:root {
            --eztx-primary: #D44027;
            --eztx-primary-light: #FFEDE9;
            --eztx-dark: #1E1E1E;
            --eztx-gray-100: #F8F9FA;
            --eztx-gray-200: #E9ECEF;
            --eztx-gray-600: #6C757D;
            --eztx-white: #FFFFFF;
            --eztx-shadow: 0 4px 20px rgba(0,0,0,0.08);
            --eztx-radius: 12px;
            --eztx-container-width: 1300px;
        }

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

        body {
            font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
            background-color: var(--eztx-gray-100);
            color: var(--eztx-dark);
            line-height: 1.6;
            overflow-x: hidden;
        }

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

        .eztx-flex {
            display: flex;
            flex-wrap: wrap;
        }

        .eztx-grid {
            display: grid;
            gap: 24px;
        }

        /* 导航栏 */
        .eztx-navbar {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 72px;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            z-index: 1000;
            border-bottom: 1px solid var(--eztx-gray-200);
            display: flex;
            align-items: center;
        }

        .eztx-nav-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
            width: 100%;
            max-width: var(--eztx-container-width);
            margin: 0 auto;
            padding: 0 24px;
            flex-wrap: wrap;
        }

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

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

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

        .eztx-nav-item a {
            text-decoration: none;
            color: var(--eztx-dark);
            font-size: 15px;
            padding: 8px 16px;
            border-radius: 6px;
            transition: all 0.3s ease;
            white-space: nowrap;
        }

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

        .eztx-nav-item.active a {
            background: var(--eztx-primary);
            color: var(--eztx-white);
            font-weight: 600;
        }

        /* Hero 区块 - 独特非对称布局 */
        .eztx-hero {
            padding-top: 160px;
            padding-bottom: 80px;
            background: linear-gradient(135deg, #fff 0%, #fff5f3 100%);
            position: relative;
            overflow: hidden;
        }

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

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

        .eztx-hero-title {
            font-size: clamp(2rem, 5vw, 3.5rem);
            line-height: 1.2;
            color: var(--eztx-dark);
            margin-bottom: 24px;
            font-weight: 800;
        }

        .eztx-hero-subtitle {
            font-size: clamp(1rem, 2vw + 0.5rem, 1.25rem);
            color: var(--eztx-gray-600);
            margin-bottom: 32px;
            max-width: 600px;
        }

        .eztx-hero-search {
            background: var(--eztx-white);
            padding: 8px;
            border-radius: 16px;
            box-shadow: 0 10px 40px rgba(212, 64, 39, 0.1);
            display: flex;
            max-width: 500px;
            border: 2px solid transparent;
            transition: border-color 0.3s;
        }

        .eztx-hero-search:focus-within {
            border-color: var(--eztx-primary);
        }

        .eztx-hero-search input {
            flex: 1;
            border: none;
            padding: 12px 20px;
            outline: none;
            font-size: 16px;
            background: transparent;
        }

        .eztx-hero-search button {
            background: var(--eztx-primary);
            color: var(--eztx-white);
            border: none;
            padding: 12px 32px;
            border-radius: 12px;
            cursor: pointer;
            font-weight: 600;
            transition: opacity 0.3s;
        }

        /* 快捷键导航卡片 */
        .eztx-category-strip {
            margin-top: -40px;
            position: relative;
            z-index: 10;
        }

        .eztx-strip-inner {
            background: var(--eztx-white);
            border-radius: 20px;
            padding: 32px;
            box-shadow: var(--eztx-shadow);
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 24px;
        }

        .eztx-strip-card {
            padding: 24px;
            border-radius: 16px;
            background: var(--eztx-gray-100);
            text-decoration: none;
            color: inherit;
            transition: transform 0.3s, background 0.3s;
            border: 1px solid var(--eztx-gray-200);
            min-width: 0;
        }

        .eztx-strip-card:hover {
            transform: translateY(-5px);
            background: var(--eztx-primary-light);
            border-color: var(--eztx-primary);
        }

        .eztx-strip-card h3 {
            margin-bottom: 8px;
            color: var(--eztx-primary);
        }

        /* 快捷键列表核心区 */
        .eztx-shortcut-section {
            padding: 96px 0;
        }

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

        .eztx-section-title {
            font-size: clamp(1.5rem, 3vw, 2.5rem);
            margin-bottom: 16px;
        }

        .eztx-shortcut-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 32px;
        }

        .eztx-shortcut-group {
            background: var(--eztx-white);
            padding: 32px;
            border-radius: var(--eztx-radius);
            box-shadow: 0 2px 10px rgba(0,0,0,0.03);
            border: 1px solid var(--eztx-gray-200);
            min-width: 0;
        }

        .eztx-shortcut-group h4 {
            font-size: 1.25rem;
            margin-bottom: 24px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--eztx-primary-light);
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .eztx-shortcut-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 12px 0;
            border-bottom: 1px dashed var(--eztx-gray-200);
            word-break: keep-all;
        }

        .eztx-shortcut-item:last-child {
            border-bottom: none;
        }

        .eztx-shortcut-desc {
            color: var(--eztx-gray-600);
            font-size: 15px;
        }

        .eztx-kbd-wrapper {
            display: flex;
            gap: 4px;
        }

        .eztx-kbd {
            background: var(--eztx-gray-100);
            border: 1px solid var(--eztx-gray-200);
            border-radius: 4px;
            box-shadow: 0 2px 0 var(--eztx-gray-200);
            color: var(--eztx-dark);
            display: inline-block;
            font-size: 12px;
            font-weight: 700;
            line-height: 1;
            padding: 4px 8px;
            white-space: nowrap;
        }

        /* AI & 协作能力区块 */
        .eztx-capabilities {
            padding: 96px 0;
            background: var(--eztx-dark);
            color: var(--eztx-white);
        }

        .eztx-cap-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
            gap: 48px;
        }

        .eztx-cap-card {
            background: rgba(255,255,255,0.05);
            padding: 40px;
            border-radius: 24px;
            border: 1px solid rgba(255,255,255,0.1);
            min-width: 0;
        }

        .eztx-cap-badge {
            display: inline-block;
            padding: 4px 12px;
            background: var(--eztx-primary);
            border-radius: 20px;
            font-size: 12px;
            margin-bottom: 20px;
        }

        .eztx-cap-title {
            font-size: 24px;
            margin-bottom: 16px;
        }

        .eztx-cap-desc {
            color: #aaa;
            margin-bottom: 24px;
            font-size: 16px;
        }

        .eztx-cap-metrics {
            display: flex;
            gap: 20px;
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 24px;
        }

        .eztx-metric-item span {
            display: block;
            font-size: 18px;
            font-weight: 700;
            color: var(--eztx-primary);
        }

        .eztx-metric-item label {
            font-size: 12px;
            color: #777;
        }

        /* 资讯区块 */
        .eztx-news-section {
            padding: 96px 0;
        }

        /* 页脚 */
        .eztx-footer {
            background: var(--eztx-white);
            padding: 80px 0 40px;
            border-top: 1px solid var(--eztx-gray-200);
        }

        .eztx-footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 40px;
            margin-bottom: 60px;
        }

        .eztx-footer-brand h2 {
            font-size: 1.25rem;
            margin-bottom: 16px;
            color: var(--eztx-primary);
        }

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

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

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

        .eztx-footer-links a {
            color: var(--eztx-gray-600);
            text-decoration: none;
            transition: color 0.3s;
        }

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

        .eztx-copyright {
            text-align: center;
            padding-top: 40px;
            border-top: 1px solid var(--eztx-gray-200);
            color: var(--eztx-gray-600);
            font-size: 14px;
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .eztx-hero-inner {
                flex-direction: column;
                text-align: center;
            }

            .eztx-hero-search {
                margin: 0 auto;
            }

            .eztx-nav-menu {
                display: none; /* 简化移动端，实际应有汉堡菜单 */
            }

            .eztx-cap-grid {
                grid-template-columns: 1fr;
            }

            .eztx-shortcut-grid {
                grid-template-columns: 1fr;
            }
        }