:root{
  --ink:#0b0c0e;
  --steel:#15171b;
  --steel-2:#1d2025;
  --brand:#e3231a;
  --brand-dark:#a91710;
  --paper:#f4f3f0;
  --mute:#9aa0a8;
  --line:rgba(255,255,255,.10);
  --disp:'Barlow Condensed',Arial Narrow,sans-serif;
  --body:'Barlow',Arial,sans-serif;
  --max:1180px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation:none!important;transition:none!important}}
body{font-family:var(--body);background:var(--ink);color:#e9e8e5;line-height:1.55;-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
a:focus-visible,button:focus-visible{outline:2px solid var(--brand);outline-offset:3px}
.wrap{max-width:var(--max);margin:0 auto;padding:0 20px}

/* ---------- etiqueta técnica (firma visual) ---------- */
.tag{display:inline-flex;align-items:center;gap:8px;font-family:var(--disp);font-weight:600;font-size:13px;letter-spacing:.22em;text-transform:uppercase;color:var(--mute);border:1px solid var(--line);padding:6px 12px}
.tag::before{content:"";width:8px;height:8px;background:var(--brand)}

/* ---------- header ---------- */
header{position:fixed;top:0;left:0;right:0;z-index:50;background:rgba(11,12,14,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:88px;max-width:var(--max);margin:0 auto;padding:0 20px}
.brand{display:flex;align-items:center;gap:12px}
.brand .logo-mark{flex:0 0 auto;height:74px;width:auto;object-fit:contain}
.brand-name{font-family:var(--disp);font-weight:700;font-size:24px;line-height:1.02;letter-spacing:.04em;text-transform:uppercase}
.brand-name small{display:block;font-size:11px;font-weight:600;letter-spacing:.26em;color:var(--mute)}
.menu{display:flex;align-items:center;gap:26px;list-style:none}
.menu .m-cta{display:none}
.menu a{font-family:var(--disp);font-weight:600;font-size:15px;letter-spacing:.14em;text-transform:uppercase;color:#cfd2d6;transition:color .2s}
.menu a:hover{color:#fff}
.cta-btn{background:var(--brand);color:#fff;padding:10px 20px;font-family:var(--disp);font-weight:700;font-size:15px;letter-spacing:.12em;text-transform:uppercase;transition:background .2s;display:inline-block}
.cta-btn:hover{background:var(--brand-dark)}
.cta-ghost{border:1px solid rgba(255,255,255,.35);color:#fff;padding:10px 20px;font-family:var(--disp);font-weight:600;font-size:15px;letter-spacing:.12em;text-transform:uppercase;display:inline-block;transition:border-color .2s,background .2s}
.cta-ghost:hover{border-color:#fff;background:rgba(255,255,255,.06)}
.burger{display:none;background:none;border:1px solid var(--line);color:#fff;width:42px;height:42px;font-size:20px;cursor:pointer}
@media(max-width:880px){
  .nav{height:76px}
  .brand .logo-mark{height:58px}
  .brand-name{font-size:19px}
  .menu{position:fixed;inset:76px 0 auto 0;background:#0b0c0e;flex-direction:column;align-items:stretch;gap:0;padding:8px 20px 20px;border-bottom:1px solid var(--line);display:none}
  .menu.open{display:flex}
  .menu li{border-bottom:1px solid var(--line)}
  .menu a{display:block;padding:14px 4px;font-size:17px}
  .menu .m-cta{border:0;padding-top:14px;display:block}
  .burger{display:block}
  .nav .cta-btn{display:none}
}

/* ---------- hero ---------- */
.hero{position:relative;padding:138px 0 0;background:var(--ink)}
.hero-grid{display:grid;grid-template-columns:1fr 1.05fr;gap:40px;align-items:center;max-width:var(--max);margin:0 auto;padding:0 20px}
.hero .tag{background:rgba(11,12,14,.72);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);color:#fff;border-color:rgba(255,255,255,.22)}
.hero h1{font-family:var(--disp);font-weight:700;font-size:clamp(40px,5.6vw,68px);line-height:1.0;letter-spacing:.01em;text-transform:uppercase;margin:18px 0 16px}
.hero h1 em{font-style:normal;color:var(--brand)}
.hero p{font-size:18px;color:#c7cad0;max-width:520px;margin-bottom:28px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-img{position:relative;overflow:hidden}
.hero-img img{width:100%;height:72vh;display:block;object-fit:cover;object-position:center}
.hero-img::after{content:"";position:absolute;inset:0;box-shadow:inset 0 0 0 1px var(--line)}
.hero-plate{position:absolute;left:-14px;bottom:22px;background:var(--ink);border:1px solid var(--line);padding:10px 16px;font-family:var(--disp);font-weight:600;font-size:13px;letter-spacing:.2em;text-transform:uppercase;color:var(--mute)}
.hero-plate b{color:#fff;letter-spacing:.1em}
@media(max-width:880px){
  .hero{padding-top:116px}
  .hero-grid{grid-template-columns:1fr;gap:28px}
  .hero-img img{height:52vh}
  .hero-plate{left:12px;bottom:12px}
}

/* ---------- barra de datos ---------- */
.stats{border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin-top:48px;background:var(--steel);position:relative;z-index:2}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);max-width:var(--max);margin:0 auto}
.stat{padding:26px 20px;border-left:1px solid var(--line)}
.stat:first-child{border-left:0}
.stat b{display:block;font-family:var(--disp);font-weight:700;font-size:40px;line-height:1;color:#fff}
.stat b span{color:var(--brand)}
.stat small{font-family:var(--disp);font-weight:600;font-size:13px;letter-spacing:.18em;text-transform:uppercase;color:var(--mute)}
@media(max-width:880px){
  .stats-grid{grid-template-columns:1fr 1fr}
  .stat:nth-child(3){border-left:0}
  .stat{border-top:1px solid var(--line);padding:18px 16px}
  .stat:nth-child(-n+2){border-top:0}
  .stat b{font-size:30px}
}

/* ---------- secciones ---------- */
section{padding:84px 0}
@media(max-width:880px){section{padding:56px 0}}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.sec-head h2{font-family:var(--disp);font-weight:700;font-size:clamp(30px,4vw,46px);line-height:1.02;text-transform:uppercase;margin-top:14px}
.sec-head p{max-width:420px;color:var(--mute);font-size:16px}
@media(max-width:880px){.sec-head{flex-direction:column;align-items:flex-start;gap:10px;margin-bottom:28px}}

/* ---------- servicios ---------- */
.svc-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.svc{background:var(--ink);padding:30px 26px;transition:background .2s}
.svc:hover{background:var(--steel)}
.svc svg{width:34px;height:34px;stroke:var(--brand);fill:none;stroke-width:1.6;margin-bottom:16px}
.svc h3{font-family:var(--disp);font-weight:600;font-size:21px;letter-spacing:.04em;text-transform:uppercase;margin-bottom:8px}
.svc p{color:var(--mute);font-size:15px}
.svc-link{display:inline-flex;align-items:center;margin-top:14px;font-family:var(--disp);font-weight:700;font-size:14px;letter-spacing:.08em;text-transform:uppercase;color:var(--brand);border-bottom:2px solid transparent;transition:border-color .2s,gap .2s;gap:0}
.svc-link:hover{border-color:var(--brand)}
@media(max-width:880px){.svc-grid{grid-template-columns:1fr}.svc{padding:22px 20px}}

/* ---------- trayectoria ---------- */
.track{background:var(--paper);color:var(--ink)}
.track .tag{color:#6a6f76;border-color:rgba(0,0,0,.18)}
.track .sec-head p{color:#5c6168}
.marquee{overflow:hidden;position:relative;margin-top:10px;-webkit-mask-image:linear-gradient(to right,transparent,#000 7%,#000 93%,transparent);mask-image:linear-gradient(to right,transparent,#000 7%,#000 93%,transparent)}
.marquee-track{display:flex;gap:20px;width:max-content;animation:marquee 16s linear infinite}
@keyframes marquee{from{transform:translateX(0)}to{transform:translateX(calc(-50% - 10px))}}
.cli{flex:0 0 auto;width:200px;height:200px;background:#fff;border:1px solid rgba(0,0,0,.08);border-radius:10px;display:grid;grid-template-rows:1fr auto;place-items:center;gap:10px;padding:20px;box-shadow:0 6px 18px rgba(0,0,0,.07);transition:transform .28s ease,box-shadow .28s ease}
.cli:hover{transform:translateY(-6px);box-shadow:0 14px 32px rgba(0,0,0,.16)}
.cli img{max-width:150px;max-height:96px;width:auto;height:auto;object-fit:contain;-webkit-user-drag:none;user-select:none;pointer-events:none;transition:transform .28s ease}
.cli:hover img{transform:scale(1.06)}
.cli-mark{font-family:var(--disp);font-weight:700;font-size:23px;letter-spacing:.04em;text-transform:uppercase;color:var(--ink);line-height:1.12;text-align:center}
.cli-name{font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:.06em;color:#555;text-align:center;line-height:1.3}
@media(prefers-reduced-motion:reduce){.marquee-track{animation:none;flex-wrap:wrap;justify-content:center}}
@media(max-width:880px){.cli{width:158px;height:158px}.cli img{max-width:116px;max-height:74px}.cli-mark{font-size:18px}.cli-name{font-size:11px}}

/* ---------- proyectos / galería ---------- */
.proj-scroller{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.proj-row{display:contents}
.proj{background:var(--steel);border:1px solid var(--line);overflow:hidden}
.proj figure{position:relative;overflow:hidden;margin:0;aspect-ratio:1}
.proj img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .5s}
.proj:hover img{transform:scale(1.05)}
.proj figcaption{position:absolute;top:10px;left:10px;z-index:2;background:var(--brand);font-family:var(--disp);font-weight:700;font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:#fff;padding:4px 10px}
.proj-cap{position:absolute;left:0;right:0;bottom:0;padding:34px 16px 14px;background:linear-gradient(to top,rgba(7,8,10,.94) 12%,rgba(7,8,10,.55) 60%,transparent);z-index:2}
.proj-cap h3{font-family:var(--disp);font-weight:700;font-size:18px;text-transform:uppercase;letter-spacing:.03em;line-height:1.05;margin-bottom:3px;color:#fff}
.proj-cap p{color:#c8ccd2;font-size:13px;line-height:1.35}
@media(max-width:880px){
  .proj-scroller{display:flex;flex-direction:row;overflow-x:auto;gap:12px;scroll-snap-type:x mandatory;padding:0 20px 10px;margin:0 -20px;-webkit-overflow-scrolling:touch}
  .proj{flex:0 0 auto;width:80vw;height:80vw;max-width:380px;max-height:380px;scroll-snap-align:center}
  .proj figure{height:100%;width:100%;aspect-ratio:auto}
  .proj img{height:100%;width:100%;object-fit:cover}
  .swipe-hint{display:block!important}
}
.swipe-hint{display:none;color:var(--mute);font-size:13px;margin-top:6px;text-align:center}

/* ---------- ENFOQUE: llaves hidráulicas ---------- */
.tongs{background:#080a0d;position:relative;overflow:hidden;padding:100px 0 90px}
.tongs::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,transparent,var(--brand),transparent)}
.tongs::after{content:"";position:absolute;top:-180px;left:50%;width:600px;height:600px;transform:translateX(-50%);background:radial-gradient(circle,rgba(227,35,26,.08) 0%,transparent 70%);pointer-events:none}
.tongs-badge{display:inline-flex;align-items:center;gap:10px;background:var(--brand);color:#fff;padding:8px 18px;font-family:var(--disp);font-weight:700;font-size:12px;letter-spacing:.22em;text-transform:uppercase;margin-bottom:20px;position:relative;z-index:1}
.tongs-badge::before{content:"★";margin-right:4px}
.tongs-title{font-family:var(--disp);font-weight:700;font-size:clamp(38px,5.5vw,64px);line-height:.98;text-transform:uppercase;color:#fff;margin-bottom:8px;position:relative;z-index:1}
.tongs-title em{font-style:normal;color:var(--brand)}
.tongs-intro{display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:end;margin-bottom:50px;position:relative;z-index:1}
.tongs-intro p{color:#c0c4ca;font-size:17px;line-height:1.6}
.tongs-intro .pill{display:inline-block;margin-top:16px;font-family:var(--disp);font-weight:600;font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:var(--mute);border-left:3px solid var(--brand);padding-left:12px}
.tong-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:2px;position:relative;z-index:1}
.tong{background:linear-gradient(180deg,#0f1114,#0b0c0e);display:flex;flex-direction:column;border:1px solid rgba(227,35,26,.15);transition:border-color .3s,transform .3s,box-shadow .3s}
.tong:hover{border-color:rgba(227,35,26,.5);transform:translateY(-6px);box-shadow:0 20px 40px rgba(227,35,26,.1),0 8px 16px rgba(0,0,0,.5)}
.tong figure{margin:0;aspect-ratio:1/1;background:#050607;overflow:hidden;position:relative}
.tong figure::after{content:"";position:absolute;inset:0;background:linear-gradient(to top,rgba(8,10,13,.4),transparent 40%)}
.tong img{width:100%;height:100%;object-fit:cover;object-position:center;transition:transform .5s}
.tong:hover img{transform:scale(1.08)}
.tong-body{padding:20px 20px 24px;flex:1;display:flex;flex-direction:column;border-top:2px solid var(--brand)}
.tong-tag{font-family:var(--disp);font-weight:700;font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:var(--brand)}
.tong-model{font-size:13px;color:var(--mute);margin:6px 0 16px;min-height:34px}
.tong-cap{margin-top:auto}
.tong-cap b{display:block;font-family:var(--disp);font-weight:700;font-size:42px;line-height:1;color:#fff;text-shadow:0 0 30px rgba(227,35,26,.25)}
.tong-cap small{font-family:var(--disp);font-weight:600;font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--mute)}
.tongs-power{display:flex;align-items:center;gap:24px;margin-top:2px;background:linear-gradient(90deg,rgba(227,35,26,.06),transparent);border:1px solid rgba(227,35,26,.15);padding:22px 26px;position:relative;z-index:1;transition:border-color .3s}
.tongs-power:hover{border-color:rgba(227,35,26,.4)}
.tongs-power img{width:130px;height:85px;object-fit:cover;flex:0 0 auto;border:1px solid rgba(227,35,26,.2)}
.tongs-power h3{font-family:var(--disp);font-weight:700;font-size:20px;text-transform:uppercase;letter-spacing:.03em}
.tongs-power p{color:var(--mute);font-size:14.5px;margin-top:3px}
@media(max-width:880px){
  .tongs{padding:60px 0 50px}
  .tongs-intro{grid-template-columns:1fr;gap:16px;align-items:start}
  .tong-grid{grid-template-columns:1fr 1fr}
  .tong-cap b{font-size:34px}
  .tongs-power{flex-direction:row;flex-wrap:wrap;padding:18px}
  .tongs-power img{width:100px;height:65px}
}

/* ---------- interacciones / animaciones ---------- */
.scroll-progress{position:fixed;top:0;left:0;height:3px;width:0;background:var(--brand);z-index:80;transition:width .08s linear}
.menu a{position:relative}
.menu a::after{content:"";position:absolute;left:0;bottom:-6px;height:2px;width:0;background:var(--brand);transition:width .28s ease}
.menu a:hover::after{width:100%}
.cta-btn{position:relative;overflow:hidden}
.cta-btn::before{content:"";position:absolute;top:0;left:-120%;width:60%;height:100%;background:linear-gradient(100deg,transparent,rgba(255,255,255,.35),transparent);transform:skewX(-18deg);transition:left .6s ease}
.cta-btn:hover::before{left:140%}
.svc svg{transition:transform .35s ease,stroke .2s ease}
.svc:hover svg{transform:scale(1.15) rotate(-4deg)}
.svc,.tong,.proj,.hse-card,.client,.contact-card{transition:transform .25s ease,background .2s ease,box-shadow .25s ease}
.svc:hover{transform:translateY(-4px)}
.proj:hover{transform:translateY(-3px);box-shadow:0 12px 30px rgba(0,0,0,.45);z-index:3}
.client:hover{background:rgba(227,35,26,.05)}
.stat{transition:background .25s ease}
.stat:hover{background:#191c21}
.sec-head h2{position:relative;display:inline-block}
.sec-head h2::after{content:"";position:absolute;left:0;bottom:-8px;height:3px;width:0;background:var(--brand);transition:width .6s ease}
.sec-head.in h2::after{width:54px}
.to-top{position:fixed;right:18px;bottom:84px;z-index:60;width:46px;height:46px;border:1px solid var(--line);background:rgba(17,18,22,.9);color:#fff;font-size:20px;cursor:pointer;opacity:0;pointer-events:none;transition:opacity .3s,background .2s,border-color .2s;backdrop-filter:blur(6px)}
.to-top.show{opacity:1;pointer-events:auto}
.to-top:hover{background:var(--brand);border-color:var(--brand)}
@media(min-width:881px){.to-top{bottom:24px}}
.rv{opacity:0;transform:translateY(18px);transition:opacity .6s cubic-bezier(.2,.7,.2,1),transform .6s cubic-bezier(.2,.7,.2,1)}
.rv.in{opacity:1;transform:none}
/* ---------- animaciones extra ---------- */
/* cascada al revelar tarjetas en cuadrícula */
.svc-grid .svc:nth-child(2),.tong-grid .tong:nth-child(2){transition-delay:.08s}
.svc-grid .svc:nth-child(3),.tong-grid .tong:nth-child(3){transition-delay:.16s}
.svc-grid .svc:nth-child(4),.tong-grid .tong:nth-child(4){transition-delay:.24s}
/* flotación suave de la placa del hero */
.hero-plate{animation:floaty 4.5s ease-in-out infinite}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-6px)}}
/* icono de servicio: gira un poco al pasar el cursor sobre la tarjeta */
.svc:hover svg{transform:rotate(-6deg) scale(1.1)}
/* zoom sutil en imágenes al hacer hover */
.tong:hover img{transform:scale(1.06)}
.about-grid img{transition:transform .6s ease}
.about-grid:hover img{transform:scale(1.04)}
/* brillo pulsante en el botón fijo de cotización (móvil) */
.sticky-cta a{position:relative;animation:ctaglow 2.6s ease-in-out infinite}
@keyframes ctaglow{0%,100%{opacity:1}50%{opacity:.78}}
@media (prefers-reduced-motion:reduce){.rv{opacity:1;transform:none;transition:none}.sec-head h2::after{width:54px}}

/* ---------- HSE / Calidad ---------- */
.hse-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.hse-card{border:1px solid var(--line);background:var(--steel);padding:30px 28px}
.hse-card h3{font-family:var(--disp);font-weight:700;font-size:24px;text-transform:uppercase;margin:12px 0 10px}
.hse-card h3 span{color:var(--brand)}
.hse-card p{color:#c0c4ca;font-size:15.5px}
@media(max-width:880px){.hse-grid{grid-template-columns:1fr}}

/* ---------- nosotros ---------- */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.about-grid img{width:100%;height:42vh;object-fit:cover;border:1px solid var(--line)}
.about-grid h2{font-family:var(--disp);font-weight:700;font-size:clamp(28px,3.6vw,42px);text-transform:uppercase;line-height:1.05;margin:14px 0 14px}
.about-grid p{color:#c0c4ca;font-size:16px;margin-bottom:12px}
@media(max-width:880px){.about-grid{grid-template-columns:1fr;gap:24px}.about-grid img{height:32vh}}

/* ---------- contacto ---------- */
.contact{background:var(--brand)}
.contact-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}
.contact h2{font-family:var(--disp);font-weight:700;font-size:clamp(32px,4.4vw,54px);text-transform:uppercase;line-height:1;color:#fff;margin-bottom:14px}
.contact p{color:#ffd9d6;font-size:17px;max-width:460px}
.contact-card{background:var(--ink);border:1px solid rgba(0,0,0,.3);padding:30px 28px}
.contact-card dl{display:grid;gap:18px}
.contact-card dt{font-family:var(--disp);font-weight:600;font-size:12px;letter-spacing:.22em;text-transform:uppercase;color:var(--mute);margin-bottom:3px}
.contact-card dd{font-size:17px;color:#fff}
.contact-card dd a{border-bottom:1px solid var(--brand)}
.contact-actions{display:flex;gap:12px;margin-top:24px;flex-wrap:wrap}
.btn-dark{background:#fff;color:var(--ink);padding:12px 22px;font-family:var(--disp);font-weight:700;font-size:15px;letter-spacing:.12em;text-transform:uppercase}
.btn-dark:hover{background:#e7e7e7}
@media(max-width:880px){.contact-grid{grid-template-columns:1fr;gap:26px}}

/* ---------- footer ---------- */
footer{border-top:1px solid var(--line);padding:28px 0 96px;background:var(--ink)}
.foot{display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;color:var(--mute);font-size:13.5px}
.foot b{font-family:var(--disp);text-transform:uppercase;letter-spacing:.1em;color:#dadde1}
@media(min-width:881px){footer{padding-bottom:28px}}

/* ---------- CTA fijo móvil ---------- */
.sticky-cta{display:none;position:fixed;left:0;right:0;bottom:0;z-index:60;background:var(--brand);padding:12px 16px calc(12px + env(safe-area-inset-bottom));text-align:center}
.sticky-cta a{font-family:var(--disp);font-weight:700;font-size:17px;letter-spacing:.12em;text-transform:uppercase;color:#fff;display:block}
@media(max-width:880px){.sticky-cta{display:block}}