:root{--navy:#04142f;--blue:#0d47a1;--electric:#1565ff;--cyan:#00c2e8;--white:#fff;--light:#f5f8fc;--text:#14213d}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Arial,Helvetica,sans-serif;color:var(--text);background:#fff}
a{text-decoration:none;color:inherit}.container{width:min(1180px,92%);margin:auto}
header{position:sticky;top:0;z-index:20;background:rgba(4,20,47,.96);color:#fff;border-bottom:1px solid rgba(255,255,255,.1)}
.nav{display:flex;align-items:center;justify-content:space-between;min-height:72px}.brand{font-size:1.35rem;font-weight:800;letter-spacing:.3px}.brand span{color:var(--cyan)}
nav{display:flex;gap:22px;align-items:center;font-size:.94rem}.btn{display:inline-block;padding:12px 18px;border-radius:9px;background:var(--electric);color:#fff;font-weight:700}.btn.outline{background:transparent;border:1px solid #fff}
.hero{background:linear-gradient(115deg,rgba(4,20,47,.97),rgba(4,20,47,.78)),url('../img/portada-facebook.png') center/cover;min-height:620px;color:#fff;display:flex;align-items:center}
.hero h1{font-size:clamp(2.5rem,6vw,5rem);line-height:1.02;max-width:850px;margin:0 0 20px}.hero h1 span{color:var(--cyan)}.hero p{font-size:1.2rem;max-width:700px;line-height:1.6;color:#dce8ff}
.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}
section{padding:80px 0}.eyebrow{color:var(--electric);font-weight:800;text-transform:uppercase;letter-spacing:2px;font-size:.8rem}.title{font-size:clamp(2rem,4vw,3rem);margin:10px 0 16px}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.card{border:1px solid #e3eaf4;border-radius:16px;padding:25px;background:#fff;box-shadow:0 10px 35px rgba(10,30,70,.06)}.card h3{margin-top:5px}.icon{font-size:2rem}
.alt{background:var(--light)}.cta{background:linear-gradient(120deg,var(--navy),#082b68);color:#fff;border-radius:22px;padding:45px}
footer{background:#020c1d;color:#b9c9e8;padding:45px 0}.footergrid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:30px}
.small{font-size:.88rem;color:#8fa7cd}.mobile{display:none}
@media(max-width:820px){nav{display:none}.mobile{display:block}.grid{grid-template-columns:1fr}.hero{min-height:560px}.footergrid{grid-template-columns:1fr}.hero h1{font-size:2.7rem}}