:root{
  --ink:#2B2D31; --grey:#54555A; --slate:#5F727F; --mist:#E4EAEC; --paper:#F5F7F7; --white:#FFFFFF;
  --green:#40B036; --green-dark:#2F8A27; --green-light:#7ACC52; --green-pale:#EAF6E8;
  --line:#D5DDE0; --substrate:#AEB9BF;
  --radius:4px; --max:1200px; --header:78px;
}
*{box-sizing:border-box}
[hidden]{display:none!important}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;font-family:Barlow,system-ui,sans-serif;font-size:18px;line-height:1.6;color:var(--grey);background:var(--white)}
img{max-width:100%;height:auto;display:block}
[id]{scroll-margin-top:calc(var(--header) + 12px)}
h1,h2,h3{font-family:"Barlow Semi Condensed",Barlow,sans-serif;color:var(--ink);line-height:1.08;margin:0;font-weight:600}
h1{font-size:clamp(2.5rem,5.2vw,4.3rem);letter-spacing:-.01em}
h2{font-size:clamp(2rem,3.4vw,2.9rem)}
h3{font-size:1.45rem}
p{margin:0 0 1em}
a{color:var(--green-dark)}
:focus-visible{outline:3px solid var(--green);outline-offset:3px}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
.skip{position:absolute;left:-9999px;top:0;background:var(--ink);color:#fff;padding:10px 16px;z-index:100}
.skip:focus{left:12px;top:12px}
.btn{display:inline-flex;align-items:center;gap:.5em;font:600 1rem Barlow,sans-serif;padding:.9em 1.4em;border-radius:var(--radius);text-decoration:none;border:2px solid transparent;cursor:pointer;transition:background .15s,color .15s}
.btn-primary{background:var(--green-dark);color:#fff}
.btn-primary:hover{background:#246A1E}
.btn-ghost{border-color:var(--ink);color:var(--ink);background:transparent}
.btn-ghost:hover{background:var(--ink);color:#fff}
.btn-light{border-color:#fff;color:#fff;background:transparent}
.btn-light:hover{background:#fff;color:var(--ink)}
.link{font-weight:600}

/* header */
.topbar{background:var(--ink);color:#C9D2D7;font-size:.85rem}
.topbar .wrap{display:flex;justify-content:flex-end;gap:24px;padding-top:6px;padding-bottom:6px}
.topbar a{color:#fff;text-decoration:none}
.topbar a:hover{color:var(--green-light)}
header.site{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.97);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
header.site .wrap{display:flex;align-items:center;gap:32px;height:var(--header)}
header.site .logo img{height:44px;width:auto}
nav.main{display:flex;gap:28px;margin-left:auto}
nav.main a{color:var(--ink);text-decoration:none;font-weight:500;padding:4px 0;border-bottom:2px solid transparent}
nav.main a:hover{color:var(--green-dark)}
nav.main a[aria-current=page]{border-bottom-color:var(--green)}
.menu-btn{display:none;margin-left:auto;background:none;border:1px solid var(--line);border-radius:var(--radius);padding:8px 14px;font:600 .95rem Barlow;color:var(--ink);cursor:pointer}

/* home hero */
.hero{padding:72px 0 0;background:linear-gradient(var(--white) 0 70%,var(--paper) 70%)}
.hero-grid{display:grid;grid-template-columns:1fr 1.05fr;gap:56px;align-items:center}
.hero h1{max-width:15ch}
.hero p.lede{font-size:1.2rem;max-width:36ch;margin:24px 0 32px}
.ctas{display:flex;flex-wrap:wrap;gap:12px}
.photo{position:relative;border-radius:var(--radius);overflow:hidden;margin:0}
.hero .photo{aspect-ratio:5/3.4}
.photo img{width:100%;height:100%;object-fit:cover}
.photo figcaption{position:absolute;left:0;bottom:0;background:var(--ink);color:#fff;font-size:.85rem;padding:8px 14px}
.hero-facts{display:flex;gap:40px;flex-wrap:wrap;margin-top:40px;padding-top:22px;border-top:1px solid var(--line);font-size:.98rem}
.hero-facts b{display:block;color:var(--ink);font:600 1.3rem "Barlow Semi Condensed"}

/* inner page hero */
.page-hero{background:var(--paper);padding:64px 0 56px;border-bottom:1px solid var(--line)}
.page-hero p{font-size:1.2rem;max-width:56ch;margin:18px 0 0}
.crumbs{font-size:.9rem;margin-bottom:14px}
.crumbs a{color:var(--slate);text-decoration:none}
.crumbs a:hover{color:var(--green-dark)}

/* sections */
section.block{padding:96px 0}
section.tint{background:var(--paper)}
section.dark{background:var(--ink);color:#C9D2D7}
section.dark h2,section.dark h3{color:#fff}
section.dark .section-head p{color:#C9D2D7}
.section-head{max-width:680px;margin-bottom:48px}
.section-head p{font-size:1.1rem;margin-top:16px}
.head-row{display:flex;justify-content:space-between;align-items:end;gap:32px;flex-wrap:wrap;margin-bottom:48px}
.head-row .section-head{margin-bottom:0}

/* web path */
.stations{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(8,1fr)}
.stations li{position:relative;padding-top:44px;padding-right:14px}
.stations li::before{content:"";position:absolute;top:13px;left:0;right:0;height:6px;background:var(--substrate)}
.stations li.coated::before{background:var(--green)}
.stations li::after{content:"";position:absolute;top:4px;left:0;width:24px;height:24px;border-radius:50%;background:var(--white);border:3px solid var(--slate)}
.stations li.coated::after{border-color:var(--green)}
.stations li.start::after{background:var(--green);border-color:var(--green)}
.stations h3{font-size:1.15rem;margin-bottom:4px}
.stations p{font-size:.92rem;line-height:1.45;margin:0}
@media (prefers-reduced-motion:no-preference){
  .stations li.coated::before{transform-origin:left;transform:scaleX(0)}
  .stations.run li.coated::before{animation:coat .5s ease-out both}
  .stations li:nth-child(5)::before{animation-delay:.45s}
  .stations li:nth-child(6)::before{animation-delay:.9s}
  .stations li:nth-child(7)::before{animation-delay:1.35s}
  .stations li:nth-child(8)::before{animation-delay:1.8s}
}
@keyframes coat{from{transform:scaleX(0)}to{transform:scaleX(1)}}
@keyframes coatv{from{transform:scaleY(0)}to{transform:scaleY(1)}}
.legend{display:flex;gap:24px;margin-top:32px;font-size:.9rem}
.legend span::before{content:"";display:inline-block;width:28px;height:6px;margin-right:8px;vertical-align:middle;background:var(--substrate)}
.legend span.g::before{background:var(--green)}

/* equipment tables */
.spec-switch{display:inline-flex;background:var(--white);border:1px solid var(--line);border-radius:999px;padding:5px;margin-bottom:28px}
.spec-switch button{all:unset;cursor:pointer;padding:10px 22px;border-radius:999px;color:var(--slate);font-weight:600;font-size:.98rem}
.spec-switch button[aria-selected=true]{background:var(--ink);color:#fff}
.spec-switch button:focus-visible{outline:3px solid var(--green);outline-offset:2px}
.table-wrap{overflow-x:auto}
table.specs{width:100%;border-collapse:collapse;font-size:1rem;background:var(--white)}
table.specs caption{text-align:left;font:600 1.5rem "Barlow Semi Condensed";color:var(--ink);padding-bottom:14px}
table.specs th,table.specs td{text-align:left;padding:15px 16px;border-top:1px solid var(--line);vertical-align:top}
table.specs tr:last-child th,table.specs tr:last-child td{border-bottom:1px solid var(--line)}
table.specs th{font-weight:500;color:var(--slate);width:20%}
table.specs td.v{font-weight:600;color:var(--ink);width:28%}
table.specs thead th{font:600 .85rem Barlow;color:var(--slate);background:var(--paper);border-top:0}
.two-tables{display:grid;grid-template-columns:1fr;gap:72px}

/* scales */
.scales{display:grid;grid-template-columns:repeat(3,1fr);border-top:2px solid var(--ink)}
.scale{padding:28px 28px 8px 0;border-right:1px solid var(--line)}
.scale + .scale{padding-left:28px}
.scale:last-child{border-right:0}
.scale .step{font:600 .95rem "Barlow Semi Condensed";color:var(--green-dark)}
.scale h3{margin:6px 0 12px;font-size:1.8rem}
.scale .key{display:block;font-weight:600;color:var(--ink);margin-top:14px}

/* markets */
.market-list{display:grid;grid-template-columns:repeat(3,1fr);gap:0 40px}
.market-list details{border-top:1px solid #45484E;padding:16px 0}
.market-list summary{cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;font:600 1.3rem "Barlow Semi Condensed";color:#fff}
.market-list summary::-webkit-details-marker{display:none}
.market-list summary::after{content:"+";font-size:1.5rem;color:var(--green-light);transition:transform .2s}
.market-list details[open] summary::after{transform:rotate(45deg)}
.market-list ul{margin:12px 0 4px;padding-left:18px;font-size:.95rem;line-height:1.7}
.market-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:0 40px}
.market-grid article{border-top:2px solid var(--ink);padding:20px 0 28px}
.market-grid h3{margin-bottom:10px}
.market-grid ul{margin:0;padding-left:18px;font-size:.98rem;line-height:1.75}

/* two-col with photo */
.split{display:grid;grid-template-columns:.9fr 1.1fr;gap:64px;align-items:start}
.split .photo{position:sticky;top:calc(var(--header) + 32px)}
.split .photo img{aspect-ratio:4/5}
.pillars{margin:32px 0 0;padding:0;list-style:none}
.pillars li{padding:22px 0;border-top:1px solid var(--line)}
.pillars h3{margin-bottom:6px}
.pillars p{margin:0}

/* process */
ol.process{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(5,1fr);gap:24px;counter-reset:s}
ol.process li{counter-increment:s;border-top:4px solid var(--green);padding-top:18px}
ol.process li::before{content:counter(s);font:700 2.4rem "Barlow Semi Condensed";color:var(--ink);display:block;line-height:1;margin-bottom:10px}
ol.process h3{font-size:1.2rem;margin-bottom:6px}
ol.process p{font-size:.95rem;margin:0}

/* hydrogen */
.h2-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:40px}
.h2-cards article{background:var(--white);border-left:4px solid var(--green);padding:26px 26px 20px}
.h2-cards h3{margin-bottom:8px}

/* video */
.video{position:relative;aspect-ratio:16/9;background:var(--ink);border-radius:var(--radius);overflow:hidden}
.video iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.video button{all:unset;cursor:pointer;position:absolute;inset:0;display:block}
.video button img{width:100%;height:100%;object-fit:cover;filter:brightness(.72)}
.video .play{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);display:flex;align-items:center;gap:14px;color:#fff;font:600 1.3rem "Barlow Semi Condensed"}
.video .play::before{content:"";width:76px;height:76px;border-radius:50%;background:var(--green) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M8 5v14l11-7z' fill='white'/%3E%3C/svg%3E") center/34px no-repeat;flex:none}
.video button:hover .play::before{background-color:var(--green-dark)}
.video button:focus-visible{outline:3px solid var(--green);outline-offset:-3px}
.video-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:56px;align-items:center}

/* team */
.ceo{display:grid;grid-template-columns:.7fr 1.3fr;gap:64px;align-items:center}
.ceo .photo img{aspect-ratio:4/5}
.ceo blockquote{margin:0;font-size:1.2rem;line-height:1.65;color:var(--ink)}
.ceo blockquote p{margin:0 0 1em}
.ceo .sig{margin-top:18px}
.ceo .sig b{display:block;color:var(--ink);font:600 1.3rem "Barlow Semi Condensed"}
.people{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.person{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column}
.person .pic{aspect-ratio:4/4.2;background:var(--mist);display:grid;place-items:center;overflow:hidden}
.person .pic img{width:100%;height:100%;object-fit:cover;object-position:50% 20%}
.person .pic span{font:600 3rem "Barlow Semi Condensed";color:var(--slate)}
.person .info{padding:20px 22px 22px}
.person h3{font-size:1.35rem}
.person p{margin:4px 0 10px;font-size:.98rem}
.person a{font-size:.95rem;display:block;word-break:break-word}
.contacts{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.contacts div{border-top:2px solid var(--ink);padding-top:14px}
.contacts dt{font-weight:600;color:var(--ink)}
.contacts dd{margin:4px 0 0}
.banner{width:100%;height:clamp(260px,38vw,520px);object-fit:cover}
.friends{display:flex;align-items:center;gap:28px;flex-wrap:wrap}
.friends img{height:40px;width:auto}

/* news */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}
.post-card{display:flex;flex-direction:column;text-decoration:none;color:inherit}
.post-card .thumb{aspect-ratio:16/10;background:var(--mist);border-radius:var(--radius);overflow:hidden;margin-bottom:16px}
.post-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s}
.post-card:hover .thumb img{transform:scale(1.03)}
.post-card time{font-size:.9rem;color:var(--slate)}
.post-card h3{font-size:1.3rem;margin:4px 0 8px}
.post-card:hover h3{color:var(--green-dark)}
.post-card p{font-size:.98rem;margin:0}
.year{font:600 1.6rem "Barlow Semi Condensed";color:var(--ink);border-top:2px solid var(--ink);padding-top:14px;margin:56px 0 28px}
.year:first-child{margin-top:0}
.article{max-width:760px;margin:0 auto}
.article .meta{color:var(--slate);margin:14px 0 0}
.article .lead-img{margin:36px 0;border-radius:var(--radius);overflow:hidden}
.article .body img{border-radius:var(--radius);margin:24px 0}
.article .body{font-size:1.1rem}
.article .body h2,.article .body h3{margin:1.4em 0 .5em}
.article .back{display:inline-block;margin-top:40px;font-weight:600}

/* contact + wizard */
.contact-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:64px}
.contact-info address{font-style:normal;margin:24px 0}
.contact-info dl{display:grid;grid-template-columns:auto 1fr;gap:8px 16px;font-size:.98rem}
.contact-info dt{color:var(--slate)}
.contact-info dd{margin:0}
.wizard{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:36px}
.progress{display:flex;gap:8px;margin:0 0 28px;list-style:none;padding:0}
.progress li{flex:1;font-size:.88rem;font-weight:600;color:var(--slate)}
.progress li::before{content:"";display:block;height:5px;background:var(--line);margin-bottom:8px}
.progress li.done::before,.progress li.current::before{background:var(--green)}
.progress li.current{color:var(--ink)}
.step{display:none}
.step.active{display:block}
.step h3{font-size:1.6rem;margin-bottom:20px}
.fields{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:flex;flex-direction:column;gap:6px}
.full{grid-column:1/-1}
label{font-weight:600;color:var(--ink);font-size:.95rem}
.opt{font-weight:400;color:var(--slate)}
input,select,textarea{font:inherit;font-size:1rem;padding:12px 14px;border:1px solid #B9C4C9;border-radius:var(--radius);background:#fff;color:var(--ink);width:100%}
input:focus,select:focus,textarea:focus{outline:2px solid var(--green);outline-offset:0;border-color:var(--green)}
textarea{min-height:130px;resize:vertical}
.options{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.options label{display:flex;gap:12px;align-items:flex-start;border:1px solid #B9C4C9;border-radius:var(--radius);padding:14px 16px;cursor:pointer;font-weight:600;background:#fff}
.options label small{display:block;font-weight:400;color:var(--slate);font-size:.9rem}
.options input{width:18px;height:18px;margin-top:3px;accent-color:var(--green-dark);flex:none;padding:0}
.options label:has(input:checked){border-color:var(--green);background:var(--green-pale)}
.err{color:#B3261E;font-size:.88rem;min-height:1.1em}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.nav-row{display:flex;justify-content:space-between;align-items:center;margin-top:28px;gap:12px;flex-wrap:wrap}
.form-error{color:#B3261E;margin:16px 0 0}
.sent{display:none}
.sent h3{font-size:1.7rem;margin-bottom:10px}
.cta-band{background:var(--green-dark);color:#E7F4E5;padding:64px 0}
.cta-band .wrap{display:flex;justify-content:space-between;align-items:center;gap:32px;flex-wrap:wrap}
.cta-band h2{color:#fff;font-size:clamp(1.8rem,3vw,2.5rem)}
.cta-band p{margin:8px 0 0;font-size:1.1rem}

footer{background:var(--ink);color:#AEB9BF;padding:56px 0 32px;font-size:.95rem}
footer .cols{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}
footer .flogo{height:40px;width:auto;margin-bottom:16px}
footer h4{color:#fff;margin:0 0 12px;font:600 1.05rem "Barlow Semi Condensed"}
footer a{color:#DDE3E6;text-decoration:none;display:block;padding:3px 0}
footer a:hover{color:var(--green-light)}
footer .legal{border-top:1px solid #45484E;margin-top:40px;padding-top:20px;font-size:.85rem}

@media (max-width:980px){
  nav.main,.topbar{display:none}
  .menu-btn{display:block}
  nav.main.open{display:flex;flex-direction:column;position:absolute;top:var(--header);left:0;right:0;background:#fff;padding:16px 24px 24px;border-bottom:1px solid var(--line);gap:12px}
  header.site .cta-head{display:none}
  .hero-grid,.split,.contact-grid,.ceo,.video-grid,.two-tables{grid-template-columns:1fr;gap:40px}
  .split .photo{position:static}
  .split .photo img,.ceo .photo img{aspect-ratio:4/3}
  .stations{grid-template-columns:1fr;padding-left:8px}
  .stations li{padding:0 0 26px 44px}
  .stations li::before{top:0;bottom:0;left:9px;right:auto;width:6px;height:auto}
  .stations li::after{top:0;left:0}
  @media (prefers-reduced-motion:no-preference){.stations li.coated::before{transform-origin:top;transform:scaleY(0)}.stations.run li.coated::before{animation-name:coatv}}
  .scales{grid-template-columns:1fr}
  .scale,.scale + .scale{border-right:0;border-bottom:1px solid var(--line);padding:28px 0}
  .market-list,.market-grid,.h2-cards{grid-template-columns:1fr}
  ol.process{grid-template-columns:1fr 1fr}
  .people,.news-grid{grid-template-columns:1fr 1fr}
  .contacts{grid-template-columns:1fr 1fr}
  footer .cols{grid-template-columns:1fr 1fr}
}
@media (max-width:600px){
  body{font-size:17px}
  .wrap{padding:0 16px}
  .fields,.options{grid-template-columns:1fr}
  .wizard{padding:22px}
  ol.process,.people,.news-grid,.contacts{grid-template-columns:1fr}
  section.block{padding:64px 0}
  footer .cols{grid-template-columns:1fr}
  table.specs th,table.specs td{padding:12px 10px}
  table.specs,table.specs tbody,table.specs tr,table.specs th,table.specs td{display:block;width:auto}
  table.specs tr{border-top:1px solid var(--line);padding:12px 0}
  table.specs th,table.specs td{border:0!important;padding:2px 0}
  table.specs td.n{font-size:.92rem}
  table.specs th,table.specs td.v{width:auto}
  .hero-facts{gap:24px}
}