diff --git a/frontend/app.html b/frontend/app.html
index 8b63a1c..63e2afb 100644
--- a/frontend/app.html
+++ b/frontend/app.html
@@ -211,6 +211,26 @@
       border-color: var(--accent-1);
     }
 
+    /* 亮色主题按钮 */
+    body.light-theme .btn-secondary {
+      background: rgba(102, 126, 234, 0.1);
+      border-color: rgba(102, 126, 234, 0.3);
+      color: #1a1a2e;
+    }
+
+    body.light-theme .btn-secondary:hover {
+      background: rgba(102, 126, 234, 0.2);
+      border-color: rgba(102, 126, 234, 0.5);
+    }
+
+    body.light-theme .btn-icon {
+      color: #1a1a2e;
+    }
+
+    body.light-theme .btn-icon:hover {
+      background: rgba(102, 126, 234, 0.1);
+    }
+
     /* 防止 Vue 初始化前显示原始模板 */
     [v-cloak] { display: none !important; }