:root { color-scheme: light; background: #fff; }
* { box-sizing: border-box; }
html, body { width: 100%; height: 100%; margin: 0; overflow: hidden; }
body { background: #fff; touch-action: none; -webkit-tap-highlight-color: transparent; }
main { width: 100%; height: 100%; height: 100svh; display: grid; place-items: center; }
#logo { display: block; width: clamp(230px, 43vw, 550px); max-width: 84vw; height: auto; user-select: none; -webkit-user-select: none; }
#plasma { position: fixed; inset: 0; width: 100%; height: 100%; pointer-events: none; }