/* roulang page: index */
/* ============================================================
           全局设计变量与基础重置
           ============================================================ */
        :root {
            --primary: #2D6A9E;
            --primary-dark: #1E4F78;
            --primary-active: #163D61;
            --primary-light: #EAF1F8;
            --accent: #E8663A;
            --success: #3A8A6E;
            --bg-main: #FFFFFF;
            --bg-alt: #F7FAFC;
            --bg-footer: #F2F5F9;
            --text-title: #1F2A37;
            --text-body: #4B5563;
            --text-muted: #7A8699;
            --text-light: #9AA6B8;
            --border: #E4E9F0;
            --radius: 12px;
            --radius-lg: 14px;
            --shadow: 0 4px 20px rgba(45, 106, 158, 0.06);
            --shadow-hover: 0 10px 30px rgba(45, 106, 158, 0.12);
            --transition: all 0.25s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background: var(--bg-main);
            color: var(--text-body);
            line-height: 1.75;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
        }

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

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

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

        /* Override Bootstrap primary */
        :root {
            --bs-primary: #2D6A9E;
            --bs-primary-rgb: 45, 106, 158;
            --bs-body-font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --bs-link-color: #2D6A9E;
            --bs-link-hover-color: #1E4F78;
        }

        .btn {
            border-radius: 8px;
            font-weight: 600;
            padding: 10px 24px;
            transition: var(--transition);
            border: none;
        }

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

        .btn-primary:hover,
        .btn-primary:focus {
            background-color: var(--primary-dark);
            box-shadow: 0 6px 16px rgba(29, 78, 120, 0.18);
            transform: translateY(-2px);
            color: #fff;
        }

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

        .btn-outline-primary {
            border: 1.5px solid var(--primary);
            color: var(--primary);
            background: transparent;
        }

        .btn-outline-primary:hover {
            background-color: rgba(45, 106, 158, 0.1);
            color: var(--primary-dark);
            border-color: var(--primary-dark);
            transform: none;
        }

        .btn-outline-primary:active {
            background-color: rgba(45, 106, 158, 0.2);
        }

        .btn-accent {
            background-color: var(--accent);
            color: #fff;
        }

        .btn-accent:hover {
            background-color: #d4552c;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(232, 102, 58, 0.2);
        }

        .text-arrow {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: var(--transition);
        }

        .text-arrow:hover {
            gap: 8px;
            color: var(--primary-dark);
        }

        /* ============================================================
           侧边栏导航
           ============================================================ */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: 280px;
            height: 100vh;
            background: #fff;
            z-index: 1040;
            box-shadow: 0 0 20px rgba(0, 0, 0, 0.03);
            display: flex;
            flex-direction: column;
            padding: 0 16px;
        }

        .sidebar-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 24px 12px 20px;
            border-bottom: 1px solid var(--border);
            margin-bottom: 16px;
        }

        .sidebar-brand-icon {
            width: 40px;
            height: 40px;
            background: var(--primary);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .sidebar-brand-text {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-title);
            letter-spacing: 1px;
            line-height: 1.2;
        }

        .sidebar-brand-sub {
            font-size: 12px;
            color: var(--text-muted);
            letter-spacing: 2px;
        }

        .sidebar-nav {
            flex: 1;
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .sidebar-nav .nav-item {
            margin-bottom: 4px;
        }

        .sidebar-nav .nav-link {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 20px;
            border-radius: 8px;
            color: var(--text-body);
            font-size: 15px;
            font-weight: 500;
            transition: var(--transition);
            border-left: 3px solid transparent;
            border-bottom: none;
        }

        .sidebar-nav .nav-link i {
            width: 20px;
            text-align: center;
            font-size: 16px;
            color: var(--text-muted);
            transition: var(--transition);
        }

        .sidebar-nav .nav-link:hover {
            background-color: rgba(45, 106, 158, 0.08);
            color: var(--primary-dark);
        }

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

        .sidebar-nav .nav-link.active {
            background-color: rgba(45, 106, 158, 0.08);
            color: var(--primary);
            border-left-color: var(--primary);
            font-weight: 600;
        }

        .sidebar-nav .nav-link.active i {
            color: var(--primary);
        }

        .sidebar-footer {
            padding: 16px 12px;
            border-top: 1px solid var(--border);
        }

        .sidebar-footer .contact-row {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            padding: 4px 0;
        }

        .sidebar-footer .contact-row i {
            color: var(--primary);
            width: 16px;
        }

        .sidebar-footer .copyright {
            font-size: 12px;
            color: var(--text-light);
            margin-top: 12px;
            text-align: left;
        }

        /* ============================================================
           移动端导航
           ============================================================ */
        .navbar-mobile {
            display: none;
            background: #fff;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
            padding: 0;
            position: sticky;
            top: 0;
            z-index: 1030;
        }

        .navbar-mobile .navbar-brand {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-title);
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 12px 16px;
        }

        .navbar-mobile .navbar-brand i {
            color: var(--primary);
            font-size: 24px;
        }

        .navbar-mobile .navbar-toggler {
            border: none;
            outline: none;
            padding: 8px 12px;
            box-shadow: none;
            background: transparent;
        }

        .navbar-mobile .navbar-toggler:focus {
            box-shadow: none;
        }

        .navbar-mobile .custom-toggler {
            display: inline-flex;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 28px;
            height: 20px;
        }

        .navbar-mobile .custom-toggler span {
            display: block;
            width: 100%;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: var(--transition);
        }

        .navbar-mobile .custom-toggler[aria-expanded="true"] span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .navbar-mobile .custom-toggler[aria-expanded="true"] span:nth-child(2) {
            opacity: 0;
        }

        .navbar-mobile .custom-toggler[aria-expanded="true"] span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .navbar-mobile .navbar-collapse {
            background: #fff;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
        }

        .navbar-mobile .navbar-nav {
            padding: 8px 0;
        }

        .navbar-mobile .nav-link {
            padding: 12px 24px;
            color: var(--text-body);
            font-size: 15px;
            border-bottom: 1px solid var(--border);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .navbar-mobile .nav-link i {
            width: 20px;
            color: var(--text-muted);
        }

        .navbar-mobile .nav-link:hover {
            background-color: rgba(45, 106, 158, 0.06);
            color: var(--primary);
        }

        .navbar-mobile .nav-link.active {
            color: var(--primary);
            font-weight: 600;
            background-color: rgba(45, 106, 158, 0.08);
        }

        /* ============================================================
           主内容区布局
           ============================================================ */
        .main-wrap {
            margin-left: 280px;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        .main-content {
            flex: 1;
            overflow: hidden;
        }

        /* ============================================================
           通用容器与区块
           ============================================================ */
        .container-custom {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 48px;
        }

        .section-block {
            padding: 72px 0;
        }

        .section-block-alt {
            padding: 72px 0;
            background-color: var(--bg-alt);
        }

        .section-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 500;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--primary);
            margin-bottom: 12px;
        }

        .section-title {
            font-size: clamp(22px, 2.5vw, 30px);
            font-weight: 700;
            color: var(--text-title);
            line-height: 1.3;
            margin-bottom: 16px;
        }

        .section-desc {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 640px;
            margin-bottom: 32px;
        }

        /* ============================================================
           Hero 区块
           ============================================================ */
        .hero-section {
            position: relative;
            background: linear-gradient(135deg, rgba(45, 106, 158, 0.06) 0%, rgba(45, 106, 158, 0.12) 100%);
            padding: 72px 0 64px;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: 20%;
            right: 8%;
            width: 180px;
            height: 180px;
            background: rgba(232, 102, 58, 0.08);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-content {
            display: flex;
            align-items: center;
            gap: 48px;
        }

        .hero-text {
            flex: 0 0 50%;
        }

        .hero-title {
            font-size: clamp(32px, 4vw, 48px);
            font-weight: 800;
            color: var(--text-title);
            line-height: 1.25;
            margin-bottom: 20px;
        }

        .hero-title .highlight {
            color: var(--primary);
        }

        .hero-subtitle {
            font-size: 17px;
            color: var(--text-body);
            line-height: 1.7;
            max-width: 38ch;
            margin-bottom: 28px;
        }

        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 20px;
        }

        .hero-note {
            font-size: 13px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .hero-note strong {
            color: var(--accent);
            font-size: 16px;
        }

        .hero-image {
            flex: 0 0 50%;
            position: relative;
        }

        .hero-image img {
            width: 100%;
            border-radius: 16px;
            box-shadow: 0 16px 40px rgba(45, 106, 158, 0.10);
            object-fit: cover;
            max-height: 400px;
        }

        .hero-float-card {
            position: absolute;
            bottom: 24px;
            left: -20px;
            background: #fff;
            border-radius: 12px;
            padding: 14px 20px;
            box-shadow: 0 8px 24px rgba(45, 106, 158, 0.12);
            display: flex;
            align-items: center;
            gap: 12px;
            animation: float-up 3s ease-in-out infinite;
        }

        .hero-float-card .fc-icon {
            width: 36px;
            height: 36px;
            background: var(--primary-light);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 16px;
        }

        .hero-float-card .fc-text {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.4;
        }

        .hero-float-card .fc-text strong {
            font-size: 16px;
            color: var(--text-title);
            display: block;
        }

        @keyframes float-up {
            0%,
            100% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(-8px);
            }
        }

        /* ============================================================
           数据条
           ============================================================ */
        .stats-bar {
            background: #fff;
            padding: 32px 0;
            border-bottom: 1px solid var(--border);
        }

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

        .stat-item {
            text-align: center;
            padding: 16px 8px;
        }

        .stat-number {
            font-size: 44px;
            font-weight: 700;
            color: var(--success);
            line-height: 1.2;
        }

        .stat-label {
            font-size: 14px;
            color: var(--text-muted);
            margin-top: 4px;
        }

        .stat-divider {
            border-left: 1px solid var(--border);
        }

        /* ============================================================
           功能卡片区
           ============================================================ */
        .features-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }

        .feature-card-main {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            padding: 36px;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            gap: 20px;
            grid-column: span 1;
            position: relative;
            overflow: hidden;
        }

        .feature-card-main:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        .feature-card-main .feature-icon {
            width: 56px;
            height: 56px;
            background: var(--primary-light);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 24px;
        }

        .feature-card-main .feature-img {
            border-radius: 10px;
            margin-top: 8px;
            max-width: 100%;
            height: 180px;
            object-fit: cover;
            width: 100%;
        }

        .feature-card-main h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-title);
            margin: 0;
        }

        .feature-card-main p {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0;
        }

        .feature-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            padding: 28px;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .feature-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        .feature-card .feature-icon {
            width: 44px;
            height: 44px;
            background: var(--primary-light);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 18px;
        }

        .feature-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-title);
            margin: 0;
        }

        .feature-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.65;
            margin: 0;
        }

        .feature-card .more-link {
            margin-top: auto;
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            color: var(--primary);
        }

        .feature-card .more-link:hover {
            gap: 8px;
            color: var(--primary-dark);
        }

        /* ============================================================
           使用场景区
           ============================================================ */
        .scenario-section {
            display: flex;
            align-items: center;
            gap: 56px;
        }

        .scenario-image {
            flex: 1;
        }

        .scenario-image img {
            border-radius: 14px;
            box-shadow: 0 12px 32px rgba(45, 106, 158, 0.08);
            max-height: 360px;
            width: 100%;
            object-fit: cover;
        }

        .scenario-content {
            flex: 1;
        }

        .scenario-cards {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-top: 24px;
        }

        .scenario-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 20px;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }

        .scenario-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        .scenario-card .sc-icon {
            width: 38px;
            height: 38px;
            background: var(--primary-light);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 16px;
            margin-bottom: 12px;
        }

        .scenario-card h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-title);
            margin: 0 0 6px 0;
        }

        .scenario-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.65;
            margin: 0;
        }

        /* ============================================================
           成功案例区
           ============================================================ */
        .cases-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }

        .case-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            overflow: hidden;
            transition: var(--transition);
        }

        .case-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        .case-card .case-img {
            width: 100%;
            height: 220px;
            object-fit: cover;
            display: block;
        }

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

        .case-card .case-title {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-title);
            margin: 0 0 12px 0;
        }

        .case-card .case-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 16px;
        }

        .case-card .case-result {
            display: flex;
            align-items: center;
            gap: 24px;
            border-top: 1px solid var(--border);
            padding-top: 16px;
        }

        .case-result-item {
            text-align: left;
        }

        .case-result-item .num {
            font-size: 28px;
            font-weight: 700;
            color: var(--success);
            line-height: 1.2;
        }

        .case-result-item .label {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* ============================================================
           价格/合作模式区
           ============================================================ */
        .pricing-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .pricing-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            padding: 32px;
            position: relative;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

        .pricing-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        .pricing-card.featured {
            border: 2px solid var(--primary);
            box-shadow: 0 8px 32px rgba(45, 106, 158, 0.14);
        }

        .pricing-badge {
            position: absolute;
            top: -12px;
            right: 20px;
            background: var(--accent);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 20px;
            letter-spacing: 1px;
        }

        .pricing-card .plan-name {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-title);
            margin-bottom: 8px;
        }

        .pricing-card .plan-price {
            font-size: 32px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 4px;
        }

        .pricing-card .plan-price small {
            font-size: 14px;
            font-weight: 400;
            color: var(--text-muted);
        }

        .pricing-card .plan-desc {
            font-size: 14px;
            color: var(--text-muted);
            border-bottom: 1px solid var(--border);
            padding-bottom: 16px;
            margin-bottom: 16px;
        }

        .pricing-card .plan-features {
            list-style: none;
            padding: 0;
            margin: 0;
            flex: 1;
        }

        .pricing-card .plan-features li {
            font-size: 14px;
            color: var(--text-body);
            padding: 6px 0;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .pricing-card .plan-features li i {
            color: var(--success);
            font-size: 14px;
        }

        .pricing-card .btn {
            margin-top: 24px;
        }

        /* ============================================================
           最新资讯 CMS 区
           ============================================================ */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .news-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 20px 24px;
            border-left: 3px solid transparent;
            transition: var(--transition);
        }

        .news-card:hover {
            box-shadow: var(--shadow-hover);
            border-left-color: var(--primary);
        }

        .news-card .news-badge {
            display: inline-block;
            height: 24px;
            line-height: 24px;
            padding: 0 10px;
            border-radius: 20px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 12px;
            font-weight: 500;
            margin-bottom: 8px;
        }

        .news-card .news-title {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-title);
            margin: 0 0 6px 0;
            line-height: 1.4;
        }

        .news-card .news-title a {
            color: var(--text-title);
        }

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

        .news-card .news-summary {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            margin: 0;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .news-card .news-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-top: 12px;
        }

        .news-card .news-meta .news-time {
            font-size: 13px;
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 4px;
        }

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

        .news-card .news-meta .news-read:hover {
            gap: 8px;
            color: var(--primary-dark);
        }

        .news-empty {
            text-align: center;
            padding: 48px 24px;
            color: var(--text-muted);
            font-size: 14px;
            background: #fff;
            border: 1px dashed var(--border);
            border-radius: var(--radius);
        }

        /* ============================================================
           FAQ 区块
           ============================================================ */
        .faq-list {
            max-width: 860px;
            margin: 0 auto;
        }

        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 12px;
            overflow: hidden;
            transition: var(--transition);
        }

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

        .faq-item .faq-question {
            width: 100%;
            background: transparent;
            border: none;
            padding: 20px 24px;
            text-align: left;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-title);
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            transition: var(--transition);
        }

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

        .faq-item .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 600;
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }

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

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

        /* ============================================================
           CTA 区块
           ============================================================ */
        .cta-section {
            background: linear-gradient(120deg, var(--primary) 0%, var(--primary-dark) 100%);
            padding: 64px 0;
            border-radius: 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -50px;
            right: -50px;
            width: 200px;
            height: 200px;
            background: rgba(255, 255, 255, 0.04);
            border-radius: 50%;
        }

        .cta-content {
            text-align: center;
            position: relative;
            z-index: 1;
        }

        .cta-content h2 {
            color: #fff;
            font-size: clamp(24px, 3vw, 36px);
            font-weight: 700;
            margin-bottom: 12px;
        }

        .cta-content p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 15px;
            max-width: 560px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }

        .cta-content .btn-light-custom {
            background: #fff;
            color: var(--primary);
            font-weight: 600;
            padding: 12px 32px;
            border-radius: 8px;
            border: none;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .cta-content .btn-light-custom:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
        }

        /* ============================================================
           页脚
           ============================================================ */
        .footer {
            background: var(--bg-footer);
            border-top: 1px solid var(--border);
            padding: 48px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.2fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 32px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
        }

        .footer-brand .brand-icon-box {
            width: 36px;
            height: 36px;
            background: var(--primary);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
        }

        .footer-brand .brand-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-title);
        }

        .footer-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 16px;
        }

        .footer-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-title);
            margin-bottom: 16px;
        }

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

        .footer-links li {
            margin-bottom: 8px;
        }

        .footer-links a {
            color: var(--text-body);
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }

        .footer-links a:hover {
            color: var(--primary);
            padding-left: 4px;
        }

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

        .footer-contact li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--text-body);
            margin-bottom: 10px;
        }

        .footer-contact li i {
            color: var(--primary);
            width: 16px;
            font-size: 14px;
        }

        .footer-bottom {
            border-top: 1px solid var(--border);
            padding: 16px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            color: var(--text-muted);
        }

        /* ============================================================
           响应式断点
           ============================================================ */
        @media (max-width: 1199.98px) {
            .container-custom {
                padding: 0 32px;
            }
            .hero-section {
                padding: 56px 0;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-divider {
                border-left: none;
            }
        }

        @media (max-width: 991.98px) {
            .sidebar {
                display: none;
            }
            .main-wrap {
                margin-left: 0;
            }
            .navbar-mobile {
                display: block;
            }
            .container-custom {
                padding: 0 20px;
            }
            .section-block,
            .section-block-alt {
                padding: 48px 0;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .scenario-section {
                flex-direction: column;
                gap: 32px;
            }
            .scenario-image {
                width: 100%;
            }
            .cases-grid {
                grid-template-columns: 1fr;
            }
            .pricing-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .pricing-card.featured {
                order: -1;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .hero-section {
                padding: 40px 0;
            }
            .hero-content {
                flex-direction: column;
                gap: 32px;
            }
            .hero-image {
                width: 100%;
                flex: 1;
            }
            .hero-image img {
                max-height: 300px;
            }
            .hero-float-card {
                left: 12px;
                bottom: 16px;
            }
        }

        @media (max-width: 767.98px) {
            .section-block,
            .section-block-alt {
                padding: 40px 0;
            }
            .hero-actions {
                flex-direction: column;
                width: 100%;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
            }
            .stat-number {
                font-size: 32px;
            }
            .scenario-cards {
                grid-template-columns: 1fr;
            }
            .feature-card-main {
                padding: 24px;
            }
            .feature-card-main .feature-img {
                height: 160px;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 8px;
                text-align: center;
            }
            .pricing-card {
                padding: 24px;
            }
        }

        @media (max-width: 575.98px) {
            .container-custom {
                padding: 0 16px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }
            .stat-number {
                font-size: 28px;
            }
            .stat-label {
                font-size: 12px;
            }
            .hero-title {
                font-size: 28px;
            }
            .hero-subtitle {
                font-size: 15px;
            }
            .hero-actions {
                flex-direction: column;
            }
            .case-card .case-body {
                padding: 20px;
            }
            .case-result-item .num {
                font-size: 22px;
            }
            .news-card {
                padding: 16px 18px;
            }
            .news-card .news-summary {
                font-size: 13px;
            }
            .btn-primary,
            .btn-outline-primary {
                width: 100%;
            }
        }

/* roulang page: category1 */
/* ============================================================
           Design Tokens / 设计变量
           ============================================================ */
        :root {
            --primary: #2D6A9E;
            --primary-dark: #1E4F78;
            --primary-active: #163D61;
            --primary-light: #EAF1F8;
            --accent: #E8663A;
            --success: #3A8A6E;
            --bg-main: #FFFFFF;
            --bg-alt: #F7FAFC;
            --bg-footer: #F2F5F9;
            --text-title: #1F2A37;
            --text-body: #4B5563;
            --text-muted: #7A8699;
            --border: #E4E9F0;
            --radius: 12px;
            --radius-lg: 16px;
            --shadow-sm: 0 4px 20px rgba(45, 106, 158, 0.06);
            --shadow-hover: 0 10px 30px rgba(45, 106, 158, 0.10);
            --font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --transition: all 0.25s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

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

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

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

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

        button,
        input,
        select,
        textarea {
            font-family: inherit;
        }

        ul,
        ol {
            list-style: none;
        }

        /* ============================================================
           Bootstrap Override - Critical
           ============================================================ */
        :root {
            --bs-primary: #2D6A9E;
            --bs-body-font-family: var(--font-family);
            --bs-body-color: #4B5563;
            --bs-body-bg: #FFFFFF;
            --bs-link-color: #2D6A9E;
            --bs-link-hover-color: #1E4F78;
            --bs-border-radius: 12px;
        }

        .btn {
            border-radius: 8px;
            font-weight: 600;
            padding: 10px 24px;
            transition: var(--transition);
            border: 0;
            font-size: 15px;
        }

        .btn-primary-custom {
            background-color: var(--primary);
            color: #fff;
            border-radius: 8px;
            padding: 11px 26px;
            font-weight: 600;
            border: none;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
        }

        .btn-primary-custom:hover {
            background-color: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(29, 78, 120, 0.18);
            border-bottom-color: transparent;
        }

        .btn-primary-custom:active {
            background-color: #174064;
            transform: translateY(0);
        }

        .btn-outline-custom {
            background: transparent;
            border: 1.5px solid var(--primary);
            color: var(--primary);
            border-radius: 8px;
            padding: 10px 24px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
        }

        .btn-outline-custom:hover {
            background: rgba(45, 106, 158, 0.10);
            color: var(--primary-dark);
            border-bottom-color: var(--primary);
        }

        .btn-outline-custom:active {
            background: rgba(45, 106, 158, 0.20);
        }

        .text-btn {
            color: var(--primary);
            font-weight: 600;
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: var(--transition);
            border-bottom: none;
        }

        .text-btn:hover {
            color: var(--primary-dark);
            gap: 8px;
            border-bottom-color: transparent;
        }

        .card {
            border: 1px solid var(--border);
            border-radius: var(--radius);
            background: #fff;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        /* Override accordion */
        .accordion {
            --bs-accordion-border-width: 0;
            --bs-accordion-border-radius: 0;
            --bs-accordion-inner-border-radius: 0;
            --bs-accordion-bg: transparent;
        }

        .accordion-item {
            background: #fff;
            border-radius: var(--radius) !important;
            margin-bottom: 12px;
            border: 1px solid var(--border) !important;
            box-shadow: var(--shadow-sm);
            overflow: hidden;
        }

        .accordion-button {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-title);
            padding: 18px 24px;
            background: #fff;
            border-bottom: 1px solid var(--border);
            box-shadow: none !important;
        }

        .accordion-button:not(.collapsed) {
            background: var(--primary-light);
            color: var(--primary);
        }

        .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(45, 106, 158, 0.12) !important;
        }

        .accordion-button::after {
            content: '+';
            background: none;
            font-size: 22px;
            font-weight: 600;
            color: var(--primary);
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: transform 0.3s ease;
            font-family: var(--font-family);
        }

        .accordion-button:not(.collapsed)::after {
            transform: rotate(45deg);
            color: var(--primary);
        }

        .accordion-body {
            padding: 18px 24px;
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-body);
        }

        /* ============================================================
           Layout
           ============================================================ */
        .container-custom {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .layout-wrapper {
            min-height: 100vh;
            display: flex;
        }

        .main-area {
            width: 100%;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            background: var(--bg-main);
        }

        /* ============================================================
           Sidebar Navigation (Desktop >=992px)
           ============================================================ */
        .sidebar {
            position: fixed;
            left: 0;
            top: 0;
            width: 280px;
            height: 100vh;
            background: #fff;
            box-shadow: 0 0 20px rgba(0, 0, 0, 0.03);
            z-index: 1030;
            display: none;
            flex-direction: column;
            padding: 24px 16px;
        }

        .sidebar-brand {
            padding: 8px 12px 20px;
            border-bottom: 1px solid var(--border);
            margin-bottom: 20px;
        }

        .sidebar-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--text-title);
            border-bottom: none;
        }

        .sidebar-logo:hover {
            color: var(--primary);
            border-bottom-color: transparent;
        }

        .sidebar-logo i {
            color: var(--primary);
            font-size: 22px;
        }

        .sidebar-brand-sub {
            font-size: 11px;
            color: var(--text-muted);
            letter-spacing: 1px;
            margin-top: 6px;
            margin-left: 36px;
            text-transform: uppercase;
        }

        .sidebar-menu {
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 4px;
            padding: 0;
        }

        .sidebar-menu li a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 20px;
            border-radius: 8px;
            color: var(--text-body);
            font-size: 15px;
            font-weight: 500;
            transition: var(--transition);
            border-bottom: none;
        }

        .sidebar-menu li a i {
            width: 20px;
            text-align: center;
            color: var(--text-muted);
            font-size: 16px;
            transition: var(--transition);
        }

        .sidebar-menu li a:hover {
            background: rgba(45, 106, 158, 0.08);
            color: var(--primary-dark);
            border-bottom-color: transparent;
        }

        .sidebar-menu li a:hover i {
            color: var(--primary);
        }

        .sidebar-menu li.active a {
            background: rgba(45, 106, 158, 0.08);
            color: var(--primary);
            font-weight: 600;
            box-shadow: inset 3px 0 0 var(--primary);
            border-radius: 8px;
        }

        .sidebar-menu li.active a i {
            color: var(--primary);
        }

        .sidebar-footer {
            border-top: 1px solid var(--border);
            padding-top: 16px;
            margin-top: 16px;
        }

        .sidebar-info {
            font-size: 13px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 6px;
            padding: 0 12px;
        }

        .sidebar-copyright {
            font-size: 12px;
            color: #9AA6B8;
            padding: 0 12px;
        }

        /* ============================================================
           Mobile Navbar
           ============================================================ */
        .navbar-mobile {
            background: #fff;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
            min-height: 64px;
            padding: 10px 16px;
            position: sticky;
            top: 0;
            z-index: 1020;
        }

        .navbar-mobile .navbar-brand {
            font-size: 19px;
            font-weight: 700;
            color: var(--text-title);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .navbar-mobile .navbar-brand i {
            color: var(--primary);
            font-size: 20px;
        }

        .navbar-mobile .custom-toggler {
            display: flex;
            flex-direction: column;
            gap: 5px;
            width: 24px;
            border: none;
            background: transparent;
            padding: 0;
        }

        .navbar-mobile .custom-toggler span {
            display: block;
            height: 2px;
            width: 100%;
            background: var(--text-title);
            border-radius: 2px;
            transition: var(--transition);
        }

        .navbar-mobile .navbar-toggler {
            border: none;
            padding: 4px;
            box-shadow: none !important;
            outline: none;
        }

        .navbar-mobile .navbar-toggler[aria-expanded="true"] .custom-toggler span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .navbar-mobile .navbar-toggler[aria-expanded="true"] .custom-toggler span:nth-child(2) {
            opacity: 0;
        }

        .navbar-mobile .navbar-toggler[aria-expanded="true"] .custom-toggler span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .navbar-mobile .navbar-nav {
            padding-top: 10px;
        }

        .navbar-mobile .nav-item {
            border-bottom: 1px solid #f0f2f5;
        }

        .navbar-mobile .nav-item:last-child {
            border-bottom: none;
        }

        .navbar-mobile .nav-link {
            padding: 14px 8px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-body);
            display: flex;
            align-items: center;
            gap: 10px;
            border-bottom: none;
        }

        .navbar-mobile .nav-link i {
            width: 20px;
            text-align: center;
            color: var(--text-muted);
        }

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

        .navbar-mobile .nav-link.active i {
            color: var(--primary);
        }

        /* ============================================================
           Hero Section
           ============================================================ */
        .page-hero {
            background: linear-gradient(135deg, rgba(45, 106, 158, 0.05) 0%, rgba(45, 106, 158, 0.10) 100%);
            padding: 72px 0 64px;
            position: relative;
            overflow: hidden;
        }

        .page-hero::before {
            content: "";
            position: absolute;
            right: -80px;
            top: -80px;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: rgba(232, 102, 58, 0.08);
            pointer-events: none;
        }

        .page-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 500;
            padding: 6px 16px;
            border-radius: 40px;
            margin-bottom: 20px;
        }

        .page-hero h1 {
            font-size: clamp(32px, 4vw, 48px);
            font-weight: 800;
            color: var(--text-title);
            line-height: 1.25;
            margin-bottom: 18px;
        }

        .page-hero .hero-sub {
            font-size: 17px;
            line-height: 1.7;
            color: var(--text-body);
            max-width: 38ch;
            margin-bottom: 28px;
        }

        .page-hero .hero-ctas {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 20px;
        }

        .hero-note {
            font-size: 14px;
            color: var(--text-muted);
        }

        .hero-note strong {
            color: var(--accent);
            font-weight: 700;
            font-size: 18px;
        }

        .hero-image-wrapper {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: 0 16px 40px rgba(45, 106, 158, 0.10);
        }

        .hero-image-wrapper img {
            width: 100%;
            min-height: 320px;
            object-fit: cover;
            border-radius: var(--radius-lg);
        }

        .hero-float-card {
            position: absolute;
            bottom: 20px;
            left: 20px;
            background: #fff;
            border-radius: 12px;
            padding: 12px 20px;
            box-shadow: 0 8px 24px rgba(45, 106, 158, 0.12);
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--text-body);
        }

        .hero-float-card .fc-num {
            font-size: 24px;
            font-weight: 800;
            color: var(--success);
        }

        /* ============================================================
           Stats Section
           ============================================================ */
        .stats-section {
            background: #fff;
            padding: 56px 0;
            border-bottom: 1px solid var(--border);
        }

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

        .stat-item {
            text-align: center;
            padding: 24px 16px;
            border-radius: var(--radius);
            background: var(--bg-alt);
            transition: var(--transition);
        }

        .stat-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }

        .stat-item .stat-num {
            font-size: 36px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }

        .stat-item .stat-label {
            font-size: 14px;
            color: var(--text-muted);
            margin-top: 6px;
        }

        /* ============================================================
           Section Headings
           ============================================================ */
        .section-head {
            margin-bottom: 40px;
        }

        .section-tag {
            display: block;
            font-size: 12px;
            font-weight: 500;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--primary);
            margin-bottom: 10px;
        }

        .section-title {
            font-size: clamp(22px, 2.5vw, 30px);
            font-weight: 700;
            color: var(--text-title);
            line-height: 1.4;
            margin-bottom: 16px;
        }

        .section-desc {
            font-size: 15px;
            color: var(--text-muted);
            max-width: 600px;
        }

        /* ============================================================
           Core Services Section
           ============================================================ */
        .services-section {
            background: var(--bg-main);
            padding: 80px 0;
        }

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

        .service-card {
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            padding: 28px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            position: relative;
        }

        .service-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        .service-card .sc-icon {
            width: 46px;
            height: 46px;
            border-radius: 12px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 16px;
        }

        .service-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-title);
            margin-bottom: 8px;
        }

        .service-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 0;
        }

        .service-card .sc-link {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            margin-top: 14px;
            transition: var(--transition);
            border-bottom: none;
        }

        .service-card .sc-link:hover {
            gap: 8px;
            color: var(--primary-dark);
        }

        /* ============================================================
           Process Section
           ============================================================ */
        .process-section {
            background: var(--bg-alt);
            padding: 80px 0;
        }

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

        .process-step {
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            padding: 28px 22px;
            position: relative;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

        .process-step:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        .process-step .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 14px;
            font-weight: 700;
            margin-bottom: 14px;
        }

        .process-step h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-title);
            margin-bottom: 6px;
        }

        .process-step p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ============================================================
           Scenarios Section
           ============================================================ */
        .scenario-section {
            background: #fff;
            padding: 80px 0;
        }

        .scenario-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

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

        .scenario-item {
            background: var(--bg-alt);
            border-radius: var(--radius);
            padding: 20px;
            transition: var(--transition);
        }

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

        .scenario-item .si-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            margin-bottom: 12px;
        }

        .scenario-item h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-title);
            margin-bottom: 6px;
        }

        .scenario-item p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 0;
        }

        .scenario-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: 0 16px 40px rgba(45, 106, 158, 0.10);
            position: relative;
        }

        .scenario-image img {
            width: 100%;
            height: 360px;
            object-fit: cover;
        }

        /* ============================================================
           Info Cards (Static News Cards)
           ============================================================ */
        .info-section {
            background: var(--bg-alt);
            padding: 80px 0;
        }

        .info-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .info-card-row {
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            padding: 22px 24px;
            display: flex;
            align-items: center;
            gap: 20px;
            transition: var(--transition);
            position: relative;
            box-shadow: var(--shadow-sm);
        }

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

        .info-card-row::before {
            content: "";
            position: absolute;
            left: 0;
            top: 20%;
            height: 60%;
            width: 3px;
            background: var(--primary);
            border-radius: 0 3px 3px 0;
            opacity: 0;
            transition: var(--transition);
        }

        .info-card-row:hover::before {
            opacity: 1;
        }

        .info-badge {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 12px;
            font-weight: 500;
            padding: 3px 12px;
            border-radius: 20px;
            white-space: nowrap;
        }

        .info-card-row .info-title {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-title);
            flex: 1;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .info-card-row .info-summary {
            font-size: 14px;
            color: var(--text-muted);
            max-width: 380px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .info-card-row .info-time {
            font-size: 13px;
            color: #9AA6B8;
            white-space: nowrap;
        }

        .info-card-row .text-btn {
            white-space: nowrap;
        }

        /* ============================================================
           FAQ Section
           ============================================================ */
        .faq-section {
            background: #fff;
            padding: 80px 0;
        }

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

        /* ============================================================
           CTA Section
           ============================================================ */
        .cta-section {
            padding: 64px 0;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            left: -60px;
            bottom: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.05);
        }

        .cta-inner {
            text-align: center;
            position: relative;
            z-index: 1;
        }

        .cta-inner h2 {
            font-size: clamp(24px, 3vw, 34px);
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }

        .cta-inner p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.9);
            max-width: 520px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }

        .cta-inner .btn-white {
            background: #fff;
            color: var(--primary);
            border-radius: 8px;
            padding: 12px 32px;
            font-weight: 600;
            font-size: 16px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
            border: none;
        }

        .cta-inner .btn-white:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
            border-bottom-color: transparent;
        }

        /* ============================================================
           Footer
           ============================================================ */
        .footer {
            background: var(--bg-footer);
            border-top: 1px solid var(--border);
            padding-top: 48px;
            margin-top: auto;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 36px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
        }

        .footer-brand .brand-icon-box {
            width: 34px;
            height: 34px;
            border-radius: 8px;
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: 17px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .footer-brand .brand-text {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-title);
        }

        .footer-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 12px;
            max-width: 320px;
        }

        .footer-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-title);
            margin-bottom: 16px;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 4px;
            padding: 0;
            margin: 0;
            list-style: none;
        }

        .footer-links li a {
            display: block;
            padding: 4px 0;
            font-size: 14px;
            color: var(--text-body);
            transition: var(--transition);
            border-bottom: none;
        }

        .footer-links li a:hover {
            color: var(--primary);
            padding-left: 4px;
            border-bottom-color: transparent;
        }

        .footer-contact {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-contact li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--text-body);
        }

        .footer-contact li i {
            width: 18px;
            color: var(--primary);
            font-size: 15px;
            text-align: center;
        }

        .footer-bottom {
            border-top: 1px solid var(--border);
            padding: 18px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 13px;
            color: #9AA6B8;
        }

        /* ============================================================
           Responsive
           ============================================================ */
        @media (min-width: 992px) {
            .sidebar {
                display: flex;
            }

            .main-area {
                margin-left: 280px;
            }

            .navbar-mobile {
                display: none !important;
            }
        }

        @media (max-width: 991.98px) {
            .page-hero {
                padding: 48px 0 48px;
            }

            .hero-image-wrapper {
                margin-top: 32px;
            }

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

            .scenario-image img {
                height: 280px;
            }

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

        @media (max-width: 768px) {
            .page-hero {
                padding: 40px 0;
            }

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

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

            .page-hero .hero-ctas .btn {
                width: 100%;
                justify-content: center;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

            .stats-section {
                padding: 40px 0;
            }

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

            .services-section,
            .process-section,
            .scenario-section,
            .info-section,
            .faq-section {
                padding: 48px 0;
            }

            .scenario-content .scenario-list {
                grid-template-columns: 1fr;
            }

            .info-card-row {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
                padding: 20px;
            }

            .info-card-row .info-summary {
                max-width: 100%;
                white-space: normal;
            }

            .info-card-row .info-title {
                white-space: normal;
            }

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

            .container-custom {
                padding: 0 16px;
            }
        }

        @media (max-width: 520px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }

            .stat-item .stat-num {
                font-size: 28px;
            }

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

            .page-hero .hero-sub {
                font-size: 16px;
            }

            .hero-note {
                font-size: 13px;
            }

            .section-title {
                font-size: 22px;
            }

            .service-card,
            .process-step {
                padding: 20px;
            }

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

/* roulang page: article */
:root {
            --bs-primary: #2D6A9E;
            --bs-primary-rgb: 45, 106, 158;
            --bs-body-font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --primary: #2D6A9E;
            --primary-dark: #1E4F78;
            --primary-deeper: #163D61;
            --primary-light: #EAF1F8;
            --secondary: #E8663A;
            --success: #3A8A6E;
            --bg-main: #FFFFFF;
            --bg-alt: #F7FAFC;
            --bg-footer: #F2F5F9;
            --text-title: #1F2A37;
            --text-body: #4B5563;
            --text-muted: #7A8699;
            --border: #E4E9F0;
            --radius: 12px;
            --radius-lg: 14px;
            --shadow: 0 4px 20px rgba(45, 106, 158, 0.06);
            --shadow-hover: 0 10px 30px rgba(45, 106, 158, 0.10);
            --font-main: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            font-family: var(--font-main);
            background: var(--bg-main);
            color: var(--text-body);
            line-height: 1.8;
            font-size: 15px;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.2s ease, border-color 0.2s ease;
        }
        a:hover {
            color: var(--primary-dark);
            border-bottom: 1px solid currentColor;
        }
        img {
            max-width: 100%;
            height: auto;
        }
        button,
        input {
            font-family: inherit;
        }
        .app-layout {
            display: flex;
            min-height: 100vh;
        }
        .sidebar {
            width: 280px;
            flex-shrink: 0;
            background: #fff;
            padding: 24px 20px;
            box-shadow: 0 0 20px rgba(0, 0, 0, 0.03);
            display: flex;
            flex-direction: column;
            position: fixed;
            top: 0;
            bottom: 0;
            left: 0;
            z-index: 100;
            border-right: 1px solid var(--border);
        }
        .sidebar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 12px 8px 20px;
            border-bottom: 1px solid var(--border);
            margin-bottom: 8px;
        }
        .sidebar-brand:hover {
            border-bottom: 1px solid var(--border);
        }
        .brand-icon-box {
            width: 42px;
            height: 42px;
            background: var(--primary);
            color: #fff;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 800;
            flex-shrink: 0;
            box-shadow: 0 4px 12px rgba(45, 106, 158, 0.25);
        }
        .brand-text {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-title);
            letter-spacing: 1px;
        }
        .sidebar-nav {
            list-style: none;
            padding: 16px 0;
            margin: 0;
            flex: 1;
        }
        .sidebar-nav li {
            margin-bottom: 4px;
        }
        .sidebar-nav a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 16px;
            border-radius: 8px;
            color: var(--text-body);
            font-size: 15px;
            font-weight: 500;
            transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
            border-left: 3px solid transparent;
            border-bottom: none;
        }
        .sidebar-nav a i {
            width: 20px;
            text-align: center;
            color: var(--text-muted);
            font-size: 16px;
            transition: color 0.2s;
        }
        .sidebar-nav a:hover {
            background: var(--primary-light);
            color: var(--primary);
            border-left: 3px solid transparent;
            border-bottom: none;
        }
        .sidebar-nav a:hover i {
            color: var(--primary);
        }
        .sidebar-nav a.active {
            background: var(--primary-light);
            color: var(--primary);
            font-weight: 600;
            border-left: 3px solid var(--primary);
            border-bottom: none;
        }
        .sidebar-nav a.active i {
            color: var(--primary);
        }
        .sidebar-footer {
            border-top: 1px solid var(--border);
            padding-top: 20px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .sidebar-footer .contact-item {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 8px;
        }
        .sidebar-footer .contact-item i {
            width: 16px;
            color: var(--primary);
            font-size: 13px;
        }
        .sidebar-copyright {
            margin-top: 12px;
            padding-top: 12px;
            border-top: 1px solid var(--border);
            font-size: 12px;
            color: var(--text-muted);
        }
        .main-wrapper {
            flex: 1;
            margin-left: 280px;
            display: flex;
            flex-direction: column;
            min-width: 0;
        }
        .content {
            flex: 1;
            padding: 40px 48px;
        }
        .container-custom {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .navbar-mobile {
            display: none !important;
        }
        .breadcrumb-nav {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 32px;
        }
        .breadcrumb-nav a {
            color: var(--text-muted);
            border-bottom: none;
        }
        .breadcrumb-nav a:hover {
            color: var(--primary);
            border-bottom: none;
        }
        .breadcrumb-nav i {
            font-size: 12px;
            color: var(--text-muted);
        }
        .breadcrumb-current {
            display: inline-block;
            max-width: 260px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
            vertical-align: bottom;
            color: var(--text-title);
            font-weight: 500;
        }
        .article-container {
            max-width: 780px;
            margin: 0 auto;
        }
        .article-header {
            margin-bottom: 32px;
            padding-bottom: 24px;
            border-bottom: 1px solid var(--border);
        }
        .article-header h1 {
            font-size: clamp(26px, 3vw, 36px);
            font-weight: 700;
            color: var(--text-title);
            line-height: 1.35;
            margin: 0 0 16px;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            font-size: 14px;
            color: var(--text-muted);
            align-items: center;
        }
        .article-meta .cat-badge {
            background: var(--primary-light);
            color: var(--primary);
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.5px;
        }
        .article-meta i {
            margin-right: 4px;
            font-size: 13px;
        }
        .article-body {
            font-size: 16px;
            line-height: 1.85;
            color: var(--text-body);
        }
        .article-body p {
            margin-bottom: 1.8em;
        }
        .article-body h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-title);
            margin: 2.2em 0 1em;
            line-height: 1.4;
        }
        .article-body h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-title);
            margin: 2em 0 0.9em;
            line-height: 1.4;
        }
        .article-body h4 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-title);
            margin: 1.8em 0 0.8em;
        }
        .article-body blockquote {
            border-left: 4px solid var(--primary);
            background: var(--bg-alt);
            padding: 16px 24px;
            border-radius: 0 8px 8px 0;
            margin: 24px 0;
            font-size: 15px;
            color: var(--text-body);
        }
        .article-body img {
            border-radius: 8px;
            box-shadow: var(--shadow);
            margin: 16px 0;
        }
        .article-body ul,
        .article-body ol {
            margin: 16px 0;
            padding-left: 24px;
        }
        .article-body ul li {
            list-style: none;
            position: relative;
            padding-left: 18px;
            margin-bottom: 8px;
        }
        .article-body ul li::before {
            content: "";
            position: absolute;
            left: 0;
            top: 11px;
            width: 8px;
            height: 8px;
            background: var(--primary);
            border-radius: 2px;
        }
        .article-body ol li {
            margin-bottom: 8px;
        }
        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            font-size: 14px;
        }
        .article-body th,
        .article-body td {
            border: 1px solid var(--border);
            padding: 10px 14px;
            text-align: left;
        }
        .article-body th {
            background: var(--bg-alt);
            font-weight: 600;
            color: var(--text-title);
        }
        .article-body a {
            color: var(--primary);
            border-bottom: 1px solid var(--primary);
        }
        .article-body a:hover {
            color: var(--primary-dark);
            border-bottom-color: var(--primary-dark);
        }
        .post-footer-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-top: 40px;
            padding-top: 20px;
            border-top: 1px solid var(--border);
            font-size: 13px;
            color: var(--text-muted);
        }
        .post-footer-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .post-pager {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
            margin: 40px 0 24px;
        }
        .pager-item {
            display: block;
            padding: 20px 24px;
            background: var(--bg-alt);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            transition: all 0.25s ease;
            border-bottom: 1px solid var(--border);
        }
        .pager-item:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
            border-bottom: 1px solid var(--primary);
        }
        .pager-label {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 6px;
        }
        .pager-title {
            display: block;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-title);
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }
        .pager-item.text-end .pager-label {
            justify-content: flex-end;
        }
        .related-posts {
            margin-top: 48px;
            padding-top: 36px;
            border-top: 1px solid var(--border);
        }
        .section-label {
            display: inline-block;
            font-size: 12px;
            font-weight: 500;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--primary);
            margin-bottom: 8px;
        }
        .related-posts h2 {
            font-size: clamp(22px, 2.5vw, 28px);
            font-weight: 700;
            color: var(--text-title);
            margin-bottom: 28px;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            display: block;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: all 0.25s ease;
            border-bottom: 1px solid var(--border);
        }
        .related-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            border-bottom: 1px solid var(--primary);
        }
        .related-card img {
            width: 100%;
            height: 168px;
            object-fit: cover;
            display: block;
        }
        .related-card-body {
            padding: 18px 20px 20px;
        }
        .related-card-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-title);
            line-height: 1.5;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card-summary {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin: 0;
        }
        .empty-content {
            text-align: center;
            padding: 80px 20px;
            background: var(--bg-alt);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
        }
        .empty-content .icon {
            font-size: 48px;
            color: var(--text-muted);
            margin-bottom: 16px;
        }
        .empty-content h2 {
            font-size: 24px;
            color: var(--text-title);
            font-weight: 700;
            margin-bottom: 12px;
        }
        .empty-content p {
            color: var(--text-muted);
            margin-bottom: 24px;
            max-width: 420px;
            margin-left: auto;
            margin-right: auto;
        }
        .btn-primary-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            padding: 12px 30px;
            border: none;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.25s ease;
            box-shadow: 0 4px 12px rgba(45, 106, 158, 0.18);
        }
        .btn-primary-custom:hover {
            background: var(--primary-dark);
            color: #fff;
            box-shadow: 0 6px 16px rgba(29, 78, 120, 0.20);
            transform: translateY(-2px);
            border-bottom: none;
        }
        .btn-primary-custom:active {
            background: var(--primary-deeper);
            transform: translateY(0);
        }
        .footer {
            background: var(--bg-footer);
            border-top: 1px solid var(--border);
            padding: 48px 0 24px;
            margin-top: auto;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.9fr 1fr;
            gap: 40px;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
        }
        .footer-brand .brand-icon-box {
            width: 36px;
            height: 36px;
            font-size: 16px;
        }
        .footer-brand .brand-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-title);
        }
        .footer-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 14px;
            max-width: 320px;
        }
        .footer-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-title);
            margin-bottom: 16px;
        }
        .footer-links,
        .footer-contact {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li,
        .footer-contact li {
            margin-bottom: 10px;
            font-size: 14px;
            color: var(--text-body);
        }
        .footer-links a {
            color: var(--text-body);
            font-size: 14px;
            transition: color 0.2s;
            border-bottom: none;
        }
        .footer-links a:hover {
            color: var(--primary);
            border-bottom: none;
        }
        .footer-contact i {
            width: 18px;
            color: var(--primary);
            font-size: 14px;
            margin-right: 4px;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
            border-top: 1px solid var(--border);
            margin-top: 36px;
            padding-top: 20px;
            font-size: 13px;
            color: var(--text-muted);
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        @media (max-width: 1199.98px) {
            .content {
                padding: 32px 28px;
            }
        }
        @media (max-width: 991.98px) {
            .sidebar {
                display: none !important;
            }
            .main-wrapper {
                margin-left: 0;
            }
            .navbar-mobile {
                display: flex !important;
                background: #fff;
                box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
                min-height: 64px;
                padding: 0 16px;
                border: none;
                position: sticky;
                top: 0;
                z-index: 99;
            }
            .navbar-mobile .container-fluid {
                padding: 0;
            }
            .navbar-mobile .navbar-brand {
                display: flex;
                align-items: center;
                gap: 8px;
                font-size: 20px;
                font-weight: 700;
                color: var(--text-title);
                border-bottom: none;
            }
            .navbar-mobile .navbar-brand i {
                color: var(--primary);
                font-size: 22px;
            }
            .navbar-mobile .navbar-toggler {
                border: none;
                padding: 8px;
                box-shadow: none;
                background: transparent;
            }
            .navbar-mobile .navbar-toggler:focus {
                box-shadow: 0 0 0 3px rgba(45, 106, 158, 0.15);
            }
            .custom-toggler {
                display: flex;
                flex-direction: column;
                gap: 6px;
                width: 24px;
            }
            .custom-toggler span {
                display: block;
                height: 2px;
                background: var(--text-title);
                border-radius: 2px;
                width: 100%;
            }
            .navbar-mobile .navbar-collapse {
                background: #fff;
                padding: 12px 8px 16px;
                border-radius: 0 0 12px 12px;
                box-shadow: 0 8px 20px rgba(0, 0, 0, 0.06);
            }
            .navbar-mobile .navbar-nav {
                padding: 0;
            }
            .navbar-mobile .nav-link {
                padding: 13px 16px;
                font-size: 15px;
                font-weight: 500;
                color: var(--text-body);
                border-bottom: 1px solid var(--border);
                border-radius: 8px;
                display: flex;
                align-items: center;
                gap: 10px;
            }
            .navbar-mobile .nav-link:last-child {
                border-bottom: none;
            }
            .navbar-mobile .nav-link i {
                width: 18px;
                text-align: center;
                color: var(--text-muted);
            }
            .navbar-mobile .nav-link.active {
                color: var(--primary);
                font-weight: 600;
                background: var(--primary-light);
                border-bottom: 1px solid transparent;
            }
            .navbar-mobile .nav-link.active i {
                color: var(--primary);
            }
            .content {
                padding: 28px 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
                padding: 0 20px;
            }
            .footer-bottom {
                padding-left: 20px;
                padding-right: 20px;
            }
        }
        @media (max-width: 767.98px) {
            .related-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .post-pager {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .breadcrumb-nav {
                margin-bottom: 20px;
                font-size: 12px;
            }
            .breadcrumb-current {
                max-width: 180px;
            }
            .article-header {
                margin-bottom: 24px;
                padding-bottom: 18px;
            }
            .article-header h1 {
                font-size: 24px;
                margin-bottom: 12px;
            }
            .article-meta {
                gap: 12px;
                font-size: 13px;
            }
            .article-body {
                font-size: 15px;
                line-height: 1.8;
            }
            .article-body h2 {
                font-size: 20px;
            }
            .article-body h3 {
                font-size: 17px;
            }
            .post-footer-meta {
                gap: 8px;
                font-size: 12px;
                flex-direction: column;
            }
            .related-card img {
                height: 150px;
            }
            .related-posts {
                margin-top: 32px;
                padding-top: 24px;
            }
            .btn-primary-custom {
                width: 100%;
                justify-content: center;
            }
        }
        @media (max-width: 520px) {
            .content {
                padding: 20px 16px;
            }
            .container-custom {
                padding: 0 8px;
            }
            .breadcrumb-nav {
                gap: 4px;
            }
            .breadcrumb-nav i {
                font-size: 10px;
            }
            .article-header h1 {
                font-size: 22px;
            }
            .article-meta {
                gap: 8px;
            }
            .article-meta .cat-badge {
                padding: 3px 10px;
                font-size: 11px;
            }
            .footer {
                padding: 32px 0 20px;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #2D6A9E;
            --primary-deep: #1E4F78;
            --primary-active: #163D61;
            --primary-light: #EAF1F8;
            --accent: #E8663A;
            --success: #3A8A6E;
            --bg-main: #FFFFFF;
            --bg-alt: #F7FAFC;
            --bg-footer: #F2F5F9;
            --text-title: #1F2A37;
            --text-body: #4B5563;
            --text-muted: #7A8699;
            --text-faint: #9AA6B8;
            --border-color: #E4E9F0;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --shadow-sm: 0 4px 20px rgba(45, 106, 158, 0.06);
            --shadow-md: 0 10px 30px rgba(45, 106, 158, 0.10);
            --shadow-lg: 0 16px 40px rgba(45, 106, 158, 0.12);
            --transition: 0.25s ease;
            --font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-main);
            -webkit-font-smoothing: antialiased;
        }

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

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

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

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

        .container-custom {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 48px;
        }

        .layout-wrapper {
            display: flex;
            min-height: 100vh;
        }

        .sidebar-nav {
            width: 280px;
            flex-shrink: 0;
            background: #fff;
            box-shadow: 0 0 20px rgba(0, 0, 0, 0.03);
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            z-index: 1040;
            display: flex;
            flex-direction: column;
            padding: 24px 16px;
        }

        .sidebar-nav .brand-wrap {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 8px 12px 20px;
            border-bottom: 1px solid var(--border-color);
            margin-bottom: 24px;
        }

        .brand-logo-desk {
            width: 36px;
            height: 36px;
            background: var(--primary-light);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 800;
            color: var(--primary);
            position: relative;
        }

        .brand-logo-desk::before {
            content: "";
            position: absolute;
            left: -4px;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 22px;
            background: var(--primary);
            border-radius: 2px;
        }

        .brand-logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-title);
            letter-spacing: 1px;
        }

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

        .nav-desktop {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 4px;
            flex: 1;
        }

        .nav-desktop .nav-d-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 20px;
            border-radius: var(--radius-sm);
            color: var(--text-body);
            font-size: 15px;
            font-weight: 500;
            transition: all var(--transition);
            border-left: 3px solid transparent;
            position: relative;
        }

        .nav-desktop .nav-d-item i {
            width: 20px;
            text-align: center;
            font-size: 16px;
        }

        .nav-desktop .nav-d-item:hover {
            background: rgba(45, 106, 158, 0.08);
            color: var(--primary);
        }

        .nav-desktop .nav-d-item.active {
            background: rgba(45, 106, 158, 0.06);
            color: var(--primary);
            border-left-color: var(--primary);
            font-weight: 600;
        }

        .nav-desktop .nav-d-item.active::after {
            content: "";
            position: absolute;
            right: 12px;
            top: 50%;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent);
            transform: translateY(-50%);
        }

        .sidebar-contact {
            padding: 16px 12px 8px;
            border-top: 1px solid var(--border-color);
            font-size: 13px;
            color: var(--text-muted);
        }

        .sidebar-contact div {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 8px;
        }

        .main-content {
            margin-left: 280px;
            flex: 1;
            min-width: 0;
        }

        .navbar-mobile {
            display: none;
            background: #fff;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
            height: 64px;
            padding: 0 24px;
        }

        .navbar-mobile .navbar-brand {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-title);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .navbar-mobile .navbar-brand i {
            color: var(--primary);
        }

        .navbar-mobile .navbar-brand .brand-icon-box {
            width: 32px;
            height: 32px;
            background: var(--primary-light);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--primary);
            font-weight: 700;
        }

        .custom-toggler {
            display: flex;
            flex-direction: column;
            gap: 5px;
            padding: 6px;
        }

        .custom-toggler span {
            width: 22px;
            height: 2px;
            background: var(--text-title);
            border-radius: 2px;
            display: block;
        }

        .navbar-mobile .navbar-toggler {
            border: none;
            box-shadow: none !important;
        }

        .navbar-mobile .collapse {
            background: #fff;
            border-radius: 0 0 12px 12px;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.05);
            padding: 8px 0;
        }

        .navbar-mobile .nav-link {
            padding: 12px 24px;
            font-weight: 500;
            color: var(--text-body);
            border-bottom: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .navbar-mobile .nav-link i {
            width: 18px;
            text-align: center;
            color: var(--primary);
        }

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

        /* Hero 区块 */
        .catHero {
            position: relative;
            padding: 80px 0 60px;
            background: linear-gradient(135deg, rgba(45, 106, 158, 0.05) 0%, rgba(45, 106, 158, 0.10) 100%);
            overflow: hidden;
        }

        .catHero::before {
            content: "";
            position: absolute;
            right: -80px;
            top: -80px;
            width: 320px;
            height: 320px;
            border-radius: 50%;
            background: rgba(232, 102, 58, 0.08);
            pointer-events: none;
        }

        .catHero-inner {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 48px;
            align-items: center;
        }

        .catHero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(45, 106, 158, 0.10);
            color: var(--primary);
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
            margin-bottom: 20px;
        }

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

        .catHero h1 {
            font-size: clamp(30px, 3.5vw, 44px);
            font-weight: 800;
            line-height: 1.25;
            color: var(--text-title);
            margin-bottom: 20px;
        }

        .catHero h1 .accent-color {
            color: var(--primary);
        }

        .catHero p {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-body);
            max-width: 42ch;
            margin-bottom: 32px;
        }

        .catHero-stats {
            display: flex;
            gap: 32px;
            margin-top: 36px;
        }

        .catHero-stats .item {
            text-align: left;
        }

        .catHero-stats .num {
            font-size: 32px;
            font-weight: 800;
            color: var(--success);
            line-height: 1.2;
        }

        .catHero-stats .label {
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 4px;
        }

        .catHero-img {
            position: relative;
        }

        .catHero-img img {
            width: 100%;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            display: block;
        }

        .float-card {
            position: absolute;
            bottom: 20px;
            left: -20px;
            background: #fff;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-md);
            padding: 12px 20px;
            display: flex;
            align-items: center;
            gap: 12px;
            border: 1px solid var(--border-color);
        }

        .float-card i {
            font-size: 22px;
            color: var(--primary);
        }

        .float-card .fc-content {
            line-height: 1.3;
        }

        .float-card .fc-title {
            font-size: 13px;
            font-weight: 600;
            color: var(--text-title);
        }

        .float-card .fc-sub {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* 板块标题 */
        .section-label {
            display: block;
            font-size: 13px;
            font-weight: 500;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--primary);
            margin-bottom: 10px;
        }

        .section-title {
            font-size: clamp(22px, 2.5vw, 30px);
            font-weight: 700;
            color: var(--text-title);
            line-height: 1.3;
            margin-bottom: 16px;
        }

        .section-desc {
            font-size: 15px;
            color: var(--text-muted);
            max-width: 640px;
        }

        /* 内容卡片 */
        .article-card {
            display: flex;
            background: #fff;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            overflow: hidden;
            padding: 20px;
            transition: all var(--transition);
            position: relative;
        }

        .article-card::before {
            content: "";
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 4px;
            background: var(--primary);
            opacity: 0;
            transition: opacity var(--transition);
        }

        .article-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }

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

        .article-card-body {
            flex: 1;
            padding-left: 20px;
        }

        .article-card-body.no-border {
            padding-left: 0;
        }

        .article-card.no-border::before {
            display: none;
        }

        .badge-cat {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 12px;
            font-weight: 500;
            padding: 3px 12px;
            border-radius: 20px;
            margin-bottom: 8px;
            letter-spacing: 0.3px;
        }

        .article-card .card-title {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-title);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .article-card .card-excerpt {
            font-size: 14px;
            color: var(--text-muted);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 12px;
        }

        .article-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--text-faint);
        }

        .article-card .read-more {
            color: var(--primary);
            font-weight: 500;
            font-size: 14px;
            transition: all var(--transition);
        }

        .article-card .read-more i {
            margin-left: 4px;
            transition: transform var(--transition);
        }

        .article-card .read-more:hover i {
            transform: translateX(4px);
        }

        /* 数据区块 */
        .stats-band {
            background: var(--bg-alt);
            padding: 56px 0;
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }

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

        .stats-grid .stat-item {
            padding: 24px 16px;
            background: #fff;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }

        .stats-grid .stat-num {
            font-size: 38px;
            font-weight: 800;
            color: var(--success);
            line-height: 1.3;
        }

        .stats-grid .stat-label {
            font-size: 14px;
            color: var(--text-muted);
            margin-top: 6px;
        }

        /* 图文区域 */
        .feature-split {
            padding: 72px 0;
        }

        .feature-split .split-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
        }

        .feature-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-top: 28px;
        }

        .feature-item {
            display: flex;
            gap: 14px;
            align-items: flex-start;
            padding: 20px;
            background: var(--bg-alt);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            transition: all var(--transition);
        }

        .feature-item:hover {
            box-shadow: var(--shadow-md);
            border-color: rgba(45, 106, 158, 0.2);
        }

        .feature-item i {
            font-size: 20px;
            color: var(--primary);
            margin-top: 4px;
        }

        .feature-item h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-title);
            margin-bottom: 4px;
        }

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

        .rating-list {
            list-style: none;
        }

        .rating-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 10px 0;
            font-size: 15px;
            color: var(--text-body);
        }

        .rating-list li i {
            color: var(--success);
            margin-top: 4px;
        }

        /* 案例卡片 */
        .cases-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }

        .case-card {
            background: #fff;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: all var(--transition);
        }

        .case-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }

        .case-card img {
            width: 100%;
            height: 200px;
            object-fit: cover;
        }

        .case-card .case-body {
            padding: 24px;
        }

        .case-card h4 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-title);
            margin-bottom: 8px;
        }

        .case-card .case-result {
            font-size: 28px;
            font-weight: 800;
            color: var(--success);
            margin-top: 12px;
        }

        .case-card .case-sub {
            font-size: 14px;
            color: var(--text-muted);
        }

        /* CTA 区块 */
        .cta-zone {
            background: var(--bg-alt);
            padding: 64px 0;
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }

        .cta-box {
            background: var(--primary);
            border-radius: var(--radius-lg);
            padding: 48px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .cta-box::before {
            content: "";
            position: absolute;
            right: -40px;
            top: -40px;
            width: 160px;
            height: 160px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.1);
        }

        .cta-box h2 {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 12px;
            color: #fff;
        }

        .cta-box p {
            font-size: 16px;
            opacity: 0.9;
            margin-bottom: 24px;
        }

        .btn-light-custom {
            background: #fff;
            color: var(--primary);
            border: none;
            border-radius: var(--radius-sm);
            padding: 12px 32px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: all var(--transition);
        }

        .btn-light-custom:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(255, 255, 255, 0.2);
        }

        /* FAQ */
        .faq-section {
            padding: 72px 0;
            background: var(--bg-alt);
        }

        .accordion-custom {
            max-width: 780px;
            margin: 0 auto;
        }

        .accordion-item-custom {
            background: #fff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }

        .accordion-header-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-title);
            background: #fff;
            border: none;
            width: 100%;
            text-align: left;
            transition: all var(--transition);
        }

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

        .accordion-icon {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            flex-shrink: 0;
            transition: transform var(--transition);
        }

        .accordion-header-custom.open .accordion-icon {
            transform: rotate(45deg);
        }

        .accordion-content-custom {
            display: none;
            padding: 0 24px 20px;
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-body);
        }

        .accordion-content-custom.active {
            display: block;
        }

        /* 内容列表 */
        .content-list-section {
            padding: 72px 0;
        }

        .content-list-header {
            display: flex;
            justify-content: space-between;
            align-items: flex-end;
            margin-bottom: 32px;
            flex-wrap: wrap;
            gap: 16px;
        }

        /* Footer */
        .footer {
            background: var(--bg-footer);
            border-top: 1px solid var(--border-color);
            padding: 48px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
        }

        .brand-icon-box {
            width: 34px;
            height: 34px;
            background: var(--primary);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            color: #fff;
            font-weight: 700;
        }

        .brand-text {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-title);
        }

        .footer-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 12px;
        }

        .footer-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-title);
            margin-bottom: 12px;
        }

        .footer-links,
        .footer-contact {
            list-style: none;
            padding: 0;
        }

        .footer-links li,
        .footer-contact li {
            padding: 4px 0;
            font-size: 14px;
            color: var(--text-body);
        }

        .footer-links a {
            color: var(--text-body);
        }

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

        .footer-contact i {
            width: 18px;
            color: var(--primary);
            margin-right: 6px;
        }

        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            font-size: 13px;
            color: var(--text-muted);
            flex-wrap: wrap;
            gap: 8px;
        }

        /* 按钮 */
        .btn-main {
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: var(--radius-sm);
            padding: 12px 28px;
            font-weight: 600;
            font-size: 16px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: all var(--transition);
        }

        .btn-main:hover {
            background: var(--primary-deep);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(29, 78, 120, 0.18);
        }

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

        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 1.5px solid var(--primary);
            border-radius: var(--radius-sm);
            padding: 12px 28px;
            font-weight: 600;
            font-size: 16px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: all var(--transition);
        }

        .btn-outline:hover {
            background: rgba(45, 106, 158, 0.08);
            color: var(--primary-deep);
            transform: translateY(0);
        }

        .btn-outline:active {
            background: rgba(45, 106, 158, 0.2);
        }

        .btn-lg {
            padding: 14px 36px;
            font-size: 17px;
        }

        /* 响应式 */
        @media (max-width: 1199.98px) {
            .container-custom {
                padding: 0 32px;
            }
        }

        @media (max-width: 991.98px) {
            .sidebar-nav {
                display: none;
            }

            .main-content {
                margin-left: 0;
            }

            .navbar-mobile {
                display: flex;
            }

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

            .catHero-stats {
                flex-wrap: wrap;
                gap: 20px;
            }

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

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

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

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

        @media (max-width: 767.98px) {
            .container-custom {
                padding: 0 20px;
            }

            .catHero {
                padding: 48px 0 40px;
            }

            .catHero h1 {
                font-size: 28px;
            }

            .catHero p {
                font-size: 15px;
            }

            .catHero-stats .num {
                font-size: 28px;
            }

            .float-card {
                display: none;
            }

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

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

            .section-title {
                font-size: 22px;
            }

            .btn-main,
            .btn-outline {
                width: 100%;
                justify-content: center;
                margin-bottom: 10px;
            }

            .case-card img {
                height: 160px;
            }

            .cta-box {
                padding: 32px 24px;
            }

            .accordion-header-custom {
                font-size: 15px;
                padding: 14px 16px;
            }

            .accordion-content-custom {
                padding: 0 16px 16px;
            }

            .content-list-header {
                flex-direction: column;
                align-items: flex-start;
            }

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

        @media (max-width: 575.98px) {
            .navbar-mobile {
                padding: 0 16px;
            }

            .navbar-mobile .navbar-brand {
                font-size: 18px;
            }

            .sidebar-contact {
                display: none;
            }

            .nav-desktop .nav-d-item {
                font-size: 14px;
                padding: 10px 16px;
            }

            .catHero-stats {
                gap: 16px;
            }

            .catHero-stats .item {
                flex: 1;
                text-align: center;
            }

            .features-list {
                grid-template-columns: 1fr;
            }
        }

/* roulang page: category2 */
:root{
  --primary:#2D6A9E;
  --primary-light:#EAF1F8;
  --primary-dark:#1E4F78;
  --primary-active:#163D61;
  --accent:#E8663A;
  --success:#3A8A6E;
  --bg-main:#FFFFFF;
  --bg-alt:#F7FAFC;
  --bg-footer:#F2F5F9;
  --text-head:#1F2A37;
  --text-body:#4B5563;
  --text-muted:#7A8699;
  --text-weak:#9AA6B8;
  --border:#E4E9F0;
  --radius:12px;
  --radius-lg:14px;
  --shadow:0 4px 20px rgba(45,106,158,.06);
  --shadow-hover:0 10px 30px rgba(45,106,158,.10);
  --transition:.25s ease;
  --sidebar-w:280px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  background:var(--bg-main);
  color:var(--text-body);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--primary);text-decoration:none;transition:color var(--transition)}
a:hover{color:var(--primary-dark)}
a:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
img{max-width:100%;height:auto;display:block}
.container-custom{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
@media(min-width:1200px){
  .container-custom{max-width:1200px}
}

/* ===== 左侧导航 ===== */
.sidebar{
  position:fixed;
  left:0;top:0;bottom:0;
  width:var(--sidebar-w);
  background:#fff;
  border-right:1px solid transparent;
  box-shadow:0 0 20px rgba(0,0,0,.03);
  z-index:1040;
  display:flex;
  flex-direction:column;
  padding:0 16px;
}
.sidebar-brand{
  display:flex;
  align-items:center;
  gap:12px;
  height:72px;
  padding:0 8px;
  border-bottom:1px solid var(--border);
  margin-bottom:20px;
  flex-shrink:0;
}
.sidebar-brand .brand-icon-box{
  width:36px;height:36px;
  border-radius:8px;
  background:var(--primary);
  color:#fff;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:17px;
  font-weight:700;
  letter-spacing:1px;
}
.sidebar-brand .brand-text{
  font-size:20px;
  font-weight:700;
  color:var(--text-head);
  letter-spacing:.5px;
}
.sidebar-nav{
  flex:1;
  display:flex;
  flex-direction:column;
  gap:4px;
}
.sidebar-link{
  display:flex;
  align-items:center;
  gap:12px;
  padding:12px 16px;
  border-radius:8px;
  color:var(--text-body);
  font-weight:500;
  font-size:15px;
  transition:background var(--transition),color var(--transition);
  position:relative;
}
.sidebar-link i{
  width:20px;
  text-align:center;
  color:var(--text-weak);
  transition:color var(--transition);
}
.sidebar-link:hover{
  background:var(--primary-light);
  color:var(--primary);
}
.sidebar-link:hover i{color:var(--primary)}
.sidebar-link.active{
  background:var(--primary-light);
  color:var(--primary);
  font-weight:600;
}
.sidebar-link.active::before{
  content:'';
  position:absolute;
  left:0;top:50%;
  transform:translateY(-50%);
  width:3px;height:20px;
  border-radius:0 4px 4px 0;
  background:var(--primary);
}
.sidebar-link.active i{color:var(--primary)}
.sidebar-foot{
  flex-shrink:0;
  padding:16px 8px 20px;
  border-top:1px solid var(--border);
  font-size:13px;
  color:var(--text-muted);
  line-height:1.8;
}
.sidebar-foot .foot-contact{
  display:flex;
  align-items:center;
  gap:6px;
  margin-bottom:4px;
}
.sidebar-foot .foot-contact i{
  width:16px;
  font-size:13px;
  color:var(--text-weak);
}

/* ===== 移动端导航 ===== */
.navbar-mobile{
  display:none;
  background:#fff;
  box-shadow:0 2px 8px rgba(0,0,0,.05);
  min-height:64px;
  padding:0 16px;
  border:none;
  z-index:1030;
}
.navbar-mobile .navbar-brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:20px;
  font-weight:700;
  color:var(--text-head);
}
.navbar-mobile .navbar-brand i{
  color:var(--primary);
  font-size:22px;
}
.custom-toggler{
  display:flex;
  flex-direction:column;
  gap:5px;
  width:26px;
  padding:5px 0;
  background:transparent;
  border:none;
}
.custom-toggler span{
  display:block;
  width:100%;
  height:2px;
  border-radius:2px;
  background:var(--text-head);
  transition:all .3s ease;
}
.navbar-mobile .navbar-nav{
  padding:10px 0;
}
.navbar-mobile .nav-link{
  display:flex;
  align-items:center;
  gap:10px;
  padding:12px 16px;
  font-weight:500;
  color:var(--text-body);
  border-bottom:1px solid var(--border);
  border-radius:0;
}
.navbar-mobile .nav-link i{
  width:20px;
  text-align:center;
  color:var(--text-weak);
}
.navbar-mobile .nav-link.active{
  color:var(--primary);
  font-weight:600;
  background:var(--primary-light);
}
.navbar-mobile .nav-link.active i{color:var(--primary)}

/* ===== 主内容区 ===== */
.site-main{
  margin-left:var(--sidebar-w);
  min-height:100vh;
  display:flex;
  flex-direction:column;
}

/* ===== 通用区块 ===== */
.section-block{
  padding:72px 0;
}
.section-label{
  display:inline-block;
  font-size:12px;
  font-weight:600;
  letter-spacing:2px;
  text-transform:uppercase;
  color:var(--primary);
  margin-bottom:10px;
}
.section-title{
  font-size:clamp(22px,2.5vw,30px);
  font-weight:700;
  color:var(--text-head);
  margin-bottom:16px;
  line-height:1.3;
}
.section-desc{
  font-size:16px;
  color:var(--text-body);
  max-width:640px;
  line-height:1.7;
}

/* ===== Hero ===== */
.hero-section{
  position:relative;
  background:linear-gradient(135deg,rgba(45,106,158,.07),rgba(45,106,158,.02)),url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  padding:96px 0 88px;
  overflow:hidden;
}
.hero-section::before{
  content:'';
  position:absolute;
  width:240px;height:240px;
  border-radius:50%;
  background:var(--accent);
  opacity:.07;
  top:-60px;right:70px;
}
.hero-section .container-custom{
  position:relative;
  z-index:2;
}
.hero-badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:var(--primary-light);
  color:var(--primary);
  font-size:13px;
  font-weight:600;
  padding:6px 14px;
  border-radius:30px;
  margin-bottom:20px;
}
.hero-title{
  font-size:clamp(30px,4vw,46px);
  font-weight:800;
  color:var(--text-head);
  line-height:1.25;
  margin-bottom:18px;
  max-width:640px;
}
.hero-title .highlight{
  color:var(--primary);
  position:relative;
}
.hero-sub{
  font-size:17px;
  color:var(--text-body);
  line-height:1.75;
  max-width:520px;
  margin-bottom:30px;
}
.hero-actions{
  display:flex;
  gap:14px;
  align-items:flex-start;
  flex-wrap:wrap;
}
.btn-brand{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:var(--primary);
  color:#fff;
  font-weight:600;
  font-size:15px;
  padding:11px 26px;
  border-radius:8px;
  border:none;
  cursor:pointer;
  transition:background var(--transition),box-shadow var(--transition),transform var(--transition);
}
.btn-brand:hover{
  background:var(--primary-dark);
  color:#fff;
  box-shadow:0 6px 16px rgba(29,78,120,.18);
  transform:translateY(-2px);
}
.btn-brand:active{
  background:var(--primary-active);
  transform:translateY(0);
}
.btn-outline-brand{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:transparent;
  color:var(--primary);
  font-weight:600;
  font-size:15px;
  padding:10px 24px;
  border-radius:8px;
  border:1.5px solid var(--primary);
  cursor:pointer;
  transition:background var(--transition),color var(--transition);
}
.btn-outline-brand:hover{
  background:rgba(45,106,158,.10);
  color:var(--primary-dark);
}
.btn-outline-brand:active{
  background:rgba(45,106,158,.20);
  color:var(--primary-active);
}
.hero-note{
  margin-top:16px;
  font-size:13px;
  color:var(--text-weak);
}
.hero-note strong{
  color:var(--accent);
  font-weight:700;
}

/* ===== 数据条 ===== */
.stats-bar{
  background:var(--bg-main);
  border-bottom:1px solid var(--border);
  padding:36px 0;
}
.stats-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
}
.stats-item{
  text-align:center;
  padding:12px 8px;
}
.stats-num{
  font-size:clamp(32px,3vw,44px);
  font-weight:700;
  color:var(--success);
  line-height:1.2;
}
.stats-label{
  font-size:14px;
  color:var(--text-muted);
  margin-top:6px;
}

/* ===== 核心能力 ===== */
.capability-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:24px;
}
.capability-card{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:30px 26px;
  box-shadow:var(--shadow);
  transition:box-shadow var(--transition),transform var(--transition);
}
.capability-card:hover{
  box-shadow:var(--shadow-hover);
  transform:translateY(-3px);
}
.cap-icon{
  width:52px;height:52px;
  border-radius:12px;
  background:var(--primary-light);
  color:var(--primary);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:22px;
  margin-bottom:18px;
}
.cap-card-title{
  font-size:18px;
  font-weight:600;
  color:var(--text-head);
  margin-bottom:8px;
}
.cap-card-text{
  font-size:14px;
  color:var(--text-body);
  line-height:1.7;
  margin-bottom:0;
}

/* ===== 内容矩阵 ===== */
.matrix-wrap{
  display:grid;
  grid-template-columns:2fr 1fr;
  gap:24px;
}
.matrix-card-large{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  overflow:hidden;
  box-shadow:var(--shadow);
  display:flex;
  flex-direction:column;
  transition:box-shadow var(--transition),transform var(--transition);
}
.matrix-card-large:hover{
  box-shadow:var(--shadow-hover);
  transform:translateY(-3px);
}
.matrix-card-large .matrix-img{
  height:220px;
  background:url('/assets/images/coverpic/cover-3.webp') center/cover no-repeat;
}
.matrix-card-body{
  padding:26px;
  flex:1;
}
.matrix-card-body h3{
  font-size:20px;
  font-weight:600;
  color:var(--text-head);
  margin-bottom:10px;
}
.matrix-card-body p{
  font-size:15px;
  color:var(--text-body);
  line-height:1.7;
  margin-bottom:0;
}
.matrix-card-small-list{
  display:flex;
  flex-direction:column;
  gap:24px;
}
.matrix-card-small{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:var(--shadow);
  flex:1;
  display:flex;
  transition:box-shadow var(--transition),transform var(--transition);
}
.matrix-card-small:hover{
  box-shadow:var(--shadow-hover);
  transform:translateY(-3px);
}
.matrix-card-small .matrix-thumb{
  width:110px;
  flex-shrink:0;
  background-position:center;
  background-size:cover;
}
.matrix-card-small .matrix-info{
  padding:18px 16px;
  flex:1;
}
.matrix-card-small h4{
  font-size:16px;
  font-weight:600;
  color:var(--text-head);
  margin-bottom:6px;
}
.matrix-card-small p{
  font-size:13px;
  color:var(--text-muted);
  line-height:1.6;
  margin-bottom:0;
}
.cap-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--primary);
  margin-top:12px;
  transition:color var(--transition);
}
.cap-link i{
  font-size:12px;
  transition:transform .25s ease;
}
.cap-link:hover{
  color:var(--primary-dark);
}
.cap-link:hover i{
  transform:translateX(4px);
}

/* ===== 流程 ===== */
.process-section{
  background:var(--bg-alt);
}
.process-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
}
.process-step{
  position:relative;
  padding:26px 20px;
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  transition:box-shadow var(--transition),transform var(--transition);
}
.process-step:hover{
  box-shadow:var(--shadow-hover);
  transform:translateY(-3px);
}
.process-num{
  font-size:30px;
  font-weight:700;
  color:var(--primary-light);
  margin-bottom:12px;
  line-height:1;
}
.process-title{
  font-size:16px;
  font-weight:600;
  color:var(--text-head);
  margin-bottom:6px;
}
.process-text{
  font-size:13px;
  color:var(--text-muted);
  line-height:1.6;
  margin-bottom:0;
}

/* ===== 适用场景 ===== */
.scene-wrap{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:48px;
  align-items:center;
}
.scene-list{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:20px;
  margin-top:24px;
}
.scene-item{
  background:var(--bg-alt);
  border-radius:var(--radius);
  padding:20px;
  border-left:3px solid var(--primary);
}
.scene-item i{
  color:var(--primary);
  font-size:20px;
  margin-bottom:10px;
}
.scene-item h4{
  font-size:15px;
  font-weight:600;
  color:var(--text-head);
  margin-bottom:6px;
}
.scene-item p{
  font-size:13px;
  color:var(--text-muted);
  line-height:1.6;
  margin-bottom:0;
}
.scene-image-wrap{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  box-shadow:var(--shadow-hover);
}
.scene-image-wrap img{
  width:100%;
  height:360px;
  object-fit:cover;
  border-radius:var(--radius-lg);
}

/* ===== FAQ ===== */
.faq-section{
  background:var(--bg-footer);
}
.faq-list{
  max-width:860px;
  margin:0 auto;
}
.accordion-item{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius)!important;
  margin-bottom:14px;
  overflow:hidden;
  box-shadow:var(--shadow);
}
.accordion-item .accordion-button{
  font-size:16px;
  font-weight:600;
  color:var(--text-head);
  padding:20px 24px;
  background:#fff;
  border:none;
  box-shadow:none;
  transition:background var(--transition);
}
.accordion-item .accordion-button:not(.collapsed){
  background:var(--primary-light);
  color:var(--primary);
  box-shadow:none;
}
.accordion-item .accordion-button::after{
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%232D6A9E' viewBox='0 0 16 16'%3E%3Cpath fill-rule='evenodd' d='M8 2a.75.75 0 0 1 .75.75v4.5h4.5a.75.75 0 0 1 0 1.5h-4.5v4.5a.75.75 0 0 1-1.5 0v-4.5H2.75a.75.75 0 0 1 0-1.5h4.5v-4.5A.75.75 0 0 1 8 2Z'/%3E%3C/svg%3E");
  background-size:16px;
  transition:transform .3s ease;
}
.accordion-item .accordion-button:not(.collapsed)::after{
  transform:rotate(45deg);
}
.accordion-item .accordion-body{
  padding:8px 24px 22px;
  font-size:15px;
  color:var(--text-body);
  line-height:1.8;
  border-top:1px solid var(--border);
}

/* ===== CTA ===== */
.cta-section{
  padding:80px 0;
  background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%);
  position:relative;
  overflow:hidden;
}
.cta-section::before{
  content:'';
  position:absolute;
  width:300px;height:300px;
  border-radius:50%;
  background:rgba(255,255,255,.04);
  top:-100px;right:-80px;
}
.cta-inner{
  text-align:center;
  color:#fff;
  position:relative;
  z-index:2;
}
.cta-title{
  font-size:clamp(26px,3vw,36px);
  font-weight:700;
  margin-bottom:12px;
}
.cta-text{
  font-size:16px;
  opacity:.88;
  max-width:520px;
  margin:0 auto 28px;
}
.btn-white{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:#fff;
  color:var(--primary);
  font-weight:600;
  font-size:15px;
  padding:12px 30px;
  border-radius:8px;
  border:none;
  cursor:pointer;
  transition:background var(--transition),box-shadow var(--transition),transform var(--transition);
}
.btn-white:hover{
  background:var(--primary-light);
  color:var(--primary-dark);
  box-shadow:0 8px 24px rgba(255,255,255,.18);
  transform:translateY(-2px);
}

/* ===== 页脚 ===== */
.footer{
  background:var(--bg-footer);
  border-top:1px solid var(--border);
  padding:52px 0 0;
  margin-top:auto;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.2fr .8fr 1fr;
  gap:40px;
  padding-bottom:32px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:12px;
}
.footer-brand .brand-icon-box{
  width:32px;height:32px;
  border-radius:8px;
  background:var(--primary);
  color:#fff;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:15px;
  font-weight:700;
}
.footer-brand .brand-text{
  font-size:18px;
  font-weight:700;
  color:var(--text-head);
}
.footer-desc{
  font-size:14px;
  color:var(--text-muted);
  line-height:1.7;
  margin-bottom:12px;
  max-width:320px;
}
.footer-title{
  font-size:15px;
  font-weight:600;
  color:var(--text-head);
  margin-bottom:14px;
}
.footer-links{
  list-style:none;
  padding:0;
  margin:0;
}
.footer-links li{
  margin-bottom:10px;
}
.footer-links a{
  color:var(--text-body);
  font-size:14px;
  transition:color var(--transition);
}
.footer-links a:hover{
  color:var(--primary);
}
.footer-contact{
  list-style:none;
  padding:0;
  margin:0;
}
.footer-contact li{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:14px;
  color:var(--text-body);
  margin-bottom:10px;
}
.footer-contact li i{
  width:18px;
  color:var(--primary);
  font-size:14px;
}
.footer-bottom{
  border-top:1px solid var(--border);
  padding:18px 0;
  display:flex;
  justify-content:space-between;
  align-items:center;
  font-size:13px;
  color:var(--text-weak);
  flex-wrap:wrap;
  gap:8px;
}

/* ===== 响应式 ===== */
@media(max-width:1199.98px){
  .container-custom{
    max-width:100%;
    padding-left:20px;
    padding-right:20px;
  }
}
@media(max-width:991.98px){
  .sidebar{display:none}
  .site-main{margin-left:0}
  .navbar-mobile{display:block}
  .hero-section{padding:72px 0 64px}
  .section-block{padding:56px 0}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .capability-grid{grid-template-columns:1fr}
  .matrix-wrap{grid-template-columns:1fr}
  .matrix-card-small .matrix-thumb{width:100px}
  .process-grid{grid-template-columns:repeat(2,1fr)}
  .scene-wrap{grid-template-columns:1fr;gap:32px}
  .scene-image-wrap img{height:300px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media(max-width:575.98px){
  .hero-section{padding:56px 0 48px}
  .hero-title{font-size:28px}
  .hero-sub{font-size:15px}
  .hero-actions .btn-brand,.hero-actions .btn-outline-brand{width:100%;justify-content:center}
  .stats-grid{grid-template-columns:1fr 1fr;gap:16px}
  .process-grid{grid-template-columns:1fr}
  .scene-list{grid-template-columns:1fr}
  .matrix-card-small{flex-direction:column}
  .matrix-card-small .matrix-thumb{width:100%;height:140px}
  .section-block{padding:44px 0}
  .cta-section{padding:56px 0}
}