:root {
  --ink: #101512;
  --muted: #606962;
  --paper: #f2f1eb;
  --card: #e8e8e0;
  --dark: #07110f;
  --dark-soft: #0c1a17;
  --acid: #c7ff4a;
  --line: rgba(16, 21, 18, .14);
  --sans: "Avenir Next", Avenir, "Segoe UI", Arial, sans-serif;
  --serif: Iowan Old Style, Baskerville, "Times New Roman", serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: var(--sans); -webkit-font-smoothing: antialiased; }
a { color: inherit; }
svg { display: block; }
.skip-link { position: fixed; z-index: 100; top: 12px; left: 12px; transform: translateY(-150%); background: var(--acid); padding: 10px 14px; }
.skip-link:focus { transform: none; }

.site-header { height: 86px; padding: 0 5vw; display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid var(--line); }
.brand { display: inline-flex; gap: 11px; align-items: center; text-decoration: none; font-weight: 600; font-size: 21px; letter-spacing: -.04em; }
.brand-mark { width: 30px; height: 30px; fill: none; stroke: currentColor; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
nav { display: flex; align-items: center; gap: clamp(18px, 3vw, 44px); font-size: 13px; }
nav a { text-decoration: none; }
.nav-cta { border: 1px solid var(--ink); padding: 10px 17px; transition: .2s; }
.nav-cta:hover { background: var(--ink); color: var(--paper); }

.hero { min-height: calc(100svh - 86px); display: grid; grid-template-columns: 1.08fr .92fr; border-bottom: 1px solid var(--line); }
.hero-copy { padding: clamp(70px, 10vw, 150px) 5vw 90px; display: flex; flex-direction: column; justify-content: center; }
.eyebrow { margin: 0 0 28px; display: flex; align-items: center; gap: 10px; font: 500 10px/1 var(--mono); text-transform: uppercase; letter-spacing: .14em; }
.eyebrow span { width: 6px; height: 6px; border-radius: 50%; background: #3e6558; }
h1, h2, h3, p { text-wrap: balance; }
h1 { max-width: 760px; margin: 0; font-size: clamp(54px, 6.6vw, 104px); font-weight: 500; line-height: .94; letter-spacing: -.065em; }
h1 em, h2 em { font-family: var(--serif); font-weight: 400; }
.lede { max-width: 620px; margin: 37px 0 0; color: var(--muted); font-size: clamp(16px, 1.35vw, 20px); line-height: 1.65; }
.hero-actions { margin-top: 42px; display: flex; align-items: center; gap: 32px; }
.button { display: inline-flex; justify-content: space-between; gap: 24px; min-width: 214px; padding: 15px 18px; text-decoration: none; font-size: 12px; }
.button-primary { background: var(--ink); color: white; }
.button-primary:hover { background: #2a352f; }
.text-link { display: inline-flex; gap: 14px; text-decoration: none; font-size: 12px; border-bottom: 1px solid currentColor; padding-bottom: 5px; }

.hero-visual { position: relative; min-height: 620px; overflow: hidden; background: var(--dark); color: white; display: grid; place-items: center; }
.hero-visual::before { content: ""; position: absolute; inset: 0; opacity: .3; background-image: linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px); background-size: 54px 54px; }
.hero-visual::after { content: ""; position: absolute; width: 45%; height: 45%; border-radius: 50%; background: rgba(199,255,74,.08); filter: blur(55px); }
.knot { position: relative; z-index: 2; width: min(68%, 430px); color: var(--acid); }
.knot svg { width: 100%; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; }
.knot circle { fill: var(--dark); }
.orbit { position: absolute; border: 1px solid rgba(199,255,74,.18); border-radius: 50%; }
.orbit-one { width: 70%; aspect-ratio: 1; }
.orbit-two { width: 90%; aspect-ratio: 1; }
.signal { position: absolute; z-index: 3; display: flex; gap: 8px; align-items: center; font: 9px var(--mono); color: #a4b3ad; }
.signal i { width: 5px; height: 5px; border-radius: 50%; background: var(--acid); box-shadow: 0 0 12px var(--acid); }
.signal-a { top: 23%; left: 11%; }
.signal-b { right: 9%; bottom: 25%; }
.visual-label { position: absolute; left: 25px; bottom: 21px; margin: 0; font: 9px var(--mono); letter-spacing: .12em; color: #61716b; }

.trust-strip { min-height: 108px; display: grid; grid-template-columns: 1.2fr repeat(4, 1fr); align-items: stretch; padding: 0 5vw; border-bottom: 1px solid var(--line); font: 10px var(--mono); text-transform: uppercase; letter-spacing: .06em; }
.trust-strip > * { margin: 0; display: flex; align-items: center; border-right: 1px solid var(--line); padding: 20px; }
.trust-strip > *:first-child { padding-left: 0; color: var(--muted); }
.trust-strip > *:last-child { border: 0; }
.trust-strip span { margin-right: 11px; color: #849087; }

.section { padding: clamp(85px, 11vw, 150px) 5vw; }
.section-heading { display: grid; grid-template-columns: 1fr 2.2fr 1fr; gap: 5vw; align-items: end; margin-bottom: 65px; }
.section-heading .eyebrow { align-self: start; }
h2 { margin: 0; font-size: clamp(42px, 4.7vw, 72px); line-height: 1; font-weight: 500; letter-spacing: -.055em; }
.section-heading > p:last-child { color: var(--muted); line-height: 1.65; font-size: 14px; margin: 0; }
.capability-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.capability { min-height: 410px; position: relative; padding: 28px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); transition: background .25s, transform .25s; }
.capability:hover { background: #e4e5dc; transform: translateY(-4px); }
.capability-number { margin: 0; font: 10px var(--mono); color: var(--muted); }
.capability-icon { margin: 76px 0 38px; width: 48px; color: #53665e; }
.capability-icon svg { fill: none; stroke: currentColor; stroke-width: 1.4; stroke-linecap: round; stroke-linejoin: round; }
.capability h3 { margin: 0 0 15px; font-size: 21px; font-weight: 500; letter-spacing: -.03em; }
.capability > p:last-child { max-width: 355px; margin: 0; color: var(--muted); line-height: 1.7; font-size: 13px; }

.research { padding-top: 40px; }
.research-card { display: grid; grid-template-columns: 1.2fr .8fr; color: inherit; text-decoration: none; border: 1px solid var(--line); transition: background .25s, transform .25s; }
.research-card:hover { background: #e7e8df; transform: translateY(-4px); }
.research-summary { padding: clamp(30px, 5vw, 70px); }
.research-meta { margin: 0 0 52px; color: var(--muted); font: 9px var(--mono); text-transform: uppercase; letter-spacing: .08em; }
.research-summary h3 { margin: 0 0 28px; font: 500 clamp(36px, 4vw, 62px)/1 var(--sans); letter-spacing: -.055em; }
.research-summary > p:not(.research-meta) { max-width: 690px; margin: 0 0 34px; color: var(--muted); font-size: 14px; line-height: 1.75; }
.research-results { margin: 0; display: grid; grid-template-columns: 1fr 1fr; background: var(--dark); color: white; }
.research-results div { min-height: 190px; padding: 28px; border-left: 1px solid rgba(255,255,255,.13); border-bottom: 1px solid rgba(255,255,255,.13); }
.research-results dt { color: var(--acid); font: 400 clamp(30px, 3vw, 48px)/1 var(--serif); }
.research-results dd { max-width: 190px; margin: 16px 0 0; color: #91a099; font-size: 11px; line-height: 1.6; }

.method { padding-top: 130px; padding-bottom: 130px; display: grid; grid-template-columns: .85fr 1.15fr; gap: 10vw; background: var(--dark); color: #eef3ee; }
.eyebrow.light { color: #a8b1ac; }
.eyebrow.light span { background: var(--acid); }
.method-intro h2 { max-width: 590px; }
.method-intro > p:not(.eyebrow) { max-width: 470px; margin: 32px 0; color: #9ba9a3; line-height: 1.75; font-size: 14px; }
.text-link.light { color: var(--acid); }
.method-list { margin: 0; padding: 0; list-style: none; border-top: 1px solid rgba(255,255,255,.14); }
.method-list li { display: grid; grid-template-columns: 55px 1fr; gap: 20px; padding: 28px 0; border-bottom: 1px solid rgba(255,255,255,.14); }
.method-list li > span { padding-top: 4px; color: var(--acid); font: 10px var(--mono); }
.method-list h3 { margin: 0 0 10px; font-size: 17px; font-weight: 500; }
.method-list p { max-width: 570px; margin: 0; color: #8f9f98; font-size: 12px; line-height: 1.7; }

.use-case { background: #dfe1d7; }
.use-case-card { display: grid; grid-template-columns: .85fr 1.15fr; gap: 10vw; }
.use-case-copy { border-left: 1px solid var(--line); padding-left: 6vw; }
.use-case-copy > p { margin: 0 0 22px; color: #465048; font-size: 15px; line-height: 1.75; }
.controls { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 35px; }
.controls span { padding: 8px 11px; border: 1px solid rgba(16,21,18,.25); font: 9px var(--mono); text-transform: uppercase; }

.contact { display: grid; grid-template-columns: 1fr 1fr; gap: 10vw; align-items: end; }
.contact-action { border-top: 1px solid var(--line); padding-top: 25px; }
.contact-action > p:first-child { max-width: 450px; color: var(--muted); line-height: 1.6; font-size: 14px; }
.contact-action > a { margin-top: 24px; display: flex; justify-content: space-between; align-items: center; padding-bottom: 14px; border-bottom: 1px solid var(--ink); text-decoration: none; font-size: clamp(19px, 2.2vw, 31px); letter-spacing: -.03em; }
.response-note { margin-top: 17px; color: #7c857e; font-size: 10px; }

.legal { padding: 70px 5vw 85px; border-top: 1px solid var(--line); background: #e8e9e1; }
.legal-heading { display: flex; justify-content: space-between; align-items: end; gap: 40px; margin-bottom: 50px; }
.legal-heading .eyebrow { margin-bottom: 5px; }
.legal-heading h2 { font-size: clamp(35px, 4vw, 58px); }
.legal-grid { display: grid; grid-template-columns: .8fr 1fr 1.5fr; gap: 5vw; padding-top: 28px; border-top: 1px solid var(--line); }
.legal-grid h3 { margin: 0 0 14px; font: 500 10px var(--mono); text-transform: uppercase; letter-spacing: .08em; }
.legal-grid p, .legal-grid address { margin: 0 0 13px; color: var(--muted); font: normal 11px/1.75 var(--sans); }
.legal-grid a { font-size: 11px; text-underline-offset: 3px; }

footer { min-height: 130px; padding: 30px 5vw; display: grid; grid-template-columns: 1fr 1fr 1fr; align-items: end; background: var(--dark); color: #aab4ae; font: 10px var(--mono); text-transform: uppercase; letter-spacing: .05em; }
.footer-brand { color: white; font-family: var(--sans); font-size: 18px; text-transform: none; letter-spacing: -.04em; }
footer p { margin: 0; text-align: center; }
footer p:last-child { text-align: right; }
footer a { color: inherit; text-underline-offset: 3px; }

/* Research article */
.article-page { background: #f4f3ed; }
.article-header { background: var(--paper); }
.article-hero { padding: clamp(80px, 11vw, 155px) 10vw 80px; border-bottom: 1px solid var(--line); }
.article-hero h1 { max-width: 1100px; }
.article-deck { max-width: 820px; margin: 42px 0 38px; color: var(--muted); font-size: clamp(18px, 1.7vw, 24px); line-height: 1.55; }
.article-byline { display: flex; flex-wrap: wrap; gap: 8px 26px; color: #727c74; font: 9px var(--mono); text-transform: uppercase; letter-spacing: .08em; }
.article-layout { display: grid; grid-template-columns: minmax(180px, 1fr) minmax(0, 3fr); gap: 8vw; max-width: 1300px; margin: 0 auto; padding: 90px 5vw 140px; }
.article-aside { align-self: start; position: sticky; top: 30px; padding-top: 14px; border-top: 1px solid var(--ink); }
.article-aside > p { margin: 0 0 20px; font: 500 9px var(--mono); text-transform: uppercase; letter-spacing: .1em; }
.article-aside ul { margin: 0; padding: 0; list-style: none; }
.article-aside li { padding: 10px 0; border-bottom: 1px solid var(--line); color: var(--muted); font-size: 11px; line-height: 1.45; }
.article-body { max-width: 850px; }
.article-body p { margin: 0 0 24px; color: #3f4942; font: 16px/1.82 var(--sans); text-wrap: pretty; }
.article-body .standfirst { color: var(--ink); font: 400 clamp(21px, 2.2vw, 30px)/1.55 var(--serif); }
.article-body h2 { margin: 88px 0 28px; padding-top: 18px; border-top: 1px solid var(--ink); font-size: clamp(30px, 3.3vw, 48px); }
.table-wrap { overflow-x: auto; margin: 32px 0; }
.article-body table { width: 100%; border-collapse: collapse; font-size: 11px; line-height: 1.45; }
.article-body th { text-align: left; font: 500 9px var(--mono); text-transform: uppercase; letter-spacing: .08em; }
.article-body th, .article-body td { padding: 14px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
.article-body th:first-child, .article-body td:first-child { padding-left: 0; }
.status { color: #236b47; font: 600 9px var(--mono); text-transform: uppercase; }
.status.reported { color: #786b22; }
.finding-metric { display: grid; grid-template-columns: auto 1fr; gap: 25px; align-items: center; margin: 36px 0; padding: 28px; background: var(--dark); color: white; }
.finding-metric strong { color: var(--acid); font: 400 58px/1 var(--serif); }
.finding-metric span { max-width: 440px; color: #9ba9a3; font-size: 11px; line-height: 1.6; }
.article-body blockquote { margin: 55px 0; padding: 0 0 0 30px; border-left: 2px solid var(--acid); font: 400 clamp(25px, 3vw, 40px)/1.35 var(--serif); }
.timeline { margin: 35px 0; padding: 0; list-style: none; }
.timeline li { display: grid; grid-template-columns: 95px 1fr; gap: 25px; padding: 20px 0; border-bottom: 1px solid var(--line); }
.timeline time { color: var(--muted); font: 10px var(--mono); }
.timeline span { color: var(--muted); font-size: 12px; line-height: 1.6; }
.timeline strong { display: block; margin-bottom: 4px; color: var(--ink); font-size: 14px; font-weight: 500; }
.article-cta { margin-top: 90px; padding: 35px; background: #dfe1d7; }
.article-cta p { margin-bottom: 24px; color: var(--ink); font-size: 17px; }

.js .reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s ease, transform .7s ease; }
.js .reveal.visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .reveal { opacity: 1; transform: none; transition: none; }
}

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; }
  .hero-visual { min-height: 520px; }
  .trust-strip { grid-template-columns: 1fr 1fr; padding: 0; }
  .trust-strip > * { min-height: 75px; padding: 20px 5vw; border-bottom: 1px solid var(--line); }
  .trust-strip > *:first-child { grid-column: 1 / -1; padding-left: 5vw; }
  .section-heading { grid-template-columns: 1fr; }
  .section-heading > p:last-child { max-width: 450px; }
  .method, .use-case-card, .research-card { grid-template-columns: 1fr; }
  .legal-heading { align-items: start; flex-direction: column; }
  .legal-grid { grid-template-columns: 1fr 1fr; }
  .legal-grid > div:last-child { grid-column: 1 / -1; }
  .use-case-copy { border-left: 0; border-top: 1px solid var(--line); padding: 35px 0 0; }
  .article-layout { grid-template-columns: 1fr; }
  .article-aside { position: static; }
}

@media (max-width: 640px) {
  .site-header { height: 72px; }
  nav a:not(.nav-cta) { display: none; }
  .hero { min-height: auto; }
  .hero-copy { padding-top: 80px; }
  h1 { font-size: clamp(49px, 15vw, 70px); }
  .hero-actions { align-items: flex-start; flex-direction: column; }
  .hero-visual { min-height: 430px; }
  .signal-b { right: 4%; }
  .capability-grid { grid-template-columns: 1fr; }
  .capability { min-height: 340px; }
  .capability-icon { margin-top: 45px; }
  .method { padding-top: 90px; padding-bottom: 90px; }
  .research-results { grid-template-columns: 1fr; }
  .research-results div { min-height: 145px; }
  .contact { grid-template-columns: 1fr; }
  .legal-grid { grid-template-columns: 1fr; }
  .legal-grid > div:last-child { grid-column: auto; }
  footer { grid-template-columns: 1fr 1fr; gap: 28px; }
  footer p:nth-child(2) { display: none; }
  .article-hero { padding-left: 5vw; padding-right: 5vw; }
  .article-layout { padding-top: 55px; }
  .timeline li { grid-template-columns: 1fr; gap: 8px; }
}