diff --git a/YD_Event.Core/Domain/Certificate/CertificateModel.cs b/YD_Event.Core/Domain/Certificate/CertificateModel.cs
index f4afd73..681437e 100644
--- a/YD_Event.Core/Domain/Certificate/CertificateModel.cs
+++ b/YD_Event.Core/Domain/Certificate/CertificateModel.cs
@@ -32,34 +32,3 @@ public class CertificateModel
     /// </summary>
     public int Height { get; set; }
 }
-
-/// <summary>
-/// 证书文档
-/// </summary>
-public class CertificateDocument
-{
-    private readonly CertificateModel _model;
-    private readonly List<YD_Event.Core.Entities.CertificateElement> _elements;
-    private readonly Dictionary<string, string> _data;
-    private readonly string _qrCodeUrl;
-
-    public CertificateDocument(CertificateModel model, List<YD_Event.Core.Entities.CertificateElement> elements, 
-        Dictionary<string, string> data, string qrCodeUrl)
-    {
-        _model = model;
-        _elements = elements;
-        _data = data;
-        _qrCodeUrl = qrCodeUrl;
-    }
-
-    /// <summary>
-    /// 生成PDF
-    /// </summary>
-    /// <returns>PDF字节数组</returns>
-    public byte[] GeneratePdf()
-    {
-        // 这里应该使用QuestPDF生成PDF
-        // 暂时返回空字节数组，实际项目中需要实现
-        return new byte[0];
-    }
-}
diff --git a/YD_Event.Core/Entities/CertificateElement.cs b/YD_Event.Core/Entities/CertificateElement.cs
deleted file mode 100644
index 14f264c..0000000
--- a/YD_Event.Core/Entities/CertificateElement.cs
+++ /dev/null
@@ -1,96 +0,0 @@
-using System;
-using SqlSugar;
-
-namespace YD_Event.Core.Entities
-{
-    /// <summary>
-    /// 证书元素表 (CertificateElement)
-    /// </summary>
-    [SugarTable("CertificateElement")]
-    public class CertificateElement : Entity<long>, ISoftDelete, ISortable
-    {
-        /// <summary>
-        /// 模板ID (关联 CertificateTemplate)
-        /// </summary>
-        [SugarColumn(ColumnDescription = "模板ID", IsNullable = false)]
-        public long TemplateId { get; set; }
-
-        /// <summary>
-        /// 元素类型: Text, Image, QRCode
-        /// </summary>
-        [SugarColumn(ColumnDescription = "元素类型", IsNullable = false)]
-        public string Type { get; set; }
-
-        /// <summary>
-        /// 字段名/标签 (维护用)
-        /// </summary>
-        [SugarColumn(ColumnDescription = "字段名", IsNullable = true)]
-        public string FieldName { get; set; }
-
-        /// <summary>
-        /// 绑定键 (业务数据字段)
-        /// </summary>
-        [SugarColumn(ColumnDescription = "绑定键", IsNullable = true)]
-        public string BindingKey { get; set; }
-
-        /// <summary>
-        /// X坐标 (px)
-        /// </summary>
-        [SugarColumn(ColumnDescription = "X坐标", IsNullable = false)]
-        public float X { get; set; }
-
-        /// <summary>
-        /// Y坐标 (px)
-        /// </summary>
-        [SugarColumn(ColumnDescription = "Y坐标", IsNullable = false)]
-        public float Y { get; set; }
-
-        /// <summary>
-        /// 宽度 (px)
-        /// </summary>
-        [SugarColumn(ColumnDescription = "宽度", IsNullable = false)]
-        public float Width { get; set; }
-
-        /// <summary>
-        /// 高度 (px)
-        /// </summary>
-        [SugarColumn(ColumnDescription = "高度", IsNullable = false)]
-        public float Height { get; set; }
-
-        /// <summary>
-        /// 字体
-        /// </summary>
-        [SugarColumn(ColumnDescription = "字体", DefaultValue = "Source Han Sans CN", IsNullable = true)]
-        public string FontFamily { get; set; }
-
-        /// <summary>
-        /// 字号
-        /// </summary>
-        [SugarColumn(ColumnDescription = "字号", IsNullable = false)]
-        public float FontSize { get; set; }
-
-        /// <summary>
-        /// 颜色代码 #RRGGBB
-        /// </summary>
-        [SugarColumn(ColumnDescription = "颜色", IsNullable = true)]
-        public string Color { get; set; }
-
-        /// <summary>
-        /// 额外样式 JSON
-        /// </summary>
-        [SugarColumn(ColumnDescription = "额外样式", IsNullable = true, IsJson = true)]
-        public string StyleJson { get; set; }
-
-        /// <summary>
-        /// 排序
-        /// </summary>
-        [SugarColumn(ColumnDescription = "排序")]
-        public int Sort { get; set; }
-
-        /// <summary>
-        /// 软删除
-        /// </summary>
-        [SugarColumn(ColumnDescription = "软删除")]
-        public bool DeleteMark { get; set; }
-    }
-}