:root {
  color-scheme: light dark;
  --paper: #f7f5ef;
  --surface: #fffdf8;
  --ink: #1c2523;
  --muted: #596460;
  --line: #d8ddd7;
  --accent: #136a5b;
  --accent-soft: #dcece6;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background:
    radial-gradient(circle at 92% 4%, var(--accent-soft), transparent 34rem),
    var(--paper);
  color: var(--ink);
  font: 17px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

a { color: var(--accent); text-underline-offset: 0.18em; }

.shell { width: min(760px, calc(100% - 40px)); margin-inline: auto; }

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding-block: 28px;
}

.brand { color: var(--ink); font-weight: 800; text-decoration: none; }

nav { display: flex; flex-wrap: wrap; gap: 18px; font-size: 15px; }

main { padding-block: 54px 88px; }

.eyebrow {
  color: var(--accent);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

h1, h2 { line-height: 1.12; letter-spacing: -0.035em; }
h1 { max-width: 680px; margin: 12px 0 20px; font-size: clamp(42px, 9vw, 72px); }
h2 { margin: 42px 0 8px; font-size: 27px; }
p, li { color: var(--muted); }
.lede { max-width: 650px; font-size: 20px; }

.card {
  margin-top: 34px;
  padding: 24px 26px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: color-mix(in srgb, var(--surface) 90%, transparent);
}

.card h2 { margin-top: 0; }

footer {
  padding-block: 28px 46px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #101513;
    --surface: #18201d;
    --ink: #f1f5f2;
    --muted: #b4c0ba;
    --line: #334039;
    --accent: #78d8c1;
    --accent-soft: #173b32;
  }
}

@media (max-width: 560px) {
  header { align-items: flex-start; flex-direction: column; }
  main { padding-top: 34px; }
}