/* Center over the visible viewport, including an auto-height public iframe. */
.order-form-page #of-stage .of-login-backdrop[data-role="of-addon-upsell-backdrop"] {
  position: fixed;
  inset: auto 0 auto;
  top: var(--of-addon-visible-top, 0px);
  height: var(--of-addon-visible-height, 100dvh);
  min-height: 0;
  box-sizing: border-box;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: max(12px, env(safe-area-inset-top, 0px)) 12px max(12px, env(safe-area-inset-bottom, 0px));
  overflow: hidden;
  overscroll-behavior: contain;
}
.order-form-page #of-stage .of-login-backdrop[data-role="of-addon-upsell-backdrop"] > .of-upsell-modal {
  display: flex;
  flex-direction: column;
  width: min(760px, 100%);
  max-width: 100%;
  max-height: 100%;
  min-height: 0;
  box-sizing: border-box;
  overflow: hidden;
  margin: 0;
}
.order-form-page #of-stage .of-login-backdrop[data-role="of-addon-upsell-backdrop"] :is(.of-login-modal-head, .of-login-actions) {
  flex: 0 0 auto;
}
.order-form-page #of-stage .of-login-backdrop[data-role="of-addon-upsell-backdrop"] .of-upsell-list {
  min-height: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
  touch-action: pan-y;
}
@media (max-width: 600px) {
  .order-form-page #of-stage .of-login-backdrop[data-role="of-addon-upsell-backdrop"] .of-login-modal-head h3 { font-size: 24px; }
}