:root{
  --bg:#0e0f12;
  --bg-elev:#121417;
  --white:#f3f4f6;
  --red:#d3152a;
  --gray:#9aa0a6;
  --metal:#3c4047;
  --line:rgba(255,255,255,0.05);
  --panel-bg:#101318;
  --ring:rgba(211,21,42,0.6);
  --col-bg:#14161b;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;color:var(--white);background:var(--bg);font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,"Noto Sans",sans-serif;position:relative;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
body::before{content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;background:
  radial-gradient(1200px 600px at 50% -200px,rgba(255,255,255,0.06),transparent 70%),
  linear-gradient(180deg,rgba(255,255,255,0.03),rgba(0,0,0,0) 40%,rgba(255,255,255,0.02)),
  repeating-linear-gradient(45deg,rgba(255,255,255,0.02) 0 2px,rgba(0,0,0,0.02) 2px 4px)}
.container{max-width:1200px;margin:0 auto;padding:0 clamp(14px,2.4vw,24px)}
.site-header{position:sticky;top:0;z-index:2000;background:linear-gradient(180deg,rgba(18,20,23,0.95),rgba(18,20,23,0.8))}
.header-inner{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;height:clamp(64px,8vh,88px);position:relative}
.header-inner .nav{position:absolute;left:24px;top:0;bottom:0;display:flex;align-items:center}
.brand{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);margin:0}
.brand{font-weight:700;font-size:1rem;letter-spacing:.6px;text-transform:uppercase;color:var(--white);text-decoration:none;display:inline-flex;align-items:center;justify-content:center}
.brand-logo{height:clamp(36px,6vh,64px);width:auto;max-width:min(28rem,46vw);object-fit:contain;opacity:.98}
@media (max-width:820px){.brand-logo{height:clamp(32px,6vh,52px);max-width:min(22rem,60vw)}}
.reg{color:var(--red)}
.nav-toggle{display:inline-grid;place-items:center;width:40px;height:40px;background:transparent;border:1px solid var(--metal);color:var(--white);border-radius:10px;position:absolute;right:24px;top:50%;transform:translateY(-50%)}
.hamburger{display:inline-block;width:20px;height:14px;position:relative}
.hamburger span{position:absolute;left:0;right:0;height:2px;background:var(--white);border-radius:2px;transition:transform .25s ease, opacity .25s ease}
.hamburger span:nth-child(1){top:0}
.hamburger span:nth-child(2){top:6px}
.hamburger span:nth-child(3){top:12px}
.nav-toggle[aria-expanded="true"] .hamburger span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .hamburger span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .hamburger span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.nav-list{list-style:none;margin:0;padding:20px 18px;gap:10px;align-items:flex-start;position:fixed;top:72px;right:0;bottom:0;width:min(420px,92vw);z-index:100;background:var(--panel-bg);border-left:1px solid var(--metal);display:none;opacity:0;transform:translateX(12px);transition:opacity .25s ease, transform .25s ease;color:var(--white);overflow-y:auto;box-shadow:-24px 0 48px rgba(0,0,0,0.45)}
.nav-list{z-index:1000}
.nav-list a{color:var(--white);text-decoration:none;padding:12px 16px;border-radius:10px;display:block;letter-spacing:.2px}
.nav-list > li > a,.menu-heading{min-height:40px;display:flex;align-items:center;border-radius:10px}
.nav-list a:hover,.nav-list a:focus-visible{background-color:#171a1f;box-shadow:0 0 0 2px var(--ring)}
.nav-list a{position:relative}
.nav-list a::after{content:"";position:absolute;left:12px;right:12px;bottom:6px;height:2px;background:var(--red);transform:scaleX(0);transform-origin:left;transition:transform .25s ease, opacity .25s ease;opacity:.9}
.nav-list a:hover::after,.nav-list a:focus-visible::after{transform:scaleX(1)}
.nav-list > li + li{border-top:1px solid rgba(255,255,255,0.06);padding-top:8px}
.nav .nav-list.open{display:flex;flex-direction:column;opacity:1;transform:none;visibility:visible}
.header-inner.nav-open .nav .nav-list{display:flex;flex-direction:column;opacity:1;transform:none;visibility:visible}
.menu-heading{color:var(--white);font-weight:600;padding:10px 12px}
.menu-heading{display:flex;align-items:center;justify-content:space-between;cursor:pointer;user-select:none}
.menu-heading::after{content:'▸';color:var(--gray);transition:transform .25s ease, color .25s ease}
.menu-heading[aria-expanded="true"]::after{transform:rotate(90deg);color:var(--red)}
.sub-list{list-style:none;margin:8px 0 0 0;padding:8px 0 0 0;display:grid;gap:4px;border-left:none;max-height:0;overflow:hidden;opacity:0;transition:max-height .25s ease, opacity .25s ease;background:linear-gradient(180deg,rgba(255,255,255,0.02),transparent)}
.menu-heading[aria-expanded="true"] + .sub-list{max-height:600px;opacity:1}
.sub-list a{padding:10px 24px;color:#e6e7ea}
.nav-list > li + li{border-top:1px solid rgba(255,255,255,0.06);padding-top:8px;margin-top:4px}
.sub-list li + li{border-top:1px solid rgba(255,255,255,0.06);padding-top:6px;margin-top:2px}

/* Overlay para el panel de menú */
.menu-overlay{position:fixed;inset:0;background:rgba(0,0,0,0.6);backdrop-filter:saturate(110%) blur(1px);opacity:0;visibility:hidden;transition:opacity .25s ease, visibility .25s ease;z-index:900}
.menu-overlay.open{opacity:1;visibility:visible}
body.menu-open{overflow:hidden}
.header-inner .nav-toggle[aria-expanded="true"] ~ .nav .nav-list{display:flex;flex-direction:column;opacity:1;transform:none}
.btn-outline{border:1px solid var(--metal)}
.dropdown{position:relative}
.drop-toggle{background:transparent;border:1px solid var(--metal);color:var(--white);padding:10px 12px;border-radius:8px}
.drop-menu{position:absolute;top:calc(100% + 8px);left:0;min-width:240px;background:var(--bg-elev);border:1px solid var(--metal);border-radius:10px;padding:8px;display:none;box-shadow:0 10px 30px rgba(0,0,0,0.45)}
.drop-menu a{display:block;padding:10px 12px;border-radius:8px}
.drop-menu a:hover{background-color:#161a1f}
.dropdown.open .drop-menu{display:block}
.divider{height:1px;background:linear-gradient(90deg,var(--line),transparent)}
.hero-full{position:relative;height:100vh;display:flex;align-items:stretch;overflow:hidden}
.hero-grid{display:flex;gap:14px;align-items:stretch;flex:1;justify-content:space-between;overflow-x:auto;scroll-snap-type:x proximity}
.grid-lines{position:absolute;inset:0;pointer-events:none;background:
  linear-gradient(180deg,var(--line),transparent)}
.hero-col{position:relative;display:block;color:var(--white);text-decoration:none;scroll-snap-align:start;flex:var(--col-grow,1) var(--col-shrink,1) var(--col-basis,20%);min-width:clamp(220px,20vw,480px);border:1px solid var(--metal);border-radius:12px;overflow:hidden;background:var(--col-bg);transition:transform .25s ease, border-color .25s ease;will-change:transform}
.hero-col::before{content:"";position:absolute;inset:0;z-index:0;background-image:var(--bg-image);background-size:cover;background-position:var(--bg-pos, center);background-repeat:no-repeat;opacity:0;transform:translateY(8px);transition:opacity .35s ease, transform .35s ease;backface-visibility:hidden;-webkit-backface-visibility:hidden;contain:paint;pointer-events:none}
.col-inner{position:relative;height:100%;display:flex;align-items:center;justify-content:center;padding:16px}
.logo{position:relative;z-index:1;max-width:70%;max-height:50%;object-fit:contain;opacity:1;transition:opacity .35s ease, transform .35s ease;transform:translateY(0)}
.image{position:absolute;inset:0;z-index:1;background:transparent;opacity:0;transform:none;transition:none;pointer-events:none}
.hero-col:hover::before,.hero-col.hover-active::before{opacity:1;transform:translateY(0)}
.hero-col:hover,.hero-col.hover-active{transform:scaleX(1.06);border-color:#4a5058}
.hero-col:hover .logo,.hero-col.hover-active .logo{opacity:0;transform:translateY(6px)}
.hero-col:hover .image,.hero-col.hover-active .image{opacity:0}
.section{padding:64px 0}
.timeline{position:relative;margin-top:16px;padding-top:40px;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:20px;align-items:start}
.timeline::before{content:"";position:absolute;top:16px;left:0;right:0;height:2px;background:var(--line)}
.tl-item{position:relative;padding-top:4px}
.tl-item::before{content:"";position:absolute;top:8px;left:50%;transform:translateX(-50%);width:8px;height:8px;border-radius:50%;background:#f3f4f6;box-shadow:0 0 0 2px var(--metal)}
.tl-item h3{margin:0 0 8px;font-size:18px;letter-spacing:.3px;text-transform:uppercase}
.tl-item p{margin:0;color:#e6e7ea;line-height:1.6}
.service{padding:72px 0;background:linear-gradient(180deg,rgba(255,255,255,0.02),transparent)}
.service .content{display:grid;grid-template-columns:1.2fr 1fr;gap:24px;align-items:center}
.service .section-desc{color:#e6e7ea;line-height:1.6;margin:10px 0 16px}
.capabilities{list-style:none;margin:0;padding:0;display:grid;gap:10px;grid-template-columns:repeat(2,minmax(0,1fr))}
.capabilities li{display:flex;align-items:flex-start;gap:10px;padding:12px 12px;border:1px solid var(--metal);border-radius:12px;background:rgba(255,255,255,0.03);transition:border-color .25s ease, background-color .25s ease}
.capabilities li::before{content:"";width:8px;height:8px;border-radius:50%;margin-top:7px;background:var(--accent, var(--red))}
.capabilities li:hover{border-color:var(--accent, var(--red));background:linear-gradient(180deg,rgba(255,255,255,0.04),transparent)}
.service .media{min-height:clamp(220px,32vh,480px);border:1px solid var(--metal);border-radius:12px;background:linear-gradient(180deg,rgba(255,255,255,0.02),transparent);aspect-ratio:16/9;display:grid;place-items:center;color:#cfd2d6}
.gallery{display:grid;grid-template-rows:1fr auto}
.gallery-track{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;border-radius:12px;-webkit-overflow-scrolling:touch;scrollbar-width:none;scroll-behavior:smooth;touch-action:pan-x}
.gallery-track::-webkit-scrollbar{display:none}
.gallery-track{align-items:center}
.gallery-track img{width:100%;height:100%;object-fit:contain;object-position:center;background:#0e0f12;flex:0 0 100%;scroll-snap-align:center}
.gallery-dots{display:none}
.competitive{position:relative;--accent:var(--red);padding:24px;border:1px solid var(--metal);border-radius:14px;background:
  linear-gradient(180deg,rgba(211,21,42,0.08),rgba(255,255,255,0)),
  linear-gradient(180deg,rgba(255,255,255,0.02),transparent);
box-shadow:0 16px 40px rgba(0,0,0,0.35);isolation:isolate}
.competitive::before{content:"";position:absolute;inset:0;border-radius:inherit;background:linear-gradient(180deg,rgba(0,0,0,0.35),rgba(0,0,0,0.2));pointer-events:none}
.competitive .section-head{margin-bottom:12px}
.competitive .section-head h2{color:#fbe6e9;font-size:26px;letter-spacing:.6px}
.competitive .section-line{background:linear-gradient(90deg,rgba(211,21,42,0.25),transparent)}
.competitive .section-desc{color:#e6e7ea;margin:8px 0 16px}
.competitive-list{list-style:none;margin:0;padding:0;display:grid;gap:14px;grid-template-columns:repeat(3,minmax(0,1fr));grid-auto-rows:minmax(56px,auto)}
.competitive-list li{display:flex;align-items:center;gap:14px;padding:14px 16px;border:1px solid #4a5058;border-radius:14px;background:linear-gradient(180deg,rgba(255,255,255,0.035),rgba(255,255,255,0.02));transition:border-color .25s ease, background-color .25s ease, box-shadow .25s ease, transform .25s ease;color:#e8eaed}
.competitive-list li:hover{border-color:var(--accent);background:linear-gradient(180deg,rgba(255,255,255,0.055),rgba(255,255,255,0.02));box-shadow:0 8px 26px rgba(0,0,0,0.35);transform:translateY(-1px)}
.competitive-list li > div{font-weight:500}
.icon-badge{display:inline-grid;place-items:center;width:40px;height:40px;border-radius:12px;background:linear-gradient(180deg,var(--accent),#b01022);color:#fff;flex:0 0 auto;box-shadow:inset 0 0 0 1px rgba(255,255,255,0.1),0 4px 16px rgba(211,21,42,0.35)}
.icon-badge svg{width:20px;height:20px;opacity:.95}
.subpage-hero{padding:84px 0;border-bottom:1px solid var(--metal);background:linear-gradient(180deg,rgba(255,255,255,0.03),transparent)}
.subpage-hero .hero-inner{display:grid;grid-template-columns:1fr auto;gap:24px;align-items:center}
.subpage-hero .hero-logo{display:flex;align-items:center;justify-content:flex-end}
.subpage-hero .hero-logo img{max-height:72px;max-width:280px;object-fit:contain;opacity:.95}
.subpage-hero h1{margin:0;font-size:clamp(32px,4vw,40px);letter-spacing:.6px;text-transform:uppercase}
.subpage-hero .section-desc{color:#cfd2d6;max-width:70ch;margin-top:12px}
.subpage-hero.service-security{--accent:#d3152a;background:linear-gradient(180deg,rgba(211,21,42,0.12),transparent)}
.subpage-hero.service-construccion{--accent:#8b9097;background:linear-gradient(180deg,rgba(139,144,151,0.12),transparent)}
.subpage-hero.service-medical{--accent:#4f6b8a;background:linear-gradient(180deg,rgba(79,107,138,0.12),transparent)}
.subpage-hero.service-water{--accent:#1761a0;background:linear-gradient(180deg,rgba(23,97,160,0.12),transparent)}
.subpage-hero.service-energia{--accent:#3aa66a;background:linear-gradient(180deg,rgba(58,166,106,0.12),transparent)}
.service-security{--accent:#d3152a;background:linear-gradient(180deg,rgba(211,21,42,0.08),transparent)}
.service-security .section-head h2{color:#fbe6e9}
.service-construccion{--accent:#8b9097;background:linear-gradient(180deg,rgba(139,144,151,0.08),transparent)}
.service-construccion .section-head h2{color:#e9ebee}
.service-medical{--accent:#4f6b8a;background:linear-gradient(180deg,rgba(79,107,138,0.08),transparent)}
.service-medical .section-head h2{color:#e8eef6}
.service-water{--accent:#1761a0;background:linear-gradient(180deg,rgba(23,97,160,0.08),transparent)}
.service-water .section-head h2{color:#e6f1fb}
.service-energia{--accent:#3aa66a;background:linear-gradient(180deg,rgba(58,166,106,0.08),transparent)}
.service-energia .section-head h2{color:#e7f7ee}
.cta-center{display:flex;align-items:center;justify-content:center;padding:32px 0}
.btn-red-outline{display:inline-block;padding:12px 20px;border:1px solid var(--red);border-radius:10px;color:var(--red);background:transparent;text-decoration:none;letter-spacing:.3px;transition:background-color .25s ease, color .25s ease, box-shadow .25s ease}
.btn-red-outline:hover,.btn-red-outline:focus-visible{background:var(--red);color:#fff;box-shadow:0 0 0 2px rgba(211,21,42,0.35)}
.section-head{display:flex;align-items:center;gap:16px}
.section-head h2{margin:0;font-size:clamp(20px,2.4vw,26px);letter-spacing:.4px;text-transform:uppercase}
.section-line{height:1px;flex:1;background:linear-gradient(90deg,var(--line),transparent)}
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s ease, transform .6s ease}
.reveal.in-view{opacity:1;transform:none}
.site-footer{padding:24px 0;background:#000}
.footer-inner{display:grid;grid-template-columns:1.2fr 1fr .8fr;gap:24px;align-items:start}
.contact-form{display:flex;flex-direction:column;gap:10px}
.contact-form input,.contact-form textarea{background:#000;border:1px solid var(--metal);border-radius:10px;color:var(--white);padding:10px 12px}
.btn-primary{background:var(--red);color:#fff;border:none;border-radius:10px;padding:12px 16px;min-height:44px}
.btn-primary:hover,.btn-primary:focus-visible{filter:brightness(1.06);box-shadow:0 0 0 2px rgba(211,21,42,0.35),0 8px 20px rgba(211,21,42,0.25)}
.form-status{margin:6px 0 0;color:var(--gray)}
.essene{justify-self:end;align-self:end;color:var(--gray)}
.site-footer .divider{background:linear-gradient(90deg,rgba(211,21,42,0.45),transparent)}
.site-footer a{color:#fff;text-decoration:none}
.site-footer a:hover{color:var(--red)}
.footer-tagline{color:#fff;margin:6px 0 14px}
.footer-group{margin:8px 0;padding-top:10px;border-top:1px solid rgba(211,21,42,0.35)}
.footer-label{color:#fff;font-weight:600;margin-bottom:6px}
.contact-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.footer-item{display:flex;align-items:center;gap:10px}
.fi{display:inline-grid;place-items:center;width:28px;height:28px;border:1px solid rgba(211,21,42,0.5);border-radius:8px;color:var(--red);flex:0 0 auto;background:rgba(211,21,42,0.08)}
@media (max-width:1024px){.logo{max-width:72%}}
@media (max-width:820px){.hero-grid{padding:0 16px}.grid-lines{background:none}.hero-full{height:auto}.col-inner{height:56vh}.hero-col{flex:0 0 clamp(220px,70vw,360px)}.service .content{grid-template-columns:1fr}.capabilities,.competitive-list{grid-template-columns:1fr}.subpage-hero h1{font-size:32px}.subpage-hero .hero-inner{grid-template-columns:1fr}.subpage-hero .hero-logo{justify-content:center;margin-top:12px}.about-hero .hero-inner{grid-template-columns:1fr}.values-list{grid-template-columns:1fr}.about-grid{grid-template-columns:1fr}.contact-grid{grid-template-columns:1fr}}
@media (max-width:1024px){.competitive-list{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:820px){.timeline{grid-template-columns:1fr;gap:18px;padding-top:0;margin-top:0}
.timeline::before{left:24px;right:auto;width:2px;top:0;height:100%}
.tl-item{padding-left:40px}
.tl-item::before{left:24px;top:0;transform:none}}
/* Menú unificado: mismo comportamiento en todas las plataformas */
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{transition:none !important}
}
.about-hero{position:relative;padding:84px 0;border-bottom:1px solid var(--metal);background:linear-gradient(180deg,rgba(255,255,255,0.03),transparent)}
.about-hero::before{content:"";position:absolute;inset:0;background-image:var(--about-bg);background-size:cover;background-position:var(--about-pos, center 55%);opacity:.28;filter:saturate(110%) contrast(95%);pointer-events:none}
.about-hero .hero-inner > div{background:rgba(16,19,24,0.45);border:1px solid var(--metal);border-radius:12px;padding:22px 26px;backdrop-filter:blur(1.5px);box-shadow:0 8px 28px rgba(0,0,0,0.35)}
.about-hero h1{font-size:clamp(34px,4.5vw,42px);line-height:1.2;letter-spacing:.7px}
.about-hero .section-desc{color:#d8dde3;line-height:1.7}
.about-hero .hero-inner{display:grid;grid-template-columns:1fr;gap:24px;align-items:center;justify-items:center}
.about-hero .hero-inner > div{max-width:780px;text-align:center}
.about-hero h1{margin:0;font-size:clamp(32px,4vw,40px);letter-spacing:.6px;text-transform:uppercase}
.about-hero .section-desc{color:#cfd2d6;max-width:72ch;margin-top:12px}
.about-section{padding:64px 0}
.about-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:24px;align-items:start}
.about-image{display:block;width:auto;height:auto;max-width:100%;max-height:clamp(220px,56vh,520px);margin:0 auto;border-radius:10px;background:#0e0f12;box-shadow:0 10px 28px rgba(0,0,0,0.35);border:1px solid #4a5058}
.values-list{list-style:none;margin:0;padding:0;display:grid;gap:12px;grid-template-columns:repeat(2,minmax(0,1fr))}
.values-list li{padding:12px;border:1px solid var(--metal);border-radius:12px;background:rgba(255,255,255,0.03)}
@media (max-width:820px){.about-hero h1{font-size:34px}.about-hero .section-desc{font-size:16px}}