/* 基础重置与变量 */
        :root {
            --eztx-primary: #D33333;
            --eztx-secondary: #2D3436;
            --eztx-accent: #0066FF;
            --eztx-bg-light: #F8F9FA;
            --eztx-text-main: #1D1D1F;
            --eztx-text-muted: #636E72;
            --eztx-white: #FFFFFF;
            --eztx-max-width: 1300px;
            --eztx-shadow: 0 10px 30px rgba(0,0,0,0.08);
            --eztx-radius: 16px;
        }

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

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

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: all 0.3s ease;
        }

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

        /* 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(20px);
            border-bottom: 1px solid rgba(0,0,0,0.05);
        }

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

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

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

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

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

        .eztx-nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--eztx-text-main);
            padding: 8px 4px;
            position: relative;
        }

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

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

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

        /* Hero 区域 - 创意不对称布局 */
        .eztx-hero {
            padding-top: 140px;
            padding-bottom: 96px;
            background: radial-gradient(circle at top right, #FFF5F5 0%, #FFFFFF 100%);
            overflow: hidden;
        }

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

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

        .eztx-hero-title {
            font-size: clamp(1.8rem, 4vw + 1rem, 3.5rem);
            line-height: 1.2;
            font-weight: 800;
            margin-bottom: 24px;
            color: var(--eztx-secondary);
        }

        .eztx-hero-subtitle {
            font-size: clamp(1rem, 1vw + 0.8rem, 1.35rem);
            color: var(--eztx-text-muted);
            margin-bottom: 40px;
            max-width: 600px;
        }

        .eztx-hero-image-box {
            flex: 1.2;
            min-width: 320px;
            position: relative;
        }

        .eztx-hero-main-img {
            border-radius: var(--eztx-radius);
            box-shadow: 0 30px 60px rgba(0,0,0,0.12);
            transform: perspective(1000px) rotateY(-5deg);
            transition: transform 0.5s ease;
        }

        .eztx-hero-main-img:hover {
            transform: perspective(1000px) rotateY(0deg);
        }

        .eztx-btn-group {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }

        .eztx-btn {
            display: inline-block;
            padding: 14px 36px;
            border-radius: 50px;
            font-weight: 600;
            text-align: center;
            cursor: pointer;
            transition: transform 0.2s, box-shadow 0.2s;
        }

        .eztx-btn-primary {
            background: var(--eztx-primary);
            color: var(--eztx-white);
            box-shadow: 0 8px 20px rgba(211, 51, 51, 0.25);
        }

        .eztx-btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 25px rgba(211, 51, 51, 0.35);
        }

        /* AI 智能展示区 */
        .eztx-section-ai {
            padding: 96px 0;
            background-color: #0F172A;
            color: var(--eztx-white);
        }

        .eztx-split-layout {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 64px;
        }

        .eztx-split-text {
            flex: 1;
            min-width: 300px;
        }

        .eztx-split-visual {
            flex: 1;
            min-width: 300px;
        }

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

        .eztx-ai-title {
            font-size: clamp(1.5rem, 2.5vw + 1rem, 2.5rem);
            margin-bottom: 24px;
        }

        .eztx-ai-img {
            border-radius: var(--eztx-radius);
            filter: drop-shadow(0 0 20px rgba(0, 102, 255, 0.3));
        }

        /* 协作引擎 - Grid 布局 */
        .eztx-section-engine {
            padding: 96px 0;
            background-color: var(--eztx-bg-light);
        }

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

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

        .eztx-engine-card {
            background: var(--eztx-white);
            padding: 40px;
            border-radius: var(--eztx-radius);
            box-shadow: var(--eztx-shadow);
            transition: transform 0.3s ease;
            display: flex;
            flex-direction: column;
            height: 100%;
        }

        .eztx-engine-card:hover {
            transform: translateY(-10px);
        }

        .eztx-engine-name {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--eztx-secondary);
        }

        .eztx-engine-tech {
            font-size: 0.95rem;
            color: var(--eztx-text-muted);
            margin-bottom: 20px;
            padding-bottom: 20px;
            border-bottom: 1px solid #EEE;
        }

        .eztx-metric-row {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: auto;
        }

        .eztx-metric-tag {
            background: #F0F4FF;
            color: var(--eztx-accent);
            padding: 4px 12px;
            border-radius: 4px;
            font-size: 0.85rem;
            font-weight: 600;
        }

        /* 云同步区块 - 图文交替 */
        .eztx-section-cloud {
            padding: 96px 0;
        }

        .eztx-cloud-reverse {
            flex-direction: row-reverse;
        }

        /* 技巧/动态区 */
        .eztx-section-dynamic {
            padding: 96px 0;
            background: #fff;
        }

        /* 页脚 */
        .eztx-footer {
            background: #1A1A1A;
            color: #999;
            padding: 80px 0 40px;
        }

        .eztx-footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 48px;
            margin-bottom: 64px;
        }

        .eztx-footer-brand {
            grid-column: span 2;
        }

        .eztx-footer-brand-name {
            color: var(--eztx-white);
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 20px;
            display: block;
        }

        .eztx-footer-title {
            color: var(--eztx-white);
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 24px;
        }

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

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

        .eztx-footer-links a:hover {
            color: var(--eztx-white);
        }

        .eztx-copyright {
            text-align: center;
            padding-top: 40px;
            border-top: 1px solid #333;
            font-size: 0.85rem;
        }

        /* 响应式调整 */
        @media (max-width: 992px) {
            .eztx-hero-grid {
                flex-direction: column;
                text-align: center;
            }
            .eztx-hero-subtitle {
                margin-left: auto;
                margin-right: auto;
            }
            .eztx-btn-group {
                justify-content: center;
            }
            .eztx-footer-brand {
                grid-column: span 1;
            }
        }

        @media (max-width: 768px) {
            .eztx-nav-menu {
                display: none; /* 简化演示，实际可增加汉堡菜单 */
            }
            .eztx-section-ai, .eztx-section-cloud, .eztx-section-engine {
                padding: 64px 0;
            }
        }