/* Shared vertical spine layout for 01-* variants */
.stage {
  position: relative;
  width: min(var(--spine-width, 460px), 100%);
  min-height: calc(100vh - 56px);
  margin: 0 auto;
  padding: 24px 0 80px;
}
.spine {
  position: absolute;
  left: 50%;
  top: 6%;
  bottom: 8%;
  width: var(--spine-thickness, 2px);
  transform: translateX(-50%);
  background: var(--spine-gradient, linear-gradient(180deg, #fde047, #60a5fa 40%, #818cf8));
  opacity: var(--spine-opacity, 0.45);
  filter: blur(var(--spine-blur, 0.3px));
  box-shadow: var(--spine-shadow, none);
}
.spine-ghost {
  position: absolute;
  left: 50%;
  top: 6%;
  bottom: 8%;
  width: var(--spine-ghost-width, 0);
  transform: translateX(-50%);
  background: var(--spine-ghost-gradient, transparent);
  opacity: var(--spine-ghost-opacity, 0);
  filter: blur(8px);
}
.links {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}
.links .trunk {
  fill: none;
  stroke: var(--link-trunk, rgba(250, 204, 21, 0.45));
  stroke-width: var(--link-trunk-width, 2.5);
}
.links .leaf {
  fill: none;
  stroke: var(--link-leaf, rgba(96, 165, 250, 0.28));
  stroke-width: var(--link-leaf-width, 1.5);
  stroke-dasharray: var(--link-leaf-dash, 4 6);
}
.node {
  position: absolute;
  left: var(--x);
  top: var(--y);
  transform: translate(-50%, -50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}
.orb {
  width: var(--s, 58px);
  height: var(--s, 58px);
  border-radius: 999px;
  display: grid;
  place-items: center;
  font-size: calc(var(--s, 58px) * 0.38);
  border: var(--orb-border, 2px solid rgba(147, 197, 253, 0.55));
  background: var(--orb-bg, radial-gradient(circle at 30% 25%, rgba(255, 255, 255, 0.18), transparent 42%), #0f172a);
  box-shadow: var(--orb-shadow, 0 0 24px rgba(59, 130, 246, 0.32));
  overflow: hidden;
}
.root .orb { --s: 92px; }
.section .orb { --s: 64px; }
.cap {
  font-size: var(--cap-size, 11px);
  font-weight: 600;
  color: var(--cap-color, #cbd5e1);
  text-align: center;
  max-width: var(--cap-width, 96px);
  line-height: 1.25;
}
.preview-mini {
  width: 72%;
  height: 72%;
  border-radius: 8px;
  background: linear-gradient(180deg, rgba(125, 211, 252, 0.35), rgba(15, 23, 42, 0.9));
  font-size: 9px;
  color: #bae6fd;
  padding: 4px;
  line-height: 1.3;
  text-align: left;
}