:root { color-scheme: dark; background: #0b241c; }
* { box-sizing: border-box; }
html, body { margin: 0; width: 100%; height: 100%; overflow: hidden; overscroll-behavior: none; }
body { --safe-top: env(safe-area-inset-top, 0px); --safe-bottom: env(safe-area-inset-bottom, 0px); --safe-left: env(safe-area-inset-left, 0px); --safe-right: env(safe-area-inset-right, 0px); }
canvas { display: block; width: 100vw; height: 100vh; height: 100dvh; touch-action: none; user-select: none; -webkit-user-select: none; outline: none; }
.screen-reader { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }