/* roulang page: index */
/* ========== 设计变量 ========== */
        :root {
            --primary: #0e7c86;
            --primary-dark: #0a5c64;
            --primary-soft: #e0f2f4;
            --accent: #20b2a0;
            --accent-soft: #e6f8f5;
            --warning: #f59e0b;
            --warning-soft: #fef3c7;
            --danger: #ef4444;
            --bg-light: #f8fafc;
            --bg-white: #ffffff;
            --text-main: #1e293b;
            --text-muted: #64748b;
            --text-soft: #94a3b8;
            --border: #e2e8f0;
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 8px;
            --shadow-sm: 0 2px 12px rgba(15, 23, 42, .06);
            --shadow: 0 6px 28px rgba(14, 124, 134, .08);
            --shadow-lg: 0 12px 48px rgba(14, 124, 134, .14);
            --header-h: 72px;
            --section-gap: 96px;
            --content-width: 1200px;
        }

        /* ========== Reset / Base ========== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

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

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", Arial, sans-serif;
            font-size: 16px;
            line-height: 1.65;
            color: var(--text-main);
            background: var(--bg-light);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color .25s, background-color .25s, border-color .25s, box-shadow .25s, transform .25s, opacity .25s;
        }

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

        ul,
        ol {
            list-style: none;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            border: none;
            outline: none;
            background: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.25;
            font-weight: 700;
            color: var(--text-main);
        }

        /* ========== 容器 ========== */
        .container {
            max-width: var(--content-width);
            margin: 0 auto;
            padding: 0 32px;
        }

        .section {
            padding: var(--section-gap) 0;
        }

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

        .section-head {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 56px;
        }

        .section-head .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: .08em;
            text-transform: uppercase;
            color: var(--primary);
            background: var(--primary-soft);
            padding: 6px 18px;
            border-radius: 999px;
            margin-bottom: 14px;
        }

        .section-head h2 {
            font-size: 34px;
            color: var(--text-main);
            letter-spacing: -.02em;
            margin-bottom: 14px;
        }

        .section-head p {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* ========== 导航 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            height: var(--header-h);
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(226, 232, 240, .7);
            transition: box-shadow .3s;
        }

        .site-header.is-scrolled {
            box-shadow: 0 6px 30px rgba(15, 23, 42, .06);
        }

        .site-header .container {
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            letter-spacing: -.01em;
            color: var(--text-main);
            white-space: nowrap;
        }

        .brand-icon {
            width: 38px;
            height: 38px;
            border-radius: 11px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            box-shadow: 0 6px 16px rgba(14, 124, 134, .28);
        }

        .main-nav-list {
            display: flex;
            align-items: center;
            gap: 6px;
            margin: 0;
            padding: 0;
            list-style: none;
        }

        .main-nav-list>li>a {
            display: block;
            padding: 10px 18px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-muted);
            white-space: nowrap;
            transition: color .25s, background .25s;
        }

        .main-nav-list>li>a:hover,
        .main-nav-list>li>a:focus {
            color: var(--primary);
            background: var(--primary-soft);
        }

        .main-nav-list>li>a.active {
            color: #fff;
            background: var(--primary);
            box-shadow: 0 4px 14px rgba(14, 124, 134, .3);
        }

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

        .header-search {
            position: relative;
            display: none;
        }

        .header-search input {
            width: 180px;
            height: 38px;
            padding: 0 38px 0 16px;
            border: 1px solid var(--border);
            border-radius: 999px;
            background: var(--bg-white);
            font-size: 14px;
            color: var(--text-main);
            transition: border-color .3s, box-shadow .3s;
        }

        .header-search input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(14, 124, 134, .12);
        }

        .header-search i {
            position: absolute;
            right: 14px;
            top: 50%;
            transform: translateY(-50%);
            font-size: 14px;
            color: var(--text-soft);
            pointer-events: none;
        }

        .menu-toggle {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: 12px;
            border: 1px solid var(--border);
            background: var(--bg-white);
            color: var(--text-main);
            font-size: 18px;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: background .25s, color .25s;
        }

        .menu-toggle:hover {
            background: var(--primary);
            color: #fff;
        }

        /* ========== Hero 首屏 ========== */
        .hero {
            position: relative;
            overflow: hidden;
            background:
                linear-gradient(135deg, rgba(10, 92, 100, .94) 0%, rgba(14, 124, 134, .88) 55%, rgba(32, 178, 160, .74) 100%),
                url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            padding: 110px 0 120px;
            color: #fff;
        }

        .hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 80% 20%, rgba(255, 255, 255, .08), transparent 50%);
            pointer-events: none;
        }

        .hero-inner {
            display: grid;
            grid-template-columns: 1.15fr .85fr;
            gap: 60px;
            align-items: center;
            position: relative;
            z-index: 2;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: .06em;
            color: #fff;
            background: rgba(255, 255, 255, .14);
            border: 1px solid rgba(255, 255, 255, .25);
            border-radius: 999px;
            padding: 7px 18px;
            margin-bottom: 26px;
            backdrop-filter: blur(6px);
        }

        .hero-badge i {
            font-size: 12px;
            color: #7ef0d8;
        }

        .hero h1 {
            font-size: 52px;
            font-weight: 800;
            line-height: 1.14;
            letter-spacing: -.03em;
            color: #fff;
            margin-bottom: 22px;
        }

        .hero-desc {
            font-size: 17px;
            line-height: 1.8;
            color: rgba(255, 255, 255, .88);
            max-width: 520px;
            margin-bottom: 34px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 40px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 13px 30px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: transform .25s, box-shadow .25s, background .25s, color .25s, border-color .25s;
        }

        .btn-primary {
            background: #fff;
            color: var(--primary-dark);
            box-shadow: 0 8px 24px rgba(0, 0, 0, .14);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 14px 32px rgba(0, 0, 0, .2);
        }

        .btn-ghost-light {
            background: transparent;
            color: #fff;
            border: 1.5px solid rgba(255, 255, 255, .55);
        }

        .btn-ghost-light:hover {
            background: rgba(255, 255, 255, .14);
            border-color: #fff;
            transform: translateY(-2px);
        }

        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 22px;
            color: rgba(255, 255, 255, .75);
            font-size: 14px;
        }

        .hero-meta span {
            display: inline-flex;
            align-items: center;
            gap: 7px;
        }

        .hero-meta i {
            color: #7ef0d8;
            font-size: 13px;
        }

        .hero-visual {
            position: relative;
            z-index: 2;
            border-radius: 24px;
            overflow: hidden;
            box-shadow: 0 30px 70px rgba(0, 0, 0, .28);
            border: 1px solid rgba(255, 255, 255, .22);
        }

        .hero-visual img {
            width: 100%;
            height: 100%;
            min-height: 380px;
            object-fit: cover;
        }

        .hero-visual .visual-caption {
            position: absolute;
            left: 18px;
            right: 18px;
            bottom: 18px;
            background: rgba(10, 40, 45, .72);
            backdrop-filter: blur(8px);
            border-radius: 14px;
            padding: 14px 20px;
            color: #fff;
            font-size: 14px;
            border: 1px solid rgba(255, 255, 255, .14);
        }

        .hero-visual .visual-caption strong {
            display: block;
            font-size: 15px;
            margin-bottom: 2px;
        }

        /* ========== 数据统计 ========== */
        .stats {
            margin-top: -56px;
            position: relative;
            z-index: 5;
        }

        .stats-grid {
            background: var(--bg-white);
            border-radius: 18px;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border);
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            overflow: hidden;
        }

        .stat-item {
            padding: 34px 28px;
            text-align: center;
            border-right: 1px solid var(--border);
        }

        .stat-item:last-child {
            border-right: none;
        }

        .stat-num {
            font-size: 38px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -.02em;
            line-height: 1.1;
        }

        .stat-num sup {
            font-size: 20px;
            font-weight: 700;
        }

        .stat-label {
            font-size: 14px;
            color: var(--text-muted);
            margin-top: 8px;
        }

        /* ========== 平台概览 ========== */
        .overview {
            padding: var(--section-gap) 0;
        }

        .overview-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 64px;
            align-items: center;
        }

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

        .overview-media img {
            width: 100%;
            min-height: 320px;
        }

        .overview-media::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 55%, rgba(14, 124, 134, .18));
        }

        .overview-content h2 {
            font-size: 32px;
            margin-bottom: 18px;
            letter-spacing: -.02em;
        }

        .overview-content p {
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 16px;
        }

        .overview-list {
            margin-top: 22px;
            display: grid;
            gap: 14px;
        }

        .overview-list li {
            display: flex;
            gap: 14px;
            align-items: flex-start;
            padding: 14px 18px;
            background: var(--bg-light);
            border-radius: 12px;
            border: 1px solid var(--border);
            transition: transform .25s, box-shadow .25s, border-color .25s;
        }

        .overview-list li:hover {
            transform: translateX(4px);
            box-shadow: var(--shadow-sm);
            border-color: var(--primary);
        }

        .overview-list .list-icon {
            flex: none;
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--primary-soft);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
        }

        .overview-list .list-text {
            font-size: 15px;
            line-height: 1.55;
            color: var(--text-main);
        }

        /* ========== 分类入口 ========== */
        .categories {
            background: linear-gradient(180deg, var(--bg-white), var(--bg-light));
            padding: var(--section-gap) 0;
        }

        .category-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .category-card {
            position: relative;
            display: block;
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: 18px;
            overflow: hidden;
            transition: transform .3s, box-shadow .3s;
            box-shadow: var(--shadow-sm);
        }

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

        .category-card .card-img {
            position: relative;
            height: 190px;
            overflow: hidden;
        }

        .category-card .card-img img {
            width: 100%;
            height: 100%;
            transition: transform .5s ease;
        }

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

        .category-card .card-img::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 35%, rgba(14, 124, 134, .35));
        }

        .category-card .card-body {
            padding: 24px 24px 28px;
        }

        .category-card .card-cat {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-soft);
            padding: 4px 14px;
            border-radius: 999px;
            margin-bottom: 12px;
        }

        .category-card h3 {
            font-size: 20px;
            margin-bottom: 10px;
        }

        .category-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.65;
        }

        .category-card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            margin-top: 16px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
        }

        .category-card:hover .card-link {
            gap: 12px;
        }

        /* ========== 特色功能 ========== */
        .features {
            padding: var(--section-gap) 0;
            background: var(--bg-white);
        }

        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .feature-card {
            padding: 30px 28px;
            border-radius: 16px;
            background: var(--bg-light);
            border: 1px solid var(--border);
            transition: transform .3s, box-shadow .3s, border-color .3s;
        }

        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow);
            border-color: rgba(14, 124, 134, .35);
            background: var(--bg-white);
        }

        .feature-icon {
            width: 54px;
            height: 54px;
            border-radius: 15px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 20px;
            box-shadow: 0 8px 24px rgba(14, 124, 134, .3);
        }

        .feature-card h3 {
            font-size: 18px;
            margin-bottom: 10px;
        }

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

        /* ========== 最新信息 ========== */
        .news-section {
            padding: var(--section-gap) 0;
        }

        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .news-card {
            display: flex;
            flex-direction: column;
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 26px 26px 28px;
            transition: transform .3s, box-shadow .3s, border-color .3s;
        }

        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow);
            border-color: rgba(14, 124, 134, .3);
        }

        .news-card .news-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 14px;
        }

        .news-card .news-cat {
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-soft);
            padding: 4px 14px;
            border-radius: 999px;
        }

        .news-card .news-time {
            font-size: 13px;
            color: var(--text-soft);
        }

        .news-card h3 {
            font-size: 17px;
            line-height: 1.45;
            margin-bottom: 10px;
        }

        .news-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            flex: 1;
        }

        .news-card .news-more {
            margin-top: 18px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .empty-tip {
            grid-column: 1 / -1;
            text-align: center;
            padding: 52px 20px;
            color: var(--text-muted);
            background: var(--bg-white);
            border: 1px dashed var(--border);
            border-radius: 16px;
            font-size: 15px;
        }

        /* ========== 使用流程 ========== */
        .process {
            padding: var(--section-gap) 0;
            background: linear-gradient(180deg, var(--bg-light), var(--bg-white));
        }

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

        .process-steps::before {
            content: '';
            position: absolute;
            top: 38px;
            left: 10%;
            right: 10%;
            height: 2px;
            background: linear-gradient(90deg, var(--primary-soft), var(--accent), var(--primary-soft));
            opacity: .5;
            z-index: 0;
        }

        .process-step {
            position: relative;
            z-index: 1;
            text-align: center;
            padding: 18px 16px 24px;
        }

        .step-num {
            width: 76px;
            height: 76px;
            margin: 0 auto 18px;
            border-radius: 24px;
            background: var(--bg-white);
            border: 1.5px solid var(--primary);
            box-shadow: var(--shadow-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            font-weight: 800;
            color: var(--primary);
            transition: transform .3s, box-shadow .3s, background .3s, color .3s;
        }

        .process-step:hover .step-num {
            background: var(--primary);
            color: #fff;
            transform: translateY(-4px);
            box-shadow: 0 12px 28px rgba(14, 124, 134, .3);
        }

        .process-step h3 {
            font-size: 17px;
            margin-bottom: 8px;
        }

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

        /* ========== FAQ ========== */
        .faq-section {
            padding: var(--section-gap) 0;
            background: var(--bg-white);
        }

        .faq-list {
            max-width: 860px;
            margin: 0 auto;
            display: grid;
            gap: 16px;
        }

        .faq-item {
            background: var(--bg-light);
            border: 1px solid var(--border);
            border-radius: 14px;
            overflow: hidden;
            transition: border-color .3s, box-shadow .3s;
        }

        .faq-item.is-open {
            border-color: rgba(14, 124, 134, .4);
            box-shadow: var(--shadow-sm);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 18px;
            padding: 20px 24px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
        }

        .faq-question i {
            font-size: 14px;
            color: var(--primary);
            transition: transform .3s;
            flex: none;
        }

        .faq-item.is-open .faq-question i {
            transform: rotate(180deg);
        }

        .faq-answer {
            padding: 0 24px;
            max-height: 0;
            overflow: hidden;
            transition: max-height .4s ease, padding .4s ease;
        }

        .faq-answer-inner {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.75;
            padding-bottom: 22px;
            border-top: 1px solid var(--border);
            padding-top: 16px;
        }

        /* ========== CTA ========== */
        .cta-section {
            position: relative;
            padding: 88px 0;
            background:
                linear-gradient(135deg, rgba(10, 92, 100, .96), rgba(14, 124, 134, .9)),
                url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            text-align: center;
            color: #fff;
        }

        .cta-section h2 {
            font-size: 34px;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: -.02em;
        }

        .cta-section p {
            font-size: 16px;
            color: rgba(255, 255, 255, .88);
            max-width: 560px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }

        .cta-actions {
            display: flex;
            justify-content: center;
            gap: 14px;
            flex-wrap: wrap;
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: #0f1c1d;
            color: rgba(255, 255, 255, .75);
            padding: 64px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 48px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255, 255, 255, .08);
        }

        .footer-brand .brand {
            color: #fff;
            margin-bottom: 14px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, .55);
            margin-top: 14px;
        }

        .footer-col h4 {
            font-size: 15px;
            color: #fff;
            margin-bottom: 18px;
            font-weight: 600;
        }

        .footer-col ul {
            display: grid;
            gap: 10px;
        }

        .footer-col a {
            font-size: 14px;
            color: rgba(255, 255, 255, .58);
            transition: color .25s, padding-left .25s;
        }

        .footer-col a:hover {
            color: #fff;
            padding-left: 4px;
        }

        .footer-contact li {
            display: flex;
            gap: 10px;
            align-items: center;
            font-size: 14px;
            color: rgba(255, 255, 255, .58);
            margin-bottom: 10px;
        }

        .footer-contact i {
            color: var(--accent);
            width: 18px;
        }

        .footer-bottom {
            padding: 22px 0;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, .4);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, .55);
        }

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

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            :root {
                --section-gap: 72px;
            }

            .hero {
                padding: 80px 0 100px;
            }

            .hero h1 {
                font-size: 40px;
            }

            .hero-inner {
                grid-template-columns: 1fr;
                gap: 44px;
            }

            .hero-visual {
                max-width: 620px;
                margin: 0 auto;
                width: 100%;
            }

            .overview-grid {
                grid-template-columns: 1fr;
                gap: 44px;
            }

            .feature-grid,
            .category-grid,
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .process-steps {
                grid-template-columns: repeat(2, 1fr);
                gap: 30px 20px;
            }

            .process-steps::before {
                display: none;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 40px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-gap: 56px;
                --header-h: 62px;
            }

            .container {
                padding: 0 20px;
            }

            .brand {
                font-size: 17px;
            }

            .brand-icon {
                width: 34px;
                height: 34px;
                font-size: 14px;
            }

            .main-nav {
                position: absolute;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: var(--bg-white);
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-lg);
                padding: 12px 20px 20px;
                display: none;
                z-index: 99;
                border-radius: 0 0 16px 16px;
            }

            .main-nav.is-open {
                display: block;
            }

            .main-nav-list {
                flex-direction: column;
                align-items: stretch;
                gap: 6px;
            }

            .main-nav-list>li>a {
                padding: 13px 18px;
                border-radius: 12px;
            }

            .header-actions {
                margin-left: auto;
            }

            .menu-toggle {
                display: flex;
            }

            .header-search {
                display: none;
            }

            .hero {
                padding: 64px 0 90px;
            }

            .hero h1 {
                font-size: 32px;
            }

            .hero-desc {
                font-size: 15px;
            }

            .hero-meta {
                gap: 14px;
                font-size: 13px;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .stat-item:nth-child(2) {
                border-right: none;
            }

            .stat-item:nth-child(n + 3) {
                border-top: 1px solid var(--border);
            }

            .stat-num {
                font-size: 30px;
            }

            .section-head h2,
            .overview-content h2,
            .cta-section h2 {
                font-size: 26px;
            }

            .feature-grid,
            .category-grid,
            .news-grid {
                grid-template-columns: 1fr;
            }

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

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

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

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }

            .btn {
                width: 100%;
                text-align: center;
            }

            .cta-actions {
                flex-direction: column;
                align-items: stretch;
            }

            .stat-num {
                font-size: 26px;
            }
        }

        /* 焦点状态 */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 3px solid rgba(14, 124, 134, .4);
            outline-offset: 2px;
            border-radius: 6px;
        }

        ::selection {
            background: var(--primary);
            color: #fff;
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0f5e8a;
            --primary-light: #2a86b8;
            --primary-dark: #0a3d5c;
            --accent: #14b8a6;
            --accent-light: #5eead4;
            --bg-body: #f5f7fa;
            --bg-white: #ffffff;
            --bg-light: #eef4f8;
            --bg-dark: #0b2b3f;
            --text-main: #1e293b;
            --text-muted: #64748b;
            --text-light: #f8fafc;
            --border: #dce4ec;
            --border-light: #e9eef3;
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-sm: 0 2px 8px rgba(15, 94, 138, 0.06);
            --shadow-md: 0 4px 16px rgba(15, 94, 138, 0.10);
            --shadow-lg: 0 12px 28px rgba(15, 94, 138, 0.14);
            --space-section: 80px;
            --transition: all 0.3s ease;
            --font-base: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        }

        /* ===== Reset / 基础 ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body { font-family: var(--font-base); color: var(--text-main); background: var(--bg-body); line-height: 1.7; -webkit-font-smoothing: antialiased; }
        img { max-width: 100%; height: auto; display: block; }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-light); }
        button, input, select, textarea { font-family: inherit; }
        ul, ol { list-style: none; }

        .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
        .section { padding: 80px 0; }
        .section-sm { padding: 50px 0; }
        .section-alt { background: var(--bg-light); }
        .text-center { text-align: center; }

        .section-head { margin-bottom: 44px; }
        .section-label { display: inline-block; color: var(--primary); font-weight: 600; font-size: 14px; letter-spacing: 2px; text-transform: uppercase; margin-bottom: 10px; background: rgba(15,94,138,0.08); padding: 6px 14px; border-radius: 20px; }
        .section-title { font-size: 32px; font-weight: 700; line-height: 1.3; color: var(--text-main); margin-bottom: 12px; }
        .section-desc { font-size: 16px; color: var(--text-muted); max-width: 640px; margin: 0 auto; }

        .section-title.light { color: var(--text-light); }
        .section-desc.light { color: rgba(248,250,252,0.75); }

        /* ===== 导航栏 ===== */
        .site-header {
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-light);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 1px 8px rgba(15,94,138,0.04);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            gap: 20px;
        }
        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .brand-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            box-shadow: 0 4px 12px rgba(15,94,138,0.3);
        }
        .brand span:last-child {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .main-nav {
            display: flex;
            align-items: center;
        }
        .main-nav-list {
            display: flex;
            gap: 4px;
        }
        .main-nav-list a {
            display: block;
            padding: 8px 18px;
            border-radius: 24px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-muted);
            white-space: nowrap;
            transition: var(--transition);
        }
        .main-nav-list a:hover {
            color: var(--primary);
            background: rgba(15,94,138,0.06);
        }
        .main-nav-list a.active {
            color: var(--primary);
            background: rgba(15,94,138,0.1);
            font-weight: 600;
        }
        .header-cta {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .btn-header {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            color: #fff !important;
            border: none;
            padding: 9px 22px;
            border-radius: 24px;
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 4px 14px rgba(15,94,138,0.25);
        }
        .btn-header:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 22px rgba(15,94,138,0.35);
        }
        .nav-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border: none;
            border-radius: 8px;
            background: var(--bg-light);
            color: var(--primary);
            font-size: 18px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }
        .nav-toggle:hover { background: rgba(15,94,138,0.15); }

        /* 移动端导航 */
        @media (max-width: 900px) {
            .nav-toggle { display: flex; }
            .main-nav {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: var(--bg-white);
                border-bottom: 1px solid var(--border-light);
                box-shadow: var(--shadow-md);
                padding: 16px 24px;
                flex-direction: column;
                align-items: flex-start;
            }
            .main-nav.open { display: block; }
            .main-nav-list { flex-direction: column; gap: 8px; width: 100%; }
            .main-nav-list a { padding: 12px 16px; border-radius: 10px; }
            .header-cta .btn-header { display: none; }
            .header-inner { height: 64px; }
        }
        @media (max-width: 520px) {
            .brand span:last-child { font-size: 15px; }
            .header-inner { padding: 0 16px; }
        }

        /* ===== 分屏 Hero ===== */
        .hero-split {
            display: grid;
            grid-template-columns: 1fr 1fr;
            min-height: 420px;
            align-items: center;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            position: relative;
            overflow: hidden;
        }
        .hero-split::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: 0.5;
            z-index: 0;
        }
        .hero-content {
            padding: 80px 48px;
            position: relative;
            z-index: 2;
            max-width: 100%;
            background: linear-gradient(90deg, rgba(255,255,255,0.95) 0%, rgba(255,255,255,0.8) 60%, rgba(255,255,255,0) 100%);
        }
        .hero-extra {
            padding: 80px 48px;
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            justify-content: flex-end;
        }
        .hero-badge {
            display: inline-block;
            background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
            color: #0b3f38;
            font-size: 13px;
            font-weight: 700;
            padding: 6px 16px;
            border-radius: 24px;
            margin-bottom: 16px;
            letter-spacing: 1px;
        }
        .hero-title {
            font-size: 36px;
            font-weight: 700;
            line-height: 1.25;
            margin-bottom: 16px;
            color: var(--text-main);
        }
        .hero-title span {
            color: var(--primary);
            position: relative;
        }
        .hero-sub {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 480px;
            margin-bottom: 28px;
        }
        .hero-btns {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .btn-primary {
            display: inline-block;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            color: #fff !important;
            padding: 12px 28px;
            border-radius: 26px;
            font-size: 15px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 4px 18px rgba(15,94,138,0.3);
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 28px rgba(15,94,138,0.4);
        }
        .btn-outline {
            display: inline-block;
            background: transparent;
            color: var(--primary) !important;
            padding: 12px 28px;
            border-radius: 26px;
            font-size: 15px;
            font-weight: 600;
            border: 2px solid var(--primary);
            cursor: pointer;
            transition: var(--transition);
        }
        .btn-outline:hover {
            background: rgba(15,94,138,0.08);
            transform: translateY(-2px);
            box-shadow: var(--shadow-sm);
        }
        .hero-visual {
            background: rgba(255,255,255,0.75);
            backdrop-filter: blur(8px);
            border-radius: var(--radius-lg);
            border: 1px solid rgba(255,255,255,0.6);
            box-shadow: var(--shadow-lg);
            padding: 30px;
            max-width: 320px;
            width: 100%;
            text-align: center;
            margin-right: 40px;
        }
        .hero-stats {
            display: flex;
            gap: 24px;
            justify-content: center;
            margin-bottom: 20px;
        }
        .stat-item h3 { font-size: 28px; font-weight: 700; color: var(--primary); line-height: 1.2; }
        .stat-item p { font-size: 13px; color: var(--text-muted); }
        .hero-img-box {
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
        }
        .hero-img-box img { width: 100%; height: 160px; object-fit: cover; }

        @media (max-width: 1024px) {
            .hero-split { grid-template-columns: 1fr; }
            .hero-content { padding: 60px 32px; }
            .hero-extra { padding: 20px 32px 60px; justify-content: center; }
            .hero-visual { margin-right: 0; }
        }
        @media (max-width: 520px) {
            .hero-title { font-size: 28px; }
            .hero-content { padding: 48px 20px; }
            .hero-extra { padding: 16px 20px 48px; }
            .hero-btns { flex-direction: column; width: 100%; }
            .btn-primary, .btn-outline { text-align: center; }
        }

        /* ===== 面包屑 ===== */
        .breadcrumb-wrap {
            padding: 18px 0;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
        }
        .breadcrumb-nav {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            font-size: 14px;
            color: var(--text-muted);
        }
        .breadcrumb-nav a {
            color: var(--primary);
            font-weight: 500;
        }
        .breadcrumb-nav a:hover { text-decoration: underline; }
        .breadcrumb-nav i { font-size: 11px; margin: 0 10px; color: var(--border); }
        .breadcrumb-nav .current { color: var(--text-muted); }

        /* ===== 操作流程 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .step-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            border: 1px solid var(--border-light);
            transition: var(--transition);
            position: relative;
            box-shadow: var(--shadow-sm);
        }
        .step-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: rgba(15,94,138,0.2);
        }
        .step-num {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
            box-shadow: 0 4px 10px rgba(15,94,138,0.2);
        }
        .step-card h3 { font-size: 17px; font-weight: 600; margin-bottom: 10px; color: var(--text-main); }
        .step-card p { font-size: 14px; color: var(--text-muted); line-height: 1.6; }
        @media (max-width: 1024px) {
            .steps-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 520px) {
            .steps-grid { grid-template-columns: 1fr; }
        }

        /* ===== 分类卡片 ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .category-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-light);
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .category-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .category-cover {
            height: 160px;
            overflow: hidden;
            position: relative;
        }
        .category-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .category-card:hover .category-cover img {
            transform: scale(1.05);
        }
        .category-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(255,255,255,0.92);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 5px 14px;
            border-radius: 20px;
            backdrop-filter: blur(4px);
            box-shadow: var(--shadow-sm);
        }
        .category-body {
            padding: 20px 22px 24px;
        }
        .category-body h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text-main);
        }
        .category-body p {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 14px;
            line-height: 1.6;
        }
        @media (max-width: 1024px) {
            .category-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 520px) {
            .category-grid { grid-template-columns: 1fr; }
        }

        /* ===== 详情内容区 ===== */
        .content-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 44px;
            align-items: center;
        }
        .content-block.reverse { direction: rtl; }
        .content-block.reverse > * { direction: ltr; }
        .content-image {
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border);
        }
        .content-image img { width: 100%; height: 260px; object-fit: cover; }
        .content-text .section-label { margin-bottom: 10px; }
        .content-text h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.3;
            margin-bottom: 14px;
        }
        .content-text p {
            color: var(--text-muted);
            font-size: 15px;
            margin-bottom: 16px;
            line-height: 1.8;
        }
        .content-list { margin-top: 8px; }
        .content-list li {
            display: flex;
            gap: 10px;
            align-items: flex-start;
            margin-bottom: 10px;
            font-size: 14px;
            color: var(--text-main);
        }
        .content-list li i {
            color: var(--accent);
            font-size: 14px;
            margin-top: 5px;
            width: 18px;
            flex-shrink: 0;
        }
        @media (max-width: 1024px) {
            .content-block { grid-template-columns: 1fr; gap: 28px; }
            .content-block.reverse { direction: ltr; }
            .content-block.reverse > * { direction: ltr; }
        }

        /* ===== 安全卡片 ===== */
        .security-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .security-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 30px 26px;
            border: 1px solid var(--border-light);
            text-align: center;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .security-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: rgba(15,94,138,0.2);
        }
        .security-icon {
            width: 56px;
            height: 56px;
            border-radius: 14px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 22px;
            color: #fff;
            box-shadow: 0 4px 14px rgba(15,94,138,0.25);
        }
        .security-card h3 { font-size: 17px; font-weight: 600; margin-bottom: 10px; }
        .security-card p { font-size: 14px; color: var(--text-muted); line-height: 1.7; }
        @media (max-width: 1024px) {
            .security-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 520px) {
            .security-grid { grid-template-columns: 1fr; }
        }

        /* ===== 徽章标签 ===== */
        .badge-list {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
        }
        .badge-item {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: 24px;
            padding: 10px 20px;
            font-size: 14px;
            color: var(--text-main);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .badge-item i { color: var(--primary); font-size: 14px; }
        .badge-item:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        /* ===== FAQ ===== */
        .faq-list { max-width: 800px; margin: 0 auto; }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .faq-item:hover { box-shadow: var(--shadow-md); border-color: rgba(15,94,138,0.18); }
        .faq-title {
            width: 100%;
            text-align: left;
            background: none;
            border: none;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            transition: var(--transition);
        }
        .faq-title i { font-size: 14px; color: var(--primary); transition: transform 0.3s ease; }
        .faq-title[aria-expanded="true"] i { transform: rotate(180deg); }
        .faq-body {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
        }
        .faq-body-inner {
            padding: 0 24px 20px;
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.75;
            border-top: 1px solid var(--border-light);
            padding-top: 14px;
            margin-top: 0;
        }

        /* ===== CTA ===== */
        .cta-box {
            background: linear-gradient(135deg, var(--bg-dark) 0%, var(--primary-dark) 100%);
            border-radius: var(--radius-lg);
            padding: 56px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }
        .cta-box::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.5;
            z-index: 1;
        }
        .cta-box > * { position: relative; z-index: 2; }
        .cta-box h2 { color: var(--text-light); font-size: 30px; font-weight: 700; margin-bottom: 12px; }
        .cta-box p { color: rgba(248,250,252,0.85); font-size: 16px; max-width: 520px; margin: 0 auto 28px; }
        .btn-white {
            display: inline-block;
            background: linear-gradient(135deg, #ffffff 0%, #f0f9ff 100%);
            color: var(--primary-dark) !important;
            padding: 13px 32px;
            border-radius: 26px;
            font-size: 15px;
            font-weight: 700;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 6px 20px rgba(0,0,0,0.15);
        }
        .btn-white:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(0,0,0,0.25);
        }
        @media (max-width: 520px) {
            .cta-box { padding: 40px 24px; }
            .cta-box h2 { font-size: 24px; }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(248,250,252,0.8);
            padding: 60px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 48px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }
        .footer-brand .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
        }
        .footer-brand .brand .brand-icon {
            background: linear-gradient(135deg, var(--primary-light) 0%, var(--accent) 100%);
        }
        .footer-brand .brand span:last-child {
            color: var(--text-light);
            font-size: 18px;
            font-weight: 700;
        }
        .footer-brand p { font-size: 14px; color: rgba(248,250,252,0.7); line-height: 1.7; margin-top: 10px; }
        .footer-col h4 {
            color: var(--text-light);
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 18px;
            letter-spacing: 0.5px;
        }
        .footer-col ul li { margin-bottom: 10px; }
        .footer-col ul li a {
            color: rgba(248,250,252,0.7);
            font-size: 14px;
            transition: var(--transition);
        }
        .footer-col ul li a:hover { color: #fff; padding-left: 4px; }
        .footer-contact li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: rgba(248,250,252,0.7);
        }
        .footer-contact li i { color: var(--accent); width: 18px; flex-shrink: 0; }
        .footer-bottom {
            padding: 22px 0;
            text-align: center;
            font-size: 13px;
            color: rgba(248,250,252,0.5);
        }
        @media (max-width: 1024px) {
            .footer-grid { grid-template-columns: repeat(2, 1fr); gap: 36px; }
        }
        @media (max-width: 520px) {
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .site-footer { padding-top: 40px; }
        }

        /* ===== 深色板块 ===== */
        .dark-section {
            background: var(--bg-dark);
            color: var(--text-light);
        }
        .dark-section .section-title { color: var(--text-light); }
        .dark-section .section-desc { color: rgba(248,250,252,0.7); }

        /* ===== 数据统计 ===== */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-box {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 28px 20px;
            text-align: center;
            border: 1px solid var(--border-light);
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .stat-box:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
        .stat-box .num { font-size: 32px; font-weight: 700; color: var(--primary); line-height: 1.2; }
        .stat-box .label { font-size: 14px; color: var(--text-muted); margin-top: 8px; }
        @media (max-width: 1024px) {
            .stats-row { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 520px) {
            .stats-row { grid-template-columns: 1fr; }
        }

        /* ===== 表格 ===== */
        .data-table-wrap {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            overflow-x: auto;
        }
        .data-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 14px;
            min-width: 600px;
        }
        .data-table th {
            background: var(--bg-light);
            color: var(--primary);
            font-weight: 600;
            text-align: left;
            padding: 14px 20px;
            border-bottom: 2px solid var(--border);
            font-size: 13px;
            letter-spacing: 0.5px;
        }
        .data-table td {
            padding: 13px 20px;
            border-bottom: 1px solid var(--border-light);
            color: var(--text-muted);
        }
        .data-table tr:last-child td { border-bottom: none; }
        .data-table tr:hover td { background: rgba(15,94,138,0.03); }

        /* ===== 焦点状态 ===== */
        a:focus-visible, button:focus-visible {
            outline: 3px solid rgba(42,134,184,0.5);
            outline-offset: 2px;
            border-radius: 4px;
        }

/* roulang page: category2 */
:root {
            --primary: #0f766e;
            --primary-dark: #115e59;
            --primary-light: #14b8a6;
            --accent: #0ea5e9;
            --accent-soft: #e0f2fe;
            --bg: #f8fafc;
            --bg-alt: #f0fdfa;
            --white: #ffffff;
            --text: #1e293b;
            --text-weak: #64748b;
            --border: #e2e8f0;
            --border-strong: #cbd5e1;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow-sm: 0 2px 8px rgba(15, 118, 110, 0.06);
            --shadow-md: 0 6px 24px rgba(15, 118, 110, 0.10);
            --shadow-lg: 0 12px 40px rgba(15, 118, 110, 0.14);
            --space-section: 90px;
            --transition: all 0.3s ease;
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
            color: var(--text);
            background: var(--bg);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

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

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

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }

        ul,
        ol {
            list-style: none;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: var(--space-section) 0;
        }

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

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

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

        .section-label {
            display: inline-block;
            background: var(--accent-soft);
            color: var(--primary-dark);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.5px;
            padding: 6px 16px;
            border-radius: 30px;
            margin-bottom: 14px;
            text-transform: uppercase;
        }

        .section-title {
            font-size: 32px;
            font-weight: 800;
            line-height: 1.3;
            color: var(--text);
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--text-weak);
            max-width: 680px;
            margin: 0 auto 40px;
            line-height: 1.8;
        }

        .text-center .section-subtitle {
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== Header & Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .brand-icon {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--white);
            font-size: 18px;
            box-shadow: 0 4px 12px rgba(15, 118, 110, 0.3);
        }

        .brand span {
            font-size: 19px;
            font-weight: 800;
            color: var(--text);
            letter-spacing: -0.3px;
        }

        .main-nav-list {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .main-nav-list li a {
            display: block;
            padding: 10px 16px;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-weak);
            transition: var(--transition);
        }

        .main-nav-list li a:hover {
            color: var(--primary);
            background: rgba(15, 118, 110, 0.08);
        }

        .main-nav-list li a.active {
            color: var(--primary-dark);
            background: rgba(15, 118, 110, 0.10);
            font-weight: 600;
        }

        .header-cta {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-shrink: 0;
        }

        .header-search {
            display: flex;
            align-items: center;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 30px;
            padding: 6px 6px 6px 16px;
            transition: var(--transition);
        }

        .header-search:focus-within {
            border-color: var(--primary-light);
            box-shadow: 0 0 0 3px rgba(20, 184, 166, 0.15);
        }

        .header-search input {
            background: transparent;
            border: none;
            width: 140px;
            font-size: 13px;
            color: var(--text);
        }

        .header-search input::placeholder {
            color: var(--text-weak);
        }

        .header-search button {
            background: var(--primary);
            color: var(--white);
            width: 32px;
            height: 32px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition);
        }

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

        .nav-toggle {
            display: none;
            background: transparent;
            border: 1px solid var(--border);
            border-radius: 10px;
            width: 42px;
            height: 42px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            color: var(--text);
            font-size: 18px;
        }

        .nav-toggle:hover {
            background: var(--bg);
        }

        /* ===== Hero Banner ===== */
        .page-banner {
            position: relative;
            padding: 90px 0 70px;
            background:
                linear-gradient(135deg, rgba(15, 118, 110, 0.92) 0%, rgba(14, 165, 233, 0.82) 100%),
                url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            color: var(--white);
            overflow: hidden;
        }

        .page-banner::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -40px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
        }

        .page-banner::after {
            content: '';
            position: absolute;
            bottom: -80px;
            left: 10%;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.05);
        }

        .banner-content {
            position: relative;
            z-index: 2;
        }

        .banner-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.15);
            border: 1px solid rgba(255, 255, 255, 0.25);
            padding: 8px 20px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 500;
            margin-bottom: 22px;
            backdrop-filter: blur(8px);
        }

        .banner-badge i {
            font-size: 14px;
        }

        .banner-title {
            font-size: 42px;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 18px;
            text-shadow: 0 2px 16px rgba(0, 0, 0, 0.12);
        }

        .banner-desc {
            font-size: 17px;
            line-height: 1.9;
            max-width: 720px;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 28px;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 30px;
            border-radius: 12px;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            border: none;
        }

        .btn-primary {
            background: var(--white);
            color: var(--primary-dark);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
        }

        .btn-outline-light {
            background: transparent;
            color: var(--white);
            border: 2px solid rgba(255, 255, 255, 0.7);
        }

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

        .btn-lg {
            padding: 16px 36px;
            font-size: 16px;
        }

        .banner-stats {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 50px;
            position: relative;
            z-index: 2;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.18);
            border-radius: var(--radius);
            padding: 30px;
            backdrop-filter: blur(12px);
        }

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

        .banner-stat .value {
            font-size: 32px;
            font-weight: 800;
            display: block;
            line-height: 1.2;
        }

        .banner-stat .label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.8);
            margin-top: 6px;
            display: block;
        }

        /* ===== Feature Cards ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 10px;
        }

        .feature-card {
            background: var(--white);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            padding: 32px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.4s ease;
        }

        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: var(--primary-light);
        }

        .feature-card:hover::before {
            transform: scaleX(1);
        }

        .feature-icon {
            width: 58px;
            height: 58px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: var(--white);
            margin-bottom: 20px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            box-shadow: 0 8px 20px rgba(15, 118, 110, 0.25);
        }

        .feature-icon.blue {
            background: linear-gradient(135deg, var(--accent), #38bdf8);
            box-shadow: 0 8px 20px rgba(14, 165, 233, 0.25);
        }

        .feature-icon.orange {
            background: linear-gradient(135deg, #f59e0b, #fbbf24);
            box-shadow: 0 8px 20px rgba(245, 158, 11, 0.25);
        }

        .feature-icon.green {
            background: linear-gradient(135deg, #10b981, #34d399);
            box-shadow: 0 8px 20px rgba(16, 185, 129, 0.25);
        }

        .feature-icon.purple {
            background: linear-gradient(135deg, #8b5cf6, #a78bfa);
            box-shadow: 0 8px 20px rgba(139, 92, 246, 0.25);
        }

        .feature-icon.red {
            background: linear-gradient(135deg, #ef4444, #f87171);
            box-shadow: 0 8px 20px rgba(239, 68, 68, 0.25);
        }

        .feature-card h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 10px;
        }

        .feature-card p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.8;
        }

        /* ===== Security Tier Section ===== */
        .tier-section {
            background: var(--white);
        }

        .tier-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        .tier-image {
            position: relative;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .tier-image img {
            width: 100%;
            height: 420px;
            object-fit: cover;
        }

        .tier-image::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 40%;
            background: linear-gradient(transparent, rgba(15, 118, 110, 0.3));
        }

        .tier-info {
            padding: 20px 0;
        }

        .tier-info .section-label {
            margin-bottom: 12px;
        }

        .tier-info h2 {
            font-size: 28px;
            font-weight: 800;
            line-height: 1.4;
            margin-bottom: 16px;
            color: var(--text);
        }

        .tier-info p {
            color: var(--text-weak);
            line-height: 2;
            margin-bottom: 20px;
            font-size: 15px;
        }

        .tier-list {
            margin-top: 16px;
        }

        .tier-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 10px 0;
            border-bottom: 1px solid var(--border);
            font-size: 15px;
            color: var(--text);
        }

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

        .tier-list li i {
            color: var(--primary);
            font-size: 16px;
            margin-top: 3px;
            flex-shrink: 0;
        }

        /* ===== Process Steps ===== */
        .process-section {
            background: var(--bg-alt);
        }

        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            margin-top: 10px;
            counter-reset: step;
        }

        .process-item {
            text-align: center;
            position: relative;
            padding: 30px 20px;
            background: var(--white);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            transition: var(--transition);
        }

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

        .process-item::before {
            counter-increment: step;
            content: "0" counter(step);
            position: absolute;
            top: 18px;
            right: 20px;
            font-size: 32px;
            font-weight: 800;
            color: rgba(15, 118, 110, 0.1);
            line-height: 1;
        }

        .process-icon {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            color: var(--white);
            font-size: 26px;
            box-shadow: 0 8px 24px rgba(15, 118, 110, 0.25);
        }

        .process-item h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .process-item p {
            font-size: 13px;
            color: var(--text-weak);
            line-height: 1.7;
        }

        /* ===== Compliance & Audit ===== */
        .compliance-section {
            background: var(--white);
        }

        .compliance-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        .compliance-content h2 {
            font-size: 28px;
            font-weight: 800;
            line-height: 1.4;
            margin-bottom: 16px;
        }

        .compliance-content p {
            color: var(--text-weak);
            line-height: 2;
            margin-bottom: 20px;
            font-size: 15px;
        }

        .compliance-badges {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 14px;
            margin-top: 28px;
        }

        .compliance-badge {
            display: flex;
            align-items: center;
            gap: 12px;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 16px;
            transition: var(--transition);
        }

        .compliance-badge:hover {
            border-color: var(--primary-light);
            background: var(--bg-alt);
        }

        .compliance-badge i {
            font-size: 20px;
            color: var(--primary);
            flex-shrink: 0;
        }

        .compliance-badge span {
            font-size: 14px;
            font-weight: 600;
            color: var(--text);
        }

        .compliance-stats {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .compliance-stat {
            text-align: center;
            background: var(--bg-alt);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 32px 20px;
            transition: var(--transition);
        }

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

        .compliance-stat .num {
            font-size: 38px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }

        .compliance-stat .num span {
            font-size: 22px;
            font-weight: 600;
        }

        .compliance-stat .desc {
            font-size: 13px;
            color: var(--text-weak);
            margin-top: 8px;
            line-height: 1.6;
        }

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

        .faq-grid {
            max-width: 860px;
            margin: 0 auto;
        }

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

        .faq-item:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow-sm);
        }

        .faq-question {
            padding: 18px 24px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
        }

        .faq-question i {
            font-size: 14px;
            color: var(--text-weak);
            transition: transform 0.3s ease;
        }

        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }

        .faq-answer {
            padding: 0 24px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
        }

        .faq-item.open .faq-answer {
            padding: 0 24px 20px;
            max-height: 300px;
        }

        .faq-answer p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.9;
        }

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            padding: 90px 0;
            background:
                linear-gradient(135deg, rgba(15, 118, 110, 0.95) 0%, rgba(14, 165, 233, 0.85) 100%),
                url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            color: var(--white);
            text-align: center;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.05);
            top: -200px;
            right: -150px;
        }

        .cta-section h2 {
            font-size: 36px;
            font-weight: 800;
            margin-bottom: 16px;
        }

        .cta-section p {
            font-size: 17px;
            max-width: 660px;
            margin: 0 auto 32px;
            color: rgba(255, 255, 255, 0.9);
        }

        .cta-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .cta-note {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 20px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #0f172a;
            color: #94a3b8;
            padding: 70px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 50px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-brand .brand {
            margin-bottom: 16px;
        }

        .footer-brand .brand span {
            color: var(--white);
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.9;
            max-width: 320px;
            color: #718096;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--white);
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer-col h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 28px;
            height: 2px;
            background: var(--primary-light);
            border-radius: 2px;
        }

        .footer-col ul li {
            margin-bottom: 12px;
        }

        .footer-col ul li a {
            font-size: 14px;
            color: #718096;
            transition: var(--transition);
        }

        .footer-col ul li a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }

        .footer-contact li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: #718096;
        }

        .footer-contact li i {
            color: var(--primary-light);
            font-size: 13px;
            width: 16px;
            text-align: center;
        }

        .footer-bottom {
            padding: 24px 0;
            text-align: center;
            font-size: 13px;
            color: #4a5568;
        }

        /* ===== Responsive ===== */
        @media screen and (max-width: 1024px) {
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .process-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }

            .banner-title {
                font-size: 34px;
            }

            .banner-stats {
                grid-template-columns: repeat(2, 1fr);
            }

            .tier-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }

            .compliance-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }

            .compliance-stats {
                order: -1;
            }
        }

        @media screen and (max-width: 768px) {
            :root {
                --space-section: 60px;
            }

            .header-cta {
                display: none;
            }

            .nav-toggle {
                display: flex;
            }

            .main-nav {
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                background: var(--white);
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-md);
                padding: 16px 24px;
                transform: translateY(-20px);
                opacity: 0;
                visibility: hidden;
                transition: var(--transition);
                z-index: 99;
            }

            .main-nav.open {
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
            }

            .main-nav-list {
                flex-direction: column;
                align-items: flex-start;
                gap: 4px;
            }

            .main-nav-list li a {
                padding: 12px 14px;
                width: 100%;
                border-radius: 8px;
            }

            .page-banner {
                padding: 60px 0 50px;
            }

            .banner-title {
                font-size: 28px;
            }

            .banner-desc {
                font-size: 15px;
            }

            .banner-stats {
                grid-template-columns: 1fr 1fr;
                padding: 20px;
                gap: 16px;
                margin-top: 36px;
            }

            .banner-stat .value {
                font-size: 24px;
            }

            .section-title {
                font-size: 26px;
            }

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

            .process-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }

            .process-item {
                padding: 24px 16px;
            }

            .compliance-badges {
                grid-template-columns: 1fr;
            }

            .compliance-stats {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }

            .compliance-stat .num {
                font-size: 30px;
            }

            .cta-section h2 {
                font-size: 28px;
            }

            .cta-buttons {
                flex-direction: column;
                align-items: center;
            }

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

        @media screen and (max-width: 520px) {
            .container {
                padding: 0 18px;
            }

            .brand span {
                font-size: 16px;
            }

            .brand-icon {
                width: 34px;
                height: 34px;
                font-size: 15px;
            }

            .page-banner {
                padding: 50px 0 36px;
            }

            .banner-title {
                font-size: 23px;
            }

            .banner-desc {
                font-size: 14px;
                line-height: 1.8;
            }

            .banner-stats {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
                padding: 16px;
                margin-top: 28px;
            }

            .banner-stat .value {
                font-size: 20px;
            }

            .banner-stat .label {
                font-size: 12px;
            }

            .banner-actions {
                flex-direction: column;
            }

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

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

            .compliance-stats {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

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

            .tier-image img {
                height: 260px;
            }

            .tier-info h2 {
                font-size: 24px;
            }

            .compliance-content h2 {
                font-size: 24px;
            }

            .faq-question {
                padding: 16px 18px;
                font-size: 14px;
            }

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

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

        /* ===== Utility ===== */
        .mt-1 { margin-top: 8px; }
        .mt-2 { margin-top: 16px; }
        .mt-3 { margin-top: 24px; }
        .mt-4 { margin-top: 40px; }
        .mb-2 { margin-bottom: 16px; }
        .d-none {
            display: none !important;
        }

/* roulang page: category3 */
:root {
  --primary: #0d5e8a;
  --primary-dark: #093d5c;
  --primary-light: #e3f2f9;
  --accent: #0fa3a3;
  --accent-light: #d9f2f2;
  --bg-main: #f7fafc;
  --bg-white: #ffffff;
  --bg-dark: #0b2e42;
  --text-main: #1a2b3c;
  --text-weak: #5a7b8f;
  --text-light: #ffffff;
  --border: #d9e6ee;
  --border-light: #edf3f7;
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --shadow-sm: 0 2px 8px rgba(10, 45, 70, 0.06);
  --shadow-md: 0 6px 24px rgba(10, 45, 70, 0.08);
  --shadow-lg: 0 16px 48px rgba(10, 45, 70, 0.12);
  --spacer-xs: 0.5rem;
  --spacer-sm: 1rem;
  --spacer-md: 2rem;
  --spacer-lg: 4rem;
  --spacer-xl: 6rem;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --radius-btn: 12px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { font-family: var(--font-body); background: var(--bg-main); color: var(--text-main); line-height: 1.7; font-size: 16px; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: color 0.2s ease; }
a:focus-visible, button:focus-visible, input:focus-visible { outline: 3px solid rgba(15, 163, 163, 0.4); outline-offset: 2px; border-radius: 4px; }
ul, ol { list-style: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; position: relative; z-index: 1; }
.section { padding: 80px 0; position: relative; }
.section-alt { background: var(--bg-white); border-top: 1px solid var(--border-light); border-bottom: 1px solid var(--border-light); }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 56px; }
.section-head h2 { font-size: 2.4rem; font-weight: 700; line-height: 1.3; color: var(--bg-dark); margin-bottom: 12px; letter-spacing: -0.02em; }
.section-head p { font-size: 1.1rem; color: var(--text-weak); }
.section-head .head-tag { display: inline-flex; align-items: center; gap: 8px; background: var(--primary-light); color: var(--primary); font-size: 0.85rem; font-weight: 600; padding: 6px 16px; border-radius: 100px; margin-bottom: 16px; }
.section-head .head-tag i { font-size: 0.8rem; }

/* ===== Header / Nav ===== */
.site-header { background: var(--bg-dark); box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15); position: sticky; top: 0; z-index: 1000; border-bottom: 1px solid rgba(255, 255, 255, 0.08); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 76px; gap: 24px; }
.brand { display: flex; align-items: center; gap: 10px; font-size: 1.25rem; font-weight: 700; color: var(--text-light); white-space: nowrap; }
.brand-icon { display: inline-flex; align-items: center; justify-content: center; width: 36px; height: 36px; background: linear-gradient(135deg, var(--accent), var(--primary)); border-radius: 10px; color: #fff; font-size: 1rem; flex-shrink: 0; }
.main-nav-list { display: flex; align-items: center; gap: 4px; margin: 0; padding: 0; }
.main-nav-list li a { display: inline-flex; align-items: center; padding: 10px 18px; border-radius: 10px; font-size: 0.9rem; font-weight: 500; color: rgba(255, 255, 255, 0.85); transition: all 0.25s ease; }
.main-nav-list li a:hover, .main-nav-list li a:focus { background: rgba(255, 255, 255, 0.1); color: #fff; }
.main-nav-list li a.active { background: rgba(15, 163, 163, 0.2); color: #fff; box-shadow: inset 0 0 0 1px rgba(15, 163, 163, 0.3); }
.header-cta { display: flex; align-items: center; gap: 14px; }
.header-search { position: relative; }
.header-search input { background: rgba(255, 255, 255, 0.1); border: 1px solid rgba(255, 255, 255, 0.2); color: #fff; border-radius: 50px; padding: 8px 16px 8px 38px; font-size: 0.85rem; width: 180px; transition: all 0.3s ease; }
.header-search input::placeholder { color: rgba(255, 255, 255, 0.6); }
.header-search input:focus { background: rgba(255, 255, 255, 0.18); border-color: rgba(15, 163, 163, 0.6); width: 220px; outline: none; }
.header-search i { position: absolute; left: 14px; top: 50%; transform: translateY(-50%); color: rgba(255, 255, 255, 0.6); font-size: 0.85rem; }
.btn-header { display: inline-flex; align-items: center; gap: 6px; background: var(--accent); color: #fff; font-weight: 600; font-size: 0.85rem; padding: 9px 20px; border-radius: 50px; transition: all 0.25s ease; }
.btn-header:hover { background: #0d8f8f; transform: translateY(-1px); }

/* ===== Hero Banner ===== */
.page-banner { background: linear-gradient(to right, var(--bg-dark) 0%, #0f3a55 50%, #124a63 100%); padding: 90px 0 100px; position: relative; overflow: hidden; }
.page-banner::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-1.png') center/cover no-repeat; opacity: 0.15; }
.page-banner::after { content: ''; position: absolute; top: 0; right: 0; width: 500px; height: 500px; background: radial-gradient(circle, rgba(15, 163, 163, 0.3), transparent 70%); border-radius: 50%; }
.page-banner .container { position: relative; z-index: 2; }
.banner-content { max-width: 760px; }
.banner-content .breadcrumb { display: flex; align-items: center; gap: 10px; font-size: 0.85rem; color: rgba(255, 255, 255, 0.65); margin-bottom: 20px; }
.banner-content .breadcrumb a:hover { color: #fff; }
.banner-content .breadcrumb i { font-size: 0.7rem; }
.banner-content h1 { font-size: 3rem; font-weight: 750; color: var(--text-light); line-height: 1.25; letter-spacing: -0.02em; margin-bottom: 18px; }
.banner-content h1 span { color: var(--accent); position: relative; }
.banner-content p { font-size: 1.15rem; color: rgba(255, 255, 255, 0.85); line-height: 1.8; margin-bottom: 32px; max-width: 640px; }

/* ===== Stats strip ===== */
.stats-strip { background: var(--bg-white); border-bottom: 1px solid var(--border-light); padding: 28px 0; box-shadow: var(--shadow-sm); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.stats-item { text-align: center; padding: 12px 16px; border-radius: var(--radius-sm); background: var(--bg-main); border: 1px solid var(--border-light); }
.stats-item .num { font-size: 1.8rem; font-weight: 750; color: var(--primary); line-height: 1.2; }
.stats-item .label { font-size: 0.83rem; color: var(--text-weak); margin-top: 4px; }

/* ===== Category nav cards ===== */
.category-cards { padding: 70px 0 20px; }
.category-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.category-card { background: var(--bg-white); border: 1px solid var(--border-light); border-radius: var(--radius-md); padding: 28px 24px; transition: all 0.3s ease; position: relative; overflow: hidden; }
.category-card::before { content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 4px; background: linear-gradient(90deg, var(--primary), var(--accent)); opacity: 0; transition: opacity 0.3s ease; }
.category-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: transparent; }
.category-card:hover::before { opacity: 1; }
.category-card .cat-icon { width: 48px; height: 48px; background: var(--primary-light); border-radius: 12px; display: flex; align-items: center; justify-content: center; color: var(--primary); font-size: 1.2rem; margin-bottom: 16px; }
.category-card h3 { font-size: 1.15rem; font-weight: 650; margin-bottom: 8px; color: var(--bg-dark); }
.category-card p { font-size: 0.9rem; color: var(--text-weak); }

/* ===== Accordion FAQ ===== */
.faq-section { padding: 80px 0; }
.faq-wrap { max-width: 860px; margin: 0 auto; }
.accordion-item { background: var(--bg-white); border: 1px solid var(--border-light); border-radius: var(--radius-md); margin-bottom: 16px; overflow: hidden; transition: box-shadow 0.3s ease, border-color 0.3s ease; }
.accordion-item.hovered { box-shadow: var(--shadow-md); border-color: rgba(13, 94, 138, 0.2); }
.accordion-item.open-item { box-shadow: var(--shadow-md); border-color: rgba(15, 163, 163, 0.4); }
.accordion-header { width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 22px 28px; background: transparent; border: none; cursor: pointer; font-family: inherit; text-align: left; transition: background 0.3s ease; }
.accordion-header:hover { background: var(--bg-main); }
.accordion-header .faq-title { display: flex; align-items: center; gap: 12px; }
.accordion-header .faq-q-icon { width: 32px; height: 32px; background: var(--primary-light); border-radius: 50%; display: flex; align-items: center; justify-content: center; color: var(--primary); font-size: 0.8rem; flex-shrink: 0; }
.accordion-header h3 { font-size: 1.05rem; font-weight: 600; color: var(--bg-dark); margin: 0; line-height: 1.4; }
.accordion-icon { width: 28px; height: 28px; border-radius: 50%; border: 2px solid var(--border); display: flex; align-items: center; justify-content: center; color: var(--primary); font-size: 0.75rem; transition: all 0.35s ease; flex-shrink: 0; }
.accordion-item.open-item .accordion-icon { background: var(--accent); border-color: var(--accent); color: #fff; transform: rotate(45deg); }
.accordion-body { display: none; padding: 0 28px 24px 72px; }
.accordion-item.open-item .accordion-body { display: block; animation: fadeInUp 0.4s ease; }
@keyframes fadeInUp { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }
.accordion-body p { font-size: 0.96rem; color: var(--text-weak); line-height: 1.85; }
.accordion-body p + p { margin-top: 12px; }
.faq-tip { background: var(--accent-light); border-radius: var(--radius-sm); padding: 16px 20px; border-left: 4px solid var(--accent); margin: 16px 0; font-size: 0.9rem; color: var(--text-main); }
.faq-tip i { color: var(--accent); margin-right: 6px; }
.contact-link { color: var(--primary); font-weight: 600; border-bottom: 1px solid rgba(13, 94, 138, 0.3); }
.contact-link:hover { border-bottom-color: var(--primary); }

/* ===== Knowledge articles ===== */
.knowledge-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.knowledge-card { background: var(--bg-white); border-radius: var(--radius-md); overflow: hidden; border: 1px solid var(--border-light); transition: all 0.3s ease; }
.knowledge-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.knowledge-card .card-img { position: relative; height: 180px; overflow: hidden; }
.knowledge-card .card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.knowledge-card:hover .card-img img { transform: scale(1.05); }
.knowledge-card .card-img .tag { position: absolute; top: 14px; left: 14px; background: rgba(255, 255, 255, 0.95); backdrop-filter: blur(4px); color: var(--primary); font-size: 0.78rem; font-weight: 600; padding: 4px 12px; border-radius: 100px; }
.knowledge-card .card-body { padding: 24px; }
.knowledge-card .card-body h3 { font-size: 1.05rem; font-weight: 650; margin-bottom: 8px; color: var(--bg-dark); line-height: 1.4; }
.knowledge-card .card-body p { font-size: 0.88rem; color: var(--text-weak); line-height: 1.7; margin-bottom: 16px; }
.knowledge-card .card-meta { display: flex; align-items: center; justify-content: space-between; font-size: 0.8rem; color: var(--text-weak); border-top: 1px solid var(--border-light); padding-top: 14px; }
.knowledge-card .card-meta .views i { color: var(--accent); margin-right: 4px; }

/* ===== Contact / CTA ===== */
.contact-section { background: var(--bg-dark); padding: 80px 0; position: relative; overflow: hidden; }
.contact-section::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-2.png') center/cover no-repeat; opacity: 0.1; }
.contact-section::after { content: ''; position: absolute; bottom: -60px; right: -60px; width: 300px; height: 300px; background: radial-gradient(circle, rgba(15, 163, 163, 0.3), transparent 70%); border-radius: 50%; }
.contact-inner { position: relative; z-index: 2; display: grid; grid-template-columns: 1.2fr 1fr; gap: 48px; align-items: center; }
.contact-info h2 { font-size: 2rem; color: var(--text-light); font-weight: 700; line-height: 1.3; margin-bottom: 16px; }
.contact-info p { color: rgba(255, 255, 255, 0.75); margin-bottom: 32px; }
.contact-channels { display: grid; gap: 14px; }
.channel-item { display: flex; align-items: center; gap: 16px; background: rgba(255, 255, 255, 0.08); border: 1px solid rgba(255, 255, 255, 0.1); padding: 18px 20px; border-radius: var(--radius-md); backdrop-filter: blur(4px); transition: all 0.3s ease; }
.channel-item:hover { background: rgba(255, 255, 255, 0.14); transform: translateY(-2px); }
.channel-item .ch-ico { width: 42px; height: 42px; background: var(--accent); border-radius: 12px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; font-size: 1rem; }
.channel-item .ch-text { color: #fff; }
.channel-item .ch-text strong { display: block; font-size: 0.95rem; margin-bottom: 2px; }
.channel-item .ch-text span { font-size: 0.8rem; color: rgba(255, 255, 255, 0.7); }
.contact-form-wrap { background: var(--bg-white); border-radius: var(--radius-lg); padding: 40px 36px; box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25); }
.contact-form-wrap h3 { font-size: 1.4rem; color: var(--bg-dark); margin-bottom: 8px; font-weight: 700; }
.contact-form-wrap > p { font-size: 0.9rem; color: var(--text-weak); margin-bottom: 24px; }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: 0.88rem; font-weight: 600; color: var(--text-main); margin-bottom: 6px; }
.form-group input, .form-group select, .form-group textarea { width: 100%; padding: 12px 16px; border: 1px solid var(--border); border-radius: var(--radius-sm); font-family: inherit; font-size: 0.92rem; transition: all 0.3s ease; background: var(--bg-main); }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color: var(--accent); background: #fff; box-shadow: 0 0 0 3px rgba(15, 163, 163, 0.12); outline: none; }
.form-group textarea { resize: vertical; min-height: 90px; }
.btn-submit { width: 100%; background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%); color: #fff; border: none; border-radius: var(--radius-btn); padding: 15px 32px; font-size: 1rem; font-weight: 600; cursor: pointer; transition: all 0.3s ease; display: inline-flex; align-items: center; justify-content: center; gap: 8px; }
.btn-submit:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(13, 94, 138, 0.35); }
.form-note { font-size: 0.8rem; color: var(--text-weak); text-align: center; margin-top: 12px; }
.form-note i { color: var(--accent); }

/* ===== Footer ===== */
.site-footer { background: var(--bg-dark); color: var(--text-light); padding: 70px 0 0; position: relative; }
.site-footer::before { content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 1px; background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.15), transparent); }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 48px; padding-bottom: 56px; }
.footer-brand p { color: rgba(255, 255, 255, 0.65); font-size: 0.9rem; margin-top: 16px; line-height: 1.8; max-width: 280px; }
.footer-col h4 { font-size: 1rem; font-weight: 600; margin-bottom: 20px; color: #fff; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a { color: rgba(255, 255, 255, 0.65); font-size: 0.9rem; transition: all 0.25s ease; display: inline-flex; align-items: center; gap: 6px; }
.footer-col ul a:hover { color: var(--accent); }
.footer-col ul a i { font-size: 0.7rem; opacity: 0.6; }
.footer-contact li { color: rgba(255, 255, 255, 0.65); font-size: 0.9rem; display: flex; align-items: center; gap: 10px; }
.footer-contact i { color: var(--accent); width: 16px; text-align: center; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, 0.08); padding: 24px 0; text-align: center; }
.footer-bottom p { color: rgba(255, 255, 255, 0.5); font-size: 0.85rem; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .category-grid { grid-template-columns: repeat(3, 1fr); gap: 18px; }
  .knowledge-grid { grid-template-columns: repeat(3, 1fr); gap: 20px; }
  .category-card { padding: 20px 18px; }
  .header-search { display: none; }
  .contact-inner { grid-template-columns: 1fr; gap: 32px; }
}
@media (max-width: 768px) {
  .section { padding: 56px 0; }
  .page-banner { padding: 60px 0 70px; }
  .page-banner h1 { font-size: 2.2rem; }
  .main-nav-list { gap: 0; }
  .main-nav-list li a { padding: 8px 12px; font-size: 0.82rem; }
  .header-inner { height: auto; flex-wrap: wrap; padding: 14px 0; }
  .brand { font-size: 1.1rem; }
  .header-cta { margin-left: auto; }
  .category-grid { grid-template-columns: repeat(2, 1fr); }
  .knowledge-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); gap: 32px; }
  .accordion-header { padding: 18px 18px; }
  .accordion-body { padding: 0 18px 18px 52px; }
  .banner-content h1 { font-size: 2.2rem; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
}
@media (max-width: 520px) {
  .container { padding: 0 18px; }
  .category-grid { grid-template-columns: 1fr; }
  .knowledge-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 8px; }
  .stats-item { padding: 10px 8px; }
  .stats-item .num { font-size: 1.4rem; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; padding-bottom: 32px; }
  .contact-form-wrap { padding: 28px 20px; }
  .main-nav-list { overflow-x: auto; width: 100%; -webkit-overflow-scrolling: touch; flex-wrap: nowrap; }
  .header-inner { flex-direction: column; align-items: stretch; gap: 10px; }
  .header-cta { margin-left: 0; }
  .banner-content h1 { font-size: 1.8rem; }
  .section-head h2 { font-size: 1.7rem; }
  .page-banner p { font-size: 1rem; }
  .contact-inner { grid-template-columns: 1fr; }
  .contact-info h2 { font-size: 1.6rem; }
  .accordion-header h3 { font-size: 0.92rem; }
  .accordion-body { padding: 0 16px 18px 44px; }
}

/* roulang page: article */
:root {
            --primary: #0b7a75;
            --primary-dark: #08625e;
            --primary-light: #e3f2f1;
            --accent: #0e8fc7;
            --bg: #f5f8fa;
            --surface: #ffffff;
            --text: #1e2d3d;
            --text-muted: #5f7486;
            --border: #dce5ec;
            --radius-panel: 16px;
            --radius-card: 12px;
            --radius-small: 8px;
            --shadow-xs: 0 2px 6px rgba(16, 42, 67, 0.05);
            --shadow-sm: 0 4px 14px rgba(16, 42, 67, 0.07);
            --shadow-md: 0 10px 30px rgba(16, 42, 67, 0.10);
            --shadow-lg: 0 20px 50px rgba(16, 42, 67, 0.14);
            --spacing-section: 80px;
            --font-main: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
        }
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font-main);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        img { max-width: 100%; display: inline-block; vertical-align: middle; }
        a { color: var(--primary); text-decoration: none; transition: color 0.2s ease; }
        a:hover { color: var(--primary-dark); }
        ul, ol { list-style-type: none; }
        button, input, select, textarea { font-family: inherit; font-size: inherit; color: inherit; }
        .container {
            width: 100%;
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .section { padding: var(--spacing-section) 0; }
        .section-tight { padding: 60px 0; }

        /* ========== 按钮系统 ========== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: 50px;
            border: 1px solid transparent;
            font-size: 0.92rem;
            font-weight: 500;
            line-height: 1.4;
            cursor: pointer;
            transition: all 0.25s ease;
            text-align: center;
            background: transparent;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(11, 122, 117, 0.28);
        }
        .btn-primary:hover { background: var(--primary-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 20px rgba(11, 122, 117, 0.35); }
        .btn-outline {
            border-color: rgba(255, 255, 255, 0.55);
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(4px);
        }
        .btn-outline:hover { background: rgba(255, 255, 255, 0.2); color: #fff; border-color: #fff; }
        .btn-outline-dark {
            border-color: var(--primary);
            color: var(--primary);
            background: transparent;
        }
        .btn-outline-dark:hover { background: var(--primary-light); color: var(--primary-dark); }
        .btn-sm { padding: 8px 18px; font-size: 0.85rem; }
        .btn-lg { padding: 15px 34px; font-size: 1rem; }

        /* ========== 徽章 / 标签 ========== */
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 5px 14px;
            border-radius: 50px;
            background: rgba(255, 255, 255, 0.14);
            border: 1px solid rgba(255, 255, 255, 0.35);
            color: #fff;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.03em;
            backdrop-filter: blur(4px);
        }
        .tag-item {
            display: inline-block;
            padding: 5px 14px;
            background: var(--primary-light);
            color: var(--primary-dark);
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 500;
            cursor: default;
            transition: background 0.2s ease;
        }
        .tag-item:hover { background: #d0e9e6; }

        /* ========== 顶部导航 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: saturate(180%) blur(12px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 2px 10px rgba(16, 42, 67, 0.04);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            min-height: 72px;
        }
        .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text);
            letter-spacing: 0.01em;
        }
        .brand .brand-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
            color: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            box-shadow: 0 4px 12px rgba(11, 122, 117, 0.28);
        }
        .brand:hover { color: var(--primary); }
        .main-nav-list {
            display: flex;
            align-items: center;
            gap: 6px;
            margin: 0;
        }
        .main-nav-list a {
            display: block;
            padding: 9px 18px;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-muted);
            transition: all 0.2s ease;
            border: 1px solid transparent;
        }
        .main-nav-list a:hover { color: var(--primary); background: var(--primary-light); }
        .main-nav-list a.active { color: var(--primary); background: var(--primary-light); border-color: rgba(11, 122, 117, 0.18); }
        .header-actions { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
        .nav-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border: 1px solid var(--border);
            border-radius: 10px;
            background: var(--surface);
            color: var(--text);
            font-size: 1.05rem;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: all 0.2s ease;
        }
        .nav-toggle:hover { border-color: var(--primary); color: var(--primary); }
        .nav-toggle.active { background: var(--primary); color: #fff; border-color: var(--primary); }

        /* ========== 文章 Hero Banner ========== */
        .article-hero {
            position: relative;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-color: #0a3442;
            padding: 72px 0 80px;
            overflow: hidden;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(8, 44, 60, 0.93) 0%, rgba(8, 44, 60, 0.78) 45%, rgba(11, 122, 117, 0.55) 100%);
            z-index: 1;
        }
        .article-hero .container { position: relative; z-index: 2; }
        .breadcrumb {
            display: inline-flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            margin-bottom: 22px;
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.75);
        }
        .breadcrumb a { color: rgba(255, 255, 255, 0.9); transition: color 0.2s ease; }
        .breadcrumb a:hover { color: #fff; }
        .breadcrumb .sep { opacity: 0.5; }
        .article-hero .badge-row { margin-bottom: 18px; }
        .article-hero h1 {
            max-width: 860px;
            font-size: 2.45rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.28;
            margin-bottom: 18px;
            letter-spacing: -0.02em;
        }
        .article-hero .article-summary {
            max-width: 760px;
            color: rgba(255, 255, 255, 0.88);
            font-size: 1.05rem;
            line-height: 1.8;
            margin-bottom: 26px;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 14px 24px;
            color: rgba(255, 255, 255, 0.82);
            font-size: 0.88rem;
        }
        .article-meta span { display: inline-flex; align-items: center; gap: 7px; }
        .article-meta i { opacity: 0.75; }

        /* ========== 文章主体 ========== */
        .article-section { padding: 64px 0 80px; }
        .article-card {
            background: var(--surface);
            border-radius: var(--radius-panel);
            box-shadow: var(--shadow-sm);
            padding: 42px 48px;
            border: 1px solid var(--border);
        }
        .article-content {
            font-size: 1.03rem;
            line-height: 1.9;
            color: #2a3845;
        }
        .article-content h2 {
            font-size: 1.5rem;
            font-weight: 700;
            margin: 2rem 0 1rem;
            color: var(--text);
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--primary-light);
            line-height: 1.4;
        }
        .article-content h3 {
            font-size: 1.2rem;
            font-weight: 600;
            margin: 1.6rem 0 0.7rem;
            color: var(--text);
        }
        .article-content p { margin: 0 0 1.25rem; }
        .article-content ul, .article-content ol { margin: 0 0 1.3rem 1.4rem; list-style-type: disc; }
        .article-content ol { list-style-type: decimal; }
        .article-content li { margin-bottom: 0.5rem; }
        .article-content img { border-radius: var(--radius-card); box-shadow: var(--shadow-sm); margin: 1.5rem 0; }
        .article-content blockquote {
            border-left: 4px solid var(--primary);
            background: var(--primary-light);
            padding: 1rem 1.4rem;
            border-radius: 0 var(--radius-small) var(--radius-small) 0;
            margin: 1.6rem 0;
            color: #31555c;
        }
        .article-content blockquote p { margin: 0; }
        .article-content a { text-decoration: underline; text-underline-offset: 4px; }
        .article-content a:hover { color: var(--accent); }
        .article-content table { width: 100%; border-collapse: collapse; margin: 1.5rem 0; font-size: 0.95rem; }
        .article-content th, .article-content td { border: 1px solid var(--border); padding: 12px 14px; text-align: left; }
        .article-content th { background: var(--primary-light); font-weight: 600; color: var(--primary-dark); }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 32px;
            padding-top: 28px;
            border-top: 1px solid var(--border);
        }
        .article-tags .label { font-size: 0.88rem; font-weight: 600; color: var(--text-muted); display: inline-flex; align-items: center; gap: 6px; }
        .article-empty {
            text-align: center;
            background: var(--surface);
            border: 1px dashed var(--border);
            border-radius: var(--radius-panel);
            padding: 70px 32px;
        }
        .article-empty .empty-icon {
            width: 72px;
            height: 72px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 1.6rem;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 18px;
        }
        .article-empty h2 { font-size: 1.5rem; margin-bottom: 10px; }
        .article-empty p { color: var(--text-muted); margin-bottom: 24px; }

        /* ========== 侧边栏 ========== */
        .sidebar { position: sticky; top: 100px; }
        .sidebar-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-panel);
            padding: 26px 26px;
            box-shadow: var(--shadow-xs);
            margin-bottom: 24px;
        }
        .sidebar-card h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 18px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--primary-light);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card h4 i { color: var(--primary); }
        .sidebar-list li { border-bottom: 1px dashed var(--border); padding: 10px 0; }
        .sidebar-list li:last-child { border-bottom: none; }
        .sidebar-list a { font-size: 0.9rem; color: var(--text); transition: color 0.2s ease; display: flex; gap: 8px; align-items: flex-start; }
        .sidebar-list a:hover { color: var(--primary); }
        .sidebar-list a i { margin-top: 4px; font-size: 0.7rem; color: var(--primary); }
        .sidebar-img-wrap {
            border-radius: var(--radius-card);
            overflow: hidden;
            margin-bottom: 14px;
            box-shadow: var(--shadow-xs);
        }
        .sidebar-img-wrap img { width: 100%; height: 130px; object-fit: cover; display: block; }
        .sidebar-safe-info {
            background: var(--primary-light);
            border-radius: var(--radius-small);
            padding: 12px 14px;
            font-size: 0.84rem;
            color: #31555c;
            line-height: 1.7;
            margin-top: 4px;
        }
        .sidebar-safe-info i { margin-right: 4px; color: var(--primary); }
        .sidebar-cta {
            background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
            color: #fff;
            border: none;
            padding: 30px 26px;
            text-align: center;
        }
        .sidebar-cta h4 { color: #fff; border-bottom: 1px solid rgba(255, 255, 255, 0.25); }
        .sidebar-cta h4 i { color: rgba(255, 255, 255, 0.8); }
        .sidebar-cta p { font-size: 0.86rem; color: rgba(255, 255, 255, 0.88); margin-bottom: 18px; }
        .sidebar-cta .btn { width: 100%; background: #fff; color: var(--primary); }
        .sidebar-cta .btn:hover { background: rgba(255, 255, 255, 0.9); }

        /* ========== 相关推荐 ========== */
        .related-section { background: var(--surface); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
        .related-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 36px;
        }
        .related-header h2 {
            font-size: 1.7rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .related-header h2::before {
            content: '';
            width: 5px;
            height: 28px;
            border-radius: 10px;
            background: linear-gradient(180deg, var(--primary), var(--accent));
        }
        .related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
        .related-card {
            border: 1px solid var(--border);
            border-radius: var(--radius-panel);
            overflow: hidden;
            background: var(--surface);
            transition: all 0.3s ease;
            box-shadow: var(--shadow-xs);
        }
        .related-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: rgba(11, 122, 117, 0.35); }
        .related-card img { width: 100%; height: 170px; object-fit: cover; display: block; }
        .related-body { padding: 22px 24px 24px; }
        .related-body .badge { background: var(--primary-light); color: var(--primary-dark); border: none; backdrop-filter: none; font-size: 0.75rem; margin-bottom: 10px; }
        .related-body h3 { font-size: 1.1rem; font-weight: 600; line-height: 1.5; margin-bottom: 8px; }
        .related-body h3 a { color: var(--text); transition: color 0.2s ease; }
        .related-body h3 a:hover { color: var(--primary); }
        .related-body p { font-size: 0.87rem; color: var(--text-muted); line-height: 1.7; margin-bottom: 0; }

        /* ========== CTA 区域 ========== */
        .cta-section {
            position: relative;
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            background-color: #0a3442;
            padding: 90px 0;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(8, 44, 60, 0.95) 0%, rgba(11, 122, 117, 0.85) 100%);
        }
        .cta-inner { position: relative; z-index: 2; text-align: center; max-width: 720px; margin: 0 auto; }
        .cta-inner h2 { color: #fff; font-size: 2rem; font-weight: 800; margin-bottom: 16px; letter-spacing: -0.02em; }
        .cta-inner p { color: rgba(255, 255, 255, 0.9); font-size: 1.05rem; margin-bottom: 30px; line-height: 1.8; }
        .cta-actions { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }

        /* ========== 页脚 ========== */
        .site-footer { background: #0b1f2a; color: #9ab3c3; padding-top: 64px; }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 44px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand .brand { color: #fff; margin-bottom: 16px; }
        .footer-brand .brand .brand-icon { width: 36px; height: 36px; font-size: 0.9rem; }
        .footer-brand p { font-size: 0.88rem; line-height: 1.8; margin-top: 12px; color: #7a95a6; }
        .footer-col h4 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 18px;
            letter-spacing: 0.03em;
        }
        .footer-col ul li { margin-bottom: 10px; }
        .footer-col ul li a { color: #7a95a6; font-size: 0.88rem; transition: color 0.2s ease, padding-left 0.2s ease; }
        .footer-col ul li a:hover { color: #fff; padding-left: 4px; }
        .footer-contact li { display: flex; align-items: center; gap: 9px; font-size: 0.88rem; color: #7a95a6; }
        .footer-contact i { width: 16px; text-align: center; color: var(--primary); }
        .footer-bottom {
            padding: 22px 0;
            text-align: center;
            font-size: 0.84rem;
            color: #648095;
        }
        .footer-bottom p { margin: 0; }

        /* ========== 响应式断点 ========== */
        @media (max-width: 1024px) {
            .container { padding: 0 20px; }
            .related-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
            .article-card { padding: 32px 30px; }
            .article-hero h1 { font-size: 2rem; }
        }
        @media (max-width: 768px) {
            body { font-size: 0.96rem; }
            .section { --spacing-section: 56px; }
            .header-inner { flex-wrap: wrap; min-height: 64px; padding-top: 10px; padding-bottom: 10px; }
            .main-nav {
                display: none;
                width: 100%;
                order: 3;
                margin-top: 8px;
                background: var(--surface);
                border-radius: var(--radius-panel);
                box-shadow: var(--shadow-md);
                border: 1px solid var(--border);
                padding: 10px;
            }
            .main-nav.open { display: block; }
            .main-nav-list { flex-direction: column; gap: 2px; }
            .main-nav-list a { padding: 12px 16px; border-radius: var(--radius-small); border-bottom: 1px solid var(--border); }
            .main-nav-list li:last-child a { border-bottom: none; }
            .header-actions { order: 2; }
            .nav-toggle { display: inline-flex; }
            .article-hero { padding: 52px 0 60px; }
            .article-hero h1 { font-size: 1.7rem; }
            .article-hero .article-summary { font-size: 0.95rem; }
            .article-section { padding: 44px 0 56px; }
            .article-card { padding: 24px 20px; }
            .related-section { padding: 50px 0; }
            .related-header h2 { font-size: 1.4rem; }
            .related-grid { grid-template-columns: 1fr; }
            .cta-section { padding: 60px 0; }
            .cta-inner h2 { font-size: 1.6rem; }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .header-actions .btn-sm { padding: 8px 14px; font-size: 0.82rem; }
            .article-meta { flex-direction: column; align-items: flex-start; gap: 8px; }
            .article-content { font-size: 1rem; line-height: 1.85; }
            .article-content h2 { font-size: 1.35rem; }
            .article-tags .tag-item { font-size: 0.76rem; }
            .footer-grid { grid-template-columns: 1fr; gap: 22px; }
            .cta-actions { flex-direction: column; }
            .cta-actions .btn { width: 100%; }
        }
        @media (max-width: 360px) {
            .brand span:last-child { font-size: 1rem; }
        }