/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a3a5c;
            --primary-light: #2a5a8c;
            --primary-dark: #0f2440;
            --accent: #f0b34b;
            --accent-light: #f5c86e;
            --accent-dark: #d4942e;
            --bg-body: #f7f9fc;
            --bg-card: #ffffff;
            --bg-dark: #0f2440;
            --bg-section-alt: #eef3f9;
            --text-primary: #1a2a3a;
            --text-secondary: #4a5a6a;
            --text-muted: #8a9aaa;
            --text-on-dark: #f0f4f8;
            --text-on-accent: #1a2a3a;
            --border-light: #e2e8f0;
            --border-medium: #c8d4e0;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(26, 42, 60, 0.06);
            --shadow-md: 0 6px 24px rgba(26, 42, 60, 0.10);
            --shadow-lg: 0 16px 48px rgba(26, 42, 60, 0.14);
            --shadow-hover: 0 20px 56px rgba(26, 42, 60, 0.18);
            --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --header-top-h: 56px;
            --header-nav-h: 48px;
            --header-total: calc(var(--header-top-h) + var(--header-nav-h));
            --max-width: 1200px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-top: var(--header-total);
        }
        a { color: var(--primary-light); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary); text-decoration: none; }
        a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 2px; }
        img { max-width: 100%; height: auto; display: block; }
        ul, ol { list-style: none; padding: 0; margin: 0; }
        button, input, select, textarea { font-family: inherit; font-size: inherit; }
        button { cursor: pointer; border: none; background: none; }
        .container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; width: 100%; }

        /* ===== 辅助 ===== */
        .section-padding { padding: 80px 0; }
        .section-padding-sm { padding: 56px 0; }
        .text-center { text-align: center; }
        .text-accent { color: var(--accent); }
        .mb-12 { margin-bottom: 12px; }
        .mb-24 { margin-bottom: 24px; }
        .mb-32 { margin-bottom: 32px; }
        .mb-40 { margin-bottom: 40px; }
        .mb-48 { margin-bottom: 48px; }
        .mt-24 { margin-top: 24px; }
        .mt-40 { margin-top: 40px; }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex; align-items: center; gap: 8px;
            padding: 12px 32px; border-radius: 50px;
            font-weight: 600; font-size: 15px; line-height: 1.4;
            transition: var(--transition); border: 2px solid transparent;
            text-align: center; justify-content: center;
        }
        .btn-primary {
            background: var(--accent); color: var(--text-on-accent); border-color: var(--accent);
        }
        .btn-primary:hover {
            background: var(--accent-dark); border-color: var(--accent-dark); color: #fff;
            transform: translateY(-2px); box-shadow: 0 8px 24px rgba(240, 179, 75, 0.35);
        }
        .btn-outline {
            background: transparent; color: var(--text-on-dark); border-color: rgba(255,255,255,0.5);
        }
        .btn-outline:hover {
            background: rgba(255,255,255,0.12); border-color: #fff; color: #fff;
            transform: translateY(-2px);
        }
        .btn-lg { padding: 16px 44px; font-size: 17px; }
        .btn-sm { padding: 8px 20px; font-size: 13px; }
        .btn-primary:focus-visible, .btn-outline:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

        /* ===== 徽章 / 标签 ===== */
        .badge {
            display: inline-block; padding: 4px 14px; border-radius: 50px;
            font-size: 12px; font-weight: 600; letter-spacing: 0.3px;
            background: var(--accent); color: var(--text-on-accent);
        }
        .badge-sm { padding: 2px 10px; font-size: 11px; }
        .badge-outline { background: transparent; border: 1.5px solid var(--accent); color: var(--accent); }
        .tag {
            display: inline-block; padding: 3px 12px; border-radius: var(--radius-sm);
            font-size: 12px; background: var(--bg-section-alt); color: var(--text-secondary);
            transition: var(--transition);
        }
        .tag:hover { background: var(--primary-light); color: #fff; }

        /* ===== Header 双层导航 ===== */
        .site-header {
            position: fixed; top: 0; left: 0; width: 100%; z-index: 1000;
            background: #fff; box-shadow: 0 2px 20px rgba(0,0,0,0.06);
            transition: var(--transition);
        }
        .site-header.scrolled { box-shadow: 0 4px 32px rgba(0,0,0,0.10); }

        /* 顶栏 */
        .header-top {
            height: var(--header-top-h); display: flex; align-items: center;
            border-bottom: 1px solid var(--border-light);
            background: #fff;
        }
        .header-top .container {
            display: flex; align-items: center; justify-content: space-between; gap: 16px;
        }
        .logo {
            display: flex; align-items: center; gap: 8px; font-weight: 800;
            font-size: 22px; color: var(--primary); letter-spacing: -0.3px;
            flex-shrink: 0;
        }
        .logo i { color: var(--accent); font-size: 26px; }
        .logo:hover { color: var(--primary); opacity: 0.9; }
        .header-top-right {
            display: flex; align-items: center; gap: 16px; flex-shrink: 0;
        }
        .header-search {
            display: flex; align-items: center; background: var(--bg-body);
            border-radius: 50px; padding: 0 16px; border: 1px solid var(--border-light);
            transition: var(--transition); height: 36px; width: 200px;
        }
        .header-search:focus-within { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(240,179,75,0.15); }
        .header-search input {
            border: none; background: transparent; padding: 6px 0; width: 1px; flex: 1;
            font-size: 13px; color: var(--text-primary); outline: none;
        }
        .header-search input::placeholder { color: var(--text-muted); }
        .header-search i { color: var(--text-muted); font-size: 14px; }
        .header-cta { flex-shrink: 0; }
        .header-cta .btn { padding: 8px 24px; font-size: 13px; }

        /* 导航栏 */
        .header-nav {
            height: var(--header-nav-h); display: flex; align-items: center;
            background: var(--primary); overflow: hidden;
        }
        .header-nav .container {
            display: flex; align-items: center; gap: 4px; height: 100%; overflow-x: auto;
            scrollbar-width: none; -ms-overflow-style: none;
        }
        .header-nav .container::-webkit-scrollbar { display: none; }
        .nav-link {
            display: flex; align-items: center; gap: 6px; height: 100%;
            padding: 0 20px; font-size: 14px; font-weight: 500;
            color: rgba(255,255,255,0.75); white-space: nowrap;
            border-bottom: 3px solid transparent; transition: var(--transition);
            position: relative;
        }
        .nav-link:hover { color: #fff; background: rgba(255,255,255,0.08); }
        .nav-link.active { color: #fff; border-bottom-color: var(--accent); background: rgba(255,255,255,0.06); }
        .nav-link i { font-size: 14px; }
        .nav-link:focus-visible { outline: 2px solid var(--accent); outline-offset: -2px; border-radius: 2px; }

        /* 移动端菜单按钮 */
        .mobile-menu-btn {
            display: none; background: none; border: none; font-size: 22px;
            color: var(--primary); padding: 4px; cursor: pointer;
        }
        .mobile-menu-btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

        /* ===== Hero 首屏 ===== */
        .hero {
            position: relative; min-height: 560px; display: flex; align-items: center;
            background: var(--primary-dark); overflow: hidden;
        }
        .hero-bg {
            position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.35; transform: scale(1.05);
            transition: transform 8s ease;
        }
        .hero:hover .hero-bg { transform: scale(1.0); }
        .hero-overlay {
            position: absolute; inset: 0;
            background: linear-gradient(135deg, rgba(15,36,64,0.88) 0%, rgba(26,58,92,0.72) 100%);
        }
        .hero .container { position: relative; z-index: 2; width: 100%; }
        .hero-content { max-width: 720px; }
        .hero-badge { margin-bottom: 16px; }
        .hero-title {
            font-size: 48px; font-weight: 900; line-height: 1.2; color: #fff;
            letter-spacing: -1px; margin-bottom: 20px;
        }
        .hero-title span { color: var(--accent); }
        .hero-desc {
            font-size: 18px; line-height: 1.7; color: rgba(255,255,255,0.8);
            margin-bottom: 32px; max-width: 600px;
        }
        .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(255,255,255,0.12);
        }
        .hero-stat h3 { font-size: 28px; font-weight: 800; color: var(--accent); }
        .hero-stat p { font-size: 13px; color: rgba(255,255,255,0.6); margin: 2px 0 0; }

        /* ===== 板块通用 ===== */
        .section-title {
            font-size: 32px; font-weight: 800; color: var(--primary);
            letter-spacing: -0.5px; line-height: 1.3;
        }
        .section-subtitle {
            font-size: 16px; color: var(--text-secondary); max-width: 640px; margin: 8px auto 0;
        }
        .section-divider {
            width: 60px; height: 4px; background: var(--accent); border-radius: 4px;
            margin: 16px 0 24px;
        }
        .section-divider.center { margin-left: auto; margin-right: auto; }

        /* ===== 平台简介 ===== */
        .section-about { background: #fff; }
        .about-grid {
            display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center;
        }
        .about-image {
            border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-md);
            position: relative;
        }
        .about-image img { width: 100%; height: 360px; object-fit: cover; transition: var(--transition); }
        .about-image:hover img { transform: scale(1.03); }
        .about-image::after {
            content: ''; position: absolute; inset: 0;
            background: linear-gradient(to top, rgba(15,36,64,0.3), transparent);
        }
        .about-text h3 { font-size: 26px; font-weight: 700; color: var(--primary); margin-bottom: 16px; }
        .about-text p { color: var(--text-secondary); margin-bottom: 16px; font-size: 15px; line-height: 1.8; }
        .about-features { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 24px; }
        .about-feature {
            display: flex; align-items: center; gap: 10px; font-size: 14px; color: var(--text-primary);
        }
        .about-feature i { color: var(--accent); font-size: 16px; width: 20px; }

        /* ===== 分类入口 ===== */
        .section-categories { background: var(--bg-section-alt); }
        .category-grid {
            display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 24px; margin-top: 40px;
        }
        .category-card {
            background: #fff; border-radius: var(--radius-md); overflow: hidden;
            box-shadow: var(--shadow-sm); transition: var(--transition);
            border: 1px solid var(--border-light);
        }
        .category-card:hover {
            transform: translateY(-6px); box-shadow: var(--shadow-hover);
            border-color: var(--accent);
        }
        .category-card-img {
            height: 160px; overflow: hidden; position: relative;
        }
        .category-card-img img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
        .category-card:hover .category-card-img img { transform: scale(1.08); }
        .category-card-img .badge {
            position: absolute; top: 12px; left: 12px;
        }
        .category-card-body { padding: 20px; }
        .category-card-body h4 { font-size: 17px; font-weight: 700; color: var(--primary); margin-bottom: 8px; }
        .category-card-body p { font-size: 13px; color: var(--text-secondary); line-height: 1.6; margin: 0; }
        .category-card-link {
            display: inline-flex; align-items: center; gap: 4px; margin-top: 12px;
            font-size: 13px; font-weight: 600; color: var(--primary-light);
        }
        .category-card-link i { transition: var(--transition); font-size: 12px; }
        .category-card:hover .category-card-link i { transform: translateX(4px); }

        /* ===== 最新资讯列表 ===== */
        .section-news { background: #fff; }
        .news-grid {
            display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
            gap: 24px; margin-top: 40px;
        }
        .news-card {
            background: #fff; border-radius: var(--radius-md); overflow: hidden;
            box-shadow: var(--shadow-sm); transition: var(--transition);
            border: 1px solid var(--border-light); display: flex; flex-direction: column;
        }
        .news-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .news-card-img {
            height: 180px; overflow: hidden; position: relative; flex-shrink: 0;
        }
        .news-card-img img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
        .news-card:hover .news-card-img img { transform: scale(1.05); }
        .news-card-img .tag-cat {
            position: absolute; top: 12px; left: 12px;
            background: var(--accent); color: var(--text-on-accent);
            padding: 2px 12px; border-radius: 50px; font-size: 11px; font-weight: 600;
        }
        .news-card-body { padding: 20px; flex: 1; display: flex; flex-direction: column; }
        .news-card-body h4 { font-size: 16px; font-weight: 700; color: var(--primary); margin-bottom: 10px; line-height: 1.4; }
        .news-card-body h4 a { color: inherit; }
        .news-card-body h4 a:hover { color: var(--primary-light); }
        .news-card-body p { font-size: 13px; color: var(--text-secondary); line-height: 1.7; flex: 1; margin: 0 0 16px; }
        .news-card-meta {
            display: flex; align-items: center; gap: 16px; font-size: 12px; color: var(--text-muted);
            border-top: 1px solid var(--border-light); padding-top: 12px;
        }
        .news-card-meta i { margin-right: 4px; }
        .news-empty {
            grid-column: 1 / -1; text-align: center; padding: 60px 20px;
            color: var(--text-muted); font-size: 15px;
        }

        /* ===== 数据统计 ===== */
        .section-stats {
            background: var(--primary-dark); position: relative; overflow: hidden;
        }
        .section-stats::before {
            content: ''; position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.10;
        }
        .stats-grid {
            display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px;
            position: relative; z-index: 1;
        }
        .stat-item { text-align: center; padding: 16px; }
        .stat-item i { font-size: 36px; color: var(--accent); margin-bottom: 12px; display: block; }
        .stat-item h3 { font-size: 40px; font-weight: 900; color: #fff; line-height: 1.2; }
        .stat-item p { font-size: 14px; color: rgba(255,255,255,0.65); margin: 4px 0 0; }

        /* ===== 服务流程 ===== */
        .section-process { background: #fff; }
        .process-grid {
            display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-top: 40px;
        }
        .process-step {
            text-align: center; padding: 32px 16px; border-radius: var(--radius-md);
            background: var(--bg-body); transition: var(--transition);
            position: relative;
        }
        .process-step:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .process-step .step-num {
            width: 52px; height: 52px; display: flex; align-items: center; justify-content: center;
            margin: 0 auto 16px; border-radius: 50%;
            background: var(--accent); color: var(--text-on-accent);
            font-size: 22px; font-weight: 800;
        }
        .process-step h4 { font-size: 16px; font-weight: 700; color: var(--primary); margin-bottom: 8px; }
        .process-step p { font-size: 13px; color: var(--text-secondary); margin: 0; line-height: 1.6; }
        .process-step::after {
            content: '→'; position: absolute; right: -16px; top: 50%; transform: translateY(-50%);
            font-size: 24px; color: var(--accent); font-weight: 700;
        }
        .process-step:last-child::after { display: none; }

        /* ===== FAQ ===== */
        .section-faq { background: var(--bg-section-alt); }
        .faq-grid { max-width: 800px; margin: 40px auto 0; }
        .faq-item {
            background: #fff; border-radius: var(--radius-md); margin-bottom: 16px;
            box-shadow: var(--shadow-sm); overflow: hidden;
            border: 1px solid var(--border-light); transition: var(--transition);
        }
        .faq-item:hover { box-shadow: var(--shadow-md); }
        .faq-question {
            width: 100%; padding: 20px 24px; display: flex; align-items: center; gap: 12px;
            font-size: 15px; font-weight: 600; color: var(--text-primary);
            background: none; text-align: left; cursor: pointer;
            transition: var(--transition);
        }
        .faq-question:hover { background: rgba(240,179,75,0.05); }
        .faq-question i.fa-chevron-down {
            margin-left: auto; transition: var(--transition); font-size: 13px; color: var(--text-muted);
        }
        .faq-item.active .faq-question i.fa-chevron-down { transform: rotate(180deg); }
        .faq-answer {
            max-height: 0; overflow: hidden; transition: max-height 0.35s ease, padding 0.3s ease;
            padding: 0 24px; color: var(--text-secondary); font-size: 14px; line-height: 1.8;
        }
        .faq-item.active .faq-answer {
            max-height: 300px; padding: 0 24px 20px;
        }

        /* ===== CTA ===== */
        .section-cta {
            background: var(--primary); position: relative; overflow: hidden;
        }
        .section-cta::before {
            content: ''; position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.08;
        }
        .cta-content { position: relative; z-index: 1; text-align: center; padding: 40px 0; }
        .cta-content h2 { font-size: 34px; font-weight: 800; color: #fff; margin-bottom: 16px; }
        .cta-content p { font-size: 16px; color: rgba(255,255,255,0.75); max-width: 600px; margin: 0 auto 28px; }
        .cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary-dark); color: rgba(255,255,255,0.7);
            padding: 48px 0 28px;
        }
        .footer-grid {
            display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px;
            padding-bottom: 32px; border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        .footer-brand .logo { color: #fff; margin-bottom: 12px; }
        .footer-brand p { font-size: 13px; line-height: 1.8; max-width: 320px; }
        .footer-social { display: flex; gap: 12px; margin-top: 16px; }
        .footer-social a {
            width: 36px; height: 36px; display: flex; align-items: center; justify-content: center;
            border-radius: 50%; background: rgba(255,255,255,0.08); color: rgba(255,255,255,0.6);
            transition: var(--transition); font-size: 16px;
        }
        .footer-social a:hover { background: var(--accent); color: var(--text-on-accent); }
        .footer-col h5 { font-size: 14px; font-weight: 700; color: #fff; margin-bottom: 16px; }
        .footer-col ul li { margin-bottom: 8px; }
        .footer-col ul li a { font-size: 13px; color: rgba(255,255,255,0.55); transition: var(--transition); }
        .footer-col ul li a:hover { color: var(--accent); padding-left: 4px; }
        .footer-bottom {
            text-align: center; padding-top: 24px; margin-top: 24px;
            font-size: 13px; color: rgba(255,255,255,0.4);
        }
        .footer-bottom a { color: rgba(255,255,255,0.4); }
        .footer-bottom a:hover { color: var(--accent); }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
            .process-grid { grid-template-columns: repeat(2, 1fr); }
            .process-step::after { display: none; }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
            .hero-title { font-size: 40px; }
        }

        @media (max-width: 768px) {
            body { padding-top: calc(var(--header-top-h) + var(--header-nav-h)); }
            .header-search { width: 140px; }
            .header-search input { font-size: 12px; }
            .hero { min-height: 440px; }
            .hero-title { font-size: 32px; }
            .hero-desc { font-size: 16px; }
            .hero-stats { gap: 24px; flex-wrap: wrap; }
            .hero-stat h3 { font-size: 22px; }
            .about-grid { grid-template-columns: 1fr; gap: 32px; }
            .about-image img { height: 240px; }
            .about-features { grid-template-columns: 1fr; }
            .section-title { font-size: 26px; }
            .section-padding { padding: 56px 0; }
            .news-grid { grid-template-columns: 1fr; }
            .category-grid { grid-template-columns: repeat(2, 1fr); }
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
            .stat-item h3 { font-size: 28px; }
            .process-grid { grid-template-columns: 1fr; gap: 16px; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .cta-content h2 { font-size: 26px; }
            .faq-question { font-size: 14px; padding: 16px 20px; }
        }

        @media (max-width: 520px) {
            .header-top .container { gap: 8px; }
            .logo { font-size: 18px; }
            .logo i { font-size: 20px; }
            .header-search { width: 100px; padding: 0 10px; }
            .header-search input { width: 60px; }
            .header-cta .btn { padding: 6px 14px; font-size: 12px; }
            .nav-link { padding: 0 12px; font-size: 13px; }
            .hero-title { font-size: 26px; }
            .hero-desc { font-size: 14px; }
            .hero-actions { flex-direction: column; }
            .hero-actions .btn { width: 100%; }
            .hero-stats { flex-direction: column; gap: 16px; }
            .category-grid { grid-template-columns: 1fr; }
            .stats-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
            .stat-item { padding: 8px; }
            .stat-item i { font-size: 28px; }
            .stat-item h3 { font-size: 24px; }
            .section-title { font-size: 22px; }
            .section-padding { padding: 40px 0; }
            .news-card-img { height: 140px; }
            .btn-lg { padding: 12px 28px; font-size: 15px; }
            .container { padding: 0 16px; }
        }

        /* ===== Foundation 覆盖 ===== */
        .grid-container { max-width: var(--max-width); padding-left: 24px; padding-right: 24px; }
        @media (max-width: 520px) { .grid-container { padding-left: 16px; padding-right: 16px; } }
        .cell { margin-bottom: 0; }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0a6e4a;
            --primary-light: #0f8b5e;
            --primary-dark: #065235;
            --primary-bg: #e8f5ee;
            --secondary: #d4a843;
            --secondary-light: #e0bc6a;
            --accent: #1a8cff;
            --bg-light: #f8faf9;
            --bg-white: #ffffff;
            --bg-dark: #0c1a14;
            --text-dark: #1a2b24;
            --text-main: #2d3f38;
            --text-light: #5a7168;
            --text-white: #f0f5f2;
            --border-light: #dce8e2;
            --border-medium: #b8cec4;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(10, 110, 74, 0.08);
            --shadow-md: 0 6px 24px rgba(10, 110, 74, 0.12);
            --shadow-lg: 0 16px 48px rgba(10, 110, 74, 0.18);
            --shadow-xl: 0 24px 64px rgba(10, 110, 74, 0.22);
            --transition: 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --max-width: 1200px;
            --header-top-h: 60px;
            --nav-h: 48px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-main);
            background: var(--bg-light);
            -webkit-font-smoothing: antialiased;
        }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-light); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-md); }
        ul, ol { list-style: none; padding: 0; }
        button, input, textarea { font-family: inherit; font-size: 1rem; outline: none; }
        .container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
        .container-fluid { width: 100%; padding: 0 24px; }

        /* ===== Header ===== */
        .site-header {
            background: var(--bg-white);
            box-shadow: 0 2px 12px rgba(10, 110, 74, 0.08);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-top {
            height: var(--header-top-h);
            border-bottom: 1px solid var(--border-light);
            background: var(--bg-white);
        }
        .header-top .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--primary-dark) !important;
            letter-spacing: 0.5px;
        }
        .logo i { color: var(--secondary); font-size: 1.5rem; }
        .logo:hover i { transform: rotate(-8deg) scale(1.1); }
        .header-top-right {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .header-search {
            display: flex;
            align-items: center;
            background: var(--bg-light);
            border-radius: 50px;
            padding: 0 14px;
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .header-search:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(10, 110, 74, 0.12);
        }
        .header-search i { color: var(--text-light); font-size: 0.85rem; margin-right: 8px; }
        .header-search input {
            border: none;
            background: transparent;
            padding: 8px 0;
            width: 160px;
            color: var(--text-main);
            font-size: 0.9rem;
        }
        .header-search input::placeholder { color: var(--text-light); }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 24px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
            white-space: nowrap;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff !important;
            box-shadow: 0 4px 14px rgba(10, 110, 74, 0.25);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(10, 110, 74, 0.35);
        }
        .btn-secondary {
            background: var(--secondary);
            color: #fff !important;
            box-shadow: 0 4px 14px rgba(212, 168, 67, 0.25);
        }
        .btn-secondary:hover {
            background: var(--secondary-light);
            transform: translateY(-2px);
        }
        .btn-outline {
            background: transparent;
            border: 2px solid var(--primary);
            color: var(--primary) !important;
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff !important;
        }
        .btn-sm { padding: 6px 18px; font-size: 0.82rem; }
        .btn-lg { padding: 14px 36px; font-size: 1.05rem; }
        .mobile-menu-btn {
            background: none;
            border: none;
            font-size: 1.4rem;
            color: var(--text-dark);
            cursor: pointer;
            padding: 4px 8px;
            display: none;
        }

        /* ===== Navigation ===== */
        .header-nav {
            background: var(--bg-white);
            height: var(--nav-h);
            border-bottom: 1px solid var(--border-light);
        }
        .header-nav .container {
            display: flex;
            align-items: center;
            height: 100%;
            gap: 4px;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }
        .header-nav .container::-webkit-scrollbar { display: none; }
        .nav-link {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 6px 18px;
            border-radius: 50px;
            font-size: 0.88rem;
            font-weight: 500;
            color: var(--text-light) !important;
            white-space: nowrap;
            transition: var(--transition);
            border: 1px solid transparent;
        }
        .nav-link i { font-size: 0.8rem; }
        .nav-link:hover {
            color: var(--primary) !important;
            background: var(--primary-bg);
            border-color: var(--border-light);
        }
        .nav-link.active {
            color: var(--primary-dark) !important;
            background: var(--primary-bg);
            border-color: var(--primary);
            font-weight: 600;
        }

        /* ===== Article Page ===== */
        .article-banner {
            position: relative;
            min-height: 320px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary-dark), #0a2e22);
            overflow: hidden;
            padding: 60px 0;
        }
        .article-banner-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.2;
            filter: blur(2px);
        }
        .article-banner .container {
            position: relative;
            z-index: 2;
            text-align: center;
            color: var(--text-white);
        }
        .article-banner .breadcrumb {
            display: flex;
            justify-content: center;
            gap: 8px;
            font-size: 0.85rem;
            margin-bottom: 16px;
            color: rgba(255,255,255,0.7);
        }
        .article-banner .breadcrumb a { color: rgba(255,255,255,0.8); }
        .article-banner .breadcrumb a:hover { color: #fff; }
        .article-banner h1 {
            font-size: 2.4rem;
            font-weight: 800;
            line-height: 1.3;
            max-width: 800px;
            margin: 0 auto 12px;
            color: #fff;
        }
        .article-banner .meta {
            display: flex;
            justify-content: center;
            gap: 20px;
            font-size: 0.9rem;
            color: rgba(255,255,255,0.75);
        }
        .article-banner .meta i { margin-right: 4px; }

        .article-main {
            padding: 60px 0;
            background: var(--bg-light);
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
        }
        .article-content-wrap {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 40px 44px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
        }
        .article-content-wrap .featured-image {
            width: 100%;
            border-radius: var(--radius-md);
            margin-bottom: 28px;
            max-height: 460px;
            object-fit: cover;
        }
        .article-content {
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--text-main);
        }
        .article-content p {
            margin-bottom: 1.4em;
        }
        .article-content h2, .article-content h3 {
            color: var(--primary-dark);
            margin-top: 1.6em;
            margin-bottom: 0.6em;
            font-weight: 700;
        }
        .article-content h2 { font-size: 1.6rem; }
        .article-content h3 { font-size: 1.25rem; }
        .article-content ul, .article-content ol {
            padding-left: 1.6em;
            margin-bottom: 1.2em;
        }
        .article-content ul li {
            list-style: disc;
            margin-bottom: 0.3em;
        }
        .article-content ol li {
            list-style: decimal;
            margin-bottom: 0.3em;
        }
        .article-content a { color: var(--accent); text-decoration: underline; }
        .article-content blockquote {
            border-left: 4px solid var(--primary);
            background: var(--primary-bg);
            padding: 16px 24px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 1.4em 0;
            color: var(--text-dark);
            font-style: italic;
        }
        .article-content img {
            border-radius: var(--radius-md);
            margin: 1.4em auto;
            box-shadow: var(--shadow-sm);
        }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 32px;
            padding-top: 20px;
            border-top: 1px solid var(--border-light);
        }
        .article-tags .tag {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.8rem;
            background: var(--primary-bg);
            color: var(--primary);
            border: 1px solid var(--border-light);
        }
        .article-tags .tag i { font-size: 0.7rem; }

        /* ===== Sidebar ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }
        .sidebar-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 24px 20px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
        }
        .sidebar-card h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card h4 i { color: var(--secondary); }
        .sidebar-post-list li {
            padding: 10px 0;
            border-bottom: 1px solid var(--border-light);
        }
        .sidebar-post-list li:last-child { border-bottom: none; }
        .sidebar-post-list a {
            display: flex;
            gap: 12px;
            align-items: flex-start;
            color: var(--text-main);
        }
        .sidebar-post-list a:hover { color: var(--primary); }
        .sidebar-post-list .sp-thumb {
            width: 60px;
            height: 60px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
        }
        .sidebar-post-list .sp-info { flex: 1; }
        .sidebar-post-list .sp-title {
            font-size: 0.9rem;
            font-weight: 600;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .sidebar-post-list .sp-date {
            font-size: 0.78rem;
            color: var(--text-light);
            margin-top: 4px;
        }
        .sidebar-cta {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            color: #fff;
            border: none;
        }
        .sidebar-cta h4 { color: #fff; }
        .sidebar-cta h4 i { color: var(--secondary); }
        .sidebar-cta p { font-size: 0.9rem; opacity: 0.9; margin-bottom: 16px; }
        .sidebar-cta .btn-white {
            background: #fff;
            color: var(--primary-dark) !important;
            font-weight: 700;
            padding: 10px 28px;
            border-radius: 50px;
        }
        .sidebar-cta .btn-white:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(0,0,0,0.15); }

        /* ===== Article Nav ===== */
        .article-nav {
            margin-top: 40px;
            padding-top: 24px;
            border-top: 1px solid var(--border-light);
            display: flex;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap;
        }
        .article-nav a {
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 500;
            color: var(--text-light);
            max-width: 45%;
        }
        .article-nav a:hover { color: var(--primary); }
        .article-nav .nav-next { text-align: right; justify-content: flex-end; }

        /* ===== Related Section ===== */
        .related-section {
            padding: 60px 0;
            background: var(--bg-white);
        }
        .related-section .section-title {
            text-align: center;
            margin-bottom: 40px;
        }
        .related-section .section-title h2 {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--text-dark);
        }
        .related-section .section-title p {
            color: var(--text-light);
            font-size: 1rem;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .related-card {
            background: var(--bg-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .related-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            border-radius: 0;
        }
        .related-card .rc-body {
            padding: 16px 18px 20px;
        }
        .related-card .rc-cat {
            font-size: 0.78rem;
            color: var(--primary);
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.3px;
        }
        .related-card .rc-title {
            font-size: 1rem;
            font-weight: 700;
            margin: 6px 0 8px;
            color: var(--text-dark);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .rc-title a { color: var(--text-dark); }
        .related-card .rc-title a:hover { color: var(--primary); }
        .related-card .rc-date {
            font-size: 0.8rem;
            color: var(--text-light);
        }

        /* ===== CTA Section ===== */
        .article-cta {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            padding: 60px 0;
            text-align: center;
            color: #fff;
        }
        .article-cta h2 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 12px;
        }
        .article-cta p {
            font-size: 1.1rem;
            opacity: 0.9;
            max-width: 600px;
            margin: 0 auto 28px;
        }
        .article-cta .btn-group {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .article-cta .btn-white {
            background: #fff;
            color: var(--primary-dark) !important;
            font-weight: 700;
            padding: 14px 36px;
            border-radius: 50px;
        }
        .article-cta .btn-white:hover { transform: translateY(-3px); box-shadow: 0 10px 30px rgba(0,0,0,0.2); }
        .article-cta .btn-outline-light {
            background: transparent;
            border: 2px solid rgba(255,255,255,0.7);
            color: #fff !important;
        }
        .article-cta .btn-outline-light:hover {
            background: rgba(255,255,255,0.12);
            border-color: #fff;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: var(--text-white);
            padding: 60px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo {
            color: #fff !important;
            font-size: 1.5rem;
            margin-bottom: 12px;
            display: inline-flex;
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: rgba(255,255,255,0.7);
            line-height: 1.7;
            max-width: 360px;
            margin: 12px 0 16px;
        }
        .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(255,255,255,0.08);
            color: rgba(255,255,255,0.7);
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-3px);
        }
        .footer-col h5 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: rgba(255,255,255,0.65);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--secondary);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: 24px;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.5);
        }

        /* ===== Responsive ===== */
        @media screen and (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
        }

        @media screen and (max-width: 768px) {
            :root {
                --header-top-h: 56px;
                --nav-h: 44px;
            }
            .container { padding: 0 16px; }
            .header-search { display: none; }
            .header-cta { display: none !important; }
            .mobile-menu-btn { display: block !important; }
            .header-nav .container {
                gap: 2px;
                padding: 0 8px;
            }
            .nav-link {
                padding: 4px 12px;
                font-size: 0.82rem;
            }
            .article-banner { min-height: 220px; padding: 40px 0; }
            .article-banner h1 { font-size: 1.6rem; }
            .article-banner .meta {
                flex-wrap: wrap;
                gap: 10px;
                font-size: 0.82rem;
            }
            .article-content-wrap { padding: 24px 18px; }
            .article-content { font-size: 1rem; }
            .related-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-brand p { max-width: 100%; }
            .article-nav a { max-width: 100%; }
            .article-nav { flex-direction: column; }
            .article-nav .nav-next { text-align: left; justify-content: flex-start; }
            .article-cta h2 { font-size: 1.5rem; }
            .article-cta .btn-group { flex-direction: column; align-items: center; }
        }

        @media screen and (max-width: 520px) {
            .header-top .container { padding: 0 12px; }
            .logo { font-size: 1.15rem; }
            .logo i { font-size: 1.2rem; }
            .nav-link { padding: 3px 10px; font-size: 0.75rem; }
            .nav-link i { display: none; }
            .article-banner h1 { font-size: 1.3rem; }
            .article-content-wrap { padding: 16px 12px; }
            .sidebar-card { padding: 16px 14px; }
            .related-card .rc-body { padding: 12px 14px 16px; }
            .article-cta { padding: 40px 0; }
            .article-cta h2 { font-size: 1.25rem; }
        }

        /* ===== Extra Utilities ===== */
        .text-center { text-align: center; }
        .mt-1 { margin-top: 0.5rem; }
        .mt-2 { margin-top: 1rem; }
        .mt-3 { margin-top: 1.5rem; }
        .mb-1 { margin-bottom: 0.5rem; }
        .mb-2 { margin-bottom: 1rem; }
        .mb-3 { margin-bottom: 1.5rem; }
        .gap-2 { gap: 0.5rem; }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .show-for-small-only { display: none !important; }
        @media screen and (max-width: 768px) {
            .hide-for-small-only { display: none !important; }
            .show-for-small-only { display: block !important; }
        }
        @media screen and (min-width: 769px) {
            .hide-for-small-only { display: flex !important; }
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a4b8c;
            --primary-light: #2a6bc4;
            --primary-dark: #0f2d5a;
            --primary-gradient: linear-gradient(135deg, #1a4b8c 0%, #2a6bc4 100%);
            --secondary: #e8a832;
            --secondary-light: #f0c060;
            --secondary-dark: #c88a1e;
            --accent: #17a2b8;
            --bg-light: #f5f8fc;
            --bg-white: #ffffff;
            --bg-dark: #0f1a2e;
            --text-primary: #1a2a3a;
            --text-secondary: #4a5a6a;
            --text-muted: #8a9aaa;
            --text-light: #f0f4f8;
            --border-color: #e2e8f0;
            --border-light: #f0f2f5;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(26, 75, 140, 0.06);
            --shadow-md: 0 6px 24px rgba(26, 75, 140, 0.10);
            --shadow-lg: 0 12px 40px rgba(26, 75, 140, 0.14);
            --shadow-hover: 0 18px 48px rgba(26, 75, 140, 0.18);
            --transition: 0.30s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --container-max: 1200px;
            --header-top-bg: #ffffff;
            --header-nav-bg: var(--primary);
            --footer-bg: #0f1a2e;
            --footer-text: #c8d0dc;
        }

        /* ===== 基础重置 ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            margin: 0;
            padding: 0;
            font-family: var(--font-sans);
            color: var(--text-primary);
            background: var(--bg-light);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-light);
        }
        a:focus-visible {
            outline: 3px solid var(--secondary);
            outline-offset: 2px;
            border-radius: 4px;
        }

        ul,
        ol {
            padding-left: 1.2rem;
        }

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

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

        @media (max-width: 640px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== 头部 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: var(--header-top-bg);
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
        }

        .header-top {
            padding: 12px 0;
            border-bottom: 1px solid var(--border-color);
        }
        .header-top .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
            transition: opacity var(--transition);
        }
        .logo i {
            color: var(--secondary);
            font-size: 1.8rem;
        }
        .logo:hover {
            opacity: 0.85;
            color: var(--primary);
        }

        .header-top-right {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .header-search {
            display: flex;
            align-items: center;
            background: var(--bg-light);
            border-radius: 40px;
            padding: 6px 16px 6px 14px;
            border: 1px solid var(--border-color);
            transition: border var(--transition), box-shadow var(--transition);
        }
        .header-search:focus-within {
            border-color: var(--primary-light);
            box-shadow: 0 0 0 3px rgba(26, 75, 140, 0.08);
        }
        .header-search i {
            color: var(--text-muted);
            font-size: 0.95rem;
            margin-right: 8px;
        }
        .header-search input {
            border: none;
            background: transparent;
            padding: 6px 0;
            width: 160px;
            font-size: 0.9rem;
            color: var(--text-primary);
            outline: none;
        }
        .header-search input::placeholder {
            color: var(--text-muted);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.9rem;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            text-decoration: none;
            line-height: 1.4;
        }
        .btn:focus-visible {
            outline: 3px solid var(--secondary);
            outline-offset: 2px;
        }

        .btn-primary {
            background: var(--primary-gradient);
            color: #fff;
            box-shadow: 0 4px 14px rgba(26, 75, 140, 0.25);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(26, 75, 140, 0.35);
            color: #fff;
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(26, 75, 140, 0.20);
        }

        .btn-secondary {
            background: var(--secondary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(232, 168, 50, 0.30);
        }
        .btn-secondary:hover {
            background: var(--secondary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(232, 168, 50, 0.40);
            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: 6px 18px;
            font-size: 0.82rem;
        }
        .btn-lg {
            padding: 14px 36px;
            font-size: 1.05rem;
        }

        .header-cta {
            white-space: nowrap;
        }

        .mobile-menu-btn {
            background: none;
            border: none;
            font-size: 1.6rem;
            color: var(--primary);
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 8px;
            transition: background var(--transition);
        }
        .mobile-menu-btn:hover {
            background: var(--bg-light);
        }

        /* ===== 导航栏 ===== */
        .header-nav {
            background: var(--header-nav-bg);
            padding: 0;
            position: relative;
            z-index: 99;
        }
        .header-nav .container {
            display: flex;
            align-items: center;
            gap: 6px;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            padding-top: 0;
            padding-bottom: 0;
        }
        .header-nav .container::-webkit-scrollbar {
            display: none;
        }

        .nav-link {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 12px 20px;
            color: rgba(255, 255, 255, 0.75);
            font-size: 0.92rem;
            font-weight: 500;
            border-radius: 0;
            transition: all var(--transition);
            white-space: nowrap;
            border-bottom: 3px solid transparent;
            text-decoration: none;
        }
        .nav-link i {
            font-size: 1rem;
        }
        .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
            border-bottom-color: rgba(255, 255, 255, 0.20);
        }
        .nav-link.active {
            color: #fff;
            border-bottom-color: var(--secondary);
            background: rgba(255, 255, 255, 0.06);
        }
        .nav-link:focus-visible {
            outline: 3px solid var(--secondary);
            outline-offset: -3px;
            border-radius: 2px;
        }

        /* ===== 移动端导航折叠 ===== */
        .mobile-nav-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.45);
            z-index: 200;
            opacity: 0;
            transition: opacity 0.3s ease;
        }
        .mobile-nav-overlay.open {
            display: block;
            opacity: 1;
        }

        .mobile-drawer {
            position: fixed;
            top: 0;
            right: -300px;
            width: 280px;
            height: 100%;
            background: var(--bg-white);
            z-index: 210;
            box-shadow: -8px 0 32px rgba(0, 0, 0, 0.15);
            padding: 24px 20px;
            overflow-y: auto;
            transition: right 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }
        .mobile-drawer.open {
            right: 0;
        }
        .mobile-drawer-close {
            background: none;
            border: none;
            font-size: 1.8rem;
            color: var(--text-primary);
            cursor: pointer;
            float: right;
            padding: 4px 8px;
            border-radius: 8px;
            transition: background var(--transition);
        }
        .mobile-drawer-close:hover {
            background: var(--bg-light);
        }
        .mobile-drawer h4 {
            margin-top: 40px;
            font-size: 1.1rem;
            color: var(--text-muted);
            border-bottom: 1px solid var(--border-color);
            padding-bottom: 12px;
        }
        .mobile-drawer .nav-link-mobile {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 12px 0;
            color: var(--text-primary);
            font-weight: 500;
            font-size: 1rem;
            border-bottom: 1px solid var(--border-light);
            text-decoration: none;
            transition: color var(--transition);
        }
        .mobile-drawer .nav-link-mobile i {
            width: 24px;
            color: var(--primary);
        }
        .mobile-drawer .nav-link-mobile:hover {
            color: var(--primary);
        }
        .mobile-drawer .nav-link-mobile.active-mobile {
            color: var(--primary);
            font-weight: 700;
        }

        /* ===== 页面横幅 ===== */
        .page-banner {
            background: var(--primary-gradient);
            padding: 60px 0 50px;
            position: relative;
            overflow: hidden;
            min-height: 220px;
            display: flex;
            align-items: center;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            opacity: 0.12;
            mix-blend-mode: overlay;
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .page-banner h1 {
            color: #fff;
            font-size: 2.4rem;
            font-weight: 800;
            margin: 0 0 12px;
            letter-spacing: -0.5px;
            text-shadow: 0 2px 12px rgba(0, 0, 0, 0.10);
        }
        .page-banner p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 1.1rem;
            max-width: 640px;
            margin: 0 auto;
            line-height: 1.6;
        }
        .page-banner .breadcrumb {
            margin-top: 16px;
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.60);
        }
        .page-banner .breadcrumb a {
            color: rgba(255, 255, 255, 0.75);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .page-banner .breadcrumb a:hover {
            color: #fff;
        }

        @media (max-width: 640px) {
            .page-banner {
                padding: 40px 0 36px;
                min-height: 160px;
            }
            .page-banner h1 {
                font-size: 1.6rem;
            }
            .page-banner p {
                font-size: 0.95rem;
            }
        }

        /* ===== 主内容区域 ===== */
        .main-content {
            padding: 50px 0 60px;
        }

        .section-block {
            margin-bottom: 52px;
        }
        .section-block:last-child {
            margin-bottom: 0;
        }

        .section-title {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 8px;
            letter-spacing: -0.3px;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-secondary);
            margin: 0 0 32px;
            max-width: 600px;
        }
        .section-title-center {
            text-align: center;
        }
        .section-subtitle-center {
            text-align: center;
            margin-left: auto;
            margin-right: auto;
        }

        .title-decoration {
            display: inline-block;
            width: 48px;
            height: 4px;
            background: var(--secondary);
            border-radius: 4px;
            margin-bottom: 12px;
        }

        /* ===== 卡片通用 ===== */
        .card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: all var(--transition);
        }
        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
        }

        .card-body {
            padding: 22px 20px 24px;
        }
        .card-body h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin: 0 0 8px;
            color: var(--text-primary);
        }
        .card-body p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            margin: 0 0 16px;
            line-height: 1.6;
        }

        .card-tag {
            display: inline-block;
            padding: 3px 12px;
            border-radius: 30px;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--primary);
            background: rgba(26, 75, 140, 0.07);
            margin-bottom: 10px;
            letter-spacing: 0.3px;
        }

        .card-footer-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            font-size: 0.88rem;
            color: var(--primary);
            transition: gap var(--transition);
        }
        .card-footer-link i {
            font-size: 0.8rem;
            transition: transform var(--transition);
        }
        .card-footer-link:hover i {
            transform: translateX(4px);
        }

        /* ===== 网格 ===== */
        .grid-2 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }
        .grid-3 {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 26px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr 1fr;
            gap: 24px;
        }

        @media (max-width: 1024px) {
            .grid-4 {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .grid-2,
            .grid-3,
            .grid-4 {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

        /* ===== 步骤 / 时间线 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr 1fr;
            gap: 24px;
            counter-reset: step;
        }
        .step-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 28px 20px 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            text-align: center;
            transition: all var(--transition);
            position: relative;
        }
        .step-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .step-card::before {
            counter-increment: step;
            content: counter(step);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary-gradient);
            color: #fff;
            font-weight: 700;
            font-size: 1.2rem;
            margin-bottom: 16px;
        }
        .step-card h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin: 0 0 8px;
            color: var(--text-primary);
        }
        .step-card p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.5;
        }

        @media (max-width: 900px) {
            .steps-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 520px) {
            .steps-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== 特色列表 ===== */
        .feature-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }
        .feature-item {
            display: flex;
            gap: 14px;
            align-items: flex-start;
            background: var(--bg-white);
            padding: 18px 20px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            transition: box-shadow var(--transition);
        }
        .feature-item:hover {
            box-shadow: var(--shadow-sm);
        }
        .feature-item i {
            font-size: 1.4rem;
            color: var(--secondary);
            margin-top: 2px;
            flex-shrink: 0;
        }
        .feature-item h4 {
            font-size: 1rem;
            font-weight: 700;
            margin: 0 0 4px;
            color: var(--text-primary);
        }
        .feature-item p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.5;
        }

        @media (max-width: 640px) {
            .feature-list {
                grid-template-columns: 1fr;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            margin-bottom: 12px;
            overflow: hidden;
            transition: box-shadow var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 18px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-primary);
            cursor: pointer;
            text-align: left;
            transition: background var(--transition);
            gap: 12px;
        }
        .faq-question:hover {
            background: var(--bg-light);
        }
        .faq-question:focus-visible {
            outline: 3px solid var(--secondary);
            outline-offset: -3px;
        }
        .faq-question i {
            font-size: 0.9rem;
            color: var(--text-muted);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 24px 18px;
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-block {
            background: var(--primary-gradient);
            border-radius: var(--radius-lg);
            padding: 50px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-block::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.06;
            mix-blend-mode: overlay;
        }
        .cta-block .container {
            position: relative;
            z-index: 2;
        }
        .cta-block h2 {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            margin: 0 0 12px;
        }
        .cta-block p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 560px;
            margin: 0 auto 28px;
        }
        .cta-block .btn {
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.15);
        }

        @media (max-width: 640px) {
            .cta-block {
                padding: 36px 20px;
            }
            .cta-block h2 {
                font-size: 1.4rem;
            }
            .cta-block p {
                font-size: 0.95rem;
            }
        }

        /* ===== 内容列表 ===== */
        .content-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .content-row {
            display: flex;
            align-items: center;
            gap: 20px;
            background: var(--bg-white);
            padding: 16px 20px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .content-row:hover {
            box-shadow: var(--shadow-sm);
            transform: translateX(4px);
        }
        .content-row img {
            width: 80px;
            height: 60px;
            border-radius: 8px;
            object-fit: cover;
            flex-shrink: 0;
        }
        .content-row .row-info {
            flex: 1;
            min-width: 0;
        }
        .content-row .row-info h4 {
            font-size: 1rem;
            font-weight: 600;
            margin: 0 0 4px;
            color: var(--text-primary);
        }
        .content-row .row-info p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin: 0;
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .content-row .row-meta {
            font-size: 0.8rem;
            color: var(--text-muted);
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }
        .content-row .row-meta i {
            margin-right: 2px;
        }

        @media (max-width: 640px) {
            .content-row {
                flex-wrap: wrap;
                gap: 12px;
            }
            .content-row img {
                width: 60px;
                height: 46px;
            }
            .content-row .row-meta {
                width: 100%;
                padding-left: 0;
            }
        }

        /* ===== 徽章 / 标签 ===== */
        .badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 30px;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.3px;
        }
        .badge-primary {
            background: rgba(26, 75, 140, 0.08);
            color: var(--primary);
        }
        .badge-secondary {
            background: rgba(232, 168, 50, 0.12);
            color: var(--secondary-dark);
        }
        .badge-accent {
            background: rgba(23, 162, 184, 0.10);
            color: var(--accent);
        }

        /* ===== 分隔线 ===== */
        .divider {
            height: 1px;
            background: var(--border-color);
            margin: 40px 0;
            border: none;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--footer-bg);
            color: var(--footer-text);
            padding: 48px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 32px;
        }
        .footer-brand .logo {
            color: #fff;
            font-size: 1.4rem;
            margin-bottom: 14px;
            display: inline-flex;
        }
        .footer-brand .logo i {
            color: var(--secondary);
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: var(--footer-text);
            line-height: 1.7;
            margin: 12px 0 16px;
            opacity: 0.8;
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: var(--footer-text);
            font-size: 1.1rem;
            transition: all var(--transition);
            text-decoration: none;
        }
        .footer-social a:hover {
            background: var(--primary-light);
            color: #fff;
            transform: translateY(-3px);
        }

        .footer-col h5 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin: 0 0 16px;
            letter-spacing: 0.3px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col li {
            margin-bottom: 10px;
        }
        .footer-col a {
            color: var(--footer-text);
            font-size: 0.9rem;
            opacity: 0.8;
            transition: all var(--transition);
            text-decoration: none;
        }
        .footer-col a:hover {
            opacity: 1;
            color: #fff;
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 20px;
            text-align: center;
            font-size: 0.82rem;
            color: var(--footer-text);
            opacity: 0.7;
        }
        .footer-bottom p {
            margin: 0;
        }

        @media (max-width: 900px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }

        /* ===== 响应式辅助 ===== */
        .show-for-small-only {
            display: none !important;
        }
        @media (max-width: 640px) {
            .hide-for-small-only {
                display: none !important;
            }
            .show-for-small-only {
                display: block !important;
            }
        }

        /* ===== 动画 ===== */
        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(24px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .fade-up {
            animation: fadeUp 0.6s ease forwards;
        }
        .fade-up-d1 {
            animation-delay: 0.1s;
        }
        .fade-up-d2 {
            animation-delay: 0.2s;
        }
        .fade-up-d3 {
            animation-delay: 0.3s;
        }
        .fade-up-d4 {
            animation-delay: 0.4s;
        }

        /* ===== 额外间距与微调 ===== */
        .text-center {
            text-align: center;
        }
        .mt-1 {
            margin-top: 16px;
        }
        .mt-2 {
            margin-top: 32px;
        }
        .mb-1 {
            margin-bottom: 16px;
        }
        .mb-2 {
            margin-bottom: 32px;
        }
        .gap-1 {
            gap: 16px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .w-full {
            width: 100%;
        }

        /* ===== Foundation 覆盖 ===== */
        .grid-container {
            max-width: var(--container-max);
            padding-left: 24px;
            padding-right: 24px;
        }
        @media (max-width: 640px) {
            .grid-container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }
        .cell {
            margin-bottom: 0;
        }
        .grid-x>.cell {
            padding: 0;
        }