:root {
            --eztx-primary: #21a366;
            --eztx-primary-dark: #187a4d;
            --eztx-accent: #107c41;
            --eztx-bg-light: #f8fafc;
            --eztx-text-main: #1e293b;
            --eztx-text-muted: #64748b;
            --eztx-white: #ffffff;
            --eztx-glass: rgba(255, 255, 255, 0.8);
            --eztx-shadow: 0 10px 30px -10px rgba(0,0,0,0.1);
            --eztx-radius: 16px;
        }

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

        body {
            font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
            background-color: var(--eztx-bg-light);
            color: var(--eztx-text-main);
            line-height: 1.7;
            overflow-x: hidden;
            word-break: keep-all;
        }

        .eztx-container {
            max-width: 94vw;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* 导航栏 */
        .eztx-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: var(--eztx-glass);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(0,0,0,0.05);
            transition: all 0.3s ease;
        }

        .eztx-nav-wrapper {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            height: 72px;
            padding: 0 4vw;
        }

        .eztx-logo {
            flex: 0 0 auto;
            min-width: 0;
            display: flex;
            align-items: center;
        }

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

        .eztx-nav-menu {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 8px;
            min-width: 0;
        }

        .eztx-nav-item {
            min-width: 0;
        }

        .eztx-nav-link {
            text-decoration: none;
            color: var(--eztx-text-main);
            font-size: 14px;
            padding: 8px 16px;
            border-radius: 8px;
            transition: all 0.2s;
            font-weight: 500;
            word-break: break-word;
        }

        .eztx-nav-link:hover {
            background: rgba(33, 163, 102, 0.1);
            color: var(--eztx-primary);
        }

        .eztx-nav-link.active {
            color: var(--eztx-primary);
            background: rgba(33, 163, 102, 0.1);
        }

        /* Hero 区块 - 独特非对称布局 */
        .eztx-hero {
            padding: 160px 0 96px;
            background: radial-gradient(circle at 90% 10%, rgba(33, 163, 102, 0.05) 0%, transparent 40%),
                        linear-gradient(135deg, #ffffff 0%, #f1f5f9 100%);
            position: relative;
            overflow: hidden;
        }

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

        .eztx-hero-text {
            flex: 1 1 500px;
            min-width: 0;
            z-index: 2;
        }

        .eztx-hero-title {
            font-size: clamp(2.2rem, 4vw + 1rem, 3.8rem);
            line-height: 1.2;
            font-weight: 800;
            color: #0f172a;
            margin-bottom: 24px;
            letter-spacing: -0.02em;
            word-break: break-word;
        }

        .eztx-hero-subtitle {
            font-size: clamp(1.1rem, 1.5vw + 0.5rem, 1.4rem);
            color: var(--eztx-text-muted);
            margin-bottom: 48px;
            max-width: 600px;
            word-break: break-word;
        }

        .eztx-hero-visual {
            flex: 1 1 400px;
            min-width: 0;
            position: relative;
        }

        /* 模拟Excel网格视觉 */
        .eztx-grid-visual {
            background: var(--eztx-white);
            border-radius: var(--eztx-radius);
            box-shadow: var(--eztx-shadow);
            padding: 24px;
            border: 1px solid rgba(0,0,0,0.05);
            transform: perspective(1000px) rotateY(-5deg) rotateX(5deg);
            transition: transform 0.5s ease;
        }

        .eztx-grid-visual:hover {
            transform: perspective(1000px) rotateY(0deg) rotateX(0deg);
        }

        /* 下载卡片 */
        .eztx-download-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-top: 32px;
        }

        .eztx-btn-main {
            background: var(--eztx-primary);
            color: white;
            padding: 18px 42px;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 600;
            font-size: 18px;
            box-shadow: 0 10px 20px rgba(33, 163, 102, 0.3);
            transition: all 0.3s;
            border: none;
            cursor: pointer;
        }

        .eztx-btn-main:hover {
            transform: translateY(-3px);
            box-shadow: 0 15px 30px rgba(33, 163, 102, 0.4);
            background: var(--eztx-primary-dark);
        }

        /* 协作引擎能力区块 */
        .eztx-engine-section {
            padding: 96px 0;
            background: #ffffff;
        }

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

        .eztx-tag {
            display: inline-block;
            padding: 4px 16px;
            background: rgba(33, 163, 102, 0.1);
            color: var(--eztx-primary);
            border-radius: 20px;
            font-size: 14px;
            font-weight: 700;
            margin-bottom: 16px;
        }

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

        .eztx-engine-card {
            background: #f8fafc;
            border-radius: var(--eztx-radius);
            padding: 40px;
            transition: all 0.3s;
            border: 1px solid transparent;
            min-width: 0;
        }

        .eztx-engine-card:hover {
            background: #ffffff;
            border-color: var(--eztx-primary);
            box-shadow: var(--eztx-shadow);
            transform: translateY(-8px);
        }

        .eztx-card-icon {
            width: 48px;
            height: 48px;
            background: var(--eztx-primary);
            border-radius: 12px;
            margin-bottom: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-weight: bold;
        }

        .eztx-card-title {
            font-size: 24px;
            margin-bottom: 16px;
            color: #0f172a;
        }

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

        .eztx-metrics {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            border-top: 1px solid rgba(0,0,0,0.05);
            padding-top: 24px;
        }

        .eztx-metric-item {
            flex: 1 1 120px;
            min-width: 0;
        }

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

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

        /* 动态内容区标记 */
        .eztx-dynamic-section {
            padding: 80px 0;
            background: #f1f5f9;
        }

        /* 页脚 */
        .eztx-footer {
            background: #0f172a;
            color: rgba(255,255,255,0.7);
            padding: 80px 0 40px;
        }

        .eztx-footer-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
            justify-content: space-between;
            margin-bottom: 64px;
        }

        .eztx-footer-brand {
            flex: 1 1 300px;
            min-width: 0;
        }

        .eztx-brand-name {
            color: white;
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 20px;
        }

        .eztx-footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
        }

        .eztx-footer-group {
            min-width: 120px;
        }

        .eztx-footer-group h4 {
            color: white;
            margin-bottom: 20px;
            font-size: 16px;
        }

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

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

        .eztx-footer-group a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s;
        }

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

        .eztx-copyright {
            text-align: center;
            padding-top: 40px;
            border-top: 1px solid rgba(255,255,255,0.1);
            font-size: 14px;
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .eztx-nav-wrapper {
                height: auto;
                padding: 16px;
            }
            .eztx-nav-menu {
                display: none; /* 简化移动端展示 */
            }
            .eztx-hero {
                padding: 120px 0 64px;
            }
            .eztx-hero-visual {
                display: none;
            }
            .eztx-grid-layout {
                grid-template-columns: 1fr;
            }
        }

        /* 特效辅助 */
        .eztx-bg-pattern {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: radial-gradient(#21a366 0.5px, transparent 0.5px);
            background-size: 32px 32px;
            opacity: 0.1;
            z-index: 1;
        }