:root {
            --rh3o-primary: #188fff;
            --rh3o-primary-dark: #004a80;
            --rh3o-accent: #00d4ff;
            --rh3o-bg: #f4f7fa;
            --rh3o-text: #2d3436;
            --rh3o-text-light: #636e72;
            --rh3o-white: #ffffff;
            --rh3o-card-shadow: 0 10px 30px rgba(0,0,0,0.05);
            --rh3o-transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
        }

        * {
            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);
            color: var(--rh3o-text);
            line-height: 1.7;
            word-break: keep-all;
        }

        /* 布局容器 */
        .rh3o-container {
            max-width: 1100px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* 导航栏 */
        .rh3o-header {
            position: fixed;
            top: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid rgba(0,0,0,0.05);
            transition: var(--rh3o-transition);
        }

        .rh3o-nav-inner {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            height: 80px;
            min-width: 0;
        }

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

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

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

        .rh3o-menu-item a {
            text-decoration: none;
            color: var(--rh3o-text);
            font-weight: 500;
            font-size: 0.95rem;
            padding: 8px 12px;
            border-radius: 6px;
            transition: var(--rh3o-transition);
            word-break: keep-all;
        }

        .rh3o-menu-item a:hover {
            color: var(--rh3o-primary);
            background: rgba(24, 143, 255, 0.05);
        }

        .rh3o-menu-item a.active {
            color: var(--rh3o-white);
            background: var(--rh3o-primary);
        }

        /* Hero 区块 */
        .rh3o-hero {
            padding: 160px 0 80px;
            background: linear-gradient(135deg, #004a80 0%, #188fff 100%);
            color: var(--rh3o-white);
            text-align: center;
            clip-path: polygon(0 0, 100% 0, 100% 85%, 0% 100%);
        }

        .rh3o-hero-content {
            max-width: 800px;
            margin: 0 auto;
            word-break: break-word;
        }

        .rh3o-hero-title {
            font-size: clamp(2rem, 5vw, 3.5rem);
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 24px;
        }

        .rh3o-hero-subtitle {
            font-size: clamp(1rem, 2vw + 0.5rem, 1.25rem);
            opacity: 0.9;
            margin-bottom: 40px;
        }

        /* 核心内容区 */
        .rh3o-main-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 32px;
            margin: -60px auto 80px;
            position: relative;
            z-index: 10;
        }

        .rh3o-version-card {
            background: var(--rh3o-white);
            border-radius: 16px;
            padding: 32px;
            box-shadow: var(--rh3o-card-shadow);
            transition: var(--rh3o-transition);
            display: flex;
            flex-direction: column;
            min-width: 0;
            border: 1px solid rgba(0,0,0,0.03);
        }

        .rh3o-version-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 20px 40px rgba(0,0,0,0.1);
        }

        .rh3o-version-badge {
            display: inline-block;
            background: var(--rh3o-primary-dark);
            color: white;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 0.8rem;
            margin-bottom: 16px;
            width: fit-content;
        }

        .rh3o-version-title {
            font-size: 1.5rem;
            margin-bottom: 12px;
            color: var(--rh3o-primary-dark);
        }

        .rh3o-version-desc {
            color: var(--rh3o-text-light);
            font-size: 0.95rem;
            margin-bottom: 24px;
            flex-grow: 1;
        }

        .rh3o-download-group {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            min-width: 0;
        }

        .rh3o-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 20px;
            border-radius: 8px;
            text-decoration: none;
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--rh3o-transition);
            min-width: 0;
        }

        .rh3o-btn-primary {
            background: var(--rh3o-primary);
            color: white;
        }

        .rh3o-btn-primary:hover {
            background: var(--rh3o-primary-dark);
        }

        .rh3o-btn-outline {
            border: 2px solid var(--rh3o-primary);
            color: var(--rh3o-primary);
        }

        .rh3o-btn-outline:hover {
            background: var(--rh3o-primary);
            color: white;
        }

        /* 行业部署矩阵 Section */
        .rh3o-section {
            padding: 80px 0;
        }

        .rh3o-section-title {
            text-align: center;
            font-size: 2rem;
            margin-bottom: 48px;
            color: var(--rh3o-primary-dark);
        }

        .rh3o-matrix-container {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            min-width: 0;
        }

        .rh3o-matrix-item {
            flex: 1;
            min-width: 300px;
            background: var(--rh3o-white);
            padding: 32px;
            border-radius: 12px;
            border-left: 5px solid var(--rh3o-accent);
            box-shadow: var(--rh3o-card-shadow);
        }

        .rh3o-matrix-sector {
            font-weight: 800;
            color: var(--rh3o-primary);
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 8px;
            display: block;
        }

        .rh3o-matrix-case {
            font-size: 1.25rem;
            margin-bottom: 16px;
            display: block;
        }

        .rh3o-matrix-strategy {
            font-size: 0.95rem;
            color: var(--rh3o-text-light);
            margin-bottom: 16px;
        }

        .rh3o-matrix-tool {
            font-weight: 600;
            font-size: 0.9rem;
            padding: 4px 12px;
            background: #e1f5fe;
            border-radius: 4px;
            color: #01579b;
        }

        /* 底部 */
        .rh3o-footer {
            background: #1a1a1a;
            color: #e0e0e0;
            padding: 64px 0 32px;
            margin-top: 80px;
        }

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

        .rh3o-footer-brand {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--rh3o-white);
            margin-bottom: 16px;
        }

        .rh3o-footer-text {
            font-size: 0.9rem;
            line-height: 1.8;
            opacity: 0.7;
        }

        .rh3o-footer-copy {
            text-align: center;
            padding-top: 32px;
            border-top: 1px solid rgba(255,255,255,0.1);
            font-size: 0.85rem;
            opacity: 0.5;
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .rh3o-nav-inner {
                height: auto;
                padding: 16px 0;
                flex-direction: column;
            }
            .rh3o-menu {
                justify-content: center;
                margin-top: 16px;
            }
            .rh3o-hero {
                padding: 140px 0 60px;
            }
            .rh3o-main-grid {
                grid-template-columns: 1fr;
            }
        }