:root {
  color-scheme: dark;
  --bg: #0c1017;
  --surface: #141b25;
  --surface-2: #192331;
  --text: #edf2f7;
  --muted: #aab7c7;
  --accent: #72d4b4;
  --line: #2a3748;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

body {
  min-height: 100vh;
  margin: 0;
  background:
    radial-gradient(circle at 80% 0%, rgba(64, 145, 121, 0.16), transparent 35rem),
    var(--bg);
  color: var(--text);
  line-height: 1.65;
}

a { color: var(--accent); }
a:hover { text-decoration-thickness: 2px; }

.site-header,
footer {
  width: min(70rem, calc(100% - 2rem));
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.site-header { padding-block: 1.25rem; }

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--text);
  font-weight: 750;
  text-decoration: none;
}

.mark {
  display: grid;
  width: 2rem;
  height: 2rem;
  place-items: center;
  border: 1px solid var(--accent);
  border-radius: 0.6rem;
  color: var(--accent);
}

nav { display: flex; gap: 1rem; }
nav a { color: var(--muted); text-decoration: none; }
nav a:hover,
nav a[aria-current="page"] { color: var(--text); }

main {
  width: min(70rem, calc(100% - 2rem));
  margin: 5rem auto;
}

.hero { max-width: 54rem; padding-block: 2rem 4rem; }

.eyebrow {
  margin: 0 0 0.75rem;
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1, h2, h3 { line-height: 1.15; }
h1 { max-width: 14ch; margin: 0; font-size: clamp(2.5rem, 7vw, 5.5rem); letter-spacing: -0.045em; }
h2 { margin-top: 2.5rem; font-size: 1.6rem; }
h3 { margin-top: 0; font-size: 1.05rem; }

.lede {
  max-width: 48rem;
  margin-top: 1.5rem;
  color: var(--muted);
  font-size: clamp(1.1rem, 2vw, 1.35rem);
}

.panel {
  margin-block: 1.5rem;
  padding: clamp(1.25rem, 3vw, 2.25rem);
  border: 1px solid var(--line);
  border-radius: 1.25rem;
  background: linear-gradient(145deg, var(--surface), var(--surface-2));
}

.panel > h2:first-child { margin-top: 0; }
.panel.compact { max-width: 54rem; }

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

.grid article {
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}

.grid p,
.document p,
.document li { color: var(--muted); }

.document { max-width: 48rem; }
.document h1 { max-width: none; font-size: clamp(2.4rem, 6vw, 4.5rem); }
.document h2 { margin-top: 3rem; }
.document li + li { margin-top: 0.4rem; }
.centered { margin-top: 18vh; text-align: center; }
.centered h1,
.centered .lede { margin-inline: auto; }

.button {
  display: inline-block;
  margin-top: 1rem;
  padding: 0.65rem 1rem;
  border-radius: 0.7rem;
  background: var(--accent);
  color: #08110e;
  font-weight: 750;
  text-decoration: none;
}

footer {
  margin-top: 6rem;
  padding-block: 1.5rem 2.5rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.9rem;
}

@media (max-width: 720px) {
  .site-header,
  footer { align-items: flex-start; flex-direction: column; }
  main { margin-block: 2.5rem; }
  .hero { padding-bottom: 2rem; }
  .grid { grid-template-columns: 1fr; }
}