:root {
  --bg: #f6f7f9;
  --card: #ffffff;
  --text: #1c2430;
  --muted: #5b6676;
  --accent: #1f6feb;
  --border: #e3e7ed;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f141b;
    --card: #161c25;
    --text: #e6eaf0;
    --muted: #9aa5b4;
    --accent: #58a6ff;
    --border: #273040;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  line-height: 1.65;
}

header {
  border-bottom: 1px solid var(--border);
  background: var(--card);
}

.wrap {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 20px;
}

header .wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 60px;
}

.marca {
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
}

nav a {
  color: var(--muted);
  text-decoration: none;
  margin-left: 18px;
  font-size: 0.95rem;
}

nav a:hover, nav a[aria-current="page"] { color: var(--accent); }

main .wrap { padding-top: 40px; padding-bottom: 56px; }

h1 { font-size: 1.9rem; line-height: 1.25; margin: 0 0 12px; }
h2 { font-size: 1.2rem; margin: 32px 0 8px; }

.lead { color: var(--muted); font-size: 1.1rem; margin-top: 0; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px 24px;
  margin-top: 28px;
}

ul { padding-left: 22px; }
li { margin-bottom: 6px; }

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

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

nav { white-space: nowrap; }

@media (max-width: 480px) {
  .marca { font-size: 0.95rem; }
  nav a { margin-left: 12px; font-size: 0.9rem; }
  h1 { font-size: 1.6rem; }
}

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

footer .wrap { padding-top: 20px; padding-bottom: 28px; }