diff --git a/.gitignore b/.gitignore
index 0f11773..1d1142d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -89,3 +89,6 @@ Desktop.ini
 
 # 设置文件（如果包含敏感信息）
 # settings.json
+
+# 发布/打包输出
+[Dd]ist/
diff --git a/AppSettings.cs b/AppSettings.cs
index 29726bf..01930de 100644
--- a/AppSettings.cs
+++ b/AppSettings.cs
@@ -11,7 +11,7 @@ namespace TimerApp
         public int IdleThresholdSeconds { get; set; } = 30;
         public bool IsDarkMode { get; set; } = true;
 
-        private static string LegacyConfigPath => Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "settings.json");
+        private static string LegacyConfigPath => Path.Combine(AppContext.BaseDirectory, "settings.json");
 
         private static string ConfigPath
         {
@@ -22,11 +22,22 @@ namespace TimerApp
             }
         }
 
+        private static string EffectiveConfigPath => PortableMode.IsPortable ? LegacyConfigPath : ConfigPath;
+
         public static AppSettings Load()
         {
             try
             {
-                string path = File.Exists(ConfigPath) ? ConfigPath : LegacyConfigPath;
+                string path;
+                if (PortableMode.IsPortable)
+                {
+                    path = LegacyConfigPath;
+                }
+                else
+                {
+                    path = File.Exists(ConfigPath) ? ConfigPath : LegacyConfigPath;
+                }
+
                 if (File.Exists(path))
                 {
                     string json = File.ReadAllText(path);
@@ -44,9 +55,12 @@ namespace TimerApp
         {
             try
             {
-                Directory.CreateDirectory(Path.GetDirectoryName(ConfigPath)!);
+                string path = EffectiveConfigPath;
+                string? dir = Path.GetDirectoryName(path);
+                if (!string.IsNullOrWhiteSpace(dir))
+                    Directory.CreateDirectory(dir);
                 string json = JsonSerializer.Serialize(this, new JsonSerializerOptions { WriteIndented = true });
-                File.WriteAllText(ConfigPath, json);
+                File.WriteAllText(path, json);
             }
             catch
             {
diff --git a/NativeMethods.cs b/NativeMethods.cs
index bc9637c..78ef4b7 100644
--- a/NativeMethods.cs
+++ b/NativeMethods.cs
@@ -2,7 +2,6 @@ using System;
 using System.Runtime.InteropServices;
 using System.Threading;
 using System.Threading.Tasks;
-using Windows.Media.Control;
 
 namespace TimerApp
 {
@@ -80,18 +79,8 @@ namespace TimerApp
                 bool playing = false;
                 try
                 {
-                    var sessionManager = await GlobalSystemMediaTransportControlsSessionManager.RequestAsync();
-                    var sessions = sessionManager.GetSessions();
-
-                    foreach (var session in sessions)
-                    {
-                        var playbackInfo = session.GetPlaybackInfo();
-                        if (playbackInfo.PlaybackStatus == GlobalSystemMediaTransportControlsSessionPlaybackStatus.Playing)
-                        {
-                            playing = true;
-                            break;
-                        }
-                    }
+                    await Task.Yield();
+                    playing = TryIsAudioPlaying();
                 }
                 catch
                 {
@@ -105,5 +94,166 @@ namespace TimerApp
                 }
             });
         }
+
+        private static bool TryIsAudioPlaying()
+        {
+            object? deviceEnumeratorObj = null;
+            IMMDeviceEnumerator? deviceEnumerator = null;
+            IMMDevice? device = null;
+            object? sessionManagerObj = null;
+            IAudioSessionManager2? sessionManager = null;
+            IAudioSessionEnumerator? sessionEnumerator = null;
+
+            try
+            {
+                Type? enumeratorType = Type.GetTypeFromCLSID(CLSID_MMDeviceEnumerator);
+                if (enumeratorType is null)
+                    return false;
+
+                deviceEnumeratorObj = Activator.CreateInstance(enumeratorType);
+                if (deviceEnumeratorObj is null)
+                    return false;
+                deviceEnumerator = (IMMDeviceEnumerator)deviceEnumeratorObj;
+
+                Marshal.ThrowExceptionForHR(deviceEnumerator.GetDefaultAudioEndpoint(EDataFlow.eRender, ERole.eMultimedia, out device));
+
+                Guid iid = typeof(IAudioSessionManager2).GUID;
+                Marshal.ThrowExceptionForHR(device.Activate(ref iid, CLSCTX.CLSCTX_ALL, IntPtr.Zero, out sessionManagerObj));
+                if (sessionManagerObj is null)
+                    return false;
+                sessionManager = (IAudioSessionManager2)sessionManagerObj;
+
+                Marshal.ThrowExceptionForHR(sessionManager.GetSessionEnumerator(out sessionEnumerator));
+                Marshal.ThrowExceptionForHR(sessionEnumerator.GetCount(out int count));
+
+                for (int i = 0; i < count; i++)
+                {
+                    Marshal.ThrowExceptionForHR(sessionEnumerator.GetSession(i, out IAudioSessionControl? sessionControl));
+                    if (sessionControl is null)
+                        continue;
+
+                    try
+                    {
+                        Marshal.ThrowExceptionForHR(sessionControl.GetState(out AudioSessionState state));
+                        if (state != AudioSessionState.Active)
+                            continue;
+
+                        if (sessionControl is IAudioMeterInformation meter)
+                        {
+                            Marshal.ThrowExceptionForHR(meter.GetPeakValue(out float peak));
+                            if (peak > 0.001f)
+                                return true;
+                        }
+                        else
+                        {
+                            return true;
+                        }
+                    }
+                    finally
+                    {
+                        Marshal.FinalReleaseComObject(sessionControl);
+                    }
+                }
+
+                return false;
+            }
+            catch
+            {
+                return false;
+            }
+            finally
+            {
+                if (sessionEnumerator is not null) Marshal.FinalReleaseComObject(sessionEnumerator);
+                if (sessionManagerObj is not null) Marshal.FinalReleaseComObject(sessionManagerObj);
+                if (device is not null) Marshal.FinalReleaseComObject(device);
+                if (deviceEnumeratorObj is not null) Marshal.FinalReleaseComObject(deviceEnumeratorObj);
+            }
+        }
+
+        private static readonly Guid CLSID_MMDeviceEnumerator = new Guid("BCDE0395-E52F-467C-8E3D-C4579291692E");
+
+        private enum EDataFlow
+        {
+            eRender = 0,
+            eCapture = 1,
+            eAll = 2
+        }
+
+        private enum ERole
+        {
+            eConsole = 0,
+            eMultimedia = 1,
+            eCommunications = 2
+        }
+
+        private enum AudioSessionState
+        {
+            Inactive = 0,
+            Active = 1,
+            Expired = 2
+        }
+
+        [Flags]
+        private enum CLSCTX : uint
+        {
+            CLSCTX_INPROC_SERVER = 0x1,
+            CLSCTX_INPROC_HANDLER = 0x2,
+            CLSCTX_LOCAL_SERVER = 0x4,
+            CLSCTX_REMOTE_SERVER = 0x10,
+            CLSCTX_ALL = CLSCTX_INPROC_SERVER | CLSCTX_INPROC_HANDLER | CLSCTX_LOCAL_SERVER | CLSCTX_REMOTE_SERVER
+        }
+
+        [ComImport]
+        [Guid("A95664D2-9614-4F35-A746-DE8DB63617E6")]
+        [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
+        private interface IMMDeviceEnumerator
+        {
+            int NotImpl1();
+            int GetDefaultAudioEndpoint(EDataFlow dataFlow, ERole role, out IMMDevice ppDevice);
+        }
+
+        [ComImport]
+        [Guid("D666063F-1587-4E43-81F1-B948E807363F")]
+        [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
+        private interface IMMDevice
+        {
+            int Activate(ref Guid iid, CLSCTX dwClsCtx, IntPtr pActivationParams, [MarshalAs(UnmanagedType.IUnknown)] out object ppInterface);
+        }
+
+        [ComImport]
+        [Guid("77AA99A0-1BD6-484F-8BC7-2C654C9A9B6F")]
+        [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
+        private interface IAudioSessionManager2
+        {
+            int NotImpl1();
+            int NotImpl2();
+            int GetSessionEnumerator(out IAudioSessionEnumerator sessionEnum);
+        }
+
+        [ComImport]
+        [Guid("E2F5BB11-0570-40CA-ACDD-3AA01277DEE8")]
+        [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
+        private interface IAudioSessionEnumerator
+        {
+            int GetCount(out int sessionCount);
+            int GetSession(int sessionCount, out IAudioSessionControl session);
+        }
+
+        [ComImport]
+        [Guid("F4B1A599-7266-4319-A8CA-E70ACB11E8CD")]
+        [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
+        private interface IAudioSessionControl
+        {
+            int NotImpl1();
+            int GetState(out AudioSessionState state);
+        }
+
+        [ComImport]
+        [Guid("C02216F6-8C67-4B5B-9D00-D008E73E0064")]
+        [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
+        private interface IAudioMeterInformation
+        {
+            int GetPeakValue(out float peak);
+        }
     }
 }
diff --git a/PortableMode.cs b/PortableMode.cs
new file mode 100644
index 0000000..102d90c
--- /dev/null
+++ b/PortableMode.cs
@@ -0,0 +1,46 @@
+using System;
+
+namespace TimerApp
+{
+    internal static class PortableMode
+    {
+        private const string PortableEnvVarName = "TIMERAPP_PORTABLE";
+
+        public static bool IsPortable
+        {
+            get
+            {
+                try
+                {
+                    string? env = Environment.GetEnvironmentVariable(PortableEnvVarName);
+                    if (!string.IsNullOrWhiteSpace(env))
+                    {
+                        if (string.Equals(env, "0", StringComparison.OrdinalIgnoreCase) ||
+                            string.Equals(env, "false", StringComparison.OrdinalIgnoreCase) ||
+                            string.Equals(env, "no", StringComparison.OrdinalIgnoreCase) ||
+                            string.Equals(env, "off", StringComparison.OrdinalIgnoreCase) ||
+                            string.Equals(env, "disable", StringComparison.OrdinalIgnoreCase))
+                        {
+                            return false;
+                        }
+
+                        if (string.Equals(env, "1", StringComparison.OrdinalIgnoreCase) ||
+                            string.Equals(env, "true", StringComparison.OrdinalIgnoreCase) ||
+                            string.Equals(env, "yes", StringComparison.OrdinalIgnoreCase) ||
+                            string.Equals(env, "on", StringComparison.OrdinalIgnoreCase) ||
+                            string.Equals(env, "enable", StringComparison.OrdinalIgnoreCase))
+                        {
+                            return true;
+                        }
+                    }
+
+                    return true;
+                }
+                catch
+                {
+                    return true;
+                }
+            }
+        }
+    }
+}
diff --git a/TaskbarIntegration.cs b/TaskbarIntegration.cs
index 201759e..42b62e1 100644
--- a/TaskbarIntegration.cs
+++ b/TaskbarIntegration.cs
@@ -26,6 +26,9 @@ namespace TimerApp
 
         public static void InitializeShortcuts()
         {
+            if (PortableMode.IsPortable)
+                return;
+
             string? iconPath = TryEnsureIconFile();
             if (iconPath is null)
                 return;
diff --git a/TimerApp.csproj b/TimerApp.csproj
index 8790a06..a3de757 100644
--- a/TimerApp.csproj
+++ b/TimerApp.csproj
@@ -1,11 +1,11 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <OutputType>WinExe</OutputType>
-    <TargetFramework>net9.0-windows10.0.17763.0</TargetFramework>
+    <TargetFramework>net9.0-windows</TargetFramework>
     <Nullable>enable</Nullable>
     <UseWindowsForms>true</UseWindowsForms>
     <ImplicitUsings>enable</ImplicitUsings>
   </PropertyGroup>
 
-</Project>
\ No newline at end of file
+</Project>
diff --git a/scripts/publish-portable.cmd b/scripts/publish-portable.cmd
new file mode 100644
index 0000000..782c8b3
--- /dev/null
+++ b/scripts/publish-portable.cmd
@@ -0,0 +1,5 @@
+@echo off
+setlocal
+powershell -NoProfile -ExecutionPolicy Bypass -File "%~dp0publish-portable.ps1" %*
+exit /b %errorlevel%
+
diff --git a/scripts/publish-portable.ps1 b/scripts/publish-portable.ps1
new file mode 100644
index 0000000..f292c50
--- /dev/null
+++ b/scripts/publish-portable.ps1
@@ -0,0 +1,91 @@
+param(
+    [string]$Rid = "win-x64",
+    [bool]$SelfContained = $false,
+    [bool]$SingleFile = $true,
+    [bool]$EnableCompressionInSingleFile = $true,
+    [bool]$ReadyToRun = $false,
+    [bool]$Trim = $false,
+    [bool]$InvariantGlobalization = $false
+)
+
+$ErrorActionPreference = "Stop"
+Set-StrictMode -Version Latest
+
+$repoRoot = Resolve-Path (Join-Path $PSScriptRoot "..")
+$project = Join-Path $repoRoot "TimerApp.csproj"
+
+$artifactsDir = Join-Path $repoRoot "artifacts"
+$distDir = Join-Path $repoRoot "dist"
+
+New-Item -ItemType Directory -Force -Path $distDir | Out-Null
+
+$EnableCompressionInSingleFile = $EnableCompressionInSingleFile -and $SelfContained
+
+$variantParts = @()
+$variantParts += $(if ($SelfContained) { "sc" } else { "fd" })
+$variantParts += $(if ($SingleFile) { "single" } else { "multi" })
+if ($SingleFile -and $EnableCompressionInSingleFile) { $variantParts += "comp" }
+if ($ReadyToRun) { $variantParts += "r2r" }
+if ($Trim) { $variantParts += "trim" }
+if ($InvariantGlobalization) { $variantParts += "invglob" }
+$variant = ($variantParts -join "-")
+
+$defaultVariant = "fd-single"
+$publishBaseDir = Join-Path $artifactsDir "publish"
+$publishDir = Join-Path (Join-Path $publishBaseDir $Rid) $variant
+
+New-Item -ItemType Directory -Force -Path $publishDir | Out-Null
+
+$props = @(
+    "-p:SelfContained=$SelfContained",
+    "-p:PublishSingleFile=$SingleFile",
+    "-p:PublishReadyToRun=$ReadyToRun",
+    "-p:DebugType=None",
+    "-p:DebugSymbols=false"
+)
+
+if ($SingleFile) {
+    $props += "-p:IncludeNativeLibrariesForSelfExtract=true"
+    if ($SelfContained) {
+        $props += "-p:EnableCompressionInSingleFile=$EnableCompressionInSingleFile"
+    }
+}
+
+if ($Trim) {
+    $props += "-p:PublishTrimmed=true"
+    $props += "-p:TrimMode=partial"
+}
+
+if ($InvariantGlobalization) {
+    $props += "-p:InvariantGlobalization=true"
+}
+
+dotnet publish $project `
+    -c Release `
+    -r $Rid `
+    @props `
+    -o $publishDir
+
+if ($LASTEXITCODE -ne 0) {
+    throw "dotnet publish failed with exit code $LASTEXITCODE"
+}
+
+$zipName = if ($variant -eq $defaultVariant) { "TimerApp-Portable-$Rid.zip" } else { "TimerApp-Portable-$Rid-$variant.zip" }
+$zipPath = Join-Path $distDir $zipName
+
+if (Test-Path $zipPath) {
+    try { [System.IO.File]::Delete($zipPath) } catch { }
+}
+
+Compress-Archive -Path (Join-Path $publishDir "*") -DestinationPath $zipPath -Force
+
+$mainExe = Join-Path $publishDir "TimerApp.exe"
+if (Test-Path $mainExe) {
+    $exeMiB = [Math]::Round(((Get-Item $mainExe).Length / 1MB), 1)
+    Write-Host "EXE size: $exeMiB MiB"
+}
+$zipMiB = [Math]::Round(((Get-Item $zipPath).Length / 1MB), 1)
+Write-Host "ZIP size: $zipMiB MiB"
+
+Write-Host "Portable zip created:"
+Write-Host "  $zipPath"