/* Oxygen Engenharia — layout corporativo: faixa de contatos, cabeçalho branco com logo, banner verde-escuro com esquema VRF, faixas alternadas, rodapé escuro.
   Cores tiradas do logotipo: verde-floresta, verde-folha, azul-água e amarelo. */
:root{
  --paper:#F4F5F4; --surface:#FFFFFF; --sunk:#E9ECEA; --line:#D8DDDA; --ink:#23282C; --muted:#5D666B;
  --green:#4A8A1C; --leaf:#6DB33F; --blue:#4A5258; --yellow:#A9DB6E; --yellow-ink:#1C2611;
  --accent:#8CC63F; --accent-ink:#1C2611; --accent-text:#4A8A1C; --link:#3F7D17;
  --deep:#2B3036; --deep-2:#3B4249; --deep-ink:#F1F4F2; --deep-muted:#BAC2BD;
  --ok:#3C7A22; --ok-soft:#E3F2D6; --bad:#B4362F; --bad-soft:#F8E1DF;
  --f-display:"Poppins","Segoe UI",Arial,sans-serif; --f-body:"Nunito Sans","Segoe UI",Arial,sans-serif;
  --r:10px; --wrap:1200px;
}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){
  --paper:#1C1F22; --surface:#24282C; --sunk:#2C3135; --line:#3A4045; --ink:#ECEFED; --muted:#A9B1AD;
  --green:#9FD465; --leaf:#8CC63F; --blue:#C4CBC7; --accent-text:#A9DB6E; --link:#A9DB6E;
  --deep:#16191C; --deep-2:#22262A; --deep-ink:#ECEFED; --deep-muted:#A9B1AD;
  --ok:#8CC63F; --ok-soft:#24331A; --bad:#EE8078; --bad-soft:#3C1E1D; color-scheme:dark}}
:root[data-theme="dark"]{
  --paper:#1C1F22; --surface:#24282C; --sunk:#2C3135; --line:#3A4045; --ink:#ECEFED; --muted:#A9B1AD;
  --green:#9FD465; --leaf:#8CC63F; --blue:#C4CBC7; --accent-text:#A9DB6E; --link:#A9DB6E;
  --deep:#16191C; --deep-2:#22262A; --deep-ink:#ECEFED; --deep-muted:#A9B1AD;
  --ok:#8CC63F; --ok-soft:#24331A; --bad:#EE8078; --bad-soft:#3C1E1D; color-scheme:dark}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font:17px/1.6 var(--f-body)}
img{max-width:100%;display:block}
a{color:var(--link)}
h1,h2,h3{font-family:var(--f-display);line-height:1.15;margin:0;text-wrap:balance}
h1{font-size:clamp(32px,4.6vw,54px);font-weight:700;letter-spacing:-.02em}
h2{font-size:clamp(25px,3vw,36px);font-weight:700;letter-spacing:-.01em}
h3{font-size:19px;font-weight:600}
p{margin:0}
.container{max-width:var(--wrap);margin:0 auto;padding-inline:20px}
.eyebrow{font:600 13px/1.2 var(--f-display);letter-spacing:.12em;text-transform:uppercase;color:var(--accent-text);margin-bottom:12px}
.eyebrow.light{color:var(--yellow)}
.eyebrow a{color:inherit}
.lead{font-size:19px;color:var(--muted);max-width:60ch}
.muted{color:var(--muted)}
.fine{font-size:14px;color:var(--muted)}
.skip{position:absolute;left:-999px}.skip:focus{left:16px;top:16px;z-index:99;background:var(--surface);padding:8px 12px}
:focus-visible{outline:3px solid var(--yellow);outline-offset:3px}
.btn{display:inline-flex;align-items:center;gap:8px;font:600 15px var(--f-display);background:var(--accent);color:var(--accent-ink);border:2px solid var(--accent);padding:12px 22px;border-radius:999px;text-decoration:none;cursor:pointer;transition:filter .15s,transform .15s}
.btn:hover{filter:brightness(1.1);transform:translateY(-1px)}
.btn.ghost{background:transparent;color:var(--accent-text);border-color:var(--accent)}
.btn.yellow{background:var(--yellow);border-color:var(--yellow);color:var(--yellow-ink)}
.btn.outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.7)}
.btn.small{padding:8px 18px;font-size:14px}
/* Topo */
.topbar{background:var(--deep);color:var(--deep-muted);font-size:14px}
.tb-in{display:flex;justify-content:space-between;gap:8px 20px;flex-wrap:wrap;padding-block:7px}
.tb-in span{display:flex;align-items:center;gap:6px}
.tb-in .ico{width:16px;height:16px;color:var(--yellow)}
.tb-c{gap:18px!important}
.topbar a{color:var(--deep-ink);text-decoration:none}
@media (max-width:640px){.tb-in>span:first-child{display:none}.tb-c{width:100%;justify-content:space-between}}
.site-h{position:sticky;top:env(safe-area-inset-top,0px);z-index:10;background:var(--surface);border-bottom:1px solid var(--line);box-shadow:0 2px 14px rgba(20,24,28,.06)}
.bar{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:78px}
.logo img{height:54px;width:auto}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]) .logo img{background:#fff;border-radius:8px;padding:4px 8px}}
:root[data-theme="dark"] .logo img{background:#fff;border-radius:8px;padding:4px 8px}
.nav{display:flex;align-items:center;gap:26px}
.nav a{color:var(--ink);text-decoration:none;font:500 15px var(--f-display)}
.nav a:hover{color:var(--accent-text)}
.nav a[aria-current="page"]{color:var(--accent-text);box-shadow:inset 0 -3px 0 var(--accent)}
.nav a.btn{color:var(--accent-ink);box-shadow:none}
.menu-btn{display:none;font:600 15px var(--f-display);background:none;border:1px solid var(--line);border-radius:999px;padding:8px 16px;color:var(--ink)}
@media (max-width:900px){
  .menu-btn{display:block}
  .nav{display:none;position:absolute;left:0;right:0;top:100%;flex-direction:column;align-items:stretch;gap:0;background:var(--surface);border-bottom:1px solid var(--line);padding:8px 20px 18px}
  .nav.open{display:flex}
  .nav a{padding:13px 0;border-bottom:1px solid var(--line)}
  .nav a[aria-current="page"]{box-shadow:none}
  .nav a.btn{margin-top:14px;justify-content:center;border-bottom:none}
}
/* Banner */
.hero{position:relative;color:#fff;background:radial-gradient(1100px 480px at 85% 10%,rgba(140,198,63,.22),transparent 60%),linear-gradient(135deg,var(--deep) 0%,var(--deep-2) 70%,#454D54 120%);overflow:hidden}
.hero.has-img{background:linear-gradient(90deg,rgba(30,34,38,.92) 0%,rgba(30,34,38,.7) 45%,rgba(30,34,38,.25) 100%),var(--hero-img) center/cover no-repeat}
.hero-in{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:40px;align-items:center;padding-block:80px 56px}
.hero.has-img .hero-in{grid-template-columns:minmax(0,1fr);max-width:var(--wrap);padding-block:110px 90px}
.hero.has-img .hero-txt{max-width:640px}
.hero-txt{display:flex;flex-direction:column;gap:20px}
.hero .lead{color:#DDE2DF}
.cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:6px}
.hero-art{margin:0}
.hero-art svg{width:100%;height:auto}
.hero-art .room rect{fill:rgba(255,255,255,.06);stroke:rgba(255,255,255,.22)}
.hero-art .line{fill:none;stroke-width:3;stroke-linecap:round;stroke-linejoin:round}
.hero-art .liq{stroke:#E6EAE7}
.hero-art .gas{stroke:var(--yellow)}
.hero-art .refnet circle{fill:#fff}
.hero-art .cond rect{fill:#F2F5F3;stroke:#BFD3C4}
.hero-art .cond circle{fill:#DCE6DF;stroke:#93A99A}
.hero-art .cond path{stroke:#6E8676;stroke-width:2;fill:none}
.hero-art .evap rect{fill:#fff}
.hero-art .air path{fill:none;stroke:#C9EBA3;stroke-width:2;stroke-linecap:round;opacity:.8}
.hero-art .lbl text{font:600 12px var(--f-body);fill:#D3D9D5}
@media (prefers-reduced-motion:no-preference){.hero-art .liq,.hero-art .gas{stroke-dasharray:8 7;animation:flow 1.2s linear infinite}.hero-art .gas{animation-direction:reverse}@keyframes flow{to{stroke-dashoffset:-15}}}
.pillars{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;background:rgba(255,255,255,.15);border:1px solid rgba(255,255,255,.15);border-radius:var(--r);margin-bottom:48px;overflow:hidden}
.pillars div{background:rgba(20,23,26,.5);padding:18px 20px;display:grid;grid-template-columns:36px minmax(0,1fr);column-gap:12px;align-items:start}
.pillars .ico{width:30px;height:30px;color:var(--yellow);grid-row:span 2}
.pillars b{font-family:var(--f-display);font-weight:600}
.pillars span{color:#CDD3CF;font-size:15px}
@media (max-width:900px){.hero-in{grid-template-columns:minmax(0,1fr);padding-block:52px 40px}.hero-art{max-width:460px}.pillars{grid-template-columns:minmax(0,1fr)}}
/* Seções */
.section{padding-block:80px}
.section.alt{background:var(--surface);border-block:1px solid var(--line)}
.sec-h{margin-bottom:38px;max-width:760px}
.sec-h .lead{margin-top:14px}
.sec-h.row{max-width:none;display:flex;justify-content:space-between;align-items:flex-end;gap:16px;flex-wrap:wrap}
.link{font:600 15px var(--f-display);text-decoration:none;color:var(--accent-text)}
.ico{width:36px;height:36px;color:var(--leaf)}
.segs{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.seg{padding:26px 22px;border-radius:var(--r);background:var(--surface);border:1px solid var(--line);display:flex;flex-direction:column;gap:10px;position:relative;overflow:hidden}
.seg::after{content:"";position:absolute;inset:auto 0 0 0;height:4px;background:linear-gradient(90deg,var(--accent),#C9EBA3 60%,var(--line))}
.seg .ico{width:42px;height:42px;color:var(--leaf)}
.seg p{color:var(--muted);font-size:16px}
@media (max-width:1000px){.segs{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:560px){.segs{grid-template-columns:minmax(0,1fr)}}
.split{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:56px;align-items:start}
.split .lead{margin-top:16px}
@media (max-width:900px){.split{grid-template-columns:minmax(0,1fr);gap:28px}}
.benefits{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px 28px}
.benefits li{display:grid;grid-template-columns:40px minmax(0,1fr);gap:12px}
.benefits .ico{width:32px;height:32px;color:var(--blue)}
.benefits b{font-family:var(--f-display);font-weight:600;display:block;margin-bottom:2px}
.benefits span{color:var(--muted);font-size:16px}
@media (max-width:560px){.benefits{grid-template-columns:minmax(0,1fr)}}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px}
.card{display:flex;flex-direction:column;gap:12px;padding:26px;border:1px solid var(--line);border-radius:var(--r);background:var(--surface);text-decoration:none;color:var(--ink);transition:border-color .15s,transform .15s,box-shadow .15s}
.card:hover{border-color:var(--accent);transform:translateY(-3px);box-shadow:0 10px 24px rgba(20,24,28,.08)}
.card p{color:var(--muted);font-size:16px;flex:1}
.card .more{font:600 14px var(--f-display);color:var(--accent-text)}
.nums{background:linear-gradient(90deg,var(--deep),var(--deep-2));color:#fff}
.nums-in{display:flex;flex-wrap:wrap;justify-content:space-around;gap:24px;padding-block:44px}
.nums-in div{display:flex;flex-direction:column;align-items:center;text-align:center}
.nums strong{font:700 46px var(--f-display);color:var(--yellow);font-variant-numeric:tabular-nums}
.nums span{color:#DDE2DF}
.steps{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;counter-reset:s}
.steps li{display:grid;grid-template-columns:48px minmax(0,1fr);column-gap:14px;padding:16px 0;border-top:1px solid var(--line);counter-increment:s}
.steps li::before{content:counter(s);grid-row:span 2;width:36px;height:36px;border-radius:50%;background:var(--accent);color:var(--accent-ink);display:grid;place-items:center;font:600 15px var(--f-display)}
.steps b{font-family:var(--f-display);font-weight:600;font-size:18px}
.steps span{color:var(--muted)}
.obras{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
@media (max-width:900px){.obras{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:560px){.obras{grid-template-columns:minmax(0,1fr)}}
.obra{display:flex;flex-direction:column;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;background:var(--surface);text-decoration:none;color:var(--ink);transition:box-shadow .15s}
.obra:hover{box-shadow:0 10px 24px rgba(20,24,28,.1)}
.obra .ph{aspect-ratio:4/3;background:var(--sunk);display:grid;place-items:center;max-width:100%}
.obra .ph img{width:100%;height:100%;object-fit:cover}
.obra .ph .ico{width:52px;height:52px;opacity:.5}
.obra .ob{padding:16px 18px;display:flex;flex-direction:column;gap:6px}
.obra .muted{font-size:15px}
.obra[hidden]{display:none}
.tag{font:600 11px var(--f-display);letter-spacing:.08em;text-transform:uppercase;color:var(--accent-text)}
.area{background:linear-gradient(180deg,var(--paper),var(--sunk))}
.areas{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.areas li{display:flex;align-items:center;gap:12px;padding:14px 18px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);font-weight:600}
.areas .ico{width:22px;height:22px;color:var(--leaf);flex:none}
.brands{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:14px}
.brands li{padding:18px 20px;border:1px solid var(--line);border-radius:var(--r);background:var(--surface);display:flex;flex-direction:column}
.brands b{font:700 20px var(--f-display);color:var(--blue)}
.brands span{color:var(--muted);font-size:15px}
.qa{display:flex;flex-direction:column;border-top:1px solid var(--line)}
.qa details{border-bottom:1px solid var(--line);padding:16px 0}
.qa summary{cursor:pointer;font:600 17px var(--f-display);list-style:none;display:flex;justify-content:space-between;gap:16px}
.qa summary::-webkit-details-marker{display:none}
.qa summary::after{content:"+";color:var(--accent-text);font-size:22px;line-height:1}
.qa details[open] summary::after{content:"–"}
.qa p{color:var(--muted);margin-top:10px}
.cta-band{background:linear-gradient(120deg,var(--deep),var(--deep-2));color:var(--deep-ink)}
.cta-in{display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap;padding-block:56px}
.cta-in h2{max-width:24ch}
.cta-in p{color:var(--deep-muted);margin-top:8px}
.page-h{padding-block:60px 44px;background:linear-gradient(135deg,var(--deep),var(--deep-2));color:#fff}
.page-h .eyebrow{color:var(--yellow)}
.page-h .lead{margin-top:16px;color:#DDE2DF}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:26px}
.chips a,.chips button{font:500 14px var(--f-display);padding:7px 16px;border:1px solid rgba(255,255,255,.4);border-radius:999px;background:transparent;color:#fff;text-decoration:none;cursor:pointer}
.chips a:hover,.chips button:hover{border-color:var(--yellow)}
.chips button.on{background:var(--yellow);border-color:var(--yellow);color:var(--yellow-ink)}
.serv .ico{width:48px;height:48px;margin-bottom:16px;color:var(--leaf)}
.serv h2{margin-bottom:14px}
.serv p+p{margin-top:14px}
.checks{list-style:none;margin:0;padding:0;display:grid;border-top:1px solid var(--line)}
.checks li{padding:13px 0 13px 32px;border-bottom:1px solid var(--line);position:relative}
.checks li::before{content:"";position:absolute;left:4px;top:20px;width:13px;height:7px;border-left:2.5px solid var(--leaf);border-bottom:2.5px solid var(--leaf);transform:rotate(-45deg)}
section[id]{scroll-margin-top:96px}
.prose{display:flex;flex-direction:column;gap:18px;font-size:18px;max-width:65ch}
.about-side{display:flex;flex-direction:column;gap:18px}
.cover{border-radius:var(--r);width:100%}
.facts{border:1px solid var(--line);border-radius:var(--r);background:var(--surface);padding:26px;display:flex;flex-direction:column;gap:18px}
.facts h2{font-size:21px}
.dlist{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:14px}
.dlist li{display:grid;grid-template-columns:28px minmax(0,1fr);gap:12px;align-items:start}
.dlist .ico{width:26px;height:26px;color:var(--leaf)}
.dlist span{color:var(--muted);font-size:16px}
.dlist b{color:var(--ink)}
.fact{display:flex;flex-direction:column;border-top:1px solid var(--line);padding-top:14px}
.fact strong{font:700 34px var(--f-display);color:var(--accent-text)}
.meta{display:grid;grid-template-columns:auto minmax(0,1fr);gap:8px 16px;margin:0}
.meta dt{color:var(--muted);font-size:15px}
.meta dd{margin:0;font-weight:600;overflow-wrap:anywhere}
.empty{display:flex;flex-direction:column;align-items:center;text-align:center;gap:14px;padding:52px 20px;border:1px dashed var(--line);border-radius:var(--r);background:var(--surface)}
.empty p{color:var(--muted);max-width:56ch}
.form{display:flex;flex-direction:column;gap:16px}
.form label{display:flex;flex-direction:column;gap:6px;font-weight:700;font-size:15px}
.form input,.form select,.form textarea{font:16px var(--f-body);color:var(--ink);background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:12px 13px;width:100%}
.form input:focus,.form select:focus,.form textarea:focus{border-color:var(--accent);outline:none;box-shadow:0 0 0 3px rgba(140,198,63,.3)}
.form textarea{resize:vertical}
.form .btn{align-self:flex-start}
.row2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
@media (max-width:560px){.row2{grid-template-columns:minmax(0,1fr)}}
.ferr{color:var(--bad);font-weight:600;font-size:14px}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.alert{padding:12px 16px;border-radius:8px;font-weight:600}
.alert.ok{background:var(--ok-soft);color:var(--ok)}
.alert.err{background:var(--bad-soft);color:var(--bad)}
.site-f{background:#1E2226;color:#AEB6B1;padding-top:60px}
.fgrid{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr) minmax(0,1fr);gap:36px}
@media (max-width:760px){.fgrid{grid-template-columns:minmax(0,1fr)}}
.fcol{display:flex;flex-direction:column;gap:12px}
.flogo img{height:62px;width:auto}
.fcol h2{font-size:14px;letter-spacing:.12em;text-transform:uppercase;color:var(--yellow)}
.fcol ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}
.site-f a{color:#EEF1EF;text-decoration:none}
.site-f a:hover{text-decoration:underline}
.site-f .fine{color:#8E9792}
.fbase{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-block:24px;margin-top:44px;border-top:1px solid rgba(190,198,194,.2);font-size:14px}
.fbase span{display:flex;gap:16px}
.wa{position:fixed;right:20px;bottom:calc(20px + env(safe-area-inset-bottom,0px));width:58px;height:58px;border-radius:50%;background:#25D366;color:#fff;display:grid;place-items:center;box-shadow:0 6px 20px rgba(0,0,0,.25);z-index:9}
/* Fabricantes */
.fabs{background:var(--surface);border-block:1px solid var(--line)}
.pillars3{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;margin-bottom:36px}
.p3{padding:22px;border-radius:var(--r);background:linear-gradient(160deg,var(--deep),var(--deep-2));color:#E6EAE7;display:flex;flex-direction:column;gap:10px}
.p3 .ico{width:34px;height:34px;color:var(--yellow)}
.p3 h3{color:#fff}
.p3 p{font-size:15px;color:#CDD3CF}
@media (max-width:1000px){.pillars3{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:560px){.pillars3{grid-template-columns:minmax(0,1fr)}}
.brand-grid{display:flex;flex-direction:column;gap:14px}
.brand{border:1px solid var(--line);border-radius:var(--r);background:var(--paper);display:flex;flex-direction:column;overflow:hidden}
.bh{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:18px 20px;background:#FFFFFF;border-bottom:1px solid var(--line);min-height:84px}
.bh img{max-height:46px;max-width:170px;width:auto;object-fit:contain}
.bname{font:700 24px var(--f-display);color:#2F353A;letter-spacing:-.01em}
.bline{font:600 12px var(--f-display);letter-spacing:.08em;text-transform:uppercase;color:#3F6F1C;background:#EAF5DD;padding:4px 10px;border-radius:999px;white-space:nowrap}
.brand dl{margin:0;padding:16px 20px 20px;display:flex;flex-direction:column;gap:12px}
.brand dt{display:flex;align-items:center;gap:8px;font:600 13px var(--f-display);letter-spacing:.06em;text-transform:uppercase;color:var(--accent-text)}
.brand dt .ico{width:18px;height:18px;color:var(--leaf)}
.brand dd{margin:2px 0 0;color:var(--muted);font-size:15px}
.fabs-note{margin-top:20px}
@media (min-width:1000px){
  .brand{display:grid;grid-template-columns:200px minmax(0,1fr)}
  .bh{flex-direction:column;justify-content:center;align-items:flex-start;border-bottom:none;border-right:1px solid var(--line);gap:10px}
  .brand dl{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;padding:18px 20px}
  .brand dl>div{min-width:0}
}
/* Banner com fotos em transição */
.hero.has-slides{background:#1E2226;min-height:min(720px,92vh)}
.hero.has-slides .hero-in{grid-template-columns:minmax(0,1fr);padding-block:96px 64px}
.hero.has-slides .hero-txt{max-width:620px;position:relative;z-index:2}
.hero.has-slides .pillars,.hero.has-slides .dots{position:relative;z-index:2}
.slides{position:absolute;inset:0;z-index:0;overflow:hidden}
.slide{position:absolute;inset:0;opacity:0;transition:opacity 1.4s ease}
.slide.on{opacity:1}
.slide img{position:absolute;display:block}
.slide .full{inset:0;width:100%;height:100%;object-fit:cover}
.slide .blur{inset:-40px;width:calc(100% + 80px);height:calc(100% + 80px);object-fit:cover;filter:blur(28px) saturate(.9) brightness(.55)}
.slide .fg{top:6%;bottom:6%;right:4%;width:52%;height:88%;object-fit:contain;object-position:right center;filter:drop-shadow(0 18px 40px rgba(0,0,0,.45));-webkit-mask-image:linear-gradient(90deg,transparent 0,#000 22%);mask-image:linear-gradient(90deg,transparent 0,#000 22%)}
.shade{position:absolute;inset:0;background:linear-gradient(90deg,rgba(28,32,36,.94) 0%,rgba(28,32,36,.82) 38%,rgba(28,32,36,.35) 70%,rgba(28,32,36,.15) 100%),linear-gradient(0deg,rgba(28,32,36,.85) 0%,rgba(28,32,36,0) 35%)}
@media (prefers-reduced-motion:no-preference){.slide.on .full,.slide.on .fg{animation:kb 9s ease-out both}@keyframes kb{from{transform:scale(1.06)}to{transform:scale(1)}}}
.dots{display:flex;gap:8px;justify-content:center;padding-bottom:22px;margin-top:-28px}
.dot{width:10px;height:10px;border-radius:50%;border:none;padding:0;background:rgba(255,255,255,.35);cursor:pointer;transition:background .2s,width .2s}
.dot.on{background:var(--accent);width:26px;border-radius:5px}
@media (max-width:900px){
  .hero.has-slides .hero-in{padding-block:64px 40px}
  .slide .fg{right:0;left:0;width:100%;top:auto;bottom:0;height:55%;opacity:.55}
  .shade{background:linear-gradient(180deg,rgba(28,32,36,.9) 0%,rgba(28,32,36,.75) 55%,rgba(28,32,36,.9) 100%)}
}
/* Fotos em "Para quem trabalhamos" */
.seg.has-ph{padding:0}
.seg-ph{position:relative;aspect-ratio:4/3;max-width:100%;overflow:hidden;background:var(--sunk)}
.seg-ph img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.seg.has-ph:hover .seg-ph img{transform:scale(1.04)}
.seg-ic{position:absolute;left:16px;bottom:-20px;width:46px;height:46px;border-radius:12px;background:var(--surface);display:grid;place-items:center;box-shadow:0 6px 16px rgba(20,24,28,.15)}
.seg-ic .ico{width:26px!important;height:26px!important}
.seg.has-ph .seg-tx{padding:30px 22px 26px;display:flex;flex-direction:column;gap:10px}
.seg-tx{display:flex;flex-direction:column;gap:10px}
.seg-ph{overflow:visible}
.seg-ph img{border-radius:var(--r) var(--r) 0 0}
/* Fabricantes: só logotipos */
.logos{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:14px}
.logos li{background:#FFFFFF;border:1px solid var(--line);border-radius:var(--r);height:110px;display:grid;place-items:center;padding:18px 22px;transition:box-shadow .2s,transform .2s}
.logos li:hover{box-shadow:0 10px 24px rgba(20,24,28,.08);transform:translateY(-2px)}
.logos img{max-height:56px;max-width:100%;width:auto;object-fit:contain}
.logos .bname{font:700 22px var(--f-display);color:#2F353A}

/* Por que VRF e VRV + fabricantes (unificado) */
.vrf-why{background:var(--surface);border-block:1px solid var(--line)}
.why-cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.why{padding:24px;border:1px solid var(--line);border-radius:var(--r);background:var(--paper);display:flex;flex-direction:column;gap:10px;transition:border-color .2s,transform .2s}
.why:hover{border-color:var(--accent);transform:translateY(-2px)}
.why .ico{width:34px;height:34px;color:var(--leaf)}
.why p{color:var(--muted);font-size:16px}
@media (max-width:900px){.why-cards{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:560px){.why-cards{grid-template-columns:minmax(0,1fr)}}
.logos-h{font:600 15px var(--f-display);color:var(--ink);margin:44px 0 16px}
/* foto nos cards de soluções */
.card.has-img{padding-top:0;overflow:hidden}
.card-img{display:block;margin:0 -26px 4px;aspect-ratio:4/3;overflow:hidden;background:var(--line)}
.card-img img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .4s}
.card.has-img:hover .card-img img{transform:scale(1.04)}
.serv-img{width:100%;max-width:520px;height:auto;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r);margin-bottom:20px;display:block}
/* logos padronizados 600x300 */
.logos li{padding:6px 12px}
.logos img{width:100%;max-width:200px;height:auto;max-height:96px;object-fit:contain}
/* página Soluções: nome | foto | lista */
.serv3{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.15fr) minmax(0,1fr);gap:40px;align-items:center}
.serv3 .serv-fig{margin:0}
.serv3 .serv-img{max-width:none;margin:0 auto}
.serv3 .checks{margin:0}
@media (max-width:980px){.serv3{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}.serv3 .serv-fig{grid-column:1/-1;grid-row:1}}
@media (max-width:640px){.serv3{grid-template-columns:minmax(0,1fr);gap:24px}.serv3 .serv-fig{grid-row:auto}}
/* fotos menores na página Soluções */
.serv3{grid-template-columns:minmax(0,1fr) minmax(0,.75fr) minmax(0,1fr)}
.serv3 .serv-img{max-width:300px}
@media (max-width:980px){.serv3{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}}
@media (max-width:640px){.serv3{grid-template-columns:minmax(0,1fr)}.serv3 .serv-img{max-width:100%}}
/* Perguntas frequentes em cinza */
.section.faq{background:#E3E7E5;border-block:1px solid #D2D8D5}
.faq .qa details{border-bottom-color:#C6CDC9}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .section.faq{background:var(--sunk);border-color:var(--line)}:root:not([data-theme="light"]) .faq .qa details{border-bottom-color:var(--line)}}
:root[data-theme="dark"] .section.faq{background:var(--sunk);border-color:var(--line)}
:root[data-theme="dark"] .faq .qa details{border-bottom-color:var(--line)}
/* carrossel de unidades evaporadoras */
.evap .sec-h{margin-bottom:24px}
.evap-nav{display:flex;gap:8px}
.evap-btn{width:42px;height:42px;border-radius:50%;border:1px solid var(--line);background:var(--surface);color:var(--ink);font-size:24px;line-height:1;cursor:pointer;display:grid;place-items:center;transition:border-color .15s,background .15s}
.evap-btn:hover{border-color:var(--accent);background:var(--accent);color:var(--accent-ink)}
.evap-track{display:flex;gap:16px;overflow-x:auto;scroll-snap-type:x mandatory;scroll-behavior:smooth;scrollbar-width:none;padding-bottom:4px}
.evap-track::-webkit-scrollbar{display:none}
.evap-card{flex:0 0 calc((100% - 48px)/4);scroll-snap-align:start;margin:0;background:#FFFFFF;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;display:flex;flex-direction:column}
.evap-card img{width:100%;height:auto;aspect-ratio:800/560;object-fit:contain;display:block;padding:10px}
.evap-card figcaption{padding:14px 18px 18px;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:4px}
.evap-card b{font:600 16px var(--f-display);color:#23282C}
.evap-card span{font-size:14px;color:#5D666B}
@media (max-width:980px){.evap-card{flex-basis:calc((100% - 32px)/3)}}
@media (max-width:700px){.evap-card{flex-basis:calc((100% - 16px)/2)}}
@media (max-width:440px){.evap-card{flex-basis:80%}}
/* página Equipamentos */
.eq-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:16px}
/* equipamentos: card sem foto */
.evap-ph{display:grid;place-items:center;aspect-ratio:800/560;background:#F1F3F2;color:#7C8A82}
.evap-ph .ico{width:56px;height:56px}