diff --git a/CustomKeyboard/KeyboardAssets.xcassets/ai_key_icon.imageset/Contents.json b/CustomKeyboard/KeyboardAssets.xcassets/ai_key_icon.imageset/Contents.json
index bf66ad0..89ff223 100644
--- a/CustomKeyboard/KeyboardAssets.xcassets/ai_key_icon.imageset/Contents.json
+++ b/CustomKeyboard/KeyboardAssets.xcassets/ai_key_icon.imageset/Contents.json
@@ -5,12 +5,12 @@
       "scale" : "1x"
     },
     {
-      "filename" : "ai_key_icon@2x.png",
+      "filename" : "切图 270@2x.png",
       "idiom" : "universal",
       "scale" : "2x"
     },
     {
-      "filename" : "ai_key_icon@3x.png",
+      "filename" : "切图 270@3x.png",
       "idiom" : "universal",
       "scale" : "3x"
     }
diff --git a/CustomKeyboard/KeyboardAssets.xcassets/ai_key_icon.imageset/ai_key_icon@2x.png b/CustomKeyboard/KeyboardAssets.xcassets/ai_key_icon.imageset/ai_key_icon@2x.png
deleted file mode 100644
index 6cf190c..0000000
Binary files a/CustomKeyboard/KeyboardAssets.xcassets/ai_key_icon.imageset/ai_key_icon@2x.png and /dev/null differ
diff --git a/CustomKeyboard/KeyboardAssets.xcassets/ai_key_icon.imageset/ai_key_icon@3x.png b/CustomKeyboard/KeyboardAssets.xcassets/ai_key_icon.imageset/ai_key_icon@3x.png
deleted file mode 100644
index 7cd9601..0000000
Binary files a/CustomKeyboard/KeyboardAssets.xcassets/ai_key_icon.imageset/ai_key_icon@3x.png and /dev/null differ
diff --git a/CustomKeyboard/KeyboardAssets.xcassets/ai_key_icon.imageset/切图 270@2x.png b/CustomKeyboard/KeyboardAssets.xcassets/ai_key_icon.imageset/切图 270@2x.png
new file mode 100644
index 0000000..41a34f1
Binary files /dev/null and b/CustomKeyboard/KeyboardAssets.xcassets/ai_key_icon.imageset/切图 270@2x.png differ
diff --git a/CustomKeyboard/KeyboardAssets.xcassets/ai_key_icon.imageset/切图 270@3x.png b/CustomKeyboard/KeyboardAssets.xcassets/ai_key_icon.imageset/切图 270@3x.png
new file mode 100644
index 0000000..cc81982
Binary files /dev/null and b/CustomKeyboard/KeyboardAssets.xcassets/ai_key_icon.imageset/切图 270@3x.png differ
diff --git a/CustomKeyboard/View/KBFunctionView.m b/CustomKeyboard/View/KBFunctionView.m
index 4bee11f..70d07ca 100644
--- a/CustomKeyboard/View/KBFunctionView.m
+++ b/CustomKeyboard/View/KBFunctionView.m
@@ -162,15 +162,12 @@
     [self.rightButtonContainer addSubview:self.clearButtonInternal];
     [self.rightButtonContainer addSubview:self.sendButtonInternal];
 
-    // 竖向排布：粘贴、删除、清空为等高；发送优先更高，但允许在空间不足时压缩
+    // 竖向排布：容器内四个按钮等高分配，间距为 8px（按设计稿等比缩放）
     CGFloat smallH = KBFit(41.0f);
-    CGFloat bigH = KBFit(56.0f);
-    // 竖向/横向间距按设计稿等比缩放，避免大屏出现过大空隙
-    CGFloat vSpace = KBFit(4.0f);
+    CGFloat vSpace = KBFit(8.0f);
     [self.pasteButtonInternal mas_makeConstraints:^(MASConstraintMaker *make) {
         make.top.equalTo(self.rightButtonContainer.mas_top);
         make.left.right.equalTo(self.rightButtonContainer);
-        make.height.mas_equalTo(smallH);
     }];
     [self.deleteButtonInternal mas_makeConstraints:^(MASConstraintMaker *make) {
         make.top.equalTo(self.pasteButtonInternal.mas_bottom).offset(vSpace);
@@ -185,10 +182,8 @@
     [self.sendButtonInternal mas_makeConstraints:^(MASConstraintMaker *make) {
         make.top.equalTo(self.clearButtonInternal.mas_bottom).offset(vSpace);
         make.left.right.equalTo(self.rightButtonContainer);
-        // 允许在空间不足时缩短到 smallH，避免产生约束冲突
-        make.height.greaterThanOrEqualTo(@(smallH));
-        make.height.lessThanOrEqualTo(@(bigH));
-        make.bottom.lessThanOrEqualTo(self.rightButtonContainer.mas_bottom);
+        make.height.equalTo(self.pasteButtonInternal);
+        make.bottom.equalTo(self.rightButtonContainer.mas_bottom);
     }];
 
     // 2. 粘贴区（位于右侧按钮左侧）