:root {
  --stone: #f5f2ec;
  --ink: #1c1917;
  --muted: #44403c;
  --accent: #0f766e;
  --card: #fff;
}
* { box-sizing: border-box; }
html { color-scheme: light; }
body {
  margin: 0;
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  background: var(--stone);
  color: var(--ink);
  line-height: 1.6;
  font-size: 17px;
}
header {
  background: #0f766e;
  color: #fff;
  padding: 1.25rem 1.5rem;
}
header a { color: #ccfbf1; }
main {
  max-width: 42rem;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 4rem;
}
h1 { font-size: 1.85rem; margin: 0 0 0.35rem; }
h2 { font-size: 1.2rem; margin: 1.75rem 0 0.5rem; }
.meta { color: var(--muted); font-size: 0.95rem; }
nav { margin: 0.75rem 0 0; font-size: 0.95rem; }
nav a { margin-right: 1rem; }
section {
  background: var(--card);
  border-radius: 12px;
  padding: 1rem 1.15rem;
  margin: 0.85rem 0;
  border: 1px solid #e7e5e4;
}
footer {
  color: var(--muted);
  font-size: 0.9rem;
  margin-top: 2rem;
}
a { color: var(--accent); }