:root{--mx:1200px}
*{box-sizing:border-box}
body.sibi-landing{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;line-height:1.5;color:#0f172a}
.container{max-width:var(--mx);margin:0 auto;padding:24px}
.grid{display:grid;gap:24px}
.grid-2{grid-template-columns:1fr}
.grid-3{grid-template-columns:1fr}
@media(min-width:900px){.grid-2{grid-template-columns:1.2fr .8fr}.grid-3{grid-template-columns:repeat(3,1fr)}}
.card{border:1px solid #e5e7eb;border-radius:16px;padding:20px;box-shadow:0 2px 10px rgba(0,0,0,.04);background:#fff}
.lead{font-size:clamp(16px,2vw,20px);opacity:.9;margin:.2rem 0 1rem}
.checks{padding-left:18px}
.checks li{margin:.25rem 0}
.btn{display:inline-block;padding:12px 18px;border-radius:12px;text-decoration:none;font-weight:600;border:1px solid #111;margin-right:8px}
.btn-primary{background:#111;color:#fff}
.btn-ghost{background:#fff;color:#111}
.muted{color:#6b7280}
.center{text-align:center}
.sibi-hero{padding:56px 0;background:#f8fafc}
.sibi-casos,.sibi-quees,.sibi-tecnico,.sibi-cta,.sibi-faq,.sibi-legal{padding:40px 0}
.cards{display:grid;gap:20px;grid-template-columns:1fr}
@media(min-width:900px){.cards{grid-template-columns:repeat(3,1fr)}}
.cta-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
details{border:1px solid #e5e7eb;border-radius:12px;padding:12px;margin:8px 0;background:#fff}
details>summary{cursor:pointer;font-weight:600}
.trust{margin-top:8px}