diff --git a/server/MiAssessment/src/MiAssessment.Admin.Business/Models/Common/ErrorCodes.cs b/server/MiAssessment/src/MiAssessment.Admin.Business/Models/Common/ErrorCodes.cs
index 922e075..4161451 100644
--- a/server/MiAssessment/src/MiAssessment.Admin.Business/Models/Common/ErrorCodes.cs
+++ b/server/MiAssessment/src/MiAssessment.Admin.Business/Models/Common/ErrorCodes.cs
@@ -104,6 +104,11 @@ public static class ErrorCodes
     /// </summary>
     public const int PromotionImageRequired = 3112;
 
+    /// <summary>
+    /// 首页导航不存在
+    /// </summary>
+    public const int NavigationNotFound = 3121;
+
     #endregion
 
     #region 测评模块错误 (3200-3299)
diff --git a/server/MiAssessment/src/MiAssessment.Admin.Business/Services/ContentService.cs b/server/MiAssessment/src/MiAssessment.Admin.Business/Services/ContentService.cs
index 04a5e5a..12f4e89 100644
--- a/server/MiAssessment/src/MiAssessment.Admin.Business/Services/ContentService.cs
+++ b/server/MiAssessment/src/MiAssessment.Admin.Business/Services/ContentService.cs
@@ -22,14 +22,14 @@ public class ContentService : IContentService
     /// </summary>
     private static readonly Dictionary<int, string> LinkTypeNames = new()
     {
-        { 0, "无" },
+        { 0, "�? },
         { 1, "内部页面" },
         { 2, "外部链接" },
-        { 3, "小程序" }
+        { 3, "小程�? }
     };
 
     /// <summary>
-    /// 状态名称映射
+    /// 状态名称映�?
     /// </summary>
     private static readonly Dictionary<int, string> StatusNames = new()
     {
@@ -38,19 +38,19 @@ public class ContentService : IContentService
     };
 
     /// <summary>
-    /// 宣传图位置名称映射
+    /// 宣传图位置名称映�?
     /// </summary>
     private static readonly Dictionary<int, string> PositionNames = new()
     {
         { 1, "首页底部" },
-        { 2, "团队页" }
+        { 2, "团队�? }
     };
 
     /// <summary>
-    /// 构造函数
+    /// 构造函�?
     /// </summary>
     /// <param name="dbContext">数据库上下文</param>
-    /// <param name="logger">日志记录器</param>
+    /// <param name="logger">日志记录�?/param>
     public ContentService(
         AdminBusinessDbContext dbContext,
         ILogger<ContentService> logger)
@@ -59,7 +59,7 @@ public class ContentService : IContentService
         _logger = logger;
     }
 
-    #region Banner 轮播图操作
+    #region Banner 轮播图操�?
 
     /// <inheritdoc />
     public async Task<PagedResult<BannerDto>> GetBannerListAsync(BannerQueryRequest request)
@@ -69,7 +69,7 @@ public class ContentService : IContentService
             .AsNoTracking()
             .Where(b => !b.IsDeleted);
 
-        // 状态筛选
+        // 状态筛�?
         if (request.Status.HasValue)
         {
             query = query.Where(b => b.Status == request.Status.Value);
@@ -142,7 +142,7 @@ public class ContentService : IContentService
             throw new BusinessException(ErrorCodes.BannerImageRequired, "图片URL不能为空");
         }
 
-        // 验证 LinkType 和对应字段
+        // 验证 LinkType 和对应字�?
         ValidateLinkType(request.LinkType, request.LinkUrl, request.AppId);
 
         // 创建实体
@@ -171,7 +171,7 @@ public class ContentService : IContentService
     /// <inheritdoc />
     public async Task<bool> UpdateBannerAsync(UpdateBannerRequest request)
     {
-        // 查找轮播图
+        // 查找轮播�?
         var banner = await _dbContext.Banners
             .Where(b => b.Id == request.Id && !b.IsDeleted)
             .FirstOrDefaultAsync();
@@ -187,7 +187,7 @@ public class ContentService : IContentService
             throw new BusinessException(ErrorCodes.BannerImageRequired, "图片URL不能为空");
         }
 
-        // 验证 LinkType 和对应字段
+        // 验证 LinkType 和对应字�?
         ValidateLinkType(request.LinkType, request.LinkUrl, request.AppId);
 
         // 更新字段
@@ -210,7 +210,7 @@ public class ContentService : IContentService
     /// <inheritdoc />
     public async Task<bool> DeleteBannerAsync(long id)
     {
-        // 查找轮播图
+        // 查找轮播�?
         var banner = await _dbContext.Banners
             .Where(b => b.Id == id && !b.IsDeleted)
             .FirstOrDefaultAsync();
@@ -220,7 +220,7 @@ public class ContentService : IContentService
             throw new BusinessException(ErrorCodes.BannerNotFound, "轮播图不存在");
         }
 
-        // 软删除
+        // 软删�?
         banner.IsDeleted = true;
         banner.UpdateTime = DateTime.Now;
 
@@ -234,7 +234,7 @@ public class ContentService : IContentService
     /// <inheritdoc />
     public async Task<bool> UpdateBannerStatusAsync(long id, int status)
     {
-        // 查找轮播图
+        // 查找轮播�?
         var banner = await _dbContext.Banners
             .Where(b => b.Id == id && !b.IsDeleted)
             .FirstOrDefaultAsync();
@@ -244,13 +244,13 @@ public class ContentService : IContentService
             throw new BusinessException(ErrorCodes.BannerNotFound, "轮播图不存在");
         }
 
-        // 更新状态
+        // 更新状�?
         banner.Status = status;
         banner.UpdateTime = DateTime.Now;
 
         await _dbContext.SaveChangesAsync();
 
-        _logger.LogInformation("更新轮播图状态成功，ID: {BannerId}, 状态: {Status}", id, status);
+        _logger.LogInformation("更新轮播图状态成功，ID: {BannerId}, 状�? {Status}", id, status);
 
         return true;
     }
@@ -266,7 +266,7 @@ public class ContentService : IContentService
         // 获取所有需要更新的轮播图ID
         var ids = items.Select(i => i.Id).ToList();
 
-        // 批量查询轮播图
+        // 批量查询轮播�?
         var banners = await _dbContext.Banners
             .Where(b => ids.Contains(b.Id) && !b.IsDeleted)
             .ToListAsync();
@@ -291,7 +291,7 @@ public class ContentService : IContentService
 
     #endregion
 
-    #region Promotion 宣传图操作
+    #region Promotion 宣传图操�?
 
     /// <inheritdoc />
     public async Task<PagedResult<PromotionDto>> GetPromotionListAsync(PromotionQueryRequest request)
@@ -301,13 +301,13 @@ public class ContentService : IContentService
             .AsNoTracking()
             .Where(p => !p.IsDeleted);
 
-        // 位置筛选
+        // 位置筛�?
         if (request.Position.HasValue)
         {
             query = query.Where(p => p.Position == request.Position.Value);
         }
 
-        // 状态筛选
+        // 状态筛�?
         if (request.Status.HasValue)
         {
             query = query.Where(p => p.Status == request.Status.Value);
@@ -376,7 +376,7 @@ public class ContentService : IContentService
             throw new BusinessException(ErrorCodes.PromotionImageRequired, "图片URL不能为空");
         }
 
-        // 验证 Position 值
+        // 验证 Position �?
         ValidatePosition(request.Position);
 
         // 创建实体
@@ -404,7 +404,7 @@ public class ContentService : IContentService
     /// <inheritdoc />
     public async Task<bool> UpdatePromotionAsync(UpdatePromotionRequest request)
     {
-        // 查找宣传图
+        // 查找宣传�?
         var promotion = await _dbContext.Promotions
             .Where(p => p.Id == request.Id && !p.IsDeleted)
             .FirstOrDefaultAsync();
@@ -420,7 +420,7 @@ public class ContentService : IContentService
             throw new BusinessException(ErrorCodes.PromotionImageRequired, "图片URL不能为空");
         }
 
-        // 验证 Position 值
+        // 验证 Position �?
         ValidatePosition(request.Position);
 
         // 更新字段
@@ -441,7 +441,7 @@ public class ContentService : IContentService
     /// <inheritdoc />
     public async Task<bool> DeletePromotionAsync(long id)
     {
-        // 查找宣传图
+        // 查找宣传�?
         var promotion = await _dbContext.Promotions
             .Where(p => p.Id == id && !p.IsDeleted)
             .FirstOrDefaultAsync();
@@ -451,7 +451,7 @@ public class ContentService : IContentService
             throw new BusinessException(ErrorCodes.PromotionNotFound, "宣传图不存在");
         }
 
-        // 软删除
+        // 软删�?
         promotion.IsDeleted = true;
         promotion.UpdateTime = DateTime.Now;
 
@@ -465,7 +465,7 @@ public class ContentService : IContentService
     /// <inheritdoc />
     public async Task<bool> UpdatePromotionStatusAsync(long id, int status)
     {
-        // 查找宣传图
+        // 查找宣传�?
         var promotion = await _dbContext.Promotions
             .Where(p => p.Id == id && !p.IsDeleted)
             .FirstOrDefaultAsync();
@@ -475,13 +475,13 @@ public class ContentService : IContentService
             throw new BusinessException(ErrorCodes.PromotionNotFound, "宣传图不存在");
         }
 
-        // 更新状态
+        // 更新状�?
         promotion.Status = status;
         promotion.UpdateTime = DateTime.Now;
 
         await _dbContext.SaveChangesAsync();
 
-        _logger.LogInformation("更新宣传图状态成功，ID: {PromotionId}, 状态: {Status}", id, status);
+        _logger.LogInformation("更新宣传图状态成功，ID: {PromotionId}, 状�? {Status}", id, status);
 
         return true;
     }
@@ -491,7 +491,7 @@ public class ContentService : IContentService
     #region 私有方法
 
     /// <summary>
-    /// 验证 LinkType 和对应字段
+    /// 验证 LinkType 和对应字�?
     /// </summary>
     /// <param name="linkType">跳转类型</param>
     /// <param name="linkUrl">跳转地址</param>
@@ -501,7 +501,7 @@ public class ContentService : IContentService
         switch (linkType)
         {
             case 0:
-                // 无跳转，不需要验证
+                // 无跳转，不需要验�?
                 break;
             case 1:
             case 2:
@@ -512,7 +512,7 @@ public class ContentService : IContentService
                 }
                 break;
             case 3:
-                // 小程序，LinkUrl 和 AppId 都必填
+                // 小程序，LinkUrl �?AppId 都必�?
                 if (string.IsNullOrWhiteSpace(linkUrl))
                 {
                     throw new BusinessException(ErrorCodes.BannerLinkUrlRequired, "跳转地址不能为空");
@@ -536,10 +536,10 @@ public class ContentService : IContentService
     }
 
     /// <summary>
-    /// 获取状态名称
+    /// 获取状态名�?
     /// </summary>
-    /// <param name="status">状态值</param>
-    /// <returns>状态名称</returns>
+    /// <param name="status">状态�?/param>
+    /// <returns>状态名�?/returns>
     private static string GetStatusName(int status)
     {
         return StatusNames.TryGetValue(status, out var name) ? name : "未知";
@@ -548,7 +548,7 @@ public class ContentService : IContentService
     /// <summary>
     /// 获取位置名称
     /// </summary>
-    /// <param name="position">位置值</param>
+    /// <param name="position">位置�?/param>
     /// <returns>位置名称</returns>
     private static string GetPositionName(int position)
     {
@@ -556,23 +556,23 @@ public class ContentService : IContentService
     }
 
     /// <summary>
-    /// 导航状态名称映射
+    /// 导航状态名称映�?
     /// </summary>
     private static readonly Dictionary<int, string> NavigationStatusNames = new()
     {
         { 0, "即将上线" },
-        { 1, "已上线" }
+        { 1, "已上�? }
     };
 
     /// <summary>
-    /// 验证 Position 值
+    /// 验证 Position �?
     /// </summary>
-    /// <param name="position">位置值</param>
+    /// <param name="position">位置�?/param>
     private void ValidatePosition(int position)
     {
         if (position != 1 && position != 2)
         {
-            throw new BusinessException(ErrorCodes.ParamError, "位置值必须为1（首页底部）或2（团队页）");
+            throw new BusinessException(ErrorCodes.ParamError, "位置值必须为1（首页底部）�?（团队页�?);
         }
     }
 
@@ -641,7 +641,7 @@ public class ContentService : IContentService
 
         if (nav == null)
         {
-            throw new BusinessException(ErrorCodes.ContentNotFound, "首页导航不存在");
+            throw new BusinessException(ErrorCodes.NavigationNotFound, "首页导航不存�?);
         }
 
         return nav;
@@ -683,7 +683,7 @@ public class ContentService : IContentService
 
         if (entity == null)
         {
-            throw new BusinessException(ErrorCodes.ContentNotFound, "首页导航不存在");
+            throw new BusinessException(ErrorCodes.NavigationNotFound, "首页导航不存�?);
         }
 
         if (string.IsNullOrWhiteSpace(request.Name))
@@ -727,14 +727,14 @@ public class ContentService : IContentService
 
         if (entity == null)
         {
-            throw new BusinessException(ErrorCodes.ContentNotFound, "首页导航不存在");
+            throw new BusinessException(ErrorCodes.NavigationNotFound, "首页导航不存�?);
         }
 
         entity.Status = status;
         entity.UpdateTime = DateTime.Now;
         await _dbContext.SaveChangesAsync();
 
-        _logger.LogInformation("更新首页导航状态成功，ID: {Id}, 状态: {Status}", id, status);
+        _logger.LogInformation("更新首页导航状态成功，ID: {Id}, 状�? {Status}", id, status);
         return true;
     }