:root {
            --hwo3t-primary: #FF6600;
            --hwo3t-primary-grad: linear-gradient(135deg, #FF8C00 0%, #FF4500 100%);
            --hwo3t-secondary: #4F46E5;
            --hwo3t-text-main: #1D1D1F;
            --hwo3t-text-sub: #6E6E73;
            --hwo3t-bg-light: #FBFBFD;
            --hwo3t-white: #FFFFFF;
            --hwo3t-glass: rgba(255, 255, 255, 0.8);
            --hwo3t-radius: 16px;
            --hwo3t-transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            font-family: "PingFang SC", "Microsoft YaHei", -apple-system, sans-serif;
            background-color: var(--hwo3t-bg-light);
            color: var(--hwo3t-text-main);
            line-height: 1.6;
            overflow-x: hidden;
            word-break: keep-all;
        }

        .hwo3t-container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 48px;
        }

        @media (max-width: 768px) {
            .hwo3t-container {
                padding: 0 24px;
            }
        }

        /* 导航栏 */
        .hwo3t-header {
            position: fixed;
            top: 20px;
            left: 50%;
            transform: translateX(-50%);
            width: 90vw;
            max-width: 1200px;
            height: 72px;
            background: var(--hwo3t-glass);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-radius: 40px;
            z-index: 1000;
            border: 1px solid rgba(255, 255, 255, 0.3);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 32px;
        }

        .hwo3t-logo {
            flex-shrink: 0;
            display: flex;
            align-items: center;
            min-width: 0;
        }

        .hwo3t-logo img {
            height: 32px;
            width: auto;
        }

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

        .hwo3t-nav-link {
            text-decoration: none;
            color: var(--hwo3t-text-main);
            font-size: 15px;
            font-weight: 500;
            transition: var(--hwo3t-transition);
            position: relative;
        }

        .hwo3t-nav-link:hover {
            color: var(--hwo3t-primary);
        }

        .hwo3t-nav-link.hwo3t-active {
            color: var(--hwo3t-primary);
        }

        .hwo3t-nav-link.hwo3t-active::after {
            content: '';
            position: absolute;
            bottom: -6px;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--hwo3t-primary);
            border-radius: 2px;
        }

        @media (max-width: 1024px) {
            .hwo3t-nav-list {
                display: none; /* 简化演示，移动端通常使用汉堡菜单 */
            }
        }

        /* Hero 区块 - 独特非对称布局 */
        .hwo3t-hero {
            padding: 180px 0 100px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            min-width: 0;
            background: radial-gradient(circle at 80% 20%, rgba(255, 102, 0, 0.05) 0%, transparent 50%);
        }

        .hwo3t-hero-content {
            flex: 1;
            min-width: 320px;
            padding-right: 60px;
            word-break: break-word;
        }

        .hwo3t-hero-title {
            font-size: clamp(2.5rem, 5vw + 1rem, 4.5rem);
            line-height: 1.1;
            font-weight: 800;
            margin-bottom: 24px;
            background: linear-gradient(to right, #1d1d1f, #434343);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hwo3t-hero-subtitle {
            font-size: clamp(1.1rem, 1vw + 0.5rem, 1.4rem);
            color: var(--hwo3t-text-sub);
            margin-bottom: 48px;
            max-width: 600px;
        }

        .hwo3t-download-group {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            min-width: 0;
        }

        .hwo3t-btn-primary {
            display: inline-flex;
            align-items: center;
            padding: 18px 36px;
            background: var(--hwo3t-primary-grad);
            color: white;
            text-decoration: none;
            border-radius: 50px;
            font-weight: 600;
            font-size: 18px;
            box-shadow: 0 10px 20px rgba(255, 102, 0, 0.2);
            transition: var(--hwo3t-transition);
        }

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

        .hwo3t-hero-visual {
            flex: 1;
            min-width: 320px;
            position: relative;
            display: flex;
            justify-content: center;
        }

        .hwo3t-mockup-wrap {
            position: relative;
            width: 100%;
            max-width: 500px;
        }

        .hwo3t-mockup-img {
            width: 100%;
            height: auto;
            filter: drop-shadow(0 30px 60px rgba(0,0,0,0.12));
            border-radius: 40px;
        }

        /* 场景化智能方案 - Grid 布局 */
        .hwo3t-scenarios {
            padding: 120px 0;
            background: var(--hwo3t-white);
        }

        .hwo3t-section-header {
            text-align: center;
            margin-bottom: 80px;
        }

        .hwo3t-section-tag {
            color: var(--hwo3t-primary);
            text-transform: uppercase;
            letter-spacing: 2px;
            font-weight: 700;
            font-size: 14px;
            display: block;
            margin-bottom: 16px;
        }

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

        .hwo3t-scenario-card {
            background: var(--hwo3t-bg-light);
            padding: 48px;
            border-radius: var(--hwo3t-radius);
            transition: var(--hwo3t-transition);
            border: 1px solid transparent;
            word-break: break-word;
        }

        .hwo3t-scenario-card:hover {
            background: var(--hwo3t-white);
            border-color: rgba(255, 102, 0, 0.1);
            box-shadow: 0 20px 40px rgba(0,0,0,0.04);
            transform: translateY(-8px);
        }

        .hwo3t-scenario-icon {
            font-size: 40px;
            margin-bottom: 24px;
            display: block;
        }

        .hwo3t-scenario-title {
            font-size: 24px;
            margin-bottom: 20px;
            color: var(--hwo3t-text-main);
        }

        .hwo3t-capability-list {
            list-style: none;
        }

        .hwo3t-capability-item {
            padding: 8px 0;
            color: var(--hwo3t-text-sub);
            font-size: 16px;
            display: flex;
            align-items: center;
        }

        .hwo3t-capability-item::before {
            content: "✓";
            color: var(--hwo3t-primary);
            margin-right: 12px;
            font-weight: bold;
        }

        /* 核心功能区 - 图文交替 */
        .hwo3t-features {
            padding: 120px 0;
        }

        .hwo3t-feature-row {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            margin-bottom: 120px;
            min-width: 0;
        }

        .hwo3t-feature-row:nth-child(even) {
            flex-direction: row-reverse;
        }

        .hwo3t-feature-text {
            flex: 1;
            min-width: 320px;
            padding: 40px;
        }

        .hwo3t-feature-image {
            flex: 1;
            min-width: 320px;
            padding: 40px;
        }

        .hwo3t-feature-image img {
            width: 100%;
            border-radius: 24px;
            box-shadow: 0 20px 50px rgba(0,0,0,0.08);
        }

        .hwo3t-feature-title {
            font-size: clamp(1.8rem, 3vw, 2.8rem);
            margin-bottom: 24px;
            line-height: 1.2;
        }

        /* 动态区块标记 */
        .hwo3t-news-section {
            padding: 100px 0;
            background: #000;
            color: #fff;
        }

        /* 页脚 */
        .hwo3t-footer {
            padding: 80px 0 40px;
            background: var(--hwo3t-white);
            border-top: 1px solid #eee;
        }

        .hwo3t-footer-top {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            margin-bottom: 60px;
            gap: 40px;
        }

        .hwo3t-footer-brand {
            flex: 1;
            min-width: 240px;
        }

        .hwo3t-brand-name {
            font-size: 24px;
            font-weight: 700;
            color: var(--hwo3t-primary);
            margin-bottom: 16px;
        }

        .hwo3t-footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 60px;
            flex: 2;
            min-width: 320px;
        }

        .hwo3t-link-group h4 {
            margin-bottom: 24px;
            font-size: 16px;
        }

        .hwo3t-link-group ul {
            list-style: none;
        }

        .hwo3t-link-group li {
            margin-bottom: 12px;
        }

        .hwo3t-link-group a {
            text-decoration: none;
            color: var(--hwo3t-text-sub);
            transition: var(--hwo3t-transition);
        }

        .hwo3t-link-group a:hover {
            color: var(--hwo3t-primary);
        }

        .hwo3t-copyright {
            text-align: center;
            padding-top: 40px;
            border-top: 1px solid #f0f0f0;
            color: #999;
            font-size: 14px;
        }

        @media (max-width: 768px) {
            .hwo3t-header {
                width: calc(100% - 32px);
                padding: 0 20px;
            }
            .hwo3t-hero {
                padding-top: 120px;
                text-align: center;
            }
            .hwo3t-hero-content {
                padding-right: 0;
                margin-bottom: 60px;
            }
            .hwo3t-download-group {
                justify-content: center;
            }
            .hwo3t-feature-row {
                margin-bottom: 60px;
            }
            .hwo3t-feature-text, .hwo3t-feature-image {
                padding: 20px;
            }
        }