{
  "name": "BrainGym Abacus",
  "short_name": "BrainGym",
  "start_url": "/",
  "display": "standalone",
  "background_color": "#ffffff",
  "theme_color": "#0e5aa7",
  "icons": [
    { "src": "favicon.ico", "sizes": "48x48 64x64 128x128 256x256", "type": "image/x-icon" }
  ]
}