:root {
  --bg: #0a0014;
  --fg: #f8e8c8;
  --muted: #d2c5a8;
  --accent: #ff9800;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: radial-gradient(1000px 600px at 50% 20%, #2b003e, var(--bg));
  background-image: url('halloween_bg.png');
  background-size: cover;
  background-position: center;
  color: var(--fg);
  font-family: 'Segoe UI', 'Microsoft JhengHei', system-ui, sans-serif;
}
.wrap {
  max-width: 860px;
  margin: 16px auto 40px;
  padding: 0 16px;
  text-align: center;
}
h1 { font-size: 24px; font-weight: 800; letter-spacing: .5px; margin: 8px 0 12px; color: var(--accent);
  text-shadow: 0 0 10px rgba(255,152,0,.8), 0 0 18px rgba(255,87,34,.6);
}
canvas {
  background: rgba(10, 0, 20, 0.92);
  width: 100%;
  height: auto;
  box-shadow: 0 12px 30px rgba(0,0,0,.45), 0 0 28px rgba(255,152,0,.25);
  border: 2px solid #ff9800;
  border-radius: 12px;
}
.help { color: var(--muted); font-size: 14px; margin-top: 10px; }