/* style.css */
body {
  margin: 0; padding: 20px; font-family: Arial, sans-serif;
  text-align: center; background: #0a0a1a; color: #fff;
}
h1 { margin-bottom: 10px; }
canvas {
  border: 4px solid #4a7; display: block; margin: 0 auto;
  image-rendering: pixelated; background: #000;
}
p { margin-top: 10px; font-size: 0.9em; }