/* roulang page: index */
:root {
            --bg-main: #0D1117;
            --bg-secondary: #161B22;
            --bg-tertiary: #21262D;
            --bg-code: #090C10;
            --primary: #00E5FF;
            --primary-hover: #33EBFF;
            --accent: #7C3AED;
            --accent-light: #9061F9;
            --text-title: #F0F6FC;
            --text-body: #C9D1D9;
            --text-muted: #8B949E;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-highlight: rgba(0, 229, 255, 0.3);
            --glow-primary: 0 0 24px rgba(0, 229, 255, 0.2);
            --glow-card: 0 12px 32px -4px rgba(0, 229, 255, 0.12);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --container-max: 1240px;
            --transition-smooth: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
            background-color: var(--bg-main);
            color: var(--text-body);
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }

        body {
            overflow-x: hidden;
            background-color: var(--bg-main);
        }

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

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

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

        /* 顶部信任条与吸顶导航 */
        .top-trust-bar {
            background: #080B0F;
            border-bottom: 1px solid var(--border-subtle);
            font-size: 12px;
            color: var(--text-muted);
            padding: 6px 0;
        }

        .top-trust-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .trust-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .trust-dot {
            width: 6px;
            height: 6px;
            background: #10B981;
            border-radius: 50%;
            box-shadow: 0 0 8px #10B981;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(13, 17, 23, 0.88);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-subtle);
        }

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

        .site-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 18px;
            font-weight: 700;
            color: var(--text-title);
            letter-spacing: -0.02em;
        }

        .logo-mark {
            width: 34px;
            height: 34px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #0D1117;
            font-weight: 900;
            font-size: 18px;
            box-shadow: var(--glow-primary);
        }

        .nav-menu {
            display: flex;
            align-items: center;
            list-style: none;
            gap: 28px;
        }

        .nav-menu a {
            font-size: 14px;
            color: var(--text-body);
            font-weight: 500;
        }

        .nav-menu a:hover,
        .nav-menu a.active {
            color: var(--primary);
        }

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

        /* 按钮与徽章 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 20px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition-smooth);
            border: 1px solid transparent;
        }

        .btn-primary {
            background: var(--primary);
            color: #0D1117;
            box-shadow: 0 4px 14px rgba(0, 229, 255, 0.35);
        }

        .btn-primary:hover {
            background: var(--primary-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0, 229, 255, 0.5);
        }

        .btn-outline {
            background: rgba(255, 255, 255, 0.03);
            border-color: var(--border-subtle);
            color: var(--text-title);
        }

        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(0, 229, 255, 0.05);
        }

        .badge {
            display: inline-block;
            padding: 4px 10px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.05em;
            text-transform: uppercase;
        }

        .badge-cyan {
            background: rgba(0, 229, 255, 0.1);
            color: var(--primary);
            border: 1px solid rgba(0, 229, 255, 0.25);
        }

        .badge-purple {
            background: rgba(124, 58, 237, 0.15);
            color: #A78BFA;
            border: 1px solid rgba(124, 58, 237, 0.3);
        }

        /* 通用板块排版 */
        .section-padding {
            padding: 96px 0;
            border-bottom: 1px solid var(--border-subtle);
            position: relative;
        }

        .section-header {
            margin-bottom: 56px;
        }

        .section-header.text-center {
            text-align: center;
            max-width: 800px;
            margin-left: auto;
            margin-right: auto;
        }

        .section-title {
            font-size: 32px;
            font-weight: 800;
            color: var(--text-title);
            margin: 12px 0 16px;
            letter-spacing: -0.02em;
            line-height: 1.3;
        }

        .section-desc {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* 卡片与网格 */
        .grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
        .grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
        .grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }

        .card-panel {
            background: var(--bg-secondary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 28px;
            transition: var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }

        .card-panel:hover {
            border-color: var(--border-highlight);
            transform: translateY(-4px);
            box-shadow: var(--glow-card);
        }

        /* 1. Hero 开发者/API 样式 */
        .hero-section {
            padding: 72px 0 96px;
            background: radial-gradient(circle at 80% 20%, rgba(124, 58, 237, 0.15), transparent 45%),
                        radial-gradient(circle at 20% 80%, rgba(0, 229, 255, 0.08), transparent 45%),
                        var(--bg-main);
            border-bottom: 1px solid var(--border-subtle);
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1.15fr 0.85fr;
            gap: 40px;
            align-items: center;
        }

        .hero-h1 {
            font-size: 42px;
            font-weight: 800;
            color: var(--text-title);
            line-height: 1.25;
            margin: 16px 0 20px;
        }

        .hero-intro {
            font-size: 16px;
            color: var(--text-body);
            line-height: 1.8;
            margin-bottom: 32px;
        }

        .hero-cta-box {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-bottom: 28px;
        }

        .code-window {
            background: var(--bg-code);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
        }

        .code-header {
            background: #12161E;
            padding: 10px 16px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-bottom: 1px solid var(--border-subtle);
        }

        .window-dots {
            display: flex;
            gap: 6px;
        }

        .dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
        }

        .dot-red { background: #FF5F56; }
        .dot-yellow { background: #FFBD2E; }
        .dot-green { background: #27C93F; }

        .code-lang {
            font-size: 12px;
            color: var(--text-muted);
            font-family: monospace;
        }

        .code-body {
            padding: 20px;
            font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
            font-size: 13px;
            line-height: 1.6;
            color: #79C0FF;
            overflow-x: auto;
        }

        .code-body .token-kw { color: #FF7B72; }
        .code-body .token-fn { color: #D2A8FF; }
        .code-body .token-str { color: #A5D6FF; }
        .code-body .token-comment { color: #8B949E; }

        /* 2. 分类入口墙 */
        .category-item {
            background: var(--bg-secondary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 24px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            min-height: 200px;
        }

        .cat-icon {
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            background: rgba(0, 229, 255, 0.08);
            border: 1px solid rgba(0, 229, 255, 0.2);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 16px;
        }

        .category-item h3 {
            font-size: 18px;
            color: var(--text-title);
            margin-bottom: 8px;
        }

        .category-item p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 16px;
        }

        .cat-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        /* 3. 精选推荐（大图+技术参数） */
        .featured-wrapper {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 32px;
            background: var(--bg-secondary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            overflow: hidden;
        }

        .featured-img-box {
            position: relative;
            min-height: 380px;
        }

        .featured-img-box img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .featured-content {
            padding: 40px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .feature-specs {
            margin: 24px 0;
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .feature-specs li {
            font-size: 14px;
            color: var(--text-body);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .feature-specs li::before {
            content: "✓";
            color: var(--primary);
            font-weight: bold;
        }

        /* 4. 资讯与技术前沿 (1+3 布局) */
        .news-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }

        .news-main-card {
            background: var(--bg-secondary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
            display: flex;
            flex-direction: column;
        }

        .news-main-card img {
            height: 220px;
            object-fit: cover;
            width: 100%;
        }

        .news-main-body {
            padding: 24px;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .news-list-side {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .news-item-row {
            background: var(--bg-secondary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 16px;
            display: grid;
            grid-template-columns: 110px 1fr;
            gap: 16px;
            align-items: center;
            transition: var(--transition-smooth);
        }

        .news-item-row:hover {
            border-color: var(--border-highlight);
            transform: translateX(4px);
        }

        .news-thumb {
            width: 110px;
            height: 75px;
            border-radius: var(--radius-sm);
            object-fit: cover;
        }

        .news-item-row h4 {
            font-size: 15px;
            color: var(--text-title);
            margin-bottom: 6px;
            line-height: 1.4;
        }

        .news-item-row p {
            font-size: 12px;
            color: var(--text-muted);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        /* 5. 性能与吞吐排行榜 */
        .rank-table {
            width: 100%;
            border-collapse: collapse;
            background: var(--bg-secondary);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-subtle);
        }

        .rank-table th, .rank-table td {
            padding: 18px 24px;
            text-align: left;
            border-bottom: 1px solid var(--border-subtle);
            font-size: 14px;
        }

        .rank-table th {
            background: #11151C;
            color: var(--text-title);
            font-weight: 600;
        }

        .rank-table tr:last-child td {
            border-bottom: none;
        }

        .rank-table tr:hover td {
            background: rgba(255, 255, 255, 0.02);
        }

        .rank-pos {
            font-weight: 800;
            color: var(--primary);
            font-size: 16px;
        }

        /* 6. 成功案例与落地数据对比 */
        .case-card {
            background: var(--bg-secondary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 32px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .case-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 20px;
        }

        .case-metric-box {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
            margin: 24px 0;
            padding: 16px;
            background: var(--bg-tertiary);
            border-radius: var(--radius-sm);
        }

        .case-num {
            font-size: 26px;
            font-weight: 800;
            color: var(--primary);
        }

        .case-label {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* 7. 合作伙伴生态卡片 */
        .partner-grid {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: 16px;
        }

        .partner-item {
            background: var(--bg-secondary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-sm);
            padding: 20px;
            text-align: center;
            font-size: 13px;
            font-weight: 600;
            color: var(--text-muted);
            transition: var(--transition-smooth);
        }

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

        /* 8. 研发保障条 */
        .guarantee-band {
            background: linear-gradient(90deg, #161B22, #21262D);
            border: 1px solid var(--border-highlight);
            border-radius: var(--radius-md);
            padding: 32px;
        }

        .guarantee-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .guarantee-item {
            display: flex;
            align-items: flex-start;
            gap: 14px;
        }

        .guar-icon {
            font-size: 22px;
            color: var(--primary);
        }

        .guar-title {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-title);
            margin-bottom: 4px;
        }

        .guar-desc {
            font-size: 12px;
            color: var(--text-muted);
            line-height: 1.5;
        }

        /* 9. 剧情/文案内容编排专题 */
        .story-flow-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            align-items: center;
        }

        /* 10. 工业化热重载管线 */
        .pipeline-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }

        .step-box {
            background: var(--bg-secondary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 24px;
            position: relative;
        }

        .step-index {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--accent);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            font-weight: 700;
            margin-bottom: 16px;
        }

        /* 11. 开发者体验与技术口碑 */
        .review-card {
            background: var(--bg-secondary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 28px;
        }

        .review-text {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 20px;
            font-style: italic;
        }

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

        .author-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--bg-tertiary);
            border: 1px solid var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-weight: 700;
        }

        .author-name {
            font-size: 14px;
            font-weight: 700;
            color: var(--text-title);
        }

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

        /* 12. 统一收口 CTA 表单 */
        .cta-box-container {
            background: radial-gradient(circle at 50% 50%, rgba(0, 229, 255, 0.1), transparent 60%), #161B22;
            border: 1px solid var(--border-highlight);
            border-radius: var(--radius-lg);
            padding: 60px 40px;
            text-align: center;
            box-shadow: 0 0 40px rgba(0, 229, 255, 0.08);
        }

        .cta-form {
            max-width: 560px;
            margin: 32px auto 0;
            display: flex;
            gap: 12px;
        }

        .cta-input {
            flex-grow: 1;
            background: var(--bg-code);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-sm);
            padding: 12px 18px;
            color: #fff;
            font-size: 14px;
            outline: none;
            transition: var(--transition-smooth);
        }

        .cta-input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 10px rgba(0, 229, 255, 0.3);
        }

        /* 页脚 */
        .site-footer {
            background: #080B0F;
            border-top: 1px solid var(--border-subtle);
            padding: 64px 0 32px;
            font-size: 13px;
            color: var(--text-muted);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 48px;
        }

        .footer-col h4 {
            font-size: 15px;
            color: var(--text-title);
            margin-bottom: 18px;
            font-weight: 700;
        }

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

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

        .footer-bottom {
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
        }

        /* 响应式断点 */
        @media (max-width: 1024px) {
            .hero-grid, .featured-wrapper, .story-flow-grid {
                grid-template-columns: 1fr;
            }
            .grid-4, .pipeline-steps, .guarantee-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .partner-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .nav-menu, .top-trust-bar {
                display: none;
            }
            .grid-2, .grid-3, .news-grid, .case-metric-box {
                grid-template-columns: 1fr;
            }
            .news-item-row {
                grid-template-columns: 80px 1fr;
            }
            .cta-form {
                flex-direction: column;
            }
            .section-title {
                font-size: 26px;
            }
            .hero-h1 {
                font-size: 30px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }