diff --git a/README.md b/README.md
index b4daa79..2dbacf5 100644
--- a/README.md
+++ b/README.md
@@ -18,12 +18,12 @@
 | 按键 | 作用 |
 |---|---|
 | `A` / `D` | 左右移动 |
-| `空格` | 跳跃（单段，空中不能二段跳） |
+| `空格` | （当前已停用，输入映射里的 `jump` 键位为空） |
 | `S` 按住 | 显示投掷抛物线预览 |
 | `S` 松开 | 投出钥匙 |
 | `W` | 传送到扔出去的钥匙位置，并把它捡回来 |
 | `Z` | 消耗一个回血道具：回一颗心 + 5 秒无敌盾 |
-| `F` | 切换飞行（**仅编辑器 / 调试版可用**，见下方说明） |
+| `F` | 切换飞行（**隐藏技能**，藏在右上角「房★主★有★神★器★」面板里，见下方说明） |
 | `R` / `Enter` | 死亡后重新开始 |
 
 ---
@@ -49,6 +49,9 @@
 - **重力**：`get_gravity()`，只在 `not is_on_floor()` 时累加到 `velocity.y`
 - **水平移动**：`Input.get_axis("move_left", "move_right")` 取方向，用 `move_toward()` 做加速 / 减速插值，手感比直接赋值柔和
 - **跳跃**：`Input.is_action_just_pressed("jump")` 配合 `is_on_floor()`，因此**只有踩在地面上才能起跳**，天然不会二段跳
+  - ⚠️ 目前输入映射里的 `jump` **没有绑定任何按键**（空格被空置了），所以这段代码暂时不会触发。
+    想恢复：`项目 → 项目设置 → 输入映射 → jump → 添加按键 → 空格`，或者把 `project.godot` 里
+    `jump` 的 `"events"` 改回 `[Object(InputEventKey, ... "physical_keycode":32 ...)]`。
 - **朝向**：根据 `velocity.x` 的正负翻转 `Sprite2D.flip_h`
 
 ### ② 瓦片地图
@@ -92,10 +95,12 @@
 - 按 `W`：瞬移到钥匙所在位置并收回它
 - 因为预测和实际飞行调用的是**同一个 `simulate_trajectory()` 函数**，"弧线显示能落到的地方"就等于"钥匙真正落到的地方"（实测偏差 0.000 px）
 
-**技能 B —— 飞行**（`player_controller.gd`）
+**技能 B —— 飞行（隐藏技能）**（`player_controller.gd`）
 
-- 按 `F` 切换飞行状态，`W` / `S` 控制升降，`A` / `D` 平移
-- 为了不影响正式玩法的难度平衡，**只在编辑器 / 调试版生效**（`OS.is_debug_build()`），导出正式版按键无效
+- 按 `F` 切换飞行状态，方向键 ↑ / ↓ 控制升降（`S` 也可以下降），`A` / `D` 平移
+- 屏幕上不会有任何提示，它是藏在右上角 **「房★主★有★神★器★」** 按钮里的彩蛋：
+  点开面板就能看到飞行开关和跳关按钮（键盘 `1` / `2` / `3` 跳关，`Esc` 关闭面板）
+- 这个面板由自动加载单例 `scripts/cheat_panel.gd` 提供，**三个关卡都有，正式版里也能用**
 - 如果想在导出版里也开放，把 `fly_available()` 里的 `OS.is_debug_build()` 去掉即可：
   ```gdscript
   func fly_available() -> bool:
diff --git a/project.godot b/project.godot
index e58a9c0..fa4e08e 100644
--- a/project.godot
+++ b/project.godot
@@ -17,7 +17,7 @@ config/icon="res://icon.svg"
 
 [autoload]
 
-LevelSkip="*res://scenes/level_skip.tscn"
+CheatPanel="*res://scenes/cheat_panel.tscn"
 
 [display]
 
@@ -45,8 +45,7 @@ move_right={
 }
 jump={
 "deadzone": 0.2,
-"events": [Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":0,"physical_keycode":32,"key_label":0,"unicode":32,"location":0,"echo":false,"script":null)
-]
+"events": []
 }
 warp_to_key={
 "deadzone": 0.2,
diff --git a/scenes/cheat_panel.tscn b/scenes/cheat_panel.tscn
new file mode 100644
index 0000000..7fd92b3
--- /dev/null
+++ b/scenes/cheat_panel.tscn
@@ -0,0 +1,77 @@
+[gd_scene load_steps=4 format=3]
+
+[ext_resource type="Script" path="res://scripts/cheat_panel.gd" id="1_cheat"]
+
+[sub_resource type="SystemFont" id="SystemFont_cjk"]
+font_names = PackedStringArray("Microsoft YaHei UI", "Microsoft YaHei", "SimHei", "Noto Sans CJK SC", "sans-serif")
+
+[sub_resource type="StyleBoxFlat" id="StyleBoxFlat_panel"]
+content_margin_left = 10.0
+content_margin_top = 10.0
+content_margin_right = 10.0
+content_margin_bottom = 10.0
+bg_color = Color(0.07, 0.08, 0.13, 0.92)
+border_width_left = 2
+border_width_top = 2
+border_width_right = 2
+border_width_bottom = 2
+border_color = Color(1, 0.82, 0.35, 0.85)
+corner_radius_top_left = 5
+corner_radius_top_right = 5
+corner_radius_bottom_right = 5
+corner_radius_bottom_left = 5
+
+[node name="CheatPanel" type="CanvasLayer"]
+process_mode = 3
+layer = 40
+script = ExtResource("1_cheat")
+
+[node name="OpenButton" type="Button" parent="."]
+anchor_left = 1.0
+anchor_right = 1.0
+offset_left = -178.0
+offset_top = 6.0
+offset_right = -6.0
+offset_bottom = 28.0
+theme_override_colors/font_color = Color(1, 0.88, 0.5, 1)
+theme_override_fonts/font = SubResource("SystemFont_cjk")
+theme_override_font_sizes/font_size = 11
+text = "房★主★有★神★器★"
+
+[node name="Panel" type="PanelContainer" parent="."]
+anchor_left = 1.0
+anchor_right = 1.0
+offset_left = -178.0
+offset_top = 32.0
+offset_right = -6.0
+offset_bottom = 168.0
+theme_override_styles/panel = SubResource("StyleBoxFlat_panel")
+
+[node name="VBox" type="VBoxContainer" parent="Panel"]
+theme_override_constants/separation = 6
+
+[node name="Title" type="Label" parent="Panel/VBox"]
+theme_override_colors/font_color = Color(1, 0.85, 0.4, 1)
+theme_override_fonts/font = SubResource("SystemFont_cjk")
+theme_override_font_sizes/font_size = 12
+text = "神 器"
+horizontal_alignment = 1
+
+[node name="FlyButton" type="Button" parent="Panel/VBox"]
+theme_override_fonts/font = SubResource("SystemFont_cjk")
+theme_override_font_sizes/font_size = 11
+text = "飞行：关（F）"
+
+[node name="Row" type="HBoxContainer" parent="Panel/VBox"]
+theme_override_constants/separation = 5
+
+[node name="JumpHint" type="Label" parent="Panel/VBox/Row"]
+theme_override_fonts/font = SubResource("SystemFont_cjk")
+theme_override_font_sizes/font_size = 11
+text = "跳关"
+vertical_alignment = 1
+
+[node name="CloseButton" type="Button" parent="Panel/VBox"]
+theme_override_fonts/font = SubResource("SystemFont_cjk")
+theme_override_font_sizes/font_size = 11
+text = "关闭（Esc）"
diff --git a/scenes/level3.tscn b/scenes/level3.tscn
index 03f3abf..0d6d83a 100644
--- a/scenes/level3.tscn
+++ b/scenes/level3.tscn
@@ -226,7 +226,7 @@ position = Vector2(288, 37)
 
 [node name="CoinGoldRound_01" parent="Level/PrefabInstances/Collectibles" unique_id=926105584 instance=ExtResource("17_16ffm")]
 z_index = 5
-position = Vector2(447, 130)
+position = Vector2(432, 127)
 
 [node name="CoinGoldRound_02" parent="Level/PrefabInstances/Collectibles" unique_id=1674416025 instance=ExtResource("17_16ffm")]
 z_index = 5
diff --git a/scenes/level_skip.tscn b/scenes/level_skip.tscn
deleted file mode 100644
index 61427da..0000000
--- a/scenes/level_skip.tscn
+++ /dev/null
@@ -1,29 +0,0 @@
-[gd_scene load_steps=3 format=3]
-
-[ext_resource type="Script" path="res://scripts/level_skip.gd" id="1_skip"]
-
-[sub_resource type="SystemFont" id="SystemFont_cjk"]
-font_names = PackedStringArray("Microsoft YaHei UI", "Microsoft YaHei", "SimHei", "Noto Sans CJK SC", "sans-serif")
-
-[node name="LevelSkip" type="CanvasLayer"]
-process_mode = 3
-layer = 30
-script = ExtResource("1_skip")
-
-[node name="Buttons" type="HBoxContainer" parent="."]
-anchor_left = 1.0
-anchor_right = 1.0
-offset_left = -130.0
-offset_top = 6.0
-offset_right = -6.0
-offset_bottom = 32.0
-theme_override_constants/separation = 4
-
-[node name="Hint" type="Label" parent="Buttons"]
-theme_override_colors/font_color = Color(1, 1, 1, 0.85)
-theme_override_colors/font_outline_color = Color(0, 0, 0, 0.8)
-theme_override_constants/outline_size = 3
-theme_override_fonts/font = SubResource("SystemFont_cjk")
-theme_override_font_sizes/font_size = 11
-text = "跳关"
-vertical_alignment = 1
diff --git a/scripts/cheat_panel.gd b/scripts/cheat_panel.gd
new file mode 100644
index 0000000..79d0b8c
--- /dev/null
+++ b/scripts/cheat_panel.gd
@@ -0,0 +1,111 @@
+extends CanvasLayer
+
+## 「房★主★有★神★器★」：把两个调试功能（飞行 / 跳关）藏在一个彩蛋按钮里。
+##
+## 平时屏幕上只有右上角一个小小的「房★主★有★神★器★」按钮，
+## 点一下才弹出面板，里面是飞行开关和跳关按钮。
+## 面板打开时键盘 1/2/3 也能跳关，Esc 或再点一次按钮关闭。
+## 正式版里也能用（这是刻意留的彩蛋，不是调试残留）。
+
+@export var levels: Array[String] = [
+	"res://scenes/main.tscn",
+	"res://scenes/level2.tscn",
+	"res://scenes/level3.tscn",
+]
+## 是否显示那个彩蛋按钮（关掉的话就只能靠别的方式打开面板了）
+@export var show_button: bool = true
+
+var _panel: Control = null
+var _open_button: Button = null
+var _fly_button: Button = null
+var _player: Node = null
+var _open: bool = false
+
+
+func _ready() -> void:
+	visible = true
+	_panel = get_node_or_null("Panel")
+	_open_button = get_node_or_null("OpenButton")
+	_fly_button = get_node_or_null("Panel/VBox/FlyButton")
+
+	if _open_button != null:
+		_open_button.visible = show_button
+		_open_button.pressed.connect(toggle_panel)
+
+	var close := get_node_or_null("Panel/VBox/CloseButton")
+	if close != null:
+		close.pressed.connect(toggle_panel)
+
+	if _fly_button != null:
+		_fly_button.pressed.connect(toggle_fly)
+
+	var row := get_node_or_null("Panel/VBox/Row")
+	if row != null:
+		var index := 1
+		for path in levels:
+			var btn := Button.new()
+			btn.text = str(index)
+			btn.custom_minimum_size = Vector2(26.0, 24.0)
+			btn.focus_mode = Control.FOCUS_NONE
+			btn.add_theme_font_size_override("font_size", 12)
+			btn.pressed.connect(jump_to.bind(path))
+			row.add_child(btn)
+			index += 1
+
+	if _panel != null:
+		_panel.visible = false
+
+
+func _process(_delta: float) -> void:
+	if _fly_button == null:
+		return
+	if _player == null or not is_instance_valid(_player):
+		_player = get_tree().get_first_node_in_group("player")
+	if _player == null:
+		_fly_button.text = "飞行（F）"
+		return
+	_fly_button.text = "飞行：开（F）" if bool(_player.flying) else "飞行：关（F）"
+
+
+func _unhandled_input(event: InputEvent) -> void:
+	if not _open:
+		return
+	var key := event as InputEventKey
+	if key == null or not key.pressed or key.echo:
+		return
+	if key.physical_keycode == KEY_ESCAPE:
+		toggle_panel()
+		return
+	var n := 0
+	match key.physical_keycode:
+		KEY_1:
+			n = 1
+		KEY_2:
+			n = 2
+		KEY_3:
+			n = 3
+		KEY_4:
+			n = 4
+		KEY_5:
+			n = 5
+	if n >= 1 and n <= levels.size():
+		jump_to(levels[n - 1])
+
+
+func toggle_panel() -> void:
+	_open = not _open
+	if _panel != null:
+		_panel.visible = _open
+
+
+func toggle_fly() -> void:
+	if _player == null or not is_instance_valid(_player):
+		_player = get_tree().get_first_node_in_group("player")
+	if _player == null or not _player.has_method("set_flying"):
+		return
+	_player.set_flying(not bool(_player.flying))
+
+
+func jump_to(path: String) -> void:
+	get_tree().paused = false
+	get_tree().change_scene_to_file(path)
diff --git a/scripts/level_skip.gd b/scripts/level_skip.gd
deleted file mode 100644
index 94cecd5..0000000
--- a/scripts/level_skip.gd
+++ /dev/null
@@ -1,59 +0,0 @@
-extends CanvasLayer
-
-## 测试用跳关：右上角一排数字按钮，点一下直接跳到对应关卡；
-## 键盘上按 1 / 2 / 3 也一样。
-## 只在编辑器 / 调试版里显示，导出的正式版会自动隐藏（和飞行一个规矩）。
-
-@export var levels: Array[String] = [
-	"res://scenes/main.tscn",
-	"res://scenes/level2.tscn",
-	"res://scenes/level3.tscn",
-]
-## 强制在正式版里也显示（一般别开）
-@export var always_show: bool = false
-
-
-func _ready() -> void:
-	visible = always_show or OS.is_debug_build()
-	if not visible:
-		set_process_unhandled_input(false)
-		return
-
-	var box := get_node_or_null("Buttons")
-	if box == null:
-		return
-	var index := 1
-	for path in levels:
-		var btn := Button.new()
-		btn.text = str(index)
-		btn.custom_minimum_size = Vector2(24.0, 24.0)
-		btn.focus_mode = Control.FOCUS_NONE
-		btn.add_theme_font_size_override("font_size", 12)
-		btn.pressed.connect(jump_to.bind(path))
-		box.add_child(btn)
-		index += 1
-
-
-func _unhandled_input(event: InputEvent) -> void:
-	var key := event as InputEventKey
-	if key == null or not key.pressed or key.echo:
-		return
-	var n := 0
-	match key.physical_keycode:
-		KEY_1, KEY_KP_1:
-			n = 1
-		KEY_2, KEY_KP_2:
-			n = 2
-		KEY_3, KEY_KP_3:
-			n = 3
-		KEY_4, KEY_KP_4:
-			n = 4
-		KEY_5, KEY_KP_5:
-			n = 5
-	if n >= 1 and n <= levels.size():
-		jump_to(levels[n - 1])
-
-
-func jump_to(path: String) -> void:
-	get_tree().paused = false
-	get_tree().change_scene_to_file(path)
diff --git a/scripts/player_controller.gd b/scripts/player_controller.gd
index d9310bd..fc61e96 100644
--- a/scripts/player_controller.gd
+++ b/scripts/player_controller.gd
@@ -357,7 +357,8 @@ func _build_throw_visuals() -> void:
 # ---------------------------------------------------------------- 测试用飞行
 
 func fly_available() -> bool:
-	return debug_fly and OS.is_debug_build()
+	# 这是藏在「房★主★有★神★器★」面板里的隐藏技能，正式版里也能用
+	return debug_fly
 
 
 func set_flying(on: bool) -> void:
@@ -368,10 +369,13 @@ func set_flying(on: bool) -> void:
 
 
 func handle_fly_movement() -> void:
-	# get_axis(负方向, 正方向)，屏幕坐标里 y 向下为正，所以空格(跳跃)要放在负方向
+	# 跳跃键已经停用了，所以调试飞行改用方向键上下（S 也保留作下降）来控制升降
+	var vertical := Input.get_axis("ui_up", "ui_down")
+	if is_zero_approx(vertical) and Input.is_action_pressed("squat"):
+		vertical = 1.0
 	var direction := Vector2(
 			Input.get_axis("move_left", "move_right"),
-			Input.get_axis("jump", "squat")
+			vertical
 	)
 	if direction == Vector2.ZERO:
 		velocity = Vector2.ZERO