body{margin:0;background:linear-gradient(135deg,#0a1628,#1a2a4a,#0a1628);display:flex;justify-content:center;align-items:center;height:100vh;overflow:hidden}canvas{border:3px solid rgba(34,197,94,.3);border-radius:16px;box-shadow:0 0 60px rgba(34,197,94,.2)}