:root{--red:#ED1C24;--red2:#D81A21;--red-d:#BB1707;--org:#EB4900;--org-d:#A43300;--ink:#111214;--txt:#373737;--mut:#6b6e73;--bg:#fff;--soft:#F3F3F3;--line:#E6E6E6;--r:22px;--pad:clamp(20px,5vw,72px);--maxw:1360px;--ease:cubic-bezier(.2,.7,.1,1)}
*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%}
html.lenis,html.lenis body{height:auto}.lenis.lenis-smooth{scroll-behavior:auto!important}
body{font-family:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;color:var(--txt);background:var(--bg);line-height:1.6;font-size:17px;overflow-x:hidden}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{font-family:"Manrope","Inter",sans-serif;color:var(--ink);line-height:1.12;letter-spacing:-.035em;font-weight:800}
h1{font-size:clamp(36px,6.2vw,96px)}h2{font-size:clamp(30px,4.6vw,68px)}h3{font-size:clamp(22px,2vw,28px);letter-spacing:-.02em}
p{max-width:62ch}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 var(--pad)}
.sec{padding:clamp(80px,12vw,170px) 0;position:relative}
.label{font:600 12px/1.4 "JetBrains Mono",ui-monospace,monospace;letter-spacing:.14em;text-transform:uppercase;color:var(--red2);display:inline-flex;gap:10px;align-items:center;margin-bottom:22px}
.label:before{content:"";width:28px;height:1px;background:currentColor}
.red{color:var(--red)}.lead{font-size:clamp(18px,1.5vw,21px);color:var(--mut)}
.skip{position:absolute;left:-999px;top:0;background:var(--red);color:#fff;padding:10px 16px;z-index:999}.skip:focus{left:10px}
:focus-visible{outline:2px solid var(--red);outline-offset:3px;border-radius:6px}
/* blueprint grid bg */
.grid-bg{background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);background-size:64px 64px;background-position:-1px -1px}
/* header */
.hdr{position:fixed;inset:0 0 auto;z-index:50;transition:transform .5s var(--ease),background .3s,box-shadow .3s}
.hdr .wrap{display:flex;align-items:center;justify-content:space-between;height:84px;gap:24px}
.hdr.scrolled{background:rgba(255,255,255,.86);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);box-shadow:0 1px 0 var(--line)}
.hdr.hide{transform:translateY(-100%)}
.logo img{height:30px;width:auto}
.nav{display:flex;gap:4px;align-items:center}
.nav a{position:relative;padding:10px 14px;font-weight:500;font-size:15px;color:var(--ink);border-radius:99px}
.nav a:after{content:"";position:absolute;left:14px;right:14px;bottom:6px;height:2px;background:var(--red);transform:scaleX(0);transform-origin:right;transition:transform .45s var(--ease)}
.nav a:hover:after,.nav a[aria-current]:after{transform:scaleX(1);transform-origin:left}
.hdr-cta{display:flex;gap:10px;align-items:center}
.tel{font:600 14px "JetBrains Mono",monospace;color:var(--ink);white-space:nowrap}
.btn{--bg:var(--red2);display:inline-flex;align-items:center;justify-content:center;gap:10px;background:var(--bg);color:#fff;font-weight:600;font-size:15px;line-height:1.2;min-height:48px;padding:13px 24px;white-space:nowrap;border-radius:99px;border:0;cursor:pointer;position:relative;overflow:hidden;isolation:isolate;transition:transform .3s var(--ease)}
.btn:before{content:"";position:absolute;inset:0;background:var(--ink);transform:scaleY(0);transform-origin:bottom;transition:transform .5s var(--ease);z-index:-1;border-radius:inherit}
.btn:hover:before{transform:none}
.btn .arr{transition:transform .4s var(--ease)}.btn:hover .arr{transform:translateX(4px) rotate(-45deg)}
.btn.ghost{background:transparent;color:var(--ink);box-shadow:inset 0 0 0 1.5px var(--ink)}.btn.ghost:hover{color:#fff}
.btn.white{background:#fff;color:var(--ink)}.btn.white:hover{color:#fff}
.burger{display:none;width:48px;height:48px;border-radius:50%;border:0;background:var(--ink);cursor:pointer;position:relative}
.burger span{position:absolute;left:15px;right:15px;height:2px;background:#fff;transition:transform .4s var(--ease)}
.burger span:first-child{top:19px}.burger span:last-child{top:27px}
.menu-open .burger span:first-child{transform:translateY(4px) rotate(45deg)}.menu-open .burger span:last-child{transform:translateY(-4px) rotate(-45deg)}
.mnav{position:fixed;inset:0;background:var(--ink);z-index:40;padding:120px var(--pad) 40px;display:flex;flex-direction:column;justify-content:space-between;clip-path:circle(0 at calc(100% - 48px) 42px);transition:clip-path .8s var(--ease);visibility:hidden}
.menu-open .mnav{clip-path:circle(150% at calc(100% - 48px) 42px);visibility:visible}
.mnav a.big{display:block;padding:4px 0;font:800 clamp(32px,9vw,60px)/1.2 Manrope,sans-serif;color:#fff;letter-spacing:-.03em}
.mnav a.big span{color:var(--red);font:500 13px "JetBrains Mono",monospace;vertical-align:super;margin-right:10px}
.mnav .mfoot{color:#aaa;font-size:15px}.mnav .mfoot a{color:#fff;display:block}
.menu-open .hdr{background:transparent;box-shadow:none}.menu-open .hdr .logo img{filter:brightness(0) invert(1)}
/* hero */
.hero{min-height:100svh;display:flex;align-items:center;padding:120px 0 60px;position:relative;overflow:hidden}
.hero .wrap{display:grid;grid-template-columns:.95fr 1.05fr;gap:clamp(24px,4vw,64px);align-items:center;width:100%}

.hero p.lead{margin:30px 0 40px}
.hero .ctas{display:flex;gap:12px;flex-wrap:wrap}
.hero-meta{display:flex;gap:28px;margin-top:56px;font:500 12px "JetBrains Mono",monospace;letter-spacing:.08em;color:var(--mut);text-transform:uppercase;flex-wrap:wrap}
.hero-meta b{color:var(--ink);display:block;font-size:13px}
.hero-fade{position:absolute;inset:0;background:radial-gradient(ellipse at 70% 50%,transparent 30%,#fff 75%);pointer-events:none}
.scroll-cue{position:absolute;left:50%;bottom:26px;transform:translateX(-50%);font:500 11px "JetBrains Mono",monospace;letter-spacing:.2em;color:var(--mut);display:flex;flex-direction:column;align-items:center;gap:10px}
.scroll-cue i{width:1px;height:46px;background:linear-gradient(var(--red),transparent);animation:cue 2s infinite}
@keyframes cue{0%{transform:scaleY(0);transform-origin:top}50%{transform:scaleY(1);transform-origin:top}51%{transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}
/* HVAC svg */
.hvac{width:115%;max-width:none;height:auto;overflow:visible;margin-left:-5%}@media(max-width:1100px){.hvac{width:100%;margin:0}}
.hvac .ink{fill:none;stroke:var(--ink);stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.hvac .thin{fill:none;stroke:#9aa0a6;stroke-width:1;stroke-dasharray:3 5}
.hvac .dim{font:500 9px "JetBrains Mono",monospace;fill:var(--mut);letter-spacing:.08em}
.hvac .flow{fill:none;stroke-width:4;stroke-linecap:round;stroke-dasharray:10 16;animation:flow 1.2s linear infinite}
.hvac .flow.ret{animation-direction:reverse;opacity:.55}
.hvac .air{fill:none;stroke:var(--red);stroke-width:1.6;stroke-linecap:round;stroke-dasharray:22 40;animation:flow 1.6s linear infinite;opacity:.8}
@keyframes flow{to{stroke-dashoffset:-104}}
.fan{transform-box:fill-box;transform-origin:center;animation:spin 2.4s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.pulse{transform-box:fill-box;transform-origin:center;animation:pulse 2.4s var(--ease) infinite}
@keyframes pulse{0%,100%{opacity:.25}50%{opacity:1}}
.flame{transform-box:fill-box;transform-origin:bottom;animation:flame .9s ease-in-out infinite alternate}
@keyframes flame{to{transform:scaleY(.75) scaleX(1.1)}}
/* marquee */
.marq{border-block:1px solid var(--line);padding:24px 0;overflow:hidden;white-space:nowrap;background:#fff;display:flex}
.marq .trk{display:flex;flex:none;gap:56px;animation:marq 40s linear infinite;padding-right:56px;list-style:none}
.marq span{font:700 clamp(18px,2vw,26px) Manrope,sans-serif;color:var(--ink);letter-spacing:-.02em;display:inline-flex;align-items:center;gap:56px}
.marq span:after{content:"";width:9px;height:9px;background:var(--red);border-radius:50%}
.marq:hover .trk{animation-play-state:paused}
@keyframes marq{to{transform:translateX(-100%)}}
/* intro statement */
.statement{font:700 clamp(26px,3.6vw,54px)/1.22 Manrope,sans-serif;letter-spacing:-.03em;color:var(--ink);max-width:22ch}
.statement .w{opacity:.15}
/* stats */
.stats{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);margin-top:80px}
.stat{padding:36px 28px 10px 0;border-right:1px solid var(--line)}.stat:last-child{border:0}.stat+.stat{padding-left:28px}
.stat b{display:block;font:800 clamp(44px,5.6vw,88px)/1.1 Manrope,sans-serif;color:var(--ink);letter-spacing:-.05em}
.stat b sup{color:var(--red);font-size:.45em;vertical-align:top;margin-left:4px}
.stat>span{font-size:15px;color:var(--mut)}
/* services cards */
.svc-head{display:flex;justify-content:space-between;align-items:end;gap:40px;margin-bottom:60px;flex-wrap:wrap}
.cards{display:grid;grid-template-columns:repeat(6,1fr);gap:18px}
.card{grid-column:span 2;position:relative;background:var(--soft);border-radius:var(--r);padding:34px;min-height:380px;display:flex;flex-direction:column;justify-content:space-between;overflow:hidden;isolation:isolate;transition:transform .6s var(--ease),color .4s}
.card.wide{grid-column:span 3}
.card:before{content:"";position:absolute;inset:0;background:var(--ink);transform:scaleY(0);transform-origin:bottom;transition:transform .7s var(--ease);z-index:-1}
.card:hover:before{transform:none}.card:hover{color:#bbb}.card:hover h3{color:#fff}
.card .num{font:500 12px "JetBrains Mono",monospace;color:var(--red2);letter-spacing:.1em}
.card .ico{width:84px;height:84px;margin:24px 0}
.card .ico *{fill:none;stroke:var(--ink);stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;transition:stroke .4s}
.card:hover .ico *{stroke:#fff}.card .ico .r{stroke:var(--red)!important}
.card .ico .spin{transform-box:fill-box;transform-origin:center;transition:transform 1.2s var(--ease)}
.card:hover .ico .spin{transform:rotate(360deg)}
.card .ico .wave{stroke-dasharray:60;stroke-dashoffset:60;transition:stroke-dashoffset .8s var(--ease)}
.card:hover .ico .wave{stroke-dashoffset:0}
.card p{font-size:15px;margin-top:12px}
.card .go{position:absolute;right:28px;top:28px;width:46px;height:46px;border-radius:50%;border:1px solid currentColor;display:grid;place-items:center;transition:transform .5s var(--ease),background .4s}
.card:hover .go{background:var(--red);border-color:var(--red);color:#fff;transform:rotate(-45deg)}
/* process pinned */
.proc{background:var(--ink);color:#c9c9c9;overflow:hidden}
.proc h2{color:#fff}
.proc .grid-bg{position:absolute;inset:0;opacity:.07;background-image:linear-gradient(#fff 1px,transparent 1px),linear-gradient(90deg,#fff 1px,transparent 1px)}
.ptrack{display:flex;gap:22px;margin-top:70px;width:max-content;padding-right:var(--pad)}
.pstep{width:min(400px,78vw);border:1px solid #2b2d31;border-radius:var(--r);padding:34px;min-height:320px;display:flex;flex-direction:column;background:#17181b}
.pstep b{font:800 76px/1.1 Manrope,sans-serif;color:transparent;-webkit-text-stroke:1.5px var(--red);letter-spacing:-.04em}
.pstep h3{color:#fff;margin:auto 0 10px}
.pbar{height:2px;background:#2b2d31;margin-top:40px;position:relative}.pbar i{position:absolute;inset:0;background:var(--red);transform-origin:left;transform:scaleX(0)}
/* blueprint */
.bp-wrap{display:grid;grid-template-columns:1fr 1.15fr;gap:60px;align-items:center}
.bp{width:100%;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:20px}
.bp .d{fill:none;stroke:var(--ink);stroke-width:1.4;stroke-linecap:round;stroke-linejoin:round}
.bp .d.r{stroke:var(--red)}.bp .d.t{stroke:#9aa0a6;stroke-width:.8;stroke-dasharray:3 4}
.bp text{font:500 9px "JetBrains Mono",monospace;fill:var(--mut)}
.js .bp .fill{opacity:0}
.list-check{list-style:none;margin-top:28px;display:grid;gap:12px}
.list-check li{padding-left:30px;position:relative}
.list-check li:before{content:"";position:absolute;left:0;top:.55em;width:16px;height:2px;background:var(--red)}
/* energy bars */
.eclass{display:grid;gap:8px;margin-top:30px}
.eclass div{height:38px;border-radius:0 99px 99px 0;display:flex;align-items:center;padding-left:16px;color:#fff;font:800 16px Manrope,sans-serif;transform-origin:left}
/* thermal */
.thermal{position:relative;border-radius:var(--r);overflow:hidden;aspect-ratio:4/3;background:#0d0d10}
.thermal svg{position:absolute;inset:0;width:100%;height:100%}
/* sound */
.sound path{fill:none;stroke:var(--red);stroke-width:2;stroke-linecap:round}
/* duotone images */
.duo{position:relative;overflow:hidden;border-radius:var(--r);background:var(--red)}
.duo img{width:100%;height:100%;object-fit:cover;filter:grayscale(1) contrast(1.15) brightness(1.05);mix-blend-mode:multiply;transition:transform 1.2s var(--ease)}
.duo:after{content:"";position:absolute;inset:0;background:linear-gradient(160deg,transparent 40%,rgba(17,18,20,.55));pointer-events:none}
.duo:hover img{transform:scale(1.05)}
.duo figcaption{position:absolute;left:18px;bottom:16px;color:#fff;font:500 12px "JetBrains Mono",monospace;letter-spacing:.08em;z-index:2;text-transform:uppercase}
/* certs */
.certs{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}
.cert{border:1px solid var(--line);border-radius:18px;padding:22px;display:flex;flex-direction:column;gap:14px;transition:border-color .3s,transform .5s var(--ease);background:#fff}
.cert:hover{border-color:var(--red);transform:translateY(-6px)}
.cert svg{width:36px;height:36px}.cert svg *{fill:none;stroke:var(--red);stroke-width:1.6}
.cert b{color:var(--ink);font:700 16px/1.25 Manrope,sans-serif}.cert span{font-size:13px;color:var(--mut)}
/* CTA */
.cta{background:var(--red);color:#fff;border-radius:calc(var(--r)*1.5);padding:clamp(48px,8vw,120px) clamp(28px,6vw,90px);position:relative;overflow:hidden}
.cta h2{color:#fff;max-width:14ch}.cta p{opacity:.9;margin:20px 0 36px}
.cta .fanbig{position:absolute;right:-80px;bottom:-80px;width:min(460px,60vw);opacity:.22}
.cta .fanbig *{fill:none;stroke:#fff;stroke-width:1.2}
/* page hero */
.phero{padding:190px 0 90px;position:relative;overflow:hidden}
.phero h1{font-size:clamp(36px,7vw,112px);max-width:15ch}
.phero .lead{margin-top:28px}
.crumb{font:500 12px "JetBrains Mono",monospace;color:var(--mut);letter-spacing:.1em;text-transform:uppercase;margin-bottom:30px}.crumb a:hover{color:var(--red)}
/* service detail */
.sdet{display:grid;grid-template-columns:260px 1fr;gap:60px}
.sidx{position:sticky;top:110px;align-self:start;display:grid;gap:4px}
.sidx a{padding:10px 0;border-bottom:1px solid var(--line);font-size:15px;color:var(--mut);display:flex;gap:12px;transition:color .3s,padding .4s var(--ease)}
.sidx a span{font:500 11px "JetBrains Mono",monospace;color:var(--red);padding-top:4px}
.sidx a:hover,.sidx a.on{color:var(--ink);padding-left:8px}
.sblock{padding:0 0 110px;scroll-margin-top:110px}
.sblock .row{display:grid;grid-template-columns:1.1fr 1fr;gap:40px;margin-top:30px;align-items:start}
.sblock h2{font-size:clamp(32px,4vw,56px)}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
.chip{border:1px solid var(--line);border-radius:99px;padding:8px 16px;font-size:14px;background:#fff;cursor:default;transition:all .3s}
button.chip{cursor:pointer;font:inherit;font-size:14px;color:var(--ink)}
.chip:hover,.chip.on{background:var(--ink);color:#fff;border-color:var(--ink)}
.gal{display:grid;grid-template-columns:1fr 1fr;gap:12px}.gal .duo{aspect-ratio:1}
/* references */
.refs{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line);border-left:1px solid var(--line)}
.ref{border-right:1px solid var(--line);border-bottom:1px solid var(--line);padding:36px 30px;min-height:210px;display:flex;flex-direction:column;justify-content:space-between;position:relative;overflow:hidden;transition:color .4s}
.ref:before{content:"";position:absolute;inset:0;background:var(--red);clip-path:circle(0 at var(--x,50%) var(--y,50%));transition:clip-path .7s var(--ease);z-index:-1}
.ref{isolation:isolate}.ref:hover:before{clip-path:circle(150% at var(--x,50%) var(--y,50%))}
.ref:hover,.ref:hover h3,.ref:hover small{color:#fff}
.ref small{font:500 12px "JetBrains Mono",monospace;letter-spacing:.1em;text-transform:uppercase;color:var(--red2)}
.ref.hidden{display:none}
/* faq */
.faq details{border-bottom:1px solid var(--line);padding:26px 0}
.faq summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;gap:20px;font:700 clamp(19px,1.6vw,23px) Manrope,sans-serif;color:var(--ink)}
.faq summary::-webkit-details-marker{display:none}
.faq summary i{width:30px;height:30px;flex:none;border-radius:50%;border:1px solid var(--line);position:relative;transition:transform .4s var(--ease),background .3s}
.faq summary i:before,.faq summary i:after{content:"";position:absolute;left:50%;top:50%;width:12px;height:1.5px;background:var(--ink);transform:translate(-50%,-50%)}
.faq summary i:after{transform:translate(-50%,-50%) rotate(90deg)}
.faq details[open] summary i{transform:rotate(45deg);background:var(--red);border-color:var(--red)}.faq details[open] summary i:before,.faq details[open] summary i:after{background:#fff}
.faq details p{margin-top:14px;color:var(--mut)}
/* timeline about */
.tl{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:60px}
.tl div{border-top:2px solid var(--ink);padding-top:22px}.tl b{font:800 40px Manrope,sans-serif;color:var(--red);letter-spacing:-.03em}
/* docs */
.docs{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.docs button{border:0;padding:0;cursor:zoom-in;background:var(--soft);border-radius:16px;overflow:hidden;aspect-ratio:3/4}
.docs img{width:100%;height:100%;object-fit:cover;transition:transform .8s var(--ease)}.docs button:hover img{transform:scale(1.06)}
.lb{position:fixed;inset:0;background:rgba(17,18,20,.92);z-index:100;display:grid;place-items:center;padding:30px;opacity:0;pointer-events:none;transition:opacity .4s}
.lb.on{opacity:1;pointer-events:auto}.lb img{max-height:88vh;width:auto;border-radius:10px}
.lb button{position:absolute;top:20px;right:20px;width:52px;height:52px;border-radius:50%;border:0;background:#fff;font-size:24px;cursor:pointer}
/* contact */
.cgrid{display:grid;grid-template-columns:1fr 1.1fr;gap:60px}
.cinfo{display:grid;gap:0}
.cinfo a,.cinfo div{display:flex;justify-content:space-between;gap:20px;padding:22px 0;border-bottom:1px solid var(--line);align-items:baseline;flex-wrap:wrap}
.cinfo small{font:500 11px "JetBrains Mono",monospace;letter-spacing:.12em;text-transform:uppercase;color:var(--mut)}
.cinfo strong{font:700 clamp(18px,1.6vw,22px) Manrope,sans-serif;color:var(--ink);text-align:right}
.cinfo a:hover strong{color:var(--red)}
form.cf{background:var(--soft);border-radius:var(--r);padding:clamp(26px,4vw,48px);display:grid;gap:18px;grid-template-columns:1fr 1fr}
.f{display:flex;flex-direction:column;gap:8px}.f.full{grid-column:1/-1}
.f label{font:500 12px "JetBrains Mono",monospace;letter-spacing:.08em;text-transform:uppercase;color:var(--mut)}
.f input,.f select,.f textarea{font:inherit;font-size:16px;border:0;border-bottom:1.5px solid #cfd2d6;background:transparent;padding:12px 0;color:var(--ink);border-radius:0;transition:border-color .3s}
.f input:focus,.f select:focus,.f textarea:focus{outline:none;border-color:var(--red)}
.f textarea{min-height:120px;resize:vertical}
.fnote{font-size:13px;color:var(--mut);grid-column:1/-1}
.map{border-radius:var(--r);overflow:hidden;margin-top:60px;height:420px;filter:grayscale(1) contrast(1.05);border:1px solid var(--line)}
.map iframe{width:100%;height:100%;border:0}
/* footer */
.ftr{background:var(--ink);color:#9a9ca1;padding:110px 0 30px;margin-top:0;position:relative;overflow:hidden}
.ftr .big{font:800 clamp(38px,7.5vw,120px)/1.08 Manrope,sans-serif;color:#fff;letter-spacing:-.05em;margin-bottom:80px}
.ftr .big a{color:var(--red);display:inline-block;transition:transform .5s var(--ease)}.ftr .big a:hover{transform:translateX(10px)}
.fcols{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;font-size:15px}
.fcols h4{font:500 11px "JetBrains Mono",monospace;letter-spacing:.14em;text-transform:uppercase;color:#fff;margin-bottom:18px}
.fcols a{display:block;padding:3px 0;transition:color .3s}.fcols a:hover{color:#fff}
.fbot{display:flex;justify-content:space-between;gap:20px;border-top:1px solid #2b2d31;margin-top:70px;padding-top:26px;font-size:13px;flex-wrap:wrap}
.ftr .logo img{height:26px;margin-bottom:22px}
/* reveal defaults (JS enhances) */
.js .rv{opacity:0;transform:translateY(40px)}
/* page transition */
.pt{position:fixed;inset:0;background:var(--red);z-index:200;transform:scaleY(0);transform-origin:bottom;pointer-events:none}
@view-transition{navigation:auto}
::view-transition-old(root){animation:.35s var(--ease) both vtout}
::view-transition-new(root){animation:.5s var(--ease) both vtin}
@keyframes vtout{to{opacity:0;transform:translateY(-20px)}}@keyframes vtin{from{opacity:0;transform:translateY(30px)}}
/* responsive */
@media (max-width:1100px){.nav,.tel{display:none}.burger{display:block}.hero .wrap{grid-template-columns:1fr}.hero-art{order:-1;max-width:640px}.hero{padding-top:110px}
.cards .card,.cards .card.wide{grid-column:span 3}.certs{grid-template-columns:repeat(3,1fr)}.bp-wrap,.cgrid{grid-template-columns:1fr}.fcols{grid-template-columns:1fr 1fr}.sdet{grid-template-columns:1fr}.sidx{display:none}}
@media (max-width:720px){body{font-size:16px}.hdr .wrap{height:72px}.logo img{height:22px}.hdr-cta .btn{display:none}
.stats{grid-template-columns:1fr 1fr}.stat{border-right:0;border-bottom:1px solid var(--line);padding:26px 0!important}
.cards .card,.cards .card.wide{grid-column:1/-1;min-height:300px}.certs{grid-template-columns:1fr 1fr}.refs{grid-template-columns:1fr}
.sblock .row{grid-template-columns:1fr}.tl{grid-template-columns:1fr}.docs{grid-template-columns:1fr 1fr}form.cf{grid-template-columns:1fr}.fcols{grid-template-columns:1fr}
.phero{padding:140px 0 60px}.scroll-cue{display:none}.hero-meta{gap:18px;margin-top:36px}.cinfo strong{text-align:left}}
/* v2 additions */
.ln-mask{padding:.18em .06em .22em;margin:-.18em -.06em -.22em}
.ln{padding-bottom:0}
.lang{display:inline-flex;border:1px solid var(--line);border-radius:99px;padding:3px;gap:2px;background:#fff}
.lang a{font:600 12px/1 "JetBrains Mono",monospace;letter-spacing:.08em;padding:0 10px;min-width:40px;height:34px;display:grid;place-items:center;border-radius:99px;color:var(--mut);transition:background .3s,color .3s}
.lang a[aria-current]{background:var(--ink);color:#fff}.lang a:not([aria-current]):hover{color:var(--ink)}
.mnav .lang{background:transparent;border-color:#33353a;margin-bottom:22px}.mnav .lang a{height:44px;min-width:52px;font-size:13px}.mnav .lang a[aria-current]{background:#fff;color:var(--ink)}
.mfoot a{padding:6px 0}
.hero-meta{list-style:none}.ptrack,.tl,.refs,.chips{list-style:none}
.cert h3{font:700 16px/1.3 Manrope,sans-serif;letter-spacing:-.01em}
.fh{font:500 12px "JetBrains Mono",monospace;letter-spacing:.14em;text-transform:uppercase;color:#fff;margin-bottom:18px}
.fcols a{padding:6px 0}.fsm{margin-top:10px}
.fh2{font-size:clamp(24px,2.4vw,32px)}
.lw{color:#fff!important}.cta .label{color:#fff}
.ctas{display:flex;gap:12px;flex-wrap:wrap}
.btn.outline-w{background:transparent;color:#fff;box-shadow:inset 0 0 0 1.5px #fff}
.sec-tight{padding-top:0}.pt0{padding-top:0!important}
.mt{margin-top:24px}.mt2{margin-top:30px}.mt3{margin-top:60px}.mb{margin-bottom:56px}.mb0{margin:0 0 40px}.m0{margin:0}.rel{position:relative}
.panel{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:clamp(22px,3vw,40px)}
.bp-wrap.end{align-items:end}.bp-wrap.start{align-items:start}
.narrow{max-width:820px}
dl.cinfo>div{display:flex;justify-content:space-between;gap:20px;padding:20px 0;border-bottom:1px solid var(--line);align-items:baseline;flex-wrap:wrap}
dl.cinfo dt{font:500 12px "JetBrains Mono",monospace;letter-spacing:.1em;text-transform:uppercase;color:var(--mut)}
dl.cinfo dd{font:700 clamp(17px,1.6vw,22px)/1.35 Manrope,sans-serif;color:var(--ink);text-align:right}
dl.cinfo dd a{display:inline-block;padding:4px 0;transition:color .3s}dl.cinfo dd a:hover{color:var(--red2)}
.tl h3{margin:10px 0}
.ref h3{font-size:clamp(20px,1.8vw,26px)}
.hero-copy{min-width:0}
.sidx a{min-height:44px;align-items:center}
.card h3{line-height:1.2}
.chip{line-height:1.3}
button.chip{min-height:44px}
@media (min-width:1700px){.hero .wrap{max-width:1600px}.hvac{width:105%}}
@media (max-width:1100px){.lang{display:none}.mnav .lang{display:inline-flex}.hero-art{max-width:600px;width:100%;margin:0 auto}}
@media (max-width:720px){.btn{font-size:15px;padding:12px 20px;width:auto}.hero .ctas .btn{flex:1 1 auto}.cta .ctas .btn{flex:1 1 auto}
.sec{padding:72px 0}.phero{padding:124px 0 44px}.mb{margin-bottom:36px}.svc-head{margin-bottom:36px}
.card{padding:26px;min-height:0!important;gap:8px}.card .ico{width:64px;height:64px;margin:12px 0}.card .go{right:22px;top:22px;width:44px;height:44px}
dl.cinfo dd{text-align:left}.ftr{padding-top:80px}.ftr .big{margin-bottom:56px}.map{height:320px;margin-top:40px}
.pstep{min-height:0;padding:26px}.pstep b{font-size:56px}.ptrack{margin-top:40px}
.cta{padding:44px 24px}.cta .fanbig{opacity:.14}
.hero{padding:96px 0 40px;min-height:auto}.hero-meta{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.sidx{display:none}.sblock{padding-bottom:72px}.stats{margin-top:48px}}
@media (max-width:380px){.hero-meta{grid-template-columns:1fr}.btn{padding:12px 18px}}
@media (prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important}.js .rv{opacity:1;transform:none}.marq .trk{animation:none}}
/* tap targets */
.fcols a{padding:10px 0}.mfoot a{padding:10px 0}
.crumb a{display:inline-block;padding:12px 0}
.logo{display:inline-flex;align-items:center;min-height:44px}
.fcols a,.mfoot a,dl.cinfo dd a{display:flex;align-items:center;min-height:44px;padding:0}dl.cinfo dd a{display:inline-flex}
/* ===== v3 header switch + mobile-first pass ===== */
.hdr-cta{gap:12px}
.lang{height:48px;padding:4px;border:1px solid #d9dbde;gap:0;align-items:center}
.lang a{height:38px;min-width:46px;padding:0 12px;font:600 13px/1 "JetBrains Mono",monospace;letter-spacing:.06em}
.mbar{display:none}
.mcta{display:grid;gap:10px;margin-top:4px}.mcta .btn{width:100%}
.mmail{display:block;color:#9a9ca1;margin-top:14px;min-height:44px;line-height:44px}
@media (max-width:1100px){
 .hdr .lang{display:inline-flex}.hdr-cta .btn,.tel{display:none}
 .burger{width:44px;height:44px}.burger span{left:13px;right:13px}.burger span:first-child{top:18px}.burger span:last-child{top:25px}
 .hdr .lang{height:44px;padding:3px}.hdr .lang a{height:36px;min-width:40px;padding:0 10px;font-size:12px}
 .menu-open .hdr .lang{border-color:#33353a;background:transparent}.menu-open .hdr .lang a{color:#9a9ca1}.menu-open .hdr .lang a[aria-current]{background:#fff;color:var(--ink)}
 .mnav .mfoot>.lang{display:none}
 .mbar{display:grid;grid-template-columns:1fr 1.4fr;gap:10px;position:fixed;left:0;right:0;bottom:0;z-index:45;padding:10px var(--pad) calc(10px + env(safe-area-inset-bottom));background:rgba(255,255,255,.92);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);box-shadow:0 -1px 0 var(--line);transform:translateY(110%);transition:transform .45s var(--ease)}
 .show-bar .mbar{transform:none}.menu-open .mbar{transform:translateY(110%)}
 .mbar .btn{width:100%;padding:12px 14px;gap:8px}
 .ftr{padding-bottom:90px}
 .hero .wrap{grid-template-columns:1fr}.hero-art{order:2;max-width:620px;margin:8px auto 0;width:100%}
 .hvac{width:100%;margin:0}
 .ptrack{flex-direction:column;width:auto;padding:0 0 0 28px;gap:14px;position:relative;transform:none!important}
 .ptrack:before{content:"";position:absolute;left:6px;top:8px;bottom:8px;width:2px;background:linear-gradient(var(--red2),#2b2d31)}
 .pstep{width:100%;position:relative}
 .pstep:before{content:"";position:absolute;left:-28px;top:30px;width:14px;height:14px;border-radius:50%;background:var(--ink);box-shadow:0 0 0 2px var(--red2)}
 .proc .pbar{display:none}
}
@media (max-width:720px){
 :root{--pad:20px;--r:18px}
 body{font-size:16px}
 .hdr .wrap{height:68px;gap:10px}.logo img{height:20px}.hdr-cta{gap:8px}
 h1{font-size:clamp(34px,9.6vw,44px);letter-spacing:-.035em}.phero h1{font-size:clamp(34px,9.6vw,44px)}
 h2{font-size:clamp(28px,8vw,36px)}h3{font-size:20px}
 .lead{font-size:17px}
 .label{margin-bottom:16px}
 .sec{padding:64px 0}.phero{padding:108px 0 40px}.crumb{margin-bottom:14px}
 .hero{padding:96px 0 28px}
 .hero p.lead{margin:20px 0 26px}
 .hero .ctas,.cta .ctas,.phero .ctas{flex-direction:column;align-items:stretch}.hero .ctas .btn,.cta .ctas .btn,.phero .ctas .btn{width:100%}
 .hero-meta{grid-template-columns:repeat(3,1fr);gap:10px;margin-top:28px;font-size:10px;letter-spacing:.04em}
 .hero-meta li{border-top:1px solid var(--line);padding-top:10px}.hero-meta b{font-size:13px}
 .scroll-cue{display:none}
 .marq{padding:18px 0}.marq span{font-size:17px;gap:40px}.marq .trk{gap:40px;padding-right:40px}
 .statement{font-size:24px;line-height:1.3}
 .stats{grid-template-columns:1fr 1fr;margin-top:36px;border-top:1px solid var(--line)}
 .stat{padding:20px 0!important;border-bottom:1px solid var(--line)}.stat:nth-child(odd){padding-right:14px!important;border-right:1px solid var(--line)}.stat:nth-child(even){padding-left:16px!important}
 .stat b{font-size:40px}.stat>span{font-size:14px}
 .svc-head{flex-direction:column;align-items:flex-start;gap:20px;margin-bottom:28px}
 .cards{gap:12px}.card{padding:22px;min-height:0!important}.card .ico{width:56px;height:56px;margin:14px 0 10px}.card .go{right:18px;top:18px;width:40px;height:40px}.card p{font-size:15px}
 .proc h2{margin-bottom:0}.pstep{padding:22px;min-height:0}.pstep b{font-size:40px}.pstep h3{margin:14px 0 6px}
 .bp-wrap{gap:28px}.bp{padding:8px}
 .panel{padding:20px}.eclass div{height:32px;font-size:14px}
 .certs{grid-template-columns:1fr 1fr;gap:10px}.cert{padding:16px;gap:10px}.cert h3{font-size:15px}.cert span{font-size:13px}.cert:last-child{grid-column:1/-1}
 .cta{padding:36px 22px;border-radius:22px}.cta h2{font-size:30px}.cta p{margin:14px 0 24px}
 .ftr{padding-top:64px}.ftr .big{font-size:38px;margin-bottom:40px}.fcols{gap:28px}.fbot{flex-direction:column;gap:6px;margin-top:40px}
 .sblock{padding-bottom:56px}.sblock .row{gap:24px;margin-top:20px}.gal{gap:8px}
 .chips{gap:6px}.chip{font-size:13px;padding:7px 12px}
 .refs{grid-template-columns:1fr}.ref{min-height:0;padding:22px 20px;gap:10px}
 .tl{gap:24px;margin-top:36px}.docs{gap:10px}
 form.cf{padding:22px}.map{height:280px}
 dl.cinfo>div{flex-direction:column;gap:4px;padding:14px 0}
 .faq summary{font-size:18px}
 .mnav{padding:96px var(--pad) calc(24px + env(safe-area-inset-bottom))}.mnav a.big{font-size:34px;padding:6px 0}
}
@media (max-width:370px){.hero-meta{grid-template-columns:1fr 1fr 1fr}.hdr .lang a{min-width:36px;padding:0 8px}.mbar .btn{font-size:14px}}
@media (max-width:1100px){.hero-fade{display:none}}
@media (max-width:720px){
 .card{display:grid;grid-template-columns:48px 1fr;column-gap:16px;align-items:start;padding:20px 64px 20px 20px}
 .card .num{grid-column:1/-1;margin-bottom:6px}.card .ico{width:48px;height:48px;margin:2px 0 0}.card h3{font-size:19px}.card p{margin-top:6px}
 .fcols{grid-template-columns:1fr 1fr;gap:28px 20px}.fcols>div:first-child,.fcols>div:last-child{grid-column:1/-1}
 .fcols a{min-height:40px}
}
.bp-wrap .lead.mt{margin-bottom:28px}
.mnav .mcta .btn{display:flex;padding:14px 20px;min-height:52px}.mnav .mcta .btn.white{color:var(--ink)}.mnav .mcta .btn.white:hover{color:#fff}
.mnav .mfoot a.mmail{color:#9a9ca1}
dl.cinfo dd a{border:0!important;justify-content:flex-start;flex-wrap:nowrap}
@media (max-width:720px){
 .hero-art{max-width:360px}.hvac{max-height:300px}
 .eclass{gap:5px;margin-top:16px}.eclass div{height:26px;font-size:13px}
 .thermal{aspect-ratio:16/10}
 .bp{max-height:300px}
 .sound{max-height:90px}
}
/* v5 iOS hardening */
@media (max-width:1100px){.hero .wrap{display:flex;flex-direction:column}.hero-copy{order:1}.hero-art{order:2}}
@media (max-width:720px){[data-split] .ln,[data-split] .ln-mask,[data-split] div{opacity:1!important}}