/* roulang page: index */
:root {
            --primary: #2E6BE6;
            --primary-dark: #1D4FAF;
            --primary-light: #F0F5FC;
            --accent: #0FA3A3;
            --accent-light: #E5F5F5;
            --accent-text: #0A8B8B;
            --warning: #F5A623;
            --bg: #F4F8FC;
            --card-bg: #FFFFFF;
            --dark: #142C4C;
            --text: #3D526E;
            --text-light: #7C8CA3;
            --border: #E2EAF3;
            --radius-lg: 16px;
            --radius-sm: 12px;
            --radius-xs: 8px;
            --shadow-sm: 0 4px 14px rgba(20, 44, 76, 0.06);
            --shadow-lg: 0 12px 28px rgba(20, 44, 76, 0.10);
            --shadow-btn: 0 6px 16px rgba(46, 107, 230, 0.18);
            --shadow-btn-hover: 0 8px 22px rgba(46, 107, 230, 0.30);
            --font: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", system-ui, sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font);
            font-size: 15px;
            line-height: 1.75;
            color: var(--text);
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: var(--primary-dark);
        }
        .container {
            max-width: 1200px;
            padding-left: 16px;
            padding-right: 16px;
        }
        .section {
            padding: 84px 0;
        }
        .section-head {
            text-align: center;
            margin-bottom: 36px;
        }
        .section-head h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--dark);
            line-height: 1.35;
            margin-bottom: 8px;
        }
        .section-head p {
            color: var(--text-light);
            font-size: 15px;
            max-width: 560px;
            margin: 0 auto;
        }

        /* ===== 按钮 ===== */
        .btn {
            border-radius: var(--radius-xs);
            font-size: 15px;
            font-weight: 600;
            padding: 10px 22px;
            border: 1px solid transparent;
            transition: all 0.25s ease;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: var(--shadow-btn);
        }
        .btn-primary:hover,
        .btn-primary:focus {
            background: var(--primary-dark);
            box-shadow: var(--shadow-btn-hover);
            color: #fff;
        }
        .btn-outline-primary {
            background: #fff;
            border-color: var(--primary);
            color: var(--primary);
        }
        .btn-outline-primary:hover,
        .btn-outline-primary:focus {
            background: var(--primary-light);
            border-color: var(--primary);
            color: var(--primary-dark);
        }
        .btn-lg {
            padding: 12px 30px;
            font-size: 16px;
        }
        .btn-sm {
            padding: 7px 16px;
            font-size: 13px;
        }
        .btn:focus-visible {
            outline: 3px solid rgba(46, 107, 230, 0.35);
            outline-offset: 2px;
        }

        /* ===== 导航 ===== */
        .brand-bar {
            background: #fff;
            height: auto;
            border-bottom: 1px solid var(--border);
        }
        .brand-bar-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 0;
            min-height: 64px;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
        }
        .brand-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .brand-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--dark);
            line-height: 1.2;
            white-space: nowrap;
        }
        .brand-text .brand-highlight {
            color: var(--primary);
        }
        .brand-actions {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .brand-actions .btn-link {
            color: var(--text);
            font-weight: 500;
            text-decoration: none;
            padding: 6px 12px;
        }
        .brand-actions .btn-link:hover {
            color: var(--primary);
        }

        .channel-bar {
            background: #EAF2FA;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .channel-scroll {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 8px 0;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
            white-space: nowrap;
        }
        .channel-scroll::-webkit-scrollbar {
            display: none;
        }
        .channel-item {
            display: inline-flex;
            align-items: center;
            padding: 6px 18px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text);
            background: transparent;
            border: 1px solid transparent;
            text-decoration: none;
            transition: all 0.2s ease;
            flex-shrink: 0;
        }
        .channel-item:hover {
            background: rgba(46, 107, 230, 0.08);
            color: var(--primary);
            text-decoration: none;
        }
        .channel-item.active {
            background: #fff;
            color: var(--primary);
            font-weight: 600;
            box-shadow: 0 2px 8px rgba(20, 44, 76, 0.08);
            border-color: rgba(46, 107, 230, 0.1);
        }

        /* ===== Hero ===== */
        .hero {
            background: linear-gradient(180deg, #E3EFFA 0%, #F4F8FC 100%);
            position: relative;
            padding: 84px 0;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('/assets/images/backpic/back-1.png') no-repeat center center / cover;
            opacity: 0.12;
            pointer-events: none;
        }
        .hero .container {
            position: relative;
            z-index: 1;
        }
        .hero h1 {
            font-size: 38px;
            font-weight: 700;
            color: var(--dark);
            line-height: 1.35;
            margin-bottom: 18px;
            letter-spacing: 0.5px;
        }
        .hero-sub {
            font-size: 16px;
            color: var(--text);
            line-height: 1.75;
            margin-bottom: 28px;
            max-width: 500px;
        }
        .hero-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .hero-panel {
            background: rgba(255, 255, 255, 0.92);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            padding: 28px;
            border: 1px solid rgba(226, 234, 243, 0.7);
            backdrop-filter: blur(4px);
        }
        .metric-card {
            text-align: center;
            padding: 20px 16px;
            border-radius: var(--radius-sm);
            background: #F8FAFD;
            border: 1px solid var(--border);
            transition: all 0.2s ease;
        }
        .metric-card:hover {
            background: var(--primary-light);
            border-color: rgba(46, 107, 230, 0.2);
        }
        .metric-num {
            font-size: 32px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
        }
        .metric-label {
            font-size: 13px;
            color: var(--text-light);
            margin-top: 4px;
        }
        .metric-trend {
            font-size: 12px;
            color: var(--accent-text);
            margin-top: 6px;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .metric-trend.down {
            color: var(--text-light);
        }
        .hero-panel-footer {
            border-top: 1px solid var(--border);
            margin-top: 20px;
            padding-top: 16px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            color: var(--text-light);
        }
        .hero-panel-footer a {
            color: var(--primary);
            font-weight: 500;
        }

        /* ===== 服务矩阵 ===== */
        .service-section {
            background: var(--bg);
        }
        .card-wide,
        .card-tall,
        .service-card,
        .news-card,
        .news-row-card {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .card-wide:hover,
        .card-tall:hover,
        .service-card:hover,
        .news-card:hover,
        .news-row-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .card-wide {
            display: flex;
            flex-direction: column;
            height: 100%;
            overflow: hidden;
        }
        .card-wide-img {
            height: 180px;
            overflow: hidden;
        }
        .card-wide-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .card-wide-body {
            padding: 28px;
            flex: 1;
        }
        .badge-accent {
            display: inline-flex;
            align-items: center;
            padding: 4px 14px;
            border-radius: 999px;
            background: var(--accent-light);
            color: var(--accent-text);
            font-size: 12px;
            font-weight: 600;
            margin-bottom: 12px;
        }
        .card-wide-body h3 {
            font-size: 24px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 12px;
        }
        .card-wide-body p {
            color: var(--text);
            font-size: 14px;
            margin-bottom: 18px;
            line-height: 1.75;
        }
        .card-wide-body ul {
            list-style: none;
            padding: 0;
            margin: 0 0 22px 0;
        }
        .card-wide-body ul li {
            padding: 6px 0;
            font-size: 14px;
            color: var(--text);
            position: relative;
            padding-left: 24px;
        }
        .card-wide-body ul li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--accent);
            font-weight: 700;
        }
        .card-tall {
            height: 100%;
            overflow: hidden;
            display: flex;
            flex-direction: column;
        }
        .card-tall img {
            width: 100%;
            height: 140px;
            object-fit: cover;
        }
        .card-tall-body {
            padding: 24px;
            flex: 1;
        }
        .card-tall-body h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 12px;
        }
        .card-tall-body ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .card-tall-body ul li {
            padding: 6px 0;
            font-size: 14px;
            color: var(--text);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .card-tall-body ul li i {
            color: var(--accent);
            font-size: 13px;
        }
        .service-card {
            padding: 28px 24px;
            height: 100%;
        }
        .service-icon {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 18px;
        }
        .service-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 10px;
        }
        .service-card p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.75;
            margin-bottom: 16px;
        }
        .ghost-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: gap 0.2s ease;
        }
        .ghost-link:hover {
            gap: 8px;
            color: var(--primary-dark);
        }

        /* ===== 结果对比 ===== */
        .compare-section {
            background: #fff;
        }
        .compare-panel {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
        }
        .compare-table {
            width: 100%;
            border-collapse: separate;
            border-spacing: 0;
        }
        .compare-table th {
            padding: 16px 20px;
            font-size: 16px;
            font-weight: 700;
            color: var(--dark);
            background: #F8FAFD;
            border-bottom: 2px solid var(--border);
            text-align: left;
        }
        .compare-table th.recommend-col {
            background: var(--accent-light);
            color: var(--accent-text);
            border-left: 1px solid var(--border);
        }
        .compare-table th .badge-rec {
            display: inline-block;
            background: var(--accent);
            color: #fff;
            font-size: 11px;
            font-weight: 600;
            border-radius: 999px;
            padding: 2px 10px;
            margin-left: 6px;
        }
        .compare-table td {
            padding: 16px 20px;
            border-bottom: 1px solid var(--border);
            font-size: 14px;
            line-height: 1.7;
            vertical-align: middle;
        }
        .compare-table td:first-child {
            color: var(--text-light);
        }
        .compare-table td.recommend-col {
            border-left: 1px solid var(--border);
            background: #F7FAFD;
            color: var(--dark);
            font-weight: 500;
            border-left: 3px solid var(--accent);
        }
        .compare-table tr:last-child td {
            border-bottom: none;
        }
        .compare-table tr:hover td {
            background: #F7FAFD;
        }
        .compare-table tr:hover td.recommend-col {
            background: #F0FAFA;
        }
        .compare-note {
            margin-top: 16px;
            font-size: 13px;
            color: var(--text-light);
            text-align: right;
        }

        /* ===== 最新信息 ===== */
        .news-section {
            background: var(--bg);
        }
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .news-card {
            overflow: hidden;
        }
        .news-card-inner {
            display: flex;
            gap: 20px;
            padding: 20px;
            text-decoration: none;
            color: inherit;
        }
        .news-card-img {
            width: 160px;
            height: 100px;
            border-radius: 8px;
            object-fit: cover;
            flex-shrink: 0;
        }
        .news-card-body {
            flex: 1;
            min-width: 0;
        }
        .news-card-body .badge {
            font-size: 12px;
            font-weight: 600;
            background: var(--accent-light);
            color: var(--accent-text);
            border-radius: 999px;
            padding: 3px 12px;
            margin-bottom: 8px;
            display: inline-block;
        }
        .news-card-body h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--dark);
            line-height: 1.4;
            margin-bottom: 6px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card-body p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 8px;
        }
        .news-meta {
            display: flex;
            gap: 12px;
            font-size: 12px;
            color: var(--text-light);
            align-items: center;
        }
        .news-row-card {
            padding: 20px;
        }
        .news-row-link {
            display: flex;
            align-items: center;
            gap: 20px;
            text-decoration: none;
            color: inherit;
        }
        .news-row-info {
            flex: 1;
            min-width: 0;
        }
        .news-row-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--dark);
            line-height: 1.5;
            margin-bottom: 4px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .news-row-summary {
            font-size: 13px;
            color: var(--text-light);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            margin-bottom: 6px;
        }
        .news-row-arrow {
            font-size: 20px;
            color: var(--border);
            transition: transform 0.2s ease, color 0.2s ease;
            flex-shrink: 0;
        }
        .news-row-link:hover .news-row-arrow {
            color: var(--primary);
            transform: translateX(4px);
        }
        .empty-state {
            text-align: center;
            padding: 60px 20px;
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px dashed var(--border);
        }
        .empty-state i {
            font-size: 40px;
            color: var(--border);
            margin-bottom: 12px;
        }
        .empty-state p {
            color: var(--text-light);
            font-size: 15px;
        }
        .sidebar-card {
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 24px;
        }
        .sidebar-card h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 16px;
        }
        .category-list {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .category-list a {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: 999px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 14px;
            font-weight: 500;
            transition: all 0.2s ease;
        }
        .category-list a:hover {
            background: var(--primary);
            color: #fff;
            text-decoration: none;
        }

        /* ===== 统计条 ===== */
        .stats-bar {
            background: var(--dark);
            padding: 50px 0;
            color: #fff;
        }
        .stats-bar .stat-item {
            text-align: center;
            padding: 10px 0;
        }
        .stats-bar .stat-num {
            font-size: 36px;
            font-weight: 700;
            color: #fff;
            line-height: 1.2;
        }
        .stats-bar .stat-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 6px;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: #fff;
        }
        .accordion-item {
            border: 1px solid var(--border) !important;
            border-radius: var(--radius-sm) !important;
            margin-bottom: 12px !important;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }
        .accordion-button {
            padding: 16px 20px;
            font-size: 15px;
            font-weight: 600;
            color: var(--dark);
            background: #fff;
            border: none;
        }
        .accordion-button:not(.collapsed) {
            color: var(--primary);
            background: var(--primary-light);
            box-shadow: none;
        }
        .accordion-button:focus {
            box-shadow: none;
            border-color: transparent;
        }
        .accordion-button::after {
            width: 24px;
            height: 24px;
            background-size: 12px;
            border-radius: 50%;
            background-color: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .accordion-body {
            padding: 0 20px 18px;
            color: var(--text);
            font-size: 14px;
            line-height: 1.8;
        }

        /* ===== 转化表单 ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, #4A85F0 50%, var(--accent) 120%);
            padding: 84px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('/assets/images/backpic/back-2.webp') no-repeat center center / cover;
            opacity: 0.06;
            pointer-events: none;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 40px;
            max-width: 720px;
            margin: 0 auto;
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
        }
        .cta-card h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 8px;
        }
        .cta-card .cta-desc {
            font-size: 14px;
            color: var(--text-light);
            margin-bottom: 24px;
        }
        .cta-trust {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 24px;
        }
        .cta-trust span {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            font-size: 13px;
            color: var(--text);
            background: var(--primary-light);
            border-radius: 999px;
            padding: 4px 14px;
        }
        .cta-trust span i {
            color: var(--accent);
        }
        .form-label {
            font-size: 14px;
            font-weight: 500;
            color: var(--dark);
            margin-bottom: 6px;
        }
        .form-control,
        .form-select {
            height: 44px;
            border: 1px solid #D8E2EE;
            border-radius: var(--radius-xs);
            font-size: 14px;
            color: var(--text);
            padding: 0 16px;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
        }
        .form-control:focus,
        .form-select:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(46, 107, 230, 0.15);
            outline: none;
        }
        .form-control::placeholder {
            color: #AAB8CA;
        }
        .cta-card .btn-submit {
            width: 100%;
            padding: 12px 24px;
            font-size: 16px;
            font-weight: 600;
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: var(--radius-xs);
            box-shadow: var(--shadow-btn);
            transition: all 0.3s ease;
        }
        .cta-card .btn-submit:hover {
            background: var(--primary-dark);
            box-shadow: var(--shadow-btn-hover);
        }
        .cta-note {
            font-size: 12px;
            color: var(--text-light);
            text-align: center;
            margin-top: 12px;
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 56px 0 0;
        }
        .footer h5 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 18px;
        }
        .footer .footer-brand {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .footer .footer-desc {
            font-size: 13px;
            line-height: 1.8;
            max-width: 280px;
        }
        .footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer ul li {
            margin-bottom: 8px;
        }
        .footer ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            transition: color 0.2s ease;
        }
        .footer ul li a:hover {
            color: #fff;
            text-decoration: none;
        }
        .footer .footer-contact li {
            font-size: 14px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer .footer-contact li i {
            color: var(--accent);
            width: 16px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 20px 0;
            margin-top: 40px;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 991.98px) {
            .section {
                padding: 64px 0;
            }
            .hero {
                padding: 60px 0;
            }
            .hero h1 {
                font-size: 32px;
            }
            .hero-panel {
                margin-top: 30px;
            }
            .card-wide-img {
                height: 150px;
            }
            .brand-text {
                font-size: 18px;
            }
            .channel-scroll {
                padding: 6px 0;
            }
        }
        @media (max-width: 767.98px) {
            .section {
                padding: 48px 0;
            }
            .hero h1 {
                font-size: 26px;
            }
            .hero-sub {
                font-size: 15px;
            }
            .brand-icon {
                width: 34px;
                height: 34px;
                font-size: 16px;
            }
            .brand-text {
                font-size: 16px;
            }
            .brand-actions .btn-link {
                display: none;
            }
            .metric-num {
                font-size: 26px;
            }
            .card-wide-body {
                padding: 20px;
            }
            .card-tall-body {
                padding: 18px;
            }
            .news-card-inner {
                flex-direction: row;
                gap: 12px;
            }
            .news-card-img {
                width: 90px;
                height: 70px;
            }
            .news-card-body h3 {
                font-size: 15px;
            }
            .news-card-body p {
                font-size: 13px;
            }
            .news-row-title {
                font-size: 14px;
            }
            .stats-bar .stat-num {
                font-size: 28px;
            }
            .cta-card {
                padding: 24px;
            }
            .compare-table th,
            .compare-table td {
                padding: 12px 14px;
                font-size: 13px;
            }
        }
        @media (max-width: 575.98px) {
            .hero-actions .btn {
                width: 100%;
            }
            .hero-panel .row {
                margin: 0 -6px;
            }
            .hero-panel .col-6 {
                padding: 0 6px;
            }
            .brand-text .brand-highlight {
                display: block;
            }
            .news-card-inner {
                flex-direction: column;
            }
            .news-card-img {
                width: 100%;
                height: 120px;
            }
            .footer {
                padding-top: 40px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #2E6BE6;
            --primary-dark: #1D4FAF;
            --secondary: #0FA3A3;
            --accent: #F5A623;
            --bg: #F4F8FC;
            --card-bg: #FFFFFF;
            --dark: #142C4C;
            --text: #3D526E;
            --muted: #7C8CA3;
            --border: #E2EAF3;
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-sm: 0 4px 14px rgba(20, 44, 76, 0.06);
            --shadow-lg: 0 12px 28px rgba(20, 44, 76, 0.10);
            --btn-shadow: 0 6px 16px rgba(46, 107, 230, 0.18);
            --transition: all 0.25s ease;
        }

        * {
            box-sizing: border-box;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", system-ui, sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.75;
            margin: 0;
            padding: 0;
            overflow-x: hidden;
        }

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

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

        img {
            max-width: 100%;
        }

        button:focus,
        input:focus,
        select:focus,
        textarea:focus,
        a:focus {
            outline: 3px solid rgba(46, 107, 230, 0.30);
            outline-offset: 2px;
        }

        .container {
            max-width: 1200px;
        }

        /* ===== Nav ===== */
        .brand-bar {
            background: #fff;
            min-height: 64px;
            border-bottom: 1px solid var(--border);
            display: flex;
            align-items: center;
        }

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

        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
            color: var(--dark);
            font-size: 19px;
            font-weight: 700;
            line-height: 1.2;
        }

        .brand-logo:hover {
            color: var(--dark);
            text-decoration: none;
        }

        .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: var(--primary);
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .brand-text {
            white-space: nowrap;
        }

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

        .brand-actions {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .brand-actions .btn-link {
            color: var(--text);
            font-weight: 500;
            text-decoration: none;
        }

        .brand-actions .btn-link:hover {
            color: var(--primary);
        }

        .channel-bar {
            background: #EAF2FA;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 1020;
        }

        .channel-scroll {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 8px 0;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }

        .channel-scroll::-webkit-scrollbar {
            display: none;
        }

        .channel-item {
            display: inline-flex;
            align-items: center;
            padding: 6px 18px;
            border-radius: 999px;
            background: transparent;
            color: var(--text);
            font-size: 14px;
            font-weight: 500;
            white-space: nowrap;
            text-decoration: none;
            transition: var(--transition);
            border: none;
        }

        .channel-item:hover {
            background: rgba(46, 107, 230, 0.08);
            color: var(--primary);
            text-decoration: none;
        }

        .channel-item.active {
            background: #fff;
            color: var(--primary);
            font-weight: 600;
            box-shadow: 0 2px 8px rgba(20, 44, 76, 0.08);
        }

        @media (max-width: 991.98px) {
            .brand-bar {
                min-height: 56px;
            }
            .brand-text {
                font-size: 16px;
            }
            .brand-actions .btn {
                font-size: 13px;
                padding: 6px 12px;
            }
            .channel-scroll {
                padding: 6px 0;
            }
        }

        /* ===== Button ===== */
        .btn {
            border-radius: var(--radius-sm);
            font-size: 15px;
            padding: 10px 22px;
            font-weight: 500;
            transition: var(--transition);
        }

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

        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            box-shadow: 0 10px 24px rgba(46, 107, 230, 0.30);
            transform: translateY(-2px);
        }

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

        .btn-outline-primary:hover {
            background: #F0F5FC;
            border-color: var(--primary);
            color: var(--primary);
        }

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

        .btn-light:hover {
            background: #F0F5FC;
            border-color: var(--primary);
            color: var(--primary);
        }

        /* ===== Hero ===== */
        .category-hero {
            background: linear-gradient(180deg, #E3EFFA 0%, #F4F8FC 100%);
            padding: 76px 0 64px;
            position: relative;
            overflow: hidden;
        }

        .category-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background-image: url("/assets/images/backpic/back-1.png");
            background-size: cover;
            background-position: center;
            opacity: 0.12;
            pointer-events: none;
        }

        .category-hero-inner {
            position: relative;
            z-index: 1;
        }

        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.8);
            border: 1px solid var(--border);
            border-radius: 999px;
            padding: 6px 16px;
            font-size: 13px;
            color: var(--primary);
            font-weight: 600;
            margin-bottom: 18px;
        }

        .hero-tag img {
            width: 18px;
            height: 18px;
            border-radius: 50%;
            object-fit: cover;
        }

        .category-hero h1 {
            font-size: 38px;
            font-weight: 700;
            color: var(--dark);
            line-height: 1.35;
            margin-bottom: 14px;
        }

        .category-hero p {
            font-size: 16px;
            color: var(--text);
            max-width: 640px;
            margin-bottom: 30px;
        }

        .hero-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .hero-data-panel {
            background: rgba(255, 255, 255, 0.85);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            padding: 28px;
            border: 1px solid rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(6px);
        }

        .data-panel-title {
            font-size: 14px;
            color: var(--muted);
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .data-panel-title i {
            color: var(--secondary);
        }

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

        .data-cell {
            background: #F8FBFE;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 16px;
        }

        .data-cell .number {
            font-size: 26px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.3;
        }

        .data-cell .number.teal {
            color: var(--secondary);
        }

        .data-cell .label {
            font-size: 12px;
            color: var(--muted);
            margin-top: 4px;
        }

        .data-cell .trend {
            font-size: 12px;
            color: var(--secondary);
            margin-top: 2px;
        }

        .data-panel-footer {
            border-top: 1px solid var(--border);
            margin-top: 20px;
            padding-top: 16px;
            font-size: 13px;
            color: var(--muted);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        @media (max-width: 991.98px) {
            .category-hero {
                padding: 48px 0 40px;
            }
            .category-hero h1 {
                font-size: 30px;
            }
            .hero-data-panel {
                margin-top: 32px;
            }
        }

        @media (max-width: 575.98px) {
            .category-hero h1 {
                font-size: 26px;
            }
            .data-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 10px;
            }
            .data-cell .number {
                font-size: 22px;
            }
        }

        /* ===== Section ===== */
        .section {
            padding: 84px 0;
        }

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

        .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--dark);
            line-height: 1.35;
            margin-bottom: 12px;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--muted);
            max-width: 720px;
            margin: 0 auto 36px;
        }

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

        @media (max-width: 767.98px) {
            .section {
                padding: 48px 0;
            }
            .section-title {
                font-size: 24px;
            }
        }

        /* ===== Feature Matrix ===== */
        .feature-matrix {
            background: var(--bg);
        }

        .feature-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: var(--transition);
            height: 100%;
        }

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

        .feature-card-img {
            height: 200px;
            background-size: cover;
            background-position: center;
            position: relative;
        }

        .feature-card-img-lg {
            height: 260px;
        }

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

        .feature-card-body h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--dark);
            margin-bottom: 12px;
        }

        .feature-card-body p {
            font-size: 14px;
            color: var(--text);
            margin-bottom: 16px;
            line-height: 1.8;
        }

        .feature-list {
            list-style: none;
            padding: 0;
            margin: 0 0 18px;
        }

        .feature-list li {
            padding: 6px 0;
            font-size: 14px;
            color: var(--text);
            display: flex;
            align-items: flex-start;
            gap: 8px;
        }

        .feature-list li i {
            color: var(--secondary);
            font-size: 13px;
            margin-top: 5px;
        }

        .feature-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            text-decoration: none;
        }

        .feature-link:hover {
            color: var(--primary-dark);
            text-decoration: underline;
        }

        .feature-link i {
            transition: transform 0.25s ease;
        }

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

        .feature-mini-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

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

        .feature-mini-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: #E5F5F5;
            color: var(--secondary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 16px;
        }

        .feature-mini-card h4 {
            font-size: 18px;
            font-weight: 600;
            color: var(--dark);
            margin-bottom: 8px;
        }

        .feature-mini-card p {
            font-size: 14px;
            color: var(--text);
            line-height: 1.75;
            flex-grow: 1;
        }

        .feature-mini-card .link {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            margin-top: 14px;
            text-decoration: none;
        }

        .feature-mini-card .link:hover {
            text-decoration: underline;
        }

        @media (max-width: 991.98px) {
            .feature-card-img-lg {
                height: 220px;
            }
        }

        @media (max-width: 767.98px) {
            .feature-card-img {
                height: 180px;
            }
        }

        /* ===== Scenario ===== */
        .scenario-section {
            background: #fff;
        }

        .scenario-card {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 28px;
            height: 100%;
            transition: var(--transition);
        }

        .scenario-card:hover {
            background: #fff;
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }

        .scenario-card .icon {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 18px;
        }

        .scenario-card .icon.teal {
            background: var(--secondary);
        }

        .scenario-card .icon.orange {
            background: var(--accent);
        }

        .scenario-card h4 {
            font-size: 18px;
            font-weight: 600;
            color: var(--dark);
            margin-bottom: 10px;
        }

        .scenario-card p {
            font-size: 14px;
            color: var(--text);
            line-height: 1.8;
            margin-bottom: 0;
        }

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

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

        .process-step::after {
            content: "";
            position: absolute;
            top: 32px;
            right: -12px;
            width: 24px;
            height: 2px;
            background: var(--border);
        }

        .process-step:last-child::after {
            display: none;
        }

        .process-number {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 22px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            box-shadow: 0 8px 20px rgba(46, 107, 230, 0.18);
        }

        .process-step:nth-child(2) .process-number {
            background: var(--secondary);
            box-shadow: 0 8px 20px rgba(15, 163, 163, 0.18);
        }

        .process-step:nth-child(3) .process-number {
            background: var(--accent);
            box-shadow: 0 8px 20px rgba(245, 166, 35, 0.18);
        }

        .process-step:nth-child(4) .process-number {
            background: #6C6CE0;
            box-shadow: 0 8px 20px rgba(108, 108, 224, 0.18);
        }

        .process-step h4 {
            font-size: 17px;
            font-weight: 600;
            color: var(--dark);
            margin-bottom: 8px;
        }

        .process-step p {
            font-size: 13px;
            color: var(--muted);
            line-height: 1.7;
            margin-bottom: 0;
        }

        @media (max-width: 767.98px) {
            .process-step {
                margin-bottom: 36px;
            }
            .process-step::after {
                display: none;
            }
        }

        /* ===== Metric ===== */
        .metric-section {
            background: #EAF2FA;
            padding: 84px 0;
        }

        .metric-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 32px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            height: 100%;
            transition: var(--transition);
        }

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

        .metric-card .metric-number {
            font-size: 36px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
        }

        .metric-card .metric-number.teal {
            color: var(--secondary);
        }

        .metric-card .metric-label {
            font-size: 14px;
            color: var(--text);
            margin-top: 8px;
            font-weight: 500;
        }

        .metric-card .metric-desc {
            font-size: 12px;
            color: var(--muted);
            margin-top: 4px;
        }

        @media (max-width: 767.98px) {
            .metric-section {
                padding: 48px 0;
            }
            .metric-card .metric-number {
                font-size: 28px;
            }
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: #fff;
        }

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

        .accordion-button {
            font-size: 16px;
            font-weight: 600;
            color: var(--dark);
            background: #fff;
            padding: 16px 20px;
            border: none;
            box-shadow: none;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .accordion-button:not(.collapsed) {
            color: var(--primary);
            background: #F8FBFE;
            box-shadow: none;
        }

        .accordion-button::after {
            display: none;
        }

        .accordion-button .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: #F0F6FD;
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 600;
            flex-shrink: 0;
            transition: var(--transition);
        }

        .accordion-button:not(.collapsed) .faq-icon {
            background: var(--primary);
            color: #fff;
        }

        .accordion-button .faq-plus {
            margin-left: auto;
            font-size: 14px;
            color: var(--primary);
            transition: var(--transition);
        }

        .accordion-button:not(.collapsed) .faq-plus i {
            transform: rotate(45deg);
        }

        .accordion-body {
            padding: 0 20px 18px;
            font-size: 14px;
            color: var(--text);
            line-height: 1.8;
            background: #fff;
        }

        .accordion-body .inner {
            padding-left: 40px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, #2E6BE6 0%, #4B82EC 50%, #0FA3A3 100%);
            padding: 84px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background-image: url("/assets/images/backpic/back-2.webp");
            background-size: cover;
            background-position: center;
            opacity: 0.06;
            pointer-events: none;
        }

        .cta-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 40px;
            box-shadow: 0 20px 50px rgba(20, 44, 76, 0.14);
            max-width: 720px;
            margin: 0 auto;
            position: relative;
            z-index: 1;
        }

        .cta-card h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 8px;
        }

        .cta-card .lead {
            font-size: 14px;
            color: var(--muted);
            margin-bottom: 24px;
        }

        .form-label {
            font-size: 14px;
            font-weight: 500;
            color: var(--dark);
            margin-bottom: 4px;
        }

        .form-control,
        .form-select {
            border-radius: var(--radius-sm);
            border: 1px solid #D8E2EE;
            padding: 10px 14px;
            font-size: 14px;
            height: auto;
            min-height: 44px;
            transition: var(--transition);
            background: #FDFEFF;
        }

        .form-control:focus,
        .form-select:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(46, 107, 230, 0.15);
        }

        .cta-trust {
            display: flex;
            flex-wrap: wrap;
            gap: 8px 16px;
            margin-bottom: 20px;
        }

        .cta-trust .badge {
            background: #E5F5F5;
            color: var(--secondary);
            border-radius: 999px;
            padding: 5px 14px;
            font-size: 12px;
            font-weight: 500;
        }

        .form-tip {
            font-size: 12px;
            color: var(--muted);
            text-align: center;
            margin-top: 14px;
        }

        .btn-submit {
            width: 100%;
            padding: 12px 24px;
            font-size: 16px;
            font-weight: 600;
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }

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

        @media (max-width: 767.98px) {
            .cta-section {
                padding: 48px 0;
            }
            .cta-card {
                padding: 28px;
            }
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--dark);
            color: #B8C4D6;
            padding: 56px 0 0;
        }

        .footer h5 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 18px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 19px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
        }

        .footer-brand .brand-icon {
            background: var(--primary);
        }

        .footer-desc {
            font-size: 13px;
            line-height: 1.9;
            color: #B8C4D6;
            margin-bottom: 16px;
        }

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

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

        .footer ul a {
            color: #B8C4D6;
            font-size: 14px;
            transition: var(--transition);
            text-decoration: none;
        }

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

        .footer-contact li {
            font-size: 14px;
            display: flex;
            align-items: flex-start;
            gap: 10px;
            margin-bottom: 12px;
            line-height: 1.6;
        }

        .footer-contact i {
            color: var(--secondary);
            margin-top: 4px;
            width: 16px;
            text-align: center;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            margin-top: 40px;
            padding: 20px 0;
            text-align: center;
            font-size: 13px;
            color: #8A9AB2;
        }

        @media (max-width: 767.98px) {
            .footer {
                padding-top: 40px;
            }
            .footer-bottom {
                margin-top: 24px;
            }
        }

/* roulang page: article */
:root {
            --primary: #2E6BE6;
            --primary-dark: #1D4FAF;
            --primary-light: #EAF1FB;
            --secondary: #0FA3A3;
            --secondary-light: #E5F5F5;
            --accent: #F5A623;
            --bg: #F4F8FC;
            --card: #FFFFFF;
            --dark: #142C4C;
            --text: #3D526E;
            --text-muted: #7C8CA3;
            --border: #E2EAF3;
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-sm: 0 4px 14px rgba(20, 44, 76, 0.06);
            --shadow-hover: 0 12px 28px rgba(20, 44, 76, 0.10);
            --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", system-ui, sans-serif;
            background-color: var(--bg);
            color: var(--text);
            font-size: 16px;
            line-height: 1.75;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
        }

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

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

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

        .container {
            max-width: 1200px;
            padding-left: 16px;
            padding-right: 16px;
        }

        .btn {
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 15px;
            padding: 10px 22px;
            transition: var(--transition);
            border: 1px solid transparent;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
        }

        .btn-primary {
            background-color: var(--primary);
            border-color: var(--primary);
            color: #fff;
            box-shadow: 0 6px 16px rgba(46, 107, 230, 0.18);
        }

        .btn-primary:hover,
        .btn-primary:focus {
            background-color: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            box-shadow: 0 8px 24px rgba(46, 107, 230, 0.30);
            transform: translateY(-2px);
        }

        .btn-primary:active {
            background-color: var(--primary-dark);
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(46, 107, 230, 0.25);
        }

        .btn-light {
            background-color: #ffffff;
            border-color: #ffffff;
            color: var(--primary);
            box-shadow: 0 6px 16px rgba(255, 255, 255, 0.15);
        }

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

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

        .btn-outline-primary:hover {
            background-color: var(--primary-light);
            border-color: var(--primary);
            color: var(--primary-dark);
        }

        .btn-link {
            color: var(--text);
            font-weight: 600;
            text-decoration: none;
            padding: 8px 12px;
        }

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

        .btn-lg {
            padding: 14px 32px;
            font-size: 16px;
            border-radius: 10px;
        }

        .btn-sm {
            padding: 7px 16px;
            font-size: 14px;
        }

        /* ===== Header ===== */
        .brand-bar {
            background: #fff;
            border-bottom: 1px solid var(--border);
            height: 64px;
            display: flex;
            align-items: center;
        }

        .brand-bar-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
        }

        .brand-icon {
            width: 36px;
            height: 36px;
            background: var(--primary);
            color: #fff;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
            box-shadow: 0 4px 10px rgba(46, 107, 230, 0.25);
        }

        .brand-text {
            font-size: 18px;
            color: var(--dark);
            font-weight: 600;
            letter-spacing: 0.02em;
        }

        .brand-highlight {
            color: var(--primary);
            font-weight: 700;
        }

        .brand-actions {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .brand-actions .btn-link {
            color: var(--text);
        }

        .brand-actions .btn-link:hover {
            color: var(--primary);
        }

        .channel-bar {
            background: #EAF2FA;
            border-top: 1px solid #DEE8F2;
            border-bottom: 1px solid #DEE8F2;
            position: sticky;
            top: 0;
            z-index: 1020;
            box-shadow: 0 2px 8px rgba(20, 44, 76, 0.04);
        }

        .channel-scroll {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 8px 0;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }

        .channel-scroll::-webkit-scrollbar {
            display: none;
        }

        .channel-item {
            display: inline-flex;
            align-items: center;
            padding: 6px 18px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text);
            background: transparent;
            border: 1px solid transparent;
            white-space: nowrap;
            transition: var(--transition);
            text-decoration: none;
        }

        .channel-item:hover {
            background: rgba(46, 107, 230, 0.12);
            color: var(--primary);
            border-color: rgba(46, 107, 230, 0.2);
        }

        .channel-item.active {
            background: #fff;
            color: var(--primary);
            font-weight: 600;
            border-color: #E2EAF3;
            box-shadow: 0 4px 12px rgba(20, 44, 76, 0.08);
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb-wrap {
            background: #fff;
            border-bottom: 1px solid var(--border);
            padding: 14px 0;
        }

        .breadcrumb-wrap .breadcrumb {
            margin: 0;
            font-size: 13px;
            color: var(--text-muted);
        }

        .breadcrumb-wrap .breadcrumb a {
            color: var(--text-muted);
            text-decoration: none;
            transition: var(--transition);
        }

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

        .breadcrumb-wrap .breadcrumb-item+.breadcrumb-item::before {
            color: #B8C6D8;
            content: "/";
        }

        .breadcrumb-wrap .breadcrumb-item.active {
            color: var(--dark);
            font-weight: 500;
            max-width: 300px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        /* ===== Article Hero ===== */
        .article-hero {
            background: linear-gradient(180deg, #E3EFFA 0%, #F4F8FC 100%);
            padding: 56px 0 0;
            position: relative;
            overflow: hidden;
        }

        .article-hero::before {
            content: "";
            position: absolute;
            top: 0;
            right: 0;
            width: 480px;
            height: 480px;
            background: url('/assets/images/backpic/back-2.webp') no-repeat center/cover;
            opacity: 0.06;
            border-radius: 50%;
            transform: translate(20%, -30%);
            pointer-events: none;
        }

        .article-hero-inner {
            text-align: center;
            max-width: 860px;
            margin: 0 auto;
            position: relative;
            z-index: 1;
        }

        .article-hero h1 {
            font-size: 34px;
            font-weight: 700;
            color: var(--dark);
            line-height: 1.35;
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }

        .article-subhead {
            color: var(--text);
            font-size: 15px;
            line-height: 1.7;
            max-width: 680px;
            margin: 0 auto 20px;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            align-items: center;
            gap: 10px 16px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 36px;
        }

        .article-meta .meta-badge {
            background: var(--secondary-light);
            color: #0A8B8B;
            border-radius: 999px;
            padding: 4px 14px;
            font-weight: 600;
            font-size: 12px;
        }

        .article-meta a {
            color: var(--primary);
            text-decoration: none;
        }

        .article-meta a:hover {
            text-decoration: underline;
        }

        .meta-sep {
            color: #C6D4E2;
        }

        .article-cover-container {
            position: relative;
            z-index: 1;
            max-width: 960px;
            margin: 0 auto;
            padding-bottom: 48px;
        }

        .article-cover-img {
            width: 100%;
            border-radius: var(--radius-lg);
            box-shadow: 0 12px 32px rgba(20, 44, 76, 0.12);
            aspect-ratio: 16 / 8.5;
            object-fit: cover;
            display: block;
            border: 1px solid var(--border);
        }

        /* ===== Article Content ===== */
        .article-content-section {
            padding: 64px 0 48px;
            background: var(--bg);
        }

        .article-body {
            max-width: 800px;
            margin: 0 auto;
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 48px 56px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
        }

        .article-body p {
            margin-bottom: 24px;
            font-size: 16px;
            line-height: 1.8;
            color: var(--text);
        }

        .article-body h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--dark);
            margin: 36px 0 16px;
            line-height: 1.4;
        }

        .article-body h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--dark);
            margin: 32px 0 14px;
            line-height: 1.4;
        }

        .article-body h4 {
            font-size: 18px;
            font-weight: 600;
            color: var(--dark);
            margin: 28px 0 12px;
        }

        .article-body ul,
        .article-body ol {
            margin: 0 0 24px;
            padding-left: 20px;
            line-height: 1.9;
        }

        .article-body li {
            margin-bottom: 8px;
        }

        .article-body blockquote {
            border-left: 4px solid var(--primary);
            background: #F0F6FD;
            border-radius: var(--radius-sm);
            padding: 18px 24px;
            margin: 28px 0;
            color: var(--text);
            font-style: normal;
        }

        .article-body blockquote p {
            margin: 0;
            color: var(--text);
        }

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

        .article-body a {
            color: var(--primary);
            font-weight: 500;
            text-decoration: underline;
            text-decoration-color: rgba(46, 107, 230, 0.3);
            text-underline-offset: 3px;
        }

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

        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            border-radius: var(--radius-sm);
            overflow: hidden;
        }

        .article-body table th {
            background: var(--primary-light);
            color: var(--dark);
            font-weight: 600;
            padding: 12px 16px;
            text-align: left;
            border: 1px solid var(--border);
        }

        .article-body table td {
            padding: 12px 16px;
            border: 1px solid var(--border);
            color: var(--text);
        }

        .article-body table tr:nth-child(even) td {
            background: #F8FAFC;
        }

        .article-not-found {
            text-align: center;
            padding: 64px 24px;
        }

        .article-not-found i {
            font-size: 48px;
            color: var(--text-muted);
            margin-bottom: 16px;
            opacity: 0.5;
        }

        .article-not-found h3 {
            font-size: 22px;
            color: var(--dark);
            margin-bottom: 8px;
        }

        .article-not-found p {
            color: var(--text-muted);
            margin-bottom: 20px;
        }

        /* ===== Author card ===== */
        .article-author-box {
            max-width: 800px;
            margin: 32px auto 0;
            background: #fff;
            border-radius: var(--radius-md);
            padding: 24px;
            display: flex;
            align-items: center;
            gap: 18px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
        }

        .author-avatar {
            width: 56px;
            height: 56px;
            background: var(--primary);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            font-weight: 700;
            flex-shrink: 0;
            box-shadow: 0 4px 12px rgba(46, 107, 230, 0.25);
        }

        .author-details {
            flex: 1;
        }

        .author-details .author-title {
            font-weight: 700;
            color: var(--dark);
            font-size: 16px;
            margin-bottom: 2px;
            display: block;
        }

        .author-details p {
            margin: 0;
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.6;
        }

        /* ===== Tags & share ===== */
        .article-tools {
            max-width: 800px;
            margin: 24px auto 0;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            background: #fff;
            border-radius: var(--radius-md);
            padding: 18px 24px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
        }

        .article-tags {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
        }

        .article-tags .tag-label {
            font-size: 13px;
            color: var(--text-muted);
        }

        .article-tags .tag-link {
            background: var(--secondary-light);
            color: #0A8B8B;
            border-radius: 999px;
            padding: 4px 14px;
            font-size: 12px;
            font-weight: 500;
            text-decoration: none;
            transition: var(--transition);
        }

        .article-tags .tag-link:hover {
            background: #D0EEEE;
            color: #086B6B;
        }

        .article-share {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .article-share span {
            font-size: 13px;
            color: var(--text-muted);
        }

        .article-share a {
            width: 34px;
            height: 34px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            transition: var(--transition);
        }

        .article-share a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== Related Section ===== */
        .related-section {
            padding: 84px 0;
            background: #fff;
        }

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

        .section-header h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 8px;
        }

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

        .related-card {
            display: block;
            background: var(--card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            height: 100%;
            text-decoration: none;
            color: inherit;
        }

        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(46, 107, 230, 0.15);
        }

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

        .related-img {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
        }

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

        .related-card:hover .related-img img {
            transform: scale(1.04);
        }

        .tag-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(255, 255, 255, 0.95);
            color: var(--primary);
            border-radius: 999px;
            padding: 4px 14px;
            font-size: 12px;
            font-weight: 600;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
        }

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

        .related-card-body h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--dark);
            margin-bottom: 8px;
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: var(--transition);
        }

        .related-card-body p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.65;
            margin-bottom: 12px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 12px;
            color: var(--text-muted);
        }

        .related-card-meta .read-more {
            color: var(--primary);
            font-weight: 500;
        }

        .related-card:hover .related-card-meta .read-more {
            gap: 6px;
        }

        .read-more i {
            transition: transform 0.25s ease;
        }

        .related-card:hover .read-more i {
            transform: translateX(3px);
        }

        /* ===== Article CTA ===== */
        .article-cta {
            padding: 64px 0;
            background: linear-gradient(120deg, #2E6BE6 0%, #4A83E8 55%, #5A92EA 100%);
            position: relative;
            overflow: hidden;
        }

        .article-cta::before {
            content: "";
            position: absolute;
            right: -60px;
            top: -60px;
            width: 300px;
            height: 300px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-box {
            max-width: 900px;
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            position: relative;
            z-index: 1;
        }

        .cta-text {
            flex: 1;
            min-width: 280px;
        }

        .cta-text h2 {
            color: #fff;
            font-size: 26px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .cta-text p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 15px;
            margin: 0;
        }

        .article-cta .btn-light {
            flex-shrink: 0;
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--dark);
            color: #AEBFCF;
            padding-top: 56px;
            font-size: 14px;
            line-height: 1.8;
        }

        .footer .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }

        .footer .footer-brand .brand-icon {
            background: var(--primary);
            box-shadow: none;
        }

        .footer .footer-brand span {
            color: #fff;
            font-size: 18px;
            font-weight: 700;
        }

        .footer-desc {
            color: #8FA3BA;
            font-size: 13px;
            line-height: 1.8;
            margin-bottom: 20px;
        }

        .footer h5 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 16px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer h5::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 28px;
            height: 3px;
            background: var(--primary);
            border-radius: 3px;
        }

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

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

        .footer ul li a {
            color: #AEBFCF;
            text-decoration: none;
            transition: var(--transition);
            font-size: 14px;
        }

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

        .footer-contact li {
            display: flex;
            align-items: flex-start;
            gap: 8px;
        }

        .footer-contact i {
            color: var(--primary);
            margin-top: 4px;
            width: 16px;
            text-align: center;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            text-align: center;
            padding: 20px 0;
            margin-top: 40px;
            color: #7E94AB;
            font-size: 13px;
        }

        @media (max-width: 991.98px) {
            .article-body {
                padding: 32px 28px;
            }

            .article-hero h1 {
                font-size: 28px;
            }

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

        @media (max-width: 767.98px) {
            .brand-text {
                font-size: 16px;
            }

            .brand-icon {
                width: 32px;
                height: 32px;
                font-size: 15px;
            }

            .brand-actions .btn-sm {
                padding: 6px 12px;
                font-size: 13px;
            }

            .article-hero {
                padding: 40px 0 0;
            }

            .article-hero h1 {
                font-size: 24px;
            }

            .article-meta {
                gap: 6px 10px;
                font-size: 12px;
                margin-bottom: 24px;
            }

            .article-cover-container {
                padding-bottom: 32px;
            }

            .article-content-section {
                padding: 40px 0 32px;
            }

            .article-body {
                padding: 24px 20px;
                border-radius: var(--radius-md);
            }

            .article-author-box {
                flex-direction: column;
                text-align: center;
                padding: 20px;
            }

            .article-tools {
                flex-direction: column;
                align-items: flex-start;
            }

            .cta-box {
                flex-direction: column;
                text-align: center;
            }

            .cta-text h2 {
                font-size: 22px;
            }

            .related-section {
                padding: 48px 0;
            }

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

        @media (max-width: 575.98px) {
            .article-hero h1 {
                font-size: 21px;
            }

            .article-subhead {
                font-size: 14px;
            }

            .article-meta .meta-badge {
                width: 100%;
                text-align: center;
            }

            .article-body p {
                font-size: 15px;
            }

            .breadcrumb-wrap .breadcrumb-item.active {
                max-width: 160px;
            }
        }

        .channel-scroll {
            scrollbar-width: none;
        }