:root{
  --ink:#10263f;--navy:#123e74;--navy2:#0c2f59;--blue:#1c66ad;--green:#3aa65a;
  --text:#33465a;--muted:#6d7d8e;--line:#d9e2ea;--soft:#f4f7f9;--soft2:#eef3f6;--white:#fff;
  --max:1200px;--r:4px;--shadow:0 16px 40px rgba(16,38,63,.08);
}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:"Segoe UI",Arial,Helvetica,sans-serif;color:var(--text);background:#fff;line-height:1.58}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}.container{width:min(var(--max),calc(100% - 48px));margin:auto}.eyebrow,.kicker{font-size:12px;font-weight:750;letter-spacing:.14em;text-transform:uppercase;color:var(--blue)}
.topbar{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);backdrop-filter:blur(10px);border-bottom:1px solid rgba(217,226,234,.9)}.navwrap{height:76px;display:flex;align-items:center;justify-content:space-between;gap:28px}.wordmark{display:flex;align-items:center;min-width:220px}.mark{width:36px;height:36px;border:2px solid var(--navy);position:relative;transform:skew(-10deg)}.mark:after{content:"";position:absolute;right:-3px;bottom:-3px;width:13px;height:13px;background:var(--green);border-radius:50%}.wordmark img{display:block;width:168px;height:auto;max-height:52px;object-fit:contain;object-position:left center}.nav{display:flex;align-items:center;gap:22px;font-size:12px;font-weight:700;letter-spacing:.05em}.nav>a,.drop>button{padding:29px 0 26px;border:0;background:none;font:inherit;color:var(--ink);cursor:pointer}.nav>a:hover,.nav>a.active,.drop>button:hover{color:var(--blue)}.drop{position:relative}.mega{display:none;position:absolute;top:72px;left:-260px;width:720px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);padding:28px;grid-template-columns:repeat(3,1fr);gap:26px}.drop:hover .mega,.drop:focus-within .mega{display:grid}.mega h5{margin:0 0 10px;color:var(--navy);font-size:12px;text-transform:uppercase;letter-spacing:.08em}.mega a{display:block;padding:6px 0;font-size:13px;font-weight:500;letter-spacing:0;color:#4c5f72}.hamb{display:none}
.hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);background:linear-gradient(105deg,#fff 0 62%,#f1f5f7 62% 100%)}.hero:before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(18,62,116,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(18,62,116,.035) 1px,transparent 1px);background-size:42px 42px;mask-image:linear-gradient(to right,transparent 10%,#000 55%,#000 100%)}.hero-grid{position:relative;display:grid;grid-template-columns:1.05fr .95fr;min-height:620px;align-items:center;gap:54px}.hero h1{font-size:64px;line-height:1.02;letter-spacing:-.045em;color:var(--ink);margin:18px 0 24px;max-width:740px}.hero p{font-size:19px;max-width:660px;color:#5a6c7e}.hero-actions{display:flex;gap:12px;margin-top:32px}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 20px;border:1px solid var(--navy);font-weight:700;font-size:13px;letter-spacing:.02em}.btn.primary{background:var(--navy);color:#fff}.btn.secondary{background:#fff;color:var(--navy)}.btn:hover{transform:translateY(-1px)}.hero-visual{align-self:stretch;display:flex;align-items:center;justify-content:center;position:relative}.engineering-panel{width:100%;min-height:430px;border-left:1px solid var(--line);padding:52px 0 52px 52px;display:flex;flex-direction:column;justify-content:center}.visual-tag{font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:#6f8091;margin-bottom:18px}.process-strip{display:grid;grid-template-columns:repeat(5,1fr);align-items:center;gap:8px}.punit{height:116px;border:1px solid #aebfce;background:#fff;display:flex;align-items:flex-end;justify-content:center;padding:12px;position:relative;color:var(--navy);font-weight:700;font-size:11px;text-align:center}.punit:before{content:"";position:absolute;top:18px;width:32px;height:48px;border:2px solid #72869a;border-radius:16px 16px 5px 5px}.punit.furnace:before{width:60px;height:28px;border-radius:14px;top:28px}.punit.converter:before{width:28px;height:58px;top:12px}.punit.absorb:before{width:28px;height:55px;top:14px}.punit:not(:last-child):after{content:"→";position:absolute;right:-16px;top:46px;color:var(--blue);font-size:18px;z-index:3}.hero-stat{display:grid;grid-template-columns:1fr 1fr;margin-top:26px;border-top:1px solid var(--line)}.hero-stat div{padding:18px 0}.hero-stat div+div{padding-left:24px;border-left:1px solid var(--line)}.hero-stat strong{display:block;color:var(--navy);font-size:25px}.hero-stat span{font-size:12px;color:#6d7d8e}
.strip{background:var(--navy);color:#fff}.strip-grid{display:grid;grid-template-columns:repeat(3,1fr)}.strip-item{padding:22px 30px;border-right:1px solid rgba(255,255,255,.18)}.strip-item:first-child{padding-left:0}.strip-item:last-child{border-right:0}.strip-item .n{font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:#b9d1e8;margin-bottom:5px}.strip-item .v{font-size:15px;font-weight:650}
.section{padding:92px 0}.section.soft{background:var(--soft)}.section.dark{background:var(--navy2);color:#fff}.section-head{display:grid;grid-template-columns:1.15fr .85fr;gap:80px;align-items:end;margin-bottom:42px}.section-head h2,.article h2{margin:10px 0 0;color:var(--ink);font-size:40px;line-height:1.12;letter-spacing:-.025em}.section.dark .section-head h2{color:#fff}.section-head p{margin:0;color:var(--muted);font-size:16px}.section.dark .section-head p{color:#c8d7e4}.cards{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-left:1px solid var(--line)}.card{min-height:260px;padding:28px 26px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);background:#fff;position:relative}.card .num{font-size:11px;color:var(--blue);font-weight:750;letter-spacing:.1em}.card h3{color:var(--ink);font-size:20px;margin:44px 0 12px;line-height:1.25}.card p{font-size:14px;color:#687a8a;margin:0}.card .arrow{position:absolute;right:22px;bottom:20px;color:var(--blue);font-size:24px}.card:hover{background:#f9fbfc}.card:hover .arrow{transform:translateX(3px)}
.feature-grid{display:grid;grid-template-columns:.95fr 1.05fr;gap:50px;align-items:stretch}.feature-panel{background:#fff;border:1px solid var(--line);padding:38px}.feature-panel h3{font-size:30px;line-height:1.15;color:var(--ink);margin:0 0 18px}.feature-list{margin-top:26px;border-top:1px solid var(--line)}.feature-list>div{display:grid;grid-template-columns:48px 1fr;gap:14px;padding:15px 0;border-bottom:1px solid var(--line);font-size:14px}.feature-list b{color:var(--blue)}.visual-placeholder{min-height:420px;border:1px solid #b9c7d4;background:linear-gradient(135deg,#fff,#f4f7f9);position:relative;display:flex;align-items:center;justify-content:center;overflow:hidden}.visual-placeholder:before,.visual-placeholder:after{content:"";position:absolute;background:rgba(18,62,116,.06)}.visual-placeholder:before{width:120%;height:1px;transform:rotate(-15deg)}.visual-placeholder:after{width:1px;height:120%;transform:rotate(15deg)}.visual-placeholder .vp{z-index:2;text-align:center;max-width:360px;padding:30px}.vp strong{display:block;color:var(--navy);font-size:18px;margin-bottom:7px}.vp span{font-size:13px;color:#738393}.vp em{display:block;margin-top:16px;font-style:normal;font-size:10px;letter-spacing:.13em;text-transform:uppercase;color:var(--blue)}
.tech-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.tech-card{min-height:285px;background:#fff;border:1px solid var(--line);padding:28px;display:flex;flex-direction:column}.tech-card small{font-size:10px;letter-spacing:.13em;color:var(--blue);text-transform:uppercase}.tech-card h3{color:var(--ink);font-size:22px;margin:36px 0 10px}.tech-card p{font-size:14px;color:#687a8a}.tech-card a{margin-top:auto;font-weight:700;font-size:12px;color:var(--blue)}
.band{padding:52px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.band-grid{display:grid;grid-template-columns:1.2fr repeat(3,.6fr);align-items:center;gap:30px}.band h3{font-size:27px;color:var(--ink);margin:0}.band .metric strong{font-size:27px;color:var(--navy);display:block}.band .metric span{font-size:12px;color:var(--muted)}
.page-hero{padding:92px 0 58px;border-bottom:1px solid var(--line);background:linear-gradient(115deg,#fff 0 70%,#f1f5f7 70%)}.breadcrumb{font-size:10px;letter-spacing:.12em;color:#7a8a98;text-transform:uppercase;margin-bottom:26px}.page-hero h1{font-size:54px;line-height:1.05;color:var(--ink);margin:10px 0 18px;letter-spacing:-.035em}.page-hero p{max-width:760px;font-size:18px;color:#637587}.page-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:26px}.page-meta span{border:1px solid var(--line);background:#fff;padding:8px 11px;font-size:11px;color:#53677a}
.twocol{display:grid;grid-template-columns:280px 1fr;gap:58px}.side-index{position:sticky;top:105px;align-self:start;border-top:2px solid var(--navy)}.side-index a{display:grid;grid-template-columns:36px 1fr;padding:14px 0;border-bottom:1px solid var(--line);font-size:12px;color:#5e7182}.side-index strong{color:var(--blue)}.article section{scroll-margin-top:100px}.article p{font-size:16px;color:#5f7182;max-width:850px}.metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:28px}.metric-box{border:1px solid var(--line);padding:24px;background:#fff}.metric-box .big{font-size:30px;color:var(--navy);font-weight:750}.metric-box small{color:#718191}.callout{border-left:3px solid var(--green);background:#f3f8f4;padding:18px 20px;margin-top:18px;color:#52685a;font-size:13px}
.solution-columns{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}.solution-box{border:1px solid var(--line);padding:30px;background:#fff}.solution-box h3{margin:0 0 20px;color:var(--ink);font-size:22px}.solution-box ul{list-style:none;margin:0;padding:0}.solution-box li{padding:10px 0;border-bottom:1px solid var(--line);font-size:14px}.solution-box li:last-child{border:0}
.equipment-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.equipment-item{border:1px solid var(--line);background:#fff;padding:24px;min-height:220px}.equipment-symbol{height:78px;position:relative;margin-bottom:22px}.equipment-symbol:before{content:"";position:absolute;left:18px;top:12px;width:38px;height:55px;border:2px solid #8193a3;border-radius:16px 16px 5px 5px}.equipment-item:nth-child(2n) .equipment-symbol:before{width:72px;height:34px;border-radius:16px;top:23px}.equipment-item h3{color:var(--ink);margin:0 0 9px}.equipment-item p{font-size:13px;color:#6d7d8e}
.project-table{width:100%;border-collapse:collapse;border-top:2px solid var(--navy)}.project-table th,.project-table td{text-align:left;border-bottom:1px solid var(--line);padding:16px 14px;font-size:13px}.project-table th{font-size:10px;letter-spacing:.1em;text-transform:uppercase;color:#607386;background:#f6f8fa}.project-table td:first-child{font-weight:700;color:var(--ink)}.privacy-note{font-size:12px;color:#7a8b99;margin-top:14px}
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:54px}.principles{display:grid;gap:1px;background:var(--line);border:1px solid var(--line)}.principle{background:#fff;padding:24px}.principle strong{display:block;color:var(--navy);margin-bottom:6px}.principle span{font-size:13px;color:#6b7b8b}
.contact-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:60px}.contact-panel{background:var(--navy2);color:#fff;padding:38px}.contact-panel h2{font-size:34px;margin:0 0 16px}.contact-panel p{color:#c8d7e4}.contact-details{margin-top:36px;border-top:1px solid rgba(255,255,255,.18)}.contact-details div{padding:14px 0;border-bottom:1px solid rgba(255,255,255,.18);font-size:13px}.form{display:grid;grid-template-columns:1fr 1fr;gap:18px}.field{display:flex;flex-direction:column;gap:6px}.field.full{grid-column:1/-1}.field label{font-size:11px;font-weight:700;color:#5d7182;text-transform:uppercase;letter-spacing:.07em}.field input,.field textarea,.field select{font:inherit;border:1px solid #c8d4de;background:#fff;padding:12px 13px;outline:none}.field textarea{min-height:140px;resize:vertical}.field input:focus,.field textarea:focus,.field select:focus{border-color:var(--blue)}
.footer{background:#0a2748;color:#fff;padding:58px 0 22px}.footer-grid{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:60px}.footer .wordmark strong{color:#fff}.footer .mark{border-color:#fff}.footer p{color:#b8c8d6;max-width:330px;font-size:13px}.footer h4{font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:#b7d1e8;margin:0 0 15px}.footer a{display:block;color:#e8eef4;font-size:13px;padding:4px 0}.copyright{margin-top:44px;padding-top:18px;border-top:1px solid rgba(255,255,255,.15);font-size:11px;color:#94a9bb;display:flex;justify-content:space-between}
@media(max-width:980px){.nav{display:none}.hamb{display:block}.hero-grid,.feature-grid,.section-head,.about-grid,.contact-grid{grid-template-columns:1fr}.hero{background:#fff}.hero-grid{min-height:auto;padding:70px 0}.hero h1{font-size:50px}.engineering-panel{border-left:0;border-top:1px solid var(--line);padding:38px 0}.cards{grid-template-columns:repeat(2,1fr)}.tech-grid,.equipment-grid{grid-template-columns:repeat(2,1fr)}.twocol{grid-template-columns:1fr}.side-index{position:relative;top:auto;display:grid;grid-template-columns:repeat(2,1fr)}.band-grid{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:640px){.container{width:min(var(--max),calc(100% - 28px))}.navwrap{height:66px}.hero-grid{padding:48px 0}.hero h1,.page-hero h1{font-size:39px}.hero p,.page-hero p{font-size:16px}.process-strip{grid-template-columns:repeat(3,1fr)}.punit:nth-child(n+4){display:none}.strip-grid,.cards,.tech-grid,.equipment-grid,.solution-columns,.metrics,.band-grid,.form,.footer-grid{grid-template-columns:1fr}.strip-item{padding:18px 0;border-right:0;border-bottom:1px solid rgba(255,255,255,.15)}.section{padding:66px 0}.section-head{gap:22px}.section-head h2,.article h2{font-size:31px}.contact-grid{gap:25px}.side-index{grid-template-columns:1fr}.copyright{gap:15px;flex-direction:column}}

/* v0.3: approved-logo and image workflow */
.wordmark-textonly{min-width:185px}.wordmark-textonly strong{font-size:25px}.wordmark-textonly small{font-size:9px}
.image-slot{border:1px solid #b9c7d4;background:linear-gradient(135deg,#fbfcfd,#f1f5f7);min-height:380px;display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden}
.image-slot:before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(18,62,116,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(18,62,116,.035) 1px,transparent 1px);background-size:34px 34px}
.image-slot-inner{position:relative;z-index:1;max-width:480px;text-align:center;padding:36px}.image-slot-inner strong{display:block;color:var(--navy);font-size:19px;line-height:1.35;margin:8px 0}.image-slot-inner>span:not(.image-slot-kicker){display:block;color:#728395;font-size:13px}.image-slot-kicker{display:block;color:var(--blue);font-size:10px;letter-spacing:.13em;text-transform:uppercase;font-style:normal}
.hero-image-slot{width:100%;min-height:430px;border-left:1px solid var(--line)}
.form-status{font-size:12px;color:#6d7d8e;min-height:20px;margin-top:8px}
.hamb{border:1px solid var(--line);background:#fff;color:var(--navy);font:inherit;font-size:12px;font-weight:700;padding:9px 12px;cursor:pointer}
@media(max-width:980px){
  .nav.open{display:flex;position:absolute;left:0;right:0;top:76px;background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--shadow);padding:14px 24px 22px;flex-direction:column;align-items:stretch;gap:0;max-height:calc(100vh - 76px);overflow:auto}
  .nav.open>a,.nav.open .drop>button{padding:13px 0;border-bottom:1px solid var(--line);text-align:left;width:100%}
  .nav.open .drop{width:100%}.nav.open .mega{display:grid;position:static;width:100%;box-shadow:none;border:0;border-bottom:1px solid var(--line);padding:16px 0;grid-template-columns:repeat(3,1fr)}
.hero-image-slot{border-left:0;border-top:1px solid var(--line);min-height:320px}
}
@media(max-width:640px){.nav.open{top:66px}.nav.open .mega{grid-template-columns:1fr}.image-slot{min-height:300px}.hero-image-slot{min-height:280px}}

/* v0.5 */
.footer-email{display:inline-block;margin-top:10px;color:#b9d1e8;font-weight:650;font-size:13px}
.image-slot{border:1px solid var(--line);background:#f4f7f9;position:relative;overflow:hidden}.image-slot-inner{min-height:280px;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:36px;color:#728292}.image-slot-inner strong{color:var(--navy);font-size:20px;margin:5px 0}.image-slot-inner span{max-width:520px;font-size:13px}.image-slot-kicker{font-size:10px!important;letter-spacing:.14em;text-transform:uppercase;color:var(--blue)!important}.detail-visual{margin-bottom:54px}.clean-list{margin:18px 0 28px;padding:0;list-style:none;border-top:1px solid var(--line);max-width:850px}.clean-list li{padding:11px 0 11px 22px;border-bottom:1px solid var(--line);position:relative}.clean-list li:before{content:"";width:5px;height:5px;background:var(--blue);position:absolute;left:2px;top:20px}.article section+section{margin-top:62px}.page-cta{margin-top:76px!important;padding:34px;border:1px solid var(--line);display:flex;gap:30px;justify-content:space-between;align-items:center;background:var(--soft)}.page-cta h2{font-size:28px}.page-cta p{margin-bottom:0}.technology-cards,.equipment-cards{grid-template-columns:repeat(4,1fr)}
/* hero carousel */
.hero-carousel{position:relative;min-height:620px;display:block}.hero-slide{position:absolute;inset:46px 0 46px 0;opacity:0;pointer-events:none;transform:translateX(12px);transition:opacity .55s ease,transform .55s ease;border-left:1px solid var(--line);background:#fff;display:grid;grid-template-rows:1fr auto}.hero-slide.active{opacity:1;pointer-events:auto;transform:none}.hero-photo{position:relative;min-height:430px;background-image:var(--hero-image);background-position:center;background-size:cover;background-color:#eef3f6}.hero-slide-fallback{position:absolute;inset:0;display:flex;flex-direction:column;justify-content:flex-end;padding:38px;background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(12,47,89,.82));color:#fff}.hero-slide-fallback span{font-size:11px;letter-spacing:.12em;text-transform:uppercase}.hero-slide-fallback strong{font-size:30px;margin-top:6px}.hero-slide-fallback small{opacity:.72;margin-top:6px}.hero-caption{display:flex;gap:18px;justify-content:space-between;align-items:center;padding:18px 22px;border-top:1px solid var(--line);background:#fff}.hero-caption span{font-size:10px;letter-spacing:.12em;color:var(--blue);text-transform:uppercase}.hero-caption strong{font-size:14px;color:var(--ink);text-align:right}.hero-dots{position:absolute;right:18px;bottom:66px;z-index:5;display:flex;gap:8px}.hero-dots button{width:28px;height:3px;border:0;background:rgba(255,255,255,.45);padding:0;cursor:pointer}.hero-dots button.active{background:#fff}
@media(max-width:900px){.technology-cards,.equipment-cards{grid-template-columns:repeat(2,1fr)}.hero-carousel{min-height:520px}.hero-slide{inset:20px 0}.hero-photo{min-height:360px}.page-cta{align-items:flex-start;flex-direction:column}}
@media(max-width:620px){.technology-cards,.equipment-cards{grid-template-columns:1fr}.hero-slide-fallback strong{font-size:24px}.hero-caption{align-items:flex-start;flex-direction:column}.hero-caption strong{text-align:left}}


/* v0.6: richer second-level page copy */
.page-overview{max-width:980px;margin:-8px 0 64px;padding:28px 32px;border-left:3px solid var(--blue);background:#f6f9fb}
.page-overview .overview-label{display:block;margin-bottom:10px;font-size:10px;font-weight:750;letter-spacing:.14em;text-transform:uppercase;color:var(--blue)}
.page-overview p{margin:0;color:#4f6274;font-size:15.5px;line-height:1.72;max-width:920px}
.page-overview p+p{margin-top:13px}
.article>section>p{max-width:880px;font-size:15px;line-height:1.72}
.article>section>.clean-list{margin-top:22px}
@media(max-width:640px){.page-overview{padding:22px 20px;margin-bottom:46px}.page-overview p{font-size:14.5px}}