MainPage.xaml

<Page
    x:Class="vba.MainPage"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="using:vba"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    xmlns:Custom="using:Microsoft.UI.Xaml.Controls"
    mc:Ignorable="d"
    Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">

    <Grid x:Name="G1">
        <Grid.Resources>
            <!-- AcrylicBrush - 亮色 -->
            <AcrylicBrush 
                x:Key="AcrylicBrushLight" 
                BackgroundSource="HostBackdrop" 
                TintColor="White" 
                TintOpacity="0.6" 
                FallbackColor="LightGray"/>
            <!-- AcrylicBrush - 暗色 -->
            <AcrylicBrush 
                x:Key="AcrylicBrushDark" 
                BackgroundSource="HostBackdrop" 
                TintColor="Black" 
                TintOpacity="0.6" 
                FallbackColor="DarkGray"/>
        </Grid.Resources>

        <Grid.RowDefinitions>
            <!-- 自定义标题栏高度 -->
            <RowDefinition Height="48"/>
            <RowDefinition Height="*"/>
        </Grid.RowDefinitions>

        <!-- 自定义标题栏 -->
        <Grid x:Name="CustomTitleBar" Background="Transparent">
            <Grid.ColumnDefinitions>
                <!-- 留空，用于自适应系统按钮的留白 -->
                <ColumnDefinition x:Name="LeftPaddingColumn" Width="0"/>
                <ColumnDefinition/>
                <ColumnDefinition x:Name="RightPaddingColumn" Width="0"/>
            </Grid.ColumnDefinitions>
            <Image Source="Assets/StoreLogo.png" 
                   Grid.Column="1"
                   HorizontalAlignment="Left"
                   Width="16" Height="16"
                   Margin="16,0,0,0"/>
            <TextBlock x:Name="AppTitleTextBlock"
                       Text="零度UWP工具箱" 
                       Style="{StaticResource CaptionTextBlockStyle}" 
                       Grid.Column="1"
                       VerticalAlignment="Center"
                       Margin="40,0,0,0"/>
        </Grid>

        <!-- NavigationView -->
        <Custom:NavigationView
            x:Name="NavView"
            Grid.Row="1"
            IsPaneOpen="True"
            SelectionChanged="NavView_SelectionChanged"
            Loaded="NavView_Loaded"
            PaneDisplayMode="Top"
            IsSettingsVisible="False"
            BackRequested="NavView_BackRequested"
            IsTitleBarAutoPaddingEnabled ="False">

            <Custom:NavigationView.MenuItems>
                <Custom:NavigationViewItem Icon="Home" Content="主页" Tag="HomePage" />
                <Custom:NavigationViewItem Icon="ForWard" Content="关于" Tag="AboutPage"/>
                <Custom:NavigationViewItem Icon="Setting" Content="设置" Tag="SettingsPage"/>
            </Custom:NavigationView.MenuItems>

            <Frame x:Name="contentFrame" Navigated="contentFrame_Navigated"/>
        </Custom:NavigationView>
    </Grid>
</Page>