:root {
            --hjuo-primary: #4285F4;
            --hjuo-success: #34A853;
            --hjuo-warning: #FBBC05;
            --hjuo-danger: #EA4335;
            --hjuo-dark: #202124;
            --hjuo-light: #F8F9FA;
            --hjuo-glass: rgba(255, 255, 255, 0.8);
            --hjuo-spacing-unit: 8px;
            --hjuo-container-width: 1300px;
        }

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

        body {
            font-family: "Inter", "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: #fff;
            color: var(--hjuo-dark);
            line-height: 1.6;
            overflow-x: hidden;
            word-break: keep-all;
        }

        /* 导航系统 */
        .hjuo-navbar {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 72px;
            background: var(--hjuo-glass);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(0,0,0,0.05);
            z-index: 1000;
            display: flex;
            align-items: center;
        }

        .hjuo-nav-container {
            width: 100%;
            max-width: var(--hjuo-container-width);
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }

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

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

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

        .hjuo-nav-item a {
            text-decoration: none;
            color: #5f6368;
            font-size: 15px;
            font-weight: 500;
            padding: 8px 12px;
            border-radius: 6px;
            transition: all 0.3s ease;
            white-space: nowrap;
        }

        .hjuo-nav-item a:hover {
            color: var(--hjuo-primary);
            background: rgba(66, 133, 244, 0.08);
        }

        .hjuo-nav-item.active a {
            color: var(--hjuo-primary);
            background: rgba(66, 133, 244, 0.12);
            font-weight: 700;
        }

        /* Hero 视觉区 - 独特不对称布局 */
        .hjuo-hero-section {
            padding-top: 140px;
            padding-bottom: 80px;
            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%);
        }

        .hjuo-hero-grid {
            max-width: var(--hjuo-container-width);
            margin: 0 auto;
            padding: 0 24px;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 48px;
            align-items: center;
        }

        .hjuo-hero-content {
            min-width: 0;
            word-break: break-word;
        }

        .hjuo-badge {
            display: inline-block;
            padding: 6px 16px;
            background: var(--hjuo-primary);
            color: white;
            border-radius: 100px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 24px;
        }

        .hjuo-hero-title {
            font-size: clamp(2.5rem, 5vw, 4rem);
            line-height: 1.1;
            font-weight: 800;
            color: #202124;
            margin-bottom: 24px;
            letter-spacing: -0.02em;
        }

        .hjuo-hero-subtitle {
            font-size: clamp(1.1rem, 2vw, 1.4rem);
            color: #5f6368;
            max-width: 600px;
            margin-bottom: 40px;
        }

        /* 核心安全仪表盘 */
        .hjuo-security-viz {
            position: relative;
            min-height: 400px;
            background: #fff;
            border-radius: 32px;
            box-shadow: 0 24px 48px rgba(0,0,0,0.06);
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            border: 1px solid rgba(0,0,0,0.03);
            overflow: hidden;
            transition: transform 0.4s ease;
        }
        
        .hjuo-security-viz:hover {
            transform: translateY(-8px);
        }

        .hjuo-shield-core {
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background: conic-gradient(from 0deg, var(--hjuo-primary), var(--hjuo-success), var(--hjuo-warning), var(--hjuo-primary));
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            margin-bottom: 32px;
        }

        .hjuo-shield-inner {
            width: 150px;
            height: 150px;
            background: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 48px;
            font-weight: 800;
            color: var(--hjuo-primary);
        }

        /* 引擎技术展示 */
        .hjuo-engine-section {
            padding: 96px 0;
            background: var(--hjuo-light);
        }

        .hjuo-section-header {
            max-width: var(--hjuo-container-width);
            margin: 0 auto 64px auto;
            padding: 0 24px;
            text-align: center;
        }

        .hjuo-grid-engine {
            max-width: var(--hjuo-container-width);
            margin: 0 auto;
            padding: 0 24px;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 32px;
        }

        .hjuo-engine-card {
            background: #fff;
            padding: 48px;
            border-radius: 24px;
            border: 1px solid transparent;
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
            min-width: 0;
        }

        .hjuo-engine-card:hover {
            border-color: var(--hjuo-primary);
            box-shadow: 0 12px 32px rgba(66, 133, 244, 0.1);
        }

        .hjuo-card-tag {
            font-size: 12px;
            text-transform: uppercase;
            letter-spacing: 1px;
            color: var(--hjuo-primary);
            font-weight: 700;
            margin-bottom: 16px;
        }

        .hjuo-card-title {
            font-size: 24px;
            margin-bottom: 20px;
            color: var(--hjuo-dark);
        }

        .hjuo-card-body {
            font-size: 16px;
            color: #5f6368;
            margin-bottom: 24px;
            flex-grow: 1;
        }

        .hjuo-card-footer {
            padding-top: 24px;
            border-top: 1px solid #eee;
            font-weight: 600;
            color: var(--hjuo-success);
        }

        /* 用户流程 - 步骤条 */
        .hjuo-flow-section {
            padding: 96px 0;
            background: #fff;
        }

        .hjuo-flow-container {
            max-width: 1100px;
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
        }

        .hjuo-flow-step {
            flex: 1;
            min-width: 280px;
            position: relative;
        }

        .hjuo-step-number {
            font-size: 64px;
            font-weight: 900;
            color: rgba(66, 133, 244, 0.1);
            position: absolute;
            top: -32px;
            left: 0;
            z-index: 1;
        }

        .hjuo-step-content {
            position: relative;
            z-index: 2;
            padding-top: 24px;
        }

        .hjuo-step-title {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 12px;
        }

        /* 动态内容区 */
        .hjuo-dynamic-section {
            padding: 80px 0;
            background: #f1f3f4;
        }

        .hjuo-news-grid {
            max-width: var(--hjuo-container-width);
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
        }

        .hjuo-news-item {
            flex: 1;
            min-width: 300px;
            background: #fff;
            padding: 32px;
            border-radius: 16px;
        }

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

        .hjuo-footer-grid {
            max-width: var(--hjuo-container-width);
            margin: 0 auto;
            padding: 0 24px;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 48px;
            border-bottom: 1px solid rgba(255,255,255,0.1);
            padding-bottom: 64px;
        }

        .hjuo-footer-brand {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 24px;
        }

        .hjuo-footer-links h4 {
            margin-bottom: 24px;
            color: #9aa0a6;
        }

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

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

        .hjuo-footer-links a {
            color: #e8eaed;
            text-decoration: none;
            transition: color 0.3s;
        }

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

        .hjuo-copyright {
            text-align: center;
            padding-top: 40px;
            color: #9aa0a6;
            font-size: 14px;
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .hjuo-nav-menu {
                display: none; /* 简化移动端，实际项目中应有汉堡菜单 */
            }
            .hjuo-hero-grid {
                grid-template-columns: 1fr;
                text-align: center;
            }
            .hjuo-hero-subtitle {
                margin: 0 auto 40px auto;
            }
            .hjuo-shield-core {
                width: 140px;
                height: 140px;
            }
            .hjuo-shield-inner {
                width: 110px;
                height: 110px;
                font-size: 32px;
            }
        }