/* roulang page: index */
:root {
            --primary: #2F6BB0;
            --primary-dark: #1D4E89;
            --primary-light: #6BA3D6;
            --accent: #FF6B35;
            --accent-cyan: #00C2C7;
            --bg: #F5F8FC;
            --surface: #FFFFFF;
            --surface-alt: #EFF4FA;
            --text: #1A2B3C;
            --text-secondary: #4A5F73;
            --text-muted: #7A8DA3;
            --border: #E8EDF3;
            --border-strong: #D0D7E2;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-pill: 999px;
            --shadow-sm: 0 2px 6px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.05);
            --shadow-lg: 0 8px 20px rgba(0, 0, 0, 0.08);
            --shadow-xl: 0 16px 40px rgba(0, 0, 0, 0.1);
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 64px;
            --spacing-xxl: 96px;
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
            --font-mono: "SF Mono", "Consolas", "Menlo", monospace;
            --transition: 0.2s ease;
            --header-height: 64px;
            --nav-height: 48px;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            -webkit-text-size-adjust: 100%;
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background-color: var(--bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        img,
        picture,
        svg {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4 {
            font-weight: 700;
            line-height: 1.35;
            color: var(--text);
        }
        h1 {
            font-size: clamp(28px, 4vw, 40px);
            letter-spacing: -0.02em;
        }
        h2 {
            font-size: clamp(22px, 3vw, 28px);
            letter-spacing: -0.01em;
        }
        h3 {
            font-size: clamp(18px, 2.2vw, 22px);
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--spacing-md);
        }
        .container-wide {
            max-width: 1360px;
        }
        .container-narrow {
            max-width: 860px;
        }
        .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;
        }
        .skip-link {
            position: absolute;
            top: -40px;
            left: 16px;
            padding: 8px 16px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-sm);
            z-index: 9999;
            transition: top var(--transition);
        }
        .skip-link:focus {
            top: 8px;
            color: #fff;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            line-height: 1.4;
            transition: all var(--transition);
            white-space: nowrap;
            min-height: 44px;
            text-align: center;
        }
        .btn-primary {
            background-color: var(--primary);
            color: #fff;
            box-shadow: 0 2px 8px rgba(47, 107, 176, 0.25);
        }
        .btn-primary:hover {
            background-color: var(--primary-dark);
            color: #fff;
            box-shadow: 0 4px 16px rgba(47, 107, 176, 0.35);
            transform: translateY(-1px);
        }
        .btn-primary:focus-visible {
            outline: 3px solid rgba(47, 107, 176, 0.5);
            outline-offset: 2px;
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(47, 107, 176, 0.25);
        }
        .btn-outline {
            background-color: transparent;
            color: var(--primary);
            border: 1.5px solid var(--primary);
        }
        .btn-outline:hover {
            background-color: rgba(47, 107, 176, 0.06);
            color: var(--primary-dark);
            border-color: var(--primary-dark);
            transform: translateY(-1px);
        }
        .btn-outline:focus-visible {
            outline: 3px solid rgba(47, 107, 176, 0.4);
            outline-offset: 2px;
        }
        .btn-accent {
            background-color: var(--accent);
            color: #fff;
            box-shadow: 0 2px 8px rgba(255, 107, 53, 0.3);
        }
        .btn-accent:hover {
            background-color: #e55a2b;
            color: #fff;
            box-shadow: 0 4px 16px rgba(255, 107, 53, 0.4);
            transform: translateY(-1px);
        }
        .btn-accent:focus-visible {
            outline: 3px solid rgba(255, 107, 53, 0.5);
            outline-offset: 2px;
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
            min-height: 36px;
            border-radius: 7px;
        }
        .btn-lg {
            padding: 16px 32px;
            font-size: 16px;
            min-height: 52px;
            border-radius: 10px;
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            font-size: 12px;
            font-weight: 500;
            line-height: 1.5;
            background-color: var(--surface-alt);
            color: var(--text-secondary);
            white-space: nowrap;
        }
        .badge-primary {
            background-color: var(--primary);
            color: #fff;
        }
        .badge-accent {
            background-color: #FFF0E8;
            color: var(--accent);
        }
        .badge-cyan {
            background-color: #E8FBFB;
            color: #009A9F;
        }
        .chip {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: var(--radius-pill);
            font-size: 14px;
            font-weight: 500;
            background-color: #EEF2F7;
            color: var(--text-secondary);
            transition: all var(--transition);
            white-space: nowrap;
            cursor: pointer;
            text-decoration: none;
            border: 1px solid transparent;
            min-width: 80px;
            justify-content: center;
        }
        .chip:hover {
            background-color: #DDE7F2;
            color: var(--primary-dark);
        }
        .chip.active {
            background-color: var(--primary);
            color: #fff;
            box-shadow: 0 2px 8px rgba(47, 107, 176, 0.25);
        }
        .chip:focus-visible {
            outline: 3px solid rgba(47, 107, 176, 0.4);
            outline-offset: 2px;
        }
        .card {
            background-color: var(--surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-md);
            overflow: hidden;
            transition: all var(--transition);
        }
        .card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }
        .card-body {
            padding: var(--spacing-md);
        }
        .card-title {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text);
        }
        .card-text {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.65;
        }
        .section {
            padding: var(--spacing-xl) 0;
        }
        .section-alt {
            background-color: var(--surface-alt);
        }
        .section-surface {
            background-color: var(--surface);
        }
        .section-header {
            margin-bottom: var(--spacing-lg);
        }
        .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            letter-spacing: 0.04em;
            margin-bottom: 8px;
        }
        .section-title {
            font-size: clamp(22px, 3vw, 28px);
            margin-bottom: 12px;
        }
        .section-desc {
            font-size: 15px;
            color: var(--text-secondary);
            max-width: 720px;
            line-height: 1.75;
        }
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--spacing-md);
        }
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-md);
        }
        .grid-5 {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: var(--spacing-md);
        }
        .img-cover {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .img-wrap {
            position: relative;
            overflow: hidden;
        }
        .img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s ease;
        }
        .img-wrap:hover img {
            transform: scale(1.03);
        }
        .text-muted {
            color: var(--text-muted);
        }
        .text-secondary {
            color: var(--text-secondary);
        }
        .mt-sm {
            margin-top: var(--spacing-sm);
        }
        .mt-md {
            margin-top: var(--spacing-md);
        }
        .mt-lg {
            margin-top: var(--spacing-lg);
        }
        .mb-sm {
            margin-bottom: var(--spacing-sm);
        }
        .mb-md {
            margin-bottom: var(--spacing-md);
        }
        .mb-lg {
            margin-bottom: var(--spacing-lg);
        }
        .divider {
            height: 1px;
            background: var(--border);
            margin: 0;
            border: none;
        }
        .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .tag-chip {
            display: inline-block;
            padding: 6px 14px;
            border-radius: var(--radius-pill);
            font-size: 13px;
            background-color: #F0F4F9;
            color: var(--text-secondary);
            text-decoration: none;
            transition: all var(--transition);
            border: 1px solid var(--border);
            white-space: nowrap;
        }
        .tag-chip:hover {
            background-color: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .stat-number {
            font-size: clamp(32px, 4vw, 48px);
            font-weight: 800;
            color: var(--primary);
            line-height: 1.1;
            font-variant-numeric: tabular-nums;
        }
        .stat-accent {
            color: var(--accent);
        }
        .trend-up {
            color: #22A06B;
            font-weight: 600;
        }
        .trend-down {
            color: #E5484D;
            font-weight: 600;
        }

        /* Header & Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background-color: var(--surface);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 1px 6px rgba(0, 0, 0, 0.04);
        }
        .brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-height);
            gap: var(--spacing-md);
        }
        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            text-decoration: none;
            white-space: nowrap;
        }
        .brand:hover {
            color: var(--primary);
        }
        .brand-logo-icon {
            width: 36px;
            height: 36px;
            border-radius: var(--radius-sm);
            background-color: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 800;
            flex-shrink: 0;
        }
        .brand-sub {
            font-size: 12px;
            font-weight: 400;
            color: var(--text-muted);
            margin-left: 4px;
            white-space: nowrap;
        }
        .brand-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .search-form {
            display: flex;
            align-items: center;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 6px 10px;
            gap: 6px;
            min-width: 180px;
        }
        .search-form input {
            border: none;
            background: transparent;
            outline: none;
            font-size: 14px;
            color: var(--text);
            width: 100%;
            min-width: 0;
        }
        .search-form input::placeholder {
            color: var(--text-muted);
        }
        .search-form:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(47, 107, 176, 0.15);
        }
        .search-form button {
            color: var(--text-muted);
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 4px;
            border-radius: 4px;
        }
        .search-form button:hover {
            color: var(--primary);
        }
        .nav-row {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 6px 0;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: thin;
            scrollbar-color: var(--border-strong) transparent;
            height: var(--nav-height);
        }
        .nav-row::-webkit-scrollbar {
            height: 4px;
        }
        .nav-row::-webkit-scrollbar-track {
            background: transparent;
        }
        .nav-row::-webkit-scrollbar-thumb {
            background: var(--border-strong);
            border-radius: 4px;
        }
        .nav-row .chip {
            flex-shrink: 0;
        }

        /* Hero */
        .hero {
            position: relative;
            min-height: 70vh;
            display: flex;
            align-items: center;
            padding: var(--spacing-xxl) 0;
            background-image: url('/assets/images/fc37ab1c077e85f9.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(29, 78, 137, 0.88) 0%, rgba(47, 107, 176, 0.75) 50%, rgba(107, 163, 214, 0.55) 100%);
            z-index: 1;
        }
        .hero .container {
            position: relative;
            z-index: 2;
        }
        .hero-content {
            display: grid;
            grid-template-columns: 1fr 280px;
            gap: var(--spacing-xl);
            align-items: center;
        }
        .hero-main {
            color: #fff;
        }
        .hero-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.06em;
            background: rgba(255, 255, 255, 0.18);
            padding: 6px 16px;
            border-radius: var(--radius-pill);
            color: #fff;
            margin-bottom: var(--spacing-md);
            border: 1px solid rgba(255, 255, 255, 0.25);
        }
        .hero h1 {
            color: #fff;
            font-size: clamp(30px, 4.5vw, 44px);
            margin-bottom: var(--spacing-sm);
            max-width: 640px;
        }
        .hero-sub {
            font-size: 17px;
            line-height: 1.75;
            color: rgba(255, 255, 255, 0.92);
            max-width: 620px;
            margin-bottom: var(--spacing-lg);
        }
        .hero-cta-group {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: var(--spacing-lg);
        }
        .hero-data-row {
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
        }
        .hero-data-item .data-num {
            font-size: 28px;
            font-weight: 800;
            color: #fff;
            font-variant-numeric: tabular-nums;
        }
        .hero-data-item .data-label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.8);
        }
        .hero-whitepaper {
            background: rgba(255, 255, 255, 0.96);
            border-radius: var(--radius-lg);
            padding: var(--spacing-md);
            box-shadow: var(--shadow-xl);
            border: 1px solid rgba(255, 255, 255, 0.6);
            color: var(--text);
        }
        .hero-whitepaper .wp-cover {
            border-radius: var(--radius-sm);
            overflow: hidden;
            aspect-ratio: 3 / 4;
            margin-bottom: var(--spacing-sm);
            background: var(--surface-alt);
        }
        .hero-whitepaper .wp-title {
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--text);
        }
        .hero-whitepaper .wp-desc {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 12px;
        }
        .hero-whitepaper .wp-toc {
            font-size: 12px;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 16px;
            list-style: none;
            padding: 0;
        }
        .hero-whitepaper .wp-toc li::before {
            content: '·';
            margin-right: 6px;
            color: var(--primary);
        }
        .form-input {
            width: 100%;
            padding: 12px 14px;
            border: 1.5px solid var(--border-strong);
            border-radius: var(--radius-sm);
            font-size: 14px;
            background: var(--surface);
            color: var(--text);
            transition: border-color var(--transition), box-shadow var(--transition);
            outline: none;
        }
        .form-input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(47, 107, 176, 0.15);
        }
        .form-input::placeholder {
            color: var(--text-muted);
        }
        .form-group {
            margin-bottom: 12px;
        }

        /* Pain points */
        .pain-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-md);
        }
        .pain-card {
            background: var(--surface);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .pain-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: #D5E3F0;
        }
        .pain-card .pain-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: #EEF2F7;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            margin-bottom: 12px;
            color: var(--primary);
        }
        .pain-card h3 {
            font-size: 16px;
            margin-bottom: 6px;
        }
        .pain-card p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.65;
        }

        /* Solution */
        .solution-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-xl);
            align-items: center;
        }
        .solution-text h3 {
            margin-bottom: 12px;
        }
        .solution-text p {
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 12px;
        }
        .solution-img {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            aspect-ratio: 16 / 10;
        }
        .solution-list {
            margin-top: var(--spacing-md);
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .solution-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: var(--text-secondary);
        }
        .solution-list li::before {
            content: '✓';
            color: #22A06B;
            font-weight: 700;
            flex-shrink: 0;
        }

        /* Steps */
        .steps-wrap {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-md);
            position: relative;
        }
        .step-item {
            background: var(--surface);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            position: relative;
            transition: all var(--transition);
        }
        .step-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: 16px;
            margin-bottom: 12px;
        }
        .step-item h3 {
            font-size: 15px;
            margin-bottom: 6px;
        }
        .step-item p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.65;
        }

        /* Features */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-lg);
            grid-auto-rows: auto;
        }
        .feature-card {
            background: var(--surface);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .feature-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }
        .feature-card .feature-img {
            height: 160px;
            overflow: hidden;
            position: relative;
        }
        .feature-card .feature-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s ease;
        }
        .feature-card:hover .feature-img img {
            transform: scale(1.04);
        }
        .feature-card .feature-body {
            padding: var(--spacing-md);
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .feature-card .feature-body h3 {
            font-size: 17px;
            margin-bottom: 8px;
        }
        .feature-card .feature-body p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.65;
            flex: 1;
        }
        .feature-card.feature-tall {
            grid-row: span 2;
        }
        .feature-card.feature-tall .feature-img {
            height: 260px;
        }
        .feature-card.feature-wide {
            grid-column: span 2;
        }

        /* Stats */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-md);
        }
        .stat-card {
            background: var(--surface);
            border-radius: var(--radius-md);
            padding: var(--spacing-lg);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            text-align: center;
            transition: all var(--transition);
        }
        .stat-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .stat-card .stat-number {
            font-size: 36px;
            margin-bottom: 6px;
        }
        .stat-card .stat-label {
            font-size: 13px;
            font-weight: 600;
            color: var(--text-secondary);
            margin-bottom: 8px;
        }
        .stat-card .stat-desc {
            font-size: 12px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* Testimonials */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }
        .testimonial-card {
            background: var(--surface);
            border-radius: var(--radius-md);
            padding: var(--spacing-lg);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .testimonial-card:hover {
            box-shadow: var(--shadow-md);
        }
        .testimonial-quote {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: var(--spacing-md);
            position: relative;
            padding-left: 16px;
            border-left: 3px solid var(--primary-light);
        }
        .testimonial-user {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .testimonial-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--primary-light);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 15px;
            flex-shrink: 0;
        }
        .testimonial-name {
            font-size: 14px;
            font-weight: 600;
            color: var(--text);
        }
        .testimonial-role {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* Audience */
        .audience-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-md);
        }
        .audience-card {
            background: var(--surface);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            text-align: center;
        }
        .audience-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .audience-icon {
            font-size: 32px;
            margin-bottom: 12px;
            display: block;
        }
        .audience-card h3 {
            font-size: 15px;
            margin-bottom: 6px;
        }
        .audience-card p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* News */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .news-item {
            display: grid;
            grid-template-columns: 120px 1fr auto;
            gap: var(--spacing-md);
            align-items: center;
            padding: var(--spacing-sm) var(--spacing-md);
            background: var(--surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .news-item:hover {
            box-shadow: var(--shadow-md);
            border-color: #D5E3F0;
        }
        .news-date {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            font-variant-numeric: tabular-nums;
            white-space: nowrap;
        }
        .news-content {
            min-width: 0;
        }
        .news-content h3 {
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 4px;
        }
        .news-content h3 a {
            color: var(--text);
            text-decoration: none;
        }
        .news-content h3 a:hover {
            color: var(--primary);
        }
        .news-content p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            text-decoration: none;
            white-space: nowrap;
        }
        .news-link:hover {
            color: var(--primary-dark);
            text-decoration: underline;
        }

        /* Brand story */
        .brand-story {
            background: var(--surface-alt);
            border-radius: var(--radius-lg);
            padding: var(--spacing-xl);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
        }
        .brand-story h2 {
            margin-bottom: var(--spacing-md);
            color: var(--primary-dark);
        }
        .brand-story p {
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 12px;
            font-size: 15px;
        }

        /* Rankings */
        .ranking-scroll {
            display: flex;
            gap: var(--spacing-md);
            overflow-x: auto;
            padding-bottom: 12px;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: thin;
            scrollbar-color: var(--border-strong) transparent;
        }
        .ranking-scroll::-webkit-scrollbar {
            height: 4px;
        }
        .ranking-scroll::-webkit-scrollbar-thumb {
            background: var(--border-strong);
            border-radius: 4px;
        }
        .ranking-card {
            min-width: 260px;
            background: var(--surface);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            flex-shrink: 0;
            transition: all var(--transition);
        }
        .ranking-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .ranking-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 12px;
        }
        .ranking-header .rank {
            font-size: 14px;
            font-weight: 700;
            color: var(--primary);
        }
        .ranking-header .heat {
            font-size: 12px;
            color: var(--accent);
            font-weight: 600;
        }
        .ranking-name {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 4px;
        }
        .ranking-tag {
            font-size: 12px;
            color: var(--text-muted);
            margin-bottom: 12px;
        }
        .ranking-bar {
            height: 6px;
            background: #EEF2F7;
            border-radius: 3px;
            overflow: hidden;
        }
        .ranking-bar-fill {
            height: 100%;
            background: linear-gradient(90deg, var(--primary-light), var(--primary));
            border-radius: 3px;
            transition: width 0.6s ease;
        }

        /* Topics */
        .topic-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--spacing-md);
        }
        .topic-card {
            position: relative;
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: all var(--transition);
            aspect-ratio: 16 / 8;
            display: flex;
            align-items: flex-end;
        }
        .topic-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }
        .topic-card img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .topic-overlay {
            position: relative;
            z-index: 1;
            padding: var(--spacing-lg);
            background: linear-gradient(transparent, rgba(0, 0, 0, 0.75));
            width: 100%;
            color: #fff;
        }
        .topic-overlay h3 {
            color: #fff;
            font-size: 18px;
            margin-bottom: 4px;
        }
        .topic-overlay p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.85);
        }
        .topic-overlay .topic-link {
            display: inline-block;
            margin-top: 8px;
            font-size: 13px;
            font-weight: 600;
            color: #fff;
            text-decoration: underline;
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 820px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: #D5E3F0;
        }
        .faq-question {
            padding: var(--spacing-md);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-weight: 600;
            font-size: 15px;
            color: var(--text);
            user-select: none;
            transition: color var(--transition);
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question .faq-icon {
            font-size: 18px;
            transition: transform var(--transition);
            flex-shrink: 0;
            color: var(--text-muted);
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
            padding: 0 var(--spacing-md);
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 200px;
            padding-bottom: var(--spacing-md);
        }

        /* CTA */
        .cta-banner {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
            border-radius: var(--radius-lg);
            padding: var(--spacing-xl);
            color: #fff;
            box-shadow: var(--shadow-xl);
        }
        .cta-banner h2 {
            color: #fff;
            font-size: clamp(22px, 3vw, 28px);
            margin-bottom: 8px;
        }
        .cta-banner p {
            color: rgba(255, 255, 255, 0.88);
            font-size: 15px;
            margin-bottom: var(--spacing-lg);
            max-width: 600px;
        }
        .cta-form {
            display: flex;
            gap: 12px;
            max-width: 480px;
            flex-wrap: wrap;
        }
        .cta-form .form-input {
            flex: 1;
            min-width: 240px;
            border-color: rgba(255, 255, 255, 0.3);
            background: rgba(255, 255, 255, 0.15);
            color: #fff;
            backdrop-filter: blur(8px);
        }
        .cta-form .form-input::placeholder {
            color: rgba(255, 255, 255, 0.7);
        }
        .cta-form .form-input:focus {
            border-color: #fff;
            box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.25);
        }
        .cta-form .btn-accent {
            background: var(--accent);
            color: #fff;
        }

        /* Tags cloud */
        .tags-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
        }

        /* Footer */
        .site-footer {
            background: #1A2B3C;
            color: #C5D2E0;
            padding: var(--spacing-xl) 0 var(--spacing-md);
            margin-top: auto;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--spacing-xl);
            margin-bottom: var(--spacing-lg);
        }
        .footer-brand .brand {
            color: #fff;
            margin-bottom: 12px;
            font-size: 20px;
        }
        .footer-brand .brand:hover {
            color: var(--primary-light);
        }
        .footer-brand p {
            font-size: 13px;
            color: #8FA4B8;
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 14px;
        }
        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col ul a {
            color: #C5D2E0;
            font-size: 13px;
            text-decoration: none;
            transition: color var(--transition);
        }
        .footer-col ul a:hover {
            color: #fff;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: var(--spacing-md);
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 12px;
            color: #8FA4B8;
        }
        .footer-bottom a {
            color: #C5D2E0;
            text-decoration: none;
        }
        .footer-bottom a:hover {
            color: #fff;
        }
        .footer-links-bottom {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* Floating CTA */
        .floating-cta {
            position: fixed;
            bottom: 24px;
            right: 24px;
            z-index: 90;
            display: none;
        }
        .floating-cta .btn {
            box-shadow: var(--shadow-xl);
            border-radius: var(--radius-pill);
        }

        /* Responsive */
        @media (max-width: 1199px) {
            .grid-4 {
                grid-template-columns: repeat(3, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .audience-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .pain-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-wrap {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 991px) {
            .grid-3,
            .grid-4,
            .grid-5 {
                grid-template-columns: repeat(2, 1fr);
            }
            .testimonial-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .feature-card.feature-tall {
                grid-row: auto;
            }
            .feature-card.feature-wide {
                grid-column: auto;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .solution-wrap {
                grid-template-columns: 1fr;
            }
            .hero-content {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
            }
            .hero-whitepaper {
                max-width: 320px;
            }
            .news-item {
                grid-template-columns: 90px 1fr;
                gap: 8px;
            }
            .news-link {
                grid-column: 1 / -1;
                justify-self: end;
            }
            .topic-grid {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 767px) {
            .section {
                padding: var(--spacing-lg) 0;
            }
            .grid-2,
            .grid-3,
            .grid-4,
            .grid-5,
            .testimonial-grid,
            .features-grid,
            .stats-grid,
            .audience-grid,
            .pain-grid,
            .steps-wrap {
                grid-template-columns: 1fr;
            }
            .hero {
                min-height: 60vh;
                padding: var(--spacing-xl) 0;
            }
            .hero h1 {
                font-size: 26px;
            }
            .hero-sub {
                font-size: 15px;
            }
            .hero-data-row {
                gap: 20px;
            }
            .hero-whitepaper {
                max-width: 100%;
            }
            .brand-row {
                height: auto;
                padding: 10px 0;
                flex-wrap: wrap;
            }
            .search-form {
                order: 3;
                width: 100%;
                min-width: 0;
                margin-bottom: 6px;
            }
            .nav-row {
                height: auto;
                padding: 4px 0 8px;
            }
            .news-item {
                grid-template-columns: 1fr;
                gap: 4px;
            }
            .news-date {
                font-size: 12px;
            }
            .news-link {
                grid-column: auto;
                justify-self: start;
            }
            .cta-form {
                flex-direction: column;
            }
            .cta-form .form-input {
                min-width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
            }
            .stat-card {
                padding: var(--spacing-md);
            }
            .brand-story {
                padding: var(--spacing-lg);
            }
            .solution-img {
                aspect-ratio: 16 / 9;
            }
            .topic-card {
                aspect-ratio: 16 / 9;
            }
            .ranking-card {
                min-width: 220px;
            }
            .floating-cta {
                bottom: 16px;
                right: 16px;
                display: block;
            }
        }
        @media (max-width: 480px) {
            .hero-data-row {
                flex-direction: column;
                gap: 8px;
            }
            .hero-cta-group {
                flex-direction: column;
                width: 100%;
            }
            .hero-cta-group .btn {
                width: 100%;
            }
            .brand-sub {
                display: none;
            }
            .topic-overlay {
                padding: var(--spacing-md);
            }
            .topic-overlay h3 {
                font-size: 16px;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #2F6BB0;
            --primary-dark: #1D4E89;
            --primary-light: #6BA3D6;
            --accent: #FF6B35;
            --accent-cyan: #00C2C7;
            --bg: #F5F8FC;
            --surface: #FFFFFF;
            --surface-alt: #EFF4FA;
            --text: #1A2B3C;
            --text-secondary: #4A5F73;
            --text-muted: #7A8DA3;
            --border: #E8EDF3;
            --border-strong: #D0D7E2;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-pill: 999px;
            --shadow-sm: 0 2px 6px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.05);
            --shadow-lg: 0 8px 20px rgba(0, 0, 0, 0.08);
            --shadow-xl: 0 16px 40px rgba(0, 0, 0, 0.1);
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 64px;
            --spacing-xxl: 96px;
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
            --font-mono: "SF Mono", "Consolas", "Menlo", monospace;
            --transition: 0.2s ease;
            --header-height: 64px;
            --nav-height: 48px;
        }

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

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

        body {
            margin: 0;
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background-color: var(--bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

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

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--spacing-md);
        }
        .container-wide {
            max-width: 1360px;
        }
        .container-narrow {
            max-width: 860px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            line-height: 1.4;
            transition: all var(--transition);
            white-space: nowrap;
            min-height: 44px;
            text-align: center;
        }
        .btn-primary {
            background-color: var(--primary);
            color: #fff;
            box-shadow: 0 2px 8px rgba(47, 107, 176, 0.25);
        }
        .btn-primary:hover {
            background-color: var(--primary-dark);
            color: #fff;
            box-shadow: 0 4px 16px rgba(47, 107, 176, 0.35);
            transform: translateY(-1px);
        }
        .btn-primary:focus-visible {
            outline: 3px solid rgba(47, 107, 176, 0.5);
            outline-offset: 2px;
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(47, 107, 176, 0.25);
        }
        .btn-outline {
            background-color: transparent;
            color: var(--primary);
            border: 1.5px solid var(--primary);
        }
        .btn-outline:hover {
            background-color: rgba(47, 107, 176, 0.06);
            color: var(--primary-dark);
            border-color: var(--primary-dark);
            transform: translateY(-1px);
        }
        .btn-outline:focus-visible {
            outline: 3px solid rgba(47, 107, 176, 0.4);
            outline-offset: 2px;
        }
        .btn-accent {
            background-color: var(--accent);
            color: #fff;
            box-shadow: 0 2px 8px rgba(255, 107, 53, 0.3);
        }
        .btn-accent:hover {
            background-color: #e55a2b;
            color: #fff;
            box-shadow: 0 4px 16px rgba(255, 107, 53, 0.4);
            transform: translateY(-1px);
        }
        .btn-accent:focus-visible {
            outline: 3px solid rgba(255, 107, 53, 0.5);
            outline-offset: 2px;
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
            min-height: 36px;
            border-radius: 7px;
        }
        .btn-lg {
            padding: 16px 32px;
            font-size: 16px;
            min-height: 52px;
            border-radius: 10px;
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            font-size: 12px;
            font-weight: 500;
            line-height: 1.5;
            background-color: var(--surface-alt);
            color: var(--text-secondary);
            white-space: nowrap;
        }
        .badge-primary {
            background-color: var(--primary);
            color: #fff;
        }
        .badge-accent {
            background-color: #FFF0E8;
            color: var(--accent);
        }
        .badge-cyan {
            background-color: #E8FBFB;
            color: #009A9F;
        }

        .chip {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: var(--radius-pill);
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            background-color: var(--surface-alt);
            transition: all var(--transition);
            white-space: nowrap;
            border: 1px solid transparent;
        }
        .chip:hover {
            background-color: #E3EDF7;
            color: var(--primary-dark);
        }
        .chip.active {
            background-color: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .chip:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .card {
            background-color: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-md);
            overflow: hidden;
            transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
        }
        .card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
            border-color: #D5DEE8;
        }

        .section {
            padding: var(--spacing-xl) 0;
        }
        .section-alt {
            background-color: var(--surface-alt);
        }
        .section-tight {
            padding: var(--spacing-lg) 0;
        }

        .section-header {
            margin-bottom: var(--spacing-lg);
        }
        .section-title {
            font-size: 26px;
            font-weight: 700;
            line-height: 1.35;
            color: var(--text);
            margin: 0 0 8px;
            letter-spacing: -0.02em;
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0;
            max-width: 680px;
        }

        .text-muted {
            color: var(--text-muted);
        }
        .text-secondary {
            color: var(--text-secondary);
        }
        .fw-600 {
            font-weight: 600;
        }
        .mt-sm {
            margin-top: var(--spacing-sm);
        }
        .mt-md {
            margin-top: var(--spacing-md);
        }
        .mb-sm {
            margin-bottom: var(--spacing-sm);
        }
        .mb-md {
            margin-bottom: var(--spacing-md);
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background-color: #fff;
            border-bottom: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
        }
        .brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-md);
            min-height: var(--header-height);
            padding: var(--spacing-xs) 0;
        }
        .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: -0.01em;
            white-space: nowrap;
        }
        .brand:hover {
            color: var(--text);
        }
        .brand-logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background-color: var(--primary);
            color: #fff;
            border-radius: var(--radius-sm);
            font-size: 18px;
            font-weight: 700;
        }
        .brand-sub {
            font-size: 12px;
            font-weight: 400;
            color: var(--text-muted);
            margin-left: 2px;
        }
        .brand-actions {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            flex-shrink: 0;
        }
        .search-form {
            display: flex;
            align-items: center;
            gap: 4px;
            background-color: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-pill);
            padding: 4px 12px 4px 16px;
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .search-form:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(47, 107, 176, 0.15);
        }
        .search-form input {
            border: none;
            background: transparent;
            padding: 6px 0;
            font-size: 14px;
            color: var(--text);
            outline: none;
            min-width: 180px;
        }
        .search-form input::placeholder {
            color: var(--text-muted);
        }
        .search-form button {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background-color: var(--primary);
            color: #fff;
            transition: background-color var(--transition);
            flex-shrink: 0;
        }
        .search-form button:hover {
            background-color: var(--primary-dark);
        }
        .nav-row {
            display: flex;
            gap: 8px;
            padding: 8px 0 12px;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: thin;
            scrollbar-color: var(--border-strong) transparent;
        }
        .nav-row::-webkit-scrollbar {
            height: 4px;
        }
        .nav-row::-webkit-scrollbar-track {
            background: transparent;
        }
        .nav-row::-webkit-scrollbar-thumb {
            background-color: var(--border-strong);
            border-radius: var(--radius-pill);
        }
        .nav-row .chip {
            flex-shrink: 0;
        }

        /* Page hero */
        .page-hero {
            background: var(--surface-alt);
            border-bottom: 1px solid var(--border);
            padding: var(--spacing-lg) 0;
        }
        .page-hero-inner {
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            gap: var(--spacing-lg);
            flex-wrap: wrap;
        }
        .page-hero-content {
            flex: 1 1 480px;
            min-width: 0;
        }
        .page-hero h1 {
            font-size: 30px;
            font-weight: 700;
            line-height: 1.3;
            margin: 0 0 12px;
            letter-spacing: -0.02em;
            color: var(--text);
        }
        .page-hero-desc {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0;
            max-width: 720px;
        }
        .page-hero-image {
            flex: 0 0 260px;
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border);
        }
        .page-hero-image img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }

        /* Guide cards */
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }
        .guide-card {
            display: flex;
            flex-direction: column;
            height: 100%;
        }
        .guide-card-top {
            padding: var(--spacing-md);
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }
        .guide-card-meta {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            margin-bottom: 10px;
        }
        .guide-card-title {
            font-size: 17px;
            font-weight: 650;
            line-height: 1.45;
            margin: 0 0 10px;
            color: var(--text);
            letter-spacing: -0.01em;
        }
        .guide-card-title a {
            color: inherit;
        }
        .guide-card-title a:hover {
            color: var(--primary);
        }
        .guide-card-excerpt {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0 0 12px;
            flex-grow: 1;
        }
        .guide-card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-sm);
            padding: 0 var(--spacing-md) var(--spacing-md);
            flex-wrap: wrap;
        }
        .guide-author {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .guide-read-time {
            font-size: 13px;
            color: var(--text-muted);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .link-more {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            transition: color var(--transition);
            white-space: nowrap;
        }
        .link-more:hover {
            color: var(--primary-dark);
        }
        .link-more svg {
            transition: transform var(--transition);
        }
        .link-more:hover svg {
            transform: translateX(3px);
        }

        /* Tactic chips */
        .tactic-chips-row {
            display: flex;
            gap: 10px;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            padding: 4px 0;
            scrollbar-width: thin;
            scrollbar-color: var(--border-strong) transparent;
        }
        .tactic-chips-row::-webkit-scrollbar {
            height: 4px;
        }
        .tactic-chips-row::-webkit-scrollbar-track {
            background: transparent;
        }
        .tactic-chips-row::-webkit-scrollbar-thumb {
            background-color: var(--border-strong);
            border-radius: var(--radius-pill);
        }
        .tactic-chips-row .chip {
            flex-shrink: 0;
        }

        /* Popular guides */
        .popular-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--spacing-md);
        }
        .popular-card {
            display: flex;
            gap: var(--spacing-md);
            padding: var(--spacing-md);
            align-items: flex-start;
        }
        .popular-card-image {
            flex: 0 0 140px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            border: 1px solid var(--border);
        }
        .popular-card-image img {
            width: 100%;
            height: 90px;
            object-fit: cover;
        }
        .popular-card-content {
            flex: 1;
            min-width: 0;
        }
        .popular-card-title {
            font-size: 16px;
            font-weight: 650;
            line-height: 1.4;
            margin: 0 0 6px;
            color: var(--text);
        }
        .popular-card-title a {
            color: inherit;
        }
        .popular-card-title a:hover {
            color: var(--primary);
        }
        .popular-card-desc {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin: 0;
        }

        /* Beginner guide */
        .beginner-section {
            background: #F0F5FB;
            border: 1px solid #DCE6F0;
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
        }
        .beginner-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
            margin-top: var(--spacing-md);
        }
        .beginner-item {
            background: #fff;
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            border: 1px solid var(--border);
        }
        .beginner-item-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background-color: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: 14px;
            margin-bottom: 10px;
        }
        .beginner-item-title {
            font-size: 15px;
            font-weight: 650;
            margin: 0 0 6px;
            color: var(--text);
        }
        .beginner-item-desc {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin: 0;
        }

        /* Advanced tips */
        .advanced-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-sm);
        }
        .advanced-item {
            display: flex;
            gap: 12px;
            align-items: flex-start;
            padding: var(--spacing-sm) var(--spacing-md);
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .advanced-item:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow-sm);
        }
        .advanced-dot {
            flex-shrink: 0;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background-color: var(--accent);
            margin-top: 8px;
        }
        .advanced-text {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        .advanced-text strong {
            color: var(--text);
            font-weight: 600;
        }

        /* Comment preview */
        .comment-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            box-shadow: var(--shadow-sm);
        }
        .comment-header {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 8px;
        }
        .comment-avatar {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background-color: var(--surface-alt);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
        }
        .comment-user {
            font-size: 14px;
            font-weight: 600;
            color: var(--text);
        }
        .comment-time {
            font-size: 12px;
            color: var(--text-muted);
        }
        .comment-text {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.65;
            margin: 0 0 8px;
        }
        .comment-source {
            font-size: 12px;
            color: var(--text-muted);
            margin: 0;
        }
        .comment-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }

        /* CTA */
        .cta-banner {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 55%, var(--primary-light) 100%);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-lg);
            flex-wrap: wrap;
        }
        .cta-banner-content {
            max-width: 520px;
        }
        .cta-banner h2 {
            font-size: 24px;
            font-weight: 700;
            margin: 0 0 8px;
            line-height: 1.35;
            letter-spacing: -0.01em;
        }
        .cta-banner p {
            font-size: 15px;
            line-height: 1.65;
            margin: 0;
            color: rgba(255, 255, 255, 0.85);
        }
        .cta-banner-form {
            display: flex;
            gap: 10px;
            flex-shrink: 0;
            flex-wrap: wrap;
        }
        .cta-banner-form input {
            padding: 12px 18px;
            border-radius: var(--radius-sm);
            border: 1px solid rgba(255, 255, 255, 0.3);
            background-color: rgba(255, 255, 255, 0.12);
            color: #fff;
            font-size: 14px;
            min-width: 240px;
            outline: none;
            transition: border-color var(--transition), background-color var(--transition);
        }
        .cta-banner-form input::placeholder {
            color: rgba(255, 255, 255, 0.65);
        }
        .cta-banner-form input:focus {
            border-color: #fff;
            background-color: rgba(255, 255, 255, 0.2);
        }
        .cta-banner-form .btn {
            background-color: #fff;
            color: var(--primary-dark);
        }
        .cta-banner-form .btn:hover {
            background-color: #E8EDF3;
            color: var(--primary-dark);
        }

        /* Footer */
        .site-footer {
            background-color: #152A42;
            color: #b8c8d8;
            margin-top: auto;
            padding-top: var(--spacing-xl);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--spacing-lg);
            padding-bottom: var(--spacing-lg);
        }
        .footer-brand .brand {
            color: #fff;
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            margin: 0;
            color: #a8bccd;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin: 0 0 12px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col li {
            margin-bottom: 8px;
        }
        .footer-col a {
            color: #b8c8d8;
            font-size: 14px;
            transition: color var(--transition);
        }
        .footer-col a:hover {
            color: #fff;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding: var(--spacing-md) 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: var(--spacing-sm);
            font-size: 13px;
            color: #8aa5b8;
        }
        .footer-links-bottom a {
            color: #b8c8d8;
            font-size: 13px;
        }
        .footer-links-bottom a:hover {
            color: #fff;
        }

        /* Responsive */
        @media (max-width: 992px) {
            .guide-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .comment-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .beginner-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .page-hero-inner {
                flex-direction: column;
            }
            .page-hero-image {
                flex: 0 1 auto;
                width: 100%;
                max-width: 420px;
            }
            .page-hero-image img {
                height: 160px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --spacing-xl: 48px;
                --spacing-xxl: 64px;
                --spacing-lg: 32px;
            }
            .section {
                padding: var(--spacing-lg) 0;
            }
            .section-title {
                font-size: 22px;
            }
            .guide-grid {
                grid-template-columns: 1fr;
            }
            .popular-grid {
                grid-template-columns: 1fr;
            }
            .comment-grid {
                grid-template-columns: 1fr;
            }
            .beginner-grid {
                grid-template-columns: 1fr;
            }
            .advanced-list {
                grid-template-columns: 1fr;
            }
            .brand-row {
                flex-wrap: wrap;
                gap: var(--spacing-xs);
            }
            .brand {
                font-size: 17px;
            }
            .brand-logo-icon {
                width: 32px;
                height: 32px;
                font-size: 16px;
            }
            .brand-sub {
                font-size: 10px;
            }
            .search-form {
                flex: 1;
                min-width: 140px;
            }
            .search-form input {
                min-width: 0;
                flex: 1;
            }
            .nav-row {
                gap: 6px;
            }
            .nav-row .chip {
                padding: 6px 14px;
                font-size: 13px;
            }
            .page-hero h1 {
                font-size: 24px;
            }
            .page-hero-image img {
                height: 140px;
            }
            .cta-banner {
                flex-direction: column;
                align-items: stretch;
                padding: var(--spacing-md);
            }
            .cta-banner-form input {
                width: 100%;
                min-width: 0;
            }
            .cta-banner-form {
                flex-direction: column;
            }
            .cta-banner-form .btn {
                width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .popular-card {
                flex-direction: column;
            }
            .popular-card-image {
                flex: 0 0 auto;
                width: 100%;
            }
            .popular-card-image img {
                height: 120px;
                width: 100%;
            }
            .guide-card-footer {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }
        }

        @media (max-width: 520px) {
            .brand-row {
                flex-direction: column;
                align-items: flex-start;
            }
            .brand-actions {
                width: 100%;
            }
            .search-form {
                width: 100%;
            }
            .page-hero-image {
                max-width: 100%;
                width: 100%;
            }
            .page-hero-image img {
                height: 120px;
            }
            .btn {
                padding: 10px 18px;
                font-size: 14px;
            }
            .search-form input {
                font-size: 13px;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #2F6BB0;
            --primary-dark: #1D4E89;
            --primary-light: #6BA3D6;
            --accent: #FF6B35;
            --accent-cyan: #00C2C7;
            --bg: #F5F8FC;
            --surface: #FFFFFF;
            --surface-alt: #EFF4FA;
            --text: #1A2B3C;
            --text-secondary: #4A5F73;
            --text-muted: #7A8DA3;
            --border: #E8EDF3;
            --border-strong: #D0D7E2;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-pill: 999px;
            --shadow-sm: 0 2px 6px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.05);
            --shadow-lg: 0 8px 20px rgba(0, 0, 0, 0.08);
            --shadow-xl: 0 16px 40px rgba(0, 0, 0, 0.1);
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 64px;
            --spacing-xxl: 96px;
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
            --font-mono: "SF Mono", "Consolas", "Menlo", monospace;
            --transition: 0.2s ease;
            --header-height: 64px;
            --nav-height: 48px;
        }

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

        html {
            -webkit-text-size-adjust: 100%;
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background-color: var(--bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            overflow-x: hidden;
        }

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

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

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

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

        ul,
        ol {
            list-style: none;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--spacing-md);
        }
        .container-wide {
            max-width: 1360px;
        }
        .container-narrow {
            max-width: 860px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            line-height: 1.4;
            transition: all var(--transition);
            white-space: nowrap;
            min-height: 44px;
            text-align: center;
        }
        .btn-primary {
            background-color: var(--primary);
            color: #fff;
            box-shadow: 0 2px 8px rgba(47, 107, 176, 0.25);
        }
        .btn-primary:hover {
            background-color: var(--primary-dark);
            color: #fff;
            box-shadow: 0 4px 16px rgba(47, 107, 176, 0.35);
            transform: translateY(-1px);
        }
        .btn-primary:focus-visible {
            outline: 3px solid rgba(47, 107, 176, 0.5);
            outline-offset: 2px;
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(47, 107, 176, 0.25);
        }
        .btn-outline {
            background-color: transparent;
            color: var(--primary);
            border: 1.5px solid var(--primary);
        }
        .btn-outline:hover {
            background-color: rgba(47, 107, 176, 0.06);
            color: var(--primary-dark);
            border-color: var(--primary-dark);
            transform: translateY(-1px);
        }
        .btn-outline:focus-visible {
            outline: 3px solid rgba(47, 107, 176, 0.4);
            outline-offset: 2px;
        }
        .btn-accent {
            background-color: var(--accent);
            color: #fff;
            box-shadow: 0 2px 8px rgba(255, 107, 53, 0.3);
        }
        .btn-accent:hover {
            background-color: #e55a2b;
            color: #fff;
            box-shadow: 0 4px 16px rgba(255, 107, 53, 0.4);
            transform: translateY(-1px);
        }
        .btn-accent:focus-visible {
            outline: 3px solid rgba(255, 107, 53, 0.5);
            outline-offset: 2px;
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
            min-height: 36px;
            border-radius: 7px;
        }
        .btn-lg {
            padding: 16px 32px;
            font-size: 16px;
            min-height: 52px;
            border-radius: 10px;
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            font-size: 12px;
            font-weight: 500;
            line-height: 1.5;
            background-color: var(--surface-alt);
            color: var(--text-secondary);
            white-space: nowrap;
        }
        .badge-primary {
            background-color: var(--primary);
            color: #fff;
        }
        .badge-accent {
            background-color: #FFF0E8;
            color: var(--accent);
        }
        .badge-cyan {
            background-color: #E8FBFB;
            color: #009A9F;
        }
        .badge-green {
            background-color: #E8F7EE;
            color: #0A8754;
        }
        .badge-red {
            background-color: #FDECEC;
            color: #C0392B;
        }

        .chip {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: var(--radius-pill);
            font-size: 14px;
            font-weight: 500;
            line-height: 1.4;
            background-color: var(--surface-alt);
            color: var(--text-secondary);
            white-space: nowrap;
            transition: all var(--transition);
            border: 1px solid transparent;
            flex-shrink: 0;
        }
        .chip:hover {
            background-color: #E3EEF7;
            color: var(--primary-dark);
        }
        .chip.active {
            background-color: var(--primary);
            color: #fff;
            box-shadow: 0 2px 8px rgba(47, 107, 176, 0.3);
            border-color: var(--primary);
        }
        .chip:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        /* Header */
        .site-header {
            background-color: var(--surface);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
        }
        .brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: var(--header-height);
            padding: var(--spacing-xs) 0;
            gap: var(--spacing-sm);
            flex-wrap: wrap;
        }
        .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: 0.5px;
            line-height: 1.2;
            flex-shrink: 0;
        }
        .brand:hover {
            color: var(--primary);
        }
        .brand-logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background-color: var(--primary);
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .brand-sub {
            display: block;
            font-size: 11px;
            font-weight: 400;
            color: var(--text-muted);
            letter-spacing: 1px;
            margin-top: 1px;
        }
        .brand-actions {
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
        }
        .search-form {
            display: flex;
            align-items: center;
            gap: 0;
            background-color: var(--bg);
            border: 1px solid var(--border-strong);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: all var(--transition);
            min-width: 240px;
        }
        .search-form:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(47, 107, 176, 0.1);
        }
        .search-form input {
            flex: 1;
            padding: 8px 14px;
            border: none;
            background: transparent;
            font-size: 14px;
            color: var(--text);
            outline: none;
            min-width: 0;
        }
        .search-form input::placeholder {
            color: var(--text-muted);
        }
        .search-form button {
            padding: 8px 14px;
            background: transparent;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            justify-content: center;
            transition: color var(--transition);
        }
        .search-form button:hover {
            color: var(--primary);
        }
        .nav-row {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: var(--spacing-xs) 0 var(--spacing-sm);
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: thin;
            scrollbar-color: var(--border-strong) transparent;
            min-height: var(--nav-height);
        }
        .nav-row::-webkit-scrollbar {
            height: 3px;
        }
        .nav-row::-webkit-scrollbar-track {
            background: transparent;
        }
        .nav-row::-webkit-scrollbar-thumb {
            background-color: var(--border-strong);
            border-radius: 99px;
        }
        .nav-row .chip {
            font-size: 14px;
            padding: 8px 18px;
        }

        /* Hero Section */
        .page-hero {
            position: relative;
            background-image: url('/assets/images/fc37ab1c077e85f9.webp');
            background-size: cover;
            background-position: center;
            background-color: var(--primary-dark);
            min-height: 360px;
            display: flex;
            align-items: center;
            color: #fff;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(29, 78, 137, 0.88) 0%, rgba(29, 78, 137, 0.7) 50%, rgba(29, 78, 137, 0.55) 100%);
            z-index: 1;
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
            padding-top: var(--spacing-xl);
            padding-bottom: var(--spacing-xl);
        }
        .page-hero-inner {
            max-width: 720px;
        }
        .page-hero h1 {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.3;
            color: #fff;
            margin-bottom: var(--spacing-sm);
            letter-spacing: 0.5px;
        }
        .page-hero p {
            font-size: 18px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.88);
            margin-bottom: var(--spacing-md);
            max-width: 600px;
        }
        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-sm);
            align-items: center;
        }
        .hero-meta .badge {
            background-color: rgba(255, 255, 255, 0.15);
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.25);
            backdrop-filter: blur(4px);
            font-size: 13px;
            padding: 6px 16px;
        }
        .hero-meta .badge-accent {
            background-color: rgba(255, 107, 53, 0.85);
            border-color: rgba(255, 107, 53, 0.9);
            color: #fff;
        }

        /* Sections */
        .section {
            padding: var(--spacing-xl) 0;
        }
        .section-alt {
            background-color: var(--surface-alt);
        }
        .section-white {
            background-color: var(--surface);
        }
        .section-header {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: var(--spacing-md);
            margin-bottom: var(--spacing-lg);
            flex-wrap: wrap;
        }
        .section-header h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text);
            line-height: 1.3;
            letter-spacing: 0.3px;
        }
        .section-header .section-subtitle {
            font-size: 15px;
            color: var(--text-muted);
            max-width: 420px;
            line-height: 1.6;
        }
        .section-header .badge {
            margin-left: auto;
        }

        /* Team Data Cards */
        .team-card-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--spacing-md);
        }
        .team-card {
            background-color: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }
        .team-card:hover {
            box-shadow: var(--shadow-lg);
            border-color: #D4E1EF;
            transform: translateY(-2px);
        }
        .team-card:focus-within {
            outline: 2px solid var(--primary-light);
            outline-offset: 2px;
        }
        .team-card .rank {
            font-size: 32px;
            font-weight: 700;
            color: var(--primary);
            font-family: var(--font-mono);
            min-width: 48px;
            text-align: center;
            line-height: 1;
            flex-shrink: 0;
        }
        .team-card .rank.top-1 {
            color: var(--accent);
        }
        .team-card .rank.top-2 {
            color: var(--accent-cyan);
        }
        .team-card .rank.top-3 {
            color: var(--primary-light);
        }
        .team-info {
            flex: 1;
            min-width: 0;
        }
        .team-info .team-name {
            font-size: 17px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 2px;
            letter-spacing: 0.3px;
        }
        .team-info .team-sub {
            font-size: 13px;
            color: var(--text-muted);
            display: block;
            margin-bottom: 6px;
        }
        .team-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 4px 12px;
        }
        .team-stats .stat-item {
            font-size: 13px;
            color: var(--text-secondary);
            white-space: nowrap;
        }
        .team-stats .stat-item strong {
            color: var(--text);
            font-weight: 600;
            font-family: var(--font-mono);
        }
        .team-trend {
            display: flex;
            align-items: center;
            gap: 4px;
            font-size: 14px;
            font-weight: 600;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .team-trend.up {
            color: #0A8754;
        }
        .team-trend.down {
            color: #C0392B;
        }
        .team-trend .trend-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            font-size: 14px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .team-trend.up .trend-icon {
            background-color: #E8F7EE;
            color: #0A8754;
        }
        .team-trend.down .trend-icon {
            background-color: #FDECEC;
            color: #C0392B;
        }
        .team-card .detail-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            white-space: nowrap;
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            align-self: center;
            flex-shrink: 0;
        }
        .team-card .detail-link:hover {
            color: var(--primary-dark);
            background-color: rgba(47, 107, 176, 0.06);
        }

        /* Bar Chart */
        .bar-chart-section {
            background-color: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: var(--spacing-md);
            box-shadow: var(--shadow-sm);
        }
        .bar-chart-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: var(--spacing-md);
            padding-bottom: var(--spacing-xs);
            border-bottom: 1px solid var(--border);
        }
        .bar-chart {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }
        .bar-chart-row {
            display: grid;
            grid-template-columns: 120px 1fr 48px;
            align-items: center;
            gap: var(--spacing-sm);
        }
        .bar-chart-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-secondary);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .bar-chart-track {
            background-color: var(--surface-alt);
            border-radius: var(--radius-pill);
            height: 14px;
            overflow: hidden;
            position: relative;
        }
        .bar-chart-fill {
            height: 100%;
            border-radius: var(--radius-pill);
            background: linear-gradient(90deg, var(--primary-light), var(--primary));
            transition: width 0.4s ease;
            min-width: 4px;
        }
        .bar-chart-fill.accent {
            background: linear-gradient(90deg, #FFB89A, var(--accent));
        }
        .bar-chart-fill.cyan {
            background: linear-gradient(90deg, #8AE8EA, var(--accent-cyan));
        }
        .bar-chart-value {
            font-size: 14px;
            font-weight: 700;
            color: var(--text);
            font-family: var(--font-mono);
            text-align: right;
        }

        /* Player Hot List */
        .player-hot-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }
        .player-card {
            background-color: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: var(--spacing-sm);
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .player-card:hover {
            box-shadow: var(--shadow-lg);
            border-color: #D4E1EF;
            transform: translateY(-2px);
        }
        .player-rank {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-muted);
            font-family: var(--font-mono);
            min-width: 32px;
            text-align: center;
            flex-shrink: 0;
        }
        .player-rank.top-1 {
            color: var(--accent);
        }
        .player-avatar {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            object-fit: cover;
            flex-shrink: 0;
            border: 2px solid var(--surface-alt);
        }
        .player-info {
            flex: 1;
            min-width: 0;
        }
        .player-info .player-name {
            font-size: 15px;
            font-weight: 700;
            color: var(--text);
        }
        .player-info .player-team {
            font-size: 12px;
            color: var(--text-muted);
            display: block;
        }
        .player-data {
            text-align: right;
            flex-shrink: 0;
        }
        .player-data .key-stat {
            font-size: 16px;
            font-weight: 700;
            color: var(--primary);
            font-family: var(--font-mono);
            display: block;
        }
        .player-data .stat-label {
            font-size: 11px;
            color: var(--text-muted);
        }

        /* Data Note */
        .data-note {
            background-color: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            display: flex;
            align-items: flex-start;
            gap: var(--spacing-sm);
            box-shadow: var(--shadow-sm);
        }
        .data-note .note-icon {
            font-size: 32px;
            flex-shrink: 0;
            line-height: 1;
        }
        .data-note h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 6px;
        }
        .data-note p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .data-note ul {
            margin-top: 6px;
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }
        .data-note ul li {
            font-size: 13px;
            color: var(--text-secondary);
            background-color: var(--surface-alt);
            padding: 4px 12px;
            border-radius: var(--radius-pill);
        }

        /* Compare Box */
        .compare-box {
            background-color: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: var(--spacing-md);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-md);
            flex-wrap: wrap;
            box-shadow: var(--shadow-sm);
        }
        .compare-box .compare-info h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 4px;
        }
        .compare-box .compare-info p {
            font-size: 14px;
            color: var(--text-secondary);
            max-width: 480px;
        }
        .compare-selects {
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
            flex-wrap: wrap;
        }
        .compare-selects select {
            padding: 8px 12px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-strong);
            background-color: var(--bg);
            font-size: 14px;
            color: var(--text);
            outline: none;
            transition: all var(--transition);
            min-width: 120px;
        }
        .compare-selects select:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(47, 107, 176, 0.1);
        }
        .compare-selects span {
            color: var(--text-muted);
            font-size: 14px;
            font-weight: 600;
        }

        /* CTA */
        .cta-band {
            background-color: var(--primary-dark);
            color: #fff;
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-band::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at top right, rgba(255, 107, 53, 0.25) 0%, transparent 60%);
            pointer-events: none;
        }
        .cta-band .cta-inner {
            position: relative;
            z-index: 1;
            max-width: 560px;
            margin: 0 auto;
        }
        .cta-band h2 {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 8px;
            color: #fff;
        }
        .cta-band p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: var(--spacing-md);
        }
        .cta-form {
            display: flex;
            gap: var(--spacing-xs);
            max-width: 420px;
            margin: 0 auto;
        }
        .cta-form input {
            flex: 1;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            border: none;
            font-size: 15px;
            color: var(--text);
            background-color: #fff;
            outline: none;
            min-width: 0;
        }
        .cta-form input:focus {
            box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.4);
        }
        .cta-form .btn {
            flex-shrink: 0;
        }

        /* Footer */
        .site-footer {
            background-color: #172B3F;
            color: #B8C9D8;
            padding: var(--spacing-xl) 0 var(--spacing-sm);
            margin-top: auto;
            border-top: 1px solid #1E3549;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--spacing-lg);
            margin-bottom: var(--spacing-lg);
        }
        .footer-brand .brand {
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            margin-bottom: var(--spacing-xs);
        }
        .footer-brand .brand:hover {
            color: #CFE2F5;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: #8FA6B8;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: var(--spacing-sm);
            letter-spacing: 0.3px;
        }
        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col ul a {
            font-size: 14px;
            color: #8FA6B8;
            transition: color var(--transition);
        }
        .footer-col ul a:hover {
            color: #CFE2F5;
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-sm);
            padding-top: var(--spacing-sm);
            border-top: 1px solid #1E3549;
            font-size: 13px;
            color: #7A93A6;
            flex-wrap: wrap;
        }
        .footer-links-bottom a {
            color: #7A93A6;
            font-size: 13px;
        }
        .footer-links-bottom a:hover {
            color: #CFE2F5;
        }

        /* Responsive */
        @media (max-width: 992px) {
            :root {
                --spacing-xl: 48px;
                --spacing-xxl: 64px;
            }
            .team-card-list {
                grid-template-columns: 1fr;
            }
            .player-hot-list {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .bar-chart-row {
                grid-template-columns: 100px 1fr 42px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --spacing-xl: 40px;
                --spacing-lg: 32px;
                --spacing-md: 20px;
            }
            .brand-row {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }
            .brand-actions {
                width: 100%;
            }
            .search-form {
                width: 100%;
                min-width: 0;
            }
            .page-hero {
                min-height: 300px;
            }
            .page-hero h1 {
                font-size: 26px;
            }
            .page-hero p {
                font-size: 16px;
            }
            .section-header {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .player-hot-list {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }
            .cta-form {
                flex-direction: column;
            }
            .compare-box {
                flex-direction: column;
                align-items: flex-start;
            }
            .bar-chart-row {
                grid-template-columns: 80px 1fr 38px;
                gap: 8px;
            }
            .bar-chart-label {
                font-size: 12px;
            }
            .bar-chart-value {
                font-size: 12px;
            }
            .team-card {
                flex-direction: column;
                align-items: flex-start;
            }
            .team-card .rank {
                font-size: 28px;
                min-width: auto;
            }
            .team-card .detail-link {
                align-self: flex-start;
                padding: 4px 8px;
            }
            .team-trend {
                align-self: flex-start;
            }
        }

        @media (max-width: 520px) {
            :root {
                --spacing-xl: 32px;
                --spacing-lg: 24px;
                --spacing-md: 16px;
                --spacing-sm: 12px;
            }
            .page-hero h1 {
                font-size: 22px;
            }
            .page-hero p {
                font-size: 15px;
                line-height: 1.6;
            }
            .bar-chart-row {
                grid-template-columns: 70px 1fr 34px;
                gap: 6px;
            }
            .bar-chart-label {
                font-size: 11px;
            }
            .bar-chart-value {
                font-size: 11px;
            }
            .compare-selects {
                flex-direction: column;
                width: 100%;
            }
            .compare-selects select {
                width: 100%;
            }
            .compare-selects span {
                text-align: center;
            }
            .nav-row {
                gap: 6px;
            }
            .nav-row .chip {
                font-size: 13px;
                padding: 7px 14px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #2F6BB0;
            --primary-dark: #1D4E89;
            --primary-light: #6BA3D6;
            --accent: #FF6B35;
            --accent-cyan: #00C2C7;
            --bg: #F5F8FC;
            --surface: #FFFFFF;
            --surface-alt: #EFF4FA;
            --text: #1A2B3C;
            --text-secondary: #4A5F73;
            --text-muted: #7A8DA3;
            --border: #E8EDF3;
            --border-strong: #D0D7E2;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-pill: 999px;
            --shadow-sm: 0 2px 6px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.05);
            --shadow-lg: 0 8px 20px rgba(0, 0, 0, 0.08);
            --shadow-xl: 0 16px 40px rgba(0, 0, 0, 0.1);
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 64px;
            --spacing-xxl: 96px;
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
            --font-mono: "SF Mono", "Consolas", "Menlo", monospace;
            --transition: 0.2s ease;
            --header-height: 64px;
            --nav-height: 48px;
        }

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

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

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background-color: var(--bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

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

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

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

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

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

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--spacing-md);
        }

        .container-wide {
            max-width: 1360px;
        }

        .container-narrow {
            max-width: 860px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            line-height: 1.4;
            transition: all var(--transition);
            white-space: nowrap;
            min-height: 44px;
            text-align: center;
        }

        .btn-primary {
            background-color: var(--primary);
            color: #fff;
            box-shadow: 0 2px 8px rgba(47, 107, 176, 0.25);
        }
        .btn-primary:hover {
            background-color: var(--primary-dark);
            color: #fff;
            box-shadow: 0 4px 16px rgba(47, 107, 176, 0.35);
            transform: translateY(-1px);
        }
        .btn-primary:focus-visible {
            outline: 3px solid rgba(47, 107, 176, 0.5);
            outline-offset: 2px;
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(47, 107, 176, 0.25);
        }

        .btn-outline {
            background-color: transparent;
            color: var(--primary);
            border: 1.5px solid var(--primary);
        }
        .btn-outline:hover {
            background-color: rgba(47, 107, 176, 0.06);
            color: var(--primary-dark);
            border-color: var(--primary-dark);
            transform: translateY(-1px);
        }
        .btn-outline:focus-visible {
            outline: 3px solid rgba(47, 107, 176, 0.4);
            outline-offset: 2px;
        }

        .btn-accent {
            background-color: var(--accent);
            color: #fff;
            box-shadow: 0 2px 8px rgba(255, 107, 53, 0.3);
        }
        .btn-accent:hover {
            background-color: #e55a2b;
            color: #fff;
            box-shadow: 0 4px 16px rgba(255, 107, 53, 0.4);
            transform: translateY(-1px);
        }
        .btn-accent:focus-visible {
            outline: 3px solid rgba(255, 107, 53, 0.5);
            outline-offset: 2px;
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
            min-height: 36px;
            border-radius: 7px;
        }
        .btn-lg {
            padding: 16px 32px;
            font-size: 16px;
            min-height: 52px;
            border-radius: 10px;
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            font-size: 12px;
            font-weight: 500;
            line-height: 1.5;
            background-color: var(--surface-alt);
            color: var(--text-secondary);
            white-space: nowrap;
        }
        .badge-primary {
            background-color: var(--primary);
            color: #fff;
        }
        .badge-accent {
            background-color: #FFF0E8;
            color: var(--accent);
        }
        .badge-cyan {
            background-color: #E8FBFB;
            color: #009A9F;
        }

        .chip {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: var(--radius-pill);
            font-size: 14px;
            font-weight: 500;
            background-color: var(--surface-alt);
            color: var(--text-secondary);
            transition: all var(--transition);
            white-space: nowrap;
            border: 1px solid transparent;
            min-width: 80px;
            justify-content: center;
        }
        .chip:hover {
            background-color: rgba(47, 107, 176, 0.12);
            color: var(--primary-dark);
            border-color: rgba(47, 107, 176, 0.2);
        }
        .chip.active {
            background-color: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: 0 2px 8px rgba(47, 107, 176, 0.3);
        }
        .chip:focus-visible {
            outline: 3px solid rgba(47, 107, 176, 0.5);
            outline-offset: 2px;
        }

        .site-header {
            background-color: var(--surface);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
        }
        .brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: var(--header-height);
            gap: var(--spacing-sm);
            padding: 8px 0;
        }
        .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: 0.02em;
        }
        .brand:hover {
            color: var(--primary);
        }
        .brand-logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background-color: var(--primary);
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .brand-sub {
            font-size: 12px;
            font-weight: 400;
            color: var(--text-muted);
            margin-left: 2px;
            letter-spacing: 0.03em;
        }
        .brand-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .search-form {
            display: flex;
            align-items: center;
            gap: 8px;
            background-color: var(--bg);
            border-radius: var(--radius-pill);
            padding: 4px 8px 4px 16px;
            border: 1px solid var(--border);
            transition: border-color var(--transition);
        }
        .search-form:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(47, 107, 176, 0.1);
        }
        .search-form input {
            border: none;
            background: transparent;
            outline: none;
            font-size: 14px;
            color: var(--text);
            min-width: 180px;
        }
        .search-form input::placeholder {
            color: var(--text-muted);
        }
        .search-form button {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background-color: var(--primary);
            color: #fff;
            transition: background-color var(--transition);
            flex-shrink: 0;
        }
        .search-form button:hover {
            background-color: var(--primary-dark);
        }

        .nav-row {
            display: flex;
            align-items: center;
            gap: 8px;
            overflow-x: auto;
            padding: 8px 0;
            min-height: var(--nav-height);
            scrollbar-width: thin;
            scrollbar-color: var(--primary-light) transparent;
        }
        .nav-row::-webkit-scrollbar {
            height: 4px;
        }
        .nav-row::-webkit-scrollbar-track {
            background: transparent;
        }
        .nav-row::-webkit-scrollbar-thumb {
            background-color: var(--primary-light);
            border-radius: var(--radius-pill);
        }

        main {
            flex: 1;
        }

        .site-footer {
            background-color: #1A2B3C;
            color: #B8C7D9;
            padding: 48px 0 0;
            margin-top: var(--spacing-xl);
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--spacing-lg);
            padding-bottom: var(--spacing-lg);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .site-footer .footer-brand .brand {
            color: #fff;
            font-size: 17px;
            margin-bottom: 12px;
        }
        .site-footer .footer-brand .brand:hover {
            color: var(--primary-light);
        }
        .site-footer .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: #8FA3B8;
            max-width: 360px;
        }
        .site-footer .footer-col h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: 0.03em;
        }
        .site-footer .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer .footer-col ul li {
            margin-bottom: 10px;
        }
        .site-footer .footer-col ul li a {
            color: #8FA3B8;
            font-size: 14px;
            transition: color var(--transition);
        }
        .site-footer .footer-col ul li a:hover {
            color: var(--primary-light);
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding: 20px 0 28px;
            font-size: 13px;
            color: #6B8096;
        }
        .footer-links-bottom a {
            color: #8FA3B8;
            font-size: 13px;
            transition: color var(--transition);
        }
        .footer-links-bottom a:hover {
            color: var(--primary-light);
        }

        .section {
            padding: var(--spacing-xl) 0;
        }
        .section-alt {
            background-color: var(--surface-alt);
        }
        .section-surface {
            background-color: var(--surface);
        }
        .section-heading {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            margin-bottom: var(--spacing-lg);
            flex-wrap: wrap;
            gap: 12px;
        }
        .section-heading h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: 0.01em;
            line-height: 1.4;
        }
        .section-heading .section-subtitle {
            font-size: 14px;
            color: var(--text-muted);
            max-width: 500px;
        }

        .article-card {
            display: grid;
            grid-template-columns: 200px 1fr;
            gap: var(--spacing-md);
            background-color: var(--surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: var(--spacing-md);
            transition: all var(--transition);
        }
        .article-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
            border-color: rgba(47, 107, 176, 0.2);
        }
        .article-card .article-thumb {
            border-radius: var(--radius-sm);
            overflow: hidden;
            aspect-ratio: 16/10;
            background-color: var(--surface-alt);
        }
        .article-card .article-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s ease;
        }
        .article-card:hover .article-thumb img {
            transform: scale(1.04);
        }
        .article-card .article-body {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .article-card .article-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
            font-size: 13px;
            color: var(--text-muted);
        }
        .article-card .article-meta .article-date {
            font-family: var(--font-mono);
            font-size: 12px;
            letter-spacing: 0.02em;
        }
        .article-card .article-title {
            font-size: 18px;
            font-weight: 600;
            color: var(--text);
            line-height: 1.5;
            letter-spacing: 0.01em;
        }
        .article-card .article-title a {
            color: var(--text);
            transition: color var(--transition);
        }
        .article-card .article-title a:hover {
            color: var(--primary);
        }
        .article-card .article-excerpt {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .article-card .article-actions {
            margin-top: 4px;
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .article-card .btn-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 0;
            transition: all var(--transition);
        }
        .article-card .btn-link:hover {
            color: var(--primary-dark);
            gap: 8px;
        }
        .article-list {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }

        .chips-scroll {
            display: flex;
            gap: 8px;
            overflow-x: auto;
            padding: 4px 0;
            scrollbar-width: thin;
            scrollbar-color: var(--primary-light) transparent;
        }
        .chips-scroll::-webkit-scrollbar {
            height: 4px;
        }
        .chips-scroll::-webkit-scrollbar-track {
            background: transparent;
        }
        .chips-scroll::-webkit-scrollbar-thumb {
            background-color: var(--primary-light);
            border-radius: var(--radius-pill);
        }

        .featured-grid {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: var(--spacing-md);
        }
        .featured-card {
            background-color: var(--surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: var(--spacing-lg);
            display: flex;
            flex-direction: column;
            gap: 12px;
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }
        .featured-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }
        .featured-card .featured-badge {
            position: absolute;
            top: 16px;
            right: 16px;
            z-index: 1;
        }
        .featured-card .featured-img {
            border-radius: var(--radius-sm);
            overflow: hidden;
            aspect-ratio: 16/9;
            margin-bottom: 4px;
            background-color: var(--surface-alt);
        }
        .featured-card .featured-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .featured-card h3 {
            font-size: 19px;
            font-weight: 600;
            line-height: 1.5;
            color: var(--text);
        }
        .featured-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .featured-card .featured-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--text-muted);
        }

        .brief-list {
            display: flex;
            flex-direction: column;
            gap: 0;
            background-color: var(--surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
        }
        .brief-item {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            padding: 16px 20px;
            border-bottom: 1px solid var(--border);
            transition: background-color var(--transition);
        }
        .brief-item:last-child {
            border-bottom: none;
        }
        .brief-item:hover {
            background-color: var(--surface-alt);
        }
        .brief-item .brief-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background-color: var(--accent);
            flex-shrink: 0;
            margin-top: 8px;
        }
        .brief-item .brief-content {
            flex: 1;
        }
        .brief-item .brief-text {
            font-size: 15px;
            color: var(--text);
            line-height: 1.7;
        }
        .brief-item .brief-time {
            font-size: 12px;
            color: var(--text-muted);
            font-family: var(--font-mono);
            flex-shrink: 0;
            margin-top: 4px;
            white-space: nowrap;
        }

        .timeline {
            display: flex;
            flex-direction: column;
            gap: 0;
            position: relative;
            padding-left: 24px;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 8px;
            top: 0;
            bottom: 0;
            width: 2px;
            background-color: var(--border-strong);
            border-radius: 1px;
        }
        .timeline-item {
            position: relative;
            padding: 12px 0 20px 16px;
        }
        .timeline-item:last-child {
            padding-bottom: 0;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -20px;
            top: 18px;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background-color: var(--primary);
            border: 2px solid var(--surface);
            box-shadow: 0 0 0 2px var(--border-strong);
        }
        .timeline-item .timeline-date {
            font-size: 13px;
            font-weight: 500;
            color: var(--primary);
            font-family: var(--font-mono);
            letter-spacing: 0.02em;
        }
        .timeline-item .timeline-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            margin-top: 4px;
        }
        .timeline-item .timeline-desc {
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 2px;
        }

        .data-mini-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-sm);
        }
        .data-mini-card {
            background-color: var(--surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 20px;
            text-align: center;
            transition: all var(--transition);
        }
        .data-mini-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .data-mini-card .data-value {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary);
            font-family: var(--font-mono);
            letter-spacing: 0.01em;
        }
        .data-mini-card .data-label {
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 4px;
        }
        .data-mini-card .data-trend {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 12px;
            margin-top: 8px;
            padding: 2px 10px;
            border-radius: var(--radius-pill);
            background-color: #E8FBFB;
            color: #009A9F;
        }
        .data-mini-card .data-trend.down {
            background-color: #FFF0E8;
            color: var(--accent);
        }

        .other-channels {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-sm);
        }
        .other-channel-card {
            background-color: var(--surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 20px;
            text-align: center;
            transition: all var(--transition);
        }
        .other-channel-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: rgba(47, 107, 176, 0.25);
        }
        .other-channel-card .channel-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background-color: var(--surface-alt);
            color: var(--primary);
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .other-channel-card h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 4px;
        }
        .other-channel-card p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        .cta-banner {
            background-color: var(--primary-dark);
            border-radius: var(--radius-lg);
            padding: var(--spacing-xl) var(--spacing-lg);
            color: #fff;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-banner::before {
            content: '';
            position: absolute;
            top: -60%;
            right: -10%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background-color: rgba(255, 255, 255, 0.05);
            pointer-events: none;
        }
        .cta-banner::after {
            content: '';
            position: absolute;
            bottom: -40%;
            left: -5%;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background-color: rgba(255, 107, 53, 0.15);
            pointer-events: none;
        }
        .cta-banner h2 {
            font-size: 26px;
            font-weight: 700;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }
        .cta-banner p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.8);
            max-width: 560px;
            margin: 0 auto 24px;
            position: relative;
            z-index: 1;
        }
        .cta-banner .cta-form {
            display: flex;
            align-items: center;
            gap: 12px;
            max-width: 480px;
            margin: 0 auto;
            position: relative;
            z-index: 1;
            flex-wrap: wrap;
            justify-content: center;
        }
        .cta-banner .cta-form input {
            flex: 1;
            min-width: 220px;
            padding: 12px 18px;
            border-radius: var(--radius-sm);
            border: 1px solid rgba(255, 255, 255, 0.3);
            background-color: rgba(255, 255, 255, 0.12);
            color: #fff;
            font-size: 14px;
            outline: none;
            transition: all var(--transition);
        }
        .cta-banner .cta-form input::placeholder {
            color: rgba(255, 255, 255, 0.6);
        }
        .cta-banner .cta-form input:focus {
            border-color: rgba(255, 255, 255, 0.7);
            background-color: rgba(255, 255, 255, 0.18);
            box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.1);
        }

        .page-head {
            padding: var(--spacing-lg) 0 var(--spacing-sm);
            background-color: var(--surface);
            border-bottom: 1px solid var(--border);
        }
        .page-head .breadcrumb {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 12px;
            flex-wrap: wrap;
        }
        .page-head .breadcrumb a {
            color: var(--text-muted);
            transition: color var(--transition);
        }
        .page-head .breadcrumb a:hover {
            color: var(--primary);
        }
        .page-head .breadcrumb .sep {
            color: var(--border-strong);
            font-size: 12px;
        }
        .page-head h1 {
            font-size: 30px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: 0.01em;
            line-height: 1.4;
        }
        .page-head .page-head-desc {
            font-size: 15px;
            color: var(--text-secondary);
            max-width: 680px;
            margin-top: 8px;
            line-height: 1.7;
        }

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

        @media (max-width: 768px) {
            .brand-row {
                flex-wrap: wrap;
                gap: 8px;
            }
            .search-form {
                flex: 1;
                min-width: 180px;
            }
            .search-form input {
                min-width: 100px;
                flex: 1;
            }
            .article-card {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .article-card .article-thumb {
                aspect-ratio: 16/9;
            }
            .data-mini-grid {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }
            .other-channels {
                grid-template-columns: 1fr;
                gap: 8px;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .section {
                padding: var(--spacing-lg) 0;
            }
            .page-head h1 {
                font-size: 24px;
            }
            .cta-banner h2 {
                font-size: 22px;
            }
            .cta-banner {
                padding: var(--spacing-lg) var(--spacing-md);
            }
        }

        @media (max-width: 520px) {
            .brand-sub {
                display: none;
            }
            .brand {
                font-size: 16px;
            }
            .brand-logo-icon {
                width: 32px;
                height: 32px;
                font-size: 16px;
            }
            .data-mini-grid {
                grid-template-columns: 1fr;
            }
            .section-heading h2 {
                font-size: 20px;
            }
            .article-card .article-title {
                font-size: 16px;
            }
            .article-card {
                padding: 14px;
            }
            .featured-card {
                padding: 16px;
            }
        }

/* roulang page: category4 */
:root {
            --primary: #2F6BB0;
            --primary-dark: #1D4E89;
            --primary-light: #6BA3D6;
            --accent: #FF6B35;
            --accent-cyan: #00C2C7;
            --bg: #F5F8FC;
            --surface: #FFFFFF;
            --surface-alt: #EFF4FA;
            --text: #1A2B3C;
            --text-secondary: #4A5F73;
            --text-muted: #7A8DA3;
            --border: #E8EDF3;
            --border-strong: #D0D7E2;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-pill: 999px;
            --shadow-sm: 0 2px 6px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.05);
            --shadow-lg: 0 8px 20px rgba(0, 0, 0, 0.08);
            --shadow-xl: 0 16px 40px rgba(0, 0, 0, 0.1);
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 64px;
            --spacing-xxl: 96px;
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
            --font-mono: "SF Mono", "Consolas", "Menlo", monospace;
            --transition: 0.2s ease;
            --header-height: 64px;
            --nav-height: 48px;
        }

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

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

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background-color: var(--bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

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

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

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

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

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

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--spacing-md);
        }

        .container-wide {
            max-width: 1360px;
        }

        .container-narrow {
            max-width: 860px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            line-height: 1.4;
            transition: all var(--transition);
            white-space: nowrap;
            min-height: 44px;
            text-align: center;
        }

        .btn-primary {
            background-color: var(--primary);
            color: #fff;
            box-shadow: 0 2px 8px rgba(47, 107, 176, 0.25);
        }

        .btn-primary:hover {
            background-color: var(--primary-dark);
            color: #fff;
            box-shadow: 0 4px 16px rgba(47, 107, 176, 0.35);
            transform: translateY(-1px);
        }

        .btn-primary:focus-visible {
            outline: 3px solid rgba(47, 107, 176, 0.5);
            outline-offset: 2px;
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(47, 107, 176, 0.25);
        }

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

        .btn-outline:hover {
            background-color: rgba(47, 107, 176, 0.06);
            color: var(--primary-dark);
            border-color: var(--primary-dark);
            transform: translateY(-1px);
        }

        .btn-outline:focus-visible {
            outline: 3px solid rgba(47, 107, 176, 0.4);
            outline-offset: 2px;
        }

        .btn-accent {
            background-color: var(--accent);
            color: #fff;
            box-shadow: 0 2px 8px rgba(255, 107, 53, 0.3);
        }

        .btn-accent:hover {
            background-color: #e55a2b;
            color: #fff;
            box-shadow: 0 4px 16px rgba(255, 107, 53, 0.4);
            transform: translateY(-1px);
        }

        .btn-accent:focus-visible {
            outline: 3px solid rgba(255, 107, 53, 0.5);
            outline-offset: 2px;
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
            min-height: 36px;
            border-radius: 7px;
        }

        .btn-lg {
            padding: 16px 32px;
            font-size: 16px;
            min-height: 52px;
            border-radius: 10px;
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            font-size: 12px;
            font-weight: 500;
            line-height: 1.5;
            background-color: var(--surface-alt);
            color: var(--text-secondary);
            white-space: nowrap;
        }

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

        .badge-accent {
            background-color: #FFF0E8;
            color: var(--accent);
        }

        .badge-cyan {
            background-color: #E8FBFB;
            color: #009A9F;
        }

        .chip {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: var(--radius-pill);
            font-size: 14px;
            font-weight: 500;
            line-height: 1.4;
            background-color: var(--surface-alt);
            color: var(--text-secondary);
            transition: all var(--transition);
            white-space: nowrap;
            border: 1px solid transparent;
        }

        .chip:hover {
            background-color: var(--primary-light);
            color: var(--primary-dark);
            border-color: rgba(47, 107, 176, 0.2);
        }

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

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

        .card {
            background: var(--surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-md);
            transition: box-shadow var(--transition), transform var(--transition);
            overflow: hidden;
        }

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

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

        .section-alt {
            background-color: var(--surface-alt);
        }

        .section-header {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: var(--spacing-md);
            margin-bottom: var(--spacing-lg);
            flex-wrap: wrap;
        }

        .section-title {
            font-size: 24px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text);
            letter-spacing: -0.01em;
        }

        .section-subtitle {
            font-size: 15px;
            color: var(--text-muted);
            max-width: 520px;
            line-height: 1.6;
            margin-top: 4px;
        }

        .section-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

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

        .site-header {
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
        }

        .brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-md);
            min-height: var(--header-height);
            padding: var(--spacing-xs) 0;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: -0.02em;
        }

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

        .brand-logo-icon {
            width: 36px;
            height: 36px;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .brand-sub {
            font-size: 12px;
            color: var(--text-muted);
            font-weight: 400;
            margin-left: 4px;
        }

        .brand-actions {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            flex-shrink: 0;
        }

        .search-form {
            display: flex;
            align-items: center;
            gap: 4px;
            background: var(--surface-alt);
            border: 1px solid var(--border);
            border-radius: var(--radius-pill);
            padding: 4px 8px 4px 16px;
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        .search-form:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(47, 107, 176, 0.12);
        }

        .search-form input {
            border: none;
            outline: none;
            background: transparent;
            font-size: 14px;
            color: var(--text);
            width: 180px;
        }

        .search-form input::placeholder {
            color: var(--text-muted);
        }

        .search-form button {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            color: var(--primary);
            transition: background var(--transition);
        }

        .search-form button:hover {
            background: rgba(47, 107, 176, 0.1);
        }

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

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

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

        .nav-row::-webkit-scrollbar-track {
            background: transparent;
        }

        .site-footer {
            background: var(--surface);
            border-top: 1px solid var(--border);
            padding: var(--spacing-xl) 0 var(--spacing-md);
            margin-top: auto;
        }

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

        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            margin-top: var(--spacing-sm);
            max-width: 320px;
            line-height: 1.6;
        }

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

        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: var(--spacing-sm);
        }

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

        .footer-col ul a {
            font-size: 14px;
            color: var(--text-muted);
            transition: color var(--transition);
        }

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

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

        .footer-links-bottom {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-links-bottom a {
            color: var(--text-muted);
            font-size: 13px;
        }

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

        .hero-banner {
            padding: var(--spacing-lg) 0;
            background: var(--surface);
            border-bottom: 1px solid var(--border);
        }

        .hero-content {
            display: grid;
            grid-template-columns: 1fr 380px;
            gap: var(--spacing-lg);
            align-items: center;
        }

        .hero-text h1 {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.25;
            letter-spacing: -0.02em;
            color: var(--text);
            margin-bottom: var(--spacing-sm);
        }

        .hero-text p {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 500px;
        }

        .hero-meta {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            margin-top: var(--spacing-sm);
            flex-wrap: wrap;
        }

        .hero-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .hero-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .feature-post {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-lg);
            background: var(--surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-md);
            overflow: hidden;
            transition: box-shadow var(--transition), transform var(--transition);
        }

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

        .feature-post-image {
            min-height: 300px;
            background-size: cover;
            background-position: center;
            position: relative;
        }

        .feature-post-image .badge {
            position: absolute;
            top: var(--spacing-md);
            left: var(--spacing-md);
            z-index: 2;
        }

        .feature-post-body {
            padding: var(--spacing-lg);
            display: flex;
            flex-direction: column;
            justify-content: center;
            gap: var(--spacing-sm);
        }

        .feature-post-body h3 {
            font-size: 22px;
            font-weight: 700;
            line-height: 1.35;
            letter-spacing: -0.01em;
            color: var(--text);
        }

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

        .post-meta {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            font-size: 13px;
            color: var(--text-muted);
            flex-wrap: wrap;
        }

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

        .article-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }

        .article-card {
            display: flex;
            flex-direction: column;
            background: var(--surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: box-shadow var(--transition), transform var(--transition);
            height: 100%;
        }

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

        .article-card-image {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            position: relative;
        }

        .article-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition);
        }

        .article-card:hover .article-card-image img {
            transform: scale(1.03);
        }

        .article-card-image .badge {
            position: absolute;
            top: 12px;
            left: 12px;
            z-index: 2;
        }

        .article-card-body {
            padding: var(--spacing-md);
            display: flex;
            flex-direction: column;
            gap: var(--spacing-xs);
            flex: 1;
        }

        .article-card-body h3 {
            font-size: 16px;
            font-weight: 600;
            line-height: 1.5;
            color: var(--text);
            letter-spacing: -0.005em;
        }

        .article-card-body .excerpt {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }

        .read-more {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            margin-top: auto;
            transition: color var(--transition);
        }

        .read-more:hover {
            color: var(--primary-dark);
        }

        .read-more svg {
            transition: transform var(--transition);
        }

        .read-more:hover svg {
            transform: translateX(3px);
        }

        .trend-bar {
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-sm);
        }

        .trend-item {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 18px;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-pill);
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition);
        }

        .trend-item:hover {
            border-color: var(--primary);
            color: var(--primary);
            box-shadow: var(--shadow-sm);
        }

        .trend-item .trend-count {
            font-size: 12px;
            font-weight: 600;
            color: var(--accent);
            background: #FFF0E8;
            padding: 2px 8px;
            border-radius: var(--radius-pill);
        }

        .expert-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--spacing-md);
        }

        .expert-card {
            display: flex;
            gap: var(--spacing-md);
            background: var(--surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            padding: var(--spacing-md);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }

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

        .expert-avatar {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--surface-alt);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            font-weight: 700;
            color: var(--primary);
            flex-shrink: 0;
            border: 2px solid var(--border);
        }

        .expert-info {
            display: flex;
            flex-direction: column;
            gap: 4px;
            flex: 1;
        }

        .expert-info h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
        }

        .expert-info .expert-title {
            font-size: 13px;
            color: var(--primary);
            font-weight: 500;
        }

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

        .report-entry {
            display: flex;
            align-items: center;
            gap: var(--spacing-md);
            background: var(--surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            padding: var(--spacing-md);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }

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

        .report-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-sm);
            background: var(--surface-alt);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            flex-shrink: 0;
            color: var(--primary);
        }

        .report-info {
            flex: 1;
        }

        .report-info h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
        }

        .report-info p {
            font-size: 13px;
            color: var(--text-muted);
        }

        .whitepaper-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            padding: var(--spacing-lg);
            box-shadow: var(--shadow-md);
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-md);
        }

        .whitepaper-info h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 4px;
        }

        .whitepaper-info p {
            font-size: 14px;
            color: var(--text-secondary);
            max-width: 500px;
        }

        .subscribe-cta {
            background: var(--primary);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-md);
            box-shadow: var(--shadow-lg);
        }

        .subscribe-cta h3 {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 4px;
        }

        .subscribe-cta p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.8);
            max-width: 480px;
        }

        .subscribe-form {
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-sm);
            min-width: 300px;
            flex: 1;
            max-width: 500px;
        }

        .subscribe-form input {
            flex: 1;
            min-width: 200px;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            border: 1px solid rgba(255, 255, 255, 0.3);
            outline: none;
            font-size: 14px;
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            transition: all var(--transition);
        }

        .subscribe-form input::placeholder {
            color: rgba(255, 255, 255, 0.6);
        }

        .subscribe-form input:focus {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.18);
            box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.2);
        }

        .subscribe-form .btn {
            background: #fff;
            color: var(--primary);
            font-weight: 700;
        }

        .subscribe-form .btn:hover {
            background: var(--surface-alt);
            transform: translateY(-1px);
        }

        .other-channels {
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-sm);
        }

        @media (max-width: 1024px) {
            .hero-content {
                grid-template-columns: 1fr;
            }
            .hero-image {
                aspect-ratio: 16 / 7;
            }
            .feature-post {
                grid-template-columns: 1fr;
            }
            .feature-post-image {
                min-height: 220px;
            }
            .article-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .expert-list {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .section {
                padding: var(--spacing-lg) 0;
            }
            .section-title {
                font-size: 20px;
            }
            .article-grid {
                grid-template-columns: 1fr;
            }
            .hero-text h1 {
                font-size: 24px;
            }
            .search-form input {
                width: 120px;
            }
            .brand-sub {
                display: none;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }
            .subscribe-cta {
                flex-direction: column;
                align-items: flex-start;
            }
            .subscribe-form {
                width: 100%;
                min-width: 0;
            }
            .whitepaper-card {
                flex-direction: column;
                align-items: flex-start;
            }
            .section-header {
                flex-direction: column;
                align-items: flex-start;
                gap: var(--spacing-xs);
            }
            .expert-card {
                flex-direction: column;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 var(--spacing-sm);
            }
            .brand-row {
                flex-wrap: wrap;
                gap: var(--spacing-xs);
            }
            .brand-actions {
                width: 100%;
                justify-content: space-between;
            }
            .search-form {
                flex: 1;
            }
            .search-form input {
                width: 100%;
            }
            .hero-text h1 {
                font-size: 21px;
            }
            .feature-post-body {
                padding: var(--spacing-md);
            }
            .feature-post-body h3 {
                font-size: 18px;
            }
            .article-card-body h3 {
                font-size: 15px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .btn-lg {
                padding: 14px 24px;
                font-size: 15px;
            }
        }