:root {
            --hjuo-primary: #1a73e8;
            --hjuo-accent: #34a853;
            --hjuo-dark: #202124;
            --hjuo-light: #f8f9fa;
            --hjuo-gray: #5f6368;
            --hjuo-white: #ffffff;
            --hjuo-shadow: 0 10px 30px rgba(0,0,0,0.08);
            --hjuo-radius: 16px;
        }

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

        body {
            font-family: "PingFang SC", "Microsoft YaHei", -apple-system, sans-serif;
            background-color: var(--hjuo-white);
            color: var(--hjuo-dark);
            line-height: 1.6;
            overflow-x: hidden;
            word-break: keep-all;
            overflow-wrap: break-word;
        }

        /* 导航栏设计 */
        .hjuo-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(15px);
            border-bottom: 1px solid rgba(0,0,0,0.05);
            transition: all 0.3s ease;
        }

        .hjuo-nav-container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 48px;
            height: 80px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
        }

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

        .hjuo-logo img {
            height: 40px;
            width: auto;
        }

        .hjuo-menu {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 24px;
            min-width: 0;
        }

        .hjuo-menu li a {
            text-decoration: none;
            color: var(--hjuo-gray);
            font-size: 15px;
            font-weight: 500;
            transition: color 0.3s;
            padding: 8px 0;
            position: relative;
        }

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

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

        /* Hero下载区 - 独特全屏渐变布局 */
        .hjuo-hero {
            padding-top: 160px;
            padding-bottom: 96px;
            background: radial-gradient(circle at 80% 20%, #e8f0fe 0%, #ffffff 50%);
            text-align: center;
            overflow: hidden;
        }

        .hjuo-hero-inner {
            max-width: 1100px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .hjuo-hero-title {
            font-size: clamp(2.5rem, 5vw + 1rem, 4.5rem);
            font-weight: 800;
            line-height: 1.1;
            margin-bottom: 24px;
            color: var(--hjuo-dark);
            letter-spacing: -1px;
        }

        .hjuo-hero-subtitle {
            font-size: clamp(1.1rem, 1.5vw + 0.5rem, 1.4rem);
            color: var(--hjuo-gray);
            max-width: 800px;
            margin: 0 auto 48px;
            line-height: 1.8;
        }

        .hjuo-download-group {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 24px;
            margin-bottom: 64px;
            min-width: 0;
        }

        .hjuo-btn-primary {
            background: var(--hjuo-primary);
            color: var(--hjuo-white);
            padding: 20px 48px;
            border-radius: 50px;
            text-decoration: none;
            font-size: 1.2rem;
            font-weight: 600;
            box-shadow: 0 15px 30px rgba(26, 115, 232, 0.3);
            transition: transform 0.3s, box-shadow 0.3s;
        }

        .hjuo-btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 20px 40px rgba(26, 115, 232, 0.4);
        }

        .hjuo-hero-banner {
            width: 90vw;
            max-width: 1400px;
            margin: 0 auto;
            border-radius: 24px;
            overflow: hidden;
            box-shadow: 0 40px 80px rgba(0,0,0,0.12);
        }

        .hjuo-hero-banner img {
            width: 100%;
            height: auto;
            display: block;
        }

        /* 核心引擎区块 - Grid布局 */
        .hjuo-section-engine {
            padding: 96px 0;
            max-width: 1400px;
            margin: 0 auto;
            padding-left: 48px;
            padding-right: 48px;
        }

        .hjuo-grid-engine {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 32px;
        }

        .hjuo-engine-card {
            background: var(--hjuo-light);
            padding: 48px;
            border-radius: var(--hjuo-radius);
            transition: background 0.3s, transform 0.3s;
            min-width: 0;
        }

        .hjuo-engine-card:hover {
            background: var(--hjuo-white);
            transform: translateY(-10px);
            box-shadow: var(--hjuo-shadow);
        }

        .hjuo-engine-tag {
            display: inline-block;
            padding: 6px 12px;
            background: rgba(26, 115, 232, 0.1);
            color: var(--hjuo-primary);
            border-radius: 6px;
            font-size: 13px;
            font-weight: bold;
            margin-bottom: 20px;
        }

        .hjuo-engine-name {
            font-size: 24px;
            margin-bottom: 16px;
        }

        .hjuo-engine-detail {
            color: var(--hjuo-gray);
            font-size: 16px;
            line-height: 1.7;
        }

        /* 视觉节奏：图文交替 */
        .hjuo-feature-split {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            padding: 96px 48px;
            max-width: 1400px;
            margin: 0 auto;
            gap: 64px;
        }

        .hjuo-feature-split:nth-child(even) {
            flex-direction: row-reverse;
        }

        .hjuo-split-content {
            flex: 1;
            min-width: 300px;
        }

        .hjuo-split-image {
            flex: 1.2;
            min-width: 300px;
            border-radius: var(--hjuo-radius);
            overflow: hidden;
            box-shadow: var(--hjuo-shadow);
        }

        .hjuo-split-image img {
            width: 100%;
            height: auto;
            display: block;
        }

        /* 步骤流程 */
        .hjuo-flow-section {
            background: var(--hjuo-dark);
            color: var(--hjuo-white);
            padding: 96px 48px;
        }

        .hjuo-flow-container {
            max-width: 1200px;
            margin: 0 auto;
        }

        .hjuo-flow-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            margin-top: 64px;
            min-width: 0;
        }

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

        .hjuo-flow-step {
            font-size: 64px;
            font-weight: 800;
            opacity: 0.2;
            margin-bottom: -20px;
            display: block;
        }

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

        .hjuo-flow-text {
            color: #bdc1c6;
        }

        /* 页脚 */
        .hjuo-footer {
            padding: 80px 48px;
            background: var(--hjuo-light);
            border-top: 1px solid #eee;
        }

        .hjuo-footer-inner {
            max-width: 1400px;
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 48px;
        }

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

        .hjuo-footer-brand-name {
            font-size: 24px;
            font-weight: 700;
            color: var(--hjuo-dark);
            margin-bottom: 16px;
        }

        .hjuo-footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 64px;
            min-width: 0;
        }

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

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

        .hjuo-link-col ul li {
            margin-bottom: 12px;
        }

        .hjuo-link-col ul li a {
            text-decoration: none;
            color: var(--hjuo-gray);
            transition: color 0.3s;
        }

        .hjuo-link-col ul li a:hover {
            color: var(--hjuo-primary);
        }

        /* 响应式适配 */
        @media (max-width: 1024px) {
            .hjuo-nav-container { padding: 0 24px; }
            .hjuo-feature-split { padding: 64px 24px; }
        }

        @media (max-width: 768px) {
            .hjuo-menu { display: none; } /* 移动端可改为汉堡菜单，此处简化 */
            .hjuo-hero { padding-top: 120px; }
            .hjuo-grid-engine { grid-template-columns: 1fr; }
            .hjuo-feature-split { flex-direction: column !important; text-align: center; }
            .hjuo-flow-item { text-align: center; }
        }