/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --color-primary: #0F766E;
            --color-primary-dark: #0B5E57;
            --color-primary-light: #14B8A6;
            --color-secondary: #0EA5E9;
            --color-secondary-dark: #0284C7;
            --color-accent: #F59E0B;
            --color-bg: #F8FAFC;
            --color-bg-alt: #F1F5F9;
            --color-bg-card: #FFFFFF;
            --color-text: #1E293B;
            --color-text-secondary: #64748B;
            --color-text-muted: #94A3B8;
            --color-border: #E2E8F0;
            --color-border-light: #F1F5F9;
            --color-success: #10B981;
            --color-white: #FFFFFF;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 24px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.10);
            --shadow-xl: 0 20px 48px rgba(0, 0, 0, 0.12);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            --spacing-section: 5rem;
            --spacing-section-mobile: 3rem;
            --container-max: 1200px;
            --header-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

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

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

        a:focus-visible {
            outline: 2px solid var(--color-primary-light);
            outline-offset: 2px;
            border-radius: var(--radius-sm);
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

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

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--color-text);
        }

        h1 {
            font-size: 2.75rem;
        }
        h2 {
            font-size: 2rem;
        }
        h3 {
            font-size: 1.375rem;
        }
        h4 {
            font-size: 1.125rem;
        }

        /* ===== Container ===== */
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--color-border-light);
            height: var(--header-height);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-md);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
        }

        .site-logo {
            display: flex;
            align-items: center;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--color-primary);
            letter-spacing: -0.02em;
            gap: 8px;
            flex-shrink: 0;
        }

        .site-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 1.1rem;
            font-weight: 800;
        }

        .site-logo .logo-text {
            background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .main-nav a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.925rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            transition: all var(--transition);
            position: relative;
        }

        .main-nav a:hover {
            color: var(--color-primary);
            background: rgba(15, 118, 110, 0.06);
        }

        .main-nav a.active {
            color: var(--color-primary);
            background: rgba(15, 118, 110, 0.10);
            font-weight: 600;
        }

        .nav-search {
            display: flex;
            align-items: center;
            background: var(--color-bg-alt);
            border-radius: 50px;
            padding: 6px 6px 6px 16px;
            border: 1px solid var(--color-border);
            transition: all var(--transition);
            width: 200px;
            margin-left: 8px;
        }

        .nav-search:focus-within {
            border-color: var(--color-primary-light);
            box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.12);
        }

        .nav-search input {
            border: none;
            background: transparent;
            outline: none;
            flex: 1;
            font-size: 0.875rem;
            color: var(--color-text);
            padding: 4px 0;
            min-width: 0;
        }

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

        .nav-search button {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--color-primary);
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: background var(--transition);
            flex-shrink: 0;
        }

        .nav-search button:hover {
            background: var(--color-primary-dark);
        }

        .nav-search button svg {
            width: 16px;
            height: 16px;
        }

        .mobile-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 6px;
            border-radius: var(--radius-sm);
            cursor: pointer;
            background: transparent;
            border: none;
        }

        .mobile-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--color-text);
            border-radius: 4px;
            transition: all var(--transition);
        }

        .mobile-toggle.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

        .mobile-toggle.active span:nth-child(2) {
            opacity: 0;
        }

        .mobile-toggle.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 520px;
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, #0F766E 0%, #0EA5E9 100%);
            overflow: hidden;
            padding: 80px 0 70px;
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.20;
            mix-blend-mode: overlay;
        }

        .hero-bg-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(15, 118, 110, 0.4) 0%, transparent 70%),
                radial-gradient(ellipse at 70% 50%, rgba(14, 165, 233, 0.3) 0%, transparent 70%);
            pointer-events: none;
        }

        .hero .container {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        .hero-content {
            color: var(--color-white);
        }

        .hero-content .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.20);
            padding: 6px 18px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 500;
            letter-spacing: 0.3px;
            margin-bottom: 20px;
            color: rgba(255, 255, 255, 0.95);
        }

        .hero-content .hero-badge svg {
            width: 14px;
            height: 14px;
        }

        .hero-content h1 {
            font-size: 3rem;
            font-weight: 800;
            color: var(--color-white);
            line-height: 1.2;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }

        .hero-content h1 .highlight {
            background: linear-gradient(135deg, #FDE68A, #F59E0B);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-content p {
            font-size: 1.1rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 28px;
            max-width: 520px;
        }

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

        .hero-actions .btn-primary {
            padding: 14px 36px;
            background: var(--color-white);
            color: var(--color-primary);
            font-weight: 700;
            border-radius: 50px;
            font-size: 1rem;
            transition: all var(--transition);
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
        }

        .hero-actions .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.20);
            background: #F8FAFC;
        }

        .hero-actions .btn-secondary {
            padding: 14px 36px;
            background: rgba(255, 255, 255, 0.12);
            color: var(--color-white);
            font-weight: 600;
            border-radius: 50px;
            font-size: 1rem;
            border: 1px solid rgba(255, 255, 255, 0.25);
            transition: all var(--transition);
            backdrop-filter: blur(4px);
        }

        .hero-actions .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.22);
            transform: translateY(-2px);
        }

        .hero-visual {
            display: flex;
            justify-content: center;
            align-items: center;
            position: relative;
        }

        .hero-visual .hero-card-stack {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
            width: 100%;
            max-width: 440px;
        }

        .hero-visual .hc-item {
            background: rgba(255, 255, 255, 0.10);
            backdrop-filter: blur(12px);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-md);
            padding: 20px 18px;
            color: white;
            transition: all var(--transition);
        }

        .hero-visual .hc-item:hover {
            background: rgba(255, 255, 255, 0.16);
            transform: translateY(-4px);
        }

        .hero-visual .hc-item .hc-num {
            font-size: 1.8rem;
            font-weight: 800;
            background: linear-gradient(135deg, #FDE68A, #F59E0B);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-visual .hc-item .hc-label {
            font-size: 0.85rem;
            opacity: 0.8;
            margin-top: 4px;
        }

        .hero-visual .hc-item .hc-icon {
            font-size: 1.6rem;
            margin-bottom: 8px;
            opacity: 0.9;
        }

        .hero-stats {
            display: flex;
            gap: 28px;
            margin-top: 32px;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.12);
        }

        .hero-stats .stat-item .stat-value {
            font-size: 1.5rem;
            font-weight: 800;
            color: white;
        }

        .hero-stats .stat-item .stat-label {
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.65);
        }

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

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

        .section-title {
            text-align: center;
            margin-bottom: 3rem;
        }

        .section-title h2 {
            font-size: 2rem;
            font-weight: 800;
            letter-spacing: -0.01em;
        }

        .section-title .subtitle {
            color: var(--color-text-secondary);
            font-size: 1.05rem;
            margin-top: 10px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .section-title .section-badge {
            display: inline-block;
            background: rgba(15, 118, 110, 0.08);
            color: var(--color-primary);
            padding: 4px 16px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 12px;
            text-transform: uppercase;
        }

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

        .feature-card {
            background: var(--color-bg-card);
            border-radius: var(--radius-md);
            padding: 36px 28px;
            border: 1px solid var(--color-border);
            transition: all var(--transition);
            text-align: center;
        }

        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }

        .feature-card .fc-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-sm);
            background: rgba(15, 118, 110, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            font-size: 1.6rem;
        }

        .feature-card h3 {
            font-size: 1.15rem;
            margin-bottom: 10px;
        }

        .feature-card p {
            color: var(--color-text-secondary);
            font-size: 0.925rem;
            line-height: 1.6;
        }

        /* ===== 分类卡片 ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .category-card {
            position: relative;
            border-radius: var(--radius-md);
            overflow: hidden;
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            transition: all var(--transition);
            cursor: pointer;
            display: block;
            color: var(--color-text);
        }

        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
            color: var(--color-text);
        }

        .category-card .cc-thumb {
            width: 100%;
            height: 180px;
            object-fit: cover;
            display: block;
            background: var(--color-bg-alt);
        }

        .category-card .cc-body {
            padding: 20px 22px 24px;
        }

        .category-card .cc-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 6px;
        }

        .category-card .cc-body p {
            color: var(--color-text-secondary);
            font-size: 0.875rem;
            line-height: 1.5;
            margin-bottom: 12px;
        }

        .category-card .cc-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.78rem;
            font-weight: 500;
            color: var(--color-primary);
            background: rgba(15, 118, 110, 0.08);
            padding: 4px 12px;
            border-radius: 50px;
        }

        /* ===== 最新资讯列表 ===== */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 18px;
        }

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

        .news-item:hover {
            box-shadow: var(--shadow-md);
            border-color: transparent;
            transform: translateX(4px);
        }

        .news-item .ni-thumb {
            width: 100px;
            height: 72px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
            background: var(--color-bg-alt);
        }

        .news-item .ni-body {
            flex: 1;
            min-width: 0;
        }

        .news-item .ni-body .ni-title {
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 4px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-item .ni-body .ni-title a {
            color: inherit;
        }

        .news-item .ni-body .ni-title a:hover {
            color: var(--color-primary);
        }

        .news-item .ni-body .ni-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 0.8rem;
            color: var(--color-text-muted);
        }

        .news-item .ni-body .ni-meta .ni-category {
            background: rgba(15, 118, 110, 0.08);
            color: var(--color-primary);
            padding: 2px 10px;
            border-radius: 50px;
            font-weight: 500;
        }

        .news-item .ni-body .ni-desc {
            color: var(--color-text-secondary);
            font-size: 0.875rem;
            line-height: 1.5;
            margin-top: 6px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-empty {
            text-align: center;
            padding: 48px 24px;
            color: var(--color-text-muted);
            font-size: 1rem;
            background: var(--color-bg-card);
            border-radius: var(--radius-md);
            border: 1px dashed var(--color-border);
        }

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

        .stat-card {
            background: var(--color-bg-card);
            border-radius: var(--radius-md);
            padding: 32px 20px;
            text-align: center;
            border: 1px solid var(--color-border);
            transition: all var(--transition);
        }

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

        .stat-card .sc-value {
            font-size: 2.4rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
        }

        .stat-card .sc-label {
            color: var(--color-text-secondary);
            font-size: 0.9rem;
            margin-top: 6px;
            font-weight: 500;
        }

        .stat-card .sc-icon {
            font-size: 1.8rem;
            margin-bottom: 12px;
            opacity: 0.7;
        }

        /* ===== 流程步骤 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            position: relative;
        }

        .steps-grid::before {
            content: '';
            position: absolute;
            top: 44px;
            left: 10%;
            right: 10%;
            height: 2px;
            background: linear-gradient(90deg, var(--color-primary-light), var(--color-secondary));
            opacity: 0.3;
            z-index: 0;
        }

        .step-card {
            text-align: center;
            position: relative;
            z-index: 1;
            background: var(--color-bg-card);
            border-radius: var(--radius-md);
            padding: 32px 20px 28px;
            border: 1px solid var(--color-border);
            transition: all var(--transition);
        }

        .step-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
        }

        .step-card .step-num {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--color-primary);
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.2rem;
            margin: 0 auto 16px;
            box-shadow: 0 4px 12px rgba(15, 118, 110, 0.25);
        }

        .step-card h4 {
            font-size: 1rem;
            margin-bottom: 6px;
        }

        .step-card p {
            color: var(--color-text-secondary);
            font-size: 0.85rem;
            line-height: 1.5;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

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

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

        .faq-item .faq-question {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--color-text);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            user-select: none;
            background: transparent;
            width: 100%;
            text-align: left;
            border: none;
            transition: background var(--transition);
        }

        .faq-item .faq-question:hover {
            background: rgba(15, 118, 110, 0.03);
        }

        .faq-item .faq-question .faq-icon {
            flex-shrink: 0;
            width: 20px;
            height: 20px;
            transition: transform var(--transition);
            color: var(--color-text-muted);
        }

        .faq-item.active .faq-question .faq-icon {
            transform: rotate(180deg);
            color: var(--color-primary);
        }

        .faq-item .faq-answer {
            padding: 0 24px 18px;
            color: var(--color-text-secondary);
            font-size: 0.925rem;
            line-height: 1.7;
            display: none;
        }

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

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
            padding: 68px 0;
            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;
            mix-blend-mode: overlay;
        }

        .cta-section .container {
            position: relative;
            z-index: 2;
            text-align: center;
            color: white;
        }

        .cta-section h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: white;
            margin-bottom: 12px;
        }

        .cta-section p {
            font-size: 1.05rem;
            opacity: 0.9;
            max-width: 560px;
            margin: 0 auto 28px;
        }

        .cta-section .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 44px;
            background: var(--color-white);
            color: var(--color-primary);
            font-weight: 700;
            font-size: 1.05rem;
            border-radius: 50px;
            transition: all var(--transition);
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.18);
        }

        .cta-section .cta-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(0, 0, 0, 0.25);
            background: #F8FAFC;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #0F172A;
            color: rgba(255, 255, 255, 0.7);
            padding: 48px 0 28px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-brand .fb-logo {
            font-size: 1.25rem;
            font-weight: 800;
            color: white;
            margin-bottom: 10px;
        }

        .footer-brand .fb-logo span {
            background: linear-gradient(135deg, #14B8A6, #0EA5E9);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .footer-brand p {
            font-size: 0.875rem;
            line-height: 1.6;
            max-width: 300px;
        }

        .footer-col h4 {
            color: white;
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 14px;
        }

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

        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.875rem;
            transition: color var(--transition);
        }

        .footer-col ul li a:hover {
            color: white;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 20px;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.4);
            flex-wrap: wrap;
            gap: 12px;
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }

        .footer-bottom a:hover {
            color: white;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .hero .container {
                grid-template-columns: 1fr;
                gap: 40px;
            }

            .hero-content h1 {
                font-size: 2.4rem;
            }

            .hero-visual .hero-card-stack {
                max-width: 100%;
            }

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

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

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

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

            .steps-grid::before {
                display: none;
            }

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

            .nav-search {
                width: 140px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --spacing-section: var(--spacing-section-mobile);
                --header-height: 64px;
            }

            .site-header {
                height: var(--header-height);
            }

            .main-nav {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 16px 24px 24px;
                gap: 6px;
                box-shadow: var(--shadow-lg);
                transform: translateY(-120%);
                opacity: 0;
                transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
                pointer-events: none;
                border-bottom: 1px solid var(--color-border);
            }

            .main-nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }

            .main-nav a {
                padding: 12px 16px;
                width: 100%;
                border-radius: var(--radius-sm);
                font-size: 1rem;
            }

            .nav-search {
                width: 100%;
                margin-left: 0;
                margin-top: 8px;
            }

            .mobile-toggle {
                display: flex;
            }

            .hero {
                min-height: auto;
                padding: 56px 0 50px;
            }

            .hero-content h1 {
                font-size: 2rem;
            }

            .hero-content p {
                font-size: 1rem;
            }

            .hero-stats {
                gap: 16px;
                flex-wrap: wrap;
            }

            .hero-stats .stat-item .stat-value {
                font-size: 1.2rem;
            }

            .hero-visual .hero-card-stack {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }

            .hero-visual .hc-item {
                padding: 14px 12px;
            }

            .hero-visual .hc-item .hc-num {
                font-size: 1.3rem;
            }

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

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

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }

            .stat-card {
                padding: 20px 14px;
            }

            .stat-card .sc-value {
                font-size: 1.8rem;
            }

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

            .section-title h2 {
                font-size: 1.6rem;
            }

            .news-item {
                flex-direction: column;
                padding: 16px;
            }

            .news-item .ni-thumb {
                width: 100%;
                height: 140px;
            }

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

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

            .cta-section h2 {
                font-size: 1.6rem;
            }

            .cta-section .cta-btn {
                padding: 14px 32px;
                font-size: 0.95rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .hero-content h1 {
                font-size: 1.7rem;
            }

            .hero-actions .btn-primary,
            .hero-actions .btn-secondary {
                padding: 12px 24px;
                font-size: 0.9rem;
                width: 100%;
                text-align: center;
            }

            .hero-actions {
                flex-direction: column;
            }

            .hero-visual .hero-card-stack {
                grid-template-columns: 1fr 1fr;
            }

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

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

            .feature-card {
                padding: 24px 18px;
            }

            .category-card .cc-body {
                padding: 16px 18px 20px;
            }

            .section-title h2 {
                font-size: 1.4rem;
            }
        }

        /* ===== 辅助类 ===== */
        .text-center {
            text-align: center;
        }

        .mt-2 {
            margin-top: 8px;
        }
        .mt-4 {
            margin-top: 16px;
        }
        .mt-6 {
            margin-top: 24px;
        }
        .mt-8 {
            margin-top: 32px;
        }

        .gap-2 {
            gap: 8px;
        }
        .gap-4 {
            gap: 16px;
        }

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

        /* ===== 滚动条美化 ===== */
        ::-webkit-scrollbar {
            width: 6px;
            height: 6px;
        }

        ::-webkit-scrollbar-track {
            background: var(--color-bg);
        }

        ::-webkit-scrollbar-thumb {
            background: var(--color-text-muted);
            border-radius: 12px;
        }

        ::-webkit-scrollbar-thumb:hover {
            background: var(--color-text-secondary);
        }

        /* ===== 选中样式 ===== */
        ::selection {
            background: rgba(15, 118, 110, 0.18);
            color: var(--color-text);
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
    :root {
        --primary: #2563eb;
        --primary-light: #3b82f6;
        --primary-dark: #1d4ed8;
        --primary-bg: #eff6ff;
        --secondary: #0ea5e9;
        --secondary-light: #38bdf8;
        --accent: #f59e0b;
        --accent-light: #fbbf24;
        --success: #10b981;
        --danger: #ef4444;
        --bg-body: #f8fafc;
        --bg-white: #ffffff;
        --bg-card: #ffffff;
        --bg-dark: #0f172a;
        --bg-dark-alt: #1e293b;
        --text-primary: #0f172a;
        --text-secondary: #475569;
        --text-muted: #94a3b8;
        --text-light: #f1f5f9;
        --text-white: #ffffff;
        --border-color: #e2e8f0;
        --border-light: #f1f5f9;
        --radius: 12px;
        --radius-sm: 8px;
        --radius-lg: 16px;
        --radius-xl: 20px;
        --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
        --shadow: 0 4px 12px rgba(0,0,0,0.08);
        --shadow-lg: 0 12px 32px rgba(0,0,0,0.12);
        --shadow-xl: 0 20px 48px rgba(0,0,0,0.16);
        --transition: 0.25s ease;
        --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'PingFang SC', 'Microsoft YaHei', sans-serif;
        --max-width: 1200px;
        --header-h: 64px;
        --nav-h: 48px;
    }

    /* ===== 基础 Reset ===== */
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
    body {
        font-family: var(--font-family);
        background: var(--bg-body);
        color: var(--text-primary);
        line-height: 1.6;
        font-size: 16px;
    }
    a { color: var(--primary); text-decoration: none; transition: var(--transition); }
    a:hover { color: var(--primary-dark); }
    a:focus-visible { outline: 3px solid var(--primary-light); outline-offset: 2px; border-radius: 4px; }
    img { max-width: 100%; height: auto; display: block; }
    button { cursor: pointer; font-family: inherit; border: none; background: none; transition: var(--transition); }
    button:focus-visible { outline: 3px solid var(--primary-light); outline-offset: 2px; border-radius: 4px; }
    input, textarea, select { font-family: inherit; font-size: 1rem; transition: var(--transition); }
    input:focus, textarea:focus, select:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37,99,235,0.15); }
    ul, ol { list-style: none; }
    h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text-primary); }
    h1 { font-size: 2.5rem; letter-spacing: -0.02em; }
    h2 { font-size: 2rem; letter-spacing: -0.01em; }
    h3 { font-size: 1.5rem; }
    h4 { font-size: 1.125rem; }
    p { margin-bottom: 0.75rem; color: var(--text-secondary); }
    .container { width: 100%; max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
    .section { padding: 72px 0; }
    .section-title { text-align: center; margin-bottom: 48px; }
    .section-title h2 { position: relative; display: inline-block; }
    .section-title h2::after { content: ''; display: block; width: 48px; height: 4px; background: var(--primary); border-radius: 4px; margin: 12px auto 0; }
    .section-title p { max-width: 600px; margin: 12px auto 0; font-size: 1.05rem; color: var(--text-secondary); }
    .badge { display: inline-block; padding: 4px 12px; border-radius: 999px; font-size: 0.75rem; font-weight: 600; letter-spacing: 0.02em; }
    .badge-primary { background: var(--primary-bg); color: var(--primary); }
    .badge-hot { background: #fef3c7; color: #d97706; }
    .badge-new { background: #d1fae5; color: #059669; }
    .btn {
        display: inline-flex; align-items: center; gap: 8px; padding: 12px 28px; border-radius: var(--radius-sm);
        font-weight: 600; font-size: 0.95rem; transition: var(--transition); border: 2px solid transparent;
    }
    .btn-primary { background: var(--primary); color: #fff; border-color: var(--primary); }
    .btn-primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); color: #fff; transform: translateY(-2px); box-shadow: var(--shadow); }
    .btn-outline { background: transparent; color: var(--primary); border-color: var(--primary); }
    .btn-outline:hover { background: var(--primary); color: #fff; transform: translateY(-2px); box-shadow: var(--shadow); }
    .btn-accent { background: var(--accent); color: #fff; border-color: var(--accent); }
    .btn-accent:hover { background: #d97706; border-color: #d97706; color: #fff; transform: translateY(-2px); box-shadow: var(--shadow); }
    .btn-lg { padding: 16px 36px; font-size: 1.05rem; border-radius: var(--radius); }
    .btn-sm { padding: 8px 18px; font-size: 0.85rem; }
    .text-center { text-align: center; }
    .mt-2 { margin-top: 16px; }
    .mt-3 { margin-top: 24px; }
    .mt-4 { margin-top: 32px; }
    .mb-2 { margin-bottom: 16px; }
    .mb-3 { margin-bottom: 24px; }
    .gap-2 { gap: 12px; }
    .gap-3 { gap: 20px; }
    .flex-center { display: flex; align-items: center; justify-content: center; }
    .flex-between { display: flex; align-items: center; justify-content: space-between; }
    .grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
    .grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 24px; }
    .grid-4 { display: grid; grid-template-columns: 1fr 1fr 1fr 1fr; gap: 20px; }

    /* ===== 导航 Header ===== */
    .site-header {
        position: sticky; top: 0; z-index: 1000;
        background: rgba(255,255,255,0.96); backdrop-filter: blur(12px);
        border-bottom: 1px solid var(--border-color);
        box-shadow: 0 1px 4px rgba(0,0,0,0.04);
    }
    .header-inner {
        display: flex; align-items: center; justify-content: space-between;
        height: var(--header-h); padding: 0 24px; max-width: var(--max-width); margin: 0 auto;
    }
    .logo { font-size: 1.35rem; font-weight: 800; color: var(--text-primary); letter-spacing: -0.02em; white-space: nowrap; }
    .logo span { color: var(--primary); }
    .logo:hover { color: var(--primary); }
    .main-nav {
        display: flex; align-items: center; gap: 8px; flex-wrap: nowrap;
    }
    .main-nav a {
        padding: 8px 16px; border-radius: var(--radius-sm); font-weight: 500; font-size: 0.9rem;
        color: var(--text-secondary); white-space: nowrap; transition: var(--transition);
    }
    .main-nav a:hover { background: var(--primary-bg); color: var(--primary); }
    .main-nav a.active { background: var(--primary); color: #fff; }
    .nav-search {
        display: flex; align-items: center; gap: 4px;
        background: var(--bg-body); border: 1px solid var(--border-color); border-radius: var(--radius-sm);
        padding: 4px 4px 4px 14px; margin-left: 12px; transition: var(--transition);
    }
    .nav-search:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37,99,235,0.1); }
    .nav-search input { border: none; background: transparent; padding: 6px 0; font-size: 0.85rem; min-width: 160px; color: var(--text-primary); }
    .nav-search input::placeholder { color: var(--text-muted); }
    .nav-search button {
        display: flex; align-items: center; justify-content: center;
        width: 34px; height: 34px; border-radius: var(--radius-sm); background: var(--primary); color: #fff;
    }
    .nav-search button:hover { background: var(--primary-dark); }
    .nav-search button svg { width: 16px; height: 16px; }
    .mobile-toggle { display: none; width: 40px; height: 40px; align-items: center; justify-content: center; color: var(--text-primary); font-size: 1.4rem; border-radius: var(--radius-sm); }
    .mobile-toggle:hover { background: var(--bg-body); }

    /* ===== Banner / Hero 内页 ===== */
    .page-banner {
        position: relative; padding: 80px 0 72px; background: var(--bg-dark); color: var(--text-light);
        background-image: url('/assets/images/backpic/back-2.png'); background-size: cover; background-position: center 30%; background-blend-mode: overlay;
        overflow: hidden;
    }
    .page-banner::before { content: ''; position: absolute; inset: 0; background: rgba(15,23,42,0.7); z-index: 1; }
    .page-banner .container { position: relative; z-index: 2; }
    .page-banner h1 { color: #fff; font-size: 2.75rem; margin-bottom: 12px; }
    .page-banner p { color: rgba(255,255,255,0.8); font-size: 1.1rem; max-width: 640px; }
    .page-banner .breadcrumb { display: flex; gap: 8px; font-size: 0.85rem; color: rgba(255,255,255,0.6); margin-bottom: 20px; }
    .page-banner .breadcrumb a { color: rgba(255,255,255,0.7); }
    .page-banner .breadcrumb a:hover { color: #fff; }
    .page-banner .breadcrumb span { color: rgba(255,255,255,0.9); }

    /* ===== 分类过滤标签 ===== */
    .filter-bar {
        background: var(--bg-white); border-bottom: 1px solid var(--border-color); padding: 16px 0;
        position: sticky; top: var(--header-h); z-index: 100; box-shadow: var(--shadow-sm);
    }
    .filter-bar .container { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
    .filter-label { font-weight: 600; font-size: 0.9rem; color: var(--text-secondary); margin-right: 4px; }
    .filter-tags { display: flex; gap: 8px; flex-wrap: wrap; }
    .filter-tag {
        padding: 6px 16px; border-radius: 999px; font-size: 0.82rem; font-weight: 500;
        background: var(--bg-body); color: var(--text-secondary); border: 1px solid var(--border-color); cursor: pointer;
        transition: var(--transition);
    }
    .filter-tag:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-bg); }
    .filter-tag.active { background: var(--primary); color: #fff; border-color: var(--primary); }

    /* ===== 游戏卡片 ===== */
    .game-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
    .game-card {
        background: var(--bg-card); border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border-color);
        transition: var(--transition); box-shadow: var(--shadow-sm);
    }
    .game-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
    .game-card .card-img { position: relative; aspect-ratio: 16/9; overflow: hidden; background: var(--bg-body); }
    .game-card .card-img img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
    .game-card:hover .card-img img { transform: scale(1.05); }
    .game-card .card-img .card-badges { position: absolute; top: 12px; left: 12px; display: flex; gap: 8px; }
    .game-card .card-body { padding: 20px; }
    .game-card .card-body h3 { font-size: 1.1rem; margin-bottom: 6px; }
    .game-card .card-body h3 a { color: var(--text-primary); }
    .game-card .card-body h3 a:hover { color: var(--primary); }
    .game-card .card-body .card-meta { display: flex; gap: 12px; font-size: 0.8rem; color: var(--text-muted); margin-bottom: 8px; }
    .game-card .card-body .card-meta i { margin-right: 4px; }
    .game-card .card-body p { font-size: 0.88rem; color: var(--text-secondary); margin-bottom: 12px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
    .game-card .card-foot { display: flex; align-items: center; justify-content: space-between; padding-top: 12px; border-top: 1px solid var(--border-light); }
    .game-card .card-foot .rating { color: var(--accent); font-size: 0.85rem; }
    .game-card .card-foot .download-btn { padding: 6px 16px; font-size: 0.8rem; border-radius: 999px; background: var(--primary-bg); color: var(--primary); font-weight: 600; }
    .game-card .card-foot .download-btn:hover { background: var(--primary); color: #fff; }

    /* ===== 排行榜 / 数据板块 ===== */
    .rank-section { background: var(--bg-dark); color: var(--text-light); background-image: url('/assets/images/backpic/back-3.png'); background-size: cover; background-position: center; background-blend-mode: overlay; }
    .rank-section::before { content: ''; position: absolute; inset: 0; background: rgba(15,23,42,0.8); z-index: 0; }
    .rank-section .container { position: relative; z-index: 1; }
    .rank-section .section-title h2 { color: #fff; }
    .rank-section .section-title h2::after { background: var(--accent); }
    .rank-section .section-title p { color: rgba(255,255,255,0.7); }
    .rank-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
    .rank-card {
        background: rgba(255,255,255,0.08); backdrop-filter: blur(8px); border-radius: var(--radius);
        padding: 28px 20px; text-align: center; border: 1px solid rgba(255,255,255,0.1); transition: var(--transition);
    }
    .rank-card:hover { background: rgba(255,255,255,0.14); transform: translateY(-4px); }
    .rank-card .rank-num { font-size: 2.5rem; font-weight: 800; color: var(--accent); line-height: 1; margin-bottom: 8px; }
    .rank-card h4 { color: #fff; font-size: 1.05rem; margin-bottom: 4px; }
    .rank-card p { color: rgba(255,255,255,0.6); font-size: 0.85rem; }
    .rank-card .rank-tag { display: inline-block; margin-top: 8px; padding: 2px 12px; border-radius: 999px; font-size: 0.7rem; background: rgba(255,255,255,0.12); color: rgba(255,255,255,0.7); }

    /* ===== 分类入口 ===== */
    .cat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
    .cat-card {
        background: var(--bg-card); border-radius: var(--radius); padding: 32px 20px; text-align: center;
        border: 1px solid var(--border-color); transition: var(--transition); box-shadow: var(--shadow-sm);
    }
    .cat-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--primary-light); }
    .cat-card .cat-icon { font-size: 2.5rem; color: var(--primary); margin-bottom: 12px; }
    .cat-card h4 { font-size: 1rem; margin-bottom: 6px; }
    .cat-card p { font-size: 0.85rem; color: var(--text-muted); }

    /* ===== FAQ ===== */
    .faq-list { max-width: 760px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
    .faq-item { background: var(--bg-card); border-radius: var(--radius-sm); border: 1px solid var(--border-color); overflow: hidden; transition: var(--transition); }
    .faq-item summary { padding: 18px 24px; font-weight: 600; font-size: 1rem; cursor: pointer; display: flex; align-items: center; justify-content: space-between; color: var(--text-primary); }
    .faq-item summary::-webkit-details-marker { display: none; }
    .faq-item summary::after { content: '\f078'; font-family: 'Font Awesome 6 Free'; font-weight: 900; font-size: 0.8rem; color: var(--text-muted); transition: var(--transition); }
    .faq-item[open] summary::after { transform: rotate(180deg); }
    .faq-item .faq-answer { padding: 0 24px 18px; color: var(--text-secondary); font-size: 0.92rem; line-height: 1.7; }

    /* ===== CTA ===== */
    .cta-section { background: var(--primary); color: #fff; text-align: center; padding: 64px 0; }
    .cta-section h2 { color: #fff; font-size: 2rem; margin-bottom: 12px; }
    .cta-section p { color: rgba(255,255,255,0.85); max-width: 560px; margin: 0 auto 24px; }
    .cta-section .btn { background: #fff; color: var(--primary); border-color: #fff; }
    .cta-section .btn:hover { background: var(--primary-bg); color: var(--primary-dark); transform: translateY(-2px); box-shadow: var(--shadow-lg); }

    /* ===== 页脚 ===== */
    .site-footer { background: var(--bg-dark); color: rgba(255,255,255,0.7); padding: 56px 0 0; }
    .site-footer .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 32px; padding-bottom: 32px; border-bottom: 1px solid rgba(255,255,255,0.08); }
    .site-footer .footer-brand .fb-logo { font-size: 1.3rem; font-weight: 800; color: #fff; margin-bottom: 12px; }
    .site-footer .footer-brand .fb-logo span { color: var(--primary-light); }
    .site-footer .footer-brand p { font-size: 0.88rem; color: rgba(255,255,255,0.6); max-width: 360px; }
    .site-footer .footer-col h4 { color: #fff; font-size: 0.95rem; margin-bottom: 16px; }
    .site-footer .footer-col ul li { margin-bottom: 10px; }
    .site-footer .footer-col ul li a { color: rgba(255,255,255,0.6); font-size: 0.88rem; }
    .site-footer .footer-col ul li a:hover { color: var(--primary-light); }
    .site-footer .footer-bottom { padding: 20px 0; display: flex; align-items: center; justify-content: space-between; font-size: 0.82rem; color: rgba(255,255,255,0.4); }
    .site-footer .footer-bottom a { color: rgba(255,255,255,0.5); }
    .site-footer .footer-bottom a:hover { color: var(--primary-light); }

    /* ===== 响应式 ===== */
    @media (max-width: 1024px) {
        .game-grid { grid-template-columns: repeat(2, 1fr); }
        .rank-grid { grid-template-columns: repeat(2, 1fr); }
        .cat-grid { grid-template-columns: repeat(2, 1fr); }
        .section { padding: 56px 0; }
        h1 { font-size: 2rem; }
        h2 { font-size: 1.6rem; }
        .page-banner h1 { font-size: 2rem; }
        .site-footer .footer-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
    }
    @media (max-width: 768px) {
        .header-inner { height: auto; padding: 10px 16px; flex-wrap: wrap; }
        .main-nav { order: 3; width: 100%; margin-top: 10px; overflow-x: auto; gap: 4px; padding-bottom: 4px; }
        .main-nav a { padding: 6px 12px; font-size: 0.82rem; }
        .nav-search { order: 2; margin-left: auto; }
        .nav-search input { min-width: 100px; }
        .container { padding: 0 16px; }
        .section { padding: 40px 0; }
        .page-banner { padding: 56px 0 48px; }
        .page-banner h1 { font-size: 1.6rem; }
        .game-grid { grid-template-columns: 1fr; gap: 16px; }
        .rank-grid { grid-template-columns: 1fr; gap: 12px; }
        .cat-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
        .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
        .filter-bar .container { gap: 8px; }
        .filter-tag { padding: 4px 12px; font-size: 0.75rem; }
        .site-footer .footer-grid { grid-template-columns: 1fr; gap: 20px; }
        .site-footer .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
        .section-title { margin-bottom: 28px; }
        h1 { font-size: 1.6rem; }
        h2 { font-size: 1.3rem; }
        .cta-section h2 { font-size: 1.4rem; }
    }
    @media (max-width: 520px) {
        .header-inner { flex-wrap: wrap; }
        .main-nav { width: 100%; overflow-x: auto; }
        .nav-search input { min-width: 80px; }
        .cat-grid { grid-template-columns: 1fr; }
        .rank-card { padding: 20px 16px; }
        .game-card .card-body { padding: 14px; }
        .page-banner h1 { font-size: 1.3rem; }
        .btn-lg { padding: 12px 24px; font-size: 0.9rem; }
    }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a73e8;
            --primary-dark: #1557b0;
            --primary-light: #e8f0fe;
            --secondary: #0d9488;
            --secondary-light: #ccfbf1;
            --accent: #f59e0b;
            --bg-body: #f8fafc;
            --bg-white: #ffffff;
            --bg-card: #ffffff;
            --bg-dark: #0f172a;
            --bg-dark-2: #1e293b;
            --text-primary: #0f172a;
            --text-secondary: #475569;
            --text-muted: #94a3b8;
            --text-white: #ffffff;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            --max-width: 1200px;
            --nav-height: 64px;
        }

        /* ===== 基础重置 ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--primary-dark); }
        a:focus-visible { outline: 3px solid var(--primary); outline-offset: 2px; border-radius: 2px; }
        img { max-width: 100%; height: auto; display: block; }
        button { cursor: pointer; font-family: inherit; border: none; background: none; }
        input, textarea { font-family: inherit; font-size: 1rem; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text-primary); }

        /* ===== 容器 ===== */
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 1px 4px rgba(0,0,0,0.04);
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            gap: 24px;
        }
        .logo {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--text-primary);
            white-space: nowrap;
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .logo i { color: var(--primary); font-size: 1.5rem; }
        .logo span { background: linear-gradient(135deg, var(--primary), var(--secondary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex: 1;
            justify-content: center;
        }
        .main-nav a {
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition);
            position: relative;
            white-space: nowrap;
        }
        .main-nav a:hover { color: var(--primary); background: var(--primary-light); }
        .main-nav a.active { color: var(--primary); background: var(--primary-light); font-weight: 600; }
        .main-nav a.active::after { display: none; }
        .nav-search {
            display: flex;
            align-items: center;
            background: var(--border-light);
            border-radius: 24px;
            padding: 0 4px 0 16px;
            border: 1px solid transparent;
            transition: all var(--transition);
            min-width: 200px;
        }
        .nav-search:focus-within { border-color: var(--primary); background: var(--bg-white); box-shadow: 0 0 0 3px rgba(26,115,232,0.15); }
        .nav-search input {
            border: none;
            background: transparent;
            padding: 8px 0;
            font-size: 0.875rem;
            color: var(--text-primary);
            width: 100%;
            outline: none;
        }
        .nav-search input::placeholder { color: var(--text-muted); }
        .nav-search button {
            padding: 8px 12px;
            color: var(--text-muted);
            transition: color var(--transition);
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .nav-search button:hover { color: var(--primary); }
        .nav-search button svg { width: 18px; height: 18px; }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            background: none;
            border: none;
            cursor: pointer;
        }
        .nav-toggle span {
            display: block;
            width: 24px;
            height: 2.5px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: all var(--transition);
        }

        /* ===== 页面横幅 ===== */
        .page-banner {
            background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-dark-2) 100%);
            padding: 60px 0 50px;
            position: relative;
            overflow: hidden;
            min-height: 220px;
            display: flex;
            align-items: center;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.12;
            z-index: 0;
        }
        .page-banner .container { position: relative; z-index: 1; }
        .page-banner h1 {
            font-size: 2rem;
            color: var(--text-white);
            margin-bottom: 8px;
            line-height: 1.3;
            max-width: 800px;
        }
        .page-banner .meta-line {
            display: flex;
            flex-wrap: wrap;
            gap: 16px 24px;
            color: rgba(255,255,255,0.7);
            font-size: 0.9rem;
            align-items: center;
        }
        .page-banner .meta-line i { margin-right: 6px; }
        .page-banner .meta-line .badge {
            display: inline-block;
            padding: 2px 14px;
            border-radius: 12px;
            background: var(--primary);
            color: #fff;
            font-size: 0.8rem;
            font-weight: 500;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.5);
            margin-bottom: 16px;
        }
        .breadcrumb a { color: rgba(255,255,255,0.7); }
        .breadcrumb a:hover { color: #fff; }
        .breadcrumb span { color: rgba(255,255,255,0.4); }

        /* ===== 文章主体 ===== */
        .article-main {
            padding: 48px 0 64px;
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
        }
        .article-body {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 40px 44px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
        }
        .article-body .content {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text-primary);
        }
        .article-body .content p { margin-bottom: 1.4em; }
        .article-body .content h2, .article-body .content h3 { margin-top: 1.8em; margin-bottom: 0.6em; }
        .article-body .content h2 { font-size: 1.5rem; }
        .article-body .content h3 { font-size: 1.25rem; }
        .article-body .content ul, .article-body .content ol { margin-bottom: 1.4em; padding-left: 1.5em; }
        .article-body .content li { margin-bottom: 0.4em; list-style: disc; }
        .article-body .content img { border-radius: var(--radius-sm); margin: 1.2em 0; }
        .article-body .content blockquote {
            border-left: 4px solid var(--primary);
            padding: 12px 20px;
            background: var(--primary-light);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 1.2em 0;
            color: var(--text-secondary);
        }
        .article-body .content a { color: var(--primary); font-weight: 500; text-decoration: underline; }
        .article-body .content a:hover { color: var(--primary-dark); }
        .article-body .content code {
            background: var(--border-light);
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.9em;
            color: var(--primary-dark);
        }
        .article-not-found {
            text-align: center;
            padding: 80px 20px;
        }
        .article-not-found i { font-size: 3rem; color: var(--text-muted); margin-bottom: 24px; }
        .article-not-found h2 { font-size: 1.5rem; margin-bottom: 12px; }
        .article-not-found p { color: var(--text-secondary); margin-bottom: 24px; }
        .article-not-found .btn { display: inline-block; }

        /* ===== 侧边栏 ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }
        .sidebar-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
        }
        .sidebar-card h3 {
            font-size: 1.05rem;
            margin-bottom: 16px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--primary-light);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card h3 i { color: var(--primary); }
        .sidebar-list li {
            padding: 10px 0;
            border-bottom: 1px solid var(--border-light);
        }
        .sidebar-list li:last-child { border-bottom: none; }
        .sidebar-list a {
            display: flex;
            gap: 12px;
            align-items: flex-start;
            color: var(--text-primary);
            transition: all var(--transition);
        }
        .sidebar-list a:hover { color: var(--primary); }
        .sidebar-list .thumb {
            width: 64px;
            height: 48px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
            background: var(--border-light);
        }
        .sidebar-list .info { flex: 1; min-width: 0; }
        .sidebar-list .info .tit {
            font-size: 0.9rem;
            font-weight: 500;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            line-height: 1.4;
        }
        .sidebar-list .info .time {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-top: 4px;
        }
        .sidebar-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .sidebar-tags a {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 16px;
            background: var(--border-light);
            color: var(--text-secondary);
            font-size: 0.8rem;
            font-weight: 500;
            transition: all var(--transition);
        }
        .sidebar-tags a:hover { background: var(--primary-light); color: var(--primary); }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 28px;
            border-radius: 24px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition);
            border: 2px solid transparent;
            cursor: pointer;
            text-decoration: none;
            line-height: 1.4;
        }
        .btn-primary { background: var(--primary); color: #fff; border-color: var(--primary); }
        .btn-primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 6px 20px rgba(26,115,232,0.35); }
        .btn-secondary { background: transparent; color: var(--primary); border-color: var(--primary); }
        .btn-secondary:hover { background: var(--primary); color: #fff; transform: translateY(-2px); box-shadow: 0 6px 20px rgba(26,115,232,0.25); }
        .btn-sm { padding: 6px 18px; font-size: 0.85rem; }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.8);
            padding: 56px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        .footer-brand .fb-logo { font-size: 1.3rem; font-weight: 800; color: #fff; margin-bottom: 12px; }
        .footer-brand .fb-logo span { background: linear-gradient(135deg, #60a5fa, #34d399); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .footer-brand p { font-size: 0.9rem; line-height: 1.7; color: rgba(255,255,255,0.6); max-width: 360px; }
        .footer-col h4 { color: #fff; font-size: 1rem; font-weight: 600; margin-bottom: 16px; }
        .footer-col ul { display: flex; flex-direction: column; gap: 10px; }
        .footer-col a { color: rgba(255,255,255,0.6); font-size: 0.9rem; transition: all var(--transition); }
        .footer-col a:hover { color: #60a5fa; padding-left: 4px; }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            padding: 20px 0;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.4);
        }
        .footer-bottom a { color: rgba(255,255,255,0.4); }
        .footer-bottom a:hover { color: #60a5fa; }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .article-layout { grid-template-columns: 1fr; }
            .article-sidebar { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
        }
        @media (max-width: 768px) {
            .header-inner { padding: 0 16px; }
            .main-nav { display: none; position: absolute; top: var(--nav-height); left: 0; right: 0; background: var(--bg-white); flex-direction: column; padding: 16px 24px; gap: 4px; border-bottom: 1px solid var(--border); box-shadow: var(--shadow-md); }
            .main-nav.open { display: flex; }
            .main-nav a { padding: 10px 16px; border-radius: var(--radius-sm); width: 100%; }
            .nav-search { min-width: 0; flex: 1; max-width: 200px; }
            .nav-toggle { display: flex; }
            .page-banner { padding: 40px 0 36px; min-height: 180px; }
            .page-banner h1 { font-size: 1.5rem; }
            .article-body { padding: 24px 20px; }
            .article-sidebar { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .container { padding: 0 16px; }
        }
        @media (max-width: 520px) {
            .page-banner h1 { font-size: 1.25rem; }
            .page-banner .meta-line { font-size: 0.8rem; gap: 10px; }
            .article-body { padding: 20px 16px; }
            .article-body .content { font-size: 1rem; }
            .nav-search { display: none; }
            .header-inner { gap: 12px; }
        }

        /* ===== 工具类 ===== */
        .text-center { text-align: center; }
        .mt-8 { margin-top: 8px; }
        .mt-16 { margin-top: 16px; }
        .mt-24 { margin-top: 24px; }
        .mb-16 { margin-bottom: 16px; }
        .mb-24 { margin-bottom: 24px; }
        .gap-8 { gap: 8px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }