/* roulang page: index */
/* ========== 设计变量 ========== */
        :root {
            --primary: #2E6DB4;
            --primary-dark: #245A99;
            --primary-light: #EAF1FA;
            --accent: #C9A063;
            --accent-light: #F7EFDE;
            --bg: #F5F7FB;
            --card-bg: #FFFFFF;
            --text-title: #1F2937;
            --text-body: #3A4250;
            --text-muted: #7A8599;
            --border: #E5E9F0;
            --success: #2E9E6E;
            --warning: #E6A53C;
            --error: #D96C5A;
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-input: 10px;
            --shadow: 0 6px 24px rgba(28, 61, 105, 0.08);
            --shadow-hover: 0 14px 32px rgba(28, 61, 105, 0.14);
            --font: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
            --container-max: 1200px;
            --section-gap: 88px;
        }

        /* ========== Reset / Base ========== */
        *,
        *::before,
        *::after {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-body);
            background: var(--bg);
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            display: block;
            object-fit: cover;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.25s, background 0.25s, box-shadow 0.25s, transform 0.25s;
        }
        a:hover {
            color: var(--primary-dark);
        }
        button,
        input {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }
        ul,
        ol {
            list-style: none;
        }

        /* ========== 容器 ========== */
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* ========== 顶部信息条 ========== */
        .topbar {
            background: var(--primary-light);
            height: 40px;
            display: flex;
            align-items: center;
            border-bottom: 1px solid var(--border);
            font-size: 13px;
            color: var(--text-muted);
        }
        .topbar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            width: 100%;
        }
        .topbar-left {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .topbar-left i {
            font-style: normal;
            color: var(--primary);
        }
        .topbar-right {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .topbar-right a {
            color: var(--text-body);
            font-weight: 500;
            transition: color 0.2s;
        }
        .topbar-right a:hover {
            color: var(--primary);
        }
        .topbar-right .divider {
            width: 1px;
            height: 14px;
            background: #CBD5E1;
        }

        /* ========== 主导航 ========== */
        .main-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--card-bg);
            height: 76px;
            display: flex;
            align-items: center;
            border-bottom: 1px solid var(--border);
            box-shadow: 0 2px 16px rgba(28, 61, 105, 0.04);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            font-weight: 800;
            letter-spacing: -1px;
            box-shadow: 0 4px 12px rgba(46, 109, 180, 0.25);
        }
        .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-title);
            line-height: 1.2;
        }
        .logo-text span {
            font-size: 13px;
            font-weight: 400;
            color: var(--text-muted);
            display: block;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .main-nav a {
            padding: 8px 18px;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 500;
            color: var(--text-body);
            position: relative;
            transition: background 0.2s, color 0.2s;
        }
        .main-nav a:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .main-nav a.active {
            color: var(--primary);
            font-weight: 600;
            background: var(--primary-light);
        }
        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 28px;
            height: 3px;
            border-radius: 2px;
            background: var(--primary);
        }

        .menu-toggle {
            display: none;
            width: 42px;
            height: 42px;
            background: none;
            border: 1px solid var(--border);
            border-radius: 10px;
            cursor: pointer;
            padding: 10px;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            gap: 4px;
            transition: background 0.2s;
        }
        .menu-toggle:hover {
            background: var(--primary-light);
        }
        .menu-toggle span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--text-title);
            border-radius: 2px;
            transition: transform 0.3s, opacity 0.3s;
        }
        .menu-toggle.active span:nth-child(1) {
            transform: translateY(6px) rotate(45deg);
        }
        .menu-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .menu-toggle.active span:nth-child(3) {
            transform: translateY(-6px) rotate(-45deg);
        }

        /* ========== Hero ========== */
        .hero {
            position: relative;
            min-height: 540px;
            display: flex;
            align-items: center;
            background: linear-gradient(100deg, rgba(255, 255, 255, 0.94) 0%, rgba(245, 247, 251, 0.82) 45%, rgba(234, 241, 250, 0.55) 100%), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            padding: 80px 0;
        }
        .hero-inner {
            max-width: 680px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: 30px;
            padding: 5px 16px;
            font-size: 13px;
            color: var(--primary);
            font-weight: 500;
            box-shadow: 0 2px 8px rgba(28, 61, 105, 0.05);
            margin-bottom: 22px;
        }
        .hero-badge .dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--success);
            display: inline-block;
        }
        .hero h1 {
            font-size: 44px;
            font-weight: 800;
            color: var(--text-title);
            line-height: 1.25;
            letter-spacing: 1px;
            margin-bottom: 18px;
        }
        .hero h1 .highlight {
            color: var(--primary);
            position: relative;
        }
        .hero h1 .highlight::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 4px;
            width: 100%;
            height: 8px;
            background: rgba(46, 109, 180, 0.15);
            border-radius: 4px;
            z-index: -1;
        }
        .hero-sub {
            font-size: 18px;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 32px;
            max-width: 560px;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* ========== 按钮 ========== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
            border: none;
            line-height: 1.4;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 16px rgba(46, 109, 180, 0.25);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(46, 109, 180, 0.3);
            color: #fff;
        }
        .btn-secondary {
            background: #fff;
            color: var(--primary);
            border: 1px solid var(--primary);
        }
        .btn-secondary:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
        }
        .btn-lg {
            padding: 14px 34px;
            font-size: 16px;
        }

        /* ========== 通用板块 ========== */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--card-bg);
        }
        .section-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 48px;
            flex-wrap: wrap;
            gap: 16px;
        }
        .section-header h2 {
            font-size: 30px;
            font-weight: 700;
            color: var(--text-title);
            position: relative;
            padding-left: 18px;
            line-height: 1.3;
        }
        .section-header h2::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 26px;
            border-radius: 2px;
            background: var(--primary);
        }
        .section-header p {
            color: var(--text-muted);
            font-size: 15px;
            max-width: 460px;
        }
        .section-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .section-link:hover {
            gap: 8px;
        }

        /* ========== 品牌故事 ========== */
        .story-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }
        .story-content .eyebrow {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--accent);
            background: var(--accent-light);
            border-radius: 6px;
            padding: 4px 12px;
            margin-bottom: 20px;
            letter-spacing: 0.5px;
        }
        .story-content h2 {
            font-size: 30px;
            font-weight: 700;
            color: var(--text-title);
            line-height: 1.35;
            margin-bottom: 20px;
        }
        .story-content > p {
            color: var(--text-body);
            font-size: 16px;
            line-height: 1.8;
            margin-bottom: 28px;
        }
        .story-stats {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 10px;
        }
        .stat-item {
            background: var(--bg);
            border-radius: var(--radius-card);
            padding: 20px 16px;
            text-align: center;
            border: 1px solid var(--border);
            transition: box-shadow 0.3s, transform 0.3s;
        }
        .stat-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .stat-num {
            font-size: 32px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            font-family: "Avenir Next", "Inter", Arial, sans-serif;
        }
        .stat-label {
            font-size: 14px;
            color: var(--text-muted);
            margin-top: 4px;
        }
        .story-image {
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow);
            position: relative;
            min-height: 320px;
        }
        .story-image img {
            width: 100%;
            height: 100%;
            min-height: 320px;
            object-fit: cover;
        }
        .story-image::after {
            content: '';
            position: absolute;
            inset: 0;
            border-radius: var(--radius-card);
            background: linear-gradient(180deg, rgba(28, 61, 105, 0) 50%, rgba(28, 61, 105, 0.1) 100%);
            pointer-events: none;
        }

        /* ========== 精选内容卡 ========== */
        .featured-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
        }
        .featured-card {
            background: var(--card-bg);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: transform 0.3s, box-shadow 0.3s;
            display: flex;
            flex-direction: column;
        }
        .featured-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .featured-card .card-img {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        .featured-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s;
        }
        .featured-card:hover .card-img img {
            transform: scale(1.04);
        }
        .card-img .tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(4px);
            border-radius: 20px;
            padding: 4px 14px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
        }
        .card-body {
            padding: 24px 24px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .card-body h3 {
            font-size: 19px;
            font-weight: 600;
            color: var(--text-title);
            margin-bottom: 10px;
            line-height: 1.4;
        }
        .card-body p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 16px;
            flex: 1;
        }
        .card-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            margin-top: auto;
        }
        .card-link:hover {
            gap: 8px;
        }

        /* ========== 信任背书 ========== */
        .trust-section {
            background: var(--card-bg);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
            padding: 72px 0;
        }
        .trust-grid {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 60px;
            align-items: center;
        }
        .trust-left h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-title);
            margin-bottom: 18px;
        }
        .trust-left > p {
            color: var(--text-body);
            font-size: 15px;
            line-height: 1.8;
            margin-bottom: 28px;
            max-width: 520px;
        }
        .trust-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .trust-list li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 15px;
            color: var(--text-body);
        }
        .trust-list li i {
            color: var(--success);
            font-style: normal;
            font-weight: 800;
            font-size: 16px;
        }
        .trust-right {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }
        .trust-card {
            background: var(--bg);
            border-radius: var(--radius-card);
            padding: 28px 22px;
            text-align: center;
            border: 1px solid var(--border);
            transition: box-shadow 0.3s, transform 0.3s;
        }
        .trust-card:hover {
            box-shadow: var(--shadow);
            transform: translateY(-3px);
        }
        .trust-card .num {
            font-size: 36px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            font-family: "Avenir Next", "Inter", Arial, sans-serif;
        }
        .trust-card .label {
            font-size: 14px;
            color: var(--text-muted);
            margin-top: 6px;
        }
        .trust-badges {
            margin-top: 32px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
        }
        .trust-badges .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary-light);
            color: var(--primary-dark);
            border-radius: 8px;
            padding: 6px 14px;
            font-size: 13px;
            font-weight: 500;
        }
        .trust-badges .badge i {
            font-style: normal;
        }

        /* ========== 资讯动态列表 ========== */
        .news-section {
            background: var(--bg);
        }
        .news-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .news-card {
            background: var(--card-bg);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            padding: 24px 26px;
            display: flex;
            flex-direction: column;
            box-shadow: var(--shadow);
            transition: transform 0.3s, box-shadow 0.3s;
        }
        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .news-tag {
            display: inline-block;
            align-self: flex-start;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 20px;
            padding: 3px 14px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 12px;
        }
        .news-card h4 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-title);
            line-height: 1.45;
            margin-bottom: 10px;
        }
        .news-card h4 a {
            color: var(--text-title);
        }
        .news-card h4 a:hover {
            color: var(--primary);
        }
        .news-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 14px;
            flex: 1;
        }
        .news-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-top: 1px solid var(--border);
            padding-top: 14px;
            margin-top: auto;
        }
        .news-date {
            font-size: 13px;
            color: var(--text-muted);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .news-meta a {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .news-meta a:hover {
            gap: 8px;
        }
        .news-empty {
            grid-column: 1 / -1;
            background: var(--card-bg);
            border: 1px dashed var(--border);
            border-radius: var(--radius-card);
            padding: 64px 24px;
            text-align: center;
            color: var(--text-muted);
        }
        .news-empty .empty-icon {
            font-size: 40px;
            margin-bottom: 12px;
            opacity: 0.6;
        }
        .news-empty p {
            font-size: 15px;
        }

        /* ========== FAQ ========== */
        .faq-section {
            background: var(--card-bg);
        }
        .faq-wrap {
            max-width: 860px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .faq-item {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 14px;
            padding: 0;
            overflow: hidden;
            transition: box-shadow 0.3s;
        }
        .faq-item.open {
            box-shadow: var(--shadow);
            border-color: var(--primary);
        }
        .faq-q {
            width: 100%;
            text-align: left;
            background: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 24px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-title);
        }
        .faq-q .icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 600;
            flex-shrink: 0;
            transition: transform 0.3s, background 0.3s;
        }
        .faq-item.open .faq-q .icon {
            transform: rotate(45deg);
            background: var(--primary);
            color: #fff;
        }
        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s;
            padding: 0 24px;
            font-size: 15px;
            line-height: 1.75;
            color: var(--text-body);
        }
        .faq-item.open .faq-a {
            max-height: 400px;
            padding: 0 24px 22px;
        }
        .faq-a p {
            margin-bottom: 8px;
        }
        .faq-a p:last-child {
            margin-bottom: 0;
        }

        /* ========== CTA 订阅 ========== */
        .cta-section {
            background: var(--bg);
            padding: 0 0 80px;
        }
        .cta-box {
            background: linear-gradient(135deg, var(--primary-light) 0%, #F5F7FB 100%);
            border: 1px solid var(--primary);
            border-radius: 20px;
            padding: 48px 56px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
            box-shadow: 0 10px 40px rgba(46, 109, 180, 0.06);
            flex-wrap: wrap;
        }
        .cta-content h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-title);
            margin-bottom: 8px;
        }
        .cta-content p {
            font-size: 15px;
            color: var(--text-muted);
            max-width: 360px;
        }
        .cta-form {
            display: flex;
            gap: 12px;
            flex: 1;
            max-width: 440px;
            min-width: 280px;
        }
        .cta-form input {
            flex: 1;
            height: 46px;
            border: 1px solid #CBD5E1;
            border-radius: var(--radius-input);
            padding: 0 18px;
            font-size: 14px;
            color: var(--text-body);
            background: #fff;
            transition: border-color 0.25s, box-shadow 0.25s;
        }
        .cta-form input::placeholder {
            color: var(--text-muted);
        }
        .cta-form input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(46, 109, 180, 0.15);
            outline: none;
        }
        .cta-form .btn {
            height: 46px;
            padding: 0 28px;
            white-space: nowrap;
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: #1F2937;
            color: rgba(255, 255, 255, 0.8);
            padding: 64px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 48px;
            padding-bottom: 48px;
        }
        .footer-brand .logo-text {
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-brand .logo-icon {
            width: 36px;
            height: 36px;
            font-size: 16px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            margin-top: 16px;
            color: rgba(255, 255, 255, 0.6);
            max-width: 280px;
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-col ul a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            transition: color 0.2s;
        }
        .footer-col ul a:hover {
            color: #fff;
        }
        .footer-contact p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-contact p i {
            font-style: normal;
            color: var(--accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 20px 0;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.6);
        }
        .footer-bottom a:hover {
            color: #fff;
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1023px) {
            .featured-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .featured-card:last-child {
                grid-column: 1 / -1;
            }
            .story-grid {
                gap: 40px;
            }
            .trust-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .cta-box {
                padding: 36px 32px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 36px;
            }
        }

        @media (max-width: 767px) {
            :root {
                --section-gap: 56px;
            }
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .topbar {
                height: 36px;
            }
            .topbar-left {
                font-size: 12px;
            }
            .topbar-right {
                gap: 8px;
                font-size: 12px;
            }
            .topbar-right .divider {
                display: none;
            }

            .main-header {
                height: 64px;
            }
            .logo-icon {
                width: 34px;
                height: 34px;
                font-size: 14px;
                border-radius: 10px;
            }
            .logo-text {
                font-size: 17px;
            }
            .logo-text span {
                font-size: 11px;
            }
            .menu-toggle {
                display: flex;
            }
            .main-nav {
                position: fixed;
                top: 100px;
                left: 0;
                right: 0;
                background: var(--card-bg);
                flex-direction: column;
                padding: 16px 20px 24px;
                display: none;
                box-shadow: 0 16px 32px rgba(28, 61, 105, 0.12);
                border-bottom: 1px solid var(--border);
                z-index: 999;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                width: 100%;
                padding: 14px 16px;
                border-radius: 10px;
                font-size: 16px;
            }
            .main-nav a.active {
                background: var(--primary-light);
            }
            .main-nav a.active::after {
                display: none;
            }

            .hero {
                min-height: 380px;
                padding: 56px 0;
            }
            .hero h1 {
                font-size: 30px;
                line-height: 1.3;
                letter-spacing: 0.5px;
            }
            .hero-sub {
                font-size: 16px;
                margin-bottom: 24px;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .hero-badge {
                font-size: 12px;
                padding: 4px 12px;
            }

            .section {
                padding: 48px 0;
            }
            .section-header {
                flex-direction: column;
                align-items: flex-start;
                margin-bottom: 32px;
                gap: 8px;
            }
            .section-header h2 {
                font-size: 24px;
            }

            .story-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .story-content h2 {
                font-size: 24px;
            }
            .story-stats {
                grid-template-columns: repeat(3, 1fr);
                gap: 12px;
            }
            .stat-item {
                padding: 14px 10px;
            }
            .stat-num {
                font-size: 24px;
            }
            .stat-label {
                font-size: 12px;
            }

            .featured-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .featured-card:last-child {
                grid-column: auto;
            }

            .trust-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .trust-right {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .trust-card {
                padding: 20px 14px;
            }
            .trust-card .num {
                font-size: 28px;
            }

            .news-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .news-card {
                padding: 20px;
            }
            .news-card h4 {
                font-size: 16px;
            }

            .faq-q {
                padding: 16px 18px;
                font-size: 15px;
            }
            .faq-a {
                padding: 0 18px;
            }
            .faq-item.open .faq-a {
                padding: 0 18px 18px;
            }

            .cta-box {
                padding: 28px 22px;
                flex-direction: column;
                gap: 20px;
            }
            .cta-content h2 {
                font-size: 20px;
            }
            .cta-form {
                width: 100%;
                flex-direction: column;
                gap: 12px;
            }
            .cta-form input {
                width: 100%;
            }
            .cta-form .btn {
                width: 100%;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
                padding-bottom: 32px;
            }
            .footer-brand p {
                max-width: 100%;
            }
            .footer-bottom {
                padding: 16px 12px;
                font-size: 12px;
                line-height: 1.6;
            }
        }

        @media (max-width: 480px) {
            .hero h1 {
                font-size: 26px;
            }
            .topbar-right a:not(:first-child) {
                display: none;
            }
            .topbar-right .divider {
                display: none;
            }
            .story-stats {
                grid-template-columns: 1fr 1fr 1fr;
                gap: 8px;
            }
            .trust-badges {
                flex-direction: column;
                align-items: flex-start;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #2E6DB4;
            --primary-dark: #245A99;
            --primary-light: #EAF1FA;
            --accent: #C9A063;
            --accent-light: #F7EFDE;
            --bg: #F5F7FB;
            --card-bg: #FFFFFF;
            --text: #1F2937;
            --text-body: #3A4250;
            --text-muted: #7A8599;
            --border: #E5E9F0;
            --success: #2E9E6E;
            --warning: #E6A53C;
            --error: #D96C5A;
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-input: 10px;
            --shadow-card: 0 6px 24px rgba(28, 61, 105, 0.08);
            --shadow-hover: 0 14px 32px rgba(28, 61, 105, 0.14);
            --font: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
            --container: 1200px;
            --spacer: 90px;
            --transition: all 0.3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

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

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

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

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

        ul,
        ol {
            list-style: none;
        }

        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ========== 顶部信息条 ========== */
        .top-bar {
            background: var(--primary-light);
            height: 38px;
            display: flex;
            align-items: center;
            font-size: 13px;
            color: var(--primary-dark);
            border-bottom: 1px solid var(--border);
        }

        .top-bar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .top-bar-left {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .top-bar-left i {
            font-size: 13px;
            opacity: 0.8;
        }

        .top-bar-right {
            display: flex;
            align-items: center;
            gap: 18px;
        }

        .top-bar-right a {
            color: var(--primary-dark);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .top-bar-right a:hover {
            color: var(--primary);
        }

        .top-bar-right .divider {
            width: 1px;
            height: 14px;
            background: rgba(46, 109, 180, 0.25);
        }

        /* ========== 主导航 ========== */
        .main-nav {
            background: #fff;
            height: 78px;
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 1px solid var(--border);
            box-shadow: 0 2px 12px rgba(28, 61, 105, 0.04);
        }

        .main-nav .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .logo-text {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: 1px;
            white-space: nowrap;
        }

        .logo-icon {
            width: 38px;
            height: 38px;
            background: var(--primary);
            color: #fff;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
            box-shadow: 0 4px 12px rgba(46, 109, 180, 0.3);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .nav-links a {
            display: inline-block;
            padding: 8px 18px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-body);
            border-radius: 8px;
            transition: var(--transition);
            position: relative;
        }

        .nav-links a::after {
            content: "";
            position: absolute;
            left: 50%;
            bottom: 2px;
            width: 0;
            height: 2px;
            border-radius: 2px;
            background: var(--primary);
            transform: translateX(-50%);
            transition: width 0.3s ease;
        }

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

        .nav-links a:hover::after {
            width: 60%;
        }

        .nav-links a.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 600;
        }

        .nav-links a.active::after {
            width: 60%;
        }

        .nav-cta {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .nav-cta .btn-sm {
            padding: 8px 18px;
            font-size: 14px;
            border-radius: 8px;
            background: var(--primary);
            color: #fff;
            font-weight: 500;
            transition: var(--transition);
        }

        .nav-cta .btn-sm:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
        }

        /* 汉堡按钮 */
        .hamburger {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 40px;
            height: 40px;
            border-radius: 8px;
            cursor: pointer;
            padding: 0 8px;
        }

        .hamburger span {
            display: block;
            height: 2px;
            background: var(--text);
            border-radius: 2px;
            transition: var(--transition);
        }

        .hamburger.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .hamburger.open span:nth-child(2) {
            opacity: 0;
        }

        .hamburger.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* 移动端菜单 */
        .mobile-menu {
            display: none;
            position: fixed;
            top: 0;
            right: 0;
            width: 280px;
            height: 100vh;
            background: #fff;
            z-index: 1001;
            padding: 80px 30px 30px;
            box-shadow: -8px 0 30px rgba(28, 61, 105, 0.12);
            transform: translateX(100%);
            transition: transform 0.3s ease;
        }

        .mobile-menu.open {
            transform: translateX(0);
        }

        .mobile-menu a {
            display: block;
            padding: 14px 12px;
            font-size: 16px;
            font-weight: 500;
            color: var(--text-body);
            border-bottom: 1px solid var(--border);
            transition: var(--transition);
        }

        .mobile-menu a:hover,
        .mobile-menu a.active {
            color: var(--primary);
            background: var(--primary-light);
        }

        .menu-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(31, 41, 55, 0.5);
            z-index: 1000;
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .menu-overlay.open {
            display: block;
            opacity: 1;
        }

        /* ========== 页面横幅 ========== */
        .page-banner {
            position: relative;
            padding: 80px 0 90px;
            background: linear-gradient(135deg, rgba(234, 241, 250, 0.92) 0%, rgba(245, 247, 251, 0.75) 100%),
                url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            border-bottom: 1px solid var(--border);
        }

        .page-banner::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(255, 255, 255, 0.3);
            backdrop-filter: brightness(1.02);
        }

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

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 24px;
        }

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

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

        .breadcrumb i {
            font-size: 12px;
            color: #b0b8c5;
        }

        .page-banner h1 {
            font-size: 40px;
            font-weight: 700;
            color: var(--text);
            line-height: 1.3;
            letter-spacing: 1px;
            margin-bottom: 20px;
            max-width: 800px;
        }

        .page-banner h1 .accent-text {
            color: var(--primary);
        }

        .page-banner .banner-desc {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-body);
            max-width: 720px;
            margin-bottom: 28px;
        }

        .banner-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 28px;
        }

        .banner-tags span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            border-radius: 20px;
            background: rgba(255, 255, 255, 0.85);
            border: 1px solid var(--border);
            font-size: 13px;
            color: var(--text-body);
            backdrop-filter: blur(8px);
        }

        .banner-tags span i {
            color: var(--primary);
            font-size: 12px;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 30px;
            border-radius: var(--radius-btn);
            font-size: 16px;
            font-weight: 500;
            transition: var(--transition);
            cursor: pointer;
        }

        .btn i {
            font-size: 15px;
            transition: transform 0.3s ease;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(46, 109, 180, 0.25);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 22px rgba(46, 109, 180, 0.3);
        }

        .btn-primary:hover i {
            transform: translateX(3px);
        }

        .btn-outline {
            background: #fff;
            color: var(--primary);
            border: 1px solid var(--primary);
        }

        .btn-outline:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: 0 4px 14px rgba(46, 109, 180, 0.12);
        }

        /* ========== 通用区块 ========== */
        .section {
            padding: var(--spacer) 0;
        }

        .section-header {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            margin-bottom: 48px;
            gap: 20px;
        }

        .section-title-wrap {
            display: flex;
            align-items: flex-start;
            gap: 16px;
        }

        .section-title-bar {
            width: 4px;
            height: 32px;
            background: var(--primary);
            border-radius: 2px;
            margin-top: 6px;
            flex-shrink: 0;
        }

        .section-title {
            font-size: 30px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: 0.5px;
            line-height: 1.4;
        }

        .section-subtitle {
            margin-top: 10px;
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 620px;
        }

        .section-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            white-space: nowrap;
            transition: var(--transition);
        }

        .section-link i {
            font-size: 13px;
            transition: transform 0.3s ease;
        }

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

        .section-link:hover i {
            transform: translateX(3px);
        }

        /* ========== 简介区 ========== */
        .intro-wrap {
            display: grid;
            grid-template-columns: 1.05fr 0.95fr;
            gap: 60px;
            align-items: center;
        }

        .intro-copy h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 20px;
            line-height: 1.4;
        }

        .intro-copy p {
            font-size: 16px;
            line-height: 1.85;
            color: var(--text-body);
            margin-bottom: 16px;
        }

        .intro-list {
            margin-top: 24px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }

        .intro-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 15px;
            color: var(--text-body);
        }

        .intro-list li i {
            color: var(--primary);
            margin-top: 4px;
            font-size: 14px;
        }

        .intro-media {
            position: relative;
        }

        .intro-media img {
            width: 100%;
            height: 420px;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
        }

        .intro-media::after {
            content: "4008云顶集团官网";
            position: absolute;
            bottom: 16px;
            right: 16px;
            background: rgba(46, 109, 180, 0.88);
            color: #fff;
            padding: 6px 14px;
            font-size: 13px;
            border-radius: 20px;
            backdrop-filter: blur(6px);
        }

        /* ========== 服务卡片 ========== */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .service-card {
            background: var(--card-bg);
            border-radius: var(--radius-card);
            padding: 32px 28px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .service-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: 0;
            transition: var(--transition);
        }

        .service-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(46, 109, 180, 0.3);
        }

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

        .service-icon {
            width: 60px;
            height: 60px;
            border-radius: 16px;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
        }

        .service-icon i {
            font-size: 24px;
            color: var(--primary);
        }

        .service-icon.gold {
            background: var(--accent-light);
        }

        .service-icon.gold i {
            color: var(--accent);
        }

        .service-card h3 {
            font-size: 19px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 12px;
        }

        .service-card p {
            font-size: 15px;
            line-height: 1.75;
            color: var(--text-body);
            margin-bottom: 18px;
        }

        .service-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }

        .service-link i {
            font-size: 13px;
            transition: transform 0.3s ease;
        }

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

        .service-link:hover i {
            transform: translateX(3px);
        }

        /* 第4张卡片占位特殊处理：使用2+1排布 */
        .service-grid.four-grid {
            grid-template-columns: repeat(4, 1fr);
        }

        /* ========== 流程区 ========== */
        .process-section {
            background: linear-gradient(180deg, #fff 0%, var(--bg) 100%);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            position: relative;
        }

        .process-steps::before {
            content: "";
            position: absolute;
            top: 40px;
            left: 8%;
            right: 8%;
            height: 2px;
            background: linear-gradient(90deg, var(--primary-light), var(--accent-light), var(--primary-light));
            z-index: 0;
        }

        .process-step {
            position: relative;
            z-index: 1;
            text-align: center;
            padding: 0 12px;
        }

        .process-num {
            width: 80px;
            height: 80px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 28px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            box-shadow: 0 8px 24px rgba(46, 109, 180, 0.3);
            border: 4px solid #fff;
        }

        .process-step:nth-child(even) .process-num {
            background: var(--accent);
            box-shadow: 0 8px 24px rgba(201, 160, 99, 0.3);
        }

        .process-step h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 10px;
        }

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

        /* ========== 信任数据区 ========== */
        .trust-section {
            background: var(--primary-dark);
            padding: 64px 0;
            color: #fff;
        }

        .trust-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            text-align: center;
        }

        .trust-item .num {
            font-size: 42px;
            font-weight: 700;
            color: #fff;
            font-family: Avenir, "Inter", sans-serif;
            line-height: 1.2;
            margin-bottom: 8px;
        }

        .trust-item .num i {
            font-style: normal;
            color: var(--accent);
        }

        .trust-item .label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.8);
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 900px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--card-bg);
            border-radius: 14px;
            border: 1px solid var(--border);
            margin-bottom: 14px;
            box-shadow: 0 2px 10px rgba(28, 61, 105, 0.04);
            transition: var(--transition);
            overflow: hidden;
        }

        .faq-item:hover {
            border-color: rgba(46, 109, 180, 0.25);
        }

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

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

        .faq-item .faq-q .icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 16px;
            font-weight: 400;
            transition: var(--transition);
        }

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

        .faq-item .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
        }

        .faq-item.active .faq-a {
            max-height: 300px;
        }

        .faq-item .faq-a p {
            padding: 0 24px 22px;
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-body);
            border-top: 1px solid var(--border);
            padding-top: 16px;
        }

        /* ========== CTA ========== */
        .cta-section {
            padding: 70px 0;
        }

        .cta-card {
            background: linear-gradient(135deg, #EAF1FA 0%, #F5F7FB 100%);
            border: 1px solid rgba(46, 109, 180, 0.25);
            border-radius: 20px;
            padding: 56px 48px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
            flex-wrap: wrap;
        }

        .cta-text h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 10px;
        }

        .cta-text p {
            font-size: 15px;
            color: var(--text-muted);
        }

        .cta-form {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            min-width: 360px;
        }

        .cta-form input {
            flex: 1;
            min-width: 220px;
            height: 48px;
            padding: 0 18px;
            background: #fff;
            border: 1px solid #CBD5E1;
            border-radius: var(--radius-input);
            font-size: 15px;
            color: var(--text);
            transition: var(--transition);
        }

        .cta-form input::placeholder {
            color: #b0b8c5;
        }

        .cta-form input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(46, 109, 180, 0.15);
        }

        .cta-form .btn {
            min-width: 130px;
            height: 48px;
            justify-content: center;
        }

        .cta-note {
            width: 100%;
            margin-top: 12px;
            font-size: 13px;
            color: var(--text-muted);
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: #173A66;
            color: rgba(255, 255, 255, 0.85);
            padding-top: 64px;
        }

        .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, 0.12);
        }

        .footer-brand .logo-text {
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-brand .logo-icon {
            background: rgba(255, 255, 255, 0.15);
            color: #fff;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.7);
            max-width: 280px;
        }

        .footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 18px;
        }

        .footer-col ul li {
            margin-bottom: 10px;
        }

        .footer-col ul a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            transition: var(--transition);
        }

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

        .footer-contact p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-contact p i {
            width: 16px;
            text-align: center;
            color: var(--accent);
            font-style: normal;
        }

        .footer-bottom {
            padding: 22px 0;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
            text-align: center;
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1023px) {
            :root {
                --spacer: 68px;
            }

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

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

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

            .process-steps {
                grid-template-columns: repeat(2, 1fr);
                gap: 36px;
            }

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

            .trust-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 28px;
            }
        }

        @media (max-width: 767px) {
            :root {
                --spacer: 52px;
            }

            .container {
                padding: 0 16px;
            }

            .top-bar {
                height: 36px;
                font-size: 12px;
            }

            .top-bar-right {
                gap: 10px;
            }

            .top-bar-right .divider {
                display: none;
            }

            .top-bar-right .hide-mobile {
                display: none;
            }

            .main-nav {
                height: 64px;
            }

            .logo-text {
                font-size: 18px;
            }

            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 15px;
                border-radius: 8px;
            }

            .nav-links,
            .nav-cta {
                display: none;
            }

            .hamburger {
                display: flex;
            }

            .mobile-menu {
                display: block;
            }

            /* 移动端菜单实际上用固定定位 */
            .mobile-menu {
                display: block;
                visibility: hidden;
                opacity: 0;
            }

            .mobile-menu.open {
                visibility: visible;
                opacity: 1;
            }

            .page-banner {
                padding: 52px 0 60px;
            }

            .page-banner h1 {
                font-size: 28px;
                line-height: 1.35;
            }

            .page-banner .banner-desc {
                font-size: 15px;
                line-height: 1.7;
            }

            .banner-actions {
                flex-direction: column;
                gap: 10px;
            }

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

            .section-header {
                flex-direction: column;
                align-items: flex-start;
                margin-bottom: 32px;
            }

            .section-title {
                font-size: 24px;
            }

            .intro-wrap {
                grid-template-columns: 1fr;
                gap: 36px;
            }

            .intro-list {
                grid-template-columns: 1fr;
                gap: 12px;
            }

            .intro-media img {
                height: 260px;
            }

            .service-grid,
            .service-grid.four-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .service-card {
                padding: 26px 22px;
            }

            .process-steps {
                grid-template-columns: 1fr;
                gap: 28px;
            }

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

            .trust-item .num {
                font-size: 32px;
            }

            .cta-card {
                padding: 36px 24px;
                flex-direction: column;
                align-items: stretch;
                gap: 24px;
            }

            .cta-form {
                min-width: 0;
                flex-direction: column;
                gap: 12px;
            }

            .cta-form input {
                width: 100%;
            }

            .cta-form .btn {
                width: 100%;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
                padding-bottom: 36px;
            }

            .faq-item .faq-q {
                padding: 16px 18px;
                font-size: 15px;
            }

            .faq-item .faq-a p {
                padding: 14px 18px 18px;
                font-size: 14px;
            }
        }

        @media (max-width: 480px) {
            .top-bar-left span {
                max-width: 180px;
                overflow: hidden;
                text-overflow: ellipsis;
                white-space: nowrap;
            }

            .page-banner h1 {
                font-size: 25px;
            }

            .banner-tags span {
                font-size: 12px;
                padding: 5px 10px;
            }

            .cta-text h2 {
                font-size: 20px;
            }
        }

        /* 菜单 overlay 处理 */
        @media (max-width: 767px) {
            .menu-overlay.open {
                display: block;
            }
        }

        @media (min-width: 768px) {
            .menu-overlay.open {
                display: none !important;
            }
        }

/* roulang page: article */
:root {
  --primary: #2E6DB4;
  --primary-dark: #245A99;
  --primary-light: #EAF1FA;
  --gold: #C9A063;
  --gold-light: #F7EFDE;
  --bg: #F5F7FB;
  --white: #FFFFFF;
  --heading: #1F2937;
  --text: #3A4250;
  --muted: #7A8599;
  --border: #E5E9F0;
  --radius-card: 16px;
  --radius-btn: 10px;
  --radius-input: 10px;
  --shadow: 0 6px 24px rgba(28,61,105,0.08);
  --shadow-hover: 0 14px 32px rgba(28,61,105,0.14);
  --font: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

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

a {
  color: var(--primary);
  text-decoration: none;
  transition: all 0.25s ease;
}

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

button, input {
  font-family: inherit;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* 顶部信息条 */
.topbar {
  background: var(--primary-light);
  border-bottom: 1px solid var(--border);
  font-size: 13px;
  color: var(--muted);
}

.topbar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 38px;
}

.topbar-left {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}

.topbar-right a {
  color: var(--primary-dark);
  padding: 2px 10px;
  border-radius: 6px;
}

.topbar-right a:hover {
  background: rgba(46, 109, 180, 0.1);
}

/* 主导航 */
.site-header {
  background: var(--white);
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 76px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 24px;
  font-weight: 700;
  color: var(--heading);
  letter-spacing: 0.5px;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: var(--primary);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  font-size: 18px;
  font-weight: 700;
  flex-shrink: 0;
}

.main-nav {
  display: flex;
  gap: 6px;
  align-items: center;
}

.main-nav a {
  display: inline-block;
  padding: 8px 18px;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 500;
  color: var(--text);
}

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

.main-nav a.active {
  color: var(--primary);
  background: var(--primary-light);
  position: relative;
}

.main-nav a.active::after {
  content: "";
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 2px;
  height: 2px;
  border-radius: 2px;
  background: var(--primary);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  border: none;
  background: none;
}

.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--heading);
  border-radius: 2px;
  display: block;
  transition: all 0.3s ease;
}

/* 内页横条 Banner */
.page-banner {
  position: relative;
  min-height: 300px;
  display: flex;
  align-items: center;
  background-size: cover;
  background-position: center;
}

.banner-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(36, 90, 153, 0.92), rgba(46, 109, 180, 0.78));
}

.banner-content {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 70px 20px 96px;
  width: 100%;
}

.breadcrumb {
  color: rgba(255, 255, 255, 0.85);
  font-size: 14px;
  margin-bottom: 18px;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 2px;
  flex-wrap: wrap;
}

.breadcrumb a {
  color: rgba(255, 255, 255, 0.9);
}

.breadcrumb a:hover {
  color: #fff;
  text-decoration: underline;
}

.breadcrumb .divider {
  margin: 0 6px;
  opacity: 0.6;
}

.banner-content h1 {
  color: var(--white);
  font-size: 38px;
  font-weight: 700;
  letter-spacing: 1px;
  line-height: 1.4;
  margin-bottom: 18px;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.article-meta {
  display: flex;
  justify-content: center;
  gap: 20px;
  color: rgba(255, 255, 255, 0.92);
  font-size: 14px;
  flex-wrap: wrap;
}

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

.article-meta span::before {
  content: "◈";
  color: var(--gold);
  font-size: 12px;
}

/* 正文主体 */
.article-main {
  position: relative;
}

.article-container {
  background: var(--white);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow);
  max-width: 880px;
  margin: -48px auto 60px;
  padding: 48px 60px;
}

.article-body {
  font-size: 17px;
  line-height: 1.8;
  color: var(--text);
  word-break: break-word;
}

.article-body h2 {
  font-size: 26px;
  color: var(--heading);
  margin: 40px 0 16px;
  padding-left: 12px;
  border-left: 4px solid var(--primary);
  line-height: 1.4;
}

.article-body h3 {
  font-size: 20px;
  color: var(--heading);
  margin: 32px 0 12px;
  line-height: 1.5;
}

.article-body p {
  margin: 16px 0;
}

.article-body ul,
.article-body ol {
  margin: 16px 0 16px 26px;
}

.article-body li {
  margin-bottom: 6px;
}

.article-body blockquote {
  border-left: 4px solid var(--gold);
  background: var(--gold-light);
  padding: 16px 22px;
  margin: 24px 0;
  border-radius: 8px;
  color: var(--text);
}

.article-body img {
  border-radius: 12px;
  margin: 24px 0;
  box-shadow: var(--shadow);
}

.article-body a {
  color: var(--primary);
  text-decoration: underline;
}

.article-body a:hover {
  color: var(--primary-dark);
}

/* 内容未找到 */
.not-found {
  text-align: center;
  padding: 80px 20px;
}

.not-found-icon {
  font-size: 48px;
  color: var(--primary-light);
  display: block;
  margin-bottom: 16px;
}

.not-found h3 {
  font-size: 24px;
  color: var(--heading);
  margin-bottom: 12px;
}

.not-found p {
  color: var(--muted);
  margin-bottom: 26px;
}

/* 文末标签与翻页 */
.article-footer-wrap {
  background: var(--white);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow);
  max-width: 880px;
  margin: 0 auto 60px;
  padding: 32px 40px;
}

.article-tags {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 24px;
}

.tag-label {
  color: var(--muted);
  font-size: 14px;
  margin-right: 4px;
}

.article-tags a {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 13px;
  padding: 5px 14px;
  border-radius: 20px;
}

.article-tags a:hover {
  background: var(--primary);
  color: var(--white);
}

.prev-next {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 22px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.prev-link,
.next-link {
  color: var(--heading);
  font-weight: 600;
  font-size: 15px;
  flex: 1;
}

.next-link {
  text-align: right;
}

.prev-link span,
.next-link span {
  display: block;
  color: var(--muted);
  font-weight: 400;
  font-size: 13px;
  margin-bottom: 4px;
}

.prev-link:hover,
.next-link:hover {
  color: var(--primary);
}

.back-to-list {
  text-align: center;
  margin-top: 22px;
}

.back-to-list a {
  color: var(--muted);
  font-size: 14px;
}

.back-to-list a:hover {
  color: var(--primary);
}

/* 相关推荐 */
.related-section {
  padding: 80px 0 96px;
  background: var(--bg);
}

.section-head {
  text-align: center;
  margin-bottom: 44px;
}

.section-head h2 {
  font-size: 28px;
  color: var(--heading);
  position: relative;
  display: inline-block;
  letter-spacing: 1px;
}

.section-head h2::after {
  content: "";
  display: block;
  width: 48px;
  height: 4px;
  background: var(--primary);
  margin: 12px auto 0;
  border-radius: 2px;
}

.section-head p {
  color: var(--muted);
  margin-top: 12px;
  font-size: 15px;
}

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

.related-card {
  background: var(--white);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: all 0.3s ease;
  border: 1px solid transparent;
  display: block;
}

.related-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--primary-light);
}

.related-img {
  height: 180px;
  overflow: hidden;
}

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

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

.related-body {
  padding: 20px 24px 24px;
}

.related-body h3 {
  font-size: 18px;
  color: var(--heading);
  margin-bottom: 8px;
  font-weight: 600;
}

.related-body p {
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 14px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.read-more {
  font-size: 14px;
  color: var(--primary);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.related-card:hover .read-more {
  gap: 8px;
}

/* 页脚 */
.site-footer {
  background: #173A66;
  color: rgba(255, 255, 255, 0.85);
  padding-top: 60px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 44px;
}

.footer-brand .logo-text {
  color: var(--white);
  font-size: 22px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.footer-brand .logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  font-size: 16px;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.7);
  max-width: 340px;
}

.footer-col h4 {
  color: var(--white);
  font-size: 16px;
  margin-bottom: 16px;
  font-weight: 600;
}

.footer-col ul {
  list-style: none;
}

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 14px;
}

.footer-col a:hover {
  color: var(--gold);
}

.footer-contact p {
  font-size: 14px;
  margin-bottom: 10px;
  color: rgba(255, 255, 255, 0.7);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 20px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.55);
}

/* 响应式 */
@media (max-width: 1023px) {
  .related-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }
}

@media (max-width: 767px) {
  .container {
    padding: 0 16px;
  }

  .topbar-inner {
    min-height: 36px;
    font-size: 12px;
  }

  .topbar-right a {
    padding: 2px 6px;
  }

  .header-inner {
    min-height: 64px;
  }

  .logo {
    font-size: 20px;
  }

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

  .nav-toggle {
    display: flex;
  }

  .main-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    align-items: stretch;
    padding: 16px;
    gap: 6px;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow);
    transform: translateY(-160%);
    visibility: hidden;
    transition: transform 0.3s ease, visibility 0.3s ease;
  }

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

  .main-nav a {
    width: 100%;
    text-align: center;
    padding: 12px;
    font-size: 15px;
  }

  .main-nav a.active::after {
    left: 30px;
    right: 30px;
  }

  .page-banner {
    min-height: 250px;
  }

  .banner-content {
    padding: 50px 16px 80px;
  }

  .banner-content h1 {
    font-size: 28px;
  }

  .article-meta {
    gap: 12px;
    font-size: 13px;
  }

  .article-container {
    margin: -30px auto 40px;
    padding: 24px 20px;
  }

  .article-body {
    font-size: 16px;
  }

  .article-body h2 {
    font-size: 22px;
  }

  .article-body h3 {
    font-size: 18px;
  }

  .article-footer-wrap {
    margin: 0 auto 40px;
    padding: 24px 20px;
  }

  .prev-next {
    flex-direction: column;
    gap: 14px;
  }

  .next-link {
    text-align: left;
  }

  .related-section {
    padding: 56px 0 64px;
  }

  .related-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

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

  .footer-bottom {
    padding: 18px 16px;
    font-size: 12px;
  }
}

@media (max-width: 520px) {
  .topbar-left {
    max-width: 160px;
  }

  .topbar-right a:first-child {
    margin-left: 0;
  }

  .logo {
    font-size: 19px;
  }

  .banner-content h1 {
    font-size: 24px;
  }

  .article-meta span::before {
    display: none;
  }
}