body { background: #020617; }
.section-block {
  position: absolute;
  left: 50%;
  top: var(--block-top, 22%);
  transform: translate(-50%, -50%);
  width: min(420px, 94vw);
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 8px;
}
.section-block .rail {
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: stretch;
}
.section-block .rail.left { align-items: flex-end; padding-right: 8px; }
.section-block .rail.right { align-items: flex-start; padding-left: 8px; }
.section-block .center { display: flex; flex-direction: column; align-items: center; gap: 8px; }
.rail-topic {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 10px;
  color: #cbd5e1;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid rgba(96,165,250,.25);
  background: rgba(15,23,42,.75);
  max-width: 130px;
}
.rail-topic .mini-orb {
  width: 28px; height: 28px; border-radius: 999px;
  display: grid; place-items: center; font-size: 12px; flex-shrink: 0;
  border: 1px solid rgba(147,197,253,.4);
  background: #0f172a;
}
.section-block .center .orb { --s: 64px; border-color: rgba(129,140,248,.65); }
.root-wrap {
  position: absolute;
  left: 50%;
  top: 8%;
  transform: translate(-50%, -50%);
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}
.root-wrap .orb { --s: 92px; border-color: rgba(250,204,21,.75); box-shadow: 0 0 36px rgba(250,204,21,.25); }
.spine { z-index: 0; }
.section-block { z-index: 1; }