html, body {
  margin: 0;
  height: 100%;
  overflow: hidden;
  background: #ffffff;
}
#stage {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  pointer-events: none;
}
#labels {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}
.lbl {
  position: absolute;
  transform: translate(-50%, -50%);
  font: 500 10px/1 ui-monospace, "IBM Plex Mono", "Roboto Mono", Menlo, monospace;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #8a8a8a;
  white-space: nowrap;
  opacity: 0;
  transition: opacity 0.4s ease-out;
}
.lbl.on { opacity: 1; }
.lbl.hi {
  color: #000000;
  font-weight: 700;
  background: rgba(255, 255, 255, 0.9);
  padding: 3px 7px;
}
.lbl.pink, .lbl.amber { color: #000000; }
.lbl.cyan { color: #555555; }
.lbl.violet { color: #8a8a8a; }
.lbl.num {
  color: #333333;
  text-transform: none;
  letter-spacing: 0.06em;
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid #e2e2e2;
  padding: 3px 7px;
}
.lbl.num.pink { color: #000000; }