/* Static article-local figures. qi palette/chrome, native HTML text, CSS reflow.
   No JavaScript, figure scrollbar, image filter, or duplicate mobile content. */
.snr-figure {
  --snr-fg: #303547;
  --snr-muted: #4e5366;
  --snr-surface: #fff;
  --snr-soft: #f0f3fa;
  --snr-border: #abb1c7;
  --snr-line: #656b7f;
  --snr-query: #5133cc;
  --snr-query-soft: #f0edff;
  --snr-doc: #006b75;
  --snr-doc-soft: #e7f6f8;
  --snr-model: #bb1841;
  --snr-model-soft: #fff0f3;
  --snr-op: #763183;
  --snr-op-soft: #f7edf9;
  color: var(--snr-fg);
  margin: 32px 0;
  padding: 20px;
  border: 1px solid var(--snr-border);
  border-radius: 8px;
  background: var(--snr-surface);
  font-size: 14px;
  line-height: 1.5;
  text-align: left;
  container-type: inline-size;
}
html[data-theme="dark"] .snr-figure {
  --snr-fg: #e2e7f5;
  --snr-muted: #b9c0d4;
  --snr-surface: #111824;
  --snr-soft: #1c2433;
  --snr-border: #656b7f;
  --snr-line: #b9c0d4;
  --snr-query: #b8adff;
  --snr-query-soft: #272143;
  --snr-doc: #86dbe2;
  --snr-doc-soft: #112f35;
  --snr-model: #ff9aac;
  --snr-model-soft: #3a1c2a;
  --snr-op: #ddb1e6;
  --snr-op-soft: #32213c;
}
@media (prefers-color-scheme: dark) {
  html:not([data-theme="light"]):not([data-theme="dark"]) .snr-figure {
    --snr-fg: #e2e7f5;
    --snr-muted: #b9c0d4;
    --snr-surface: #111824;
    --snr-soft: #1c2433;
    --snr-border: #656b7f;
    --snr-line: #b9c0d4;
    --snr-query: #b8adff;
    --snr-query-soft: #272143;
    --snr-doc: #86dbe2;
    --snr-doc-soft: #112f35;
    --snr-model: #ff9aac;
    --snr-model-soft: #3a1c2a;
    --snr-op: #ddb1e6;
    --snr-op-soft: #32213c;
  }
}
.snr-figure *,
.snr-figure *::before,
.snr-figure *::after {
  box-sizing: border-box;
}
.snr-figure .snr-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 4px 16px;
  margin-bottom: 20px;
}
.snr-figure .snr-title {
  font-size: 18px;
  font-weight: 650;
  line-height: 1.3;
}
.snr-figure .snr-kind {
  color: var(--snr-muted);
  font-size: 14px;
}
.snr-figure p {
  font-size: 14px;
  line-height: 1.5;
  margin: 8px 0 0;
  color: inherit;
}
.snr-figure .snr-lanes {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 20px;
}
.snr-figure .snr-lane {
  min-width: 0;
}
.snr-figure .snr-box {
  border: 1px solid var(--snr-border);
  border-radius: 6px;
  padding: 12px;
  background: var(--snr-soft);
  min-width: 0;
}
.snr-figure .snr-query {
  background: var(--snr-query-soft);
  border-color: var(--snr-query);
}
.snr-figure .snr-doc {
  background: var(--snr-doc-soft);
  border-color: var(--snr-doc);
}
.snr-figure .snr-model {
  background: var(--snr-model-soft);
  border-color: var(--snr-model);
}
.snr-figure .snr-op {
  background: var(--snr-op-soft);
  border-color: var(--snr-op);
}
.snr-figure .snr-label {
  display: block;
  font-size: 14px;
  font-weight: 650;
  margin-bottom: 8px;
}
.snr-figure .snr-query > .snr-label {
  color: var(--snr-query);
}
.snr-figure .snr-doc > .snr-label {
  color: var(--snr-doc);
}
.snr-figure .snr-model > .snr-label {
  color: var(--snr-model);
}
.snr-figure .snr-op > .snr-label {
  color: var(--snr-op);
}
.snr-figure .snr-tokens {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.snr-figure .snr-token {
  display: inline-flex;
  flex-direction: column;
  min-width: 32px;
  border: 1px solid var(--snr-border);
  border-radius: 4px;
  background: var(--snr-surface);
  padding: 4px 7px;
  font-size: 14px;
  align-items: center;
  line-height: 1.45;
}
.snr-figure .snr-token.snr-hit {
  border-color: var(--snr-op);
  box-shadow: inset 0 -2px var(--snr-op);
}
.snr-figure .snr-token.snr-added {
  border-color: var(--snr-model);
  color: var(--snr-model);
  border-style: dashed;
}
.snr-figure .snr-weight {
  font-family: "Geist Mono", ui-monospace, monospace;
  font-size: 14px;
  font-weight: 550;
}
.snr-figure .snr-zero {
  color: var(--snr-muted);
}
.snr-figure .snr-arrow {
  position: relative;
  height: 26px;
  width: 100%;
}
.snr-figure .snr-arrow::before {
  content: "";
  position: absolute;
  left: calc(50% - 1px);
  top: 3px;
  height: 17px;
  width: 2px;
  background: var(--snr-line);
}
.snr-figure .snr-arrow::after {
  content: "";
  position: absolute;
  left: calc(50% - 4px);
  top: 14px;
  width: 8px;
  height: 8px;
  border-right: 2px solid var(--snr-line);
  border-bottom: 2px solid var(--snr-line);
  transform: rotate(45deg);
}
.snr-figure .snr-join {
  position: relative;
  height: 36px;
}
.snr-figure .snr-join::before {
  content: "";
  position: absolute;
  left: 25%;
  width: 50%;
  height: 12px;
  border: 2px solid var(--snr-line);
  border-top: 0;
  top: 0;
  border-radius: 0 0 4px 4px;
}
.snr-figure .snr-join .snr-arrow {
  position: absolute;
  top: 10px;
}
.snr-figure .snr-step {
  display: grid;
  grid-template-columns: 24px minmax(0, 1fr);
  gap: 8px;
  align-items: start;
  padding: 8px 0;
}
.snr-figure .snr-step + .snr-step {
  border-top: 1px solid var(--snr-border);
}
.snr-figure .snr-num {
  display: grid;
  place-content: center;
  border-radius: 50%;
  border: 1px solid var(--snr-model);
  width: 24px;
  height: 24px;
  font-size: 14px;
  color: var(--snr-model);
}
.snr-figure .snr-step strong {
  display: block;
  font-weight: 650;
}
.snr-figure .snr-step .snr-tokens {
  margin-top: 8px;
}
.snr-figure .snr-note {
  color: var(--snr-muted);
  font-size: 14px;
}
.snr-figure .snr-vector {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  border: 1px solid var(--snr-border);
  border-radius: 4px;
  overflow: hidden;
  margin-top: 8px;
}
.snr-figure .snr-vector span {
  font:
    14px/1.5 "Geist Mono",
    ui-monospace,
    monospace;
  padding: 6px 2px;
  text-align: center;
  background: var(--snr-surface);
  border-right: 1px solid var(--snr-border);
}
.snr-figure .snr-vector span:nth-child(5n) {
  border-right: none;
}
.snr-figure .snr-vector span:nth-child(n + 6) {
  border-top: 1px solid var(--snr-border);
}
.snr-figure .snr-math {
  font:
    14px/1.6 "Geist Mono",
    ui-monospace,
    monospace;
  overflow-wrap: anywhere;
}
.snr-figure .snr-equation {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 8px;
  margin-top: 8px;
  font:
    14px/1.6 "Geist Mono",
    ui-monospace,
    monospace;
  align-items: baseline;
}
.snr-figure .snr-equation > span {
  white-space: nowrap;
}
.snr-figure .snr-result {
  color: var(--snr-op);
  font-weight: 700;
}
.snr-figure .snr-match {
  width: 100%;
  border-collapse: collapse;
  margin: 8px 0 12px;
  table-layout: fixed;
  font-size: 14px;
}
.snr-figure .snr-match th,
.snr-figure .snr-match td {
  padding: 7px 5px;
  border: 0;
  border-bottom: 1px solid var(--snr-border);
  text-align: left;
  color: var(--snr-fg);
  font-size: 14px;
  line-height: 1.5;
  overflow-wrap: anywhere;
}
.snr-figure .snr-match th {
  font-weight: 650;
}
.snr-figure .snr-match td:not(:first-child) {
  font-family: "Geist Mono", ui-monospace, monospace;
}
.snr-figure .snr-matches {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  padding: 8px 0;
}
.snr-figure .snr-matches + .snr-matches {
  border-top: 1px solid var(--snr-border);
}
.snr-figure .snr-index-term {
  flex: 0 0 86px;
  color: var(--snr-query);
  font-weight: 650;
}
.snr-figure .snr-inline-arrow {
  color: var(--snr-line);
  font-size: 20px;
  line-height: 1;
  margin-right: 4px;
}
.snr-figure .snr-id {
  display: inline-block;
  border: 1px solid var(--snr-doc);
  background: var(--snr-doc-soft);
  color: var(--snr-doc);
  border-radius: 4px;
  font:
    14px/1.5 "Geist Mono",
    ui-monospace,
    monospace;
  min-width: 30px;
  text-align: center;
  padding: 3px 6px;
}
.snr-figure .snr-bm25 {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 2fr);
  gap: 12px;
  margin-top: 10px;
}
.snr-figure .snr-frac {
  display: inline-grid;
  vertical-align: middle;
  text-align: center;
  font-family: Georgia, serif;
  font-size: 16px;
  line-height: 1.5;
}
.snr-figure .snr-frac > span:first-child {
  border-bottom: 1px solid currentColor;
  padding-bottom: 2px;
}
.snr-figure .snr-frac > span:last-child {
  padding-top: 2px;
}
.snr-figure .snr-queries {
  margin: 8px 0 0;
  padding-left: 20px;
  font-size: 14px;
}
.snr-figure .snr-queries li {
  margin: 5px 0;
  padding: 0;
  font-size: 14px;
  line-height: 1.5;
}
.snr-figure .snr-passage {
  margin-top: 0;
}
.snr-figure .snr-caption {
  margin-top: 16px;
  color: var(--snr-muted);
  font-size: 14px;
  line-height: 1.5;
}
.snr-figure .snr-caption a {
  color: inherit;
  text-decoration: underline;
  text-underline-offset: 2px;
}
@container (max-width:570px) {
  .snr-figure .snr-lanes,
  .snr-figure .snr-bm25 {
    grid-template-columns: minmax(0, 1fr);
  }
  .snr-figure .snr-lanes {
    gap: 16px;
  }
  .snr-figure .snr-join::before {
    display: none;
  }
  .snr-figure .snr-join {
    height: 26px;
  }
  .snr-figure .snr-join .snr-arrow {
    top: 0;
  }
}
@media (max-width: 480px) {
  .snr-figure {
    padding: 12px;
    margin: 24px 0;
  }
  .snr-figure .snr-box {
    padding: 10px;
  }
  .snr-figure .snr-heading {
    margin-bottom: 14px;
  }
}
/* Corresponding stages share rows, preserving the desktop comparison. */
.snr-figure .snr-aligned {
  grid-auto-flow: column;
  grid-template-rows: auto;
  row-gap: 0;
}
.snr-figure .snr-aligned > .snr-lane {
  display: grid;
  grid-template-rows: subgrid;
  grid-row: 1 / span 5;
}
.snr-figure[id="snr-splade++"] .snr-aligned > .snr-lane {
  grid-row: 1 / span 9;
}
.snr-figure[id="snr-sparta"] .snr-aligned > .snr-lane {
  grid-row: 1 / span 3;
}
.snr-figure .snr-head {
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px solid var(--snr-border);
}
.snr-figure .snr-head strong {
  font-weight: 650;
}
.snr-figure .snr-products {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.snr-figure .snr-product {
  display: grid;
  gap: 2px;
  padding: 6px 10px;
  border: 1px solid var(--snr-border);
  border-radius: 4px;
  background: var(--snr-surface);
  min-width: 76px;
}
.snr-figure .snr-product strong {
  font-size: 14px;
}
.snr-figure .snr-total {
  font-family: "Geist Mono", ui-monospace, monospace;
  font-size: 14px;
  margin-top: 10px;
}
.snr-figure .snr-total strong {
  color: var(--snr-op);
}
.snr-figure .snr-coil-score {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}
.snr-figure .snr-coil-score .snr-box {
  background: var(--snr-surface);
}
@container (max-width:570px) {
  .snr-figure .snr-aligned {
    grid-auto-flow: row;
    grid-template-rows: none;
    row-gap: 16px;
  }
  .snr-figure .snr-aligned > .snr-lane,
  .snr-figure[id="snr-splade++"] .snr-aligned > .snr-lane,
  .snr-figure[id="snr-sparta"] .snr-aligned > .snr-lane {
    display: block;
    grid-row: auto;
  }
  .snr-figure .snr-coil-score {
    grid-template-columns: minmax(0, 1fr);
  }
}
/* Compact desktop rhythm; all essential labels remain 14 CSS px. */
.snr-figure .snr-heading {
  margin-bottom: 12px;
}
.snr-figure .snr-box {
  padding: 10px;
}
.snr-figure .snr-label {
  margin-bottom: 6px;
}
.snr-figure p {
  margin-top: 6px;
  line-height: 1.4;
}
.snr-figure .snr-arrow {
  height: 22px;
}
.snr-figure .snr-product {
  padding: 4px 8px;
}
.snr-figure .snr-total {
  margin-top: 6px;
}
.snr-figure .snr-caption {
  text-align: left;
  margin-top: 12px;
}
.snr-figure[id="snr-splade++"] .snr-aligned {
  grid-template-rows: auto 22px auto 22px auto 22px auto 22px auto;
}
.snr-figure .snr-aligned {
  grid-template-rows: auto 22px auto 22px auto;
}
.snr-figure[id="snr-sparta"] .snr-aligned {
  grid-template-rows: auto 22px auto;
}
@container (max-width:570px) {
  .snr-figure .snr-aligned,
  .snr-figure[id="snr-splade++"] .snr-aligned,
  .snr-figure[id="snr-sparta"] .snr-aligned {
    grid-template-rows: none;
  }
}

/* Mathematical indices keep the 12px minimum at every viewport. */
.snr-figure sub,
.snr-figure sup {
  font-size: 12px;
}
/* The independently encoded SPARTA query meets the expanded document only
   at scoring. Keep their output ends aligned for the joining connector. */
.snr-figure[id="snr-sparta"] .snr-lanes:not(.snr-aligned) {
  align-items: end;
}

/* Literal/binary queries bypass the document encoder and feed scoring.
   Desktop lane centers account for the 20px inter-column gutter. */
.snr-figure .snr-lane {
  display: flex;
  flex-direction: column;
}
.snr-figure .snr-bypass {
  flex: 1;
  position: relative;
}
.snr-figure .snr-bypass::before {
  content: "";
  position: absolute;
  left: calc(50% - 1px);
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--snr-line);
}
.snr-figure .snr-join::before {
  left: calc(25% - 5px);
  width: calc(50% + 10px);
}
@container (max-width: 570px) {
  .snr-figure .snr-bypass {
    display: none;
  }
}

/* External expansion receives only the document, not the example query. */
.snr-figure .snr-doc-feed::before {
  left: calc(75% + 4px);
}
.snr-figure .snr-doc-feed::after {
  left: calc(75% + 1px);
}
@container (max-width: 570px) {
  .snr-figure .snr-doc-feed::before {
    left: calc(50% - 1px);
  }
  .snr-figure .snr-doc-feed::after {
    left: calc(50% - 4px);
  }
}

/* DOM order puts the expanded document immediately after expansion on phones.
   Desktop keeps the independent query left and document right. */
.snr-figure .snr-sparta-matching > .snr-lane:first-child {
  grid-column: 2;
  grid-row: 1;
}
.snr-figure .snr-sparta-matching > .snr-lane:last-child {
  grid-column: 1;
  grid-row: 1;
}
@container (max-width: 570px) {
  .snr-figure .snr-sparta-matching > .snr-lane:first-child,
  .snr-figure .snr-sparta-matching > .snr-lane:last-child {
    grid-column: auto;
    grid-row: auto;
  }
}
/* Separate the independent query input from the document expansion stage. */
.snr-figure .snr-sparta-matching {
  padding-top: 14px;
}