:root {
            --hjuo-primary: #4285F4;
            --hjuo-success: #34A853;
            --hjuo-warning: #FBBC05;
            --hjuo-danger: #EA4335;
            --hjuo-text: #202124;
            --hjuo-text-light: #5f6368;
            --hjuo-bg: #ffffff;
            --hjuo-section-bg: #f8f9fa;
            --hjuo-gap: 8px;
            --hjuo-container-width: 1320px;
            --hjuo-radius: 20px;
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            color: var(--hjuo-text);
            background-color: var(--hjuo-bg);
            line-height: 1.6;
            overflow-x: hidden;
            word-break: keep-all;
        }

        .hjuo-container {
            max-width: var(--hjuo-container-width);
            margin: 0 auto;
            padding: 0 calc(var(--hjuo-gap) * 3);
        }

        /* 导航栏设计 - 毛玻璃浮动效果 */
        .hjuo-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            padding: calc(var(--hjuo-gap) * 2) 0;
            transition: all 0.3s ease;
        }

        .hjuo-header.hjuo-scrolled {
            background: rgba(255, 255, 255, 0.8);
            backdrop-filter: blur(10px);
            box-shadow: 0 4px 20px rgba(0,0,0,0.05);
            padding: calc(var(--hjuo-gap) * 1.5) 0;
        }

        .hjuo-nav-wrapper {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            min-width: 0;
        }

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

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

        .hjuo-nav-menu {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: calc(var(--hjuo-gap) * 3);
            min-width: 0;
        }

        .hjuo-nav-menu li {
            min-width: 0;
        }

        .hjuo-nav-menu a {
            text-decoration: none;
            color: var(--hjuo-text-light);
            font-weight: 500;
            font-size: 15px;
            transition: color 0.3s;
            position: relative;
            padding: 4px 0;
        }

        .hjuo-nav-menu a:hover {
            color: var(--hjuo-primary);
        }

        .hjuo-nav-menu a.hjuo-active {
            color: var(--hjuo-primary);
        }

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

        /* Hero 区 - 非对称圆环视觉 */
        .hjuo-hero {
            padding-top: 160px;
            padding-bottom: 96px;
            background: radial-gradient(circle at 90% 10%, rgba(66, 133, 244, 0.05) 0%, transparent 40%),
                        radial-gradient(circle at 10% 90%, rgba(52, 168, 83, 0.05) 0%, transparent 40%);
            position: relative;
            overflow: hidden;
        }

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

        .hjuo-hero-text {
            flex: 1 1 500px;
            min-width: 0;
            word-break: break-word;
        }

        .hjuo-hero-visual {
            flex: 1 1 400px;
            min-width: 0;
            position: relative;
            display: flex;
            justify-content: center;
            align-items: center;
        }

        .hjuo-hero-title {
            font-size: clamp(2.5rem, 5vw + 1rem, 4rem);
            line-height: 1.1;
            margin-bottom: 24px;
            font-weight: 800;
            color: var(--hjuo-text);
            letter-spacing: -1px;
        }

        .hjuo-hero-subtitle {
            font-size: clamp(1.1rem, 1vw + 0.5rem, 1.35rem);
            color: var(--hjuo-text-light);
            margin-bottom: 48px;
            max-width: 600px;
            line-height: 1.6;
        }

        .hjuo-sync-badge {
            display: inline-flex;
            align-items: center;
            background: rgba(66, 133, 244, 0.1);
            color: var(--hjuo-primary);
            padding: 8px 16px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 14px;
            margin-bottom: 24px;
        }

        .hjuo-btn-group {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }

        .hjuo-btn-primary {
            background: var(--hjuo-primary);
            color: white;
            padding: 18px 40px;
            border-radius: 12px;
            text-decoration: none;
            font-weight: 600;
            transition: transform 0.3s, box-shadow 0.3s;
            box-shadow: 0 10px 20px rgba(66, 133, 244, 0.2);
        }

        .hjuo-btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 15px 30px rgba(66, 133, 244, 0.3);
        }

        /* 核心架构区 - Bento Grid */
        .hjuo-section-tech {
            padding: 96px 0;
            background: #fff;
        }

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

        .hjuo-section-title h2 {
            font-size: clamp(2rem, 3vw, 2.5rem);
            margin-bottom: 16px;
        }

        .hjuo-tech-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 32px;
        }

        .hjuo-tech-card {
            background: var(--hjuo-section-bg);
            padding: 40px;
            border-radius: var(--hjuo-radius);
            transition: all 0.3s ease;
            border: 1px solid transparent;
            min-width: 0;
        }

        .hjuo-tech-card:hover {
            background: #fff;
            border-color: var(--hjuo-primary);
            box-shadow: 0 20px 40px rgba(0,0,0,0.05);
            transform: translateY(-5px);
        }

        .hjuo-tech-name {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .hjuo-tech-logic {
            font-size: 16px;
            color: var(--hjuo-text-light);
            margin-bottom: 24px;
        }

        .hjuo-tech-detail {
            background: #fff;
            padding: 16px;
            border-radius: 12px;
            font-size: 14px;
            border-left: 4px solid var(--hjuo-primary);
        }

        /* 交互流程区 - 步进设计 */
        .hjuo-section-flow {
            padding: 96px 0;
            background: var(--hjuo-text);
            color: #fff;
            border-radius: 60px 60px 0 0;
        }

        .hjuo-flow-container {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            justify-content: space-between;
        }

        .hjuo-flow-item {
            flex: 1 1 300px;
            min-width: 0;
            padding: 32px;
            position: relative;
        }

        .hjuo-flow-step {
            font-size: 64px;
            font-weight: 900;
            opacity: 0.1;
            line-height: 1;
            margin-bottom: -30px;
        }

        .hjuo-flow-title {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--hjuo-primary);
        }

        .hjuo-flow-desc {
            color: #a8a8a8;
            font-size: 16px;
        }

        /* 页脚设计 */
        .hjuo-footer {
            padding: 80px 0 40px;
            background: var(--hjuo-section-bg);
            border-top: 1px solid #eee;
        }

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

        .hjuo-footer-brand {
            grid-column: span 2;
        }

        .hjuo-footer-brand-name {
            font-size: 24px;
            font-weight: 800;
            color: var(--hjuo-text);
            margin-bottom: 16px;
            display: block;
        }

        .hjuo-footer-link-group h4 {
            margin-bottom: 24px;
            font-size: 16px;
        }

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

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

        .hjuo-footer-link-group a {
            text-decoration: none;
            color: var(--hjuo-text-light);
            font-size: 14px;
            transition: color 0.3s;
        }

        .hjuo-footer-link-group a:hover {
            color: var(--hjuo-primary);
        }

        .hjuo-copyright {
            text-align: center;
            padding-top: 40px;
            border-top: 1px solid #eee;
            color: #999;
            font-size: 13px;
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .hjuo-nav-menu {
                display: none; /* 简化移动端展示 */
            }
            .hjuo-hero {
                padding-top: 120px;
            }
            .hjuo-footer-brand {
                grid-column: span 1;
            }
            .hjuo-hero-title {
                font-size: 2.5rem;
            }
        }

        /* 装饰元素 */
        .hjuo-orb {
            width: 400px;
            height: 400px;
            background: conic-gradient(from 0deg, var(--hjuo-primary), var(--hjuo-success), var(--hjuo-warning), var(--hjuo-danger), var(--hjuo-primary));
            border-radius: 50%;
            filter: blur(80px);
            opacity: 0.15;
            position: absolute;
            animation: rotate 20s linear infinite;
        }

        @keyframes rotate {
            from { transform: rotate(0deg); }
            to { transform: rotate(360deg); }
        }