/* roulang page: index */
:root {
            --primary: #1A5FC9;
            --primary-dark: #1259B2;
            --secondary: #0B2B50;
            --neutral: #5C6E86;
            --bg: #F5F8FC;
            --card-bg: #FFFFFF;
            --light-blue: #EAF2FB;
            --border: #E3E9F1;
            --shadow-sm: 0 6px 16px rgba(15, 36, 67, 0.06);
            --shadow-lg: 0 12px 28px rgba(15, 36, 67, 0.12);
            --radius-sm: 8px;
            --radius-md: 10px;
            --radius-lg: 14px;
            --font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --transition: 0.2s ease;
            --section-padding: 72px 0;
            --container-max: 1200px;
        }

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

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

        body {
            font-family: var(--font-family);
            font-size: 15px;
            line-height: 1.75;
            color: #2d3a4a;
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
        }

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

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

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

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

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* Header & Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--card-bg);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 1px 8px rgba(15, 36, 67, 0.04);
        }

        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            gap: 20px;
            flex-wrap: nowrap;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
            color: var(--secondary);
            font-weight: 700;
            font-size: 20px;
            letter-spacing: 0.5px;
            white-space: nowrap;
            flex-shrink: 0;
        }

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

        .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--primary);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .nav-chips {
            display: flex;
            align-items: center;
            gap: 6px;
            overflow-x: auto;
            scrollbar-width: thin;
            scrollbar-color: var(--border) transparent;
            -webkit-overflow-scrolling: touch;
            padding: 4px 0;
            flex: 1;
            min-width: 0;
        }

        .nav-chips::-webkit-scrollbar {
            height: 4px;
        }
        .nav-chips::-webkit-scrollbar-thumb {
            background: var(--border);
            border-radius: 4px;
        }

        .nav-chip {
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            border-radius: 8px;
            font-size: 13px;
            font-weight: 500;
            color: var(--neutral);
            background: transparent;
            border: 1px solid transparent;
            text-decoration: none;
            white-space: nowrap;
            transition: all var(--transition);
            flex-shrink: 0;
        }

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

        .nav-chip.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            text-decoration: none;
        }

        .header-cta {
            display: inline-flex;
            align-items: center;
            padding: 9px 18px;
            border-radius: 8px;
            background: var(--primary);
            color: #fff;
            text-decoration: none;
            font-size: 13px;
            font-weight: 600;
            white-space: nowrap;
            flex-shrink: 0;
            transition: all var(--transition);
            border: none;
            min-height: 38px;
        }

        .header-cta:hover {
            background: var(--primary-dark);
            color: #fff;
            text-decoration: none;
        }

        .header-cta:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        @media (max-width: 900px) {
            .header-top {
                height: auto;
                flex-wrap: wrap;
                padding: 10px 0;
                gap: 8px;
            }
            .nav-chips {
                order: 3;
                width: 100%;
                flex-basis: 100%;
                padding-bottom: 6px;
            }
            .header-cta {
                margin-left: auto;
            }
        }

        @media (max-width: 480px) {
            .logo {
                font-size: 17px;
            }
            .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 14px;
                border-radius: 6px;
            }
            .header-cta {
                padding: 7px 14px;
                font-size: 12px;
                min-height: 34px;
            }
            .nav-chip {
                padding: 6px 12px;
                font-size: 12px;
            }
        }

        /* Hero */
        .hero-section {
            position: relative;
            background: linear-gradient(135deg, #f0f6fe 0%, #f8fbff 45%, #eef4fc 100%);
            padding: 56px 0 48px;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 50%;
            height: 100%;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center right;
            opacity: 0.09;
            pointer-events: none;
        }

        .hero-inner {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: flex-start;
            gap: 40px;
            flex-wrap: wrap;
        }

        .hero-brand {
            flex: 1;
            min-width: 280px;
            max-width: 580px;
        }

        .hero-brand-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--light-blue);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 20px;
            margin-bottom: 18px;
            letter-spacing: 0.3px;
        }

        .hero-brand-badge .dot {
            width: 6px;
            height: 6px;
            background: #22c55e;
            border-radius: 50%;
            animation: pulse-dot 2s infinite;
        }

        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.5;
                transform: scale(1.3);
            }
        }

        .hero-brand h1 {
            font-size: 36px;
            line-height: 1.35;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 16px;
            letter-spacing: 0.2px;
        }

        .hero-brand h1 em {
            font-style: normal;
            color: var(--primary);
        }

        .hero-brand .hero-desc {
            font-size: 15px;
            line-height: 1.8;
            color: var(--neutral);
            margin-bottom: 24px;
            max-width: 540px;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 11px 22px;
            border-radius: 8px;
            font-size: 14px;
            font-weight: 600;
            text-decoration: none;
            transition: all var(--transition);
            border: 2px solid transparent;
            cursor: pointer;
            min-height: 44px;
            line-height: 1.4;
        }

        .btn:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

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

        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            text-decoration: none;
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(26, 95, 201, 0.25);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.15);
        }

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

        .btn-secondary:hover {
            background: var(--light-blue);
            border-color: var(--primary-dark);
            color: var(--primary-dark);
            text-decoration: none;
            transform: translateY(-1px);
        }

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

        .hero-metrics {
            display: flex;
            flex-wrap: wrap;
            gap: 18px 32px;
        }

        .hero-metric {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .hero-metric .metric-value {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
        }

        .hero-metric .metric-label {
            font-size: 13px;
            color: var(--neutral);
        }

        .hero-side {
            flex: 0 0 320px;
            max-width: 320px;
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 24px;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .hero-side-card {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 14px;
            background: #f8fbff;
            border-radius: 10px;
            border: 1px solid var(--border);
        }

        .hero-side-card .icon {
            width: 38px;
            height: 38px;
            background: var(--light-blue);
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 16px;
            flex-shrink: 0;
        }

        .hero-side-card .info h4 {
            font-size: 13px;
            font-weight: 600;
            color: var(--secondary);
            margin-bottom: 2px;
        }

        .hero-side-card .info p {
            font-size: 12px;
            color: var(--neutral);
            line-height: 1.5;
        }

        @media (max-width: 1024px) {
            .hero-inner {
                gap: 28px;
            }
            .hero-side {
                flex: 1 1 100%;
                max-width: 100%;
                flex-direction: row;
                flex-wrap: wrap;
            }
            .hero-side-card {
                flex: 1 1 calc(50% - 8px);
                min-width: 200px;
            }
        }

        @media (max-width: 768px) {
            .hero-section {
                padding: 36px 0 32px;
            }
            .hero-brand h1 {
                font-size: 26px;
            }
            .hero-brand .hero-desc {
                font-size: 14px;
            }
            .hero-metric .metric-value {
                font-size: 22px;
            }
            .hero-side-card {
                flex: 1 1 100%;
            }
        }

        @media (max-width: 480px) {
            .hero-section {
                padding: 28px 0 24px;
            }
            .hero-brand h1 {
                font-size: 22px;
            }
            .hero-brand .hero-desc {
                font-size: 13px;
                line-height: 1.7;
            }
            .hero-actions {
                flex-direction: column;
                gap: 8px;
            }
            .btn {
                width: 100%;
                padding: 10px 16px;
                font-size: 13px;
                min-height: 40px;
            }
            .hero-metrics {
                gap: 12px 20px;
            }
            .hero-metric .metric-value {
                font-size: 19px;
            }
            .hero-metric .metric-label {
                font-size: 11px;
            }
        }

        /* Section Common */
        section {
            padding: var(--section-padding);
        }

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

        .section-header h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--secondary);
            line-height: 1.35;
            margin-bottom: 10px;
        }

        .section-header p {
            font-size: 15px;
            color: var(--neutral);
            max-width: 720px;
            line-height: 1.75;
        }

        .section-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            background: var(--light-blue);
            padding: 4px 12px;
            border-radius: 16px;
            margin-bottom: 12px;
            letter-spacing: 0.4px;
        }

        @media (max-width: 768px) {
            section {
                padding: 48px 0;
            }
            .section-header {
                margin-bottom: 24px;
            }
            .section-header h2 {
                font-size: 22px;
            }
            .section-header p {
                font-size: 14px;
            }
        }

        @media (max-width: 480px) {
            section {
                padding: 40px 0;
            }
            .section-header h2 {
                font-size: 19px;
            }
        }

        /* Metrics Dashboard */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }

        .metric-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 22px 20px;
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }

        .metric-card::after {
            content: '';
            position: absolute;
            bottom: 0;
            right: 0;
            width: 90px;
            height: 60px;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: bottom right;
            opacity: 0.06;
            pointer-events: none;
        }

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

        .metric-card .metric-icon {
            width: 40px;
            height: 40px;
            background: var(--light-blue);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 17px;
            margin-bottom: 12px;
        }

        .metric-card .metric-number {
            font-size: 30px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 4px;
        }

        .metric-card .metric-label {
            font-size: 13px;
            color: var(--neutral);
            line-height: 1.5;
        }

        .metric-card .metric-trend {
            font-size: 12px;
            color: #16a34a;
            font-weight: 600;
            margin-top: 6px;
        }

        @media (max-width: 1024px) {
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
        }

        @media (max-width: 480px) {
            .metrics-grid {
                grid-template-columns: 1fr;
                gap: 10px;
            }
            .metric-card {
                padding: 16px;
            }
            .metric-card .metric-number {
                font-size: 24px;
            }
        }

        /* Service Matrix */
        .service-matrix {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }

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

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

        .service-card.wide {
            grid-column: span 1;
        }

        .service-card.tall {
            grid-row: span 2;
        }

        .service-card .service-img {
            width: 100%;
            height: 160px;
            object-fit: cover;
            border-radius: 8px;
            margin-bottom: 6px;
            background-color: var(--light-blue);
        }

        .service-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--secondary);
            line-height: 1.4;
        }

        .service-card p {
            font-size: 14px;
            color: var(--neutral);
            line-height: 1.75;
            flex: 1;
        }

        .service-card .service-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

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

        @media (max-width: 768px) {
            .service-matrix {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .service-card {
                padding: 20px;
            }
            .service-card .service-img {
                height: 120px;
            }
        }

        /* Comparison Table */
        .comparison-wrapper {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
        }

        .comparison-grid {
            display: grid;
            grid-template-columns: 1.2fr 1fr 1fr 1fr;
            width: 100%;
        }

        .comparison-header {
            display: contents;
        }

        .comparison-cell {
            padding: 16px 18px;
            text-align: center;
            font-size: 13px;
            border-bottom: 1px solid var(--border);
        }

        .comparison-header .comparison-cell {
            background: #eaf2fb;
            font-weight: 700;
            color: var(--secondary);
            font-size: 13px;
            border-bottom-width: 2px;
            border-bottom-color: #cfdff0;
        }

        .comparison-header .comparison-cell:first-child {
            text-align: left;
        }

        .comparison-row {
            display: contents;
        }

        .comparison-row .comparison-cell {
            background: transparent;
            border-bottom: 1px solid var(--border);
        }

        .comparison-row:nth-child(even) .comparison-cell {
            background: #fafcfe;
        }

        .comparison-row .comparison-cell:first-child {
            text-align: left;
            font-weight: 600;
            color: var(--secondary);
        }

        .highlight-tag {
            display: inline-block;
            background: var(--light-blue);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 2px 10px;
            border-radius: 12px;
        }

        .comparison-value {
            font-weight: 600;
            color: #2d3a4a;
        }

        .comparison-value.best {
            color: var(--primary);
            font-weight: 700;
        }

        @media (max-width: 768px) {
            .comparison-grid {
                grid-template-columns: 1fr;
            }
            .comparison-header {
                display: none;
            }
            .comparison-row {
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 0;
                border-bottom: 1px solid var(--border);
                padding: 10px 16px;
                background: var(--card-bg);
            }
            .comparison-row .comparison-cell {
                border-bottom: none;
                text-align: left;
                padding: 6px 4px;
                font-size: 13px;
            }
            .comparison-row .comparison-cell:first-child {
                font-weight: 700;
                color: var(--secondary);
            }
            .comparison-row .comparison-cell:nth-child(2) {
                text-align: right;
            }
            .comparison-row .comparison-cell:nth-child(3),
            .comparison-row .comparison-cell:nth-child(4) {
                text-align: left;
                font-size: 12px;
                color: var(--neutral);
            }
        }

        /* Hot Recommendations */
        .hot-recs {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 18px;
        }

        .hot-large-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }

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

        .hot-large-card .hot-img {
            width: 100%;
            height: 220px;
            object-fit: cover;
            background-color: var(--light-blue);
        }

        .hot-large-card .hot-content {
            padding: 20px 24px 24px;
        }

        .hot-tag {
            display: inline-block;
            background: #fee2e2;
            color: #b91c1c;
            font-size: 11px;
            font-weight: 700;
            padding: 3px 10px;
            border-radius: 12px;
            margin-bottom: 8px;
            letter-spacing: 0.3px;
        }

        .hot-large-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 8px;
        }

        .hot-large-card p {
            font-size: 13px;
            color: var(--neutral);
            line-height: 1.7;
        }

        .hot-small-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .hot-small-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 16px 18px;
            transition: all var(--transition);
            display: flex;
            gap: 12px;
            align-items: flex-start;
            cursor: pointer;
        }

        .hot-small-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-1px);
        }

        .hot-small-card .hot-thumb {
            width: 56px;
            height: 56px;
            border-radius: 6px;
            object-fit: cover;
            background-color: var(--light-blue);
            flex-shrink: 0;
        }

        .hot-small-card .hot-info h4 {
            font-size: 14px;
            font-weight: 600;
            color: var(--secondary);
            margin-bottom: 3px;
            line-height: 1.4;
        }

        .hot-small-card .hot-info p {
            font-size: 12px;
            color: var(--neutral);
            line-height: 1.5;
        }

        .hot-small-card .hot-info .hot-meta {
            font-size: 11px;
            color: var(--primary);
            font-weight: 600;
            margin-top: 4px;
        }

        @media (max-width: 768px) {
            .hot-recs {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .hot-large-card .hot-img {
                height: 160px;
            }
            .hot-large-card .hot-content {
                padding: 16px 18px 18px;
            }
        }

        /* News List */
        .news-layout {
            display: grid;
            grid-template-columns: 1.6fr 1fr;
            gap: 28px;
        }

        .news-list {
            display: flex;
            flex-direction: column;
            gap: 0;
        }

        .news-item {
            padding: 18px 0;
            border-bottom: 1px solid var(--border);
            display: flex;
            gap: 14px;
            align-items: flex-start;
            transition: background var(--transition);
        }

        .news-item:first-child {
            border-top: 1px solid var(--border);
        }

        .news-item:hover {
            background: #fafcfe;
            padding-left: 8px;
            border-radius: 4px;
        }

        .news-item .news-index {
            font-size: 13px;
            font-weight: 700;
            color: var(--primary);
            background: var(--light-blue);
            width: 28px;
            height: 28px;
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .news-item .news-content h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--secondary);
            line-height: 1.5;
            margin-bottom: 4px;
            cursor: pointer;
        }

        .news-item .news-content h4:hover {
            color: var(--primary);
        }

        .news-item .news-content p {
            font-size: 13px;
            color: var(--neutral);
            line-height: 1.7;
        }

        .news-sidebar {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 24px;
            height: fit-content;
        }

        .news-sidebar h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 16px;
        }

        .news-sidebar-item {
            display: flex;
            gap: 10px;
            align-items: center;
            padding: 10px 0;
            border-bottom: 1px solid var(--border);
        }

        .news-sidebar-item:last-child {
            border-bottom: none;
        }

        .news-sidebar-item .thumb {
            width: 44px;
            height: 44px;
            border-radius: 6px;
            background: var(--light-blue);
            object-fit: cover;
            flex-shrink: 0;
        }

        .news-sidebar-item h5 {
            font-size: 13px;
            font-weight: 600;
            color: var(--secondary);
            line-height: 1.4;
        }

        .news-sidebar-item p {
            font-size: 11px;
            color: var(--neutral);
        }

        @media (max-width: 768px) {
            .news-layout {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .news-item {
                padding: 14px 0;
            }
            .news-sidebar {
                padding: 18px;
            }
        }

        /* User Reviews */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
        }

        .review-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 22px 20px;
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

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

        .review-card .review-stars {
            color: #f59e0b;
            font-size: 13px;
            letter-spacing: 2px;
        }

        .review-card p {
            font-size: 13px;
            color: #3d4d5f;
            line-height: 1.75;
            flex: 1;
        }

        .review-card .review-author {
            font-size: 12px;
            font-weight: 600;
            color: var(--secondary);
        }

        .review-card .review-role {
            font-size: 11px;
            color: var(--neutral);
        }

        @media (max-width: 1024px) {
            .reviews-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
        }

        @media (max-width: 600px) {
            .reviews-grid {
                grid-template-columns: 1fr;
                gap: 10px;
            }
            .review-card {
                padding: 16px;
            }
        }

        /* Partner Tags */
        .partner-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .partner-tag {
            display: flex;
            flex-direction: column;
            align-items: flex-start;
            gap: 4px;
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 12px 18px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            min-width: 140px;
            flex: 1 1 auto;
            max-width: 200px;
        }

        .partner-tag:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-1px);
            border-color: #cfdff0;
        }

        .partner-tag .tag-name {
            font-size: 13px;
            font-weight: 700;
            color: var(--secondary);
        }

        .partner-tag .tag-desc {
            font-size: 11px;
            color: var(--neutral);
            line-height: 1.5;
        }

        @media (max-width: 600px) {
            .partner-tag {
                min-width: calc(50% - 10px);
                max-width: none;
                padding: 10px 14px;
            }
        }

        /* Brand Intro */
        .brand-intro-section {
            background: #f8fbff;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .brand-intro {
            display: grid;
            grid-template-columns: 1fr 1.5fr;
            gap: 32px;
            align-items: center;
        }

        .brand-intro .brand-visual {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 28px;
            text-align: center;
            box-shadow: var(--shadow-sm);
        }

        .brand-intro .brand-visual .logo-lg {
            width: 72px;
            height: 72px;
            background: var(--primary);
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 28px;
            font-weight: 700;
            margin: 0 auto 16px;
        }

        .brand-intro .brand-visual h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--secondary);
        }

        .brand-intro .brand-text p {
            font-size: 14px;
            color: #3d4d5f;
            line-height: 1.85;
            margin-bottom: 14px;
        }

        .brand-intro .brand-text p:last-child {
            margin-bottom: 0;
        }

        @media (max-width: 768px) {
            .brand-intro {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .brand-intro .brand-visual {
                padding: 20px;
            }
        }

        /* Platform Assurance */
        .assurance-badges {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
        }

        .assurance-badge {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 20px;
            text-align: center;
            transition: all var(--transition);
        }

        .assurance-badge:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }

        .assurance-badge .assurance-icon {
            width: 44px;
            height: 44px;
            background: var(--light-blue);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 18px;
            margin: 0 auto 12px;
        }

        .assurance-badge h4 {
            font-size: 14px;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 4px;
        }

        .assurance-badge p {
            font-size: 12px;
            color: var(--neutral);
            line-height: 1.6;
        }

        @media (max-width: 768px) {
            .assurance-badges {
                grid-template-columns: 1fr;
                gap: 10px;
            }
            .assurance-badge {
                padding: 16px;
            }
        }

        /* Entry Matrix */
        .entry-matrix {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 12px;
        }

        .entry-btn {
            display: flex;
            align-items: center;
            gap: 10px;
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 14px 16px;
            box-shadow: var(--shadow-sm);
            text-decoration: none;
            color: var(--secondary);
            font-size: 13px;
            font-weight: 600;
            transition: all var(--transition);
        }

        .entry-btn:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-1px);
            color: var(--primary);
            border-color: #cfdff0;
            text-decoration: none;
        }

        .entry-btn .entry-icon {
            width: 32px;
            height: 32px;
            background: var(--light-blue);
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 14px;
            flex-shrink: 0;
        }

        @media (max-width: 1024px) {
            .entry-matrix {
                grid-template-columns: repeat(2, 1fr);
                gap: 10px;
            }
        }

        @media (max-width: 480px) {
            .entry-matrix {
                grid-template-columns: 1fr;
                gap: 8px;
            }
            .entry-btn {
                padding: 11px 14px;
                font-size: 12px;
            }
        }

        /* Membership */
        .member-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 14px;
        }

        .member-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 20px 18px;
            transition: all var(--transition);
            text-align: center;
        }

        .member-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
            border-color: #cfdff0;
        }

        .member-card .member-icon {
            width: 40px;
            height: 40px;
            background: var(--light-blue);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 16px;
            margin: 0 auto 10px;
        }

        .member-card h4 {
            font-size: 13px;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 4px;
        }

        .member-card p {
            font-size: 12px;
            color: var(--neutral);
            line-height: 1.55;
        }

        .member-cta {
            text-align: center;
            margin-top: 20px;
        }

        @media (max-width: 1024px) {
            .member-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 10px;
            }
        }

        @media (max-width: 480px) {
            .member-grid {
                grid-template-columns: 1fr;
                gap: 8px;
            }
            .member-card {
                padding: 16px;
            }
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
            max-width: 860px;
        }

        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition);
        }

        .faq-item.active {
            border-left: 3px solid var(--primary);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 16px 20px;
            cursor: pointer;
            font-size: 14px;
            font-weight: 600;
            color: var(--secondary);
            user-select: none;
            transition: background var(--transition);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            font-family: inherit;
            line-height: 1.5;
        }

        .faq-question:hover {
            background: #f8fbff;
        }

        .faq-question:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: -2px;
        }

        .faq-question .faq-icon {
            font-size: 18px;
            color: var(--primary);
            flex-shrink: 0;
            transition: transform 0.25s ease;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            padding: 0 20px;
            font-size: 13px;
            color: var(--neutral);
            line-height: 1.8;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 20px 16px;
        }

        @media (max-width: 480px) {
            .faq-question {
                padding: 13px 16px;
                font-size: 13px;
            }
            .faq-answer {
                font-size: 12px;
                padding: 0 16px;
            }
            .faq-item.active .faq-answer {
                padding: 0 16px 14px;
            }
        }

        /* Conversion Form */
        .form-section {
            background: var(--light-blue);
            border-radius: var(--radius-lg);
            padding: 40px;
            margin-top: 20px;
        }

        .form-layout {
            display: grid;
            grid-template-columns: 1fr 1.5fr;
            gap: 32px;
            align-items: start;
        }

        .form-value-points h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 14px;
        }

        .form-value-points ul {
            list-style: none;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .form-value-points ul li {
            font-size: 13px;
            color: #3d4d5f;
            padding-left: 22px;
            position: relative;
            line-height: 1.6;
        }

        .form-value-points ul li::before {
            content: '✓';
            position: absolute;
            left: 0;
            top: 0;
            color: var(--primary);
            font-weight: 700;
            font-size: 14px;
        }

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

        .form-group {
            margin-bottom: 18px;
        }

        .form-group label {
            display: block;
            font-size: 13px;
            font-weight: 600;
            color: var(--secondary);
            margin-bottom: 6px;
        }

        .form-group label .required {
            color: #dc2626;
            margin-left: 2px;
        }

        .form-group input,
        .form-group select,
        .form-group textarea {
            width: 100%;
            padding: 10px 14px;
            border-radius: 8px;
            border: 1px solid var(--border);
            background: #fff;
            font-size: 14px;
            font-family: inherit;
            transition: border-color var(--transition), box-shadow var(--transition);
            color: #2d3a4a;
            line-height: 1.5;
            appearance: none;
            -webkit-appearance: none;
        }

        .form-group input:focus,
        .form-group select:focus,
        .form-group textarea:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(26, 95, 201, 0.12);
        }

        .form-group textarea {
            resize: vertical;
            min-height: 90px;
        }

        .form-group input::placeholder,
        .form-group textarea::placeholder {
            color: #9aa7b8;
        }

        .form-submit {
            width: 100%;
            padding: 12px 20px;
            border-radius: 8px;
            background: var(--primary);
            color: #fff;
            border: 2px solid var(--primary);
            font-size: 15px;
            font-weight: 700;
            cursor: pointer;
            transition: all var(--transition);
            min-height: 46px;
            letter-spacing: 0.3px;
        }

        .form-submit:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(26, 95, 201, 0.25);
        }

        .form-submit:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .form-submit:active {
            transform: translateY(0);
        }

        @media (max-width: 768px) {
            .form-section {
                padding: 24px 18px;
            }
            .form-layout {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .form-card {
                padding: 18px;
            }
        }

        /* Footer */
        .site-footer {
            background: var(--secondary);
            color: #c9d6e8;
            padding: 48px 0 0;
            margin-top: 40px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 28px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-brand h3 {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }

        .footer-brand p {
            font-size: 12px;
            color: #a8b8ce;
            line-height: 1.7;
        }

        .footer-col h4 {
            font-size: 13px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: 0.3px;
        }

        .footer-col a {
            display: block;
            font-size: 12px;
            color: #a8b8ce;
            text-decoration: none;
            padding: 4px 0;
            transition: color var(--transition);
        }

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

        .footer-bottom {
            padding: 18px 0;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 10px;
            font-size: 11px;
            color: #8a9cb2;
        }

        .footer-bottom a {
            color: #a8b8ce;
            text-decoration: none;
            margin-left: 12px;
        }

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

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 6px;
            }
            .footer-bottom a {
                margin-left: 6px;
            }
        }

        @media (max-width: 480px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .site-footer {
                padding: 32px 0 0;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #1A5FC9;
            --primary-dark: #1259B2;
            --secondary: #0B2B50;
            --neutral: #5C6E86;
            --bg: #F5F8FC;
            --card-bg: #FFFFFF;
            --light-blue: #EAF2FB;
            --border: #E3E9F1;
            --shadow-sm: 0 6px 16px rgba(15, 36, 67, 0.06);
            --shadow-lg: 0 12px 28px rgba(15, 36, 67, 0.12);
            --radius-sm: 8px;
            --radius-md: 10px;
            --radius-lg: 14px;
            --font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --transition: 0.2s ease;
            --section-padding: 72px 0;
            --container-max: 1200px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        body {
            font-family: var(--font-family);
            font-size: 15px;
            line-height: 1.75;
            color: #2d3a4a;
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--primary);
            text-decoration: underline;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        /* Header & Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--card-bg);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 1px 8px rgba(15, 36, 67, 0.04);
        }
        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            gap: 20px;
            flex-wrap: nowrap;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
            color: var(--secondary);
            font-weight: 700;
            font-size: 20px;
            letter-spacing: 0.5px;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .logo:hover {
            color: var(--primary);
        }
        .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--primary);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .nav-chips {
            display: flex;
            align-items: center;
            gap: 6px;
            overflow-x: auto;
            scrollbar-width: thin;
            scrollbar-color: var(--border) transparent;
            -webkit-overflow-scrolling: touch;
            padding: 4px 0;
            flex: 1;
            min-width: 0;
        }
        .nav-chips::-webkit-scrollbar {
            height: 4px;
        }
        .nav-chips::-webkit-scrollbar-thumb {
            background: var(--border);
            border-radius: 4px;
        }
        .nav-chip {
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            border-radius: 8px;
            font-size: 13px;
            font-weight: 500;
            color: var(--neutral);
            background: transparent;
            border: 1px solid transparent;
            text-decoration: none;
            white-space: nowrap;
            transition: all var(--transition);
            flex-shrink: 0;
        }
        .nav-chip:hover {
            background: var(--light-blue);
            color: var(--primary);
        }
        .nav-chip.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            text-decoration: none;
        }
        .header-cta {
            display: inline-flex;
            align-items: center;
            padding: 9px 18px;
            border-radius: 8px;
            background: var(--primary);
            color: #fff;
            text-decoration: none;
            font-size: 13px;
            font-weight: 600;
            white-space: nowrap;
            flex-shrink: 0;
            transition: all var(--transition);
            border: none;
            min-height: 38px;
        }
        .header-cta:hover {
            background: var(--primary-dark);
            color: #fff;
            text-decoration: none;
        }
        .header-cta:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        /* Breadcrumb */
        .breadcrumb-section {
            background: var(--light-blue);
            border-bottom: 1px solid var(--border);
            padding: 12px 0;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 13px;
            color: var(--neutral);
        }
        .breadcrumb a {
            color: var(--primary);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb-separator {
            color: #9aacbf;
            user-select: none;
        }
        .breadcrumb-current {
            color: var(--secondary);
            font-weight: 600;
        }
        /* Page Header */
        .page-header {
            background: linear-gradient(135deg, #f0f6fe 0%, #f8fbff 45%, #eef4fc 100%);
            padding: 48px 0 36px;
            border-bottom: 1px solid var(--border);
            position: relative;
            overflow: hidden;
        }
        .page-header::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 40%;
            height: 100%;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center right;
            opacity: 0.12;
            pointer-events: none;
        }
        .page-header-inner {
            display: flex;
            flex-wrap: wrap;
            align-items: flex-start;
            gap: 32px;
            position: relative;
            z-index: 1;
        }
        .page-header-main {
            flex: 1;
            min-width: 280px;
        }
        .page-header h1 {
            font-size: 34px;
            line-height: 1.35;
            color: var(--secondary);
            font-weight: 700;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }
        .page-header-subtitle {
            font-size: 16px;
            color: #415467;
            line-height: 1.7;
            margin-bottom: 18px;
            max-width: 680px;
        }
        .header-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 20px;
            border-radius: 8px;
            font-size: 14px;
            font-weight: 600;
            text-decoration: none;
            transition: all var(--transition);
            border: 1px solid transparent;
            cursor: pointer;
            min-height: 40px;
        }
        .btn:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            text-decoration: none;
        }
        .btn-outline {
            background: #fff;
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-outline:hover {
            background: var(--light-blue);
            color: var(--primary-dark);
            text-decoration: none;
        }
        .btn-outline:active {
            border-color: var(--primary-dark);
        }
        .btn-primary:active {
            box-shadow: inset 0 2px 4px rgba(0,0,0,0.15);
        }
        /* Step Navigation Chips */
        .step-nav-section {
            background: var(--card-bg);
            border-bottom: 2px solid var(--border);
            padding: 16px 0;
            position: sticky;
            top: 64px;
            z-index: 99;
            box-shadow: 0 1px 4px rgba(15, 36, 67, 0.04);
        }
        .step-nav-chips {
            display: flex;
            align-items: center;
            gap: 8px;
            overflow-x: auto;
            scrollbar-width: thin;
            scrollbar-color: var(--border) transparent;
            -webkit-overflow-scrolling: touch;
            padding: 4px 0;
        }
        .step-nav-chips::-webkit-scrollbar {
            height: 4px;
        }
        .step-nav-chips::-webkit-scrollbar-thumb {
            background: var(--border);
            border-radius: 4px;
        }
        .step-chip {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: 8px;
            font-size: 13px;
            font-weight: 500;
            color: var(--neutral);
            background: #fff;
            border: 1px solid var(--border);
            text-decoration: none;
            white-space: nowrap;
            transition: all var(--transition);
            flex-shrink: 0;
        }
        .step-chip:hover {
            background: var(--light-blue);
            color: var(--primary);
            border-color: var(--primary);
        }
        .step-chip.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .step-chip-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 22px;
            height: 22px;
            background: rgba(255,255,255,0.2);
            border-radius: 50%;
            font-size: 11px;
            font-weight: 700;
        }
        .step-chip:hover .step-chip-number,
        .step-chip.active .step-chip-number {
            background: rgba(255,255,255,0.35);
        }
        /* Main Content Layout */
        .main-content-section {
            padding: 48px 0 64px;
        }
        .content-layout {
            display: grid;
            grid-template-columns: 1fr 280px;
            gap: 32px;
            align-items: start;
        }
        /* Step Cards */
        .step-cards-list {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        .step-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 28px;
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }
        .step-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }
        .step-card-header {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 16px;
        }
        .step-badge {
            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;
            flex-shrink: 0;
        }
        .step-card-title {
            font-size: 20px;
            font-weight: 700;
            color: var(--secondary);
            line-height: 1.35;
        }
        .step-card-desc {
            font-size: 15px;
            color: #415467;
            line-height: 1.75;
            margin-bottom: 16px;
        }
        .step-card-content {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
        }
        .step-card-text {
            flex: 1;
            min-width: 260px;
        }
        .step-card-image {
            width: 180px;
            flex-shrink: 0;
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: 0 4px 10px rgba(15, 36, 67, 0.05);
            align-self: flex-start;
        }
        .step-card-image img {
            width: 100%;
            height: 140px;
            object-fit: cover;
        }
        .step-card-list-details {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .step-card-list-details li {
            padding: 4px 0 4px 20px;
            position: relative;
            color: #415467;
            font-size: 14px;
            line-height: 1.7;
        }
        .step-card-list-details li::before {
            content: '›';
            position: absolute;
            left: 0;
            top: 2px;
            color: var(--primary);
            font-size: 18px;
            font-weight: 700;
            line-height: 1.4;
        }
        .code-block {
            background: #f5f8fc;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 14px 16px;
            font-family: 'SF Mono', 'Consolas', 'Monaco', 'Courier New', monospace;
            font-size: 13px;
            color: #1a2b3d;
            line-height: 1.6;
            overflow-x: auto;
            margin: 12px 0;
            white-space: pre-wrap;
            word-break: break-all;
        }
        .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 12px;
        }
        .tag {
            display: inline-flex;
            align-items: center;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 500;
            background: var(--light-blue);
            color: var(--primary);
            border: 1px solid var(--border);
            white-space: nowrap;
        }
        .tag-blue {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .tag-gray {
            background: #f0f3f7;
            color: var(--neutral);
            border-color: var(--border);
        }
        /* Sidebar Quick Anchor */
        .sidebar-anchor {
            position: sticky;
            top: 120px;
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 20px;
        }
        .sidebar-anchor h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 12px;
            padding-bottom: 8px;
            border-bottom: 1px solid var(--border);
        }
        .anchor-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 4px;
            margin: 0;
            padding: 0;
        }
        .anchor-list a {
            display: block;
            padding: 6px 10px;
            border-radius: 6px;
            font-size: 13px;
            color: var(--neutral);
            text-decoration: none;
            transition: all var(--transition);
        }
        .anchor-list a:hover {
            background: var(--light-blue);
            color: var(--primary);
        }
        .anchor-list .anchor-active {
            background: var(--light-blue);
            color: var(--primary);
            font-weight: 600;
        }
        /* System Requirements */
        .system-requirements-section {
            padding: 0 0 56px;
        }
        .section-title {
            font-size: 24px;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 8px;
            line-height: 1.35;
        }
        .section-subtitle {
            font-size: 15px;
            color: var(--neutral);
            margin-bottom: 28px;
            line-height: 1.6;
        }
        .requirements-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 20px;
            margin-bottom: 28px;
        }
        .requirement-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 20px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .requirement-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }
        .requirement-card h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 6px;
        }
        .requirement-card p {
            font-size: 13px;
            color: var(--neutral);
            line-height: 1.6;
        }
        .requirement-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            background: var(--light-blue);
            color: var(--primary);
            border-radius: 6px;
            margin-bottom: 10px;
            font-size: 16px;
        }
        /* Verification Section */
        .verification-section {
            padding: 48px 0 56px;
            background: var(--light-blue);
            border-radius: var(--radius-lg);
            margin-bottom: 48px;
        }
        .verification-inner {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            align-items: center;
        }
        .verification-text {
            flex: 1;
            min-width: 280px;
        }
        .verification-image {
            width: 200px;
            flex-shrink: 0;
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
        }
        .verification-image img {
            width: 100%;
            height: 160px;
            object-fit: cover;
        }
        /* FAQ */
        .faq-section {
            padding: 0 0 56px;
        }
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-lg);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 16px 20px;
            cursor: pointer;
            font-size: 15px;
            font-weight: 600;
            color: var(--secondary);
            background: #fff;
            border: none;
            width: 100%;
            text-align: left;
            transition: background var(--transition);
        }
        .faq-question:hover {
            background: var(--light-blue);
        }
        .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--light-blue);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
            transition: transform var(--transition);
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: var(--primary);
            color: #fff;
        }
        .faq-answer {
            display: none;
            padding: 0 20px 18px;
            font-size: 14px;
            color: #415467;
            line-height: 1.7;
            border-left: 3px solid var(--primary);
            margin-left: 20px;
        }
        .faq-item.open .faq-answer {
            display: block;
        }
        /* CTA Form */
        .cta-section {
            padding: 48px 0 56px;
        }
        .cta-wrapper {
            background: var(--light-blue);
            border-radius: var(--radius-lg);
            padding: 36px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            align-items: start;
        }
        .cta-value h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 12px;
            line-height: 1.35;
        }
        .cta-value p {
            font-size: 15px;
            color: #415467;
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .cta-value-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .cta-value-list li {
            padding: 6px 0 6px 24px;
            position: relative;
            font-size: 14px;
            color: #415467;
            line-height: 1.6;
        }
        .cta-value-list li::before {
            content: '✓';
            position: absolute;
            left: 0;
            top: 6px;
            color: var(--primary);
            font-weight: 700;
            font-size: 15px;
        }
        .cta-form-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 24px;
        }
        .form-field {
            margin-bottom: 16px;
        }
        .form-field label {
            display: block;
            font-size: 14px;
            font-weight: 500;
            color: var(--secondary);
            margin-bottom: 6px;
        }
        .form-field label .required {
            color: #dc3545;
            font-weight: 700;
        }
        .form-field input,
        .form-field select,
        .form-field textarea {
            width: 100%;
            padding: 10px 14px;
            border: 1px solid var(--border);
            border-radius: 8px;
            font-size: 14px;
            color: #2d3a4a;
            background: #fff;
            transition: all var(--transition);
            outline: none;
        }
        .form-field input:focus,
        .form-field select:focus,
        .form-field textarea:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(26, 95, 201, 0.12);
        }
        .form-field textarea {
            min-height: 90px;
            resize: vertical;
        }
        .form-submit {
            width: 100%;
            padding: 12px 20px;
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: all var(--transition);
            min-height: 44px;
        }
        .form-submit:hover {
            background: var(--primary-dark);
        }
        .form-submit:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        .form-submit:active {
            box-shadow: inset 0 2px 4px rgba(0,0,0,0.15);
        }
        /* Footer */
        .site-footer {
            background: var(--secondary);
            color: #d6e0e9;
            padding: 48px 0 24px;
            margin-top: auto;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand h3 {
            font-size: 18px;
            color: #fff;
            margin-bottom: 10px;
            font-weight: 700;
        }
        .footer-brand p {
            font-size: 13px;
            line-height: 1.7;
            color: #b5c4d2;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 14px;
            color: #fff;
            margin-bottom: 12px;
            font-weight: 600;
        }
        .footer-col a {
            display: block;
            color: #b5c4d2;
            text-decoration: none;
            font-size: 13px;
            padding: 4px 0;
            transition: color var(--transition);
        }
        .footer-col a:hover {
            color: #fff;
            text-decoration: underline;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.12);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px 24px;
            font-size: 12px;
            color: #8fa2b5;
            align-items: center;
        }
        .footer-bottom a {
            color: #b5c4d2;
            text-decoration: none;
        }
        .footer-bottom a:hover {
            color: #fff;
            text-decoration: underline;
        }
        /* Responsive */
        @media (max-width: 1024px) {
            .content-layout {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .sidebar-anchor {
                position: static;
                order: -1;
            }
            .cta-wrapper {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .header-top {
                height: auto;
                flex-wrap: wrap;
                padding: 10px 0;
                gap: 8px;
            }
            .nav-chips {
                order: 3;
                width: 100%;
                flex-basis: 100%;
                padding-bottom: 6px;
            }
            .header-cta {
                margin-left: auto;
            }
            .logo {
                font-size: 17px;
            }
            .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 14px;
                border-radius: 6px;
            }
            .header-cta {
                padding: 7px 14px;
                font-size: 12px;
                min-height: 34px;
            }
            .nav-chip {
                padding: 6px 12px;
                font-size: 12px;
            }
            .page-header {
                padding: 32px 0 24px;
            }
            .page-header h1 {
                font-size: 26px;
            }
            .page-header-subtitle {
                font-size: 14px;
            }
            .step-nav-section {
                top: auto;
                position: static;
            }
            .main-content-section {
                padding: 32px 0 48px;
            }
            .step-card {
                padding: 20px;
            }
            .step-card-title {
                font-size: 17px;
            }
            .step-card-image {
                width: 100%;
            }
            .step-card-image img {
                height: 120px;
            }
            .section-title {
                font-size: 20px;
            }
            .requirements-grid {
                grid-template-columns: 1fr;
            }
            .cta-wrapper {
                padding: 20px;
            }
            .cta-form-card {
                padding: 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 16px;
            }
            .page-header h1 {
                font-size: 22px;
            }
            .header-actions {
                flex-direction: column;
                width: 100%;
            }
            .btn {
                width: 100%;
                justify-content: center;
            }
            .step-card-header {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .step-card-content {
                flex-direction: column;
            }
            .step-card-image {
                width: 100%;
            }
            .step-card-image img {
                height: 100px;
            }
            .code-block {
                font-size: 12px;
                padding: 10px 12px;
            }
            .verification-inner {
                flex-direction: column;
            }
            .verification-image {
                width: 100%;
            }
            .verification-image img {
                height: 120px;
            }
            .faq-question {
                padding: 12px 14px;
                font-size: 14px;
            }
            .faq-answer {
                padding: 0 14px 14px;
                margin-left: 14px;
                font-size: 13px;
            }
            .cta-section {
                padding: 32px 0 40px;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #1A5FC9;
            --primary-dark: #1259B2;
            --secondary: #0B2B50;
            --neutral: #5C6E86;
            --bg: #F5F8FC;
            --card-bg: #FFFFFF;
            --light-blue: #EAF2FB;
            --border: #E3E9F1;
            --shadow-sm: 0 6px 16px rgba(15, 36, 67, 0.06);
            --shadow-lg: 0 12px 28px rgba(15, 36, 67, 0.12);
            --radius-sm: 8px;
            --radius-md: 10px;
            --radius-lg: 14px;
            --font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --transition: 0.2s ease;
            --section-padding: 72px 0;
            --container-max: 1200px;
        }

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

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

        body {
            font-family: var(--font-family);
            font-size: 15px;
            line-height: 1.75;
            color: #2d3a4a;
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
        }

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

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

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

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* Header & Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--card-bg);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 1px 8px rgba(15, 36, 67, 0.04);
        }
        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            gap: 20px;
            flex-wrap: nowrap;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
            color: var(--secondary);
            font-weight: 700;
            font-size: 20px;
            letter-spacing: 0.5px;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .logo:hover {
            color: var(--primary);
        }
        .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--primary);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .nav-chips {
            display: flex;
            align-items: center;
            gap: 6px;
            overflow-x: auto;
            scrollbar-width: thin;
            scrollbar-color: var(--border) transparent;
            -webkit-overflow-scrolling: touch;
            padding: 4px 0;
            flex: 1;
            min-width: 0;
        }
        .nav-chips::-webkit-scrollbar {
            height: 4px;
        }
        .nav-chips::-webkit-scrollbar-thumb {
            background: var(--border);
            border-radius: 4px;
        }
        .nav-chip {
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            border-radius: 8px;
            font-size: 13px;
            font-weight: 500;
            color: var(--neutral);
            background: transparent;
            border: 1px solid transparent;
            text-decoration: none;
            white-space: nowrap;
            transition: all var(--transition);
            flex-shrink: 0;
        }
        .nav-chip:hover {
            background: var(--light-blue);
            color: var(--primary);
        }
        .nav-chip.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            text-decoration: none;
        }
        .header-cta {
            display: inline-flex;
            align-items: center;
            padding: 9px 18px;
            border-radius: 8px;
            background: var(--primary);
            color: #fff;
            text-decoration: none;
            font-size: 13px;
            font-weight: 600;
            white-space: nowrap;
            flex-shrink: 0;
            transition: all var(--transition);
            border: none;
            min-height: 38px;
        }
        .header-cta:hover {
            background: var(--primary-dark);
            color: #fff;
            text-decoration: none;
        }
        .header-cta:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        @media (max-width: 768px) {
            .header-top {
                height: auto;
                flex-wrap: wrap;
                padding: 10px 0;
                gap: 8px;
            }
            .nav-chips {
                order: 3;
                width: 100%;
                flex-basis: 100%;
                padding-bottom: 6px;
            }
            .header-cta {
                margin-left: auto;
            }
            .logo {
                font-size: 17px;
            }
            .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 14px;
                border-radius: 6px;
            }
            .header-cta {
                padding: 7px 14px;
                font-size: 12px;
                min-height: 34px;
            }
            .nav-chip {
                padding: 6px 12px;
                font-size: 12px;
            }
        }

        /* Breadcrumb */
        .breadcrumb {
            background: var(--bg);
            padding: 12px 0;
            font-size: 13px;
            color: var(--neutral);
        }
        .breadcrumb a {
            color: var(--neutral);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb span {
            margin: 0 6px;
        }

        /* Hero Section */
        .hero-section {
            position: relative;
            background: linear-gradient(135deg, #f0f6fe 0%, #f8fbff 45%, #eef4fc 100%);
            padding: 56px 0 48px;
            overflow: hidden;
            border-bottom: 1px solid var(--border);
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 50%;
            height: 100%;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center right;
            opacity: 0.1;
            pointer-events: none;
        }
        .hero-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
            position: relative;
            z-index: 1;
        }
        .hero-content {
            flex: 1;
            max-width: 600px;
        }
        .hero-title {
            font-size: 36px;
            line-height: 1.3;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .hero-title .highlight {
            color: var(--primary);
        }
        .hero-subtitle {
            font-size: 16px;
            color: var(--neutral);
            line-height: 1.8;
            margin-bottom: 28px;
            max-width: 580px;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 24px;
            background: var(--primary);
            color: #fff;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 600;
            text-decoration: none;
            border: none;
            transition: all var(--transition);
            min-height: 44px;
            cursor: pointer;
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            text-decoration: none;
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }
        .btn-primary:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 24px;
            background: #fff;
            color: var(--primary);
            border: 1px solid var(--primary);
            border-radius: 8px;
            font-size: 15px;
            font-weight: 600;
            text-decoration: none;
            transition: all var(--transition);
            min-height: 44px;
            cursor: pointer;
        }
        .btn-secondary:hover {
            background: var(--light-blue);
            color: var(--primary-dark);
            text-decoration: none;
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }
        .hero-image {
            flex: 0 0 380px;
            max-width: 380px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border);
        }
        .hero-image img {
            width: 100%;
            height: auto;
            object-fit: cover;
        }

        @media (max-width: 1024px) {
            .hero-image {
                flex: 0 0 300px;
                max-width: 300px;
            }
        }
        @media (max-width: 768px) {
            .hero-inner {
                flex-direction: column;
                align-items: flex-start;
            }
            .hero-image {
                flex: none;
                max-width: 100%;
                width: 100%;
                margin-top: 24px;
            }
            .hero-title {
                font-size: 28px;
            }
            .hero-subtitle {
                font-size: 15px;
            }
        }

        /* Filter Bar */
        .filter-bar {
            background: var(--card-bg);
            border-bottom: 1px solid var(--border);
            padding: 16px 0;
            margin-bottom: 32px;
        }
        .filter-group {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }
        .filter-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--secondary);
            white-space: nowrap;
        }
        .filter-chip {
            display: inline-flex;
            align-items: center;
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 13px;
            background: #fff;
            border: 1px solid var(--border);
            color: var(--neutral);
            cursor: pointer;
            transition: all var(--transition);
            text-decoration: none;
            white-space: nowrap;
        }
        .filter-chip:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--light-blue);
        }
        .filter-chip.active {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
        }

        /* Section Common */
        .section {
            padding: var(--section-padding);
        }
        .section-header {
            margin-bottom: 32px;
        }
        .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--secondary);
            line-height: 1.35;
            margin-bottom: 12px;
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--neutral);
            max-width: 700px;
        }

        @media (max-width: 768px) {
            .section {
                padding: 48px 0;
            }
            .section-title {
                font-size: 22px;
            }
            .section-subtitle {
                font-size: 15px;
            }
        }

        /* Metrics Cards */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 32px;
        }
        .metric-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .metric-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
            border-color: var(--primary);
        }
        .metric-icon {
            width: 40px;
            height: 40px;
            margin-bottom: 16px;
            background: var(--light-blue);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 20px;
        }
        .metric-label {
            font-size: 14px;
            color: var(--neutral);
            margin-bottom: 8px;
        }
        .metric-value {
            font-size: 30px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
        }
        .metric-unit {
            font-size: 14px;
            color: var(--neutral);
            font-weight: 400;
        }
        .metric-change {
            display: inline-block;
            margin-top: 8px;
            padding: 4px 10px;
            border-radius: 12px;
            background: #e6f7e6;
            color: #1a7f37;
            font-size: 12px;
            font-weight: 600;
        }
        .metric-change.down {
            background: #fdeaea;
            color: #c0392b;
        }

        @media (max-width: 1024px) {
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .metrics-grid {
                grid-template-columns: 1fr;
            }
        }

        /* Comparison Table Card */
        .comparison-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            margin-top: 32px;
        }
        .comparison-header {
            background: var(--light-blue);
            padding: 16px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            border-bottom: 1px solid var(--border);
        }
        .comparison-title {
            font-size: 18px;
            font-weight: 600;
            color: var(--secondary);
        }
        .comparison-tag {
            padding: 4px 12px;
            border-radius: 12px;
            background: var(--primary);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
        }
        .comparison-body {
            padding: 20px 24px;
            overflow-x: auto;
        }
        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 600px;
        }
        .comparison-table th {
            background: var(--light-blue);
            text-align: left;
            padding: 12px 16px;
            font-size: 14px;
            font-weight: 600;
            color: var(--secondary);
            border-bottom: 2px solid var(--border);
            white-space: nowrap;
        }
        .comparison-table td {
            padding: 14px 16px;
            font-size: 14px;
            color: #2d3a4a;
            border-bottom: 1px solid var(--border);
            vertical-align: middle;
        }
        .comparison-table tr:last-child td {
            border-bottom: none;
        }
        .comparison-table tr:hover td {
            background: #fafcfe;
        }
        .value-highlight {
            color: var(--primary);
            font-weight: 700;
            white-space: nowrap;
        }
        .badge {
            display: inline-block;
            padding: 2px 8px;
            border-radius: 12px;
            font-size: 12px;
            font-weight: 600;
            background: var(--light-blue);
            color: var(--primary);
        }
        .badge.warn {
            background: #fff4e5;
            color: #b26a00;
        }
        .badge.success {
            background: #e6f7e6;
            color: #1a7f37;
        }

        @media (max-width: 768px) {
            .comparison-body {
                padding: 10px 0;
            }
            .comparison-table {
                min-width: 480px;
            }
            .comparison-table th,
            .comparison-table td {
                padding: 10px 12px;
                font-size: 13px;
            }
        }

        /* Scenario Cards */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 32px;
        }
        .scenario-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .scenario-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }
        .scenario-title {
            font-size: 18px;
            font-weight: 600;
            color: var(--secondary);
            margin-bottom: 12px;
        }
        .scenario-desc {
            font-size: 14px;
            color: var(--neutral);
            line-height: 1.7;
        }

        @media (max-width: 1024px) {
            .scenario-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .scenario-grid {
                grid-template-columns: 1fr;
            }
        }

        /* Steps */
        .steps-list {
            margin-top: 24px;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .step-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 20px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .step-item:hover {
            box-shadow: var(--shadow-lg);
            transform: translateX(2px);
        }
        .step-number {
            flex-shrink: 0;
            width: 36px;
            height: 36px;
            background: var(--primary);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 16px;
        }
        .step-content h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--secondary);
            margin-bottom: 6px;
        }
        .step-content p {
            font-size: 14px;
            color: var(--neutral);
        }

        /* FAQ */
        .faq-list {
            margin-top: 24px;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item[open] {
            border-left: 3px solid var(--primary);
        }
        .faq-question {
            padding: 16px 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            font-weight: 600;
            color: var(--secondary);
            font-size: 15px;
            list-style: none;
            user-select: none;
        }
        .faq-question::-webkit-details-marker {
            display: none;
        }
        .faq-question:after {
            content: '+';
            font-size: 22px;
            font-weight: 400;
            color: var(--neutral);
            transition: transform var(--transition);
        }
        .faq-item[open] .faq-question:after {
            content: '−';
            color: var(--primary);
        }
        .faq-answer {
            padding: 0 20px 18px 20px;
            font-size: 14px;
            color: var(--neutral);
            line-height: 1.8;
        }

        /* CTA Form */
        .cta-section {
            background: var(--light-blue);
            padding: 64px 0;
        }
        .cta-card {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            padding: 40px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            border: 1px solid var(--border);
        }
        .cta-value-list {
            list-style: none;
        }
        .cta-value-list li {
            margin-bottom: 12px;
            padding-left: 24px;
            position: relative;
            color: var(--secondary);
            font-size: 15px;
            line-height: 1.7;
        }
        .cta-value-list li:before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--primary);
            font-weight: 700;
        }
        .cta-form .form-group {
            margin-bottom: 18px;
        }
        .cta-form label {
            display: block;
            font-size: 14px;
            color: var(--neutral);
            margin-bottom: 6px;
            font-weight: 500;
        }
        .cta-form input,
        .cta-form select,
        .cta-form textarea {
            width: 100%;
            padding: 10px 12px;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            font-size: 14px;
            color: #2d3a4a;
            background: #fff;
            transition: all var(--transition);
        }
        .cta-form input:focus,
        .cta-form select:focus,
        .cta-form textarea:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(26, 95, 201, 0.15);
        }
        .cta-form textarea {
            resize: vertical;
            min-height: 100px;
        }
        .cta-form .btn-primary {
            width: 100%;
            font-size: 15px;
            padding: 12px 20px;
        }
        .required-mark {
            color: #c0392b;
        }

        @media (max-width: 768px) {
            .cta-card {
                grid-template-columns: 1fr;
                padding: 24px;
                gap: 24px;
            }
        }

        /* Footer */
        .site-footer {
            background: var(--secondary);
            color: rgba(255, 255, 255, 0.85);
            padding: 48px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand h3 {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.7);
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.75);
            text-decoration: none;
            font-size: 14px;
            margin-bottom: 10px;
            transition: color var(--transition);
        }
        .footer-col a:hover {
            color: #fff;
            text-decoration: underline;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.75);
            text-decoration: none;
        }
        .footer-bottom a:hover {
            color: #fff;
            text-decoration: underline;
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 8px;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #1A5FC9;
            --primary-dark: #1259B2;
            --secondary: #0B2B50;
            --neutral: #5C6E86;
            --bg: #F5F8FC;
            --card-bg: #FFFFFF;
            --light-blue: #EAF2FB;
            --border: #E3E9F1;
            --shadow-sm: 0 6px 16px rgba(15, 36, 67, 0.06);
            --shadow-lg: 0 12px 28px rgba(15, 36, 67, 0.12);
            --radius-sm: 8px;
            --radius-md: 10px;
            --radius-lg: 14px;
            --font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --transition: 0.2s ease;
            --section-padding: 72px 0;
            --container-max: 1200px;
            --text-main: #2d3a4a;
            --text-secondary: #415066;
            --text-light: #7b8ba1;
            --success: #1B9B6C;
            --warning: #C78A00;
            --danger: #C94B3B;
            --info: #6C8CBF;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-family);
            font-size: 15px;
            line-height: 1.75;
            color: var(--text-main);
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        main {
            flex: 1;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--primary);
            text-decoration: underline;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--secondary);
            line-height: 1.35;
            font-weight: 700;
        }
        h1 {
            font-size: 36px;
            letter-spacing: -0.5px;
        }
        h2 {
            font-size: 26px;
            letter-spacing: -0.3px;
        }
        h3 {
            font-size: 19px;
        }
        h4 {
            font-size: 17px;
        }
        p {
            margin-bottom: 16px;
        }
        .section {
            padding: 64px 0;
        }
        .section-title {
            margin-bottom: 12px;
        }
        .section-subtitle {
            color: var(--neutral);
            font-size: 16px;
            max-width: 780px;
            margin-bottom: 32px;
            line-height: 1.7;
        }
        .text-center {
            text-align: center;
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }

        /* Header Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--card-bg);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 1px 8px rgba(15, 36, 67, 0.04);
        }
        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            gap: 20px;
            flex-wrap: nowrap;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
            color: var(--secondary);
            font-weight: 700;
            font-size: 20px;
            letter-spacing: 0.5px;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .logo:hover {
            color: var(--primary);
        }
        .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--primary);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .nav-chips {
            display: flex;
            align-items: center;
            gap: 6px;
            overflow-x: auto;
            scrollbar-width: thin;
            scrollbar-color: var(--border) transparent;
            -webkit-overflow-scrolling: touch;
            padding: 4px 0;
            flex: 1;
            min-width: 0;
        }
        .nav-chips::-webkit-scrollbar {
            height: 4px;
        }
        .nav-chips::-webkit-scrollbar-thumb {
            background: var(--border);
            border-radius: 4px;
        }
        .nav-chip {
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            border-radius: 8px;
            font-size: 13px;
            font-weight: 500;
            color: var(--neutral);
            background: transparent;
            border: 1px solid transparent;
            text-decoration: none;
            white-space: nowrap;
            transition: all var(--transition);
            flex-shrink: 0;
        }
        .nav-chip:hover {
            background: var(--light-blue);
            color: var(--primary);
        }
        .nav-chip.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            text-decoration: none;
        }
        .header-cta {
            display: inline-flex;
            align-items: center;
            padding: 9px 18px;
            border-radius: 8px;
            background: var(--primary);
            color: #fff;
            text-decoration: none;
            font-size: 13px;
            font-weight: 600;
            white-space: nowrap;
            flex-shrink: 0;
            transition: all var(--transition);
            border: none;
            min-height: 38px;
        }
        .header-cta:hover {
            background: var(--primary-dark);
            color: #fff;
            text-decoration: none;
        }
        .header-cta:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        /* Breadcrumb */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-light);
            flex-wrap: wrap;
            margin-bottom: 16px;
        }
        .breadcrumb a {
            color: var(--text-light);
            text-decoration: none;
            transition: color var(--transition);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb span {
            color: var(--text-light);
            opacity: 0.6;
        }
        .breadcrumb .current {
            color: var(--neutral);
            font-weight: 500;
        }

        /* Compact Page Header */
        .page-header-compact {
            background: linear-gradient(135deg, #f0f6fe 0%, #f8fbff 45%, #eef4fc 100%);
            padding: 48px 0 40px;
            border-bottom: 1px solid var(--border);
            position: relative;
            overflow: hidden;
        }
        .page-header-compact::after {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 45%;
            height: 100%;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center right;
            opacity: 0.08;
            pointer-events: none;
        }
        .page-header-inner {
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
            align-items: flex-start;
            position: relative;
            z-index: 1;
        }
        .page-header-text {
            flex: 1 1 520px;
            min-width: 0;
        }
        .page-header-text h1 {
            font-size: 36px;
            margin-bottom: 12px;
            color: var(--secondary);
        }
        .page-header-text .header-desc {
            font-size: 16px;
            color: var(--neutral);
            line-height: 1.7;
            max-width: 680px;
            margin-bottom: 0;
        }
        .header-stats {
            flex: 0 0 300px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 14px;
            align-content: start;
        }
        .header-stat {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 16px 18px;
            box-shadow: var(--shadow-sm);
            text-align: center;
        }
        .header-stat .stat-number {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            display: block;
        }
        .header-stat .stat-label {
            font-size: 13px;
            color: var(--text-light);
            margin-top: 4px;
            display: block;
        }

        /* Filter Bar */
        .filter-bar {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 20px 24px;
            box-shadow: var(--shadow-sm);
            margin-top: 0;
            position: relative;
            z-index: 2;
        }
        .filter-row {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px;
            margin-bottom: 12px;
        }
        .filter-row:last-child {
            margin-bottom: 0;
        }
        .filter-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--secondary);
            white-space: nowrap;
            min-width: 72px;
        }
        .filter-chips {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            flex: 1;
            min-width: 0;
        }
        .filter-chip {
            display: inline-flex;
            align-items: center;
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
            color: var(--neutral);
            background: var(--bg);
            border: 1px solid var(--border);
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
            user-select: none;
        }
        .filter-chip:hover {
            background: var(--light-blue);
            border-color: var(--primary);
            color: var(--primary);
        }
        .filter-chip.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .filter-chip:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        .filter-search {
            display: flex;
            align-items: center;
            gap: 8px;
            flex: 0 0 auto;
        }
        .filter-search input {
            padding: 8px 14px;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            font-size: 14px;
            min-width: 200px;
            background: var(--bg);
            transition: all var(--transition);
            color: var(--text-main);
            outline: none;
        }
        .filter-search input:focus {
            border-color: var(--primary);
            background: var(--card-bg);
            box-shadow: 0 0 0 3px rgba(26, 95, 201, 0.12);
        }

        /* Compatibility Matrix */
        .compat-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
            margin-top: 32px;
        }
        .compat-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 18px;
            transition: all var(--transition);
            position: relative;
        }
        .compat-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
            border-color: #cfdceb;
        }
        .compat-icon {
            width: 48px;
            height: 48px;
            background: var(--light-blue);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            flex-shrink: 0;
            color: var(--primary);
            font-weight: 700;
        }
        .compat-info {
            flex: 1 1 200px;
            min-width: 0;
        }
        .compat-info h3 {
            font-size: 16px;
            margin-bottom: 4px;
            color: var(--secondary);
        }
        .compat-info .compat-meta {
            font-size: 13px;
            color: var(--text-light);
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }
        .compat-info .compat-meta span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .compat-status {
            flex: 0 0 auto;
            display: inline-flex;
            align-items: center;
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
            white-space: nowrap;
            letter-spacing: 0.3px;
        }
        .compat-status.full {
            background: #E6F7F0;
            color: #0F7B55;
            border: 1px solid #B8E6D3;
        }
        .compat-status.basic {
            background: #FFF7E6;
            color: #A66D00;
            border: 1px solid #F0D99E;
        }
        .compat-status.config {
            background: #EAF2FB;
            color: #1259B2;
            border: 1px solid #C4D8EE;
        }
        .compat-status.testing {
            background: #F0F3F8;
            color: #5C6E86;
            border: 1px solid #D8DFE8;
        }
        .compat-status.unsupported {
            background: #FDECEA;
            color: #B33A2A;
            border: 1px solid #F0C4BD;
        }
        .compat-metrics {
            flex: 0 0 auto;
            display: flex;
            gap: 16px;
            text-align: center;
        }
        .compat-metric {
            display: flex;
            flex-direction: column;
            align-items: center;
        }
        .compat-metric .metric-value {
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
        }
        .compat-metric .metric-label {
            font-size: 11px;
            color: var(--text-light);
        }
        .compat-action {
            flex: 0 0 auto;
        }
        .btn-outline-sm {
            display: inline-flex;
            align-items: center;
            padding: 6px 14px;
            border-radius: var(--radius-sm);
            font-size: 12px;
            font-weight: 500;
            color: var(--primary);
            background: transparent;
            border: 1px solid var(--primary);
            text-decoration: none;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .btn-outline-sm:hover {
            background: var(--light-blue);
            color: var(--primary-dark);
            border-color: var(--primary-dark);
            text-decoration: none;
        }

        /* Legend */
        .legend-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
            padding: 16px 0;
            margin-top: 24px;
            border-top: 1px solid var(--border);
        }
        .legend-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--neutral);
        }
        .legend-dot {
            width: 12px;
            height: 12px;
            border-radius: 50%;
            flex-shrink: 0;
        }
        .legend-dot.full {
            background: #1B9B6C;
        }
        .legend-dot.basic {
            background: #C78A00;
        }
        .legend-dot.config {
            background: #1A5FC9;
        }
        .legend-dot.testing {
            background: #8A9BB5;
        }
        .legend-dot.unsupported {
            background: #C94B3B;
        }

        /* Deep Analysis Cards */
        .analysis-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
            margin-top: 32px;
        }
        .analysis-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .analysis-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }
        .analysis-card .analysis-img {
            height: 180px;
            overflow: hidden;
            position: relative;
            background: var(--light-blue);
        }
        .analysis-card .analysis-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .analysis-card .analysis-body {
            padding: 20px 24px 24px;
        }
        .analysis-card .analysis-body h3 {
            font-size: 18px;
            margin-bottom: 8px;
            color: var(--secondary);
        }
        .analysis-card .analysis-body p {
            font-size: 14px;
            color: var(--neutral);
            line-height: 1.7;
            margin-bottom: 14px;
        }
        .analysis-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .tag {
            display: inline-flex;
            align-items: center;
            padding: 4px 10px;
            border-radius: 12px;
            font-size: 12px;
            font-weight: 500;
            background: var(--bg);
            color: var(--neutral);
            border: 1px solid var(--border);
        }
        .tag-highlight {
            background: var(--light-blue);
            color: var(--primary);
            border-color: #C4D8EE;
        }

        /* Optimization Tips */
        .tips-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 32px;
        }
        .tip-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 20px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            border-left: 3px solid var(--primary);
        }
        .tip-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }
        .tip-card h4 {
            font-size: 16px;
            margin-bottom: 8px;
            color: var(--secondary);
        }
        .tip-card p {
            font-size: 13px;
            color: var(--neutral);
            line-height: 1.6;
            margin-bottom: 0;
        }

        /* FAQ */
        .faq-list {
            max-width: 820px;
            margin: 32px auto 0;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-lg);
        }
        .faq-item.active {
            border-left: 3px solid var(--primary);
        }
        .faq-question {
            padding: 18px 20px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            color: var(--secondary);
            font-size: 15px;
            transition: all var(--transition);
            user-select: none;
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            font-family: inherit;
            line-height: 1.4;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 18px;
            transition: transform var(--transition);
            font-weight: 400;
        }
        .faq-item.active .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
            padding: 0 20px;
        }
        .faq-item.active .faq-answer {
            max-height: 400px;
            padding: 0 20px 18px;
        }
        .faq-answer p {
            font-size: 14px;
            color: var(--neutral);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* CTA Form */
        .cta-section {
            background: var(--light-blue);
            padding: 64px 0;
        }
        .cta-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 36px 40px;
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
            align-items: flex-start;
        }
        .cta-left {
            flex: 1 1 300px;
            min-width: 0;
        }
        .cta-left h2 {
            font-size: 24px;
            margin-bottom: 12px;
            color: var(--secondary);
        }
        .cta-left p {
            font-size: 14px;
            color: var(--neutral);
            line-height: 1.7;
            margin-bottom: 0;
        }
        .cta-list {
            list-style: none;
            margin-top: 16px;
        }
        .cta-list li {
            position: relative;
            padding-left: 24px;
            margin-bottom: 8px;
            font-size: 14px;
            color: var(--neutral);
            line-height: 1.5;
        }
        .cta-list li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 6px;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--primary);
        }
        .cta-form {
            flex: 1 1 340px;
            min-width: 0;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .form-group {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }
        .form-group label {
            font-size: 14px;
            font-weight: 500;
            color: var(--secondary);
        }
        .form-group label .required {
            color: var(--danger);
            margin-left: 4px;
        }
        .form-group input,
        .form-group select,
        .form-group textarea {
            padding: 10px 14px;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            font-size: 14px;
            background: var(--bg);
            transition: all var(--transition);
            color: var(--text-main);
            outline: none;
            width: 100%;
            font-family: inherit;
            line-height: 1.5;
        }
        .form-group input:focus,
        .form-group select:focus,
        .form-group textarea:focus {
            border-color: var(--primary);
            background: var(--card-bg);
            box-shadow: 0 0 0 3px rgba(26, 95, 201, 0.1);
        }
        .form-group textarea {
            min-height: 80px;
            resize: vertical;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 24px;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: #fff;
            text-decoration: none;
            font-size: 15px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            min-height: 46px;
            letter-spacing: 0.3px;
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            text-decoration: none;
        }
        .btn-primary:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        .btn-primary:active {
            transform: translateY(1px);
        }

        /* Footer */
        .site-footer {
            background: var(--secondary);
            color: rgba(255, 255, 255, 0.75);
            padding: 48px 0 24px;
            margin-top: auto;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.12);
        }
        .footer-brand h3 {
            color: #fff;
            font-size: 20px;
            margin-bottom: 10px;
        }
        .footer-brand p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            line-height: 1.6;
            margin-bottom: 0;
            max-width: 320px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 15px;
            margin-bottom: 14px;
            font-weight: 600;
        }
        .footer-col a {
            display: block;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            text-decoration: none;
            margin-bottom: 10px;
            transition: color var(--transition);
            line-height: 1.5;
        }
        .footer-col a:hover {
            color: #fff;
            text-decoration: underline;
        }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            padding-top: 20px;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.65);
            text-decoration: none;
            transition: color var(--transition);
        }
        .footer-bottom a:hover {
            color: #fff;
            text-decoration: underline;
        }
        .footer-bottom span {
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .container {
                padding: 0 20px;
            }
            .header-stats {
                flex-basis: 260px;
            }
            .tips-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .header-top {
                height: auto;
                flex-wrap: wrap;
                padding: 10px 0;
                gap: 8px;
            }
            .nav-chips {
                order: 3;
                width: 100%;
                flex-basis: 100%;
                padding-bottom: 6px;
            }
            .header-cta {
                margin-left: auto;
            }
            .logo {
                font-size: 17px;
            }
            .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 14px;
                border-radius: 6px;
            }
            .header-cta {
                padding: 7px 14px;
                font-size: 12px;
                min-height: 34px;
            }
            .nav-chip {
                padding: 6px 12px;
                font-size: 12px;
            }
            .page-header-compact {
                padding: 36px 0 28px;
            }
            .page-header-inner {
                flex-direction: column;
                gap: 20px;
            }
            .page-header-text h1 {
                font-size: 28px;
            }
            .header-stats {
                flex-basis: auto;
                width: 100%;
                grid-template-columns: repeat(2, 1fr);
            }
            .compat-card {
                padding: 16px 18px;
                gap: 12px;
            }
            .compat-icon {
                width: 40px;
                height: 40px;
                font-size: 20px;
            }
            .compat-info h3 {
                font-size: 15px;
            }
            .compat-metrics {
                flex-wrap: wrap;
                gap: 8px;
            }
            .analysis-grid {
                grid-template-columns: 1fr;
            }
            .tips-grid {
                grid-template-columns: 1fr;
            }
            .cta-card {
                padding: 24px;
                flex-direction: column;
                gap: 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .filter-bar {
                padding: 16px;
            }
            .filter-search input {
                min-width: 100%;
                width: 100%;
            }
            .filter-search {
                flex-wrap: wrap;
                width: 100%;
            }
            h1 {
                font-size: 28px;
            }
            h2 {
                font-size: 22px;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 16px;
            }
            .section {
                padding: 48px 0;
            }
            .page-header-text h1 {
                font-size: 24px;
            }
            .header-stats {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }
            .header-stat {
                padding: 12px 10px;
            }
            .header-stat .stat-number {
                font-size: 22px;
            }
            .compat-card {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
            }
            .compat-icon {
                width: 36px;
                height: 36px;
                font-size: 18px;
                border-radius: 6px;
            }
            .compat-metrics {
                width: 100%;
                justify-content: flex-start;
                gap: 12px;
            }
            .compat-action {
                width: 100%;
            }
            .compat-action .btn-outline-sm {
                width: 100%;
                justify-content: center;
            }
            .legend-bar {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .cta-card {
                padding: 20px 16px;
            }
            .form-group input,
            .form-group select,
            .form-group textarea {
                font-size: 16px;
            }
            .btn-primary {
                width: 100%;
            }
        }

/* roulang page: category4 */
:root {
  --primary: #1A5FC9;
  --primary-dark: #1259B2;
  --secondary: #0B2B50;
  --neutral: #5C6E86;
  --bg: #F5F8FC;
  --card-bg: #FFFFFF;
  --light-blue: #EAF2FB;
  --border: #E3E9F1;
  --shadow-sm: 0 6px 16px rgba(15, 36, 67, 0.06);
  --shadow-lg: 0 12px 28px rgba(15, 36, 67, 0.12);
  --radius-sm: 8px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
  --transition: 0.2s ease;
  --section-padding: 72px 0;
  --container-max: 1200px;
}
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}
body {
  font-family: var(--font-family);
  font-size: 15px;
  line-height: 1.75;
  color: #2d3a4a;
  background-color: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  margin: 0;
}
*, *::before, *::after {
  box-sizing: border-box;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
a {
  color: var(--primary);
  text-decoration: underline;
  transition: color var(--transition);
}
a:hover {
  color: var(--primary-dark);
}
button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
}
h1, h2, h3, h4 {
  margin: 0 0 12px;
  line-height: 1.35;
  color: var(--secondary);
  font-weight: 700;
}
p {
  margin: 0 0 16px;
}
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}
/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 8px rgba(15, 36, 67, 0.04);
}
.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 20px;
  flex-wrap: nowrap;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--secondary);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: 0.5px;
  white-space: nowrap;
  flex-shrink: 0;
}
.logo:hover {
  color: var(--primary);
}
.logo-icon {
  width: 36px;
  height: 36px;
  background: var(--primary);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  flex-shrink: 0;
}
.nav-chips {
  display: flex;
  align-items: center;
  gap: 6px;
  overflow-x: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
  -webkit-overflow-scrolling: touch;
  padding: 4px 0;
  flex: 1;
  min-width: 0;
}
.nav-chips::-webkit-scrollbar {
  height: 4px;
}
.nav-chips::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 4px;
}
.nav-chip {
  display: inline-flex;
  align-items: center;
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 500;
  color: var(--neutral);
  background: transparent;
  border: 1px solid transparent;
  text-decoration: none;
  white-space: nowrap;
  transition: all var(--transition);
  flex-shrink: 0;
}
.nav-chip:hover {
  background: var(--light-blue);
  color: var(--primary);
}
.nav-chip.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  text-decoration: none;
}
.header-cta {
  display: inline-flex;
  align-items: center;
  padding: 9px 18px;
  border-radius: 8px;
  background: var(--primary);
  color: #fff;
  text-decoration: none;
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
  flex-shrink: 0;
  transition: all var(--transition);
  border: none;
  min-height: 38px;
}
.header-cta:hover {
  background: var(--primary-dark);
  color: #fff;
  text-decoration: none;
}
.header-cta:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}
/* Page Banner */
.page-banner {
  background: linear-gradient(135deg, #f0f6fe 0%, #f8fbff 45%, #eef4fc 100%);
  padding: 48px 0 40px;
  border-bottom: 1px solid var(--border);
}
.breadcrumb {
  font-size: 13px;
  color: var(--neutral);
  margin-bottom: 16px;
}
.breadcrumb a {
  color: var(--neutral);
  text-decoration: none;
}
.breadcrumb a:hover {
  color: var(--primary);
}
.breadcrumb .sep {
  margin: 0 8px;
  color: #9aa7b8;
}
.page-banner h1 {
  font-size: 34px;
  margin-bottom: 10px;
}
.page-banner .lead {
  font-size: 16px;
  color: var(--neutral);
  max-width: 780px;
  margin-bottom: 20px;
}
.filter-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
}
.filter-chip {
  display: inline-flex;
  align-items: center;
  padding: 7px 16px;
  border-radius: 999px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  color: var(--neutral);
  font-size: 13px;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}
.filter-chip:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--light-blue);
}
.filter-chip.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}
/* Section Base */
.section {
  padding: var(--section-padding);
}
.section-title {
  font-size: 26px;
  margin-bottom: 8px;
}
.section-sub {
  color: var(--neutral);
  font-size: 15px;
  margin-bottom: 32px;
  max-width: 720px;
}
/* Featured Version */
.featured-version {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  transition: box-shadow var(--transition);
}
.featured-version:hover {
  box-shadow: var(--shadow-lg);
}
.featured-cover {
  min-height: 320px;
  background-size: cover;
  background-position: center;
  position: relative;
}
.featured-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.featured-body {
  padding: 32px;
}
.featured-tag {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 999px;
  background: #e8f3e8;
  color: #2e7d32;
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 16px;
}
.featured-body h2 {
  font-size: 24px;
  margin-bottom: 12px;
}
.featured-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 13px;
  color: var(--neutral);
  margin-bottom: 16px;
}
.featured-meta span {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.featured-body .desc {
  margin-bottom: 20px;
  color: #2d3a4a;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 22px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition);
  border: none;
  min-height: 42px;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--primary-dark);
  color: #fff;
  text-decoration: none;
  box-shadow: 0 4px 12px rgba(26, 95, 201, 0.25);
}
.btn-secondary {
  background: #fff;
  color: var(--primary);
  border: 1px solid var(--primary);
}
.btn-secondary:hover {
  background: var(--light-blue);
  text-decoration: none;
}
.btn:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}
/* Timeline */
.timeline {
  position: relative;
  padding-left: 28px;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 8px;
  top: 4px;
  bottom: 4px;
  width: 2px;
  background: var(--border);
  border-radius: 1px;
}
.timeline-item {
  position: relative;
  padding-bottom: 28px;
}
.timeline-item:last-child {
  padding-bottom: 0;
}
.timeline-item::before {
  content: '';
  position: absolute;
  left: -24px;
  top: 5px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--primary);
  border: 3px solid var(--card-bg);
  box-shadow: 0 0 0 2px var(--primary);
}
.timeline-item .tl-date {
  font-size: 13px;
  color: var(--neutral);
  margin-bottom: 4px;
}
.timeline-item .tl-version {
  font-size: 20px;
  font-weight: 700;
  color: var(--secondary);
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
.timeline-item .tl-desc {
  color: #2d3a4a;
  margin-bottom: 8px;
  max-width: 800px;
}
.timeline-item .tl-link {
  font-size: 13px;
  font-weight: 600;
}
/* Version Grid */
.version-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.version-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: box-shadow var(--transition), transform var(--transition);
  display: flex;
  flex-direction: column;
}
.version-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}
.version-card .vc-cover {
  height: 160px;
  background-size: cover;
  background-position: center;
  position: relative;
}
.version-card .vc-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.version-card .vc-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
  color: #fff;
  background: var(--primary);
}
.version-card .vc-badge.preview {
  background: #f59e0b;
  color: #fff;
}
.version-card .vc-badge.legacy {
  background: var(--neutral);
}
.version-card .vc-body {
  padding: 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.version-card .vc-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--secondary);
  margin-bottom: 4px;
}
.version-card .vc-date {
  font-size: 12px;
  color: var(--neutral);
  margin-bottom: 10px;
}
.version-card .vc-desc {
  font-size: 14px;
  color: #2d3a4a;
  margin-bottom: 14px;
  flex: 1;
}
.version-card .vc-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 14px;
}
.version-card .vc-tags span {
  font-size: 12px;
  padding: 3px 8px;
  border-radius: 4px;
  background: var(--light-blue);
  color: var(--primary);
}
.version-card .vc-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
.version-card .vc-size {
  font-size: 12px;
  color: var(--neutral);
}
.version-card .vc-link {
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  color: var(--primary);
}
.version-card .vc-link:hover {
  color: var(--primary-dark);
  text-decoration: underline;
}
/* Compare Section */
.compare-section {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: 32px;
  overflow: hidden;
}
.compare-table {
  display: block;
  width: 100%;
}
.compare-header {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr 1fr;
  gap: 12px;
  padding: 14px 16px;
  background: var(--light-blue);
  border-radius: var(--radius-sm);
  font-weight: 700;
  color: var(--secondary);
  font-size: 14px;
  margin-bottom: 8px;
}
.compare-row {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr 1fr;
  gap: 12px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
  color: #2d3a4a;
  align-items: center;
}
.compare-row:last-child {
  border-bottom: none;
}
.compare-row .col-label {
  font-weight: 600;
  color: var(--secondary);
}
.compare-row .highlight {
  color: var(--primary);
  font-weight: 600;
}
.compare-row .tag {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  background: var(--light-blue);
  color: var(--primary);
  font-size: 11px;
  font-weight: 600;
}
/* Upgrade Tips */
.upgrade-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: center;
}
.upgrade-img {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.upgrade-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.upgrade-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.upgrade-list li {
  position: relative;
  padding-left: 24px;
  margin-bottom: 14px;
  color: #2d3a4a;
}
.upgrade-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary);
}
/* FAQ */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.faq-item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition);
}
.faq-item:hover {
  box-shadow: var(--shadow-lg);
}
.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px;
  cursor: pointer;
  font-weight: 600;
  color: var(--secondary);
  font-size: 15px;
  list-style: none;
  gap: 16px;
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-item summary .faq-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--light-blue);
  color: var(--primary);
  font-size: 16px;
  transition: transform var(--transition);
}
.faq-item[open] summary .faq-icon {
  transform: rotate(45deg);
}
.faq-item .faq-answer {
  padding: 0 20px 18px;
  color: #2d3a4a;
  font-size: 14px;
  border-left: 3px solid var(--primary);
  margin-left: 20px;
  padding-left: 16px;
}
/* Form Section */
.form-section {
  background: var(--light-blue);
  border-radius: var(--radius-lg);
  padding: 40px;
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 40px;
  align-items: stretch;
}
.form-value-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.form-value-list li {
  position: relative;
  padding-left: 24px;
  margin-bottom: 14px;
  color: var(--secondary);
  font-size: 14px;
}
.form-value-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  top: 0;
  color: var(--primary);
  font-weight: 700;
}
.form-card {
  background: var(--card-bg);
  border-radius: var(--radius-md);
  padding: 28px;
  box-shadow: var(--shadow-sm);
}
.form-group {
  margin-bottom: 18px;
}
.form-group label {
  display: block;
  font-size: 13px;
  color: var(--neutral);
  margin-bottom: 6px;
  font-weight: 500;
}
.form-group label .required {
  color: #e04e5f;
  margin-left: 2px;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: #fbfdff;
  font-size: 14px;
  color: #2d3a4a;
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(26, 95, 201, 0.12);
  background: #fff;
}
.form-group textarea {
  min-height: 90px;
  resize: vertical;
}
.form-submit {
  width: 100%;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  padding: 12px 20px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  min-height: 46px;
}
.form-submit:hover {
  background: var(--primary-dark);
  box-shadow: 0 4px 12px rgba(26, 95, 201, 0.25);
}
.form-submit:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}
/* Footer */
.site-footer {
  background: var(--secondary);
  color: #c6d2e0;
  padding: 48px 0 24px;
  margin-top: 64px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 32px;
}
.footer-brand h3 {
  color: #fff;
  font-size: 20px;
  margin-bottom: 12px;
}
.footer-brand p {
  font-size: 13px;
  color: #aab8c9;
  line-height: 1.7;
  margin-bottom: 0;
}
.footer-col h4 {
  color: #fff;
  font-size: 14px;
  margin-bottom: 12px;
}
.footer-col a {
  display: block;
  color: #aab8c9;
  text-decoration: none;
  font-size: 13px;
  margin-bottom: 8px;
  transition: color var(--transition);
}
.footer-col a:hover {
  color: #fff;
  text-decoration: underline;
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-top: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 12px;
  color: #8b9ab0;
}
.footer-bottom span {
  white-space: nowrap;
}
.footer-bottom a {
  color: #8b9ab0;
  text-decoration: none;
  transition: color var(--transition);
}
.footer-bottom a:hover {
  color: #fff;
  text-decoration: underline;
}
/* Responsive */
@media (max-width: 1024px) {
  .version-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .compare-header,
  .compare-row {
    grid-template-columns: 1.3fr 1fr 1fr 1fr;
    font-size: 12px;
  }
  .form-section {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .featured-version {
    grid-template-columns: 1fr;
  }
  .featured-cover {
    min-height: 200px;
  }
  .upgrade-grid {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 768px) {
  .header-top {
    height: auto;
    flex-wrap: wrap;
    padding: 10px 0;
    gap: 8px;
  }
  .nav-chips {
    order: 3;
    width: 100%;
    flex-basis: 100%;
    padding-bottom: 6px;
  }
  .header-cta {
    margin-left: auto;
  }
  .logo {
    font-size: 17px;
  }
  .logo-icon {
    width: 30px;
    height: 30px;
    font-size: 14px;
    border-radius: 6px;
  }
  .header-cta {
    padding: 7px 14px;
    font-size: 12px;
    min-height: 34px;
  }
  .nav-chip {
    padding: 6px 12px;
    font-size: 12px;
  }
  .section {
    padding: 48px 0;
  }
  .page-banner h1 {
    font-size: 24px;
  }
  .featured-body {
    padding: 20px;
  }
  .version-grid {
    grid-template-columns: 1fr;
  }
  .compare-header,
  .compare-row {
    grid-template-columns: 1.3fr 1fr 1fr 1fr;
    font-size: 11px;
    padding: 10px 8px;
    gap: 6px;
  }
  .form-section {
    padding: 24px;
  }
  .form-card {
    padding: 20px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }
}
@media (max-width: 520px) {
  .container {
    padding: 0 12px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 6px;
  }
  .compare-header,
  .compare-row {
    font-size: 10px;
    padding: 8px 4px;
    gap: 4px;
  }
  .filter-chips {
    gap: 6px;
  }
  .filter-chip {
    padding: 6px 12px;
    font-size: 12px;
  }
  .timeline {
    padding-left: 22px;
  }
  .timeline-item::before {
    left: -19px;
    width: 10px;
    height: 10px;
  }
  .faq-item summary {
    padding: 14px 16px;
    font-size: 14px;
  }
  .faq-item .faq-answer {
    margin-left: 16px;
    padding: 0 14px 14px;
  }
}

/* roulang page: category5 */
:root {
            --primary: #1A5FC9;
            --primary-dark: #1259B2;
            --secondary: #0B2B50;
            --neutral: #5C6E86;
            --bg: #F5F8FC;
            --card-bg: #FFFFFF;
            --light-blue: #EAF2FB;
            --border: #E3E9F1;
            --shadow-sm: 0 6px 16px rgba(15, 36, 67, 0.06);
            --shadow-lg: 0 12px 28px rgba(15, 36, 67, 0.12);
            --radius-sm: 8px;
            --radius-md: 10px;
            --radius-lg: 14px;
            --font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --transition: 0.2s ease;
            --section-padding: 72px 0;
            --container-max: 1200px;
        }

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

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

        body {
            font-family: var(--font-family);
            font-size: 15px;
            line-height: 1.75;
            color: #2d3a4a;
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
        }

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

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

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

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

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Header & Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--card-bg);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 1px 8px rgba(15, 36, 67, 0.04);
        }

        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            gap: 20px;
            flex-wrap: nowrap;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
            color: var(--secondary);
            font-weight: 700;
            font-size: 20px;
            letter-spacing: 0.5px;
            white-space: nowrap;
            flex-shrink: 0;
        }

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

        .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--primary);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .nav-chips {
            display: flex;
            align-items: center;
            gap: 6px;
            overflow-x: auto;
            scrollbar-width: thin;
            scrollbar-color: var(--border) transparent;
            -webkit-overflow-scrolling: touch;
            padding: 4px 0;
            flex: 1;
            min-width: 0;
        }

        .nav-chips::-webkit-scrollbar {
            height: 4px;
        }

        .nav-chips::-webkit-scrollbar-thumb {
            background: var(--border);
            border-radius: 4px;
        }

        .nav-chip {
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            border-radius: 8px;
            font-size: 13px;
            font-weight: 500;
            color: var(--neutral);
            background: transparent;
            border: 1px solid transparent;
            text-decoration: none;
            white-space: nowrap;
            transition: all var(--transition);
            flex-shrink: 0;
            cursor: pointer;
        }

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

        .nav-chip.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            text-decoration: none;
        }

        .header-cta {
            display: inline-flex;
            align-items: center;
            padding: 9px 18px;
            border-radius: 8px;
            background: var(--primary);
            color: #fff;
            text-decoration: none;
            font-size: 13px;
            font-weight: 600;
            white-space: nowrap;
            flex-shrink: 0;
            transition: all var(--transition);
            border: none;
            min-height: 38px;
            cursor: pointer;
        }

        .header-cta:hover {
            background: var(--primary-dark);
            color: #fff;
            text-decoration: none;
        }

        .header-cta:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        /* Page Hero / Compact Header */
        .page-hero {
            background: linear-gradient(135deg, #f0f6fe 0%, #f8fbff 45%, #eef4fc 100%);
            padding: 48px 0 40px;
            border-bottom: 1px solid var(--border);
            position: relative;
            overflow: hidden;
        }

        .page-hero::after {
            content: '';
            position: absolute;
            bottom: -30px;
            right: -30px;
            width: 220px;
            height: 220px;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.08;
            border-radius: 50%;
            pointer-events: none;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--neutral);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }

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

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

        .breadcrumb .separator {
            color: #a0aec0;
            user-select: none;
        }

        .breadcrumb .current {
            color: var(--primary);
            font-weight: 500;
        }

        .page-hero h1 {
            font-size: 34px;
            font-weight: 700;
            color: var(--secondary);
            line-height: 1.35;
            margin-bottom: 12px;
            letter-spacing: 0.3px;
        }

        .page-hero .hero-desc {
            font-size: 16px;
            color: var(--neutral);
            max-width: 780px;
            line-height: 1.8;
            margin-bottom: 24px;
        }

        .hero-search-box {
            display: flex;
            align-items: center;
            gap: 12px;
            background: var(--card-bg);
            border: 2px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 6px 6px 6px 20px;
            max-width: 640px;
            box-shadow: var(--shadow-sm);
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        .hero-search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(26, 95, 201, 0.12), var(--shadow-sm);
        }

        .hero-search-box .search-icon {
            color: var(--neutral);
            flex-shrink: 0;
            font-size: 18px;
            line-height: 1;
        }

        .hero-search-box input {
            flex: 1;
            border: none;
            outline: none;
            font-size: 15px;
            color: #2d3a4a;
            background: transparent;
            padding: 10px 0;
            min-width: 0;
        }

        .hero-search-box input::placeholder {
            color: #a0aec0;
        }

        .hero-search-box button {
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 8px;
            padding: 10px 24px;
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            transition: background var(--transition);
            white-space: nowrap;
            flex-shrink: 0;
        }

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

        .hero-search-box button:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        /* Error Code Tags */
        .error-tags-section {
            padding: 40px 0 32px;
            background: var(--card-bg);
            border-bottom: 1px solid var(--border);
        }

        .section-heading {
            display: flex;
            align-items: baseline;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 20px;
        }

        .section-heading h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--secondary);
            line-height: 1.35;
        }

        .section-heading .heading-note {
            font-size: 14px;
            color: var(--neutral);
        }

        .error-tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .error-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 18px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            background: var(--card-bg);
            font-size: 13px;
            font-weight: 500;
            color: var(--neutral);
            cursor: pointer;
            transition: all var(--transition);
            user-select: none;
            text-decoration: none;
        }

        .error-tag:hover {
            border-color: var(--primary);
            background: var(--light-blue);
            color: var(--primary);
        }

        .error-tag .tag-code {
            font-weight: 700;
            color: var(--primary);
            font-family: 'Courier New', monospace;
            letter-spacing: 0.5px;
        }

        .error-tag .tag-label {
            white-space: nowrap;
        }

        .error-tag.active-tag {
            border-color: var(--primary);
            background: var(--primary);
            color: #fff;
        }

        .error-tag.active-tag .tag-code {
            color: #fff;
        }

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

        .faq-search-filter {
            margin-bottom: 28px;
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }

        .faq-search-filter .filter-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--secondary);
            white-space: nowrap;
        }

        .faq-search-filter .filter-chip {
            padding: 7px 16px;
            border-radius: 20px;
            border: 1px solid var(--border);
            background: var(--card-bg);
            font-size: 13px;
            color: var(--neutral);
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
            text-decoration: none;
        }

        .faq-search-filter .filter-chip:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--light-blue);
        }

        .faq-search-filter .filter-chip.active-filter {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
        }

        .faq-group {
            margin-bottom: 32px;
        }

        .faq-group-title {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 16px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--light-blue);
        }

        .faq-group-title .group-icon {
            width: 32px;
            height: 32px;
            background: var(--light-blue);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            color: var(--primary);
        }

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

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

        .faq-item.faq-open {
            border-left: 3px solid var(--primary);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 20px;
            background: none;
            border: none;
            text-align: left;
            font-size: 15px;
            font-weight: 600;
            color: var(--secondary);
            cursor: pointer;
            transition: background var(--transition);
            line-height: 1.6;
        }

        .faq-question:hover {
            background: var(--light-blue);
        }

        .faq-question:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: -2px;
        }

        .faq-question .faq-toggle-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 6px;
            background: var(--light-blue);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            color: var(--primary);
            transition: transform var(--transition);
            font-weight: 700;
            line-height: 1;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 20px;
        }

        .faq-item.faq-open .faq-answer {
            max-height: 500px;
            padding: 0 20px 20px;
        }

        .faq-answer p {
            font-size: 14px;
            color: var(--neutral);
            line-height: 1.85;
            border-top: 1px solid var(--border);
            padding-top: 14px;
        }

        .faq-answer .answer-tip {
            display: inline-block;
            margin-top: 10px;
            font-size: 13px;
            color: var(--primary);
            background: var(--light-blue);
            padding: 6px 12px;
            border-radius: 6px;
            font-weight: 500;
        }

        /* Troubleshooting Steps */
        .steps-section {
            padding: var(--section-padding);
            background: var(--card-bg);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .steps-grid {
            display: grid;
            grid-template-columns: 1fr 1.4fr;
            gap: 40px;
            align-items: start;
        }

        .steps-content h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .steps-content .steps-desc {
            font-size: 15px;
            color: var(--neutral);
            margin-bottom: 24px;
            line-height: 1.8;
        }

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

        .step-item {
            display: flex;
            gap: 14px;
            align-items: flex-start;
        }

        .step-number {
            flex-shrink: 0;
            width: 36px;
            height: 36px;
            background: var(--primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 14px;
        }

        .step-item .step-body h3 {
            font-size: 15px;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 4px;
        }

        .step-item .step-body p {
            font-size: 14px;
            color: var(--neutral);
            line-height: 1.7;
        }

        .steps-visual {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            min-height: 320px;
        }

        .steps-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 320px;
        }

        .steps-visual .visual-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            background: linear-gradient(to top, rgba(11, 43, 80, 0.85), transparent);
            padding: 28px 20px 18px;
            color: #fff;
        }

        .steps-visual .visual-overlay h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 4px;
        }

        .steps-visual .visual-overlay p {
            font-size: 13px;
            opacity: 0.9;
        }

        /* Diagnostic Resources */
        .resources-section {
            padding: var(--section-padding);
            background: var(--bg);
        }

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

        .resource-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

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

        .resource-card .resource-icon {
            width: 44px;
            height: 44px;
            background: var(--light-blue);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--primary);
            margin-bottom: 4px;
        }

        .resource-card h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--secondary);
            line-height: 1.4;
        }

        .resource-card p {
            font-size: 14px;
            color: var(--neutral);
            line-height: 1.75;
            flex: 1;
        }

        .resource-card .resource-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: color var(--transition);
        }

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

        /* CTA Form */
        .cta-section {
            padding: var(--section-padding);
            background: var(--light-blue);
        }

        .cta-wrapper {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            padding: 40px;
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 36px;
            align-items: start;
            border: 1px solid var(--border);
        }

        .cta-info h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 14px;
            line-height: 1.4;
        }

        .cta-info p {
            font-size: 15px;
            color: var(--neutral);
            margin-bottom: 20px;
            line-height: 1.8;
        }

        .cta-value-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .cta-value-list li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--secondary);
            font-weight: 500;
        }

        .cta-value-list li::before {
            content: '✓';
            width: 22px;
            height: 22px;
            background: var(--primary);
            color: #fff;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            flex-shrink: 0;
        }

        .cta-form {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 14px;
        }

        .form-group {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .form-group label {
            font-size: 14px;
            font-weight: 600;
            color: var(--secondary);
        }

        .form-group label .required {
            color: #e53e3e;
            margin-left: 2px;
        }

        .form-group input,
        .form-group select,
        .form-group textarea {
            padding: 10px 14px;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            font-size: 14px;
            color: #2d3a4a;
            background: #fafcfe;
            transition: border-color var(--transition), box-shadow var(--transition);
            outline: none;
            width: 100%;
        }

        .form-group input:focus,
        .form-group select:focus,
        .form-group textarea:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(26, 95, 201, 0.12);
            background: #fff;
        }

        .form-group textarea {
            resize: vertical;
            min-height: 90px;
        }

        .form-submit-btn {
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: var(--radius-sm);
            padding: 12px 28px;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: background var(--transition);
            align-self: flex-end;
            min-width: 160px;
        }

        .form-submit-btn:hover {
            background: var(--primary-dark);
        }

        .form-submit-btn:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .form-submit-btn:active {
            background: #0d4fa8;
            box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.15);
        }

        /* Footer */
        .site-footer {
            background: var(--secondary);
            color: rgba(255, 255, 255, 0.85);
            padding: 48px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 32px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.12);
            margin-bottom: 24px;
        }

        .footer-brand h3 {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }

        .footer-brand p {
            font-size: 13px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.7);
            max-width: 300px;
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
        }

        .footer-col a {
            display: block;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
            text-decoration: none;
            margin-bottom: 8px;
            transition: color var(--transition);
        }

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

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.5);
            align-items: center;
            justify-content: space-between;
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.7);
            text-decoration: none;
            transition: color var(--transition);
        }

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

        /* Responsive */
        @media (max-width: 1024px) {
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .resources-grid {
                grid-template-columns: 1fr 1fr;
            }
            .cta-wrapper {
                grid-template-columns: 1fr;
                padding: 28px;
                gap: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 768px) {
            .header-top {
                height: auto;
                flex-wrap: wrap;
                padding: 10px 0;
                gap: 8px;
            }
            .nav-chips {
                order: 3;
                width: 100%;
                flex-basis: 100%;
                padding-bottom: 6px;
            }
            .header-cta {
                margin-left: auto;
            }
            .logo {
                font-size: 17px;
            }
            .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 14px;
                border-radius: 6px;
            }
            .header-cta {
                padding: 7px 14px;
                font-size: 12px;
                min-height: 34px;
            }
            .nav-chip {
                padding: 6px 12px;
                font-size: 12px;
            }
            .page-hero {
                padding: 32px 0 28px;
            }
            .page-hero h1 {
                font-size: 24px;
            }
            .page-hero .hero-desc {
                font-size: 14px;
            }
            .hero-search-box {
                flex-wrap: wrap;
                padding: 12px;
                gap: 8px;
            }
            .hero-search-box input {
                flex: 1 1 100%;
                padding: 8px 0;
            }
            .hero-search-box button {
                width: 100%;
                text-align: center;
                justify-content: center;
            }
            .section-heading {
                flex-direction: column;
                gap: 6px;
            }
            .section-heading h2 {
                font-size: 20px;
            }
            .error-tag {
                padding: 8px 14px;
                font-size: 12px;
            }
            .faq-question {
                font-size: 14px;
                padding: 15px 16px;
            }
            .faq-answer p {
                font-size: 13px;
            }
            .resources-grid {
                grid-template-columns: 1fr;
            }
            .form-row {
                grid-template-columns: 1fr;
            }
            .form-submit-btn {
                width: 100%;
                align-self: stretch;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 8px;
                align-items: flex-start;
            }
            .cta-wrapper {
                padding: 20px;
                border-radius: var(--radius-md);
            }
            .steps-visual {
                min-height: 240px;
            }
            .steps-visual img {
                min-height: 240px;
            }
        }

        @media (max-width: 480px) {
            .container {
                padding: 0 14px;
            }
            .page-hero h1 {
                font-size: 22px;
            }
            .breadcrumb {
                font-size: 12px;
            }
            .error-tag-list {
                gap: 6px;
            }
            .error-tag {
                padding: 6px 10px;
                font-size: 11px;
                gap: 5px;
            }
            .error-tag .tag-label {
                font-size: 11px;
            }
            .faq-question {
                gap: 10px;
                padding: 14px 14px;
            }
            .faq-question .faq-toggle-icon {
                width: 24px;
                height: 24px;
                font-size: 14px;
            }
            .step-number {
                width: 30px;
                height: 30px;
                font-size: 12px;
            }
            .cta-value-list li {
                font-size: 13px;
            }
        }

/* roulang page: category6 */
:root {
            --primary: #1A5FC9;
            --primary-dark: #1259B2;
            --secondary: #0B2B50;
            --neutral: #5C6E86;
            --bg: #F5F8FC;
            --card-bg: #FFFFFF;
            --light-blue: #EAF2FB;
            --border: #E3E9F1;
            --shadow-sm: 0 6px 16px rgba(15, 36, 67, 0.06);
            --shadow-lg: 0 12px 28px rgba(15, 36, 67, 0.12);
            --radius-sm: 8px;
            --radius-md: 10px;
            --radius-lg: 14px;
            --font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --transition: 0.2s ease;
            --section-padding: 72px 0;
            --container-max: 1200px;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-family);
            font-size: 15px;
            line-height: 1.75;
            color: #2d3a4a;
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--primary);
            text-decoration: underline;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--card-bg);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 1px 8px rgba(15, 36, 67, 0.04);
        }
        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            gap: 20px;
            flex-wrap: nowrap;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
            color: var(--secondary);
            font-weight: 700;
            font-size: 20px;
            letter-spacing: 0.5px;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .logo:hover {
            color: var(--primary);
        }
        .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--primary);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .nav-chips {
            display: flex;
            align-items: center;
            gap: 6px;
            overflow-x: auto;
            scrollbar-width: thin;
            scrollbar-color: var(--border) transparent;
            -webkit-overflow-scrolling: touch;
            padding: 4px 0;
            flex: 1;
            min-width: 0;
        }
        .nav-chips::-webkit-scrollbar {
            height: 4px;
        }
        .nav-chips::-webkit-scrollbar-thumb {
            background: var(--border);
            border-radius: 4px;
        }
        .nav-chip {
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            border-radius: 8px;
            font-size: 13px;
            font-weight: 500;
            color: var(--neutral);
            background: transparent;
            border: 1px solid transparent;
            text-decoration: none;
            white-space: nowrap;
            transition: all var(--transition);
            flex-shrink: 0;
        }
        .nav-chip:hover {
            background: var(--light-blue);
            color: var(--primary);
        }
        .nav-chip.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            text-decoration: none;
        }
        .header-cta {
            display: inline-flex;
            align-items: center;
            padding: 9px 18px;
            border-radius: 8px;
            background: var(--primary);
            color: #fff;
            text-decoration: none;
            font-size: 13px;
            font-weight: 600;
            white-space: nowrap;
            flex-shrink: 0;
            transition: all var(--transition);
            border: none;
            min-height: 38px;
        }
        .header-cta:hover {
            background: var(--primary-dark);
            color: #fff;
            text-decoration: none;
        }
        .header-cta:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--neutral);
            margin-bottom: 12px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--neutral);
            text-decoration: none;
            transition: color var(--transition);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .separator {
            color: #b0bcc8;
            user-select: none;
        }
        .page-header-section {
            background: var(--card-bg);
            border-bottom: 1px solid var(--border);
            padding: 32px 0 24px;
        }
        .page-title-row {
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
        }
        .page-title-left h1 {
            font-size: 32px;
            line-height: 1.35;
            color: var(--secondary);
            font-weight: 700;
            margin-bottom: 8px;
        }
        .page-title-left p {
            font-size: 15px;
            color: var(--neutral);
            max-width: 680px;
            line-height: 1.75;
        }
        .filter-chips-row {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            margin-top: 20px;
        }
        .filter-chip {
            display: inline-flex;
            align-items: center;
            padding: 7px 16px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
            color: var(--neutral);
            background: var(--bg);
            border: 1px solid var(--border);
            cursor: pointer;
            text-decoration: none;
            white-space: nowrap;
            transition: all var(--transition);
            user-select: none;
        }
        .filter-chip:hover {
            background: var(--light-blue);
            color: var(--primary);
            border-color: var(--primary);
        }
        .filter-chip.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .live-hero-section {
            position: relative;
            padding: 48px 0 56px;
            overflow: hidden;
            background: linear-gradient(135deg, #f0f6fe 0%, #f8fbff 40%, #eef4fc 100%);
        }
        .live-hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 50%;
            height: 100%;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center right;
            opacity: 0.12;
            pointer-events: none;
        }
        .live-hero-grid {
            display: grid;
            grid-template-columns: 1fr 380px;
            gap: 40px;
            align-items: center;
            position: relative;
            z-index: 1;
        }
        .live-hero-info h2 {
            font-size: 26px;
            line-height: 1.4;
            color: var(--secondary);
            font-weight: 700;
            margin-bottom: 12px;
        }
        .live-hero-info .live-badge {
            display: inline-block;
            padding: 3px 12px;
            border-radius: 12px;
            background: #e74c3c;
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 1px;
            margin-bottom: 16px;
        }
        .live-hero-info p {
            font-size: 15px;
            color: var(--neutral);
            margin-bottom: 20px;
            max-width: 560px;
            line-height: 1.75;
        }
        .live-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 24px;
            font-size: 14px;
            color: var(--secondary);
        }
        .live-meta-item {
            display: flex;
            align-items: center;
            gap: 6px;
            font-weight: 500;
        }
        .live-meta-item .icon {
            color: var(--primary);
            font-weight: 700;
        }
        .countdown-box {
            display: flex;
            gap: 12px;
            margin-bottom: 24px;
            flex-wrap: wrap;
        }
        .countdown-unit {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: 10px;
            padding: 10px 16px;
            min-width: 64px;
            text-align: center;
        }
        .countdown-number {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
        }
        .countdown-label {
            font-size: 12px;
            color: var(--neutral);
            margin-top: 4px;
        }
        .subscribe-form {
            display: flex;
            gap: 10px;
            max-width: 420px;
            flex-wrap: wrap;
        }
        .subscribe-form input {
            flex: 1;
            min-width: 200px;
            padding: 12px 16px;
            border-radius: 8px;
            border: 1px solid var(--border);
            background: var(--card-bg);
            font-size: 14px;
            color: #2d3a4a;
            outline: none;
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .subscribe-form input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(26, 95, 201, 0.12);
        }
        .subscribe-form button {
            padding: 12px 20px;
            border-radius: 8px;
            background: var(--primary);
            color: #fff;
            border: none;
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            transition: all var(--transition);
            min-height: 44px;
            white-space: nowrap;
        }
        .subscribe-form button:hover {
            background: var(--primary-dark);
        }
        .subscribe-form button:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        .subscribe-success {
            display: none;
            margin-top: 12px;
            padding: 12px 16px;
            background: #ecfdf3;
            border: 1px solid #b7ebc5;
            border-radius: 8px;
            color: #1a7a3a;
            font-size: 14px;
            font-weight: 500;
        }
        .subscribe-success.show {
            display: block;
            animation: fadeIn 0.3s ease;
        }
        .live-hero-cover {
            border-radius: 14px;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border);
        }
        .live-hero-cover img {
            width: 100%;
            height: auto;
            aspect-ratio: 16 / 10;
            object-fit: cover;
        }
        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(-6px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .section {
            padding: var(--section-padding);
            background: var(--card-bg);
            border-bottom: 1px solid var(--border);
        }
        .section-alt {
            background: var(--bg);
        }
        .section-title {
            font-size: 24px;
            line-height: 1.4;
            color: var(--secondary);
            font-weight: 700;
            margin-bottom: 8px;
        }
        .section-subtitle {
            font-size: 15px;
            color: var(--neutral);
            margin-bottom: 32px;
            max-width: 700px;
            line-height: 1.75;
        }
        .filter-bar-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 28px;
        }
        .filter-bar-left {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .filter-bar-left .label {
            font-size: 13px;
            color: var(--neutral);
            font-weight: 500;
            margin-right: 4px;
        }
        .filter-bar-right {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--neutral);
        }
        .resource-card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .resource-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .resource-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
            border-color: #cddae9;
        }
        .resource-card-cover {
            position: relative;
            width: 100%;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--light-blue);
        }
        .resource-card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s ease;
        }
        .resource-card:hover .resource-card-cover img {
            transform: scale(1.04);
        }
        .resource-card-body {
            padding: 20px 20px 16px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .resource-card-body h3 {
            font-size: 17px;
            line-height: 1.4;
            color: var(--secondary);
            font-weight: 600;
            margin-bottom: 8px;
        }
        .resource-card-body p {
            font-size: 14px;
            color: var(--neutral);
            line-height: 1.65;
            margin-bottom: 12px;
            flex: 1;
        }
        .resource-card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            margin-bottom: 12px;
        }
        .resource-tag {
            display: inline-block;
            padding: 3px 10px;
            border-radius: 12px;
            font-size: 12px;
            font-weight: 500;
            background: var(--light-blue);
            color: var(--primary);
            white-space: nowrap;
        }
        .resource-tag.highlight {
            background: #fff3e0;
            color: #b45f06;
        }
        .resource-card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 12px;
            color: #8a9bb0;
            border-top: 1px solid var(--border);
            padding-top: 12px;
            margin-top: auto;
        }
        .resource-card-meta span {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .info-detail-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
        .info-detail-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow-sm);
        }
        .info-detail-card h3 {
            font-size: 18px;
            color: var(--secondary);
            font-weight: 600;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .info-detail-card h3 .card-icon {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: var(--light-blue);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            color: var(--primary);
            flex-shrink: 0;
        }
        .info-detail-card ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .info-detail-card ul li {
            font-size: 14px;
            color: var(--neutral);
            padding: 8px 0;
            border-bottom: 1px solid #f0f4f9;
            display: flex;
            align-items: flex-start;
            gap: 8px;
            line-height: 1.65;
        }
        .info-detail-card ul li:last-child {
            border-bottom: none;
        }
        .info-detail-card ul li::before {
            content: '•';
            color: var(--primary);
            font-weight: 700;
            flex-shrink: 0;
        }
        .compare-table-wrap {
            overflow-x: auto;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            background: var(--card-bg);
        }
        .compare-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 680px;
            font-size: 14px;
        }
        .compare-table thead th {
            background: var(--light-blue);
            color: var(--secondary);
            font-weight: 600;
            padding: 14px 16px;
            text-align: left;
            border-bottom: 1px solid var(--border);
            white-space: nowrap;
        }
        .compare-table tbody td {
            padding: 14px 16px;
            border-bottom: 1px solid #f0f4f9;
            color: var(--neutral);
            vertical-align: middle;
        }
        .compare-table tbody tr:nth-child(even) {
            background: #fafbfe;
        }
        .compare-table tbody tr:last-child td {
            border-bottom: none;
        }
        .compare-table .highlight-cell {
            color: var(--primary);
            font-weight: 600;
        }
        .compare-badge {
            display: inline-block;
            padding: 3px 10px;
            border-radius: 12px;
            font-size: 12px;
            font-weight: 600;
        }
        .compare-badge.green {
            background: #e8f7ee;
            color: #1a7a3a;
        }
        .compare-badge.orange {
            background: #fff3e0;
            color: #b45f06;
        }
        .faq-section {
            padding: var(--section-padding);
            background: var(--bg);
            border-bottom: 1px solid var(--border);
        }
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 800px;
        }
        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-lg);
        }
        .faq-item.active {
            border-left: 3px solid var(--primary);
            border-left-color: var(--primary);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 20px;
            cursor: pointer;
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            font-size: 15px;
            font-weight: 600;
            color: var(--secondary);
            gap: 16px;
            transition: all var(--transition);
            user-select: none;
        }
        .faq-question:hover {
            background: var(--light-blue);
        }
        .faq-question:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: -2px;
        }
        .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            transition: transform 0.25s ease;
        }
        .faq-item.active .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            display: none;
            padding: 0 20px 18px;
            font-size: 14px;
            color: var(--neutral);
            line-height: 1.75;
        }
        .faq-item.active .faq-answer {
            display: block;
            animation: fadeIn 0.25s ease;
        }
        .cta-section {
            padding: var(--section-padding);
            background: linear-gradient(135deg, var(--light-blue) 0%, #f8fbff 60%, var(--card-bg) 100%);
            border-bottom: 1px solid var(--border);
        }
        .cta-wrapper {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-lg);
            padding: 40px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: start;
        }
        .cta-left h2 {
            font-size: 24px;
            line-height: 1.4;
            color: var(--secondary);
            font-weight: 700;
            margin-bottom: 16px;
        }
        .cta-left ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .cta-left ul li {
            font-size: 14px;
            color: var(--neutral);
            padding: 8px 0;
            display: flex;
            align-items: flex-start;
            gap: 8px;
            line-height: 1.65;
        }
        .cta-left ul li::before {
            content: '✓';
            color: #1a7a3a;
            font-weight: 700;
            flex-shrink: 0;
        }
        .cta-right form {
            display: flex;
            flex-direction: column;
            gap: 18px;
        }
        .form-field {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }
        .form-field label {
            font-size: 14px;
            font-weight: 500;
            color: var(--secondary);
        }
        .form-field label .required {
            color: #e74c3c;
            margin-left: 2px;
        }
        .form-field input,
        .form-field select,
        .form-field textarea {
            padding: 12px 16px;
            border-radius: 8px;
            border: 1px solid var(--border);
            background: var(--card-bg);
            font-size: 14px;
            color: #2d3a4a;
            outline: none;
            transition: border-color var(--transition), box-shadow var(--transition);
            width: 100%;
        }
        .form-field input:focus,
        .form-field select:focus,
        .form-field textarea:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(26, 95, 201, 0.12);
        }
        .form-field textarea {
            min-height: 100px;
            resize: vertical;
        }
        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }
        .submit-btn {
            padding: 14px 24px;
            border-radius: 8px;
            background: var(--primary);
            color: #fff;
            border: none;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: all var(--transition);
            min-height: 46px;
            width: 100%;
        }
        .submit-btn:hover {
            background: var(--primary-dark);
        }
        .submit-btn:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        .form-success {
            display: none;
            padding: 16px;
            background: #ecfdf3;
            border: 1px solid #b7ebc5;
            border-radius: 8px;
            color: #1a7a3a;
            font-size: 14px;
            font-weight: 500;
            text-align: center;
        }
        .form-success.show {
            display: block;
            animation: fadeIn 0.3s ease;
        }
        .site-footer {
            background: var(--secondary);
            color: #c5d0dc;
            padding: 56px 0 28px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }
        .footer-brand h3 {
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: #b0c0d0;
            max-width: 320px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 14px;
        }
        .footer-col a {
            display: block;
            color: #b0c0d0;
            text-decoration: none;
            font-size: 13px;
            padding: 4px 0;
            transition: color var(--transition);
        }
        .footer-col a:hover {
            color: #fff;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 12px;
            color: #90a4b8;
        }
        .footer-bottom a {
            color: #b0c0d0;
            text-decoration: none;
            transition: color var(--transition);
        }
        .footer-bottom a:hover {
            color: #fff;
        }
        @media (max-width: 1024px) {
            .resource-card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .live-hero-grid {
                grid-template-columns: 1fr 300px;
                gap: 28px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .cta-wrapper {
                grid-template-columns: 1fr;
            }
            .info-detail-grid {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 768px) {
            .header-top {
                height: auto;
                flex-wrap: wrap;
                padding: 10px 0 6px;
                gap: 8px;
            }
            .nav-chips {
                order: 3;
                width: 100%;
                flex-basis: 100%;
                padding-bottom: 6px;
            }
            .header-cta {
                margin-left: auto;
            }
            .logo {
                font-size: 17px;
            }
            .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 14px;
                border-radius: 6px;
            }
            .header-cta {
                padding: 7px 14px;
                font-size: 12px;
                min-height: 34px;
            }
            .nav-chip {
                padding: 6px 12px;
                font-size: 12px;
            }
            .page-title-row {
                flex-direction: column;
                gap: 12px;
            }
            .page-title-left h1 {
                font-size: 24px;
            }
            .live-hero-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .live-hero-info h2 {
                font-size: 22px;
            }
            .countdown-number {
                font-size: 24px;
            }
            .resource-card-grid {
                grid-template-columns: 1fr;
            }
            .filter-bar-row {
                flex-direction: column;
                align-items: flex-start;
            }
            .form-row {
                grid-template-columns: 1fr;
            }
            .cta-wrapper {
                padding: 24px 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .section {
                padding: 48px 0;
            }
            .section-title {
                font-size: 20px;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 16px;
            }
            .page-title-left h1 {
                font-size: 22px;
            }
            .live-hero-info h2 {
                font-size: 20px;
            }
            .countdown-box {
                gap: 6px;
            }
            .countdown-unit {
                padding: 8px 10px;
                min-width: 52px;
            }
            .countdown-number {
                font-size: 22px;
            }
            .subscribe-form {
                flex-direction: column;
            }
            .subscribe-form button {
                width: 100%;
            }
            .resource-card-meta {
                flex-direction: column;
                gap: 4px;
                align-items: flex-start;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }
            .compare-table-wrap {
                border-radius: var(--radius-md);
            }
        }