.pwa-install-button {
  position: fixed;
  z-index: 1200;
  right: max(16px, env(safe-area-inset-right));
  bottom: max(16px, env(safe-area-inset-bottom));
  padding: 11px 17px;
  border: 1px solid rgba(98, 231, 255, .8);
  border-radius: 999px;
  color: #fff;
  background: linear-gradient(105deg, #a928f1, #3155f4 68%, #078be9);
  box-shadow: 0 8px 26px rgba(34, 33, 127, .42), inset 0 1px 0 rgba(255,255,255,.24);
  font: 600 13px Poppins, sans-serif;
  cursor: pointer;
}
.pwa-install-button[hidden] { display: none; }
.pwa-install-button:focus-visible { outline: 2px solid #d4f7ff; outline-offset: 3px; }
@media (max-width: 520px) {
  .pwa-install-button { right: max(14px, env(safe-area-inset-right)); bottom: max(14px, env(safe-area-inset-bottom)); padding: 10px 14px; font-size: 12px; }
}