diff --git a/XplorePlane/Views/ImageProcessing/BubbleMeasurePanel.xaml b/XplorePlane/Views/ImageProcessing/BubbleMeasurePanel.xaml
index 07d443a..e4fc177 100644
--- a/XplorePlane/Views/ImageProcessing/BubbleMeasurePanel.xaml
+++ b/XplorePlane/Views/ImageProcessing/BubbleMeasurePanel.xaml
@@ -3,104 +3,116 @@
     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
     Title="气泡测量工具"
-    Width="260" Height="340"
+    Width="340" Height="380"
     ResizeMode="NoResize"
     WindowStartupLocation="CenterOwner"
-    Topmost="True"
-    ShowInTaskbar="False">
+    Topmost="True" ShowInTaskbar="False"
+    Background="#F5F5F5" FontFamily="Microsoft YaHei UI">
     <Window.Resources>
-        <Style x:Key="ToolToggleStyle" TargetType="RadioButton">
+        <Style x:Key="IconBtnStyle" TargetType="ButtonBase">
+            <Setter Property="Cursor" Value="Hand" />
             <Setter Property="Template">
                 <Setter.Value>
-                    <ControlTemplate TargetType="RadioButton">
-                        <Border x:Name="Bd" Background="#EEEEEE" BorderBrush="#CCCCCC"
-                                BorderThickness="1" CornerRadius="3" Padding="10,4" Cursor="Hand">
+                    <ControlTemplate TargetType="ButtonBase">
+                        <Border x:Name="Bd" Background="#FFFFFF" BorderBrush="#E0E0E0"
+                                BorderThickness="1" CornerRadius="6" Padding="8,6">
                             <ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center" />
                         </Border>
                         <ControlTemplate.Triggers>
-                            <Trigger Property="IsChecked" Value="True">
-                                <Setter TargetName="Bd" Property="Background" Value="#0078D7" />
-                                <Setter TargetName="Bd" Property="BorderBrush" Value="#005A9E" />
-                                <Setter Property="Foreground" Value="White" />
-                            </Trigger>
                             <Trigger Property="IsMouseOver" Value="True">
-                                <Setter TargetName="Bd" Property="Background" Value="#DDDDDD" />
+                                <Setter TargetName="Bd" Property="Background" Value="#EAF2FB" />
+                                <Setter TargetName="Bd" Property="BorderBrush" Value="#B0D4F1" />
                             </Trigger>
-                            <MultiTrigger>
-                                <MultiTrigger.Conditions>
-                                    <Condition Property="IsMouseOver" Value="True" />
-                                    <Condition Property="IsChecked" Value="True" />
-                                </MultiTrigger.Conditions>
-                                <Setter TargetName="Bd" Property="Background" Value="#006CBE" />
-                            </MultiTrigger>
+                            <DataTrigger Binding="{Binding IsChecked, RelativeSource={RelativeSource Self}}" Value="True">
+                                <Setter TargetName="Bd" Property="Background" Value="#005FB8" />
+                                <Setter TargetName="Bd" Property="BorderBrush" Value="#004C99" />
+                            </DataTrigger>
                         </ControlTemplate.Triggers>
                     </ControlTemplate>
                 </Setter.Value>
             </Setter>
         </Style>
+        <Style x:Key="CardStyle" TargetType="Border">
+            <Setter Property="Background" Value="White" />
+            <Setter Property="BorderBrush" Value="#E8E8E8" />
+            <Setter Property="BorderThickness" Value="1" />
+            <Setter Property="CornerRadius" Value="8" />
+            <Setter Property="Padding" Value="12,10" />
+            <Setter Property="Margin" Value="0,0,0,8" />
+        </Style>
+        <Style x:Key="ParamLabel" TargetType="TextBlock">
+            <Setter Property="FontSize" Value="11" />
+            <Setter Property="Foreground" Value="#555" />
+            <Setter Property="Margin" Value="0,0,0,3" />
+        </Style>
+        <Style TargetType="TextBox">
+            <Setter Property="BorderBrush" Value="#D0D0D0" />
+            <Setter Property="BorderThickness" Value="1" />
+            <Setter Property="Padding" Value="4,3" />
+            <Setter Property="FontSize" Value="11.5" />
+            <Style.Resources>
+                <Style TargetType="Border">
+                    <Setter Property="CornerRadius" Value="4" />
+                </Style>
+            </Style.Resources>
+        </Style>
     </Window.Resources>
     <StackPanel Margin="10">
-        <!-- 工具选择 -->
-        <TextBlock Text="工具" FontWeight="SemiBold" Margin="0,0,0,4" />
-        <WrapPanel>
-            <RadioButton x:Name="RbRoi" IsChecked="True" Margin="0,0,4,4"
-                         ToolTip="ROI" Style="{StaticResource ToolToggleStyle}">
+        <!-- 工具栏：工具选择 + 撤销/清除/完成 -->
+        <StackPanel Orientation="Horizontal" Margin="0,0,0,10">
+            <RadioButton x:Name="RbRoi" IsChecked="True" Style="{StaticResource IconBtnStyle}" ToolTip="ROI" Margin="0,0,4,0">
                 <Image Source="/Assets/Icons/rectangle32.png" Width="20" Height="20" />
             </RadioButton>
-            <RadioButton x:Name="RbWand" Margin="0,0,4,4"
-                         ToolTip="魔棒" Style="{StaticResource ToolToggleStyle}">
+            <RadioButton x:Name="RbWand" Style="{StaticResource IconBtnStyle}" ToolTip="魔棒" Margin="0,0,4,0">
                 <Image Source="/Assets/Icons/magic32.png" Width="20" Height="20" />
             </RadioButton>
-            <RadioButton x:Name="RbBrush" Margin="0,0,4,4"
-                         ToolTip="画笔" Style="{StaticResource ToolToggleStyle}">
+            <RadioButton x:Name="RbBrush" Style="{StaticResource IconBtnStyle}" ToolTip="画笔" Margin="0,0,4,0">
                 <Image Source="/Assets/Icons/brush32.png" Width="20" Height="20" />
             </RadioButton>
-            <RadioButton x:Name="RbEraser" Margin="0,0,0,4"
-                         ToolTip="橡皮擦" Style="{StaticResource ToolToggleStyle}">
+            <RadioButton x:Name="RbEraser" Style="{StaticResource IconBtnStyle}" ToolTip="橡皮擦" Margin="0,0,10,0">
                 <Image Source="/Assets/Icons/eraser32.png" Width="20" Height="20" />
             </RadioButton>
-        </WrapPanel>
-
-        <Separator Margin="0,6" />
-
-        <!-- 阈值 -->
-        <TextBlock Text="灰度阈值（与点击点的最大灰度差）" Margin="0,0,0,4" FontSize="11" Foreground="Gray" />
-        <DockPanel>
-            <TextBox x:Name="TbThreshold" DockPanel.Dock="Right" Width="45" Text="30"
-                     VerticalContentAlignment="Center" Margin="6,0,0,0" />
-            <Slider x:Name="SliderThreshold" Minimum="0" Maximum="60" Value="30"
-                    VerticalAlignment="Center" />
-        </DockPanel>
-
-        <!-- 画笔大小 -->
-        <TextBlock Text="画笔/橡皮大小" Margin="0,8,0,4" />
-        <DockPanel>
-            <TextBox x:Name="TbBrushSize" DockPanel.Dock="Right" Width="45" Text="5"
-                     VerticalContentAlignment="Center" Margin="6,0,0,0" />
-            <Slider x:Name="SliderBrushSize" Minimum="1" Maximum="30" Value="5"
-                    VerticalAlignment="Center" />
-        </DockPanel>
-
-        <Separator Margin="0,8" />
-
-        <!-- 结果 -->
-        <TextBlock Text="测量结果" FontWeight="SemiBold" Margin="0,0,0,4" />
-        <TextBlock x:Name="TbResult" Text="空隙率: --" FontSize="14" Margin="0,0,0,4" />
-        <DockPanel Margin="0,0,0,8">
-            <TextBlock Text="VoidLimit(%):" VerticalAlignment="Center" />
-            <TextBox x:Name="TbVoidLimit" Width="50" Text="25.0" Margin="6,0,0,0"
-                     VerticalContentAlignment="Center" />
-        </DockPanel>
-
-        <!-- 操作按钮 -->
-        <WrapPanel HorizontalAlignment="Center">
-            <Button Padding="8,4" Margin="0,0,8,0" ToolTip="撤销" Click="Undo_Click">
+            <Button Style="{StaticResource IconBtnStyle}" ToolTip="撤销" Click="Undo_Click" Margin="0,0,4,0">
                 <Image Source="/Assets/Icons/Undo.png" Width="20" Height="20" />
             </Button>
-            <Button Padding="8,4" Margin="0,0,8,0" ToolTip="清除标记" Click="ClearMask_Click">
+            <Button Style="{StaticResource IconBtnStyle}" ToolTip="清除标记" Click="ClearMask_Click" Margin="0,0,4,0">
                 <Image Source="/Assets/Icons/Clear.png" Width="20" Height="20" />
             </Button>
-            <Button Content="OK" Padding="12,4" Click="Finish_Click" />
-        </WrapPanel>
+            <Button Style="{StaticResource IconBtnStyle}" ToolTip="完成" Click="Finish_Click">
+                <Image Source="/Assets/Icons/ok.png" Width="20" Height="20" />
+            </Button>
+        </StackPanel>
+
+        <!-- 参数卡片 -->
+        <Border Style="{StaticResource CardStyle}">
+            <StackPanel>
+                <TextBlock Text="灰度阈值（与点击点的最大灰度差）" Style="{StaticResource ParamLabel}" />
+                <DockPanel Margin="0,0,0,8">
+                    <TextBox x:Name="TbThreshold" DockPanel.Dock="Right" Width="50" Text="30"
+                             VerticalContentAlignment="Center" Margin="6,0,0,0" />
+                    <Slider x:Name="SliderThreshold" Minimum="0" Maximum="60" Value="30"
+                            VerticalAlignment="Center" />
+                </DockPanel>
+                <TextBlock Text="画笔/橡皮大小" Style="{StaticResource ParamLabel}" />
+                <DockPanel>
+                    <TextBox x:Name="TbBrushSize" DockPanel.Dock="Right" Width="50" Text="5"
+                             VerticalContentAlignment="Center" Margin="6,0,0,0" />
+                    <Slider x:Name="SliderBrushSize" Minimum="1" Maximum="30" Value="5"
+                            VerticalAlignment="Center" />
+                </DockPanel>
+            </StackPanel>
+        </Border>
+
+        <!-- 结果卡片 -->
+        <Border Style="{StaticResource CardStyle}">
+            <StackPanel>
+                <TextBlock x:Name="TbResult" Text="空隙率: --" FontSize="13" FontWeight="SemiBold" Foreground="#333" Margin="0,0,0,6" />
+                <DockPanel>
+                    <TextBlock Text="VoidLimit(%):" VerticalAlignment="Center" Style="{StaticResource ParamLabel}" />
+                    <TextBox x:Name="TbVoidLimit" Width="50" Text="25.0" Margin="6,0,0,0"
+                             VerticalContentAlignment="Center" />
+                </DockPanel>
+            </StackPanel>
+        </Border>
     </StackPanel>
 </Window>
diff --git a/XplorePlane/Views/ImageProcessing/BubbleMeasurePanel.xaml.cs b/XplorePlane/Views/ImageProcessing/BubbleMeasurePanel.xaml.cs
index 8169eac..99fa7aa 100644
--- a/XplorePlane/Views/ImageProcessing/BubbleMeasurePanel.xaml.cs
+++ b/XplorePlane/Views/ImageProcessing/BubbleMeasurePanel.xaml.cs
@@ -56,6 +56,7 @@ namespace XplorePlane.Views.ImageProcessing
             };
 
             // 初始同步：确保面板默认值推送到 canvas
+            _canvas?.SetBubbleTool(PolygonRoiCanvas.BubbleSubTool.Roi);
             _canvas?.SetBubbleThreshold((int)SliderThreshold.Value);
             _canvas?.SetBubbleBrushSize((int)SliderBrushSize.Value);
             if (double.TryParse(TbVoidLimit.Text, out double initLimit))