: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:#0a0a0a;color:#fafafa}.shell{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:1rem;-webkit-user-select:none;user-select:none}canvas{border-radius:.5rem;box-shadow:0 0 30px #00000080}.title{font-size:2rem;font-weight:700;margin-bottom:.5rem;letter-spacing:-.02em;background:linear-gradient(135deg,#4ade80,#22d3ee);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.instructions{color:#ffffff80;font-size:.85rem;margin-bottom:1rem}