/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0a1e3c;
            --primary-light: #132d5a;
            --primary-dark: #060f1f;
            --accent: #c9a84c;
            --accent-light: #e0c56a;
            --accent-dark: #a8882e;
            --bg-body: #f4f6fa;
            --bg-card: #ffffff;
            --bg-dark: #0a1e3c;
            --text-primary: #0a1a2e;
            --text-secondary: #4a5568;
            --text-light: #8a94a6;
            --text-white: #ffffff;
            --border-color: #e2e8f0;
            --border-accent: #c9a84c;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(10, 30, 60, 0.06);
            --shadow-md: 0 8px 30px rgba(10, 30, 60, 0.10);
            --shadow-lg: 0 20px 50px rgba(10, 30, 60, 0.14);
            --shadow-accent: 0 8px 30px rgba(201, 168, 76, 0.25);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --header-height: 72px;
        }

        /* ===== Reset ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; font-size: 16px; }
        body {
            font-family: var(--font-sans);
            color: var(--text-primary);
            background: var(--bg-body);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            padding-top: var(--header-height);
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        button, input, select, textarea { font-family: inherit; font-size: inherit; outline: none; border: none; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { font-weight: 600; line-height: 1.3; }
        h1 { font-size: 2.8rem; }
        h2 { font-size: 2.0rem; }
        h3 { font-size: 1.4rem; }
        p { margin-bottom: 0.8rem; }

        /* ===== 容器 ===== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .container-wide {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 80px 0;
        }
        .section-header {
            text-align: center;
            margin-bottom: 56px;
        }
        .section-header h2 {
            font-size: 2.2rem;
            color: var(--primary);
            margin-bottom: 12px;
            position: relative;
            display: inline-block;
        }
        .section-header h2::after {
            content: '';
            display: block;
            width: 60px;
            height: 4px;
            background: var(--accent);
            border-radius: 4px;
            margin: 12px auto 0;
        }
        .section-header p {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 12px auto 0;
        }
        .section-bg-dark {
            background: var(--bg-dark);
            color: var(--text-white);
        }
        .section-bg-dark .section-header h2 { color: var(--text-white); }
        .section-bg-dark .section-header h2::after { background: var(--accent); }
        .section-bg-dark .section-header p { color: rgba(255,255,255,0.7); }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--header-height);
            z-index: 1000;
            background: rgba(255,255,255,0.88);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(10,30,60,0.06);
            transition: var(--transition);
        }
        .site-header.scrolled {
            box-shadow: 0 4px 24px rgba(10,30,60,0.08);
            background: rgba(255,255,255,0.96);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .logo {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 10px;
            letter-spacing: 0.5px;
        }
        .logo i {
            color: var(--accent);
            font-size: 1.6rem;
        }
        .logo span {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-list a {
            padding: 8px 20px;
            border-radius: 50px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
            position: relative;
        }
        .nav-list a:hover {
            color: var(--primary);
            background: rgba(10,30,60,0.05);
        }
        .nav-list a.active {
            color: var(--text-white);
            background: var(--primary);
            box-shadow: 0 4px 16px rgba(10,30,60,0.18);
        }
        .nav-list a.active i { color: var(--accent); }
        .nav-list a i { margin-right: 6px; font-size: 0.85rem; }
        .nav-cta {
            background: var(--accent) !important;
            color: var(--primary) !important;
            padding: 8px 24px !important;
            border-radius: 50px !important;
            font-weight: 600 !important;
            box-shadow: 0 4px 16px rgba(201,168,76,0.30);
        }
        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(201,168,76,0.40) !important;
            background: var(--accent-light) !important;
        }
        .nav-toggle {
            display: none;
            background: none;
            font-size: 1.6rem;
            color: var(--primary);
            cursor: pointer;
            padding: 6px 10px;
            border-radius: 8px;
            transition: var(--transition);
        }
        .nav-toggle:hover { background: rgba(10,30,60,0.05); }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 600px;
            display: flex;
            align-items: center;
            overflow: hidden;
            background: var(--primary);
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.30;
            mix-blend-mode: overlay;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10,30,60,0.85) 0%, rgba(10,30,60,0.50) 60%, rgba(10,30,60,0.30) 100%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
            padding: 60px 0;
        }
        .hero-text h1 {
            font-size: 3.2rem;
            color: var(--text-white);
            line-height: 1.2;
            margin-bottom: 20px;
        }
        .hero-text h1 i {
            color: var(--accent);
        }
        .hero-text p {
            font-size: 1.15rem;
            color: rgba(255,255,255,0.80);
            max-width: 520px;
            margin-bottom: 32px;
            line-height: 1.7;
        }
        .hero-buttons {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .hero-buttons .btn-primary {
            background: var(--accent);
            color: var(--primary);
            padding: 14px 40px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1.05rem;
            box-shadow: 0 8px 28px rgba(201,168,76,0.35);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .hero-buttons .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(201,168,76,0.45);
            background: var(--accent-light);
        }
        .hero-buttons .btn-outline {
            background: transparent;
            color: var(--text-white);
            border: 2px solid rgba(255,255,255,0.30);
            padding: 12px 36px;
            border-radius: 50px;
            font-weight: 500;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .hero-buttons .btn-outline:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: rgba(201,168,76,0.08);
        }
        .hero-image {
            display: flex;
            justify-content: center;
            align-items: center;
            position: relative;
        }
        .hero-image img {
            max-width: 100%;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            transform: perspective(800px) rotateY(-6deg);
            transition: var(--transition);
        }
        .hero-image img:hover {
            transform: perspective(800px) rotateY(0deg);
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(201,168,76,0.15);
            border: 1px solid rgba(201,168,76,0.25);
            padding: 6px 18px;
            border-radius: 50px;
            color: var(--accent);
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 20px;
        }

        /* ===== 平台简介 ===== */
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }
        .intro-image img {
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            width: 100%;
        }
        .intro-text h3 {
            font-size: 1.8rem;
            color: var(--primary);
            margin-bottom: 16px;
        }
        .intro-text p {
            color: var(--text-secondary);
            margin-bottom: 16px;
            font-size: 1.02rem;
        }
        .intro-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
            margin-top: 24px;
        }
        .intro-feature-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 16px;
            background: var(--bg-body);
            border-radius: var(--radius-md);
            border-left: 3px solid var(--accent);
            font-weight: 500;
            font-size: 0.95rem;
        }
        .intro-feature-item i {
            color: var(--accent);
            font-size: 1.1rem;
        }

        /* ===== 分类入口 ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .category-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border-color);
            display: block;
        }
        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: var(--accent);
        }
        .category-card .card-img {
            height: 180px;
            overflow: hidden;
            position: relative;
        }
        .category-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .category-card:hover .card-img img {
            transform: scale(1.06);
        }
        .category-card .card-img .overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(0deg, rgba(10,30,60,0.50) 0%, transparent 60%);
        }
        .category-card .card-body {
            padding: 24px 28px 28px;
        }
        .category-card .card-body h3 {
            font-size: 1.2rem;
            color: var(--primary);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .category-card .card-body h3 i {
            color: var(--accent);
        }
        .category-card .card-body p {
            color: var(--text-secondary);
            font-size: 0.92rem;
            margin-bottom: 4px;
        }
        .category-card .card-tag {
            display: inline-block;
            padding: 4px 14px;
            background: rgba(201,168,76,0.12);
            color: var(--accent-dark);
            border-radius: 50px;
            font-size: 0.78rem;
            font-weight: 500;
            margin-top: 12px;
        }

        /* ===== 数据统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
        }
        .stat-card {
            text-align: center;
            padding: 36px 20px;
            background: rgba(255,255,255,0.06);
            border-radius: var(--radius-md);
            border: 1px solid rgba(255,255,255,0.08);
            backdrop-filter: blur(4px);
            transition: var(--transition);
        }
        .stat-card:hover {
            background: rgba(255,255,255,0.10);
            border-color: var(--accent);
            transform: translateY(-4px);
        }
        .stat-card .stat-number {
            font-size: 2.6rem;
            font-weight: 700;
            color: var(--accent);
            line-height: 1.2;
        }
        .stat-card .stat-label {
            font-size: 0.95rem;
            color: rgba(255,255,255,0.75);
            margin-top: 8px;
        }
        .stat-card i {
            font-size: 2rem;
            color: rgba(201,168,76,0.40);
            margin-bottom: 12px;
        }

        /* ===== 最新资讯 (CMS) ===== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .news-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: var(--accent);
        }
        .news-card .news-img {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        .news-card .news-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .news-card:hover .news-img img {
            transform: scale(1.06);
        }
        .news-card .news-img .news-cat {
            position: absolute;
            top: 14px;
            left: 14px;
            padding: 4px 14px;
            background: var(--accent);
            color: var(--primary);
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
        }
        .news-card .news-body {
            padding: 22px 24px 26px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .news-card .news-body h3 {
            font-size: 1.08rem;
            color: var(--primary);
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            line-height: 1.5;
        }
        .news-card .news-body p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            margin-bottom: 12px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }
        .news-card .news-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 14px;
            border-top: 1px solid var(--border-color);
            font-size: 0.82rem;
            color: var(--text-light);
        }
        .news-card .news-meta i { margin-right: 4px; }
        .news-card .news-meta a {
            color: var(--accent-dark);
            font-weight: 500;
        }
        .news-card .news-meta a:hover { color: var(--primary); }
        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 60px 20px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px dashed var(--border-color);
            color: var(--text-secondary);
            font-size: 1.05rem;
        }
        .news-empty i {
            font-size: 2.4rem;
            color: var(--text-light);
            margin-bottom: 16px;
            display: block;
        }

        /* ===== 服务流程 ===== */
        .flow-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }
        .flow-grid::before {
            content: '';
            position: absolute;
            top: 60px;
            left: 12%;
            right: 12%;
            height: 2px;
            background: linear-gradient(90deg, var(--accent), var(--accent), transparent);
            opacity: 0.30;
        }
        .flow-step {
            text-align: center;
            padding: 32px 16px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            position: relative;
            z-index: 1;
            transition: var(--transition);
        }
        .flow-step:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--accent);
        }
        .flow-step .step-number {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            font-weight: 700;
            margin: 0 auto 16px;
            border: 2px solid var(--accent);
        }
        .flow-step h4 {
            font-size: 1.05rem;
            color: var(--primary);
            margin-bottom: 8px;
        }
        .flow-step p {
            font-size: 0.88rem;
            color: var(--text-secondary);
        }

        /* ===== 平台优势 ===== */
        .advantage-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .advantage-card {
            display: flex;
            gap: 20px;
            padding: 28px 32px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .advantage-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--accent);
        }
        .advantage-card .adv-icon {
            flex-shrink: 0;
            width: 56px;
            height: 56px;
            border-radius: var(--radius-md);
            background: rgba(201,168,76,0.10);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--accent);
        }
        .advantage-card .adv-text h4 {
            font-size: 1.08rem;
            color: var(--primary);
            margin-bottom: 6px;
        }
        .advantage-card .adv-text p {
            font-size: 0.9rem;
            color: var(--text-secondary);
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--accent);
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            padding: 20px 28px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            font-weight: 500;
            font-size: 1.02rem;
            color: var(--primary);
            transition: var(--transition);
            background: transparent;
            width: 100%;
            text-align: left;
        }
        .faq-question:hover {
            color: var(--accent-dark);
        }
        .faq-question i {
            color: var(--accent);
            transition: var(--transition);
            font-size: 1.1rem;
        }
        .faq-question.open i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.3s ease;
            padding: 0 28px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-answer.open {
            max-height: 300px;
            padding: 0 28px 22px;
        }

        /* ===== CTA ===== */
        .cta-section {
            text-align: center;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            padding: 80px 24px;
            border-radius: var(--radius-lg);
            margin: 0 24px;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .cta-content {
            position: relative;
            z-index: 1;
        }
        .cta-content h2 {
            font-size: 2.2rem;
            color: var(--text-white);
            margin-bottom: 16px;
        }
        .cta-content p {
            font-size: 1.1rem;
            color: rgba(255,255,255,0.75);
            max-width: 560px;
            margin: 0 auto 32px;
        }
        .cta-content .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            background: var(--accent);
            color: var(--primary);
            padding: 16px 48px;
            border-radius: 50px;
            font-size: 1.1rem;
            font-weight: 600;
            box-shadow: 0 8px 32px rgba(201,168,76,0.35);
            transition: var(--transition);
        }
        .cta-content .btn-cta:hover {
            transform: translateY(-3px);
            box-shadow: 0 14px 48px rgba(201,168,76,0.45);
            background: var(--accent-light);
        }
        .cta-content .btn-cta i {
            font-size: 1.2rem;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255,255,255,0.70);
            padding: 56px 0 32px;
            margin-top: 80px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255,255,255,0.06);
        }
        .footer-brand .logo {
            color: var(--text-white);
            margin-bottom: 12px;
        }
        .footer-brand .logo span {
            -webkit-text-fill-color: var(--text-white);
            background: none;
        }
        .footer-brand p {
            font-size: 0.9rem;
            max-width: 300px;
            line-height: 1.7;
            color: rgba(255,255,255,0.55);
        }
        .footer-col h4 {
            color: var(--text-white);
            font-size: 1rem;
            margin-bottom: 16px;
            font-weight: 600;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            font-size: 0.9rem;
            color: rgba(255,255,255,0.55);
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-col ul li a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-col ul li a i {
            font-size: 0.75rem;
            color: var(--accent);
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 24px;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.40);
        }
        .footer-bottom a {
            color: rgba(255,255,255,0.50);
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }
        .footer-social {
            display: flex;
            gap: 14px;
        }
        .footer-social a {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255,255,255,0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255,255,255,0.50);
            transition: var(--transition);
        }
        .footer-social a:hover {
            background: var(--accent);
            color: var(--primary);
            transform: translateY(-2px);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .hero-content { grid-template-columns: 1fr; gap: 40px; text-align: center; }
            .hero-text p { margin: 0 auto 32px; }
            .hero-buttons { justify-content: center; }
            .hero-image { display: none; }
            .intro-grid { grid-template-columns: 1fr; }
            .category-grid { grid-template-columns: repeat(2, 1fr); }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .news-grid { grid-template-columns: repeat(2, 1fr); }
            .flow-grid { grid-template-columns: repeat(2, 1fr); }
            .flow-grid::before { display: none; }
            .advantage-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .cta-section { margin: 0 16px; border-radius: var(--radius-md); }
        }

        @media (max-width: 768px) {
            :root { --header-height: 64px; }
            h1 { font-size: 2rem; }
            h2 { font-size: 1.6rem; }
            .section { padding: 56px 0; }
            .section-header { margin-bottom: 36px; }

            .nav-list {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(255,255,255,0.98);
                backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 16px 24px 28px;
                gap: 4px;
                box-shadow: 0 20px 40px rgba(10,30,60,0.12);
                transform: translateY(-120%);
                opacity: 0;
                transition: var(--transition);
                border-bottom: 1px solid var(--border-color);
                border-radius: 0 0 var(--radius-lg) var(--radius-lg);
                pointer-events: none;
            }
            .nav-list.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: all;
            }
            .nav-list a {
                padding: 12px 20px;
                width: 100%;
                border-radius: var(--radius-sm);
            }
            .nav-list a.nav-cta {
                margin-top: 8px;
                text-align: center;
            }
            .nav-toggle { display: block; }

            .hero { min-height: 480px; }
            .hero-text h1 { font-size: 2.2rem; }
            .hero-buttons .btn-primary,
            .hero-buttons .btn-outline { padding: 12px 28px; font-size: 0.95rem; }

            .category-grid { grid-template-columns: 1fr; }
            .news-grid { grid-template-columns: 1fr; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
            .stat-card { padding: 24px 16px; }
            .stat-card .stat-number { font-size: 2rem; }
            .flow-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
            .flow-step { padding: 24px 12px; }
            .advantage-card { flex-direction: column; padding: 22px; }
            .faq-question { padding: 16px 20px; font-size: 0.95rem; }
            .faq-answer { padding: 0 20px; }
            .faq-answer.open { padding: 0 20px 18px; }
            .cta-section { padding: 56px 20px; }
            .cta-content h2 { font-size: 1.6rem; }
            .cta-content .btn-cta { padding: 14px 32px; font-size: 1rem; }
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
            .intro-features { grid-template-columns: 1fr; }
        }

        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .hero-text h1 { font-size: 1.7rem; }
            .hero-buttons { flex-direction: column; align-items: center; }
            .hero-buttons .btn-primary,
            .hero-buttons .btn-outline { width: 100%; justify-content: center; }
            .stats-grid { grid-template-columns: 1fr 1fr; }
            .flow-grid { grid-template-columns: 1fr; }
            .news-card .news-img { height: 160px; }
            .category-card .card-img { height: 150px; }
            .cta-section { padding: 40px 16px; margin: 0 8px; }
            .section-header h2 { font-size: 1.4rem; }
        }

        /* ===== 工具类 ===== */
        .text-center { text-align: center; }
        .mt-16 { margin-top: 16px; }
        .mt-24 { margin-top: 24px; }
        .mt-32 { margin-top: 32px; }
        .gap-8 { gap: 8px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }

        /* 滚动条美化 */
        ::-webkit-scrollbar { width: 6px; }
        ::-webkit-scrollbar-track { background: var(--bg-body); }
        ::-webkit-scrollbar-thumb { background: var(--text-light); border-radius: 3px; }
        ::-webkit-scrollbar-thumb:hover { background: var(--text-secondary); }

        /* 选中样式 */
        ::selection { background: var(--accent); color: var(--primary); }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0b2b5c;
            --primary-light: #1a4a7a;
            --primary-dark: #071a3a;
            --accent: #d4a843;
            --accent-light: #e8c76a;
            --accent-dark: #b8892e;
            --bg-body: #f5f7fc;
            --bg-card: #ffffff;
            --bg-dark: #0b1a30;
            --bg-soft: #eaf0f8;
            --text-dark: #0b1a2e;
            --text-main: #1e2f45;
            --text-muted: #5e6f85;
            --text-light: #a0b0c4;
            --text-white: #f0f4fc;
            --border: #dce3ed;
            --radius: 14px;
            --radius-sm: 8px;
            --radius-lg: 24px;
            --shadow: 0 6px 24px rgba(11, 43, 92, 0.08);
            --shadow-md: 0 12px 40px rgba(11, 43, 92, 0.12);
            --shadow-lg: 0 24px 60px rgba(11, 43, 92, 0.18);
            --transition: 0.3s cubic-bezier(0.22, 1, 0.36, 1);
            --font-sans: 'Segoe UI', system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --max-width: 1200px;
            --header-h: 72px;
        }

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

        /* ===== 容器 ===== */
        .container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
        @media (max-width: 768px) { .container { padding: 0 16px; } }

        /* ===== 头部导航 ===== */
        .site-header {
            position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
            background: rgba(255,255,255,0.88);
            backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(220,227,237,0.5);
            height: var(--header-h);
            transition: var(--transition);
        }
        .site-header.scrolled { background: rgba(255,255,255,0.96); box-shadow: var(--shadow); }
        .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: 22px; font-weight: 800; color: var(--primary); letter-spacing: -0.3px;
        }
        .logo i { font-size: 26px; color: var(--accent); }
        .logo span { background: linear-gradient(135deg, var(--primary), var(--primary-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
        .nav-toggle { display: none; font-size: 24px; color: var(--primary); padding: 6px 10px; border-radius: var(--radius-sm); }
        .nav-toggle:hover { background: var(--bg-soft); }
        .nav-list { display: flex; align-items: center; gap: 8px; }
        .nav-list a {
            display: flex; align-items: center; gap: 6px;
            padding: 8px 18px; border-radius: 100px;
            font-size: 15px; font-weight: 500; color: var(--text-main);
            transition: var(--transition); position: relative;
        }
        .nav-list a i { font-size: 14px; }
        .nav-list a:hover { background: var(--bg-soft); color: var(--primary); }
        .nav-list a.active { background: var(--primary); color: #fff; box-shadow: 0 4px 14px rgba(11,43,92,0.25); }
        .nav-list a.nav-cta { background: var(--accent); color: var(--primary-dark); font-weight: 600; }
        .nav-list a.nav-cta:hover { background: var(--accent-light); transform: translateY(-1px); box-shadow: 0 6px 20px rgba(212,168,67,0.35); }
        @media (max-width: 820px) {
            .nav-toggle { display: block; }
            .nav-list {
                position: fixed; top: var(--header-h); left: 0; right: 0;
                flex-direction: column; background: rgba(255,255,255,0.98);
                backdrop-filter: blur(16px); padding: 16px 24px 24px;
                border-bottom: 1px solid var(--border);
                transform: translateY(-120%); opacity: 0; pointer-events: none;
                transition: var(--transition); box-shadow: var(--shadow-md);
                border-radius: 0 0 var(--radius-lg) var(--radius-lg);
                gap: 4px;
            }
            .nav-list.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
            .nav-list a { width: 100%; justify-content: center; padding: 12px 18px; border-radius: var(--radius-sm); }
            .nav-list a.active { background: var(--primary); }
        }

        /* ===== 面包屑 ===== */
        .breadcrumb-bar {
            background: var(--bg-soft);
            padding: 14px 0;
            border-bottom: 1px solid var(--border);
        }
        .breadcrumb-bar .container { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; font-size: 14px; color: var(--text-muted); }
        .breadcrumb-bar a { color: var(--primary); }
        .breadcrumb-bar a:hover { color: var(--accent); }
        .breadcrumb-bar .sep { color: var(--text-light); margin: 0 4px; }

        /* ===== 文章主体 ===== */
        .article-main { padding: 48px 0 64px; }
        .article-wrapper {
            max-width: 860px; margin: 0 auto;
            background: var(--bg-card); border-radius: var(--radius-lg);
            box-shadow: var(--shadow); padding: 48px 56px;
            border: 1px solid var(--border);
        }
        .article-header { margin-bottom: 32px; padding-bottom: 28px; border-bottom: 1px solid var(--border); }
        .article-category {
            display: inline-flex; align-items: center; gap: 6px;
            background: var(--primary); color: #fff;
            padding: 4px 16px; border-radius: 100px;
            font-size: 13px; font-weight: 600; letter-spacing: 0.3px;
            margin-bottom: 16px;
        }
        .article-category i { font-size: 12px; }
        .article-title { font-size: 32px; line-height: 1.3; margin-bottom: 16px; color: var(--text-dark); }
        .article-meta {
            display: flex; align-items: center; gap: 20px;
            font-size: 14px; color: var(--text-muted); flex-wrap: wrap;
        }
        .article-meta i { margin-right: 4px; color: var(--accent); }
        .article-meta span { display: inline-flex; align-items: center; }

        .article-featured-image {
            margin: 28px 0 32px; border-radius: var(--radius);
            overflow: hidden; box-shadow: var(--shadow);
        }
        .article-featured-image img { width: 100%; height: auto; max-height: 480px; object-fit: cover; }

        .article-body { font-size: 17px; line-height: 1.9; color: var(--text-main); }
        .article-body p { margin-bottom: 1.4em; }
        .article-body h2 { font-size: 24px; margin-top: 1.8em; margin-bottom: 0.8em; padding-bottom: 8px; border-bottom: 2px solid var(--bg-soft); }
        .article-body h3 { font-size: 20px; margin-top: 1.4em; margin-bottom: 0.6em; }
        .article-body ul, .article-body ol { margin: 1em 0; padding-left: 24px; }
        .article-body li { margin-bottom: 0.5em; }
        .article-body ul li { list-style: disc; }
        .article-body ol li { list-style: decimal; }
        .article-body blockquote {
            border-left: 4px solid var(--accent);
            background: var(--bg-soft);
            padding: 16px 24px;
            margin: 1.4em 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-muted);
            font-style: italic;
        }
        .article-body strong { color: var(--text-dark); font-weight: 700; }
        .article-body a { color: var(--accent-dark); font-weight: 500; border-bottom: 1px solid transparent; }
        .article-body a:hover { border-bottom-color: var(--accent); }
        .article-body img { margin: 1.2em auto; border-radius: var(--radius); box-shadow: var(--shadow); }

        .article-tags {
            display: flex; flex-wrap: wrap; gap: 10px;
            margin-top: 36px; padding-top: 28px;
            border-top: 1px solid var(--border);
        }
        .article-tags span {
            display: inline-flex; align-items: center; gap: 6px;
            background: var(--bg-soft); color: var(--text-muted);
            padding: 6px 16px; border-radius: 100px;
            font-size: 13px; font-weight: 500;
        }
        .article-tags span i { color: var(--accent); font-size: 12px; }

        .article-nav {
            display: flex; justify-content: space-between; gap: 16px;
            margin-top: 40px; padding-top: 28px;
            border-top: 1px solid var(--border);
        }
        .article-nav a {
            display: inline-flex; align-items: center; gap: 8px;
            padding: 10px 22px; border-radius: 100px;
            background: var(--bg-soft); color: var(--text-main);
            font-size: 14px; font-weight: 500; transition: var(--transition);
        }
        .article-nav a:hover { background: var(--primary); color: #fff; transform: translateY(-2px); box-shadow: var(--shadow); }
        .article-nav a i { font-size: 14px; }

        .article-not-found {
            text-align: center; padding: 80px 24px;
        }
        .article-not-found i { font-size: 56px; color: var(--text-light); margin-bottom: 24px; }
        .article-not-found h2 { font-size: 28px; margin-bottom: 16px; }
        .article-not-found p { color: var(--text-muted); margin-bottom: 28px; }
        .article-not-found a { display: inline-flex; align-items: center; gap: 8px; padding: 12px 32px; background: var(--primary); color: #fff; border-radius: 100px; font-weight: 600; }
        .article-not-found a:hover { background: var(--primary-light); transform: translateY(-2px); box-shadow: var(--shadow-md); }

        /* ===== 相关推荐 ===== */
        .related-section { background: var(--bg-body); padding: 48px 0 64px; border-top: 1px solid var(--border); }
        .related-section .section-title { text-align: center; font-size: 28px; margin-bottom: 32px; }
        .related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
        .related-card {
            background: var(--bg-card); border-radius: var(--radius);
            overflow: hidden; box-shadow: var(--shadow);
            transition: var(--transition); border: 1px solid var(--border);
        }
        .related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .related-card img { width: 100%; height: 180px; object-fit: cover; }
        .related-card-body { padding: 18px 20px 22px; }
        .related-card-body h3 { font-size: 16px; margin-bottom: 8px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .related-card-body h3 a { color: var(--text-dark); }
        .related-card-body h3 a:hover { color: var(--accent); }
        .related-card-body .meta { font-size: 13px; color: var(--text-muted); display: flex; align-items: center; gap: 12px; }
        .related-card-body .meta i { color: var(--accent); font-size: 12px; margin-right: 2px; }

        @media (max-width: 900px) {
            .article-wrapper { padding: 32px 28px; }
            .related-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 640px) {
            .article-wrapper { padding: 24px 18px; border-radius: var(--radius); }
            .article-title { font-size: 22px; }
            .article-body { font-size: 16px; }
            .related-grid { grid-template-columns: 1fr; }
            .article-nav { flex-direction: column; align-items: stretch; }
            .article-nav a { justify-content: center; }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark); color: var(--text-white);
            padding: 56px 0 32px; border-top: 3px solid var(--accent);
        }
        .site-footer .container { max-width: var(--max-width); }
        .footer-grid { display: grid; grid-template-columns: 1.8fr 1fr 1fr 1.2fr; gap: 40px; margin-bottom: 36px; }
        .footer-brand .logo { color: #fff; margin-bottom: 16px; }
        .footer-brand .logo i { color: var(--accent); }
        .footer-brand .logo span { -webkit-text-fill-color: #fff; background: none; }
        .footer-brand p { color: var(--text-light); font-size: 14px; line-height: 1.8; max-width: 320px; }
        .footer-social { display: flex; gap: 14px; }
        .footer-social a {
            display: flex; align-items: center; justify-content: center;
            width: 40px; height: 40px; border-radius: 50%;
            background: rgba(255,255,255,0.06); color: var(--text-light);
            font-size: 18px; transition: var(--transition);
        }
        .footer-social a:hover { background: var(--accent); color: var(--primary-dark); transform: translateY(-2px); }
        .footer-col h4 { color: #fff; font-size: 16px; margin-bottom: 18px; letter-spacing: 0.5px; }
        .footer-col ul li { margin-bottom: 10px; }
        .footer-col ul li a { color: var(--text-light); font-size: 14px; display: inline-flex; align-items: center; gap: 6px; transition: var(--transition); }
        .footer-col ul li a i { font-size: 10px; color: var(--accent); }
        .footer-col ul li a:hover { color: var(--accent); transform: translateX(4px); }
        .footer-bottom { border-top: 1px solid rgba(255,255,255,0.06); padding-top: 24px; text-align: center; font-size: 13px; color: var(--text-light); }
        .footer-bottom a { color: var(--text-light); }
        .footer-bottom a:hover { color: var(--accent); }
        @media (max-width: 768px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
            .footer-brand { grid-column: 1 / -1; }
        }
        @media (max-width: 520px) {
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
        }

        /* ===== 通用工具 ===== */
        .text-center { text-align: center; }
        .mt-16 { margin-top: 16px; }
        .mb-16 { margin-bottom: 16px; }
        .sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }

        /* ===== 骨架屏 ===== */
        .skeleton { background: linear-gradient(90deg, var(--border) 25%, var(--bg-soft) 50%, var(--border) 75%); background-size: 200% 100%; animation: shimmer 1.5s infinite; border-radius: var(--radius-sm); }
        @keyframes shimmer { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }

        /* ===== 打印 ===== */
        @media print {
            .site-header, .site-footer, .article-nav, .related-section, .breadcrumb-bar { display: none; }
            body { padding-top: 0; background: #fff; }
            .article-wrapper { box-shadow: none; border: none; padding: 0; }
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a3a5c;
            --primary-light: #2c5f8a;
            --primary-dark: #0f2440;
            --accent: #e8a838;
            --accent-light: #f0c060;
            --accent-dark: #c48a20;
            --bg-body: #f5f7fb;
            --bg-white: #ffffff;
            --bg-section: #f0f3f8;
            --bg-dark: #0f2440;
            --text-dark: #1a2a3a;
            --text-body: #3a4a5a;
            --text-light: #7a8a9a;
            --text-white: #f0f4f8;
            --border: #dce2ec;
            --border-light: #e8edf4;
            --shadow-sm: 0 2px 8px rgba(26, 58, 92, 0.06);
            --shadow-md: 0 8px 30px rgba(26, 58, 92, 0.10);
            --shadow-lg: 0 20px 60px rgba(26, 58, 92, 0.14);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --transition: 0.30s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
            --container: 1200px;
            --header-h: 72px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-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;
            padding-top: var(--header-h);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover,
        a:focus-visible {
            color: var(--accent-dark);
        }
        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
        }
        input,
        textarea,
        select {
            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: clamp(2rem, 5vw, 3.2rem);
        }
        h2 {
            font-size: clamp(1.6rem, 3.5vw, 2.4rem);
            margin-bottom: 16px;
        }
        h3 {
            font-size: clamp(1.2rem, 2vw, 1.6rem);
        }
        h4 {
            font-size: 1.1rem;
        }
        p {
            margin-bottom: 16px;
        }
        :focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
            border-radius: 4px;
        }
        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header / 悬浮胶囊导航 ===== */
        .site-header {
            position: fixed;
            top: 16px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 1000;
            width: calc(100% - 32px);
            max-width: var(--container);
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-radius: 60px;
            box-shadow: 0 4px 30px rgba(26, 58, 92, 0.10);
            border: 1px solid rgba(255, 255, 255, 0.5);
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .site-header:hover {
            box-shadow: 0 8px 40px rgba(26, 58, 92, 0.14);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 24px;
            height: var(--header-h);
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.5px;
            transition: opacity var(--transition);
        }
        .logo i {
            font-size: 1.6rem;
            color: var(--accent);
        }
        .logo:hover {
            opacity: 0.85;
            color: var(--primary);
        }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-list a {
            padding: 8px 18px;
            border-radius: 40px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-body);
            transition: background var(--transition), color var(--transition), transform var(--transition);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-list a i {
            font-size: 0.9rem;
        }
        .nav-list a:hover,
        .nav-list a:focus-visible {
            background: rgba(26, 58, 92, 0.06);
            color: var(--primary);
            transform: translateY(-1px);
        }
        .nav-list a.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(26, 58, 92, 0.20);
        }
        .nav-list a.active:hover {
            background: var(--primary-light);
        }
        .nav-list a.nav-cta {
            background: var(--accent);
            color: var(--primary-dark);
            font-weight: 600;
            padding: 8px 22px;
            box-shadow: 0 4px 14px rgba(232, 168, 56, 0.30);
        }
        .nav-list a.nav-cta:hover {
            background: var(--accent-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(232, 168, 56, 0.35);
        }
        .nav-toggle {
            display: none;
            font-size: 1.5rem;
            color: var(--primary);
            padding: 8px 12px;
            border-radius: 40px;
            background: rgba(26, 58, 92, 0.04);
        }
        .nav-toggle:hover {
            background: rgba(26, 58, 92, 0.08);
        }
        @media (max-width: 820px) {
            .nav-toggle {
                display: block;
            }
            .nav-list {
                position: fixed;
                top: calc(var(--header-h) + 24px);
                left: 16px;
                right: 16px;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(18px);
                -webkit-backdrop-filter: blur(18px);
                border-radius: 24px;
                flex-direction: column;
                padding: 16px;
                gap: 4px;
                box-shadow: 0 20px 60px rgba(26, 58, 92, 0.18);
                border: 1px solid var(--border-light);
                display: none;
                opacity: 0;
                transform: translateY(-10px);
                transition: opacity 0.3s, transform 0.3s;
            }
            .nav-list.open {
                display: flex;
                opacity: 1;
                transform: translateY(0);
            }
            .nav-list a {
                width: 100%;
                justify-content: center;
                padding: 12px 18px;
                font-size: 1rem;
                border-radius: 40px;
            }
            .nav-list a.nav-cta {
                margin-top: 4px;
            }
            .site-header {
                top: 12px;
                width: calc(100% - 24px);
                border-radius: 40px;
            }
            .header-inner {
                padding: 0 16px;
                height: 64px;
            }
            .logo {
                font-size: 1.1rem;
            }
            .logo i {
                font-size: 1.3rem;
            }
            body {
                padding-top: 76px;
            }
        }
        @media (max-width: 480px) {
            .site-header {
                top: 8px;
                width: calc(100% - 16px);
                border-radius: 32px;
            }
            .header-inner {
                height: 58px;
                padding: 0 12px;
            }
            .logo {
                font-size: 1rem;
                gap: 6px;
            }
            .logo i {
                font-size: 1.1rem;
            }
            body {
                padding-top: 66px;
            }
        }

        /* ===== Hero / Banner ===== */
        .page-hero {
            position: relative;
            padding: 80px 0 100px;
            background: var(--primary-dark);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            display: flex;
            align-items: center;
            min-height: 360px;
            isolation: isolate;
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 36, 64, 0.88) 0%, rgba(26, 58, 92, 0.72) 100%);
            z-index: 1;
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .page-hero h1 {
            color: #fff;
            font-weight: 800;
            letter-spacing: 1px;
            margin-bottom: 16px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.20);
        }
        .page-hero p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 1.15rem;
            max-width: 680px;
            margin: 0 auto 28px;
            line-height: 1.8;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(232, 168, 56, 0.20);
            border: 1px solid rgba(232, 168, 56, 0.30);
            padding: 6px 20px;
            border-radius: 40px;
            color: var(--accent-light);
            font-size: 0.9rem;
            font-weight: 500;
            margin-bottom: 20px;
            backdrop-filter: blur(4px);
        }
        .hero-badge i {
            font-size: 0.85rem;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 34px;
            border-radius: 60px;
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition);
            border: none;
            cursor: pointer;
            line-height: 1.2;
        }
        .btn-primary {
            background: var(--accent);
            color: var(--primary-dark);
            box-shadow: 0 6px 24px rgba(232, 168, 56, 0.30);
        }
        .btn-primary:hover,
        .btn-primary:focus-visible {
            background: var(--accent-light);
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(232, 168, 56, 0.35);
            color: var(--primary-dark);
        }
        .btn-outline-light {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.40);
        }
        .btn-outline-light:hover,
        .btn-outline-light:focus-visible {
            background: rgba(255, 255, 255, 0.10);
            border-color: #fff;
            transform: translateY(-3px);
            color: #fff;
        }
        .btn-lg {
            padding: 16px 42px;
            font-size: 1.1rem;
        }
        @media (max-width: 768px) {
            .page-hero {
                padding: 60px 0 80px;
                min-height: 300px;
            }
            .page-hero p {
                font-size: 1rem;
            }
            .btn-lg {
                padding: 14px 32px;
                font-size: 1rem;
            }
        }
        @media (max-width: 480px) {
            .page-hero {
                padding: 40px 0 60px;
                min-height: 260px;
            }
            .page-hero h1 {
                font-size: 1.8rem;
            }
            .hero-actions {
                flex-direction: column;
                align-items: center;
            }
            .btn {
                width: 100%;
                max-width: 280px;
                justify-content: center;
            }
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--bg-section);
        }
        .section-white {
            background: var(--bg-white);
        }
        .section-dark {
            background: var(--bg-dark);
            color: var(--text-white);
        }
        .section-dark h2,
        .section-dark h3,
        .section-dark h4 {
            color: #fff;
        }
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 {
            margin-bottom: 12px;
        }
        .section-title p {
            color: var(--text-light);
            max-width: 600px;
            margin: 0 auto;
            font-size: 1.05rem;
        }
        .section-title .title-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(232, 168, 56, 0.12);
            color: var(--accent-dark);
            padding: 4px 16px;
            border-radius: 40px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }
        @media (max-width: 768px) {
            .section {
                padding: 56px 0;
            }
            .section-title {
                margin-bottom: 32px;
            }
        }

        /* ===== 卡片网格 ===== */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 32px 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
        }
        .card .card-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            margin-bottom: 18px;
            background: rgba(26, 58, 92, 0.06);
            color: var(--primary);
            transition: background var(--transition), color var(--transition);
        }
        .card:hover .card-icon {
            background: var(--primary);
            color: #fff;
        }
        .card h3 {
            margin-bottom: 10px;
        }
        .card p {
            color: var(--text-light);
            font-size: 0.95rem;
            margin-bottom: 0;
        }
        .card .card-tag {
            display: inline-block;
            background: rgba(232, 168, 56, 0.10);
            color: var(--accent-dark);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 2px 14px;
            border-radius: 40px;
            margin-bottom: 12px;
        }
        @media (max-width: 1024px) {
            .grid-3 {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .grid-3,
            .grid-2 {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .card {
                padding: 24px 20px;
            }
        }

        /* ===== 步骤 / 流程 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .step-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            position: relative;
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .step-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .step-card::before {
            counter-increment: step;
            content: counter(step);
            position: absolute;
            top: 16px;
            right: 20px;
            font-size: 2.8rem;
            font-weight: 800;
            color: rgba(26, 58, 92, 0.06);
            line-height: 1;
        }
        .step-card .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: 1.2rem;
            margin-bottom: 16px;
        }
        .step-card h4 {
            margin-bottom: 8px;
        }
        .step-card p {
            color: var(--text-light);
            font-size: 0.92rem;
            margin-bottom: 0;
        }
        @media (max-width: 1024px) {
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .step-card {
                padding: 24px 18px;
            }
        }

        /* ===== 图文区块 ===== */
        .feature-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .feature-row.reverse {
            direction: rtl;
        }
        .feature-row.reverse>* {
            direction: ltr;
        }
        .feature-image img {
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-md);
            width: 100%;
            height: auto;
            object-fit: cover;
            aspect-ratio: 16/10;
        }
        .feature-content h3 {
            margin-bottom: 12px;
        }
        .feature-content p {
            color: var(--text-light);
            margin-bottom: 16px;
        }
        .feature-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 0.98rem;
            color: var(--text-body);
        }
        .feature-list li i {
            color: var(--accent);
            margin-top: 4px;
            font-size: 0.9rem;
        }
        @media (max-width: 860px) {
            .feature-row {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .feature-row.reverse {
                direction: ltr;
            }
            .feature-image img {
                aspect-ratio: 16/9;
            }
        }

        /* ===== 内容列表 / 资讯 ===== */
        .content-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .content-item {
            display: flex;
            gap: 24px;
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: transform var(--transition), box-shadow var(--transition);
            align-items: flex-start;
        }
        .content-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
        }
        .content-item .item-thumb {
            width: 160px;
            min-height: 100px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            flex-shrink: 0;
            background: var(--bg-section);
        }
        .content-item .item-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            aspect-ratio: 16/10;
        }
        .content-item .item-body {
            flex: 1;
        }
        .content-item .item-body h4 {
            margin-bottom: 6px;
            font-size: 1.1rem;
        }
        .content-item .item-body h4 a {
            color: var(--text-dark);
        }
        .content-item .item-body h4 a:hover {
            color: var(--primary-light);
        }
        .content-item .item-body p {
            color: var(--text-light);
            font-size: 0.92rem;
            margin-bottom: 8px;
        }
        .item-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 0.82rem;
            color: var(--text-light);
        }
        .item-meta span {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .item-meta .badge {
            background: rgba(232, 168, 56, 0.12);
            color: var(--accent-dark);
            padding: 2px 12px;
            border-radius: 40px;
            font-weight: 600;
        }
        @media (max-width: 720px) {
            .content-item {
                flex-direction: column;
                padding: 16px;
            }
            .content-item .item-thumb {
                width: 100%;
                min-height: 160px;
            }
        }

        /* ===== 统计数据 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-card {
            text-align: center;
            padding: 32px 16px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: transform var(--transition), background var(--transition);
        }
        .stat-card:hover {
            transform: translateY(-4px);
            background: rgba(255, 255, 255, 0.10);
        }
        .stat-card .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
            margin-bottom: 4px;
        }
        .stat-card .stat-label {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.75);
        }
        @media (max-width: 820px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-card .stat-number {
                font-size: 2rem;
            }
        }
        @media (max-width: 480px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-card {
                padding: 20px 12px;
            }
        }

        /* ===== FAQ ===== */
        .faq-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            padding: 20px 24px;
            transition: box-shadow var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }
        .faq-item h4 {
            font-size: 1rem;
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .faq-item h4 i {
            color: var(--accent);
            font-size: 0.9rem;
        }
        .faq-item p {
            color: var(--text-light);
            font-size: 0.92rem;
            margin-bottom: 0;
            padding-left: 24px;
        }
        @media (max-width: 768px) {
            .faq-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .faq-item {
                padding: 16px 18px;
            }
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--primary);
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            padding: 80px 0;
            text-align: center;
            position: relative;
            isolation: isolate;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 36, 64, 0.88) 0%, rgba(26, 58, 92, 0.80) 100%);
            z-index: 1;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.80);
            max-width: 560px;
            margin: 0 auto 28px;
            font-size: 1.05rem;
        }
        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        .cta-actions .btn-primary {
            background: var(--accent);
            color: var(--primary-dark);
        }
        .cta-actions .btn-outline-light {
            border-color: rgba(255, 255, 255, 0.50);
        }
        @media (max-width: 480px) {
            .cta-section {
                padding: 56px 0;
            }
            .cta-actions {
                flex-direction: column;
                align-items: center;
            }
            .cta-actions .btn {
                width: 100%;
                max-width: 280px;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.70);
            padding: 60px 0 0;
        }
        .site-footer .container {
            padding: 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .footer-brand .logo {
            color: #fff;
            font-size: 1.2rem;
            margin-bottom: 12px;
            display: inline-flex;
        }
        .footer-brand .logo i {
            color: var(--accent);
        }
        .footer-brand p {
            font-size: 0.92rem;
            color: rgba(255, 255, 255, 0.55);
            max-width: 320px;
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: rgba(255, 255, 255, 0.60);
            font-size: 1.1rem;
            transition: background var(--transition), color var(--transition), transform var(--transition);
        }
        .footer-social a:hover {
            background: var(--accent);
            color: var(--primary-dark);
            transform: translateY(-3px);
        }
        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            margin-bottom: 18px;
            letter-spacing: 0.5px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.92rem;
            display: flex;
            align-items: center;
            gap: 6px;
            transition: color var(--transition), padding-left var(--transition);
        }
        .footer-col ul li a i {
            font-size: 0.65rem;
            color: rgba(255, 255, 255, 0.25);
        }
        .footer-col ul li a:hover {
            color: var(--accent-light);
            padding-left: 4px;
        }
        .footer-bottom {
            text-align: center;
            padding: 24px 0;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.35);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.45);
        }
        .footer-bottom a:hover {
            color: var(--accent-light);
        }
        @media (max-width: 860px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .site-footer {
                padding: 40px 0 0;
            }
        }

        /* ===== 分隔线 ===== */
        .divider {
            height: 1px;
            background: var(--border-light);
            margin: 0;
            border: none;
        }
        .divider-dark {
            background: rgba(255, 255, 255, 0.06);
        }

        /* ===== 标签 ===== */
        .tag-group {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .tag {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            background: var(--bg-section);
            color: var(--text-body);
            padding: 6px 16px;
            border-radius: 40px;
            font-size: 0.85rem;
            font-weight: 500;
            transition: background var(--transition), color var(--transition);
            border: 1px solid var(--border-light);
        }
        .tag:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .tag i {
            font-size: 0.75rem;
        }

        /* ===== 面包屑 ===== */
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            align-items: center;
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.60);
            margin-bottom: 16px;
            justify-content: center;
        }
        .breadcrumb a {
            color: rgba(255, 255, 255, 0.70);
        }
        .breadcrumb a:hover {
            color: var(--accent-light);
        }
        .breadcrumb span {
            color: rgba(255, 255, 255, 0.40);
        }
        .breadcrumb .current {
            color: var(--accent-light);
        }

        /* ===== 动画 ===== */
        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .animate-in {
            animation: fadeUp 0.6s ease forwards;
        }
        .delay-1 {
            animation-delay: 0.1s;
        }
        .delay-2 {
            animation-delay: 0.2s;
        }
        .delay-3 {
            animation-delay: 0.3s;
        }
        .delay-4 {
            animation-delay: 0.4s;
        }

        /* ===== 响应式微调 ===== */
        @media (max-width: 1024px) {
            .container {
                padding: 0 20px;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 16px;
            }
            .section {
                padding: 40px 0;
            }
            .page-hero {
                padding: 40px 0 56px;
            }
        }