:root {
  color-scheme: light;
  --ink: #1c1915;
  --muted: #5c564c;
  --line: #e4ddd2;
  --paper: #f7f4ee;
  --card: #fffdf9;
  --accent: #2f4a3c;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: Georgia, "Iowan Old Style", "Palatino Linotype", serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.55;
}

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

header, main, footer {
  width: min(42rem, calc(100% - 2rem));
  margin-inline: auto;
}

header { padding: 1.5rem 0 0.5rem; }

header a {
  color: inherit;
  text-decoration: none;
  letter-spacing: 0.04em;
  font-family: "Segoe UI", sans-serif;
  font-size: 0.85rem;
  text-transform: uppercase;
}

main { padding-bottom: 3rem; }

h1 {
  font-weight: 500;
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1.1;
  margin: 0.6rem 0 1rem;
}

h2 {
  font-family: "Segoe UI", sans-serif;
  font-size: 0.95rem;
  font-weight: 650;
  letter-spacing: 0.03em;
  margin: 2rem 0 0.4rem;
}

p, li { font-size: 1.05rem; }

.lead { font-size: 1.2rem; }

.diagram {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1rem;
  margin: 1.5rem 0;
}

.diagram svg { width: 100%; height: auto; display: block; }

.facts {
  display: grid;
  grid-template-columns: 8rem 1fr;
  gap: 0.35rem 1rem;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1rem 1.1rem;
  margin: 1rem 0;
  font-family: "Segoe UI", sans-serif;
  font-size: 0.95rem;
}

.facts dt { color: var(--muted); }
.facts dd { margin: 0; }

.action {
  display: inline-block;
  margin-top: 0.5rem;
  background: var(--accent);
  color: #f7f4ee;
  text-decoration: none;
  padding: 0.75rem 1rem;
  border-radius: 8px;
  font-family: "Segoe UI", sans-serif;
}

.note { color: var(--muted); font-size: 0.95rem; }

footer {
  border-top: 1px solid var(--line);
  padding: 1rem 0 2rem;
  color: var(--muted);
  font-family: "Segoe UI", sans-serif;
  font-size: 0.85rem;
}