diff --git a/sidepanel/sidepanel.css b/sidepanel/sidepanel.css
index c96c47d..923983c 100644
--- a/sidepanel/sidepanel.css
+++ b/sidepanel/sidepanel.css
@@ -523,6 +523,18 @@ header {
   line-height: 1.6;
 }
 
+.update-card-reminder {
+  margin: 0;
+  padding: 8px 10px;
+  border: 1px solid color-mix(in srgb, var(--orange) 28%, var(--border));
+  border-radius: var(--radius-sm);
+  background: color-mix(in srgb, var(--orange-soft) 70%, var(--bg-base));
+  color: var(--orange);
+  font-size: 12px;
+  font-weight: 700;
+  line-height: 1.5;
+}
+
 .update-release-list {
   display: flex;
   flex-direction: column;
diff --git a/sidepanel/sidepanel.html b/sidepanel/sidepanel.html
index 8436557..ae04807 100644
--- a/sidepanel/sidepanel.html
+++ b/sidepanel/sidepanel.html
@@ -100,6 +100,7 @@
         </div>
         <button id="btn-open-release" class="btn btn-primary btn-sm" type="button">前往更新</button>
       </div>
+      <p class="update-card-reminder">请更新前导出配置</p>
       <div id="update-release-list" class="update-release-list"></div>
     </div>
   </section>
@@ -816,4 +817,4 @@
   <script src="sidepanel.js"></script>
 </body>
 
-</html>
\ No newline at end of file
+</html>
diff --git a/tests/sidepanel-icloud-manager.test.js b/tests/sidepanel-icloud-manager.test.js
index d663837..2456f65 100644
--- a/tests/sidepanel-icloud-manager.test.js
+++ b/tests/sidepanel-icloud-manager.test.js
@@ -19,6 +19,16 @@ test('sidepanel source binds the icloud fetch mode control before using it', ()
   assert.match(source, /selectIcloudFetchMode\?\.addEventListener\('change'/);
 });
 
+test('update card highlights exporting config before upgrade', () => {
+  const html = fs.readFileSync('sidepanel/sidepanel.html', 'utf8');
+  const css = fs.readFileSync('sidepanel/sidepanel.css', 'utf8');
+
+  assert.match(html, /<p class="update-card-reminder">请更新前导出配置<\/p>/);
+  assert.match(css, /\.update-card-reminder\s*\{/);
+  assert.match(css, /font-weight:\s*700;/);
+  assert.match(css, /color:\s*var\(--orange\);/);
+});
+
 test('icloud manager exposes a factory and renders empty state', () => {
   const source = fs.readFileSync('sidepanel/icloud-manager.js', 'utf8');
   const windowObject = {};