update 251028 - L02

lib/main.dart

@@ -0,0 +1,24 @@
+import 'package:flutter/material.dart';
+import 'package:lhj_flutter/pages/login.dart';
+
+void main() {
+  runApp(const MainApp());
+}
+
+class MainApp extends StatelessWidget {
+  const MainApp({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return MaterialApp(
+      title: 'Flutter Demo',
+      theme: ThemeData(
+        colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
+        useMaterial3: true,
+      ),
+      darkTheme: ThemeData.dark(useMaterial3: true),
+      themeMode: ThemeMode.system,
+      home: const LoginPage(),
+    );
+  }
+}