{
  "name": "乙4ヘルパー - 危険物用語一覧",
  "short_name": "乙4ヘルパー",
  "description": "危険物取扱者乙種4類の用語集・模擬試験・計算ツール",
  "start_url": "/",
  "display": "standalone",
  "background_color": "#0d0f14",
  "theme_color": "#ff6b35",
  "lang": "ja",
  "icons": [
    {
      "src": "/OtsuyonHelper_favicon.png",
      "sizes": "180x180",
      "type": "image/png",
      "purpose": "any"
    },
    {
      "src": "/icon-192.png",
      "sizes": "192x192",
      "type": "image/png",
      "purpose": "any"
    },
    {
      "src": "/icon-512.png",
      "sizes": "512x512",
      "type": "image/png",
      "purpose": "maskable"
    }
  ]
}