:root {
  --navy: #1f2a44;
  --gold: #b8892b;
  --ink: #1c2230;
  --muted: #5a6270;
  --bg: #ffffff;
  --soft: #f3f5f9;
  --line: #d9dee8;
}
@media (prefers-color-scheme: dark) {
  :root {
    --navy: #e8ecf5;
    --gold: #d4a63f;
    --ink: #e8ecf5;
    --muted: #a3acbd;
    --bg: #11151f;
    --soft: #1a2030;
    --line: #2b3347;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  font-size: 17px;
}
a { color: var(--gold); }
header, main, footer { width: 100%; max-width: 860px; margin: 0 auto; padding: 0 20px; }
header { display: flex; align-items: center; justify-content: space-between; padding-top: 22px; padding-bottom: 22px; border-bottom: 1px solid var(--line); flex-wrap: wrap; gap: 10px; }
.logo { font-weight: 800; letter-spacing: 0.14em; color: var(--navy); text-decoration: none; font-size: 20px; }
.logo span { color: var(--gold); }
nav a { margin-left: 18px; text-decoration: none; color: var(--muted); font-size: 15px; }
nav a:hover { color: var(--gold); }
h1 { font-size: 34px; line-height: 1.2; color: var(--navy); margin: 40px 0 12px; }
h2 { font-size: 22px; color: var(--navy); margin: 36px 0 8px; }
h3 { font-size: 18px; color: var(--navy); margin: 24px 0 6px; }
.lead { font-size: 20px; color: var(--muted); margin-bottom: 28px; }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; margin: 24px 0; }
.card { background: var(--soft); border: 1px solid var(--line); border-radius: 12px; padding: 18px 20px; }
.card h3 { margin-top: 0; }
.aviso { background: var(--soft); border-left: 4px solid var(--gold); padding: 12px 16px; border-radius: 6px; color: var(--muted); font-size: 15px; margin: 20px 0; }
ul { padding-left: 22px; }
li { margin: 6px 0; }
footer { border-top: 1px solid var(--line); margin-top: 56px; padding-top: 22px; padding-bottom: 40px; color: var(--muted); font-size: 14px; }
footer a { color: var(--muted); }
.small { font-size: 14px; color: var(--muted); }