/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a2a3a;
            --primary-light: #2c3e50;
            --secondary: #e63946;
            --secondary-light: #ff6b6b;
            --accent: #f4a261;
            --accent-light: #f8c291;
            --bg: #f8f9fa;
            --bg-alt: #eef1f5;
            --card-bg: #ffffff;
            --text: #1a1a2e;
            --text-light: #6c757d;
            --text-white: #ffffff;
            --border: #e0e4e8;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-xs: 6px;
            --shadow: 0 8px 30px rgba(0,0,0,0.08);
            --shadow-hover: 0 16px 48px rgba(0,0,0,0.14);
            --shadow-nav: 0 4px 20px rgba(0,0,0,0.06);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --max-width: 1200px;
            --nav-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);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { text-decoration: none; color: inherit; transition: var(--transition); }
        button { cursor: pointer; font-family: inherit; border: none; background: none; transition: var(--transition); }
        input, textarea { font-family: inherit; font-size: 1rem; outline: none; transition: var(--transition); }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--primary); }
        h1 { font-size: clamp(2.2rem, 6vw, 3.8rem); }
        h2 { font-size: clamp(1.8rem, 4vw, 2.8rem); }
        h3 { font-size: clamp(1.3rem, 2.5vw, 1.8rem); }
        h4 { font-size: 1.25rem; }
        p { margin-bottom: 1rem; color: var(--text-light); }
        .container { width: 100%; max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }

        /* ===== 导航 (悬浮胶囊) ===== */
        .site-header {
            position: fixed; top: 16px; left: 0; right: 0; z-index: 1000;
            display: flex; justify-content: center; pointer-events: none;
        }
        .site-header .nav-inner {
            pointer-events: auto;
            display: flex; align-items: center; justify-content: space-between;
            width: 100%; max-width: var(--max-width);
            padding: 0 28px;
            height: var(--nav-height);
            background: rgba(255,255,255,0.88);
            backdrop-filter: blur(18px) saturate(1.6);
            -webkit-backdrop-filter: blur(18px) saturate(1.6);
            border-radius: 60px;
            box-shadow: var(--shadow-nav);
            border: 1px solid rgba(255,255,255,0.6);
        }
        .site-logo {
            display: flex; align-items: center; gap: 10px;
            font-size: 1.5rem; font-weight: 800; color: var(--primary);
            letter-spacing: -0.5px;
        }
        .site-logo i { color: var(--secondary); font-size: 1.6rem; }
        .site-logo span { background: linear-gradient(135deg, var(--primary) 40%, var(--secondary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .nav-links { display: flex; align-items: center; gap: 6px; }
        .nav-links a {
            padding: 8px 20px; border-radius: 40px;
            font-size: 0.95rem; font-weight: 500; color: var(--text-light);
            transition: var(--transition); position: relative;
        }
        .nav-links a:hover { color: var(--primary); background: rgba(26,42,58,0.06); }
        .nav-links a.active { color: var(--text-white); background: var(--primary); }
        .nav-cta {
            padding: 10px 28px; border-radius: 40px;
            background: var(--secondary); color: var(--text-white);
            font-weight: 600; font-size: 0.95rem;
            box-shadow: 0 4px 14px rgba(230,57,70,0.3);
        }
        .nav-cta:hover { background: #c1121f; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(230,57,70,0.4); }
        .nav-toggle { display: none; font-size: 1.6rem; color: var(--primary); padding: 4px 8px; background: transparent; }

        /* ===== 移动端导航 ===== */
        @media (max-width: 768px) {
            .site-header { top: 12px; padding: 0 12px; }
            .site-header .nav-inner { padding: 0 18px; height: 64px; border-radius: 40px; }
            .site-logo { font-size: 1.25rem; }
            .nav-links { display: none; position: absolute; top: calc(100% + 8px); left: 12px; right: 12px; background: rgba(255,255,255,0.97); backdrop-filter: blur(18px); border-radius: 24px; box-shadow: var(--shadow-hover); padding: 12px 8px; flex-direction: column; gap: 4px; border: 1px solid var(--border); }
            .nav-links.open { display: flex; }
            .nav-links a { width: 100%; text-align: center; padding: 12px 16px; font-size: 1.05rem; }
            .nav-links a.active { background: var(--primary); color: var(--text-white); }
            .nav-cta { display: none; }
            .nav-cta-mobile { display: block; width: 100%; text-align: center; padding: 12px; margin-top: 6px; border-radius: 40px; background: var(--secondary); color: var(--text-white); font-weight: 600; }
            .nav-toggle { display: block; }
            .nav-links .nav-cta-mobile { display: block; }
        }
        @media (min-width: 769px) {
            .nav-cta-mobile { display: none; }
        }

        /* ===== Hero ===== */
        .hero {
            position: relative; min-height: 100vh; display: flex; align-items: center;
            padding-top: calc(var(--nav-height) + 60px); padding-bottom: 80px;
            overflow: hidden; background: var(--primary);
        }
        .hero::before {
            content: ''; position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.35; mix-blend-mode: overlay;
        }
        .hero::after {
            content: ''; position: absolute; inset: 0;
            background: linear-gradient(135deg, rgba(26,42,58,0.92) 30%, rgba(26,42,58,0.6) 70%, rgba(230,57,70,0.2) 100%);
        }
        .hero .container { position: relative; z-index: 2; display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
        .hero-content h1 { color: var(--text-white); margin-bottom: 20px; font-weight: 900; letter-spacing: -1px; }
        .hero-content h1 span { background: linear-gradient(135deg, var(--accent), var(--secondary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .hero-content p { color: rgba(255,255,255,0.78); font-size: 1.2rem; max-width: 520px; margin-bottom: 32px; line-height: 1.8; }
        .hero-buttons { display: flex; gap: 16px; flex-wrap: wrap; }
        .hero-buttons .btn-primary { padding: 16px 40px; border-radius: 60px; background: var(--secondary); color: var(--text-white); font-size: 1.05rem; font-weight: 700; box-shadow: 0 8px 28px rgba(230,57,70,0.35); }
        .hero-buttons .btn-primary:hover { transform: translateY(-3px); box-shadow: 0 12px 36px rgba(230,57,70,0.45); background: #c1121f; }
        .hero-buttons .btn-outline { padding: 16px 40px; border-radius: 60px; border: 2px solid rgba(255,255,255,0.3); color: var(--text-white); font-size: 1.05rem; font-weight: 600; background: transparent; }
        .hero-buttons .btn-outline:hover { border-color: var(--accent); color: var(--accent); background: rgba(244,162,97,0.1); }
        .hero-visual { display: flex; justify-content: center; align-items: center; }
        .hero-visual .img-card { width: 100%; max-width: 480px; border-radius: 24px; overflow: hidden; box-shadow: 0 24px 64px rgba(0,0,0,0.3); border: 1px solid rgba(255,255,255,0.1); }
        .hero-visual img { width: 100%; height: auto; display: block; }
        .hero-stats { display: flex; gap: 32px; margin-top: 40px; flex-wrap: wrap; }
        .hero-stats .stat-item { text-align: center; }
        .hero-stats .stat-num { font-size: 2.2rem; font-weight: 900; color: var(--accent); line-height: 1.2; }
        .hero-stats .stat-label { font-size: 0.9rem; color: rgba(255,255,255,0.6); margin-top: 4px; }

        @media (max-width: 900px) {
            .hero .container { grid-template-columns: 1fr; gap: 40px; text-align: center; }
            .hero-content p { margin-left: auto; margin-right: auto; }
            .hero-buttons { justify-content: center; }
            .hero-stats { justify-content: center; }
            .hero-visual .img-card { max-width: 380px; margin: 0 auto; }
        }
        @media (max-width: 520px) {
            .hero { padding-top: calc(var(--nav-height) + 40px); padding-bottom: 50px; min-height: auto; }
            .hero-content h1 { font-size: 2rem; }
            .hero-content p { font-size: 1rem; }
            .hero-buttons .btn-primary, .hero-buttons .btn-outline { padding: 14px 28px; font-size: 0.95rem; width: 100%; text-align: center; }
            .hero-stats .stat-num { font-size: 1.6rem; }
        }

        /* ===== 通用板块 ===== */
        .section { padding: 100px 0; }
        .section-alt { background: var(--bg-alt); }
        .section-dark { background: var(--primary); color: var(--text-white); }
        .section-title { text-align: center; margin-bottom: 60px; }
        .section-title h2 { margin-bottom: 16px; }
        .section-title p { max-width: 620px; margin: 0 auto; font-size: 1.15rem; color: var(--text-light); }
        .section-dark .section-title h2 { color: var(--text-white); }
        .section-dark .section-title p { color: rgba(255,255,255,0.7); }

        /* ===== 卡片网格 ===== */
        .grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
        .grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
        .grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
        .card {
            background: var(--card-bg); border-radius: var(--radius);
            box-shadow: var(--shadow); overflow: hidden;
            transition: var(--transition); border: 1px solid var(--border);
        }
        .card:hover { box-shadow: var(--shadow-hover); transform: translateY(-6px); }
        .card-img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; display: block; }
        .card-body { padding: 24px; }
        .card-body h3 { margin-bottom: 10px; font-size: 1.2rem; }
        .card-body p { font-size: 0.95rem; color: var(--text-light); margin-bottom: 0; }
        .card-body .badge { display: inline-block; padding: 4px 14px; border-radius: 40px; font-size: 0.8rem; font-weight: 600; background: var(--bg-alt); color: var(--primary); margin-bottom: 12px; }
        .card-body .meta { display: flex; align-items: center; gap: 16px; font-size: 0.85rem; color: var(--text-light); margin-top: 14px; }
        .card-body .meta i { width: 16px; }

        @media (max-width: 1024px) {
            .grid-4 { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 768px) {
            .grid-3, .grid-2 { grid-template-columns: 1fr; }
            .grid-4 { grid-template-columns: repeat(2, 1fr); gap: 16px; }
            .section { padding: 60px 0; }
            .section-title { margin-bottom: 40px; }
        }
        @media (max-width: 520px) {
            .grid-4 { grid-template-columns: 1fr; }
        }

        /* ===== 特色 / 图标卡片 ===== */
        .feature-card { text-align: center; padding: 40px 28px; background: var(--card-bg); border-radius: var(--radius); box-shadow: var(--shadow); transition: var(--transition); border: 1px solid var(--border); }
        .feature-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-6px); }
        .feature-card .icon { width: 68px; height: 68px; margin: 0 auto 20px; border-radius: 20px; display: flex; align-items: center; justify-content: center; font-size: 1.8rem; color: var(--text-white); }
        .feature-card .icon.red { background: var(--secondary); }
        .feature-card .icon.blue { background: var(--primary); }
        .feature-card .icon.amber { background: var(--accent); }
        .feature-card h3 { margin-bottom: 12px; }
        .feature-card p { font-size: 0.95rem; color: var(--text-light); margin-bottom: 0; }

        /* ===== 按钮通用 ===== */
        .btn { display: inline-flex; align-items: center; gap: 10px; padding: 14px 32px; border-radius: 60px; font-weight: 600; font-size: 1rem; transition: var(--transition); border: none; }
        .btn-primary { background: var(--secondary); color: var(--text-white); box-shadow: 0 4px 16px rgba(230,57,70,0.3); }
        .btn-primary:hover { background: #c1121f; transform: translateY(-2px); box-shadow: 0 8px 28px rgba(230,57,70,0.4); }
        .btn-outline { border: 2px solid var(--primary); color: var(--primary); background: transparent; }
        .btn-outline:hover { background: var(--primary); color: var(--text-white); }
        .btn-accent { background: var(--accent); color: var(--primary); }
        .btn-accent:hover { background: #e08f4a; transform: translateY(-2px); }
        .btn-white { background: var(--text-white); color: var(--primary); }
        .btn-white:hover { background: var(--bg-alt); transform: translateY(-2px); }

        /* ===== 标签 / 徽章 ===== */
        .badge { display: inline-block; padding: 4px 16px; border-radius: 40px; font-size: 0.8rem; font-weight: 600; background: var(--bg-alt); color: var(--primary); }
        .badge-red { background: var(--secondary); color: var(--text-white); }
        .badge-accent { background: var(--accent); color: var(--primary); }
        .badge-outline { border: 1px solid var(--border); background: transparent; color: var(--text-light); }

        /* ===== 统计数字 ===== */
        .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
        .stat-card { text-align: center; padding: 32px 16px; background: rgba(255,255,255,0.06); border-radius: var(--radius); border: 1px solid rgba(255,255,255,0.08); backdrop-filter: blur(4px); }
        .stat-card .num { font-size: 2.8rem; font-weight: 900; color: var(--accent); line-height: 1.2; }
        .stat-card .label { font-size: 0.95rem; color: rgba(255,255,255,0.7); margin-top: 6px; }
        @media (max-width: 768px) { .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; } .stat-card .num { font-size: 2rem; } }

        /* ===== 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); box-shadow: var(--shadow); border: 1px solid var(--border); overflow: hidden; transition: var(--transition); }
        .faq-item:hover { box-shadow: var(--shadow-hover); }
        .faq-question { padding: 20px 24px; display: flex; justify-content: space-between; align-items: center; font-weight: 600; font-size: 1.05rem; color: var(--primary); cursor: pointer; background: transparent; width: 100%; text-align: left; }
        .faq-question i { color: var(--secondary); transition: var(--transition); font-size: 1.1rem; }
        .faq-item.open .faq-question i { transform: rotate(180deg); }
        .faq-answer { padding: 0 24px 20px; font-size: 0.95rem; color: var(--text-light); line-height: 1.7; display: none; }
        .faq-item.open .faq-answer { display: block; }
        .faq-answer p:last-child { margin-bottom: 0; }

        /* ===== CTA区块 ===== */
        .cta-block { background: linear-gradient(135deg, var(--primary) 0%, #0f1a2a 100%); border-radius: var(--radius); padding: 60px 48px; text-align: center; position: relative; overflow: hidden; border: 1px solid rgba(255,255,255,0.06); }
        .cta-block::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat; opacity: 0.08; mix-blend-mode: overlay; }
        .cta-block h2 { color: var(--text-white); font-size: clamp(1.8rem, 3.5vw, 2.6rem); margin-bottom: 16px; position: relative; }
        .cta-block p { color: rgba(255,255,255,0.7); max-width: 560px; margin: 0 auto 32px; font-size: 1.1rem; position: relative; }
        .cta-block .btn-group { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; position: relative; }

        /* ===== 页脚 ===== */
        .site-footer { background: var(--primary); color: rgba(255,255,255,0.7); padding: 60px 0 30px; }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; }
        .footer-brand .site-logo { color: var(--text-white); margin-bottom: 16px; }
        .footer-brand .site-logo span { -webkit-text-fill-color: var(--text-white); background: none; }
        .footer-brand p { font-size: 0.95rem; color: rgba(255,255,255,0.55); max-width: 320px; }
        .footer-col h4 { color: var(--text-white); margin-bottom: 18px; font-size: 1rem; font-weight: 700; }
        .footer-col a { display: block; color: rgba(255,255,255,0.55); font-size: 0.9rem; padding: 4px 0; }
        .footer-col a:hover { color: var(--accent); padding-left: 4px; }
        .footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); margin-top: 40px; padding-top: 24px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; font-size: 0.85rem; color: rgba(255,255,255,0.4); }
        .footer-social { display: flex; gap: 12px; }
        .footer-social a { display: 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; }
        .footer-social a:hover { background: var(--secondary); color: var(--text-white); }
        @media (max-width: 768px) { .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; } .footer-bottom { flex-direction: column; text-align: center; } }
        @media (max-width: 520px) { .footer-grid { grid-template-columns: 1fr; } }

        /* ===== 文章页样式 ===== */
        .article-banner { position: relative; min-height: 420px; display: flex; align-items: flex-end; padding-bottom: 60px; background: var(--primary); overflow: hidden; margin-top: 0; padding-top: calc(var(--nav-height) + 40px); }
        .article-banner::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat; opacity: 0.2; mix-blend-mode: overlay; }
        .article-banner::after { content: ''; position: absolute; inset: 0; background: linear-gradient(to top, rgba(26,42,58,0.95) 20%, rgba(26,42,58,0.5) 70%); }
        .article-banner .container { position: relative; z-index: 2; }
        .article-banner .badge { margin-bottom: 12px; }
        .article-banner h1 { color: var(--text-white); font-size: clamp(1.8rem, 4vw, 2.8rem); max-width: 800px; }
        .article-meta { display: flex; gap: 20px; color: rgba(255,255,255,0.65); font-size: 0.9rem; margin-top: 14px; flex-wrap: wrap; }
        .article-meta i { margin-right: 6px; }
        .article-content-wrap { padding: 60px 0 80px; background: var(--bg); }
        .article-content { max-width: 800px; margin: 0 auto; background: var(--card-bg); border-radius: var(--radius); box-shadow: var(--shadow); padding: 48px; border: 1px solid var(--border); }
        .article-content p { font-size: 1.08rem; line-height: 1.9; color: var(--text); margin-bottom: 1.2rem; }
        .article-content img { border-radius: var(--radius-sm); margin: 24px 0; width: 100%; }
        .article-content h2 { margin-top: 40px; margin-bottom: 16px; }
        .article-content h3 { margin-top: 28px; margin-bottom: 12px; }
        .article-not-found { text-align: center; padding: 80px 20px; }
        .article-not-found h2 { color: var(--secondary); margin-bottom: 16px; }
        .article-not-found p { font-size: 1.1rem; color: var(--text-light); }
        .article-not-found a { color: var(--secondary); font-weight: 600; }

        @media (max-width: 768px) { .article-content { padding: 28px 20px; } .article-banner { min-height: 300px; padding-bottom: 40px; padding-top: calc(var(--nav-height) + 20px); } }

        /* ===== 分类页样式 ===== */
        .category-banner { position: relative; min-height: 360px; display: flex; align-items: center; background: var(--primary); overflow: hidden; padding-top: calc(var(--nav-height) + 40px); }
        .category-banner::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat; opacity: 0.15; mix-blend-mode: overlay; }
        .category-banner::after { content: ''; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(26,42,58,0.9) 40%, rgba(26,42,58,0.5) 80%); }
        .category-banner .container { position: relative; z-index: 2; text-align: center; }
        .category-banner h1 { color: var(--text-white); font-size: clamp(2rem, 5vw, 3.2rem); margin-bottom: 12px; }
        .category-banner p { color: rgba(255,255,255,0.75); font-size: 1.15rem; max-width: 600px; margin: 0 auto; }

        /* ===== 面包屑 ===== */
        .breadcrumb { display: flex; align-items: center; gap: 8px; font-size: 0.9rem; color: var(--text-light); padding: 20px 0 0; }
        .breadcrumb a { color: var(--text-light); }
        .breadcrumb a:hover { color: var(--secondary); }
        .breadcrumb .sep { color: var(--border); }

        /* ===== 其他辅助 ===== */
        .text-center { text-align: center; }
        .mt-16 { margin-top: 16px; }
        .mt-24 { margin-top: 24px; }
        .mt-40 { margin-top: 40px; }
        .mb-16 { margin-bottom: 16px; }
        .mb-24 { margin-bottom: 24px; }
        .gap-16 { gap: 16px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .flex-wrap { flex-wrap: wrap; }
        .w-full { width: 100%; }

        /* ===== 列表样式 ===== */
        .content-list { display: flex; flex-direction: column; gap: 16px; }
        .list-item { display: flex; gap: 20px; background: var(--card-bg); border-radius: var(--radius-sm); box-shadow: var(--shadow); padding: 20px; transition: var(--transition); border: 1px solid var(--border); align-items: flex-start; }
        .list-item:hover { box-shadow: var(--shadow-hover); transform: translateX(4px); }
        .list-item .thumb { width: 100px; min-height: 76px; border-radius: var(--radius-xs); object-fit: cover; flex-shrink: 0; }
        .list-item .info { flex: 1; }
        .list-item .info h4 { font-size: 1.05rem; margin-bottom: 6px; }
        .list-item .info h4 a:hover { color: var(--secondary); }
        .list-item .info p { font-size: 0.9rem; color: var(--text-light); margin-bottom: 0; }
        .list-item .info .meta { font-size: 0.82rem; color: var(--text-light); margin-top: 8px; display: flex; gap: 16px; }
        @media (max-width: 520px) { .list-item { flex-direction: column; } .list-item .thumb { width: 100%; height: 140px; } }

        /* ===== 空状态 ===== */
        .empty-state { text-align: center; padding: 48px 20px; color: var(--text-light); background: var(--card-bg); border-radius: var(--radius-sm); border: 1px dashed var(--border); }
        .empty-state i { font-size: 2.4rem; color: var(--border); margin-bottom: 16px; }
        .empty-state p { font-size: 1.05rem; margin-bottom: 0; }

        /* ===== 分页占位 ===== */
        .pagination { display: flex; justify-content: center; gap: 8px; margin-top: 40px; }
        .pagination a, .pagination span { display: flex; align-items: center; justify-content: center; width: 44px; height: 44px; border-radius: 50%; background: var(--card-bg); border: 1px solid var(--border); color: var(--text); font-weight: 500; font-size: 0.95rem; }
        .pagination a:hover { background: var(--primary); color: var(--text-white); border-color: var(--primary); }
        .pagination .active { background: var(--secondary); color: var(--text-white); border-color: var(--secondary); }

        /* ===== 打印隐藏 ===== */
        @media print { .site-header, .site-footer, .nav-toggle, .hero-buttons, .cta-block { display: none !important; } }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b7a;
            --secondary: #1d3557;
            --secondary-light: #2b4d7a;
            --accent: #f4a261;
            --bg-white: #ffffff;
            --bg-light: #f8f9fa;
            --bg-dark: #1a1a2e;
            --text-dark: #1a1a2e;
            --text-body: #333333;
            --text-light: #666666;
            --text-white: #ffffff;
            --border-color: #e0e0e0;
            --border-light: #f0f0f0;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.1);
            --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.12);
            --shadow-hover: 0 12px 48px rgba(0, 0, 0, 0.18);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --container-max: 1200px;
            --header-height: 72px;
            --spacing-section: 80px;
            --spacing-element: 24px;
        }

        /* ===== 基础 Reset ===== */
        *,
        *::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-body);
            background: var(--bg-white);
            -webkit-font-smoothing: antialiased;
            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: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            transition: var(--transition);
        }
        button {
            cursor: pointer;
            background: none;
        }
        button:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--text-dark);
            line-height: 1.3;
            font-weight: 700;
        }

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

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0, 0, 0, 0.05);
            transition: var(--transition);
        }
        .site-header:hover {
            background: rgba(255, 255, 255, 0.98);
        }

        .nav-inner {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }

        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: var(--secondary);
            text-decoration: none;
            flex-shrink: 0;
            transition: var(--transition);
        }
        .site-logo i {
            color: var(--primary);
            font-size: 26px;
        }
        .site-logo span {
            background: linear-gradient(135deg, var(--secondary), var(--primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .site-logo:hover {
            opacity: 0.85;
            transform: scale(1.02);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-links a {
            padding: 8px 18px;
            border-radius: 100px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-body);
            text-decoration: none;
            transition: var(--transition);
            position: relative;
            white-space: nowrap;
        }
        .nav-links a:hover {
            background: rgba(230, 57, 70, 0.08);
            color: var(--primary);
        }
        .nav-links a.active {
            background: var(--primary);
            color: var(--text-white);
            box-shadow: 0 4px 16px rgba(230, 57, 70, 0.3);
        }
        .nav-links a.active:hover {
            background: var(--primary-dark);
            box-shadow: 0 6px 24px rgba(230, 57, 70, 0.4);
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            border-radius: 100px;
            background: var(--secondary);
            color: var(--text-white);
            font-weight: 600;
            font-size: 14px;
            text-decoration: none;
            transition: var(--transition);
            flex-shrink: 0;
            box-shadow: 0 4px 12px rgba(29, 53, 87, 0.2);
        }
        .nav-cta i {
            font-size: 15px;
        }
        .nav-cta:hover {
            background: var(--secondary-light);
            color: var(--text-white);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(29, 53, 87, 0.3);
        }
        .nav-cta-mobile {
            display: none !important;
        }

        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: var(--bg-light);
            color: var(--text-dark);
            font-size: 20px;
            transition: var(--transition);
        }
        .nav-toggle:hover {
            background: var(--border-color);
        }

        /* ===== 移动端导航 ===== */
        @media (max-width: 768px) {
            .nav-links {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 16px 24px 24px;
                gap: 6px;
                border-bottom: 1px solid var(--border-light);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
                border-radius: 0 0 var(--radius-md) var(--radius-md);
            }
            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: all;
            }
            .nav-links a {
                width: 100%;
                padding: 12px 20px;
                font-size: 16px;
                border-radius: var(--radius-sm);
            }
            .nav-links a.active {
                background: var(--primary);
                color: var(--text-white);
            }
            .nav-cta {
                display: none;
            }
            .nav-cta-mobile {
                display: flex !important;
                align-items: center;
                justify-content: center;
                gap: 8px;
                margin-top: 8px;
                background: var(--secondary) !important;
                color: var(--text-white) !important;
                font-weight: 600;
                border-radius: var(--radius-sm) !important;
                padding: 14px 20px !important;
            }
            .nav-cta-mobile i {
                font-size: 16px;
            }
            .nav-cta-mobile:hover {
                background: var(--secondary-light) !important;
            }
            .nav-toggle {
                display: flex;
            }
        }

        @media (max-width: 520px) {
            .site-logo {
                font-size: 18px;
            }
            .site-logo i {
                font-size: 22px;
            }
            .nav-inner {
                padding: 0 16px;
            }
            .nav-links {
                padding: 12px 16px 20px;
            }
            .nav-links a {
                padding: 10px 16px;
                font-size: 15px;
            }
        }

        /* ===== Hero / 页面横幅 ===== */
        .page-hero {
            position: relative;
            padding: 80px 0 72px;
            background: var(--secondary);
            background-image: linear-gradient(135deg, rgba(26, 26, 46, 0.92), rgba(29, 53, 87, 0.88)), url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            text-align: center;
            overflow: hidden;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 80px;
            background: linear-gradient(to top, var(--bg-white), transparent);
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
        }
        .page-hero h1 {
            font-size: 44px;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .page-hero h1 i {
            color: var(--primary-light);
            margin-right: 12px;
        }
        .page-hero p {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 700px;
            margin: 0 auto 28px;
            line-height: 1.8;
        }
        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px;
        }
        .hero-tags span {
            padding: 6px 20px;
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(4px);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 100px;
            color: var(--text-white);
            font-size: 14px;
            font-weight: 500;
            transition: var(--transition);
        }
        .hero-tags span:hover {
            background: rgba(255, 255, 255, 0.25);
            transform: translateY(-2px);
        }

        @media (max-width: 768px) {
            .page-hero {
                padding: 60px 0 56px;
            }
            .page-hero h1 {
                font-size: 32px;
            }
            .page-hero p {
                font-size: 16px;
                padding: 0 12px;
            }
            .hero-tags span {
                font-size: 13px;
                padding: 4px 16px;
            }
        }
        @media (max-width: 520px) {
            .page-hero h1 {
                font-size: 26px;
            }
            .page-hero p {
                font-size: 15px;
            }
            .hero-tags {
                gap: 8px;
            }
            .hero-tags span {
                font-size: 12px;
                padding: 4px 12px;
            }
        }

        /* ===== 通用板块标题 ===== */
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 {
            font-size: 32px;
            font-weight: 800;
            color: var(--text-dark);
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .section-title h2 i {
            color: var(--primary);
            margin-right: 8px;
        }
        .section-title p {
            font-size: 16px;
            color: var(--text-light);
            max-width: 600px;
            margin: 0 auto;
        }
        .section-title .title-bar {
            width: 60px;
            height: 4px;
            background: var(--primary);
            border-radius: 4px;
            margin: 16px auto 0;
        }

        @media (max-width: 768px) {
            .section-title h2 {
                font-size: 26px;
            }
            .section-title p {
                font-size: 15px;
            }
            .section-title {
                margin-bottom: 32px;
            }
        }
        @media (max-width: 520px) {
            .section-title h2 {
                font-size: 22px;
            }
        }

        /* ===== 赛事分类卡片 ===== */
        .section-categories {
            padding: var(--spacing-section) 0;
            background: var(--bg-white);
        }
        .category-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .category-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            cursor: default;
        }
        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: transparent;
        }
        .category-card .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: 0;
            transition: var(--transition);
        }
        .category-card:hover .card-img {
            transform: scale(1.05);
        }
        .category-card .card-body {
            padding: 20px 20px 24px;
        }
        .category-card .card-body h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-dark);
        }
        .category-card .card-body h3 i {
            color: var(--primary);
            margin-right: 6px;
            font-size: 18px;
        }
        .category-card .card-body p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .category-card .card-tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 100px;
            font-size: 12px;
            font-weight: 600;
            background: var(--bg-light);
            color: var(--text-light);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .category-card:hover .card-tag {
            background: var(--primary);
            color: var(--text-white);
            border-color: var(--primary);
        }

        @media (max-width: 1024px) {
            .category-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .category-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .category-card .card-img {
                height: 180px;
            }
            .category-card .card-body {
                padding: 16px 16px 20px;
            }
            .category-card .card-body h3 {
                font-size: 18px;
            }
        }

        /* ===== 热门赛事 ===== */
        .section-popular {
            padding: var(--spacing-section) 0;
            background: var(--bg-light);
        }
        .popular-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .popular-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .popular-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .popular-card .card-img-wrap {
            position: relative;
            height: 200px;
            overflow: hidden;
        }
        .popular-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
            transition: var(--transition);
        }
        .popular-card:hover .card-img-wrap img {
            transform: scale(1.06);
        }
        .popular-card .card-badge {
            position: absolute;
            top: 14px;
            left: 14px;
            padding: 4px 14px;
            border-radius: 100px;
            font-size: 12px;
            font-weight: 700;
            background: var(--primary);
            color: var(--text-white);
            box-shadow: 0 4px 12px rgba(230, 57, 70, 0.3);
        }
        .popular-card .card-body {
            padding: 18px 20px 22px;
        }
        .popular-card .card-body h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-dark);
        }
        .popular-card .card-body .meta {
            display: flex;
            gap: 16px;
            font-size: 13px;
            color: var(--text-light);
            margin-bottom: 10px;
        }
        .popular-card .card-body .meta i {
            margin-right: 4px;
            color: var(--primary-light);
        }
        .popular-card .card-body p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.7;
        }
        .popular-card .card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 20px 18px;
            border-top: 1px solid var(--border-light);
        }
        .popular-card .card-footer .price {
            font-size: 18px;
            font-weight: 800;
            color: var(--primary);
        }
        .popular-card .card-footer .price small {
            font-size: 12px;
            font-weight: 400;
            color: var(--text-light);
        }
        .popular-card .card-footer .btn-sm {
            padding: 6px 18px;
            border-radius: 100px;
            font-size: 13px;
            font-weight: 600;
            background: var(--secondary);
            color: var(--text-white);
            transition: var(--transition);
        }
        .popular-card .card-footer .btn-sm:hover {
            background: var(--secondary-light);
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(29, 53, 87, 0.25);
        }

        @media (max-width: 1024px) {
            .popular-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .popular-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .popular-card .card-img-wrap {
                height: 180px;
            }
            .popular-card .card-body {
                padding: 14px 16px 18px;
            }
            .popular-card .card-body h3 {
                font-size: 16px;
            }
            .popular-card .card-footer {
                padding: 10px 16px 14px;
                flex-wrap: wrap;
                gap: 8px;
            }
        }

        /* ===== 数据统计 ===== */
        .section-stats {
            padding: 60px 0;
            background: var(--secondary);
            background-image: linear-gradient(135deg, rgba(26, 26, 46, 0.94), rgba(29, 53, 87, 0.9)), url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            text-align: center;
        }
        .stats-item .number {
            font-size: 44px;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.2;
            margin-bottom: 6px;
            letter-spacing: -1px;
        }
        .stats-item .number span {
            color: var(--primary-light);
        }
        .stats-item .label {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.75);
            font-weight: 500;
        }
        .stats-item .icon {
            font-size: 32px;
            color: var(--accent);
            margin-bottom: 12px;
        }

        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .stats-item .number {
                font-size: 36px;
            }
        }
        @media (max-width: 520px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .stats-item .number {
                font-size: 30px;
            }
            .stats-item .label {
                font-size: 13px;
            }
        }

        /* ===== 赛事服务 ===== */
        .section-services {
            padding: var(--spacing-section) 0;
            background: var(--bg-white);
        }
        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .service-card {
            padding: 36px 28px;
            border-radius: var(--radius-md);
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            text-align: center;
        }
        .service-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: transparent;
        }
        .service-card .icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: var(--bg-light);
            font-size: 28px;
            color: var(--primary);
            transition: var(--transition);
        }
        .service-card:hover .icon {
            background: var(--primary);
            color: var(--text-white);
            transform: scale(1.1) rotate(-6deg);
        }
        .service-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-dark);
        }
        .service-card p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.8;
        }

        @media (max-width: 768px) {
            .services-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .service-card {
                padding: 28px 20px;
            }
            .service-card h3 {
                font-size: 18px;
            }
        }
        @media (max-width: 520px) {
            .services-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .service-card {
                padding: 24px 16px;
            }
            .service-card .icon {
                width: 54px;
                height: 54px;
                font-size: 24px;
            }
        }

        /* ===== FAQ ===== */
        .section-faq {
            padding: var(--spacing-section) 0;
            background: var(--bg-light);
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-md);
        }
        .faq-question {
            padding: 18px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-dark);
            cursor: pointer;
            transition: var(--transition);
            background: none;
            width: 100%;
            text-align: left;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question i {
            font-size: 14px;
            color: var(--text-light);
            transition: var(--transition);
            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;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }
        .faq-answer p {
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.8;
        }

        @media (max-width: 520px) {
            .faq-question {
                padding: 14px 16px;
                font-size: 15px;
            }
            .faq-answer {
                padding: 0 16px;
            }
            .faq-item.active .faq-answer {
                padding: 0 16px 16px;
            }
        }

        /* ===== CTA ===== */
        .section-cta {
            padding: 64px 0;
            background: var(--secondary);
            background-image: linear-gradient(135deg, rgba(26, 26, 46, 0.92), rgba(29, 53, 87, 0.88)), url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            text-align: center;
        }
        .section-cta h2 {
            font-size: 34px;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 12px;
        }
        .section-cta p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 580px;
            margin: 0 auto 28px;
        }
        .cta-buttons {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
        }
        .btn-primary {
            padding: 14px 36px;
            border-radius: 100px;
            font-size: 16px;
            font-weight: 700;
            background: var(--primary);
            color: var(--text-white);
            border: none;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 6px 20px rgba(230, 57, 70, 0.3);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            color: var(--text-white);
            transform: translateY(-3px);
            box-shadow: 0 10px 32px rgba(230, 57, 70, 0.4);
        }
        .btn-secondary {
            padding: 14px 36px;
            border-radius: 100px;
            font-size: 16px;
            font-weight: 700;
            background: rgba(255, 255, 255, 0.15);
            color: var(--text-white);
            border: 2px solid rgba(255, 255, 255, 0.3);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.25);
            color: var(--text-white);
            transform: translateY(-3px);
            border-color: rgba(255, 255, 255, 0.6);
        }

        @media (max-width: 768px) {
            .section-cta h2 {
                font-size: 28px;
            }
            .section-cta p {
                font-size: 15px;
                padding: 0 12px;
            }
            .btn-primary,
            .btn-secondary {
                padding: 12px 28px;
                font-size: 15px;
            }
        }
        @media (max-width: 520px) {
            .section-cta {
                padding: 48px 0;
            }
            .section-cta h2 {
                font-size: 24px;
            }
            .cta-buttons {
                flex-direction: column;
                align-items: center;
            }
            .btn-primary,
            .btn-secondary {
                width: 100%;
                max-width: 280px;
                justify-content: center;
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 56px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand .site-logo {
            color: var(--text-white);
            font-size: 22px;
            margin-bottom: 16px;
        }
        .footer-brand .site-logo i {
            color: var(--primary-light);
        }
        .footer-brand .site-logo span {
            -webkit-text-fill-color: var(--text-white);
            background: none;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.6);
            max-width: 320px;
        }
        .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            color: rgba(255, 255, 255, 0.7);
            font-size: 18px;
            margin-right: 8px;
            transition: var(--transition);
        }
        .footer-social a:hover {
            background: var(--primary);
            color: var(--text-white);
            transform: translateY(-3px);
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }
        .footer-col h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 30px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
        }
        .footer-col a {
            display: block;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            padding: 6px 0;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }
        .footer-bottom {
            padding: 24px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }

        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .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;
            }
            .footer-col h4 {
                font-size: 15px;
            }
        }

        /* ===== 通用辅助 ===== */
        .text-center {
            text-align: center;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .mb-24 {
            margin-bottom: 24px;
        }
        .gap-8 {
            gap: 8px;
        }
        .gap-12 {
            gap: 12px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }

        /* ===== 滚动动画 ===== */
        .fade-up {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        .fade-up.visible {
            opacity: 1;
            transform: translateY(0);
        }

        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                transition-duration: 0.01ms !important;
            }
            .fade-up {
                opacity: 1;
                transform: none;
            }
        }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #f1c0c4;
            --secondary: #1d3557;
            --secondary-light: #457b9d;
            --accent: #f4a261;
            --bg: #f8f9fa;
            --bg-white: #ffffff;
            --bg-dark: #1a1a2e;
            --text: #1a1a2e;
            --text-light: #6c757d;
            --text-white: #ffffff;
            --border: #e9ecef;
            --border-light: #f0f0f0;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-xs: 6px;
            --shadow: 0 4px 24px rgba(0,0,0,0.06);
            --shadow-hover: 0 12px 40px rgba(0,0,0,0.12);
            --shadow-lg: 0 20px 60px rgba(0,0,0,0.15);
            --transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --max-width: 1200px;
            --nav-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; font-size: 16px; }
        body {
            font-family: var(--font);
            color: var(--text);
            background: var(--bg);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary); }
        img { max-width: 100%; height: auto; display: block; }
        button, input, textarea { font-family: inherit; font-size: inherit; border: none; outline: none; }
        button { cursor: pointer; background: none; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text); }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header / Navigation ===== */
        .site-header {
            position: fixed;
            top: 20px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 1000;
            width: calc(100% - 48px);
            max-width: 1100px;
            background: rgba(255,255,255,0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-radius: 60px;
            box-shadow: 0 4px 30px rgba(0,0,0,0.08);
            padding: 0 8px;
            border: 1px solid rgba(255,255,255,0.3);
            transition: var(--transition);
        }
        .site-header.scrolled {
            background: rgba(255,255,255,0.96);
            box-shadow: 0 8px 40px rgba(0,0,0,0.10);
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            padding: 0 16px;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
        }
        .site-logo i { font-size: 1.5rem; color: var(--primary); }
        .site-logo span { background: linear-gradient(135deg, var(--primary), var(--secondary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .nav-links a {
            padding: 8px 20px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text);
            transition: var(--transition);
            position: relative;
        }
        .nav-links a:hover { color: var(--primary); background: rgba(230,57,70,0.08); }
        .nav-links a.active { color: var(--text-white); background: var(--primary); }
        .nav-links a.active:hover { color: var(--text-white); background: var(--primary-dark); }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 28px;
            border-radius: 30px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: var(--text-white);
            font-weight: 700;
            font-size: 0.9rem;
            transition: var(--transition);
            box-shadow: 0 4px 16px rgba(230,57,70,0.3);
            white-space: nowrap;
        }
        .nav-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(230,57,70,0.4); color: var(--text-white); }
        .nav-cta-mobile { display: none; }
        .nav-toggle { display: none; font-size: 1.5rem; color: var(--text); padding: 8px; }

        /* ===== Article Banner ===== */
        .article-hero {
            position: relative;
            padding: 140px 0 80px;
            background: linear-gradient(135deg, rgba(26,26,46,0.85), rgba(29,53,87,0.80)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            color: var(--text-white);
            text-align: center;
            margin-top: 0;
        }
        .article-hero .container { position: relative; z-index: 2; }
        .article-hero .category-badge {
            display: inline-block;
            padding: 6px 20px;
            border-radius: 30px;
            background: var(--primary);
            color: var(--text-white);
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 1px;
            margin-bottom: 20px;
            text-transform: uppercase;
        }
        .article-hero h1 {
            font-size: clamp(1.8rem, 5vw, 3rem);
            font-weight: 800;
            max-width: 900px;
            margin: 0 auto 20px;
            line-height: 1.3;
            color: var(--text-white);
        }
        .article-hero .meta {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 20px;
            font-size: 0.95rem;
            color: rgba(255,255,255,0.75);
        }
        .article-hero .meta i { margin-right: 6px; }
        .article-hero .meta span { display: inline-flex; align-items: center; }
        .article-hero .desc {
            max-width: 700px;
            margin: 24px auto 0;
            font-size: 1.1rem;
            color: rgba(255,255,255,0.85);
            line-height: 1.7;
        }

        /* ===== Article Content ===== */
        .article-main {
            padding: 60px 0 80px;
            background: var(--bg);
        }
        .article-body {
            max-width: 820px;
            margin: 0 auto;
            background: var(--bg-white);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 48px 56px;
        }
        .article-body .content {
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--text);
        }
        .article-body .content p { margin-bottom: 1.5em; }
        .article-body .content h2 { font-size: 1.6rem; margin: 2em 0 0.8em; color: var(--secondary); }
        .article-body .content h3 { font-size: 1.3rem; margin: 1.8em 0 0.6em; color: var(--secondary); }
        .article-body .content ul, .article-body .content ol { margin: 1em 0 1.5em 2em; }
        .article-body .content li { margin-bottom: 0.5em; list-style: disc; }
        .article-body .content blockquote {
            border-left: 4px solid var(--primary);
            padding: 16px 24px;
            margin: 1.5em 0;
            background: rgba(230,57,70,0.04);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-light);
            font-style: italic;
        }
        .article-body .content img { border-radius: var(--radius-sm); margin: 1.5em 0; box-shadow: var(--shadow); }
        .article-body .content a { color: var(--primary); text-decoration: underline; }
        .article-body .content a:hover { color: var(--primary-dark); }
        .article-body .content code {
            background: #f1f3f5;
            padding: 2px 10px;
            border-radius: var(--radius-xs);
            font-size: 0.9em;
            color: var(--primary-dark);
        }
        .article-body .content pre {
            background: #1a1a2e;
            color: #f8f9fa;
            padding: 24px;
            border-radius: var(--radius-sm);
            overflow-x: auto;
            font-size: 0.9rem;
            margin: 1.5em 0;
        }
        .article-body .content pre code { background: transparent; color: inherit; padding: 0; }

        /* ===== Article Tags ===== */
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 40px;
            padding-top: 32px;
            border-top: 1px solid var(--border);
        }
        .article-tags .tag {
            padding: 6px 18px;
            border-radius: 30px;
            background: var(--bg);
            color: var(--text-light);
            font-size: 0.85rem;
            font-weight: 500;
            transition: var(--transition);
            border: 1px solid var(--border);
        }
        .article-tags .tag:hover { background: var(--primary); color: var(--text-white); border-color: var(--primary); }

        /* ===== Related Posts ===== */
        .related-section {
            padding: 60px 0;
            background: var(--bg-white);
        }
        .related-section .section-title {
            text-align: center;
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 40px;
            color: var(--secondary);
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .related-card {
            background: var(--bg);
            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 {
            height: 200px;
            background: var(--border) center/cover no-repeat;
            position: relative;
        }
        .related-card .card-img .cat-tag {
            position: absolute;
            top: 16px;
            left: 16px;
            padding: 4px 14px;
            border-radius: 30px;
            background: var(--primary);
            color: var(--text-white);
            font-size: 0.75rem;
            font-weight: 600;
        }
        .related-card .card-body { padding: 24px; }
        .related-card .card-body h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 8px; 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; }
        .related-card .card-body .meta { font-size: 0.8rem; color: var(--text-light); margin-top: 12px; display: flex; gap: 16px; }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 70px 0;
            background: var(--bg);
        }
        .faq-section .section-title {
            text-align: center;
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 45px;
            color: var(--secondary);
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { box-shadow: var(--shadow-hover); }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 28px;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition);
            color: var(--text);
            background: none;
            width: 100%;
            text-align: left;
        }
        .faq-question i { transition: var(--transition); color: var(--primary); font-size: 1.1rem; }
        .faq-item.active .faq-question i { transform: rotate(180deg); }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 28px;
            color: var(--text-light);
            line-height: 1.7;
            font-size: 0.95rem;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 28px 24px;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 70px 0;
            background: linear-gradient(135deg, var(--secondary), #0d1b2a);
            color: var(--text-white);
            text-align: center;
        }
        .cta-section h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); font-weight: 800; color: var(--text-white); margin-bottom: 16px; }
        .cta-section p { font-size: 1.1rem; color: rgba(255,255,255,0.8); max-width: 600px; margin: 0 auto 32px; }
        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 44px;
            border-radius: 50px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: var(--text-white);
            font-weight: 700;
            font-size: 1.05rem;
            transition: var(--transition);
            box-shadow: 0 6px 30px rgba(230,57,70,0.4);
        }
        .cta-btn:hover { transform: translateY(-3px); box-shadow: 0 12px 48px rgba(230,57,70,0.5); color: var(--text-white); }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.8);
            padding: 60px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        .footer-brand .site-logo { color: var(--text-white); font-size: 1.4rem; margin-bottom: 16px; display: inline-flex; }
        .footer-brand .site-logo i { color: var(--primary); }
        .footer-brand .site-logo span { -webkit-text-fill-color: var(--text-white); background: none; }
        .footer-brand p { font-size: 0.9rem; line-height: 1.7; color: rgba(255,255,255,0.6); max-width: 300px; }
        .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: rgba(255,255,255,0.08);
            color: rgba(255,255,255,0.7);
            font-size: 1.2rem;
            transition: var(--transition);
            margin-right: 10px;
        }
        .footer-social a:hover { background: var(--primary); color: var(--text-white); transform: translateY(-3px); }
        .footer-col h4 { color: var(--text-white); font-size: 1rem; font-weight: 700; margin-bottom: 20px; }
        .footer-col a {
            display: block;
            color: rgba(255,255,255,0.6);
            font-size: 0.9rem;
            padding: 6px 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;
            flex-wrap: wrap;
            gap: 16px;
            padding: 28px 0;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.5);
        }

        /* ===== Not Found ===== */
        .not-found {
            text-align: center;
            padding: 120px 24px 80px;
            max-width: 600px;
            margin: 0 auto;
        }
        .not-found i { font-size: 4rem; color: var(--primary-light); margin-bottom: 24px; }
        .not-found h2 { font-size: 2rem; margin-bottom: 16px; color: var(--secondary); }
        .not-found p { color: var(--text-light); margin-bottom: 24px; }
        .not-found .back-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            border-radius: 30px;
            background: var(--primary);
            color: var(--text-white);
            font-weight: 600;
            transition: var(--transition);
        }
        .not-found .back-btn:hover { background: var(--primary-dark); color: var(--text-white); transform: translateY(-2px); }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .related-grid { grid-template-columns: repeat(2, 1fr); }
            .article-body { padding: 36px 32px; }
        }

        @media (max-width: 768px) {
            .site-header { top: 12px; width: calc(100% - 24px); border-radius: 40px; }
            .nav-links { display: none; flex-direction: column; background: rgba(255,255,255,0.98); backdrop-filter: blur(20px); position: absolute; top: calc(var(--nav-height) + 8px); left: 12px; right: 12px; border-radius: 24px; padding: 16px; box-shadow: var(--shadow-lg); border: 1px solid var(--border); }
            .nav-links.open { display: flex; }
            .nav-links a { padding: 12px 20px; width: 100%; text-align: center; }
            .nav-cta { display: none; }
            .nav-cta-mobile { display: flex !important; align-items: center; justify-content: center; gap: 8px; padding: 14px 20px; border-radius: 30px; background: linear-gradient(135deg, var(--primary), var(--primary-dark)); color: var(--text-white); font-weight: 700; font-size: 0.9rem; margin-top: 8px; }
            .nav-cta-mobile i { font-size: 1rem; }
            .nav-toggle { display: block; }
            .article-hero { padding: 110px 0 60px; }
            .article-hero h1 { font-size: 1.6rem; }
            .article-body { padding: 28px 20px; border-radius: var(--radius-sm); }
            .article-body .content { font-size: 1rem; }
            .related-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .faq-question { padding: 16px 20px; font-size: 0.95rem; }
            .faq-answer { padding: 0 20px; }
            .faq-item.active .faq-answer { padding: 0 20px 20px; }
        }

        @media (max-width: 520px) {
            :root { --nav-height: 64px; }
            .site-logo { font-size: 1.15rem; }
            .site-logo i { font-size: 1.2rem; }
            .article-hero h1 { font-size: 1.35rem; }
            .article-hero .desc { font-size: 0.95rem; }
            .cta-section h2 { font-size: 1.4rem; }
            .cta-btn { padding: 14px 32px; font-size: 0.95rem; }
            .related-card .card-img { height: 160px; }
        }

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