:root {
            --rh3o-primary: #1880c4;
            --rh3o-primary-dark: #0e5a8a;
            --rh3o-accent: #ff9800;
            --rh3o-bg-light: #f4f7f9;
            --rh3o-text-main: #2c3e50;
            --rh3o-text-muted: #5a6c7d;
            --rh3o-white: #ffffff;
            --rh3o-shadow: 0 10px 30px rgba(0,0,0,0.08);
            --rh3o-radius: 12px;
        }

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

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

        /* 布局容器 */
        .rh3o-container {
            max-width: 1100px;
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        /* 导航栏 */
        .rh3o-header {
            position: fixed;
            top: 0;
            width: 100%;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            z-index: 1000;
            box-shadow: 0 2px 15px rgba(0,0,0,0.05);
            border-bottom: 1px solid rgba(0,0,0,0.05);
        }

        .rh3o-nav-wrapper {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            height: auto;
            min-height: 72px;
            padding: 8px 0;
        }

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

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

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

        .rh3o-menu li {
            min-width: 0;
        }

        .rh3o-menu a {
            text-decoration: none;
            color: var(--rh3o-text-main);
            font-weight: 500;
            font-size: 0.95rem;
            padding: 8px 4px;
            transition: color 0.3s;
            position: relative;
        }

        .rh3o-menu a:hover, .rh3o-menu a.active {
            color: var(--rh3o-primary);
        }

        .rh3o-menu a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--rh3o-primary);
        }

        /* Hero 区块 - 独特非对称布局 */
        .rh3o-hero {
            padding: 160px 0 80px;
            background: linear-gradient(135deg, #ffffff 0%, #e9f2f9 100%);
            position: relative;
            overflow: hidden;
        }

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

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

        .rh3o-hero-badge {
            display: inline-block;
            background: rgba(24, 128, 196, 0.1);
            color: var(--rh3o-primary);
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 700;
            margin-bottom: 16px;
            text-transform: uppercase;
        }

        .rh3o-hero h1 {
            font-size: clamp(2rem, 4vw + 1rem, 3.5rem);
            line-height: 1.2;
            margin-bottom: 24px;
            color: var(--rh3o-primary-dark);
        }

        .rh3o-hero p {
            font-size: clamp(1rem, 1vw + 0.5rem, 1.25rem);
            color: var(--rh3o-text-muted);
            margin-bottom: 32px;
            max-width: 600px;
        }

        .rh3o-hero-visual {
            flex: 1;
            min-width: 320px;
            display: flex;
            justify-content: center;
            position: relative;
        }

        .rh3o-export-card {
            background: var(--rh3o-white);
            padding: 32px;
            border-radius: var(--rh3o-radius);
            box-shadow: var(--rh3o-shadow);
            border-left: 6px solid var(--rh3o-primary);
            width: 100%;
            max-width: 450px;
        }

        /* 核心流程区块 */
        .rh3o-section {
            padding: 96px 0;
        }

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

        .rh3o-section-title h2 {
            font-size: clamp(1.5rem, 3vw, 2.5rem);
            margin-bottom: 16px;
        }

        .rh3o-workflow {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 32px;
        }

        .rh3o-step-item {
            background: var(--rh3o-white);
            padding: 40px;
            border-radius: var(--rh3o-radius);
            transition: transform 0.3s ease;
            position: relative;
            min-width: 0;
            word-break: break-word;
        }

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

        .rh3o-step-num {
            font-size: 3rem;
            font-weight: 800;
            color: rgba(24, 128, 196, 0.1);
            position: absolute;
            top: 20px;
            right: 30px;
        }

        .rh3o-step-item h3 {
            margin-bottom: 16px;
            color: var(--rh3o-primary);
        }

        /* 行业部署矩阵 */
        .rh3o-matrix-bg {
            background-color: #1a2a3a;
            color: #ffffff;
        }

        .rh3o-matrix-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
        }

        .rh3o-matrix-card {
            flex: 1;
            min-width: 300px;
            background: rgba(255,255,255,0.05);
            border: 1px solid rgba(255,255,255,0.1);
            padding: 32px;
            border-radius: var(--rh3o-radius);
            transition: background 0.3s;
        }

        .rh3o-matrix-card:hover {
            background: rgba(255,255,255,0.08);
        }

        .rh3o-sector-tag {
            color: var(--rh3o-accent);
            font-weight: 700;
            font-size: 0.9rem;
            margin-bottom: 12px;
            display: block;
        }

        .rh3o-key-tool {
            margin-top: 24px;
            padding-top: 16px;
            border-top: 1px dashed rgba(255,255,255,0.2);
            font-size: 0.9rem;
            color: #a0aec0;
        }

        .rh3o-key-tool strong {
            color: #fff;
        }

        /* 页脚 */
        .rh3o-footer {
            background: #f8fafc;
            padding: 80px 0 40px;
            border-top: 1px solid #e2e8f0;
        }

        .rh3o-footer-grid {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 40px;
            margin-bottom: 48px;
        }

        .rh3o-footer-brand {
            flex: 1;
            min-width: 250px;
        }

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

        .rh3o-footer-links {
            flex: 2;
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            min-width: 0;
        }

        .rh3o-footer-col {
            flex: 1;
            min-width: 140px;
        }

        .rh3o-footer-col h4 {
            margin-bottom: 20px;
            font-size: 1rem;
        }

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

        .rh3o-footer-col li {
            margin-bottom: 10px;
        }

        .rh3o-footer-col a {
            text-decoration: none;
            color: var(--rh3o-text-muted);
            font-size: 0.9rem;
            transition: color 0.3s;
        }

        .rh3o-footer-col a:hover {
            color: var(--rh3o-primary);
        }

        .rh3o-copyright {
            text-align: center;
            padding-top: 40px;
            border-top: 1px solid #e2e8f0;
            color: var(--rh3o-text-muted);
            font-size: 0.85rem;
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .rh3o-nav-wrapper {
                flex-direction: column;
                padding: 16px 0;
            }
            .rh3o-menu {
                justify-content: center;
                margin-top: 16px;
            }
            .rh3o-hero {
                padding: 120px 0 60px;
                text-align: center;
            }
            .rh3o-hero-text, .rh3o-hero-visual {
                flex: 0 0 100%;
            }
            .rh3o-hero p {
                margin-left: auto;
                margin-right: auto;
            }
        }

        /* 动画交互 */
        .rh3o-btn {
            display: inline-block;
            padding: 14px 32px;
            background: var(--rh3o-primary);
            color: #fff;
            text-decoration: none;
            border-radius: 8px;
            font-weight: 600;
            transition: all 0.3s;
            border: none;
            cursor: pointer;
        }

        .rh3o-btn:hover {
            background: var(--rh3o-primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(24, 128, 196, 0.3);
        }