:root {
  --bg: #ffffff;
  --text: #142033;
  --muted: #546477;
  --line: #dce3ea;
  --panel: #f7f9fb;
  --blue: #205b94;
  --green: #146e58;
  --max-width: 1152px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
}
* { box-sizing: border-box; }
html { color: var(--text); background: var(--bg); font-family: var(--font-sans); font-size: 16px; line-height: 1.62; text-rendering: optimizeLegibility; -webkit-font-smoothing: antialiased; scroll-behavior: smooth; }
body { margin: 0; }
a { color: inherit; text-underline-offset: .2em; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
a:focus-visible, .skip-link:focus-visible { outline: 3px solid var(--blue); outline-offset: 4px; }
img { max-width: 100%; }
.shell { width: min(calc(100% - 64px), var(--max-width)); margin-inline: auto; }
.skip-link { position: fixed; top: 12px; left: 12px; z-index: 100; padding: 9px 14px; background: var(--text); color: #fff; transform: translateY(-180%); }
.skip-link:focus { transform: translateY(0); }
.site-header { border-top: 5px solid var(--text); border-bottom: 1px solid var(--line); }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 32px; min-height: 82px; }
.brand { display: inline-flex; flex-shrink: 0; text-decoration: none; }
.brand-logo { display: block; width: 148px; height: auto; }
.site-nav { display: flex; align-items: center; justify-content: flex-end; flex-wrap: wrap; gap: 11px 24px; font-size: .9rem; }
.site-nav a { text-decoration: none; color: var(--muted); }
.site-nav a:hover, .site-nav a:focus-visible { color: var(--text); text-decoration: underline; }
.site-nav .nav-repository { font-weight: 700; color: var(--text); }
.hero { padding-top: clamp(72px, 9vw, 122px); padding-bottom: clamp(70px, 9vw, 110px); }
.hero-main { max-width: 920px; }
.eyebrow, .section-label, .comparison-label, .metric-label, .evidence-meta { font-family: var(--font-mono); }
.eyebrow { color: var(--muted); margin: 0 0 22px; font-size: .75rem; letter-spacing: .075em; }
h1, h2, h3, p { overflow-wrap: break-word; }
h1 { margin: 0; max-width: 950px; font-weight: 735; font-size: clamp(2.7rem, 5.7vw, 5.05rem); letter-spacing: -.055em; line-height: 1.045; }
h2 { margin: 0 0 24px; font-size: clamp(1.6rem, 2.65vw, 2.45rem); letter-spacing: -.038em; line-height: 1.17; font-weight: 700; }
h3 { margin: 0 0 7px; font-size: 1.24rem; letter-spacing: -.02em; line-height: 1.3; }
p { margin: 0 0 17px; }
.hero-lead { margin: 30px 0 0; max-width: 810px; font-size: clamp(1.07rem, 1.9vw, 1.3rem); line-height: 1.58; }
.hero-actions { margin-top: 30px; display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.action-link { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 43px; padding: 9px 16px; border: 1px solid var(--text); background: var(--text); color: #fff; font-size: .92rem; font-weight: 600; text-decoration: none; }
.action-link:hover { text-decoration: underline; }
.action-link--muted { background: #fff; color: var(--text); border-color: #c7d0da; }
.command-block { display: flex; align-items: center; gap: 14px; width: fit-content; max-width: 100%; min-height: 52px; margin-top: 22px; padding: 13px 17px; border: 1px solid var(--line); background: var(--panel); overflow-x: auto; white-space: nowrap; font-family: var(--font-mono); font-size: .89rem; }
.command-block code { font: inherit; }
.command-prompt { user-select: none; color: var(--muted); }
.command-block--compact { margin: 25px 0 17px; }
.section { display: grid; grid-template-columns: minmax(125px, 198px) minmax(0, 1fr); gap: clamp(30px, 5vw, 72px); border-top: 1px solid var(--line); padding-block: clamp(58px, 7vw, 92px); }
.section-label { padding-top: 9px; color: var(--muted); font-size: .74rem; letter-spacing: .025em; }
.section-body { min-width: 0; max-width: 860px; }
.section-intro { font-size: 1.09rem; line-height: 1.65; }
.note { margin-top: 18px; color: var(--muted); font-size: .9rem; line-height: 1.6; }
.inline-link { font-weight: 650; color: var(--blue); display: inline-block; margin-top: 8px; }
.inline-link:hover { color: var(--text); }
.fact-list { margin: 27px 0 20px; border-top: 1px solid var(--line); }
.fact-list > div { padding: 16px 0; border-bottom: 1px solid var(--line); display: grid; grid-template-columns: 170px minmax(0, 1fr); gap: 24px; }
.fact-list dt { font-size: .87rem; font-weight: 650; }
.fact-list dd { margin: 0; color: var(--muted); }
.comparison { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; margin: 26px 0 18px; }
.comparison-item { padding: 22px; border: 1px solid #bfd0e2; background: #f6faff; }
.comparison-item--candidate { border-color: #abd1c6; background: #f4fbf7; }
.comparison-label { margin-bottom: 12px; font-size: .76rem; letter-spacing: .02em; color: var(--blue); }
.comparison-item--candidate .comparison-label { color: var(--green); }
.comparison-label code { font: inherit; }
.comparison-item p:last-child { color: var(--muted); font-size: .92rem; margin-bottom: 0; }
.section-heading { display: flex; align-items: flex-start; justify-content: space-between; flex-wrap: wrap; gap: 16px 26px; margin-bottom: 22px; }
.section-heading h2 { margin-bottom: 10px; }
.evidence-meta { font-size: .73rem; color: var(--muted); margin: 0; }
.dataset-link { display: flex; flex-direction: column; gap: 3px; flex-shrink: 0; padding: 10px 14px; background: var(--panel); border: 1px solid var(--line); text-decoration: none; font-weight: 650; line-height: 1.4; font-size: .84rem; }
.dataset-id { font-family: var(--font-mono); font-weight: 400; font-size: .72rem; color: var(--muted); }
.dataset-link:hover { border-color: var(--blue); }
.metrics { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin-top: 29px; }
.metric { display: flex; flex-direction: column; min-height: 166px; padding: 22px 24px; border: 1px solid var(--line); background: var(--panel); color: var(--text); text-decoration: none; }
.metric:hover { border-color: #9cb3c9; }
.metric--primary { border-color: #b0d2c6; background: #f3faf6; }
.metric--primary:hover { border-color: var(--green); }
.metric-label { font-size: .74rem; color: var(--muted); }
.metric-value { font-size: clamp(2rem, 4vw, 3.05rem); letter-spacing: -.055em; line-height: 1.19; font-weight: 720; margin-top: 13px; }
.metric-value span { font-size: .62em; letter-spacing: -.03em; }
.metric--primary .metric-value { color: var(--green); }
.metric-detail { color: var(--muted); font-size: .83rem; margin-top: auto; padding-top: 12px; }
.scope-note { margin-top: 20px; }
.topology { margin: 28px 0 18px; }
.topology a { display: block; }
.topology img { width: 100%; display: block; height: auto; border: 1px solid var(--line); background: #f5f8fc; }
figcaption { margin-top: 12px; font-size: .82rem; line-height: 1.55; color: var(--muted); }
.resource-links { display: flex; flex-wrap: wrap; column-gap: 24px; row-gap: 8px; margin-top: 19px; }
.site-footer { border-top: 1px solid var(--line); }
.footer-inner { display: flex; flex-wrap: wrap; align-items: center; gap: 9px 24px; padding-block: 26px 34px; font-size: .81rem; }
.footer-inner a { color: var(--muted); }
.footer-name { font-weight: 750; margin-right: 10px; }
@media (max-width: 900px) {
  .site-nav { gap: 8px 14px; }
  .section { grid-template-columns: minmax(110px, 145px) minmax(0, 1fr); gap: 32px; }
  .section-heading { display: block; }
  .dataset-link { width: fit-content; margin-top: 12px; }
}
@media (max-width: 700px) {
  .shell { width: min(calc(100% - 36px), var(--max-width)); }
  .header-inner { min-height: 72px; flex-wrap: wrap; padding-block: 15px; gap: 12px; }
  .brand-logo { width: 128px; }
  .site-nav { justify-content: flex-start; }
  .site-nav a { font-size: .82rem; }
  .site-nav a:nth-child(1), .site-nav a:nth-child(2) { display: none; }
  .hero { padding-block: 62px 70px; }
  h1 { font-size: clamp(2.5rem, 10vw, 3.6rem); }
  .hero-lead { margin-top: 23px; font-size: 1.05rem; }
  .section { display: block; padding-block: 52px; }
  .section-label { margin-bottom: 19px; padding-top: 0; }
  .fact-list > div { grid-template-columns: 1fr; gap: 4px; }
  .comparison { grid-template-columns: 1fr; }
  .resource-links { display: block; }
  .resource-links .inline-link { display: block; width: fit-content; }
}
@media (max-width: 480px) {
  .metrics { grid-template-columns: 1fr; }
  .metric { min-height: 143px; }
  .command-block { font-size: .77rem; padding: 12px; }
  .hero-actions { align-items: stretch; }
  .action-link { width: 100%; }
  .footer-inner { gap: 10px 16px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
@media print { .site-header, .site-footer, .hero-actions, .command-block { display: none; } .section { break-inside: avoid; } a { text-decoration: none; } }