:root {
  --bg: #ffffff;
  --fg: #1d2329;
  --muted: #5d6873;
  --line: #e2e6ea;
  --accent: #0b5cad;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #14181c; --fg: #e6e9ec; --muted: #9aa5b0; --line: #2a3138; --accent: #6aaef0; }
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--fg);
  font: 16px/1.65 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
header.top, main, footer.pie { max-width: 46rem; margin: 0 auto; padding: 0 1rem; }
header.top { padding-top: 1.5rem; padding-bottom: 1rem; border-bottom: 1px solid var(--line); }
.marca { font-weight: 700; font-size: 1.1rem; color: var(--fg); text-decoration: none; }
.marca span { font-weight: 400; color: var(--muted); }
main { padding-top: 2rem; padding-bottom: 3rem; }
h1 { font-size: 1.9rem; line-height: 1.2; margin: 0 0 .5rem; }
h2 { font-size: 1.2rem; margin: 2rem 0 .5rem; }
.fecha { color: var(--muted); margin-top: 0; }
a { color: var(--accent); }
.otros { margin-top: 3rem; padding-top: 1rem; border-top: 1px solid var(--line); }
.otros h2 { font-size: 1rem; color: var(--muted); margin-top: 0; }
.indice { list-style: none; padding: 0; }
.indice li { padding: .75rem 0; border-bottom: 1px solid var(--line); }
.indice a { font-weight: 600; text-decoration: none; }
.indice span { display: block; color: var(--muted); font-size: .9rem; }
footer.pie { border-top: 1px solid var(--line); padding-top: 1rem; padding-bottom: 2rem; color: var(--muted); font-size: .9rem; }
@media print {
  header.top, .otros, footer.pie { display: none; }
  body { background: #fff; color: #000; }
}