/* Shared layout for SGT thought-experiment canvases — preserves 3:2 aspect, no stretch */
.canvas-aspect {
  width: 100%;
  max-width: 600px;
  margin: 0 auto 16px;
  aspect-ratio: 600 / 400;
  border-radius: 8px;
  border: 1px solid var(--border, #1e1e2e);
  overflow: hidden;
  background: #0a0a0f;
}
.canvas-aspect canvas {
  display: block;
  width: 100%;
  height: 100%;
  touch-action: none;
}
.demo-disclaimer {
  font-size: 0.78rem;
  color: #a8a8c0;
  background: rgba(255, 180, 0, 0.06);
  border: 1px solid rgba(255, 180, 0, 0.22);
  border-radius: 6px;
  padding: 10px 12px;
  margin-bottom: 14px;
  line-height: 1.65;
}
.demo-disclaimer strong { color: #e8c878; }