/* roulang page: index */
:root {
            --primary: #0B5BD3;
            --primary-hover: #0948a8;
            --primary-light: #EBF2FB;
            --primary-border: #b8cfe8;
            --accent: #F59E0B;
            --accent-deep: #E08A0B;
            --success: #16A34A;
            --danger: #DC2626;
            --text-dark: #0F172A;
            --text-body: #475569;
            --text-muted: #64748B;
            --bg-page: #F5F8FC;
            --bg-card: #FFFFFF;
            --border-light: #E4ECF5;
            --border-input: #DCE6F2;
            --shadow-card: 0 8px 24px rgba(15, 60, 120, 0.08);
            --shadow-hover: 0 14px 32px rgba(15, 60, 120, 0.14);
            --shadow-nav: 0 4px 20px rgba(15, 60, 120, 0.08);
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-nav: 18px;
            --radius-input: 10px;
            --font-stack: 'PingFang SC', 'HarmonyOS Sans SC', 'Microsoft YaHei', 'Noto Sans CJK SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --max-width: 1200px;
            --section-pad-desktop: 88px 24px;
            --section-pad-mobile: 52px 16px;
            --transition-fast: 0.18s ease;
            --transition-medium: 0.3s ease;
        }

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

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

        body {
            font-family: var(--font-stack);
            font-size: 15px;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-page);
            min-height: 100vh;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }

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

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

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

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        ul,
        ol {
            list-style: none;
        }

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

        .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;
            padding: 14px 24px;
            pointer-events: none;
            transition: padding var(--transition-medium);
        }

        .site-header.scrolled {
            padding: 8px 24px;
        }

        .nav-wrap {
            pointer-events: auto;
            max-width: var(--max-width);
            margin: 0 auto;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(8px);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-nav);
            box-shadow: var(--shadow-nav);
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 10px 22px;
            transition: box-shadow var(--transition-medium), padding var(--transition-medium);
        }

        .site-header.scrolled .nav-wrap {
            box-shadow: 0 8px 28px rgba(15, 60, 120, 0.16);
            padding: 6px 20px;
        }

        .logo-link {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            color: var(--text-dark);
            text-decoration: none;
            font-weight: 700;
            font-size: 20px;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

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

        .logo-mark {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--primary) 0%, #1e7ee8 100%);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 800;
            font-size: 16px;
            letter-spacing: 1px;
            flex-shrink: 0;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 6px;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }

        .nav-menu::-webkit-scrollbar {
            display: none;
        }

        .nav-link {
            display: inline-block;
            padding: 8px 14px;
            color: var(--text-body);
            text-decoration: none;
            font-size: 14px;
            font-weight: 500;
            border-radius: 8px;
            white-space: nowrap;
            transition: background var(--transition-fast), color var(--transition-fast);
        }

        .nav-link:hover {
            background: var(--primary-light);
            color: var(--primary);
            text-decoration: none;
        }

        .nav-link.active {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 13px;
            text-decoration: none;
            white-space: nowrap;
            transition: background var(--transition-fast), transform var(--transition-fast);
            flex-shrink: 0;
        }

        .nav-cta:hover {
            background: var(--primary-hover);
            color: #fff;
            text-decoration: none;
            transform: translateY(-1px);
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 4px;
            padding: 8px;
            border-radius: 8px;
            background: transparent;
            transition: background var(--transition-fast);
        }

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

        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2.5px;
            background: var(--text-dark);
            border-radius: 2px;
            transition: transform var(--transition-medium), opacity var(--transition-medium);
        }

        .nav-toggle[aria-expanded="true"] span:nth-child(1) {
            transform: translateY(6.5px) rotate(45deg);
        }

        .nav-toggle[aria-expanded="true"] span:nth-child(2) {
            opacity: 0;
        }

        .nav-toggle[aria-expanded="true"] span:nth-child(3) {
            transform: translateY(-6.5px) rotate(-45deg);
        }

        /* Hero */
        .hero {
            padding: 52px 24px 72px;
            position: relative;
            overflow: hidden;
            background:
                radial-gradient(ellipse at 20% 10%, rgba(11, 91, 211, 0.06) 0%, transparent 55%),
                radial-gradient(ellipse at 85% 20%, rgba(245, 158, 11, 0.05) 0%, transparent 45%),
                var(--bg-page);
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image:
                linear-gradient(rgba(11, 91, 211, 0.03) 1px, transparent 1px),
                linear-gradient(90deg, rgba(11, 91, 211, 0.03) 1px, transparent 1px);
            background-size: 48px 48px;
            pointer-events: none;
            mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.5), transparent 80%);
            -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.5), transparent 80%);
        }

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

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

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 14px;
            background: var(--primary-light);
            color: var(--primary);
            border: 1px solid var(--primary-border);
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 18px;
        }

        .hero-badge .dot {
            width: 7px;
            height: 7px;
            background: var(--success);
            border-radius: 50%;
            display: inline-block;
            animation: pulse-dot 2s infinite;
        }

        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.35;
            }
        }

        .hero h1 {
            font-size: 42px;
            font-weight: 700;
            line-height: 1.2;
            color: var(--text-dark);
            margin-bottom: 20px;
            letter-spacing: -0.01em;
        }

        .hero-subtitle {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-body);
            margin-bottom: 28px;
            max-width: 560px;
        }

        .hero-check-list {
            display: flex;
            flex-wrap: wrap;
            gap: 12px 24px;
            margin-bottom: 30px;
            padding: 16px 20px;
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            box-shadow: 0 4px 16px rgba(15, 60, 120, 0.05);
        }

        .hero-check-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13.5px;
            font-weight: 500;
            color: var(--text-body);
        }

        .hero-check-item .check-icon {
            width: 20px;
            height: 20px;
            background: var(--primary-light);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 12px;
            flex-shrink: 0;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 14px;
            transition: all var(--transition-fast);
            text-decoration: none;
            line-height: 1.4;
            border: 2px solid transparent;
        }

        .btn:hover {
            text-decoration: none;
            transform: translateY(-2px);
        }

        .btn:active {
            transform: translateY(0) scale(0.98);
        }

        .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-hover);
            border-color: var(--primary-hover);
            color: #fff;
        }

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

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

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

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

        .hero-trust-stats {
            display: flex;
            gap: 32px;
            flex-wrap: wrap;
            margin-top: 28px;
        }

        .hero-stat {
            display: flex;
            flex-direction: column;
        }

        .hero-stat .stat-num {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-dark);
            line-height: 1.2;
        }

        .hero-stat .stat-label {
            font-size: 12.5px;
            color: var(--text-muted);
            margin-top: 2px;
        }

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

        .hero-visual-inner {
            width: 100%;
            max-width: 480px;
            position: relative;
        }

        .hero-img-primary {
            width: 100%;
            aspect-ratio: 4/3;
            object-fit: cover;
            border-radius: 20px;
            box-shadow: 0 20px 48px rgba(15, 60, 120, 0.18);
            border: 4px solid #fff;
        }

        .hero-float-card {
            position: absolute;
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: 14px;
            box-shadow: var(--shadow-card);
            padding: 14px 18px;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .hero-float-card.card-top {
            top: -18px;
            right: 12px;
        }

        .hero-float-card.card-bottom {
            bottom: -16px;
            left: 12px;
        }

        .float-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            flex-shrink: 0;
        }

        .float-icon.blue {
            background: var(--primary-light);
            color: var(--primary);
        }
        .float-icon.orange {
            background: #fef3e2;
            color: var(--accent-deep);
        }

        .float-text .float-label {
            font-size: 11.5px;
            color: var(--text-muted);
        }
        .float-text .float-value {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-dark);
        }

        /* Sections */
        .section {
            padding: var(--section-pad-desktop);
        }

        .section-alt {
            background: #fff;
        }
        .section-tinted {
            background: var(--primary-light);
        }

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

        .section-header .section-tag {
            display: inline-block;
            padding: 5px 14px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            border-radius: 999px;
            margin-bottom: 12px;
        }

        .section-header h2 {
            font-size: 30px;
            font-weight: 700;
            color: var(--text-dark);
            line-height: 1.3;
            margin-bottom: 12px;
        }

        .section-header p {
            font-size: 15px;
            color: var(--text-body);
            max-width: 720px;
            line-height: 1.8;
        }

        /* Brand intro */
        .brand-intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .brand-intro-text p {
            margin-bottom: 14px;
            line-height: 1.9;
        }
        .brand-intro-text p:last-child {
            margin-bottom: 0;
        }

        .brand-intro-image img {
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
            border-radius: 20px;
            box-shadow: var(--shadow-card);
        }

        /* Service Matrix */
        .service-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 24px;
        }

        .service-main-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 36px 32px;
            display: flex;
            flex-direction: column;
            transition: box-shadow var(--transition-medium), transform var(--transition-medium);
        }

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

        .service-main-card .service-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 16px;
        }

        .service-main-card h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 10px;
        }

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

        .service-main-card img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            border-radius: 12px;
            margin-top: auto;
        }

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

        .service-compact-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 24px 20px;
            transition: box-shadow var(--transition-medium), transform var(--transition-medium);
        }

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

        .service-compact-card .compact-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 17px;
            margin-bottom: 12px;
        }

        .compact-icon.blue {
            background: var(--primary-light);
            color: var(--primary);
        }
        .compact-icon.orange {
            background: #fef3e2;
            color: var(--accent-deep);
        }
        .compact-icon.green {
            background: #e8f8ee;
            color: var(--success);
        }

        .service-compact-card h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 6px;
        }

        .service-compact-card p {
            font-size: 13px;
            color: var(--text-body);
            line-height: 1.7;
        }

        /* Stats Bar */
        .stats-bar {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .stat-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 24px 20px;
            text-align: center;
            transition: box-shadow var(--transition-medium), transform var(--transition-medium);
        }

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

        .stat-card .stat-num {
            font-size: 32px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
        }

        .stat-card .stat-label {
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 6px;
        }

        /* Scoreboard */
        .scoreboard-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .score-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 20px;
            transition: box-shadow var(--transition-medium), transform var(--transition-medium);
        }

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

        .score-card-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 14px;
            font-size: 12px;
            color: var(--text-muted);
        }

        .score-status {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            font-weight: 600;
            font-size: 12px;
        }

        .score-status .status-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            display: inline-block;
        }

        .score-status.live .status-dot {
            background: var(--danger);
            animation: pulse-dot 1.2s infinite;
        }
        .score-status.upcoming .status-dot {
            background: var(--accent);
        }
        .score-status.finished .status-dot {
            background: var(--success);
        }

        .score-status.live {
            color: var(--danger);
        }
        .score-status.upcoming {
            color: var(--accent-deep);
        }
        .score-status.finished {
            color: var(--success);
        }

        .score-teams {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 8px 0;
            border-bottom: 1px solid var(--border-light);
        }

        .score-teams:last-of-type {
            border-bottom: none;
        }

        .score-team {
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 600;
            color: var(--text-dark);
            font-size: 14px;
        }

        .score-team .team-logo {
            width: 28px;
            height: 28px;
            border-radius: 6px;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            font-weight: 700;
            color: var(--primary);
        }

        .score-value {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-dark);
        }
        .score-value.highlight {
            color: var(--accent-deep);
        }

        .score-time {
            font-size: 11.5px;
            color: var(--text-muted);
            margin-top: 8px;
        }

        /* Solution Steps */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            counter-reset: step-counter;
        }

        .step-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 28px 22px;
            box-shadow: var(--shadow-card);
            position: relative;
            counter-increment: step-counter;
            transition: box-shadow var(--transition-medium), transform var(--transition-medium);
        }

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

        .step-card::before {
            content: counter(step-counter);
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--primary);
            color: #fff;
            border-radius: 10px;
            font-weight: 700;
            font-size: 16px;
            margin-bottom: 14px;
        }

        .step-card h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 8px;
        }

        .step-card p {
            font-size: 13px;
            color: var(--text-body);
            line-height: 1.7;
        }

        /* Events Spotlight */
        .events-spotlight {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }

        .event-feature {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            transition: box-shadow var(--transition-medium);
        }

        .event-feature:hover {
            box-shadow: var(--shadow-hover);
        }

        .event-feature img {
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
            border-radius: 16px 16px 0 0;
        }

        .event-feature-body {
            padding: 22px 24px;
        }

        .event-feature-body h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 8px;
        }
        .event-feature-body p {
            font-size: 13.5px;
            color: var(--text-body);
            line-height: 1.7;
        }

        /* Case Wall */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .case-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 24px 20px;
            transition: box-shadow var(--transition-medium), transform var(--transition-medium);
        }

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

        .case-card .case-tag {
            display: inline-block;
            padding: 4px 10px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            border-radius: 6px;
            margin-bottom: 12px;
        }

        .case-card h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 6px;
        }
        .case-card p {
            font-size: 13px;
            color: var(--text-body);
            line-height: 1.7;
        }

        /* News List */
        .news-list-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .news-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            display: flex;
            flex-direction: row;
            transition: box-shadow var(--transition-medium), transform var(--transition-medium);
        }

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

        .news-card img {
            width: 200px;
            min-height: 100%;
            object-fit: cover;
            border-radius: 16px 0 0 16px;
            flex-shrink: 0;
        }

        .news-card-body {
            padding: 20px 22px;
            display: flex;
            flex-direction: column;
        }

        .news-card-body .news-date {
            font-size: 12px;
            color: var(--text-muted);
            margin-bottom: 8px;
        }
        .news-card-body h4 {
            font-size: 15.5px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .news-card-body p {
            font-size: 13px;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 12px;
        }
        .news-card-body .read-more {
            margin-top: auto;
            font-size: 13px;
            font-weight: 600;
        }

        /* Partners */
        .partners-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
            justify-content: center;
        }

        .partner-badge {
            padding: 10px 20px;
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: 12px;
            font-weight: 600;
            font-size: 13.5px;
            color: var(--text-body);
            box-shadow: 0 2px 8px rgba(15, 60, 120, 0.04);
            transition: border-color var(--transition-fast), color var(--transition-fast);
        }
        .partner-badge:hover {
            border-color: var(--primary-border);
            color: var(--primary);
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 800px;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: 12px;
            overflow: hidden;
            transition: box-shadow var(--transition-medium), border-color var(--transition-medium);
        }

        .faq-item.open {
            border-color: var(--primary-border);
            box-shadow: 0 8px 20px rgba(15, 60, 120, 0.1);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 20px;
            cursor: pointer;
            font-weight: 600;
            color: var(--text-dark);
            font-size: 15px;
            gap: 16px;
            transition: background var(--transition-fast);
        }

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

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

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-medium);
        }

        .faq-item.open .faq-answer {
            max-height: 240px;
        }

        .faq-answer p {
            padding: 0 20px 18px;
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.8;
        }

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

        .guarantee-item {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: 14px;
            padding: 20px 16px;
            text-align: center;
            box-shadow: 0 4px 12px rgba(15, 60, 120, 0.04);
        }

        .guarantee-item .guarantee-icon {
            font-size: 24px;
            margin-bottom: 8px;
        }
        .guarantee-item h4 {
            font-size: 14px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 4px;
        }
        .guarantee-item p {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* CTA */
        .cta-banner {
            background: linear-gradient(135deg, var(--primary) 0%, #1a6fd8 100%);
            border-radius: 20px;
            padding: 48px 40px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
            box-shadow: 0 16px 40px rgba(11, 91, 211, 0.25);
        }

        .cta-banner h2 {
            font-size: 26px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }
        .cta-banner p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.7;
            max-width: 480px;
        }

        .cta-banner .btn {
            flex-shrink: 0;
        }

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

        /* Footer */
        .site-footer {
            background: #0f2542;
            color: #c8d4e4;
            padding: 56px 24px 28px;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 40px;
        }

        .footer-brand h3 {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }
        .footer-brand p {
            font-size: 13px;
            color: #a8bcd4;
            line-height: 1.7;
            max-width: 280px;
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            color: #c8d4e4;
            font-size: 13px;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: #fff;
            text-decoration: none;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 12.5px;
            color: #94a8c0;
        }

        .footer-bottom a {
            color: #c8d4e4;
            text-decoration: none;
        }
        .footer-bottom a:hover {
            color: #fff;
            text-decoration: underline;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 36px;
            }
            .hero-visual {
                order: -1;
            }
            .hero-visual-inner {
                max-width: 560px;
            }
            .service-grid {
                grid-template-columns: 1fr;
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .scoreboard-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .case-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .guarantee-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .site-header {
                padding: 10px 12px;
            }
            .site-header.scrolled {
                padding: 6px 12px;
            }
            .nav-wrap {
                padding: 8px 14px;
                flex-wrap: wrap;
                gap: 8px;
            }
            .nav-toggle {
                display: flex;
            }
            .nav-menu {
                display: none;
                flex-direction: column;
                width: 100%;
                gap: 2px;
                padding: 8px 0;
                overflow-y: auto;
                max-height: 60vh;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-link {
                width: 100%;
                text-align: left;
                padding: 10px 14px;
                border-radius: 8px;
            }
            .nav-cta {
                display: none;
            }
            .hero {
                padding: 32px 16px 48px;
            }
            .hero h1 {
                font-size: 28px;
            }
            .section {
                padding: var(--section-pad-mobile);
            }
            .brand-intro-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .service-secondary {
                grid-template-columns: 1fr;
            }
            .stats-bar {
                grid-template-columns: repeat(2, 1fr);
            }
            .news-list-grid {
                grid-template-columns: 1fr;
            }
            .news-card {
                flex-direction: column;
            }
            .news-card img {
                width: 100%;
                min-height: auto;
                aspect-ratio: 16/9;
                border-radius: 16px 16px 0 0;
            }
            .events-spotlight {
                grid-template-columns: 1fr;
            }
            .section-header h2 {
                font-size: 24px;
            }
            .cta-banner {
                flex-direction: column;
                text-align: center;
                padding: 32px 20px;
            }
            .cta-banner p {
                max-width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .hero-check-list {
                flex-direction: column;
                gap: 8px;
            }
        }

        @media (max-width: 520px) {
            .hero h1 {
                font-size: 24px;
            }
            .hero-subtitle {
                font-size: 14px;
            }
            .section-header h2 {
                font-size: 21px;
            }
            .scoreboard-grid,
            .case-grid,
            .steps-grid,
            .stats-bar {
                grid-template-columns: 1fr;
            }
            .guarantee-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .hero-actions {
                flex-direction: column;
                width: 100%;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .hero-trust-stats {
                gap: 20px;
            }
            .nav-wrap {
                border-radius: 14px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #0B5BD3;
            --primary-hover: #0948a8;
            --primary-light: #EBF2FB;
            --primary-border: #b8cfe8;
            --accent: #F59E0B;
            --accent-deep: #E08A0B;
            --success: #16A34A;
            --danger: #DC2626;
            --text-dark: #0F172A;
            --text-body: #475569;
            --text-muted: #64748B;
            --bg-page: #F5F8FC;
            --bg-card: #FFFFFF;
            --border-light: #E4ECF5;
            --border-input: #DCE6F2;
            --shadow-card: 0 8px 24px rgba(15, 60, 120, 0.08);
            --shadow-hover: 0 14px 32px rgba(15, 60, 120, 0.14);
            --shadow-nav: 0 4px 20px rgba(15, 60, 120, 0.08);
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-nav: 18px;
            --radius-input: 10px;
            --font-stack: 'PingFang SC', 'HarmonyOS Sans SC', 'Microsoft YaHei', 'Noto Sans CJK SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --max-width: 1200px;
            --section-pad-desktop: 72px 24px;
            --section-pad-mobile: 48px 16px;
            --transition-fast: 0.18s ease;
            --transition-medium: 0.3s ease;
        }

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

        body {
            font-family: var(--font-stack);
            font-size: 15px;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-page);
            min-height: 100vh;
            margin: 0;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }

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

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

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

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

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

        /* Header / Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 14px 24px;
            pointer-events: none;
            transition: padding var(--transition-medium);
        }
        .site-header.scrolled {
            padding: 8px 24px;
        }
        .nav-wrap {
            pointer-events: auto;
            max-width: var(--max-width);
            margin: 0 auto;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(8px);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-nav);
            box-shadow: var(--shadow-nav);
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 10px 22px;
            transition: box-shadow var(--transition-medium), padding var(--transition-medium);
        }
        .site-header.scrolled .nav-wrap {
            box-shadow: 0 8px 28px rgba(15, 60, 120, 0.16);
            padding: 6px 20px;
        }
        .logo-link {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            color: var(--text-dark);
            text-decoration: none;
            font-weight: 700;
            font-size: 20px;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .logo-link:hover {
            text-decoration: none;
            color: var(--text-dark);
        }
        .logo-mark {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--primary) 0%, #1e7ee8 100%);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 800;
            font-size: 16px;
            letter-spacing: 1px;
            flex-shrink: 0;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 6px;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }
        .nav-menu::-webkit-scrollbar {
            display: none;
        }
        .nav-link {
            display: inline-block;
            padding: 8px 14px;
            color: var(--text-body);
            text-decoration: none;
            font-size: 14px;
            font-weight: 500;
            border-radius: 8px;
            white-space: nowrap;
            transition: background var(--transition-fast), color var(--transition-fast);
        }
        .nav-link:hover {
            background: var(--primary-light);
            color: var(--primary);
            text-decoration: none;
        }
        .nav-link.active {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 13px;
            text-decoration: none;
            white-space: nowrap;
            transition: background var(--transition-fast), transform var(--transition-fast);
            flex-shrink: 0;
        }
        .nav-cta:hover {
            background: var(--primary-hover);
            text-decoration: none;
            color: #fff;
            transform: translateY(-1px);
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 6px;
            border-radius: 8px;
            background: var(--primary-light);
            transition: background var(--transition-fast);
        }
        .nav-toggle span {
            width: 22px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }
        .nav-toggle:hover {
            background: var(--primary-border);
        }
        .nav-toggle.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* Breadcrumb */
        .breadcrumb-section {
            padding: 40px 0 0;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--text-muted);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .sep {
            color: var(--border-light);
            user-select: none;
        }
        .breadcrumb .current {
            color: var(--primary);
            font-weight: 600;
        }

        /* Category Header */
        .category-header {
            padding: 24px 0 32px;
        }
        .category-header .inner {
            display: flex;
            flex-wrap: wrap;
            align-items: flex-start;
            justify-content: space-between;
            gap: 20px;
        }
        .category-header .heading-block h1 {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-dark);
            margin: 0 0 10px;
            line-height: 1.25;
        }
        .category-header .heading-block p {
            font-size: 15px;
            color: var(--text-body);
            max-width: 680px;
            margin: 0;
            line-height: 1.75;
        }
        .category-header .info-badge {
            display: flex;
            align-items: center;
            gap: 8px;
            background: var(--primary-light);
            border: 1px solid var(--primary-border);
            border-radius: 20px;
            padding: 8px 16px;
            font-size: 13px;
            color: var(--primary);
            font-weight: 600;
            white-space: nowrap;
            align-self: center;
        }

        /* Section */
        .section {
            padding: var(--section-pad-desktop);
        }
        .section-alt {
            background: #fff;
        }
        .section-header {
            margin-bottom: 28px;
        }
        .section-header h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-dark);
            margin: 0 0 8px;
            line-height: 1.3;
        }
        .section-header p {
            font-size: 15px;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.7;
        }

        /* Filter Toolbar */
        .filter-toolbar {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px;
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 14px 18px;
            box-shadow: var(--shadow-card);
            margin-bottom: 28px;
        }
        .filter-toolbar .filter-group {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }
        .filter-btn {
            padding: 7px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
            color: var(--text-body);
            background: transparent;
            border: 1px solid var(--border-light);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .filter-btn:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
        }
        .filter-btn.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            font-weight: 600;
        }
        .filter-toolbar .sort-select {
            margin-left: auto;
        }
        .filter-toolbar select {
            padding: 8px 36px 8px 14px;
            border: 1px solid var(--border-input);
            border-radius: var(--radius-input);
            background: #fff;
            color: var(--text-body);
            font-size: 13px;
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23475569' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 12px center;
            cursor: pointer;
            transition: border-color var(--transition-fast);
        }
        .filter-toolbar select:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(11, 91, 211, 0.1);
        }

        /* News List */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .news-card {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 22px;
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition-medium), transform var(--transition-medium);
        }
        .news-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .news-card .news-image {
            flex: 0 0 260px;
            max-width: 260px;
            width: 100%;
        }
        .news-card .news-image img {
            width: 100%;
            height: 160px;
            object-fit: cover;
            border-radius: 12px;
        }
        .news-card .news-content {
            flex: 1;
            min-width: 0;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            gap: 10px;
        }
        .news-card .news-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .news-card .news-meta .tag {
            background: var(--primary-light);
            color: var(--primary);
            padding: 3px 10px;
            border-radius: 14px;
            font-size: 12px;
            font-weight: 600;
            white-space: nowrap;
        }
        .news-card .news-meta .date {
            white-space: nowrap;
        }
        .news-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-dark);
            margin: 0;
            line-height: 1.4;
        }
        .news-card h3 a {
            color: var(--text-dark);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        .news-card h3 a:hover {
            color: var(--primary);
        }
        .news-card .news-excerpt {
            font-size: 14px;
            color: var(--text-body);
            margin: 0;
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card .read-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition-fast), gap var(--transition-fast);
            align-self: flex-start;
        }
        .news-card .read-more:hover {
            color: var(--primary-hover);
            gap: 10px;
        }

        /* View More */
        .view-more-wrap {
            text-align: center;
            margin-top: 28px;
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            border: 1px solid var(--primary);
            border-radius: var(--radius-btn);
            color: var(--primary);
            font-weight: 600;
            font-size: 14px;
            background: transparent;
            text-decoration: none;
            transition: all var(--transition-fast);
        }
        .btn-outline:hover {
            background: var(--primary-light);
            color: var(--primary);
            text-decoration: none;
        }

        /* Hot News / Quick News */
        .two-col-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
        .mini-card-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .mini-card {
            display: flex;
            align-items: center;
            gap: 14px;
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: 12px;
            padding: 14px 16px;
            transition: box-shadow var(--transition-fast), border-color var(--transition-fast);
        }
        .mini-card:hover {
            border-color: var(--primary-border);
            box-shadow: var(--shadow-card);
        }
        .mini-card .mini-index {
            flex-shrink: 0;
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 14px;
        }
        .mini-card .mini-content h4 {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-dark);
            margin: 0 0 4px;
            line-height: 1.4;
        }
        .mini-card .mini-content p {
            font-size: 12px;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.5;
        }

        /* Data Strip */
        .data-strip {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            background: linear-gradient(135deg, var(--primary) 0%, #1e5dc7 100%);
            border-radius: var(--radius-card);
            padding: 28px 30px;
            color: #fff;
            align-items: center;
            justify-content: space-between;
        }
        .data-strip .data-item {
            flex: 1;
            min-width: 140px;
            text-align: center;
        }
        .data-strip .data-number {
            font-size: 30px;
            font-weight: 800;
            letter-spacing: 0.02em;
            line-height: 1.2;
        }
        .data-strip .data-label {
            font-size: 13px;
            opacity: 0.85;
            margin-top: 4px;
        }
        .data-strip .data-divider {
            width: 1px;
            height: 40px;
            background: rgba(255, 255, 255, 0.25);
            flex-shrink: 0;
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: 12px;
            overflow: hidden;
            transition: box-shadow var(--transition-fast), border-color var(--transition-fast);
        }
        .faq-item:hover {
            border-color: var(--primary-border);
        }
        .faq-item.active {
            box-shadow: var(--shadow-card);
            border-color: var(--primary-border);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 16px 18px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-dark);
            background: transparent;
            text-align: left;
            transition: background var(--transition-fast);
        }
        .faq-question:hover {
            background: var(--primary-light);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            border-radius: 6px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 700;
            transition: transform var(--transition-fast);
        }
        .faq-item.active .faq-question .faq-icon {
            transform: rotate(45deg);
            background: var(--primary);
            color: #fff;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-medium), padding var(--transition-medium);
            padding: 0 18px;
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.75;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 18px 16px;
        }

        /* CTA */
        .cta-section {
            padding: var(--section-pad-desktop);
        }
        .cta-card {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: 20px;
            padding: 40px 36px;
            box-shadow: var(--shadow-card);
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 24px;
            justify-content: space-between;
        }
        .cta-card .cta-text h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-dark);
            margin: 0 0 8px;
            line-height: 1.3;
        }
        .cta-card .cta-text p {
            font-size: 14px;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.7;
            max-width: 520px;
        }
        .cta-card .cta-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 11px 24px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 14px;
            text-decoration: none;
            transition: all var(--transition-fast);
            border: 1px solid var(--primary);
        }
        .btn-primary:hover {
            background: var(--primary-hover);
            border-color: var(--primary-hover);
            color: #fff;
            text-decoration: none;
            transform: translateY(-1px);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 11px 24px;
            background: transparent;
            color: var(--primary);
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 14px;
            text-decoration: none;
            transition: all var(--transition-fast);
            border: 1px solid var(--primary);
        }
        .btn-secondary:hover {
            background: var(--primary-light);
            color: var(--primary);
            text-decoration: none;
        }

        /* Footer */
        .site-footer {
            background: #132238;
            color: rgba(255, 255, 255, 0.75);
            padding: 56px 24px 28px;
            margin-top: 60px;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            max-width: var(--max-width);
            margin: 0 auto;
        }
        .footer-brand h3 {
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            margin: 0 0 10px;
        }
        .footer-brand p {
            font-size: 13px;
            line-height: 1.7;
            margin: 0;
            max-width: 280px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            margin: 0 0 12px;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.75);
            font-size: 13px;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: #fff;
            text-decoration: none;
        }
        .footer-bottom {
            max-width: var(--max-width);
            margin: 36px auto 0;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.55);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.75);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        .footer-bottom a:hover {
            color: #fff;
        }

        /* Responsive */
        @media (max-width: 1023px) {
            .nav-menu {
                gap: 2px;
            }
            .nav-link {
                padding: 8px 10px;
                font-size: 13px;
            }
            .nav-cta {
                padding: 7px 12px;
                font-size: 12px;
            }
            .news-card .news-image {
                flex: 0 0 200px;
                max-width: 200px;
            }
            .two-col-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .data-strip .data-divider:nth-child(4),
            .data-strip .data-divider:nth-child(6) {
                display: none;
            }
        }

        @media (max-width: 767px) {
            .site-header {
                padding: 10px 12px;
            }
            .nav-wrap {
                padding: 8px 14px;
                border-radius: 14px;
                position: relative;
            }
            .nav-toggle {
                display: flex;
            }
            .nav-menu {
                display: none;
                position: absolute;
                top: calc(100% + 6px);
                left: 0;
                right: 0;
                background: #fff;
                border: 1px solid var(--border-light);
                border-radius: 14px;
                padding: 8px;
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
                box-shadow: var(--shadow-hover);
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-link {
                padding: 10px 14px;
                font-size: 14px;
                text-align: left;
                border-radius: 8px;
            }
            .nav-cta {
                display: none;
            }
            .logo-link {
                font-size: 17px;
            }
            .logo-mark {
                width: 32px;
                height: 32px;
                font-size: 14px;
                border-radius: 8px;
            }
            .section {
                padding: var(--section-pad-mobile);
            }
            .cta-section {
                padding: var(--section-pad-mobile);
            }
            .category-header .heading-block h1 {
                font-size: 26px;
            }
            .category-header .info-badge {
                align-self: flex-start;
            }
            .news-card {
                flex-direction: column;
                gap: 14px;
                padding: 16px;
            }
            .news-card .news-image {
                flex: 1 1 auto;
                max-width: 100%;
            }
            .news-card .news-image img {
                height: 180px;
            }
            .filter-toolbar {
                flex-direction: column;
                align-items: stretch;
                gap: 10px;
            }
            .filter-toolbar .filter-group {
                overflow-x: auto;
                flex-wrap: nowrap;
                padding-bottom: 4px;
            }
            .filter-toolbar .sort-select {
                margin-left: 0;
            }
            .filter-toolbar select {
                width: 100%;
            }
            .data-strip {
                flex-direction: column;
                gap: 14px;
                padding: 22px 18px;
                text-align: center;
            }
            .data-strip .data-divider {
                display: none;
            }
            .data-strip .data-item {
                min-width: auto;
            }
            .cta-card {
                flex-direction: column;
                align-items: flex-start;
                padding: 28px 20px;
            }
            .cta-card .cta-actions {
                width: 100%;
                flex-direction: column;
            }
            .cta-card .cta-actions .btn-primary,
            .cta-card .cta-actions .btn-secondary {
                width: 100%;
                justify-content: center;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .section-header h2 {
                font-size: 22px;
            }
        }

        @media (max-width: 480px) {
            .site-header {
                padding: 6px 8px;
            }
            .nav-wrap {
                padding: 6px 10px;
                border-radius: 12px;
            }
            .logo-link {
                font-size: 15px;
                gap: 6px;
            }
            .logo-mark {
                width: 28px;
                height: 28px;
                font-size: 12px;
            }
            .category-header .heading-block h1 {
                font-size: 22px;
            }
            .category-header .heading-block p {
                font-size: 14px;
            }
            .news-card .news-image img {
                height: 150px;
            }
            .news-card h3 {
                font-size: 16px;
            }
            .news-card .news-excerpt {
                -webkit-line-clamp: 2;
            }
            .section-header h2 {
                font-size: 20px;
            }
            .data-strip .data-number {
                font-size: 24px;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #0B5BD3;
            --primary-hover: #0948a8;
            --primary-light: #EBF2FB;
            --primary-border: #b8cfe8;
            --accent: #F59E0B;
            --accent-deep: #E08A0B;
            --success: #16A34A;
            --danger: #DC2626;
            --text-dark: #0F172A;
            --text-body: #475569;
            --text-muted: #64748B;
            --bg-page: #F5F8FC;
            --bg-card: #FFFFFF;
            --border-light: #E4ECF5;
            --border-input: #DCE6F2;
            --shadow-card: 0 8px 24px rgba(15, 60, 120, 0.08);
            --shadow-hover: 0 14px 32px rgba(15, 60, 120, 0.14);
            --shadow-nav: 0 4px 20px rgba(15, 60, 120, 0.08);
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-nav: 18px;
            --radius-input: 10px;
            --font-stack: 'PingFang SC', 'HarmonyOS Sans SC', 'Microsoft YaHei', 'Noto Sans CJK SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --max-width: 1200px;
            --section-pad-desktop: 72px 24px;
            --section-pad-mobile: 48px 16px;
            --transition-fast: 0.18s ease;
            --transition-medium: 0.3s ease;
        }

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

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

        body {
            font-family: var(--font-stack);
            font-size: 15px;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-page);
            min-height: 100vh;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }

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

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

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

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

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

        /* Header / Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 14px 24px;
            pointer-events: none;
            transition: padding var(--transition-medium);
        }

        .site-header.scrolled {
            padding: 8px 24px;
        }

        .nav-wrap {
            pointer-events: auto;
            max-width: var(--max-width);
            margin: 0 auto;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(8px);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-nav);
            box-shadow: var(--shadow-nav);
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 10px 22px;
            transition: box-shadow var(--transition-medium), padding var(--transition-medium);
        }

        .site-header.scrolled .nav-wrap {
            box-shadow: 0 8px 28px rgba(15, 60, 120, 0.16);
            padding: 6px 20px;
        }

        .logo-link {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            color: var(--text-dark);
            text-decoration: none;
            font-weight: 700;
            font-size: 20px;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

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

        .logo-mark {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--primary) 0%, #1e7ee8 100%);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 800;
            font-size: 16px;
            letter-spacing: 1px;
            flex-shrink: 0;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 6px;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }

        .nav-menu::-webkit-scrollbar {
            display: none;
        }

        .nav-link {
            display: inline-block;
            padding: 8px 14px;
            color: var(--text-body);
            text-decoration: none;
            font-size: 14px;
            font-weight: 500;
            border-radius: 8px;
            white-space: nowrap;
            transition: background var(--transition-fast), color var(--transition-fast);
        }

        .nav-link:hover {
            background: var(--primary-light);
            color: var(--primary);
            text-decoration: none;
        }

        .nav-link.active {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 13px;
            text-decoration: none;
            white-space: nowrap;
            transition: background var(--transition-fast), transform var(--transition-fast);
            flex-shrink: 0;
        }

        .nav-cta:hover {
            background: var(--primary-hover);
            color: #fff;
            text-decoration: none;
            transform: translateY(-1px);
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: 8px;
            background: var(--primary-light);
            pointer-events: auto;
        }

        .nav-toggle span {
            width: 22px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            display: block;
            transition: transform var(--transition-fast), opacity var(--transition-fast);
        }

        /* Breadcrumb */
        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            padding: 20px 0 0;
        }

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

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

        .breadcrumb .sep {
            color: #B0C0D4;
            user-select: none;
        }

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

        /* Main */
        main {
            min-height: 70vh;
        }

        /* Page Header */
        .page-header {
            padding: 32px 0 28px;
            background: var(--bg-page);
            border-bottom: 1px solid var(--border-light);
        }

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

        .page-header h1 {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-dark);
            line-height: 1.25;
            margin-bottom: 12px;
            letter-spacing: 0.01em;
        }

        .page-header .header-desc {
            font-size: 16px;
            color: var(--text-body);
            max-width: 820px;
            line-height: 1.8;
        }

        /* Section Base */
        .section {
            padding: var(--section-pad-desktop);
        }

        .section-alt {
            background: var(--bg-card);
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
        }

        .section-title {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-dark);
            line-height: 1.3;
            margin-bottom: 12px;
            letter-spacing: 0.01em;
        }

        .section-sub {
            font-size: 15px;
            color: var(--text-muted);
            max-width: 760px;
            margin-bottom: 28px;
            line-height: 1.8;
        }

        /* Filter Toolbar */
        .filter-toolbar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            padding: 16px 20px;
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            margin-bottom: 28px;
        }

        .filter-group {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
        }

        .filter-label {
            font-size: 13px;
            font-weight: 600;
            color: var(--text-muted);
            white-space: nowrap;
        }

        .filter-btn {
            padding: 6px 14px;
            border: 1px solid var(--border-light);
            border-radius: 999px;
            font-size: 12px;
            font-weight: 500;
            color: var(--text-body);
            background: #fff;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

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

        .filter-btn.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            font-weight: 600;
        }

        .sort-select {
            padding: 7px 12px;
            border: 1px solid var(--border-input);
            border-radius: var(--radius-input);
            font-size: 13px;
            color: var(--text-body);
            background: #fff;
            outline: none;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        }

        .sort-select:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(11, 91, 211, 0.12);
        }

        /* Data Tool Cards Grid */
        .tools-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .tool-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 22px;
            display: flex;
            flex-direction: column;
            gap: 14px;
            transition: box-shadow var(--transition-medium), transform var(--transition-medium), border-color var(--transition-medium);
        }

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

        .tool-card-top {
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            gap: 12px;
        }

        .tool-icon {
            width: 46px;
            height: 46px;
            background: var(--primary-light);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 20px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .tool-badge {
            padding: 4px 10px;
            background: #FFF7E6;
            color: var(--accent-deep);
            border-radius: 999px;
            font-size: 11px;
            font-weight: 600;
            white-space: nowrap;
        }

        .tool-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-dark);
            line-height: 1.35;
        }

        .tool-card .tool-desc {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
            flex: 1;
        }

        .tool-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            padding-top: 12px;
            border-top: 1px solid var(--border-light);
        }

        .tool-meta span {
            font-size: 12px;
            color: var(--text-muted);
            background: var(--bg-page);
            padding: 4px 10px;
            border-radius: 6px;
        }

        .tool-meta .dimension {
            font-weight: 500;
            color: var(--primary);
            background: var(--primary-light);
        }

        /* Featured Tool */
        .featured-tool {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 28px;
            display: grid;
            grid-template-columns: 1fr 340px;
            gap: 28px;
            align-items: center;
            margin-bottom: 28px;
        }

        .featured-tool .featured-content h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 8px;
        }

        .featured-tool .featured-tag {
            display: inline-block;
            padding: 4px 12px;
            background: #FFF7E6;
            color: var(--accent-deep);
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            margin-bottom: 12px;
        }

        .featured-tool p {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.8;
            margin-bottom: 16px;
        }

        .featured-tool .featured-img {
            border-radius: 14px;
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .featured-tool .featured-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 14px;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 20px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 14px;
            text-decoration: none;
            transition: background var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
            border: none;
        }

        .btn-primary:hover {
            background: var(--primary-hover);
            color: #fff;
            text-decoration: none;
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(11, 91, 211, 0.28);
        }

        /* Data Advantage Strip */
        .data-strip {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 20px;
        }

        .data-strip-item {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 22px;
            text-align: center;
            transition: box-shadow var(--transition-medium), transform var(--transition-medium);
        }

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

        .data-strip-item .data-num {
            font-size: 32px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            letter-spacing: 0.02em;
        }

        .data-strip-item .data-label {
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 6px;
        }

        /* Metrics Grid */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 18px;
        }

        .metric-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: 12px;
            padding: 20px;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        }

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

        .metric-card .metric-name {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 8px;
        }

        .metric-card .metric-desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* Tool Explanation Section */
        .tool-explain-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
            align-items: center;
        }

        .tool-explain-text h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 10px;
        }

        .tool-explain-text p {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.8;
            margin-bottom: 12px;
        }

        .tool-explain-img {
            border-radius: 14px;
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .tool-explain-img img {
            width: 100%;
            height: auto;
            border-radius: 14px;
        }

        /* FAQ */
        .faq-list {
            max-width: 860px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: 12px;
            overflow: hidden;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        }

        .faq-item.open {
            border-color: var(--primary-border);
            box-shadow: var(--shadow-card);
        }

        .faq-question {
            width: 100%;
            padding: 18px 22px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-dark);
            text-align: left;
            background: transparent;
            transition: background var(--transition-fast);
        }

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

        .faq-icon {
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--primary);
            flex-shrink: 0;
            transition: transform var(--transition-medium);
        }

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

        .faq-answer {
            padding: 0 22px 18px;
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.8;
            display: none;
        }

        .faq-item.open .faq-answer {
            display: block;
        }

        /* CTA Section */
        .cta-section {
            background: var(--primary-light);
            border-radius: 20px;
            padding: 40px 32px;
            text-align: center;
            max-width: var(--max-width);
            margin: 0 auto;
        }

        .cta-section h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 10px;
        }

        .cta-section p {
            font-size: 15px;
            color: var(--text-body);
            max-width: 620px;
            margin: 0 auto 22px;
            line-height: 1.8;
        }

        .cta-form {
            display: flex;
            gap: 10px;
            max-width: 480px;
            margin: 0 auto;
            flex-wrap: wrap;
            justify-content: center;
        }

        .cta-form input {
            flex: 1;
            min-width: 220px;
            padding: 12px 16px;
            border: 1px solid var(--border-input);
            border-radius: var(--radius-input);
            font-size: 14px;
            color: var(--text-dark);
            outline: none;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        }

        .cta-form input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(11, 91, 211, 0.12);
        }

        /* Footer */
        .site-footer {
            background: #0F1A2B;
            color: #B8C7DC;
            padding: 48px 0 24px;
            margin-top: 72px;
        }

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

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 28px;
        }

        .footer-brand h3 {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }

        .footer-brand p {
            font-size: 13px;
            color: #94A6C0;
            line-height: 1.8;
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 12px;
        }

        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-col ul li a {
            font-size: 13px;
            color: #B8C7DC;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 18px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 12px;
            color: #94A6C0;
        }

        .footer-bottom a {
            color: #B8C7DC;
            text-decoration: none;
        }

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

        /* Responsive */
        @media (max-width: 1024px) {
            .tools-grid {
                grid-template-columns: repeat(2, 1fr);
            }

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

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

            .featured-tool {
                grid-template-columns: 1fr;
                padding: 22px;
            }

            .featured-tool .featured-img {
                max-height: 260px;
            }

            .tool-explain-grid {
                grid-template-columns: 1fr;
            }

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

        @media (max-width: 768px) {
            .site-header {
                padding: 10px 12px;
            }

            .nav-wrap {
                padding: 8px 14px;
                border-radius: 14px;
            }

            .nav-toggle {
                display: flex;
            }

            .nav-menu {
                display: none;
                position: absolute;
                top: 62px;
                left: 12px;
                right: 12px;
                background: #fff;
                border: 1px solid var(--border-light);
                border-radius: 16px;
                box-shadow: var(--shadow-hover);
                flex-direction: column;
                padding: 12px;
                gap: 4px;
                z-index: 1001;
            }

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

            .nav-link {
                padding: 10px 16px;
                width: 100%;
                text-align: left;
                border-radius: 8px;
                font-size: 14px;
            }

            .nav-cta {
                display: none;
            }

            .section {
                padding: var(--section-pad-mobile);
            }

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

            .page-header h1 {
                font-size: 26px;
            }

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

            .data-strip {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }

            .data-strip-item .data-num {
                font-size: 26px;
            }

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

            .filter-toolbar {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }

            .filter-group {
                width: 100%;
                overflow-x: auto;
                flex-wrap: nowrap;
                scrollbar-width: none;
                -ms-overflow-style: none;
            }

            .filter-group::-webkit-scrollbar {
                display: none;
            }

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

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }

            .cta-section {
                padding: 28px 18px;
                border-radius: 14px;
            }

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

        @media (max-width: 520px) {
            .page-header h1 {
                font-size: 23px;
            }

            .section-title {
                font-size: 20px;
            }

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

            .tool-card {
                padding: 18px;
            }

            .featured-tool {
                padding: 18px;
            }

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

/* roulang page: category3 */
:root {
            --primary: #0B5BD3;
            --primary-hover: #0948a8;
            --primary-light: #EBF2FB;
            --primary-border: #b8cfe8;
            --accent: #F59E0B;
            --accent-deep: #E08A0B;
            --success: #16A34A;
            --danger: #DC2626;
            --text-dark: #0F172A;
            --text-body: #475569;
            --text-muted: #64748B;
            --bg-page: #F5F8FC;
            --bg-card: #FFFFFF;
            --border-light: #E4ECF5;
            --border-input: #DCE6F2;
            --shadow-card: 0 8px 24px rgba(15, 60, 120, 0.08);
            --shadow-hover: 0 14px 32px rgba(15, 60, 120, 0.14);
            --shadow-nav: 0 4px 20px rgba(15, 60, 120, 0.08);
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-nav: 18px;
            --radius-input: 10px;
            --font-stack: 'PingFang SC', 'HarmonyOS Sans SC', 'Microsoft YaHei', 'Noto Sans CJK SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --max-width: 1200px;
            --section-pad-desktop: 88px 24px;
            --section-pad-mobile: 52px 16px;
            --transition-fast: 0.18s ease;
            --transition-medium: 0.3s ease;
        }

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

        body {
            font-family: var(--font-stack);
            font-size: 15px;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-page);
            min-height: 100vh;
            box-sizing: border-box;
        }

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

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }

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

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

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

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

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

        /* Header / Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 14px 24px;
            pointer-events: none;
            transition: padding var(--transition-medium);
        }

        .site-header.scrolled {
            padding: 8px 24px;
        }

        .nav-wrap {
            pointer-events: auto;
            max-width: var(--max-width);
            margin: 0 auto;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(8px);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-nav);
            box-shadow: var(--shadow-nav);
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 10px 22px;
            transition: box-shadow var(--transition-medium), padding var(--transition-medium);
        }

        .site-header.scrolled .nav-wrap {
            box-shadow: 0 8px 28px rgba(15, 60, 120, 0.16);
            padding: 6px 20px;
        }

        .logo-link {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            color: var(--text-dark);
            text-decoration: none;
            font-weight: 700;
            font-size: 20px;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

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

        .logo-mark {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--primary) 0%, #1e7ee8 100%);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 800;
            font-size: 16px;
            letter-spacing: 1px;
            flex-shrink: 0;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 6px;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }

        .nav-menu::-webkit-scrollbar {
            display: none;
        }

        .nav-link {
            display: inline-block;
            padding: 8px 14px;
            color: var(--text-body);
            text-decoration: none;
            font-size: 14px;
            font-weight: 500;
            border-radius: 8px;
            white-space: nowrap;
            transition: background var(--transition-fast), color var(--transition-fast);
        }

        .nav-link:hover {
            background: var(--primary-light);
            color: var(--primary);
            text-decoration: none;
        }

        .nav-link.active {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 13px;
            text-decoration: none;
            white-space: nowrap;
            transition: background var(--transition-fast), transform var(--transition-fast);
            flex-shrink: 0;
        }

        .nav-cta:hover {
            background: var(--primary-hover);
            color: #fff;
            text-decoration: none;
            transform: translateY(-1px);
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: 8px;
            background: var(--primary-light);
            pointer-events: auto;
        }

        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: transform var(--transition-fast), opacity var(--transition-fast);
        }

        /* Breadcrumb */
        .breadcrumb-section {
            padding: 28px 24px 0;
        }

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

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

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

        .breadcrumb .separator {
            color: var(--border-light);
            font-size: 11px;
            user-select: none;
        }

        .breadcrumb .current {
            color: var(--primary);
            font-weight: 600;
        }

        /* Category Header */
        .category-header {
            padding: 28px 24px 12px;
        }

        .category-header .container {
            max-width: var(--max-width);
            margin: 0 auto;
        }

        .category-header-inner {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 36px 40px 32px;
            box-shadow: var(--shadow-card);
            display: grid;
            grid-template-columns: 1fr 360px;
            gap: 32px;
            align-items: start;
        }

        .category-header h1 {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-dark);
            line-height: 1.25;
            letter-spacing: 0.01em;
            margin-bottom: 14px;
        }

        .category-header .header-desc {
            font-size: 15px;
            line-height: 1.85;
            color: var(--text-body);
            margin-bottom: 18px;
        }

        .header-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .header-tag {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            padding: 5px 12px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 20px;
            font-size: 12px;
            font-weight: 500;
            white-space: nowrap;
        }

        .header-side-image {
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            min-height: 200px;
        }

        .header-side-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: var(--radius-card);
        }

        /* Filter Toolbar */
        .filter-section {
            padding: 16px 24px 8px;
        }

        .filter-section .container {
            max-width: var(--max-width);
            margin: 0 auto;
        }

        .filter-bar {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: 14px;
            padding: 16px 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            box-shadow: 0 2px 8px rgba(15, 60, 120, 0.04);
        }

        .filter-group {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }

        .filter-label {
            font-size: 13px;
            font-weight: 600;
            color: var(--text-muted);
            margin-right: 4px;
            white-space: nowrap;
        }

        .filter-btn {
            padding: 7px 14px;
            border-radius: 8px;
            font-size: 13px;
            font-weight: 500;
            color: var(--text-body);
            background: var(--bg-page);
            border: 1px solid var(--border-light);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

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

        .filter-btn.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            font-weight: 600;
        }

        .sort-select {
            padding: 7px 12px;
            border-radius: 8px;
            font-size: 13px;
            color: var(--text-body);
            background: var(--bg-page);
            border: 1px solid var(--border-light);
            outline: none;
            cursor: pointer;
            transition: border-color var(--transition-fast);
        }

        .sort-select:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 2px rgba(11, 91, 211, 0.12);
        }

        /* Schedule List */
        .schedule-section {
            padding: 16px 24px 8px;
        }

        .schedule-section .container {
            max-width: var(--max-width);
            margin: 0 auto;
        }

        .section-heading-row {
            display: flex;
            align-items: baseline;
            justify-content: space-between;
            gap: 16px;
            margin-bottom: 20px;
            flex-wrap: wrap;
        }

        .section-heading-row h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-dark);
            line-height: 1.35;
            letter-spacing: 0.01em;
        }

        .section-heading-row .heading-note {
            font-size: 13px;
            color: var(--text-muted);
        }

        .schedule-cards {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
            gap: 18px;
        }

        .schedule-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            display: flex;
            flex-direction: column;
            transition: box-shadow var(--transition-medium), transform var(--transition-medium), border-color var(--transition-fast);
            cursor: pointer;
        }

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

        .schedule-card-image {
            height: 150px;
            overflow: hidden;
            position: relative;
        }

        .schedule-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
            transition: transform var(--transition-medium);
        }

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

        .schedule-card-body {
            padding: 18px 20px 20px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            flex: 1;
        }

        .schedule-card-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 10px;
            flex-wrap: wrap;
        }

        .schedule-league {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        .schedule-status {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 11px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 20px;
            white-space: nowrap;
        }

        .status-upcoming {
            background: var(--primary-light);
            color: var(--primary);
        }

        .status-live {
            background: #E6F9EF;
            color: var(--success);
        }

        .status-live .live-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--success);
            animation: pulse-dot 1.2s ease-in-out infinite;
        }

        @keyframes pulse-dot {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.35; }
        }

        .status-finished {
            background: #F1F5F9;
            color: var(--text-muted);
        }

        .schedule-matchup {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 8px;
            margin: 4px 0 2px;
        }

        .schedule-team {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-dark);
            text-align: center;
            flex: 1;
            min-width: 0;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .schedule-vs {
            font-size: 13px;
            font-weight: 700;
            color: var(--accent-deep);
            background: #FFF8EB;
            padding: 2px 10px;
            border-radius: 6px;
            flex-shrink: 0;
        }

        .schedule-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
            font-size: 12px;
            color: var(--text-muted);
            padding-top: 8px;
            border-top: 1px solid var(--border-light);
        }

        .schedule-meta span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .schedule-card-link {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            margin-top: auto;
            padding-top: 8px;
            text-decoration: none;
        }

        .schedule-card-link:hover {
            text-decoration: none;
            color: var(--primary-hover);
        }

        .list-more-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 22px;
            background: var(--bg-card);
            border: 1px solid var(--primary-border);
            border-radius: var(--radius-btn);
            color: var(--primary);
            font-size: 14px;
            font-weight: 600;
            text-decoration: none;
            transition: all var(--transition-fast);
            margin-top: 20px;
        }

        .list-more-btn:hover {
            background: var(--primary-light);
            border-color: var(--primary);
            text-decoration: none;
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(11, 91, 211, 0.12);
        }

        /* Upcoming Highlight */
        .upcoming-section {
            padding: 32px 24px 8px;
        }

        .upcoming-section .container {
            max-width: var(--max-width);
            margin: 0 auto;
        }

        .upcoming-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
        }

        .upcoming-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 18px 20px;
            display: flex;
            flex-direction: column;
            gap: 8px;
            box-shadow: 0 4px 14px rgba(15, 60, 120, 0.05);
            transition: box-shadow var(--transition-medium), transform var(--transition-medium);
        }

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

        .upcoming-card .upcoming-date {
            font-size: 12px;
            font-weight: 600;
            color: var(--accent-deep);
            text-transform: uppercase;
            letter-spacing: 0.04em;
        }

        .upcoming-card .upcoming-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-dark);
            line-height: 1.45;
        }

        .upcoming-card .upcoming-info {
            font-size: 13px;
            color: var(--text-body);
            line-height: 1.6;
        }

        .upcoming-card .upcoming-teams {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            padding-top: 4px;
            border-top: 1px solid var(--border-light);
        }

        /* Review Section */
        .review-section {
            padding: 32px 24px 8px;
        }

        .review-section .container {
            max-width: var(--max-width);
            margin: 0 auto;
        }

        .review-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 18px;
        }

        .review-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            box-shadow: 0 4px 14px rgba(15, 60, 120, 0.05);
            transition: box-shadow var(--transition-medium);
        }

        .review-card:hover {
            box-shadow: var(--shadow-hover);
        }

        .review-card-image {
            height: 140px;
            overflow: hidden;
        }

        .review-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
        }

        .review-card-body {
            padding: 16px 20px 18px;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .review-card .review-tag {
            font-size: 11px;
            font-weight: 600;
            color: var(--text-muted);
            background: #F1F5F9;
            padding: 2px 10px;
            border-radius: 20px;
            align-self: flex-start;
        }

        .review-card .review-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-dark);
            line-height: 1.4;
        }

        .review-card .review-summary {
            font-size: 13px;
            color: var(--text-body);
            line-height: 1.7;
        }

        /* Data Advantage Strip */
        .data-advantage-section {
            padding: 32px 24px 8px;
        }

        .data-advantage-section .container {
            max-width: var(--max-width);
            margin: 0 auto;
        }

        .data-advantage-strip {
            background: linear-gradient(135deg, var(--primary-light) 0%, #F8FBFE 60%, #FDF6EA 100%);
            border: 1px solid var(--primary-border);
            border-radius: var(--radius-card);
            padding: 28px 32px;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }

        .data-item .data-number {
            font-size: 32px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            letter-spacing: 0.02em;
        }

        .data-item .data-number.accent-number {
            color: var(--accent-deep);
        }

        .data-item .data-label {
            font-size: 13px;
            color: var(--text-muted);
            font-weight: 500;
            margin-top: 4px;
        }

        /* FAQ Section */
        .faq-section {
            padding: 40px 24px 8px;
        }

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

        .faq-section h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-dark);
            text-align: center;
            margin-bottom: 8px;
        }

        .faq-section .faq-subtitle {
            text-align: center;
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 24px;
        }

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: 12px;
            overflow: hidden;
            transition: box-shadow var(--transition-fast), border-color var(--transition-fast);
        }

        .faq-item:hover {
            box-shadow: 0 4px 16px rgba(15, 60, 120, 0.08);
        }

        .faq-item.active {
            border-color: var(--primary-border);
            box-shadow: 0 4px 18px rgba(15, 60, 120, 0.1);
            background: var(--primary-light);
        }

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

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

        .faq-icon {
            flex-shrink: 0;
            width: 22px;
            height: 22px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 14px;
            font-weight: 700;
            transition: transform var(--transition-fast);
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-medium), padding var(--transition-medium);
            padding: 0 20px;
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.75;
        }

        .faq-item.active .faq-answer {
            max-height: 220px;
            padding: 0 20px 18px;
        }

        /* CTA Section */
        .cta-section {
            padding: 40px 24px 60px;
        }

        .cta-section .container {
            max-width: var(--max-width);
            margin: 0 auto;
        }

        .cta-card {
            background: linear-gradient(135deg, var(--primary) 0%, #1e7ee8 100%);
            border-radius: var(--radius-card);
            padding: 40px 36px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 28px;
            flex-wrap: wrap;
            box-shadow: 0 16px 40px rgba(11, 91, 211, 0.2);
        }

        .cta-card h2 {
            font-size: 24px;
            font-weight: 700;
            color: #fff;
            line-height: 1.4;
            margin-bottom: 6px;
        }

        .cta-card p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 480px;
            line-height: 1.7;
        }

        .cta-actions {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }

        .cta-btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 11px 22px;
            background: #fff;
            color: var(--primary);
            border-radius: var(--radius-btn);
            font-weight: 700;
            font-size: 14px;
            text-decoration: none;
            transition: transform var(--transition-fast), box-shadow var(--transition-fast);
        }

        .cta-btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
            text-decoration: none;
            color: var(--primary-hover);
        }

        .cta-btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 11px 22px;
            background: transparent;
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.6);
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 14px;
            text-decoration: none;
            transition: background var(--transition-fast), border-color var(--transition-fast);
        }

        .cta-btn-secondary:hover {
            background: rgba(255, 255, 255, 0.15);
            border-color: #fff;
            text-decoration: none;
            color: #fff;
        }

        /* Footer */
        .site-footer {
            background: #0F172A;
            color: #CBD5E1;
            padding: 48px 24px 32px;
            margin-top: 12px;
        }

        .site-footer .container {
            max-width: var(--max-width);
            margin: 0 auto;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-brand h3 {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }

        .footer-brand p {
            font-size: 13px;
            line-height: 1.8;
            color: #94A3B8;
            max-width: 280px;
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: #F1F5F9;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-col ul li a {
            font-size: 13px;
            color: #94A3B8;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        .footer-col ul li a:hover {
            color: #fff;
            text-decoration: none;
        }

        .footer-bottom {
            border-top: 1px solid #1E293B;
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            font-size: 12px;
            color: #64748B;
        }

        .footer-bottom a {
            color: #94A3B8;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        .footer-bottom a:hover {
            color: #fff;
            text-decoration: none;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .category-header-inner {
                grid-template-columns: 1fr;
                gap: 20px;
                padding: 28px 24px;
            }

            .header-side-image {
                min-height: 180px;
                max-height: 240px;
            }

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

            .data-advantage-strip {
                grid-template-columns: repeat(2, 1fr);
                padding: 22px 20px;
                gap: 18px;
            }

            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
        }

        @media (max-width: 768px) {
            .site-header {
                padding: 10px 16px;
            }

            .site-header.scrolled {
                padding: 6px 16px;
            }

            .nav-wrap {
                padding: 8px 14px;
                border-radius: 14px;
            }

            .nav-toggle {
                display: flex;
            }

            .nav-menu {
                display: none;
                position: absolute;
                top: calc(100% + 8px);
                left: 16px;
                right: 16px;
                background: #fff;
                border: 1px solid var(--border-light);
                border-radius: 14px;
                box-shadow: var(--shadow-hover);
                padding: 10px;
                flex-direction: column;
                align-items: stretch;
                gap: 2px;
            }

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

            .nav-link {
                padding: 10px 14px;
                font-size: 14px;
                border-radius: 8px;
            }

            .nav-cta {
                padding: 7px 12px;
                font-size: 12px;
            }

            .category-header {
                padding: 16px 16px 6px;
            }

            .category-header-inner {
                padding: 22px 18px;
                border-radius: 14px;
            }

            .category-header h1 {
                font-size: 24px;
            }

            .category-header .header-desc {
                font-size: 14px;
            }

            .filter-section {
                padding: 12px 16px 4px;
            }

            .filter-bar {
                flex-direction: column;
                align-items: stretch;
                gap: 10px;
                padding: 14px 16px;
            }

            .filter-group {
                gap: 6px;
            }

            .schedule-section {
                padding: 12px 16px 4px;
            }

            .section-heading-row h2 {
                font-size: 20px;
            }

            .schedule-cards {
                grid-template-columns: 1fr;
                gap: 14px;
            }

            .upcoming-section {
                padding: 24px 16px 4px;
            }

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

            .review-section {
                padding: 24px 16px 4px;
            }

            .review-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }

            .data-advantage-section {
                padding: 24px 16px 4px;
            }

            .data-advantage-strip {
                grid-template-columns: repeat(2, 1fr);
                padding: 18px 14px;
                gap: 14px;
            }

            .data-item .data-number {
                font-size: 24px;
            }

            .faq-section {
                padding: 32px 16px 4px;
            }

            .faq-section h2 {
                font-size: 20px;
            }

            .cta-section {
                padding: 32px 16px 48px;
            }

            .cta-card {
                padding: 28px 20px;
                flex-direction: column;
                align-items: flex-start;
                gap: 16px;
            }

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

            .site-footer {
                padding: 36px 16px 24px;
            }

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

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
        }

        @media (max-width: 520px) {
            .category-header-inner {
                padding: 18px 14px;
            }

            .category-header h1 {
                font-size: 21px;
            }

            .header-tags {
                gap: 5px;
            }

            .header-tag {
                font-size: 11px;
                padding: 4px 9px;
            }

            .schedule-card-body {
                padding: 14px 14px 16px;
            }

            .schedule-matchup {
                gap: 4px;
            }

            .schedule-team {
                font-size: 13px;
            }

            .data-advantage-strip {
                grid-template-columns: 1fr;
                gap: 12px;
            }

            .cta-card {
                padding: 22px 16px;
            }

            .cta-btn-primary,
            .cta-btn-secondary {
                width: 100%;
                justify-content: center;
                padding: 10px 16px;
                font-size: 13px;
            }
        }

/* roulang page: category5 */
:root {
            --primary: #0B5BD3;
            --primary-hover: #0948a8;
            --primary-light: #EBF2FB;
            --primary-border: #b8cfe8;
            --accent: #F59E0B;
            --accent-deep: #E08A0B;
            --success: #16A34A;
            --danger: #DC2626;
            --text-dark: #0F172A;
            --text-body: #475569;
            --text-muted: #64748B;
            --bg-page: #F5F8FC;
            --bg-card: #FFFFFF;
            --border-light: #E4ECF5;
            --border-input: #DCE6F2;
            --shadow-card: 0 8px 24px rgba(15, 60, 120, 0.08);
            --shadow-hover: 0 14px 32px rgba(15, 60, 120, 0.14);
            --shadow-nav: 0 4px 20px rgba(15, 60, 120, 0.08);
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-nav: 18px;
            --radius-input: 10px;
            --font-stack: 'PingFang SC', 'HarmonyOS Sans SC', 'Microsoft YaHei', 'Noto Sans CJK SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --max-width: 1200px;
            --section-pad-desktop: 88px 24px;
            --section-pad-mobile: 52px 16px;
            --transition-fast: 0.18s ease;
            --transition-medium: 0.3s ease;
        }

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

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

        body {
            font-family: var(--font-stack);
            font-size: 15px;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-page);
            min-height: 100vh;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }

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

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

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

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

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

        /* Header / Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 14px 24px;
            pointer-events: none;
            transition: padding var(--transition-medium);
        }

        .site-header.scrolled {
            padding: 8px 24px;
        }

        .nav-wrap {
            pointer-events: auto;
            max-width: var(--max-width);
            margin: 0 auto;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-nav);
            box-shadow: var(--shadow-nav);
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 10px 22px;
            transition: box-shadow var(--transition-medium), padding var(--transition-medium);
        }

        .site-header.scrolled .nav-wrap {
            box-shadow: 0 8px 28px rgba(15, 60, 120, 0.16);
            padding: 6px 20px;
        }

        .logo-link {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            color: var(--text-dark);
            text-decoration: none;
            font-weight: 700;
            font-size: 20px;
            letter-spacing: 0.02em;
            white-space: nowrap;
            flex-shrink: 0;
        }

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

        .logo-mark {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--primary) 0%, #1e7ee8 100%);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 800;
            font-size: 16px;
            letter-spacing: 1px;
            flex-shrink: 0;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 6px;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }

        .nav-menu::-webkit-scrollbar {
            display: none;
        }

        .nav-link {
            display: inline-block;
            padding: 8px 14px;
            color: var(--text-body);
            text-decoration: none;
            font-size: 14px;
            font-weight: 500;
            border-radius: 8px;
            white-space: nowrap;
            transition: background var(--transition-fast), color var(--transition-fast);
        }

        .nav-link:hover {
            background: var(--primary-light);
            color: var(--primary);
            text-decoration: none;
        }

        .nav-link.active {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 13px;
            text-decoration: none;
            white-space: nowrap;
            transition: background var(--transition-fast), transform var(--transition-fast);
            flex-shrink: 0;
        }

        .nav-cta:hover {
            background: var(--primary-hover);
            color: #fff;
            text-decoration: none;
            transform: translateY(-1px);
        }

        .nav-cta:active {
            transform: translateY(0);
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: 8px;
            border: 1px solid var(--border-light);
            background: #fff;
            pointer-events: auto;
        }

        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--text-dark);
            border-radius: 2px;
            transition: var(--transition-fast);
        }

        .nav-toggle[aria-expanded="true"] span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle[aria-expanded="true"] span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle[aria-expanded="true"] span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* Breadcrumb */
        .breadcrumb-section {
            padding: 24px 0 8px;
        }

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

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

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

        .breadcrumb .separator {
            color: var(--border-light);
            user-select: none;
        }

        .breadcrumb .current {
            color: var(--text-dark);
            font-weight: 600;
        }

        /* Compact Category Header */
        .category-header {
            padding: 32px 0 40px;
        }

        .category-header-inner {
            max-width: 820px;
        }

        .category-header .section-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 20px;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }

        .category-header h1 {
            font-size: 36px;
            font-weight: 700;
            color: var(--text-dark);
            line-height: 1.25;
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }

        .category-header .category-desc {
            font-size: 16px;
            color: var(--text-body);
            line-height: 1.8;
            margin-bottom: 0;
        }

        /* Section Common Styles */
        .section {
            padding: var(--section-pad-desktop);
        }

        .section-alt {
            background: #fff;
        }

        .section-heading {
            margin-bottom: 28px;
        }

        .section-heading h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-dark);
            line-height: 1.3;
            letter-spacing: -0.01em;
            margin-bottom: 10px;
        }

        .section-heading p {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 720px;
        }

        .section-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 20px;
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }

        /* Filter Toolbar */
        .filter-toolbar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 16px 20px;
            margin-bottom: 28px;
        }

        .filter-group {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }

        .filter-label {
            font-size: 13px;
            color: var(--text-muted);
            font-weight: 500;
            margin-right: 4px;
        }

        .filter-btn {
            padding: 7px 16px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
            color: var(--text-body);
            background: var(--bg-page);
            border: 1px solid var(--border-light);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

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

        .filter-btn.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            font-weight: 600;
        }

        .sort-select {
            padding: 7px 14px;
            border-radius: 8px;
            border: 1px solid var(--border-input);
            background: #fff;
            color: var(--text-body);
            font-size: 13px;
            font-weight: 500;
            cursor: pointer;
            transition: border-color var(--transition-fast);
            min-width: 140px;
        }

        .sort-select:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(11, 91, 211, 0.1);
        }

        /* Stats Tool Cards Grid */
        .tools-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .tool-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 26px 24px;
            transition: box-shadow var(--transition-medium), transform var(--transition-medium), border-color var(--transition-medium);
            display: flex;
            flex-direction: column;
            position: relative;
            overflow: hidden;
        }

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

        .tool-card.featured {
            grid-column: span 2;
            flex-direction: row;
            gap: 28px;
            align-items: center;
        }

        .tool-card .tool-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 18px;
            flex-shrink: 0;
        }

        .tool-card.featured .tool-icon {
            width: 64px;
            height: 64px;
            font-size: 28px;
            margin-bottom: 0;
        }

        .tool-card .tool-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 14px;
            background: #f0f9ff;
            color: var(--primary);
            margin-bottom: 12px;
            align-self: flex-start;
        }

        .tool-card .tool-tag.hot {
            background: #fef3c7;
            color: var(--accent-deep);
        }

        .tool-card .tool-tag.new {
            background: #dcfce7;
            color: var(--success);
        }

        .tool-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-dark);
            line-height: 1.35;
            margin-bottom: 10px;
        }

        .tool-card .tool-desc {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 16px;
            flex-grow: 1;
        }

        .tool-card .tool-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }

        .tool-card .tool-meta span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

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

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

        .tool-card.featured .tool-content {
            flex: 1;
        }

        .tool-card.featured .tool-image {
            width: 260px;
            height: 180px;
            object-fit: cover;
            border-radius: 12px;
            flex-shrink: 0;
        }

        /* Metrics Section */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 16px;
            margin-top: 8px;
        }

        .metric-item {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 20px 18px;
            text-align: center;
            transition: box-shadow var(--transition-medium), transform var(--transition-medium);
        }

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

        .metric-value {
            font-size: 24px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.3;
            margin-bottom: 6px;
        }

        .metric-label {
            font-size: 13px;
            color: var(--text-muted);
            font-weight: 500;
            line-height: 1.4;
        }

        /* Tool Explanation Section */
        .explanation-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            align-items: center;
        }

        .explanation-content h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-dark);
            line-height: 1.35;
            margin-bottom: 16px;
        }

        .explanation-content p {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.8;
            margin-bottom: 16px;
        }

        .explanation-content ul {
            list-style: none;
            padding: 0;
            margin: 0 0 20px;
        }

        .explanation-content ul li {
            position: relative;
            padding-left: 24px;
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 8px;
        }

        .explanation-content ul li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--primary);
        }

        .explanation-image img {
            width: 100%;
            height: auto;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
        }

        /* Data Advantage Bar */
        .advantage-bar {
            background: linear-gradient(135deg, var(--primary) 0%, #1668E3 50%, #1e7ee8 100%);
            border-radius: var(--radius-card);
            padding: 36px 40px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
            box-shadow: 0 12px 32px rgba(11, 91, 211, 0.25);
        }

        .advantage-bar .advantage-text {
            flex: 1;
            min-width: 260px;
        }

        .advantage-bar .advantage-text h3 {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            line-height: 1.35;
            margin-bottom: 8px;
        }

        .advantage-bar .advantage-text p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.7;
            margin: 0;
        }

        .advantage-bar .advantage-stats {
            display: flex;
            gap: 28px;
            flex-wrap: wrap;
        }

        .advantage-bar .advantage-stat {
            text-align: center;
        }

        .advantage-bar .advantage-stat .num {
            font-size: 28px;
            font-weight: 700;
            color: #fff;
            line-height: 1.2;
        }

        .advantage-bar .advantage-stat .label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.75);
            font-weight: 500;
        }

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

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: 12px;
            overflow: hidden;
            transition: box-shadow var(--transition-fast), border-color var(--transition-fast);
        }

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

        .faq-item.active {
            border-color: var(--primary-border);
            box-shadow: var(--shadow-card);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 16px 20px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-dark);
            cursor: pointer;
            user-select: none;
            text-align: left;
            width: 100%;
            background: transparent;
            transition: background var(--transition-fast);
        }

        .faq-question:hover {
            background: var(--bg-page);
        }

        .faq-item.active .faq-question {
            background: var(--primary-light);
        }

        .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 16px;
            font-weight: 700;
            transition: transform var(--transition-medium);
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.3s ease;
            padding: 0 20px;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 20px 18px;
        }

        .faq-answer p {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.8;
            margin: 0;
        }

        /* CTA / Subscribe Section */
        .cta-section {
            padding: var(--section-pad-desktop);
        }

        .cta-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 40px 36px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 28px;
            flex-wrap: wrap;
            position: relative;
            overflow: hidden;
        }

        .cta-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--primary) 0%, var(--accent) 100%);
        }

        .cta-info h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-dark);
            line-height: 1.35;
            margin-bottom: 8px;
        }

        .cta-info p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0;
            max-width: 520px;
        }

        .cta-form {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            min-width: 280px;
            flex: 1;
            max-width: 400px;
        }

        .cta-form input {
            flex: 1;
            min-width: 180px;
            padding: 10px 16px;
            border-radius: var(--radius-input);
            border: 1px solid var(--border-input);
            background: #fff;
            font-size: 14px;
            color: var(--text-dark);
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        }

        .cta-form input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(11, 91, 211, 0.12);
        }

        .cta-form input::placeholder {
            color: #94a3b8;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            background: var(--primary);
            color: #fff;
            padding: 10px 22px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 14px;
            transition: background var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
            white-space: nowrap;
            text-decoration: none;
            border: none;
            cursor: pointer;
        }

        .btn-primary:hover {
            background: var(--primary-hover);
            color: #fff;
            text-decoration: none;
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(11, 91, 211, 0.3);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(11, 91, 211, 0.2);
        }

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

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            background: transparent;
            color: var(--primary);
            padding: 9px 20px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 14px;
            border: 1px solid var(--primary);
            transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
            white-space: nowrap;
            text-decoration: none;
            cursor: pointer;
        }

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

        .btn-secondary:active {
            transform: translateY(0);
        }

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

        /* Footer */
        .site-footer {
            background: #0F172A;
            color: rgba(255, 255, 255, 0.7);
            padding: 48px 24px 24px;
        }

        .footer-grid {
            max-width: var(--max-width);
            margin: 0 auto;
            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, 0.65);
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
        }

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

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

        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.65);
            text-decoration: none;
            font-size: 14px;
            transition: color var(--transition-fast);
        }

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

        .footer-bottom {
            max-width: var(--max-width);
            margin: 0 auto;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.65);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

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

        /* Responsive Styles */
        @media (max-width: 1024px) {
            .tools-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .tool-card.featured {
                grid-column: span 2;
            }

            .metrics-grid {
                grid-template-columns: repeat(3, 1fr);
            }

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

            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr;
            }

            .footer-brand {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-pad-desktop: 56px 16px;
            }

            .site-header {
                padding: 10px 12px;
            }

            .site-header.scrolled {
                padding: 6px 12px;
            }

            .nav-wrap {
                padding: 8px 16px;
                flex-wrap: wrap;
                gap: 8px;
            }

            .nav-menu {
                display: none;
                width: 100%;
                order: 3;
                flex-direction: column;
                align-items: stretch;
                gap: 2px;
                padding: 8px 0;
                border-top: 1px solid var(--border-light);
                margin-top: 4px;
            }

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

            .nav-link {
                padding: 10px 14px;
                text-align: left;
                border-radius: 8px;
            }

            .nav-cta {
                font-size: 12px;
                padding: 7px 12px;
            }

            .nav-toggle {
                display: flex;
            }

            .category-header h1 {
                font-size: 28px;
            }

            .section-heading h2 {
                font-size: 23px;
            }

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

            .tool-card.featured {
                grid-column: span 1;
                flex-direction: column;
                align-items: flex-start;
            }

            .tool-card.featured .tool-image {
                width: 100%;
                height: 200px;
            }

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

            .filter-toolbar {
                flex-direction: column;
                align-items: stretch;
            }

            .filter-group {
                justify-content: center;
            }

            .advantage-bar {
                padding: 28px 24px;
                flex-direction: column;
                align-items: flex-start;
            }

            .advantage-bar .advantage-stats {
                gap: 16px;
                width: 100%;
                justify-content: space-between;
            }

            .cta-card {
                flex-direction: column;
                align-items: flex-start;
                padding: 28px 24px;
            }

            .cta-form {
                width: 100%;
                min-width: 0;
                max-width: none;
            }

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

            .footer-brand {
                grid-column: 1 / -1;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
        }

        @media (max-width: 520px) {
            :root {
                --section-pad-mobile: 40px 12px;
            }

            .container {
                padding: 0 16px;
            }

            .category-header h1 {
                font-size: 24px;
            }

            .category-header .category-desc {
                font-size: 14px;
            }

            .section-heading h2 {
                font-size: 20px;
            }

            .metrics-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }

            .metric-item {
                padding: 14px 12px;
            }

            .metric-value {
                font-size: 20px;
            }

            .advantage-bar .advantage-stat .num {
                font-size: 22px;
            }

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

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

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

            .tool-card {
                padding: 20px 18px;
            }

            .faq-question {
                padding: 14px 16px;
                font-size: 14px;
            }

            .faq-answer p {
                font-size: 13px;
            }
        }

/* roulang page: category6 */
:root {
            --primary: #0B5BD3;
            --primary-hover: #0948a8;
            --primary-light: #EBF2FB;
            --primary-border: #b8cfe8;
            --accent: #F59E0B;
            --accent-deep: #E08A0B;
            --success: #16A34A;
            --danger: #DC2626;
            --text-dark: #0F172A;
            --text-body: #475569;
            --text-muted: #64748B;
            --bg-page: #F5F8FC;
            --bg-card: #FFFFFF;
            --border-light: #E4ECF5;
            --border-input: #DCE6F2;
            --shadow-card: 0 8px 24px rgba(15, 60, 120, 0.08);
            --shadow-hover: 0 14px 32px rgba(15, 60, 120, 0.14);
            --shadow-nav: 0 4px 20px rgba(15, 60, 120, 0.08);
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-nav: 18px;
            --radius-input: 10px;
            --font-stack: 'PingFang SC', 'HarmonyOS Sans SC', 'Microsoft YaHei', 'Noto Sans CJK SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --max-width: 1200px;
            --section-pad-desktop: 72px 24px;
            --section-pad-mobile: 48px 16px;
            --transition-fast: 0.18s ease;
            --transition-medium: 0.3s ease;
        }

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

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

        body {
            font-family: var(--font-stack);
            font-size: 15px;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-page);
            min-height: 100vh;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }

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

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

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

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

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

        /* Header / Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 14px 24px;
            pointer-events: none;
            transition: padding var(--transition-medium);
        }

        .site-header.scrolled {
            padding: 8px 24px;
        }

        .nav-wrap {
            pointer-events: auto;
            max-width: var(--max-width);
            margin: 0 auto;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-nav);
            box-shadow: var(--shadow-nav);
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 10px 22px;
            transition: box-shadow var(--transition-medium), padding var(--transition-medium);
        }

        .site-header.scrolled .nav-wrap {
            box-shadow: 0 8px 28px rgba(15, 60, 120, 0.16);
            padding: 6px 20px;
        }

        .logo-link {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            color: var(--text-dark);
            text-decoration: none;
            font-weight: 700;
            font-size: 20px;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

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

        .logo-mark {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--primary) 0%, #1e7ee8 100%);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 800;
            font-size: 16px;
            letter-spacing: 1px;
            flex-shrink: 0;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 6px;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }

        .nav-menu::-webkit-scrollbar {
            display: none;
        }

        .nav-link {
            display: inline-block;
            padding: 8px 14px;
            color: var(--text-body);
            text-decoration: none;
            font-size: 14px;
            font-weight: 500;
            border-radius: 8px;
            white-space: nowrap;
            transition: background var(--transition-fast), color var(--transition-fast);
        }

        .nav-link:hover {
            background: var(--primary-light);
            color: var(--primary);
            text-decoration: none;
        }

        .nav-link.active {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 13px;
            text-decoration: none;
            white-space: nowrap;
            transition: background var(--transition-fast), transform var(--transition-fast);
            flex-shrink: 0;
        }

        .nav-cta:hover {
            background: var(--primary-hover);
            color: #fff;
            text-decoration: none;
            transform: translateY(-1px);
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 10px;
            border-radius: 8px;
            background: var(--primary-light);
            transition: background var(--transition-fast);
            pointer-events: auto;
        }

        .nav-toggle:hover {
            background: #dbe8f7;
        }

        .nav-toggle span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: transform var(--transition-fast), opacity var(--transition-fast);
        }

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

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

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

        /* Breadcrumb */
        .breadcrumb-bar {
            background: transparent;
            padding: 16px 0 0;
            margin-bottom: 8px;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
            font-size: 13px;
            color: var(--text-muted);
            list-style: none;
        }

        .breadcrumb li {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .breadcrumb li + li::before {
            content: "/";
            color: #b6c4d6;
            font-size: 12px;
        }

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

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

        .breadcrumb .current {
            color: var(--text-dark);
            font-weight: 600;
        }

        /* Compact Category Header */
        .category-header {
            background: linear-gradient(135deg, #EEF4FC 0%, #F8FAFE 60%, #F5F8FC 100%);
            border-bottom: 1px solid var(--border-light);
            padding: 28px 0 32px;
            margin-bottom: 0;
        }

        .category-header-inner {
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
        }

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

        .category-header h1 {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-dark);
            line-height: 1.25;
            margin-bottom: 10px;
            letter-spacing: 0.01em;
        }

        .category-header .sub-desc {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.7;
            max-width: 680px;
        }

        .category-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 5px 12px;
            border-radius: 999px;
            letter-spacing: 0.03em;
            margin-bottom: 12px;
        }

        /* Stats Hero Mini Panel */
        .stats-hero-panel {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 18px 20px;
            display: flex;
            align-items: center;
            gap: 20px;
            flex-shrink: 0;
            min-width: 240px;
        }

        .stats-hero-panel .panel-icon {
            width: 48px;
            height: 48px;
            background: var(--primary-light);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            flex-shrink: 0;
        }

        .stats-hero-panel .panel-info h3 {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 2px;
        }

        .stats-hero-panel .panel-info p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.5;
        }

        .stats-hero-panel .panel-value {
            font-size: 22px;
            font-weight: 700;
            color: var(--accent-deep);
            line-height: 1.2;
            margin-left: auto;
            white-space: nowrap;
        }

        /* Section General */
        .section {
            padding: var(--section-pad-desktop);
        }

        .section-alt {
            background: #fff;
        }

        .section-label {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-light);
            padding: 4px 12px;
            border-radius: 999px;
            letter-spacing: 0.04em;
            margin-bottom: 12px;
            text-transform: uppercase;
        }

        .section-title {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-dark);
            line-height: 1.3;
            margin-bottom: 10px;
            letter-spacing: 0.01em;
        }

        .section-sub {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 720px;
            margin-bottom: 28px;
        }

        /* Filter Toolbar */
        .filter-toolbar {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: 14px;
            padding: 12px 16px;
            margin-bottom: 28px;
            box-shadow: 0 2px 10px rgba(15, 60, 120, 0.04);
        }

        .filter-toolbar .filter-label {
            font-size: 13px;
            font-weight: 600;
            color: var(--text-muted);
            margin-right: 4px;
            white-space: nowrap;
        }

        .filter-btn {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 6px 14px;
            background: var(--bg-page);
            border: 1px solid var(--border-light);
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
            color: var(--text-body);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

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

        .filter-btn.active {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            font-weight: 600;
        }

        .filter-sort {
            margin-left: auto;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .filter-sort select {
            padding: 7px 12px;
            border: 1px solid var(--border-input);
            border-radius: var(--radius-input);
            font-size: 13px;
            color: var(--text-body);
            background: #fff;
            cursor: pointer;
            outline: none;
            transition: border-color var(--transition-fast);
        }

        .filter-sort select:focus {
            border-color: var(--primary);
        }

        /* Tool Cards Grid */
        .tool-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .tool-card {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: box-shadow var(--transition-medium), transform var(--transition-medium), border-color var(--transition-fast);
            display: flex;
            flex-direction: column;
        }

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

        .tool-card-img {
            width: 100%;
            height: 160px;
            object-fit: cover;
            border-radius: 0;
        }

        .tool-card-body {
            padding: 18px 20px 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .tool-card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            margin-bottom: 10px;
        }

        .tool-tag {
            display: inline-block;
            font-size: 11px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 999px;
            letter-spacing: 0.02em;
            background: var(--primary-light);
            color: var(--primary);
        }

        .tool-tag.alt-tag {
            background: #FEF3E2;
            color: var(--accent-deep);
        }

        .tool-card-title {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 8px;
            line-height: 1.35;
        }

        .tool-card-desc {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.6;
            margin-bottom: 14px;
            flex: 1;
        }

        .tool-card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 12px;
            color: var(--text-muted);
            padding-top: 12px;
            border-top: 1px solid var(--border-light);
        }

        .tool-card-meta span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        /* Featured Tool */
        .featured-tool {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 0;
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: box-shadow var(--transition-medium), transform var(--transition-medium);
        }

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

        .featured-tool-img-wrap {
            position: relative;
            min-height: 280px;
            overflow: hidden;
        }

        .featured-tool-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
        }

        .featured-tool-badge {
            position: absolute;
            top: 16px;
            left: 16px;
            background: var(--accent);
            color: #fff;
            font-size: 12px;
            font-weight: 700;
            padding: 5px 14px;
            border-radius: 999px;
            letter-spacing: 0.03em;
        }

        .featured-tool-content {
            padding: 28px 32px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .featured-tool-content h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 10px;
            line-height: 1.3;
        }

        .featured-tool-content p {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 16px;
        }

        .featured-stats-row {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
        }

        .featured-stat-item {
            display: flex;
            flex-direction: column;
        }

        .featured-stat-item .stat-num {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
        }

        .featured-stat-item .stat-label {
            font-size: 12px;
            color: var(--text-muted);
        }

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

        .metric-card {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: 14px;
            padding: 18px 20px;
            text-align: center;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        }

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

        .metric-name {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 4px;
        }

        .metric-desc {
            font-size: 12px;
            color: var(--text-muted);
            line-height: 1.5;
        }

        .metric-value {
            font-size: 18px;
            font-weight: 700;
            color: var(--accent-deep);
            margin-top: 6px;
            display: block;
        }

        /* Tool info section */
        .tool-info-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .tool-info-card {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 22px 24px;
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition-medium), border-color var(--transition-fast);
        }

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

        .tool-info-icon {
            width: 42px;
            height: 42px;
            background: var(--primary-light);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 12px;
        }

        .tool-info-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 8px;
        }

        .tool-info-card p {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.6;
        }

        /* Button Styles */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 11px 22px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 14px;
            transition: all var(--transition-fast);
            text-decoration: none;
            letter-spacing: 0.01em;
            outline: none;
        }

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

        .btn-primary:hover {
            background: var(--primary-hover);
            color: #fff;
            text-decoration: none;
            transform: translateY(-1px);
        }

        .btn-primary:active {
            transform: scale(0.98);
        }

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

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

        .btn-outline:hover {
            background: var(--primary-light);
            color: var(--primary-hover);
            text-decoration: none;
        }

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

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

        /* FAQ Section */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: 12px;
            overflow: hidden;
            transition: box-shadow var(--transition-fast), border-color var(--transition-fast);
        }

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

        .faq-item.active {
            border-color: var(--primary-border);
            box-shadow: var(--shadow-card);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 16px 20px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-dark);
            text-align: left;
            transition: background var(--transition-fast);
        }

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

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

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-medium), padding var(--transition-medium);
            padding: 0 20px;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 20px 18px;
        }

        .faq-answer p {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
        }

        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, #1e7ee8 100%);
            border-radius: 24px;
            padding: 48px 40px;
            text-align: center;
            color: #fff;
            margin: 0 24px;
        }

        .cta-section h2 {
            font-size: 26px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }

        .cta-section p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 560px;
            margin: 0 auto 24px;
            line-height: 1.6;
        }

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

        .cta-section .btn:hover {
            background: var(--primary-light);
            color: var(--primary-hover);
        }

        .cta-form {
            display: flex;
            gap: 10px;
            max-width: 480px;
            margin: 0 auto;
        }

        .cta-form input {
            flex: 1;
            padding: 12px 18px;
            border: 2px solid rgba(255, 255, 255, 0.3);
            border-radius: var(--radius-input);
            font-size: 14px;
            background: rgba(255, 255, 255, 0.15);
            color: #fff;
            outline: none;
            transition: border-color var(--transition-fast), background var(--transition-fast);
        }

        .cta-form input::placeholder {
            color: rgba(255, 255, 255, 0.7);
        }

        .cta-form input:focus {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.25);
        }

        /* Footer */
        .site-footer {
            background: #0F1B2D;
            color: #A8B6C8;
            padding: 48px 24px 24px;
            margin-top: 0;
        }

        .site-footer .container {
            max-width: var(--max-width);
            margin: 0 auto;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 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: 13px;
            color: #8FA0B5;
            line-height: 1.6;
            max-width: 280px;
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }

        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-col ul li a {
            color: #A8B6C8;
            font-size: 13px;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 12px;
            color: #8FA0B5;
        }

        .footer-bottom a {
            color: #A8B6C8;
            text-decoration: none;
        }

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

        /* Responsive */
        @media (max-width: 1024px) {
            .section {
                padding: 56px 20px;
            }

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

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

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

            .featured-tool {
                grid-template-columns: 1fr;
            }

            .featured-tool-img-wrap {
                min-height: 200px;
            }

            .nav-menu {
                gap: 2px;
            }

            .nav-link {
                padding: 8px 10px;
                font-size: 13px;
            }
        }

        @media (max-width: 768px) {
            .site-header {
                padding: 10px 12px;
            }

            .nav-wrap {
                padding: 8px 16px;
                flex-wrap: wrap;
            }

            .nav-toggle {
                display: flex;
            }

            .nav-menu {
                display: none;
                flex-direction: column;
                width: 100%;
                padding: 12px 0 4px;
                gap: 2px;
                align-items: stretch;
                overflow-x: visible;
            }

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

            .nav-link {
                padding: 10px 16px;
                border-radius: 10px;
                font-size: 14px;
                width: 100%;
                text-align: left;
            }

            .nav-cta {
                display: none;
            }

            .category-header {
                padding: 20px 0 24px;
            }

            .category-header h1 {
                font-size: 24px;
            }

            .stats-hero-panel {
                width: 100%;
                min-width: auto;
            }

            .filter-toolbar {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }

            .filter-sort {
                margin-left: 0;
                width: 100%;
            }

            .filter-sort select {
                flex: 1;
                width: 100%;
            }

            .section {
                padding: 48px 16px;
            }

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

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

            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 10px;
            }

            .tool-info-grid {
                grid-template-columns: 1fr;
            }

            .featured-tool-content {
                padding: 20px 22px;
            }

            .featured-tool-img-wrap {
                min-height: 180px;
            }

            .cta-section {
                padding: 36px 20px;
                margin: 0 16px;
            }

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

            .cta-form {
                flex-direction: column;
            }

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

            .footer-brand {
                grid-column: 1 / -1;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
        }

        @media (max-width: 520px) {
            .nav-wrap {
                padding: 6px 12px;
            }

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

            .logo-mark {
                width: 32px;
                height: 32px;
                font-size: 14px;
            }

            .category-header h1 {
                font-size: 22px;
            }

            .category-header .sub-desc {
                font-size: 13px;
            }

            .stats-hero-panel {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
                padding: 14px 16px;
            }

            .stats-hero-panel .panel-value {
                margin-left: 0;
            }

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

            .featured-tool-img-wrap {
                min-height: 150px;
            }

            .featured-tool-content {
                padding: 16px 18px;
            }

            .featured-tool-content h3 {
                font-size: 18px;
            }

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

            .faq-question {
                font-size: 14px;
                padding: 14px 16px;
            }

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

/* roulang page: category4 */
:root {
      --primary: #0B5BD3;
      --primary-hover: #0948a8;
      --primary-light: #EBF2FB;
      --primary-border: #b8cfe8;
      --accent: #F59E0B;
      --accent-deep: #E08A0B;
      --success: #16A34A;
      --danger: #DC2626;
      --text-dark: #0F172A;
      --text-body: #475569;
      --text-muted: #64748B;
      --bg-page: #F5F8FC;
      --bg-card: #FFFFFF;
      --border-light: #E4ECF5;
      --border-input: #DCE6F2;
      --shadow-card: 0 8px 24px rgba(15, 60, 120, 0.08);
      --shadow-hover: 0 14px 32px rgba(15, 60, 120, 0.14);
      --shadow-nav: 0 4px 20px rgba(15, 60, 120, 0.08);
      --radius-card: 16px;
      --radius-btn: 10px;
      --radius-nav: 18px;
      --radius-input: 10px;
      --font-stack: 'PingFang SC', 'HarmonyOS Sans SC', 'Microsoft YaHei', 'Noto Sans CJK SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
      --max-width: 1200px;
      --section-pad-desktop: 84px 24px;
      --section-pad-mobile: 52px 16px;
      --transition-fast: 0.18s ease;
      --transition-medium: 0.3s ease;
    }
    html {
      scroll-behavior: smooth;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
    }
    body {
      font-family: var(--font-stack);
      font-size: 15px;
      line-height: 1.7;
      color: var(--text-body);
      background: var(--bg-page);
      min-height: 100vh;
      margin: 0;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
      border-radius: 12px;
    }
    a {
      color: var(--primary);
      text-decoration: none;
      transition: color var(--transition-fast);
    }
    a:hover {
      color: var(--primary-hover);
      text-decoration: underline;
    }
    button,
    input,
    textarea,
    select {
      font-family: inherit;
      font-size: inherit;
      line-height: inherit;
    }
    button {
      cursor: pointer;
      border: none;
      background: none;
    }
    .container {
      max-width: var(--max-width);
      margin: 0 auto;
      padding: 0 24px;
    }
    /* Header / Navigation */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      padding: 14px 24px;
      pointer-events: none;
      transition: padding var(--transition-medium);
    }
    .site-header.scrolled {
      padding: 8px 24px;
    }
    .nav-wrap {
      pointer-events: auto;
      max-width: var(--max-width);
      margin: 0 auto;
      background: rgba(255, 255, 255, 0.96);
      backdrop-filter: blur(8px);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-nav);
      box-shadow: var(--shadow-nav);
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 10px 22px;
      position: relative;
      transition: box-shadow var(--transition-medium), padding var(--transition-medium);
    }
    .site-header.scrolled .nav-wrap {
      box-shadow: 0 8px 28px rgba(15, 60, 120, 0.16);
      padding: 6px 20px;
    }
    .logo-link {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      color: var(--text-dark);
      text-decoration: none;
      font-weight: 700;
      font-size: 20px;
      letter-spacing: 0.02em;
      white-space: nowrap;
    }
    .logo-link:hover {
      text-decoration: none;
      color: var(--text-dark);
    }
    .logo-mark {
      width: 38px;
      height: 38px;
      background: linear-gradient(135deg, var(--primary) 0%, #1e7ee8 100%);
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-weight: 800;
      font-size: 16px;
      letter-spacing: 1px;
      flex-shrink: 0;
    }
    .nav-menu {
      display: flex;
      align-items: center;
      gap: 6px;
      overflow-x: auto;
      scrollbar-width: none;
      -ms-overflow-style: none;
    }
    .nav-menu::-webkit-scrollbar {
      display: none;
    }
    .nav-link {
      display: inline-block;
      padding: 8px 14px;
      color: var(--text-body);
      text-decoration: none;
      font-size: 14px;
      font-weight: 500;
      border-radius: 8px;
      white-space: nowrap;
      transition: background var(--transition-fast), color var(--transition-fast);
    }
    .nav-link:hover {
      background: var(--primary-light);
      color: var(--primary);
      text-decoration: none;
    }
    .nav-link.active {
      background: var(--primary);
      color: #fff;
      font-weight: 600;
    }
    .nav-cta {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 8px 16px;
      background: var(--primary);
      color: #fff;
      border-radius: var(--radius-btn);
      font-weight: 600;
      font-size: 13px;
      text-decoration: none;
      white-space: nowrap;
      transition: background var(--transition-fast), transform var(--transition-fast);
      flex-shrink: 0;
    }
    .nav-cta:hover {
      background: var(--primary-hover);
      color: #fff;
      text-decoration: none;
      transform: translateY(-1px);
    }
    .nav-cta:active {
      transform: translateY(0);
      box-shadow: inset 0 2px 5px rgba(0,0,0,0.18);
    }
    .nav-toggle {
      display: none;
      width: 42px;
      height: 42px;
      border-radius: 10px;
      background: var(--primary-light);
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 5px;
      pointer-events: auto;
      transition: background var(--transition-fast);
    }
    .nav-toggle span {
      display: block;
      width: 18px;
      height: 2px;
      background: var(--primary);
      border-radius: 2px;
      transition: transform var(--transition-fast), opacity var(--transition-fast);
    }
    .nav-toggle:hover {
      background: var(--primary-border);
    }
    /* Section */
    .section {
      padding: var(--section-pad-desktop);
    }
    .section-head {
      margin-bottom: 28px;
    }
    .section-head h2 {
      margin: 0 0 10px;
      font-size: 28px;
      font-weight: 700;
      color: var(--text-dark);
      line-height: 1.3;
    }
    .section-head p {
      margin: 0;
      color: var(--text-muted);
      font-size: 16px;
    }
    .text-link {
      display: inline-flex;
      align-items: center;
      gap: 4px;
      color: var(--primary);
      font-weight: 600;
      font-size: 14px;
    }
    .text-link:hover {
      color: var(--primary-hover);
      text-decoration: underline;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 11px 22px;
      border-radius: var(--radius-btn);
      font-weight: 600;
      font-size: 14px;
      line-height: 1.2;
      text-decoration: none;
      transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
    }
    .btn-primary {
      background: var(--primary);
      color: #fff;
    }
    .btn-primary:hover {
      background: var(--primary-hover);
      color: #fff;
      transform: translateY(-1px);
      text-decoration: none;
      box-shadow: 0 10px 20px rgba(11, 91, 211, 0.18);
    }
    .btn-primary:active {
      transform: translateY(0);
      box-shadow: inset 0 2px 5px rgba(0,0,0,0.18);
    }
    .btn-secondary {
      background: transparent;
      color: var(--primary);
      border: 1px solid var(--primary-border);
    }
    .btn-secondary:hover {
      background: var(--primary-light);
      color: var(--primary-hover);
      text-decoration: none;
      transform: translateY(-1px);
    }
    .btn:focus-visible,
    .nav-link:focus-visible,
    .nav-cta:focus-visible,
    .filter-btn:focus-visible,
    .faq-question:focus-visible,
    input:focus-visible,
    select:focus-visible {
      outline: 2px solid var(--primary);
      outline-offset: 2px;
    }
    /* Breadcrumb & Page header */
    .page-header {
      padding-top: 28px;
      padding-bottom: 32px;
    }
    .breadcrumb {
      display: flex;
      align-items: center;
      gap: 8px;
      margin-bottom: 18px;
      font-size: 13px;
      color: var(--text-muted);
    }
    .breadcrumb a {
      color: var(--primary);
      font-weight: 500;
    }
    .breadcrumb .sep {
      color: var(--primary-border);
    }
    .page-header h1 {
      font-size: 38px;
      font-weight: 700;
      color: var(--text-dark);
      line-height: 1.2;
      margin: 0 0 14px;
    }
    .page-intro {
      max-width: 820px;
      font-size: 16px;
      color: var(--text-body);
      margin: 0;
    }
    /* Filter bar */
    .filter-section {
      padding: 0 24px 12px;
    }
    .filter-bar {
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-card);
      box-shadow: var(--shadow-card);
      padding: 14px 16px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 14px;
    }
    .filter-group {
      display: flex;
      align-items: center;
      gap: 8px;
      flex-wrap: wrap;
    }
    .filter-btn {
      padding: 7px 13px;
      border-radius: 8px;
      background: #fff;
      border: 1px solid var(--border-light);
      color: var(--text-body);
      font-size: 13px;
      font-weight: 500;
      transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
    }
    .filter-btn:hover {
      background: var(--primary-light);
      color: var(--primary);
      border-color: var(--primary-border);
    }
    .filter-btn.active {
      background: var(--primary);
      color: #fff;
      border-color: var(--primary);
      font-weight: 600;
    }
    .filter-sort {
      display: flex;
      align-items: center;
      gap: 8px;
      color: var(--text-muted);
      font-size: 13px;
    }
    .filter-sort select {
      border: 1px solid var(--border-input);
      border-radius: var(--radius-input);
      padding: 7px 10px;
      background: #fff;
      color: var(--text-body);
      font-size: 13px;
    }
    .filter-sort select:focus {
      outline: 2px solid var(--primary);
      outline-offset: 2px;
    }
    /* Guide list */
    .guide-list-section {
      padding-top: 42px;
    }
    .guide-list {
      display: flex;
      flex-direction: column;
      gap: 18px;
    }
    .guide-item {
      display: grid;
      grid-template-columns: 280px 1fr;
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-card);
      box-shadow: var(--shadow-card);
      overflow: hidden;
      transition: box-shadow var(--transition-medium), transform var(--transition-medium), border-color var(--transition-medium);
    }
    .guide-item:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-2px);
      border-color: var(--primary-border);
    }
    .guide-img {
      width: 100%;
      height: 100%;
      min-height: 190px;
      object-fit: cover;
      border-radius: 0;
    }
    .guide-body {
      padding: 18px 20px;
      display: flex;
      flex-direction: column;
    }
    .badge-row {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
      margin-bottom: 10px;
    }
    .badge {
      display: inline-flex;
      align-items: center;
      padding: 3px 9px;
      border-radius: 999px;
      font-size: 12px;
      font-weight: 600;
      line-height: 1.4;
    }
    .badge-difficulty {
      background: #FEE2E2;
      color: #B91C1C;
    }
    .badge-version {
      background: #FEF3C7;
      color: #B45309;
    }
    .badge-scene {
      background: #DBEAFE;
      color: #1D4ED8;
    }
    .guide-body h3 {
      margin: 0 0 8px;
      font-size: 19px;
      font-weight: 700;
      color: var(--text-dark);
      line-height: 1.35;
    }
    .guide-body p {
      margin: 0 0 14px;
      color: var(--text-body);
      font-size: 15px;
      line-height: 1.75;
    }
    .card-foot {
      margin-top: auto;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      flex-wrap: wrap;
    }
    .meta {
      color: var(--text-muted);
      font-size: 13px;
    }
    /* Highlight guide */
    .highlight-guide {
      background: #fff;
    }
    .highlight-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 28px;
      align-items: center;
      background: linear-gradient(135deg, var(--primary-light) 0%, #F6FAFF 100%);
      border: 1px solid var(--primary-border);
      border-radius: 20px;
      padding: 30px;
      box-shadow: var(--shadow-card);
    }
    .eyebrow {
      display: inline-block;
      padding: 4px 10px;
      background: #fff;
      border: 1px solid var(--primary-border);
      color: var(--primary);
      border-radius: 999px;
      font-size: 12px;
      font-weight: 600;
      margin-bottom: 14px;
    }
    .highlight-content h2 {
      font-size: 28px;
      font-weight: 700;
      color: var(--text-dark);
      line-height: 1.3;
      margin: 0 0 12px;
    }
    .highlight-content p {
      color: var(--text-body);
      margin: 0 0 20px;
      font-size: 15px;
    }
    .highlight-media img {
      width: 100%;
      aspect-ratio: 4/3;
      object-fit: cover;
      border-radius: 14px;
      box-shadow: var(--shadow-card);
    }
    /* Advanced guides */
    .advanced-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 18px;
    }
    .advanced-card {
      background: #fff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-card);
      padding: 18px;
      box-shadow: var(--shadow-card);
      transition: box-shadow var(--transition-medium), transform var(--transition-medium);
    }
    .advanced-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-2px);
    }
    .advanced-card .num {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 34px;
      height: 34px;
      background: var(--primary);
      color: #fff;
      border-radius: 10px;
      font-weight: 700;
      margin-bottom: 12px;
    }
    .advanced-card h3 {
      font-size: 18px;
      font-weight: 700;
      color: var(--text-dark);
      margin: 0 0 8px;
    }
    .advanced-card p {
      color: var(--text-body);
      margin: 0 0 14px;
      font-size: 14px;
    }
    .advanced-card .badge {
      margin-bottom: 8px;
    }
    /* Beginner steps */
    .beginner-guides {
      background: #fff;
    }
    .beginner-steps {
      list-style: none;
      margin: 0;
      padding: 0;
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 14px;
    }
    .beginner-steps li {
      background: var(--primary-light);
      border: 1px solid var(--primary-border);
      border-radius: 14px;
      padding: 16px 18px;
      color: var(--text-body);
      font-size: 15px;
      display: flex;
      gap: 10px;
      align-items: flex-start;
    }
    .step-num {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 26px;
      height: 26px;
      background: #fff;
      color: var(--primary);
      border-radius: 8px;
      font-weight: 700;
      font-size: 13px;
      flex-shrink: 0;
    }
    /* Stats strip */
    .stats-strip {
      background: var(--primary);
    }
    .stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 18px;
    }
    .stat-item {
      background: rgba(255,255,255,0.08);
      border: 1px solid rgba(255,255,255,0.16);
      border-radius: 14px;
      padding: 20px;
      color: #fff;
    }
    .stat-value {
      font-size: 28px;
      font-weight: 700;
      line-height: 1.2;
      margin-bottom: 6px;
    }
    .stat-label {
      font-size: 13px;
      color: rgba(255,255,255,0.78);
    }
    /* FAQ */
    .faq-section {
      background: #fff;
    }
    .faq-list {
      max-width: 820px;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .faq-item {
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: 12px;
      overflow: hidden;
      transition: box-shadow var(--transition-medium);
    }
    .faq-item.open {
      box-shadow: var(--shadow-card);
    }
    .faq-question {
      width: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      padding: 16px 18px;
      text-align: left;
      background: #fff;
      color: var(--text-dark);
      font-size: 15px;
      font-weight: 600;
      transition: background var(--transition-fast);
    }
    .faq-question:hover {
      background: var(--primary-light);
    }
    .faq-icon {
      width: 22px;
      height: 22px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      transition: transform var(--transition-fast);
      flex-shrink: 0;
    }
    .faq-item.open .faq-icon {
      transform: rotate(45deg);
      background: var(--primary);
      color: #fff;
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height var(--transition-medium);
    }
    .faq-answer-inner {
      padding: 0 18px 18px;
      color: var(--text-body);
      font-size: 14px;
    }
    /* CTA / Subscribe */
    .cta-section {
      padding-top: 22px;
    }
    .cta-card {
      background: linear-gradient(135deg, var(--primary-light) 0%, #F6FAFF 100%);
      border: 1px solid var(--primary-border);
      border-radius: 20px;
      box-shadow: var(--shadow-card);
      padding: 30px;
      display: flex;
      flex-direction: column;
      gap: 18px;
      align-items: flex-start;
    }
    .cta-card h2 {
      margin: 0;
      font-size: 26px;
      font-weight: 700;
      color: var(--text-dark);
      line-height: 1.3;
    }
    .cta-card p {
      margin: 0;
      color: var(--text-body);
      font-size: 15px;
      max-width: 620px;
    }
    .subscribe-form {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      width: 100%;
      max-width: 520px;
    }
    .subscribe-form input {
      flex: 1;
      min-width: 220px;
      padding: 11px 14px;
      border: 1px solid var(--border-input);
      border-radius: var(--radius-input);
      background: #fff;
      color: var(--text-dark);
    }
    .subscribe-form input:focus {
      outline: 2px solid var(--primary);
      outline-offset: 2px;
    }
    .form-msg {
      font-size: 13px;
      color: var(--success);
      min-height: 20px;
    }
    /* Footer */
    .site-footer {
      background: #0F172A;
      color: #CBD5E1;
      padding: 48px 24px 24px;
      margin-top: 40px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 30px;
      max-width: var(--max-width);
      margin: 0 auto 30px;
    }
    .footer-brand h3 {
      color: #fff;
      font-size: 20px;
      margin: 0 0 10px;
    }
    .footer-brand p {
      color: #94A3B8;
      font-size: 14px;
      margin: 0;
      max-width: 280px;
    }
    .footer-col h4 {
      color: #fff;
      font-size: 14px;
      font-weight: 600;
      margin: 0 0 12px;
    }
    .footer-col ul {
      list-style: none;
      margin: 0;
      padding: 0;
    }
    .footer-col li {
      margin-bottom: 8px;
    }
    .footer-col a {
      color: #CBD5E1;
      text-decoration: none;
      font-size: 13px;
      transition: color var(--transition-fast);
    }
    .footer-col a:hover {
      color: #fff;
      text-decoration: underline;
    }
    .footer-bottom {
      max-width: var(--max-width);
      margin: 0 auto;
      padding-top: 18px;
      border-top: 1px solid rgba(255,255,255,0.1);
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      flex-wrap: wrap;
      font-size: 12px;
      color: #94A3B8;
    }
    .footer-bottom a {
      color: #CBD5E1;
    }
    .footer-bottom a:hover {
      color: #fff;
    }
    /* Responsive */
    @media (max-width: 1024px) {
      .section {
        padding: 70px 20px;
      }
      .advanced-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .stats-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }
    @media (max-width: 767px) {
      .site-header {
        padding: 8px 12px;
      }
      .nav-wrap {
        padding: 8px 12px;
      }
      .logo-link {
        font-size: 17px;
      }
      .logo-mark {
        width: 34px;
        height: 34px;
        font-size: 14px;
      }
      .nav-cta {
        display: none;
      }
      .nav-toggle {
        display: flex;
      }
      .nav-menu {
        display: none;
        position: absolute;
        top: calc(100% + 10px);
        left: 0;
        right: 0;
        background: #fff;
        border-radius: 14px;
        box-shadow: 0 16px 32px rgba(15, 60, 120, 0.14);
        padding: 10px;
        flex-direction: column;
        align-items: stretch;
        border: 1px solid var(--border-light);
      }
      .site-header.nav-open .nav-menu {
        display: flex;
      }
      .nav-link {
        width: 100%;
        text-align: left;
        padding: 10px 14px;
      }
      .section {
        padding: var(--section-pad-mobile);
      }
      .page-header {
        padding-top: 18px;
      }
      .page-header h1 {
        font-size: 30px;
      }
      .guide-item {
        grid-template-columns: 1fr;
      }
      .guide-img {
        height: 180px;
        min-height: auto;
      }
      .highlight-grid {
        grid-template-columns: 1fr;
        padding: 20px;
      }
      .highlight-content h2 {
        font-size: 24px;
      }
      .advanced-grid {
        grid-template-columns: 1fr;
      }
      .beginner-steps {
        grid-template-columns: 1fr;
      }
      .stats-grid {
        grid-template-columns: 1fr;
      }
      .filter-bar {
        flex-direction: column;
        align-items: stretch;
      }
      .filter-sort {
        justify-content: space-between;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 24px;
      }
      .footer-brand {
        grid-column: 1 / -1;
      }
      .footer-bottom {
        flex-direction: column;
        text-align: center;
      }
    }
    @media (max-width: 480px) {
      .page-header h1 {
        font-size: 26px;
      }
      .section-head h2 {
        font-size: 23px;
      }
      .guide-body h3 {
        font-size: 17px;
      }
      .guide-body p {
        font-size: 14px;
      }
      .cta-card {
        padding: 22px;
      }
      .cta-card h2 {
        font-size: 22px;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
    }