:root{--bg:#0b1220;--bg2:#0f1a2e;--card:#14223a;--tx:#e6edf7;--mut:#9fb0c7;--ac:#22d3ee;--ac2:#3b82f6;--bd:#1f3050}
*{box-sizing:border-box;margin:0}
html{scroll-behavior:smooth}
body{font-family:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;background:var(--bg);color:var(--tx);line-height:1.6}
a{color:var(--ac);text-decoration:none}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}
.nav{position:sticky;top:0;z-index:10;background:rgba(11,18,32,.88);backdrop-filter:blur(8px);border-bottom:1px solid var(--bd)}
.nav-in{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center;gap:10px;color:var(--tx);font-weight:700;font-size:1.2rem}
.brand b{color:var(--ac)}
nav{display:flex;align-items:center;gap:22px}
nav a{color:var(--mut);font-weight:500}
nav a:hover{color:var(--tx)}
.burger{display:none;background:none;border:0;color:var(--tx);font-size:1.6rem;cursor:pointer}
.btn{display:inline-block;background:linear-gradient(135deg,var(--ac),var(--ac2));color:#04111f;font-weight:700;padding:13px 24px;border-radius:10px;border:0;cursor:pointer;font-size:1rem;transition:transform .15s}
.btn:hover{transform:translateY(-2px)}
.btn-sm{padding:8px 16px;color:#04111f!important}
.btn-ghost{background:none;color:var(--tx);border:1px solid var(--bd)}
.hero{padding:96px 0 84px;background:radial-gradient(900px 400px at 80% -10%,rgba(34,211,238,.18),transparent),radial-gradient(700px 400px at 0 0,rgba(59,130,246,.15),transparent)}
.tag{color:var(--ac);font-weight:600;letter-spacing:.06em;text-transform:uppercase;font-size:.85rem;margin-bottom:14px}
h1{font-size:clamp(2rem,5vw,3.4rem);line-height:1.15;max-width:760px}
.grad{background:linear-gradient(90deg,var(--ac),var(--ac2));-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{color:var(--mut);font-size:1.15rem;max-width:620px;margin:20px 0 30px}
.cta{display:flex;gap:14px;flex-wrap:wrap}
.sec{padding:80px 0}
.alt{background:var(--bg2)}
h2{font-size:clamp(1.6rem,3.5vw,2.2rem);margin-bottom:8px}
.sub{color:var(--mut);margin-bottom:34px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(290px,1fr));gap:20px}
.card{background:var(--card);border:1px solid var(--bd);border-radius:14px;padding:26px;transition:border-color .2s,transform .2s}
.card:hover{border-color:var(--ac);transform:translateY(-3px)}
.ico{font-size:1.8rem;margin-bottom:10px}
.card h3{margin-bottom:6px}
.card p{color:var(--mut)}
.steps{list-style:none;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:20px;margin-top:30px}
.steps li{background:var(--card);border:1px solid var(--bd);border-radius:14px;padding:22px}
.steps b{display:block;color:var(--ac);margin-bottom:6px}
.steps span{color:var(--mut)}
.update{display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;background:linear-gradient(135deg,rgba(34,211,238,.1),rgba(59,130,246,.12));border:1px solid var(--bd);border-radius:18px;padding:38px}
.update p{color:var(--mut);max-width:520px}
.contact{display:grid;grid-template-columns:1fr 1fr;gap:44px}
.info{list-style:none;padding:0;display:grid;gap:12px;font-size:1.05rem}
form{display:grid;gap:14px}
label{display:grid;gap:6px;color:var(--mut);font-size:.9rem}
input,textarea{background:var(--bg);border:1px solid var(--bd);border-radius:10px;padding:12px;color:var(--tx);font:inherit}
input:focus,textarea:focus{outline:2px solid var(--ac);border-color:transparent}
.hint{color:#f87171;font-size:.9rem;min-height:1.2em}
footer{border-top:1px solid var(--bd);padding:26px 0;color:var(--mut);font-size:.9rem}
.foot{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}
.wa{position:fixed;right:18px;bottom:18px;width:54px;height:54px;border-radius:50%;background:#25d366;display:grid;place-items:center;font-size:1.6rem;box-shadow:0 6px 20px rgba(0,0,0,.4);z-index:20}
@media(max-width:760px){
  .burger{display:block}
  nav{display:none;position:absolute;top:64px;left:0;right:0;flex-direction:column;align-items:flex-start;background:var(--bg);padding:18px 20px;border-bottom:1px solid var(--bd)}
  nav.open{display:flex}
  .contact{grid-template-columns:1fr}
  .hero{padding:64px 0}.sec{padding:56px 0}
}

/* ---- mejoras de diseño ---- */
.hero-in{display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center}
.hero-img{width:100%;height:auto;animation:float 6s ease-in-out infinite}
@keyframes float{50%{transform:translateY(-12px)}}
.hero{position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(var(--bd) 1px,transparent 1px),linear-gradient(90deg,var(--bd) 1px,transparent 1px);background-size:48px 48px;opacity:.25;mask-image:radial-gradient(circle at 70% 40%,#000,transparent 70%);-webkit-mask-image:radial-gradient(circle at 70% 40%,#000,transparent 70%)}
.hero-in{position:relative}
.stats{background:var(--bg2);border-block:1px solid var(--bd)}
.stats-in{display:grid;grid-template-columns:repeat(4,1fr);text-align:center;padding-block:26px;gap:12px}
.stats b{display:block;font-size:1.7rem;background:linear-gradient(90deg,var(--ac),var(--ac2));-webkit-background-clip:text;background-clip:text;color:transparent}
.stats span{color:var(--mut);font-size:.9rem}
.ico{width:52px;height:52px;border-radius:14px;display:grid;place-items:center;background:linear-gradient(135deg,rgba(34,211,238,.18),rgba(59,130,246,.18));margin-bottom:14px}
.ico svg{width:26px;height:26px;fill:none;stroke:var(--ac);stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.card{position:relative;overflow:hidden}
.card::after{content:"";position:absolute;inset:0 0 auto 0;height:3px;background:linear-gradient(90deg,var(--ac),var(--ac2));transform:scaleX(0);transform-origin:left;transition:transform .3s}
.card:hover::after{transform:scaleX(1)}
.update{display:grid;grid-template-columns:200px 1fr auto;align-items:center}
.upd-img{width:100%;max-width:200px}
.reveal{opacity:0;transform:translateY(24px);transition:opacity .6s,transform .6s}
.reveal.in{opacity:1;transform:none}
@media(max-width:860px){
  .hero-in{grid-template-columns:1fr}
  .hero-img{max-width:440px;margin:0 auto}
  .stats-in{grid-template-columns:repeat(2,1fr)}
  .update{grid-template-columns:1fr;justify-items:start}
}

/* ---- sección sistemas ---- */
.chip{display:inline-block;font-size:.75rem;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:var(--ac);background:rgba(34,211,238,.12);border:1px solid rgba(34,211,238,.3);padding:3px 10px;border-radius:999px;margin-bottom:10px}
.sys{display:grid;grid-template-columns:.9fr 1.1fr;gap:36px;align-items:center;background:linear-gradient(135deg,rgba(34,211,238,.09),rgba(59,130,246,.12));border:1px solid var(--bd);border-radius:20px;padding:34px;margin-bottom:22px}
.sys img{width:100%;height:auto}
.sys h3{font-size:1.9rem;margin-bottom:8px}
.sys p{color:var(--mut)}
.ticks{list-style:none;padding:0;margin:16px 0 22px;display:grid;gap:8px}
.ticks li{padding-left:26px;position:relative}
.ticks li::before{content:"✓";position:absolute;left:0;color:var(--ac);font-weight:700}
.sys-grid{grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}
.sys-card h3{margin-bottom:6px}
.link{display:inline-block;margin-top:12px;font-weight:600}
.sys-next{border-style:dashed}
@media(max-width:860px){.sys{grid-template-columns:1fr;padding:24px}.sys h3{font-size:1.5rem}}

/* ---- ronda de mejoras de diseño ---- */
:root[data-theme="light"]{--bg:#f5f8fd;--bg2:#e9f0f9;--card:#ffffff;--tx:#0b1220;--mut:#44566e;--bd:#d3deec;--ac:#0891b2;--ac2:#2563eb}
:root[data-theme="light"] .nav{background:rgba(245,248,253,.9)}
:root[data-theme="light"] .btn{color:#fff}
:root[data-theme="light"] .btn-ghost{color:var(--tx)}
:root[data-theme="light"] .btn-sm{color:#fff!important}
:root[data-theme="light"] nav{background:transparent}
:root[data-theme="light"] .wa{box-shadow:0 6px 20px rgba(0,0,0,.2)}
.nav,.card,.steps li,.sys,.update,input,textarea,.alt,.stats,footer{transition:background-color .3s,border-color .3s,color .3s}
nav{background:transparent}
.progress{position:fixed;top:0;left:0;height:3px;width:0;z-index:30;background:linear-gradient(90deg,var(--ac),var(--ac2))}
.theme{background:none;border:1px solid var(--bd);color:var(--tx);width:36px;height:36px;border-radius:50%;cursor:pointer;font-size:1.1rem;display:grid;place-items:center}
.theme:hover{border-color:var(--ac);color:var(--ac)}
.nav.scrolled{box-shadow:0 8px 24px rgba(0,0,0,.25)}
.nav.scrolled .nav-in{height:56px}
.nav-in{transition:height .25s}
/* hero: manchas de color animadas */
.blob{position:absolute;border-radius:50%;filter:blur(70px);opacity:.35;pointer-events:none;animation:drift 16s ease-in-out infinite}
.b1{width:360px;height:360px;background:var(--ac);top:-120px;right:8%}
.b2{width:300px;height:300px;background:var(--ac2);bottom:-120px;left:-60px;animation-delay:-8s}
@keyframes drift{50%{transform:translate(40px,30px) scale(1.1)}}
#rot{display:inline-block;transition:opacity .35s,transform .35s}
#rot.out{opacity:0;transform:translateY(8px)}
/* franja de tecnologías */
.tech{padding:34px 0;border-bottom:1px solid var(--bd)}
.tech-t{text-align:center;color:var(--mut);font-size:.8rem;text-transform:uppercase;letter-spacing:.1em;margin-bottom:14px}
.tech-l{list-style:none;padding:0;display:flex;flex-wrap:wrap;justify-content:center;gap:10px}
.tech-l li{padding:7px 16px;border:1px solid var(--bd);border-radius:999px;background:var(--card);font-weight:600;font-size:.9rem;transition:transform .2s,border-color .2s,color .2s}
.tech-l li:hover{transform:translateY(-3px);border-color:var(--ac);color:var(--ac)}
/* tarjetas con brillo que sigue al mouse */
.card,.steps li{--mx:50%;--my:50%}
.card::before,.steps li::before{content:"";position:absolute;inset:0;background:radial-gradient(260px circle at var(--mx) var(--my),rgba(34,211,238,.16),transparent 60%);opacity:0;transition:opacity .25s;pointer-events:none}
.card:hover::before,.steps li:hover::before{opacity:1}
.steps li{position:relative;overflow:hidden}
.steps{counter-reset:s}
.steps li b{font-size:1.1rem}
/* FAQ */
.faq-w{max-width:780px}
details{background:var(--card);border:1px solid var(--bd);border-radius:12px;margin-bottom:12px;overflow:hidden;transition:border-color .2s}
details[open]{border-color:var(--ac)}
summary{cursor:pointer;padding:16px 20px;font-weight:600;list-style:none;display:flex;justify-content:space-between;gap:16px}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";color:var(--ac);font-size:1.4rem;line-height:1;transition:transform .25s}
details[open] summary::after{transform:rotate(45deg)}
details p{padding:0 20px 18px;color:var(--mut)}
/* detalles */
::selection{background:var(--ac);color:#04111f}
:focus-visible{outline:2px solid var(--ac);outline-offset:3px;border-radius:6px}
.btn-ghost:hover{border-color:var(--ac);color:var(--ac)}
.wa{animation:pulse 2.8s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(37,211,102,.55)}70%,100%{box-shadow:0 0 0 16px rgba(37,211,102,0)}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}.reveal{opacity:1;transform:none}}