:root {
  --ink: #172334;
  --muted: #5f6b7a;
  --line: #dce2e8;
  --paper: #fbfcfd;
  --panel: #fff;
  --navy: #16263d;
  --navy-soft: #223752;
  --green: #1f7a59;
  --green-bg: #e8f5ee;
  --amber: #95651a;
  --amber-bg: #fff4dd;
  --coral: #c55242;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font: 16px/1.65 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }
a { color: inherit; }
a:focus-visible, button:focus-visible { outline: 3px solid #e6ad50; outline-offset: 4px; }
.container { width: min(1120px, calc(100% - 40px)); margin: auto; }
.skip-link { position: absolute; left: 14px; top: -60px; z-index: 2; background: #fff; color: var(--ink); padding: 8px 12px; }
.skip-link:focus { top: 14px; }
.site-header { background: var(--navy); color: #fff; }
.nav { display: flex; align-items: center; justify-content: space-between; padding: 22px 0; }
.brand { font-size: 1.2rem; font-weight: 700; text-decoration: none; letter-spacing: .02em; }
.eyebrow { font-size: .72rem; letter-spacing: .15em; font-weight: 700; opacity: .72; }
.hero { background: var(--navy); color: #fff; padding: 86px 0 96px; }
.hero-grid, .two-col { display: grid; grid-template-columns: 1.1fr .9fr; gap: 72px; align-items: center; }
h1, h2, h3 { line-height: 1.15; margin: 0 0 18px; }
h1 { font-size: clamp(2.5rem, 6vw, 5.2rem); letter-spacing: -.055em; max-width: 750px; }
h2 { font-size: clamp(1.8rem, 3vw, 2.7rem); letter-spacing: -.03em; }
h3 { font-size: 1.3rem; }
p { max-width: 70ch; }
.lede { font-size: 1.18rem; max-width: 680px; color: #d7e0ec; }
.actions, .card-actions { display: flex; gap: 12px; margin-top: 30px; flex-wrap: wrap; }
.button { display: inline-block; border-radius: 5px; background: #d9efe4; color: #123d2d; padding: 11px 18px; text-decoration: none; font-weight: 700; }
.button.secondary { background: transparent; color: #fff; border: 1px solid #73849a; }
.button.secondary-light { background: transparent; color: var(--coral); border: 1px solid #e3b1a8; }
.workflow { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; justify-content: center; border: 1px solid #52657c; padding: 28px; border-radius: 8px; color: #dce8f5; }
.workflow span { font-weight: 700; }
.workflow b { color: #91b5a2; }
.section { padding: 76px 0; }
.section-muted { background: #f0f3f6; }
.section-heading { display: flex; justify-content: space-between; align-items: end; gap: 30px; margin-bottom: 28px; }
.section-intro { color: var(--muted); max-width: 34ch; margin: 0; }
.count, .muted { color: var(--muted); }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(350px, 1fr)); gap: 20px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: 28px; box-shadow: 0 5px 20px #17233408; }
.card-top { display: flex; justify-content: space-between; align-items: start; gap: 12px; }
.card-title { min-height: 52px; margin-top: -6px; }
.badge { display: inline-block; border-radius: 99px; padding: 3px 9px; font-size: .68rem; letter-spacing: .08em; font-weight: 800; }
.badge-good { background: var(--green-bg); color: var(--green); }
.badge-support { background: var(--amber-bg); color: var(--amber); }
.label { display: block; color: var(--muted); font-size: .72rem; text-transform: uppercase; letter-spacing: .12em; font-weight: 700; }
.comparison { display: grid; grid-template-columns: 1fr auto 1fr; gap: 14px; align-items: center; border-block: 1px solid var(--line); padding: 18px 0; }
.comparison strong { display: block; font-size: 1.12rem; }
.comparison .muted { display: block; font-size: .84rem; line-height: 1.35; margin-top: 5px; }
.arrow { color: var(--coral); font-size: 1.4rem; }
.card-validation, .card-detections { padding-top: 18px; }
.card-validation ul { list-style: none; padding: 0; margin: 8px 0 0; display: grid; gap: 3px; color: var(--green); font-weight: 650; }
.card-detections p { margin: 5px 0 0; color: var(--muted); }
.card-actions { margin-top: 24px; }
.card-actions .button { padding: 8px 13px; }
.method .section-heading { margin-bottom: 20px; }
.method-steps { display: grid; grid-template-columns: repeat(4, 1fr); list-style: none; padding: 0; margin: 0; border-top: 1px solid var(--line); }
.method-steps li { display: grid; grid-template-columns: auto 1fr; gap: 14px; padding: 22px 18px 0 0; border-right: 1px solid var(--line); margin-right: 18px; }
.method-steps li:last-child { border-right: 0; margin-right: 0; }
.method-steps li > span { color: var(--coral); font-weight: 800; }
.method-steps h3 { margin-bottom: 7px; }
.method-steps p { color: var(--muted); font-size: .92rem; margin: 0; }
.text-link { color: var(--coral); font-weight: 700; text-decoration: none; }
.safety { border-left: 4px solid var(--coral); padding-left: 26px; }
.experimental { border-top: 1px solid var(--line); }
.experimental h2 { max-width: 14ch; }
.site-footer { padding: 42px 0; color: var(--muted); border-top: 1px solid var(--line); font-size: .9rem; }
.footer-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.footer-brand { color: var(--ink); }
.footer-links { display: flex; flex-wrap: wrap; align-content: start; gap: 8px 18px; }
.footer-links a { color: var(--coral); font-weight: 600; }
.disclaimer { font-size: .84rem; }
.detail-hero { background: var(--navy); color: #fff; padding: 52px 0 64px; }
.detail-hero .lede { font-size: 1.5rem; }
.back { display: inline-block; color: #d7e0ec; text-decoration: none; margin-bottom: 50px; }
.overview-grid { align-items: start; }
.version-grid, .validation-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.validation-grid { grid-template-columns: repeat(3, 1fr); }
.version-grid > div, .validation-grid > div { background: #fff; border: 1px solid var(--line); border-radius: 8px; padding: 20px; }
.version-grid strong, .fixed-versions { font-size: 1.2rem; }
.status-list { list-style: none; padding: 0; margin: 12px 0 0; }
.status-list li { display: flex; justify-content: space-between; gap: 20px; padding: 13px 0; border-bottom: 1px solid var(--line); }
.link-stack { display: grid; gap: 7px; margin-top: 24px; padding-left: 0; list-style: none; }
.link-stack a { color: var(--coral); font-weight: 600; }

@media (max-width: 860px) {
  .hero-grid, .two-col { grid-template-columns: 1fr; gap: 36px; }
  .method-steps { grid-template-columns: repeat(2, 1fr); }
  .method-steps li:nth-child(2) { border-right: 0; margin-right: 0; }
}
@media (max-width: 600px) {
  .container { width: min(100% - 28px, 1120px); }
  .hero { padding: 58px 0 66px; }
  .section { padding: 54px 0; }
  .section-heading { display: block; }
  .section-intro { margin-top: 16px; }
  .cards { grid-template-columns: 1fr; }
  .workflow { justify-content: flex-start; padding: 20px; gap: 8px; }
  .workflow b { display: none; }
  .comparison { gap: 8px; }
  .comparison .muted { font-size: .76rem; }
  .version-grid, .validation-grid, .footer-grid { grid-template-columns: 1fr; }
  .method-steps { grid-template-columns: 1fr; }
  .method-steps li, .method-steps li:nth-child(2) { border-right: 0; border-bottom: 1px solid var(--line); margin: 0; padding: 18px 0; }
  .method-steps li:last-child { border-bottom: 0; }
  .nav { align-items: flex-start; gap: 12px; flex-direction: column; }
  .detail-hero { padding: 36px 0 48px; }
  .back { margin-bottom: 35px; }
}

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