diff --git a/apps/jingrow/frontend/src/app/layouts/AppSidebar.vue b/apps/jingrow/frontend/src/app/layouts/AppSidebar.vue
index 31b3013..1249d13 100644
--- a/apps/jingrow/frontend/src/app/layouts/AppSidebar.vue
+++ b/apps/jingrow/frontend/src/app/layouts/AppSidebar.vue
@@ -172,7 +172,7 @@ const handleMenuSelect = (key: string) => {
   display: flex;
   align-items: center;
   gap: 12px;
-  font-size: 20px;
+  font-size: 16px;
   font-weight: 700;
   color: #1f2937;
 }
diff --git a/apps/jingrow/frontend/src/views/HomePage.vue b/apps/jingrow/frontend/src/views/HomePage.vue
index db81476..08f9e33 100644
--- a/apps/jingrow/frontend/src/views/HomePage.vue
+++ b/apps/jingrow/frontend/src/views/HomePage.vue
@@ -1,12 +1,13 @@
 <script setup lang="ts">
 import { computed, ref, watch, onMounted, onUnmounted, nextTick, reactive } from 'vue'
-import { NButton, NSpace, useMessage, NModal, NForm, NFormItem, NInput, NText } from 'naive-ui'
+import { NButton, NSpace, useMessage, NModal, NForm, NFormItem, NInput, NText, NLayout, NLayoutSider, NLayoutHeader, NLayoutContent } from 'naive-ui'
 import { Icon } from '@iconify/vue'
 import { useSEO } from '@/shared/composables/useSEO'
 import { t } from '@/shared/i18n'
 import { useAuthStore } from '@/shared/stores/auth'
 import { signupApi } from '@/shared/api/auth'
-import UserMenu from '@/shared/components/UserMenu.vue'
+import AppHeader from '@/app/layouts/AppHeader.vue'
+import AppSidebar from '@/app/layouts/AppSidebar.vue'
 import { compressImageFile } from '@/shared/utils/imageResize'
 import axios from 'axios'
 
@@ -190,6 +191,51 @@ const switchToLogin = () => {
 // 登录状态
 const isLoggedIn = computed(() => authStore.isLoggedIn)
 
+// Sidebar 折叠状态
+const SIDEBAR_COLLAPSE_KEY = 'app.sidebar.collapsed'
+const collapsed = ref(localStorage.getItem(SIDEBAR_COLLAPSE_KEY) === 'true')
+const isMobile = ref(false)
+
+// 检测屏幕尺寸
+const checkIsMobile = () => {
+  isMobile.value = window.innerWidth < 768
+  if (isMobile.value) {
+    collapsed.value = true
+  }
+}
+
+// 切换侧边栏
+const toggleSidebar = () => {
+  collapsed.value = !collapsed.value
+}
+
+// 侧边栏折叠事件
+const onSidebarCollapse = () => {
+  collapsed.value = true
+}
+
+// 侧边栏展开事件
+const onSidebarExpand = () => {
+  collapsed.value = false
+}
+
+// 菜单选择事件 - 移动端自动关闭
+const onMenuSelect = () => {
+  if (isMobile.value) {
+    collapsed.value = true
+  }
+}
+
+// 监听窗口大小变化
+const handleWindowResize = () => {
+  checkIsMobile()
+  adjustContainerSize()
+}
+
+watch(collapsed, (val) => {
+  localStorage.setItem(SIDEBAR_COLLAPSE_KEY, String(val))
+})
+
 useSEO({
   title: t('Remove Background - Free AI Background Removal Tool'),
   description: t('Remove background from images using AI technology. Free online tool to remove image backgrounds instantly. Supports JPG, PNG, WebP formats.'),
@@ -667,10 +713,6 @@ const adjustContainerSize = async () => {
 
 watch([uploadedImageUrl, resultImageUrl], adjustContainerSize, { immediate: true })
 
-const handleResize = () => {
-  adjustContainerSize()
-}
-
 const handleSplitLineMouseDown = (e: MouseEvent) => {
   e.preventDefault()
   isDraggingSplitLine.value = true
@@ -860,7 +902,7 @@ const removeHistoryItem = (index: number) => {
 }
 
 onMounted(async () => {
-  window.addEventListener('resize', handleResize)
+  window.addEventListener('resize', handleWindowResize)
   window.addEventListener('paste', handlePaste)
   
   // 初始化认证状态
@@ -878,10 +920,13 @@ onMounted(async () => {
   } catch (error) {
     console.error('Failed to get server config:', error)
   }
+  
+  // 检测移动端
+  checkIsMobile()
 })
 
 onUnmounted(() => {
-  window.removeEventListener('resize', handleResize)
+  window.removeEventListener('resize', handleWindowResize)
   window.removeEventListener('paste', handlePaste)
   if (uploadedImageUrl.value && uploadedImageUrl.value.startsWith('blob:')) {
     URL.revokeObjectURL(uploadedImageUrl.value)
@@ -895,33 +940,28 @@ onUnmounted(() => {
 
 <template>
   <div class="home-page" @dragenter="handleDragEnter" @dragover="handleDragOver" @dragleave="handleDragLeave" @drop="handleDrop">
-    <!-- Header -->
-    <header class="marketing-header">
-      <div class="header-container">
-        <div class="header-left">
-          <router-link to="/" class="logo-link">
-            <img v-if="logoUrl" :src="logoUrl" :alt="appName" class="logo-img" />
-            <span class="logo-text">{{ appName }}</span>
-          </router-link>
-        </div>
-        <div class="header-right">
-          <n-space :size="12">
-            <!-- 未登录状态：显示登录/注册按钮 -->
-            <template v-if="!isLoggedIn">
+    <!-- 未登录状态：显示营销页面布局 -->
+    <template v-if="!isLoggedIn">
+      <!-- Header -->
+      <header class="marketing-header">
+        <div class="header-container">
+          <div class="header-left">
+            <router-link to="/" class="logo-link">
+              <img v-if="logoUrl" :src="logoUrl" :alt="appName" class="logo-img" />
+              <span class="logo-text">{{ appName }}</span>
+            </router-link>
+          </div>
+          <div class="header-right">
+            <n-space :size="12">
               <n-button quaternary @click="handleSignup">注册</n-button>
               <n-button type="primary" @click="handleLogin" class="login-btn">登录</n-button>
-            </template>
-            <!-- 已登录状态：显示用户菜单 -->
-            <template v-else>
-              <UserMenu />
-            </template>
-          </n-space>
+            </n-space>
+          </div>
         </div>
-      </div>
-    </header>
+      </header>
 
-    <!-- Main Content -->
-    <main class="main-content">
+      <!-- Main Content -->
+      <main class="main-content">
       <div v-if="isDragging" class="global-drag-overlay">
         <div class="overlay-content">
           <p>拖放图片到任意位置去除背景</p>
@@ -1073,10 +1113,10 @@ onUnmounted(() => {
           </div>
         </div>
       </div>
-    </main>
+      </main>
 
-    <!-- Footer -->
-    <footer class="marketing-footer">
+      <!-- Footer -->
+      <footer class="marketing-footer">
       <div class="footer-container">
         <div class="footer-grid">
           <div class="footer-column">
@@ -1120,7 +1160,201 @@ onUnmounted(() => {
           <p class="copyright">© {{ currentYear }} {{ appName }}. 版权所有。</p>
         </div>
       </div>
-    </footer>
+      </footer>
+    </template>
+
+    <!-- 已登录状态：显示应用布局（带 sidebar 和 header） -->
+    <template v-else>
+      <n-layout has-sider class="app-layout">
+        <!-- 侧边栏 -->
+        <n-layout-sider
+          bordered
+          collapse-mode="width"
+          :collapsed-width="64"
+          :width="240"
+          v-model:collapsed="collapsed"
+          :show-trigger="!isMobile"
+          :responsive="true"
+          :breakpoint="768"
+          @collapse="onSidebarCollapse"
+          @expand="onSidebarExpand"
+        >
+          <AppSidebar :collapsed="collapsed" @menu-select="onMenuSelect" />
+        </n-layout-sider>
+
+        <!-- 主内容区 -->
+        <n-layout>
+          <!-- 顶部导航 -->
+          <n-layout-header bordered>
+            <AppHeader @toggle-sidebar="toggleSidebar" />
+          </n-layout-header>
+
+          <!-- 内容区域 -->
+          <n-layout-content>
+            <div class="content-wrapper">
+              <div v-if="isDragging" class="global-drag-overlay">
+                <div class="overlay-content">
+                  <p>拖放图片到任意位置去除背景</p>
+                </div>
+              </div>
+              
+              <input ref="fileInputRef" type="file" accept="image/*" style="display: none" @change="handleFileSelect" />
+              
+              <div class="tool-page">
+                  <div class="page-header">
+                    <h2>去除背景</h2>
+                    <div v-if="uploadedImage" class="toolbar-actions">
+                      <button v-if="resultImage" class="toolbar-btn" @click="handleDownload" title="下载">
+                        <i class="fa fa-download"></i>
+                      </button>
+                      <button class="toolbar-btn" @click="resetUpload" title="更换图片">
+                        <i class="fa fa-refresh"></i>
+                      </button>
+                    </div>
+                  </div>
+
+                  <div class="page-content">
+                    <div class="tool-container">
+                      <div class="upload-section">
+                        <div v-if="!uploadedImage" class="upload-area" :class="{ dragging: isDragging }">
+                          <div class="upload-content">
+                            <button type="button" class="upload-btn" @click="triggerFileInput" :disabled="processing">
+                              <i class="fa fa-upload"></i>
+                              <span>上传图片</span>
+                            </button>
+                            
+                            <div class="divider">
+                              <span>或</span>
+                            </div>
+                            
+                            <div class="url-input-wrapper" @click.stop>
+                              <input
+                                ref="urlInputRef"
+                                v-model="imageUrl"
+                                type="text"
+                                class="url-input"
+                                placeholder="粘贴图片URL"
+                                @keyup.enter="handleUrlSubmit"
+                                @paste="handleUrlPaste"
+                                :disabled="processing"
+                              />
+                            </div>
+                            
+                            <p class="upload-hint">拖放图片到任意位置，或直接粘贴图片</p>
+                            <p class="upload-format-hint">支持 JPG、PNG、WebP 格式</p>
+                          </div>
+                          <div v-if="processing" class="upload-processing-overlay">
+                            <div class="spinner"></div>
+                            <p>加载图片URL中...</p>
+                          </div>
+                        </div>
+
+                        <div v-else class="preview-section">
+                          <div class="comparison-view" v-if="resultImage">
+                            <div class="comparison-container" ref="comparisonContainerRef">
+                              <div class="comparison-image original-image" :style="{ clipPath: `inset(0 ${100 - splitPosition}% 0 0)` }">
+                                <img ref="originalImageRef" :src="uploadedImageUrl" alt="原图" @load="adjustContainerSize" />
+                              </div>
+                              <div class="comparison-image result-image" :style="{ clipPath: `inset(0 0 0 ${splitPosition}%)` }">
+                                <img ref="resultImageRef" :src="resultImageUrl" alt="结果" @load="adjustContainerSize" />
+                              </div>
+                              <div class="split-line" :class="{ dragging: isDraggingSplitLine }" :style="{ left: `${splitPosition}%` }" @mousedown.prevent.stop="handleSplitLineMouseDown">
+                                <div class="split-line-handle">
+                                  <i class="fa fa-arrows-h"></i>
+                                </div>
+                              </div>
+                            </div>
+                          </div>
+                          <div v-else class="single-image-view">
+                            <div class="image-wrapper" ref="singleImageWrapperRef">
+                              <div class="single-image-container">
+                                <img ref="singleImageRef" :src="uploadedImageUrl" alt="原图" @load="adjustContainerSize" />
+                              </div>
+                              <div v-if="processing" class="processing-overlay">
+                                <div class="spinner"></div>
+                                <p>处理中...</p>
+                              </div>
+                            </div>
+                          </div>
+                        </div>
+                      </div>
+
+                      <div v-if="historyList.length > 0 || uploadedImage" class="history-bar">
+                        <div class="history-scroll-container">
+                          <button 
+                            type="button"
+                            class="history-item add-button"
+                            @click.stop="triggerFileInput"
+                            title="添加新图片"
+                          >
+                            <i class="fa fa-plus"></i>
+                          </button>
+
+                          <div
+                            v-for="(item, index) in historyList"
+                            :key="item.id"
+                            class="history-item"
+                            :class="{ 'active': currentHistoryIndex === index }"
+                            @click="selectHistoryItem(index)"
+                          >
+                            <div class="history-thumbnail">
+                              <img :src="getHistoryThumbnailUrl(item)" alt="History" />
+                              <button
+                                type="button"
+                                class="history-delete-btn"
+                                @click.stop="removeHistoryItem(index)"
+                                title="删除"
+                                :aria-label="'删除'"
+                              ></button>
+                            </div>
+                          </div>
+
+                          <div
+                            v-if="uploadedImage && resultImage && currentHistoryIndex === -1"
+                            class="history-item active"
+                          >
+                            <div class="history-thumbnail">
+                              <img :src="resultImageUrl" alt="Current" />
+                            </div>
+                          </div>
+                        </div>
+                      </div>
+                      
+                      <!-- 示例图片区块 -->
+                      <div v-if="!uploadedImage" class="sample-images-section">
+                        <p class="sample-images-title">{{ t('Click image to try') }}</p>
+                        <div class="sample-images-container">
+                          <div
+                            v-for="sample in sampleImages"
+                            :key="sample.id"
+                            class="sample-image-item"
+                            @click="handleSampleImageClick(sample.url)"
+                            :class="{ loading: processing }"
+                          >
+                            <div class="sample-image-wrapper">
+                              <img :src="sample.url" :alt="sample.name" loading="lazy" />
+                              <div class="sample-image-overlay">
+                                <Icon icon="tabler:wand" class="overlay-icon" />
+                              </div>
+                            </div>
+                          </div>
+                        </div>
+                      </div>
+                    </div>
+                  </div>
+                </div>
+            </div>
+          </n-layout-content>
+        </n-layout>
+
+        <!-- 移动端遮罩层 -->
+        <div 
+          v-if="isMobile && !collapsed" 
+          class="mobile-overlay"
+          @click="toggleSidebar"
+        ></div>
+      </n-layout>
+    </template>
 
     <!-- 登录弹窗 -->
     <n-modal
@@ -1310,6 +1544,69 @@ onUnmounted(() => {
   overflow: visible; /* 改为 visible 允许内容溢出 */
 }
 
+/* 应用布局样式（登录后） */
+.app-layout {
+  height: 100vh;
+}
+
+.content-wrapper {
+  padding: 20px;
+  min-height: calc(100vh - 64px);
+  overflow-y: auto;
+}
+
+/* 使用Naive UI内置的sticky功能 */
+:deep(.n-layout-header) {
+  position: sticky;
+  top: 0;
+  z-index: 1000;
+}
+
+/* 移动端遮罩层 */
+.mobile-overlay {
+  position: fixed;
+  top: 0;
+  left: 0;
+  right: 0;
+  bottom: 0;
+  background-color: rgba(0, 0, 0, 0.5);
+  z-index: 999;
+}
+
+/* 移动端样式 */
+@media (max-width: 767px) {
+  /* 移动端时完全隐藏侧边栏 */
+  :deep(.n-layout-sider) {
+    position: fixed !important;
+    top: 0;
+    left: 0;
+    height: 100vh;
+    z-index: 1000;
+    width: 280px !important;
+    max-width: 80vw;
+    transform: translateX(-100%);
+    transition: transform 0.3s ease;
+  }
+  
+  /* 移动端侧边栏打开时的样式 */
+  :deep(.n-layout-sider:not(.n-layout-sider--collapsed)) {
+    transform: translateX(0) !important;
+  }
+  
+  /* 移动端主内容区域占满全宽 */
+  :deep(.n-layout) {
+    margin-left: 0 !important;
+  }
+}
+
+/* 桌面端保持原有样式 */
+@media (min-width: 768px) {
+  :deep(.n-layout-sider) {
+    position: relative !important;
+    transform: none !important;
+  }
+}
+
 /* Header */
 .marketing-header {
   flex-shrink: 0;
@@ -1400,6 +1697,13 @@ onUnmounted(() => {
   height: 0; /* 强制 flex 子元素计算高度 */
 }
 
+/* 登录后的 main-content 样式覆盖 */
+.content-wrapper .main-content {
+  height: auto; /* 登录后恢复自动高度 */
+  min-height: auto;
+  overflow: visible; /* 登录后允许内容显示 */
+}
+
 .global-drag-overlay {
   position: fixed;
   inset: 0;