.feedback:empty { display: none; }
#autoplay { border: 1px solid #35443c; background: transparent; color: #b2c0b4; padding: 10px 12px; font: 9px 'DM Mono', monospace; }
#autoplay[aria-pressed="true"] { color: #c7f36b; border-color: #789c53; }
@media (min-width: 801px) and (min-height: 600px) {
  .shell { max-width: none; padding: 0 clamp(20px, 3vw, 48px); }
  header { height: 54px; }
  .intro { padding: 14px 0 12px; align-items: center; }
  .intro h1 { font-size: 30px; letter-spacing: -1px; margin: 5px 0; }
  .intro p { font-size: 12px; }
  .intro-note { font-size: 11px; }
  .game-layout { grid-template-columns: minmax(0, min(calc(100vh - 210px), calc(100% - 340px))) minmax(290px, 320px); justify-content: center; align-items: start; gap: 16px; }
  .board-top, .board-bottom { height: 34px; }
  aside { max-height: calc(100vh - 142px); overflow-y: auto; scrollbar-width: thin; scrollbar-color: #526954 transparent; }
  footer { margin-top: 18px; padding: 16px 0; }
}