.scd-iso {
  position: relative; width: 200px; height: 180px; margin: 6px auto 0;
  transform: rotateX(55deg) rotateZ(-30deg); transform-style: preserve-3d;
}
.scd-iso__c {
  position: absolute; left: 50%; top: 50%;
  width: 130px; height: 28px; margin: -14px 0 0 -65px;
  background: linear-gradient(180deg, #4a4a52 0%, #2a2a32 100%);
  color: #cad3da;
  display: flex; align-items: center; gap: 10px;
  padding: 0 12px;
  font: 700 10px ui-monospace, monospace;
  letter-spacing: 0.16em;
  border: 1px solid #1a1a20;
  border-radius: 2px;
  box-shadow: 0 4px 0 #1a1a20, inset 0 1px 0 #6a6a72;
  transform: translateZ(calc(var(--i) * 28px));
}
.scd-iso__led {
  width: 6px; height: 6px; border-radius: 50%;
  background: #3eff7f;
  box-shadow: 0 0 6px #3eff7f, inset 0 0 1px rgba(255,255,255,0.6);
}