diff --git a/addons/game_designer/designer_ui.gd b/addons/game_designer/designer_ui.gd
index c2be71f..f4d1998 100644
--- a/addons/game_designer/designer_ui.gd
+++ b/addons/game_designer/designer_ui.gd
@@ -1,12 +1,17 @@
-## 游戏设计器通用 UI 辅助（静态方法，各标签页复用）
+## 游戏设计器通用 UI 辅助（静态方法 + 共享常量，各标签页复用）
 @tool
 extends RefCounted
 
+## 元素词表（spell_tab 复选框 / resonance_tab 元素下拉共用）；label 双语显示，tag 存储，index 对齐
+const ELEM_LABELS := ["火 Fire", "冰 Ice", "雷 Lightning", "水 Water", "毒 Poison"]
+const ELEM_TAGS   := ["tag:fire", "tag:ice", "tag:lightning", "tag:water", "tag:poison"]
+
 static func spin(min_v: float, max_v: float, step: float, val: float) -> SpinBox:
 	var s := SpinBox.new()
 	s.min_value = min_v; s.max_value = max_v; s.step = step
 	s.value = val
 	s.custom_minimum_size = Vector2(80, 0)
+	s.size_flags_horizontal = Control.SIZE_EXPAND_FILL
 	return s
 
 static func line(text: String, placeholder: String = "") -> LineEdit:
@@ -14,6 +19,7 @@ static func line(text: String, placeholder: String = "") -> LineEdit:
 	le.text = text
 	le.placeholder_text = placeholder
 	le.custom_minimum_size = Vector2(120, 0)
+	le.size_flags_horizontal = Control.SIZE_EXPAND_FILL
 	return le
 
 static func opt(items: Array, selected: int) -> OptionButton:
@@ -21,6 +27,7 @@ static func opt(items: Array, selected: int) -> OptionButton:
 	for it in items:
 		o.add_item(str(it))
 	o.selected = clampi(selected, 0, items.size() - 1)
+	o.size_flags_horizontal = Control.SIZE_EXPAND_FILL
 	return o
 
 static func header(text: String) -> Label: