diff --git a/DesktopClock/CountdownTargetEditor.xaml b/DesktopClock/CountdownTargetEditor.xaml
index f7b0a4b..33ebe9a 100644
--- a/DesktopClock/CountdownTargetEditor.xaml
+++ b/DesktopClock/CountdownTargetEditor.xaml
@@ -32,7 +32,7 @@
                 Padding="10,7">
             <StackPanel>
                 <TextBlock Text="Preview"
-                           FontSize="11"
+                           FontSize="12"
                            Foreground="{DynamicResource TextSecondaryBrush}"
                            Margin="0,0,0,2" />
                 <TextBlock x:Name="PreviewText"
diff --git a/DesktopClock/CountdownTargetEditor.xaml.cs b/DesktopClock/CountdownTargetEditor.xaml.cs
index f52bca4..90ec553 100644
--- a/DesktopClock/CountdownTargetEditor.xaml.cs
+++ b/DesktopClock/CountdownTargetEditor.xaml.cs
@@ -70,7 +70,7 @@ private void BuildPresetButtons()
             var example = new TextBlock
             {
                 Text = getTarget().ToString("ddd, MMM d, h:mm tt"),
-                FontSize = 11.5,
+                FontSize = 12,
                 TextTrimming = TextTrimming.CharacterEllipsis,
             };
             example.SetResourceReference(ForegroundProperty, "TextSecondaryBrush");
diff --git a/DesktopClock/FormatEditor.xaml b/DesktopClock/FormatEditor.xaml
index 573d646..1cfc166 100644
--- a/DesktopClock/FormatEditor.xaml
+++ b/DesktopClock/FormatEditor.xaml
@@ -33,7 +33,7 @@
                 Padding="10,7">
             <StackPanel>
                 <TextBlock Text="Preview"
-                           FontSize="11"
+                           FontSize="12"
                            Foreground="{DynamicResource TextSecondaryBrush}"
                            Margin="0,0,0,2" />
                 <TextBlock x:Name="PreviewText"
diff --git a/DesktopClock/FormatEditor.xaml.cs b/DesktopClock/FormatEditor.xaml.cs
index 35a321b..7603760 100644
--- a/DesktopClock/FormatEditor.xaml.cs
+++ b/DesktopClock/FormatEditor.xaml.cs
@@ -133,7 +133,7 @@ private void BuildPresetButtons()
             var example = new TextBlock
             {
                 Text = FormatPreview(format),
-                FontSize = 11.5,
+                FontSize = 12,
                 TextTrimming = TextTrimming.CharacterEllipsis,
             };
             example.SetResourceReference(ForegroundProperty, "TextSecondaryBrush");
diff --git a/DesktopClock/SettingsWindow.xaml b/DesktopClock/SettingsWindow.xaml
index 6674a6b..ae9ab53 100644
--- a/DesktopClock/SettingsWindow.xaml
+++ b/DesktopClock/SettingsWindow.xaml
@@ -15,7 +15,7 @@
         ResizeMode="CanResize"
         WindowStartupLocation="CenterScreen"
         FontFamily="Segoe UI Variable Text, Segoe UI"
-        FontSize="13"
+        FontSize="14"
         UseLayoutRounding="True"
         Background="{DynamicResource WindowBackgroundBrush}"
         Foreground="{DynamicResource TextPrimaryBrush}"
diff --git a/DesktopClock/ThemePresetPicker.xaml.cs b/DesktopClock/ThemePresetPicker.xaml.cs
index aab8400..fa7cb3b 100644
--- a/DesktopClock/ThemePresetPicker.xaml.cs
+++ b/DesktopClock/ThemePresetPicker.xaml.cs
@@ -29,7 +29,7 @@ private Button CreatePresetButton(ClockTheme theme)
         var name = new TextBlock
         {
             Text = theme.Name,
-            FontSize = 11.5,
+            FontSize = 12,
             HorizontalAlignment = HorizontalAlignment.Center,
             Margin = new Thickness(0, 4, 0, 0),
         };
diff --git a/DesktopClock/Themes/FluentTheme.xaml b/DesktopClock/Themes/FluentTheme.xaml
index 8334d88..c659745 100644
--- a/DesktopClock/Themes/FluentTheme.xaml
+++ b/DesktopClock/Themes/FluentTheme.xaml
@@ -82,7 +82,7 @@
         <Setter Property="Margin" Value="0,0,0,2" />
         <Setter Property="Padding" Value="11,7,23,7" />
         <Setter Property="MinHeight" Value="34" />
-        <Setter Property="FontSize" Value="13" />
+        <Setter Property="FontSize" Value="14" />
         <Setter Property="FocusVisualStyle" Value="{x:Null}" />
         <Setter Property="SnapsToDevicePixels" Value="True" />
         <Setter Property="Template">
@@ -154,7 +154,7 @@
 
     <Style x:Key="SidebarToolDescription"
            TargetType="TextBlock">
-        <Setter Property="FontSize" Value="11" />
+        <Setter Property="FontSize" Value="12" />
         <Setter Property="FontWeight" Value="Normal" />
         <Setter Property="TextWrapping" Value="Wrap" />
         <Setter Property="Foreground" Value="{DynamicResource TextSecondaryBrush}" />
@@ -632,7 +632,8 @@
 
     <Style x:Key="DescriptionTextBlock"
            TargetType="TextBlock">
-        <Setter Property="FontSize" Value="11.5" />
+        <!-- Win11 caption size, one step under the 14px body. -->
+        <Setter Property="FontSize" Value="12" />
         <Setter Property="TextWrapping" Value="Wrap" />
         <Setter Property="Foreground" Value="{DynamicResource TextSecondaryBrush}" />
     </Style>
@@ -698,7 +699,7 @@
     <Style x:Key="MenuIconGlyph"
            TargetType="TextBlock">
         <Setter Property="FontFamily" Value="Segoe Fluent Icons, Segoe MDL2 Assets" />
-        <Setter Property="FontSize" Value="13" />
+        <Setter Property="FontSize" Value="14" />
         <Setter Property="HorizontalAlignment" Value="Center" />
         <Setter Property="VerticalAlignment" Value="Center" />
     </Style>
@@ -706,7 +707,8 @@
     <Style TargetType="{x:Type MenuItem}">
         <Setter Property="OverridesDefaultStyle" Value="True" />
         <Setter Property="Foreground" Value="{DynamicResource TextPrimaryBrush}" />
-        <Setter Property="FontSize" Value="12" />
+        <!-- Win11 flyout menus use body-size text. -->
+        <Setter Property="FontSize" Value="14" />
         <Setter Property="Template">
             <Setter.Value>
                 <ControlTemplate TargetType="{x:Type MenuItem}">