diff --git a/build/darwin/Info.dev.plist b/build/darwin/Info.dev.plist
index 14121ef..005c9fb 100644
--- a/build/darwin/Info.dev.plist
+++ b/build/darwin/Info.dev.plist
@@ -8,7 +8,7 @@
         <key>CFBundleExecutable</key>
         <string>{{.OutputFilename}}</string>
         <key>CFBundleIdentifier</key>
-        <string>com.wails.{{.Name}}</string>
+        <string>com.wails.{{.Name}}.dev</string>
         <key>CFBundleVersion</key>
         <string>{{.Info.ProductVersion}}</string>
         <key>CFBundleGetInfoString</key>
diff --git a/frontend/src/utils/appearance.ts b/frontend/src/utils/appearance.ts
index 96ba44a..02c739d 100644
--- a/frontend/src/utils/appearance.ts
+++ b/frontend/src/utils/appearance.ts
@@ -40,6 +40,10 @@ const getPlatformFactors = () => {
 
 export const normalizeOpacityForPlatform = (opacity: number | undefined): number => {
   const raw = clamp(opacity ?? DEFAULT_OPACITY, MIN_OPACITY, MAX_OPACITY);
+  // 用户显式拉到 100%% 时，必须保持完全不透明，不能再被平台映射压低。
+  if (raw >= MAX_OPACITY - 1e-6) {
+    return MAX_OPACITY;
+  }
   const factors = getPlatformFactors();
   if (!factors) {
     return raw;