:root {
  --bg: #f8f7f3;
  --surface: #ffffff;
  --sunken: #f0efe8;
  --ink: #1b2220;
  --ink-2: #3a4542;
  --muted: #64706c;
  --line: #e0dfd6;
  --line-strong: #c8c7bd;
  --accent: #0e6b60;
  --accent-hover: #0a5249;
  --accent-ink: #ffffff;
  --accent-soft: #e1eeea;
  --warm: #9c4a19;
  --code-bg: #f1f0ea;
  --shadow: 0 1px 2px rgba(27, 34, 32, .05), 0 6px 20px rgba(27, 34, 32, .05);

  --serif: "Source Serif 4", "Source Serif Pro", Georgia, "Times New Roman", serif;
  --sans: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --wrap: 68rem;
  --gutter: clamp(1rem, 4vw, 2rem);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1413;
    --surface: #151c1a;
    --sunken: #121816;
    --ink: #e6ebe8;
    --ink-2: #c4cdc9;
    --muted: #93a19c;
    --line: #25302c;
    --line-strong: #34403c;
    --accent: #52c2b1;
    --accent-hover: #74d4c5;
    --accent-ink: #06110f;
    --accent-soft: #15302b;
    --warm: #e39a63;
    --code-bg: #121917;
    --shadow: none;
    color-scheme: dark;
  }
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-padding-top: 4.5rem; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 400 1.0625rem/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; }

a { color: var(--accent); text-underline-offset: .18em; text-decoration-thickness: 1px; }
a:hover { color: var(--accent-hover); }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 3px; }

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(1.4) blur(8px);
  -webkit-backdrop-filter: saturate(1.4) blur(8px);
  border-bottom: 1px solid var(--line);
}

.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 3.5rem;
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  color: var(--ink);
  text-decoration: none;
  font: 600 1rem/1 var(--mono);
  letter-spacing: .14em;
}
.wordmark:hover { color: var(--ink); }
.wordmark svg { width: 1.35rem; height: 1.35rem; flex: none; }

.site-nav { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: .25rem 1.25rem; }
.site-nav a {
  color: var(--ink-2);
  text-decoration: none;
  font-size: .9375rem;
  font-weight: 500;
  padding-block: .25rem;
  border-bottom: 2px solid transparent;
}
.site-nav a:hover { color: var(--accent); }
.site-nav a[aria-current="page"] { color: var(--ink); border-bottom-color: var(--accent); }

/* Hero */

.hero { padding-block: clamp(3rem, 8vw, 5.5rem) clamp(2rem, 5vw, 3rem); }

.eyebrow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .5rem .75rem;
  margin: 0 0 1rem;
  color: var(--accent);
  font: 500 .8125rem/1.3 var(--mono);
  letter-spacing: .12em;
  text-transform: uppercase;
}
.version-pill {
  padding: .2rem .55rem;
  border-radius: 999px;
  background: var(--accent-soft);
  letter-spacing: .06em;
  white-space: nowrap;
}

.title { margin: 0; text-wrap: balance; }
.title-mark {
  display: block;
  font: 700 clamp(3.25rem, 11vw, 6rem)/.95 var(--serif);
  letter-spacing: -.02em;
}
.title-sub {
  display: block;
  max-width: 34ch;
  margin-top: 1rem;
  font: 600 clamp(1.3rem, 3.2vw, 1.875rem)/1.25 var(--serif);
  color: var(--ink-2);
  text-wrap: balance;
}

.authors { margin: 2rem 0 .25rem; font-size: 1.0625rem; font-weight: 500; }
.authors sup, .affil sup { color: var(--muted); font-weight: 400; }
.affil { margin: 0; color: var(--muted); font-size: .9375rem; }

.actions { display: flex; flex-wrap: wrap; gap: .625rem; margin-top: 2rem; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .6rem 1rem;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: var(--surface);
  color: var(--ink);
  font: 500 .9375rem/1 var(--sans);
  text-decoration: none;
  transition: border-color .15s, background-color .15s, color .15s;
}
.btn:hover { border-color: var(--accent); color: var(--accent); }
.btn svg { width: 1.05rem; height: 1.05rem; flex: none; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); color: var(--accent-ink); }

/* Facts band */

.facts { border-block: 1px solid var(--line); background: var(--surface); }
.facts-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  margin-block: 0;
}
.fact {
  display: flex;
  flex-direction: column-reverse;
  justify-content: flex-end;
  gap: .3rem;
  padding: 1.4rem 1rem 1.4rem 0;
}
.fact + .fact { padding-left: 1rem; border-left: 1px solid var(--line); }
.fact dd {
  margin: 0;
  font: 500 clamp(1.5rem, 3vw, 2rem)/1 var(--mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: -.02em;
}
.fact dt { color: var(--muted); font-size: .8125rem; line-height: 1.35; }

/* Sections */

.section { padding-block: clamp(2.75rem, 6vw, 4.25rem); }
.section + .section { border-top: 1px solid var(--line); }

.section-head { display: grid; gap: .5rem; margin-bottom: 1.75rem; }
.section-head h2 {
  margin: 0;
  font: 700 clamp(1.6rem, 3.4vw, 2.125rem)/1.15 var(--serif);
  letter-spacing: -.01em;
  text-wrap: balance;
}
.kicker {
  margin: 0;
  color: var(--muted);
  font: 500 .75rem/1.3 var(--mono);
  letter-spacing: .12em;
  text-transform: uppercase;
}

.prose { max-width: none; }
.prose p { margin: 0 0 1rem; }
.prose p:last-child { margin-bottom: 0; }
.lead { font-size: 1.125rem; color: var(--ink-2); }

.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 2.5rem; align-items: start; }

/* Tables */

.table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }

table.data {
  width: 100%;
  border-collapse: collapse;
  font-size: .9375rem;
  font-variant-numeric: tabular-nums;
}
table.data caption {
  caption-side: bottom;
  padding-top: .75rem;
  color: var(--muted);
  font-size: .8125rem;
  text-align: left;
}
table.data th, table.data td { padding: .65rem .75rem; text-align: left; vertical-align: baseline; }
table.data thead th {
  color: var(--muted);
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  border-bottom: 1px solid var(--line-strong);
  white-space: nowrap;
}
table.data tbody td, table.data tbody th { border-bottom: 1px solid var(--line); }
table.data .num { text-align: right; font-family: var(--mono); font-size: .875rem; }
table.data thead .num { font-family: var(--sans); font-size: .75rem; }
table.data tfoot td { font-weight: 600; border-top: 1px solid var(--line-strong); }
table.data td:first-child, table.data th:first-child { padding-left: 0; }
table.data td:last-child, table.data th:last-child { padding-right: 0; }
.cell-sub { display: block; color: var(--muted); font-size: .8125rem; }

/* Pipeline */

.stages {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
  counter-reset: stage -1;
}
.stage {
  position: relative;
  padding: 1.25rem 1.25rem 1.4rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: .75rem;
  counter-increment: stage;
}
.stage::before {
  content: "Stage " counter(stage);
  display: block;
  margin-bottom: .5rem;
  color: var(--accent);
  font: 500 .75rem/1 var(--mono);
  letter-spacing: .1em;
  text-transform: uppercase;
}
.stage h3 { margin: 0 0 .5rem; font: 600 1.125rem/1.3 var(--serif); }
.stage p { margin: 0; color: var(--ink-2); font-size: .9375rem; line-height: 1.55; }

/* Findings */

.findings { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 2rem; margin: 0; padding: 0; list-style: none; }
.finding { border-top: 2px solid var(--accent); padding-top: 1rem; }
.finding h3 { margin: 0 0 .5rem; font: 600 1.125rem/1.3 var(--serif); }
.finding p { margin: 0; color: var(--ink-2); font-size: .9375rem; }
.figure-inline { font-family: var(--mono); font-size: .9em; color: var(--ink); font-weight: 500; }

.more { margin-top: 2rem; }

/* Code */

.code {
  position: relative;
  margin: 0;
  background: var(--code-bg);
  border: 1px solid var(--line);
  border-radius: .75rem;
  min-width: 0;
}
.code pre {
  margin: 0;
  padding: 1.1rem 1.25rem;
  overflow-x: auto;
  font: 400 .8125rem/1.65 var(--mono);
  color: var(--ink);
  tab-size: 4;
}
.code-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: .5rem .75rem .5rem 1.25rem;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font: 500 .75rem/1 var(--mono);
  letter-spacing: .06em;
  text-transform: uppercase;
}
.copy-btn {
  padding: .35rem .7rem;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: var(--surface);
  color: var(--ink-2);
  font: 500 .75rem/1 var(--sans);
  letter-spacing: 0;
  text-transform: none;
  cursor: pointer;
}
.copy-btn:hover { border-color: var(--accent); color: var(--accent); }

.note { color: var(--muted); font-size: .875rem; }

/* Leaderboard */

.page-head { padding-block: clamp(2.5rem, 6vw, 4rem) 1.5rem; }
.page-head h1 { margin: 0 0 1rem; font: 700 clamp(2.25rem, 6vw, 3.25rem)/1.05 var(--serif); letter-spacing: -.015em; }

.filters { display: flex; flex-wrap: wrap; gap: .5rem; margin: 0 0 1.25rem; }
.chip {
  padding: .45rem .85rem;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: var(--surface);
  color: var(--ink-2);
  font: 500 .875rem/1 var(--sans);
  cursor: pointer;
}
.chip:hover { border-color: var(--accent); color: var(--accent); }
.chip[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }

table.board { min-width: 34rem; }
table.board thead tr:not(.grp) th { text-transform: none; letter-spacing: 0; font-size: .8125rem; }
table.board thead tr.grp th { white-space: normal; }
table.board thead tr.grp th { border-bottom: none; padding-bottom: .1rem; color: var(--ink-2); letter-spacing: .04em; }
table.board thead tr.grp th.span { border-bottom: 1px solid var(--line-strong); text-align: center; }
table.board thead tr.grp th.span + th.span { border-left: .75rem solid transparent; }
table.board tbody tr.set-row th {
  padding-top: 1.5rem;
  border-bottom: 1px solid var(--line-strong);
  font: 600 1.0625rem/1.3 var(--serif);
}
table.board tbody tr.set-row th span { margin-left: .5rem; color: var(--muted); font: 400 .8125rem/1 var(--sans); }
table.board .rank { width: 2.5rem; color: var(--muted); font-family: var(--mono); font-size: .875rem; }
table.board .model a { color: var(--ink); font-weight: 600; text-decoration: none; }
table.board .model a:hover { color: var(--accent); text-decoration: underline; }
table.board .key { background: var(--accent-soft); }
table.board .best { font-weight: 600; color: var(--ink); }
table.board td.num { color: var(--ink-2); }
table.board td.num.best { color: var(--ink); }
table.board td.harness { font-size: .9375rem; white-space: nowrap; }
table.board .harness-sub { display: none; }
table.board .model .harness-sub a { color: var(--accent); font-weight: 400; font-size: inherit; text-decoration: underline; }
@media (max-width: 720px) {
  table.board .harness { display: none; }
  table.board .harness-sub { display: block; margin-top: .15rem; }
}
.tag {
  display: inline-block;
  margin-right: .25rem;
  padding: .1rem .4rem;
  border: 1px solid var(--line-strong);
  border-radius: .3rem;
  color: var(--muted);
  font: 500 .6875rem/1.3 var(--mono);
  letter-spacing: .02em;
  vertical-align: .1em;
  white-space: nowrap;
}

.defs { display: grid; grid-template-columns: max-content minmax(0, 1fr); gap: .6rem 1.25rem; margin: 0; }
.defs dt { font: 500 .875rem/1.55 var(--mono); color: var(--ink); }
.defs dd { margin: 0; color: var(--ink-2); font-size: .9375rem; }

/* Footer */

.site-footer { border-top: 1px solid var(--line); padding-block: 2rem 2.5rem; color: var(--muted); font-size: .875rem; }
.footer-row { display: flex; flex-wrap: wrap; justify-content: space-between; gap: .75rem 2rem; }
.footer-row p { margin: 0; }
.footer-links { display: flex; flex-wrap: wrap; gap: .5rem 1.25rem; }
.footer-links a { color: var(--ink-2); text-decoration: none; }
.footer-links a:hover { color: var(--accent); }

/* Hero figure */

.hero-grid { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr); gap: 3rem; align-items: center; }
.hero-figure { min-width: 0; }
.hero-fig { display: block; width: 100%; max-width: 27rem; height: auto; margin-inline: auto; overflow: visible; }
.fig-h { font: 600 15px var(--serif); fill: var(--ink); }
.fig-s { font: 500 11px var(--mono); fill: var(--muted); letter-spacing: .02em; }
.fig-hop { font: 500 12px var(--mono); fill: var(--accent); }
.fig-l { font: 400 11.5px var(--sans); fill: var(--ink-2); }

.table-note { margin: .75rem 0 0; }
.narrow-only { display: none; }

/* Responsive */

@media (max-width: 960px) {
  .hero-grid { grid-template-columns: minmax(0, 1fr); gap: 2.5rem; }
  .hero-fig { margin-inline: 0; }
  .facts-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .fact:nth-child(4) { padding-left: 0; border-left: none; }
  .fact:nth-child(n+4) { border-top: 1px solid var(--line); }
  .stages { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .findings { grid-template-columns: minmax(0, 1fr); gap: 1.5rem; }
  .split { grid-template-columns: minmax(0, 1fr); gap: 2rem; }
}

@media (max-width: 560px) {
  body { font-size: 1rem; }
  .header-row { flex-wrap: wrap; padding-block: .6rem; }
  .site-nav { justify-content: flex-start; gap: .25rem 1rem; }
  .facts-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .fact { padding: 1.1rem .75rem 1.1rem 0; }
  .fact:nth-child(n) { padding-left: 0; border-left: none; }
  .fact:nth-child(even) { padding-left: .9rem; border-left: 1px solid var(--line); }
  .fact:nth-child(n+3) { border-top: 1px solid var(--line); }
  .stages { grid-template-columns: minmax(0, 1fr); }
  .defs { grid-template-columns: minmax(0, 1fr); gap: .15rem; }
  .defs dd { margin-bottom: .6rem; }
  .wide-only { display: none; }
  .narrow-only { display: inline; }
  table.board { min-width: 0; }
  table.board th, table.board td { padding-inline: .15rem; }
  table.board .rank { width: 1rem; }
  table.board .model a { font-size: .8125rem; }
  table.board .cell-sub { font-size: .6875rem; }
  table.board .tag { white-space: normal; }
  table.board thead tr.grp th { letter-spacing: 0; }
  table.board thead tr.grp th.span + th.span { border-left-width: .4rem; }
  table.board td.num { font-size: .75rem; }
  table.board thead tr:not(.grp) th, table.board thead tr.grp th { font-size: .6875rem; }
}

/* Additions */

figure { margin: 0; }
.code-stack { display: grid; gap: 1rem; margin-top: 1.5rem; }
code { font: 500 .875em/1 var(--mono); background: var(--sunken); border: 1px solid var(--line); border-radius: .3rem; padding: .1em .35em; }

/* Pipeline and audit figures */

.shot { display: grid; gap: .65rem; min-width: 0; }
.shot a { display: block; }
.shot img { display: block; width: 100%; border: 1px solid var(--line); border-radius: .6rem; background: var(--sunken); }
.shot figcaption { color: var(--muted); font-size: .875rem; }
.pipeline-fig { margin-top: 2.5rem; }
.audit-block { display: grid; gap: 1.5rem; margin-top: 3rem; }
.audit-text h3 { margin: 0 0 .6rem; font: 600 1.375rem/1.3 var(--serif); }
.audit-text p { margin: 0 0 1rem; color: var(--ink-2); }
.audit-text p:last-child { margin-bottom: 0; }

[hidden] { display: none !important; }