:root {
  --bg: #F2F4F8;
  --paper: #FFFFFF;
  --surface: #FFFFFF;
  --surface-alt: #EEF1F7;
  --line: rgba(10, 15, 40, 0.08);
  --line-strong: rgba(10, 15, 40, 0.16);
  --text: #0D1117;
  --muted: #64748B;
  --accent: #BE5B2B;
  --accent-soft: rgba(190, 91, 43, 0.09);
  --accent-light: rgba(190, 91, 43, 0.55);
  --mint: #0B9E8A;
  --mint-deep: #0A8070;
  --mint-pale: #5AC8B4;
  --sky: #2563EB;
  --sky-soft: #DBEAFE;
  --sky-line: #93C5FD;
  --violet: #7C3AED;
  --violet-soft: #EDE9FE;
  --violet-line: #C4B5FD;
  --positive: #16A34A;
  --positive-soft: #DCFCE7;
  --positive-line: #86EFAC;
  --negative: #DC2626;
  --negative-soft: #FEE2E2;
  --negative-line: #FCA5A5;
  --quest-row: rgba(11, 158, 138, 0.08);
  --gray-bar: #94A3B8;
  --cover-bg: #0D1117;
  --shadow: 0 1px 3px rgba(10,15,40,0.04), 0 8px 32px rgba(10,15,40,0.08);
  --shadow-card: 0 1px 2px rgba(10,15,40,0.05), 0 2px 10px rgba(10,15,40,0.06);
  --radius-xl: 20px;
  --radius-lg: 16px;
  --radius-md: 10px;
  --content-width: 80vw;
  --article-width: 75vw;
}

* { box-sizing: border-box; }
html {
  scroll-behavior: smooth;
  font-size: 13px;
  overflow-x: hidden;
  max-width: 100vw;
}

body {
  margin: 0;
  overflow-x: hidden;
  color: var(--text);
  font-family: "Manrope", sans-serif;
  background: var(--bg);
}

a { color: inherit; text-decoration: none; }

/* ─── Shell ─────────────────────────────────────────── */
.site-shell {
  width: min(calc(100vw - 48px), var(--content-width));
  margin: 0 auto;
  padding: 24px 0 72px;
}

/* ─── Header ─────────────────────────────────────────── */
.site-header {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 28px;
  padding: 14px 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--shadow-card);
}

.logo { display: inline-flex; flex-direction: column; line-height: 1.2; }
.logo-link { text-decoration: none; color: inherit; }
.logo-link strong,
.brand {
  font-family: "Source Serif 4", "Source Serif Pro", ui-serif, Georgia, serif;
  font-style: italic;
  font-weight: 700;
  color: inherit;
  letter-spacing: -0.005em;
}
.logo-link strong { font-size: 1.32rem; }
.subtitle-link { color: inherit; text-decoration: none; }
.subtitle-link:hover { opacity: 0.7; }

.logo-byline,
.article-meta-row time,
.figure-note,
.recent-item span,
.article-meta-row time,
.figure-note,
.recent-item span,
.site-footer,
.detail-grid dd,
.body-copy p,
.essay-grid p,
.tech-copy p,
.vision-grid p { color: var(--muted); }

.site-nav {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.site-nav a {
  font-size: 0.88rem;
  font-weight: 650;
  color: var(--muted);
  transition: color 140ms ease;
}

.site-nav a:hover { color: var(--text); }

/* ─── Article Shell ──────────────────────────────────── */
.article-shell {
  display: grid;
  grid-template-columns: 196px minmax(0, 1fr);
  align-items: start;
  gap: 28px;
  padding-top: 24px;
}

/* ─── TOC Sidebar ────────────────────────────────────── */
.toc-sidebar {
  position: sticky;
  top: 24px;
  padding: 20px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--shadow-card);
}

.toc-label {
  margin-bottom: 12px;
  color: var(--accent);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.toc-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 2px;
}

.toc-list li {
  counter-increment: toc-item;
}

.toc-list a {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 6px 8px;
  border-radius: 8px;
  font-size: 0.82rem;
  color: var(--muted);
  line-height: 1.35;
  transition: background 120ms ease, color 120ms ease;
}

.toc-list a::before {
  content: counter(toc-item);
  flex-shrink: 0;
  width: 16px;
  font-size: 0.66rem;
  font-weight: 700;
  color: var(--line-strong);
  text-align: right;
}

.toc-list a:hover {
  background: var(--accent-soft);
  color: var(--accent);
}

.toc-list a.toc-active {
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 600;
}

/* ─── Article Card ───────────────────────────────────── */
.article {
  width: 100%;
  max-width: 100%;
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background: var(--paper);
  box-shadow: var(--shadow);
}

/* ─── Meta Row ───────────────────────────────────────── */
.article-meta-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  max-width: 1180px;
  margin: 0 auto 22px;
  padding: 0;
}

.meta-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--accent);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

/* ─── Cover ──────────────────────────────────────────── */
.cover {
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(238, 241, 247, 0.72), rgba(255, 255, 255, 0));
}

/* ─── Article Head ───────────────────────────────────── */
.article-head {
  padding: 46px 64px 44px;
  text-align: center;
}

.article-head h1,
.section-head h2,
.showcase-card h3,
.benchmark-card h3,
.tech-copy h3,
.recent-item strong {
  font-family: "Source Serif 4", serif;
}

.article-head h1 {
  max-width: min(100%, 1320px);
  margin: 0 auto;
  font-family: "Manrope", sans-serif;
  font-size: 2.5rem;
  line-height: 1.06;
  letter-spacing: -0.055em;
  color: #333333;
  font-weight: 800;
}

.article-head .title-line {
  display: block;
  white-space: nowrap;
}

.subtitle {
  max-width: 48ch;
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 1.06rem;
  line-height: 1.65;
}

.author-block {
  max-width: 1420px;
  margin: 24px auto 0;
  color: #2C9BEF;
}

.author-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 4px 15px;
  margin: 8px 0 0;
  font-size: 1.08rem;
  font-weight: 500;
  line-height: 1.35;
}

.author-row span {
  white-space: nowrap;
}

.author-row a {
  color: inherit;
  text-decoration: none;
}

.author-row a:hover {
  text-decoration: underline;
  text-underline-offset: 4px;
}

.author-row sup {
  margin-left: 1px;
  color: #444444;
  font-size: 0.68em;
  line-height: 0;
}

.affiliation-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px 44px;
  margin: 18px 0 0;
  color: #4B4B4B;
  font-size: 1.05rem;
  font-weight: 500;
  line-height: 1.4;
}

.affiliation-row sup {
  margin-right: 2px;
  font-size: 0.72em;
}

.contribution-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 4px 18px;
  margin: 8px 0 0;
  color: #666666;
  font-size: 0.92rem;
  font-style: italic;
  line-height: 1.35;
}

.resource-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin-top: 24px;
}

.resource-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  min-width: 0;
  padding: 10px 22px;
  border: 0;
  border-radius: 999px;
  background: #333333;
  color: #FFFFFF;
  box-shadow: 0 2px 8px rgba(10, 15, 40, 0.13);
  transition: border-color 160ms ease, background 160ms ease, transform 160ms ease;
}

.resource-link:hover {
  transform: translateY(-1px);
  background: #1F1F1F;
}

.resource-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  flex: 0 0 28px;
}

.resource-icon img {
  display: block;
  width: 27px;
  height: 27px;
  object-fit: contain;
}

.resource-icon svg {
  display: block;
  width: 24px;
  height: 24px;
  fill: #FFFFFF;
}

.resource-link strong {
  display: block;
  font-size: 1.02rem;
  font-weight: 650;
  line-height: 1.15;
}

.resource-link small {
  display: none;
}

/* ─── Lede ───────────────────────────────────────────── */
.lede { padding: 32px 76px 20px; border-bottom: 1px solid var(--line); }

.lede p {
  margin: 0 0 14px;
  font-size: 1.18rem;
  line-height: 1.8;
}

.top-benchmark-showcase {
  padding: 26px 24px 42px;
  border-bottom: 1px solid var(--line);
}

.top-benchmark-showcase .benchmark-hero-panel {
  margin-top: 0;
}

.showcase-copy {
  margin-top: 18px;
}

.showcase-copy p {
  margin-bottom: 0;
}

/* ─── Sections ───────────────────────────────────────── */
.section {
  margin-top: 0;
  padding: 52px 24px;
  border-top: 1px solid var(--line);
  background: transparent;
}

.section-head { margin-bottom: 24px; }

.section-head h2 {
  margin: 8px 0 0;
  font-size: 2rem;
  line-height: 1.05;
  letter-spacing: -0.03em;
}

/* ─── Benchmark Board ────────────────────────────────── */
.benchmark-board {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--surface-alt);
}

.benchmark-card,
.diagram-card {
  border: 1px solid var(--line);
  background: var(--paper);
  box-shadow: var(--shadow-card);
}

.benchmark-card {
  padding: 16px 14px 20px;
  border-radius: 14px;
}

.benchmark-card h3 {
  margin: 0 0 14px;
  font-size: 1.05rem;
  font-weight: 700;
  text-align: center;
  letter-spacing: -0.01em;
}

.mini-chart {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  align-items: flex-end;
  gap: 7px;
  min-height: 190px;
}

.mini-bar {
  position: relative;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  height: calc(var(--value) * 1.75px);
  border-radius: 5px 5px 0 0;
  padding: 8px 3px 5px;
  overflow: visible;
}

.mini-bar strong {
  position: absolute;
  top: -20px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.76rem;
  font-weight: 700;
  white-space: nowrap;
  color: var(--text);
}

.mini-bar span {
  display: block;
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  text-align: left;
  font-size: 0.6rem;
  line-height: 1.2;
  color: rgba(255, 255, 255, 0.8);
}

.mini-bar.mint {
  background: linear-gradient(180deg, var(--mint) 0%, var(--mint-deep) 100%);
}

.mini-bar.pale {
  background: linear-gradient(180deg, var(--mint-pale) 0%, #44B4A4 100%);
}

.mini-bar.gray {
  background: linear-gradient(180deg, #C8D5E2 0%, var(--gray-bar) 100%);
}

.mini-bar.gray span { color: rgba(30, 40, 60, 0.5); }

.figure-note { margin: 12px 4px 0; font-size: 0.86rem; }

/* ─── Smaller Model Charts ───────────────────────────── */
.small-model-panel {
  margin-top: 22px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--surface-alt);
}

.small-model-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  align-items: center;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.small-model-legend span {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 600;
}

.small-model-legend i {
  width: 10px;
  height: 10px;
  border-radius: 3px;
  flex-shrink: 0;
}

.legend-2b { background: #BFDBFE; }
.legend-4b { background: #93C5FD; }
.legend-9b { background: #60A5FA; }
.legend-35b { background: #3A55E3; border: 1px solid #273DB5; }
.legend-quest-model { background: #4360E8; border: 1px solid #344BC7; }
.legend-tongyi { background: #C63F00; border: 1px solid #A63400; }
.legend-openresearcher { background: #008B5F; border: 1px solid #00754F; }
.legend-sft { background: #3B82F6; border: 1px solid #2563EB; }
.legend-mt { background: #1D4ED8; border: 1px solid #1E40AF; }
.legend-stage-line {
  width: 22px;
  height: 2px;
  background: #1D4ED8;
  border-radius: 1px;
  display: inline-block;
  vertical-align: middle;
}

.small-model-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.small-model-card {
  min-width: 0;
  padding: 14px 14px 10px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--paper);
}

.small-model-card h4 {
  margin: 0;
  min-height: 2em;
  color: var(--text);
  font-size: 0.84rem;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.chart-metric {
  margin: 3px 0 8px !important;
  color: var(--muted) !important;
  font-size: 0.64rem !important;
  font-weight: 600 !important;
  letter-spacing: 0.04em !important;
  text-transform: uppercase !important;
}

.chart-wrap {
  position: relative;
  height: 155px;
}

.benchmark-comparison-panel {
  margin-top: 22px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #EEF2F8;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.72);
}

.benchmark-hero-panel {
  position: relative;
  margin-top: 26px;
  padding: 12px;
  border-color: rgba(36, 77, 199, 0.18);
  border-radius: 18px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.78), rgba(255, 255, 255, 0.42)),
    #EAF0FA;
  box-shadow: 0 18px 50px rgba(31, 41, 74, 0.12);
}

.benchmark-panel-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 14px;
  padding: 0 2px;
}

.benchmark-panel-head span {
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.benchmark-panel-head strong {
  color: var(--text);
  font-size: 1.02rem;
  font-weight: 800;
  line-height: 1.25;
  text-align: right;
}

.agent-table-shell {
  margin-top: 30px;
  overflow: hidden;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #EEF2F8;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.72);
}

.agent-table-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 0 2px 12px;
  border-bottom: 1px solid rgba(100, 116, 139, 0.16);
  background: transparent;
}

.agent-table-heading > div:first-child > span {
  display: block;
  color: #C05621;
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.agent-table-heading > div:first-child > strong {
  display: block;
  margin-top: 3px;
  color: var(--text);
  font-size: 0.96rem;
  font-weight: 800;
  line-height: 1.28;
}

.agent-table-legend {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 6px;
  color: var(--muted);
  font-size: 0.68rem;
  font-weight: 700;
}

.agent-table-legend span {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 7px;
  border: 1px solid rgba(148, 163, 184, 0.22);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  color: var(--muted);
  font-size: 0.68rem;
  letter-spacing: 0;
  text-transform: none;
}

.agent-table-legend i {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: #CFEFFF;
  border: 1px solid #7DD3FC;
}

.agent-table-legend strong {
  color: var(--text);
  font-weight: 800;
}

.legend-under {
  color: #172033;
  font-weight: 800;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.agent-table-wrap {
  margin-top: 12px;
  overflow-x: auto;
  border: 1px solid rgba(100, 116, 139, 0.12);
  border-radius: 12px;
  background: #FFFFFF;
  box-shadow: 0 1px 0 rgba(15, 23, 42, 0.04);
}

.agent-comparison-table {
  width: 100%;
  min-width: 1040px;
  border-collapse: separate;
  border-spacing: 0;
  color: #26364F;
  font-family: "Manrope", sans-serif;
  font-size: 0.82rem;
  line-height: 1.25;
}

.agent-comparison-table th,
.agent-comparison-table td {
  padding: 9px 10px;
  border-bottom: 1px solid rgba(226, 232, 240, 0.78);
  text-align: center;
  white-space: nowrap;
}

.agent-comparison-table th:first-child,
.agent-comparison-table td:first-child {
  position: sticky;
  left: 0;
  z-index: 2;
  min-width: 178px;
  text-align: left;
}

.agent-comparison-table thead th:first-child {
  z-index: 4;
}

.agent-comparison-table thead th {
  position: sticky;
  top: 0;
  z-index: 3;
  color: #6B7A93;
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.agent-table-top th {
  padding-top: 12px;
  padding-bottom: 9px;
  background: #F8FAFC;
}

.agent-table-top th:first-child {
  background: #F1F5F9;
  border-right: 1px solid rgba(100, 116, 139, 0.16);
}

.task-group-objective {
  color: #1D4ED8 !important;
  background: #F1F6FF !important;
}

.task-group-open {
  color: #7C3AED !important;
  background: #F6F2FF !important;
  border-left: 1px solid rgba(100, 116, 139, 0.28);
}

.agent-comparison-table thead tr:last-child th {
  background: #FFFFFF;
  color: #75849A;
  font-size: 0.68rem;
}

.agent-comparison-table thead tr:last-child th:nth-child(7),
.agent-comparison-table tbody tr:not(.agent-group-row) td:nth-child(8) {
  border-left: 1px solid rgba(100, 116, 139, 0.28);
}

.agent-group-row td {
  position: static !important;
  padding: 8px 14px;
  border-bottom: 1px solid rgba(148, 163, 184, 0.28);
  background: #EEF2F7 !important;
  color: #475569;
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-align: left !important;
  text-transform: uppercase;
}

.agent-comparison-table tbody tr:not(.agent-group-row):hover td {
  background: #F8FAFC;
}

.agent-comparison-table tbody tr:not(.agent-group-row) td:first-child {
  background: #FFFFFF;
  color: #111827;
  font-weight: 800;
}

.agent-open-row td {
  background: #FFF7EE;
}

.agent-open-row td:first-child {
  background: #FFF7EE !important;
  color: #9A3412 !important;
}

.agent-quest-group-row td {
  border-top: 1px solid rgba(14, 116, 144, 0.22);
  border-bottom: 1px solid rgba(14, 116, 144, 0.18);
  background: #EEF2F7 !important;
  color: #0369A1;
}

.agent-quest-row td {
  border-bottom-color: rgba(14, 165, 233, 0.16);
  background: #EAF8FF;
}

.agent-quest-row td:first-child {
  background: #EAF8FF !important;
  color: #0369A1 !important;
}

.agent-quest-row + .agent-quest-row td {
  border-top: 1px solid rgba(14, 165, 233, 0.18);
}

.agent-quest-row:last-child td {
  border-bottom: 1px solid rgba(14, 116, 144, 0.26);
}

.agent-comparison-table td strong {
  display: inline;
  min-width: 0;
  padding: 0;
  border-radius: 0;
  background: transparent;
  color: inherit;
  font-weight: 800;
}

.score-under {
  display: inline;
  color: inherit;
  font-weight: 800;
  line-height: inherit;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.score-under::after {
  content: none;
}

.agent-comparison-table sup {
  font-size: 0.64em;
  line-height: 0;
}

.benchmark-comparison-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 10px;
}

.benchmark-comparison-card {
  min-width: 0;
  padding: 13px 13px 9px;
  border: 1px solid rgba(10, 15, 40, 0.06);
  border-radius: 12px;
  background: #FFFFFF;
  box-shadow: 0 1px 0 rgba(15, 23, 42, 0.04);
}

.benchmark-comparison-card h4 {
  margin: 0 0 2px;
  color: var(--muted);
  font-size: 0.84rem;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: 0;
  text-transform: none;
}

.benchmark-comparison-chart {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 7px;
  height: 238px;
}

.benchmark-bar-row {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr) 28px;
  gap: 6px;
  align-items: center;
  min-height: 26px;
}

.benchmark-bar-label {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  min-width: 0;
  overflow: hidden;
  color: #64748B;
  font-size: 0.64rem;
  font-weight: 650;
  line-height: 1.15;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.benchmark-bar-icon {
  width: 13px;
  height: 13px;
  object-fit: contain;
  flex: 0 0 auto;
}

.benchmark-bar-icon--letter {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: #2563EB;
  color: #FFFFFF;
  font-family: "Source Serif 4", serif;
  font-style: italic;
  font-size: 11px;
  font-weight: 700;
  line-height: 1;
  box-sizing: border-box;
  padding-bottom: 2px;
}

.benchmark-bar-name {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
}

.benchmark-bar-row.is-quest {
  position: relative;
  isolation: isolate;
}
.benchmark-bar-row.is-quest::before {
  content: '';
  position: absolute;
  inset: -2px -8px;
  background: #DBEAFE;
  border-radius: 6px;
  z-index: -1;
}
.benchmark-bar-row.is-quest .benchmark-bar-label,
.benchmark-bar-row.is-quest .benchmark-bar-value {
  color: #2563EB;
  font-weight: 800;
}

.benchmark-bar-track {
  position: relative;
  height: 14px;
  overflow: hidden;
  border-radius: 4px;
  background: transparent;
}

.benchmark-bar-fill {
  position: absolute;
  inset: 0 auto 0 0;
  width: var(--bar-width);
  min-width: 2px;
  border-radius: inherit;
  background: var(--bar-color);
}

.benchmark-bar-value {
  color: #94A3B8;
  font-size: 0.64rem;
  font-weight: 650;
  line-height: 1;
  text-align: right;
  white-space: nowrap;
}

/* ─── Essay Grid ─────────────────────────────────────── */
.essay-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px;
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.essay-grid h3,
.tech-copy h3 {
  margin: 0 0 10px;
  font-size: 1.3rem;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

/* ─── Pull Quote ─────────────────────────────────────── */
.pull-quote {
  margin: 0 0 28px;
  padding: 22px 26px;
  border-left: 3px solid var(--accent);
  border-radius: 0 14px 14px 0;
  background: var(--accent-soft);
  font-family: "Source Serif 4", serif;
  font-size: 1.6rem;
  line-height: 1.22;
}

/* ─── Body Copy ──────────────────────────────────────── */
.body-copy p,
.tech-copy p {
  margin: 0 0 16px;
  font-size: 1.16rem;
  line-height: 1.75;
}

.essay-grid p,
.vision-grid p {
  margin: 0 0 16px;
  line-height: 1.75;
}


.body-copy p:last-child,
.subsection p:last-child,
.ordered-blocks p:last-child {
  margin-bottom: 0;
}

/* ─── Long-form Blocks ──────────────────────────────── */
.subsection {
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.task-copy .subsection:first-child {
  margin-top: 24px;
}

.task-copy .subsection {
  border-top: 0;
}

.subsection h3 {
  margin: 0 0 12px;
  font-family: "Source Serif 4", serif;
  font-size: 1.46rem;
  line-height: 1.2;
  letter-spacing: -0.015em;
}

.subsection p {
  margin: 0 0 16px;
  font-size: 1.14rem;
  line-height: 1.75;
  color: var(--muted);
}

.stage-stack {
  display: grid;
  gap: 14px;
  margin-top: 14px;
}

.training-data-table {
  margin: 14px 0 18px;
}

.stage-card {
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.62);
  overflow-wrap: break-word;
  word-break: break-word;
  overflow: hidden;
}

.stage-kicker {
  margin-bottom: 7px;
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.stage-card h4 {
  margin: 0 0 10px;
  color: var(--text);
  font-size: 1.12rem;
  font-weight: 800;
  line-height: 1.3;
}

.stage-card p {
  margin: 0 0 10px;
}

.stage-card p:last-child {
  margin-bottom: 0;
}

.stage-card strong {
  color: var(--text);
}

.subhead {
  margin: 18px 0 8px;
  font-size: 0.88rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}

.figure-block {
  margin: 28px 0 0;
}

.article > .comparison-figure {
  margin: 0;
  padding: 32px 76px 52px;
  border-bottom: 1px solid var(--line);
}

.figure-media {
  display: block;
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--surface-alt);
  box-shadow: var(--shadow-card);
}

img.figure-media {
  height: auto;
}

.figure-placeholder {
  display: grid;
  place-items: center;
  min-height: 220px;
  padding: 28px;
  border: 1px dashed var(--line-strong);
  border-radius: 16px;
  background:
    linear-gradient(135deg, rgba(11, 158, 138, 0.05), rgba(190, 91, 43, 0.05)),
    var(--surface-alt);
  text-align: center;
}

.figure-placeholder strong {
  display: block;
  margin-bottom: 6px;
  font-size: 0.82rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}

.figure-placeholder span {
  display: block;
  margin-bottom: 8px;
  font-family: "Source Serif 4", serif;
  font-size: 1.5rem;
  line-height: 1.15;
}

.figure-placeholder small {
  color: var(--muted);
  font-size: 0.85rem;
}

.figure-caption {
  margin-top: 10px;
  color: var(--muted);
  font-size: 0.86rem;
  line-height: 1.6;
}

.table-block {
  margin-top: 28px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--surface-alt);
}

.table-label {
  margin-bottom: 12px;
  color: var(--accent);
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.content-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--paper);
  border-radius: 12px;
  overflow: hidden;
}

.content-table th,
.content-table td {
  padding: 14px 16px;
  border-top: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
  font-size: 0.98rem;
  line-height: 1.6;
}

.content-table thead th {
  border-top: 0;
  background: rgba(10, 15, 40, 0.03);
  color: var(--text);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.content-table tbody td {
  color: var(--muted);
}

.evaluation-overview-grid {
  display: grid;
  grid-template-columns: minmax(240px, 1fr) minmax(0, 3fr);
  gap: 16px;
  align-items: stretch;
  margin-top: 26px;
}

.comparison-col {
  min-width: 0;
  display: flex;
}

.comparison-img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 10px;
}

.comparison-caption {
  margin-top: 10px;
  margin-bottom: 0;
}

.comparison-inline {
  width: 100%;
  min-height: 100%;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--surface-alt);
}

.comparison-inline .table-scroll {
  overflow-x: auto;
}

.comparison-inline .table-label {
  margin: 0;
  padding: 16px 16px 14px;
  border-radius: 16px 16px 0 0;
  background: #EEF2F7;
  color: var(--text);
  font-size: 0.92rem;
  font-weight: 800;
  letter-spacing: 0.01em;
  text-align: center;
  text-transform: none;
}

.comparison-inline .comparison-table {
  width: 100%;
  min-width: 1100px;
  table-layout: fixed;
}

.comparison-col-model        { width: 10%; }
.comparison-col-scale        { width: 6%; }
.comparison-col-coverage     { width: 14%; }
.comparison-col-synth        { width: 8%; }
.comparison-col-verification { width: 11%; }
.comparison-col-context      { width: 10%; }
.comparison-col-pipeline     { width: 18%; }
.comparison-col-data         { width: 7%; }
.comparison-col-synth-code   { width: 9%; }
.comparison-col-train-code   { width: 7%; }

.comparison-inline .comparison-table th,
.comparison-inline .comparison-table td {
  padding: 10px 6px;
  font-size: 0.72rem;
  overflow-wrap: anywhere;
  word-break: normal;
}

.comparison-inline .comparison-group-row th {
  padding-top: 12px;
  padding-bottom: 9px;
  line-height: 1.18;
  white-space: normal;
  overflow-wrap: anywhere;
  text-transform: none;
  letter-spacing: 0;
  font-size: 0.72rem;
  word-break: keep-all;
  hyphens: none;
}

.comparison-inline .comparison-column-row th {
  padding-top: 10px;
  padding-bottom: 11px;
  font-size: 0.66rem;
  line-height: 1.15;
  text-transform: none;
  letter-spacing: 0;
  overflow-wrap: normal;
  word-break: keep-all;
  hyphens: none;
  text-align: center;
}

.comparison-inline .comparison-open-source-head {
  border-left: 1px solid var(--line);
  color: var(--text);
  font-weight: 800;
}

.comparison-inline .comparison-column-row th:first-child {
  border-left: 1px solid var(--line);
  text-align: center;
}

.comparison-inline .comparison-model-cell {
  min-width: 0;
  padding-left: 12px !important;
}

.comparison-inline .comparison-model-head {
  padding-left: 12px !important;
}

.comparison-inline .comparison-model-label {
  font-size: 0.76rem;
  overflow-wrap: normal;
  word-break: keep-all;
  hyphens: none;
}

.comparison-inline .scenario-pill {
  padding: 3px 6px;
  font-size: 0.58rem;
}

.comparison-inline .support-mark {
  width: auto;
  height: auto;
  border: 0;
  background: transparent;
  font-size: 1rem;
}

.comparison-inline .comparison-legend {
  gap: 10px 16px;
  padding: 11px 14px 13px;
}

/* ── Capability Panel ─────────────────────────────────────── */
.cap-panel {
  display: flex;
  flex-direction: column;
  gap: 0;
  max-width: 560px;
  padding: 10px 12px 8px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--surface-alt);
}

.cap-panel .table-label {
  margin: -10px -12px 8px;
  padding: 14px 12px 12px;
  border-radius: 16px 16px 0 0;
  background: #EEF2F7;
  color: var(--text);
  font-size: 0.92rem;
  font-weight: 800;
  letter-spacing: 0.01em;
  line-height: 1.25;
  text-align: center;
  text-transform: none;
}

.cap-legend {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 0 0 8px;
  margin-bottom: 6px;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 700;
}

.cap-legend-row {
  display: flex;
  flex-wrap: wrap;
  gap: 7px 12px;
  align-items: center;
}

.cap-legend span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}

.cap-pills,
.cap-head-dots {
  display: grid;
  grid-template-columns: repeat(3, 14px);
  gap: 8px;
  align-items: center;
  justify-items: center;
  flex-shrink: 0;
}

.cap-list-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 5px 10px 6px;
  margin-bottom: 3px;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.cap-dot {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  display: inline-block;
}

.cap-dot-fact   { background: var(--sky); }
.cap-dot-report { background: var(--violet); }
.cap-dot-cite   { background: var(--positive); }

.cap-na {
  width: 8px;
  height: 2px;
  background: #CBD5E1;
  border-radius: 1px;
  display: inline-block;
  flex-shrink: 0;
}

.cap-no {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  border: 1.5px dashed #CBD5E1;
  background: rgba(10, 15, 40, 0.035);
  display: inline-block;
  flex-shrink: 0;
}

.cap-section {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.cap-section-objective { flex: 3; }
.cap-section-open-group { flex: 1; }

.cap-section + .cap-section {
  margin-top: 6px;
  padding-top: 6px;
  border-top: 1px solid var(--line);
}

.cap-section-header {
  margin-bottom: 4px;
}

.cap-section-badge {
  display: inline-block;
  padding: 1px 8px;
  border-radius: 999px;
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.cap-section-obj {
  background: var(--sky-soft);
  color: #1E3A8A;
  border: 1px solid var(--sky-line);
}

.cap-section-open {
  background: var(--violet-soft);
  color: #4C1D95;
  border: 1px solid var(--violet-line);
}

.cap-rows {
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: 3px;
}

.cap-row {
  display: flex;
  flex: 1;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  min-height: 30px;
  padding: 3px 10px;
  border-radius: 8px;
  background: var(--paper);
  border: 1px solid transparent;
  transition: border-color 120ms ease, background 120ms ease;
}

.cap-row:hover {
  border-color: var(--line);
  background: #fff;
}

.cap-name {
  min-width: 0;
  color: var(--text);
  font-size: 0.82rem;
  font-weight: 700;
  line-height: 1.2;
}

/* ── Leaderboard table ─────────────────────────────────────── */
.leaderboard-block .table-label {
  padding: 20px 16px 16px;
  font-size: 1.1rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: none;
  text-align: center;
  margin-bottom: 0;
}

.leaderboard-block {
  padding: 0;
  overflow: hidden;
  margin-top: 28px;
}

.leaderboard-note {
  margin: 0;
  padding: 10px 16px 12px;
  font-size: 0.74rem;
  color: var(--muted);
  line-height: 1.4;
  border-top: 1px solid var(--line);
}

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

.leaderboard-table {
  border-radius: 0;
}

.leaderboard-table th,
.leaderboard-table td {
  padding: 13px 11px;
  text-align: center;
  font-size: 0.96rem;
}

/* data cells — numbers should never wrap */
.leaderboard-table tbody td:not(.col-model) {
  white-space: nowrap;
}

.leaderboard-table .col-model {
  text-align: left;
  position: sticky;
  left: 0;
  z-index: 1;
  min-width: 170px;
  max-width: 200px;
  white-space: normal;
  word-break: break-word;
  font-size: 0.96rem;
  color: var(--text);
}

.leaderboard-table thead .col-model {
  background: rgba(10, 15, 40, 0.03);
}

.leaderboard-table tbody tr:hover td {
  background: rgba(10, 15, 40, 0.025);
}

.leaderboard-table tbody .col-model {
  background: var(--paper);
}

.leaderboard-table tbody tr:hover .col-model {
  background: rgba(10, 15, 40, 0.025);
}

.leaderboard-table .bench-row th:not(.col-model) {
  font-size: 0.84rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding-bottom: 2px;
  border-bottom: none;
  min-width: 76px;     /* prevents collapse when text wraps */
  white-space: normal; /* let benchmark names wrap */
}

.leaderboard-table .metric-row th {
  font-size: 0.76rem !important;
  font-weight: 500 !important;
  text-transform: none !important;
  letter-spacing: 0 !important;
  color: var(--muted) !important;
  padding-top: 2px;
  padding-bottom: 12px;
  border-top: none !important;
}

.leaderboard-table .lb-group td {
  background: rgba(10, 15, 40, 0.04);
  color: var(--text);
  font-weight: 800;
  font-size: 0.88rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-align: center;
  padding: 10px 18px;
}

.leaderboard-table .lb-group-quest td {
  background: rgba(190, 91, 43, 0.08);
  color: var(--accent);
}

.leaderboard-table .lb-quest-row td {
  background: rgba(190, 91, 43, 0.03);
  color: var(--text);
}

.leaderboard-table .lb-quest-row .col-model {
  background: rgba(190, 91, 43, 0.03);
}

.leaderboard-table tbody tr.lb-quest-row:hover td,
.leaderboard-table tbody tr.lb-quest-row:hover .col-model {
  background: rgba(190, 91, 43, 0.07);
}

.leaderboard-table td.cell-na {
  color: #b0bac8;
  font-size: 1em;
  letter-spacing: 0.05em;
}

.leaderboard-table td.cell-x {
  color: #c44;
  font-size: 0.9em;
}

.leaderboard-table td {
  font-variant-numeric: tabular-nums;
  color: var(--muted);
}

sup.val-note {
  font-size: 0.68em;
  color: var(--accent);
  font-weight: 700;
  vertical-align: super;
}

sup.val-dagger {
  font-size: 0.68em;
  color: var(--mint);
  font-weight: 700;
  vertical-align: super;
}

.val-slash {
  color: var(--line-strong);
  margin: 0 1px;
  font-weight: 400;
}

/* ── End leaderboard ───────────────────────────────────────── */

/* ── Comparison table ──────────────────────────────────────── */
.comparison-block {
  padding: 0;
  overflow: hidden;
}

.comparison-block .table-label {
  margin-bottom: 0;
  padding: 20px 16px 16px;
  color: var(--text);
  font-size: 1.1rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-align: center;
  text-transform: none;
}

.comparison-table {
  min-width: 1040px;
  border-radius: 0;
  border-collapse: separate;
  border-spacing: 0;
}

.comparison-table th,
.comparison-table td {
  padding: 13px 10px;
  border-top: 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.82rem;
  vertical-align: middle;
  text-align: center;
}

.comparison-table thead th {
  background: var(--paper);
}

.comparison-group-row th {
  padding-top: 12px;
  padding-bottom: 8px;
  color: var(--muted);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-align: center;
  text-transform: uppercase;
  border-bottom: 1px solid var(--line-strong);
}

.comparison-group-row th.th-spanned {
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  vertical-align: middle;
  border-bottom: 1px solid var(--line);
  padding-top: 10px;
  padding-bottom: 12px;
  color: var(--muted);
}

.comparison-group-row th:first-child {
  text-align: left;
}

.comparison-column-row th {
  padding-top: 10px;
  padding-bottom: 12px;
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-bottom: 1px solid var(--line);
}

.comparison-column-row th:first-child {
  text-align: left;
}

.comparison-divider-left {
  border-left: 1px solid var(--line);
}

.comparison-table tbody tr {
  transition: background 140ms ease;
}

.comparison-table tbody tr:hover td {
  background: rgba(10, 15, 40, 0.025);
}

.comparison-model-head,
.comparison-group-row th:first-child,
.comparison-model-cell {
  position: sticky;
  left: 0;
  z-index: 1;
  background: var(--paper);
}

.comparison-group-row th:first-child,
.comparison-model-head {
  z-index: 3;
}

.comparison-model-cell {
  min-width: 172px;
  padding-left: 16px !important;
  text-align: left !important;
}

.comparison-table tbody tr:hover .comparison-model-cell {
  background: rgba(10, 15, 40, 0.025);
}

.comparison-model-label {
  display: block;
  color: var(--text);
  font-size: 0.92rem;
  font-weight: 700;
  line-height: 1.2;
}

.comparison-model-org {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  font-size: 0.66rem;
  letter-spacing: 0.02em;
}

.comparison-quest-row td {
  background: var(--quest-row);
}

.comparison-quest-row .comparison-model-cell {
  background: var(--quest-row);
  box-shadow: inset 3px 0 0 var(--mint-deep);
}

.comparison-quest-row .comparison-model-label,
.comparison-quest-row .comparison-model-org {
  color: var(--mint-deep);
}

.comparison-table tbody tr.comparison-quest-row:hover td,
.comparison-table tbody tr.comparison-quest-row:hover .comparison-model-cell {
  background: rgba(11, 158, 138, 0.12);
}

.comparison-center {
  text-align: center;
}

.scenario-stack,
.backend-stack {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
}

.scenario-pill,
.backend-pill,
.pipeline-pill,
.release-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  width: fit-content;
  white-space: nowrap;
  border-radius: 999px;
  border: 1px solid transparent;
}

.scenario-pill {
  padding: 4px 10px;
  font-size: 0.68rem;
  font-weight: 700;
}

.scenario-dot {
  width: 6px;
  height: 6px;
  border-radius: 999px;
  flex-shrink: 0;
}

.scenario-fact {
  background: var(--sky-soft);
  color: #1E3A8A;
  border-color: var(--sky-line);
}

.scenario-fact .scenario-dot {
  background: var(--sky);
}

.scenario-citation {
  background: var(--positive-soft);
  color: #14532D;
  border-color: var(--positive-line);
}

.scenario-citation .scenario-dot {
  background: var(--positive);
}

.scenario-report {
  background: var(--violet-soft);
  color: #4C1D95;
  border-color: var(--violet-line);
}

.scenario-report .scenario-dot {
  background: var(--violet);
}

.support-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 0.92rem;
  font-weight: 800;
  line-height: 1;
}

.support-yes {
  color: var(--positive);
  background: var(--positive-soft);
  border-color: var(--positive-line);
}

.support-no {
  color: var(--negative);
  background: var(--negative-soft);
  border-color: var(--negative-line);
}

.support-na {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 32px;
  height: 24px;
  padding: 0 7px;
  border-radius: 999px;
  border: 1px solid #CBD5E1;
  background: #F1F5F9;
  color: #64748B;
  font-size: 0.66rem;
  font-weight: 800;
  line-height: 1;
}

.backend-pill,
.pipeline-pill,
.release-pill {
  padding: 2px 7px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.backend-none {
  color: #334155;
  background: #E2E8F0;
  border-color: #CBD5E1;
}

.backend-local {
  color: #78350F;
  background: #FEF3C7;
  border-color: #FCD34D;
}

.backend-cache {
  color: #14532D;
  background: var(--positive-soft);
  border-color: var(--positive-line);
}

.backend-api {
  color: #4C1D95;
  background: var(--violet-soft);
  border-color: var(--violet-line);
}

.pipeline-track {
  display: flex;
  align-items: center;
  gap: 3px;
  flex-wrap: nowrap;
  justify-content: center;
  white-space: nowrap;
}

.pipeline-mt {
  color: #78350F;
  background: #FEF3C7;
  border-color: #FCD34D;
}

.pipeline-sft {
  color: #1E3A8A;
  background: var(--sky-soft);
  border-color: var(--sky-line);
}

.pipeline-rl {
  color: #7F1D1D;
  background: var(--negative-soft);
  border-color: var(--negative-line);
}

.pipeline-arrow-inline {
  color: #94A3B8;
  font-size: 0.76rem;
  font-weight: 700;
}

.release-code {
  color: #14532D;
  background: var(--positive-soft);
  border-color: var(--positive-line);
}

.release-blog {
  color: #334155;
  background: #E2E8F0;
  border-color: #CBD5E1;
}


.comparison-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 20px;
  align-items: center;
  padding: 14px 16px 18px;
  border-top: 1px solid var(--line);
  background: rgba(10, 15, 40, 0.03);
}

.comparison-legend-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  font-size: 0.72rem;
}

.comparison-legend .support-mark {
  width: auto;
  height: auto;
  font-size: 0.9rem;
}
/* ── End comparison table ─────────────────────────────────── */

.equation-block {
  margin: 18px 0;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: linear-gradient(180deg, rgba(10, 15, 40, 0.025), rgba(10, 15, 40, 0.015));
  overflow-x: auto;
}

.equation-block mjx-container {
  margin: 0 !important;
  min-width: max-content;
  overflow: visible;
}

.equation-block mjx-container[jax="SVG"] {
  display: block;
  text-align: center;
}

.body-copy mjx-container {
  color: var(--text);
}

.ordered-blocks {
  margin: 0;
  padding-left: 22px;
  display: grid;
  gap: 18px;
}

.ordered-blocks li {
  padding-top: 2px;
}

.ordered-blocks h3 {
  margin: 0 0 8px;
  font-family: "Source Serif 4", serif;
  font-size: 1.24rem;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.ordered-blocks p {
  margin: 0 0 14px;
  color: var(--muted);
  line-height: 1.75;
}

.ordered-blocks.compact {
  gap: 12px;
}

.ordered-blocks.compact li {
  color: var(--muted);
  line-height: 1.75;
}

.closing-note {
  margin-top: 24px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.contribution-block {
  padding: 20px 22px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface-alt);
}

.contribution-list {
  display: grid;
  gap: 0;
  margin: 0;
}

.contribution-list div {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  gap: 18px;
  padding: 14px 0;
  border-top: 1px solid var(--line);
}

.contribution-list div:first-child {
  padding-top: 0;
  border-top: 0;
}

.contribution-list div:last-child {
  padding-bottom: 0;
}

.contribution-list dt {
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.contribution-list dd {
  margin: 0;
  color: var(--text);
  font-size: 1rem;
  line-height: 1.65;
}

/* ─── Tech Block ─────────────────────────────────────── */
.tech-block {
  display: grid;
  grid-template-columns: 1.1fr 0.95fr;
  gap: 20px;
  margin-top: 24px;
}

.tech-block + .tech-block {
  margin-top: 32px;
  padding-top: 32px;
  border-top: 1px solid var(--line);
}

.diagram-card {
  padding: 18px;
  border-radius: 14px;
  background: var(--surface-alt);
}

.pipeline {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  gap: 8px;
  align-items: center;
  height: 100%;
}

.pipeline-node,
.verify-item,
.verify-stat {
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--paper);
}

.pipeline-node span,
.verify-item span {
  display: block;
  color: var(--accent);
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.pipeline-node strong,
.verify-item strong,
.verify-stat strong {
  display: block;
  margin: 5px 0 7px;
  font-size: 0.96rem;
  letter-spacing: -0.01em;
}

.pipeline-node p,
.verify-item p,
.verify-stat p {
  margin: 0;
  color: var(--muted);
  font-size: 0.86rem;
  line-height: 1.55;
}

.pipeline-arrow {
  color: var(--accent);
  font-size: 1.3rem;
  font-weight: 700;
}

.verify-grid { display: grid; gap: 10px; }

.verify-stat {
  background: linear-gradient(135deg, rgba(11, 158, 138, 0.07), rgba(190, 91, 43, 0.05));
}

.showcase-tag,
.detail-grid dt {
  color: var(--accent);
}

/* ─── Showcase ───────────────────────────────────────── */
.showcase-list { display: grid; gap: 0; }

.showcase-card {
  padding: 24px 0 0;
  border: 0;
  border-radius: 0;
  background: transparent;
}

.showcase-card + .showcase-card {
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.showcase-top {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  margin-bottom: 16px;
}

.showcase-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 800;
  font-size: 0.85rem;
  flex-shrink: 0;
}

.showcase-card h3 {
  margin: 0;
  font-size: 1.4rem;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.showcase-tag {
  display: block;
  margin: 5px 0 0;
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.detail-grid { display: grid; gap: 0; margin: 0; }

.detail-grid div {
  display: grid;
  grid-template-columns: 148px minmax(0, 1fr);
  gap: 14px;
  padding: 11px 0;
  border-top: 1px solid var(--line);
}

.detail-grid dt {
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  padding-top: 2px;
}

.detail-grid dd {
  margin: 0;
  font-size: 0.91rem;
  line-height: 1.6;
}

/* ─── Vision ─────────────────────────────────────────── */
.vision {
  background: linear-gradient(135deg,
    rgba(11, 158, 138, 0.06),
    rgba(190, 91, 43, 0.04)),
    var(--paper);
}

.vision-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr;
  gap: 20px;
  align-items: center;
}

.vision-links { display: flex; flex-wrap: wrap; gap: 10px; }

.vision-links a {
  display: inline-flex;
  align-items: center;
  padding: 9px 18px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  font-size: 0.86rem;
  font-weight: 600;
  background: var(--paper);
  transition: background 140ms ease, border-color 140ms ease, color 140ms ease;
}

.vision-links a:hover {
  background: var(--accent-soft);
  border-color: var(--accent-light);
  color: var(--accent);
}

/* ─── Recent Posts ───────────────────────────────────── */
.recent-list { display: grid; gap: 0; }

.recent-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 14px 0;
  border-top: 1px solid var(--line);
  transition: color 140ms ease;
}

.recent-item:hover { color: var(--accent); }

.recent-item strong {
  font-size: 1.02rem;
  line-height: 1.38;
}

/* ─── Footer ─────────────────────────────────────────── */
.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  margin-top: 18px;
  padding: 16px 8px 24px;
  border-top: 1px solid var(--line);
  background: transparent;
  box-shadow: none;
}

.site-footer p {
  margin: 0;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1;
  text-transform: uppercase;
}

.footer-links { display: flex; flex-wrap: wrap; gap: 16px; flex-shrink: 0; }

.footer-links a {
  font-size: 0.92rem;
  color: var(--muted);
  transition: color 140ms ease;
}

.footer-links a:hover { color: var(--text); }

/* ─── Back to Top ────────────────────────────────────── */
.back-to-top {
  position: fixed;
  right: 28px;
  bottom: 32px;
  z-index: 200;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 16px 9px 13px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 2px 12px rgba(10, 15, 40, 0.12);
  color: var(--text);
  font-family: "Manrope", sans-serif;
  font-size: 0.84rem;
  font-weight: 700;
  cursor: pointer;
  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
  transition: opacity 200ms ease, transform 200ms ease, background 140ms ease, color 140ms ease;
}

.back-to-top.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.back-to-top:hover {
  background: var(--text);
  color: #fff;
  border-color: var(--text);
}

/* ─── Responsive: 1300px — collapse TOC sidebar ──────── */
@media (max-width: 1700px) {
  .site-shell {
    width: min(calc(100vw - 32px), var(--content-width));
  }

  .article-head h1 {
    font-size: 2.3rem;
  }

  .benchmark-comparison-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .benchmark-comparison-chart {
    height: 210px;
  }
}

@media (max-width: 1500px) {
  .article-shell {
    grid-template-columns: 168px minmax(0, 1fr);
    gap: 20px;
  }

  .benchmark-bar-row {
    grid-template-columns: 112px minmax(0, 1fr) 32px;
  }
}

@media (max-width: 1300px) {
  .article-shell {
    display: block;
  }

  .article-head h1 {
    font-size: 2.15rem;
  }

  .toc-sidebar {
    display: none;
  }

  .small-model-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .benchmark-comparison-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .benchmark-panel-head {
    align-items: flex-start;
    flex-direction: column;
    gap: 4px;
  }

  .benchmark-panel-head strong {
    text-align: left;
  }

  .comparison-inline .comparison-table {
    min-width: 1040px;
  }
}

/* ─── Responsive: 980px ──────────────────────────────── */
@media (max-width: 980px) {
  .site-header,
  .site-footer { flex-direction: column; align-items: center; }

  .article-head h1 {
    font-size: 2rem;
  }

  .article-head .title-line {
    white-space: normal;
  }

  .benchmark-board,
  .essay-grid,
  .tech-block,
  .vision-grid,
  .evaluation-overview-grid { grid-template-columns: 1fr; }

  .small-model-grid,
  .benchmark-comparison-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }

  .benchmark-comparison-chart {
    height: 220px;
  }

  .comparison-inline .table-scroll {
    overflow-x: auto;
  }

  .comparison-inline .comparison-table {
    min-width: 980px;
  }

  .pipeline { grid-template-columns: 1fr; }

  .pipeline-arrow {
    justify-self: center;
    transform: rotate(90deg);
  }

  .section { padding: 40px 20px; }
  .article-head { padding: 28px 20px 32px; }
  .lede { padding: 24px 20px 14px; }
  .top-benchmark-showcase { padding: 22px 20px 34px; }
  .article > .comparison-figure { padding: 28px 20px 40px; }
}

/* ─── Responsive: 760px ──────────────────────────────── */
@media (max-width: 760px) {
  :root { --content-width: 100vw; }
  .site-shell {
    width: calc(100vw - 32px);
    padding-top: 12px;
  }
  mjx-container {
    max-width: 100%;
    overflow-x: auto;
    display: block !important;
  }

  .site-header,
  .site-footer { padding-left: 16px; padding-right: 16px; }

  .site-header { padding-top: 12px; padding-bottom: 12px; }

  .article-head { padding: 20px 22px 24px; }
  .author-row {
    gap: 3px 10px;
    font-size: 0.92rem;
  }
  .affiliation-row {
    gap: 4px 14px;
    font-size: 0.86rem;
  }
  .resource-links { gap: 8px; }
  .resource-link {
    width: auto;
    min-width: 0;
    padding: 10px 16px;
  }
  .article-meta-row {
    justify-content: center;
    flex-direction: column;
    gap: 4px;
    margin-bottom: 20px;
  }
  .lede { padding: 18px 22px 12px; }
  .top-benchmark-showcase { padding: 18px 22px 26px; }
  .section { padding: 28px 22px; }
  .article > .comparison-figure { padding: 22px 22px 30px; }

  .benchmark-board { padding: 8px; border-radius: 14px; gap: 8px; }
  .benchmark-comparison-panel { padding: 10px; border-radius: 14px; }
  .small-model-grid,
  .benchmark-comparison-grid { grid-template-columns: 1fr; gap: 10px; }
  .benchmark-comparison-chart { height: 210px; }
  .benchmark-bar-row { grid-template-columns: 88px minmax(0, 1fr) 28px; }
  .mini-chart { gap: 5px; min-height: 170px; }
  .mini-bar span { font-size: 0.56rem; }

  .comparison-inline .comparison-table {
    min-width: 900px;
  }

  .showcase-card h3 { font-size: 1.18rem; }

  .detail-grid div { grid-template-columns: 1fr; gap: 3px; }
  .contribution-list div { grid-template-columns: 1fr; gap: 4px; }

  .content-table:not(.leaderboard-table):not(.comparison-table),
  .content-table:not(.leaderboard-table):not(.comparison-table) thead,
  .content-table:not(.leaderboard-table):not(.comparison-table) tbody,
  .content-table:not(.leaderboard-table):not(.comparison-table) tr,
  .content-table:not(.leaderboard-table):not(.comparison-table) th,
  .content-table:not(.leaderboard-table):not(.comparison-table) td {
    display: block;
    width: 100%;
  }

  .content-table:not(.leaderboard-table):not(.comparison-table) thead {
    display: none;
  }

  .content-table:not(.leaderboard-table):not(.comparison-table) td {
    padding: 10px 12px;
  }

  .table-block:not(.leaderboard-block):not(.comparison-block) {
    padding: 12px;
  }

  .equation-block {
    padding: 14px;
  }

  .recent-item { flex-direction: column; align-items: flex-start; }

  .site-footer { flex-direction: column; }
  .footer-links { gap: 12px; }
}

/* ── Quest demo chat ───────────────────────────────────────── */
.quest-chat {
  margin-top: 18px;
  border: 1px solid rgba(10, 15, 40, 0.08);
  border-radius: 12px;
  background: #FFFFFF;
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  box-shadow: 0 1px 2px rgba(10, 15, 40, 0.04);
}
.quest-chat-stream {
  min-height: 160px;
  max-height: 480px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 4px;
}
.quest-chat-stream:empty {
  display: none;
}
.quest-chat-stream:empty::before {
  content: 'Your conversation will appear here.';
  color: #94A3B8;
  font-size: 13px;
  margin: auto;
  font-style: italic;
}
.qc-msg { display: flex; }
.qc-msg-user { justify-content: flex-end; }
.qc-msg-assistant { justify-content: flex-start; }
.qc-bubble {
  max-width: 85%;
  padding: 10px 14px;
  border-radius: 12px;
  font-size: 14px;
  line-height: 1.55;
  word-wrap: break-word;
  overflow-wrap: anywhere;
}
.qc-msg-user .qc-bubble {
  background: #1D4ED8;
  color: #FFFFFF;
  border-bottom-right-radius: 4px;
}
.qc-msg-assistant .qc-bubble {
  background: #F1F5F9;
  color: #0F172A;
  border-bottom-left-radius: 4px;
}
.qc-bubble p:first-child { margin-top: 0; }
.qc-bubble p:last-child  { margin-bottom: 0; }
.qc-bubble pre {
  background: rgba(10, 15, 40, 0.06);
  padding: 8px 10px;
  border-radius: 6px;
  overflow-x: auto;
  font-size: 12.5px;
}
.qc-bubble code {
  font-size: 12.5px;
  background: rgba(10, 15, 40, 0.06);
  padding: 1px 5px;
  border-radius: 4px;
}
.qc-bubble pre code { background: transparent; padding: 0; }
.qc-thinking { color: #64748B; font-style: italic; }
.qc-error    { color: #B91C1C; }
.quest-chat-input {
  display: flex;
  gap: 10px;
  align-items: flex-end;
}
.quest-chat-input textarea {
  flex: 1;
  resize: vertical;
  min-height: 56px;
  padding: 11px 13px;
  border: 1px solid rgba(10, 15, 40, 0.12);
  border-radius: 10px;
  font: inherit;
  font-size: 14px;
  line-height: 1.5;
  background: #FAFBFC;
}
.quest-chat-input textarea:focus {
  outline: 2px solid #93C5FD;
  outline-offset: 0;
  border-color: #60A5FA;
  background: #FFFFFF;
}
.quest-chat-input button {
  min-height: 48px;
  padding: 10px 18px;
  background: #1D4ED8;
  color: #FFFFFF;
  border: 0;
  border-radius: 10px;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s ease;
}
.quest-chat-input button:hover:not(:disabled) { background: #1E40AF; }
.quest-chat-input button:disabled {
  background: #94A3B8;
  cursor: not-allowed;
}
.quest-chat-status {
  margin: 0;
  font-size: 12.5px;
  color: #64748B;
  min-height: 0;
}
.quest-chat-advanced {
  font-size: 13px;
}
.quest-chat-advanced summary {
  cursor: pointer;
  color: #475569;
  font-weight: 600;
  padding: 4px 0;
  user-select: none;
  list-style: none;
}
.quest-chat-advanced summary::before {
  content: '▸ ';
  display: inline-block;
  transition: transform 0.15s ease;
  color: #94A3B8;
}
.quest-chat-advanced[open] summary::before {
  content: '▾ ';
}
.quest-chat-controls {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 10px;
  margin-top: 8px;
}
.quest-chat-controls label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 12px;
  color: #64748B;
  font-weight: 600;
}
.quest-chat-controls input,
.quest-chat-controls select {
  padding: 6px 10px;
  border: 1px solid rgba(10, 15, 40, 0.12);
  border-radius: 8px;
  font: inherit;
  font-size: 13px;
  background: #FAFBFC;
  color: #0F172A;
  font-weight: 400;
  height: 32px;
  appearance: none;
  -webkit-appearance: none;
}
.quest-chat-controls select {
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'><path fill='none' stroke='%2364748B' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round' d='M1 1.5l5 5 5-5'/></svg>");
  background-repeat: no-repeat;
  background-position: right 10px center;
  padding-right: 28px;
}
.quest-chat-controls input:focus,
.quest-chat-controls select:focus {
  outline: 2px solid #93C5FD;
  outline-offset: 0;
  border-color: #60A5FA;
  background-color: #FFFFFF;
}

@media (max-width: 760px) {
  .quest-chat-input {
    flex-direction: column;
    align-items: stretch;
  }
  .quest-chat-input button {
    width: 100%;
  }
}