body {
   margin: 0;
   min-height: 100vh;
   display: flex;
   flex-direction: column;
   align-items: center;
   justify-content: center;
   gap: 12px;
   background: #1a1a1a;
   color: #e0e0e0;
   font-family: system-ui, sans-serif;
}
canvas {
   box-shadow: 0 0 24px rgba(0, 0, 0, 0.6);
}
p {
   margin: 0;
   opacity: 0.8;
}