:root {
            --hwo3t-primary: #EE4122;
            --hwo3t-primary-hover: #D8361B;
            --hwo3t-secondary: #4A90E2;
            --hwo3t-bg-light: #F8F9FA;
            --hwo3t-text-main: #2D3436;
            --hwo3t-text-muted: #636E72;
            --hwo3t-white: #FFFFFF;
            --hwo3t-glass: rgba(255, 255, 255, 0.85);
            --hwo3t-max-width: 1400px;
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: var(--hwo3t-bg-light);
            color: var(--hwo3t-text-main);
            line-height: 1.6;
            overflow-x: hidden;
        }

        /* 导航栏 */
        .hwo3t-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: var(--hwo3t-glass);
            backdrop-filter: blur(15px);
            border-bottom: 1px solid rgba(0,0,0,0.05);
            transition: all 0.3s ease;
        }

        .hwo3t-nav-container {
            max-width: var(--hwo3t-max-width);
            margin: 0 auto;
            padding: 0 24px;
            height: 72px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }

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

        .hwo3t-logo img {
            height: 36px;
            width: auto;
        }

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

        .hwo3t-nav-menu a {
            text-decoration: none;
            color: var(--hwo3t-text-main);
            font-weight: 500;
            font-size: 15px;
            transition: color 0.3s;
            white-space: nowrap;
        }

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

        .hwo3t-nav-menu a.active {
            color: var(--hwo3t-primary);
            position: relative;
        }

        .hwo3t-nav-menu a.active::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 0;
            width: 100%;
            height: 3px;
            background: var(--hwo3t-primary);
            border-radius: 2px;
        }

        /* Hero 区块 - 独特非对称布局 */
        .hwo3t-hero {
            padding-top: 144px;
            padding-bottom: 96px;
            background: radial-gradient(circle at top right, rgba(238, 65, 34, 0.05), transparent),
                        radial-gradient(circle at bottom left, rgba(74, 144, 226, 0.05), transparent);
            position: relative;
            overflow: hidden;
        }

        .hwo3t-hero-wrapper {
            max-width: var(--hwo3t-max-width);
            margin: 0 auto;
            padding: 0 48px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 64px;
        }

        .hwo3t-hero-content {
            flex: 1;
            min-width: 320px;
            word-break: keep-all;
        }

        .hwo3t-hero-title {
            font-size: clamp(2rem, 4vw + 1rem, 4rem);
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 24px;
            color: var(--hwo3t-text-main);
            word-break: break-word;
        }

        .hwo3t-hero-subtitle {
            font-size: clamp(1rem, 1.5vw + 0.5rem, 1.25rem);
            color: var(--hwo3t-text-muted);
            margin-bottom: 48px;
            max-width: 600px;
            word-break: break-word;
        }

        /* 下载卡片组件 */
        .hwo3t-download-panel {
            flex: 0 0 420px;
            min-width: 0;
            background: var(--hwo3t-white);
            padding: 40px;
            border-radius: 24px;
            box-shadow: 0 20px 40px rgba(0,0,0,0.08);
            border: 1px solid rgba(0,0,0,0.02);
            position: relative;
        }

        .hwo3t-download-btn {
            display: block;
            width: 100%;
            padding: 20px;
            background: linear-gradient(135deg, var(--hwo3t-primary), #FF6B52);
            color: var(--hwo3t-white);
            text-align: center;
            text-decoration: none;
            border-radius: 12px;
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 24px;
            transition: transform 0.3s, box-shadow 0.3s;
            box-shadow: 0 10px 20px rgba(238, 65, 34, 0.2);
        }

        .hwo3t-download-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 15px 30px rgba(238, 65, 34, 0.3);
        }

        .hwo3t-version-info {
            display: flex;
            justify-content: space-between;
            font-size: 14px;
            color: var(--hwo3t-text-muted);
            border-top: 1px solid #F0F0F0;
            padding-top: 24px;
        }

        /* 场景化智能方案区块 */
        .hwo3t-section {
            padding: 96px 24px;
            max-width: var(--hwo3t-max-width);
            margin: 0 auto;
        }

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

        .hwo3t-section-header h2 {
            font-size: clamp(1.5rem, 3vw, 2.5rem);
            margin-bottom: 16px;
        }

        .hwo3t-scenario-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 32px;
        }

        .hwo3t-scenario-card {
            background: var(--hwo3t-white);
            padding: 48px;
            border-radius: 20px;
            transition: transform 0.3s;
            border: 1px solid transparent;
            word-break: break-word;
        }

        .hwo3t-scenario-card:hover {
            transform: translateY(-8px);
            border-color: rgba(238, 65, 34, 0.1);
            box-shadow: 0 10px 30px rgba(0,0,0,0.05);
        }

        .hwo3t-scenario-type {
            font-size: 14px;
            font-weight: 700;
            text-transform: uppercase;
            color: var(--hwo3t-primary);
            letter-spacing: 1px;
            margin-bottom: 16px;
            display: block;
        }

        .hwo3t-scenario-title {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 24px;
        }

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

        .hwo3t-capability-item {
            position: relative;
            padding-left: 28px;
            margin-bottom: 12px;
            color: var(--hwo3t-text-muted);
            font-size: 15px;
        }

        .hwo3t-capability-item::before {
            content: "✓";
            position: absolute;
            left: 0;
            color: #27AE60;
            font-weight: bold;
        }

        /* 动态内容区块 - 资讯 */
        .hwo3t-news-section {
            background: #FFFFFF;
            padding: 80px 24px;
            border-radius: 40px;
            margin: 40px auto;
            max-width: calc(var(--hwo3t-max-width) - 48px);
        }

        /* 页脚 */
        .hwo3t-footer {
            background: #1D1D1F;
            color: #A1A1A6;
            padding: 80px 24px 40px;
        }

        .hwo3t-footer-content {
            max-width: var(--hwo3t-max-width);
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            gap: 64px;
            justify-content: space-between;
        }

        .hwo3t-footer-brand {
            flex: 0 0 300px;
            min-width: 0;
        }

        .hwo3t-footer-brand h3 {
            color: var(--hwo3t-white);
            font-size: 24px;
            margin-bottom: 16px;
        }

        .hwo3t-footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
            min-width: 0;
        }

        .hwo3t-link-group h4 {
            color: var(--hwo3t-white);
            margin-bottom: 20px;
            font-size: 16px;
        }

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

        .hwo3t-link-group li {
            margin-bottom: 10px;
        }

        .hwo3t-link-group a {
            color: #A1A1A6;
            text-decoration: none;
            font-size: 14px;
            transition: color 0.3s;
        }

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

        .hwo3t-copyright {
            max-width: var(--hwo3t-max-width);
            margin: 64px auto 0;
            padding-top: 32px;
            border-top: 1px solid rgba(255,255,255,0.1);
            text-align: center;
            font-size: 13px;
        }

        /* 响应式适配 */
        @media (max-width: 1024px) {
            .hwo3t-hero-wrapper {
                flex-direction: column;
                text-align: center;
            }
            .hwo3t-hero-content {
                max-width: 100%;
            }
            .hwo3t-download-panel {
                flex: 1;
                width: 100%;
                max-width: 500px;
            }
        }

        @media (max-width: 768px) {
            .hwo3t-nav-container {
                height: auto;
                padding: 16px;
            }
            .hwo3t-nav-menu {
                display: none; /* 简化演示，实际可做汉堡菜单 */
            }
            .hwo3t-scenario-grid {
                grid-template-columns: 1fr;
            }
            .hwo3t-hero {
                padding-top: 100px;
            }
        }