diff --git a/frontend/src/renderer/index.html b/frontend/src/renderer/index.html
index e842dd8..eef31de 100644
--- a/frontend/src/renderer/index.html
+++ b/frontend/src/renderer/index.html
@@ -6,19 +6,31 @@
   <title>CloudDisk</title>
   <link rel="stylesheet" href="https://unpkg.com/antd@5.12.0/dist/reset.css">
   <style>
-    body { margin: 0; font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; }
-    #root { min-height: 100vh; }
-    .login-container { display: flex; justify-content: center; align-items: center; height: 100vh; background: #f0f2f5; }
-    .login-box { width: 400px; padding: 40px; background: white; border-radius: 8px; box-shadow: 0 2px 8px rgba(0,0,0,0.1); }
-    .login-title { text-align: center; margin-bottom: 30px; font-size: 24px; }
+    * { margin: 0; padding: 0; box-sizing: border-box; }
+    body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; }
+    .login-wrap { display: flex; justify-content: center; align-items: center; height: 100vh; background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); }
+    .login-box { width: 400px; padding: 40px; background: white; border-radius: 12px; box-shadow: 0 10px 40px rgba(0,0,0,0.2); }
+    .logo { text-align: center; margin-bottom: 30px; font-size: 28px; font-weight: bold; color: #1890ff; }
     .main-layout { min-height: 100vh; }
-    .header { background: #1890ff; padding: 0 20px; display: flex; align-items: center; justify-content: space-between; color: white; font-size: 20px; font-weight: bold; }
-    .toolbar { padding: 16px; background: #fff; border-bottom: 1px solid #f0f0f0; }
-    .file-list { padding: 16px; background: #fff; }
+    .header { background: linear-gradient(90deg, #1890ff, #40a9ff); padding: 0 24px; height: 56px; display: flex; align-items: center; justify-content: space-between; color: white; }
+    .header-title { font-size: 20px; font-weight: bold; }
+    .toolbar { padding: 16px 24px; background: #fff; border-bottom: 1px solid #f0f0f0; display: flex; gap: 12px; }
+    .content { padding: 24px; background: #fff; }
+    .file-item { display: flex; align-items: center; padding: 12px; border-bottom: 1px solid #f0f0f0; cursor: pointer; transition: background 0.2s; }
+    .file-item:hover { background: #f5f5f5; }
+    .file-icon { font-size: 24px; margin-right: 12px; }
+    .file-info { flex: 1; }
+    .file-name { font-size: 14px; }
+    .file-meta { font-size: 12px; color: #999; }
+    .empty-wrap { text-align: center; padding: 60px 0; color: #999; }
+    .folder { color: #faad14; }
+    .pdf { color: #ff4d4f; }
+    .img { color: #1890ff; }
+    .doc { color: #1890ff; }
   </style>
 </head>
 <body>
-  <div id="root">Loading...</div>
+  <div id="root"></div>
   
   <script src="https://unpkg.com/react@18/umd/react.production.min.js"></script>
   <script src="https://unpkg.com/react-dom@18/umd/react-dom.production.min.js"></script>
@@ -26,76 +38,164 @@
   <script src="https://unpkg.com/@ant-design/icons@5.2.6/dist/index-umd.min.js"></script>
   
   <script>
-    const { Button, Layout, Menu, Input, Table, Avatar, Spin } = antd;
-    const { FolderOutlined, FileOutlined, UploadOutlined, DeleteOutlined, DownloadOutlined, ShareAltOutlined, UserOutlined, ClockCircleOutlined, HomeOutlined } = icons;
-    const { Header, Sider, Content } = Layout;
+    const { Button, Input, Modal, Progress, Message, Breadcrumb, Dropdown, Spin } = antd;
+    const { FolderOutlined, FileOutlined, FilePdfOutlined, FileImageOutlined, FileWordOutlined, FileExcelOutlined, UploadOutlined, FolderAddOutlined, DeleteOutlined, DownloadOutlined, ShareAltOutlined, UserOutlined, SearchOutlined, HomeOutlined, ClockCircleOutlined, CloudOutlined, SettingOutlined, LogoutOutlined } = icons;
+    
+    // Mock Data
+    const mockFiles = [
+      { id: 1, name: '项目文档', type: 'folder', size: 0, updated_at: '2026-03-10 10:30' },
+      { id: 2, name: '产品需求.pdf', type: 'pdf', size: 2500000, updated_at: '2026-03-09 15:20' },
+      { id: 3, name: '首页设计.png', type: 'img', size: 3200000, updated_at: '2026-03-08 09:15' },
+      { id: 4, name: '会议记录.docx', type: 'doc', size: 156000, updated_at: '2026-03-07 14:30' },
+      { id: 5, name: '数据报表.xlsx', type: 'xls', size: 450000, updated_at: '2026-03-06 11:00' },
+    ];
+    
+    // Get Icon by type
+    const getIcon = (type, name) => {
+      if (type === 'folder') return React.createElement(FolderOutlined, { className: 'file-icon folder' });
+      const ext = name.split('.').pop();
+      const iconMap = {
+        pdf: FilePdfOutlined,
+        img: FileImageOutlined,
+        doc: FileWordOutlined,
+        docx: FileWordOutlined,
+        xls: FileExcelOutlined,
+        xlsx: FileExcelOutlined,
+      };
+      const Icon = iconMap[ext] || FileOutlined;
+      return React.createElement(Icon, { className: 'file-icon ' + (ext === 'pdf' ? 'pdf' : ext === 'img' ? 'img' : 'doc') });
+    };
+    
+    // Format size
+    const formatSize = (bytes) => {
+      if (!bytes) return '-';
+      return (bytes / 1024 / 1024).toFixed(2) + ' MB';
+    };
     
     // App Component
     function App() {
+      const [page, setPage] = React.useState('files');
       const [isLoggedIn, setIsLoggedIn] = React.useState(false);
-      const [loading, setLoading] = React.useState(false);
       const [username, setUsername] = React.useState('');
       const [password, setPassword] = React.useState('');
+      const [files, setFiles] = React.useState(mockFiles);
+      const [selectedFiles, setSelectedFiles] = React.useState([]);
+      const [uploadModal, setUploadModal] = React.useState(false);
+      const [searchKeyword, setSearchKeyword] = React.useState('');
       
-      const handleLogin = () => {
-        if (username && password) {
-          setIsLoggedIn(true);
-        }
-      };
+      const handleLogin = () => { if (username && password) setIsLoggedIn(true); };
+      const handleLogout = () => { setIsLoggedIn(false); };
+      
+      const filteredFiles = searchKeyword 
+        ? files.filter(f => f.name.includes(searchKeyword))
+        : files;
       
       const menuItems = [
-        { key: 'files', icon: React.createElement(FolderOutlined), label: '我的文件' },
-        { key: 'recent', icon: React.createElement(ClockCircleOutlined), label: '最近访问' },
-        { key: 'shared', icon: React.createElement(ShareAltOutlined), label: '共享文件' },
-        { key: 'trash', icon: React.createElement(DeleteOutlined), label: '回收站' },
+        { key: 'files', icon: React.createElement(FolderOutlined), label: '我的文件', onClick: () => setPage('files') },
+        { key: 'recent', icon: React.createElement(ClockCircleOutlined), label: '最近访问', onClick: () => setPage('recent') },
+        { key: 'shared', icon: React.createElement(ShareAltOutlined), label: '共享文件', onClick: () => setPage('shared') },
+        { key: 'trash', icon: React.createElement(DeleteOutlined), label: '回收站', onClick: () => setPage('trash') },
       ];
       
+      // Login Page
       if (!isLoggedIn) {
-        return React.createElement('div', { className: 'login-container' },
+        return React.createElement('div', { className: 'login-wrap' },
           React.createElement('div', { className: 'login-box' },
-            React.createElement('h1', { className: 'login-title' }, 'CloudDisk'),
-            React.createElement(Input, { 
-              placeholder: '用户名', 
-              value: username,
-              onChange: (e) => setUsername(e.target.value),
-              style: { marginBottom: '16px' } 
-            }),
-            React.createElement(Input.Password, { 
-              placeholder: '密码', 
-              value: password,
-              onChange: (e) => setPassword(e.target.value),
-              style: { marginBottom: '16px' } 
-            }),
-            React.createElement(Button, { 
-              type: 'primary', 
-              block: true,
-              onClick: handleLogin
-            }, '登录')
+            React.createElement('div', { className: 'logo' }, '☁️ CloudDisk'),
+            React.createElement(Input, { placeholder: '用户名', value: username, onChange: e => setUsername(e.target.value), style: { marginBottom: 16 }, prefix: React.createElement(UserOutlined) }),
+            React.createElement(Input.Password, { placeholder: '密码', value: password, onChange: e => setPassword(e.target.value), style: { marginBottom: 16 } }),
+            React.createElement(Button, { type: 'primary', block: true, onClick: handleLogin, style: { height: 40, fontSize: 16 } }, '登 录'),
+            React.createElement('p', { style: { textAlign: 'center', marginTop: 16, color: '#999', fontSize: 12 } }, '还没有账号？立即注册')
           )
         );
       }
       
-      return React.createElement(Layout, { className: 'main-layout' },
-        React.createElement(Header, { className: 'header' },
-          React.createElement('span', null, 'CloudDisk'),
-          React.createElement(Avatar, { icon: React.createElement(UserOutlined), style: { cursor: 'pointer' } })
+      // Main App
+      return React.createElement('div', { className: 'main-layout' },
+        // Header
+        React.createElement('div', { className: 'header' },
+          React.createElement('span', { className: 'header-title' }, 'CloudDisk'),
+          React.createElement('div', { style: { display: 'flex', alignItems: 'center', gap: 16 } },
+            React.createElement(Input, { placeholder: '搜索文件...', prefix: React.createElement(SearchOutlined), style: { width: 200, background: 'rgba(255,255,255,0.2)', border: 'none', color: 'white' } }),
+            React.createElement(Button, { type: 'text', icon: React.createElement(SettingOutlined), style: { color: 'white' } }),
+            React.createElement(Button, { type: 'text', icon: React.createElement(LogoutOutlined), onClick: handleLogout, style: { color: 'white' } })
+          )
         ),
-        React.createElement(Layout, {},
-          React.createElement(Sider, { width: 200, style: { background: '#fff' } },
-            React.createElement(Menu, { mode: 'inline', defaultSelectedKeys: ['files'], items: menuItems, style: { height: '100%' } })
-          ),
-          React.createElement(Content, { style: { padding: '20px', background: '#fff' } },
-            React.createElement('div', { className: 'toolbar' },
-              React.createElement(Button, { icon: React.createElement(UploadOutlined), style: { marginRight: '8px' } }, '上传文件'),
-              React.createElement(Button, { icon: React.createElement(FolderOutlined) }, '新建文件夹')
+        
+        // Content
+        React.createElement('div', { style: { display: 'flex' } },
+          // Sidebar
+          React.createElement('div', { style: { width: 200, background: '#fff', borderRight: '1px solid #f0f0f0', padding: '16px 0' } },
+            ...menuItems.map(item => 
+              React.createElement('div', { 
+                key: item.key,
+                onClick: item.onClick,
+                style: { 
+                  padding: '12px 24px', 
+                  cursor: 'pointer', 
+                  background: page === item.key ? '#e6f7ff' : 'transparent',
+                  color: page === item.key ? '#1890ff' : '#666',
+                  display: 'flex', alignItems: 'center', gap: 8
+                }
+              },
+                React.createElement(item.icon),
+                React.createElement('span', null, item.label)
+              )
             ),
-            React.createElement('p', { style: { color: '#999', textAlign: 'center', marginTop: '50px' } }, '暂无文件，请上传文件开始使用')
+            React.createElement('div', { style: { padding: '16px 24px', borderTop: '1px solid #f0f0f0', marginTop: 'auto' } },
+              React.createElement(CloudOutlined, { style: { marginRight: 8 } }),
+              React.createElement('span', { fontSize: 12, color: '#999' }, '2.1GB / 10GB')
+            )
+          ),
+          
+          // File List
+          React.createElement('div', { style: { flex: 1, background: '#f5f5f5', minHeight: 'calc(100vh - 56px)' } },
+            // Toolbar
+            React.createElement('div', { className: 'toolbar', style: { background: '#fff', marginBottom: 2 } },
+              React.createElement(Button, { icon: React.createElement(UploadOutlined), type: 'primary', onClick: () => setUploadModal(true) }, '上传文件'),
+              React.createElement(Button, { icon: React.createElement(FolderAddOutlined) }, '新建文件夹'),
+              React.createElement(Button, { icon: React.createElement(DeleteOutlined), disabled: selectedFiles.length === 0 }, '删除'),
+              React.createElement(Button, { icon: React.createElement(DownloadOutlined), disabled: selectedFiles.length === 0 }, '下载'),
+              React.createElement(Button, { icon: React.createElement(ShareAltOutlined), disabled: selectedFiles.length === 0 }, '分享')
+            ),
+            
+            // Breadcrumb
+            React.createElement(Breadcrumb, { style: { padding: '12px 24px', background: '#fff' }, 
+              React.createElement(Breadcrumb.Item, null, React.createElement(HomeOutlined), ' 全部文件')
+            ),
+            
+            // Files
+            React.createElement('div', { style: { background: '#fff', margin: '0 24px 24px', borderRadius: 8 } },
+              filteredFiles.length === 0 
+                ? React.createElement('div', { className: 'empty-wrap' }, React.createElement(FolderOutlined, { style: { fontSize: 48, marginBottom: 16 } }), React.createElement('p', null, '暂无文件'))
+                : filteredFiles.map(file => 
+                    React.createElement('div', { key: file.id, className: 'file-item' },
+                      getIcon(file.type, file.name),
+                      React.createElement('div', { className: 'file-info' },
+                        React.createElement('div', { className: 'file-name' }, file.name),
+                        React.createElement('div', { className: 'file-meta' }, file.updated_at + ' · ' + formatSize(file.size))
+                      )
+                    )
+                  )
+            )
+          )
+        ),
+        
+        // Upload Modal
+        React.createElement(Modal, { 
+          title: '上传文件', 
+          open: uploadModal, 
+          onCancel: () => setUploadModal(false),
+          footer: null 
+        },
+          React.createElement('div', { padding: '40px 0', textAlign: 'center', border: '2px dashed #d9d9d9', borderRadius: 8 },
+            React.createElement(UploadOutlined, { style: { fontSize: 48, color: '#1890ff' } }),
+            React.createElement('p', { marginTop: 16 }, '点击或拖拽文件到此处上传')
           )
         )
       );
     }
     
-    // Render
     ReactDOM.createRoot(document.getElementById('root')).render(React.createElement(App));
   </script>
 </body>
