/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #16325c;
            --primary-light: #2a4373;
            --primary-dark: #0d1b33;
            --secondary: #d4a853;
            --secondary-light: #e6c87a;
            --secondary-dark: #b8913a;
            --accent: #e8813a;
            --bg-light: #f4f6f9;
            --bg-white: #ffffff;
            --bg-dark: #0b1526;
            --text-main: #1e2434;
            --text-body: #3d4760;
            --text-weak: #7e8aa5;
            --border: #e2e8f2;
            --radius-sm: 8px;
            --radius: 14px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 10px rgba(15, 30, 60, 0.06);
            --shadow: 0 8px 30px rgba(15, 30, 60, 0.10);
            --shadow-lg: 0 16px 48px rgba(15, 30, 60, 0.16);
            --space-1: 8px;
            --space-2: 16px;
            --space-3: 24px;
            --space-4: 40px;
            --space-5: 64px;
            --space-6: 96px;
        }

        /* ===== 基础 Reset ===== */
        *, *::before, *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            margin: 0;
            padding: 0;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-body);
            background: var(--bg-light);
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color .2s ease;
        }
        button, input, select, textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        /* ===== 容器 ===== */
        .grid-container {
            max-width: 1280px;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: var(--space-5) 0;
        }
        .section-head {
            text-align: center;
            max-width: 720px;
            margin: 0 auto var(--space-4);
        }
        .section-tag {
            display: inline-block;
            background: rgba(22, 50, 92, 0.08);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 1px;
            padding: 4px 16px;
            border-radius: 24px;
            text-transform: uppercase;
            margin-bottom: 12px;
        }
        .section-head h2 {
            font-size: 36px;
            line-height: 1.3;
            color: var(--text-main);
            font-weight: 700;
            margin: 0 0 12px;
        }
        .section-head p {
            font-size: 16px;
            color: var(--text-weak);
            margin: 0;
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 30px;
            border-radius: 50px;
            font-size: 15px;
            font-weight: 600;
            text-decoration: none;
            transition: all .25s ease;
            border: 2px solid transparent;
            cursor: pointer;
            gap: 8px;
            line-height: 1.5;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(22, 50, 92, 0.25);
        }
        .btn-primary:hover, .btn-primary:focus {
            background: var(--primary-light);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow);
            outline: none;
        }
        .btn-outline {
            background: transparent;
            color: #fff;
            border-color: rgba(255, 255, 255, 0.8);
        }
        .btn-outline:hover, .btn-outline:focus {
            background: rgba(255, 255, 255, 0.15);
            color: #fff;
            border-color: #fff;
            outline: none;
        }
        .btn-secondary {
            background: var(--secondary);
            color: var(--primary-dark);
        }
        .btn-secondary:hover, .btn-secondary:focus {
            background: var(--secondary-light);
            color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow);
            outline: none;
        }

        /* ===== 导航 ===== */
        .site-header {
            background: #fff;
            box-shadow: var(--shadow-sm);
            position: sticky;
            top: 0;
            z-index: 100;
        }
        .header-top {
            padding: 14px 0;
            border-bottom: 1px solid var(--border);
        }
        .header-top-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
        }
        .brand a {
            font-size: 22px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: 0.5px;
            line-height: 1.3;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .search-box {
            display: flex;
            align-items: center;
            background: var(--bg-light);
            border-radius: 40px;
            padding: 5px 6px 5px 18px;
            border: 1px solid var(--border);
            transition: all .25s;
        }
        .search-box:focus-within {
            box-shadow: 0 0 0 3px rgba(22, 50, 92, 0.1);
            border-color: var(--primary);
        }
        .search-box input {
            border: none;
            background: transparent;
            outline: none;
            font-size: 14px;
            width: 200px;
            color: var(--text-main);
        }
        .search-box input::placeholder {
            color: var(--text-weak);
        }
        .search-box button {
            border: none;
            background: var(--primary);
            color: #fff;
            width: 34px;
            height: 34px;
            border-radius: 50%;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: background .2s;
            font-size: 14px;
        }
        .search-box button:hover {
            background: var(--primary-light);
        }
        .header-login-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary);
            color: #fff;
            padding: 8px 20px;
            border-radius: 40px;
            font-size: 13px;
            font-weight: 600;
            transition: all .25s;
            border: 2px solid transparent;
        }
        .header-login-btn:hover {
            background: var(--primary-light);
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }
        .header-nav {
            background: #fff;
            border-bottom: 1px solid var(--border);
        }
        .nav-tabs {
            display: flex;
            gap: 8px;
            padding: 10px 0;
            overflow-x: auto;
            scrollbar-width: thin;
            scrollbar-color: var(--border) transparent;
            white-space: nowrap;
        }
        .nav-tabs::-webkit-scrollbar {
            height: 3px;
        }
        .nav-tabs::-webkit-scrollbar-track {
            background: transparent;
        }
        .nav-tabs::-webkit-scrollbar-thumb {
            background: var(--border);
            border-radius: 8px;
        }
        .nav-tabs a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 22px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-body);
            border-radius: 30px;
            background: var(--bg-light);
            text-decoration: none;
            transition: all .2s ease;
            flex-shrink: 0;
        }
        .nav-tabs a i {
            font-size: 13px;
        }
        .nav-tabs a:hover, .nav-tabs a:focus {
            background: var(--primary);
            color: #fff;
            outline: none;
            box-shadow: 0 4px 12px rgba(22, 50, 92, 0.25);
        }
        .nav-tabs a.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(22, 50, 92, 0.25);
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            padding: 110px 0 90px;
            overflow: hidden;
            color: #fff;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center center;
            z-index: -2;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(11, 21, 38, 0.92) 0%, rgba(22, 50, 92, 0.82) 45%, rgba(212, 168, 83, 0.45) 100%);
            z-index: -1;
        }
        .hero-inner {
            max-width: 700px;
            padding: 20px 0;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.18);
            border: 1px solid rgba(255, 255, 255, 0.35);
            backdrop-filter: blur(8px);
            padding: 6px 18px;
            border-radius: 40px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 1px;
            color: #fff;
            margin-bottom: 24px;
        }
        .hero-badge i {
            color: var(--secondary-light);
        }
        .hero-inner h1 {
            font-size: 52px;
            line-height: 1.15;
            font-weight: 800;
            margin: 0 0 18px;
            color: #fff;
            letter-spacing: 0.5px;
            text-shadow: 0 4px 24px rgba(0, 0, 0, 0.25);
        }
        .hero-inner p {
            font-size: 19px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.85);
            margin: 0 0 36px;
            max-width: 540px;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 56px;
        }
        .hero-stats {
            display: flex;
            gap: 28px;
            flex-wrap: wrap;
        }
        .hero-stats span {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.85);
            background: rgba(255, 255, 255, 0.10);
            padding: 6px 18px;
            border-radius: 30px;
            border: 1px solid rgba(255, 255, 255, 0.15);
        }
        .hero-stats i {
            color: var(--secondary-light);
        }

        /* ===== 核心说明 ===== */
        .about-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            overflow: hidden;
        }
        .about-card .card-img {
            height: 100%;
            min-height: 360px;
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .about-card .card-img::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 30%, rgba(11, 21, 38, 0.35));
        }
        .about-content {
            padding: 48px 40px;
        }
        .about-content h3 {
            font-size: 28px;
            color: var(--text-main);
            font-weight: 700;
            margin: 0 0 16px;
        }
        .about-content p {
            font-size: 15px;
            line-height: 1.75;
            color: var(--text-body);
            margin: 0 0 28px;
        }
        .feature-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 14px;
        }
        .feature-list li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 15px;
            color: var(--text-main);
            font-weight: 500;
            background: var(--bg-light);
            border-radius: var(--radius-sm);
            padding: 12px 16px;
            border-left: 3px solid var(--secondary);
        }
        .feature-list li i {
            color: var(--secondary-dark);
        }

        /* ===== 分类卡片 ===== */
        .category-section {
            background: var(--bg-white);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .category-card {
            display: flex;
            flex-direction: column;
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all .3s ease;
            height: 100%;
            text-decoration: none;
        }
        .category-card:hover, .category-card:focus {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: var(--secondary);
            outline: none;
        }
        .category-card-img {
            height: 200px;
            background-size: cover;
            background-position: center;
            position: relative;
            display: flex;
            align-items: flex-end;
            padding: 16px;
        }
        .category-card-img::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 50%, rgba(0, 0, 0, 0.4));
        }
        .category-card .badge {
            position: relative;
            z-index: 1;
            background: rgba(255, 255, 255, 0.9);
            color: var(--primary);
            font-size: 12px;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 20px;
            display: inline-block;
        }
        .category-body {
            padding: 24px 22px 26px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .category-body h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-main);
            margin: 0 0 8px;
        }
        .category-body p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.6;
            margin: 0 0 16px;
            flex: 1;
        }
        .category-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
        }
        .category-card:hover .category-more {
            color: var(--secondary-dark);
            gap: 12px;
        }
        .category-more i {
            transition: transform .2s;
        }

        /* ===== 平台优势 ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-bottom: 48px;
        }
        .feature-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 32px 24px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            text-align: center;
            transition: all .25s ease;
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow);
            border-color: var(--secondary);
        }
        .feature-card .icon-wrap {
            width: 58px;
            height: 58px;
            margin: 0 auto 18px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: var(--secondary-light);
            box-shadow: 0 6px 16px rgba(22, 50, 92, 0.2);
        }
        .feature-card h3 {
            font-size: 18px;
            color: var(--text-main);
            font-weight: 700;
            margin: 0 0 10px;
        }
        .feature-card p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.6;
            margin: 0;
        }
        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            background: var(--primary);
            border-radius: var(--radius-lg);
            padding: 36px 32px;
            background-image: linear-gradient(120deg, rgba(255,255,255,0.05) 0%, transparent 100%);
        }
        .stat-item {
            text-align: center;
            color: #fff;
            padding: 8px 12px;
            border-right: 1px solid rgba(255, 255, 255, 0.1);
        }
        .stat-item:last-child {
            border-right: none;
        }
        .stat-num {
            font-size: 36px;
            font-weight: 800;
            line-height: 1.2;
            color: var(--secondary-light);
            display: block;
        }
        .stat-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.8);
            margin-top: 6px;
            display: block;
        }

        /* ===== 内容列表 / CMS ===== */
        .news-section {
            background: var(--bg-white);
        }
        .news-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            height: 100%;
            transition: all .3s ease;
        }
        .news-card:hover, .news-card:focus-within {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: var(--secondary);
            outline: none;
        }
        .news-card-link {
            display: flex;
            flex-direction: column;
            height: 100%;
        }
        .news-thumb {
            height: 200px;
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .news-body {
            padding: 24px 22px 22px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .badge {
            display: inline-block;
            background: rgba(22, 50, 92, 0.08);
            color: var(--primary);
            padding: 3px 12px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
            margin-bottom: 12px;
            align-self: flex-start;
        }
        .news-body h3 {
            font-size: 18px;
            line-height: 1.5;
            color: var(--text-main);
            font-weight: 600;
            margin: 0 0 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-body p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.6;
            margin: 0 0 14px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }
        .news-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--text-weak);
        }
        .news-meta i {
            margin-right: 4px;
        }
        .empty-tip {
            text-align: center;
            padding: 60px 20px;
            color: var(--text-weak);
            font-size: 15px;
            background: var(--bg-light);
            border-radius: var(--radius);
        }

        /* ===== 使用流程 ===== */
        .process-step {
            position: relative;
            text-align: center;
            padding: 32px 20px;
            background: var(--bg-white);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            height: 100%;
            transition: all .25s;
        }
        .process-step:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow);
        }
        .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            background: var(--primary);
            color: var(--secondary-light);
            border-radius: 50%;
            font-size: 18px;
            font-weight: 800;
            margin-bottom: 18px;
            box-shadow: 0 4px 14px rgba(22, 50, 92, 0.3);
        }
        .process-step h3 {
            font-size: 18px;
            color: var(--text-main);
            font-weight: 700;
            margin: 0 0 10px;
        }
        .process-step p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.6;
            margin: 0;
        }
        .process-arrow {
            position: absolute;
            right: -16px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--secondary);
            font-size: 20px;
            z-index: 2;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-white);
        }
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 14px;
            overflow: hidden;
            transition: border-color .25s;
        }
        .faq-item:hover {
            border-color: var(--secondary);
        }
        .faq-item summary {
            list-style: none;
            cursor: pointer;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            transition: background .2s;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::after {
            content: "\f078";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            font-size: 13px;
            color: var(--secondary-dark);
            transition: transform .25s;
            flex-shrink: 0;
        }
        .faq-item[open] summary {
            color: var(--primary);
            border-bottom: 1px solid var(--border);
        }
        .faq-item[open] summary::after {
            transform: rotate(180deg);
        }
        .faq-item .faq-answer {
            padding: 16px 24px 20px;
        }
        .faq-item .faq-answer p {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
            margin: 0;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 80px 0;
            background: linear-gradient(120deg, var(--primary-dark) 0%, var(--primary) 100%);
            color: #fff;
            text-align: center;
        }
        .cta-box h2 {
            font-size: 38px;
            font-weight: 800;
            margin: 0 0 10px;
            color: #fff;
        }
        .cta-box p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.8);
            margin: 0 0 36px;
        }
        .cta-box .btn {
            font-size: 16px;
            padding: 14px 40px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 30px;
        }
        .footer-top {
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
            flex-wrap: wrap;
            gap: 24px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .footer-brand .brand-name {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
        }
        .footer-brand p {
            font-size: 14px;
            max-width: 360px;
            margin: 12px 0 0;
            line-height: 1.6;
            opacity: 0.65;
        }
        .footer-nav {
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
        }
        .footer-nav a {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.75);
            transition: color .2s;
        }
        .footer-nav a:hover {
            color: var(--secondary-light);
        }
        .footer-bottom {
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 14px;
            opacity: 0.55;
        }
        .footer-bottom p {
            margin: 0;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .hero-inner h1 {
                font-size: 42px;
            }
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .stat-item {
                border-right: none;
                border-bottom: 1px solid rgba(255, 255, 255, 0.1);
                padding: 10px;
            }
            .stat-item:nth-child(n+3) {
                border-bottom: none;
            }
        }
        @media (max-width: 768px) {
            .section {
                padding: 44px 0;
            }
            .section-head h2 {
                font-size: 28px;
            }
            .grid-container {
                padding-left: 18px;
                padding-right: 18px;
            }
            .header-top-inner {
                flex-direction: column;
                align-items: stretch;
            }
            .header-actions {
                justify-content: space-between;
            }
            .search-box input {
                width: 160px;
            }
            .hero {
                padding: 60px 0 50px;
            }
            .hero-inner h1 {
                font-size: 32px;
            }
            .hero-inner p {
                font-size: 16px;
            }
            .hero-stats {
                gap: 10px;
            }
            .about-content {
                padding: 32px 24px;
            }
            .about-content h3 {
                font-size: 24px;
            }
            .category-card-img {
                height: 170px;
            }
            .features-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .stats-row {
                grid-template-columns: 1fr;
                text-align: center;
            }
            .stat-item {
                border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            }
            .stat-item:last-child {
                border-bottom: none;
            }
            .process-arrow {
                display: none;
            }
            .cta-box h2 {
                font-size: 28px;
            }
            .footer-top {
                flex-direction: column;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .header-login-btn {
                padding: 7px 14px;
                font-size: 12px;
            }
        }
        @media (max-width: 520px) {
            .nav-tabs a {
                padding: 6px 16px;
                font-size: 13px;
            }
            .hero-inner h1 {
                font-size: 26px;
            }
            .hero-inner p {
                font-size: 14px;
            }
            .hero-actions .btn {
                padding: 10px 20px;
                font-size: 14px;
            }
            .feature-list {
                grid-template-columns: 1fr;
            }
            .section-head p {
                font-size: 14px;
            }
            .brand a {
                font-size: 18px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #2d5bff;
            --primary-dark: #1e40af;
            --primary-light: #eef2ff;
            --accent: #f59e0b;
            --accent-light: #fef3c7;
            --bg: #f7f9fc;
            --bg-alt: #eef1f6;
            --text: #16233a;
            --text-light: #5b6b83;
            --border: #dfe5ef;
            --white: #ffffff;
            --radius: 18px;
            --radius-sm: 12px;
            --shadow: 0 6px 24px rgba(21, 35, 58, 0.08);
            --shadow-hover: 0 16px 40px rgba(21, 35, 58, 0.14);
            --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font-base: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: var(--font-base);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }

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

        button,
        input {
            font-family: inherit;
            font-size: inherit;
        }

        .grid-container {
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* ========== Header 双层导航 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: var(--white);
            box-shadow: 0 1px 10px rgba(21, 35, 58, 0.06);
        }

        .header-top {
            border-bottom: 1px solid var(--border);
            background: var(--white);
        }

        .header-top-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 68px;
            gap: 20px;
            flex-wrap: wrap;
            padding: 10px 0;
        }

        .brand a {
            font-size: 1.55rem;
            font-weight: 800;
            color: var(--text);
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .brand a::before {
            content: "";
            width: 10px;
            height: 10px;
            border-radius: 3px;
            background: var(--primary);
            display: inline-block;
            box-shadow: 0 0 0 4px var(--primary-light);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .search-box {
            display: flex;
            align-items: center;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 40px;
            padding: 4px 6px 4px 16px;
            width: 260px;
            transition: var(--transition);
        }

        .search-box:focus-within {
            border-color: var(--primary);
            background: var(--white);
            box-shadow: 0 0 0 4px var(--primary-light);
        }

        .search-box input {
            border: none;
            background: transparent;
            outline: none;
            width: 100%;
            font-size: 0.9rem;
            color: var(--text);
        }

        .search-box button {
            width: 34px;
            height: 34px;
            border-radius: 50%;
            background: var(--primary);
            color: var(--white);
            border: none;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition);
        }

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

        .header-login-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 20px;
            border-radius: 40px;
            background: var(--primary);
            color: var(--white);
            font-size: 0.9rem;
            font-weight: 600;
            transition: var(--transition);
            white-space: nowrap;
        }

        .header-login-btn:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(45, 91, 255, 0.3);
        }

        .header-nav {
            background: var(--white);
            border-bottom: 1px solid var(--border);
        }

        .nav-tabs {
            display: flex;
            gap: 4px;
            padding: 8px 0;
            overflow-x: auto;
            scrollbar-width: none;
            white-space: nowrap;
        }

        .nav-tabs::-webkit-scrollbar {
            display: none;
        }

        .nav-tabs a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 22px;
            border-radius: 30px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-light);
            transition: var(--transition);
            border: 1px solid transparent;
        }

        .nav-tabs a i {
            font-size: 0.9rem;
            color: var(--text-light);
            transition: var(--transition);
        }

        .nav-tabs a:hover {
            color: var(--primary);
            background: var(--primary-light);
            border-color: rgba(45, 91, 255, 0.08);
        }

        .nav-tabs a.active {
            color: var(--primary);
            background: var(--primary-light);
            border-color: rgba(45, 91, 255, 0.12);
            font-weight: 600;
        }

        .nav-tabs a.active i {
            color: var(--primary);
        }

        /* ========== 页面 Banner ========== */
        .page-banner {
            background-size: cover;
            background-position: center;
            padding: 80px 0 90px;
            position: relative;
            color: var(--white);
            text-align: center;
        }

        .page-banner::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10, 20, 40, 0.78), rgba(21, 35, 58, 0.62));
        }

        .banner-content {
            position: relative;
            z-index: 1;
            max-width: 720px;
            margin: 0 auto;
        }

        .banner-tag {
            display: inline-block;
            background: rgba(255, 255, 255, 0.16);
            border: 1px solid rgba(255, 255, 255, 0.3);
            padding: 6px 18px;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 1px;
            backdrop-filter: blur(4px);
        }

        .banner-content h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.25;
            margin: 22px 0 14px;
            letter-spacing: -0.02em;
        }

        .banner-content p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.88);
            max-width: 560px;
            margin: 0 auto 22px;
        }

        .breadcrumb {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.7);
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, 0.85);
        }

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

        .breadcrumb .sep {
            color: rgba(255, 255, 255, 0.4);
        }

        /* ========== 通用 Section ========== */
        .section {
            padding: 80px 0;
        }

        .section-alt {
            background: var(--white);
        }

        .section-head {
            text-align: center;
            max-width: 620px;
            margin: 0 auto 50px;
        }

        .section-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 0.82rem;
            font-weight: 600;
            padding: 5px 16px;
            border-radius: 30px;
            letter-spacing: 0.6px;
            margin-bottom: 12px;
        }

        .section-head h2 {
            font-size: 2rem;
            font-weight: 800;
            margin: 0 0 10px;
            letter-spacing: -0.02em;
            color: var(--text);
        }

        .section-head p {
            color: var(--text-light);
            font-size: 1.05rem;
            margin: 0;
        }

        /* ========== 登录方式卡片 ========== */
        .methods-section {
            background: var(--white);
            border-bottom: 1px solid var(--border);
        }

        .method-card {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 36px 28px;
            height: 100%;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            position: relative;
            overflow: hidden;
        }

        .method-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: 0;
            transition: var(--transition);
        }

        .method-card:hover {
            background: var(--white);
            border-color: rgba(45, 91, 255, 0.25);
            box-shadow: var(--shadow-hover);
            transform: translateY(-6px);
        }

        .method-card:hover::before {
            opacity: 1;
        }

        .method-icon {
            width: 64px;
            height: 64px;
            border-radius: 18px;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--primary);
            margin-bottom: 20px;
            transition: var(--transition);
        }

        .method-card:hover .method-icon {
            background: var(--primary);
            color: var(--white);
            box-shadow: 0 10px 20px rgba(45, 91, 255, 0.25);
            transform: rotate(-6deg) scale(1.05);
        }

        .method-card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin: 0 0 10px;
            color: var(--text);
        }

        .method-card p {
            color: var(--text-light);
            font-size: 0.95rem;
            margin: 0 0 18px;
            flex: 1;
        }

        .method-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--primary);
            font-weight: 600;
            font-size: 0.9rem;
        }

        .method-link i {
            transition: transform 0.3s ease;
        }

        .method-link:hover i {
            transform: translateX(4px);
        }

        /* ========== 流程步骤 ========== */
        .steps-section {
            background: var(--bg);
        }

        .steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .step-item {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 32px 24px;
            position: relative;
            transition: var(--transition);
        }

        .step-item:hover {
            box-shadow: var(--shadow-hover);
            border-color: rgba(45, 91, 255, 0.2);
            transform: translateY(-4px);
        }

        .step-number {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--primary-light);
            line-height: 1;
            margin-bottom: 16px;
            letter-spacing: -0.03em;
            transition: var(--transition);
        }

        .step-item:hover .step-number {
            color: var(--primary);
        }

        .step-content h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin: 0 0 8px;
            color: var(--text);
        }

        .step-content p {
            color: var(--text-light);
            font-size: 0.92rem;
            margin: 0;
            line-height: 1.7;
        }

        /* ========== 安全验证区块 ========== */
        .security-section {
            background: var(--white);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .security-media {
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            position: relative;
        }

        .security-media img {
            width: 100%;
            height: 420px;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .security-media:hover img {
            transform: scale(1.03);
        }

        .security-content {
            padding: 14px 0 14px 30px;
        }

        .security-content h2 {
            font-size: 2rem;
            font-weight: 800;
            margin: 10px 0 14px;
            letter-spacing: -0.02em;
            color: var(--text);
        }

        .security-content p {
            color: var(--text-light);
            font-size: 1.05rem;
            margin: 0 0 22px;
            line-height: 1.8;
        }

        .security-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .security-list li {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            padding: 14px 0;
            border-bottom: 1px solid var(--border);
            transition: var(--transition);
        }

        .security-list li:last-child {
            border-bottom: none;
        }

        .security-list li:hover {
            padding-left: 8px;
        }

        .security-list li i {
            width: 42px;
            height: 42px;
            flex-shrink: 0;
            border-radius: 12px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.05rem;
        }

        .security-list li span {
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.65;
        }

        .security-list li strong {
            display: block;
            color: var(--text);
            font-size: 1rem;
            margin-bottom: 2px;
        }

        /* ========== 问题排查卡片 ========== */
        .trouble-section {
            background: var(--bg);
        }

        .trouble-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 30px 26px;
            height: 100%;
            transition: var(--transition);
            position: relative;
        }

        .trouble-card:hover {
            box-shadow: var(--shadow-hover);
            border-color: rgba(45, 91, 255, 0.2);
            transform: translateY(-5px);
        }

        .trouble-icon {
            width: 54px;
            height: 54px;
            border-radius: 16px;
            background: var(--accent-light);
            color: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            margin-bottom: 18px;
            transition: var(--transition);
        }

        .trouble-card:hover .trouble-icon {
            background: var(--accent);
            color: var(--white);
            box-shadow: 0 8px 18px rgba(245, 158, 11, 0.25);
        }

        .trouble-card h3 {
            font-size: 1.12rem;
            font-weight: 700;
            margin: 0 0 10px;
            color: var(--text);
        }

        .trouble-card p {
            color: var(--text-light);
            font-size: 0.93rem;
            margin: 0;
            line-height: 1.72;
        }

        /* ========== FAQ ========== */
        .faq-section {
            background: var(--white);
            border-top: 1px solid var(--border);
        }

        .faq-intro {
            padding-right: 30px;
        }

        .faq-intro h2 {
            font-size: 2rem;
            font-weight: 800;
            margin: 10px 0 14px;
            letter-spacing: -0.02em;
            color: var(--text);
        }

        .faq-intro p {
            color: var(--text-light);
            font-size: 1rem;
            margin: 0 0 24px;
            line-height: 1.7;
        }

        .faq-list {
            display: flex;
            flex-direction: column;
        }

        .faq-item {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 20px 24px;
            margin-bottom: 14px;
            transition: var(--transition);
            overflow: hidden;
        }

        .faq-item:hover {
            border-color: rgba(45, 91, 255, 0.25);
            box-shadow: var(--shadow);
        }

        .faq-item summary {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text);
            cursor: pointer;
            list-style: none;
            user-select: none;
            gap: 16px;
            transition: var(--transition);
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary i {
            color: var(--primary);
            font-size: 0.9rem;
            flex-shrink: 0;
            transition: transform 0.3s ease;
        }

        .faq-item[open] {
            background: var(--white);
            border-color: rgba(45, 91, 255, 0.15);
        }

        .faq-item[open] summary {
            color: var(--primary);
        }

        .faq-item[open] summary i {
            transform: rotate(45deg);
        }

        .faq-item p {
            margin: 16px 2px 0;
            color: var(--text-light);
            line-height: 1.75;
            font-size: 0.93rem;
            animation: fadeSlideIn 0.35s ease;
        }

        @keyframes fadeSlideIn {
            from {
                opacity: 0;
                transform: translateY(-6px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* ========== 按钮 ========== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            padding: 12px 26px;
            border-radius: 12px;
            font-size: 0.95rem;
            font-weight: 600;
            text-decoration: none;
            border: 2px solid transparent;
            cursor: pointer;
            transition: var(--transition);
            line-height: 1.4;
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--primary);
            color: var(--white);
            box-shadow: 0 6px 18px rgba(45, 91, 255, 0.25);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            color: var(--white);
            transform: translateY(-2px);
            box-shadow: 0 10px 24px rgba(45, 91, 255, 0.35);
        }

        .btn-outline {
            background: transparent;
            color: var(--primary);
            border-color: var(--primary);
        }

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

        /* ========== CTA 区块 ========== */
        .cta-section {
            padding: 0;
            background: transparent;
        }

        .cta-block {
            background: linear-gradient(120deg, #1e3a8a 0%, #2d5bff 60%, #3b6bff 100%);
            border-radius: var(--radius);
            padding: 60px 50px;
            text-align: center;
            color: var(--white);
            position: relative;
            overflow: hidden;
            box-shadow: 0 20px 56px rgba(30, 58, 138, 0.35);
        }

        .cta-block::before {
            content: "";
            position: absolute;
            top: -50%;
            right: -20%;
            width: 320px;
            height: 320px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
        }

        .cta-block::after {
            content: "";
            position: absolute;
            bottom: -70%;
            left: -10%;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.05);
        }

        .cta-block h2 {
            font-size: 2.1rem;
            font-weight: 800;
            margin: 0 0 12px;
            letter-spacing: -0.02em;
            position: relative;
            z-index: 1;
        }

        .cta-block p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.85);
            margin: 0 0 30px;
            position: relative;
            z-index: 1;
        }

        .cta-buttons {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }

        .btn-ghost {
            background: rgba(255, 255, 255, 0.14);
            color: var(--white);
            border-color: rgba(255, 255, 255, 0.4);
        }

        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.26);
            color: var(--white);
            transform: translateY(-2px);
        }

        /* ========== 推荐内容 ========== */
        .related-section {
            background: var(--bg);
            border-top: 1px solid var(--border);
        }

        .related-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            height: 100%;
            transition: var(--transition);
        }

        .related-card:hover {
            box-shadow: var(--shadow-hover);
            border-color: rgba(45, 91, 255, 0.2);
            transform: translateY(-6px);
        }

        .related-cover {
            position: relative;
            overflow: hidden;
            height: 200px;
        }

        .related-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .related-card:hover .related-cover img {
            transform: scale(1.06);
        }

        .related-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(22, 35, 58, 0.75);
            color: var(--white);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 20px;
            backdrop-filter: blur(4px);
            letter-spacing: 0.5px;
        }

        .related-body {
            padding: 22px 24px 26px;
        }

        .related-body h3 {
            font-size: 1.08rem;
            font-weight: 700;
            margin: 0 0 8px;
            color: var(--text);
            line-height: 1.5;
        }

        .related-body p {
            color: var(--text-light);
            font-size: 0.9rem;
            margin: 0 0 16px;
            line-height: 1.65;
        }

        .related-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary);
            font-size: 0.88rem;
            font-weight: 600;
        }

        .related-link i {
            transition: transform 0.3s ease;
        }

        .related-link:hover i {
            transform: translateX(4px);
        }

        /* ========== Footer ========== */
        .site-footer {
            background: #10182b;
            color: rgba(255, 255, 255, 0.75);
            padding-top: 60px;
        }

        .footer-top {
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
            gap: 40px;
            flex-wrap: wrap;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-brand {
            max-width: 360px;
        }

        .footer-brand .brand-name {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.45rem;
            font-weight: 800;
            color: var(--white);
            letter-spacing: -0.02em;
        }

        .footer-brand .brand-name::before {
            content: "";
            width: 9px;
            height: 9px;
            border-radius: 3px;
            background: var(--accent);
            display: inline-block;
            box-shadow: 0 0 0 4px rgba(245, 158, 11, 0.25);
        }

        .footer-brand p {
            font-size: 0.93rem;
            line-height: 1.7;
            margin: 16px 0 0;
            color: rgba(255, 255, 255, 0.6);
        }

        .footer-nav {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            justify-content: flex-end;
            padding-top: 6px;
        }

        .footer-nav a {
            padding: 8px 18px;
            border-radius: 30px;
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.92rem;
            transition: var(--transition);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-nav a:hover {
            color: var(--white);
            background: rgba(255, 255, 255, 0.06);
            border-color: rgba(255, 255, 255, 0.22);
        }

        .footer-bottom {
            padding: 24px 0 28px;
            text-align: center;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .footer-bottom p {
            margin: 0;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.42);
        }

        /* ========== 响应式断点 ========== */
        @media screen and (max-width: 1024px) {
            .page-banner {
                padding: 65px 0 75px;
            }

            .banner-content h1 {
                font-size: 2.3rem;
            }

            .steps {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }

            .security-media img {
                height: 360px;
            }
        }

        @media screen and (max-width: 768px) {
            .header-top-inner {
                flex-direction: column;
                align-items: stretch;
                gap: 12px;
                padding: 12px 0;
            }

            .header-actions {
                justify-content: space-between;
                width: 100%;
            }

            .search-box {
                flex: 1;
                width: auto;
            }

            .brand a {
                font-size: 1.35rem;
            }

            .section {
                padding: 60px 0;
            }

            .section-head {
                margin-bottom: 36px;
            }

            .section-head h2 {
                font-size: 1.65rem;
            }

            .page-banner {
                padding: 55px 0 65px;
            }

            .banner-content h1 {
                font-size: 1.9rem;
            }

            .banner-content p {
                font-size: 1rem;
            }

            .steps {
                grid-template-columns: 1fr;
            }

            .security-media img {
                height: 280px;
            }

            .security-content {
                padding: 30px 0 0;
            }

            .faq-intro {
                padding-right: 0;
                margin-bottom: 32px;
            }

            .cta-block {
                padding: 44px 26px;
            }

            .cta-block h2 {
                font-size: 1.6rem;
            }

            .footer-top {
                flex-direction: column;
                gap: 28px;
            }

            .footer-nav {
                justify-content: flex-start;
            }
        }

        @media screen and (max-width: 520px) {
            .grid-container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .header-actions {
                flex-wrap: wrap;
            }

            .search-box {
                width: 100%;
                flex-basis: 100%;
            }

            .header-login-btn {
                width: 100%;
                justify-content: center;
            }

            .nav-tabs a {
                padding: 9px 16px;
                font-size: 0.88rem;
            }

            .page-banner {
                padding: 45px 0 55px;
            }

            .banner-content h1 {
                font-size: 1.6rem;
            }

            .banner-content p {
                font-size: 0.93rem;
            }

            .section-head h2 {
                font-size: 1.4rem;
            }

            .method-card,
            .trouble-card {
                padding: 26px 20px;
            }

            .cta-block {
                padding: 38px 20px;
                border-radius: 14px;
            }

            .cta-buttons {
                flex-direction: column;
            }

            .btn {
                width: 100%;
                padding: 13px 20px;
            }

            .related-cover {
                height: 170px;
            }

            .footer-brand {
                max-width: 100%;
            }
        }

/* roulang page: article */
:root {
            --primary: #0e3a6e;
            --primary-dark: #082a52;
            --primary-600: #15579a;
            --primary-light: #e6f0fa;
            --accent: #d4a53e;
            --accent-hover: #bd9129;
            --bg: #f6f8fb;
            --surface: #ffffff;
            --text: #1a2634;
            --text-muted: #5f6b7c;
            --border: #e3e8ee;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --shadow-sm: 0 2px 10px rgba(15, 45, 80, .06);
            --shadow-md: 0 10px 32px rgba(15, 45, 80, .10);
            --shadow-lg: 0 22px 60px rgba(15, 45, 80, .16);
            --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            --transition: .25s ease;
        }

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

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

        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }

        a:hover {
            color: var(--primary-600);
        }

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
        }

        input,
        textarea {
            font-family: inherit;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.35;
            color: var(--text);
            margin: 0 0 .8em;
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 3px solid rgba(212, 165, 62, .45);
            outline-offset: 2px;
        }

        .grid-container {
            max-width: 1280px;
            padding-left: 24px;
            padding-right: 24px;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 200;
            background: linear-gradient(135deg, #0a1c33, #123a63);
            box-shadow: 0 4px 24px rgba(8, 30, 52, .35);
        }

        .header-top {
            border-bottom: 1px solid rgba(255, 255, 255, .08);
        }

        .header-top-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 72px;
            gap: 20px;
            padding: 8px 0;
        }

        .brand a {
            font-size: 1.42rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: .5px;
            white-space: nowrap;
        }

        .brand a:hover {
            color: var(--accent);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .search-box {
            display: flex;
            border: 1px solid rgba(255, 255, 255, .16);
            border-radius: 50px;
            overflow: hidden;
            background: rgba(255, 255, 255, .1);
        }

        .search-box input {
            border: none;
            background: transparent;
            color: #fff;
            padding: 8px 16px;
            width: 220px;
            outline: none;
            font-size: .9rem;
        }

        .search-box input::placeholder {
            color: rgba(255, 255, 255, .55);
        }

        .search-box button {
            background: var(--accent);
            color: #0c2240;
            padding: 0 15px;
            font-size: .9rem;
            transition: background var(--transition);
        }

        .search-box button:hover {
            background: #fff;
        }

        .header-login-btn {
            background: transparent;
            border: 1px solid var(--accent);
            color: var(--accent);
            padding: 8px 20px;
            border-radius: 50px;
            font-weight: 600;
            font-size: .9rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: all var(--transition);
        }

        .header-login-btn:hover {
            background: var(--accent);
            color: #0c2240;
        }

        .header-nav {
            background: rgba(0, 0, 0, .18);
            backdrop-filter: blur(6px);
        }

        .nav-tabs {
            display: flex;
            gap: 4px;
            overflow-x: auto;
            padding: 8px 0;
            scrollbar-width: none;
        }

        .nav-tabs::-webkit-scrollbar {
            display: none;
        }

        .nav-tabs a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: rgba(255, 255, 255, .72);
            padding: 8px 18px;
            border-radius: 50px;
            font-size: .92rem;
            white-space: nowrap;
            border: 1px solid transparent;
            transition: all var(--transition);
        }

        .nav-tabs a i {
            font-size: .9rem;
        }

        .nav-tabs a:hover {
            color: #fff;
            background: rgba(255, 255, 255, .08);
        }

        .nav-tabs a.active {
            color: #fff;
            background: rgba(255, 255, 255, .14);
            border-color: rgba(255, 255, 255, .18);
            box-shadow: 0 4px 12px rgba(0, 0, 0, .1);
        }

        .page-banner {
            position: relative;
            padding: 72px 0 64px;
            background: linear-gradient(135deg, rgba(8, 32, 58, .94), rgba(14, 58, 110, .85)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            color: #fff;
            text-align: center;
            overflow: hidden;
        }

        .banner-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, .12);
            border: 1px solid rgba(255, 255, 255, .18);
            border-radius: 50px;
            padding: 6px 18px;
            font-size: .86rem;
            color: #f1e3c3;
            margin-bottom: 18px;
        }

        .page-banner h1 {
            font-size: 2.1rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
        }

        .page-banner p {
            color: rgba(255, 255, 255, .76);
            max-width: 680px;
            margin: 0 auto;
            font-size: 1rem;
        }

        .breadcrumb {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 10px;
            font-size: .88rem;
            color: rgba(255, 255, 255, .55);
            margin-bottom: 18px;
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, .85);
        }

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

        .article-section {
            padding: 64px 0;
        }

        .article-layout {
            display: grid;
            grid-template-columns: 1fr 340px;
            gap: 36px;
            align-items: start;
        }

        .article-main-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: 40px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
        }

        .article-title {
            font-size: 1.9rem;
            line-height: 1.35;
            font-weight: 800;
            margin-bottom: 16px;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            align-items: center;
            color: var(--text-muted);
            font-size: .88rem;
            padding-bottom: 20px;
            border-bottom: 1px solid var(--border);
        }

        .article-meta .badge {
            background: var(--primary-light);
            color: var(--primary);
            padding: 4px 14px;
            border-radius: 50px;
            font-size: .82rem;
            font-weight: 600;
        }

        .article-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .article-cover {
            margin: 24px 0 10px;
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }

        .article-cover img {
            width: 100%;
            height: auto;
            max-height: 460px;
            object-fit: cover;
        }

        .article-content {
            font-size: 1rem;
            line-height: 1.9;
            color: #314352;
            margin-top: 22px;
        }

        .article-content>* {
            margin-bottom: 1.2em;
        }

        .article-content h2 {
            font-size: 1.42rem;
            font-weight: 700;
            margin-top: 1.8em;
            padding-left: 14px;
            border-left: 4px solid var(--accent);
        }

        .article-content h3 {
            font-size: 1.18rem;
            font-weight: 700;
            margin-top: 1.5em;
        }

        .article-content a {
            color: var(--primary-600);
            border-bottom: 1px dashed var(--primary-600);
        }

        .article-content ul,
        .article-content ol {
            padding-left: 1.4em;
        }

        .article-content li {
            margin-bottom: .5em;
        }

        .article-content blockquote {
            background: var(--primary-light);
            border-radius: var(--radius-sm);
            padding: 16px 22px;
            border-left: 4px solid var(--primary);
            color: #45566b;
        }

        .article-content img {
            border-radius: 10px;
            margin: 16px 0;
            box-shadow: var(--shadow-sm);
        }

        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 18px 0;
        }

        .article-content table th,
        .article-content table td {
            border: 1px solid var(--border);
            padding: 10px 14px;
        }

        .article-content table th {
            background: var(--primary-light);
            font-weight: 600;
        }

        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 30px;
        }

        .tag {
            background: #f1f4f8;
            border: 1px solid var(--border);
            padding: 6px 14px;
            border-radius: 50px;
            font-size: .84rem;
            color: #52657a;
            transition: all var(--transition);
        }

        .tag:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        .share-row {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-top: 26px;
            padding-top: 20px;
            border-top: 1px solid var(--border);
            font-size: .9rem;
            color: var(--text-muted);
        }

        .share-btn {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: #eef2f6;
            color: #52657a;
            border: 1px solid transparent;
            transition: all var(--transition);
            font-size: .95rem;
        }

        .share-btn:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-sm);
            background: var(--primary);
            color: #fff;
        }

        .copy-tip {
            font-size: .82rem;
            color: var(--accent);
            margin-left: 6px;
            display: none;
        }

        .not-found {
            text-align: center;
            padding: 80px 40px;
        }

        .not-found i {
            font-size: 3rem;
            color: var(--accent);
            margin-bottom: 18px;
        }

        .not-found h2 {
            font-size: 1.6rem;
            margin-bottom: 10px;
        }

        .not-found p {
            color: var(--text-muted);
            margin-bottom: 24px;
        }

        .back-home-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            padding: 12px 32px;
            border-radius: 50px;
            font-weight: 600;
            transition: all var(--transition);
        }

        .back-home-btn:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 20px;
            position: sticky;
            top: 140px;
        }

        .side-card {
            background: var(--surface);
            border-radius: var(--radius-md);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
        }

        .side-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            padding-bottom: 14px;
            border-bottom: 2px solid var(--primary);
            margin-bottom: 16px;
            position: relative;
        }

        .article-list-item {
            display: flex;
            gap: 12px;
            padding: 10px 0;
            border-bottom: 1px solid #f0f3f6;
            align-items: center;
        }

        .article-list-item:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }

        .article-list-item img {
            width: 72px;
            height: 52px;
            object-fit: cover;
            border-radius: 8px;
            flex-shrink: 0;
        }

        .article-list-item .txt {
            flex: 1;
            min-width: 0;
        }

        .article-list-item .txt a {
            font-size: .9rem;
            line-height: 1.45;
            color: var(--text);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color var(--transition);
        }

        .article-list-item .txt a:hover {
            color: var(--primary);
        }

        .article-list-item .time {
            font-size: .78rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

        .empty-tip {
            color: var(--text-muted);
            font-size: .9rem;
            padding: 12px 0;
        }

        .side-nav {
            list-style: none;
        }

        .side-nav li {
            margin-bottom: 4px;
        }

        .side-nav a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 14px;
            border-radius: var(--radius-sm);
            color: var(--text);
            font-size: .92rem;
            transition: all var(--transition);
        }

        .side-nav a:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        .side-card-accent {
            background: linear-gradient(135deg, #0c2240, #123a63);
            color: rgba(255, 255, 255, .82);
            border: none;
        }

        .side-card-accent h3 {
            color: #fff;
            border-bottom-color: var(--accent);
        }

        .side-card-accent p {
            font-size: .88rem;
            margin-bottom: 16px;
        }

        .side-btn {
            display: inline-block;
            background: var(--accent);
            color: #0c2240;
            padding: 9px 24px;
            border-radius: 50px;
            font-weight: 600;
            font-size: .88rem;
            transition: all var(--transition);
        }

        .side-btn:hover {
            background: #fff;
            color: var(--primary);
            transform: translateY(-2px);
        }

        .related-section {
            padding: 66px 0 30px;
        }

        .section-head {
            text-align: center;
            margin-bottom: 36px;
        }

        .section-head h2 {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 6px;
        }

        .section-head h2 span {
            color: var(--accent);
        }

        .section-head p {
            color: var(--text-muted);
            font-size: .96rem;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 26px;
        }

        .article-card {
            background: var(--surface);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: transform var(--transition), box-shadow var(--transition);
        }

        .article-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }

        .card-img {
            display: block;
            overflow: hidden;
            position: relative;
        }

        .card-img img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            transition: transform .4s ease;
        }

        .article-card:hover .card-img img {
            transform: scale(1.05);
        }

        .card-body {
            padding: 18px 20px 22px;
        }

        .related-badge {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: .78rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 50px;
            margin-bottom: 10px;
        }

        .card-body h3 {
            font-size: 1rem;
            line-height: 1.5;
            margin: 0;
        }

        .card-body h3 a {
            color: var(--text);
            transition: color var(--transition);
        }

        .card-body h3 a:hover {
            color: var(--primary);
        }

        .cta-section {
            padding: 70px 0;
        }

        .cta-box {
            background: linear-gradient(135deg, rgba(10, 28, 51, .95), rgba(18, 58, 99, .92)), url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            border-radius: var(--radius-lg);
            padding: 56px 40px;
            text-align: center;
            color: #fff;
            box-shadow: var(--shadow-lg);
            position: relative;
            overflow: hidden;
        }

        .cta-box h2 {
            font-size: 1.8rem;
            color: #fff;
            margin-bottom: 8px;
        }

        .cta-box p {
            color: rgba(255, 255, 255, .78);
            margin-bottom: 24px;
            font-size: 1rem;
        }

        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--accent);
            color: #0c2240;
            padding: 13px 36px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            box-shadow: 0 6px 20px rgba(0, 0, 0, .15);
            transition: all var(--transition);
        }

        .cta-btn:hover {
            background: #fff;
            color: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 12px 30px rgba(0, 0, 0, .22);
        }

        .site-footer {
            background: #0a1c33;
            color: rgba(255, 255, 255, .68);
            padding: 56px 0 20px;
        }

        .footer-top {
            display: flex;
            justify-content: space-between;
            gap: 40px;
            flex-wrap: wrap;
            padding-bottom: 30px;
            border-bottom: 1px solid rgba(255, 255, 255, .08);
        }

        .footer-brand {
            max-width: 440px;
        }

        .footer-brand .brand-name {
            font-size: 1.3rem;
            color: #fff;
            font-weight: 800;
        }

        .footer-brand p {
            margin-top: 12px;
            font-size: .92rem;
            line-height: 1.7;
        }

        .footer-nav {
            display: flex;
            gap: 24px;
            align-items: flex-start;
            flex-wrap: wrap;
        }

        .footer-nav a {
            color: rgba(255, 255, 255, .72);
            font-size: .92rem;
            transition: color var(--transition);
        }

        .footer-nav a:hover {
            color: var(--accent);
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            padding-top: 22px;
            font-size: .86rem;
            color: rgba(255, 255, 255, .4);
        }

        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
            }

            .article-sidebar {
                position: static;
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
        }

        @media (max-width: 768px) {
            .grid-container {
                padding-left: 18px;
                padding-right: 18px;
            }

            .header-top-inner {
                flex-wrap: wrap;
                padding: 12px 0;
                gap: 12px;
            }

            .search-box input {
                width: 140px;
            }

            .page-banner {
                padding: 56px 0;
            }

            .page-banner h1 {
                font-size: 1.6rem;
            }

            .article-main-card {
                padding: 28px 20px;
            }

            .article-title {
                font-size: 1.4rem;
            }

            .related-grid {
                grid-template-columns: 1fr;
                max-width: 460px;
                margin: 0 auto;
            }

            .cta-box {
                padding: 44px 24px;
            }

            .cta-box h2 {
                font-size: 1.4rem;
            }
        }

        @media (max-width: 520px) {
            .grid-container {
                padding-left: 14px;
                padding-right: 14px;
            }

            .header-top-inner {
                flex-direction: column;
                align-items: stretch;
                text-align: center;
            }

            .brand a {
                font-size: 1.25rem;
            }

            .header-actions {
                flex-wrap: wrap;
                justify-content: center;
            }

            .search-box {
                flex: 1;
                max-width: 280px;
            }

            .search-box input {
                flex: 1;
                width: auto;
            }

            .article-sidebar {
                grid-template-columns: 1fr;
            }

            .article-main-card {
                padding: 22px 16px;
            }

            .article-meta {
                gap: 8px;
                font-size: .82rem;
            }

            .footer-top {
                flex-direction: column;
                gap: 24px;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: center;
                text-align: center;
            }

            .cta-btn {
                width: 100%;
                justify-content: center;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #1d3f8e;
            --primary-dark: #12295f;
            --primary-light: #3b62c8;
            --accent: #d9a521;
            --accent-dark: #b5861a;
            --accent-light: #f5d36b;
            --page-bg: #f2f5fa;
            --white: #ffffff;
            --dark-bg: #0b1734;
            --dark-bg-2: #10214a;
            --text-main: #16233c;
            --text-muted: #5f6d8b;
            --text-light: #8f9db5;
            --border: #dfe6f0;
            --radius-lg: 24px;
            --radius-md: 16px;
            --radius-sm: 10px;
            --shadow-sm: 0 4px 14px rgba(16, 33, 74, 0.06);
            --shadow-md: 0 10px 30px rgba(16, 33, 74, 0.10);
            --shadow-lg: 0 24px 60px rgba(16, 33, 74, 0.16);
            --transition: all 0.3s cubic-bezier(.4, 0, .2, 1);
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Helvetica Neue", Arial, sans-serif;
            background: var(--page-bg);
            color: var(--text-main);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }

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

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

        ul,
        ol,
        dl,
        p,
        h1,
        h2,
        h3,
        h4,
        h5 {
            margin: 0;
            padding: 0;
        }

        button,
        input {
            font-family: inherit;
        }

        .grid-container {
            max-width: 1280px;
            padding-left: 24px;
            padding-right: 24px;
        }

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

        .grid-x.grid-margin-x>.cell {
            margin-bottom: 24px;
        }

        /* ===== 站点头部 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: var(--white);
            box-shadow: 0 2px 12px rgba(16, 33, 74, 0.06);
        }

        .header-top {
            border-bottom: 1px solid var(--border);
            padding: 12px 0;
        }

        .header-top-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
        }

        .brand a {
            font-size: 24px;
            font-weight: 800;
            color: var(--primary-dark);
            letter-spacing: -0.3px;
            white-space: nowrap;
        }

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

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .search-box {
            display: flex;
            align-items: center;
            background: var(--page-bg);
            border: 1px solid var(--border);
            border-radius: 999px;
            padding: 4px 4px 4px 16px;
            width: 280px;
            transition: var(--transition);
        }

        .search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(29, 63, 142, 0.12);
        }

        .search-box input {
            border: none;
            background: transparent;
            outline: none;
            font-size: 14px;
            width: 100%;
            color: var(--text-main);
        }

        .search-box button {
            background: var(--primary);
            border: none;
            color: #fff;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }

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

        .header-login-btn {
            background: var(--accent);
            color: #fff;
            border-radius: 999px;
            padding: 8px 18px;
            font-size: 14px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
            white-space: nowrap;
        }

        .header-login-btn:hover {
            background: var(--accent-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(217, 165, 33, 0.3);
        }

        .header-nav {
            background: var(--white);
            padding: 0;
        }

        .nav-tabs {
            display: flex;
            gap: 4px;
            padding: 8px 0;
            overflow-x: auto;
            scrollbar-width: none;
        }

        .nav-tabs::-webkit-scrollbar {
            display: none;
        }

        .nav-tabs a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 9px 20px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-muted);
            white-space: nowrap;
            transition: var(--transition);
        }

        .nav-tabs a:hover {
            background: var(--page-bg);
            color: var(--primary);
        }

        .nav-tabs a.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 6px 16px rgba(29, 63, 142, 0.25);
        }

        /* ===== 页面横幅 ===== */
        .page-hero {
            position: relative;
            padding: 96px 0 88px;
            background: var(--dark-bg);
            overflow: hidden;
        }

        .page-hero .hero-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
            opacity: 0.35;
        }

        .page-hero .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(11, 23, 52, 0.95) 0%, rgba(16, 33, 74, 0.75) 60%, rgba(16, 33, 74, 0.25) 100%);
        }

        .page-hero .grid-container {
            position: relative;
            z-index: 2;
        }

        .hero-content {
            max-width: 760px;
        }

        .hero-badge {
            display: inline-block;
            background: rgba(217, 165, 33, 0.2);
            border: 1px solid rgba(217, 165, 33, 0.6);
            color: var(--accent-light);
            font-size: 14px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 999px;
            margin-bottom: 20px;
            letter-spacing: 0.5px;
        }

        .hero-content h1 {
            font-size: 44px;
            line-height: 1.2;
            color: #fff;
            font-weight: 800;
            margin-bottom: 18px;
            letter-spacing: -0.5px;
        }

        .hero-content p {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.82);
            margin-bottom: 32px;
            line-height: 1.7;
        }

        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 999px;
            font-size: 16px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: var(--transition);
        }

        .btn-primary {
            background: var(--accent);
            color: var(--dark-bg);
        }

        .btn-primary:hover {
            background: var(--accent-light);
            color: var(--dark-bg);
            transform: translateY(-2px);
            box-shadow: 0 12px 28px rgba(217, 165, 33, 0.4);
        }

        .btn-outline-light {
            background: transparent;
            border: 2px solid rgba(255, 255, 255, 0.5);
            color: #fff;
        }

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

        /* ===== 主题标签 ===== */
        .topic-tabs-section {
            background: var(--white);
            border-bottom: 1px solid var(--border);
            padding: 20px 0;
        }

        .topic-tabs {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }

        .topic-tab {
            padding: 8px 18px;
            border-radius: 999px;
            background: var(--page-bg);
            color: var(--text-muted);
            font-size: 14px;
            font-weight: 500;
            cursor: pointer;
            transition: var(--transition);
            border: 1px solid transparent;
        }

        .topic-tab:hover,
        .topic-tab.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 6px 18px rgba(29, 63, 142, 0.2);
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 88px 0;
        }

        .section-alt {
            background: var(--white);
        }

        .section-head {
            margin-bottom: 48px;
        }

        .section-head h2 {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.25;
            margin-bottom: 12px;
            color: var(--text-main);
        }

        .section-head p {
            color: var(--text-muted);
            font-size: 16px;
            max-width: 600px;
        }

        /* ===== 功能卡片 ===== */
        .guide-list-section {
            background: var(--page-bg);
        }

        .guide-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .guide-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }

        .guide-card-img {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 9;
        }

        .guide-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .guide-card:hover .guide-card-img img {
            transform: scale(1.05);
        }

        .guide-card-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(11, 23, 52, 0.75);
            backdrop-filter: blur(6px);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 5px 14px;
            border-radius: 999px;
        }

        .guide-card-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .guide-card-body h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .guide-card-body h3 a {
            color: var(--text-main);
        }

        .guide-card-body h3 a:hover {
            color: var(--primary);
        }

        .guide-card-body p {
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.65;
            flex: 1;
        }

        .guide-card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: 18px;
            padding-top: 14px;
            border-top: 1px solid var(--border);
            font-size: 13px;
            color: var(--text-light);
        }

        .guide-card-meta a {
            color: var(--primary);
            font-weight: 600;
        }

        /* ===== 快速上手步骤 ===== */
        .step-section {
            background: var(--white);
        }

        .steps-wrap {
            display: flex;
            gap: 24px;
            counter-reset: step;
        }

        .step-item {
            flex: 1;
            background: var(--page-bg);
            border-radius: var(--radius-lg);
            padding: 28px;
            position: relative;
            border: 1px solid var(--border);
            counter-increment: step;
            transition: var(--transition);
        }

        .step-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            background: var(--white);
        }

        .step-item::before {
            content: counter(step);
            position: absolute;
            top: 20px;
            right: 24px;
            font-size: 56px;
            font-weight: 800;
            color: rgba(29, 63, 142, 0.08);
            line-height: 1;
        }

        .step-icon {
            width: 48px;
            height: 48px;
            background: var(--primary);
            color: #fff;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 18px;
        }

        .step-item h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .step-item p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ===== 数据统计 ===== */
        .stats-section {
            background: var(--dark-bg);
            padding: 72px 0;
        }

        .stats-grid {
            display: flex;
            gap: 24px;
            justify-content: space-between;
        }

        .stat-item {
            flex: 1;
            text-align: center;
            color: #fff;
            padding: 24px;
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-lg);
            background: rgba(255, 255, 255, 0.04);
            backdrop-filter: blur(4px);
            transition: var(--transition);
        }

        .stat-item:hover {
            background: rgba(255, 255, 255, 0.08);
            transform: translateY(-4px);
        }

        .stat-number {
            font-size: 44px;
            font-weight: 800;
            color: var(--accent-light);
            line-height: 1.2;
        }

        .stat-label {
            margin-top: 8px;
            color: rgba(255, 255, 255, 0.7);
            font-size: 15px;
        }

        /* ===== 热门排行 ===== */
        .hot-list-section {
            background: var(--page-bg);
        }

        .hot-list {
            background: var(--white);
            border-radius: 24px;
            border: 1px solid var(--border);
            padding: 28px 32px;
            box-shadow: var(--shadow-sm);
        }

        .hot-list ol {
            list-style: none;
            counter-reset: hot;
        }

        .hot-list li {
            counter-increment: hot;
            padding: 16px 0;
            border-bottom: 1px dashed var(--border);
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .hot-list li:last-child {
            border-bottom: none;
        }

        .hot-list li::before {
            content: counter(hot);
            width: 32px;
            height: 32px;
            border-radius: 10px;
            background: var(--page-bg);
            color: var(--primary);
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            flex-shrink: 0;
        }

        .hot-list li:nth-child(-n+3)::before {
            background: var(--accent);
            color: #fff;
        }

        .hot-title {
            font-weight: 600;
            color: var(--text-main);
            flex: 1;
        }

        .hot-title a {
            color: inherit;
        }

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

        .hot-tag {
            font-size: 12px;
            background: var(--page-bg);
            color: var(--text-muted);
            padding: 4px 12px;
            border-radius: 999px;
            white-space: nowrap;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--white);
        }

        .faq-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            overflow: hidden;
            transition: var(--transition);
            background: var(--white);
        }

        .faq-item[open] {
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }

        .faq-item summary {
            padding: 18px 24px;
            font-weight: 600;
            cursor: pointer;
            list-style: none;
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 16px;
            color: var(--text-main);
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary::before {
            content: "\f059";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            color: var(--primary);
            font-size: 18px;
        }

        .faq-item[open] summary::before {
            content: "\f0c5";
            color: var(--accent);
        }

        .faq-answer {
            padding: 0 24px 20px 54px;
            color: var(--text-muted);
            line-height: 1.7;
            font-size: 15px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--dark-bg-2);
            padding: 72px 0;
        }

        .cta-inner {
            text-align: center;
            max-width: 700px;
            margin: 0 auto;
        }

        .cta-inner h2 {
            color: #fff;
            font-size: 30px;
            font-weight: 800;
            margin-bottom: 12px;
        }

        .cta-inner p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 16px;
            margin-bottom: 24px;
        }

        .btn-cta {
            background: var(--accent);
            color: var(--dark-bg);
        }

        .btn-cta:hover {
            background: var(--accent-light);
            color: var(--dark-bg);
            transform: translateY(-2px);
            box-shadow: 0 12px 28px rgba(217, 165, 33, 0.4);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--dark-bg);
            color: rgba(255, 255, 255, 0.72);
            padding: 64px 0 32px;
        }

        .footer-top {
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-brand {
            max-width: 320px;
        }

        .brand-name {
            font-size: 22px;
            font-weight: 800;
            color: #fff;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            margin-top: 10px;
            color: rgba(255, 255, 255, 0.6);
        }

        .footer-nav {
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
        }

        .footer-nav a {
            color: rgba(255, 255, 255, 0.72);
            font-size: 15px;
        }

        .footer-nav a:hover {
            color: var(--accent-light);
        }

        .footer-bottom {
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .search-box {
                width: 220px;
            }

            .hero-content h1 {
                font-size: 36px;
            }

            .section {
                padding: 72px 0;
            }
        }

        @media (max-width: 768px) {
            .header-top-inner {
                flex-direction: column;
                align-items: stretch;
            }

            .header-actions {
                justify-content: space-between;
            }

            .search-box {
                width: 100%;
                flex: 1;
            }

            .header-login-btn {
                white-space: nowrap;
            }

            .hero-content h1 {
                font-size: 30px;
            }

            .hero-content p {
                font-size: 16px;
            }

            .topic-tabs {
                flex-wrap: nowrap;
                overflow-x: auto;
                -webkit-overflow-scrolling: touch;
            }

            .topic-tab {
                white-space: nowrap;
            }

            .steps-wrap {
                flex-direction: column;
            }

            .stats-grid {
                flex-direction: column;
            }

            .footer-top {
                flex-direction: column;
                gap: 24px;
            }

            .footer-bottom {
                flex-direction: column;
            }
        }

        @media (max-width: 520px) {
            .page-hero {
                padding: 64px 0;
            }

            .hero-content h1 {
                font-size: 26px;
            }

            .section {
                padding: 56px 0;
            }

            .section-head h2 {
                font-size: 24px;
            }

            .guide-card-body {
                padding: 18px;
            }

            .hot-list {
                padding: 18px;
            }

            .hot-list li {
                flex-wrap: wrap;
                gap: 8px;
            }

            .hot-tag {
                margin-left: 48px;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #2d3b8f;
            --primary-dark: #19266b;
            --accent: #0ea5a0;
            --accent-light: #e6f7f6;
            --bg: #f4f6fb;
            --white: #ffffff;
            --text: #172033;
            --text-muted: #5d6680;
            --border: #dfe3f2;
            --radius: 18px;
            --radius-sm: 12px;
            --shadow: 0 14px 36px rgba(45, 59, 143, 0.08);
            --shadow-hover: 0 22px 50px rgba(45, 59, 143, 0.15);
            --transition: all 0.25s ease;
            --font-body: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, "Segoe UI", sans-serif;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html,
        body {
            margin: 0;
            padding: 0;
        }

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }

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

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

        button {
            font-family: inherit;
            cursor: pointer;
        }

        input {
            font-family: inherit;
        }

        h1,
        h2,
        h3,
        h4 {
            margin: 0 0 12px;
            line-height: 1.35;
            font-weight: 700;
            letter-spacing: -0.02em;
        }

        p {
            margin: 0 0 16px;
        }

        .grid-container {
            max-width: 1160px;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* ========== Header ========== */
        .site-header {
            background: var(--white);
            box-shadow: 0 6px 24px rgba(45, 59, 143, 0.07);
            position: relative;
            z-index: 60;
        }

        .header-top {
            border-bottom: 1px solid var(--border);
        }

        .header-top-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap;
            padding: 16px 0;
        }

        .brand a {
            font-size: 21px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.02em;
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }

        .brand a i {
            color: var(--accent);
            font-size: 22px;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .search-box {
            display: flex;
            align-items: center;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 50px;
            padding: 4px 4px 4px 16px;
            transition: var(--transition);
        }

        .search-box:focus-within {
            border-color: var(--accent);
            background: var(--white);
            box-shadow: 0 0 0 3px rgba(14, 165, 160, 0.15);
        }

        .search-box input {
            width: 210px;
            border: none;
            outline: none;
            background: transparent;
            font-size: 14px;
            color: var(--text);
        }

        .search-box button {
            width: 34px;
            height: 34px;
            border: 0;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }

        .search-box button:hover {
            background: var(--accent);
        }

        .header-login-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 20px;
            border-radius: 50px;
            background: var(--primary);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            transition: var(--transition);
        }

        .header-login-btn:hover {
            background: var(--accent);
            color: #fff;
            transform: translateY(-2px);
        }

        .header-nav {
            background: var(--primary);
        }

        .nav-tabs {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: nowrap;
            overflow-x: auto;
            scrollbar-width: none;
            padding: 0;
        }

        .nav-tabs::-webkit-scrollbar {
            display: none;
        }

        .nav-tabs a {
            color: rgba(255, 255, 255, 0.82);
            padding: 14px 22px;
            font-size: 15px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border-bottom: 3px solid transparent;
            white-space: nowrap;
            transition: background 0.25s, color 0.25s;
        }

        .nav-tabs a i {
            font-size: 14px;
        }

        .nav-tabs a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.1);
        }

        .nav-tabs a.active {
            color: #fff;
            border-bottom-color: var(--accent);
            background: rgba(255, 255, 255, 0.08);
        }

        /* ========== Page Banner ========== */
        .page-banner {
            position: relative;
            padding: 96px 0 84px;
            background-size: cover;
            background-position: center;
            color: #fff;
        }

        .page-banner::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(18, 31, 87, 0.94) 16%, rgba(14, 165, 160, 0.72) 100%);
        }

        .banner-inner {
            position: relative;
            z-index: 2;
            max-width: 760px;
            margin: 0 auto;
            text-align: center;
        }

        .breadcrumb-nav {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 10px;
            margin-bottom: 20px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.8);
        }

        .breadcrumb-nav a {
            color: rgba(255, 255, 255, 0.9);
            padding: 4px 10px;
            border-radius: 20px;
            background: rgba(255, 255, 255, 0.12);
        }

        .breadcrumb-nav a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.24);
        }

        .banner-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 7px 18px;
            border-radius: 40px;
            background: rgba(255, 255, 255, 0.15);
            border: 1px solid rgba(255, 255, 255, 0.25);
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 16px;
        }

        .banner-inner h1 {
            font-size: 2.6rem;
            line-height: 1.25;
            margin-bottom: 18px;
            letter-spacing: -0.02em;
        }

        .banner-inner p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 0;
            line-height: 1.8;
        }

        /* ========== FAQ Filter ========== */
        .faq-filter {
            background: var(--white);
            border-bottom: 1px solid var(--border);
            padding: 20px 0;
        }

        .faq-tags-wrap {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            justify-content: center;
        }

        .tag-pill {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 22px;
            border-radius: 40px;
            background: var(--bg);
            border: 1px solid var(--border);
            font-size: 14px;
            font-weight: 600;
            color: var(--text-muted);
            transition: var(--transition);
        }

        .tag-pill:hover {
            border-color: var(--primary);
            color: var(--primary);
        }

        .tag-pill.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: 0 6px 16px rgba(45, 59, 143, 0.2);
        }

        /* ========== Section Common ========== */
        .section-head {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 44px;
        }

        .section-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            border-radius: 30px;
            background: var(--accent-light);
            color: var(--accent);
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 0.04em;
            margin-bottom: 14px;
        }

        .section-head h2 {
            font-size: 2rem;
            margin-bottom: 12px;
            color: var(--text);
        }

        .section-head p {
            color: var(--text-muted);
            font-size: 16px;
            margin-bottom: 0;
        }

        /* ========== Featured Cards ========== */
        .featured-section {
            padding: 84px 0;
            background: var(--bg);
        }

        .feature-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            height: 100%;
            transition: var(--transition);
        }

        .feature-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(14, 165, 160, 0.4);
        }

        .feature-card-media {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
        }

        .feature-card-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .feature-card:hover .feature-card-media img {
            transform: scale(1.05);
        }

        .feature-card-badge {
            position: absolute;
            top: 16px;
            left: 16px;
            background: rgba(255, 255, 255, 0.92);
            color: var(--primary);
            padding: 5px 14px;
            border-radius: 30px;
            font-size: 13px;
            font-weight: 700;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
        }

        .feature-card-body {
            padding: 24px 26px;
            display: flex;
            flex-direction: column;
            gap: 12px;
            flex: 1;
        }

        .feature-card-body h3 {
            font-size: 18px;
            line-height: 1.45;
            margin-bottom: 4px;
        }

        .feature-card-body p {
            color: var(--text-muted);
            font-size: 14.5px;
            line-height: 1.8;
            margin-bottom: 8px;
            flex: 1;
        }

        .card-meta {
            display: flex;
            gap: 18px;
            border-top: 1px solid var(--border);
            padding-top: 14px;
            color: var(--text-muted);
            font-size: 13px;
        }

        .card-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        /* ========== Detail FAQ ========== */
        .detail-section {
            padding: 84px 0;
            background: var(--white);
        }

        .faq-group-card {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 26px;
            height: 100%;
            transition: var(--transition);
        }

        .faq-group-card:hover {
            border-color: rgba(14, 165, 160, 0.35);
            box-shadow: var(--shadow);
        }

        .faq-group-title {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            margin-bottom: 20px;
        }

        .group-icon {
            width: 46px;
            height: 46px;
            border-radius: 14px;
            background: var(--accent-light);
            color: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 19px;
            flex-shrink: 0;
        }

        .faq-group-title h3 {
            font-size: 18px;
            margin-bottom: 2px;
        }

        .faq-group-title p {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        .faq-qa-item {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: 12px;
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color 0.25s;
        }

        .faq-qa-item.open {
            border-color: var(--accent);
            box-shadow: 0 4px 16px rgba(14, 165, 160, 0.1);
        }

        .faq-qa-header {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 14px;
            background: transparent;
            border: none;
            padding: 16px 16px;
            font-size: 15px;
            font-weight: 600;
            text-align: left;
            color: var(--text);
            transition: background 0.2s;
        }

        .faq-qa-header:hover {
            background: #f0f4ff;
        }

        .faq-qa-header .toggle-icon {
            flex-shrink: 0;
            color: var(--accent);
            transition: transform 0.3s ease;
        }

        .faq-qa-item.open .faq-qa-header .toggle-icon {
            transform: rotate(180deg);
        }

        .faq-qa-body {
            display: none;
            padding: 0 18px 18px;
            color: var(--text-muted);
            font-size: 14.5px;
            line-height: 1.85;
            border-top: 1px solid var(--border);
            margin-top: 0;
        }

        .faq-qa-item.open .faq-qa-body {
            display: block;
        }

        /* ========== Steps ========== */
        .steps-section {
            padding: 84px 0;
            background: var(--bg);
        }

        .step-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 34px 26px;
            text-align: center;
            height: 100%;
            box-shadow: var(--shadow);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .step-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-hover);
        }

        .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--accent);
            color: #fff;
            font-weight: 700;
            font-size: 17px;
            margin-bottom: 22px;
        }

        .step-icon {
            font-size: 40px;
            color: var(--primary);
            margin-bottom: 18px;
            display: block;
        }

        .step-card h3 {
            font-size: 18px;
            margin-bottom: 12px;
        }

        .step-card p {
            color: var(--text-muted);
            font-size: 14.5px;
            margin-bottom: 0;
            line-height: 1.8;
        }

        /* ========== Stats ========== */
        .stats-section {
            position: relative;
            padding: 90px 0;
            background: linear-gradient(135deg, rgba(18, 31, 87, 0.94), rgba(14, 165, 160, 0.82)), url('/assets/images/backpic/back-3.png') center/cover;
            color: #fff;
        }

        .stats-grid {
            row-gap: 40px;
        }

        .stat-item {
            text-align: center;
        }

        .stat-item strong {
            display: block;
            font-size: 2.5rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 6px;
            letter-spacing: -0.02em;
        }

        .stat-item span {
            color: rgba(255, 255, 255, 0.78);
            font-size: 15px;
        }

        /* ========== CTA ========== */
        .cta-section {
            padding: 84px 0;
            background: var(--bg);
        }

        .cta-box {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: 28px;
            box-shadow: var(--shadow);
            padding: 48px 56px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 40px;
            flex-wrap: wrap;
            position: relative;
            overflow: hidden;
        }

        .cta-box::after {
            content: "";
            position: absolute;
            right: -60px;
            top: -60px;
            width: 180px;
            height: 180px;
            background: var(--accent-light);
            border-radius: 50%;
        }

        .cta-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            border-radius: 30px;
            background: var(--accent-light);
            color: var(--accent);
            font-size: 13px;
            font-weight: 700;
            margin-bottom: 14px;
        }

        .cta-box h2 {
            font-size: 26px;
            margin-bottom: 10px;
            position: relative;
            z-index: 1;
        }

        .cta-box p {
            color: var(--text-muted);
            margin-bottom: 0;
            max-width: 440px;
            position: relative;
            z-index: 1;
        }

        .cta-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            position: relative;
            z-index: 2;
        }

        .btn-primary,
        .btn-ghost {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 30px;
            border-radius: 50px;
            font-size: 15px;
            font-weight: 600;
            transition: var(--transition);
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 8px 20px rgba(45, 59, 143, 0.25);
        }

        .btn-primary:hover {
            background: var(--accent);
            color: #fff;
            transform: translateY(-3px);
        }

        .btn-ghost {
            background: transparent;
            color: var(--primary);
            border: 1px solid var(--border);
        }

        .btn-ghost:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: #f0f4ff;
            transform: translateY(-3px);
        }

        /* ========== Footer ========== */
        .site-footer {
            background: #0f1530;
            color: #aeb2cd;
            padding: 60px 0 26px;
        }

        .footer-top {
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
            gap: 40px;
            flex-wrap: wrap;
            padding-bottom: 34px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-brand {
            max-width: 360px;
        }

        .footer-brand .brand-name {
            color: #fff;
            font-size: 20px;
            font-weight: 800;
            margin-bottom: 12px;
            display: block;
        }

        .footer-brand p {
            color: #9aa0bd;
            font-size: 14.5px;
            margin-bottom: 0;
            line-height: 1.8;
        }

        .footer-nav {
            display: flex;
            gap: 28px;
            flex-wrap: wrap;
            padding-top: 6px;
        }

        .footer-nav a {
            color: #aeb2cd;
            font-size: 15px;
            font-weight: 500;
        }

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

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            padding-top: 24px;
            color: #d3d6e5;
            font-size: 14px;
        }

        .footer-bottom p {
            margin-bottom: 0;
        }

        /* ========== Responsive ========== */
        @media (max-width: 1024px) {
            .banner-inner h1 {
                font-size: 2.2rem;
            }

            .search-box input {
                width: 140px;
            }

            .nav-tabs a {
                padding: 13px 16px;
                font-size: 14px;
            }

            .cta-box {
                padding: 40px 34px;
            }
        }

        @media (max-width: 768px) {
            .header-top-inner {
                flex-direction: column;
                align-items: center;
                padding: 14px 0;
            }

            .header-actions {
                width: 100%;
                justify-content: center;
            }

            .search-box {
                flex: 1;
                max-width: 320px;
            }

            .search-box input {
                width: 100%;
            }

            .nav-tabs {
                justify-content: flex-start;
            }

            .nav-tabs a {
                padding: 12px 15px;
                font-size: 13.5px;
            }

            .page-banner {
                padding: 76px 0 64px;
            }

            .banner-inner h1 {
                font-size: 1.9rem;
            }

            .featured-section {
                padding: 64px 0;
            }

            .feature-card {
                margin-bottom: 24px;
            }

            .featured-grid .cell {
                margin-bottom: 0;
            }

            .detail-section {
                padding: 64px 0;
            }

            .faq-group-card {
                margin-bottom: 24px;
            }

            .steps-section {
                padding: 64px 0;
            }

            .step-card {
                margin-bottom: 24px;
            }

            .stats-section {
                padding: 60px 0;
            }

            .stat-item {
                margin-bottom: 20px;
            }

            .stat-item strong {
                font-size: 1.8rem;
            }

            .cta-section {
                padding: 64px 0;
            }

            .cta-box {
                flex-direction: column;
                text-align: center;
                padding: 36px 24px;
            }

            .cta-actions {
                justify-content: center;
            }

            .footer-top {
                flex-direction: column;
            }

            .footer-nav {
                gap: 16px;
            }
        }

        @media (max-width: 520px) {
            body {
                font-size: 15px;
            }

            .brand a {
                font-size: 18px;
            }

            .header-actions {
                gap: 8px;
            }

            .header-login-btn {
                padding: 9px 16px;
                font-size: 13px;
            }

            .search-box input {
                width: 100%;
            }

            .banner-inner h1 {
                font-size: 1.6rem;
            }

            .banner-inner p {
                font-size: 15px;
            }

            .section-head h2 {
                font-size: 1.55rem;
            }

            .faq-tags-wrap {
                gap: 8px;
            }

            .tag-pill {
                padding: 8px 16px;
                font-size: 13px;
            }

            .feature-card-body {
                padding: 20px;
            }

            .faq-group-card {
                padding: 18px;
            }

            .faq-qa-header {
                font-size: 14px;
                padding: 14px 12px;
            }

            .cta-box h2 {
                font-size: 1.4rem;
            }

            .btn-primary,
            .btn-ghost {
                width: 100%;
                justify-content: center;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }