diff --git a/crates/app-iced/src/components/selection/checkbox.rs b/crates/app-iced/src/components/selection/checkbox.rs
index b20c20c..41a7d69 100644
--- a/crates/app-iced/src/components/selection/checkbox.rs
+++ b/crates/app-iced/src/components/selection/checkbox.rs
@@ -11,7 +11,7 @@
 //!    里面套一个 40 的圆容器，再套 20 的方框（见 `shell` 的模块文档）。
 
 use iced::widget::{container, row, text};
-use iced::{Alignment, Element, Length};
+use iced::{Alignment, Element, Length, Padding};
 
 use unlucky_design::typography::TypeRole;
 
@@ -164,10 +164,17 @@ pub fn checkbox<'a, M: Clone + 'a>(ui: &'a Ui, spec: Checkbox<'a, M>) -> Element
         );
     }
 
-    // 命中区 48：方框 20 + 状态层 40 都在里面垂直居中
+    // 命中区 48：方框 20 + 状态层 40 都在里面垂直居中；
+    // 左右各留 `hit_padding` 透明内边距，无标签时命中区也是 48×48（复审 P2-2）
+    let pad = geometry.hit_padding();
     let body = container(content)
         .height(Length::Fill)
-        .align_y(Alignment::Center);
+        .align_y(Alignment::Center)
+        .padding(Padding {
+            left: pad,
+            right: pad,
+            ..Padding::default()
+        });
 
     shell::shell(
         &source,
diff --git a/crates/app-iced/src/components/selection/geometry.rs b/crates/app-iced/src/components/selection/geometry.rs
index 4914a0d..d0a081b 100644
--- a/crates/app-iced/src/components/selection/geometry.rs
+++ b/crates/app-iced/src/components/selection/geometry.rs
@@ -96,6 +96,15 @@ impl ControlGeometry {
         }
     }
 
+    /// 命中区比可见状态层宽出来的部分（左右**各一份**）：`(48 − 40) / 2 = 4`。
+    ///
+    /// 无标签时行宽只有状态层的 40dp，命中区就少 8dp；A1 的
+    /// `minimumInteractiveComponentSize` 是 **48**，所以 view 侧左右各留这段透明内边距
+    /// （复审 P2-2）。有标签时行宽本来 ≥48，这段内边距不改变结论，只是保持两处口径一致。
+    pub fn hit_padding(&self) -> f32 {
+        (self.hit - self.state_layer) / 2.0
+    }
+
     /// 勾形横向端点跨度（20 画布内 0.2→0.8）：`[源]` `Checkbox.kt:496-514` 的路径比例。
     ///
     /// 这是 research/15 §25 明确允许的「组件级常量」（路径比例 0.2/0.4/0.5/0.7/0.8 不进令牌层）。
diff --git a/crates/app-iced/src/components/selection/radio.rs b/crates/app-iced/src/components/selection/radio.rs
index f0fb6e0..64680cd 100644
--- a/crates/app-iced/src/components/selection/radio.rs
+++ b/crates/app-iced/src/components/selection/radio.rs
@@ -15,7 +15,7 @@
 //! 内点：独立 10×10 圆容器居中在环里（绘制半径 12/2 − 2/2 = 5，即**直径 10**，§19.2）。
 
 use iced::widget::{container, row, text};
-use iced::{Alignment, Element, Length};
+use iced::{Alignment, Element, Length, Padding};
 
 use unlucky_design::typography::TypeRole;
 
@@ -134,9 +134,16 @@ pub fn radio<'a, M: Clone + 'a>(ui: &'a Ui, spec: Radio<'a, M>) -> Element<'a, M
         );
     }
 
+    // 命中区 48×48：左右各留 `hit_padding` 透明内边距（无标签时行宽才不是 40；复审 P2-2）
+    let pad = geometry.hit_padding();
     let body = container(content)
         .height(Length::Fill)
-        .align_y(Alignment::Center);
+        .align_y(Alignment::Center)
+        .padding(Padding {
+            left: pad,
+            right: pad,
+            ..Padding::default()
+        });
 
     shell::shell(
         &source,