{
  "name": "Grammar Index - English Reference",
  "short_name": "Grammar Index",
  "description": "Comprehensive English grammar reference with 68 topics across 7 categories",
  "start_url": "/grammarindex/",
  "display": "standalone",
  "background_color": "#111213",
  "theme_color": "#4ECDC4",
  "icons": [
    {
      "src": "../icons/gri_button.png",
      "sizes": "64x64",
      "type": "image/png"
    },
    {
      "src": "../icons/gri_button.png",
      "sizes": "192x192",
      "type": "image/png"
    },
    {
      "src": "../icons/gri_button.png",
      "sizes": "512x512",
      "type": "image/png"
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  ]
}