diff --git a/app/src/main/java/com/example/login_v3/MainActivity.kt b/app/src/main/java/com/example/login_v3/MainActivity.kt
index 734c7f2..3a7a9bd 100644
--- a/app/src/main/java/com/example/login_v3/MainActivity.kt
+++ b/app/src/main/java/com/example/login_v3/MainActivity.kt
@@ -16,7 +16,7 @@ class MainActivity : ComponentActivity() {
 
         installSplashScreen()
         setContent {
-            Technologia()
+            HealthCheckScreen()
         }
     }
 }
diff --git a/app/src/main/java/com/example/login_v3/data/di/NetworkModule.kt b/app/src/main/java/com/example/login_v3/data/di/NetworkModule.kt
index a6764bd..ccb8fa2 100644
--- a/app/src/main/java/com/example/login_v3/data/di/NetworkModule.kt
+++ b/app/src/main/java/com/example/login_v3/data/di/NetworkModule.kt
@@ -18,11 +18,18 @@ object NetworkModule {
 
     @Provides
     @Singleton
-    fun provideTecnologiaApi(): TecnologiaApi { // 補上函數宣告
+    fun provideRetrofit(): Retrofit {
         return Retrofit.Builder()
-            .baseUrl("https://192.168.0.217:8443") // 記得最後面通常要有斜槓 /
+            // 關鍵：一定要以 / 結尾
+            .baseUrl("http://192.168.0.217/")
             .addConverterFactory(MoshiConverterFactory.create())
             .build()
-            .create(TecnologiaApi::class.java) // 這裡要對應你的 Api 介面類別
+    }
+
+    @Provides
+    @Singleton
+    fun provideTecnologiaApi(retrofit: Retrofit): TecnologiaApi {
+        // 直接使用上面提供的 retrofit 實體
+        return retrofit.create(TecnologiaApi::class.java)
     }
 }
\ No newline at end of file
diff --git a/app/src/main/res/xml/network_security_config.xml b/app/src/main/res/xml/network_security_config.xml
index 67b2e8d..a8f01d8 100644
--- a/app/src/main/res/xml/network_security_config.xml
+++ b/app/src/main/res/xml/network_security_config.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <network-security-config>
     <domain-config cleartextTrafficPermitted="true">
-        <domain includeSubdomains="true">http://192.168.0.217:3000/</domain>
+        <domain includeSubdomains="true">192.168.0.217</domain>
     </domain-config>
 </network-security-config>
\ No newline at end of file