/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a2332;
            --primary-light: #2a3650;
            --primary-dark: #0f1624;
            --accent: #e8a838;
            --accent-hover: #d4952a;
            --accent-light: #f5d98a;
            --secondary: #f97316;
            --secondary-hover: #ea580c;
            --bg-body: #f8f9fc;
            --bg-card: #ffffff;
            --bg-dark: #0f1624;
            --bg-section-alt: #f1f3f8;
            --text-primary: #1a2332;
            --text-secondary: #4a5568;
            --text-muted: #8896ab;
            --text-light: #ffffff;
            --text-accent: #e8a838;
            --border: #e2e6ef;
            --border-light: #f0f2f7;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
            --shadow-md: 0 6px 24px rgba(0,0,0,0.06);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.08);
            --shadow-xl: 0 24px 60px rgba(0,0,0,0.12);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --space-xs: 4px;
            --space-sm: 8px;
            --space-md: 16px;
            --space-lg: 24px;
            --space-xl: 32px;
            --space-2xl: 48px;
            --space-3xl: 64px;
            --space-4xl: 80px;
            --max-width: 1200px;
            --header-height: 72px;
        }

        /* ===== 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: 1.65;
            color: var(--text-primary);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: inherit; text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--accent); }
        button, input, select, textarea { font-family: inherit; font-size: inherit; line-height: inherit; }
        button { cursor: pointer; border: none; background: none; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.3; color: var(--text-primary); }
        h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
        h2 { font-size: clamp(1.5rem, 3.5vw, 2.2rem); }
        h3 { font-size: clamp(1.15rem, 2.2vw, 1.45rem); }
        h4 { font-size: 1.1rem; }
        p { margin-bottom: 1em; color: var(--text-secondary); }
        p:last-child { margin-bottom: 0; }
        ::selection { background: var(--accent); color: #fff; }
        :focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

        /* ===== Container ===== */
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--space-lg);
        }
        @media (max-width: 768px) {
            .container { padding: 0 var(--space-md); }
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(26, 35, 50, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255,255,255,0.06);
            transition: background var(--transition);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--text-light);
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo .logo-icon {
            width: 34px;
            height: 34px;
            background: linear-gradient(135deg, var(--accent), var(--secondary));
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.15rem;
            color: #fff;
            font-weight: 900;
        }
        .logo span { color: var(--accent); }

        /* 主导航 */
        .main-nav {
            display: flex;
            align-items: center;
            gap: var(--space-lg);
        }
        .main-nav a {
            color: rgba(255,255,255,0.75);
            font-size: 0.92rem;
            font-weight: 500;
            padding: 6px 0;
            position: relative;
            transition: color var(--transition);
            white-space: nowrap;
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent);
            transition: width var(--transition);
            border-radius: 2px;
        }
        .main-nav a:hover { color: var(--text-light); }
        .main-nav a:hover::after { width: 100%; }
        .main-nav a.active { color: var(--accent); }
        .main-nav a.active::after { width: 100%; background: var(--accent); }

        /* 搜索框 */
        .search-wrap {
            display: flex;
            align-items: center;
            background: rgba(255,255,255,0.08);
            border: 1px solid rgba(255,255,255,0.1);
            border-radius: 24px;
            padding: 0 16px;
            transition: all var(--transition);
            flex: 0 1 260px;
            margin: 0 var(--space-md);
        }
        .search-wrap:focus-within {
            background: rgba(255,255,255,0.14);
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(232,168,56,0.15);
        }
        .search-wrap i {
            color: rgba(255,255,255,0.4);
            font-size: 0.9rem;
            margin-right: 10px;
        }
        .search-wrap input {
            background: transparent;
            border: none;
            padding: 10px 0;
            color: var(--text-light);
            width: 100%;
            font-size: 0.9rem;
            outline: none;
        }
        .search-wrap input::placeholder { color: rgba(255,255,255,0.35); }

        /* 移动端菜单按钮 */
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 6px;
            background: none;
            border: none;
            cursor: pointer;
        }
        .menu-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--text-light);
            border-radius: 2px;
            transition: all var(--transition);
        }
        .menu-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
        .menu-toggle.active span:nth-child(2) { opacity: 0; }
        .menu-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

        /* 移动端导航面板 */
        .mobile-nav {
            display: none;
            position: fixed;
            top: var(--header-height);
            left: 0;
            right: 0;
            background: var(--primary-dark);
            padding: var(--space-lg) var(--space-md);
            border-bottom: 1px solid rgba(255,255,255,0.06);
            box-shadow: var(--shadow-lg);
            z-index: 999;
            flex-direction: column;
            gap: var(--space-sm);
            transform: translateY(-10px);
            opacity: 0;
            transition: all 0.3s ease;
            pointer-events: none;
        }
        .mobile-nav.open {
            transform: translateY(0);
            opacity: 1;
            pointer-events: auto;
        }
        .mobile-nav a {
            display: block;
            padding: 12px 16px;
            color: rgba(255,255,255,0.75);
            font-size: 1rem;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
        }
        .mobile-nav a:hover, .mobile-nav a.active {
            background: rgba(255,255,255,0.06);
            color: var(--accent);
        }
        .mobile-nav .search-wrap {
            margin: var(--space-sm) 0;
            flex: none;
            width: 100%;
        }

        @media (max-width: 900px) {
            .main-nav { display: none; }
            .search-wrap.desktop { display: none; }
            .menu-toggle { display: flex; }
            .mobile-nav { display: flex; }
        }
        @media (min-width: 901px) {
            .mobile-nav { display: none !important; }
            .search-wrap.mobile { display: none !important; }
        }

        /* ===== Button 系统 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            font-size: 0.95rem;
            font-weight: 600;
            border-radius: 30px;
            transition: all var(--transition);
            border: 2px solid transparent;
            white-space: nowrap;
            line-height: 1.4;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--accent), var(--secondary));
            color: #fff;
            border-color: transparent;
            box-shadow: 0 4px 16px rgba(232,168,56,0.3);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(232,168,56,0.4);
            color: #fff;
        }
        .btn-primary:active { transform: translateY(0); }
        .btn-outline {
            background: transparent;
            color: var(--text-light);
            border-color: rgba(255,255,255,0.3);
        }
        .btn-outline:hover {
            border-color: var(--accent);
            color: var(--accent);
            transform: translateY(-2px);
        }
        .btn-outline-dark {
            background: transparent;
            color: var(--text-primary);
            border-color: var(--border);
        }
        .btn-outline-dark:hover {
            border-color: var(--accent);
            color: var(--accent);
            transform: translateY(-2px);
            box-shadow: var(--shadow-sm);
        }
        .btn-sm { padding: 8px 20px; font-size: 0.85rem; }
        .btn-lg { padding: 16px 36px; font-size: 1.05rem; }

        /* ===== 标签 / 徽章 ===== */
        .badge {
            display: inline-block;
            padding: 4px 14px;
            font-size: 0.78rem;
            font-weight: 600;
            border-radius: 20px;
            background: rgba(232,168,56,0.12);
            color: var(--accent);
            border: 1px solid rgba(232,168,56,0.2);
        }
        .badge-hot {
            background: rgba(249,115,22,0.12);
            color: var(--secondary);
            border-color: rgba(249,115,22,0.2);
        }
        .badge-new {
            background: rgba(16,185,129,0.12);
            color: #10b981;
            border-color: rgba(16,185,129,0.2);
        }
        .badge-sm { padding: 2px 10px; font-size: 0.7rem; }

        /* ===== Hero 首屏 ===== */
        .hero {
            min-height: 100vh;
            background: linear-gradient(160deg, var(--primary-dark) 0%, var(--primary) 40%, #1e2d4a 100%);
            display: flex;
            align-items: center;
            position: relative;
            overflow: hidden;
            padding: calc(var(--header-height) + var(--space-2xl)) 0 var(--space-3xl);
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(232,168,56,0.08) 0%, transparent 60%),
                        radial-gradient(ellipse at 70% 80%, rgba(249,115,22,0.06) 0%, transparent 50%);
            pointer-events: none;
        }
        .hero-pattern {
            position: absolute;
            inset: 0;
            background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
            opacity: 0.5;
        }
        .hero .container {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--space-2xl);
            align-items: center;
        }
        .hero-content { max-width: 600px; }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 18px;
            background: rgba(232,168,56,0.12);
            border: 1px solid rgba(232,168,56,0.2);
            border-radius: 30px;
            color: var(--accent);
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: var(--space-lg);
        }
        .hero-badge i { font-size: 0.75rem; }
        .hero h1 {
            color: var(--text-light);
            font-size: clamp(2.2rem, 5.5vw, 3.6rem);
            font-weight: 800;
            line-height: 1.15;
            margin-bottom: var(--space-lg);
        }
        .hero h1 span { color: var(--accent); }
        .hero p {
            color: rgba(255,255,255,0.65);
            font-size: 1.1rem;
            max-width: 520px;
            margin-bottom: var(--space-xl);
            line-height: 1.7;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: var(--space-md);
            align-items: center;
        }
        .hero-stats {
            display: flex;
            gap: var(--space-xl);
            margin-top: var(--space-2xl);
            padding-top: var(--space-xl);
            border-top: 1px solid rgba(255,255,255,0.06);
        }
        .hero-stat h3 {
            color: var(--text-light);
            font-size: 1.6rem;
            font-weight: 800;
        }
        .hero-stat h3 i { color: var(--accent); font-size: 1.2rem; margin-right: 4px; }
        .hero-stat p { font-size: 0.85rem; color: rgba(255,255,255,0.45); margin: 0; }

        .hero-visual {
            display: flex;
            justify-content: center;
            align-items: center;
            position: relative;
        }
        .hero-card-showcase {
            background: rgba(255,255,255,0.04);
            border: 1px solid rgba(255,255,255,0.06);
            border-radius: var(--radius-lg);
            padding: var(--space-xl);
            width: 100%;
            max-width: 440px;
            backdrop-filter: blur(8px);
        }
        .hero-card-showcase .list-item {
            display: flex;
            align-items: center;
            gap: var(--space-md);
            padding: var(--space-md) 0;
            border-bottom: 1px solid rgba(255,255,255,0.04);
        }
        .hero-card-showcase .list-item:last-child { border-bottom: none; }
        .hero-card-showcase .list-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: rgba(232,168,56,0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        .hero-card-showcase .list-text { flex: 1; }
        .hero-card-showcase .list-text strong { color: var(--text-light); font-size: 0.95rem; }
        .hero-card-showcase .list-text span { color: rgba(255,255,255,0.4); font-size: 0.82rem; }
        .hero-card-showcase .list-tag {
            padding: 4px 12px;
            border-radius: 16px;
            font-size: 0.72rem;
            font-weight: 600;
            background: rgba(232,168,56,0.15);
            color: var(--accent);
        }

        @media (max-width: 900px) {
            .hero .container { grid-template-columns: 1fr; gap: var(--space-xl); }
            .hero-content { max-width: 100%; }
            .hero p { max-width: 100%; }
            .hero-stats { flex-wrap: wrap; gap: var(--space-md); }
            .hero-visual { display: none; }
            .hero { min-height: auto; padding-top: calc(var(--header-height) + var(--space-xl)); }
        }

        /* ===== Section 通用 ===== */
        .section {
            padding: var(--space-4xl) 0;
        }
        .section-alt {
            background: var(--bg-section-alt);
        }
        .section-dark {
            background: var(--bg-dark);
            color: var(--text-light);
        }
        .section-dark h2, .section-dark h3, .section-dark .section-subtitle { color: var(--text-light); }
        .section-dark p { color: rgba(255,255,255,0.6); }
        .section-header {
            text-align: center;
            margin-bottom: var(--space-2xl);
        }
        .section-header h2 {
            margin-bottom: var(--space-md);
            position: relative;
            display: inline-block;
        }
        .section-header h2::after {
            content: '';
            display: block;
            width: 50px;
            height: 3px;
            background: linear-gradient(90deg, var(--accent), var(--secondary));
            border-radius: 2px;
            margin: var(--space-md) auto 0;
        }
        .section-subtitle {
            color: var(--text-muted);
            font-size: 1.05rem;
            max-width: 600px;
            margin: 0 auto;
        }

        /* ===== Card 卡片系统 ===== */
        .card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            overflow: hidden;
        }
        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: rgba(232,168,56,0.15);
        }
        .card-body { padding: var(--space-lg); }
        .card-img { width: 100%; aspect-ratio: 16/10; object-fit: cover; border-radius: var(--radius-md) var(--radius-md) 0 0; }
        .card-title { font-size: 1.1rem; font-weight: 700; margin-bottom: var(--space-sm); }
        .card-text { color: var(--text-secondary); font-size: 0.92rem; line-height: 1.6; }
        .card-meta { display: flex; align-items: center; gap: var(--space-md); font-size: 0.82rem; color: var(--text-muted); margin-top: var(--space-md); }
        .card-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: var(--space-md); }

        /* 网格 */
        .grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-lg); }
        .grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: var(--space-lg); }
        .grid-4 { display: grid; grid-template-columns: 1fr 1fr 1fr 1fr; gap: var(--space-lg); }
        @media (max-width: 900px) {
            .grid-3, .grid-4 { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 600px) {
            .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
        }

        /* ===== 特色 / 优势板块 ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: var(--space-lg);
        }
        .feature-card {
            text-align: center;
            padding: var(--space-xl) var(--space-lg);
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .feature-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-6px);
            border-color: rgba(232,168,56,0.15);
        }
        .feature-icon {
            width: 60px;
            height: 60px;
            border-radius: 16px;
            background: linear-gradient(135deg, rgba(232,168,56,0.1), rgba(249,115,22,0.08));
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto var(--space-md);
            font-size: 1.6rem;
            color: var(--accent);
        }
        .feature-card h3 { font-size: 1.1rem; margin-bottom: var(--space-sm); }
        .feature-card p { font-size: 0.9rem; color: var(--text-muted); margin: 0; }

        /* ===== 分类入口 ===== */
        .cat-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--space-lg);
        }
        .cat-card {
            position: relative;
            border-radius: var(--radius-md);
            overflow: hidden;
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            padding: var(--space-xl);
            text-align: center;
        }
        .cat-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: var(--accent);
        }
        .cat-card .cat-icon {
            width: 56px;
            height: 56px;
            border-radius: 14px;
            background: linear-gradient(135deg, var(--accent-light), rgba(232,168,56,0.08));
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto var(--space-md);
            font-size: 1.5rem;
            color: var(--accent);
        }
        .cat-card h3 { font-size: 1.15rem; margin-bottom: var(--space-xs); }
        .cat-card p { font-size: 0.88rem; color: var(--text-muted); margin: 0; }
        .cat-card .badge { margin-top: var(--space-md); }
        .cat-card .cat-link {
            position: absolute;
            inset: 0;
            border-radius: var(--radius-md);
            z-index: 1;
        }
        @media (max-width: 768px) {
            .cat-grid { grid-template-columns: 1fr; }
        }

        /* ===== 资讯列表 ===== */
        .post-list { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-lg); }
        .post-card {
            display: flex;
            gap: var(--space-md);
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: var(--space-lg);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .post-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: rgba(232,168,56,0.12);
        }
        .post-card .post-thumb {
            width: 120px;
            min-height: 90px;
            border-radius: var(--radius-sm);
            background: var(--bg-section-alt);
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            font-size: 1.8rem;
        }
        .post-card .post-info { flex: 1; min-width: 0; }
        .post-card .post-info h4 { font-size: 1rem; font-weight: 600; margin-bottom: 6px; line-height: 1.4; }
        .post-card .post-info h4 a { color: var(--text-primary); }
        .post-card .post-info h4 a:hover { color: var(--accent); }
        .post-card .post-info p { font-size: 0.85rem; color: var(--text-muted); margin: 0; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .post-card .post-meta { display: flex; align-items: center; gap: var(--space-md); font-size: 0.78rem; color: var(--text-muted); margin-top: var(--space-sm); }
        .post-card .post-meta i { margin-right: 3px; }
        @media (max-width: 768px) {
            .post-list { grid-template-columns: 1fr; }
            .post-card { flex-direction: column; }
            .post-card .post-thumb { width: 100%; height: 140px; }
        }

        /* ===== 数据统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--space-lg);
            text-align: center;
        }
        .stat-item { padding: var(--space-lg); }
        .stat-item .stat-number {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
        }
        .stat-item .stat-label {
            font-size: 0.92rem;
            color: rgba(255,255,255,0.55);
            margin-top: var(--space-sm);
        }
        @media (max-width: 768px) {
            .stats-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 480px) {
            .stats-grid { grid-template-columns: 1fr; }
        }

        /* ===== 流程/步骤 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--space-xl);
            counter-reset: step;
        }
        .step-card {
            text-align: center;
            padding: var(--space-xl) var(--space-lg);
            position: relative;
        }
        .step-card::before {
            counter-increment: step;
            content: counter(step);
            position: absolute;
            top: -8px;
            left: 50%;
            transform: translateX(-50%);
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent), var(--secondary));
            color: #fff;
            font-weight: 800;
            font-size: 1.1rem;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .step-card .step-icon {
            width: 64px;
            height: 64px;
            border-radius: 18px;
            background: rgba(232,168,56,0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: var(--space-xl) auto var(--space-md);
            font-size: 1.6rem;
            color: var(--accent);
        }
        .step-card h3 { font-size: 1.1rem; margin-bottom: var(--space-sm); }
        .step-card p { font-size: 0.88rem; color: var(--text-muted); margin: 0; }
        @media (max-width: 768px) {
            .steps-grid { grid-template-columns: 1fr; max-width: 400px; margin: 0 auto; }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 720px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: var(--space-sm);
        }
        .faq-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: all var(--transition);
            background: var(--bg-card);
        }
        .faq-item:hover { border-color: rgba(232,168,56,0.2); }
        .faq-question {
            padding: var(--space-md) var(--space-lg);
            font-weight: 600;
            font-size: 1rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            background: none;
            width: 100%;
            text-align: left;
            color: var(--text-primary);
            border: none;
            transition: background var(--transition);
        }
        .faq-question:hover { background: rgba(0,0,0,0.015); }
        .faq-question i { color: var(--accent); transition: transform var(--transition); font-size: 0.85rem; }
        .faq-item.open .faq-question i { transform: rotate(180deg); }
        .faq-answer {
            padding: 0 var(--space-lg) var(--space-md);
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-answer { display: block; }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(160deg, var(--primary-dark), var(--primary));
            padding: var(--space-3xl) 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, rgba(232,168,56,0.06) 0%, transparent 70%);
        }
        .cta-section .container { position: relative; z-index: 2; }
        .cta-section h2 {
            color: var(--text-light);
            font-size: clamp(1.6rem, 3.5vw, 2.4rem);
            margin-bottom: var(--space-md);
        }
        .cta-section p {
            color: rgba(255,255,255,0.6);
            max-width: 520px;
            margin: 0 auto var(--space-xl);
            font-size: 1.05rem;
        }
        .cta-section .btn-primary {
            font-size: 1.05rem;
            padding: 16px 40px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255,255,255,0.6);
            padding: var(--space-3xl) 0 var(--space-lg);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--space-xl);
            margin-bottom: var(--space-2xl);
        }
        .footer-brand .logo { margin-bottom: var(--space-md); }
        .footer-brand p { font-size: 0.88rem; max-width: 300px; color: rgba(255,255,255,0.45); }
        .footer-col h4 {
            color: var(--text-light);
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: var(--space-md);
        }
        .footer-col a {
            display: block;
            padding: 4px 0;
            font-size: 0.88rem;
            color: rgba(255,255,255,0.45);
            transition: all var(--transition);
        }
        .footer-col a:hover { color: var(--accent); padding-left: 4px; }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.06);
            padding-top: var(--space-lg);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: var(--space-md);
            font-size: 0.84rem;
            color: rgba(255,255,255,0.3);
        }
        .footer-bottom a { color: rgba(255,255,255,0.3); }
        .footer-bottom a:hover { color: var(--accent); }
        .footer-social { display: flex; gap: var(--space-sm); }
        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255,255,255,0.04);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255,255,255,0.35);
            font-size: 0.9rem;
            transition: all var(--transition);
        }
        .footer-social a:hover {
            background: var(--accent);
            color: #fff;
            transform: translateY(-2px);
        }
        @media (max-width: 768px) {
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .footer-brand { grid-column: 1 / -1; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }
        @media (max-width: 480px) {
            .footer-grid { grid-template-columns: 1fr; }
        }

        /* ===== 其他辅助 ===== */
        .text-center { text-align: center; }
        .mt-2xl { margin-top: var(--space-2xl); }
        .mb-lg { margin-bottom: var(--space-lg); }
        .gap-md { gap: var(--space-md); }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .empty-state {
            text-align: center;
            padding: var(--space-2xl) var(--space-lg);
            color: var(--text-muted);
            background: var(--bg-section-alt);
            border-radius: var(--radius-md);
            border: 1px dashed var(--border);
        }
        .empty-state i { font-size: 2.4rem; margin-bottom: var(--space-md); opacity: 0.4; }

        /* ===== 滚动条美化 ===== */
        ::-webkit-scrollbar { width: 8px; }
        ::-webkit-scrollbar-track { background: var(--bg-body); }
        ::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
        ::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

        /* ===== 动画辅助 ===== */
        @keyframes fadeUp {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .fade-up { animation: fadeUp 0.6s ease both; }
        .fade-up-1 { animation-delay: 0.1s; }
        .fade-up-2 { animation-delay: 0.2s; }
        .fade-up-3 { animation-delay: 0.3s; }
        .fade-up-4 { animation-delay: 0.4s; }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #e23636;
            --primary-dark: #b82828;
            --primary-light: #ff5a5a;
            --secondary: #1a1a2e;
            --secondary-light: #2d2d44;
            --accent: #f5a623;
            --accent-dark: #d4891a;
            --bg-body: #0d0d1a;
            --bg-card: #181830;
            --bg-card-hover: #1f1f3a;
            --bg-section: #111128;
            --bg-footer: #0a0a18;
            --text-primary: #f0f0f5;
            --text-secondary: #b0b0c8;
            --text-muted: #7777a0;
            --border-color: #2a2a4a;
            --border-light: #3a3a5a;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
            --shadow-md: 0 8px 24px rgba(0,0,0,0.4);
            --shadow-lg: 0 16px 48px rgba(0,0,0,0.5);
            --shadow-glow: 0 0 30px rgba(226,54,54,0.15);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --header-height: 72px;
        }

        /* ===== 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-primary);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: var(--primary-light); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--accent); }
        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; color: var(--text-primary); }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        @media (max-width: 768px) {
            .container { padding-left: 16px; padding-right: 16px; }
        }

        /* ===== Header & Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(13, 13, 26, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }
        .logo:hover { color: var(--text-primary); }
        .logo .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-sm);
            font-size: 1.1rem;
            font-weight: 800;
        }
        .logo span:last-child { color: var(--primary-light); font-weight: 700; }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            margin: 0 16px;
        }
        .main-nav a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            color: var(--text-secondary);
            font-size: 0.92rem;
            font-weight: 500;
            transition: var(--transition);
            position: relative;
            white-space: nowrap;
        }
        .main-nav a:hover { color: var(--text-primary); background: rgba(255,255,255,0.06); }
        .main-nav a.active {
            color: #fff;
            background: var(--primary);
            box-shadow: 0 4px 16px rgba(226,54,54,0.3);
        }
        .main-nav a.active::after { display: none; }

        .search-wrap {
            display: flex;
            align-items: center;
            background: rgba(255,255,255,0.06);
            border: 1px solid var(--border-color);
            border-radius: 24px;
            padding: 0 16px;
            gap: 10px;
            transition: var(--transition);
            min-width: 200px;
        }
        .search-wrap:focus-within {
            border-color: var(--primary);
            background: rgba(226,54,54,0.08);
            box-shadow: 0 0 0 3px rgba(226,54,54,0.15);
        }
        .search-wrap i { color: var(--text-muted); font-size: 0.95rem; }
        .search-wrap input {
            background: transparent;
            border: none;
            outline: none;
            color: var(--text-primary);
            padding: 10px 0;
            font-size: 0.9rem;
            width: 100%;
        }
        .search-wrap input::placeholder { color: var(--text-muted); }

        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            background: rgba(255,255,255,0.05);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-color);
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
        }
        .menu-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: var(--transition);
        }
        .menu-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
        .menu-toggle.active span:nth-child(2) { opacity: 0; }
        .menu-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

        @media (max-width: 1024px) {
            .search-wrap.desktop { display: none; }
            .main-nav { gap: 2px; }
            .main-nav a { padding: 6px 12px; font-size: 0.85rem; }
        }
        @media (max-width: 768px) {
            .menu-toggle { display: flex; }
            .main-nav {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(13,13,26,0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 16px 24px 24px;
                gap: 6px;
                border-bottom: 1px solid var(--border-color);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                margin: 0;
                box-shadow: var(--shadow-lg);
            }
            .main-nav.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
            .main-nav a { width: 100%; padding: 12px 16px; font-size: 1rem; }
            .main-nav a.active { background: var(--primary); color: #fff; }
            .search-wrap.mobile { display: flex; margin-top: 8px; }
        }
        @media (min-width: 769px) {
            .search-wrap.mobile { display: none; }
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb-wrap {
            padding-top: calc(var(--header-height) + 20px);
            padding-bottom: 12px;
            background: var(--bg-section);
            border-bottom: 1px solid var(--border-color);
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            font-size: 0.88rem;
            color: var(--text-muted);
        }
        .breadcrumb a { color: var(--text-secondary); }
        .breadcrumb a:hover { color: var(--primary-light); }
        .breadcrumb span { color: var(--text-muted); }
        .breadcrumb .sep { color: var(--border-light); font-size: 0.7rem; }

        /* ===== Article Main ===== */
        .article-main {
            padding: 40px 0 60px;
            background: var(--bg-body);
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
            align-items: start;
        }
        .article-body { min-width: 0; }
        .article-header {
            margin-bottom: 32px;
            padding-bottom: 24px;
            border-bottom: 1px solid var(--border-color);
        }
        .article-header .category-badge {
            display: inline-block;
            padding: 4px 16px;
            background: var(--primary);
            color: #fff;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .article-header h1 {
            font-size: 2.2rem;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
            color: var(--text-primary);
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            font-size: 0.88rem;
            color: var(--text-muted);
        }
        .article-meta i { margin-right: 6px; color: var(--primary-light); }
        .article-meta span { display: inline-flex; align-items: center; }

        .article-content {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text-secondary);
        }
        .article-content p { margin-bottom: 1.4em; }
        .article-content h2 { font-size: 1.6rem; margin: 1.6em 0 0.6em; color: var(--text-primary); }
        .article-content h3 { font-size: 1.3rem; margin: 1.4em 0 0.5em; color: var(--text-primary); }
        .article-content ul, .article-content ol { margin: 1em 0; padding-left: 1.6em; }
        .article-content li { margin-bottom: 0.5em; list-style: disc; }
        .article-content a { color: var(--primary-light); text-decoration: underline; }
        .article-content a:hover { color: var(--accent); }
        .article-content blockquote {
            border-left: 4px solid var(--primary);
            padding: 16px 20px;
            margin: 1.6em 0;
            background: var(--bg-card);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
            font-style: italic;
        }
        .article-content img {
            border-radius: var(--radius-md);
            margin: 1.6em 0;
            box-shadow: var(--shadow-md);
        }
        .article-content .content-empty {
            padding: 60px 20px;
            text-align: center;
            color: var(--text-muted);
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px dashed var(--border-color);
        }
        .article-content .content-empty i { font-size: 2.4rem; margin-bottom: 16px; display: block; }
        .article-content .content-empty a { display: inline-block; margin-top: 12px; color: var(--primary-light); }

        /* ===== Sidebar ===== */
        .article-sidebar { min-width: 0; }
        .sidebar-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            padding: 24px;
            margin-bottom: 24px;
        }
        .sidebar-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--primary);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card h3 i { color: var(--primary-light); }
        .sidebar-list { display: flex; flex-direction: column; gap: 12px; }
        .sidebar-list a {
            display: flex;
            align-items: center;
            gap: 12px;
            color: var(--text-secondary);
            font-size: 0.92rem;
            padding: 8px 12px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            background: transparent;
        }
        .sidebar-list a:hover { background: rgba(255,255,255,0.04); color: var(--text-primary); }
        .sidebar-list a .num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            background: var(--secondary-light);
            border-radius: 50%;
            font-size: 0.75rem;
            font-weight: 700;
            color: var(--text-muted);
            flex-shrink: 0;
        }
        .sidebar-list a .num.top { background: var(--primary); color: #fff; }
        .sidebar-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .sidebar-tags a {
            display: inline-block;
            padding: 6px 14px;
            background: var(--secondary-light);
            border-radius: 20px;
            font-size: 0.8rem;
            color: var(--text-secondary);
            transition: var(--transition);
            border: 1px solid transparent;
        }
        .sidebar-tags a:hover { border-color: var(--primary); color: var(--text-primary); background: rgba(226,54,54,0.1); }
        .sidebar-cta {
            text-align: center;
        }
        .sidebar-cta p { color: var(--text-secondary); font-size: 0.9rem; margin-bottom: 16px; }
        .sidebar-cta .btn { width: 100%; }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-md);
            font-size: 0.95rem;
            font-weight: 600;
            transition: var(--transition);
            border: none;
            cursor: pointer;
            text-decoration: none;
            line-height: 1.2;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 16px rgba(226,54,54,0.3);
        }
        .btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(226,54,54,0.4); color: #fff; }
        .btn-secondary {
            background: var(--secondary-light);
            color: var(--text-primary);
            border: 1px solid var(--border-color);
        }
        .btn-secondary:hover { background: var(--border-color); transform: translateY(-2px); color: var(--text-primary); }
        .btn-outline {
            background: transparent;
            color: var(--primary-light);
            border: 1.5px solid var(--primary);
        }
        .btn-outline:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }

        /* ===== CTA ===== */
        .section-cta {
            padding: 60px 0;
            background: var(--bg-section);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }
        .cta-box {
            background: linear-gradient(135deg, var(--primary-dark), var(--secondary));
            border-radius: var(--radius-lg);
            padding: 48px 56px;
            text-align: center;
            box-shadow: var(--shadow-lg);
            position: relative;
            overflow: hidden;
        }
        .cta-box::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle at 30% 50%, rgba(255,255,255,0.04) 0%, transparent 60%);
            pointer-events: none;
        }
        .cta-box h2 { font-size: 1.8rem; font-weight: 800; color: #fff; margin-bottom: 12px; }
        .cta-box p { color: rgba(255,255,255,0.8); font-size: 1.05rem; max-width: 600px; margin: 0 auto 24px; }
        .cta-box .btn-primary { background: #fff; color: var(--primary-dark); box-shadow: 0 4px 16px rgba(0,0,0,0.2); }
        .cta-box .btn-primary:hover { background: var(--accent); color: #fff; transform: translateY(-2px); }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-footer);
            border-top: 1px solid var(--border-color);
            padding: 56px 0 0;
            color: var(--text-secondary);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255,255,255,0.06);
        }
        .footer-brand .logo { margin-bottom: 16px; font-size: 1.3rem; }
        .footer-brand p { font-size: 0.92rem; color: var(--text-muted); line-height: 1.7; max-width: 360px; }
        .footer-col h4 { font-size: 1rem; font-weight: 700; color: var(--text-primary); margin-bottom: 16px; }
        .footer-col a { display: block; color: var(--text-muted); font-size: 0.9rem; padding: 5px 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: 20px 0;
            font-size: 0.85rem;
            color: var(--text-muted);
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-social { display: flex; gap: 12px; }
        .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255,255,255,0.04);
            color: var(--text-muted);
            font-size: 1rem;
            transition: var(--transition);
        }
        .footer-social a:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }

        @media (max-width: 1024px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
            .footer-brand { grid-column: 1 / -1; }
            .article-layout { grid-template-columns: 1fr; gap: 32px; }
        }
        @media (max-width: 768px) {
            .article-header h1 { font-size: 1.6rem; }
            .article-content { font-size: 1rem; }
            .cta-box { padding: 32px 24px; }
            .cta-box h2 { font-size: 1.4rem; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .sidebar-card { padding: 16px; }
        }
        @media (max-width: 520px) {
            .article-header h1 { font-size: 1.35rem; }
            .article-meta { flex-direction: column; gap: 8px; }
            .breadcrumb-wrap { padding-top: calc(var(--header-height) + 12px); }
            .article-main { padding: 24px 0 40px; }
        }

        /* ===== Animations ===== */
        .fade-in { animation: fadeIn 0.6s ease forwards; }
        @keyframes fadeIn { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }

        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar { width: 8px; }
        ::-webkit-scrollbar-track { background: var(--bg-body); }
        ::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 4px; }
        ::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #e81c2e;
            --primary-hover: #c41626;
            --primary-light: #fff0f1;
            --secondary: #1a1a2e;
            --secondary-hover: #2d2d4a;
            --accent: #f5a623;
            --accent-hover: #e0951a;
            --bg: #f8f9fc;
            --bg-card: #ffffff;
            --bg-dark: #0f0f1a;
            --text: #1a1a2e;
            --text-light: #6b7280;
            --text-inverse: #ffffff;
            --border: #e5e7eb;
            --border-light: #f0f0f5;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.12);
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.06);
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Noto Sans SC', sans-serif;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --header-height: 72px;
            --spacing-section: 100px;
            --spacing-section-mobile: 60px;
        }

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

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

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

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

        ul,
        ol {
            list-style: none;
        }

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

        /* ===== Header / 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-light);
            transition: box-shadow var(--transition);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-sm);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            gap: 16px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 22px;
            font-weight: 800;
            color: var(--text);
            flex-shrink: 0;
            transition: opacity var(--transition);
        }
        .logo:hover {
            opacity: 0.85;
            color: var(--text);
        }
        .logo .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-sm);
            font-size: 18px;
            font-weight: 700;
        }
        .logo span {
            color: var(--primary);
        }

        /* 主导航 */
        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .main-nav a {
            padding: 8px 18px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-light);
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            white-space: nowrap;
            position: relative;
        }
        .main-nav a:hover {
            color: var(--text);
            background: var(--primary-light);
        }
        .main-nav a.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 600;
        }
        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
        }

        /* 搜索框 */
        .search-wrap {
            display: flex;
            align-items: center;
            background: var(--border-light);
            border-radius: 100px;
            padding: 0 16px;
            gap: 8px;
            flex: 1;
            max-width: 280px;
            transition: all var(--transition);
            border: 2px solid transparent;
        }
        .search-wrap:focus-within {
            background: #fff;
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(232, 28, 46, 0.1);
        }
        .search-wrap i {
            color: var(--text-light);
            font-size: 14px;
            flex-shrink: 0;
        }
        .search-wrap input {
            background: transparent;
            border: none;
            padding: 10px 0;
            font-size: 14px;
            width: 100%;
            color: var(--text);
        }
        .search-wrap input::placeholder {
            color: var(--text-light);
        }

        /* 移动端菜单按钮 */
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }
        .menu-toggle:hover {
            background: var(--border-light);
        }
        .menu-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--text);
            border-radius: 4px;
            transition: all var(--transition);
        }
        .menu-toggle.active span:nth-child(1) {
            transform: translateY(7.5px) rotate(45deg);
        }
        .menu-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .menu-toggle.active span:nth-child(3) {
            transform: translateY(-7.5px) rotate(-45deg);
        }

        /* ===== Hero 首屏 ===== */
        .hero {
            padding: 80px 0 60px;
            background: linear-gradient(135deg, #0f0f1a 0%, #1a1a3e 50%, #0f0f1a 100%);
            color: var(--text-inverse);
            position: relative;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -30%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(232, 28, 46, 0.15) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero::after {
            content: '';
            position: absolute;
            bottom: -40%;
            left: -20%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(245, 166, 35, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero .container {
            position: relative;
            z-index: 2;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }
        .hero-content h1 {
            font-size: 48px;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 20px;
            background: linear-gradient(135deg, #fff 60%, var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-content p {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 32px;
            max-width: 520px;
            line-height: 1.8;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .hero-stats {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.08);
        }
        .hero-stat {
            text-align: center;
        }
        .hero-stat .num {
            font-size: 36px;
            font-weight: 800;
            color: var(--accent);
            display: block;
            line-height: 1.2;
        }
        .hero-stat .label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.55);
            margin-top: 4px;
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: var(--spacing-section) 0;
        }
        .section-header {
            text-align: center;
            margin-bottom: 56px;
        }
        .section-header h2 {
            font-size: 36px;
            font-weight: 800;
            color: var(--text);
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }
        .section-header p {
            font-size: 18px;
            color: var(--text-light);
            max-width: 600px;
            margin: 0 auto;
        }
        .section-header .tagline {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 14px;
            font-weight: 600;
            padding: 4px 16px;
            border-radius: 100px;
            margin-bottom: 12px;
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            font-size: 16px;
            font-weight: 600;
            border-radius: 100px;
            cursor: pointer;
            transition: all var(--transition);
            border: 2px solid transparent;
            text-align: center;
            justify-content: center;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .btn-primary:hover {
            background: var(--primary-hover);
            border-color: var(--primary-hover);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(232, 28, 46, 0.3);
        }
        .btn-outline {
            background: transparent;
            color: #fff;
            border-color: rgba(255, 255, 255, 0.3);
        }
        .btn-outline:hover {
            border-color: #fff;
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
            transform: translateY(-2px);
        }
        .btn-accent {
            background: var(--accent);
            color: #1a1a2e;
            border-color: var(--accent);
        }
        .btn-accent:hover {
            background: var(--accent-hover);
            border-color: var(--accent-hover);
            color: #1a1a2e;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(245, 166, 35, 0.3);
        }
        .btn-sm {
            padding: 8px 20px;
            font-size: 14px;
        }

        /* ===== 标签 ===== */
        .tag {
            display: inline-block;
            padding: 4px 14px;
            font-size: 12px;
            font-weight: 600;
            border-radius: 100px;
            background: var(--border-light);
            color: var(--text-light);
            transition: all var(--transition);
        }
        .tag-hot {
            background: #fee2e2;
            color: #dc2626;
        }
        .tag-new {
            background: #dbeafe;
            color: #2563eb;
        }
        .tag-upcoming {
            background: #fef3c7;
            color: #d97706;
        }
        .tag-live {
            background: #dcfce7;
            color: #16a34a;
            animation: pulse-dot 2s infinite;
        }
        @keyframes pulse-dot {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(22, 163, 74, 0.4);
            }
            50% {
                box-shadow: 0 0 0 8px rgba(22, 163, 74, 0);
            }
        }

        /* ===== 赛事卡片 ===== */
        .events-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 28px;
        }
        .event-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
            border: 1px solid var(--border-light);
            display: flex;
            flex-direction: column;
        }
        .event-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: var(--border);
        }
        .event-card .card-image {
            position: relative;
            aspect-ratio: 4 / 3;
            overflow: hidden;
            background: var(--border-light);
        }
        .event-card .card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .event-card:hover .card-image img {
            transform: scale(1.05);
        }
        .event-card .card-image .tags {
            position: absolute;
            top: 12px;
            left: 12px;
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
        }
        .event-card .card-image .overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 16px;
            background: linear-gradient(transparent, rgba(0, 0, 0, 0.7));
        }
        .event-card .card-image .overlay .date {
            color: #fff;
            font-size: 13px;
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .event-card .card-image .overlay .date i {
            font-size: 12px;
        }
        .event-card .card-body {
            padding: 20px 20px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .event-card .card-body h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
            color: var(--text);
        }
        .event-card .card-body .meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 13px;
            color: var(--text-light);
            margin-bottom: 12px;
        }
        .event-card .card-body .meta i {
            width: 14px;
            font-size: 12px;
        }
        .event-card .card-body .desc {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 16px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .event-card .card-body .card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 12px;
            border-top: 1px solid var(--border-light);
        }
        .event-card .card-body .card-footer .price {
            font-size: 16px;
            font-weight: 700;
            color: var(--primary);
        }
        .event-card .card-body .card-footer .price small {
            font-size: 12px;
            font-weight: 400;
            color: var(--text-light);
        }
        .event-card .card-body .card-footer .btn {
            font-size: 13px;
            padding: 6px 18px;
        }

        /* ===== 排行榜 ===== */
        .rank-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .rank-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--bg-card);
            padding: 16px 20px;
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .rank-item:hover {
            box-shadow: var(--shadow);
            border-color: var(--border);
            transform: translateX(4px);
        }
        .rank-item .rank-num {
            font-size: 24px;
            font-weight: 800;
            color: var(--border);
            min-width: 40px;
            text-align: center;
            font-variant-numeric: tabular-nums;
        }
        .rank-item:nth-child(1) .rank-num {
            color: var(--accent);
        }
        .rank-item:nth-child(2) .rank-num {
            color: #94a3b8;
        }
        .rank-item:nth-child(3) .rank-num {
            color: #cbd5e1;
        }
        .rank-item .rank-info {
            flex: 1;
        }
        .rank-item .rank-info h4 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 2px;
        }
        .rank-item .rank-info span {
            font-size: 13px;
            color: var(--text-light);
        }
        .rank-item .rank-hot {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 4px;
        }

        /* ===== 统计区块 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-box {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 32px 24px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .stat-box:hover {
            box-shadow: var(--shadow);
            transform: translateY(-4px);
        }
        .stat-box .icon {
            font-size: 32px;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .stat-box .num {
            font-size: 40px;
            font-weight: 800;
            color: var(--text);
            line-height: 1.2;
            display: block;
        }
        .stat-box .label {
            font-size: 15px;
            color: var(--text-light);
            margin-top: 4px;
        }

        /* ===== 流程步骤 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .step-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 32px 24px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            position: relative;
            transition: all var(--transition);
        }
        .step-card:hover {
            box-shadow: var(--shadow);
            transform: translateY(-4px);
        }
        .step-card::before {
            counter-increment: step;
            content: counter(step);
            position: absolute;
            top: -16px;
            left: 50%;
            transform: translateX(-50%);
            width: 36px;
            height: 36px;
            background: var(--primary);
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 12px rgba(232, 28, 46, 0.3);
        }
        .step-card .icon {
            font-size: 36px;
            color: var(--primary);
            margin-bottom: 16px;
            margin-top: 8px;
        }
        .step-card h4 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .step-card p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.7;
        }

        /* ===== 资讯列表 ===== */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .news-item {
            display: flex;
            gap: 20px;
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 20px 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            align-items: flex-start;
        }
        .news-item:hover {
            box-shadow: var(--shadow);
            border-color: var(--border);
            transform: translateX(4px);
        }
        .news-item .thumb {
            width: 100px;
            height: 72px;
            border-radius: var(--radius-sm);
            background: var(--border-light);
            flex-shrink: 0;
            overflow: hidden;
        }
        .news-item .thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .news-item .info {
            flex: 1;
        }
        .news-item .info h4 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 4px;
            color: var(--text);
        }
        .news-item .info p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-item .info .meta {
            display: flex;
            gap: 16px;
            margin-top: 6px;
            font-size: 12px;
            color: var(--text-light);
        }
        .news-item .info .meta i {
            margin-right: 4px;
        }

        /* ===== FAQ ===== */
        .faq-grid {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border);
        }
        .faq-item .faq-q {
            padding: 20px 24px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            font-size: 16px;
            color: var(--text);
            background: none;
            width: 100%;
            text-align: left;
            transition: background var(--transition);
        }
        .faq-item .faq-q:hover {
            background: var(--primary-light);
        }
        .faq-item .faq-q i {
            font-size: 14px;
            color: var(--text-light);
            transition: transform var(--transition);
        }
        .faq-item.active .faq-q i {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-item .faq-a {
            padding: 0 24px 20px;
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.8;
            display: none;
        }
        .faq-item.active .faq-a {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, #b01020 100%);
            color: #fff;
            padding: 80px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='rgba(255,255,255,0.04)'%3E%3Cpath d='M30 0L60 30L30 60L0 30Z'/%3E%3C/g%3E%3C/svg%3E") repeat;
            pointer-events: none;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: 40px;
            font-weight: 800;
            margin-bottom: 16px;
        }
        .cta-section p {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.8);
            max-width: 560px;
            margin: 0 auto 32px;
        }
        .cta-section .btn {
            background: #fff;
            color: var(--primary);
            border-color: #fff;
        }
        .cta-section .btn:hover {
            background: transparent;
            color: #fff;
            border-color: #fff;
            transform: translateY(-2px);
            box-shadow: none;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--secondary);
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 0;
        }
        .site-footer .logo {
            color: #fff;
            margin-bottom: 16px;
        }
        .site-footer .logo span {
            color: var(--primary);
        }
        .site-footer .logo .logo-icon {
            background: var(--primary);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.5);
            max-width: 320px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.5);
            font-size: 14px;
            padding: 4px 0;
            transition: all var(--transition);
        }
        .footer-col a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 24px 0;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.35);
            flex-wrap: wrap;
            gap: 16px;
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: rgba(255, 255, 255, 0.5);
            font-size: 16px;
            transition: all var(--transition);
        }
        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 40px;
                text-align: center;
            }
            .hero-content p {
                margin: 0 auto 32px;
            }
            .hero-actions {
                justify-content: center;
            }
            .hero-stats {
                max-width: 500px;
                margin: 0 auto;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 32px 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .footer-brand p {
                max-width: 100%;
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-height: 64px;
                --spacing-section: 60px;
            }
            .main-nav {
                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: 16px 24px;
                gap: 4px;
                box-shadow: var(--shadow-lg);
                transform: translateY(-120%);
                opacity: 0;
                transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
                border-bottom: 1px solid var(--border-light);
                max-height: calc(100vh - var(--header-height));
                overflow-y: auto;
                pointer-events: none;
            }
            .main-nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .main-nav a {
                padding: 12px 16px;
                font-size: 16px;
                width: 100%;
                border-radius: var(--radius-sm);
            }
            .main-nav a.active::after {
                display: none;
            }
            .main-nav a.active {
                background: var(--primary-light);
            }
            .menu-toggle {
                display: flex;
            }
            .search-wrap.desktop {
                display: none;
            }
            .hero {
                padding: 48px 0 40px;
            }
            .hero-content h1 {
                font-size: 32px;
            }
            .hero-content p {
                font-size: 16px;
            }
            .hero-stats {
                grid-template-columns: repeat(3, 1fr);
                padding: 20px 12px;
                gap: 12px;
            }
            .hero-stat .num {
                font-size: 28px;
            }
            .hero-stat .label {
                font-size: 12px;
            }
            .section-header h2 {
                font-size: 28px;
            }
            .section-header p {
                font-size: 16px;
            }
            .events-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .event-card .card-body {
                padding: 16px;
            }
            .event-card .card-body h3 {
                font-size: 16px;
            }
            .stats-grid {
                gap: 16px;
            }
            .stat-box {
                padding: 24px 16px;
            }
            .stat-box .num {
                font-size: 32px;
            }
            .steps-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px 16px;
            }
            .step-card {
                padding: 24px 16px;
            }
            .news-item {
                flex-direction: column;
                padding: 16px;
            }
            .news-item .thumb {
                width: 100%;
                height: 140px;
            }
            .cta-section h2 {
                font-size: 30px;
            }
            .cta-section p {
                font-size: 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .hero-content h1 {
                font-size: 26px;
            }
            .hero-stats {
                grid-template-columns: repeat(3, 1fr);
                padding: 16px 8px;
                gap: 8px;
            }
            .hero-stat .num {
                font-size: 22px;
            }
            .events-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .section-header h2 {
                font-size: 24px;
            }
            .cta-section h2 {
                font-size: 26px;
            }
            .cta-section {
                padding: 60px 0;
            }
            .faq-item .faq-q {
                padding: 16px 18px;
                font-size: 15px;
            }
            .faq-item .faq-a {
                padding: 0 18px 16px;
                font-size: 14px;
            }
        }

        /* ===== 辅助工具 ===== */
        .text-center {
            text-align: center;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-32 {
            margin-top: 32px;
        }
        .gap-16 {
            gap: 16px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .bg-light {
            background: var(--bg);
        }
        .bg-white {
            background: #fff;
        }

/* roulang page: category2 */
/* ===== CSS Variables / Design System ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b6b;
            --secondary: #1d3557;
            --secondary-light: #2a4a7f;
            --accent: #ffb703;
            --accent-dark: #fb8500;
            --bg-dark: #0d1b2a;
            --bg-mid: #1b2838;
            --bg-card: #1e2d3d;
            --bg-light: #f8f9fa;
            --bg-white: #ffffff;
            --text-primary: #f1faee;
            --text-secondary: #b0c4de;
            --text-muted: #6c8a9e;
            --text-dark: #1a1a2e;
            --text-body: #2d2d44;
            --border-color: rgba(255, 255, 255, 0.1);
            --border-light: #e0e0e0;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.15);
            --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.2);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.3);
            --shadow-glow: 0 0 24px rgba(230, 57, 70, 0.3);
            --font-base: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --header-h: 72px;
        }

        /* ===== 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-base);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-dark);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        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;
            border: none;
            outline: none;
            background: none;
            color: inherit;
        }

        button {
            cursor: pointer;
        }

        ul,
        ol {
            list-style: none;
        }

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

        /* ===== Typography ===== */
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.25;
            color: var(--text-primary);
        }

        .section-title {
            font-size: 2rem;
            margin-bottom: 0.75rem;
            letter-spacing: -0.02em;
        }

        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-secondary);
            margin-bottom: 2.5rem;
            max-width: 640px;
        }

        .text-center {
            text-align: center;
        }

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

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--header-h);
            background: rgba(13, 27, 42, 0.95);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-color);
            z-index: 1000;
            transition: var(--transition);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.02em;
            flex-shrink: 0;
        }

        .logo .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border-radius: var(--radius-sm);
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
        }

        .logo span:not(.logo-icon) {
            color: var(--primary);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .main-nav a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
            position: relative;
            white-space: nowrap;
        }

        .main-nav a:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.06);
        }

        .main-nav a.active {
            color: var(--primary);
            background: rgba(230, 57, 70, 0.12);
        }

        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 2px;
        }

        .search-wrap {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid var(--border-color);
            border-radius: 24px;
            padding: 0 16px;
            gap: 10px;
            transition: var(--transition);
            flex: 0 1 220px;
        }

        .search-wrap:focus-within {
            border-color: var(--primary);
            background: rgba(255, 255, 255, 0.12);
            box-shadow: 0 0 0 3px rgba(230, 57, 70, 0.15);
        }

        .search-wrap i {
            color: var(--text-muted);
            font-size: 0.9rem;
        }

        .search-wrap input {
            padding: 10px 0;
            background: transparent;
            color: var(--text-primary);
            font-size: 0.9rem;
            width: 100%;
            min-width: 100px;
        }

        .search-wrap input::placeholder {
            color: var(--text-muted);
        }

        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 6px;
            background: transparent;
            border: none;
        }

        .menu-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: var(--transition);
        }

        /* ===== Hero ===== */
        .page-hero {
            padding: 140px 0 80px;
            background: linear-gradient(160deg, var(--bg-dark) 0%, var(--bg-mid) 60%, rgba(230, 57, 70, 0.08) 100%);
            position: relative;
            overflow: hidden;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(230, 57, 70, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .page-hero .container {
            position: relative;
            z-index: 1;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 48px;
        }

        .hero-content {
            flex: 1;
            max-width: 620px;
        }

        .hero-content .badge {
            display: inline-block;
            padding: 4px 14px;
            background: rgba(230, 57, 70, 0.15);
            border: 1px solid rgba(230, 57, 70, 0.25);
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--primary-light);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .hero-content h1 {
            font-size: 3rem;
            font-weight: 800;
            letter-spacing: -0.03em;
            margin-bottom: 16px;
            line-height: 1.15;
        }

        .hero-content h1 span {
            color: var(--primary);
        }

        .hero-content p {
            font-size: 1.1rem;
            color: var(--text-secondary);
            margin-bottom: 28px;
            max-width: 520px;
            line-height: 1.8;
        }

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

        .hero-stats {
            display: flex;
            gap: 32px;
            flex-shrink: 0;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 32px 40px;
            backdrop-filter: blur(8px);
        }

        .hero-stats .stat-item {
            text-align: center;
        }

        .hero-stats .stat-item .num {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
        }

        .hero-stats .stat-item .label {
            font-size: 0.82rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

        .hero-stats .divider {
            width: 1px;
            background: var(--border-color);
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 13px 32px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--transition);
            border: 2px solid transparent;
            letter-spacing: 0.3px;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            border-color: var(--primary);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-glow);
        }

        .btn-outline {
            background: transparent;
            color: var(--text-primary);
            border-color: var(--border-color);
        }

        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(230, 57, 70, 0.06);
        }

        .btn-sm {
            padding: 8px 20px;
            font-size: 0.85rem;
        }

        .btn-ghost {
            background: transparent;
            color: var(--text-secondary);
            padding: 8px 16px;
            border-radius: var(--radius-sm);
        }

        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-primary);
        }

        /* ===== Sections General ===== */
        .section {
            padding: 80px 0;
        }

        .section-alt {
            background: var(--bg-mid);
        }

        .section-dark {
            background: var(--bg-dark);
        }

        /* ===== Category Card Grid ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            gap: 24px;
        }

        .cat-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .cat-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: 0;
            transition: var(--transition);
        }

        .cat-card:hover {
            transform: translateY(-4px);
            border-color: rgba(230, 57, 70, 0.2);
            box-shadow: var(--shadow-md);
        }

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

        .cat-card .icon {
            font-size: 2rem;
            color: var(--primary);
            margin-bottom: 14px;
        }

        .cat-card h3 {
            font-size: 1.15rem;
            margin-bottom: 8px;
        }

        .cat-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        .cat-card .tag {
            display: inline-block;
            margin-top: 14px;
            padding: 2px 12px;
            background: rgba(255, 183, 3, 0.12);
            color: var(--accent);
            border-radius: 12px;
            font-size: 0.75rem;
            font-weight: 600;
        }

        /* ===== Match / Event Cards ===== */
        .match-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
            gap: 20px;
        }

        .match-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 24px;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .match-card:hover {
            border-color: rgba(230, 57, 70, 0.2);
            box-shadow: var(--shadow-sm);
            transform: translateY(-2px);
        }

        .match-card .meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        .match-card .meta .league {
            padding: 2px 12px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 12px;
            font-weight: 500;
        }

        .match-card .matchup {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 8px 0;
        }

        .match-card .matchup .team {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 4px;
            flex: 1;
            text-align: center;
        }

        .match-card .matchup .team .name {
            font-weight: 600;
            font-size: 0.95rem;
        }

        .match-card .matchup .team .score {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--accent);
        }

        .match-card .matchup .vs {
            color: var(--text-muted);
            font-size: 0.8rem;
            font-weight: 500;
        }

        .match-card .odds-row {
            display: flex;
            gap: 10px;
            margin-top: 4px;
        }

        .match-card .odds-row .odd-item {
            flex: 1;
            text-align: center;
            padding: 8px 6px;
            background: rgba(255, 255, 255, 0.04);
            border-radius: var(--radius-sm);
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-secondary);
            border: 1px solid transparent;
            transition: var(--transition);
            cursor: pointer;
        }

        .match-card .odds-row .odd-item:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(230, 57, 70, 0.08);
        }

        .match-card .odds-row .odd-item .val {
            display: block;
            font-size: 1.1rem;
            color: var(--text-primary);
            margin-top: 2px;
        }

        /* ===== Betting Guide / Info Cards ===== */
        .info-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 24px;
        }

        .info-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            transition: var(--transition);
        }

        .info-card:hover {
            transform: translateY(-3px);
            border-color: rgba(255, 183, 3, 0.15);
            box-shadow: var(--shadow-md);
        }

        .info-card .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: rgba(230, 57, 70, 0.12);
            color: var(--primary);
            border-radius: 50%;
            font-weight: 700;
            font-size: 1.1rem;
            margin-bottom: 14px;
        }

        .info-card h3 {
            font-size: 1.1rem;
            margin-bottom: 8px;
        }

        .info-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* ===== Tips / Feature List ===== */
        .tips-list {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
            gap: 16px;
        }

        .tip-item {
            display: flex;
            gap: 16px;
            align-items: flex-start;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 20px 22px;
            transition: var(--transition);
        }

        .tip-item:hover {
            border-color: rgba(255, 255, 255, 0.08);
            background: rgba(255, 255, 255, 0.02);
        }

        .tip-item .tip-icon {
            flex-shrink: 0;
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(230, 57, 70, 0.1);
            border-radius: var(--radius-sm);
            color: var(--primary);
            font-size: 1.2rem;
        }

        .tip-item .tip-text h4 {
            font-size: 1rem;
            margin-bottom: 4px;
        }

        .tip-item .tip-text p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* ===== Odds Table ===== */
        .odds-table-wrap {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            overflow-x: auto;
        }

        .odds-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.9rem;
        }

        .odds-table thead {
            background: rgba(255, 255, 255, 0.04);
        }

        .odds-table th {
            padding: 14px 18px;
            text-align: left;
            font-weight: 600;
            color: var(--text-muted);
            font-size: 0.8rem;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            border-bottom: 1px solid var(--border-color);
        }

        .odds-table td {
            padding: 14px 18px;
            border-bottom: 1px solid var(--border-color);
            color: var(--text-secondary);
        }

        .odds-table tr:hover td {
            background: rgba(255, 255, 255, 0.02);
        }

        .odds-table .highlight {
            color: var(--accent);
            font-weight: 700;
        }

        .odds-table .team-cell {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 500;
            color: var(--text-primary);
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(255, 255, 255, 0.08);
        }

        .faq-question {
            width: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 18px 24px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-primary);
            background: transparent;
            text-align: left;
            gap: 16px;
        }

        .faq-question i {
            color: var(--text-muted);
            transition: var(--transition);
            font-size: 0.9rem;
            flex-shrink: 0;
        }

        .faq-item.active .faq-question i {
            transform: rotate(180deg);
            color: var(--primary);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 24px;
            color: var(--text-secondary);
            font-size: 0.92rem;
            line-height: 1.7;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(160deg, var(--bg-mid) 0%, rgba(230, 57, 70, 0.06) 100%);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }

        .cta-box {
            text-align: center;
            padding: 60px 40px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            max-width: 720px;
            margin: 0 auto;
        }

        .cta-box h2 {
            font-size: 1.8rem;
            margin-bottom: 12px;
        }

        .cta-box p {
            color: var(--text-secondary);
            margin-bottom: 28px;
            font-size: 1.05rem;
        }

        .cta-box .btn-group {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            border-top: 1px solid var(--border-color);
            padding: 60px 0 30px;
        }

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

        .footer-brand .logo {
            margin-bottom: 14px;
        }

        .footer-brand p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 340px;
        }

        .footer-col h4 {
            font-size: 0.95rem;
            margin-bottom: 16px;
            color: var(--text-primary);
        }

        .footer-col a {
            display: block;
            font-size: 0.88rem;
            color: var(--text-muted);
            padding: 4px 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: 24px;
            border-top: 1px solid var(--border-color);
            font-size: 0.82rem;
            color: var(--text-muted);
            flex-wrap: wrap;
            gap: 16px;
        }

        .footer-social {
            display: flex;
            gap: 12px;
        }

        .footer-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            color: var(--text-muted);
            font-size: 1rem;
            transition: var(--transition);
        }

        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }

            .hero-stats {
                padding: 24px 28px;
            }

            .hero-stats .stat-item .num {
                font-size: 1.6rem;
            }
        }

        @media (max-width: 860px) {
            .page-hero .container {
                flex-direction: column;
                text-align: center;
            }

            .hero-content p {
                margin-left: auto;
                margin-right: auto;
            }

            .hero-buttons {
                justify-content: center;
            }

            .hero-content h1 {
                font-size: 2.4rem;
            }

            .hero-stats {
                width: 100%;
                justify-content: space-around;
            }
        }

        @media (max-width: 768px) {
            .main-nav {
                display: none;
                position: absolute;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: rgba(13, 27, 42, 0.98);
                backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 16px 24px;
                gap: 4px;
                border-bottom: 1px solid var(--border-color);
            }

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

            .main-nav a {
                padding: 12px 16px;
                width: 100%;
                border-radius: var(--radius-sm);
            }

            .main-nav a.active::after {
                display: none;
            }

            .main-nav a.active {
                background: rgba(230, 57, 70, 0.12);
            }

            .search-wrap.desktop {
                display: none;
            }

            .menu-toggle {
                display: flex;
            }

            .section {
                padding: 60px 0;
            }

            .section-title {
                font-size: 1.6rem;
            }

            .match-grid {
                grid-template-columns: 1fr;
            }

            .tips-list {
                grid-template-columns: 1fr;
            }

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

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

            .hero-stats {
                flex-wrap: wrap;
                gap: 16px;
                padding: 20px;
            }

            .hero-stats .divider {
                display: none;
            }

            .hero-stats .stat-item {
                flex: 1;
                min-width: 80px;
            }

            .cta-box {
                padding: 40px 24px;
            }

            .cta-box h2 {
                font-size: 1.4rem;
            }

            .info-grid {
                grid-template-columns: 1fr;
            }

            .category-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

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

            .hero-content h1 {
                font-size: 1.8rem;
            }

            .hero-content p {
                font-size: 0.95rem;
            }

            .section-title {
                font-size: 1.3rem;
            }

            .category-grid {
                grid-template-columns: 1fr;
            }

            .match-card .matchup .team .score {
                font-size: 1.2rem;
            }

            .match-card .odds-row .odd-item {
                font-size: 0.75rem;
                padding: 6px 4px;
            }

            .match-card .odds-row .odd-item .val {
                font-size: 0.95rem;
            }

            .btn {
                padding: 11px 24px;
                font-size: 0.85rem;
            }

            .odds-table th,
            .odds-table td {
                padding: 10px 12px;
                font-size: 0.78rem;
            }

            .faq-question {
                padding: 14px 16px;
                font-size: 0.92rem;
            }

            .faq-answer {
                padding: 0 16px;
                font-size: 0.85rem;
            }

            .faq-item.active .faq-answer {
                padding: 0 16px 16px;
            }
        }

        /* ===== Animations ===== */
        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(24px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .animate-fade-up {
            animation: fadeUp 0.6s ease forwards;
        }

        .delay-1 {
            animation-delay: 0.1s;
        }
        .delay-2 {
            animation-delay: 0.2s;
        }
        .delay-3 {
            animation-delay: 0.3s;
        }
        .delay-4 {
            animation-delay: 0.4s;
        }

/* roulang page: category3 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #e50914;
            --primary-dark: #b2070f;
            --primary-light: #ff2a2a;
            --secondary: #0d0d0d;
            --secondary-light: #1a1a2e;
            --accent: #f5c518;
            --accent-dark: #d4a800;
            --bg-dark: #0a0a0a;
            --bg-card: #111111;
            --bg-card-hover: #1c1c1c;
            --bg-section: #0f0f0f;
            --text-white: #ffffff;
            --text-light: #e0e0e0;
            --text-muted: #999999;
            --text-dark: #666666;
            --border-color: #2a2a2a;
            --border-light: #3a3a3a;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.6);
            --shadow-glow: 0 0 30px rgba(229, 9, 20, 0.15);
            --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --container-width: 1200px;
            --header-height: 72px;
        }

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

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

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-light);
            background: var(--bg-dark);
            min-height: 100vh;
            overflow-x: hidden;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }

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

        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
            color: inherit;
        }

        button {
            cursor: pointer;
        }

        ul,
        ol {
            list-style: none;
        }

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

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== Header / 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(10, 10, 10, 0.95);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            height: var(--header-height);
            transition: var(--transition);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            gap: 24px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: 0.5px;
            flex-shrink: 0;
            transition: var(--transition);
        }

        .logo:hover {
            opacity: 0.9;
        }

        .logo .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-sm);
            font-size: 18px;
            font-weight: 900;
        }

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

        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .main-nav a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            color: var(--text-muted);
            transition: var(--transition);
            position: relative;
            white-space: nowrap;
        }

        .main-nav a:hover {
            color: var(--text-white);
            background: rgba(255, 255, 255, 0.05);
        }

        .main-nav a.active {
            color: var(--text-white);
            background: var(--primary);
            font-weight: 600;
        }

        .main-nav a.active::after {
            display: none;
        }

        .search-wrap {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-color);
            border-radius: 50px;
            padding: 0 18px;
            gap: 10px;
            transition: var(--transition);
            flex: 1;
            max-width: 320px;
            min-width: 180px;
        }

        .search-wrap:focus-within {
            border-color: var(--primary);
            background: rgba(229, 9, 20, 0.08);
            box-shadow: 0 0 0 3px rgba(229, 9, 20, 0.1);
        }

        .search-wrap i {
            color: var(--text-muted);
            font-size: 14px;
            flex-shrink: 0;
        }

        .search-wrap input {
            background: transparent;
            border: none;
            padding: 10px 0;
            font-size: 14px;
            color: var(--text-white);
            width: 100%;
            min-width: 0;
        }

        .search-wrap input::placeholder {
            color: var(--text-dark);
        }

        .search-wrap.desktop {
            display: flex;
        }

        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            background: none;
            border: none;
            cursor: pointer;
            flex-shrink: 0;
        }

        .menu-toggle span {
            display: block;
            width: 26px;
            height: 2px;
            background: var(--text-white);
            border-radius: 2px;
            transition: var(--transition);
        }

        @media (max-width: 868px) {
            .main-nav {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(10, 10, 10, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 16px 24px 24px;
                gap: 4px;
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                border-bottom: 1px solid var(--border-color);
                box-shadow: var(--shadow-lg);
            }

            .main-nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: all;
            }

            .main-nav a {
                width: 100%;
                padding: 14px 18px;
                font-size: 16px;
                border-radius: var(--radius-sm);
            }

            .search-wrap.desktop {
                display: none;
            }

            .menu-toggle {
                display: flex;
            }
        }

        @media (max-width: 520px) {
            .logo {
                font-size: 18px;
                gap: 8px;
            }
            .logo .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 15px;
            }
            .site-header .container {
                gap: 12px;
            }
        }

        /* ===== 移动端搜索占位（导航外） ===== */
        .mobile-search {
            display: none;
            padding: 12px 16px;
            background: var(--bg-card);
            border-bottom: 1px solid var(--border-color);
        }

        .mobile-search .search-wrap {
            max-width: 100%;
            width: 100%;
        }

        @media (max-width: 868px) {
            .mobile-search {
                display: block;
            }
        }

        /* ===== Hero ===== */
        .category-hero {
            padding: 140px 0 80px;
            background: linear-gradient(135deg, #0a0a0a 0%, #1a0a0e 50%, #0d0d1a 100%);
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid var(--border-color);
        }

        .category-hero::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -10%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(229, 9, 20, 0.08) 0%, transparent 70%);
            pointer-events: none;
        }

        .category-hero::after {
            content: '';
            position: absolute;
            bottom: -20%;
            left: -5%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(245, 197, 24, 0.05) 0%, transparent 70%);
            pointer-events: none;
        }

        .category-hero .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
            position: relative;
            z-index: 1;
        }

        .hero-content {
            flex: 1;
            max-width: 620px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(229, 9, 20, 0.15);
            border: 1px solid rgba(229, 9, 20, 0.3);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary-light);
            margin-bottom: 20px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .hero-content h1 {
            font-size: 48px;
            font-weight: 900;
            color: var(--text-white);
            line-height: 1.15;
            margin-bottom: 16px;
        }

        .hero-content h1 span {
            color: var(--primary);
        }

        .hero-content p {
            font-size: 18px;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 28px;
            max-width: 520px;
        }

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

        .hero-visual {
            flex: 0 0 380px;
            display: flex;
            justify-content: center;
            align-items: center;
        }

        .hero-visual .visual-box {
            width: 100%;
            aspect-ratio: 4/3;
            background: linear-gradient(145deg, #1a1a2e, #0d0d1a);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 16px;
            padding: 32px;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .visual-box .icon-row {
            display: flex;
            gap: 24px;
            font-size: 42px;
            color: var(--primary);
            opacity: 0.7;
        }

        .visual-box .icon-row i {
            animation: float 3s ease-in-out infinite;
        }

        .visual-box .icon-row i:nth-child(2) {
            animation-delay: 0.5s;
        }
        .visual-box .icon-row i:nth-child(3) {
            animation-delay: 1s;
        }

        .visual-box .tag-line {
            font-size: 14px;
            color: var(--text-muted);
            letter-spacing: 4px;
            text-transform: uppercase;
            border-top: 1px solid var(--border-color);
            padding-top: 16px;
            width: 80%;
            text-align: center;
        }

        @keyframes float {
            0%,
            100% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(-10px);
            }
        }

        @media (max-width: 1024px) {
            .hero-visual {
                flex: 0 0 300px;
            }
            .hero-content h1 {
                font-size: 38px;
            }
        }

        @media (max-width: 768px) {
            .category-hero {
                padding: 120px 0 60px;
            }
            .category-hero .container {
                flex-direction: column;
                text-align: center;
            }
            .hero-content {
                max-width: 100%;
            }
            .hero-content p {
                max-width: 100%;
                margin-left: auto;
                margin-right: auto;
            }
            .hero-actions {
                justify-content: center;
            }
            .hero-visual {
                flex: 0 0 auto;
                width: 100%;
                max-width: 320px;
            }
            .hero-content h1 {
                font-size: 32px;
            }
            .hero-content p {
                font-size: 16px;
            }
        }

        @media (max-width: 520px) {
            .hero-content h1 {
                font-size: 26px;
            }
            .hero-visual .visual-box .icon-row {
                font-size: 30px;
                gap: 16px;
            }
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 80px 0;
        }

        .section-alt {
            background: var(--bg-section);
        }

        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }

        .section-header h2 {
            font-size: 34px;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }

        .section-header h2 span {
            color: var(--primary);
        }

        .section-header p {
            font-size: 17px;
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.7;
        }

        .section-header .header-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: rgba(229, 9, 20, 0.1);
            padding: 4px 14px;
            border-radius: 50px;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        @media (max-width: 768px) {
            .section {
                padding: 56px 0;
            }
            .section-header h2 {
                font-size: 26px;
            }
            .section-header p {
                font-size: 15px;
            }
            .section-header {
                margin-bottom: 36px;
            }
        }

        @media (max-width: 520px) {
            .section-header h2 {
                font-size: 22px;
            }
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 50px;
            font-size: 15px;
            font-weight: 600;
            transition: var(--transition);
            border: none;
            cursor: pointer;
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 20px rgba(229, 9, 20, 0.3);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(229, 9, 20, 0.4);
        }

        .btn-primary:active {
            transform: translateY(0);
        }

        .btn-outline {
            background: transparent;
            color: var(--text-white);
            border: 1.5px solid var(--border-light);
        }

        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(229, 9, 20, 0.05);
            transform: translateY(-2px);
        }

        .btn-outline:active {
            transform: translateY(0);
        }

        .btn-sm {
            padding: 8px 18px;
            font-size: 13px;
        }

        .btn-lg {
            padding: 16px 36px;
            font-size: 17px;
        }

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

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

        @media (max-width: 620px) {
            .card-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== 游戏/赛事卡片 ===== */
        .game-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 28px 24px 24px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .game-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--primary);
            transform: scaleX(0);
            transform-origin: left;
            transition: var(--transition);
        }

        .game-card:hover {
            border-color: var(--border-light);
            background: var(--bg-card-hover);
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }

        .game-card:hover::before {
            transform: scaleX(1);
        }

        .game-card .card-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-sm);
            background: rgba(229, 9, 20, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: var(--primary);
            margin-bottom: 16px;
            transition: var(--transition);
        }

        .game-card:hover .card-icon {
            background: var(--primary);
            color: #fff;
        }

        .game-card h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 8px;
        }

        .game-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 16px;
        }

        .game-card .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 13px;
            color: var(--text-dark);
            padding-top: 14px;
            border-top: 1px solid var(--border-color);
        }

        .game-card .card-meta i {
            margin-right: 4px;
            color: var(--primary);
        }

        .game-card .card-meta .hot-tag {
            background: rgba(229, 9, 20, 0.15);
            color: var(--primary-light);
            padding: 2px 10px;
            border-radius: 50px;
            font-size: 12px;
            font-weight: 600;
        }

        /* ===== 玩法指南 ===== */
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .guide-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 28px 20px;
            text-align: center;
            transition: var(--transition);
            position: relative;
        }

        .guide-item:hover {
            border-color: var(--border-light);
            transform: translateY(-3px);
            box-shadow: var(--shadow-sm);
        }

        .guide-item .step-num {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 800;
            margin: 0 auto 14px;
        }

        .guide-item h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 6px;
        }

        .guide-item p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        @media (max-width: 868px) {
            .guide-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 480px) {
            .guide-grid {
                grid-template-columns: 1fr;
            }
        }

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

        .stat-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 32px 20px;
            text-align: center;
            transition: var(--transition);
        }

        .stat-item:hover {
            border-color: var(--border-light);
            transform: translateY(-2px);
            box-shadow: var(--shadow-sm);
        }

        .stat-item .stat-number {
            font-size: 36px;
            font-weight: 900;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 6px;
        }

        .stat-item .stat-number span {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-muted);
        }

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

        @media (max-width: 868px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 480px) {
            .stats-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== 热门游戏列表（排行） ===== */
        .rank-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 700px;
            margin: 0 auto;
        }

        .rank-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            padding: 14px 20px;
            transition: var(--transition);
        }

        .rank-item:hover {
            border-color: var(--border-light);
            background: var(--bg-card-hover);
            transform: translateX(4px);
        }

        .rank-item .rank-number {
            font-size: 20px;
            font-weight: 900;
            color: var(--text-muted);
            min-width: 32px;
            text-align: center;
        }

        .rank-item .rank-number.top {
            color: var(--accent);
        }

        .rank-item .rank-info {
            flex: 1;
        }

        .rank-item .rank-info h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-white);
        }

        .rank-item .rank-info p {
            font-size: 13px;
            color: var(--text-muted);
        }

        .rank-item .rank-tag {
            font-size: 13px;
            color: var(--primary);
            font-weight: 600;
            background: rgba(229, 9, 20, 0.1);
            padding: 4px 12px;
            border-radius: 50px;
        }

        /* ===== 平台优势 ===== */
        .advantage-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .advantage-item {
            display: flex;
            gap: 18px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 24px 20px;
            transition: var(--transition);
        }

        .advantage-item:hover {
            border-color: var(--border-light);
            transform: translateY(-2px);
            box-shadow: var(--shadow-sm);
        }

        .advantage-item .adv-icon {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            border-radius: var(--radius-sm);
            background: rgba(229, 9, 20, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--primary);
        }

        .advantage-item h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 4px;
        }

        .advantage-item p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        @media (max-width: 868px) {
            .advantage-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 520px) {
            .advantage-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: var(--border-light);
        }

        .faq-question {
            padding: 18px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-white);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            transition: var(--transition);
            user-select: none;
            background: none;
            width: 100%;
            text-align: left;
            border: none;
        }

        .faq-question i {
            color: var(--primary);
            transition: var(--transition);
            flex-shrink: 0;
            font-size: 14px;
        }

        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }

        .faq-answer {
            padding: 0 24px 18px;
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.8;
            display: none;
        }

        .faq-item.open .faq-answer {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 80px 0;
            background: linear-gradient(135deg, #0a0a0a 0%, #1a0a0e 100%);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }

        .cta-box {
            max-width: 700px;
            margin: 0 auto;
            text-align: center;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 50px 40px;
            box-shadow: var(--shadow-lg);
        }

        .cta-box h2 {
            font-size: 30px;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 12px;
        }

        .cta-box h2 span {
            color: var(--primary);
        }

        .cta-box p {
            font-size: 16px;
            color: var(--text-muted);
            margin-bottom: 28px;
            line-height: 1.7;
        }

        .cta-box .btn-group {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        @media (max-width: 768px) {
            .cta-box {
                padding: 36px 24px;
            }
            .cta-box h2 {
                font-size: 24px;
            }
            .cta-section {
                padding: 56px 0;
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--secondary);
            border-top: 1px solid var(--border-color);
            padding: 60px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 32px;
            padding-bottom: 40px;
            border-bottom: 1px solid var(--border-color);
        }

        .footer-brand .logo {
            font-size: 20px;
            margin-bottom: 14px;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.8;
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 16px;
        }

        .footer-col a {
            display: block;
            font-size: 14px;
            color: var(--text-muted);
            padding: 5px 0;
            transition: var(--transition);
        }

        .footer-col a:hover {
            color: var(--primary);
            padding-left: 4px;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 0;
            flex-wrap: wrap;
            gap: 12px;
        }

        .footer-bottom span {
            font-size: 13px;
            color: var(--text-dark);
        }

        .footer-social {
            display: flex;
            gap: 12px;
        }

        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.05);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            font-size: 16px;
            transition: var(--transition);
        }

        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        @media (max-width: 868px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .footer-brand p {
                max-width: 100%;
            }
        }

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

        /* ===== 实用工具 ===== */
        .text-center {
            text-align: center;
        }
        .mt-12 {
            margin-top: 12px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mt-40 {
            margin-top: 40px;
        }
        .gap-12 {
            gap: 12px;
        }

        /* ===== 响应式微调 ===== */
        @media (max-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 620px) {
            .card-grid {
                grid-template-columns: 1fr;
            }
            .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }
        }

        /* ===== 滚动条美化 ===== */
        ::-webkit-scrollbar {
            width: 8px;
            height: 8px;
        }

        ::-webkit-scrollbar-track {
            background: var(--bg-dark);
        }

        ::-webkit-scrollbar-thumb {
            background: var(--border-color);
            border-radius: 4px;
        }

        ::-webkit-scrollbar-thumb:hover {
            background: var(--border-light);
        }

        /* ===== 焦点样式 ===== */
        :focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }