diff --git a/scripts/download_wheels.ps1 b/scripts/download_wheels.ps1
index e2b9e53..eef4d8a 100644
--- a/scripts/download_wheels.ps1
+++ b/scripts/download_wheels.ps1
@@ -1,7 +1,55 @@
+param(
+  [switch]$NoPause
+)
+
 $ErrorActionPreference = "Stop"
 $Root = Split-Path -Parent $PSScriptRoot
 $WheelDir = Join-Path $Root "vendor\wheels"
 $Req = Join-Path $Root "requirements.txt"
-New-Item -ItemType Directory -Force -Path $WheelDir | Out-Null
-python -m pip download -r $Req -d $WheelDir
-Write-Host "依赖包已下载到 $WheelDir"
+
+function Wait-BeforeExit {
+  if (-not $NoPause) {
+    Write-Host ""
+    Read-Host "Press Enter to exit"
+  }
+}
+
+function Get-PythonCommand {
+  foreach ($name in @("py", "python", "python3")) {
+    if (Get-Command $name -ErrorAction SilentlyContinue) {
+      return $name
+    }
+  }
+  throw "Python was not found. Install Python 3.10+ before downloading wheels."
+}
+
+try {
+  Set-Location $Root
+  if (-not (Test-Path $Req)) {
+    throw "requirements.txt was not found: $Req"
+  }
+
+  $python = Get-PythonCommand
+  New-Item -ItemType Directory -Force -Path $WheelDir | Out-Null
+
+  Write-Host "Downloading offline wheels to: $WheelDir" -ForegroundColor Cyan
+  if ($python -eq "py") {
+    & py -3 -m pip download -r $Req -d $WheelDir
+  } else {
+    & $python -m pip download -r $Req -d $WheelDir
+  }
+
+  if ($LASTEXITCODE -ne 0) {
+    throw "Wheel download failed. Check network access and pip."
+  }
+
+  Write-Host ""
+  Write-Host "Offline wheels downloaded. Copy the whole project folder to the server and run scripts\install_offline.ps1." -ForegroundColor Green
+} catch {
+  Write-Host ""
+  Write-Host "Download failed:" -ForegroundColor Red
+  Write-Host $_.Exception.Message -ForegroundColor Red
+  exit 1
+} finally {
+  Wait-BeforeExit
+}
diff --git a/scripts/install_offline.ps1 b/scripts/install_offline.ps1
index fa21a7c..e62084c 100644
--- a/scripts/install_offline.ps1
+++ b/scripts/install_offline.ps1
@@ -1,19 +1,165 @@
+param(
+  [switch]$NoPause
+)
+
 $ErrorActionPreference = "Stop"
 $Root = Split-Path -Parent $PSScriptRoot
 $Venv = Join-Path $Root ".venv"
-$Python = "python"
-
-if (-not (Test-Path $Venv)) {
-  & $Python -m venv $Venv
-}
-
 $VenvPython = Join-Path $Venv "Scripts\python.exe"
 $WheelDir = Join-Path $Root "vendor\wheels"
 $Req = Join-Path $Root "requirements.txt"
 
-if (-not (Test-Path $WheelDir)) {
-  throw "未找到离线依赖目录：$WheelDir。请先在联网环境运行 scripts\download_wheels.ps1。"
+function Write-Step {
+  param([string]$Message)
+  Write-Host ""
+  Write-Host "==> $Message" -ForegroundColor Cyan
 }
 
-& $VenvPython -m pip install --no-index --find-links $WheelDir -r $Req
-Write-Host "安装完成。运行 scripts\run.ps1 启动服务。"
+function Wait-BeforeExit {
+  if (-not $NoPause) {
+    Write-Host ""
+    Read-Host "Press Enter to exit"
+  }
+}
+
+function Get-PythonCandidate {
+  $candidates = @(
+    @{ Exe = "py"; Args = @("-3") },
+    @{ Exe = "python"; Args = @() },
+    @{ Exe = "python3"; Args = @() }
+  )
+
+  foreach ($candidate in $candidates) {
+    $command = Get-Command $candidate.Exe -ErrorAction SilentlyContinue
+    if (-not $command) {
+      continue
+    }
+
+    try {
+      $args = @($candidate.Args) + @("-c", "import sys; print(sys.executable); print(sys.version_info.major); print(sys.version_info.minor)")
+      $output = & $candidate.Exe @args 2>$null
+      if ($LASTEXITCODE -ne 0 -or $output.Count -lt 3) {
+        continue
+      }
+      $major = [int]$output[1]
+      $minor = [int]$output[2]
+      if ($major -gt 3 -or ($major -eq 3 -and $minor -ge 10)) {
+        return [pscustomobject]@{
+          Exe = $candidate.Exe
+          Args = $candidate.Args
+          Path = $output[0]
+          Version = "$major.$minor"
+        }
+      }
+    } catch {
+      continue
+    }
+  }
+
+  return $null
+}
+
+function Install-PythonWithWinget {
+  $winget = Get-Command winget -ErrorAction SilentlyContinue
+  if (-not $winget) {
+    throw "Python 3.10+ was not found, and winget is not available. Install Python 3.10+ manually and run this script again."
+  }
+
+  Write-Step "Python was not found. Installing Python 3.12 with winget"
+  & winget install --id Python.Python.3.12 -e --source winget --accept-package-agreements --accept-source-agreements
+  if ($LASTEXITCODE -ne 0) {
+    throw "winget failed to install Python. Check network access or install Python 3.10+ manually."
+  }
+}
+
+function Ensure-Python {
+  $python = Get-PythonCandidate
+  if ($python) {
+    Write-Host "Python found: $($python.Path), version $($python.Version)"
+    return $python
+  }
+
+  Install-PythonWithWinget
+  $python = Get-PythonCandidate
+  if (-not $python) {
+    throw "Python is still unavailable after installation. Reopen PowerShell or check PATH."
+  }
+  Write-Host "Python ready: $($python.Path), version $($python.Version)"
+  return $python
+}
+
+function Invoke-Python {
+  param(
+    [object]$Python,
+    [string[]]$Arguments
+  )
+  $allArgs = @($Python.Args) + $Arguments
+  & $Python.Exe @allArgs
+  if ($LASTEXITCODE -ne 0) {
+    throw "Python command failed: $($Python.Exe) $($allArgs -join ' ')"
+  }
+}
+
+function Ensure-Venv {
+  param([object]$Python)
+  if (-not (Test-Path $VenvPython)) {
+    Write-Step "Creating virtual environment"
+    Invoke-Python -Python $Python -Arguments @("-m", "venv", $Venv)
+  } else {
+    Write-Host "Virtual environment already exists: $Venv"
+  }
+
+  if (-not (Test-Path $VenvPython)) {
+    throw "Failed to create virtual environment: $VenvPython does not exist."
+  }
+}
+
+function Install-Requirements {
+  if (-not (Test-Path $Req)) {
+    throw "requirements.txt was not found: $Req"
+  }
+
+  Write-Step "Installing dependencies"
+  $wheels = @()
+  if (Test-Path $WheelDir) {
+    $wheels = Get-ChildItem -Path $WheelDir -Filter *.whl -File -ErrorAction SilentlyContinue
+  }
+
+  if ($wheels.Count -gt 0) {
+    Write-Host "Offline wheel directory found: $WheelDir"
+    & $VenvPython -m pip install --no-index --find-links $WheelDir -r $Req
+  } else {
+    Write-Host "No offline wheels found. Installing dependencies from the network."
+    & $VenvPython -m pip install -r $Req
+  }
+
+  if ($LASTEXITCODE -ne 0) {
+    throw "Dependency installation failed. If the server is offline, run scripts\download_wheels.ps1 on an online machine first and copy vendor\wheels to this server."
+  }
+}
+
+function Test-ApplicationImport {
+  Write-Step "Verifying environment"
+  & $VenvPython -c "import fastapi, uvicorn, xlrd, xlwt, xlutils, httpx, yaml; print('Dependency verification passed')"
+  if ($LASTEXITCODE -ne 0) {
+    throw "Dependency verification failed."
+  }
+}
+
+try {
+  Set-Location $Root
+  Write-Step "Preparing PCFAnalysis environment"
+  $python = Ensure-Python
+  Ensure-Venv -Python $python
+  Install-Requirements
+  Test-ApplicationImport
+  Write-Host ""
+  Write-Host "Environment installation completed. Run scripts\run.ps1 to start the service." -ForegroundColor Green
+} catch {
+  Write-Host ""
+  Write-Host "Installation failed:" -ForegroundColor Red
+  Write-Host $_.Exception.Message -ForegroundColor Red
+  exit 1
+} finally {
+  Wait-BeforeExit
+}
diff --git a/scripts/run.ps1 b/scripts/run.ps1
index 38b5a5e..a977198 100644
--- a/scripts/run.ps1
+++ b/scripts/run.ps1
@@ -1,8 +1,67 @@
+param(
+  [int]$Port = 7001,
+  [string]$HostAddress = "0.0.0.0",
+  [switch]$NoPause
+)
+
 $ErrorActionPreference = "Stop"
 $Root = Split-Path -Parent $PSScriptRoot
 $VenvPython = Join-Path $Root ".venv\Scripts\python.exe"
-if (-not (Test-Path $VenvPython)) {
-  throw "未找到虚拟环境。请先运行 scripts\install_offline.ps1。"
+$InstallScript = Join-Path $PSScriptRoot "install_offline.ps1"
+
+function Wait-BeforeExit {
+  if (-not $NoPause) {
+    Write-Host ""
+    Read-Host "Press Enter to exit"
+  }
+}
+
+function Test-PortAvailable {
+  param([int]$CheckPort)
+  $listener = Get-NetTCPConnection -LocalPort $CheckPort -State Listen -ErrorAction SilentlyContinue
+  if ($listener) {
+    $pids = ($listener | Select-Object -ExpandProperty OwningProcess -Unique) -join ", "
+    throw "Port $CheckPort is already in use. Owning process PID: $pids"
+  }
+}
+
+function Test-EnvironmentReady {
+  if (-not (Test-Path $VenvPython)) {
+    return $false
+  }
+  & $VenvPython -c "import fastapi, uvicorn, xlrd, xlwt, xlutils, httpx, yaml" 2>$null
+  return ($LASTEXITCODE -eq 0)
+}
+
+try {
+  Set-Location $Root
+
+  if (-not (Test-EnvironmentReady)) {
+    Write-Host "Runtime environment is missing or incomplete. Installing now..." -ForegroundColor Yellow
+    powershell -NoProfile -ExecutionPolicy Bypass -File $InstallScript -NoPause
+    if ($LASTEXITCODE -ne 0) {
+      throw "Automatic environment installation failed. See the error above."
+    }
+  }
+
+  Test-PortAvailable -CheckPort $Port
+
+  Write-Host ""
+  Write-Host "Starting PCFAnalysis service" -ForegroundColor Cyan
+  Write-Host "Bind URL: http://$HostAddress`:$Port"
+  Write-Host "Local URL: http://127.0.0.1`:$Port"
+  Write-Host "Press Ctrl+C in this window to stop the service."
+  Write-Host ""
+
+  & $VenvPython -m uvicorn app.main:app --host $HostAddress --port $Port
+  if ($LASTEXITCODE -ne 0) {
+    throw "Service exited with code: $LASTEXITCODE"
+  }
+} catch {
+  Write-Host ""
+  Write-Host "Startup failed:" -ForegroundColor Red
+  Write-Host $_.Exception.Message -ForegroundColor Red
+  exit 1
+} finally {
+  Wait-BeforeExit
 }
-Set-Location $Root
-& $VenvPython -m uvicorn app.main:app --host 127.0.0.1 --port 7001