.citation-network {
  --cn-paper: #ffffff;
  --cn-ink: #000000;
  --cn-mute: #6b6b6b;
  --cn-hair: #d4d4d4;
  --cn-soft: #f2f2f2;
  --cn-edge: #9e9e9e;
  --cn-o-seed: #000000;
  --cn-o-search: #262626;
  --cn-o-backward: #5e5e5e;
  --cn-o-forward: #8c8c8c;
  --cn-o-cocited: #b8b8b8;
  --cn-o-agent: #404040;
  --cn-rel-strong: #000000;
  --cn-rel: #4d4d4d;
  --cn-u: 8px;
  --cn-font: Helvetica, "Helvetica Neue", Arial, sans-serif;
  --cn-height: 640px;
  box-sizing: border-box;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: calc(var(--cn-u) * 4);
  font-family: var(--cn-font);
  font-size: 13px;
  line-height: 1.5;
  color: var(--cn-ink);
  background: var(--cn-paper);
  -webkit-font-smoothing: antialiased;
}
.citation-network *, .citation-network *::before, .citation-network *::after { box-sizing: border-box; }
.citation-network.cn-no-panel { grid-template-columns: minmax(0, 1fr); }
.citation-network.cn-no-panel .cn-panel { display: none; }

.citation-network .cn-graph { position: relative; height: var(--cn-height); border-top: 2px solid var(--cn-ink); border-bottom: 1px solid var(--cn-hair); min-width: 0; }
.citation-network .cn-cy { position: absolute; inset: 0; }
.citation-network .cn-toolbar { position: absolute; top: var(--cn-u); left: 0; right: 0; display: flex; align-items: center; gap: var(--cn-u); pointer-events: none; z-index: 1; }
.citation-network .cn-toolbar button { pointer-events: auto; }
.citation-network .cn-status { margin-right: auto; background: var(--cn-paper); padding: 2px 8px 2px 0; font-size: 11px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
.citation-network .cn-caption { position: absolute; bottom: var(--cn-u); left: 0; font-size: 11px; color: var(--cn-mute); pointer-events: none; background: var(--cn-paper); padding: 2px 8px 2px 0; }

.citation-network button {
  font: 700 11px var(--cn-font); letter-spacing: .04em; color: var(--cn-ink); background: var(--cn-paper);
  border: 1px solid var(--cn-ink); border-radius: 0; padding: 4px 10px; cursor: pointer;
}
.citation-network button:hover { background: var(--cn-ink); color: var(--cn-paper); }
.citation-network button.cn-primary { background: var(--cn-ink); color: var(--cn-paper); }
.citation-network button.cn-primary:hover { background: var(--cn-paper); color: var(--cn-ink); }
.citation-network button[hidden] { display: none; }
.citation-network select, .citation-network input[type=number] {
  font: 12px var(--cn-font); color: var(--cn-ink); background: var(--cn-paper);
  border: 0; border-bottom: 1px solid var(--cn-ink); border-radius: 0; padding: 2px 0; outline: none;
}
.citation-network select:focus, .citation-network input[type=number]:focus { border-bottom-width: 2px; }
.citation-network input[type=number] { width: 48px; font-variant-numeric: tabular-nums; }
.citation-network input[type=range] { accent-color: var(--cn-ink); }

.citation-network .cn-panel { height: var(--cn-height); overflow-y: auto; min-width: 0; }
.citation-network .cn-h {
  font-size: 11px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase;
  border-top: 2px solid var(--cn-ink); padding-top: var(--cn-u); margin: 0 0 var(--cn-u);
}
.citation-network .cn-about p { margin: 0 0 calc(var(--cn-u) * 2); font-size: 14px; line-height: 1.5; }
.citation-network .cn-stats { display: flex; gap: calc(var(--cn-u) * 3); margin-bottom: var(--cn-u); }
.citation-network .cn-stats div { font-size: 11px; color: var(--cn-mute); }
.citation-network .cn-stats b { display: block; font-size: 22px; line-height: 1.1; color: var(--cn-ink); letter-spacing: -0.02em; font-variant-numeric: tabular-nums; }
.citation-network .cn-sub { font-size: 11px; color: var(--cn-mute); font-variant-numeric: tabular-nums; }

.citation-network .cn-tabs { display: flex; gap: calc(var(--cn-u) * 2); border-bottom: 1px solid var(--cn-ink); margin: calc(var(--cn-u) * 3) 0 calc(var(--cn-u) * 2); }
.citation-network .cn-tabs button {
  border: 0; border-bottom: 3px solid transparent; background: none; color: var(--cn-mute);
  padding: var(--cn-u) 0; margin-bottom: -1px; text-transform: uppercase; letter-spacing: .06em;
}
.citation-network .cn-tabs button:hover { background: none; color: var(--cn-ink); }
.citation-network .cn-tabs button.on { color: var(--cn-ink); border-bottom-color: var(--cn-ink); }
.citation-network .cn-tab { display: none; }
.citation-network .cn-tab.on { display: block; }

.citation-network .cn-row { display: flex; align-items: center; justify-content: space-between; gap: var(--cn-u); margin: var(--cn-u) 0; font-size: 12px; }
.citation-network .cn-btns { display: flex; gap: var(--cn-u); margin-top: var(--cn-u); flex-wrap: wrap; }
.citation-network .cn-seg { display: flex; margin: var(--cn-u) 0; }
.citation-network .cn-seg button { flex: 1; }
.citation-network .cn-seg button + button { border-left: 0; }
.citation-network .cn-seg button.on { background: var(--cn-ink); color: var(--cn-paper); }
.citation-network .cn-chips { display: flex; flex-wrap: wrap; gap: 4px; margin: var(--cn-u) 0; min-height: 22px; }
.citation-network .cn-chip { border: 1px solid var(--cn-ink); padding: 0 6px; font-size: 11px; cursor: pointer; max-width: 100%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.citation-network .cn-chip::after { content: " ×"; }
.citation-network .cn-chip:hover { background: var(--cn-ink); color: var(--cn-paper); }
.citation-network .cn-player { display: flex; align-items: center; gap: 4px; margin-top: var(--cn-u); }
.citation-network .cn-player input[type=range] { flex: 1; min-width: 0; }
.citation-network .cn-visits { list-style: none; padding: 0; margin: var(--cn-u) 0 0; max-height: 240px; overflow-y: auto; border-top: 1px solid var(--cn-hair); }
.citation-network .cn-visits li { display: flex; gap: 6px; padding: 3px 0; border-bottom: 1px solid var(--cn-hair); cursor: pointer; opacity: .4; font-size: 12px; }
.citation-network .cn-visits li.done { opacity: 1; }
.citation-network .cn-visits li.cur { background: var(--cn-soft); }
.citation-network .cn-visits .ord { font-weight: 700; min-width: 22px; text-align: right; font-variant-numeric: tabular-nums; }
.citation-network .cn-visits .dep { color: var(--cn-mute); min-width: 22px; font-variant-numeric: tabular-nums; }
.citation-network .cn-visits .t { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.citation-network .cn-msg { font-size: 12px; color: var(--cn-ink); font-weight: 700; min-height: 0; }

.citation-network .cn-detail h3 { font-size: 15px; line-height: 1.35; margin: 0 0 6px; }
.citation-network .cn-detail .meta { color: var(--cn-mute); margin-bottom: var(--cn-u); font-size: 12px; }
.citation-network .cn-badges { display: flex; flex-wrap: wrap; gap: 4px; margin-bottom: var(--cn-u); }
.citation-network .cn-badge { border: 1px solid var(--cn-hair); padding: 0 6px; font-size: 11px; }
.citation-network .cn-badge.strong { border-color: var(--cn-ink); font-weight: 700; }
.citation-network .cn-badge.inv { background: var(--cn-ink); border-color: var(--cn-ink); color: var(--cn-paper); font-weight: 700; }
.citation-network .cn-detail h4 { font-size: 11px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; margin: calc(var(--cn-u) * 2) 0 4px; }
.citation-network .cn-detail ul { padding-left: 14px; margin: 0; font-size: 12px; }
.citation-network .cn-detail li { margin: 3px 0; }
.citation-network a, .citation-network .cn-link { color: var(--cn-ink); text-decoration: underline; text-underline-offset: 2px; text-decoration-thickness: 1px; cursor: pointer; }
.citation-network a:hover, .citation-network .cn-link:hover { text-decoration-thickness: 2px; }
.citation-network .cn-rel { font-size: 11px; color: var(--cn-mute); }
.citation-network .cn-muted { color: var(--cn-mute); font-size: 12px; }

.citation-network .cn-legend div { display: flex; align-items: center; gap: var(--cn-u); margin: 4px 0; font-size: 12px; }
.citation-network .cn-legend svg { flex: none; }
.citation-network .cn-legend .n { margin-left: auto; color: var(--cn-mute); font-variant-numeric: tabular-nums; }

@media (max-width: 860px) {
  .citation-network { grid-template-columns: minmax(0, 1fr); gap: calc(var(--cn-u) * 3); }
  .citation-network .cn-graph { height: min(var(--cn-height), 70vh); }
  .citation-network .cn-panel { height: auto; overflow: visible; }
}