:root {
  color-scheme: light;
  --ink: #16231d;
  --muted: #5b6962;
  --paper: #f7f5ef;
  --panel: #ebe8dd;
  --accent: #19644a;
  --accent-soft: #d7e9df;
  --line: #d7d4ca;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--paper);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
  line-height: 1.5;
}

body {
  margin: 0;
}

a {
  color: inherit;
}

.shell {
  width: min(1120px, calc(100% - 40px));
  margin-inline: auto;
}

.narrow {
  max-width: 760px;
  margin-inline: auto;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 84px;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  gap: 10px;
  align-items: center;
  font-size: 1.05rem;
  font-weight: 750;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border-radius: 11px 11px 15px 11px;
  background: var(--accent);
  color: white;
  font-size: 0.9rem;
}

.status {
  border: 1px solid #b5cabf;
  border-radius: 999px;
  background: var(--accent-soft);
  color: #174b39;
  padding: 5px 11px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.hero {
  padding-block: clamp(72px, 11vw, 150px) clamp(70px, 9vw, 120px);
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  max-width: 880px;
  margin-bottom: 26px;
  font-size: clamp(2.65rem, 7vw, 6rem);
  font-weight: 760;
  letter-spacing: -0.06em;
  line-height: 0.98;
}

.lede {
  max-width: 760px;
  margin-bottom: clamp(48px, 7vw, 84px);
  color: var(--muted);
  font-size: clamp(1.1rem, 2.4vw, 1.45rem);
}

.principles {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
}

.principles article {
  padding: 25px 30px 0 0;
}

.principles article + article {
  border-left: 1px solid var(--line);
  padding-left: 30px;
}

.principles h2,
.lab-note h2 {
  margin-bottom: 8px;
  font-size: 1.12rem;
  letter-spacing: -0.025em;
}

.principles p,
.lab-note p,
.site-footer {
  color: var(--muted);
}

.principles p {
  max-width: 30ch;
  margin-bottom: 0;
}

.lab-note {
  background: var(--panel);
  padding-block: clamp(58px, 8vw, 94px);
}

.lab-note h2 {
  color: var(--ink);
  font-size: clamp(1.6rem, 4vw, 2.5rem);
}

.lab-note p:last-child {
  max-width: 62ch;
  margin-bottom: 0;
  font-size: 1.05rem;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding-block: 28px;
  font-size: 0.82rem;
}

.site-footer p {
  margin: 0;
}

@media (max-width: 720px) {
  .shell {
    width: min(100% - 28px, 1120px);
  }

  .site-header {
    min-height: 70px;
  }

  .principles {
    grid-template-columns: 1fr;
  }

  .principles article {
    padding: 22px 0;
  }

  .principles article + article {
    border-top: 1px solid var(--line);
    border-left: 0;
    padding-left: 0;
  }

  .site-footer {
    flex-direction: column;
    gap: 5px;
  }
}