{"name":"B2","short_name":"B2","description":"B2","start_url":"/","display":"standalone","background_color":"#000000","theme_color":"#000000","lang":"zh-CN","scope":"/","orientation":"portrait","icons":[{"src":"/icons/Icon-192.png","sizes":"192x192","type":"image/png"},{"src":"/icons/Icon-512.png","sizes":"512x512","type":"image/png"},{"src":"/icons/Icon-maskable-192.png","sizes":"192x192","type":"image/png","purpose":"maskable"},{"src":"/icons/Icon-maskable-512.png","sizes":"512x512","type":"image/png","purpose":"maskable"}]}