/* AI Alarcón Ingenieros — estilos (mobile-first, sin dependencias) */
@font-face{font-family:"Montserrat";src:url("../fonts/montserrat-700.woff2") format("woff2");font-weight:700;font-style:normal;font-display:swap}
@font-face{font-family:"Montserrat";src:url("../fonts/montserrat-500.woff2") format("woff2");font-weight:500;font-style:normal;font-display:swap}
:root{
  --navy-950:#090d12;--navy-900:#0e131a;--navy-800:#141b25;--navy-700:#1d2733;--navy-600:#2a3646;
  --silver-100:#eef1f5;--silver-300:#c9d1db;--silver-500:#8e9aaa;
  --cyan:#62e3ea;--cyan-soft:rgba(98,227,234,.14);--teal:#0a6c75;--teal-700:#075a62;
  --ink:#16202b;--ink-2:#46525f;--bg:#ffffff;--bg-alt:#f3f6f9;--line:#dde3ea;
  --wa:#25d366;--wa-ink:#05301a;--wa-hover:#1fbe5b;
  --vera-bg:#f7f5ef;--vera-ink:#22251f;--vera-green:#3d5a1a;--vera-green-2:#2f4713;
  --r:16px;--r-sm:10px;--shadow:0 10px 30px rgba(9,13,18,.10);--shadow-lg:0 24px 60px rgba(9,13,18,.28);
  --head:"Montserrat",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  --body:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --hh:64px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--hh) + 12px);-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--body);font-size:1rem;line-height:1.6;color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased}
img,video,svg{display:block;max-width:100%}
img{height:auto}
a{color:var(--teal)}
h1,h2,h3{font-family:var(--head);font-weight:700;line-height:1.15;margin:0 0 .6em;letter-spacing:-.01em}
h2{font-size:clamp(1.65rem,1.2rem + 2.2vw,2.6rem)}
h3{font-size:1.08rem}
p{margin:0 0 1em}
ul{margin:0;padding:0;list-style:none}
.i{width:1.2em;height:1.2em;flex:none}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:absolute;left:-999px;top:8px;background:#fff;color:var(--ink);padding:8px 14px;border-radius:8px;z-index:100}
.skip:focus{left:8px}
:focus-visible{outline:3px solid var(--cyan);outline-offset:3px;border-radius:6px}
.center{text-align:center;margin-top:2rem}
.hide-sm{display:none}

/* Botones */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.55em;font-family:var(--head);font-weight:700;font-size:.95rem;text-decoration:none;border-radius:999px;padding:.8em 1.35em;border:2px solid transparent;transition:transform .2s ease,background-color .2s ease,box-shadow .2s ease,color .2s;cursor:pointer;line-height:1.2;text-align:center}
.btn:hover{transform:translateY(-2px)}
.btn-lg{font-size:1rem;padding:.95em 1.6em}
.btn-sm{font-size:.85rem;padding:.55em 1em}
.btn-wa{background:var(--wa);color:var(--wa-ink);box-shadow:0 8px 22px rgba(37,211,102,.28)}
.btn-wa:hover{background:var(--wa-hover)}
.btn-ghost{color:var(--silver-100);border-color:rgba(238,241,245,.35);background:rgba(255,255,255,.04)}
.btn-ghost:hover{border-color:var(--cyan);color:#fff}
.btn-outline{color:var(--teal-700);border-color:var(--teal);background:#fff}
.btn-outline:hover{background:var(--teal);color:#fff}
.btn-vera{background:var(--vera-green);color:#fff}
.btn-vera:hover{background:var(--vera-green-2)}
.btn-vera-ghost{color:var(--vera-green-2);border-color:var(--vera-green);background:transparent;font-weight:500}
.cta-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:1.5rem}

/* Header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(14,19,26,.92);backdrop-filter:saturate(140%) blur(10px);-webkit-backdrop-filter:saturate(140%) blur(10px);border-bottom:1px solid rgba(255,255,255,.06)}
.header-in{display:flex;align-items:center;justify-content:space-between;height:var(--hh)}
.brand img{height:46px;width:auto}
.nav-toggle{width:44px;height:44px;display:flex;flex-direction:column;justify-content:center;gap:5px;align-items:center;background:transparent;border:0;cursor:pointer;border-radius:10px}
.nav-toggle span{width:22px;height:2px;background:var(--silver-100);border-radius:2px;transition:transform .25s,opacity .25s}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.nav{position:absolute;left:0;right:0;top:var(--hh);background:var(--navy-900);display:flex;flex-direction:column;padding:8px 20px 20px;gap:2px;border-bottom:1px solid rgba(255,255,255,.08);transform-origin:top;transform:scaleY(0);opacity:0;visibility:hidden;transition:transform .25s ease,opacity .2s ease,visibility .25s}
.nav.open{transform:none;opacity:1;visibility:visible}
.nav a{color:var(--silver-100);text-decoration:none;font-family:var(--head);font-weight:500;font-size:1rem;padding:12px 4px;border-bottom:1px solid rgba(255,255,255,.06)}
.nav a:hover{color:var(--cyan)}
.nav a.btn{margin-top:12px;border-bottom:0;color:var(--wa-ink);padding:.8em 1.2em}
.no-js .nav{position:static;transform:none;opacity:1;visibility:visible}

/* Hero */
.hero{position:relative;overflow:hidden;background:radial-gradient(1200px 600px at 85% -10%,#24303f 0%,transparent 60%),linear-gradient(180deg,var(--navy-900),var(--navy-950));color:var(--silver-100);padding:48px 0 64px}
.hero-bg{position:absolute;inset:0;pointer-events:none;opacity:.55;
  background-image:
   linear-gradient(rgba(98,227,234,.06) 1px,transparent 1px),
   linear-gradient(90deg,rgba(98,227,234,.06) 1px,transparent 1px);
  background-size:48px 48px;mask-image:radial-gradient(ellipse at 70% 30%,#000 10%,transparent 70%);-webkit-mask-image:radial-gradient(ellipse at 70% 30%,#000 10%,transparent 70%)}
.hero-bg::after{content:"";position:absolute;width:420px;height:420px;right:-80px;top:-60px;border-radius:50%;background:radial-gradient(circle,rgba(98,227,234,.22),transparent 65%);filter:blur(10px);animation:glow 8s ease-in-out infinite alternate}
@keyframes glow{from{transform:translate(0,0) scale(1);opacity:.7}to{transform:translate(-40px,30px) scale(1.15);opacity:1}}
.hero-in{position:relative;display:grid;gap:40px}
.eyebrow{display:inline-flex;align-items:center;gap:.6em;font-family:var(--head);font-weight:500;font-size:.82rem;letter-spacing:.06em;text-transform:uppercase;color:var(--silver-300);background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);padding:.45em .9em;border-radius:999px;margin-bottom:1.3rem}
.dot{width:8px;height:8px;border-radius:50%;background:var(--cyan);box-shadow:0 0 0 0 rgba(98,227,234,.6);animation:pulse 2.2s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(98,227,234,.55)}70%{box-shadow:0 0 0 10px rgba(98,227,234,0)}100%{box-shadow:0 0 0 0 rgba(98,227,234,0)}}
.hero h1{font-size:clamp(2rem,1.35rem + 3vw,3.3rem);color:#fff;margin-bottom:.5em}
.grad{background:linear-gradient(100deg,#ffffff 0%,#c9d1db 35%,var(--cyan) 100%);-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{font-size:1.06rem;color:var(--silver-300);max-width:40em}
.lead strong{color:#fff}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:1.6rem}
.chips li{font-size:.85rem;color:var(--silver-300);padding:.35em .85em;border-radius:999px;border:1px solid rgba(98,227,234,.28);background:var(--cyan-soft)}
.hero-media{position:relative;margin:0 auto;max-width:360px;width:100%}
.hero-photo{border-radius:24px;overflow:hidden;box-shadow:var(--shadow-lg);border:1px solid rgba(255,255,255,.12);aspect-ratio:3/4;background:var(--navy-700)}
.hero-photo img{width:100%;height:100%;object-fit:cover}
.hero-badge{position:absolute;left:-10px;bottom:-22px;display:flex;flex-direction:column;gap:2px;background:rgba(20,27,37,.94);border:1px solid rgba(98,227,234,.35);border-radius:14px;padding:12px 16px;text-decoration:none;color:#fff;box-shadow:var(--shadow-lg);max-width:250px;animation:float 5s ease-in-out infinite}
.hb-k{font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;color:var(--cyan);font-family:var(--head);font-weight:700}
.hb-t{font-family:var(--head);font-weight:700;font-size:.92rem;line-height:1.25}
.hb-n{display:flex;align-items:center;gap:6px;font-size:.85rem;color:var(--silver-300)}
.hb-n .i{color:#ff6b81;width:1em;height:1em}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-6px)}}

/* Secciones */
.section{padding:72px 0}
.section.alt{background:var(--bg-alt)}
.kicker{font-family:var(--head);font-weight:700;font-size:.78rem;letter-spacing:.14em;text-transform:uppercase;color:var(--teal);margin-bottom:.8rem;display:flex;align-items:center;gap:.6em}
.kicker::before{content:"";width:26px;height:2px;background:currentColor;border-radius:2px}
.head-center .kicker{justify-content:center}
.kicker.on-dark{color:var(--cyan)}
.accent{color:var(--teal)}
.sub{color:var(--ink-2);font-size:1.05rem;max-width:42em}
.sub.on-dark{color:var(--silver-300)}
.sub.on-dark a{color:var(--cyan)}
.head-center{text-align:center;margin:0 auto 2.5rem;max-width:760px}
.head-center .sub{margin-left:auto;margin-right:auto}
.split{display:grid;gap:40px;align-items:center}
.cards{display:grid;gap:14px;margin-top:1.6rem}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:20px;transition:transform .25s,box-shadow .25s,border-color .25s}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#b9e7ea}
.card p{color:var(--ink-2);margin:0;font-size:.95rem}
.card h3{margin-bottom:.35em}
.ic{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;background:linear-gradient(140deg,var(--navy-800),var(--navy-600));color:var(--cyan);margin-bottom:12px}
.ic .i{width:24px;height:24px}
.split-media{position:relative;display:grid;grid-template-columns:1fr;gap:14px}
.photo{margin:0;position:relative;border-radius:var(--r);overflow:hidden;box-shadow:var(--shadow);background:var(--navy-700)}
.photo img{width:100%;height:100%;object-fit:cover}
.photo.tall{aspect-ratio:4/5}
.photo.wide{aspect-ratio:4/3}
.photo.small{display:none}
.photo figcaption{position:absolute;left:12px;bottom:12px;right:12px;font-size:.8rem;color:#fff;background:rgba(9,13,18,.72);padding:6px 10px;border-radius:8px;width:fit-content}
.checks{display:grid;gap:12px;margin-top:1.4rem}
.checks li{position:relative;padding-left:32px;color:var(--ink-2)}
.checks li strong{color:var(--ink)}
.checks li::before{content:"";position:absolute;left:0;top:.18em;width:20px;height:20px;border-radius:50%;background:var(--teal) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 12 4 4 8-8'/%3E%3C/svg%3E") center/12px no-repeat}
.checks.light li{color:var(--silver-300)}
.checks.light li::before{background-color:#13838d}

/* Equipos */
.offer{display:grid;gap:18px;margin-bottom:2.2rem}
.offer-card{border-radius:20px;padding:26px;border:1px solid var(--line);background:#fff;display:flex;flex-direction:column}
.offer-card.dark{background:linear-gradient(160deg,var(--navy-800),var(--navy-950));color:#fff;border-color:transparent}
.offer-card h3{font-size:1.3rem}
.offer-card .btn{margin-top:auto;align-self:flex-start}
.offer-card .checks{margin:.4rem 0 1.2rem}
.note{font-size:.95rem;font-weight:600;color:var(--teal-700);margin-bottom:1.2rem}
.offer-card.dark .note{color:var(--cyan)}
.tag{display:inline-block;align-self:flex-start;font-family:var(--head);font-weight:700;font-size:.75rem;letter-spacing:.12em;text-transform:uppercase;padding:.35em .8em;border-radius:999px;background:var(--cyan-soft);color:var(--cyan);border:1px solid rgba(98,227,234,.35);margin-bottom:1rem}
.tag-teal{background:#e3f4f5;color:var(--teal-700);border-color:#b7e1e4}
.products{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.product{background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;display:flex;flex-direction:column;transition:transform .25s,box-shadow .25s}
.product:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.product img{width:100%;aspect-ratio:4/3;object-fit:cover;background:#eef1f4}
.product div{padding:12px 14px 16px}
.product h3{font-size:.95rem;margin-bottom:.25em}
.product p{font-size:.85rem;color:var(--ink-2);margin:0}

/* VERA */
.vera{background:var(--vera-bg);color:var(--vera-ink);border-top:1px solid #e9e5d9;border-bottom:1px solid #e9e5d9}
.vera h2{font-family:Georgia,"Times New Roman",serif;font-weight:700;letter-spacing:-.02em}
.vera h2 em{color:var(--vera-green);font-style:normal}
.vera .sub,.vera .checks li{color:#4a4d44}
.vera .checks li strong{color:var(--vera-ink)}
.vera-k{color:var(--vera-green)}
.vera-checks li::before{background-color:var(--vera-green)}
.vera-media{margin:0;border-radius:20px;overflow:hidden;background:#fff;box-shadow:0 20px 50px rgba(60,55,30,.16);border:1px solid #e6e1d3}
.vera-video{width:100%;height:auto;aspect-ratio:16/9;object-fit:cover}
.vera-media figcaption{font-size:.88rem;color:#5b5e53;padding:12px 16px;font-style:italic}

/* Reels */
.dark-sec{background:linear-gradient(180deg,var(--navy-900),var(--navy-950));color:#fff}
.dark-sec h2{color:#fff}
.reels{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.reel{display:flex;flex-direction:column;text-decoration:none;color:#fff;background:var(--navy-800);border:1px solid rgba(255,255,255,.08);border-radius:var(--r);overflow:hidden;transition:transform .25s,border-color .25s,box-shadow .25s}
.reel:hover{transform:translateY(-4px);border-color:rgba(98,227,234,.5);box-shadow:0 18px 40px rgba(0,0,0,.35)}
.reel-img{position:relative;aspect-ratio:4/5;overflow:hidden;background:var(--navy-700)}
.reel-img img{width:100%;height:100%;object-fit:cover;object-position:50% 25%;transition:transform .5s ease}
.reel:hover .reel-img img{transform:scale(1.05)}
.play{position:absolute;inset:auto auto 12px 12px;width:42px;height:42px;border-radius:50%;display:grid;place-items:center;background:rgba(9,13,18,.65);border:1px solid rgba(255,255,255,.35);color:#fff;backdrop-filter:blur(4px)}
.play .i{width:18px;height:18px;margin-left:2px}
.reel-body{padding:14px 14px 18px;display:flex;flex-direction:column;gap:6px;flex:1}
.reel-body h3{font-size:.95rem;margin:0}
.reel-body p{color:var(--silver-300);font-size:.92rem;margin:0}
.link{display:inline-flex;align-items:center;gap:6px;color:var(--cyan);font-size:.85rem;font-weight:600;margin-top:auto}
.link .i{width:1em;height:1em;transition:transform .2s}
.reel:hover .link .i{transform:translateX(4px)}
.pill{display:inline-flex;align-items:center;gap:6px;align-self:flex-start;font-size:.78rem;font-weight:700;font-family:var(--head);color:var(--wa-ink);background:var(--cyan);padding:.3em .75em;border-radius:999px}
.pill .i{width:1em;height:1em;color:#b3123a}
.reel.featured{grid-column:1/-1}
.reel.featured h3{font-size:1.25rem}

/* Por qué */
.why{display:grid;gap:14px}
.why-item{border:1px solid var(--line);border-radius:var(--r);padding:22px;background:linear-gradient(180deg,#fff,var(--bg-alt))}
.why-item p{color:var(--ink-2);margin:0;font-size:.95rem}
.why-item h3{margin-bottom:.35em}
.big{font-family:var(--head);font-weight:700;font-size:2.6rem;line-height:1;margin-bottom:10px;background:linear-gradient(100deg,var(--navy-700),var(--teal));-webkit-background-clip:text;background-clip:text;color:transparent}

/* Contacto */
.section.contact{padding-top:0;padding-bottom:72px}
.contact .kicker{margin-bottom:.6rem}
.contact-box{display:grid;gap:28px;background:radial-gradient(800px 400px at 100% 0%,#22303f,transparent 60%),linear-gradient(160deg,var(--navy-800),var(--navy-950));color:#fff;border-radius:28px;padding:32px 22px;box-shadow:var(--shadow-lg)}
.contact-box h2{color:#fff}
.contact-list{display:grid;gap:10px}
.contact-list a,.contact-list li>div{display:flex;align-items:center;gap:14px;padding:14px 16px;border-radius:14px;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.09);color:#fff;text-decoration:none;transition:border-color .2s,background .2s;word-break:break-word}
.contact-list a:hover{border-color:rgba(98,227,234,.55);background:rgba(98,227,234,.08)}
.contact-list small{display:block;font-size:.75rem;letter-spacing:.08em;text-transform:uppercase;color:var(--silver-500)}
.ci{width:40px;height:40px;flex:none;border-radius:12px;display:grid;place-items:center;background:var(--cyan-soft);color:var(--cyan)}

/* Footer */
.site-footer{background:var(--navy-950);color:var(--silver-300);padding:48px 0 24px;margin-top:0;font-size:.92rem}
.site-footer a{color:var(--silver-100);text-decoration:none}
.site-footer a:hover{color:var(--cyan)}
.foot-in{display:grid;gap:28px}
.foot-brand img{height:84px;width:auto;margin-bottom:10px}
.foot-nav{display:grid;grid-template-columns:repeat(2,auto);gap:8px 24px;justify-content:start}
.sister{margin-top:1rem;padding-top:1rem;border-top:1px solid rgba(255,255,255,.08);font-size:.88rem}
.sister a{color:var(--cyan)}
.foot-legal{border-top:1px solid rgba(255,255,255,.08);margin-top:28px;padding-top:18px;font-size:.82rem;color:var(--silver-500)}
.foot-legal p{margin:0}

/* WhatsApp flotante */
.wa-float{position:fixed;right:16px;bottom:16px;z-index:60;display:flex;align-items:center;gap:8px;background:var(--wa);color:var(--wa-ink);border-radius:999px;padding:14px;box-shadow:0 10px 28px rgba(0,0,0,.3);text-decoration:none;font-family:var(--head);font-weight:700;transition:transform .2s}
.wa-float .i{width:28px;height:28px}
.wa-float:hover{transform:scale(1.06)}
.wa-float::before{content:"";position:absolute;inset:0;border-radius:inherit;box-shadow:0 0 0 0 rgba(37,211,102,.5);animation:wapulse 2.6s infinite}
@keyframes wapulse{0%{box-shadow:0 0 0 0 rgba(37,211,102,.5)}70%{box-shadow:0 0 0 16px rgba(37,211,102,0)}100%{box-shadow:0 0 0 0 rgba(37,211,102,0)}}
.wa-float-t{display:none}

/* Animación de entrada */
.js .reveal{opacity:0;transform:translateY(18px);transition:opacity .7s ease,transform .7s ease}
.js .reveal.in{opacity:1;transform:none}

/* ≥ 600px */
@media (min-width:600px){
  .wrap{padding:0 28px}
  .cards-2{grid-template-columns:repeat(2,1fr)}
  .products{grid-template-columns:repeat(3,1fr);gap:16px}
  .why{grid-template-columns:repeat(2,1fr)}
  .offer{grid-template-columns:repeat(2,1fr)}
  .reels{grid-template-columns:repeat(2,1fr);gap:16px}
  .reel.featured{flex-direction:row}
  .reel.featured .reel-img{flex:0 0 46%}
  .reel.featured .reel-body{padding:24px;justify-content:center}
  .contact-box{padding:44px}
  .foot-in{grid-template-columns:1.2fr 1fr 1fr}
  .hide-sm{display:inline}
  .wa-float{padding:14px 20px 14px 16px}
  .wa-float-t{display:inline}
}
/* ≥ 960px */
@media (min-width:960px){
  :root{--hh:76px}
  .brand img{height:60px}
  .nav-toggle{display:none}
  .nav{position:static;transform:none;opacity:1;visibility:visible;flex-direction:row;align-items:center;background:transparent;padding:0;gap:4px;border:0}
  .nav a{border:0;padding:8px 12px;font-size:.93rem;border-radius:8px}
  .nav a.btn{margin:0 0 0 10px;padding:.6em 1.1em}
  .hero{padding:80px 0 110px}
  .hero-in{grid-template-columns:1.25fr .85fr;align-items:center;gap:64px}
  .hero-media{max-width:420px;margin-right:0}
  .hero-badge{left:-48px;bottom:40px}
  .section{padding:104px 0}
  .section.contact{padding:0 0 104px}
  .split{grid-template-columns:1.1fr .9fr;gap:64px}
  .split.reverse .split-copy{order:2}
  .split-media{grid-template-columns:1fr}
  .split-media:not(.single){padding-right:60px;padding-bottom:60px}
  .photo.small{display:block;position:absolute;right:0;bottom:0;width:46%;aspect-ratio:4/5;border:4px solid #fff;box-shadow:var(--shadow-lg)}
  .products{grid-template-columns:repeat(6,1fr)}
  .products .product h3{font-size:.9rem}
  .reels{grid-template-columns:repeat(4,1fr)}
  .reel.featured{grid-column:1/-1;max-width:none}
  .reel.featured .reel-img{flex:0 0 34%;aspect-ratio:4/5}
  .reel.featured .reel-body{padding:40px}
  .reel.featured h3{font-size:1.7rem}
  .reel.featured p{font-size:1.05rem}
  .why{grid-template-columns:repeat(4,1fr)}
  .contact-box{grid-template-columns:1.1fr 1fr;align-items:center;padding:56px}
}
@media (min-width:1200px){
  .reels{grid-template-columns:repeat(4,1fr)}
  .reel.featured{grid-column:1/3;grid-row:1/3;flex-direction:column}
  .reel.featured .reel-img{flex:none;aspect-ratio:1/1}
  .reel.featured .reel-body{padding:22px 22px 26px}
  .reel.featured h3{font-size:1.45rem}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .js .reveal{opacity:1;transform:none}
}