/* ============================================================
   HERBERT · Sellado de fugas bajo presión — multi-page site
   ============================================================ */
:root{
  --orange:#EE7A24;--orange-2:#F59B4B;--cold:#4CA3C9;
  --navy:#141A24;--navy-2:#1B2331;--panel:#222D3E;--panel-2:#2A3446;
  --steel:#8C96A6;--steel-d:#5C6678;--light:#EEF0F3;--light-2:#E2E5EA;--ink:#141A24;
  --line:rgba(255,255,255,.10);--line-d:rgba(20,26,36,.12);--maxw:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--navy);color:var(--light);
  font-family:"Open Sans",system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  font-size:17px;line-height:1.6;-webkit-font-smoothing:antialiased}
h1,h2,h3,h4,.display{font-family:"Montserrat","Open Sans",sans-serif;font-weight:700;line-height:1.04;letter-spacing:.005em;margin:0}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.eyebrow{font-family:"Montserrat",sans-serif;font-size:12.5px;letter-spacing:.22em;text-transform:uppercase;color:var(--orange);font-weight:600}
.eyebrow.cold{color:var(--cold)}
.btn{display:inline-flex;align-items:center;gap:10px;padding:14px 22px;border-radius:7px;font-weight:600;font-size:15.5px;transition:transform .15s ease,box-shadow .15s ease,border-color .15s ease,color .15s ease}
.btn-primary{background:var(--orange);color:#1a1205;font-family:"Montserrat",sans-serif}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 30px -12px rgba(238,122,36,.75)}
.btn-ghost{border:1px solid var(--line);color:var(--light)}
.btn-ghost:hover{border-color:var(--orange);color:var(--orange);transform:translateY(-2px)}

/* ---------- header + nav ---------- */
header{position:sticky;top:0;z-index:80;background:rgba(20,26,36,.88);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);border-top:3px solid var(--orange)}
.bar{display:flex;align-items:center;gap:20px;height:68px}
.logo{flex:0 0 auto}.logo img{height:33px;width:auto}
nav{margin-left:auto;display:flex;gap:24px;align-items:center}
nav a.link,.dd>button{font-size:14.5px;color:var(--light-2);font-weight:500;padding:6px 0;position:relative;background:none;border:0;font-family:inherit;cursor:pointer;display:inline-flex;align-items:center;gap:6px}
nav a.link::after{content:"";position:absolute;left:0;right:100%;bottom:-2px;height:2px;background:var(--orange);transition:right .25s ease}
nav a.link:hover::after,nav a.link.active::after{right:0}
nav a.link.active{color:#fff}
.dd{position:relative}
.dd>button::after{content:"▾";font-size:11px;color:var(--steel)}
.dd-menu{position:absolute;top:calc(100% + 12px);left:-14px;min-width:250px;background:var(--navy-2);border:1px solid var(--line);border-radius:10px;padding:8px;box-shadow:0 24px 50px -18px rgba(0,0,0,.7);opacity:0;visibility:hidden;transform:translateY(6px);transition:.18s ease;z-index:90}
.dd:hover .dd-menu,.dd:focus-within .dd-menu,.dd.open .dd-menu{opacity:1;visibility:visible;transform:none}
.dd-menu a{display:block;padding:9px 12px;border-radius:7px;font-size:14px;color:var(--light-2)}
.dd-menu a:hover,.dd-menu a.active{background:var(--panel-2);color:#fff}
.lang{display:flex;gap:2px;font-family:"Montserrat",sans-serif;font-size:12.5px;border:1px solid var(--line);border-radius:6px;overflow:hidden}
.lang a{padding:6px 10px;color:var(--steel)}.lang a.on{background:var(--panel-2);color:#fff}.lang a:hover{color:#fff}
.emg{display:inline-flex;align-items:center;gap:9px;background:var(--orange);color:#1a1205;font-weight:700;padding:10px 15px;border-radius:6px;font-family:"Montserrat",sans-serif;font-size:13.5px;white-space:nowrap;transition:transform .15s ease,box-shadow .15s ease}
.emg:hover{transform:translateY(-1px);box-shadow:0 8px 22px -8px rgba(238,122,36,.7)}
.emg .pulse{width:8px;height:8px;border-radius:50%;background:#1a1205;animation:pulse 2s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(26,18,5,.55)}70%{box-shadow:0 0 0 7px rgba(26,18,5,0)}100%{box-shadow:0 0 0 0 rgba(26,18,5,0)}}
.navtoggle{display:none;margin-left:auto;background:none;border:1px solid var(--line);color:var(--light);width:42px;height:38px;border-radius:6px;font-size:18px;cursor:pointer}

/* ---------- hero (home) ---------- */
.hero{position:relative;overflow:hidden;background:radial-gradient(120% 95% at 88% -10%,rgba(238,122,36,.26),transparent 58%),radial-gradient(90% 80% at 0% 120%,rgba(238,122,36,.10),transparent 55%),linear-gradient(180deg,rgba(238,122,36,.05),transparent 40%),var(--navy)}
.hero .wrap{position:relative;padding:72px 24px 64px;display:grid;grid-template-columns:1.08fr .92fr;gap:48px;align-items:center}
.hero h1{font-size:clamp(40px,6vw,74px);letter-spacing:-.01em;margin-top:16px}
.hero h1 .hl{color:var(--orange)}
.lede{margin-top:22px;font-size:clamp(17px,1.5vw,20px);color:var(--light-2);max-width:36ch}
.cta-row{margin-top:30px;display:flex;flex-wrap:wrap;gap:14px}
.creds{margin-top:36px;display:flex;flex-wrap:wrap;gap:12px 26px;padding-top:22px;border-top:1px solid var(--line)}
.cred{display:flex;flex-direction:column;line-height:1.1}
.cred .n{font-family:"Montserrat",sans-serif;font-weight:700;font-size:26px;color:#fff}
.cred .l{font-family:"Montserrat",sans-serif;font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--steel);margin-top:4px}
.hero-photo{position:relative}
.hero-photo .frame{position:relative;border-radius:12px;overflow:hidden;clip-path:polygon(0 0,100% 0,100% 86%,86% 100%,0 100%);box-shadow:0 30px 60px -24px rgba(0,0,0,.7)}
.hero-photo .frame img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3;filter:saturate(1.05)}
.hero-photo .frame::after{content:"";position:absolute;inset:0;background:linear-gradient(200deg,transparent 40%,rgba(20,26,36,.5))}
.hero-photo .tagpill{position:absolute;left:-10px;bottom:22px;background:var(--orange);color:#1a1205;font-family:"Montserrat",sans-serif;font-size:12px;font-weight:600;letter-spacing:.06em;padding:9px 14px;border-radius:5px;box-shadow:0 10px 22px -10px rgba(238,122,36,.8)}
.hero-photo .accent{position:absolute;right:6%;bottom:-14px;width:78%;height:10px;background:var(--orange);box-shadow:0 10px 28px -10px rgba(238,122,36,.8)}

/* ---------- page-hero (subpages) ---------- */
.page-hero{position:relative;overflow:hidden;background:radial-gradient(120% 120% at 92% -20%,rgba(238,122,36,.20),transparent 55%),linear-gradient(180deg,rgba(238,122,36,.05),transparent 45%),var(--navy-2);border-bottom:2px solid var(--orange)}
.page-hero .wrap{padding:40px 24px 52px}
.crumb{font-family:"Montserrat",sans-serif;font-size:12px;letter-spacing:.08em;color:var(--steel);margin-bottom:20px}
.crumb a:hover{color:var(--orange)}.crumb span{color:var(--steel-d)}
.page-hero h1{font-size:clamp(32px,4.6vw,56px);margin-top:10px;max-width:20ch}
.page-hero .sub{margin-top:16px;font-size:clamp(16px,1.5vw,19px);color:var(--light-2);max-width:60ch}

/* ---------- section base ---------- */
section{padding:80px 0}
.sec-head{max-width:64ch;margin-bottom:40px}
.sec-head h2{font-size:clamp(28px,3.4vw,44px);margin-top:12px}
.sec-head p{color:var(--steel);margin:16px 0 0;font-size:17px}
.light-sec{background:var(--light);color:var(--ink)}
.light-sec .sec-head h2{color:var(--ink)}.light-sec .sec-head p{color:var(--steel-d)}

/* ---------- content / prose ---------- */
.content{padding:70px 0}
.content .wrap{max-width:1080px}
.content.narrow .wrap{max-width:820px}
.prose h2{font-size:clamp(24px,2.6vw,34px);margin:0 0 14px}
.prose h3{font-size:20px;margin:30px 0 8px;color:#fff}
.prose p{color:var(--steel);margin:0 0 16px;max-width:70ch}
.prose p b,.prose li b{color:var(--light)}
.prose ul{list-style:none;margin:8px 0 20px;padding:0;max-width:70ch}
.prose ul li{position:relative;padding:9px 0 9px 24px;border-bottom:1px solid var(--line);color:var(--light-2);font-size:15.5px}
.prose ul li::before{content:"▸";position:absolute;left:0;color:var(--orange)}
.light-sec .prose p{color:var(--steel-d)}
.light-sec .prose h3{color:var(--ink)}
.light-sec .prose ul li{color:var(--ink);border-color:var(--line-d)}

.method{display:grid;grid-template-columns:1.3fr .7fr;gap:40px;align-items:start}
.method .fig{position:relative;border-radius:12px;overflow:hidden;border:1px solid var(--line);position:sticky;top:96px}
.method .fig img{width:100%;height:100%;object-fit:cover;aspect-ratio:3/4}
.method .fig figcaption{position:absolute;left:12px;bottom:10px;font-family:"Montserrat",sans-serif;font-size:11px;color:#fff;text-shadow:0 1px 6px rgba(0,0,0,.8)}
.method .fig::after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(20,26,36,.7),transparent 55%)}

.specbar{display:inline-flex;flex-wrap:wrap;gap:8px 22px;margin:6px 0 24px;padding:14px 20px;background:var(--navy-2);border:1px solid var(--line);border-radius:10px;font-family:"Montserrat",sans-serif;font-size:13px;color:var(--cold)}
.specbar b{color:#fff}
.callout{border-left:3px solid var(--orange);background:rgba(238,122,36,.06);padding:16px 20px;border-radius:0 8px 8px 0;margin:22px 0;color:var(--light-2);font-size:15px}
.callout b{color:#fff}

/* ---------- envelope ---------- */
.envelope{background:var(--navy-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.env-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;margin-top:34px}
.gauge{background:linear-gradient(180deg,var(--panel),rgba(34,45,62,.55));border:1px solid var(--line);border-radius:12px;padding:26px 28px 30px}
.gauge .top{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:6px}
.gauge .label{font-family:"Montserrat",sans-serif;font-size:12px;letter-spacing:.2em;text-transform:uppercase;color:var(--steel)}
.gauge .rng{font-family:"Montserrat",sans-serif;font-weight:700;font-size:19px;color:#fff}
.scale{position:relative;height:16px;border-radius:9px;margin:22px 0 12px;overflow:hidden;background:rgba(255,255,255,.06)}
.scale .fill{position:absolute;inset:0;transform:scaleX(0);transform-origin:left;transition:transform 1.3s cubic-bezier(.16,1,.3,1)}
.scale.temp .fill{background:linear-gradient(90deg,var(--cold),#7ec8e6 22%,#e9e2d6 50%,var(--orange-2) 78%,var(--orange))}
.scale.pres .fill{background:linear-gradient(90deg,#39506a,#5c7fa0 40%,var(--orange-2) 82%,var(--orange))}
.in-view .scale .fill{transform:scaleX(1)}
.ends{display:flex;justify-content:space-between;font-family:"Montserrat",sans-serif;font-size:13px;color:var(--light-2)}.ends b{color:#fff}
.gauge .note{margin-top:14px;font-size:13.5px;color:var(--steel)}
.env-foot{margin-top:28px;font-size:15px;color:var(--steel);max-width:74ch}

/* ---------- service cards ---------- */
.svc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.svc{display:block;background:var(--navy-2);border:1px solid var(--line);border-radius:12px;padding:26px 24px;transition:transform .18s ease,border-color .18s ease}
a.svc:hover{transform:translateY(-4px);border-color:rgba(238,122,36,.5)}
.svc .no{font-family:"Montserrat",sans-serif;font-size:12px;color:var(--orange);letter-spacing:.18em}
.svc h3{font-size:22px;margin:12px 0 9px;color:#fff}
.svc p{font-size:14.5px;color:var(--steel);margin:0}
.svc .more{margin-top:14px;font-family:"Montserrat",sans-serif;font-size:12px;color:var(--cold)}
a.svc:hover .more{color:var(--orange)}

/* ---------- applications grid ---------- */
.app-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line-d);border:1px solid var(--line-d);border-radius:12px;overflow:hidden}
.app{background:var(--light);padding:18px 20px;display:flex;align-items:center;gap:12px;transition:background .18s ease}
.app:hover{background:#fff}
.app .dot{width:9px;height:9px;background:var(--orange);flex:0 0 auto;transform:rotate(45deg)}
.app span{font-size:14px;font-weight:500;color:var(--ink)}

/* ---------- gallery ---------- */
.gal-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:8px}
.gal{position:relative;display:block;border-radius:10px;overflow:hidden;border:1px solid var(--line);aspect-ratio:4/3;transition:border-color .18s ease,transform .18s ease}
.gal:hover{border-color:rgba(238,122,36,.7);transform:translateY(-3px)}
.gal figcaption .ar{color:var(--orange);display:inline-block;transition:transform .18s ease}
.gal:hover figcaption .ar{transform:translateX(4px)}
.gal:hover figcaption{color:#fff}
/* orange accents */
.sec-head h2::after{content:"";display:block;width:52px;height:4px;background:var(--orange);border-radius:2px;margin-top:16px}
.page-hero h1::after{content:"";display:block;width:64px;height:4px;background:var(--orange);border-radius:2px;margin-top:18px}
.cta-band h2::after,.cta-band h2::before{display:none}
.gal img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.gal:hover img{transform:scale(1.06)}
.gal figcaption{position:absolute;left:10px;bottom:9px;z-index:2;font-family:"Montserrat",sans-serif;font-size:10.5px;color:#fff;text-shadow:0 1px 6px rgba(0,0,0,.8)}
.gal::after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(20,26,36,.75),transparent 55%)}

/* ---------- sectors ---------- */
.sectors{display:flex;flex-wrap:wrap;gap:12px;margin-top:8px}
.sector{border:1px solid var(--line-d);color:var(--ink);padding:11px 17px;border-radius:40px;font-size:14.5px;font-weight:500;background:#fff;transition:border-color .18s ease,color .18s ease}
.sector:hover{border-color:var(--orange);color:var(--orange)}

/* ---------- standards codes ---------- */
.codes{display:grid;grid-template-columns:1fr 1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:10px;overflow:hidden}
.code{background:var(--navy-2);padding:18px 20px}
.code .k{font-family:"Montserrat",sans-serif;font-weight:700;font-size:20px;color:#fff}
.code .v{font-size:12.5px;color:var(--steel);margin-top:4px}

/* ---------- benefits ---------- */
.bene{display:grid;grid-template-columns:1fr 1fr;gap:44px}
.col-h{font-family:"Montserrat",sans-serif;font-size:12px;letter-spacing:.18em;text-transform:uppercase;margin-bottom:16px}
.bad{color:var(--steel-d)}.good{color:var(--orange)}
.blist{list-style:none;margin:0;padding:0}
.blist li{padding:11px 0 11px 26px;position:relative;border-bottom:1px solid var(--line-d);font-size:15px;color:var(--ink)}
.blist li::before{position:absolute;left:0;top:11px;font-family:"Montserrat",sans-serif;font-weight:600}
.blist.bad li::before{content:"\00d7";color:#b9482f}.blist.good li::before{content:"\2192";color:var(--orange)}

/* ---------- CTA band ---------- */
.cta-band{position:relative;overflow:hidden;background:var(--navy)}
.cta-band .bg{position:absolute;inset:0;z-index:0}
.cta-band .bg img{width:100%;height:100%;object-fit:cover;opacity:.22}
.cta-band .bg::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,var(--navy) 30%,rgba(20,26,36,.65))}
.cta-band .wrap{position:relative;z-index:1;display:flex;flex-wrap:wrap;gap:24px;align-items:center;justify-content:space-between}
.cta-band h2{font-size:clamp(26px,3vw,38px)}
.cta-band p{color:var(--steel);margin:8px 0 0;max-width:46ch}

/* ---------- related ---------- */
.related{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:8px}
.rel{background:var(--navy-2);border:1px solid var(--line);border-radius:10px;padding:18px 20px;transition:border-color .15s ease,transform .15s ease}
.rel:hover{border-color:rgba(238,122,36,.5);transform:translateY(-3px)}
.rel .k{font-family:"Montserrat",sans-serif;font-size:11px;color:var(--orange);letter-spacing:.12em}
.rel .t{font-family:"Montserrat",sans-serif;font-weight:700;font-size:19px;color:#fff;margin-top:6px}

/* ---------- contact ---------- */
.c-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.c-info{display:grid;gap:2px;background:var(--line);border:1px solid var(--line);border-radius:12px;overflow:hidden}
.c-row{background:var(--navy-2);padding:18px 22px;display:flex;gap:16px;align-items:flex-start}
.c-row .k{font-family:"Montserrat",sans-serif;font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--orange);width:104px;flex:0 0 auto;padding-top:3px}
.c-row .val{font-size:15.5px;color:var(--light)}.c-row .val a:hover{color:var(--orange)}
.c-clock{display:flex;align-items:center;gap:16px;color:var(--light-2);margin-top:26px}
.c-clock img{width:70px;height:auto}.c-clock .t{font-family:"Montserrat",sans-serif;font-weight:700;font-size:22px;color:#fff}

/* ---------- footer ---------- */
footer{background:#0F141C;border-top:1px solid var(--line);padding:52px 0 34px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:32px;margin-bottom:34px}
.foot-grid img{height:30px;opacity:.92;margin-bottom:14px}
.foot-grid p{color:var(--steel);font-size:14px;margin:0;max-width:34ch}
.foot-col h4{font-family:"Montserrat",sans-serif;font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--steel-d);margin:0 0 14px}
.foot-col a{display:block;color:var(--light-2);font-size:14px;padding:5px 0}
.foot-col a:hover{color:var(--orange)}
.partner{display:inline-flex;align-items:center;gap:9px;margin-top:20px;flex-wrap:wrap}
.partner .pre{font-family:"Montserrat",sans-serif;font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--steel-d)}
.partner .wm{font-family:"Montserrat",sans-serif;font-weight:700;font-size:16px;color:var(--light-2);letter-spacing:.03em}
.partner:hover .wm{color:var(--orange)}
.partner .hx{flex:0 0 auto;opacity:.9}
.partner .wm-img{height:30px;width:auto;display:block;opacity:.95;transition:opacity .15s ease}
.partner:hover .wm-img{opacity:1}
.foot-btm{border-top:1px solid var(--line);padding-top:20px;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center}
.foot-btm small{color:var(--steel-d);font-size:12.5px}

/* ---------- case studies / references ---------- */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.case{background:var(--navy-2);border:1px solid var(--line);border-radius:12px;padding:24px;display:flex;flex-direction:column;gap:10px;transition:border-color .18s ease,transform .18s ease}
.case:hover{border-color:rgba(238,122,36,.5);transform:translateY(-3px)}
.case h3{font-size:20px;color:#fff;margin:6px 0 8px}
.case .row{display:flex;justify-content:space-between;gap:14px;font-size:14px;border-top:1px solid var(--line);padding-top:9px}
.case .row .k{color:var(--steel)}
.case .row .v{color:#fff;text-align:right}
.case .result{margin-top:12px;color:var(--orange);font-weight:600;font-size:14px;line-height:1.35}
.logos-row{display:flex;flex-wrap:wrap;gap:14px}
.logo-ph{border:1px dashed var(--line);border-radius:8px;padding:16px 24px;color:var(--steel);font-family:"Montserrat",sans-serif;font-size:13px;letter-spacing:.02em}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s ease,transform .7s ease}
.reveal.in-view{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:920px){
  nav{position:fixed;inset:68px 0 auto 0;flex-direction:column;align-items:stretch;gap:0;background:var(--navy-2);border-bottom:1px solid var(--line);padding:8px 0;transform:translateY(-150%);transition:transform .3s ease;margin-left:0;max-height:calc(100vh - 68px);overflow:auto}
  nav.open{transform:none}
  nav a.link,.dd>button{padding:13px 24px;font-size:16px;width:100%;justify-content:space-between}
  nav a.link::after{display:none}
  .dd-menu{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;background:transparent;border:0;border-radius:0;padding:0 24px 8px;min-width:0;display:none}
  .dd.open .dd-menu{display:block}
  .dd-menu a{padding:9px 12px}
  .lang{margin:8px 24px}.emg{margin:8px 24px}
  .navtoggle{display:block}
  .hero .wrap{grid-template-columns:1fr;gap:36px}.hero-photo{max-width:520px}
  .env-grid,.bene,.c-grid,.method{grid-template-columns:1fr}
  .method .fig{position:static}
  .app-grid{grid-template-columns:repeat(2,1fr)}
  .svc-grid,.related{grid-template-columns:1fr}
  .case-grid{grid-template-columns:1fr}
  .codes{grid-template-columns:1fr}
  .gal-grid{grid-template-columns:repeat(2,1fr)}.gal.wide{grid-column:span 3}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:560px){
  .app-grid{grid-template-columns:1fr}
  .gal-grid{grid-template-columns:repeat(2,1fr)}.gal.wide{grid-column:span 2}
  section{padding:58px 0}.content{padding:54px 0}
  .foot-grid{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}.scale .fill{transform:scaleX(1)}
}