:root{--paper:#f2f0e9;--ink:#213c42;--red:#b4402c;--mint:#d6e5e1;--muted:#4a6164;--line:#879697;--white:#fff;--header:88px;color:var(--ink);background:var(--paper);font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif;font-synthesis:none;scroll-behavior:smooth;scroll-padding-top:100px}
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.header{position:sticky;top:0;height:var(--header);z-index:20;background:var(--paper);padding:0 4.2vw;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid #213c4230}.brand{display:flex;gap:12px;align-items:center;min-height:48px;flex-shrink:0;font-size:20px;font-weight:650;line-height:1.35}.brand small{display:block;font:10px/1.6 Arial,sans-serif;letter-spacing:.14em;margin-top:4px}.mark{width:40px;height:40px;color:var(--red);fill:none;stroke:currentColor;stroke-width:3}.desktop-nav{display:flex;align-items:center;gap:25px}.desktop-nav a{font-size:14px;display:flex;align-items:center;gap:12px;min-height:48px}.desktop-nav a:last-child{color:var(--red)}.desktop-nav a:hover{border-bottom:1px solid currentColor}.menu-toggle{display:none;width:48px;height:48px;padding:12px;background:none;border:0}.menu-toggle span{display:block;width:24px;height:2px;background:var(--ink);margin:6px 0}.menu-open{overflow:hidden}
.hero{min-height:700px;display:grid;grid-template-columns:1fr 1fr}.hero-copy{padding:62px 0 32px 5.55vw;display:flex;flex-direction:column;align-items:flex-start;position:relative;z-index:1}.hero-copy .eyebrow{display:flex;gap:12px;align-items:center}.dot{width:7px;height:7px;background:var(--red);border-radius:50%}h1{font-size:clamp(58px,7.45vw,112px);line-height:1.23;letter-spacing:-.075em;margin:48px 0 30px}.hero-intro{font-size:18px;color:var(--muted);line-height:1.8;margin-bottom:28px}.hero-art{background:var(--red);position:relative;overflow:hidden}.hero-art img{height:100%;object-fit:cover;object-position:73% center;min-height:650px}.hero-art figcaption{position:absolute;right:25px;bottom:26px;background:var(--paper);padding:12px 16px;font:11px/1.5 Arial,sans-serif;letter-spacing:.08em}.folio{width:90%;font:11px/1.5 Arial,sans-serif;letter-spacing:.08em;margin-top:auto;padding-top:45px;display:flex;justify-content:space-between;gap:20px}
.origin{display:grid;grid-template-columns:.6fr 2fr 1fr;gap:65px;padding-top:110px;padding-bottom:110px;border-bottom:1px solid var(--line)}.section-index>span{font:48px/1 Arial,sans-serif;color:var(--red);display:block;margin-bottom:25px}.section-index p{font:12px/1.9 Arial,"Microsoft YaHei",sans-serif;letter-spacing:.1em}.origin h2{font-size:40px;line-height:1.5;letter-spacing:-.035em;margin-bottom:28px}.origin-copy>p{font-size:16px;margin-bottom:15px;max-width:620px;color:var(--muted)}.origin-note{padding-top:10px}.origin-note>span{font-size:18px}.origin-note p{margin:23px 0;font-size:15px}.origin-note a{display:flex;align-items:center;justify-content:space-between;min-height:48px;font-size:14px;border-bottom:1px solid var(--line)}
.catalogue-heading{display:grid;grid-template-columns:1fr 1.5fr 1fr;gap:40px;align-items:end;padding-top:90px;padding-bottom:60px}.catalogue-heading .eyebrow{align-self:start}.catalogue-heading h2{font-size:50px;line-height:1.4;letter-spacing:-.04em}.catalogue-heading>p:last-child{font-size:15px;color:var(--muted)}.product{display:grid;grid-template-columns:1fr 1.2fr;min-height:520px;align-items:stretch}.product-copy{padding:55px 5.55vw 50px}.product-number{font:13px/1.6 Arial,sans-serif;letter-spacing:.11em;margin-bottom:30px}.product h3{font-size:66px;line-height:1.2;letter-spacing:-.05em;margin-bottom:6px}.product-sub{font:13px/1.5 Arial,sans-serif;letter-spacing:.12em;margin-bottom:22px}.product-copy>p:not(.product-number):not(.product-sub){font-size:16px}.product dl{margin:25px 0}.product dl>div{display:grid;grid-template-columns:100px 1fr;gap:15px;padding:10px 0;font-size:14px}.product dt{color:var(--muted)}.product dd{margin:0}.product figure{overflow:hidden}.product img{height:100%;object-fit:cover}.product-pvc{background:var(--mint)}.product-urea{grid-template-columns:1.2fr 1fr;background:var(--paper)}.product-urea .product-copy,.product-melamine .product-copy{grid-column:2;grid-row:1}.product-urea figure,.product-melamine figure{grid-column:1;grid-row:1}.product-alkali{background:#e4e9e1}.product-melamine{grid-template-columns:1.2fr 1fr;background:var(--red);color:var(--paper)}.product-melamine dt{color:var(--paper)}.product-melamine a:hover{color:#fff}
.directions{background:var(--ink);color:var(--paper);padding-top:100px;padding-bottom:95px}.direction-heading{display:grid;grid-template-columns:1fr 1.5fr 1fr;gap:40px;align-items:start}.direction-heading h2{font-size:50px;line-height:1.4;letter-spacing:-.04em}.direction-heading>p:last-child{font-size:15px;padding-top:5px}.direction-controls{display:flex;gap:0;margin:60px 0 15px;border-bottom:1px solid #f2f0e965}.direction-controls button{flex:1;min-height:64px;display:flex;gap:22px;align-items:center;padding:18px 15px;background:none;border:0;color:var(--paper);font:13px/1.5 Arial,sans-serif;text-align:left;border-bottom:3px solid transparent}.direction-controls button span{font:20px/1.4 "Microsoft YaHei",sans-serif}.direction-controls button[aria-pressed=true]{border-color:var(--paper);background:#f2f0e918}.direction-controls button:hover{background:#f2f0e918}.directions :focus-visible{outline-color:var(--paper)}.direction-body{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:center}.route{width:100%;fill:none}.route-base{stroke:#8fa6a7;stroke-width:2}.active-path{stroke:var(--paper);stroke-width:4;opacity:0}.endpoint{fill:var(--paper);stroke:var(--ink);stroke-width:4;opacity:0}.directions[data-view=pvc] [data-route=pvc],.directions[data-view=urea] [data-route=urea],.directions[data-view=alkali] [data-route=alkali],.directions[data-view=melamine] [data-route=melamine]{opacity:1}.direction-details{padding:45px 0}.direction-details h3{font-size:34px;line-height:1.5;margin:15px 0 25px}.direction-details ol{padding-left:24px;line-height:2.1;font-size:16px;margin:0 0 25px}.direction-details .text-link:hover{color:#fff}
.resource-intro{display:grid;grid-template-columns:1fr 1.05fr;gap:80px;align-items:center;padding-bottom:70px}.resource-intro h2{font-size:52px;line-height:1.4;letter-spacing:-.04em;margin:30px 0}.resource-intro p:last-child{color:var(--muted);font-size:16px}.resource-intro figure{align-self:stretch}.resource-intro img{height:100%;object-fit:cover;min-height:400px}.resource-use{display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:center;padding-top:0}.resource-use img{aspect-ratio:1.2;object-fit:cover}.use-copy h3{font-size:40px;line-height:1.5;margin:22px 0 30px;letter-spacing:-.04em}.relationship{display:flex;gap:25px;border-top:1px solid var(--line);padding:22px 0}.relationship>span{font:13px/1.8 Arial,sans-serif;color:var(--red);padding-top:5px}.relationship p{font-size:24px;line-height:1.6}.relationship b{font-weight:400;margin:0 18px;color:var(--red)}.relationship small{display:block;font-size:14px;color:var(--muted);margin-top:6px}.development{background:var(--mint);display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:center}.development h3{font-size:40px;line-height:1.5;margin:22px 0 28px;letter-spacing:-.04em}.milestone{display:flex;gap:32px;padding:24px 0;border-top:1px solid var(--line)}.milestone time{font:23px/1.6 Arial,sans-serif;color:var(--red);width:95px;flex-shrink:0}.milestone p{font-size:18px;line-height:1.6}.milestone small{font-size:14px;display:block;color:var(--muted);margin-top:8px}.development img{height:100%;object-fit:cover;min-height:380px}
.contact{display:grid;grid-template-columns:1fr 1fr;gap:100px;padding-top:100px;padding-bottom:100px}.contact h2{font-size:54px;line-height:1.4;margin:28px 0 24px;letter-spacing:-.04em}.contact-copy>p:not(.eyebrow){font-size:16px;color:var(--muted)}address{font-style:normal;font-size:17px;line-height:1.9;margin:45px 0 20px}address span{display:block;font-size:13px;color:var(--muted);margin-bottom:10px}.contact-note{font-size:14px!important}form{padding-top:5px}fieldset{border:0;margin:0;padding:0;min-width:0}legend{font-size:22px;margin-bottom:28px}.form-pair{display:grid;grid-template-columns:1fr 1fr;gap:25px}label{display:block;font-size:14px;margin-bottom:25px}input,textarea{width:100%;display:block;border:0;border-bottom:1px solid var(--muted);background:var(--paper);color:var(--ink);min-height:48px;border-radius:0;margin-top:7px;padding:10px 0;resize:vertical}textarea{border:1px solid var(--muted);padding:13px 15px;min-height:140px}textarea::placeholder{color:var(--muted);opacity:1}.submit{display:flex;align-items:center;justify-content:space-between;background:var(--red);color:var(--paper);border:0;padding:17px 24px;min-height:56px;width:100%;font-size:16px}.submit span{font-size:23px}.submit:hover{background:#973523}.submit:disabled{cursor:default;opacity:.7}#form-result{font-size:14px;line-height:1.8;margin-top:18px;color:var(--muted);min-height:50px}footer{padding:42px 5.55vw 25px;background:var(--ink);color:var(--paper)}.footer-top,.footer-bottom{display:flex;justify-content:space-between;align-items:center;gap:30px}.footer-name{font-size:22px;min-height:48px;display:flex;align-items:center;gap:40px}.footer-top>p{font-size:14px}.footer-bottom{border-top:1px solid #f2f0e955;padding-top:20px;margin-top:28px}.footer-bottom p{font-size:12px;line-height:1.8}.footer-bottom p:first-child{font:11px/1.8 Arial,sans-serif;letter-spacing:.1em}footer :focus-visible{outline-color:var(--paper)}
@media(max-width:1100px){.desktop-nav{gap:18px}.desktop-nav a{font-size:13px}.brand{font-size:18px}.hero{min-height:630px}.hero-art img{min-height:620px}.origin{gap:35px;grid-template-columns:.5fr 2fr 1fr}.origin h2{font-size:34px}.catalogue-heading,.direction-heading{grid-template-columns:1fr 1.6fr;gap:30px}.catalogue-heading>p:last-child,.direction-heading>p:last-child{grid-column:2}.product h3{font-size:55px}.product-copy{padding-top:40px;padding-bottom:40px}.resource-intro,.resource-use,.development{gap:45px}.contact{gap:50px}}
@media(max-width:900px){:root{--header:76px;scroll-padding-top:90px}.header{padding:0 28px}.desktop-nav{display:none}.menu-toggle{display:block}#mobile-nav{position:fixed;inset:76px 0 0;background:var(--paper);padding:30px 28px;overflow:auto}#mobile-nav a{font-size:24px;display:flex;align-items:center;justify-content:space-between;min-height:76px;border-bottom:1px solid var(--line)}#mobile-nav a span{font:13px/1.6 Arial,sans-serif;color:var(--red)}.menu-toggle[aria-expanded=true] span:first-child{transform:translateY(4px) rotate(45deg)}.menu-toggle[aria-expanded=true] span:last-child{transform:translateY(-4px) rotate(-45deg)}.section-pad{padding:70px 32px}.hero{min-height:590px}.hero-copy{padding:55px 0 30px 32px}.hero-art img{min-height:585px}h1{font-size:64px;margin:44px 0 28px}.hero-intro{font-size:16px}.folio{flex-direction:column;gap:10px;font-size:10px}.hero-art figcaption{font-size:9px;right:15px;bottom:20px}.origin{grid-template-columns:.5fr 2fr;gap:30px}.origin-note{grid-column:2}.origin-note p{margin:12px 0}.origin-copy>p{font-size:15px}.catalogue-heading{padding-bottom:45px}.catalogue-heading h2,.direction-heading h2{font-size:42px}.product{min-height:530px;grid-template-columns:1fr 1fr}.product-copy{padding:36px 32px}.product h3{font-size:44px}.product-copy>p:not(.product-number):not(.product-sub){font-size:15px}.product dl>div{grid-template-columns:80px 1fr;gap:8px;font-size:13px}.product .text-link{font-size:14px;gap:15px}.product-number{margin-bottom:24px}.direction-body{gap:25px}.direction-details h3{font-size:26px}.direction-details ol{font-size:15px}.direction-controls{margin-top:40px}.direction-controls button{gap:13px;padding:18px 12px}.direction-controls button span{font-size:18px}.resource-intro,.resource-use{gap:32px}.resource-intro h2{font-size:40px}.resource-intro img{min-height:340px}.use-copy h3{font-size:32px}.relationship{gap:15px}.relationship p{font-size:20px}.relationship b{margin:0 10px}.relationship small{font-size:13px}.development{gap:30px}.development h3{font-size:32px}.milestone{gap:18px}.milestone time{font-size:20px;width:80px}.milestone p{font-size:16px}.milestone small{font-size:13px}.contact{gap:35px}.contact h2{font-size:42px}.contact-copy>p:not(.eyebrow){font-size:15px}address{font-size:15px}.form-pair{gap:15px}.footer-name{font-size:18px}}
@media(max-width:600px){:root{--header:72px;scroll-padding-top:84px}.header{padding:0 18px}.brand{font-size:15px;gap:8px}.brand small{font-size:8px;letter-spacing:.08em}.mark{width:31px;height:34px}.menu-toggle{width:44px;height:44px;padding:10px}#mobile-nav{top:72px;padding:24px}.section-pad{padding:60px 24px}.eyebrow{font-size:11px;letter-spacing:.07em}.hero{display:block;min-height:0}.hero-copy{padding:35px 24px 28px}h1{font-size:66px;line-height:1.25;margin:30px 0 22px}.hero-intro{font-size:16px;margin-bottom:18px}.folio{margin-top:28px;padding-top:0;flex-direction:row;width:100%;font-size:8px;gap:10px}.hero-art{height:320px}.hero-art img{height:100%;min-height:0;object-position:70% center}.hero-art figcaption{bottom:18px;font-size:9px;padding:9px 12px}.origin{display:block}.section-index{display:flex;gap:28px;align-items:center;margin-bottom:30px}.section-index>span{font-size:38px;margin:0}.section-index p{font-size:10px}.origin h2{font-size:31px;margin-bottom:22px}.origin-copy>p{font-size:15px}.origin-note{margin-top:30px}.origin-note>span{font-size:16px}.origin-note p{font-size:14px}.catalogue-heading{display:block;padding-bottom:40px}.catalogue-heading h2{font-size:38px;margin:22px 0}.catalogue-heading>p:last-child{font-size:14px}.product{display:flex;flex-direction:column;min-height:0}.product-copy{padding:35px 24px 36px}.product-number{font-size:11px;margin-bottom:20px}.product h3{font-size:49px}.product-sub{font-size:11px;margin-bottom:22px}.product dl{margin:20px 0}.product dl>div{grid-template-columns:85px 1fr;font-size:14px}.product figure{height:290px}.product img{height:100%;object-fit:cover}.product .text-link{font-size:15px;gap:30px}.direction-heading{display:block}.direction-heading h2{font-size:40px;margin:23px 0}.direction-heading>p:last-child{font-size:14px;padding:0}.direction-controls{display:grid;grid-template-columns:1fr 1fr;margin:32px 0 10px;border:0}.direction-controls button{gap:15px;border-bottom:1px solid #f2f0e960;min-height:60px;padding:14px 10px}.direction-controls button[aria-pressed=true]{border-bottom:3px solid var(--paper)}.direction-controls button span{font-size:17px}.direction-body{display:block}.route{height:220px;max-width:500px;margin:10px auto 0;display:block}.direction-details{padding:15px 0 0}.direction-details h3{font-size:28px;margin:15px 0 18px}.direction-details ol{font-size:15px;line-height:1.95;padding-left:22px}.direction-details .text-link{font-size:15px;gap:20px}.resource-intro{display:block;padding-bottom:30px}.resource-intro h2{font-size:38px;margin:23px 0}.resource-intro p:last-child{font-size:15px}.resource-intro figure{margin-top:30px}.resource-intro img{height:280px;min-height:0}.resource-use{display:flex;flex-direction:column;padding-top:0;gap:30px}.resource-use figure,.use-copy{width:100%}.resource-use img{height:270px;aspect-ratio:auto}.use-copy h3{font-size:34px;margin:22px 0 24px}.relationship{padding:21px 0;gap:18px}.relationship p{font-size:21px}.relationship small{font-size:13px}.development{display:block}.development h3{font-size:32px}.milestone{gap:20px}.milestone time{width:80px;font-size:20px}.milestone p{font-size:16px}.milestone small{font-size:13px}.development figure{margin-top:28px}.development img{min-height:0;height:270px}.contact{display:block}.contact h2{font-size:41px;margin:24px 0}.contact-copy>p:not(.eyebrow){font-size:15px}address{margin-top:30px;font-size:15px}.contact form{margin-top:40px}.form-pair{gap:20px}legend{font-size:21px}label{font-size:14px}#form-result{font-size:13px}footer{padding:35px 24px 22px}.footer-top,.footer-bottom{display:block}.footer-name{font-size:17px;justify-content:space-between;gap:15px}.footer-top>p{font-size:13px;margin-top:12px}.footer-bottom{margin-top:24px;padding-top:18px}.footer-bottom p{font-size:11px}.footer-bottom p:first-child{font-size:9px;margin-bottom:12px}}
.hero-copy{background:var(--paper)}.milestone time{color:#983524}.footer-name{gap:14px}.footer-name .mark{color:var(--paper);width:28px;height:30px;flex-shrink:0}
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