body {
    margin: 0;
    background: linear-gradient(135deg, #0f172a, #1e3a5f, #0f172a);
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    overflow: hidden;
    font-family: 'Segoe UI', Arial, sans-serif;
}
canvas {
    border: 3px solid rgba(251, 146, 60, 0.3);
    border-radius: 16px;
    box-shadow: 0 0 60px rgba(251, 146, 60, 0.2);
}