:root {
            --eztx-primary: #D42323;
            --eztx-secondary: #2D3436;
            --eztx-accent: #FF4757;
            --eztx-bg: #F9FAFB;
            --eztx-white: #FFFFFF;
            --eztx-text: #1E293B;
            --eztx-gray: #64748B;
            --eztx-spacing-unit: 8px;
            --eztx-container-width: 1100px;
        }

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

        body {
            font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
            background-color: var(--eztx-bg);
            color: var(--eztx-text);
            line-height: 1.6;
            word-break: break-word;
        }

        /* 导航系统 */
        .eztx-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid rgba(0,0,0,0.05);
            box-shadow: 0 4px 20px rgba(0,0,0,0.03);
        }

        .eztx-nav-container {
            max-width: var(--eztx-container-width);
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding: 16px 24px;
        }

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

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

        .eztx-nav-menu {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 20px;
            min-width: 0;
        }

        .eztx-nav-menu li {
            min-width: 0;
        }

        .eztx-nav-link {
            text-decoration: none;
            color: var(--eztx-secondary);
            font-size: 14px;
            font-weight: 500;
            transition: color 0.3s ease;
            white-space: nowrap;
        }

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

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

        .eztx-nav-link.eztx-active::after {
            content: '';
            position: absolute;
            bottom: -4px;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--eztx-primary);
        }

        /* Hero 视觉区 */
        .eztx-hero {
            padding: 96px 24px;
            text-align: center;
            background: radial-gradient(circle at top right, #fff5f5, #ffffff);
            overflow: hidden;
        }

        .eztx-hero-content {
            max-width: 800px;
            margin: 0 auto;
        }

        .eztx-hero-title {
            font-size: clamp(2rem, 5vw + 1rem, 3.5rem);
            line-height: 1.2;
            font-weight: 800;
            color: var(--eztx-secondary);
            margin-bottom: 24px;
            word-break: keep-all;
        }

        .eztx-hero-subtitle {
            font-size: clamp(1rem, 2vw + 0.5rem, 1.25rem);
            color: var(--eztx-gray);
            margin-bottom: 48px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .eztx-cta-group {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
        }

        .eztx-btn {
            display: inline-block;
            padding: 16px 40px;
            border-radius: 50px;
            font-weight: 600;
            text-decoration: none;
            transition: all 0.3s ease;
            cursor: pointer;
            text-align: center;
            min-width: 180px;
        }

        .eztx-btn-primary {
            background: var(--eztx-primary);
            color: var(--eztx-white);
            box-shadow: 0 10px 20px rgba(212, 35, 35, 0.2);
        }

        .eztx-btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 15px 30px rgba(212, 35, 35, 0.3);
        }

        /* 字体展示卡片区 */
        .eztx-section {
            padding: 80px 24px;
            max-width: var(--eztx-container-width);
            margin: 0 auto;
        }

        .eztx-section-header {
            margin-bottom: 48px;
            border-left: 4px solid var(--eztx-primary);
            padding-left: 24px;
        }

        .eztx-section-title {
            font-size: 2rem;
            margin-bottom: 12px;
        }

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

        .eztx-card {
            background: var(--eztx-white);
            border-radius: 16px;
            padding: 32px;
            border: 1px solid rgba(0,0,0,0.05);
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
            min-width: 0;
        }

        .eztx-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 20px 40px rgba(0,0,0,0.08);
        }

        .eztx-card-tag {
            font-size: 12px;
            color: var(--eztx-primary);
            font-weight: bold;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 16px;
        }

        .eztx-card-preview {
            font-size: 28px;
            margin-bottom: 24px;
            color: var(--eztx-secondary);
            border-bottom: 1px dashed #eee;
            padding-bottom: 16px;
        }

        .eztx-card-desc {
            font-size: 14px;
            color: var(--eztx-gray);
            flex-grow: 1;
        }

        /* 协作引擎技术展示 */
        .eztx-engine-section {
            background: var(--eztx-secondary);
            color: var(--eztx-white);
            padding: 96px 24px;
            border-radius: 40px;
            margin: 40px 24px;
        }

        .eztx-engine-container {
            max-width: var(--eztx-container-width);
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
        }

        .eztx-engine-item {
            flex: 1;
            min-width: 300px;
        }

        .eztx-engine-item h3 {
            color: var(--eztx-primary);
            font-size: 1.5rem;
            margin-bottom: 16px;
        }

        .eztx-engine-badge {
            display: inline-block;
            background: rgba(212, 35, 35, 0.1);
            color: var(--eztx-primary);
            border: 1px solid var(--eztx-primary);
            padding: 4px 12px;
            border-radius: 4px;
            font-size: 12px;
            margin-top: 16px;
        }

        .eztx-metrics {
            margin-top: 24px;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            background: rgba(255,255,255,0.05);
            padding: 16px;
            border-radius: 12px;
        }

        .eztx-metric-unit {
            font-size: 13px;
            opacity: 0.8;
        }

        /* 资讯区块 */
        .eztx-news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 24px;
        }

        .eztx-news-item {
            padding: 24px;
            border-bottom: 1px solid #eee;
            min-width: 0;
        }

        /* 页脚 */
        .eztx-footer {
            background: #fff;
            padding: 64px 24px;
            border-top: 1px solid #eee;
            text-align: center;
        }

        .eztx-footer-brand {
            font-size: 1.25rem;
            font-weight: bold;
            margin-bottom: 16px;
            color: var(--eztx-secondary);
        }

        .eztx-footer-links {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 24px;
            margin-bottom: 32px;
        }

        .eztx-footer-links a {
            text-decoration: none;
            color: var(--eztx-gray);
            font-size: 14px;
        }

        .eztx-copyright {
            color: #94a3b8;
            font-size: 12px;
        }

        /* 响应式适配 */
        @media (max-width: 768px) {
            .eztx-nav-menu {
                display: none; /* 简化移动端，实际项目中会使用汉堡菜单 */
            }
            .eztx-hero {
                padding: 64px 16px;
            }
            .eztx-engine-section {
                margin: 20px 10px;
                border-radius: 20px;
            }
            .eztx-section-title {
                font-size: 1.5rem;
            }
        }