:root{
  --brand:#1d4ed8; /* azul */
  --accent:#f97316; /* naranja */
  --ink:#0b1220; --muted:#334155; --paper:#f8fafc; --ring:rgba(29,78,216,.35);
}
*{box-sizing:border-box}html,body{margin:0;padding:0}
body{font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:linear-gradient(180deg,#fff 0,#f6f8fb 100%);color:#111827;line-height:1.65}
a{color:var(--brand);text-decoration:none}img{max-width:100%;display:block;height:auto}
.wrap{max-width:1120px;margin:0 auto;padding:0 1.25rem}
.site-header{position:sticky;top:0;z-index:50;background:#fff;box-shadow:0 1px 0 rgba(0,0,0,.05)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:.5rem;padding:.75rem 0}
.brand{display:flex;align-items:center;gap:.5rem;font-weight:800;color:#111827}
.brand img{width:36px;height:36px}
.menu{display:flex;gap:1rem;align-items:center}
.menu a{padding:.5rem .75rem;border-radius:.5rem}.menu a:hover{background:#f1f5f9}.menu .btn{background:var(--brand);color:#fff}
.menu-toggle{display:none;border:1px solid #e2e8f0;border-radius:.5rem;padding:.5rem .75rem;background:#fff}
.hero{padding:4rem 0 3rem;background:radial-gradient(1200px 600px at 80% -40%, rgba(29,78,216,.15), transparent 60%)}
.hero.has-image{background:linear-gradient(180deg,rgba(29,78,216,.10),rgba(29,78,216,.03)), url('assets/photos/lupa.jpg') center/cover no-repeat;}
.hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:2rem;align-items:center}
.hero-copy h1{font-size:clamp(1.8rem,2.8vw,3rem);line-height:1.15;margin:0 0 .75rem}
.hero-copy p{font-size:1.05rem;color:#334155;margin:.5rem 0 1.25rem}
.accent{position:relative}.accent::after{content:'';position:absolute;left:0;right:0;bottom:.1em;height:.4em;background:linear-gradient(90deg, rgba(29,78,216,.28), rgba(249,115,22,.35));z-index:-1;border-radius:.25em}
.cta-row{display:flex;gap:.75rem;flex-wrap:wrap}
.btn{display:inline-block;padding:.75rem 1rem;border:1px solid #e2e8f0;border-radius:.75rem;font-weight:600}
.btn.primary{background:var(--brand);border-color:transparent;color:#fff;box-shadow:0 8px 20px -8px var(--ring)}
.section{padding:3rem 0}.section.alt{background:#fff}h2{font-size:clamp(1.4rem,2.2vw,2rem);margin:0 0 1rem}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem;margin-top:1rem}
.card{background:#fff;border:1px solid #e2e8f0;border-radius:.9rem;padding:1rem;box-shadow:0 8px 24px -16px rgba(2,6,23,.12)}
.card .thumb{border-radius:.6rem;overflow:hidden;border:1px solid #e2e8f0;margin-bottom:.5rem}
.card .thumb img{width:100%;aspect-ratio:16/9;object-fit:cover}
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem;margin-top:1.25rem}
.feature{background:#f8fafc;border:1px solid #e2e8f0;border-radius:.9rem;padding:1rem}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:.75rem;counter-reset:step}
.steps li{position:relative;background:#fff;border:1px solid #e2e8f0;border-radius:.9rem;padding:1rem 1rem 1rem 2.5rem;list-style:none}
.steps li::before{counter-increment:step;content:counter(step);position:absolute;left:.75rem;top:.75rem;width:1.5rem;height:1.5rem;border-radius:50%;display:grid;place-items:center;background:var(--brand);color:#fff;font-weight:700}
.galeria{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem}.galeria.many{grid-template-columns:repeat(4,1fr)}
@media(max-width:1100px){.galeria.many{grid-template-columns:repeat(3,1fr)}}@media(max-width:700px){.galeria,.galeria.many{grid-template-columns:repeat(2,1fr)}}
.site-footer{background:#0b1220;color:#e2e8f0}.site-footer a{color:#93c5fd}
.footer-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:1rem;padding:1.5rem 0}
.success-banner{background:#ecfdf5;border:1px solid #a7f3d0;color:#065f46;border-radius:.6rem;padding:.75rem 1rem;margin:.75rem 0;font-weight:600}
.estrellas{color:#f59e0b}
/* Responsive */
@media (max-width:900px){
  .hero-grid{grid-template-columns:1fr}
  .grid3,.features{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr 1fr}
  .menu{display:none;position:absolute;right:1rem;top:56px;background:#fff;border:1px solid #e2e8f0;border-radius:.5rem;padding:.5rem;flex-direction:column;min-width:220px}
  .menu a{padding:.6rem .75rem}.menu.show{display:flex}.menu-toggle{display:inline-block}
}
/* Overlay para mejorar legibilidad en hero */
.hero.has-image{position:relative;isolation:isolate}
.hero.has-image::before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(2,6,23,.28),rgba(2,6,23,.18));z-index:-1}


/* Hero carousel */
.hero-carousel{position:relative;overflow:hidden;height:420px;border-radius:1rem;box-shadow:0 8px 30px -12px rgba(0,0,0,.25)}
.hero-carousel img{width:100%;height:420px;object-fit:cover;display:none}
.hero-carousel img.active{display:block;animation:fade 1s}
@keyframes fade{from{opacity:.3}to{opacity:1}}
.hero-carousel .nav{position:absolute;top:50%;left:0;right:0;display:flex;justify-content:space-between;transform:translateY(-50%);padding:0 1rem}
.hero-carousel button{background:rgba(0,0,0,.4);color:#fff;border:none;padding:.5rem .8rem;font-size:1.2rem;border-radius:.5rem;cursor:pointer}


.hero-carousel{position:relative;overflow:hidden;height:420px;border-radius:1rem;box-shadow:0 8px 30px -12px rgba(0,0,0,.25)}
.hero-carousel .slide{position:absolute;top:0;left:0;width:100%;height:100%;display:none}
.hero-carousel .slide.active{display:block;animation:fade 1s}
.hero-carousel img{width:100%;height:100%;object-fit:cover}
.hero-carousel .overlay{position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,.4),rgba(0,0,0,.3))}
.hero-carousel .caption{position:absolute;bottom:20%;left:50%;transform:translateX(-50%);color:#fff;text-align:center;font-size:2rem;font-weight:700;text-shadow:0 2px 6px rgba(0,0,0,.6);padding:.5rem 1rem;border-radius:.5rem}
.hero-carousel .nav{position:absolute;top:50%;left:0;right:0;display:flex;justify-content:space-between;transform:translateY(-50%);padding:0 1rem;z-index:5}
.hero-carousel button{background:rgba(0,0,0,.4);color:#fff;border:none;padding:.5rem .8rem;font-size:1.2rem;border-radius:.5rem;cursor:pointer}


/* Featured image + TOC for articles */
.article-hero{margin:0 0 1rem;border-radius:.8rem;overflow:hidden;border:1px solid #e2e8f0;box-shadow:0 10px 24px -16px rgba(2,6,23,.12)}
.article-hero img{width:100%;height:360px;object-fit:cover;display:block}
.toc{background:#f8fafc;border:1px solid #e2e8f0;border-radius:.75rem;padding:1rem;margin:1rem 0}
.toc strong{display:block;margin-bottom:.25rem}
.toc a{display:block;padding:.25rem 0}