/* HIE · Ingeniería y Ejecución · hoja de estilos principal */
:root{
  --rojo:#E30613; --rojo-oscuro:#B8050F; --negro:#141414; --grafito:#1E1E1E;
  --acero:#5C5C5C; --gris:#9A9A9A; --gris-claro:#B8B8B8; --linea:#E4E1DB; --linea-2:#D9D6D0;
  --concreto:#F4F2EE; --blanco:#FFFFFF;
  --f-disp:'Archivo',Arial,sans-serif; --f-texto:'IBM Plex Sans',system-ui,-apple-system,Segoe UI,sans-serif; --f-mono:'IBM Plex Mono',ui-monospace,Consolas,monospace;
  --ancho:1280px; --pad:80px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--f-texto);font-size:16px;line-height:1.5;color:var(--negro);background:var(--blanco)}
img{max-width:100%;height:auto;display:block}
a{color:var(--rojo-oscuro);text-decoration:none}
a:hover{color:var(--rojo)}
h1,h2,h3{margin:0}
p{margin:0}
:focus-visible{outline:3px solid var(--rojo);outline-offset:2px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}
.skip{position:absolute;left:-999px;top:0;background:var(--negro);color:#fff;padding:12px 16px;z-index:100}
.skip:focus{left:8px}

/* Tipografía */
.disp{font-family:var(--f-disp);font-stretch:125%;font-weight:800;letter-spacing:-0.01em;line-height:1.08}
.mono{font-family:var(--f-mono);font-weight:500;letter-spacing:.08em;text-transform:uppercase;font-size:13px}
.eyebrow{color:var(--rojo)}
.h1{font-size:clamp(34px,5vw,64px);line-height:1.03}
.h2{font-size:clamp(26px,3.2vw,44px)}
.h3{font-size:clamp(20px,1.8vw,24px)}
.lead{font-size:clamp(16px,1.5vw,20px);line-height:1.55}
.muted{color:var(--acero)}
.on-dark .muted,.on-dark .lead{color:var(--gris-claro)}

/* Contenedores */
.wrap{max-width:calc(var(--ancho) + 2*var(--pad));margin:0 auto;padding:0 var(--pad)}
.section{padding:96px 0}
.section--sm{padding:64px 0}
.bg-concreto{background:var(--concreto)}
.bg-negro{background:var(--negro);color:#fff}
.bg-grafito{background:var(--grafito);color:#fff}
.bg-rojo{background:var(--rojo);color:#fff}
.grid-cad{background-color:var(--negro);background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);background-size:40px 40px;color:#fff}
.stack{display:flex;flex-direction:column;gap:16px}
.row-between{display:flex;justify-content:space-between;align-items:flex-end;gap:32px;flex-wrap:wrap}
.sec-head{display:flex;flex-direction:column;gap:16px;margin-bottom:48px}
.row-between.sec-head{flex-direction:row}
.split{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:80px}
.g2,.g3,.g4,.g6,.g7{display:grid;gap:20px}
.g2{grid-template-columns:repeat(2,minmax(0,1fr))}
.g3{grid-template-columns:repeat(3,minmax(0,1fr))}
.g4{grid-template-columns:repeat(4,minmax(0,1fr))}
.g6{grid-template-columns:repeat(6,minmax(0,1fr))}
.g7{grid-template-columns:repeat(7,minmax(0,1fr))}

/* Botones */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:52px;padding:0 26px;border-radius:2px;font-weight:600;font-size:16px;border:1.5px solid transparent;cursor:pointer;font-family:inherit;transition:background .15s,color .15s,border-color .15s}
.btn svg{width:18px;height:18px}
.btn--rojo{background:var(--rojo);color:#fff}
.btn--rojo:hover{background:var(--rojo-oscuro);color:#fff}
.btn--linea{border-color:var(--negro);color:var(--negro);background:transparent}
.btn--linea:hover{background:var(--negro);color:#fff}
.btn--linea-blanca{border-color:#fff;color:#fff;background:transparent}
.btn--linea-blanca:hover{background:#fff;color:var(--negro)}
.btn--blanco{background:#fff;color:var(--rojo-oscuro)}
.btn--blanco:hover{background:var(--concreto);color:var(--rojo-oscuro)}
.btns{display:flex;gap:16px;flex-wrap:wrap}
.link{font-weight:600;display:inline-flex;align-items:center;gap:8px}
.link svg{width:18px;height:18px}
.link--blanco{color:#fff;border-bottom:1.5px solid var(--rojo);padding-bottom:4px}
.link--blanco:hover{color:#fff}

/* Barra utilitaria y header */
.util{background:var(--negro);color:var(--gris-claro);font-size:13px}
.util .wrap{display:flex;justify-content:space-between;align-items:center;min-height:40px;gap:24px}
.util a{color:var(--gris-claro)}
.util a:hover{color:#fff}
.util__l{display:flex;gap:28px;flex-wrap:wrap}
.header{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--linea)}
.header .wrap{display:flex;align-items:center;justify-content:space-between;min-height:84px;gap:24px}
.header__logo img{height:44px;width:auto}
.nav{display:flex;gap:30px;align-items:center}
.nav a{color:var(--negro);font-weight:500;font-size:15px}
.nav a:hover,.nav a[aria-current="page"]{color:var(--rojo)}
.menu-btn{display:none;width:44px;height:44px;border:0;background:transparent;align-items:center;justify-content:center;cursor:pointer}
.menu-btn svg{width:26px;height:26px}

/* Hero */
.hero{display:grid;grid-template-columns:minmax(0,47fr) minmax(0,53fr);min-height:680px}
.hero__txt{padding:96px 64px 64px var(--pad);display:flex;flex-direction:column;gap:26px;justify-content:center}
.hero__txt .lead{max-width:520px}
.hero__img{position:relative;min-height:420px}
.hero__img img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero__tags{margin-top:auto;display:flex;gap:16px;flex-wrap:wrap;color:var(--gris)}
.hero__tags b{color:var(--rojo);font-weight:500}
.corner{position:absolute;width:28px;height:28px;border:0 solid var(--rojo)}
.corner--tl{left:36px;top:36px;border-left-width:3px;border-top-width:3px}
.corner--tr{right:36px;top:36px;border-right-width:3px;border-top-width:3px}
.corner--bl{left:36px;bottom:36px;border-left-width:3px;border-bottom-width:3px}
.corner--br{right:36px;bottom:36px;border-right-width:3px;border-bottom-width:3px}
.tag-foto{position:absolute;left:60px;bottom:64px;background:#fff;color:var(--negro);padding:14px 18px;display:flex;flex-direction:column;gap:4px}
.tag-foto .mono{font-size:11px;color:var(--acero)}
.tag-foto span:last-child{font-weight:600;font-size:15px}
.page-hero{padding:56px 0 64px}
.page-hero .stack{gap:22px;max-width:820px}
.crumbs{display:flex;gap:10px;flex-wrap:wrap;font-size:12px;color:var(--acero)}
.crumbs a{color:inherit}
.on-dark .crumbs,.grid-cad .crumbs{color:var(--gris)}
.hero-split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,560px);background:var(--concreto)}
.hero-split__txt{padding:48px 64px 64px var(--pad);display:flex;flex-direction:column;gap:22px}
.hero-split__img img{width:100%;height:100%;object-fit:cover;min-height:360px}
.hero-split__txt .crumbs{margin-bottom:24px}

/* Selector de necesidad */
.need{display:flex;flex-direction:column;justify-content:space-between;gap:20px;min-height:160px;padding:24px;background:#fff;border:1.5px solid var(--linea);color:var(--negro);transition:border-color .15s,background .15s,color .15s}
.need:hover{background:var(--negro);border-color:var(--negro);color:#fff}
.need svg{width:32px;height:32px;stroke:var(--rojo)}
.need__t{display:flex;justify-content:space-between;align-items:flex-end;gap:8px;font-weight:600;line-height:1.3}
.need__t svg{width:18px;height:18px;stroke:currentColor;flex-shrink:0}

/* Tarjetas */
.card{display:flex;flex-direction:column;gap:14px;color:var(--negro)}
.card img{width:100%;aspect-ratio:3/4;object-fit:cover}
.card--wide img{aspect-ratio:4/3}
.card:hover .card__t{color:var(--rojo)}
.card .mono{font-size:12px;color:var(--acero)}
.box{padding:32px;border:1.5px solid var(--linea);display:flex;flex-direction:column;gap:14px}
.box--link{color:var(--negro)}
.box--link:hover{border-color:var(--negro)}
.chips{display:flex;gap:8px;flex-wrap:wrap}
.chip{min-height:34px;padding:0 12px;background:var(--concreto);display:inline-flex;align-items:center;font-size:13px;font-weight:600;color:var(--negro)}
.pill{min-height:44px;padding:0 18px;border:1.5px solid var(--linea);display:inline-flex;align-items:center;font-weight:600;font-size:14px;color:var(--negro);background:#fff;cursor:pointer;font-family:inherit}
.pill[aria-pressed="true"],.pill:hover{background:var(--negro);color:#fff;border-color:var(--negro)}
.plus{display:flex;gap:10px;font-size:15px;color:#3A3A3A}
.plus::before{content:"+";color:var(--rojo);font-weight:600}
.num-item{display:flex;gap:16px}
.num-item .mono{color:var(--rojo);padding-top:3px}
.num-item__t{font-size:18px;font-weight:600}
.num-item p{font-size:15px;color:var(--acero);margin-top:6px}
.on-dark .num-item p{color:var(--gris-claro)}
.top-line{border-top:2px solid var(--negro);padding-top:18px;display:flex;flex-direction:column;gap:8px}
.top-line b{font-size:18px}
.top-line span{color:var(--acero);font-size:15px}

/* Metodología */
.phases{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.phase .mono{color:var(--gris);font-size:12px}
.phase__br{height:10px;border:1.5px solid var(--acero);border-bottom:0;margin-top:10px}
.timeline{display:grid;grid-template-columns:repeat(9,minmax(0,1fr));gap:16px;border-top:2px solid var(--rojo);margin-top:28px}
.step{display:flex;flex-direction:column;gap:12px}
.step::before{content:"";width:12px;height:12px;background:var(--rojo);margin-top:-7px}
.step .mono{color:var(--rojo)}
.step b{font-size:15px;line-height:1.3;hyphens:auto;overflow-wrap:break-word}
.steps3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:48px}

/* Indicadores */
.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:32px}
.stat{border-top:3px solid var(--negro);padding-top:20px;display:flex;flex-direction:column;gap:8px}
.stat:first-child{border-top-color:var(--rojo)}
.stat .disp{font-size:clamp(34px,4vw,48px);line-height:1}
.stat span:last-child{color:var(--acero)}

/* Clientes */
.logos{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:20px 24px}
.logos li{list-style:none;height:72px;display:flex;align-items:center;justify-content:center}
.logos img{max-width:140px;max-height:50px;width:auto;height:auto;filter:grayscale(1);opacity:.75;transition:filter .2s,opacity .2s}
.logos img:hover{filter:none;opacity:1}
ul.logos{padding:0;margin:0}

/* Caso / feature */
.feature{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:64px;align-items:center}
.feature img{width:100%;aspect-ratio:5/4;object-fit:cover}
.flow{display:flex;gap:14px;flex-wrap:wrap;color:var(--acero)}
.flow b{color:var(--rojo);font-weight:500}

/* CTA */
.cta{display:flex;justify-content:space-between;align-items:center;gap:64px}
.cta .stack{max-width:780px;gap:18px}
.cta__btns{display:flex;flex-direction:column;gap:14px;min-width:280px}

/* FAQ */
.faq details{border-top:1px solid var(--linea);padding:20px 0}
.faq details:first-child{border-top:1.5px solid var(--negro)}
.faq details:last-child{border-bottom:1px solid var(--linea)}
.faq summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;gap:16px;font-size:18px;font-weight:600}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--rojo);font-size:22px;line-height:1}
.faq details[open] summary::after{content:"−"}
.faq details p{margin-top:12px;color:var(--acero);font-size:15px;line-height:1.6}

/* Tabla técnica */
.spec{width:100%;border-collapse:collapse;font-size:16px}
.spec th,.spec td{padding:14px 0;border-bottom:1px solid var(--linea);text-align:left;font-weight:400}
.spec td{color:var(--acero);text-align:right}

/* Formularios */
.form{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px 20px;align-content:start}
.form .full{grid-column:1/-1}
.field{display:flex;flex-direction:column;gap:8px}
.field label,.field legend{font-size:14px;font-weight:600}
.field input,.field select,.field textarea{min-height:48px;padding:10px 14px;border:1.5px solid var(--linea-2);border-radius:2px;font:16px var(--f-texto);color:var(--negro);background:#fff;width:100%}
.field textarea{min-height:110px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--negro);outline:none}
fieldset.field{border:0;padding:0;margin:0}
.opts{display:flex;gap:8px;flex-wrap:wrap}
.opts input{position:absolute;opacity:0;width:1px;height:1px}
.opts label{min-height:42px;padding:0 16px;border:1.5px solid var(--linea-2);display:inline-flex;align-items:center;font-size:14px;font-weight:600;cursor:pointer;background:#fff}
.opts input:checked+label{background:var(--rojo);border-color:var(--rojo);color:#fff}
.opts input:focus-visible+label{outline:3px solid var(--rojo);outline-offset:2px}
.group{grid-column:1/-1;display:flex;align-items:center;gap:12px;padding-top:10px}
.group .mono{font-size:12px;color:var(--rojo)}
.group::after{content:"";flex:1;height:1px;background:var(--linea)}
.drop{border:1.5px dashed var(--linea-2);padding:22px;display:flex;flex-direction:column;gap:8px;align-items:center;text-align:center;font-size:15px;color:var(--acero);background:#fff}
.check{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--acero)}
.check input{width:18px;height:18px;accent-color:var(--rojo);margin-top:2px}
.hp{position:absolute;left:-5000px}
.form--dark .field input,.form--dark .field textarea{background:var(--grafito);border-color:#3A3A3A;color:#fff}
.form--dark .opts label{background:transparent;border-color:var(--acero);color:#fff}
.form--dark .drop{background:transparent;border-color:var(--acero);color:var(--gris-claro)}
.form--dark .check{color:var(--gris-claro)}
.form--dark .check a{color:#fff;text-decoration:underline}
.form-msg{grid-column:1/-1;font-weight:600}
.contact-card{background:var(--negro);color:#fff;padding:36px;display:flex;flex-direction:column}
.contact-card dl{margin:0}
.contact-card dt{font-family:var(--f-mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--gris);padding-top:18px}
.contact-card dd{margin:6px 0 0;padding-bottom:18px;border-bottom:1px solid #2E2E2E;font-size:16px}
.contact-card dd a{color:#fff;font-weight:600;font-size:17px}
.map{margin-top:28px;border:0;width:100%;height:240px;filter:grayscale(1)}

/* Footer */
.footer{background:var(--negro);color:var(--gris-claro);font-size:14px;padding:64px 0 32px}
.footer__top{display:grid;grid-template-columns:280px minmax(0,1fr);gap:64px}
.footer__cols{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:32px}
.footer__cols ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:12px}
.footer__cols .mono{color:#fff;font-size:12px;margin-bottom:4px;display:block}
.footer a{color:var(--gris-claro)}
.footer a:hover{color:#fff}
.footer__bottom{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap;border-top:1px solid #2E2E2E;margin-top:48px;padding-top:24px;font-size:13px;color:var(--gris)}
.footer__bottom nav{display:flex;gap:24px}

/* WhatsApp flotante y barra móvil */
.wa-float{position:fixed;right:28px;bottom:28px;z-index:40;min-height:56px;padding:0 22px 0 18px;background:var(--negro);color:#fff;display:flex;align-items:center;gap:10px;font-weight:600;border-radius:28px;box-shadow:0 6px 20px rgba(0,0,0,.25)}
.wa-float:hover{background:var(--rojo);color:#fff}
.wa-float svg{width:22px;height:22px}
.mobile-bar{display:none}

/* Diagramas */
.diagram{width:100%;height:auto;max-width:640px}

/* Responsive */
@media (max-width:1100px){
  :root{--pad:40px}
  .nav{gap:20px}
  .g6{grid-template-columns:repeat(3,minmax(0,1fr))}
  .g7,.logos{grid-template-columns:repeat(5,minmax(0,1fr))}
  .timeline{grid-template-columns:repeat(3,minmax(0,1fr));row-gap:32px}
  .hero__txt{padding:72px 40px 48px var(--pad)}
}
@media (max-width:900px){
  :root{--pad:16px}
  .util{display:none}
  .header .wrap{min-height:64px}
  .header__logo img{height:34px}
  .header .btn{display:none}
  .menu-btn{display:inline-flex}
  .nav{display:none;position:absolute;left:0;right:0;top:100%;background:#fff;flex-direction:column;align-items:stretch;gap:0;border-bottom:1px solid var(--linea);padding:8px 16px 16px}
  .nav.is-open{display:flex}
  .nav a{padding:14px 0;border-bottom:1px solid var(--linea);font-size:17px}
  .section{padding:56px 0}
  .section--sm{padding:40px 0}
  .hero,.hero-split,.split,.feature,.footer__top{grid-template-columns:1fr}
  .hero{min-height:0}
  .hero__img{order:-1;min-height:260px}
  .hero__txt{padding:32px var(--pad) 40px;gap:18px}
  .hero__txt .btns .btn{width:100%}
  .corner--bl,.corner--br,.tag-foto{display:none}
  .corner--tl{left:16px;top:16px}.corner--tr{right:16px;top:16px}
  .hero-split__txt{padding:32px var(--pad) 40px}
  .hero-split__img{order:-1}
  .hero-split__img img{min-height:240px;max-height:320px}
  .split,.feature{gap:32px}
  .g2,.g3,.g4,.stats,.phases,.steps3,.footer__cols{grid-template-columns:1fr}
  .stats{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
  .g6{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
  .need{min-height:124px;padding:16px}
  .g7,.logos{grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}
  .logos li{height:48px}
  .logos img{max-width:76px;max-height:34px}
  .timeline{grid-template-columns:1fr;border-top:0;border-left:2px solid var(--rojo);margin-left:5px;padding-left:18px;gap:14px;margin-top:16px}
  .step{flex-direction:row;align-items:baseline;gap:10px}
  .step::before{display:none}
  .phases{display:none}
  .cta{flex-direction:column;align-items:stretch;gap:28px}
  .cta__btns{min-width:0}
  .form{grid-template-columns:1fr}
  .sec-head{margin-bottom:32px}
  .row-between.sec-head{flex-direction:column;align-items:flex-start}
  .footer__cols{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer{padding-bottom:104px}
  .wa-float{display:none}
  .mobile-bar{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;position:fixed;left:0;right:0;bottom:0;z-index:45;padding:10px 12px;background:#fff;border-top:1px solid var(--linea);box-shadow:0 -4px 16px rgba(0,0,0,.08)}
  .mobile-bar a{min-height:48px;display:flex;align-items:center;justify-content:center;gap:6px;font-weight:600;font-size:14px;border:1.5px solid var(--linea);color:var(--negro);border-radius:2px}
  .mobile-bar a:last-child{background:var(--rojo);border-color:var(--rojo);color:#fff}
  .mobile-bar svg{width:18px;height:18px}
  .contact-card{padding:24px}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}