/* roulang page: index */
:root {
            --primary: #1A5CFF;
            --primary-dark: #0d47d4;
            --primary-light: #e8efff;
            --primary-bg: #F7F9FC;
            --accent: #00A88F;
            --text-dark: #101828;
            --text-body: #475467;
            --text-muted: #667085;
            --border: #E4E7EC;
            --card-bg: #FFFFFF;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(16, 24, 40, 0.06);
            --shadow-md: 0 8px 24px rgba(16, 24, 40, 0.12);
            --shadow-lg: 0 16px 48px rgba(16, 24, 40, 0.16);
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 72px;
            --transition: all 0.3s ease;
            --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-body);
            background-color: var(--primary-bg);
            overflow-x: hidden;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 3px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .container-wide {
            max-width: 1360px;
            margin: 0 auto;
            padding: 0 20px;
        }
        section {
            padding: var(--spacing-lg) 0;
        }
        @media (min-width: 1024px) {
            section {
                padding: var(--spacing-xl) 0;
            }
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--text-dark);
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 16px;
        }
        h1 {
            font-size: 32px;
            font-weight: 800;
        }
        h2 {
            font-size: 26px;
            font-weight: 700;
        }
        h3 {
            font-size: 20px;
            font-weight: 600;
        }
        p {
            margin-bottom: 16px;
            color: var(--text-body);
            line-height: 1.8;
        }
        .text-muted {
            color: var(--text-muted);
        }
        .text-dark {
            color: var(--text-dark);
        }
        .text-primary {
            color: var(--primary);
        }
        .text-accent {
            color: var(--accent);
        }
        .fw-600 {
            font-weight: 600;
        }
        .fw-700 {
            font-weight: 700;
        }
        .fw-800 {
            font-weight: 800;
        }
        .fs-sm {
            font-size: 14px;
        }
        .fs-xs {
            font-size: 13px;
        }
        .fs-lg {
            font-size: 18px;
        }
        .mt-0 {
            margin-top: 0;
        }
        .mb-0 {
            margin-bottom: 0;
        }
        .mb-sm {
            margin-bottom: 8px;
        }
        .mb-md {
            margin-bottom: 16px;
        }
        .mb-lg {
            margin-bottom: 24px;
        }
        .mb-xl {
            margin-bottom: 40px;
        }
        .mt-sm {
            margin-top: 8px;
        }
        .mt-md {
            margin-top: 16px;
        }
        .mt-lg {
            margin-top: 24px;
        }
        .mt-xl {
            margin-top: 40px;
        }
        .text-center {
            text-align: center;
        }
        .d-flex {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }
        .align-center {
            align-items: center;
        }
        .justify-between {
            justify-content: space-between;
        }
        .gap-sm {
            gap: 8px;
        }
        .gap-md {
            gap: 16px;
        }
        .gap-lg {
            gap: 24px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            font-size: 15px;
            font-weight: 600;
            font-family: var(--font-stack);
            border-radius: var(--radius-sm);
            border: 1px solid transparent;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
            line-height: 1.4;
            text-decoration: none;
            white-space: nowrap;
        }
        .btn-primary {
            background-color: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .btn-primary:hover {
            background-color: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(26, 92, 255, 0.35);
        }
        .btn-secondary {
            background-color: transparent;
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-secondary:hover {
            background-color: var(--primary);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(26, 92, 255, 0.25);
        }
        .btn-white {
            background-color: #fff;
            color: var(--primary);
            border-color: #fff;
        }
        .btn-white:hover {
            background-color: var(--primary-light);
            color: var(--primary-dark);
            transform: translateY(-1px);
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
        }
        .btn-lg {
            padding: 16px 40px;
            font-size: 16px;
        }
        .btn-block {
            width: 100%;
        }
        .card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 24px;
            transition: var(--transition);
        }
        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 12px;
        }
        .tag-white {
            background: rgba(255, 255, 255, 0.2);
            color: #fff;
        }
        .tag-accent {
            background: #E6F7F4;
            color: var(--accent);
        }
        .divider {
            border: none;
            border-top: 1px solid var(--border);
            margin: 32px 0;
        }
        .badge {
            display: inline-block;
            background: var(--accent);
            color: #fff;
            padding: 2px 10px;
            border-radius: 12px;
            font-size: 12px;
            font-weight: 700;
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 680px;
            margin-bottom: 32px;
            line-height: 1.7;
        }
        .section-header {
            margin-bottom: 32px;
        }
        .section-header .tag {
            margin-bottom: 8px;
        }

        /* Top Info Bar */
        .top-info-bar {
            background: #0d1b3e;
            color: rgba(255, 255, 255, 0.85);
            padding: 8px 0;
            font-size: 13px;
            position: relative;
            z-index: 100;
        }
        .top-info-bar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
        }
        .top-info-bar .left-info {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }
        .top-info-bar .right-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .top-info-bar a {
            color: rgba(255, 255, 255, 0.9);
            font-size: 13px;
            font-weight: 500;
        }
        .top-info-bar a:hover {
            color: #fff;
            text-decoration: underline;
        }
        .top-info-bar .dot-sep {
            color: rgba(255, 255, 255, 0.4);
        }

        /* Main Nav */
        .site-header {
            background: #fff;
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 99;
            box-shadow: 0 2px 12px rgba(16, 24, 40, 0.04);
        }
        .site-header .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 12px 20px;
            flex-wrap: wrap;
            gap: 8px;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
        }
        .brand-logo .logo-icon {
            width: 40px;
            height: 40px;
            background: var(--primary);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 20px;
            font-weight: 800;
            letter-spacing: -1px;
            flex-shrink: 0;
        }
        .brand-logo .logo-text {
            font-size: 20px;
            font-weight: 800;
            color: var(--text-dark);
            letter-spacing: 1px;
            line-height: 1.2;
        }
        .brand-logo .logo-text span {
            color: var(--primary);
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
            flex-wrap: wrap;
        }
        .nav-menu li {
            list-style: none;
            margin: 0;
        }
        .nav-menu a {
            display: block;
            padding: 10px 16px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-body);
            border-radius: var(--radius-sm);
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-menu a:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .nav-menu a.active {
            color: var(--primary);
            background: var(--primary-light);
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 10px 14px;
            cursor: pointer;
            font-size: 20px;
            color: var(--text-dark);
            transition: var(--transition);
        }
        .nav-toggle:hover {
            border-color: var(--primary);
            color: var(--primary);
        }

        /* Hero */
        .hero-section {
            padding: 0;
            position: relative;
            min-height: 560px;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
            background: #0d1b3e;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.45;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13, 27, 62, 0.85) 0%, rgba(26, 92, 255, 0.45) 60%, rgba(13, 27, 62, 0.7) 100%);
        }
        .hero-content {
            position: relative;
            z-index: 10;
            text-align: center;
            padding: 60px 20px;
            max-width: 820px;
            margin: 0 auto;
        }
        .hero-play {
            width: 72px;
            height: 72px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.18);
            border: 2px solid rgba(255, 255, 255, 0.5);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 28px;
            cursor: pointer;
            transition: var(--transition);
            margin-bottom: 24px;
            backdrop-filter: blur(4px);
        }
        .hero-play:hover {
            background: rgba(255, 255, 255, 0.35);
            transform: scale(1.08);
            border-color: #fff;
        }
        .hero-content h1 {
            color: #fff;
            font-size: 36px;
            font-weight: 800;
            letter-spacing: 2px;
            margin-bottom: 16px;
            text-shadow: 0 2px 16px rgba(0, 0, 0, 0.5);
        }
        .hero-content .hero-desc {
            color: rgba(255, 255, 255, 0.9);
            font-size: 18px;
            line-height: 1.8;
            margin-bottom: 32px;
            max-width: 620px;
            margin-left: auto;
            margin-right: auto;
        }
        .hero-cta-group {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .hero-cta-group .btn {
            font-size: 16px;
            padding: 14px 32px;
        }

        /* Flash Deals Rail */
        .flash-deals {
            background: #fff;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .flash-deals .container {
            padding-top: 32px;
            padding-bottom: 32px;
        }
        .flash-track {
            display: flex;
            gap: 16px;
            overflow-x: auto;
            scroll-snap-type: x mandatory;
            padding-bottom: 12px;
            -webkit-overflow-scrolling: touch;
        }
        .flash-track::-webkit-scrollbar {
            height: 4px;
        }
        .flash-track::-webkit-scrollbar-thumb {
            background: var(--border);
            border-radius: 4px;
        }
        .flash-item {
            min-width: 240px;
            max-width: 260px;
            scroll-snap-align: start;
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 16px;
            transition: var(--transition);
            flex-shrink: 0;
        }
        .flash-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .flash-item img {
            width: 100%;
            height: 140px;
            object-fit: cover;
            border-radius: var(--radius-sm);
            margin-bottom: 12px;
        }
        .flash-item .flash-name {
            font-weight: 700;
            font-size: 16px;
            color: var(--text-dark);
            margin-bottom: 4px;
        }
        .flash-item .flash-desc {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 8px;
            line-height: 1.5;
        }
        .flash-item .flash-price {
            font-size: 18px;
            font-weight: 800;
            color: var(--primary);
        }
        .flash-item .flash-old-price {
            font-size: 13px;
            color: var(--text-muted);
            text-decoration: line-through;
            margin-left: 6px;
        }
        .flash-item .btn {
            margin-top: 8px;
            width: 100%;
            font-size: 13px;
            padding: 8px 12px;
        }

        /* Stock Alert */
        .stock-alert {
            background: #fffaf0;
            border-bottom: 1px solid #f0e6d0;
        }
        .stock-alert .container {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            padding: 20px;
        }
        .stock-alert .stock-icon {
            font-size: 28px;
            color: #e67e22;
        }
        .stock-alert .stock-text {
            font-weight: 600;
            color: #8a6d3b;
            font-size: 15px;
            flex: 1;
            min-width: 200px;
        }
        .stock-alert .stock-bar {
            flex: 2;
            min-width: 200px;
            background: #f0e6d0;
            border-radius: 8px;
            height: 8px;
            overflow: hidden;
        }
        .stock-alert .stock-bar-fill {
            height: 100%;
            background: #e67e22;
            border-radius: 8px;
            width: 67%;
            transition: width 1.5s ease;
        }
        .stock-alert .stock-count {
            font-size: 13px;
            color: #8a6d3b;
            font-weight: 600;
            white-space: nowrap;
        }

        /* Pain Point Section */
        .pain-section {
            background: var(--primary-bg);
        }
        .pain-section .pain-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 32px;
            align-items: center;
        }
        @media (min-width: 768px) {
            .pain-section .pain-grid {
                grid-template-columns: 1fr 1fr;
                gap: 48px;
            }
        }
        .pain-section .pain-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
        }
        .pain-section .pain-image img {
            width: 100%;
            height: 320px;
            object-fit: cover;
        }
        .pain-section .pain-text h2 {
            margin-bottom: 16px;
        }
        .pain-section .pain-text p {
            margin-bottom: 14px;
            line-height: 1.85;
        }

        /* Solution Section */
        .solution-section {
            background: #fff;
        }
        .solution-steps {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
            counter-reset: step;
        }
        @media (min-width: 640px) {
            .solution-steps {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 1024px) {
            .solution-steps {
                grid-template-columns: repeat(4, 1fr);
            }
        }
        .solution-step {
            counter-increment: step;
            background: var(--primary-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 20px;
            position: relative;
            transition: var(--transition);
        }
        .solution-step:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: var(--primary);
        }
        .solution-step .step-num {
            font-size: 36px;
            font-weight: 800;
            color: var(--primary);
            opacity: 0.5;
            line-height: 1;
            margin-bottom: 10px;
        }
        .solution-step h3 {
            font-size: 18px;
            margin-bottom: 8px;
        }
        .solution-step p {
            font-size: 14px;
            line-height: 1.6;
            margin-bottom: 0;
        }

        /* Stats Section */
        .stats-section {
            background: linear-gradient(135deg, #0d1b3e 0%, #1A5CFF 100%);
            color: #fff;
            padding: 48px 0;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
            text-align: center;
        }
        @media (min-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(4, 1fr);
                gap: 32px;
            }
        }
        .stat-item .stat-number {
            font-size: 36px;
            font-weight: 800;
            color: #fff;
            letter-spacing: 1px;
            margin-bottom: 4px;
        }
        .stat-item .stat-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.85);
            font-weight: 500;
        }
        .stat-item .stat-desc {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.65);
            margin-top: 4px;
        }

        /* Media Highlights */
        .media-highlights {
            background: var(--primary-bg);
        }
        .media-scroll {
            display: flex;
            gap: 16px;
            overflow-x: auto;
            scroll-snap-type: x mandatory;
            padding-bottom: 12px;
            -webkit-overflow-scrolling: touch;
        }
        .media-scroll::-webkit-scrollbar {
            height: 6px;
        }
        .media-scroll::-webkit-scrollbar-thumb {
            background: var(--border);
            border-radius: 6px;
        }
        .media-card {
            min-width: 280px;
            max-width: 320px;
            scroll-snap-align: start;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .media-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .media-card img {
            width: 100%;
            height: 160px;
            object-fit: cover;
        }
        .media-card .media-body {
            padding: 16px;
        }
        .media-card .media-type {
            font-size: 12px;
            font-weight: 700;
            color: var(--primary);
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 6px;
        }
        .media-card .media-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .media-card .media-desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.5;
            margin-bottom: 0;
        }

        /* Timeline */
        .timeline-section {
            background: #fff;
        }
        .timeline {
            position: relative;
            padding-left: 28px;
            margin-top: 24px;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 8px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--border);
        }
        .timeline-item {
            position: relative;
            margin-bottom: 28px;
            padding-left: 16px;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -26px;
            top: 4px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: var(--primary);
            border: 3px solid #fff;
            box-shadow: 0 0 0 3px var(--primary-light);
        }
        .timeline-item .tl-time {
            font-size: 13px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 2px;
        }
        .timeline-item .tl-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 4px;
        }
        .timeline-item .tl-action {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* Entry Matrix */
        .entry-matrix {
            background: var(--primary-bg);
        }
        .entry-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
        }
        @media (min-width: 640px) {
            .entry-grid {
                grid-template-columns: repeat(4, 1fr);
            }
        }
        @media (min-width: 1024px) {
            .entry-grid {
                grid-template-columns: repeat(8, 1fr);
            }
        }
        .entry-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 20px 10px;
            text-align: center;
            transition: var(--transition);
            cursor: pointer;
            text-decoration: none;
            display: block;
        }
        .entry-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: var(--primary);
        }
        .entry-item .entry-icon {
            font-size: 28px;
            color: var(--primary);
            margin-bottom: 8px;
        }
        .entry-item .entry-label {
            font-size: 13px;
            font-weight: 600;
            color: var(--text-dark);
            line-height: 1.3;
        }
        .entry-item .entry-sub {
            font-size: 11px;
            color: var(--text-muted);
            margin-top: 2px;
        }

        /* Testimonials */
        .testimonials-section {
            background: #fff;
        }
        .testimonial-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }
        @media (min-width: 768px) {
            .testimonial-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }
        .testimonial-card {
            background: var(--primary-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 24px;
            transition: var(--transition);
        }
        .testimonial-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .testimonial-card .t-quote {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 16px;
            font-style: italic;
        }
        .testimonial-card .t-author {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .testimonial-card .t-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--primary);
            font-weight: 700;
            flex-shrink: 0;
        }
        .testimonial-card .t-name {
            font-size: 14px;
            font-weight: 700;
            color: var(--text-dark);
        }
        .testimonial-card .t-role {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* Brand Intro */
        .brand-intro {
            background: var(--primary-bg);
        }
        .brand-intro .container {
            max-width: 860px;
        }
        .brand-intro .brand-text {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 40px 32px;
            box-shadow: var(--shadow-sm);
            border-left: 4px solid var(--primary);
        }
        .brand-intro .brand-text p {
            margin-bottom: 16px;
            line-height: 1.85;
            font-size: 16px;
        }
        .brand-intro .brand-text p:last-child {
            margin-bottom: 0;
        }

        /* News Section */
        .news-section {
            background: #fff;
        }
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .news-item {
            display: flex;
            gap: 20px;
            align-items: flex-start;
            background: var(--primary-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 20px;
            transition: var(--transition);
            flex-wrap: wrap;
        }
        .news-item:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--primary);
        }
        .news-date {
            min-width: 90px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-sm);
            padding: 6px 10px;
            font-size: 12px;
            font-weight: 700;
            text-align: center;
            flex-shrink: 0;
            line-height: 1.4;
        }
        .news-body {
            flex: 1;
            min-width: 220px;
        }
        .news-body .news-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .news-body .news-summary {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 8px;
        }
        .news-body .btn-read {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: var(--transition);
        }
        .news-body .btn-read:hover {
            color: var(--primary-dark);
            gap: 8px;
        }

        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, #0d1b3e 0%, #1A5CFF 100%);
            color: #fff;
            text-align: center;
            padding: 64px 20px;
        }
        .cta-section h2 {
            color: #fff;
            font-size: 28px;
            margin-bottom: 12px;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 16px;
            margin-bottom: 24px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-section .btn-group {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .cta-section .btn-white {
            color: var(--primary-dark);
        }

        /* FAQ Section */
        .faq-section {
            background: var(--primary-bg);
        }
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }
        .faq-item summary {
            list-style: none;
            cursor: pointer;
            padding: 18px 24px;
            font-weight: 700;
            font-size: 16px;
            color: var(--text-dark);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            position: relative;
            user-select: none;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::after {
            content: '+';
            font-size: 22px;
            font-weight: 700;
            color: var(--primary);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item[open] summary::after {
            content: '−';
            transform: rotate(180deg);
        }
        .faq-item .faq-answer {
            padding: 0 24px 20px;
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.8;
        }

        /* Footer */
        .site-footer {
            background: #0d1b3e;
            color: rgba(255, 255, 255, 0.75);
            padding: 48px 0 24px;
        }
        .site-footer .container {
            max-width: 1200px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        @media (min-width: 640px) {
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 1024px) {
            .footer-grid {
                grid-template-columns: 2fr 1fr 2fr 1fr;
            }
        }
        .footer-brand .footer-logo {
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            letter-spacing: 1px;
            margin-bottom: 12px;
            display: inline-block;
        }
        .footer-brand .footer-logo span {
            color: #5b8cff;
        }
        .footer-brand p {
            color: rgba(255, 255, 255, 0.65);
            font-size: 13px;
            line-height: 1.7;
            margin-bottom: 12px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 13px;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 20px;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
        }
        .footer-bottom .footer-links {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
            margin-bottom: 10px;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 13px;
            text-decoration: none;
        }
        .footer-bottom a:hover {
            color: #fff;
        }
        .footer-bottom .beian {
            margin-top: 4px;
        }

        /* Responsive with Foundation */
        @media (max-width: 1024px) {
            h1 {
                font-size: 28px;
            }
            h2 {
                font-size: 22px;
            }
            h3 {
                font-size: 18px;
            }
            .nav-menu {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #fff;
                padding: 12px 0;
                border-top: 1px solid var(--border);
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
                z-index: 98;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu a {
                padding: 14px 24px;
                font-size: 15px;
                width: 100%;
                text-align: left;
                border-bottom: 1px solid var(--primary-light);
            }
            .nav-menu li:last-child a {
                border-bottom: none;
            }
            .nav-toggle {
                display: inline-block;
            }
            .site-header .container {
                position: relative;
            }
            .hero-content h1 {
                font-size: 28px;
            }
            .hero-content .hero-desc {
                font-size: 15px;
            }
            .btn {
                padding: 10px 20px;
                font-size: 14px;
            }
            .btn-lg {
                padding: 14px 28px;
                font-size: 15px;
            }
            section {
                padding: 40px 0;
            }
        }
        @media (max-width: 640px) {
            .top-info-bar .container {
                flex-direction: column;
                text-align: center;
                gap: 4px;
            }
            .top-info-bar .right-actions {
                justify-content: center;
            }
            .hero-section {
                min-height: 480px;
            }
            .hero-content {
                padding: 40px 16px;
            }
            .hero-content h1 {
                font-size: 24px;
                letter-spacing: 1px;
            }
            .hero-play {
                width: 56px;
                height: 56px;
                font-size: 22px;
                margin-bottom: 16px;
            }
            .hero-cta-group {
                flex-direction: column;
                gap: 10px;
            }
            .hero-cta-group .btn {
                width: 100%;
                justify-content: center;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-item .stat-number {
                font-size: 26px;
            }
            .solution-steps {
                grid-template-columns: 1fr;
            }
            .entry-grid {
                grid-template-columns: repeat(4, 1fr);
                gap: 8px;
            }
            .entry-item {
                padding: 14px 6px;
            }
            .entry-item .entry-icon {
                font-size: 20px;
            }
            .entry-item .entry-label {
                font-size: 11px;
            }
            .news-item {
                flex-direction: column;
                gap: 12px;
            }
            .news-date {
                min-width: auto;
                display: inline-block;
            }
            .testimonial-grid {
                grid-template-columns: 1fr;
            }
            .brand-intro .brand-text {
                padding: 24px 20px;
            }
            .cta-section h2 {
                font-size: 22px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
                text-align: center;
            }
            .footer-col ul li a {
                display: inline-block;
            }
            .footer-bottom .footer-links {
                gap: 10px;
                font-size: 12px;
            }
            .flash-item {
                min-width: 180px;
                max-width: 200px;
            }
            .flash-item img {
                height: 100px;
            }
            .media-card {
                min-width: 220px;
                max-width: 260px;
            }
            .media-card img {
                height: 120px;
            }
            .faq-item summary {
                padding: 14px 18px;
                font-size: 14px;
            }
            .faq-item .faq-answer {
                padding: 0 18px 16px;
                font-size: 13px;
            }
            .container {
                padding: 0 16px;
            }
            .section-header h2 {
                font-size: 20px;
            }
            .section-subtitle {
                font-size: 14px;
            }
        }

        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: 0.01ms !important;
                scroll-behavior: auto !important;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #1A5CFF;
            --primary-dark: #0d47d4;
            --primary-light: #e8efff;
            --primary-bg: #F7F9FC;
            --accent: #00A88F;
            --text-dark: #101828;
            --text-body: #475467;
            --text-muted: #667085;
            --border: #E4E7EC;
            --card-bg: #FFFFFF;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(16, 24, 40, 0.06);
            --shadow-md: 0 8px 24px rgba(16, 24, 40, 0.12);
            --shadow-lg: 0 16px 48px rgba(16, 24, 40, 0.16);
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 72px;
            --transition: all 0.3s ease;
            --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-body);
            background-color: var(--primary-bg);
            overflow-x: hidden;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 3px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .container-wide {
            max-width: 1360px;
            margin: 0 auto;
            padding: 0 20px;
        }
        section {
            padding: var(--spacing-lg) 0;
        }
        .text-muted {
            color: var(--text-muted);
        }
        .text-dark {
            color: var(--text-dark);
        }
        .text-primary {
            color: var(--primary);
        }
        .text-accent {
            color: var(--accent);
        }
        .text-center {
            text-align: center;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            font-size: 15px;
            font-weight: 600;
            font-family: var(--font-stack);
            border-radius: var(--radius-sm);
            border: 1px solid transparent;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
            line-height: 1.4;
            text-decoration: none;
            white-space: nowrap;
        }
        .btn-primary {
            background-color: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .btn-primary:hover {
            background-color: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(26, 92, 255, 0.35);
        }
        .btn-secondary {
            background-color: transparent;
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-secondary:hover {
            background-color: var(--primary);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(26, 92, 255, 0.25);
        }
        .btn-white {
            background-color: #fff;
            color: var(--primary);
            border-color: #fff;
        }
        .btn-white:hover {
            background-color: var(--primary-light);
            color: var(--primary-dark);
            transform: translateY(-1px);
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
        }
        .btn-lg {
            padding: 16px 40px;
            font-size: 16px;
        }
        .btn-block {
            width: 100%;
        }
        .card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 24px;
            transition: var(--transition);
        }
        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 12px;
        }
        .tag-white {
            background: rgba(255, 255, 255, 0.2);
            color: #fff;
        }
        .tag-accent {
            background: #E6F7F4;
            color: var(--accent);
        }
        .divider {
            border: none;
            border-top: 1px solid var(--border);
            margin: 32px 0;
        }
        .badge {
            display: inline-block;
            background: var(--accent);
            color: #fff;
            padding: 2px 10px;
            border-radius: 12px;
            font-size: 12px;
            font-weight: 700;
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 680px;
            margin-bottom: 32px;
            line-height: 1.7;
        }
        .section-header {
            margin-bottom: 32px;
        }
        .section-header .tag {
            margin-bottom: 8px;
        }
        .top-info-bar {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.85);
            font-size: 13px;
            min-height: 38px;
            display: flex;
            align-items: center;
        }
        .top-info-bar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
        }
        .top-info-bar a {
            color: #fff;
            font-weight: 600;
        }
        .top-info-bar a:hover {
            color: #b8cdff;
        }
        .site-header {
            background: #fff;
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 12px rgba(16, 24, 40, 0.04);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 72px;
            position: relative;
        }
        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 24px;
            font-weight: 800;
            color: var(--text-dark);
            letter-spacing: 0.5px;
        }
        .brand-logo:hover {
            color: var(--text-dark);
        }
        .logo-icon {
            width: 40px;
            height: 40px;
            background: var(--primary);
            color: #fff;
            border-radius: 10px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 800;
            flex-shrink: 0;
        }
        .logo-text {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-dark);
        }
        .logo-text span {
            color: var(--primary);
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            color: var(--text-dark);
            cursor: pointer;
            padding: 8px 12px;
            border-radius: 8px;
            transition: var(--transition);
        }
        .nav-toggle:hover {
            background: var(--primary-light);
            color: var(--primary);
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-menu li {
            margin: 0;
        }
        .nav-menu a {
            display: inline-block;
            padding: 10px 16px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-body);
            border-radius: 8px;
            transition: var(--transition);
            position: relative;
        }
        .nav-menu a:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .nav-menu a.active {
            color: var(--primary);
            background: var(--primary-light);
        }
        .nav-menu a.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 16px;
            right: 16px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }
        .hero-banner {
            background: linear-gradient(135deg, #f0f5ff 0%, #e8efff 40%, #f7f9fc 100%);
            border-bottom: 1px solid var(--border);
            padding: 48px 0;
        }
        .hero-banner .container {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }
        .hero-banner h1 {
            font-size: 36px;
            font-weight: 700;
            color: var(--text-dark);
            margin: 0 0 16px;
            line-height: 1.3;
        }
        .hero-banner .hero-subtitle {
            font-size: 18px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 28px;
        }
        .hero-banner .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .hero-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border);
        }
        .hero-image img {
            width: 100%;
            height: 340px;
            object-fit: cover;
        }
        .article-body {
            background: #fff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 48px;
            border: 1px solid var(--border);
        }
        .article-body h2 {
            font-size: 24px;
            font-weight: 600;
            color: var(--text-dark);
            margin: 32px 0 16px;
            line-height: 1.4;
        }
        .article-body h2:first-child {
            margin-top: 0;
        }
        .article-body h3 {
            font-size: 19px;
            font-weight: 600;
            color: var(--text-dark);
            margin: 24px 0 12px;
        }
        .article-body p {
            margin-bottom: 16px;
            color: var(--text-body);
            line-height: 1.9;
        }
        .article-body ul,
        .article-body ol {
            margin: 16px 0;
            padding-left: 24px;
        }
        .article-body li {
            margin-bottom: 8px;
        }
        .article-body blockquote {
            border-left: 4px solid var(--primary);
            background: var(--primary-bg);
            padding: 16px 20px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 20px 0;
            color: var(--text-dark);
            font-style: normal;
        }
        .article-body img {
            border-radius: var(--radius-md);
            margin: 24px 0;
            box-shadow: var(--shadow-sm);
        }
        .guide-list {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .guide-list-item {
            display: flex;
            gap: 20px;
            align-items: flex-start;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 24px;
            margin-bottom: 16px;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .guide-list-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .guide-list-icon {
            width: 48px;
            height: 48px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            flex-shrink: 0;
        }
        .guide-list-content h4 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-dark);
            margin: 0 0 6px;
        }
        .guide-list-content p {
            margin: 0;
            color: var(--text-muted);
            font-size: 15px;
        }
        .step-flow {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 0;
            counter-reset: step-counter;
            position: relative;
        }
        .step-flow::before {
            content: '';
            position: absolute;
            top: 32px;
            left: 10%;
            right: 10%;
            height: 2px;
            background: var(--border);
            z-index: 0;
        }
        .step-item {
            text-align: center;
            padding: 0 16px;
            position: relative;
            z-index: 1;
        }
        .step-number {
            width: 64px;
            height: 64px;
            background: #fff;
            border: 3px solid var(--primary);
            color: var(--primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            font-weight: 700;
            margin: 0 auto 16px;
            counter-increment: step-counter;
        }
        .step-number::before {
            content: counter(step-counter);
        }
        .step-item h4 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-dark);
            margin: 0 0 8px;
        }
        .step-item p {
            font-size: 14px;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.7;
        }
        .stats-bar {
            background: var(--primary-dark);
            border-radius: var(--radius-lg);
            padding: 40px;
            color: #fff;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            box-shadow: var(--shadow-md);
        }
        .stat-item {
            text-align: center;
        }
        .stat-value {
            font-size: 36px;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }
        .stat-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.8);
            margin-top: 8px;
        }
        .resource-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }
        .resource-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .resource-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .resource-item i {
            font-size: 28px;
            color: var(--primary);
            width: 40px;
            text-align: center;
            flex-shrink: 0;
        }
        .resource-item h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-dark);
            margin: 0 0 4px;
        }
        .resource-item p {
            margin: 0;
            font-size: 14px;
            color: var(--text-muted);
        }
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: var(--radius-lg);
            padding: 56px 48px;
            text-align: center;
            color: #fff;
            box-shadow: var(--shadow-lg);
        }
        .cta-section h2 {
            font-size: 30px;
            font-weight: 700;
            color: #fff;
            margin: 0 0 12px;
        }
        .cta-section p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.85);
            margin: 0 auto 28px;
            max-width: 600px;
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item summary {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 16px;
            color: var(--text-dark);
            cursor: pointer;
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            transition: var(--transition);
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 14px;
            color: var(--text-muted);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item[open] summary::after {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-item summary:hover {
            color: var(--primary);
        }
        .faq-item .faq-answer {
            padding: 0 24px 20px;
            color: var(--text-body);
            line-height: 1.8;
        }
        .faq-item[open] {
            border-color: var(--primary);
            box-shadow: var(--shadow-sm);
        }
        .site-footer {
            background: #0f172a;
            color: rgba(255, 255, 255, 0.75);
            padding: 56px 0 24px;
            margin-top: 40px;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-logo {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            display: inline-block;
            margin-bottom: 12px;
        }
        .footer-logo span {
            color: #6b9aff;
        }
        .footer-logo:hover {
            color: #fff;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.65);
            max-width: 340px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin: 0 0 16px;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-col li {
            margin-bottom: 10px;
        }
        .footer-col a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 14px;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: #fff;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
        }
        .footer-links {
            display: flex;
            gap: 8px;
            align-items: center;
        }
        .footer-links a {
            color: rgba(255, 255, 255, 0.65);
        }
        .footer-links a:hover {
            color: #fff;
        }
        .beian {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
        }
        @media (max-width: 1024px) {
            .hero-banner .container {
                grid-template-columns: 1fr;
                text-align: center;
            }
            .hero-banner .hero-actions {
                justify-content: center;
            }
            .hero-image img {
                height: 280px;
            }
            .step-flow {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .step-flow::before {
                display: none;
            }
            .stats-bar {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
                padding: 32px 24px;
            }
            .resource-list {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 768px) {
            section {
                padding: 32px 0;
            }
            .nav-toggle {
                display: block;
            }
            .nav-menu {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                align-items: stretch;
                padding: 16px 20px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-md);
                border-radius: 0 0 var(--radius-md) var(--radius-md);
            }
            .nav-menu.is-open {
                display: flex;
            }
            .nav-menu a {
                padding: 14px 16px;
                font-size: 16px;
                border-radius: 8px;
            }
            .nav-menu a.active::after {
                display: none;
            }
            .hero-banner {
                padding: 32px 0;
            }
            .hero-banner h1 {
                font-size: 28px;
            }
            .hero-banner .hero-subtitle {
                font-size: 16px;
            }
            .hero-banner .hero-actions {
                flex-direction: column;
            }
            .btn {
                width: 100%;
            }
            .article-body {
                padding: 24px;
            }
            .article-body h2 {
                font-size: 21px;
            }
            .guide-list-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
            .step-flow {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .stats-bar {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
                padding: 24px 16px;
            }
            .stat-value {
                font-size: 28px;
            }
            .cta-section {
                padding: 40px 24px;
            }
            .cta-section h2 {
                font-size: 24px;
            }
            .cta-section p {
                font-size: 15px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .top-info-bar .container {
                flex-direction: column;
                text-align: center;
                padding: 6px 20px;
            }
        }
        @media (max-width: 520px) {
            .hero-banner h1 {
                font-size: 24px;
            }
            .hero-image img {
                height: 220px;
            }
            .article-body {
                padding: 20px;
            }
            .stats-bar {
                grid-template-columns: 1fr;
            }
            .stat-value {
                font-size: 26px;
            }
            .logo-text {
                font-size: 18px;
            }
            .logo-icon {
                width: 34px;
                height: 34px;
                font-size: 17px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #1A5CFF;
            --primary-dark: #0d47d4;
            --primary-light: #e8efff;
            --primary-bg: #F7F9FC;
            --accent: #00A88F;
            --text-dark: #101828;
            --text-body: #475467;
            --text-muted: #667085;
            --border: #E4E7EC;
            --card-bg: #FFFFFF;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(16, 24, 40, 0.06);
            --shadow-md: 0 8px 24px rgba(16, 24, 40, 0.12);
            --shadow-lg: 0 16px 48px rgba(16, 24, 40, 0.16);
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 72px;
            --transition: all 0.3s ease;
            --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-body);
            background-color: var(--primary-bg);
            overflow-x: hidden;
            margin: 0;
            padding: 0;
        }

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

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

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 3px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

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

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

        .container-wide {
            max-width: 1360px;
            margin: 0 auto;
            padding: 0 20px;
        }

        section {
            padding: var(--spacing-xl) 0;
        }

        .text-muted { color: var(--text-muted); }
        .text-dark { color: var(--text-dark); }
        .text-primary { color: var(--primary); }
        .text-accent { color: var(--accent); }
        .text-center { text-align: center; }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            font-size: 15px;
            font-weight: 600;
            font-family: var(--font-stack);
            border-radius: var(--radius-sm);
            border: 1px solid transparent;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
            line-height: 1.4;
            text-decoration: none;
            white-space: nowrap;
        }

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

        .btn-primary:hover {
            background-color: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(26, 92, 255, 0.35);
        }

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

        .btn-secondary:hover {
            background-color: var(--primary);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(26, 92, 255, 0.25);
        }

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

        .btn-white:hover {
            background-color: var(--primary-light);
            color: var(--primary-dark);
            transform: translateY(-1px);
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
        }

        .btn-lg {
            padding: 16px 40px;
            font-size: 16px;
        }

        .btn-block {
            width: 100%;
        }

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

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

        .tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 12px;
        }

        .tag-accent {
            background: #E6F7F4;
            color: var(--accent);
        }

        .tag-outline {
            background: transparent;
            border: 1px solid var(--border);
            color: var(--text-muted);
        }

        .badge {
            display: inline-block;
            background: var(--accent);
            color: #fff;
            padding: 2px 10px;
            border-radius: 12px;
            font-size: 12px;
            font-weight: 700;
        }

        .divider {
            border: none;
            border-top: 1px solid var(--border);
            margin: 32px 0;
        }

        .section-header {
            margin-bottom: 32px;
        }

        .section-header .tag {
            margin-bottom: 8px;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 680px;
            margin-bottom: 32px;
            line-height: 1.7;
        }

        h1, h2, h3, h4, h5, h6 {
            font-family: var(--font-stack);
            color: var(--text-dark);
            font-weight: 700;
            margin-top: 0;
            line-height: 1.3;
        }

        h1 { font-size: 36px; }
        h2 { font-size: 28px; }
        h3 { font-size: 22px; }
        h4 { font-size: 18px; }

        p {
            margin: 0 0 16px;
            line-height: 1.8;
        }

        ul, ol {
            margin: 0 0 16px;
            padding-left: 24px;
        }

        li {
            line-height: 1.8;
        }

        /* Top info bar */
        .top-info-bar {
            background: var(--text-dark);
            color: #fff;
            font-size: 13px;
            padding: 8px 0;
            position: relative;
            z-index: 100;
        }

        .top-info-bar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }

        .top-info-bar .left-info {
            display: flex;
            align-items: center;
            gap: 8px;
            color: #D0D5DD;
        }

        .top-info-bar .left-info i {
            color: var(--primary);
            font-size: 12px;
        }

        .top-info-bar .right-links {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .top-info-bar .right-links a {
            color: #D0D5DD;
            font-size: 13px;
            text-decoration: none;
            transition: var(--transition);
        }

        .top-info-bar .right-links a:hover {
            color: #fff;
        }

        /* Main navigation */
        .site-header {
            background: #fff;
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 99;
            box-shadow: 0 1px 4px rgba(16,24,40,0.04);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 24px;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
            color: var(--text-dark);
            font-weight: 700;
            font-size: 22px;
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

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

        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--primary) 0%, #3b82f6 100%);
            color: #fff;
            border-radius: 10px;
            font-size: 18px;
            font-weight: 800;
            flex-shrink: 0;
        }

        .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-dark);
        }

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

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

        .nav-menu li {
            margin: 0;
            padding: 0;
            list-style: none;
        }

        .nav-menu li a {
            display: block;
            padding: 8px 14px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-body);
            text-decoration: none;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            white-space: nowrap;
        }

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

        .nav-menu li a.active {
            color: var(--primary);
            background: var(--primary-light);
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            color: var(--text-dark);
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }

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

        /* Hero */
        .page-hero {
            background: linear-gradient(135deg, #F0F5FF 0%, #E8EFFF 40%, #F7F9FC 100%);
            padding: var(--spacing-xl) 0;
            position: relative;
            overflow: hidden;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -20%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(26,92,255,0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .page-hero .container {
            position: relative;
            z-index: 1;
        }

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

        .page-hero-content h1 {
            font-size: 40px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 16px;
            line-height: 1.25;
        }

        .page-hero-content h1 .highlight {
            color: var(--primary);
        }

        .page-hero-content .hero-subtitle {
            font-size: 18px;
            color: var(--text-body);
            margin-bottom: 28px;
            line-height: 1.7;
            max-width: 520px;
        }

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

        .hero-visual {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            aspect-ratio: 16/10;
            background: #fff;
        }

        .hero-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: var(--radius-lg);
        }

        .hero-visual-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 24px;
            background: linear-gradient(to top, rgba(16,24,40,0.85) 0%, transparent 100%);
            color: #fff;
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 12px;
        }

        .hero-visual-overlay .label {
            font-size: 13px;
            color: #D0D5DD;
        }

        .hero-visual-overlay .value {
            font-size: 22px;
            font-weight: 700;
        }

        /* Quick stats strip */
        .quick-stats {
            display: flex;
            gap: 0;
            background: #fff;
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            margin-top: -40px;
            position: relative;
            z-index: 2;
            flex-wrap: wrap;
        }

        .quick-stat-item {
            flex: 1;
            min-width: 140px;
            padding: 20px 24px;
            text-align: center;
            border-right: 1px solid var(--border);
        }

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

        .quick-stat-item .number {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 4px;
        }

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

        /* Deep content section */
        .deep-content {
            background: #fff;
        }

        .deep-content .content-prose {
            max-width: 860px;
            margin: 0 auto;
        }

        .deep-content .content-prose h2 {
            font-size: 26px;
            margin-bottom: 20px;
            color: var(--text-dark);
        }

        .deep-content .content-prose h3 {
            font-size: 20px;
            margin-top: 32px;
            margin-bottom: 12px;
            color: var(--text-dark);
        }

        .deep-content .content-prose p {
            font-size: 16px;
            line-height: 1.9;
            color: var(--text-body);
            margin-bottom: 16px;
        }

        /* Feature list */
        .feature-list-section {
            background: var(--primary-bg);
        }

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

        .feature-item {
            display: flex;
            gap: 20px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 28px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

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

        .feature-icon {
            flex-shrink: 0;
            width: 52px;
            height: 52px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
        }

        .feature-item h3 {
            font-size: 20px;
            margin-bottom: 8px;
            color: var(--text-dark);
        }

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

        /* Data / stats section */
        .data-section {
            background: linear-gradient(135deg, var(--text-dark) 0%, #1a2b3c 100%);
            color: #fff;
            padding: var(--spacing-xl) 0;
        }

        .data-section h2 {
            color: #fff;
        }

        .data-section .section-subtitle {
            color: #B0B8C4;
        }

        .data-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 32px;
        }

        .data-card {
            background: rgba(255,255,255,0.08);
            border: 1px solid rgba(255,255,255,0.12);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            text-align: center;
            transition: var(--transition);
        }

        .data-card:hover {
            background: rgba(255,255,255,0.14);
            transform: translateY(-2px);
        }

        .data-card .data-number {
            font-size: 40px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 8px;
            letter-spacing: -1px;
        }

        .data-card .data-label {
            font-size: 15px;
            color: #D0D5DD;
        }

        .data-card .data-desc {
            font-size: 13px;
            color: #98A2B3;
            margin-top: 8px;
        }

        /* Flow / process */
        .process-section {
            background: #fff;
        }

        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 32px;
            counter-reset: step;
        }

        .process-step {
            position: relative;
            padding: 28px 20px;
            background: var(--primary-bg);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            text-align: center;
            transition: var(--transition);
        }

        .process-step:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        .process-step .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            background: var(--primary);
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            border-radius: 50%;
            margin-bottom: 16px;
        }

        .process-step h3 {
            font-size: 18px;
            margin-bottom: 8px;
            color: var(--text-dark);
        }

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

        /* CTA section */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, #3b82f6 60%, #60a5fa 100%);
            padding: var(--spacing-xl) 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -20%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(255,255,255,0.12) 0%, transparent 70%);
            border-radius: 50%;
        }

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

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

        .cta-section p {
            color: #E0E7FF;
            font-size: 17px;
            max-width: 600px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }

        .cta-section .btn-white {
            font-size: 16px;
            padding: 14px 36px;
        }

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

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

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

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

        .faq-item details {
            width: 100%;
        }

        .faq-item summary {
            padding: 20px 24px;
            font-weight: 600;
            font-size: 16px;
            color: var(--text-dark);
            cursor: pointer;
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            user-select: none;
            transition: var(--transition);
        }

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

        .faq-item summary::after {
            content: '\f107';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 16px;
            color: var(--text-muted);
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }

        .faq-item details[open] summary::after {
            transform: rotate(180deg);
        }

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

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

        /* Related categories */
        .related-section {
            background: #fff;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 24px;
        }

        .related-card {
            display: block;
            background: var(--primary-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 24px;
            text-decoration: none;
            transition: var(--transition);
            text-align: center;
        }

        .related-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: var(--primary);
        }

        .related-card .related-icon {
            font-size: 28px;
            color: var(--primary);
            margin-bottom: 12px;
        }

        .related-card h3 {
            font-size: 17px;
            margin-bottom: 4px;
            color: var(--text-dark);
        }

        .related-card p {
            font-size: 13px;
            color: var(--text-muted);
            margin: 0;
        }

        /* Footer */
        .site-footer {
            background: var(--text-dark);
            color: #D0D5DD;
            padding: var(--spacing-xl) 0 0;
            font-size: 14px;
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: var(--spacing-lg);
        }

        .site-footer .footer-brand .footer-logo {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            text-decoration: none;
            display: block;
            margin-bottom: 12px;
        }

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

        .site-footer .footer-brand p {
            font-size: 14px;
            color: #98A2B3;
            line-height: 1.7;
            margin-bottom: 0;
            max-width: 320px;
        }

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

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

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

        .site-footer .footer-col ul li a {
            color: #98A2B3;
            text-decoration: none;
            font-size: 14px;
            transition: var(--transition);
        }

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

        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding: 20px 0;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 10px;
            text-align: center;
            font-size: 13px;
            color: #98A2B3;
        }

        .site-footer .footer-links {
            display: flex;
            gap: 12px;
            align-items: center;
            justify-content: center;
        }

        .site-footer .footer-links a {
            color: #98A2B3;
            text-decoration: none;
        }

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

        .site-footer .footer-links span {
            color: #4B5563;
        }

        .site-footer .beian {
            color: #98A2B3;
            font-size: 13px;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .page-hero-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

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

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

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

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

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

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

        @media (max-width: 768px) {
            section {
                padding: var(--spacing-lg) 0;
            }

            h1 { font-size: 28px; }
            h2 { font-size: 24px; }

            .site-header .container {
                height: 60px;
            }

            .nav-toggle {
                display: flex;
                align-items: center;
                justify-content: center;
            }

            .nav-menu {
                display: none;
                position: absolute;
                top: 60px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                align-items: stretch;
                padding: 16px 20px;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 20px 40px rgba(16,24,40,0.12);
                max-height: 70vh;
                overflow-y: auto;
            }

            .nav-menu.open {
                display: flex;
            }

            .nav-menu li a {
                padding: 14px 16px;
                font-size: 16px;
                border-radius: var(--radius-sm);
            }

            .top-info-bar .container {
                flex-direction: column;
                gap: 4px;
                text-align: center;
            }

            .top-info-bar .right-links {
                gap: 12px;
            }

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

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

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

            .hero-actions .btn {
                width: 100%;
            }

            .quick-stat-item {
                min-width: 50%;
                border-bottom: 1px solid var(--border);
                border-right: none;
            }

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

            .quick-stat-item:nth-last-child(-n+2) {
                border-bottom: none;
            }

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

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

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

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

            .site-footer .footer-bottom {
                flex-direction: column;
                gap: 8px;
            }

            .feature-item {
                flex-direction: column;
                gap: 12px;
                padding: 20px;
            }

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

            .faq-answer {
                padding: 0 18px 16px;
                font-size: 14px;
            }
        }

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

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

            .page-hero-content .hero-subtitle {
                font-size: 15px;
            }

            .quick-stat-item {
                min-width: 100%;
                border-right: none;
                border-bottom: 1px solid var(--border);
            }

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

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

            .cta-section p {
                font-size: 15px;
            }

            .btn {
                font-size: 14px;
                padding: 10px 20px;
            }

            .btn-lg {
                padding: 14px 28px;
                font-size: 15px;
            }

            .site-footer {
                font-size: 13px;
            }

            .logo-text {
                font-size: 17px;
            }

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

/* roulang page: category3 */
:root {
            --primary: #1A5CFF;
            --primary-dark: #0d47d4;
            --primary-light: #e8efff;
            --primary-bg: #F7F9FC;
            --accent: #00A88F;
            --text-dark: #101828;
            --text-body: #475467;
            --text-muted: #667085;
            --border: #E4E7EC;
            --card-bg: #FFFFFF;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(16, 24, 40, 0.06);
            --shadow-md: 0 8px 24px rgba(16, 24, 40, 0.12);
            --shadow-lg: 0 16px 48px rgba(16, 24, 40, 0.16);
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 72px;
            --transition: all 0.3s ease;
            --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-body);
            background-color: var(--primary-bg);
            overflow-x: hidden;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 3px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .container-wide {
            max-width: 1360px;
            margin: 0 auto;
            padding: 0 20px;
        }
        section {
            padding: var(--spacing-xl) 0;
        }
        .text-muted {
            color: var(--text-muted);
        }
        .text-dark {
            color: var(--text-dark);
        }
        .text-primary {
            color: var(--primary);
        }
        .text-accent {
            color: var(--accent);
        }
        .text-center {
            text-align: center;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            font-size: 15px;
            font-weight: 600;
            font-family: var(--font-stack);
            border-radius: var(--radius-sm);
            border: 1px solid transparent;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
            line-height: 1.4;
            text-decoration: none;
            white-space: nowrap;
        }
        .btn-primary {
            background-color: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .btn-primary:hover {
            background-color: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(26, 92, 255, 0.35);
        }
        .btn-secondary {
            background-color: transparent;
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-secondary:hover {
            background-color: var(--primary);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(26, 92, 255, 0.25);
        }
        .btn-white {
            background-color: #fff;
            color: var(--primary);
            border-color: #fff;
        }
        .btn-white:hover {
            background-color: var(--primary-light);
            color: var(--primary-dark);
            transform: translateY(-1px);
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
        }
        .btn-lg {
            padding: 16px 40px;
            font-size: 16px;
        }
        .btn-block {
            width: 100%;
        }
        .card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 24px;
            transition: var(--transition);
        }
        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 12px;
        }
        .tag-white {
            background: rgba(255, 255, 255, 0.2);
            color: #fff;
        }
        .tag-accent {
            background: #E6F7F4;
            color: var(--accent);
        }
        .divider {
            border: none;
            border-top: 1px solid var(--border);
            margin: 32px 0;
        }
        .badge {
            display: inline-block;
            background: var(--accent);
            color: #fff;
            padding: 2px 10px;
            border-radius: 12px;
            font-size: 12px;
            font-weight: 700;
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 680px;
            margin-bottom: 32px;
            line-height: 1.7;
        }
        .section-header {
            margin-bottom: 32px;
        }
        .section-header .tag {
            margin-bottom: 8px;
        }

        /* Top Info Bar */
        .top-info-bar {
            background-color: var(--primary-dark);
            color: rgba(255, 255, 255, 0.9);
            font-size: 13px;
            padding: 6px 0;
            min-height: 40px;
            display: flex;
            align-items: center;
        }
        .top-info-bar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
        }
        .top-info-bar a {
            color: rgba(255, 255, 255, 0.9);
            font-size: 13px;
            text-decoration: none;
            transition: var(--transition);
        }
        .top-info-bar a:hover {
            color: #fff;
            text-decoration: underline;
        }
        .top-info-left {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .top-info-right {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .top-info-right a {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        /* Site Header / Nav */
        .site-header {
            background-color: #fff;
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 12px rgba(16, 24, 40, 0.08);
        }
        .site-header .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 14px;
            padding-bottom: 14px;
            flex-wrap: wrap;
        }
        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 22px;
            font-weight: 700;
            color: var(--text-dark);
            text-decoration: none;
        }
        .brand-logo .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background-color: var(--primary);
            color: #fff;
            border-radius: 8px;
            font-size: 18px;
            font-weight: 700;
        }
        .brand-logo .logo-text {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-dark);
        }
        .brand-logo .logo-text span {
            color: var(--primary);
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            color: var(--text-dark);
            cursor: pointer;
            padding: 8px;
            border-radius: 4px;
            transition: var(--transition);
        }
        .nav-toggle:hover {
            color: var(--primary);
        }
        .nav-menu {
            list-style: none;
            display: flex;
            align-items: center;
            gap: 4px;
            margin: 0;
        }
        .nav-menu li {
            margin: 0;
        }
        .nav-menu a {
            display: block;
            padding: 10px 16px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-body);
            text-decoration: none;
            border-radius: 6px;
            transition: var(--transition);
            position: relative;
        }
        .nav-menu a::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 16px;
            right: 16px;
            height: 2px;
            background-color: var(--primary);
            transform: scaleX(0);
            transition: transform 0.25s ease;
            border-radius: 2px;
        }
        .nav-menu a:hover {
            color: var(--primary);
            background-color: var(--primary-light);
        }
        .nav-menu a:hover::after {
            transform: scaleX(1);
        }
        .nav-menu a.active {
            color: var(--primary);
            background-color: var(--primary-light);
            font-weight: 700;
        }
        .nav-menu a.active::after {
            transform: scaleX(1);
        }

        /* Hero */
        .hero-team-news {
            position: relative;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            min-height: 580px;
            display: flex;
            align-items: center;
            padding: var(--spacing-xl) 0;
        }
        .hero-team-news::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(16, 24, 40, 0.92) 0%, rgba(16, 24, 40, 0.75) 50%, rgba(26, 92, 255, 0.65) 100%);
        }
        .hero-team-news .container {
            position: relative;
            z-index: 2;
        }
        .hero-team-news h1 {
            font-size: 42px;
            font-weight: 700;
            color: #fff;
            line-height: 1.3;
            margin-bottom: 16px;
        }
        .hero-team-news .hero-subtitle {
            font-size: 19px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 620px;
            line-height: 1.7;
            margin-bottom: 28px;
        }
        .hero-team-news .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 32px;
        }
        .hero-team-news .btn-white {
            background-color: #fff;
            color: var(--primary);
            border: none;
            font-weight: 700;
            padding: 14px 32px;
            border-radius: var(--radius-sm);
            font-size: 15px;
        }
        .hero-team-news .btn-white:hover {
            background-color: var(--primary-light);
            color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(255, 255, 255, 0.25);
        }
        .hero-team-news .btn-outline-white {
            background-color: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.7);
            font-weight: 600;
            padding: 14px 32px;
            border-radius: var(--radius-sm);
            font-size: 15px;
        }
        .hero-team-news .btn-outline-white:hover {
            background-color: rgba(255, 255, 255, 0.15);
            border-color: #fff;
            color: #fff;
            transform: translateY(-2px);
        }

        /* Countdown */
        .countdown-wrap {
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.25);
            border-radius: var(--radius-md);
            padding: 18px 24px;
            display: inline-block;
            margin-bottom: 28px;
            backdrop-filter: blur(8px);
        }
        .countdown-label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.8);
            letter-spacing: 1px;
            text-transform: uppercase;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .countdown-label i {
            color: #ffcc00;
        }
        .countdown-digits {
            display: flex;
            gap: 16px;
            align-items: center;
        }
        .countdown-item {
            text-align: center;
        }
        .countdown-item .number {
            font-size: 36px;
            font-weight: 700;
            color: #fff;
            line-height: 1.2;
            font-variant-numeric: tabular-nums;
        }
        .countdown-item .unit {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.75);
        }
        .countdown-sep {
            font-size: 28px;
            color: rgba(255, 255, 255, 0.5);
            font-weight: 600;
            padding-bottom: 8px;
        }

        /* Subscribe form */
        .subscribe-form {
            display: flex;
            gap: 8px;
            max-width: 480px;
        }
        .subscribe-form input[type="email"] {
            flex: 1;
            padding: 14px 18px;
            font-size: 15px;
            font-family: var(--font-stack);
            border: 2px solid rgba(255, 255, 255, 0.35);
            border-radius: var(--radius-sm);
            background: rgba(255, 255, 255, 0.15);
            color: #fff;
            outline: none;
            transition: var(--transition);
        }
        .subscribe-form input[type="email"]::placeholder {
            color: rgba(255, 255, 255, 0.6);
        }
        .subscribe-form input[type="email"]:focus {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.22);
            box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.2);
        }

        /* Section headings */
        .section-title {
            font-size: 30px;
            font-weight: 700;
            color: var(--text-dark);
            line-height: 1.4;
            margin-bottom: 12px;
        }
        .section-title .highlight {
            color: var(--primary);
        }
        .section-desc {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 720px;
            margin-bottom: 32px;
        }

        /* Deep content */
        .deep-content {
            background-color: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 40px 44px;
            box-shadow: var(--shadow-sm);
        }
        .deep-content h3 {
            font-size: 21px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 16px;
            margin-top: 28px;
        }
        .deep-content h3:first-child {
            margin-top: 0;
        }
        .deep-content p {
            font-size: 16px;
            line-height: 1.9;
            color: var(--text-body);
            margin-bottom: 16px;
        }
        .deep-content strong {
            color: var(--primary);
            font-weight: 600;
        }

        /* Info list */
        .info-list-horizontal {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .info-list-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            display: flex;
            align-items: center;
            gap: 20px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            flex-wrap: wrap;
        }
        .info-list-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .info-list-item .item-index {
            width: 44px;
            height: 44px;
            min-width: 44px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 18px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .info-list-item .item-content {
            flex: 1;
            min-width: 200px;
        }
        .info-list-item .item-content h4 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 4px;
        }
        .info-list-item .item-content p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            margin: 0;
        }
        .info-list-item .item-tag {
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 12px;
            background: #E6F7F4;
            color: var(--accent);
            white-space: nowrap;
        }
        .info-list-item .item-state {
            font-size: 13px;
            color: var(--text-muted);
            white-space: nowrap;
        }
        .info-list-item .item-arrow {
            color: var(--primary);
            font-size: 18px;
            transition: var(--transition);
        }
        .info-list-item:hover .item-arrow {
            transform: translateX(4px);
        }

        /* Data section */
        .data-strip {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .data-block {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 28px 20px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }
        .data-block:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .data-block .data-number {
            font-size: 38px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 8px;
        }
        .data-block .data-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 4px;
        }
        .data-block .data-desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.5;
        }

        /* Team Cards */
        .team-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        .team-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }
        .team-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .team-card .team-cover {
            height: 180px;
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .team-card .team-cover .tag {
            position: absolute;
            top: 12px;
            left: 12px;
            margin-bottom: 0;
            background: rgba(255, 255, 255, 0.9);
            color: var(--text-dark);
        }
        .team-card .team-body {
            padding: 20px 24px;
        }
        .team-card .team-body h4 {
            font-size: 19px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 8px;
        }
        .team-card .team-body p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 12px;
        }
        .team-card .team-meta {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            font-size: 13px;
            color: var(--text-muted);
            border-top: 1px solid var(--border);
            padding-top: 12px;
            margin-top: 8px;
        }
        .team-card .team-meta i {
            color: var(--primary);
            margin-right: 4px;
        }

        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: var(--radius-lg);
            padding: 56px 40px;
            text-align: center;
            color: #fff;
            box-shadow: var(--shadow-lg);
        }
        .cta-section h2 {
            font-size: 32px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-section p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 560px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }
        .cta-section .btn-white {
            background-color: #fff;
            color: var(--primary);
            border: none;
            font-weight: 700;
            padding: 16px 40px;
            border-radius: var(--radius-sm);
            font-size: 16px;
        }
        .cta-section .btn-white:hover {
            background-color: var(--primary-light);
            color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-list details {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            overflow: hidden;
        }
        .faq-list details:hover {
            box-shadow: var(--shadow-md);
        }
        .faq-list summary {
            padding: 18px 24px;
            font-size: 16px;
            font-weight: 700;
            color: var(--text-dark);
            cursor: pointer;
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            transition: var(--transition);
        }
        .faq-list summary::-webkit-details-marker {
            display: none;
        }
        .faq-list summary .faq-icon {
            font-size: 16px;
            color: var(--primary);
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }
        .faq-list details[open] summary .faq-icon {
            transform: rotate(180deg);
        }
        .faq-list summary:hover {
            color: var(--primary);
            background-color: var(--primary-light);
        }
        .faq-list .faq-answer {
            padding: 0 24px 20px;
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-body);
        }

        /* Footer */
        .site-footer {
            background-color: #1a1f2e;
            color: rgba(255, 255, 255, 0.75);
            padding: 48px 0 0;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .footer-logo {
            font-size: 24px;
            font-weight: 700;
            color: #fff;
            text-decoration: none;
        }
        .footer-logo span {
            color: var(--primary);
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.65);
            margin-top: 12px;
            margin-bottom: 0;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-col ul a:hover {
            color: #fff;
            text-decoration: underline;
        }
        .footer-bottom {
            padding: 20px 0;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
        }
        .footer-links {
            display: flex;
            gap: 8px;
            align-items: center;
        }
        .footer-links a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 13px;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: #fff;
        }
        .footer-links span {
            color: rgba(255, 255, 255, 0.35);
        }
        .beian {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .data-strip {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .team-grid {
                grid-template-columns: 1fr;
            }
            .hero-team-news h1 {
                font-size: 34px;
            }
            .hero-team-news {
                min-height: 480px;
            }
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .nav-menu {
                display: none;
                flex-direction: column;
                width: 100%;
                padding: 12px 0;
                gap: 2px;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu a {
                padding: 14px 12px;
                font-size: 16px;
                width: 100%;
                text-align: left;
            }
            .nav-menu a::after {
                display: none;
            }
            .site-header .container {
                padding-top: 8px;
                padding-bottom: 8px;
            }
            .brand-logo .logo-text {
                font-size: 19px;
            }
            .hero-team-news h1 {
                font-size: 28px;
            }
            .hero-team-news .hero-subtitle {
                font-size: 16px;
            }
            .hero-team-news {
                min-height: 420px;
                padding: 40px 0;
            }
            .countdown-digits {
                gap: 8px;
                flex-wrap: wrap;
            }
            .countdown-item .number {
                font-size: 26px;
            }
            .countdown-sep {
                font-size: 20px;
                padding-bottom: 16px;
            }
            .subscribe-form {
                flex-direction: column;
            }
            .subscribe-form input[type="email"] {
                width: 100%;
            }
            .btn {
                white-space: normal;
            }
            .hero-team-news .hero-actions {
                flex-direction: column;
                width: 100%;
            }
            .hero-team-news .btn-white,
            .hero-team-news .btn-outline-white {
                width: 100%;
                justify-content: center;
            }
            section {
                padding: 40px 0;
            }
            .section-title {
                font-size: 24px;
            }
            .deep-content {
                padding: 24px 20px;
            }
            .info-list-item {
                padding: 16px 18px;
                gap: 12px;
            }
            .info-list-item .item-index {
                width: 36px;
                height: 36px;
                min-width: 36px;
                font-size: 15px;
            }
            .data-strip {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .data-block .data-number {
                font-size: 28px;
            }
            .cta-section {
                padding: 32px 20px;
            }
            .cta-section h2 {
                font-size: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .top-info-bar .container {
                flex-direction: column;
                align-items: flex-start;
            }
            .top-info-right {
                flex-wrap: wrap;
                gap: 8px;
            }
        }
        @media (max-width: 520px) {
            .data-strip {
                grid-template-columns: 1fr;
            }
            .hero-team-news h1 {
                font-size: 24px;
            }
            .countdown-item .number {
                font-size: 20px;
            }
            .section-title {
                font-size: 21px;
            }
            .btn {
                padding: 10px 20px;
                font-size: 14px;
            }
        }

/* roulang page: category4 */
:root {
            --primary: #1A5CFF;
            --primary-dark: #0d47d4;
            --primary-light: #e8efff;
            --primary-bg: #F7F9FC;
            --accent: #00A88F;
            --text-dark: #101828;
            --text-body: #475467;
            --text-muted: #667085;
            --border: #E4E7EC;
            --card-bg: #FFFFFF;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(16, 24, 40, 0.06);
            --shadow-md: 0 8px 24px rgba(16, 24, 40, 0.12);
            --shadow-lg: 0 16px 48px rgba(16, 24, 40, 0.16);
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 72px;
            --transition: all 0.3s ease;
            --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-body);
            background-color: var(--primary-bg);
            overflow-x: hidden;
            margin: 0;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible {
            outline: 3px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .container-wide {
            max-width: 1360px;
            margin: 0 auto;
            padding: 0 20px;
        }
        section {
            padding: var(--spacing-xl) 0;
        }
        .section-sm {
            padding: var(--spacing-lg) 0;
        }
        .text-muted {
            color: var(--text-muted);
        }
        .text-dark {
            color: var(--text-dark);
        }
        .text-primary {
            color: var(--primary);
        }
        .text-accent {
            color: var(--accent);
        }
        .text-center {
            text-align: center;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            font-size: 15px;
            font-weight: 600;
            font-family: var(--font-stack);
            border-radius: var(--radius-sm);
            border: 1px solid transparent;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
            line-height: 1.4;
            text-decoration: none;
            white-space: nowrap;
        }
        .btn-primary {
            background-color: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .btn-primary:hover {
            background-color: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(26, 92, 255, 0.35);
        }
        .btn-secondary {
            background-color: transparent;
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-secondary:hover {
            background-color: var(--primary);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(26, 92, 255, 0.25);
        }
        .btn-white {
            background-color: #fff;
            color: var(--primary);
            border-color: #fff;
        }
        .btn-white:hover {
            background-color: var(--primary-light);
            color: var(--primary-dark);
            transform: translateY(-1px);
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
        }
        .btn-lg {
            padding: 16px 40px;
            font-size: 16px;
        }
        .btn-block {
            width: 100%;
        }
        .card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 24px;
            transition: var(--transition);
        }
        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 12px;
        }
        .tag-white {
            background: rgba(255, 255, 255, 0.2);
            color: #fff;
        }
        .tag-accent {
            background: #E6F7F4;
            color: var(--accent);
        }
        .divider {
            border: none;
            border-top: 1px solid var(--border);
            margin: 32px 0;
        }
        .badge {
            display: inline-block;
            background: var(--accent);
            color: #fff;
            padding: 2px 10px;
            border-radius: 12px;
            font-size: 12px;
            font-weight: 700;
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 680px;
            margin-bottom: 32px;
            line-height: 1.7;
        }
        .section-header {
            margin-bottom: 32px;
        }
        .section-header .tag {
            margin-bottom: 8px;
        }
        /* Top Info Bar */
        .top-info-bar {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.85);
            padding: 6px 0;
            font-size: 13px;
            line-height: 1.6;
        }
        .top-info-bar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .top-info-bar a {
            color: #fff;
            font-weight: 600;
            white-space: nowrap;
        }
        .top-info-bar a:hover {
            color: rgba(255, 255, 255, 0.7);
        }
        .top-info-bar .info-left {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .top-info-bar .info-right {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        /* Site Header */
        .site-header {
            background: #fff;
            border-bottom: 1px solid var(--border);
            box-shadow: 0 2px 8px rgba(16, 24, 40, 0.04);
            position: sticky;
            top: 0;
            z-index: 100;
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: var(--text-dark);
            letter-spacing: 0.5px;
            text-decoration: none;
        }
        .brand-logo:hover {
            color: var(--text-dark);
        }
        .logo-icon {
            width: 40px;
            height: 40px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .logo-text {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-dark);
        }
        .logo-text span {
            color: var(--primary);
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            font-size: 20px;
            color: var(--text-dark);
            cursor: pointer;
            padding: 8px 12px;
            transition: var(--transition);
        }
        .nav-toggle:hover {
            background: var(--primary-light);
            color: var(--primary);
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-menu li a {
            display: block;
            padding: 8px 16px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-body);
            border-radius: var(--radius-sm);
            transition: var(--transition);
            text-decoration: none;
        }
        .nav-menu li a:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .nav-menu li a.active {
            color: var(--primary);
            background: var(--primary-light);
        }
        /* Hero */
        .hero-live {
            background: linear-gradient(180deg, #EDF3FF 0%, var(--primary-bg) 100%);
            padding: var(--spacing-xl) 0 var(--spacing-lg);
            position: relative;
            overflow: hidden;
        }
        .hero-live::before {
            content: "";
            position: absolute;
            top: -120px;
            right: -80px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(26, 92, 255, 0.12) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-live::after {
            content: "";
            position: absolute;
            bottom: -100px;
            left: -60px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(0, 168, 143, 0.1) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-live .container {
            position: relative;
            z-index: 1;
        }
        .hero-live-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .hero-live-content h1 {
            font-size: 38px;
            font-weight: 700;
            color: var(--text-dark);
            line-height: 1.3;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .hero-live-content h1 span {
            color: var(--primary);
        }
        .hero-live-content .hero-sub {
            font-size: 18px;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 24px;
            max-width: 520px;
        }
        .hero-live-content .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 28px;
        }
        .hero-live-content .hero-meta span {
            font-size: 14px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .hero-live-content .hero-meta i {
            color: var(--primary);
        }
        .hero-live-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .hero-live-visual {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .hero-live-visual img {
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            width: 100%;
            max-width: 540px;
            aspect-ratio: 16/10;
            object-fit: cover;
        }
        /* Plan Comparison Hero */
        .plan-compare-section {
            padding: 0 0 var(--spacing-xl);
        }
        .plan-compare-section .container {
            position: relative;
        }
        .plan-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 8px;
        }
        .plan-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            transition: var(--transition);
            position: relative;
            display: flex;
            flex-direction: column;
        }
        .plan-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .plan-card.highlight {
            border: 2px solid var(--primary);
            box-shadow: 0 8px 32px rgba(26, 92, 255, 0.15);
            transform: scale(1.03);
            z-index: 2;
        }
        .plan-card.highlight:hover {
            transform: scale(1.03) translateY(-2px);
            box-shadow: 0 12px 40px rgba(26, 92, 255, 0.2);
        }
        .plan-card .plan-badge-top {
            position: absolute;
            top: -12px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--primary);
            color: #fff;
            padding: 4px 16px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 700;
            white-space: nowrap;
        }
        .plan-card h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 8px;
        }
        .plan-card .plan-desc {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 16px;
        }
        .plan-card .plan-features {
            list-style: none;
            padding: 0;
            margin: 0 0 20px;
            flex: 1;
        }
        .plan-card .plan-features li {
            padding: 6px 0;
            font-size: 14px;
            color: var(--text-body);
            display: flex;
            align-items: flex-start;
            gap: 8px;
            line-height: 1.6;
        }
        .plan-card .plan-features li i {
            color: var(--accent);
            margin-top: 4px;
            flex-shrink: 0;
        }
        .plan-card .btn {
            width: 100%;
        }
        /* Section Title */
        .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 12px;
            line-height: 1.35;
        }
        .section-title-sm {
            font-size: 22px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 8px;
        }
        /* Deep Content */
        .deep-content {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
        }
        .deep-content h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 16px;
        }
        .deep-content h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-dark);
            margin: 24px 0 12px;
        }
        .deep-content p {
            font-size: 16px;
            line-height: 1.9;
            color: var(--text-body);
            margin-bottom: 16px;
        }
        /* Info List */
        .info-list-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
        .info-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 28px;
            display: flex;
            gap: 20px;
            align-items: flex-start;
            transition: var(--transition);
        }
        .info-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .info-item-icon {
            width: 52px;
            height: 52px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            flex-shrink: 0;
        }
        .info-item-content h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 6px;
        }
        .info-item-content p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0;
        }
        /* Stats */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .stat-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 24px;
            text-align: center;
            transition: var(--transition);
        }
        .stat-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .stat-number {
            font-size: 32px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .stat-label {
            font-size: 14px;
            color: var(--text-muted);
            font-weight: 500;
        }
        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: var(--radius-lg);
            padding: 56px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: "";
            position: absolute;
            top: -50%;
            right: -20%;
            width: 350px;
            height: 350px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-section::after {
            content: "";
            position: absolute;
            bottom: -40%;
            left: -15%;
            width: 300px;
            height: 300px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: 30px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-section p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 600px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }
        /* FAQ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }
        .faq-item summary {
            padding: 18px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-dark);
            cursor: pointer;
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            transition: var(--transition);
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary .faq-icon {
            flex-shrink: 0;
            color: var(--primary);
            font-size: 14px;
            transition: var(--transition);
        }
        .faq-item[open] summary .faq-icon {
            transform: rotate(180deg);
        }
        .faq-item .faq-answer {
            padding: 0 24px 20px;
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.8;
        }
        /* Footer */
        .site-footer {
            background: #0D1B3E;
            color: rgba(255, 255, 255, 0.7);
            padding: 56px 0 0;
            margin-top: var(--spacing-xl);
        }
        .site-footer a {
            color: rgba(255, 255, 255, 0.7);
            text-decoration: none;
            transition: var(--transition);
        }
        .site-footer a:hover {
            color: #fff;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
        }
        .footer-logo {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            text-decoration: none;
            display: inline-block;
            margin-bottom: 16px;
        }
        .footer-logo span {
            color: var(--primary);
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            max-width: 320px;
            margin: 0;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            font-size: 14px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 20px 0;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 13px;
        }
        .footer-links {
            display: flex;
            gap: 8px;
            align-items: center;
        }
        .footer-links span {
            color: rgba(255, 255, 255, 0.3);
        }
        .beian {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }
        /* Mobile Nav */
        @media (max-width: 1024px) {
            .hero-live-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .hero-live-content h1 {
                font-size: 32px;
            }
            .plan-grid {
                grid-template-columns: 1fr 1fr;
            }
            .plan-card.highlight {
                transform: scale(1);
            }
            .plan-card.highlight:hover {
                transform: translateY(-2px);
            }
            .info-list-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .nav-menu {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: #fff;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-md);
                flex-direction: column;
                gap: 0;
                padding: 12px 20px;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu li {
                width: 100%;
            }
            .nav-menu li a {
                padding: 12px 16px;
                font-size: 16px;
                display: block;
                width: 100%;
            }
            .nav-toggle {
                display: block;
            }
        }
        @media (max-width: 768px) {
            section {
                padding: var(--spacing-lg) 0;
            }
            .hero-live {
                padding: var(--spacing-lg) 0 var(--spacing-md);
            }
            .hero-live-content h1 {
                font-size: 26px;
            }
            .hero-live-content .hero-sub {
                font-size: 16px;
            }
            .hero-live-visual img {
                max-width: 100%;
                aspect-ratio: 16/9;
            }
            .plan-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .plan-card.highlight {
                border-width: 2px;
            }
            .deep-content {
                padding: 28px 20px;
            }
            .deep-content h2 {
                font-size: 20px;
            }
            .info-item {
                flex-direction: column;
                padding: 20px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-number {
                font-size: 24px;
            }
            .cta-section {
                padding: 40px 24px;
            }
            .cta-section h2 {
                font-size: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
                padding-bottom: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .top-info-bar .container {
                flex-direction: column;
                gap: 4px;
                text-align: center;
            }
            .top-info-bar .info-right {
                gap: 8px;
                flex-wrap: wrap;
                justify-content: center;
            }
            .btn {
                padding: 10px 20px;
                font-size: 14px;
            }
            .faq-item summary {
                padding: 14px 18px;
                font-size: 15px;
            }
            .faq-item .faq-answer {
                padding: 0 18px 16px;
                font-size: 14px;
            }
        }
        @media (max-width: 520px) {
            .hero-live-content h1 {
                font-size: 22px;
            }
            .hero-live-content .hero-sub {
                font-size: 15px;
            }
            .hero-live-content .hero-meta {
                gap: 8px;
                flex-direction: column;
            }
            .hero-live-actions {
                flex-direction: column;
            }
            .hero-live-actions .btn {
                width: 100%;
            }
            .section-title {
                font-size: 22px;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .plan-card {
                padding: 20px 16px;
            }
            .container {
                padding: 0 16px;
            }
            .container-wide {
                padding: 0 16px;
            }
        }

/* roulang page: category6 */
:root {
            --primary: #1A5CFF;
            --primary-dark: #0d47d4;
            --primary-light: #e8efff;
            --primary-bg: #F7F9FC;
            --accent: #00A88F;
            --text-dark: #101828;
            --text-body: #475467;
            --text-muted: #667085;
            --border: #E4E7EC;
            --card-bg: #FFFFFF;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(16, 24, 40, 0.06);
            --shadow-md: 0 8px 24px rgba(16, 24, 40, 0.12);
            --shadow-lg: 0 16px 48px rgba(16, 24, 40, 0.16);
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 72px;
            --transition: all 0.3s ease;
            --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-body);
            background-color: var(--primary-bg);
            overflow-x: hidden;
            margin: 0;
        }

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

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

        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 3px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

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

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

        .container-wide {
            max-width: 1360px;
            margin: 0 auto;
            padding: 0 20px;
        }

        section {
            padding: var(--spacing-xl) 0;
        }

        .section-sm {
            padding: var(--spacing-lg) 0;
        }

        .text-muted {
            color: var(--text-muted);
        }

        .text-dark {
            color: var(--text-dark);
        }

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

        .text-accent {
            color: var(--accent);
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            font-size: 15px;
            font-weight: 600;
            font-family: var(--font-stack);
            border-radius: var(--radius-sm);
            border: 1px solid transparent;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
            line-height: 1.4;
            text-decoration: none;
            white-space: nowrap;
        }

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

        .btn-primary:hover {
            background-color: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(26, 92, 255, 0.35);
        }

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

        .btn-secondary:hover {
            background-color: var(--primary);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(26, 92, 255, 0.25);
        }

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

        .btn-white:hover {
            background-color: var(--primary-light);
            color: var(--primary-dark);
            transform: translateY(-1px);
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
        }

        .btn-lg {
            padding: 16px 40px;
            font-size: 16px;
        }

        .btn-block {
            width: 100%;
        }

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

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

        .tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 12px;
        }

        .tag-white {
            background: rgba(255, 255, 255, 0.2);
            color: #fff;
        }

        .tag-accent {
            background: #E6F7F4;
            color: var(--accent);
        }

        .divider {
            border: none;
            border-top: 1px solid var(--border);
            margin: 32px 0;
        }

        .badge {
            display: inline-block;
            background: var(--accent);
            color: #fff;
            padding: 2px 10px;
            border-radius: 12px;
            font-size: 12px;
            font-weight: 700;
        }

        .section-header {
            margin-bottom: 40px;
        }

        .section-header .tag {
            margin-bottom: 10px;
        }

        .section-header h2 {
            margin: 0 0 12px;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 720px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }

        /* Header */
        .top-info-bar {
            background-color: #0d2f88;
            color: #fff;
            font-size: 13px;
            padding: 8px 0;
            line-height: 1.5;
        }

        .top-info-bar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
        }

        .top-info-bar a {
            color: #fff;
            font-weight: 500;
            margin-left: 16px;
        }

        .top-info-bar a:hover {
            color: #d6e4ff;
        }

        .site-header {
            background-color: #fff;
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 8px rgba(16, 24, 40, 0.04);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            min-height: 68px;
        }

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

        .brand-logo .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--primary), #6f9bff);
            color: #fff;
            border-radius: 10px;
            font-size: 19px;
            font-weight: 800;
        }

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

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

        .nav-menu {
            display: flex;
            align-items: center;
            list-style: none;
            margin: 0;
            padding: 0;
            gap: 4px;
            flex-wrap: wrap;
        }

        .nav-menu li a {
            display: inline-block;
            padding: 8px 16px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-body);
            border-radius: var(--radius-sm);
            transition: var(--transition);
            position: relative;
        }

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

        .nav-menu li a.active {
            color: var(--primary);
            background-color: var(--primary-light);
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            color: var(--text-dark);
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
        }

        /* Hero */
        .training-hero {
            background: linear-gradient(140deg, #f0f5ff 0%, #ffffff 45%, #e8efff 100%);
            position: relative;
            overflow: hidden;
            padding: 72px 0 80px;
        }

        .training-hero::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -80px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(26, 92, 255, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

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

        .training-hero .hero-content h1 {
            font-size: 38px;
            font-weight: 700;
            color: var(--text-dark);
            line-height: 1.3;
            margin-bottom: 16px;
        }

        .training-hero .hero-content h1 span {
            color: var(--primary);
        }

        .training-hero .hero-content .hero-desc {
            font-size: 18px;
            color: var(--text-body);
            line-height: 1.8;
            margin-bottom: 24px;
            max-width: 540px;
        }

        .hero-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 28px;
        }

        .hero-badges .hero-badge-item {
            display: flex;
            align-items: center;
            gap: 8px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 30px;
            padding: 8px 18px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-dark);
            box-shadow: var(--shadow-sm);
        }

        .hero-badges .hero-badge-item i {
            color: var(--primary);
            font-size: 16px;
        }

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

        .hero-visual {
            position: relative;
            display: flex;
            justify-content: center;
        }

        .hero-visual img {
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            max-width: 100%;
            object-fit: cover;
            aspect-ratio: 4/3;
            width: 100%;
        }

        .hero-visual .hero-qualify {
            position: absolute;
            bottom: -20px;
            left: 24px;
            right: 24px;
            background: #fff;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-md);
            padding: 16px 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            border: 1px solid var(--border);
        }

        .hero-qualify .qualify-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-dark);
        }

        .hero-qualify .qualify-desc {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* Deep content */
        .deep-content {
            background-color: #fff;
            padding: 72px 0;
        }

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

        .deep-content h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 24px;
            line-height: 1.4;
        }

        .deep-content h3 {
            font-size: 21px;
            font-weight: 600;
            color: var(--text-dark);
            margin: 32px 0 12px;
        }

        .deep-content p {
            font-size: 16px;
            line-height: 1.9;
            color: var(--text-body);
            margin-bottom: 16px;
        }

        .deep-content ul,
        .deep-content ol {
            padding-left: 24px;
            margin-bottom: 16px;
        }

        .deep-content li {
            margin-bottom: 8px;
            line-height: 1.8;
        }

        /* Steps */
        .steps-section {
            background-color: var(--primary-bg);
        }

        .steps-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
            max-width: 900px;
            margin: 0 auto;
        }

        .step-item {
            display: grid;
            grid-template-columns: 64px 1fr;
            gap: 20px;
            align-items: flex-start;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

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

        .step-number {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 56px;
            height: 56px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 24px;
            font-weight: 800;
            border-radius: 50%;
            flex-shrink: 0;
        }

        .step-info h3 {
            font-size: 19px;
            font-weight: 600;
            color: var(--text-dark);
            margin: 0 0 8px;
        }

        .step-info p {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.7;
            margin: 0;
        }

        /* Coaches */
        .coaches-section {
            background-color: #fff;
        }

        .coach-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }

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

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

        .coach-card img {
            width: 100%;
            height: 220px;
            object-fit: cover;
            aspect-ratio: 16/9;
        }

        .coach-card .coach-body {
            padding: 20px 24px 24px;
        }

        .coach-card .coach-name {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 4px;
        }

        .coach-card .coach-role {
            font-size: 14px;
            color: var(--primary);
            font-weight: 600;
            margin-bottom: 8px;
        }

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

        /* Stats */
        .stats-section {
            background: linear-gradient(135deg, #0d2f88 0%, #1A5CFF 100%);
            color: #fff;
            padding: 64px 0;
        }

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

        .stat-item .stat-number {
            font-size: 36px;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 8px;
            letter-spacing: 1px;
        }

        .stat-item .stat-label {
            font-size: 15px;
            font-weight: 500;
            opacity: 0.9;
        }

        .stat-item .stat-desc {
            font-size: 13px;
            opacity: 0.7;
            margin-top: 4px;
        }

        /* CTA */
        .cta-section {
            background: linear-gradient(140deg, #e8efff 0%, #f7f9fc 60%, #ffffff 100%);
            padding: 80px 0;
        }

        .cta-box {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            padding: 48px 40px;
            text-align: center;
            max-width: 760px;
            margin: 0 auto;
        }

        .cta-box h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 12px;
        }

        .cta-box p {
            font-size: 16px;
            color: var(--text-muted);
            margin-bottom: 28px;
            line-height: 1.7;
        }

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

        .faq-list {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

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

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

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

        .faq-item summary::after {
            content: '\f107';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            color: var(--primary);
            transition: var(--transition);
            flex-shrink: 0;
        }

        .faq-item[open] summary::after {
            transform: rotate(180deg);
        }

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

        /* Footer */
        .site-footer {
            background-color: #0d1e3f;
            color: #c7d2e8;
            padding: 64px 0 32px;
            font-size: 14px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand .footer-logo {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            letter-spacing: 1px;
            margin-bottom: 16px;
            display: inline-block;
        }

        .footer-brand .footer-logo span {
            color: #6f9bff;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: #c7d2e8;
            margin: 0;
        }

        .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }

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

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

        .footer-col ul li a {
            color: #c7d2e8;
            font-size: 14px;
            transition: var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: #a0b4d9;
        }

        .footer-links {
            display: flex;
            gap: 16px;
            align-items: center;
        }

        .footer-links a {
            color: #a0b4d9;
        }

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

        .beian {
            color: #a0b4d9;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .training-hero .hero-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }

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

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

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

        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }

            .nav-menu {
                display: none;
                flex-direction: column;
                width: 100%;
                padding: 12px 0;
                gap: 0;
                background-color: #fff;
                border-radius: 0 0 var(--radius-md) var(--radius-md);
            }

            .nav-menu.open {
                display: flex;
            }

            .nav-menu li {
                width: 100%;
            }

            .nav-menu li a {
                display: block;
                padding: 14px 16px;
                width: 100%;
                border-radius: 0;
                border-bottom: 1px solid var(--border);
            }

            .nav-menu li:last-child a {
                border-bottom: none;
            }

            .site-header .container {
                flex-wrap: wrap;
                padding: 12px 20px;
            }

            section {
                padding: var(--spacing-lg) 0;
            }

            .training-hero {
                padding: 48px 0 64px;
            }

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

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

            .hero-badges {
                gap: 8px;
            }

            .hero-badges .hero-badge-item {
                font-size: 12px;
                padding: 6px 14px;
            }

            .hero-actions .btn {
                width: 100%;
            }

            .hero-visual .hero-qualify {
                position: static;
                margin-top: 16px;
            }

            .deep-content {
                padding: 48px 0;
            }

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

            .step-item {
                grid-template-columns: 1fr;
                gap: 12px;
                text-align: center;
            }

            .step-number {
                margin: 0 auto;
            }

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

            .stat-item .stat-number {
                font-size: 30px;
            }

            .cta-box {
                padding: 32px 20px;
            }

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

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

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

            .footer-links {
                justify-content: center;
                flex-wrap: wrap;
            }
        }

        @media (max-width: 520px) {
            .top-info-bar .container {
                flex-direction: column;
                text-align: center;
            }

            .top-info-bar a {
                margin-left: 8px;
            }

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

            .brand-logo .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 16px;
            }

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

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

            .coach-card img {
                height: 180px;
            }

            .btn-lg {
                padding: 14px 28px;
                font-size: 15px;
            }
        }

/* roulang page: category5 */
:root {
        --primary: #1A5CFF;
        --primary-dark: #0d47d4;
        --primary-light: #e8efff;
        --primary-bg: #F7F9FC;
        --accent: #00A88F;
        --text-dark: #101828;
        --text-body: #475467;
        --text-muted: #667085;
        --border: #E4E7EC;
        --card-bg: #FFFFFF;
        --radius-sm: 8px;
        --radius-md: 12px;
        --radius-lg: 20px;
        --shadow-sm: 0 2px 8px rgba(16, 24, 40, 0.06);
        --shadow-md: 0 8px 24px rgba(16, 24, 40, 0.12);
        --shadow-lg: 0 16px 48px rgba(16, 24, 40, 0.16);
        --spacing-xs: 8px;
        --spacing-sm: 16px;
        --spacing-md: 24px;
        --spacing-lg: 40px;
        --spacing-xl: 72px;
        --transition: all 0.3s ease;
        --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }

    html {
        scroll-behavior: smooth;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }

    body {
        font-family: var(--font-stack);
        font-size: 16px;
        line-height: 1.8;
        color: var(--text-body);
        background-color: var(--primary-bg);
        overflow-x: hidden;
        margin: 0;
        padding: 0;
    }

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

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

    a:focus-visible,
    button:focus-visible,
    input:focus-visible {
        outline: 3px solid var(--primary);
        outline-offset: 2px;
        border-radius: 4px;
    }

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

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

    .container-wide {
        max-width: 1360px;
        margin: 0 auto;
        padding: 0 20px;
    }

    section {
        padding: var(--spacing-xl) 0;
    }

    .text-muted {
        color: var(--text-muted);
    }
    .text-dark {
        color: var(--text-dark);
    }
    .text-primary {
        color: var(--primary);
    }
    .text-accent {
        color: var(--accent);
    }
    .text-center {
        text-align: center;
    }

    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        padding: 12px 28px;
        font-size: 15px;
        font-weight: 600;
        font-family: var(--font-stack);
        border-radius: var(--radius-sm);
        border: 1px solid transparent;
        cursor: pointer;
        transition: var(--transition);
        text-align: center;
        line-height: 1.4;
        text-decoration: none;
        white-space: nowrap;
    }

    .btn-primary {
        background-color: var(--primary);
        color: #fff;
        border-color: var(--primary);
    }
    .btn-primary:hover {
        background-color: var(--primary-dark);
        border-color: var(--primary-dark);
        color: #fff;
        transform: translateY(-1px);
        box-shadow: 0 4px 16px rgba(26, 92, 255, 0.35);
    }

    .btn-secondary {
        background-color: transparent;
        color: var(--primary);
        border-color: var(--primary);
    }
    .btn-secondary:hover {
        background-color: var(--primary);
        color: #fff;
        transform: translateY(-1px);
        box-shadow: 0 4px 16px rgba(26, 92, 255, 0.25);
    }

    .btn-white {
        background-color: #fff;
        color: var(--primary);
        border-color: #fff;
    }
    .btn-white:hover {
        background-color: var(--primary-light);
        color: var(--primary-dark);
        transform: translateY(-1px);
    }

    .btn-sm {
        padding: 8px 16px;
        font-size: 13px;
    }
    .btn-lg {
        padding: 16px 40px;
        font-size: 16px;
    }
    .btn-block {
        width: 100%;
    }

    .card {
        background: var(--card-bg);
        border: 1px solid var(--border);
        border-radius: var(--radius-md);
        box-shadow: var(--shadow-sm);
        padding: 24px;
        transition: var(--transition);
    }
    .card:hover {
        box-shadow: var(--shadow-md);
        transform: translateY(-2px);
    }

    .tag {
        display: inline-block;
        background: var(--primary-light);
        color: var(--primary);
        padding: 4px 14px;
        border-radius: 20px;
        font-size: 13px;
        font-weight: 600;
        letter-spacing: 0.5px;
        margin-bottom: 12px;
    }
    .tag-white {
        background: rgba(255, 255, 255, 0.2);
        color: #fff;
    }
    .tag-accent {
        background: #E6F7F4;
        color: var(--accent);
    }

    .divider {
        border: none;
        border-top: 1px solid var(--border);
        margin: 32px 0;
    }

    .badge {
        display: inline-block;
        background: var(--accent);
        color: #fff;
        padding: 2px 10px;
        border-radius: 12px;
        font-size: 12px;
        font-weight: 700;
    }

    .section-subtitle {
        font-size: 16px;
        color: var(--text-muted);
        max-width: 680px;
        margin-bottom: 32px;
        line-height: 1.7;
    }
    .section-header {
        margin-bottom: 32px;
    }
    .section-header .tag {
        margin-bottom: 8px;
    }

    /* ========== 顶部信息条 ========== */
    .top-info-bar {
        background-color: var(--primary-dark);
        color: rgba(255, 255, 255, 0.9);
        font-size: 12.5px;
        padding: 8px 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .top-info-bar .container {
        display: flex;
        justify-content: space-between;
        align-items: center;
        gap: 16px;
        flex-wrap: wrap;
    }
    .top-info-bar a {
        color: #fff;
        font-weight: 600;
        text-decoration: none;
    }
    .top-info-bar a:hover {
        color: var(--primary-light);
    }
    .top-info-left {
        display: flex;
        align-items: center;
        gap: 8px;
    }
    .top-info-left i {
        font-size: 12px;
    }
    .top-info-right {
        display: flex;
        align-items: center;
        gap: 18px;
    }
    .top-info-right a {
        color: rgba(255, 255, 255, 0.85);
        font-weight: 500;
        font-size: 12px;
    }
    .top-info-right a:hover {
        color: #fff;
    }

    /* ========== 主导航 ========== */
    .site-header {
        background-color: #fff;
        border-bottom: 1px solid var(--border);
        padding: 14px 0;
        position: sticky;
        top: 0;
        z-index: 100;
        box-shadow: 0 2px 12px rgba(16, 24, 40, 0.06);
    }
    .site-header .container {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
    }
    .brand-logo {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 22px;
        font-weight: 700;
        color: var(--text-dark);
        text-decoration: none;
        letter-spacing: 0.5px;
        white-space: nowrap;
    }
    .brand-logo .logo-icon {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 38px;
        height: 38px;
        background: var(--primary);
        color: #fff;
        border-radius: 8px;
        font-size: 18px;
        font-weight: 700;
    }
    .brand-logo .logo-text {
        font-size: 20px;
    }
    .brand-logo .logo-text span {
        color: var(--primary);
    }
    .nav-toggle {
        display: none;
        background: none;
        border: none;
        font-size: 22px;
        color: var(--text-dark);
        cursor: pointer;
        padding: 8px;
        border-radius: 4px;
    }
    .nav-menu {
        display: flex;
        align-items: center;
        gap: 6px;
        list-style: none;
        margin: 0;
        padding: 0;
    }
    .nav-menu li a {
        display: block;
        padding: 8px 14px;
        font-size: 14.5px;
        font-weight: 600;
        color: var(--text-body);
        border-radius: 6px;
        transition: var(--transition);
        white-space: nowrap;
        text-decoration: none;
    }
    .nav-menu li a:hover {
        color: var(--primary);
        background: var(--primary-light);
    }
    .nav-menu li a.active {
        color: var(--primary);
        background: var(--primary-light);
    }

    /* ========== Hero 全宽沉浸 ========== */
    .hero-section {
        position: relative;
        min-height: 520px;
        display: flex;
        align-items: center;
        padding: var(--spacing-xl) 0 var(--spacing-lg);
        background: linear-gradient(135deg, #0a1a3e 0%, #1A5CFF 55%, #3d7bff 100%);
        overflow: hidden;
        isolation: isolate;
    }
    .hero-section::before {
        content: '';
        position: absolute;
        inset: 0;
        background-image: url('/assets/images/backpic/back-2.webp');
        background-size: cover;
        background-position: center;
        opacity: 0.35;
        z-index: -1;
    }
    .hero-section::after {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(180deg, rgba(10, 26, 62, 0.4) 0%, rgba(26, 92, 255, 0.5) 60%, rgba(26, 92, 255, 0.85) 100%);
        z-index: -1;
    }
    .hero-section .container {
        position: relative;
        z-index: 2;
    }
    .hero-grid {
        display: grid;
        grid-template-columns: 1.1fr 0.9fr;
        gap: 40px;
        align-items: center;
    }
    .hero-content .hero-tag {
        display: inline-block;
        background: rgba(255, 255, 255, 0.16);
        color: #fff;
        padding: 5px 16px;
        border-radius: 20px;
        font-size: 13px;
        font-weight: 600;
        letter-spacing: 1px;
        margin-bottom: 16px;
        backdrop-filter: blur(8px);
    }
    .hero-content h1 {
        font-size: 38px;
        font-weight: 700;
        color: #fff;
        line-height: 1.3;
        margin-bottom: 16px;
        letter-spacing: 0.5px;
    }
    .hero-content .hero-subtitle {
        font-size: 17px;
        color: rgba(255, 255, 255, 0.88);
        max-width: 520px;
        line-height: 1.7;
        margin-bottom: 28px;
    }
    .hero-actions {
        display: flex;
        gap: 14px;
        flex-wrap: wrap;
    }
    .hero-actions .btn {
        padding: 14px 32px;
        font-size: 16px;
    }
    .hero-countdown-panel {
        background: rgba(255, 255, 255, 0.1);
        border: 1px solid rgba(255, 255, 255, 0.2);
        border-radius: var(--radius-lg);
        padding: 28px 24px;
        backdrop-filter: blur(12px);
        box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    }
    .hero-countdown-panel .countdown-title {
        color: #fff;
        font-size: 14px;
        font-weight: 600;
        letter-spacing: 1px;
        margin-bottom: 16px;
        text-align: center;
    }
    .countdown-grid {
        display: flex;
        justify-content: center;
        gap: 16px;
        margin-bottom: 20px;
    }
    .countdown-item {
        text-align: center;
        background: rgba(255, 255, 255, 0.14);
        border-radius: var(--radius-sm);
        padding: 12px 10px;
        min-width: 62px;
    }
    .countdown-item .countdown-num {
        font-size: 28px;
        font-weight: 700;
        color: #fff;
        line-height: 1.2;
    }
    .countdown-item .countdown-label {
        font-size: 11px;
        color: rgba(255, 255, 255, 0.75);
        font-weight: 500;
        letter-spacing: 0.5px;
    }
    .hero-panel-actions {
        display: flex;
        gap: 10px;
        flex-wrap: wrap;
        justify-content: center;
    }
    .hero-panel-actions .btn {
        padding: 10px 22px;
        font-size: 14px;
        flex: 1;
        min-width: 120px;
    }

    /* ========== 深度正文区 ========== */
    .deep-content-section {
        background: #fff;
        padding: var(--spacing-xl) 0;
    }
    .deep-content-grid {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 48px;
        align-items: center;
    }
    .deep-content-text h2 {
        font-size: 28px;
        font-weight: 700;
        color: var(--text-dark);
        margin-bottom: 20px;
        line-height: 1.4;
    }
    .deep-content-text p {
        font-size: 16px;
        color: var(--text-body);
        line-height: 1.9;
        margin-bottom: 16px;
        text-align: justify;
    }
    .deep-content-text h3 {
        font-size: 19px;
        font-weight: 600;
        color: var(--text-dark);
        margin: 24px 0 12px;
    }
    .deep-content-image {
        border-radius: var(--radius-lg);
        overflow: hidden;
        box-shadow: var(--shadow-md);
    }
    .deep-content-image img {
        width: 100%;
        height: 380px;
        object-fit: cover;
    }

    /* ========== 课程列表区 ========== */
    .course-list-section {
        background: var(--primary-bg);
        padding: var(--spacing-xl) 0;
    }
    .course-list {
        display: flex;
        flex-direction: column;
        gap: 20px;
    }
    .course-item {
        display: grid;
        grid-template-columns: 220px 1fr auto;
        gap: 24px;
        align-items: center;
        background: #fff;
        border: 1px solid var(--border);
        border-radius: var(--radius-md);
        padding: 20px 24px;
        box-shadow: var(--shadow-sm);
        transition: var(--transition);
    }
    .course-item:hover {
        box-shadow: var(--shadow-md);
        transform: translateY(-2px);
        border-color: var(--primary-light);
    }
    .course-item-img {
        width: 220px;
        height: 140px;
        border-radius: var(--radius-sm);
        overflow: hidden;
        object-fit: cover;
    }
    .course-item-img img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }
    .course-item-info h3 {
        font-size: 18px;
        font-weight: 600;
        color: var(--text-dark);
        margin-bottom: 8px;
    }
    .course-item-info p {
        font-size: 14px;
        color: var(--text-muted);
        line-height: 1.7;
        margin-bottom: 10px;
    }
    .course-item-tags {
        display: flex;
        gap: 8px;
        flex-wrap: wrap;
    }
    .course-item-tags span {
        font-size: 12px;
        background: var(--primary-light);
        color: var(--primary);
        padding: 3px 12px;
        border-radius: 14px;
        font-weight: 500;
    }
    .course-item-action {
        text-align: right;
        white-space: nowrap;
    }

    /* ========== 数据展示区 ========== */
    .stats-section {
        background: var(--primary-dark);
        padding: var(--spacing-lg) 0;
        position: relative;
        overflow: hidden;
    }
    .stats-section::before {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(135deg, rgba(255,255,255,0.04) 0%, transparent 50%);
    }
    .stats-section .container {
        position: relative;
        z-index: 1;
    }
    .stats-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 24px;
        text-align: center;
    }
    .stat-item .stat-number {
        font-size: 32px;
        font-weight: 700;
        color: #fff;
        letter-spacing: 0.5px;
        line-height: 1.3;
    }
    .stat-item .stat-label {
        font-size: 14px;
        color: rgba(255, 255, 255, 0.75);
        margin-top: 6px;
        font-weight: 500;
    }

    /* ========== 教学流程区 ========== */
    .process-section {
        background: #fff;
        padding: var(--spacing-xl) 0;
    }
    .process-steps {
        display: grid;
        grid-template-columns: repeat(5, 1fr);
        gap: 20px;
        align-items: start;
    }
    .process-step {
        text-align: center;
        padding: 20px 14px;
        background: var(--primary-bg);
        border-radius: var(--radius-md);
        border: 1px solid var(--border);
        transition: var(--transition);
    }
    .process-step:hover {
        box-shadow: var(--shadow-md);
        transform: translateY(-2px);
    }
    .process-step .step-badge {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 42px;
        height: 42px;
        background: var(--primary);
        color: #fff;
        border-radius: 50%;
        font-size: 17px;
        font-weight: 700;
        margin-bottom: 12px;
    }
    .process-step h4 {
        font-size: 15px;
        font-weight: 600;
        color: var(--text-dark);
        margin-bottom: 8px;
    }
    .process-step p {
        font-size: 13px;
        color: var(--text-muted);
        line-height: 1.6;
        margin: 0;
    }

    /* ========== 优势展示区 ========== */
    .advantages-section {
        background: var(--primary-bg);
        padding: var(--spacing-xl) 0;
    }
    .advantages-grid {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 28px;
    }
    .advantage-card {
        display: flex;
        gap: 16px;
        background: #fff;
        border: 1px solid var(--border);
        border-radius: var(--radius-md);
        padding: 24px;
        box-shadow: var(--shadow-sm);
        transition: var(--transition);
    }
    .advantage-card:hover {
        box-shadow: var(--shadow-md);
        transform: translateY(-2px);
    }
    .advantage-card .adv-icon {
        flex-shrink: 0;
        width: 48px;
        height: 48px;
        display: flex;
        align-items: center;
        justify-content: center;
        background: var(--primary-light);
        color: var(--primary);
        border-radius: var(--radius-sm);
        font-size: 20px;
    }
    .advantage-card h4 {
        font-size: 17px;
        font-weight: 600;
        color: var(--text-dark);
        margin-bottom: 6px;
    }
    .advantage-card p {
        font-size: 14px;
        color: var(--text-muted);
        line-height: 1.7;
        margin: 0;
    }

    /* ========== 学员证言 ========== */
    .testimonials-section {
        background: #fff;
        padding: var(--spacing-xl) 0;
    }
    .testimonials-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 28px;
    }
    .testimonial-card {
        background: var(--primary-bg);
        border-radius: var(--radius-md);
        padding: 28px 24px;
        border: 1px solid var(--border);
        transition: var(--transition);
    }
    .testimonial-card:hover {
        box-shadow: var(--shadow-sm);
    }
    .testimonial-card .testimonial-quote {
        font-size: 14.5px;
        color: var(--text-body);
        line-height: 1.8;
        margin-bottom: 20px;
        font-style: italic;
    }
    .testimonial-card .testimonial-author {
        display: flex;
        align-items: center;
        gap: 12px;
    }
    .testimonial-author .avatar-placeholder {
        width: 42px;
        height: 42px;
        border-radius: 50%;
        background: var(--primary);
        color: #fff;
        display: flex;
        align-items: center;
        justify-content: center;
        font-weight: 700;
        font-size: 16px;
        flex-shrink: 0;
    }
    .testimonial-author .author-info {
        font-size: 13px;
    }
    .testimonial-author .author-name {
        font-weight: 600;
        color: var(--text-dark);
    }
    .testimonial-author .author-role {
        color: var(--text-muted);
        font-size: 12px;
    }

    /* ========== CTA 区块 ========== */
    .cta-section {
        background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
        padding: var(--spacing-xl) 0;
        text-align: center;
        position: relative;
        overflow: hidden;
    }
    .cta-section::before {
        content: '';
        position: absolute;
        inset: 0;
        background-image: url('/assets/images/backpic/back-3.webp');
        background-size: cover;
        background-position: center;
        opacity: 0.15;
    }
    .cta-section .container {
        position: relative;
        z-index: 1;
    }
    .cta-section h2 {
        font-size: 30px;
        font-weight: 700;
        color: #fff;
        margin-bottom: 12px;
    }
    .cta-section p {
        font-size: 16px;
        color: rgba(255, 255, 255, 0.85);
        max-width: 560px;
        margin: 0 auto 28px;
        line-height: 1.7;
    }

    /* ========== FAQ ========== */
    .faq-section {
        background: var(--primary-bg);
        padding: var(--spacing-xl) 0;
    }
    .faq-list {
        max-width: 800px;
        margin: 0 auto;
    }
    .faq-item {
        background: #fff;
        border: 1px solid var(--border);
        border-radius: var(--radius-sm);
        margin-bottom: 12px;
        overflow: hidden;
        transition: var(--transition);
    }
    .faq-item:hover {
        border-color: var(--primary-light);
    }
    .faq-item summary {
        padding: 16px 20px;
        font-size: 15px;
        font-weight: 600;
        color: var(--text-dark);
        cursor: pointer;
        list-style: none;
        display: flex;
        align-items: center;
        justify-content: space-between;
    }
    .faq-item summary::-webkit-details-marker {
        display: none;
    }
    .faq-item summary .faq-icon {
        font-size: 14px;
        color: var(--primary);
        transition: var(--transition);
        flex-shrink: 0;
        margin-left: 8px;
    }
    .faq-item[open] summary .faq-icon {
        transform: rotate(180deg);
    }
    .faq-item .faq-answer {
        padding: 0 20px 18px;
        font-size: 14.5px;
        color: var(--text-body);
        line-height: 1.8;
    }

    /* ========== 页脚 ========== */
    .site-footer {
        background: #0d1b3e;
        color: rgba(255, 255, 255, 0.7);
        padding: 56px 0 0;
        font-size: 14px;
    }
    .footer-grid {
        display: grid;
        grid-template-columns: 2fr 1fr 1fr 1fr;
        gap: 40px;
        padding-bottom: 40px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .footer-brand .footer-logo {
        font-size: 22px;
        font-weight: 700;
        color: #fff;
        display: inline-block;
        margin-bottom: 14px;
    }
    .footer-brand .footer-logo span {
        color: var(--primary);
    }
    .footer-brand p {
        font-size: 13.5px;
        line-height: 1.7;
        color: rgba(255, 255, 255, 0.65);
        max-width: 300px;
    }
    .footer-col h4 {
        font-size: 15px;
        font-weight: 600;
        color: #fff;
        margin-bottom: 16px;
    }
    .footer-col ul {
        list-style: none;
        padding: 0;
        margin: 0;
    }
    .footer-col ul li {
        margin-bottom: 10px;
    }
    .footer-col ul li a {
        color: rgba(255, 255, 255, 0.65);
        font-size: 13.5px;
        text-decoration: none;
        transition: var(--transition);
    }
    .footer-col ul li a:hover {
        color: #fff;
    }
    .footer-bottom {
        padding: 20px 0;
        display: flex;
        flex-direction: column;
        gap: 8px;
        align-items: center;
        text-align: center;
        font-size: 12.5px;
        color: rgba(255, 255, 255, 0.5);
    }
    .footer-links {
        display: flex;
        gap: 14px;
        align-items: center;
    }
    .footer-links a {
        color: rgba(255, 255, 255, 0.65);
        font-size: 13px;
        text-decoration: none;
    }
    .footer-links a:hover {
        color: #fff;
    }
    .footer-links span {
        color: rgba(255, 255, 255, 0.3);
    }
    .beian {
        font-size: 12px;
        color: rgba(255, 255, 255, 0.45);
    }

    /* ========== 响应式 ========== */
    @media (max-width: 1024px) {
        .hero-grid {
            grid-template-columns: 1fr;
            gap: 28px;
        }
        .hero-content h1 {
            font-size: 30px;
        }
        .hero-section {
            min-height: auto;
            padding: 48px 0 40px;
        }
        .deep-content-grid {
            grid-template-columns: 1fr;
            gap: 28px;
        }
        .deep-content-image img {
            height: 280px;
        }
        .course-item {
            grid-template-columns: 160px 1fr;
            gap: 16px;
        }
        .course-item-img {
            width: 160px;
            height: 110px;
        }
        .course-item-action {
            grid-column: 1 / -1;
            text-align: left;
        }
        .stats-grid {
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        .process-steps {
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
        }
        .advantages-grid {
            grid-template-columns: 1fr;
        }
        .testimonials-grid {
            grid-template-columns: 1fr;
        }
        .footer-grid {
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }
        .footer-brand {
            grid-column: 1 / -1;
        }
    }

    @media (max-width: 768px) {
        :root {
            --spacing-xl: 48px;
            --spacing-lg: 28px;
        }
        section {
            padding: var(--spacing-lg) 0;
        }
        .nav-toggle {
            display: block;
        }
        .nav-menu {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            background: #fff;
            flex-direction: column;
            padding: 16px 20px;
            border-bottom: 1px solid var(--border);
            box-shadow: var(--shadow-md);
            gap: 4px;
            z-index: 99;
        }
        .nav-menu.open {
            display: flex;
        }
        .nav-menu li {
            width: 100%;
        }
        .nav-menu li a {
            padding: 12px 16px;
            font-size: 15px;
            width: 100%;
        }
        .site-header {
            position: sticky;
        }
        .top-info-bar .container {
            flex-direction: column;
            gap: 6px;
            text-align: center;
        }
        .hero-content h1 {
            font-size: 26px;
        }
        .hero-actions .btn {
            width: 100%;
            padding: 13px 20px;
        }
        .countdown-grid {
            gap: 8px;
        }
        .countdown-item {
            min-width: 50px;
            padding: 10px 6px;
        }
        .countdown-item .countdown-num {
            font-size: 22px;
        }
        .process-steps {
            grid-template-columns: 1fr 1fr;
        }
        .stats-grid {
            grid-template-columns: 1fr 1fr;
        }
        .footer-grid {
            grid-template-columns: 1fr;
            gap: 24px;
        }
        .footer-brand {
            grid-column: auto;
        }
        .course-item {
            grid-template-columns: 1fr;
        }
        .course-item-img {
            width: 100%;
            height: 180px;
        }
        .course-item-action {
            grid-column: auto;
        }
    }

    @media (max-width: 520px) {
        .hero-content h1 {
            font-size: 22px;
            line-height: 1.4;
        }
        .hero-content .hero-subtitle {
            font-size: 14px;
        }
        .process-steps {
            grid-template-columns: 1fr;
        }
        .stats-grid {
            grid-template-columns: 1fr;
        }
        .countdown-grid {
            gap: 6px;
        }
        .countdown-item {
            min-width: 40px;
            padding: 8px 4px;
        }
        .countdown-item .countdown-num {
            font-size: 18px;
        }
        .btn-lg {
            padding: 14px 24px;
            font-size: 14px;
        }
        .section-header h2 {
            font-size: 22px;
        }
        .deep-content-text h2 {
            font-size: 22px;
        }
        .top-info-right {
            gap: 10px;
            flex-wrap: wrap;
            justify-content: center;
        }
    }

/* roulang page: category7 */
:root {
            --primary: #1A5CFF;
            --primary-dark: #0d47d4;
            --primary-light: #e8efff;
            --primary-bg: #F7F9FC;
            --accent: #00A88F;
            --text-dark: #101828;
            --text-body: #475467;
            --text-muted: #667085;
            --border: #E4E7EC;
            --card-bg: #FFFFFF;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(16, 24, 40, 0.06);
            --shadow-md: 0 8px 24px rgba(16, 24, 40, 0.12);
            --shadow-lg: 0 16px 48px rgba(16, 24, 40, 0.16);
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 72px;
            --transition: all 0.3s ease;
            --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-body);
            background-color: var(--primary-bg);
            overflow-x: hidden;
            margin: 0;
            padding: 0;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 3px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

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

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

        .container-wide {
            max-width: 1360px;
            margin: 0 auto;
            padding: 0 20px;
        }

        section {
            padding: var(--spacing-lg) 0;
        }
        .section-lg {
            padding: var(--spacing-xl) 0;
        }
        .section-sm {
            padding: var(--spacing-md) 0;
        }

        .text-muted { color: var(--text-muted); }
        .text-dark { color: var(--text-dark); }
        .text-primary { color: var(--primary); }
        .text-accent { color: var(--accent); }
        .text-center { text-align: center; }
        .text-white { color: #fff; }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            font-size: 15px;
            font-weight: 600;
            font-family: var(--font-stack);
            border-radius: var(--radius-sm);
            border: 1px solid transparent;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
            line-height: 1.4;
            text-decoration: none;
            white-space: nowrap;
        }
        .btn-primary {
            background-color: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .btn-primary:hover {
            background-color: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(26, 92, 255, 0.35);
        }
        .btn-secondary {
            background-color: transparent;
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-secondary:hover {
            background-color: var(--primary);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(26, 92, 255, 0.25);
        }
        .btn-white {
            background-color: #fff;
            color: var(--primary);
            border-color: #fff;
        }
        .btn-white:hover {
            background-color: var(--primary-light);
            color: var(--primary-dark);
            transform: translateY(-1px);
        }
        .btn-lg {
            padding: 16px 40px;
            font-size: 16px;
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
        }
        .btn-block {
            width: 100%;
        }

        .card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 24px;
            transition: var(--transition);
        }
        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        .tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 12px;
        }
        .tag-accent {
            background: #E6F7F4;
            color: var(--accent);
        }
        .tag-white {
            background: rgba(255,255,255,0.2);
            color: #fff;
        }

        .badge {
            display: inline-block;
            background: var(--accent);
            color: #fff;
            padding: 2px 10px;
            border-radius: 12px;
            font-size: 12px;
            font-weight: 700;
        }
        .badge-hot {
            background: #FF6B35;
        }

        .divider {
            border: none;
            border-top: 1px solid var(--border);
            margin: 32px 0;
        }

        .section-header {
            margin-bottom: 32px;
        }
        .section-header .tag {
            margin-bottom: 8px;
        }
        .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-dark);
            margin: 0 0 12px 0;
            line-height: 1.4;
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 680px;
            margin-bottom: 32px;
            line-height: 1.7;
        }

        /* Top info bar */
        .top-info-bar {
            background: #0d47d4;
            color: rgba(255,255,255,0.9);
            font-size: 13px;
            padding: 6px 0;
        }
        .top-info-bar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .top-info-bar a {
            color: #fff;
            font-weight: 500;
        }
        .top-info-bar a:hover {
            color: #cddfff;
        }
        .top-info-left {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .top-info-right {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        /* Site header */
        .site-header {
            background: #fff;
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 1px 4px rgba(16,24,40,0.04);
        }
        .site-header .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 68px;
            gap: 24px;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 22px;
            color: var(--text-dark);
            text-decoration: none;
            flex-shrink: 0;
        }
        .brand-logo:hover {
            color: var(--primary);
        }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--primary);
            color: #fff;
            border-radius: 8px;
            font-size: 18px;
            font-weight: 700;
        }
        .logo-text {
            letter-spacing: 1px;
        }
        .logo-text span {
            color: var(--primary);
        }
        .nav-menu {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            align-items: center;
            gap: 28px;
        }
        .nav-menu li {
            margin: 0;
            padding: 0;
        }
        .nav-menu a {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-body);
            text-decoration: none;
            padding: 8px 0;
            border-bottom: 2px solid transparent;
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-menu a:hover {
            color: var(--primary);
            border-bottom-color: var(--primary);
        }
        .nav-menu a.active {
            color: var(--primary);
            border-bottom-color: var(--primary);
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            color: var(--text-dark);
            cursor: pointer;
            padding: 8px;
            line-height: 1;
        }

        /* Breadcrumb */
        .breadcrumb-bar {
            background: #fff;
            border-bottom: 1px solid var(--border);
            padding: 12px 0;
        }
        .breadcrumb {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-muted);
        }
        .breadcrumb li {
            margin: 0;
            padding: 0;
        }
        .breadcrumb li:not(:last-child)::after {
            content: "/";
            margin-left: 8px;
            color: var(--text-muted);
        }
        .breadcrumb a {
            color: var(--text-muted);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .current {
            color: var(--primary);
            font-weight: 600;
        }

        /* Category Hero */
        .cat-hero {
            background: linear-gradient(135deg, #f0f5ff 0%, #e8efff 40%, #f7f9fc 100%);
            padding: 48px 0 56px;
            position: relative;
            overflow: hidden;
        }
        .cat-hero::before {
            content: "";
            position: absolute;
            top: -80px;
            right: -80px;
            width: 300px;
            height: 300px;
            background: rgba(26,92,255,0.05);
            border-radius: 50%;
            z-index: 0;
        }
        .cat-hero .container {
            position: relative;
            z-index: 1;
        }
        .cat-hero-grid {
            display: flex;
            align-items: center;
            gap: 40px;
            flex-wrap: wrap;
        }
        .cat-hero-content {
            flex: 1 1 480px;
            min-width: 0;
        }
        .cat-hero-content h1 {
            font-size: 34px;
            font-weight: 700;
            color: var(--text-dark);
            margin: 0 0 16px 0;
            line-height: 1.35;
        }
        .cat-hero-content h1 span {
            color: var(--primary);
        }
        .cat-hero-desc {
            font-size: 17px;
            color: var(--text-body);
            margin-bottom: 24px;
            line-height: 1.8;
            max-width: 560px;
        }
        .cat-hero-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .cat-hero-card {
            flex: 0 0 340px;
            background: #fff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border);
            overflow: hidden;
            max-width: 100%;
        }
        .cat-hero-card .hero-card-img {
            height: 180px;
            overflow: hidden;
            position: relative;
        }
        .cat-hero-card .hero-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .cat-hero-card .hero-card-body {
            padding: 20px 24px 24px;
        }
        .cat-hero-card .hero-card-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-dark);
            margin: 0 0 8px 0;
        }
        .cat-hero-card .hero-card-text {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 16px;
            line-height: 1.6;
        }
        .cat-hero-card .hero-card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--text-muted);
        }

        /* Deep content section */
        .deep-content-section {
            background: #fff;
            padding: 48px 0;
        }
        .deep-content-section .prose {
            max-width: 838px;
            margin: 0 auto;
            font-size: 16px;
            line-height: 2;
            color: var(--text-body);
        }
        .deep-content-section .prose h2 {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-dark);
            margin: 32px 0 16px;
            line-height: 1.5;
        }
        .deep-content-section .prose p {
            margin: 0 0 16px;
        }
        .deep-content-section .prose strong {
            color: var(--text-dark);
            font-weight: 600;
        }

        /* Activity list section */
        .activity-list-section {
            background: var(--primary-bg);
            padding: 56px 0;
        }
        .activity-list {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
        }
        .activity-item {
            flex: 1 1 calc(50% - 10px);
            min-width: 300px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 20px 24px;
            display: flex;
            align-items: flex-start;
            gap: 18px;
            transition: var(--transition);
        }
        .activity-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: var(--primary);
        }
        .activity-item-icon {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
        }
        .activity-item-content {
            flex: 1;
            min-width: 0;
        }
        .activity-item-title {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-dark);
            margin: 0 0 6px 0;
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .activity-item-text {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0;
        }

        /* Stats section */
        .stats-section {
            background: #fff;
            padding: 56px 0;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .stats-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            justify-content: space-between;
        }
        .stat-item {
            flex: 1 1 200px;
            text-align: center;
            padding: 16px;
        }
        .stat-number {
            font-size: 36px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
        }
        .stat-label {
            font-size: 14px;
            color: var(--text-muted);
            margin-top: 6px;
            line-height: 1.5;
        }

        /* Steps section */
        .steps-section {
            background: var(--primary-bg);
            padding: 56px 0;
        }
        .steps-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
        }
        .step-card {
            flex: 1 1 220px;
            min-width: 220px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 24px;
            position: relative;
            transition: var(--transition);
        }
        .step-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--primary);
            color: #fff;
            border-radius: 50%;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .step-title {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-dark);
            margin: 0 0 8px 0;
        }
        .step-text {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0;
        }

        /* CTA section */
        .cta-section {
            background: linear-gradient(135deg, #1A5CFF 0%, #0d47d4 100%);
            padding: 64px 0;
            color: #fff;
        }
        .cta-inner {
            text-align: center;
            max-width: 720px;
            margin: 0 auto;
        }
        .cta-title {
            font-size: 28px;
            font-weight: 700;
            line-height: 1.4;
            margin: 0 0 12px 0;
        }
        .cta-text {
            font-size: 16px;
            color: rgba(255,255,255,0.85);
            margin-bottom: 28px;
            line-height: 1.7;
        }
        .cta-actions {
            display: flex;
            gap: 12px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* FAQ section */
        .faq-section {
            background: #fff;
            padding: 56px 0;
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            background: var(--primary-bg);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary);
        }
        .faq-item summary {
            padding: 16px 24px;
            font-weight: 600;
            font-size: 15px;
            color: var(--text-dark);
            cursor: pointer;
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::after {
            content: "\f078";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            font-size: 13px;
            color: var(--text-muted);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item[open] summary::after {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-item .faq-answer {
            padding: 0 24px 18px;
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.8;
        }
        .faq-item[open] {
            background: #fff;
            box-shadow: var(--shadow-sm);
            border-color: var(--primary-light);
        }

        /* Footer */
        .site-footer {
            background: #0d1b33;
            color: rgba(255,255,255,0.7);
            padding: 56px 0 0;
        }
        .footer-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
            padding-bottom: 40px;
        }
        .footer-brand {
            flex: 1 1 280px;
            min-width: 260px;
        }
        .footer-logo {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            text-decoration: none;
            display: inline-block;
            margin-bottom: 12px;
        }
        .footer-logo span {
            color: #5b8cff;
        }
        .footer-logo:hover {
            color: #cddfff;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            margin: 0;
        }
        .footer-col {
            flex: 1 1 160px;
            min-width: 140px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin: 0 0 14px 0;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: rgba(255,255,255,0.6);
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: #fff;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding: 20px 0;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 13px;
        }
        .footer-links {
            display: flex;
            gap: 8px;
            align-items: center;
        }
        .footer-links a {
            color: rgba(255,255,255,0.6);
        }
        .footer-links a:hover {
            color: #fff;
        }
        .beian {
            font-size: 13px;
            color: rgba(255,255,255,0.5);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .nav-menu {
                gap: 18px;
            }
            .nav-menu a {
                font-size: 14px;
            }
            .cat-hero-content h1 {
                font-size: 28px;
            }
            .section-title {
                font-size: 24px;
            }
            .cat-hero-card {
                flex: 0 0 300px;
            }
        }

        @media (max-width: 768px) {
            .site-header .container {
                height: 60px;
                position: relative;
            }
            .nav-toggle {
                display: block;
            }
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 60px;
                left: 0;
                right: 0;
                background: #fff;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-md);
                padding: 16px 20px;
                gap: 8px;
                z-index: 200;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu a {
                display: block;
                padding: 12px 0;
                border-bottom: 1px solid var(--border);
                font-size: 15px;
            }
            .nav-menu a.active {
                border-bottom-color: var(--primary);
            }
            .cat-hero {
                padding: 32px 0 40px;
            }
            .cat-hero-grid {
                flex-direction: column;
                gap: 24px;
            }
            .cat-hero-content h1 {
                font-size: 24px;
            }
            .cat-hero-desc {
                font-size: 15px;
            }
            .cat-hero-card {
                flex: 1 1 100%;
                width: 100%;
            }
            .cat-hero-actions {
                flex-direction: column;
                gap: 8px;
            }
            .cat-hero-actions .btn {
                width: 100%;
            }
            .activity-item {
                flex: 1 1 100%;
                min-width: 0;
                padding: 16px 18px;
            }
            .stats-grid {
                gap: 12px;
            }
            .stat-number {
                font-size: 28px;
            }
            .step-card {
                flex: 1 1 100%;
                min-width: 0;
            }
            .cta-title {
                font-size: 22px;
            }
            .cta-actions {
                flex-direction: column;
                gap: 8px;
            }
            .cta-actions .btn {
                width: 100%;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .footer-links {
                justify-content: center;
            }
            .top-info-bar .container {
                flex-direction: column;
                gap: 4px;
                text-align: center;
                padding: 8px 0;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .cat-hero-content h1 {
                font-size: 21px;
            }
            .cat-hero-desc {
                font-size: 14px;
            }
            .section-title {
                font-size: 21px;
            }
            .card {
                padding: 16px;
            }
            .step-card {
                padding: 16px;
            }
            .faq-item summary {
                padding: 12px 16px;
                font-size: 14px;
            }
            .faq-item .faq-answer {
                padding: 0 16px 14px;
                font-size: 13px;
            }
            .stat-number {
                font-size: 24px;
            }
            .btn-lg {
                padding: 14px 24px;
                font-size: 15px;
            }
        }