:root {
  --text: #1c2024;
  --muted: #5a6470;
  --bg: #ffffff;
  --line: #d9dee3;
  --accent: #0b5a6b;
  --band: #f4f6f8;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 1rem;
  line-height: 1.6;
  overflow-wrap: break-word;
}

header, main, footer {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 1rem;
}

header {
  padding-top: 1.25rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line);
}

.site-name {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text);
  text-decoration: none;
}

main { padding-top: 1.5rem; padding-bottom: 2rem; }

h1 { font-size: 1.9rem; line-height: 1.25; margin: 0 0 1rem; }
h2 { font-size: 1.35rem; line-height: 1.3; margin: 2.25rem 0 0.5rem; }
h3 { font-size: 1.1rem; margin: 1.5rem 0 0.25rem; }

p, ul, ol { margin: 0 0 1rem; }
li { margin-bottom: 0.35rem; }

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

.updated { color: var(--muted); font-size: 0.9rem; }

table {
  width: 100%;
  border-collapse: collapse;
  margin: 0 0 1rem;
}

th, td {
  text-align: left;
  vertical-align: top;
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--line);
}

th { background: var(--band); }

footer {
  padding-top: 1rem;
  padding-bottom: 2rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.9rem;
}

footer p { margin: 0 0 0.5rem; }
footer nav a { margin-right: 1rem; white-space: nowrap; }

@media (max-width: 480px) {
  h1 { font-size: 1.6rem; }
  th, td { padding: 0.5rem; font-size: 0.95rem; }
}