/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --color-primary: #DC2626;
            --color-primary-dark: #B91C1C;
            --color-primary-light: #FEE2E2;
            --color-secondary: #1E293B;
            --color-secondary-light: #334155;
            --color-accent: #F59E0B;
            --color-accent-dark: #D97706;
            --color-bg: #F8FAFC;
            --color-bg-alt: #F1F5F9;
            --color-bg-dark: #0F172A;
            --color-text: #1E293B;
            --color-text-light: #64748B;
            --color-text-inverse: #F8FAFC;
            --color-border: #E2E8F0;
            --color-white: #FFFFFF;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.08), 0 2px 8px rgba(0,0,0,0.04);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.12), 0 4px 16px rgba(0,0,0,0.06);
            --shadow-xl: 0 24px 60px rgba(0,0,0,0.16);
            --space-xs: 0.5rem;
            --space-sm: 1rem;
            --space-md: 2rem;
            --space-lg: 4rem;
            --space-xl: 6rem;
            --max-width: 1200px;
            --header-height: 72px;
            --tab-height: 64px;
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-top: var(--header-height);
            padding-bottom: var(--tab-height);
        }
        @media (min-width: 769px) { body { padding-bottom: 0; } }
        img { max-width: 100%; height: auto; display: block; }
        a { color: inherit; text-decoration: none; transition: color var(--transition); }
        button { cursor: pointer; font-family: inherit; border: none; background: none; }
        input, textarea { font-family: inherit; font-size: 1rem; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: var(--space-md);
            padding-right: var(--space-md);
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: var(--color-white);
            border-bottom: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled { box-shadow: var(--shadow-md); }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--space-md);
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 0.625rem;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--color-primary);
            letter-spacing: -0.02em;
        }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: var(--color-primary);
            color: var(--color-white);
            border-radius: var(--radius-sm);
            font-size: 1.1rem;
        }
        .logo span { color: var(--color-secondary); }
        .nav-items { display: flex; align-items: center; gap: 0.25rem; }
        .nav-items a {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.5rem 1.125rem;
            border-radius: var(--radius-sm);
            font-size: 0.9375rem;
            font-weight: 500;
            color: var(--color-text-light);
            transition: all var(--transition);
        }
        .nav-items a:hover { color: var(--color-primary); background: var(--color-primary-light); }
        .nav-items a.active { color: var(--color-primary); background: var(--color-primary-light); font-weight: 600; }
        .nav-items a i { font-size: 0.875rem; }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.5rem 1.25rem;
            background: var(--color-primary);
            color: var(--color-white) !important;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.875rem;
            transition: all var(--transition);
        }
        .nav-cta:hover { background: var(--color-primary-dark); transform: translateY(-1px); box-shadow: var(--shadow-md); }
        .mobile-toggle { display: none; font-size: 1.5rem; color: var(--color-text); padding: 0.25rem; }
        @media (max-width: 768px) {
            .nav-items { display: none; }
            .mobile-toggle { display: block; }
            .nav-items.open {
                display: flex;
                flex-direction: column;
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: var(--color-white);
                border-bottom: 1px solid var(--color-border);
                box-shadow: var(--shadow-lg);
                padding: var(--space-sm);
                gap: 0.25rem;
            }
            .nav-items.open a { padding: 0.75rem 1rem; }
            .nav-cta { margin-top: 0.5rem; justify-content: center; }
        }

        /* ===== 移动端底部 Tab ===== */
        .bottom-tab {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--tab-height);
            background: var(--color-white);
            border-top: 1px solid var(--color-border);
            box-shadow: 0 -2px 12px rgba(0,0,0,0.06);
            padding: 0 var(--space-sm);
        }
        .bottom-tab-inner {
            display: flex;
            align-items: center;
            justify-content: space-around;
            height: 100%;
            max-width: 480px;
            margin: 0 auto;
        }
        .bottom-tab a {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 2px;
            font-size: 0.7rem;
            color: var(--color-text-light);
            padding: 0.25rem 0.5rem;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            min-width: 60px;
        }
        .bottom-tab a i { font-size: 1.25rem; }
        .bottom-tab a.active { color: var(--color-primary); }
        .bottom-tab a:hover { color: var(--color-primary); }
        @media (max-width: 768px) { .bottom-tab { display: block; } }

        /* ===== Hero 首屏 ===== */
        .hero {
            position: relative;
            min-height: 85vh;
            display: flex;
            align-items: center;
            background: var(--color-bg-dark);
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.45;
            transform: scale(1.05);
            transition: transform 8s ease;
        }
        .hero:hover .hero-bg { transform: scale(1); }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,23,42,0.85) 0%, rgba(30,41,59,0.6) 60%, rgba(220,38,38,0.3) 100%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: var(--space-xl) var(--space-md);
            width: 100%;
        }
        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.375rem 1rem;
            background: rgba(220,38,38,0.2);
            border: 1px solid rgba(220,38,38,0.3);
            border-radius: 100px;
            color: var(--color-accent);
            font-size: 0.8125rem;
            font-weight: 500;
            letter-spacing: 0.03em;
            margin-bottom: var(--space-md);
            backdrop-filter: blur(4px);
        }
        .hero-title {
            font-size: clamp(2.5rem, 6vw, 4.5rem);
            font-weight: 800;
            line-height: 1.1;
            color: var(--color-text-inverse);
            letter-spacing: -0.03em;
            max-width: 780px;
            margin-bottom: var(--space-md);
        }
        .hero-title em { color: var(--color-accent); font-style: normal; }
        .hero-desc {
            font-size: 1.1875rem;
            line-height: 1.8;
            color: rgba(248,250,252,0.8);
            max-width: 600px;
            margin-bottom: var(--space-lg);
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: var(--space-sm);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.8125rem 2rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.9375rem;
            transition: all var(--transition);
            border: 2px solid transparent;
        }
        .btn-primary {
            background: var(--color-primary);
            color: var(--color-white);
            box-shadow: 0 4px 14px rgba(220,38,38,0.35);
        }
        .btn-primary:hover { background: var(--color-primary-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(220,38,38,0.4); }
        .btn-outline {
            background: transparent;
            border-color: rgba(248,250,252,0.4);
            color: var(--color-text-inverse);
        }
        .btn-outline:hover { border-color: var(--color-white); background: rgba(255,255,255,0.08); transform: translateY(-2px); }
        .hero-stats {
            display: flex;
            gap: var(--space-lg);
            margin-top: var(--space-xl);
            padding-top: var(--space-md);
            border-top: 1px solid rgba(248,250,252,0.12);
        }
        .hero-stat { text-align: left; }
        .hero-stat-num {
            font-size: 2.25rem;
            font-weight: 800;
            color: var(--color-white);
            letter-spacing: -0.02em;
        }
        .hero-stat-label { font-size: 0.875rem; color: rgba(248,250,252,0.6); margin-top: 0.125rem; }
        @media (max-width: 768px) {
            .hero { min-height: 70vh; text-align: center; }
            .hero-title { font-size: clamp(2rem, 8vw, 3rem); }
            .hero-desc { font-size: 1rem; margin-left: auto; margin-right: auto; }
            .hero-actions { justify-content: center; }
            .hero-stats { justify-content: center; flex-wrap: wrap; gap: var(--space-md); }
            .hero-stat { text-align: center; }
        }

        /* ===== 板块通用 ===== */
        .section { padding: var(--space-xl) 0; }
        .section-alt { background: var(--color-bg-alt); }
        .section-dark { background: var(--color-bg-dark); color: var(--color-text-inverse); }
        .section-header {
            text-align: center;
            max-width: 680px;
            margin: 0 auto var(--space-lg);
        }
        .section-header h2 {
            font-size: clamp(1.75rem, 3.5vw, 2.5rem);
            font-weight: 800;
            letter-spacing: -0.02em;
        }
        .section-header p {
            color: var(--color-text-light);
            font-size: 1.0625rem;
            margin-top: var(--space-sm);
            line-height: 1.7;
        }
        .section-dark .section-header p { color: rgba(248,250,252,0.65); }
        .section-subtitle {
            display: inline-flex;
            align-items: center;
            gap: 0.375rem;
            padding: 0.25rem 0.875rem;
            background: var(--color-primary-light);
            color: var(--color-primary);
            border-radius: 100px;
            font-size: 0.8125rem;
            font-weight: 600;
            letter-spacing: 0.02em;
            margin-bottom: var(--space-sm);
        }
        .section-dark .section-subtitle { background: rgba(220,38,38,0.2); color: var(--color-accent); }

        /* ===== 介绍板块 ===== */
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--space-lg);
            align-items: center;
        }
        .intro-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            aspect-ratio: 4/3;
            background: var(--color-bg-alt);
        }
        .intro-image img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
        .intro-image:hover img { transform: scale(1.03); }
        .intro-text h3 { font-size: 1.75rem; margin-bottom: var(--space-sm); }
        .intro-text p { color: var(--color-text-light); line-height: 1.8; margin-bottom: var(--space-sm); }
        .intro-features { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-sm); margin-top: var(--space-md); }
        .intro-feature {
            display: flex;
            align-items: flex-start;
            gap: 0.75rem;
        }
        .intro-feature i { color: var(--color-primary); font-size: 1.125rem; margin-top: 0.125rem; }
        .intro-feature span { font-size: 0.9375rem; font-weight: 500; }
        @media (max-width: 768px) {
            .intro-grid { grid-template-columns: 1fr; gap: var(--space-md); }
            .intro-image { order: -1; aspect-ratio: 16/9; }
            .intro-features { grid-template-columns: 1fr; }
        }

        /* ===== 分类卡片 ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: var(--space-md);
        }
        .category-card {
            position: relative;
            border-radius: var(--radius-md);
            overflow: hidden;
            background: var(--color-white);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            border: 1px solid var(--color-border);
        }
        .category-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
        .category-card-image {
            aspect-ratio: 16/9;
            overflow: hidden;
            background: var(--color-bg-alt);
        }
        .category-card-image img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
        .category-card:hover .category-card-image img { transform: scale(1.05); }
        .category-card-body { padding: var(--space-md); }
        .category-card-body h3 { font-size: 1.25rem; margin-bottom: 0.375rem; }
        .category-card-body p { color: var(--color-text-light); font-size: 0.9375rem; line-height: 1.6; margin-bottom: var(--space-sm); }
        .category-card-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.375rem;
            padding: 0.25rem 0.75rem;
            background: var(--color-primary-light);
            color: var(--color-primary);
            border-radius: 100px;
            font-size: 0.75rem;
            font-weight: 600;
        }
        .category-card-link {
            display: inline-flex;
            align-items: center;
            gap: 0.375rem;
            color: var(--color-primary);
            font-weight: 600;
            font-size: 0.875rem;
            margin-top: 0.75rem;
            transition: gap var(--transition);
        }
        .category-card-link:hover { gap: 0.625rem; }

        /* ===== 资讯列表 ===== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
            gap: var(--space-md);
        }
        .news-card {
            background: var(--color-white);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border);
            transition: all var(--transition);
        }
        .news-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
        .news-card-image {
            aspect-ratio: 16/9;
            overflow: hidden;
            background: var(--color-bg-alt);
        }
        .news-card-image img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
        .news-card:hover .news-card-image img { transform: scale(1.04); }
        .news-card-body { padding: var(--space-md); }
        .news-card-meta {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            font-size: 0.8125rem;
            color: var(--color-text-light);
            margin-bottom: 0.625rem;
        }
        .news-card-meta .cat {
            padding: 0.125rem 0.625rem;
            background: var(--color-primary-light);
            color: var(--color-primary);
            border-radius: 100px;
            font-weight: 600;
            font-size: 0.6875rem;
        }
        .news-card-body h3 { font-size: 1.125rem; margin-bottom: 0.375rem; line-height: 1.4; }
        .news-card-body h3 a { color: var(--color-text); transition: color var(--transition); }
        .news-card-body h3 a:hover { color: var(--color-primary); }
        .news-card-body p { color: var(--color-text-light); font-size: 0.9375rem; line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: var(--space-xl) var(--space-md);
            color: var(--color-text-light);
            font-size: 1.0625rem;
            background: var(--color-white);
            border-radius: var(--radius-md);
            border: 1px dashed var(--color-border);
        }
        .news-empty i { font-size: 2.5rem; color: var(--color-border); margin-bottom: var(--space-sm); display: block; }

        /* ===== 数据统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: var(--space-md);
            text-align: center;
        }
        .stat-card {
            padding: var(--space-md) var(--space-sm);
            background: rgba(255,255,255,0.05);
            border-radius: var(--radius-md);
            border: 1px solid rgba(255,255,255,0.08);
            transition: all var(--transition);
        }
        .stat-card:hover { background: rgba(255,255,255,0.08); transform: translateY(-2px); }
        .stat-card i { font-size: 2rem; color: var(--color-accent); margin-bottom: var(--space-sm); }
        .stat-card .num { font-size: 2.5rem; font-weight: 800; color: var(--color-white); letter-spacing: -0.02em; }
        .stat-card .label { font-size: 0.9375rem; color: rgba(248,250,252,0.6); margin-top: 0.25rem; }

        /* ===== 图文推荐 ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--space-md);
        }
        .feature-card {
            display: flex;
            flex-direction: column;
            background: var(--color-white);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border);
            transition: all var(--transition);
        }
        .feature-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
        .feature-card-image {
            aspect-ratio: 3/2;
            overflow: hidden;
            background: var(--color-bg-alt);
        }
        .feature-card-image img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
        .feature-card:hover .feature-card-image img { transform: scale(1.04); }
        .feature-card-body { padding: var(--space-md); flex: 1; display: flex; flex-direction: column; }
        .feature-card-body .tag {
            align-self: flex-start;
            padding: 0.25rem 0.75rem;
            background: var(--color-primary-light);
            color: var(--color-primary);
            border-radius: 100px;
            font-size: 0.75rem;
            font-weight: 600;
            margin-bottom: 0.625rem;
        }
        .feature-card-body h3 { font-size: 1.125rem; margin-bottom: 0.375rem; }
        .feature-card-body p { color: var(--color-text-light); font-size: 0.9375rem; line-height: 1.6; flex: 1; }
        .feature-card-body .meta { font-size: 0.8125rem; color: var(--color-text-light); margin-top: var(--space-sm); }
        @media (max-width: 768px) { .feature-grid { grid-template-columns: 1fr; } }

        /* ===== 流程/优势 ===== */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: var(--space-md);
            counter-reset: step;
        }
        .process-card {
            background: var(--color-white);
            border-radius: var(--radius-md);
            padding: var(--space-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border);
            text-align: center;
            transition: all var(--transition);
            position: relative;
        }
        .process-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .process-card .step {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--color-primary);
            color: var(--color-white);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.25rem;
            font-weight: 800;
            margin: 0 auto var(--space-sm);
        }
        .process-card h4 { font-size: 1.0625rem; margin-bottom: 0.375rem; }
        .process-card p { color: var(--color-text-light); font-size: 0.875rem; line-height: 1.6; }

        /* ===== FAQ ===== */
        .faq-list { max-width: 780px; margin: 0 auto; }
        .faq-item {
            background: var(--color-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            margin-bottom: var(--space-sm);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover { border-color: var(--color-primary); }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: var(--space-md);
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            gap: var(--space-sm);
            user-select: none;
        }
        .faq-question i { color: var(--color-primary); transition: transform var(--transition); font-size: 0.875rem; }
        .faq-item.open .faq-question i { transform: rotate(180deg); }
        .faq-answer {
            padding: 0 var(--space-md) var(--space-md);
            color: var(--color-text-light);
            line-height: 1.7;
            font-size: 0.9375rem;
            display: none;
        }
        .faq-item.open .faq-answer { display: block; }
        .section-dark .faq-item { background: rgba(255,255,255,0.05); border-color: rgba(255,255,255,0.1); }
        .section-dark .faq-question { color: var(--color-text-inverse); }
        .section-dark .faq-answer { color: rgba(248,250,252,0.7); }

        /* ===== CTA ===== */
        .cta-box {
            background: var(--color-primary);
            border-radius: var(--radius-lg);
            padding: var(--space-lg) var(--space-md);
            text-align: center;
            color: var(--color-white);
            position: relative;
            overflow: hidden;
        }
        .cta-box::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(255,255,255,0.12) 0%, transparent 70%);
        }
        .cta-box h2 { font-size: clamp(1.5rem, 3vw, 2.25rem); font-weight: 800; position: relative; }
        .cta-box p { font-size: 1.0625rem; opacity: 0.9; margin: var(--space-sm) auto var(--space-md); max-width: 560px; position: relative; }
        .cta-box .btn { background: var(--color-white); color: var(--color-primary); border: none; position: relative; }
        .cta-box .btn:hover { background: var(--color-bg); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.2); }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--color-secondary);
            color: rgba(248,250,252,0.7);
            padding: var(--space-lg) 0 var(--space-md);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--space-lg);
            padding-bottom: var(--space-lg);
            border-bottom: 1px solid rgba(248,250,252,0.08);
        }
        .footer-brand .logo { color: var(--color-white); margin-bottom: var(--space-sm); }
        .footer-brand .logo span { color: var(--color-accent); }
        .footer-brand p { font-size: 0.9375rem; line-height: 1.7; max-width: 340px; }
        .footer-col h4 { color: var(--color-white); font-size: 0.9375rem; font-weight: 600; margin-bottom: var(--space-sm); }
        .footer-col a {
            display: block;
            font-size: 0.875rem;
            color: rgba(248,250,252,0.6);
            padding: 0.25rem 0;
            transition: all var(--transition);
        }
        .footer-col a:hover { color: var(--color-white); padding-left: 4px; }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: var(--space-md);
            font-size: 0.8125rem;
            color: rgba(248,250,252,0.4);
            flex-wrap: wrap;
            gap: var(--space-sm);
        }
        .footer-social { display: flex; gap: var(--space-sm); }
        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255,255,255,0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(248,250,252,0.6);
            transition: all var(--transition);
        }
        .footer-social a:hover { background: var(--color-primary); color: var(--color-white); transform: translateY(-2px); }
        @media (max-width: 768px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: var(--space-md); }
            .footer-brand { grid-column: 1 / -1; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }
        @media (max-width: 520px) { .footer-grid { grid-template-columns: 1fr; } }

        /* ===== 滚动动画 ===== */
        .scroll-fade { opacity: 0; transform: translateY(30px); transition: opacity 0.7s ease, transform 0.7s ease; }
        .scroll-fade.visible { opacity: 1; transform: translateY(0); }

        /* ===== 分隔线 ===== */
        .divider { width: 60px; height: 4px; background: var(--color-primary); border-radius: 4px; margin: var(--space-sm) auto; }

        /* ===== 工具 ===== */
        .text-center { text-align: center; }
        .mt-sm { margin-top: var(--space-sm); }
        .mt-md { margin-top: var(--space-md); }
        .mt-lg { margin-top: var(--space-lg); }
        .gap-sm { gap: var(--space-sm); }
        .gap-md { gap: var(--space-md); }

        /* ===== 主题标签 ===== */
        .topic-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            justify-content: center;
            margin-top: var(--space-sm);
        }
        .topic-tag {
            padding: 0.375rem 1rem;
            border-radius: 100px;
            background: var(--color-bg-alt);
            border: 1px solid var(--color-border);
            font-size: 0.8125rem;
            color: var(--color-text-light);
            transition: all var(--transition);
        }
        .topic-tag:hover { background: var(--color-primary-light); color: var(--color-primary); border-color: var(--color-primary); }
        .section-dark .topic-tag { background: rgba(255,255,255,0.06); border-color: rgba(255,255,255,0.12); color: rgba(248,250,252,0.6); }
        .section-dark .topic-tag:hover { background: rgba(220,38,38,0.2); color: var(--color-accent); border-color: var(--color-accent); }

        /* ===== 引用块 ===== */
        .quote-block {
            background: var(--color-bg-alt);
            border-left: 4px solid var(--color-primary);
            padding: var(--space-md);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: var(--space-md) 0;
            font-style: italic;
            color: var(--color-text-light);
        }
        .quote-block cite { display: block; margin-top: var(--space-sm); font-style: normal; font-weight: 600; color: var(--color-text); }
        .section-dark .quote-block { background: rgba(255,255,255,0.05); color: rgba(248,250,252,0.7); }
        .section-dark .quote-block cite { color: var(--color-text-inverse); }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #dc2626;
            --primary-dark: #b91c1c;
            --primary-light: #fef2f2;
            --secondary: #1e293b;
            --secondary-light: #334155;
            --accent: #f59e0b;
            --accent-light: #fef3c7;
            --bg: #ffffff;
            --bg-alt: #f8fafc;
            --bg-dark: #0f172a;
            --text: #1e293b;
            --text-light: #64748b;
            --text-white: #f8fafc;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-lg: 24px;
            --shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 12px 48px rgba(0, 0, 0, 0.10);
            --shadow-hover: 0 20px 60px rgba(220, 38, 38, 0.12);
            --space-xs: 8px;
            --space-sm: 16px;
            --space-md: 32px;
            --space-lg: 64px;
            --space-xl: 96px;
            --max-width: 1200px;
            --header-height: 76px;
            --bottom-nav-height: 68px;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
        }

        /* ===== Reset / Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-top: var(--header-height);
            padding-bottom: 0;
        }
        @media (max-width: 768px) {
            body {
                padding-bottom: var(--bottom-nav-height);
            }
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        a:focus-visible {
            outline: 3px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        button:focus-visible {
            outline: 3px solid var(--primary);
            outline-offset: 2px;
            border-radius: var(--radius-sm);
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.25;
            font-weight: 700;
            color: var(--secondary);
        }
        h1 {
            font-size: clamp(2.2rem, 5vw, 3.8rem);
            letter-spacing: -0.02em;
        }
        h2 {
            font-size: clamp(1.6rem, 3.5vw, 2.6rem);
            letter-spacing: -0.01em;
        }
        h3 {
            font-size: clamp(1.2rem, 2vw, 1.6rem);
        }
        h4 {
            font-size: 1.1rem;
        }
        p {
            margin-bottom: 1em;
        }
        p:last-child {
            margin-bottom: 0;
        }

        /* ===== Container ===== */
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== Header / Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.94);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
            height: var(--header-height);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
        }
        @media (max-width: 520px) {
            .header-inner {
                padding: 0 16px;
            }
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--secondary);
            letter-spacing: -0.02em;
            flex-shrink: 0;
        }
        .logo .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: var(--primary);
            color: #fff;
            border-radius: 12px;
            font-size: 1.2rem;
        }
        .logo span {
            color: var(--primary);
        }
        .logo:hover {
            color: var(--secondary);
        }

        /* 桌面导航 */
        .nav-items {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-items a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: 10px;
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-light);
            transition: all var(--transition);
            position: relative;
        }
        .nav-items a i {
            font-size: 1rem;
        }
        .nav-items a:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .nav-items a.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 600;
        }
        .nav-items a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
        }
        .nav-items a.nav-cta {
            background: var(--primary);
            color: #fff;
            padding: 8px 22px;
            border-radius: 10px;
            font-weight: 600;
        }
        .nav-items a.nav-cta:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(220, 38, 38, 0.3);
        }
        .nav-items a.nav-cta::after {
            display: none;
        }

        /* 移动端顶部菜单按钮 */
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 6px;
            background: none;
            border: none;
            cursor: pointer;
            border-radius: 8px;
            transition: background var(--transition);
        }
        .menu-toggle:hover {
            background: var(--primary-light);
        }
        .menu-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--secondary);
            border-radius: 4px;
            transition: all var(--transition);
        }
        .menu-toggle.open span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .menu-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .menu-toggle.open span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* 移动端底部 Tab 导航 */
        .bottom-nav {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 999;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-top: 1px solid var(--border);
            height: var(--bottom-nav-height);
            padding: 0 8px;
            box-shadow: 0 -2px 20px rgba(0, 0, 0, 0.04);
        }
        .bottom-nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-around;
            height: 100%;
            max-width: 600px;
            margin: 0 auto;
        }
        .bottom-nav a {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 2px;
            font-size: 0.7rem;
            font-weight: 500;
            color: var(--text-light);
            padding: 4px 12px;
            border-radius: 10px;
            transition: all var(--transition);
            position: relative;
        }
        .bottom-nav a i {
            font-size: 1.3rem;
            transition: transform var(--transition);
        }
        .bottom-nav a:hover {
            color: var(--primary);
        }
        .bottom-nav a:hover i {
            transform: translateY(-2px);
        }
        .bottom-nav a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .bottom-nav a.active i {
            transform: scale(1.1);
        }
        .bottom-nav a.active::after {
            content: '';
            position: absolute;
            top: -1px;
            left: 50%;
            transform: translateX(-50%);
            width: 24px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
        }
        .bottom-nav a.nav-cta-mobile {
            color: var(--primary);
        }
        .bottom-nav a.nav-cta-mobile i {
            color: var(--primary);
        }

        /* ===== 响应式导航 ===== */
        @media (max-width: 768px) {
            .nav-items {
                display: none;
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(16px);
                -webkit-backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 20px 24px;
                gap: 8px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-lg);
                max-height: calc(100vh - var(--header-height) - var(--bottom-nav-height));
                overflow-y: auto;
            }
            .nav-items.open {
                display: flex;
            }
            .nav-items a {
                width: 100%;
                padding: 14px 18px;
                font-size: 1.05rem;
                border-radius: 12px;
                justify-content: flex-start;
            }
            .nav-items a.active::after {
                bottom: 8px;
                left: 18px;
                transform: none;
                width: 3px;
                height: 20px;
            }
            .nav-items a.nav-cta {
                justify-content: center;
                margin-top: 4px;
            }
            .menu-toggle {
                display: flex;
            }
            .bottom-nav {
                display: block;
            }
        }
        @media (max-width: 520px) {
            .bottom-nav a {
                font-size: 0.65rem;
                padding: 4px 8px;
            }
            .bottom-nav a i {
                font-size: 1.2rem;
            }
            .logo {
                font-size: 1.2rem;
            }
            .logo .logo-icon {
                width: 34px;
                height: 34px;
                font-size: 1rem;
            }
        }
        @media (min-width: 769px) {
            .menu-toggle {
                display: none !important;
            }
            .nav-items {
                display: flex !important;
            }
            .bottom-nav {
                display: none !important;
            }
        }

        /* ===== Hero / Banner ===== */
        .category-hero {
            position: relative;
            padding: var(--space-xl) 0 var(--space-lg);
            min-height: 380px;
            display: flex;
            align-items: center;
            background: var(--bg-dark);
            overflow: hidden;
        }
        .category-hero .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.35;
            transform: scale(1.05);
            transition: transform 8s ease;
        }
        .category-hero:hover .hero-bg {
            transform: scale(1.0);
        }
        .category-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.88) 0%, rgba(15, 23, 42, 0.60) 60%, rgba(220, 38, 38, 0.20) 100%);
            z-index: 1;
        }
        .category-hero .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .category-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.10);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.15);
            padding: 6px 20px;
            border-radius: 40px;
            color: var(--text-white);
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: var(--space-sm);
        }
        .category-hero .hero-badge i {
            color: var(--accent);
        }
        .category-hero h1 {
            color: #fff;
            margin-bottom: var(--space-sm);
            max-width: 800px;
            margin-left: auto;
            margin-right: auto;
        }
        .category-hero h1 span {
            color: var(--accent);
        }
        .category-hero .hero-desc {
            color: rgba(248, 250, 252, 0.80);
            font-size: 1.15rem;
            max-width: 640px;
            margin: 0 auto var(--space-md);
            line-height: 1.8;
        }
        .category-hero .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: var(--space-sm);
            justify-content: center;
        }
        .category-hero .btn-primary {
            background: var(--primary);
            color: #fff;
            padding: 14px 36px;
            border-radius: 12px;
            font-weight: 600;
            font-size: 1rem;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            transition: all var(--transition);
            box-shadow: 0 4px 20px rgba(220, 38, 38, 0.30);
        }
        .category-hero .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(220, 38, 38, 0.40);
            color: #fff;
        }
        .category-hero .btn-outline-light {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.30);
            padding: 12px 32px;
            border-radius: 12px;
            font-weight: 600;
            font-size: 1rem;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            transition: all var(--transition);
        }
        .category-hero .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.10);
            border-color: #fff;
            transform: translateY(-2px);
            color: #fff;
        }
        @media (max-width: 520px) {
            .category-hero {
                min-height: 300px;
                padding: var(--space-lg) 0 var(--space-md);
            }
            .category-hero h1 {
                font-size: 1.8rem;
            }
            .category-hero .hero-desc {
                font-size: 1rem;
            }
            .category-hero .btn-primary,
            .category-hero .btn-outline-light {
                padding: 12px 24px;
                font-size: 0.9rem;
            }
        }

        /* ===== 分类简介 ===== */
        .section-intro {
            padding: var(--space-lg) 0;
            background: var(--bg);
        }
        .section-intro .grid-2 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--space-lg);
            align-items: center;
        }
        .section-intro .intro-text h2 {
            margin-bottom: var(--space-sm);
        }
        .section-intro .intro-text p {
            color: var(--text-light);
            font-size: 1.05rem;
            line-height: 1.9;
        }
        .section-intro .intro-text .intro-stats {
            display: flex;
            gap: var(--space-md);
            margin-top: var(--space-md);
            flex-wrap: wrap;
        }
        .section-intro .intro-text .stat-item {
            text-align: center;
            background: var(--bg-alt);
            padding: var(--space-sm) var(--space-md);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
        }
        .section-intro .intro-text .stat-item .num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            display: block;
        }
        .section-intro .intro-text .stat-item .label {
            font-size: 0.85rem;
            color: var(--text-light);
            font-weight: 500;
        }
        .section-intro .intro-image img {
            border-radius: var(--radius);
            box-shadow: var(--shadow-lg);
            width: 100%;
            height: 360px;
            object-fit: cover;
        }
        @media (max-width: 768px) {
            .section-intro .grid-2 {
                grid-template-columns: 1fr;
                gap: var(--space-md);
            }
            .section-intro .intro-image img {
                height: 240px;
            }
            .section-intro .intro-text .stat-item .num {
                font-size: 1.6rem;
            }
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: var(--space-lg) 0;
        }
        .section-alt {
            background: var(--bg-alt);
        }
        .section-dark {
            background: var(--bg-dark);
            color: var(--text-white);
        }
        .section-dark h2,
        .section-dark h3,
        .section-dark h4 {
            color: #fff;
        }
        .section-dark .section-desc {
            color: rgba(248, 250, 252, 0.70);
        }
        .section-header {
            text-align: center;
            margin-bottom: var(--space-lg);
        }
        .section-header h2 {
            margin-bottom: var(--space-xs);
        }
        .section-header .section-desc {
            color: var(--text-light);
            max-width: 600px;
            margin: 0 auto;
            font-size: 1.05rem;
        }
        .section-header .section-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary-light);
            color: var(--primary);
            padding: 4px 16px;
            border-radius: 40px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: var(--space-sm);
        }

        /* ===== 卡片网格 ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--space-md);
        }
        @media (max-width: 768px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .card-grid {
                grid-template-columns: 1fr;
            }
        }

        .card {
            background: #fff;
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            transition: all var(--transition);
            box-shadow: var(--shadow);
            display: flex;
            flex-direction: column;
        }
        .card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary);
        }
        .card .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: 0;
            transition: transform 0.6s ease;
        }
        .card:hover .card-img {
            transform: scale(1.05);
        }
        .card .card-body {
            padding: var(--space-sm) var(--space-md) var(--space-md);
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .card .card-tag {
            display: inline-flex;
            align-self: flex-start;
            background: var(--primary-light);
            color: var(--primary);
            padding: 2px 14px;
            border-radius: 40px;
            font-size: 0.75rem;
            font-weight: 600;
            margin-bottom: var(--space-xs);
        }
        .card .card-title {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: var(--space-xs);
            line-height: 1.4;
        }
        .card .card-title a {
            color: inherit;
        }
        .card .card-title a:hover {
            color: var(--primary);
        }
        .card .card-text {
            color: var(--text-light);
            font-size: 0.92rem;
            line-height: 1.7;
            flex: 1;
        }
        .card .card-meta {
            display: flex;
            align-items: center;
            gap: var(--space-sm);
            margin-top: var(--space-sm);
            font-size: 0.82rem;
            color: var(--text-light);
            border-top: 1px solid var(--border-light);
            padding-top: var(--space-sm);
        }
        .card .card-meta i {
            margin-right: 4px;
        }
        .card .card-meta .rating {
            color: var(--accent);
            font-weight: 600;
        }

        /* ===== 图文交替 ===== */
        .alternate-grid {
            display: flex;
            flex-direction: column;
            gap: var(--space-lg);
        }
        .alternate-item {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--space-lg);
            align-items: center;
        }
        .alternate-item.reverse .alt-image {
            order: 2;
        }
        .alternate-item.reverse .alt-text {
            order: 1;
        }
        .alternate-item .alt-image img {
            border-radius: var(--radius);
            box-shadow: var(--shadow-lg);
            width: 100%;
            height: 300px;
            object-fit: cover;
        }
        .alternate-item .alt-text h3 {
            margin-bottom: var(--space-xs);
        }
        .alternate-item .alt-text p {
            color: var(--text-light);
            line-height: 1.8;
        }
        .alternate-item .alt-text .alt-list {
            margin-top: var(--space-sm);
            display: flex;
            flex-direction: column;
            gap: var(--space-xs);
        }
        .alternate-item .alt-text .alt-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            color: var(--text-light);
            font-size: 0.95rem;
        }
        .alternate-item .alt-text .alt-list li i {
            color: var(--primary);
            margin-top: 4px;
            flex-shrink: 0;
        }
        @media (max-width: 768px) {
            .alternate-item {
                grid-template-columns: 1fr;
                gap: var(--space-md);
            }
            .alternate-item.reverse .alt-image {
                order: 1;
            }
            .alternate-item.reverse .alt-text {
                order: 2;
            }
            .alternate-item .alt-image img {
                height: 220px;
            }
        }

        /* ===== 日历 / 时间线 ===== */
        .timeline {
            position: relative;
            padding-left: 40px;
            max-width: 700px;
            margin: 0 auto;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 16px;
            top: 0;
            bottom: 0;
            width: 3px;
            background: var(--border);
            border-radius: 4px;
        }
        .timeline-item {
            position: relative;
            margin-bottom: var(--space-md);
            padding: var(--space-sm) var(--space-md);
            background: #fff;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: all var(--transition);
        }
        .timeline-item:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-hover);
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -32px;
            top: 20px;
            width: 14px;
            height: 14px;
            background: var(--primary);
            border-radius: 50%;
            border: 3px solid #fff;
            box-shadow: 0 0 0 3px var(--primary);
        }
        .timeline-item .tl-date {
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 4px;
        }
        .timeline-item .tl-title {
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--secondary);
            margin-bottom: 4px;
        }
        .timeline-item .tl-desc {
            color: var(--text-light);
            font-size: 0.9rem;
            line-height: 1.6;
        }
        @media (max-width: 520px) {
            .timeline {
                padding-left: 32px;
            }
            .timeline::before {
                left: 12px;
            }
            .timeline-item::before {
                left: -26px;
                width: 12px;
                height: 12px;
            }
            .timeline-item {
                padding: var(--space-xs) var(--space-sm);
            }
        }

        /* ===== FAQ ===== */
        .faq-grid {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: var(--space-sm);
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary);
        }
        .faq-item .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: var(--space-sm) var(--space-md);
            font-weight: 600;
            font-size: 1.02rem;
            color: var(--secondary);
            cursor: pointer;
            background: none;
            width: 100%;
            text-align: left;
            gap: var(--space-sm);
            transition: background var(--transition);
        }
        .faq-item .faq-question:hover {
            background: var(--primary-light);
        }
        .faq-item .faq-question i {
            color: var(--primary);
            font-size: 1.1rem;
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-item .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 var(--space-md);
            color: var(--text-light);
            line-height: 1.8;
            font-size: 0.95rem;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 var(--space-md) var(--space-sm);
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: var(--space-lg) 0;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            color: #fff;
            text-align: center;
        }
        .cta-section h2 {
            color: #fff;
            margin-bottom: var(--space-xs);
        }
        .cta-section .cta-desc {
            color: rgba(255, 255, 255, 0.85);
            max-width: 560px;
            margin: 0 auto var(--space-md);
            font-size: 1.05rem;
        }
        .cta-section .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: var(--space-sm);
            justify-content: center;
        }
        .cta-section .btn-cta-primary {
            background: #fff;
            color: var(--primary);
            padding: 14px 36px;
            border-radius: 12px;
            font-weight: 700;
            font-size: 1rem;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            transition: all var(--transition);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
        }
        .cta-section .btn-cta-primary:hover {
            background: var(--accent-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
            color: var(--primary-dark);
        }
        .cta-section .btn-cta-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.40);
            padding: 12px 32px;
            border-radius: 12px;
            font-weight: 600;
            font-size: 1rem;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            transition: all var(--transition);
        }
        .cta-section .btn-cta-outline:hover {
            background: rgba(255, 255, 255, 0.10);
            border-color: #fff;
            transform: translateY(-2px);
            color: #fff;
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb {
            padding: var(--space-sm) 0;
            background: var(--bg-alt);
            border-bottom: 1px solid var(--border);
        }
        .breadcrumb .container {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.88rem;
            color: var(--text-light);
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--text-light);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .separator {
            color: var(--border);
        }
        .breadcrumb .current {
            color: var(--primary);
            font-weight: 600;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(248, 250, 252, 0.70);
            padding: var(--space-lg) 0 var(--space-md);
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--space-md);
            margin-bottom: var(--space-md);
        }
        .site-footer .footer-brand .logo {
            color: #fff;
            margin-bottom: var(--space-sm);
            font-size: 1.3rem;
        }
        .site-footer .footer-brand .logo .logo-icon {
            background: var(--primary);
        }
        .site-footer .footer-brand p {
            font-size: 0.92rem;
            line-height: 1.8;
            max-width: 360px;
        }
        .site-footer .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.06);
            color: rgba(248, 250, 252, 0.60);
            font-size: 1.2rem;
            transition: all var(--transition);
            margin-right: 8px;
        }
        .site-footer .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .site-footer .footer-col h4 {
            color: #fff;
            font-size: 0.95rem;
            margin-bottom: var(--space-sm);
            font-weight: 700;
        }
        .site-footer .footer-col a {
            display: block;
            color: rgba(248, 250, 252, 0.55);
            font-size: 0.88rem;
            padding: 4px 0;
            transition: all var(--transition);
        }
        .site-footer .footer-col a:hover {
            color: var(--primary);
            padding-left: 4px;
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: var(--space-sm);
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: var(--space-xs);
            font-size: 0.82rem;
            color: rgba(248, 250, 252, 0.40);
        }
        .site-footer .footer-bottom a {
            color: rgba(248, 250, 252, 0.40);
        }
        .site-footer .footer-bottom a:hover {
            color: var(--primary);
        }
        @media (max-width: 768px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--space-md);
            }
            .site-footer .footer-brand {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 520px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--space-md);
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== 工具类 ===== */
        .text-center {
            text-align: center;
        }
        .mt-sm {
            margin-top: var(--space-sm);
        }
        .mt-md {
            margin-top: var(--space-md);
        }
        .mt-lg {
            margin-top: var(--space-lg);
        }
        .mb-sm {
            margin-bottom: var(--space-sm);
        }
        .mb-md {
            margin-bottom: var(--space-md);
        }
        .mb-lg {
            margin-bottom: var(--space-lg);
        }
        .gap-sm {
            gap: var(--space-sm);
        }
        .gap-md {
            gap: var(--space-md);
        }

        /* ===== 结构化数据隐藏 ===== */
        .json-ld {
            display: none;
        }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #d42a2a;
            --primary-dark: #b01e1e;
            --primary-light: #f05a5a;
            --secondary: #1e3a5f;
            --secondary-light: #2d5a8a;
            --accent: #f5c518;
            --bg-light: #f8fafc;
            --bg-white: #ffffff;
            --bg-dark: #0f172a;
            --bg-gray: #f1f5f9;
            --text-dark: #0f172a;
            --text-body: #334155;
            --text-muted: #64748b;
            --text-light: #f8fafc;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
            --space-xs: 0.5rem;
            --space-sm: 1rem;
            --space-md: 2rem;
            --space-lg: 3.5rem;
            --space-xl: 5rem;
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; font-size: 16px; }
        body {
            font-family: var(--font-sans);
            color: var(--text-body);
            background: var(--bg-light);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        button, input, textarea { font-family: inherit; font-size: inherit; outline: none; border: none; }
        ul, ol { list-style: none; }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--space-md);
        }
        .section-title {
            font-size: clamp(1.6rem, 4vw, 2.2rem);
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: var(--space-sm);
            line-height: 1.3;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 640px;
            margin-bottom: var(--space-lg);
        }
        .text-center { text-align: center; }
        .mx-auto { margin-left: auto; margin-right: auto; }

        /* ===== Header & Navigation ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border);
            transition: var(--transition);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--text-dark);
            letter-spacing: -0.3px;
        }
        .logo-icon {
            width: 38px;
            height: 38px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
        }
        .logo span { color: var(--primary); font-weight: 700; }
        .nav-items {
            display: flex;
            align-items: center;
            gap: 0.25rem;
        }
        .nav-items a {
            padding: 0.5rem 1rem;
            border-radius: var(--radius-sm);
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-body);
            transition: var(--transition);
            position: relative;
        }
        .nav-items a i { margin-right: 0.4rem; font-size: 0.85rem; }
        .nav-items a:hover { background: var(--bg-gray); color: var(--primary); }
        .nav-items a.active { color: var(--primary); background: rgba(212,42,42,0.08); font-weight: 600; }
        .nav-items a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
        }
        .nav-cta {
            background: var(--primary) !important;
            color: #fff !important;
            padding: 0.5rem 1.2rem !important;
            border-radius: var(--radius-sm) !important;
            font-weight: 600 !important;
            margin-left: 0.5rem;
        }
        .nav-cta:hover { background: var(--primary-dark) !important; transform: translateY(-1px); box-shadow: var(--shadow-sm); }
        .nav-cta i { margin-right: 0.3rem; }
        .mobile-toggle { display: none; font-size: 1.5rem; color: var(--text-dark); background: none; cursor: pointer; padding: 0.25rem; }

        /* ===== Mobile Bottom Tab ===== */
        .mobile-bottom-nav {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 200;
            background: rgba(255,255,255,0.96);
            backdrop-filter: blur(14px);
            border-top: 1px solid var(--border);
            padding: 0.25rem 0 env(safe-area-inset-bottom, 0.25rem);
            justify-content: space-around;
            box-shadow: 0 -2px 12px rgba(0,0,0,0.06);
        }
        .mobile-bottom-nav a {
            display: flex;
            flex-direction: column;
            align-items: center;
            padding: 0.35rem 0.5rem;
            font-size: 0.65rem;
            color: var(--text-muted);
            font-weight: 500;
            transition: var(--transition);
            min-width: 56px;
        }
        .mobile-bottom-nav a i { font-size: 1.15rem; margin-bottom: 0.1rem; }
        .mobile-bottom-nav a.active { color: var(--primary); }
        .mobile-bottom-nav a.nav-cta { background: transparent !important; color: var(--primary) !important; }
        .mobile-bottom-nav a.nav-cta i { color: var(--primary); }

        /* ===== Page Banner ===== */
        .page-banner {
            position: relative;
            padding: var(--space-xl) 0 var(--space-lg);
            background: linear-gradient(135deg, var(--bg-dark) 0%, #1a2a4a 100%);
            overflow: hidden;
            min-height: 260px;
            display: flex;
            align-items: center;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.15;
            mix-blend-mode: overlay;
        }
        .page-banner .container { position: relative; z-index: 2; }
        .page-banner .breadcrumb {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.85rem;
            color: rgba(248,250,252,0.6);
            margin-bottom: var(--space-sm);
            flex-wrap: wrap;
        }
        .page-banner .breadcrumb a { color: rgba(248,250,252,0.7); }
        .page-banner .breadcrumb a:hover { color: var(--accent); }
        .page-banner .breadcrumb .sep { color: rgba(248,250,252,0.3); }
        .page-banner h1 {
            font-size: clamp(1.6rem, 4vw, 2.6rem);
            font-weight: 800;
            color: var(--text-light);
            line-height: 1.25;
            max-width: 860px;
            margin-bottom: var(--space-sm);
        }
        .page-banner .meta {
            display: flex;
            flex-wrap: wrap;
            gap: var(--space-sm) var(--space-md);
            color: rgba(248,250,252,0.7);
            font-size: 0.9rem;
        }
        .page-banner .meta i { margin-right: 0.3rem; }
        .page-banner .meta .tag {
            display: inline-block;
            background: rgba(212,42,42,0.25);
            color: var(--accent);
            padding: 0.15rem 0.75rem;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 500;
        }

        /* ===== Article Main ===== */
        .article-main {
            padding: var(--space-lg) 0 var(--space-xl);
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: var(--space-lg);
        }
        .article-content { min-width: 0; }
        .article-content .featured-image {
            border-radius: var(--radius-md);
            overflow: hidden;
            margin-bottom: var(--space-md);
            box-shadow: var(--shadow-md);
        }
        .article-content .featured-image img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .article-content .featured-image:hover img { transform: scale(1.02); }
        .article-body {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text-body);
        }
        .article-body p { margin-bottom: 1.2em; }
        .article-body h2, .article-body h3 {
            color: var(--text-dark);
            margin-top: 1.8em;
            margin-bottom: 0.6em;
            font-weight: 700;
        }
        .article-body h2 { font-size: 1.5rem; }
        .article-body h3 { font-size: 1.2rem; }
        .article-body ul, .article-body ol { margin-bottom: 1.2em; padding-left: 1.5em; }
        .article-body li { margin-bottom: 0.4em; list-style: disc; }
        .article-body blockquote {
            border-left: 4px solid var(--primary);
            background: var(--bg-gray);
            padding: var(--space-sm) var(--space-md);
            border-radius: var(--radius-sm);
            margin: 1.5em 0;
            color: var(--text-dark);
            font-style: italic;
        }
        .article-body img { border-radius: var(--radius-sm); margin: 1.5em 0; }

        /* ===== Article Sidebar ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: var(--space-md);
        }
        .sidebar-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: var(--space-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
        }
        .sidebar-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: var(--space-sm);
            padding-bottom: var(--space-xs);
            border-bottom: 2px solid var(--primary);
            display: inline-block;
        }
        .sidebar-card ul li {
            padding: 0.5rem 0;
            border-bottom: 1px solid var(--border-light);
            font-size: 0.92rem;
        }
        .sidebar-card ul li:last-child { border-bottom: none; }
        .sidebar-card ul li a { color: var(--text-body); display: flex; align-items: center; gap: 0.5rem; }
        .sidebar-card ul li a:hover { color: var(--primary); }
        .sidebar-card ul li a i { color: var(--primary); font-size: 0.75rem; }
        .sidebar-cta {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            color: #fff;
            border-radius: var(--radius-md);
            padding: var(--space-md);
            text-align: center;
        }
        .sidebar-cta h4 { font-size: 1.1rem; margin-bottom: 0.5rem; }
        .sidebar-cta p { font-size: 0.88rem; opacity: 0.9; margin-bottom: var(--space-sm); }
        .sidebar-cta .btn-outline-light {
            display: inline-block;
            border: 2px solid rgba(255,255,255,0.6);
            color: #fff;
            padding: 0.5rem 1.5rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            transition: var(--transition);
        }
        .sidebar-cta .btn-outline-light:hover { background: #fff; color: var(--primary); }

        /* ===== Article Footer (Tags, Share, Prev/Next) ===== */
        .article-footer {
            margin-top: var(--space-lg);
            padding-top: var(--space-md);
            border-top: 1px solid var(--border);
        }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            margin-bottom: var(--space-md);
        }
        .article-tags .tag {
            display: inline-block;
            background: var(--bg-gray);
            color: var(--text-muted);
            padding: 0.25rem 0.9rem;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 500;
            transition: var(--transition);
        }
        .article-tags .tag:hover { background: var(--primary); color: #fff; }
        .share-bar {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            margin-bottom: var(--space-md);
        }
        .share-bar span { font-weight: 600; color: var(--text-dark); font-size: 0.92rem; }
        .share-bar a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--bg-gray);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .share-bar a:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
        .prev-next {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--space-sm);
            margin-top: var(--space-md);
        }
        .prev-next a {
            padding: var(--space-sm);
            border-radius: var(--radius-sm);
            background: var(--bg-white);
            border: 1px solid var(--border);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .prev-next a:hover { border-color: var(--primary); box-shadow: var(--shadow-sm); }
        .prev-next .label { font-size: 0.78rem; color: var(--text-muted); }
        .prev-next .title { font-size: 0.92rem; font-weight: 600; color: var(--text-dark); }
        .prev-next .next { text-align: right; }

        /* ===== Related Posts ===== */
        .related-section {
            padding: var(--space-lg) 0 var(--space-xl);
            background: var(--bg-white);
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            gap: var(--space-md);
        }
        .related-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .related-card .thumb {
            aspect-ratio: 16/10;
            overflow: hidden;
        }
        .related-card .thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
        .related-card:hover .thumb img { transform: scale(1.05); }
        .related-card .info { padding: var(--space-sm); }
        .related-card .info .cat {
            font-size: 0.75rem;
            color: var(--primary);
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.3px;
        }
        .related-card .info h4 { font-size: 1rem; font-weight: 700; color: var(--text-dark); margin: 0.25rem 0 0.3rem; line-height: 1.4; }
        .related-card .info h4 a { color: inherit; }
        .related-card .info h4 a:hover { color: var(--primary); }
        .related-card .info .date { font-size: 0.8rem; color: var(--text-muted); }

        /* ===== CTA Section ===== */
        .cta-section {
            padding: var(--space-xl) 0;
            background: linear-gradient(135deg, var(--bg-dark) 0%, #1a2a4a 100%);
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .cta-section .container { position: relative; z-index: 2; }
        .cta-section h2 { font-size: clamp(1.6rem, 3.5vw, 2.2rem); color: var(--text-light); margin-bottom: var(--space-sm); }
        .cta-section p { color: rgba(248,250,252,0.7); max-width: 560px; margin: 0 auto var(--space-md); font-size: 1.05rem; }
        .cta-section .btn-group { display: flex; gap: var(--space-sm); justify-content: center; flex-wrap: wrap; }
        .btn-primary {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            padding: 0.75rem 2rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            transition: var(--transition);
            border: 2px solid var(--primary);
        }
        .btn-primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); transform: translateY(-2px); box-shadow: var(--shadow-md); }
        .btn-outline {
            display: inline-block;
            background: transparent;
            color: var(--text-light);
            padding: 0.75rem 2rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            border: 2px solid rgba(248,250,252,0.3);
            transition: var(--transition);
        }
        .btn-outline:hover { border-color: var(--text-light); background: rgba(255,255,255,0.08); transform: translateY(-2px); }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(248,250,252,0.7);
            padding: var(--space-xl) 0 var(--space-md);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--space-lg);
            margin-bottom: var(--space-lg);
        }
        .footer-brand .logo { color: var(--text-light); margin-bottom: var(--space-sm); }
        .footer-brand p { font-size: 0.9rem; line-height: 1.7; max-width: 340px; }
        .footer-social a {
            display: inline-flex;
            width: 36px; height: 36px;
            border-radius: 50%;
            background: rgba(248,250,252,0.08);
            color: rgba(248,250,252,0.6);
            align-items: center;
            justify-content: center;
            margin-right: 0.5rem;
            transition: var(--transition);
        }
        .footer-social a:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
        .footer-col h4 {
            color: var(--text-light);
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: var(--space-sm);
        }
        .footer-col a {
            display: block;
            color: rgba(248,250,252,0.55);
            font-size: 0.88rem;
            padding: 0.3rem 0;
            transition: var(--transition);
        }
        .footer-col a:hover { color: var(--primary); padding-left: 4px; }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: var(--space-md);
            border-top: 1px solid rgba(248,250,252,0.08);
            font-size: 0.82rem;
            color: rgba(248,250,252,0.4);
            flex-wrap: wrap;
            gap: var(--space-sm);
        }
        .footer-bottom a { color: rgba(248,250,252,0.5); }
        .footer-bottom a:hover { color: var(--primary); }

        /* ===== Not Found ===== */
        .not-found-box {
            text-align: center;
            padding: var(--space-xl) 0;
        }
        .not-found-box .icon {
            font-size: 4rem;
            color: var(--text-muted);
            margin-bottom: var(--space-sm);
        }
        .not-found-box h2 { font-size: 1.6rem; color: var(--text-dark); margin-bottom: 0.5rem; }
        .not-found-box p { color: var(--text-muted); margin-bottom: var(--space-md); }
        .not-found-box .btn-primary { display: inline-block; }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .article-layout { grid-template-columns: 1fr; }
            .article-sidebar { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-md); }
        }
        @media (max-width: 900px) {
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .footer-brand { grid-column: 1 / -1; }
        }
        @media (max-width: 768px) {
            .site-header .container { height: 60px; }
            .nav-items { display: none; }
            .mobile-toggle { display: block; }
            .nav-items.open {
                display: flex;
                flex-direction: column;
                position: absolute;
                top: 60px;
                left: 0;
                right: 0;
                background: rgba(255,255,255,0.98);
                backdrop-filter: blur(14px);
                border-bottom: 1px solid var(--border);
                padding: var(--space-sm);
                gap: 0.25rem;
                box-shadow: var(--shadow-md);
            }
            .nav-items.open a { padding: 0.7rem 1rem; width: 100%; }
            .nav-cta { margin-left: 0 !important; text-align: center; }
            .mobile-bottom-nav { display: flex; }
            body { padding-bottom: 64px; }
            .page-banner { padding: var(--space-lg) 0 var(--space-md); min-height: 200px; }
            .page-banner h1 { font-size: 1.4rem; }
            .article-sidebar { grid-template-columns: 1fr; }
            .prev-next { grid-template-columns: 1fr; }
            .related-grid { grid-template-columns: 1fr 1fr; }
            .footer-grid { grid-template-columns: 1fr; gap: var(--space-md); }
            .footer-bottom { flex-direction: column; text-align: center; }
            .cta-section .btn-group { flex-direction: column; align-items: center; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 var(--space-sm); }
            .page-banner .meta { flex-direction: column; gap: var(--space-xs); }
            .related-grid { grid-template-columns: 1fr; }
            .section-title { font-size: 1.3rem; }
            .article-body { font-size: 0.98rem; }
            .article-footer .share-bar { flex-wrap: wrap; }
        }
        @media (min-width: 769px) {
            .mobile-bottom-nav { display: none !important; }
            body { padding-bottom: 0 !important; }
        }

        /* ===== Focus & Accessibility ===== */
        a:focus-visible, button:focus-visible, input:focus-visible {
            outline: 3px solid var(--primary);
            outline-offset: 2px;
            border-radius: var(--radius-sm);
        }

/* roulang page: category2 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b6b;
            --secondary: #1d3557;
            --secondary-light: #2a4a7a;
            --accent: #f4a261;
            --accent-light: #f8c291;
            --bg-light: #f8f9fa;
            --bg-white: #ffffff;
            --bg-dark: #1a1a2e;
            --bg-card: #ffffff;
            --text-dark: #1a1a2e;
            --text-body: #2d3436;
            --text-muted: #636e72;
            --text-light: #b2bec3;
            --text-white: #f8f9fa;
            --border-color: #e9ecef;
            --border-light: #f0f0f0;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --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);
            --shadow-hover: 0 12px 36px rgba(230,57,70,0.18);
            --space-xs: 0.5rem;
            --space-sm: 1rem;
            --space-md: 2rem;
            --space-lg: 4rem;
            --space-xl: 6rem;
            --max-width: 1200px;
            --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* ===== Reset & Base ===== */
        *, *::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-body);
            background: var(--bg-light);
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-dark); }
        button, input, textarea { font-family: inherit; font-size: 1rem; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.25; color: var(--text-dark); font-weight: 700; }
        h1 { font-size: 2.8rem; }
        h2 { font-size: 2.2rem; margin-bottom: var(--space-sm); }
        h3 { font-size: 1.5rem; }
        h4 { font-size: 1.2rem; }
        p { margin-bottom: 1rem; }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--space-md);
        }
        @media (max-width: 768px) {
            .container { padding: 0 var(--space-sm); }
            h1 { font-size: 2rem; }
            h2 { font-size: 1.7rem; }
        }
        .section-title {
            text-align: center;
            margin-bottom: var(--space-lg);
        }
        .section-title h2 {
            position: relative;
            display: inline-block;
        }
        .section-title h2::after {
            content: '';
            display: block;
            width: 60px;
            height: 4px;
            background: var(--primary);
            border-radius: 4px;
            margin: 0.75rem auto 0;
        }
        .section-title p {
            color: var(--text-muted);
            max-width: 640px;
            margin: 0.75rem auto 0;
            font-size: 1.1rem;
        }

        /* ===== Header & Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255,255,255,0.96);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-sm);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            padding: 0 var(--space-md);
            max-width: var(--max-width);
            margin: 0 auto;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--text-dark);
            letter-spacing: -0.5px;
        }
        .logo .logo-icon {
            width: 40px;
            height: 40px;
            background: var(--primary);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.2rem;
        }
        .logo span { color: var(--primary); font-weight: 300; }
        .nav-items { display: flex; align-items: center; gap: 0.25rem; }
        .nav-items a {
            padding: 0.5rem 1rem;
            border-radius: var(--radius-sm);
            color: var(--text-body);
            font-weight: 500;
            font-size: 0.95rem;
            display: flex;
            align-items: center;
            gap: 0.4rem;
            transition: var(--transition);
            position: relative;
        }
        .nav-items a i { font-size: 0.9rem; color: var(--text-muted); }
        .nav-items a:hover { background: rgba(230,57,70,0.06); color: var(--primary); }
        .nav-items a.active { background: rgba(230,57,70,0.10); color: var(--primary); font-weight: 600; }
        .nav-items a.active i { color: var(--primary); }
        .nav-items a.nav-cta {
            background: var(--primary);
            color: #fff;
            padding: 0.5rem 1.2rem;
            border-radius: 50px;
            font-weight: 600;
        }
        .nav-items a.nav-cta i { color: #fff; }
        .nav-items a.nav-cta:hover { background: var(--primary-dark); transform: translateY(-1px); box-shadow: 0 4px 16px rgba(230,57,70,0.3); }
        .nav-toggle { display: none; background: none; border: none; font-size: 1.5rem; color: var(--text-dark); cursor: pointer; padding: 0.25rem; }

        /* Mobile Top Nav */
        @media (max-width: 900px) {
            .nav-items { display: none; flex-direction: column; position: absolute; top: 72px; left: 0; right: 0; background: rgba(255,255,255,0.98); backdrop-filter: blur(16px); border-bottom: 1px solid var(--border-color); padding: var(--space-sm); gap: 0.25rem; box-shadow: var(--shadow-md); }
            .nav-items.open { display: flex; }
            .nav-items a { padding: 0.75rem 1rem; border-radius: var(--radius-sm); }
            .nav-toggle { display: block; }
        }

        /* ===== Bottom Tab Navigation (Mobile) ===== */
        .bottom-tabs {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 999;
            background: rgba(255,255,255,0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-top: 1px solid var(--border-color);
            padding: 0.35rem 0.5rem;
            box-shadow: 0 -2px 12px rgba(0,0,0,0.06);
        }
        .bottom-tabs .tab-inner {
            display: flex;
            justify-content: space-around;
            align-items: center;
            max-width: 600px;
            margin: 0 auto;
        }
        .bottom-tabs a {
            display: flex;
            flex-direction: column;
            align-items: center;
            padding: 0.35rem 0.5rem;
            border-radius: var(--radius-sm);
            color: var(--text-muted);
            font-size: 0.7rem;
            font-weight: 500;
            transition: var(--transition);
            gap: 0.15rem;
            min-width: 56px;
        }
        .bottom-tabs a i { font-size: 1.2rem; transition: var(--transition); }
        .bottom-tabs a.active { color: var(--primary); }
        .bottom-tabs a.active i { transform: scale(1.1); }
        .bottom-tabs a:hover { color: var(--primary); background: rgba(230,57,70,0.05); }
        .bottom-tabs a.nav-cta-tab { color: var(--primary); }
        .bottom-tabs a.nav-cta-tab i { background: var(--primary); color: #fff; border-radius: 50%; width: 32px; height: 32px; display: flex; align-items: center; justify-content: center; font-size: 1rem; }
        @media (max-width: 768px) {
            .bottom-tabs { display: block; }
            body { padding-bottom: 70px; }
        }

        /* ===== Page Banner ===== */
        .page-banner {
            padding: 10rem 0 4rem;
            background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
            position: relative;
            overflow: hidden;
            min-height: 360px;
            display: flex;
            align-items: center;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.20;
            mix-blend-mode: overlay;
        }
        .page-banner::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 80px;
            background: linear-gradient(to top, var(--bg-light), transparent);
        }
        .page-banner .container { position: relative; z-index: 2; }
        .page-banner h1 {
            color: var(--text-white);
            font-size: 3rem;
            font-weight: 800;
            letter-spacing: -1px;
            line-height: 1.15;
            margin-bottom: 0.75rem;
        }
        .page-banner h1 span { color: var(--primary-light); }
        .page-banner p {
            color: rgba(248,250,252,0.8);
            font-size: 1.2rem;
            max-width: 600px;
            margin-bottom: 1.5rem;
        }
        .page-banner .banner-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .page-banner .banner-tags span {
            background: rgba(255,255,255,0.12);
            backdrop-filter: blur(4px);
            padding: 0.35rem 1rem;
            border-radius: 50px;
            color: rgba(248,250,252,0.9);
            font-size: 0.85rem;
            font-weight: 500;
            border: 1px solid rgba(255,255,255,0.08);
        }
        @media (max-width: 768px) {
            .page-banner { padding: 7rem 0 3rem; min-height: 280px; }
            .page-banner h1 { font-size: 2rem; }
            .page-banner p { font-size: 1rem; }
        }

        /* ===== Category Filter ===== */
        .category-filter {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-color);
            padding: var(--space-sm) 0;
            position: sticky;
            top: 72px;
            z-index: 100;
        }
        .category-filter .filter-inner {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            align-items: center;
        }
        .category-filter .filter-inner a {
            padding: 0.4rem 1.1rem;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-muted);
            background: var(--bg-light);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .category-filter .filter-inner a:hover { border-color: var(--primary); color: var(--primary); background: rgba(230,57,70,0.04); }
        .category-filter .filter-inner a.active { background: var(--primary); color: #fff; border-color: var(--primary); box-shadow: 0 4px 12px rgba(230,57,70,0.25); }
        .category-filter .filter-inner a i { margin-right: 0.35rem; font-size: 0.8rem; }
        @media (max-width: 768px) {
            .category-filter { top: 0; }
            .category-filter .filter-inner { gap: 0.35rem; }
            .category-filter .filter-inner a { font-size: 0.8rem; padding: 0.3rem 0.8rem; }
        }

        /* ===== Gear Grid ===== */
        .gear-grid-section {
            padding: var(--space-lg) 0;
            background: var(--bg-light);
        }
        .gear-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--space-md);
        }
        .gear-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
        }
        .gear-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); border-color: var(--primary-light); }
        .gear-card .card-img {
            height: 220px;
            background: var(--bg-light);
            position: relative;
            overflow: hidden;
        }
        .gear-card .card-img img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
        .gear-card:hover .card-img img { transform: scale(1.06); }
        .gear-card .card-img .badge {
            position: absolute;
            top: var(--space-xs);
            left: var(--space-xs);
            background: var(--primary);
            color: #fff;
            padding: 0.25rem 0.8rem;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            box-shadow: 0 2px 8px rgba(230,57,70,0.3);
        }
        .gear-card .card-img .rating {
            position: absolute;
            bottom: var(--space-xs);
            right: var(--space-xs);
            background: rgba(0,0,0,0.7);
            backdrop-filter: blur(4px);
            color: #fff;
            padding: 0.2rem 0.7rem;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
        }
        .gear-card .card-img .rating i { color: #f4a261; margin-right: 0.25rem; }
        .gear-card .card-body {
            padding: var(--space-sm);
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .gear-card .card-body h3 { font-size: 1.15rem; margin-bottom: 0.4rem; }
        .gear-card .card-body h3 a { color: var(--text-dark); }
        .gear-card .card-body h3 a:hover { color: var(--primary); }
        .gear-card .card-body .meta {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 0.6rem;
            display: flex;
            gap: 1rem;
        }
        .gear-card .card-body .meta i { margin-right: 0.25rem; }
        .gear-card .card-body p {
            font-size: 0.95rem;
            color: var(--text-muted);
            flex: 1;
            margin-bottom: 0.75rem;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .gear-card .card-body .card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 0.35rem;
            margin-bottom: 0.75rem;
        }
        .gear-card .card-body .card-tags span {
            background: rgba(230,57,70,0.06);
            color: var(--primary);
            padding: 0.15rem 0.6rem;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 500;
        }
        .gear-card .card-body .card-footer {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 0.5rem;
            border-top: 1px solid var(--border-light);
        }
        .gear-card .card-body .card-footer .price {
            font-weight: 700;
            color: var(--primary);
            font-size: 1.1rem;
        }
        .gear-card .card-body .card-footer .read-more {
            font-size: 0.9rem;
            color: var(--primary);
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 0.3rem;
        }
        .gear-card .card-body .card-footer .read-more:hover { gap: 0.6rem; }
        @media (max-width: 1024px) {
            .gear-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 600px) {
            .gear-grid { grid-template-columns: 1fr; }
            .gear-card .card-img { height: 200px; }
        }

        /* ===== Featured Review ===== */
        .featured-review {
            padding: var(--space-lg) 0;
            background: var(--bg-white);
        }
        .featured-review .featured-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--space-lg);
            align-items: center;
        }
        .featured-review .featured-img {
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            height: 400px;
        }
        .featured-review .featured-img img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
        .featured-review .featured-img:hover img { transform: scale(1.04); }
        .featured-review .featured-content .tag {
            display: inline-block;
            background: rgba(230,57,70,0.08);
            color: var(--primary);
            padding: 0.25rem 1rem;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 0.75rem;
        }
        .featured-review .featured-content h2 { font-size: 2rem; margin-bottom: 0.5rem; }
        .featured-review .featured-content .rating-stars { color: #f4a261; font-size: 1.1rem; margin-bottom: 0.75rem; }
        .featured-review .featured-content .rating-stars span { color: var(--text-muted); font-size: 0.9rem; margin-left: 0.5rem; }
        .featured-review .featured-content p { color: var(--text-muted); }
        .featured-review .featured-content .feature-list { margin-top: 1rem; }
        .featured-review .featured-content .feature-list li {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.35rem 0;
            font-size: 0.95rem;
        }
        .featured-review .featured-content .feature-list li i { color: var(--primary); width: 20px; }
        .featured-review .featured-content .btn-group { margin-top: 1.5rem; display: flex; gap: 1rem; flex-wrap: wrap; }
        .featured-review .featured-content .btn-group .btn-primary {
            padding: 0.7rem 2rem;
            background: var(--primary);
            color: #fff;
            border-radius: 50px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .featured-review .featured-content .btn-group .btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(230,57,70,0.3); }
        .featured-review .featured-content .btn-group .btn-outline {
            padding: 0.7rem 2rem;
            background: transparent;
            color: var(--text-dark);
            border-radius: 50px;
            font-weight: 600;
            border: 2px solid var(--border-color);
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .featured-review .featured-content .btn-group .btn-outline:hover { border-color: var(--primary); color: var(--primary); }
        @media (max-width: 768px) {
            .featured-review .featured-grid { grid-template-columns: 1fr; gap: var(--space-md); }
            .featured-review .featured-img { height: 260px; }
            .featured-review .featured-content h2 { font-size: 1.5rem; }
        }

        /* ===== Review Process ===== */
        .review-process {
            padding: var(--space-lg) 0;
            background: var(--bg-dark);
            color: var(--text-white);
        }
        .review-process .section-title h2 { color: var(--text-white); }
        .review-process .section-title h2::after { background: var(--primary-light); }
        .review-process .section-title p { color: rgba(248,250,252,0.6); }
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--space-md);
            margin-top: var(--space-md);
        }
        .process-step {
            text-align: center;
            padding: var(--space-md) var(--space-sm);
            background: rgba(255,255,255,0.04);
            border-radius: var(--radius-md);
            border: 1px solid rgba(255,255,255,0.06);
            transition: var(--transition);
        }
        .process-step:hover { background: rgba(255,255,255,0.08); transform: translateY(-4px); }
        .process-step .step-icon {
            width: 60px;
            height: 60px;
            background: rgba(230,57,70,0.2);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1rem;
            font-size: 1.6rem;
            color: var(--primary-light);
        }
        .process-step h4 { color: var(--text-white); margin-bottom: 0.4rem; font-size: 1.1rem; }
        .process-step p { color: rgba(248,250,252,0.6); font-size: 0.9rem; margin-bottom: 0; }
        .process-step .step-number {
            display: inline-block;
            width: 28px;
            height: 28px;
            background: var(--primary);
            color: #fff;
            border-radius: 50%;
            font-size: 0.8rem;
            font-weight: 700;
            line-height: 28px;
            margin-bottom: 0.75rem;
        }
        @media (max-width: 900px) {
            .process-steps { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 520px) {
            .process-steps { grid-template-columns: 1fr; }
        }

        /* ===== Stats ===== */
        .stats-section {
            padding: var(--space-lg) 0;
            background: var(--bg-white);
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--space-md);
            text-align: center;
        }
        .stats-grid .stat-item h3 { font-size: 2.6rem; color: var(--primary); margin-bottom: 0.25rem; }
        .stats-grid .stat-item p { color: var(--text-muted); font-size: 1rem; margin-bottom: 0; }
        @media (max-width: 768px) {
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: var(--space-sm); }
            .stats-grid .stat-item h3 { font-size: 2rem; }
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: var(--space-lg) 0;
            background: var(--bg-light);
        }
        .faq-list { max-width: 800px; margin: 0 auto; }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            margin-bottom: var(--space-sm);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { box-shadow: var(--shadow-md); }
        .faq-item .faq-question {
            padding: var(--space-sm) var(--space-md);
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--text-dark);
            gap: 1rem;
            user-select: none;
        }
        .faq-item .faq-question i { color: var(--primary); transition: var(--transition); font-size: 1.1rem; }
        .faq-item.active .faq-question i { transform: rotate(45deg); }
        .faq-item .faq-answer {
            padding: 0 var(--space-md) var(--space-sm);
            color: var(--text-muted);
            line-height: 1.8;
            display: none;
        }
        .faq-item.active .faq-answer { display: block; }

        /* ===== CTA ===== */
        .cta-section {
            padding: var(--space-lg) 0;
            background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
            position: relative;
            text-align: center;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            opacity: 0.10;
            mix-blend-mode: overlay;
        }
        .cta-section .container { position: relative; z-index: 2; }
        .cta-section h2 { color: var(--text-white); font-size: 2.4rem; margin-bottom: 0.5rem; }
        .cta-section p { color: rgba(248,250,252,0.7); font-size: 1.15rem; max-width: 600px; margin: 0 auto 1.5rem; }
        .cta-section .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            padding: 0.9rem 2.4rem;
            background: var(--primary);
            color: #fff;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.1rem;
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }
        .cta-section .cta-btn:hover { background: var(--primary-dark); transform: translateY(-3px); box-shadow: 0 8px 30px rgba(230,57,70,0.35); }
        .cta-section .cta-btn i { transition: var(--transition); }
        .cta-section .cta-btn:hover i { transform: translateX(4px); }
        @media (max-width: 768px) {
            .cta-section h2 { font-size: 1.7rem; }
            .cta-section p { font-size: 1rem; }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(248,250,252,0.7);
            padding: var(--space-lg) 0 var(--space-md);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: var(--space-md);
            padding-bottom: var(--space-md);
            border-bottom: 1px solid rgba(255,255,255,0.06);
        }
        .footer-brand .logo { color: var(--text-white); margin-bottom: 0.75rem; }
        .footer-brand p { font-size: 0.9rem; line-height: 1.7; color: rgba(248,250,252,0.55); max-width: 320px; }
        .footer-social a {
            display: inline-flex;
            width: 40px;
            height: 40px;
            background: rgba(255,255,255,0.06);
            border-radius: 50%;
            align-items: center;
            justify-content: center;
            color: rgba(248,250,252,0.6);
            font-size: 1.1rem;
            transition: var(--transition);
            margin-right: 0.4rem;
        }
        .footer-social a:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
        .footer-col h4 { color: var(--text-white); font-size: 1rem; margin-bottom: 1rem; font-weight: 600; }
        .footer-col a {
            display: block;
            color: rgba(248,250,252,0.55);
            font-size: 0.9rem;
            padding: 0.35rem 0;
            transition: var(--transition);
        }
        .footer-col a:hover { color: var(--primary-light); padding-left: 4px; }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: var(--space-md);
            font-size: 0.85rem;
            color: rgba(248,250,252,0.35);
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .footer-bottom a { color: rgba(248,250,252,0.35); }
        .footer-bottom a:hover { color: var(--primary-light); }
        @media (max-width: 768px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: var(--space-sm); }
            .footer-brand { grid-column: 1 / -1; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }
        @media (max-width: 520px) {
            .footer-grid { grid-template-columns: 1fr; }
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb {
            padding: var(--space-sm) 0;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-color);
            font-size: 0.9rem;
            color: var(--text-muted);
        }
        .breadcrumb a { color: var(--text-muted); }
        .breadcrumb a:hover { color: var(--primary); }
        .breadcrumb span { color: var(--text-dark); font-weight: 500; }

        /* ===== Scroll to top ===== */
        .scroll-top {
            position: fixed;
            bottom: 90px;
            right: 24px;
            z-index: 99;
            width: 48px;
            height: 48px;
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 50%;
            font-size: 1.2rem;
            cursor: pointer;
            box-shadow: var(--shadow-md);
            transition: var(--transition);
            opacity: 0;
            visibility: hidden;
            transform: translateY(20px);
        }
        .scroll-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
        .scroll-top:hover { background: var(--primary-dark); transform: translateY(-4px); box-shadow: var(--shadow-hover); }
        @media (max-width: 768px) {
            .scroll-top { bottom: 80px; right: 16px; width: 42px; height: 42px; font-size: 1rem; }
        }

        /* ===== Accessibility ===== */
        :focus-visible { outline: 3px solid var(--primary); outline-offset: 2px; border-radius: 4px; }
        .sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }

        /* ===== Mobile Tab Active ===== */
        @media (max-width: 768px) {
            .bottom-tabs a.active { color: var(--primary); }
        }