:root{--green:#005b45;--ink:#172d28;--muted:#465c55;--line:#cbd7d2;--soft:#eff4f1;--gold:#a37732}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:30px}body{margin:0;background:#fff;color:var(--ink);font-family:Arial,Helvetica,sans-serif;font-size:17px;line-height:1.65}a{color:inherit;text-decoration:none}button{font:inherit}a:focus-visible,button:focus-visible{outline:3px solid #b58b35;outline-offset:5px}.wrap{max-width:1360px;margin:auto;padding:0 56px}header{border-bottom:1px solid var(--line)}.header{min-height:106px;display:flex;justify-content:space-between;align-items:center;gap:35px}.brand{font-size:37px;font-weight:800;letter-spacing:-1.8px;line-height:1;color:var(--green)}.brand span{display:block;font-size:10px;letter-spacing:2px;margin-top:9px;line-height:1.2}.header nav{display:flex;gap:26px;align-items:center;font-size:14px;line-height:1.4}.header nav a{padding:10px 0}.header nav a:hover,.text-link:hover,.link-stack 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th{background:var(--green);color:white;font-weight:500}tbody th{font-weight:500}.process{list-style:none;display:grid;grid-template-columns:repeat(3,1fr);gap:24px;padding:0;margin:0}.process li{border-top:2px solid var(--green);padding:20px 0}.process span{font-size:14px;color:var(--green)}.process h3{font-size:24px;margin:18px 0 0}.economics{display:grid;grid-template-columns:repeat(3,1fr);gap:35px}.economics article{border-top:1px solid var(--line);padding-top:25px}.economics h3{margin-top:25px}.economics p{font-size:17px}@media(min-width:1500px){.hero-photo{height:560px}}@media(max-width:1050px){.wrap{padding-left:30px;padding-right:30px}.header nav{gap:18px;font-size:13px}.hero{gap:30px}.hero-photo{height:450px}.hero h1{font-size:52px}.feature-grid{gap:45px}.split,.case-grid,.evidence-grid{gap:35px}.subhero-grid{gap:35px}.solution-grid h3{font-size:27px}.solution-grid article{padding-right:20px}.solution-grid 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h3{font-size:21px}h2{font-size:35px}.metric strong{font-size:42px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}@media print{.menu,.button,.skip{display:none}header,footer{break-inside:avoid}section{break-inside:auto}a{text-decoration:none}}

/* Evidence-led application edition */
.hero h1{font-size:clamp(40px,4.2vw,60px);letter-spacing:-2px}.eyebrow,.index,.photo-caption,.application-grid figcaption{font-size:14px}.caption{font-size:14px}.production-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;border-top:2px solid var(--green);padding-top:28px}.production-stats>div{display:flex;flex-direction:column;gap:12px}.production-stats strong{font-size:clamp(34px,3.8vw,54px);color:var(--green);line-height:1.15;letter-spacing:-1px}.production-stats small{font-size:22px}.production-stats span{max-width:280px}.case-heading{margin-top:65px}.case-pair,.case-triptych{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}.case-triptych{grid-template-columns:repeat(3,minmax(0,1fr))}.case-pair img,.case-triptych img{width:100%;height:380px;object-fit:contain;background:#e7ece9;display:block}.case-triptych img{height:340px}figcaption{font-size:16px;margin-top:14px;font-weight:600}.application-grid img{object-fit:contain;background:#eff3f1}.application-tags{display:flex;flex-wrap:wrap;gap:12px;margin:30px 0 45px}.application-tags span{border:1px solid #91aaa0;padding:10px 18px;color:var(--green);font-weight:600}.detail-photo{margin-top:15px}.detail-photo summary{cursor:pointer;color:var(--green);font-weight:600;padding:14px 0}.detail-photo img{max-width:100%;max-height:550px;object-fit:contain}.chart-legend{display:flex;flex-wrap:wrap;gap:25px;margin:30px 0}.chart-legend span{display:flex;align-items:center;gap:10px}.chart-legend i{width:20px;height:20px;display:inline-block}.initial{background:#84a59a}.humid{background:#005b45}.bar-group{margin:28px 0}.bar-group h3{font-size:21px}.bar-track{background:#dfe7e2;margin:10px 0;max-width:950px}.bar{padding:10px 16px;font-weight:700;min-width:140px;color:white}.bar.initial{color:#102d23}.full-line{width:100%;height:auto;display:block;margin:45px 0 0}.roi-note{border-left:3px solid var(--green);padding:10px 25px;margin-top:32px}.roi-note p:last-child{margin-bottom:0}@media(max-width:760px){.production-stats,.case-pair,.case-triptych{grid-template-columns:1fr}.production-stats{gap:25px}.case-pair img,.case-triptych img{height:330px}.hero h1{font-size:43px}.chart-legend{font-size:14px}.bar{font-size:15px}.foot-bottom{flex-wrap:wrap}}

.home-iron-photo{display:block;width:100%;height:440px;object-fit:contain;background:#e7ece9}#iron-production figure{margin:0}#iron-production .application-tags{margin:24px 0 30px}@media(max-width:760px){.home-iron-photo{height:360px}}

/* Unified typography, evidence tables and section rhythm */
body{font-size:18px;line-height:1.65}h3{font-weight:600}.header nav{font-size:15px}.header a[aria-current="page"]{color:var(--green);text-decoration:underline;text-underline-offset:7px}.section{padding-top:68px;padding-bottom:68px}.section-heading{margin-bottom:32px}.caption{font-size:14px;max-width:1050px}.table-scroll{margin:30px 0 20px;border:1px solid var(--line);background:#fff}.table-scroll:focus-visible{outline:3px solid var(--gold)}table{font-size:16px;line-height:1.5}table caption{padding:18px 20px;margin:0;font-size:18px;font-weight:600;color:var(--ink)}th,td{padding:17px 20px;vertical-align:top}thead th{font-weight:600}tbody tr:nth-child(even){background:#f3f6f4}tbody th{font-weight:600}tbody tr:last-child td,tbody tr:last-child th{border-bottom:0}.page-jumps{display:flex;flex-wrap:wrap;gap:12px;padding-top:20px;padding-bottom:20px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.page-jumps a{padding:9px 16px;background:var(--soft);font-size:16px;font-weight:600}.page-jumps a:hover{text-decoration:underline}.evidence-band{padding-top:48px;padding-bottom:48px;display:grid;grid-template-columns:1.4fr 1fr;gap:45px;align-items:center}.evidence-band h2{font-size:36px;margin-bottom:0}.evidence-band .eyebrow{margin-bottom:15px}.evidence-links{display:flex;flex-wrap:wrap;gap:14px}.contact-strip{display:flex;align-items:center;justify-content:space-between;gap:35px;padding-top:45px;padding-bottom:45px;border-top:1px solid var(--line)}.contact-strip h2{font-size:30px;max-width:740px;margin:0}.contact-strip .eyebrow{margin-bottom:14px}.contact-strip .button{white-space:nowrap}.foot-bottom{font-size:15px}.brand span{font-size:12px}.case-heading{margin-top:45px}@media(max-width:760px){body{font-size:17px}.section{padding-top:46px;padding-bottom:46px}.evidence-band{grid-template-columns:1fr;gap:18px}.evidence-band h2{font-size:31px}.contact-strip{flex-direction:column;align-items:flex-start}.table-scroll table{min-width:550px}.contact-strip h2{font-size:28px}.foot-bottom{font-size:14px}.production-stats strong{font-size:40px}.page-jumps{gap:8px}.page-jumps a{padding:8px 10px;font-size:14px}}

.photo-open{display:block;position:relative;border:0;padding:0;width:100%;background:transparent;cursor:zoom-in;color:var(--ink)}.photo-hint{position:absolute;bottom:12px;right:12px;background:#fff;padding:5px 12px;font-size:14px;font-weight:600;border:1px solid var(--line)}#photo-viewer{border:0;padding:24px;max-width:94vw;max-height:94vh;background:white;color:var(--ink)}#photo-viewer::backdrop{background:rgba(10,25,20,.85)}#photo-viewer img{display:block;max-width:85vw;max-height:73vh;object-fit:contain;margin:16px auto}#photo-viewer p{margin-bottom:0;font-size:16px}.viewer-close{display:block;margin-left:auto;padding:9px 16px;border:1px solid var(--green);background:white;color:var(--green);cursor:pointer}.table-scroll:focus-visible{outline:3px solid var(--gold)}

.article-page{max-width:1050px}.article-cover{display:block;width:100%;max-height:650px;object-fit:contain;background:var(--soft);margin:32px 0}.article-body{max-width:800px;font-size:19px;line-height:1.8;overflow-wrap:anywhere}.preview-label{background:#fff3d0;padding:12px;color:#664700}.insight-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:40px;margin-top:45px}.insight-grid img{width:100%;height:300px;object-fit:contain;background:var(--soft)}.insight-grid h2{font-size:30px}.insight-grid .eyebrow{margin-top:20px}@media(max-width:760px){.insight-grid{grid-template-columns:1fr}}
/* Production media gallery */
.media-intro{padding-bottom:35px}.media-intro h1{max-width:900px}.film-note{font-size:15px;border-left:3px solid var(--gold);padding-left:16px;margin:25px 0 35px}.film-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:38px 28px}.film-card{background:white;border:1px solid var(--line);scroll-margin-top:24px}.film-player{position:relative;background:#15251f;aspect-ratio:16/10}.film-player video{display:block;width:100%;height:100%;object-fit:contain}.film-play{position:absolute;inset:0;border:0;background:linear-gradient(transparent 45%,rgba(0,0,0,.7));color:white;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:15px;cursor:pointer;font-size:16px;font-weight:600}.film-play[hidden]{display:none}.play-symbol{display:grid;place-items:center;width:62px;height:62px;border-radius:50%;background:var(--green);border:2px solid white;font-size:26px;padding-left:4px}.film-copy{padding:25px}.film-copy .eyebrow{font-size:12px;margin-bottom:12px}.film-copy p:last-child{margin:0}.film-error a{text-decoration:underline}.gallery-case{display:grid;grid-template-columns:1fr 1.6fr;gap:50px;padding:42px 0;border-top:1px solid var(--line);align-items:center}.gallery-case h3{font-size:29px}.gallery-photos{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.gallery-photos.single{grid-template-columns:1fr}.gallery-photos img{display:block;width:100%;height:350px;object-fit:contain;background:#e7ece9}.gallery-photos figure{margin:0}.gallery-photos figcaption{font-size:15px}.gallery-index{display:flex;flex-wrap:wrap;gap:15px;margin-bottom:25px}.gallery-index a{border-bottom:1px solid var(--green);font-weight:600}.case-more{margin-left:22px}.header nav{gap:20px}@media(max-width:950px){.gallery-case{grid-template-columns:1fr;gap:22px}.header nav{gap:13px;font-size:14px}}@media(max-width:760px){.film-grid{grid-template-columns:1fr}.film-copy{padding:22px}.gallery-photos{grid-template-columns:1fr}.gallery-photos img{height:320px}.gallery-case{padding:30px 0}.film-player{aspect-ratio:4/3}.case-more{margin:20px 0 0}.gallery-case h3{font-size:26px}}
.case-evidence{padding:0 25px 28px}.case-evidence .case-pair{gap:16px;margin:0}.case-evidence .case-pair img{height:210px}.case-evidence figcaption{font-size:14px;line-height:1.5}.case-evidence .eyebrow{font-size:12px;border-top:1px solid var(--line);padding-top:22px}.case-routes{display:grid;grid-template-columns:1fr 1fr;gap:32px;margin:35px 0}.case-routes article,.case-summary{border-top:1px solid var(--line);padding-top:28px}.case-enquiry{margin-top:20px}.validation-path{list-style:none;padding:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px;margin:35px 0}.validation-path li{border-top:2px solid var(--green);padding-top:20px}.validation-path span{font-size:13px;font-weight:700;letter-spacing:1px;color:var(--green)}.validation-path h3{font-size:24px;margin-top:18px}.validation-path p{font-size:17px}@media(max-width:760px){.case-routes,.validation-path{grid-template-columns:1fr}.case-evidence .case-pair{grid-template-columns:1fr 1fr}.case-evidence .case-pair img{height:170px}.case-evidence{padding:0 22px 24px}.case-evidence figcaption{font-size:13px}.validation-path{gap:16px}}

.water-demo{display:grid;grid-template-columns:minmax(0,.75fr) minmax(0,1.25fr);gap:clamp(28px,5vw,80px);align-items:center}.water-demo .film-player{aspect-ratio:9/16;max-height:620px}.water-demo .film-card{max-width:350px;width:100%;justify-self:center}.water-results{margin:28px 0}.water-results>div{border-top:1px solid #b9cac4;padding:18px 0}.water-results dt{font-weight:700;color:#005c46}.water-results dd{margin:6px 0 0}.water-demo h2{font-size:clamp(32px,3.4vw,52px)}@media(max-width:760px){.water-demo{grid-template-columns:1fr}.water-demo .film-card{max-width:300px}.water-demo>div{grid-row:1}.water-demo .film-player{max-height:530px}}

.header-contact{background:var(--green);color:white;padding:12px 16px;font-size:14px;font-weight:700;white-space:nowrap}.header-contact:hover{background:#003e30;color:white}.header{gap:22px}.hero-actions{display:flex;flex-wrap:wrap;gap:12px}.contact-outline{background:transparent;color:var(--green);box-shadow:inset 0 0 0 1px var(--green)}.contact-outline:hover{background:#edf4f0;color:var(--green)}.hero-email{display:inline-block;margin-top:17px;font-size:16px;font-weight:600;color:var(--green);text-decoration:underline;text-underline-offset:4px;overflow-wrap:anywhere}
@media(max-width:1100px){.header{flex-wrap:wrap;gap:12px;padding-top:18px;padding-bottom:18px}.header>.brand{margin-right:auto}.header-contact{order:1}.menu{display:block;order:2;border:1px solid var(--line);background:white;padding:8px 12px;font-size:14px}.header nav{display:none;width:100%;order:3;flex-direction:column;align-items:flex-start}.header nav.open{display:flex}}@media(max-width:430px){.header>.brand{font-size:28px}.header>.brand span{font-size:8px;letter-spacing:1.3px}.header-contact{padding:10px 11px;font-size:13px}.header{gap:9px}.hero-actions .button{font-size:14px;padding:14px 16px}}