.pwa-install-btn{
  position:fixed;
  right:18px;
  bottom:18px;
  z-index:9999;
  border:0;
  border-radius:999px;
  padding:13px 18px;
  background:#0f766e;
  color:#fff;
  font-weight:800;
  box-shadow:0 16px 36px rgba(15,118,110,.28);
  cursor:pointer;
  align-items:center;
  gap:8px;
}
.pwa-install-btn:hover{filter:brightness(.95)}
.pwa-ios-help,.pwa-ios-mini{
  position:fixed;
  left:50%;
  bottom:82px;
  transform:translateX(-50%);
  width:min(420px,calc(100% - 28px));
  z-index:10000;
  background:#fff;
  color:#0f172a;
  border:1px solid #dbeafe;
  border-radius:16px;
  padding:14px 16px;
  box-shadow:0 18px 40px rgba(2,6,23,.2);
  font-size:14px;
  line-height:1.45;
}
.pwa-ios-mini{bottom:18px;background:#ecfeff;border-color:#99f6e4;color:#115e59}
@media(max-width:640px){
  .pwa-install-btn{right:14px;bottom:14px;padding:12px 15px;font-size:14px}
}
@media print{
  .pwa-install-btn,.pwa-ios-help,.pwa-ios-mini{display:none!important}
}