diff --git a/crm-auth/src/main/java/com/crm/auth/domain/dto/ResourceNode.java b/crm-auth/src/main/java/com/crm/auth/domain/dto/ResourceNode.java
new file mode 100644
index 0000000..d57f847
--- /dev/null
+++ b/crm-auth/src/main/java/com/crm/auth/domain/dto/ResourceNode.java
@@ -0,0 +1,79 @@
+package com.crm.auth.domain.dto;
+
+import com.crm.auth.domain.entity.SysMenu;
+import com.crm.auth.domain.enums.MenuType;
+import com.crm.base.utils.BeanCopyUtils;
+import io.swagger.v3.oas.annotations.media.Schema;
+import lombok.Data;
+
+import java.io.Serial;
+import java.io.Serializable;
+
+/**
+ * 权限资源树节点 DTO（ADR-0011）
+ * <p>管理端资源树的输入输出载体；与 SysMenu 通过 BeanCopyUtils 互转</p>
+ */
+@Data
+public class ResourceNode implements Serializable {
+
+    @Serial
+    private static final long serialVersionUID = 1L;
+
+    @Schema(description = "节点 ID，新增时不传、编辑时必传")
+    private Long id;
+
+    @Schema(description = "父节点 ID，根节点传 null/0")
+    private Long parentId;
+
+    @Schema(description = "节点名称")
+    private String name;
+
+    @Schema(description = "节点类型", example = "CATALOG")
+    private MenuType type;
+
+    @Schema(description = "排序", example = "1")
+    private Integer sort;
+
+    @Schema(description = "描述/备注")
+    private String description;
+
+    @Schema(description = "前端路由路径，menu 必填")
+    private String route;
+
+    @Schema(description = "权限码（如 crm:user:list），button 必填")
+    private String perms;
+
+    @Schema(description = "无权限时的前端行为：hide / disable，button 必填")
+    private String denyBehavior;
+
+    @Schema(description = "接口 URL，button 必填")
+    private String apiUrl;
+
+    @Schema(description = "权限点状态：enabled 启用 / disabled 停用")
+    private String status;
+
+    @Schema(description = "图标 URL，catalog/menu 可选")
+    private String icon;
+
+    /** SysMenu → ResourceNode（id 映射 + menuName→name + path→route） */
+    public static ResourceNode fromEntity(SysMenu entity) {
+        ResourceNode dto = BeanCopyUtils.copy(entity, ResourceNode::new);
+        if (entity != null) {
+            dto.setName(entity.getMenuName());
+            dto.setType(MenuType.fromCode(entity.getMenuType()));
+            dto.setRoute(entity.getPath());
+        }
+        return dto;
+    }
+
+    /** ResourceNode → SysMenu（反向映射 name→menuName + route→path） */
+    public SysMenu toEntity() {
+        SysMenu entity = BeanCopyUtils.copy(this, SysMenu::new);
+        entity.setMenuName(this.name);
+        if (this.type != null) {
+            entity.setMenuType(this.type.getCode());
+        }
+        entity.setPath(this.route);
+        return entity;
+    }
+}
diff --git a/crm-auth/src/main/java/com/crm/auth/domain/entity/SysMenu.java b/crm-auth/src/main/java/com/crm/auth/domain/entity/SysMenu.java
index f0eaad6..3d89262 100644
--- a/crm-auth/src/main/java/com/crm/auth/domain/entity/SysMenu.java
+++ b/crm-auth/src/main/java/com/crm/auth/domain/entity/SysMenu.java
@@ -48,6 +48,28 @@ public class SysMenu extends BaseEntity {
     @Column(columnDefinition = "tinyint default 1")
     private Boolean visible;
 
+    // ────────────── ADR-0011 按钮/权限点扩展字段 ──────────────
+
+    @Comment("描述/备注，仅 button 类型使用")
+    @Column(columnDefinition = "varchar(100)")
+    private String description;
+
+    @Comment("权限码（按钮级权限标识，如 crm:user:list），仅 button 类型使用")
+    @Column(columnDefinition = "varchar(100)")
+    private String perms;
+
+    @Comment("无权限时的前端行为：hide 隐藏，disable 禁用")
+    @Column(columnDefinition = "varchar(16)")
+    private String denyBehavior;
+
+    @Comment("权限点状态：enabled 启用，disabled 停用（全局断路）")
+    @Column(columnDefinition = "varchar(16) default 'enabled'")
+    private String status;
+
+    @Comment("接口 URL（按钮对应的后端 API 路径），仅 button 类型使用")
+    @Column(columnDefinition = "varchar(200)")
+    private String apiUrl;
+
     /** 子菜单列表（非数据库字段，仅供 TreeUtils 构建树时填充） */
     @TableField(exist = false)
     private List<SysMenu> children;
diff --git a/crm-auth/src/main/java/com/crm/auth/domain/enums/MenuType.java b/crm-auth/src/main/java/com/crm/auth/domain/enums/MenuType.java
new file mode 100644
index 0000000..7e40a82
--- /dev/null
+++ b/crm-auth/src/main/java/com/crm/auth/domain/enums/MenuType.java
@@ -0,0 +1,51 @@
+package com.crm.auth.domain.enums;
+
+import lombok.Getter;
+import lombok.RequiredArgsConstructor;
+
+import java.util.Arrays;
+
+/**
+ * 权限资源树节点类型枚举（ADR-0011）
+ * <p>DB 存储 tinyint（1/2/3），代码层用枚举；提供 fromCode 工厂方法和 toCode 映射</p>
+ */
+@Getter
+@RequiredArgsConstructor
+public enum MenuType {
+
+    /** 菜单分组：收纳容器，不承载页面，只能挂 menu 子节点 */
+    CATALOG(1, "catalog"),
+
+    /** 菜单页面：可导航的页面，只能挂 button 子节点 */
+    MENU(2, "menu"),
+
+    /** 按钮/权限点：叶子节点，不可再挂子节点，承载权限码和接口映射 */
+    BUTTON(3, "button");
+
+    private final int code;
+    private final String value;
+
+    /** 从 DB tinyint 值反查枚举，找不到返回 null */
+    public static MenuType fromCode(Integer code) {
+        if (code == null) return null;
+        return Arrays.stream(values())
+                .filter(t -> t.code == code)
+                .findFirst()
+                .orElse(null);
+    }
+
+    /** 是否允许作为某父类型的子节点 */
+    public static boolean isLegalChild(MenuType parentType, MenuType childType) {
+        if (childType == null) return false;
+        switch (parentType) {
+            case CATALOG:
+                return childType == MENU;
+            case MENU:
+                return childType == BUTTON;
+            case BUTTON:
+                return false; // 叶子节点
+            default:
+                return false;
+        }
+    }
+}