0.1.6

mica

LanMontainDesktop/LanMontainDesktop.csproj

@@ -11,6 +11,7 @@
   <ItemGroup>
     <Folder Include="Models\" />
     <AvaloniaResource Include="Assets\**" />
+    <None Include="Localization\*.json" CopyToOutputDirectory="PreserveNewest" />
   </ItemGroup>
 
   <ItemGroup>

LanMontainDesktop/Localization/en-US.json

@@ -0,0 +1,84 @@
+{
+  "app.title": "LanMontainDesktop",
+  "button.back_to_windows": "Back to Windows",
+  "tooltip.back_to_windows": "Back to Windows",
+  "tooltip.open_settings": "Settings",
+  "settings.title": "Settings",
+  "settings.back_to_desktop": "Back to Desktop",
+  "settings.nav_header": "Settings",
+  "settings.nav.wallpaper": "Wallpaper",
+  "settings.nav.grid": "Grid",
+  "settings.nav.color": "Color",
+  "settings.nav.status_bar": "Status Bar",
+  "settings.nav.region": "Region",
+  "settings.wallpaper.title": "Wallpaper",
+  "settings.wallpaper.description": "Pick an image or video to apply as the app window wallpaper immediately.",
+  "settings.wallpaper.current_label": "Current Wallpaper",
+  "settings.wallpaper.placement_label": "Placement",
+  "settings.wallpaper.pick_button": "Browse Files",
+  "settings.wallpaper.clear_button": "Reset to Solid Color",
+  "settings.wallpaper.no_selection": "No wallpaper selected.",
+  "settings.wallpaper.storage_unavailable": "Storage provider is unavailable.",
+  "settings.wallpaper.import_failed": "Failed to import wallpaper file.",
+  "settings.wallpaper.image_applied": "Image wallpaper applied.",
+  "settings.wallpaper.video_applied": "Video wallpaper applied.",
+  "settings.wallpaper.unsupported_file": "Selected file type is not supported.",
+  "settings.wallpaper.apply_failed_format": "Failed to apply wallpaper: {0}",
+  "settings.wallpaper.mode_format": "Wallpaper mode: {0}.",
+  "settings.wallpaper.video_mode": "Video wallpaper uses automatic fill mode.",
+  "settings.wallpaper.cleared": "Background reset to solid color.",
+  "settings.wallpaper.default_status": "Current background uses solid color.",
+  "settings.wallpaper.saved_not_found": "Saved wallpaper file was not found. Using solid color background.",
+  "settings.wallpaper.restored": "Wallpaper restored from saved settings.",
+  "settings.wallpaper.video_restored": "Video wallpaper restored from saved settings.",
+  "settings.wallpaper.restore_failed": "Failed to restore saved wallpaper. Using solid color background.",
+  "settings.wallpaper.video_not_found": "Video wallpaper file not found.",
+  "settings.wallpaper.video_player_unavailable": "Video player is unavailable.",
+  "settings.wallpaper.video_play_failed_format": "Failed to play video wallpaper: {0}",
+  "settings.grid.title": "Grid Layout",
+  "settings.grid.description": "Every component must occupy at least one cell (minimum 1x1).",
+  "settings.grid.short_side_label": "Short Side Cells",
+  "settings.grid.apply_button": "Apply",
+  "settings.grid.info_format": "Grid: {0} cols x {1} rows | cell {2:F1}px (1:1)",
+  "settings.color.title": "Color",
+  "settings.color.description": "Switch day/night mode and choose app accent colors.",
+  "settings.color.day_night_label": "Day/Night Mode",
+  "settings.color.day_night_on": "Night",
+  "settings.color.day_night_off": "Day",
+  "settings.color.recommended_label": "Recommended Colors",
+  "settings.color.system_monet_label": "System Monet Colors",
+  "settings.color.refresh_button": "Refresh",
+  "settings.color.mode_night": "Night mode enabled",
+  "settings.color.mode_day": "Day mode enabled",
+  "settings.color.mode_status_format": "Theme mode: {0}.",
+  "settings.color.monet_refreshed": "Monet colors refreshed.",
+  "settings.color.theme_ready_format": "Theme color ready: {0}.",
+  "settings.color.theme_applied_format": "{0} color applied: {1}.",
+  "settings.color.theme_updated_wallpaper": "Wallpaper updated. Monet colors refreshed.",
+  "settings.color.theme_updated_video": "Video wallpaper updated. Theme colors refreshed.",
+  "settings.color.theme_cleared_wallpaper": "Wallpaper cleared. Monet colors refreshed.",
+  "settings.status_bar.title": "Status Bar",
+  "settings.status_bar.description": "Choose which components appear on the top status bar.",
+  "settings.status_bar.clock_header": "Clock Component",
+  "settings.status_bar.clock_description": "Display a clock on the top status bar.",
+  "settings.region.title": "Region",
+  "settings.region.description": "Choose language and apply immediately to settings and key UI.",
+  "settings.region.language_header": "Language",
+  "settings.region.language_label": "Language",
+  "settings.region.language_zh": "Chinese",
+  "settings.region.language_en": "English",
+  "settings.region.applied_format": "Language switched to: {0}",
+  "settings.footer": "LanMontainDesktop Settings",
+  "filepicker.title": "Select wallpaper",
+  "filepicker.image_files": "Image files",
+  "filepicker.video_files": "Video files",
+  "common.day": "Day",
+  "common.night": "Night",
+  "common.recommended": "Recommended",
+  "common.monet": "Monet",
+  "placement.fill": "Fill",
+  "placement.fit": "Fit",
+  "placement.stretch": "Stretch",
+  "placement.center": "Center",
+  "placement.tile": "Tile"
+}

LanMontainDesktop/Localization/zh-CN.json

@@ -0,0 +1,84 @@
+{
+  "app.title": "LanMontainDesktop",
+  "button.back_to_windows": "回到Windows",
+  "tooltip.back_to_windows": "回到Windows",
+  "tooltip.open_settings": "设置",
+  "settings.title": "设置",
+  "settings.back_to_desktop": "返回桌面",
+  "settings.nav_header": "设置选项",
+  "settings.nav.wallpaper": "壁纸",
+  "settings.nav.grid": "网格",
+  "settings.nav.color": "颜色",
+  "settings.nav.status_bar": "状态栏",
+  "settings.nav.region": "地区",
+  "settings.wallpaper.title": "壁纸",
+  "settings.wallpaper.description": "选择图片或视频后可立刻设为应用窗口壁纸。",
+  "settings.wallpaper.current_label": "当前壁纸",
+  "settings.wallpaper.placement_label": "显示方式",
+  "settings.wallpaper.pick_button": "浏览文件",
+  "settings.wallpaper.clear_button": "恢复纯色",
+  "settings.wallpaper.no_selection": "未选择壁纸。",
+  "settings.wallpaper.storage_unavailable": "存储提供器不可用。",
+  "settings.wallpaper.import_failed": "导入壁纸文件失败。",
+  "settings.wallpaper.image_applied": "图片壁纸已应用。",
+  "settings.wallpaper.video_applied": "视频壁纸已应用。",
+  "settings.wallpaper.unsupported_file": "所选文件类型不受支持。",
+  "settings.wallpaper.apply_failed_format": "应用壁纸失败：{0}",
+  "settings.wallpaper.mode_format": "壁纸模式：{0}。",
+  "settings.wallpaper.video_mode": "视频壁纸使用自动填充模式。",
+  "settings.wallpaper.cleared": "背景已恢复为纯色。",
+  "settings.wallpaper.default_status": "当前使用纯色背景。",
+  "settings.wallpaper.saved_not_found": "未找到已保存的壁纸文件，使用纯色背景。",
+  "settings.wallpaper.restored": "已恢复保存的壁纸。",
+  "settings.wallpaper.video_restored": "已恢复保存的视频壁纸。",
+  "settings.wallpaper.restore_failed": "恢复已保存壁纸失败，使用纯色背景。",
+  "settings.wallpaper.video_not_found": "未找到视频壁纸文件。",
+  "settings.wallpaper.video_player_unavailable": "视频播放器不可用。",
+  "settings.wallpaper.video_play_failed_format": "播放视频壁纸失败：{0}",
+  "settings.grid.title": "网格布局",
+  "settings.grid.description": "每个组件至少占用一个格子（最小 1x1）。",
+  "settings.grid.short_side_label": "短边格数",
+  "settings.grid.apply_button": "应用",
+  "settings.grid.info_format": "网格：{0} 列 x {1} 行 | 单元格 {2:F1}px（1:1）",
+  "settings.color.title": "颜色",
+  "settings.color.description": "切换日夜模式并选择应用主题色。",
+  "settings.color.day_night_label": "日夜模式",
+  "settings.color.day_night_on": "夜间",
+  "settings.color.day_night_off": "日间",
+  "settings.color.recommended_label": "推荐色",
+  "settings.color.system_monet_label": "系统莫奈色",
+  "settings.color.refresh_button": "刷新",
+  "settings.color.mode_night": "夜间模式已启用",
+  "settings.color.mode_day": "日间模式已启用",
+  "settings.color.mode_status_format": "主题模式：{0}。",
+  "settings.color.monet_refreshed": "莫奈色已刷新。",
+  "settings.color.theme_ready_format": "主题色已就绪：{0}。",
+  "settings.color.theme_applied_format": "{0}主题色已应用：{1}。",
+  "settings.color.theme_updated_wallpaper": "壁纸更新，莫奈色已刷新。",
+  "settings.color.theme_updated_video": "视频壁纸更新，主题色已刷新。",
+  "settings.color.theme_cleared_wallpaper": "壁纸已清除，莫奈色已刷新。",
+  "settings.status_bar.title": "状态栏",
+  "settings.status_bar.description": "选择顶部状态栏显示的组件。",
+  "settings.status_bar.clock_header": "时间组件",
+  "settings.status_bar.clock_description": "在顶部状态栏显示时钟。",
+  "settings.region.title": "地区",
+  "settings.region.description": "选择语言并立即应用到设置与主要界面。",
+  "settings.region.language_header": "语言",
+  "settings.region.language_label": "语言",
+  "settings.region.language_zh": "中文",
+  "settings.region.language_en": "英文",
+  "settings.region.applied_format": "语言已切换为：{0}",
+  "settings.footer": "LanMontainDesktop 设置",
+  "filepicker.title": "选择壁纸",
+  "filepicker.image_files": "图片文件",
+  "filepicker.video_files": "视频文件",
+  "common.day": "日间",
+  "common.night": "夜间",
+  "common.recommended": "推荐",
+  "common.monet": "莫奈",
+  "placement.fill": "填充",
+  "placement.fit": "适应",
+  "placement.stretch": "拉伸",
+  "placement.center": "居中",
+  "placement.tile": "平铺"
+}

LanMontainDesktop/Models/AppSettingsSnapshot.cs

@@ -16,6 +16,8 @@ public sealed class AppSettingsSnapshot
 
     public int SettingsTabIndex { get; set; } = 0;
 
+    public string LanguageCode { get; set; } = "zh-CN";
+
     public List<string> TopStatusComponentIds { get; set; } = [];
 
     public List<string> PinnedTaskbarActions { get; set; } =

LanMontainDesktop/Models/TaskbarContext.cs

@@ -6,5 +6,6 @@ public enum TaskbarContext
     SettingsWallpaper,
     SettingsGrid,
     SettingsColor,
-    SettingsStatusBar
+    SettingsStatusBar,
+    SettingsRegion
 }

LanMontainDesktop/Services/GlassEffectService.cs

@@ -15,36 +15,54 @@ public static class GlassEffectService
 
     public static void ApplyGlassResources(IResourceDictionary resources, ThemeColorContext context)
     {
-        var neutralBase = context.IsNightMode ? Color.Parse("#FF0B1220") : Color.Parse("#FFF8FAFC");
+        // Mica 材质：不透明，但混合壁纸颜色
-        var neutralElevated = context.IsNightMode ? Color.Parse("#FF1E293B") : Color.Parse("#FFFFFFFF");
+        // 提取壁纸颜色的透明度（0-1），用于控制 Mica 效果强度
-        var tintMix = context.IsNightMode ? 0.15 : 0.08;
+        var wallpaperTintOpacity = 0.15; // 壁纸颜色混合比例
-        var panelTone = ColorMath.Blend(neutralElevated, context.AccentColor, tintMix);
+        
-        var strongTone = ColorMath.Blend(neutralBase, context.AccentColor, context.IsNightMode ? 0.18 : 0.12);
+        var neutralBase = context.IsNightMode ? Color.Parse("#FF202020") : Color.Parse("#FFF3F3F3");
-        var overlayTone = ColorMath.Blend(neutralBase, context.AccentColor, context.IsNightMode ? 0.25 : 0.15);
+        var neutralElevated = context.IsNightMode ? Color.Parse("#FF2C2C2C") : Color.Parse("#FFFAFAFA");
-
+        
-        resources["AdaptiveButtonBackgroundBrush"] = new SolidColorBrush(
+        // Mica 效果：将壁纸颜色混合到中性基色中
-            ColorMath.WithAlpha(panelTone, context.IsNightMode ? (byte)0x66 : (byte)0x80));
+        var micaBackground = ColorMath.Blend(neutralBase, context.AccentColor, wallpaperTintOpacity);
-        resources["AdaptiveButtonBorderBrush"] = new SolidColorBrush(ColorMath.WithAlpha(neutralElevated, 0x1A));
+        var micaElevated = ColorMath.Blend(neutralElevated, context.AccentColor, wallpaperTintOpacity * 0.8);
+        
+        // 按钮颜色
+        var buttonBackground = context.IsNightMode ? 
+            Color.FromArgb(0x33, micaBackground.R, micaBackground.G, micaBackground.B) :
+            Color.FromArgb(0x4D, micaBackground.R, micaBackground.G, micaBackground.B);
+            
+        resources["AdaptiveButtonBackgroundBrush"] = new SolidColorBrush(buttonBackground);
+        resources["AdaptiveButtonBorderBrush"] = new SolidColorBrush(
+            Color.FromArgb(0x1A, neutralElevated.R, neutralElevated.G, neutralElevated.B));
         resources["AdaptiveButtonHoverBackgroundBrush"] = new SolidColorBrush(
-            ColorMath.WithAlpha(ColorMath.Blend(panelTone, context.AccentColor, 0.15), context.IsNightMode ? (byte)0x7A : (byte)0x99));
+            ColorMath.WithAlpha(buttonBackground, context.IsNightMode ? (byte)0x4D : (byte)0x66));
         resources["AdaptiveButtonPressedBackgroundBrush"] = new SolidColorBrush(
-            ColorMath.WithAlpha(ColorMath.Blend(panelTone, context.AccentColor, 0.28), context.IsNightMode ? (byte)0x8C : (byte)0xB3));
+            ColorMath.WithAlpha(buttonBackground, context.IsNightMode ? (byte)0x66 : (byte)0x80));
 
+        // 面板颜色 - 使用 Mica 材质
         resources["AdaptiveGlassPanelBackgroundBrush"] = new SolidColorBrush(
-            ColorMath.WithAlpha(panelTone, context.IsNightMode ? (byte)0x4D : (byte)0x66));
+            Color.FromArgb(context.IsNightMode ? (byte)0xE6 : (byte)0xF2, 
-        resources["AdaptiveGlassPanelBorderBrush"] = new SolidColorBrush(ColorMath.WithAlpha(neutralElevated, 0x26));
+                          micaBackground.R, micaBackground.G, micaBackground.B));
+        resources["AdaptiveGlassPanelBorderBrush"] = new SolidColorBrush(
+            Color.FromArgb(0x1F, neutralElevated.R, neutralElevated.G, neutralElevated.B));
         resources["AdaptiveGlassStrongBackgroundBrush"] = new SolidColorBrush(
-            ColorMath.WithAlpha(strongTone, context.IsNightMode ? (byte)0x66 : (byte)0x80));
+            Color.FromArgb(context.IsNightMode ? (byte)0xE6 : (byte)0xF5, 
-        resources["AdaptiveGlassStrongBorderBrush"] = new SolidColorBrush(ColorMath.WithAlpha(neutralElevated, 0x33));
+                          micaElevated.R, micaElevated.G, micaElevated.B));
+        resources["AdaptiveGlassStrongBorderBrush"] = new SolidColorBrush(
+            Color.FromArgb(0x29, neutralElevated.R, neutralElevated.G, neutralElevated.B));
         resources["AdaptiveGlassOverlayBackgroundBrush"] = new SolidColorBrush(
-            ColorMath.WithAlpha(overlayTone, context.IsNightMode ? (byte)0x59 : (byte)0x73));
+            Color.FromArgb(context.IsNightMode ? (byte)0xCC : (byte)0xE6, 
+                          micaBackground.R, micaBackground.G, micaBackground.B));
 
-        resources["AdaptiveGlassPanelBlurRadius"] = context.IsNightMode ? NightPanelBlurRadius : DayPanelBlurRadius;
+        // 模糊半径（Mica 不需要强模糊）
-        resources["AdaptiveGlassStrongBlurRadius"] = context.IsNightMode ? NightStrongBlurRadius : DayStrongBlurRadius;
+        resources["AdaptiveGlassPanelBlurRadius"] = context.IsNightMode ? 20.0 : 30.0;
-        resources["AdaptiveGlassOverlayBlurRadius"] = context.IsNightMode ? NightOverlayBlurRadius : DayOverlayBlurRadius;
+        resources["AdaptiveGlassStrongBlurRadius"] = context.IsNightMode ? 25.0 : 35.0;
-        resources["AdaptiveGlassPanelOpacity"] = context.IsNightMode ? 0.85 : 0.80;
+        resources["AdaptiveGlassOverlayBlurRadius"] = context.IsNightMode ? 30.0 : 40.0;
-        resources["AdaptiveGlassStrongOpacity"] = context.IsNightMode ? 0.90 : 0.85;
+        
-        resources["AdaptiveGlassOverlayOpacity"] = context.IsNightMode ? 0.75 : 0.70;
+        // 不透明度（Mica 材质接近不透明）
-        resources["AdaptiveGlassNoiseOpacity"] = context.IsNightMode ? 0.03 : 0.02;
+        resources["AdaptiveGlassPanelOpacity"] = context.IsNightMode ? 0.95 : 0.98;
+        resources["AdaptiveGlassStrongOpacity"] = context.IsNightMode ? 0.97 : 0.99;
+        resources["AdaptiveGlassOverlayOpacity"] = context.IsNightMode ? 0.85 : 0.92;
+        resources["AdaptiveGlassNoiseOpacity"] = context.IsNightMode ? 0.01 : 0.008;
     }
 }

LanMontainDesktop/Services/LocalizationService.cs

@@ -0,0 +1,65 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Text.Json;
+
+namespace LanMontainDesktop.Services;
+
+public sealed class LocalizationService
+{
+    private static readonly JsonSerializerOptions JsonOptions = new()
+    {
+        ReadCommentHandling = JsonCommentHandling.Skip,
+        AllowTrailingCommas = true
+    };
+
+    private readonly Dictionary<string, Dictionary<string, string>> _cache =
+        new(StringComparer.OrdinalIgnoreCase);
+
+    public string NormalizeLanguageCode(string? languageCode)
+    {
+        return string.Equals(languageCode, "en-US", StringComparison.OrdinalIgnoreCase)
+            ? "en-US"
+            : "zh-CN";
+    }
+
+    public string GetString(string languageCode, string key, string fallback)
+    {
+        var normalizedLanguage = NormalizeLanguageCode(languageCode);
+        var table = LoadLanguageTable(normalizedLanguage);
+        return table.TryGetValue(key, out var value) && !string.IsNullOrWhiteSpace(value)
+            ? value
+            : fallback;
+    }
+
+    private Dictionary<string, string> LoadLanguageTable(string languageCode)
+    {
+        if (_cache.TryGetValue(languageCode, out var table))
+        {
+            return table;
+        }
+
+        var result = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase);
+        try
+        {
+            var filePath = Path.Combine(AppContext.BaseDirectory, "Localization", $"{languageCode}.json");
+            if (File.Exists(filePath))
+            {
+                var json = File.ReadAllText(filePath);
+                var data = JsonSerializer.Deserialize<Dictionary<string, string>>(json, JsonOptions);
+                if (data is not null)
+                {
+                    result = new Dictionary<string, string>(data, StringComparer.OrdinalIgnoreCase);
+                }
+            }
+        }
+        catch
+        {
+            // Keep empty table for resilience.
+        }
+
+        _cache[languageCode] = result;
+        return result;
+    }
+}
+

LanMontainDesktop/Styles/GlassModule.axaml

@@ -10,24 +10,27 @@
         <Setter Property="Background" Value="{DynamicResource AdaptiveButtonBackgroundBrush}" />
         <Setter Property="BorderThickness" Value="1" />
         <Setter Property="BorderBrush" Value="{DynamicResource AdaptiveButtonBorderBrush}" />
-        <Setter Property="CornerRadius" Value="10" />
+        <Setter Property="CornerRadius" Value="6" />
         <Setter Property="Foreground" Value="{DynamicResource AdaptiveTextPrimaryBrush}" />
+        <Setter Property="FontSize" Value="14" />
+        <Setter Property="Padding" Value="16,10" />
         <Setter Property="Transitions">
             <Transitions>
-                <TransformOperationsTransition Property="RenderTransform" Duration="0:0:0.15" />
+                <TransformOperationsTransition Property="RenderTransform" Duration="0:0:0.12" />
-                <DoubleTransition Property="Opacity" Duration="0:0:0.15" />
+                <DoubleTransition Property="Opacity" Duration="0:0:0.12" />
+                <BrushTransition Property="Background" Duration="0:0:0.12" />
             </Transitions>
         </Setter>
     </Style>
 
     <Style Selector="Button:pointerover">
         <Setter Property="Background" Value="{DynamicResource AdaptiveButtonHoverBackgroundBrush}" />
-        <Setter Property="RenderTransform" Value="scale(1.02)" />
+        <Setter Property="RenderTransform" Value="scale(1.015)" />
     </Style>
 
     <Style Selector="Button:pressed">
         <Setter Property="Background" Value="{DynamicResource AdaptiveButtonPressedBackgroundBrush}" />
-        <Setter Property="RenderTransform" Value="scale(0.98)" />
+        <Setter Property="RenderTransform" Value="scale(0.985)" />
     </Style>
 
     <Style Selector="ComboBox">
@@ -68,18 +71,18 @@
         <Setter Property="Background" Value="{DynamicResource AdaptiveGlassPanelBackgroundBrush}" />
         <Setter Property="BorderBrush" Value="{DynamicResource AdaptiveGlassPanelBorderBrush}" />
         <Setter Property="BorderThickness" Value="1" />
-        <Setter Property="CornerRadius" Value="12" />
+        <Setter Property="CornerRadius" Value="8" />
         <Setter Property="Opacity" Value="{DynamicResource AdaptiveGlassPanelOpacity}" />
-        <Setter Property="BoxShadow" Value="0 4 20 #1A000000, 0 8 40 #0D000000" />
+        <Setter Property="BoxShadow" Value="0 1 2 #1A000000" />
     </Style>
 
     <Style Selector="Border.glass-strong">
         <Setter Property="Background" Value="{DynamicResource AdaptiveGlassStrongBackgroundBrush}" />
         <Setter Property="BorderBrush" Value="{DynamicResource AdaptiveGlassStrongBorderBrush}" />
         <Setter Property="BorderThickness" Value="1" />
-        <Setter Property="CornerRadius" Value="16" />
+        <Setter Property="CornerRadius" Value="12" />
         <Setter Property="Opacity" Value="{DynamicResource AdaptiveGlassStrongOpacity}" />
-        <Setter Property="BoxShadow" Value="0 8 30 #26000000, 0 16 60 #14000000" />
+        <Setter Property="BoxShadow" Value="0 2 4 #26000000" />
     </Style>
 
     <Style Selector="Border.glass-overlay">

LanMontainDesktop/Views/MainWindow.Localization.cs

@@ -0,0 +1,143 @@
+using System;
+using Avalonia.Controls;
+using Avalonia.Interactivity;
+
+namespace LanMontainDesktop.Views;
+
+public partial class MainWindow
+{
+    private void InitializeLocalization(string? languageCode)
+    {
+        _languageCode = _localizationService.NormalizeLanguageCode(languageCode);
+
+        if (LanguageComboBox is null)
+        {
+            return;
+        }
+
+        _suppressLanguageSelectionEvents = true;
+        LanguageComboBox.SelectedIndex = string.Equals(_languageCode, "en-US", StringComparison.OrdinalIgnoreCase) ? 1 : 0;
+        _suppressLanguageSelectionEvents = false;
+    }
+
+    private string L(string key, string fallback)
+    {
+        return _localizationService.GetString(_languageCode, key, fallback);
+    }
+
+    private string Lf(string key, string fallback, params object[] args)
+    {
+        var template = L(key, fallback);
+        return string.Format(template, args);
+    }
+
+    private string GetLanguageDisplayName(string languageCode)
+    {
+        return string.Equals(languageCode, "en-US", StringComparison.OrdinalIgnoreCase)
+            ? L("settings.region.language_en", "English")
+            : L("settings.region.language_zh", "中文");
+    }
+
+    private string GetLocalizedPlacementDisplayName(WallpaperPlacement placement)
+    {
+        return placement switch
+        {
+            WallpaperPlacement.Fill => L("placement.fill", "Fill"),
+            WallpaperPlacement.Fit => L("placement.fit", "Fit"),
+            WallpaperPlacement.Stretch => L("placement.stretch", "Stretch"),
+            WallpaperPlacement.Center => L("placement.center", "Center"),
+            WallpaperPlacement.Tile => L("placement.tile", "Tile"),
+            _ => L("placement.fill", "Fill")
+        };
+    }
+
+    private void ApplyLocalization()
+    {
+        Title = L("app.title", "LanMontainDesktop");
+
+        BackToWindowsTextBlock.Text = L("button.back_to_windows", "Back to Windows");
+        WallpaperPreviewBackButtonTextBlock.Text = L("button.back_to_windows", "Back to Windows");
+        ToolTip.SetTip(BackToWindowsButton, L("tooltip.back_to_windows", "Back to Windows"));
+
+        SettingsTitleTextBlock.Text = L("settings.title", "Settings");
+        SettingsNavHeaderTextBlock.Text = L("settings.nav_header", "Settings");
+        SettingsNavWallpaperItem.Content = L("settings.nav.wallpaper", "Wallpaper");
+        SettingsNavGridItem.Content = L("settings.nav.grid", "Grid");
+        SettingsNavColorItem.Content = L("settings.nav.color", "Color");
+        SettingsNavStatusBarItem.Content = L("settings.nav.status_bar", "Status Bar");
+        SettingsNavRegionItem.Content = L("settings.nav.region", "Region");
+
+        WallpaperPanelTitleTextBlock.Text = L("settings.wallpaper.title", "Wallpaper");
+        WallpaperPanelDescriptionTextBlock.Text = L("settings.wallpaper.description", "Pick wallpaper.");
+        WallpaperCurrentLabelTextBlock.Text = L("settings.wallpaper.current_label", "Current Wallpaper");
+        WallpaperPlacementLabelTextBlock.Text = L("settings.wallpaper.placement_label", "Placement");
+        PickWallpaperButton.Content = L("settings.wallpaper.pick_button", "Browse Files");
+        ClearWallpaperButton.Content = L("settings.wallpaper.clear_button", "Reset");
+
+        GridPanelTitleTextBlock.Text = L("settings.grid.title", "Grid Layout");
+        GridPanelDescriptionTextBlock.Text = L("settings.grid.description", "Each component should occupy at least 1x1.");
+        GridShortSideLabelTextBlock.Text = L("settings.grid.short_side_label", "Short Side Cells");
+        ApplyGridButton.Content = L("settings.grid.apply_button", "Apply");
+
+        ColorPanelTitleTextBlock.Text = L("settings.color.title", "Color");
+        ColorPanelDescriptionTextBlock.Text = L("settings.color.description", "Theme and accent settings.");
+        DayNightModeLabelTextBlock.Text = L("settings.color.day_night_label", "Day/Night");
+        NightModeToggleSwitch.OnContent = L("settings.color.day_night_on", "Night");
+        NightModeToggleSwitch.OffContent = L("settings.color.day_night_off", "Day");
+        RecommendedColorsLabelTextBlock.Text = L("settings.color.recommended_label", "Recommended Colors");
+        SystemMonetColorsLabelTextBlock.Text = L("settings.color.system_monet_label", "System Monet Colors");
+        RefreshMonetColorsButton.Content = L("settings.color.refresh_button", "Refresh");
+
+        StatusBarPanelTitleTextBlock.Text = L("settings.status_bar.title", "Status Bar");
+        StatusBarPanelDescriptionTextBlock.Text = L("settings.status_bar.description", "Status bar components.");
+        StatusBarClockSettingsExpander.Header = L("settings.status_bar.clock_header", "Clock");
+        StatusBarClockDescriptionTextBlock.Text = L("settings.status_bar.clock_description", "Display clock in top status bar.");
+
+        RegionPanelTitleTextBlock.Text = L("settings.region.title", "Region");
+        RegionPanelDescriptionTextBlock.Text = L("settings.region.description", "Select language.");
+        LanguageSettingsExpander.Header = L("settings.region.language_header", "Language");
+        LanguageLabelTextBlock.Text = L("settings.region.language_label", "Language");
+        LanguageChineseItem.Content = L("settings.region.language_zh", "中文");
+        LanguageEnglishItem.Content = L("settings.region.language_en", "English");
+
+        if (WallpaperPlacementComboBox?.ItemCount >= 5)
+        {
+            if (WallpaperPlacementComboBox.Items[0] is ComboBoxItem fillItem) fillItem.Content = L("placement.fill", "Fill");
+            if (WallpaperPlacementComboBox.Items[1] is ComboBoxItem fitItem) fitItem.Content = L("placement.fit", "Fit");
+            if (WallpaperPlacementComboBox.Items[2] is ComboBoxItem stretchItem) stretchItem.Content = L("placement.stretch", "Stretch");
+            if (WallpaperPlacementComboBox.Items[3] is ComboBoxItem centerItem) centerItem.Content = L("placement.center", "Center");
+            if (WallpaperPlacementComboBox.Items[4] is ComboBoxItem tileItem) tileItem.Content = L("placement.tile", "Tile");
+        }
+
+        ThemeModeStatusTextBlock.Text = _isNightMode
+            ? L("settings.color.mode_night", "Night mode enabled")
+            : L("settings.color.mode_day", "Day mode enabled");
+
+        GridInfoTextBlock.Text = Lf(
+            "settings.grid.info_format",
+            "Grid: {0} cols x {1} rows | cell {2:F1}px (1:1)",
+            DesktopGrid.ColumnDefinitions.Count,
+            DesktopGrid.RowDefinitions.Count,
+            DesktopGrid.RowDefinitions.Count > 0 ? DesktopGrid.RowDefinitions[0].Height.Value : 0d);
+
+        UpdateOpenSettingsActionVisualState();
+        UpdateWallpaperDisplay();
+    }
+
+    private void OnLanguageSelectionChanged(object? sender, SelectionChangedEventArgs e)
+    {
+        if (_suppressLanguageSelectionEvents || LanguageComboBox?.SelectedItem is not ComboBoxItem item)
+        {
+            return;
+        }
+
+        var selectedLanguage = item.Tag as string;
+        _languageCode = _localizationService.NormalizeLanguageCode(selectedLanguage);
+        ApplyLocalization();
+        ThemeColorStatusTextBlock.Text = Lf(
+            "settings.region.applied_format",
+            "Language switched to: {0}",
+            GetLanguageDisplayName(_languageCode));
+        PersistSettings();
+    }
+}

LanMontainDesktop/Views/MainWindow.Settings.cs

@@ -24,6 +24,12 @@ public partial class MainWindow
 {
     private void OnOpenSettingsClick(object? sender, RoutedEventArgs e)
     {
+        if (_isSettingsOpen)
+        {
+            CloseSettingsPage();
+            return;
+        }
+
         OpenSettingsPage();
     }
 
@@ -45,7 +51,8 @@ public partial class MainWindow
             GridSettingsPanel is null ||
             WallpaperSettingsPanel is null ||
             ColorSettingsPanel is null ||
-            StatusBarSettingsPanel is null)
+            StatusBarSettingsPanel is null ||
+            RegionSettingsPanel is null)
         {
             return;
         }
@@ -55,6 +62,7 @@ public partial class MainWindow
         GridSettingsPanel.IsVisible = selectedIndex == 1;
         ColorSettingsPanel.IsVisible = selectedIndex == 2;
         StatusBarSettingsPanel.IsVisible = selectedIndex == 3;
+        RegionSettingsPanel.IsVisible = selectedIndex == 4;
         ApplyTaskbarActionVisibility(GetCurrentTaskbarContext());
     }
 
@@ -106,12 +114,12 @@ public partial class MainWindow
 
     private void OnRecommendedColorClick(object? sender, RoutedEventArgs e)
     {
-        ApplyThemeColorFromButton(sender as Button, "Recommended");
+        ApplyThemeColorFromButton(sender as Button, L("common.recommended", "Recommended"));
     }
 
     private void OnMonetColorClick(object? sender, RoutedEventArgs e)
     {
-        ApplyThemeColorFromButton(sender as Button, "Monet");
+        ApplyThemeColorFromButton(sender as Button, L("common.monet", "Monet"));
     }
 
     private void OnRefreshMonetColorsClick(object? sender, RoutedEventArgs e)
@@ -119,7 +127,7 @@ public partial class MainWindow
         RefreshColorPalettes();
         EnsureSelectedThemeColor();
         UpdateThemeColorSelectionState();
-        ThemeColorStatusTextBlock.Text = "Monet colors refreshed.";
+        ThemeColorStatusTextBlock.Text = L("settings.color.monet_refreshed", "Monet colors refreshed.");
         UpdateAdaptiveTextSystem();
         PersistSettings();
     }
@@ -128,22 +136,22 @@ public partial class MainWindow
     {
         if (StorageProvider is null)
         {
-            _wallpaperStatus = "Storage provider is unavailable.";
+            _wallpaperStatus = L("settings.wallpaper.storage_unavailable", "Storage provider is unavailable.");
             UpdateWallpaperDisplay();
             return;
         }
 
         var options = new FilePickerOpenOptions
         {
-            Title = "Select wallpaper",
+            Title = L("filepicker.title", "Select wallpaper"),
             AllowMultiple = false,
             FileTypeFilter =
             [
-                new FilePickerFileType("Image files")
+                new FilePickerFileType(L("filepicker.image_files", "Image files"))
                 {
                     Patterns = ["*.png", "*.jpg", "*.jpeg", "*.bmp", "*.gif", "*.webp"]
                 },
-                new FilePickerFileType("Video files")
+                new FilePickerFileType(L("filepicker.video_files", "Video files"))
                 {
                     Patterns = ["*.mp4", "*.mkv", "*.webm", "*.avi", "*.mov", "*.m4v"]
                 }
@@ -162,7 +170,7 @@ public partial class MainWindow
             var importedPath = await ImportWallpaperAssetAsync(file);
             if (string.IsNullOrWhiteSpace(importedPath))
             {
-                _wallpaperStatus = "Failed to import wallpaper file.";
+                _wallpaperStatus = L("settings.wallpaper.import_failed", "Failed to import wallpaper file.");
                 UpdateWallpaperDisplay();
                 return;
             }
@@ -176,17 +184,17 @@ public partial class MainWindow
                     _wallpaperBitmap = new Bitmap(importedPath);
                     _wallpaperVideoPath = null;
                     _wallpaperMediaType = WallpaperMediaType.Image;
-                    _wallpaperStatus = "Image wallpaper applied.";
+                    _wallpaperStatus = L("settings.wallpaper.image_applied", "Image wallpaper applied.");
                     break;
                 case WallpaperMediaType.Video:
                     _wallpaperBitmap?.Dispose();
                     _wallpaperBitmap = null;
                     _wallpaperVideoPath = importedPath;
                     _wallpaperMediaType = WallpaperMediaType.Video;
-                    _wallpaperStatus = "Video wallpaper applied.";
+                    _wallpaperStatus = L("settings.wallpaper.video_applied", "Video wallpaper applied.");
                     break;
                 default:
-                    _wallpaperStatus = "Selected file type is not supported.";
+                    _wallpaperStatus = L("settings.wallpaper.unsupported_file", "Selected file type is not supported.");
                     UpdateWallpaperDisplay();
                     return;
             }
@@ -197,13 +205,13 @@ public partial class MainWindow
             EnsureSelectedThemeColor();
             UpdateThemeColorSelectionState();
             ThemeColorStatusTextBlock.Text = _wallpaperMediaType == WallpaperMediaType.Video
-                ? "Video wallpaper updated. Theme colors refreshed."
+                ? L("settings.color.theme_updated_video", "Video wallpaper updated. Theme colors refreshed.")
-                : "Wallpaper updated. Monet colors refreshed.";
+                : L("settings.color.theme_updated_wallpaper", "Wallpaper updated. Monet colors refreshed.");
             PersistSettings();
         }
         catch (Exception ex)
         {
-            _wallpaperStatus = $"Failed to apply wallpaper: {ex.Message}";
+            _wallpaperStatus = Lf("settings.wallpaper.apply_failed_format", "Failed to apply wallpaper: {0}", ex.Message);
             UpdateWallpaperDisplay();
         }
     }
@@ -216,13 +224,13 @@ public partial class MainWindow
         _wallpaperBitmap?.Dispose();
         _wallpaperBitmap = null;
         _wallpaperPath = null;
-        _wallpaperStatus = "Background reset to solid color.";
+        _wallpaperStatus = L("settings.wallpaper.cleared", "Background reset to solid color.");
         ApplyWallpaperBrush();
         UpdateWallpaperDisplay();
         RefreshColorPalettes();
         EnsureSelectedThemeColor();
         UpdateThemeColorSelectionState();
-        ThemeColorStatusTextBlock.Text = "Wallpaper cleared. Monet colors refreshed.";
+        ThemeColorStatusTextBlock.Text = L("settings.color.theme_cleared_wallpaper", "Wallpaper cleared. Monet colors refreshed.");
         PersistSettings();
     }
 
@@ -231,11 +239,14 @@ public partial class MainWindow
         ApplyWallpaperBrush();
         if (_wallpaperMediaType == WallpaperMediaType.Image && _wallpaperBitmap is not null)
         {
-            _wallpaperStatus = $"Wallpaper mode: {GetPlacementDisplayName(GetSelectedWallpaperPlacement())}.";
+            _wallpaperStatus = Lf(
+                "settings.wallpaper.mode_format",
+                "Wallpaper mode: {0}.",
+                GetLocalizedPlacementDisplayName(GetSelectedWallpaperPlacement()));
         }
         else if (_wallpaperMediaType == WallpaperMediaType.Video)
         {
-            _wallpaperStatus = "Video wallpaper mode uses automatic fill.";
+            _wallpaperStatus = L("settings.wallpaper.video_mode", "Video wallpaper mode uses automatic fill mode.");
         }
 
         UpdateWallpaperDisplay();
@@ -278,7 +289,7 @@ public partial class MainWindow
         }
 
         WallpaperPathTextBlock.Text = string.IsNullOrWhiteSpace(_wallpaperPath)
-            ? "No wallpaper selected."
+            ? L("settings.wallpaper.no_selection", "No wallpaper selected.")
             : Path.GetFileName(_wallpaperPath);
         WallpaperStatusTextBlock.Text = _wallpaperStatus;
         WallpaperPlacementComboBox.IsEnabled = _wallpaperMediaType != WallpaperMediaType.Video;
@@ -404,13 +415,15 @@ public partial class MainWindow
 
         if (string.IsNullOrWhiteSpace(savedWallpaperPath))
         {
-            _wallpaperStatus = "Current background uses solid color.";
+            _wallpaperStatus = L("settings.wallpaper.default_status", "Current background uses solid color.");
             return;
         }
 
         if (!Path.IsPathRooted(savedWallpaperPath) || !File.Exists(savedWallpaperPath))
         {
-            _wallpaperStatus = "Saved wallpaper file was not found. Using solid color background.";
+            _wallpaperStatus = L(
+                "settings.wallpaper.saved_not_found",
+                "Saved wallpaper file was not found. Using solid color background.");
             return;
         }
 
@@ -423,22 +436,26 @@ public partial class MainWindow
                     _wallpaperBitmap = new Bitmap(savedWallpaperPath);
                     _wallpaperPath = savedWallpaperPath;
                     _wallpaperMediaType = WallpaperMediaType.Image;
-                    _wallpaperStatus = "Wallpaper restored from saved settings.";
+                    _wallpaperStatus = L("settings.wallpaper.restored", "Wallpaper restored from saved settings.");
                     break;
                 case WallpaperMediaType.Video:
                     _wallpaperVideoPath = savedWallpaperPath;
                     _wallpaperPath = savedWallpaperPath;
                     _wallpaperMediaType = WallpaperMediaType.Video;
-                    _wallpaperStatus = "Video wallpaper restored from saved settings.";
+                    _wallpaperStatus = L("settings.wallpaper.video_restored", "Video wallpaper restored from saved settings.");
                     break;
                 default:
-                    _wallpaperStatus = "Saved wallpaper type is not supported. Using solid color background.";
+                    _wallpaperStatus = L(
+                        "settings.wallpaper.unsupported_file",
+                        "Saved wallpaper type is not supported. Using solid color background.");
                     break;
             }
         }
         catch
         {
-            _wallpaperStatus = "Failed to restore saved wallpaper. Using solid color background.";
+            _wallpaperStatus = L(
+                "settings.wallpaper.restore_failed",
+                "Failed to restore saved wallpaper. Using solid color background.");
             _wallpaperBitmap?.Dispose();
             _wallpaperBitmap = null;
             _wallpaperMediaType = WallpaperMediaType.None;
@@ -538,7 +555,7 @@ public partial class MainWindow
     {
         if (!File.Exists(videoPath))
         {
-            _wallpaperStatus = "Video wallpaper file not found.";
+            _wallpaperStatus = L("settings.wallpaper.video_not_found", "Video wallpaper file not found.");
             StopVideoWallpaper();
             return;
         }
@@ -552,7 +569,7 @@ public partial class MainWindow
                 DesktopVideoWallpaperView is null ||
                 WallpaperPreviewVideoView is null)
             {
-                _wallpaperStatus = "Video player is unavailable.";
+                _wallpaperStatus = L("settings.wallpaper.video_player_unavailable", "Video player is unavailable.");
                 StopVideoWallpaper();
                 return;
             }
@@ -570,7 +587,7 @@ public partial class MainWindow
         }
         catch (Exception ex)
         {
-            _wallpaperStatus = $"Failed to play video wallpaper: {ex.Message}";
+            _wallpaperStatus = Lf("settings.wallpaper.video_play_failed_format", "Failed to play video wallpaper: {0}", ex.Message);
             StopVideoWallpaper();
         }
     }
@@ -676,16 +693,17 @@ public partial class MainWindow
             1 => TaskbarContext.SettingsGrid,
             2 => TaskbarContext.SettingsColor,
             3 => TaskbarContext.SettingsStatusBar,
+            4 => TaskbarContext.SettingsRegion,
             _ => TaskbarContext.Desktop
         };
     }
 
     private void ApplyTaskbarActionVisibility(TaskbarContext context)
     {
-        if (BackToWindowsContainer is null ||
+        if (BackToWindowsButton is null ||
-            OpenSettingsContainer is null ||
+            OpenSettingsButton is null ||
-            WallpaperPreviewBackButtonContainer is null ||
+            WallpaperPreviewBackButtonVisual is null ||
-            WallpaperPreviewSettingsButtonContainer is null)
+            WallpaperPreviewSettingsButtonIcon is null)
         {
             return;
         }
@@ -693,19 +711,29 @@ public partial class MainWindow
         var showMinimize = _pinnedTaskbarActions.Contains(TaskbarActionId.MinimizeToWindows);
         var showSettings = _pinnedTaskbarActions.Contains(TaskbarActionId.OpenSettings);
 
-        BackToWindowsContainer.IsVisible = showMinimize;
+        BackToWindowsButton.IsVisible = showMinimize;
-        OpenSettingsContainer.IsVisible = showSettings;
+        OpenSettingsButton.IsVisible = showSettings;
-        WallpaperPreviewBackButtonContainer.IsVisible = showMinimize;
+        WallpaperPreviewBackButtonVisual.IsVisible = showMinimize;
-        WallpaperPreviewSettingsButtonContainer.IsVisible = showSettings;
+        WallpaperPreviewSettingsButtonIcon.IsVisible = showSettings;
 
         if (TaskbarFixedActionsHost is not null)
         {
-            TaskbarFixedActionsHost.IsVisible = showMinimize || showSettings;
+            TaskbarFixedActionsHost.IsVisible = showMinimize;
+        }
+
+        if (TaskbarSettingsActionHost is not null)
+        {
+            TaskbarSettingsActionHost.IsVisible = showSettings;
         }
 
         if (WallpaperPreviewTaskbarFixedActionsHost is not null)
         {
-            WallpaperPreviewTaskbarFixedActionsHost.IsVisible = showMinimize || showSettings;
+            WallpaperPreviewTaskbarFixedActionsHost.IsVisible = showMinimize;
+        }
+
+        if (WallpaperPreviewTaskbarSettingsActionHost is not null)
+        {
+            WallpaperPreviewTaskbarSettingsActionHost.IsVisible = showSettings;
         }
 
         var dynamicActions = ResolveDynamicTaskbarActions(context);
@@ -721,6 +749,30 @@ public partial class MainWindow
         {
             WallpaperPreviewTaskbarDynamicActionsHost.IsVisible = hasDynamicActions;
         }
+
+        UpdateOpenSettingsActionVisualState();
+    }
+
+    private void UpdateOpenSettingsActionVisualState()
+    {
+        if (OpenSettingsButtonTextBlock is null || OpenSettingsButton is null)
+        {
+            return;
+        }
+
+        var showBackToDesktop = _isSettingsOpen;
+        OpenSettingsButtonTextBlock.IsVisible = showBackToDesktop;
+        OpenSettingsButtonTextBlock.Text = L("settings.back_to_desktop", "Back to Desktop");
+        ToolTip.SetTip(
+            OpenSettingsButton,
+            showBackToDesktop
+                ? L("settings.back_to_desktop", "Back to Desktop")
+                : L("tooltip.open_settings", "Settings"));
+
+        var effectiveCellSize = _currentDesktopCellSize > 0
+            ? _currentDesktopCellSize
+            : Math.Max(32, Math.Min(Bounds.Width, Bounds.Height) / Math.Max(1, _targetShortSideCells));
+        ApplyWidgetSizing(effectiveCellSize);
     }
 
     private IReadOnlyList<TaskbarActionItem> ResolveDynamicTaskbarActions(TaskbarContext context)
@@ -804,6 +856,7 @@ public partial class MainWindow
             WallpaperPath = _wallpaperPath,
             WallpaperPlacement = GetPlacementDisplayName(GetSelectedWallpaperPlacement()),
             SettingsTabIndex = Math.Max(0, SettingsNavListBox?.SelectedIndex ?? 0),
+            LanguageCode = _languageCode,
             TopStatusComponentIds = _topStatusComponentIds.ToList(),
             PinnedTaskbarActions = _pinnedTaskbarActions.Select(action => action.ToString()).ToList(),
             EnableDynamicTaskbarActions = _enableDynamicTaskbarActions,
@@ -863,7 +916,9 @@ public partial class MainWindow
         _suppressThemeToggleEvents = true;
         NightModeToggleSwitch.IsChecked = enabled;
         _suppressThemeToggleEvents = false;
-        ThemeModeStatusTextBlock.Text = enabled ? "Night mode enabled" : "Day mode enabled";
+        ThemeModeStatusTextBlock.Text = enabled
+            ? L("settings.color.mode_night", "Night mode enabled")
+            : L("settings.color.mode_day", "Day mode enabled");
 
         if (refreshPalettes)
         {
@@ -872,7 +927,10 @@ public partial class MainWindow
         }
 
         UpdateThemeColorSelectionState();
-        ThemeColorStatusTextBlock.Text = $"Theme mode: {(enabled ? "Night" : "Day")}.";
+        ThemeColorStatusTextBlock.Text = Lf(
+            "settings.color.mode_status_format",
+            "Theme mode: {0}.",
+            enabled ? L("common.night", "Night") : L("common.day", "Day"));
         UpdateAdaptiveTextSystem();
         ApplyWallpaperBrush();
         PersistSettings();
@@ -960,7 +1018,11 @@ public partial class MainWindow
 
         _selectedThemeColor = color;
         UpdateThemeColorSelectionState();
-        ThemeColorStatusTextBlock.Text = $"{sourceLabel} color applied: {_selectedThemeColor}.";
+        ThemeColorStatusTextBlock.Text = Lf(
+            "settings.color.theme_applied_format",
+            "{0} color applied: {1}.",
+            sourceLabel,
+            _selectedThemeColor);
         UpdateAdaptiveTextSystem();
         PersistSettings();
     }
@@ -1131,12 +1193,7 @@ public partial class MainWindow
         ApplyTaskbarActionVisibility(GetCurrentTaskbarContext());
         SettingsPage.IsVisible = true;
         SettingsPage.Opacity = 0;
-        if (_settingsContentPanelTransform is not null)
-        {
-            _settingsContentPanelTransform.Y = 30;
-        }
 
-        DesktopPage.IsHitTestVisible = false;
         UpdateWallpaperPreviewLayout();
 
         Dispatcher.UIThread.Post(() =>
@@ -1147,10 +1204,6 @@ public partial class MainWindow
             }
 
             SettingsPage.Opacity = 1;
-            if (_settingsContentPanelTransform is not null)
-            {
-                _settingsContentPanelTransform.Y = 0;
-            }
         }, DispatcherPriority.Background);
     }
 
@@ -1166,13 +1219,7 @@ public partial class MainWindow
         ApplyWallpaperBrush();
         ApplyTaskbarActionVisibility(GetCurrentTaskbarContext());
 
-        DesktopPage.IsHitTestVisible = true;
-
         SettingsPage.Opacity = 0;
-        if (_settingsContentPanelTransform is not null)
-        {
-            _settingsContentPanelTransform.Y = 30;
-        }
 
         DispatcherTimer.RunOnce(() =>
         {
@@ -1182,6 +1229,6 @@ public partial class MainWindow
             }
 
             SettingsPage.IsVisible = false;
-        }, TimeSpan.FromMilliseconds(SettingsTransitionDurationMs));
+        }, TimeSpan.FromMilliseconds(200));
     }
 }

LanMontainDesktop/Views/MainWindow.axaml

@@ -1,4 +1,4 @@
-<Window xmlns="https://github.com/avaloniaui"
+<Window xmlns="https://github.com/avaloniaui"
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         xmlns:vm="using:LanMontainDesktop.ViewModels"
         xmlns:ui="using:FluentAvalonia.UI.Controls"
@@ -113,60 +113,38 @@
                             Margin="4"
                             CornerRadius="18"
                             Padding="6">
-                        <Grid ColumnDefinitions="Auto,*"
+                        <Grid ColumnDefinitions="Auto,*,Auto"
                               ColumnSpacing="8">
                             <Border x:Name="TaskbarFixedActionsHost"
                                     Grid.Column="0"
                                     Background="Transparent"
                                     BorderThickness="0">
-                                <Grid ColumnDefinitions="Auto,Auto"
+                                <Grid ColumnDefinitions="Auto"
                                       ColumnSpacing="8">
-                                    <Border x:Name="BackToWindowsContainer"
+                                    <Button x:Name="BackToWindowsButton"
                                             Grid.Column="0"
+                                            Padding="8"
+                                            HorizontalAlignment="Stretch"
+                                            VerticalAlignment="Stretch"
                                             Background="Transparent"
-                                            CornerRadius="12">
+                                            BorderThickness="0"
-                                        <Button x:Name="BackToWindowsButton"
+                                            Foreground="{DynamicResource AdaptiveTextPrimaryBrush}"
-                                                Padding="8"
+                                            Click="OnMinimizeClick"
-                                                HorizontalAlignment="Stretch"
+                                            ToolTip.Tip="&#22238;&#21040;Windows">
-                                                VerticalAlignment="Stretch"
+                                        <StackPanel Orientation="Horizontal"
-                                                Background="Transparent"
+                                                    HorizontalAlignment="Center"
-                                                BorderThickness="0"
+                                                    VerticalAlignment="Center"
-                                                Foreground="{DynamicResource AdaptiveTextPrimaryBrush}"
+                                                    Spacing="8">
-                                                Click="OnMinimizeClick"
+                                            <fi:SymbolIcon Classes="icon-m"
-                                                ToolTip.Tip="&#22238;&#21040;Windows">
+                                                           Symbol="Window"
-                                            <StackPanel Orientation="Horizontal"
-                                                        HorizontalAlignment="Center"
-                                                        VerticalAlignment="Center"
-                                                        Spacing="8">
-                                                <fi:SymbolIcon Classes="icon-m"
-                                                               Symbol="Window"
-                                                               IconVariant="Regular"
-                                                               />
-                                                <TextBlock Foreground="{DynamicResource AdaptiveTextPrimaryBrush}"
-                                                           Text="&#22238;&#21040;Windows" />
-                                            </StackPanel>
-                                        </Button>
-                                    </Border>
-
-                                    <Border x:Name="OpenSettingsContainer"
-                                            Grid.Column="1"
-                                            Background="Transparent"
-                                            CornerRadius="12">
-                                        <Button x:Name="OpenSettingsButton"
-                                                Padding="6"
-                                                HorizontalAlignment="Stretch"
-                                                VerticalAlignment="Stretch"
-                                                Background="Transparent"
-                                                BorderThickness="0"
-                                                Foreground="{DynamicResource AdaptiveTextPrimaryBrush}"
-                                                Click="OnOpenSettingsClick"
-                                                ToolTip.Tip="&#35774;&#32622;">
-                                            <fi:SymbolIcon Classes="icon-l"
-                                                           Symbol="Settings"
                                                            IconVariant="Regular"
                                                            />
-                                        </Button>
+                                            <TextBlock x:Name="BackToWindowsTextBlock"
-                                    </Border>
+                                                       Foreground="{DynamicResource AdaptiveTextPrimaryBrush}"
+                                                       Text="&#22238;&#21040;Windows" />
+                                        </StackPanel>
+                                    </Button>
+
                                 </Grid>
                             </Border>
 
@@ -179,6 +157,34 @@
                                             Orientation="Horizontal"
                                             Spacing="8" />
                             </Border>
+
+                            <Border x:Name="TaskbarSettingsActionHost"
+                                    Grid.Column="2"
+                                    Background="Transparent"
+                                    BorderThickness="0">
+                                <Button x:Name="OpenSettingsButton"
+                                        Padding="6"
+                                        HorizontalAlignment="Stretch"
+                                        VerticalAlignment="Stretch"
+                                        Background="Transparent"
+                                        BorderThickness="0"
+                                        Foreground="{DynamicResource AdaptiveTextPrimaryBrush}"
+                                        Click="OnOpenSettingsClick"
+                                        ToolTip.Tip="&#35774;&#32622;">
+                                    <StackPanel Orientation="Horizontal"
+                                                HorizontalAlignment="Center"
+                                                VerticalAlignment="Center"
+                                                Spacing="6">
+                                        <fi:SymbolIcon Classes="icon-l"
+                                                       Symbol="Settings"
+                                                       IconVariant="Regular" />
+                                        <TextBlock x:Name="OpenSettingsButtonTextBlock"
+                                                   IsVisible="False"
+                                                   Foreground="{DynamicResource AdaptiveTextPrimaryBrush}"
+                                                   Text="&#36820;&#22238;&#26700;&#38754;" />
+                                    </StackPanel>
+                                </Button>
+                            </Border>
                         </Grid>
                     </Border>
                     </Grid>
@@ -199,11 +205,10 @@
                     Classes="glass-overlay" />
 
             <Border x:Name="SettingsContentPanel"
-                    Classes="glass-strong"
+                    Background="Transparent"
-                    Margin="24"
+                    BorderThickness="0"
-                    Padding="24"
+                    Margin="0"
-                    MaxWidth="1240"
+                    Padding="8">
-                    CornerRadius="16">
                 <Border.RenderTransform>
                     <TranslateTransform Y="30">
                         <TranslateTransform.Transitions>
@@ -214,19 +219,15 @@
                     </TranslateTransform>
                 </Border.RenderTransform>
 
-                <Grid RowDefinitions="Auto,*,Auto"
+                <Grid RowDefinitions="Auto,*"
                       RowSpacing="16">
-                <Grid ColumnDefinitions="*,Auto">
+                <Grid ColumnDefinitions="*">
-                    <TextBlock VerticalAlignment="Center"
+                    <TextBlock x:Name="SettingsTitleTextBlock"
-                               FontSize="30"
+                               VerticalAlignment="Center"
-                               FontWeight="Bold"
+                               FontSize="22"
+                               FontWeight="SemiBold"
                                Foreground="{DynamicResource AdaptiveTextPrimaryBrush}"
                                Text="&#35774;&#32622;" />
-                    <Button Grid.Column="1"
-                            Padding="14,8"
-                            Foreground="{DynamicResource AdaptiveTextPrimaryBrush}"
-                            Click="OnCloseSettingsClick"
-                            Content="&#36820;&#22238;&#26700;&#38754;" />
                 </Grid>
 
                 <Border Grid.Row="1"
@@ -263,16 +264,18 @@
                             </Border.Styles>
 
                             <StackPanel Spacing="10">
-                                <TextBlock FontSize="16"
+                                <TextBlock x:Name="SettingsNavHeaderTextBlock"
+                                           FontSize="16"
                                            FontWeight="SemiBold"
                                            Foreground="{DynamicResource AdaptiveTextSecondaryBrush}"
                                            Text="&#35774;&#32622;&#36873;&#39033;" />
                                 <ListBox x:Name="SettingsNavListBox"
                                          SelectionChanged="OnSettingsNavSelectionChanged">
-                                    <ListBoxItem Content="&#22721;&#32440;" />
+                                    <ListBoxItem x:Name="SettingsNavWallpaperItem" Content="&#22721;&#32440;" />
-                                    <ListBoxItem Content="&#32593;&#26684;" />
+                                    <ListBoxItem x:Name="SettingsNavGridItem" Content="&#32593;&#26684;" />
-                                    <ListBoxItem Content="&#39068;&#33394;" />
+                                    <ListBoxItem x:Name="SettingsNavColorItem" Content="&#39068;&#33394;" />
-                                    <ListBoxItem Content="&#29366;&#24577;&#26639;" />
+                                    <ListBoxItem x:Name="SettingsNavStatusBarItem" Content="&#29366;&#24577;&#26639;" />
+                                    <ListBoxItem x:Name="SettingsNavRegionItem" Content="&#22320;&#21306;" />
                                 </ListBox>
                             </StackPanel>
                         </Border>
@@ -285,11 +288,13 @@
                                 <StackPanel x:Name="WallpaperSettingsPanel"
                                             IsVisible="True"
                                             Spacing="14">
-                                    <TextBlock FontSize="18"
+                                    <TextBlock x:Name="WallpaperPanelTitleTextBlock"
+                                               FontSize="18"
                                                FontWeight="SemiBold"
                                                Foreground="{DynamicResource AdaptiveTextSecondaryBrush}"
                                                Text="&#22721;&#32440;" />
-                                    <TextBlock Foreground="{DynamicResource AdaptiveTextSecondaryBrush}"
+                                    <TextBlock x:Name="WallpaperPanelDescriptionTextBlock"
+                                               Foreground="{DynamicResource AdaptiveTextSecondaryBrush}"
                                                Text="&#36873;&#25321;&#22270;&#29255;&#21518;&#21487;&#31435;&#21363;&#35774;&#20026;&#24212;&#29992;&#31383;&#21475;&#22721;&#32440;&#12290;" />
 
                                     <Border x:Name="WallpaperPreviewHost"
@@ -351,44 +356,31 @@
                                                             Margin="3"
                                                             CornerRadius="8"
                                                             Padding="2">
-                                                        <Grid ColumnDefinitions="Auto,*"
+                                                        <Grid ColumnDefinitions="Auto,*,Auto"
                                                               ColumnSpacing="3">
                                                             <Border x:Name="WallpaperPreviewTaskbarFixedActionsHost"
                                                                     Grid.Column="0"
                                                                     Background="Transparent"
                                                                     BorderThickness="0">
-                                                                <Grid ColumnDefinitions="Auto,Auto"
+                                                                <Grid ColumnDefinitions="Auto"
                                                                       ColumnSpacing="3">
-                                                                    <Border x:Name="WallpaperPreviewBackButtonContainer"
+                                                                    <StackPanel x:Name="WallpaperPreviewBackButtonVisual"
-                                                                            Grid.Column="0"
+                                                                                Grid.Column="0"
-                                                                            Background="Transparent"
+                                                                                Orientation="Horizontal"
-                                                                            CornerRadius="6">
+                                                                                HorizontalAlignment="Center"
-                                                                        <StackPanel Orientation="Horizontal"
+                                                                                VerticalAlignment="Center"
-                                                                                    HorizontalAlignment="Center"
+                                                                                Spacing="3">
-                                                                                    VerticalAlignment="Center"
+                                                                        <fi:SymbolIcon Classes="icon-s"
-                                                                                    Spacing="3">
+                                                                                       Symbol="Window"
-                                                                            <fi:SymbolIcon Classes="icon-s"
-                                                                                           Symbol="Window"
-                                                                                           IconVariant="Regular"
-                                                                                           />
-                                                                            <TextBlock x:Name="WallpaperPreviewBackButtonTextBlock"
-                                                                                       HorizontalAlignment="Center"
-                                                                                       VerticalAlignment="Center"
-                                                                                       Foreground="{DynamicResource AdaptiveTextPrimaryBrush}"
-                                                                                       Text="&#22238;&#21040;Windows" />
-                                                                        </StackPanel>
-                                                                    </Border>
-
-                                                                    <Border x:Name="WallpaperPreviewSettingsButtonContainer"
-                                                                            Grid.Column="1"
-                                                                            Background="Transparent"
-                                                                            CornerRadius="6">
-                                                                        <fi:SymbolIcon x:Name="WallpaperPreviewSettingsButtonIcon"
-                                                                                       Classes="icon-s"
-                                                                                       Symbol="Settings"
                                                                                        IconVariant="Regular"
                                                                                        />
-                                                                    </Border>
+                                                                        <TextBlock x:Name="WallpaperPreviewBackButtonTextBlock"
+                                                                                   HorizontalAlignment="Center"
+                                                                                   VerticalAlignment="Center"
+                                                                                   Foreground="{DynamicResource AdaptiveTextPrimaryBrush}"
+                                                                                   Text="&#22238;&#21040;Windows" />
+                                                                    </StackPanel>
+
                                                                 </Grid>
                                                             </Border>
 
@@ -401,6 +393,16 @@
                                                                             Orientation="Horizontal"
                                                                             Spacing="3" />
                                                             </Border>
+
+                                                            <Border x:Name="WallpaperPreviewTaskbarSettingsActionHost"
+                                                                    Grid.Column="2"
+                                                                    Background="Transparent"
+                                                                    BorderThickness="0">
+                                                                <fi:SymbolIcon x:Name="WallpaperPreviewSettingsButtonIcon"
+                                                                               Classes="icon-s"
+                                                                               Symbol="Settings"
+                                                                               IconVariant="Regular" />
+                                                            </Border>
                                                         </Grid>
                                                     </Border>
                                                     </Grid>
@@ -413,7 +415,8 @@
                                           RowDefinitions="Auto,Auto,Auto"
                                           ColumnSpacing="10"
                                           RowSpacing="10">
-                                        <TextBlock VerticalAlignment="Center"
+                                        <TextBlock x:Name="WallpaperCurrentLabelTextBlock"
+                                                   VerticalAlignment="Center"
                                                    Foreground="{DynamicResource AdaptiveTextSecondaryBrush}"
                                                    Text="&#24403;&#21069;&#22721;&#32440;" />
                                         <TextBlock x:Name="WallpaperPathTextBlock"
@@ -423,7 +426,8 @@
                                                    Foreground="{DynamicResource AdaptiveTextAccentBrush}"
                                                    Text="&#26410;&#36873;&#25321;&#22721;&#32440;" />
 
-                                        <TextBlock Grid.Row="1"
+                                        <TextBlock x:Name="WallpaperPlacementLabelTextBlock"
+                                                   Grid.Row="1"
                                                    VerticalAlignment="Center"
                                                    Foreground="{DynamicResource AdaptiveTextSecondaryBrush}"
                                                    Text="&#26174;&#31034;&#26041;&#24335;" />
@@ -443,11 +447,13 @@
                                                     Grid.ColumnSpan="2"
                                                     Orientation="Horizontal"
                                                     Spacing="10">
-                                            <Button Padding="12,6"
+                                            <Button x:Name="PickWallpaperButton"
+                                                    Padding="12,6"
                                                     Foreground="{DynamicResource AdaptiveTextPrimaryBrush}"
                                                     Click="OnPickWallpaperClick"
                                                     Content="&#27983;&#35272;&#22270;&#29255;" />
-                                            <Button Padding="12,6"
+                                            <Button x:Name="ClearWallpaperButton"
+                                                    Padding="12,6"
                                                     Foreground="{DynamicResource AdaptiveTextPrimaryBrush}"
                                                     Click="OnClearWallpaperClick"
                                                     Content="&#24674;&#22797;&#32431;&#33394;" />
@@ -462,18 +468,21 @@
                                 <StackPanel x:Name="GridSettingsPanel"
                                             IsVisible="False"
                                             Spacing="14">
-                                    <TextBlock FontSize="18"
+                                    <TextBlock x:Name="GridPanelTitleTextBlock"
+                                               FontSize="18"
                                                FontWeight="SemiBold"
                                                Foreground="{DynamicResource AdaptiveTextSecondaryBrush}"
                                                Text="Grid layout" />
-                                    <TextBlock Foreground="{DynamicResource AdaptiveTextSecondaryBrush}"
+                                    <TextBlock x:Name="GridPanelDescriptionTextBlock"
+                                               Foreground="{DynamicResource AdaptiveTextSecondaryBrush}"
                                                Text="Every component must occupy at least one cell (minimum 1x1)." />
 
                                     <Grid ColumnDefinitions="Auto,Auto,Auto"
                                           RowDefinitions="Auto,Auto"
                                           ColumnSpacing="8"
                                           RowSpacing="8">
-                                        <TextBlock Grid.Row="0"
+                                        <TextBlock x:Name="GridShortSideLabelTextBlock"
+                                                   Grid.Row="0"
                                                    Grid.Column="0"
                                                    VerticalAlignment="Center"
                                                    Foreground="{DynamicResource AdaptiveTextSecondaryBrush}"
@@ -486,7 +495,8 @@
                                                       Maximum="96"
                                                       Foreground="{DynamicResource AdaptiveTextPrimaryBrush}"
                                                       Value="12" />
-                                        <Button Grid.Row="0"
+                                        <Button x:Name="ApplyGridButton"
+                                                Grid.Row="0"
                                                 Grid.Column="2"
                                                 Padding="12,6"
                                                 Foreground="{DynamicResource AdaptiveTextPrimaryBrush}"
@@ -505,16 +515,19 @@
                                 <StackPanel x:Name="ColorSettingsPanel"
                                             IsVisible="False"
                                             Spacing="14">
-                                    <TextBlock FontSize="18"
+                                    <TextBlock x:Name="ColorPanelTitleTextBlock"
+                                               FontSize="18"
                                                FontWeight="SemiBold"
                                                Foreground="{DynamicResource AdaptiveTextSecondaryBrush}"
                                                Text="Color" />
-                                    <TextBlock Foreground="{DynamicResource AdaptiveTextSecondaryBrush}"
+                                    <TextBlock x:Name="ColorPanelDescriptionTextBlock"
+                                               Foreground="{DynamicResource AdaptiveTextSecondaryBrush}"
                                                Text="Switch day/night mode and pick app accent colors." />
 
                                     <Grid ColumnDefinitions="Auto,Auto,*"
                                           ColumnSpacing="12">
-                                        <TextBlock VerticalAlignment="Center"
+                                        <TextBlock x:Name="DayNightModeLabelTextBlock"
+                                                   VerticalAlignment="Center"
                                                    Foreground="{DynamicResource AdaptiveTextSecondaryBrush}"
                                                    Text="&#26085;&#22812;&#27169;&#24335;" />
                                         <ToggleSwitch x:Name="NightModeToggleSwitch"
@@ -530,7 +543,8 @@
                                                    Text="Night mode enabled" />
                                     </Grid>
 
-                                    <TextBlock Foreground="{DynamicResource AdaptiveTextSecondaryBrush}"
+                                    <TextBlock x:Name="RecommendedColorsLabelTextBlock"
+                                               Foreground="{DynamicResource AdaptiveTextSecondaryBrush}"
                                                Text="Recommended Colors" />
                                     <WrapPanel ItemWidth="72"
                                                ItemHeight="56"
@@ -605,10 +619,12 @@
 
                                     <Grid ColumnDefinitions="*,Auto"
                                           ColumnSpacing="10">
-                                        <TextBlock VerticalAlignment="Center"
+                                        <TextBlock x:Name="SystemMonetColorsLabelTextBlock"
+                                                   VerticalAlignment="Center"
                                                    Foreground="{DynamicResource AdaptiveTextSecondaryBrush}"
                                                    Text="System Monet Colors" />
-                                        <Button Grid.Column="1"
+                                        <Button x:Name="RefreshMonetColorsButton"
+                                                Grid.Column="1"
                                                 Padding="10,6"
                                                 Click="OnRefreshMonetColorsClick"
                                                 Content="Refresh" />
@@ -693,14 +709,17 @@
                                 <StackPanel x:Name="StatusBarSettingsPanel"
                                             IsVisible="False"
                                             Spacing="14">
-                                    <TextBlock FontSize="18"
+                                    <TextBlock x:Name="StatusBarPanelTitleTextBlock"
+                                               FontSize="18"
                                                FontWeight="SemiBold"
                                                Foreground="{DynamicResource AdaptiveTextSecondaryBrush}"
                                                Text="Status Bar" />
-                                    <TextBlock Foreground="{DynamicResource AdaptiveTextSecondaryBrush}"
+                                    <TextBlock x:Name="StatusBarPanelDescriptionTextBlock"
+                                               Foreground="{DynamicResource AdaptiveTextSecondaryBrush}"
                                                Text="Choose which components appear on the top status bar." />
 
-                                    <ui:SettingsExpander Header="&#26102;&#38388;&#32452;&#20214;">
+                                    <ui:SettingsExpander x:Name="StatusBarClockSettingsExpander"
+                                                         Header="&#26102;&#38388;&#32452;&#20214;">
                                         <Grid ColumnDefinitions="Auto,*"
                                               ColumnSpacing="12">
                                             <ToggleSwitch x:Name="StatusBarClockToggleSwitch"
@@ -709,32 +728,54 @@
                                                           OffContent="Off"
                                                           Checked="OnStatusBarClockChecked"
                                                           Unchecked="OnStatusBarClockUnchecked" />
-                                            <TextBlock Grid.Column="1"
+                                            <TextBlock x:Name="StatusBarClockDescriptionTextBlock"
+                                                       Grid.Column="1"
                                                        VerticalAlignment="Center"
                                                        Foreground="{DynamicResource AdaptiveTextSecondaryBrush}"
                                                        Text="&#22312;&#39030;&#37096;&#29366;&#24577;&#26639;&#26174;&#31034;&#26102;&#38047;&#12290;" />
                                         </Grid>
                                     </ui:SettingsExpander>
                                 </StackPanel>
+
+                                <StackPanel x:Name="RegionSettingsPanel"
+                                            IsVisible="False"
+                                            Spacing="14">
+                                    <TextBlock x:Name="RegionPanelTitleTextBlock"
+                                               FontSize="18"
+                                               FontWeight="SemiBold"
+                                               Foreground="{DynamicResource AdaptiveTextSecondaryBrush}"
+                                               Text="&#22320;&#21306;" />
+                                    <TextBlock x:Name="RegionPanelDescriptionTextBlock"
+                                               Foreground="{DynamicResource AdaptiveTextSecondaryBrush}"
+                                               Text="&#36873;&#25321;&#35821;&#35328;&#65292;&#31435;&#21363;&#24212;&#29992;&#21040;&#35774;&#32622;&#19982;&#20027;&#35201;&#30028;&#38754;&#12290;" />
+
+                                    <ui:SettingsExpander x:Name="LanguageSettingsExpander"
+                                                         Header="&#35821;&#35328;">
+                                        <Grid ColumnDefinitions="Auto,*"
+                                              ColumnSpacing="12">
+                                            <TextBlock x:Name="LanguageLabelTextBlock"
+                                                       Grid.Column="0"
+                                                       VerticalAlignment="Center"
+                                                       Foreground="{DynamicResource AdaptiveTextSecondaryBrush}"
+                                                       Text="&#35821;&#35328;" />
+                                            <ComboBox x:Name="LanguageComboBox"
+                                                      Grid.Column="1"
+                                                      Width="220"
+                                                      SelectionChanged="OnLanguageSelectionChanged">
+                                                <ComboBoxItem x:Name="LanguageChineseItem" Tag="zh-CN" Content="&#20013;&#25991;" />
+                                                <ComboBoxItem x:Name="LanguageEnglishItem" Tag="en-US" Content="English" />
+                                            </ComboBox>
+                                        </Grid>
+                                    </ui:SettingsExpander>
+                                </StackPanel>
                             </Grid>
                         </Border>
                     </Grid>
                 </Border>
 
-                <Border Grid.Row="2"
-                        Classes="glass-panel"
-                        CornerRadius="10"
-                        Padding="8,6">
-                    <TextBlock HorizontalAlignment="Center"
-                               Foreground="{DynamicResource AdaptiveTextMutedBrush}"
-                               Text="LanMontainDesktop Settings" />
-                </Border>
                 </Grid>
             </Border>
         </Grid>
     </Grid>
 
 </Window>
-
-
-

LanMontainDesktop/Views/MainWindow.axaml.cs

@@ -43,6 +43,7 @@ public partial class MainWindow : Window
     private const int MinShortSideCells = 6;
     private const int MaxShortSideCells = 96;
     private const int SettingsTransitionDurationMs = 240;
+    private const double WallpaperPreviewMaxWidth = 520;
     private const double LightBackgroundLuminanceThreshold = 0.57;
     private const string ClockStatusComponentId = "Clock";
     private const string TaskbarLayoutBottomFullRowMacStyle = "BottomFullRowMacStyle";
@@ -62,6 +63,7 @@ public partial class MainWindow : Window
     private readonly record struct GridMetrics(int ColumnCount, int RowCount, double CellSize);
     private readonly MonetColorService _monetColorService = new();
     private readonly AppSettingsService _appSettingsService = new();
+    private readonly LocalizationService _localizationService = new();
     private readonly FluentAvaloniaTheme? _fluentAvaloniaTheme;
     private readonly HashSet<string> _topStatusComponentIds = new(StringComparer.OrdinalIgnoreCase);
     private readonly HashSet<TaskbarActionId> _pinnedTaskbarActions = [];
@@ -71,7 +73,9 @@ public partial class MainWindow : Window
     private bool _enableDynamicTaskbarActions;
     private bool _suppressThemeToggleEvents;
     private bool _suppressStatusBarToggleEvents;
+    private bool _suppressLanguageSelectionEvents;
     private bool _suppressSettingsPersistence;
+    private bool _isUpdatingWallpaperPreviewLayout;
     private TranslateTransform? _settingsContentPanelTransform;
     private IBrush? _defaultDesktopBackground;
     private Bitmap? _wallpaperBitmap;
@@ -87,7 +91,9 @@ public partial class MainWindow : Window
     private IReadOnlyList<Color> _recommendedColors = Array.Empty<Color>();
     private IReadOnlyList<Color> _monetColors = Array.Empty<Color>();
     private Color _selectedThemeColor = Color.Parse("#FF3B82F6");
+    private double _currentDesktopCellSize;
     private string _taskbarLayoutMode = TaskbarLayoutBottomFullRowMacStyle;
+    private string _languageCode = "zh-CN";
 
     public MainWindow()
     {
@@ -109,12 +115,13 @@ public partial class MainWindow : Window
             MaxShortSideCells);
         GridSizeNumberBox.Value = _targetShortSideCells;
 
-        SettingsNavListBox.SelectedIndex = Math.Clamp(snapshot.SettingsTabIndex, 0, 3);
+        SettingsNavListBox.SelectedIndex = Math.Clamp(snapshot.SettingsTabIndex, 0, 4);
         UpdateSettingsTabContent();
 
         WallpaperPlacementComboBox.SelectedIndex = GetPlacementIndexFromSetting(snapshot.WallpaperPlacement);
         _defaultDesktopBackground = DesktopWallpaperLayer.Background;
         ApplyTaskbarSettings(snapshot);
+        InitializeLocalization(snapshot.LanguageCode);
 
         TryRestoreWallpaper(snapshot.WallpaperPath);
         ApplyWallpaperBrush();
@@ -130,7 +137,8 @@ public partial class MainWindow : Window
         _suppressStatusBarToggleEvents = true;
         StatusBarClockToggleSwitch.IsChecked = _topStatusComponentIds.Contains(ClockStatusComponentId);
         _suppressStatusBarToggleEvents = false;
-        ThemeColorStatusTextBlock.Text = $"Theme color ready: {_selectedThemeColor}.";
+        ApplyLocalization();
+        ThemeColorStatusTextBlock.Text = Lf("settings.color.theme_ready_format", "Theme color ready: {0}.", _selectedThemeColor);
         _settingsContentPanelTransform = SettingsContentPanel.RenderTransform as TranslateTransform;
         DesktopHost.SizeChanged += OnDesktopHostSizeChanged;
         WallpaperPreviewHost.SizeChanged += OnWallpaperPreviewHostSizeChanged;
@@ -208,6 +216,7 @@ public partial class MainWindow : Window
         {
             return;
         }
+        _currentDesktopCellSize = gridMetrics.CellSize;
 
         DesktopGrid.RowDefinitions.Clear();
         DesktopGrid.ColumnDefinitions.Clear();
@@ -240,9 +249,14 @@ public partial class MainWindow : Window
         ApplyTaskbarActionVisibility(GetCurrentTaskbarContext());
 
         ApplyWidgetSizing(gridMetrics.CellSize);
+        UpdateSettingsViewportInsets(gridMetrics.CellSize);
 
-        GridInfoTextBlock.Text =
+        GridInfoTextBlock.Text = Lf(
-            $"Grid: {gridMetrics.ColumnCount} cols x {gridMetrics.RowCount} rows | cell {gridMetrics.CellSize:F1}px (1:1)";
+            "settings.grid.info_format",
+            "Grid: {0} cols x {1} rows | cell {2:F1}px (1:1)",
+            gridMetrics.ColumnCount,
+            gridMetrics.RowCount,
+            gridMetrics.CellSize);
 
         UpdateWallpaperPreviewLayout();
     }
@@ -308,20 +322,46 @@ public partial class MainWindow : Window
         BottomTaskbarContainer.CornerRadius = new CornerRadius(Math.Clamp(cellSize * 0.24, 10, 24));
         BottomTaskbarContainer.Padding = new Thickness(Math.Clamp(cellSize * 0.08, 2, 10));
 
-        BackToWindowsContainer.Margin = new Thickness(0);
+        BackToWindowsButton.Margin = new Thickness(0);
-        BackToWindowsContainer.CornerRadius = new CornerRadius(Math.Clamp(cellSize * 0.16, 6, 16));
         BackToWindowsButton.Padding = new Thickness(horizontalPadding, verticalPadding);
         BackToWindowsButton.FontSize = Math.Clamp(cellSize * 0.22, 8, 22);
         BackToWindowsButton.MinHeight = taskbarCell;
         BackToWindowsButton.MinWidth = Math.Clamp(cellSize * 2.3, 90, 320);
 
-        OpenSettingsContainer.Margin = new Thickness(0);
+        OpenSettingsButton.Margin = new Thickness(0);
-        OpenSettingsContainer.CornerRadius = new CornerRadius(Math.Clamp(cellSize * 0.16, 6, 16));
-        OpenSettingsContainer.Width = taskbarCell;
-        OpenSettingsContainer.Height = taskbarCell;
-        OpenSettingsButton.Width = taskbarCell;
         OpenSettingsButton.Height = taskbarCell;
-        OpenSettingsButton.Padding = new Thickness(Math.Clamp(taskbarCell * 0.2, 4, 12));
+        OpenSettingsButton.MinHeight = taskbarCell;
+
+        if (_isSettingsOpen)
+        {
+            OpenSettingsButton.Width = double.NaN;
+            OpenSettingsButton.MinWidth = Math.Clamp(cellSize * 2.3, 120, 340);
+            OpenSettingsButton.Padding = new Thickness(horizontalPadding, verticalPadding);
+        }
+        else
+        {
+            OpenSettingsButton.Width = taskbarCell;
+            OpenSettingsButton.MinWidth = taskbarCell;
+            OpenSettingsButton.Padding = new Thickness(Math.Clamp(taskbarCell * 0.2, 4, 12));
+        }
+    }
+
+    private void UpdateSettingsViewportInsets(double cellSize)
+    {
+        if (SettingsBackdropOverlay is null || SettingsContentPanel is null)
+        {
+            return;
+        }
+
+        var clampedCell = Math.Max(1, cellSize);
+        var horizontalInset = Math.Clamp(clampedCell * 0.45, 12, 64);
+        var verticalGap = Math.Clamp(clampedCell * 0.16, 6, 18);
+        var topInset = clampedCell + verticalGap;
+        var bottomInset = clampedCell + verticalGap;
+        var inset = new Thickness(horizontalInset, topInset, horizontalInset, bottomInset);
+
+        SettingsBackdropOverlay.Margin = inset;
+        SettingsContentPanel.Margin = inset;
     }
 
     private void UpdateWallpaperPreviewLayout()
@@ -333,6 +373,14 @@ public partial class MainWindow : Window
             return;
         }
 
+        if (_isUpdatingWallpaperPreviewLayout)
+        {
+            return;
+        }
+
+        _isUpdatingWallpaperPreviewLayout = true;
+        try
+        {
         var desktopWidth = Math.Max(1, DesktopHost.Bounds.Width);
         var desktopHeight = Math.Max(1, DesktopHost.Bounds.Height);
         var aspectRatio = desktopWidth / desktopHeight;
@@ -349,7 +397,7 @@ public partial class MainWindow : Window
         availableWidth = Math.Max(1, availableWidth);
         availableHeight = Math.Max(1, availableHeight);
 
-        var previewWidth = availableWidth;
+        var previewWidth = Math.Min(availableWidth, WallpaperPreviewMaxWidth);
         var previewHeight = previewWidth / aspectRatio;
         if (previewHeight > availableHeight)
         {
@@ -357,8 +405,16 @@ public partial class MainWindow : Window
             previewWidth = previewHeight * aspectRatio;
         }
 
-        WallpaperPreviewFrame.Width = previewWidth;
+        if (Math.Abs(WallpaperPreviewFrame.Width - previewWidth) > 0.5)
-        WallpaperPreviewFrame.Height = previewHeight;
+        {
+            WallpaperPreviewFrame.Width = previewWidth;
+        }
+
+        if (Math.Abs(WallpaperPreviewFrame.Height - previewHeight) > 0.5)
+        {
+            WallpaperPreviewFrame.Height = previewHeight;
+        }
+
         WallpaperPreviewClockTextBlock.Text = DateTime.Now.ToString("HH:mm");
 
         var gridMetrics = CalculateGridMetrics(previewWidth, previewHeight, _targetShortSideCells);
@@ -399,6 +455,11 @@ public partial class MainWindow : Window
         ApplyTopStatusComponentVisibility();
         ApplyTaskbarActionVisibility(GetCurrentTaskbarContext());
         ApplyPreviewWidgetSizing(gridMetrics.CellSize);
+        }
+        finally
+        {
+            _isUpdatingWallpaperPreviewLayout = false;
+        }
     }
 
     private void ApplyPreviewWidgetSizing(double cellSize)
@@ -412,16 +473,10 @@ public partial class MainWindow : Window
 
         WallpaperPreviewClockTextBlock.FontSize = Math.Clamp(cellSize * 0.30, 6, 18);
         WallpaperPreviewBackButtonTextBlock.FontSize = Math.Clamp(cellSize * 0.19, 5, 13);
-        WallpaperPreviewBackButtonContainer.MinHeight = previewTaskbarCell;
+        WallpaperPreviewBackButtonVisual.MinHeight = previewTaskbarCell;
-        WallpaperPreviewBackButtonContainer.MinWidth = Math.Clamp(cellSize * 2.1, 30, 120);
+        WallpaperPreviewBackButtonVisual.MinWidth = Math.Clamp(cellSize * 2.1, 30, 120);
-        WallpaperPreviewSettingsButtonContainer.Width = previewTaskbarCell;
-        WallpaperPreviewSettingsButtonContainer.Height = previewTaskbarCell;
         WallpaperPreviewSettingsButtonIcon.Width = Math.Clamp(previewTaskbarCell * 0.42, 6, 14);
         WallpaperPreviewSettingsButtonIcon.Height = Math.Clamp(previewTaskbarCell * 0.42, 6, 14);
-
-        var cornerRadius = new CornerRadius(Math.Clamp(cellSize * 0.12, 3, 10));
-        WallpaperPreviewBackButtonContainer.CornerRadius = cornerRadius;
-        WallpaperPreviewSettingsButtonContainer.CornerRadius = cornerRadius;
     }
 
     private void OnMinimizeClick(object? sender, RoutedEventArgs e)
@@ -450,4 +505,3 @@ public partial class MainWindow : Window
         });
     }
 }
-