/* roulang page: index */
:root {
            --primary: #2E5BFF;
            --primary-dark: #1E46D6;
            --primary-light: #EEF3FF;
            --gold: #C9A227;
            --page-bg: #F4F6FA;
            --text-main: #1A2333;
            --text-secondary: #667085;
            --border-color: #E5E9F0;
            --success: #10B981;
            --warning: #F59E0B;
            --radius-card: 12px;
            --radius-control: 8px;
            --shadow-card: 0 2px 8px rgba(26, 35, 51, 0.06);
            --shadow-hover: 0 8px 24px rgba(26, 35, 51, 0.10);
            --nav-shadow: 0 4px 16px rgba(26, 35, 51, 0.08);
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-main);
            background-color: var(--page-bg);
            -webkit-font-smoothing: antialiased;
        }

        .container-site {
            max-width: 1280px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ---------- 导航 ---------- */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: #ffffff;
            border-bottom: 1px solid var(--border-color);
            box-shadow: var(--nav-shadow);
        }

        .search-box {
            border-radius: 9999px;
            height: 44px;
            background: #fff;
            border: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            padding: 0 6px 0 16px;
            transition: border-color .2s ease-out, box-shadow .2s ease-out;
            width: 100%;
        }

        .search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(46, 91, 255, 0.10);
        }

        .search-box input {
            flex: 1;
            border: none;
            outline: none;
            background: transparent;
            font-size: 14px;
            color: var(--text-main);
            min-width: 0;
        }

        .search-box input::placeholder {
            color: #9AA4B5;
        }

        .search-box .search-btn {
            height: 32px;
            padding: 0 16px;
            border-radius: 9999px;
            background: var(--primary);
            color: #fff;
            font-size: 13px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: background .2s ease-out;
            white-space: nowrap;
        }

        .search-box .search-btn:hover {
            background: var(--primary-dark);
        }

        .nav-link {
            color: #334155;
            font-size: 15px;
            font-weight: 500;
            padding: 8px 4px;
            position: relative;
            transition: color .2s ease-out;
            text-decoration: none;
            white-space: nowrap;
        }

        .nav-link:hover {
            color: var(--primary);
        }

        .nav-link:hover::after,
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }

        .nav-link.active {
            color: var(--primary);
            font-weight: 700;
        }

        .logo-text {
            font-size: 22px;
            font-weight: 800;
            color: var(--text-main);
            text-decoration: none;
            line-height: 1.3;
            letter-spacing: -0.5px;
            white-space: nowrap;
        }

        .logo-text span.pc {
            color: var(--primary);
        }

        /* ---------- 按钮 ---------- */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 48px;
            padding: 0 32px;
            border-radius: 10px;
            background: var(--primary);
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: background .2s ease-out, transform .2s ease-out, box-shadow .2s ease-out;
            text-decoration: none;
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(46, 91, 255, 0.25);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 48px;
            padding: 0 32px;
            border-radius: 10px;
            background: #fff;
            color: var(--primary);
            font-size: 16px;
            font-weight: 600;
            border: 1px solid var(--primary);
            cursor: pointer;
            transition: background .2s ease-out, transform .2s ease-out;
            text-decoration: none;
        }

        .btn-secondary:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
        }

        .btn-white {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 48px;
            padding: 0 32px;
            border-radius: 10px;
            background: #fff;
            color: var(--primary);
            font-size: 16px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: transform .2s ease-out, box-shadow .2s ease-out;
            text-decoration: none;
        }

        .btn-white:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
        }

        /* ---------- Hero ---------- */
        .hero-section {
            position: relative;
            min-height: 560px;
            display: flex;
            align-items: center;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: rgba(255, 255, 255, 0.86);
        }

        .hero-grid-texture {
            position: absolute;
            inset: 0;
            background-image: linear-gradient(rgba(46, 91, 255, 0.03) 1px, transparent 1px),
                linear-gradient(90deg, rgba(46, 91, 255, 0.03) 1px, transparent 1px);
            background-size: 32px 32px;
        }

        /* ---------- 卡片 ---------- */
        .card {
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            transition: transform .2s ease-out, box-shadow .2s ease-out;
        }

        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        /* ---------- 时间线 ---------- */
        .timeline-item {
            position: relative;
            padding-left: 44px;
            padding-bottom: 28px;
        }

        .timeline-item::before {
            content: '';
            position: absolute;
            left: 14px;
            top: 28px;
            width: 2px;
            height: calc(100% - 20px);
            background: var(--primary);
        }

        .timeline-item:last-child::before {
            display: none;
        }

        .timeline-dot {
            position: absolute;
            left: 7px;
            top: 8px;
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background: var(--primary);
            border: 2px solid #fff;
            box-shadow: 0 0 0 2px var(--primary);
        }

        .timeline-dot.highlight {
            box-shadow: 0 0 0 4px rgba(201, 162, 39, 0.35);
        }

        .timeline-num {
            font-family: 'SF Mono', 'Cascadia Code', Consolas, monospace;
            font-size: 18px;
            font-weight: 700;
            color: var(--gold);
            letter-spacing: 1px;
        }

        /* ---------- 标签 ---------- */
        .badge-tag {
            display: inline-block;
            padding: 2px 10px;
            border-radius: 6px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 12px;
            font-weight: 500;
            line-height: 1.6;
        }

        .badge-gold {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 4px;
            background: var(--gold);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            position: absolute;
            top: -12px;
            left: 16px;
            z-index: 2;
        }

        /* ---------- FAQ ---------- */
        .faq-item {
            border-bottom: 1px solid var(--border-color);
        }

        .faq-item:first-child {
            border-top: 1px solid var(--border-color);
        }

        .faq-question {
            min-height: 52px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            padding: 8px 0;
            transition: color .2s ease-out;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
        }

        .faq-question:hover,
        .faq-question.active {
            color: var(--primary);
        }

        .faq-icon {
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 18px;
            line-height: 1;
            transition: transform .3s ease-out;
            flex-shrink: 0;
            margin-left: 12px;
        }

        .faq-icon.active {
            transform: rotate(45deg);
        }

        .faq-answer {
            padding: 0 24px 16px 0;
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-secondary);
            display: none;
        }

        .faq-answer.open {
            display: block;
        }

        /* ---------- 页脚 ---------- */
        .site-footer {
            background: #141A26;
            color: rgba(255, 255, 255, 0.7);
        }

        .site-footer a {
            color: rgba(255, 255, 255, 0.7);
            transition: color .2s ease-out;
            text-decoration: none;
        }

        .site-footer a:hover {
            color: #fff;
        }

        .footer-title {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 16px;
        }

        /* ---------- 空状态 ---------- */
        .empty-state {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            padding: 60px 24px;
            text-align: center;
            color: var(--text-secondary);
            background: #fff;
            border-radius: var(--radius-card);
            border: 1px dashed var(--border-color);
        }

        /* ---------- 表单 ---------- */
        .form-input {
            height: 44px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            padding: 0 14px;
            font-size: 14px;
            color: var(--text-main);
            background: #fff;
            transition: border-color .2s ease-out, box-shadow .2s ease-out;
            width: 100%;
            outline: none;
        }

        .form-input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(46, 91, 255, 0.10);
        }

        .form-textarea {
            border-radius: 8px;
            border: 1px solid var(--border-color);
            padding: 10px 14px;
            font-size: 14px;
            color: var(--text-main);
            background: #fff;
            transition: border-color .2s ease-out, box-shadow .2s ease-out;
            width: 100%;
            outline: none;
            font-family: inherit;
            resize: vertical;
        }

        .form-textarea:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(46, 91, 255, 0.10);
        }

        /* ---------- 响应式 ---------- */
        @media (max-width: 1024px) {
            .container-site {
                padding-left: 24px;
                padding-right: 24px;
            }
            .hero-section {
                min-height: 480px;
            }
        }

        @media (max-width: 768px) {
            .container-site {
                padding-left: 16px;
                padding-right: 16px;
            }
            .hero-section {
                min-height: 420px;
            }
            .logo-text {
                font-size: 18px;
            }
        }

        @media (max-width: 640px) {
            .hero-section {
                min-height: 380px;
            }
            .timeline-item {
                padding-left: 36px;
            }
        }

/* roulang page: article */
:root {
            --color-primary: #2E5BFF;
            --color-primary-hover: #1E46D6;
            --color-primary-light: #EEF3FF;
            --color-gold: #C9A227;
            --color-bg: #F4F6FA;
            --color-card: #FFFFFF;
            --color-text: #1A2333;
            --color-text-sub: #667085;
            --color-border: #E5E9F0;
            --color-success: #10B981;
            --color-warning: #F59E0B;
            --radius-card: 12px;
            --shadow-card: 0 2px 8px rgba(26, 35, 51, 0.06);
            --shadow-hover: 0 8px 24px rgba(26, 35, 51, 0.10);
            --transition: 150ms ease-out;
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: var(--color-bg);
            color: var(--color-text);
            font-size: 16px;
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }
        a { color: inherit; text-decoration: none; }
        img { max-width: 100%; display: block; }
        button { cursor: pointer; }

        .container-site {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--color-border);
            box-shadow: 0 4px 16px rgba(26, 35, 51, 0.08);
        }
        .logo-text {
            font-size: 22px;
            font-weight: 700;
            color: var(--color-text);
            letter-spacing: -0.5px;
            white-space: nowrap;
            display: inline-flex;
            align-items: center;
        }
        .logo-text .pc {
            color: var(--color-primary);
            font-weight: 800;
            margin: 0 4px;
        }
        .search-box {
            display: flex;
            align-items: center;
            height: 44px;
            background: #fff;
            border: 1px solid var(--color-border);
            border-radius: 9999px;
            padding: 0 6px 0 18px;
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .search-box:focus-within {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 4px rgba(46, 91, 255, 0.12);
        }
        .search-box input {
            flex: 1;
            border: none;
            outline: none;
            font-size: 14px;
            color: var(--color-text);
            background: transparent;
            min-width: 0;
        }
        .search-box input::placeholder {
            color: #9AA4B5;
        }
        .search-btn {
            height: 34px;
            padding: 0 18px;
            background: var(--color-primary);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            border: none;
            border-radius: 9999px;
            transition: background var(--transition), transform var(--transition);
        }
        .search-btn:hover {
            background: var(--color-primary-hover);
            transform: translateY(-1px);
        }
        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: #334155;
            padding: 8px 4px;
            position: relative;
            transition: color var(--transition);
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--color-primary);
        }
        .nav-link:hover::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 100%;
            height: 2px;
            background: var(--color-primary);
            border-radius: 2px;
        }
        .nav-link.active {
            color: var(--color-primary);
            font-weight: 700;
        }
        .nav-link.active::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 100%;
            height: 2px;
            background: var(--color-primary);
            border-radius: 2px;
        }
        .mobile-drawer {
            position: fixed;
            top: 64px;
            left: 0;
            right: 0;
            background: #fff;
            border-bottom: 1px solid var(--color-border);
            box-shadow: 0 12px 24px rgba(26, 35, 51, 0.08);
            padding: 16px 24px;
            display: none;
            z-index: 100;
        }
        .mobile-drawer.open { display: block; }
        .mobile-drawer a {
            display: block;
            padding: 14px 0;
            font-size: 16px;
            font-weight: 500;
            color: var(--color-text);
            border-bottom: 1px solid #f1f3f7;
            transition: color var(--transition);
        }
        .mobile-drawer a:hover { color: var(--color-primary); }
        .mobile-drawer a.active { color: var(--color-primary); font-weight: 700; }

        /* ===== 面包屑 ===== */
        .breadcrumb {
            font-size: 14px;
            color: var(--color-text-sub);
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 24px;
        }
        .breadcrumb a {
            color: var(--color-text-sub);
            transition: color var(--transition);
        }
        .breadcrumb a:hover { color: var(--color-primary); }
        .breadcrumb .sep { color: #c3c9d4; }
        .breadcrumb .current {
            color: var(--color-text);
            font-weight: 500;
            max-width: 320px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        /* ===== 文章主体 ===== */
        .article-wrap {
            max-width: 820px;
            margin: 0 auto;
        }
        .article-title {
            font-size: 36px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--color-text);
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }
        .article-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
            padding-bottom: 24px;
            border-bottom: 1px solid var(--color-border);
            margin-bottom: 36px;
            font-size: 14px;
            color: var(--color-text-sub);
        }
        .article-meta-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .article-content {
            max-width: 760px;
            margin: 0 auto;
            font-size: 16px;
            line-height: 1.8;
            color: var(--color-text);
        }
        .article-content p {
            margin-bottom: 24px;
        }
        .article-content h2 {
            font-size: 24px;
            font-weight: 700;
            margin: 40px 0 16px;
            color: var(--color-text);
            padding-left: 14px;
            border-left: 4px solid var(--color-primary);
        }
        .article-content h3 {
            font-size: 20px;
            font-weight: 600;
            margin: 32px 0 12px;
        }
        .article-content ul,
        .article-content ol {
            padding-left: 24px;
            margin-bottom: 24px;
        }
        .article-content ul li,
        .article-content ol li {
            margin-bottom: 10px;
        }
        .article-content img {
            border-radius: 12px;
            box-shadow: var(--shadow-hover);
            margin: 28px 0;
            height: auto;
        }
        .article-content blockquote {
            border-left: 4px solid var(--color-primary);
            background: #F8FAFC;
            padding: 16px 24px;
            margin: 28px 0;
            border-radius: 0 8px 8px 0;
            color: var(--color-text-sub);
        }
        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 28px 0;
            font-size: 15px;
            overflow-x: auto;
            display: block;
            border: 1px solid var(--color-border);
            border-radius: 8px;
        }
        .article-content table thead {
            background: var(--color-primary-light);
        }
        .article-content table th {
            padding: 12px 16px;
            text-align: left;
            font-weight: 600;
            border-bottom: 1px solid var(--color-border);
            color: var(--color-text);
        }
        .article-content table td {
            padding: 12px 16px;
            border-bottom: 1px solid var(--color-border);
            color: var(--color-text-sub);
        }
        .article-content table tr:last-child td {
            border-bottom: none;
        }
        .article-content a {
            color: var(--color-primary);
            text-decoration: underline;
            text-underline-offset: 3px;
            text-decoration-color: rgba(46, 91, 255, 0.3);
            transition: text-decoration-color var(--transition);
        }
        .article-content a:hover {
            text-decoration-color: var(--color-primary);
        }

        /* ===== 标签 ===== */
        .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 36px;
            padding-top: 24px;
            border-top: 1px solid var(--color-border);
        }
        .tag-pill {
            display: inline-flex;
            align-items: center;
            font-size: 13px;
            padding: 6px 14px;
            background: var(--color-primary-light);
            color: var(--color-primary);
            border-radius: 9999px;
            font-weight: 500;
            transition: background var(--transition), transform var(--transition);
        }
        .tag-pill:hover {
            background: var(--color-primary);
            color: #fff;
            transform: translateY(-1px);
        }

        /* ===== 相关推荐 ===== */
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 24px;
        }
        .related-card {
            background: var(--color-card);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .related-card img {
            width: 100%;
            height: 150px;
            object-fit: cover;
        }
        .related-card-body {
            padding: 16px;
        }
        .related-card-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text);
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 8px;
            transition: color var(--transition);
        }
        .related-card:hover .related-card-title {
            color: var(--color-primary);
        }
        .related-card-date {
            font-size: 13px;
            color: var(--color-text-sub);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #141A26;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 80px;
        }
        .site-footer a {
            color: rgba(255, 255, 255, 0.7);
            transition: color var(--transition);
        }
        .site-footer a:hover { color: #fff; }
        .footer-title {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 24px;
            margin-top: 40px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
            text-align: center;
        }

        /* ===== 按钮 ===== */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 44px;
            padding: 0 28px;
            background: var(--color-primary);
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            border: none;
            border-radius: 10px;
            transition: all var(--transition);
            cursor: pointer;
        }
        .btn-primary:hover {
            background: var(--color-primary-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(46, 91, 255, 0.25);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 44px;
            padding: 0 28px;
            background: #fff;
            color: var(--color-primary);
            font-size: 15px;
            font-weight: 600;
            border: 1px solid var(--color-primary);
            border-radius: 10px;
            transition: all var(--transition);
            cursor: pointer;
        }
        .btn-outline:hover {
            background: var(--color-primary-light);
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(46, 91, 255, 0.12);
        }

        /* ===== 内容未找到 ===== */
        .not-found-box {
            text-align: center;
            padding: 80px 24px;
            background: #fff;
            border-radius: 16px;
            box-shadow: var(--shadow-card);
            max-width: 600px;
            margin: 40px auto;
        }
        .not-found-box .icon-circle {
            width: 72px;
            height: 72px;
            border-radius: 50%;
            background: var(--color-primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
        }

        /* ===== 返回栏目卡 ===== */
        .back-category {
            margin-top: 40px;
            background: linear-gradient(135deg, var(--color-primary-light), #f0f5ff);
            border-radius: var(--radius-card);
            padding: 24px 32px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
        }
        .back-category-text {
            font-size: 15px;
            color: var(--color-text);
            font-weight: 500;
        }
        .back-category-text span {
            color: var(--color-primary);
            font-weight: 600;
        }

        /* ===== CTA 区块 ===== */
        .article-cta {
            background: #141A26;
            border-radius: 16px;
            padding: 48px;
            margin-top: 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .article-cta::before {
            content: "";
            position: absolute;
            top: -40px;
            right: -40px;
            width: 160px;
            height: 160px;
            border-radius: 50%;
            background: rgba(46, 91, 255, 0.15);
        }
        .article-cta h3 {
            font-size: 26px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .article-cta p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 24px;
        }

        @media (max-width: 1023px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .article-title {
                font-size: 30px;
            }
        }
        @media (max-width: 767px) {
            .container-site {
                padding: 0 16px;
            }
            .article-title {
                font-size: 26px;
            }
            .article-meta {
                gap: 12px 16px;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .article-cta {
                padding: 32px 20px;
            }
            .article-cta h3 {
                font-size: 22px;
            }
        }
        @media (max-width: 640px) {
            .container-site {
                padding: 0 16px;
            }
            .search-box {
                height: 40px;
            }
            .search-btn {
                height: 30px;
                padding: 0 14px;
                font-size: 13px;
            }
            .article-content table {
                font-size: 13px;
            }
            .article-content table th,
            .article-content table td {
                padding: 8px 10px;
                white-space: nowrap;
            }
            .back-category {
                padding: 20px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #2E5BFF;
            --primary-dark: #1E46D6;
            --primary-light: #EEF3FF;
            --accent-gold: #C9A227;
            --page-bg: #F4F6FA;
            --text-main: #1A2333;
            --text-secondary: #667085;
            --border-color: #E5E9F0;
            --success: #10B981;
            --warning: #F59E0B;
            --card-radius: 12px;
            --card-shadow: 0 2px 8px rgba(26, 35, 51, 0.06);
            --card-shadow-hover: 0 8px 24px rgba(26, 35, 51, 0.10);
            --header-shadow: 0 4px 16px rgba(26, 35, 51, 0.08);
            --transition: 150ms ease-out;
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: var(--page-bg);
            color: var(--text-main);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            font-size: 16px;
        }

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

        a {
            text-decoration: none;
            color: inherit;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        .container-site {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

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

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: #ffffff;
            border-bottom: 1px solid var(--border-color);
            box-shadow: var(--header-shadow);
        }

        .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: -0.01em;
            white-space: nowrap;
            line-height: 1.3;
        }

        .logo-text .pc {
            color: var(--primary);
        }

        .search-box {
            display: flex;
            align-items: center;
            height: 44px;
            background: #fff;
            border: 1px solid var(--border-color);
            border-radius: 9999px;
            padding: 0 16px;
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        .search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(46, 91, 255, 0.10);
        }

        .search-box input {
            flex: 1;
            border: none;
            outline: none;
            font-size: 14px;
            color: var(--text-main);
            background: transparent;
            min-width: 0;
        }

        .search-box input::placeholder {
            color: #9AA4B5;
        }

        .search-btn {
            display: inline-flex;
            align-items: center;
            height: 32px;
            padding: 0 18px;
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 9999px;
            font-size: 13px;
            font-weight: 600;
            transition: background var(--transition), transform var(--transition);
            white-space: nowrap;
        }

        .search-btn:hover {
            background: var(--primary-dark);
        }

        .search-btn:active {
            transform: scale(0.97);
        }

        .nav-link {
            font-size: 14px;
            font-weight: 500;
            color: #334155;
            padding: 6px 2px;
            position: relative;
            transition: color var(--transition);
            white-space: nowrap;
        }

        .nav-link:hover {
            color: var(--primary);
        }

        .nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: -2px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }

        /* ===== Banner ===== */
        .page-banner {
            position: relative;
            overflow: hidden;
            padding: 96px 0;
            background-color: #fff;
            border-bottom: 1px solid var(--border-color);
        }

        .page-banner .bg-layer {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
        }

        .page-banner .overlay-layer {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(255, 255, 255, 0.96) 0%, rgba(238, 243, 255, 0.88) 100%);
        }

        .page-banner .grid-layer {
            position: absolute;
            inset: 0;
            background-image: linear-gradient(to right, rgba(46, 91, 255, 0.06) 1px, transparent 1px),
                linear-gradient(to bottom, rgba(46, 91, 255, 0.06) 1px, transparent 1px);
            background-size: 40px 40px;
        }

        .breadcrumb {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-secondary);
            background: rgba(255, 255, 255, 0.8);
            padding: 6px 16px;
            border-radius: 9999px;
            border: 1px solid var(--border-color);
            margin-bottom: 24px;
        }

        .breadcrumb a {
            transition: color var(--transition);
        }

        .breadcrumb a:hover {
            color: var(--primary);
        }

        .breadcrumb .sep {
            color: #CBD2DE;
        }

        /* ===== Content Blocks ===== */
        .content-block {
            background: #fff;
            border-radius: 20px;
            padding: 48px;
            box-shadow: var(--card-shadow);
            border: 1px solid rgba(229, 233, 240, 0.6);
            transition: box-shadow var(--transition);
        }

        .content-block:hover {
            box-shadow: var(--card-shadow-hover);
        }

        .content-img-wrap {
            border-radius: 16px;
            overflow: hidden;
            position: relative;
            box-shadow: 0 8px 24px rgba(26, 35, 51, 0.08);
        }

        .content-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            aspect-ratio: 4 / 3;
        }

        .content-img-wrap::after {
            content: '';
            position: absolute;
            inset: 0;
            border-radius: 16px;
            border: 1px solid rgba(255, 255, 255, 0.2);
            pointer-events: none;
        }

        .step-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-light);
            padding: 4px 14px;
            border-radius: 9999px;
            margin-bottom: 16px;
        }

        .step-badge .num {
            color: var(--accent-gold);
            font-weight: 700;
            font-variant-numeric: tabular-nums;
        }

        .content-block h2 {
            font-size: 26px;
            font-weight: 700;
            line-height: 1.35;
            margin-bottom: 16px;
            color: var(--text-main);
        }

        .content-block p.text-secondary {
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-secondary);
        }

        /* ===== Feature Card ===== */
        .feature-card {
            background: #fff;
            border-radius: var(--card-radius);
            padding: 28px 24px;
            box-shadow: var(--card-shadow);
            border: 1px solid var(--border-color);
            transition: transform var(--transition), box-shadow var(--transition);
        }

        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--card-shadow-hover);
        }

        .feature-card .icon-wrap {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            transition: background var(--transition), color var(--transition);
            margin-bottom: 16px;
        }

        .feature-card:hover .icon-wrap {
            background: var(--primary);
            color: #fff;
        }

        .feature-card h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text-main);
        }

        .feature-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ===== CTA Band ===== */
        .cta-band {
            background: linear-gradient(135deg, #2E5BFF 0%, #1E46D6 100%);
            border-radius: 20px;
            padding: 64px 48px;
            text-align: center;
        }

        .cta-band h2 {
            color: #fff;
            font-size: 30px;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .cta-band p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 16px;
            margin-bottom: 32px;
        }

        .btn-white {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 46px;
            padding: 0 32px;
            background: #fff;
            color: var(--primary) !important;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 600;
            transition: all var(--transition);
        }

        .btn-white:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
        }

        .btn-outline-white {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 46px;
            padding: 0 32px;
            background: transparent;
            color: #fff !important;
            border: 1.5px solid rgba(255, 255, 255, 0.6);
            border-radius: 10px;
            font-size: 15px;
            font-weight: 600;
            transition: all var(--transition);
        }

        .btn-outline-white:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            transform: translateY(-2px);
        }

        /* ===== FAQ ===== */
        .faq-item {
            background: #fff;
            border-radius: 12px;
            box-shadow: var(--card-shadow);
            border: 1px solid var(--border-color);
            overflow: hidden;
            margin-bottom: 14px;
            transition: box-shadow var(--transition);
        }

        .faq-item:hover {
            box-shadow: var(--card-shadow-hover);
        }

        .faq-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            gap: 16px;
            transition: color var(--transition);
        }

        .faq-header:hover {
            color: var(--primary);
        }

        .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 500;
            transition: transform 200ms ease, background var(--transition), color var(--transition);
            flex-shrink: 0;
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: var(--primary);
            color: #fff;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 200ms ease-out;
            padding: 0 24px;
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-secondary);
        }

        .faq-answer.show {
            max-height: 400px;
            padding: 0 24px 20px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background-color: #141A26;
            color: rgba(255, 255, 255, 0.7);
        }

        .site-footer a {
            color: rgba(255, 255, 255, 0.7);
            transition: color var(--transition);
        }

        .site-footer a:hover {
            color: #fff;
        }

        .footer-title {
            font-size: 15px;
            font-weight: 600;
            color: #ffffff;
            margin-bottom: 16px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            margin-top: 48px;
            padding-top: 24px;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }

        /* ===== Misc ===== */
        .section-space {
            padding: 80px 0;
        }

        .section-title {
            font-size: 30px;
            font-weight: 700;
            text-align: center;
            margin-bottom: 12px;
            color: var(--text-main);
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            text-align: center;
            max-width: 600px;
            margin: 0 auto 48px;
            line-height: 1.7;
        }

        .divider-dot {
            width: 4px;
            height: 4px;
            border-radius: 50%;
            background: #CBD2DE;
            display: inline-block;
            margin: 0 10px;
            vertical-align: middle;
        }

        @media (max-width: 640px) {
            .section-space {
                padding: 56px 0;
            }
            .section-title {
                font-size: 24px;
            }
            .content-block {
                padding: 28px 20px;
            }
            .cta-band {
                padding: 40px 24px;
            }
            .page-banner {
                padding: 64px 0;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #2E5BFF;
            --primary-hover: #1E46D6;
            --primary-light: #EEF3FF;
            --gold: #C9A227;
            --text-main: #1A2333;
            --text-sub: #667085;
            --border: #E5E9F0;
            --page: #F4F6FA;
            --white: #FFFFFF;
            --radius-card: 12px;
            --radius-control: 8px;
            --shadow-card: 0 2px 8px rgba(26, 35, 51, 0.06);
            --shadow-hover: 0 8px 24px rgba(26, 35, 51, 0.10);
            --transition: 200ms ease-out;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: system-ui, -apple-system, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
            background-color: var(--page);
            color: var(--text-main);
            line-height: 1.6;
            margin: 0;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: inherit;
            text-decoration: none;
        }

        button {
            font-family: inherit;
        }

        .container-site {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: #fff;
            border-bottom: 1px solid var(--border);
            box-shadow: 0 4px 16px rgba(26, 35, 51, 0.06);
        }

        .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-main);
            white-space: nowrap;
            letter-spacing: -0.01em;
        }

        .logo-text .logo-accent {
            color: var(--primary);
        }

        .search-box {
            display: flex;
            align-items: center;
            height: 44px;
            padding: 0 4px 0 16px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 9999px;
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        .search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(46, 91, 255, 0.10);
        }

        .search-box input {
            flex: 1;
            border: none;
            outline: none;
            font-size: 14px;
            color: var(--text-main);
            background: transparent;
            min-width: 0;
        }

        .search-box input::placeholder {
            color: #9AA4B5;
        }

        .search-btn {
            height: 36px;
            padding: 0 20px;
            border-radius: 9999px;
            background: var(--primary);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: background var(--transition);
            white-space: nowrap;
        }

        .search-btn:hover {
            background: var(--primary-hover);
        }

        .search-btn:focus {
            outline: none;
            box-shadow: 0 0 0 4px rgba(46, 91, 255, 0.20);
        }

        .nav-link {
            font-size: 14px;
            font-weight: 500;
            color: #334155;
            padding: 8px 2px;
            position: relative;
            transition: color var(--transition);
            white-space: nowrap;
        }

        .nav-link:hover {
            color: var(--primary);
        }

        .nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }

        .nav-link.active::after {
            content: "";
            position: absolute;
            left: 0;
            right: 0;
            bottom: 0;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }

        .mobile-menu {
            display: none;
            flex-direction: column;
            gap: 4px;
            padding: 12px 0 16px;
            border-top: 1px solid var(--border);
        }

        .mobile-menu.open {
            display: flex;
        }

        .mobile-menu .nav-link {
            padding: 12px 4px;
            font-size: 15px;
        }

        /* Hero Banner */
        .hero-banner {
            position: relative;
            background-image: linear-gradient(90deg, rgba(244, 246, 250, 0.97) 0%, rgba(244, 246, 250, 0.86) 55%, rgba(244, 246, 250, 0.68) 100%), url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            overflow: hidden;
        }

        .hero-banner::before {
            content: "";
            position: absolute;
            inset: 0;
            background-image: linear-gradient(rgba(46, 91, 255, 0.03) 1px, transparent 1px), linear-gradient(90deg, rgba(46, 91, 255, 0.03) 1px, transparent 1px);
            background-size: 32px 32px;
            pointer-events: none;
        }

        .hero-banner .content {
            position: relative;
            z-index: 10;
            padding-top: 72px;
            padding-bottom: 72px;
        }

        /* Buttons */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 48px;
            padding: 0 32px;
            background: var(--primary);
            color: #fff;
            border-radius: 10px;
            font-weight: 600;
            font-size: 15px;
            border: none;
            cursor: pointer;
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
            white-space: nowrap;
        }

        .btn-primary:hover {
            background: var(--primary-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(46, 91, 255, 0.30);
        }

        .btn-primary:active {
            transform: translateY(0);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 48px;
            padding: 0 32px;
            background: #fff;
            color: var(--primary);
            border: 1.5px solid var(--primary);
            border-radius: 10px;
            font-weight: 600;
            font-size: 15px;
            cursor: pointer;
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
            white-space: nowrap;
        }

        .btn-secondary:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(46, 91, 255, 0.12);
        }

        .btn-secondary:active {
            transform: translateY(0);
        }

        /* Section Tag */
        .section-tag {
            display: inline-block;
            padding: 4px 14px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            border-radius: 9999px;
            margin-bottom: 12px;
        }

        /* Cards */
        .card-hover {
            transition: transform var(--transition), box-shadow var(--transition);
        }

        .card-hover:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        .badge-tag {
            display: inline-flex;
            align-items: center;
            padding: 2px 10px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 12px;
            border-radius: 6px;
            font-weight: 500;
        }

        /* Step Nums */
        .step-num {
            font-size: 36px;
            font-weight: 700;
            font-variant-numeric: tabular-nums;
            color: var(--gold);
            font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
            line-height: 1.2;
        }

        /* FAQ */
        .faq-item {
            border-bottom: 1px solid var(--border);
        }

        .faq-item:first-child {
            border-top: 1px solid var(--border);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            padding: 16px 24px;
            background: transparent;
            border: none;
            cursor: pointer;
            text-align: left;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            transition: color var(--transition);
        }

        .faq-question:hover {
            color: var(--primary);
        }

        .faq-item.active .faq-question {
            color: var(--primary);
        }

        .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 9999px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 600;
            flex-shrink: 0;
            transition: transform var(--transition), background var(--transition);
        }

        .faq-item.active .faq-icon {
            transform: rotate(45deg);
            background: var(--primary);
            color: #fff;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
        }

        .faq-answer-inner {
            padding: 0 24px 20px;
            color: var(--text-sub);
            font-size: 15px;
            line-height: 1.8;
        }

        /* CTA */
        .cta-section {
            background: linear-gradient(135deg, #1A2333 0%, #141A26 100%);
        }

        .cta-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 20px;
            padding: 64px 32px;
            text-align: center;
        }

        .cta-card h2 {
            color: #fff;
            font-size: 32px;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .cta-card p {
            color: rgba(255, 255, 255, 0.80);
            font-size: 16px;
            margin-bottom: 32px;
        }

        /* Footer */
        .site-footer {
            background: #141A26;
        }

        .footer-title {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 16px;
        }

        .site-footer ul li a {
            color: rgba(255, 255, 255, 0.70);
            transition: color var(--transition);
        }

        .site-footer ul li a:hover {
            color: #fff;
        }

        .site-footer ul li {
            color: rgba(255, 255, 255, 0.70);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.10);
            margin-top: 48px;
            padding-top: 24px;
            text-align: center;
            color: rgba(255, 255, 255, 0.50);
            font-size: 14px;
        }

        /* Responsive */
        @media (max-width: 640px) {
            .container-site {
                padding-left: 16px;
                padding-right: 16px;
            }

            .hero-banner .content {
                padding-top: 48px;
                padding-bottom: 48px;
            }

            .cta-card {
                padding: 40px 20px;
            }

            .cta-card h2 {
                font-size: 26px;
            }

            .btn-primary,
            .btn-secondary {
                height: 44px;
                padding: 0 24px;
                font-size: 14px;
            }
        }

/* roulang page: category3 */
/* ========== 设计变量 ========== */
        :root {
            --primary: #2E5BFF;
            --primary-dark: #1E46D6;
            --primary-light: #EEF3FF;
            --gold: #C9A227;
            --bg: #F4F6FA;
            --card-bg: #FFFFFF;
            --text-main: #1A2333;
            --text-sub: #667085;
            --border: #E5E9F0;
            --success: #10B981;
            --shadow-card: 0 2px 8px rgba(26, 35, 51, 0.06);
            --shadow-hover: 0 8px 24px rgba(26, 35, 51, 0.10);
            --radius-card: 12px;
            --radius-control: 8px;
            --radius-pill: 9999px;
            --transition: all 0.2s ease-out;
        }

        /* ========== Reset / Base ========== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            color: var(--text-main);
            background-color: var(--bg);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.2s ease-out;
        }
        ul {
            list-style: none;
        }
        button,
        input {
            font: inherit;
            border: none;
            outline: none;
            background: none;
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid rgba(46, 91, 255, 0.5);
            outline-offset: 2px;
        }

        /* ========== 容器 ========== */
        .container-site {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 640px) {
            .container-site {
                padding: 0 16px;
            }
        }

        /* ========== 导航 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 4px 16px rgba(26, 35, 51, 0.06);
        }
        .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: 0.4px;
            white-space: nowrap;
            line-height: 1.4;
        }
        .logo-text .pc {
            color: var(--primary);
            font-weight: 800;
        }
        .search-box {
            display: flex;
            align-items: center;
            height: 44px;
            padding: 0 6px 0 16px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-pill);
            transition: border-color 0.2s ease-out, box-shadow 0.2s ease-out;
        }
        .search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(46, 91, 255, 0.12);
        }
        .search-box input {
            flex: 1;
            min-width: 0;
            font-size: 14px;
            color: var(--text-main);
            padding: 8px 0;
            background: transparent;
        }
        .search-box input::placeholder {
            color: #9AA4B5;
        }
        .search-box input::-webkit-search-cancel-button {
            display: none;
        }
        .search-btn {
            height: 32px;
            padding: 0 18px;
            background: var(--primary);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            border-radius: var(--radius-pill);
            cursor: pointer;
            transition: background 0.2s ease-out;
        }
        .search-btn:hover {
            background: var(--primary-dark);
        }
        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: #334155;
            padding: 6px 2px;
            position: relative;
            transition: color 0.2s ease-out;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 100%;
            height: 2px;
            background: var(--primary);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.2s ease-out;
        }
        .nav-link:hover {
            color: var(--primary);
        }
        .nav-link:hover::after {
            transform: scaleX(1);
        }
        .nav-link.active {
            color: var(--primary);
            font-weight: 700;
        }
        .nav-link.active::after {
            transform: scaleX(1);
        }

        /* 移动端导航 */
        .mobile-nav-link {
            display: block;
            padding: 12px 8px;
            font-size: 15px;
            font-weight: 500;
            color: #334155;
            border-bottom: 1px solid #F0F3F8;
            transition: color 0.2s ease-out, padding-left 0.2s ease-out;
        }
        .mobile-nav-link:hover,
        .mobile-nav-link.active {
            color: var(--primary);
            padding-left: 12px;
        }

        /* ========== 分类 Banner ========== */
        .hero-category {
            position: relative;
            padding: 76px 0 68px;
            background-size: cover;
            background-position: center;
            background-color: #E8EDF5;
        }
        .hero-category::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(255, 255, 255, 0.94) 0%, rgba(255, 255, 255, 0.78) 50%, rgba(255, 255, 255, 0.36) 100%);
        }
        .hero-category .container-site {
            position: relative;
            z-index: 1;
        }
        .hero-category h1 {
            font-size: 40px;
            font-weight: 700;
            line-height: 1.3;
            margin: 12px 0 14px;
            color: var(--text-main);
            letter-spacing: -0.3px;
        }
        .hero-sub {
            font-size: 17px;
            color: #4A5668;
            line-height: 1.8;
            max-width: 560px;
        }
        .hero-trust {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 28px;
            font-size: 14px;
            color: var(--text-sub);
        }
        .hero-trust .dot {
            color: #B0B8C4;
        }
        @media (max-width: 768px) {
            .hero-category {
                padding: 48px 0 44px;
            }
            .hero-category h1 {
                font-size: 30px;
            }
        }

        /* 面包屑 */
        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            font-size: 14px;
            color: var(--text-sub);
            margin-bottom: 14px;
        }
        .breadcrumb a {
            color: var(--primary);
            transition: opacity 0.2s ease-out;
        }
        .breadcrumb a:hover {
            opacity: 0.75;
        }

        /* ========== 按钮 ========== */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 48px;
            padding: 0 32px;
            background: var(--primary);
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            border-radius: 10px;
            transition: background 0.2s ease-out, transform 0.2s ease-out, box-shadow 0.2s ease-out;
            cursor: pointer;
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(46, 91, 255, 0.30);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 48px;
            padding: 0 32px;
            background: #fff;
            color: var(--primary);
            font-size: 16px;
            font-weight: 600;
            border: 1px solid rgba(46, 91, 255, 0.35);
            border-radius: 10px;
            transition: background 0.2s ease-out, border-color 0.2s ease-out, transform 0.2s ease-out;
            cursor: pointer;
        }
        .btn-secondary:hover {
            background: var(--primary-light);
            border-color: var(--primary);
            transform: translateY(-2px);
        }

        /* ========== 板块标题 ========== */
        .section-title {
            font-size: 32px;
            font-weight: 700;
            text-align: center;
            margin-bottom: 12px;
            color: var(--text-main);
            letter-spacing: -0.4px;
        }
        .section-sub {
            text-align: center;
            font-size: 15px;
            color: var(--text-sub);
            margin-bottom: 44px;
        }
        @media (max-width: 640px) {
            .section-title {
                font-size: 26px;
            }
            .section-sub {
                margin-bottom: 28px;
            }
        }

        /* ========== 步骤卡片 ========== */
        .step-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 20px;
        }
        .step-card {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 26px 22px;
            border: 1px solid rgba(229, 233, 240, 0.6);
            box-shadow: var(--shadow-card);
            transition: transform 0.2s ease-out, box-shadow 0.2s ease-out, border-color 0.2s ease-out;
            position: relative;
        }
        .step-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(46, 91, 255, 0.25);
        }
        .step-num {
            font-size: 36px;
            font-weight: 700;
            color: var(--gold);
            font-variant-numeric: tabular-nums;
            line-height: 1;
            margin-bottom: 14px;
        }
        .step-card h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text-main);
        }
        .step-card p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.7;
        }
        @media (max-width: 1024px) {
            .step-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .step-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== 勾选清单 ========== */
        .check-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 10px 0;
            font-size: 15px;
            color: var(--text-main);
            line-height: 1.7;
        }
        .check-icon {
            flex-shrink: 0;
            width: 22px;
            height: 22px;
            margin-top: 4px;
            border-radius: 50%;
            background: rgba(16, 185, 129, 0.12);
            color: var(--success);
            display: flex;
            align-items: center;
            justify-content: center;
        }

        /* ========== 服务保障 ========== */
        .guarantee-card {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 28px 24px;
            border: 1px solid rgba(229, 233, 240, 0.6);
            box-shadow: var(--shadow-card);
            transition: transform 0.2s ease-out, box-shadow 0.2s ease-out;
        }
        .guarantee-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .guarantee-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
            transition: background 0.2s ease-out, color 0.2s ease-out;
        }
        .guarantee-card:hover .guarantee-icon {
            background: var(--primary);
            color: #fff;
        }
        .guarantee-card h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text-main);
        }
        .guarantee-card p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.7;
        }

        /* ========== FAQ ========== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: #fff;
            border-radius: var(--radius-card);
            border: 1px solid rgba(229, 233, 240, 0.6);
            overflow: hidden;
            transition: border-color 0.2s ease-out;
        }
        .faq-item.active {
            border-color: rgba(46, 91, 255, 0.30);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            color: var(--text-main);
            transition: color 0.2s ease-out;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-item.active .faq-question {
            color: var(--primary);
        }
        .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 18px;
            line-height: 24px;
            text-align: center;
            transition: transform 0.3s ease-out;
        }
        .faq-item.active .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            padding: 0 24px;
            font-size: 15px;
            color: var(--text-sub);
            line-height: 1.8;
            transition: max-height 0.35s ease-out, padding 0.35s ease-out;
        }
        .faq-item.active .faq-answer {
            max-height: 400px;
            padding: 0 24px 20px;
        }

        /* ========== CTA ========== */
        .cta-section {
            position: relative;
            background: linear-gradient(135deg, #161C2C 0%, #0F1420 100%);
            padding: 72px 0;
        }
        .cta-section h2 {
            color: #fff;
            font-size: 32px;
            font-weight: 700;
            text-align: center;
            margin-bottom: 12px;
        }
        .cta-sub {
            color: rgba(255, 255, 255, 0.78);
            text-align: center;
            font-size: 15px;
            margin-bottom: 32px;
        }
        .btn-white {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 48px;
            padding: 0 32px;
            background: #fff;
            color: var(--primary);
            font-size: 16px;
            font-weight: 600;
            border-radius: 10px;
            transition: background 0.2s ease-out, transform 0.2s ease-out, box-shadow 0.2s ease-out;
            cursor: pointer;
        }
        .btn-white:hover {
            background: #EFF4FF;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(255, 255, 255, 0.25);
        }
        .btn-outline-white {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 48px;
            padding: 0 32px;
            border: 1px solid rgba(255, 255, 255, 0.6);
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            border-radius: 10px;
            transition: background 0.2s ease-out, border-color 0.2s ease-out, transform 0.2s ease-out;
            cursor: pointer;
        }
        .btn-outline-white:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
            transform: translateY(-2px);
        }
        @media (max-width: 640px) {
            .cta-section {
                padding: 48px 0;
            }
            .cta-section h2 {
                font-size: 26px;
            }
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: #141A26;
            color: rgba(255, 255, 255, 0.70);
        }
        .site-footer a {
            color: rgba(255, 255, 255, 0.70);
            transition: color 0.2s ease-out;
        }
        .site-footer a:hover {
            color: #fff;
        }
        .footer-title {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }

        /* ========== 配色辅助 ========== */
        .text-primary {
            color: var(--primary);
        }
        .bg-primary {
            background-color: var(--primary);
        }
        .border-primary {
            border-color: var(--primary);
        }
        .bg-primary-light {
            background-color: var(--primary-light);
        }
        .text-gold {
            color: var(--gold);
        }