@font-face{font-family:Inter;src:url('/eco-design-20261107/assets/inter-400.woff') format('woff');font-weight:400;font-display:swap}@font-face{font-family:Inter;src:url('/eco-design-20261107/assets/inter-600.woff') format('woff');font-weight:600;font-display:swap}
:root{--ink:#17383d;--blue:#1f75bb;--cyan:#00a4d8;--paper:#fafbf9;--line:#cedad9;--muted:#53696e;--pale:#e7eff0}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:105px}body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.65 Inter,Arial,sans-serif}img{display:block;max-width:100%;height:auto}a{color:inherit;text-decoration:none}button,input,textarea,select{font:inherit}button,a,input,select,textarea{-webkit-tap-highlight-color:transparent}a,button{touch-action:manipulation}button{cursor:pointer}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid var(--blue);outline-offset:5px}a:hover{color:var(--blue)}p{margin:0 0 24px}h1,h2,h3{font-weight:400;line-height:1.07;letter-spacing:-.055em;margin:0 0 24px}h1{font-size:clamp(48px,6.2vw,90px)}h2{font-size:clamp(35px,3.5vw,53px)}h3{font-size:26px;letter-spacing:-.035em}.wrap{width:min(1400px,calc(100% - 100px));margin:0 auto}.eyebrow{font-size:11px;font-weight:600;letter-spacing:.15em;line-height:1.6;margin:0 0 26px}.skip{position:fixed;top:-100px;left:20px;padding:16px;background:white;z-index:100}.skip:focus{top:12px}.topbar{background:var(--ink);color:#fff;font-size:10px;letter-spacing:.14em;padding:9px 0}.topbar .wrap{display:flex;justify-content:space-between}.topbar a:hover{color:#8cddf5}header{position:sticky;top:0;z-index:20;background:#fafbf9f5;backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}.navwrap{display:flex;align-items:center;gap:36px;min-height:95px}.brand{display:block;flex-shrink:0;line-height:1}.brand>span{font-size:30px;font-weight:600;letter-spacing:-.07em;display:flex;align-items:baseline}.brand .brand-pfas{font-weight:400;color:var(--blue)}.brand i{height:6px;width:6px;background:var(--cyan);display:block;margin-left:4px}.brand small{display:block;font-size:8px;letter-spacing:.2em;margin-top:9px}nav{display:flex;gap:29px;align-items:center;margin-left:auto;font-size:13px}nav a{position:relative;padding:10px 0}nav a[aria-current=page]:after{content:'';position:absolute;bottom:0;height:2px;left:0;right:0;background:var(--cyan)}.nav-actions{display:flex;align-items:center;gap:25px}.search-toggle{border:0;background:none;padding:10px;color:var(--ink);display:flex}.nav-contact{border-bottom:1px solid var(--blue);padding:9px 0;font-size:12px}.menu-toggle{display:none}.hero{display:grid;grid-template-columns:1fr 1fr;min-height:630px;max-width:1800px;margin:auto}.hero-copy{padding:53px 45px 50px max(50px,calc((100vw - 1400px)/2));background:#e7eff0}.hero-copy h1{font-size:clamp(45px,5.5vw,78px);margin-bottom:26px}.hero-pfas{display:block;color:var(--blue);font-size:1.5em;font-weight:600;letter-spacing:-.09em;line-height:.94;margin:8px 0 22px}.hero-lead{font-size:17px;line-height:1.65;letter-spacing:-.01em}.button{display:inline-flex;align-items:center;justify-content:space-between;gap:36px;border:1px solid var(--ink);background:var(--ink);color:#fff;font-size:13px;font-weight:600;padding:17px 22px;min-height:54px;text-align:left}.button span{font-size:20px;font-weight:400;line-height:1}.button:hover{background:var(--blue);border-color:var(--blue);color:#fff}.subtle{display:block;font-size:12px;margin-top:20px}.hero-photo{margin:0;position:relative;min-height:590px;overflow:hidden;background:var(--ink)}.hero-photo>img{position:absolute;height:100%;width:100%;object-fit:cover;object-position:50% center}.hero-photo:after{content:'';position:absolute;inset:0;background:linear-gradient(0deg,#0a2528c7,transparent 60%)}.hero-photo figcaption{position:absolute;bottom:65px;left:38px;right:25px;color:white;z-index:1;font-size:31px;line-height:1.25;letter-spacing:-.04em}.hero-photo figcaption span{font:10px/3 Inter;letter-spacing:.15em}.photo-caption{position:absolute;bottom:22px;left:38px;color:#fff;z-index:1;font-size:9px;letter-spacing:.03em}.partnerline{display:flex;align-items:center;gap:22px;padding:28px 0;border-bottom:1px solid var(--line)}.partnerline>span{font-size:9px;letter-spacing:.12em;margin-right:30px}.partnerline img{width:51px;max-height:48px;object-fit:contain}.partnerline p{font-size:12px;line-height:1.6;margin:0}.partnerline strong{font-weight:400;color:var(--muted)}.partnerline a{margin-left:auto;font-size:12px}.section{padding-top:96px;padding-bottom:96px}.sectionhead{display:grid;grid-template-columns:.66fr 1.45fr 1fr;gap:38px;align-items:start;margin-bottom:40px}.sectionhead h2{margin:0}.sectionhead>.eyebrow{margin-top:7px}.sectionhead>p:not(.eyebrow){font-size:14px;margin-top:6px;color:var(--muted)}.sectionhead>.textlink{margin-top:14px;justify-self:end}.textlink{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:14px 0;border-bottom:1px solid var(--line);font-size:13px}.sector-list{border-top:1px solid var(--line);margin-left:22.4%}.sector-list>a{display:grid;grid-template-columns:45px 1fr 1fr 32px;gap:22px;align-items:center;border-bottom:1px solid var(--line);padding:25px 8px;transition:background .15s,padding .15s}.sector-list>a:hover{background:#e7eff0;padding-left:18px}.sector-list h3{font-size:29px;margin:0}.sector-list p{font-size:12px;margin:0;color:var(--muted);max-width:200px}.num{color:var(--blue);font-size:11px}.arrow{font-size:29px}.technology{background:var(--ink);color:#fff;padding:70px 0}.techgrid{display:grid;grid-template-columns:1fr .85fr;gap:100px;align-items:center}.tech-copy h2{font-size:clamp(40px,4.3vw,66px);line-height:1.06;margin-bottom:32px}.tech-copy h2 em{font-family:Georgia,serif;font-weight:400;letter-spacing:-.035em;color:#99dce9}.tech-copy p:not(.eyebrow){max-width:440px;font-size:14px;color:#d2e1e2}.tech-copy .eyebrow{color:#9dcbd0}.button.light{background:#dff1f1;color:var(--ink);border-color:#dff1f1;margin-top:12px}.button.light:hover{background:#fff}.product{margin:0;background:white;color:var(--ink);position:relative;padding:25px 30px}.product img{height:390px;width:100%;object-fit:contain;margin:20px 0}.fig-label{font-size:9px;letter-spacing:.15em;color:var(--muted)}.product figcaption{border-top:1px solid var(--line);padding-top:20px;font-size:12px}.product small{font-size:10px;color:var(--muted)}.process{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:50px;border-top:1px solid var(--line)}.process article{padding:26px 27px 5px 0;border-right:1px solid var(--line);margin:0 26px 0 0}.process article:last-child{border:0;margin-right:0}.process span{font-size:10px;letter-spacing:.1em;color:var(--blue)}.process h3{font-size:25px;line-height:1.2;letter-spacing:-.04em;margin:24px 0 16px}.process p{font-size:13px;color:var(--muted)}.comparison-strip{background:#e7eff0;display:grid;grid-template-columns:.8fr 1.5fr;gap:20px 60px;padding:48px 55px;position:relative}.comparison-strip h2{grid-column:2;grid-row:1/3;margin:0}.comparison-strip p:not(.eyebrow){grid-column:1;font-size:13px;color:var(--muted);margin:0}.comparison-strip .button{grid-column:2;justify-self:start;margin-top:6px}.knowledge-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:60px}.feature-story>img{width:100%;height:290px;object-fit:cover}.feature-story>div{padding-top:26px}.feature-story .eyebrow{margin-bottom:14px}.feature-story h3{font-size:35px;line-height:1.12}.feature-story span,.story-list span{font-size:12px}.story-list>a{display:block;border-top:1px solid var(--line);padding:22px 0}.story-list small{font-size:10px;color:var(--blue);letter-spacing:.12em}.story-list h3{font-size:24px;line-height:1.2;margin:12px 0}.contact-strip{background:#dce9e8;padding:68px 0}.contact-strip .wrap{position:relative}.contact-strip h2{font-size:clamp(35px,4.2vw,62px)}.contact-strip h2 em{font-family:Georgia,serif;letter-spacing:-.035em}.contact-strip .button{position:absolute;right:0;top:70px}.contact-strip p:last-child{font-size:12px;color:var(--muted);margin:32px 0 0}footer{background:#f0f3f1;padding-top:60px}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}.footer-grid p{font-size:15px;line-height:1.45;margin-top:20px}.footer-grid small{font-size:11px;color:var(--muted)}.footer-grid h2{font-size:11px;letter-spacing:0;font-weight:600;margin:0 0 25px}.footer-grid>div>a:not(.brand){display:block;font-size:12px;line-height:2.5}.footer-bottom{display:flex;justify-content:space-between;border-top:1px solid var(--line);padding-top:22px;padding-bottom:22px;margin-top:55px;font-size:10px;color:var(--muted)}.breadcrumb{display:flex;gap:13px;font-size:10px;padding-top:22px;color:var(--muted)}.pageintro{padding-top:62px;padding-bottom:55px}.pageintro h1{max-width:980px}.lead{font-size:20px;line-height:1.55;max-width:710px;color:var(--muted);margin:30px 0 0}.article-layout{display:grid;grid-template-columns:minmax(0,2fr) minmax(230px,.8fr);gap:100px;padding-bottom:90px;align-items:start}.article-layout article{max-width:820px}.article-layout article h2{font-size:30px;line-height:1.2;letter-spacing:-.03em;margin:38px 0 20px}.article-layout article>h2:first-child{margin-top:0}.article-layout article p,.article-layout article li{font-size:16px;line-height:1.8;color:#344f54}.article-layout article li{padding:4px 0}.article-layout article ul,.article-layout article ol{padding-left:23px}.article-image{width:100%;max-height:420px;object-fit:cover}.image-note{font-size:11px!important;color:var(--muted);line-height:1.6!important;margin:12px 0 30px}.side-index{border-top:3px solid var(--blue);padding-top:25px;position:sticky;top:125px}.side-index h2{font-size:30px;letter-spacing:-.03em}.side-index p{font-size:13px;color:var(--muted)}.side-index .button{width:100%;font-size:12px;padding:16px;gap:10px}.side-index .textlink{padding:19px 0}.product-aside img{margin:0 0 20px;max-height:330px;width:100%;object-fit:contain;background:white}.sources{border-top:1px solid var(--line);margin-top:42px;padding-top:10px}.sources h2{font-size:17px!important}.sources li,.sources p{font-size:12px!important;line-height:1.6!important}.sources a{text-decoration:underline;text-underline-offset:4px}.table-scroll{overflow-x:auto;margin-bottom:22px}table{border-collapse:collapse;width:100%;min-width:760px;font-size:13px;text-align:left}th,td{padding:22px;vertical-align:top;border-bottom:1px solid var(--line);border-right:1px solid var(--line)}th{font-weight:600}thead{background:var(--ink);color:white}thead th{font-size:20px;font-weight:400}thead small{font-size:11px}thead th:last-child{background:var(--blue)}tbody th{background:#e7eff0;min-width:130px}td:last-child,th:last-child{border-right:none}.knowledge-index{display:grid;grid-template-columns:1fr 1fr;gap:0 60px;padding-bottom:80px}.knowledge-index>a{border-top:1px solid var(--line);padding:35px 0}.knowledge-index span{font-size:11px;color:var(--blue);letter-spacing:.12em}.knowledge-index h2{font-size:36px;margin:22px 0}.knowledge-index p{font-size:15px;color:var(--muted)}.knowledge-index b{font-size:12px;font-weight:400}.contact-layout{display:grid;grid-template-columns:1fr 1fr;gap:90px;padding-bottom:90px}.email{display:block;font-size:clamp(18px,2.1vw,30px);letter-spacing:-.04em;margin-bottom:32px}.contact-layout form{background:#e7eff0;padding:35px}.contact-layout form h2{font-size:29px;letter-spacing:-.03em}.contact-layout form p{font-size:12px}.contact-layout label{display:block;font-size:12px;margin:22px 0}.contact-layout input,.contact-layout select,.contact-layout textarea{display:block;width:100%;background:#fff;border:1px solid #9eafb0;padding:12px;margin-top:7px;color:var(--ink);border-radius:0}#form-status{margin-top:18px;margin-bottom:0}dialog{border:0;width:min(700px,calc(100% - 30px));padding:32px;background:var(--paper);color:var(--ink);max-height:85vh}dialog::backdrop{background:#0b262acf;backdrop-filter:blur(6px)}.search-head{display:flex;justify-content:space-between;gap:20px}.search-head h2{font-size:32px}.close-search{border:0;background:none;font-size:30px;color:var(--ink);align-self:start}dialog label{font-size:12px}dialog input{display:block;width:100%;margin:12px 0 20px;padding:15px;border:1px solid var(--muted)}#search-results a{display:block;border-top:1px solid var(--line);padding:15px 0}#search-results strong{font-size:14px}#search-results p{font-size:12px;margin:6px 0;color:var(--muted)}
@media(min-width:1800px){.hero-copy{padding-left:200px}}@media(max-width:1150px){.wrap{width:calc(100% - 60px)}.navwrap{gap:25px}nav{gap:18px}.nav-actions{gap:12px}.hero-copy{padding-left:30px;padding-right:30px}.hero{min-height:580px}.hero-photo{min-height:580px}.techgrid{gap:55px}.sectionhead{grid-template-columns:.65fr 1.2fr 1fr;gap:25px}.sector-list{margin-left:0}.article-layout{gap:55px}.contact-strip .button{position:static;margin-top:10px}.contact-layout{gap:40px}.footer-grid{gap:25px}}@media(max-width:850px){.wrap{width:calc(100% - 40px)}.topbar{font-size:8px;letter-spacing:.08em}.navwrap{min-height:80px;gap:15px;flex-wrap:wrap}.brand>span{font-size:26px}.menu-toggle{display:block;margin-left:auto;border:0;background:none;color:var(--ink);padding:12px 5px;font-size:12px}.nav-actions{margin-left:0}.nav-contact{display:none}nav{display:none;width:100%;order:4;margin:0;flex-wrap:wrap;gap:6px 26px;padding:0 0 20px}nav.open{display:flex}nav a{font-size:14px}.hero-copy{padding:40px 20px}.hero-copy h1{font-size:47px}.hero-photo{min-height:550px}.hero-photo figcaption{font-size:25px;left:23px}.photo-caption{left:23px;font-size:8px}.partnerline{gap:15px}.partnerline>span{display:none}.partnerline a{font-size:10px}.section{padding-top:65px;padding-bottom:65px}.sectionhead{grid-template-columns:1fr 1fr}.sectionhead>.eyebrow{grid-column:1/-1;margin-bottom:0}.sectionhead h2{font-size:38px}.techgrid{gap:30px;grid-template-columns:1fr 1fr}.tech-copy h2{font-size:39px}.product{padding:20px}.product img{height:330px}.process{grid-template-columns:1fr 1fr;row-gap:25px}.process article:nth-child(2){border:0;margin-right:0}.comparison-strip{padding:35px;gap:20px 30px}.comparison-strip h2{font-size:35px}.knowledge-grid{gap:30px}.feature-story>img{height:240px}.feature-story h3{font-size:29px}.story-list h3{font-size:21px}.footer-grid{grid-template-columns:1fr 1fr;gap:35px}.footer-bottom{flex-wrap:wrap;gap:12px}.article-layout{grid-template-columns:minmax(0,1fr) 220px;gap:30px}.pageintro{padding-top:40px}.contact-layout{grid-template-columns:1fr}.knowledge-index{gap:0 30px}}@media(max-width:600px){.topbar a{display:none}.hero{grid-template-columns:1fr}.hero-copy{padding:39px 24px 36px}.hero-copy h1{font-size:53px;line-height:1.04}.hero-pfas{font-size:1.45em;margin-bottom:18px}.hero-lead{font-size:15px}.hero-photo{min-height:330px}.hero-photo figcaption{bottom:54px;font-size:28px}.partnerline{flex-wrap:wrap;padding:22px 0}.partnerline p{font-size:11px}.partnerline a{margin:0 0 0 auto}.sectionhead{display:block;margin-bottom:28px}.sectionhead .eyebrow{margin-bottom:22px}.sectionhead h2{margin-bottom:22px}.sectionhead .textlink{display:inline-flex;margin-top:0}.sectionhead>p:not(.eyebrow){max-width:350px}.sector-list>a{grid-template-columns:26px 1fr 25px;gap:10px;padding:21px 0}.sector-list h3{font-size:26px}.sector-list p{grid-column:2;grid-row:2;font-size:11px;max-width:none}.sector-list .arrow{grid-column:3;grid-row:1/3}.technology{padding:45px 0}.techgrid{grid-template-columns:1fr;gap:35px}.tech-copy h2{font-size:46px}.product img{height:335px}.process{gap:25px 15px;margin-top:25px}.process article{padding:20px 14px 0 0;margin:0}.process h3{font-size:22px}.process p{font-size:12px}.process span{font-size:9px}.comparison-strip{display:block;padding:28px}.comparison-strip h2{margin-bottom:24px}.comparison-strip .button{margin-top:22px}.knowledge-grid{grid-template-columns:1fr;gap:30px}.feature-story>img{height:260px}.feature-story h3{font-size:32px}.contact-strip{padding:45px 0}.contact-strip h2{font-size:39px}.footer-grid{gap:35px 20px}.footer-grid>div:first-child{grid-column:1/-1}.footer-grid>div:last-child{grid-column:1/-1}.footer-grid h2{margin-bottom:15px}.footer-bottom{display:block}.footer-bottom>*{display:block;margin-bottom:8px}.pageintro{padding-bottom:36px}.pageintro h1{font-size:46px}.lead{font-size:17px;margin-top:23px}.breadcrumb{font-size:9px;line-height:1.5}.article-layout{grid-template-columns:1fr;padding-bottom:55px}.side-index{position:static}.article-layout article h2{font-size:27px}.article-layout article p,.article-layout article li{font-size:15px}.article-image{max-height:320px}.knowledge-index{grid-template-columns:1fr}.knowledge-index h2{font-size:32px}.contact-layout{padding-bottom:55px}.contact-layout form{padding:24px}.contact-layout .button{font-size:12px;padding:15px;gap:15px}dialog{padding:24px}.search-head h2{font-size:28px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}