.pwa-install{position:fixed;right:18px;bottom:18px;z-index:9999;border:1px solid rgba(255,255,255,.18);border-radius:14px;padding:12px 16px;background:linear-gradient(135deg,#e31b23,#a90008);color:#fff;font:700 12px Inter,system-ui;box-shadow:0 14px 35px rgba(180,0,8,.32);cursor:pointer}.pwa-install[hidden]{display:none}@media(max-width:640px){.pwa-install{right:12px;bottom:12px;left:12px;width:calc(100% - 24px)}}