diff --git a/packages/vant/docs/markdown/home.en-US.md b/packages/vant/docs/markdown/home.en-US.md
index 7eb6d3f8e..5df31c555 100644
--- a/packages/vant/docs/markdown/home.en-US.md
+++ b/packages/vant/docs/markdown/home.en-US.md
@@ -1,4 +1,4 @@
-<div class="card">
+<div class="van-doc-card">
   <div class="van-doc-intro">
     <img class="van-doc-intro__logo" style="width: 120px; height: 120px;" src="https://img.yzcdn.cn/vant/logo.png">
     <h2 style="margin: 0; font-size: 36px; line-height: 60px;">Vant</h2>
diff --git a/packages/vant/docs/markdown/home.zh-CN.md b/packages/vant/docs/markdown/home.zh-CN.md
index 3a1154e29..de1c5b4c0 100644
--- a/packages/vant/docs/markdown/home.zh-CN.md
+++ b/packages/vant/docs/markdown/home.zh-CN.md
@@ -1,4 +1,4 @@
-<div class="card">
+<div class="van-doc-card">
   <div class="van-doc-intro">
     <img class="van-doc-intro__logo" style="width: 120px; height: 120px;" src="https://img.yzcdn.cn/vant/logo.png">
     <h2 style="margin: 0; font-size: 36px; line-height: 60px;">Vant</h2>
diff --git a/packages/vant/docs/site/demo-locale.js b/packages/vant/docs/site/demo-locale.js
deleted file mode 100644
index fa7855fbe..000000000
--- a/packages/vant/docs/site/demo-locale.js
+++ /dev/null
@@ -1,79 +0,0 @@
-import Locale from '../../src/locale';
-import enUS from '../../src/locale/lang/en-US';
-
-export function initDemoLocale() {
-  Locale.add({
-    'en-US': enUS,
-  });
-
-  // switch lang after routing
-  if (window.vueRouter) {
-    window.vueRouter.afterEach((to) => {
-      const { lang } = to.meta || {};
-
-      if (lang) {
-        Locale.use(lang);
-      }
-    });
-  }
-
-  // add some basic locale messages
-  Locale.add({
-    'zh-CN': {
-      add: '增加',
-      decrease: '减少',
-      red: '红色',
-      orange: '橙色',
-      yellow: '黄色',
-      purple: '紫色',
-      tab: '标签',
-      tag: '标签',
-      desc: '描述信息',
-      back: '返回',
-      title: '标题',
-      status: '状态',
-      button: '按钮',
-      option: '选项',
-      search: '搜索',
-      content: '内容',
-      custom: '自定义',
-      username: '用户名',
-      password: '密码',
-      disabled: '禁用状态',
-      uneditable: '不可编辑',
-      basicUsage: '基础用法',
-      advancedUsage: '高级用法',
-      loadingStatus: '加载状态',
-      usernamePlaceholder: '请输入用户名',
-      passwordPlaceholder: '请输入密码',
-    },
-    'en-US': {
-      add: 'Add',
-      decrease: 'Decrease',
-      red: 'Red',
-      orange: 'Orange',
-      yellow: 'Yellow',
-      purple: 'Purple',
-      tab: 'Tab',
-      tag: 'Tag',
-      desc: 'Description',
-      back: 'Back',
-      title: 'Title',
-      status: 'Status',
-      button: 'Button',
-      option: 'Option',
-      search: 'Search',
-      content: 'Content',
-      custom: 'Custom',
-      username: 'Username',
-      password: 'Password',
-      loadingStatus: 'Loading',
-      disabled: 'Disabled',
-      uneditable: 'Uneditable',
-      basicUsage: 'Basic Usage',
-      advancedUsage: 'Advanced Usage',
-      usernamePlaceholder: 'Username',
-      passwordPlaceholder: 'Password',
-    },
-  });
-}
diff --git a/packages/vant/docs/site/entry.js b/packages/vant/docs/site/entry.js
deleted file mode 100644
index 4220c3dc6..000000000
--- a/packages/vant/docs/site/entry.js
+++ /dev/null
@@ -1,11 +0,0 @@
-import { initDemoLocale } from './demo-locale';
-import Lazyload from '../../src/lazyload';
-
-initDemoLocale();
-
-const { app } = window;
-if (app) {
-  app.use(Lazyload, {
-    lazyComponent: true,
-  });
-}
diff --git a/packages/vant/docs/site/use-translate.ts b/packages/vant/docs/site/use-translate.ts
index 032e1dee2..ec122e425 100644
--- a/packages/vant/docs/site/use-translate.ts
+++ b/packages/vant/docs/site/use-translate.ts
@@ -1,6 +1,95 @@
 import Locale from '../../src/locale';
+import enUS from '../../src/locale/lang/en-US';
 import { camelize } from '../../src/utils/format/string';
 import { createTranslate } from '../../src/utils/create/translate';
+import type { App } from 'vue';
+import type { Router } from 'vue-router';
+
+declare global {
+  interface Window {
+    app: App;
+    vueRouter: Router;
+  }
+}
+
+export function initDemoLocale() {
+  Locale.add({
+    'en-US': enUS,
+  });
+
+  // switch lang after routing
+  if (window.vueRouter) {
+    window.vueRouter.afterEach((to) => {
+      const { lang } = to.meta || {};
+
+      if (lang) {
+        Locale.use(lang as string);
+      }
+    });
+  }
+
+  // add some basic locale messages
+  Locale.add({
+    'zh-CN': {
+      add: '增加',
+      decrease: '减少',
+      red: '红色',
+      orange: '橙色',
+      yellow: '黄色',
+      purple: '紫色',
+      tab: '标签',
+      tag: '标签',
+      desc: '描述信息',
+      back: '返回',
+      title: '标题',
+      status: '状态',
+      button: '按钮',
+      option: '选项',
+      search: '搜索',
+      content: '内容',
+      custom: '自定义',
+      username: '用户名',
+      password: '密码',
+      disabled: '禁用状态',
+      uneditable: '不可编辑',
+      basicUsage: '基础用法',
+      advancedUsage: '高级用法',
+      loadingStatus: '加载状态',
+      usernamePlaceholder: '请输入用户名',
+      passwordPlaceholder: '请输入密码',
+    },
+    'en-US': {
+      add: 'Add',
+      decrease: 'Decrease',
+      red: 'Red',
+      orange: 'Orange',
+      yellow: 'Yellow',
+      purple: 'Purple',
+      tab: 'Tab',
+      tag: 'Tag',
+      desc: 'Description',
+      back: 'Back',
+      title: 'Title',
+      status: 'Status',
+      button: 'Button',
+      option: 'Option',
+      search: 'Search',
+      content: 'Content',
+      custom: 'Custom',
+      username: 'Username',
+      password: 'Password',
+      loadingStatus: 'Loading',
+      disabled: 'Disabled',
+      uneditable: 'Uneditable',
+      basicUsage: 'Basic Usage',
+      advancedUsage: 'Advanced Usage',
+      usernamePlaceholder: 'Username',
+      passwordPlaceholder: 'Password',
+    },
+  });
+}
+
+initDemoLocale();
 
 let demoUid = 0;
 
diff --git a/packages/vant/jest.config.js b/packages/vant/jest.config.js
index fdc554260..90ea75444 100644
--- a/packages/vant/jest.config.js
+++ b/packages/vant/jest.config.js
@@ -6,7 +6,4 @@ module.exports = {
     '!**/test/**',
     '!**/lang/**',
   ],
-  moduleNameMapper: {
-    '^@demo(.*)$': '<rootDir>/docs/site$1',
-  },
 };
diff --git a/packages/vant/src/lazyload/demo/index.vue b/packages/vant/src/lazyload/demo/index.vue
index 0651f7488..cdb5fed26 100644
--- a/packages/vant/src/lazyload/demo/index.vue
+++ b/packages/vant/src/lazyload/demo/index.vue
@@ -1,6 +1,11 @@
 <script setup lang="ts">
+import Lazyload from '..';
 import { useTranslate } from '../../../docs/site/use-translate';
 
+if (window.app) {
+  window.app.use(Lazyload, { lazyComponent: true });
+}
+
 const t = useTranslate({
   'zh-CN': {
     title2: '背景图懒加载',