:root { color-scheme: dark; background: #000; }
* { box-sizing: border-box; }
body { margin: 0; min-height: 100svh; display: grid; place-items: center; background: #000; }
main { width: min(640px, 100vw, 133.333333svh); }
.flame-entrance { display: block; aspect-ratio: 4 / 3; cursor: pointer; -webkit-tap-highlight-color: transparent; }
.flame-entrance:focus-visible { outline: 2px solid #d0dd1d; outline-offset: -2px; }
canvas { display: block; width: 100%; height: 100%; image-rendering: pixelated; }