.pwa-install-notice {
  position: fixed;
  top: max(24px, env(safe-area-inset-top));
  right: max(24px, env(safe-area-inset-right));
  z-index: 10000;
  display: flex;
  gap: 10px;
  box-sizing: border-box;
  width: min(330px, calc(100vw - 32px));
  padding: 14px 32px 16px 14px;
  border: 1px solid var(--line);
  border-top: 3px solid var(--gold);
  border-radius: 12px;
  background: #fff;
  box-shadow: 0 16px 48px rgba(21, 31, 84, .2);
  overflow: hidden;
  opacity: 1;
  transition: opacity .4s ease, transform .4s ease;
}
.pwa-install-notice[hidden] { display: none; }
.pwa-install-notice.is-dismissing { opacity: 0; transform: translateY(-12px); pointer-events: none; }
.pwa-install-icon { position: relative; display: grid; place-items: center; flex: 0 0 34px; height: 34px; border-radius: 9px; background: var(--blue-light); color: var(--blue); font-size: 17px; }
.pwa-install-icon span { position: absolute; bottom: -4px; right: -4px; display: grid; place-items: center; width: 17px; height: 17px; border: 2px solid white; border-radius: 50%; background: var(--navy); color: white; font-size: 8px; }
.pwa-install-content { min-width: 0; }
.pwa-install-content p { margin: 0 0 8px; font-size: 12px; line-height: 1.45; color: var(--muted); }
.pwa-install-content .pwa-install-title { margin-bottom: 4px; font-family: var(--font-display); font-weight: 800; font-size: 13px; color: var(--navy); }
#pwa-install-button { display: inline-flex; align-items: center; gap: 6px; padding: 7px 12px; border: 0; border-radius: 8px; background: var(--blue); color: white; font: 700 12px var(--font-body); cursor: pointer; }
#pwa-install-button:hover { background: var(--navy); }
.pwa-install-close { position: absolute; top: 9px; right: 9px; display: grid; place-items: center; width: 28px; height: 28px; border: 0; border-radius: 50%; background: transparent; color: var(--muted); cursor: pointer; }
.pwa-install-close:hover { background: var(--blue-light); }
.pwa-install-notice button:focus-visible { outline: 3px solid var(--gold); outline-offset: 3px; }
@media (max-width: 480px) { .pwa-install-notice { top: max(16px, env(safe-area-inset-top)); right: 16px; gap: 10px; } }
@media (prefers-reduced-motion: reduce) { .pwa-install-notice { transition: none; } }

.pwa-install-countdown { position: absolute; bottom: 0; left: 0; right: 0; height: 4px; background: var(--blue-light); }
.pwa-install-countdown span { display: block; height: 100%; width: 100%; background: var(--gold); transform-origin: left; animation: pwa-install-countdown 10s linear forwards; }
@keyframes pwa-install-countdown { from { transform: scaleX(1); } to { transform: scaleX(0); } }
@media (prefers-reduced-motion: reduce) { .pwa-install-countdown span { animation-timing-function: steps(10, end); } }