/* roulang page: index */
:root {
            --primary: #0E3B2E;
            --primary-dark: #09271E;
            --primary-light: #1A4D3D;
            --accent-lime: #C8F169;
            --accent-orange: #F2A104;
            --accent-orange-dark: #D98A00;
            --bg-light: #F4F6F0;
            --bg-dark: #191C1F;
            --bg-dark-2: #222725;
            --text-main: #222725;
            --text-muted: #6B756F;
            --text-light: #F4F6F0;
            --text-light-muted: rgba(244,246,240,0.72);
            --border-light: #E0E5DA;
            --border-lime: #C8F169;
            --border-orange: #F2A104;
            --radius-sm: 4px;
            --radius-md: 6px;
            --radius-lg: 8px;
            --shadow-sm: 0 1px 3px rgba(14,59,46,0.06);
            --shadow-md: 0 4px 12px rgba(14,59,46,0.08);
            --shadow-lg: 0 8px 28px rgba(14,59,46,0.12);
            --font-sans: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --font-mono: 'JetBrains Mono', 'Roboto Mono', 'Consolas', monospace;
            --transition-fast: 160ms ease;
            --transition-base: 240ms ease;
            --transition-slow: 360ms ease;
            --container-max: 1240px;
            --header-height: 60px;
            --section-pad: 72px;
        }

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

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

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-main);
            background-color: #FFFFFF;
            margin: 0;
            padding: 0;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 3px;
            transition: color var(--transition-fast);
        }

        a:hover {
            color: var(--accent-orange);
        }

        a:focus-visible {
            outline: 2px solid var(--accent-orange);
            outline-offset: 2px;
            border-radius: 2px;
        }

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

        button,
        input,
        select,
        textarea {
            font-family: var(--font-sans);
            font-size: 16px;
        }

        button {
            cursor: pointer;
        }

        h1, h2, h3, h4, h5, h6 {
            font-family: var(--font-sans);
            color: var(--primary);
            line-height: 1.35;
            margin-top: 0;
        }

        h1 {
            font-size: 2.6rem;
            font-weight: 900;
            letter-spacing: -0.01em;
        }

        h2 {
            font-size: 1.9rem;
            font-weight: 700;
            letter-spacing: -0.005em;
            margin-bottom: 1.2rem;
        }

        h3 {
            font-size: 1.25rem;
            font-weight: 600;
            margin-bottom: 0.6rem;
        }

        p {
            margin: 0 0 1rem;
            color: var(--text-main);
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

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

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

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

        .section-dark {
            background-color: var(--primary);
            color: var(--text-light);
        }

        .section-dark h2,
        .section-dark h3 {
            color: #FFFFFF;
        }

        .section-dark p {
            color: var(--text-light-muted);
        }

        .sr-only {
            position: absolute !important;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0,0,0,0);
            white-space: nowrap;
            border: 0;
        }

        .text-mono {
            font-family: var(--font-mono);
            font-variant-numeric: tabular-nums;
            letter-spacing: -0.01em;
        }

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

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

        .mt-0 { margin-top: 0; }
        .mb-0 { margin-bottom: 0; }
        .mb-1 { margin-bottom: 8px; }
        .mb-2 { margin-bottom: 16px; }
        .mb-3 { margin-bottom: 24px; }
        .mb-4 { margin-bottom: 32px; }
        .mt-4 { margin-top: 32px; }

        .label-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            color: var(--primary);
            background-color: rgba(200,241,105,0.28);
            padding: 5px 14px;
            border-radius: 20px;
            border: 1px solid rgba(200,241,105,0.6);
            margin-bottom: 14px;
        }

        .label-tag--orange {
            color: var(--accent-orange-dark);
            background-color: rgba(242,161,4,0.12);
            border-color: rgba(242,161,4,0.35);
        }

        .label-tag--dark {
            color: var(--accent-lime);
            background-color: rgba(200,241,105,0.1);
            border-color: rgba(200,241,105,0.3);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-family: var(--font-sans);
            font-size: 0.95rem;
            font-weight: 600;
            letter-spacing: 0.02em;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            border: 2px solid transparent;
            text-decoration: none;
            cursor: pointer;
            transition: all var(--transition-base);
            line-height: 1.4;
            min-height: 46px;
            text-align: center;
            white-space: nowrap;
        }

        .btn:focus-visible {
            outline: 3px solid var(--accent-orange);
            outline-offset: 3px;
        }

        .btn-primary {
            background-color: var(--accent-orange);
            color: var(--text-main);
            border-color: var(--accent-orange);
        }

        .btn-primary:hover {
            background-color: var(--accent-orange-dark);
            border-color: var(--accent-orange-dark);
            color: var(--text-main);
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(242,161,4,0.32);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: none;
        }

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

        .btn-secondary:hover {
            background-color: rgba(14,59,46,0.08);
            color: var(--primary);
            border-color: var(--primary);
        }

        .btn-secondary--light {
            background-color: transparent;
            color: #FFFFFF;
            border-color: rgba(255,255,255,0.65);
        }

        .btn-secondary--light:hover {
            background-color: rgba(255,255,255,0.12);
            color: #FFFFFF;
            border-color: #FFFFFF;
        }

        .btn-sm {
            padding: 8px 18px;
            font-size: 0.85rem;
            min-height: 38px;
        }

        .btn-lg {
            padding: 15px 36px;
            font-size: 1.05rem;
            min-height: 54px;
        }

        /* Header / Nav */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background-color: rgba(255,255,255,0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-light);
            height: var(--header-height);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-base);
        }

        .site-header.scrolled {
            box-shadow: 0 2px 16px rgba(14,59,46,0.08);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            width: 100%;
        }

        .header-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
            color: var(--primary);
            font-weight: 900;
            font-size: 1.12rem;
            letter-spacing: -0.01em;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .header-logo .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            border-radius: 50%;
            background-color: var(--primary);
            color: var(--accent-lime);
            font-size: 1.1rem;
            flex-shrink: 0;
            border: 2px solid var(--accent-lime);
        }

        .header-logo:hover {
            color: var(--primary);
            text-decoration: none;
        }

        .header-logo span.logo-text {
            font-size: 1.02rem;
            letter-spacing: -0.01em;
        }

        .header-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
            flex-wrap: wrap;
        }

        .header-nav a {
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-main);
            text-decoration: none;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }

        .header-nav a:hover {
            color: var(--primary);
            background-color: rgba(14,59,46,0.06);
        }

        .header-nav a.active {
            color: var(--primary);
            font-weight: 700;
            background-color: transparent;
        }

        .header-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 14px;
            right: 14px;
            height: 2px;
            background-color: var(--accent-orange);
            border-radius: 2px;
        }

        .header-right {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .header-search {
            display: flex;
            align-items: center;
            gap: 6px;
            background-color: var(--bg-light);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            padding: 6px 12px;
            transition: border-color var(--transition-fast);
            min-width: 220px;
        }

        .header-search:focus-within {
            border-color: var(--accent-lime);
            background-color: #FFFFFF;
        }

        .header-search input {
            border: none;
            background: transparent;
            outline: none;
            font-size: 0.85rem;
            color: var(--text-main);
            width: 100%;
            padding: 4px 0;
        }

        .header-search input::placeholder {
            color: var(--text-muted);
            font-size: 0.82rem;
        }

        .header-search .search-icon {
            color: var(--text-muted);
            font-size: 0.9rem;
            flex-shrink: 0;
        }

        .header-cta {
            font-size: 0.85rem;
            padding: 8px 18px;
            min-height: 38px;
        }

        .hamburger {
            display: none;
            background: transparent;
            border: 2px solid var(--primary);
            border-radius: var(--radius-sm);
            color: var(--primary);
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all var(--transition-fast);
        }

        .hamburger:hover {
            background-color: rgba(14,59,46,0.08);
        }

        .hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background-color: var(--primary);
            position: relative;
            transition: all var(--transition-base);
        }

        .hamburger span::before,
        .hamburger span::after {
            content: '';
            position: absolute;
            width: 22px;
            height: 2px;
            background-color: var(--primary);
            left: 0;
            transition: all var(--transition-base);
        }

        .hamburger span::before { top: -7px; }
        .hamburger span::after { top: 7px; }

        .hamburger.open span { background-color: transparent; }
        .hamburger.open span::before { top: 0; transform: rotate(45deg); }
        .hamburger.open span::after { top: 0; transform: rotate(-45deg); }

        .mobile-nav {
            display: none;
            position: fixed;
            top: var(--header-height);
            left: 0;
            right: 0;
            background-color: #FFFFFF;
            border-bottom: 1px solid var(--border-light);
            box-shadow: var(--shadow-md);
            z-index: 99;
            padding: 12px 20px 20px;
            flex-direction: column;
            gap: 4px;
        }

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

        .mobile-nav a {
            display: block;
            padding: 12px 16px;
            font-size: 1rem;
            font-weight: 500;
            color: var(--text-main);
            text-decoration: none;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
        }

        .mobile-nav a:hover,
        .mobile-nav a.active {
            background-color: rgba(14,59,46,0.06);
            color: var(--primary);
        }

        .mobile-nav a.active {
            font-weight: 700;
            border-left: 3px solid var(--accent-orange);
        }

        .mobile-nav .mobile-search {
            margin-top: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
            background-color: var(--bg-light);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            padding: 10px 14px;
        }

        .mobile-nav .mobile-search input {
            border: none;
            background: transparent;
            outline: none;
            width: 100%;
            font-size: 0.9rem;
        }

        /* Hero */
        .hero {
            background-color: var(--primary);
            background-image: url('/assets/images/e93ade50a8a7c9b6.webp');
            background-size: cover;
            background-position: center center;
            background-repeat: no-repeat;
            min-height: calc(100vh - var(--header-height));
            position: relative;
            display: flex;
            align-items: center;
            overflow: hidden;
            padding: 48px 0 64px;
            color: var(--text-light);
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(14,59,46,0.92) 0%, rgba(14,59,46,0.78) 40%, rgba(25,28,31,0.55) 70%, rgba(25,28,31,0.75) 100%);
            z-index: 1;
        }

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

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

        .hero-left {
            max-width: 620px;
        }

        .hero-left .label-tag {
            background-color: rgba(200,241,105,0.15);
            border-color: rgba(200,241,105,0.5);
            color: var(--accent-lime);
        }

        .hero-left h1 {
            color: #FFFFFF;
            font-size: 2.85rem;
            margin-bottom: 16px;
            letter-spacing: -0.01em;
            line-height: 1.22;
        }

        .hero-left .hero-subtitle {
            color: var(--text-light-muted);
            font-size: 1.06rem;
            line-height: 1.85;
            margin-bottom: 28px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            align-items: center;
        }

        .hero-stats {
            display: flex;
            gap: 24px;
            margin-top: 28px;
            flex-wrap: wrap;
        }

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

        .hero-stat .stat-number {
            font-family: var(--font-mono);
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--accent-lime);
            letter-spacing: -0.02em;
        }

        .hero-stat .stat-label {
            font-size: 0.78rem;
            color: var(--text-light-muted);
            letter-spacing: 0.03em;
        }

        .hero-right {
            display: flex;
            justify-content: center;
            align-items: center;
        }

        .calc-demo-card {
            background-color: rgba(255,255,255,0.96);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            width: 100%;
            max-width: 440px;
            box-shadow: var(--shadow-lg);
            border: 1px solid rgba(200,241,105,0.4);
        }

        .calc-demo-card .calc-demo-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 18px;
            padding-bottom: 14px;
            border-bottom: 1px solid var(--border-light);
        }

        .calc-demo-card .calc-demo-header h3 {
            margin: 0;
            font-size: 1.05rem;
            color: var(--primary);
            font-weight: 700;
        }

        .calc-demo-card .calc-demo-badge {
            font-size: 0.7rem;
            font-weight: 700;
            letter-spacing: 0.05em;
            color: var(--primary);
            background-color: rgba(200,241,105,0.3);
            padding: 4px 10px;
            border-radius: 20px;
            border: 1px solid rgba(200,241,105,0.65);
            text-transform: uppercase;
        }

        .calc-row {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 10px;
            margin-bottom: 14px;
        }

        .calc-field {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .calc-field label {
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--text-muted);
            letter-spacing: 0.03em;
        }

        .calc-field input {
            border: 2px solid var(--accent-lime);
            border-radius: var(--radius-sm);
            padding: 10px 8px;
            font-family: var(--font-mono);
            font-size: 0.95rem;
            color: var(--text-main);
            background-color: #FFFFFF;
            transition: border-color var(--transition-fast);
            text-align: center;
        }

        .calc-field input:focus {
            outline: none;
            border-color: var(--accent-orange);
        }

        .calc-field input::placeholder {
            color: #B0B8B2;
        }

        .calc-actions {
            display: flex;
            gap: 10px;
            margin-top: 6px;
        }

        .calc-actions .btn {
            flex: 1;
            font-size: 0.9rem;
            padding: 10px 16px;
            min-height: 42px;
        }

        .calc-result-preview {
            margin-top: 16px;
            padding: 14px 16px;
            background-color: var(--bg-light);
            border-radius: var(--radius-sm);
            border-left: 3px solid var(--accent-lime);
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .calc-result-preview span {
            font-size: 0.82rem;
            color: var(--text-muted);
        }

        .calc-result-preview strong {
            font-family: var(--font-mono);
            font-size: 1.05rem;
            color: var(--primary);
            font-weight: 700;
        }

        /* Section headings */
        .section-head {
            margin-bottom: 32px;
        }

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

        .section-head h2 {
            margin-bottom: 8px;
        }

        .section-head p {
            color: var(--text-muted);
            font-size: 1rem;
            max-width: 720px;
            line-height: 1.8;
        }

        /* Pain point cards */
        .pain-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .pain-card {
            background-color: #FFFFFF;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 24px 22px;
            transition: all var(--transition-base);
            position: relative;
        }

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

        .pain-card .pain-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background-color: rgba(14,59,46,0.08);
            color: var(--primary);
            font-size: 1.2rem;
            margin-bottom: 14px;
            flex-shrink: 0;
        }

        .pain-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
        }

        .pain-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 0;
            line-height: 1.7;
        }

        .pain-card .risk-number {
            display: inline-block;
            margin-top: 12px;
            font-family: var(--font-mono);
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--accent-orange-dark);
            background-color: rgba(242,161,4,0.1);
            padding: 4px 12px;
            border-radius: 20px;
            border: 1px solid rgba(242,161,4,0.3);
        }

        /* Solution split */
        .solution-split {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 48px;
            align-items: center;
        }

        .solution-text h2 {
            margin-bottom: 16px;
        }

        .solution-text p {
            color: var(--text-muted);
            line-height: 1.85;
            margin-bottom: 14px;
        }

        .solution-image {
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-light);
            min-height: 280px;
            background-color: var(--bg-light);
            display: flex;
            align-items: center;
            justify-content: center;
            background-image: url('/assets/images/e0552c1965584b62.webp');
            background-size: cover;
            background-position: center;
        }

        .solution-image img {
            width: 100%;
            height: auto;
        }

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

        .step-card {
            background-color: #FFFFFF;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 22px 18px;
            transition: all var(--transition-base);
            text-align: center;
        }

        .step-card:hover {
            border-color: var(--border-lime);
            box-shadow: var(--shadow-sm);
        }

        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background-color: var(--primary);
            color: var(--accent-lime);
            font-family: var(--font-mono);
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 14px;
            border: 2px solid var(--accent-lime);
        }

        .step-card h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
        }

        .step-card p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 0;
            line-height: 1.65;
        }

        /* Safety & compliance */
        .safety-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 36px;
            align-items: start;
        }

        .safety-text h2 {
            color: #FFFFFF;
            margin-bottom: 16px;
        }

        .safety-text p {
            color: var(--text-light-muted);
            line-height: 1.85;
            margin-bottom: 12px;
        }

        .compliance-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 16px;
        }

        .compliance-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 18px;
            background-color: rgba(255,255,255,0.08);
            border: 1px solid rgba(200,241,105,0.3);
            border-radius: var(--radius-sm);
            color: var(--text-light);
            font-size: 0.83rem;
            font-weight: 500;
            letter-spacing: 0.02em;
        }

        .compliance-badge .badge-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background-color: var(--accent-lime);
            flex-shrink: 0;
        }

        .boundary-box {
            background-color: rgba(255,255,255,0.06);
            border: 1px solid rgba(255,255,255,0.15);
            border-radius: var(--radius-md);
            padding: 24px;
        }

        .boundary-box h3 {
            color: var(--accent-lime);
            font-size: 1.05rem;
            margin-bottom: 12px;
        }

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

        .boundary-box ul li {
            padding: 8px 0 8px 24px;
            position: relative;
            color: var(--text-light-muted);
            font-size: 0.9rem;
            line-height: 1.65;
        }

        .boundary-box ul li::before {
            content: '';
            position: absolute;
            left: 6px;
            top: 15px;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background-color: var(--accent-lime);
        }

        /* Results / data comparison */
        .results-compare {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 20px;
        }

        .compare-card {
            background-color: #FFFFFF;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 22px 20px;
            text-align: center;
            transition: all var(--transition-base);
        }

        .compare-card:hover {
            border-color: var(--border-lime);
            box-shadow: var(--shadow-sm);
        }

        .compare-card .compare-big-num {
            font-family: var(--font-mono);
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.02em;
            margin-bottom: 8px;
        }

        .compare-card .compare-big-num.orange {
            color: var(--accent-orange-dark);
        }

        .compare-card .compare-label {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

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

        .kpi-card {
            background-color: rgba(255,255,255,0.06);
            border: 1px solid rgba(255,255,255,0.12);
            border-radius: var(--radius-md);
            padding: 22px 18px;
            text-align: center;
            transition: all var(--transition-base);
            border-left: 3px solid var(--accent-lime);
        }

        .kpi-card:hover {
            background-color: rgba(255,255,255,0.1);
        }

        .kpi-card .kpi-number {
            font-family: var(--font-mono);
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--accent-lime);
            letter-spacing: -0.02em;
            margin-bottom: 6px;
        }

        .kpi-card .kpi-label {
            font-size: 0.82rem;
            color: var(--text-light-muted);
            letter-spacing: 0.03em;
        }

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

        .audience-card {
            background-color: #FFFFFF;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 24px 18px;
            transition: all var(--transition-base);
        }

        .audience-card:hover {
            border-color: var(--border-lime);
            box-shadow: var(--shadow-sm);
            transform: translateY(-2px);
        }

        .audience-card .audience-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background-color: rgba(242,161,4,0.12);
            color: var(--accent-orange-dark);
            font-size: 1.05rem;
            margin-bottom: 12px;
        }

        .audience-card h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
        }

        .audience-card p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 0;
            line-height: 1.7;
        }

        /* Brand intro */
        .brand-block {
            display: grid;
            grid-template-columns: 1fr;
            gap: 0;
            background-color: var(--bg-light);
            border-radius: var(--radius-lg);
            padding: 40px 36px;
            border: 1px solid var(--border-light);
        }

        .brand-block h2 {
            margin-bottom: 16px;
        }

        .brand-block p {
            color: var(--text-muted);
            line-height: 1.9;
            margin-bottom: 14px;
            max-width: 900px;
        }

        .brand-highlights {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 8px;
        }

        .brand-highlight-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            background-color: #FFFFFF;
            border: 1px solid var(--border-light);
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 500;
            color: var(--primary);
        }

        /* Comparison table */
        .compare-table-wrap {
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            background-color: #FFFFFF;
        }

        .compare-table {
            width: 100%;
            min-width: 680px;
            border-collapse: collapse;
            font-size: 0.9rem;
        }

        .compare-table thead th {
            background-color: var(--primary);
            color: #FFFFFF;
            font-weight: 600;
            padding: 14px 16px;
            text-align: left;
            font-size: 0.85rem;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .compare-table tbody td {
            padding: 14px 16px;
            border-bottom: 1px solid var(--border-light);
            color: var(--text-main);
            line-height: 1.6;
            vertical-align: top;
        }

        .compare-table tbody tr:last-child td {
            border-bottom: none;
        }

        .compare-table tbody tr:hover td {
            background-color: rgba(200,241,105,0.15);
        }

        .compare-table .mono-cell {
            font-family: var(--font-mono);
            font-weight: 600;
            color: var(--primary);
        }

        .compare-table .check-mark {
            color: var(--primary);
            font-weight: 700;
        }

        .compare-table .cross-mark {
            color: #C0C8C0;
        }

        .compare-table .highlight-cell {
            color: var(--accent-orange-dark);
            font-weight: 700;
        }

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

        .testimonial-card {
            background-color: #FFFFFF;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 28px 22px;
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .testimonial-card:hover {
            border-color: var(--border-lime);
            box-shadow: var(--shadow-sm);
        }

        .testimonial-card blockquote {
            margin: 0;
            font-size: 0.92rem;
            line-height: 1.75;
            color: var(--text-main);
            flex: 1;
        }

        .testimonial-user {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .testimonial-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background-color: rgba(14,59,46,0.12);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1rem;
            flex-shrink: 0;
        }

        .testimonial-user-info .user-name {
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--primary);
        }

        .testimonial-user-info .user-tag {
            font-size: 0.75rem;
            color: var(--text-muted);
        }

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

        .news-card {
            background-color: #FFFFFF;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }

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

        .news-card .news-image {
            aspect-ratio: 16/9;
            background-color: var(--bg-light);
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
        }

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

        .news-card .news-body {
            padding: 18px 16px;
            display: flex;
            flex-direction: column;
            gap: 8px;
            flex: 1;
        }

        .news-card .news-date {
            font-family: var(--font-mono);
            font-size: 0.75rem;
            color: var(--text-muted);
            letter-spacing: 0.03em;
        }

        .news-card h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 0;
            line-height: 1.5;
        }

        .news-card p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 0;
            line-height: 1.65;
        }

        .news-card .news-link {
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        .news-card .news-link:hover {
            color: var(--accent-orange);
        }

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

        .scenario-card {
            background-color: #FFFFFF;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }

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

        .scenario-card .scenario-image {
            aspect-ratio: 4/3;
            background-color: var(--bg-light);
            overflow: hidden;
            display: flex;
            align-items: center;
            justify-content: center;
        }

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

        .scenario-card .scenario-body {
            padding: 18px 16px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .scenario-card h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 0;
        }

        .scenario-card p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 0;
            line-height: 1.65;
        }

        /* FAQ */
        .faq-wrap {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            background-color: #FFFFFF;
            overflow: hidden;
            transition: all var(--transition-base);
        }

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

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 20px;
            cursor: pointer;
            font-weight: 700;
            color: var(--primary);
            font-size: 0.95rem;
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            transition: background-color var(--transition-fast);
            gap: 12px;
        }

        .faq-question:hover {
            background-color: rgba(14,59,46,0.04);
        }

        .faq-question .faq-toggle {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background-color: rgba(14,59,46,0.08);
            color: var(--primary);
            font-size: 1.2rem;
            font-weight: 600;
            flex-shrink: 0;
            transition: transform var(--transition-base);
        }

        .faq-item.open .faq-toggle {
            transform: rotate(45deg);
            background-color: var(--accent-lime);
        }

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

        .faq-item.open .faq-answer {
            max-height: 300px;
        }

        .faq-answer-inner {
            padding: 0 20px 18px;
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.75;
        }

        /* Final CTA */
        .cta-final {
            background-color: var(--primary);
            background-image: url('/assets/images/258bafc3bb3dc36d.webp');
            background-size: cover;
            background-position: center;
            border-radius: var(--radius-lg);
            padding: 52px 40px;
            text-align: center;
            border: 1px solid rgba(200,241,105,0.25);
            position: relative;
            overflow: hidden;
        }

        .cta-final::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(14,59,46,0.85);
            z-index: 1;
        }

        .cta-final .cta-content {
            position: relative;
            z-index: 2;
        }

        .cta-final h2 {
            color: #FFFFFF;
            margin-bottom: 12px;
        }

        .cta-final p {
            color: var(--text-light-muted);
            margin-bottom: 24px;
            font-size: 1rem;
        }

        /* Footer */
        .site-footer {
            background-color: var(--primary-dark);
            color: var(--text-light);
            padding: 56px 0 28px;
            border-top: 1px solid rgba(200,241,105,0.2);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 36px;
        }

        .footer-brand h3 {
            color: var(--accent-lime);
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .footer-brand p {
            color: var(--text-light-muted);
            font-size: 0.85rem;
            line-height: 1.75;
            margin-bottom: 0;
        }

        .footer-col h4 {
            color: #FFFFFF;
            font-size: 0.9rem;
            font-weight: 700;
            letter-spacing: 0.04em;
            margin-bottom: 14px;
            text-transform: none;
        }

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

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

        .footer-col ul li a {
            color: var(--text-light-muted);
            text-decoration: none;
            font-size: 0.85rem;
            transition: color var(--transition-fast);
        }

        .footer-col ul li a:hover {
            color: var(--accent-lime);
            text-decoration: underline;
            text-underline-offset: 3px;
        }

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

        .footer-bottom p {
            color: var(--text-light-muted);
            font-size: 0.78rem;
            margin: 0;
            line-height: 1.6;
        }

        .footer-bottom .footer-domain {
            color: var(--text-light-muted);
            font-size: 0.78rem;
            font-family: var(--font-mono);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            :root {
                --section-pad: 56px;
                --header-height: 56px;
            }

            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.6rem;
            }

            .header-nav a {
                padding: 6px 10px;
                font-size: 0.82rem;
            }
            .header-search {
                min-width: 160px;
            }

            .hero-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .hero-left h1 {
                font-size: 2.2rem;
            }

            .pain-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 14px;
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }
            .audience-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }
            .kpi-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .testimonial-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 14px;
            }
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .scenario-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .results-compare {
                grid-template-columns: repeat(3, 1fr);
                gap: 14px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-pad: 44px;
                --header-height: 54px;
            }

            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            body {
                font-size: 15px;
            }

            .desktop-nav {
                display: none !important;
            }
            .header-search {
                display: none;
            }
            .header-cta {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .mobile-nav {
                display: flex;
            }

            .hero {
                padding: 32px 0 48px;
            }
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .hero-left {
                max-width: 100%;
            }
            .hero-right {
                justify-content: flex-start;
            }
            .calc-demo-card {
                max-width: 100%;
            }

            .pain-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .solution-split {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .solution-image {
                min-height: 200px;
                order: -1;
            }
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .safety-block {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .results-compare {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .kpi-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .audience-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .testimonial-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .news-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .scenario-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .brand-block {
                padding: 28px 20px;
            }
            .cta-final {
                padding: 36px 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }
            .calc-row {
                grid-template-columns: 1fr;
                gap: 8px;
            }
            .calc-actions {
                flex-direction: column;
            }
        }

        @media (max-width: 520px) {
            :root {
                --section-pad: 36px;
                --header-height: 52px;
            }

            h1 {
                font-size: 1.55rem;
            }
            h2 {
                font-size: 1.25rem;
            }

            .hero-left h1 {
                font-size: 1.6rem;
            }
            .hero-stats {
                flex-direction: column;
                gap: 8px;
            }

            .kpi-grid {
                grid-template-columns: 1fr;
                gap: 8px;
            }
            .compliance-badge {
                font-size: 0.72rem;
                padding: 8px 12px;
            }
            .compare-table-wrap {
                border-radius: var(--radius-sm);
            }
            .cta-final h2 {
                font-size: 1.3rem;
            }
            .btn-lg {
                padding: 12px 24px;
                font-size: 0.95rem;
                min-height: 46px;
            }
        }

        @media (max-width: 400px) {
            .header-logo span.logo-text {
                font-size: 0.88rem;
            }
            .header-logo .logo-icon {
                width: 28px;
                height: 28px;
                font-size: 0.9rem;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #0E3B2E;
            --primary-dark: #09271E;
            --primary-light: #1A4D3D;
            --accent-lime: #C8F169;
            --accent-orange: #F2A104;
            --accent-orange-dark: #D98A00;
            --bg-light: #F4F6F0;
            --bg-dark: #191C1F;
            --bg-dark-2: #222725;
            --text-main: #222725;
            --text-muted: #6B756F;
            --text-light: #F4F6F0;
            --text-light-muted: rgba(244, 246, 240, 0.72);
            --border-light: #E0E5DA;
            --border-lime: #C8F169;
            --border-orange: #F2A104;
            --radius-sm: 4px;
            --radius-md: 6px;
            --radius-lg: 8px;
            --shadow-sm: 0 1px 3px rgba(14, 59, 46, 0.06);
            --shadow-md: 0 4px 12px rgba(14, 59, 46, 0.08);
            --shadow-lg: 0 8px 28px rgba(14, 59, 46, 0.12);
            --font-sans: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --font-mono: 'JetBrains Mono', 'Roboto Mono', 'Consolas', monospace;
            --transition-fast: 160ms ease;
            --transition-base: 240ms ease;
            --transition-slow: 360ms ease;
            --container-max: 1240px;
            --header-height: 60px;
            --section-pad: 72px;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-main);
            background-color: #FFFFFF;
            margin: 0;
            padding: 0;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 3px;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--accent-orange);
        }
        a:focus-visible {
            outline: 2px solid var(--accent-orange);
            outline-offset: 2px;
            border-radius: 2px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: var(--font-sans);
            font-size: 16px;
        }
        button {
            cursor: pointer;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-family: var(--font-sans);
            font-weight: 700;
            line-height: 1.35;
            color: var(--text-main);
            margin: 0 0 16px 0;
        }
        h1 {
            font-size: 2.4rem;
            font-weight: 900;
        }
        h2 {
            font-size: 1.8rem;
            font-weight: 700;
        }
        h3 {
            font-size: 1.25rem;
            font-weight: 600;
        }
        p {
            margin: 0 0 16px 0;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        .section {
            padding: var(--section-pad) 0;
        }
        .section-tight {
            padding: 48px 0;
        }
        .section-alt {
            background-color: var(--bg-light);
        }
        .section-dark {
            background-color: var(--primary);
            color: var(--text-light);
        }
        .section-dark h2,
        .section-dark h3,
        .section-dark h4 {
            color: #FFFFFF;
        }
        .section-dark p {
            color: var(--text-light-muted);
        }
        .text-mono {
            font-family: var(--font-mono);
            font-variant-numeric: tabular-nums;
            letter-spacing: -0.01em;
        }
        .text-center {
            text-align: center;
        }
        .text-right {
            text-align: right;
        }
        .label-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            color: var(--primary);
            background-color: rgba(200, 241, 105, 0.28);
            padding: 5px 14px;
            border-radius: 20px;
            border: 1px solid rgba(200, 241, 105, 0.6);
            margin-bottom: 14px;
        }
        .label-tag--orange {
            color: var(--accent-orange-dark);
            background-color: rgba(242, 161, 4, 0.12);
            border-color: rgba(242, 161, 4, 0.35);
        }
        .label-tag--dark {
            color: var(--accent-lime);
            background-color: rgba(200, 241, 105, 0.1);
            border-color: rgba(200, 241, 105, 0.3);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-family: var(--font-sans);
            font-size: 0.95rem;
            font-weight: 600;
            letter-spacing: 0.02em;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            border: 2px solid transparent;
            text-decoration: none;
            cursor: pointer;
            transition: all var(--transition-base);
            line-height: 1.4;
            min-height: 46px;
            text-align: center;
            white-space: nowrap;
        }
        .btn:focus-visible {
            outline: 3px solid var(--accent-orange);
            outline-offset: 3px;
        }
        .btn-primary {
            background-color: var(--accent-orange);
            color: var(--text-main);
            border-color: var(--accent-orange);
        }
        .btn-primary:hover {
            background-color: var(--accent-orange-dark);
            border-color: var(--accent-orange-dark);
            color: var(--text-main);
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(242, 161, 4, 0.32);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: none;
        }
        .btn-secondary {
            background-color: transparent;
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-secondary:hover {
            background-color: rgba(14, 59, 46, 0.06);
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-1px);
        }
        .btn-secondary--light {
            color: var(--text-light);
            border-color: var(--text-light-muted);
        }
        .btn-secondary--light:hover {
            background-color: rgba(244, 246, 240, 0.08);
            border-color: var(--text-light);
            color: var(--text-light);
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 0.85rem;
            min-height: 38px;
        }
        /* ============ Header ============ */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background-color: #FFFFFF;
            border-bottom: 1px solid var(--border-light);
            min-height: var(--header-height);
            display: flex;
            align-items: center;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
            height: var(--header-height);
        }
        .header-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
            color: var(--primary);
            font-weight: 900;
            font-size: 1.1rem;
            white-space: nowrap;
            letter-spacing: 0.01em;
            flex-shrink: 0;
        }
        .header-logo:hover {
            color: var(--primary);
        }
        .logo-icon {
            font-size: 1.5rem;
            line-height: 1;
        }
        .logo-text {
            display: inline-block;
        }
        .header-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
        }
        .header-nav a {
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-main);
            text-decoration: none;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }
        .header-nav a:hover {
            color: var(--primary);
            background-color: rgba(14, 59, 46, 0.05);
        }
        .header-nav a.active {
            color: var(--primary);
            font-weight: 700;
            background-color: rgba(200, 241, 105, 0.2);
        }
        .header-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 14px;
            right: 14px;
            height: 2px;
            background-color: var(--accent-lime);
            border-radius: 1px;
        }
        .header-right {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .header-search {
            display: flex;
            align-items: center;
            gap: 6px;
            background-color: var(--bg-light);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            padding: 6px 12px;
            min-width: 220px;
            transition: border-color var(--transition-fast);
        }
        .header-search:focus-within {
            border-color: var(--accent-lime);
        }
        .search-icon {
            font-size: 0.9rem;
            flex-shrink: 0;
        }
        .header-search input {
            border: none;
            background: transparent;
            outline: none;
            font-size: 0.85rem;
            color: var(--text-main);
            width: 100%;
            padding: 4px 0;
        }
        .header-search input::placeholder {
            color: var(--text-muted);
        }
        .header-cta {
            flex-shrink: 0;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 44px;
            height: 44px;
            background: transparent;
            border: none;
            padding: 8px;
            flex-shrink: 0;
        }
        .hamburger span {
            display: block;
            width: 100%;
            height: 2px;
            background-color: var(--primary);
            border-radius: 2px;
            transition: all var(--transition-base);
        }
        .hamburger[aria-expanded="true"] span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .hamburger[aria-expanded="true"] span:nth-child(2) {
            opacity: 0;
        }
        .hamburger[aria-expanded="true"] span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* ============ Category Hero / H1 Area ============ */
        .category-hero {
            background-color: var(--primary);
            color: var(--text-light);
            padding: 48px 0 52px;
            border-bottom: 3px solid var(--accent-lime);
            position: relative;
            overflow: hidden;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            top: -40px;
            right: -20px;
            width: 240px;
            height: 240px;
            border-radius: 50%;
            background: rgba(200, 241, 105, 0.08);
            pointer-events: none;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            bottom: -60px;
            left: 30%;
            width: 180px;
            height: 180px;
            border: 2px dashed rgba(200, 241, 105, 0.2);
            border-radius: 50%;
            pointer-events: none;
        }
        .category-hero .container {
            position: relative;
            z-index: 2;
        }
        .category-hero h1 {
            color: #FFFFFF;
            font-size: 2rem;
            margin-bottom: 12px;
            max-width: 800px;
        }
        .category-hero p {
            color: var(--text-light-muted);
            font-size: 1rem;
            max-width: 720px;
            margin-bottom: 0;
            line-height: 1.8;
        }
        .category-hero .label-tag--dark {
            margin-bottom: 12px;
        }

        /* ============ Section Headers ============ */
        .section-head {
            margin-bottom: 32px;
        }
        .section-head h2 {
            font-size: 1.6rem;
            margin-bottom: 8px;
        }
        .section-head p {
            color: var(--text-muted);
            font-size: 0.95rem;
            max-width: 680px;
            margin-bottom: 0;
        }
        .section-head--dark h2 {
            color: #FFFFFF;
        }
        .section-head--dark p {
            color: var(--text-light-muted);
        }

        /* ============ Stats Overview ============ */
        .stats-overview-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .stat-overview-card {
            background-color: var(--bg-light);
            border: 1px solid var(--border-light);
            border-left: 3px solid var(--accent-lime);
            border-radius: var(--radius-md);
            padding: 24px 20px;
            box-shadow: var(--shadow-sm);
        }
        .stat-overview-card .stat-number {
            font-family: var(--font-mono);
            font-size: 2rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.01em;
            margin-bottom: 4px;
        }
        .stat-overview-card .stat-label {
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        /* ============ Card Grid / List Cards ============ */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .card-grid--2 {
            grid-template-columns: repeat(2, 1fr);
        }
        .data-card {
            background-color: #FFFFFF;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }
        .data-card:hover {
            border-color: var(--accent-lime);
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .data-card:hover .data-card-title {
            color: var(--primary);
        }
        .data-card-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            display: block;
            background-color: var(--bg-light);
        }
        .data-card-body {
            padding: 18px 20px 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .data-card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 12px;
        }
        .data-card-tag {
            font-family: var(--font-mono);
            font-size: 0.72rem;
            font-weight: 500;
            padding: 3px 10px;
            border-radius: 14px;
            background-color: rgba(14, 59, 46, 0.06);
            color: var(--primary);
            white-space: nowrap;
        }
        .data-card-tag--orange {
            background-color: rgba(242, 161, 4, 0.12);
            color: var(--accent-orange-dark);
        }
        .data-card-tag--lime {
            background-color: rgba(200, 241, 105, 0.25);
            color: var(--primary);
        }
        .data-card-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 8px;
            line-height: 1.45;
            transition: color var(--transition-base);
        }
        .data-card-summary {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 12px;
        }
        .data-card-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-mono);
            font-size: 0.78rem;
            color: var(--text-muted);
            padding-top: 12px;
            border-top: 1px solid var(--border-light);
        }
        .data-card-meta span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        /* ============ Data Table ============ */
        .table-wrapper {
            overflow-x: auto;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            background-color: #FFFFFF;
        }
        .data-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.9rem;
            min-width: 720px;
        }
        .data-table thead th {
            background-color: var(--primary);
            color: #FFFFFF;
            font-weight: 600;
            padding: 14px 16px;
            text-align: left;
            white-space: nowrap;
            font-size: 0.85rem;
            letter-spacing: 0.02em;
            border-bottom: 2px solid var(--accent-lime);
        }
        .data-table tbody td {
            padding: 12px 16px;
            border-bottom: 1px solid var(--border-light);
            color: var(--text-main);
            vertical-align: middle;
        }
        .data-table tbody tr:last-child td {
            border-bottom: none;
        }
        .data-table tbody tr {
            transition: background-color var(--transition-fast);
        }
        .data-table tbody tr:hover {
            background-color: rgba(200, 241, 105, 0.15);
        }
        .data-table .mono-cell {
            font-family: var(--font-mono);
            font-size: 0.85rem;
            font-variant-numeric: tabular-nums;
        }
        .data-table .highlight-cell {
            color: var(--accent-orange-dark);
            font-weight: 600;
        }
        .table-badge {
            display: inline-block;
            padding: 2px 10px;
            border-radius: 12px;
            font-size: 0.72rem;
            font-weight: 600;
            white-space: nowrap;
        }
        .table-badge--green {
            background-color: rgba(14, 59, 46, 0.1);
            color: var(--primary);
        }
        .table-badge--orange {
            background-color: rgba(242, 161, 4, 0.15);
            color: var(--accent-orange-dark);
        }
        .table-badge--lime {
            background-color: rgba(200, 241, 105, 0.3);
            color: var(--primary);
        }

        /* ============ Featured / Recommended Cards ============ */
        .featured-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .featured-card {
            display: flex;
            background-color: #FFFFFF;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
        }
        .featured-card:hover {
            border-color: var(--accent-lime);
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .featured-card-img {
            width: 120px;
            min-height: 100%;
            object-fit: cover;
            flex-shrink: 0;
            background-color: var(--bg-light);
        }
        .featured-card-body {
            padding: 18px 16px;
            flex: 1;
        }
        .featured-card-tag {
            font-family: var(--font-mono);
            font-size: 0.7rem;
            font-weight: 500;
            color: var(--accent-orange-dark);
            background-color: rgba(242, 161, 4, 0.1);
            padding: 2px 10px;
            border-radius: 12px;
            display: inline-block;
            margin-bottom: 8px;
        }
        .featured-card-title {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .featured-card-desc {
            font-size: 0.82rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 0;
        }

        /* ============ FAQ Accordion ============ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background-color: #FFFFFF;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: border-color var(--transition-base);
        }
        .faq-item:hover {
            border-color: var(--accent-lime);
        }
        .faq-item.is-open {
            border-color: var(--accent-lime);
        }
        .faq-question {
            width: 100%;
            background: transparent;
            border: none;
            padding: 18px 22px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-main);
            text-align: left;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            cursor: pointer;
            transition: background-color var(--transition-fast);
            line-height: 1.5;
        }
        .faq-question:hover {
            background-color: rgba(14, 59, 46, 0.04);
        }
        .faq-question:focus-visible {
            outline: 2px solid var(--accent-orange);
            outline-offset: -2px;
        }
        .faq-icon {
            flex-shrink: 0;
            font-size: 1.2rem;
            font-weight: 300;
            color: var(--accent-orange);
            transition: transform var(--transition-base);
            line-height: 1;
        }
        .faq-item.is-open .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-fast);
            padding: 0 22px;
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.8;
        }
        .faq-item.is-open .faq-answer {
            max-height: 400px;
            padding: 0 22px 20px;
        }

        /* ============ Method / Guide Section ============ */
        .guide-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        .guide-item {
            display: flex;
            gap: 14px;
            background-color: #FFFFFF;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 20px 22px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
        }
        .guide-item:hover {
            border-color: var(--accent-lime);
            box-shadow: var(--shadow-md);
        }
        .guide-index {
            font-family: var(--font-mono);
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--accent-orange);
            flex-shrink: 0;
            line-height: 1.2;
        }
        .guide-content h3 {
            font-size: 1rem;
            margin-bottom: 6px;
        }
        .guide-content p {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: 0;
            line-height: 1.7;
        }

        /* ============ CTA Section ============ */
        .cta-panel {
            background-color: var(--primary);
            border-radius: var(--radius-lg);
            padding: 40px 44px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
            color: var(--text-light);
            border: 1px solid rgba(200, 241, 105, 0.2);
            position: relative;
            overflow: hidden;
        }
        .cta-panel::before {
            content: '';
            position: absolute;
            top: -50px;
            right: -30px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(200, 241, 105, 0.07);
        }
        .cta-panel-content {
            flex: 1;
            min-width: 260px;
            position: relative;
            z-index: 2;
        }
        .cta-panel-content h2 {
            color: #FFFFFF;
            font-size: 1.5rem;
            margin-bottom: 8px;
        }
        .cta-panel-content p {
            color: var(--text-light-muted);
            font-size: 0.95rem;
            margin-bottom: 0;
        }
        .cta-panel-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            position: relative;
            z-index: 2;
        }

        /* ============ Footer ============ */
        .site-footer {
            background-color: var(--primary-dark);
            color: var(--text-light-muted);
            padding: 56px 0 32px;
            border-top: 3px solid var(--accent-lime);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 40px;
        }
        .footer-brand h3 {
            color: #FFFFFF;
            font-size: 1.2rem;
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 0.85rem;
            color: var(--text-light-muted);
            line-height: 1.7;
            margin-bottom: 0;
        }
        .footer-col h4 {
            color: #FFFFFF;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 14px;
            letter-spacing: 0.03em;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            color: var(--text-light-muted);
            text-decoration: none;
            font-size: 0.88rem;
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: var(--accent-lime);
        }
        .footer-bottom {
            border-top: 1px solid rgba(244, 246, 240, 0.12);
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
        }
        .footer-bottom p {
            font-size: 0.78rem;
            color: var(--text-light-muted);
            margin-bottom: 0;
            max-width: 620px;
            line-height: 1.6;
        }
        .footer-domain {
            font-family: var(--font-mono);
            font-size: 0.78rem;
            color: var(--text-light-muted);
            white-space: nowrap;
        }

        /* ============ Responsive ============ */
        @media (max-width: 1024px) {
            :root {
                --section-pad: 56px;
                --header-height: 56px;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            .header-nav a {
                padding: 6px 10px;
                font-size: 0.85rem;
            }
            .header-search {
                min-width: 180px;
            }
            .card-grid,
            .featured-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .guide-list {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 768px) {
            :root {
                --section-pad: 44px;
                --header-height: 54px;
            }
            h1 {
                font-size: 1.7rem;
            }
            h2 {
                font-size: 1.35rem;
            }
            .desktop-nav {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .header-search {
                display: none;
            }
            .header-cta {
                display: none;
            }
            .header-inner {
                gap: 12px;
            }
            .header-logo {
                font-size: 1rem;
            }
            .mobile-nav-open .desktop-nav {
                display: flex;
                flex-direction: column;
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                background-color: #FFFFFF;
                border-bottom: 2px solid var(--accent-lime);
                box-shadow: var(--shadow-md);
                padding: 12px 20px;
                gap: 2px;
                z-index: 99;
            }
            .mobile-nav-open .desktop-nav a {
                padding: 12px 14px;
                width: 100%;
                font-size: 0.95rem;
            }
            .mobile-nav-open .desktop-nav a.active::after {
                left: 14px;
                right: auto;
                bottom: 6px;
                top: 50%;
                transform: translateY(-50%);
                width: 3px;
                height: auto;
                bottom: 6px;
                top: 10px;
                bottom: 10px;
                right: auto;
                left: 0;
            }
            .category-hero {
                padding: 36px 0 40px;
            }
            .category-hero h1 {
                font-size: 1.5rem;
            }
            .stats-overview-grid {
                grid-template-columns: 1fr;
            }
            .card-grid,
            .card-grid--2,
            .featured-grid {
                grid-template-columns: 1fr;
            }
            .featured-card {
                flex-direction: column;
            }
            .featured-card-img {
                width: 100%;
                height: 160px;
                min-height: auto;
            }
            .cta-panel {
                padding: 28px 24px;
                flex-direction: column;
                align-items: flex-start;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .data-card-img {
                height: 180px;
            }
        }
        @media (max-width: 520px) {
            :root {
                --section-pad: 36px;
                --header-height: 52px;
            }
            h1 {
                font-size: 1.4rem;
            }
            h2 {
                font-size: 1.25rem;
            }
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .header-inner {
                padding: 0 16px;
            }
            .header-logo {
                font-size: 0.9rem;
            }
            .logo-icon {
                font-size: 1.2rem;
            }
            .category-hero h1 {
                font-size: 1.3rem;
            }
            .category-hero p {
                font-size: 0.9rem;
            }
            .section-head h2 {
                font-size: 1.25rem;
            }
            .data-card-body {
                padding: 14px 16px 16px;
            }
            .stat-overview-card {
                padding: 18px 16px;
            }
            .guide-item {
                padding: 16px;
            }
            .cta-panel-content h2 {
                font-size: 1.25rem;
            }
            .btn {
                padding: 10px 20px;
                font-size: 0.88rem;
                min-height: 42px;
            }
            .faq-question {
                padding: 14px 16px;
                font-size: 0.92rem;
            }
            .faq-answer {
                padding: 0 16px;
                font-size: 0.85rem;
            }
            .faq-item.is-open .faq-answer {
                padding: 0 16px 16px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #0E3B2E;
            --primary-dark: #09271E;
            --primary-light: #1A4D3D;
            --accent-lime: #C8F169;
            --accent-orange: #F2A104;
            --accent-orange-dark: #D98A00;
            --bg-light: #F4F6F0;
            --bg-dark: #191C1F;
            --bg-dark-2: #222725;
            --text-main: #222725;
            --text-muted: #6B756F;
            --text-light: #F4F6F0;
            --text-light-muted: rgba(244,246,240,0.72);
            --border-light: #E0E5DA;
            --border-lime: #C8F169;
            --border-orange: #F2A104;
            --radius-sm: 4px;
            --radius-md: 6px;
            --radius-lg: 8px;
            --shadow-sm: 0 1px 3px rgba(14,59,46,0.06);
            --shadow-md: 0 4px 12px rgba(14,59,46,0.08);
            --shadow-lg: 0 8px 28px rgba(14,59,46,0.12);
            --font-sans: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --font-mono: 'JetBrains Mono', 'Roboto Mono', 'Consolas', monospace;
            --transition-fast: 160ms ease;
            --transition-base: 240ms ease;
            --transition-slow: 360ms ease;
            --container-max: 1240px;
            --header-height: 60px;
            --section-pad: 72px;
        }

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

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

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-main);
            background-color: #FFFFFF;
            margin: 0;
            padding: 0;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 3px;
            transition: color var(--transition-fast);
        }

        a:hover {
            color: var(--accent-orange);
        }

        a:focus-visible {
            outline: 2px solid var(--accent-orange);
            outline-offset: 2px;
            border-radius: 2px;
        }

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

        button,
        input,
        select,
        textarea {
            font-family: var(--font-sans);
            font-size: 16px;
        }

        button {
            cursor: pointer;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

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

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

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

        .section-dark {
            background-color: var(--primary);
            color: var(--text-light);
        }

        .section-dark h2,
        .section-dark h3 {
            color: #FFFFFF;
        }

        .section-dark p {
            color: var(--text-light-muted);
        }

        .text-mono {
            font-family: var(--font-mono);
            font-variant-numeric: tabular-nums;
            letter-spacing: -0.01em;
        }

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

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

        .label-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            color: var(--primary);
            background-color: rgba(200,241,105,0.28);
            padding: 5px 14px;
            border-radius: 20px;
            border: 1px solid rgba(200,241,105,0.6);
            margin-bottom: 14px;
        }

        .label-tag--orange {
            color: var(--accent-orange-dark);
            background-color: rgba(242,161,4,0.12);
            border-color: rgba(242,161,4,0.35);
        }

        .label-tag--dark {
            color: var(--accent-lime);
            background-color: rgba(200,241,105,0.1);
            border-color: rgba(200,241,105,0.3);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-family: var(--font-sans);
            font-size: 0.95rem;
            font-weight: 600;
            letter-spacing: 0.02em;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            border: 2px solid transparent;
            text-decoration: none;
            cursor: pointer;
            transition: all var(--transition-base);
            line-height: 1.4;
            min-height: 46px;
            text-align: center;
            white-space: nowrap;
        }

        .btn:focus-visible {
            outline: 3px solid var(--accent-orange);
            outline-offset: 3px;
        }

        .btn-primary {
            background-color: var(--accent-orange);
            color: var(--text-main);
            border-color: var(--accent-orange);
        }

        .btn-primary:hover {
            background-color: var(--accent-orange-dark);
            border-color: var(--accent-orange-dark);
            color: var(--text-main);
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(242,161,4,0.32);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: none;
        }

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

        .btn-secondary:hover {
            background-color: rgba(14,59,46,0.06);
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-1px);
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 0.85rem;
            min-height: 38px;
            border-radius: var(--radius-sm);
        }

        /* Header / Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background-color: #FFFFFF;
            border-bottom: 1px solid var(--border-light);
            min-height: var(--header-height);
            display: flex;
            align-items: center;
            box-shadow: var(--shadow-sm);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            width: 100%;
        }

        .header-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            text-decoration: none;
            color: var(--primary);
            font-weight: 700;
            font-size: 1.05rem;
            letter-spacing: 0.01em;
            white-space: nowrap;
        }

        .header-logo:hover {
            color: var(--primary);
            text-decoration: none;
        }

        .logo-icon {
            font-size: 1.3rem;
            line-height: 1;
        }

        .logo-text {
            font-weight: 700;
        }

        .header-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
        }

        .header-nav a {
            display: inline-flex;
            align-items: center;
            padding: 8px 12px;
            font-size: 0.88rem;
            font-weight: 500;
            color: var(--text-main);
            text-decoration: none;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

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

        .header-nav a.active {
            color: var(--primary);
            background-color: rgba(200,241,105,0.25);
            font-weight: 600;
            border-bottom: 2px solid var(--accent-lime);
            border-radius: var(--radius-sm) var(--radius-sm) 0 0;
        }

        .header-right {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .header-search {
            display: flex;
            align-items: center;
            gap: 6px;
            background-color: var(--bg-light);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            padding: 6px 12px;
            min-width: 220px;
            transition: border-color var(--transition-fast);
        }

        .header-search:focus-within {
            border-color: var(--accent-lime);
        }

        .search-icon {
            font-size: 0.9rem;
            line-height: 1;
            opacity: 0.6;
        }

        .header-search input {
            border: none;
            background: transparent;
            outline: none;
            font-size: 0.85rem;
            color: var(--text-main);
            width: 100%;
        }

        .header-search input::placeholder {
            color: var(--text-muted);
            font-size: 0.8rem;
        }

        .header-cta {
            white-space: nowrap;
        }

        .hamburger {
            display: none;
            background: none;
            border: none;
            padding: 8px;
            cursor: pointer;
            min-width: 44px;
            min-height: 44px;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            border-radius: var(--radius-sm);
            transition: background-color var(--transition-fast);
        }

        .hamburger:hover {
            background-color: var(--bg-light);
        }

        .hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background-color: var(--primary);
            border-radius: 2px;
            transition: all var(--transition-base);
        }

        .hamburger[aria-expanded="true"] span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

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

        .hamburger[aria-expanded="true"] span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* Page Title Bar (compact) */
        .page-title-bar {
            background-color: var(--primary);
            padding: 36px 0 28px;
            border-bottom: 3px solid var(--accent-lime);
        }

        .page-title-bar h1 {
            color: #FFFFFF;
            font-size: 1.7rem;
            font-weight: 700;
            margin: 0 0 10px;
            line-height: 1.4;
        }

        .page-title-bar p {
            color: var(--text-light-muted);
            font-size: 0.95rem;
            margin: 0;
            max-width: 760px;
            line-height: 1.8;
        }

        .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 0.8rem;
            color: var(--text-light-muted);
            margin-bottom: 12px;
        }

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

        .breadcrumb-nav a:hover {
            color: #FFFFFF;
        }

        .breadcrumb-nav .separator {
            opacity: 0.5;
        }

        /* Section Titles */
        .section-title {
            font-size: 1.45rem;
            font-weight: 700;
            color: var(--primary);
            margin: 0 0 12px;
            line-height: 1.4;
        }

        .section-subtitle {
            font-size: 0.95rem;
            color: var(--text-muted);
            margin: 0 0 32px;
            max-width: 680px;
            line-height: 1.8;
        }

        /* Stat Cards */
        .stat-row {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
        }

        .stat-card {
            background: #FFFFFF;
            border: 1px solid var(--border-light);
            border-left: 3px solid var(--accent-lime);
            border-radius: var(--radius-sm);
            padding: 24px 20px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
        }

        .stat-card:hover {
            box-shadow: var(--shadow-md);
            border-left-color: var(--accent-orange);
            transform: translateY(-2px);
        }

        .stat-card .stat-number {
            font-family: var(--font-mono);
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 6px;
        }

        .stat-card .stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* Card Grid */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 20px;
        }

        .info-card {
            background: #FFFFFF;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }

        .info-card:hover {
            border-color: var(--accent-lime);
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }

        .info-card .card-image {
            aspect-ratio: 16/9;
            overflow: hidden;
            background-color: var(--bg-light);
            position: relative;
        }

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

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

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

        .info-card .card-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--primary);
            margin: 0 0 8px;
            line-height: 1.45;
            transition: color var(--transition-fast);
        }

        .info-card:hover .card-title {
            color: var(--accent-orange-dark);
        }

        .info-card .card-summary {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0 0 12px;
        }

        .info-card .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
            margin-top: auto;
            padding-top: 10px;
            border-top: 1px solid var(--border-light);
        }

        .meta-tag {
            font-family: var(--font-mono);
            font-size: 0.75rem;
            color: var(--primary);
            background-color: rgba(200,241,105,0.25);
            padding: 3px 10px;
            border-radius: 12px;
            font-weight: 500;
        }

        .meta-tag--orange {
            color: var(--accent-orange-dark);
            background-color: rgba(242,161,4,0.12);
        }

        .meta-date {
            font-size: 0.78rem;
            color: var(--text-muted);
            font-family: var(--font-mono);
        }

        /* Data Table */
        .table-wrap {
            overflow-x: auto;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
        }

        .data-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.9rem;
            min-width: 640px;
        }

        .data-table thead {
            background-color: var(--primary);
        }

        .data-table thead th {
            color: #FFFFFF;
            font-weight: 600;
            padding: 14px 16px;
            text-align: left;
            font-size: 0.85rem;
            letter-spacing: 0.03em;
            border-bottom: 2px solid var(--accent-lime);
        }

        .data-table tbody td {
            padding: 12px 16px;
            border-bottom: 1px solid var(--border-light);
            color: var(--text-main);
            font-size: 0.88rem;
        }

        .data-table tbody tr {
            transition: background-color var(--transition-fast);
        }

        .data-table tbody tr:hover {
            background-color: rgba(200,241,105,0.15);
        }

        .data-table .mono-cell {
            font-family: var(--font-mono);
            font-variant-numeric: tabular-nums;
            font-size: 0.85rem;
            letter-spacing: -0.01em;
        }

        /* Featured / Hot Cards */
        .featured-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 20px;
        }

        .featured-card {
            background: #FFFFFF;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 22px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
            display: flex;
            gap: 16px;
            align-items: flex-start;
        }

        .featured-card:hover {
            border-color: var(--accent-lime);
            box-shadow: var(--shadow-md);
        }

        .featured-card .fc-image {
            width: 96px;
            height: 96px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            flex-shrink: 0;
            background-color: var(--bg-light);
        }

        .featured-card .fc-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

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

        .featured-card .fc-title {
            font-size: 1rem;
            font-weight: 700;
            color: var(--primary);
            margin: 0 0 6px;
            line-height: 1.45;
        }

        .featured-card .fc-desc {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0;
        }

        /* FAQ Accordion */
        .accordion-wrap {
            max-width: 820px;
            margin: 0 auto;
        }

        .accordion-item {
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            margin-bottom: 10px;
            background: #FFFFFF;
            overflow: hidden;
            transition: all var(--transition-base);
        }

        .accordion-item:hover {
            border-color: var(--border-lime);
        }

        .accordion-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 16px 18px;
            cursor: pointer;
            font-weight: 600;
            color: var(--primary);
            font-size: 0.95rem;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: background-color var(--transition-fast);
            min-height: 44px;
        }

        .accordion-header:hover {
            background-color: var(--bg-light);
        }

        .accordion-header .accordion-icon {
            font-size: 1.1rem;
            color: var(--accent-orange);
            flex-shrink: 0;
            transition: transform var(--transition-base);
            font-weight: 700;
        }

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

        .accordion-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow);
        }

        .accordion-content-inner {
            padding: 0 18px 18px;
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.8;
        }

        .accordion-item.open .accordion-content {
            max-height: 400px;
        }

        /* Method / Guide Section */
        .method-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 20px;
        }

        .method-card {
            background: #FFFFFF;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 22px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
        }

        .method-card:hover {
            border-color: var(--accent-lime);
            box-shadow: var(--shadow-md);
        }

        .method-step {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background-color: var(--primary);
            color: var(--accent-lime);
            font-family: var(--font-mono);
            font-weight: 700;
            font-size: 0.9rem;
            border-radius: 50%;
            margin-bottom: 12px;
        }

        .method-card h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--primary);
            margin: 0 0 8px;
            line-height: 1.4;
        }

        .method-card p {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.7;
        }

        /* CTA Section */
        .cta-section {
            background-color: var(--primary);
            padding: 56px 0;
            border-top: 3px solid var(--accent-lime);
        }

        .cta-section h2 {
            color: #FFFFFF;
            font-size: 1.5rem;
            font-weight: 700;
            margin: 0 0 12px;
        }

        .cta-section p {
            color: var(--text-light-muted);
            font-size: 0.95rem;
            margin: 0 0 24px;
            max-width: 560px;
        }

        .cta-section .btn {
            font-size: 1rem;
            padding: 14px 32px;
        }

        /* Footer */
        .site-footer {
            background-color: var(--primary-dark);
            color: var(--text-light);
            padding: 48px 0 24px;
            border-top: 1px solid rgba(200,241,105,0.2);
        }

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

        .footer-brand h3 {
            color: #FFFFFF;
            font-size: 1.05rem;
            font-weight: 700;
            margin: 0 0 12px;
        }

        .footer-brand p {
            color: var(--text-light-muted);
            font-size: 0.85rem;
            line-height: 1.75;
            margin: 0;
        }

        .footer-col h4 {
            color: var(--accent-lime);
            font-size: 0.85rem;
            font-weight: 600;
            margin: 0 0 12px;
            letter-spacing: 0.04em;
            text-transform: uppercase;
        }

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

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

        .footer-col ul li a {
            color: var(--text-light-muted);
            font-size: 0.85rem;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        .footer-col ul li a:hover {
            color: var(--accent-lime);
        }

        .footer-bottom {
            border-top: 1px solid rgba(244,246,240,0.15);
            padding-top: 16px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
        }

        .footer-bottom p {
            color: var(--text-light-muted);
            font-size: 0.78rem;
            margin: 0;
            line-height: 1.7;
        }

        .footer-domain {
            font-family: var(--font-mono);
            font-size: 0.78rem;
            color: var(--text-light-muted);
            white-space: nowrap;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            :root {
                --section-pad: 56px;
                --header-height: 56px;
            }

            .header-search {
                min-width: 160px;
            }

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

        @media (max-width: 768px) {
            :root {
                --section-pad: 44px;
                --header-height: 56px;
            }

            .desktop-nav {
                display: none !important;
            }

            .hamburger {
                display: flex;
            }

            .header-search {
                min-width: 0;
                flex: 1;
            }

            .header-cta {
                display: none;
            }

            .header-inner {
                gap: 10px;
            }

            .header-logo .logo-text {
                font-size: 0.95rem;
            }

            /* Mobile drawer */
            .mobile-nav {
                display: none;
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                background-color: #FFFFFF;
                border-bottom: 1px solid var(--border-light);
                box-shadow: var(--shadow-md);
                padding: 12px 20px;
                flex-direction: column;
                gap: 4px;
                z-index: 99;
            }

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

            .mobile-nav a {
                display: block;
                padding: 10px 12px;
                font-size: 0.9rem;
                font-weight: 500;
                color: var(--text-main);
                text-decoration: none;
                border-radius: var(--radius-sm);
                transition: all var(--transition-fast);
            }

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

            .mobile-nav a.active {
                background-color: rgba(200,241,105,0.25);
                color: var(--primary);
                font-weight: 600;
            }

            .page-title-bar h1 {
                font-size: 1.35rem;
            }

            .section-title {
                font-size: 1.25rem;
            }

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

            .stat-card .stat-number {
                font-size: 1.7rem;
            }

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

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

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

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

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

        @media (max-width: 520px) {
            :root {
                --section-pad: 36px;
                --header-height: 52px;
            }

            .header-logo .logo-text {
                font-size: 0.85rem;
            }

            .logo-icon {
                font-size: 1.1rem;
            }

            .header-search input::placeholder {
                font-size: 0.7rem;
            }

            .page-title-bar {
                padding: 24px 0 20px;
            }

            .page-title-bar h1 {
                font-size: 1.15rem;
            }

            .page-title-bar p {
                font-size: 0.85rem;
            }

            .section-title {
                font-size: 1.1rem;
            }

            .stat-row {
                grid-template-columns: 1fr;
            }

            .btn {
                font-size: 0.9rem;
                padding: 10px 20px;
                min-height: 42px;
            }

            .featured-card {
                flex-direction: column;
                gap: 12px;
            }

            .featured-card .fc-image {
                width: 100%;
                height: 140px;
            }

            .data-table {
                font-size: 0.8rem;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #0E3B2E;
            --primary-dark: #09271E;
            --primary-light: #1A4D3D;
            --accent-lime: #C8F169;
            --accent-orange: #F2A104;
            --accent-orange-dark: #D98A00;
            --bg-light: #F4F6F0;
            --bg-dark: #191C1F;
            --bg-dark-2: #222725;
            --text-main: #222725;
            --text-muted: #6B756F;
            --text-light: #F4F6F0;
            --text-light-muted: rgba(244,246,240,0.72);
            --border-light: #E0E5DA;
            --border-lime: #C8F169;
            --border-orange: #F2A104;
            --radius-sm: 4px;
            --radius-md: 6px;
            --radius-lg: 8px;
            --shadow-sm: 0 1px 3px rgba(14,59,46,0.06);
            --shadow-md: 0 4px 12px rgba(14,59,46,0.08);
            --shadow-lg: 0 8px 28px rgba(14,59,46,0.12);
            --font-sans: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --font-mono: 'JetBrains Mono', 'Roboto Mono', 'Consolas', monospace;
            --transition-fast: 160ms ease;
            --transition-base: 240ms ease;
            --transition-slow: 360ms ease;
            --container-max: 1240px;
            --header-height: 60px;
            --section-pad: 72px;
        }
        @media (max-width: 1024px) {
            :root {
                --section-pad: 56px;
                --header-height: 56px;
            }
        }
        @media (max-width: 768px) {
            :root {
                --section-pad: 44px;
                --header-height: 54px;
            }
        }
        @media (max-width: 520px) {
            :root {
                --section-pad: 36px;
                --header-height: 52px;
            }
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-main);
            background-color: #FFFFFF;
            margin: 0;
            padding: 0;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-top: var(--header-height);
        }
        a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 3px;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--accent-orange);
        }
        a:focus-visible {
            outline: 2px solid var(--accent-orange);
            outline-offset: 2px;
            border-radius: 2px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, input, select, textarea {
            font-family: var(--font-sans);
            font-size: 16px;
        }
        button {
            cursor: pointer;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        .section {
            padding: var(--section-pad) 0;
        }
        .section-tight {
            padding: 48px 0;
        }
        .section-alt {
            background-color: var(--bg-light);
        }
        .section-dark {
            background-color: var(--primary);
            color: var(--text-light);
        }
        .section-dark h2,
        .section-dark h3 {
            color: #FFFFFF;
        }
        .section-dark p {
            color: var(--text-light-muted);
        }
        .text-mono {
            font-family: var(--font-mono);
            font-variant-numeric: tabular-nums;
            letter-spacing: -0.01em;
        }
        .text-center {
            text-align: center;
        }
        .text-right {
            text-align: right;
        }
        .label-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            color: var(--primary);
            background-color: rgba(200,241,105,0.28);
            padding: 5px 14px;
            border-radius: 20px;
            border: 1px solid rgba(200,241,105,0.6);
            margin-bottom: 14px;
        }
        .label-tag--orange {
            color: var(--accent-orange-dark);
            background-color: rgba(242,161,4,0.12);
            border-color: rgba(242,161,4,0.35);
        }
        .label-tag--dark {
            color: var(--accent-lime);
            background-color: rgba(200,241,105,0.1);
            border-color: rgba(200,241,105,0.3);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-family: var(--font-sans);
            font-size: 0.95rem;
            font-weight: 600;
            letter-spacing: 0.02em;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            border: 2px solid transparent;
            text-decoration: none;
            cursor: pointer;
            transition: all var(--transition-base);
            line-height: 1.4;
            min-height: 46px;
            text-align: center;
            white-space: nowrap;
        }
        .btn:focus-visible {
            outline: 3px solid var(--accent-orange);
            outline-offset: 3px;
        }
        .btn-primary {
            background-color: var(--accent-orange);
            color: var(--text-main);
            border-color: var(--accent-orange);
        }
        .btn-primary:hover {
            background-color: var(--accent-orange-dark);
            border-color: var(--accent-orange-dark);
            color: var(--text-main);
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(242,161,4,0.32);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: none;
        }
        .btn-outline {
            background-color: transparent;
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-outline:hover {
            background-color: rgba(14,59,46,0.08);
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-1px);
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 0.85rem;
            min-height: 38px;
        }
        /* Header */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background-color: #FFFFFF;
            border-bottom: 2px solid var(--border-light);
            height: var(--header-height);
            display: flex;
            align-items: center;
            box-shadow: var(--shadow-sm);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
            gap: 24px;
        }
        .header-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
            color: var(--primary);
            font-weight: 700;
            font-size: 1.15rem;
            letter-spacing: 0.01em;
            flex-shrink: 0;
        }
        .header-logo:hover {
            color: var(--primary-light);
        }
        .logo-icon {
            font-size: 1.5rem;
            line-height: 1;
        }
        .logo-text {
            white-space: nowrap;
        }
        .header-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: nowrap;
        }
        .header-nav a {
            text-decoration: none;
            color: var(--text-main);
            font-size: 0.88rem;
            font-weight: 500;
            padding: 8px 12px;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }
        .header-nav a:hover {
            color: var(--primary);
            background-color: rgba(200,241,105,0.2);
        }
        .header-nav a.active {
            color: var(--primary);
            font-weight: 700;
            background-color: rgba(200,241,105,0.28);
        }
        .header-nav a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background-color: var(--accent-orange);
            border-radius: 2px;
        }
        .header-right {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-shrink: 0;
        }
        .header-search {
            display: flex;
            align-items: center;
            gap: 8px;
            background-color: var(--bg-light);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            padding: 6px 12px;
            transition: border-color var(--transition-fast);
        }
        .header-search:focus-within {
            border-color: var(--accent-lime);
        }
        .search-icon {
            font-size: 0.9rem;
            color: var(--text-muted);
        }
        .header-search input {
            border: none;
            background: transparent;
            font-size: 0.82rem;
            color: var(--text-main);
            outline: none;
            width: 180px;
            padding: 4px 0;
        }
        .header-search input::placeholder {
            color: var(--text-muted);
        }
        .header-cta {
            flex-shrink: 0;
            white-space: nowrap;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: transparent;
            border: 2px solid var(--primary);
            border-radius: var(--radius-sm);
            padding: 8px 10px;
            cursor: pointer;
            transition: all var(--transition-fast);
        }
        .hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background-color: var(--primary);
            border-radius: 2px;
            transition: all var(--transition-base);
        }
        .hamburger:hover {
            border-color: var(--accent-orange);
        }
        .hamburger:hover span {
            background-color: var(--accent-orange);
        }
        /* Category Hero */
        .category-hero {
            background-color: var(--primary);
            color: var(--text-light);
            padding: 48px 0 40px;
            border-bottom: 3px solid var(--accent-lime);
        }
        .category-hero h1 {
            font-size: 2rem;
            font-weight: 700;
            margin: 0 0 14px;
            color: #FFFFFF;
            letter-spacing: -0.01em;
        }
        .category-hero .hero-desc {
            font-size: 0.98rem;
            color: var(--text-light-muted);
            max-width: 820px;
            margin: 0;
            line-height: 1.85;
        }
        /* Section headers */
        .section-header {
            margin-bottom: 36px;
        }
        .section-header h2 {
            font-size: 1.6rem;
            font-weight: 700;
            margin: 0 0 10px;
            color: var(--text-main);
            letter-spacing: -0.01em;
            line-height: 1.4;
        }
        .section-header .section-sub {
            font-size: 0.95rem;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.7;
        }
        /* Stats cards */
        .stats-row {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            justify-content: space-between;
        }
        .stat-card {
            flex: 1 1 0;
            min-width: 140px;
            background: var(--bg-light);
            border-left: 3px solid var(--accent-lime);
            padding: 24px 20px;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            transition: transform var(--transition-base), box-shadow var(--transition-base);
        }
        .stat-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        .stat-number {
            font-family: var(--font-mono);
            font-size: 1.75rem;
            font-weight: 600;
            color: var(--primary);
            letter-spacing: -0.02em;
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .stat-label {
            font-size: 0.82rem;
            color: var(--text-muted);
            font-weight: 500;
        }
        /* Cards grid */
        .cards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .match-card {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }
        .match-card:hover {
            border-color: var(--accent-lime);
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .match-card:hover .match-card-title {
            color: var(--primary);
        }
        .match-card-img {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background-color: #e9ece4;
            position: relative;
        }
        .match-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .match-card:hover .match-card-img img {
            transform: scale(1.04);
        }
        .match-card-body {
            padding: 20px 20px 18px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .match-card-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-main);
            margin: 0 0 10px;
            letter-spacing: -0.01em;
            line-height: 1.45;
            transition: color var(--transition-fast);
        }
        .match-card-summary {
            font-size: 0.87rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0 0 16px;
            flex: 1;
        }
        .match-card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 10px;
            font-size: 0.78rem;
            color: var(--text-muted);
            padding-top: 12px;
            border-top: 1px solid var(--border-light);
        }
        .match-card-meta .odds {
            font-family: var(--font-mono);
            color: var(--accent-orange-dark);
            font-weight: 600;
            font-size: 0.85rem;
        }
        .match-card-meta .date {
            white-space: nowrap;
        }
        /* Data table */
        .data-table-wrapper {
            overflow-x: auto;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
        }
        .data-table {
            width: 100%;
            min-width: 720px;
            border-collapse: collapse;
            background: #fff;
        }
        .data-table thead th {
            background-color: var(--primary);
            color: #fff;
            font-size: 0.82rem;
            font-weight: 600;
            text-align: left;
            padding: 14px 18px;
            white-space: nowrap;
            letter-spacing: 0.02em;
        }
        .data-table tbody td {
            font-size: 0.87rem;
            padding: 13px 18px;
            border-bottom: 1px solid var(--border-light);
            color: var(--text-main);
            white-space: nowrap;
        }
        .data-table tbody tr {
            transition: background-color var(--transition-fast);
        }
        .data-table tbody tr:hover {
            background-color: rgba(200,241,105,0.15);
        }
        .data-table .num {
            font-family: var(--font-mono);
            font-variant-numeric: tabular-nums;
        }
        /* Hot cards horizontal */
        .hot-card {
            display: flex;
            gap: 20px;
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 20px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
            align-items: center;
        }
        .hot-card:hover {
            border-color: var(--accent-lime);
            box-shadow: var(--shadow-md);
        }
        .hot-card-img {
            flex-shrink: 0;
            width: 200px;
            aspect-ratio: 16 / 10;
            border-radius: var(--radius-sm);
            overflow: hidden;
            background-color: #e9ece4;
        }
        .hot-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .hot-card-content {
            flex: 1;
        }
        .hot-card-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-main);
            margin: 0 0 8px;
            line-height: 1.4;
        }
        .hot-card-desc {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0 0 10px;
        }
        .hot-card-badges {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }
        .badge {
            display: inline-block;
            font-family: var(--font-mono);
            font-size: 0.72rem;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 12px;
            background-color: rgba(200,241,105,0.2);
            color: var(--primary);
            border: 1px solid rgba(200,241,105,0.5);
            letter-spacing: 0.03em;
        }
        .badge--orange {
            background-color: rgba(242,161,4,0.12);
            color: var(--accent-orange-dark);
            border-color: rgba(242,161,4,0.35);
        }
        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-fast);
        }
        .faq-item:hover {
            border-color: var(--accent-lime);
        }
        .faq-item summary {
            padding: 18px 22px;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-main);
            cursor: pointer;
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            user-select: none;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::after {
            content: '+';
            font-size: 1.3rem;
            font-weight: 400;
            color: var(--primary);
            line-height: 1;
            transition: transform var(--transition-base);
            flex-shrink: 0;
        }
        .faq-item[open] summary::after {
            content: '−';
            color: var(--accent-orange);
        }
        .faq-item .faq-answer {
            padding: 0 22px 20px;
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.8;
            border-top: 1px solid var(--border-light);
            padding-top: 16px;
            margin: 0 22px 20px;
            padding-left: 0;
            padding-right: 0;
        }
        /* Guide cards */
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .guide-card {
            background: var(--bg-light);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
        }
        .guide-card:hover {
            border-color: var(--accent-lime);
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .guide-number {
            font-family: var(--font-mono);
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--accent-orange);
            display: block;
            margin-bottom: 10px;
        }
        .guide-card h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-main);
            margin: 0 0 10px;
            line-height: 1.4;
        }
        .guide-card p {
            font-size: 0.87rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0;
        }
        /* CTA section */
        .cta-section {
            background-color: var(--primary);
            color: var(--text-light);
            padding: 56px 0;
            border-top: 3px solid var(--accent-lime);
        }
        .cta-section .cta-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 28px;
            flex-wrap: wrap;
        }
        .cta-section h2 {
            color: #FFFFFF;
            font-size: 1.5rem;
            font-weight: 700;
            margin: 0 0 8px;
        }
        .cta-section p {
            color: var(--text-light-muted);
            margin: 0;
            font-size: 0.92rem;
        }
        /* Footer */
        .site-footer {
            background-color: var(--primary-dark);
            color: var(--text-light-muted);
            padding: 56px 0 28px;
            border-top: 3px solid var(--accent-lime);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 40px;
        }
        .footer-brand h3 {
            color: #FFFFFF;
            font-size: 1.15rem;
            font-weight: 700;
            margin: 0 0 14px;
        }
        .footer-brand p {
            font-size: 0.85rem;
            line-height: 1.7;
            color: var(--text-light-muted);
            margin: 0;
        }
        .footer-col h4 {
            color: var(--accent-lime);
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            margin: 0 0 14px;
            text-transform: uppercase;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            color: var(--text-light-muted);
            text-decoration: none;
            font-size: 0.85rem;
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: var(--accent-lime);
        }
        .footer-bottom {
            border-top: 1px solid rgba(200,241,105,0.2);
            padding-top: 22px;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-bottom p {
            font-size: 0.78rem;
            color: var(--text-light-muted);
            line-height: 1.7;
            margin: 0;
        }
        .footer-domain {
            font-family: var(--font-mono);
            font-size: 0.78rem;
            color: rgba(200,241,105,0.6);
        }
        /* Responsive */
        @media (max-width: 1024px) {
            .cards-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .guide-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .header-search input {
                width: 130px;
            }
        }
        @media (max-width: 768px) {
            body {
                padding-top: var(--header-height);
            }
            .header-inner {
                gap: 12px;
            }
            .desktop-nav {
                display: none;
            }
            .header-search {
                display: none;
            }
            .header-cta {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .category-hero h1 {
                font-size: 1.55rem;
            }
            .cards-grid {
                grid-template-columns: 1fr;
            }
            .guide-grid {
                grid-template-columns: 1fr;
            }
            .stats-row {
                gap: 12px;
            }
            .stat-card {
                min-width: 120px;
                padding: 18px 16px;
            }
            .stat-number {
                font-size: 1.4rem;
            }
            .hot-card {
                flex-direction: column;
                align-items: stretch;
            }
            .hot-card-img {
                width: 100%;
                aspect-ratio: 16 / 9;
            }
            .cta-section .cta-inner {
                flex-direction: column;
                align-items: flex-start;
            }
        }
        @media (max-width: 520px) {
            .category-hero {
                padding: 36px 0 30px;
            }
            .category-hero h1 {
                font-size: 1.3rem;
            }
            .stats-row {
                flex-direction: column;
                gap: 10px;
            }
            .stat-card {
                min-width: auto;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .btn {
                width: 100%;
                justify-content: center;
            }
            .btn-sm {
                width: auto;
            }
            .data-table-wrapper {
                border-radius: var(--radius-sm);
            }
        }
        /* Mobile nav active state */
        .mobile-nav-panel {
            display: none;
            position: fixed;
            top: var(--header-height);
            left: 0;
            width: 100%;
            background: #fff;
            border-bottom: 2px solid var(--border-light);
            box-shadow: var(--shadow-lg);
            z-index: 999;
            padding: 16px 20px;
        }
        .mobile-nav-panel.open {
            display: block;
        }
        .mobile-nav-panel a {
            display: block;
            padding: 12px 14px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-main);
            text-decoration: none;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
        }
        .mobile-nav-panel a:hover {
            background-color: rgba(200,241,105,0.2);
            color: var(--primary);
        }
        .mobile-nav-panel a.active {
            background-color: rgba(200,241,105,0.28);
            color: var(--primary);
            font-weight: 700;
        }
        @media (min-width: 769px) {
            .mobile-nav-panel,
            .mobile-nav-panel.open {
                display: none !important;
            }
        }

/* roulang page: category4 */
:root {
            --primary: #0E3B2E;
            --primary-dark: #09271E;
            --primary-light: #1A4D3D;
            --accent-lime: #C8F169;
            --accent-orange: #F2A104;
            --accent-orange-dark: #D98A00;
            --bg-light: #F4F6F0;
            --bg-dark: #191C1F;
            --bg-dark-2: #222725;
            --text-main: #222725;
            --text-muted: #6B756F;
            --text-light: #F4F6F0;
            --text-light-muted: rgba(244,246,240,0.72);
            --border-light: #E0E5DA;
            --border-lime: #C8F169;
            --border-orange: #F2A104;
            --radius-sm: 4px;
            --radius-md: 6px;
            --radius-lg: 8px;
            --shadow-sm: 0 1px 3px rgba(14,59,46,0.06);
            --shadow-md: 0 4px 12px rgba(14,59,46,0.08);
            --shadow-lg: 0 8px 28px rgba(14,59,46,0.12);
            --font-sans: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --font-mono: 'JetBrains Mono', 'Roboto Mono', 'Consolas', monospace;
            --transition-fast: 160ms ease;
            --transition-base: 240ms ease;
            --transition-slow: 360ms ease;
            --container-max: 1240px;
            --header-height: 60px;
            --section-pad: 72px;
        }

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

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

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-main);
            background-color: #FFFFFF;
            margin: 0;
            padding: 0;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 3px;
            transition: color var(--transition-fast);
        }

        a:hover {
            color: var(--accent-orange);
        }

        a:focus-visible {
            outline: 2px solid var(--accent-orange);
            outline-offset: 2px;
            border-radius: 2px;
        }

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

        button,
        input,
        select,
        textarea {
            font-family: var(--font-sans);
            font-size: 16px;
        }

        button {
            cursor: pointer;
        }

        h1, h2, h3, h4, h5, h6 {
            font-weight: 700;
            line-height: 1.35;
            color: var(--text-main);
            margin-bottom: 16px;
        }

        h1 {
            font-size: clamp(1.75rem, 5vw, 2.5rem);
            font-weight: 900;
            letter-spacing: -0.01em;
        }

        h2 {
            font-size: clamp(1.4rem, 3.5vw, 1.75rem);
            font-weight: 700;
        }

        h3 {
            font-size: clamp(1.1rem, 2.5vw, 1.3rem);
            font-weight: 600;
        }

        p {
            margin-bottom: 16px;
            color: var(--text-main);
        }

        ul, ol {
            padding-left: 20px;
            margin-bottom: 16px;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

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

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

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

        .section-dark {
            background-color: var(--primary);
            color: var(--text-light);
        }

        .section-dark h2,
        .section-dark h3 {
            color: #FFFFFF;
        }

        .section-dark p {
            color: var(--text-light-muted);
        }

        .text-mono {
            font-family: var(--font-mono);
            font-variant-numeric: tabular-nums;
            letter-spacing: -0.01em;
        }

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

        .label-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            color: var(--primary);
            background-color: rgba(200,241,105,0.28);
            padding: 5px 14px;
            border-radius: 20px;
            border: 1px solid rgba(200,241,105,0.6);
            margin-bottom: 14px;
        }

        .label-tag--orange {
            color: var(--accent-orange-dark);
            background-color: rgba(242,161,4,0.12);
            border-color: rgba(242,161,4,0.35);
        }

        .label-tag--dark {
            color: var(--accent-lime);
            background-color: rgba(200,241,105,0.1);
            border-color: rgba(200,241,105,0.3);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-family: var(--font-sans);
            font-size: 0.95rem;
            font-weight: 600;
            letter-spacing: 0.02em;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            border: 2px solid transparent;
            text-decoration: none;
            cursor: pointer;
            transition: all var(--transition-base);
            line-height: 1.4;
            min-height: 46px;
            text-align: center;
            white-space: nowrap;
        }

        .btn:focus-visible {
            outline: 3px solid var(--accent-orange);
            outline-offset: 3px;
        }

        .btn-primary {
            background-color: var(--accent-orange);
            color: var(--text-main);
            border-color: var(--accent-orange);
        }

        .btn-primary:hover {
            background-color: var(--accent-orange-dark);
            border-color: var(--accent-orange-dark);
            color: var(--text-main);
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(242,161,4,0.32);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: none;
        }

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

        .btn-outline:hover {
            background-color: rgba(14,59,46,0.06);
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-1px);
        }

        .btn-outline-light {
            background-color: transparent;
            color: #FFFFFF;
            border-color: var(--accent-lime);
        }

        .btn-outline-light:hover {
            background-color: rgba(200,241,105,0.12);
            border-color: var(--accent-lime);
            color: var(--accent-lime);
            transform: translateY(-1px);
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 0.85rem;
            min-height: 38px;
            border-radius: 3px;
        }

        .btn-lg {
            padding: 14px 32px;
            font-size: 1rem;
            min-height: 52px;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 999;
            background-color: rgba(255,255,255,0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            height: var(--header-height);
            display: flex;
            align-items: center;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        .header-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            text-decoration: none;
            color: var(--primary);
            flex-shrink: 0;
        }

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

        .logo-icon {
            font-size: 1.4rem;
            line-height: 1;
        }

        .logo-text {
            font-size: 1.1rem;
            font-weight: 700;
            letter-spacing: -0.02em;
            white-space: nowrap;
        }

        .header-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
        }

        .header-nav a {
            display: inline-flex;
            align-items: center;
            padding: 6px 14px;
            font-size: 0.88rem;
            font-weight: 500;
            color: var(--text-main);
            text-decoration: none;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

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

        .header-nav a.active {
            color: var(--primary);
            background-color: rgba(200,241,105,0.25);
            font-weight: 600;
            border-bottom: 2px solid var(--accent-lime);
        }

        .header-right {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .header-search {
            display: flex;
            align-items: center;
            gap: 6px;
            background-color: var(--bg-light);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            padding: 6px 12px;
            transition: border-color var(--transition-fast);
        }

        .header-search:focus-within {
            border-color: var(--accent-lime);
        }

        .search-icon {
            font-size: 0.9rem;
            line-height: 1;
            opacity: 0.6;
        }

        .header-search input {
            border: none;
            background: transparent;
            font-size: 0.85rem;
            color: var(--text-main);
            width: 180px;
            outline: none;
            padding: 2px 0;
        }

        .header-search input::placeholder {
            color: var(--text-muted);
            font-size: 0.82rem;
        }

        .hamburger {
            display: none;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            gap: 4px;
            background: none;
            border: none;
            padding: 8px;
            cursor: pointer;
            border-radius: var(--radius-sm);
        }

        .hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background-color: var(--primary);
            border-radius: 2px;
            transition: all var(--transition-base);
        }

        .hamburger:hover span {
            background-color: var(--accent-orange);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: var(--header-height);
            left: 0;
            right: 0;
            background-color: #FFFFFF;
            border-bottom: 1px solid var(--border-light);
            box-shadow: var(--shadow-lg);
            z-index: 998;
            padding: 16px 20px 24px;
            flex-direction: column;
            gap: 4px;
        }

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

        .mobile-menu a {
            padding: 10px 12px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-main);
            text-decoration: none;
            border-radius: var(--radius-sm);
            transition: background-color var(--transition-fast);
        }

        .mobile-menu a:hover,
        .mobile-menu a.active {
            background-color: var(--bg-light);
        }

        .mobile-menu a.active {
            color: var(--primary);
            font-weight: 600;
            border-left: 3px solid var(--accent-lime);
        }

        .page-banner {
            background-color: var(--bg-light);
            border-bottom: 1px solid var(--border-light);
            padding: 48px 0 40px;
        }

        .page-banner-inner {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .page-banner .breadcrumb {
            font-size: 0.82rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }

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

        .page-banner .breadcrumb a:hover {
            color: var(--accent-orange);
        }

        .page-banner .breadcrumb span {
            opacity: 0.6;
        }

        .page-banner .banner-desc {
            font-size: 1rem;
            color: var(--text-muted);
            max-width: 720px;
            line-height: 1.9;
        }

        .stats-strip {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
            margin-top: 24px;
        }

        .stat-mini {
            background-color: #FFFFFF;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 18px 20px;
            text-align: center;
        }

        .stat-mini .stat-num {
            font-family: var(--font-mono);
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
        }

        .stat-mini .stat-label {
            font-size: 0.82rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

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

        .content-card {
            background-color: #FFFFFF;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }

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

        .content-card .card-cover {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            background-color: var(--bg-light);
        }

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

        .content-card .card-title {
            font-size: 1.05rem;
            font-weight: 600;
            line-height: 1.5;
            margin-bottom: 8px;
            color: var(--text-main);
            text-decoration: none;
        }

        .content-card a.card-title:hover {
            color: var(--primary);
        }

        .content-card .card-excerpt {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.75;
            margin-bottom: 14px;
            flex: 1;
        }

        .content-card .card-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.78rem;
            color: var(--text-muted);
            font-family: var(--font-mono);
            border-top: 1px solid var(--border-light);
            padding-top: 12px;
        }

        .content-card .card-meta .tag {
            display: inline-block;
            font-size: 0.72rem;
            font-weight: 600;
            color: var(--primary);
            background-color: rgba(200,241,105,0.25);
            padding: 2px 10px;
            border-radius: 12px;
            font-family: var(--font-sans);
        }

        .featured-row {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .featured-item {
            display: flex;
            gap: 16px;
            background-color: #FFFFFF;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 16px;
            transition: all var(--transition-base);
            text-decoration: none;
        }

        .featured-item:hover {
            border-color: var(--accent-lime);
            box-shadow: var(--shadow-sm);
        }

        .featured-item img {
            width: 100px;
            height: 100px;
            object-fit: cover;
            border-radius: var(--radius-sm);
            flex-shrink: 0;
            background-color: var(--bg-light);
        }

        .featured-item .featured-info {
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .featured-item .featured-title {
            font-size: 0.98rem;
            font-weight: 600;
            color: var(--text-main);
            line-height: 1.5;
            margin-bottom: 4px;
        }

        .featured-item .featured-desc {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .data-table-wrap {
            overflow-x: auto;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            background-color: #FFFFFF;
        }

        .data-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.88rem;
        }

        .data-table thead {
            background-color: var(--primary);
            color: #FFFFFF;
        }

        .data-table thead th {
            padding: 12px 16px;
            font-weight: 600;
            font-size: 0.82rem;
            text-align: left;
            letter-spacing: 0.03em;
            white-space: nowrap;
        }

        .data-table tbody td {
            padding: 12px 16px;
            border-bottom: 1px solid var(--border-light);
            color: var(--text-main);
        }

        .data-table tbody tr:hover {
            background-color: rgba(200,241,105,0.12);
        }

        .data-table .text-mono {
            font-size: 0.85rem;
        }

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

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

        .faq-item.active {
            border-color: var(--accent-lime);
        }

        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 18px 20px;
            text-align: left;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-main);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            cursor: pointer;
            transition: color var(--transition-fast);
            line-height: 1.5;
        }

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

        .faq-question .faq-icon {
            font-size: 1.2rem;
            font-weight: 400;
            color: var(--accent-orange);
            flex-shrink: 0;
            transition: transform var(--transition-base);
            line-height: 1;
        }

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

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

        .faq-item.active .faq-answer {
            max-height: 400px;
            padding: 0 20px 18px;
        }

        .faq-answer p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 8px;
        }

        .faq-answer ul {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 8px;
            padding-left: 18px;
        }

        .learning-path {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }

        .path-step {
            background-color: #FFFFFF;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 20px;
            position: relative;
            border-left: 3px solid var(--accent-lime);
            transition: all var(--transition-base);
        }

        .path-step:hover {
            border-color: var(--accent-lime);
            box-shadow: var(--shadow-sm);
        }

        .path-step .step-num {
            font-family: var(--font-mono);
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--accent-orange);
            line-height: 1;
            margin-bottom: 10px;
        }

        .path-step .step-title {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 6px;
            line-height: 1.5;
        }

        .path-step .step-desc {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        .cta-panel {
            background-color: var(--primary);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
            position: relative;
            overflow: hidden;
        }

        .cta-panel::before {
            content: '';
            position: absolute;
            top: -40px;
            right: -40px;
            width: 200px;
            height: 200px;
            background: radial-gradient(circle, rgba(200,241,105,0.15) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-panel h2 {
            color: #FFFFFF;
            margin-bottom: 8px;
            font-size: 1.5rem;
        }

        .cta-panel p {
            color: var(--text-light-muted);
            margin-bottom: 0;
            max-width: 520px;
        }

        .cta-panel .btn-primary {
            flex-shrink: 0;
        }

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

        .section-heading h2 {
            margin-bottom: 8px;
        }

        .section-heading p {
            color: var(--text-muted);
            font-size: 0.95rem;
            max-width: 680px;
            margin-bottom: 0;
        }

        .site-footer {
            background-color: var(--primary-dark);
            color: var(--text-light);
            padding: 60px 0 0;
            border-top: 3px solid var(--accent-lime);
        }

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

        .footer-brand h3 {
            color: #FFFFFF;
            font-size: 1.2rem;
            margin-bottom: 12px;
        }

        .footer-brand p {
            color: var(--text-light-muted);
            font-size: 0.88rem;
            line-height: 1.8;
        }

        .footer-col h4 {
            color: var(--accent-lime);
            font-size: 0.9rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            margin-bottom: 14px;
        }

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

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

        .footer-col ul a {
            color: var(--text-light-muted);
            text-decoration: none;
            font-size: 0.88rem;
            transition: color var(--transition-fast);
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(244,246,240,0.12);
            padding: 20px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
        }

        .footer-bottom p {
            color: var(--text-light-muted);
            font-size: 0.82rem;
            margin-bottom: 0;
            max-width: 680px;
            line-height: 1.7;
        }

        .footer-domain {
            color: var(--text-light-muted);
            font-size: 0.82rem;
            font-family: var(--font-mono);
            flex-shrink: 0;
        }

        @media screen and (max-width: 1024px) {
            .header-nav {
                gap: 2px;
            }
            .header-nav a {
                padding: 6px 8px;
                font-size: 0.8rem;
            }
            .header-search input {
                width: 130px;
            }
            .content-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .learning-path {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1.5fr 1fr 1fr;
                gap: 28px;
            }
        }

        @media screen and (max-width: 768px) {
            :root {
                --section-pad: 44px;
                --header-height: 54px;
            }
            .desktop-nav {
                display: none;
            }
            .header-right .header-search {
                display: none;
            }
            .header-right .header-cta {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .content-grid {
                grid-template-columns: 1fr;
            }
            .featured-row {
                grid-template-columns: 1fr;
            }
            .learning-path {
                grid-template-columns: 1fr;
            }
            .stats-strip {
                grid-template-columns: 1fr;
            }
            .cta-panel {
                flex-direction: column;
                text-align: center;
                padding: 32px 24px;
            }
            .cta-panel p {
                max-width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media screen and (max-width: 520px) {
            :root {
                --section-pad: 32px;
                --header-height: 52px;
            }
            .logo-text {
                font-size: 0.95rem;
            }
            .logo-icon {
                font-size: 1.1rem;
            }
            .page-banner {
                padding: 32px 0 28px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-brand {
                grid-column: auto;
            }
            .featured-item img {
                width: 72px;
                height: 72px;
            }
            .data-table {
                font-size: 0.75rem;
            }
            .data-table thead th,
            .data-table tbody td {
                padding: 8px 10px;
            }
            .cta-panel h2 {
                font-size: 1.25rem;
            }
        }

/* roulang page: category5 */
/* ============ 设计系统 ============ */
        :root {
            --primary: #0E3B2E;
            --primary-dark: #09271E;
            --primary-light: #1A4D3D;
            --accent-lime: #C8F169;
            --accent-orange: #F2A104;
            --accent-orange-dark: #D98A00;
            --bg-light: #F4F6F0;
            --bg-dark: #191C1F;
            --bg-dark-2: #222725;
            --text-main: #222725;
            --text-muted: #6B756F;
            --text-light: #F4F6F0;
            --text-light-muted: rgba(244,246,240,0.72);
            --border-light: #E0E5DA;
            --border-lime: #C8F169;
            --border-orange: #F2A104;
            --radius-sm: 4px;
            --radius-md: 6px;
            --radius-lg: 8px;
            --shadow-sm: 0 1px 3px rgba(14,59,46,0.06);
            --shadow-md: 0 4px 12px rgba(14,59,46,0.08);
            --shadow-lg: 0 8px 28px rgba(14,59,46,0.12);
            --font-sans: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --font-mono: 'JetBrains Mono', 'Roboto Mono', 'Consolas', monospace;
            --transition-fast: 160ms ease;
            --transition-base: 240ms ease;
            --transition-slow: 360ms ease;
            --container-max: 1240px;
            --header-height: 60px;
            --section-pad: 72px;
        }

        @media (max-width: 1024px) {
            :root {
                --section-pad: 56px;
                --header-height: 56px;
            }
        }

        @media (max-width: 640px) {
            :root {
                --section-pad: 44px;
                --header-height: 54px;
            }
        }

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

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-main);
            background-color: #FFFFFF;
            margin: 0;
            padding: 0;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-top: var(--header-height);
        }

        a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 3px;
            transition: color var(--transition-fast);
        }

        a:hover {
            color: var(--accent-orange);
        }

        a:focus-visible {
            outline: 2px solid var(--accent-orange);
            outline-offset: 2px;
            border-radius: 2px;
        }

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

        button,
        input,
        select,
        textarea {
            font-family: var(--font-sans);
            font-size: 16px;
        }

        button {
            cursor: pointer;
        }

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

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

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

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

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

        .section-dark {
            background-color: var(--primary);
            color: var(--text-light);
        }

        .section-dark h2,
        .section-dark h3 {
            color: #FFFFFF;
        }

        .section-dark p {
            color: var(--text-light-muted);
        }

        .text-mono {
            font-family: var(--font-mono);
            font-variant-numeric: tabular-nums;
            letter-spacing: -0.01em;
        }

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

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

        .label-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            color: var(--primary);
            background-color: rgba(200,241,105,0.28);
            padding: 5px 14px;
            border-radius: 20px;
            border: 1px solid rgba(200,241,105,0.6);
            margin-bottom: 14px;
        }

        .label-tag--orange {
            color: var(--accent-orange-dark);
            background-color: rgba(242,161,4,0.12);
            border-color: rgba(242,161,4,0.35);
        }

        .label-tag--dark {
            color: var(--accent-lime);
            background-color: rgba(200,241,105,0.1);
            border-color: rgba(200,241,105,0.3);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-family: var(--font-sans);
            font-size: 0.95rem;
            font-weight: 600;
            letter-spacing: 0.02em;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            border: 2px solid transparent;
            text-decoration: none;
            cursor: pointer;
            transition: all var(--transition-base);
            line-height: 1.4;
            min-height: 46px;
            text-align: center;
            white-space: nowrap;
        }

        .btn:focus-visible {
            outline: 3px solid var(--accent-orange);
            outline-offset: 3px;
        }

        .btn-primary {
            background-color: var(--accent-orange);
            color: var(--text-main);
            border-color: var(--accent-orange);
        }

        .btn-primary:hover {
            background-color: var(--accent-orange-dark);
            border-color: var(--accent-orange-dark);
            color: var(--text-main);
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(242,161,4,0.32);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: none;
        }

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

        .btn-secondary:hover {
            background-color: rgba(14,59,46,0.08);
            color: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 2px 8px rgba(14,59,46,0.1);
        }

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

        .btn-sm {
            padding: 8px 16px;
            font-size: 0.85rem;
            min-height: 36px;
        }

        /* ============ 导航 ============ */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--header-height);
            background-color: #FFFFFF;
            border-bottom: 1px solid var(--border-light);
            z-index: 1000;
            box-shadow: 0 1px 6px rgba(14,59,46,0.04);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            height: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
        }

        .header-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            text-decoration: none;
            color: var(--primary);
            font-weight: 700;
            font-size: 1.05rem;
            letter-spacing: 0.01em;
            flex-shrink: 0;
        }

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

        .logo-icon {
            font-size: 1.3rem;
            display: inline-block;
        }

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

        .header-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: nowrap;
            margin-left: auto;
        }

        .header-nav a {
            display: inline-flex;
            align-items: center;
            padding: 8px 10px;
            font-size: 0.88rem;
            font-weight: 500;
            color: var(--text-main);
            text-decoration: none;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.01em;
        }

        .header-nav a:hover {
            color: var(--primary);
            background-color: rgba(200,241,105,0.18);
        }

        .header-nav a.active {
            color: var(--primary);
            background-color: rgba(200,241,105,0.22);
            font-weight: 600;
        }

        .header-right {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .header-search {
            display: flex;
            align-items: center;
            gap: 6px;
            background-color: var(--bg-light);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            padding: 6px 12px;
            transition: border-color var(--transition-fast);
        }

        .header-search:focus-within {
            border-color: var(--accent-lime);
            outline: 2px solid rgba(200,241,105,0.3);
        }

        .search-icon {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .header-search input {
            border: none;
            background: transparent;
            outline: none;
            font-size: 0.85rem;
            color: var(--text-main);
            width: 160px;
            padding: 2px 0;
        }

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

        .header-cta {
            text-decoration: none;
            flex-shrink: 0;
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 4px;
            background: none;
            border: 2px solid var(--primary);
            border-radius: var(--radius-sm);
            padding: 8px 10px;
            min-height: 42px;
            min-width: 42px;
            align-items: center;
            justify-content: center;
        }

        .hamburger span {
            display: block;
            width: 18px;
            height: 2px;
            background-color: var(--primary);
            border-radius: 1px;
            transition: all var(--transition-fast);
        }

        .hamburger.open span:nth-child(1) {
            transform: translateY(6px) rotate(45deg);
        }

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

        .hamburger.open span:nth-child(3) {
            transform: translateY(-6px) rotate(-45deg);
        }

        .mobile-nav {
            display: none;
            position: fixed;
            top: var(--header-height);
            left: 0;
            right: 0;
            background-color: #FFFFFF;
            border-bottom: 2px solid var(--border-lime);
            box-shadow: var(--shadow-lg);
            z-index: 999;
            padding: 16px 20px 24px;
            flex-direction: column;
            gap: 6px;
        }

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

        .mobile-nav a {
            padding: 12px 14px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-main);
            text-decoration: none;
            border-radius: var(--radius-sm);
            border: 1px solid transparent;
            transition: all var(--transition-fast);
        }

        .mobile-nav a:hover {
            background-color: rgba(200,241,105,0.18);
            color: var(--primary);
        }

        .mobile-nav a.active {
            background-color: rgba(200,241,105,0.22);
            border-color: rgba(200,241,105,0.4);
            color: var(--primary);
            font-weight: 600;
        }

        /* ============ 分类H1区 ============ */
        .page-header {
            background-color: var(--primary);
            padding: 48px 0 40px;
            border-top: 4px solid var(--accent-lime);
            position: relative;
            overflow: hidden;
        }

        .page-header::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 40%;
            height: 100%;
            background: radial-gradient(circle at center, rgba(200,241,105,0.08), transparent 70%);
            pointer-events: none;
        }

        .page-header h1 {
            color: #FFFFFF;
            font-size: 2rem;
            font-weight: 700;
            margin: 0 0 12px;
            letter-spacing: 0.01em;
            line-height: 1.35;
        }

        .page-header .header-desc {
            color: var(--text-light-muted);
            font-size: 0.95rem;
            max-width: 680px;
            margin: 0;
            line-height: 1.75;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 0.82rem;
            color: rgba(244,246,240,0.6);
            margin-bottom: 18px;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: rgba(200,241,105,0.85);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

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

        .breadcrumb .separator {
            color: rgba(244,246,240,0.35);
        }

        /* ============ 板块通用 ============ */
        .section-title {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            margin: 0 0 8px;
            letter-spacing: 0.01em;
            line-height: 1.4;
        }

        .section-subtitle {
            font-size: 0.95rem;
            color: var(--text-muted);
            margin: 0 0 36px;
            line-height: 1.7;
            max-width: 640px;
        }

        .section-header {
            margin-bottom: 34px;
        }

        /* ============ 数据概览 ============ */
        .stat-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin: 0;
        }

        .stat-card {
            background-color: #FFFFFF;
            border: 1px solid var(--border-light);
            border-left: 3px solid var(--accent-lime);
            border-radius: var(--radius-md);
            padding: 24px 20px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
        }

        .stat-card:hover {
            box-shadow: var(--shadow-md);
            border-left-color: var(--accent-orange);
            transform: translateY(-2px);
        }

        .stat-number {
            font-family: var(--font-mono);
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            display: block;
            margin-bottom: 6px;
        }

        .stat-number .unit {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-muted);
            margin-left: 2px;
        }

        .stat-label {
            font-size: 0.88rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* ============ 列表卡片 ============ */
        .review-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .review-card {
            background-color: #FFFFFF;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }

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

        .review-card:hover .review-title {
            color: var(--primary-dark);
        }

        .review-thumb {
            width: 100%;
            height: 180px;
            object-fit: cover;
            background-color: var(--bg-light);
            border-bottom: 1px solid var(--border-light);
        }

        .review-body {
            padding: 20px 22px 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

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

        .review-tag {
            font-size: 0.72rem;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 12px;
            background-color: rgba(14,59,46,0.06);
            color: var(--primary);
            letter-spacing: 0.04em;
        }

        .review-tag--orange {
            background-color: rgba(242,161,4,0.12);
            color: var(--accent-orange-dark);
        }

        .review-tag--lime {
            background-color: rgba(200,241,105,0.22);
            color: var(--primary-dark);
        }

        .review-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-main);
            margin: 0 0 10px;
            line-height: 1.5;
            transition: color var(--transition-fast);
        }

        .review-summary {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin: 0 0 18px;
            line-height: 1.7;
            flex: 1;
        }

        .review-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 0.78rem;
            color: var(--text-muted);
            border-top: 1px solid var(--border-light);
            padding-top: 14px;
        }

        .review-meta .mono {
            font-family: var(--font-mono);
            font-variant-numeric: tabular-nums;
            font-weight: 500;
            color: var(--primary);
        }

        /* ============ 数据统计板块 ============ */
        .table-wrapper {
            overflow-x: auto;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            background-color: #FFFFFF;
            box-shadow: var(--shadow-sm);
        }

        .data-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.9rem;
            min-width: 640px;
        }

        .data-table thead th {
            background-color: var(--primary);
            color: #FFFFFF;
            padding: 14px 18px;
            text-align: left;
            font-weight: 600;
            font-size: 0.85rem;
            letter-spacing: 0.03em;
            white-space: nowrap;
        }

        .data-table tbody td {
            padding: 14px 18px;
            border-bottom: 1px solid var(--border-light);
            color: var(--text-main);
            font-size: 0.88rem;
        }

        .data-table tbody tr:last-child td {
            border-bottom: none;
        }

        .data-table tbody tr:hover {
            background-color: rgba(200,241,105,0.1);
        }

        .data-table .mono {
            font-family: var(--font-mono);
            font-variant-numeric: tabular-nums;
            font-weight: 600;
            color: var(--primary);
        }

        .data-table .highlight {
            color: var(--accent-orange-dark);
            font-weight: 700;
        }

        /* ============ 热门推荐 ============ */
        .featured-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .featured-item {
            display: grid;
            grid-template-columns: 220px 1fr;
            gap: 20px;
            background-color: #FFFFFF;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
        }

        .featured-item:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--accent-lime);
            transform: translateX(2px);
        }

        .featured-thumb {
            width: 100%;
            height: 100%;
            min-height: 150px;
            object-fit: cover;
            background-color: var(--bg-light);
        }

        .featured-body {
            padding: 18px 22px;
            display: flex;
            flex-direction: column;
        }

        .featured-title {
            font-size: 1.08rem;
            font-weight: 700;
            color: var(--text-main);
            margin: 0 0 8px;
            line-height: 1.5;
        }

        .featured-summary {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin: 0 0 12px;
            line-height: 1.7;
        }

        .featured-meta {
            font-size: 0.78rem;
            color: var(--text-muted);
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        /* ============ FAQ ============ */
        .faq-list {
            max-width: 740px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background-color: #FFFFFF;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-base);
        }

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

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 14px;
            background: none;
            border: none;
            padding: 18px 22px;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-main);
            text-align: left;
            min-height: 52px;
            transition: color var(--transition-fast);
        }

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

        .faq-question .faq-icon {
            font-size: 1.1rem;
            color: var(--accent-orange);
            flex-shrink: 0;
            transition: transform var(--transition-base);
            font-family: var(--font-mono);
            font-weight: 700;
        }

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

        .faq-answer {
            display: none;
            padding: 0 22px 20px;
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.75;
        }

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

        .faq-answer p {
            margin: 0 0 10px;
        }

        .faq-answer p:last-child {
            margin-bottom: 0;
        }

        /* ============ 方法指南 ============ */
        .method-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .method-card {
            background-color: #FFFFFF;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 26px 20px;
            position: relative;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
        }

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

        .method-step {
            font-family: var(--font-mono);
            font-size: 2rem;
            font-weight: 700;
            color: var(--accent-lime);
            line-height: 1;
            display: block;
            margin-bottom: 14px;
        }

        .method-title {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-main);
            margin: 0 0 10px;
            line-height: 1.5;
        }

        .method-desc {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.7;
        }

        /* ============ CTA ============ */
        .cta-panel {
            background-color: var(--primary);
            border-radius: var(--radius-lg);
            padding: 44px 40px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 30px;
            border-left: 4px solid var(--accent-lime);
            box-shadow: var(--shadow-lg);
        }

        .cta-content h2 {
            color: #FFFFFF;
            font-size: 1.4rem;
            font-weight: 700;
            margin: 0 0 8px;
            line-height: 1.4;
        }

        .cta-content p {
            color: var(--text-light-muted);
            font-size: 0.92rem;
            margin: 0;
            line-height: 1.7;
        }

        .cta-actions {
            display: flex;
            gap: 12px;
            flex-shrink: 0;
            flex-wrap: wrap;
        }

        .cta-actions .btn-primary {
            background-color: var(--accent-orange);
            border-color: var(--accent-orange);
        }

        .cta-actions .btn-primary:hover {
            background-color: var(--accent-orange-dark);
        }

        .cta-actions .btn-secondary {
            color: #FFFFFF;
            border-color: rgba(244,246,240,0.5);
        }

        .cta-actions .btn-secondary:hover {
            background-color: rgba(244,246,240,0.1);
            color: #FFFFFF;
        }

        /* ============ 页脚 ============ */
        .site-footer {
            background-color: var(--primary);
            color: var(--text-light);
            padding: 64px 0 32px;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand h3 {
            color: #FFFFFF;
            font-size: 1.15rem;
            font-weight: 700;
            margin: 0 0 14px;
            line-height: 1.5;
        }

        .footer-brand p {
            color: var(--text-light-muted);
            font-size: 0.85rem;
            line-height: 1.7;
            margin: 0;
            max-width: 320px;
        }

        .footer-col h4 {
            color: var(--accent-lime);
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            margin: 0 0 14px;
            text-transform: uppercase;
        }

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

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

        .footer-col ul li a {
            color: rgba(244,246,240,0.75);
            text-decoration: none;
            font-size: 0.85rem;
            transition: color var(--transition-fast);
        }

        .footer-col ul li a:hover {
            color: var(--accent-lime);
        }

        .footer-bottom {
            border-top: 1px solid rgba(244,246,240,0.15);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .footer-bottom p {
            color: var(--text-light-muted);
            font-size: 0.78rem;
            margin: 0;
            line-height: 1.6;
            max-width: 680px;
        }

        .footer-domain {
            color: rgba(244,246,240,0.55);
            font-size: 0.78rem;
            white-space: nowrap;
        }

        /* ============ 响应式 ============ */
        @media (max-width: 1024px) {
            .header-nav a {
                padding: 8px 7px;
                font-size: 0.82rem;
            }
            .header-search input {
                width: 120px;
            }
            .review-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }
            .method-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .cta-panel {
                flex-direction: column;
                align-items: flex-start;
                padding: 32px 24px;
            }
        }

        @media (max-width: 768px) {
            .header-nav {
                display: none;
            }
            .header-search {
                display: none;
            }
            .header-cta {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .mobile-nav {
                display: none;
            }
            .mobile-nav.open {
                display: flex;
            }
            .page-header {
                padding: 36px 0 32px;
            }
            .page-header h1 {
                font-size: 1.5rem;
            }
            .stat-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .review-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .featured-item {
                grid-template-columns: 1fr;
            }
            .featured-thumb {
                height: 180px;
                min-height: auto;
            }
            .method-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .cta-panel {
                padding: 26px 20px;
                border-radius: var(--radius-md);
            }
            .cta-content h2 {
                font-size: 1.2rem;
            }
            .section-title {
                font-size: 1.3rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
        }

        @media (max-width: 520px) {
            body {
                font-size: 15px;
                line-height: 1.75;
            }
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .page-header h1 {
                font-size: 1.35rem;
            }
            .page-header .header-desc {
                font-size: 0.88rem;
            }
            .section-title {
                font-size: 1.2rem;
            }
            .review-thumb {
                height: 150px;
            }
            .btn {
                padding: 10px 20px;
                font-size: 0.88rem;
                white-space: normal;
            }
            .cta-actions {
                flex-direction: column;
                width: 100%;
                gap: 10px;
            }
            .cta-actions .btn {
                width: 100%;
            }
            .table-wrapper {
                border-radius: var(--radius-sm);
            }
            .data-table thead th,
            .data-table tbody td {
                padding: 10px 14px;
                font-size: 0.8rem;
            }
        }

        @media print {
            .site-header,
            .site-footer,
            .hamburger,
            .mobile-nav,
            .cta-panel {
                display: none;
            }
            body {
                padding-top: 0;
                background-color: #FFF;
            }
        }

/* roulang page: category6 */
:root {
            --primary: #0E3B2E;
            --primary-dark: #09271E;
            --primary-light: #1A4D3D;
            --accent-lime: #C8F169;
            --accent-orange: #F2A104;
            --accent-orange-dark: #D98A00;
            --bg-light: #F4F6F0;
            --bg-dark: #191C1F;
            --bg-dark-2: #222725;
            --text-main: #222725;
            --text-muted: #6B756F;
            --text-light: #F4F6F0;
            --text-light-muted: rgba(244,246,240,0.72);
            --border-light: #E0E5DA;
            --border-lime: #C8F169;
            --border-orange: #F2A104;
            --radius-sm: 4px;
            --radius-md: 6px;
            --radius-lg: 8px;
            --shadow-sm: 0 1px 3px rgba(14,59,46,0.06);
            --shadow-md: 0 4px 12px rgba(14,59,46,0.08);
            --shadow-lg: 0 8px 28px rgba(14,59,46,0.12);
            --font-sans: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --font-mono: 'JetBrains Mono', 'Roboto Mono', 'Consolas', monospace;
            --transition-fast: 160ms ease;
            --transition-base: 240ms ease;
            --transition-slow: 360ms ease;
            --container-max: 1240px;
            --header-height: 60px;
            --section-pad: 72px;
        }

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

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-main);
            background-color: #FFFFFF;
            margin: 0;
            padding: 0;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 3px;
            transition: color var(--transition-fast);
        }

        a:hover {
            color: var(--accent-orange);
        }

        a:focus-visible {
            outline: 2px solid var(--accent-orange);
            outline-offset: 2px;
            border-radius: 2px;
        }

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

        button,
        input,
        select,
        textarea {
            font-family: var(--font-sans);
            font-size: 16px;
        }

        button {
            cursor: pointer;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

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

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

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

        .section-dark {
            background-color: var(--primary);
            color: var(--text-light);
        }

        .section-dark h2,
        .section-dark h3 {
            color: #FFFFFF;
        }

        .section-dark p {
            color: var(--text-light-muted);
        }

        .text-mono {
            font-family: var(--font-mono);
            font-variant-numeric: tabular-nums;
            letter-spacing: -0.01em;
        }

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

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

        .label-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            color: var(--primary);
            background-color: rgba(200,241,105,0.28);
            padding: 5px 14px;
            border-radius: 20px;
            border: 1px solid rgba(200,241,105,0.6);
            margin-bottom: 14px;
        }

        .label-tag--orange {
            color: var(--accent-orange-dark);
            background-color: rgba(242,161,4,0.12);
            border-color: rgba(242,161,4,0.35);
        }

        .label-tag--dark {
            color: var(--accent-lime);
            background-color: rgba(200,241,105,0.1);
            border-color: rgba(200,241,105,0.3);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-family: var(--font-sans);
            font-size: 0.95rem;
            font-weight: 600;
            letter-spacing: 0.02em;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            border: 2px solid transparent;
            text-decoration: none;
            cursor: pointer;
            transition: all var(--transition-base);
            line-height: 1.4;
            min-height: 46px;
            text-align: center;
            white-space: nowrap;
        }

        .btn:focus-visible {
            outline: 3px solid var(--accent-orange);
            outline-offset: 3px;
        }

        .btn-primary {
            background-color: var(--accent-orange);
            color: var(--text-main);
            border-color: var(--accent-orange);
        }

        .btn-primary:hover {
            background-color: var(--accent-orange-dark);
            border-color: var(--accent-orange-dark);
            color: var(--text-main);
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(242,161,4,0.32);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: none;
        }

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

        .btn-secondary:hover {
            background-color: rgba(14,59,46,0.06);
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(14,59,46,0.16);
        }

        .btn-secondary:active {
            transform: translateY(0);
            box-shadow: none;
        }

        .btn-sm {
            padding: 8px 18px;
            font-size: 0.85rem;
            min-height: 38px;
            border-radius: var(--radius-sm);
        }

        .btn-lg {
            padding: 16px 36px;
            font-size: 1.05rem;
            min-height: 54px;
            border-radius: var(--radius-md);
        }

        /* Header */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background-color: #FFFFFF;
            border-bottom: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition-base), border-color var(--transition-base);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-md);
            border-bottom-color: rgba(200,241,105,0.5);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            gap: 16px;
        }

        .header-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            text-decoration: none;
            color: var(--primary);
            flex-shrink: 0;
            font-weight: 700;
            font-size: 1.1rem;
            letter-spacing: 0.02em;
        }

        .header-logo:hover {
            color: var(--primary);
            text-decoration: none;
        }

        .logo-icon {
            font-size: 1.4rem;
            line-height: 1;
            display: inline-block;
        }

        .logo-text {
            line-height: 1.3;
        }

        .header-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            margin-left: 20px;
            flex: 1;
            min-width: 0;
        }

        .header-nav a {
            display: inline-flex;
            align-items: center;
            padding: 8px 12px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-main);
            text-decoration: none;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            white-space: nowrap;
            border-bottom: 2px solid transparent;
        }

        .header-nav a:hover {
            color: var(--primary);
            background-color: rgba(14,59,46,0.04);
            text-decoration: none;
        }

        .header-nav a.active {
            color: var(--primary);
            font-weight: 700;
            border-bottom-color: var(--accent-orange);
            background-color: rgba(200,241,105,0.12);
        }

        .header-right {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .header-search {
            display: flex;
            align-items: center;
            gap: 6px;
            background-color: var(--bg-light);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            padding: 0 10px;
            height: 38px;
            transition: border-color var(--transition-fast);
        }

        .header-search:focus-within {
            border-color: var(--border-lime);
            box-shadow: 0 0 0 3px rgba(200,241,105,0.3);
        }

        .search-icon {
            font-size: 0.9rem;
            line-height: 1;
            color: var(--text-muted);
            flex-shrink: 0;
        }

        .header-search input {
            border: none;
            outline: none;
            background: transparent;
            font-size: 0.85rem;
            color: var(--text-main);
            width: 180px;
            padding: 0;
            line-height: 1.4;
        }

        .header-search input::placeholder {
            color: var(--text-muted);
            font-size: 0.8rem;
        }

        .header-cta {
            text-decoration: none;
            border-radius: var(--radius-sm);
            flex-shrink: 0;
        }

        .hamburger {
            display: none;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            gap: 4px;
            width: 44px;
            height: 44px;
            background: transparent;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            padding: 0;
            transition: all var(--transition-fast);
            flex-shrink: 0;
        }

        .hamburger:hover {
            border-color: var(--primary);
            background-color: rgba(14,59,46,0.04);
        }

        .hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background-color: var(--primary);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        .hamburger.is-open span:nth-child(1) {
            transform: translateY(6px) rotate(45deg);
        }

        .hamburger.is-open span:nth-child(2) {
            opacity: 0;
        }

        .hamburger.is-open span:nth-child(3) {
            transform: translateY(-6px) rotate(-45deg);
        }

        /* Main */
        main {
            padding-top: var(--header-height);
        }

        /* Category H1 Bar */
        .category-hero {
            background-color: var(--bg-light);
            border-bottom: 2px solid var(--border-lime);
            padding: 40px 0 36px;
        }

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

        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 6px;
            font-size: 0.82rem;
            color: var(--text-muted);
            margin-bottom: 14px;
        }

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

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

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

        .category-hero h1 {
            font-size: 2rem;
            font-weight: 700;
            line-height: 1.35;
            color: var(--primary);
            margin: 0 0 12px;
            letter-spacing: 0.01em;
        }

        .category-hero .hero-desc {
            font-size: 0.98rem;
            color: var(--text-muted);
            line-height: 1.85;
            margin: 0;
            max-width: 700px;
        }

        .category-hero .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            margin-top: 20px;
            padding-top: 18px;
            border-top: 1px solid var(--border-light);
        }

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

        .hero-stat-item .stat-value {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--primary);
            font-family: var(--font-mono);
            letter-spacing: -0.01em;
        }

        .hero-stat-item .stat-label {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* Section headings */
        .section-head {
            margin-bottom: 36px;
        }

        .section-head h2 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.4;
            margin: 0 0 10px;
            letter-spacing: 0.01em;
        }

        .section-head p {
            font-size: 0.95rem;
            color: var(--text-muted);
            margin: 0;
            max-width: 680px;
            line-height: 1.75;
        }

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

        .section-head--center p {
            margin-left: auto;
            margin-right: auto;
        }

        /* News Cards */
        .news-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
        }

        .news-card {
            background: #FFFFFF;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            flex: 1 1 calc(33.333% - 14px);
            min-width: 280px;
            max-width: calc(33.333% - 14px);
            display: flex;
            flex-direction: column;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-sm);
        }

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

        .news-card-img {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background-color: var(--bg-light);
            position: relative;
        }

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

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

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

        .news-card-tag {
            display: inline-block;
            font-size: 0.72rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            color: var(--accent-orange-dark);
            background-color: rgba(242,161,4,0.1);
            padding: 3px 10px;
            border-radius: 12px;
            align-self: flex-start;
            margin-bottom: 10px;
            border: 1px solid rgba(242,161,4,0.25);
        }

        .news-card h3 {
            font-size: 1.02rem;
            font-weight: 600;
            line-height: 1.5;
            color: var(--text-main);
            margin: 0 0 8px;
            transition: color var(--transition-fast);
        }

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

        .news-card p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0 0 14px;
            flex: 1;
        }

        .news-card-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 10px;
            font-size: 0.78rem;
            color: var(--text-muted);
            border-top: 1px solid var(--border-light);
            padding-top: 12px;
            font-family: var(--font-mono);
        }

        .news-card-meta .date {
            color: var(--text-muted);
        }

        .news-card-meta .odds {
            color: var(--primary);
            font-weight: 600;
        }

        /* Data Table */
        .data-table-wrapper {
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
        }

        .data-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 720px;
            font-size: 0.9rem;
        }

        .data-table thead th {
            background-color: var(--primary);
            color: #FFFFFF;
            font-weight: 600;
            text-align: left;
            padding: 14px 18px;
            font-size: 0.85rem;
            letter-spacing: 0.02em;
            white-space: nowrap;
            border-bottom: 2px solid var(--border-lime);
        }

        .data-table tbody td {
            padding: 13px 18px;
            border-bottom: 1px solid var(--border-light);
            color: var(--text-main);
        }

        .data-table tbody tr:last-child td {
            border-bottom: none;
        }

        .data-table tbody tr {
            background-color: #FFFFFF;
            transition: background-color var(--transition-fast);
        }

        .data-table tbody tr:nth-child(even) {
            background-color: rgba(244,246,240,0.5);
        }

        .data-table tbody tr:hover {
            background-color: rgba(200,241,105,0.14);
        }

        .data-table .num {
            font-family: var(--font-mono);
            font-variant-numeric: tabular-nums;
        }

        .data-table .up {
            color: var(--primary);
            font-weight: 600;
        }

        .data-table .down {
            color: var(--accent-orange);
            font-weight: 600;
        }

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

        /* Recommendation Cards */
        .rec-list {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
        }

        .rec-card {
            background: #FFFFFF;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            flex: 1 1 calc(33.333% - 14px);
            min-width: 280px;
            max-width: calc(33.333% - 14px);
            display: flex;
            flex-direction: column;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-sm);
            border-left: 3px solid var(--accent-lime);
        }

        .rec-card:hover {
            border-left-color: var(--accent-orange);
            border-color: var(--border-lime);
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        .rec-card-img {
            aspect-ratio: 16 / 7;
            overflow: hidden;
            background-color: var(--bg-light);
        }

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

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

        .rec-card-body {
            padding: 16px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .rec-card h3 {
            font-size: 1rem;
            font-weight: 600;
            line-height: 1.5;
            color: var(--text-main);
            margin: 0 0 6px;
            transition: color var(--transition-fast);
        }

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

        .rec-card p {
            font-size: 0.86rem;
            color: var(--text-muted);
            line-height: 1.65;
            margin: 0 0 10px;
            flex: 1;
        }

        .rec-card .rec-meta {
            font-size: 0.78rem;
            color: var(--text-muted);
            font-family: var(--font-mono);
            border-top: 1px solid var(--border-light);
            padding-top: 10px;
        }

        /* FAQ */
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
        }

        .faq-item {
            background: #FFFFFF;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition-base);
        }

        .faq-item:hover {
            border-color: rgba(200,241,105,0.5);
        }

        .faq-item.is-open {
            border-color: var(--border-lime);
            box-shadow: var(--shadow-sm);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 14px;
            width: 100%;
            padding: 16px 20px;
            background: transparent;
            border: none;
            text-align: left;
            font-family: var(--font-sans);
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-main);
            transition: all var(--transition-fast);
            min-height: 52px;
        }

        .faq-question:hover {
            color: var(--primary);
            background-color: rgba(200,241,105,0.06);
        }

        .faq-question:focus-visible {
            outline: 2px solid var(--accent-orange);
            outline-offset: -2px;
            border-radius: var(--radius-sm);
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background-color: var(--bg-light);
            color: var(--primary);
            font-size: 1rem;
            font-weight: 700;
            transition: all var(--transition-fast);
            user-select: none;
            line-height: 1;
        }

        .faq-item.is-open .faq-question .faq-icon {
            background-color: var(--accent-orange);
            color: var(--text-main);
            transform: rotate(45deg);
        }

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

        .faq-answer-inner {
            padding: 0 20px 18px;
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.8;
        }

        .faq-answer-inner p {
            margin: 0 0 8px;
        }

        .faq-answer-inner p:last-child {
            margin-bottom: 0;
        }

        /* Deep Read */
        .deep-read-list {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
        }

        .deep-read-card {
            background: #FFFFFF;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            padding: 20px 24px;
            flex: 1 1 calc(50% - 10px);
            min-width: 300px;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-sm);
        }

        .deep-read-card:hover {
            border-color: var(--border-lime);
            box-shadow: var(--shadow-md);
        }

        .deep-read-card h3 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--primary);
            margin: 0 0 8px;
            line-height: 1.5;
        }

        .deep-read-card p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0;
        }

        /* CTA Section */
        .cta-section {
            background-color: var(--primary);
            color: var(--text-light);
            padding: 56px 0;
        }

        .cta-inner {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 28px;
        }

        .cta-content {
            flex: 1 1 55%;
            min-width: 280px;
        }

        .cta-content h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: #FFFFFF;
            margin: 0 0 10px;
            line-height: 1.4;
        }

        .cta-content p {
            font-size: 0.95rem;
            color: var(--text-light-muted);
            margin: 0;
            line-height: 1.8;
            max-width: 520px;
        }

        .cta-actions {
            flex-shrink: 0;
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        /* Footer */
        .site-footer {
            background-color: var(--primary-dark);
            color: var(--text-light-muted);
            padding: 60px 0 28px;
        }

        .footer-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
            margin-bottom: 40px;
        }

        .footer-brand {
            flex: 1 1 300px;
            min-width: 260px;
        }

        .footer-brand h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: #FFFFFF;
            margin: 0 0 12px;
            letter-spacing: 0.02em;
        }

        .footer-brand p {
            font-size: 0.88rem;
            color: var(--text-light-muted);
            line-height: 1.75;
            margin: 0;
        }

        .footer-col {
            flex: 1 1 160px;
            min-width: 140px;
        }

        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--accent-lime);
            margin: 0 0 14px;
            letter-spacing: 0.04em;
        }

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

        .footer-col ul li a {
            color: var(--text-light-muted);
            text-decoration: none;
            font-size: 0.85rem;
            transition: color var(--transition-fast);
        }

        .footer-col ul li a:hover {
            color: var(--accent-lime);
            text-decoration: underline;
        }

        .footer-bottom {
            border-top: 1px solid rgba(200,241,105,0.18);
            padding-top: 22px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 14px;
        }

        .footer-bottom p {
            font-size: 0.82rem;
            color: var(--text-light-muted);
            margin: 0;
            flex: 1 1 60%;
            min-width: 260px;
            line-height: 1.7;
        }

        .footer-domain {
            font-size: 0.78rem;
            color: var(--text-light-muted);
            font-family: var(--font-mono);
            flex-shrink: 0;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            :root {
                --section-pad: 56px;
                --header-height: 56px;
            }
            .header-nav {
                gap: 2px;
            }
            .header-nav a {
                padding: 8px 9px;
                font-size: 0.84rem;
            }
            .header-search input {
                width: 140px;
            }
            .news-card,
            .rec-card {
                flex: 1 1 calc(50% - 10px);
                max-width: calc(50% - 10px);
                min-width: 250px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-pad: 44px;
                --header-height: 54px;
            }
            .header-nav {
                display: none;
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background-color: #FFFFFF;
                border-bottom: 2px solid var(--border-lime);
                box-shadow: var(--shadow-md);
                padding: 10px 20px 18px;
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
                margin-left: 0;
                z-index: 999;
                max-height: calc(100vh - var(--header-height) - 20px);
                overflow-y: auto;
            }
            .header-nav.is-open {
                display: flex;
            }
            .header-nav a {
                padding: 12px 16px;
                font-size: 0.95rem;
                border-radius: var(--radius-sm);
                border-bottom: none;
                justify-content: flex-start;
            }
            .header-nav a.active {
                background-color: rgba(200,241,105,0.16);
                border-bottom: none;
            }
            .hamburger {
                display: flex;
            }
            .header-search {
                display: none;
            }
            .header-cta {
                padding: 8px 14px;
                font-size: 0.82rem;
                min-height: 36px;
            }
            .category-hero {
                padding: 28px 0 24px;
            }
            .category-hero h1 {
                font-size: 1.5rem;
            }
            .category-hero .hero-desc {
                font-size: 0.9rem;
            }
            .news-card,
            .rec-card {
                flex: 1 1 100%;
                max-width: 100%;
                min-width: 0;
            }
            .deep-read-card {
                flex: 1 1 100%;
                min-width: 0;
            }
            .cta-inner {
                flex-direction: column;
                align-items: flex-start;
            }
            .cta-actions {
                width: 100%;
            }
            .section-head h2 {
                font-size: 1.35rem;
            }
            .footer-grid {
                gap: 24px;
            }
            .footer-brand {
                flex: 1 1 100%;
            }
            .footer-col {
                flex: 1 1 45%;
            }
        }

        @media (max-width: 520px) {
            :root {
                --section-pad: 36px;
                --header-height: 52px;
            }
            .header-logo {
                font-size: 0.95rem;
                gap: 5px;
            }
            .logo-icon {
                font-size: 1.2rem;
            }
            .header-cta {
                display: none;
            }
            .category-hero {
                padding: 22px 0 20px;
            }
            .category-hero h1 {
                font-size: 1.3rem;
            }
            .hero-stat-item .stat-value {
                font-size: 1.1rem;
            }
            .section-head h2 {
                font-size: 1.25rem;
            }
            .news-card h3 {
                font-size: 0.95rem;
            }
            .news-card p {
                font-size: 0.84rem;
            }
            .rec-card h3 {
                font-size: 0.93rem;
            }
            .btn-lg {
                padding: 14px 24px;
                font-size: 0.95rem;
                min-height: 48px;
            }
            .footer-col {
                flex: 1 1 100%;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }