@font-face{font-family:BarlowCondensed;src:url('assets/barlow-condensed-latin.woff2') format('woff2');font-style:normal;font-weight:600;font-display:swap}
@font-face{font-family:Manrope;src:url('assets/manrope-latin.woff2') format('woff2');font-style:normal;font-weight:200 800;font-display:swap}
:root{--ink:#1b1e1c;--muted:#71756f;--paper:#f7f6f2;--white:#fff;--line:#dedfd8;--orange:#f7663b;--soft:#efeee8;--display:BarlowCondensed,'Arial Narrow',sans-serif;--body:Manrope,'Helvetica Neue',sans-serif;--max:1320px}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{margin:0;color:var(--ink);background:var(--paper);font-family:var(--body);font-size:14px;line-height:1.7;-webkit-font-smoothing:antialiased}body:has(dialog[open]){overflow:hidden}img{max-width:100%;display:block}a{color:inherit;text-decoration:none}button,input,textarea,select{font:inherit}button,a,input,select,textarea{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:default}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid var(--orange);outline-offset:5px}::selection{background:var(--orange);color:#171918}h1,h2,h3,p,figure{margin:0}h1,h2,h3{font-weight:600}h1,h2{font-family:var(--display);line-height:1.02;letter-spacing:-.025em}h2{font-size:clamp(38px,4.1vw,60px)}h3{font-size:17px;line-height:1.4;letter-spacing:-.02em}svg{width:20px;height:20px;flex-shrink:0}.container{max-width:var(--max);width:calc(100% - 112px);margin-inline:auto}.mono,.tiny-label,.eyebrow,.hero-eyebrow,.scroll-cue,.nav-language,.utility-bar{font-size:10px;letter-spacing:.1em;font-weight:600}.eyebrow{margin-bottom:24px;line-height:1.5}.orange{color:var(--orange)}.muted{color:var(--muted)}.section-number{color:var(--muted);margin-right:16px}.section-pad{padding-top:102px;padding-bottom:102px}.section-heading{display:flex;justify-content:space-between;align-items:flex-end;gap:40px;margin-bottom:46px}.section-side{max-width:350px}.section-side p{color:var(--muted);font-size:14px;margin-bottom:20px}.text-link{display:inline-flex;align-items:center;gap:16px;font-size:12px;font-weight:700;border-bottom:1px solid var(--ink);padding-bottom:5px}.text-link:hover{color:#a42f0e;border-color:currentColor}.button{min-height:48px;padding:13px 21px;display:inline-flex;gap:25px;align-items:center;justify-content:space-between;font-size:12px;font-weight:700;border:0;line-height:1.5;transition:background .18s,color .18s}.button svg{width:17px;height:17px}.button-orange{background:var(--orange);color:#171918}.button-orange:hover{background:#ff805b}.button-dark{background:var(--ink);color:#fff}.button-dark:hover{background:#393f39}.button-light{background:var(--paper);color:var(--ink)}.skip-link{position:fixed;top:10px;left:10px;z-index:100;background:var(--orange);padding:12px 20px;transform:translateY(-150%)}.skip-link:focus{transform:none}
.utility-bar{background:var(--ink);color:#d8d9d5;font-size:9px;letter-spacing:.12em;height:32px}.utility-bar .container{display:flex;align-items:center;justify-content:space-between;height:100%}.utility-bar .container>span{display:flex;align-items:center;gap:9px}.utility-bar a{display:flex;align-items:center;gap:12px;font-size:10px;letter-spacing:.03em}.utility-bar a svg{height:12px;width:12px}.status-dot{height:5px;width:5px;border-radius:50%;background:var(--orange);display:inline-block}.site-header{height:91px;background:var(--paper);position:relative;z-index:20;border-bottom:1px solid var(--line)}.header-inner{display:flex;align-items:center;justify-content:space-between;height:100%}.brand{display:inline-flex;align-items:center;gap:10px}.brand-symbol{height:39px;width:39px;color:var(--orange)}.brand strong{font-size:25px;line-height:1.05;letter-spacing:-.06em;font-weight:800;display:block}.brand-period{color:var(--orange)}.brand small{display:block;font-size:8px;letter-spacing:.26em;font-weight:700;margin-top:5px}.primary-nav{display:flex;align-items:center;gap:29px}.primary-nav>a:not(.button){font-size:12px;font-weight:600;position:relative}.primary-nav>a:not(.button):after{content:'';position:absolute;left:0;right:0;bottom:-10px;height:2px;background:var(--orange);transform:scaleX(0);transform-origin:left;transition:transform .18s}.primary-nav>a:hover:after,.primary-nav>a[aria-current]:after{transform:scaleX(1)}.nav-language{display:flex;align-items:center;gap:7px;padding-left:14px;border-left:1px solid var(--line);letter-spacing:0;font-size:11px}.nav-language svg{width:16px;height:16px}.nav-quote{margin-left:-7px;min-height:43px;padding:11px 17px}.menu-toggle{display:none;background:none;border:0}
.hero{position:relative;isolation:isolate;background:#151715;color:#fff;min-height:620px;height:min(740px,calc(100svh - 123px));max-height:800px;overflow:hidden}.hero-image{position:absolute;inset:0;z-index:-2;background-image:url('assets/carbon-hero.webp');background-size:cover;background-position:75% 59%;animation:image-reveal 1.2s ease-out both}.hero:before{content:'';position:absolute;inset:0;background:linear-gradient(90deg,rgba(12,15,13,.93) 0%,rgba(12,15,13,.82) 26%,rgba(12,15,13,.20) 65%,rgba(12,15,13,.03)),linear-gradient(0deg,rgba(12,15,13,.8),transparent 25%);z-index:-1}.hero-content{padding-top:65px;padding-bottom:85px}.hero-eyebrow{display:flex;align-items:center;gap:12px;font-size:9px;letter-spacing:.13em;color:#c6c8c2;animation:rise-in .6s .1s both}.orange-rule{display:inline-block;width:26px;height:2px;background:var(--orange)}.hero h1{font-size:clamp(68px,7.4vw,112px);letter-spacing:-.025em;line-height:.96;margin-top:27px;animation:rise-in .8s .16s both}.hero h1>span:not(.orange){color:#babdb4}.hero-content>p{font-size:13px;line-height:1.85;color:#c6c9c1;max-width:440px;margin-top:27px;animation:rise-in .8s .24s both}.hero-actions{display:flex;align-items:center;gap:29px;margin-top:29px;animation:rise-in .8s .32s both}.hero-secondary{font-size:11px;border-bottom:1px solid #788076;padding-block:9px;display:inline-flex;gap:19px}.hero-secondary span{font-size:16px}.hero-bottom{position:absolute;bottom:24px;left:0;right:0;display:flex;align-items:center;justify-content:space-between;gap:16px;color:#9da397}.hero-bottom .mono{font-size:8px;letter-spacing:.13em}.hero-caption{margin-left:auto;margin-right:38px;color:#a6a99f}.scroll-cue{font-size:8px;color:#d6d8d1;display:flex;align-items:center;gap:17px}.scroll-cue span{font-size:19px}.hero-vertical{position:absolute;right:22px;top:50%;writing-mode:vertical-rl;font-size:8px;letter-spacing:.2em;color:#b7beb0}.origin-strip{border-bottom:1px solid var(--line);background:#eeeee7}.origin-grid{display:grid;grid-template-columns:1fr 1fr 1.4fr 1fr;align-items:center;gap:30px;padding-block:27px}.origin-grid>div{border-right:1px solid #d6d8cf}.tiny-label{display:block;font-size:8px;letter-spacing:.15em;color:var(--muted);margin-bottom:5px}.origin-grid strong{font-size:12px;font-weight:600}.origin-grid>a{font-size:11px;font-weight:700;display:flex;align-items:center;justify-content:flex-end;gap:25px}.material-points{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line)}.material-points article{padding:30px 35px 0 0}.material-points article+article{border-left:1px solid var(--line);padding-left:35px}.point-icon{display:flex;align-items:center;justify-content:center;width:34px;height:34px;border:1px solid #c1c5b9;border-radius:50%;font-size:10px;font-weight:700;margin-bottom:24px}.material-points h3{font-size:20px;margin-bottom:13px}.material-points p{font-size:12px;color:var(--muted);max-width:290px}
.products-section{background:var(--soft);border-block:1px solid var(--line)}.grade-grid{display:grid;grid-template-columns:repeat(4,1fr);border-left:1px solid #d2d5ca}.grade-card{display:block;padding:22px 23px 17px;border:1px solid #d2d5ca;border-left:0;background:#f7f7f1;transition:background .2s,transform .2s}.grade-card:hover{background:#fff;transform:translateY(-5px)}.grade-card-top{display:flex;align-items:center;justify-content:space-between;gap:9px;color:#5d6459}.grade-card-top .mono{font-size:8px;letter-spacing:.02em}.grade-card-top svg{height:17px;width:17px}.grade-name{display:flex;justify-content:space-between;align-items:baseline;font-family:var(--display);font-size:70px;line-height:1;margin-top:47px;margin-bottom:21px;letter-spacing:-.035em}.grade-dot{width:12px;height:12px;border-radius:50%;display:inline-block;background:#3f4838;box-shadow:0 0 0 6px #e6e9df}.grade-card:nth-child(2) .grade-dot{background:#f7663b;box-shadow:0 0 0 6px #f8e2d6}.grade-card:nth-child(3) .grade-dot{background:#8b9480;box-shadow:0 0 0 6px #e2e5dc}.grade-card:nth-child(4) .grade-dot{background:#a7a393;box-shadow:0 0 0 6px #e9e7de}.grade-card h3{font-size:12px;font-weight:800;margin-bottom:6px}.grade-card p{color:var(--muted);font-size:10px;line-height:1.7;min-height:37px;max-width:175px}.grade-card-bottom{display:flex;justify-content:space-between;align-items:flex-end;gap:9px;padding-top:17px;margin-top:25px;border-top:1px solid var(--line);font-size:8px}.grade-card-bottom .mono{font-size:7px;white-space:nowrap;letter-spacing:.03em}.fine-print{font-size:10px!important;color:var(--muted);line-height:1.8;margin-top:19px}.fine-print a{text-decoration:underline}.application-layout{display:grid;grid-template-columns:1.18fr 1fr;gap:65px;align-items:stretch}.application-photo{position:relative;background:#deded7;min-height:430px;overflow:hidden}.application-photo>img{height:100%;width:100%;object-fit:cover;object-position:30% 50%;transition:transform .5s}.application-photo:hover>img{transform:scale(1.025)}.application-photo:after{content:'';position:absolute;inset:45% 0 0;background:linear-gradient(0deg,rgba(18,23,18,.75),transparent);pointer-events:none}.application-photo figcaption{position:absolute;top:16px;left:20px;font-size:7px;letter-spacing:.11em;color:#40473e;z-index:1}.photo-label{position:absolute;bottom:28px;left:30px;z-index:1;color:white}.photo-label .mono{font-size:8px;letter-spacing:.15em}.photo-label strong{display:block;font-family:var(--display);font-size:41px;line-height:1.02;font-weight:600;margin-top:12px}.application-list{border-top:1px solid var(--line);display:flex;flex-direction:column}.application-list>a{padding:27px 0;display:flex;gap:20px;border-bottom:1px solid var(--line);flex:1;align-items:flex-start}.application-list>a>.mono{font-size:9px;color:var(--muted);padding-top:5px}.application-list h3{font-size:17px;margin-bottom:7px}.application-list p{font-size:11px;color:var(--muted)}.application-list svg{margin-left:auto;width:18px;height:18px;margin-top:5px}.application-list a:hover h3{color:#b93812}
.source-section{background:#e7e9e0}.source-grid{display:grid;grid-template-columns:1fr 1fr;gap:100px;align-items:center}.source-art{min-height:600px;position:relative;isolation:isolate;border-inline:1px solid #cdd2c2;display:flex;align-items:center;padding:50px 32px;overflow:hidden;background-image:linear-gradient(#cfd4c550 1px,transparent 1px),linear-gradient(90deg,#cfd4c550 1px,transparent 1px);background-size:45px 45px}.source-word{font-family:var(--display);font-size:clamp(70px,7.6vw,112px);line-height:.95;letter-spacing:-.03em;z-index:1}.source-word span{color:var(--orange)}.source-coordinates{position:absolute;bottom:37px;left:32px;font-size:8px;line-height:1.9}.source-orbit{position:absolute;border:1px solid #bdc5af;border-radius:50%;width:470px;height:470px;right:-200px;top:-120px;z-index:-1}.orbit-two{height:620px;width:620px;right:-270px;top:-195px}.source-node{position:absolute;width:15px;height:15px;background:var(--orange);border:4px solid #e7e9e0;box-shadow:0 0 0 1px var(--orange);right:43px;top:167px;border-radius:50%}.source-copy{padding-block:70px}.source-copy>p:not(.eyebrow){font-size:13px;color:#68715e;margin-top:25px;max-width:420px}.source-benefits{margin-block:25px}.source-benefits>div{border-top:1px solid #cbd1c0;padding-block:12px;display:grid;grid-template-columns:138px 1fr;gap:15px}.source-benefits strong{font-size:11px}.source-benefits p{font-size:10px;color:#68715e}.resource-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.resource-card{border-top:2px solid var(--ink);padding:25px 0 0;display:flex;flex-direction:column;align-items:flex-start}.resource-card .mono{font-size:8px;color:var(--muted);letter-spacing:.12em;margin-bottom:24px}.resource-card h3,.resource-card h2{font-family:var(--body);font-size:19px;font-weight:700;line-height:1.4;margin-bottom:15px;letter-spacing:-.035em}.resource-card p{font-size:12px;color:var(--muted);max-width:330px;margin-bottom:25px}.resource-card .text-link{font-size:10px;margin-top:auto}.resource-card:hover{border-color:var(--orange)}.contact-band{background:var(--orange);padding-block:60px}.contact-band-inner{display:flex;align-items:center;justify-content:space-between;gap:40px}.contact-band .eyebrow{font-size:9px;color:#3c2b1c;margin-bottom:19px}.contact-band h2{font-size:clamp(44px,5vw,72px)}.contact-band h2 span{color:#fff4e8}.contact-band-action{padding-right:50px}.contact-band-action p{font-size:13px;line-height:1.7;margin-bottom:22px}.contact-band .button-orange{background:var(--ink);color:white;min-width:200px}.contact-band .button-orange:hover{background:#393f39}.site-footer{background:var(--ink);color:#edefe7;padding-block:56px 20px}.footer-top{display:grid;grid-template-columns:1.5fr 1fr 1.2fr 1.1fr;gap:40px;padding-bottom:50px}.footer-brand p{font-size:11px;color:#9ba194;line-height:1.9;margin-top:20px}.footer-top h3{font-size:10px;font-weight:500;color:#9ba194;margin:5px 0 20px}.footer-top>div>a:not(.brand),.footer-location,.footer-wechat{font-size:11px;display:flex;align-items:center;gap:8px;margin-bottom:10px}.footer-top a:hover,.footer-wechat:hover{color:var(--orange)}.footer-top svg:not(.brand-symbol){height:13px;width:13px}.footer-wechat{background:none;border:0;color:inherit;padding:0}.footer-location{color:#9ba194}.footer-bottom{border-top:1px solid #3a4035;padding-top:20px;display:flex;justify-content:space-between;align-items:center;gap:20px;font-size:8px;color:#afb5a7}.footer-bottom>a{display:flex;gap:7px;align-items:center}.footer-bottom svg{height:11px;width:11px}
.page-layout{padding-bottom:90px}.page-intro{padding-top:38px;padding-bottom:53px}.breadcrumb{display:flex;gap:12px;font-size:10px;color:var(--muted);margin-bottom:47px;flex-wrap:wrap}.breadcrumb a:hover{text-decoration:underline}.page-intro .eyebrow{color:#646c5e;margin-bottom:21px}.page-intro h1{font-size:clamp(53px,6.1vw,88px);max-width:1000px}.lead{font-size:16px;line-height:1.85;color:#62695c;max-width:680px;margin-top:25px}.page-content{font-size:14px;line-height:1.9}.page-content>p{margin-bottom:22px;max-width:870px}.page-content h2{font-size:42px;line-height:1.12;margin-top:45px;margin-bottom:20px}.page-content h3{margin-top:25px;margin-bottom:12px}.page-content a:not(.button){text-decoration:underline;text-underline-offset:3px}.page-content ul,.page-content ol{padding-left:22px;margin-block:18px 25px}.page-content li{margin-bottom:9px}.page-content blockquote,.content-note{border-left:3px solid var(--orange);background:var(--soft);padding:20px 24px;margin:28px 0;font-size:12px;color:#5e6656}.page-content .lead{font-size:17px}.page-content .content-grid{display:grid;grid-template-columns:1fr 1fr;gap:50px;margin-block:35px}.page-content .content-grid h2{margin-top:0}.page-content figure{margin-block:20px 35px}.page-content figure img{width:100%;max-height:540px;object-fit:cover}.page-content figcaption{font-size:9px;letter-spacing:.04em;color:var(--muted);margin-top:9px}.page-content details{border-top:1px solid var(--line);padding:20px 0}.page-content details:last-of-type{border-bottom:1px solid var(--line)}.page-content summary{font-size:16px;font-weight:700;cursor:pointer}.page-content details p{color:var(--muted);max-width:800px;margin-top:14px;font-size:13px}.page-content .resource-source{font-size:10px;color:var(--muted)}.content-tile{padding:30px;background:var(--soft);border-top:2px solid var(--ink)}.content-tile h3{margin-top:0}.content-tile p{font-size:12px;color:var(--muted)}.table-scroll{overflow-x:auto;margin-top:30px}.grade-table{width:100%;border-collapse:collapse;font-size:12px;min-width:650px}.grade-table thead{background:var(--ink);color:white;text-align:left}.grade-table th,.grade-table td{padding:18px;border-bottom:1px solid var(--line)}.grade-table tbody th{font-size:23px;text-align:left;font-family:var(--display)}.grade-table a{display:inline-flex;gap:12px;align-items:center;font-size:11px}.grade-table svg{width:14px;height:14px}.page-layout>.fine-print{max-width:850px}.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:70px;align-items:start}.article-aside{background:var(--soft);border-top:3px solid var(--orange);padding:27px;position:sticky;top:30px}.article-aside .mono{font-size:9px}.article-aside h2{font-size:36px;margin-block:24px 18px}.article-aside p{font-size:12px;color:var(--muted);margin-bottom:24px}.article-aside .button{font-size:10px;width:100%;gap:12px;padding-inline:15px}.article-aside .text-link{margin-top:20px;font-size:10px}.contact-layout{display:grid;grid-template-columns:1fr 1.6fr;gap:85px}.contact-details h2{font-size:38px;margin-bottom:24px}.contact-details>p{font-size:14px;color:var(--muted)}.contact-method{padding-top:25px}.contact-method>span{display:block;color:var(--muted);font-size:8px;margin-bottom:5px}.contact-method>a,.contact-method>button{display:flex;align-items:center;gap:22px;font-size:18px;letter-spacing:-.03em;background:none;border:0;padding:0;color:var(--ink)}.contact-method svg{width:15px;height:15px}.contact-qr{margin-block:28px;border:1px solid var(--line)}.contact-details .page-content p{font-size:11px;color:var(--muted)}.inquiry-panel{border:1px solid var(--line);padding:37px;background:#fdfdf9}.inquiry-panel h2{font-size:38px;margin-bottom:15px}.inquiry-panel>p{font-size:12px;color:var(--muted);max-width:500px;margin-bottom:27px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.form-grid label{font-size:10px;font-weight:600;display:block}.form-grid label>span{color:#a33714}.form-grid input,.form-grid select,.form-grid textarea{display:block;width:100%;border:1px solid #cdd1c6;border-radius:0;background:var(--paper);padding:12px 10px;min-height:45px;margin-top:7px;color:var(--ink);font-size:12px;resize:vertical}.form-grid textarea{min-height:130px}.form-grid input::placeholder,.form-grid textarea::placeholder{font-size:11px;color:#7c8274}.field-wide{grid-column:1/-1}.form-actions{display:flex;align-items:center;gap:25px;margin-top:25px;flex-wrap:wrap}.form-actions>.text-link{background:none;border:0;border-bottom:1px solid var(--ink);padding:4px 0;font-size:11px}.inquiry-panel .fine-print{font-size:9px!important}.inquiry-panel [role=status]{font-size:11px;color:#425a32;margin-top:15px}.wechat-dialog{width:min(420px,calc(100% - 40px));padding:35px;text-align:center;border:0;background:var(--paper);color:var(--ink);box-shadow:0 30px 120px #0005}.wechat-dialog::backdrop{background:#10150eaa;backdrop-filter:blur(4px)}.wechat-dialog .eyebrow{font-size:9px}.wechat-dialog h2{font-size:43px}.wechat-dialog>img{margin:28px auto 20px}.wechat-dialog .button{margin-top:18px}.dialog-close{position:absolute;right:12px;top:8px;background:none;border:0;font-size:27px;color:var(--ink);line-height:1.5}.copy-status{margin-top:15px;font-size:10px;min-height:16px}.not-found{padding-bottom:100px}.not-found .button{margin-top:30px}.pagination{margin-top:30px;display:flex;gap:15px}
@keyframes rise-in{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}@keyframes image-reveal{from{opacity:.4;transform:scale(1.025)}to{opacity:1;transform:scale(1)}}
@media(min-width:1600px){.hero-image{background-position:75% 65%;background-size:100% auto}.hero-content{padding-top:80px}.hero h1{font-size:116px}}
@media(max-width:1180px){.container{width:calc(100% - 72px)}.primary-nav{gap:22px}.hero{height:650px}.hero h1{font-size:94px}.hero-content{padding-top:60px}.grade-card{padding-inline:17px}.grade-name{font-size:64px}.grade-card-bottom{flex-wrap:wrap;min-height:50px}.application-layout{gap:38px}.source-grid{gap:60px}.source-art{min-height:580px}.source-benefits>div{display:block}.source-benefits p{margin-top:4px}.footer-top{gap:25px}.contact-layout{gap:45px}.inquiry-panel{padding:28px}}
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