.pwa-install-button {
  position: fixed;
  z-index: 1000;
  right: max(16px, env(safe-area-inset-right));
  bottom: max(16px, env(safe-area-inset-bottom));
  border: 0;
  border-radius: 999px;
  padding: 12px 18px;
  color: #fff;
  background: #20543d;
  box-shadow: 0 8px 24px rgb(23 27 32 / 20%);
  font: 700 14px/1.2 Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  cursor: pointer;
}

.pwa-install-button:hover { background: #174330; }
.pwa-install-button:focus-visible { outline: 3px solid #d09145; outline-offset: 3px; }

.pwa-install-dialog {
  width: min(calc(100% - 32px), 420px);
  border: 1px solid #dfe1dc;
  border-radius: 20px;
  padding: 28px;
  color: #171b20;
  background: #fff;
  box-shadow: 0 24px 80px rgb(23 27 32 / 25%);
  font: 15px/1.6 Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.pwa-install-dialog::backdrop { background: rgb(23 27 32 / 48%); }
.pwa-install-dialog h2 { margin: 0 0 10px; font: 600 26px/1.2 Georgia, serif; }
.pwa-install-dialog p { margin: 0; color: #687078; }
.pwa-install-dialog form { display: flex; justify-content: flex-end; margin-top: 22px; }
.pwa-install-dialog button { border: 0; border-radius: 9px; padding: 10px 16px; color: #fff; background: #20543d; font: inherit; font-weight: 700; cursor: pointer; }