iter16ui T8：P8甲卡顶类型色带Bayer有序抖动试点（bcard band平涂ColorRect退役→DitherBand 4×4 Bayer 2px元胞α深至零静态绘制；随TG_*逐卡着色；全站/B区范围留后批=任务书P8甲原文；轻闸冒烟782/0+三探针绿）

game/presentation/views/ui_kit.gd

@@ -443,8 +443,31 @@ static func danger_button(text: String, tip := "") -> Button:
 	return b
 
 
+# 卡顶类型色带·Bayer 有序抖动（UI 设计对齐批 P8 甲 2026-10-06——bcard band 平涂 ColorRect 退役；
+# demo CSS 平滑渐变/blur 违反像素纪律，改 4×4 Bayer 有序抖动台阶：α 由深至 0，2px 元胞逐行降覆盖；
+# 纯静态绘制零动效（减动效无涉）；Bayer 阶数=实现细节白名单项，取 4×4）
+class DitherBand:
+	extends Control
+	var band: Color
+
+	func _init(c: Color) -> void:
+		band = c
+		custom_minimum_size = Vector2(0, 8)   # 8px = 4×4 Bayer 全周期（原平涂条 6px）
+
+	func _draw() -> void:
+		var bayer := [[0, 8, 2, 10], [12, 4, 14, 6], [3, 11, 1, 9], [15, 7, 13, 5]]
+		var cell := 2.0
+		var rows := int(ceil(custom_minimum_size.y / cell))
+		var cols := int(ceil(size.x / cell))
+		for ry in rows:
+			var cover := 1.0 - float(ry) / float(rows)   # 顶行全覆盖 → 底行趋零
+			for rx in cols:
+				if float(bayer[ry % 4][rx % 4]) / 16.0 < cover:
+					draw_rect(Rect2(float(rx) * cell, float(ry) * cell, cell, cell), band, true)
+
+
 # bcard 竖卡工厂（商店/三选一同构卡——M6/M7 共用；M7.1 差异仅=价签 vs ✓选择章）
-# 返回 {panel, mark, band, icon, name_l, desc_l, price_l, foot_l}；set_selected 经 mark/样式换装
+# set_selected 经 mark/样式换装
 class BCard:
 	extends PanelContainer
 	var mark: Label
@@ -467,9 +490,7 @@ class BCard:
 		box.add_theme_constant_override("separation", 8)
 		add_child(box)
 		body = box
-		var band_r := ColorRect.new()
-		band_r.color = band
-		band_r.custom_minimum_size = Vector2(0, 6)
+		var band_r := DitherBand.new(band)   # P8 甲：卡顶类型色带=Bayer 有序抖动带（随各 TG_* 逐卡着色）
 		box.add_child(band_r)
 		mark = UiKit.label("✓",FS_BODY, true, Color8(58, 42, 8))
 		mark.horizontal_alignment = HORIZONTAL_ALIGNMENT_RIGHT