/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b76;
            --secondary: #0d1b2a;
            --secondary-light: #1b2d4a;
            --accent: #ffb703;
            --accent-dark: #e09f00;
            --bg-light: #ffffff;
            --bg-off: #f0f2f5;
            --bg-dark: #0d1b2a;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a6a;
            --text-light: #8a8aaa;
            --text-white: #ffffff;
            --border-color: #e2e4e8;
            --border-light: #f0f1f4;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 8px 28px rgba(0,0,0,0.10);
            --shadow-lg: 0 16px 48px rgba(0,0,0,0.14);
            --shadow-hover: 0 20px 40px rgba(230,57,70,0.16);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --container-max: 1200px;
            --header-height: 76px;
        }

        /* ===== 基础 Reset ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-light);
            overflow-x: hidden;
        }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-dark); }
        a:focus-visible { outline: 3px solid var(--primary-light); outline-offset: 2px; border-radius: 4px; }
        img { max-width: 100%; height: auto; display: block; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 700; color: var(--text-primary); }
        p { margin-bottom: 1rem; }
        button, input, textarea, select { font-family: inherit; font-size: inherit; }

        /* ===== 容器 ===== */
        .container { max-width: var(--container-max); margin: 0 auto; padding: 0 24px; width: 100%; }
        @media screen and (max-width: 768px) { .container { padding: 0 18px; } }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed; top: 0; left: 0; width: 100%; height: var(--header-height);
            background: rgba(13, 27, 42, 0.96); backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255,255,255,0.06);
            z-index: 1000; transition: var(--transition);
        }
        .site-header.scrolled { background: rgba(13, 27, 42, 0.98); box-shadow: 0 4px 20px rgba(0,0,0,0.3); }
        .header-inner {
            display: flex; align-items: center; justify-content: space-between;
            height: var(--header-height); padding: 0 24px; max-width: var(--container-max); margin: 0 auto;
        }
        .logo { display: flex; align-items: center; gap: 10px; font-size: 24px; font-weight: 800; color: var(--text-white); letter-spacing: 0.5px; }
        .logo i { color: var(--primary); font-size: 28px; }
        .logo span { background: linear-gradient(135deg, #ffffff 60%, var(--primary-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .nav-menu { display: flex; align-items: center; gap: 8px; }
        .nav-menu a {
            display: inline-flex; align-items: center; gap: 6px;
            padding: 8px 18px; border-radius: 40px;
            font-size: 15px; font-weight: 500; color: rgba(255,255,255,0.78);
            transition: var(--transition); position: relative;
        }
        .nav-menu a:hover, .nav-menu a.active { color: var(--text-white); background: rgba(230,57,70,0.22); }
        .nav-menu a.active { background: var(--primary); color: #fff; box-shadow: 0 4px 16px rgba(230,57,70,0.35); }
        .nav-menu a i { font-size: 14px; }
        .nav-toggle { display: none; background: none; border: none; color: var(--text-white); font-size: 26px; cursor: pointer; padding: 6px 10px; border-radius: 8px; transition: var(--transition); }
        .nav-toggle:hover { background: rgba(255,255,255,0.08); }
        @media screen and (max-width: 860px) {
            .nav-toggle { display: block; }
            .nav-menu {
                position: fixed; top: var(--header-height); left: 0; width: 100%;
                flex-direction: column; background: rgba(13,27,42,0.98); backdrop-filter: blur(16px);
                padding: 18px 24px 30px; gap: 6px; transform: translateY(-120%); opacity: 0;
                transition: var(--transition); pointer-events: none; border-bottom: 1px solid rgba(255,255,255,0.06);
            }
            .nav-menu.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
            .nav-menu a { width: 100%; justify-content: flex-start; padding: 12px 20px; font-size: 16px; border-radius: 12px; }
            .header-inner { padding: 0 18px; }
        }

        /* ===== Hero ===== */
        .hero {
            position: relative; min-height: 86vh; display: flex; align-items: center;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            margin-top: var(--header-height); overflow: hidden;
        }
        .hero::before {
            content: ''; position: absolute; inset: 0;
            background: linear-gradient(135deg, rgba(13,27,42,0.82) 0%, rgba(13,27,42,0.55) 60%, rgba(230,57,70,0.28) 100%);
            z-index: 1;
        }
        .hero-content { position: relative; z-index: 2; width: 100%; padding: 80px 24px 60px; text-align: center; }
        .hero-badge {
            display: inline-flex; align-items: center; gap: 8px;
            background: rgba(255,255,255,0.12); backdrop-filter: blur(6px);
            border: 1px solid rgba(255,255,255,0.18); border-radius: 60px;
            padding: 8px 22px; font-size: 14px; color: rgba(255,255,255,0.9); margin-bottom: 28px;
            letter-spacing: 0.5px;
        }
        .hero-badge i { color: var(--accent); font-size: 16px; }
        .hero h1 { font-size: 56px; font-weight: 900; color: var(--text-white); line-height: 1.15; margin-bottom: 18px; letter-spacing: -0.5px; }
        .hero h1 em { font-style: normal; background: linear-gradient(135deg, var(--accent), #ff6b6b); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .hero p { font-size: 20px; color: rgba(255,255,255,0.78); max-width: 680px; margin: 0 auto 36px; line-height: 1.6; }
        .hero-actions { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; }
        .btn { display: inline-flex; align-items: center; gap: 10px; padding: 14px 36px; border-radius: 60px; font-weight: 600; font-size: 16px; border: none; cursor: pointer; transition: var(--transition); text-decoration: none; }
        .btn-primary { background: var(--primary); color: var(--text-white); box-shadow: 0 8px 28px rgba(230,57,70,0.35); }
        .btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 12px 36px rgba(230,57,70,0.45); color: #fff; }
        .btn-outline { background: transparent; color: var(--text-white); border: 2px solid rgba(255,255,255,0.4); }
        .btn-outline:hover { background: rgba(255,255,255,0.12); border-color: var(--text-white); transform: translateY(-2px); color: #fff; }
        .btn-accent { background: var(--accent); color: var(--secondary); box-shadow: 0 8px 28px rgba(255,183,3,0.35); }
        .btn-accent:hover { background: var(--accent-dark); transform: translateY(-2px); color: var(--secondary); }
        .btn-sm { padding: 10px 24px; font-size: 14px; }
        @media screen and (max-width: 768px) {
            .hero { min-height: 70vh; }
            .hero h1 { font-size: 34px; }
            .hero p { font-size: 17px; }
            .hero-content { padding: 50px 18px 40px; }
            .btn { padding: 12px 28px; font-size: 15px; }
        }
        @media screen and (max-width: 520px) {
            .hero h1 { font-size: 28px; }
            .hero p { font-size: 15px; }
            .hero-badge { font-size: 12px; padding: 6px 16px; }
        }

        /* ===== 通用板块 ===== */
        .section { padding: 90px 0; }
        .section-alt { background: var(--bg-off); }
        .section-dark { background: var(--bg-dark); }
        .section-title { text-align: center; margin-bottom: 56px; }
        .section-title h2 { font-size: 38px; font-weight: 800; letter-spacing: -0.3px; margin-bottom: 12px; }
        .section-title p { color: var(--text-light); font-size: 18px; max-width: 600px; margin: 0 auto; }
        .section-title .tagline { display: inline-block; background: rgba(230,57,70,0.10); color: var(--primary); padding: 6px 20px; border-radius: 40px; font-size: 14px; font-weight: 600; margin-bottom: 12px; letter-spacing: 0.5px; }
        .section-dark .section-title h2 { color: var(--text-white); }
        .section-dark .section-title p { color: rgba(255,255,255,0.6); }
        .section-dark .section-title .tagline { background: rgba(255,255,255,0.10); color: var(--accent); }
        @media screen and (max-width: 768px) {
            .section { padding: 60px 0; }
            .section-title { margin-bottom: 40px; }
            .section-title h2 { font-size: 28px; }
            .section-title p { font-size: 16px; }
        }

        /* ===== 平台简介 ===== */
        .intro-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
        .intro-text h3 { font-size: 32px; font-weight: 800; margin-bottom: 18px; letter-spacing: -0.3px; }
        .intro-text p { color: var(--text-secondary); font-size: 17px; line-height: 1.8; margin-bottom: 16px; }
        .intro-text .feature-list { margin-top: 24px; display: flex; flex-direction: column; gap: 12px; }
        .intro-text .feature-list li { display: flex; align-items: center; gap: 12px; font-size: 15px; color: var(--text-secondary); }
        .intro-text .feature-list li i { color: var(--primary); font-size: 18px; width: 24px; text-align: center; }
        .intro-image { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-lg); }
        .intro-image img { width: 100%; height: 400px; object-fit: cover; transition: var(--transition); }
        .intro-image:hover img { transform: scale(1.02); }
        @media screen and (max-width: 860px) {
            .intro-grid { grid-template-columns: 1fr; gap: 36px; }
            .intro-text h3 { font-size: 26px; }
            .intro-image img { height: 280px; }
        }

        /* ===== 分类入口卡片 ===== */
        .category-cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
        .cat-card {
            position: relative; border-radius: var(--radius-md); overflow: hidden;
            background: var(--bg-light); box-shadow: var(--shadow-sm);
            transition: var(--transition); border: 1px solid var(--border-light);
            display: flex; flex-direction: column;
        }
        .cat-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); border-color: rgba(230,57,70,0.15); }
        .cat-card .card-img { height: 220px; overflow: hidden; }
        .cat-card .card-img img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
        .cat-card:hover .card-img img { transform: scale(1.05); }
        .cat-card .card-body { padding: 26px 28px; flex: 1; display: flex; flex-direction: column; }
        .cat-card .card-body h3 { font-size: 22px; font-weight: 700; margin-bottom: 10px; }
        .cat-card .card-body h3 a { color: var(--text-primary); }
        .cat-card .card-body h3 a:hover { color: var(--primary); }
        .cat-card .card-body p { color: var(--text-secondary); font-size: 15px; line-height: 1.7; flex: 1; margin-bottom: 16px; }
        .cat-card .card-body .cat-tag {
            display: inline-flex; align-items: center; gap: 6px;
            color: var(--primary); font-weight: 600; font-size: 14px;
            padding: 6px 16px; background: rgba(230,57,70,0.08); border-radius: 30px;
            align-self: flex-start; transition: var(--transition);
        }
        .cat-card .card-body .cat-tag i { font-size: 12px; transition: var(--transition); }
        .cat-card:hover .card-body .cat-tag { background: var(--primary); color: #fff; }
        .cat-card:hover .card-body .cat-tag i { transform: translateX(4px); }
        @media screen and (max-width: 768px) {
            .category-cards { grid-template-columns: 1fr; gap: 20px; }
            .cat-card .card-img { height: 180px; }
            .cat-card .card-body { padding: 20px 22px; }
        }

        /* ===== 最新资讯列表 (CMS) ===== */
        .news-list { display: flex; flex-direction: column; gap: 20px; }
        .news-item {
            display: flex; gap: 24px; align-items: flex-start;
            background: var(--bg-light); border-radius: var(--radius-md);
            padding: 22px 26px; box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light); transition: var(--transition);
        }
        .news-item:hover { box-shadow: var(--shadow-md); transform: translateX(4px); border-color: rgba(230,57,70,0.12); }
        .news-item .news-icon { flex-shrink: 0; width: 48px; height: 48px; border-radius: 12px; background: rgba(230,57,70,0.08); display: flex; align-items: center; justify-content: center; color: var(--primary); font-size: 20px; }
        .news-item .news-content { flex: 1; min-width: 0; }
        .news-item .news-content h4 { font-size: 18px; font-weight: 600; margin-bottom: 6px; }
        .news-item .news-content h4 a { color: var(--text-primary); }
        .news-item .news-content h4 a:hover { color: var(--primary); }
        .news-item .news-content p { color: var(--text-secondary); font-size: 14px; line-height: 1.6; margin-bottom: 8px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .news-item .news-meta { display: flex; flex-wrap: wrap; gap: 14px; font-size: 13px; color: var(--text-light); }
        .news-item .news-meta span { display: inline-flex; align-items: center; gap: 5px; }
        .news-item .news-meta .category-tag { background: rgba(230,57,70,0.08); color: var(--primary); padding: 2px 12px; border-radius: 20px; font-weight: 500; }
        .news-empty { text-align: center; padding: 50px 20px; color: var(--text-light); font-size: 16px; background: var(--bg-light); border-radius: var(--radius-md); border: 1px dashed var(--border-color); }
        @media screen and (max-width: 640px) {
            .news-item { flex-direction: column; gap: 12px; padding: 18px 20px; }
            .news-item .news-icon { width: 40px; height: 40px; font-size: 16px; }
            .news-item .news-content h4 { font-size: 16px; }
        }

        /* ===== 平台优势 ===== */
        .advantages-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; }
        .advantage-card {
            text-align: center; padding: 36px 24px;
            background: var(--bg-light); border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm); border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .advantage-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
        .advantage-card .adv-icon { width: 64px; height: 64px; border-radius: 18px; background: rgba(230,57,70,0.08); display: flex; align-items: center; justify-content: center; margin: 0 auto 18px; font-size: 28px; color: var(--primary); transition: var(--transition); }
        .advantage-card:hover .adv-icon { background: var(--primary); color: #fff; }
        .advantage-card h4 { font-size: 20px; font-weight: 700; margin-bottom: 8px; }
        .advantage-card p { color: var(--text-secondary); font-size: 14px; line-height: 1.7; margin-bottom: 0; }
        @media screen and (max-width: 860px) {
            .advantages-grid { grid-template-columns: repeat(2, 1fr); gap: 18px; }
        }
        @media screen and (max-width: 520px) {
            .advantages-grid { grid-template-columns: 1fr; }
        }

        /* ===== 数据统计 ===== */
        .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
        .stat-item { text-align: center; padding: 32px 16px; }
        .stat-item .stat-number { font-size: 48px; font-weight: 900; color: var(--text-white); line-height: 1.1; margin-bottom: 6px; }
        .stat-item .stat-number em { font-style: normal; color: var(--accent); }
        .stat-item .stat-label { font-size: 16px; color: rgba(255,255,255,0.65); font-weight: 500; }
        @media screen and (max-width: 768px) {
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
            .stat-item .stat-number { font-size: 36px; }
        }
        @media screen and (max-width: 520px) {
            .stats-grid { grid-template-columns: 1fr 1fr; }
            .stat-item { padding: 20px 12px; }
        }

        /* ===== 服务流程 ===== */
        .process-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; position: relative; }
        .process-steps::before {
            content: ''; position: absolute; top: 40px; left: 12%; right: 12%;
            height: 2px; background: linear-gradient(90deg, var(--primary), var(--accent), var(--primary));
            opacity: 0.25; z-index: 0;
        }
        .process-step { text-align: center; position: relative; z-index: 1; }
        .process-step .step-num { width: 56px; height: 56px; border-radius: 50%; background: var(--primary); color: #fff; font-size: 22px; font-weight: 800; display: flex; align-items: center; justify-content: center; margin: 0 auto 18px; box-shadow: 0 8px 24px rgba(230,57,70,0.28); position: relative; }
        .process-step .step-num::after { content: ''; position: absolute; inset: -6px; border-radius: 50%; border: 2px dashed rgba(230,57,70,0.2); animation: spin 24s linear infinite; }
        @keyframes spin { to { transform: rotate(360deg); } }
        .process-step h4 { font-size: 18px; font-weight: 700; margin-bottom: 8px; color: var(--text-white); }
        .process-step p { font-size: 14px; color: rgba(255,255,255,0.6); line-height: 1.6; margin-bottom: 0; max-width: 200px; margin-left: auto; margin-right: auto; }
        @media screen and (max-width: 860px) {
            .process-steps { grid-template-columns: repeat(2, 1fr); gap: 32px 20px; }
            .process-steps::before { display: none; }
        }
        @media screen and (max-width: 520px) {
            .process-steps { grid-template-columns: 1fr; gap: 28px; }
        }

        /* ===== FAQ ===== */
        .faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }
        .faq-item { background: var(--bg-light); border-radius: var(--radius-md); border: 1px solid var(--border-light); overflow: hidden; transition: var(--transition); }
        .faq-item:hover { border-color: rgba(230,57,70,0.12); }
        .faq-question { display: flex; align-items: center; justify-content: space-between; padding: 18px 24px; cursor: pointer; font-size: 16px; font-weight: 600; color: var(--text-primary); transition: var(--transition); user-select: none; }
        .faq-question i { color: var(--primary); font-size: 18px; transition: var(--transition); }
        .faq-item.active .faq-question i { transform: rotate(180deg); }
        .faq-answer { padding: 0 24px 18px; font-size: 15px; color: var(--text-secondary); line-height: 1.7; display: none; }
        .faq-item.active .faq-answer { display: block; }
        .faq-item.active { box-shadow: var(--shadow-sm); }
        @media screen and (max-width: 640px) {
            .faq-question { padding: 14px 18px; font-size: 15px; }
            .faq-answer { padding: 0 18px 14px; font-size: 14px; }
        }

        /* ===== CTA ===== */
        .cta-section {
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat fixed;
            position: relative; padding: 100px 0; text-align: center;
        }
        .cta-section::before { content: ''; position: absolute; inset: 0; background: rgba(13,27,42,0.78); }
        .cta-content { position: relative; z-index: 1; max-width: 680px; margin: 0 auto; padding: 0 24px; }
        .cta-content h2 { font-size: 40px; font-weight: 900; color: var(--text-white); margin-bottom: 16px; }
        .cta-content p { font-size: 18px; color: rgba(255,255,255,0.7); margin-bottom: 32px; line-height: 1.7; }
        .cta-content .cta-actions { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; }
        @media screen and (max-width: 768px) {
            .cta-section { padding: 70px 0; }
            .cta-content h2 { font-size: 30px; }
            .cta-content p { font-size: 16px; }
            .cta-section { background-attachment: scroll; }
        }

        /* ===== Footer ===== */
        .site-footer { background: var(--secondary); color: rgba(255,255,255,0.7); padding: 60px 0 30px; }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
        .footer-brand .logo { font-size: 22px; margin-bottom: 14px; }
        .footer-brand p { font-size: 14px; line-height: 1.7; max-width: 320px; }
        .footer-col h5 { color: var(--text-white); font-size: 16px; font-weight: 700; margin-bottom: 18px; }
        .footer-col a { display: block; color: rgba(255,255,255,0.6); font-size: 14px; padding: 4px 0; transition: var(--transition); }
        .footer-col a:hover { color: var(--primary); padding-left: 4px; }
        .footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding-top: 24px; display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 12px; font-size: 13px; color: rgba(255,255,255,0.45); }
        .footer-bottom a { color: rgba(255,255,255,0.55); }
        .footer-bottom a:hover { color: var(--primary); }
        @media screen and (max-width: 860px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
        }
        @media screen and (max-width: 520px) {
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }

        /* ===== 辅助 ===== */
        .text-center { text-align: center; }
        .mt-1 { margin-top: 12px; }
        .mt-2 { margin-top: 24px; }
        .mb-1 { margin-bottom: 12px; }
        .gap-1 { gap: 12px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

        /* ===== 按钮通用状态 ===== */
        .btn:focus-visible { outline: 3px solid var(--primary-light); outline-offset: 3px; }
        .btn:active { transform: scale(0.97); }

        /* ===== 移动端微调 ===== */
        @media screen and (max-width: 480px) {
            .hero h1 { font-size: 24px; }
            .hero p { font-size: 14px; }
            .section-title h2 { font-size: 24px; }
            .stat-item .stat-number { font-size: 30px; }
            .intro-text h3 { font-size: 22px; }
            .cat-card .card-body h3 { font-size: 19px; }
        }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #1a3a5c;
            --primary-dark: #0f2440;
            --primary-light: #2c6b9e;
            --primary-lighter: #e8f0f8;
            --accent: #e8a838;
            --accent-dark: #c88a1e;
            --accent-light: #f5d48a;
            --bg-body: #f8fafc;
            --bg-card: #ffffff;
            --bg-dark: #0f2440;
            --bg-section-alt: #f0f5fa;
            --text-dark: #1a2a3a;
            --text-body: #3a4a5a;
            --text-light: #6a7a8a;
            --text-white: #f0f4f8;
            --border-light: #e2e8f0;
            --border-medium: #c8d4e0;
            --shadow-sm: 0 2px 8px rgba(26,58,92,0.06);
            --shadow-md: 0 6px 24px rgba(26,58,92,0.10);
            --shadow-lg: 0 16px 48px rgba(26,58,92,0.14);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --transition: 0.25s cubic-bezier(0.4,0,0.2,1);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --max-width: 1200px;
            --header-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body {
            font-family: var(--font-sans);
            color: var(--text-body);
            background: var(--bg-body);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            padding-top: var(--header-height);
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: var(--primary-light); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--primary); }
        a:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
        button, input, textarea { font-family: inherit; font-size: inherit; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { color: var(--text-dark); line-height: 1.3; font-weight: 700; }
        h1 { font-size: 2.4rem; }
        h2 { font-size: 2.0rem; }
        h3 { font-size: 1.5rem; }
        h4 { font-size: 1.2rem; }
        p { margin-bottom: 1rem; }
        .container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; width: 100%; }

        /* ===== Foundation Overrides ===== */
        .grid-container { max-width: var(--max-width); padding-left: 24px; padding-right: 24px; }
        .grid-x { margin-left: -12px; margin-right: -12px; }
        .cell { padding-left: 12px; padding-right: 12px; }
        .button { border-radius: var(--radius-sm); transition: all var(--transition); font-weight: 600; }
        .button.primary { background: var(--primary); }
        .button.primary:hover { background: var(--primary-dark); transform: translateY(-1px); box-shadow: var(--shadow-md); }
        .button.secondary { background: var(--accent); color: #1a2a3a; }
        .button.secondary:hover { background: var(--accent-dark); transform: translateY(-1px); box-shadow: var(--shadow-md); }
        .badge { border-radius: 50px; padding: 0.2em 0.8em; font-weight: 500; font-size: 0.8rem; }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
            height: var(--header-height);
            background: rgba(255,255,255,0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: background var(--transition), box-shadow var(--transition);
        }
        .site-header.scrolled { background: rgba(255,255,255,0.98); box-shadow: var(--shadow-md); }
        .header-inner {
            max-width: var(--max-width); margin: 0 auto; padding: 0 24px;
            display: flex; align-items: center; justify-content: space-between;
            height: 100%;
        }
        .logo {
            display: flex; align-items: center; gap: 10px;
            font-size: 1.4rem; font-weight: 800; color: var(--primary-dark);
            text-decoration: none; letter-spacing: -0.3px;
            flex-shrink: 0;
        }
        .logo i { color: var(--accent); font-size: 1.6rem; }
        .logo span { background: linear-gradient(135deg, var(--primary-dark) 40%, var(--primary-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .logo:hover { opacity: 0.92; }
        .nav-menu { display: flex; align-items: center; gap: 6px; }
        .nav-menu a {
            padding: 8px 18px; border-radius: 50px;
            font-size: 0.95rem; font-weight: 500; color: var(--text-body);
            transition: all var(--transition); text-decoration: none;
            display: flex; align-items: center; gap: 6px;
            white-space: nowrap;
        }
        .nav-menu a i { font-size: 0.9rem; color: var(--text-light); transition: color var(--transition); }
        .nav-menu a:hover { background: var(--primary-lighter); color: var(--primary); }
        .nav-menu a:hover i { color: var(--primary-light); }
        .nav-menu a.active { background: var(--primary); color: #fff; box-shadow: 0 4px 14px rgba(26,58,92,0.25); }
        .nav-menu a.active i { color: rgba(255,255,255,0.85); }
        .nav-toggle {
            display: none; background: none; border: none; font-size: 1.6rem;
            color: var(--primary-dark); cursor: pointer; padding: 6px 10px;
            border-radius: var(--radius-sm); transition: background var(--transition);
        }
        .nav-toggle:hover { background: var(--primary-lighter); }
        .nav-toggle:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }

        /* ===== Page Banner ===== */
        .page-banner {
            position: relative;
            padding: 80px 0 60px;
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            color: var(--text-white);
            overflow: hidden;
        }
        .page-banner::before {
            content: '';
            position: absolute; inset: 0;
            background: linear-gradient(135deg, rgba(15,36,64,0.88) 30%, rgba(26,58,92,0.72) 70%);
            z-index: 1;
        }
        .page-banner .container { position: relative; z-index: 2; }
        .page-banner h1 {
            font-size: 2.6rem; color: #fff; margin-bottom: 12px;
            max-width: 840px; line-height: 1.25;
        }
        .page-banner .meta-line {
            display: flex; flex-wrap: wrap; gap: 16px 28px;
            color: rgba(255,255,255,0.78); font-size: 0.95rem;
            margin-top: 8px;
        }
        .page-banner .meta-line i { margin-right: 6px; color: var(--accent); }
        .page-banner .meta-line .category-tag {
            display: inline-block; padding: 2px 14px; border-radius: 50px;
            background: var(--accent); color: var(--primary-dark);
            font-weight: 600; font-size: 0.85rem;
        }
        .breadcrumb {
            display: flex; flex-wrap: wrap; gap: 8px 16px;
            color: rgba(255,255,255,0.6); font-size: 0.9rem;
            margin-bottom: 20px; padding: 0;
        }
        .breadcrumb a { color: rgba(255,255,255,0.7); text-decoration: none; }
        .breadcrumb a:hover { color: #fff; }
        .breadcrumb span.sep { color: rgba(255,255,255,0.35); }

        /* ===== Article Content ===== */
        .article-section { padding: 60px 0 80px; }
        .article-body {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 48px 56px;
            max-width: 880px;
            margin: 0 auto;
            border: 1px solid var(--border-light);
        }
        .article-body .content {
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--text-dark);
        }
        .article-body .content p { margin-bottom: 1.4rem; }
        .article-body .content h2, .article-body .content h3 { margin-top: 2rem; margin-bottom: 1rem; }
        .article-body .content img { border-radius: var(--radius-md); margin: 1.8rem 0; box-shadow: var(--shadow-sm); }
        .article-body .content ul, .article-body .content ol { margin-bottom: 1.4rem; padding-left: 1.6rem; }
        .article-body .content li { margin-bottom: 0.5rem; list-style: disc; }
        .article-body .content blockquote {
            border-left: 4px solid var(--accent);
            padding: 16px 24px; margin: 1.8rem 0;
            background: var(--primary-lighter);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-body);
            font-style: italic;
        }
        .article-body .content a { color: var(--primary-light); text-decoration: underline; }
        .article-body .content a:hover { color: var(--accent-dark); }

        .article-footer-info {
            margin-top: 40px; padding-top: 24px;
            border-top: 1px solid var(--border-light);
            display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center;
            gap: 16px;
        }
        .article-footer-info .tags {
            display: flex; flex-wrap: wrap; gap: 8px;
        }
        .article-footer-info .tags span {
            display: inline-block; padding: 4px 14px;
            background: var(--primary-lighter); color: var(--primary);
            border-radius: 50px; font-size: 0.85rem; font-weight: 500;
        }
        .article-footer-info .share-links {
            display: flex; gap: 10px;
        }
        .article-footer-info .share-links a {
            display: flex; align-items: center; justify-content: center;
            width: 40px; height: 40px; border-radius: 50%;
            background: var(--primary-lighter); color: var(--primary-light);
            transition: all var(--transition); font-size: 1.1rem;
        }
        .article-footer-info .share-links a:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }

        /* ===== Related Posts ===== */
        .related-section {
            padding: 60px 0 80px;
            background: var(--bg-section-alt);
        }
        .related-section .section-title {
            text-align: center; margin-bottom: 40px;
        }
        .related-section .section-title h2 { font-size: 1.8rem; }
        .related-section .section-title p { color: var(--text-light); max-width: 500px; margin: 8px auto 0; }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .related-card .card-img {
            width: 100%; height: 200px; object-fit: cover;
            display: block; background: var(--border-light);
        }
        .related-card .card-body { padding: 20px 22px 24px; }
        .related-card .card-body h4 { font-size: 1.1rem; margin-bottom: 8px; }
        .related-card .card-body h4 a { color: var(--text-dark); text-decoration: none; }
        .related-card .card-body h4 a:hover { color: var(--primary-light); }
        .related-card .card-body p { font-size: 0.93rem; color: var(--text-light); margin-bottom: 12px; line-height: 1.6; }
        .related-card .card-body .meta { font-size: 0.83rem; color: var(--text-light); display: flex; gap: 14px; }
        .related-card .card-body .meta i { margin-right: 4px; color: var(--accent); }

        /* ===== CTA Section ===== */
        .cta-section {
            padding: 70px 0;
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            color: #fff;
            text-align: center;
            position: relative;
        }
        .cta-section::before {
            content: '';
            position: absolute; inset: 0;
            background: linear-gradient(135deg, rgba(15,36,64,0.90) 30%, rgba(26,58,92,0.78) 70%);
            z-index: 1;
        }
        .cta-section .container { position: relative; z-index: 2; }
        .cta-section h2 { font-size: 2.0rem; color: #fff; margin-bottom: 12px; }
        .cta-section p { font-size: 1.1rem; color: rgba(255,255,255,0.8); max-width: 600px; margin: 0 auto 28px; }
        .cta-section .button { font-size: 1.1rem; padding: 14px 40px; border-radius: 50px; }

        /* ===== Not Found ===== */
        .not-found-box {
            text-align: center; padding: 60px 20px;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            max-width: 600px; margin: 40px auto;
        }
        .not-found-box i { font-size: 3.6rem; color: var(--text-light); margin-bottom: 16px; }
        .not-found-box h2 { font-size: 1.8rem; margin-bottom: 12px; }
        .not-found-box p { color: var(--text-light); margin-bottom: 24px; }
        .not-found-box .button { border-radius: 50px; }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.75);
            padding: 60px 0 0;
        }
        .site-footer .container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255,255,255,0.10);
        }
        .footer-brand .logo { font-size: 1.3rem; margin-bottom: 16px; color: #fff; }
        .footer-brand .logo i { color: var(--accent); }
        .footer-brand .logo span { -webkit-text-fill-color: #fff; background: none; }
        .footer-brand p { font-size: 0.95rem; line-height: 1.7; color: rgba(255,255,255,0.6); max-width: 360px; }
        .footer-col h5 { color: #fff; font-size: 1.05rem; margin-bottom: 16px; font-weight: 600; }
        .footer-col a {
            display: block; color: rgba(255,255,255,0.6);
            font-size: 0.92rem; padding: 4px 0;
            transition: color var(--transition); text-decoration: none;
        }
        .footer-col a:hover { color: var(--accent); }
        .footer-col a i { width: 20px; margin-right: 6px; color: var(--accent); }
        .footer-bottom {
            display: flex; flex-wrap: wrap; justify-content: space-between;
            padding: 24px 0 30px;
            font-size: 0.88rem; color: rgba(255,255,255,0.45);
        }
        .footer-bottom span { margin: 4px 0; }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .related-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
            .article-body { padding: 36px 32px; }
            .page-banner h1 { font-size: 2.2rem; }
        }
        @media (max-width: 768px) {
            :root { --header-height: 64px; }
            .nav-menu {
                position: fixed; top: var(--header-height); left: 0; right: 0;
                background: rgba(255,255,255,0.98);
                backdrop-filter: blur(12px);
                -webkit-backdrop-filter: blur(12px);
                flex-direction: column; padding: 16px 24px 24px;
                border-bottom: 1px solid var(--border-light);
                box-shadow: var(--shadow-md);
                display: none;
                gap: 4px;
                max-height: calc(100vh - var(--header-height));
                overflow-y: auto;
            }
            .nav-menu.open { display: flex; }
            .nav-menu a { padding: 12px 20px; border-radius: var(--radius-sm); font-size: 1rem; }
            .nav-toggle { display: block; }
            .page-banner { padding: 60px 0 44px; }
            .page-banner h1 { font-size: 1.7rem; }
            .page-banner .meta-line { gap: 12px 20px; font-size: 0.88rem; }
            .article-body { padding: 28px 20px; border-radius: var(--radius-md); }
            .article-body .content { font-size: 1rem; }
            .related-grid { grid-template-columns: 1fr; gap: 20px; }
            .related-section { padding: 44px 0 56px; }
            .cta-section h2 { font-size: 1.6rem; }
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; align-items: center; text-align: center; gap: 6px; }
            .article-footer-info { flex-direction: column; align-items: flex-start; gap: 14px; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .header-inner { padding: 0 16px; }
            .logo { font-size: 1.2rem; }
            .logo i { font-size: 1.3rem; }
            .page-banner h1 { font-size: 1.4rem; }
            .article-body { padding: 20px 16px; }
            .related-card .card-img { height: 160px; }
            .cta-section .button { width: 100%; }
        }

        /* ===== Utility ===== */
        .text-center { text-align: center; }
        .mt-1 { margin-top: 1rem; }
        .mt-2 { margin-top: 2rem; }
        .mb-1 { margin-bottom: 1rem; }
        .mb-2 { margin-bottom: 2rem; }
        .gap-1 { gap: 1rem; }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #1a3a5c;
            --primary-light: #2d6a9f;
            --primary-dark: #0f2340;
            --accent: #e8b830;
            --accent-light: #f5d060;
            --accent-dark: #c99a20;
            --bg-light: #f7f9fc;
            --bg-white: #ffffff;
            --bg-dark: #0f1a2e;
            --text-dark: #1a2a3a;
            --text-body: #3a4a5a;
            --text-muted: #7a8a9a;
            --text-white: #f0f4f8;
            --border: #dce4ec;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 6px 24px rgba(0,0,0,0.08);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
            --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --max-width: 1200px;
            --header-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-light);
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: var(--primary-light); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary); }
        button { cursor: pointer; font-family: inherit; border: none; background: none; }
        input, textarea { font-family: inherit; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { color: var(--text-dark); line-height: 1.3; font-weight: 700; }
        h1 { font-size: 2.6rem; }
        h2 { font-size: 2rem; margin-bottom: 0.5rem; }
        h3 { font-size: 1.4rem; }
        h4 { font-size: 1.15rem; }
        p { margin-bottom: 0.75rem; }
        .container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }

        /* ===== Foundation Overrides ===== */
        .grid-container { max-width: var(--max-width); padding-left: 24px; padding-right: 24px; }
        .grid-x { margin-left: -12px; margin-right: -12px; }
        .cell { padding-left: 12px; padding-right: 12px; }
        .button { border-radius: var(--radius-sm); transition: var(--transition); font-weight: 600; }
        .button:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
        .badge { border-radius: 50px; padding: 0.2rem 0.8rem; font-size: 0.85rem; }

        /* ===== Header & Navigation ===== */
        .site-header {
            position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
            background: rgba(255,255,255,0.95); backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
            height: var(--header-height);
            box-shadow: 0 1px 8px rgba(0,0,0,0.04);
            transition: var(--transition);
        }
        .site-header.scrolled { background: rgba(255,255,255,0.98); box-shadow: 0 2px 16px rgba(0,0,0,0.08); }
        .header-inner {
            max-width: var(--max-width); margin: 0 auto; padding: 0 24px;
            display: flex; align-items: center; justify-content: space-between;
            height: 100%;
        }
        .logo {
            display: flex; align-items: center; gap: 10px; font-size: 1.3rem; font-weight: 800;
            color: var(--primary); letter-spacing: -0.3px;
        }
        .logo i { color: var(--accent); font-size: 1.5rem; }
        .logo span { background: linear-gradient(135deg, var(--primary) 40%, var(--primary-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .logo:hover { opacity: 0.9; }

        .nav-menu { display: flex; align-items: center; gap: 6px; }
        .nav-menu a {
            padding: 8px 18px; border-radius: 50px; font-size: 0.95rem; font-weight: 500;
            color: var(--text-body); transition: var(--transition); position: relative;
            display: flex; align-items: center; gap: 6px;
        }
        .nav-menu a i { font-size: 0.9rem; color: var(--text-muted); transition: var(--transition); }
        .nav-menu a:hover { color: var(--primary); background: rgba(26,58,92,0.06); }
        .nav-menu a:hover i { color: var(--primary-light); }
        .nav-menu a.active { color: var(--primary); background: rgba(26,58,92,0.1); font-weight: 600; }
        .nav-menu a.active i { color: var(--primary); }

        .nav-toggle { display: none; font-size: 1.5rem; color: var(--primary); padding: 6px 10px; border-radius: var(--radius-sm); }
        .nav-toggle:hover { background: rgba(26,58,92,0.06); }

        /* ===== Hero / Page Banner ===== */
        .page-banner {
            margin-top: var(--header-height);
            padding: 80px 0 72px;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
            position: relative; overflow: hidden;
            min-height: 320px;
            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: 0.18; mix-blend-mode: overlay;
        }
        .page-banner::after {
            content: ''; position: absolute; inset: 0;
            background: radial-gradient(ellipse at 30% 40%, rgba(232,184,48,0.15) 0%, transparent 70%);
        }
        .page-banner .container { position: relative; z-index: 2; text-align: center; }
        .page-banner h1 {
            color: #fff; font-size: 2.8rem; font-weight: 800; margin-bottom: 12px;
            text-shadow: 0 2px 20px rgba(0,0,0,0.2);
        }
        .page-banner p {
            color: rgba(255,255,255,0.85); font-size: 1.15rem; max-width: 680px; margin: 0 auto;
            line-height: 1.7;
        }
        .page-banner .banner-tag {
            display: inline-block; background: var(--accent); color: var(--primary-dark);
            padding: 4px 20px; border-radius: 50px; font-size: 0.85rem; font-weight: 700;
            margin-bottom: 18px; letter-spacing: 1px;
        }

        /* ===== Section Spacing ===== */
        .section { padding: 72px 0; }
        .section-alt { background: var(--bg-white); }
        .section-dark { background: var(--bg-dark); color: var(--text-white); }
        .section-dark h2, .section-dark h3 { color: #fff; }
        .section-title { text-align: center; margin-bottom: 48px; }
        .section-title h2 { position: relative; display: inline-block; }
        .section-title h2::after {
            content: ''; display: block; width: 60px; height: 4px; border-radius: 4px;
            background: var(--accent); margin: 12px auto 0;
        }
        .section-title p { color: var(--text-muted); max-width: 560px; margin: 12px auto 0; font-size: 1.05rem; }

        /* ===== Cards ===== */
        .news-card {
            background: var(--bg-white); border-radius: var(--radius-md); overflow: hidden;
            box-shadow: var(--shadow-sm); transition: var(--transition);
            height: 100%; display: flex; flex-direction: column;
            border: 1px solid var(--border);
        }
        .news-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
        .news-card .card-img {
            width: 100%; height: 200px; object-fit: cover; transition: var(--transition);
        }
        .news-card:hover .card-img { transform: scale(1.03); }
        .news-card .card-body { padding: 20px 22px 24px; flex: 1; display: flex; flex-direction: column; }
        .news-card .card-tag {
            display: inline-block; background: rgba(26,58,92,0.08); color: var(--primary);
            padding: 2px 12px; border-radius: 50px; font-size: 0.8rem; font-weight: 600;
            margin-bottom: 10px; align-self: flex-start;
        }
        .news-card .card-tag.accent { background: rgba(232,184,48,0.18); color: var(--accent-dark); }
        .news-card h3 { font-size: 1.15rem; margin-bottom: 8px; line-height: 1.4; }
        .news-card h3 a { color: var(--text-dark); }
        .news-card h3 a:hover { color: var(--primary-light); }
        .news-card p { color: var(--text-muted); font-size: 0.92rem; flex: 1; margin-bottom: 12px; }
        .news-card .card-meta { display: flex; align-items: center; gap: 16px; font-size: 0.82rem; color: var(--text-muted); border-top: 1px solid var(--border); padding-top: 12px; margin-top: auto; }
        .news-card .card-meta i { margin-right: 4px; }

        /* ===== Feature Block (图文专题) ===== */
        .feature-block {
            display: flex; align-items: center; gap: 48px;
            background: var(--bg-white); border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md); overflow: hidden;
            border: 1px solid var(--border);
        }
        .feature-block.reverse { flex-direction: row-reverse; }
        .feature-block .feature-img {
            flex: 0 0 48%; min-height: 320px;
            background: var(--primary) center/cover no-repeat;
            position: relative;
        }
        .feature-block .feature-img::after {
            content: ''; position: absolute; inset: 0;
            background: linear-gradient(135deg, rgba(26,58,92,0.3), transparent);
        }
        .feature-block .feature-content { flex: 1; padding: 40px 48px 40px 0; }
        .feature-block.reverse .feature-content { padding: 40px 0 40px 48px; }
        .feature-block .feature-content .tag {
            display: inline-block; background: var(--accent); color: var(--primary-dark);
            padding: 2px 16px; border-radius: 50px; font-size: 0.8rem; font-weight: 700;
            margin-bottom: 14px;
        }
        .feature-block .feature-content h3 { font-size: 1.6rem; margin-bottom: 12px; }
        .feature-block .feature-content p { color: var(--text-muted); line-height: 1.8; }

        /* ===== Tag Filters ===== */
        .tag-filters { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-bottom: 36px; }
        .tag-filters .tag-btn {
            padding: 8px 22px; border-radius: 50px; font-size: 0.9rem; font-weight: 500;
            background: var(--bg-white); color: var(--text-body); border: 1px solid var(--border);
            transition: var(--transition); cursor: pointer;
        }
        .tag-filters .tag-btn:hover { border-color: var(--primary-light); color: var(--primary); background: rgba(26,58,92,0.04); }
        .tag-filters .tag-btn.active { background: var(--primary); color: #fff; border-color: var(--primary); }

        /* ===== Timeline / List ===== */
        .news-list { max-width: 800px; margin: 0 auto; }
        .news-list-item {
            display: flex; gap: 20px; padding: 20px 0;
            border-bottom: 1px solid var(--border); transition: var(--transition);
        }
        .news-list-item:last-child { border-bottom: none; }
        .news-list-item:hover { padding-left: 12px; }
        .news-list-item .list-date { flex: 0 0 80px; font-size: 0.9rem; color: var(--text-muted); font-weight: 500; }
        .news-list-item .list-content { flex: 1; }
        .news-list-item .list-content h4 { font-size: 1.05rem; margin-bottom: 4px; }
        .news-list-item .list-content h4 a { color: var(--text-dark); }
        .news-list-item .list-content h4 a:hover { color: var(--primary-light); }
        .news-list-item .list-content .list-desc { color: var(--text-muted); font-size: 0.9rem; }
        .news-list-item .list-tag { font-size: 0.78rem; color: var(--primary-light); font-weight: 600; }

        /* ===== Stats / Counters ===== */
        .stats-grid { display: flex; flex-wrap: wrap; gap: 32px; justify-content: center; text-align: center; }
        .stats-grid .stat-item { flex: 0 0 180px; padding: 24px 16px; background: rgba(255,255,255,0.06); border-radius: var(--radius-md); border: 1px solid rgba(255,255,255,0.1); }
        .stats-grid .stat-item .num { font-size: 2.4rem; font-weight: 800; color: var(--accent); line-height: 1.2; }
        .stats-grid .stat-item .label { font-size: 0.9rem; color: rgba(255,255,255,0.75); margin-top: 6px; }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            padding: 64px 0; text-align: center; position: relative; overflow: hidden;
        }
        .cta-section::before {
            content: ''; position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.1; mix-blend-mode: overlay;
        }
        .cta-section .container { position: relative; z-index: 2; }
        .cta-section h2 { color: #fff; font-size: 2rem; margin-bottom: 12px; }
        .cta-section p { color: rgba(255,255,255,0.8); max-width: 520px; margin: 0 auto 24px; font-size: 1.05rem; }
        .cta-section .button {
            background: var(--accent); color: var(--primary-dark); padding: 14px 44px;
            font-size: 1.05rem; font-weight: 700; border-radius: 50px;
        }
        .cta-section .button:hover { background: var(--accent-light); transform: translateY(-3px); box-shadow: 0 8px 32px rgba(232,184,48,0.35); }

        /* ===== FAQ ===== */
        .faq-list { max-width: 760px; margin: 0 auto; }
        .faq-item {
            background: var(--bg-white); border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm); margin-bottom: 14px;
            border: 1px solid var(--border); overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { box-shadow: var(--shadow-md); }
        .faq-item .faq-q {
            padding: 18px 24px; font-weight: 600; color: var(--text-dark); font-size: 1.05rem;
            display: flex; align-items: center; justify-content: space-between; cursor: pointer;
            transition: var(--transition);
        }
        .faq-item .faq-q i { color: var(--primary-light); transition: var(--transition); font-size: 1.1rem; }
        .faq-item .faq-q:hover { background: rgba(26,58,92,0.03); }
        .faq-item.active .faq-q i { transform: rotate(180deg); }
        .faq-item .faq-a {
            padding: 0 24px; max-height: 0; overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            color: var(--text-muted); line-height: 1.7;
        }
        .faq-item.active .faq-a { padding: 0 24px 20px; max-height: 320px; }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark); color: rgba(255,255,255,0.7); padding: 56px 0 24px;
            border-top: 3px solid var(--accent);
        }
        .footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 40px; margin-bottom: 32px; }
        .footer-brand .logo { color: #fff; font-size: 1.2rem; margin-bottom: 12px; }
        .footer-brand .logo i { color: var(--accent); }
        .footer-brand p { font-size: 0.9rem; line-height: 1.7; color: rgba(255,255,255,0.6); max-width: 300px; }
        .footer-col h5 { color: #fff; font-size: 1rem; font-weight: 700; margin-bottom: 16px; position: relative; padding-bottom: 8px; }
        .footer-col h5::after { content: ''; display: block; width: 28px; height: 3px; background: var(--accent); border-radius: 4px; margin-top: 6px; }
        .footer-col a { display: block; color: rgba(255,255,255,0.6); font-size: 0.9rem; padding: 4px 0; transition: var(--transition); }
        .footer-col a:hover { color: var(--accent); padding-left: 6px; }
        .footer-col a i { width: 20px; color: var(--accent); }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08); padding-top: 20px; margin-top: 8px;
            display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px;
            font-size: 0.85rem; color: rgba(255,255,255,0.4);
        }

        /* ===== Mobile Responsive ===== */
        @media (max-width: 1024px) {
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .feature-block { flex-direction: column !important; }
            .feature-block .feature-img { flex: 0 0 240px; width: 100%; min-height: 240px; }
            .feature-block .feature-content { padding: 28px 32px !important; }
            .page-banner h1 { font-size: 2.2rem; }
        }

        @media (max-width: 768px) {
            .nav-menu { display: none; position: absolute; top: var(--header-height); left: 0; right: 0; background: var(--bg-white); flex-direction: column; padding: 16px 24px; box-shadow: var(--shadow-lg); border-bottom: 1px solid var(--border); gap: 4px; }
            .nav-menu.open { display: flex; }
            .nav-menu a { padding: 12px 18px; border-radius: var(--radius-sm); width: 100%; }
            .nav-toggle { display: block; }

            .page-banner { padding: 56px 0 48px; min-height: 240px; }
            .page-banner h1 { font-size: 1.8rem; }
            .page-banner p { font-size: 1rem; }

            .section { padding: 48px 0; }
            .section-title { margin-bottom: 32px; }
            .section-title h2 { font-size: 1.6rem; }

            .news-card .card-img { height: 170px; }
            .stats-grid .stat-item { flex: 0 0 140px; }
            .stats-grid .stat-item .num { font-size: 1.8rem; }

            .cta-section { padding: 48px 0; }
            .cta-section h2 { font-size: 1.5rem; }

            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; text-align: center; }

            .tag-filters .tag-btn { padding: 6px 16px; font-size: 0.82rem; }
        }

        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .page-banner h1 { font-size: 1.5rem; }
            .page-banner p { font-size: 0.92rem; }
            .news-card .card-body { padding: 16px 18px 20px; }
            .news-card .card-img { height: 150px; }
            .feature-block .feature-content { padding: 20px 18px !important; }
            .feature-block .feature-content h3 { font-size: 1.2rem; }
            .stats-grid { gap: 16px; }
            .stats-grid .stat-item { flex: 0 0 120px; padding: 16px 12px; }
            .faq-item .faq-q { padding: 14px 18px; font-size: 0.95rem; }
            .news-list-item { flex-direction: column; gap: 6px; }
            .news-list-item .list-date { flex: unset; }
            .cta-section .button { padding: 12px 32px; font-size: 0.95rem; }
        }

        /* ===== Utility ===== */
        .text-center { text-align: center; }
        .mt-1 { margin-top: 12px; }
        .mt-2 { margin-top: 24px; }
        .mb-1 { margin-bottom: 12px; }
        .mb-2 { margin-bottom: 24px; }
        .gap-1 { gap: 16px; }
        .gap-2 { gap: 24px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .rounded-full { border-radius: 50px; }
        .shadow-hover { transition: var(--transition); }
        .shadow-hover:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }

        /* ===== Accessibility ===== */
        a:focus-visible, button:focus-visible, .tag-btn:focus-visible {
            outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 4px;
        }

        /* ===== Back to Top ===== */
        .back-top {
            position: fixed; bottom: 32px; right: 32px; z-index: 999;
            width: 48px; height: 48px; border-radius: 50%;
            background: var(--primary); color: #fff; font-size: 1.2rem;
            display: flex; align-items: center; justify-content: center;
            box-shadow: var(--shadow-md); opacity: 0; visibility: hidden;
            transition: var(--transition); border: 2px solid rgba(255,255,255,0.2);
        }
        .back-top.visible { opacity: 1; visibility: visible; }
        .back-top:hover { background: var(--primary-light); transform: translateY(-4px); box-shadow: var(--shadow-lg); }

/* roulang page: category2 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a3c5e;
            --primary-dark: #0f2a44;
            --primary-light: #2a6a9e;
            --accent: #e85d3a;
            --accent-hover: #d04a2a;
            --accent-light: #fce9e3;
            --bg-body: #f5f7fa;
            --bg-card: #ffffff;
            --bg-alt: #eef2f7;
            --bg-dark: #0f1a2b;
            --text-dark: #1a1e2b;
            --text-body: #3a4050;
            --text-muted: #7a8295;
            --text-light: #f0f4fe;
            --border-color: #dce2ed;
            --border-light: #e8ecf3;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(26, 60, 94, 0.06);
            --shadow-md: 0 6px 24px rgba(26, 60, 94, 0.10);
            --shadow-lg: 0 16px 48px rgba(26, 60, 94, 0.14);
            --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-h: 72px;
        }

        /* ===== 基础 Reset / Base ===== */
        *,
        *::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);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover,
        a:focus-visible {
            color: var(--primary-dark);
        }
        a:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
        }
        ul,
        ol {
            margin: 0;
            padding: 0;
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            margin: 0 0 0.5em 0;
            color: var(--text-dark);
            font-weight: 700;
            line-height: 1.3;
        }
        p {
            margin: 0 0 1em 0;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Foundation 覆盖 ===== */
        .grid-container {
            max-width: var(--container-max);
            padding-left: 24px;
            padding-right: 24px;
        }
        .grid-x {
            margin-left: -12px;
            margin-right: -12px;
        }
        .cell {
            padding-left: 12px;
            padding-right: 12px;
        }
        .button {
            border-radius: var(--radius-sm);
            font-weight: 600;
            transition: var(--transition);
            padding: 12px 28px;
            font-size: 0.95rem;
        }
        .button.primary {
            background: var(--primary);
            border-color: var(--primary);
        }
        .button.primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        .button.hollow {
            border-color: var(--primary);
            color: var(--primary);
        }
        .button.hollow:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== Header / 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-h);
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-light);
            box-shadow: 0 1px 12px rgba(26, 60, 94, 0.05);
            transition: var(--transition);
        }
        .header-inner {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.3px;
            flex-shrink: 0;
        }
        .logo i {
            font-size: 1.6rem;
            color: var(--accent);
            background: var(--accent-light);
            padding: 8px;
            border-radius: 50%;
        }
        .logo span {
            background: linear-gradient(135deg, var(--primary) 50%, var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-menu a {
            padding: 10px 18px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.92rem;
            color: var(--text-body);
            transition: var(--transition);
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-menu a i {
            font-size: 0.85rem;
        }
        .nav-menu a:hover,
        .nav-menu a:focus-visible {
            background: var(--accent-light);
            color: var(--accent);
        }
        .nav-menu a.active {
            background: var(--primary);
            color: #fff;
            box-shadow: var(--shadow-sm);
        }
        .nav-menu a.active i {
            color: #fff;
        }
        .nav-toggle {
            display: none;
            background: transparent;
            border: none;
            font-size: 1.5rem;
            color: var(--primary);
            cursor: pointer;
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .nav-toggle:hover {
            background: var(--accent-light);
        }

        /* ===== Hero 横幅 (分类页) ===== */
        .category-hero {
            margin-top: var(--header-h);
            padding: 80px 0 70px;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
            position: relative;
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: center;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.18;
            mix-blend-mode: overlay;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 80px;
            background: linear-gradient(to top, var(--bg-body), transparent);
        }
        .category-hero .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .category-hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.25);
            letter-spacing: 1px;
        }
        .category-hero .hero-sub {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 680px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }
        .category-hero .breadcrumb {
            display: flex;
            justify-content: center;
            gap: 10px;
            font-size: 0.92rem;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 10px;
        }
        .category-hero .breadcrumb a {
            color: rgba(255, 255, 255, 0.85);
        }
        .category-hero .breadcrumb a:hover {
            color: #fff;
            text-decoration: underline;
        }
        .category-hero .breadcrumb span {
            color: rgba(255, 255, 255, 0.5);
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: 70px 0;
        }
        .section-alt {
            background: var(--bg-alt);
        }
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-dark);
            margin-bottom: 8px;
            position: relative;
            display: inline-block;
        }
        .section-title h2::after {
            content: '';
            display: block;
            width: 60px;
            height: 4px;
            background: var(--accent);
            border-radius: 4px;
            margin: 12px auto 0;
        }
        .section-title p {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 600px;
            margin: 12px auto 0;
        }
        .section-tag {
            display: inline-block;
            background: var(--accent-light);
            color: var(--accent);
            padding: 4px 16px;
            border-radius: 30px;
            font-size: 0.82rem;
            font-weight: 600;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        /* ===== 服务卡片网格 ===== */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
        }
        .service-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 32px 24px 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            text-align: center;
        }
        .service-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: var(--primary-light);
        }
        .service-card .icon-wrap {
            width: 68px;
            height: 68px;
            margin: 0 auto 18px;
            background: var(--accent-light);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2rem;
            color: var(--accent);
            transition: var(--transition);
        }
        .service-card:hover .icon-wrap {
            background: var(--primary);
            color: #fff;
            transform: scale(1.05);
        }
        .service-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-dark);
        }
        .service-card p {
            font-size: 0.92rem;
            color: var(--text-muted);
            margin-bottom: 0;
            line-height: 1.6;
        }
        .service-card .badge {
            display: inline-block;
            margin-top: 14px;
            background: var(--accent-light);
            color: var(--accent);
            padding: 3px 14px;
            border-radius: 30px;
            font-size: 0.78rem;
            font-weight: 600;
        }

        /* ===== 案例网格 ===== */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .case-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .case-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
        }
        .case-card .case-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: 0;
        }
        .case-card .case-body {
            padding: 22px 22px 26px;
        }
        .case-card .case-body .tag {
            display: inline-block;
            background: var(--accent-light);
            color: var(--accent);
            padding: 2px 14px;
            border-radius: 30px;
            font-size: 0.75rem;
            font-weight: 600;
            margin-bottom: 10px;
        }
        .case-card .case-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--text-dark);
        }
        .case-card .case-body p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 0;
            line-height: 1.6;
        }
        .case-card .case-body .case-meta {
            display: flex;
            justify-content: space-between;
            font-size: 0.82rem;
            color: var(--text-muted);
            margin-top: 14px;
            padding-top: 14px;
            border-top: 1px solid var(--border-light);
        }

        /* ===== 赛事流程 ===== */
        .flow-steps {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 16px;
            counter-reset: step;
        }
        .flow-step {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 28px 18px 24px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            position: relative;
            transition: var(--transition);
        }
        .flow-step:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--primary-light);
        }
        .flow-step .step-num {
            width: 46px;
            height: 46px;
            margin: 0 auto 14px;
            background: var(--primary);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.2rem;
        }
        .flow-step h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--text-dark);
        }
        .flow-step p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 0;
            line-height: 1.5;
        }
        .flow-step .step-arrow {
            position: absolute;
            right: -12px;
            top: 50%;
            transform: translateY(-50%);
            font-size: 1.3rem;
            color: var(--primary-light);
            opacity: 0.4;
        }
        .flow-step:last-child .step-arrow {
            display: none;
        }

        /* ===== FAQ 区块 ===== */
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-dark);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
            gap: 16px;
        }
        .faq-question:hover {
            background: var(--accent-light);
        }
        .faq-question i {
            transition: var(--transition);
            color: var(--primary-light);
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 24px 18px;
            font-size: 0.95rem;
            color: var(--text-body);
            line-height: 1.7;
            display: none;
        }
        .faq-item.active .faq-answer {
            display: block;
        }

        /* ===== CTA 区块 ===== */
        .cta-section {
            padding: 70px 0;
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.10;
            mix-blend-mode: overlay;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .cta-section h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 600px;
            margin: 0 auto 28px;
        }
        .cta-section .button.large {
            padding: 16px 44px;
            font-size: 1.1rem;
            border-radius: 50px;
            background: var(--accent);
            border-color: var(--accent);
            color: #fff;
            font-weight: 700;
        }
        .cta-section .button.large:hover {
            background: var(--accent-hover);
            border-color: var(--accent-hover);
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(232, 93, 58, 0.35);
        }
        .cta-section .button.large i {
            margin-right: 8px;
        }

        /* ===== 统计数字 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
        }
        .stat-item {
            text-align: center;
            padding: 24px 12px;
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .stat-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
        }
        .stat-item .stat-num {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 4px;
        }
        .stat-item .stat-label {
            font-size: 0.92rem;
            color: var(--text-muted);
            font-weight: 500;
        }
        .stat-item .stat-icon {
            font-size: 1.6rem;
            color: var(--accent);
            margin-bottom: 10px;
        }

        /* ===== 页脚 (与首页一致) ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 50px 0 30px;
        }
        .site-footer .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-brand .logo {
            font-size: 1.2rem;
            margin-bottom: 12px;
        }
        .footer-brand .logo i {
            font-size: 1.3rem;
            padding: 6px;
        }
        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
            max-width: 320px;
        }
        .footer-col h5 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .footer-col a {
            display: block;
            padding: 4px 0;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-col a i {
            width: 20px;
            margin-right: 6px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 22px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.84rem;
            color: rgba(255, 255, 255, 0.45);
        }
        .footer-bottom span:last-child {
            text-align: right;
        }

        /* ===== 响应式断点 ===== */
        @media (max-width: 1024px) {
            .service-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .case-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .flow-steps {
                grid-template-columns: repeat(3, 1fr);
            }
            .flow-step .step-arrow {
                display: none;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
            .category-hero h1 {
                font-size: 2.2rem;
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                position: absolute;
                top: var(--header-h);
                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;
                box-shadow: 0 12px 40px rgba(26, 60, 94, 0.12);
                border-bottom: 1px solid var(--border-light);
                gap: 6px;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu a {
                padding: 12px 16px;
                font-size: 1rem;
                width: 100%;
                justify-content: center;
            }
            .nav-toggle {
                display: block;
            }
            .category-hero {
                padding: 60px 0 50px;
                min-height: 240px;
            }
            .category-hero h1 {
                font-size: 1.8rem;
            }
            .category-hero .hero-sub {
                font-size: 1rem;
            }
            .section {
                padding: 50px 0;
            }
            .section-title h2 {
                font-size: 1.6rem;
            }
            .service-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .service-card {
                padding: 24px 16px 20px;
            }
            .case-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .flow-steps {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .stat-item .stat-num {
                font-size: 2rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .cta-section h2 {
                font-size: 1.6rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .header-inner {
                padding: 0 16px;
            }
            .logo {
                font-size: 1.1rem;
            }
            .logo i {
                font-size: 1.2rem;
                padding: 6px;
            }
            .category-hero h1 {
                font-size: 1.5rem;
            }
            .service-grid {
                grid-template-columns: 1fr;
            }
            .flow-steps {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-item .stat-num {
                font-size: 1.6rem;
            }
            .section-title h2 {
                font-size: 1.4rem;
            }
            .cta-section .button.large {
                padding: 14px 28px;
                font-size: 1rem;
            }
        }

        /* ===== 辅助工具 ===== */
        .text-center {
            text-align: center;
        }
        .mt-2 {
            margin-top: 20px;
        }
        .mb-2 {
            margin-bottom: 20px;
        }
        .gap-1 {
            gap: 12px;
        }
        .flex-center {
            display: flex;
            justify-content: center;
            align-items: center;
        }
        .badge-pill {
            display: inline-block;
            background: var(--accent-light);
            color: var(--accent);
            padding: 4px 18px;
            border-radius: 30px;
            font-size: 0.8rem;
            font-weight: 600;
        }