:root {
            --eztx-primary: #D32F2F;
            --eztx-primary-light: #FFEBEE;
            --eztx-accent: #1A73E8;
            --eztx-text-main: #202124;
            --eztx-text-muted: #5F6368;
            --eztx-bg-gradient: linear-gradient(135deg, #f8f9fa 0%, #e8eaed 100%);
            --eztx-glass: rgba(255, 255, 255, 0.85);
            --eztx-max-width: 1400px;
        }

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

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

        /* 导航栏设计 */
        .eztx-header {
            position: sticky;
            top: 0;
            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-container {
            max-width: var(--eztx-max-width);
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            height: 72px;
        }

        .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: 16px;
            min-width: 0;
        }

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

        .eztx-nav-link {
            text-decoration: none;
            color: var(--eztx-text-main);
            font-size: 15px;
            font-weight: 500;
            padding: 8px 12px;
            border-radius: 6px;
            transition: all 0.2s;
            white-space: nowrap;
        }

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

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

        .eztx-nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -4px;
            left: 12px;
            right: 12px;
            height: 3px;
            background: var(--eztx-primary);
            border-radius: 2px;
        }

        /* Hero 区 - 悬浮卡片式布局 */
        .eztx-hero {
            position: relative;
            padding: 96px 24px;
            background: radial-gradient(circle at 70% 30%, #fff0f0 0%, #ffffff 100%);
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            align-items: center;
            text-align: center;
            min-height: 80vh;
        }

        .eztx-hero-content {
            max-width: 900px;
            width: 100%;
            min-width: 0;
        }

        .eztx-hero-title {
            font-size: clamp(2.5rem, 5vw + 1rem, 4.5rem);
            line-height: 1.1;
            font-weight: 800;
            margin-bottom: 24px;
            color: #1a1a1a;
            word-break: keep-all;
        }

        .eztx-hero-subtitle {
            font-size: clamp(1.1rem, 2vw + 0.5rem, 1.5rem);
            color: var(--eztx-text-muted);
            margin-bottom: 48px;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
        }

        /* 转换核心交互组件 */
        .eztx-converter-wrapper {
            background: #ffffff;
            border-radius: 24px;
            padding: 48px;
            box-shadow: 0 20px 50px rgba(0,0,0,0.08);
            border: 1px solid rgba(0,0,0,0.03);
            margin-top: 32px;
            position: relative;
            transition: transform 0.3s ease;
        }

        .eztx-converter-wrapper:hover {
            transform: translateY(-5px);
        }

        .eztx-drop-zone {
            border: 2px dashed #e0e0e0;
            border-radius: 16px;
            padding: 64px 24px;
            background: #fafafa;
            cursor: pointer;
            transition: all 0.3s;
        }

        .eztx-drop-zone:hover {
            border-color: var(--eztx-primary);
            background: var(--eztx-primary-light);
        }

        .eztx-upload-icon {
            width: 80px;
            height: 80px;
            margin: 0 auto 24px;
            background: var(--eztx-primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 32px;
        }

        .eztx-btn-primary {
            display: inline-block;
            background: var(--eztx-primary);
            color: white;
            padding: 18px 48px;
            border-radius: 50px;
            font-size: 18px;
            font-weight: 600;
            text-decoration: none;
            transition: all 0.3s;
            box-shadow: 0 10px 20px rgba(211, 47, 47, 0.2);
            margin-top: 24px;
        }

        .eztx-btn-primary:hover {
            background: #b71c1c;
            transform: scale(1.02);
            box-shadow: 0 15px 30px rgba(211, 47, 47, 0.3);
        }

        /* 核心引擎能力区块 */
        .eztx-engine-section {
            padding: 96px 24px;
            max-width: var(--eztx-max-width);
            margin: 0 auto;
        }

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

        .eztx-section-title {
            font-size: clamp(2rem, 3vw, 3rem);
            margin-bottom: 16px;
            font-weight: 700;
        }

        .eztx-engine-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
            gap: 32px;
        }

        .eztx-engine-card {
            background: #ffffff;
            border-radius: 20px;
            padding: 40px;
            border: 1px solid #f0f0f0;
            transition: all 0.3s;
            display: flex;
            flex-direction: column;
            min-width: 0;
        }

        .eztx-engine-card:hover {
            box-shadow: 0 12px 24px rgba(0,0,0,0.05);
            border-color: var(--eztx-accent);
        }

        .eztx-engine-tag {
            display: inline-block;
            padding: 4px 12px;
            background: #e8f0fe;
            color: var(--eztx-accent);
            border-radius: 4px;
            font-size: 12px;
            font-weight: 700;
            margin-bottom: 16px;
            width: fit-content;
        }

        .eztx-engine-name {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .eztx-engine-desc {
            color: var(--eztx-text-muted);
            margin-bottom: 24px;
            font-size: 16px;
            line-height: 1.8;
        }

        .eztx-metrics-box {
            margin-top: auto;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            padding-top: 24px;
            border-top: 1px solid #f0f0f0;
        }

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

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

        .eztx-metric-value {
            font-weight: 700;
            color: var(--eztx-primary);
            font-size: 14px;
        }

        /* 场景展示区块 - 左右交替 */
        .eztx-feature-row {
            padding: 64px 24px;
            max-width: var(--eztx-max-width);
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 64px;
        }

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

        .eztx-feature-visual {
            flex: 1;
            min-width: 320px;
            background: var(--eztx-primary-light);
            height: 400px;
            border-radius: 32px;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            overflow: hidden;
        }

        /* 模拟视觉元素，代替图片 */
        .eztx-visual-shape {
            width: 200px;
            height: 260px;
            background: white;
            border-radius: 12px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
            position: relative;
            padding: 24px;
        }

        .eztx-visual-line {
            height: 8px;
            background: #f0f0f0;
            margin-bottom: 12px;
            border-radius: 4px;
        }

        .eztx-feature-text {
            flex: 1;
            min-width: 320px;
        }

        .eztx-feature-text h3 {
            font-size: 32px;
            margin-bottom: 24px;
            font-weight: 700;
        }

        /* 动态资讯区块 */
        .eztx-dynamic-section {
            background: #fafafa;
            padding: 96px 24px;
        }

        .eztx-article-grid {
            max-width: var(--eztx-max-width);
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 24px;
        }

        /* 页脚 */
        .eztx-footer {
            background: #1a1a1a;
            color: #ffffff;
            padding: 80px 24px 40px;
        }

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

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

        .eztx-brand-name {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 16px;
            display: block;
        }

        .eztx-footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 64px;
            min-width: 0;
        }

        .eztx-footer-group h4 {
            margin-bottom: 24px;
            color: #9aa0a6;
            font-size: 14px;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

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

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

        .eztx-footer-list a {
            color: #e8eaed;
            text-decoration: none;
            transition: color 0.2s;
        }

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

        .eztx-copyright {
            margin-top: 64px;
            padding-top: 32px;
            border-top: 1px solid rgba(255,255,255,0.1);
            text-align: center;
            color: #9aa0a6;
            font-size: 14px;
        }

        /* 响应式适配 */
        @media (max-width: 768px) {
            .eztx-nav-container {
                height: auto;
                padding: 16px;
            }
            .eztx-nav-menu {
                display: none; /* 简化移动端显示，实际应有汉堡菜单 */
            }
            .eztx-hero {
                padding: 64px 16px;
            }
            .eztx-converter-wrapper {
                padding: 24px;
            }
            .eztx-engine-grid {
                grid-template-columns: 1fr;
            }
            .eztx-feature-row {
                flex-direction: column !important;
                gap: 32px;
            }
        }