.taxonomy-graph-panel {
  margin-top: 0.25rem;
  border: 1px solid var(--line-strong);
  background: var(--surface);
}

.taxonomy-graph-panel > summary {
  display: flex;
  align-items: baseline;
  gap: 0.4rem;
  min-height: 1.4rem;
  padding: 0.16rem 0.36rem;
  cursor: pointer;
  background: color-mix(in srgb, var(--accent) 7%, var(--surface-muted));
  font: 700 0.78rem/1.2 var(--font-interface);
}

.taxonomy-graph-panel > summary::before {
  content: "▸";
  color: var(--accent);
  font-family: var(--font-technical);
}

.taxonomy-graph-panel[open] > summary::before {
  content: "▾";
}

.taxonomy-graph-panel > summary span:last-child {
  margin-left: auto;
  color: var(--muted);
  font-weight: 400;
}

.taxonomy-graph-viewport {
  position: relative;
  border-top: 1px solid var(--line-strong);
  background: var(--paper);
}

.taxonomy-graph-canvas {
  overflow-x: auto;
}

.taxonomy-graph-overflow {
  position: absolute;
  z-index: 3;
  top: 0;
  bottom: 0;
  display: grid;
  width: 1.35rem;
  grid-template-rows: minmax(0, 1fr) auto minmax(0, 1fr);
  justify-items: center;
  color: var(--muted);
  background: color-mix(in srgb, var(--surface-muted) 88%, transparent);
  font: 700 0.65rem/1 var(--font-interface);
  letter-spacing: 0.025em;
  pointer-events: none;
}

.taxonomy-graph-overflow[hidden] {
  display: none;
}

.taxonomy-graph-overflow-label {
  writing-mode: vertical-rl;
  text-orientation: mixed;
}

.taxonomy-graph-overflow-chevrons {
  display: flex;
  width: 1.08rem;
  height: 0.55rem;
  align-items: center;
  justify-content: center;
  align-self: center;
  gap: 0.06rem;
  writing-mode: horizontal-tb;
}

.taxonomy-graph-overflow-chevron {
  display: block;
  width: 0.16rem;
  height: 0.48rem;
  flex: 0 0 0.16rem;
  background: currentcolor;
  clip-path: polygon(0 0, 100% 50%, 0 100%, 0 76%, 52% 50%, 0 24%);
}

.taxonomy-graph-overflow-chevrons-left .taxonomy-graph-overflow-chevron {
  transform: scaleX(-1);
}

.taxonomy-graph-overflow-left {
  left: 0;
  border-right: 1px solid var(--line);
}

.taxonomy-graph-overflow-right {
  right: 0;
  border-left: 1px solid var(--line);
}

.taxonomy-graph-svg {
  display: block;
}

.taxonomy-graph-layer-rules line {
  stroke: var(--line);
  stroke-width: 1;
  vector-effect: non-scaling-stroke;
}

.taxonomy-graph-layer-labels text {
  fill: var(--muted);
  font: 400 8px/1 var(--font-interface);
  letter-spacing: 0.035em;
  opacity: 0.72;
}

.taxonomy-graph-edge {
  stroke: color-mix(in srgb, var(--ink) 55%, var(--line));
  stroke-width: 1.35;
  vector-effect: non-scaling-stroke;
}

.taxonomy-graph-boundary-edge {
  stroke: var(--muted);
  stroke-width: 1;
  stroke-dasharray: 4 4;
  opacity: 0.72;
  vector-effect: non-scaling-stroke;
}

.taxonomy-graph-arrowhead {
  fill: color-mix(in srgb, var(--ink) 55%, var(--line));
}

.taxonomy-graph-edge-source-ecz {
  stroke: var(--ecz-blue);
}

.taxonomy-graph-arrowhead-ecz {
  fill: var(--ecz-blue);
}

.taxonomy-graph-boundary-arrowhead {
  fill: var(--muted);
  opacity: 0.72;
}

.taxonomy-graph-node rect {
  fill: var(--surface);
  stroke: var(--line-strong);
  stroke-width: 1.2;
  vector-effect: non-scaling-stroke;
}

.taxonomy-graph-node-focus rect {
  fill: color-mix(in srgb, var(--accent) 10%, var(--surface));
  stroke: var(--accent);
  stroke-width: 1.8;
}

.taxonomy-graph-node-status-official rect {
  stroke: var(--tag-node-colour, var(--accent));
}

.taxonomy-graph-node-source-ecz rect {
  fill: color-mix(in srgb, var(--ecz-blue) 9%, var(--surface));
  stroke: var(--ecz-blue);
  stroke-dasharray: 4 2;
}

.taxonomy-graph-node-source-ecz.taxonomy-graph-node-focus rect {
  fill: color-mix(in srgb, var(--ecz-blue) 16%, var(--surface));
  stroke-width: 1.8;
}

.taxonomy-graph-node-status-retired rect {
  fill: var(--surface-muted);
  stroke: var(--muted);
  stroke-dasharray: 4 3;
}

.taxonomy-graph-node text {
  fill: var(--ink);
  font: 400 9.5px/1.1 var(--font-interface);
  pointer-events: none;
}

.taxonomy-graph-node-focus text {
  font-weight: 700;
}

.taxonomy-graph-node-status-retired .taxonomy-graph-node-label {
  fill: var(--muted);
  text-decoration: line-through;
}

.taxonomy-graph-node-deleted-note {
  fill: var(--muted);
  font-size: 8px;
  font-weight: 400;
}

.taxonomy-graph-node:hover rect,
.taxonomy-graph-node:focus-visible rect {
  stroke: var(--link);
  stroke-width: 2;
}

.taxonomy-graph-node:focus-visible {
  outline: none;
}

.taxonomy-graph-boundary-stub rect {
  fill: var(--surface-muted);
  stroke: var(--muted);
  stroke-dasharray: 3 3;
  opacity: 0.86;
}

.taxonomy-graph-boundary-stub text {
  fill: var(--muted);
  font: 700 7.5px/1 var(--font-interface);
  text-anchor: middle;
}

.taxonomy-graph-noscript {
  margin: 0;
  padding: 0.7rem;
  border-top: 1px solid var(--line);
}