diff --git a/Ink Canvas/Windows/Controls/WinUI3CloseButton.cs b/Ink Canvas/Windows/Controls/WinUI3CloseButton.cs
new file mode 100644
index 00000000..2b4dc8b8
--- /dev/null
+++ b/Ink Canvas/Windows/Controls/WinUI3CloseButton.cs	
@@ -0,0 +1,28 @@
+using System;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Controls.Primitives;
+
+namespace Ink_Canvas.Windows.Controls
+{
+    public class WinUI3CloseButton : ButtonBase
+    {
+        static WinUI3CloseButton()
+        {
+            DefaultStyleKeyProperty.OverrideMetadata(typeof(WinUI3CloseButton), new FrameworkPropertyMetadata(typeof(WinUI3CloseButton)));
+        }
+
+        public bool IsActive
+        {
+            get => (bool)GetValue(IsActiveProperty);
+            set => SetValue(IsActiveProperty, value);
+        }
+
+        public static readonly DependencyProperty IsActiveProperty = DependencyProperty.Register(
+            nameof(IsActive),
+            typeof(bool),
+            typeof(WinUI3CloseButton),
+            new PropertyMetadata(true)
+        );
+    }
+}
diff --git a/Ink Canvas/Windows/Controls/WinUI3CloseButton.xaml b/Ink Canvas/Windows/Controls/WinUI3CloseButton.xaml
new file mode 100644
index 00000000..08da94f1
--- /dev/null
+++ b/Ink Canvas/Windows/Controls/WinUI3CloseButton.xaml	
@@ -0,0 +1,63 @@
+<ResourceDictionary
+    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    xmlns:local="clr-namespace:Ink_Canvas.Windows.Controls"
+    xmlns:system="clr-namespace:System;assembly=netstandard">
+    
+    <Style TargetType="{x:Type local:WinUI3CloseButton}">
+        <Setter Property="Width" Value="46" />
+        <Setter Property="Height" Value="32" />
+        <Setter Property="Background" Value="Transparent" />
+        <Setter Property="HorizontalContentAlignment" Value="Center" />
+        <Setter Property="VerticalContentAlignment" Value="Center" />
+        <Setter Property="Template">
+            <Setter.Value>
+                <ControlTemplate TargetType="{x:Type local:WinUI3CloseButton}">
+                    <Border
+                        x:Name="ButtonBorder"
+                        Background="{TemplateBinding Background}"
+                        BorderBrush="{TemplateBinding BorderBrush}"
+                        BorderThickness="{TemplateBinding BorderThickness}"
+                        CornerRadius="0,15,0,0">
+                        <ContentPresenter
+                            x:Name="PART_ContentPresenter"
+                            HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
+                            VerticalAlignment="{TemplateBinding VerticalContentAlignment}"
+                            Content="{TemplateBinding Content}"
+                            ContentTemplate="{TemplateBinding ContentTemplate}"
+                            ContentTemplateSelector="{TemplateBinding ContentTemplateSelector}" />
+                    </Border>
+                    <ControlTemplate.Triggers>
+                        <Trigger Property="IsActive" Value="False">
+                            <Setter TargetName="PART_ContentPresenter" Property="Opacity" Value="0.382" />
+                        </Trigger>
+                        <Trigger Property="IsEnabled" Value="False">
+                            <Setter Property="Background" Value="Transparent" />
+                            <Setter Property="Foreground" Value="#808080" />
+                        </Trigger>
+                        <Trigger Property="IsMouseOver" Value="True">
+                            <Setter TargetName="ButtonBorder" Property="Background" Value="#E81123" />
+                            <Setter Property="Foreground" Value="White" />
+                        </Trigger>
+                        <Trigger Property="IsPressed" Value="True">
+                            <Setter TargetName="ButtonBorder" Property="Background" Value="#F1707A" />
+                            <Setter Property="Foreground" Value="White" />
+                        </Trigger>
+                    </ControlTemplate.Triggers>
+                </ControlTemplate>
+            </Setter.Value>
+        </Setter>
+    </Style>
+
+    <!-- 关闭按钮图标模板 -->
+    <DataTemplate x:Key="CloseButtonIconTemplate" DataType="system:String">
+        <TextBlock
+            FontFamily="Segoe MDL2 Assets"
+            FontSize="10"
+            Text="{Binding}"
+            HorizontalAlignment="Center"
+            VerticalAlignment="Center"
+            Foreground="{Binding RelativeSource={RelativeSource AncestorType=Button}, Path=Foreground}" />
+    </DataTemplate>
+
+</ResourceDictionary>
diff --git a/Ink Canvas/Windows/SeewoStyleTimerWindow.xaml b/Ink Canvas/Windows/SeewoStyleTimerWindow.xaml
index b93f680b..67e06f13 100644
--- a/Ink Canvas/Windows/SeewoStyleTimerWindow.xaml	
+++ b/Ink Canvas/Windows/SeewoStyleTimerWindow.xaml	
@@ -5,49 +5,26 @@
         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
         xmlns:local="clr-namespace:Ink_Canvas"
         xmlns:ui="http://schemas.inkore.net/lib/ui/wpf/modern"
+        xmlns:controls="clr-namespace:Ink_Canvas.Windows.Controls"
         Topmost="True" Background="Transparent"
         mc:Ignorable="d" WindowStyle="None" AllowsTransparency="True"
         Loaded="Window_Loaded" Closing="Window_Closing" WindowStartupLocation="CenterScreen"
         Title="Ink Canvas 画板 - 计时器" Height="450" Width="900">
 
+    <Window.Resources>
+        <ResourceDictionary>
+            <ResourceDictionary.MergedDictionaries>
+                <ResourceDictionary Source="Controls/WinUI3CloseButton.xaml" />
+            </ResourceDictionary.MergedDictionaries>
+        </ResourceDictionary>
+    </Window.Resources>
+
     <Border Background="{DynamicResource SeewoTimerWindowBackground}" CornerRadius="15" BorderThickness="1" BorderBrush="{DynamicResource SeewoTimerWindowBorderBrush}" Margin="10" x:Name="MainBorder" MouseLeftButtonDown="WindowDragMove">
         <Grid>
-            <Button x:Name="CloseButton" 
-                    HorizontalAlignment="Right" VerticalAlignment="Top" 
-                    Width="46" Height="32" Margin="0,8,8,0"
-                    Background="Transparent" BorderThickness="0" 
-                    Cursor="Hand" Click="CloseButton_Click">
-                <Button.Style>
-                    <Style TargetType="Button">
-                        <Setter Property="Template">
-                            <Setter.Value>
-                                <ControlTemplate TargetType="Button">
-                                    <Border x:Name="ButtonBorder" 
-                                            Background="{TemplateBinding Background}" 
-                                            CornerRadius="4" 
-                                            BorderThickness="{TemplateBinding BorderThickness}"
-                                            BorderBrush="{TemplateBinding BorderBrush}">
-                                        <ContentPresenter x:Name="contentPresenter" 
-                                                        HorizontalAlignment="Center" 
-                                                        VerticalAlignment="Center"/>
-                                    </Border>
-                                    <ControlTemplate.Triggers>
-                                        <Trigger Property="IsMouseOver" Value="True">
-                                            <Setter TargetName="ButtonBorder" Property="Background" Value="#E81123"/>
-                                            <Setter TargetName="contentPresenter" Property="TextElement.Foreground" Value="White"/>
-                                        </Trigger>
-                                        <Trigger Property="IsPressed" Value="True">
-                                            <Setter TargetName="ButtonBorder" Property="Background" Value="#F1707A"/>
-                                            <Setter TargetName="contentPresenter" Property="TextElement.Foreground" Value="White"/>
-                                        </Trigger>
-                                    </ControlTemplate.Triggers>
-                                </ControlTemplate>
-                            </Setter.Value>
-                        </Setter>
-                    </Style>
-                </Button.Style>
-                <TextBlock x:Name="CloseButtonText" Text="✕" FontSize="10" FontWeight="Bold" Foreground="{DynamicResource SeewoTimerWindowButtonForeground}"/>
-            </Button>
+            <controls:WinUI3CloseButton x:Name="CloseButton" 
+                                        HorizontalAlignment="Right" VerticalAlignment="Top" 
+                                        Margin="0,0,0,0" Cursor="Hand" Click="CloseButton_Click"
+                                        Content="&#xE8BB;" ContentTemplate="{StaticResource CloseButtonIconTemplate}"/>
             <!-- 主要内容区域 -->
             <Grid>
                 <!-- 使用Viewbox自动缩放内容 -->