:root {
  color-scheme: light;
  --ink: #172b3f;
  --muted: #526477;
  --line: #d8e2eb;
  --paper: #ffffff;
  --page: #f3f7fa;
  --navy: #102c46;
  --blue: #176b9c;
  --teal: #007f78;
  --warm: #fff3dc;
  --warm-line: #e8bd65;
  --content-wide: 1140px;
  --content-read: 900px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}

a { color: #075f93; text-decoration-thickness: 1px; text-underline-offset: .18em; }
a:hover { color: #073e62; }
a:focus-visible, summary:focus-visible {
  outline: 3px solid #f0a927;
  outline-offset: 3px;
  border-radius: 3px;
}

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

.skip-link {
  position: absolute;
  left: 1rem;
  top: -5rem;
  z-index: 10;
  padding: .6rem .9rem;
  color: #fff;
  background: var(--navy);
  border-radius: .35rem;
}
.skip-link:focus { top: .75rem; }

.site-header {
  background: var(--navy);
  color: #fff;
}
.site-header__inner,
.site-footer__inner {
  width: min(calc(100% - 2rem), var(--content-wide));
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.site-header__inner { min-height: 64px; }
.site-brand {
  color: #fff;
  font-size: 1.18rem;
  font-weight: 750;
  letter-spacing: .01em;
  text-decoration: none;
}
.site-nav { display: flex; flex-wrap: wrap; gap: .35rem 1.2rem; }
.site-nav a { color: #e1eff8; font-size: .93rem; text-decoration: none; }
.site-nav a:hover { color: #fff; text-decoration: underline; }
.site-nav .language-switch { padding-inline: .55rem; border: 1px solid #708fa5; border-radius: .3rem; }

.home-page {
  width: min(calc(100% - 2rem), var(--content-wide));
  margin: 0 auto;
  padding: 1.2rem 0 4rem;
}
.document-page {
  width: min(calc(100% - 2rem), var(--content-read));
  margin: 2.25rem auto 4rem;
  padding: clamp(1.25rem, 4vw, 3rem);
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: .7rem;
  box-shadow: 0 5px 24px rgb(16 44 70 / 5%);
  overflow-wrap: anywhere;
}

.home-page h1, .document-page h1,
.home-page h2, .document-page h2,
.home-page h3, .document-page h3 { color: var(--navy); line-height: 1.22; }
.home-page h1 { max-width: 860px; margin: .2rem 0 1rem; font-size: clamp(2.25rem, 5vw, 3.6rem); letter-spacing: -.04em; }
.home-page h2 { margin: 3.2rem 0 .8rem; font-size: clamp(1.55rem, 3vw, 2.1rem); letter-spacing: -.025em; }
.home-page h3 { margin: 0 0 .45rem; font-size: 1.08rem; }
.document-page h1 { margin-top: 0; font-size: clamp(1.9rem, 4vw, 2.65rem); }
.document-page h2 { margin-top: 2.2rem; font-size: 1.55rem; }
.document-page h3 { font-size: 1.15rem; }
.home-page p { margin: .6rem 0 1rem; }
.document-page p { max-width: 75ch; }

.page-jumps {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem 1.25rem;
  padding: .75rem 0 1rem;
  border-bottom: 1px solid var(--line);
}
.page-jumps a { color: var(--muted); font-size: .92rem; font-weight: 650; text-decoration: none; }
.page-jumps a:hover { color: var(--blue); text-decoration: underline; }

.hero {
  margin: 1.25rem 0 2rem;
  padding: clamp(1.5rem, 4.4vw, 3rem);
  background: linear-gradient(125deg, #eaf4f8 0%, #fff 68%);
  border: 1px solid #ccdde8;
  border-radius: 1rem;
}
.eyebrow { color: var(--teal); font-size: .82rem; font-weight: 800; letter-spacing: .11em; text-transform: uppercase; }
.hero-lead { max-width: 780px; color: #354b60; font-size: clamp(1.08rem, 2.2vw, 1.3rem); }
.hero-proof {
  max-width: 980px;
  margin: 1.35rem 0 1rem !important;
  padding: 1rem 1.15rem;
  background: #fff;
  border-left: 4px solid var(--teal);
  border-radius: .25rem .55rem .55rem .25rem;
  font-size: 1.05rem;
}
.speed-cards { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: .8rem; margin-top: 1.15rem; }
.speed-card {
  min-width: 0;
  padding: 1rem 1.05rem;
  background: #fff;
  border: 1px solid #d6e1e9;
  border-radius: .65rem;
  box-shadow: 0 3px 12px rgb(16 44 70 / 4%);
}
.speed-card--delta { border-color: #e5d3aa; }
.speed-card p { margin: 0; }
.speed-card__method { color: var(--muted); font-size: .9rem; font-weight: 700; }
.speed-card__value { margin: .2rem 0 !important; color: var(--navy); font-size: clamp(1.27rem, 2vw, 1.75rem); font-weight: 800; letter-spacing: -.035em; line-height: 1.2; font-variant-numeric: tabular-nums; }
.speed-card__note { color: var(--muted); font-size: .8rem; line-height: 1.35; }
.hero-footnote { color: var(--muted); font-size: .84rem; }

.benchmark-figure, .roadmap-figure { margin: 1.2rem 0 1rem; }
.benchmark-figure { padding: clamp(.5rem, 2vw, 1.2rem); background: #fff; border: 1px solid var(--line); border-radius: .75rem; }
.figure-open, .plot-card > a, .roadmap-figure > a { display: block; }
.benchmark-figure img { display: block; width: 100%; max-width: 1100px; margin: 0 auto; }
figcaption { color: var(--muted); font-size: .88rem; line-height: 1.5; }
.benchmark-figure figcaption { margin: .75rem .15rem .1rem; }
.benchmark-notes { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .85rem; margin: 1rem 0; }
.benchmark-notes--single { grid-template-columns: 1fr; }
.note-card { padding: 1rem 1.15rem; border: 1px solid var(--line); border-radius: .65rem; }
.note-card p { margin: .25rem 0 0; font-size: .94rem; }
.note-card--caution { background: var(--warm); border-color: var(--warm-line); }
.advanced-details {
  margin: 1rem 0 1.5rem;
  padding: .9rem 1.1rem;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: .6rem;
}
summary { color: var(--navy); cursor: pointer; font-weight: 750; }
.advanced-details > div { padding-top: .6rem; }

.two-column { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; margin: 1rem 0; }
.install-stack { display: grid; grid-template-columns: minmax(0, 1fr); gap: 1rem; margin: 1rem 0; }
.content-card, .method-card { min-width: 0; padding: 1.15rem; background: #fff; border: 1px solid var(--line); border-radius: .7rem; }
.content-card h3 { margin-top: 0; }
.content-card p:last-child { margin-bottom: 0; }
.code-label { margin: 0 0 .4rem; font-size: .92rem; font-weight: 500; color: var(--navy); }
pre {
  max-width: 100%;
  padding: 1rem 1.1rem;
  overflow-x: auto;
  color: #e9f1f8;
  background: #10283d;
  border-radius: .55rem;
  font-size: .88rem;
  line-height: 1.55;
  tab-size: 2;
}
code { font-family: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", monospace; }
p code, li code, td code { padding: .08rem .3rem; color: #173f5d; background: #edf3f7; border-radius: .25rem; font-size: .92em; }

.method-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: .8rem; margin: 1rem 0; }
.method-card { border-top: 3px solid #6da9b5; }
.method-card p { min-height: 4.5em; margin: .3rem 0 .7rem; color: var(--muted); font-size: .92rem; }
.method-card code { color: var(--teal); font-size: .9rem; font-weight: 700; }

.hetero-feature { padding: 1.5rem; background: #fff; border: 1px solid var(--line); border-top: 4px solid var(--teal); border-radius: .8rem; text-align: center; }
.hetero-feature h3 { margin: 0 0 .9rem; }
.hetero-feature figure { margin: 0; }
.hetero-feature img { display: block; width: 100%; max-width: 820px; margin: 0 auto; }
.hetero-feature figcaption { margin-top: .6rem; }
.hetero-feature .button-link { margin-top: .9rem; }
.case-page { --content-read: 1100px; }
.case-facts { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: .75rem; margin: 1.5rem 0; }
.case-facts div { padding: .9rem 1rem; border: 1px solid var(--line); background: #edf6f8; border-radius: .5rem; }
.case-facts strong { display: block; font-size: 1.6rem; color: var(--teal); }
.case-facts span { font-size: .88rem; color: var(--muted); }
.case-figure { margin: 1.4rem 0 2rem; padding: .75rem; border: 1px solid var(--line); border-radius: .6rem; }
.case-figure img { width: 100%; margin: 0; }
.case-figure figcaption { margin-top: .6rem; }
.case-downloads { display: flex; flex-wrap: wrap; gap: .5rem 1rem; padding: 1rem; background: #edf6f8; border-radius: .5rem; }

.plot-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; margin: 1rem 0; align-items: start; }
.plot-card { min-width: 0; margin: 0; padding: .7rem; background: #fff; border: 1px solid var(--line); border-radius: .7rem; }
.plot-card img { display: block; width: 100%; height: auto; border: 1px solid #edf0f2; }
.plot-card figcaption { display: flex; flex-direction: column; gap: .15rem; min-height: 4.4em; padding: .65rem .2rem .1rem; }
.plot-card figcaption strong { color: var(--navy); font-size: .96rem; }
.plot-card figcaption span { font-size: .84rem; }
.gallery-link { margin: 1.1rem 0 .4rem !important; }
.button-link { display: inline-block; padding: .68rem 1rem; color: #fff; background: var(--blue); border-radius: .4rem; font-weight: 700; text-decoration: none; }
.button-link:hover { color: #fff; background: #104f75; }
.caution-line { padding: .7rem .9rem; background: var(--warm); border-left: 3px solid var(--warm-line); font-size: .92rem; }

.roadmap-figure { padding: .85rem; background: #fff; border: 1px solid var(--line); border-radius: .7rem; }
.roadmap-figure > a { max-width: 100%; overflow-x: auto; }
.roadmap-figure img { display: block; width: 100%; min-width: 760px; max-width: 1100px; height: auto; margin: 0 auto; }
.roadmap-figure figcaption { padding-top: .65rem; }
.hetero-roadmap img { min-width: 680px; }
.closing-links { display: flex; flex-wrap: wrap; gap: .7rem 1.4rem; padding-top: 1rem; border-top: 1px solid var(--line); }

.document-page img { display: block; max-width: 100%; height: auto; margin-block: 1rem; }
.document-page table { display: block; width: 100%; overflow-x: auto; border-collapse: collapse; }
.document-page th, .document-page td { padding: .5rem .7rem; border: 1px solid var(--line); text-align: left; }
.document-page th { background: #edf4f8; }
.document-page blockquote { margin: 1rem 0; padding: .2rem 1rem; color: var(--muted); border-left: 3px solid #7aa7b5; }
.document-page hr { margin: 2rem 0; border: 0; border-top: 1px solid var(--line); }

.site-footer { padding: 1.15rem 0; color: #dce8f1; background: var(--navy); font-size: .88rem; }
.site-footer__inner { flex-wrap: wrap; }
.site-footer a { color: #dce8f1; }

@media (max-width: 850px) {
  .speed-cards, .method-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .plot-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 620px) {
  body { font-size: 15px; }
  .site-header__inner { align-items: flex-start; flex-direction: column; padding-block: .7rem; }
  .site-nav { gap: .25rem 1rem; }
  .home-page { width: min(calc(100% - 1.1rem), var(--content-wide)); padding-top: .65rem; }
  .document-page { width: min(calc(100% - 1rem), var(--content-read)); margin-block: .7rem 2rem; padding: 1rem; }
  .hero { padding: 1.15rem; border-radius: .7rem; }
  .speed-cards { gap: .5rem; }
  .speed-card { padding: .75rem; }
  .speed-card__value { font-size: clamp(1.05rem, 5vw, 1.45rem); }
  .benchmark-notes, .two-column, .plot-grid, .method-grid { grid-template-columns: 1fr; }
  .method-card p { min-height: 0; }
  .case-facts { grid-template-columns: 1fr; }
  .hetero-feature { padding: 1rem; }
  .plot-card { max-width: 520px; }
  .page-jumps { gap: .45rem .9rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}