{
  "name": "Lo Shu Enigma",
  "short_name": "LoShu",
  "description": "Ancient magic square puzzle with cosmic legend.",
  "start_url": "index.html",
  "display": "standalone",
  "orientation": "portrait",
  "background_color": "#121212",
  "theme_color": "#c0392b",
  "icons": [
    { 
      "src": "icons/icon-192.png", 
      "type": "image/png", 
      "sizes": "192x192",
      "purpose": "any maskable" 
    },
    { 
      "src": "icons/icon-512.png", 
      "type": "image/png", 
      "sizes": "512x512",
      "purpose": "any maskable" 
    }
  ],
  "categories": ["games", "education"],
  "lang": "en",
  "dir": "ltr"
}