:root {
  color-scheme: light;
  --ink: #15221c;
  --muted: #52625a;
  --paper: #f4f1e9;
  --card: #fbfaf6;
  --line: #cfd5cf;
  --accent: #0d6f51;
  --accent-soft: #dcece5;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-synthesis: none;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at top right, rgba(13, 111, 81, 0.09), transparent 32rem),
    var(--paper);
}

a {
  color: inherit;
}

.skip-link {
  position: absolute;
  top: -5rem;
  left: 1rem;
  z-index: 2;
  padding: 0.75rem 1rem;
  background: var(--ink);
  color: white;
}

.skip-link:focus {
  top: 1rem;
}

.site-header,
main,
footer {
  width: min(72rem, calc(100% - 2rem));
  margin-inline: auto;
}

.site-header {
  min-height: 5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  text-decoration: none;
  font-weight: 650;
}

.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 2.6rem;
  height: 2.6rem;
  border-radius: 0.75rem;
  background: var(--ink);
  color: white;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
}

.surface-label,
.eyebrow {
  color: var(--accent);
  font-size: 0.76rem;
  font-weight: 750;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero {
  padding: clamp(5rem, 12vw, 9rem) 0 clamp(4rem, 9vw, 7rem);
  max-width: 58rem;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 15ch;
  margin-bottom: 1.6rem;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(3rem, 8vw, 6.8rem);
  font-weight: 500;
  letter-spacing: -0.055em;
  line-height: 0.94;
}

h2 {
  margin-bottom: 1.4rem;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(2rem, 4vw, 3.6rem);
  font-weight: 500;
  letter-spacing: -0.035em;
  line-height: 1;
}

h3 {
  margin-bottom: 0.6rem;
  font-size: 1rem;
}

.lead {
  max-width: 49rem;
  color: var(--muted);
  font-size: clamp(1.08rem, 2vw, 1.35rem);
  line-height: 1.65;
}

.links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

.links a {
  padding: 0.75rem 1rem;
  border: 1px solid var(--ink);
  border-radius: 999px;
  text-decoration: none;
}

.links a:first-child {
  background: var(--ink);
  color: white;
}

.purpose,
.boundary {
  padding: clamp(4rem, 8vw, 7rem) 0;
  border-top: 1px solid var(--line);
}

.principles {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.principles article {
  min-height: 12rem;
  padding: 1.5rem;
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: var(--card);
}

.principles p,
.boundary span {
  color: var(--muted);
  line-height: 1.65;
}

.boundary {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: clamp(2rem, 7vw, 7rem);
}

.boundary ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.boundary li {
  display: grid;
  gap: 0.35rem;
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--line);
}

footer {
  min-height: 6rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.88rem;
}

@media (max-width: 44rem) {
  .surface-label {
    display: none;
  }

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

  .principles article {
    min-height: auto;
  }
}