:root {
  --ink: #142d35;
  --green: #70e571;
  --green-dark: #2ab654;
  --paper: #f4f5ef;
  --white: #fff;
  --muted: #5e7176;
  --line: #d9dfda;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }
a { color: inherit; }
.skip-link { position: absolute; left: -9999px; top: 1rem; z-index: 100; padding: .75rem 1rem; background: var(--green); border-radius: .5rem; }
.skip-link:focus { left: 1rem; }

.site-header { min-height: 82px; display: grid; grid-template-columns: auto auto 1fr; align-items: center; gap: 1.3rem; padding: 0 clamp(1.25rem, 5vw, 5rem); background: var(--white); border-bottom: 1px solid #e7ebe6; }
.brand img, footer img { display: block; width: 152px; }
.labs-mark { display: flex; align-items: center; gap: .45rem; padding-left: 1rem; border-left: 1px solid #b9c3bf; font-size: .78rem; font-weight: 900; letter-spacing: .15em; }
.labs-mark span { width: 8px; height: 8px; background: var(--green); border-radius: 50%; }
nav { justify-self: end; display: flex; align-items: center; gap: 2rem; font-size: .88rem; font-weight: 750; }
nav a { text-decoration: none; }
.nav-cta { padding: .8rem 1.1rem; border-radius: 999px; background: var(--ink); color: var(--white); }

.hero { min-height: 670px; display: grid; grid-template-columns: 1.05fr .95fr; align-items: center; gap: 4rem; padding: 6rem clamp(1.25rem, 7vw, 7rem); background: var(--ink); color: var(--white); overflow: hidden; }
.hero-copy { position: relative; z-index: 2; max-width: 760px; }
.eyebrow, .kicker { margin: 0 0 1.2rem; color: var(--green); font-size: .75rem; font-weight: 900; letter-spacing: .17em; }
.kicker { color: var(--green-dark); }
h1 { margin: 0; font-size: clamp(3.5rem, 6.4vw, 6.8rem); line-height: .92; letter-spacing: -.065em; }
.lede { max-width: 650px; margin: 2rem 0 2.4rem; color: #d4dfe0; font-size: clamp(1.1rem, 1.65vw, 1.4rem); line-height: 1.55; }
.button { display: inline-flex; align-items: center; justify-content: center; padding: .95rem 1.35rem; border-radius: 999px; background: var(--green); color: var(--ink); text-decoration: none; font-weight: 850; transition: transform .2s ease; }
.button:hover { transform: translateY(-2px); }

.signal { position: relative; min-height: 460px; }
.signal-grid { position: absolute; inset: 0; opacity: .24; background-image: linear-gradient(rgba(112,229,113,.28) 1px, transparent 1px), linear-gradient(90deg, rgba(112,229,113,.28) 1px, transparent 1px); background-size: 44px 44px; mask-image: radial-gradient(circle, black 30%, transparent 76%); }
.signal-card { position: absolute; min-width: 190px; padding: 1.35rem; display: flex; align-items: center; gap: 1rem; border: 1px solid rgba(255,255,255,.18); background: rgba(255,255,255,.08); backdrop-filter: blur(10px); border-radius: 14px; box-shadow: 0 20px 50px rgba(0,0,0,.22); }
.signal-card span { display: grid; place-items: center; width: 42px; height: 42px; background: var(--green); color: var(--ink); border-radius: 50%; font-size: .76rem; font-weight: 900; }
.signal-card strong { font-size: 1.15rem; }
.card-a { top: 8%; left: 8%; }
.card-b { top: 40%; right: 3%; }
.card-c { bottom: 5%; left: 18%; }
.signal-pulse { position: absolute; width: 210px; height: 210px; top: 29%; left: 31%; border: 2px solid var(--green); border-radius: 50%; box-shadow: 0 0 0 30px rgba(112,229,113,.06), 0 0 0 65px rgba(112,229,113,.04); }

.manifesto { max-width: 1240px; margin: 0 auto; padding: 8rem clamp(1.25rem, 3vw, 2.5rem); }
.statement { max-width: 1080px; margin: 0; font-size: clamp(2.2rem, 4vw, 4.4rem); line-height: 1.12; letter-spacing: -.045em; font-weight: 760; }
.section { padding: 7rem clamp(1.25rem, 7vw, 7rem); background: var(--white); }
.section-heading { max-width: 1240px; margin: 0 auto 3.2rem; display: grid; grid-template-columns: 1fr .75fr; align-items: end; gap: 4rem; }
.section-heading h2, .method h2, .closing h2 { margin: 0; font-size: clamp(2.4rem, 4.3vw, 4.5rem); line-height: 1.02; letter-spacing: -.05em; }
.section-heading > p { max-width: 560px; margin: 0; color: var(--muted); font-size: 1.07rem; line-height: 1.65; }
.feature-grid { max-width: 1240px; margin: 0 auto; display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.2rem; }
.research-card { min-height: 430px; padding: 2rem; display: flex; flex-direction: column; justify-content: space-between; border-radius: 20px; overflow: hidden; }
.dark-card { background: var(--ink); color: var(--white); }
.green-card { background: var(--green); color: var(--ink); }
.number { font-size: .76rem; font-weight: 900; letter-spacing: .15em; opacity: .65; }
.card-label { margin: 0 0 1rem; font-size: .72rem; font-weight: 900; letter-spacing: .15em; }
.research-card h3 { max-width: 520px; margin: 0 0 1rem; font-size: clamp(2rem, 3vw, 3rem); line-height: 1; letter-spacing: -.045em; }
.research-card p:not(.card-label) { max-width: 490px; margin: 0 0 2rem; line-height: 1.6; opacity: .78; }
.research-card a { font-weight: 850; text-decoration: none; border-bottom: 2px solid currentColor; }

.international { background: var(--paper); }
.country-grid { max-width: 1240px; margin: 0 auto; display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid var(--line); }
.country { min-height: 110px; padding: 1.4rem 1rem; display: grid; grid-template-columns: 65px 1fr auto; align-items: center; gap: 1rem; text-decoration: none; border-bottom: 1px solid var(--line); transition: background .2s ease, padding .2s ease; }
.country:nth-child(odd) { border-right: 1px solid var(--line); }
.country:hover { background: var(--white); padding-left: 1.4rem; }
.country span { display: grid; place-items: center; width: 50px; height: 50px; border-radius: 50%; background: var(--ink); color: var(--green); font-size: .75rem; font-weight: 900; }
.country strong { font-size: 1.25rem; }
.country i { font-style: normal; font-size: 1.15rem; }

.method { padding: 7rem clamp(1.25rem, 7vw, 7rem); background: var(--ink); color: var(--white); }
.method-copy { max-width: 860px; }
.method-steps { margin-top: 4rem; display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid #486067; }
.method-steps article { padding: 2rem 1.7rem 0 0; }
.method-steps span { color: var(--green); font-size: .75rem; font-weight: 900; letter-spacing: .12em; }
.method-steps h3 { margin: 1.3rem 0 .65rem; font-size: 1.2rem; }
.method-steps p { margin: 0; color: #b8c7c9; line-height: 1.55; }

.closing { text-align: center; padding: 8rem 1.25rem; background: var(--green); }
.closing h2 { max-width: 980px; margin: 0 auto 2.2rem; }
.dark-button { background: var(--ink); color: var(--white); }
footer { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 2rem; padding: 2.3rem clamp(1.25rem, 5vw, 5rem); background: var(--white); border-top: 1px solid var(--line); color: var(--muted); font-size: .82rem; }
.footer-brand { display: flex; align-items: center; gap: .8rem; }
.footer-brand span { padding-left: .8rem; border-left: 1px solid #aeb9b5; font-size: .7rem; font-weight: 900; letter-spacing: .14em; color: var(--ink); }
footer p { margin: 0; }
footer > div:last-child { display: flex; gap: 1.2rem; }
footer a { text-decoration: none; }

@media (max-width: 920px) {
  nav > a:not(.nav-cta) { display: none; }
  .hero { grid-template-columns: 1fr; padding-top: 4rem; }
  .signal { min-height: 390px; }
  .section-heading { grid-template-columns: 1fr; gap: 1.4rem; }
  .method-steps { grid-template-columns: repeat(2, 1fr); }
  footer { grid-template-columns: 1fr; }
}
@media (max-width: 660px) {
  .site-header { min-height: 70px; grid-template-columns: auto 1fr; }
  .brand img { width: 125px; }
  .labs-mark { justify-self: end; }
  nav { display: none; }
  .hero { min-height: auto; padding-bottom: 4rem; }
  .signal { min-height: 340px; }
  .signal-card { min-width: 160px; }
  .feature-grid, .country-grid, .method-steps { grid-template-columns: 1fr; }
  .country:nth-child(odd) { border-right: 0; }
  .research-card { min-height: 360px; }
  footer > div:last-child { flex-wrap: wrap; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}