/* ===========================================
   MODEL BENCHMARKS (/insights/tools/model-benchmarks/)
   Loaded only when front matter sets needsBench.
   One token set for the page: two radii, two paddings, five type steps,
   one eyebrow style. Green marks Opus 5.5 identity and the brand only.
   Series colours are validated (dataviz validate_palette.js, all-pairs,
   light #FFFFFF and dark #1A1B1E): s1 Opus 5.5, s2 GPT-6 Astra,
   s3 Fable 5.1; s0 neutral ink for models without a slot.
   Motion: nothing here uses `transition: all` (bug pattern #1).
   =========================================== */

.bench {
  --bench-s1: #2E9E1F;
  --bench-s2: #0068C9;
  --bench-s3: #00A3A3;
  --bench-s0: #8A9A90;
  --bench-card: var(--surface);
  --bench-line: var(--border);
  --bench-grid: rgba(255, 255, 255, 0.07);
  --bench-track: rgba(255, 255, 255, 0.07);
  --bench-fill: rgba(237, 237, 237, 0.42);
  --bench-tint: rgba(255, 255, 255, 0.035);
  --bench-grad: linear-gradient(90deg, #3EAE2C, #006CC1);
  --bench-shadow: 0 18px 40px -24px rgba(0, 0, 0, 0.6);
  --r-card: 16px;
  --r-ctl: 8px;
  --pad-card: 20px;
  --pad-panel: 24px;
  --t-xs: 0.75rem;
  --t-sm: 0.875rem;
  --t-md: 1rem;
  --t-lg: 1.125rem;
  --t-xl: 1.375rem;
  --measure: 760px;
}

[data-theme="light"] .bench {
  --bench-s0: #6B7280;
  --bench-grid: rgba(17, 24, 39, 0.08);
  --bench-track: rgba(17, 24, 39, 0.07);
  --bench-fill: rgba(17, 24, 39, 0.32);
  --bench-tint: rgba(17, 24, 39, 0.03);
  --bench-shadow: 0 18px 40px -26px rgba(17, 24, 39, 0.28);
}

.bench-s1 { --c: var(--bench-s1); }
.bench-s2 { --c: var(--bench-s2); }
.bench-s3 { --c: var(--bench-s3); }
.bench-s0 { --c: var(--bench-s0); }

/* The post footer (tags, CTA, read next) shares the page's left edge */
.blog-post-container:has(#bench) .post-footer { max-width: 1032px; }
.blog-post-container:has(#bench) .article-banner { padding-top: 64px; }

/* ---------- rhythm and type ---------- */
.bench-section {
  padding: 0;
  margin-top: 5rem;
  scroll-margin-top: 96px;
}
.bench-first { margin-top: 2.5rem; }

.article-prose .bench-section > p,
.article-prose .bench-lens-note {
  max-width: var(--measure);
  font-size: var(--t-md);
  line-height: 1.65;
  margin: 0 0 1.5rem;
}

.article-prose .bench-h2 {
  font-size: var(--fs-subsection);
  line-height: 1.15;
  letter-spacing: var(--ls-display);
  margin: 0 0 1rem;
}

.article-prose .bench-h3 {
  font-size: var(--t-lg);
  line-height: 1.3;
  margin: 2rem 0 0.75rem;
  color: var(--text-primary);
}

.article-prose .bench-eyebrow,
.bench-eyebrow {
  font-family: ui-monospace, "Cascadia Code", Menlo, Consolas, monospace;
  font-size: var(--t-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  line-height: 1.35;
  margin: 0;
}

/* ---------- verdict ---------- */
.bench-verdict {
  list-style: none;
  margin: 0.5rem 0 0 !important;
  padding: var(--pad-panel) !important;
  border: 1px solid var(--bench-line);
  border-radius: var(--r-card);
  background: var(--bench-card);
  display: grid;
  gap: 14px;
}
.bench-verdict li {
  position: relative;
  margin: 0 !important;
  padding-left: 22px;
  font-size: var(--t-lg) !important;
  line-height: 1.55 !important;
  color: var(--text-secondary) !important;
}
.bench-verdict li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--bench-grad);
}
.bench-verdict strong { color: var(--text-primary); }

/* ---------- job cards (subgrid keeps every slot on one line) ---------- */
.bench-cards {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  grid-auto-rows: auto;
  column-gap: 12px;
  row-gap: 12px;
  margin-top: 1.5rem;
}
.bench-card {
  position: relative;
  display: grid;
  grid-row: span 6;
  grid-template-rows: subgrid;
  row-gap: 12px;
  padding: var(--pad-card);
  border: 1px solid var(--bench-line);
  border-radius: var(--r-card);
  background: var(--bench-card);
  overflow: hidden;
}
.bench-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: var(--c, var(--bench-s0));
}
.article-prose .bench-card p { margin: 0; }
.article-prose .bench-card-pick {
  font-size: var(--t-xl);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}
.bench-dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  margin-right: 8px;
  border-radius: 50%;
  background: var(--c, var(--bench-s0));
  vertical-align: 2px;
}
.bench-card-effort {
  display: block;
  margin-top: 4px;
  font-size: var(--t-sm);
  font-weight: 600;
  letter-spacing: 0;
  color: var(--text-secondary);
}
.article-prose .bench-card-score {
  font-size: var(--t-sm);
  line-height: 1.45;
  color: var(--text-secondary);
}
.bench-card-score strong {
  font-size: var(--t-lg);
  color: var(--text-primary);
  font-variant-numeric: tabular-nums;
}
.bench-card-score span { display: block; color: var(--text-muted); }
.bench-card-vs {
  margin: 0;
  padding-top: 12px;
  border-top: 1px solid var(--bench-grid);
  display: grid;
  gap: 10px;
  align-content: start;
}
.bench-card-vs dt {
  font-size: var(--t-xs);
  color: var(--text-muted);
}
.bench-card-vs dd {
  margin: 2px 0 0;
  font-size: var(--t-sm);
  font-weight: 600;
  line-height: 1.4;
  color: var(--text-primary);
  font-variant-numeric: tabular-nums;
}
.article-prose .bench-card-switch {
  font-size: var(--t-sm);
  line-height: 1.5;
  color: var(--text-secondary);
}
.article-prose .bench-card-evidence {
  align-self: end;
  font-size: var(--t-xs);
  color: var(--text-muted);
  padding-top: 10px;
  border-top: 1px solid var(--bench-grid);
}

/* ---------- controls ---------- */
.bench-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: end;
  gap: 12px 16px;
  margin: 0 0 1rem;
}
.bench-seg {
  display: inline-flex;
  padding: 4px;
  border: 1px solid var(--bench-line);
  border-radius: 999px;
  background: var(--bench-card);
}
.bench-seg[hidden] { display: none; }
.bench-seg-btn {
  font: inherit;
  font-size: var(--t-sm);
  font-weight: 600;
  min-height: 40px;
  padding: 0 16px;
  border-radius: 999px;
  cursor: pointer;
  color: var(--text-secondary);
  background: transparent;
  border: 0;
  transition: color 0.2s ease, background-color 0.2s ease;
}
.bench-seg-btn:hover { color: var(--text-primary); }
.bench-seg-btn[aria-pressed="true"] { color: var(--bg); background: var(--text-primary); }
.bench-select { display: grid; gap: 4px; font-size: var(--t-xs); color: var(--text-muted); }
.bench-select select {
  font: inherit;
  font-size: var(--t-md);
  font-weight: 600;
  min-height: 44px;
  min-width: 180px;
  padding: 0 36px 0 14px;
  border: 1px solid var(--bench-line);
  border-radius: var(--r-ctl);
  background: var(--bench-card);
  color: var(--text-primary);
  cursor: pointer;
}
.bench-seg-btn:focus-visible,
.bench-select select:focus-visible,
.bench-cell:focus-visible,
.bench-reference > summary:focus-visible,
.bench-calc-input input:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 2px;
}

/* ---------- head to head ---------- */
.bench-compare {
  padding: var(--pad-panel);
  border: 1px solid var(--bench-line);
  border-radius: var(--r-card);
  background: var(--bench-card);
}
.article-prose .bench-compare-summary {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 20px;
  margin: 0 0 6px;
  font-size: var(--t-lg);
  font-weight: 700;
  color: var(--text-primary);
}
.bench-compare-summary span { display: inline-flex; align-items: center; gap: 8px; }
.bench-compare-summary span:nth-child(n + 3) { font-weight: 500; color: var(--text-secondary); }
.bench-compare-a::before,
.bench-compare-b::before {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--ca, var(--bench-s0));
}
.bench-compare-b::before { background: var(--cb, var(--bench-s0)); }
.article-prose .bench-compare-cost {
  margin: 0 0 18px;
  font-size: var(--t-sm);
  color: var(--text-secondary);
}
.bench-compare-axis,
.bench-compare-row {
  display: grid;
  grid-template-columns: 210px minmax(0, 1fr) 190px;
  align-items: center;
  gap: 16px;
}
.bench-compare-axis {
  font-size: var(--t-xs);
  color: var(--text-muted);
  padding-bottom: 6px;
}
.bench-axis-labels { display: flex; justify-content: space-between; }
.bench-compare-group { padding-top: 12px; }
.bench-compare-group .bench-eyebrow { padding: 6px 0; }
.bench-compare-row {
  min-height: 44px;
  border-bottom: 1px solid var(--bench-grid);
}
.bench-compare-name { font-size: var(--t-sm); font-weight: 600; color: var(--text-primary); }
.bench-compare-bar {
  position: relative;
  height: 12px;
  border-radius: 6px;
  background: var(--bench-track);
}
.bench-compare-bar::before {
  content: "";
  position: absolute;
  left: 50%;
  top: -6px;
  bottom: -6px;
  width: 1px;
  background: var(--text-muted);
  opacity: 0.6;
}
.bench-compare-bar i {
  position: absolute;
  top: 0;
  bottom: 0;
  width: var(--w);
  min-width: 2px;
}
.dir-a .bench-compare-bar i { left: 50%; border-radius: 0 6px 6px 0; background: var(--ca, var(--bench-s0)); }
.dir-b .bench-compare-bar i { right: 50%; border-radius: 6px 0 0 6px; background: var(--cb, var(--bench-s0)); }
.is-tie .bench-compare-bar i { background: var(--bench-s0); opacity: 0.55; }
.bench-compare-diff {
  font-size: var(--t-sm);
  font-weight: 700;
  color: var(--text-primary);
  font-variant-numeric: tabular-nums;
}
.is-tie .bench-compare-diff { color: var(--text-secondary); font-weight: 600; }
.bench-compare-diff small {
  display: block;
  font-size: var(--t-xs);
  font-weight: 400;
  color: var(--text-muted);
}
.bench-compare-none {
  grid-column: 2 / -1;
  font-size: var(--t-xs);
  color: var(--text-muted);
}

/* ---------- cost: calculator, strips, chart ---------- */
.bench-calc {
  padding: var(--pad-panel);
  border: 1px solid var(--bench-line);
  border-radius: var(--r-card);
  background: var(--bench-card);
}
.article-prose .bench-calc-title { margin-top: 0; }
.article-prose .bench-calc-lead {
  max-width: var(--measure);
  font-size: var(--t-sm);
  line-height: 1.6;
  color: var(--text-secondary);
  margin: 0 0 1.25rem;
}
.bench-calc-input {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 16px;
  margin-bottom: 1.5rem;
}
.bench-calc-input[hidden] { display: none; }
.bench-calc-input label { font-weight: 600; color: var(--text-primary); font-size: var(--t-sm); }
.bench-calc-value {
  min-width: 5.5ch;
  text-align: right;
  font-size: var(--t-xl);
  font-weight: 800;
  color: var(--text-primary);
  font-variant-numeric: tabular-nums;
}
.bench-calc-input input[type="range"] {
  width: 100%;
  height: 44px;
  accent-color: var(--text-primary);
  background: transparent;
  cursor: pointer;
}
.bench-calc-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.bench-calc-card .bench-take-label {
  font-family: ui-monospace, "Cascadia Code", Menlo, Consolas, monospace;
  font-size: var(--t-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin: 0 0 8px;
}
.article-prose .bench-calc-result {
  margin: 0 0 12px;
  min-height: 3em;
  font-size: var(--t-sm);
  line-height: 1.5;
  color: var(--text-secondary);
}
.article-prose .bench-calc-result:empty { display: none; }
.bench-calc-result strong { color: var(--text-primary); }
.bench-strip {
  position: relative;
  height: 34px;
  border-radius: var(--r-ctl);
  background: var(--bench-track);
}
.bench-strip-seg {
  position: absolute;
  top: 0;
  bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--c, var(--bench-s0));
  background: color-mix(in srgb, var(--c, var(--bench-s0)) calc(var(--shade, 1) * 100%), var(--bench-card));
  box-shadow: inset -2px 0 0 var(--bench-card);
  font-size: var(--t-xs);
  font-weight: 700;
  color: #fff;
  overflow: hidden;
  white-space: nowrap;
}
.bench-strip-seg.is-pale { color: var(--text-primary); }
.bench-strip-seg:first-child { border-radius: var(--r-ctl) 0 0 var(--r-ctl); }
.bench-strip-seg:nth-last-child(2) { border-radius: 0 var(--r-ctl) var(--r-ctl) 0; box-shadow: none; }
.bench-strip-marker {
  position: absolute;
  top: -6px;
  bottom: -6px;
  left: 0;
  width: 3px;
  margin-left: -1.5px;
  border-radius: 2px;
  background: var(--text-primary);
  box-shadow: 0 0 0 2px var(--bench-card);
  display: none;
  transition: left 0.15s ease-out;
}
.js-bench .bench-strip-marker { display: block; }
.bench-strip-ticks { position: relative; height: 20px; margin-top: 6px; }
.bench-strip-ticks span {
  position: absolute;
  transform: translateX(-50%);
  font-size: var(--t-xs);
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}
.bench-strip-ticks span:first-child { transform: none; }
.bench-strip-ticks span:last-child { transform: translateX(-100%); }
.bench-calc-list {
  list-style: none;
  padding: 0 !important;
  margin: 12px 0 0 !important;
  font-size: var(--t-xs) !important;
  line-height: 1.7 !important;
  color: var(--text-secondary) !important;
}
.bench-calc-list li { margin: 0; display: flex; align-items: center; gap: 8px; }

.bench-figure {
  margin: 24px 0 0;
  padding: var(--pad-panel);
  border: 1px solid var(--bench-line);
  border-radius: var(--r-card);
  background: var(--bench-card);
}
.bench-figure figcaption { margin-top: 12px; }
.article-prose .bench-take-text {
  font-size: var(--t-md);
  line-height: 1.6;
  color: var(--text-primary);
  margin: 0 0 8px;
}
.article-prose .bench-fig-note {
  font-size: var(--t-xs);
  line-height: 1.55;
  color: var(--text-muted);
  margin: 0 0 4px;
}
.bench-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
  list-style: none;
  padding: 0 !important;
  margin: 0 0 10px !important;
  font-size: var(--t-xs) !important;
  line-height: 1.4 !important;
  color: var(--text-secondary) !important;
}
.bench-legend li { display: flex; align-items: center; gap: 8px; margin: 0; }
.bench-swatch {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--c, var(--bench-s0));
}
.bench-swatch--frontier { width: 18px; height: 3px; border-radius: 2px; background: var(--bench-grad); }
.bench-svg { display: block; width: 100%; height: auto; overflow: visible; font-family: inherit; }
.bench-grid line { stroke: var(--bench-grid); stroke-width: 1; }
.bench-grid text { fill: var(--text-muted); font-size: 12px; font-variant-numeric: tabular-nums; }
.bench-axis-title { font-size: 11px !important; letter-spacing: 0.06em; }
.bench-annot line { stroke: var(--text-muted); stroke-width: 1; opacity: 0.6; }
.bench-annot text { fill: var(--text-secondary); font-size: 12px; font-weight: 600; }
.bench-frontier-glow { fill: none; stroke-width: 16; stroke-linecap: round; stroke-linejoin: round; opacity: 0.13; }
.bench-frontier {
  fill: none;
  stroke-width: 2.5;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 1;
  stroke-dashoffset: 0;
  transition: stroke-dashoffset 1.4s cubic-bezier(0.65, 0, 0.35, 1) 0.3s;
}
.bench-line {
  fill: none;
  stroke: var(--c);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 1;
  stroke-dashoffset: 0;
  transition: stroke-dashoffset 1.1s cubic-bezier(0.65, 0, 0.35, 1);
}
.bench-pt { outline: none; cursor: default; }
.bench-pt-hit { fill: transparent; }
.bench-pt-dot {
  fill: var(--c);
  stroke: var(--bench-card);
  stroke-width: 2;
  transform-box: fill-box;
  transform-origin: center;
  transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.35s ease;
}
.bench-pt:hover .bench-pt-dot,
.bench-pt:focus-visible .bench-pt-dot { transform: scale(1.5); }
.bench-pt:focus-visible .bench-pt-hit { stroke: var(--green); stroke-width: 2; }
.bench-pt-label { fill: var(--text-muted); font-size: 11px; }
.bench-end-label { fill: var(--text-primary); font-size: 12.5px; font-weight: 600; }
.bench-series { transition: opacity 0.3s ease; }
.bench-cost.has-hover .bench-series:not(.is-hot) { opacity: 0.3; }
.bench-sweet-mark circle { fill: none; stroke: var(--text-primary); stroke-width: 1.5; opacity: 0.55; }
.bench-sweet-mark text { fill: var(--text-primary); font-size: 11px; font-weight: 700; letter-spacing: 0.04em; }

/* ---------- reference (collapsed) ---------- */
.bench-reference {
  border: 1px solid var(--bench-line);
  border-radius: var(--r-card);
  background: var(--bench-card);
}
.bench-reference > summary {
  list-style: none;
  cursor: pointer;
  position: relative;
  padding: 18px 56px 18px var(--pad-panel);
  font-size: var(--t-md);
  font-weight: 600;
  color: var(--text-primary);
  border-radius: var(--r-card);
}
.bench-reference > summary::-webkit-details-marker { display: none; }
.bench-reference > summary::after {
  content: "+";
  position: absolute;
  right: var(--pad-panel);
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.4rem;
  font-weight: 400;
  color: var(--text-muted);
  transition: transform 0.3s ease;
}
.bench-reference[open] > summary::after { transform: translateY(-50%) rotate(45deg); }
.bench-reference[open] > summary { border-bottom: 1px solid var(--bench-line); border-radius: var(--r-card) var(--r-card) 0 0; }
.bench-reference > div { padding: 0 var(--pad-panel); }
.bench-reference > #bench-field { padding-top: var(--pad-panel); }
.bench-reference > .bench-ref-grid > div:first-child .bench-h3:first-child,
.bench-reference > .bench-ref-grid .bench-h3:first-child { margin-top: 1.5rem; }
.bench-ref-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 40px;
  padding-bottom: var(--pad-panel) !important;
}
.bench-defs { margin: 0; display: grid; gap: 10px; }
.bench-defs dt { font-size: var(--t-sm); font-weight: 600; }
.bench-defs dd { margin: 2px 0 0; font-size: var(--t-sm); line-height: 1.5; color: var(--text-secondary); }
.bench-disputes,
.bench-method,
.bench-source-list,
.bench-changelog { font-size: var(--t-sm) !important; line-height: 1.6 !important; }
.bench-disputes li,
.bench-method li,
.bench-source-list li,
.bench-changelog li { margin-bottom: 0.45rem; }
.bench-source-type {
  font-family: ui-monospace, "Cascadia Code", Menlo, Consolas, monospace;
  font-size: var(--t-xs);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-left: 4px;
}
.bench-changelog { list-style: none; padding-left: 0 !important; }
.bench-changelog time { color: var(--text-muted); margin-right: 6px; font-variant-numeric: tabular-nums; }

/* full table */
.bench-matrix-wrap {
  position: relative; /* contains the visually-hidden spans (mobile overflow fix) */
  border: 1px solid var(--bench-line);
  border-radius: var(--r-card);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.bench-matrix {
  width: 100%;
  min-width: 820px;
  border-collapse: separate;
  border-spacing: 0;
  font-size: var(--t-sm);
  margin: 0;
}
.bench-matrix thead th {
  background: var(--bench-card);
  text-align: left;
  vertical-align: bottom;
  padding: 16px 10px 10px;
  border-bottom: 1px solid var(--bench-line);
  font-weight: 600;
}
.bench-col-bench { width: 190px; }
.bench-col-lead { width: 150px; }
.bench-model-name { display: block; color: var(--text-primary); font-size: var(--t-sm); white-space: nowrap; }
.bench-model-vendor,
.bench-col-bench,
.bench-col-lead {
  font-family: ui-monospace, "Cascadia Code", Menlo, Consolas, monospace;
  font-size: var(--t-xs) !important;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
  font-weight: 500;
}
.bench-group-row th {
  text-align: left;
  padding: 16px 14px 4px;
  font-family: ui-monospace, "Cascadia Code", Menlo, Consolas, monospace;
  font-size: var(--t-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.bench-row-head { text-align: left; font-weight: 500; padding: 8px 10px 8px 14px; vertical-align: top; }
.bench-row-name { display: block; color: var(--text-primary); font-weight: 600; }
.bench-row-meta { display: block; font-size: var(--t-xs); color: var(--text-muted); }
.bench-td,
.bench-lead { padding: 4px 6px; vertical-align: top; transition: opacity 0.3s ease, background-color 0.3s ease; }
.bench-row:not(:last-child) > * { border-bottom: 1px solid var(--bench-grid); }
.bench-row:hover > * { background-color: var(--bench-tint); }
.bench-cell {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 2px 6px;
  width: 100%;
  min-height: 44px;
  padding: 6px 6px 8px;
  border: 0;
  border-radius: var(--r-ctl);
  background: transparent;
  font: inherit;
  color: inherit;
  text-align: left;
  cursor: default;
}
.bench-val { font-size: var(--t-md); font-weight: 600; color: var(--text-primary); font-variant-numeric: tabular-nums; }
.bench-td:not(.is-leader) .bench-val { color: var(--text-secondary); font-weight: 500; }
.bench-gap { font-size: var(--t-xs); color: var(--text-muted); font-variant-numeric: tabular-nums; }
.bench-bar {
  flex: 0 0 100%;
  margin-top: 6px;
  position: relative;
  height: 4px;
  border-radius: 2px;
  background: var(--bench-track);
  overflow: hidden;
}
.bench-bar i {
  position: absolute;
  inset: 0 auto 0 0;
  width: var(--w);
  border-radius: 2px;
  background: var(--bench-fill);
  transform-origin: left center;
  transition: transform 0.9s cubic-bezier(0.22, 1, 0.36, 1);
  transition-delay: calc(var(--i, 0) * 45ms);
}
.is-leader .bench-bar i { background: var(--text-primary); }
.bench-bar--dot { overflow: visible; }
.bench-bar--dot i {
  inset: 50% auto auto var(--w);
  width: 8px;
  height: 8px;
  margin: -4px 0 0 -4px;
  border-radius: 50%;
  box-shadow: 0 0 0 2px var(--bench-card);
}
.bench-mark { font-size: var(--t-xs); font-weight: 700; line-height: 1; color: var(--text-secondary); }
.bench-mark--third { color: var(--text-muted); margin-left: 2px; }
.bench-matrix.is-indep .bench-mark--third { visibility: hidden; }
.bench-na {
  display: block;
  padding: 8px 6px;
  font-size: var(--t-xs);
  color: var(--text-muted);
}
.bench-lead { padding: 10px 14px 8px 6px; }
.bench-lead-name { display: block; color: var(--text-primary); font-weight: 600; white-space: nowrap; }
.bench-lead-margin { display: block; font-size: var(--t-xs); color: var(--text-secondary); font-variant-numeric: tabular-nums; }
.bench-row.is-void > * { opacity: 0.4; }
.bench-key {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 22px;
  list-style: none;
  padding: 0 !important;
  margin: 0.75rem 0 0 !important;
  font-size: var(--t-xs) !important;
  line-height: 1.5 !important;
  color: var(--text-muted) !important;
}
.bench-key li { margin: 0; }
.bench-key .bench-mark { display: inline-block; width: 1em; }

/* tooltip */
.bench-tip {
  position: fixed;
  z-index: 60;
  max-width: 300px;
  padding: 10px 12px;
  border: 1px solid var(--border-light);
  border-radius: var(--r-ctl);
  background: var(--surface-elevated);
  box-shadow: var(--bench-shadow);
  font-size: var(--t-xs);
  line-height: 1.45;
  color: var(--text-secondary);
  pointer-events: none;
}
.bench-tip[hidden] { display: none; }
.bench-tip strong { display: block; font-size: var(--t-md); color: var(--text-primary); font-variant-numeric: tabular-nums; }
.bench-tip span { display: block; }
.bench-tip .bench-tip-head { font-weight: 600; color: var(--text-primary); margin-bottom: 2px; }

/* ---------- entrances (below the fold only; never with reduced motion) ---------- */
.is-pre .bench-bar i { transform: scaleX(0); }
.is-pre .bench-bar--dot i { transform: scale(0); }
.is-pre .bench-line,
.is-pre .bench-frontier { stroke-dashoffset: 1; }
.is-pre .bench-pt-dot { transform: scale(0); }
.is-pre.is-in .bench-bar i { transform: scaleX(1); }
.is-pre.is-in .bench-bar--dot i { transform: scale(1); }
.is-pre.is-in .bench-line,
.is-pre.is-in .bench-frontier { stroke-dashoffset: 0; }
.is-pre.is-in .bench-pt-dot { transform: scale(1); }

@media (prefers-reduced-motion: reduce) {
  .bench *,
  .bench *::before { transition-duration: 0s !important; transition-delay: 0s !important; }
}

/* ---------- responsive ---------- */
@media (max-width: 1100px) {
  .bench-cards { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (max-width: 900px) {
  .bench-calc-grid,
  .bench-ref-grid { grid-template-columns: minmax(0, 1fr); }
  .bench-compare-axis,
  .bench-compare-row { grid-template-columns: 150px minmax(0, 1fr) 150px; gap: 12px; }
}
@media (max-width: 700px) {
  .bench-section { margin-top: 3.5rem; }
  .bench-first { margin-top: 2rem; }
  .bench-cards {
    grid-template-columns: none;
    grid-auto-flow: column;
    grid-auto-columns: 82%;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    padding-bottom: 8px;
    -webkit-mask-image: linear-gradient(90deg, #000 88%, transparent);
    mask-image: linear-gradient(90deg, #000 88%, transparent);
  }
  .bench-card { scroll-snap-align: start; }
  .bench-verdict li { font-size: var(--t-md) !important; }
  .bench-compare,
  .bench-calc,
  .bench-figure { padding: var(--pad-card) 14px; }
  .bench-compare-axis { display: none; }
  .bench-compare-row {
    grid-template-columns: minmax(0, 1fr) auto;
    grid-template-areas: "name diff" "bar bar";
    gap: 6px 12px;
    padding: 10px 0;
  }
  .bench-compare-name { grid-area: name; }
  .bench-compare-diff { grid-area: diff; text-align: right; }
  .bench-compare-bar { grid-area: bar; }
  .bench-compare-none { grid-column: 1 / -1; }
  .bench-select select { min-width: 0; width: 100%; }
  .bench-select { flex: 1 1 140px; }
  .bench-calc-input { grid-template-columns: minmax(0, 1fr) auto; }
  .bench-calc-input label { grid-column: 1 / -1; }
  .bench-matrix { min-width: 760px; }
  .bench-matrix .bench-row-head,
  .bench-matrix thead .bench-col-bench { position: sticky; left: 0; z-index: 1; background: var(--bench-card); }
  .bench-matrix-wrap { -webkit-mask-image: linear-gradient(90deg, #000 90%, transparent); mask-image: linear-gradient(90deg, #000 90%, transparent); }
}
@media (max-width: 640px) {
  .bench-svg-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; margin: 0 -12px; padding: 0 12px; }
  .bench-cost .bench-svg { min-width: 560px; }
}

/* ---------- cost section v4: chart + insights, effort steps, table toggle ---------- */
.bench-cost-panel[hidden] { display: none; }
.bench-cost-panel + .bench-cost-panel { margin-top: 3rem; }
.js-bench .bench-cost-panel + .bench-cost-panel { margin-top: 0; }
.js-bench .bench-cost-panel-title { display: none; }
.article-prose .bench-cost-panel-title { margin: 2rem 0 1rem; font-size: var(--t-xl); }
.bench-cost-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 16px;
  align-items: start;
}
.bench-cost-grid .bench-figure { margin: 0; }
.bench-legend { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 14px; margin: 0 0 12px; }
.bench-legend-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 32px;
  padding: 0 12px;
  border: 1px solid var(--bench-line);
  border-radius: 999px;
  background: transparent;
  font: inherit;
  font-size: var(--t-xs);
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}
.bench-legend-btn:hover { color: var(--text-primary); }
.bench-legend-btn[aria-pressed="true"] { color: var(--text-primary); border-color: var(--text-primary); }
.bench-legend-btn:focus-visible { outline: 2px solid var(--green); outline-offset: 2px; }
.bench-legend-key { display: inline-flex; align-items: center; gap: 8px; font-size: var(--t-xs); color: var(--text-muted); }
.bench-swatch--hollow { background: transparent; box-shadow: inset 0 0 0 2px var(--text-muted); }
.bench-pt.is-dominated .bench-pt-dot { fill: var(--bench-card); stroke: var(--c); stroke-width: 2; }
.bench-pt.is-sweet .bench-pt-dot { stroke: var(--text-primary); stroke-width: 2.5; }

.bench-insights {
  padding: var(--pad-card);
  border: 1px solid var(--bench-line);
  border-radius: var(--r-card);
  background: var(--bench-card);
}
.bench-insights ol {
  list-style: none;
  counter-reset: ins;
  margin: 12px 0 0 !important;
  padding: 0 !important;
  display: grid;
  gap: 16px;
}
.bench-insights li {
  counter-increment: ins;
  position: relative;
  margin: 0 !important;
  padding-left: 30px;
  font-size: var(--t-sm) !important;
  line-height: 1.5 !important;
  color: var(--text-secondary) !important;
}
.bench-insights li::before {
  content: counter(ins);
  position: absolute;
  left: 0;
  top: 1px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: var(--t-xs);
  font-weight: 700;
  color: var(--bench-card);
  background: var(--text-primary);
}
.bench-insights li strong { display: block; color: var(--text-primary); margin-bottom: 2px; }

.bench-ladder {
  margin-top: 16px;
  padding: var(--pad-panel);
  border: 1px solid var(--bench-line);
  border-radius: var(--r-card);
  background: var(--bench-card);
}
.bench-ladder-head { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 10px 16px; margin-bottom: 8px; }
.article-prose .bench-ladder-head .bench-h3 { margin: 0; }
.bench-chips { display: flex; flex-wrap: wrap; gap: 6px; }
.bench-chips[hidden] { display: none; }
.bench-chip {
  font: inherit;
  font-size: var(--t-xs);
  font-weight: 600;
  min-height: 32px;
  padding: 0 12px;
  border: 1px solid var(--bench-line);
  border-radius: 999px;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease;
}
.bench-chip[aria-pressed="true"] { color: var(--text-primary); border-color: var(--text-primary); }
.bench-chip:focus-visible { outline: 2px solid var(--green); outline-offset: 2px; }
.bench-ladder-model[hidden] { display: none; }
.bench-ladder-model + .bench-ladder-model { margin-top: 16px; }
.js-bench .bench-ladder-model + .bench-ladder-model { margin-top: 0; }
.article-prose .bench-ladder-name { margin: 8px 0 6px; font-size: var(--t-sm); font-weight: 700; color: var(--text-primary); }
.js-bench .bench-ladder-name { display: none; }
.bench-ladder-row {
  display: grid;
  grid-template-columns: 140px minmax(0, 1fr) 130px 150px;
  align-items: center;
  gap: 14px;
  min-height: 40px;
  border-bottom: 1px solid var(--bench-grid);
  font-size: var(--t-sm);
}
.bench-ladder-row:last-child { border-bottom: 0; }
.bench-ladder-step { color: var(--text-secondary); }
.bench-ladder-bar { position: relative; height: 10px; border-radius: 5px; background: var(--bench-track); }
.bench-ladder-bar i { position: absolute; inset: 0 auto 0 0; width: min(var(--w), 100%); border-radius: 5px; background: var(--c, var(--bench-s0)); }
.bench-ladder-gain { font-weight: 700; color: var(--text-primary); font-variant-numeric: tabular-nums; }
.bench-ladder-cost { color: var(--text-muted); font-variant-numeric: tabular-nums; text-align: right; }
.bench-ladder-row.is-flat .bench-ladder-gain { color: var(--text-muted); }

.bench-table-toggle { margin-top: 12px; }
.bench-table-toggle > summary {
  cursor: pointer;
  font-size: var(--t-sm);
  font-weight: 600;
  color: var(--text-secondary);
  padding: 8px 0;
}
.bench-table-toggle .table-scroll { margin: 8px 0 0; }
.bench-table-toggle .house-table th,
.bench-table-toggle .house-table td { padding: 0.55rem 0.75rem; font-size: var(--t-sm); }
.bench-table-toggle .house-table thead th { white-space: nowrap; font-size: var(--t-xs); }
.bench-table-toggle .house-table th[scope="row"] {
  font-family: inherit;
  letter-spacing: 0;
  text-transform: none;
  color: var(--text-primary);
  font-weight: 500;
  white-space: nowrap;
  border-bottom: 1px solid var(--bench-grid);
}
.bench-table-toggle .bench-swatch { margin-right: 8px; }
.bench-table-toggle tr.is-sweet th,
.bench-table-toggle tr.is-sweet td { font-weight: 700; color: var(--text-primary); }
.bench-sweet-tag {
  display: inline-block;
  margin-left: 6px;
  padding: 1px 8px;
  border: 1px solid var(--bench-line);
  border-radius: 999px;
  font-size: var(--t-xs);
  font-weight: 600;
  color: var(--text-secondary);
}

@media (max-width: 1000px) {
  .bench-cost-grid { grid-template-columns: minmax(0, 1fr); }
  .bench-insights { order: -1; }
}
@media (max-width: 700px) {
  .bench-ladder { padding: var(--pad-card) 14px; }
  .bench-ladder-row { grid-template-columns: minmax(0, 1fr) auto auto; grid-template-areas: "step gain cost" "bar bar bar"; gap: 4px 12px; padding: 8px 0; }
  .bench-ladder-step { grid-area: step; }
  .bench-ladder-gain { grid-area: gain; }
  .bench-ladder-cost { grid-area: cost; }
  .bench-ladder-bar { grid-area: bar; }
}

/* scores published elsewhere on another setting: shown, never compared */
.bench-else { display: block; padding: 6px 6px 8px; }
.bench-else-val { font-size: var(--t-md); color: var(--text-muted); font-variant-numeric: tabular-nums; }
.bench-else-src { display: block; font-size: var(--t-xs); color: var(--text-muted); }

.bench-ladder-cols { min-height: 28px; border-bottom: 1px solid var(--bench-line); font-size: var(--t-xs); color: var(--text-muted); }
.bench-ladder-cols span:nth-child(2) { grid-column: 2 / span 2; }
.bench-ladder-cols span:last-child { text-align: right; }
.bench-compare-ticks { display: grid; grid-template-columns: 210px minmax(0, 1fr) 190px; gap: 16px; font-size: var(--t-xs); color: var(--text-muted); }
.bench-compare-ticks > span:nth-child(2) { display: flex; justify-content: space-between; }
.article-prose .bench-compare-lens { margin: 0 0 4px; font-size: var(--t-xs); color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.08em; font-family: ui-monospace, "Cascadia Code", Menlo, Consolas, monospace; }
.article-prose .bench-compare-scale { margin: 14px 0 0; font-size: var(--t-xs); color: var(--text-muted); }
@media (max-width: 900px) { .bench-compare-ticks { grid-template-columns: 150px minmax(0, 1fr) 150px; gap: 12px; } }
@media (max-width: 700px) { .bench-compare-ticks { display: none; } .bench-ladder-cols { display: none; } }

.bench-ref-sources { padding-bottom: var(--pad-panel) !important; }
.bench-ref-sources .bench-source-list { columns: 2; column-gap: 40px; }
.bench-ref-sources .bench-source-list li { break-inside: avoid; }
@media (max-width: 900px) { .bench-ref-sources .bench-source-list { columns: 1; } }