:root {
  --bg: #f7f8fa;
  --surface: #ffffff;
  --fg: #14171f;
  --muted: #5b6273;
  --border: #e3e6ec;
  --accent: #1f4fd8;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1218;
    --surface: #161a22;
    --fg: #eef0f4;
    --muted: #9aa3b5;
    --border: #262c38;
    --accent: #7ea2ff;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
main { max-width: 760px; margin: 0 auto; padding: 48px 16px 64px; }
header { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 40px; }
.marca { font-weight: 700; font-size: 18px; color: var(--fg); text-decoration: none; letter-spacing: -0.01em; }
nav a { color: var(--muted); text-decoration: none; margin-left: 16px; font-size: 14px; }
nav a:hover { color: var(--fg); }
h1 { font-size: 34px; line-height: 1.2; letter-spacing: -0.02em; margin: 0 0 16px; }
h2 { font-size: 20px; margin: 32px 0 8px; }
p, li { color: var(--fg); }
.bajada { color: var(--muted); font-size: 18px; margin: 0 0 32px; }
.grilla { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 12px; margin: 24px 0 32px; }
.tarjeta { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 16px; }
.tarjeta strong { display: block; margin-bottom: 4px; }
.tarjeta span { color: var(--muted); font-size: 14px; }
a { color: var(--accent); }
footer { margin-top: 56px; padding-top: 16px; border-top: 1px solid var(--border); color: var(--muted); font-size: 14px; }
.fecha { color: var(--muted); font-size: 14px; }