:root {
            --eztx-primary: #D42D2D;
            --eztx-secondary: #1A1A1B;
            --eztx-accent: #3B82F6;
            --eztx-bg-soft: #F5F7FA;
            --eztx-text-main: #2D3436;
            --eztx-text-muted: #636E72;
            --eztx-white: #FFFFFF;
            --eztx-radius: 16px;
            --eztx-shadow: 0 10px 30px rgba(0,0,0,0.05);
            --eztx-container-width: 1320px;
        }

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

        body {
            font-family: "Inter", "Microsoft YaHei", sans-serif;
            color: var(--eztx-text-main);
            line-height: 1.6;
            background-color: var(--eztx-white);
            overflow-x: hidden;
        }

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

        .eztx-flex {
            display: flex;
            flex-wrap: wrap;
        }

        .eztx-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 32px;
        }

        /* 导航栏 */
        .eztx-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(0,0,0,0.05);
            padding: 16px 0;
        }

        .eztx-nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }

        .eztx-logo {
            flex-shrink: 0;
            min-width: 0;
        }

        .eztx-logo img {
            height: 32px;
            display: block;
        }

        .eztx-nav-menu {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

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

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

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

        .eztx-nav-menu li a.active::after {
            content: "";
            position: absolute;
            bottom: -8px;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--eztx-primary);
        }

        /* Hero 区 - 独特不对称布局 */
        .eztx-hero {
            padding: 160px 0 96px;
            background: radial-gradient(circle at 80% 20%, #FFF5F5 0%, #FFFFFF 100%);
            position: relative;
            overflow: hidden;
        }

        .eztx-hero-inner {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 48px;
        }

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

        .eztx-hero-tag {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(212, 45, 45, 0.1);
            color: var(--eztx-primary);
            border-radius: 50px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 24px;
        }

        .eztx-hero h1 {
            font-size: clamp(2.5rem, 5vw + 1rem, 4rem);
            line-height: 1.1;
            font-weight: 800;
            margin-bottom: 24px;
            color: var(--eztx-secondary);
        }

        .eztx-hero p {
            font-size: clamp(1.1rem, 1vw + 0.5rem, 1.3rem);
            color: var(--eztx-text-muted);
            margin-bottom: 40px;
            max-width: 600px;
        }

        .eztx-download-card {
            flex: 1;
            min-width: 320px;
            background: var(--eztx-white);
            padding: 48px;
            border-radius: var(--eztx-radius);
            box-shadow: 0 30px 60px rgba(0,0,0,0.1);
            border: 1px solid rgba(0,0,0,0.03);
            text-align: center;
        }

        /* 下载按钮 */
        .eztx-btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 18px 48px;
            background: linear-gradient(135deg, #FF4B4B 0%, #D42D2D 100%);
            color: white;
            text-decoration: none;
            border-radius: 12px;
            font-size: 18px;
            font-weight: 600;
            transition: transform 0.3s, box-shadow 0.3s;
            margin-bottom: 16px;
            border: none;
            cursor: pointer;
            width: 100%;
        }

        .eztx-btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 15px 30px rgba(212, 45, 45, 0.3);
        }

        .eztx-version-info {
            font-size: 14px;
            color: var(--eztx-text-muted);
        }

        /* 协作引擎区 */
        .eztx-section {
            padding: 96px 0;
        }

        .eztx-section-header {
            text-align: center;
            margin-bottom: 64px;
            max-width: 800px;
            margin-left: auto;
            margin-right: auto;
        }

        .eztx-section-header h2 {
            font-size: clamp(2rem, 3vw + 0.5rem, 2.8rem);
            margin-bottom: 16px;
            color: var(--eztx-secondary);
        }

        .eztx-engine-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
            gap: 40px;
        }

        .eztx-engine-card {
            background: var(--eztx-bg-soft);
            padding: 40px;
            border-radius: 24px;
            transition: background 0.3s;
        }

        .eztx-engine-card:hover {
            background: #EDF2F7;
        }

        .eztx-engine-title {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--eztx-secondary);
        }

        .eztx-engine-desc {
            margin-bottom: 24px;
            color: var(--eztx-text-muted);
        }

        .eztx-metrics {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            border-top: 1px solid rgba(0,0,0,0.1);
            padding-top: 24px;
        }

        .eztx-metric-item {
            flex: 1;
            min-width: 100px;
        }

        .eztx-metric-value {
            display: block;
            font-weight: 800;
            color: var(--eztx-primary);
            font-size: 18px;
        }

        .eztx-metric-label {
            font-size: 12px;
            text-transform: uppercase;
            letter-spacing: 1px;
            color: var(--eztx-text-muted);
        }

        /* 资讯区块 */
        .eztx-news-section {
            background-color: var(--eztx-secondary);
            color: var(--eztx-white);
        }

        .eztx-news-section h2 {
            color: var(--eztx-white);
        }

        .eztx-news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }

        .eztx-news-item {
            background: rgba(255,255,255,0.05);
            padding: 32px;
            border-radius: 16px;
            border: 1px solid rgba(255,255,255,0.1);
            transition: border-color 0.3s;
        }

        .eztx-news-item:hover {
            border-color: var(--eztx-primary);
        }

        /* 底部 */
        .eztx-footer {
            padding: 64px 0;
            background: #F9FAFB;
            border-top: 1px solid #EEEEEE;
        }

        .eztx-footer-inner {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 48px;
        }

        .eztx-footer-brand {
            flex: 2;
            min-width: 300px;
        }

        .eztx-brand-name {
            font-size: 20px;
            font-weight: 700;
            color: var(--eztx-secondary);
            margin-bottom: 16px;
            display: block;
        }

        .eztx-footer-links {
            flex: 3;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
            gap: 32px;
            min-width: 300px;
        }

        .eztx-footer-list {
            list-style: none;
        }

        .eztx-footer-list li {
            margin-bottom: 12px;
        }

        .eztx-footer-list a {
            text-decoration: none;
            color: var(--eztx-text-muted);
            font-size: 14px;
            transition: color 0.3s;
        }

        .eztx-footer-list a:hover {
            color: var(--eztx-primary);
        }

        .eztx-copyright {
            margin-top: 64px;
            padding-top: 32px;
            border-top: 1px solid #EEEEEE;
            font-size: 14px;
            color: var(--eztx-text-muted);
            text-align: center;
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .eztx-nav-menu {
                display: none; /* 简化移动端展示 */
            }
            
            .eztx-hero {
                padding: 120px 0 64px;
            }

            .eztx-hero-inner {
                flex-direction: column;
                text-align: center;
            }

            .eztx-hero p {
                margin-left: auto;
                margin-right: auto;
            }

            .eztx-engine-grid {
                grid-template-columns: 1fr;
            }
        }