{
  "name": "SchulteLab — Free Schulte Table Trainer",
  "short_name": "SchulteLab",
  "description": "Free online Schulte table trainer: timed grids, dynamic variants, progress tracking. EN/中文, no sign-up.",
  "start_url": "/",
  "display": "standalone",
  "background_color": "#faf6f1",
  "theme_color": "#b84c1f",
  "icons": [
    { "src": "/favicon.svg", "sizes": "any", "type": "image/svg+xml", "purpose": "any" },
    { "src": "/og-image.png", "sizes": "1200x630", "type": "image/png" }
  ]
}