diff --git a/ui-design/designs/error-pages.drawio b/ui-design/designs/error-pages.drawio
new file mode 100644
index 0000000..a27f71c
--- /dev/null
+++ b/ui-design/designs/error-pages.drawio
@@ -0,0 +1,27 @@
+<mxfile host="app.diagrams.net" modified="2026-03-10T09:08:00Z" agent="OpenClaw">
+  <diagram name="错误页面">
+    <mxGraphModel dx="600" dy="400" grid="1" gridSize="10" guides="1" tooltips="1" connect="1" arrows="1" fold="1" page="1" pageScale="1" pageWidth="600" pageHeight="400">
+      <root>
+        <mxCell id="0"/>
+        <mxCell id="1" parent="0"/>
+        
+        <!-- 404 错误 -->
+        <mxCell id="error" value="404" style="text;html=1;strokeColor=none;fillColor=none;align=center;fontSize=80;fontStyle=1;fontColor=#ff4d4f" vertex="1" parent="1">
+          <mxGeometry x="200" y="50" width="200" height="100" as="geometry"/>
+        </mxCell>
+        
+        <mxCell id="msg" value="页面不存在" style="text;html=1;strokeColor=none;fillColor=none;align=center;fontSize=20;fontColor=#595959" vertex="1" parent="1">
+          <mxGeometry x="150" y="150" width="300" height="40" as="geometry"/>
+        </mxCell>
+        
+        <mxCell id="desc" value="抱歉，您访问的页面不存在或已被删除" style="text;html=1;strokeColor=none;fillColor=none;align=center;fontSize=14;fontColor=#8c8c8c" vertex="1" parent="1">
+          <mxGeometry x="100" y="200" width="400" height="20" as="geometry"/>
+        </mxCell>
+        
+        <mxCell id="btn" value="[返回首页]" style="rounded=1;whiteSpace=wrap;html=1;fillColor=#1890ff;fontColor=#fff" vertex="1" parent="1">
+          <mxGeometry x="225" y="260" width="150" height="40" as="geometry"/>
+        </mxCell>
+      </root>
+    </mxGraphModel>
+  </diagram>
+</mxfile>