/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --color-primary: #0b0d1a;
            --color-secondary: #0f1429;
            --color-accent: #00d4ff;
            --color-accent-alt: #7c3aed;
            --color-accent-green: #2dd4bf;
            --color-bg: #080a16;
            --color-surface: #111528;
            --color-surface-hover: #1a1f3a;
            --color-card: #0f1429;
            --color-card-border: #1e2648;
            --color-text: #f1f5f9;
            --color-text-secondary: #94a3b8;
            --color-text-muted: #64748b;
            --color-border: #1e2648;
            --color-gradient-start: #00d4ff;
            --color-gradient-end: #7c3aed;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 30px rgba(0, 212, 255, 0.15);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --container-max: 1280px;
            --header-brand-height: 70px;
            --header-nav-height: 52px;
            --header-total: calc(var(--header-brand-height) + var(--header-nav-height));
        }

        /* ===== Reset ===== */
        *,
        *::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-sans);
            font-size: 16px;
            line-height: 1.6;
            color: var(--color-text);
            background: var(--color-bg);
            min-height: 100vh;
        }
        a {
            color: var(--color-accent);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: #7dd3fc;
        }
        a:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.25;
            font-weight: 700;
            color: var(--color-text);
        }

        /* ===== 容器 ===== */
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== 实用工具 ===== */
        .section-padding {
            padding: 80px 0;
        }
        @media (max-width: 768px) {
            .section-padding {
                padding: 56px 0;
            }
        }
        .text-center {
            text-align: center;
        }
        .gradient-text {
            background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .section-label {
            display: inline-block;
            padding: 4px 16px;
            border-radius: 50px;
            background: rgba(0, 212, 255, 0.1);
            color: var(--color-accent);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 1px;
            text-transform: uppercase;
            margin-bottom: 12px;
            border: 1px solid rgba(0, 212, 255, 0.2);
        }
        .section-title {
            font-size: 36px;
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .section-subtitle {
            font-size: 18px;
            color: var(--color-text-secondary);
            max-width: 640px;
            margin: 0 auto 48px auto;
            line-height: 1.7;
        }
        @media (max-width: 768px) {
            .section-title {
                font-size: 26px;
            }
            .section-subtitle {
                font-size: 16px;
                margin-bottom: 32px;
            }
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 15px;
            transition: all var(--transition);
            border: 1px solid transparent;
            cursor: pointer;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--color-accent), var(--color-accent-alt));
            color: #fff;
            border-color: transparent;
            box-shadow: 0 4px 20px rgba(0, 212, 255, 0.3);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(0, 212, 255, 0.4);
            color: #fff;
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-outline {
            background: transparent;
            color: var(--color-accent);
            border-color: var(--color-accent);
        }
        .btn-outline:hover {
            background: rgba(0, 212, 255, 0.08);
            color: var(--color-accent);
            transform: translateY(-2px);
        }
        .btn-outline:active {
            transform: translateY(0);
        }
        .btn-lg {
            padding: 16px 36px;
            font-size: 17px;
        }
        @media (max-width: 520px) {
            .btn-lg {
                padding: 14px 28px;
                font-size: 15px;
            }
        }

        /* ===== 分隔线 ===== */
        .divider {
            width: 80px;
            height: 3px;
            border-radius: 4px;
            background: linear-gradient(90deg, var(--color-accent), var(--color-accent-alt));
            margin: 0 auto 24px auto;
        }

        /* ===== Header / 杂志频道导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(8, 10, 22, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(30, 38, 72, 0.5);
        }
        .header-brand {
            height: var(--header-brand-height);
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 24px;
            max-width: var(--container-max);
            margin: 0 auto;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: var(--color-text);
            letter-spacing: -0.3px;
        }
        .logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--color-accent), var(--color-accent-alt));
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #fff;
            flex-shrink: 0;
        }
        .logo span {
            background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .logo:hover {
            color: var(--color-text);
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .header-search {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 50px;
            padding: 6px 16px 6px 20px;
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: border-color var(--transition);
        }
        .header-search:focus-within {
            border-color: var(--color-accent);
        }
        .header-search input {
            background: none;
            border: none;
            outline: none;
            color: var(--color-text);
            font-size: 14px;
            padding: 4px 0;
            width: 160px;
        }
        .header-search input::placeholder {
            color: var(--color-text-muted);
        }
        .header-search button {
            color: var(--color-text-secondary);
            font-size: 14px;
            padding: 4px 0 4px 8px;
            transition: color var(--transition);
        }
        .header-search button:hover {
            color: var(--color-accent);
        }
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            cursor: pointer;
        }
        .menu-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--color-text);
            border-radius: 4px;
            transition: all var(--transition);
        }
        .menu-toggle.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .menu-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .menu-toggle.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* 频道导航 */
        .header-channels {
            height: var(--header-nav-height);
            border-top: 1px solid rgba(30, 38, 72, 0.3);
            display: flex;
            align-items: stretch;
            padding: 0 24px;
            max-width: var(--container-max);
            margin: 0 auto;
            overflow-x: auto;
            scrollbar-width: none;
        }
        .header-channels::-webkit-scrollbar {
            display: none;
        }
        .channel-list {
            display: flex;
            gap: 4px;
            align-items: stretch;
            height: 100%;
        }
        .channel-item {
            display: flex;
            align-items: center;
            padding: 0 20px;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-secondary);
            border-radius: 6px 6px 0 0;
            transition: all var(--transition);
            position: relative;
            white-space: nowrap;
            border-bottom: 2px solid transparent;
        }
        .channel-item:hover {
            color: var(--color-text);
            background: rgba(255, 255, 255, 0.03);
        }
        .channel-item.active {
            color: var(--color-accent);
            border-bottom-color: var(--color-accent);
            background: rgba(0, 212, 255, 0.05);
        }
        .channel-item.active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 50%;
            transform: translateX(-50%);
            width: 30px;
            height: 3px;
            background: var(--color-accent);
            border-radius: 4px 4px 0 0;
        }
        .channel-item i {
            margin-right: 8px;
            font-size: 13px;
        }

        /* 移动端导航抽屉 */
        .mobile-drawer {
            display: none;
            position: fixed;
            top: var(--header-total);
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(8, 10, 22, 0.98);
            backdrop-filter: blur(20px);
            z-index: 999;
            padding: 24px;
            overflow-y: auto;
            transform: translateY(-20px);
            opacity: 0;
            transition: all 0.3s ease;
            pointer-events: none;
        }
        .mobile-drawer.open {
            transform: translateY(0);
            opacity: 1;
            pointer-events: auto;
        }
        .mobile-drawer .channel-item {
            display: flex;
            padding: 16px 20px;
            border-radius: var(--radius-md);
            font-size: 16px;
            border-bottom: none;
            margin-bottom: 4px;
        }
        .mobile-drawer .channel-item.active {
            background: rgba(0, 212, 255, 0.08);
            border-bottom: none;
        }
        .mobile-drawer .channel-item.active::after {
            display: none;
        }

        @media (max-width: 768px) {
            .header-brand {
                height: 60px;
                padding: 0 16px;
            }
            .logo {
                font-size: 18px;
            }
            .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 14px;
            }
            .header-search {
                display: none;
            }
            .menu-toggle {
                display: flex;
            }
            .header-channels {
                display: none;
            }
            .mobile-drawer {
                display: block;
            }
            :root {
                --header-brand-height: 60px;
                --header-nav-height: 0px;
            }
        }
        @media (min-width: 769px) {
            .mobile-drawer {
                display: none !important;
            }
        }

        /* ===== Hero ===== */
        .hero {
            padding: calc(var(--header-total) + 60px) 0 80px 0;
            position: relative;
            min-height: 85vh;
            display: flex;
            align-items: center;
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.25;
            z-index: 0;
        }
        .hero-bg::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(8, 10, 22, 0.7) 0%, rgba(8, 10, 22, 0.95) 80%, var(--color-bg) 100%);
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(0, 212, 255, 0.06) 0%, transparent 70%),
                radial-gradient(ellipse at 70% 50%, rgba(124, 58, 237, 0.04) 0%, transparent 70%);
            z-index: 1;
        }
        .hero .container {
            position: relative;
            z-index: 2;
        }
        .hero-content {
            max-width: 720px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 18px;
            border-radius: 50px;
            background: rgba(0, 212, 255, 0.1);
            border: 1px solid rgba(0, 212, 255, 0.2);
            font-size: 13px;
            font-weight: 600;
            color: var(--color-accent);
            margin-bottom: 20px;
        }
        .hero-badge i {
            font-size: 12px;
        }
        .hero h1 {
            font-size: 52px;
            font-weight: 900;
            letter-spacing: -1px;
            line-height: 1.1;
            margin-bottom: 20px;
        }
        .hero h1 .gradient-text {
            display: inline-block;
        }
        .hero p {
            font-size: 19px;
            color: var(--color-text-secondary);
            max-width: 580px;
            line-height: 1.7;
            margin-bottom: 36px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }
        .hero-stats {
            display: flex;
            gap: 40px;
            margin-top: 48px;
            padding-top: 32px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .hero-stat h3 {
            font-size: 28px;
            font-weight: 800;
            color: var(--color-accent);
        }
        .hero-stat p {
            font-size: 14px;
            color: var(--color-text-muted);
            margin-bottom: 0;
        }
        @media (max-width: 1024px) {
            .hero h1 {
                font-size: 40px;
            }
            .hero {
                min-height: auto;
                padding: calc(var(--header-total) + 40px) 0 60px 0;
            }
        }
        @media (max-width: 768px) {
            .hero h1 {
                font-size: 30px;
            }
            .hero p {
                font-size: 16px;
            }
            .hero-stats {
                gap: 24px;
                flex-wrap: wrap;
            }
            .hero-stat h3 {
                font-size: 22px;
            }
            .hero-actions {
                flex-direction: column;
            }
            .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }
        }
        @media (max-width: 520px) {
            .hero {
                padding: calc(var(--header-total) + 24px) 0 40px 0;
            }
            .hero h1 {
                font-size: 26px;
            }
            .hero-badge {
                font-size: 12px;
                padding: 4px 14px;
            }
        }

        /* ===== 平台概述 ===== */
        .overview-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .overview-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            position: relative;
        }
        .overview-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 320px;
        }
        .overview-image::after {
            content: '';
            position: absolute;
            inset: 0;
            border-radius: var(--radius-lg);
            border: 1px solid rgba(255, 255, 255, 0.06);
            pointer-events: none;
        }
        .overview-text h2 {
            font-size: 32px;
            margin-bottom: 20px;
        }
        .overview-text p {
            color: var(--color-text-secondary);
            line-height: 1.8;
            margin-bottom: 16px;
        }
        .overview-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
            margin-top: 24px;
        }
        .overview-feature {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 16px;
            background: rgba(255, 255, 255, 0.03);
            border-radius: var(--radius-sm);
            border: 1px solid rgba(255, 255, 255, 0.05);
            font-size: 14px;
            color: var(--color-text-secondary);
        }
        .overview-feature i {
            color: var(--color-accent);
            font-size: 14px;
            width: 20px;
            text-align: center;
        }
        @media (max-width: 900px) {
            .overview-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .overview-image {
                order: -1;
            }
            .overview-image img {
                min-height: 220px;
            }
            .overview-text h2 {
                font-size: 26px;
            }
        }
        @media (max-width: 520px) {
            .overview-features {
                grid-template-columns: 1fr;
            }
        }

        /* ===== 分类入口 ===== */
        .categories-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }
        .category-card {
            background: var(--color-card);
            border: 1px solid var(--color-card-border);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }
        .category-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--color-accent), var(--color-accent-alt));
            opacity: 0;
            transition: opacity var(--transition);
        }
        .category-card:hover {
            transform: translateY(-4px);
            border-color: rgba(0, 212, 255, 0.2);
            box-shadow: var(--shadow-glow);
        }
        .category-card:hover::before {
            opacity: 1;
        }
        .category-card .icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-md);
            background: rgba(0, 212, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--color-accent);
            margin-bottom: 20px;
            transition: all var(--transition);
        }
        .category-card:hover .icon {
            background: rgba(0, 212, 255, 0.15);
            transform: scale(1.05);
        }
        .category-card h3 {
            font-size: 20px;
            margin-bottom: 10px;
        }
        .category-card p {
            color: var(--color-text-secondary);
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 0;
        }
        .category-card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 16px;
            font-size: 14px;
            font-weight: 600;
            color: var(--color-accent);
        }
        .category-card .card-link i {
            font-size: 12px;
            transition: transform var(--transition);
        }
        .category-card:hover .card-link i {
            transform: translateX(4px);
        }

        /* ===== 最新资讯列表 ===== */
        .news-list {
            display: grid;
            gap: 20px;
        }
        .news-item {
            display: flex;
            gap: 24px;
            background: var(--color-card);
            border: 1px solid var(--color-card-border);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            transition: all var(--transition);
            align-items: flex-start;
        }
        .news-item:hover {
            border-color: rgba(0, 212, 255, 0.15);
            box-shadow: var(--shadow-sm);
            transform: translateX(4px);
        }
        .news-thumb {
            width: 120px;
            height: 80px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            flex-shrink: 0;
            background: var(--color-surface);
        }
        .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .news-info {
            flex: 1;
            min-width: 0;
        }
        .news-info .meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 12px;
            color: var(--color-text-muted);
            margin-bottom: 6px;
            flex-wrap: wrap;
        }
        .news-info .meta .tag {
            display: inline-block;
            padding: 2px 10px;
            border-radius: 50px;
            background: rgba(0, 212, 255, 0.08);
            color: var(--color-accent);
            font-weight: 600;
            font-size: 11px;
        }
        .news-info h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .news-info h3 a {
            color: var(--color-text);
        }
        .news-info h3 a:hover {
            color: var(--color-accent);
        }
        .news-info .excerpt {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-empty {
            text-align: center;
            padding: 48px 24px;
            color: var(--color-text-muted);
            background: var(--color-card);
            border: 1px dashed var(--color-card-border);
            border-radius: var(--radius-md);
        }
        @media (max-width: 640px) {
            .news-item {
                flex-direction: column;
                padding: 16px;
                gap: 12px;
            }
            .news-thumb {
                width: 100%;
                height: 160px;
            }
            .news-info h3 {
                font-size: 16px;
            }
        }

        /* ===== 数据统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-card {
            background: var(--color-card);
            border: 1px solid var(--color-card-border);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            text-align: center;
            transition: all var(--transition);
        }
        .stat-card:hover {
            border-color: rgba(0, 212, 255, 0.15);
            box-shadow: var(--shadow-glow);
            transform: translateY(-2px);
        }
        .stat-card .number {
            font-size: 40px;
            font-weight: 900;
            background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.1;
            margin-bottom: 8px;
        }
        .stat-card .label {
            font-size: 15px;
            color: var(--color-text-secondary);
            font-weight: 500;
        }
        .stat-card .icon {
            font-size: 28px;
            color: rgba(0, 212, 255, 0.15);
            margin-bottom: 12px;
        }
        @media (max-width: 900px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-card {
                padding: 20px 16px;
            }
            .stat-card .number {
                font-size: 28px;
            }
        }

        /* ===== 平台优势 ===== */
        .advantages-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .advantage-card {
            background: var(--color-card);
            border: 1px solid var(--color-card-border);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            transition: all var(--transition);
            position: relative;
        }
        .advantage-card:hover {
            border-color: rgba(0, 212, 255, 0.15);
            transform: translateY(-4px);
            box-shadow: var(--shadow-glow);
        }
        .advantage-card .num {
            font-size: 42px;
            font-weight: 900;
            color: rgba(0, 212, 255, 0.06);
            position: absolute;
            top: 12px;
            right: 20px;
            line-height: 1;
            pointer-events: none;
        }
        .advantage-card .icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-sm);
            background: rgba(0, 212, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--color-accent);
            margin-bottom: 16px;
        }
        .advantage-card h3 {
            font-size: 18px;
            margin-bottom: 10px;
        }
        .advantage-card p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }
        @media (max-width: 900px) {
            .advantages-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 640px) {
            .advantages-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: grid;
            gap: 12px;
        }
        .faq-item {
            background: var(--color-card);
            border: 1px solid var(--color-card-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: border-color var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(0, 212, 255, 0.1);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text);
            cursor: pointer;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: background var(--transition);
            gap: 16px;
        }
        .faq-question:hover {
            background: rgba(255, 255, 255, 0.02);
        }
        .faq-question i {
            font-size: 14px;
            color: var(--color-text-muted);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--color-accent);
        }
        .faq-answer {
            padding: 0 24px 18px 24px;
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }
        .faq-item.open {
            border-color: rgba(0, 212, 255, 0.15);
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, rgba(0, 212, 255, 0.04), rgba(124, 58, 237, 0.04));
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }
        .cta-box {
            text-align: center;
            padding: 32px 24px;
            background: var(--color-card);
            border: 1px solid var(--color-card-border);
            border-radius: var(--radius-lg);
            max-width: 800px;
            margin: 0 auto;
            box-shadow: var(--shadow-md);
        }
        .cta-box h2 {
            font-size: 30px;
            margin-bottom: 12px;
        }
        .cta-box p {
            color: var(--color-text-secondary);
            font-size: 16px;
            margin-bottom: 24px;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-box .btn {
            margin: 0 8px;
        }
        @media (max-width: 640px) {
            .cta-box h2 {
                font-size: 24px;
            }
            .cta-box .btn {
                margin: 8px 0;
                width: 100%;
                justify-content: center;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--color-surface);
            border-top: 1px solid var(--color-border);
            padding: 56px 0 32px 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo {
            font-size: 20px;
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--color-text-muted);
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--color-text);
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: var(--color-text-muted);
            transition: color var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--color-accent);
        }
        .footer-bottom {
            border-top: 1px solid var(--color-border);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: var(--color-text-muted);
        }
        .footer-bottom a {
            color: var(--color-text-muted);
        }
        .footer-bottom a:hover {
            color: var(--color-accent);
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.05);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-text-muted);
            font-size: 14px;
            transition: all var(--transition);
            border: 1px solid transparent;
        }
        .footer-social a:hover {
            background: rgba(0, 212, 255, 0.1);
            color: var(--color-accent);
            border-color: rgba(0, 212, 255, 0.2);
            transform: translateY(-2px);
        }
        @media (max-width: 900px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== Back to top ===== */
        .back-to-top {
            position: fixed;
            bottom: 32px;
            right: 32px;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            color: var(--color-text-secondary);
            font-size: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 50;
            cursor: pointer;
            transition: all var(--transition);
            opacity: 0;
            pointer-events: none;
            transform: translateY(20px);
            box-shadow: var(--shadow-sm);
        }
        .back-to-top.visible {
            opacity: 1;
            pointer-events: auto;
            transform: translateY(0);
        }
        .back-to-top:hover {
            background: var(--color-accent);
            color: #fff;
            border-color: var(--color-accent);
            transform: translateY(-4px);
            box-shadow: 0 8px 30px rgba(0, 212, 255, 0.25);
        }
        @media (max-width: 520px) {
            .back-to-top {
                bottom: 20px;
                right: 20px;
                width: 42px;
                height: 42px;
                font-size: 16px;
            }
        }

        /* ===== 滚动动画辅助 ===== */
        .fade-up {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        .fade-up.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* ===== 响应式微调 ===== */
        @media (max-width: 1024px) {
            .container {
                padding: 0 20px;
            }
        }
        @media (max-width: 520px) {
            .section-padding {
                padding: 40px 0;
            }
            .section-title {
                font-size: 22px;
            }
            .section-subtitle {
                font-size: 15px;
            }
        }

        /* 选中文字颜色 */
        ::selection {
            background: rgba(0, 212, 255, 0.25);
            color: var(--color-text);
        }

        /* 滚动条 */
        ::-webkit-scrollbar {
            width: 6px;
            height: 6px;
        }
        ::-webkit-scrollbar-track {
            background: var(--color-bg);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--color-border);
            border-radius: 4px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--color-text-muted);
        }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #0b1a2e;
            --primary-light: #132a44;
            --primary-dark: #060f1a;
            --accent: #00b894;
            --accent-light: #00d2a0;
            --accent-dark: #009b7a;
            --accent-glow: rgba(0, 184, 148, 0.25);
            --bg: #f4f6fa;
            --bg-card: #ffffff;
            --bg-dark: #0b1a2e;
            --text: #1a2332;
            --text-light: #5a6a7e;
            --text-lighter: #8a9aa8;
            --text-white: #f0f4f8;
            --border: #e2e8f0;
            --border-light: #f0f2f5;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
            --shadow-md: 0 8px 24px rgba(0,0,0,0.07);
            --shadow-lg: 0 20px 48px rgba(0,0,0,0.10);
            --shadow-glow: 0 0 30px rgba(0,184,148,0.15);
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --header-h: 60px;
            --nav-h: 48px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--accent-dark); }
        a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 2px; }
        img { max-width: 100%; height: auto; display: block; }
        button, input, textarea { font-family: inherit; font-size: 1rem; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--primary); }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container { padding: 0 16px; }
        }

        /* ===== Header & Brand ===== */
        .site-header {
            background: var(--primary);
            border-bottom: 1px solid rgba(255,255,255,0.06);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 4px 20px rgba(0,0,0,0.20);
        }
        .header-brand {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-h);
            padding: 0 24px;
            max-width: var(--max-width);
            margin: 0 auto;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #fff;
            font-size: 1.35rem;
            font-weight: 700;
            letter-spacing: 0.5px;
            transition: opacity var(--transition);
        }
        .logo:hover { opacity: 0.88; color: #fff; }
        .logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--accent), #00a382);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: #fff;
            box-shadow: 0 0 16px var(--accent-glow);
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .header-actions .search-toggle,
        .header-actions .menu-toggle {
            background: rgba(255,255,255,0.08);
            border: none;
            color: #bcc8d8;
            width: 36px;
            height: 36px;
            border-radius: 10px;
            cursor: pointer;
            transition: background var(--transition), color var(--transition);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
        }
        .header-actions .search-toggle:hover,
        .header-actions .menu-toggle:hover { background: rgba(255,255,255,0.16); color: #fff; }

        /* ===== Channels Nav ===== */
        .header-channels {
            background: var(--primary-dark);
            border-top: 1px solid rgba(255,255,255,0.04);
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }
        .header-channels::-webkit-scrollbar { display: none; }
        .channel-list {
            display: flex;
            align-items: center;
            gap: 4px;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
            height: var(--nav-h);
        }
        .channel-item {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            border-radius: 8px;
            color: #8899b0;
            font-size: 0.88rem;
            font-weight: 500;
            white-space: nowrap;
            transition: background var(--transition), color var(--transition);
        }
        .channel-item i { font-size: 0.82rem; opacity: 0.7; }
        .channel-item:hover { background: rgba(255,255,255,0.08); color: #d0dce8; }
        .channel-item.active, .channel-item.active:hover {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 0 20px var(--accent-glow);
        }
        .channel-item.active i { opacity: 1; }

        /* ===== Article Hero ===== */
        .article-hero {
            position: relative;
            min-height: 320px;
            display: flex;
            align-items: flex-end;
            background: var(--primary-dark);
            overflow: hidden;
        }
        .article-hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.35;
            mix-blend-mode: overlay;
        }
        .article-hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(11,26,46,0.92) 20%, rgba(11,26,46,0.50) 70%, rgba(11,26,46,0.30) 100%);
        }
        .article-hero .container {
            position: relative;
            z-index: 2;
            padding-top: 60px;
            padding-bottom: 40px;
        }
        .article-hero .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.82rem;
            color: rgba(255,255,255,0.55);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }
        .article-hero .breadcrumb a { color: rgba(255,255,255,0.7); }
        .article-hero .breadcrumb a:hover { color: var(--accent); }
        .article-hero .breadcrumb .sep { opacity: 0.4; }
        .article-hero .breadcrumb .current { color: rgba(255,255,255,0.85); }
        .article-hero h1 {
            font-size: 2.4rem;
            font-weight: 800;
            color: #fff;
            max-width: 820px;
            line-height: 1.25;
            text-shadow: 0 2px 20px rgba(0,0,0,0.30);
            margin-bottom: 16px;
        }
        .article-meta {
            display: flex;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
            color: rgba(255,255,255,0.65);
            font-size: 0.88rem;
        }
        .article-meta .meta-item {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-meta .meta-item i { opacity: 0.6; }
        .article-meta .category-tag {
            background: var(--accent);
            color: #fff;
            padding: 2px 12px;
            border-radius: 20px;
            font-size: 0.78rem;
            font-weight: 600;
            box-shadow: 0 0 16px var(--accent-glow);
        }

        /* ===== Main Content ===== */
        .article-main {
            flex: 1;
            padding: 48px 0 64px;
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
        }
        .article-body {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 40px 44px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
        }
        .article-body .featured-image {
            border-radius: var(--radius-md);
            overflow: hidden;
            margin-bottom: 32px;
            box-shadow: var(--shadow-sm);
        }
        .article-body .featured-image img {
            width: 100%;
            height: auto;
            max-height: 480px;
            object-fit: cover;
        }
        .article-body .content-body {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text);
        }
        .article-body .content-body p {
            margin-bottom: 1.4em;
        }
        .article-body .content-body h2,
        .article-body .content-body h3 {
            margin-top: 1.8em;
            margin-bottom: 0.6em;
            color: var(--primary);
        }
        .article-body .content-body h2 { font-size: 1.5rem; }
        .article-body .content-body h3 { font-size: 1.2rem; }
        .article-body .content-body ul,
        .article-body .content-body ol {
            margin-bottom: 1.4em;
            padding-left: 1.6em;
        }
        .article-body .content-body ul li { list-style: disc; margin-bottom: 0.3em; }
        .article-body .content-body ol li { list-style: decimal; margin-bottom: 0.3em; }
        .article-body .content-body blockquote {
            border-left: 4px solid var(--accent);
            background: rgba(0,184,148,0.06);
            padding: 16px 24px;
            margin-bottom: 1.4em;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-light);
            font-style: italic;
        }
        .article-body .content-body img {
            border-radius: var(--radius-md);
            margin: 1.2em 0;
            box-shadow: var(--shadow-sm);
        }
        .article-body .content-body a { color: var(--accent); text-decoration: underline; text-underline-offset: 2px; }
        .article-body .content-body a:hover { color: var(--accent-dark); }

        /* ===== Sidebar ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 32px;
        }
        .sidebar-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
        }
        .sidebar-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--primary);
        }
        .sidebar-card h3 i { color: var(--accent); font-size: 0.95rem; }
        .sidebar-list li {
            padding: 10px 0;
            border-bottom: 1px solid var(--border-light);
        }
        .sidebar-list li:last-child { border-bottom: none; }
        .sidebar-list a {
            color: var(--text);
            font-size: 0.92rem;
            font-weight: 500;
            display: flex;
            align-items: flex-start;
            gap: 8px;
            transition: color var(--transition);
        }
        .sidebar-list a:hover { color: var(--accent); }
        .sidebar-list a .num {
            color: var(--text-lighter);
            font-size: 0.82rem;
            font-weight: 400;
            min-width: 24px;
        }
        .sidebar-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .sidebar-tags .tag {
            padding: 4px 14px;
            border-radius: 20px;
            background: rgba(0,184,148,0.08);
            color: var(--accent-dark);
            font-size: 0.80rem;
            font-weight: 500;
            border: 1px solid rgba(0,184,148,0.15);
            transition: background var(--transition), color var(--transition);
        }
        .sidebar-tags .tag:hover { background: var(--accent); color: #fff; border-color: var(--accent); }

        /* ===== Article Nav ===== */
        .article-nav {
            display: flex;
            justify-content: space-between;
            gap: 16px;
            margin-top: 48px;
            padding-top: 32px;
            border-top: 1px solid var(--border);
        }
        .article-nav a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 12px 20px;
            border-radius: var(--radius-sm);
            background: var(--bg);
            color: var(--text);
            font-size: 0.92rem;
            font-weight: 500;
            transition: background var(--transition), color var(--transition);
            flex: 1;
            max-width: 48%;
        }
        .article-nav a:hover { background: var(--accent); color: #fff; }
        .article-nav .next { text-align: right; justify-content: flex-end; }

        /* ===== Related Section ===== */
        .related-section {
            margin-top: 48px;
        }
        .related-section h2 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 24px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .related-section h2 i { color: var(--accent); }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .related-card .rc-image {
            height: 180px;
            background: var(--primary-light);
            overflow: hidden;
        }
        .related-card .rc-image img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s; }
        .related-card:hover .rc-image img { transform: scale(1.05); }
        .related-card .rc-body { padding: 18px 20px; }
        .related-card .rc-body h4 { font-size: 1rem; margin-bottom: 8px; }
        .related-card .rc-body h4 a { color: var(--primary); }
        .related-card .rc-body h4 a:hover { color: var(--accent); }
        .related-card .rc-body p { font-size: 0.88rem; color: var(--text-light); line-height: 1.6; }
        .related-card .rc-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: 12px;
            font-size: 0.78rem;
            color: var(--text-lighter);
        }

        /* ===== 404 State ===== */
        .not-found-box {
            text-align: center;
            padding: 80px 24px;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
        }
        .not-found-box .nf-icon {
            font-size: 4rem;
            color: var(--text-lighter);
            margin-bottom: 24px;
            opacity: 0.5;
        }
        .not-found-box h2 { font-size: 1.8rem; margin-bottom: 12px; }
        .not-found-box p { color: var(--text-light); margin-bottom: 24px; }
        .not-found-box .btn { display: inline-block; }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 28px;
            border-radius: 10px;
            font-weight: 600;
            font-size: 0.92rem;
            border: none;
            cursor: pointer;
            transition: background var(--transition), color var(--transition), transform var(--transition), box-shadow var(--transition);
            text-decoration: none;
        }
        .btn-primary {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 16px var(--accent-glow);
        }
        .btn-primary:hover { background: var(--accent-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 28px var(--accent-glow); }
        .btn-outline {
            background: transparent;
            color: var(--accent);
            border: 2px solid var(--accent);
        }
        .btn-outline:hover { background: var(--accent); color: #fff; transform: translateY(-2px); }
        .btn-ghost {
            background: rgba(255,255,255,0.08);
            color: #d0dce8;
        }
        .btn-ghost:hover { background: rgba(255,255,255,0.15); color: #fff; }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary);
            color: rgba(255,255,255,0.75);
            padding: 48px 0 28px;
            margin-top: auto;
            border-top: 1px solid rgba(255,255,255,0.05);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }
        .footer-brand .logo { margin-bottom: 16px; font-size: 1.2rem; }
        .footer-brand p { font-size: 0.88rem; line-height: 1.7; color: rgba(255,255,255,0.55); max-width: 320px; }
        .footer-col h4 {
            font-size: 0.92rem;
            font-weight: 700;
            color: #d0dce8;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .footer-col ul li { margin-bottom: 10px; }
        .footer-col ul li a {
            color: rgba(255,255,255,0.55);
            font-size: 0.86rem;
            transition: color var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .footer-col ul li a:hover { color: var(--accent); }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding-top: 24px;
            border-top: 1px solid rgba(255,255,255,0.06);
            font-size: 0.82rem;
            color: rgba(255,255,255,0.40);
        }
        .footer-bottom a { color: rgba(255,255,255,0.50); }
        .footer-bottom a:hover { color: var(--accent); }
        .footer-social { display: flex; gap: 12px; }
        .footer-social a {
            width: 32px; height: 32px;
            border-radius: 8px;
            background: rgba(255,255,255,0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255,255,255,0.45);
            font-size: 0.95rem;
            transition: background var(--transition), color var(--transition);
        }
        .footer-social a:hover { background: var(--accent); color: #fff; }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .article-layout { grid-template-columns: 1fr; }
            .article-sidebar { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
            .related-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
        }
        @media (max-width: 768px) {
            .article-hero { min-height: 240px; }
            .article-hero h1 { font-size: 1.6rem; }
            .article-body { padding: 24px 20px; }
            .article-meta { gap: 12px; font-size: 0.82rem; }
            .article-sidebar { grid-template-columns: 1fr; }
            .related-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .article-nav { flex-direction: column; }
            .article-nav a { max-width: 100%; }
            .header-brand { padding: 0 16px; }
            .channel-list { padding: 0 12px; gap: 2px; }
            .channel-item { padding: 6px 12px; font-size: 0.82rem; }
        }
        @media (max-width: 520px) {
            .article-hero h1 { font-size: 1.3rem; }
            .article-body { padding: 18px 14px; }
            .article-body .content-body { font-size: 0.95rem; }
            .logo { font-size: 1.1rem; }
            .logo-icon { width: 30px; height: 30px; font-size: 0.9rem; }
        }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #1a2a4a;
            --primary-light: #2a3f6a;
            --primary-dark: #0f1a30;
            --accent: #2d8cf0;
            --accent-light: #4da3ff;
            --accent-dark: #1a6fc4;
            --accent-green: #27c4a0;
            --accent-green-light: #3ddbb5;
            --bg-body: #f5f7fc;
            --bg-white: #ffffff;
            --bg-card: #ffffff;
            --bg-dark: #0f1a30;
            --bg-section-alt: #eef2f8;
            --text-primary: #1a2a4a;
            --text-secondary: #4a5a7a;
            --text-muted: #7a8aaa;
            --text-white: #ffffff;
            --text-light: #b0c0dd;
            --border-color: #e2e8f0;
            --border-light: #f0f2f5;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(26,42,74,0.06);
            --shadow-md: 0 6px 24px rgba(26,42,74,0.10);
            --shadow-lg: 0 12px 40px rgba(26,42,74,0.14);
            --shadow-xl: 0 20px 60px rgba(26,42,74,0.18);
            --transition: 0.25s cubic-bezier(0.4,0,0.2,1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --container-w: 1200px;
            --header-h: 56px;
            --nav-h: 48px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.6;
            color: var(--text-primary);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--accent-dark); }
        a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
        button, input, textarea { font-family: inherit; font-size: inherit; }
        button { cursor: pointer; border: none; background: none; }
        button:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 6px; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text-primary); }
        h1 { font-size: 2.4rem; }
        h2 { font-size: 1.8rem; }
        h3 { font-size: 1.3rem; }
        h4 { font-size: 1.1rem; }
        p { margin-bottom: 0.8rem; color: var(--text-secondary); }
        .container {
            width: 100%;
            max-width: var(--container-w);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) { .container { padding: 0 16px; } }

        /* ===== Header & Navigation ===== */
        .site-header {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: var(--shadow-sm);
        }
        .header-brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-h);
            padding: 0 24px;
            max-width: var(--container-w);
            margin: 0 auto;
        }
        .header-brand-row .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--primary);
        }
        .header-brand-row .logo .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--accent), var(--accent-green));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
        }
        .header-brand-row .logo:hover { color: var(--primary); }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .header-actions .search-toggle,
        .header-actions .menu-toggle {
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            font-size: 1.1rem;
            transition: background var(--transition), color var(--transition);
        }
        .header-actions .search-toggle:hover,
        .header-actions .menu-toggle:hover {
            background: var(--bg-section-alt);
            color: var(--primary);
        }
        .header-actions .menu-toggle { display: none; }
        .header-channels {
            background: var(--bg-white);
            border-top: 1px solid var(--border-light);
            padding: 0 24px;
        }
        .channel-list {
            display: flex;
            align-items: center;
            gap: 4px;
            max-width: var(--container-w);
            margin: 0 auto;
            height: var(--nav-h);
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }
        .channel-list::-webkit-scrollbar { display: none; }
        .channel-item {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 6px 18px;
            border-radius: 20px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            white-space: nowrap;
            transition: background var(--transition), color var(--transition);
        }
        .channel-item i { font-size: 0.85rem; }
        .channel-item:hover {
            background: var(--bg-section-alt);
            color: var(--primary);
        }
        .channel-item.active {
            background: var(--primary);
            color: var(--text-white);
        }
        .channel-item.active:hover {
            background: var(--primary-light);
            color: var(--text-white);
        }
        .header-search-box {
            display: none;
            padding: 12px 24px;
            background: var(--bg-white);
            border-top: 1px solid var(--border-light);
        }
        .header-search-box.show { display: block; }
        .header-search-box .search-form {
            display: flex;
            max-width: var(--container-w);
            margin: 0 auto;
            gap: 8px;
        }
        .header-search-box .search-form input {
            flex: 1;
            padding: 10px 16px;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            outline: none;
            transition: border var(--transition);
        }
        .header-search-box .search-form input:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(45,140,240,0.12);
        }
        .header-search-box .search-form button {
            padding: 10px 22px;
            background: var(--accent);
            color: #fff;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.9rem;
            transition: background var(--transition);
        }
        .header-search-box .search-form button:hover { background: var(--accent-dark); }

        @media (max-width: 768px) {
            .header-actions .menu-toggle { display: flex; }
            .channel-list {
                gap: 2px;
                height: auto;
                padding: 8px 0;
                flex-wrap: nowrap;
            }
            .channel-item {
                padding: 6px 14px;
                font-size: 0.82rem;
            }
            .header-brand-row { padding: 0 16px; }
            .header-channels { padding: 0 16px; }
            .header-brand-row .logo { font-size: 1.1rem; }
        }
        @media (max-width: 520px) {
            .channel-item { padding: 5px 10px; font-size: 0.75rem; gap: 4px; }
            .channel-item i { font-size: 0.7rem; }
        }

        /* ===== Hero / Banner ===== */
        .category-hero {
            position: relative;
            min-height: 320px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background: var(--primary-dark);
            overflow: hidden;
            padding: 60px 24px;
        }
        .category-hero .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.4;
            pointer-events: none;
        }
        .category-hero .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,26,48,0.85) 0%, rgba(26,42,74,0.75) 100%);
            pointer-events: none;
        }
        .category-hero .hero-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
            color: var(--text-white);
        }
        .category-hero .hero-content h1 {
            font-size: 2.8rem;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }
        .category-hero .hero-content h1 i {
            color: var(--accent-green);
            margin-right: 8px;
        }
        .category-hero .hero-content p {
            font-size: 1.15rem;
            color: var(--text-light);
            max-width: 640px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }
        .category-hero .hero-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
        }
        .category-hero .hero-tags .tag {
            display: inline-block;
            padding: 6px 18px;
            border-radius: 20px;
            background: rgba(255,255,255,0.12);
            color: var(--text-light);
            font-size: 0.85rem;
            font-weight: 500;
            backdrop-filter: blur(4px);
            transition: background var(--transition), color var(--transition);
        }
        .category-hero .hero-tags .tag:hover {
            background: var(--accent);
            color: #fff;
        }
        @media (max-width: 768px) {
            .category-hero { min-height: 240px; padding: 48px 16px; }
            .category-hero .hero-content h1 { font-size: 2rem; }
            .category-hero .hero-content p { font-size: 1rem; }
        }
        @media (max-width: 520px) {
            .category-hero .hero-content h1 { font-size: 1.6rem; }
            .category-hero .hero-content p { font-size: 0.9rem; }
            .category-hero .hero-tags .tag { font-size: 0.78rem; padding: 4px 14px; }
        }

        /* ===== Section Common ===== */
        .section {
            padding: 64px 0;
        }
        .section-alt {
            background: var(--bg-section-alt);
        }
        .section-white {
            background: var(--bg-white);
        }
        .section-header {
            text-align: center;
            margin-bottom: 44px;
        }
        .section-header h2 {
            font-size: 1.8rem;
            margin-bottom: 10px;
        }
        .section-header h2 i {
            color: var(--accent);
            margin-right: 8px;
        }
        .section-header p {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto;
        }
        @media (max-width: 768px) {
            .section { padding: 40px 0; }
            .section-header { margin-bottom: 30px; }
            .section-header h2 { font-size: 1.5rem; }
        }

        /* ===== Cards ===== */
        .card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .card-img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            display: block;
        }
        .card-body {
            padding: 20px 22px 24px;
        }
        .card-body h3 {
            font-size: 1.15rem;
            margin-bottom: 8px;
        }
        .card-body h3 a {
            color: var(--text-primary);
        }
        .card-body h3 a:hover {
            color: var(--accent);
        }
        .card-body p {
            font-size: 0.93rem;
            color: var(--text-muted);
            line-height: 1.65;
        }
        .card-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-top: 12px;
            font-size: 0.82rem;
            color: var(--text-muted);
        }
        .card-meta i { margin-right: 4px; }
        .card-tag {
            display: inline-block;
            padding: 2px 12px;
            border-radius: 12px;
            background: rgba(45,140,240,0.08);
            color: var(--accent);
            font-size: 0.78rem;
            font-weight: 600;
            margin-bottom: 10px;
        }
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        @media (max-width: 1024px) {
            .card-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 600px) {
            .card-grid { grid-template-columns: 1fr; }
        }

        /* ===== Category Tabs / Filter ===== */
        .category-tabs {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
            margin-bottom: 36px;
        }
        .category-tabs .tab-btn {
            padding: 8px 22px;
            border-radius: 24px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            transition: all var(--transition);
        }
        .category-tabs .tab-btn:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: rgba(45,140,240,0.04);
        }
        .category-tabs .tab-btn.active {
            background: var(--accent);
            color: #fff;
            border-color: var(--accent);
        }

        /* ===== Stats / KPIs ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .stat-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 28px 20px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .stat-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
        }
        .stat-card .stat-icon {
            font-size: 2rem;
            color: var(--accent);
            margin-bottom: 10px;
        }
        .stat-card .stat-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }
        .stat-card .stat-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-top: 6px;
        }
        @media (max-width: 900px) {
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 520px) {
            .stats-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
            .stat-card { padding: 20px 14px; }
            .stat-card .stat-number { font-size: 1.6rem; }
        }

        /* ===== Timeline / Schedule ===== */
        .timeline {
            position: relative;
            max-width: 700px;
            margin: 0 auto;
            padding-left: 30px;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 8px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--border-color);
        }
        .timeline-item {
            position: relative;
            padding: 0 0 32px 28px;
        }
        .timeline-item:last-child { padding-bottom: 0; }
        .timeline-item .dot {
            position: absolute;
            left: -22px;
            top: 4px;
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background: var(--accent);
            border: 3px solid var(--bg-body);
            box-shadow: 0 0 0 2px var(--accent);
        }
        .timeline-item .time {
            font-size: 0.82rem;
            color: var(--text-muted);
            font-weight: 600;
            margin-bottom: 4px;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .timeline-item .time i { color: var(--accent); }
        .timeline-item h4 {
            font-size: 1.05rem;
            margin-bottom: 4px;
        }
        .timeline-item p {
            font-size: 0.9rem;
            color: var(--text-muted);
        }
        @media (max-width: 600px) {
            .timeline { padding-left: 20px; }
            .timeline-item { padding: 0 0 24px 20px; }
            .timeline-item .dot { left: -18px; width: 14px; height: 14px; }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: box-shadow var(--transition);
        }
        .faq-item:hover { box-shadow: var(--shadow-md); }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-primary);
            text-align: left;
            background: none;
            gap: 12px;
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(45,140,240,0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-size: 0.85rem;
            transition: transform var(--transition);
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(180deg);
            background: var(--accent);
            color: #fff;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
        }
        .faq-answer-inner {
            padding: 0 22px 18px;
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--primary-dark);
            position: relative;
            overflow: hidden;
            padding: 72px 24px;
            text-align: center;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.15;
            pointer-events: none;
        }
        .cta-section .cta-content {
            position: relative;
            z-index: 2;
            max-width: 640px;
            margin: 0 auto;
        }
        .cta-section .cta-content h2 {
            color: var(--text-white);
            font-size: 2rem;
            margin-bottom: 14px;
        }
        .cta-section .cta-content p {
            color: var(--text-light);
            font-size: 1.05rem;
            margin-bottom: 28px;
        }
        .cta-section .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            border-radius: 30px;
            background: var(--accent);
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
            box-shadow: 0 4px 20px rgba(45,140,240,0.3);
        }
        .cta-section .btn-cta:hover {
            background: var(--accent-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(45,140,240,0.4);
            color: #fff;
        }
        .cta-section .btn-cta i { font-size: 1rem; }
        @media (max-width: 768px) {
            .cta-section { padding: 48px 16px; }
            .cta-section .cta-content h2 { font-size: 1.5rem; }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: var(--text-light);
            padding: 48px 24px 24px;
        }
        .site-footer .container { max-width: var(--container-w); margin: 0 auto; }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 36px;
            margin-bottom: 32px;
        }
        .footer-brand .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 14px;
        }
        .footer-brand .logo .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--accent), var(--accent-green));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: var(--text-muted);
            max-width: 360px;
            line-height: 1.7;
        }
        .footer-col h4 {
            font-size: 0.95rem;
            color: var(--text-white);
            margin-bottom: 14px;
            font-weight: 600;
        }
        .footer-col ul li { margin-bottom: 8px; }
        .footer-col ul li a {
            font-size: 0.88rem;
            color: var(--text-muted);
            transition: color var(--transition);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .footer-col ul li a:hover { color: var(--accent-light); }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 20px;
            border-top: 1px solid rgba(255,255,255,0.06);
            font-size: 0.82rem;
            color: var(--text-muted);
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom a { color: var(--text-muted); }
        .footer-bottom a:hover { color: var(--accent-light); }
        .footer-social { display: flex; gap: 12px; }
        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255,255,255,0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            font-size: 1rem;
            transition: background var(--transition), color var(--transition);
        }
        .footer-social a:hover {
            background: var(--accent);
            color: #fff;
        }
        @media (max-width: 900px) {
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .footer-brand { grid-column: 1 / -1; }
        }
        @media (max-width: 600px) {
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }

        /* ===== Button ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 26px;
            border-radius: 24px;
            font-size: 0.9rem;
            font-weight: 600;
            transition: all var(--transition);
            border: none;
        }
        .btn-primary {
            background: var(--accent);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--accent-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(45,140,240,0.25);
        }
        .btn-outline {
            background: transparent;
            color: var(--accent);
            border: 1.5px solid var(--accent);
        }
        .btn-outline:hover {
            background: var(--accent);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== Badge ===== */
        .badge {
            display: inline-block;
            padding: 2px 12px;
            border-radius: 12px;
            font-size: 0.75rem;
            font-weight: 600;
        }
        .badge-accent { background: rgba(45,140,240,0.10); color: var(--accent); }
        .badge-green { background: rgba(39,196,160,0.10); color: var(--accent-green); }
        .badge-warm { background: rgba(240,180,45,0.12); color: #c5940a; }

        /* ===== Scroll to top ===== */
        .scroll-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: var(--shadow-md);
            opacity: 0;
            visibility: hidden;
            transition: opacity var(--transition), visibility var(--transition), transform var(--transition);
            z-index: 99;
        }
        .scroll-top.show {
            opacity: 1;
            visibility: visible;
        }
        .scroll-top:hover {
            transform: translateY(-4px);
            background: var(--primary-light);
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb-wrap {
            padding: 14px 0;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .breadcrumb a { color: var(--text-muted); }
        .breadcrumb a:hover { color: var(--accent); }
        .breadcrumb .sep { color: var(--border-color); }

        /* ===== Responsive extras ===== */
        @media (max-width: 1024px) {
            .category-hero .hero-content h1 { font-size: 2.4rem; }
        }
        @media (max-width: 480px) {
            .category-hero .hero-content h1 { font-size: 1.4rem; }
            .category-hero .hero-content p { font-size: 0.85rem; }
            .category-tabs .tab-btn { padding: 6px 14px; font-size: 0.8rem; }
        }