:root {
  color-scheme: light;
  --bg: #f7f2ea;
  --paper: #fffaf2;
  --ink: #19352f;
  --muted: #64746f;
  --line: #ded3c3;
  --accent: #174f43;
}

* {
  box-sizing: border-box;
}

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

a {
  color: var(--accent);
}

.shell {
  width: min(920px, calc(100% - 32px));
  margin: 0 auto;
  padding: 40px 0 56px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 28px;
}

.brand {
  font-size: 20px;
  font-weight: 750;
  letter-spacing: 0;
}

.nav {
  display: flex;
  gap: 16px;
  font-size: 14px;
}

.paper {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: clamp(24px, 4vw, 44px);
}

h1 {
  margin: 0 0 8px;
  font-size: clamp(32px, 5vw, 48px);
  line-height: 1.05;
  letter-spacing: 0;
}

h2 {
  margin: 34px 0 10px;
  font-size: 22px;
  line-height: 1.25;
}

p,
li {
  font-size: 16px;
}

.updated {
  margin: 0 0 28px;
  color: var(--muted);
}

ul {
  padding-left: 22px;
}

footer {
  margin-top: 28px;
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 640px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
  }
}