/* 基础样式复位 */
        * { margin: 0; padding: 0; box-sizing: border-box; }
        body { 
            font-family: "PingFang SC", "Microsoft YaHei", sans-serif; 
            color: #1d1d1f; 
            line-height: 1.7; 
            background-color: #ffffff;
            overflow-x: hidden;
        }

        /* 变量与通用类 */
        :root {
            --et2-primary: #ee4122;
            --et2-primary-hover: #d63a1e;
            --et2-dark: #121212;
            --et2-gray: #f5f5f7;
            --et2-text-muted: #86868b;
        }

        .et2-zongchi {
            max-width: 1320px;
            margin: 0 auto;
            padding: 0 32px;
            width: 100%;
        }

        /* 导航区域 - pinyin (Nav Area) */
        .et2-pinyin {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 72px;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: saturate(180%) blur(20px);
            z-index: 9999;
            border-bottom: 1px solid rgba(0,0,0,0.05);
            display: flex;
            align-items: center;
        }

        .et2-pinyin .et2-zongchi {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
        }

        .et2-logo {
            flex-shrink: 0;
            min-width: 0;
            height: 32px;
        }

        .et2-logo img {
            height: 100%;
            display: block;
        }

        .et2-cangku {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 40px;
            align-items: center;
        }

        .et2-yousuo {
            text-decoration: none;
            color: #1d1d1f;
            font-size: 16px;
            font-weight: 500;
            transition: color 0.3s ease;
            position: relative;
        }

        .et2-yousuo:hover {
            color: var(--et2-primary);
        }

        .et2-yousuo.et2-active {
            color: var(--et2-primary);
        }

        .et2-yousuo.et2-active::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--et2-primary);
        }

        /* 展示区域 - zhantai (Hero Section) */
        .et2-zhantai {
            position: relative;
            padding-top: 160px;
            padding-bottom: 96px;
            background: linear-gradient(180deg, #fdfdfd 0%, #f5f5f7 100%);
            overflow: hidden;
        }

        .et2-zhantai .et2-zongchi {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 64px;
        }

        .et2-jujiao {
            flex: 1;
            min-width: 320px;
            word-break: break-word;
        }

        .et2-jujiao h1 {
            font-size: clamp(2.5rem, 5vw + 1rem, 4rem);
            line-height: 1.1;
            font-weight: 700;
            margin-bottom: 24px;
            letter-spacing: -0.02em;
            color: var(--et2-dark);
        }

        .et2-jujiao p {
            font-size: clamp(1.1rem, 1vw + 0.8rem, 1.4rem);
            color: var(--et2-text-muted);
            margin-bottom: 48px;
            max-width: 600px;
        }

        .et2-pifu {
            flex: 1.2;
            min-width: 320px;
            position: relative;
        }

        .et2-pifu img {
            width: 100%;
            height: auto;
            border-radius: 24px;
            box-shadow: 0 32px 64px rgba(0,0,0,0.1);
            transition: transform 0.5s cubic-bezier(0.2, 0.8, 0.2, 1);
        }

        .et2-pifu:hover img {
            transform: scale(1.02);
        }

        /* 按钮组件 - qiaoji / shuru */
        .et2-qiaoji {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 18px 48px;
            background-color: var(--et2-primary);
            color: #ffffff;
            text-decoration: none;
            border-radius: 50px;
            font-size: 18px;
            font-weight: 600;
            transition: all 0.3s ease;
            box-shadow: 0 8px 24px rgba(238, 65, 34, 0.3);
        }

        .et2-qiaoji:hover {
            background-color: var(--et2-primary-hover);
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(238, 65, 34, 0.4);
        }

        .et2-shuru {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 18px 48px;
            background-color: transparent;
            color: var(--et2-dark);
            text-decoration: none;
            border-radius: 50px;
            font-size: 18px;
            font-weight: 600;
            border: 2px solid #d2d2d7;
            margin-left: 24px;
            transition: all 0.3s ease;
        }

        .et2-shuru:hover {
            border-color: var(--et2-dark);
            background-color: rgba(0,0,0,0.02);
        }

        /* 核心功能区 - wenku */
        .et2-wenku {
            padding: 120px 0;
            background-color: #ffffff;
        }

        .et2-wenku[data-dynamic-content="latest-articles"] {
            background-color: #fbfbfb;
        }

        .et2-wenku .et2-zongchi {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
            gap: 48px;
        }

        /* 卡片组件 - cihui / houxuan */
        .et2-cihui {
            background: #ffffff;
            border-radius: 32px;
            overflow: hidden;
            transition: all 0.4s ease;
            border: 1px solid #f0f0f0;
            display: flex;
            flex-direction: column;
            min-width: 0;
        }

        .et2-cihui:hover {
            transform: translateY(-12px);
            box-shadow: 0 40px 80px rgba(0,0,0,0.08);
            border-color: transparent;
        }

        .et2-cihui img {
            width: 100%;
            height: 280px;
            object-fit: cover;
            transition: transform 0.6s ease;
        }

        .et2-cihui:hover img {
            transform: scale(1.05);
        }

        .et2-houxuan {
            padding: 40px;
            flex-grow: 1;
            word-break: keep-all;
        }

        .et2-houxuan h3 {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--et2-dark);
        }

        .et2-houxuan p {
            font-size: 16px;
            color: var(--et2-text-muted);
            line-height: 1.8;
        }

        /* 强调文字区块 */
        .et2-wenku-title {
            text-align: center;
            margin-bottom: 80px;
            width: 100%;
        }

        .et2-wenku-title h2 {
            font-size: clamp(2rem, 3vw + 1rem, 3rem);
            font-weight: 700;
            color: var(--et2-dark);
            margin-bottom: 16px;
        }

        /* 页脚区域 - shouwei / diwen */
        .et2-shouwei {
            background-color: var(--et2-dark);
            color: #ffffff;
            padding: 96px 0 48px;
        }

        .et2-shouwei .et2-zongchi {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 64px;
        }

        .et2-cangku-footer {
            flex: 1;
            min-width: 200px;
        }

        .et2-cangku-footer h4 {
            font-size: 18px;
            margin-bottom: 32px;
            font-weight: 600;
            color: #ffffff;
        }

        .et2-cangku-footer ul {
            list-style: none;
        }

        .et2-cangku-footer ul li {
            margin-bottom: 16px;
        }

        .et2-cangku-footer ul li a {
            color: #a1a1a6;
            text-decoration: none;
            transition: color 0.3s ease;
            font-size: 14px;
        }

        .et2-cangku-footer ul li a:hover {
            color: #ffffff;
        }

        .et2-diwen {
            margin-top: 80px;
            padding-top: 32px;
            border-top: 1px solid #333;
            width: 100%;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            color: #86868b;
            font-size: 13px;
        }

        .et2-brand-text {
            font-size: 24px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            display: block;
        }

        /* 响应式适配 */
        @media (max-width: 992px) {
            .et2-pifu { order: -1; }
            .et2-jujiao { text-align: center; }
            .et2-jujiao p { margin: 0 auto 48px; }
            .et2-shuru { margin-left: 0; margin-top: 16px; }
        }

        @media (max-width: 768px) {
            .et2-zongchi { padding: 0 24px; }
            .et2-wenku .et2-zongchi { grid-template-columns: 1fr; }
            .et2-pinyin .et2-cangku { display: none; } /* 移动端隐藏菜单，可由JS扩展 */
            .et2-zhantai { padding-top: 120px; }
            .et2-qiaoji, .et2-shuru { width: 100%; }
        }