diff --git a/Tiobon.Core.Api/Tiobon.Core.Model.xml b/Tiobon.Core.Api/Tiobon.Core.Model.xml
index 04ec5aef..72c74f0d 100644
--- a/Tiobon.Core.Api/Tiobon.Core.Model.xml
+++ b/Tiobon.Core.Api/Tiobon.Core.Model.xml
@@ -635,6 +635,11 @@
             封面图片URL
             </summary>
         </member>
+        <member name="P:Tiobon.Core.Model.Models.Ghre_ExamPaperBase.CoverBackGround">
+            <summary>
+            封面图片背景
+            </summary>
+        </member>
         <member name="P:Tiobon.Core.Model.Models.Ghre_ExamPaperBase.Style">
             <summary>
             试卷风格
@@ -2373,6 +2378,11 @@
             封面图片URL
             </summary>
         </member>
+        <member name="P:Tiobon.Core.Model.Models.Ghre_ExamPaper.CoverBackGround">
+            <summary>
+            封面图片背景
+            </summary>
+        </member>
         <member name="P:Tiobon.Core.Model.Models.Ghre_ExamPaper.Style">
             <summary>
             试卷风格
diff --git a/Tiobon.Core.Api/Tiobon.Core.xml b/Tiobon.Core.Api/Tiobon.Core.xml
index 65010133..76d9be3c 100644
--- a/Tiobon.Core.Api/Tiobon.Core.xml
+++ b/Tiobon.Core.Api/Tiobon.Core.xml
@@ -265,6 +265,13 @@
             <param name="param"></param>
             <returns></returns>
         </member>
+        <member name="M:Tiobon.Core.Controllers.CommonController.DownImportTemplateAsync(Tiobon.Core.Common.QueryExport)">
+            <summary>
+            下载导入模板Excel
+            </summary>
+            <param name="param"></param>
+            <returns></returns>
+        </member>
         <member name="M:Tiobon.Core.Controllers.DbFirstController.#ctor(SqlSugar.ISqlSugarClient,Microsoft.AspNetCore.Hosting.IWebHostEnvironment)">
             <summary>
             构造函数
@@ -539,107 +546,7 @@
         </member>
         <member name="T:Tiobon.Core.Api.Controllers.Ghre_CourseClassController">
             <summary>
-            课程分类(Controller)
-            </summary>
-        </member>
-        <member name="M:Tiobon.Core.Api.Controllers.Ghre_CourseClassController.QueryByFilter(Tiobon.Core.Common.QueryFilter)">
-            <summary>
-            根据条件查询数据
-            </summary>
-            <param name="filter">条件</param>
-            <returns></returns>
-        </member>
-        <member name="M:Tiobon.Core.Api.Controllers.Ghre_CourseClassController.QueryById(System.Int64)">
-            <summary>
-             根据Id查询数据
-            </summary>
-            <param name="Id">主键ID</param>
-            <returns></returns>
-        </member>
-        <member name="M:Tiobon.Core.Api.Controllers.Ghre_CourseClassController.Insert(Tiobon.Core.Model.Models.InsertGhre_CourseClassInput)">
-            <summary>
-            新增数据
-            </summary>
-            <param name="insertModel"></param>
-            <returns></returns>
-        </member>
-        <member name="M:Tiobon.Core.Api.Controllers.Ghre_CourseClassController.BulkInsert(System.Collections.Generic.List{Tiobon.Core.Model.Models.InsertGhre_CourseClassInput})">
-            <summary>
-            批量新增数据
-            </summary>
-            <param name="insertModels"></param>
-        </member>
-        <member name="M:Tiobon.Core.Api.Controllers.Ghre_CourseClassController.Put(System.Int64,Tiobon.Core.Model.Models.EditGhre_CourseClassInput)">
-            <summary>
-            更新数据
-            </summary>
-            <param name="Id">主键ID</param>
-            <param name="editModel"></param>
-            <returns></returns>
-        </member>
-        <member name="M:Tiobon.Core.Api.Controllers.Ghre_CourseClassController.BulkUpdate(System.Collections.Generic.Dictionary{System.Int64,Tiobon.Core.Model.Models.EditGhre_CourseClassInput})">
-            <summary>
-             批量更新数据
-            </summary>
-            <param name="editModels"></param>
-        </member>
-        <member name="M:Tiobon.Core.Api.Controllers.Ghre_CourseClassController.Delete(System.Int64)">
-            <summary>
-            删除数据
-            </summary>
-            <param name="Id">主键ID</param>
-            <returns></returns>
-        </member>
-        <member name="M:Tiobon.Core.Api.Controllers.Ghre_CourseClassController.BulkDelete(System.Int64[])">
-            <summary>
-            批量删除数据
-            </summary>
-            <param name="Ids">主键IDs</param>
-            <returns></returns>
-        </member>
-        <member name="T:Tiobon.Core.Api.Controllers.ServicePageResult1`1">
-            <summary>
-            服务层分页响应实体(泛型)
-            </summary>
-        </member>
-        <member name="P:Tiobon.Core.Api.Controllers.ServicePageResult1`1.Status">
-            <summary>
-            状态码
-            </summary>
-        </member>
-        <member name="P:Tiobon.Core.Api.Controllers.ServicePageResult1`1.Success">
-            <summary>
-            操作是否成功
-            </summary>
-        </member>
-        <member name="P:Tiobon.Core.Api.Controllers.ServicePageResult1`1.Message">
-            <summary>
-            返回信息
-            </summary>
-        </member>
-        <member name="P:Tiobon.Core.Api.Controllers.ServicePageResult1`1.Page">
-            <summary>
-            当前页标
-            </summary>
-        </member>
-        <member name="P:Tiobon.Core.Api.Controllers.ServicePageResult1`1.PageCount">
-            <summary>
-            总页数
-            </summary>
-        </member>
-        <member name="P:Tiobon.Core.Api.Controllers.ServicePageResult1`1.TotalCount">
-            <summary>
-            数据总数
-            </summary>
-        </member>
-        <member name="P:Tiobon.Core.Api.Controllers.ServicePageResult1`1.PageSize">
-            <summary>
-            每页大小
-            </summary>
-        </member>
-        <member name="P:Tiobon.Core.Api.Controllers.ServicePageResult1`1.Data">
-            <summary>
-            返回数据
+            Ghre_CourseClass(Controller)
             </summary>
         </member>
         <member name="T:Tiobon.Core.Api.Controllers.Ghre_CourseController">
diff --git a/Tiobon.Core.Model/Base/Ghre/Ghre_ExamPaper.Dto.Base.cs b/Tiobon.Core.Model/Base/Ghre/Ghre_ExamPaper.Dto.Base.cs
index 4e02dbbb..f52e67e6 100644
--- a/Tiobon.Core.Model/Base/Ghre/Ghre_ExamPaper.Dto.Base.cs
+++ b/Tiobon.Core.Model/Base/Ghre/Ghre_ExamPaper.Dto.Base.cs
@@ -88,6 +88,12 @@ namespace Tiobon.Core.Model.Models
         [Display(Name = "CoverUrl"), Description("封面图片URL"), MaxLength(64, ErrorMessage = "封面图片URL 不能超过 64 个字符")]
         public string CoverUrl { get; set; }
 
+        /// <summary>
+        /// 封面图片背景
+        /// </summary>
+        [Display(Name = "CoverBackGround"), Description("封面图片背景"), MaxLength(64, ErrorMessage = "封面图片背景 不能超过 64 个字符")]
+        public string CoverBackGround { get; set; }
+
         /// <summary>
         /// 试卷风格
         /// </summary>
diff --git a/Tiobon.Core.Model/Models/Ghre/Ghre_ExamPaper.cs b/Tiobon.Core.Model/Models/Ghre/Ghre_ExamPaper.cs
index 551cb24b..cddd4abf 100644
--- a/Tiobon.Core.Model/Models/Ghre/Ghre_ExamPaper.cs
+++ b/Tiobon.Core.Model/Models/Ghre/Ghre_ExamPaper.cs
@@ -91,6 +91,12 @@ namespace Tiobon.Core.Model.Models
         [Display(Name = "CoverUrl"), Description("封面图片URL"), MaxLength(64, ErrorMessage = "封面图片URL 不能超过 64 个字符")]
         public string CoverUrl { get; set; }
 
+        /// <summary>
+        /// 封面图片背景
+        /// </summary>
+        [Display(Name = "CoverBackGround"), Description("封面图片背景"), MaxLength(64, ErrorMessage = "封面图片背景 不能超过 64 个字符")]
+        public string CoverBackGround { get; set; }
+
         /// <summary>
         /// 试卷风格
         /// </summary>
diff --git a/Tiobon.Core.Model/ViewModels/Extend/DefaultGhre_ExamPaperInput.cs b/Tiobon.Core.Model/ViewModels/Extend/DefaultGhre_ExamPaperInput.cs
index 8c738e9b..d091de02 100644
--- a/Tiobon.Core.Model/ViewModels/Extend/DefaultGhre_ExamPaperInput.cs
+++ b/Tiobon.Core.Model/ViewModels/Extend/DefaultGhre_ExamPaperInput.cs
@@ -54,6 +54,7 @@ public class DefaultGhre_ExamPaperStyleInfo
 {
     public string coverImage { get; set; }
     public string paperStyle { get; set; }
+    public string coverBackGround { get; set; } = "rgba(0, 0, 0, 0.4)";
 }
 public class DefaultGhre_ExamPaperPreview
 {
diff --git a/Tiobon.Core.Services/Ghre/Ghre_ExamPaperServices.cs b/Tiobon.Core.Services/Ghre/Ghre_ExamPaperServices.cs
index 5c3b6b2c..bad3b70c 100644
--- a/Tiobon.Core.Services/Ghre/Ghre_ExamPaperServices.cs
+++ b/Tiobon.Core.Services/Ghre/Ghre_ExamPaperServices.cs
@@ -447,6 +447,8 @@ namespace Tiobon.Core.Services
 
                 input.pageData.styleInfo.coverImage = exampaper.CoverUrl;
                 input.pageData.styleInfo.paperStyle = exampaper.Style;
+                input.pageData.styleInfo.coverBackGround = exampaper.CoverBackGround;
+                 
                 input.pageData.examPaperSetType = exampaper.SetMethod;
 
                 input.pageData.examPaperSetData = await _ghre_ExamPaperConfigServices.Query(x => x.ExamPaperId == Id, "TaxisNo ASC");
@@ -591,6 +593,7 @@ namespace Tiobon.Core.Services
                 insert.PaperNo = await GenerateContinuousSequence("Ghre_ExamPaper", "PaperNo", "P");
                 insert.LinkId = insertModel.baseData.LinkType == "CourseId" ? insertModel.baseData.CourseId : insertModel.baseData.CourseSceneId;
                 insert.CoverUrl = insertModel.styleInfo.coverImage;
+                insert.CoverBackGround = insertModel.styleInfo.coverBackGround;
                 insert.Style = insertModel.styleInfo.paperStyle;
                 insert.SetMethod = insertModel.examPaperSetType;
                 insert.Status = "Draft";
@@ -645,6 +648,7 @@ delete from Ghre_ExamPaperQuestion WHERE ExamPaperId='{id}';");
                 insert.PaperNo = await GenerateContinuousSequence("Ghre_ExamPaper", "PaperNo", "P");
                 insert.LinkId = insertModel.baseData.LinkType == "CourseId" ? insertModel.baseData.CourseId : insertModel.baseData.CourseSceneId;
                 insert.CoverUrl = insertModel.styleInfo.coverImage;
+                insert.CoverBackGround = insertModel.styleInfo.coverBackGround;
                 insert.Style = insertModel.styleInfo.paperStyle;
                 insert.SetMethod = insertModel.examPaperSetType;
                 insert.Status = "Draft";
diff --git a/Tiobon.Core/Tiobon.Core.Model.xml b/Tiobon.Core/Tiobon.Core.Model.xml
index 04ec5aef..72c74f0d 100644
--- a/Tiobon.Core/Tiobon.Core.Model.xml
+++ b/Tiobon.Core/Tiobon.Core.Model.xml
@@ -635,6 +635,11 @@
             封面图片URL
             </summary>
         </member>
+        <member name="P:Tiobon.Core.Model.Models.Ghre_ExamPaperBase.CoverBackGround">
+            <summary>
+            封面图片背景
+            </summary>
+        </member>
         <member name="P:Tiobon.Core.Model.Models.Ghre_ExamPaperBase.Style">
             <summary>
             试卷风格
@@ -2373,6 +2378,11 @@
             封面图片URL
             </summary>
         </member>
+        <member name="P:Tiobon.Core.Model.Models.Ghre_ExamPaper.CoverBackGround">
+            <summary>
+            封面图片背景
+            </summary>
+        </member>
         <member name="P:Tiobon.Core.Model.Models.Ghre_ExamPaper.Style">
             <summary>
             试卷风格