:root {
  color-scheme: light;
  --ink: #082820;
  --muted: #526860;
  --green: #0c523e;
  --lime: #c4ef63;
  --paper: #f4f6ef;
  --card: #ffffff;
  --line: #dbe3db;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

main {
  width: min(760px, calc(100% - 32px));
  margin: 0 auto;
  padding: 56px 0 80px;
}

nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 56px;
}

.brand {
  color: var(--ink);
  font-size: 21px;
  font-weight: 800;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.nav-links { display: flex; gap: 18px; }
.nav-links a, a { color: var(--green); }

.eyebrow {
  color: var(--green);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1 {
  max-width: 680px;
  margin: 12px 0 18px;
  font-size: clamp(42px, 8vw, 72px);
  line-height: 0.98;
  letter-spacing: -0.055em;
}

h2 {
  margin: 40px 0 10px;
  font-size: 25px;
  line-height: 1.2;
  letter-spacing: -0.025em;
}

p, li { color: var(--muted); }
.lede { max-width: 650px; font-size: 20px; }

.card {
  margin-top: 34px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--card);
  box-shadow: 0 18px 45px rgba(8, 40, 32, 0.06);
}

.button {
  display: inline-block;
  margin-top: 10px;
  padding: 13px 18px;
  border-radius: 999px;
  background: var(--green);
  color: #fff;
  font-weight: 750;
  text-decoration: none;
}

.button:hover { background: #083f31; }

.callout {
  padding: 18px 20px;
  border-left: 5px solid var(--lime);
  border-radius: 12px;
  background: #edf4e8;
}

footer {
  margin-top: 64px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 560px) {
  main { padding-top: 28px; }
  nav { align-items: flex-start; margin-bottom: 42px; }
  .nav-links { flex-direction: column; gap: 6px; text-align: right; }
  .card { padding: 22px; border-radius: 20px; }
}