.is-embedded .intro,.is-embedded #diagnostic,.is-embedded .preview-label,.is-embedded #end-preview {display:none!important}
.intro {background:#0c152a}
.is-embedded:not(.is-running) body::after {
  content:""; position:fixed; inset:0; z-index:100;
  background:linear-gradient(180deg,#0b122222 0%,#0b1222 100%),url('./art.png') center 30%/cover;
}
.is-embedded body {background:#0b1222}