@media (max-width: 420px) {
  .app { width: 100vw; height: 100dvh; max-width: none; }
  .splash img { object-position: center center; }
}
@media (min-width: 700px) {
  .app { border-radius: 24px; }
}
@media (prefers-reduced-motion: reduce) {
  .splash-play, .drop-prompt { animation: none; }
}