/* Estilos compartidos de las páginas de contenido/SEO (HTML estático). Tema claro, marca CPM. */
:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --text-main: #0f172a;
  --text-muted: #475569;
  --text-soft: #64748b;
  --border: #e2e8f0;
  --bg-subtle: #f8fafc;
  --amber-bg: rgba(217, 119, 6, 0.10);
  --amber: #b45309;
  --green-bg: rgba(22, 163, 74, 0.10);
  --green: #15803d;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  color: var(--text-main);
  line-height: 1.7;
  background: #fff;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Header */
.site-header {
  border-bottom: 1px solid var(--border);
  background: #fff;
  position: sticky; top: 0; z-index: 10;
}
.site-header .wrap {
  max-width: 820px; margin: 0 auto; padding: 0.9rem 1.25rem;
  display: flex; align-items: center; justify-content: space-between;
}
.brand { font-weight: 800; font-size: 1.15rem; color: var(--text-main); letter-spacing: -0.02em; }
.brand span { color: var(--primary); }
.site-header .cta {
  background: var(--primary); color: #fff; padding: 0.5rem 1rem;
  border-radius: 8px; font-weight: 600; font-size: 0.9rem;
}
.site-header .cta:hover { background: var(--primary-dark); text-decoration: none; }

/* Article container */
main { max-width: 820px; margin: 0 auto; padding: 1.5rem 1.25rem 3rem; }
.breadcrumb { font-size: 0.85rem; color: var(--text-soft); margin: 0.5rem 0 1.25rem; }
.breadcrumb a { color: var(--text-soft); }
article h1 {
  font-size: 2.1rem; line-height: 1.2; letter-spacing: -0.025em;
  margin: 0 0 0.75rem; font-weight: 800;
}
.meta-line { color: var(--text-soft); font-size: 0.9rem; margin-bottom: 1.75rem; }
article h2 {
  font-size: 1.5rem; margin: 2.25rem 0 0.75rem; letter-spacing: -0.02em; font-weight: 700;
}
article h3 { font-size: 1.15rem; margin: 1.5rem 0 0.5rem; font-weight: 600; }
article p, article li { color: var(--text-muted); font-size: 1.05rem; }
article ul, article ol { padding-left: 1.3rem; }
article li { margin-bottom: 0.4rem; }
.lead { font-size: 1.2rem; color: var(--text-main); }

/* Callouts */
.callout {
  border-radius: 10px; padding: 1rem 1.25rem; margin: 1.5rem 0;
  border: 1px solid var(--border); background: var(--bg-subtle);
}
.callout.warn { background: var(--amber-bg); border-color: rgba(217,119,6,0.25); }
.callout.warn strong { color: var(--amber); }
.callout.ok { background: var(--green-bg); border-color: rgba(22,163,74,0.25); }
.callout.ok strong { color: var(--green); }
.callout p { margin: 0.35rem 0; }

/* Table */
table { width: 100%; border-collapse: collapse; margin: 1.25rem 0; font-size: 0.98rem; }
th, td { text-align: left; padding: 0.65rem 0.75rem; border-bottom: 1px solid var(--border); }
th { background: var(--bg-subtle); font-weight: 600; color: var(--text-main); }
td { color: var(--text-muted); }

/* CTA box */
.cta-box {
  margin: 2.5rem 0 0; padding: 1.75rem; border-radius: 14px;
  background: linear-gradient(135deg, #1e3a8a, #2563eb); color: #fff; text-align: center;
}
.cta-box h3 { color: #fff; margin: 0 0 0.5rem; font-size: 1.35rem; }
.cta-box p { color: rgba(255,255,255,0.9); margin: 0 0 1.1rem; }
.cta-box a {
  display: inline-block; background: #fff; color: var(--primary);
  padding: 0.7rem 1.5rem; border-radius: 8px; font-weight: 700;
}
.cta-box a:hover { text-decoration: none; opacity: 0.92; }

/* FAQ */
.faq h3 { font-size: 1.1rem; margin-top: 1.5rem; }

/* Related */
.related { margin-top: 2.5rem; border-top: 1px solid var(--border); padding-top: 1.5rem; }
.related h2 { font-size: 1.2rem; margin-top: 0; }
.related ul { list-style: none; padding: 0; }
.related li { margin-bottom: 0.5rem; }

/* Footer */
footer {
  border-top: 1px solid var(--border); background: var(--bg-subtle);
  color: var(--text-soft); font-size: 0.88rem;
}
footer .wrap { max-width: 820px; margin: 0 auto; padding: 1.5rem 1.25rem; }
footer a { color: var(--text-muted); }

/* Hub / index list */
.hub-list { list-style: none; padding: 0; margin: 1.5rem 0 0; }
.hub-list li { border: 1px solid var(--border); border-radius: 12px; padding: 1.1rem 1.25rem; margin-bottom: 1rem; transition: border-color .15s; }
.hub-list li:hover { border-color: var(--primary); }
.hub-list a.title { font-size: 1.2rem; font-weight: 700; color: var(--text-main); }
.hub-list p { margin: 0.35rem 0 0; color: var(--text-muted); }

@media (max-width: 640px) {
  article h1 { font-size: 1.7rem; }
  main { padding: 1rem 1rem 2rem; }
}