:root{
  --paper:#E9EEF1;
  --paper-2:#DEE6EA;
  --ink:#111A20;
  --ink-2:#4C5F6A;
  --rule:#C3CFD6;
  --supply:#12849F;
  --return:#B4651F;
  --graphite:#0E161B;
  --supply-lit:#4CCBE6;
  --return-lit:#EBA451;
  --paper-lit:#DDE6EB;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:"IBM Plex Sans",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:16.5px;line-height:1.62;-webkit-font-smoothing:antialiased;
}
.wrap{max-width:1180px;margin:0 auto;padding:0 32px}
@media(max-width:640px){.wrap{padding:0 20px}}
h1,h2,h3{font-family:Archivo,"Arial Narrow",sans-serif;font-weight:800;text-transform:uppercase;letter-spacing:-.018em;line-height:1.02;margin:0}
p{margin:0 0 1em}
a{color:inherit}
:focus-visible{outline:2px solid var(--supply);outline-offset:3px}

.tag{font-family:"IBM Plex Mono",ui-monospace,monospace;font-size:11.5px;font-weight:500;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-2)}

/* ---------- header ---------- */
.masthead{position:sticky;top:0;z-index:50;background:rgba(233,238,241,.93);backdrop-filter:blur(8px);border-bottom:1px solid var(--rule)}
.masthead > .wrap{display:flex;align-items:center;justify-content:space-between;height:66px;gap:24px}
.brand{display:flex;align-items:center;gap:11px;text-decoration:none;white-space:nowrap}
.brand img{height:34px;width:auto;display:block;flex:none}
.brand .name{font-family:Archivo,sans-serif;font-weight:800;text-transform:uppercase;font-size:17.5px;letter-spacing:.015em;line-height:1;color:var(--ink)}
.brand .co{display:block;font-family:"IBM Plex Mono",monospace;font-size:9.5px;letter-spacing:.26em;color:var(--ink-2);margin-top:4px}
.navlinks{display:flex;gap:26px}
.navlinks a{font-family:"IBM Plex Mono",monospace;font-size:12px;letter-spacing:.1em;text-transform:uppercase;text-decoration:none;color:var(--ink-2);padding:4px 0;border-bottom:1px solid transparent;transition:color .18s,border-color .18s}
.navlinks a:hover{color:var(--ink);border-bottom-color:var(--supply)}
.navlinks a.on{color:var(--ink);border-bottom-color:var(--supply)}
.navbtn{font-family:"IBM Plex Mono",monospace;font-size:12px;letter-spacing:.1em;text-transform:uppercase;text-decoration:none;background:var(--ink);color:var(--paper);padding:10px 16px;white-space:nowrap;transition:background .18s}
.navbtn:hover{background:var(--supply)}
@media(max-width:1000px){.navlinks{display:none}}
@media(max-width:720px){.masthead .navbtn{display:none}}
@media(max-width:520px){.brand .name{font-size:15px}.brand img{height:29px}}

/* mobile menu */
.menutoggle{display:none;background:none;border:1px solid var(--rule);padding:8px 12px;font-family:"IBM Plex Mono",monospace;font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink);cursor:pointer}
@media(max-width:1000px){.menutoggle{display:block}}
.mobilenav{display:none;border-bottom:1px solid var(--rule);background:var(--paper)}
.mobilenav.open{display:block}
.mobilenav .wrap{display:block;height:auto;padding-top:6px;padding-bottom:10px}
.mobilenav a{display:block;padding:14px 0;border-bottom:1px solid var(--rule);font-family:"IBM Plex Mono",monospace;font-size:12.5px;letter-spacing:.1em;text-transform:uppercase;text-decoration:none;color:var(--ink)}
.mobilenav a:last-child{border-bottom:none}

/* ---------- buttons ---------- */
.actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.btn{font-family:"IBM Plex Mono",monospace;font-size:12.5px;letter-spacing:.11em;text-transform:uppercase;text-decoration:none;padding:15px 26px;border:1px solid var(--ink);transition:background .18s,color .18s,border-color .18s;display:inline-block;cursor:pointer}
.btn-solid{background:var(--ink);color:var(--paper)}
.btn-solid:hover{background:var(--supply);border-color:var(--supply)}
.btn-ghost{background:transparent;color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:var(--paper)}
@media(max-width:620px){.btn{padding:13px 20px;font-size:11.5px}}

/* ---------- hero ---------- */
.hero{padding:88px 0 12px}
.hero-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:56px;align-items:center}
@media(max-width:980px){.hero{padding-top:56px}.hero-grid{grid-template-columns:1fr;gap:40px}}
.hero h1{font-size:clamp(38px,6.2vw,74px)}
.hero h1 em{font-style:normal;display:block;color:var(--supply)}
.hero .lede{font-size:clamp(17px,1.6vw,19.5px);color:var(--ink-2);max-width:34em;margin-top:26px}
.hero .tag{display:block;margin-bottom:20px}

/* ---------- page header (inner pages) ---------- */
.pagehead{padding:72px 0 44px;border-bottom:1px solid var(--rule)}
.pagehead .tag{display:block;margin-bottom:16px}
.pagehead h1{font-size:clamp(34px,5vw,60px);max-width:18ch}
.pagehead h1 em{font-style:normal;display:block;color:var(--supply)}
.pagehead p{color:var(--ink-2);max-width:60ch;margin-top:22px;font-size:17.5px}
@media(max-width:640px){.pagehead{padding:48px 0 34px}}

/* ---------- schematic ---------- */
.schematic{width:100%;height:auto;display:block}
.sch-box{fill:none;stroke:var(--ink);stroke-width:1.4}
.sch-fill{fill:var(--paper-2)}
.sch-lbl{font-family:"IBM Plex Mono",monospace;font-size:10.5px;letter-spacing:.11em;fill:var(--ink);text-transform:uppercase}
.sch-lbl-s{font-family:"IBM Plex Mono",monospace;font-size:9.5px;letter-spacing:.09em;fill:var(--ink-2)}
.pipe{fill:none;stroke-width:3.4;stroke-linecap:round}
.pipe-s{stroke:var(--supply)}
.pipe-r{stroke:var(--return)}
.flow{stroke-dasharray:9 13;animation:flow 1.5s linear infinite}
.flow-rev{stroke-dasharray:9 13;animation:flowrev 1.5s linear infinite}
@keyframes flow{to{stroke-dashoffset:-44}}
@keyframes flowrev{to{stroke-dashoffset:44}}
@media (prefers-reduced-motion:reduce){.flow,.flow-rev{animation:none}}
.rack{fill:var(--ink);opacity:.8}
.thin{fill:none;stroke:var(--ink-2);stroke-width:1.1;stroke-dasharray:3 3}

/* ---------- credential strip ---------- */
.creds{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:38px;border-top:1px solid var(--rule);padding-top:20px}
.cred{padding-right:14px;border-right:1px solid var(--rule)}
.cred:last-child{border-right:none;padding-right:0}
.cred b{display:block;font-family:Archivo,sans-serif;font-weight:800;font-size:26px;line-height:1;letter-spacing:-.02em;color:var(--ink)}
.cred .tag{display:block;margin-top:7px;font-size:9.5px;letter-spacing:.09em}
@media(max-width:980px){.cred b{font-size:29px}}
@media(max-width:620px){
  .creds{grid-template-columns:repeat(2,1fr);gap:20px 0}
  .cred{border-right:none;padding-right:16px}
  .cred:nth-child(2n+1){border-right:1px solid var(--rule)}
  .cred b{font-size:23px}
}

/* ---------- delta-T rail ---------- */
.deltat{padding:58px 0 76px}
.deltat-rail{height:4px;background:linear-gradient(90deg,var(--supply) 0%,#6E8A6E 48%,var(--return) 100%)}
.deltat-legend{display:flex;justify-content:space-between;margin-top:10px}
.deltat-legend span{font-family:"IBM Plex Mono",monospace;font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-2)}
.deltat-legend .mid{color:var(--ink);font-weight:500}
@media(max-width:700px){.deltat-legend .mid{display:none}}

/* ---------- spec rows ---------- */
.section{padding:56px 0 82px}
.spec{display:grid;grid-template-columns:250px 1fr;gap:44px;padding:46px 0;border-top:1px solid var(--rule)}
@media(max-width:860px){.spec{grid-template-columns:1fr;gap:22px;padding:36px 0}}
.spec.first{border-top:none;padding-top:0}
.spec-head .tag{display:block;margin-bottom:14px}
.spec-head h2{font-size:clamp(24px,2.6vw,31px)}
.spec-body p{color:var(--ink-2);max-width:60ch}
.spec-body p.callout{color:var(--ink);border-left:3px solid var(--return);padding-left:18px;font-size:17.5px}
.speclist{list-style:none;margin:22px 0 0;padding:0;columns:2;column-gap:44px}
.speclist.tight{margin-top:0}
@media(max-width:780px){.speclist{columns:1}}
.speclist li{break-inside:avoid;padding:9px 0 9px 22px;position:relative;font-size:15.5px;line-height:1.5;border-bottom:1px solid var(--rule)}
.speclist li::before{content:"";position:absolute;left:0;top:17px;width:9px;height:1.5px;background:var(--supply)}

/* ---------- dark band ---------- */
.band{background:var(--graphite);color:var(--paper-lit);padding:82px 0}
.band h2{color:#fff;font-size:clamp(26px,3vw,38px)}
.band h3{color:#fff}
.band .tag{color:#8FA3AE}
.band p{color:#A9BAC4}
.band .speclist li{border-bottom-color:#22323B}
.band .speclist li::before{background:var(--supply-lit)}
.band .spec{border-top:1px solid #22323B}
.band .spec.first{border-top:none;padding-top:0}
.band .spec-body p.callout{color:#DDE6EB;border-left-color:var(--return-lit)}
.band .cardgrid a{border-color:#22323B}

/* ---------- capability cards ---------- */
.cardgrid{display:grid;grid-template-columns:repeat(2,1fr);gap:0;border-top:1px solid var(--rule)}
@media(max-width:760px){.cardgrid{grid-template-columns:1fr}}
.card{display:block;text-decoration:none;padding:34px 34px 38px;border-right:1px solid var(--rule);border-bottom:1px solid var(--rule);transition:background .18s}
.card:nth-child(2n){border-right:none}
@media(max-width:760px){.card{border-right:none}}
.card:hover{background:var(--paper-2)}
.card .tag{display:block;margin-bottom:12px;color:var(--supply)}
.card h3{font-size:21px;margin-bottom:10px}
.card p{color:var(--ink-2);font-size:15.5px;margin:0 0 14px;line-height:1.55}
.card .go{font-family:"IBM Plex Mono",monospace;font-size:11.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink)}
.card .go::after{content:" →"}

/* ---------- process ---------- */
.process{display:grid;grid-template-columns:repeat(5,1fr);border-top:1px solid var(--rule)}
@media(max-width:900px){.process{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.process{grid-template-columns:1fr}}
.step{padding:28px 24px 32px;border-right:1px solid var(--rule);border-bottom:1px solid var(--rule)}
.step:last-child{border-right:none}
@media(max-width:900px){.step{border-right:1px solid var(--rule)}}
.step .num{font-family:"IBM Plex Mono",monospace;font-size:11px;letter-spacing:.14em;color:var(--supply);display:block;margin-bottom:12px}
.step h3{font-size:16px;margin-bottom:8px}
.step p{font-size:14.5px;color:var(--ink-2);margin:0;line-height:1.5}

/* ---------- markets ---------- */
.markets{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.markets span{font-family:"IBM Plex Mono",monospace;font-size:12px;letter-spacing:.08em;text-transform:uppercase;border:1px solid var(--rule);padding:9px 15px;color:var(--ink-2)}

/* ---------- gallery ---------- */
.gallery{padding:0 0 84px}
.gallery-head{margin-bottom:30px}
.gallery-head .tag{display:block;margin-bottom:12px}
.gallery-head h2{font-size:clamp(24px,2.6vw,31px)}
.gallery-head p{color:var(--ink-2);max-width:58ch;margin-top:14px}
.shots{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;border-top:1px solid var(--rule);padding-top:30px}
@media(max-width:900px){.shots{grid-template-columns:1fr 1fr}}
@media(max-width:620px){.shots{grid-template-columns:1fr}}
.shot{margin:0}
.shot .frame{position:relative;aspect-ratio:4/3;overflow:hidden;background:var(--paper-2);border:1px solid var(--rule)}
.shot .frame img{width:100%;height:100%;object-fit:cover;display:block}
.shot .ph{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;text-align:center;padding:20px;background:repeating-linear-gradient(45deg,var(--paper-2) 0 12px,#D6DFE4 12px 24px)}
.shot .ph span{font-family:"IBM Plex Mono",monospace;font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-2)}
.shot .ph span.f{color:var(--ink);font-weight:500}
.shot figcaption{margin-top:12px}
.shot figcaption b{display:block;font-family:Archivo,sans-serif;font-weight:600;text-transform:uppercase;font-size:13px;letter-spacing:.02em;margin-bottom:5px}
.shot figcaption p{font-size:14px;color:var(--ink-2);margin:0;line-height:1.5}

/* ---------- form ---------- */
.formgrid{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-top:8px}
@media(max-width:760px){.formgrid{grid-template-columns:1fr}}
.field{display:flex;flex-direction:column}
.field.full{grid-column:1/-1}
.field label{font-family:"IBM Plex Mono",monospace;font-size:11px;letter-spacing:.13em;text-transform:uppercase;color:var(--ink-2);margin-bottom:8px}
.field input,.field select,.field textarea{
  font-family:"IBM Plex Sans",sans-serif;font-size:16px;color:var(--ink);
  background:#fff;border:1px solid var(--rule);padding:13px 14px;width:100%;border-radius:0;
}
.field textarea{min-height:150px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--supply);box-shadow:0 0 0 1px var(--supply)}
.formnote{font-size:14px;color:var(--ink-2);margin-top:18px;max-width:60ch}

/* ---------- contact rows ---------- */
.contact{display:flex;flex-wrap:wrap;gap:36px;margin-top:36px}
.contact div .tag{display:block;margin-bottom:6px;border-bottom:none;padding-bottom:0}
.contact div a,.contact div span.v{font-size:17px;text-decoration:none;border-bottom:1px solid var(--supply);padding-bottom:2px}

/* ---------- closer ---------- */
.closer{border-top:1px solid var(--rule);padding:80px 0 90px}
.closer h2{font-size:clamp(28px,4vw,50px);max-width:16ch}
.closer p{color:var(--ink-2);max-width:46ch;margin-top:20px;font-size:17.5px}

/* ---------- footer ---------- */
footer{border-top:1px solid var(--rule);padding:52px 0 56px}
footer .wrap{display:flex;align-items:flex-start;justify-content:space-between;flex-wrap:wrap;gap:34px}
footer .foot-lockup{height:92px;width:auto;display:block;opacity:.92}
footer .footnav{display:flex;gap:44px;flex-wrap:wrap}
footer .footnav div{display:flex;flex-direction:column;gap:9px}
footer .footnav a{font-family:"IBM Plex Mono",monospace;font-size:11.5px;letter-spacing:.09em;text-transform:uppercase;color:var(--ink-2);text-decoration:none}
footer .footnav a:hover{color:var(--ink)}
footer .footnav .hd{font-family:"IBM Plex Mono",monospace;font-size:11.5px;letter-spacing:.09em;text-transform:uppercase;color:var(--ink);font-weight:500}
.footbar{border-top:1px solid var(--rule);margin-top:44px;padding-top:20px}
.footbar p{margin:0;font-family:"IBM Plex Mono",monospace;font-size:11px;letter-spacing:.09em;text-transform:uppercase;color:var(--ink-2)}