:root{
  --indigo:#6366f1;
  --violet:#8b5cf6;
  --emerald:#34d399;
  --ink:#0f172a;
  --muted:#64748b;
  --bg:#ffffff;
  --soft:#f8fafc;
  --border:#e2e8f0;
  --radius:18px;
  --shadow:0 10px 30px rgba(15,23,42,.08);
  --grad:linear-gradient(135deg,var(--indigo),var(--violet) 55%,var(--emerald));
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Segoe UI',system-ui,-apple-system,Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.6}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
.container{width:min(1140px,92%);margin:0 auto}

/* botones */
.btn{display:inline-flex;align-items:center;gap:.5rem;padding:.8rem 1.4rem;border-radius:999px;font-weight:600;transition:.2s;cursor:pointer;border:2px solid transparent}
.btn svg{width:18px;height:18px;flex:none}
.btn-sm{padding:.5rem 1rem;font-size:.9rem}
.btn-primary{background:var(--grad);color:#fff}
.btn-primary:hover{opacity:.92;transform:translateY(-1px)}
.btn-login{background:#0e5fa4;color:#fff;box-shadow:0 6px 18px rgba(14,95,164,.35);transition:.25s}
.btn-login:hover{background:#fff;color:#4f46e5;box-shadow:0 6px 18px rgba(0,0,0,.12)}
.btn-ghost{border-color:#fff;color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.12)}
.btn-light{background:#fff;color:var(--ink)}
.btn-light:hover{transform:translateY(-1px);box-shadow:var(--shadow)}

/* nav */
.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.85);backdrop-filter:blur(10px);border-bottom:1px solid var(--border)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;padding:1rem 0}
.brand{display:flex;align-items:center;gap:.6rem}
.brand-logo{height:57px;width:auto}
.brand-name{font-weight:700;font-size:1.25rem}
.nav-links{display:flex;align-items:center;gap:1.6rem}
.nav-links a:not(.btn){font-weight:500;color:var(--ink)}
.nav-links a:not(.btn):hover{color:var(--indigo)}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:6px}
.nav-toggle span{width:26px;height:3px;background:var(--ink);border-radius:3px}

/* hero */
.hero{position:relative;overflow:hidden;background:var(--grad);color:#fff;min-height:100vh;display:flex;align-items:center;padding:7rem 0}
.hero-bg{position:absolute;inset:0;z-index:0}
.hero-video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero-scrim{position:absolute;inset:0;background:linear-gradient(180deg,rgba(15,23,42,.62),rgba(15,23,42,.78))}
.hero-inner{position:relative;z-index:1;max-width:840px;margin:0 auto;text-align:center}
.badge{display:inline-block;background:rgba(255,255,255,.18);padding:.35rem .9rem;border-radius:999px;font-size:.85rem;margin-bottom:1rem}
.hero h1{font-size:clamp(2rem,4vw,3.1rem);line-height:1.15;font-weight:800}
.grad-text{color:#fff}
.lead{margin:1.2rem auto 1.8rem;font-size:1.1rem;color:rgba(255,255,255,.92);max-width:34rem}
.hero-cta{display:flex;gap:1rem;flex-wrap:wrap;justify-content:center}

/* secciones */
.section{padding:4.5rem 0}
.section-soft{background:var(--soft)}
.section-head{text-align:center;max-width:40rem;margin:0 auto 2.8rem}
.section-head h2{font-size:clamp(1.6rem,3vw,2.3rem);font-weight:800}
.section-head p{color:var(--muted);margin-top:.6rem}
.grid{display:grid;gap:1.5rem}
.grid-3{grid-template-columns:repeat(3,1fr)}

.card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:1.8rem;box-shadow:var(--shadow);transition:.2s}
.card:hover{transform:translateY(-4px)}
.icon{width:54px;height:54px;border-radius:14px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--indigo),var(--emerald));color:#fff;margin-bottom:1rem}
.icon svg{width:28px;height:28px}
.card h3{font-size:1.2rem;margin-bottom:.4rem}
.card p{color:var(--muted);font-size:.96rem}

.step{background:#fff;border-radius:var(--radius);padding:1.8rem;text-align:center;box-shadow:var(--shadow);border:1px solid var(--border)}
.step-num{display:inline-flex;align-items:center;justify-content:center;width:48px;height:48px;border-radius:50%;background:var(--grad);color:#fff;font-weight:700;font-size:1.2rem;margin-bottom:.8rem}
.step h3{font-size:1.15rem;margin-bottom:.3rem}
.step p{color:var(--muted)}

/* capturas */
.shots img{border-radius:14px;border:1px solid var(--border);box-shadow:var(--shadow);transition:.2s;cursor:zoom-in}
.shots img:hover{transform:scale(1.02)}

/* modal demo */
.modal{position:fixed;inset:0;z-index:200;display:none;align-items:center;justify-content:center;padding:1.5rem}
.modal.open{display:flex}
.modal-scrim{position:absolute;inset:0;background:rgba(15,23,42,.6);backdrop-filter:blur(4px)}
.modal-card{position:relative;width:min(600px,100%);background:#fff;border-radius:var(--radius);padding:2rem;box-shadow:0 24px 70px rgba(15,23,42,.35);animation:modalIn .25s ease}
@keyframes modalIn{from{opacity:0;transform:translateY(12px) scale(.98)}to{opacity:1;transform:none}}
.modal-card h2{font-size:1.5rem;font-weight:800;margin-bottom:.3rem}
.modal-sub{color:var(--muted);font-size:.95rem;margin-bottom:1.2rem}
.modal-close{position:absolute;top:.7rem;right:1rem;background:none;border:0;color:var(--muted);font-size:2rem;line-height:1;cursor:pointer}
.modal-close:hover{color:var(--ink)}
@media (max-width:480px){
  .modal{padding:.6rem}
  .modal-card{padding:1.2rem 1rem 1.4rem}
  .modal-card h2{font-size:1.3rem}
  .modal-sub{font-size:.9rem;margin-bottom:1rem}
  .field input,.field textarea{padding:.65rem .8rem}
}
.field{margin-bottom:1rem}
.tabs{display:flex;gap:.5rem;margin-bottom:1.2rem}
.tab{flex:1;padding:.6rem .5rem;border:1px solid var(--border);background:var(--soft);border-radius:12px;font:inherit;font-weight:600;font-size:.9rem;color:var(--muted);cursor:pointer;transition:.2s}
.tab:hover{color:var(--ink)}
.tab.active{border-color:var(--indigo);background:#fff;color:var(--ink);box-shadow:0 0 0 3px rgba(99,102,241,.15)}
.tab-panel{display:none}
.tab-panel.active{display:block}
.field label{display:block;font-weight:600;font-size:.9rem;margin-bottom:.35rem}
.field input,.field textarea{width:100%;padding:.7rem .9rem;border:1px solid var(--border);border-radius:12px;font:inherit;color:var(--ink);background:var(--soft);transition:.2s}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--indigo);background:#fff;box-shadow:0 0 0 3px rgba(99,102,241,.15)}
.field input.invalid,.field textarea.invalid{border-color:#ef4444;background:#fef2f2}
.modal-submit{width:100%;justify-content:center;margin-top:.4rem}

/* lightbox */
.lightbox{position:fixed;inset:0;z-index:100;display:none;align-items:center;justify-content:center;background:rgba(15,23,42,.92);padding:2rem}
.lightbox.open{display:flex}
.lightbox img{max-width:92vw;max-height:88vh;border-radius:12px;box-shadow:0 20px 60px rgba(0,0,0,.5)}
.lightbox-close{position:absolute;top:1rem;right:1.6rem;background:none;border:0;color:#fff;font-size:2.6rem;line-height:1;cursor:pointer}

/* cta band */
.cta-band{position:relative;color:#fff;padding:5rem 0;text-align:center;background-image:linear-gradient(rgba(15,23,42,.7),rgba(15,23,42,.7)),url(../assets/3.jpg);background-size:cover;background-position:center}
.cta-inner{max-width:42rem;margin:0 auto}
.cta-band h2{font-size:clamp(1.6rem,3vw,2.3rem);font-weight:800}
.cta-band p{margin:1rem 0 1.8rem;font-size:1.1rem;color:rgba(255,255,255,.92)}
.cta-links{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap}

/* footer */
.footer{background:#0f172a;color:#cbd5e1;padding:1.6rem 0;font-size:.9rem}
.footer-inner{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:1rem}
.footer-links a{margin-left:1.2rem;color:#cbd5e1}
.footer-links a:hover{color:#fff}

/* faq */
.faq-list{max-width:48rem;margin:0 auto;display:flex;flex-direction:column;gap:.8rem}
.faq-item{background:#fff;border:1px solid var(--border);border-radius:14px;box-shadow:var(--shadow);overflow:hidden}
.faq-item summary{list-style:none;cursor:pointer;padding:1.1rem 1.3rem;font-weight:600;display:flex;align-items:center;justify-content:space-between;gap:1rem;color:var(--ink)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-size:1.6rem;line-height:1;color:var(--indigo);font-weight:700;transition:.2s}
.faq-item[open] summary::after{content:"\2212"}
.faq-item .faq-body{padding:0 1.3rem 1.2rem;color:var(--muted);font-size:.97rem}

/* responsive */
@media (max-width:900px){
  .hero-inner{grid-template-columns:1fr}
  .grid-3{grid-template-columns:1fr 1fr}
}
@media (max-width:680px){
  .nav-links{position:absolute;top:100%;right:0;left:0;flex-direction:column;background:#fff;padding:1.2rem 4%;gap:.4rem;border-bottom:1px solid var(--border);display:none}
  .nav-links.open{display:flex}
  .nav-links a{padding:.5rem 0}
  .nav-toggle{display:flex}
  .grid-3{grid-template-columns:1fr}
  .hero{padding:3rem 0 3.5rem}
}