0.4.10

自习数据采样优化

LanMountainDesktop/Views/Components/BaiduHotSearchWidget.axaml.cs

@@ -11,6 +11,7 @@ using Avalonia.Input;
 using Avalonia.Interactivity;
 using Avalonia.Layout;
 using Avalonia.Media;
+using Avalonia.Styling;
 using Avalonia.Threading;
 using LanMountainDesktop.Models;
 using LanMountainDesktop.Services;
@@ -48,6 +49,7 @@ public partial class BaiduHotSearchWidget : UserControl, IDesktopComponentWidget
     private bool _isRefreshing;
     private bool _autoRefreshEnabled = true;
     private string _sourceType = BaiduHotSearchSourceTypes.Official;
+    private bool _isNightVisual = true;
 
     private sealed record HotItemVisual(
         Border Host,
@@ -79,6 +81,7 @@ public partial class BaiduHotSearchWidget : UserControl, IDesktopComponentWidget
         AttachedToVisualTree += OnAttachedToVisualTree;
         DetachedFromVisualTree += OnDetachedFromVisualTree;
         SizeChanged += OnSizeChanged;
+        ActualThemeVariantChanged += OnActualThemeVariantChanged;
 
         ApplyCellSize(_currentCellSize);
         UpdateLanguageCode();
@@ -133,6 +136,67 @@ public partial class BaiduHotSearchWidget : UserControl, IDesktopComponentWidget
         ApplyCellSize(_currentCellSize);
     }
 
+    private void OnActualThemeVariantChanged(object? sender, EventArgs e)
+    {
+        _isNightVisual = ResolveNightMode();
+        UpdateAdaptiveLayout();
+    }
+
+    private bool ResolveNightMode()
+    {
+        if (ActualThemeVariant == ThemeVariant.Dark)
+        {
+            return true;
+        }
+
+        if (ActualThemeVariant == ThemeVariant.Light)
+        {
+            return false;
+        }
+
+        if (this.TryFindResource("AdaptiveSurfaceBaseBrush", out var value) &&
+            value is ISolidColorBrush brush)
+        {
+            return CalculateRelativeLuminance(brush.Color) < 0.45;
+        }
+
+        return true;
+    }
+
+    private static double CalculateRelativeLuminance(Color color)
+    {
+        static double ToLinear(double channel)
+        {
+            return channel <= 0.03928
+                ? channel / 12.92
+                : Math.Pow((channel + 0.055) / 1.055, 2.4);
+        }
+
+        var r = ToLinear(color.R / 255d);
+        var g = ToLinear(color.G / 255d);
+        var b = ToLinear(color.B / 255d);
+        return 0.2126 * r + 0.7152 * g + 0.0722 * b;
+    }
+
+    private void ApplyNightModeVisual()
+    {
+        CardBorder.Background = new SolidColorBrush(_isNightVisual ? Color.Parse("#1B2129") : Color.Parse("#FCFCFD"));
+        RootBorder.BorderBrush = new SolidColorBrush(_isNightVisual ? Color.Parse("#33FFFFFF") : Color.Parse("#00000000"));
+
+        BrandTextBlock.Foreground = new SolidColorBrush(_isNightVisual ? Color.Parse("#5D93FF") : Color.Parse("#2932E1"));
+
+        RefreshButton.Background = new SolidColorBrush(_isNightVisual ? Color.Parse("#2D3440") : Color.Parse("#EFF1F5"));
+        RefreshGlyphIcon.Foreground = new SolidColorBrush(_isNightVisual ? Color.Parse("#A8B1C2") : Color.Parse("#5E6671"));
+
+        foreach (var visual in _hotItemVisuals)
+        {
+            visual.IndexTextBlock.Foreground = new SolidColorBrush(_isNightVisual ? Color.Parse("#5D93FF") : Color.Parse("#2932E1"));
+            visual.TitleTextBlock.Foreground = new SolidColorBrush(_isNightVisual ? Color.Parse("#E8EAED") : Color.Parse("#202327"));
+        }
+
+        StatusTextBlock.Foreground = new SolidColorBrush(_isNightVisual ? Color.Parse("#8B95A5") : Color.Parse("#6A6F77"));
+    }
+
     private async void OnRefreshTimerTick(object? sender, EventArgs e)
     {
         await RefreshHotSearchAsync(forceRefresh: true);
@@ -375,6 +439,7 @@ public partial class BaiduHotSearchWidget : UserControl, IDesktopComponentWidget
         }
 
         StatusTextBlock.FontSize = Math.Clamp(itemFont, 10, 20);
+        ApplyNightModeVisual();
     }
 
     private void UpdateInteractionState()

LanMountainDesktop/Views/Components/BilibiliHotSearchWidget.axaml.cs

@@ -9,6 +9,7 @@ using Avalonia;
 using Avalonia.Controls;
 using Avalonia.Input;
 using Avalonia.Media;
+using Avalonia.Styling;
 using Avalonia.Threading;
 using LanMountainDesktop.Models;
 using LanMountainDesktop.Services;
@@ -46,6 +47,7 @@ public partial class BilibiliHotSearchWidget : UserControl, IDesktopComponentWid
     private bool _isAttached;
     private bool _isRefreshing;
     private bool _autoRefreshEnabled = true;
+    private bool _isNightVisual = true;
 
     private sealed record HotItemVisual(
         Border Host,
@@ -78,6 +80,7 @@ public partial class BilibiliHotSearchWidget : UserControl, IDesktopComponentWid
         AttachedToVisualTree += OnAttachedToVisualTree;
         DetachedFromVisualTree += OnDetachedFromVisualTree;
         SizeChanged += OnSizeChanged;
+        ActualThemeVariantChanged += OnActualThemeVariantChanged;
 
         ApplyCellSize(_currentCellSize);
         UpdateLanguageCode();
@@ -129,6 +132,69 @@ public partial class BilibiliHotSearchWidget : UserControl, IDesktopComponentWid
         ApplyCellSize(_currentCellSize);
     }
 
+    private void OnActualThemeVariantChanged(object? sender, EventArgs e)
+    {
+        _isNightVisual = ResolveNightMode();
+        UpdateAdaptiveLayout();
+    }
+
+    private bool ResolveNightMode()
+    {
+        if (ActualThemeVariant == ThemeVariant.Dark)
+        {
+            return true;
+        }
+
+        if (ActualThemeVariant == ThemeVariant.Light)
+        {
+            return false;
+        }
+
+        if (this.TryFindResource("AdaptiveSurfaceBaseBrush", out var value) &&
+            value is ISolidColorBrush brush)
+        {
+            return CalculateRelativeLuminance(brush.Color) < 0.45;
+        }
+
+        return true;
+    }
+
+    private static double CalculateRelativeLuminance(Color color)
+    {
+        static double ToLinear(double channel)
+        {
+            return channel <= 0.03928
+                ? channel / 12.92
+                : Math.Pow((channel + 0.055) / 1.055, 2.4);
+        }
+
+        var r = ToLinear(color.R / 255d);
+        var g = ToLinear(color.G / 255d);
+        var b = ToLinear(color.B / 255d);
+        return 0.2126 * r + 0.7152 * g + 0.0722 * b;
+    }
+
+    private void ApplyNightModeVisual()
+    {
+        CardBorder.Background = new SolidColorBrush(_isNightVisual ? Color.Parse("#1B2129") : Color.Parse("#FCFCFD"));
+        RootBorder.BorderBrush = new SolidColorBrush(_isNightVisual ? Color.Parse("#33FFFFFF") : Color.Parse("#00000000"));
+
+        SearchBoxBorder.Background = new SolidColorBrush(_isNightVisual ? Color.Parse("#2D3440") : Color.Parse("#ECF2FA"));
+        SearchBoxBorder.BorderBrush = new SolidColorBrush(_isNightVisual ? Color.Parse("#3FFFFFFF") : Color.Parse("#22000000"));
+        SearchEntryTextBlock.Foreground = new SolidColorBrush(_isNightVisual ? Color.Parse("#E8EAED") : Color.Parse("#202327"));
+        SearchGlyphIcon.Foreground = new SolidColorBrush(_isNightVisual ? Color.Parse("#A8B1C2") : Color.Parse("#5E6671"));
+
+        TopRightTitleTextBlock.Foreground = new SolidColorBrush(_isNightVisual ? Color.Parse("#F472C4") : Color.Parse("#F44C9F"));
+
+        foreach (var visual in _hotItemVisuals)
+        {
+            visual.IndexTextBlock.Foreground = new SolidColorBrush(_isNightVisual ? Color.Parse("#F472C4") : Color.Parse("#F44C9F"));
+            visual.TitleTextBlock.Foreground = new SolidColorBrush(_isNightVisual ? Color.Parse("#E8EAED") : Color.Parse("#202327"));
+        }
+
+        StatusTextBlock.Foreground = new SolidColorBrush(_isNightVisual ? Color.Parse("#8B95A5") : Color.Parse("#6A6F77"));
+    }
+
     private async void OnRefreshTimerTick(object? sender, EventArgs e)
     {
         await RefreshHotSearchAsync(forceRefresh: false);
@@ -396,6 +462,7 @@ public partial class BilibiliHotSearchWidget : UserControl, IDesktopComponentWid
         }
 
         StatusTextBlock.FontSize = Math.Clamp(itemFont, 10, 20);
+        ApplyNightModeVisual();
     }
 
     private void UpdateInteractionState()

LanMountainDesktop/Views/Components/BrowserWidget.axaml.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using Avalonia;
 using Avalonia.Controls;
 using Avalonia.Input;
@@ -12,7 +12,7 @@ using WebViewCore.Events;
 namespace LanMountainDesktop.Views.Components;
 
 public partial class BrowserWidget : UserControl, IDesktopComponentWidget
-    , IDesktopPageVisibilityAwareComponentWidget
+    , IDesktopPageVisibilityAwareComponentWidget, IDisposable
 {
     private static readonly Uri DefaultHomeUri = new("https://www.bing.com");
     private double _currentCellSize = 48;
@@ -22,6 +22,7 @@ public partial class BrowserWidget : UserControl, IDesktopComponentWidget
     private bool _isEditMode;
     private bool _isWebViewActive = true;
     private readonly WebView2RuntimeAvailability _runtimeAvailability;
+    private bool _isDisposed;
 
     public BrowserWidget()
     {
@@ -48,6 +49,26 @@ public partial class BrowserWidget : UserControl, IDesktopComponentWidget
         NavigateTo(DefaultHomeUri);
     }
 
+    public void Dispose()
+    {
+        if (_isDisposed)
+        {
+            return;
+        }
+
+        _isDisposed = true;
+
+        SizeChanged -= OnSizeChanged;
+        ActualThemeVariantChanged -= OnActualThemeVariantChanged;
+        AttachedToVisualTree -= OnAttachedToVisualTree;
+        DetachedFromVisualTree -= OnDetachedFromVisualTree;
+
+        if (_runtimeAvailability.IsAvailable)
+        {
+            BrowserWebView.NavigationStarting -= OnBrowserWebViewNavigationStarting;
+        }
+    }
+
     public void ApplyCellSize(double cellSize)
     {
         _currentCellSize = Math.Max(1, cellSize);

LanMountainDesktop/Views/Components/CnrDailyNewsWidget.axaml.cs

@@ -14,6 +14,7 @@ using Avalonia.Input;
 using Avalonia.Interactivity;
 using Avalonia.Media;
 using Avalonia.Media.Imaging;
+using Avalonia.Styling;
 using Avalonia.Threading;
 using LanMountainDesktop.Models;
 using LanMountainDesktop.Services;
@@ -88,6 +89,7 @@ public partial class CnrDailyNewsWidget : UserControl, IDesktopComponentWidget,
     private bool _isAttached;
     private bool _isRefreshing;
     private bool _autoRotateEnabled = true;
+    private bool _isNightVisual = true;
 
     public CnrDailyNewsWidget()
     {
@@ -105,6 +107,7 @@ public partial class CnrDailyNewsWidget : UserControl, IDesktopComponentWidget,
         AttachedToVisualTree += OnAttachedToVisualTree;
         DetachedFromVisualTree += OnDetachedFromVisualTree;
         SizeChanged += OnSizeChanged;
+        ActualThemeVariantChanged += OnActualThemeVariantChanged;
 
         ApplyCellSize(_currentCellSize);
         UpdateLanguageCode();
@@ -161,6 +164,66 @@ public partial class CnrDailyNewsWidget : UserControl, IDesktopComponentWidget,
         ApplyCellSize(_currentCellSize);
     }
 
+    private void OnActualThemeVariantChanged(object? sender, EventArgs e)
+    {
+        _isNightVisual = ResolveNightMode();
+        UpdateAdaptiveLayout();
+    }
+
+    private bool ResolveNightMode()
+    {
+        if (ActualThemeVariant == ThemeVariant.Dark)
+        {
+            return true;
+        }
+
+        if (ActualThemeVariant == ThemeVariant.Light)
+        {
+            return false;
+        }
+
+        if (this.TryFindResource("AdaptiveSurfaceBaseBrush", out var value) &&
+            value is ISolidColorBrush brush)
+        {
+            return CalculateRelativeLuminance(brush.Color) < 0.45;
+        }
+
+        return true;
+    }
+
+    private static double CalculateRelativeLuminance(Color color)
+    {
+        static double ToLinear(double channel)
+        {
+            return channel <= 0.03928
+                ? channel / 12.92
+                : Math.Pow((channel + 0.055) / 1.055, 2.4);
+        }
+
+        var r = ToLinear(color.R / 255d);
+        var g = ToLinear(color.G / 255d);
+        var b = ToLinear(color.B / 255d);
+        return 0.2126 * r + 0.7152 * g + 0.0722 * b;
+    }
+
+    private void ApplyNightModeVisual()
+    {
+        CardBorder.Background = new SolidColorBrush(_isNightVisual ? Color.Parse("#1B2129") : Color.Parse("#FCFCFD"));
+        RootBorder.BorderBrush = new SolidColorBrush(_isNightVisual ? Color.Parse("#33FFFFFF") : Color.Parse("#00000000"));
+
+        BrandPrimaryTextBlock.Foreground = new SolidColorBrush(_isNightVisual ? Color.Parse("#E8EAED") : Color.Parse("#202327"));
+        BrandSecondaryTextBlock.Foreground = new SolidColorBrush(_isNightVisual ? Color.Parse("#A8B1C2") : Color.Parse("#6A6F77"));
+
+        RefreshButton.Background = new SolidColorBrush(_isNightVisual ? Color.Parse("#2D3440") : Color.Parse("#EFF1F5"));
+        RefreshGlyphIcon.Foreground = new SolidColorBrush(_isNightVisual ? Color.Parse("#A8B1C2") : Color.Parse("#5E6671"));
+        RefreshLabelTextBlock.Foreground = new SolidColorBrush(_isNightVisual ? Color.Parse("#A8B1C2") : Color.Parse("#5E6671"));
+
+        News1TitleTextBlock.Foreground = new SolidColorBrush(_isNightVisual ? Color.Parse("#E8EAED") : Color.Parse("#202327"));
+        News2TitleTextBlock.Foreground = new SolidColorBrush(_isNightVisual ? Color.Parse("#E8EAED") : Color.Parse("#202327"));
+
+        StatusTextBlock.Foreground = new SolidColorBrush(_isNightVisual ? Color.Parse("#8B95A5") : Color.Parse("#6A6F77"));
+    }
+
     private async void OnRefreshButtonClick(object? sender, RoutedEventArgs e)
     {
         if (_isRefreshing)
@@ -354,9 +417,11 @@ public partial class CnrDailyNewsWidget : UserControl, IDesktopComponentWidget,
     {
         var normalizedTitle = NormalizeCompactText(title);
         var hotLabel = L("cnrnews.widget.hot_label", "Hot");
+        var primaryForeground = new SolidColorBrush(_isNightVisual ? Color.Parse("#E8EAED") : Color.Parse("#202327"));
         if (News1TitleTextBlock.Inlines is null)
         {
             News1TitleTextBlock.Text = $"{hotLabel} | {normalizedTitle}";
+            News1TitleTextBlock.Foreground = primaryForeground;
             return;
         }
 
@@ -368,7 +433,7 @@ public partial class CnrDailyNewsWidget : UserControl, IDesktopComponentWidget,
         });
         News1TitleTextBlock.Inlines.Add(new Run(normalizedTitle)
         {
-            Foreground = new SolidColorBrush(Color.Parse("#202327")),
+            Foreground = primaryForeground,
             FontWeight = FontWeight.SemiBold
         });
     }
@@ -401,7 +466,7 @@ public partial class CnrDailyNewsWidget : UserControl, IDesktopComponentWidget,
             var textBlock = new TextBlock
             {
                 Text = NormalizeCompactText(item.Title),
-                Foreground = new SolidColorBrush(Color.Parse("#202327")),
+                Foreground = new SolidColorBrush(_isNightVisual ? Color.Parse("#E8EAED") : Color.Parse("#202327")),
                 FontFamily = MiSansFontFamily,
                 FontWeight = FontWeight.SemiBold,
                 TextWrapping = TextWrapping.Wrap,
@@ -556,6 +621,8 @@ public partial class CnrDailyNewsWidget : UserControl, IDesktopComponentWidget,
         }
 
         ExtraNewsItemsPanel.Spacing = Math.Clamp(6 * scale, 3, 10);
+
+        ApplyNightModeVisual();
     }
 
     private void UpdateRefreshButtonState()

LanMountainDesktop/Views/Components/DailyPoetryWidget.axaml

@@ -1,4 +1,4 @@
-<UserControl xmlns="https://github.com/avaloniaui"
+<UserControl xmlns="https://github.com/avaloniaui"
              xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
              xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
              xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
@@ -14,9 +14,9 @@
             BorderThickness="0"
             Background="#C20A0A"
             Padding="20,16,20,14">
-        <Grid RowDefinitions="Auto,*,Auto">
+        <Grid RowDefinitions="*,Auto">
             <Canvas x:Name="DayDecorationCanvas"
-                    Grid.RowSpan="3"
+                    Grid.RowSpan="2"
                     IsVisible="False"
                     Width="212"
                     Height="148"
@@ -43,34 +43,32 @@
                              Data="M8,54 L38,24 L64,52 L8,54 Z" />
             </Canvas>
 
-            <TextBlock x:Name="QuoteMarkTextBlock"
+            <Grid Grid.Row="0" RowDefinitions="Auto,*">
-                       Text="&#8220;"
+                <TextBlock x:Name="QuoteMarkTextBlock"
-                       Foreground="#5CFAD0B7"
+                           Text="&#8220;"
-                       FontSize="96"
+                           Foreground="#5CFAD0B7"
-                       FontWeight="SemiBold"
+                           FontSize="72"
-                       HorizontalAlignment="Left"
+                           FontWeight="SemiBold"
-                       VerticalAlignment="Top"
+                           HorizontalAlignment="Left"
-                       Margin="1,0,0,0"
+                           VerticalAlignment="Top"
-                       LineHeight="86" />
+                           Margin="1,0,0,0"
+                           LineHeight="65" />
 
-            <TextBlock x:Name="PoetryContentTextBlock"
+                <TextBlock x:Name="PoetryContentTextBlock"
-                       Grid.Row="1"
+                           Grid.Row="1"
-                       Text="芳草年年惹恨幽。想前事悠悠。"
+                           Text="芳草年年惹恨幽。想前事悠悠。"
-                       Foreground="#F8D8A8"
+                           Foreground="#F8D8A8"
-                       FontSize="54"
+                           FontSize="54"
-                       FontWeight="Medium"
+                           FontWeight="Medium"
-                       LineHeight="60"
+                           LineHeight="60"
-                       TextWrapping="Wrap"
+                           TextWrapping="Wrap"
-                       VerticalAlignment="Top"
+                           MaxLines="2"
-                       Margin="8,2,0,0" />
+                           VerticalAlignment="Top"
+                           HorizontalAlignment="Left"
+                           Margin="8,2,0,0" />
+            </Grid>
 
-            <Grid x:Name="AuthorPanel"
+            <Grid Grid.Row="1" ColumnDefinitions="Auto,*" VerticalAlignment="Bottom" Margin="0,6,0,0">
-                  Grid.Row="2"
-                  ColumnDefinitions="Auto,*"
-                  HorizontalAlignment="Right"
-                  VerticalAlignment="Bottom"
-                  Margin="0,6,4,0"
-                  IsHitTestVisible="False">
                 <Border x:Name="AuthorAccent"
                         Grid.Column="0"
                         Width="6"
@@ -92,6 +90,7 @@
             </Grid>
 
             <TextBlock x:Name="StatusTextBlock"
+                       Grid.Row="0"
                        Text="Loading..."
                        IsVisible="False"
                        Foreground="#D9FFFFFF"
@@ -100,10 +99,10 @@
                        VerticalAlignment="Top" />
 
             <Button x:Name="RefreshButton"
-                    Grid.RowSpan="3"
+                    Grid.Row="1"
                     HorizontalAlignment="Right"
-                    VerticalAlignment="Top"
+                    VerticalAlignment="Bottom"
-                    Margin="0,12,16,0"
+                    Margin="0,8,4,0"
                     Width="42"
                     Height="42"
                     CornerRadius="21"
@@ -113,13 +112,12 @@
                     Padding="0"
                     Focusable="False">
                 <TextBlock x:Name="RefreshGlyphTextBlock"
-                           HorizontalAlignment="Center"
+                           Text="&#xE72C;"
-                           VerticalAlignment="Center"
+                           FontFamily="{StaticResource SymbolFontFamily}"
-                           Text="&#8635;"
+                           FontSize="22"
                            Foreground="#8C9097"
-                           FontSize="26"
+                           HorizontalAlignment="Center"
-                           FontWeight="SemiLight"
+                           VerticalAlignment="Center" />
-                           LineHeight="26" />
             </Button>
         </Grid>
     </Border>

LanMountainDesktop/Views/Components/DailyPoetryWidget.axaml.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
@@ -45,8 +45,8 @@ public partial class DailyPoetryWidget : UserControl, IDesktopComponentWidget, I
     private const double BaseCellSize = 48d;
     private const int BaseWidthCells = 4;
     private const int BaseHeightCells = 2;
-    private const double MinPoetryFontSize = 12;
+    private const double MinPoetryFontSize = 8;
-    private const double MinAuthorFontSize = 10.5;
+    private const double MinAuthorFontSize = 7;
 
     private readonly record struct TextFitResult(double FontSize, FontWeight FontWeight, double LineHeight);
 
@@ -109,7 +109,6 @@ public partial class DailyPoetryWidget : UserControl, IDesktopComponentWidget, I
             0,
             0);
 
-        AuthorPanel.Margin = new Thickness(0, Math.Clamp(5 * scale, 2, 10), Math.Clamp(4 * scale, 2, 8), 0);
         AuthorAccent.Width = Math.Clamp(6 * scale, 3.2, 9.5);
         AuthorAccent.Height = Math.Clamp(24 * scale, 12, 34);
         AuthorAccent.Margin = new Thickness(0, 0, Math.Clamp(8 * scale, 4, 13), 0);
@@ -351,11 +350,6 @@ public partial class DailyPoetryWidget : UserControl, IDesktopComponentWidget, I
 
             AuthorTextBlock.Foreground = CreateBrush("#F4D7A7");
             AuthorAccent.Background = CreateBrush("#63F2AF90");
-            AuthorPanel.Margin = new Thickness(
-                0,
-                Math.Clamp(6 * scale, 2, 10),
-                Math.Clamp(6 * scale, 2, 10),
-                Math.Clamp(1 * scale, 0, 3));
 
             DayDecorationCanvas.IsVisible = false;
             RefreshButton.IsVisible = true;
@@ -380,11 +374,6 @@ public partial class DailyPoetryWidget : UserControl, IDesktopComponentWidget, I
 
             AuthorTextBlock.Foreground = CreateBrush("#272D38");
             AuthorAccent.Background = CreateBrush("#C8090D");
-            AuthorPanel.Margin = new Thickness(
-                0,
-                Math.Clamp(6 * scale, 2, 10),
-                Math.Clamp(6 * scale, 2, 10),
-                Math.Clamp(2 * scale, 0, 4));
 
             DayDecorationCanvas.IsVisible = true;
             RefreshButton.IsVisible = true;
@@ -475,83 +464,19 @@ public partial class DailyPoetryWidget : UserControl, IDesktopComponentWidget, I
         DayDecorationCanvas.IsVisible = showDayDecorations;
         RefreshButton.IsVisible = true;
 
-        var refreshReservedWidth = RefreshButton.Width + Math.Clamp(8 * scale, 5, 14);
+        var refreshButtonWidth = 42 + Math.Clamp(8 * scale, 5, 14);
-        var decorationReservedWidth = showDayDecorations
+        var quoteMarkWidth = QuoteMarkTextBlock.IsVisible ? Math.Clamp(10 * scale, 5, 16) : 0;
-            ? Math.Clamp(innerWidth * 0.24, 34, 96)
+        
-            : 0;
+        var poemWidth = innerWidth - quoteMarkWidth - Math.Clamp(12 * scale, 6, 20);
-        var quoteReservedWidth = QuoteMarkTextBlock.IsVisible
+        poemWidth = Math.Min(Math.Max(64, poemWidth), innerWidth - Math.Clamp(16 * scale, 8, 24));
-            ? Math.Clamp(10 * scale, 5, 16)
-            : 0;
-        var poemReservedRight = Math.Max(refreshReservedWidth, decorationReservedWidth);
-        var poemWidth = innerWidth - poemReservedRight - quoteReservedWidth;
-        var poemMinWidth = Math.Max(66, innerWidth * 0.56);
-        if (poemWidth < poemMinWidth)
-        {
-            poemWidth = poemMinWidth;
-        }
-        poemWidth = Math.Min(Math.Max(64, poemWidth), innerWidth);
 
-        var authorMaxLines = innerWidth < Math.Max(_currentCellSize * 5.2, 252) ? 2 : 1;
+        var poemMaxLines = 2;
-        var authorUnitsTarget = authorMaxLines == 1 ? 20 : 12;
-        var authorWidth = Math.Max(72, Math.Min(innerWidth * (isNightMode ? 0.5 : 0.56), innerWidth - 8));
-        var authorPrepared = PrepareAuthorText(_authorRawText, authorUnitsTarget, authorMaxLines);
-        var authorPreferredFontSize = Math.Clamp((isNightMode ? 25 : 23) * scale, 12, 34);
-        var authorMinFontSize = Math.Clamp(authorPreferredFontSize * 0.72, MinAuthorFontSize, authorPreferredFontSize);
-        var authorMinWeight = isNightMode ? 500 : 470;
-        var authorMaxWeight = isNightMode ? 650 : 600;
-        authorPrepared = EnsureTextFitsAtMinSize(
-            preparedText: authorPrepared,
-            sourceText: _authorRawText,
-            targetUnits: authorUnitsTarget,
-            maxLines: authorMaxLines,
-            maxWidth: authorWidth,
-            maxHeight: Math.Max(20, innerHeight * (authorMaxLines > 1 ? 0.38 : 0.28)),
-            minFontSize: authorMinFontSize,
-            minFontWeight: ToVariableWeight(authorMinWeight),
-            lineHeightFactor: 1.12);
-
-        var authorFit = FitTextStable(
-            authorPrepared,
-            authorWidth,
-            Math.Max(20, innerHeight * (authorMaxLines > 1 ? 0.38 : 0.28)),
-            minFontSize: authorMinFontSize,
-            maxFontSize: Math.Clamp(authorPreferredFontSize * 1.15, authorMinFontSize, 42),
-            maxLines: authorMaxLines,
-            lineHeightFactor: 1.12,
-            minWeight: authorMinWeight,
-            maxWeight: authorMaxWeight);
-
-        AuthorTextBlock.Text = authorPrepared;
-        AuthorTextBlock.TextWrapping = authorMaxLines > 1 ? TextWrapping.Wrap : TextWrapping.NoWrap;
-        AuthorTextBlock.MaxLines = authorMaxLines;
-        AuthorTextBlock.MaxWidth = authorWidth;
-        AuthorTextBlock.FontSize = authorFit.FontSize;
-        AuthorTextBlock.LineHeight = authorFit.LineHeight;
-        AuthorTextBlock.FontWeight = authorFit.FontWeight;
-        AuthorPanel.MaxWidth = authorWidth + AuthorAccent.Width + AuthorAccent.Margin.Right + Math.Clamp(4 * scale, 2, 8);
-
-        var authorMeasured = MeasureTextSize(
-            authorPrepared,
-            authorFit.FontSize,
-            authorFit.FontWeight,
-            authorWidth,
-            authorFit.LineHeight);
-        var authorHeight = Math.Min(authorMeasured.Height, authorFit.LineHeight * authorMaxLines);
-        var authorBlockHeight = Math.Max(authorHeight, AuthorAccent.Height) +
-                                AuthorPanel.Margin.Top +
-                                AuthorPanel.Margin.Bottom +
-                                Math.Clamp(4 * scale, 2, 8);
-
-        var poemMaxLines = innerHeight < _currentCellSize * 1.58
-            ? 4
-            : innerHeight < _currentCellSize * 2.05
-                ? 3
-                : 2;
         var poemUnitsTarget = EstimateTargetUnitsPerLine(poemWidth, scale, isNightMode);
         var poemPrepared = PreparePoetryText(_poetryRawText, poemUnitsTarget, poemMaxLines);
-        var poemHeight = Math.Max(30, innerHeight - authorBlockHeight);
+        
-        var poemPreferredFontSize = Math.Clamp((isNightMode ? 34 : 32) * scale, 16, 56);
+        var availablePoemHeight = innerHeight * 0.72;
-        var poemMinFontSize = Math.Clamp(poemPreferredFontSize * 0.72, MinPoetryFontSize, poemPreferredFontSize);
+        var poemPreferredFontSize = Math.Clamp((isNightMode ? 34 : 32) * scale, 14, 56);
+        var poemMinFontSize = Math.Clamp(poemPreferredFontSize * 0.65, MinPoetryFontSize, poemPreferredFontSize);
         var poemMinWeight = isNightMode ? 540 : 500;
         var poemMaxWeight = isNightMode ? 760 : 680;
         poemPrepared = EnsureTextFitsAtMinSize(
@@ -560,19 +485,19 @@ public partial class DailyPoetryWidget : UserControl, IDesktopComponentWidget, I
             targetUnits: poemUnitsTarget,
             maxLines: poemMaxLines,
             maxWidth: poemWidth,
-            maxHeight: poemHeight,
+            maxHeight: availablePoemHeight,
             minFontSize: poemMinFontSize,
             minFontWeight: ToVariableWeight(poemMinWeight),
-            lineHeightFactor: 1.1);
+            lineHeightFactor: 1.12);
 
         var poemFit = FitTextStable(
             poemPrepared,
             poemWidth,
-            poemHeight,
+            availablePoemHeight,
             minFontSize: poemMinFontSize,
             maxFontSize: Math.Clamp(poemPreferredFontSize * 1.20, poemMinFontSize, 62),
             maxLines: poemMaxLines,
-            lineHeightFactor: 1.10,
+            lineHeightFactor: 1.12,
             minWeight: poemMinWeight,
             maxWeight: poemMaxWeight);
 
@@ -582,6 +507,43 @@ public partial class DailyPoetryWidget : UserControl, IDesktopComponentWidget, I
         PoetryContentTextBlock.FontSize = poemFit.FontSize;
         PoetryContentTextBlock.LineHeight = poemFit.LineHeight;
         PoetryContentTextBlock.FontWeight = poemFit.FontWeight;
+
+        var authorWidth = Math.Max(72, Math.Min(innerWidth * (isNightMode ? 0.5 : 0.56), innerWidth - 8));
+        var authorUnitsTarget = 20;
+        var authorPrepared = PrepareAuthorText(_authorRawText, authorUnitsTarget, 1);
+        var authorPreferredFontSize = Math.Clamp((isNightMode ? 25 : 23) * scale, 10, 34);
+        var authorMinFontSize = Math.Clamp(authorPreferredFontSize * 0.65, MinAuthorFontSize, authorPreferredFontSize);
+        var authorMinWeight = isNightMode ? 500 : 470;
+        var authorMaxWeight = isNightMode ? 650 : 600;
+        authorPrepared = EnsureTextFitsAtMinSize(
+            preparedText: authorPrepared,
+            sourceText: _authorRawText,
+            targetUnits: authorUnitsTarget,
+            maxLines: 1,
+            maxWidth: authorWidth,
+            maxHeight: AuthorAccent.Height,
+            minFontSize: authorMinFontSize,
+            minFontWeight: ToVariableWeight(authorMinWeight),
+            lineHeightFactor: 1.12);
+
+        var authorFit = FitTextStable(
+            authorPrepared,
+            authorWidth,
+            AuthorAccent.Height,
+            minFontSize: authorMinFontSize,
+            maxFontSize: Math.Clamp(authorPreferredFontSize * 1.15, authorMinFontSize, 42),
+            maxLines: 1,
+            lineHeightFactor: 1.12,
+            minWeight: authorMinWeight,
+            maxWeight: authorMaxWeight);
+
+        AuthorTextBlock.Text = authorPrepared;
+        AuthorTextBlock.TextWrapping = TextWrapping.NoWrap;
+        AuthorTextBlock.MaxLines = 1;
+        AuthorTextBlock.MaxWidth = authorWidth;
+        AuthorTextBlock.FontSize = authorFit.FontSize;
+        AuthorTextBlock.LineHeight = authorFit.LineHeight;
+        AuthorTextBlock.FontWeight = authorFit.FontWeight;
     }
 
     private void UpdateRefreshButtonState()

LanMountainDesktop/Views/Components/DailyWord2x2Widget.axaml.cs

@@ -9,6 +9,7 @@ using Avalonia.Controls;
 using Avalonia.Input;
 using Avalonia.Interactivity;
 using Avalonia.Media;
+using Avalonia.Styling;
 using Avalonia.VisualTree;
 using Avalonia.Threading;
 using LanMountainDesktop.Models;
@@ -44,6 +45,7 @@ public partial class DailyWord2x2Widget : UserControl, IDesktopComponentWidget,
     private bool _isAttached;
     private bool _isRefreshing;
     private bool _autoRefreshEnabled = true;
+    private bool _isNightVisual = true;
     private bool _isMeaningVisible;
 
     public DailyWord2x2Widget()
@@ -59,6 +61,7 @@ public partial class DailyWord2x2Widget : UserControl, IDesktopComponentWidget,
         AttachedToVisualTree += OnAttachedToVisualTree;
         DetachedFromVisualTree += OnDetachedFromVisualTree;
         SizeChanged += OnSizeChanged;
+        ActualThemeVariantChanged += OnActualThemeVariantChanged;
 
         ApplyCellSize(_currentCellSize);
         UpdateLanguageCode();
@@ -113,6 +116,62 @@ public partial class DailyWord2x2Widget : UserControl, IDesktopComponentWidget,
         ApplyCellSize(_currentCellSize);
     }
 
+    private void OnActualThemeVariantChanged(object? sender, EventArgs e)
+    {
+        _isNightVisual = ResolveNightMode();
+        ApplyNightModeVisual();
+    }
+
+    private bool ResolveNightMode()
+    {
+        if (ActualThemeVariant == ThemeVariant.Dark)
+        {
+            return true;
+        }
+
+        if (ActualThemeVariant == ThemeVariant.Light)
+        {
+            return false;
+        }
+
+        if (this.TryFindResource("AdaptiveSurfaceBaseBrush", out var value) &&
+            value is ISolidColorBrush brush)
+        {
+            return CalculateRelativeLuminance(brush.Color) < 0.45;
+        }
+
+        return true;
+    }
+
+    private static double CalculateRelativeLuminance(Color color)
+    {
+        static double ToLinear(double channel)
+        {
+            return channel <= 0.03928
+                ? channel / 12.92
+                : Math.Pow((channel + 0.055) / 1.055, 2.4);
+        }
+
+        var r = ToLinear(color.R / 255d);
+        var g = ToLinear(color.G / 255d);
+        var b = ToLinear(color.B / 255d);
+        return 0.2126 * r + 0.7152 * g + 0.0722 * b;
+    }
+
+    private void ApplyNightModeVisual()
+    {
+        CardBorder.Background = new SolidColorBrush(_isNightVisual ? Color.Parse("#1B2129") : Color.Parse("#FCFBFA"));
+
+        WordTextBlock.Foreground = new SolidColorBrush(_isNightVisual ? Color.Parse("#E8EAED") : Color.Parse("#2B2F35"));
+        MeaningTextBlock.Foreground = new SolidColorBrush(_isNightVisual ? Color.Parse("#A8B1C2") : Color.Parse("#5A6069"));
+        HiddenHintTextBlock.Foreground = new SolidColorBrush(_isNightVisual ? Color.Parse("#A8B1C2") : Color.Parse("#8A9099"));
+
+        RefreshButton.Background = new SolidColorBrush(_isNightVisual ? Color.Parse("#2D3440") : Color.Parse("#EEF1F4"));
+        RefreshIcon.Foreground = new SolidColorBrush(_isNightVisual ? Color.Parse("#A8B1C2") : Color.Parse("#5E6671"));
+
+        StatusTextBlock.Foreground = new SolidColorBrush(_isNightVisual ? Color.Parse("#8B95A5") : Color.Parse("#6A6F77"));
+    }
+
     private async void OnRefreshButtonClick(object? sender, RoutedEventArgs e)
     {
         if (_isRefreshing)

LanMountainDesktop/Views/Components/DailyWordWidget.axaml.cs

@@ -8,6 +8,7 @@ using Avalonia;
 using Avalonia.Controls;
 using Avalonia.Interactivity;
 using Avalonia.Media;
+using Avalonia.Styling;
 using Avalonia.Threading;
 using LanMountainDesktop.Models;
 using LanMountainDesktop.Services;
@@ -41,6 +42,7 @@ public partial class DailyWordWidget : UserControl, IDesktopComponentWidget, IRe
     private bool _isAttached;
     private bool _isRefreshing;
     private bool _autoRefreshEnabled = true;
+    private bool _isNightVisual = true;
 
     public DailyWordWidget()
     {
@@ -58,6 +60,7 @@ public partial class DailyWordWidget : UserControl, IDesktopComponentWidget, IRe
         AttachedToVisualTree += OnAttachedToVisualTree;
         DetachedFromVisualTree += OnDetachedFromVisualTree;
         SizeChanged += OnSizeChanged;
+        ActualThemeVariantChanged += OnActualThemeVariantChanged;
 
         ApplyCellSize(_currentCellSize);
         UpdateLanguageCode();
@@ -112,6 +115,64 @@ public partial class DailyWordWidget : UserControl, IDesktopComponentWidget, IRe
         ApplyCellSize(_currentCellSize);
     }
 
+    private void OnActualThemeVariantChanged(object? sender, EventArgs e)
+    {
+        _isNightVisual = ResolveNightMode();
+        ApplyNightModeVisual();
+    }
+
+    private bool ResolveNightMode()
+    {
+        if (ActualThemeVariant == ThemeVariant.Dark)
+        {
+            return true;
+        }
+
+        if (ActualThemeVariant == ThemeVariant.Light)
+        {
+            return false;
+        }
+
+        if (this.TryFindResource("AdaptiveSurfaceBaseBrush", out var value) &&
+            value is ISolidColorBrush brush)
+        {
+            return CalculateRelativeLuminance(brush.Color) < 0.45;
+        }
+
+        return true;
+    }
+
+    private static double CalculateRelativeLuminance(Color color)
+    {
+        static double ToLinear(double channel)
+        {
+            return channel <= 0.03928
+                ? channel / 12.92
+                : Math.Pow((channel + 0.055) / 1.055, 2.4);
+        }
+
+        var r = ToLinear(color.R / 255d);
+        var g = ToLinear(color.G / 255d);
+        var b = ToLinear(color.B / 255d);
+        return 0.2126 * r + 0.7152 * g + 0.0722 * b;
+    }
+
+    private void ApplyNightModeVisual()
+    {
+        CardBorder.Background = new SolidColorBrush(_isNightVisual ? Color.Parse("#1B2129") : Color.Parse("#FCFBFA"));
+
+        WordTextBlock.Foreground = new SolidColorBrush(_isNightVisual ? Color.Parse("#FF9D6C") : Color.Parse("#F07541"));
+        PronunciationTextBlock.Foreground = new SolidColorBrush(_isNightVisual ? Color.Parse("#A8B1C2") : Color.Parse("#6B7078"));
+        MeaningTextBlock.Foreground = new SolidColorBrush(_isNightVisual ? Color.Parse("#E8EAED") : Color.Parse("#2B2F35"));
+        ExampleTextBlock.Foreground = new SolidColorBrush(_isNightVisual ? Color.Parse("#E8EAED") : Color.Parse("#2B2F35"));
+        ExampleTranslationTextBlock.Foreground = new SolidColorBrush(_isNightVisual ? Color.Parse("#A8B1C2") : Color.Parse("#7A8088"));
+
+        RefreshButton.Background = new SolidColorBrush(_isNightVisual ? Color.Parse("#2D3440") : Color.Parse("#14A0A6AF"));
+        RefreshIcon.Foreground = new SolidColorBrush(_isNightVisual ? Color.Parse("#A8B1C2") : Color.Parse("#626870"));
+
+        StatusTextBlock.Foreground = new SolidColorBrush(_isNightVisual ? Color.Parse("#8B95A5") : Color.Parse("#6A6F77"));
+    }
+
     private async void OnRefreshButtonClick(object? sender, RoutedEventArgs e)
     {
         if (_isRefreshing)
@@ -229,6 +290,14 @@ public partial class DailyWordWidget : UserControl, IDesktopComponentWidget, IRe
         var totalWidth = Bounds.Width > 1 ? Bounds.Width : _currentCellSize * BaseWidthCells;
         var totalHeight = Bounds.Height > 1 ? Bounds.Height : _currentCellSize * BaseHeightCells;
 
+        var isFourByThree = false;
+        if (Bounds.Width > 1 && Bounds.Height > 1)
+        {
+            var widthRatio = Bounds.Width / (_currentCellSize * BaseWidthCells);
+            var heightRatio = Bounds.Height / (_currentCellSize * BaseHeightCells);
+            isFourByThree = widthRatio >= 0.9 && heightRatio >= 1.35;
+        }
+
         RootBorder.CornerRadius = new CornerRadius(Math.Clamp(34 * scale, 16, 52));
         RootBorder.Padding = new Thickness(0);
 
@@ -261,15 +330,15 @@ public partial class DailyWordWidget : UserControl, IDesktopComponentWidget, IRe
         ExampleTranslationTextBlock.MaxWidth = contentWidth;
 
         var compactLayout = totalHeight < _currentCellSize * 1.72;
-        MeaningTextBlock.MaxLines = compactLayout ? 1 : 2;
+        MeaningTextBlock.MaxLines = compactLayout ? 1 : (isFourByThree ? 3 : 2);
-        ExampleTextBlock.MaxLines = compactLayout ? 1 : 2;
+        ExampleTextBlock.MaxLines = compactLayout ? 1 : (isFourByThree ? 4 : 2);
-        ExampleTranslationTextBlock.IsVisible = !compactLayout;
+        ExampleTranslationTextBlock.IsVisible = !compactLayout || isFourByThree;
-        ExampleTranslationTextBlock.MaxLines = 1;
+        ExampleTranslationTextBlock.MaxLines = isFourByThree ? 2 : 1;
 
         var contentHeight = Math.Max(52, totalHeight - RootBorder.Padding.Top - RootBorder.Padding.Bottom - CardBorder.Padding.Top - CardBorder.Padding.Bottom);
         var wordHeightBudget = Math.Max(18, contentHeight * 0.24);
         var pronunciationHeightBudget = Math.Max(14, contentHeight * 0.16);
-        var meaningHeightBudget = Math.Max(16, contentHeight * (compactLayout ? 0.26 : 0.30));
+        var meaningHeightBudget = Math.Max(16, contentHeight * (compactLayout ? 0.26 : (isFourByThree ? 0.35 : 0.30)));
         var exampleHeightBudget = Math.Max(16, contentHeight - wordHeightBudget - pronunciationHeightBudget - meaningHeightBudget - Math.Clamp(16 * scale, 8, 24));
         if (!ExampleTranslationTextBlock.IsVisible)
         {
@@ -433,11 +502,26 @@ public partial class DailyWordWidget : UserControl, IDesktopComponentWidget, IRe
     private double ResolveScale()
     {
         var cellScale = Math.Clamp(_currentCellSize / BaseCellSize, 0.56, 2.0);
+        
+        var widthCells = BaseWidthCells;
+        var heightCells = BaseHeightCells;
+        
+        if (Bounds.Width > 1 && Bounds.Height > 1)
+        {
+            var widthRatio = Bounds.Width / (_currentCellSize * widthCells);
+            var heightRatio = Bounds.Height / (_currentCellSize * heightCells);
+            
+            if (widthRatio >= 0.9 && heightRatio >= 1.35)
+            {
+                heightCells = 3;
+            }
+        }
+        
         var widthScale = Bounds.Width > 1
-            ? Math.Clamp(Bounds.Width / Math.Max(1, _currentCellSize * BaseWidthCells), 0.56, 2.0)
+            ? Math.Clamp(Bounds.Width / Math.Max(1, _currentCellSize * widthCells), 0.56, 2.0)
             : 1;
         var heightScale = Bounds.Height > 1
-            ? Math.Clamp(Bounds.Height / Math.Max(1, _currentCellSize * BaseHeightCells), 0.56, 2.0)
+            ? Math.Clamp(Bounds.Height / Math.Max(1, _currentCellSize * heightCells), 0.56, 2.0)
             : 1;
         return Math.Clamp(Math.Min(cellScale, Math.Min(widthScale, heightScale)), 0.56, 2.0);
     }

LanMountainDesktop/Views/Components/IfengNewsWidget.axaml.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.Diagnostics;
 using System.IO;
@@ -13,6 +13,7 @@ using Avalonia.Input;
 using Avalonia.Interactivity;
 using Avalonia.Media;
 using Avalonia.Media.Imaging;
+using Avalonia.Styling;
 using Avalonia.Threading;
 using LanMountainDesktop.Models;
 using LanMountainDesktop.Services;
@@ -58,6 +59,7 @@ public partial class IfengNewsWidget : UserControl, IDesktopComponentWidget, IRe
     private bool _isAttached;
     private bool _isRefreshing;
     private bool _autoRefreshEnabled = true;
+    private bool _isNightVisual = true;
 
     private sealed record NewsItemVisual(
         Border Host,
@@ -86,6 +88,7 @@ public partial class IfengNewsWidget : UserControl, IDesktopComponentWidget, IRe
         AttachedToVisualTree += OnAttachedToVisualTree;
         DetachedFromVisualTree += OnDetachedFromVisualTree;
         SizeChanged += OnSizeChanged;
+        ActualThemeVariantChanged += OnActualThemeVariantChanged;
 
         ApplyCellSize(_currentCellSize);
         UpdateLanguageCode();
@@ -141,6 +144,67 @@ public partial class IfengNewsWidget : UserControl, IDesktopComponentWidget, IRe
         ApplyCellSize(_currentCellSize);
     }
 
+    private void OnActualThemeVariantChanged(object? sender, EventArgs e)
+    {
+        _isNightVisual = ResolveNightMode();
+        UpdateAdaptiveLayout();
+    }
+
+    private bool ResolveNightMode()
+    {
+        if (ActualThemeVariant == ThemeVariant.Dark)
+        {
+            return true;
+        }
+
+        if (ActualThemeVariant == ThemeVariant.Light)
+        {
+            return false;
+        }
+
+        if (this.TryFindResource("AdaptiveSurfaceBaseBrush", out var value) &&
+            value is ISolidColorBrush brush)
+        {
+            return CalculateRelativeLuminance(brush.Color) < 0.45;
+        }
+
+        return true;
+    }
+
+    private static double CalculateRelativeLuminance(Color color)
+    {
+        static double ToLinear(double channel)
+        {
+            return channel <= 0.03928
+                ? channel / 12.92
+                : Math.Pow((channel + 0.055) / 1.055, 2.4);
+        }
+
+        var r = ToLinear(color.R / 255d);
+        var g = ToLinear(color.G / 255d);
+        var b = ToLinear(color.B / 255d);
+        return 0.2126 * r + 0.7152 * g + 0.0722 * b;
+    }
+
+    private void ApplyNightModeVisual()
+    {
+        CardBorder.Background = new SolidColorBrush(_isNightVisual ? Color.Parse("#1B2129") : Color.Parse("#FCFCFD"));
+        RootBorder.BorderBrush = new SolidColorBrush(_isNightVisual ? Color.Parse("#33FFFFFF") : Color.Parse("#00000000"));
+
+        BrandTextBlock.Foreground = new SolidColorBrush(_isNightVisual ? Color.Parse("#E8EAED") : Color.Parse("#202327"));
+
+        RefreshButton.Background = new SolidColorBrush(_isNightVisual ? Color.Parse("#2D3440") : Color.Parse("#EFF1F5"));
+        RefreshGlyphIcon.Foreground = new SolidColorBrush(_isNightVisual ? Color.Parse("#A8B1C2") : Color.Parse("#5E6671"));
+
+        foreach (var visual in _itemVisuals)
+        {
+            visual.Host.Background = new SolidColorBrush(_isNightVisual ? Color.Parse("#2D3440") : Color.Parse("#F7F8FA"));
+            visual.TitleTextBlock.Foreground = new SolidColorBrush(_isNightVisual ? Color.Parse("#E8EAED") : Color.Parse("#202327"));
+        }
+
+        StatusTextBlock.Foreground = new SolidColorBrush(_isNightVisual ? Color.Parse("#8B95A5") : Color.Parse("#6A6F77"));
+    }
+
     private async void OnRefreshTimerTick(object? sender, EventArgs e)
     {
         await RefreshNewsAsync(forceRefresh: true);
@@ -398,6 +462,7 @@ public partial class IfengNewsWidget : UserControl, IDesktopComponentWidget, IRe
         }
 
         StatusTextBlock.FontSize = Math.Clamp(titleFont, 10, 20);
+        ApplyNightModeVisual();
     }
 
     private void UpdateInteractionState()

LanMountainDesktop/Views/Components/RecordingWidget.axaml.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.Globalization;
 using System.IO;
@@ -8,13 +8,14 @@ using Avalonia.Controls;
 using Avalonia.Input;
 using Avalonia.Media;
 using Avalonia.Platform.Storage;
+using Avalonia.Styling;
 using Avalonia.Threading;
 using LanMountainDesktop.Models;
 using LanMountainDesktop.Services;
 
 namespace LanMountainDesktop.Views.Components;
 
-public partial class RecordingWidget : UserControl, IDesktopComponentWidget, IDesktopPageVisibilityAwareComponentWidget
+public partial class RecordingWidget : UserControl, IDesktopComponentWidget, IDesktopPageVisibilityAwareComponentWidget, IDisposable
 {
     private const int WaveBarCount = 22;
 
@@ -36,6 +37,8 @@ public partial class RecordingWidget : UserControl, IDesktopComponentWidget, IDe
     private bool _isAttached;
     private bool _isOnActivePage = true;
     private bool _pausedStudyMonitoringForRecording;
+    private bool _isNightVisual = true;
+    private bool _isDisposed;
 
     public RecordingWidget()
     {
@@ -45,6 +48,7 @@ public partial class RecordingWidget : UserControl, IDesktopComponentWidget, IDe
         AttachedToVisualTree += OnAttachedToVisualTree;
         DetachedFromVisualTree += OnDetachedFromVisualTree;
         SizeChanged += OnSizeChanged;
+        ActualThemeVariantChanged += OnActualThemeVariantChanged;
 
         InitializeWaveBars();
         ReloadLanguageCode();
@@ -146,6 +150,68 @@ public partial class RecordingWidget : UserControl, IDesktopComponentWidget, IDe
         ApplyCellSize(_currentCellSize);
     }
 
+    private void OnActualThemeVariantChanged(object? sender, EventArgs e)
+    {
+        _isNightVisual = ResolveNightMode();
+        ApplyNightModeVisual();
+    }
+
+    private bool ResolveNightMode()
+    {
+        if (ActualThemeVariant == ThemeVariant.Dark)
+        {
+            return true;
+        }
+
+        if (ActualThemeVariant == ThemeVariant.Light)
+        {
+            return false;
+        }
+
+        if (this.TryFindResource("AdaptiveSurfaceBaseBrush", out var value) &&
+            value is ISolidColorBrush brush)
+        {
+            return CalculateRelativeLuminance(brush.Color) < 0.45;
+        }
+
+        return true;
+    }
+
+    private static double CalculateRelativeLuminance(Color color)
+    {
+        static double ToLinear(double channel)
+        {
+            return channel <= 0.03928
+                ? channel / 12.92
+                : Math.Pow((channel + 0.055) / 1.055, 2.4);
+        }
+
+        var r = ToLinear(color.R / 255d);
+        var g = ToLinear(color.G / 255d);
+        var b = ToLinear(color.B / 255d);
+        return 0.2126 * r + 0.7152 * g + 0.0722 * b;
+    }
+
+    private void ApplyNightModeVisual()
+    {
+        RootBorder.Background = new SolidColorBrush(_isNightVisual ? Color.Parse("#1B2129") : Color.Parse("#ECEFF3"));
+        RootBorder.BorderBrush = new SolidColorBrush(_isNightVisual ? Color.Parse("#33FFFFFF") : Color.Parse("#D9DEE7"));
+
+        TitleTextBlock.Foreground = new SolidColorBrush(_isNightVisual ? Color.Parse("#E8EAED") : Color.Parse("#11151D"));
+        TimerTextBlock.Foreground = new SolidColorBrush(_isNightVisual ? Color.Parse("#A8B1C2") : Color.Parse("#A4A9B2"));
+        FutureLine.Background = new SolidColorBrush(_isNightVisual ? Color.Parse("#A8B1C2") : Color.Parse("#A3A8B3"));
+
+        DiscardButtonBorder.Background = new SolidColorBrush(_isNightVisual ? Color.Parse("#2D3440") : Color.Parse("#F8FAFD"));
+        DiscardButtonBorder.BorderBrush = new SolidColorBrush(_isNightVisual ? Color.Parse("#3D4451") : Color.Parse("#E0E5EC"));
+        DiscardIcon.Foreground = new SolidColorBrush(_isNightVisual ? Color.Parse("#E8EAED") : Color.Parse("#141922"));
+
+        SaveButtonBorder.Background = new SolidColorBrush(_isNightVisual ? Color.Parse("#2D3440") : Color.Parse("#F8FAFD"));
+        SaveButtonBorder.BorderBrush = new SolidColorBrush(_isNightVisual ? Color.Parse("#3D4451") : Color.Parse("#E0E5EC"));
+        SaveIcon.Foreground = new SolidColorBrush(_isNightVisual ? Color.Parse("#E8EAED") : Color.Parse("#141922"));
+
+        HintTextBlock.Foreground = new SolidColorBrush(_isNightVisual ? Color.Parse("#8B95A5") : Color.Parse("#7A818E"));
+    }
+
     private void OnUiTick(object? sender, EventArgs e)
     {
         if (!_isAttached || !_isOnActivePage)
@@ -291,11 +357,18 @@ public partial class RecordingWidget : UserControl, IDesktopComponentWidget, IDe
         SaveButtonBorder.Opacity = SaveButtonBorder.IsHitTestVisible ? 1 : 0.42;
         RecordToggleButtonBorder.Opacity = RecordToggleButtonBorder.IsHitTestVisible ? 1 : 0.54;
 
-        TimerTextBlock.Foreground = CreateBrush(!isSupported
+        if (!isSupported)
-            ? "#B2B7C0"
+        {
-            : isReady
+            TimerTextBlock.Foreground = CreateBrush(_isNightVisual ? "#A8B1C2" : "#B2B7C0");
-                ? "#A4A9B2"
+        }
-                : "#151922");
+        else if (isReady)
+        {
+            TimerTextBlock.Foreground = CreateBrush(_isNightVisual ? "#A8B1C2" : "#A4A9B2");
+        }
+        else
+        {
+            TimerTextBlock.Foreground = CreateBrush(_isNightVisual ? "#E8EAED" : "#151922");
+        }
         HintTextBlock.IsVisible = !isReady || !isSupported;
 
         RecordDot.IsVisible = snapshot.State == AudioRecorderRuntimeState.Ready;
@@ -540,4 +613,23 @@ public partial class RecordingWidget : UserControl, IDesktopComponentWidget, IDe
 
         return (false, path.LocalPath);
     }
+
+    public void Dispose()
+    {
+        if (_isDisposed)
+        {
+            return;
+        }
+
+        _isDisposed = true;
+
+        _uiTimer.Stop();
+        _uiTimer.Tick -= OnUiTick;
+        AttachedToVisualTree -= OnAttachedToVisualTree;
+        DetachedFromVisualTree -= OnDetachedFromVisualTree;
+        SizeChanged -= OnSizeChanged;
+        ActualThemeVariantChanged -= OnActualThemeVariantChanged;
+
+        _audioRecorderService.Dispose();
+    }
 }

LanMountainDesktop/Views/Components/Stcn24ForumWidget.axaml.cs

@@ -13,6 +13,7 @@ using Avalonia.Input;
 using Avalonia.Interactivity;
 using Avalonia.Media;
 using Avalonia.Media.Imaging;
+using Avalonia.Styling;
 using Avalonia.Threading;
 using LanMountainDesktop.Models;
 using LanMountainDesktop.Services;
@@ -60,6 +61,7 @@ public partial class Stcn24ForumWidget : UserControl, IDesktopComponentWidget, I
     private bool _isAttached;
     private bool _isRefreshing;
     private bool _autoRefreshEnabled = true;
+    private bool _isNightVisual = true;
 
     private sealed record ForumItemVisual(
         Border Host,
@@ -153,6 +155,7 @@ public partial class Stcn24ForumWidget : UserControl, IDesktopComponentWidget, I
         AttachedToVisualTree += OnAttachedToVisualTree;
         DetachedFromVisualTree += OnDetachedFromVisualTree;
         SizeChanged += OnSizeChanged;
+        ActualThemeVariantChanged += OnActualThemeVariantChanged;
 
         ApplyCellSize(_currentCellSize);
         UpdateLanguageCode();
@@ -208,6 +211,70 @@ public partial class Stcn24ForumWidget : UserControl, IDesktopComponentWidget, I
         ApplyCellSize(_currentCellSize);
     }
 
+    private void OnActualThemeVariantChanged(object? sender, EventArgs e)
+    {
+        _isNightVisual = ResolveNightMode();
+        UpdateAdaptiveLayout();
+    }
+
+    private bool ResolveNightMode()
+    {
+        if (ActualThemeVariant == ThemeVariant.Dark)
+        {
+            return true;
+        }
+
+        if (ActualThemeVariant == ThemeVariant.Light)
+        {
+            return false;
+        }
+
+        if (this.TryFindResource("AdaptiveSurfaceBaseBrush", out var value) &&
+            value is ISolidColorBrush brush)
+        {
+            return CalculateRelativeLuminance(brush.Color) < 0.45;
+        }
+
+        return true;
+    }
+
+    private static double CalculateRelativeLuminance(Color color)
+    {
+        static double ToLinear(double channel)
+        {
+            return channel <= 0.03928
+                ? channel / 12.92
+                : Math.Pow((channel + 0.055) / 1.055, 2.4);
+        }
+
+        var r = ToLinear(color.R / 255d);
+        var g = ToLinear(color.G / 255d);
+        var b = ToLinear(color.B / 255d);
+        return 0.2126 * r + 0.7152 * g + 0.0722 * b;
+    }
+
+    private void ApplyNightModeVisual()
+    {
+        CardBorder.Background = new SolidColorBrush(_isNightVisual ? Color.Parse("#1B2129") : Color.Parse("#FCFCFD"));
+        RootBorder.BorderBrush = new SolidColorBrush(_isNightVisual ? Color.Parse("#33FFFFFF") : Color.Parse("#00000000"));
+
+        HeaderTitleTextBlock.Foreground = new SolidColorBrush(_isNightVisual ? Color.Parse("#E8EAED") : Color.Parse("#202327"));
+        HeaderDot.Background = new SolidColorBrush(_isNightVisual ? Color.Parse("#FF6B6B") : Color.Parse("#FF4D4F"));
+
+        RefreshButton.Background = new SolidColorBrush(_isNightVisual ? Color.Parse("#2D3440") : Color.Parse("#EFF1F5"));
+        RefreshGlyphIcon.Foreground = new SolidColorBrush(_isNightVisual ? Color.Parse("#A8B1C2") : Color.Parse("#5E6671"));
+
+        foreach (var visual in _itemVisuals)
+        {
+            visual.Host.Background = new SolidColorBrush(_isNightVisual ? Color.Parse("#2D3440") : Color.Parse("#F7F8FA"));
+            visual.AvatarHost.Background = new SolidColorBrush(_isNightVisual ? Color.Parse("#3D4451") : Color.Parse("#E7EBF4"));
+            visual.AvatarFallbackText.Foreground = new SolidColorBrush(_isNightVisual ? Color.Parse("#A8B1C2") : Color.Parse("#4A5466"));
+            visual.TitleTextBlock.Foreground = new SolidColorBrush(_isNightVisual ? Color.Parse("#E8EAED") : Color.Parse("#202327"));
+        }
+
+        StatusTextBlock.Foreground = new SolidColorBrush(_isNightVisual ? Color.Parse("#8B95A5") : Color.Parse("#6A6F77"));
+    }
+
     private async void OnRefreshButtonClick(object? sender, RoutedEventArgs e)
     {
         if (_isRefreshing)
@@ -606,6 +673,8 @@ public partial class Stcn24ForumWidget : UserControl, IDesktopComponentWidget, I
 
         StatusTextBlock.FontSize = Math.Clamp(14 * softScale, 10, 18);
 
+        ApplyNightModeVisual();
+
         if (_visibleItemCount != previousVisibleItemCount &&
             _isAttached &&
             !_isRefreshing &&

LanMountainDesktop/Views/Components/StudyEnvironmentWidget.axaml.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Globalization;
 using Avalonia;
 using Avalonia.Controls;
@@ -9,7 +9,7 @@ using LanMountainDesktop.Services;
 
 namespace LanMountainDesktop.Views.Components;
 
-public partial class StudyEnvironmentWidget : UserControl, IDesktopComponentWidget, IDesktopPageVisibilityAwareComponentWidget
+public partial class StudyEnvironmentWidget : UserControl, IDesktopComponentWidget, IDesktopPageVisibilityAwareComponentWidget, IDisposable
 {
     private readonly IStudyAnalyticsService _studyAnalyticsService = StudyAnalyticsServiceFactory.CreateDefault();
     private readonly StudyAnalyticsMonitoringLeaseCoordinator _monitoringLeaseCoordinator = StudyAnalyticsMonitoringLeaseCoordinatorFactory.CreateDefault();
@@ -27,6 +27,7 @@ public partial class StudyEnvironmentWidget : UserControl, IDesktopComponentWidg
     private string _languageCode = "zh-CN";
     private bool _isAttached;
     private bool _isOnActivePage = true;
+    private bool _isDisposed;
     private IDisposable? _monitoringLease;
 
     public StudyEnvironmentWidget()
@@ -63,8 +64,16 @@ public partial class StudyEnvironmentWidget : UserControl, IDesktopComponentWidg
     public void SetDesktopPageContext(bool isOnActivePage, bool isEditMode)
     {
         _ = isEditMode;
+        var wasOnActivePage = _isOnActivePage;
         _isOnActivePage = isOnActivePage;
+        
         UpdateMonitoringLeaseState();
+        
+        if (isOnActivePage && !wasOnActivePage)
+        {
+            RefreshVisual();
+        }
+        
         UpdateTimerState();
     }
 
@@ -115,8 +124,7 @@ public partial class StudyEnvironmentWidget : UserControl, IDesktopComponentWidg
 
     private void UpdateMonitoringLeaseState()
     {
-        var shouldMonitor = _isAttached && _isOnActivePage;
+        if (_isAttached)
-        if (shouldMonitor)
         {
             _monitoringLease ??= _monitoringLeaseCoordinator.AcquireLease();
             return;
@@ -329,4 +337,23 @@ public partial class StudyEnvironmentWidget : UserControl, IDesktopComponentWidg
 
         return CreateBrush(fallbackHex);
     }
+
+    public void Dispose()
+    {
+        if (_isDisposed)
+        {
+            return;
+        }
+
+        _isDisposed = true;
+
+        _uiTimer.Stop();
+        _uiTimer.Tick -= OnUiTimerTick;
+        AttachedToVisualTree -= OnAttachedToVisualTree;
+        DetachedFromVisualTree -= OnDetachedFromVisualTree;
+        SizeChanged -= OnSizeChanged;
+
+        _monitoringLease?.Dispose();
+        _monitoringLease = null;
+    }
 }

LanMountainDesktop/Views/Components/StudyNoiseCurveWidget.axaml.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.Globalization;
 using Avalonia;
@@ -11,7 +11,7 @@ using LanMountainDesktop.Theme;
 
 namespace LanMountainDesktop.Views.Components;
 
-public partial class StudyNoiseCurveWidget : UserControl, IDesktopComponentWidget, IDesktopPageVisibilityAwareComponentWidget
+public partial class StudyNoiseCurveWidget : UserControl, IDesktopComponentWidget, IDesktopPageVisibilityAwareComponentWidget, IDisposable
 {
     private const double NormalTextMinContrast = 4.5;
     private const double LargeTextMinContrast = 4.5;
@@ -69,6 +69,7 @@ public partial class StudyNoiseCurveWidget : UserControl, IDesktopComponentWidge
     private bool _isAttached;
     private bool _isOnActivePage = true;
     private bool _isSubscribed;
+    private bool _isDisposed;
     private int _framesSinceCompaction;
     private IDisposable? _monitoringLease;
 
@@ -131,8 +132,20 @@ public partial class StudyNoiseCurveWidget : UserControl, IDesktopComponentWidge
     public void SetDesktopPageContext(bool isOnActivePage, bool isEditMode)
     {
         _ = isEditMode;
+        var wasOnActivePage = _isOnActivePage;
         _isOnActivePage = isOnActivePage;
+        
         UpdateMonitoringLeaseState();
+        
+        if (isOnActivePage && !wasOnActivePage)
+        {
+            lock (_snapshotSync)
+            {
+                _pendingSnapshot = _studyAnalyticsService.GetSnapshot();
+                _hasPendingSnapshot = true;
+            }
+        }
+        
         UpdateRenderLoopState();
     }
 
@@ -231,8 +244,7 @@ public partial class StudyNoiseCurveWidget : UserControl, IDesktopComponentWidge
 
     private void UpdateMonitoringLeaseState()
     {
-        var shouldMonitor = _isAttached && _isOnActivePage;
+        if (_isAttached)
-        if (shouldMonitor)
         {
             _monitoringLease ??= _monitoringLeaseCoordinator.AcquireLease();
             return;
@@ -553,4 +565,29 @@ public partial class StudyNoiseCurveWidget : UserControl, IDesktopComponentWidge
     {
         return _localizationService.GetString(_languageCode, key, fallback);
     }
+
+    public void Dispose()
+    {
+        if (_isDisposed)
+        {
+            return;
+        }
+
+        _isDisposed = true;
+
+        _renderTimer.Stop();
+        _renderTimer.Tick -= OnRenderTimerTick;
+        AttachedToVisualTree -= OnAttachedToVisualTree;
+        DetachedFromVisualTree -= OnDetachedFromVisualTree;
+        SizeChanged -= OnSizeChanged;
+
+        if (_isSubscribed)
+        {
+            _studyAnalyticsService.SnapshotUpdated -= OnStudySnapshotUpdated;
+            _isSubscribed = false;
+        }
+
+        _monitoringLease?.Dispose();
+        _monitoringLease = null;
+    }
 }

LanMountainDesktop/Views/Components/StudyNoiseDistributionScatterChartControl.cs

@@ -14,10 +14,10 @@ public sealed class StudyNoiseDistributionScatterChartControl : Control
     private static readonly Pen GridPen = new(GridBrush, 1);
     private static readonly Pen AxisPen = new(AxisBrush, 1.1);
 
-    private static readonly IBrush QuietPointBrush = new SolidColorBrush(Color.Parse("#FF34D399"));
+    private static readonly IBrush QuietBrush = new SolidColorBrush(Color.Parse("#FF34D399"));
-    private static readonly IBrush NormalPointBrush = new SolidColorBrush(Color.Parse("#FF60A5FA"));
+    private static readonly IBrush NormalBrush = new SolidColorBrush(Color.Parse("#FF60A5FA"));
-    private static readonly IBrush NoisyPointBrush = new SolidColorBrush(Color.Parse("#FFF59E0B"));
+    private static readonly IBrush NoisyBrush = new SolidColorBrush(Color.Parse("#FFF59E0B"));
-    private static readonly IBrush ExtremePointBrush = new SolidColorBrush(Color.Parse("#FFEF4444"));
+    private static readonly IBrush ExtremeBrush = new SolidColorBrush(Color.Parse("#FFEF4444"));
 
     private IReadOnlyList<NoiseRealtimePoint> _points = Array.Empty<NoiseRealtimePoint>();
     private double _baselineDb = 45;
@@ -47,34 +47,102 @@ public sealed class StudyNoiseDistributionScatterChartControl : Control
 
         DrawGrid(context, plot);
 
-        if (_points.Count == 0)
+        if (_points.Count < 2)
         {
             return;
         }
 
+        DrawElectronCloud(context, plot);
+    }
+
+    private void DrawElectronCloud(DrawingContext context, Rect plot)
+    {
         var start = _points[0].Timestamp;
         var end = _points[^1].Timestamp;
         var totalTicks = Math.Max(1, (end - start).Ticks);
 
-        var maxRenderPoints = Math.Clamp((int)Math.Floor(plot.Width * 1.5), 80, 520);
+        var pointCount = _points.Count;
-        var step = Math.Max(1, _points.Count / Math.Max(1, maxRenderPoints));
+        var cloudLayers = 8;
-        var radius = Math.Clamp(Math.Min(plot.Width, plot.Height) / 88d, 1.4, 3.8);
+        var baseRadius = Math.Clamp(Math.Min(plot.Width, plot.Height) / 45d, 3, 12);
-
+        
-        for (var i = 0; i < _points.Count; i += step)
+        var sortedPoints = new List<(double X, double Y, NoiseDistributionLevel Level)>();
+        for (var i = 0; i < pointCount; i++)
         {
             var point = _points[i];
-            var level = ResolveLevel(point.DisplayDb, _baselineDb);
             var x = MapX(plot, point.Timestamp, start, totalTicks);
-            var y = MapY(plot, level, point.Timestamp);
+            var y = MapYContinuous(plot, point.DisplayDb);
-            context.DrawEllipse(GetLevelBrush(level), pen: null, center: new Point(x, y), radiusX: radius, radiusY: radius);
+            var level = ResolveLevel(point.DisplayDb, _baselineDb);
+            sortedPoints.Add((x, y, level));
+        }
+
+        sortedPoints.Sort((a, b) => a.X.CompareTo(b.X));
+
+        for (var layer = cloudLayers - 1; layer >= 0; layer--)
+        {
+            var layerRatio = (double)layer / (cloudLayers - 1);
+            var layerRadius = baseRadius * (1.2 + layerRatio * 0.8);
+            var layerAlpha = (byte)(40 + layerRatio * 25);
+
+            foreach (var pt in sortedPoints)
+            {
+                var brush = GetLevelBrushWithAlpha(pt.Level, layerAlpha);
+                var jitterX = ComputeJitter(pt.X * 1000 + layer) * layerRadius * 0.3;
+                var jitterY = ComputeJitter(pt.Y * 1000 + layer) * layerRadius * 0.3;
+                
+                context.DrawEllipse(
+                    brush,
+                    pen: null,
+                    center: new Point(pt.X + jitterX, pt.Y + jitterY),
+                    radiusX: layerRadius,
+                    radiusY: layerRadius * 0.7);
+            }
+        }
+
+        var glowLayers = 5;
+        for (var layer = glowLayers - 1; layer >= 0; layer--)
+        {
+            var layerRatio = (double)layer / (glowLayers - 1);
+            var layerRadius = baseRadius * (0.8 + layerRatio * 0.6);
+            var layerAlpha = (byte)(20 + layerRatio * 15);
+
+            foreach (var pt in sortedPoints)
+            {
+                var brush = GetLevelBrushWithAlpha(pt.Level, layerAlpha);
+                context.DrawEllipse(
+                    brush,
+                    pen: null,
+                    center: new Point(pt.X, pt.Y),
+                    radiusX: layerRadius,
+                    radiusY: layerRadius * 0.6);
+            }
         }
 
-        // Ensure latest point is always visible.
         var latest = _points[^1];
-        var latestLevel = ResolveLevel(latest.DisplayDb, _baselineDb);
         var latestX = MapX(plot, latest.Timestamp, start, totalTicks);
-        var latestY = MapY(plot, latestLevel, latest.Timestamp);
+        var latestY = MapYContinuous(plot, latest.DisplayDb);
-        context.DrawEllipse(GetLevelBrush(latestLevel), pen: new Pen(Brushes.White, 1), center: new Point(latestX, latestY), radiusX: radius + 0.8, radiusY: radius + 0.8);
+        var latestLevel = ResolveLevel(latest.DisplayDb, _baselineDb);
+
+        for (var i = 3; i >= 0; i--)
+        {
+            var radius = baseRadius * (1.5 + i * 0.8);
+            var alpha = (byte)(30 - i * 6);
+            var glowBrush = GetLevelBrushWithAlpha(latestLevel, alpha);
+            context.DrawEllipse(glowBrush, null, new Point(latestX, latestY), radius, radius * 0.6);
+        }
+
+        context.DrawEllipse(
+            GetLevelBrush(latestLevel),
+            new Pen(Brushes.White, 1.5),
+            new Point(latestX, latestY),
+            baseRadius + 1,
+            baseRadius * 0.7 + 1);
+
+        context.DrawEllipse(
+            Brushes.White,
+            null,
+            new Point(latestX, latestY),
+            2,
+            2);
     }
 
     private static void DrawGrid(DrawingContext context, Rect plot)
@@ -103,34 +171,28 @@ public sealed class StudyNoiseDistributionScatterChartControl : Control
         return plot.Left + plot.Width * (offsetTicks / (double)totalTicks);
     }
 
-    private static double MapY(Rect plot, NoiseDistributionLevel level, DateTimeOffset timestamp)
+    private double MapYContinuous(Rect plot, double displayDb)
     {
-        // 4 bands: quiet(bottom) -> extreme(top). Add deterministic jitter in each band.
+        var minDb = _baselineDb - 5;
-        var bandHeight = plot.Height / 4d;
+        var maxDb = _baselineDb + 25;
-        var levelIndex = level switch
+        var dbRange = maxDb - minDb;
-        {
+        if (dbRange <= 0) dbRange = 30;
-            NoiseDistributionLevel.Quiet => 0,
-            NoiseDistributionLevel.Normal => 1,
-            NoiseDistributionLevel.Noisy => 2,
-            NoiseDistributionLevel.Extreme => 3,
-            _ => 1
-        };
 
-        var centerY = plot.Bottom - ((levelIndex + 0.5) * bandHeight);
+        var normalizedDb = (displayDb - minDb) / dbRange;
-        var jitter = ComputeJitter(timestamp.Ticks) * bandHeight * 0.26;
+        normalizedDb = Math.Clamp(normalizedDb, 0, 1);
-        return Math.Clamp(centerY + jitter, plot.Top + 1.5, plot.Bottom - 1.5);
+
+        return plot.Bottom - (normalizedDb * plot.Height);
     }
 
-    private static double ComputeJitter(long ticks)
+    private static double ComputeJitter(double value)
     {
-        // Deterministic pseudo-random value in [-1, 1] to avoid overlap without animation noise.
+        var hash = (ulong)(value * 1000000);
-        var value = (ulong)ticks;
+        hash ^= hash >> 33;
-        value ^= value >> 33;
+        hash *= 0xff51afd7ed558ccdUL;
-        value *= 0xff51afd7ed558ccdUL;
+        hash ^= hash >> 33;
-        value ^= value >> 33;
+        hash *= 0xc4ceb9fe1a85ec53UL;
-        value *= 0xc4ceb9fe1a85ec53UL;
+        hash ^= hash >> 33;
-        value ^= value >> 33;
+        var normalized = (hash & 0xFFFF) / 65535d;
-        var normalized = (value & 0xFFFF) / 65535d;
         return (normalized * 2d) - 1d;
     }
 
@@ -162,11 +224,23 @@ public sealed class StudyNoiseDistributionScatterChartControl : Control
     {
         return level switch
         {
-            NoiseDistributionLevel.Quiet => QuietPointBrush,
+            NoiseDistributionLevel.Quiet => QuietBrush,
-            NoiseDistributionLevel.Normal => NormalPointBrush,
+            NoiseDistributionLevel.Normal => NormalBrush,
-            NoiseDistributionLevel.Noisy => NoisyPointBrush,
+            NoiseDistributionLevel.Noisy => NoisyBrush,
-            NoiseDistributionLevel.Extreme => ExtremePointBrush,
+            NoiseDistributionLevel.Extreme => ExtremeBrush,
-            _ => NormalPointBrush
+            _ => NormalBrush
+        };
+    }
+
+    private static IBrush GetLevelBrushWithAlpha(NoiseDistributionLevel level, byte alpha)
+    {
+        return level switch
+        {
+            NoiseDistributionLevel.Quiet => new SolidColorBrush(Color.FromArgb(alpha, 0x34, 0xD3, 0x99)),
+            NoiseDistributionLevel.Normal => new SolidColorBrush(Color.FromArgb(alpha, 0x60, 0xA5, 0xFA)),
+            NoiseDistributionLevel.Noisy => new SolidColorBrush(Color.FromArgb(alpha, 0xF5, 0x9E, 0x0B)),
+            NoiseDistributionLevel.Extreme => new SolidColorBrush(Color.FromArgb(alpha, 0xEF, 0x44, 0x44)),
+            _ => new SolidColorBrush(Color.FromArgb(alpha, 0x60, 0xA5, 0xFA))
         };
     }
 }

LanMountainDesktop/Views/Components/StudyNoiseDistributionWidget.axaml.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.Globalization;
 using System.Linq;
@@ -12,7 +12,7 @@ using LanMountainDesktop.Theme;
 
 namespace LanMountainDesktop.Views.Components;
 
-public partial class StudyNoiseDistributionWidget : UserControl, IDesktopComponentWidget, IDesktopPageVisibilityAwareComponentWidget
+public partial class StudyNoiseDistributionWidget : UserControl, IDesktopComponentWidget, IDesktopPageVisibilityAwareComponentWidget, IDisposable
 {
     private static readonly Color[] ValueColorCandidates =
     {
@@ -46,13 +46,14 @@ public partial class StudyNoiseDistributionWidget : UserControl, IDesktopCompone
     private readonly LocalizationService _localizationService = new();
     private readonly DispatcherTimer _uiTimer = new()
     {
-        Interval = TimeSpan.FromMilliseconds(250)
+        Interval = TimeSpan.FromMilliseconds(100)
     };
 
     private double _currentCellSize = 48;
     private string _languageCode = "zh-CN";
     private bool _isAttached;
     private bool _isOnActivePage = true;
+    private bool _isDisposed;
     private bool _isCompactMode;
     private bool _isUltraCompactMode;
     private IDisposable? _monitoringLease;
@@ -92,8 +93,16 @@ public partial class StudyNoiseDistributionWidget : UserControl, IDesktopCompone
     public void SetDesktopPageContext(bool isOnActivePage, bool isEditMode)
     {
         _ = isEditMode;
+        var wasOnActivePage = _isOnActivePage;
         _isOnActivePage = isOnActivePage;
+        
         UpdateMonitoringLeaseState();
+        
+        if (isOnActivePage && !wasOnActivePage)
+        {
+            RefreshVisual();
+        }
+        
         UpdateTimerState();
     }
 
@@ -142,8 +151,7 @@ public partial class StudyNoiseDistributionWidget : UserControl, IDesktopCompone
 
     private void UpdateMonitoringLeaseState()
     {
-        var shouldMonitor = _isAttached && _isOnActivePage;
+        if (_isAttached)
-        if (shouldMonitor)
         {
             _monitoringLease ??= _monitoringLeaseCoordinator.AcquireLease();
             return;
@@ -604,6 +612,25 @@ public partial class StudyNoiseDistributionWidget : UserControl, IDesktopCompone
     {
         return _localizationService.GetString(_languageCode, key, fallback);
     }
+
+    public void Dispose()
+    {
+        if (_isDisposed)
+        {
+            return;
+        }
+
+        _isDisposed = true;
+
+        _uiTimer.Stop();
+        _uiTimer.Tick -= OnUiTimerTick;
+        AttachedToVisualTree -= OnAttachedToVisualTree;
+        DetachedFromVisualTree -= OnDetachedFromVisualTree;
+        SizeChanged -= OnSizeChanged;
+
+        _monitoringLease?.Dispose();
+        _monitoringLease = null;
+    }
 }
 
 

LanMountainDesktop/Views/Components/StudySessionControlWidget.axaml.cs

@@ -11,7 +11,7 @@ using Material.Icons;
 
 namespace LanMountainDesktop.Views.Components;
 
-public partial class StudySessionControlWidget : UserControl, IDesktopComponentWidget, IDesktopPageVisibilityAwareComponentWidget
+public partial class StudySessionControlWidget : UserControl, IDesktopComponentWidget, IDesktopPageVisibilityAwareComponentWidget, IDisposable
 {
     private static readonly Color[] PrimaryColorCandidates =
     {
@@ -61,6 +61,7 @@ public partial class StudySessionControlWidget : UserControl, IDesktopComponentW
     private string _languageCode = "zh-CN";
     private bool _isAttached;
     private bool _isOnActivePage = true;
+    private bool _isDisposed;
     private bool _isCompactMode;
     private bool _isUltraCompactMode;
     private IDisposable? _monitoringLease;
@@ -468,4 +469,20 @@ public partial class StudySessionControlWidget : UserControl, IDesktopComponentW
     {
         return _localizationService.GetString(_languageCode, key, fallback);
     }
+
+    public void Dispose()
+    {
+        if (_isDisposed)
+        {
+            return;
+        }
+
+        _isDisposed = true;
+
+        _uiTimer.Stop();
+        _uiTimer.Tick -= OnUiTimerTick;
+        AttachedToVisualTree -= OnAttachedToVisualTree;
+        DetachedFromVisualTree -= OnDetachedFromVisualTree;
+        SizeChanged -= OnSizeChanged;
+    }
 }

LanMountainDesktop/Views/Components/StudySessionHistoryWidget.axaml.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.Globalization;
 using Avalonia;
@@ -15,7 +15,7 @@ using LanMountainDesktop.Theme;
 
 namespace LanMountainDesktop.Views.Components;
 
-public partial class StudySessionHistoryWidget : UserControl, IDesktopComponentWidget, IDesktopPageVisibilityAwareComponentWidget
+public partial class StudySessionHistoryWidget : UserControl, IDesktopComponentWidget, IDesktopPageVisibilityAwareComponentWidget, IDisposable
 {
     private const double MinTextContrast = 4.5;
     private enum HistoryDialogMode
@@ -55,6 +55,7 @@ public partial class StudySessionHistoryWidget : UserControl, IDesktopComponentW
     private bool _isAttached;
     private bool _isOnActivePage = true;
     private bool _isSubscribed;
+    private bool _isDisposed;
     private bool _isCompactMode;
     private bool _isUltraCompactMode;
     private string? _loadingSessionId;
@@ -733,6 +734,29 @@ public partial class StudySessionHistoryWidget : UserControl, IDesktopComponentW
 
         return min;
     }
+
+    public void Dispose()
+    {
+        if (_isDisposed)
+        {
+            return;
+        }
+
+        _isDisposed = true;
+
+        AttachedToVisualTree -= OnAttachedToVisualTree;
+        DetachedFromVisualTree -= OnDetachedFromVisualTree;
+        SizeChanged -= OnSizeChanged;
+        DialogCancelButton.Click -= (_, _) => CloseDialog();
+        DialogConfirmButton.Click -= (_, _) => ConfirmDialog();
+        DialogRenameTextBox.KeyDown -= OnDialogRenameTextBoxKeyDown;
+
+        if (_isSubscribed)
+        {
+            _studyAnalyticsService.SnapshotUpdated -= OnStudySnapshotUpdated;
+            _isSubscribed = false;
+        }
+    }
 }
 
 

LanMountainDesktop/Views/Components/WeatherClockWidget.axaml.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.Globalization;
 using System.Linq;
@@ -69,6 +69,7 @@ public partial class WeatherClockWidget : UserControl, IDesktopComponentWidget,
         AttachedToVisualTree += OnAttachedToVisualTree;
         DetachedFromVisualTree += OnDetachedFromVisualTree;
         SizeChanged += OnSizeChanged;
+        ActualThemeVariantChanged += OnActualThemeVariantChanged;
 
         InitializeDialIfNeeded();
         InitializeHandsIfNeeded();
@@ -238,6 +239,12 @@ public partial class WeatherClockWidget : UserControl, IDesktopComponentWidget,
         ApplyCellSize(_currentCellSize);
     }
 
+    private void OnActualThemeVariantChanged(object? sender, EventArgs e)
+    {
+        _isNightModeApplied = null;
+        ApplyModeVisualIfNeeded();
+    }
+
     private void OnClockTimerTick(object? sender, EventArgs e)
     {
         UpdateClockVisual();

LanMountainDesktop/Views/Components/WorldClockWidget.axaml.cs

@@ -6,6 +6,7 @@ using Avalonia.Controls;
 using Avalonia.Controls.Shapes;
 using Avalonia.Layout;
 using Avalonia.Media;
+using Avalonia.Styling;
 using Avalonia.Threading;
 using LanMountainDesktop.Services;
 
@@ -81,6 +82,8 @@ public partial class WorldClockWidget : UserControl, IDesktopComponentWidget, IT
         public required TextBlock OffsetTextBlock { get; init; }
 
         public bool? IsNightApplied { get; set; }
+
+        public bool? IsSystemNightApplied { get; set; }
     }
 
     private readonly DispatcherTimer _clockTimer = new()
@@ -99,6 +102,7 @@ public partial class WorldClockWidget : UserControl, IDesktopComponentWidget, IT
     private double _currentCellSize = BaseCellSize;
     private DateTime _nextLanguageProbeUtc = DateTime.MinValue;
     private string _secondHandMode = ClockSecondHandMode.Tick;
+    private bool _isNightVisual = true;
 
     public WorldClockWidget()
     {
@@ -114,6 +118,7 @@ public partial class WorldClockWidget : UserControl, IDesktopComponentWidget, IT
         AttachedToVisualTree += OnAttachedToVisualTree;
         DetachedFromVisualTree += OnDetachedFromVisualTree;
         SizeChanged += OnSizeChanged;
+        ActualThemeVariantChanged += OnActualThemeVariantChanged;
     }
 
     public void SetTimeZoneService(TimeZoneService timeZoneService)
@@ -211,6 +216,79 @@ public partial class WorldClockWidget : UserControl, IDesktopComponentWidget, IT
         ApplyCellSize(_currentCellSize);
     }
 
+    private void OnActualThemeVariantChanged(object? sender, EventArgs e)
+    {
+        _ = sender;
+        _ = e;
+        _isNightVisual = ResolveNightMode();
+        ApplyNightModeVisual();
+    }
+
+    private bool ResolveNightMode()
+    {
+        if (ActualThemeVariant == ThemeVariant.Dark)
+        {
+            return true;
+        }
+
+        if (ActualThemeVariant == ThemeVariant.Light)
+        {
+            return false;
+        }
+
+        if (this.TryFindResource("AdaptiveSurfaceBaseBrush", out var value) &&
+            value is ISolidColorBrush brush)
+        {
+            return CalculateRelativeLuminance(brush.Color) < 0.45;
+        }
+
+        return true;
+    }
+
+    private static double CalculateRelativeLuminance(Color color)
+    {
+        static double ToLinear(double channel)
+        {
+            return channel <= 0.03928
+                ? channel / 12.92
+                : Math.Pow((channel + 0.055) / 1.055, 2.4);
+        }
+
+        var r = ToLinear(color.R / 255d);
+        var g = ToLinear(color.G / 255d);
+        var b = ToLinear(color.B / 255d);
+        return 0.2126 * r + 0.7152 * g + 0.0722 * b;
+    }
+
+    private void ApplyNightModeVisual()
+    {
+        RootBorder.Background = new SolidColorBrush(_isNightVisual ? Color.Parse("#1B2129") : Color.Parse("#F4F5F7"));
+        RootBorder.BorderBrush = new SolidColorBrush(_isNightVisual ? Color.Parse("#33FFFFFF") : Color.Parse("#16000000"));
+
+        foreach (var entry in _entryVisuals)
+        {
+            ApplyTextThemeForSystemNight(entry, _isNightVisual);
+        }
+    }
+
+    private void ApplyTextThemeForSystemNight(ClockEntryVisual entry, bool isSystemNight)
+    {
+        if (entry.IsSystemNightApplied.HasValue && entry.IsSystemNightApplied.Value == isSystemNight)
+        {
+            return;
+        }
+
+        entry.IsSystemNightApplied = isSystemNight;
+
+        var cityForeground = isSystemNight ? "#E8EAED" : "#20232A";
+        var dayForeground = isSystemNight ? "#A8B1C2" : "#646C79";
+        var offsetForeground = isSystemNight ? "#A8B1C2" : "#7A7F89";
+
+        entry.CityTextBlock.Foreground = CreateBrush(cityForeground);
+        entry.DayTextBlock.Foreground = CreateBrush(dayForeground);
+        entry.OffsetTextBlock.Foreground = CreateBrush(offsetForeground);
+    }
+
     private void OnTimeZoneChanged(object? sender, EventArgs e)
     {
         _ = sender;

LanMountainDesktop/Views/MainWindow.ComponentSystem.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using Avalonia;
@@ -681,23 +681,33 @@ public partial class MainWindow
         }
 
         ClearTimeZoneServiceBindings(_selectedDesktopComponentHost);
+        DisposeComponentIfNeeded(_selectedDesktopComponentHost);
 
         if (_desktopPageComponentGrids.TryGetValue(placement.PageIndex, out var pageGrid))
         {
             pageGrid.Children.Remove(_selectedDesktopComponentHost);
         }
 
-        // Remove from persisted placement list as well.
         _desktopComponentPlacements.Remove(placement);
 
         ClearDesktopComponentSelection();
 
         ApplyTaskbarActionVisibility(GetCurrentTaskbarContext());
 
-        // 娣囨繂鐡ㄧ拋鍓х枂
         PersistSettings();
     }
 
+    private static void DisposeComponentIfNeeded(Border host)
+    {
+        if (TryGetContentHost(host) is Border contentHost && contentHost.Child is Control componentControl)
+        {
+            if (componentControl is IDisposable disposableComponent)
+            {
+                disposableComponent.Dispose();
+            }
+        }
+    }
+
     private void OpenComponentSettings()
     {
         if (_selectedDesktopComponentHost is null || _selectedDesktopComponentHost.Tag is not string placementId)
@@ -1389,6 +1399,10 @@ public partial class MainWindow
         if (_desktopPageComponentGrids.TryGetValue(_currentDesktopSurfaceIndex, out var pageGrid))
         {
             ClearTimeZoneServiceBindings(pageGrid.Children.OfType<Control>().ToList());
+            foreach (var child in pageGrid.Children.OfType<Border>())
+            {
+                DisposeComponentIfNeeded(child);
+            }
         }
         
         foreach (var placement in placementsToRemove)

LanMountainDesktop/packaging/linux/install.sh

@@ -11,6 +11,74 @@ ICONS_DIR="${XDG_DATA_HOME:-$HOME/.local/share}/icons/hicolor/256x256/apps"
 DESKTOP_TARGET="$APPLICATIONS_DIR/LanMountainDesktop.desktop"
 ICON_TARGET="$ICONS_DIR/lanmountaindesktop.png"
 
+check_audio_dependencies() {
+    MISSING_DEPS=""
+
+    if command -v dpkg >/dev/null 2>&1; then
+        if ! dpkg -s libportaudio2 >/dev/null 2>&1; then
+            MISSING_DEPS="$MISSING_DEPS libportaudio2"
+        fi
+        if ! dpkg -s libasound2 >/dev/null 2>&1; then
+            MISSING_DEPS="$MISSING_DEPS libasound2"
+        fi
+    elif command -v rpm >/dev/null 2>&1; then
+        if ! rpm -q portaudio-libs >/dev/null 2>&1; then
+            MISSING_DEPS="$MISSING_DEPS portaudio-libs"
+        fi
+        if ! rpm -q alsa-lib >/dev/null 2>&1; then
+            MISSING_DEPS="$MISSING_DEPS alsa-lib"
+        fi
+    elif command -v pacman >/dev/null 2>&1; then
+        if ! pacman -Q portaudio >/dev/null 2>&1; then
+            MISSING_DEPS="$MISSING_DEPS portaudio"
+        fi
+        if ! pacman -Q alsa-lib >/dev/null 2>&1; then
+            MISSING_DEPS="$MISSING_DEPS alsa-lib"
+        fi
+    elif command -v apk >/dev/null 2>&1; then
+        if ! apk -e info portaudio >/dev/null 2>&1; then
+            MISSING_DEPS="$MISSING_DEPS portaudio"
+        fi
+        if ! apk -e info alsa-lib >/dev/null 2>&1; then
+            MISSING_DEPS="$MISSING_DEPS alsa-lib"
+        fi
+    fi
+
+    if [ -n "$MISSING_DEPS" ]; then
+        return 1
+    fi
+    return 0
+}
+
+install_audio_dependencies() {
+    if command -v apt-get >/dev/null 2>&1; then
+        sudo apt-get update
+        sudo apt-get install -y libportaudio2 libasound2
+    elif command -v dnf >/dev/null 2>&1; then
+        sudo dnf install -y portaudio-libs alsa-lib
+    elif command -v yum >/dev/null 2>&1; then
+        sudo yum install -y portaudio-libs alsa-lib
+    elif command -v pacman >/dev/null 2>&1; then
+        sudo pacman -S --noconfirm portaudio alsa-lib
+    elif command -v apk >/dev/null 2>&1; then
+        sudo apk add portaudio alsa-lib
+    else
+        printf '%s\n' "Warning: Could not detect package manager. Please install audio dependencies manually:"
+        printf '%s\n' "  - libportaudio2 (or portaudio-libs/portaudio)"
+        printf '%s\n' "  - libasound2 (or alsa-lib)"
+    fi
+}
+
+if ! check_audio_dependencies; then
+    printf '%s\n' "Installing audio dependencies for recording features..."
+    install_audio_dependencies
+
+    if ! check_audio_dependencies; then
+        printf '%s\n' "Warning: Audio dependencies may not be installed correctly."
+        printf '%s\n' "Recording and study monitoring features may not work properly."
+    fi
+fi
+
 mkdir -p "$APPLICATIONS_DIR" "$ICONS_DIR"
 
 cp "$ICON_SOURCE" "$ICON_TARGET"

run.md

@@ -26,3 +26,29 @@ dotnet run --project LanMountainDesktop/LanMountainDesktop.csproj
 - 启动失败提示 SDK 版本不匹配：确认 `dotnet --info` 中已安装 .NET 10 SDK。
 - 桌面端视频相关能力异常：优先在 Windows 环境下验证。
 - 配置重置：删除 `%LOCALAPPDATA%\LanMountainDesktop\settings.json` 后重启应用。
+
+## 6. Linux 音频功能依赖
+
+如果在 Linux 上使用录音机组件或自习监测组件，需要安装以下音频库：
+
+### Debian/Ubuntu
+```bash
+sudo apt install libportaudio2 libasound2
+```
+
+### Fedora/RHEL
+```bash
+sudo dnf install portaudio-libs alsa-lib
+```
+
+### Arch Linux
+```bash
+sudo pacman -S portaudio alsa-lib
+```
+
+### Alpine Linux
+```bash
+sudo apk add portaudio alsa-lib
+```
+
+> 注：如果未安装这些依赖，录音和自习监测功能将不可用，但应用其他功能可以正常运行。