* { margin:0; padding:0; box-sizing:border-box; }
:root { color-scheme:dark; }   /* sin esto Safari iOS enmarca la página en blanco */
html,body {
  width:100%; height:100%; overflow:hidden;
  background:#05070f; touch-action:none;
  overscroll-behavior:none;
  -webkit-touch-callout:none; -webkit-user-select:none; user-select:none;
  -webkit-tap-highlight-color:transparent;
}
body { display:flex; justify-content:center; align-items:center; }
#wrap {
  position:fixed; inset:0;
  display:flex; justify-content:center; align-items:center;
  background:
    radial-gradient(120% 80% at 50% 0%, #12213f 0%, #070b16 60%, #03040a 100%);
}
canvas {
  display:block; image-rendering:auto;
  touch-action:none; user-select:none;
  box-shadow:0 0 60px rgba(108,169,221,.25), 0 0 0 1px rgba(255,255,255,.04);
}