/* Estilos con fondo blanco, limpios y accesibles */
:root{
  --bg:#ffffff;
  --text:#0f172a;
  --muted:#475569;
  --line:#e2e8f0;
  --brand:#2563eb; /* azul sereno */
  --brand-2:#60a5fa;
  --card:#ffffff;
  --shadow:0 6px 18px rgba(2,8,23,.06);
  --radius:16px;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0;background:#fff;color:var(--text);font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,'Helvetica Neue',Arial}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none}
.container{max-width:1100px;margin:0 auto;padding:24px}

.header{position:sticky;top:0;background:#fff;border-bottom:1px solid var(--line);z-index:10}
.bar{display:flex;align-items:center;justify-content:space-between;gap:12px}
.logo-wrap{display:flex;align-items:center;gap:14px}
.logo-img{height:80px;width:auto;background:#fff;border:1px solid var(--line);border-radius:10px;padding:6px;box-shadow:var(--shadow)}
.logo-img.small{height:34px}
.brand .title{font-weight:700}
.brand .subtitle{display:block;font-size:13px;color:var(--muted)}
.nav a{margin:0 10px;color:var(--text);opacity:.8}
.nav a:hover{opacity:1}

.btn{display:inline-flex;align-items:center;gap:8px;background:linear-gradient(90deg,var(--brand),var(--brand-2));color:#fff;border:0;border-radius:999px;padding:12px 16px;box-shadow:var(--shadow);font-weight:600}
.btn.outline{background:#fff;border:1px solid var(--line);color:var(--text)}

.hero{display:grid;grid-template-columns:1fr;gap:16px;padding:40px 24px}
.h1{font-size:clamp(24px,3vw,40px);margin:8px 0}
.lead{font-size:18px;color:var(--muted)}
.bullets{margin:12px 0 0 18px;color:#334155}
.cta-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:14px}

.section-title{font-size:22px;margin:0 0 16px}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow)}
.card .meta{color:#64748b;font-size:13px;margin-top:6px}
.note{margin-top:12px;color:#475569}
.list{margin:0 0 12px 18px;color:#334155}

.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.fine{font-size:12px;color:#64748b}

.footer{background:#f8fafc;border-top:1px solid var(--line)}
.footer-grid{display:grid;grid-template-columns:1.4fr .6fr;gap:16px}

@media (max-width: 900px){
  .cards{grid-template-columns:1fr}
  .grid-2{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
}