diff --git a/it0_app/lib/core/router/app_router.dart b/it0_app/lib/core/router/app_router.dart
index 4b5b5b7..a801dff 100644
--- a/it0_app/lib/core/router/app_router.dart
+++ b/it0_app/lib/core/router/app_router.dart
@@ -75,20 +75,51 @@ class ScaffoldWithNav extends ConsumerWidget {
   final Widget child;
   const ScaffoldWithNav({super.key, required this.child});
 
+  static const _routes = [
+    '/dashboard',
+    '/chat',
+    '/tasks',
+    '/alerts',
+    '/settings',
+  ];
+
+  int _selectedIndex(BuildContext context) {
+    final location = GoRouterState.of(context).uri.path;
+    for (int i = 0; i < _routes.length; i++) {
+      if (location.startsWith(_routes[i])) return i;
+    }
+    return 0;
+  }
+
   @override
   Widget build(BuildContext context, WidgetRef ref) {
     final unreadCount = ref.watch(unreadNotificationCountProvider);
+    final currentIndex = _selectedIndex(context);
 
     return Scaffold(
       body: child,
       bottomNavigationBar: NavigationBar(
+        selectedIndex: currentIndex,
         destinations: [
           const NavigationDestination(
-              icon: Icon(Icons.dashboard), label: '仪表盘'),
-          const NavigationDestination(icon: Icon(Icons.chat), label: '对话'),
-          const NavigationDestination(icon: Icon(Icons.task), label: '任务'),
+              icon: Icon(Icons.dashboard_outlined),
+              selectedIcon: Icon(Icons.dashboard),
+              label: '仪表盘'),
+          const NavigationDestination(
+              icon: Icon(Icons.chat_outlined),
+              selectedIcon: Icon(Icons.chat),
+              label: '对话'),
+          const NavigationDestination(
+              icon: Icon(Icons.task_outlined),
+              selectedIcon: Icon(Icons.task),
+              label: '任务'),
           NavigationDestination(
             icon: Badge(
+              isLabelVisible: unreadCount > 0,
+              label: Text('$unreadCount'),
+              child: const Icon(Icons.notifications_outlined),
+            ),
+            selectedIcon: Badge(
               isLabelVisible: unreadCount > 0,
               label: Text('$unreadCount'),
               child: const Icon(Icons.notifications),
@@ -96,17 +127,14 @@ class ScaffoldWithNav extends ConsumerWidget {
             label: '告警',
           ),
           const NavigationDestination(
-              icon: Icon(Icons.settings), label: '设置'),
+              icon: Icon(Icons.settings_outlined),
+              selectedIcon: Icon(Icons.settings),
+              label: '设置'),
         ],
         onDestinationSelected: (index) {
-          final routes = [
-            '/dashboard',
-            '/chat',
-            '/tasks',
-            '/alerts',
-            '/settings'
-          ];
-          GoRouter.of(context).go(routes[index]);
+          if (index != currentIndex) {
+            GoRouter.of(context).go(_routes[index]);
+          }
         },
       ),
     );
diff --git a/it0_app/lib/features/alerts/presentation/pages/alerts_page.dart b/it0_app/lib/features/alerts/presentation/pages/alerts_page.dart
index 79f702a..e363fb2 100644
--- a/it0_app/lib/features/alerts/presentation/pages/alerts_page.dart
+++ b/it0_app/lib/features/alerts/presentation/pages/alerts_page.dart
@@ -60,7 +60,7 @@ class _AlertsPageState extends ConsumerState<AlertsPage> {
 
     return Scaffold(
       appBar: AppBar(
-        title: const Text('Alert Center'),
+        title: const Text('告警中心'),
         actions: [
           IconButton(
             icon: const Icon(Icons.refresh),
@@ -82,8 +82,8 @@ class _AlertsPageState extends ConsumerState<AlertsPage> {
                   if (filtered.isEmpty) {
                     return const EmptyState(
                       icon: Icons.notifications_off_outlined,
-                      title: 'No alerts',
-                      subtitle: 'All clear — no matching alerts found',
+                      title: '暂无告警',
+                      subtitle: '一切正常 — 没有匹配的告警',
                     );
                   }
                   return ListView.builder(
@@ -110,7 +110,7 @@ class _AlertsPageState extends ConsumerState<AlertsPage> {
                             color: AppColors.error, size: 48),
                         const SizedBox(height: 12),
                         const Text(
-                          'Failed to load alerts',
+                          '加载告警失败',
                           style: TextStyle(
                               fontSize: 16, fontWeight: FontWeight.w600),
                         ),
@@ -126,7 +126,7 @@ class _AlertsPageState extends ConsumerState<AlertsPage> {
                           onPressed: () =>
                               ref.invalidate(alertEventsProvider),
                           icon: const Icon(Icons.refresh),
-                          label: const Text('Retry'),
+                          label: const Text('重试'),
                         ),
                       ],
                     ),
@@ -157,7 +157,7 @@ class _AlertsPageState extends ConsumerState<AlertsPage> {
                 return Padding(
                   padding: const EdgeInsets.only(right: 8),
                   child: FilterChip(
-                    label: Text(s == 'all' ? 'All severity' : s),
+                    label: Text(s == 'all' ? '全部级别' : s),
                     selected: selected,
                     selectedColor: _severityChipColor(s).withOpacity(0.25),
                     checkmarkColor: _severityChipColor(s),
@@ -191,7 +191,7 @@ class _AlertsPageState extends ConsumerState<AlertsPage> {
                 return Padding(
                   padding: const EdgeInsets.only(right: 8),
                   child: FilterChip(
-                    label: Text(s == 'all' ? 'All status' : s),
+                    label: Text(s == 'all' ? '全部状态' : s),
                     selected: selected,
                     selectedColor: AppColors.primary.withOpacity(0.25),
                     checkmarkColor: AppColors.primary,
@@ -251,7 +251,7 @@ class _AlertsPageState extends ConsumerState<AlertsPage> {
       if (mounted) {
         ScaffoldMessenger.of(context).showSnackBar(
           const SnackBar(
-            content: Text('Alert acknowledged'),
+            content: Text('告警已确认'),
             backgroundColor: AppColors.success,
           ),
         );
@@ -260,7 +260,7 @@ class _AlertsPageState extends ConsumerState<AlertsPage> {
       if (mounted) {
         ScaffoldMessenger.of(context).showSnackBar(
           SnackBar(
-            content: Text('Failed to acknowledge: $e'),
+            content: Text('确认失败: $e'),
             backgroundColor: AppColors.error,
           ),
         );
@@ -376,7 +376,7 @@ class _AlertCard extends StatelessWidget {
           mainAxisAlignment: MainAxisAlignment.end,
           children: [
             Text(
-              'Acknowledge',
+              '确认',
               style: TextStyle(
                   color: AppColors.info,
                   fontWeight: FontWeight.w600,
diff --git a/it0_app/lib/features/approvals/presentation/pages/approvals_page.dart b/it0_app/lib/features/approvals/presentation/pages/approvals_page.dart
index dda0d49..ab024c6 100644
--- a/it0_app/lib/features/approvals/presentation/pages/approvals_page.dart
+++ b/it0_app/lib/features/approvals/presentation/pages/approvals_page.dart
@@ -77,7 +77,7 @@ class _ApprovalsPageState extends ConsumerState<ApprovalsPage> {
 
     return Scaffold(
       appBar: AppBar(
-        title: const Text('Approval Center'),
+        title: const Text('审批中心'),
         actions: [
           IconButton(
             icon: const Icon(Icons.refresh),
@@ -94,17 +94,17 @@ class _ApprovalsPageState extends ConsumerState<ApprovalsPage> {
               segments: const [
                 ButtonSegment(
                   value: _ApprovalFilter.all,
-                  label: Text('All'),
+                  label: Text('全部'),
                   icon: Icon(Icons.list, size: 18),
                 ),
                 ButtonSegment(
                   value: _ApprovalFilter.pending,
-                  label: Text('Pending'),
+                  label: Text('待审批'),
                   icon: Icon(Icons.hourglass_top, size: 18),
                 ),
                 ButtonSegment(
                   value: _ApprovalFilter.expired,
-                  label: Text('Expired'),
+                  label: Text('已过期'),
                   icon: Icon(Icons.timer_off, size: 18),
                 ),
               ],
@@ -138,11 +138,11 @@ class _ApprovalsPageState extends ConsumerState<ApprovalsPage> {
                           child: EmptyState(
                             icon: Icons.approval_outlined,
                             title: _filter == _ApprovalFilter.all
-                                ? 'No approvals'
-                                : 'No ${_filter.name} approvals',
+                                ? '暂无审批'
+                                : '没有${_filter.name}审批记录',
                             subtitle: _filter == _ApprovalFilter.all
-                                ? 'Approval requests will appear here'
-                                : 'Try changing the filter',
+                                ? '审批请求将显示在此处'
+                                : '尝试切换筛选条件',
                           ),
                         ),
                       ],
@@ -171,7 +171,7 @@ class _ApprovalsPageState extends ConsumerState<ApprovalsPage> {
                             color: AppColors.error, size: 48),
                         const SizedBox(height: 12),
                         const Text(
-                          'Failed to load approvals',
+                          '加载审批失败',
                           style: TextStyle(
                               fontSize: 16, fontWeight: FontWeight.w600),
                         ),
@@ -186,7 +186,7 @@ class _ApprovalsPageState extends ConsumerState<ApprovalsPage> {
                         OutlinedButton.icon(
                           onPressed: () => ref.invalidate(approvalsProvider),
                           icon: const Icon(Icons.refresh),
-                          label: const Text('Retry'),
+                          label: const Text('重试'),
                         ),
                       ],
                     ),
@@ -287,13 +287,13 @@ class _ApprovalCardState extends State<_ApprovalCard> {
   // ---- Countdown display ---------------------------------------------------
 
   String get _countdownLabel {
-    if (_remaining == Duration.zero) return 'Expired';
+    if (_remaining == Duration.zero) return '已过期';
     final hours = _remaining.inHours;
     final minutes = _remaining.inMinutes.remainder(60);
     final seconds = _remaining.inSeconds.remainder(60);
-    if (hours > 0) return '${hours}h ${minutes}m remaining';
-    if (minutes > 0) return '${minutes}m ${seconds}s remaining';
-    return '${seconds}s remaining';
+    if (hours > 0) return '剩余 ${hours}小时${minutes}分';
+    if (minutes > 0) return '剩余 ${minutes}分${seconds}秒';
+    return '剩余 ${seconds}秒';
   }
 
   Color get _countdownColor {
@@ -319,8 +319,8 @@ class _ApprovalCardState extends State<_ApprovalCard> {
           SnackBar(
             content: Text(
               action == 'approve'
-                  ? 'Approval granted successfully'
-                  : 'Approval rejected',
+                  ? '审批已通过'
+                  : '审批已拒绝',
             ),
             backgroundColor:
                 action == 'approve' ? AppColors.success : AppColors.error,
@@ -332,7 +332,7 @@ class _ApprovalCardState extends State<_ApprovalCard> {
       if (mounted) {
         ScaffoldMessenger.of(context).showSnackBar(
           SnackBar(
-            content: Text('Failed to $action: $e'),
+            content: Text('操作失败: $e'),
             backgroundColor: AppColors.error,
           ),
         );
@@ -434,7 +434,7 @@ class _ApprovalCardState extends State<_ApprovalCard> {
                                   strokeWidth: 2, color: AppColors.error),
                             )
                           : const Icon(Icons.close, size: 18),
-                      label: const Text('Reject'),
+                      label: const Text('拒绝'),
                       style: OutlinedButton.styleFrom(
                         foregroundColor: AppColors.error,
                         side: const BorderSide(color: AppColors.error),
@@ -454,7 +454,7 @@ class _ApprovalCardState extends State<_ApprovalCard> {
                                   strokeWidth: 2, color: Colors.white),
                             )
                           : const Icon(Icons.check, size: 18),
-                      label: const Text('Approve'),
+                      label: const Text('通过'),
                       style: FilledButton.styleFrom(
                         backgroundColor: AppColors.success,
                         foregroundColor: Colors.white,
diff --git a/it0_app/lib/features/chat/presentation/pages/chat_page.dart b/it0_app/lib/features/chat/presentation/pages/chat_page.dart
index 47894cf..2237b11 100644
--- a/it0_app/lib/features/chat/presentation/pages/chat_page.dart
+++ b/it0_app/lib/features/chat/presentation/pages/chat_page.dart
@@ -103,7 +103,7 @@ class ChatNotifier extends StateNotifier<ChatState> {
       final taskId = data['taskId'] as String? ?? data['task_id'] as String?;
 
       if (sessionId == null) {
-        state = state.copyWith(isStreaming: false, error: 'No sessionId returned');
+        state = state.copyWith(isStreaming: false, error: '未返回 sessionId');
         return;
       }
 
@@ -129,7 +129,7 @@ class ChatNotifier extends StateNotifier<ChatState> {
         } else if (event == 'error') {
           state = state.copyWith(
             isStreaming: false,
-            error: msg['message'] as String? ?? 'Stream error',
+            error: msg['message'] as String? ?? '流式传输错误',
           );
           _wsSubscription?.cancel();
         }
@@ -342,12 +342,12 @@ class _ChatPageState extends ConsumerState<ChatPage> with SingleTickerProviderSt
 
     return Scaffold(
       appBar: AppBar(
-        title: const Text('AI Agent'),
+        title: const Text('AI 对话'),
         actions: [
           if (chatState.messages.isNotEmpty)
             IconButton(
               icon: const Icon(Icons.delete_outline),
-              tooltip: 'Clear chat',
+              tooltip: '清空对话',
               onPressed: () => ref.read(chatMessagesProvider.notifier).clearChat(),
             ),
           // Voice input button (TODO 40)
@@ -389,7 +389,7 @@ class _ChatPageState extends ConsumerState<ChatPage> with SingleTickerProviderSt
                 TextButton(
                   onPressed: () =>
                       ref.read(chatMessagesProvider.notifier).clearChat(),
-                  child: const Text('Dismiss'),
+                  child: const Text('关闭'),
                 ),
               ],
             ),
@@ -404,12 +404,12 @@ class _ChatPageState extends ConsumerState<ChatPage> with SingleTickerProviderSt
                         Icon(Icons.smart_toy_outlined, size: 64, color: AppColors.textMuted),
                         const SizedBox(height: 16),
                         Text(
-                          'Start a conversation with iAgent',
+                          '开始与 iAgent 对话',
                           style: TextStyle(color: AppColors.textSecondary, fontSize: 16),
                         ),
                         const SizedBox(height: 8),
                         Text(
-                          'Hold the mic button for voice input',
+                          '长按麦克风按钮进行语音输入',
                           style: TextStyle(color: AppColors.textMuted, fontSize: 13),
                         ),
                       ],
@@ -454,7 +454,7 @@ class _ChatPageState extends ConsumerState<ChatPage> with SingleTickerProviderSt
                     ),
                   const SizedBox(width: 8),
                   Text(
-                    _isListening ? 'Listening...' : 'Transcribing...',
+                    _isListening ? '正在聆听...' : '正在转写...',
                     style: TextStyle(
                       color: _isListening ? AppColors.error : AppColors.primary,
                     ),
@@ -463,7 +463,7 @@ class _ChatPageState extends ConsumerState<ChatPage> with SingleTickerProviderSt
                   if (_isListening)
                     TextButton(
                       onPressed: () => _stopListening(),
-                      child: const Text('Cancel'),
+                      child: const Text('取消'),
                     ),
                 ],
               ),
@@ -483,7 +483,7 @@ class _ChatPageState extends ConsumerState<ChatPage> with SingleTickerProviderSt
                     child: TextField(
                       controller: _messageController,
                       decoration: const InputDecoration(
-                        hintText: 'Ask iAgent...',
+                        hintText: '向 iAgent 提问...',
                         border: OutlineInputBorder(
                           borderRadius: BorderRadius.all(Radius.circular(24)),
                         ),
@@ -593,7 +593,7 @@ class _ToolUseCard extends StatelessWidget {
               Icon(Icons.code, size: 16, color: AppColors.primary),
               const SizedBox(width: 6),
               Text(
-                'Tool Execution',
+                '工具执行',
                 style: TextStyle(
                   color: AppColors.primary,
                   fontSize: 12,
diff --git a/it0_app/lib/features/dashboard/presentation/pages/dashboard_page.dart b/it0_app/lib/features/dashboard/presentation/pages/dashboard_page.dart
index 99f6cc6..8c0c3f1 100644
--- a/it0_app/lib/features/dashboard/presentation/pages/dashboard_page.dart
+++ b/it0_app/lib/features/dashboard/presentation/pages/dashboard_page.dart
@@ -137,7 +137,7 @@ class DashboardPage extends ConsumerWidget {
 
     return Scaffold(
       appBar: AppBar(
-        title: const Text('Dashboard'),
+        title: const Text('仪表盘'),
         actions: [
           IconButton(
             icon: const Icon(Icons.refresh),
@@ -160,7 +160,7 @@ class DashboardPage extends ConsumerWidget {
           children: [
             // ------------- Summary cards row ---------------------------------
             const Text(
-              'Overview',
+              '概览',
               style: TextStyle(fontSize: 20, fontWeight: FontWeight.bold),
             ),
             const SizedBox(height: 12),
@@ -179,7 +179,7 @@ class DashboardPage extends ConsumerWidget {
             const SizedBox(height: 24),
             // ------------- Recent operations --------------------------------
             const Text(
-              'Recent Operations',
+              '最近操作',
               style: TextStyle(fontSize: 18, fontWeight: FontWeight.w600),
             ),
             const SizedBox(height: 12),
@@ -197,14 +197,14 @@ class DashboardPage extends ConsumerWidget {
       data: (summary) => _SummaryCard(
         icon: Icons.dns,
         iconColor: AppColors.success,
-        title: 'Servers',
+        title: '服务器',
         mainValue: '${summary.online}/${summary.total}',
-        subtitle: 'online',
+        subtitle: '在线',
         details: [
           if (summary.warning > 0)
-            _DetailRow(label: 'Warning', count: summary.warning, color: AppColors.warning),
+            _DetailRow(label: '告警', count: summary.warning, color: AppColors.warning),
           if (summary.offline > 0)
-            _DetailRow(label: 'Offline', count: summary.offline, color: AppColors.error),
+            _DetailRow(label: '离线', count: summary.offline, color: AppColors.error),
         ],
       ),
       loading: () => const _SummaryCardLoading(),
@@ -217,16 +217,16 @@ class DashboardPage extends ConsumerWidget {
       data: (summary) => _SummaryCard(
         icon: Icons.warning_amber_rounded,
         iconColor: summary.critical > 0 ? AppColors.error : AppColors.warning,
-        title: 'Alerts',
+        title: '告警',
         mainValue: '${summary.total}',
-        subtitle: 'active',
+        subtitle: '活跃',
         details: [
           if (summary.critical > 0)
-            _DetailRow(label: 'Critical', count: summary.critical, color: AppColors.error),
+            _DetailRow(label: '严重', count: summary.critical, color: AppColors.error),
           if (summary.warning > 0)
-            _DetailRow(label: 'Warning', count: summary.warning, color: AppColors.warning),
+            _DetailRow(label: '警告', count: summary.warning, color: AppColors.warning),
           if (summary.info > 0)
-            _DetailRow(label: 'Info', count: summary.info, color: AppColors.info),
+            _DetailRow(label: '信息', count: summary.info, color: AppColors.info),
         ],
       ),
       loading: () => const _SummaryCardLoading(),
@@ -242,11 +242,11 @@ class DashboardPage extends ConsumerWidget {
         return _SummaryCard(
           icon: Icons.assignment,
           iconColor: AppColors.info,
-          title: 'Tasks',
+          title: '任务',
           mainValue: '$running',
-          subtitle: 'running',
+          subtitle: '运行中',
           details: [
-            _DetailRow(label: 'Recent', count: tasks.length, color: AppColors.textSecondary),
+            _DetailRow(label: '最近', count: tasks.length, color: AppColors.textSecondary),
           ],
         );
       },
@@ -263,8 +263,8 @@ class DashboardPage extends ConsumerWidget {
         if (tasks.isEmpty) {
           return const EmptyState(
             icon: Icons.assignment_outlined,
-            title: 'No recent operations',
-            subtitle: 'Operations tasks will appear here',
+            title: '暂无操作记录',
+            subtitle: '操作任务将显示在此处',
           );
         }
         return Column(
@@ -297,7 +297,7 @@ class DashboardPage extends ConsumerWidget {
       error: (e, _) => Center(
         child: Padding(
           padding: const EdgeInsets.all(32),
-          child: Text('Failed to load: $e', style: const TextStyle(color: AppColors.error)),
+          child: Text('加载失败: $e', style: const TextStyle(color: AppColors.error)),
         ),
       ),
     );
diff --git a/it0_app/lib/features/servers/presentation/pages/servers_page.dart b/it0_app/lib/features/servers/presentation/pages/servers_page.dart
index 446fd6b..2c52944 100644
--- a/it0_app/lib/features/servers/presentation/pages/servers_page.dart
+++ b/it0_app/lib/features/servers/presentation/pages/servers_page.dart
@@ -47,7 +47,7 @@ class _ServersPageState extends ConsumerState<ServersPage> {
 
     return Scaffold(
       appBar: AppBar(
-        title: const Text('Servers'),
+        title: const Text('服务器'),
         actions: [
           IconButton(
             icon: const Icon(Icons.refresh),
@@ -69,8 +69,8 @@ class _ServersPageState extends ConsumerState<ServersPage> {
                   if (filtered.isEmpty) {
                     return const EmptyState(
                       icon: Icons.dns_outlined,
-                      title: 'No servers found',
-                      subtitle: 'No servers match the current filter',
+                      title: '未找到服务器',
+                      subtitle: '没有匹配当前筛选条件的服务器',
                     );
                   }
                   return ListView.builder(
@@ -97,7 +97,7 @@ class _ServersPageState extends ConsumerState<ServersPage> {
                             color: AppColors.error, size: 48),
                         const SizedBox(height: 12),
                         const Text(
-                          'Failed to load servers',
+                          '加载服务器失败',
                           style: TextStyle(
                               fontSize: 16, fontWeight: FontWeight.w600),
                         ),
@@ -112,7 +112,7 @@ class _ServersPageState extends ConsumerState<ServersPage> {
                         OutlinedButton.icon(
                           onPressed: () => ref.invalidate(serversProvider),
                           icon: const Icon(Icons.refresh),
-                          label: const Text('Retry'),
+                          label: const Text('重试'),
                         ),
                       ],
                     ),
@@ -138,7 +138,7 @@ class _ServersPageState extends ConsumerState<ServersPage> {
           return Padding(
             padding: const EdgeInsets.only(right: 8),
             child: FilterChip(
-              label: Text(env == 'all' ? 'All' : env),
+              label: Text(env == 'all' ? '全部' : env),
               selected: selected,
               onSelected: (_) => setState(() => _envFilter = env),
               selectedColor: _envColor(env).withOpacity(0.25),
@@ -254,17 +254,17 @@ class _ServersPageState extends ConsumerState<ServersPage> {
               const SizedBox(height: 20),
 
               // Detail rows
-              _DetailRow(label: 'IP Address', value: ip),
-              if (os.isNotEmpty) _DetailRow(label: 'OS', value: os),
+              _DetailRow(label: 'IP 地址', value: ip),
+              if (os.isNotEmpty) _DetailRow(label: '操作系统', value: os),
               if (cpu.isNotEmpty) _DetailRow(label: 'CPU', value: cpu),
               if (memory.isNotEmpty)
-                _DetailRow(label: 'Memory', value: memory),
+                _DetailRow(label: '内存', value: memory),
               if (region.isNotEmpty)
-                _DetailRow(label: 'Region', value: region),
+                _DetailRow(label: '区域', value: region),
               if (provider.isNotEmpty)
-                _DetailRow(label: 'Provider', value: provider),
+                _DetailRow(label: '云厂商', value: provider),
               if (createdAt.isNotEmpty)
-                _DetailRow(label: 'Created', value: createdAt),
+                _DetailRow(label: '创建时间', value: createdAt),
             ],
           ),
         ),
diff --git a/it0_app/lib/features/settings/presentation/pages/settings_page.dart b/it0_app/lib/features/settings/presentation/pages/settings_page.dart
index cb701d5..291cf5b 100644
--- a/it0_app/lib/features/settings/presentation/pages/settings_page.dart
+++ b/it0_app/lib/features/settings/presentation/pages/settings_page.dart
@@ -26,186 +26,288 @@ class _SettingsPageState extends ConsumerState<SettingsPage> {
     final settings = ref.watch(settingsProvider);
     final profile = ref.watch(accountProfileProvider);
     final theme = Theme.of(context);
-    final cardColor = theme.cardTheme.color ?? AppColors.surface;
+    final isDark = theme.brightness == Brightness.dark;
+    final cardColor = isDark ? AppColors.surface : Colors.white;
+    final subtitleColor = isDark ? AppColors.textSecondary : Colors.grey[600];
 
     return Scaffold(
-      appBar: AppBar(
-        title: const Text('设置'),
-      ),
+      appBar: AppBar(title: const Text('设置')),
       body: ListView(
-        padding: const EdgeInsets.all(16),
+        padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 12),
         children: [
-          // --- Profile Section ---
-          _SectionHeader(title: '个人信息'),
-          const SizedBox(height: 8),
-          Card(
-            color: cardColor,
-            child: Column(
-              children: [
-                ListTile(
-                  leading: CircleAvatar(
-                    backgroundColor: theme.colorScheme.primary,
-                    child: Text(
-                      profile.displayName.isNotEmpty
-                          ? profile.displayName[0].toUpperCase()
-                          : '?',
-                      style: const TextStyle(
-                          color: Colors.white, fontWeight: FontWeight.bold),
-                    ),
-                  ),
-                  title: Text(
-                    profile.displayName.isNotEmpty
-                        ? profile.displayName
-                        : '加载中...',
-                  ),
-                  subtitle: Text(profile.email),
-                  trailing: IconButton(
-                    icon: const Icon(Icons.edit),
-                    onPressed: () => _showEditNameDialog(profile.displayName),
-                  ),
-                ),
-                const Divider(height: 1),
-                ListTile(
-                  leading: const Icon(Icons.lock_outline),
-                  title: const Text('修改密码'),
-                  trailing: const Icon(Icons.chevron_right),
-                  onTap: _showChangePasswordSheet,
-                ),
-              ],
-            ),
-          ),
-          const SizedBox(height: 20),
+          // ===== Profile Card (large, like WeChat/Feishu) =====
+          _buildProfileCard(profile, theme, cardColor, subtitleColor),
+          const SizedBox(height: 24),
 
-          // --- Appearance Section ---
-          _SectionHeader(title: '外观'),
-          const SizedBox(height: 8),
-          Card(
-            color: cardColor,
-            child: Padding(
-              padding: const EdgeInsets.all(16),
-              child: SegmentedButton<ThemeMode>(
-                segments: const [
-                  ButtonSegment(
-                      value: ThemeMode.dark,
-                      label: Text('深色'),
-                      icon: Icon(Icons.dark_mode)),
-                  ButtonSegment(
-                      value: ThemeMode.light,
-                      label: Text('浅色'),
-                      icon: Icon(Icons.light_mode)),
-                  ButtonSegment(
-                      value: ThemeMode.system,
-                      label: Text('跟随系统'),
-                      icon: Icon(Icons.settings_brightness)),
-                ],
-                selected: {settings.themeMode},
-                onSelectionChanged: (modes) {
-                  ref
-                      .read(settingsProvider.notifier)
-                      .setThemeMode(modes.first);
-                },
+          // ===== General Group =====
+          _SettingsGroup(
+            cardColor: cardColor,
+            children: [
+              _SettingsRow(
+                icon: Icons.palette_outlined,
+                iconBg: const Color(0xFF6366F1),
+                title: '外观主题',
+                trailing: _ThemeLabel(mode: settings.themeMode),
+                onTap: () => _showThemePicker(settings.themeMode),
               ),
-            ),
+              _SettingsRow(
+                icon: Icons.language,
+                iconBg: const Color(0xFF3B82F6),
+                title: '语言',
+                trailing: Text('简体中文',
+                    style: TextStyle(color: subtitleColor, fontSize: 14)),
+              ),
+            ],
           ),
-          const SizedBox(height: 20),
+          const SizedBox(height: 24),
 
-          // --- Notifications Section ---
-          _SectionHeader(title: '通知'),
-          const SizedBox(height: 8),
-          Card(
-            color: cardColor,
-            child: Column(
-              children: [
-                SwitchListTile(
-                  secondary: const Icon(Icons.notifications_outlined),
-                  title: const Text('推送通知'),
-                  value: settings.notificationsEnabled,
-                  onChanged: (v) {
-                    ref
-                        .read(settingsProvider.notifier)
-                        .setNotificationsEnabled(v);
-                  },
-                ),
-                const Divider(height: 1),
-                SwitchListTile(
-                  secondary: const Icon(Icons.volume_up_outlined),
-                  title: const Text('提示音'),
-                  value: settings.soundEnabled,
-                  onChanged: settings.notificationsEnabled
-                      ? (v) => ref
-                          .read(settingsProvider.notifier)
-                          .setSoundEnabled(v)
-                      : null,
-                ),
-                const Divider(height: 1),
-                SwitchListTile(
-                  secondary: const Icon(Icons.vibration),
-                  title: const Text('震动反馈'),
-                  value: settings.hapticFeedback,
-                  onChanged: settings.notificationsEnabled
-                      ? (v) => ref
-                          .read(settingsProvider.notifier)
-                          .setHapticFeedback(v)
-                      : null,
-                ),
-              ],
-            ),
+          // ===== Notifications Group =====
+          _SettingsGroup(
+            cardColor: cardColor,
+            children: [
+              _SettingsToggleRow(
+                icon: Icons.notifications_outlined,
+                iconBg: const Color(0xFFEF4444),
+                title: '推送通知',
+                value: settings.notificationsEnabled,
+                onChanged: (v) =>
+                    ref.read(settingsProvider.notifier).setNotificationsEnabled(v),
+              ),
+              _SettingsToggleRow(
+                icon: Icons.volume_up_outlined,
+                iconBg: const Color(0xFFF59E0B),
+                title: '提示音',
+                value: settings.soundEnabled,
+                onChanged: settings.notificationsEnabled
+                    ? (v) =>
+                        ref.read(settingsProvider.notifier).setSoundEnabled(v)
+                    : null,
+              ),
+              _SettingsToggleRow(
+                icon: Icons.vibration,
+                iconBg: const Color(0xFF22C55E),
+                title: '震动反馈',
+                value: settings.hapticFeedback,
+                onChanged: settings.notificationsEnabled
+                    ? (v) =>
+                        ref.read(settingsProvider.notifier).setHapticFeedback(v)
+                    : null,
+              ),
+            ],
           ),
-          const SizedBox(height: 20),
+          const SizedBox(height: 24),
 
-          // --- About Section ---
-          _SectionHeader(title: '关于'),
-          const SizedBox(height: 8),
-          Card(
-            color: cardColor,
-            child: Column(
-              children: [
-                const ListTile(
-                  leading: Icon(Icons.info_outline),
-                  title: Text('应用版本'),
-                  subtitle: Text('iAgent v1.0.0'),
-                ),
-                if (settings.selectedTenantName != null) ...[
-                  const Divider(height: 1),
-                  ListTile(
-                    leading: const Icon(Icons.business),
-                    title: const Text('租户'),
-                    subtitle: Text(settings.selectedTenantName!),
-                  ),
-                ],
-              ],
-            ),
+          // ===== Security Group =====
+          _SettingsGroup(
+            cardColor: cardColor,
+            children: [
+              _SettingsRow(
+                icon: Icons.lock_outline,
+                iconBg: const Color(0xFF8B5CF6),
+                title: '修改密码',
+                onTap: _showChangePasswordSheet,
+              ),
+            ],
           ),
-          const SizedBox(height: 20),
+          const SizedBox(height: 24),
 
-          // --- Logout ---
-          Card(
-            color: cardColor,
-            child: ListTile(
-              leading: const Icon(Icons.logout, color: Colors.red),
-              title: const Text('退出登录',
-                  style: TextStyle(color: Colors.red)),
-              onTap: () => _confirmLogout(),
-            ),
+          // ===== About Group =====
+          _SettingsGroup(
+            cardColor: cardColor,
+            children: [
+              _SettingsRow(
+                icon: Icons.info_outline,
+                iconBg: const Color(0xFF64748B),
+                title: '版本',
+                trailing: Text('v1.0.0',
+                    style: TextStyle(color: subtitleColor, fontSize: 14)),
+              ),
+              if (settings.selectedTenantName != null)
+                _SettingsRow(
+                  icon: Icons.business_outlined,
+                  iconBg: const Color(0xFF0EA5E9),
+                  title: '租户',
+                  trailing: Text(settings.selectedTenantName!,
+                      style: TextStyle(color: subtitleColor, fontSize: 14)),
+                ),
+            ],
           ),
           const SizedBox(height: 32),
+
+          // ===== Logout =====
+          SizedBox(
+            width: double.infinity,
+            child: OutlinedButton(
+              onPressed: _confirmLogout,
+              style: OutlinedButton.styleFrom(
+                foregroundColor: AppColors.error,
+                side: const BorderSide(color: AppColors.error, width: 1),
+                padding: const EdgeInsets.symmetric(vertical: 14),
+                shape: RoundedRectangleBorder(
+                    borderRadius: BorderRadius.circular(12)),
+              ),
+              child: const Text('退出登录', style: TextStyle(fontSize: 16)),
+            ),
+          ),
+          const SizedBox(height: 48),
         ],
       ),
     );
   }
 
+  // ---- Profile Card (top) ---------------------------------------------------
+
+  Widget _buildProfileCard(
+      AccountProfile profile, ThemeData theme, Color cardColor, Color? subtitleColor) {
+    final initial = profile.displayName.isNotEmpty
+        ? profile.displayName[0].toUpperCase()
+        : '?';
+
+    return Card(
+      color: cardColor,
+      elevation: 0,
+      shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(16)),
+      child: InkWell(
+        borderRadius: BorderRadius.circular(16),
+        onTap: () => _showEditNameDialog(profile.displayName),
+        child: Padding(
+          padding: const EdgeInsets.all(20),
+          child: Row(
+            children: [
+              // Avatar
+              Container(
+                width: 60,
+                height: 60,
+                decoration: BoxDecoration(
+                  gradient: const LinearGradient(
+                    colors: [Color(0xFF6366F1), Color(0xFF818CF8)],
+                    begin: Alignment.topLeft,
+                    end: Alignment.bottomRight,
+                  ),
+                  borderRadius: BorderRadius.circular(20),
+                ),
+                child: Center(
+                  child: Text(
+                    initial,
+                    style: const TextStyle(
+                      color: Colors.white,
+                      fontSize: 24,
+                      fontWeight: FontWeight.bold,
+                    ),
+                  ),
+                ),
+              ),
+              const SizedBox(width: 16),
+              // Name & email
+              Expanded(
+                child: Column(
+                  crossAxisAlignment: CrossAxisAlignment.start,
+                  children: [
+                    Text(
+                      profile.displayName.isNotEmpty
+                          ? profile.displayName
+                          : '加载中...',
+                      style: theme.textTheme.titleMedium?.copyWith(
+                        fontWeight: FontWeight.w600,
+                        fontSize: 18,
+                      ),
+                    ),
+                    const SizedBox(height: 4),
+                    Text(
+                      profile.email.isNotEmpty ? profile.email : ' ',
+                      style: TextStyle(color: subtitleColor, fontSize: 14),
+                    ),
+                  ],
+                ),
+              ),
+              Icon(Icons.chevron_right, color: subtitleColor),
+            ],
+          ),
+        ),
+      ),
+    );
+  }
+
+  // ---- Theme Picker ---------------------------------------------------------
+
+  void _showThemePicker(ThemeMode current) {
+    showModalBottomSheet(
+      context: context,
+      shape: const RoundedRectangleBorder(
+        borderRadius: BorderRadius.vertical(top: Radius.circular(20)),
+      ),
+      builder: (ctx) {
+        return SafeArea(
+          child: Column(
+            mainAxisSize: MainAxisSize.min,
+            children: [
+              const SizedBox(height: 12),
+              Container(
+                width: 40,
+                height: 4,
+                decoration: BoxDecoration(
+                  color: Colors.grey[400],
+                  borderRadius: BorderRadius.circular(2),
+                ),
+              ),
+              const SizedBox(height: 16),
+              Text('选择主题',
+                  style: Theme.of(ctx).textTheme.titleMedium?.copyWith(
+                        fontWeight: FontWeight.w600,
+                      )),
+              const SizedBox(height: 8),
+              _ThemeOption(
+                icon: Icons.dark_mode,
+                label: '深色模式',
+                selected: current == ThemeMode.dark,
+                onTap: () {
+                  ref.read(settingsProvider.notifier).setThemeMode(ThemeMode.dark);
+                  Navigator.pop(ctx);
+                },
+              ),
+              _ThemeOption(
+                icon: Icons.light_mode,
+                label: '浅色模式',
+                selected: current == ThemeMode.light,
+                onTap: () {
+                  ref.read(settingsProvider.notifier).setThemeMode(ThemeMode.light);
+                  Navigator.pop(ctx);
+                },
+              ),
+              _ThemeOption(
+                icon: Icons.settings_brightness,
+                label: '跟随系统',
+                selected: current == ThemeMode.system,
+                onTap: () {
+                  ref.read(settingsProvider.notifier).setThemeMode(ThemeMode.system);
+                  Navigator.pop(ctx);
+                },
+              ),
+              const SizedBox(height: 16),
+            ],
+          ),
+        );
+      },
+    );
+  }
+
+  // ---- Edit Name Dialog -----------------------------------------------------
+
   void _showEditNameDialog(String currentName) {
     final controller = TextEditingController(text: currentName);
     showDialog(
       context: context,
       builder: (ctx) => AlertDialog(
+        shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(16)),
         title: const Text('修改显示名称'),
         content: TextField(
           controller: controller,
           autofocus: true,
-          decoration: const InputDecoration(
+          decoration: InputDecoration(
             labelText: '显示名称',
             hintText: '输入新的显示名称',
+            border:
+                OutlineInputBorder(borderRadius: BorderRadius.circular(12)),
           ),
         ),
         actions: [
@@ -223,9 +325,7 @@ class _SettingsPageState extends ConsumerState<SettingsPage> {
                   .updateDisplayName(name);
               if (mounted) {
                 ScaffoldMessenger.of(context).showSnackBar(
-                  SnackBar(
-                    content: Text(success ? '名称已更新' : '更新失败'),
-                  ),
+                  SnackBar(content: Text(success ? '名称已更新' : '更新失败')),
                 );
               }
             },
@@ -236,6 +336,8 @@ class _SettingsPageState extends ConsumerState<SettingsPage> {
     );
   }
 
+  // ---- Change Password Sheet ------------------------------------------------
+
   void _showChangePasswordSheet() {
     final currentCtrl = TextEditingController();
     final newCtrl = TextEditingController();
@@ -244,38 +346,72 @@ class _SettingsPageState extends ConsumerState<SettingsPage> {
     showModalBottomSheet(
       context: context,
       isScrollControlled: true,
+      shape: const RoundedRectangleBorder(
+        borderRadius: BorderRadius.vertical(top: Radius.circular(20)),
+      ),
       builder: (ctx) => Padding(
         padding: EdgeInsets.fromLTRB(
-          24,
-          24,
-          24,
-          MediaQuery.of(ctx).viewInsets.bottom + 24,
-        ),
+            24, 24, 24, MediaQuery.of(ctx).viewInsets.bottom + 24),
         child: Column(
           mainAxisSize: MainAxisSize.min,
           crossAxisAlignment: CrossAxisAlignment.stretch,
           children: [
-            Text('修改密码', style: Theme.of(ctx).textTheme.titleLarge),
+            Center(
+              child: Container(
+                width: 40,
+                height: 4,
+                decoration: BoxDecoration(
+                  color: Colors.grey[400],
+                  borderRadius: BorderRadius.circular(2),
+                ),
+              ),
+            ),
             const SizedBox(height: 16),
+            Text('修改密码',
+                style: Theme.of(ctx)
+                    .textTheme
+                    .titleLarge
+                    ?.copyWith(fontWeight: FontWeight.w600)),
+            const SizedBox(height: 20),
             TextField(
               controller: currentCtrl,
               obscureText: true,
-              decoration: const InputDecoration(labelText: '当前密码'),
+              decoration: InputDecoration(
+                labelText: '当前密码',
+                prefixIcon: const Icon(Icons.lock_outline),
+                border: OutlineInputBorder(
+                    borderRadius: BorderRadius.circular(12)),
+              ),
             ),
-            const SizedBox(height: 12),
+            const SizedBox(height: 14),
             TextField(
               controller: newCtrl,
               obscureText: true,
-              decoration: const InputDecoration(labelText: '新密码'),
+              decoration: InputDecoration(
+                labelText: '新密码',
+                prefixIcon: const Icon(Icons.lock_reset),
+                border: OutlineInputBorder(
+                    borderRadius: BorderRadius.circular(12)),
+              ),
             ),
-            const SizedBox(height: 12),
+            const SizedBox(height: 14),
             TextField(
               controller: confirmCtrl,
               obscureText: true,
-              decoration: const InputDecoration(labelText: '确认新密码'),
+              decoration: InputDecoration(
+                labelText: '确认新密码',
+                prefixIcon: const Icon(Icons.lock_reset),
+                border: OutlineInputBorder(
+                    borderRadius: BorderRadius.circular(12)),
+              ),
             ),
-            const SizedBox(height: 20),
+            const SizedBox(height: 24),
             FilledButton(
+              style: FilledButton.styleFrom(
+                padding: const EdgeInsets.symmetric(vertical: 14),
+                shape: RoundedRectangleBorder(
+                    borderRadius: BorderRadius.circular(12)),
+              ),
               onPressed: () async {
                 if (newCtrl.text != confirmCtrl.text) {
                   ScaffoldMessenger.of(context).showSnackBar(
@@ -299,16 +435,14 @@ class _SettingsPageState extends ConsumerState<SettingsPage> {
                 if (mounted) {
                   ScaffoldMessenger.of(context).showSnackBar(
                     SnackBar(
-                      content: Text(
-                        result.success
-                            ? '密码已修改'
-                            : result.message ?? '修改失败',
-                      ),
+                      content: Text(result.success
+                          ? '密码已修改'
+                          : result.message ?? '修改失败'),
                     ),
                   );
                 }
               },
-              child: const Text('确认修改'),
+              child: const Text('确认修改', style: TextStyle(fontSize: 16)),
             ),
           ],
         ),
@@ -316,10 +450,13 @@ class _SettingsPageState extends ConsumerState<SettingsPage> {
     );
   }
 
+  // ---- Confirm Logout -------------------------------------------------------
+
   void _confirmLogout() async {
     final confirmed = await showDialog<bool>(
       context: context,
       builder: (ctx) => AlertDialog(
+        shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(16)),
         title: const Text('退出登录'),
         content: const Text('确定要退出登录吗？'),
         actions: [
@@ -328,6 +465,7 @@ class _SettingsPageState extends ConsumerState<SettingsPage> {
             child: const Text('取消'),
           ),
           FilledButton(
+            style: FilledButton.styleFrom(backgroundColor: AppColors.error),
             onPressed: () => Navigator.of(ctx).pop(true),
             child: const Text('退出'),
           ),
@@ -336,28 +474,172 @@ class _SettingsPageState extends ConsumerState<SettingsPage> {
     );
     if (confirmed == true) {
       await ref.read(authStateProvider.notifier).logout();
-      if (mounted) {
-        context.go('/login');
-      }
+      if (mounted) context.go('/login');
     }
   }
 }
 
-class _SectionHeader extends StatelessWidget {
-  final String title;
-  const _SectionHeader({required this.title});
+// =============================================================================
+// Reusable settings widgets
+// =============================================================================
+
+/// A group of settings rows wrapped in a rounded card.
+class _SettingsGroup extends StatelessWidget {
+  final Color cardColor;
+  final List<Widget> children;
+
+  const _SettingsGroup({required this.cardColor, required this.children});
 
   @override
   Widget build(BuildContext context) {
-    return Padding(
-      padding: const EdgeInsets.fromLTRB(16, 16, 16, 4),
-      child: Text(
-        title,
-        style: Theme.of(context).textTheme.titleSmall?.copyWith(
-              color: Theme.of(context).colorScheme.primary,
-              fontWeight: FontWeight.bold,
-            ),
+    return Card(
+      color: cardColor,
+      elevation: 0,
+      shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(16)),
+      clipBehavior: Clip.antiAlias,
+      child: Column(
+        children: [
+          for (int i = 0; i < children.length; i++) ...[
+            children[i],
+            if (i < children.length - 1)
+              Divider(
+                height: 1,
+                indent: 56,
+                color: Theme.of(context).dividerColor.withAlpha(80),
+              ),
+          ],
+        ],
       ),
     );
   }
 }
+
+/// A single settings row with icon, title, optional trailing, and tap action.
+class _SettingsRow extends StatelessWidget {
+  final IconData icon;
+  final Color iconBg;
+  final String title;
+  final Widget? trailing;
+  final VoidCallback? onTap;
+
+  const _SettingsRow({
+    required this.icon,
+    required this.iconBg,
+    required this.title,
+    this.trailing,
+    this.onTap,
+  });
+
+  @override
+  Widget build(BuildContext context) {
+    return ListTile(
+      leading: Container(
+        width: 32,
+        height: 32,
+        decoration: BoxDecoration(
+          color: iconBg,
+          borderRadius: BorderRadius.circular(8),
+        ),
+        child: Icon(icon, color: Colors.white, size: 18),
+      ),
+      title: Text(title),
+      trailing: Row(
+        mainAxisSize: MainAxisSize.min,
+        children: [
+          if (trailing != null) trailing!,
+          if (onTap != null) ...[
+            const SizedBox(width: 4),
+            Icon(Icons.chevron_right,
+                size: 20, color: Theme.of(context).hintColor),
+          ],
+        ],
+      ),
+      onTap: onTap,
+    );
+  }
+}
+
+/// A settings row with a switch toggle.
+class _SettingsToggleRow extends StatelessWidget {
+  final IconData icon;
+  final Color iconBg;
+  final String title;
+  final bool value;
+  final ValueChanged<bool>? onChanged;
+
+  const _SettingsToggleRow({
+    required this.icon,
+    required this.iconBg,
+    required this.title,
+    required this.value,
+    this.onChanged,
+  });
+
+  @override
+  Widget build(BuildContext context) {
+    return SwitchListTile(
+      secondary: Container(
+        width: 32,
+        height: 32,
+        decoration: BoxDecoration(
+          color: iconBg,
+          borderRadius: BorderRadius.circular(8),
+        ),
+        child: Icon(icon, color: Colors.white, size: 18),
+      ),
+      title: Text(title),
+      value: value,
+      onChanged: onChanged,
+    );
+  }
+}
+
+/// Label showing the current theme mode.
+class _ThemeLabel extends StatelessWidget {
+  final ThemeMode mode;
+  const _ThemeLabel({required this.mode});
+
+  @override
+  Widget build(BuildContext context) {
+    final label = switch (mode) {
+      ThemeMode.dark => '深色',
+      ThemeMode.light => '浅色',
+      ThemeMode.system => '跟随系统',
+    };
+    return Text(label,
+        style: TextStyle(color: Theme.of(context).hintColor, fontSize: 14));
+  }
+}
+
+/// Theme option in the bottom sheet picker.
+class _ThemeOption extends StatelessWidget {
+  final IconData icon;
+  final String label;
+  final bool selected;
+  final VoidCallback onTap;
+
+  const _ThemeOption({
+    required this.icon,
+    required this.label,
+    required this.selected,
+    required this.onTap,
+  });
+
+  @override
+  Widget build(BuildContext context) {
+    return ListTile(
+      leading: Icon(icon,
+          color: selected ? Theme.of(context).colorScheme.primary : null),
+      title: Text(label,
+          style: TextStyle(
+            fontWeight: selected ? FontWeight.w600 : FontWeight.normal,
+            color: selected ? Theme.of(context).colorScheme.primary : null,
+          )),
+      trailing: selected
+          ? Icon(Icons.check_circle,
+              color: Theme.of(context).colorScheme.primary)
+          : null,
+      onTap: onTap,
+    );
+  }
+}
diff --git a/it0_app/lib/features/standing_orders/presentation/pages/standing_orders_page.dart b/it0_app/lib/features/standing_orders/presentation/pages/standing_orders_page.dart
index 5ce4b1e..3337b2a 100644
--- a/it0_app/lib/features/standing_orders/presentation/pages/standing_orders_page.dart
+++ b/it0_app/lib/features/standing_orders/presentation/pages/standing_orders_page.dart
@@ -39,7 +39,7 @@ class StandingOrdersPage extends ConsumerWidget {
 
     return Scaffold(
       appBar: AppBar(
-        title: const Text('Standing Orders'),
+        title: const Text('常驻指令'),
         actions: [
           IconButton(
             icon: const Icon(Icons.refresh),
@@ -54,8 +54,8 @@ class StandingOrdersPage extends ConsumerWidget {
             if (orders.isEmpty) {
               return const EmptyState(
                 icon: Icons.rule_outlined,
-                title: 'No standing orders',
-                subtitle: 'Standing orders will appear here once configured',
+                title: '暂无常驻指令',
+                subtitle: '配置后常驻指令将显示在此处',
               );
             }
             return ListView.builder(
@@ -78,7 +78,7 @@ class StandingOrdersPage extends ConsumerWidget {
                       color: AppColors.error, size: 48),
                   const SizedBox(height: 12),
                   const Text(
-                    'Failed to load standing orders',
+                    '加载常驻指令失败',
                     style:
                         TextStyle(fontSize: 16, fontWeight: FontWeight.w600),
                   ),
@@ -94,7 +94,7 @@ class StandingOrdersPage extends ConsumerWidget {
                     onPressed: () =>
                         ref.invalidate(standingOrdersProvider),
                     icon: const Icon(Icons.refresh),
-                    label: const Text('Retry'),
+                    label: const Text('重试'),
                   ),
                 ],
               ),
@@ -145,7 +145,7 @@ class _StandingOrderCardState extends ConsumerState<_StandingOrderCard> {
 
     final lastExecLabel = lastExecution != null
         ? DateFormatter.timeAgo(DateTime.parse(lastExecution))
-        : 'Never';
+        : '从未执行';
 
     return Card(
       color: AppColors.surface,
@@ -236,7 +236,7 @@ class _StandingOrderCardState extends ConsumerState<_StandingOrderCard> {
                 childrenPadding:
                     const EdgeInsets.fromLTRB(14, 0, 14, 10),
                 title: Text(
-                  'Execution History (${executions.length})',
+                  '执行历史 (${executions.length})',
                   style: const TextStyle(
                       fontSize: 13, color: AppColors.textSecondary),
                 ),
@@ -264,7 +264,7 @@ class _StandingOrderCardState extends ConsumerState<_StandingOrderCard> {
       if (mounted) {
         ScaffoldMessenger.of(context).showSnackBar(
           SnackBar(
-            content: Text('Failed to update status: $e'),
+            content: Text('更新状态失败: $e'),
             backgroundColor: AppColors.error,
           ),
         );
diff --git a/it0_app/lib/features/tasks/presentation/pages/tasks_page.dart b/it0_app/lib/features/tasks/presentation/pages/tasks_page.dart
index 6cc804f..4094386 100644
--- a/it0_app/lib/features/tasks/presentation/pages/tasks_page.dart
+++ b/it0_app/lib/features/tasks/presentation/pages/tasks_page.dart
@@ -52,7 +52,7 @@ class TasksPage extends ConsumerWidget {
 
     return Scaffold(
       appBar: AppBar(
-        title: const Text('Operations Tasks'),
+        title: const Text('运维任务'),
         actions: [
           IconButton(
             icon: const Icon(Icons.refresh),
@@ -67,8 +67,8 @@ class TasksPage extends ConsumerWidget {
             if (tasks.isEmpty) {
               return const EmptyState(
                 icon: Icons.assignment_outlined,
-                title: 'No tasks yet',
-                subtitle: 'Tap + to create a new task',
+                title: '暂无任务',
+                subtitle: '点击 + 创建新任务',
               );
             }
             return ListView.builder(
@@ -90,7 +90,7 @@ class TasksPage extends ConsumerWidget {
                   const Icon(Icons.error_outline, color: AppColors.error, size: 48),
                   const SizedBox(height: 12),
                   Text(
-                    'Failed to load tasks',
+                    '加载任务失败',
                     style: const TextStyle(fontSize: 16, fontWeight: FontWeight.w600),
                   ),
                   const SizedBox(height: 6),
@@ -103,7 +103,7 @@ class TasksPage extends ConsumerWidget {
                   OutlinedButton.icon(
                     onPressed: () => ref.invalidate(tasksProvider),
                     icon: const Icon(Icons.refresh),
-                    label: const Text('Retry'),
+                    label: const Text('重试'),
                   ),
                 ],
               ),
@@ -291,7 +291,7 @@ class _CreateTaskSheetState extends State<_CreateTaskSheet> {
               ),
               const SizedBox(height: 16),
               const Text(
-                'New Task',
+                '新建任务',
                 style: TextStyle(fontSize: 20, fontWeight: FontWeight.bold),
               ),
               const SizedBox(height: 20),
@@ -300,11 +300,11 @@ class _CreateTaskSheetState extends State<_CreateTaskSheet> {
               TextFormField(
                 controller: _titleController,
                 decoration: const InputDecoration(
-                  labelText: 'Title',
-                  hintText: 'e.g. Restart nginx on web-01',
+                  labelText: '标题',
+                  hintText: '例如: 重启 web-01 的 nginx',
                   border: OutlineInputBorder(),
                 ),
-                validator: (v) => (v == null || v.trim().isEmpty) ? 'Title is required' : null,
+                validator: (v) => (v == null || v.trim().isEmpty) ? '请输入标题' : null,
                 textInputAction: TextInputAction.next,
               ),
               const SizedBox(height: 14),
@@ -313,8 +313,8 @@ class _CreateTaskSheetState extends State<_CreateTaskSheet> {
               TextFormField(
                 controller: _descriptionController,
                 decoration: const InputDecoration(
-                  labelText: 'Description',
-                  hintText: 'Optional details...',
+                  labelText: '描述',
+                  hintText: '可选详情...',
                   border: OutlineInputBorder(),
                 ),
                 maxLines: 3,
@@ -326,7 +326,7 @@ class _CreateTaskSheetState extends State<_CreateTaskSheet> {
               DropdownButtonFormField<String>(
                 value: _priority,
                 decoration: const InputDecoration(
-                  labelText: 'Priority',
+                  labelText: '优先级',
                   border: OutlineInputBorder(),
                 ),
                 items: _priorities
@@ -348,11 +348,11 @@ class _CreateTaskSheetState extends State<_CreateTaskSheet> {
                   return DropdownButtonFormField<String?>(
                     value: _selectedServerId,
                     decoration: const InputDecoration(
-                      labelText: 'Server (optional)',
+                      labelText: '服务器（可选）',
                       border: OutlineInputBorder(),
                     ),
                     items: [
-                      const DropdownMenuItem(value: null, child: Text('None')),
+                      const DropdownMenuItem(value: null, child: Text('不指定')),
                       ...servers.map((s) {
                         final id = s['id']?.toString() ?? '';
                         final name = s['hostname'] as String? ??
@@ -378,7 +378,7 @@ class _CreateTaskSheetState extends State<_CreateTaskSheet> {
                         height: 20,
                         child: CircularProgressIndicator(strokeWidth: 2, color: Colors.white),
                       )
-                    : const Text('Create Task'),
+                    : const Text('创建任务'),
               ),
               const SizedBox(height: 8),
             ],
@@ -413,7 +413,7 @@ class _CreateTaskSheetState extends State<_CreateTaskSheet> {
       if (mounted) {
         ScaffoldMessenger.of(context).showSnackBar(
           SnackBar(
-            content: Text('Failed to create task: $e'),
+            content: Text('创建任务失败: $e'),
             backgroundColor: AppColors.error,
           ),
         );
diff --git a/it0_app/lib/features/terminal/presentation/pages/terminal_page.dart b/it0_app/lib/features/terminal/presentation/pages/terminal_page.dart
index 8378301..744dd14 100644
--- a/it0_app/lib/features/terminal/presentation/pages/terminal_page.dart
+++ b/it0_app/lib/features/terminal/presentation/pages/terminal_page.dart
@@ -56,8 +56,8 @@ class _TerminalPageState extends ConsumerState<TerminalPage> {
     super.initState();
     _terminal = Terminal(maxLines: 10000);
     _terminal.onOutput = _onTerminalInput;
-    _terminal.write('iAgent Remote Terminal\r\n');
-    _terminal.write('Select a server and press Connect to begin.\r\n');
+    _terminal.write('iAgent 远程终端\r\n');
+    _terminal.write('请选择服务器并点击连接。\r\n');
   }
 
   @override
@@ -70,12 +70,12 @@ class _TerminalPageState extends ConsumerState<TerminalPage> {
 
   Future<void> _connect() async {
     if (_selectedServerId == null || _selectedServerId!.isEmpty) {
-      _terminal.write('\r\n\x1B[33m[!] Please select a server first.\x1B[0m\r\n');
+      _terminal.write('\r\n\x1B[33m[!] 请先选择服务器\x1B[0m\r\n');
       return;
     }
 
     setState(() => _status = _ConnectionStatus.connecting);
-    _terminal.write('\r\n\x1B[33m[*] Connecting to server $_selectedServerId...\x1B[0m\r\n');
+    _terminal.write('\r\n\x1B[33m[*] 正在连接服务器 $_selectedServerId...\x1B[0m\r\n');
 
     try {
       final config = ref.read(appConfigProvider);
@@ -106,12 +106,12 @@ class _TerminalPageState extends ConsumerState<TerminalPage> {
 
       if (mounted) {
         setState(() => _status = _ConnectionStatus.connected);
-        _terminal.write('\x1B[32m[+] Connected.\x1B[0m\r\n');
+        _terminal.write('\x1B[32m[+] 已连接\x1B[0m\r\n');
       }
     } catch (e) {
       if (mounted) {
         setState(() => _status = _ConnectionStatus.disconnected);
-        _terminal.write('\x1B[31m[-] Connection failed: $e\x1B[0m\r\n');
+        _terminal.write('\x1B[31m[-] 连接失败: $e\x1B[0m\r\n');
       }
     }
   }
@@ -148,14 +148,14 @@ class _TerminalPageState extends ConsumerState<TerminalPage> {
   void _onWsDone() {
     if (mounted) {
       setState(() => _status = _ConnectionStatus.disconnected);
-      _terminal.write('\r\n\x1B[33m[*] Connection closed.\x1B[0m\r\n');
+      _terminal.write('\r\n\x1B[33m[*] 连接已关闭\x1B[0m\r\n');
     }
   }
 
   void _onWsError(dynamic error) {
     if (mounted) {
       setState(() => _status = _ConnectionStatus.disconnected);
-      _terminal.write('\r\n\x1B[31m[-] WebSocket error: $error\x1B[0m\r\n');
+      _terminal.write('\r\n\x1B[31m[-] WebSocket 错误: $error\x1B[0m\r\n');
     }
   }
 
@@ -185,11 +185,11 @@ class _TerminalPageState extends ConsumerState<TerminalPage> {
   String get _statusLabel {
     switch (_status) {
       case _ConnectionStatus.connected:
-        return 'Connected';
+        return '已连接';
       case _ConnectionStatus.connecting:
-        return 'Connecting...';
+        return '连接中...';
       case _ConnectionStatus.disconnected:
-        return 'Disconnected';
+        return '未连接';
     }
   }
 
@@ -201,7 +201,7 @@ class _TerminalPageState extends ConsumerState<TerminalPage> {
 
     return Scaffold(
       appBar: AppBar(
-        title: const Text('Remote Terminal'),
+        title: const Text('远程终端'),
         actions: [
           // Connection status indicator
           Padding(
@@ -242,7 +242,7 @@ class _TerminalPageState extends ConsumerState<TerminalPage> {
               tooltip: 'Disconnect',
               onPressed: () {
                 _disconnect();
-                _terminal.write('\r\n\x1B[33m[*] Disconnected by user.\x1B[0m\r\n');
+                _terminal.write('\r\n\x1B[33m[*] 已断开连接\x1B[0m\r\n');
               },
             ),
         ],
@@ -262,7 +262,7 @@ class _TerminalPageState extends ConsumerState<TerminalPage> {
                     data: (servers) {
                       if (servers.isEmpty) {
                         return const Text(
-                          'No servers available',
+                          '暂无可用服务器',
                           style: TextStyle(
                             color: AppColors.textMuted,
                             fontSize: 14,
@@ -273,7 +273,7 @@ class _TerminalPageState extends ConsumerState<TerminalPage> {
                         child: DropdownButton<String>(
                           value: _selectedServerId,
                           hint: const Text(
-                            'Select a server...',
+                            '选择服务器...',
                             style: TextStyle(
                               color: AppColors.textMuted,
                               fontSize: 14,
@@ -317,7 +317,7 @@ class _TerminalPageState extends ConsumerState<TerminalPage> {
                         const SizedBox(width: 6),
                         Expanded(
                           child: Text(
-                            'Failed to load servers',
+                            '加载服务器失败',
                             style: const TextStyle(
                               color: AppColors.error,
                               fontSize: 13,
@@ -344,7 +344,7 @@ class _TerminalPageState extends ConsumerState<TerminalPage> {
                             ? () {
                                 _disconnect();
                                 _terminal.write(
-                                    '\r\n\x1B[33m[*] Disconnected by user.\x1B[0m\r\n');
+                                    '\r\n\x1B[33m[*] 已断开连接\x1B[0m\r\n');
                               }
                             : _connect,
                     icon: Icon(
@@ -355,10 +355,10 @@ class _TerminalPageState extends ConsumerState<TerminalPage> {
                     ),
                     label: Text(
                       _status == _ConnectionStatus.connected
-                          ? 'Disconnect'
+                          ? '断开'
                           : _status == _ConnectionStatus.connecting
-                              ? 'Connecting...'
-                              : 'Connect',
+                              ? '连接中...'
+                              : '连接',
                       style: const TextStyle(fontSize: 13),
                     ),
                   ),