:root{color-scheme:dark;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;line-height:1.5}*{box-sizing:border-box}html,body,#root{margin:0;min-height:100vh;background:#1a1a2e;color:#fafafa}.game-shell{min-height:100vh;display:grid;place-items:center;padding:1rem}canvas{border-radius:8px;box-shadow:0 0 40px #4ec0ca4d}