/* roulang page: index */
:root {
            --primary: #1e40af;
            --primary-dark: #0f2370;
            --accent: #f59e0b;
            --accent-dark: #b45309;
            --dark: #0f172a;
            --muted: #64748b;
            --light-bg: #f8fafc;
            --border-color: #e2e8f0;
            --card-shadow: 0 4px 20px rgba(0,0,0,0.06), 0 1px 4px rgba(0,0,0,0.04);
            --card-shadow-hover: 0 12px 40px rgba(0,0,0,0.10), 0 4px 12px rgba(0,0,0,0.06);
            --radius: 0.75rem;
            --radius-lg: 1rem;
            --radius-xl: 1.5rem;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Inter', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            background: #ffffff;
            color: var(--dark);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: inherit;
        }
        input, textarea {
            font-family: inherit;
            outline: none;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 1rem;
            }
        }

        /* 搜索主导航 */
        .header-main {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255,255,255,0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            box-shadow: var(--card-shadow);
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
            gap: 1.5rem;
        }
        .logo {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--dark);
            white-space: nowrap;
            letter-spacing: -0.02em;
            flex-shrink: 0;
        }
        .logo span {
            color: var(--accent);
        }
        .search-box {
            flex: 1;
            max-width: 520px;
            position: relative;
            margin: 0 1rem;
        }
        .search-box input {
            width: 100%;
            height: 44px;
            padding: 0 1.25rem 0 3rem;
            border: 2px solid var(--border-color);
            border-radius: 999px;
            background: var(--light-bg);
            font-size: 0.95rem;
            color: var(--dark);
            transition: var(--transition);
        }
        .search-box input:focus {
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 4px rgba(30,64,175,0.10);
        }
        .search-box input::placeholder {
            color: var(--muted);
        }
        .search-box .search-icon {
            position: absolute;
            left: 1.1rem;
            top: 50%;
            transform: translateY(-50%);
            color: var(--muted);
            font-size: 1.1rem;
            pointer-events: none;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            flex-shrink: 0;
        }
        .nav-links a {
            padding: 0.5rem 1rem;
            border-radius: 999px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--muted);
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-links a:hover {
            color: var(--dark);
            background: var(--light-bg);
        }
        .nav-links a.active {
            color: var(--primary);
            background: rgba(30,64,175,0.08);
            font-weight: 600;
        }
        .mobile-toggle {
            display: none;
            font-size: 1.5rem;
            color: var(--dark);
            padding: 0.5rem;
            flex-shrink: 0;
        }
        @media (max-width: 1024px) {
            .search-box {
                max-width: 360px;
            }
        }
        @media (max-width: 768px) {
            .nav-wrapper {
                height: 62px;
                gap: 0.75rem;
            }
            .logo {
                font-size: 1.1rem;
            }
            .search-box {
                max-width: 200px;
                margin: 0 0.5rem;
            }
            .search-box input {
                height: 38px;
                padding: 0 0.75rem 0 2.4rem;
                font-size: 0.85rem;
            }
            .search-box .search-icon {
                left: 0.8rem;
                font-size: 0.95rem;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: 62px;
                left: 0;
                right: 0;
                background: rgba(255,255,255,0.98);
                backdrop-filter: blur(12px);
                flex-direction: column;
                padding: 1rem 1.5rem;
                border-bottom: 1px solid var(--border-color);
                box-shadow: var(--card-shadow);
                gap: 0.25rem;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                padding: 0.7rem 1rem;
                width: 100%;
                border-radius: 0.5rem;
            }
            .mobile-toggle {
                display: block;
            }
        }
        @media (max-width: 480px) {
            .search-box {
                max-width: 140px;
            }
            .search-box input {
                padding: 0 0.5rem 0 2.2rem;
                font-size: 0.8rem;
            }
            .logo {
                font-size: 0.95rem;
            }
        }

        /* Hero */
        .hero-section {
            position: relative;
            min-height: 70vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,23,42,0.82) 0%, rgba(15,23,42,0.55) 60%, rgba(15,23,42,0.30) 100%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            padding: 4rem 2rem;
            max-width: 860px;
        }
        .hero-content h1 {
            font-size: clamp(2.2rem, 6vw, 4rem);
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            letter-spacing: -0.02em;
            margin-bottom: 1.2rem;
            text-shadow: 0 2px 20px rgba(0,0,0,0.3);
        }
        .hero-content h1 span {
            color: var(--accent);
        }
        .hero-content p {
            font-size: clamp(1rem, 2vw, 1.25rem);
            color: rgba(255,255,255,0.85);
            line-height: 1.7;
            margin-bottom: 2rem;
            max-width: 640px;
            margin-left: auto;
            margin-right: auto;
        }
        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 0.75rem;
            margin-bottom: 2rem;
        }
        .hero-tags span {
            padding: 0.4rem 1.2rem;
            border-radius: 999px;
            background: rgba(255,255,255,0.15);
            backdrop-filter: blur(4px);
            color: #fff;
            font-size: 0.85rem;
            font-weight: 500;
            border: 1px solid rgba(255,255,255,0.20);
        }
        .hero-buttons {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 1rem;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.85rem 2.2rem;
            border-radius: 999px;
            background: var(--accent);
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            box-shadow: 0 4px 16px rgba(245,158,11,0.35);
        }
        .btn-primary:hover {
            background: var(--accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(245,158,11,0.40);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.85rem 2.2rem;
            border-radius: 999px;
            background: transparent;
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            border: 2px solid rgba(255,255,255,0.40);
            transition: var(--transition);
        }
        .btn-outline:hover {
            border-color: #fff;
            background: rgba(255,255,255,0.10);
            transform: translateY(-2px);
        }
        @media (max-width: 768px) {
            .hero-section {
                min-height: 60vh;
            }
            .hero-content {
                padding: 3rem 1rem;
            }
            .hero-tags span {
                font-size: 0.75rem;
                padding: 0.25rem 0.9rem;
            }
            .btn-primary, .btn-outline {
                padding: 0.7rem 1.6rem;
                font-size: 0.9rem;
            }
        }

        /* 通用板块 */
        .section-padding {
            padding: 5rem 0;
        }
        .section-title {
            text-align: center;
            margin-bottom: 3.5rem;
        }
        .section-title h2 {
            font-size: clamp(1.6rem, 3.5vw, 2.4rem);
            font-weight: 800;
            color: var(--dark);
            letter-spacing: -0.01em;
            margin-bottom: 0.75rem;
        }
        .section-title p {
            color: var(--muted);
            font-size: 1.05rem;
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.7;
        }
        .section-title .badge {
            display: inline-block;
            padding: 0.3rem 1.2rem;
            border-radius: 999px;
            background: rgba(30,64,175,0.08);
            color: var(--primary);
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 1rem;
        }
        @media (max-width: 768px) {
            .section-padding {
                padding: 3rem 0;
            }
            .section-title {
                margin-bottom: 2rem;
            }
        }

        /* 优势卡片 */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
        }
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 2rem;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }
        .advantage-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 2.5rem 2rem;
            text-align: center;
            border: 1px solid var(--border-color);
            transition: var(--transition);
            box-shadow: var(--card-shadow);
        }
        .advantage-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--card-shadow-hover);
            border-color: rgba(30,64,175,0.15);
        }
        .advantage-card .icon {
            width: 64px;
            height: 64px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1.5rem;
            font-size: 1.8rem;
            color: #fff;
            background: var(--primary);
        }
        .advantage-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
            color: var(--dark);
        }
        .advantage-card p {
            color: var(--muted);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        @media (max-width: 768px) {
            .grid-3 {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .grid-2 {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
                gap: 1rem;
            }
            .advantage-card {
                padding: 2rem 1.5rem;
            }
        }
        @media (max-width: 480px) {
            .grid-4 {
                grid-template-columns: 1fr;
            }
        }

        /* 分类入口卡片 */
        .cat-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: flex-end;
            background: var(--dark);
            transition: var(--transition);
            box-shadow: var(--card-shadow);
        }
        .cat-card img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .cat-card:hover img {
            transform: scale(1.05);
        }
        .cat-card .overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(0deg, rgba(15,23,42,0.85) 0%, rgba(15,23,42,0.15) 70%, transparent 100%);
            z-index: 1;
        }
        .cat-card .content {
            position: relative;
            z-index: 2;
            padding: 2rem 2rem 2.2rem;
            width: 100%;
        }
        .cat-card .content h3 {
            font-size: 1.5rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.4rem;
        }
        .cat-card .content p {
            color: rgba(255,255,255,0.75);
            font-size: 0.95rem;
            margin-bottom: 1rem;
        }
        .cat-card .content .tag {
            display: inline-block;
            padding: 0.25rem 1rem;
            border-radius: 999px;
            background: var(--accent);
            color: #fff;
            font-size: 0.8rem;
            font-weight: 600;
        }
        .cat-card .content .arrow {
            position: absolute;
            right: 2rem;
            bottom: 2.2rem;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255,255,255,0.20);
            backdrop-filter: blur(4px);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .cat-card:hover .content .arrow {
            background: var(--accent);
            transform: translateX(4px);
        }
        @media (max-width: 768px) {
            .cat-card {
                min-height: 240px;
            }
            .cat-card .content {
                padding: 1.5rem;
            }
            .cat-card .content h3 {
                font-size: 1.2rem;
            }
            .cat-card .content .arrow {
                right: 1.5rem;
                bottom: 1.5rem;
                width: 34px;
                height: 34px;
                font-size: 0.9rem;
            }
        }

        /* 热门推荐卡片 */
        .hot-card {
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: #fff;
            border: 1px solid var(--border-color);
            box-shadow: var(--card-shadow);
            transition: var(--transition);
        }
        .hot-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--card-shadow-hover);
        }
        .hot-card .img-wrap {
            height: 200px;
            overflow: hidden;
            background: var(--light-bg);
        }
        .hot-card .img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .hot-card:hover .img-wrap img {
            transform: scale(1.05);
        }
        .hot-card .info {
            padding: 1.5rem;
        }
        .hot-card .info .cat-tag {
            display: inline-block;
            padding: 0.2rem 0.8rem;
            border-radius: 999px;
            background: rgba(30,64,175,0.08);
            color: var(--primary);
            font-size: 0.75rem;
            font-weight: 600;
            margin-bottom: 0.6rem;
        }
        .hot-card .info h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 0.5rem;
            line-height: 1.4;
        }
        .hot-card .info p {
            color: var(--muted);
            font-size: 0.88rem;
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .hot-card .info .meta {
            display: flex;
            align-items: center;
            gap: 1rem;
            margin-top: 0.75rem;
            font-size: 0.8rem;
            color: var(--muted);
        }
        @media (max-width: 768px) {
            .hot-card .img-wrap {
                height: 160px;
            }
            .hot-card .info {
                padding: 1.2rem;
            }
        }

        /* 最新资讯列表 */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 1.25rem;
        }
        .news-item {
            display: flex;
            align-items: center;
            gap: 1.5rem;
            padding: 1.25rem 1.5rem;
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            box-shadow: var(--card-shadow);
        }
        .news-item:hover {
            border-color: rgba(30,64,175,0.20);
            box-shadow: var(--card-shadow-hover);
            transform: translateX(4px);
        }
        .news-item .num {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--light-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1rem;
            color: var(--primary);
            flex-shrink: 0;
        }
        .news-item .content {
            flex: 1;
            min-width: 0;
        }
        .news-item .content h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--dark);
            margin-bottom: 0.25rem;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .news-item .content h4 a:hover {
            color: var(--primary);
        }
        .news-item .content p {
            color: var(--muted);
            font-size: 0.88rem;
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-item .meta {
            display: flex;
            align-items: center;
            gap: 1rem;
            flex-shrink: 0;
        }
        .news-item .meta .cat-badge {
            padding: 0.2rem 0.8rem;
            border-radius: 999px;
            background: rgba(245,158,11,0.12);
            color: var(--accent-dark);
            font-size: 0.75rem;
            font-weight: 600;
        }
        .news-item .meta .date {
            font-size: 0.8rem;
            color: var(--muted);
            white-space: nowrap;
        }
        .news-empty {
            text-align: center;
            padding: 3rem 2rem;
            color: var(--muted);
            font-size: 1.05rem;
            background: var(--light-bg);
            border-radius: var(--radius-lg);
        }
        @media (max-width: 768px) {
            .news-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 0.75rem;
                padding: 1rem 1.2rem;
            }
            .news-item .num {
                width: 32px;
                height: 32px;
                font-size: 0.85rem;
            }
            .news-item .meta {
                width: 100%;
                justify-content: space-between;
            }
            .news-item .content h4 {
                font-size: 0.95rem;
            }
        }

        /* 数据板块 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
        }
        .stat-item {
            text-align: center;
            padding: 2rem 1rem;
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .stat-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--card-shadow-hover);
        }
        .stat-item .number {
            font-size: clamp(2rem, 4vw, 2.8rem);
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }
        .stat-item .label {
            color: var(--muted);
            font-size: 0.95rem;
            margin-top: 0.5rem;
        }
        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 1rem;
            }
            .stat-item {
                padding: 1.5rem 0.8rem;
            }
            .stat-item .number {
                font-size: 1.8rem;
            }
        }

        /* 流程 */
        .steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
            position: relative;
        }
        .step-card {
            text-align: center;
            padding: 2rem 1.2rem;
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            position: relative;
            transition: var(--transition);
        }
        .step-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--card-shadow-hover);
        }
        .step-card .step-num {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            font-weight: 800;
            margin: 0 auto 1.2rem;
        }
        .step-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 0.5rem;
        }
        .step-card p {
            color: var(--muted);
            font-size: 0.9rem;
            line-height: 1.6;
        }
        @media (max-width: 768px) {
            .steps {
                grid-template-columns: repeat(2, 1fr);
                gap: 1rem;
            }
            .step-card {
                padding: 1.5rem 1rem;
            }
            .step-card .step-num {
                width: 44px;
                height: 44px;
                font-size: 1.1rem;
            }
        }
        @media (max-width: 480px) {
            .steps {
                grid-template-columns: 1fr;
            }
        }

        /* FAQ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .faq-item {
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            overflow: hidden;
            background: #fff;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(30,64,175,0.15);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 1.25rem 1.5rem;
            font-size: 1rem;
            font-weight: 600;
            color: var(--dark);
            background: transparent;
            text-align: left;
            transition: var(--transition);
            gap: 1rem;
        }
        .faq-question:hover {
            background: var(--light-bg);
        }
        .faq-question .icon {
            font-size: 1.2rem;
            color: var(--primary);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question .icon {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 1.5rem;
            color: var(--muted);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 1.5rem 1.25rem;
        }
        @media (max-width: 768px) {
            .faq-question {
                padding: 1rem 1.2rem;
                font-size: 0.95rem;
            }
            .faq-answer {
                padding: 0 1.2rem;
                font-size: 0.9rem;
            }
            .faq-item.open .faq-answer {
                padding: 0 1.2rem 1rem;
            }
        }

        /* CTA */
        .cta-section {
            background: linear-gradient(135deg, var(--dark) 0%, #1a2744 100%);
            border-radius: var(--radius-xl);
            padding: 4rem 3rem;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08;
            z-index: 0;
        }
        .cta-section > * {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: clamp(1.5rem, 3vw, 2.2rem);
            font-weight: 800;
            color: #fff;
            margin-bottom: 1rem;
        }
        .cta-section p {
            color: rgba(255,255,255,0.75);
            font-size: 1.05rem;
            max-width: 560px;
            margin: 0 auto 2rem;
            line-height: 1.7;
        }
        .cta-section .btn-primary {
            font-size: 1.05rem;
            padding: 1rem 2.5rem;
        }
        @media (max-width: 768px) {
            .cta-section {
                padding: 2.5rem 1.5rem;
                border-radius: var(--radius-lg);
            }
            .cta-section p {
                font-size: 0.95rem;
            }
        }

        /* Footer */
        .footer {
            background: var(--dark);
            color: rgba(255,255,255,0.70);
            padding: 4rem 0 2rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 3rem;
            margin-bottom: 3rem;
        }
        .footer-brand .logo {
            color: #fff;
            font-size: 1.4rem;
            margin-bottom: 1rem;
            display: inline-block;
        }
        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: rgba(255,255,255,0.55);
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 1.2rem;
        }
        .footer-col a {
            display: block;
            padding: 0.35rem 0;
            font-size: 0.9rem;
            color: rgba(255,255,255,0.55);
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: 2rem;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.40);
        }
        .footer-bottom a {
            color: rgba(255,255,255,0.50);
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 2rem;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .footer {
                padding: 3rem 0 1.5rem;
            }
        }
        @media (max-width: 480px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* scroll to top */
        .scroll-top {
            position: fixed;
            bottom: 2rem;
            right: 2rem;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            box-shadow: 0 4px 16px rgba(30,64,175,0.30);
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
            z-index: 50;
        }
        .scroll-top.show {
            opacity: 1;
            visibility: visible;
        }
        .scroll-top:hover {
            background: var(--primary-dark);
            transform: translateY(-3px);
        }

/* roulang page: category1 */
:root {
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --accent: #d946ef;
            --bg-body: #f8fafc;
            --bg-card: #ffffff;
            --text-body: #1e293b;
            --text-muted: #64748b;
            --border-light: #e2e8f0;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-card: 0 4px 20px rgba(0,0,0,0.08);
            --shadow-hover: 0 12px 40px rgba(0,0,0,0.12);
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body { font-family: 'PingFang SC','Microsoft YaHei','Helvetica Neue',Arial,sans-serif; background: var(--bg-body); color: var(--text-body); line-height: 1.6; }
        a { text-decoration: none; color: inherit; transition: color 0.2s; }
        img { max-width: 100%; height: auto; display: block; }
        .container-custom { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
        .gradient-text { background: linear-gradient(135deg, var(--primary), var(--accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .btn-primary { display: inline-flex; align-items: center; gap: 8px; background: linear-gradient(135deg, #2563eb, #7c3aed); color: #fff; padding: 12px 28px; border-radius: 50px; font-weight: 600; font-size: 15px; border: none; cursor: pointer; transition: all 0.3s; box-shadow: 0 4px 15px rgba(37,99,235,0.3); }
        .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 25px rgba(37,99,235,0.4); }
        .btn-outline { display: inline-flex; align-items: center; gap: 8px; background: transparent; color: var(--primary); padding: 10px 24px; border-radius: 50px; font-weight: 600; font-size: 14px; border: 2px solid var(--primary); cursor: pointer; transition: all 0.3s; }
        .btn-outline:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
        .card { background: var(--bg-card); border-radius: var(--radius-md); box-shadow: var(--shadow-card); overflow: hidden; transition: all 0.3s; }
        .card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }
        .badge { display: inline-block; padding: 4px 14px; border-radius: 50px; font-size: 12px; font-weight: 600; background: #dbeafe; color: #1d4ed8; }
        .badge-accent { background: #fae8ff; color: #a21caf; }
        .badge-success { background: #d1fae5; color: #065f46; }
        .section-title { font-size: 32px; font-weight: 800; margin-bottom: 12px; letter-spacing: -0.5px; }
        .section-subtitle { font-size: 16px; color: var(--text-muted); max-width: 640px; margin-bottom: 40px; }
        .star-rating { color: #f59e0b; letter-spacing: 2px; }
        .nav-link { position: relative; font-weight: 500; padding: 6px 0; transition: color 0.2s; }
        .nav-link::after { content: ''; position: absolute; left: 0; bottom: -2px; width: 0; height: 2px; background: linear-gradient(90deg, #2563eb, #7c3aed); transition: width 0.3s; border-radius: 2px; }
        .nav-link:hover::after, .nav-link.active::after { width: 100%; }
        .nav-link.active { color: #2563eb; }
        .mobile-menu { transition: all 0.3s; }
        .hero-overlay { background: linear-gradient(135deg, rgba(15,23,42,0.85) 0%, rgba(30,27,75,0.75) 100%); }
        .glass-card { background: rgba(255,255,255,0.08); backdrop-filter: blur(12px); border: 1px solid rgba(255,255,255,0.12); border-radius: var(--radius-md); }
        .review-score { width: 72px; height: 72px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 28px; font-weight: 800; color: #fff; background: linear-gradient(135deg, #2563eb, #7c3aed); flex-shrink: 0; }
        .faq-item { border-bottom: 1px solid var(--border-light); padding: 18px 0; cursor: pointer; }
        .faq-question { display: flex; justify-content: space-between; align-items: center; font-weight: 600; font-size: 16px; }
        .faq-question i { transition: transform 0.3s; color: var(--text-muted); }
        .faq-item.open .faq-question i { transform: rotate(180deg); }
        .faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.4s ease, padding 0.3s; color: var(--text-muted); font-size: 15px; }
        .faq-item.open .faq-answer { max-height: 300px; padding-top: 12px; }
        @media (max-width: 1024px) { .section-title { font-size: 28px; } }
        @media (max-width: 768px) { .section-title { font-size: 24px; } .container-custom { padding: 0 16px; } .review-score { width: 56px; height: 56px; font-size: 22px; } }
        @media (max-width: 520px) { .section-title { font-size: 20px; } .btn-primary { padding: 10px 20px; font-size: 14px; } }
        .filter-btn { padding: 8px 20px; border-radius: 50px; font-size: 14px; font-weight: 500; border: 1px solid var(--border-light); background: #fff; cursor: pointer; transition: all 0.3s; }
        .filter-btn.active, .filter-btn:hover { background: #2563eb; color: #fff; border-color: #2563eb; }
        .pagination a { display: inline-flex; align-items: center; justify-content: center; width: 40px; height: 40px; border-radius: 10px; font-weight: 500; transition: all 0.2s; border: 1px solid var(--border-light); background: #fff; }
        .pagination a.active, .pagination a:hover { background: #2563eb; color: #fff; border-color: #2563eb; }
        .footer a { transition: opacity 0.2s; }
        .footer a:hover { opacity: 0.8; }

/* roulang page: article */
:root {
            --primary: #1a56db;
            --primary-dark: #1340a0;
            --primary-light: #e8f0fe;
            --accent: #f59e0b;
            --accent-dark: #d97706;
            --bg-body: #f8fafc;
            --bg-card: #ffffff;
            --bg-dark: #0f172a;
            --text-primary: #1e293b;
            --text-secondary: #64748b;
            --text-light: #94a3b8;
            --border: #e2e8f0;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 4px 24px rgba(0,0,0,0.06);
            --shadow-hover: 0 12px 40px rgba(0,0,0,0.12);
            --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
            --max-width: 1280px;
            --header-h: 72px;
        }
        html{scroll-behavior:smooth}
        body{font-family:'Inter','Segoe UI','PingFang SC','Microsoft YaHei',sans-serif;background:var(--bg-body);color:var(--text-primary);line-height:1.7;margin:0;padding:0}
        *,*::before,*::after{box-sizing:border-box}
        a{color:inherit;text-decoration:none;transition:var(--transition)}
        img{max-width:100%;height:auto;display:block}
        button,input,textarea{font-family:inherit}
        .container{max-width:var(--max-width);margin:0 auto;padding:0 24px}
        @media(max-width:768px){.container{padding:0 16px}}

        /* header / nav */
        .header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,0.92);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid var(--border);height:var(--header-h)}
        .header .container{display:flex;align-items:center;justify-content:space-between;height:100%}
        .logo{font-size:1.45rem;font-weight:800;letter-spacing:-0.3px;color:var(--text-primary);display:flex;align-items:center;gap:4px}
        .logo span{color:var(--primary)}
        .nav-links{display:flex;align-items:center;gap:6px}
        .nav-links a{padding:8px 18px;border-radius:40px;font-size:0.9rem;font-weight:500;color:var(--text-secondary);transition:var(--transition);position:relative}
        .nav-links a:hover{color:var(--primary);background:var(--primary-light)}
        .nav-links a.active{color:#fff;background:var(--primary);font-weight:600;box-shadow:0 4px 12px rgba(26,86,219,0.3)}
        .nav-search{display:flex;align-items:center;background:var(--bg-body);border:1.5px solid var(--border);border-radius:40px;padding:0 16px;transition:var(--transition);max-width:280px;width:100%}
        .nav-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 4px rgba(26,86,219,0.1)}
        .nav-search input{border:none;background:transparent;padding:8px 10px;font-size:0.85rem;outline:none;width:100%;color:var(--text-primary)}
        .nav-search input::placeholder{color:var(--text-light)}
        .nav-search i{color:var(--text-light);font-size:0.9rem}
        .nav-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:6px;background:none;border:none}
        .nav-toggle span{width:24px;height:2.5px;background:var(--text-primary);border-radius:4px;transition:var(--transition)}
        @media(max-width:768px){
            .nav-links{position:fixed;top:var(--header-h);left:0;right:0;background:rgba(255,255,255,0.98);backdrop-filter:blur(20px);flex-direction:column;padding:16px 20px 24px;gap:8px;border-bottom:1px solid var(--border);transform:translateY(-120%);opacity:0;pointer-events:none;transition:var(--transition);box-shadow:0 20px 40px rgba(0,0,0,0.08)}
            .nav-links.open{transform:translateY(0);opacity:1;pointer-events:auto}
            .nav-links a{width:100%;text-align:center;padding:10px 16px}
            .nav-search{max-width:100%}
            .nav-toggle{display:flex}
        }

        /* breadcrumb */
        .breadcrumb{display:flex;align-items:center;gap:8px;padding:16px 0 0;font-size:0.85rem;color:var(--text-light);flex-wrap:wrap}
        .breadcrumb a{color:var(--text-secondary);transition:var(--transition)}
        .breadcrumb a:hover{color:var(--primary)}
        .breadcrumb i{font-size:0.7rem;color:var(--text-light)}

        /* article hero */
        .article-hero{position:relative;padding:80px 0 60px;background:var(--bg-dark);color:#fff;overflow:hidden}
        .article-hero::before{content:'';position:absolute;inset:0;background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;opacity:0.25;transform:scale(1.02)}
        .article-hero::after{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(15,23,42,0.92) 40%,rgba(15,23,42,0.6) 100%)}
        .article-hero .container{position:relative;z-index:2}
        .article-hero .category-badge{display:inline-block;padding:4px 16px;border-radius:40px;background:rgba(245,158,11,0.2);color:var(--accent);font-size:0.8rem;font-weight:600;letter-spacing:0.3px;margin-bottom:16px;backdrop-filter:blur(4px);border:1px solid rgba(245,158,11,0.2)}
        .article-hero h1{font-size:2.6rem;font-weight:800;line-height:1.25;margin:0 0 20px;letter-spacing:-0.5px;max-width:840px}
        .article-hero .meta{display:flex;align-items:center;gap:24px;font-size:0.9rem;color:rgba(255,255,255,0.7);flex-wrap:wrap}
        .article-hero .meta i{margin-right:6px}
        .article-hero .meta span{display:flex;align-items:center}
        @media(max-width:768px){
            .article-hero{padding:48px 0 40px}
            .article-hero h1{font-size:1.8rem}
            .article-hero .meta{gap:12px;font-size:0.8rem}
        }
        @media(max-width:520px){
            .article-hero h1{font-size:1.5rem}
        }

        /* article body */
        .article-body{padding:48px 0 64px}
        .article-layout{display:grid;grid-template-columns:1fr 320px;gap:48px}
        .article-content{background:var(--bg-card);border-radius:var(--radius);padding:40px;box-shadow:var(--shadow);border:1px solid var(--border)}
        .article-content .content-body{font-size:1.05rem;line-height:1.85;color:var(--text-primary)}
        .article-content .content-body p{margin:0 0 1.6em}
        .article-content .content-body h2{font-size:1.6rem;font-weight:700;margin:2em 0 0.8em;color:var(--text-primary);letter-spacing:-0.3px}
        .article-content .content-body h3{font-size:1.25rem;font-weight:700;margin:1.8em 0 0.6em;color:var(--text-primary)}
        .article-content .content-body ul,.article-content .content-body ol{padding-left:1.5em;margin:0 0 1.6em}
        .article-content .content-body li{margin-bottom:0.4em}
        .article-content .content-body blockquote{border-left:4px solid var(--primary);padding:12px 20px;margin:1.6em 0;background:var(--primary-light);border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:var(--text-secondary)}
        .article-content .content-body a{color:var(--primary);text-decoration:underline;text-underline-offset:3px}
        .article-content .content-body a:hover{color:var(--primary-dark)}
        .article-content .content-body img{border-radius:var(--radius-sm);margin:1.6em 0;box-shadow:var(--shadow)}
        .article-content .content-body figure{margin:1.6em 0;text-align:center}
        .article-content .content-body figcaption{font-size:0.85rem;color:var(--text-light);margin-top:8px}
        .article-content .content-body table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:0.95rem}
        .article-content .content-body th,.article-content .content-body td{padding:10px 14px;border:1px solid var(--border);text-align:left}
        .article-content .content-body th{background:var(--primary-light);font-weight:600}
        .article-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:32px;padding-top:24px;border-top:1px solid var(--border)}
        .article-tags .tag{padding:4px 14px;border-radius:40px;background:var(--bg-body);border:1px solid var(--border);font-size:0.8rem;color:var(--text-secondary);transition:var(--transition)}
        .article-tags .tag:hover{background:var(--primary-light);border-color:var(--primary);color:var(--primary)}
        .article-share{display:flex;align-items:center;gap:12px;margin-top:24px;padding-top:20px;border-top:1px solid var(--border)}
        .article-share span{font-size:0.85rem;color:var(--text-secondary);font-weight:600}
        .article-share a{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:50%;background:var(--bg-body);border:1px solid var(--border);color:var(--text-secondary);transition:var(--transition)}
        .article-share a:hover{background:var(--primary);color:#fff;border-color:var(--primary)}
        @media(max-width:1024px){
            .article-layout{grid-template-columns:1fr;gap:32px}
            .article-content{padding:28px}
        }
        @media(max-width:520px){
            .article-content{padding:20px}
            .article-content .content-body{font-size:0.98rem}
        }

        /* sidebar */
        .sidebar{display:flex;flex-direction:column;gap:28px}
        .sidebar-card{background:var(--bg-card);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);border:1px solid var(--border)}
        .sidebar-card h3{font-size:1.1rem;font-weight:700;margin:0 0 16px;padding-bottom:12px;border-bottom:2px solid var(--primary);color:var(--text-primary);display:flex;align-items:center;gap:8px}
        .sidebar-card h3 i{color:var(--primary)}
        .sidebar-links{display:flex;flex-direction:column;gap:6px}
        .sidebar-links a{padding:8px 12px;border-radius:var(--radius-sm);font-size:0.9rem;color:var(--text-secondary);transition:var(--transition);display:flex;align-items:center;gap:10px}
        .sidebar-links a::before{content:'▸';color:var(--primary);font-size:0.8rem}
        .sidebar-links a:hover{background:var(--primary-light);color:var(--primary)}
        .sidebar-post{display:flex;gap:14px;padding:10px 0;border-bottom:1px solid var(--border);align-items:flex-start}
        .sidebar-post:last-child{border-bottom:none;padding-bottom:0}
        .sidebar-post img{width:64px;height:64px;border-radius:var(--radius-sm);object-fit:cover;flex-shrink:0;background:var(--bg-body)}
        .sidebar-post .info{flex:1;min-width:0}
        .sidebar-post .info a{font-size:0.9rem;font-weight:600;color:var(--text-primary);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:var(--transition)}
        .sidebar-post .info a:hover{color:var(--primary)}
        .sidebar-post .info .date{font-size:0.75rem;color:var(--text-light);margin-top:4px}
        @media(max-width:1024px){
            .sidebar{display:grid;grid-template-columns:1fr 1fr;gap:24px}
        }
        @media(max-width:640px){
            .sidebar{grid-template-columns:1fr}
        }

        /* related section */
        .related-section{padding:48px 0;background:var(--bg-body)}
        .related-section .section-title{font-size:1.6rem;font-weight:800;margin:0 0 8px;letter-spacing:-0.3px}
        .related-section .section-sub{color:var(--text-secondary);margin:0 0 32px;font-size:0.95rem}
        .related-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
        .related-card{background:var(--bg-card);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--border);transition:var(--transition);display:flex;flex-direction:column}
        .related-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover)}
        .related-card .thumb{height:180px;background:var(--bg-body);overflow:hidden;position:relative}
        .related-card .thumb img{width:100%;height:100%;object-fit:cover;transition:var(--transition)}
        .related-card:hover .thumb img{transform:scale(1.06)}
        .related-card .card-body{padding:18px 20px 20px;flex:1;display:flex;flex-direction:column}
        .related-card .card-body .cat{font-size:0.75rem;color:var(--primary);font-weight:600;text-transform:uppercase;letter-spacing:0.4px;margin-bottom:6px}
        .related-card .card-body h4{font-size:1rem;font-weight:700;margin:0 0 8px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
        .related-card .card-body h4 a{transition:var(--transition)}
        .related-card .card-body h4 a:hover{color:var(--primary)}
        .related-card .card-body p{font-size:0.85rem;color:var(--text-secondary);margin:0 0 12px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;flex:1}
        .related-card .card-body .meta{font-size:0.78rem;color:var(--text-light);display:flex;align-items:center;gap:12px}
        @media(max-width:1024px){
            .related-grid{grid-template-columns:repeat(2,1fr)}
        }
        @media(max-width:640px){
            .related-grid{grid-template-columns:1fr}
            .related-card .thumb{height:200px}
        }

        /* CTA */
        .cta-section{padding:64px 0;background:var(--bg-dark);color:#fff;position:relative;overflow:hidden}
        .cta-section::before{content:'';position:absolute;inset:0;background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;opacity:0.12}
        .cta-section .container{position:relative;z-index:2;text-align:center}
        .cta-section h2{font-size:2rem;font-weight:800;margin:0 0 12px;letter-spacing:-0.3px}
        .cta-section p{font-size:1.05rem;color:rgba(255,255,255,0.7);max-width:600px;margin:0 auto 28px}
        .cta-section .cta-btn{display:inline-flex;align-items:center;gap:10px;padding:14px 40px;border-radius:40px;background:var(--accent);color:#fff;font-weight:700;font-size:1rem;transition:var(--transition);border:none;cursor:pointer}
        .cta-section .cta-btn:hover{background:var(--accent-dark);transform:translateY(-2px);box-shadow:0 12px 32px rgba(245,158,11,0.35)}
        .cta-section .cta-btn i{font-size:0.9rem}
        @media(max-width:768px){
            .cta-section{padding:48px 0}
            .cta-section h2{font-size:1.5rem}
        }

        /* not found */
        .not-found{text-align:center;padding:60px 20px}
        .not-found i{font-size:3rem;color:var(--text-light);margin-bottom:16px}
        .not-found h2{font-size:1.5rem;font-weight:700;margin:0 0 8px}
        .not-found p{color:var(--text-secondary);margin:0 0 24px}
        .not-found a{display:inline-flex;align-items:center;gap:8px;padding:10px 28px;border-radius:40px;background:var(--primary);color:#fff;font-weight:600;transition:var(--transition)}
        .not-found a:hover{background:var(--primary-dark);transform:translateY(-2px)}

        /* footer */
        .footer{background:var(--bg-dark);color:rgba(255,255,255,0.7);padding:56px 0 0;font-size:0.9rem}
        .footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,0.08)}
        .footer-brand .logo{color:#fff;font-size:1.3rem;margin-bottom:12px;display:inline-block}
        .footer-brand p{line-height:1.7;margin:12px 0 0;max-width:360px;color:rgba(255,255,255,0.55)}
        .footer-col h4{color:#fff;font-size:0.95rem;font-weight:700;margin:0 0 16px;letter-spacing:0.3px}
        .footer-col a{display:block;padding:5px 0;color:rgba(255,255,255,0.55);transition:var(--transition);font-size:0.88rem}
        .footer-col a:hover{color:var(--accent);padding-left:4px}
        .footer-col a i{width:20px;margin-right:6px}
        .footer-bottom{display:flex;justify-content:space-between;align-items:center;padding:20px 0;font-size:0.82rem;color:rgba(255,255,255,0.4);flex-wrap:wrap;gap:8px}
        .footer-bottom a{color:rgba(255,255,255,0.5);transition:var(--transition)}
        .footer-bottom a:hover{color:var(--accent)}
        @media(max-width:1024px){
            .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
        }
        @media(max-width:640px){
            .footer-grid{grid-template-columns:1fr;gap:24px}
            .footer-bottom{flex-direction:column;text-align:center}
        }

        /* utility */
        .text-accent{color:var(--accent)}
        .bg-accent-light{background:rgba(245,158,11,0.1)}
        .gap-2{gap:8px}
        @media(max-width:520px){
            .container{padding:0 12px}
            .article-hero .meta .meta-item{font-size:0.78rem}
        }

/* roulang page: category2 */
:root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b6b;
            --secondary: #1d3557;
            --secondary-light: #2a4a7f;
            --accent: #f4a261;
            --bg-dark: #0d1b2a;
            --bg-mid: #1b2838;
            --bg-card: #1e2d3d;
            --bg-light: #f8f9fa;
            --text-light: #f1faee;
            --text-muted: #a8b2c1;
            --text-dark: #1a1a2e;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --radius: 16px;
            --radius-sm: 10px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.3);
            --shadow-hover: 0 16px 48px rgba(0, 0, 0, 0.5);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background: var(--bg-dark);
            color: var(--text-light);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-light);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }
        button {
            cursor: pointer;
        }
        ul,
        ol {
            list-style: none;
        }

        .container {
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header / Navigation ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(13, 27, 42, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-subtle);
            transition: var(--transition);
        }
        .header.scrolled {
            background: rgba(13, 27, 42, 0.98);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
        }
        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 16px;
        }
        .logo {
            font-size: 1.5rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 6px;
            white-space: nowrap;
        }
        .logo span {
            color: var(--primary);
        }
        .logo .suffix {
            font-weight: 400;
            opacity: 0.7;
            font-size: 0.85rem;
            letter-spacing: 1px;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-links a {
            padding: 8px 18px;
            border-radius: 40px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-muted);
            transition: var(--transition);
            white-space: nowrap;
            position: relative;
        }
        .nav-links a:hover {
            color: var(--text-light);
            background: rgba(255, 255, 255, 0.06);
        }
        .nav-links a.active {
            color: #fff;
            background: var(--primary);
            box-shadow: 0 4px 16px rgba(230, 57, 70, 0.35);
        }
        .nav-links a.active:hover {
            background: var(--primary-dark);
            color: #fff;
        }

        .search-box {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-subtle);
            border-radius: 40px;
            padding: 0 16px;
            transition: var(--transition);
            flex: 1;
            max-width: 320px;
        }
        .search-box:focus-within {
            border-color: var(--primary);
            background: rgba(255, 255, 255, 0.08);
            box-shadow: 0 0 0 4px rgba(230, 57, 70, 0.15);
        }
        .search-box i {
            color: var(--text-muted);
            font-size: 0.9rem;
        }
        .search-box input {
            background: transparent;
            border: none;
            padding: 10px 12px;
            color: var(--text-light);
            font-size: 0.9rem;
            width: 100%;
            min-width: 120px;
        }
        .search-box input::placeholder {
            color: var(--text-muted);
        }

        .menu-toggle {
            display: none;
            background: none;
            font-size: 1.6rem;
            color: var(--text-light);
            padding: 4px 8px;
            border-radius: 8px;
            transition: var(--transition);
        }
        .menu-toggle:hover {
            background: rgba(255, 255, 255, 0.06);
        }

        /* ===== Hero / Banner ===== */
        .category-hero {
            position: relative;
            min-height: 480px;
            display: flex;
            align-items: center;
            margin-top: 72px;
            overflow: hidden;
            background: var(--bg-dark);
        }
        .category-hero .bg-img {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.3;
            transform: scale(1.05);
            transition: transform 8s ease;
        }
        .category-hero:hover .bg-img {
            transform: scale(1.0);
        }
        .category-hero .overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13, 27, 42, 0.92) 0%, rgba(13, 27, 42, 0.7) 50%, rgba(230, 57, 70, 0.15) 100%);
            z-index: 1;
        }
        .category-hero .container {
            position: relative;
            z-index: 2;
            padding-top: 40px;
            padding-bottom: 40px;
        }
        .category-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(230, 57, 70, 0.2);
            border: 1px solid rgba(230, 57, 70, 0.3);
            padding: 6px 18px;
            border-radius: 40px;
            font-size: 0.85rem;
            color: var(--primary-light);
            margin-bottom: 20px;
            backdrop-filter: blur(4px);
        }
        .category-hero .hero-badge i {
            font-size: 0.75rem;
        }
        .category-hero h1 {
            font-size: 3.2rem;
            font-weight: 800;
            line-height: 1.15;
            letter-spacing: -1px;
            max-width: 720px;
            margin-bottom: 20px;
        }
        .category-hero h1 .highlight {
            color: var(--primary);
        }
        .category-hero p {
            font-size: 1.15rem;
            color: var(--text-muted);
            max-width: 600px;
            margin-bottom: 32px;
            line-height: 1.8;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--transition);
            border: none;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 20px rgba(230, 57, 70, 0.35);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(230, 57, 70, 0.45);
        }
        .btn-outline {
            background: transparent;
            border: 1.5px solid rgba(255, 255, 255, 0.2);
            color: var(--text-light);
        }
        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary-light);
            background: rgba(230, 57, 70, 0.08);
            transform: translateY(-2px);
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb {
            padding: 20px 0 0;
            font-size: 0.85rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--text-muted);
            transition: var(--transition);
        }
        .breadcrumb a:hover {
            color: var(--primary-light);
        }
        .breadcrumb .sep {
            opacity: 0.4;
        }
        .breadcrumb .current {
            color: var(--text-light);
        }

        /* ===== Section ===== */
        .section {
            padding: 80px 0;
        }
        .section-header {
            text-align: center;
            margin-bottom: 56px;
        }
        .section-header h2 {
            font-size: 2.4rem;
            font-weight: 700;
            letter-spacing: -0.5px;
            margin-bottom: 12px;
        }
        .section-header h2 .hl {
            color: var(--primary);
        }
        .section-header p {
            color: var(--text-muted);
            font-size: 1.05rem;
            max-width: 560px;
            margin: 0 auto;
        }
        .section-header .line {
            width: 60px;
            height: 4px;
            background: var(--primary);
            border-radius: 4px;
            margin: 16px auto 0;
        }

        /* ===== Category Cards ===== */
        .cat-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            gap: 24px;
        }
        .cat-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 32px 28px;
            border: 1px solid var(--border-subtle);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .cat-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--primary);
            opacity: 0;
            transition: var(--transition);
        }
        .cat-card:hover {
            transform: translateY(-6px);
            border-color: rgba(230, 57, 70, 0.25);
            box-shadow: var(--shadow-hover);
        }
        .cat-card:hover::before {
            opacity: 1;
        }
        .cat-card .icon {
            font-size: 2.2rem;
            color: var(--primary);
            margin-bottom: 16px;
        }
        .cat-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .cat-card p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.6;
            margin-bottom: 16px;
        }
        .cat-card .tag {
            display: inline-block;
            background: rgba(230, 57, 70, 0.12);
            color: var(--primary-light);
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 500;
        }

        /* ===== Guide Cards ===== */
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
            gap: 28px;
        }
        .guide-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border-subtle);
            transition: var(--transition);
        }
        .guide-card:hover {
            transform: translateY(-6px);
            border-color: rgba(230, 57, 70, 0.2);
            box-shadow: var(--shadow-hover);
        }
        .guide-card .card-img {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        .guide-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }
        .guide-card:hover .card-img img {
            transform: scale(1.06);
        }
        .guide-card .card-img .badge {
            position: absolute;
            top: 14px;
            left: 14px;
            background: var(--primary);
            color: #fff;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.7rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            backdrop-filter: blur(4px);
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
        }
        .guide-card .card-body {
            padding: 24px;
        }
        .guide-card .card-body .meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 10px;
        }
        .guide-card .card-body .meta i {
            margin-right: 4px;
        }
        .guide-card .card-body h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .guide-card .card-body p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .guide-card .card-body .card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 12px;
            border-top: 1px solid var(--border-subtle);
        }
        .guide-card .card-body .card-footer .author {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .guide-card .card-body .card-footer .author i {
            font-size: 1.2rem;
            color: var(--primary);
        }
        .guide-card .card-body .card-footer .read-more {
            color: var(--primary-light);
            font-weight: 600;
            font-size: 0.85rem;
            transition: var(--transition);
        }
        .guide-card .card-body .card-footer .read-more:hover {
            gap: 6px;
            color: #fff;
        }

        /* ===== Stats / Data ===== */
        .stats-section {
            background: var(--bg-mid);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 32px;
            text-align: center;
            padding: 60px 0;
        }
        .stat-item .num {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.1;
            letter-spacing: -1px;
        }
        .stat-item .num span {
            font-size: 1.8rem;
            color: var(--text-muted);
        }
        .stat-item .label {
            color: var(--text-muted);
            font-size: 0.95rem;
            margin-top: 6px;
        }

        /* ===== Tools / resources ===== */
        .tools-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 20px;
        }
        .tool-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            padding: 24px 20px;
            text-align: center;
            border: 1px solid var(--border-subtle);
            transition: var(--transition);
        }
        .tool-item:hover {
            transform: translateY(-4px);
            border-color: rgba(230, 57, 70, 0.25);
            box-shadow: var(--shadow-card);
        }
        .tool-item .icon {
            font-size: 2rem;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .tool-item h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 6px;
        }
        .tool-item p {
            color: var(--text-muted);
            font-size: 0.8rem;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-subtle);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(230, 57, 70, 0.2);
        }
        .faq-item .faq-q {
            padding: 20px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            user-select: none;
            transition: var(--transition);
        }
        .faq-item .faq-q:hover {
            color: var(--primary-light);
        }
        .faq-item .faq-q i {
            transition: transform 0.3s ease;
            color: var(--text-muted);
        }
        .faq-item.open .faq-q i {
            transform: rotate(180deg);
        }
        .faq-item .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.8;
        }
        .faq-item.open .faq-a {
            max-height: 400px;
            padding: 0 24px 20px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--bg-mid) 0%, rgba(230, 57, 70, 0.08) 100%);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
            padding: 80px 0;
            text-align: center;
        }
        .cta-section h2 {
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .cta-section p {
            color: var(--text-muted);
            max-width: 520px;
            margin: 0 auto 32px;
            font-size: 1.05rem;
        }
        .cta-section .btn-group {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 14px;
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-dark);
            border-top: 1px solid var(--border-subtle);
            padding: 64px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo {
            font-size: 1.3rem;
            margin-bottom: 12px;
        }
        .footer-brand p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-light);
        }
        .footer-col a {
            display: block;
            color: var(--text-muted);
            font-size: 0.88rem;
            padding: 4px 0;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }
        .footer-col a i {
            width: 20px;
            margin-right: 4px;
        }
        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.82rem;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-muted);
        }
        .footer-bottom a:hover {
            color: var(--primary-light);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .category-hero h1 {
                font-size: 2.6rem;
            }
        }

        @media (max-width: 768px) {
            .header .container {
                height: 64px;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                background: rgba(13, 27, 42, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 16px 24px 24px;
                border-bottom: 1px solid var(--border-subtle);
                gap: 6px;
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                padding: 12px 18px;
                font-size: 1rem;
                width: 100%;
                border-radius: 10px;
            }
            .nav-links a.active {
                background: var(--primary);
            }
            .menu-toggle {
                display: block;
            }
            .search-box {
                max-width: 180px;
            }
            .search-box input {
                min-width: 80px;
                font-size: 0.8rem;
            }
            .category-hero {
                min-height: 360px;
            }
            .category-hero h1 {
                font-size: 2rem;
            }
            .category-hero p {
                font-size: 1rem;
            }
            .section {
                padding: 48px 0;
            }
            .section-header h2 {
                font-size: 1.8rem;
            }
            .cat-grid {
                grid-template-columns: 1fr 1fr;
            }
            .guide-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
                padding: 40px 0;
            }
            .stat-item .num {
                font-size: 2.2rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .cta-section h2 {
                font-size: 1.6rem;
            }
        }

        @media (max-width: 520px) {
            .cat-grid {
                grid-template-columns: 1fr;
            }
            .category-hero h1 {
                font-size: 1.7rem;
            }
            .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }
            .search-box {
                max-width: 130px;
            }
            .search-box input {
                min-width: 60px;
                font-size: 0.75rem;
                padding: 6px 8px;
            }
            .tools-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (min-width: 769px) {
            .nav-links {
                display: flex !important;
            }
        }