/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0b1a2e;
            --primary-light: #132a4a;
            --secondary: #1a73e8;
            --secondary-light: #4a9eff;
            --accent: #f59e0b;
            --accent-light: #fbbf24;
            --bg: #f8fafc;
            --bg-alt: #eef2f7;
            --card-bg: #ffffff;
            --text: #1e293b;
            --text-weak: #64748b;
            --text-inverse: #f1f5f9;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
            --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -1px rgba(0,0,0,0.04);
            --shadow-lg: 0 10px 25px -3px rgba(0,0,0,0.08), 0 4px 6px -2px rgba(0,0,0,0.04);
            --shadow-xl: 0 20px 40px -5px rgba(0,0,0,0.1);
            --transition: 0.25s cubic-bezier(0.4,0,0.2,1);
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            --container: 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);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-top: var(--header-h);
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: var(--secondary); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--secondary-light); }
        a:focus-visible { outline: 2px solid var(--secondary); outline-offset: 2px; border-radius: 4px; }
        button { font-family: inherit; cursor: pointer; border: none; background: none; font-size: inherit; }
        input, textarea { font-family: inherit; font-size: inherit; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--primary); }
        h1 { font-size: 2.75rem; }
        h2 { font-size: 2.125rem; }
        h3 { font-size: 1.5rem; }
        h4 { font-size: 1.25rem; }

        /* ===== 容器 ===== */
        .container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 20px; }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex; align-items: center; justify-content: center; gap: 8px;
            padding: 12px 28px; border-radius: var(--radius-sm); font-weight: 600; font-size: 0.95rem;
            transition: all var(--transition); border: 2px solid transparent;
            position: relative; overflow: hidden; cursor: pointer;
        }
        .btn-primary { background: var(--secondary); color: #fff; border-color: var(--secondary); }
        .btn-primary:hover { background: var(--secondary-light); border-color: var(--secondary-light); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 20px rgba(26,115,232,0.3); }
        .btn-primary:active { transform: translateY(0); box-shadow: none; }
        .btn-accent { background: var(--accent); color: var(--primary); border-color: var(--accent); }
        .btn-accent:hover { background: var(--accent-light); border-color: var(--accent-light); color: var(--primary); transform: translateY(-2px); box-shadow: 0 8px 20px rgba(245,158,11,0.3); }
        .btn-outline { background: transparent; color: var(--secondary); border-color: var(--secondary); }
        .btn-outline:hover { background: var(--secondary); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 20px rgba(26,115,232,0.2); }
        .btn-white { background: #fff; color: var(--primary); border-color: #fff; }
        .btn-white:hover { background: var(--bg-alt); color: var(--primary); transform: translateY(-2px); box-shadow: 0 8px 20px rgba(0,0,0,0.1); }
        .btn-lg { padding: 16px 36px; font-size: 1.05rem; border-radius: var(--radius); }
        .btn-sm { padding: 8px 18px; font-size: 0.85rem; }
        .btn:focus-visible { outline: 2px solid var(--secondary); outline-offset: 3px; }

        /* ===== 标签 / 徽章 ===== */
        .tag {
            display: inline-block; padding: 4px 14px; border-radius: 20px;
            font-size: 0.8rem; font-weight: 500; background: var(--bg-alt); color: var(--text-weak);
            transition: all var(--transition);
        }
        .tag-primary { background: rgba(26,115,232,0.1); color: var(--secondary); }
        .tag-accent { background: rgba(245,158,11,0.1); color: #b45309; }
        .tag-success { background: rgba(16,185,129,0.1); color: #059669; }
        .badge {
            display: inline-flex; align-items: center; gap: 4px;
            padding: 2px 12px; border-radius: 20px; font-size: 0.75rem; font-weight: 600;
            background: var(--secondary); color: #fff;
        }

        /* ===== 卡片 ===== */
        .card {
            background: var(--card-bg); border-radius: var(--radius); box-shadow: var(--shadow);
            border: 1px solid var(--border); transition: all var(--transition); overflow: hidden;
        }
        .card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); border-color: rgba(26,115,232,0.15); }
        .card-img { width: 100%; aspect-ratio: 16/9; object-fit: cover; }
        .card-body { padding: 24px; }
        .card-title { font-size: 1.1rem; font-weight: 600; color: var(--primary); margin-bottom: 8px; }
        .card-text { font-size: 0.92rem; color: var(--text-weak); line-height: 1.6; }

        /* ===== 网格 ===== */
        .grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 30px; }
        .grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
        .grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

        /* ===== 板块通用 ===== */
        .section { padding: 80px 0; }
        .section-alt { background: var(--bg-alt); }
        .section-dark { background: var(--primary); color: var(--text-inverse); }
        .section-dark h2, .section-dark h3 { color: #fff; }
        .section-header { text-align: center; max-width: 720px; margin: 0 auto 50px; }
        .section-header h2 { margin-bottom: 14px; }
        .section-header p { font-size: 1.08rem; color: var(--text-weak); line-height: 1.7; }
        .section-dark .section-header p { color: rgba(255,255,255,0.7); }
        .section-divider { width: 60px; height: 3px; background: var(--secondary); border-radius: 4px; margin: 16px auto; }

        /* ===== Header / Nav ===== */
        .header {
            position: fixed; top: 0; left: 0; right: 0; z-index: 1000; height: var(--header-h);
            background: rgba(255,255,255,0.97); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border); box-shadow: 0 1px 4px rgba(0,0,0,0.03);
            transition: background var(--transition);
        }
        .header .container { display: flex; align-items: center; justify-content: space-between; height: 100%; }
        .logo { font-size: 1.35rem; font-weight: 800; color: var(--primary); letter-spacing: -0.5px; transition: color var(--transition); }
        .logo:hover { color: var(--secondary); }
        .logo span { color: var(--secondary); }
        .logo i { color: var(--accent); margin-right: 6px; font-size: 1.2rem; }
        .nav { display: flex; align-items: center; gap: 8px; }
        .nav a {
            display: flex; align-items: center; gap: 6px;
            padding: 8px 18px; border-radius: var(--radius-sm); font-weight: 500; font-size: 0.92rem;
            color: var(--text); transition: all var(--transition); position: relative;
        }
        .nav a:hover { background: var(--bg-alt); color: var(--secondary); }
        .nav a.active { background: var(--secondary); color: #fff; }
        .nav a.active:hover { background: var(--secondary-light); }
        .nav a i { font-size: 0.9rem; }
        .nav-toggle { display: none; flex-direction: column; gap: 5px; padding: 8px; cursor: pointer; background: none; border: none; }
        .nav-toggle span { display: block; width: 24px; height: 2px; background: var(--text); border-radius: 4px; transition: all var(--transition); }

        /* ===== Hero ===== */
        .hero {
            min-height: 580px; display: flex; align-items: center; position: relative; overflow: hidden;
            background: var(--primary); color: #fff;
        }
        .hero-bg {
            position: absolute; inset: 0; background-size: cover; background-position: center;
            opacity: 0.25; mix-blend-mode: overlay;
        }
        .hero-overlay {
            position: absolute; inset: 0;
            background: linear-gradient(135deg, rgba(11,26,46,0.92) 0%, rgba(11,26,46,0.6) 60%, rgba(26,115,232,0.2) 100%);
        }
        .hero .container { position: relative; z-index: 2; padding: 60px 20px; }
        .hero-content { max-width: 680px; }
        .hero-tag { margin-bottom: 20px; }
        .hero-tag .tag { background: rgba(255,255,255,0.12); color: #fff; border: 1px solid rgba(255,255,255,0.15); }
        .hero h1 { font-size: 3.2rem; font-weight: 800; color: #fff; line-height: 1.2; margin-bottom: 18px; letter-spacing: -0.5px; }
        .hero h1 span { color: var(--accent); }
        .hero p { font-size: 1.15rem; color: rgba(255,255,255,0.8); line-height: 1.7; max-width: 560px; margin-bottom: 32px; }
        .hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
        .hero-stats { display: flex; gap: 40px; margin-top: 48px; padding-top: 32px; border-top: 1px solid rgba(255,255,255,0.1); }
        .hero-stat h4 { font-size: 1.8rem; font-weight: 800; color: #fff; margin-bottom: 2px; }
        .hero-stat p { font-size: 0.88rem; color: rgba(255,255,255,0.6); margin-bottom: 0; max-width: none; }

        /* ===== 优势板块 ===== */
        .advantage-card { text-align: center; padding: 40px 28px; }
        .advantage-icon {
            width: 64px; height: 64px; border-radius: 16px; display: flex; align-items: center; justify-content: center;
            margin: 0 auto 20px; font-size: 1.6rem; color: #fff;
        }
        .advantage-icon.blue { background: linear-gradient(135deg, var(--secondary), var(--secondary-light)); }
        .advantage-icon.gold { background: linear-gradient(135deg, var(--accent), var(--accent-light)); }
        .advantage-icon.green { background: linear-gradient(135deg, #059669, #34d399); }
        .advantage-card h3 { margin-bottom: 10px; }

        /* ===== 分类入口 ===== */
        .category-grid { display: grid; grid-template-columns: repeat(1, 1fr); gap: 28px; }
        .category-card {
            display: flex; align-items: center; background: var(--card-bg); border-radius: var(--radius);
            box-shadow: var(--shadow); border: 1px solid var(--border); overflow: hidden;
            transition: all var(--transition);
        }
        .category-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-3px); border-color: rgba(26,115,232,0.15); }
        .category-img { width: 280px; min-height: 200px; object-fit: cover; flex-shrink: 0; }
        .category-info { padding: 28px 32px; flex: 1; }
        .category-info h3 { font-size: 1.3rem; margin-bottom: 8px; }
        .category-info p { color: var(--text-weak); font-size: 0.95rem; margin-bottom: 16px; max-width: 480px; }
        .category-meta { display: flex; align-items: center; gap: 16px; font-size: 0.85rem; color: var(--text-weak); }

        /* ===== 最新资讯列表 ===== */
        .news-list { display: flex; flex-direction: column; gap: 16px; }
        .news-item {
            display: flex; align-items: center; gap: 20px; padding: 20px 24px;
            background: var(--card-bg); border-radius: var(--radius-sm); border: 1px solid var(--border);
            transition: all var(--transition);
        }
        .news-item:hover { background: var(--bg-alt); border-color: rgba(26,115,232,0.12); transform: translateX(4px); }
        .news-tag { flex-shrink: 0; }
        .news-title { flex: 1; font-weight: 500; color: var(--text); }
        .news-title a { color: var(--text); }
        .news-title a:hover { color: var(--secondary); }
        .news-date { flex-shrink: 0; font-size: 0.85rem; color: var(--text-weak); white-space: nowrap; }
        .news-empty { text-align: center; padding: 48px 20px; color: var(--text-weak); font-size: 1rem; background: var(--card-bg); border-radius: var(--radius); border: 1px dashed var(--border); }

        /* ===== 数据统计 ===== */
        .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
        .stat-card { text-align: center; padding: 36px 20px; background: rgba(255,255,255,0.06); border-radius: var(--radius); border: 1px solid rgba(255,255,255,0.08); transition: all var(--transition); }
        .stat-card:hover { background: rgba(255,255,255,0.1); transform: translateY(-3px); }
        .stat-card .stat-number { font-size: 2.4rem; font-weight: 800; color: var(--accent); margin-bottom: 4px; }
        .stat-card .stat-label { font-size: 0.92rem; color: rgba(255,255,255,0.7); }

        /* ===== 使用流程 ===== */
        .steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; counter-reset: step; }
        .step-card { text-align: center; padding: 36px 24px; position: relative; }
        .step-number {
            width: 56px; height: 56px; border-radius: 50%; display: flex; align-items: center; justify-content: center;
            margin: 0 auto 18px; font-size: 1.3rem; font-weight: 700; color: #fff;
            background: linear-gradient(135deg, var(--secondary), var(--secondary-light));
            position: relative; z-index: 1;
        }
        .step-card::before {
            content: ''; position: absolute; top: 28px; left: calc(50% + 40px); right: calc(-50% + 40px);
            height: 2px; background: var(--border); display: none;
        }
        .step-card:not(:last-child)::before { display: block; }
        .step-card h3 { margin-bottom: 8px; }
        .step-card p { color: var(--text-weak); font-size: 0.92rem; }

        /* ===== FAQ ===== */
        .faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
        .faq-item { background: var(--card-bg); border-radius: var(--radius-sm); border: 1px solid var(--border); overflow: hidden; transition: all var(--transition); }
        .faq-item:hover { border-color: rgba(26,115,232,0.12); }
        .faq-question {
            display: flex; align-items: center; justify-content: space-between; gap: 16px;
            padding: 18px 24px; font-weight: 600; font-size: 1rem; color: var(--text);
            cursor: pointer; transition: background var(--transition); width: 100%; text-align: left;
        }
        .faq-question:hover { background: var(--bg-alt); }
        .faq-question i { color: var(--secondary); transition: transform var(--transition); font-size: 0.9rem; }
        .faq-item.active .faq-question i { transform: rotate(180deg); }
        .faq-answer { padding: 0 24px 18px; font-size: 0.95rem; color: var(--text-weak); line-height: 1.7; display: none; }
        .faq-item.active .faq-answer { display: block; }

        /* ===== CTA ===== */
        .cta-section { background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%); position: relative; overflow: hidden; }
        .cta-section::before {
            content: ''; position: absolute; inset: 0;
            background-image: url('/assets/images/backpic/back-2.png'); background-size: cover; background-position: center;
            opacity: 0.06; mix-blend-mode: overlay;
        }
        .cta-content { position: relative; z-index: 2; text-align: center; padding: 80px 20px; }
        .cta-content h2 { font-size: 2.2rem; color: #fff; margin-bottom: 14px; }
        .cta-content p { font-size: 1.08rem; color: rgba(255,255,255,0.75); max-width: 540px; margin: 0 auto 28px; }

        /* ===== Footer ===== */
        .footer { background: var(--primary); color: rgba(255,255,255,0.7); padding: 56px 0 32px; border-top: 1px solid rgba(255,255,255,0.06); }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
        .footer-brand .logo { color: #fff; font-size: 1.3rem; }
        .footer-brand .logo span { color: var(--secondary-light); }
        .footer-brand p { font-size: 0.9rem; margin-top: 14px; max-width: 320px; color: rgba(255,255,255,0.6); }
        .footer h4 { color: #fff; font-size: 1rem; margin-bottom: 16px; }
        .footer ul li { margin-bottom: 10px; }
        .footer ul a { color: rgba(255,255,255,0.6); font-size: 0.9rem; transition: color var(--transition); }
        .footer ul a:hover { color: var(--secondary-light); }
        .footer-divider { border: none; height: 1px; background: rgba(255,255,255,0.08); margin: 24px 0; }
        .footer-bottom { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; font-size: 0.85rem; color: rgba(255,255,255,0.5); }
        .footer-socials { display: flex; gap: 12px; }
        .footer-socials a {
            width: 36px; height: 36px; border-radius: 50%; display: flex; align-items: center; justify-content: center;
            background: rgba(255,255,255,0.08); color: rgba(255,255,255,0.6); font-size: 0.9rem;
            transition: all var(--transition);
        }
        .footer-socials a:hover { background: var(--secondary); color: #fff; transform: translateY(-2px); }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .grid-4 { grid-template-columns: repeat(2, 1fr); }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: repeat(2, 1fr); }
            .hero h1 { font-size: 2.6rem; }
            .category-card { flex-direction: column; }
            .category-img { width: 100%; height: 200px; }
        }
        @media (max-width: 768px) {
            :root { --header-h: 64px; }
            h1 { font-size: 2rem; }
            h2 { font-size: 1.6rem; }
            .section { padding: 56px 0; }
            .nav { display: none; position: absolute; top: var(--header-h); left: 0; right: 0; background: rgba(255,255,255,0.98); backdrop-filter: blur(12px); flex-direction: column; padding: 16px 20px; border-bottom: 1px solid var(--border); box-shadow: var(--shadow-lg); }
            .nav.open { display: flex; }
            .nav a { width: 100%; padding: 12px 16px; }
            .nav-toggle { display: flex; }
            .hero { min-height: 440px; }
            .hero h1 { font-size: 2rem; }
            .hero p { font-size: 1rem; }
            .hero-stats { flex-wrap: wrap; gap: 20px; }
            .hero-stat h4 { font-size: 1.4rem; }
            .grid-2, .grid-3 { grid-template-columns: 1fr; }
            .grid-4 { grid-template-columns: repeat(2, 1fr); gap: 16px; }
            .steps { grid-template-columns: 1fr; }
            .step-card::before { display: none !important; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .news-item { flex-direction: column; align-items: flex-start; gap: 8px; }
            .news-date { align-self: flex-end; }
            .section-header { margin-bottom: 32px; }
            .cta-content h2 { font-size: 1.6rem; }
            .hero-actions .btn { width: 100%; text-align: center; }
            .stat-card .stat-number { font-size: 1.8rem; }
        }
        @media (max-width: 520px) {
            .grid-4 { grid-template-columns: 1fr; }
            .stats-grid { grid-template-columns: 1fr; }
            .hero h1 { font-size: 1.7rem; }
            .hero-stats { flex-direction: column; gap: 12px; }
            .category-img { height: 160px; }
            .card-body { padding: 18px; }
            .faq-question { padding: 14px 18px; font-size: 0.95rem; }
            .faq-answer { padding: 0 18px 14px; }
        }

        /* ===== 工具类 ===== */
        .text-center { text-align: center; }
        .mt-16 { margin-top: 16px; }
        .mt-24 { margin-top: 24px; }
        .mt-32 { margin-top: 32px; }
        .gap-8 { gap: 8px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .hidden { display: none !important; }

        /* ===== 动画 ===== */
        @keyframes fadeUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
        .animate-fade-up { animation: fadeUp 0.6s ease-out both; }
        .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: category1 */
/* ========== 设计变量 ========== */
        :root {
            --primary: #1a4a8a;
            --primary-light: #2a6abe;
            --primary-dark: #0d2d5a;
            --secondary: #e8a838;
            --secondary-light: #f5c56a;
            --accent: #22a67e;
            --bg-body: #f5f7fb;
            --bg-white: #ffffff;
            --bg-card: #ffffff;
            --bg-dark: #0d1b30;
            --bg-section-alt: #eef2f7;
            --text-primary: #1a2332;
            --text-secondary: #4a5568;
            --text-muted: #8896a8;
            --text-white: #ffffff;
            --text-link: #1a4a8a;
            --border-color: #e2e8f0;
            --border-light: #f0f2f5;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.12);
            --shadow-hover: 0 20px 40px rgba(0, 0, 0, 0.15);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --max-width: 1200px;
            --header-h: 72px;
            --spacer-section: 80px;
            --spacer-section-mobile: 50px;
        }

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

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

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

        ul,
        ol {
            list-style: none;
        }

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

        button {
            cursor: pointer;
            background: none;
        }

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

        /* ========== Header & Nav ========== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-h);
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
            transition: var(--transition);
        }

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

        .logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 24px;
            font-weight: 800;
            color: var(--primary);
            text-decoration: none;
            letter-spacing: -0.5px;
        }
        .logo i {
            font-size: 28px;
            color: var(--secondary);
        }
        .logo span {
            color: var(--secondary);
            font-weight: 700;
        }
        .logo:hover {
            color: var(--primary);
            opacity: 0.9;
        }

        .nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
            position: relative;
        }
        .nav a i {
            font-size: 14px;
        }
        .nav a:hover {
            color: var(--primary);
            background: rgba(26, 74, 138, 0.06);
        }
        .nav a.active {
            color: var(--primary);
            background: rgba(26, 74, 138, 0.10);
            font-weight: 600;
        }
        .nav a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 18px;
            right: 18px;
            height: 3px;
            background: var(--secondary);
            border-radius: 2px;
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 6px;
            background: none;
            border: none;
            cursor: pointer;
        }
        .nav-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: var(--transition);
        }

        /* ========== Banner ========== */
        .banner {
            margin-top: var(--header-h);
            padding: 100px 0 80px;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
            position: relative;
            overflow: hidden;
            min-height: 340px;
            display: flex;
            align-items: center;
        }
        .banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            opacity: 0.18;
            mix-blend-mode: overlay;
        }
        .banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 20% 60%, rgba(232, 168, 56, 0.20) 0%, transparent 70%);
        }
        .banner .container {
            position: relative;
            z-index: 2;
            text-align: center;
            color: var(--text-white);
        }
        .banner h1 {
            font-size: 44px;
            font-weight: 800;
            letter-spacing: -0.5px;
            margin-bottom: 16px;
            text-shadow: 0 2px 12px rgba(0, 0, 0, 0.20);
        }
        .banner h1 i {
            color: var(--secondary);
            margin-right: 10px;
        }
        .banner p {
            font-size: 18px;
            max-width: 640px;
            margin: 0 auto 28px;
            opacity: 0.90;
            line-height: 1.7;
        }
        .banner .banner-tags {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 10px;
        }
        .banner .banner-tags span {
            display: inline-block;
            padding: 6px 18px;
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(4px);
            border: 1px solid rgba(255, 255, 255, 0.20);
            border-radius: 30px;
            font-size: 14px;
            font-weight: 500;
            color: #fff;
        }

        /* ========== section共用 ========== */
        .section {
            padding: var(--spacer-section) 0;
        }
        .section-alt {
            background: var(--bg-section-alt);
        }
        .section-white {
            background: var(--bg-white);
        }
        .section-title {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .section-sub {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 600px;
            margin-bottom: 40px;
            line-height: 1.7;
        }
        .text-center {
            text-align: center;
        }
        .mx-auto {
            margin-left: auto;
            margin-right: auto;
        }

        /* ========== 分类筛选标签 ========== */
        .filter-tabs {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            margin-bottom: 40px;
        }
        .filter-tabs .tab-btn {
            padding: 8px 24px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 500;
            background: var(--bg-white);
            border: 1.5px solid var(--border-color);
            color: var(--text-secondary);
            transition: var(--transition);
        }
        .filter-tabs .tab-btn:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(26, 74, 138, 0.04);
        }
        .filter-tabs .tab-btn.active {
            background: var(--primary);
            border-color: var(--primary);
            color: var(--text-white);
            box-shadow: 0 4px 14px rgba(26, 74, 138, 0.30);
        }

        /* ========== 卡片网格 ========== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .event-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .event-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: transparent;
        }
        .event-card .card-img {
            position: relative;
            width: 100%;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--bg-section-alt);
        }
        .event-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .event-card:hover .card-img img {
            transform: scale(1.05);
        }
        .event-card .card-img .card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
            background: var(--secondary);
            color: var(--text-primary);
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
        }
        .event-card .card-img .card-badge.live {
            background: #e74c3c;
            color: #fff;
            animation: pulse-dot 1.6s ease-in-out infinite;
        }
        @keyframes pulse-dot {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(231, 76, 60, 0.5);
            }
            50% {
                box-shadow: 0 0 0 8px rgba(231, 76, 60, 0);
            }
        }
        .event-card .card-body {
            padding: 20px 22px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .event-card .card-body .card-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 8px;
        }
        .event-card .card-body .card-meta i {
            margin-right: 4px;
        }
        .event-card .card-body h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .event-card .card-body p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 16px;
            flex: 1;
        }
        .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 .tag {
            font-size: 12px;
            padding: 3px 12px;
            border-radius: 14px;
            background: var(--bg-section-alt);
            color: var(--text-secondary);
            font-weight: 500;
        }
        .event-card .card-body .card-footer .btn-text {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 4px;
            transition: var(--transition);
        }
        .event-card .card-body .card-footer .btn-text:hover {
            gap: 8px;
            color: var(--primary-light);
        }

        /* ========== 分类板块 ========== */
        .category-row {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .cat-block {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 32px 28px 30px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            text-align: center;
        }
        .cat-block:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }
        .cat-block .cat-icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 16px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            background: rgba(26, 74, 138, 0.08);
            color: var(--primary);
            transition: var(--transition);
        }
        .cat-block:hover .cat-icon {
            background: var(--primary);
            color: #fff;
            transform: scale(1.06);
        }
        .cat-block h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .cat-block p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .cat-block .cat-count {
            font-size: 13px;
            color: var(--text-muted);
        }
        .cat-block .cat-count strong {
            color: var(--primary);
            font-weight: 700;
        }

        /* ========== 特色赛事 ========== */
        .featured-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }
        .featured-card {
            position: relative;
            border-radius: var(--radius-md);
            overflow: hidden;
            aspect-ratio: 16 / 9;
            background: var(--bg-dark);
            display: flex;
            align-items: flex-end;
            box-shadow: var(--shadow-md);
            transition: var(--transition);
        }
        .featured-card:hover {
            transform: scale(1.01);
            box-shadow: var(--shadow-lg);
        }
        .featured-card img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .featured-card:hover img {
            transform: scale(1.04);
        }
        .featured-card .overlay {
            position: relative;
            z-index: 2;
            padding: 28px 24px;
            background: linear-gradient(0deg, rgba(0, 0, 0, 0.80) 0%, transparent 100%);
            width: 100%;
            color: #fff;
        }
        .featured-card .overlay .f-tag {
            font-size: 12px;
            font-weight: 600;
            padding: 3px 12px;
            border-radius: 14px;
            background: var(--secondary);
            color: var(--text-primary);
            display: inline-block;
            margin-bottom: 8px;
        }
        .featured-card .overlay h3 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .featured-card .overlay p {
            font-size: 14px;
            opacity: 0.85;
            line-height: 1.6;
        }

        /* ========== 数据统计 ========== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 32px 20px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .stat-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
        }
        .stat-item .stat-num {
            font-size: 40px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 4px;
        }
        .stat-item .stat-num span {
            font-size: 24px;
            font-weight: 600;
            color: var(--text-muted);
        }
        .stat-item .stat-label {
            font-size: 15px;
            color: var(--text-secondary);
            font-weight: 500;
        }

        /* ========== CTA ========== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
            padding: 70px 0;
            text-align: center;
            color: var(--text-white);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.10;
            mix-blend-mode: overlay;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: 34px;
            font-weight: 800;
            margin-bottom: 12px;
        }
        .cta-section p {
            font-size: 17px;
            opacity: 0.90;
            max-width: 560px;
            margin: 0 auto 28px;
        }
        .cta-section .btn-group {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 36px;
            border-radius: 40px;
            font-size: 16px;
            font-weight: 600;
            background: var(--secondary);
            color: var(--text-primary);
            transition: var(--transition);
            border: none;
            box-shadow: 0 4px 16px rgba(232, 168, 56, 0.40);
        }
        .btn-primary:hover {
            background: var(--secondary-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(232, 168, 56, 0.50);
            color: var(--text-primary);
        }
        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 36px;
            border-radius: 40px;
            font-size: 16px;
            font-weight: 600;
            background: transparent;
            color: var(--text-white);
            border: 2px solid rgba(255, 255, 255, 0.40);
            transition: var(--transition);
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
            color: #fff;
            transform: translateY(-2px);
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-sm);
        }
        .faq-item summary {
            padding: 18px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            list-style: none;
            transition: var(--transition);
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 14px;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .faq-item[open] summary::after {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-item summary:hover {
            color: var(--primary);
        }
        .faq-item .faq-answer {
            padding: 0 24px 18px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        /* ========== Footer ========== */
        .footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.80);
            padding: 60px 0 30px;
        }
        .footer .logo {
            color: #fff;
            margin-bottom: 12px;
        }
        .footer .logo span {
            color: var(--secondary);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 40px;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            opacity: 0.75;
            margin-top: 8px;
        }
        .footer h4 {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer ul li {
            margin-bottom: 10px;
        }
        .footer ul a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 14px;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .footer ul a:hover {
            color: var(--secondary);
            padding-left: 4px;
        }
        .footer-divider {
            border: none;
            border-top: 1px solid rgba(255, 255, 255, 0.10);
            margin: 32px 0 24px;
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            opacity: 0.70;
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-socials {
            display: flex;
            gap: 14px;
        }
        .footer-socials a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            color: rgba(255, 255, 255, 0.70);
            font-size: 16px;
            transition: var(--transition);
        }
        .footer-socials a:hover {
            background: var(--secondary);
            color: var(--text-primary);
            transform: scale(1.08);
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .category-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .featured-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --spacer-section: 50px;
            }
            .header .container {
                padding: 0 16px;
            }
            .nav {
                position: fixed;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(12px);
                flex-direction: column;
                padding: 16px 20px 24px;
                gap: 6px;
                border-bottom: 1px solid var(--border-color);
                box-shadow: var(--shadow-md);
                transform: translateY(-110%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                border-radius: 0 0 var(--radius-md) var(--radius-md);
            }
            .nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav a {
                padding: 12px 16px;
                font-size: 16px;
                border-radius: var(--radius-sm);
                width: 100%;
            }
            .nav a.active::after {
                display: none;
            }
            .nav a.active {
                background: rgba(26, 74, 138, 0.10);
            }
            .nav-toggle {
                display: flex;
            }
            .banner {
                padding: 70px 0 50px;
                min-height: 260px;
            }
            .banner h1 {
                font-size: 30px;
            }
            .banner p {
                font-size: 16px;
            }
            .section-title {
                font-size: 26px;
            }
            .card-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .category-row {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-item .stat-num {
                font-size: 32px;
            }
            .cta-section h2 {
                font-size: 26px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .filter-tabs {
                gap: 8px;
            }
            .filter-tabs .tab-btn {
                padding: 6px 16px;
                font-size: 13px;
            }
        }

        @media (max-width: 520px) {
            .banner h1 {
                font-size: 24px;
            }
            .banner .banner-tags span {
                font-size: 12px;
                padding: 4px 14px;
            }
            .section-title {
                font-size: 22px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-item {
                padding: 20px 12px;
            }
            .stat-item .stat-num {
                font-size: 28px;
            }
            .btn-primary,
            .btn-outline-light {
                padding: 12px 24px;
                font-size: 14px;
            }
            .faq-item summary {
                padding: 14px 16px;
                font-size: 15px;
            }
            .faq-item .faq-answer {
                padding: 0 16px 14px;
                font-size: 14px;
            }
            .event-card .card-body {
                padding: 16px 18px 18px;
            }
            .cat-block {
                padding: 24px 18px 22px;
            }
        }

        /* ========== 滚动条美化 ========== */
        ::-webkit-scrollbar {
            width: 6px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-body);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--border-color);
            border-radius: 10px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--text-muted);
        }

        /* ========== 选中高亮 ========== */
        ::selection {
            background: var(--primary);
            color: #fff;
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a5cff;
            --primary-light: #4a7fff;
            --primary-dark: #0d3ea8;
            --secondary: #00c9a7;
            --secondary-light: #33dbbd;
            --secondary-dark: #009e82;
            --accent: #f59e0b;
            --bg: #f4f7fc;
            --bg-card: #ffffff;
            --bg-dark: #0b1423;
            --bg-soft: #e8edf5;
            --text: #1a2332;
            --text-light: #5a6a7a;
            --text-white: #f0f4ff;
            --border: #dce2ed;
            --radius: 14px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 4px 24px rgba(0, 20, 50, 0.06);
            --shadow-hover: 0 12px 40px rgba(0, 20, 50, 0.12);
            --shadow-lg: 0 20px 60px rgba(0, 20, 50, 0.15);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Segoe UI', system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --max-width: 1200px;
            --content-width: 800px;
        }

        /* ===== 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);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-dark); }
        img { max-width: 100%; height: auto; display: block; }
        ul, ol { list-style: none; }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .container-narrow {
            max-width: var(--content-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .section { padding: 80px 0; }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text);
            letter-spacing: -0.02em;
        }
        .section-sub {
            font-size: 1.05rem;
            color: var(--text-light);
            max-width: 600px;
            line-height: 1.6;
        }
        .text-center { text-align: center; }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .gap-4 { gap: 16px; }
        .gap-6 { gap: 24px; }
        .mt-6 { margin-top: 24px; }
        .mt-10 { margin-top: 40px; }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            line-height: 1.4;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 16px rgba(26, 92, 255, 0.3);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(26, 92, 255, 0.4);
            color: #fff;
        }
        .btn-secondary {
            background: var(--secondary);
            color: #fff;
            box-shadow: 0 4px 16px rgba(0, 201, 167, 0.3);
        }
        .btn-secondary:hover {
            background: var(--secondary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(0, 201, 167, 0.4);
            color: #fff;
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-sm { padding: 8px 20px; font-size: 0.85rem; }
        .btn-lg { padding: 16px 40px; font-size: 1.05rem; }

        /* ===== Badge / Tag ===== */
        .badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.78rem;
            font-weight: 600;
            background: var(--bg-soft);
            color: var(--text-light);
            transition: var(--transition);
        }
        .badge-primary {
            background: rgba(26, 92, 255, 0.12);
            color: var(--primary);
        }
        .badge-secondary {
            background: rgba(0, 201, 167, 0.12);
            color: var(--secondary-dark);
        }
        .badge-accent {
            background: rgba(245, 158, 11, 0.15);
            color: #b45309;
        }
        .tag {
            display: inline-block;
            padding: 2px 12px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 500;
            background: var(--bg-soft);
            color: var(--text-light);
            margin: 2px 4px 2px 0;
        }
        .tag:hover { background: var(--primary); color: #fff; }

        /* ===== Header ===== */
        .header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 1px 12px rgba(0,0,0,0.03);
        }
        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text);
            letter-spacing: -0.03em;
        }
        .logo i { color: var(--primary); font-size: 1.6rem; }
        .logo span { color: var(--primary); }
        .logo:hover { color: var(--text); }
        .nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav a {
            padding: 8px 18px;
            border-radius: 50px;
            font-weight: 500;
            font-size: 0.92rem;
            color: var(--text-light);
            transition: var(--transition);
            position: relative;
        }
        .nav a i { margin-right: 6px; font-size: 0.9rem; }
        .nav a:hover { color: var(--primary); background: rgba(26, 92, 255, 0.06); }
        .nav a.active {
            color: #fff;
            background: var(--primary);
            box-shadow: 0 4px 14px rgba(26, 92, 255, 0.3);
        }
        .nav a.active:hover { color: #fff; background: var(--primary-dark); }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .nav-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--text);
            border-radius: 4px;
            transition: var(--transition);
        }
        .nav-toggle:hover span { background: var(--primary); }

        /* ===== Article Hero ===== */
        .article-hero {
            position: relative;
            min-height: 380px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background: var(--bg-dark) url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            isolation: isolate;
            padding: 80px 0 60px;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11,20,35,0.85) 0%, rgba(11,20,35,0.55) 100%);
            z-index: 1;
        }
        .article-hero .container-narrow {
            position: relative;
            z-index: 2;
        }
        .article-hero .hero-badge {
            display: inline-block;
            padding: 6px 20px;
            border-radius: 50px;
            background: rgba(255,255,255,0.12);
            backdrop-filter: blur(8px);
            color: var(--text-white);
            font-size: 0.82rem;
            font-weight: 500;
            margin-bottom: 20px;
            border: 1px solid rgba(255,255,255,0.08);
        }
        .article-hero h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.25;
            letter-spacing: -0.02em;
            margin-bottom: 16px;
            text-shadow: 0 2px 20px rgba(0,0,0,0.25);
        }
        .article-hero .hero-meta {
            display: flex;
            align-items: center;
            justify-content: center;
            flex-wrap: wrap;
            gap: 16px 24px;
            color: rgba(255,255,255,0.75);
            font-size: 0.92rem;
        }
        .article-hero .hero-meta i { margin-right: 6px; color: var(--secondary); }
        .article-hero .hero-meta span { display: inline-flex; align-items: center; }

        /* ===== Breadcrumb ===== */
        .breadcrumb {
            padding: 16px 0 0;
            font-size: 0.85rem;
            color: var(--text-light);
        }
        .breadcrumb a { color: var(--text-light); }
        .breadcrumb a:hover { color: var(--primary); }
        .breadcrumb span { color: var(--text); font-weight: 500; }
        .breadcrumb .sep { margin: 0 10px; color: var(--border); }

        /* ===== Article Content ===== */
        .article-main {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            padding: 48px 56px;
            margin-top: -40px;
            position: relative;
            z-index: 3;
        }
        .article-body {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text);
        }
        .article-body p {
            margin-bottom: 1.4em;
        }
        .article-body h2, .article-body h3 {
            margin-top: 1.8em;
            margin-bottom: 0.6em;
            font-weight: 700;
            color: var(--text);
            letter-spacing: -0.01em;
        }
        .article-body h2 { font-size: 1.6rem; }
        .article-body h3 { font-size: 1.25rem; }
        .article-body ul, .article-body ol {
            margin: 1em 0;
            padding-left: 1.6em;
        }
        .article-body ul li { list-style: disc; margin-bottom: 0.4em; }
        .article-body ol li { list-style: decimal; margin-bottom: 0.4em; }
        .article-body blockquote {
            border-left: 4px solid var(--primary);
            background: var(--bg-soft);
            padding: 16px 24px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 1.4em 0;
            font-style: italic;
            color: var(--text-light);
        }
        .article-body img {
            border-radius: var(--radius-sm);
            margin: 1.6em auto;
            box-shadow: var(--shadow);
        }
        .article-body a { font-weight: 500; text-decoration: underline; }

        /* ===== Article Footer Meta ===== */
        .article-footer-meta {
            margin-top: 40px;
            padding-top: 28px;
            border-top: 1px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
        }
        .article-footer-meta .tags {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 6px;
        }
        .article-footer-meta .tags i { color: var(--text-light); font-size: 0.85rem; margin-right: 4px; }
        .article-footer-meta .share {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .article-footer-meta .share a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--bg-soft);
            color: var(--text-light);
            font-size: 1rem;
            transition: var(--transition);
        }
        .article-footer-meta .share a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== Related Posts ===== */
        .related-section {
            background: var(--bg);
            padding: 80px 0;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
            margin-top: 40px;
        }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            border: 1px solid var(--border);
        }
        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .related-card .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            background: var(--bg-soft);
        }
        .related-card .card-body {
            padding: 20px 24px 24px;
        }
        .related-card .card-body .badge {
            margin-bottom: 10px;
        }
        .related-card .card-body h3 {
            font-size: 1.08rem;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
            color: var(--text);
        }
        .related-card .card-body h3 a { color: var(--text); }
        .related-card .card-body h3 a:hover { color: var(--primary); }
        .related-card .card-body p {
            font-size: 0.9rem;
            color: var(--text-light);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-top: 14px;
            font-size: 0.8rem;
            color: var(--text-light);
        }
        .related-card .card-meta i { margin-right: 4px; }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            padding: 72px 0;
            text-align: center;
            color: #fff;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: -0.02em;
        }
        .cta-section p {
            font-size: 1.05rem;
            opacity: 0.85;
            max-width: 560px;
            margin: 0 auto 28px;
        }
        .cta-section .btn {
            background: #fff;
            color: var(--primary);
            box-shadow: 0 4px 20px rgba(0,0,0,0.15);
        }
        .cta-section .btn:hover { background: var(--bg-soft); color: var(--primary-dark); transform: translateY(-2px); }

        /* ===== Not Found ===== */
        .not-found-box {
            text-align: center;
            padding: 60px 20px;
        }
        .not-found-box i {
            font-size: 3.6rem;
            color: var(--text-light);
            margin-bottom: 20px;
            opacity: 0.4;
        }
        .not-found-box h2 {
            font-size: 1.6rem;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .not-found-box p {
            color: var(--text-light);
            margin-bottom: 24px;
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-dark);
            color: var(--text-white);
            padding: 60px 0 30px;
        }
        .footer .logo { color: #fff; }
        .footer .logo i { color: var(--secondary); }
        .footer .logo span { color: var(--secondary); }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 40px;
        }
        .footer-brand p {
            margin-top: 16px;
            font-size: 0.92rem;
            color: rgba(255,255,255,0.6);
            line-height: 1.7;
            max-width: 320px;
        }
        .footer h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 18px;
            color: #fff;
            letter-spacing: 0.02em;
        }
        .footer ul li { margin-bottom: 10px; }
        .footer ul li a {
            color: rgba(255,255,255,0.55);
            font-size: 0.9rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .footer ul li a:hover { color: var(--secondary); padding-left: 4px; }
        .footer ul li a i { width: 18px; text-align: center; }
        .footer-divider {
            border: none;
            height: 1px;
            background: rgba(255,255,255,0.08);
            margin: 36px 0 24px;
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.4);
        }
        .footer-socials {
            display: flex;
            gap: 14px;
        }
        .footer-socials a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255,255,255,0.06);
            color: rgba(255,255,255,0.5);
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .footer-socials a:hover {
            background: var(--secondary);
            color: #fff;
            transform: translateY(-3px);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .related-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .header .container { height: 64px; }
            .nav {
                display: none;
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                background: rgba(255,255,255,0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 16px 24px 24px;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 20px 40px rgba(0,0,0,0.08);
                gap: 4px;
            }
            .nav.open { display: flex; }
            .nav a {
                width: 100%;
                padding: 12px 16px;
                border-radius: var(--radius-sm);
            }
            .nav-toggle { display: flex; }
            .article-hero { min-height: 280px; padding: 60px 0 40px; }
            .article-hero h1 { font-size: 1.8rem; }
            .article-main { padding: 28px 24px; margin-top: -20px; }
            .article-body { font-size: 1rem; }
            .section { padding: 48px 0; }
            .section-title { font-size: 1.5rem; }
            .related-grid { grid-template-columns: 1fr; gap: 20px; }
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .cta-section h2 { font-size: 1.5rem; }
            .cta-section { padding: 48px 0; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .article-hero h1 { font-size: 1.4rem; }
            .article-hero .hero-meta { font-size: 0.82rem; gap: 10px 16px; }
            .article-main { padding: 20px 16px; }
            .article-body { font-size: 0.95rem; }
            .article-footer-meta { flex-direction: column; align-items: flex-start; }
            .btn { padding: 10px 24px; font-size: 0.88rem; }
            .logo { font-size: 1.25rem; }
            .logo i { font-size: 1.3rem; }
            .related-card .card-img { height: 160px; }
        }