diff --git a/app/lib/features/auth/views/login_page.dart b/app/lib/features/auth/views/login_page.dart
index 7152602..7b64f5b 100644
--- a/app/lib/features/auth/views/login_page.dart
+++ b/app/lib/features/auth/views/login_page.dart
@@ -171,6 +171,7 @@ class _LoginPageState extends State<LoginPage> with SingleTickerProviderStateMix
       ),
       child: Stack(
         clipBehavior: Clip.none,
+        alignment: Alignment.center,
         children: [
           // 装饰圆圈
           Positioned(left: 20, top: -10, child: _decorCircle(60, AppColors.accent, 0.15)),
@@ -180,6 +181,7 @@ class _LoginPageState extends State<LoginPage> with SingleTickerProviderStateMix
           Positioned(left: -10, top: 50, child: _decorCircle(25, AppColors.secondary, 0.13)),
 
           Column(
+            mainAxisSize: MainAxisSize.min,
             children: [
               // Logo — 自定义笔记本图标
               Container(