/* 基础变量与重置 */
        :root {
            --eztx-primary: #0660ff;
            --eztx-primary-light: #e6f0ff;
            --eztx-accent: #ff4d4f;
            --eztx-text-main: #1d1d1f;
            --eztx-text-sub: #424245;
            --eztx-bg-light: #f5f5f7;
            --eztx-white: #ffffff;
            --eztx-shadow: 0 10px 30px rgba(0,0,0,0.08);
            --eztx-radius: 16px;
            --eztx-container-width: 1100px;
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
            color: var(--eztx-text-main);
            background-color: var(--eztx-white);
            line-height: 1.6;
            overflow-x: hidden;
            word-break: keep-all;
        }

        /* 导航栏设计 */
        .eztx-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.8);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0,0,0,0.05);
        }

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

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

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

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

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

        .eztx-nav-item a:hover,
        .eztx-nav-item a.eztx-active {
            color: var(--eztx-primary);
        }

        /* Hero 区域：独特的非对称布局 */
        .eztx-hero {
            padding: 160px 24px 80px;
            background: radial-gradient(circle at 90% 10%, var(--eztx-primary-light) 0%, var(--eztx-white) 60%);
            overflow: hidden;
        }

        .eztx-hero-inner {
            max-width: var(--eztx-container-width);
            margin: 0 auto;
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 48px;
        }

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

        .eztx-hero-title {
            font-size: clamp(2rem, 4vw + 1rem, 3.5rem);
            line-height: 1.1;
            font-weight: 800;
            margin-bottom: 24px;
            background: linear-gradient(135deg, #1d1d1f 0%, #0660ff 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .eztx-hero-subtitle {
            font-size: clamp(1.1rem, 1.5vw + 0.5rem, 1.4rem);
            color: var(--eztx-text-sub);
            margin-bottom: 32px;
            max-width: 600px;
        }

        /* 教程步骤展示区 */
        .eztx-section {
            padding: 96px 24px;
            max-width: var(--eztx-container-width);
            margin: 0 auto;
        }

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

        .eztx-badge {
            display: inline-block;
            padding: 6px 16px;
            background: var(--eztx-primary-light);
            color: var(--eztx-primary);
            border-radius: 20px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 16px;
        }

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

        .eztx-step-card {
            background: var(--eztx-bg-light);
            padding: 40px;
            border-radius: var(--eztx-radius);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            position: relative;
            overflow: hidden;
            border: 1px solid rgba(0,0,0,0.03);
        }

        .eztx-step-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--eztx-shadow);
            background: var(--eztx-white);
        }

        .eztx-step-num {
            font-size: 64px;
            font-weight: 900;
            color: rgba(6, 96, 255, 0.1);
            position: absolute;
            top: 10px;
            right: 20px;
        }

        .eztx-step-card h3 {
            font-size: 24px;
            margin-bottom: 16px;
            color: var(--eztx-text-main);
        }

        .eztx-step-card p {
            color: var(--eztx-text-sub);
            font-size: 16px;
            margin-bottom: 24px;
        }

        /* 引擎能力展示区 - 独特样式 */
        .eztx-engine-box {
            background: #000;
            border-radius: 32px;
            padding: 64px;
            color: #fff;
            margin-top: 48px;
        }

        .eztx-engine-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            margin-top: 40px;
        }

        .eztx-engine-item {
            flex: 1;
            min-width: 280px;
            border-left: 2px solid var(--eztx-primary);
            padding-left: 24px;
        }

        .eztx-engine-name {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--eztx-primary-light);
        }

        .eztx-engine-highlight {
            font-size: 15px;
            color: #a1a1a6;
            margin-bottom: 20px;
        }

        .eztx-metric-tag {
            display: inline-block;
            background: rgba(255,255,255,0.1);
            padding: 4px 12px;
            border-radius: 4px;
            font-size: 12px;
            margin-right: 8px;
            margin-top: 8px;
        }

        /* 资讯区块 */
        .eztx-dynamic-news {
            background: var(--eztx-bg-light);
            border-radius: var(--eztx-radius);
            padding: 48px;
        }

        /* 页脚设计 */
        .eztx-footer {
            background: #fbfbfd;
            padding: 80px 24px 40px;
            border-top: 1px solid #d2d2d7;
        }

        .eztx-footer-inner {
            max-width: var(--eztx-container-width);
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 48px;
        }

        .eztx-footer-brand {
            flex: 1;
            min-width: 200px;
        }

        .eztx-footer-brand-name {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .eztx-footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
            flex: 2;
            min-width: 300px;
        }

        .eztx-footer-col h4 {
            font-size: 14px;
            margin-bottom: 20px;
            color: var(--eztx-text-main);
        }

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

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

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

        .eztx-copyright {
            max-width: var(--eztx-container-width);
            margin: 40px auto 0;
            padding-top: 24px;
            border-top: 1px solid #d2d2d7;
            font-size: 12px;
            color: #86868b;
            text-align: center;
        }

        /* 按钮样式 */
        .eztx-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 14px 32px;
            border-radius: 30px;
            font-weight: 600;
            text-decoration: none;
            transition: all 0.3s ease;
            cursor: pointer;
        }

        .eztx-btn-primary {
            background: var(--eztx-primary);
            color: #fff;
            box-shadow: 0 4px 15px rgba(6, 96, 255, 0.3);
        }

        .eztx-btn-primary:hover {
            background: #0052D9;
            transform: scale(1.02);
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .eztx-nav-list {
                display: none; /* 简化版移动端导航，实际开发中需配合汉堡菜单 */
            }
            .eztx-hero {
                padding-top: 120px;
                text-align: center;
            }
            .eztx-hero-inner {
                justify-content: center;
            }
            .eztx-hero-subtitle {
                margin-left: auto;
                margin-right: auto;
            }
            .eztx-engine-box {
                padding: 32px 24px;
            }
        }