:root{
  --bg: #ffffff;
  --surface: #f8fafc;
  --text: #111827;
  --muted: #6b7280;
  --fondo: #d4d7df;
  --border: #e5e7eb;
  

  --primary: #111827;
  --primary-contrast: #ffffff;

  --radius: 16px;
  --radius-sm: 12px;
  --container: 1100px;

  --shadow: 0 10px 25px rgba(0,0,0,.06);
  --shadow-soft: 0 8px 18px rgba(0,0,0,.05);

  --space-1: 8px;
  --space-2: 12px;
  --space-3: 16px;
  --space-4: 24px;
  --space-5: 32px;
  --space-6: 48px;

  --font: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
}

*{ box-sizing: border-box; }
html, body{ height: 100%; }
body{
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background: rgba(247, 245, 245, 0.92);
  line-height: 1.6;
}

a{ color: inherit; text-decoration: none; }
a:hover{ text-decoration: underline; }

img{ max-width: 100%; height: auto; display: block; }

.skip-link{
  position: absolute;
  left: -999px;
  top: 10px;
  background: var(--primary);
  color: var(--primary-contrast);
  padding: 10px 12px;
  border-radius: 10px;
}
.skip-link:focus{ left: 10px; }

code{
  font-family: var(--mono);
  font-size: 0.95em;
  padding: .15em .35em;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fbfbfc;
}

pre{
  margin: 0;
  overflow: auto;
}

pre code{
  display: block;
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: #0b1220;
  color: #e5e7eb;
  font-family: var(--mono);
  font-size: 0.95rem;
  line-height: 1.55;
}

/* Utilidades */
.muted{ color: var(--muted); }
.lead{ font-size: 1.05rem; color: var(--muted); max-width: 70ch; }