:root{
  --bg:#0b0d14;--bg2:#10131d;--card:#141826;--line:#252a3b;--text:#e8eaf2;--muted:#9aa2b8;
  --a:#6366f1;--b:#22d3ee;--grad:linear-gradient(120deg,#818cf8,#22d3ee);--r:18px;
}
:root[data-theme="light"]{
  --bg:#f7f8fc;--bg2:#eef0f8;--card:#fff;--line:#dde1ee;--text:#12141f;--muted:#586079;
}
*{box-sizing:border-box;margin:0}
html{scroll-behavior:smooth;scroll-padding-top:80px}
body{background:var(--bg);color:var(--text);font:16px/1.65 Inter,system-ui,sans-serif;-webkit-font-smoothing:antialiased;overflow-x:hidden}
h1,h2,h3,h4,.brand{font-family:"Space Grotesk",Inter,sans-serif;line-height:1.12;letter-spacing:-.02em}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none;padding:0}
.wrap{width:min(1120px,100% - 40px);margin-inline:auto}
.narrow{width:min(760px,100% - 40px)}
.muted{color:var(--muted)}
.grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}

/* nav */
.nav{position:fixed;inset:0 0 auto;z-index:50;transition:.3s}
.nav.scrolled{background:color-mix(in srgb,var(--bg) 82%,transparent);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.nav-in{display:flex;align-items:center;gap:16px;height:68px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1.15rem}
.links{display:flex;align-items:center;gap:26px;margin-left:auto;font-size:.95rem;color:var(--muted)}
.links a:hover{color:var(--text)}
.theme,.burger{background:none;border:1px solid var(--line);color:var(--text);border-radius:10px;width:38px;height:38px;cursor:pointer;font-size:1.1rem}
.burger{display:none;position:relative}
.burger i{position:absolute;left:10px;right:10px;height:2px;background:currentColor;transition:.25s}
.burger i:first-child{top:14px}.burger i:last-child{top:22px}
.burger[aria-expanded=true] i:first-child{top:18px;transform:rotate(45deg)}
.burger[aria-expanded=true] i:last-child{top:18px;transform:rotate(-45deg)}

/* buttons */
.btn{display:inline-block;padding:13px 24px;border-radius:12px;border:0;background:var(--grad);color:#07101a;font-weight:600;font-size:.97rem;cursor:pointer;transition:transform .2s,box-shadow .2s;box-shadow:0 8px 28px -10px var(--a)}
.btn:hover{transform:translateY(-2px);box-shadow:0 14px 34px -10px var(--a)}
.btn-sm{padding:9px 18px;color:#07101a!important}
.btn-ghost{background:transparent;color:var(--text);border:1px solid var(--line);box-shadow:none}
.btn-ghost:hover{border-color:var(--b);box-shadow:none}

/* hero */
.hero{position:relative;padding:170px 0 80px;overflow:hidden}
.grid-bg{position:absolute;inset:0;background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);background-size:56px 56px;opacity:.35;mask-image:radial-gradient(ellipse at 50% 30%,#000 20%,transparent 70%)}
.glow{position:absolute;border-radius:50%;filter:blur(110px);opacity:.38;animation:float 14s ease-in-out infinite}
.g1{width:480px;height:480px;background:var(--a);top:-140px;left:-100px}
.g2{width:420px;height:420px;background:var(--b);top:40px;right:-120px;animation-delay:-6s}
@keyframes float{50%{transform:translate(40px,30px)}}
.hero-in{position:relative;text-align:center}
.pill{display:inline-flex;align-items:center;gap:8px;padding:7px 16px;border:1px solid var(--line);border-radius:99px;font-size:.85rem;color:var(--muted);background:color-mix(in srgb,var(--card) 70%,transparent)}
.dot{width:8px;height:8px;border-radius:50%;background:var(--b);box-shadow:0 0 10px var(--b)}
h1{font-size:clamp(2.4rem,6.4vw,4.6rem);margin:24px auto 22px;max-width:15em;font-weight:700}
.lead{max-width:640px;margin:0 auto;color:var(--muted);font-size:1.12rem}
.cta{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin:34px 0 60px}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.stats li{background:var(--card);padding:24px 12px}
.stats b{display:block;font:700 2rem "Space Grotesk";background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.stats span{font-size:.85rem;color:var(--muted)}

/* marquee */
.marquee{border-block:1px solid var(--line);overflow:hidden;background:var(--bg2);padding:18px 0}
.track{display:flex;gap:48px;width:max-content;animation:scroll 40s linear infinite;color:var(--muted);font:600 1rem "Space Grotesk"}
@keyframes scroll{to{transform:translateX(-50%)}}

/* sections */
.sec{padding:110px 0}
.alt{background:color-mix(in srgb,var(--bg2) 82%,transparent)}

/* fondo con parallax */
.bg-parallax{position:fixed;inset:0;z-index:-1;overflow:hidden;pointer-events:none;
  mask-image:linear-gradient(#000 35%,transparent 100%);-webkit-mask-image:linear-gradient(#000 35%,transparent 100%)}
.bg-parallax img{position:absolute;left:0;top:-18%;width:100%;height:136%;object-fit:cover;opacity:.3;
  will-change:transform;transform:translate3d(0,var(--py,0px),0) scale(var(--ps,1.06))}
@media (prefers-reduced-motion:reduce){.bg-parallax img{transform:scale(1.06)}}
.eyebrow{color:var(--b);font-weight:600;font-size:.85rem;text-transform:uppercase;letter-spacing:.14em;margin-bottom:14px}
h2{font-size:clamp(1.9rem,4vw,2.9rem);max-width:18em;margin-bottom:18px;font-weight:700}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px;margin-top:50px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:30px 26px;transition:.3s;position:relative;overflow:hidden}
.card:hover{transform:translateY(-6px);border-color:var(--a);box-shadow:0 20px 50px -25px var(--a)}
.card h3{font-size:1.25rem;margin:18px 0 10px}
.card p{color:var(--muted);font-size:.95rem}
.card ul{margin-top:16px;font-size:.88rem;color:var(--muted)}
.card li{padding:5px 0 5px 22px;position:relative}
.card li::before{content:"✓";position:absolute;left:0;color:var(--b)}
.ico{width:50px;height:50px;border-radius:14px;display:grid;place-items:center;background:color-mix(in srgb,var(--a) 18%,transparent)}
.ico svg{width:26px;height:26px;fill:none;stroke:var(--b);stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}

/* migration */
.split{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:center}
.checks{margin-top:26px}
.checks li{padding:8px 0 8px 32px;position:relative}
.checks li::before{content:"✓";position:absolute;left:0;top:9px;width:22px;height:22px;border-radius:50%;background:var(--grad);color:#07101a;font-size:.8rem;display:grid;place-items:center;font-weight:700}
.flow{display:grid;gap:14px;position:relative}
.step{display:flex;gap:18px;align-items:center;background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:20px 22px}
.step b{flex:none;width:42px;height:42px;border-radius:12px;display:grid;place-items:center;background:var(--grad);color:#07101a;font:700 1.1rem "Space Grotesk"}
.step h4{font-size:1.05rem}.step p{color:var(--muted);font-size:.9rem}

/* timeline */
.timeline{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:28px;margin-top:50px}
.timeline li{border-top:2px solid var(--line);padding-top:22px;transition:.3s}
.timeline li:hover{border-color:var(--b)}
.timeline span{font:700 .9rem "Space Grotesk";color:var(--b)}
.timeline h3{font-size:1.35rem;margin:8px 0}
.timeline p{color:var(--muted);font-size:.95rem}

/* faq */
.faq{margin-top:34px;display:grid;gap:12px}
details{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:4px 22px}
summary{cursor:pointer;padding:16px 0;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(--b);font-size:1.4rem;line-height:1;transition:.2s}
details[open] summary::after{transform:rotate(45deg)}
details p{color:var(--muted);padding-bottom:18px}

/* contact */
.contact{display:grid;grid-template-columns:1fr 1fr;gap:50px;padding:50px;border-radius:26px;border:1px solid var(--line);background:linear-gradient(145deg,color-mix(in srgb,var(--a) 14%,var(--card)),var(--card))}
.direct{margin-top:24px;line-height:2}
.direct a{color:var(--b);font-weight:600}
form{display:grid;gap:14px}
label{display:grid;gap:6px;font-size:.85rem;color:var(--muted);font-weight:500}
input,select,textarea{font:inherit;color:var(--text);background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:11px 14px;width:100%}
input:focus,select:focus,textarea:focus{outline:2px solid var(--a);outline-offset:1px}
.note{font-size:.88rem;color:var(--b);min-height:1.2em}

.foot{border-top:1px solid var(--line);padding:30px 0}
.foot-in{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap}
.foot small{color:var(--muted)}

/* reveal */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s,transform .7s}
.reveal.in{opacity:1;transform:none}
.cards .reveal:nth-child(2),.timeline .reveal:nth-child(2){transition-delay:.08s}
.cards .reveal:nth-child(3),.timeline .reveal:nth-child(3){transition-delay:.16s}
.cards .reveal:nth-child(4),.timeline .reveal:nth-child(4){transition-delay:.24s}

@media(max-width:860px){
  .burger{display:block}
  .links{position:fixed;inset:68px 0 auto;flex-direction:column;align-items:stretch;gap:0;background:var(--bg);border-bottom:1px solid var(--line);padding:10px 20px 20px;transform:translateY(-130%);transition:.3s;margin:0}
  .links.open{transform:none}
  .links a{padding:13px 0;border-bottom:1px solid var(--line)}
  .links .btn{margin-top:14px;text-align:center}
  .theme{margin-left:auto}
  .stats{grid-template-columns:repeat(2,1fr)}
  .split,.contact{grid-template-columns:1fr;gap:36px}
  .contact{padding:30px 22px}
  .sec{padding:76px 0}
  .hero{padding-top:130px}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}