.article-body .abelian-flow { margin: 2rem 0; }
.abelian-flow [hidden] { display: none; }
.abelian-flow-controls { display: flex; flex-wrap: wrap; align-items: center; gap: .6rem; margin: 1rem 0; }
.abelian-flow-controls select, .abelian-flow-controls button {
  font: inherit; color: var(--text-primary); background: var(--bg-elevated);
  border: 1px solid var(--border-focus); border-radius: .3rem; padding: .35rem .5rem;
}
.abelian-flow-controls select { width: 100%; min-width: 0; }
.abelian-flow-controls button { cursor: pointer; }
.abelian-flow-controls button:disabled { opacity: .45; cursor: default; }
.article-body .abelian-flow-figure { margin: 1rem 0; }
.abelian-flow-canvas {
  position: relative; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 3.5rem; padding: .5rem 0; align-items: center;
}
.abelian-flow-dependencies { display: grid; gap: .65rem; }
.abelian-flow-card {
  position: relative; z-index: 1; min-width: 0; padding: .6rem .7rem;
  border: 1px solid var(--border-focus); border-left: 3px solid #9da3f8;
  border-radius: .35rem; background: var(--bg-surface); text-align: left;
}
.abelian-flow-card.abelian-flow-definition { border-left-color: #78b8e8; }
.abelian-flow-card.abelian-flow-example { border-left-color: #7ebd9e; }
.abelian-flow-current .abelian-flow-card { border-color: var(--accent-hover); }
.abelian-flow-drill {
  display: block; padding: 0; width: 100%; text-align: left; border: 0;
  font: inherit; color: var(--text-primary); background: transparent; cursor: pointer;
}
.abelian-flow-drill:hover .abelian-flow-title { color: var(--accent-hover); text-decoration: underline; }
.abelian-flow-label { display: block; color: var(--text-secondary); font-size: .72rem; line-height: 1.4; margin-bottom: .15rem; }
.abelian-flow-title { display: block; font-size: .86rem; line-height: 1.4; overflow-wrap: anywhere; }
.abelian-flow-read { display: inline-block; font-size: .7rem; margin-top: .4rem; }
.abelian-flow-edges { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; }
.abelian-flow-edges g path { fill: none; stroke: #b9beff; stroke-width: 2.5; marker-end: url(#abelian-flow-arrow); }
.abelian-flow-edges marker path { fill: #b9beff; }
.abelian-flow-selection, .abelian-flow-background { color: var(--text-secondary); font-size: .85rem; }
.abelian-flow :is(a, button, select):focus-visible { outline: 2px solid var(--accent-hover); outline-offset: 3px; }
@media (max-width: 540px) {
  .abelian-flow-canvas { gap: 1.8rem; }
  .abelian-flow-card { padding: .5rem; }
  .abelian-flow-title { font-size: .78rem; }
}
@media print {
  .abelian-flow-controls { display: none; }
  .abelian-flow-canvas { break-inside: avoid; }
}