.knowledge-page{--k-deep:#075b55;--k-green:#0c776e;--k-green-2:#2a9d8f;--k-orange:#f07b22;--k-paper:#f6f3ed;--k-ink:#153431;--k-muted:#637b76;--k-line:#dce0dc;background:var(--k-paper);min-height:100vh;color:var(--k-ink)}.knowledge-shell{width:min(1200px,100% - 64px);margin-inline:auto}.knowledge-page h1,.knowledge-page h2,.knowledge-page h3,.knowledge-page p{margin-top:0}.knowledge-sr-only{clip:rect(0,0,0,0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.knowledge-header{background:var(--k-deep);color:#fff;border-bottom:1px solid #ffffff1f;height:82px}.knowledge-nav{align-items:center;gap:34px;height:100%;display:flex}.knowledge-logo{background:#fff;align-items:center;height:66px;padding:3px 6px;display:flex;box-shadow:0 7px 24px #0000002e}.knowledge-logo 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#e0e3df;flex-direction:column;min-height:340px;padding:25px 23px;transition:transform .22s,box-shadow .22s;display:flex}.knowledge-article-card:hover{transform:translateY(-5px);box-shadow:0 20px 45px #18342814}.knowledge-card-top{justify-content:space-between;align-items:center;display:flex}.knowledge-card-top span{color:var(--k-orange);font-size:9px}.knowledge-card-top i{background:#d8ddd9;width:32px;height:1px}.knowledge-card-meta{color:#939b96;justify-content:space-between;gap:10px;margin-top:45px;font-size:8px;display:flex}.knowledge-card-meta>span{color:var(--k-green-2)}.knowledge-article-card h3{margin:15px 0 11px;font-size:17px;line-height:1.75}.knowledge-article-card h3 a:hover{color:var(--k-green-2)}.knowledge-article-card>p{color:var(--k-muted);font-size:9px;line-height:2}.knowledge-card-footer{color:#929a95;border-top:1px solid #eceeeb;justify-content:space-between;align-items:center;gap:12px;margin-top:auto;padding-top:20px;font-size:8px;display:flex}.knowledge-card-footer a{color:var(--k-ink);font-weight:750}.knowledge-card-footer b{color:var(--k-orange);margin-right:8px;font-size:14px}.knowledge-empty{text-align:center;background:#fff;padding:70px 30px}.knowledge-empty>span{font-size:21px;font-weight:750}.knowledge-empty p{color:var(--k-muted);margin:12px 0 20px;font-size:10px}.knowledge-empty button{background:var(--k-green);color:#fff;cursor:pointer;border:0;padding:12px 18px;font-size:9px}.knowledge-note{color:#fff;background:linear-gradient(110deg,#061b15f7,#123d2ee6),url(/about-copper-production-v1.png) 50%/cover;padding-block:125px;position:relative}.knowledge-note:after{content:"";background:repeating-linear-gradient(115deg,#0000 0 110px,#ffffff06 111px 112px);position:absolute;inset:0}.knowledge-note-inner{z-index:1;position:relative}.knowledge-note span{color:var(--k-orange);font-size:9px}.knowledge-note h2{margin:17px 0 22px;font-size:clamp(36px,4vw,55px);line-height:1.55}.knowledge-note p{color:#fff9;max-width:670px;margin:0;font-size:11px;line-height:2.1}.knowledge-next{background:linear-gradient(90deg,#e64b22,var(--k-orange));color:#fff;padding-block:84px}.knowledge-next-inner{justify-content:space-between;align-items:center;gap:50px;display:flex}.knowledge-next-inner>div>span{color:#ffffffad;font-size:9px}.knowledge-next h2{margin:10px 0 0;font-size:39px;line-height:1.5}.knowledge-next a{background:var(--k-deep);justify-content:space-between;align-items:center;min-width:220px;min-height:58px;padding:0 20px;font-size:10px;font-weight:750;display:flex}.knowledge-next a b{font-size:16px}.knowledge-footer{color:#fff;background:#051611}.knowledge-footer-inner{align-items:center;gap:30px;min-height:125px;display:flex}.knowledge-footer-logo{background:#fff;height:72px;padding:4px 6px}.knowledge-footer-logo img{width:auto;height:64px;display:block}.knowledge-footer p{color:#ffffff6b;margin:0;font-size:9px}.knowledge-footer-inner>div{color:#ffffff8c;gap:22px;margin-right:auto;font-size:9px;display:flex}.knowledge-detail-hero{background:var(--k-deep);color:#fff;padding-block:90px}.knowledge-detail-head{max-width:940px}.knowledge-back{color:#ffffff85;gap:10px;margin-bottom:55px;font-size:9px;display:inline-flex}.knowledge-back span{color:var(--k-orange)}.knowledge-detail-category{color:var(--k-orange);font-size:10px;font-weight:750}.knowledge-detail-head h1{letter-spacing:-1.5px;max-width:900px;margin:18px 0 20px;font-size:clamp(39px,5vw,64px);line-height:1.55}.knowledge-detail-head>p{color:#ffffff9e;max-width:780px;font-size:13px;line-height:2}.knowledge-detail-meta{color:#ffffff6e;border-top:1px solid #ffffff1f;gap:25px;margin-top:34px;padding-top:23px;font-size:8px;display:flex}.knowledge-detail-layout{grid-template-columns:220px minmax(0,730px);justify-content:center;gap:90px;padding-block:90px;display:grid}.knowledge-detail-layout>aside{border-top:2px solid var(--k-orange);height:max-content;padding:20px 0;position:sticky;top:30px}.knowledge-detail-layout>aside>span{margin-bottom:18px;font-size:10px;font-weight:750;display:block}.knowledge-detail-layout>aside a{border-bottom:1px solid var(--k-line);color:var(--k-muted);padding:10px 0;font-size:8px;line-height:1.8;display:block}.knowledge-detail-lead{border-right:3px solid var(--k-orange);background:#ebece7;margin-bottom:60px;padding:26px 28px;font-size:15px;line-height:2}.knowledge-detail-body section{margin-bottom:60px;scroll-margin-top:30px}.knowledge-detail-body section>span{color:var(--k-orange);font-size:9px}.knowledge-detail-body h2{margin:12px 0 22px;font-size:29px}.knowledge-detail-body section p{color:#4f5d56;font-size:12px;line-height:2.35}.knowledge-detail-disclaimer{background:var(--k-green);color:#fff;padding:26px 28px}.knowledge-detail-disclaimer strong{color:var(--k-orange);font-size:10px}.knowledge-detail-disclaimer p{color:#ffffff9e;margin:9px 0 0;font-size:9px;line-height:2}.knowledge-related{background:#ecece7;padding-block:90px}.knowledge-related-grid{grid-template-columns:repeat(3,1fr);gap:13px;display:grid}.knowledge-related-grid>a{background:#fff;border:1px solid #e0e3df;min-height:210px;padding:24px;position:relative}.knowledge-related-grid span{color:var(--k-green-2);font-size:8px}.knowledge-related-grid h3{margin:18px 0;font-size:15px;line-height:1.8}.knowledge-related-grid small{color:#939a96;font-size:8px}.knowledge-related-grid b{color:var(--k-orange);font-size:16px;position:absolute;bottom:20px;left:22px}@media (max-width:1050px){.knowledge-desktop-nav{display:none}.knowledge-mobile-menu{display:block}.knowledge-contact-link{margin-right:auto}.knowledge-hero-inner{grid-template-columns:1fr 1fr}.knowledge-feature-main{grid-template-columns:1fr}.knowledge-feature-image{min-height:210px}.knowledge-article-grid{grid-template-columns:1fr 1fr}}@media (max-width:760px){.knowledge-shell{width:min(100% - 30px,620px)}.knowledge-header{height:72px}.knowledge-logo{height:58px;padding:3px 5px}.knowledge-logo img{height:50px}.knowledge-contact-link{display:none}.knowledge-hero-inner{grid-template-columns:1fr;width:100%}.knowledge-hero-copy{min-height:520px;padding:65px 25px}.knowledge-hero-visual{min-height:310px}.knowledge-hero-visual:before{display:none}.knowledge-hero 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(max-width:480px){.knowledge-hero h1{font-size:38px}.knowledge-section-head h2,.knowledge-library-head h2{font-size:34px}.knowledge-feature-main{grid-template-columns:1fr}.knowledge-feature-copy{padding:28px}.knowledge-feature-copy h3{font-size:23px}.knowledge-feature-side>a{padding:24px 20px}.knowledge-note h2,.knowledge-next h2{font-size:31px}.knowledge-detail-head h1{font-size:36px}.knowledge-detail-meta{flex-wrap:wrap}.knowledge-detail-lead{font-size:13px}.knowledge-detail-body h2{font-size:25px}}