body{margin:0;background:linear-gradient(135deg,#1e1a3a,#3b2d6e,#1e1a3a);display:flex;justify-content:center;align-items:center;height:100vh;overflow:hidden}canvas{border:3px solid rgba(251,113,133,.3);border-radius:16px;box-shadow:0 0 60px rgba(251,113,133,.2)}