{
  "name": "Signal 安全下载指南",
  "short_name": "Signal 下载",
  "lang": "zh-CN",
  "start_url": "/",
  "display": "standalone",
  "background_color": "#f4f7fb",
  "theme_color": "#1557d5",
  "icons": [{ "src": "/images/logo.svg", "sizes": "any", "type": "image/svg+xml", "purpose": "any" }]
}