0.4.9.3

内存泄露问题解决

.github/workflows/release.yml

@@ -275,6 +275,8 @@ jobs:
           package_name="LanMountainDesktop"
           package_version="${version}"
           arch="amd64"
+          desktop_template="LanMountainDesktop/packaging/linux/LanMountainDesktop.desktop"
+          icon_source="LanMountainDesktop/packaging/linux/lanmountaindesktop.png"
           
           # Verify source directory exists
           if [ ! -d "$source" ]; then
@@ -288,6 +290,7 @@ jobs:
           mkdir -p "build-deb/usr/local/bin"
           mkdir -p "build-deb/usr/share/applications"
           mkdir -p "build-deb/usr/share/pixmaps"
+          mkdir -p "build-deb/usr/share/icons/hicolor/256x256/apps"
           
           # Copy application files
           cp -r "$source"/* "build-deb/usr/local/bin/"
@@ -300,6 +303,31 @@ jobs:
             echo "Error: DEB package is empty after copy"
             exit 1
           fi
+
+          if [ ! -f "$desktop_template" ] || [ ! -f "$icon_source" ]; then
+            echo "Error: Linux desktop resources are missing"
+            ls -la "LanMountainDesktop/packaging/linux" || true
+            exit 1
+          fi
+
+          sed \
+            -e "s|@@EXEC@@|/usr/local/bin/LanMountainDesktop|g" \
+            -e "s|@@ICON@@|lanmountaindesktop|g" \
+            "$desktop_template" > "build-deb/usr/share/applications/LanMountainDesktop.desktop"
+
+          cp "$icon_source" "build-deb/usr/share/pixmaps/lanmountaindesktop.png"
+          cp "$icon_source" "build-deb/usr/share/icons/hicolor/256x256/apps/lanmountaindesktop.png"
+
+          {
+            printf '%s\n' '#!/bin/sh'
+            printf '%s\n' 'set -e'
+            printf '%s\n' 'if command -v update-desktop-database >/dev/null 2>&1; then'
+            printf '%s\n' '  update-desktop-database /usr/share/applications >/dev/null 2>&1 || true'
+            printf '%s\n' 'fi'
+            printf '%s\n' 'if command -v gtk-update-icon-cache >/dev/null 2>&1; then'
+            printf '%s\n' '  gtk-update-icon-cache /usr/share/icons/hicolor >/dev/null 2>&1 || true'
+            printf '%s\n' 'fi'
+          } > "build-deb/DEBIAN/postinst"
           
           # Create control file (NOTE: No leading spaces in control file)
           {
@@ -313,6 +341,10 @@ jobs:
           
           # Set proper permissions
           chmod 755 "build-deb/usr/local/bin/LanMountainDesktop" || chmod 755 "build-deb/usr/local/bin"/*
+          chmod 644 "build-deb/usr/share/applications/LanMountainDesktop.desktop"
+          chmod 644 "build-deb/usr/share/pixmaps/lanmountaindesktop.png"
+          chmod 644 "build-deb/usr/share/icons/hicolor/256x256/apps/lanmountaindesktop.png"
+          chmod 755 "build-deb/DEBIAN/postinst"
           
           # Create DEB file
           if dpkg-deb --build "build-deb" "${package_name}_${package_version}_${arch}.deb"; then

LanMountainDesktop/App.axaml.cs

@@ -24,6 +24,8 @@ public partial class App : Application
 
     public override void OnFrameworkInitializationCompleted()
     {
+        LinuxDesktopEntryInstaller.EnsureInstalled();
+
         if (ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktop)
         {
             // Avoid duplicate validations from both Avalonia and the CommunityToolkit. 

LanMountainDesktop/Localization/en-US.json

@@ -251,7 +251,9 @@
     "desktop.page_index_format":  "Desktop {0}",
     "launcher.title":  "App Launcher",
     "launcher.subtitle":  "Apps and folders from Windows Start Menu",
+    "launcher.subtitle_linux":  "Installed apps discovered from Linux desktop entries",
     "launcher.empty":  "No Start Menu entries found.",
+    "launcher.empty_linux":  "No Linux desktop entries were found.",
     "launcher.empty_folder":  "This folder is empty.",
     "launcher.folder_items_format":  "{0} apps",
     "launcher.context.hide_icon":  "Hide Icon",

LanMountainDesktop/Localization/zh-CN.json

@@ -251,7 +251,9 @@
     "desktop.page_index_format":  "桌面 {0}",
     "launcher.title":  "应用启动台",
     "launcher.subtitle":  "按 Windows 开始菜单结构显示所有应用与文件夹",
+    "launcher.subtitle_linux":  "显示从 Linux .desktop 条目扫描到的已安装应用",
     "launcher.empty":  "未找到开始菜单条目。",
+    "launcher.empty_linux":  "未找到 Linux .desktop 应用条目。",
     "launcher.empty_folder":  "此文件夹为空。",
     "launcher.folder_items_format":  "{0} 个应用",
     "launcher.context.hide_icon":  "隐藏图标",

LanMountainDesktop/Models/StartMenuAppEntry.cs

@@ -1,4 +1,6 @@
-namespace LanMountainDesktop.Models;
+using System.Collections.Generic;
+
+namespace LanMountainDesktop.Models;
 
 public sealed class StartMenuAppEntry
 {
@@ -9,4 +11,10 @@ public sealed class StartMenuAppEntry
     public required string RelativePath { get; init; }
 
     public byte[]? IconPngBytes { get; init; }
+
+    public string? LaunchExecutable { get; init; }
+
+    public IReadOnlyList<string> LaunchArguments { get; init; } = [];
+
+    public string? WorkingDirectory { get; init; }
 }

LanMountainDesktop/Services/ClassIslandScheduleDataService.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.Globalization;
 using System.IO;
@@ -39,7 +39,7 @@ public sealed class ClassIslandScheduleDataService : IClassIslandScheduleDataSer
     };
 
     private static readonly IDeserializer CsesDeserializer = new DeserializerBuilder()
-        .WithNamingConvention(CamelCaseNamingConvention.Instance)
+        .WithNamingConvention(UnderscoredNamingConvention.Instance)
         .IgnoreUnmatchedProperties()
         .Build();
 

LanMountainDesktop/Services/LinuxDesktopEntryInstaller.cs

@@ -0,0 +1,192 @@
+using System;
+using System.Diagnostics;
+using System.IO;
+using System.Text;
+
+namespace LanMountainDesktop.Services;
+
+internal static class LinuxDesktopEntryInstaller
+{
+    private const string DesktopFileName = "LanMountainDesktop.desktop";
+    private const string IconFileName = "lanmountaindesktop.png";
+    private const string IconName = "lanmountaindesktop";
+
+    public static void EnsureInstalled()
+    {
+        if (!OperatingSystem.IsLinux())
+        {
+            return;
+        }
+
+        try
+        {
+            var executablePath = ResolveExecutablePath();
+            if (string.IsNullOrWhiteSpace(executablePath))
+            {
+                return;
+            }
+
+            var dataHome = ResolveDataHome();
+            if (string.IsNullOrWhiteSpace(dataHome))
+            {
+                return;
+            }
+
+            var applicationsDir = Path.Combine(dataHome, "applications");
+            var iconDir = Path.Combine(dataHome, "icons", "hicolor", "256x256", "apps");
+
+            Directory.CreateDirectory(applicationsDir);
+            Directory.CreateDirectory(iconDir);
+
+            var desktopTargetPath = Path.Combine(applicationsDir, DesktopFileName);
+            var iconTargetPath = Path.Combine(iconDir, IconFileName);
+
+            TryCopyBundledIcon(iconTargetPath);
+
+            var desktopEntryContent = BuildDesktopEntryContent(executablePath);
+            WriteFileIfChanged(desktopTargetPath, desktopEntryContent);
+
+            TryRunCommand("chmod", "+x", executablePath);
+            TryRunCommand("chmod", "+x", desktopTargetPath);
+            TryRunCommand("update-desktop-database", applicationsDir);
+            TryRunCommand("gtk-update-icon-cache", Path.Combine(dataHome, "icons", "hicolor"));
+        }
+        catch
+        {
+            // Keep startup resilient if desktop integration fails.
+        }
+    }
+
+    private static string ResolveExecutablePath()
+    {
+        var processPath = Environment.ProcessPath;
+        if (!string.IsNullOrWhiteSpace(processPath))
+        {
+            return processPath;
+        }
+
+        var commandLineArgs = Environment.GetCommandLineArgs();
+        if (commandLineArgs.Length > 0 && !string.IsNullOrWhiteSpace(commandLineArgs[0]))
+        {
+            return commandLineArgs[0];
+        }
+
+        return string.Empty;
+    }
+
+    private static string ResolveDataHome()
+    {
+        var dataHome = Environment.GetEnvironmentVariable("XDG_DATA_HOME");
+        if (!string.IsNullOrWhiteSpace(dataHome))
+        {
+            return dataHome.Trim();
+        }
+
+        var homePath = Environment.GetFolderPath(Environment.SpecialFolder.UserProfile);
+        if (string.IsNullOrWhiteSpace(homePath))
+        {
+            return string.Empty;
+        }
+
+        return Path.Combine(homePath, ".local", "share");
+    }
+
+    private static void TryCopyBundledIcon(string iconTargetPath)
+    {
+        foreach (var candidatePath in EnumerateIconSourceCandidates())
+        {
+            try
+            {
+                if (!File.Exists(candidatePath))
+                {
+                    continue;
+                }
+
+                File.Copy(candidatePath, iconTargetPath, overwrite: true);
+                return;
+            }
+            catch
+            {
+                // Ignore failures and continue trying fallbacks.
+            }
+        }
+    }
+
+    private static string[] EnumerateIconSourceCandidates()
+    {
+        var baseDirectory = AppContext.BaseDirectory;
+        return
+        [
+            Path.Combine(baseDirectory, "share", "icons", "hicolor", "256x256", "apps", IconFileName),
+            Path.Combine(baseDirectory, IconFileName)
+        ];
+    }
+
+    private static string BuildDesktopEntryContent(string executablePath)
+    {
+        var escapedExecutablePath = executablePath.Replace("\"", "\\\"", StringComparison.Ordinal);
+        return
+            "[Desktop Entry]\n" +
+            "Type=Application\n" +
+            "Version=1.0\n" +
+            "Name=LanMountainDesktop\n" +
+            "Comment=LanMountainDesktop desktop shell\n" +
+            $"Exec=\"{escapedExecutablePath}\" %U\n" +
+            $"Icon={IconName}\n" +
+            "Terminal=false\n" +
+            "Categories=Utility;Education;\n" +
+            "StartupWMClass=LanMountainDesktop\n";
+    }
+
+    private static void WriteFileIfChanged(string filePath, string content)
+    {
+        try
+        {
+            if (File.Exists(filePath))
+            {
+                var existing = File.ReadAllText(filePath);
+                if (string.Equals(existing, content, StringComparison.Ordinal))
+                {
+                    return;
+                }
+            }
+        }
+        catch
+        {
+            // Fall through to attempt writing the content.
+        }
+
+        File.WriteAllText(filePath, content, new UTF8Encoding(encoderShouldEmitUTF8Identifier: false));
+    }
+
+    private static void TryRunCommand(string fileName, params string[] arguments)
+    {
+        try
+        {
+            var startInfo = new ProcessStartInfo
+            {
+                FileName = fileName,
+                UseShellExecute = false,
+                RedirectStandardError = true,
+                RedirectStandardOutput = true
+            };
+
+            foreach (var argument in arguments)
+            {
+                startInfo.ArgumentList.Add(argument);
+            }
+
+            using var process = Process.Start(startInfo);
+            if (process is null)
+            {
+                return;
+            }
+
+            _ = process.WaitForExit(2_500);
+        }
+        catch
+        {
+            // Ignore missing command or update failures.
+        }
+    }
+}

LanMountainDesktop/Services/LinuxDesktopEntryService.cs

@@ -0,0 +1,371 @@
+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.IO;
+using System.Linq;
+using System.Text;
+using System.Text.RegularExpressions;
+using LanMountainDesktop.Models;
+
+namespace LanMountainDesktop.Services;
+
+public sealed class LinuxDesktopEntryService
+{
+    private static readonly Regex FieldCodeRegex =
+        new(@"%[fFuUdDnNickvm]", RegexOptions.Compiled);
+
+    public StartMenuFolderNode Load()
+    {
+        var root = new StartMenuFolderNode("All Apps", string.Empty);
+        if (!OperatingSystem.IsLinux())
+        {
+            return root;
+        }
+
+        var seenDesktopIds = new HashSet<string>(StringComparer.OrdinalIgnoreCase);
+        foreach (var applicationsRoot in EnumerateApplicationsRoots())
+        {
+            foreach (var desktopFilePath in EnumerateDesktopFilesSafe(applicationsRoot))
+            {
+                if (!TryParseDesktopEntry(desktopFilePath, applicationsRoot, out var appEntry))
+                {
+                    continue;
+                }
+
+                if (seenDesktopIds.Add(appEntry.RelativePath))
+                {
+                    root.Apps.Add(appEntry);
+                }
+            }
+        }
+
+        root.Apps.Sort((left, right) =>
+            string.Compare(left.DisplayName, right.DisplayName, CultureInfo.CurrentCulture, CompareOptions.IgnoreCase));
+        return root;
+    }
+
+    private static IEnumerable<string> EnumerateApplicationsRoots()
+    {
+        var homeDirectory = Environment.GetFolderPath(Environment.SpecialFolder.UserProfile);
+        var dataHome = Environment.GetEnvironmentVariable("XDG_DATA_HOME");
+        if (string.IsNullOrWhiteSpace(dataHome) && !string.IsNullOrWhiteSpace(homeDirectory))
+        {
+            dataHome = Path.Combine(homeDirectory, ".local", "share");
+        }
+
+        var dataDirs = (Environment.GetEnvironmentVariable("XDG_DATA_DIRS") ?? "/usr/local/share:/usr/share")
+            .Split(':', StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries);
+
+        var candidates = new List<string>();
+        if (!string.IsNullOrWhiteSpace(dataHome))
+        {
+            candidates.Add(Path.Combine(dataHome, "applications"));
+        }
+
+        foreach (var dataDir in dataDirs)
+        {
+            candidates.Add(Path.Combine(dataDir, "applications"));
+        }
+
+        if (!string.IsNullOrWhiteSpace(homeDirectory))
+        {
+            candidates.Add(Path.Combine(homeDirectory, ".local", "share", "flatpak", "exports", "share", "applications"));
+        }
+
+        candidates.Add("/var/lib/flatpak/exports/share/applications");
+        candidates.Add("/var/lib/snapd/desktop/applications");
+
+        return candidates
+            .Where(path => !string.IsNullOrWhiteSpace(path) && Directory.Exists(path))
+            .Distinct(StringComparer.OrdinalIgnoreCase);
+    }
+
+    private static IEnumerable<string> EnumerateDesktopFilesSafe(string applicationsRoot)
+    {
+        try
+        {
+            return Directory.EnumerateFiles(applicationsRoot, "*.desktop", SearchOption.AllDirectories);
+        }
+        catch
+        {
+            return Array.Empty<string>();
+        }
+    }
+
+    private static bool TryParseDesktopEntry(string desktopFilePath, string applicationsRoot, out StartMenuAppEntry appEntry)
+    {
+        appEntry = null!;
+
+        Dictionary<string, string> fields;
+        try
+        {
+            fields = ReadDesktopEntryFields(desktopFilePath);
+        }
+        catch
+        {
+            return false;
+        }
+
+        if (!fields.TryGetValue("Type", out var entryType) ||
+            !string.Equals(entryType, "Application", StringComparison.OrdinalIgnoreCase) ||
+            GetBooleanField(fields, "NoDisplay") ||
+            GetBooleanField(fields, "Hidden"))
+        {
+            return false;
+        }
+
+        var displayName = GetPreferredName(fields);
+        if (string.IsNullOrWhiteSpace(displayName))
+        {
+            return false;
+        }
+
+        if (!fields.TryGetValue("Exec", out var execValue) ||
+            !TryParseExec(execValue, out var launchExecutable, out var launchArguments))
+        {
+            return false;
+        }
+
+        if (fields.TryGetValue("TryExec", out var tryExecValue) &&
+            !string.IsNullOrWhiteSpace(tryExecValue) &&
+            !CommandExists(tryExecValue))
+        {
+            return false;
+        }
+
+        var desktopFileId = BuildDesktopFileId(desktopFilePath, applicationsRoot);
+        var iconValue = fields.TryGetValue("Icon", out var iconFieldValue)
+            ? iconFieldValue
+            : string.Empty;
+        var workingDirectory = Path.IsPathRooted(launchExecutable)
+            ? Path.GetDirectoryName(launchExecutable)
+            : null;
+
+        appEntry = new StartMenuAppEntry
+        {
+            DisplayName = displayName.Trim(),
+            FilePath = desktopFilePath,
+            RelativePath = desktopFileId,
+            IconPngBytes = LinuxIconService.TryGetIconPngBytes(iconValue, Path.GetDirectoryName(desktopFilePath)),
+            LaunchExecutable = launchExecutable,
+            LaunchArguments = launchArguments,
+            WorkingDirectory = string.IsNullOrWhiteSpace(workingDirectory) ? null : workingDirectory
+        };
+        return true;
+    }
+
+    private static Dictionary<string, string> ReadDesktopEntryFields(string desktopFilePath)
+    {
+        var fields = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase);
+        var inDesktopEntrySection = false;
+        foreach (var rawLine in File.ReadLines(desktopFilePath))
+        {
+            var line = rawLine.Trim();
+            if (string.IsNullOrWhiteSpace(line) || line.StartsWith('#'))
+            {
+                continue;
+            }
+
+            if (line.StartsWith('[') && line.EndsWith(']'))
+            {
+                inDesktopEntrySection = string.Equals(line, "[Desktop Entry]", StringComparison.OrdinalIgnoreCase);
+                continue;
+            }
+
+            if (!inDesktopEntrySection)
+            {
+                continue;
+            }
+
+            var separatorIndex = line.IndexOf('=');
+            if (separatorIndex <= 0 || separatorIndex >= line.Length - 1)
+            {
+                continue;
+            }
+
+            var key = line[..separatorIndex].Trim();
+            var value = line[(separatorIndex + 1)..].Trim();
+            fields[key] = value;
+        }
+
+        return fields;
+    }
+
+    private static bool GetBooleanField(IReadOnlyDictionary<string, string> fields, string key)
+    {
+        return fields.TryGetValue(key, out var value) &&
+               bool.TryParse(value, out var result) &&
+               result;
+    }
+
+    private static string GetPreferredName(IReadOnlyDictionary<string, string> fields)
+    {
+        if (TryGetLocalizedField(fields, "Name", out var localizedName))
+        {
+            return localizedName;
+        }
+
+        return fields.TryGetValue("Name", out var fallbackName)
+            ? fallbackName
+            : string.Empty;
+    }
+
+    private static bool TryGetLocalizedField(IReadOnlyDictionary<string, string> fields, string baseKey, out string value)
+    {
+        value = string.Empty;
+        var uiCulture = CultureInfo.CurrentUICulture;
+        var candidates = new[]
+        {
+            $"{baseKey}[{uiCulture.Name}]",
+            $"{baseKey}[{uiCulture.TwoLetterISOLanguageName}]"
+        };
+
+        foreach (var key in candidates)
+        {
+            if (fields.TryGetValue(key, out var localizedValue) &&
+                !string.IsNullOrWhiteSpace(localizedValue))
+            {
+                value = localizedValue;
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    private static string BuildDesktopFileId(string desktopFilePath, string applicationsRoot)
+    {
+        var relativePath = Path.GetRelativePath(applicationsRoot, desktopFilePath)
+            .Replace(Path.DirectorySeparatorChar, '-')
+            .Replace(Path.AltDirectorySeparatorChar, '-');
+
+        return relativePath.Trim();
+    }
+
+    private static bool TryParseExec(string execValue, out string launchExecutable, out List<string> launchArguments)
+    {
+        launchExecutable = string.Empty;
+        launchArguments = [];
+
+        var tokens = TokenizeExec(execValue);
+        if (tokens.Count == 0)
+        {
+            return false;
+        }
+
+        var cleanedTokens = new List<string>(tokens.Count);
+        foreach (var token in tokens)
+        {
+            if (string.IsNullOrWhiteSpace(token))
+            {
+                continue;
+            }
+
+            var normalizedToken = token.Replace("%%", "%", StringComparison.Ordinal);
+            if (normalizedToken.Length == 2 && normalizedToken[0] == '%')
+            {
+                continue;
+            }
+
+            normalizedToken = FieldCodeRegex.Replace(normalizedToken, string.Empty).Trim();
+            if (string.IsNullOrWhiteSpace(normalizedToken))
+            {
+                continue;
+            }
+
+            cleanedTokens.Add(normalizedToken);
+        }
+
+        if (cleanedTokens.Count == 0)
+        {
+            return false;
+        }
+
+        launchExecutable = cleanedTokens[0];
+        launchArguments = cleanedTokens.Skip(1).ToList();
+        return true;
+    }
+
+    private static List<string> TokenizeExec(string execValue)
+    {
+        var tokens = new List<string>();
+        var current = new StringBuilder();
+        var inQuotes = false;
+        char quoteChar = '\0';
+
+        foreach (var c in execValue)
+        {
+            if ((c == '"' || c == '\'') &&
+                (!inQuotes || quoteChar == c))
+            {
+                if (inQuotes)
+                {
+                    inQuotes = false;
+                    quoteChar = '\0';
+                }
+                else
+                {
+                    inQuotes = true;
+                    quoteChar = c;
+                }
+
+                continue;
+            }
+
+            if (char.IsWhiteSpace(c) && !inQuotes)
+            {
+                if (current.Length > 0)
+                {
+                    tokens.Add(current.ToString());
+                    current.Clear();
+                }
+
+                continue;
+            }
+
+            current.Append(c);
+        }
+
+        if (current.Length > 0)
+        {
+            tokens.Add(current.ToString());
+        }
+
+        return tokens;
+    }
+
+    private static bool CommandExists(string command)
+    {
+        var trimmedCommand = command.Trim();
+        if (string.IsNullOrWhiteSpace(trimmedCommand))
+        {
+            return false;
+        }
+
+        if (Path.IsPathRooted(trimmedCommand))
+        {
+            return File.Exists(trimmedCommand);
+        }
+
+        var pathEntries = (Environment.GetEnvironmentVariable("PATH") ?? string.Empty)
+            .Split(Path.PathSeparator, StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries);
+
+        foreach (var pathEntry in pathEntries)
+        {
+            try
+            {
+                var candidate = Path.Combine(pathEntry, trimmedCommand);
+                if (File.Exists(candidate))
+                {
+                    return true;
+                }
+            }
+            catch
+            {
+                // Ignore malformed PATH entries.
+            }
+        }
+
+        return false;
+    }
+}

LanMountainDesktop/Services/LinuxIconService.cs

@@ -0,0 +1,214 @@
+using System;
+using System.Collections.Concurrent;
+using System.Collections.Generic;
+using System.Globalization;
+using System.IO;
+using System.Linq;
+using System.Text.RegularExpressions;
+
+namespace LanMountainDesktop.Services;
+
+internal static class LinuxIconService
+{
+    private static readonly string[] SupportedRasterExtensions =
+    [
+        ".png",
+        ".ico"
+    ];
+
+    private static readonly Regex SizeDirectoryRegex =
+        new(@"(?<size>\d{1,4})x\d{1,4}", RegexOptions.IgnoreCase | RegexOptions.Compiled);
+
+    private static readonly ConcurrentDictionary<string, string?> IconPathCache = new(StringComparer.OrdinalIgnoreCase);
+
+    public static byte[]? TryGetIconPngBytes(string? iconKey, string? desktopFileDirectory = null)
+    {
+        if (!OperatingSystem.IsLinux() || string.IsNullOrWhiteSpace(iconKey))
+        {
+            return null;
+        }
+
+        foreach (var candidatePath in ResolveIconCandidates(iconKey.Trim(), desktopFileDirectory))
+        {
+            if (TryReadIconBytes(candidatePath, out var bytes))
+            {
+                return bytes;
+            }
+        }
+
+        return null;
+    }
+
+    private static IEnumerable<string> ResolveIconCandidates(string iconKey, string? desktopFileDirectory)
+    {
+        if (Path.HasExtension(iconKey))
+        {
+            var directPath = ExpandHome(iconKey);
+            if (Path.IsPathRooted(directPath))
+            {
+                yield return directPath;
+            }
+            else if (!string.IsNullOrWhiteSpace(desktopFileDirectory))
+            {
+                yield return Path.GetFullPath(Path.Combine(desktopFileDirectory, directPath));
+            }
+
+            yield break;
+        }
+
+        var resolvedThemePath = ResolveThemedIconPath(iconKey);
+        if (!string.IsNullOrWhiteSpace(resolvedThemePath))
+        {
+            yield return resolvedThemePath;
+        }
+    }
+
+    private static string? ResolveThemedIconPath(string iconName)
+    {
+        return IconPathCache.GetOrAdd(iconName, static key => FindBestMatchingIconPath(key));
+    }
+
+    private static string? FindBestMatchingIconPath(string iconName)
+    {
+        var candidates = new List<(string Path, int Score)>();
+        foreach (var iconRoot in EnumerateIconRoots())
+        {
+            foreach (var extension in SupportedRasterExtensions)
+            {
+                foreach (var candidatePath in EnumerateFilesSafe(iconRoot, iconName + extension))
+                {
+                    candidates.Add((candidatePath, ScoreIconPath(candidatePath)));
+                }
+            }
+        }
+
+        return candidates
+            .OrderByDescending(candidate => candidate.Score)
+            .ThenBy(candidate => candidate.Path.Length)
+            .Select(candidate => candidate.Path)
+            .FirstOrDefault();
+    }
+
+    private static IEnumerable<string> EnumerateIconRoots()
+    {
+        var homeDirectory = Environment.GetFolderPath(Environment.SpecialFolder.UserProfile);
+        var dataHome = Environment.GetEnvironmentVariable("XDG_DATA_HOME");
+        if (string.IsNullOrWhiteSpace(dataHome) && !string.IsNullOrWhiteSpace(homeDirectory))
+        {
+            dataHome = Path.Combine(homeDirectory, ".local", "share");
+        }
+
+        var dataDirs = (Environment.GetEnvironmentVariable("XDG_DATA_DIRS") ?? "/usr/local/share:/usr/share")
+            .Split(':', StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries);
+
+        var candidates = new List<string>();
+        if (!string.IsNullOrWhiteSpace(dataHome))
+        {
+            candidates.Add(Path.Combine(dataHome, "icons"));
+            candidates.Add(Path.Combine(dataHome, "pixmaps"));
+        }
+
+        foreach (var dataDir in dataDirs)
+        {
+            candidates.Add(Path.Combine(dataDir, "icons"));
+            candidates.Add(Path.Combine(dataDir, "pixmaps"));
+        }
+
+        if (!string.IsNullOrWhiteSpace(homeDirectory))
+        {
+            candidates.Add(Path.Combine(homeDirectory, ".icons"));
+            candidates.Add(Path.Combine(homeDirectory, ".local", "share", "flatpak", "exports", "share", "icons"));
+        }
+
+        candidates.Add("/var/lib/flatpak/exports/share/icons");
+        candidates.Add("/var/lib/snapd/desktop/icons");
+
+        return candidates
+            .Where(path => !string.IsNullOrWhiteSpace(path) && Directory.Exists(path))
+            .Distinct(StringComparer.OrdinalIgnoreCase);
+    }
+
+    private static IEnumerable<string> EnumerateFilesSafe(string rootPath, string fileName)
+    {
+        try
+        {
+            return Directory.EnumerateFiles(rootPath, fileName, SearchOption.AllDirectories);
+        }
+        catch
+        {
+            return Array.Empty<string>();
+        }
+    }
+
+    private static bool TryReadIconBytes(string filePath, out byte[] bytes)
+    {
+        bytes = [];
+        try
+        {
+            var extension = Path.GetExtension(filePath);
+            if (!SupportedRasterExtensions.Contains(extension, StringComparer.OrdinalIgnoreCase) ||
+                !File.Exists(filePath))
+            {
+                return false;
+            }
+
+            bytes = File.ReadAllBytes(filePath);
+            return bytes.Length > 0;
+        }
+        catch
+        {
+            return false;
+        }
+    }
+
+    private static int ScoreIconPath(string filePath)
+    {
+        var score = 0;
+        var extension = Path.GetExtension(filePath);
+        if (extension.Equals(".png", StringComparison.OrdinalIgnoreCase))
+        {
+            score += 4_000;
+        }
+        else if (extension.Equals(".ico", StringComparison.OrdinalIgnoreCase))
+        {
+            score += 2_000;
+        }
+
+        if (filePath.Contains($"{Path.DirectorySeparatorChar}hicolor{Path.DirectorySeparatorChar}", StringComparison.OrdinalIgnoreCase))
+        {
+            score += 8_000;
+        }
+
+        if (filePath.Contains($"{Path.DirectorySeparatorChar}apps{Path.DirectorySeparatorChar}", StringComparison.OrdinalIgnoreCase))
+        {
+            score += 1_000;
+        }
+
+        var match = SizeDirectoryRegex.Match(filePath);
+        if (match.Success &&
+            int.TryParse(match.Groups["size"].Value, NumberStyles.Integer, CultureInfo.InvariantCulture, out var size))
+        {
+            score += Math.Min(size, 512);
+        }
+
+        return score;
+    }
+
+    private static string ExpandHome(string path)
+    {
+        if (!path.StartsWith("~", StringComparison.Ordinal))
+        {
+            return path;
+        }
+
+        var homeDirectory = Environment.GetFolderPath(Environment.SpecialFolder.UserProfile);
+        if (string.IsNullOrWhiteSpace(homeDirectory))
+        {
+            return path;
+        }
+
+        return path.Length == 1
+            ? homeDirectory
+            : Path.Combine(homeDirectory, path[2..]);
+    }
+}

LanMountainDesktop/Views/Components/BaiduHotSearchWidget.axaml.cs

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

LanMountainDesktop/Views/Components/BilibiliHotSearchWidget.axaml.cs

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

LanMountainDesktop/Views/Components/BrowserWidget.axaml.cs

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

LanMountainDesktop/Views/Components/CnrDailyNewsWidget.axaml.cs

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

LanMountainDesktop/Views/Components/DailyPoetryWidget.axaml

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

LanMountainDesktop/Views/Components/DailyPoetryWidget.axaml.cs

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

LanMountainDesktop/Views/Components/DailyWord2x2Widget.axaml.cs

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

LanMountainDesktop/Views/Components/DailyWordWidget.axaml.cs

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

LanMountainDesktop/Views/Components/IfengNewsWidget.axaml.cs

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

LanMountainDesktop/Views/Components/RecordingWidget.axaml.cs

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

LanMountainDesktop/Views/Components/Stcn24ForumWidget.axaml.cs

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

LanMountainDesktop/Views/Components/StudyEnvironmentWidget.axaml.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Globalization;
 using Avalonia;
 using Avalonia.Controls;
@@ -9,7 +9,7 @@ using LanMountainDesktop.Services;
 
 namespace LanMountainDesktop.Views.Components;
 
-public partial class StudyEnvironmentWidget : UserControl, IDesktopComponentWidget, IDesktopPageVisibilityAwareComponentWidget
+public partial class StudyEnvironmentWidget : UserControl, IDesktopComponentWidget, IDesktopPageVisibilityAwareComponentWidget, IDisposable
 {
     private readonly IStudyAnalyticsService _studyAnalyticsService = StudyAnalyticsServiceFactory.CreateDefault();
     private readonly StudyAnalyticsMonitoringLeaseCoordinator _monitoringLeaseCoordinator = StudyAnalyticsMonitoringLeaseCoordinatorFactory.CreateDefault();
@@ -27,6 +27,7 @@ public partial class StudyEnvironmentWidget : UserControl, IDesktopComponentWidg
     private string _languageCode = "zh-CN";
     private bool _isAttached;
     private bool _isOnActivePage = true;
+    private bool _isDisposed;
     private IDisposable? _monitoringLease;
 
     public StudyEnvironmentWidget()
@@ -329,4 +330,23 @@ public partial class StudyEnvironmentWidget : UserControl, IDesktopComponentWidg
 
         return CreateBrush(fallbackHex);
     }
+
+    public void Dispose()
+    {
+        if (_isDisposed)
+        {
+            return;
+        }
+
+        _isDisposed = true;
+
+        _uiTimer.Stop();
+        _uiTimer.Tick -= OnUiTimerTick;
+        AttachedToVisualTree -= OnAttachedToVisualTree;
+        DetachedFromVisualTree -= OnDetachedFromVisualTree;
+        SizeChanged -= OnSizeChanged;
+
+        _monitoringLease?.Dispose();
+        _monitoringLease = null;
+    }
 }

LanMountainDesktop/Views/Components/StudyNoiseDistributionScatterChartControl.cs

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

LanMountainDesktop/Views/Components/StudyNoiseDistributionWidget.axaml.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.Globalization;
 using System.Linq;
@@ -12,7 +12,7 @@ using LanMountainDesktop.Theme;
 
 namespace LanMountainDesktop.Views.Components;
 
-public partial class StudyNoiseDistributionWidget : UserControl, IDesktopComponentWidget, IDesktopPageVisibilityAwareComponentWidget
+public partial class StudyNoiseDistributionWidget : UserControl, IDesktopComponentWidget, IDesktopPageVisibilityAwareComponentWidget, IDisposable
 {
     private static readonly Color[] ValueColorCandidates =
     {
@@ -46,13 +46,14 @@ public partial class StudyNoiseDistributionWidget : UserControl, IDesktopCompone
     private readonly LocalizationService _localizationService = new();
     private readonly DispatcherTimer _uiTimer = new()
     {
-        Interval = TimeSpan.FromMilliseconds(250)
+        Interval = TimeSpan.FromMilliseconds(100)
     };
 
     private double _currentCellSize = 48;
     private string _languageCode = "zh-CN";
     private bool _isAttached;
     private bool _isOnActivePage = true;
+    private bool _isDisposed;
     private bool _isCompactMode;
     private bool _isUltraCompactMode;
     private IDisposable? _monitoringLease;
@@ -604,6 +605,25 @@ public partial class StudyNoiseDistributionWidget : UserControl, IDesktopCompone
     {
         return _localizationService.GetString(_languageCode, key, fallback);
     }
+
+    public void Dispose()
+    {
+        if (_isDisposed)
+        {
+            return;
+        }
+
+        _isDisposed = true;
+
+        _uiTimer.Stop();
+        _uiTimer.Tick -= OnUiTimerTick;
+        AttachedToVisualTree -= OnAttachedToVisualTree;
+        DetachedFromVisualTree -= OnDetachedFromVisualTree;
+        SizeChanged -= OnSizeChanged;
+
+        _monitoringLease?.Dispose();
+        _monitoringLease = null;
+    }
 }
 
 

LanMountainDesktop/Views/Components/StudySessionControlWidget.axaml.cs

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

LanMountainDesktop/Views/Components/WeatherClockWidget.axaml.cs

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

LanMountainDesktop/Views/Components/WorldClockWidget.axaml.cs

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

LanMountainDesktop/Views/MainWindow.DesktopPaging.cs

@@ -38,6 +38,7 @@ public partial class MainWindow
         Bitmap? IconBitmap);
 
     private readonly WindowsStartMenuService _windowsStartMenuService = new();
+    private readonly LinuxDesktopEntryService _linuxDesktopEntryService = new();
     private readonly Dictionary<string, Bitmap> _launcherIconCache = new(StringComparer.OrdinalIgnoreCase);
     private readonly Stack<StartMenuFolderNode> _launcherFolderStack = [];
     private readonly HashSet<string> _hiddenLauncherFolderPaths = new(StringComparer.OrdinalIgnoreCase);
@@ -116,7 +117,9 @@ public partial class MainWindow
         {
             var loadResult = await Task.Run(() =>
             {
-                var loadedRoot = _windowsStartMenuService.Load();
+                var loadedRoot = OperatingSystem.IsLinux()
+                    ? _linuxDesktopEntryService.Load()
+                    : _windowsStartMenuService.Load();
                 var folderIconBytes = OperatingSystem.IsWindows()
                     ? WindowsIconService.TryGetSystemFolderIconPngBytes()
                     : null;
@@ -771,7 +774,7 @@ public partial class MainWindow
         if (LauncherRootTilePanel.Children.Count == 0)
         {
             LauncherRootTilePanel.Children.Add(CreateLauncherHintTile(
-                L("launcher.empty", "No Start Menu entries found."),
+                GetLauncherEmptyText(),
                 string.Empty));
         }
 
@@ -1440,10 +1443,40 @@ public partial class MainWindow
         return new string(letters).ToUpperInvariant();
     }
 
+    private string GetLauncherEmptyText()
+    {
+        return OperatingSystem.IsLinux()
+            ? L("launcher.empty_linux", "No Linux desktop entries were found.")
+            : L("launcher.empty", "No Start Menu entries found.");
+    }
+
     private static void LaunchStartMenuEntry(StartMenuAppEntry app)
     {
         try
         {
+            if (OperatingSystem.IsLinux() &&
+                !string.IsNullOrWhiteSpace(app.LaunchExecutable))
+            {
+                var linuxStartInfo = new ProcessStartInfo
+                {
+                    FileName = app.LaunchExecutable,
+                    UseShellExecute = false
+                };
+
+                if (!string.IsNullOrWhiteSpace(app.WorkingDirectory))
+                {
+                    linuxStartInfo.WorkingDirectory = app.WorkingDirectory;
+                }
+
+                foreach (var argument in app.LaunchArguments)
+                {
+                    linuxStartInfo.ArgumentList.Add(argument);
+                }
+
+                Process.Start(linuxStartInfo);
+                return;
+            }
+
             var startInfo = new ProcessStartInfo
             {
                 FileName = app.FilePath,

LanMountainDesktop/Views/MainWindow.Localization.cs

@@ -97,9 +97,13 @@ public partial class MainWindow
             "Swipe to pick a category, tap to open, then drag a widget onto the desktop.");
 
         LauncherTitleTextBlock.Text = L("launcher.title", "App Launcher");
-        LauncherSubtitleTextBlock.Text = L(
-            "launcher.subtitle",
-            "Displays all apps and folders based on the Windows Start menu structure.");
+        LauncherSubtitleTextBlock.Text = OperatingSystem.IsLinux()
+            ? L(
+                "launcher.subtitle_linux",
+                "Displays installed apps discovered from Linux desktop entries.")
+            : L(
+                "launcher.subtitle",
+                "Displays all apps and folders based on the Windows Start menu structure.");
         ToolTip.SetTip(LauncherFolderBackButton, L("common.back", "Back"));
         ToolTip.SetTip(LauncherFolderCloseButton, L("common.close", "Close"));
 

LanMountainDesktop/packaging/linux/LanMountainDesktop.desktop

@@ -0,0 +1,10 @@
+[Desktop Entry]
+Type=Application
+Version=1.0
+Name=LanMountainDesktop
+Comment=LanMountainDesktop desktop shell
+Exec=@@EXEC@@ %U
+Icon=@@ICON@@
+Terminal=false
+Categories=Utility;Education;
+StartupWMClass=LanMountainDesktop

LanMountainDesktop/packaging/linux/install.sh

@@ -0,0 +1,101 @@
+#!/usr/bin/env sh
+set -eu
+
+SCRIPT_DIR="$(CDPATH= cd -- "$(dirname -- "$0")" && pwd)"
+APP_BIN="$SCRIPT_DIR/LanMountainDesktop"
+DESKTOP_TEMPLATE="$SCRIPT_DIR/share/applications/LanMountainDesktop.desktop"
+ICON_SOURCE="$SCRIPT_DIR/share/icons/hicolor/256x256/apps/lanmountaindesktop.png"
+
+APPLICATIONS_DIR="${XDG_DATA_HOME:-$HOME/.local/share}/applications"
+ICONS_DIR="${XDG_DATA_HOME:-$HOME/.local/share}/icons/hicolor/256x256/apps"
+DESKTOP_TARGET="$APPLICATIONS_DIR/LanMountainDesktop.desktop"
+ICON_TARGET="$ICONS_DIR/lanmountaindesktop.png"
+
+check_audio_dependencies() {
+    MISSING_DEPS=""
+
+    if command -v dpkg >/dev/null 2>&1; then
+        if ! dpkg -s libportaudio2 >/dev/null 2>&1; then
+            MISSING_DEPS="$MISSING_DEPS libportaudio2"
+        fi
+        if ! dpkg -s libasound2 >/dev/null 2>&1; then
+            MISSING_DEPS="$MISSING_DEPS libasound2"
+        fi
+    elif command -v rpm >/dev/null 2>&1; then
+        if ! rpm -q portaudio-libs >/dev/null 2>&1; then
+            MISSING_DEPS="$MISSING_DEPS portaudio-libs"
+        fi
+        if ! rpm -q alsa-lib >/dev/null 2>&1; then
+            MISSING_DEPS="$MISSING_DEPS alsa-lib"
+        fi
+    elif command -v pacman >/dev/null 2>&1; then
+        if ! pacman -Q portaudio >/dev/null 2>&1; then
+            MISSING_DEPS="$MISSING_DEPS portaudio"
+        fi
+        if ! pacman -Q alsa-lib >/dev/null 2>&1; then
+            MISSING_DEPS="$MISSING_DEPS alsa-lib"
+        fi
+    elif command -v apk >/dev/null 2>&1; then
+        if ! apk -e info portaudio >/dev/null 2>&1; then
+            MISSING_DEPS="$MISSING_DEPS portaudio"
+        fi
+        if ! apk -e info alsa-lib >/dev/null 2>&1; then
+            MISSING_DEPS="$MISSING_DEPS alsa-lib"
+        fi
+    fi
+
+    if [ -n "$MISSING_DEPS" ]; then
+        return 1
+    fi
+    return 0
+}
+
+install_audio_dependencies() {
+    if command -v apt-get >/dev/null 2>&1; then
+        sudo apt-get update
+        sudo apt-get install -y libportaudio2 libasound2
+    elif command -v dnf >/dev/null 2>&1; then
+        sudo dnf install -y portaudio-libs alsa-lib
+    elif command -v yum >/dev/null 2>&1; then
+        sudo yum install -y portaudio-libs alsa-lib
+    elif command -v pacman >/dev/null 2>&1; then
+        sudo pacman -S --noconfirm portaudio alsa-lib
+    elif command -v apk >/dev/null 2>&1; then
+        sudo apk add portaudio alsa-lib
+    else
+        printf '%s\n' "Warning: Could not detect package manager. Please install audio dependencies manually:"
+        printf '%s\n' "  - libportaudio2 (or portaudio-libs/portaudio)"
+        printf '%s\n' "  - libasound2 (or alsa-lib)"
+    fi
+}
+
+if ! check_audio_dependencies; then
+    printf '%s\n' "Installing audio dependencies for recording features..."
+    install_audio_dependencies
+
+    if ! check_audio_dependencies; then
+        printf '%s\n' "Warning: Audio dependencies may not be installed correctly."
+        printf '%s\n' "Recording and study monitoring features may not work properly."
+    fi
+fi
+
+mkdir -p "$APPLICATIONS_DIR" "$ICONS_DIR"
+
+cp "$ICON_SOURCE" "$ICON_TARGET"
+sed \
+  -e "s|@@EXEC@@|$APP_BIN|g" \
+  -e "s|@@ICON@@|lanmountaindesktop|g" \
+  "$DESKTOP_TEMPLATE" > "$DESKTOP_TARGET"
+
+chmod +x "$APP_BIN" "$DESKTOP_TARGET"
+
+if command -v update-desktop-database >/dev/null 2>&1; then
+  update-desktop-database "$APPLICATIONS_DIR" >/dev/null 2>&1 || true
+fi
+
+if command -v gtk-update-icon-cache >/dev/null 2>&1; then
+  gtk-update-icon-cache "${XDG_DATA_HOME:-$HOME/.local/share}/icons/hicolor" >/dev/null 2>&1 || true
+fi
+
+printf '%s\n' "Installed desktop entry: $DESKTOP_TARGET"
+printf '%s\n' "Installed icon: $ICON_TARGET"

LanMountainDesktop/scripts/package.ps1

@@ -141,6 +141,33 @@ function Create-PackageArchive {
     return $archivePath
 }
 
+function Add-LinuxDesktopAssets {
+    param(
+        [Parameter(Mandatory = $true)][string]$PublishedDirectory,
+        [Parameter(Mandatory = $true)][string]$RepoRoot
+    )
+
+    $resourcesRoot = Join-Path $RepoRoot "packaging/linux"
+    $desktopTemplate = Join-Path $resourcesRoot "LanMountainDesktop.desktop"
+    $iconSource = Join-Path $resourcesRoot "lanmountaindesktop.png"
+    $installScriptSource = Join-Path $resourcesRoot "install.sh"
+
+    foreach ($requiredPath in @($desktopTemplate, $iconSource, $installScriptSource)) {
+        if (-not (Test-Path -LiteralPath $requiredPath)) {
+            throw "Linux packaging resource is missing: $requiredPath"
+        }
+    }
+
+    $applicationsDir = Join-Path $PublishedDirectory "share/applications"
+    $iconsDir = Join-Path $PublishedDirectory "share/icons/hicolor/256x256/apps"
+    [System.IO.Directory]::CreateDirectory($applicationsDir) | Out-Null
+    [System.IO.Directory]::CreateDirectory($iconsDir) | Out-Null
+
+    Copy-Item -LiteralPath $desktopTemplate -Destination (Join-Path $applicationsDir "LanMountainDesktop.desktop") -Force
+    Copy-Item -LiteralPath $iconSource -Destination (Join-Path $iconsDir "lanmountaindesktop.png") -Force
+    Copy-Item -LiteralPath $installScriptSource -Destination (Join-Path $PublishedDirectory "install.sh") -Force
+}
+
 $scriptRoot = Split-Path -Parent $MyInvocation.MyCommand.Path
 $repoRoot = Resolve-ExistingPath -PathValue (Join-Path $scriptRoot "..")
 
@@ -184,6 +211,10 @@ if ($LASTEXITCODE -ne 0) {
 
 Remove-LibVlcForOtherArch -PublishedDirectory $PublishDir -Rid $RuntimeIdentifier
 
+if ($RuntimeIdentifier -like "linux-*") {
+    Add-LinuxDesktopAssets -PublishedDirectory $PublishDir -RepoRoot $repoRoot
+}
+
 if (-not $KeepSymbols) {
     Get-ChildItem -Path $PublishDir -Recurse -File -Filter "*.pdb" | ForEach-Object {
         [System.IO.File]::Delete($_.FullName)

run.md

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