diff --git a/frontend/mobile-app/lib/core/constants/api_endpoints.dart b/frontend/mobile-app/lib/core/constants/api_endpoints.dart
index b05eee17..d1e2b6af 100644
--- a/frontend/mobile-app/lib/core/constants/api_endpoints.dart
+++ b/frontend/mobile-app/lib/core/constants/api_endpoints.dart
@@ -1,38 +1,39 @@
+/// API 端点常量
+///
+/// 注意: 这些路径不包含 /api/v1 前缀，因为 AppConfig.apiBaseUrl 已经包含了
+/// 例如 baseUrl = 'https://rwaapi.szaiai.com/api/v1'
 class ApiEndpoints {
   ApiEndpoints._();
 
-  // Base URL - 生产环境
+  // Base URL - 生产环境 (仅供参考，实际使用 AppConfig)
   static const String baseUrl = 'https://rwaapi.szaiai.com';
   // Base URL - 开发环境
   static const String baseUrlDev = 'https://rwaapi-dev.szaiai.com';
 
-  // API 版本前缀
-  static const String apiPrefix = '/api/v1';
-
   // Auth (-> Identity Service)
-  static const String auth = '$apiPrefix/auth';
+  static const String auth = '/auth';
   static const String login = '$auth/login';
   static const String register = '$auth/register';
   static const String refreshToken = '$auth/refresh';
   static const String logout = '$auth/logout';
 
   // User (-> Identity Service)
-  static const String user = '$apiPrefix/user';
+  static const String user = '/user';
   static const String autoCreate = '$user/auto-create';
   static const String userWallet = '$user/wallet';  // 获取钱包状态
-  static const String me = '$apiPrefix/me';  // 获取当前用户完整信息
+  static const String me = '/me';  // 获取当前用户完整信息
   static const String profile = '$user/profile';
   static const String updateProfile = '$user/profile/update';
   static const String updateAvatar = '$user/avatar';
 
   // Wallet (-> Wallet Service)
-  static const String wallet = '$apiPrefix/wallet';
+  static const String wallet = '/wallet';
   static const String createWallet = '$wallet/create';
   static const String importWallet = '$wallet/import';
   static const String balance = '$wallet/balance';
 
   // Mining (-> Reward Service)
-  static const String mining = '$apiPrefix/mining';
+  static const String mining = '/mining';
   static const String miningStatus = '$mining/status';
   static const String startMining = '$mining/start';
   static const String stopMining = '$mining/stop';
@@ -40,33 +41,33 @@ class ApiEndpoints {
   static const String hashPower = '$mining/hash-power';
 
   // Ranking (-> Leaderboard Service)
-  static const String ranking = '$apiPrefix/ranking';
+  static const String ranking = '/ranking';
   static const String dailyRanking = '$ranking/daily';
   static const String weeklyRanking = '$ranking/weekly';
   static const String monthlyRanking = '$ranking/monthly';
 
   // Trading (-> Wallet Service)
-  static const String trading = '$apiPrefix/trading';
+  static const String trading = '/trading';
   static const String exchange = '$trading/exchange';
   static const String settlement = '$trading/settlement';
   static const String transactions = '$trading/transactions';
 
   // Deposit (-> Wallet Service)
-  static const String deposit = '$apiPrefix/deposit';
+  static const String deposit = '/deposit';
   static const String depositAddress = '$deposit/address';
   static const String confirmDeposit = '$deposit/confirm';
   static const String depositRecords = '$deposit/records';
 
   // Planting (-> Planting Service)
-  static const String planting = '$apiPrefix/planting';
+  static const String planting = '/planting';
   static const String plantingPrice = '$planting/price';
   static const String submitPlanting = '$planting/submit';
   static const String provinces = '$planting/provinces';
   static const String cities = '$planting/cities';
 
   // Community & Referral (-> Referral Service)
-  static const String community = '$apiPrefix/community';
-  static const String referral = '$apiPrefix/referral';
+  static const String community = '/community';
+  static const String referral = '/referral';
   static const String referralMe = '$referral/me';  // 获取当前用户推荐信息
   static const String referralDirects = '$referral/me/direct-referrals';  // 获取直推列表
   static const String referralList = '$community/referrals';
@@ -75,11 +76,11 @@ class ApiEndpoints {
   static const String generateReferralLink = '$referral/generate-link';
 
   // Authorization (-> Authorization Service)
-  static const String authorizations = '$apiPrefix/authorizations';
+  static const String authorizations = '/authorizations';
   static const String myAuthorizations = '$authorizations/my';  // 获取我的授权列表
 
   // Telemetry (-> Reporting Service)
-  static const String telemetry = '$apiPrefix/telemetry';
+  static const String telemetry = '/telemetry';
   static const String telemetrySession = '$telemetry/session';
   static const String telemetryHeartbeat = '$telemetry/heartbeat';
   static const String telemetryEvents = '$telemetry/events';
diff --git a/frontend/mobile-app/lib/features/auth/presentation/pages/guide_page.dart b/frontend/mobile-app/lib/features/auth/presentation/pages/guide_page.dart
index 845390a6..90e9e1af 100644
--- a/frontend/mobile-app/lib/features/auth/presentation/pages/guide_page.dart
+++ b/frontend/mobile-app/lib/features/auth/presentation/pages/guide_page.dart
@@ -146,50 +146,45 @@ class _GuidePageState extends ConsumerState<GuidePage> {
   }
 
   /// 构建向导页 (页面1-4) - 全屏背景图片，无文字
-  /// 使用 BoxFit.fitWidth 保持图片原始比例，不拉伸文字
+  /// 使用 BoxFit.cover 填满屏幕，保持宽高比（会裁剪超出部分）
   Widget _buildGuidePage(GuidePageData data, int index) {
     debugPrint('[GuidePage] _buildGuidePage() - 页面 ${index + 1}, 图片: ${data.imagePath}');
-    return Container(
-      color: Colors.black, // 如果图片不够高，上下用黑色填充
-      child: Stack(
-        fit: StackFit.expand,
-        children: [
-          // 全屏背景图片 - 使用 fitWidth 保持宽高比
-          if (data.imagePath != null)
-            LayoutBuilder(
-              builder: (context, constraints) {
-                debugPrint('[GuidePage] 页面 ${index + 1} 容器尺寸: ${constraints.maxWidth.toStringAsFixed(1)} x ${constraints.maxHeight.toStringAsFixed(1)}');
-                debugPrint('[GuidePage] 页面 ${index + 1} 使用 BoxFit.fitWidth');
-                return Center(
-                  child: Image.asset(
-                    data.imagePath!,
-                    fit: BoxFit.fitWidth,
-                    width: double.infinity,
-                    errorBuilder: (context, error, stackTrace) {
-                      debugPrint('[GuidePage] 页面 ${index + 1} 图片加载失败: $error');
-                      return Container(
-                        color: const Color(0xFFFFF8E7),
-                        child: _buildPlaceholderImage(index),
-                      );
-                    },
-                  ),
-                );
-              },
-            )
-          else
-            Container(
-              color: const Color(0xFFFFF8E7),
-              child: _buildPlaceholderImage(index),
-            ),
-          // 底部页面指示器
-          Positioned(
-            left: 0,
-            right: 0,
-            bottom: 80.h,
-            child: _buildPageIndicator(),
+    return Stack(
+      fit: StackFit.expand,
+      children: [
+        // 全屏背景图片 - 使用 cover 填满屏幕
+        if (data.imagePath != null)
+          Image.asset(
+            data.imagePath!,
+            fit: BoxFit.cover,
+            width: double.infinity,
+            height: double.infinity,
+            errorBuilder: (context, error, stackTrace) {
+              debugPrint('[GuidePage] 页面 ${index + 1} 图片加载失败: $error');
+              return Container(
+                color: const Color(0xFFFFF8E7),
+                child: _buildPlaceholderImage(index),
+              );
+            },
+          )
+        else
+          Container(
+            color: const Color(0xFFFFF8E7),
+            child: _buildPlaceholderImage(index),
           ),
-        ],
-      ),
+        // 底部页面指示器 - 使用 SafeArea 避免被系统 UI 遮挡
+        Positioned(
+          left: 0,
+          right: 0,
+          bottom: 0,
+          child: SafeArea(
+            child: Padding(
+              padding: EdgeInsets.only(bottom: 40.h),
+              child: _buildPageIndicator(),
+            ),
+          ),
+        ),
+      ],
     );
   }
 
@@ -423,42 +418,39 @@ class _WelcomePageContentState extends ConsumerState<_WelcomePageContent> {
   Widget build(BuildContext context) {
     return GestureDetector(
       onTap: () => FocusScope.of(context).unfocus(),
-      child: Container(
-        color: Colors.black, // 如果图片不够高，上下用黑色填充
-        child: Stack(
-          fit: StackFit.expand,
-          children: [
-            // 全屏背景图片 - 使用 fitWidth 保持宽高比
-            if (widget.backgroundImage != null)
-              Center(
-                child: Image.asset(
-                  widget.backgroundImage!,
-                  fit: BoxFit.fitWidth,
-                  width: double.infinity,
-                  errorBuilder: (context, error, stackTrace) {
-                    return Container(
-                      color: const Color(0xFFFFF8E7),
-                    );
-                  },
-                ),
-              )
-            else
-              Container(
-                color: const Color(0xFFFFF8E7),
-              ),
-            // 半透明遮罩，让内容更清晰
+      child: Stack(
+        fit: StackFit.expand,
+        children: [
+          // 全屏背景图片 - 使用 cover 填满屏幕
+          if (widget.backgroundImage != null)
+            Image.asset(
+              widget.backgroundImage!,
+              fit: BoxFit.cover,
+              width: double.infinity,
+              height: double.infinity,
+              errorBuilder: (context, error, stackTrace) {
+                return Container(
+                  color: const Color(0xFFFFF8E7),
+                );
+              },
+            )
+          else
             Container(
-              decoration: BoxDecoration(
-                gradient: LinearGradient(
-                  begin: Alignment.topCenter,
-                  end: Alignment.bottomCenter,
-                  colors: [
-                    Colors.black.withValues(alpha: 0.3),
-                    Colors.black.withValues(alpha: 0.6),
-                  ],
-                ),
+              color: const Color(0xFFFFF8E7),
+            ),
+          // 半透明遮罩，让内容更清晰
+          Container(
+            decoration: BoxDecoration(
+              gradient: LinearGradient(
+                begin: Alignment.topCenter,
+                end: Alignment.bottomCenter,
+                colors: [
+                  Colors.black.withValues(alpha: 0.3),
+                  Colors.black.withValues(alpha: 0.6),
+                ],
               ),
             ),
+          ),
           // 内容区域
           SafeArea(
             child: LayoutBuilder(
@@ -567,7 +559,6 @@ class _WelcomePageContentState extends ConsumerState<_WelcomePageContent> {
             ),
           ),
         ],
-        ),
       ),
     );
   }
diff --git a/frontend/mobile-app/lib/features/profile/presentation/pages/profile_page.dart b/frontend/mobile-app/lib/features/profile/presentation/pages/profile_page.dart
index 35b7657a..6503e3fa 100644
--- a/frontend/mobile-app/lib/features/profile/presentation/pages/profile_page.dart
+++ b/frontend/mobile-app/lib/features/profile/presentation/pages/profile_page.dart
@@ -637,18 +637,58 @@ class _ProfilePageState extends ConsumerState<ProfilePage> {
   }
 
   /// 构建SVG或默认头像
+  /// 注意：_avatarSvg 可能存储的是 URL（用户上传的图片）或 SVG 字符串（随机生成的头像）
   Widget _buildSvgOrDefaultAvatar() {
-    if (_avatarSvg != null) {
-      debugPrint('[ProfilePage] _buildSvgOrDefaultAvatar() - 使用SVG头像，长度=${_avatarSvg!.length}');
-      debugPrint('[ProfilePage]   SVG前50字符: ${_avatarSvg!.substring(0, _avatarSvg!.length > 50 ? 50 : _avatarSvg!.length)}');
-      return SvgPicture.string(
-        _avatarSvg!,
-        width: 80,
-        height: 80,
-        fit: BoxFit.cover,
-      );
+    if (_avatarSvg != null && _avatarSvg!.isNotEmpty) {
+      debugPrint('[ProfilePage] _buildSvgOrDefaultAvatar() - 检查头像内容，长度=${_avatarSvg!.length}');
+      debugPrint('[ProfilePage]   内容前50字符: ${_avatarSvg!.substring(0, _avatarSvg!.length > 50 ? 50 : _avatarSvg!.length)}');
+
+      // 检测是否是 URL（用户上传的头像图片）
+      if (_avatarSvg!.startsWith('http://') || _avatarSvg!.startsWith('https://')) {
+        debugPrint('[ProfilePage] _buildSvgOrDefaultAvatar() - 检测到是URL，使用网络图片');
+        return Image.network(
+          _avatarSvg!,
+          width: 80,
+          height: 80,
+          fit: BoxFit.cover,
+          loadingBuilder: (context, child, loadingProgress) {
+            if (loadingProgress == null) return child;
+            return const Center(
+              child: SizedBox(
+                width: 24,
+                height: 24,
+                child: CircularProgressIndicator(
+                  strokeWidth: 2,
+                  valueColor: AlwaysStoppedAnimation<Color>(Color(0xFFD4AF37)),
+                ),
+              ),
+            );
+          },
+          errorBuilder: (context, error, stackTrace) {
+            debugPrint('[ProfilePage] _buildSvgOrDefaultAvatar() - 网络图片加载失败: $error');
+            return const Icon(
+              Icons.person,
+              size: 40,
+              color: Color(0xFF8B5A2B),
+            );
+          },
+        );
+      }
+
+      // 检测是否是 SVG 字符串（随机生成的 SVG 头像）
+      if (_avatarSvg!.contains('<svg') || _avatarSvg!.startsWith('<?xml')) {
+        debugPrint('[ProfilePage] _buildSvgOrDefaultAvatar() - 检测到是SVG字符串，使用SvgPicture');
+        return SvgPicture.string(
+          _avatarSvg!,
+          width: 80,
+          height: 80,
+          fit: BoxFit.cover,
+        );
+      }
+
+      debugPrint('[ProfilePage] _buildSvgOrDefaultAvatar() - 未知格式，使用默认图标');
     }
-    debugPrint('[ProfilePage] _buildSvgOrDefaultAvatar() - 无SVG，使用默认图标');
+    debugPrint('[ProfilePage] _buildSvgOrDefaultAvatar() - 无头像数据，使用默认图标');
     return const Icon(
       Icons.person,
       size: 40,