*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font:400 var(--fs-body)/var(--lh-body) var(--font-body);overflow-x:hidden}a{color:inherit}img{display:block;max-width:100%}button,input,textarea{font:inherit}.shell{width:min(100% - 2*var(--gutter),var(--max-width));margin-inline:auto}.skip{position:fixed;z-index:999;top:8px;left:8px;transform:translateY(-150%);background:var(--paper);padding:.7rem 1rem}.skip:focus{transform:none}.sr-only{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}:focus-visible{outline:var(--focus);outline-offset:3px}.eyebrow,.ref,.spec-head,dt{font:500 var(--fs-eyebrow)/1.4 var(--font-mono);letter-spacing:var(--track-eyebrow);text-transform:uppercase;color:var(--copper)}h1,h2{font-family:var(--font-display);font-weight:400;line-height:var(--lh-heading);letter-spacing:-.02em;text-wrap:balance;margin:0 0 1.5rem}h1{font-size:var(--fs-h1);line-height:var(--lh-tight)}h2{font-size:var(--fs-h2)}h3{font-size:var(--fs-h3);line-height:1.3;margin:0 0 1rem}em{font-weight:400}p{max-width:68ch}.section{padding:var(--section-pad) 0}.bone{background:var(--bone)}.paper{background:var(--paper)}.dark{background:var(--graphite);color:var(--bone);background-image:linear-gradient(rgba(255,255,255,.018) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.018) 1px,transparent 1px);background-size:8px 8px}.dark .eyebrow{color:var(--copper-light)}
#header{height:var(--header-height);position:fixed;z-index:50;top:0;left:0;right:0;color:var(--bone);transition:.25s;background:linear-gradient(to bottom,rgba(17,20,22,.7),transparent)}#header.scrolled{background:var(--bone);color:var(--ink);border-bottom:1px solid var(--rule)}.nav{height:100%;display:flex;align-items:center;gap:2rem}.brand{display:inline-flex;align-items:center;text-decoration:none;white-space:nowrap}.brand b{font:500 1.65rem/1 var(--font-display)}.brand i{height:30px;width:1px;background:var(--copper);margin:0 .75rem}.brand span{font:500 .68rem/1 var(--font-mono);letter-spacing:var(--track-wordmark)}.links{display:flex;gap:1.8rem;margin-left:auto}.links a,.nav-cta{font-size:.84rem;font-weight:500;text-decoration:none}.nav-cta{border:1px solid currentColor;padding:.65rem .9rem;white-space:nowrap}#menu-open{display:none;background:none;border:0;color:inherit}.mobile-menu{position:fixed;inset:0;background:var(--graphite);color:var(--bone);display:none;flex-direction:column;padding:2rem;gap:1rem;z-index:100}.mobile-menu.open{display:flex}.mobile-menu a{font:400 2.6rem/1.1 var(--font-display);text-decoration:none}.mobile-menu button{margin-left:auto;background:none;border:1px solid var(--rule-dark);color:inherit;padding:.6rem 1rem}
.hero{min-height:min(100svh,920px);background:var(--graphite);color:var(--bone);position:relative;display:flex;align-items:end;padding:calc(var(--header-height) + 4rem) 0 5rem;overflow:hidden}.hero>img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center;filter:saturate(.72) brightness(.55);animation:hero-in var(--dur-slow) var(--ease) both}.shade{position:absolute;inset:0;background:linear-gradient(90deg,rgba(17,20,22,.96) 0%,rgba(17,20,22,.78) 48%,rgba(17,20,22,.32) 100%),linear-gradient(0deg,rgba(17,20,22,.68),transparent 55%)}.hero-grid{position:relative;display:grid;grid-template-columns:minmax(0,1.5fr) minmax(320px,.72fr);gap:clamp(3rem,7vw,8rem);align-items:end}.hero-copy .eyebrow{color:var(--copper-light);margin-bottom:1.3rem}.lead{font-size:var(--fs-lead);max-width:62ch;color:#d8d5cf}.actions{display:flex;gap:.75rem;flex-wrap:wrap;margin-top:2rem}.button{height:var(--button-height);display:inline-flex;align-items:center;justify-content:center;padding:0 1.35rem;text-decoration:none;text-transform:uppercase;letter-spacing:var(--track-button);font-size:.78rem;font-weight:600;border:1px solid transparent;cursor:pointer}.light{background:var(--bone);color:var(--graphite)}.ghost{border-color:var(--rule-dark);color:var(--bone)}.spec,.useful{border:1px solid var(--rule-dark);background:rgba(17,20,22,.58);backdrop-filter:blur(6px)}.spec-head{padding:1rem 1.2rem;margin:0;color:var(--copper-light);border-bottom:1px solid var(--rule-dark)}.spec dl,.table,.register{margin:0}.spec dl div,.table div,.register div{display:grid;grid-template-columns:minmax(120px,.65fr) 1.35fr;gap:1rem;padding:1rem 1.2rem;border-bottom:1px solid var(--rule-dark)}.spec dl div:last-child,.table div:last-child,.register div:last-child{border-bottom:0}.spec dt{color:var(--muted-dark);letter-spacing:0;text-transform:none}.spec dd,.table dd,.register dd{margin:0}
.intro{display:grid;grid-template-columns:2fr 7fr;gap:3rem;margin-bottom:4rem}.intro>p{margin-top:.5rem}.intro>div>p{font-size:var(--fs-lead);color:var(--muted)}.dark .intro>div>p{color:var(--muted-dark)}.filters{display:flex;gap:.5rem;flex-wrap:wrap;margin:0 0 2rem}.filters button{min-height:44px;border:1px solid var(--rule);background:transparent;padding:.65rem 1rem;cursor:pointer}.filters button.active{background:var(--graphite);color:var(--bone)}.cards{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-top:1px solid var(--rule);border-left:1px solid var(--rule)}.card{background:var(--paper);border-right:1px solid var(--rule);border-bottom:1px solid var(--rule);min-width:0}.card[hidden]{display:none}.photo{aspect-ratio:4/3;overflow:hidden;background:var(--graphite)}.photo img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease);filter:saturate(.75) contrast(1.05)}.card:hover .photo img{transform:scale(1.04)}.card-copy{padding:1.5rem}.card h3{font:500 1.55rem/1.15 var(--font-display)}.card dl{margin:1.5rem 0}.card dl div{padding:.62rem 0;border-top:1px solid var(--rule)}.card dt{color:var(--muted);margin-bottom:.2rem}.card dd{margin:0;font-size:.86rem;line-height:1.5}.used{font-size:.86rem;color:var(--muted)}.tags{display:flex;flex-wrap:wrap;gap:.35rem}.tags span{font:400 .68rem var(--font-mono);border:1px solid var(--rule);padding:.35rem .5rem}.note{font-size:.82rem;color:var(--muted);margin:1.2rem 0 0}
.timeline{display:grid;grid-template-columns:repeat(4,1fr);position:relative}.timeline:before{content:"";position:absolute;top:2.4rem;left:0;right:0;height:1px;background:var(--copper)}.timeline article{padding:0 2rem 0 0;position:relative}.timeline b{display:flex;align-items:center;justify-content:center;width:4.8rem;height:4.8rem;border:1px solid var(--copper);background:var(--paper);font:400 2.3rem var(--font-display);margin-bottom:2rem}.timeline p{color:var(--muted)}.table{border-top:1px solid var(--rule-dark)}.table div{grid-template-columns:1fr 3fr;padding:1.35rem 0}.table dt{color:var(--copper-light)}.split{display:grid;grid-template-columns:1fr 1fr;margin-top:2rem;border-top:1px solid var(--rule);border-bottom:1px solid var(--rule)}.split article{padding:3rem 3rem 3rem 0}.split article+article{border-left:1px solid var(--rule);padding-left:3rem}.split h3{font:400 2rem/1.1 var(--font-display)}.split a{font-weight:600;text-underline-offset:4px}.company-grid{display:grid;grid-template-columns:2fr 3fr;gap:4rem;margin-top:4rem}.register{border-top:1px solid var(--rule)}.register div{border-color:var(--rule);grid-template-columns:1fr 2fr;padding:1rem 0}.register dt{color:var(--muted)}.form-grid{display:grid;grid-template-columns:2fr 1fr;gap:clamp(3rem,8vw,8rem)}form label{display:block;font:500 .78rem var(--font-mono);letter-spacing:.05em;margin-bottom:1.5rem}input,textarea{display:block;width:100%;border:0;border-bottom:1px solid var(--rule-dark);background:transparent;color:var(--bone);padding:.85rem 0;outline:0}input:focus,textarea:focus{border-color:var(--copper-light)}.field-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 2rem}label small{display:block;color:var(--muted-dark);font-family:var(--font-body);margin-top:.25rem}.consent{font-size:.75rem;color:var(--muted-dark)}.useful{align-self:start}.useful ul{list-style:none;padding:1rem 1.2rem;margin:0}.useful li{padding:.75rem 0;border-bottom:1px solid var(--rule-dark)}.useful>p:last-child{padding:0 1.2rem 1rem}.useful a{color:var(--bone);overflow-wrap:anywhere}
footer{background:var(--graphite);color:var(--muted-dark);border-top:1px solid var(--rule-dark);padding:3rem 0}.footer-grid{display:grid;grid-template-columns:2fr 1fr;gap:3rem}.footer-grid>div:last-child{display:flex;flex-direction:column;align-items:flex-start}.footer-grid a{margin-bottom:.4rem}.footer-grid .brand{color:var(--bone)}.footer-grid p{font-size:.76rem}
.reveal{opacity:0;transform:translateY(16px);transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease)}.reveal.visible{opacity:1;transform:none}@keyframes hero-in{from{transform:scale(1.06)}to{transform:scale(1)}}
@media(max-width:1199px){.cards{grid-template-columns:repeat(2,minmax(0,1fr))}.hero-grid{grid-template-columns:1fr}.spec{max-width:650px}.hero{height:auto;min-height:100svh}.links{display:none}#menu-open{display:block;margin-left:auto}.nav-cta{display:none}}
@media(max-width:899px){.intro,.company-grid,.form-grid{grid-template-columns:1fr}.timeline{grid-template-columns:1fr}.timeline:before{top:0;bottom:0;left:2.4rem;right:auto;width:1px;height:auto}.timeline article{padding:0 0 2.5rem 6.5rem}.timeline b{position:absolute;left:0;top:0}.split{grid-template-columns:1fr}.split article+article{border-left:0;border-top:1px solid var(--rule);padding-left:0}.footer-grid{grid-template-columns:1fr}}
@media(max-width:639px){.hero{padding-top:8rem}.hero>img{object-position:30% center}.shade{background:rgba(17,20,22,.78)}.cards{grid-template-columns:1fr}.intro{gap:1rem;margin-bottom:3rem}.field-grid{grid-template-columns:1fr}.spec dl div,.register div,.table div{grid-template-columns:1fr;gap:.3rem}.brand span{font-size:.58rem}.nav{gap:.5rem}.section{padding:4.5rem 0}.actions{display:grid}.button{width:100%}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.hero>img{animation:none}.reveal{opacity:1;transform:none}.photo img{transition:none}}
@media(min-width:1024px){.hero-copy .eyebrow{white-space:nowrap}}
.spec dd,.table dd,.register dd{min-width:0;overflow-wrap:anywhere}
.legal-page{padding-top:var(--header-height)}.legal-shell{max-width:920px}.legal-shell>h1{color:var(--ink);margin-top:1.5rem}.legal-copy{max-width:760px}.legal-copy section{padding:2rem 0;border-top:1px solid var(--rule)}.legal-copy h2{font-size:clamp(1.5rem,3vw,2.25rem);margin-bottom:.75rem}.legal-copy p{color:var(--muted)}.legal-copy a{text-underline-offset:4px}.error-hero{min-height:100svh}.error-hero .hero-grid{grid-template-columns:minmax(0,850px)}
.useful>p:last-child{padding:0}.contact-options{border-top:1px solid var(--rule-dark);padding:.35rem 1.2rem}.contact-option{display:grid;grid-template-columns:2.5rem minmax(0,1fr);gap:.8rem;align-items:center;padding:.9rem 0;text-decoration:none;border-bottom:1px solid var(--rule-dark)}.contact-option:last-child{border-bottom:0}.contact-icon{display:grid;place-items:center;width:2.5rem;height:2.5rem;border:1px solid var(--rule-dark);color:var(--copper-light)}.contact-icon svg{width:1.15rem;height:1.15rem;fill:none;stroke:currentColor;stroke-width:1.65;stroke-linecap:round;stroke-linejoin:round}.contact-icon.whatsapp svg{fill:currentColor;stroke:none}.contact-option span:last-child{min-width:0}.contact-option small,.contact-option strong{display:block}.contact-option small{margin-bottom:.15rem;color:var(--muted-dark);font-size:.75rem}.contact-option strong{font-size:.94rem;font-weight:500;letter-spacing:.01em}.contact-option:hover strong,.contact-option:focus-visible strong{text-decoration:underline;text-underline-offset:4px}

.gas-cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border-top:1px solid var(--rule);border-left:1px solid var(--rule)}.gas-card{background:var(--paper);border-right:1px solid var(--rule);border-bottom:1px solid var(--rule);min-width:0}.gas-card h3{font:500 1.65rem/1.2 var(--font-display)}.gas-card p,.gas-card dd{font-size:.9rem}.gas-card dl div{border-top:1px solid var(--rule);padding:.65rem 0}.gas-card dt{font:400 .7rem var(--font-mono);color:var(--muted);margin-bottom:.3rem}.gas-card dd{margin:0}.gas-card a{font-size:.85rem;text-underline-offset:4px}.gas-card .photo img{filter:none}.links{gap:1rem}@media(max-width:1199px){.gas-cards{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:639px){.gas-cards{grid-template-columns:1fr}}

/* --- capability strip under the hero --- */
.capstrip{background:var(--graphite);color:var(--bone)}
.capgrid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border-left:1px solid var(--rule-dark)}
.capgrid article{padding:clamp(2.25rem,3.4vw,3.25rem) clamp(1.5rem,2.4vw,2.5rem);border-right:1px solid var(--rule-dark);min-width:0}
.capgrid .ref{font:400 .7rem var(--font-mono);letter-spacing:.12em;color:var(--copper-light);margin:0 0 1.1rem}
.capgrid h3{font:400 clamp(1.4rem,1.9vw,1.9rem)/1.12 var(--font-display);margin:0 0 .85rem}
.capgrid p{color:var(--muted-dark);font-size:.92rem;line-height:1.6;margin:0 0 1.35rem}
.capgrid a{color:var(--bone);font-weight:600;font-size:.84rem;text-underline-offset:4px}
.capgrid a:hover{color:var(--copper-light)}

/* --- section banner image --- */
.band{margin:0 0 clamp(2.5rem,4vw,3.75rem);border:1px solid var(--rule);background:var(--graphite)}
.band img{display:block;width:100%;height:auto;aspect-ratio:12/5;object-fit:cover}
.band figcaption{font:400 .76rem/1.5 var(--font-mono);color:var(--muted);padding:.85rem 1.1rem;border-top:1px solid var(--rule)}
.dark .band figcaption,.graphite .band figcaption{color:var(--muted-dark);border-color:var(--rule-dark)}

/* Gas card typography */
.gas-card .card-copy{padding:clamp(1.6rem,2vw,2.1rem) clamp(1.35rem,1.6vw,1.75rem)}
.gas-card .ref{font:400 .72rem var(--font-mono);letter-spacing:.1em;color:var(--copper);margin:0 0 .55rem}
.gas-card>.card-copy{border-top:2px solid var(--copper)}

@media(max-width:899px){
  .capgrid{grid-template-columns:1fr;border-left:0;border-top:1px solid var(--rule-dark)}
  .capgrid article{border-right:0;border-bottom:1px solid var(--rule-dark)}
  .band img{aspect-ratio:16/10}
}

/* Compact application photographs */
.gas-card{overflow:hidden;display:flex;flex-direction:column}.gas-photo{width:100%;height:190px;overflow:hidden;background:#d9dedc}.gas-photo img{display:block;width:100%;height:100%;object-fit:cover;object-position:center;max-width:100%;filter:saturate(.82);transition:transform .3s ease}.gas-card:hover .gas-photo img{transform:scale(1.025)}.gas-card .card-copy{flex:1;display:flex;flex-direction:column}.gas-card .card-copy>a{margin-top:auto;padding-top:.75rem}.gas-card .card-copy>p:not(.ref){min-height:4.5em}.gas-card dl{margin:1rem 0}.gas-card h3{margin-top:0;min-height:2.4em}.gas-card .card-copy{border-top:2px solid var(--copper)}@media(max-width:639px){.gas-photo{height:180px}.gas-card h3,.gas-card .card-copy>p:not(.ref){min-height:0}}@media(prefers-reduced-motion:reduce){.gas-photo img{transition:none}.gas-card:hover .gas-photo img{transform:none}}

/* Fixed photo frames: independent of intrinsic image dimensions. */
.gas-card>.gas-photo{position:relative;flex:0 0 190px;height:190px;min-height:190px;max-height:190px;overflow:hidden}.gas-card>.gas-photo>img{position:absolute;inset:0;display:block;width:100%;height:100%;max-height:100%;object-fit:cover;object-position:center}@media(max-width:639px){.gas-card>.gas-photo{flex-basis:180px;height:180px;min-height:180px;max-height:180px}}