:root { color-scheme: dark; background: #000; }
* { box-sizing: border-box; }
html, body { width: 100%; height: 100%; margin: 0; overflow: hidden; overscroll-behavior: none; }
main { width: 100%; height: 100%; min-height: 100svh; }
canvas { display: block; width: 100%; height: 100%; outline: none; cursor: grab; touch-action: none; -webkit-tap-highlight-color: transparent; }
canvas:active { cursor: grabbing; }
canvas:focus-visible { outline: 1px solid #292929; outline-offset: -8px; }