/* 变量定义 - 采用 VirtualBox 官方蓝色调 */
        :root {
            --rh3o-primary: #1880C4;
            --rh3o-primary-dark: #003366;
            --rh3o-accent: #00FFCC;
            --rh3o-bg-light: #F8FAFC;
            --rh3o-text-main: #1E293B;
            --rh3o-text-muted: #64748B;
            --rh3o-white: #FFFFFF;
            --rh3o-shadow: 0 10px 30px rgba(0, 51, 102, 0.08);
            --rh3o-border-radius: 16px;
            --rh3o-max-width: 1400px;
        }

        /* 基础重置 */
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
            background-color: var(--rh3o-bg-light);
            color: var(--rh3o-text-main);
            line-height: 1.7;
            overflow-x: hidden;
            word-break: keep-all;
        }

        /* 排版系统 */
        h1, h2, h3 {
            line-height: 1.3;
            font-weight: 800;
            word-break: keep-all;
            white-space: normal;
        }

        p {
            font-size: clamp(1rem, 0.5vw + 0.8rem, 1.125rem);
            margin-bottom: 1.5rem;
            word-break: break-word;
            overflow-wrap: break-word;
        }

        /* 布局容器 */
        .rh3o-container {
            max-width: var(--rh3o-max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* 导航栏 */
        .rh3o-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(0, 0, 0, 0.05);
            transition: all 0.3s ease;
        }

        .rh3o-nav-container {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            height: 80px;
        }

        .rh3o-logo {
            flex-shrink: 0;
            min-width: 0;
        }

        .rh3o-logo img {
            height: 40px;
            width: auto;
            display: block;
        }

        .rh3o-nav-menu {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 16px;
            min-width: 0;
        }

        .rh3o-nav-item a {
            text-decoration: none;
            color: var(--rh3o-text-main);
            font-weight: 600;
            font-size: 0.95rem;
            padding: 8px 12px;
            border-radius: 8px;
            transition: all 0.2s ease;
        }

        .rh3o-nav-item a:hover {
            color: var(--rh3o-primary);
            background: rgba(24, 128, 196, 0.05);
        }

        .rh3o-nav-item a.rh3o-active {
            color: var(--rh3o-primary);
            background: rgba(24, 128, 196, 0.1);
        }

        /* Hero 区域 - 非对称设计 */
        .rh3o-hero {
            padding-top: 160px;
            padding-bottom: 96px;
            background: radial-gradient(circle at top right, #EBF4FF, #F8FAFC);
            position: relative;
            overflow: hidden;
        }

        .rh3o-hero::before {
            content: "";
            position: absolute;
            top: -10%;
            right: -5%;
            width: 40%;
            height: 60%;
            background: linear-gradient(135deg, rgba(24, 128, 196, 0.05) 0%, transparent 100%);
            transform: skewY(-10deg);
            z-index: 0;
        }

        .rh3o-hero-content {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            position: relative;
            z-index: 1;
        }

        .rh3o-hero-text {
            flex: 1;
            min-width: 320px;
        }

        .rh3o-hero-badge {
            display: inline-block;
            background: var(--rh3o-primary);
            color: white;
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 700;
            margin-bottom: 24px;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .rh3o-hero-title {
            font-size: clamp(2.5rem, 5vw + 1rem, 4.5rem);
            color: var(--rh3o-primary-dark);
            margin-bottom: 24px;
        }

        .rh3o-hero-subtitle {
            color: var(--rh3o-text-muted);
            max-width: 600px;
            font-size: clamp(1.1rem, 1vw + 0.8rem, 1.35rem);
        }

        /* 配置矩阵区域 (Industry Deployment Matrix) */
        .rh3o-matrix-section {
            padding: 96px 0;
            background-color: var(--rh3o-white);
        }

        .rh3o-section-header {
            text-align: center;
            margin-bottom: 64px;
        }

        .rh3o-section-title {
            font-size: clamp(2rem, 3vw + 0.5rem, 3rem);
            margin-bottom: 16px;
            color: var(--rh3o-primary-dark);
        }

        .rh3o-matrix-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 32px;
        }

        .rh3o-matrix-card {
            background: var(--rh3o-bg-light);
            border: 1px solid rgba(0, 0, 0, 0.03);
            border-radius: var(--rh3o-border-radius);
            padding: 40px;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            display: flex;
            flex-direction: column;
            min-width: 0;
        }

        .rh3o-matrix-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--rh3o-shadow);
        }

        .rh3o-card-tag {
            color: var(--rh3o-primary);
            font-weight: 700;
            font-size: 0.9rem;
            margin-bottom: 16px;
            display: block;
        }

        .rh3o-card-title {
            font-size: 1.5rem;
            margin-bottom: 20px;
            color: var(--rh3o-primary-dark);
        }

        .rh3o-card-desc {
            color: var(--rh3o-text-muted);
            font-size: 1rem;
            margin-bottom: 24px;
            flex-grow: 1;
        }

        .rh3o-card-footer {
            border-top: 1px solid rgba(0, 0, 0, 0.05);
            padding-top: 20px;
            font-size: 0.9rem;
            font-weight: 600;
        }

        .rh3o-tool-badge {
            background: #E2E8F0;
            padding: 4px 12px;
            border-radius: 4px;
            color: var(--rh3o-primary-dark);
        }

        /* 动态内容区块 - 文章列表 */
        .rh3o-dynamic-section {
            padding: 96px 0;
            background-color: #F1F5F9;
        }

        .rh3o-feature-split {
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
            align-items: center;
        }

        .rh3o-feature-text {
            flex: 1;
            min-width: 320px;
        }

        .rh3o-feature-visual {
            flex: 1;
            min-width: 320px;
            background: var(--rh3o-primary-dark);
            border-radius: var(--rh3o-border-radius);
            min-height: 400px;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            overflow: hidden;
        }

        /* 模拟代码/终端视觉 */
        .rh3o-terminal {
            width: 80%;
            background: #0F172A;
            border-radius: 8px;
            padding: 24px;
            box-shadow: 0 20px 50px rgba(0,0,0,0.3);
            font-family: 'Courier New', monospace;
            color: var(--rh3o-accent);
            font-size: 0.85rem;
        }

        .rh3o-terminal-line {
            margin-bottom: 8px;
            white-space: pre-wrap;
        }

        /* 页脚 */
        .rh3o-footer {
            background: var(--rh3o-primary-dark);
            color: var(--rh3o-white);
            padding: 80px 0 40px;
        }

        .rh3o-footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 48px;
            margin-bottom: 64px;
        }

        .rh3o-footer-brand h2 {
            font-size: 1.5rem;
            margin-bottom: 24px;
            color: var(--rh3o-white);
        }

        .rh3o-footer-links h4 {
            font-size: 1.1rem;
            margin-bottom: 24px;
            color: var(--rh3o-accent);
        }

        .rh3o-footer-links ul {
            list-style: none;
        }

        .rh3o-footer-links li {
            margin-bottom: 12px;
        }

        .rh3o-footer-links a {
            color: rgba(255, 255, 255, 0.7);
            text-decoration: none;
            transition: color 0.2s;
        }

        .rh3o-footer-links a:hover {
            color: var(--rh3o-white);
        }

        .rh3o-copyright {
            padding-top: 40px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            text-align: center;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.5);
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .rh3o-nav-menu {
                display: none; /* 在实际项目中通常会改为汉堡菜单 */
            }
            .rh3o-hero {
                padding-top: 120px;
                text-align: center;
            }
            .rh3o-hero-subtitle {
                margin: 0 auto 24px;
            }
            .rh3o-matrix-grid {
                grid-template-columns: 1fr;
            }
            .rh3o-feature-split {
                flex-direction: column;
            }
        }