:root {
  color-scheme: light;
  --cedar: #2f5d4a;
  --cedar-dark: #1e3f32;
  --ink: #17211c;
  --muted: #58665f;
  --paper: #fbfcf9;
  --surface: #ffffff;
  --line: #dce5df;
  --soft: #edf4ef;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-size: 17px;
  line-height: 1.65;
}

header {
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}

nav,
main,
footer {
  width: min(760px, calc(100% - 40px));
  margin: 0 auto;
}

nav {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  color: var(--cedar-dark);
  font-size: 20px;
  font-weight: 750;
  text-decoration: none;
}

.nav-links { display: flex; gap: 20px; }

main { padding: 64px 0 80px; }

h1,
h2 {
  color: var(--cedar-dark);
  line-height: 1.2;
}

h1 {
  margin: 0 0 16px;
  font-size: clamp(36px, 8vw, 54px);
  letter-spacing: -0.035em;
}

h2 { margin-top: 42px; font-size: 25px; }

p,
li { max-width: 68ch; }

a { color: var(--cedar); text-underline-offset: 3px; }

.lede { color: var(--muted); font-size: 20px; }

.card {
  margin: 32px 0;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--surface);
}

.button {
  display: inline-block;
  padding: 12px 18px;
  border-radius: 10px;
  color: #fff;
  background: var(--cedar);
  font-weight: 700;
  text-decoration: none;
}

.notice {
  padding: 18px 20px;
  border-left: 4px solid var(--cedar);
  background: var(--soft);
}

.meta { color: var(--muted); font-size: 15px; }

footer {
  padding: 28px 0 48px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 15px;
}

@media (max-width: 520px) {
  nav { align-items: flex-start; flex-direction: column; padding: 18px 0; gap: 10px; }
  main { padding-top: 44px; }
}