/* roulang page: index */
:root {
            --primary: #2563eb;
            --primary-dark: #1e40af;
            --accent: #e67e00;
            --accent-light: #f9ab50;
            --bg-white: #ffffff;
            --bg-light: #f8fafc;
            --bg-dark: #0f172a;
            --text-dark: #0f172a;
            --text-body: #334155;
            --text-muted: #64748b;
            --border-light: #e2e8f0;
            --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
            --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --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', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            color: var(--text-body);
            background: var(--bg-white);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }
        /* Header / Nav */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(226, 232, 240, 0.6);
            transition: var(--transition);
        }
        .site-header.scrolled {
            background: rgba(255, 255, 255, 0.98);
            box-shadow: var(--shadow-sm);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--primary-dark);
            letter-spacing: -0.02em;
        }
        .logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
        }
        .nav-links a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-body);
            transition: var(--transition);
            position: relative;
        }
        .nav-links a:hover {
            color: var(--primary);
            background: rgba(37, 99, 235, 0.06);
        }
        .nav-links a.active {
            color: var(--primary);
            background: rgba(37, 99, 235, 0.10);
            font-weight: 600;
        }
        .nav-right {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .search-box {
            display: flex;
            align-items: center;
            background: var(--bg-light);
            border: 1px solid var(--border-light);
            border-radius: 100px;
            padding: 6px 6px 6px 18px;
            transition: var(--transition);
            min-width: 200px;
        }
        .search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
        }
        .search-box input {
            border: none;
            background: transparent;
            outline: none;
            padding: 4px 0;
            font-size: 0.9rem;
            color: var(--text-dark);
            width: 100%;
        }
        .search-box input::placeholder {
            color: var(--text-muted);
        }
        .search-box button {
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 100px;
            padding: 6px 14px;
            font-size: 0.85rem;
            font-weight: 500;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
        }
        .search-box button:hover {
            background: var(--primary-dark);
        }
        .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--accent), #d97706);
            color: #fff;
            border: none;
            border-radius: 100px;
            padding: 10px 24px;
            font-size: 0.95rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 4px 14px rgba(230, 126, 0, 0.35);
            white-space: nowrap;
        }
        .btn-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(230, 126, 0, 0.45);
        }
        .btn-cta i {
            font-size: 0.85rem;
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--text-dark);
            cursor: pointer;
            padding: 4px;
        }
        @media (max-width: 1024px) {
            .search-box {
                min-width: 140px;
            }
            .search-box input {
                width: 80px;
            }
        }
        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 16px 24px 24px;
                border-bottom: 1px solid var(--border-light);
                box-shadow: var(--shadow-md);
                gap: 4px;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                padding: 12px 16px;
                width: 100%;
                border-radius: var(--radius-sm);
            }
            .nav-right .search-box {
                display: none;
            }
            .mobile-toggle {
                display: block;
            }
            .btn-cta {
                padding: 8px 18px;
                font-size: 0.85rem;
            }
            .header-inner {
                height: 64px;
            }
            .logo {
                font-size: 1.2rem;
            }
        }
        @media (max-width: 480px) {
            .header-inner {
                gap: 12px;
            }
            .btn-cta span {
                display: none;
            }
            .btn-cta i {
                margin: 0;
            }
        }
        /* Hero */
        .hero {
            padding: 140px 0 80px;
            background: linear-gradient(160deg, #f0f4ff 0%, #e8edf8 50%, #dce3f0 100%);
            position: relative;
            overflow: hidden;
            min-height: 600px;
            display: flex;
            align-items: center;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: 0.15;
            z-index: 0;
        }
        .hero .container {
            position: relative;
            z-index: 1;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .hero-content h1 {
            font-size: 3.2rem;
            font-weight: 800;
            line-height: 1.2;
            color: var(--text-dark);
            letter-spacing: -0.03em;
            margin-bottom: 20px;
        }
        .hero-content h1 span {
            color: var(--primary);
            background: linear-gradient(135deg, var(--primary), #7c3aed);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-content p {
            font-size: 1.15rem;
            color: var(--text-muted);
            max-width: 520px;
            margin-bottom: 32px;
            line-height: 1.7;
        }
        .hero-buttons {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .hero-buttons .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 100px;
            padding: 14px 32px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 4px 16px rgba(37, 99, 235, 0.3);
        }
        .hero-buttons .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(37, 99, 235, 0.4);
        }
        .hero-buttons .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: var(--text-dark);
            border: 2px solid var(--border-light);
            border-radius: 100px;
            padding: 14px 32px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }
        .hero-buttons .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-2px);
        }
        .hero-image {
            display: flex;
            justify-content: center;
            align-items: center;
            position: relative;
        }
        .hero-image img {
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            width: 100%;
            max-width: 540px;
            object-fit: cover;
            aspect-ratio: 4/3;
        }
        .hero-stats {
            display: flex;
            gap: 32px;
            margin-top: 40px;
            padding-top: 28px;
            border-top: 1px solid rgba(226, 232, 240, 0.6);
        }
        .hero-stats .stat-item {
            text-align: center;
        }
        .hero-stats .stat-number {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--text-dark);
            letter-spacing: -0.02em;
        }
        .hero-stats .stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 2px;
        }
        @media (max-width: 1024px) {
            .hero-grid {
                gap: 32px;
            }
            .hero-content h1 {
                font-size: 2.6rem;
            }
        }
        @media (max-width: 768px) {
            .hero {
                padding: 110px 0 60px;
                min-height: auto;
            }
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .hero-content h1 {
                font-size: 2.2rem;
            }
            .hero-content p {
                font-size: 1rem;
            }
            .hero-image {
                order: -1;
            }
            .hero-image img {
                max-width: 100%;
                aspect-ratio: 16/9;
            }
            .hero-stats {
                gap: 20px;
                flex-wrap: wrap;
                justify-content: center;
            }
            .hero-stats .stat-number {
                font-size: 1.5rem;
            }
        }
        @media (max-width: 480px) {
            .hero-content h1 {
                font-size: 1.8rem;
            }
            .hero-buttons .btn-primary,
            .hero-buttons .btn-outline {
                padding: 12px 24px;
                font-size: 0.9rem;
                width: 100%;
                justify-content: center;
            }
        }
        /* Sections general */
        section {
            padding: 80px 0;
        }
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-dark);
            letter-spacing: -0.02em;
            margin-bottom: 12px;
        }
        .section-title p {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto;
        }
        .section-title .tag {
            display: inline-block;
            background: rgba(37, 99, 235, 0.10);
            color: var(--primary);
            padding: 4px 16px;
            border-radius: 100px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 12px;
        }
        @media (max-width: 768px) {
            section {
                padding: 56px 0;
            }
            .section-title h2 {
                font-size: 1.7rem;
            }
            .section-title p {
                font-size: 0.95rem;
            }
        }
        /* Features / 核心优势 */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .feature-card {
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 32px 28px;
            transition: var(--transition);
            text-align: center;
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: rgba(37, 99, 235, 0.20);
        }
        .feature-icon {
            width: 56px;
            height: 56px;
            background: linear-gradient(135deg, rgba(37, 99, 235, 0.10), rgba(124, 58, 237, 0.10));
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            font-size: 1.5rem;
            color: var(--primary);
        }
        .feature-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 10px;
        }
        .feature-card p {
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.6;
        }
        @media (max-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .features-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .feature-card {
                padding: 24px 20px;
            }
        }
        /* Categories / 分类入口 */
        .categories-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .category-card {
            border-radius: var(--radius-md);
            overflow: hidden;
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            cursor: pointer;
            position: relative;
        }
        .category-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .category-card img {
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
            transition: var(--transition);
        }
        .category-card:hover img {
            transform: scale(1.03);
        }
        .category-card .cat-body {
            padding: 20px 18px 22px;
        }
        .category-card .cat-body h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 6px;
        }
        .category-card .cat-body p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.5;
            margin-bottom: 12px;
        }
        .category-card .cat-tag {
            display: inline-block;
            background: rgba(37, 99, 235, 0.08);
            color: var(--primary);
            padding: 2px 12px;
            border-radius: 100px;
            font-size: 0.78rem;
            font-weight: 500;
        }
        @media (max-width: 1024px) {
            .categories-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .categories-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
        }
        /* Latest Posts / 最新资讯 */
        .posts-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .post-card {
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
        }
        .post-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .post-card img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
        }
        .post-card .post-body {
            padding: 20px 22px 24px;
        }
        .post-card .post-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 10px;
        }
        .post-card .post-meta .cat {
            background: rgba(230, 126, 0, 0.10);
            color: var(--accent);
            padding: 2px 10px;
            border-radius: 100px;
            font-weight: 500;
        }
        .post-card .post-body h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-dark);
            line-height: 1.4;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .post-card .post-body p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .post-card .post-body .read-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 14px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--primary);
        }
        .post-card .post-body .read-more i {
            font-size: 0.75rem;
            transition: var(--transition);
        }
        .post-card .post-body .read-more:hover i {
            transform: translateX(4px);
        }
        .empty-posts {
            grid-column: 1 / -1;
            text-align: center;
            padding: 48px 24px;
            background: var(--bg-light);
            border-radius: var(--radius-md);
            color: var(--text-muted);
            font-size: 1rem;
        }
        @media (max-width: 1024px) {
            .posts-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .posts-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .post-card .post-body {
                padding: 16px 18px 20px;
            }
        }
        /* Data / 数据板块 */
        .data-section {
            background: var(--bg-dark);
            position: relative;
            overflow: hidden;
        }
        .data-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.06;
            z-index: 0;
        }
        .data-section .container {
            position: relative;
            z-index: 1;
        }
        .data-section .section-title h2 {
            color: #fff;
        }
        .data-section .section-title p {
            color: rgba(255, 255, 255, 0.65);
        }
        .data-section .section-title .tag {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
        }
        .data-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            text-align: center;
        }
        .data-item .number {
            font-size: 2.8rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.02em;
            line-height: 1.2;
        }
        .data-item .number span {
            color: var(--accent-light);
        }
        .data-item .label {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.65);
            margin-top: 8px;
        }
        @media (max-width: 768px) {
            .data-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .data-item .number {
                font-size: 2rem;
            }
        }
        @media (max-width: 480px) {
            .data-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .data-item .number {
                font-size: 1.6rem;
            }
        }
        /* Process / 使用流程 */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
        }
        .process-steps::before {
            content: '';
            position: absolute;
            top: 40px;
            left: 12%;
            right: 12%;
            height: 2px;
            background: linear-gradient(to right, var(--primary), var(--accent-light), var(--primary));
            opacity: 0.25;
            z-index: 0;
        }
        .process-step {
            text-align: center;
            position: relative;
            z-index: 1;
        }
        .process-step .step-num {
            width: 52px;
            height: 52px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            font-weight: 700;
            margin: 0 auto 16px;
            box-shadow: 0 4px 16px rgba(37, 99, 235, 0.25);
        }
        .process-step h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 8px;
        }
        .process-step p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.5;
        }
        @media (max-width: 768px) {
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
                gap: 28px;
            }
            .process-steps::before {
                display: none;
            }
        }
        @media (max-width: 480px) {
            .process-steps {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }
        /* FAQ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(37, 99, 235, 0.20);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            cursor: pointer;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-dark);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
            gap: 12px;
        }
        .faq-question i {
            color: var(--text-muted);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-question.open i {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            padding: 0 22px 18px;
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.7;
            display: none;
        }
        .faq-answer.open {
            display: block;
        }
        /* CTA */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark), #1e3a8a, #172554);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            opacity: 0.08;
            z-index: 0;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-box {
            text-align: center;
            padding: 20px 0;
        }
        .cta-box h2 {
            font-size: 2.4rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }
        .cta-box p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.75);
            max-width: 600px;
            margin: 0 auto 32px;
        }
        .cta-box .btn-cta-large {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: linear-gradient(135deg, var(--accent), #d97706);
            color: #fff;
            border: none;
            border-radius: 100px;
            padding: 16px 40px;
            font-size: 1.1rem;
            font-weight: 700;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 6px 24px rgba(230, 126, 0, 0.4);
        }
        .cta-box .btn-cta-large:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(230, 126, 0, 0.55);
        }
        @media (max-width: 768px) {
            .cta-box h2 {
                font-size: 1.7rem;
            }
            .cta-box p {
                font-size: 0.95rem;
            }
            .cta-box .btn-cta-large {
                padding: 14px 32px;
                font-size: 1rem;
                width: 100%;
                justify-content: center;
            }
        }
        /* Footer */
        .site-footer {
            background: #0f172a;
            color: rgba(255, 255, 255, 0.7);
            padding: 56px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo {
            color: #fff;
            margin-bottom: 14px;
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.55);
            max-width: 320px;
            line-height: 1.6;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-col ul a {
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.55);
            transition: var(--transition);
        }
        .footer-col ul a:hover {
            color: #fff;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom a:hover {
            color: #fff;
        }
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 640px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        /* Back to top */
        .back-to-top {
            position: fixed;
            bottom: 32px;
            right: 32px;
            width: 48px;
            height: 48px;
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 50%;
            font-size: 1.2rem;
            cursor: pointer;
            box-shadow: var(--shadow-md);
            transition: var(--transition);
            z-index: 999;
            display: none;
            align-items: center;
            justify-content: center;
        }
        .back-to-top:hover {
            background: var(--primary-dark);
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .back-to-top.visible {
            display: flex;
        }
        /* Focus / accessibility */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 3px solid rgba(37, 99, 235, 0.5);
            outline-offset: 2px;
        }

/* roulang page: category1 */
:root {
            --primary: #eab308;
            --primary-dark: #ca8a04;
            --primary-light: #fef08a;
            --secondary: #1e293b;
            --accent: #f59e0b;
            --bg-body: #0f172a;
            --bg-card: #1e293b;
            --bg-section: #1e293b;
            --text-main: #f1f5f9;
            --text-weak: #94a3b8;
            --text-inverse: #0f172a;
            --border-color: #334155;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.3);
            --shadow-hover: 0 12px 48px rgba(234, 179, 8, 0.15);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
        }

        *,
        *::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);
            background: var(--bg-body);
            color: var(--text-main);
            line-height: 1.7;
            font-size: 16px;
        }

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

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

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            border: none;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(15, 23, 42, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(51, 65, 85, 0.5);
            transition: background var(--transition);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.5px;
            flex-shrink: 0;
        }

        .logo .logo-icon {
            font-size: 26px;
            color: var(--primary);
        }

        .nav-links {
            display: flex;
            list-style: none;
            gap: 8px;
            align-items: center;
        }

        .nav-links li a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            color: var(--text-weak);
            transition: all var(--transition);
            position: relative;
            letter-spacing: 0.3px;
        }

        .nav-links li a:hover {
            color: var(--text-main);
            background: rgba(234, 179, 8, 0.08);
        }

        .nav-links li a.active {
            color: var(--primary);
            background: rgba(234, 179, 8, 0.12);
        }

        .nav-links li a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
        }

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

        .search-toggle {
            background: rgba(51, 65, 85, 0.5);
            border: 1px solid var(--border-color);
            color: var(--text-weak);
            padding: 8px 16px;
            border-radius: 24px;
            font-size: 14px;
            display: flex;
            align-items: center;
            gap: 8px;
            cursor: pointer;
            transition: all var(--transition);
            min-width: 160px;
        }

        .search-toggle:hover {
            border-color: var(--primary);
            color: var(--text-main);
            background: rgba(234, 179, 8, 0.06);
        }

        .search-toggle i {
            font-size: 13px;
            color: var(--text-weak);
        }

        .btn-cta {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: var(--text-inverse);
            padding: 10px 24px;
            border-radius: 24px;
            font-weight: 600;
            font-size: 14px;
            transition: all var(--transition);
            cursor: pointer;
            border: none;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }

        .btn-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(234, 179, 8, 0.35);
        }

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

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-main);
            font-size: 24px;
            cursor: pointer;
            padding: 4px 8px;
        }

        @media (max-width: 1024px) {
            .search-toggle {
                min-width: auto;
                padding: 8px 12px;
            }
            .search-toggle span {
                display: none;
            }
        }

        @media (max-width: 768px) {
            .site-header .container {
                height: 64px;
            }
            .nav-links {
                position: fixed;
                top: 64px;
                left: 0;
                width: 100%;
                background: rgba(15, 23, 42, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 20px 24px;
                gap: 4px;
                border-bottom: 1px solid var(--border-color);
                transform: translateY(-120%);
                opacity: 0;
                transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
                pointer-events: none;
                box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
            }
            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: all;
            }
            .nav-links li a {
                padding: 14px 16px;
                font-size: 16px;
                width: 100%;
                border-radius: var(--radius-sm);
            }
            .nav-links li a.active::after {
                display: none;
            }
            .mobile-toggle {
                display: block;
            }
            .btn-cta {
                padding: 8px 16px;
                font-size: 13px;
            }
        }

        @media (max-width: 480px) {
            .logo {
                font-size: 18px;
                gap: 6px;
            }
            .logo .logo-icon {
                font-size: 20px;
            }
            .nav-actions {
                gap: 8px;
            }
        }

        /* ===== Hero ===== */
        .hero-section {
            padding: 120px 0 80px;
            background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
            position: relative;
            overflow: hidden;
            min-height: 500px;
            display: flex;
            align-items: center;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.15;
            z-index: 0;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 120px;
            background: linear-gradient(to top, var(--bg-body), transparent);
            z-index: 1;
        }

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

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(234, 179, 8, 0.12);
            border: 1px solid rgba(234, 179, 8, 0.25);
            padding: 6px 18px;
            border-radius: 24px;
            font-size: 13px;
            color: var(--primary);
            font-weight: 500;
            margin-bottom: 24px;
            letter-spacing: 0.5px;
        }

        .hero-title {
            font-size: clamp(2.4rem, 6vw, 4.2rem);
            font-weight: 800;
            line-height: 1.15;
            color: var(--text-main);
            margin-bottom: 20px;
            max-width: 800px;
        }

        .hero-title .highlight {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-desc {
            font-size: 18px;
            color: var(--text-weak);
            max-width: 640px;
            margin-bottom: 36px;
            line-height: 1.8;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: var(--text-inverse);
            padding: 14px 36px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 16px;
            transition: all var(--transition);
            cursor: pointer;
            border: none;
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(234, 179, 8, 0.3);
        }

        .btn-outline {
            background: transparent;
            color: var(--text-main);
            padding: 13px 34px;
            border-radius: 30px;
            font-weight: 500;
            font-size: 16px;
            transition: all var(--transition);
            cursor: pointer;
            border: 1.5px solid var(--border-color);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(234, 179, 8, 0.06);
            transform: translateY(-2px);
        }

        @media (max-width: 768px) {
            .hero-section {
                padding: 100px 0 60px;
                min-height: auto;
            }
            .hero-desc {
                font-size: 16px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .btn-primary,
            .btn-outline {
                justify-content: center;
            }
        }

        /* ===== Section Common ===== */
        .section {
            padding: 80px 0;
        }

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

        .section-header {
            text-align: center;
            margin-bottom: 52px;
        }

        .section-header .label {
            display: inline-block;
            background: rgba(234, 179, 8, 0.1);
            border: 1px solid rgba(234, 179, 8, 0.2);
            padding: 4px 16px;
            border-radius: 20px;
            font-size: 13px;
            color: var(--primary);
            font-weight: 500;
            letter-spacing: 0.5px;
            margin-bottom: 12px;
        }

        .section-header h2 {
            font-size: clamp(1.8rem, 3.5vw, 2.8rem);
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 12px;
            line-height: 1.2;
        }

        .section-header p {
            color: var(--text-weak);
            font-size: 17px;
            max-width: 640px;
            margin: 0 auto;
        }

        @media (max-width: 768px) {
            .section {
                padding: 56px 0;
            }
            .section-header {
                margin-bottom: 36px;
            }
        }

        /* ===== Cards ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 24px;
        }

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

        .card-grid.cols-4 {
            grid-template-columns: repeat(4, 1fr);
        }

        @media (max-width: 1024px) {
            .card-grid.cols-3,
            .card-grid.cols-4 {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 640px) {
            .card-grid.cols-3,
            .card-grid.cols-4,
            .card-grid {
                grid-template-columns: 1fr;
            }
        }

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

        .card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(234, 179, 8, 0.2);
        }

        .card-img {
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
            display: block;
            transition: transform 0.5s ease;
        }

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

        .card-body {
            padding: 22px 24px 26px;
        }

        .card-tag {
            display: inline-block;
            background: rgba(234, 179, 8, 0.1);
            color: var(--primary);
            font-size: 12px;
            font-weight: 500;
            padding: 2px 12px;
            border-radius: 12px;
            margin-bottom: 10px;
            letter-spacing: 0.3px;
        }

        .card-body h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 8px;
            line-height: 1.3;
        }

        .card-body p {
            color: var(--text-weak);
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 16px;
        }

        .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 13px;
            color: var(--text-weak);
            border-top: 1px solid var(--border-color);
            padding-top: 14px;
            margin-top: 4px;
        }

        .card-meta i {
            margin-right: 4px;
            color: var(--primary);
        }

        .card-link {
            color: var(--primary);
            font-weight: 500;
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap var(--transition);
        }

        .card-link:hover {
            gap: 10px;
        }

        /* ===== Stats ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .stat-item {
            text-align: center;
            padding: 32px 16px;
            background: rgba(234, 179, 8, 0.04);
            border: 1px solid rgba(234, 179, 8, 0.1);
            border-radius: var(--radius);
            transition: all var(--transition);
        }

        .stat-item:hover {
            background: rgba(234, 179, 8, 0.08);
            border-color: rgba(234, 179, 8, 0.2);
            transform: translateY(-4px);
        }

        .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
        }

        .stat-label {
            color: var(--text-weak);
            font-size: 15px;
            margin-top: 8px;
            font-weight: 400;
        }

        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-item {
                padding: 24px 12px;
            }
            .stat-number {
                font-size: 2rem;
            }
        }

        @media (max-width: 480px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        /* ===== Features ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            padding: 32px 28px;
            transition: all var(--transition);
            box-shadow: var(--shadow-card);
        }

        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(234, 179, 8, 0.2);
        }

        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            background: rgba(234, 179, 8, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: var(--primary);
            margin-bottom: 18px;
            transition: all var(--transition);
        }

        .feature-card:hover .feature-icon {
            background: var(--primary);
            color: var(--text-inverse);
        }

        .feature-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 10px;
        }

        .feature-card p {
            color: var(--text-weak);
            font-size: 14px;
            line-height: 1.7;
        }

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

        @media (max-width: 640px) {
            .features-grid {
                grid-template-columns: 1fr;
            }
            .feature-card {
                padding: 24px 20px;
            }
        }

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

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(234, 179, 8, 0.2);
        }

        .faq-question {
            padding: 18px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            font-weight: 500;
            color: var(--text-main);
            font-size: 16px;
            transition: background var(--transition);
            gap: 16px;
        }

        .faq-question:hover {
            background: rgba(234, 179, 8, 0.04);
        }

        .faq-question i {
            color: var(--primary);
            font-size: 14px;
            transition: transform var(--transition);
            flex-shrink: 0;
        }

        .faq-item.active .faq-question i {
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--text-weak);
            font-size: 15px;
            line-height: 1.8;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        @media (max-width: 768px) {
            .faq-question {
                padding: 14px 18px;
                font-size: 15px;
            }
            .faq-answer {
                font-size: 14px;
            }
            .faq-item.active .faq-answer {
                padding: 0 18px 16px;
            }
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 80px 0;
            background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
            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 .container {
            position: relative;
            z-index: 1;
            text-align: center;
        }

        .cta-section h2 {
            font-size: clamp(1.8rem, 3.5vw, 2.8rem);
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 16px;
        }

        .cta-section p {
            color: var(--text-weak);
            font-size: 17px;
            max-width: 560px;
            margin: 0 auto 32px;
        }

        .cta-actions {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 16px;
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-weak);
            margin-bottom: 24px;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--text-weak);
            transition: color var(--transition);
        }

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

        .breadcrumb span {
            color: var(--text-weak);
        }

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

        .breadcrumb i {
            font-size: 12px;
            color: var(--border-color);
        }

        /* ===== Category Intro ===== */
        .category-intro {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .category-intro-text h1 {
            font-size: clamp(1.6rem, 3vw, 2.4rem);
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 16px;
            line-height: 1.2;
        }

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

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

        .category-intro-img img {
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
            display: block;
        }

        @media (max-width: 768px) {
            .category-intro {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .category-intro-img {
                order: -1;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #0a0f1a;
            border-top: 1px solid var(--border-color);
            padding: 60px 0 30px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand .logo {
            margin-bottom: 14px;
        }

        .footer-brand p {
            color: var(--text-weak);
            font-size: 14px;
            line-height: 1.8;
            max-width: 360px;
        }

        .footer-col h4 {
            color: var(--text-main);
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

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

        .footer-col ul li {
            margin-bottom: 10px;
        }

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

        .footer-col ul li a:hover {
            color: var(--primary);
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: var(--text-weak);
        }

        .footer-bottom a {
            color: var(--text-weak);
            transition: color var(--transition);
        }

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

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px 24px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 480px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .site-footer {
                padding: 40px 0 20px;
            }
        }

        /* ===== Page Title ===== */
        .page-title-area {
            padding: 120px 0 40px;
            background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
            position: relative;
            overflow: hidden;
        }

        .page-title-area::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.1;
            z-index: 0;
        }

        .page-title-area .container {
            position: relative;
            z-index: 1;
        }

        /* ===== Content List ===== */
        .content-list {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
            max-width: 900px;
            margin: 0 auto;
        }

        .content-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            padding: 24px 28px;
            transition: all var(--transition);
            display: flex;
            gap: 20px;
            align-items: flex-start;
        }

        .content-item:hover {
            border-color: rgba(234, 179, 8, 0.2);
            transform: translateX(4px);
            box-shadow: var(--shadow-card);
        }

        .content-item .num {
            font-size: 28px;
            font-weight: 800;
            color: rgba(234, 179, 8, 0.2);
            line-height: 1;
            min-width: 44px;
            font-feature-settings: "tnum";
        }

        .content-item .info h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 6px;
        }

        .content-item .info p {
            color: var(--text-weak);
            font-size: 14px;
            line-height: 1.7;
        }

        .content-item .info .meta {
            display: flex;
            gap: 16px;
            font-size: 13px;
            color: var(--text-weak);
            margin-top: 8px;
        }

        .content-item .info .meta i {
            color: var(--primary);
            margin-right: 4px;
        }

        @media (max-width: 640px) {
            .content-item {
                padding: 18px 16px;
                flex-direction: column;
                gap: 8px;
            }
            .content-item .num {
                font-size: 22px;
            }
        }

        /* ===== Utility ===== */
        .text-primary {
            color: var(--primary);
        }
        .bg-primary-soft {
            background: rgba(234, 179, 8, 0.06);
        }
        .border-primary-soft {
            border-color: rgba(234, 179, 8, 0.15);
        }

        .gap-section {
            height: 1px;
            background: linear-gradient(to right, transparent, var(--border-color), transparent);
            margin: 0;
        }

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

        /* ===== Skip Link ===== */
        .skip-link {
            position: absolute;
            top: -100px;
            left: 16px;
            background: var(--primary);
            color: var(--text-inverse);
            padding: 8px 20px;
            border-radius: 4px;
            font-weight: 600;
            z-index: 9999;
            transition: top 0.3s;
        }
        .skip-link:focus {
            top: 12px;
        }

/* roulang page: article */
:root {
            --primary: #1a56db;
            --primary-dark: #1340a0;
            --primary-light: #3b78e7;
            --secondary: #f59e0b;
            --secondary-dark: #d97706;
            --accent: #ef4444;
            --bg-light: #f9fafb;
            --bg-white: #ffffff;
            --text-dark: #111827;
            --text-main: #1f2937;
            --text-muted: #6b7280;
            --text-light: #9ca3af;
            --border: #e5e7eb;
            --border-light: #f3f4f6;
            --radius-sm: 0.375rem;
            --radius-md: 0.75rem;
            --radius-lg: 1rem;
            --radius-xl: 1.25rem;
            --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
            --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
            --shadow-lg: 0 10px 30px rgba(0,0,0,0.12);
            --shadow-xl: 0 20px 50px rgba(0,0,0,0.18);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
        }
        *,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
        html{scroll-behavior:smooth;font-size:16px}
        body{font-family:var(--font-sans);color:var(--text-main);background:var(--bg-light);line-height:1.7;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
        a{color:inherit;text-decoration:none;transition:var(--transition)}
        img{max-width:100%;height:auto;display:block}
        button,input,textarea{font-family:inherit;font-size:inherit}
        ul,ol{list-style:none}
        .container{max-width:1200px;margin:0 auto;padding:0 1.5rem}
        .container-narrow{max-width:820px;margin:0 auto;padding:0 1.5rem}
        /* Header & Nav */
        .site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,0.95);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--border);transition:var(--transition)}
        .site-header .container{display:flex;align-items:center;justify-content:space-between;height:72px;gap:1.5rem}
        .logo{display:flex;align-items:center;gap:0.5rem;font-weight:700;font-size:1.35rem;color:var(--primary);white-space:nowrap}
        .logo-icon{width:36px;height:36px;background:linear-gradient(135deg,var(--primary),var(--primary-light));border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;color:#fff;font-size:1.1rem}
        .nav-links{display:flex;align-items:center;gap:0.25rem}
        .nav-links li a{display:block;padding:0.5rem 1rem;font-size:0.925rem;font-weight:500;color:var(--text-muted);border-radius:var(--radius-md);transition:var(--transition)}
        .nav-links li a:hover{color:var(--primary);background:rgba(26,86,219,0.06)}
        .nav-links li a.active{color:var(--primary);background:rgba(26,86,219,0.1);font-weight:600}
        .nav-actions{display:flex;align-items:center;gap:0.75rem}
        .search-box{position:relative;width:220px}
        .search-box input{width:100%;padding:0.5rem 1rem 0.5rem 2.4rem;border:1px solid var(--border);border-radius:999px;background:var(--bg-light);font-size:0.875rem;color:var(--text-main);outline:none;transition:var(--transition)}
        .search-box input:focus{border-color:var(--primary-light);box-shadow:0 0 0 3px rgba(26,86,219,0.12);background:var(--bg-white)}
        .search-box i{position:absolute;left:0.85rem;top:50%;transform:translateY(-50%);color:var(--text-light);font-size:0.875rem}
        .btn{display:inline-flex;align-items:center;justify-content:center;gap:0.5rem;padding:0.55rem 1.35rem;font-weight:600;font-size:0.9rem;border-radius:var(--radius-md);border:none;cursor:pointer;transition:var(--transition);white-space:nowrap}
        .btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-light));color:#fff;box-shadow:0 4px 14px rgba(26,86,219,0.3)}
        .btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(26,86,219,0.4)}
        .btn-primary:active{transform:translateY(0)}
        .btn-outline{background:transparent;border:1.5px solid var(--primary);color:var(--primary)}
        .btn-outline:hover{background:var(--primary);color:#fff;transform:translateY(-2px)}
        .btn-secondary{background:var(--secondary);color:#fff;box-shadow:0 4px 14px rgba(245,158,11,0.3)}
        .btn-secondary:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(245,158,11,0.4)}
        .btn-sm{padding:0.4rem 1rem;font-size:0.825rem}
        .btn-lg{padding:0.75rem 2rem;font-size:1.05rem}
        .mobile-toggle{display:none;background:none;border:none;font-size:1.5rem;color:var(--text-main);cursor:pointer;padding:0.25rem;border-radius:var(--radius-sm);transition:var(--transition)}
        .mobile-toggle:hover{background:var(--bg-light)}
        /* Article Banner */
        .article-banner{position:relative;min-height:360px;display:flex;align-items:center;background:linear-gradient(135deg, #0f1a3a 0%, #1a2d5a 50%, #0f1a3a 100%);overflow:hidden}
        .article-banner-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.png');background-size:cover;background-position:center;opacity:0.3;mix-blend-mode:overlay}
        .article-banner::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg, rgba(15,26,58,0.4) 0%, rgba(15,26,58,0.8) 100%)}
        .article-banner .container{position:relative;z-index:2;padding-top:2rem;padding-bottom:2rem}
        .article-banner .category-tag{display:inline-flex;align-items:center;gap:0.4rem;padding:0.3rem 1rem;background:rgba(255,255,255,0.15);backdrop-filter:blur(6px);border:1px solid rgba(255,255,255,0.2);border-radius:999px;color:#fff;font-size:0.8rem;font-weight:500;margin-bottom:1rem}
        .article-banner .category-tag i{font-size:0.7rem}
        .article-banner h1{font-size:2.5rem;font-weight:800;color:#fff;line-height:1.25;max-width:780px;margin-bottom:1rem;text-shadow:0 2px 20px rgba(0,0,0,0.3)}
        .article-banner .meta-info{display:flex;flex-wrap:wrap;gap:1.25rem;color:rgba(255,255,255,0.8);font-size:0.875rem}
        .article-banner .meta-info span{display:flex;align-items:center;gap:0.4rem}
        .article-banner .meta-info i{font-size:0.8rem;opacity:0.7}
        /* Article Body */
        .article-section{padding:3rem 0}
        .article-card{background:var(--bg-white);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);overflow:hidden;padding:2.5rem}
        .article-content{font-size:1.05rem;line-height:1.85;color:var(--text-main)}
        .article-content h2{font-size:1.65rem;font-weight:700;margin:2rem 0 1rem;color:var(--text-dark)}
        .article-content h3{font-size:1.35rem;font-weight:600;margin:1.75rem 0 0.75rem;color:var(--text-dark)}
        .article-content p{margin-bottom:1.25rem}
        .article-content ul,.article-content ol{margin:1rem 0 1.25rem 1.5rem}
        .article-content ul{list-style:disc}
        .article-content ol{list-style:decimal}
        .article-content li{margin-bottom:0.4rem}
        .article-content img{border-radius:var(--radius-md);margin:1.5rem auto;max-width:100%}
        .article-content blockquote{border-left:4px solid var(--primary);padding:1rem 1.5rem;margin:1.5rem 0;background:rgba(26,86,219,0.04);border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:var(--text-muted);font-style:italic}
        .article-content a{color:var(--primary);border-bottom:1px solid transparent}
        .article-content a:hover{border-bottom-color:var(--primary)}
        .article-tags{margin-top:2rem;padding-top:1.5rem;border-top:1px solid var(--border);display:flex;flex-wrap:wrap;align-items:center;gap:0.75rem}
        .article-tags .label{font-size:0.85rem;color:var(--text-muted);font-weight:500}
        .article-tags .tag{display:inline-block;padding:0.25rem 0.8rem;background:var(--bg-light);border:1px solid var(--border);border-radius:999px;font-size:0.8rem;color:var(--text-muted);transition:var(--transition)}
        .article-tags .tag:hover{background:var(--primary);color:#fff;border-color:var(--primary)}
        .article-share{display:flex;align-items:center;gap:0.5rem;margin-top:1rem}
        .article-share .label{font-size:0.85rem;color:var(--text-muted);font-weight:500}
        .article-share a{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:50%;background:var(--bg-light);color:var(--text-muted);transition:var(--transition);font-size:0.9rem}
        .article-share a:hover{background:var(--primary);color:#fff;transform:translateY(-2px)}
        /* Article Not Found */
        .not-found-box{text-align:center;padding:4rem 2rem}
        .not-found-box .icon{font-size:4rem;color:var(--text-light);margin-bottom:1rem}
        .not-found-box h2{font-size:1.5rem;font-weight:700;color:var(--text-dark);margin-bottom:0.5rem}
        .not-found-box p{color:var(--text-muted);margin-bottom:1.5rem}
        /* Article Nav (prev/next) */
        .article-nav-grid{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem;margin-top:2rem}
        .article-nav-item{display:flex;flex-direction:column;padding:1.25rem 1.5rem;background:var(--bg-white);border:1px solid var(--border);border-radius:var(--radius-md);transition:var(--transition)}
        .article-nav-item:hover{border-color:var(--primary-light);box-shadow:var(--shadow-md);transform:translateY(-2px)}
        .article-nav-item .dir{font-size:0.75rem;font-weight:600;text-transform:uppercase;letter-spacing:0.05em;color:var(--text-light);margin-bottom:0.25rem}
        .article-nav-item .title{font-size:0.95rem;font-weight:600;color:var(--text-dark);line-height:1.4}
        .article-nav-item.next{text-align:right}
        .article-nav-item.next .dir{text-align:right}
        /* Related Posts */
        .related-section{background:var(--bg-white);padding:3rem 0}
        .related-section h2{font-size:1.75rem;font-weight:700;color:var(--text-dark);margin-bottom:0.5rem;text-align:center}
        .related-section .subtitle{text-align:center;color:var(--text-muted);margin-bottom:2.5rem;font-size:0.95rem}
        .related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem}
        .related-card{background:var(--bg-white);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;transition:var(--transition)}
        .related-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:transparent}
        .related-card .img-wrap{height:180px;overflow:hidden;background:var(--bg-light)}
        .related-card .img-wrap img{width:100%;height:100%;object-fit:cover;transition:var(--transition)}
        .related-card:hover .img-wrap img{transform:scale(1.05)}
        .related-card .info{padding:1.25rem}
        .related-card .info .cat{font-size:0.75rem;font-weight:600;color:var(--primary);text-transform:uppercase;letter-spacing:0.04em;margin-bottom:0.25rem}
        .related-card .info h3{font-size:1rem;font-weight:600;color:var(--text-dark);line-height:1.4;margin-bottom:0.35rem}
        .related-card .info p{font-size:0.85rem;color:var(--text-muted);line-height:1.5}
        /* CTA Section */
        .cta-section{position:relative;padding:4rem 0;background:linear-gradient(135deg, #0f1a3a 0%, #1a2d5a 50%, #0f1a3a 100%);overflow:hidden;text-align:center}
        .cta-section::before{content:'';position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.png');background-size:cover;background-position:center;opacity:0.12;mix-blend-mode:overlay}
        .cta-section .container{position:relative;z-index:2}
        .cta-section h2{font-size:2rem;font-weight:800;color:#fff;margin-bottom:0.75rem}
        .cta-section p{font-size:1.05rem;color:rgba(255,255,255,0.8);max-width:600px;margin:0 auto 1.75rem}
        .cta-section .btn-group{display:flex;justify-content:center;gap:1rem;flex-wrap:wrap}
        /* Footer */
        .site-footer{background:#0f172a;color:rgba(255,255,255,0.7);padding:3.5rem 0 1.5rem}
        .footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:2.5rem;margin-bottom:2.5rem}
        .footer-brand .logo{color:#fff;margin-bottom:1rem}
        .footer-brand .logo .logo-icon{background:linear-gradient(135deg,var(--primary),var(--primary-light))}
        .footer-brand p{font-size:0.9rem;line-height:1.7;color:rgba(255,255,255,0.6);max-width:320px}
        .footer-col h4{color:#fff;font-size:0.95rem;font-weight:600;margin-bottom:1rem}
        .footer-col ul li{margin-bottom:0.5rem}
        .footer-col ul li a{font-size:0.875rem;color:rgba(255,255,255,0.6);transition:var(--transition)}
        .footer-col ul li a:hover{color:var(--primary-light);padding-left:4px}
        .footer-bottom{border-top:1px solid rgba(255,255,255,0.08);padding-top:1.5rem;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:0.75rem;font-size:0.8rem;color:rgba(255,255,255,0.4)}
        .footer-bottom a{color:rgba(255,255,255,0.5)}
        .footer-bottom a:hover{color:var(--primary-light)}
        /* Responsive */
        @media (max-width:1024px){
            .footer-grid{grid-template-columns:1fr 1fr;gap:2rem}
            .article-banner h1{font-size:2rem}
        }
        @media (max-width:768px){
            .site-header .container{height:64px}
            .nav-links{display:none;position:absolute;top:64px;left:0;right:0;background:rgba(255,255,255,0.98);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--border);flex-direction:column;padding:0.5rem 1.5rem 1rem;box-shadow:var(--shadow-lg)}
            .nav-links.open{display:flex}
            .nav-links li a{padding:0.6rem 0.75rem;width:100%}
            .search-box{width:160px}
            .mobile-toggle{display:block}
            .article-banner{min-height:280px}
            .article-banner h1{font-size:1.6rem}
            .article-card{padding:1.5rem}
            .article-content{font-size:1rem}
            .article-nav-grid{grid-template-columns:1fr}
            .related-grid{grid-template-columns:1fr 1fr}
            .cta-section h2{font-size:1.5rem}
            .footer-grid{grid-template-columns:1fr 1fr;gap:1.5rem}
        }
        @media (max-width:520px){
            .container{padding:0 1rem}
            .logo{font-size:1.1rem}
            .logo-icon{width:30px;height:30px;font-size:0.9rem}
            .search-box{width:120px}
            .search-box input{padding:0.4rem 0.75rem 0.4rem 2rem;font-size:0.8rem}
            .nav-actions .btn{font-size:0.8rem;padding:0.4rem 0.8rem}
            .article-banner h1{font-size:1.35rem}
            .article-card{padding:1rem}
            .article-content{font-size:0.95rem}
            .article-content h2{font-size:1.3rem}
            .article-content h3{font-size:1.1rem}
            .related-grid{grid-template-columns:1fr}
            .related-card .img-wrap{height:150px}
            .cta-section h2{font-size:1.25rem}
            .cta-section p{font-size:0.9rem}
            .footer-grid{grid-template-columns:1fr;gap:1.5rem}
            .footer-bottom{flex-direction:column;text-align:center}
        }
        @media (max-width:400px){
            .search-box{width:100px}
            .nav-actions .btn span{display:none}
        }
        /* Utility */
        .text-primary{color:var(--primary)}
        .bg-primary-light{background:rgba(26,86,219,0.06)}
        .mt-2{margin-top:2rem}
        .mb-2{margin-bottom:2rem}
        .gap-1{gap:1rem}

/* roulang page: category2 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #d4a84b;
            --primary-light: #e8c87a;
            --primary-dark: #b88d2e;
            --accent: #c0392b;
            --accent-light: #e74c3c;
            --bg-dark: #0b0e14;
            --bg-card: #141a24;
            --bg-section: #0f141e;
            --bg-light: #1a2230;
            --text-white: #f1f1f1;
            --text-light: #c8cdd6;
            --text-muted: #8892a4;
            --border-dark: #2a3344;
            --border-light: #3a465a;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --shadow-card: 0 12px 32px rgba(0, 0, 0, 0.5);
            --shadow-hover: 0 20px 48px rgba(0, 0, 0, 0.7);
            --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --container-max: 1200px;
            --gap: 32px;
            --gap-lg: 64px;
        }

        /* ===== 基础 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);
            background: var(--bg-dark);
            color: var(--text-white);
            line-height: 1.65;
            font-size: 16px;
        }
        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,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            border: none;
            background: transparent;
            color: inherit;
        }
        button {
            cursor: pointer;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 600;
            line-height: 1.3;
            letter-spacing: -0.01em;
        }

        /* ===== 容器 ===== */
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
        }
        @media (min-width:768px) {
            .container {
                padding: 0 32px;
            }
        }
        @media (min-width:1024px) {
            .container {
                padding: 0 40px;
            }
        }

        /* ===== 滚动条 ===== */
        ::-webkit-scrollbar {
            width: 6px;
            height: 6px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-dark);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--border-light);
            border-radius: 8px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--primary);
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(11, 14, 20, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(42, 51, 68, 0.5);
            transition: var(--transition);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--text-white);
            white-space: nowrap;
        }
        .logo-icon {
            color: var(--primary);
            font-size: 26px;
        }
        .logo:hover {
            color: var(--primary-light);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-links li a {
            display: block;
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            color: var(--text-light);
            transition: var(--transition);
            position: relative;
        }
        .nav-links li a:hover {
            color: var(--text-white);
            background: rgba(212, 168, 75, 0.08);
        }
        .nav-links li a.active {
            color: var(--primary);
            background: rgba(212, 168, 75, 0.12);
        }
        .nav-links li a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--primary);
            border-radius: 4px;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .nav-search {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 40px;
            padding: 6px 16px 6px 18px;
            gap: 8px;
            transition: var(--transition);
            min-width: 160px;
        }
        .nav-search i {
            color: var(--text-muted);
            font-size: 14px;
        }
        .nav-search input {
            background: transparent;
            border: none;
            padding: 4px 0;
            font-size: 14px;
            color: var(--text-white);
            width: 100%;
            min-width: 60px;
        }
        .nav-search input::placeholder {
            color: var(--text-muted);
            font-size: 13px;
        }
        .nav-search:focus-within {
            border-color: var(--primary);
            background: rgba(212, 168, 75, 0.06);
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 22px;
            border-radius: 40px;
            font-size: 14px;
            font-weight: 600;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #0b0e14;
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(212, 168, 75, 0.35);
            color: #0b0e14;
        }
        .nav-cta i {
            font-size: 13px;
        }

        /* 移动端菜单按钮 */
        .menu-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-dark);
            gap: 5px;
            cursor: pointer;
            transition: var(--transition);
        }
        .menu-toggle span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--text-light);
            border-radius: 4px;
            transition: var(--transition);
        }
        .menu-toggle:hover span {
            background: var(--primary);
        }

        /* ===== 按钮通用 ===== */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 12px 32px;
            border-radius: 40px;
            font-size: 16px;
            font-weight: 600;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #0b0e14;
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(212, 168, 75, 0.35);
            color: #0b0e14;
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 12px 32px;
            border-radius: 40px;
            font-size: 16px;
            font-weight: 600;
            background: transparent;
            color: var(--text-white);
            border: 1.5px solid var(--border-light);
            transition: var(--transition);
            cursor: pointer;
        }
        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-3px);
            box-shadow: 0 8px 24px rgba(212, 168, 75, 0.15);
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: 80px 0;
        }
        .section-dark {
            background: var(--bg-section);
        }
        .section-card {
            background: var(--bg-card);
        }
        .section-title {
            font-size: 36px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-white);
            letter-spacing: -0.02em;
        }
        .section-sub {
            font-size: 18px;
            color: var(--text-muted);
            max-width: 640px;
            line-height: 1.6;
        }
        .section-header {
            text-align: center;
            margin-bottom: 52px;
        }
        .section-header .section-sub {
            margin: 0 auto;
        }
        .section-header-left {
            text-align: left;
            margin-bottom: 48px;
        }
        .section-header-left .section-sub {
            margin: 0;
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 14px;
            border-radius: 40px;
            font-size: 13px;
            font-weight: 500;
            background: rgba(212, 168, 75, 0.12);
            color: var(--primary);
            border: 1px solid rgba(212, 168, 75, 0.15);
            margin-bottom: 14px;
            letter-spacing: 0.3px;
        }
        .badge i {
            font-size: 12px;
        }

        .divider {
            width: 60px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
            margin: 18px 0 24px 0;
        }
        .divider-center {
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 75vh;
            display: flex;
            align-items: center;
            padding: 120px 0 80px;
            overflow: hidden;
            background: var(--bg-dark);
        }
        .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(135deg, rgba(11, 14, 20, 0.92) 0%, rgba(11, 14, 20, 0.60) 50%, rgba(11, 14, 20, 0.88) 100%);
            z-index: 0;
        }
        .hero .container {
            position: relative;
            z-index: 2;
        }
        .hero-content {
            max-width: 720px;
        }
        .hero-content .badge {
            background: rgba(212, 168, 75, 0.18);
            border-color: rgba(212, 168, 75, 0.25);
        }
        .hero-title {
            font-size: clamp(36px, 6vw, 62px);
            font-weight: 800;
            line-height: 1.15;
            margin-bottom: 20px;
            letter-spacing: -0.02em;
        }
        .hero-title span {
            color: var(--primary);
        }
        .hero-desc {
            font-size: 18px;
            color: var(--text-light);
            max-width: 580px;
            margin-bottom: 36px;
            line-height: 1.7;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }
        .hero-stats {
            display: flex;
            gap: 36px;
            margin-top: 52px;
            flex-wrap: wrap;
        }
        .hero-stat h3 {
            font-size: 30px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
        }
        .hero-stat p {
            font-size: 14px;
            color: var(--text-muted);
            margin-top: 2px;
        }

        /* ===== 卡片通用 ===== */
        .card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-dark);
            padding: 28px 24px;
            transition: var(--transition);
            overflow: hidden;
        }
        .card:hover {
            border-color: rgba(212, 168, 75, 0.2);
            box-shadow: var(--shadow-hover);
            transform: translateY(-6px);
        }
        .card-img {
            border-radius: var(--radius-sm);
            overflow: hidden;
            margin-bottom: 18px;
            aspect-ratio: 16/9;
            background: var(--bg-light);
        }
        .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .card:hover .card-img img {
            transform: scale(1.04);
        }
        .card-title {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text-white);
        }
        .card-desc {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 16px;
        }
        .card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 12px;
        }
        .card-tag {
            padding: 3px 12px;
            border-radius: 40px;
            font-size: 12px;
            font-weight: 500;
            background: rgba(255, 255, 255, 0.04);
            color: var(--text-muted);
            border: 1px solid var(--border-dark);
        }
        .card-tag.highlight {
            background: rgba(212, 168, 75, 0.1);
            color: var(--primary);
            border-color: rgba(212, 168, 75, 0.15);
        }

        /* ===== 游戏分类网格 ===== */
        .game-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            gap: var(--gap);
        }

        /* ===== 优势特色 ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: var(--gap);
        }
        .feature-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-dark);
            padding: 32px 28px;
            transition: var(--transition);
            text-align: center;
        }
        .feature-card:hover {
            border-color: rgba(212, 168, 75, 0.2);
            box-shadow: var(--shadow-hover);
            transform: translateY(-6px);
        }
        .feature-icon {
            width: 60px;
            height: 60px;
            border-radius: 50%;
            background: rgba(212, 168, 75, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 26px;
            color: var(--primary);
            transition: var(--transition);
        }
        .feature-card:hover .feature-icon {
            background: rgba(212, 168, 75, 0.2);
            transform: scale(1.06);
        }
        .feature-card h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--text-white);
        }
        .feature-card p {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ===== 数据统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
            gap: var(--gap);
            text-align: center;
        }
        .stat-item {
            padding: 24px 16px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-dark);
            transition: var(--transition);
        }
        .stat-item:hover {
            border-color: rgba(212, 168, 75, 0.15);
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .stat-number {
            font-size: 38px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }
        .stat-label {
            font-size: 15px;
            color: var(--text-muted);
            margin-top: 6px;
        }

        /* ===== 品牌/供应商 ===== */
        .brand-grid {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 28px 48px;
            align-items: center;
        }
        .brand-item {
            padding: 14px 28px;
            background: var(--bg-card);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-sm);
            font-size: 18px;
            font-weight: 500;
            color: var(--text-muted);
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 12px;
            letter-spacing: 0.5px;
        }
        .brand-item i {
            font-size: 22px;
            color: var(--primary);
        }
        .brand-item:hover {
            border-color: rgba(212, 168, 75, 0.2);
            color: var(--text-light);
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(212, 168, 75, 0.15);
        }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 24px;
            font-size: 17px;
            font-weight: 500;
            color: var(--text-white);
            cursor: pointer;
            transition: var(--transition);
            gap: 16px;
        }
        .faq-question i {
            color: var(--primary);
            font-size: 14px;
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-question.open i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 24px 20px;
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
            display: none;
        }
        .faq-answer.open {
            display: block;
        }
        .faq-item.open .faq-question {
            color: var(--primary);
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--bg-section);
            border-top: 1px solid var(--border-dark);
            border-bottom: 1px solid var(--border-dark);
        }
        .cta-box {
            background: linear-gradient(135deg, rgba(212, 168, 75, 0.06), rgba(212, 168, 75, 0.02));
            border: 1px solid rgba(212, 168, 75, 0.12);
            border-radius: var(--radius-lg);
            padding: 56px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-box::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.06;
            z-index: 0;
        }
        .cta-box .container {
            position: relative;
            z-index: 1;
        }
        .cta-box h2 {
            font-size: 34px;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .cta-box p {
            font-size: 17px;
            color: var(--text-muted);
            max-width: 520px;
            margin: 0 auto 28px;
            line-height: 1.6;
        }
        .cta-box .btn-primary {
            font-size: 17px;
            padding: 14px 40px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #080b10;
            border-top: 1px solid var(--border-dark);
            padding: 56px 0 28px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 40px 32px;
            margin-bottom: 36px;
        }
        .footer-brand .logo {
            font-size: 20px;
            margin-bottom: 14px;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 300px;
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--primary);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid var(--border-dark);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-muted);
        }
        .footer-bottom a:hover {
            color: var(--primary);
        }

        /* ===== 响应式 ===== */
        @media (max-width:1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .footer-brand p {
                max-width: 100%;
            }
        }

        @media (max-width:820px) {
            .nav-links {
                gap: 4px;
            }
            .nav-links li a {
                padding: 6px 12px;
                font-size: 14px;
            }
            .nav-search {
                min-width: 120px;
            }
            .nav-search input {
                min-width: 40px;
            }
            .nav-cta {
                padding: 6px 16px;
                font-size: 13px;
            }
            .hero {
                min-height: 60vh;
                padding: 100px 0 60px;
            }
            .hero-title {
                font-size: 32px;
            }
            .hero-stats {
                gap: 24px;
            }
            .hero-stat h3 {
                font-size: 24px;
            }
            .section {
                padding: 56px 0;
            }
            .section-title {
                font-size: 28px;
            }
            .game-grid {
                grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
                gap: 20px;
            }
            .feature-grid {
                grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
                gap: 20px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .cta-box {
                padding: 40px 24px;
            }
            .cta-box h2 {
                font-size: 26px;
            }
        }

        @media (max-width:640px) {
            .site-header .container {
                height: 60px;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: 60px;
                left: 0;
                right: 0;
                background: rgba(11, 14, 20, 0.98);
                backdrop-filter: blur(18px);
                flex-direction: column;
                padding: 16px 20px 24px;
                border-bottom: 1px solid var(--border-dark);
                gap: 6px;
                box-shadow: 0 20px 48px rgba(0, 0, 0, 0.6);
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links li a {
                padding: 12px 16px;
                font-size: 16px;
                border-radius: var(--radius-sm);
            }
            .nav-links li a.active::after {
                display: none;
            }
            .nav-links li a.active {
                background: rgba(212, 168, 75, 0.12);
                color: var(--primary);
            }
            .menu-toggle {
                display: flex;
            }
            .nav-search {
                min-width: 100px;
            }
            .nav-search input {
                min-width: 30px;
                font-size: 13px;
            }
            .nav-cta span {
                display: none;
            }
            .nav-cta {
                padding: 6px 14px;
            }
            .nav-cta i {
                margin: 0;
            }
            .hero {
                min-height: 50vh;
                padding: 80px 0 48px;
            }
            .hero-title {
                font-size: 30px;
            }
            .hero-desc {
                font-size: 16px;
            }
            .hero-stats {
                gap: 16px;
                margin-top: 32px;
            }
            .hero-stat h3 {
                font-size: 22px;
            }
            .section {
                padding: 40px 0;
            }
            .section-title {
                font-size: 24px;
            }
            .section-sub {
                font-size: 16px;
            }
            .section-header {
                margin-bottom: 32px;
            }
            .game-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .feature-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .stat-number {
                font-size: 28px;
            }
            .brand-grid {
                gap: 16px 24px;
            }
            .brand-item {
                padding: 10px 18px;
                font-size: 15px;
            }
            .faq-question {
                padding: 16px 18px;
                font-size: 15px;
            }
            .faq-answer {
                padding: 0 18px 16px;
                font-size: 14px;
            }
            .cta-box {
                padding: 32px 18px;
                border-radius: var(--radius-md);
            }
            .cta-box h2 {
                font-size: 22px;
            }
            .cta-box p {
                font-size: 15px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
            .btn-primary,
            .btn-outline {
                padding: 10px 24px;
                font-size: 14px;
            }
        }

        @media (max-width:400px) {
            .hero-title {
                font-size: 26px;
            }
            .hero-stats {
                flex-direction: column;
                gap: 12px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .stat-number {
                font-size: 24px;
            }
        }

        /* 辅助 */
        .text-primary {
            color: var(--primary);
        }
        .text-muted {
            color: var(--text-muted);
        }
        .gap-sm {
            gap: 12px;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .mb-24 {
            margin-bottom: 24px;
        }
        .mb-32 {
            margin-bottom: 32px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }