.pwa-install-control {
  position: fixed;
  right: max(16px, calc((100vw - 750px) / 2 + 16px));
  bottom: calc(82px + env(safe-area-inset-bottom));
  z-index: 180;
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 0 13px;
  border: 1px solid rgba(255, 255, 255, .35);
  border-radius: 999px;
  color: #fff;
  background: #7356dc;
  box-shadow: 0 10px 24px rgba(76, 54, 170, .26);
  font-size: 11px;
  font-weight: 800;
  transition: transform .2s ease, background .2s ease, box-shadow .2s ease;
}

.pwa-install-control svg { width: 15px; height: 15px; }
.pwa-install-control:hover { background: #5540b5; transform: translateY(-2px); box-shadow: 0 13px 28px rgba(76, 54, 170, .31); }
.pwa-install-control:active { transform: translateY(0); }

body.reader-open .pwa-install-control,
body.modal-open .pwa-install-control {
  display: none !important;
}

@media (min-width: 761px) {
  .pwa-install-control { bottom: 24px; }
}

@media (prefers-reduced-motion: reduce) {
  .pwa-install-control { transition: none; }
}