:root {
  --ink: #101a18;
  --ink-soft: #40504b;
  --paper: #f5f4ed;
  --paper-2: #ecece3;
  --white: #fffef9;
  --line: rgba(16, 26, 24, .14);
  --signal: #b9f24a;
  --signal-deep: #417a35;
  --teal: #167f74;
  --navy: #0b2725;
  --amber: #e7b04c;
  --radius: 22px;
  --shadow: 0 20px 70px rgba(8, 33, 30, .10);
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration-color: rgba(22, 127, 116, .45); text-underline-offset: .18em; }
a:hover { text-decoration-color: var(--teal); }
.skip-link { position: fixed; left: 16px; top: -80px; z-index: 99; padding: 10px 16px; background: var(--signal); color: var(--ink); border-radius: 10px; }
.skip-link:focus { top: 14px; }
.shell { width: min(calc(100% - 40px), var(--max)); margin: 0 auto; }

.site-header { position: sticky; top: 0; z-index: 30; background: rgba(245, 244, 237, .88); border-bottom: 1px solid var(--line); backdrop-filter: blur(18px); }
.nav { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 11px; text-decoration: none; font-weight: 760; letter-spacing: -.035em; font-size: 1.22rem; }
.brand-mark { width: 29px; height: 29px; border: 1.5px solid currentColor; border-radius: 50%; position: relative; }
.brand-mark::before, .brand-mark::after { content: ""; position: absolute; inset: 6px 13px; background: currentColor; border-radius: 99px; transform: rotate(45deg); }
.brand-mark::after { transform: rotate(-45deg); }
.nav-links { display: flex; align-items: center; gap: 26px; font-size: .9rem; font-weight: 620; }
.nav-links a { text-decoration: none; }
.nav-links a[aria-current="page"] { color: var(--teal); }
.nav-status { display: inline-flex; align-items: center; gap: 7px; padding: 7px 11px; border: 1px solid var(--line); border-radius: 999px; color: var(--ink-soft); font-size: .77rem; }
.nav-status::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--signal-deep); }

.hero { padding: 88px 0 70px; overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(340px, .85fr); gap: 64px; align-items: center; }
.eyebrow { display: flex; align-items: center; gap: 10px; margin: 0 0 20px; color: var(--teal); font-size: .73rem; font-weight: 790; letter-spacing: .14em; text-transform: uppercase; }
.eyebrow::before { content: ""; width: 30px; height: 1px; background: currentColor; }
h1, h2, h3 { line-height: 1.05; letter-spacing: -.045em; margin-top: 0; }
h1 { font-size: clamp(3.35rem, 8vw, 6.8rem); max-width: 900px; margin-bottom: 26px; font-weight: 720; }
h2 { font-size: clamp(2rem, 4vw, 3.65rem); margin-bottom: 20px; }
h3 { font-size: 1.33rem; }
.hero-copy { max-width: 690px; color: var(--ink-soft); font-size: clamp(1.08rem, 2vw, 1.35rem); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.button { display: inline-flex; min-height: 50px; align-items: center; justify-content: center; gap: 10px; padding: 0 19px; border-radius: 999px; border: 1px solid var(--ink); text-decoration: none; font-weight: 720; font-size: .9rem; }
.button.primary { background: var(--ink); color: var(--white); }
.button.primary::after { content: "↗"; color: var(--signal); }
.button:hover { transform: translateY(-1px); }

.evidence-orbit { position: relative; aspect-ratio: 1; max-width: 500px; margin-inline: auto; border: 1px solid var(--line); border-radius: 50%; background: radial-gradient(circle, rgba(185, 242, 74, .28) 0 5%, transparent 5.5% 18%, rgba(22, 127, 116, .08) 18.5% 19%, transparent 19.5% 35%, rgba(16, 26, 24, .10) 35.5% 36%, transparent 36.5%); box-shadow: inset 0 0 70px rgba(22, 127, 116, .04); }
.orbit-node { position: absolute; display: grid; place-items: center; width: 98px; height: 98px; padding: 10px; border: 1px solid var(--line); border-radius: 50%; background: var(--white); box-shadow: var(--shadow); text-align: center; font-weight: 720; font-size: .75rem; line-height: 1.2; }
.orbit-node:nth-child(1) { top: 3%; left: 38%; }
.orbit-node:nth-child(2) { top: 35%; right: -4%; }
.orbit-node:nth-child(3) { bottom: 5%; right: 18%; }
.orbit-node:nth-child(4) { bottom: 12%; left: 7%; }
.orbit-node:nth-child(5) { top: 27%; left: -4%; }
.orbit-center { position: absolute; inset: 41%; display: grid; place-items: center; border-radius: 50%; background: var(--navy); color: var(--signal); font-size: .67rem; font-weight: 800; letter-spacing: .07em; text-transform: uppercase; }

.metric-strip { border-block: 1px solid var(--line); background: var(--paper-2); }
.metrics { min-height: 110px; display: grid; grid-template-columns: repeat(4, 1fr); align-items: stretch; }
.metric { padding: 26px 24px; border-right: 1px solid var(--line); }
.metric:first-child { border-left: 1px solid var(--line); }
.metric strong { display: block; font-size: 1.6rem; line-height: 1; letter-spacing: -.04em; }
.metric span { display: block; margin-top: 9px; color: var(--ink-soft); font-size: .78rem; }

.section { padding: 96px 0; }
.section.compact { padding: 62px 0; }
.section-head { display: flex; justify-content: space-between; align-items: end; gap: 30px; margin-bottom: 36px; }
.section-head p { max-width: 560px; margin: 0; color: var(--ink-soft); }
.cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.card { min-height: 310px; padding: 26px; border: 1px solid var(--line); border-radius: var(--radius); background: rgba(255, 254, 249, .7); text-decoration: none; display: flex; flex-direction: column; transition: transform .2s ease, background .2s ease, box-shadow .2s ease; }
.card:hover { transform: translateY(-4px); background: var(--white); box-shadow: var(--shadow); }
.card-top, .meta-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.type-label { color: var(--ink-soft); font-size: .71rem; font-weight: 740; letter-spacing: .08em; text-transform: uppercase; }
.evidence-pill { padding: 5px 9px; border: 1px solid var(--line); border-radius: 999px; color: var(--signal-deep); background: rgba(185, 242, 74, .13); font-size: .68rem; font-weight: 760; }
.card h3 { margin: 42px 0 12px; }
.card p { margin: 0; color: var(--ink-soft); font-size: .9rem; }
.card .arrow { margin-top: auto; font-size: 1.4rem; }

.dark-section { background: var(--navy); color: var(--white); }
.dark-section .eyebrow { color: var(--signal); }
.dark-section .study-row { border-color: rgba(255,255,255,.15); }
.study-list { border-top: 1px solid rgba(255,255,255,.15); }
.study-row { display: grid; grid-template-columns: 110px 1fr 150px 34px; gap: 24px; align-items: center; padding: 24px 0; border-bottom: 1px solid rgba(255,255,255,.15); color: inherit; text-decoration: none; }
.study-row strong { font-size: 1.06rem; }
.study-row span { color: rgba(255,255,255,.62); font-size: .8rem; }
.study-row .arrow { color: var(--signal); font-size: 1.35rem; }

.page-hero { padding: 70px 0 55px; border-bottom: 1px solid var(--line); }
.breadcrumbs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 30px; color: var(--ink-soft); font-size: .76rem; }
.breadcrumbs a { text-decoration: none; }
.breadcrumbs span::before { content: "/"; margin-right: 8px; color: rgba(16,26,24,.35); }
.page-hero h1 { max-width: 980px; font-size: clamp(3rem, 7vw, 6rem); }
.page-dek { max-width: 780px; margin: 0; color: var(--ink-soft); font-size: 1.2rem; }
.record-meta { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 30px; }
.record-meta span { padding: 8px 11px; border: 1px solid var(--line); border-radius: 999px; font-size: .75rem; background: rgba(255,255,255,.45); }

.record-layout { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 70px; align-items: start; }
.record-main { min-width: 0; }
.record-main > section { padding: 0 0 54px; margin-bottom: 54px; border-bottom: 1px solid var(--line); }
.record-main h2 { font-size: clamp(1.8rem, 3.5vw, 3rem); }
.record-main h3 { margin-top: 30px; }
.record-main p, .record-main li { color: var(--ink-soft); }
.record-main li + li { margin-top: 10px; }
.result-callout { padding: 30px; border-radius: var(--radius); background: var(--navy); color: var(--white); box-shadow: var(--shadow); }
.result-callout .kicker { color: var(--signal); font-size: .72rem; font-weight: 800; letter-spacing: .13em; text-transform: uppercase; }
.result-callout p { margin: 14px 0 0; color: var(--white); font-size: 1.35rem; line-height: 1.4; letter-spacing: -.02em; }
.side-card { position: sticky; top: 98px; padding: 24px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--white); box-shadow: 0 12px 50px rgba(8,33,30,.06); }
.side-card h2 { font-size: 1.25rem; }
.data-list { margin: 0; }
.data-list div { padding: 15px 0; border-top: 1px solid var(--line); }
.data-list dt { margin-bottom: 5px; color: var(--ink-soft); font-size: .68rem; font-weight: 760; letter-spacing: .1em; text-transform: uppercase; }
.data-list dd { margin: 0; font-size: .88rem; font-weight: 610; }
.source-list { list-style: none; padding: 0; margin: 0; }
.source-list li { padding: 17px 0; border-top: 1px solid var(--line); }
.source-list a { font-weight: 700; }
.source-list span { display: block; color: var(--ink-soft); font-size: .75rem; }

.method-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; counter-reset: methods; }
.method-card { padding: 28px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--white); counter-increment: methods; }
.method-card::before { content: "0" counter(methods); display: block; margin-bottom: 45px; color: var(--teal); font-size: .72rem; font-weight: 800; letter-spacing: .08em; }
.method-card p { color: var(--ink-soft); font-size: .9rem; }
.prose { max-width: 780px; }
.prose p, .prose li { color: var(--ink-soft); }
.prose h2 { margin-top: 66px; }
.notice { padding: 24px 26px; border-left: 3px solid var(--signal-deep); background: var(--white); }

.site-footer { padding: 52px 0 28px; background: #081d1b; color: rgba(255,255,255,.72); }
.footer-grid { display: grid; grid-template-columns: 1.3fr .7fr .7fr; gap: 44px; }
.site-footer .brand { color: var(--white); }
.site-footer p { max-width: 460px; font-size: .83rem; }
.footer-links { display: grid; gap: 8px; align-content: start; font-size: .85rem; }
.footer-links strong { margin-bottom: 8px; color: var(--white); font-size: .7rem; letter-spacing: .1em; text-transform: uppercase; }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; margin-top: 44px; padding-top: 20px; border-top: 1px solid rgba(255,255,255,.13); font-size: .72rem; }

.not-found { min-height: 70vh; display: grid; place-items: center; text-align: center; }
.not-found .code { font-size: clamp(6rem, 20vw, 14rem); line-height: .8; font-weight: 800; color: var(--teal); letter-spacing: -.08em; }

@media (max-width: 900px) {
  .hero-grid, .record-layout { grid-template-columns: 1fr; }
  .evidence-orbit { max-width: 410px; }
  .cards, .method-grid { grid-template-columns: repeat(2, 1fr); }
  .side-card { position: static; }
  .study-row { grid-template-columns: 90px 1fr 34px; }
  .study-row .journal { display: none; }
}

@media (max-width: 660px) {
  .shell { width: min(calc(100% - 28px), var(--max)); }
  .nav { min-height: 64px; }
  .nav-links a:not(.nav-status) { display: none; }
  .hero { padding: 58px 0; }
  .hero-grid { gap: 48px; }
  h1 { font-size: clamp(3rem, 17vw, 4.6rem); }
  .evidence-orbit { width: 88vw; }
  .orbit-node { width: 80px; height: 80px; font-size: .65rem; }
  .metrics { grid-template-columns: repeat(2, 1fr); }
  .metric:nth-child(3) { border-left: 1px solid var(--line); }
  .cards, .method-grid, .footer-grid { grid-template-columns: 1fr; }
  .section { padding: 70px 0; }
  .section-head { align-items: start; flex-direction: column; }
  .study-row { grid-template-columns: 74px 1fr 24px; gap: 14px; }
  .footer-bottom { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}