diff --git a/it0_app/lib/features/profile/presentation/pages/profile_page.dart b/it0_app/lib/features/profile/presentation/pages/profile_page.dart
index 94f4f77..407bc3c 100644
--- a/it0_app/lib/features/profile/presentation/pages/profile_page.dart
+++ b/it0_app/lib/features/profile/presentation/pages/profile_page.dart
@@ -114,8 +114,10 @@ class _ProfilePageState extends ConsumerState<ProfilePage> {
                 icon: Icons.language,
                 iconBg: const Color(0xFF3B82F6),
                 title: l10n.languageLabel,
-                trailing: Text(l10n.languageZh,
-                    style: TextStyle(color: subtitleColor, fontSize: 14)),
+                trailing: Text(
+                  _languageDisplayLabel(settings.language, l10n),
+                  style: TextStyle(color: subtitleColor, fontSize: 14),
+                ),
               ),
             ],
           ),
@@ -350,6 +352,17 @@ class _ProfilePageState extends ConsumerState<ProfilePage> {
     );
   }
 
+  // ── Helpers ───────────────────────────────────────────────────────────────
+
+  String _languageDisplayLabel(String lang, AppLocalizations l10n) {
+    return switch (lang) {
+      'zh'    => l10n.languageZh,
+      'zh_TW' => l10n.languageZhTW,
+      'en'    => l10n.languageEn,
+      _       => l10n.languageAuto,
+    };
+  }
+
   // ── Pickers ───────────────────────────────────────────────────────────────
 
   void _showThemePicker(ThemeMode current) {
@@ -919,7 +932,7 @@ class _SettingsRow extends StatelessWidget {
       trailing: Row(
         mainAxisSize: MainAxisSize.min,
         children: [
-          if (trailing != null) trailing!,
+          if (trailing != null) Flexible(child: trailing!),
           if (onTap != null) ...[
             const SizedBox(width: 4),
             Icon(Icons.chevron_right,
diff --git a/it0_app/lib/features/referral/presentation/screens/referral_screen.dart b/it0_app/lib/features/referral/presentation/screens/referral_screen.dart
index 51d65d6..90a6124 100644
--- a/it0_app/lib/features/referral/presentation/screens/referral_screen.dart
+++ b/it0_app/lib/features/referral/presentation/screens/referral_screen.dart
@@ -39,9 +39,9 @@ class ReferralScreen extends ConsumerWidget {
             indicatorColor: AppColors.primary,
             labelColor: AppColors.primary,
             unselectedLabelColor: Colors.grey,
-            tabs: const [
-              Tab(text: '企业推荐'),
-              Tab(text: '我的圈子'),
+            tabs: [
+              Tab(text: l10n.referralTabTenant),
+              Tab(text: l10n.referralTabPersonal),
             ],
           ),
         ),
@@ -66,10 +66,11 @@ class _TenantReferralTab extends ConsumerWidget {
 
   @override
   Widget build(BuildContext context, WidgetRef ref) {
+    final l10n = AppLocalizations.of(context);
     final infoAsync = ref.watch(referralInfoProvider);
     return infoAsync.when(
       loading: () => const Center(child: CircularProgressIndicator()),
-      error: (e, _) => Center(child: Text('加载失败: $e')),
+      error: (e, _) => Center(child: Text('${l10n.loadFailed}: $e')),
       data: (info) => ListView(
         padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
         children: [
@@ -80,14 +81,14 @@ class _TenantReferralTab extends ConsumerWidget {
           _RewardRulesCard(cardColor: cardColor),
           const SizedBox(height: 20),
           _SectionHeader(
-            title: '推荐记录',
+            title: l10n.referralRecordsSection,
             onTap: () => Navigator.push(context,
                 MaterialPageRoute(builder: (_) => const _ReferralListPage())),
           ),
           _ReferralPreviewList(cardColor: cardColor),
           const SizedBox(height: 20),
           _SectionHeader(
-            title: '待结算奖励',
+            title: l10n.pendingRewardsSection,
             onTap: () => Navigator.push(context,
                 MaterialPageRoute(builder: (_) => const _RewardListPage())),
           ),
@@ -109,10 +110,11 @@ class _PersonalCircleTab extends ConsumerWidget {
 
   @override
   Widget build(BuildContext context, WidgetRef ref) {
+    final l10n = AppLocalizations.of(context);
     final infoAsync = ref.watch(userReferralInfoProvider);
     return infoAsync.when(
       loading: () => const Center(child: CircularProgressIndicator()),
-      error: (e, _) => Center(child: Text('加载失败: $e')),
+      error: (e, _) => Center(child: Text('${l10n.loadFailed}: $e')),
       data: (info) => ListView(
         padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
         children: [
@@ -123,14 +125,14 @@ class _PersonalCircleTab extends ConsumerWidget {
           _CircleRulesCard(cardColor: cardColor),
           const SizedBox(height: 20),
           _SectionHeader(
-            title: '我的圈子成员',
+            title: l10n.myCircleMembersSection,
             onTap: () => Navigator.push(context,
                 MaterialPageRoute(builder: (_) => const _CircleListPage())),
           ),
           _CirclePreviewList(cardColor: cardColor),
           const SizedBox(height: 20),
           _SectionHeader(
-            title: '积分记录',
+            title: l10n.pointsHistorySection,
             onTap: () => Navigator.push(context,
                 MaterialPageRoute(builder: (_) => const _PointsHistoryPage())),
           ),
@@ -152,6 +154,7 @@ class _UserCodeCard extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
+    final l10n = AppLocalizations.of(context);
     return Card(
       color: cardColor,
       elevation: 0,
@@ -161,9 +164,9 @@ class _UserCodeCard extends StatelessWidget {
         child: Column(
           crossAxisAlignment: CrossAxisAlignment.start,
           children: [
-            const Text(
-              '我的个人邀请码',
-              style: TextStyle(color: Colors.grey, fontSize: 13),
+            Text(
+              l10n.myPersonalInviteCode,
+              style: const TextStyle(color: Colors.grey, fontSize: 13),
             ),
             const SizedBox(height: 8),
             Row(
@@ -181,7 +184,7 @@ class _UserCodeCard extends StatelessWidget {
                 ),
                 IconButton(
                   icon: const Icon(Icons.copy, color: Color(0xFF7C3AED)),
-                  tooltip: '复制邀请码',
+                  tooltip: l10n.copyReferralCodeTooltip,
                   onPressed: () => _copy(context, info.code),
                 ),
               ],
@@ -192,7 +195,7 @@ class _UserCodeCard extends StatelessWidget {
                 Expanded(
                   child: OutlinedButton.icon(
                     icon: const Icon(Icons.link, size: 18),
-                    label: const Text('复制邀请链接'),
+                    label: Text(l10n.copyInviteLinkButton),
                     onPressed: () => _copy(context, info.shareUrl),
                     style: OutlinedButton.styleFrom(
                       foregroundColor: const Color(0xFF7C3AED),
@@ -206,7 +209,7 @@ class _UserCodeCard extends StatelessWidget {
                 Expanded(
                   child: FilledButton.icon(
                     icon: const Icon(Icons.share, size: 18),
-                    label: const Text('分享'),
+                    label: Text(l10n.shareButton),
                     onPressed: () => _share(context, info),
                     style: FilledButton.styleFrom(
                       backgroundColor: const Color(0xFF7C3AED),
@@ -224,11 +227,12 @@ class _UserCodeCard extends StatelessWidget {
   }
 
   void _copy(BuildContext context, String text) {
+    final l10n = AppLocalizations.of(context);
     Clipboard.setData(ClipboardData(text: text));
     ScaffoldMessenger.of(context).showSnackBar(
-      const SnackBar(
-          content: Text('已复制到剪贴板'),
-          duration: Duration(seconds: 2)),
+      SnackBar(
+          content: Text(l10n.copiedToClipboard),
+          duration: const Duration(seconds: 2)),
     );
   }
 
@@ -249,6 +253,7 @@ class _PointsBalanceCard extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
+    final l10n = AppLocalizations.of(context);
     return Card(
       color: cardColor,
       elevation: 0,
@@ -258,34 +263,34 @@ class _PointsBalanceCard extends StatelessWidget {
         child: Column(
           crossAxisAlignment: CrossAxisAlignment.start,
           children: [
-            const Row(
+            Row(
               children: [
-                Icon(Icons.stars_rounded, color: Color(0xFFF59E0B), size: 20),
-                SizedBox(width: 6),
-                Text('积分余额',
+                const Icon(Icons.stars_rounded, color: Color(0xFFF59E0B), size: 20),
+                const SizedBox(width: 6),
+                Text(l10n.pointsBalanceTitle,
                     style:
-                        TextStyle(fontWeight: FontWeight.w600, fontSize: 15)),
+                        const TextStyle(fontWeight: FontWeight.w600, fontSize: 15)),
               ],
             ),
             const SizedBox(height: 16),
             Row(
               children: [
                 _PointsStatItem(
-                  label: '当前余额',
+                  label: l10n.currentBalanceLabel,
                   value: '${info.pointsBalance}',
                   unit: 'pts',
                   color: const Color(0xFF7C3AED),
                 ),
                 const SizedBox(width: 12),
                 _PointsStatItem(
-                  label: '圈子成员',
+                  label: l10n.circleMembersCountLabel,
                   value: '${info.circleSize}',
                   unit: '人',
                   color: const Color(0xFF10B981),
                 ),
                 const SizedBox(width: 12),
                 _PointsStatItem(
-                  label: '累计获得',
+                  label: l10n.totalEarnedLabel,
                   value: '${info.totalEarned}',
                   unit: 'pts',
                   color: const Color(0xFF6366F1),
@@ -352,6 +357,7 @@ class _CircleRulesCard extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
+    final l10n = AppLocalizations.of(context);
     return Card(
       color: cardColor,
       elevation: 0,
@@ -361,51 +367,51 @@ class _CircleRulesCard extends StatelessWidget {
         child: Column(
           crossAxisAlignment: CrossAxisAlignment.start,
           children: [
-            const Row(
+            Row(
               children: [
-                Icon(Icons.people_alt_rounded,
+                const Icon(Icons.people_alt_rounded,
                     color: Color(0xFF7C3AED), size: 20),
-                SizedBox(width: 6),
-                Text('圈子奖励规则',
+                const SizedBox(width: 6),
+                Text(l10n.circleRewardRulesTitle,
                     style:
-                        TextStyle(fontWeight: FontWeight.w600, fontSize: 15)),
+                        const TextStyle(fontWeight: FontWeight.w600, fontSize: 15)),
               ],
             ),
             const SizedBox(height: 12),
             _RuleItem(
               icon: Icons.card_giftcard_rounded,
               color: const Color(0xFF7C3AED),
-              text: '新成员加入你的圈子，你和对方各获 200 积分欢迎礼',
+              text: l10n.circleRule1,
             ),
             const SizedBox(height: 8),
             _RuleItem(
               icon: Icons.star_rounded,
               color: const Color(0xFF6366F1),
-              text: '圈子成员订阅 Pro 时，你获 1500 pts，对方获 500 pts',
+              text: l10n.circleRule2,
             ),
             const SizedBox(height: 8),
             _RuleItem(
               icon: Icons.star_rounded,
               color: const Color(0xFF7C3AED),
-              text: '圈子成员订阅 Enterprise 时，你获 5000 pts，对方获 2000 pts',
+              text: l10n.circleRule3,
             ),
             const SizedBox(height: 8),
             _RuleItem(
               icon: Icons.repeat_rounded,
               color: const Color(0xFF10B981),
-              text: '每月续订时你持续获得付款额 10% 的积分，最长 12 个月',
+              text: l10n.circleRule4,
             ),
             const SizedBox(height: 8),
             _RuleItem(
               icon: Icons.account_tree_rounded,
               color: const Color(0xFFF59E0B),
-              text: '二级圈子续订，你获 5% 积分，最长 6 个月',
+              text: l10n.circleRule5,
             ),
             const SizedBox(height: 8),
             _RuleItem(
               icon: Icons.redeem_rounded,
               color: const Color(0xFF10B981),
-              text: '积分可兑换额外使用配额或解锁智能体',
+              text: l10n.circleRule6,
             ),
           ],
         ),
@@ -422,6 +428,7 @@ class _CirclePreviewList extends ConsumerWidget {
 
   @override
   Widget build(BuildContext context, WidgetRef ref) {
+    final l10n = AppLocalizations.of(context);
     final async = ref.watch(myCircleProvider);
     return async.when(
       loading: () => const SizedBox(
@@ -429,7 +436,7 @@ class _CirclePreviewList extends ConsumerWidget {
       error: (_, __) => const SizedBox.shrink(),
       data: (result) {
         if (result.items.isEmpty) {
-          return _EmptyCard(cardColor: cardColor, message: '暂无圈子成员，快去邀请好友吧！');
+          return _EmptyCard(cardColor: cardColor, message: l10n.noCircleMembersMessage);
         }
         final preview = result.items.take(3).toList();
         return Card(
@@ -453,16 +460,17 @@ class _CircleMemberTile extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
+    final l10n = AppLocalizations.of(context);
     final statusColor = member.isActive
         ? const Color(0xFF10B981)
         : member.status == 'EXPIRED'
             ? Colors.grey
             : const Color(0xFFF59E0B);
     final statusLabel = switch (member.status) {
-      'PENDING' => '待激活',
-      'ACTIVE' => '已激活',
-      'REWARDED' => '已奖励',
-      'EXPIRED' => '已过期',
+      'PENDING' => l10n.pendingPaymentStatus,
+      'ACTIVE' => l10n.activatedStatus,
+      'REWARDED' => l10n.rewardedStatus,
+      'EXPIRED' => l10n.expiredStatus,
       _ => member.status,
     };
     final levelLabel = member.level == 1 ? 'L1' : 'L2';
@@ -485,7 +493,7 @@ class _CircleMemberTile extends StatelessWidget {
         style: const TextStyle(fontSize: 14, fontWeight: FontWeight.w500),
       ),
       subtitle: Text(
-        '加入于 ${_formatDate(member.joinedAt)}',
+        '${l10n.joinedAtLabel} ${_formatDate(member.joinedAt)}',
         style: const TextStyle(fontSize: 12),
       ),
       trailing: Container(
@@ -517,6 +525,7 @@ class _PointsPreviewList extends ConsumerWidget {
 
   @override
   Widget build(BuildContext context, WidgetRef ref) {
+    final l10n = AppLocalizations.of(context);
     final async = ref.watch(myPointsProvider);
     return async.when(
       loading: () => const SizedBox(
@@ -524,7 +533,7 @@ class _PointsPreviewList extends ConsumerWidget {
       error: (_, __) => const SizedBox.shrink(),
       data: (result) {
         if (result.transactions.isEmpty) {
-          return _EmptyCard(cardColor: cardColor, message: '暂无积分记录');
+          return _EmptyCard(cardColor: cardColor, message: l10n.noPointsHistoryMessage);
         }
         final preview = result.transactions.take(3).toList();
         return Card(
@@ -589,14 +598,15 @@ class _CircleListPage extends ConsumerWidget {
 
   @override
   Widget build(BuildContext context, WidgetRef ref) {
+    final l10n = AppLocalizations.of(context);
     final async = ref.watch(myCircleProvider);
     return Scaffold(
-      appBar: AppBar(title: const Text('我的圈子')),
+      appBar: AppBar(title: Text(l10n.referralTabPersonal)),
       body: async.when(
         loading: () => const Center(child: CircularProgressIndicator()),
-        error: (e, _) => Center(child: Text('加载失败: $e')),
+        error: (e, _) => Center(child: Text('${l10n.loadFailed}: $e')),
         data: (result) => result.items.isEmpty
-            ? const Center(child: Text('暂无圈子成员'))
+            ? Center(child: Text(l10n.noCircleMembersMessage))
             : ListView.separated(
                 itemCount: result.items.length,
                 separatorBuilder: (_, __) => const Divider(height: 1),
@@ -613,14 +623,15 @@ class _PointsHistoryPage extends ConsumerWidget {
 
   @override
   Widget build(BuildContext context, WidgetRef ref) {
+    final l10n = AppLocalizations.of(context);
     final async = ref.watch(myPointsProvider);
     return Scaffold(
-      appBar: AppBar(title: const Text('积分记录')),
+      appBar: AppBar(title: Text(l10n.pointsHistorySection)),
       body: async.when(
         loading: () => const Center(child: CircularProgressIndicator()),
-        error: (e, _) => Center(child: Text('加载失败: $e')),
+        error: (e, _) => Center(child: Text('${l10n.loadFailed}: $e')),
         data: (result) => result.transactions.isEmpty
-            ? const Center(child: Text('暂无积分记录'))
+            ? Center(child: Text(l10n.noPointsHistoryMessage))
             : ListView.separated(
                 itemCount: result.transactions.length,
                 separatorBuilder: (_, __) => const Divider(height: 1),
@@ -862,25 +873,25 @@ class _RewardRulesCard extends StatelessWidget {
             _RuleItem(
               icon: Icons.star_rounded,
               color: const Color(0xFF6366F1),
-              text: '推荐 Pro 套餐：你获得 \$15 积分，对方获得 \$5 积分',
+              text: l10n.proReferralReward,
             ),
             const SizedBox(height: 8),
             _RuleItem(
               icon: Icons.star_rounded,
               color: const Color(0xFF7C3AED),
-              text: '推荐 Enterprise 套餐：你获得 \$50 积分，对方获得 \$20 积分',
+              text: l10n.enterpriseReferralReward,
             ),
             const SizedBox(height: 8),
             _RuleItem(
               icon: Icons.repeat_rounded,
               color: const Color(0xFF10B981),
-              text: '对方续订后，你持续获得每月付款额 10% 的积分，最长 12 个月',
+              text: l10n.renewalBonusReward,
             ),
             const SizedBox(height: 8),
             _RuleItem(
               icon: Icons.account_balance_wallet_outlined,
               color: const Color(0xFFF59E0B),
-              text: '积分自动抵扣你的下期账单',
+              text: l10n.creditDeductionReward,
             ),
           ],
         ),
@@ -919,13 +930,14 @@ class _SectionHeader extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
+    final l10n = AppLocalizations.of(context);
     return Row(
       mainAxisAlignment: MainAxisAlignment.spaceBetween,
       children: [
         Text(title,
             style: const TextStyle(
                 fontWeight: FontWeight.w600, fontSize: 16)),
-        TextButton(onPressed: onTap, child: const Text('查看全部')),
+        TextButton(onPressed: onTap, child: Text(l10n.viewAllButton)),
       ],
     );
   }
@@ -1132,7 +1144,7 @@ class _ReferralListPage extends ConsumerWidget {
       appBar: AppBar(title: Text(l10n.referralRecordsSection)),
       body: async.when(
         loading: () => const Center(child: CircularProgressIndicator()),
-        error: (e, _) => Center(child: Text('加载失败: $e')),
+        error: (e, _) => Center(child: Text('${l10n.loadFailed}: $e')),
         data: (result) => result.items.isEmpty
             ? Center(child: Text(l10n.noReferralsMessage))
             : ListView.separated(
@@ -1150,14 +1162,15 @@ class _RewardListPage extends ConsumerWidget {
 
   @override
   Widget build(BuildContext context, WidgetRef ref) {
+    final l10n = AppLocalizations.of(context);
     final async = ref.watch(allRewardsProvider);
     return Scaffold(
-      appBar: AppBar(title: const Text('奖励历史')),
+      appBar: AppBar(title: Text(l10n.rewardHistoryPageTitle)),
       body: async.when(
         loading: () => const Center(child: CircularProgressIndicator()),
-        error: (e, _) => Center(child: Text('加载失败: $e')),
+        error: (e, _) => Center(child: Text('${l10n.loadFailed}: $e')),
         data: (result) => result.items.isEmpty
-            ? const Center(child: Text('暂无奖励记录'))
+            ? Center(child: Text(l10n.noRewardsHistoryMessage))
             : ListView.separated(
                 itemCount: result.items.length,
                 separatorBuilder: (_, __) => const Divider(height: 1),
diff --git a/it0_app/lib/features/settings/data/datasources/settings_datasource.dart b/it0_app/lib/features/settings/data/datasources/settings_datasource.dart
index 07715a1..511c4ae 100644
--- a/it0_app/lib/features/settings/data/datasources/settings_datasource.dart
+++ b/it0_app/lib/features/settings/data/datasources/settings_datasource.dart
@@ -32,7 +32,7 @@ class SettingsDatasource {
       hapticFeedback: _prefs.getBool(_keyHaptic) ?? true,
       selectedTenantId: _prefs.getString(_keyTenantId),
       selectedTenantName: _prefs.getString(_keyTenantName),
-      language: _prefs.getString(_keyLanguage) ?? 'en',
+      language: _prefs.getString(_keyLanguage) ?? '',
       biometricEnabled: _prefs.getBool(_keyBiometric) ?? false,
       ttsVoice: _prefs.getString(_keyTtsVoice) ?? 'coral',
       ttsStyle: _prefs.getString(_keyTtsStyle) ?? '',
diff --git a/it0_app/lib/features/settings/presentation/providers/settings_providers.dart b/it0_app/lib/features/settings/presentation/providers/settings_providers.dart
index fb41116..8355bbd 100644
--- a/it0_app/lib/features/settings/presentation/providers/settings_providers.dart
+++ b/it0_app/lib/features/settings/presentation/providers/settings_providers.dart
@@ -225,11 +225,13 @@ final notificationsEnabledProvider = Provider<bool>((ref) {
   return ref.watch(settingsProvider).notificationsEnabled;
 });
 
-final localeProvider = Provider<Locale>((ref) {
+/// Returns null when language is '' (auto/system), letting Flutter pick the device locale.
+final localeProvider = Provider<Locale?>((ref) {
   final lang = ref.watch(settingsProvider).language;
   return switch (lang) {
     'zh_TW' => const Locale('zh', 'TW'),
+    'zh'    => const Locale('zh'),
     'en'    => const Locale('en'),
-    _       => const Locale('zh'),
+    _       => null, // '' or anything else → follow device locale
   };
 });
diff --git a/it0_app/lib/l10n/app_en.arb b/it0_app/lib/l10n/app_en.arb
index 9b6c18b..7748568 100644
--- a/it0_app/lib/l10n/app_en.arb
+++ b/it0_app/lib/l10n/app_en.arb
@@ -299,6 +299,32 @@
   "languageZh": "简体中文",
   "languageZhTW": "繁體中文",
   "languageEn": "English",
+  "languageAuto": "Auto (System)",
+  "referralTabTenant": "Enterprise",
+  "referralTabPersonal": "My Circle",
+  "loadFailed": "Load failed",
+  "myPersonalInviteCode": "My personal invite code",
+  "pointsBalanceTitle": "Points Balance",
+  "currentBalanceLabel": "Balance",
+  "circleMembersCountLabel": "Members",
+  "totalEarnedLabel": "Total Earned",
+  "circleRewardRulesTitle": "Circle Reward Rules",
+  "circleRule1": "New member joins your circle: both get 200 pts welcome gift",
+  "circleRule2": "Member subscribes Pro: you get 1500 pts, they get 500 pts",
+  "circleRule3": "Member subscribes Enterprise: you get 5000 pts, they get 2000 pts",
+  "circleRule4": "Earn 10% of their monthly payments for up to 12 months",
+  "circleRule5": "L2 circle renewals earn you 5% for up to 6 months",
+  "circleRule6": "Redeem points for usage quota or agent unlocks",
+  "myCircleMembersSection": "My Circle Members",
+  "pointsHistorySection": "Points History",
+  "noCircleMembersMessage": "No circle members yet. Invite friends!",
+  "noPointsHistoryMessage": "No points history",
+  "activatedStatus": "Activated",
+  "joinedAtLabel": "Joined",
+  "viewAllButton": "View all",
+  "rewardHistoryPageTitle": "Reward History",
+  "noRewardsHistoryMessage": "No rewards yet",
+  "creditDeductionReward": "Credits auto-deducted from your next bill",
   "selectLanguageTitle": "Select Language",
   "pushNotificationsLabel": "Push notifications",
   "soundLabel": "Sound",
diff --git a/it0_app/lib/l10n/app_localizations.dart b/it0_app/lib/l10n/app_localizations.dart
index ae11d5a..aee3939 100644
--- a/it0_app/lib/l10n/app_localizations.dart
+++ b/it0_app/lib/l10n/app_localizations.dart
@@ -1503,6 +1503,84 @@ abstract class AppLocalizations {
   /// **'English'**
   String get languageEn;
 
+  /// No description provided for @languageAuto.
+  String get languageAuto;
+
+  /// No description provided for @referralTabTenant.
+  String get referralTabTenant;
+
+  /// No description provided for @referralTabPersonal.
+  String get referralTabPersonal;
+
+  /// No description provided for @loadFailed.
+  String get loadFailed;
+
+  /// No description provided for @myPersonalInviteCode.
+  String get myPersonalInviteCode;
+
+  /// No description provided for @pointsBalanceTitle.
+  String get pointsBalanceTitle;
+
+  /// No description provided for @currentBalanceLabel.
+  String get currentBalanceLabel;
+
+  /// No description provided for @circleMembersCountLabel.
+  String get circleMembersCountLabel;
+
+  /// No description provided for @totalEarnedLabel.
+  String get totalEarnedLabel;
+
+  /// No description provided for @circleRewardRulesTitle.
+  String get circleRewardRulesTitle;
+
+  /// No description provided for @circleRule1.
+  String get circleRule1;
+
+  /// No description provided for @circleRule2.
+  String get circleRule2;
+
+  /// No description provided for @circleRule3.
+  String get circleRule3;
+
+  /// No description provided for @circleRule4.
+  String get circleRule4;
+
+  /// No description provided for @circleRule5.
+  String get circleRule5;
+
+  /// No description provided for @circleRule6.
+  String get circleRule6;
+
+  /// No description provided for @myCircleMembersSection.
+  String get myCircleMembersSection;
+
+  /// No description provided for @pointsHistorySection.
+  String get pointsHistorySection;
+
+  /// No description provided for @noCircleMembersMessage.
+  String get noCircleMembersMessage;
+
+  /// No description provided for @noPointsHistoryMessage.
+  String get noPointsHistoryMessage;
+
+  /// No description provided for @activatedStatus.
+  String get activatedStatus;
+
+  /// No description provided for @joinedAtLabel.
+  String get joinedAtLabel;
+
+  /// No description provided for @viewAllButton.
+  String get viewAllButton;
+
+  /// No description provided for @rewardHistoryPageTitle.
+  String get rewardHistoryPageTitle;
+
+  /// No description provided for @noRewardsHistoryMessage.
+  String get noRewardsHistoryMessage;
+
+  /// No description provided for @creditDeductionReward.
+  String get creditDeductionReward;
+
   /// No description provided for @selectLanguageTitle.
   ///
   /// In zh, this message translates to:
diff --git a/it0_app/lib/l10n/app_localizations_en.dart b/it0_app/lib/l10n/app_localizations_en.dart
index 2c397fc..65707fe 100644
--- a/it0_app/lib/l10n/app_localizations_en.dart
+++ b/it0_app/lib/l10n/app_localizations_en.dart
@@ -755,6 +755,84 @@ class AppLocalizationsEn extends AppLocalizations {
   @override
   String get languageEn => 'English';
 
+  @override
+  String get languageAuto => 'Auto (System)';
+
+  @override
+  String get referralTabTenant => 'Enterprise';
+
+  @override
+  String get referralTabPersonal => 'My Circle';
+
+  @override
+  String get loadFailed => 'Load failed';
+
+  @override
+  String get myPersonalInviteCode => 'My personal invite code';
+
+  @override
+  String get pointsBalanceTitle => 'Points Balance';
+
+  @override
+  String get currentBalanceLabel => 'Balance';
+
+  @override
+  String get circleMembersCountLabel => 'Members';
+
+  @override
+  String get totalEarnedLabel => 'Total Earned';
+
+  @override
+  String get circleRewardRulesTitle => 'Circle Reward Rules';
+
+  @override
+  String get circleRule1 => 'New member joins your circle: both get 200 pts welcome gift';
+
+  @override
+  String get circleRule2 => 'Member subscribes Pro: you get 1500 pts, they get 500 pts';
+
+  @override
+  String get circleRule3 => 'Member subscribes Enterprise: you get 5000 pts, they get 2000 pts';
+
+  @override
+  String get circleRule4 => 'Earn 10% of their monthly payments for up to 12 months';
+
+  @override
+  String get circleRule5 => 'L2 circle renewals earn you 5% for up to 6 months';
+
+  @override
+  String get circleRule6 => 'Redeem points for usage quota or agent unlocks';
+
+  @override
+  String get myCircleMembersSection => 'My Circle Members';
+
+  @override
+  String get pointsHistorySection => 'Points History';
+
+  @override
+  String get noCircleMembersMessage => 'No circle members yet. Invite friends!';
+
+  @override
+  String get noPointsHistoryMessage => 'No points history';
+
+  @override
+  String get activatedStatus => 'Activated';
+
+  @override
+  String get joinedAtLabel => 'Joined';
+
+  @override
+  String get viewAllButton => 'View all';
+
+  @override
+  String get rewardHistoryPageTitle => 'Reward History';
+
+  @override
+  String get noRewardsHistoryMessage => 'No rewards yet';
+
+  @override
+  String get creditDeductionReward => 'Credits auto-deducted from your next bill';
+
   @override
   String get selectLanguageTitle => 'Select Language';
 
diff --git a/it0_app/lib/l10n/app_localizations_zh.dart b/it0_app/lib/l10n/app_localizations_zh.dart
index d544724..879abf3 100644
--- a/it0_app/lib/l10n/app_localizations_zh.dart
+++ b/it0_app/lib/l10n/app_localizations_zh.dart
@@ -738,6 +738,84 @@ class AppLocalizationsZh extends AppLocalizations {
   @override
   String get languageEn => 'English';
 
+  @override
+  String get languageAuto => '自动（跟随系统）';
+
+  @override
+  String get referralTabTenant => '企业推荐';
+
+  @override
+  String get referralTabPersonal => '我的圈子';
+
+  @override
+  String get loadFailed => '加载失败';
+
+  @override
+  String get myPersonalInviteCode => '我的个人邀请码';
+
+  @override
+  String get pointsBalanceTitle => '积分余额';
+
+  @override
+  String get currentBalanceLabel => '当前余额';
+
+  @override
+  String get circleMembersCountLabel => '圈子成员';
+
+  @override
+  String get totalEarnedLabel => '累计获得';
+
+  @override
+  String get circleRewardRulesTitle => '圈子奖励规则';
+
+  @override
+  String get circleRule1 => '新成员加入你的圈子，你和对方各获 200 积分欢迎礼';
+
+  @override
+  String get circleRule2 => '圈子成员订阅 Pro 时，你获 1500 pts，对方获 500 pts';
+
+  @override
+  String get circleRule3 => '圈子成员订阅 Enterprise 时，你获 5000 pts，对方获 2000 pts';
+
+  @override
+  String get circleRule4 => '每月续订时你持续获得付款额 10% 的积分，最长 12 个月';
+
+  @override
+  String get circleRule5 => '二级圈子续订，你获 5% 积分，最长 6 个月';
+
+  @override
+  String get circleRule6 => '积分可兑换额外使用配额或解锁智能体';
+
+  @override
+  String get myCircleMembersSection => '我的圈子成员';
+
+  @override
+  String get pointsHistorySection => '积分记录';
+
+  @override
+  String get noCircleMembersMessage => '暂无圈子成员，快去邀请好友吧！';
+
+  @override
+  String get noPointsHistoryMessage => '暂无积分记录';
+
+  @override
+  String get activatedStatus => '已激活';
+
+  @override
+  String get joinedAtLabel => '加入于';
+
+  @override
+  String get viewAllButton => '查看全部';
+
+  @override
+  String get rewardHistoryPageTitle => '奖励历史';
+
+  @override
+  String get noRewardsHistoryMessage => '暂无奖励记录';
+
+  @override
+  String get creditDeductionReward => '积分自动抵扣你的下期账单';
+
   @override
   String get selectLanguageTitle => '选择语言';
 
@@ -1243,6 +1321,84 @@ class AppLocalizationsZhTw extends AppLocalizationsZh {
   @override
   String get languageEn => 'English';
 
+  @override
+  String get languageAuto => '自動（跟隨系統）';
+
+  @override
+  String get referralTabTenant => '企業推薦';
+
+  @override
+  String get referralTabPersonal => '我的圈子';
+
+  @override
+  String get loadFailed => '加載失敗';
+
+  @override
+  String get myPersonalInviteCode => '我的個人邀請碼';
+
+  @override
+  String get pointsBalanceTitle => '積分餘額';
+
+  @override
+  String get currentBalanceLabel => '當前餘額';
+
+  @override
+  String get circleMembersCountLabel => '圈子成員';
+
+  @override
+  String get totalEarnedLabel => '累計獲得';
+
+  @override
+  String get circleRewardRulesTitle => '圈子獎勵規則';
+
+  @override
+  String get circleRule1 => '新成員加入你的圈子，你和對方各獲 200 積分歡迎禮';
+
+  @override
+  String get circleRule2 => '圈子成員訂閱 Pro 時，你獲 1500 pts，對方獲 500 pts';
+
+  @override
+  String get circleRule3 => '圈子成員訂閱 Enterprise 時，你獲 5000 pts，對方獲 2000 pts';
+
+  @override
+  String get circleRule4 => '每月續訂時你持續獲得付款額 10% 的積分，最長 12 個月';
+
+  @override
+  String get circleRule5 => '二級圈子續訂，你獲 5% 積分，最長 6 個月';
+
+  @override
+  String get circleRule6 => '積分可兌換額外使用配額或解鎖智能體';
+
+  @override
+  String get myCircleMembersSection => '我的圈子成員';
+
+  @override
+  String get pointsHistorySection => '積分記錄';
+
+  @override
+  String get noCircleMembersMessage => '暫無圈子成員，快去邀請好友吧！';
+
+  @override
+  String get noPointsHistoryMessage => '暫無積分記錄';
+
+  @override
+  String get activatedStatus => '已激活';
+
+  @override
+  String get joinedAtLabel => '加入於';
+
+  @override
+  String get viewAllButton => '查看全部';
+
+  @override
+  String get rewardHistoryPageTitle => '獎勵歷史';
+
+  @override
+  String get noRewardsHistoryMessage => '暫無獎勵記錄';
+
+  @override
+  String get creditDeductionReward => '積分自動抵扣下期賬單';
+
   @override
   String get selectLanguageTitle => '選擇語言';
 
diff --git a/it0_app/lib/l10n/app_zh.arb b/it0_app/lib/l10n/app_zh.arb
index c734197..6c9a5c1 100644
--- a/it0_app/lib/l10n/app_zh.arb
+++ b/it0_app/lib/l10n/app_zh.arb
@@ -299,6 +299,32 @@
   "languageZh": "简体中文",
   "languageZhTW": "繁體中文",
   "languageEn": "English",
+  "languageAuto": "自动（跟随系统）",
+  "referralTabTenant": "企业推荐",
+  "referralTabPersonal": "我的圈子",
+  "loadFailed": "加载失败",
+  "myPersonalInviteCode": "我的个人邀请码",
+  "pointsBalanceTitle": "积分余额",
+  "currentBalanceLabel": "当前余额",
+  "circleMembersCountLabel": "圈子成员",
+  "totalEarnedLabel": "累计获得",
+  "circleRewardRulesTitle": "圈子奖励规则",
+  "circleRule1": "新成员加入你的圈子，你和对方各获 200 积分欢迎礼",
+  "circleRule2": "圈子成员订阅 Pro 时，你获 1500 pts，对方获 500 pts",
+  "circleRule3": "圈子成员订阅 Enterprise 时，你获 5000 pts，对方获 2000 pts",
+  "circleRule4": "每月续订时你持续获得付款额 10% 的积分，最长 12 个月",
+  "circleRule5": "二级圈子续订，你获 5% 积分，最长 6 个月",
+  "circleRule6": "积分可兑换额外使用配额或解锁智能体",
+  "myCircleMembersSection": "我的圈子成员",
+  "pointsHistorySection": "积分记录",
+  "noCircleMembersMessage": "暂无圈子成员，快去邀请好友吧！",
+  "noPointsHistoryMessage": "暂无积分记录",
+  "activatedStatus": "已激活",
+  "joinedAtLabel": "加入于",
+  "viewAllButton": "查看全部",
+  "rewardHistoryPageTitle": "奖励历史",
+  "noRewardsHistoryMessage": "暂无奖励记录",
+  "creditDeductionReward": "积分自动抵扣你的下期账单",
   "selectLanguageTitle": "选择语言",
   "pushNotificationsLabel": "推送通知",
   "soundLabel": "提示音",
diff --git a/it0_app/lib/l10n/app_zh_TW.arb b/it0_app/lib/l10n/app_zh_TW.arb
index ce1ed9a..61b4f64 100644
--- a/it0_app/lib/l10n/app_zh_TW.arb
+++ b/it0_app/lib/l10n/app_zh_TW.arb
@@ -44,6 +44,32 @@
   "languageZh": "簡體中文",
   "languageZhTW": "繁體中文",
   "languageEn": "English",
+  "languageAuto": "自動（跟隨系統）",
+  "referralTabTenant": "企業推薦",
+  "referralTabPersonal": "我的圈子",
+  "loadFailed": "加載失敗",
+  "myPersonalInviteCode": "我的個人邀請碼",
+  "pointsBalanceTitle": "積分餘額",
+  "currentBalanceLabel": "當前餘額",
+  "circleMembersCountLabel": "圈子成員",
+  "totalEarnedLabel": "累計獲得",
+  "circleRewardRulesTitle": "圈子獎勵規則",
+  "circleRule1": "新成員加入你的圈子，你和對方各獲 200 積分歡迎禮",
+  "circleRule2": "圈子成員訂閱 Pro 時，你獲 1500 pts，對方獲 500 pts",
+  "circleRule3": "圈子成員訂閱 Enterprise 時，你獲 5000 pts，對方獲 2000 pts",
+  "circleRule4": "每月續訂時你持續獲得付款額 10% 的積分，最長 12 個月",
+  "circleRule5": "二級圈子續訂，你獲 5% 積分，最長 6 個月",
+  "circleRule6": "積分可兌換額外使用配額或解鎖智能體",
+  "myCircleMembersSection": "我的圈子成員",
+  "pointsHistorySection": "積分記錄",
+  "noCircleMembersMessage": "暫無圈子成員，快去邀請好友吧！",
+  "noPointsHistoryMessage": "暫無積分記錄",
+  "activatedStatus": "已激活",
+  "joinedAtLabel": "加入於",
+  "viewAllButton": "查看全部",
+  "rewardHistoryPageTitle": "獎勵歷史",
+  "noRewardsHistoryMessage": "暫無獎勵記錄",
+  "creditDeductionReward": "積分自動抵扣下期賬單",
   "selectLanguageTitle": "選擇語言",
 
   "chatStartConversationPrompt": "開始與 我智能體 對話",