:root {
            --hwo3t-primary: #ff6600;
            --hwo3t-primary-light: #ff8533;
            --hwo3t-secondary: #2c3e50;
            --hwo3t-bg-light: #f8fafc;
            --hwo3t-text-dark: #1e293b;
            --hwo3t-text-muted: #64748b;
            --hwo3t-white: #ffffff;
            --hwo3t-shadow: 0 10px 30px rgba(0,0,0,0.05);
            --hwo3t-radius: 16px;
            --hwo3t-container-width: 1100px;
        }

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

        body {
            font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
            background-color: var(--hwo3t-bg-light);
            color: var(--hwo3t-text-dark);
            line-height: 1.6;
            overflow-x: hidden;
        }

        /* 布局基础 */
        .hwo3t-wrapper {
            width: 100%;
            max-width: var(--hwo3t-container-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* 导航栏 */
        .hwo3t-navbar {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 80px;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(15px);
            z-index: 1000;
            border-bottom: 1px solid rgba(0,0,0,0.05);
            display: flex;
            align-items: center;
        }

        .hwo3t-nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            width: 100%;
            max-width: var(--hwo3t-container-width);
            margin: 0 auto;
            padding: 0 24px;
            flex-wrap: wrap;
        }

        .hwo3t-logo {
            flex: 0 0 auto;
            min-width: 0;
        }

        .hwo3t-logo img {
            height: 40px;
            display: block;
        }

        .hwo3t-nav-menu {
            display: flex;
            list-style: none;
            gap: 24px;
            flex-wrap: wrap;
            min-width: 0;
        }

        .hwo3t-nav-item a {
            text-decoration: none;
            color: var(--hwo3t-text-dark);
            font-size: 15px;
            font-weight: 500;
            transition: color 0.3s;
            word-break: keep-all;
        }

        .hwo3t-nav-item a:hover,
        .hwo3t-nav-item.hwo3t-active a {
            color: var(--hwo3t-primary);
        }

        /* Hero 区 - 独特卡片悬浮布局 */
        .hwo3t-hero {
            padding-top: 160px;
            padding-bottom: 96px;
            background: radial-gradient(circle at 90% 10%, rgba(255, 102, 0, 0.05) 0%, transparent 40%),
                        radial-gradient(circle at 10% 90%, rgba(255, 102, 0, 0.03) 0%, transparent 40%);
            text-align: center;
            overflow: hidden;
        }

        .hwo3t-hero-badge {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(255, 102, 0, 0.1);
            color: var(--hwo3t-primary);
            border-radius: 20px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 24px;
            word-break: break-word;
        }

        .hwo3t-hero-title {
            font-size: clamp(2rem, 5vw + 1rem, 3.5rem);
            line-height: 1.2;
            font-weight: 800;
            margin-bottom: 24px;
            word-break: keep-all;
            background: linear-gradient(135deg, #1e293b 0%, #475569 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hwo3t-hero-subtitle {
            font-size: clamp(1rem, 2vw + 0.5rem, 1.25rem);
            color: var(--hwo3t-text-muted);
            max-width: 700px;
            margin: 0 auto 48px;
            word-break: break-word;
        }

        .hwo3t-download-card {
            background: var(--hwo3t-white);
            max-width: 600px;
            margin: 0 auto;
            padding: 40px;
            border-radius: var(--hwo3t-radius);
            box-shadow: 0 20px 50px rgba(0,0,0,0.1);
            position: relative;
            z-index: 2;
            border: 1px solid rgba(255, 102, 0, 0.1);
        }

        .hwo3t-btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 18px 48px;
            background: linear-gradient(135deg, var(--hwo3t-primary) 0%, var(--hwo3t-primary-light) 100%);
            color: white;
            text-decoration: none;
            border-radius: 12px;
            font-size: 18px;
            font-weight: 600;
            transition: transform 0.3s, box-shadow 0.3s;
            box-shadow: 0 10px 20px rgba(255, 102, 0, 0.2);
            width: 100%;
            max-width: 320px;
            word-break: keep-all;
        }

        .hwo3t-btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 15px 30px rgba(255, 102, 0, 0.3);
        }

        .hwo3t-version-info {
            margin-top: 16px;
            font-size: 14px;
            color: var(--hwo3t-text-muted);
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* 场景化智能方案 - 网格布局 */
        .hwo3t-scenarios {
            padding: 96px 0;
            background-color: var(--hwo3t-white);
        }

        .hwo3t-section-header {
            margin-bottom: 64px;
            text-align: left;
        }

        .hwo3t-section-title {
            font-size: clamp(1.5rem, 3vw + 0.5rem, 2.5rem);
            margin-bottom: 16px;
            word-break: keep-all;
        }

        .hwo3t-scenario-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 32px;
        }

        .hwo3t-scenario-card {
            padding: 40px;
            border-radius: var(--hwo3t-radius);
            background: var(--hwo3t-bg-light);
            transition: all 0.3s;
            border: 1px solid transparent;
            display: flex;
            flex-direction: column;
            min-width: 0;
        }

        .hwo3t-scenario-card:hover {
            background: var(--hwo3t-white);
            border-color: var(--hwo3t-primary);
            box-shadow: var(--hwo3t-shadow);
        }

        .hwo3t-scenario-icon {
            font-size: 32px;
            margin-bottom: 24px;
        }

        .hwo3t-scenario-name {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--hwo3t-primary);
        }

        .hwo3t-capability-list {
            list-style: none;
            margin-top: auto;
        }

        .hwo3t-capability-item {
            font-size: 15px;
            margin-bottom: 12px;
            color: var(--hwo3t-text-muted);
            padding-left: 20px;
            position: relative;
            word-break: break-word;
        }

        .hwo3t-capability-item::before {
            content: "•";
            position: absolute;
            left: 0;
            color: var(--hwo3t-primary);
        }

        /* 纯净版对比区 - 对角线分割 */
        .hwo3t-compare {
            padding: 96px 0;
            background: var(--hwo3t-secondary);
            color: var(--hwo3t-white);
            position: relative;
        }

        .hwo3t-compare-content {
            display: flex;
            align-items: center;
            gap: 64px;
            flex-wrap: wrap;
        }

        .hwo3t-compare-text {
            flex: 1;
            min-width: 300px;
        }

        .hwo3t-compare-visual {
            flex: 1;
            min-width: 300px;
            background: rgba(255,255,255,0.05);
            padding: 48px;
            border-radius: var(--hwo3t-radius);
            text-align: center;
        }

        /* 页脚 */
        .hwo3t-footer {
            padding: 80px 0 40px;
            background: var(--hwo3t-bg-light);
            border-top: 1px solid rgba(0,0,0,0.05);
        }

        .hwo3t-footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 48px;
            margin-bottom: 64px;
        }

        .hwo3t-footer-brand {
            font-size: 24px;
            font-weight: 800;
            color: var(--hwo3t-primary);
            margin-bottom: 24px;
        }

        .hwo3t-footer-links h4 {
            margin-bottom: 24px;
            font-size: 16px;
        }

        .hwo3t-footer-links ul {
            list-style: none;
        }

        .hwo3t-footer-links li {
            margin-bottom: 12px;
        }

        .hwo3t-footer-links a {
            text-decoration: none;
            color: var(--hwo3t-text-muted);
            transition: color 0.3s;
        }

        .hwo3t-footer-links a:hover {
            color: var(--hwo3t-primary);
        }

        .hwo3t-copyright {
            text-align: center;
            padding-top: 40px;
            border-top: 1px solid rgba(0,0,0,0.05);
            color: var(--hwo3t-text-muted);
            font-size: 14px;
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .hwo3t-nav-menu {
                display: none; /* 简化移动端，实际项目中会加汉堡菜单 */
            }
            .hwo3t-hero {
                padding-top: 120px;
                padding-bottom: 64px;
            }
            .hwo3t-hero-title {
                font-size: 2.5rem;
            }
            .hwo3t-scenario-grid {
                grid-template-columns: 1fr;
            }
            .hwo3t-compare-content {
                flex-direction: column;
            }
        }

        /* 动画增强 */
        .hwo3t-hover-lift:hover {
            transform: translateY(-5px);
        }