/* GBI Labs — presencia mínima. Estático, sin dependencias. */
:root {
  --ink: #16182b;
  --muted: #55596b;
  --line: #e6e7ee;
  --bg: #ffffff;
  --bg-soft: #f7f8fb;
  --accent: #4338ca;
  --accent-ink: #ffffff;
  --max: 880px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

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

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 24px; }

/* Header */
.site-header {
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: saturate(180%) blur(8px);
  position: sticky;
  top: 0;
  z-index: 10;
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.brand { font-weight: 700; font-size: 1.15rem; letter-spacing: -0.01em; color: var(--ink); }
.brand span { color: var(--accent); }
.nav a { color: var(--muted); font-size: 0.95rem; margin-left: 22px; }
.nav a:hover { color: var(--ink); text-decoration: none; }

/* Hero */
.hero { padding: 88px 0 64px; }
.eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 18px;
}
.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin: 0 0 18px;
}
.hero p.lead {
  font-size: 1.2rem;
  color: var(--muted);
  max-width: 620px;
  margin: 0 0 32px;
}
.btn {
  display: inline-block;
  background: var(--accent);
  color: var(--accent-ink);
  padding: 12px 22px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.98rem;
}
.btn:hover { text-decoration: none; opacity: 0.92; }

/* Secciones */
section { padding: 56px 0; }
section.soft { background: var(--bg-soft); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
h2 { font-size: 1.6rem; letter-spacing: -0.01em; margin: 0 0 8px; }
.section-intro { color: var(--muted); max-width: 620px; margin: 0 0 32px; }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 20px; }
.card {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 24px;
}
.card h3 { margin: 0 0 8px; font-size: 1.1rem; }
.card p { margin: 0; color: var(--muted); font-size: 0.97rem; }

/* Contenido legal */
.legal { padding: 56px 0 72px; }
.legal h1 { font-size: 2rem; letter-spacing: -0.01em; margin: 0 0 6px; }
.legal .updated { color: var(--muted); font-size: 0.92rem; margin-bottom: 32px; }
.legal h2 { font-size: 1.2rem; margin: 34px 0 8px; }
.legal p, .legal li { color: #2c2f42; }
.legal ul { padding-left: 22px; }
.legal li { margin-bottom: 6px; }

/* Footer */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 34px 0;
  color: var(--muted);
  font-size: 0.9rem;
}
.site-footer .wrap { display: flex; flex-wrap: wrap; gap: 8px 22px; align-items: center; justify-content: space-between; }
.site-footer a { color: var(--muted); }
.site-footer a:hover { color: var(--ink); }
.foot-links a { margin-left: 18px; }
.foot-links a:first-child { margin-left: 0; }

@media (max-width: 560px) {
  .hero { padding: 60px 0 44px; }
  .nav a { margin-left: 16px; }
  .foot-links a { margin: 0 14px 0 0; display: inline-block; }
}