/* roulang page: index */
:root {
            --color-primary: #3B82F6;
            --color-primary-light: #60A5FA;
            --color-primary-dark: #2563EB;
            --color-secondary: #22C55E;
            --color-secondary-dark: #16A34A;
            --color-bg: #F8FAFC;
            --color-card-bg: #FFFFFF;
            --color-heading: #0F172A;
            --color-text: #334155;
            --color-muted: #64748B;
            --color-border: #E2E8F0;
            --color-footer-bg: #0F172A;
            --color-footer-text: #CBD5E1;
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-input: 6px;
            --shadow-card: 0 4px 16px rgba(15, 23, 42, 0.04);
            --shadow-card-hover: 0 10px 28px rgba(15, 23, 42, 0.08);
            --shadow-overlay: 0 20px 60px rgba(15, 23, 42, 0.25);
            --font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --container-max: 1200px;
            --spacing-section: 80px;
            --spacing-section-mobile: 56px;
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --header-height: 72px;
        }

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

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

        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.8;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
        }

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

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

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

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

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

        input {
            border: 1px solid var(--color-border);
            border-radius: var(--radius-input);
            padding: 12px 16px;
            font-size: 15px;
            color: var(--color-heading);
            background: #fff;
            outline: none;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
            width: 100%;
        }

        input:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
        }

        input::placeholder {
            color: #94A3B8;
        }

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

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

        /* Header */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--color-border);
            transition: box-shadow var(--transition-base);
        }

        .site-header.scrolled {
            box-shadow: 0 2px 16px rgba(15, 23, 42, 0.06);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .header-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 22px;
            color: var(--color-heading);
            letter-spacing: 0.5px;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

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

        .header-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            font-weight: 800;
            flex-shrink: 0;
        }

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

        .btn-menu {
            width: 44px;
            height: 44px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: #fff;
            border: 1px solid var(--color-border);
            color: var(--color-heading);
            transition: all var(--transition-fast);
            flex-direction: column;
            gap: 5px;
        }

        .btn-menu:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
        }

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

        .btn-menu span {
            display: block;
            width: 22px;
            height: 2px;
            background: currentColor;
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        .btn-primary-header {
            background: var(--color-primary);
            color: #fff;
            padding: 10px 20px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .btn-primary-header:hover {
            background: var(--color-primary-dark);
            color: #fff;
            text-decoration: none;
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
        }

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

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

        /* Drawer Navigation */
        .drawer-overlay {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(15, 23, 42, 0.5);
            z-index: 2000;
            opacity: 0;
            visibility: hidden;
            transition: opacity var(--transition-base), visibility var(--transition-base);
        }

        .drawer-overlay.active {
            opacity: 1;
            visibility: visible;
        }

        .drawer-nav {
            position: fixed;
            top: 0;
            right: -480px;
            width: 420px;
            max-width: 90vw;
            height: 100vh;
            background: #fff;
            z-index: 3000;
            box-shadow: var(--shadow-overlay);
            transition: right var(--transition-base);
            display: flex;
            flex-direction: column;
            padding: 0;
            overflow-y: auto;
        }

        .drawer-nav.open {
            right: 0;
        }

        .drawer-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 28px;
            border-bottom: 1px solid var(--color-border);
        }

        .drawer-logo {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-heading);
        }

        .btn-close-drawer {
            width: 40px;
            height: 40px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: #f1f5f9;
            border: none;
            color: var(--color-heading);
            font-size: 20px;
            transition: all var(--transition-fast);
        }

        .btn-close-drawer:hover {
            background: #e2e8f0;
        }

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

        .drawer-body {
            flex: 1;
            padding: 24px 28px 40px;
            display: flex;
            flex-direction: column;
        }

        .drawer-nav-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .drawer-nav-list li {
            border-radius: 8px;
            transition: background var(--transition-fast);
        }

        .drawer-nav-list li:hover {
            background: #f1f5f9;
        }

        .drawer-nav-list a {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 16px;
            font-size: 22px;
            font-weight: 600;
            color: var(--color-heading);
            text-decoration: none;
            border-radius: 8px;
            transition: all var(--transition-fast);
        }

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

        .drawer-nav-list a.active {
            color: var(--color-primary);
            background: rgba(59, 130, 246, 0.06);
        }

        .drawer-nav-list .nav-arrow {
            font-size: 14px;
            color: var(--color-muted);
            opacity: 0.6;
        }

        .drawer-footer {
            margin-top: auto;
            padding-top: 24px;
            border-top: 1px solid var(--color-border);
        }

        .drawer-footer p {
            font-size: 13px;
            color: var(--color-muted);
            margin-bottom: 12px;
        }

        .drawer-footer .drawer-cta {
            display: inline-block;
            background: var(--color-primary);
            color: #fff;
            padding: 10px 20px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            text-decoration: none;
            transition: all var(--transition-fast);
        }

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

        /* Hero Section */
        .hero-section {
            padding-top: calc(var(--header-height) + 40px);
            padding-bottom: 64px;
            background-image: url('/assets/images/dae00c146b77aa00.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            position: relative;
            min-height: 85vh;
            display: flex;
            align-items: center;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(135deg, rgba(248, 250, 252, 0.95) 0%, rgba(59, 130, 246, 0.08) 55%, rgba(248, 250, 252, 0.92) 100%);
            z-index: 1;
        }

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

        .hero-content {
            max-width: 720px;
            padding: 24px 0;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(59, 130, 246, 0.08);
            color: var(--color-primary-dark);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 20px;
            margin-bottom: 20px;
            border: 1px solid rgba(59, 130, 246, 0.15);
        }

        .hero-badge .dot {
            width: 6px;
            height: 6px;
            background: var(--color-secondary);
            border-radius: 50%;
            animation: pulse-dot 2s infinite;
        }

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

        .hero-title {
            font-size: 42px;
            font-weight: 700;
            line-height: 1.25;
            color: var(--color-heading);
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }

        .hero-subtitle {
            font-size: 17px;
            line-height: 1.8;
            color: var(--color-text);
            margin-bottom: 28px;
            max-width: 640px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 28px;
        }

        .btn-primary {
            background: var(--color-primary);
            color: #fff;
            padding: 14px 28px;
            border-radius: var(--radius-btn);
            font-size: 16px;
            font-weight: 600;
            transition: all var(--transition-fast);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 4px 16px rgba(59, 130, 246, 0.25);
        }

        .btn-primary:hover {
            background: var(--color-primary-dark);
            color: #fff;
            text-decoration: none;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(59, 130, 246, 0.35);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 4px 12px rgba(59, 130, 246, 0.2);
        }

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

        .btn-secondary {
            background: #fff;
            color: var(--color-heading);
            padding: 14px 28px;
            border-radius: var(--radius-btn);
            font-size: 16px;
            font-weight: 600;
            transition: all var(--transition-fast);
            text-decoration: none;
            border: 1px solid var(--color-border);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-secondary:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
            text-decoration: none;
            transform: translateY(-2px);
            box-shadow: var(--shadow-card);
        }

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

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

        .hero-reward-box {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 20px 24px;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-card);
            max-width: 480px;
            margin-top: 12px;
        }

        .hero-reward-box h3 {
            font-size: 15px;
            font-weight: 700;
            color: var(--color-heading);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .hero-reward-box h3 .reward-icon {
            color: var(--color-secondary);
            font-size: 18px;
        }

        .hero-reward-box p {
            font-size: 14px;
            color: var(--color-text);
            line-height: 1.7;
            margin-bottom: 14px;
        }

        .progress-bar-wrap {
            background: #f1f5f9;
            border-radius: 8px;
            height: 8px;
            overflow: hidden;
            margin-bottom: 10px;
        }

        .progress-bar-fill {
            height: 100%;
            background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
            border-radius: 8px;
            transition: width 0.8s ease;
            width: 62%;
        }

        .progress-info {
            display: flex;
            justify-content: space-between;
            font-size: 13px;
            color: var(--color-muted);
        }

        .hero-data-points {
            display: flex;
            flex-wrap: wrap;
            gap: 28px;
            margin-top: 20px;
        }

        .hero-data-item {
            display: flex;
            flex-direction: column;
        }

        .hero-data-item .data-number {
            font-size: 30px;
            font-weight: 700;
            color: var(--color-heading);
            line-height: 1.2;
        }

        .hero-data-item .data-label {
            font-size: 13px;
            color: var(--color-muted);
        }

        /* Section Base */
        .section {
            padding: var(--spacing-section) 0;
        }

        .section-alt {
            background: #fff;
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
        }

        .section-header {
            max-width: 680px;
            margin-bottom: 40px;
        }

        .section-header.center {
            text-align: center;
            margin-left: auto;
            margin-right: auto;
        }

        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 700;
            color: var(--color-primary);
            text-transform: uppercase;
            letter-spacing: 1.5px;
            margin-bottom: 12px;
        }

        .section-tag .tag-line {
            display: inline-block;
            width: 24px;
            height: 2px;
            background: var(--color-secondary);
            vertical-align: middle;
            margin-right: 8px;
        }

        .section-title {
            font-size: 30px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--color-heading);
            margin-bottom: 14px;
            letter-spacing: -0.3px;
        }

        .section-desc {
            font-size: 16px;
            line-height: 1.8;
            color: var(--color-text);
        }

        /* Capability Cards (已上线能力) */
        .capability-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 20px;
        }

        .capability-card {
            background: var(--color-card-bg);
            border-radius: var(--radius-card);
            padding: 28px;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .capability-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(59, 130, 246, 0.2);
        }

        .capability-card .card-icon {
            width: 48px;
            height: 48px;
            border-radius: 10px;
            background: rgba(59, 130, 246, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            flex-shrink: 0;
        }

        .capability-card h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--color-heading);
            line-height: 1.4;
        }

        .capability-card p {
            font-size: 15px;
            line-height: 1.7;
            color: var(--color-text);
            flex-grow: 1;
        }

        .capability-card .card-meta {
            font-size: 13px;
            color: var(--color-secondary-dark);
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        /* Live Matches (进行中) */
        .match-strip {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 16px;
        }

        .match-card {
            background: var(--color-card-bg);
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-card);
            padding: 20px;
            display: flex;
            align-items: center;
            gap: 16px;
            transition: all var(--transition-base);
            cursor: pointer;
        }

        .match-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(59, 130, 246, 0.25);
        }

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

        .match-teams {
            flex: 1;
            font-size: 15px;
            font-weight: 600;
            color: var(--color-heading);
            line-height: 1.4;
        }

        .match-tag {
            font-size: 12px;
            font-weight: 700;
            color: var(--color-secondary-dark);
            background: rgba(34, 197, 94, 0.1);
            padding: 4px 10px;
            border-radius: 12px;
            white-space: nowrap;
        }

        .match-tag.live {
            background: rgba(34, 197, 94, 0.15);
            color: #16A34A;
        }

        /* Upcoming (规划中) */
        .upcoming-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 16px;
        }

        .upcoming-card {
            background: var(--color-card-bg);
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border);
            padding: 20px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
        }

        .upcoming-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }

        .upcoming-card .date {
            font-size: 13px;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 8px;
        }

        .upcoming-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--color-heading);
            line-height: 1.4;
            margin-bottom: 6px;
        }

        .upcoming-card p {
            font-size: 14px;
            color: var(--color-muted);
            line-height: 1.6;
        }

        /* Update Log (更新日志) */
        .update-timeline {
            border-left: 2px solid var(--color-border);
            padding-left: 28px;
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .update-timeline li {
            position: relative;
            padding-bottom: 4px;
        }

        .update-timeline li::before {
            content: '';
            position: absolute;
            left: -34px;
            top: 6px;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--color-primary);
            border: 2px solid #fff;
            box-shadow: 0 0 0 2px var(--color-border);
        }

        .update-timeline .update-date {
            font-size: 13px;
            font-weight: 600;
            color: var(--color-muted);
            margin-bottom: 4px;
        }

        .update-timeline h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--color-heading);
            margin-bottom: 4px;
        }

        .update-timeline p {
            font-size: 14px;
            color: var(--color-text);
            line-height: 1.7;
        }

        /* News Section */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 20px;
        }

        .news-card {
            background: var(--color-card-bg);
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }

        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }

        .news-card .news-img {
            height: 180px;
            background-size: cover;
            background-position: center;
            position: relative;
        }

        .news-card .news-img .news-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(15, 23, 42, 0.75);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 6px;
            backdrop-filter: blur(4px);
        }

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

        .news-card .news-date {
            font-size: 13px;
            color: var(--color-muted);
            font-weight: 500;
        }

        .news-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-heading);
            line-height: 1.45;
        }

        .news-card p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--color-text);
            flex-grow: 1;
        }

        .news-card .news-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-primary);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: all var(--transition-fast);
        }

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

        /* Brand Introduction */
        .brand-intro {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .brand-intro .brand-image {
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .brand-intro .brand-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            aspect-ratio: 4/3;
        }

        .brand-intro .brand-text h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--color-heading);
            line-height: 1.3;
            margin-bottom: 16px;
        }

        .brand-intro .brand-text p {
            font-size: 16px;
            line-height: 1.8;
            color: var(--color-text);
            margin-bottom: 14px;
        }

        .brand-intro .brand-text .brand-highlight {
            color: var(--color-primary-dark);
            font-weight: 600;
        }

        /* Data Stats */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 16px;
        }

        .stat-card {
            background: var(--color-card-bg);
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border);
            padding: 24px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
        }

        .stat-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }

        .stat-card .stat-number {
            font-size: 36px;
            font-weight: 700;
            color: var(--color-heading);
            line-height: 1.2;
            margin-bottom: 6px;
        }

        .stat-card .stat-label {
            font-size: 14px;
            color: var(--color-muted);
            font-weight: 500;
        }

        .stat-card .stat-change {
            display: inline-block;
            font-size: 12px;
            font-weight: 700;
            color: var(--color-secondary-dark);
            background: rgba(34, 197, 94, 0.1);
            padding: 2px 8px;
            border-radius: 8px;
            margin-top: 6px;
        }

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

        .testimonial-card {
            background: var(--color-card-bg);
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border);
            padding: 24px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .testimonial-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }

        .testimonial-card .testimonial-text {
            font-size: 15px;
            line-height: 1.8;
            color: var(--color-text);
            flex-grow: 1;
        }

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

        .testimonial-card .avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 16px;
            flex-shrink: 0;
        }

        .testimonial-card .author-info .author-name {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-heading);
        }

        .testimonial-card .author-info .author-role {
            font-size: 12px;
            color: var(--color-muted);
        }

        /* Audience Tags */
        .audience-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .audience-tag {
            background: var(--color-card-bg);
            border: 1px solid var(--color-border);
            border-radius: 24px;
            padding: 12px 20px;
            font-size: 15px;
            font-weight: 600;
            color: var(--color-heading);
            transition: all var(--transition-fast);
            cursor: default;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            box-shadow: var(--shadow-card);
        }

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

        .audience-tag .tag-emoji {
            font-size: 18px;
        }

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

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

        .faq-item:hover {
            border-color: rgba(59, 130, 246, 0.25);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 20px;
            font-size: 16px;
            font-weight: 600;
            color: var(--color-heading);
            text-align: left;
            transition: background var(--transition-fast);
            gap: 16px;
        }

        .faq-question:hover {
            background: #f8fafc;
        }

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

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 6px;
            background: rgba(59, 130, 246, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            color: var(--color-primary);
            transition: all var(--transition-fast);
        }

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

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

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding-bottom: 18px;
        }

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

        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
            padding: 64px 0;
            color: #fff;
            text-align: center;
        }

        .cta-section h2 {
            font-size: 30px;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 14px;
            color: #fff;
        }

        .cta-section p {
            font-size: 16px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.9);
            max-width: 560px;
            margin: 0 auto 28px;
        }

        .cta-form {
            display: flex;
            gap: 10px;
            max-width: 420px;
            margin: 0 auto;
            flex-wrap: wrap;
            justify-content: center;
        }

        .cta-form input {
            flex: 1;
            min-width: 240px;
            background: rgba(255, 255, 255, 0.95);
            border: 1px solid rgba(255, 255, 255, 0.3);
            color: var(--color-heading);
            font-size: 15px;
        }

        .cta-form input:focus {
            border-color: #fff;
            box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.25);
        }

        .cta-form .btn-white {
            background: #fff;
            color: var(--color-primary-dark);
            padding: 12px 24px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 700;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .cta-form .btn-white:hover {
            background: rgba(255, 255, 255, 0.9);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
        }

        .cta-form .btn-white:active {
            transform: translateY(0);
        }

        .cta-form .btn-white:focus-visible {
            outline: 2px solid #fff;
            outline-offset: 2px;
        }

        /* Footer */
        .site-footer {
            background: var(--color-footer-bg);
            color: var(--color-footer-text);
            padding: 56px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-brand .footer-logo {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .footer-brand .footer-logo .logo-icon {
            width: 32px;
            height: 32px;
            background: var(--color-primary);
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
            max-width: 280px;
        }

        .footer-col h3 {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }

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

        .footer-col ul a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            text-decoration: none;
            transition: all var(--transition-fast);
        }

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

        .footer-bottom {
            padding: 20px 0;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }

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

        .footer-bottom .footer-links a {
            color: rgba(255, 255, 255, 0.7);
            text-decoration: none;
            font-size: 14px;
            transition: all var(--transition-fast);
            font-weight: 500;
        }

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

        .footer-bottom .footer-links .separator {
            color: rgba(255, 255, 255, 0.3);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-title {
                font-size: 36px;
            }

            .section {
                padding: 64px 0;
            }

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

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

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

            .hero-section {
                min-height: 70vh;
                padding-top: calc(var(--header-height) + 24px);
                padding-bottom: 40px;
            }

            .hero-title {
                font-size: 30px;
                letter-spacing: -0.3px;
            }

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

            .hero-actions {
                flex-direction: column;
                width: 100%;
            }

            .hero-actions .btn-primary,
            .hero-actions .btn-secondary {
                width: 100%;
                justify-content: center;
                text-align: center;
            }

            .hero-reward-box {
                max-width: 100%;
            }

            .section-title {
                font-size: 24px;
            }

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

            .capability-grid,
            .match-strip,
            .upcoming-grid,
            .news-grid,
            .testimonial-grid {
                grid-template-columns: 1fr;
            }

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

            .stat-card .stat-number {
                font-size: 28px;
            }

            .drawer-nav {
                width: 100%;
                max-width: 100vw;
                right: -100vw;
            }

            .drawer-nav.open {
                right: 0;
            }

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

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

            .footer-bottom .footer-links {
                justify-content: center;
            }

            .brand-intro .brand-text h2 {
                font-size: 24px;
            }

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

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

            .cta-form {
                flex-direction: column;
                width: 100%;
                max-width: 100%;
            }

            .cta-form input,
            .cta-form .btn-white {
                width: 100%;
            }

            .btn-primary-header {
                padding: 8px 14px;
                font-size: 13px;
            }

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

            .header-logo .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 14px;
            }
        }

        @media (max-width: 520px) {
            .hero-title {
                font-size: 26px;
            }

            .hero-data-points {
                gap: 16px;
            }

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

            .hero-badge {
                font-size: 11px;
            }

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

            .drawer-nav-list a {
                font-size: 18px;
                padding: 12px 14px;
            }

            .drawer-header {
                padding: 16px 20px;
            }

            .drawer-body {
                padding: 16px 20px 32px;
            }

            .section {
                padding: 48px 0;
            }

            .news-card .news-img {
                height: 160px;
            }
        }

        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                transition-duration: 0.01ms !important;
                animation-duration: 0.01ms !important;
                transform: none !important;
            }
        }

/* roulang page: category3 */
:root {
            --color-primary: #3B82F6;
            --color-primary-light: #60A5FA;
            --color-primary-dark: #2563EB;
            --color-secondary: #22C55E;
            --color-secondary-dark: #16A34A;
            --color-bg: #F8FAFC;
            --color-card-bg: #FFFFFF;
            --color-heading: #0F172A;
            --color-text: #334155;
            --color-muted: #64748B;
            --color-border: #E2E8F0;
            --color-footer-bg: #0F172A;
            --color-footer-text: #CBD5E1;
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-input: 6px;
            --shadow-card: 0 4px 16px rgba(15, 23, 42, 0.04);
            --shadow-card-hover: 0 10px 28px rgba(15, 23, 42, 0.08);
            --shadow-overlay: 0 20px 60px rgba(15, 23, 42, 0.25);
            --font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --container-max: 1200px;
            --spacing-section: 80px;
            --spacing-section-mobile: 56px;
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --header-height: 72px;
        }
        @media (max-width: 640px) {
            :root {
                --spacing-section: 56px;
            }
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.8;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--color-primary-dark);
            text-decoration: underline;
        }
        button,
        input {
            font-family: var(--font-family);
            font-size: 16px;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        input {
            border: 1px solid var(--color-border);
            border-radius: var(--radius-input);
            padding: 12px 16px;
            font-size: 15px;
            color: var(--color-heading);
            background: #fff;
            outline: none;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
            width: 100%;
        }
        input:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
        }
        input::placeholder {
            color: #94A3B8;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--color-border);
            transition: box-shadow var(--transition-base);
        }
        .site-header.scrolled {
            box-shadow: 0 2px 16px rgba(15, 23, 42, 0.06);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .header-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 22px;
            color: var(--color-heading);
            letter-spacing: 0.5px;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        .header-logo:hover {
            color: var(--color-primary);
            text-decoration: none;
        }
        .header-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            font-weight: 800;
            flex-shrink: 0;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .btn-menu {
            width: 44px;
            height: 44px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: #fff;
            border: 1px solid var(--color-border);
            color: var(--color-heading);
            transition: all var(--transition-fast);
            flex-direction: column;
            gap: 5px;
        }
        .btn-menu:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
        }
        .btn-menu:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }
        .btn-menu span {
            display: block;
            width: 22px;
            height: 2px;
            background: currentColor;
            border-radius: 2px;
            transition: all var(--transition-fast);
        }
        .btn-primary-header {
            background: var(--color-primary);
            color: #fff;
            padding: 10px 20px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            transition: all var(--transition-fast);
            white-space: nowrap;
            display: inline-block;
            text-decoration: none;
        }
        .btn-primary-header:hover {
            background: var(--color-primary-dark);
            color: #fff;
            text-decoration: none;
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(59, 130, 246, 0.3);
        }
        .btn-primary-header:active {
            transform: translateY(0);
        }
        .drawer-overlay {
            position: fixed;
            inset: 0;
            background: rgba(15, 23, 42, 0.5);
            z-index: 998;
            opacity: 0;
            visibility: hidden;
            transition: opacity var(--transition-base), visibility var(--transition-base);
        }
        .drawer-overlay.active {
            opacity: 1;
            visibility: visible;
        }
        .drawer-nav {
            position: fixed;
            top: 0;
            right: 0;
            bottom: 0;
            width: 420px;
            max-width: 92vw;
            background: #fff;
            z-index: 999;
            box-shadow: var(--shadow-overlay);
            transform: translateX(100%);
            transition: transform var(--transition-base);
            display: flex;
            flex-direction: column;
            padding: 28px 32px;
        }
        .drawer-nav.active {
            transform: translateX(0);
        }
        .drawer-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 32px;
        }
        .drawer-header .drawer-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-heading);
        }
        .drawer-close {
            width: 40px;
            height: 40px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: #f1f5f9;
            color: var(--color-heading);
            font-size: 22px;
            transition: all var(--transition-fast);
        }
        .drawer-close:hover {
            background: #e2e8f0;
        }
        .drawer-nav ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .drawer-nav ul li a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 14px 16px;
            border-radius: 8px;
            font-size: 22px;
            font-weight: 600;
            color: var(--color-heading);
            text-decoration: none;
            transition: all var(--transition-fast);
        }
        .drawer-nav ul li a:hover {
            background: #f1f5f9;
            color: var(--color-primary);
            text-decoration: none;
        }
        .drawer-nav ul li a.active {
            color: var(--color-primary);
            background: rgba(59, 130, 246, 0.08);
        }
        .drawer-nav .drawer-cta {
            margin-top: auto;
            padding-top: 24px;
            border-top: 1px solid var(--color-border);
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .drawer-nav .drawer-cta a {
            flex: 1;
            min-width: 120px;
            text-align: center;
        }
        .btn-outline {
            background: #fff;
            color: var(--color-primary);
            padding: 12px 20px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            border: 2px solid var(--color-primary);
            transition: all var(--transition-fast);
            display: inline-block;
            text-decoration: none;
        }
        .btn-outline:hover {
            background: var(--color-primary);
            color: #fff;
            text-decoration: none;
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(59, 130, 246, 0.3);
        }
        .btn-outline:active {
            transform: translateY(0);
        }
        main {
            padding-top: var(--header-height);
        }
        .category-hero {
            background: linear-gradient(135deg, #EFF6FF 0%, #F8FAFC 55%, #F0FDF4 100%);
            padding: 48px 0 40px;
            border-bottom: 1px solid var(--color-border);
            position: relative;
            overflow: hidden;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            top: -60%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(59, 130, 246, 0.07) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .category-hero .container {
            position: relative;
            z-index: 1;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 14px;
            color: var(--color-muted);
            margin-bottom: 16px;
        }
        .breadcrumb a {
            color: var(--color-muted);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        .breadcrumb a:hover {
            color: var(--color-primary);
            text-decoration: none;
        }
        .breadcrumb .separator {
            color: #94A3B8;
        }
        .breadcrumb .current {
            color: var(--color-primary);
            font-weight: 600;
        }
        .category-hero h1 {
            font-size: 36px;
            font-weight: 700;
            color: var(--color-heading);
            line-height: 1.3;
            margin-bottom: 12px;
        }
        .category-hero .category-desc {
            font-size: 16px;
            color: var(--color-text);
            max-width: 760px;
            line-height: 1.8;
        }
        .featured-panel {
            background: var(--color-card-bg);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 0;
            margin-bottom: 40px;
            transition: box-shadow var(--transition-base);
        }
        .featured-panel:hover {
            box-shadow: var(--shadow-card-hover);
        }
        .featured-panel .featured-img {
            position: relative;
            min-height: 320px;
            overflow: hidden;
        }
        .featured-panel .featured-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            position: absolute;
            top: 0;
            left: 0;
        }
        .featured-panel .featured-content {
            padding: 32px 36px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .featured-badge {
            display: inline-block;
            background: rgba(34, 197, 94, 0.12);
            color: var(--color-secondary-dark);
            font-size: 13px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 20px;
            margin-bottom: 12px;
            align-self: flex-start;
        }
        .featured-panel .featured-content h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--color-heading);
            line-height: 1.4;
            margin-bottom: 12px;
        }
        .featured-panel .featured-content p {
            font-size: 15px;
            color: var(--color-muted);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .featured-meta {
            font-size: 13px;
            color: #94A3B8;
            margin-bottom: 18px;
        }
        .btn-read {
            background: var(--color-secondary);
            color: #fff;
            padding: 10px 22px;
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 600;
            transition: all var(--transition-fast);
            display: inline-block;
            text-decoration: none;
            align-self: flex-start;
        }
        .btn-read:hover {
            background: var(--color-secondary-dark);
            color: #fff;
            text-decoration: none;
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(34, 197, 94, 0.3);
        }
        .btn-read:active {
            transform: translateY(0);
        }
        .section-block {
            padding: 48px 0;
        }
        .section-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 28px;
            gap: 16px;
            flex-wrap: wrap;
        }
        .section-header h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--color-heading);
            display: flex;
            align-items: center;
            gap: 10px;
            line-height: 1.4;
        }
        .section-header h2::before {
            content: '';
            width: 4px;
            height: 24px;
            background: var(--color-primary);
            border-radius: 2px;
            flex-shrink: 0;
        }
        .section-header .section-tag {
            font-size: 13px;
            color: var(--color-muted);
            font-weight: 400;
        }
        .article-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
            gap: 24px;
        }
        .article-card {
            background: var(--color-card-bg);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
            border: 1px solid var(--color-border);
        }
        .article-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }
        .article-card .article-img {
            aspect-ratio: 16/9;
            overflow: hidden;
            position: relative;
            background: #f1f5f9;
        }
        .article-card .article-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-base);
        }
        .article-card:hover .article-img img {
            transform: scale(1.03);
        }
        .article-card .article-body {
            padding: 20px 22px 22px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .article-card .article-date {
            font-size: 13px;
            color: #94A3B8;
            margin-bottom: 8px;
        }
        .article-card .article-title {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-heading);
            line-height: 1.5;
            margin-bottom: 10px;
        }
        .article-card .article-excerpt {
            font-size: 14px;
            color: var(--color-muted);
            line-height: 1.7;
            margin-bottom: 16px;
            flex: 1;
        }
        .article-card .article-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-primary);
            text-decoration: none;
            transition: color var(--transition-fast);
            align-self: flex-start;
        }
        .article-card .article-link:hover {
            color: var(--color-primary-dark);
            text-decoration: underline;
        }
        .sidebar-layout {
            display: grid;
            grid-template-columns: 1fr 340px;
            gap: 32px;
            align-items: start;
        }
        .sidebar-widget {
            background: var(--color-card-bg);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border);
            padding: 24px;
            margin-bottom: 24px;
        }
        .sidebar-widget h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-heading);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-widget h3::before {
            content: '';
            width: 3px;
            height: 16px;
            background: var(--color-secondary);
            border-radius: 2px;
        }
        .hot-list {
            list-style: none;
            display: flex;
            flex-direction: column;
        }
        .hot-list li {
            padding: 10px 0;
            border-bottom: 1px solid #f1f5f9;
            font-size: 14px;
            color: var(--color-text);
        }
        .hot-list li:last-child {
            border-bottom: none;
        }
        .hot-list li a {
            color: var(--color-text);
            text-decoration: none;
            transition: color var(--transition-fast);
            display: flex;
            align-items: flex-start;
            gap: 8px;
            line-height: 1.5;
        }
        .hot-list li a:hover {
            color: var(--color-primary);
            text-decoration: none;
        }
        .hot-list li .hot-num {
            color: var(--color-primary);
            font-weight: 700;
            font-size: 13px;
            flex-shrink: 0;
            min-width: 20px;
        }
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .tag-cloud a {
            background: #f1f5f9;
            color: var(--color-text);
            padding: 5px 14px;
            border-radius: 20px;
            font-size: 13px;
            text-decoration: none;
            transition: all var(--transition-fast);
            font-weight: 500;
        }
        .tag-cloud a:hover {
            background: var(--color-primary);
            color: #fff;
            text-decoration: none;
        }
        .data-strip {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-bottom: 40px;
        }
        .data-item {
            background: var(--color-card-bg);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border);
            padding: 22px 24px;
            text-align: center;
            transition: all var(--transition-base);
        }
        .data-item:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }
        .data-item .data-value {
            font-size: 32px;
            font-weight: 700;
            color: var(--color-heading);
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .data-item .data-value .data-unit {
            font-size: 16px;
            color: var(--color-primary);
            font-weight: 600;
            margin-left: 4px;
        }
        .data-item .data-label {
            font-size: 14px;
            color: var(--color-muted);
        }
        .category-links {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
            margin-bottom: 40px;
        }
        .category-link-card {
            background: var(--color-card-bg);
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border);
            padding: 18px 20px;
            text-align: center;
            font-weight: 600;
            font-size: 15px;
            color: var(--color-heading);
            text-decoration: none;
            transition: all var(--transition-fast);
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }
        .category-link-card:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
            text-decoration: none;
            box-shadow: var(--shadow-card);
            transform: translateY(-2px);
        }
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--color-card-bg);
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border);
            padding: 18px 22px;
            transition: all var(--transition-fast);
            cursor: pointer;
        }
        .faq-item:hover {
            border-color: #bfdbfe;
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 16px;
            font-weight: 600;
            color: var(--color-heading);
            line-height: 1.5;
        }
        .faq-question .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: #f1f5f9;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-primary);
            font-size: 18px;
            font-weight: 700;
            flex-shrink: 0;
            transition: all var(--transition-fast);
        }
        .faq-item:hover .faq-icon {
            background: var(--color-primary);
            color: #fff;
        }
        .faq-answer {
            font-size: 14px;
            color: var(--color-muted);
            line-height: 1.7;
            margin-top: 10px;
            display: none;
            padding-top: 10px;
            border-top: 1px solid #f1f5f9;
        }
        .faq-item.active .faq-answer {
            display: block;
        }
        .faq-item.active .faq-icon {
            background: var(--color-primary);
            color: #fff;
            transform: rotate(45deg);
        }
        .cta-band {
            background: linear-gradient(135deg, #EFF6FF 0%, #F0FDF4 100%);
            border-radius: var(--radius-card);
            padding: 40px 36px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
            border: 1px solid var(--color-border);
        }
        .cta-band .cta-text h2 {
            font-size: 22px;
            font-weight: 700;
            color: var(--color-heading);
            margin-bottom: 6px;
        }
        .cta-band .cta-text p {
            font-size: 15px;
            color: var(--color-muted);
        }
        .cta-band .cta-form {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            max-width: 420px;
            width: 100%;
        }
        .cta-band .cta-form input {
            flex: 1;
            min-width: 200px;
        }
        .btn-subscribe {
            background: var(--color-primary);
            color: #fff;
            padding: 12px 24px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            white-space: nowrap;
            transition: all var(--transition-fast);
        }
        .btn-subscribe:hover {
            background: var(--color-primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(59, 130, 246, 0.3);
        }
        .btn-subscribe:active {
            transform: translateY(0);
        }
        .site-footer {
            background: var(--color-footer-bg);
            color: var(--color-footer-text);
            padding: 48px 0 24px;
            margin-top: 48px;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .site-footer .footer-brand .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .site-footer .footer-brand .footer-logo .logo-icon {
            width: 32px;
            height: 32px;
            background: var(--color-primary);
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 15px;
            font-weight: 800;
        }
        .site-footer .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--color-footer-text);
            max-width: 280px;
        }
        .site-footer .footer-col h3 {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
        }
        .site-footer .footer-col ul {
            list-style: none;
        }
        .site-footer .footer-col ul li {
            margin-bottom: 8px;
        }
        .site-footer .footer-col ul li a {
            color: var(--color-footer-text);
            text-decoration: none;
            font-size: 14px;
            transition: color var(--transition-fast);
        }
        .site-footer .footer-col ul li a:hover {
            color: #fff;
            text-decoration: none;
        }
        .site-footer .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            font-size: 14px;
            color: #94A3B8;
        }
        .site-footer .footer-bottom .footer-links {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .site-footer .footer-bottom .footer-links a {
            color: #94A3B8;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        .site-footer .footer-bottom .footer-links a:hover {
            color: #fff;
            text-decoration: underline;
        }
        .site-footer .footer-bottom .separator {
            color: #475569;
        }
        .btn-more {
            background: #fff;
            color: var(--color-primary);
            padding: 10px 22px;
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 600;
            border: 2px solid var(--color-primary);
            transition: all var(--transition-fast);
            display: inline-block;
            text-decoration: none;
            text-align: center;
        }
        .btn-more:hover {
            background: var(--color-primary);
            color: #fff;
            text-decoration: none;
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(59, 130, 246, 0.3);
        }
        .btn-more:active {
            transform: translateY(0);
        }
        .list-footer {
            text-align: center;
            margin-top: 24px;
        }
        @media (max-width: 1024px) {
            .featured-panel {
                grid-template-columns: 1fr;
            }
            .featured-panel .featured-img {
                min-height: 220px;
            }
            .sidebar-layout {
                grid-template-columns: 1fr;
            }
            .category-links {
                grid-template-columns: repeat(2, 1fr);
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .data-strip {
                grid-template-columns: repeat(3, 1fr);
                gap: 12px;
            }
            .data-item .data-value {
                font-size: 26px;
            }
            .article-grid {
                grid-template-columns: 1fr;
            }
            .section-header h2 {
                font-size: 22px;
            }
            .category-hero h1 {
                font-size: 28px;
            }
            .cta-band {
                padding: 28px 24px;
                flex-direction: column;
                text-align: center;
            }
            .cta-band .cta-form {
                max-width: 100%;
                justify-content: center;
            }
        }
        @media (max-width: 640px) {
            .data-strip {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .data-item {
                padding: 18px;
            }
            .category-links {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 12px;
            }
            .drawer-nav {
                width: 100vw;
                max-width: 100vw;
                padding: 22px 20px;
            }
            .btn-primary-header {
                padding: 8px 16px;
                font-size: 14px;
            }
            .featured-panel .featured-content {
                padding: 22px 20px;
            }
            .featured-panel .featured-content h2 {
                font-size: 20px;
            }
        }
        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                transition-duration: 0.01ms !important;
                animation-duration: 0.01ms !important;
            }
            html {
                scroll-behavior: auto;
            }
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }

/* roulang page: category2 */
:root {
            --color-primary: #3B82F6;
            --color-primary-light: #60A5FA;
            --color-primary-dark: #2563EB;
            --color-secondary: #22C55E;
            --color-secondary-dark: #16A34A;
            --color-bg: #F8FAFC;
            --color-card-bg: #FFFFFF;
            --color-heading: #0F172A;
            --color-text: #334155;
            --color-muted: #64748B;
            --color-border: #E2E8F0;
            --color-footer-bg: #0F172A;
            --color-footer-text: #CBD5E1;
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-input: 6px;
            --shadow-card: 0 4px 16px rgba(15, 23, 42, 0.04);
            --shadow-card-hover: 0 10px 28px rgba(15, 23, 42, 0.08);
            --shadow-overlay: 0 20px 60px rgba(15, 23, 42, 0.25);
            --font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --container-max: 1200px;
            --spacing-section: 80px;
            --spacing-section-mobile: 56px;
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --header-height: 72px;
        }

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

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

        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.8;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
        }

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

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

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

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

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

        input {
            border: 1px solid var(--color-border);
            border-radius: var(--radius-input);
            padding: 12px 16px;
            font-size: 15px;
            color: var(--color-heading);
            background: #fff;
            outline: none;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
            width: 100%;
        }

        input:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
        }

        input::placeholder {
            color: #94A3B8;
        }

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

        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--color-border);
            transition: box-shadow var(--transition-base);
        }

        .site-header.scrolled {
            box-shadow: 0 2px 16px rgba(15, 23, 42, 0.06);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .header-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 22px;
            color: var(--color-heading);
            letter-spacing: 0.5px;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

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

        .header-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            font-weight: 800;
            flex-shrink: 0;
        }

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

        .btn-menu {
            width: 44px;
            height: 44px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: #fff;
            border: 1px solid var(--color-border);
            color: var(--color-heading);
            transition: all var(--transition-fast);
            flex-direction: column;
            gap: 5px;
        }

        .btn-menu:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
        }

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

        .btn-menu span {
            display: block;
            width: 22px;
            height: 2px;
            background: currentColor;
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        .btn-primary-header {
            background: var(--color-primary);
            color: #fff;
            padding: 10px 20px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            transition: all var(--transition-fast);
            white-space: nowrap;
            text-decoration: none;
        }

        .btn-primary-header:hover {
            background: var(--color-primary-dark);
            color: #fff;
            text-decoration: none;
            box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
        }

        .drawer-overlay {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(15, 23, 42, 0.5);
            z-index: 1500;
            opacity: 0;
            pointer-events: none;
            transition: opacity var(--transition-base);
        }

        .drawer-overlay.active {
            opacity: 1;
            pointer-events: auto;
        }

        .drawer-panel {
            position: fixed;
            top: 0;
            right: -460px;
            width: 420px;
            max-width: 100vw;
            height: 100%;
            background: #fff;
            z-index: 1600;
            transition: right var(--transition-base);
            display: flex;
            flex-direction: column;
            box-shadow: var(--shadow-overlay);
            overflow-y: auto;
        }

        .drawer-panel.active {
            right: 0;
        }

        .drawer-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            border-bottom: 1px solid var(--color-border);
            flex-shrink: 0;
        }

        .drawer-header .drawer-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-heading);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .drawer-header .drawer-title .logo-icon {
            width: 32px;
            height: 32px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 16px;
            font-weight: 800;
        }

        .btn-close-menu {
            width: 40px;
            height: 40px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: #f1f5f9;
            border: none;
            color: var(--color-heading);
            font-size: 22px;
            transition: all var(--transition-fast);
            font-weight: 600;
        }

        .btn-close-menu:hover {
            background: #e2e8f0;
            color: var(--color-primary);
        }

        .drawer-nav {
            padding: 24px;
            display: flex;
            flex-direction: column;
            gap: 6px;
            flex: 1;
        }

        .drawer-nav a {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 16px;
            font-size: 20px;
            font-weight: 600;
            color: var(--color-heading);
            border-radius: 8px;
            transition: all var(--transition-fast);
            text-decoration: none;
            letter-spacing: 0.3px;
        }

        .drawer-nav a:hover {
            background: #f1f5f9;
            color: var(--color-primary);
            text-decoration: none;
            padding-left: 22px;
        }

        .drawer-nav a.active {
            background: #eff6ff;
            color: var(--color-primary);
        }

        .drawer-nav a .nav-arrow {
            font-size: 18px;
            color: #94a3b8;
        }

        .drawer-nav a.active .nav-arrow {
            color: var(--color-primary);
        }

        .drawer-footer {
            padding: 20px 24px;
            border-top: 1px solid var(--color-border);
            flex-shrink: 0;
        }

        .drawer-footer .drawer-subscribe-btn {
            display: block;
            text-align: center;
            background: var(--color-primary);
            color: #fff;
            padding: 14px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 16px;
            text-decoration: none;
            transition: all var(--transition-fast);
        }

        .drawer-footer .drawer-subscribe-btn:hover {
            background: var(--color-primary-dark);
            color: #fff;
            text-decoration: none;
        }

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

        .page-header {
            background: linear-gradient(180deg, #eff6ff 0%, #f8fafc 100%);
            border-bottom: 1px solid var(--color-border);
            padding: 40px 0 32px;
            position: relative;
            overflow: hidden;
        }

        .page-header::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -40px;
            width: 240px;
            height: 240px;
            border-radius: 50%;
            background: rgba(59, 130, 246, 0.06);
            pointer-events: none;
        }

        .page-header::after {
            content: '';
            position: absolute;
            bottom: -80px;
            left: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(34, 197, 94, 0.05);
            pointer-events: none;
        }

        .breadcrumb {
            font-size: 14px;
            color: var(--color-muted);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }

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

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

        .breadcrumb .separator {
            color: #94a3b8;
        }

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

        .page-header h1 {
            font-size: 36px;
            font-weight: 700;
            color: var(--color-heading);
            letter-spacing: 0.5px;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }

        .page-header .page-desc {
            font-size: 16px;
            color: var(--color-text);
            line-height: 1.8;
            max-width: 720px;
            position: relative;
            z-index: 1;
        }

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

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: #eff6ff;
            color: var(--color-primary);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 20px;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--color-heading);
            letter-spacing: 0.5px;
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--color-muted);
            line-height: 1.8;
            max-width: 680px;
            margin-bottom: 32px;
        }

        .featured-post {
            background: var(--color-card-bg);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition-base), transform var(--transition-base);
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 0;
            margin-bottom: 48px;
        }

        .featured-post:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }

        .featured-post .featured-image {
            min-height: 320px;
            background-size: cover;
            background-position: center;
            position: relative;
        }

        .featured-post .featured-image .image-tag {
            position: absolute;
            top: 16px;
            left: 16px;
            background: var(--color-secondary);
            color: #fff;
            font-size: 13px;
            font-weight: 600;
            padding: 5px 14px;
            border-radius: 20px;
            letter-spacing: 0.3px;
        }

        .featured-post .featured-content {
            padding: 32px 36px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .featured-post .featured-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--color-muted);
            margin-bottom: 12px;
        }

        .featured-post .featured-meta .date-icon {
            color: var(--color-primary);
        }

        .featured-post h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--color-heading);
            margin-bottom: 12px;
            line-height: 1.5;
        }

        .featured-post p {
            font-size: 15px;
            color: var(--color-text);
            line-height: 1.8;
            margin-bottom: 20px;
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: var(--color-primary);
            border: 1.5px solid var(--color-primary);
            padding: 10px 22px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            transition: all var(--transition-fast);
            text-decoration: none;
        }

        .btn-outline:hover {
            background: var(--color-primary);
            color: #fff;
            text-decoration: none;
            box-shadow: 0 4px 12px rgba(59, 130, 246, 0.22);
        }

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

        .content-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 40px;
            align-items: start;
        }

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

        .article-card {
            background: var(--color-card-bg);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition-base), transform var(--transition-base);
            display: flex;
            flex-direction: column;
        }

        .article-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }

        .article-card .article-image {
            aspect-ratio: 16 / 9;
            background-size: cover;
            background-position: center;
        }

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

        .article-card .article-date {
            font-size: 13px;
            color: var(--color-muted);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .article-card .article-date svg {
            width: 14px;
            height: 14px;
            color: var(--color-primary);
        }

        .article-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--color-heading);
            margin-bottom: 8px;
            line-height: 1.5;
        }

        .article-card .article-excerpt {
            font-size: 14px;
            color: var(--color-muted);
            line-height: 1.7;
            margin-bottom: 16px;
            flex: 1;
        }

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

        .btn-read-more:hover {
            color: var(--color-primary-dark);
            gap: 10px;
            text-decoration: none;
        }

        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .sidebar-card {
            background: var(--color-card-bg);
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: var(--shadow-card);
        }

        .sidebar-card .sidebar-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--color-heading);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
            letter-spacing: 0.3px;
        }

        .sidebar-card .sidebar-title::before {
            content: '';
            width: 4px;
            height: 18px;
            background: var(--color-primary);
            border-radius: 2px;
        }

        .hot-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .hot-list li {
            border-bottom: 1px solid #f1f5f9;
        }

        .hot-list li:last-child {
            border-bottom: none;
        }

        .hot-list a {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 10px 8px;
            font-size: 14px;
            color: var(--color-text);
            text-decoration: none;
            transition: all var(--transition-fast);
            border-radius: 6px;
        }

        .hot-list a:hover {
            background: #f8fafc;
            color: var(--color-primary);
            text-decoration: none;
            padding-left: 14px;
        }

        .hot-list .rank {
            font-size: 16px;
            font-weight: 800;
            color: #94a3b8;
            width: 28px;
            flex-shrink: 0;
        }

        .hot-list .rank.top-1 {
            color: #f59e0b;
        }

        .hot-list .rank.top-2 {
            color: #94a3b8;
        }

        .hot-list .rank.top-3 {
            color: #b45309;
        }

        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .tag-cloud .tag {
            display: inline-block;
            background: #f1f5f9;
            color: var(--color-text);
            font-size: 13px;
            padding: 5px 14px;
            border-radius: 20px;
            transition: all var(--transition-fast);
            text-decoration: none;
            border: 1px solid transparent;
        }

        .tag-cloud .tag:hover {
            background: #eff6ff;
            color: var(--color-primary);
            border-color: var(--color-primary-light);
            text-decoration: none;
        }

        .data-strip {
            background: var(--color-card-bg);
            border-radius: var(--radius-card);
            padding: 28px 32px;
            box-shadow: var(--shadow-card);
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .data-item {
            text-align: center;
            padding: 8px;
        }

        .data-item .data-number {
            font-size: 32px;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1.2;
            margin-bottom: 4px;
        }

        .data-item .data-number.green {
            color: var(--color-secondary);
        }

        .data-item .data-label {
            font-size: 14px;
            color: var(--color-muted);
        }

        .related-categories {
            background: var(--color-card-bg);
            border-radius: var(--radius-card);
            padding: 32px;
            box-shadow: var(--shadow-card);
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
            margin-top: 20px;
        }

        .related-cat-link {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 18px;
            background: #f8fafc;
            border-radius: 8px;
            font-weight: 600;
            color: var(--color-heading);
            text-decoration: none;
            transition: all var(--transition-fast);
            font-size: 15px;
            border: 1px solid var(--color-border);
        }

        .related-cat-link:hover {
            background: #eff6ff;
            color: var(--color-primary);
            border-color: var(--color-primary-light);
            text-decoration: none;
            transform: translateY(-2px);
        }

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

        .faq-item {
            background: var(--color-card-bg);
            border-radius: var(--radius-card);
            padding: 20px 24px;
            box-shadow: var(--shadow-card);
            border-left: 4px solid var(--color-primary);
        }

        .faq-item .faq-question {
            font-size: 17px;
            font-weight: 600;
            color: var(--color-heading);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .faq-item .faq-question .q-icon {
            color: var(--color-primary);
            font-weight: 800;
            flex-shrink: 0;
        }

        .faq-item .faq-answer {
            font-size: 14px;
            color: var(--color-muted);
            line-height: 1.7;
            padding-left: 26px;
        }

        .subscribe-cta {
            background: linear-gradient(135deg, #eff6ff 0%, #f0fdf4 100%);
            border-radius: var(--radius-card);
            padding: 48px 40px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border);
            text-align: center;
        }

        .subscribe-cta h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--color-heading);
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        .subscribe-cta p {
            font-size: 15px;
            color: var(--color-muted);
            margin-bottom: 24px;
            max-width: 480px;
            margin-left: auto;
            margin-right: auto;
        }

        .subscribe-form {
            display: flex;
            gap: 12px;
            max-width: 420px;
            margin: 0 auto;
        }

        .subscribe-form input {
            flex: 1;
        }

        .btn-subscribe {
            background: var(--color-secondary);
            color: #fff;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .btn-subscribe:hover {
            background: var(--color-secondary-dark);
            box-shadow: 0 4px 12px rgba(34, 197, 94, 0.25);
            color: #fff;
        }

        .btn-load-more {
            display: block;
            margin: 32px auto 0;
            background: var(--color-card-bg);
            color: var(--color-primary);
            border: 1.5px solid var(--color-primary);
            padding: 14px 36px;
            border-radius: var(--radius-btn);
            font-size: 16px;
            font-weight: 600;
            transition: all var(--transition-fast);
            text-decoration: none;
        }

        .btn-load-more:hover {
            background: var(--color-primary);
            color: #fff;
            text-decoration: none;
            box-shadow: 0 6px 18px rgba(59, 130, 246, 0.25);
        }

        .site-footer {
            background: var(--color-footer-bg);
            color: var(--color-footer-text);
            padding: 56px 0 28px;
            margin-top: 80px;
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .site-footer .footer-brand .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 20px;
            color: #fff;
            margin-bottom: 16px;
        }

        .site-footer .footer-brand .footer-logo .logo-icon {
            width: 34px;
            height: 34px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 17px;
            font-weight: 800;
        }

        .site-footer .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: var(--color-footer-text);
            max-width: 300px;
        }

        .site-footer .footer-col h3 {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }

        .site-footer .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

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

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

        .site-footer .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 28px;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 14px;
        }

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

        .site-footer .footer-bottom .footer-links a {
            color: var(--color-footer-text);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

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

        .site-footer .footer-bottom .separator {
            color: #475569;
        }

        @media (max-width: 1024px) {
            :root {
                --spacing-section: 64px;
            }

            .content-layout {
                grid-template-columns: 1fr;
            }

            .sidebar {
                order: 2;
            }

            .article-list {
                order: 1;
            }

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

            .featured-post {
                grid-template-columns: 1fr;
            }

            .featured-post .featured-image {
                min-height: 220px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --spacing-section: 48px;
            }

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

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

            .data-strip {
                grid-template-columns: 1fr;
                gap: 12px;
                padding: 24px;
            }

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

            .subscribe-form {
                flex-direction: column;
            }

            .btn-subscribe {
                width: 100%;
            }

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

            .btn-primary-header {
                display: none;
            }

            .drawer-panel {
                width: 100%;
                right: -100%;
            }

            .drawer-panel.active {
                right: 0;
            }

            .featured-post .featured-content {
                padding: 24px;
            }
        }

        @media (max-width: 520px) {
            .page-header h1 {
                font-size: 24px;
            }

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

            .featured-post .featured-image {
                min-height: 180px;
            }

            .featured-post h3 {
                font-size: 18px;
            }

            .article-card .article-body {
                padding: 16px 18px 18px;
            }

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

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

            html {
                scroll-behavior: auto;
            }
        }

/* roulang page: category1 */
:root {
            --color-primary: #3B82F6;
            --color-primary-light: #60A5FA;
            --color-primary-dark: #2563EB;
            --color-secondary: #22C55E;
            --color-secondary-dark: #16A34A;
            --color-bg: #F8FAFC;
            --color-card-bg: #FFFFFF;
            --color-heading: #0F172A;
            --color-text: #334155;
            --color-muted: #64748B;
            --color-border: #E2E8F0;
            --color-footer-bg: #0F172A;
            --color-footer-text: #CBD5E1;
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-input: 6px;
            --shadow-card: 0 4px 16px rgba(15, 23, 42, 0.04);
            --shadow-card-hover: 0 10px 28px rgba(15, 23, 42, 0.08);
            --shadow-overlay: 0 20px 60px rgba(15, 23, 42, 0.25);
            --font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --container-max: 1200px;
            --spacing-section: 80px;
            --spacing-section-mobile: 56px;
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --header-height: 72px;
        }

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

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

        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.8;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            padding-top: var(--header-height);
        }

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

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

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

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

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

        input {
            border: 1px solid var(--color-border);
            border-radius: var(--radius-input);
            padding: 12px 16px;
            font-size: 15px;
            color: var(--color-heading);
            background: #fff;
            outline: none;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
            width: 100%;
        }

        input:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
        }

        input::placeholder {
            color: #94A3B8;
        }

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

        /* Header */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--color-border);
            transition: box-shadow var(--transition-base);
        }

        .site-header.scrolled {
            box-shadow: 0 2px 16px rgba(15, 23, 42, 0.06);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .header-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 22px;
            color: var(--color-heading);
            letter-spacing: 0.5px;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

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

        .header-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            font-weight: 800;
            flex-shrink: 0;
        }

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

        .btn-menu {
            width: 44px;
            height: 44px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: #fff;
            border: 1px solid var(--color-border);
            color: var(--color-heading);
            transition: all var(--transition-fast);
            flex-direction: column;
            gap: 5px;
        }

        .btn-menu:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
        }

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

        .btn-menu span {
            display: block;
            width: 22px;
            height: 2px;
            background: currentColor;
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        .btn-primary-header {
            background: var(--color-primary);
            color: #fff;
            padding: 10px 20px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            transition: all var(--transition-fast);
            white-space: nowrap;
            text-decoration: none;
            display: inline-block;
        }

        .btn-primary-header:hover {
            background: var(--color-primary-dark);
            color: #fff;
            text-decoration: none;
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
        }

        .btn-primary-header:active {
            transform: translateY(1px);
            box-shadow: none;
        }

        /* Drawer Nav */
        .drawer-overlay {
            position: fixed;
            inset: 0;
            background: rgba(15, 23, 42, 0.5);
            z-index: 1001;
            opacity: 0;
            visibility: hidden;
            transition: opacity var(--transition-base), visibility var(--transition-base);
        }

        .drawer-overlay.active {
            opacity: 1;
            visibility: visible;
        }

        .drawer-nav {
            position: fixed;
            top: 0;
            right: -460px;
            width: 100%;
            max-width: 460px;
            height: 100vh;
            background: #fff;
            z-index: 1002;
            box-shadow: var(--shadow-overlay);
            transition: right var(--transition-base);
            display: flex;
            flex-direction: column;
            padding: 24px 32px 32px;
            overflow-y: auto;
        }

        .drawer-nav.active {
            right: 0;
        }

        .drawer-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-bottom: 20px;
            border-bottom: 1px solid var(--color-border);
            margin-bottom: 28px;
        }

        .drawer-title {
            font-size: 24px;
            font-weight: 700;
            color: var(--color-heading);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .drawer-title .logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            font-weight: 800;
        }

        .btn-drawer-close {
            width: 40px;
            height: 40px;
            border-radius: 8px;
            border: 1px solid var(--color-border);
            background: #fff;
            color: var(--color-heading);
            font-size: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all var(--transition-fast);
        }

        .btn-drawer-close:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
            background: #f0f7ff;
        }

        .drawer-menu {
            display: flex;
            flex-direction: column;
            gap: 6px;
            flex: 1;
        }

        .drawer-link {
            display: block;
            padding: 14px 18px;
            font-size: 22px;
            font-weight: 600;
            color: var(--color-heading);
            border-radius: 8px;
            transition: all var(--transition-fast);
            text-decoration: none;
            position: relative;
        }

        .drawer-link:hover {
            background: #f0f7ff;
            color: var(--color-primary);
            text-decoration: none;
            padding-left: 24px;
        }

        .drawer-link.active {
            background: #f0f7ff;
            color: var(--color-primary);
            border-left: 3px solid var(--color-primary);
            padding-left: 18px;
        }

        .drawer-footer {
            padding-top: 20px;
            border-top: 1px solid var(--color-border);
            margin-top: 20px;
        }

        .drawer-footer .btn-primary-header {
            display: block;
            text-align: center;
            padding: 14px 20px;
            font-size: 16px;
        }

        /* Breadcrumb & Page Header */
        .page-header {
            background: linear-gradient(180deg, #EFF6FF 0%, #F8FAFC 100%);
            padding: 48px 0 40px;
            border-bottom: 1px solid var(--color-border);
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--color-muted);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }

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

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

        .breadcrumb .separator {
            color: #94A3B8;
            user-select: none;
        }

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

        .page-header h1 {
            font-size: 36px;
            font-weight: 700;
            color: var(--color-heading);
            line-height: 1.3;
            margin-bottom: 12px;
            letter-spacing: 0.3px;
        }

        .page-header .page-desc {
            font-size: 16px;
            color: var(--color-text);
            max-width: 720px;
            line-height: 1.8;
        }

        /* Featured Card */
        .featured-section {
            padding: 48px 0 0;
        }

        .featured-card {
            display: grid;
            grid-template-columns: 1.1fr 1fr;
            background: var(--color-card-bg);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border);
            transition: box-shadow var(--transition-base);
        }

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

        .featured-image {
            position: relative;
            min-height: 320px;
            overflow: hidden;
        }

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

        .featured-card:hover .featured-image img {
            transform: scale(1.02);
        }

        .featured-badge {
            position: absolute;
            top: 20px;
            left: 20px;
            background: var(--color-secondary);
            color: #fff;
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.5px;
        }

        .featured-content {
            padding: 32px 36px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            gap: 14px;
        }

        .featured-content .featured-date {
            font-size: 14px;
            color: var(--color-muted);
        }

        .featured-content h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--color-heading);
            line-height: 1.4;
        }

        .featured-content p {
            font-size: 15px;
            color: var(--color-text);
            line-height: 1.8;
        }

        .btn-read {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--color-primary);
            color: #fff;
            padding: 10px 22px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            transition: all var(--transition-fast);
            text-decoration: none;
            width: fit-content;
        }

        .btn-read:hover {
            background: var(--color-primary-dark);
            color: #fff;
            text-decoration: none;
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
        }

        .btn-read:active {
            transform: translateY(1px);
            box-shadow: none;
        }

        .btn-read-outline {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: transparent;
            color: var(--color-primary);
            padding: 10px 22px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            transition: all var(--transition-fast);
            text-decoration: none;
            border: 1.5px solid var(--color-primary);
            width: fit-content;
        }

        .btn-read-outline:hover {
            background: #f0f7ff;
            color: var(--color-primary-dark);
            text-decoration: none;
            border-color: var(--color-primary-dark);
        }

        /* Main Layout */
        .main-content {
            padding: 48px 0 72px;
        }

        .main-grid {
            display: grid;
            grid-template-columns: 1fr 340px;
            gap: 32px;
            align-items: start;
        }

        /* Article List */
        .article-list {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .list-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 8px;
        }

        .list-header h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--color-heading);
        }

        .list-header .count {
            font-size: 14px;
            color: var(--color-muted);
            background: #EEF2F7;
            padding: 4px 12px;
            border-radius: 20px;
        }

        .article-card {
            display: grid;
            grid-template-columns: 240px 1fr;
            background: var(--color-card-bg);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border);
            transition: all var(--transition-base);
            cursor: pointer;
        }

        .article-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }

        .article-card .article-image {
            min-height: 160px;
            overflow: hidden;
            background: #E2E8F0;
        }

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

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

        .article-card .article-body {
            padding: 20px 24px;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .article-card .article-meta {
            font-size: 13px;
            color: var(--color-muted);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .article-card .article-meta .dot {
            width: 4px;
            height: 4px;
            background: #94A3B8;
            border-radius: 50%;
            display: inline-block;
        }

        .article-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-heading);
            line-height: 1.5;
        }

        .article-card h3 a {
            color: var(--color-heading);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        .article-card h3 a:hover {
            color: var(--color-primary);
            text-decoration: none;
        }

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

        .article-card .btn-read-mini {
            align-self: flex-start;
            background: transparent;
            color: var(--color-primary);
            padding: 6px 0;
            font-size: 14px;
            font-weight: 600;
            transition: all var(--transition-fast);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .article-card .btn-read-mini:hover {
            color: var(--color-primary-dark);
            text-decoration: underline;
        }

        .btn-more {
            display: flex;
            justify-content: center;
            margin-top: 16px;
        }

        .btn-more a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #fff;
            color: var(--color-primary);
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            border: 1.5px solid var(--color-primary);
            transition: all var(--transition-fast);
            text-decoration: none;
        }

        .btn-more a:hover {
            background: #f0f7ff;
            color: var(--color-primary-dark);
            text-decoration: none;
            border-color: var(--color-primary-dark);
            transform: translateY(-1px);
        }

        /* Sidebar */
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }

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

        .sidebar-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-heading);
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--color-border);
        }

        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .tag {
            display: inline-block;
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
            background: #F1F5F9;
            color: var(--color-text);
            border: 1px solid var(--color-border);
            transition: all var(--transition-fast);
            text-decoration: none;
            cursor: pointer;
        }

        .tag:hover {
            background: #f0f7ff;
            color: var(--color-primary);
            border-color: var(--color-primary-light);
            text-decoration: none;
        }

        .hot-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 0;
        }

        .hot-list li {
            padding: 12px 0;
            border-bottom: 1px solid #F1F5F9;
            display: flex;
            align-items: flex-start;
            gap: 12px;
            transition: background var(--transition-fast);
        }

        .hot-list li:last-child {
            border-bottom: none;
        }

        .hot-list li:hover {
            background: #FAFBFC;
        }

        .hot-num {
            font-size: 20px;
            font-weight: 700;
            color: #CBD5E1;
            line-height: 1.2;
            width: 28px;
            flex-shrink: 0;
            text-align: center;
        }

        .hot-list li:nth-child(1) .hot-num {
            color: var(--color-primary);
        }

        .hot-list li:nth-child(2) .hot-num {
            color: var(--color-primary-light);
        }

        .hot-list li:nth-child(3) .hot-num {
            color: #93C5FD;
        }

        .hot-list .hot-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text);
            text-decoration: none;
            transition: color var(--transition-fast);
            line-height: 1.5;
        }

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

        /* Data Strip */
        .data-section {
            padding: 48px 0 0;
        }

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

        .data-item {
            background: var(--color-card-bg);
            border-radius: var(--radius-card);
            padding: 24px 22px;
            text-align: center;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border);
            transition: all var(--transition-base);
        }

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

        .data-number {
            font-size: 32px;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1.3;
            margin-bottom: 4px;
        }

        .data-number .unit {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-muted);
            margin-left: 2px;
        }

        .data-label {
            font-size: 14px;
            color: var(--color-muted);
        }

        /* Related Categories */
        .related-section {
            padding: 48px 0 0;
        }

        .related-section .section-title {
            font-size: 24px;
            font-weight: 700;
            color: var(--color-heading);
            margin-bottom: 20px;
        }

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

        .related-cat-card {
            display: block;
            background: var(--color-card-bg);
            border-radius: var(--radius-card);
            padding: 20px 16px;
            text-align: center;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border);
            transition: all var(--transition-base);
            text-decoration: none;
            font-weight: 600;
            font-size: 16px;
            color: var(--color-heading);
        }

        .related-cat-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
            color: var(--color-primary);
            text-decoration: none;
            border-color: var(--color-primary-light);
        }

        .related-cat-card .cat-icon {
            display: block;
            font-size: 28px;
            margin-bottom: 8px;
        }

        /* FAQ */
        .faq-section {
            padding: 48px 0 0;
        }

        .section-title {
            font-size: 24px;
            font-weight: 700;
            color: var(--color-heading);
            margin-bottom: 20px;
        }

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .faq-item {
            background: var(--color-card-bg);
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border);
            overflow: hidden;
            transition: all var(--transition-base);
        }

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

        .faq-question {
            width: 100%;
            padding: 18px 22px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            text-align: left;
            background: none;
            color: var(--color-heading);
            font-size: 16px;
            font-weight: 600;
            transition: color var(--transition-fast);
            cursor: pointer;
        }

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

        .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-muted);
            font-size: 20px;
            transition: transform var(--transition-fast);
        }

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

        .faq-answer {
            display: none;
            padding: 0 22px 18px;
            font-size: 14px;
            color: var(--color-text);
            line-height: 1.7;
        }

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

        /* CTA */
        .cta-section {
            padding: 48px 0 72px;
        }

        .cta-box {
            background: linear-gradient(135deg, #EFF6FF 0%, #F8FAFC 100%);
            border-radius: var(--radius-card);
            padding: 48px 40px;
            text-align: center;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-card);
        }

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

        .cta-box p {
            font-size: 15px;
            color: var(--color-muted);
            margin-bottom: 24px;
            max-width: 480px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-form {
            display: flex;
            gap: 10px;
            max-width: 420px;
            margin: 0 auto;
            flex-wrap: wrap;
            justify-content: center;
        }

        .cta-form input {
            flex: 1;
            min-width: 220px;
            max-width: 300px;
        }

        .cta-form button {
            background: var(--color-primary);
            color: #fff;
            padding: 12px 24px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .cta-form button:hover {
            background: var(--color-primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
        }

        .cta-form button:active {
            transform: translateY(1px);
            box-shadow: none;
        }

        /* Footer */
        .site-footer {
            background: var(--color-footer-bg);
            color: var(--color-footer-text);
            padding: 56px 0 28px;
        }

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

        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            margin-top: 14px;
            color: #94A3B8;
            max-width: 300px;
        }

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 20px;
            color: #fff;
        }

        .footer-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            font-weight: 800;
        }

        .footer-col h3 {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-col a {
            color: #94A3B8;
            text-decoration: none;
            transition: color var(--transition-fast);
            font-size: 14px;
        }

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

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 14px;
            color: #64748B;
            flex-wrap: wrap;
            gap: 12px;
        }

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

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

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

        .footer-links .separator {
            color: #475569;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .main-grid {
                grid-template-columns: 1fr 280px;
                gap: 24px;
            }
            .featured-card {
                grid-template-columns: 1fr;
            }
            .featured-image {
                min-height: 240px;
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .data-strip {
                grid-template-columns: repeat(3, 1fr);
                gap: 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --spacing-section: 48px;
            }
            .page-header {
                padding: 32px 0 28px;
            }
            .page-header h1 {
                font-size: 28px;
            }
            .main-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .sidebar {
                order: 2;
            }
            .article-list {
                order: 1;
            }
            .article-card {
                grid-template-columns: 180px 1fr;
            }
            .article-card .article-body {
                padding: 16px 18px;
            }
            .featured-content {
                padding: 24px 22px;
            }
            .featured-content h2 {
                font-size: 22px;
            }
            .data-strip {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .cta-box {
                padding: 32px 22px;
            }
            .drawer-nav {
                max-width: 100%;
                right: -100%;
            }
            .btn-primary-header {
                padding: 8px 14px;
                font-size: 13px;
            }
            .header-logo {
                font-size: 18px;
            }
            .header-logo .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 15px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 520px) {
            .page-header h1 {
                font-size: 24px;
            }
            .article-card {
                grid-template-columns: 1fr;
            }
            .article-card .article-image {
                min-height: 180px;
            }
            .featured-image {
                min-height: 200px;
            }
            .featured-content {
                padding: 20px 18px;
            }
            .featured-content h2 {
                font-size: 20px;
            }
            .related-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .related-cat-card {
                padding: 14px 10px;
                font-size: 14px;
            }
            .related-cat-card .cat-icon {
                font-size: 22px;
            }
            .cta-form {
                flex-direction: column;
                align-items: center;
            }
            .cta-form input {
                width: 100%;
                max-width: 100%;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
        }

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

/* roulang page: category4 */
:root {
            --color-primary: #3B82F6;
            --color-primary-light: #60A5FA;
            --color-primary-dark: #2563EB;
            --color-secondary: #22C55E;
            --color-secondary-dark: #16A34A;
            --color-bg: #F8FAFC;
            --color-card-bg: #FFFFFF;
            --color-heading: #0F172A;
            --color-text: #334155;
            --color-muted: #64748B;
            --color-border: #E2E8F0;
            --color-footer-bg: #0F172A;
            --color-footer-text: #CBD5E1;
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-input: 6px;
            --shadow-card: 0 4px 16px rgba(15, 23, 42, 0.04);
            --shadow-card-hover: 0 10px 28px rgba(15, 23, 42, 0.08);
            --shadow-overlay: 0 20px 60px rgba(15, 23, 42, 0.25);
            --font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --container-max: 1200px;
            --spacing-section: 80px;
            --spacing-section-mobile: 56px;
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --header-height: 72px;
        }

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

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

        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.8;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            margin: 0;
            padding-top: var(--header-height);
        }

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

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

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

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

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

        input {
            border: 1px solid var(--color-border);
            border-radius: var(--radius-input);
            padding: 12px 16px;
            font-size: 15px;
            color: var(--color-heading);
            background: #fff;
            outline: none;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
            width: 100%;
        }

        input:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
        }

        input::placeholder {
            color: #94A3B8;
        }

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

        /* Header */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--color-border);
            transition: box-shadow var(--transition-base);
        }

        .site-header.scrolled {
            box-shadow: 0 2px 16px rgba(15, 23, 42, 0.06);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .header-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 22px;
            color: var(--color-heading);
            letter-spacing: 0.5px;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

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

        .header-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            font-weight: 800;
            flex-shrink: 0;
        }

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

        .btn-menu {
            width: 44px;
            height: 44px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: #fff;
            border: 1px solid var(--color-border);
            color: var(--color-heading);
            transition: all var(--transition-fast);
            flex-direction: column;
            gap: 5px;
        }

        .btn-menu:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
        }

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

        .btn-menu span {
            display: block;
            width: 22px;
            height: 2px;
            background: currentColor;
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        .btn-primary-header {
            background: var(--color-primary);
            color: #fff;
            padding: 10px 20px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .btn-primary-header:hover {
            background: var(--color-primary-dark);
            color: #fff;
            text-decoration: none;
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(59, 130, 246, 0.35);
        }

        .btn-primary-header:active {
            transform: translateY(1px);
            box-shadow: none;
        }

        /* Drawer Navigation */
        .drawer-overlay {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(15, 23, 42, 0.45);
            z-index: 1100;
            opacity: 0;
            pointer-events: none;
            transition: opacity var(--transition-base);
        }

        .drawer-overlay.active {
            opacity: 1;
            pointer-events: auto;
        }

        .drawer-nav {
            position: fixed;
            top: 0;
            right: 0;
            bottom: 0;
            width: 420px;
            max-width: 90vw;
            background: #fff;
            z-index: 1200;
            padding: 24px 32px;
            transform: translateX(100%);
            transition: transform var(--transition-base);
            box-shadow: var(--shadow-overlay);
            display: flex;
            flex-direction: column;
            overflow-y: auto;
        }

        .drawer-nav.active {
            transform: translateX(0);
        }

        .drawer-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 32px;
            padding-bottom: 16px;
            border-bottom: 1px solid var(--color-border);
        }

        .drawer-close {
            width: 40px;
            height: 40px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: var(--color-heading);
            background: #fff;
            border: 1px solid var(--color-border);
            transition: all var(--transition-fast);
        }

        .drawer-close:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
        }

        .drawer-nav-list {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .drawer-nav-list li a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 14px 16px;
            border-radius: 10px;
            font-size: 22px;
            font-weight: 600;
            color: var(--color-heading);
            text-decoration: none;
            transition: all var(--transition-fast);
        }

        .drawer-nav-list li a:hover {
            background: #F1F5F9;
            color: var(--color-primary);
            text-decoration: none;
            transform: translateX(4px);
        }

        .drawer-nav-list li a.active {
            background: #EFF6FF;
            color: var(--color-primary);
        }

        .drawer-nav-list li a .nav-indicator {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--color-secondary);
            flex-shrink: 0;
        }

        .drawer-footer {
            margin-top: auto;
            padding-top: 24px;
            border-top: 1px solid var(--color-border);
            font-size: 14px;
            color: var(--color-muted);
        }

        /* Breadcrumb */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--color-muted);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }

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

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

        .breadcrumb .separator {
            color: #94A3B8;
        }

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

        /* Category Header */
        .category-header {
            background: linear-gradient(135deg, #F0F7FF 0%, #E8F2FE 50%, #F8FAFC 100%);
            border-bottom: 1px solid var(--color-border);
            padding: 48px 0 40px;
            position: relative;
            overflow: hidden;
        }

        .category-header::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -80px;
            width: 280px;
            height: 280px;
            background: radial-gradient(circle, rgba(59, 130, 246, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .category-header h1 {
            font-size: 36px;
            font-weight: 700;
            color: var(--color-heading);
            margin: 0 0 12px;
            letter-spacing: 0.5px;
            position: relative;
            z-index: 1;
        }

        .category-header .category-desc {
            font-size: 16px;
            line-height: 1.8;
            color: var(--color-text);
            max-width: 720px;
            margin: 0;
            position: relative;
            z-index: 1;
        }

        /* Featured Article */
        .featured-article {
            padding: 40px 0 0;
        }

        .featured-card {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 0;
            background: #fff;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition-base);
        }

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

        .featured-card .featured-image {
            position: relative;
            overflow: hidden;
            min-height: 320px;
        }

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

        .featured-card:hover .featured-image img {
            transform: scale(1.02);
        }

        .featured-card .featured-badge {
            position: absolute;
            top: 16px;
            left: 16px;
            background: var(--color-secondary);
            color: #fff;
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
            z-index: 2;
        }

        .featured-card .featured-content {
            padding: 32px 36px;
            display: flex;
            flex-direction: column;
        }

        .featured-card .featured-date {
            font-size: 14px;
            color: var(--color-muted);
            margin-bottom: 12px;
        }

        .featured-card .featured-title {
            font-size: 24px;
            font-weight: 700;
            color: var(--color-heading);
            margin: 0 0 16px;
            line-height: 1.4;
        }

        .featured-card .featured-excerpt {
            font-size: 16px;
            line-height: 1.8;
            color: var(--color-text);
            margin: 0 0 20px;
            flex: 1;
        }

        .btn-read-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 20px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            background: transparent;
            border: 2px solid var(--color-primary);
            color: var(--color-primary);
            transition: all var(--transition-fast);
            align-self: flex-start;
        }

        .btn-read-more:hover {
            background: var(--color-primary);
            color: #fff;
            text-decoration: none;
            box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
        }

        .btn-read-more:active {
            transform: translateY(1px);
            box-shadow: none;
        }

        /* Main Content Grid */
        .main-content-grid {
            display: grid;
            grid-template-columns: 1fr 340px;
            gap: 32px;
            padding: 40px 0 0;
            align-items: start;
        }

        /* Article List */
        .article-list-section {
            padding: 40px 0 0;
        }

        .section-heading {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 24px;
            gap: 16px;
            flex-wrap: wrap;
        }

        .section-heading h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--color-heading);
            margin: 0;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .section-heading h2 .heading-bar {
            width: 4px;
            height: 24px;
            background: var(--color-primary);
            border-radius: 2px;
            flex-shrink: 0;
        }

        .section-heading .heading-count {
            font-size: 14px;
            color: var(--color-muted);
            font-weight: 400;
        }

        .article-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .article-card {
            display: grid;
            grid-template-columns: 240px 1fr;
            gap: 20px;
            background: #fff;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
            border: 1px solid var(--color-border);
        }

        .article-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
            border-color: rgba(59, 130, 246, 0.3);
        }

        .article-card .article-image {
            overflow: hidden;
            min-height: 180px;
            background: #F1F5F9;
        }

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

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

        .article-card .article-body {
            padding: 20px 24px 20px 0;
            display: flex;
            flex-direction: column;
        }

        .article-card .article-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--color-muted);
            margin-bottom: 8px;
        }

        .article-card .article-meta .meta-tag {
            background: #EFF6FF;
            color: var(--color-primary);
            padding: 2px 10px;
            border-radius: 12px;
            font-size: 12px;
            font-weight: 600;
        }

        .article-card .article-title {
            font-size: 19px;
            font-weight: 600;
            color: var(--color-heading);
            margin: 0 0 10px;
            line-height: 1.4;
        }

        .article-card .article-title a {
            color: var(--color-heading);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

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

        .article-card .article-excerpt {
            font-size: 15px;
            line-height: 1.7;
            color: var(--color-text);
            margin: 0 0 14px;
            flex: 1;
        }

        .article-card .btn-read-more {
            padding: 8px 16px;
            font-size: 14px;
            border-width: 1.5px;
        }

        /* Sidebar */
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .sidebar-card {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border);
        }

        .sidebar-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-heading);
            margin: 0 0 16px;
            padding-bottom: 12px;
            border-bottom: 2px solid #F1F5F9;
        }

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

        .tag-cloud .tag {
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
            background: #F1F5F9;
            color: var(--color-text);
            text-decoration: none;
            transition: all var(--transition-fast);
        }

        .tag-cloud .tag:hover {
            background: var(--color-primary);
            color: #fff;
            text-decoration: none;
        }

        .hot-list {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .hot-list li a {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: var(--color-text);
            text-decoration: none;
            transition: color var(--transition-fast);
            line-height: 1.6;
        }

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

        .hot-list li .hot-rank {
            width: 22px;
            height: 22px;
            border-radius: 6px;
            background: #F1F5F9;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            font-weight: 700;
            color: var(--color-muted);
            flex-shrink: 0;
        }

        .hot-list li:nth-child(1) .hot-rank {
            background: #FEF3C7;
            color: #D97706;
        }

        .hot-list li:nth-child(2) .hot-rank {
            background: #E5E7EB;
            color: #4B5563;
        }

        .hot-list li:nth-child(3) .hot-rank {
            background: #FEF3C7;
            color: #B45309;
        }

        /* Data Snapshot */
        .data-snapshot {
            padding: 40px 0 0;
        }

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

        .data-panel {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 24px 20px;
            text-align: center;
            box-shadow: var(--shadow-card);
            border-top: 4px solid var(--color-primary);
            transition: all var(--transition-base);
        }

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

        .data-panel .data-number {
            font-size: 36px;
            font-weight: 700;
            color: var(--color-heading);
            line-height: 1.2;
            margin-bottom: 8px;
        }

        .data-panel .data-number .unit {
            font-size: 16px;
            color: var(--color-muted);
            font-weight: 500;
        }

        .data-panel .data-label {
            font-size: 14px;
            color: var(--color-muted);
            line-height: 1.5;
        }

        .data-panel.green-top {
            border-top-color: var(--color-secondary);
        }

        /* Related Categories */
        .related-categories {
            padding: 40px 0 0;
        }

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

        .related-cat-card {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 18px 20px;
            background: #fff;
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border);
            text-decoration: none;
            transition: all var(--transition-fast);
            box-shadow: var(--shadow-card);
        }

        .related-cat-card:hover {
            border-color: var(--color-primary);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
            text-decoration: none;
        }

        .related-cat-card .cat-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: #EFF6FF;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            flex-shrink: 0;
        }

        .related-cat-card .cat-name {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-heading);
            transition: color var(--transition-fast);
        }

        .related-cat-card:hover .cat-name {
            color: var(--color-primary);
        }

        /* FAQ */
        .faq-section {
            padding: 40px 0 0;
        }

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

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

        .faq-item:hover {
            border-color: rgba(59, 130, 246, 0.35);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 22px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--color-heading);
            background: none;
            text-align: left;
            width: 100%;
            transition: color var(--transition-fast);
        }

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

        .faq-question .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: #F1F5F9;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--color-muted);
            flex-shrink: 0;
            transition: all var(--transition-fast);
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-base);
            padding: 0 22px;
        }

        .faq-answer p {
            font-size: 15px;
            line-height: 1.7;
            color: var(--color-text);
            margin: 0;
            padding-bottom: 18px;
        }

        .faq-item.open .faq-answer {
            max-height: 200px;
        }

        /* CTA */
        .cta-section {
            padding: 40px 0 0;
        }

        .cta-box {
            background: linear-gradient(135deg, #EFF6FF 0%, #F0F9FF 50%, #F8FAFC 100%);
            border-radius: var(--radius-card);
            padding: 40px 36px;
            text-align: center;
            border: 1px solid #DBEAFE;
        }

        .cta-box h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--color-heading);
            margin: 0 0 12px;
        }

        .cta-box p {
            font-size: 16px;
            color: var(--color-text);
            margin: 0 0 24px;
            line-height: 1.8;
        }

        .cta-form {
            display: flex;
            gap: 12px;
            max-width: 420px;
            margin: 0 auto;
        }

        .cta-form input {
            flex: 1;
            border-radius: var(--radius-input);
        }

        .btn-submit {
            background: var(--color-primary);
            color: #fff;
            padding: 12px 24px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .btn-submit:hover {
            background: var(--color-primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(59, 130, 246, 0.35);
        }

        .btn-submit:active {
            transform: translateY(1px);
            box-shadow: none;
        }

        /* Load More */
        .load-more-section {
            text-align: center;
            padding: 32px 0 0;
        }

        .btn-load-more {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: var(--radius-btn);
            font-size: 16px;
            font-weight: 600;
            background: #fff;
            border: 2px solid var(--color-primary);
            color: var(--color-primary);
            transition: all var(--transition-fast);
        }

        .btn-load-more:hover {
            background: var(--color-primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
            text-decoration: none;
        }

        .btn-load-more:active {
            transform: translateY(1px);
        }

        /* Footer */
        .site-footer {
            background: var(--color-footer-bg);
            color: var(--color-footer-text);
            padding: 56px 0 0;
            margin-top: 64px;
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 32px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .site-footer .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--color-footer-text);
            margin: 16px 0 0;
        }

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 20px;
            color: #fff;
        }

        .footer-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            font-weight: 800;
            flex-shrink: 0;
        }

        .footer-col h3 {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin: 0 0 16px;
        }

        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

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

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

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 0;
            font-size: 14px;
            color: #94A3B8;
            flex-wrap: wrap;
        }

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

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

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

        .footer-links .separator {
            color: #475569;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .main-content-grid {
                grid-template-columns: 1fr;
            }

            .sidebar {
                order: 2;
            }

            .article-list-section {
                order: 1;
            }

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

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

            .featured-card {
                grid-template-columns: 1fr;
            }

            .featured-card .featured-image {
                min-height: 240px;
            }

            .article-card {
                grid-template-columns: 180px 1fr;
                gap: 16px;
            }

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

        @media (max-width: 768px) {
            .category-header {
                padding: 32px 0 28px;
            }

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

            .article-card {
                grid-template-columns: 1fr;
                gap: 0;
            }

            .article-card .article-image {
                min-height: 180px;
            }

            .article-card .article-body {
                padding: 16px 18px 18px;
            }

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

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

            .cta-form {
                flex-direction: column;
                max-width: 100%;
            }

            .cta-box {
                padding: 28px 20px;
            }

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

            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }

            .btn-primary-header {
                padding: 8px 14px;
                font-size: 13px;
            }
        }

        @media (max-width: 520px) {
            :root {
                --spacing-section: 48px;
            }

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

            .category-header .category-desc {
                font-size: 15px;
            }

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

            .article-card .article-title {
                font-size: 17px;
            }

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

            .drawer-nav {
                width: 100%;
                max-width: 100%;
                padding: 20px;
            }

            .drawer-nav-list li a {
                font-size: 18px;
                padding: 12px 14px;
            }

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

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

        /* Focus visible for accessibility */
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }

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

/* roulang page: category6 */
:root {
  --color-primary: #3B82F6;
  --color-primary-light: #60A5FA;
  --color-primary-dark: #2563EB;
  --color-secondary: #22C55E;
  --color-secondary-dark: #16A34A;
  --color-bg: #F8FAFC;
  --color-card-bg: #FFFFFF;
  --color-heading: #0F172A;
  --color-text: #334155;
  --color-muted: #64748B;
  --color-border: #E2E8F0;
  --color-footer-bg: #0F172A;
  --color-footer-text: #CBD5E1;
  --radius-card: 12px;
  --radius-btn: 8px;
  --radius-input: 6px;
  --shadow-card: 0 4px 16px rgba(15, 23, 42, 0.04);
  --shadow-card-hover: 0 10px 28px rgba(15, 23, 42, 0.08);
  --shadow-overlay: 0 20px 60px rgba(15, 23, 42, 0.25);
  --font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
  --container-max: 1200px;
  --spacing-section: 72px;
  --spacing-section-mobile: 52px;
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --header-height: 72px;
}

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

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

body {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-text);
  background-color: var(--color-bg);
  min-height: 100vh;
  padding-top: var(--header-height);
}

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

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

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

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

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

input {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-input);
  padding: 12px 16px;
  font-size: 15px;
  color: var(--color-heading);
  background: #fff;
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  width: 100%;
}

input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

input::placeholder {
  color: #94A3B8;
}

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

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow var(--transition-base);
}

.site-header.scrolled {
  box-shadow: 0 2px 16px rgba(15, 23, 42, 0.06);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.header-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 22px;
  color: var(--color-heading);
  letter-spacing: 0.5px;
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

.header-logo .logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 18px;
  font-weight: 800;
  flex-shrink: 0;
}

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

.btn-menu {
  width: 44px;
  height: 44px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #fff;
  border: 1px solid var(--color-border);
  color: var(--color-heading);
  transition: all var(--transition-fast);
  flex-direction: column;
  gap: 5px;
}

.btn-menu:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

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

.btn-menu span {
  display: block;
  width: 22px;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
  transition: all var(--transition-fast);
}

.btn-primary-header {
  background: var(--color-primary);
  color: #fff;
  padding: 10px 20px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 600;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn-primary-header:hover {
  background: var(--color-primary-dark);
  color: #fff;
  text-decoration: none;
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

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

/* Drawer Navigation */
.drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.55);
  z-index: 1001;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
}

.drawer-overlay.active {
  opacity: 1;
  visibility: visible;
}

.drawer-nav {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 420px;
  max-width: 90vw;
  background: #fff;
  z-index: 1002;
  transform: translateX(100%);
  transition: transform var(--transition-base);
  box-shadow: var(--shadow-overlay);
  display: flex;
  flex-direction: column;
  padding: 32px 28px;
}

.drawer-nav.active {
  transform: translateX(0);
}

.drawer-nav-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 32px;
}

.drawer-nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 20px;
  color: var(--color-heading);
}

.drawer-nav-logo .logo-icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 16px;
  font-weight: 800;
}

.btn-close-drawer {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-border);
  color: var(--color-heading);
  font-size: 22px;
  font-weight: 400;
  transition: all var(--transition-fast);
}

.btn-close-drawer:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

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

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

.drawer-nav-list a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  font-size: 22px;
  font-weight: 600;
  color: var(--color-heading);
  border-radius: 8px;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.drawer-nav-list a:hover {
  background: rgba(59, 130, 246, 0.06);
  color: var(--color-primary);
  text-decoration: none;
}

.drawer-nav-list a.active {
  background: rgba(59, 130, 246, 0.1);
  color: var(--color-primary);
}

.drawer-nav-footer {
  margin-top: auto;
  font-size: 14px;
  color: var(--color-muted);
  border-top: 1px solid var(--color-border);
  padding-top: 20px;
}

/* Breadcrumb + Category Header */
.category-header {
  background: linear-gradient(135deg, #EFF6FF 0%, #F8FAFC 55%, #F0FDF4 100%);
  border-bottom: 1px solid var(--color-border);
  padding: 40px 0 32px;
  position: relative;
  overflow: hidden;
}

.category-header::before {
  content: '';
  position: absolute;
  top: -60px;
  right: -40px;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.06) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.category-header .container {
  position: relative;
  z-index: 1;
}

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

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

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

.breadcrumb .separator {
  color: #94A3B8;
}

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

.category-header h1 {
  font-size: 36px;
  font-weight: 700;
  color: var(--color-heading);
  letter-spacing: 0.5px;
  line-height: 1.3;
  margin-bottom: 12px;
}

.category-header .category-desc {
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-text);
  max-width: 760px;
}

/* Main content */
.main-content {
  padding: var(--spacing-section) 0;
}

/* Section titles */
.section-title {
  font-size: 26px;
  font-weight: 700;
  color: var(--color-heading);
  letter-spacing: 0.3px;
  margin-bottom: 8px;
  line-height: 1.4;
}

.section-subtitle {
  font-size: 15px;
  color: var(--color-muted);
  margin-bottom: 28px;
  line-height: 1.7;
}

.section-title-wrapper {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 20px;
}

.section-title-indicator {
  width: 4px;
  height: 28px;
  background: var(--color-primary);
  border-radius: 2px;
  flex-shrink: 0;
  margin-top: 6px;
}

.section-title-wrapper .section-title {
  margin-bottom: 4px;
}

/* Featured Big Card */
.featured-card {
  background: var(--color-card-bg);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 0;
  transition: box-shadow var(--transition-base), transform var(--transition-base);
  border: 1px solid var(--color-border);
}

.featured-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-4px);
}

.featured-card-image {
  position: relative;
  min-height: 320px;
  overflow: hidden;
}

.featured-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  inset: 0;
}

.featured-card-image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(15, 23, 42, 0.05) 0%, rgba(15, 23, 42, 0) 60%);
  pointer-events: none;
}

.featured-card-badge {
  position: absolute;
  top: 18px;
  left: 18px;
  background: var(--color-secondary);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 20px;
  z-index: 2;
  letter-spacing: 0.3px;
}

.featured-card-body {
  padding: 32px 36px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.featured-card-date {
  font-size: 14px;
  color: var(--color-primary);
  font-weight: 600;
  margin-bottom: 10px;
  letter-spacing: 0.5px;
}

.featured-card-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-heading);
  line-height: 1.4;
  margin-bottom: 14px;
}

.featured-card-summary {
  font-size: 15px;
  line-height: 1.8;
  color: var(--color-text);
  margin-bottom: 20px;
}

.featured-card-meta {
  display: flex;
  gap: 20px;
  font-size: 13px;
  color: var(--color-muted);
  flex-wrap: wrap;
}

.featured-card-meta span {
  display: flex;
  align-items: center;
  gap: 6px;
}

.featured-card-meta .dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--color-secondary);
  display: inline-block;
}

/* Timeline / Schedule List */
.schedule-timeline {
  position: relative;
  padding-left: 32px;
}

.schedule-timeline::before {
  content: '';
  position: absolute;
  left: 10px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: var(--color-border);
  border-radius: 1px;
}

.schedule-item {
  position: relative;
  margin-bottom: 22px;
  background: var(--color-card-bg);
  border-radius: var(--radius-card);
  border: 1px solid var(--color-border);
  padding: 20px 24px;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-card);
}

.schedule-item:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateX(4px);
  border-color: var(--color-primary-light);
}

.schedule-item::before {
  content: '';
  position: absolute;
  left: -27px;
  top: 28px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-primary);
  border: 2px solid #fff;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.schedule-item-date {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-secondary-dark);
  letter-spacing: 0.5px;
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.schedule-item-date .calendar-icon {
  font-size: 15px;
}

.schedule-item-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-heading);
  line-height: 1.5;
  margin-bottom: 8px;
}

.schedule-item-summary {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-muted);
  margin-bottom: 12px;
}

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

.schedule-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: var(--color-primary);
  background: rgba(59, 130, 246, 0.08);
  padding: 4px 12px;
  border-radius: 20px;
  letter-spacing: 0.3px;
}

.schedule-time {
  font-size: 13px;
  color: var(--color-muted);
  font-weight: 500;
}

/* Data Fact Panels */
.facts-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.fact-panel {
  background: var(--color-card-bg);
  border-radius: var(--radius-card);
  border: 1px solid var(--color-border);
  padding: 22px 24px;
  text-align: center;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-card);
}

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

.fact-number {
  font-size: 34px;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.3;
  margin-bottom: 6px;
}

.fact-label {
  font-size: 14px;
  color: var(--color-muted);
  font-weight: 500;
}

.fact-panel:nth-child(2) .fact-number {
  color: var(--color-secondary-dark);
}

.fact-panel:nth-child(3) .fact-number {
  color: var(--color-primary-dark);
}

/* Tag Cloud */
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.tag-cloud a {
  display: inline-block;
  padding: 8px 18px;
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  font-size: 14px;
  color: var(--color-text);
  font-weight: 500;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.tag-cloud a:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: rgba(59, 130, 246, 0.05);
  text-decoration: none;
  transform: translateY(-2px);
}

/* Related category cards */
.related-cats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.related-cat-card {
  background: var(--color-card-bg);
  border-radius: var(--radius-card);
  border: 1px solid var(--color-border);
  padding: 24px 20px;
  text-align: center;
  transition: all var(--transition-base);
  text-decoration: none;
  box-shadow: var(--shadow-card);
  display: block;
}

.related-cat-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-4px);
  text-decoration: none;
  border-color: var(--color-primary-light);
}

.related-cat-icon {
  font-size: 28px;
  margin-bottom: 10px;
  display: block;
}

.related-cat-name {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-heading);
  line-height: 1.4;
}

.related-cat-card:hover .related-cat-name {
  color: var(--color-primary);
}

.related-cat-card .related-cat-count {
  font-size: 13px;
  color: var(--color-muted);
  margin-top: 4px;
}

/* FAQ */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

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

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

.faq-question {
  padding: 18px 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  cursor: pointer;
  font-size: 17px;
  font-weight: 600;
  color: var(--color-heading);
  line-height: 1.5;
  transition: color var(--transition-fast);
  user-select: none;
}

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

.faq-question .faq-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(59, 130, 246, 0.08);
  color: var(--color-primary);
  font-size: 18px;
  font-weight: 600;
  transition: all var(--transition-fast);
}

.faq-answer {
  padding: 0 22px 20px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--color-text);
  display: none;
}

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

.faq-item.active .faq-icon {
  background: rgba(34, 197, 94, 0.12);
  color: var(--color-secondary-dark);
}

/* CTA Section */
.cta-section {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.06) 0%, rgba(34, 197, 94, 0.04) 100%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 36px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  flex-wrap: wrap;
}

.cta-section-text {
  flex: 1;
  min-width: 260px;
}

.cta-section-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-heading);
  margin-bottom: 8px;
  line-height: 1.4;
}

.cta-section-sub {
  font-size: 15px;
  color: var(--color-muted);
  line-height: 1.7;
}

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

.cta-form input {
  width: 260px;
  flex-shrink: 0;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  padding: 12px 24px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 600;
  transition: all var(--transition-fast);
  white-space: nowrap;
  display: inline-block;
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  color: #fff;
  text-decoration: none;
  box-shadow: 0 4px 14px rgba(59, 130, 246, 0.3);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(1px);
  box-shadow: none;
}

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

.btn-outline-secondary {
  border: 1px solid var(--color-secondary);
  color: var(--color-secondary-dark);
  padding: 12px 24px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 600;
  transition: all var(--transition-fast);
  white-space: nowrap;
  display: inline-block;
  background: transparent;
}

.btn-outline-secondary:hover {
  background: var(--color-secondary);
  color: #fff;
  text-decoration: none;
  box-shadow: 0 4px 14px rgba(34, 197, 94, 0.25);
}

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

.btn-outline {
  border: 1px solid var(--color-primary);
  color: var(--color-primary);
  padding: 10px 20px;
  border-radius: var(--radius-btn);
  font-size: 14px;
  font-weight: 600;
  transition: all var(--transition-fast);
  white-space: nowrap;
  display: inline-block;
  background: transparent;
}

.btn-outline:hover {
  background: var(--color-primary);
  color: #fff;
  text-decoration: none;
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.25);
}

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

.btn-view-more {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  background: transparent;
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-btn);
  color: var(--color-primary);
  font-size: 15px;
  font-weight: 600;
  transition: all var(--transition-fast);
  text-decoration: none;
  cursor: pointer;
}

.btn-view-more:hover {
  background: var(--color-primary);
  color: #fff;
  text-decoration: none;
  box-shadow: 0 6px 18px rgba(59, 130, 246, 0.25);
}

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

/* Footer */
.site-footer {
  background: var(--color-footer-bg);
  color: var(--color-footer-text);
  padding: 52px 0 24px;
  margin-top: var(--spacing-section);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 36px;
  margin-bottom: 36px;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: #94A3B8;
  margin-top: 12px;
  max-width: 300px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 20px;
  color: #fff;
}

.footer-logo .logo-icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 16px;
  font-weight: 800;
}

.footer-col h3 {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
  letter-spacing: 0.3px;
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col ul a {
  color: #94A3B8;
  font-size: 14px;
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  border-top: 1px solid rgba(148, 163, 184, 0.2);
  padding-top: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 14px;
  color: #94A3B8;
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 10px;
}

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

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

.footer-links .separator {
  color: rgba(148, 163, 184, 0.4);
}

/* Responsive */
@media (max-width: 1024px) {
  .featured-card {
    grid-template-columns: 1fr;
  }
  .featured-card-image {
    min-height: 220px;
  }
  .featured-card-body {
    padding: 24px 26px;
  }
  .facts-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
  }
  .related-cats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
  }
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
  }
}

@media (max-width: 768px) {
  :root {
    --spacing-section: 52px;
  }
  .category-header {
    padding: 28px 0 24px;
  }
  .category-header h1 {
    font-size: 28px;
  }
  .category-header .category-desc {
    font-size: 15px;
  }
  .main-content {
    padding: var(--spacing-section) 0;
  }
  .section-title {
    font-size: 22px;
  }
  .schedule-timeline {
    padding-left: 24px;
  }
  .schedule-timeline::before {
    left: 8px;
  }
  .schedule-item::before {
    left: -20px;
    width: 8px;
    height: 8px;
  }
  .schedule-item {
    padding: 16px 18px;
  }
  .schedule-item-title {
    font-size: 16px;
  }
  .facts-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .fact-panel {
    padding: 18px 20px;
  }
  .fact-number {
    font-size: 28px;
  }
  .related-cats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .cta-section {
    padding: 24px 20px;
    flex-direction: column;
    align-items: flex-start;
  }
  .cta-form {
    width: 100%;
  }
  .cta-form input {
    width: 100%;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 520px) {
  .btn-primary-header {
    padding: 8px 14px;
    font-size: 13px;
  }
  .category-header h1 {
    font-size: 24px;
  }
  .featured-card-date {
    font-size: 12px;
  }
  .featured-card-title {
    font-size: 20px;
  }
  .featured-card-summary {
    font-size: 14px;
  }
  .related-cats-grid {
    grid-template-columns: 1fr;
  }
  .schedule-item-footer {
    flex-direction: column;
    align-items: flex-start;
  }
  .drawer-nav {
    padding: 20px 18px;
  }
  .drawer-nav-list a {
    font-size: 18px;
    padding: 12px 14px;
  }
}

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

/* roulang page: category5 */
:root {
        --color-primary: #3B82F6;
        --color-primary-light: #60A5FA;
        --color-primary-dark: #2563EB;
        --color-secondary: #22C55E;
        --color-secondary-dark: #16A34A;
        --color-bg: #F8FAFC;
        --color-card-bg: #FFFFFF;
        --color-heading: #0F172A;
        --color-text: #334155;
        --color-muted: #64748B;
        --color-border: #E2E8F0;
        --color-footer-bg: #0F172A;
        --color-footer-text: #CBD5E1;
        --radius-card: 12px;
        --radius-btn: 8px;
        --radius-input: 6px;
        --shadow-card: 0 4px 16px rgba(15, 23, 42, 0.04);
        --shadow-card-hover: 0 10px 28px rgba(15, 23, 42, 0.08);
        --shadow-overlay: 0 20px 60px rgba(15, 23, 42, 0.25);
        --font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
        --container-max: 1200px;
        --spacing-section: 72px;
        --spacing-section-mobile: 56px;
        --transition-fast: 0.2s ease;
        --transition-base: 0.3s ease;
        --header-height: 72px;
    }

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

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

    body {
        font-family: var(--font-family);
        font-size: 16px;
        line-height: 1.8;
        color: var(--color-text);
        background-color: var(--color-bg);
        min-height: 100vh;
        padding-top: var(--header-height);
    }

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

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

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

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

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

    input {
        border: 1px solid var(--color-border);
        border-radius: var(--radius-input);
        padding: 12px 16px;
        font-size: 15px;
        color: var(--color-heading);
        background: #fff;
        outline: none;
        transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        width: 100%;
    }

    input:focus {
        border-color: var(--color-primary);
        box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
    }

    input::placeholder {
        color: #94A3B8;
    }

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

    /* Header */
    .site-header {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 1000;
        height: var(--header-height);
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        border-bottom: 1px solid var(--color-border);
        transition: box-shadow var(--transition-base);
    }

    .site-header.scrolled {
        box-shadow: 0 2px 16px rgba(15, 23, 42, 0.06);
    }

    .site-header .container {
        display: flex;
        align-items: center;
        justify-content: space-between;
        height: 100%;
    }

    .header-logo {
        display: flex;
        align-items: center;
        gap: 10px;
        font-weight: 700;
        font-size: 22px;
        color: var(--color-heading);
        letter-spacing: 0.5px;
        text-decoration: none;
        transition: color var(--transition-fast);
    }

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

    .header-logo .logo-icon {
        width: 36px;
        height: 36px;
        background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
        border-radius: 8px;
        display: flex;
        align-items: center;
        justify-content: center;
        color: #fff;
        font-size: 18px;
        font-weight: 800;
        flex-shrink: 0;
    }

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

    .btn-menu {
        width: 44px;
        height: 44px;
        border-radius: 8px;
        display: flex;
        align-items: center;
        justify-content: center;
        background: #fff;
        border: 1px solid var(--color-border);
        color: var(--color-heading);
        transition: all var(--transition-fast);
        flex-direction: column;
        gap: 5px;
    }

    .btn-menu:hover {
        border-color: var(--color-primary);
        color: var(--color-primary);
    }

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

    .btn-menu span {
        display: block;
        width: 22px;
        height: 2px;
        background: currentColor;
        border-radius: 2px;
        transition: all var(--transition-fast);
    }

    .btn-primary-header {
        background: var(--color-primary);
        color: #fff;
        padding: 10px 20px;
        border-radius: var(--radius-btn);
        font-size: 15px;
        font-weight: 600;
        transition: all var(--transition-fast);
        white-space: nowrap;
        text-decoration: none;
        display: inline-block;
    }

    .btn-primary-header:hover {
        background: var(--color-primary-dark);
        color: #fff;
        text-decoration: none;
        transform: translateY(-1px);
        box-shadow: 0 4px 12px rgba(59, 130, 246, 0.25);
    }

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

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

    /* Drawer Overlay */
    .drawer-overlay {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        z-index: 2000;
        background: rgba(15, 23, 42, 0.55);
        opacity: 0;
        visibility: hidden;
        transition: opacity var(--transition-base), visibility var(--transition-base);
    }

    .drawer-overlay.open {
        opacity: 1;
        visibility: visible;
    }

    .drawer-panel {
        position: absolute;
        top: 0;
        right: 0;
        width: 420px;
        max-width: 100%;
        height: 100%;
        background: #fff;
        box-shadow: var(--shadow-overlay);
        transform: translateX(100%);
        transition: transform var(--transition-base);
        display: flex;
        flex-direction: column;
        padding: 32px 36px;
        overflow-y: auto;
    }

    .drawer-overlay.open .drawer-panel {
        transform: translateX(0);
    }

    .drawer-header {
        display: flex;
        align-items: center;
        justify-content: space-between;
        margin-bottom: 40px;
        padding-bottom: 16px;
        border-bottom: 1px solid var(--color-border);
    }

    .drawer-header-title {
        font-size: 18px;
        font-weight: 600;
        color: var(--color-heading);
        letter-spacing: 0.5px;
    }

    .drawer-close {
        width: 40px;
        height: 40px;
        border-radius: 8px;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 24px;
        color: var(--color-muted);
        background: var(--color-bg);
        border: 1px solid var(--color-border);
        transition: all var(--transition-fast);
        line-height: 1;
    }

    .drawer-close:hover {
        color: var(--color-heading);
        border-color: var(--color-muted);
        background: #fff;
    }

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

    .drawer-nav {
        display: flex;
        flex-direction: column;
        gap: 4px;
    }

    .drawer-nav a {
        font-size: 26px;
        font-weight: 600;
        color: var(--color-heading);
        padding: 14px 16px;
        border-radius: 10px;
        transition: all var(--transition-fast);
        text-decoration: none;
        letter-spacing: 0.5px;
        display: flex;
        align-items: center;
        gap: 12px;
    }

    .drawer-nav a::before {
        content: '';
        width: 6px;
        height: 6px;
        border-radius: 50%;
        background: var(--color-border);
        transition: background var(--transition-fast);
        flex-shrink: 0;
    }

    .drawer-nav a:hover {
        background: var(--color-bg);
        color: var(--color-primary);
        text-decoration: none;
    }

    .drawer-nav a:hover::before {
        background: var(--color-primary);
    }

    .drawer-nav a.active {
        background: rgba(59, 130, 246, 0.08);
        color: var(--color-primary);
    }

    .drawer-nav a.active::before {
        background: var(--color-primary);
    }

    .drawer-nav a:focus-visible {
        outline: 2px solid var(--color-primary);
        outline-offset: 2px;
    }

    /* Main content */
    main {
        min-height: 60vh;
    }

    /* Category Hero */
    .category-hero {
        background: linear-gradient(180deg, #EFF6FF 0%, var(--color-bg) 100%);
        padding: 56px 0 40px;
        border-bottom: 1px solid rgba(226, 232, 240, 0.6);
    }

    .breadcrumb {
        display: flex;
        align-items: center;
        gap: 8px;
        font-size: 14px;
        color: var(--color-muted);
        margin-bottom: 20px;
        flex-wrap: wrap;
    }

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

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

    .breadcrumb .separator {
        color: #CBD5E1;
        font-size: 12px;
    }

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

    .category-hero h1 {
        font-size: 40px;
        font-weight: 700;
        color: var(--color-heading);
        letter-spacing: -0.5px;
        margin-bottom: 16px;
        line-height: 1.3;
    }

    .category-hero .category-intro {
        font-size: 17px;
        color: var(--color-text);
        line-height: 1.8;
        max-width: 760px;
    }

    /* Section common */
    .section {
        padding: var(--spacing-section) 0;
    }

    .section-alt {
        background: #fff;
        border-top: 1px solid var(--color-border);
        border-bottom: 1px solid var(--color-border);
    }

    .section-header {
        display: flex;
        align-items: flex-end;
        justify-content: space-between;
        margin-bottom: 32px;
        gap: 16px;
        flex-wrap: wrap;
    }

    .section-header h2 {
        font-size: 28px;
        font-weight: 700;
        color: var(--color-heading);
        letter-spacing: -0.3px;
        line-height: 1.4;
        position: relative;
        padding-left: 16px;
    }

    .section-header h2::before {
        content: '';
        position: absolute;
        left: 0;
        top: 8px;
        bottom: 8px;
        width: 4px;
        border-radius: 2px;
        background: var(--color-primary);
    }

    .section-header .section-tag {
        font-size: 14px;
        color: var(--color-muted);
        background: var(--color-bg);
        padding: 6px 14px;
        border-radius: 20px;
        border: 1px solid var(--color-border);
        white-space: nowrap;
    }

    /* Featured Article */
    .featured-article {
        display: grid;
        grid-template-columns: 1fr 1.1fr;
        gap: 36px;
        background: #fff;
        border-radius: var(--radius-card);
        box-shadow: var(--shadow-card);
        overflow: hidden;
        border: 1px solid var(--color-border);
        transition: box-shadow var(--transition-base);
    }

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

    .featured-image {
        min-height: 320px;
        height: 100%;
        overflow: hidden;
    }

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

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

    .featured-content {
        padding: 32px 36px 32px 0;
        display: flex;
        flex-direction: column;
        justify-content: center;
    }

    .featured-badge {
        display: inline-block;
        background: var(--color-secondary);
        color: #fff;
        font-size: 13px;
        font-weight: 600;
        padding: 4px 12px;
        border-radius: 4px;
        margin-bottom: 16px;
        align-self: flex-start;
    }

    .featured-content h3 {
        font-size: 26px;
        font-weight: 700;
        color: var(--color-heading);
        margin-bottom: 12px;
        line-height: 1.4;
    }

    .featured-content .featured-date {
        font-size: 14px;
        color: var(--color-muted);
        margin-bottom: 14px;
    }

    .featured-content .featured-excerpt {
        font-size: 15px;
        color: var(--color-text);
        line-height: 1.8;
        margin-bottom: 20px;
    }

    /* Article List */
    .content-layout {
        display: grid;
        grid-template-columns: 1fr 340px;
        gap: 36px;
        align-items: start;
    }

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

    .article-card {
        background: #fff;
        border-radius: var(--radius-card);
        padding: 24px 28px;
        border: 1px solid var(--color-border);
        box-shadow: var(--shadow-card);
        transition: all var(--transition-base);
        display: flex;
        gap: 18px;
        align-items: flex-start;
    }

    .article-card:hover {
        box-shadow: var(--shadow-card-hover);
        transform: translateY(-3px);
        border-color: rgba(59, 130, 246, 0.25);
    }

    .article-thumb {
        width: 120px;
        height: 80px;
        border-radius: 8px;
        overflow: hidden;
        flex-shrink: 0;
    }

    .article-thumb img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }

    .article-info {
        flex: 1;
        min-width: 0;
    }

    .article-info h3 {
        font-size: 18px;
        font-weight: 600;
        color: var(--color-heading);
        margin-bottom: 6px;
        line-height: 1.5;
    }

    .article-info h3 a {
        color: inherit;
        text-decoration: none;
        transition: color var(--transition-fast);
    }

    .article-info h3 a:hover {
        color: var(--color-primary);
    }

    .article-meta {
        font-size: 13px;
        color: var(--color-muted);
        margin-bottom: 8px;
    }

    .article-excerpt {
        font-size: 14px;
        color: var(--color-text);
        line-height: 1.7;
        margin-bottom: 12px;
    }

    .btn-read-more {
        display: inline-block;
        font-size: 14px;
        font-weight: 600;
        color: var(--color-primary);
        text-decoration: none;
        padding: 4px 0;
        border-bottom: 1px solid transparent;
        transition: all var(--transition-fast);
    }

    .btn-read-more:hover {
        color: var(--color-primary-dark);
        border-bottom-color: var(--color-primary-dark);
        text-decoration: none;
    }

    .btn-read-more:focus-visible {
        outline: 2px solid var(--color-primary);
        outline-offset: 2px;
        border-radius: 2px;
    }

    /* Load more */
    .load-more-wrapper {
        display: flex;
        justify-content: center;
        margin-top: 28px;
    }

    .btn-load-more {
        background: #fff;
        color: var(--color-primary);
        border: 1.5px solid var(--color-primary);
        padding: 12px 32px;
        border-radius: var(--radius-btn);
        font-size: 15px;
        font-weight: 600;
        transition: all var(--transition-fast);
        text-decoration: none;
        display: inline-block;
    }

    .btn-load-more:hover {
        background: var(--color-primary);
        color: #fff;
        text-decoration: none;
        box-shadow: 0 4px 14px rgba(59, 130, 246, 0.25);
        transform: translateY(-1px);
    }

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

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

    /* Sidebar */
    .sidebar {
        position: sticky;
        top: calc(var(--header-height) + 24px);
        display: flex;
        flex-direction: column;
        gap: 24px;
    }

    .sidebar-card {
        background: #fff;
        border-radius: var(--radius-card);
        padding: 24px;
        border: 1px solid var(--color-border);
        box-shadow: var(--shadow-card);
    }

    .sidebar-card h3 {
        font-size: 18px;
        font-weight: 600;
        color: var(--color-heading);
        margin-bottom: 16px;
        padding-bottom: 12px;
        border-bottom: 1px solid var(--color-border);
    }

    .tag-cloud {
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
    }

    .tag-cloud a {
        font-size: 13px;
        color: var(--color-muted);
        background: var(--color-bg);
        padding: 6px 14px;
        border-radius: 20px;
        border: 1px solid var(--color-border);
        text-decoration: none;
        transition: all var(--transition-fast);
        white-space: nowrap;
    }

    .tag-cloud a:hover {
        color: var(--color-primary);
        border-color: var(--color-primary);
        background: rgba(59, 130, 246, 0.05);
        text-decoration: none;
    }

    .hot-list {
        list-style: none;
        display: flex;
        flex-direction: column;
        gap: 12px;
    }

    .hot-list li a {
        font-size: 14px;
        color: var(--color-text);
        text-decoration: none;
        line-height: 1.6;
        display: block;
        padding: 8px 12px;
        border-radius: 6px;
        transition: all var(--transition-fast);
    }

    .hot-list li a:hover {
        color: var(--color-primary);
        background: var(--color-bg);
        text-decoration: none;
    }

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

    .data-panel {
        background: #fff;
        border-radius: var(--radius-card);
        padding: 28px 24px;
        text-align: center;
        border: 1px solid var(--color-border);
        box-shadow: var(--shadow-card);
        transition: all var(--transition-base);
    }

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

    .data-number {
        font-size: 36px;
        font-weight: 700;
        color: var(--color-primary);
        margin-bottom: 8px;
        line-height: 1.2;
    }

    .data-label {
        font-size: 14px;
        color: var(--color-muted);
        line-height: 1.5;
    }

    /* Related Categories */
    .related-cat-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 16px;
    }

    .related-cat-card {
        background: #fff;
        border-radius: var(--radius-card);
        padding: 22px 18px;
        text-align: center;
        border: 1px solid var(--color-border);
        box-shadow: var(--shadow-card);
        transition: all var(--transition-base);
        text-decoration: none;
        color: var(--color-heading);
        font-weight: 600;
        font-size: 15px;
    }

    .related-cat-card:hover {
        box-shadow: var(--shadow-card-hover);
        transform: translateY(-3px);
        border-color: rgba(59, 130, 246, 0.3);
        color: var(--color-primary);
        text-decoration: none;
    }

    .related-cat-card:focus-visible {
        outline: 2px solid var(--color-primary);
        outline-offset: 2px;
    }

    /* FAQ */
    .faq-list {
        display: flex;
        flex-direction: column;
        gap: 14px;
        max-width: 820px;
    }

    .faq-item {
        background: #fff;
        border-radius: var(--radius-card);
        border: 1px solid var(--color-border);
        padding: 20px 24px;
        box-shadow: var(--shadow-card);
        transition: all var(--transition-fast);
    }

    .faq-item:hover {
        border-color: rgba(59, 130, 246, 0.25);
    }

    .faq-question {
        display: flex;
        align-items: flex-start;
        gap: 12px;
        font-size: 17px;
        font-weight: 600;
        color: var(--color-heading);
        line-height: 1.6;
        margin-bottom: 8px;
    }

    .faq-question .faq-icon {
        color: var(--color-primary);
        font-size: 20px;
        flex-shrink: 0;
        margin-top: 2px;
        font-weight: 700;
    }

    .faq-answer {
        font-size: 15px;
        color: var(--color-text);
        line-height: 1.75;
        padding-left: 32px;
    }

    /* CTA Section */
    .cta-section {
        background: linear-gradient(135deg, #EFF6FF 0%, #DBEAFE 100%);
        border-radius: var(--radius-card);
        padding: 48px 40px;
        text-align: center;
    }

    .cta-section h2 {
        font-size: 26px;
        font-weight: 700;
        color: var(--color-heading);
        margin-bottom: 12px;
        line-height: 1.4;
    }

    .cta-section p {
        font-size: 16px;
        color: var(--color-text);
        max-width: 520px;
        margin: 0 auto 24px;
        line-height: 1.8;
    }

    .cta-form {
        display: flex;
        gap: 12px;
        max-width: 420px;
        margin: 0 auto;
    }

    .cta-form input {
        flex: 1;
        min-width: 0;
    }

    .btn-subscribe {
        background: var(--color-primary);
        color: #fff;
        padding: 12px 24px;
        border-radius: var(--radius-btn);
        font-size: 15px;
        font-weight: 600;
        transition: all var(--transition-fast);
        white-space: nowrap;
        border: none;
    }

    .btn-subscribe:hover {
        background: var(--color-primary-dark);
        transform: translateY(-1px);
        box-shadow: 0 4px 12px rgba(59, 130, 246, 0.25);
    }

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

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

    /* Footer */
    .site-footer {
        background: var(--color-footer-bg);
        color: var(--color-footer-text);
        padding: 56px 0 32px;
        margin-top: 0;
    }

    .footer-grid {
        display: grid;
        grid-template-columns: 2fr 1fr 1fr 1fr;
        gap: 36px;
        margin-bottom: 40px;
    }

    .footer-brand p {
        font-size: 14px;
        color: var(--color-footer-text);
        line-height: 1.7;
        margin-top: 14px;
        max-width: 300px;
    }

    .footer-logo {
        display: flex;
        align-items: center;
        gap: 10px;
        font-weight: 700;
        font-size: 20px;
        color: #fff;
        letter-spacing: 0.5px;
    }

    .footer-logo .logo-icon {
        width: 36px;
        height: 36px;
        background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
        border-radius: 8px;
        display: flex;
        align-items: center;
        justify-content: center;
        color: #fff;
        font-size: 18px;
        font-weight: 800;
        flex-shrink: 0;
    }

    .footer-col h3 {
        font-size: 16px;
        font-weight: 600;
        color: #fff;
        margin-bottom: 16px;
        letter-spacing: 0.5px;
    }

    .footer-col ul {
        list-style: none;
        display: flex;
        flex-direction: column;
        gap: 10px;
    }

    .footer-col ul li a {
        font-size: 14px;
        color: var(--color-footer-text);
        text-decoration: none;
        transition: color var(--transition-fast);
        line-height: 1.6;
    }

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

    .footer-bottom {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
        padding-top: 24px;
        border-top: 1px solid rgba(203, 213, 225, 0.2);
        font-size: 14px;
        color: #94A3B8;
        flex-wrap: wrap;
    }

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

    .footer-links a {
        font-size: 14px;
        color: #94A3B8;
        text-decoration: none;
        transition: color var(--transition-fast);
    }

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

    .footer-links .separator {
        color: rgba(203, 213, 225, 0.4);
    }

    /* Responsive */
    @media (max-width: 1024px) {
        .content-layout {
            grid-template-columns: 1fr;
            gap: 28px;
        }

        .sidebar {
            position: static;
            flex-direction: row;
            flex-wrap: wrap;
        }

        .sidebar-card {
            flex: 1;
            min-width: 280px;
        }

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

        .featured-article {
            grid-template-columns: 1fr;
        }

        .featured-image {
            min-height: 220px;
        }

        .featured-content {
            padding: 28px 32px;
        }

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

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

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

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

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

        .article-card {
            flex-direction: column;
            padding: 20px;
        }

        .article-thumb {
            width: 100%;
            height: 160px;
        }

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

        .data-panel {
            padding: 20px 16px;
        }

        .data-number {
            font-size: 28px;
        }

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

        .cta-section {
            padding: 36px 20px;
        }

        .cta-form {
            flex-direction: column;
        }

        .btn-subscribe {
            width: 100%;
        }

        .drawer-panel {
            width: 100%;
            padding: 24px 20px;
        }

        .drawer-nav a {
            font-size: 20px;
            padding: 12px 14px;
        }

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

        .footer-bottom {
            flex-direction: column;
            text-align: center;
            gap: 12px;
        }
    }

    @media (max-width: 520px) {
        .category-hero h1 {
            font-size: 26px;
        }

        .category-hero .category-intro {
            font-size: 15px;
        }

        .section-header {
            flex-direction: column;
            align-items: flex-start;
        }

        .featured-content h3 {
            font-size: 20px;
        }

        .btn-primary-header {
            padding: 8px 14px;
            font-size: 13px;
        }

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

        .header-logo .logo-icon {
            width: 30px;
            height: 30px;
            font-size: 15px;
        }

        .article-info h3 {
            font-size: 16px;
        }

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

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

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

        html {
            scroll-behavior: auto;
        }

        .article-card:hover,
        .data-panel:hover,
        .related-cat-card:hover,
        .featured-article:hover {
            transform: none;
        }

        .featured-article:hover .featured-image img {
            transform: none;
        }

        .btn-primary-header:hover,
        .btn-subscribe:hover,
        .btn-load-more:hover {
            transform: none;
        }
    }