/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #c62828;
            --primary-dark: #8e0000;
            --primary-light: #ff5f52;
            --secondary: #1a1a2e;
            --secondary-light: #2d2d44;
            --accent: #f9a825;
            --bg-body: #f5f5f5;
            --bg-card: #ffffff;
            --bg-dark: #0d0d1a;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a6a;
            --text-light: #8888aa;
            --text-white: #ffffff;
            --border-color: #e0e0e8;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow: 0 6px 24px rgba(0,0,0,0.08);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --sidebar-width: 240px;
            --header-height: 64px;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
        }

        /* ===== 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);
            background: var(--bg-body);
            color: var(--text-primary);
            line-height: 1.6;
            min-height: 100vh;
            display: flex;
        }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-dark); }
        a:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; border-radius: 4px; }
        img { max-width: 100%; height: auto; display: block; }
        ul, ol { list-style: none; }
        button, input, textarea { font-family: inherit; font-size: 1rem; }
        button { cursor: pointer; border: none; background: none; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 20px; width: 100%; }
        .section-title { font-size: 1.75rem; font-weight: 700; margin-bottom: 0.5rem; color: var(--text-primary); }
        .section-subtitle { font-size: 1rem; color: var(--text-secondary); margin-bottom: 2rem; max-width: 600px; }
        .text-center { text-align: center; }
        .mx-auto { margin-left: auto; margin-right: auto; }

        /* ===== 左侧导航 ===== */
        .app-sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--bg-card);
            border-right: 1px solid var(--border-color);
            z-index: 1000;
            display: flex;
            flex-direction: column;
            transition: transform var(--transition);
            overflow-y: auto;
        }
        .sidebar-logo {
            padding: 24px 20px 16px;
            border-bottom: 1px solid var(--border-color);
        }
        .sidebar-logo a {
            font-size: 1.2rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .sidebar-logo a i { font-size: 1.6rem; color: var(--primary); }
        .sidebar-logo span { font-size: 0.75rem; color: var(--text-light); display: block; margin-top: 2px; font-weight: 400; }
        .sidebar-nav { flex: 1; padding: 16px 12px; }
        .sidebar-nav .nav-section { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 1px; color: var(--text-light); padding: 12px 12px 6px; font-weight: 600; }
        .sidebar-nav a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 10px 14px;
            border-radius: var(--radius-sm);
            color: var(--text-secondary);
            font-weight: 500;
            font-size: 0.95rem;
            transition: var(--transition);
            margin-bottom: 2px;
        }
        .sidebar-nav a i { width: 20px; text-align: center; font-size: 1.1rem; }
        .sidebar-nav a:hover { background: rgba(198, 40, 40, 0.06); color: var(--primary); }
        .sidebar-nav a.active { background: var(--primary); color: #fff; box-shadow: 0 4px 12px rgba(198,40,40,0.3); }
        .sidebar-nav a.active i { color: #fff; }
        .sidebar-footer { padding: 16px 20px; border-top: 1px solid var(--border-color); font-size: 0.75rem; color: var(--text-light); text-align: center; }

        /* ===== 主内容区 ===== */
        .app-main {
            margin-left: var(--sidebar-width);
            flex: 1;
            min-height: 100vh;
            background: var(--bg-body);
        }

        /* ===== 移动端顶部栏 ===== */
        .mobile-topbar {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--header-height);
            background: var(--bg-card);
            border-bottom: 1px solid var(--border-color);
            z-index: 999;
            align-items: center;
            justify-content: space-between;
            padding: 0 16px;
        }
        .mobile-topbar .logo-text { font-size: 1.1rem; font-weight: 800; color: var(--primary); }
        .mobile-topbar .hamburger { font-size: 1.5rem; color: var(--text-primary); padding: 8px; }
        .sidebar-overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.4); z-index: 999; }

        /* ===== Hero 首屏 ===== */
        .hero {
            position: relative;
            padding: 100px 0 80px;
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            min-height: 520px;
            display: flex;
            align-items: center;
            color: #fff;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13,13,26,0.88) 0%, rgba(198,40,40,0.55) 100%);
            z-index: 1;
        }
        .hero .container { position: relative; z-index: 2; }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255,255,255,0.12);
            backdrop-filter: blur(10px);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.9);
            margin-bottom: 24px;
            border: 1px solid rgba(255,255,255,0.15);
        }
        .hero h1 { font-size: 3rem; font-weight: 800; line-height: 1.2; margin-bottom: 20px; max-width: 700px; }
        .hero h1 .highlight { color: var(--accent); }
        .hero p { font-size: 1.15rem; color: rgba(255,255,255,0.8); max-width: 580px; margin-bottom: 32px; line-height: 1.7; }
        .hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
        .hero-actions .btn-primary {
            background: var(--primary);
            color: #fff;
            padding: 14px 36px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
            border: 2px solid var(--primary);
        }
        .hero-actions .btn-primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(198,40,40,0.4); }
        .hero-actions .btn-outline {
            background: transparent;
            color: #fff;
            padding: 14px 36px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
            border: 2px solid rgba(255,255,255,0.3);
        }
        .hero-actions .btn-outline:hover { border-color: #fff; background: rgba(255,255,255,0.08); transform: translateY(-2px); }
        .hero-stats { display: flex; gap: 40px; margin-top: 48px; flex-wrap: wrap; }
        .hero-stats .stat-item { text-align: center; }
        .hero-stats .stat-num { font-size: 2rem; font-weight: 800; color: var(--accent); }
        .hero-stats .stat-label { font-size: 0.85rem; color: rgba(255,255,255,0.6); margin-top: 2px; }

        /* ===== 板块通用 ===== */
        .section { padding: 72px 0; }
        .section-alt { background: var(--bg-card); }
        .section-dark { background: var(--bg-dark); color: #fff; }
        .section-dark .section-title { color: #fff; }
        .section-dark .section-subtitle { color: rgba(255,255,255,0.7); }

        /* ===== 关于板块 ===== */
        .about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
        .about-image { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-lg); }
        .about-image img { width: 100%; height: 360px; object-fit: cover; transition: var(--transition); }
        .about-image:hover img { transform: scale(1.03); }
        .about-content h2 { font-size: 1.75rem; font-weight: 700; margin-bottom: 16px; }
        .about-content p { color: var(--text-secondary); margin-bottom: 16px; line-height: 1.7; }
        .about-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px; }
        .about-tags .tag {
            background: rgba(198,40,40,0.08);
            color: var(--primary);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
        }

        /* ===== 特色卡片 ===== */
        .features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
        .feature-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 32px 24px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border-color);
            text-align: center;
        }
        .feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--primary-light); }
        .feature-icon {
            width: 60px; height: 60px; border-radius: 16px;
            background: rgba(198,40,40,0.08);
            display: flex; align-items: center; justify-content: center;
            margin: 0 auto 18px;
            font-size: 1.6rem;
            color: var(--primary);
            transition: var(--transition);
        }
        .feature-card:hover .feature-icon { background: var(--primary); color: #fff; }
        .feature-card h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 10px; }
        .feature-card p { font-size: 0.92rem; color: var(--text-secondary); line-height: 1.6; }

        /* ===== 分类入口 ===== */
        .category-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
        .category-card {
            position: relative;
            border-radius: var(--radius);
            overflow: hidden;
            background: var(--bg-card);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            display: flex;
            align-items: center;
            padding: 28px 24px;
            gap: 24px;
        }
        .category-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: var(--primary-light); }
        .category-card .cat-icon {
            width: 64px; height: 64px; border-radius: 16px;
            background: rgba(198,40,40,0.08);
            display: flex; align-items: center; justify-content: center;
            font-size: 1.8rem;
            color: var(--primary);
            flex-shrink: 0;
        }
        .category-card .cat-info h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 4px; }
        .category-card .cat-info p { font-size: 0.88rem; color: var(--text-secondary); }
        .category-card .cat-arrow { margin-left: auto; font-size: 1.4rem; color: var(--text-light); transition: var(--transition); }
        .category-card:hover .cat-arrow { color: var(--primary); transform: translateX(4px); }

        /* ===== 最新资讯 (CMS) ===== */
        .news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
        .news-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .news-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: var(--primary-light); }
        .news-card .news-img { height: 180px; background: var(--secondary-light); position: relative; overflow: hidden; }
        .news-card .news-img img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
        .news-card:hover .news-img img { transform: scale(1.05); }
        .news-card .news-img .news-cat {
            position: absolute; top: 12px; left: 12px;
            background: var(--primary); color: #fff;
            padding: 4px 12px; border-radius: 50px;
            font-size: 0.75rem; font-weight: 600;
        }
        .news-card .news-body { padding: 20px; }
        .news-card .news-body h3 { font-size: 1rem; font-weight: 700; margin-bottom: 8px; line-height: 1.4; }
        .news-card .news-body h3 a { color: var(--text-primary); }
        .news-card .news-body h3 a:hover { color: var(--primary); }
        .news-card .news-body p { font-size: 0.88rem; color: var(--text-secondary); line-height: 1.6; margin-bottom: 12px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .news-card .news-meta { display: flex; align-items: center; gap: 16px; font-size: 0.8rem; color: var(--text-light); }
        .news-card .news-meta i { margin-right: 4px; }
        .news-empty { grid-column: 1 / -1; text-align: center; padding: 48px 20px; color: var(--text-light); font-size: 1rem; background: var(--bg-card); border-radius: var(--radius); border: 1px dashed var(--border-color); }

        /* ===== 数据统计 ===== */
        .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
        .stat-card {
            background: rgba(255,255,255,0.06);
            border: 1px solid rgba(255,255,255,0.1);
            border-radius: var(--radius);
            padding: 32px 20px;
            text-align: center;
            transition: var(--transition);
        }
        .stat-card:hover { background: rgba(255,255,255,0.1); transform: translateY(-4px); }
        .stat-card .num { font-size: 2.4rem; font-weight: 800; color: var(--accent); }
        .stat-card .label { font-size: 0.9rem; color: rgba(255,255,255,0.7); margin-top: 6px; }

        /* ===== 使用流程 ===== */
        .steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
        .step-card { text-align: center; position: relative; }
        .step-card .step-num {
            width: 48px; height: 48px; border-radius: 50%;
            background: var(--primary); color: #fff;
            display: flex; align-items: center; justify-content: center;
            font-size: 1.2rem; font-weight: 700;
            margin: 0 auto 16px;
            position: relative;
            z-index: 2;
        }
        .step-card .step-line { display: none; }
        .steps-grid .step-card:not(:last-child)::after {
            content: '';
            position: absolute; top: 24px; left: calc(50% + 36px);
            width: calc(100% - 72px); height: 2px;
            background: var(--border-color);
            z-index: 1;
        }
        .section-dark .steps-grid .step-card:not(:last-child)::after { background: rgba(255,255,255,0.15); }
        .step-card h4 { font-size: 1rem; font-weight: 700; margin-bottom: 6px; }
        .step-card p { font-size: 0.88rem; color: var(--text-secondary); line-height: 1.5; }
        .section-dark .step-card p { color: rgba(255,255,255,0.7); }

        /* ===== FAQ ===== */
        .faq-list { max-width: 800px; margin: 0 auto; }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            margin-bottom: 12px;
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--primary-light); }
        .faq-question {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            background: none;
            width: 100%;
            text-align: left;
            color: var(--text-primary);
            gap: 16px;
        }
        .faq-question i { color: var(--primary); transition: var(--transition); font-size: 1.1rem; }
        .faq-item.active .faq-question i { transform: rotate(180deg); }
        .faq-answer {
            padding: 0 24px 18px;
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.7;
            display: none;
        }
        .faq-item.active .faq-answer { display: block; }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            position: relative;
        }
        .cta-section::before {
            content: '';
            position: absolute; inset: 0;
            background: linear-gradient(135deg, rgba(13,13,26,0.9) 0%, rgba(198,40,40,0.6) 100%);
        }
        .cta-section .container { position: relative; z-index: 2; text-align: center; padding: 80px 20px; }
        .cta-section h2 { font-size: 2.2rem; font-weight: 800; color: #fff; margin-bottom: 16px; }
        .cta-section p { font-size: 1.1rem; color: rgba(255,255,255,0.8); max-width: 600px; margin: 0 auto 32px; }
        .cta-section .btn-cta {
            background: var(--accent);
            color: #1a1a2e;
            padding: 16px 48px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.1rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 12px;
            border: 2px solid var(--accent);
        }
        .cta-section .btn-cta:hover { background: #fbc02d; border-color: #fbc02d; transform: translateY(-2px); box-shadow: 0 8px 28px rgba(249,168,37,0.35); }

        /* ===== 页脚 ===== */
        .app-footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.7);
            padding: 48px 0 32px;
            border-top: 1px solid rgba(255,255,255,0.06);
        }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; }
        .footer-brand .logo-text { font-size: 1.2rem; font-weight: 800; color: #fff; display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
        .footer-brand .logo-text i { color: var(--primary); }
        .footer-brand p { font-size: 0.88rem; line-height: 1.7; max-width: 320px; }
        .footer-col h4 { font-size: 0.95rem; font-weight: 700; color: #fff; margin-bottom: 16px; }
        .footer-col a { display: block; font-size: 0.88rem; color: rgba(255,255,255,0.6); padding: 4px 0; transition: var(--transition); }
        .footer-col a:hover { color: var(--accent); padding-left: 4px; }
        .footer-bottom { margin-top: 40px; padding-top: 20px; border-top: 1px solid rgba(255,255,255,0.06); display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; font-size: 0.82rem; color: rgba(255,255,255,0.5); }
        .footer-bottom a { color: rgba(255,255,255,0.5); }
        .footer-bottom a:hover { color: var(--accent); }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .features-grid { grid-template-columns: repeat(2, 1fr); }
            .news-grid { grid-template-columns: repeat(2, 1fr); }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .steps-grid { grid-template-columns: repeat(2, 1fr); gap: 32px 20px; }
            .steps-grid .step-card:not(:last-child)::after { display: none; }
            .footer-grid { grid-template-columns: repeat(2, 1fr); }
        }

        @media (max-width: 768px) {
            .app-sidebar { transform: translateX(-100%); }
            .app-sidebar.open { transform: translateX(0); }
            .mobile-topbar { display: flex; }
            .sidebar-overlay.active { display: block; }
            .app-main { margin-left: 0; padding-top: var(--header-height); }
            .hero { padding: 80px 0 60px; min-height: 400px; }
            .hero h1 { font-size: 2rem; }
            .hero p { font-size: 1rem; }
            .hero-stats { gap: 24px; }
            .hero-stats .stat-num { font-size: 1.5rem; }
            .about-grid { grid-template-columns: 1fr; gap: 32px; }
            .about-image img { height: 240px; }
            .features-grid { grid-template-columns: 1fr; }
            .category-grid { grid-template-columns: 1fr; }
            .news-grid { grid-template-columns: 1fr; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .steps-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-grid { grid-template-columns: 1fr; gap: 32px; }
            .section { padding: 48px 0; }
            .section-title { font-size: 1.4rem; }
            .cta-section h2 { font-size: 1.6rem; }
            .cta-section .container { padding: 48px 20px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .hero-actions { flex-direction: column; align-items: stretch; }
            .hero-actions .btn-primary, .hero-actions .btn-outline { justify-content: center; }
        }

        @media (max-width: 520px) {
            .stats-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
            .stat-card { padding: 20px 12px; }
            .stat-card .num { font-size: 1.8rem; }
            .hero h1 { font-size: 1.6rem; }
            .hero-stats .stat-num { font-size: 1.3rem; }
            .category-card { flex-direction: column; text-align: center; padding: 24px 16px; }
            .category-card .cat-arrow { display: none; }
            .faq-question { font-size: 0.92rem; padding: 14px 16px; }
            .faq-answer { padding: 0 16px 14px; }
        }

        /* ===== 工具类 ===== */
        .sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

/* roulang page: article */
:root {
            --primary: #d32f2f;
            --primary-dark: #b71c1c;
            --primary-light: #ef5350;
            --accent: #ffc107;
            --accent-dark: #ff8f00;
            --bg: #0d0d0d;
            --bg-card: #1a1a1a;
            --bg-elevated: #242424;
            --text: #f5f5f5;
            --text-muted: #9e9e9e;
            --text-weak: #616161;
            --border: #333333;
            --radius: 12px;
            --radius-sm: 8px;
            --shadow: 0 8px 32px rgba(0,0,0,0.6);
            --shadow-hover: 0 12px 48px rgba(211,47,47,0.15);
            --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
            --sidebar-width: 240px;
            --header-height: 0px;
        }
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: 'PingFang SC','Microsoft YaHei','Helvetica Neue',Arial,sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            display: flex;
            min-height: 100vh;
        }
        a { color: var(--primary-light); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--accent); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        h1,h2,h3,h4,h5,h6 { font-weight: 700; line-height: 1.3; color: var(--text); letter-spacing: 0.02em; }
        p { margin-bottom: 1rem; color: var(--text-muted); }
        ul { list-style: none; padding: 0; margin: 0; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; width: 100%; }

        /* ===== 左侧导航 ===== */
        .app-sidebar {
            position: fixed; top: 0; left: 0; width: var(--sidebar-width); height: 100vh;
            background: linear-gradient(180deg, #111 0%, #0a0a0a 100%);
            border-right: 1px solid var(--border);
            display: flex; flex-direction: column; z-index: 1000;
            padding: 28px 16px;
            overflow-y: auto;
        }
        .sidebar-logo {
            font-size: 1.4rem; font-weight: 800; color: var(--text);
            display: flex; align-items: center; gap: 10px;
            padding: 0 8px 24px 8px;
            border-bottom: 1px solid var(--border);
            margin-bottom: 20px;
        }
        .sidebar-logo i { color: var(--primary-light); font-size: 1.6rem; }
        .sidebar-logo span { background: linear-gradient(135deg, var(--primary-light), var(--accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
        .sidebar-nav { display: flex; flex-direction: column; gap: 4px; flex: 1; }
        .nav-section { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.12em; color: var(--text-weak); padding: 12px 8px 6px; font-weight: 600; }
        .sidebar-nav a {
            display: flex; align-items: center; gap: 12px;
            padding: 10px 12px; border-radius: var(--radius-sm);
            font-size: 0.95rem; font-weight: 500; color: var(--text-muted);
            transition: var(--transition); position: relative;
        }
        .sidebar-nav a i { width: 20px; text-align: center; font-size: 1rem; }
        .sidebar-nav a:hover { background: rgba(255,255,255,0.06); color: var(--text); }
        .sidebar-nav a.active {
            background: rgba(211,47,47,0.18); color: var(--primary-light);
            border-left: 3px solid var(--primary-light);
        }
        .sidebar-nav a.active::after { display: none; }
        .sidebar-footer {
            margin-top: auto; padding-top: 16px; border-top: 1px solid var(--border);
            font-size: 0.75rem; color: var(--text-weak); text-align: center;
        }

        /* ===== 主内容区 ===== */
        .app-main {
            margin-left: var(--sidebar-width);
            flex: 1;
            display: flex; flex-direction: column;
            min-height: 100vh;
        }
        .main-content { flex: 1; padding: 40px 0 60px; }

        /* ===== 文章 Banner ===== */
        .article-banner {
            position: relative;
            padding: 80px 0 60px;
            background: linear-gradient(135deg, #141414 0%, #1a1a1a 100%);
            border-bottom: 1px solid var(--border);
            overflow: hidden;
        }
        .article-banner::before {
            content: '';
            position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.12;
            z-index: 0;
        }
        .article-banner .container { position: relative; z-index: 1; }
        .article-breadcrumb {
            font-size: 0.85rem; color: var(--text-muted); margin-bottom: 16px;
            display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
        }
        .article-breadcrumb a { color: var(--text-muted); }
        .article-breadcrumb a:hover { color: var(--primary-light); }
        .article-breadcrumb .sep { color: var(--text-weak); }
        .article-category-badge {
            display: inline-block;
            background: rgba(211,47,47,0.2);
            color: var(--primary-light);
            font-size: 0.75rem; font-weight: 600;
            padding: 4px 14px; border-radius: 20px;
            border: 1px solid rgba(211,47,47,0.3);
            margin-bottom: 14px;
            letter-spacing: 0.06em;
        }
        .article-banner h1 {
            font-size: 2.4rem; font-weight: 800;
            color: var(--text);
            max-width: 860px;
            line-height: 1.25;
            margin-bottom: 16px;
        }
        .article-meta {
            display: flex; align-items: center; gap: 20px;
            font-size: 0.85rem; color: var(--text-muted);
            flex-wrap: wrap;
        }
        .article-meta i { margin-right: 4px; color: var(--text-weak); }
        .article-meta span { display: flex; align-items: center; gap: 4px; }

        /* ===== 文章正文 ===== */
        .article-body-section {
            padding: 48px 0 60px;
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 280px;
            gap: 48px;
        }
        .article-content {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 40px 44px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
        }
        .article-content h2 {
            font-size: 1.6rem; margin-top: 40px; margin-bottom: 16px;
            color: var(--text);
            border-left: 4px solid var(--primary-light);
            padding-left: 16px;
        }
        .article-content h3 {
            font-size: 1.2rem; margin-top: 32px; margin-bottom: 12px;
            color: var(--text);
        }
        .article-content p {
            font-size: 1rem; line-height: 1.9;
            color: #cfcfcf;
            margin-bottom: 1.2rem;
        }
        .article-content ul, .article-content ol {
            padding-left: 24px; margin-bottom: 1.2rem;
            color: #cfcfcf;
        }
        .article-content li { margin-bottom: 6px; line-height: 1.8; }
        .article-content img {
            border-radius: var(--radius-sm);
            margin: 28px auto;
            box-shadow: 0 4px 20px rgba(0,0,0,0.5);
        }
        .article-content blockquote {
            border-left: 4px solid var(--primary-light);
            background: rgba(211,47,47,0.08);
            padding: 16px 24px;
            margin: 24px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: #bbb;
            font-style: italic;
        }
        .article-content .article-tags {
            display: flex; flex-wrap: wrap; gap: 10px;
            margin-top: 36px; padding-top: 24px;
            border-top: 1px solid var(--border);
        }
        .article-content .tag {
            background: rgba(255,255,255,0.06);
            color: var(--text-muted);
            padding: 6px 16px; border-radius: 20px;
            font-size: 0.8rem; border: 1px solid var(--border);
            transition: var(--transition);
        }
        .article-content .tag:hover { background: rgba(211,47,47,0.15); color: var(--primary-light); border-color: var(--primary-light); }

        .article-sidebar { display: flex; flex-direction: column; gap: 28px; }
        .sidebar-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 24px;
            border: 1px solid var(--border);
        }
        .sidebar-card h4 {
            font-size: 1rem; font-weight: 700; margin-bottom: 16px;
            display: flex; align-items: center; gap: 8px;
            color: var(--text);
        }
        .sidebar-card h4 i { color: var(--primary-light); }
        .sidebar-card ul { display: flex; flex-direction: column; gap: 10px; }
        .sidebar-card ul li a {
            font-size: 0.9rem; color: var(--text-muted);
            display: flex; align-items: center; gap: 8px;
            padding: 6px 0; border-bottom: 1px solid rgba(255,255,255,0.04);
            transition: var(--transition);
        }
        .sidebar-card ul li a:hover { color: var(--primary-light); padding-left: 4px; }
        .sidebar-card ul li a i { font-size: 0.7rem; color: var(--text-weak); }

        .sidebar-cta {
            background: linear-gradient(135deg, rgba(211,47,47,0.12), rgba(255,193,7,0.08));
            border: 1px solid rgba(211,47,47,0.2);
            text-align: center;
        }
        .sidebar-cta h4 { justify-content: center; }
        .sidebar-cta p { font-size: 0.85rem; margin-bottom: 16px; }
        .btn-cta-small {
            display: inline-block;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff; font-weight: 600; padding: 10px 28px;
            border-radius: 30px; border: none;
            font-size: 0.85rem; cursor: pointer;
            transition: var(--transition);
        }
        .btn-cta-small:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(211,47,47,0.3); color: #fff; }

        /* ===== 页脚 ===== */
        .app-footer {
            background: #0a0a0a;
            border-top: 1px solid var(--border);
            padding: 48px 0 24px;
            margin-top: auto;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-brand .logo-text {
            font-size: 1.2rem; font-weight: 700; color: var(--text);
            display: flex; align-items: center; gap: 8px;
            margin-bottom: 12px;
        }
        .footer-brand .logo-text i { color: var(--primary-light); }
        .footer-brand p { font-size: 0.85rem; color: var(--text-muted); max-width: 360px; }
        .footer-col h4 {
            font-size: 0.9rem; font-weight: 600; color: var(--text);
            margin-bottom: 14px;
        }
        .footer-col a {
            display: block; font-size: 0.85rem; color: var(--text-muted);
            padding: 4px 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: 20px; border-top: 1px solid var(--border);
            font-size: 0.8rem; color: var(--text-weak); flex-wrap: wrap; gap: 12px;
        }
        .footer-bottom a { color: var(--text-muted); font-size: 1.1rem; }
        .footer-bottom a:hover { color: var(--primary-light); }

        /* ===== 未找到文章 ===== */
        .not-found-box {
            text-align: center;
            padding: 80px 24px;
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border);
        }
        .not-found-box i { font-size: 4rem; color: var(--text-weak); margin-bottom: 20px; display: block; }
        .not-found-box h2 { font-size: 1.6rem; margin-bottom: 12px; }
        .not-found-box p { color: var(--text-muted); margin-bottom: 24px; }
        .btn-back-home {
            display: inline-block;
            background: var(--primary);
            color: #fff; padding: 12px 32px; border-radius: 30px; font-weight: 600;
            transition: var(--transition);
        }
        .btn-back-home:hover { background: var(--primary-dark); color: #fff; transform: translateY(-2px); }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .article-layout { grid-template-columns: 1fr; }
            .article-sidebar { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            .app-sidebar {
                width: 100%; height: auto; position: relative;
                flex-direction: row; flex-wrap: wrap;
                padding: 12px 16px;
                border-right: none; border-bottom: 1px solid var(--border);
            }
            .sidebar-logo { padding: 0; margin: 0; border: none; font-size: 1.1rem; flex: 1; }
            .sidebar-nav { flex-direction: row; flex-wrap: wrap; gap: 2px; flex: none; width: 100%; margin-top: 10px; }
            .nav-section { display: none; }
            .sidebar-nav a { font-size: 0.8rem; padding: 6px 10px; }
            .sidebar-footer { display: none; }
            .app-main { margin-left: 0; }
            .main-content { padding: 20px 0 40px; }
            .article-banner { padding: 40px 0 32px; }
            .article-banner h1 { font-size: 1.6rem; }
            .article-content { padding: 24px 20px; }
            .article-content h2 { font-size: 1.3rem; }
            .article-sidebar { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .article-banner h1 { font-size: 1.3rem; }
            .article-meta { gap: 12px; font-size: 0.75rem; flex-wrap: wrap; }
            .article-content { padding: 16px 14px; }
            .article-content p { font-size: 0.92rem; }
            .sidebar-card { padding: 16px; }
        }

        /* ===== 滚动条 ===== */
        ::-webkit-scrollbar { width: 6px; }
        ::-webkit-scrollbar-track { background: var(--bg); }
        ::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
        ::-webkit-scrollbar-thumb:hover { background: #555; }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #dc2626;
            --primary-dark: #b91c1c;
            --primary-light: #fef2f2;
            --accent: #f59e0b;
            --accent-dark: #d97706;
            --bg-body: #f8fafc;
            --bg-card: #ffffff;
            --bg-sidebar: #0f172a;
            --bg-sidebar-hover: #1e293b;
            --text-primary: #0f172a;
            --text-secondary: #475569;
            --text-light: #94a3b8;
            --text-white: #ffffff;
            --border: #e2e8f0;
            --radius: 12px;
            --radius-sm: 8px;
            --shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 48px rgba(0, 0, 0, 0.12);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --sidebar-width: 240px;
            --header-height: 64px;
            --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'PingFang SC', 'Microsoft YaHei', sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: var(--font-family);
            background: var(--bg-body);
            color: var(--text-primary);
            line-height: 1.7;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }

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

        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        /* ===== 布局容器 ===== */
        .app-wrapper {
            display: flex;
            min-height: 100vh;
        }

        /* ===== 左侧导航 (App Shell) ===== */
        .sidebar {
            width: var(--sidebar-width);
            background: var(--bg-sidebar);
            color: var(--text-white);
            display: flex;
            flex-direction: column;
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            z-index: 1000;
            padding: 0;
            transition: transform var(--transition);
            overflow-y: auto;
            border-right: 1px solid rgba(255, 255, 255, 0.05);
        }

        .sidebar-brand {
            padding: 24px 20px 20px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .sidebar-brand .logo-text {
            font-size: 1.25rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .sidebar-brand .logo-text i {
            color: var(--primary);
            font-size: 1.5rem;
        }
        .sidebar-brand .logo-sub {
            font-size: 0.7rem;
            color: var(--text-light);
            font-weight: 400;
            letter-spacing: 0.3px;
            display: block;
            margin-top: 2px;
            opacity: 0.7;
        }

        .sidebar-nav {
            padding: 16px 12px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .sidebar-nav .nav-section {
            font-size: 0.7rem;
            text-transform: uppercase;
            letter-spacing: 1px;
            color: var(--text-light);
            padding: 12px 12px 6px;
            font-weight: 600;
            opacity: 0.6;
        }

        .sidebar-nav a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            color: rgba(255, 255, 255, 0.75);
            font-size: 0.92rem;
            font-weight: 500;
            transition: all var(--transition);
            text-decoration: none;
        }

        .sidebar-nav a i {
            width: 20px;
            text-align: center;
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.5);
            transition: color var(--transition);
        }

        .sidebar-nav a:hover {
            background: var(--bg-sidebar-hover);
            color: #fff;
        }
        .sidebar-nav a:hover i {
            color: var(--accent);
        }

        .sidebar-nav a.active {
            background: rgba(220, 38, 38, 0.2);
            color: #fff;
            border-left: 3px solid var(--primary);
        }
        .sidebar-nav a.active i {
            color: var(--primary);
        }

        /* ===== 主内容区 ===== */
        .main-content {
            margin-left: var(--sidebar-width);
            flex: 1;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        /* ===== 顶部栏 (移动端) ===== */
        .topbar {
            display: none;
            background: var(--bg-sidebar);
            color: #fff;
            padding: 12px 20px;
            align-items: center;
            justify-content: space-between;
            position: sticky;
            top: 0;
            z-index: 999;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .topbar .logo-text {
            font-size: 1.1rem;
            font-weight: 700;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .topbar .logo-text i {
            color: var(--primary);
        }
        .topbar .hamburger {
            background: none;
            border: none;
            color: #fff;
            font-size: 1.5rem;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 6px;
            transition: background var(--transition);
        }
        .topbar .hamburger:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        /* ===== 移动端遮罩 ===== */
        .sidebar-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.5);
            z-index: 999;
            backdrop-filter: blur(2px);
        }

        /* ===== 页面内容通用 ===== */
        .page-section {
            padding: 80px 40px;
            max-width: 1200px;
            margin: 0 auto;
            width: 100%;
        }

        .page-section.wide {
            max-width: 100%;
            padding-left: 60px;
            padding-right: 60px;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 12px;
            letter-spacing: -0.5px;
            line-height: 1.3;
        }
        .section-title i {
            color: var(--primary);
            margin-right: 10px;
        }

        .section-sub {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 680px;
            margin-bottom: 40px;
            line-height: 1.8;
        }

        .text-center .section-sub {
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== Banner / Hero (分类页) ===== */
        .category-banner {
            position: relative;
            padding: 100px 40px 80px;
            background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
            color: #fff;
            overflow: hidden;
            min-height: 340px;
            display: flex;
            align-items: center;
        }

        .category-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;
        }

        .category-banner .banner-bg-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(220, 38, 38, 0.15) 0%, transparent 70%);
        }

        .category-banner .banner-content {
            position: relative;
            z-index: 2;
            max-width: 1200px;
            margin: 0 auto;
            width: 100%;
        }

        .category-banner .breadcrumb {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .category-banner .breadcrumb a {
            color: rgba(255, 255, 255, 0.7);
            text-decoration: none;
            transition: color var(--transition);
        }
        .category-banner .breadcrumb a:hover {
            color: #fff;
        }
        .category-banner .breadcrumb span {
            color: rgba(255, 255, 255, 0.4);
        }

        .category-banner h1 {
            font-size: 3rem;
            font-weight: 900;
            line-height: 1.2;
            margin-bottom: 16px;
            letter-spacing: -1px;
        }
        .category-banner h1 i {
            color: var(--primary);
            margin-right: 14px;
        }

        .category-banner .banner-desc {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 640px;
            line-height: 1.8;
        }

        .category-banner .banner-stat {
            display: flex;
            gap: 40px;
            margin-top: 32px;
            flex-wrap: wrap;
        }
        .category-banner .banner-stat .stat-item {
            display: flex;
            flex-direction: column;
        }
        .category-banner .banner-stat .stat-num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
        }
        .category-banner .banner-stat .stat-label {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.6);
            margin-top: 4px;
        }

        /* ===== 卡片通用 ===== */
        .card-modern {
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            overflow: hidden;
            transition: all var(--transition);
            border: 1px solid var(--border);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .card-modern:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: var(--primary);
        }

        .card-modern .card-img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            display: block;
        }

        .card-modern .card-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .card-modern .card-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 20px;
            margin-bottom: 12px;
            align-self: flex-start;
            border: 1px solid rgba(220, 38, 38, 0.15);
        }

        .card-modern .card-title {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .card-modern .card-desc {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.7;
            flex: 1;
        }

        .card-modern .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-top: 16px;
            font-size: 0.82rem;
            color: var(--text-light);
            border-top: 1px solid var(--border);
            padding-top: 14px;
        }
        .card-modern .card-meta i {
            margin-right: 4px;
        }

        /* ===== 特色板块 ===== */
        .features-grid .feature-card {
            text-align: center;
            padding: 36px 24px 32px;
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            transition: all var(--transition);
            height: 100%;
        }

        .features-grid .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: var(--accent);
        }

        .features-grid .feature-icon {
            width: 64px;
            height: 64px;
            border-radius: 16px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 1.6rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            transition: all var(--transition);
        }

        .features-grid .feature-card:hover .feature-icon {
            background: var(--primary);
            color: #fff;
            transform: scale(1.05);
        }

        .features-grid .feature-title {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .features-grid .feature-desc {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ===== 赛事列表 ===== */
        .race-list .race-item {
            display: flex;
            align-items: center;
            gap: 20px;
            padding: 20px 24px;
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            transition: all var(--transition);
            margin-bottom: 12px;
        }

        .race-list .race-item:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow);
            transform: translateX(4px);
        }

        .race-list .race-badge {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            flex-shrink: 0;
        }

        .race-list .race-info {
            flex: 1;
        }
        .race-list .race-info h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 2px;
        }
        .race-list .race-info p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin: 0;
        }

        .race-list .race-status {
            font-size: 0.78rem;
            font-weight: 600;
            padding: 4px 16px;
            border-radius: 20px;
            background: #dcfce7;
            color: #16a34a;
            flex-shrink: 0;
        }
        .race-list .race-status.hot {
            background: #fef2f2;
            color: var(--primary);
        }
        .race-list .race-status.upcoming {
            background: #fefce8;
            color: #ca8a04;
        }

        /* ===== 数据统计 ===== */
        .stats-grid .stat-card {
            text-align: center;
            padding: 32px 20px;
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            transition: all var(--transition);
        }

        .stats-grid .stat-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow);
        }

        .stats-grid .stat-number {
            font-size: 2.8rem;
            font-weight: 900;
            color: var(--primary);
            line-height: 1.2;
        }
        .stats-grid .stat-number .stat-plus {
            color: var(--accent);
        }
        .stats-grid .stat-label {
            font-size: 0.95rem;
            color: var(--text-secondary);
            margin-top: 6px;
        }

        /* ===== FAQ ===== */
        .faq-list .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color var(--transition);
        }
        .faq-list .faq-item:hover {
            border-color: var(--primary);
        }

        .faq-list .faq-question {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-primary);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            font-family: inherit;
            transition: background var(--transition);
        }
        .faq-list .faq-question:hover {
            background: rgba(220, 38, 38, 0.03);
        }
        .faq-list .faq-question i {
            color: var(--primary);
            transition: transform var(--transition);
            font-size: 0.9rem;
        }
        .faq-list .faq-question[aria-expanded="true"] i {
            transform: rotate(180deg);
        }

        .faq-list .faq-answer {
            padding: 0 24px 18px;
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.8;
            display: none;
        }
        .faq-list .faq-answer.open {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--bg-sidebar) 0%, #1a1a2e 100%);
            border-radius: var(--radius);
            padding: 60px 48px;
            color: #fff;
            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 .cta-content {
            position: relative;
            z-index: 2;
        }

        .cta-section h2 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 12px;
        }
        .cta-section p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.75);
            max-width: 560px;
            margin: 0 auto 28px;
        }

        .cta-section .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 44px;
            font-size: 1.05rem;
            font-weight: 700;
            border-radius: 50px;
            background: var(--primary);
            color: #fff;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            text-decoration: none;
        }
        .cta-section .btn-cta:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(220, 38, 38, 0.35);
        }

        /* ===== 按钮基础 ===== */
        .btn-modern {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            font-size: 0.95rem;
            font-weight: 600;
            border-radius: 50px;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            text-decoration: none;
            background: var(--primary);
            color: #fff;
        }
        .btn-modern:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(220, 38, 38, 0.3);
            color: #fff;
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        /* ===== 页脚 ===== */
        .app-footer {
            background: var(--bg-sidebar);
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 40px 30px;
            margin-top: auto;
        }

        .app-footer .container {
            max-width: 1200px;
            margin: 0 auto;
        }

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

        .app-footer .footer-brand .logo-text {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
        }
        .app-footer .footer-brand .logo-text i {
            color: var(--primary);
        }
        .app-footer .footer-brand p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.55);
            line-height: 1.8;
            max-width: 340px;
        }

        .app-footer .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        .app-footer .footer-col a {
            display: block;
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.55);
            margin-bottom: 10px;
            transition: color var(--transition);
            text-decoration: none;
        }
        .app-footer .footer-col a:hover {
            color: var(--primary);
        }

        .app-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
        }
        .app-footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
            font-size: 1.2rem;
            transition: color var(--transition);
        }
        .app-footer .footer-bottom a:hover {
            color: var(--primary);
        }

        /* ===== 响应式 ===== */

        /* 平板及以下 */
        @media (max-width: 1024px) {
            .sidebar {
                transform: translateX(-100%);
            }
            .sidebar.open {
                transform: translateX(0);
            }
            .sidebar-overlay.open {
                display: block;
            }

            .topbar {
                display: flex;
            }

            .main-content {
                margin-left: 0;
            }

            .page-section {
                padding: 60px 24px;
            }

            .category-banner {
                padding: 80px 24px 60px;
                min-height: 280px;
            }
            .category-banner h1 {
                font-size: 2.2rem;
            }

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

            .stats-grid .stat-number {
                font-size: 2.2rem;
            }
        }

        /* 手机 */
        @media (max-width: 640px) {
            .page-section {
                padding: 40px 16px;
            }
            .page-section.wide {
                padding-left: 16px;
                padding-right: 16px;
            }

            .category-banner {
                padding: 60px 16px 40px;
                min-height: 220px;
            }
            .category-banner h1 {
                font-size: 1.6rem;
            }
            .category-banner .banner-desc {
                font-size: 0.95rem;
            }
            .category-banner .banner-stat {
                gap: 20px;
            }
            .category-banner .banner-stat .stat-num {
                font-size: 1.5rem;
            }

            .section-title {
                font-size: 1.5rem;
            }

            .app-footer {
                padding: 40px 16px 24px;
            }
            .app-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .cta-section {
                padding: 36px 20px;
            }
            .cta-section h2 {
                font-size: 1.4rem;
            }
            .cta-section .btn-cta {
                padding: 14px 28px;
                font-size: 0.95rem;
            }

            .race-list .race-item {
                flex-wrap: wrap;
                gap: 12px;
            }
            .race-list .race-status {
                font-size: 0.7rem;
                padding: 2px 12px;
            }

            .stats-grid .stat-number {
                font-size: 1.8rem;
            }

            .card-modern .card-body {
                padding: 16px;
            }

            .features-grid .feature-card {
                padding: 24px 16px;
            }

            .topbar .logo-text {
                font-size: 0.95rem;
            }
        }

        /* 小手机 */
        @media (max-width: 400px) {
            .category-banner h1 {
                font-size: 1.3rem;
            }
            .category-banner .banner-stat {
                flex-direction: column;
                gap: 12px;
            }
            .section-title {
                font-size: 1.2rem;
            }
        }

        /* ===== Foundation 网格覆盖 ===== */
        .grid-container.full {
            max-width: 100%;
            padding: 0;
        }
        .grid-x>.cell {
            padding: 0;
        }
        .grid-padding-x>.cell {
            padding-left: 12px;
            padding-right: 12px;
        }
        .grid-margin-x {
            margin-left: -12px;
            margin-right: -12px;
        }