/* Focused Week 6 document-vector explorables. Colors come from tokens.css. */
.query-strip{display:flex;align-items:center;gap:10px;margin:2px 0 14px;color:var(--text-secondary)}
.query-strip .query-label{font-size:11.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--text-muted)}
.query-strip code{padding:4px 8px;border:1px solid var(--grid);border-radius:6px;background:var(--page);color:var(--text-primary);font:13px/1.3 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
.idf-strip{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin:0 0 16px}
.idf-card{border-top:2px solid var(--grid);padding:9px 2px 5px}.idf-card.active{border-top-color:var(--accent)}
.idf-term{display:flex;justify-content:space-between;gap:8px;align-items:baseline;margin-bottom:3px;color:var(--text-primary);font:600 13px/1.3 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
.idf-meta{color:var(--text-muted);font-size:11.5px}.idf-value{color:var(--text-secondary);font-variant-numeric:tabular-nums}
.tfidf-docs{display:grid;gap:8px}.tfidf-row{display:grid;grid-template-columns:42px minmax(210px,1.5fr) repeat(3,minmax(76px,.55fr)) minmax(110px,.7fr);gap:8px;align-items:center;padding:9px 10px;border:1px solid var(--grid);border-radius:8px;background:var(--page)}
.tfidf-row.best{border-color:var(--accent)}.doc-id{color:var(--text-primary);font-weight:600}.doc-text{color:var(--text-secondary);line-height:1.35}
.weight-cell{min-width:0}.weight-cell .term{display:block;color:var(--text-muted);font-size:10.5px;text-transform:uppercase;letter-spacing:.05em}.weight-cell .weight{display:block;margin-top:2px;color:var(--text-primary);font:12.5px/1.3 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-variant-numeric:tabular-nums}
.score-cell .score-label{display:flex;justify-content:space-between;gap:6px;color:var(--text-muted);font-size:10.5px;text-transform:uppercase;letter-spacing:.05em}.score-cell .score-num{color:var(--text-primary);font-variant-numeric:tabular-nums}
.score-track{height:8px;margin-top:5px;overflow:hidden;border-radius:5px;background:var(--grid)}.score-track span{display:block;height:100%;border-radius:5px;background:var(--series-1)}
.stage-note{margin:12px 0 0;padding-top:10px;border-top:1px solid var(--grid);color:var(--text-muted);font-size:12.5px;line-height:1.45}
.cosine-layout{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(220px,.75fr);gap:18px;align-items:start}.cosine-plot{min-height:390px;border:1px solid var(--grid);border-radius:8px;background:var(--page)}.cosine-plot svg{width:100%;height:390px;display:block}.cosine-side{display:grid;gap:10px}
.cosine-big{padding:12px;border:1px solid var(--grid);border-radius:8px;background:var(--page)}.cosine-big .label{color:var(--text-muted);font-size:10.5px;text-transform:uppercase;letter-spacing:.06em}.cosine-big .value{margin-top:3px;color:var(--text-primary);font-size:25px;font-weight:600;font-variant-numeric:tabular-nums}
.cosine-formula{padding:10px 11px;border:1px solid var(--grid);border-radius:8px;background:var(--page);color:var(--text-secondary);font:12px/1.5 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}.cosine-note{color:var(--text-muted);font-size:12px;line-height:1.45}.preset-row{display:flex;gap:7px;flex-wrap:wrap;margin-bottom:10px}
.cos-vector{stroke-width:4;fill:none}.cos-vector.vector-a{stroke:var(--series-1)}.cos-vector.vector-b{stroke:var(--series-2)}.cos-arc{fill:none;stroke:var(--text-muted);stroke-width:1.5}.cos-label{font-size:13px;font-weight:600}.cos-label.label-a{fill:var(--series-1)}.cos-label.label-b{fill:var(--series-2)}.cos-theta{fill:var(--text-muted);font-size:16px;font-style:italic}.cos-small{fill:var(--text-muted);font-size:11.5px}
.analogy-shell{display:grid;gap:12px}.analogy-equation{display:flex;justify-content:center;flex-wrap:wrap;gap:8px;align-items:baseline;padding:8px 0 4px;color:var(--text-primary);font:600 18px/1.4 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}.analogy-equation .muted{color:var(--text-muted);font-weight:400}.analogy-plot{border:1px solid var(--grid);border-radius:8px;background:var(--page)}.analogy-plot svg{width:100%;height:390px;display:block}.analogy-caption{margin:0;color:var(--text-muted);font-size:12.5px;line-height:1.45;text-align:center}
.analogy-point{stroke:var(--surface-1);stroke-width:2}.analogy-point.base{fill:var(--series-1)}.analogy-point.royal{fill:var(--series-2)}.analogy-point.answer{fill:var(--accent)}.analogy-label{font-size:13px;font-weight:600}.analogy-label.base{fill:var(--series-1)}.analogy-label.royal{fill:var(--series-2)}.analogy-label.answer{fill:var(--accent)}.analogy-arrow{stroke:var(--accent);stroke-width:3;fill:none}.analogy-result-guide{stroke:var(--accent);stroke-width:5;fill:none;opacity:.28}.analogy-ring{fill:none;stroke:var(--accent);stroke-width:2}.analogy-relation{fill:var(--text-muted);font-size:12px}.analogy-topline{fill:var(--text-secondary);font-size:13px;font-weight:600}
@media(max-width:800px){.tfidf-row{grid-template-columns:38px 1fr}.weight-cell,.score-cell{grid-column:2}.weight-cell{display:grid;grid-template-columns:70px 1fr;align-items:center}.weight-cell .weight{margin-top:0}.cosine-layout{grid-template-columns:1fr}}
@media(max-width:560px){.idf-strip{grid-template-columns:1fr}}

/* Week 6 refinement: stronger TF-IDF and cosine pedagogy */
.explainer-topnote {
  margin: 0 0 14px;
  padding: 11px 13px;
  border: 1px solid var(--grid);
  border-radius: 8px;
  background: var(--surface-1);
  color: var(--text-secondary);
  font-size: 12.8px;
  line-height: 1.5;
}
.explainer-topnote code {
  font: 12.5px/1.3 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
.tfidf-top-controls {
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
}
.query-strip {
  flex-wrap: wrap;
}
.query-hint {
  font-size: 12px;
  color: var(--text-muted);
}
.idf-role {
  margin-top: 5px;
  color: var(--text-secondary);
  font-size: 12px;
  line-height: 1.45;
}
.idf-badge {
  display: inline-block;
  margin-top: 8px;
  padding: 3px 7px;
  border-radius: 999px;
  background: var(--surface-1);
  color: var(--accent);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: .03em;
  text-transform: uppercase;
}
.tfidf-compare-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(250px, .95fr);
  gap: 16px;
  align-items: start;
}
.tfidf-side {
  display: grid;
  gap: 12px;
}
.progress-panel,
.takeaway-panel,
.shared-panel {
  padding: 12px;
  border: 1px solid var(--grid);
  border-radius: 8px;
  background: var(--page);
}
.panel-kicker {
  margin: 0 0 4px;
  color: var(--text-muted);
  font-size: 10.5px;
  letter-spacing: .06em;
  text-transform: uppercase;
}
.panel-title {
  margin: 0 0 10px;
  color: var(--text-primary);
  font-weight: 600;
  line-height: 1.4;
}
.progress-table {
  width: 100%;
  border-collapse: collapse;
  font: 12.5px/1.4 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
.progress-table th,
.progress-table td {
  padding: 7px 8px;
  border: 1px solid var(--grid);
  text-align: center;
}
.progress-table th {
  background: var(--surface-1);
  color: var(--text-secondary);
}
.progress-table tbody th {
  text-align: left;
  color: var(--text-primary);
  font-weight: 600;
  background: var(--page);
}
.progress-table .current-stage {
  background: rgba(86, 68, 255, .07);
}
.progress-table td.stage-best {
  box-shadow: inset 0 0 0 1.5px var(--accent);
  font-weight: 600;
  color: var(--text-primary);
}
.progress-note {
  margin: 8px 0 0;
  color: var(--text-muted);
  font-size: 11.8px;
  line-height: 1.45;
}
.doc-main {
  min-width: 0;
}
.doc-sub {
  margin-top: 5px;
  color: var(--text-muted);
  font-size: 11.5px;
  line-height: 1.4;
}
.query-pill {
  display: inline-block;
  margin-right: 5px;
  margin-bottom: 3px;
  padding: 2px 7px;
  border: 1px solid var(--grid);
  border-radius: 999px;
  background: var(--surface-1);
  color: var(--text-secondary);
  font: 11px/1.2 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
.query-pill.muted {
  color: var(--text-muted);
}
.takeaway-list {
  margin: 0;
  padding-left: 18px;
  color: var(--text-secondary);
  font-size: 12.7px;
  line-height: 1.55;
}
.takeaway-list li + li {
  margin-top: 6px;
}
.plot-caption {
  margin: 8px 2px 0;
  color: var(--text-muted);
  font-size: 11.9px;
  line-height: 1.45;
}
.cosine-plot {
  min-height: 420px;
}
.cosine-plot svg {
  height: 420px;
}
.cos-doc-card {
  padding: 12px;
  border: 1px solid var(--grid);
  border-radius: 8px;
  background: var(--page);
}
.doc-card-head {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-secondary);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .06em;
}
.doc-swatch {
  width: 11px;
  height: 11px;
  border-radius: 50%;
}
.doc-swatch.a {
  background: var(--series-1);
}
.doc-swatch.b {
  background: var(--series-2);
}
.doc-card-id {
  margin-top: 6px;
  color: var(--text-primary);
  font-weight: 600;
}
.doc-card-text {
  margin: 7px 0 9px;
  color: var(--text-secondary);
  font-size: 13px;
  line-height: 1.45;
}
.doc-card-subhead {
  margin: 0 0 7px;
  color: var(--text-muted);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .05em;
}
.doc-term-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.term-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 8px;
  border: 1px solid var(--grid);
  border-radius: 999px;
  background: var(--surface-1);
  color: var(--text-primary);
  font: 12px/1.3 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
.term-pill em {
  font-style: normal;
  color: var(--text-secondary);
}
.term-pill.shared {
  border-color: rgba(86, 68, 255, .22);
}
.shared-empty {
  margin: 0;
  color: var(--text-muted);
  font-size: 12.5px;
  line-height: 1.45;
}
.cosine-formula {
  font-size: 12.2px;
}
.cosine-note {
  padding: 2px 2px 0;
  color: var(--text-muted);
  font-size: 12.5px;
  line-height: 1.5;
}
.cos-vector {
  stroke-width: 5;
  fill: none;
}
.cos-arc {
  fill: none;
  stroke: var(--text-muted);
  stroke-width: 1.6;
}
.doc-a-card {
  border-top: 3px solid var(--series-1);
}
.doc-b-card {
  border-top: 3px solid var(--series-2);
}
@media (max-width: 920px) {
  .tfidf-compare-layout {
    grid-template-columns: 1fr;
  }
  .tfidf-side {
    order: 2;
  }
}
@media (max-width: 800px) {
  .tfidf-row {
    grid-template-columns: 38px 1fr;
  }
  .doc-main,
  .weight-cell,
  .score-cell {
    grid-column: 2;
  }
  .weight-cell {
    display: grid;
    grid-template-columns: 80px 1fr;
    align-items: center;
  }
}

/* Week 6 V6: physics-inspired cosine stage */
.cosine-controls {
  margin-bottom: 12px;
}
.cosine-stage {
  position: relative;
  min-height: 650px;
  border: 1px solid var(--grid);
  border-radius: 12px;
  overflow: hidden;
  background: var(--page);
}
.cosine-stage-svg {
  width: 100%;
  height: 650px;
  display: block;
}
.physics-bg {
  fill: var(--page);
}
.physics-grid {
  stroke: var(--grid);
  stroke-width: 1;
  opacity: .58;
}
.physics-axis {
  stroke: var(--text-secondary);
  stroke-width: 2;
  fill: none;
}
.physics-tick {
  stroke: var(--text-muted);
  stroke-width: 1.25;
}
.origin-dot {
  fill: var(--text-secondary);
}
.physics-projection {
  stroke: var(--text-muted);
  stroke-width: 1.5;
  stroke-dasharray: 6 7;
  opacity: .7;
}
.physics-projection.faint {
  opacity: .35;
}
.cosine-stage .cos-vector {
  stroke-width: 7;
  stroke-linecap: round;
}
.cosine-stage .cos-vector.vector-a {
  stroke: var(--series-1);
}
.cosine-stage .cos-vector.vector-b {
  stroke: var(--series-2);
}
.cosine-stage .cos-arc {
  fill: none;
  stroke: var(--accent);
  stroke-width: 2.5;
}
.theta-label {
  fill: var(--accent);
  font: italic 19px/1 Georgia, serif;
}
.cosine-overlay {
  position: absolute;
  top: 18px;
  right: 18px;
  width: min(405px, calc(100% - 610px));
  min-width: 350px;
  display: grid;
  gap: 8px;
  z-index: 2;
}
.cosine-metrics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}
.cosine-big.compact {
  padding: 10px 12px;
  background: color-mix(in srgb, var(--page) 94%, transparent);
  box-shadow: 0 6px 18px rgba(0, 0, 0, .04);
}
.cosine-big.compact .value {
  font-size: 28px;
  letter-spacing: -.02em;
}
.cosine-overlay .cos-doc-card,
.cosine-overlay .cosine-formula,
.cosine-overlay .shared-panel,
.cosine-overlay .overlay-note {
  background: color-mix(in srgb, var(--page) 95%, transparent);
  backdrop-filter: blur(3px);
  box-shadow: 0 6px 18px rgba(0, 0, 0, .035);
}
.cosine-overlay .cos-doc-card {
  padding: 10px 12px;
}
.cosine-overlay .doc-card-text {
  margin: 5px 0 7px;
  font-size: 12.4px;
}
.cosine-overlay .doc-card-subhead {
  margin-bottom: 5px;
  font-size: 10px;
}
.cosine-overlay .term-pill {
  padding: 3px 7px;
  font-size: 11.5px;
}
.cosine-overlay .cosine-formula {
  padding: 9px 11px;
}
.cosine-overlay .shared-panel {
  padding: 10px 12px;
}
.cosine-overlay .panel-title {
  margin-bottom: 7px;
  font-size: 12.5px;
}
.cosine-overlay .progress-note {
  margin-top: 6px;
  font-size: 10.8px;
}
.cosine-overlay .overlay-note {
  padding: 8px 10px;
  border: 1px solid var(--grid);
  border-radius: 8px;
  color: var(--text-secondary);
  font-size: 11.7px;
  line-height: 1.42;
}

@media (max-width: 980px) {
  .cosine-stage {
    min-height: auto;
    overflow: visible;
  }
  .cosine-stage-svg {
    height: 500px;
  }
  .cosine-overlay {
    position: static;
    width: auto;
    min-width: 0;
    padding: 0 12px 12px;
  }
}

/* Week 6 V7: compact, wide cosine figure */
.cosine-page {
  min-width: 1160px;
}
.cosine-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 10px;
}
.cosine-toolbar .preset-row,
.cosine-toolbar .cosine-controls {
  margin: 0;
}
.cosine-toolbar .cosine-controls {
  flex-wrap: nowrap;
}
.cosine-stage {
  height: 510px;
  min-height: 510px;
  border-radius: 10px;
}
.cosine-stage-svg {
  height: 510px;
}
.cosine-stage .physics-grid {
  stroke-width: .8;
  opacity: .42;
}
.cosine-stage .physics-axis {
  stroke-width: 1.65;
}
.cosine-stage .physics-tick {
  stroke-width: 1;
}
.cosine-stage .physics-projection {
  stroke-width: 1;
  stroke-dasharray: 5 6;
  opacity: .52;
}
.cosine-stage .physics-projection.faint {
  opacity: .24;
}
.cosine-stage .origin-dot {
  r: 3.5px;
}
.cosine-stage .cos-vector {
  stroke-width: 3.1;
  stroke-linecap: round;
}
.cosine-stage .cos-arc {
  stroke-width: 1.8;
}
.cosine-stage .theta-label {
  font-size: 17px;
}
.cosine-overlay {
  top: 12px;
  right: 12px;
  width: 620px;
  min-width: 620px;
  gap: 7px;
}
.cosine-metrics {
  gap: 7px;
}
.cosine-big.compact {
  padding: 8px 11px;
}
.cosine-big.compact .value {
  font-size: 25px;
}
.cosine-sentence-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 7px;
}
.cosine-overlay .cos-doc-card {
  min-width: 0;
  padding: 9px 10px;
}
.cosine-overlay .doc-card-id {
  margin-top: 4px;
  font-size: 13px;
}
.cosine-overlay .doc-card-text {
  margin: 4px 0 6px;
  font-size: 11.7px;
  line-height: 1.38;
}
.cosine-overlay .doc-card-subhead {
  margin-bottom: 4px;
  font-size: 9.4px;
}
.cosine-overlay .doc-term-row {
  gap: 4px;
}
.cosine-overlay .term-pill {
  padding: 2px 6px;
  font-size: 10.6px;
}
.cosine-overlay .cosine-formula {
  padding: 7px 10px;
  font-size: 11.4px;
}
.cosine-overlay .shared-panel {
  padding: 8px 10px;
}
.cosine-overlay .panel-kicker {
  font-size: 9.5px;
}
.cosine-overlay .panel-title {
  margin-bottom: 5px;
  font-size: 11.8px;
}
.cosine-overlay .progress-note {
  margin-top: 5px;
  font-size: 10.2px;
  line-height: 1.35;
}
.cosine-overlay .overlay-note {
  padding: 7px 9px;
  font-size: 10.9px;
  line-height: 1.36;
}
.cosine-page .plot-caption {
  margin-top: 7px;
}

/* Week 6 V8: everything fits the normal course width again. */
.tfidf-compare-layout {
  grid-template-columns: 1fr;
}
.tfidf-side {
  grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
  gap: 12px;
  margin-top: 12px;
}
.cosine-page.cosine-page-v8 {
  min-width: 0;
  max-width: 100%;
}
.cosine-toolbar-v8 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  margin-bottom: 10px;
}
.cosine-toolbar-v8 .preset-row,
.cosine-toolbar-v8 .cosine-controls {
  margin: 0;
}
.cosine-toolbar-v8 .cosine-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 18px;
}
.cosine-stage-v8 {
  position: relative;
  width: 100%;
  height: 390px;
  min-height: 390px;
  overflow: hidden;
  border: 1px solid var(--grid);
  border-radius: 10px;
  background: var(--page);
}
.cosine-stage-svg-v8 {
  display: block;
  width: 100%;
  height: 390px;
}
.cosine-page-v8 .physics-grid {
  stroke: var(--grid);
  stroke-width: .75;
  opacity: .52;
}
.cosine-page-v8 .physics-axis {
  stroke: var(--text-secondary);
  stroke-width: 1.45;
}
.cosine-page-v8 .physics-tick {
  stroke: var(--text-muted);
  stroke-width: .9;
}
.cosine-page-v8 .physics-projection {
  stroke: var(--text-muted);
  stroke-width: .9;
  stroke-dasharray: 5 6;
  opacity: .42;
}
.cosine-page-v8 .cos-vector {
  stroke-width: 2.15;
  stroke-linecap: round;
}
.cosine-page-v8 .cos-arc {
  stroke-width: 1.45;
}
.cosine-page-v8 .theta-label {
  font-size: 16px;
}
.cosine-below {
  display: grid;
  gap: 10px;
  margin-top: 10px;
}
.cosine-metrics-v8 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.cosine-sentence-row-v8 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.cosine-page-v8 .cos-doc-card {
  min-width: 0;
  padding: 10px 12px;
}
.cosine-page-v8 .doc-card-text {
  margin: 5px 0 7px;
  font-size: 12.8px;
}
.cosine-page-v8 .doc-term-row {
  gap: 5px;
}
.cosine-page-v8 .term-pill {
  padding: 3px 7px;
  font-size: 11.4px;
}
.cosine-page-v8 .cosine-formula,
.cosine-page-v8 .shared-panel,
.cosine-page-v8 .overlay-note {
  width: 100%;
  box-sizing: border-box;
}
@media (max-width: 720px) {
  .tfidf-side,
  .cosine-metrics-v8,
  .cosine-sentence-row-v8 {
    grid-template-columns: 1fr;
  }
  .cosine-stage-v8,
  .cosine-stage-svg-v8 {
    height: 330px;
    min-height: 330px;
  }
}

/* Week 6 clean teaching views: keep the explorable visual, move interpretation to the page text. */
.tfidf-clean-page,
.cosine-page-clean {
  max-width: 100%;
}
.tfidf-clean-controls {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}
.control-block {
  display: flex;
  align-items: center;
  gap: 9px;
  flex-wrap: wrap;
}
.control-label {
  color: var(--text-muted);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: .07em;
  text-transform: uppercase;
}
.clean-idf-strip {
  margin-bottom: 13px;
}
.clean-idf-strip .idf-card {
  padding: 7px 8px 8px;
  border: 1px solid var(--grid);
  border-top: 3px solid var(--grid);
  border-radius: 8px;
  background: var(--page);
}
.clean-idf-strip .idf-card.active {
  border-top-color: var(--accent);
}
.tfidf-clean-head {
  display: grid;
  grid-template-columns: 42px minmax(220px,1.65fr) repeat(3,minmax(68px,.5fr)) minmax(125px,.8fr);
  gap: 8px;
  padding: 0 10px 5px;
  color: var(--text-muted);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
}
.clean-docs {
  gap: 7px;
}
.clean-row {
  grid-template-columns: 42px minmax(220px,1.65fr) repeat(3,minmax(68px,.5fr)) minmax(125px,.8fr);
  padding: 10px;
}
.clean-row .weight-cell {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  border-radius: 6px;
  background: var(--surface-1);
}
.clean-row .weight-cell.query-term {
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--accent) 28%, transparent);
}
.clean-row .weight-cell .weight {
  margin: 0;
  font-size: 13px;
}
.clean-row .score-cell .score-label {
  justify-content: flex-end;
  font-size: 12px;
  letter-spacing: 0;
  text-transform: none;
}
.clean-row.best {
  border-color: var(--accent);
  box-shadow: inset 3px 0 0 var(--accent);
}
.tfidf-clean-key {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  margin-top: 10px;
  color: var(--text-muted);
  font-size: 11px;
  line-height: 1.4;
}
.tfidf-clean-key strong {
  color: var(--text-secondary);
  font-weight: 600;
}

.cosine-clean-toolbar {
  display: grid;
  gap: 9px;
  margin-bottom: 10px;
}
.cosine-clean-toolbar .preset-row,
.cosine-clean-toolbar .cosine-clean-controls {
  margin: 0;
}
.cosine-clean-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
}
.cosine-clean-stage {
  height: 360px;
  border: 1px solid var(--grid);
  border-radius: 10px;
  overflow: hidden;
  background: var(--page);
}
.cosine-clean-stage svg {
  width: 100%;
  height: 360px;
  display: block;
}
.cosine-page-clean .physics-grid {
  stroke: var(--grid);
  stroke-width: .8;
  opacity: .52;
}
.cosine-page-clean .physics-axis {
  stroke: var(--text-secondary);
  stroke-width: 1.4;
}
.cosine-page-clean .origin-dot {
  fill: var(--text-secondary);
}
.cosine-page-clean .cos-vector {
  stroke-width: 3;
  stroke-linecap: round;
}
.cosine-page-clean .cos-vector.vector-a { stroke: var(--series-1); }
.cosine-page-clean .cos-vector.vector-b { stroke: var(--series-2); }
.cosine-page-clean .cos-arc {
  fill: none;
  stroke: var(--accent);
  stroke-width: 1.6;
}
.cosine-page-clean .theta-label {
  fill: var(--accent);
  font: italic 17px/1 Georgia, serif;
}
.vector-tag {
  font: 600 13px/1 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
.vector-tag.tag-a { fill: var(--series-1); }
.vector-tag.tag-b { fill: var(--series-2); }
.cosine-clean-bottom {
  display: grid;
  grid-template-columns: 190px 1fr;
  gap: 10px;
  margin-top: 10px;
}
.cosine-clean-metrics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}
.cosine-clean-metrics .cosine-big.compact {
  padding: 9px 10px;
}
.cosine-clean-metrics .cosine-big.compact .value {
  font-size: 21px;
}
.cosine-clean-sentences {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}
.simple-sentence {
  display: grid;
  grid-template-columns: 22px 1fr;
  gap: 7px;
  align-items: start;
  padding: 9px 10px;
  border: 1px solid var(--grid);
  border-radius: 8px;
  background: var(--page);
}
.simple-sentence > span {
  display: grid;
  place-items: center;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  color: white;
  font-size: 11px;
  font-weight: 700;
}
.simple-sentence.a > span { background: var(--series-1); }
.simple-sentence.b > span { background: var(--series-2); }
.simple-sentence p {
  margin: 1px 0 0;
  color: var(--text-secondary);
  font-size: 12px;
  line-height: 1.4;
}
@media (max-width: 720px) {
  .tfidf-clean-head { display: none; }
  .clean-row { grid-template-columns: 36px 1fr; }
  .clean-row .weight-cell,
  .clean-row .score-cell { grid-column: 2; }
  .cosine-clean-stage,
  .cosine-clean-stage svg { height: 315px; }
  .cosine-clean-bottom { grid-template-columns: 1fr; }
  .cosine-clean-sentences { grid-template-columns: 1fr; }
}