@layer blocks {
  /* Development-only tool at /mgm/og-image-generator. */
  .og-generator {
    padding-block: var(--space-l);
  }

  /* The canvas keeps its intrinsic pixel buffer (up to 3840×2856);
     scale it into the preview area while preserving aspect ratio. */
  .og-generator canvas {
    display: block;
    max-inline-size: 100%;
    max-block-size: 70dvh;
    inline-size: auto;
    block-size: auto;
    border: var(--border-width) var(--border-style) var(--color-border);
    border-radius: var(--radius-m);
  }
}