:root { background: #dce5dc; font-family: "Helvetica Neue", Helvetica, sans-serif; }
* { box-sizing: border-box; }
html, body { margin: 0; width: 100%; height: 100%; overflow: hidden; }
#game { display: block; width: 100%; height: 100%; outline: none; touch-action: manipulation; -webkit-tap-highlight-color: transparent; }
#begin-prompt { position: fixed; inset: auto 0 max(28px, env(safe-area-inset-bottom)) 0; margin: 0; text-align: center; color: #294439; font-size: 14px; font-weight: 500; line-height: 1.5; pointer-events: none; user-select: none; }