/* roulang page: index */
:root {
            --km-primary: #1e3a8a;
            --km-primary-hover: #172554;
            --km-secondary: #0284c7;
            --km-accent: #f59e0b;
            --km-bg-main: #f8fafc;
            --km-bg-card: #ffffff;
            --km-bg-dark: #0f172a;
            --km-text-main: #0f172a;
            --km-text-muted: #64748b;
            --km-border: #e2e8f0;
            --km-radius-sm: 8px;
            --km-radius-md: 14px;
            --km-radius-lg: 20px;
            --km-shadow-sm: 0 2px 4px rgba(0,0,0,0.03);
            --km-shadow-md: 0 8px 24px rgba(15, 23, 42, 0.06);
            --km-shadow-lg: 0 16px 32px rgba(15, 23, 42, 0.1);
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            background-color: var(--km-bg-main);
            color: var(--km-text-main);
            line-height: 1.65;
            -webkit-font-smoothing: antialiased;
        }

        /* 顶部导航 */
        .km-navbar {
            background-color: #ffffff;
            border-bottom: 1px solid var(--km-border);
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1030;
            box-shadow: 0 1px 3px rgba(0,0,0,0.04);
        }
        .km-brand {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--km-primary);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .km-brand i {
            color: var(--km-secondary);
        }
        .km-nav-link {
            color: #334155;
            font-weight: 500;
            padding: 0.5rem 1rem !important;
            transition: color 0.2s ease;
        }
        .km-nav-link:hover, .km-nav-link.active {
            color: var(--km-primary) !important;
            font-weight: 600;
        }

        /* 模块基础 */
        .km-section {
            padding: 5rem 0;
            position: relative;
        }
        .km-section-alt {
            background-color: #ffffff;
        }
        .km-section-dark {
            background-color: var(--km-bg-dark);
            color: #ffffff;
        }
        .km-title-wrap {
            max-width: 760px;
            margin: 0 auto 3rem auto;
            text-align: center;
        }
        .km-section-title {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 1rem;
            color: var(--km-text-main);
        }
        .km-section-dark .km-section-title {
            color: #ffffff;
        }
        .km-section-desc {
            font-size: 1.05rem;
            color: var(--km-text-muted);
            line-height: 1.8;
        }
        .km-section-dark .km-section-desc {
            color: #94a3b8;
        }

        /* 卡片与组件 */
        .km-card {
            background: var(--km-bg-card);
            border-radius: var(--km-radius-md);
            border: 1px solid var(--km-border);
            padding: 2rem;
            box-shadow: var(--km-shadow-sm);
            transition: transform 0.25s ease, box-shadow 0.25s ease;
            height: 100%;
        }
        .km-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--km-shadow-md);
            border-color: #cbd5e1;
        }
        .km-icon-box {
            width: 52px;
            height: 52px;
            border-radius: var(--km-radius-sm);
            background: #eff6ff;
            color: var(--km-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: 1.25rem;
        }
        .km-badge {
            display: inline-block;
            padding: 0.35rem 0.85rem;
            font-size: 0.85rem;
            font-weight: 600;
            border-radius: 50px;
            background-color: #e0f2fe;
            color: var(--km-secondary);
            margin-bottom: 1rem;
        }

        /* 按钮 */
        .btn-km-primary {
            background-color: var(--km-primary);
            color: #ffffff;
            font-weight: 600;
            padding: 0.75rem 1.75rem;
            border-radius: var(--km-radius-sm);
            border: none;
            transition: background 0.2s ease, transform 0.15s ease;
        }
        .btn-km-primary:hover {
            background-color: var(--km-primary-hover);
            color: #ffffff;
            transform: translateY(-1px);
        }
        .btn-km-outline {
            background-color: transparent;
            color: var(--km-primary);
            font-weight: 600;
            padding: 0.75rem 1.75rem;
            border-radius: var(--km-radius-sm);
            border: 1.5px solid var(--km-primary);
            transition: all 0.2s ease;
        }
        .btn-km-outline:hover {
            background-color: #eff6ff;
            color: var(--km-primary-hover);
        }

        /* 专属版式定制样式 */
        .km-hero {
            background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
            color: #ffffff;
            padding: 5rem 0 4.5rem;
        }
        .km-region-tag {
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.2);
            padding: 0.4rem 1rem;
            border-radius: 50px;
            font-size: 0.875rem;
            color: #cbd5e1;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            margin-bottom: 1.5rem;
        }
        .km-catalog-item {
            display: flex;
            align-items: flex-start;
            padding: 1.25rem;
            background: #ffffff;
            border: 1px solid var(--km-border);
            border-radius: var(--km-radius-sm);
            margin-bottom: 1rem;
            transition: border-color 0.2s;
        }
        .km-catalog-item:hover {
            border-color: var(--km-secondary);
        }
        .km-stat-num {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--km-primary);
            line-height: 1;
            margin-bottom: 0.5rem;
        }
        .km-chart-box {
            background: #ffffff;
            border: 1px solid var(--km-border);
            border-radius: var(--km-radius-md);
            padding: 1.5rem;
        }
        .km-chart-bar {
            height: 8px;
            background: #e2e8f0;
            border-radius: 4px;
            overflow: hidden;
            margin-top: 0.5rem;
        }
        .km-chart-fill {
            height: 100%;
            background: var(--km-secondary);
            border-radius: 4px;
        }
        .km-resource-card {
            border-left: 4px solid var(--km-secondary);
        }

        /* 页脚 */
        .km-footer {
            background-color: var(--km-bg-dark);
            color: #94a3b8;
            padding: 4.5rem 0 2rem;
            font-size: 0.95rem;
            border-top: 1px solid #334155;
        }
        .km-footer-title {
            color: #ffffff;
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 1.5rem;
        }
        .km-footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .km-footer-links li {
            margin-bottom: 0.75rem;
        }
        .km-footer-links a {
            color: #94a3b8;
            text-decoration: none;
            transition: color 0.2s;
        }
        .km-footer-links a:hover {
            color: #ffffff;
        }
        .km-footer-bottom {
            margin-top: 3.5rem;
            padding-top: 1.5rem;
            border-top: 1px solid #1e293b;
            text-align: center;
            font-size: 0.85rem;
        }

        @media (max-width: 991.98px) {
            .km-section { padding: 3.5rem 0; }
            .km-section-title { font-size: 1.75rem; }
        }

/* roulang page: category1 */
:root {
            --km-primary: #1e3a8a;
            --km-primary-hover: #172554;
            --km-secondary: #0284c7;
            --km-accent: #f59e0b;
            --km-bg-main: #f8fafc;
            --km-bg-card: #ffffff;
            --km-bg-dark: #0f172a;
            --km-text-main: #0f172a;
            --km-text-muted: #64748b;
            --km-border: #e2e8f0;
            --km-radius-sm: 8px;
            --km-radius-md: 14px;
            --km-radius-lg: 20px;
            --km-shadow-sm: 0 2px 4px rgba(0,0,0,0.03);
            --km-shadow-md: 0 8px 24px rgba(15, 23, 42, 0.06);
            --km-shadow-lg: 0 16px 32px rgba(15, 23, 42, 0.1);
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            background-color: var(--km-bg-main);
            color: var(--km-text-main);
            line-height: 1.65;
            -webkit-font-smoothing: antialiased;
        }
        /* 顶部导航 */
        .km-navbar {
            background-color: #ffffff;
            border-bottom: 1px solid var(--km-border);
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1030;
            box-shadow: 0 1px 3px rgba(0,0,0,0.04);
        }
        .km-brand {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--km-primary);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .km-brand i {
            color: var(--km-secondary);
        }
        .km-nav-link {
            color: #334155;
            font-weight: 500;
            padding: 0.5rem 1rem !important;
            transition: color 0.2s ease;
        }
        .km-nav-link:hover, .km-nav-link.active {
            color: var(--km-primary) !important;
            font-weight: 600;
        }
        /* 模块基础 */
        .km-section {
            padding: 5rem 0;
            position: relative;
        }
        .km-section-alt {
            background-color: #ffffff;
        }
        .km-section-dark {
            background-color: var(--km-bg-dark);
            color: #ffffff;
        }
        .km-title-wrap {
            max-width: 760px;
            margin: 0 auto 3rem auto;
            text-align: center;
        }
        .km-section-title {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 1rem;
            color: var(--km-text-main);
        }
        .km-section-dark .km-section-title {
            color: #ffffff;
        }
        .km-section-desc {
            font-size: 1.05rem;
            color: var(--km-text-muted);
            line-height: 1.8;
        }
        .km-section-dark .km-section-desc {
            color: #94a3b8;
        }
        /* 卡片与组件 */
        .km-card {
            background: var(--km-bg-card);
            border-radius: var(--km-radius-md);
            border: 1px solid var(--km-border);
            padding: 2rem;
            box-shadow: var(--km-shadow-sm);
            transition: transform 0.25s ease, box-shadow 0.25s ease;
            height: 100%;
        }
        .km-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--km-shadow-md);
            border-color: #cbd5e1;
        }
        .km-badge {
            display: inline-block;
            padding: 0.35rem 0.85rem;
            font-size: 0.85rem;
            font-weight: 600;
            border-radius: 50px;
            background-color: #e0f2fe;
            color: var(--km-secondary);
            margin-bottom: 1rem;
        }
        /* 按钮 */
        .btn-km-primary {
            background-color: var(--km-primary);
            color: #ffffff;
            font-weight: 600;
            padding: 0.75rem 1.75rem;
            border-radius: var(--km-radius-sm);
            border: none;
            transition: background 0.2s ease, transform 0.15s ease;
            text-decoration: none;
            display: inline-block;
        }
        .btn-km-primary:hover {
            background-color: var(--km-primary-hover);
            color: #ffffff;
            transform: translateY(-1px);
        }
        .btn-km-outline {
            background-color: transparent;
            color: var(--km-primary);
            font-weight: 600;
            padding: 0.75rem 1.75rem;
            border-radius: var(--km-radius-sm);
            border: 1.5px solid var(--km-primary);
            transition: all 0.2s ease;
            text-decoration: none;
            display: inline-block;
        }
        .btn-km-outline:hover {
            background-color: #eff6ff;
            color: var(--km-primary-hover);
        }
        /* Hero 路线图蓝图定制 */
        .km-roadmap-hero {
            background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
            color: #ffffff;
            padding: 4.5rem 0 4rem;
        }
        .km-node-bar {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--km-radius-md);
            padding: 1.25rem 1.5rem;
            gap: 1.5rem;
            overflow-x: auto;
        }
        .km-node-item {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            white-space: nowrap;
        }
        .km-node-dot {
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: #22c55e;
            box-shadow: 0 0 10px rgba(34, 197, 94, 0.6);
        }
        .km-node-dot.upcoming {
            background: #38bdf8;
            box-shadow: 0 0 10px rgba(56, 189, 248, 0.6);
        }
        /* 架构特征网格 */
        .km-feature-row {
            border-bottom: 1px solid var(--km-border);
            padding: 2rem 0;
        }
        .km-feature-row:last-child {
            border-bottom: none;
        }
        .km-icon-box {
            width: 52px;
            height: 52px;
            border-radius: var(--km-radius-sm);
            background: #e0f2fe;
            color: var(--km-secondary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: 1.25rem;
        }
        .km-metric-box {
            background: #f1f5f9;
            border-radius: var(--km-radius-sm);
            padding: 1.5rem;
            text-align: center;
            border: 1px solid #e2e8f0;
        }
        .km-metric-num {
            font-size: 2.25rem;
            font-weight: 800;
            color: var(--km-primary);
            line-height: 1.1;
        }
        .km-metric-label {
            color: var(--km-text-muted);
            font-size: 0.9rem;
            margin-top: 0.5rem;
        }
        /* 页脚 */
        .km-footer {
            background-color: var(--km-bg-dark);
            color: #94a3b8;
            padding: 4.5rem 0 2rem;
            font-size: 0.95rem;
            border-top: 1px solid #334155;
        }
        .km-footer-title {
            color: #ffffff;
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 1.5rem;
        }
        .km-footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .km-footer-links li {
            margin-bottom: 0.75rem;
        }
        .km-footer-links a {
            color: #94a3b8;
            text-decoration: none;
            transition: color 0.2s;
        }
        .km-footer-links a:hover {
            color: #ffffff;
        }
        .km-footer-bottom {
            margin-top: 3.5rem;
            padding-top: 2rem;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            text-align: center;
            font-size: 0.875rem;
            color: #64748b;
        }