style(ui): 统一页面字号间距与状态样式

lib/core/theme/app_dimens.dart

@@ -10,6 +10,7 @@ abstract final class AppDimens {
 
   static const double pageHorizontal = 16;
   static const double cardRadius = 16;
+  static const double authCardRadius = 20;
   static const double cardPadding = 16;
   static const double innerRadius = 12;
   static const double innerPadding = 12;