:root {
            --hjuo-primary: #1a73e8;
            --hjuo-accent: #34a853;
            --hjuo-dark: #202124;
            --hjuo-light: #f8f9fa;
            --hjuo-text: #3c4043;
            --hjuo-bg-gradient: linear-gradient(135deg, #f0f4f8 0%, #d9e2ec 100%);
            --hjuo-glass: rgba(255, 255, 255, 0.8);
            --hjuo-spacing-unit: 8px;
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
            color: var(--hjuo-text);
            line-height: 1.6;
            background: #ffffff;
            overflow-x: hidden;
        }

        /* 导航系统 */
        .hjuo-navbar {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: var(--hjuo-glass);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid rgba(0,0,0,0.05);
            transition: all 0.3s ease;
        }

        .hjuo-nav-container {
            max-width: 1100px;
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            height: 72px;
        }

        .hjuo-logo {
            display: flex;
            align-items: center;
            min-width: 0;
        }

        .hjuo-logo img {
            height: 32px;
            width: auto;
        }

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

        .hjuo-nav-links a {
            text-decoration: none;
            color: var(--hjuo-text);
            font-weight: 500;
            font-size: 14px;
            padding: 8px 12px;
            border-radius: 6px;
            transition: all 0.2s;
            word-break: keep-all;
        }

        .hjuo-nav-links a:hover {
            background: rgba(26, 115, 232, 0.1);
            color: var(--hjuo-primary);
        }

        .hjuo-nav-links a.active {
            color: var(--hjuo-primary);
            background: rgba(26, 115, 232, 0.05);
            box-shadow: inset 0 -2px 0 var(--hjuo-primary);
        }

        /* 容器定义 */
        .hjuo-main-container {
            max-width: 1100px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Hero 区块 - 独特居中卡片布局 */
        .hjuo-hero {
            padding: 160px 0 96px;
            background: radial-gradient(circle at top right, #e8f0fe 0%, #ffffff 50%);
            text-align: center;
            position: relative;
            overflow: hidden;
        }

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

        .hjuo-hero-badge {
            display: inline-block;
            padding: 4px 16px;
            background: rgba(26, 115, 232, 0.1);
            color: var(--hjuo-primary);
            border-radius: 20px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 24px;
        }

        .hjuo-hero h1 {
            font-size: clamp(2.5rem, 5vw + 1rem, 4rem);
            line-height: 1.1;
            font-weight: 800;
            color: var(--hjuo-dark);
            margin-bottom: 24px;
            word-break: keep-all;
        }

        .hjuo-hero p {
            font-size: clamp(1.1rem, 1vw + 0.8rem, 1.4rem);
            color: #5f6368;
            margin-bottom: 40px;
            line-height: 1.6;
        }

        .hjuo-cta-group {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
            min-width: 0;
        }

        .hjuo-btn-primary {
            background: var(--hjuo-primary);
            color: white;
            padding: 16px 32px;
            border-radius: 30px;
            text-decoration: none;
            font-weight: 600;
            transition: transform 0.2s, box-shadow 0.2s;
            box-shadow: 0 4px 14px rgba(26, 115, 232, 0.4);
        }

        .hjuo-btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(26, 115, 232, 0.5);
        }

        /* 核心技术网格 */
        .hjuo-engine-section {
            padding: 96px 0;
            background: #ffffff;
        }

        .hjuo-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 32px;
        }

        .hjuo-feature-card {
            padding: 48px;
            border-radius: 24px;
            background: var(--hjuo-light);
            border: 1px solid rgba(0,0,0,0.03);
            transition: all 0.3s;
            min-width: 0;
            word-break: break-word;
        }

        .hjuo-feature-card:hover {
            transform: translateY(-8px);
            background: #ffffff;
            box-shadow: 0 20px 40px rgba(0,0,0,0.05);
        }

        .hjuo-icon-box {
            font-size: 32px;
            margin-bottom: 24px;
        }

        .hjuo-feature-card h3 {
            font-size: 24px;
            margin-bottom: 16px;
            color: var(--hjuo-dark);
        }

        .hjuo-tech-tag {
            font-size: 12px;
            text-transform: uppercase;
            color: var(--hjuo-primary);
            letter-spacing: 1px;
            font-weight: 700;
            margin-bottom: 8px;
            display: block;
        }

        /* 自动填充动态演示区 - 独特交互设计 */
        .hjuo-flow-section {
            padding: 96px 0;
            background: #000;
            color: white;
            border-radius: 40px;
            margin: 48px 24px;
        }

        .hjuo-flow-container {
            max-width: 900px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .hjuo-step-item {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            margin-bottom: 64px;
            align-items: center;
            min-width: 0;
        }

        .hjuo-step-number {
            font-size: 80px;
            font-weight: 900;
            opacity: 0.2;
            line-height: 1;
            flex: 0 0 100px;
        }

        .hjuo-step-content {
            flex: 1;
            min-width: 280px;
        }

        .hjuo-step-content h4 {
            font-size: 28px;
            margin-bottom: 16px;
            color: var(--hjuo-primary);
        }

        /* 动态内容区块 */
        .hjuo-news-section {
            padding: 96px 0;
        }

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

        .hjuo-section-header h2 {
            font-size: 36px;
            margin-bottom: 16px;
        }

        /* 页脚 */
        .hjuo-footer {
            background: var(--hjuo-dark);
            color: #bdc1c6;
            padding: 80px 0 40px;
            margin-top: 96px;
        }

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

        .hjuo-footer-brand h2 {
            color: white;
            font-size: 24px;
            margin-bottom: 16px;
        }

        .hjuo-footer-links h4 {
            color: white;
            margin-bottom: 24px;
            font-size: 16px;
        }

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

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

        .hjuo-footer-links a {
            color: #bdc1c6;
            text-decoration: none;
            transition: color 0.2s;
        }

        .hjuo-footer-links a:hover {
            color: white;
        }

        .hjuo-copyright {
            text-align: center;
            padding-top: 40px;
            border-top: 1px solid rgba(255,255,255,0.1);
            font-size: 14px;
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .hjuo-nav-links {
                display: none; /* 简化演示：移动端可隐藏或转为汉堡菜单 */
            }
            .hjuo-nav-container {
                justify-content: center;
            }
            .hjuo-hero {
                padding: 120px 0 64px;
            }
            .hjuo-flow-section {
                margin: 24px 12px;
                border-radius: 24px;
            }
            .hjuo-step-item {
                text-align: center;
                justify-content: center;
            }
            .hjuo-step-number {
                flex: 0 0 100%;
            }
        }