65); max-width: 600px; margin: 0 auto 28px; }
        .cta-block .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            padding: 16px 44px;
            border-radius: var(--radius-xl);
            font-weight: 700;
            font-size: 1.1rem;
            transition: var(--transition);
            box-shadow: 0 8px 32px rgba(211,47,47,0.35);
        }
        .cta-block .btn-cta:hover { transform: translateY(-3px); box-shadow: 0 14px 48px rgba(211,47,47,0.5); color: #fff; }
        .cta-block .btn-cta i { font-size: 1rem; }

        @media (max-width: 768px) {
            .cta-block { padding: 40px 24px; }
            .cta-block h2 { font-size: 1.6rem; }
            .cta-block p { font-size: 0.95rem; }
            .cta-block .btn-cta { width: 100%; justify-content: center; }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--dark);
            padding: 48px 0 32px;
            border-top: 1px solid rgba(255,255,255,0.06);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand .logo { margin-bottom: 12px; }
        .footer-brand p { font-size: 0.9rem; color: rgba(255,255,255,0.5); max-width: 320px; line-height: 1.7; }
        .footer-col h4 { font-size: 0.9rem; color: #fff; font-weight: 700; margin-bottom: 16px; letter-spacing: 0.5px; text-transform: uppercase; }
        .footer-col a {
            display: block;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.5);
            padding: 4px 0;
            transition: var(--transition);
        }
        .footer-col a:hover { color: var(--accent-light); padding-left: 4px; }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.06);
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.8rem;
            color: rgba(255,255,255,0.35);
        }
        .footer-bottom a { color: rgba(255,255,255,0.4); }
        .footer-bottom a:hover { color: var(--accent-light); }

        @media (max-width: 868px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
            .footer-brand { grid-column: 1 / -1; }
        }
        @media (max-width: 520px) {
            .footer-grid { grid-template-columns: 1fr; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }

        /* ===== 分割线 ===== */
        .divider {
            width: 60px;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            border-radius: 2px;
            margin: 16px auto 0;
        }
        .divider.left { margin: 16px 0; }

        /* ===== 回到顶部 ===== */
        .back-top {
            position: fixed;
            bottom: 32px;
            right: 32px;
            width: 48px;
            height: 48px;
            background: var(--primary);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            box-shadow: var(--shadow-md);
            z-index: 100;
            transition: var(--transition);
            opacity: 0;
            pointer-events: none;
            transform: translateY(20px);
        }
        .back-top.visible { opacity: 1; pointer-events: auto; transform: translateY(0); }
        .back-top:hover { background: var(--primary-dark); transform: translateY(-4px); box-shadow: var(--shadow-lg); color: #fff; }

        /* ===== 辅助 ===== */
        .text-center { text-align: center; }
        .mt-16 { margin-top: 16px; }
        .mb-16 { margin-bottom: 16px; }
        .gap-8 { gap: 8px; }

        /* Foundation 覆盖 */
        .row { max-width: var(--max-width); margin: 0 auto; }
        .columns, .column { padding-left: 12px; padding-right: 12px; }
        .button { font-family: var(--font); border-radius: var(--radius-md); transition: var(--transition); }
        .button:hover { transform: translateY(-1px); }

        /* 响应式微调 */
        @media (max-width: 1024px) {
            :root { --header-height: 64px; }
        }
        @media (max-width: 640px) {
            :root { --header-height: 60px; }
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #e53935;
            --primary-dark: #b71c1c;
            --primary-light: #ffcdd2;
            --accent: #ff6f00;
            --accent-light: #ffe0b2;
            --bg-dark: #0f0f1a;
            --bg-card: #1a1a2e;
            --bg-section: #16213e;
            --bg-light: #f8f9fa;
            --text-primary: #ffffff;
            --text-secondary: #b0b0c8;
            --text-body: #e0e0f0;
            --text-muted: #8888aa;
            --border-color: rgba(255, 255, 255, 0.08);
            --border-light: rgba(255, 255, 255, 0.15);
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
            --shadow-sm: 0 4px 16px rgba(0, 0, 0, 0.25);
            --shadow-hover: 0 16px 48px rgba(229, 57, 53, 0.2);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            --container-max: 1200px;
            --header-height: 72px;
        }

        /* ===== 基础 Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }
        body {
            font-family: var(--font-sans);
            background: var(--bg-dark);
            color: var(--text-body);
            line-height: 1.75;
            font-size: 16px;
            overflow-x: hidden;
        }
        a {
            color: var(--accent);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        ul,
        ol {
            list-style: none;
        }

        /* ===== 容器 ===== */
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media screen and (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== 头部导航 ===== */
        .site-header {
            background: rgba(15, 15, 26, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 1000;
            height: var(--header-height);
            display: flex;
            align-items: center;
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.5px;
            transition: opacity var(--transition);
        }
        .logo i {
            color: var(--primary);
            font-size: 26px;
            filter: drop-shadow(0 0 8px rgba(229, 57, 53, 0.5));
        }
        .logo span {
            background: linear-gradient(135deg, #fff, #ff8a80);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .logo:hover {
            opacity: 0.85;
        }

        .nav-tabs {
            display: flex;
            align-items: center;
            gap: 4px;
            background: rgba(255, 255, 255, 0.04);
            padding: 4px;
            border-radius: 50px;
            border: 1px solid var(--border-color);
        }
        .nav-tabs a {
            padding: 8px 22px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-secondary);
            transition: all var(--transition);
            position: relative;
            white-space: nowrap;
        }
        .nav-tabs a:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.06);
        }
        .nav-tabs a.active {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            box-shadow: 0 4px 20px rgba(229, 57, 53, 0.35);
        }
        .nav-tabs a.active::after {
            display: none;
        }

        .header-cta {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .header-cta .btn-download {
            background: linear-gradient(135deg, var(--accent), var(--primary));
            color: #fff;
            border: none;
            padding: 10px 24px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 14px;
            cursor: pointer;
            transition: all var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 4px 20px rgba(229, 57, 53, 0.3);
        }
        .header-cta .btn-download:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(229, 57, 53, 0.45);
        }
        .header-cta .btn-download i {
            font-size: 16px;
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 24px;
            cursor: pointer;
            padding: 4px 8px;
        }

        @media screen and (max-width: 1024px) {
            .nav-tabs a {
                padding: 6px 14px;
                font-size: 13px;
            }
            .header-cta .btn-download {
                padding: 8px 16px;
                font-size: 13px;
            }
        }
        @media screen and (max-width: 768px) {
            .site-header .container {
                flex-wrap: nowrap;
            }
            .mobile-toggle {
                display: block;
                order: 3;
            }
            .nav-tabs {
                display: none;
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(15, 15, 26, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 16px;
                border-radius: 0 0 20px 20px;
                border: 1px solid var(--border-color);
                border-top: none;
                gap: 6px;
                z-index: 999;
            }
            .nav-tabs.open {
                display: flex;
            }
            .nav-tabs a {
                width: 100%;
                text-align: center;
                padding: 12px 16px;
                font-size: 15px;
            }
            .header-cta .btn-download span {
                display: none;
            }
            .header-cta .btn-download i {
                margin: 0;
            }
        }
        @media screen and (max-width: 520px) {
            .logo {
                font-size: 18px;
            }
            .logo i {
                font-size: 20px;
            }
            .header-cta .btn-download {
                padding: 8px 12px;
                font-size: 12px;
            }
        }

        /* ===== 文章页主体 ===== */
        .article-hero {
            padding: 60px 0 40px;
            background: linear-gradient(180deg, rgba(229, 57, 53, 0.08) 0%, transparent 100%);
            border-bottom: 1px solid var(--border-color);
        }
        .article-hero .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 24px;
            flex-wrap: wrap;
        }
        .article-hero .breadcrumb a {
            color: var(--text-secondary);
        }
        .article-hero .breadcrumb a:hover {
            color: var(--accent);
        }
        .article-hero .breadcrumb .sep {
            color: var(--text-muted);
        }
        .article-hero .breadcrumb .current {
            color: var(--text-primary);
            font-weight: 500;
        }
        .article-hero h1 {
            font-size: 36px;
            font-weight: 800;
            color: var(--text-primary);
            line-height: 1.3;
            letter-spacing: -0.5px;
            max-width: 900px;
            margin-bottom: 16px;
        }
        .article-hero .meta {
            display: flex;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
            color: var(--text-secondary);
            font-size: 14px;
        }
        .article-hero .meta .tag {
            display: inline-block;
            background: rgba(229, 57, 53, 0.15);
            color: var(--primary);
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 12px;
            font-weight: 600;
        }
        .article-hero .meta i {
            margin-right: 4px;
            opacity: 0.7;
        }

        .article-body {
            padding: 48px 0 60px;
        }
        .article-body .content {
            max-width: 820px;
            margin: 0 auto;
            font-size: 17px;
            line-height: 1.9;
            color: var(--text-body);
        }
        .article-body .content p {
            margin-bottom: 20px;
        }
        .article-body .content h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-primary);
            margin: 40px 0 16px;
            letter-spacing: -0.3px;
        }
        .article-body .content h3 {
            font-size: 21px;
            font-weight: 600;
            color: var(--text-primary);
            margin: 32px 0 12px;
        }
        .article-body .content ul,
        .article-body .content ol {
            margin: 16px 0 20px;
            padding-left: 24px;
        }
        .article-body .content li {
            margin-bottom: 8px;
            position: relative;
        }
        .article-body .content ul li::before {
            content: '•';
            color: var(--primary);
            font-weight: 700;
            display: inline-block;
            width: 16px;
            margin-left: -16px;
        }
        .article-body .content ol li {
            list-style: decimal;
            margin-left: 4px;
        }
        .article-body .content a {
            color: var(--accent);
            text-decoration: underline;
            text-underline-offset: 2px;
        }
        .article-body .content a:hover {
            color: var(--primary);
        }
        .article-body .content blockquote {
            border-left: 4px solid var(--primary);
            background: rgba(229, 57, 53, 0.06);
            padding: 16px 24px;
            margin: 24px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
            font-style: italic;
        }
        .article-body .content img {
            border-radius: var(--radius);
            margin: 24px 0;
            box-shadow: var(--shadow-sm);
        }
        .article-body .content .highlight-box {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            padding: 24px 28px;
            margin: 24px 0;
        }
        .article-body .content .highlight-box strong {
            color: var(--accent);
        }

        .article-footer-nav {
            max-width: 820px;
            margin: 0 auto;
            padding-top: 40px;
            border-top: 1px solid var(--border-color);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
        }
        .article-footer-nav .back-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--text-secondary);
            font-weight: 500;
            transition: color var(--transition);
        }
        .article-footer-nav .back-link:hover {
            color: var(--accent);
        }
        .article-footer-nav .share-links {
            display: flex;
            align-items: center;
            gap: 12px;
            color: var(--text-muted);
            font-size: 14px;
        }
        .article-footer-nav .share-links a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-secondary);
            transition: all var(--transition);
            font-size: 16px;
        }
        .article-footer-nav .share-links a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        .not-found-box {
            text-align: center;
            padding: 80px 24px;
            max-width: 600px;
            margin: 0 auto;
        }
        .not-found-box i {
            font-size: 64px;
            color: var(--text-muted);
            margin-bottom: 24px;
            display: block;
        }
        .not-found-box h2 {
            font-size: 28px;
            color: var(--text-primary);
            margin-bottom: 12px;
        }
        .not-found-box p {
            color: var(--text-secondary);
            margin-bottom: 24px;
        }
        .not-found-box .btn-home {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            padding: 12px 32px;
            border-radius: 50px;
            font-weight: 600;
            transition: all var(--transition);
            box-shadow: 0 4px 20px rgba(229, 57, 53, 0.3);
        }
        .not-found-box .btn-home:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(229, 57, 53, 0.45);
            color: #fff;
        }

        @media screen and (max-width: 768px) {
            .article-hero {
                padding: 40px 0 28px;
            }
            .article-hero h1 {
                font-size: 26px;
            }
            .article-body .content {
                font-size: 16px;
            }
            .article-body .content h2 {
                font-size: 22px;
            }
            .article-body .content h3 {
                font-size: 18px;
            }
            .article-footer-nav {
                flex-direction: column;
                align-items: flex-start;
            }
        }
        @media screen and (max-width: 520px) {
            .article-hero h1 {
                font-size: 22px;
            }
            .article-hero .meta {
                font-size: 13px;
                gap: 12px;
            }
            .article-body {
                padding: 28px 0 40px;
            }
            .article-body .content {
                font-size: 15px;
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-card);
            border-top: 1px solid var(--border-color);
            padding: 56px 0 32px;
            margin-top: 20px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo {
            font-size: 20px;
            margin-bottom: 12px;
            display: inline-flex;
        }
        .footer-brand p {
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.7;
            margin-top: 8px;
            max-width: 360px;
        }
        .footer-col h4 {
            color: var(--text-primary);
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .footer-col a {
            display: block;
            color: var(--text-secondary);
            font-size: 14px;
            padding: 4px 0;
            transition: color var(--transition);
        }
        .footer-col a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-secondary);
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }

        @media screen and (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media screen and (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-brand p {
                max-width: 100%;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== 通用组件 ===== */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            border: none;
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 15px;
            cursor: pointer;
            transition: all var(--transition);
            box-shadow: 0 4px 20px rgba(229, 57, 53, 0.3);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(229, 57, 53, 0.45);
            color: #fff;
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-primary);
            border: 1px solid var(--border-light);
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 15px;
            cursor: pointer;
            transition: all var(--transition);
        }
        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: var(--text-secondary);
            color: var(--text-primary);
            transform: translateY(-1px);
        }

        .text-center {
            text-align: center;
        }
        .mb-1 {
            margin-bottom: 8px;
        }
        .mb-2 {
            margin-bottom: 16px;
        }
        .mb-3 {
            margin-bottom: 24px;
        }
        .mb-4 {
            margin-bottom: 32px;
        }
        .mt-2 {
            margin-top: 16px;
        }
        .mt-3 {
            margin-top: 24px;
        }
        .mt-4 {
            margin-top: 32px;
        }

        @media screen and (max-width: 768px) {
            .btn-primary,
            .btn-secondary {
                padding: 10px 22px;
                font-size: 14px;
            }
        }

        /* ===== Foundation 覆盖 ===== */
        .grid-container {
            max-width: var(--container-max) !important;
            padding-left: 24px !important;
            padding-right: 24px !important;
        }
        @media screen and (max-width: 768px) {
            .grid-container {
                padding-left: 16px !important;
                padding-right: 16px !important;
            }
        }
        .cell {
            margin-bottom: 0 !important;
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b6b;
            --secondary: #1d3557;
            --secondary-light: #457b9d;
            --accent: #f4a261;
            --accent-light: #ffd166;
            --bg-body: #0b0f1a;
            --bg-card: #151e2c;
            --bg-card-hover: #1c2838;
            --bg-section-alt: #111827;
            --text-primary: #f1f5f9;
            --text-secondary: #94a3b8;
            --text-muted: #64748b;
            --border-color: #2a3a4e;
            --border-light: #3d4f65;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.25);
            --shadow-md: 0 6px 24px rgba(0, 0, 0, 0.35);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.45);
            --shadow-glow: 0 0 30px rgba(230, 57, 70, 0.15);
            --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --container-max: 1200px;
            --header-h: 72px;
        }

        /* ===== 基础 Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-sans);
            background: var(--bg-body);
            color: var(--text-primary);
            line-height: 1.65;
            font-size: 16px;
            min-height: 100vh;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary);
        }
        a:focus-visible {
            outline: 2px solid var(--primary-light);
            outline-offset: 4px;
            border-radius: 4px;
        }
        button,
        .button {
            font-family: var(--font-sans);
            cursor: pointer;
            transition: var(--transition);
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.25;
            color: var(--text-primary);
            letter-spacing: -0.01em;
        }
        /* 覆盖 Foundation 默认链接颜色 */
        a:not(.button):not(.nav-link):not(.footer-col a) {
            color: var(--primary-light);
        }

        /* ===== 容器 ===== */
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }
        @media screen and (max-width: 640px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== 导航 (分段标签导航) ===== */
        .site-header {
            background: rgba(11, 15, 26, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 1000;
            height: var(--header-h);
            display: flex;
            align-items: center;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: nowrap;
            gap: 16px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: var(--text-primary);
            white-space: nowrap;
            flex-shrink: 0;
            transition: var(--transition);
        }
        .logo i {
            color: var(--primary);
            font-size: 26px;
            filter: drop-shadow(0 0 10px rgba(230, 57, 70, 0.4));
        }
        .logo span {
            background: linear-gradient(135deg, var(--primary-light), var(--accent-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .logo:hover {
            opacity: 0.85;
            transform: scale(1.02);
        }

        .nav-tabs {
            display: flex;
            align-items: center;
            gap: 6px;
            background: var(--bg-card);
            padding: 4px 6px;
            border-radius: var(--radius-xl);
            border: 1px solid var(--border-color);
            flex-wrap: nowrap;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }
        .nav-tabs::-webkit-scrollbar {
            display: none;
        }
        .nav-tabs a {
            padding: 8px 20px;
            border-radius: 40px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-secondary);
            white-space: nowrap;
            transition: var(--transition);
            background: transparent;
            border: none;
            text-decoration: none;
            display: inline-block;
        }
        .nav-tabs a:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.06);
        }
        .nav-tabs a.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 16px rgba(230, 57, 70, 0.4);
        }
        .nav-tabs a.active:hover {
            background: var(--primary-dark);
            box-shadow: 0 6px 24px rgba(230, 57, 70, 0.55);
        }

        .header-cta {
            flex-shrink: 0;
        }
        .header-cta .button {
            background: var(--primary);
            color: #fff;
            border-radius: 40px;
            padding: 10px 28px;
            font-weight: 700;
            font-size: 14px;
            border: none;
            box-shadow: 0 4px 16px rgba(230, 57, 70, 0.3);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            text-decoration: none;
        }
        .header-cta .button:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(230, 57, 70, 0.45);
        }
        .header-cta .button i {
            font-size: 16px;
        }

        /* 移动端导航适配 */
        @media screen and (max-width: 768px) {
            .site-header {
                height: auto;
                padding: 12px 0;
            }
            .site-header .container {
                flex-wrap: wrap;
                gap: 10px;
            }
            .logo {
                font-size: 18px;
            }
            .logo i {
                font-size: 22px;
            }
            .nav-tabs {
                width: 100%;
                justify-content: flex-start;
                padding: 3px 4px;
                border-radius: var(--radius-lg);
                gap: 4px;
                overflow-x: auto;
            }
            .nav-tabs a {
                padding: 6px 14px;
                font-size: 12px;
                flex-shrink: 0;
            }
            .header-cta {
                display: none;
            }
        }
        @media screen and (max-width: 480px) {
            .nav-tabs a {
                padding: 5px 12px;
                font-size: 11px;
            }
            .logo {
                font-size: 16px;
            }
        }

        /* ===== 页面头部 (分类 Hero) ===== */
        .category-hero {
            padding: 60px 0 50px;
            background: linear-gradient(135deg, var(--bg-body) 0%, var(--bg-section-alt) 60%, #0f1a2a 100%);
            border-bottom: 1px solid var(--border-color);
            position: relative;
            overflow: hidden;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            top: -40%;
            right: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(230, 57, 70, 0.08) 0%, transparent 70%);
            pointer-events: none;
            border-radius: 50%;
        }
        .category-hero .container {
            position: relative;
            z-index: 1;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .category-hero h1 {
            font-size: 42px;
            font-weight: 800;
            letter-spacing: -0.02em;
            background: linear-gradient(135deg, var(--text-primary) 40%, var(--primary-light) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
        }
        .category-hero p {
            font-size: 18px;
            color: var(--text-secondary);
            max-width: 680px;
            line-height: 1.7;
        }
        .category-hero .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            margin-top: 8px;
        }
        .category-hero .hero-meta span {
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--text-muted);
            font-size: 14px;
            font-weight: 500;
        }
        .category-hero .hero-meta i {
            color: var(--primary);
            font-size: 16px;
        }

        @media screen and (max-width: 768px) {
            .category-hero {
                padding: 44px 0 36px;
            }
            .category-hero h1 {
                font-size: 28px;
            }
            .category-hero p {
                font-size: 15px;
            }
            .category-hero .hero-meta {
                gap: 16px;
            }
        }
        @media screen and (max-width: 480px) {
            .category-hero h1 {
                font-size: 22px;
            }
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 64px 0;
        }
        .section-alt {
            background: var(--bg-section-alt);
        }
        .section-title {
            font-size: 30px;
            font-weight: 800;
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            margin-bottom: 40px;
            max-width: 600px;
        }
        .section-header {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 32px;
        }
        .section-header .section-title {
            margin-bottom: 4px;
        }

        @media screen and (max-width: 768px) {
            .section {
                padding: 44px 0;
            }
            .section-title {
                font-size: 24px;
            }
            .section-subtitle {
                font-size: 14px;
                margin-bottom: 28px;
            }
        }

        /* ===== 卡片网格 (Foundation 覆盖) ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .card-grid .card-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .card-grid .card-item:hover {
            border-color: var(--primary);
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg), var(--shadow-glow);
            background: var(--bg-card-hover);
        }
        .card-grid .card-img {
            aspect-ratio: 16 / 9;
            background: var(--border-color);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            font-size: 14px;
            position: relative;
            overflow: hidden;
            background-size: cover;
            background-position: center;
        }
        .card-grid .card-img .card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--primary);
            color: #fff;
            font-size: 11px;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 40px;
            letter-spacing: 0.3px;
            box-shadow: 0 2px 12px rgba(230, 57, 70, 0.4);
        }
        .card-grid .card-img .card-duration {
            position: absolute;
            bottom: 12px;
            right: 12px;
            background: rgba(0, 0, 0, 0.75);
            backdrop-filter: blur(4px);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 6px;
        }
        .card-grid .card-body {
            padding: 20px 20px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .card-grid .card-body h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.35;
        }
        .card-grid .card-body h3 a {
            color: inherit;
            text-decoration: none;
        }
        .card-grid .card-body h3 a:hover {
            color: var(--primary-light);
        }
        .card-grid .card-body p {
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.6;
            flex: 1;
        }
        .card-grid .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 13px;
            color: var(--text-muted);
            border-top: 1px solid var(--border-color);
            padding-top: 14px;
            margin-top: auto;
        }
        .card-grid .card-meta i {
            margin-right: 4px;
            font-size: 14px;
        }
        .card-grid .card-meta span {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        @media screen and (max-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }
        @media screen and (max-width: 640px) {
            .card-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .card-grid .card-body h3 {
                font-size: 16px;
            }
            .card-grid .card-body {
                padding: 16px;
            }
        }

        /* ===== 特色文章 (图文交错) ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
            align-items: stretch;
        }
        .feature-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .feature-card:hover {
            border-color: var(--secondary-light);
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .feature-card .feature-img {
            aspect-ratio: 21 / 9;
            background: var(--border-color);
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .feature-card .feature-img .live-tag {
            position: absolute;
            top: 16px;
            left: 16px;
            background: var(--primary);
            color: #fff;
            font-size: 12px;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 40px;
            display: flex;
            align-items: center;
            gap: 6px;
            box-shadow: 0 2px 16px rgba(230, 57, 70, 0.5);
            animation: pulse-tag 2s infinite;
        }
        @keyframes pulse-tag {
            0%,
            100% {
                box-shadow: 0 2px 16px rgba(230, 57, 70, 0.3);
            }
            50% {
                box-shadow: 0 2px 28px rgba(230, 57, 70, 0.65);
            }
        }
        .feature-card .feature-img .live-tag i {
            font-size: 10px;
        }
        .feature-card .feature-body {
            padding: 24px 24px 28px;
            display: flex;
            flex-direction: column;
            gap: 12px;
            flex: 1;
        }
        .feature-card .feature-body h3 {
            font-size: 20px;
            font-weight: 700;
        }
        .feature-card .feature-body h3 a {
            color: var(--text-primary);
        }
        .feature-card .feature-body h3 a:hover {
            color: var(--primary-light);
        }
        .feature-card .feature-body p {
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.7;
            flex: 1;
        }
        .feature-card .feature-meta {
            display: flex;
            align-items: center;
            gap: 20px;
            font-size: 13px;
            color: var(--text-muted);
            border-top: 1px solid var(--border-color);
            padding-top: 16px;
        }
        .feature-card .feature-meta span {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        @media screen and (max-width: 768px) {
            .feature-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .feature-card .feature-body {
                padding: 18px;
            }
            .feature-card .feature-body h3 {
                font-size: 18px;
            }
        }

        /* ===== 排行榜 / 数据板块 ===== */
        .rank-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .rank-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--bg-card);
            padding: 16px 20px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .rank-item:hover {
            border-color: var(--primary);
            background: var(--bg-card-hover);
            transform: translateX(4px);
            box-shadow: var(--shadow-sm);
        }
        .rank-num {
            font-size: 22px;
            font-weight: 800;
            color: var(--primary);
            min-width: 36px;
            text-align: center;
            font-feature-settings: "tnum";
        }
        .rank-num.gold {
            color: #f4a261;
        }
        .rank-num.silver {
            color: #94a3b8;
        }
        .rank-num.bronze {
            color: #cd7f32;
        }
        .rank-info {
            flex: 1;
        }
        .rank-info h4 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 2px;
        }
        .rank-info p {
            font-size: 13px;
            color: var(--text-muted);
        }
        .rank-stat {
            font-size: 14px;
            font-weight: 700;
            color: var(--accent);
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .rank-stat i {
            font-size: 16px;
        }

        /* ===== 标签 / 分类筛选 ===== */
        .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 32px;
        }
        .tag {
            padding: 6px 18px;
            border-radius: 40px;
            font-size: 13px;
            font-weight: 600;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            color: var(--text-secondary);
            transition: var(--transition);
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            text-decoration: none;
        }
        .tag:hover {
            border-color: var(--primary);
            color: var(--text-primary);
            background: rgba(230, 57, 70, 0.08);
        }
        .tag.active {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            box-shadow: 0 2px 12px rgba(230, 57, 70, 0.3);
        }
        .tag i {
            font-size: 12px;
        }

        /* ===== CTA 区块 ===== */
        .cta-block {
            background: linear-gradient(135deg, var(--secondary) 0%, #0f1a2a 100%);
            border-radius: var(--radius-lg);
            padding: 56px 48px;
            text-align: center;
            border: 1px solid var(--border-color);
            position: relative;
            overflow: hidden;
        }
        .cta-block::before {
            content: '';
            position: absolute;
            top: -30%;
            left: -10%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(230, 57, 70, 0.1) 0%, transparent 70%);
            pointer-events: none;
            border-radius: 50%;
        }
        .cta-block h2 {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 12px;
            position: relative;
        }
        .cta-block p {
            color: var(--text-secondary);
            font-size: 17px;
            max-width: 540px;
            margin: 0 auto 28px;
            position: relative;
        }
        .cta-block .button-group {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
            position: relative;
        }
        .cta-block .button {
            padding: 14px 36px;
            border-radius: 40px;
            font-weight: 700;
            font-size: 16px;
            border: none;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
        }
        .cta-block .button-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 20px rgba(230, 57, 70, 0.35);
        }
        .cta-block .button-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-3px);
            box-shadow: 0 8px 32px rgba(230, 57, 70, 0.5);
        }
        .cta-block .button-outline {
            background: transparent;
            color: var(--text-primary);
            border: 2px solid var(--border-light);
        }
        .cta-block .button-outline:hover {
            border-color: var(--primary);
            background: rgba(230, 57, 70, 0.08);
            transform: translateY(-3px);
        }

        @media screen and (max-width: 768px) {
            .cta-block {
                padding: 36px 24px;
            }
            .cta-block h2 {
                font-size: 24px;
            }
            .cta-block p {
                font-size: 15px;
            }
            .cta-block .button {
                padding: 12px 28px;
                font-size: 14px;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 780px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            padding: 20px 24px;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--secondary-light);
        }
        .faq-item .faq-q {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            gap: 12px;
            cursor: pointer;
        }
        .faq-item .faq-q i {
            color: var(--primary);
            font-size: 18px;
            width: 24px;
            text-align: center;
        }
        .faq-item .faq-a {
            margin-top: 12px;
            padding-left: 36px;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.7;
        }

        /* ===== 实时状态条 ===== */
        .live-bar {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 16px 24px;
            border: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px 32px;
            margin-bottom: 32px;
        }
        .live-bar .live-dot {
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            font-size: 14px;
            color: var(--primary);
        }
        .live-bar .live-dot i {
            font-size: 12px;
            animation: pulse-dot 1.5s infinite;
        }
        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.4;
                transform: scale(0.8);
            }
        }
        .live-bar .live-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-secondary);
        }
        .live-bar .live-item strong {
            color: var(--text-primary);
            font-weight: 600;
        }
        .live-bar .live-item .score {
            color: var(--accent);
            font-weight: 700;
            font-feature-settings: "tnum";
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-section-alt);
            border-top: 1px solid var(--border-color);
            padding: 56px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }
        .footer-brand .logo {
            font-size: 20px;
            margin-bottom: 12px;
            display: inline-flex;
        }
        .footer-brand p {
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .footer-col a {
            display: block;
            color: var(--text-secondary);
            font-size: 14px;
            padding: 5px 0;
            transition: var(--transition);
            text-decoration: none;
        }
        .footer-col a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 12px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-muted);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .footer-bottom a:hover {
            color: var(--primary-light);
        }

        @media screen and (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }
        @media screen and (max-width: 480px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: center;
                text-align: center;
            }
        }

        /* ===== 分页 ===== */
        .pagination-wrapper {
            display: flex;
            justify-content: center;
            margin-top: 40px;
        }
        .pagination {
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
        }
        .pagination a,
        .pagination span {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 40px;
            height: 40px;
            padding: 0 12px;
            border-radius: var(--radius-sm);
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            color: var(--text-secondary);
            font-size: 14px;
            font-weight: 600;
            transition: var(--transition);
            text-decoration: none;
        }
        .pagination a:hover {
            border-color: var(--primary);
            color: var(--text-primary);
            background: rgba(230, 57, 70, 0.08);
        }
        .pagination .current {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            box-shadow: 0 2px 12px rgba(230, 57, 70, 0.3);
        }
        .pagination .dots {
            border: none;
            background: transparent;
            color: var(--text-muted);
        }

        /* ===== 响应式辅助 ===== */
        @media screen and (max-width: 1024px) {
            .container {
                max-width: 100%;
            }
        }
        @media screen and (max-width: 520px) {
            .live-bar {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
                padding: 14px 18px;
            }
            .tag-list {
                gap: 6px;
            }
            .tag {
                padding: 4px 12px;
                font-size: 12px;
            }
            .rank-item {
                padding: 12px 14px;
                gap: 12px;
                flex-wrap: wrap;
            }
            .rank-num {
                font-size: 18px;
                min-width: 28px;
            }
        }

        /* Foundation 覆盖：移除多余背景 */
        .grid-container {
            max-width: var(--container-max) !important;
            padding-left: 24px !important;
            padding-right: 24px !important;
        }
        @media screen and (max-width: 640px) {
            .grid-container {
                padding-left: 16px !important;
                padding-right: 16px !important;
            }
        }
        /* 确保 Foundation 卡片样式不冲突 */
        .card {
            background: transparent !important;
            border: none !important;
            box-shadow: none !important;
        }

/* roulang page: category2 */
/* ===== :root 设计变量 ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b6b;
            --secondary: #1d3557;
            --secondary-light: #457b9d;
            --accent: #f4a261;
            --bg-dark: #0b132b;
            --bg-card: #ffffff;
            --bg-light: #f8f9fa;
            --bg-section-alt: #f0f3f7;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a6a;
            --text-weak: #8a8aaa;
            --text-inverse: #ffffff;
            --border-color: #e2e8f0;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 6px 24px rgba(0, 0, 0, 0.10);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.14);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            --max-width: 1200px;
            --header-height: 72px;
        }

        /* ===== 基础 Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-light);
            padding-top: var(--header-height);
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        a:focus-visible {
            outline: 3px solid var(--primary-light);
            outline-offset: 2px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }

        ul,
        ol {
            list-style: none;
        }

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

        /* ===== Container ===== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header / Nav (分段标签导航) ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-color);
            box-shadow: 0 1px 12px rgba(0, 0, 0, 0.04);
            transition: var(--transition);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--secondary);
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }
        .logo i {
            color: var(--primary);
            font-size: 1.6rem;
        }
        .logo span {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .logo:hover {
            opacity: 0.85;
        }

        .nav-tabs {
            display: flex;
            align-items: center;
            gap: 6px;
            background: var(--bg-light);
            padding: 4px;
            border-radius: 40px;
            border: 1px solid var(--border-color);
        }
        .nav-tabs a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 22px;
            border-radius: 32px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-secondary);
            transition: var(--transition);
            white-space: nowrap;
            background: transparent;
            border: none;
        }
        .nav-tabs a i {
            font-size: 0.9rem;
            opacity: 0.7;
        }
        .nav-tabs a:hover {
            color: var(--primary);
            background: rgba(230, 57, 70, 0.06);
        }
        .nav-tabs a.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(230, 57, 70, 0.30);
        }
        .nav-tabs a.active i {
            opacity: 1;
        }

        /* 移动端菜单切换（桌面隐藏） */
        .menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.6rem;
            color: var(--text-primary);
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .menu-toggle:hover {
            background: var(--bg-light);
        }

        /* ===== Hero 板块 ===== */
        .hero-section {
            padding: 80px 0 60px;
            background: linear-gradient(145deg, var(--secondary) 0%, #162a4a 100%);
            color: var(--text-inverse);
            position: relative;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -20%;
            width: 600px;
            height: 600px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(230, 57, 70, 0.15), transparent 70%);
            pointer-events: none;
        }
        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -10%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(244, 162, 97, 0.10), transparent 70%);
            pointer-events: none;
        }
        .hero-content {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 800px;
            margin: 0 auto;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.10);
            backdrop-filter: blur(6px);
            padding: 6px 18px;
            border-radius: 40px;
            font-size: 0.85rem;
            font-weight: 500;
            letter-spacing: 0.3px;
            margin-bottom: 24px;
            border: 1px solid rgba(255, 255, 255, 0.08);
        }
        .hero-badge i {
            color: var(--accent);
        }
        .hero-title {
            font-size: 3.2rem;
            font-weight: 900;
            line-height: 1.2;
            margin-bottom: 20px;
            letter-spacing: -1px;
        }
        .hero-title em {
            font-style: normal;
            background: linear-gradient(135deg, var(--primary-light), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-desc {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.80);
            max-width: 600px;
            margin: 0 auto 32px;
            line-height: 1.8;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 34px;
            border-radius: 40px;
            font-weight: 700;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 6px 20px rgba(230, 57, 70, 0.35);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 10px 32px rgba(230, 57, 70, 0.40);
            color: #fff;
        }
        .btn-outline-light {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.30);
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.10);
            border-color: rgba(255, 255, 255, 0.60);
            transform: translateY(-2px);
            color: #fff;
        }

        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 40px;
            margin-top: 48px;
            padding-top: 40px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }
        .hero-stat-item {
            text-align: center;
        }
        .hero-stat-item .num {
            font-size: 2.2rem;
            font-weight: 800;
            display: block;
            line-height: 1.2;
            background: linear-gradient(135deg, #fff, rgba(255, 255, 255, 0.70));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-stat-item .label {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.60);
            font-weight: 400;
        }

        /* ===== 通用板块标题 ===== */
        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            text-align: center;
            margin-bottom: 12px;
            color: var(--text-primary);
            letter-spacing: -0.5px;
        }
        .section-title i {
            color: var(--primary);
            margin-right: 8px;
        }
        .section-sub {
            text-align: center;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto 48px;
            font-size: 1.05rem;
        }
        .section-sub i {
            opacity: 0.6;
        }

        /* ===== 板块间距 ===== */
        .section-block {
            padding: 80px 0;
        }
        .section-block-alt {
            background: var(--bg-section-alt);
        }
        .section-block-dark {
            background: var(--bg-dark);
            color: var(--text-inverse);
        }
        .section-block-dark .section-title {
            color: #fff;
        }
        .section-block-dark .section-sub {
            color: rgba(255, 255, 255, 0.70);
        }

        /* ===== 卡片网格 ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 28px;
        }

        .card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: var(--transition);
            border: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
        }
        .card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }
        .card-image {
            height: 200px;
            background: linear-gradient(145deg, var(--secondary-light), var(--secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.15);
            font-size: 3.5rem;
            position: relative;
            overflow: hidden;
        }
        .card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
        }
        .card-image .overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(0deg, rgba(0, 0, 0, 0.30), transparent 60%);
        }
        .card-image .badge-top {
            position: absolute;
            top: 16px;
            left: 16px;
            background: var(--primary);
            color: #fff;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.3px;
        }
        .card-body {
            padding: 24px 22px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 12px;
        }
        .tag {
            display: inline-block;
            padding: 3px 14px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 600;
            background: var(--bg-light);
            color: var(--text-secondary);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .tag:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .tag-hot {
            background: rgba(230, 57, 70, 0.08);
            color: var(--primary);
            border-color: rgba(230, 57, 70, 0.15);
        }
        .card-body h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 10px;
            line-height: 1.4;
        }
        .card-body h3 a {
            color: var(--text-primary);
        }
        .card-body h3 a:hover {
            color: var(--primary);
        }
        .card-body p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
            flex: 1;
            margin-bottom: 16px;
        }
        .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 14px;
            border-top: 1px solid var(--border-color);
            font-size: 0.82rem;
            color: var(--text-weak);
        }
        .card-meta i {
            margin-right: 4px;
        }
        .card-meta .author {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .card-meta .avatar {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--secondary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 0.7rem;
            font-weight: 700;
        }

        /* ===== 图文特色区块 ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .feature-visual {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            background: linear-gradient(145deg, var(--secondary-light), var(--secondary));
            min-height: 320px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.08);
            font-size: 6rem;
            position: relative;
        }
        .feature-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
        }
        .feature-text h3 {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 18px;
            line-height: 1.3;
        }
        .feature-text p {
            color: var(--text-secondary);
            font-size: 1.05rem;
            line-height: 1.8;
            margin-bottom: 20px;
        }
        .feature-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 0.98rem;
            color: var(--text-secondary);
        }
        .feature-list li i {
            color: var(--primary);
            font-size: 1.1rem;
            margin-top: 3px;
            flex-shrink: 0;
        }

        /* ===== 实时动态 / 时间线 ===== */
        .timeline {
            position: relative;
            padding-left: 40px;
            max-width: 700px;
            margin: 0 auto;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 16px;
            top: 8px;
            bottom: 8px;
            width: 3px;
            background: linear-gradient(to bottom, var(--primary), var(--accent));
            border-radius: 4px;
        }
        .timeline-item {
            position: relative;
            padding-bottom: 36px;
            padding-left: 24px;
        }
        .timeline-item:last-child {
            padding-bottom: 0;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -28px;
            top: 6px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: var(--primary);
            border: 3px solid var(--bg-light);
            box-shadow: 0 0 0 4px var(--primary-light);
        }
        .timeline-item .time {
            font-size: 0.82rem;
            color: var(--text-weak);
            font-weight: 500;
            display: block;
            margin-bottom: 4px;
        }
        .timeline-item h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .timeline-item p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.6;
        }

        /* ===== 排行榜 ===== */
        .rank-list {
            max-width: 700px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .rank-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--bg-card);
            padding: 16px 22px;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .rank-item:hover {
            transform: translateX(6px);
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }
        .rank-num {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--bg-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1rem;
            color: var(--text-secondary);
            flex-shrink: 0;
        }
        .rank-item:nth-child(1) .rank-num {
            background: var(--primary);
            color: #fff;
        }
        .rank-item:nth-child(2) .rank-num {
            background: var(--accent);
            color: #fff;
        }
        .rank-item:nth-child(3) .rank-num {
            background: var(--secondary-light);
            color: #fff;
        }
        .rank-info {
            flex: 1;
        }
        .rank-info h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 2px;
        }
        .rank-info .sub {
            font-size: 0.82rem;
            color: var(--text-weak);
        }
        .rank-score {
            font-weight: 700;
            color: var(--primary);
            font-size: 1.1rem;
        }

        /* ===== FAQ ===== */
        .faq-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            max-width: 900px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 24px 26px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-md);
        }
        .faq-item h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .faq-item h4 i {
            color: var(--primary);
            font-size: 1.1rem;
        }
        .faq-item p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
            margin-left: 26px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(145deg, var(--secondary), #162a4a);
            padding: 80px 0;
            text-align: center;
            color: var(--text-inverse);
        }
        .cta-section h2 {
            font-size: 2.4rem;
            font-weight: 800;
            margin-bottom: 16px;
        }
        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.75);
            max-width: 560px;
            margin: 0 auto 32px;
        }
        .cta-section .btn {
            font-size: 1.1rem;
            padding: 16px 44px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 60px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo {
            font-size: 1.4rem;
            margin-bottom: 14px;
        }
        .footer-brand .logo span {
            -webkit-text-fill-color: #fff;
            color: #fff;
        }
        .footer-brand p {
            font-size: 0.92rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.55);
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
            letter-spacing: 0.3px;
        }
        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.9rem;
            padding: 4px 0;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 12px;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.35);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.45);
        }
        .footer-bottom a:hover {
            color: var(--primary-light);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .hero-title {
                font-size: 2.6rem;
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-height: 64px;
            }

            .header-inner {
                padding: 0 16px;
            }

            .nav-tabs {
                display: none;
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(18px);
                flex-direction: column;
                padding: 16px;
                border-radius: 0 0 var(--radius-md) var(--radius-md);
                border: none;
                box-shadow: var(--shadow-lg);
                gap: 8px;
            }
            .nav-tabs.open {
                display: flex;
            }
            .nav-tabs a {
                width: 100%;
                justify-content: center;
                padding: 12px 20px;
                border-radius: var(--radius-sm);
            }

            .menu-toggle {
                display: block;
            }

            .hero-section {
                padding: 60px 0 48px;
            }
            .hero-title {
                font-size: 2rem;
            }
            .hero-desc {
                font-size: 1rem;
            }
            .hero-stats {
                gap: 24px;
                margin-top: 32px;
                padding-top: 28px;
            }
            .hero-stat-item .num {
                font-size: 1.7rem;
            }

            .section-block {
                padding: 56px 0;
            }
            .section-title {
                font-size: 1.7rem;
            }

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

            .feature-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .feature-visual {
                min-height: 220px;
                font-size: 4rem;
                order: -1;
            }
            .feature-text h3 {
                font-size: 1.4rem;
            }

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

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .timeline {
                padding-left: 32px;
            }
            .timeline::before {
                left: 10px;
            }
            .timeline-item::before {
                left: -22px;
                width: 12px;
                height: 12px;
            }

            .rank-item {
                padding: 14px 16px;
                flex-wrap: wrap;
            }

            .cta-section h2 {
                font-size: 1.8rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .hero-title {
                font-size: 1.6rem;
            }
            .hero-actions {
                flex-direction: column;
                align-items: center;
            }
            .btn {
                width: 100%;
                justify-content: center;
            }

            .card-image {
                height: 160px;
            }
            .card-body {
                padding: 18px 16px;
            }

            .section-title {
                font-size: 1.4rem;
            }

            .feature-text h3 {
                font-size: 1.2rem;
            }
        }

        /* ===== 工具类 ===== */
        .text-center {
            text-align: center;
        }
        .mt-1 {
            margin-top: 12px;
        }
        .mb-1 {
            margin-bottom: 12px;
        }
        .gap-1 {
            gap: 12px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }