feat: 主菜单按钮组自适应窗口缩放，增大按钮字体

src/UI/Panels/MainMenu/MainMenu.tscn

@@ -35,41 +35,41 @@ offset_bottom = 260.0
 grow_horizontal = 2
 
 [node name="ButtonGroup" type="VBoxContainer" parent="." unique_id=569064410]
-layout_mode = 0
-anchor_left = 0.5
-anchor_top = 0.5
-anchor_right = 0.5
-anchor_bottom = 0.5
-offset_left = -100.0
-offset_top = -80.0
-offset_right = 100.0
-offset_bottom = 80.0
+layout_mode = 1
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
 grow_horizontal = 2
 grow_vertical = 2
 theme_override_constants/separation = 16
+alignment = 1
 
 [node name="NewGame" type="Button" parent="ButtonGroup" unique_id=835084060]
 custom_minimum_size = Vector2(200, 48)
 layout_mode = 2
 theme_override_fonts/font = ExtResource("3_q7typ")
+theme_override_font_sizes/font_size = 32
 text = "新游戏"
 
 [node name="LoadGame" type="Button" parent="ButtonGroup" unique_id=2093610529]
 custom_minimum_size = Vector2(200, 48)
 layout_mode = 2
 theme_override_fonts/font = ExtResource("3_q7typ")
+theme_override_font_sizes/font_size = 32
 text = "读取存档"
 
 [node name="Settings" type="Button" parent="ButtonGroup" unique_id=2045302694]
 custom_minimum_size = Vector2(200, 48)
 layout_mode = 2
 theme_override_fonts/font = ExtResource("3_q7typ")
+theme_override_font_sizes/font_size = 32
 text = "设置"
 
 [node name="Quit" type="Button" parent="ButtonGroup" unique_id=818112870]
 custom_minimum_size = Vector2(200, 48)
 layout_mode = 2
 theme_override_fonts/font = ExtResource("3_q7typ")
+theme_override_font_sizes/font_size = 32
 text = "退出"
 
 [node name="SavePanel" parent="." unique_id=619488443 instance=ExtResource("3_wrf65")]