/* The page's own style: the canvas fills it, and nothing else is on it — on the studio's dark, the background the
   app starts with. (What the app shows is styled in `screens/`.) */
html, body { margin: 0; height: 100%; overflow: hidden; background: #15171c; }
canvas { position: fixed; inset: 0; width: 100%; height: 100%; display: block; }