/* ECG Commodity Solutions Ltd — site and editorial components. */
:root{--ink:#18221d;--deep:#121c17;--panel:#1e2b23;--paper:#f3f0e8;--white:#f7f4ec;--copper:#d0ab84;--copper-dark:#805831;--muted:#b5beb4;--line:#39453b;--line-dark:#c6c9bc;--radius:2px;--font:Arial,Helvetica,sans-serif;--serif:Georgia,'Times New Roman',serif;--mono:'SFMono-Regular',Consolas,'Liberation Mono',monospace;--wrap:1280px;--gutter:clamp(22px,5vw,80px)}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:30px}body{margin:0;background:var(--deep);color:var(--white);font:400 16px/1.7 var(--font);-webkit-font-smoothing:antialiased}body.menu-open{overflow:hidden}button,input,select,textarea{font:inherit}button,a,input,select,textarea{-webkit-tap-highlight-color:transparent}button{cursor:pointer;color:inherit}a{color:inherit;text-decoration:none}a,button{touch-action:manipulation}img,svg{display:block;max-width:100%}img{height:auto}h1,h2,h3,h4,p{margin-top:0}h1,h2,h3,h4{font-weight:400;line-height:1.14;letter-spacing:-.035em}h1{font-size:clamp(46px,5.8vw,82px)}h2{font-size:clamp(34px,3.6vw,51px)}h3{font-size:26px}h4{font-size:21px}p{margin-bottom:1.25em}ul{padding-left:1.3em}li+li{margin-top:.55em}figure{margin:0}::selection{background:var(--copper);color:var(--ink)}:focus-visible{outline:3px solid var(--copper);outline-offset:5px}.paper :focus-visible{outline-color:#775231}[hidden]{display:none!important}.wrap{width:min(var(--wrap),calc(100% - var(--gutter)*2));margin-inline:auto}.section{padding-block:96px}.section-sm{padding-block:72px}.paper{background:var(--paper);color:var(--ink)}.muted{color:var(--muted)}.paper .muted,.paper .lede{color:#53604f}.eyebrow{font:12px/1.5 var(--mono);letter-spacing:.075em;text-transform:uppercase;margin:0 0 25px;color:var(--copper)}.paper .eyebrow{color:var(--copper-dark)}.label{font:11px/1.65 var(--mono);letter-spacing:.06em;text-transform:uppercase}.lede{font-size:18px;line-height:1.7;color:var(--muted);max-width:650px}.small{font-size:14px;line-height:1.75}.section-head{display:flex;align-items:end;justify-content:space-between;gap:55px;margin-bottom:48px}.section-head h2{margin:0;max-width:720px}.section-head p{max-width:370px;margin:0;color:#58624f}.section-head .text-link{flex-shrink:0}.text-link{display:inline-flex;align-items:center;gap:15px;border-bottom:1px solid currentColor;padding:5px 0;font-size:14px;line-height:1.5;font-weight:400}.text-link:hover{text-decoration:underline;text-underline-offset:4px}.arrow{width:17px;height:17px;flex-shrink:0}.button{display:inline-flex;align-items:center;justify-content:space-between;gap:22px;min-height:52px;padding:15px 21px;border:1px solid var(--paper);border-radius:var(--radius);background:var(--paper);color:var(--ink);font-size:14px;line-height:1.4;transition:background .18s ease,border-color .18s ease}.button:hover{background:var(--copper);border-color:var(--copper)}.button .arrow-wrap{display:block;background:none;color:inherit}.button.dark{background:var(--ink);color:var(--paper);border-color:var(--ink)}.button.dark:hover{background:#344335;border-color:#344335}.button.outline{background:none;color:var(--paper);border-color:var(--line)}.button.outline:hover{border-color:var(--paper)}.paper .button.outline{color:var(--ink);border-color:var(--line-dark)}.button:disabled{opacity:.65;cursor:wait}.button-row{display:flex;align-items:center;gap:26px;flex-wrap:wrap;margin-top:32px}.skip-link{position:fixed;top:8px;left:8px;z-index:999;transform:translateY(-160%);background:var(--paper);color:var(--ink);padding:12px 20px}.skip-link:focus{transform:none}.rule{height:1px;background:var(--line);margin-block:28px}
/* Navigation */
.site-header{height:94px;position:absolute;top:0;left:0;width:100%;z-index:40;background:var(--deep);border-bottom:1px solid var(--line)}.header-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:28px}.brand{display:inline-flex;align-items:center;gap:11px;flex-shrink:0}.brand-mark{width:30px;height:36px;color:var(--copper)}.brand-word{font-size:32px;font-weight:700;line-height:1;letter-spacing:-1.8px}.brand-description{font:9px/1.55 var(--mono);letter-spacing:.05em;margin-left:6px;padding-left:16px;border-left:1px solid var(--line)}.desktop-nav{display:flex;gap:24px;align-items:center}.desktop-nav>a{font-size:13px;color:#c9d0c4;padding-block:8px;border-bottom:1px solid transparent}.desktop-nav>a:hover,.desktop-nav>a[aria-current]{color:var(--white);border-bottom-color:var(--copper)}.header-contact{padding:11px 15px;border:1px solid #83907e;border-radius:2px;font-size:13px;display:inline-flex;gap:14px;align-items:center;min-height:44px}.header-contact:hover{background:var(--paper);color:var(--ink)}.menu-toggle{display:none;width:44px;height:44px;background:none;border:1px solid #697763;border-radius:2px;align-items:center;justify-content:center;flex-direction:column;gap:6px}.menu-toggle span{height:1px;width:19px;background:var(--paper)}.mobile-menu{position:fixed;inset:94px 0 0;z-index:39;background:var(--ink);padding:32px var(--gutter);overflow:auto}.mobile-menu nav{display:flex;flex-direction:column}.mobile-menu nav a{font-size:27px;padding:13px 0;border-bottom:1px solid var(--line)}.mobile-menu .small{margin-top:28px}.read-progress{height:2px;position:fixed;top:0;left:0;width:0;z-index:100;background:var(--copper)}
/* Home: type and an original drawn plate, rather than documentary imagery. */
.hero{position:relative;background:var(--deep);padding-top:94px}.hero-editorial{display:grid;grid-template-columns:1.12fr 1fr;align-items:center;gap:4%;padding-top:65px;padding-bottom:70px;min-height:680px}.hero-copy{padding:12px 0}.hero .eyebrow{font-size:11px;margin-bottom:35px}.hero h1{font-size:clamp(58px,6vw,87px);line-height:1.03;letter-spacing:-.055em;margin-bottom:30px}.hero h1 span{font-family:var(--serif);font-weight:400;font-style:italic;color:var(--copper);letter-spacing:-.055em}.hero-description{font-size:17px;line-height:1.8;color:#c0c9ba;max-width:455px}.hero .button-row{gap:23px;align-items:flex-start;flex-direction:column}.hero-plate{width:100%;max-width:560px;margin-left:auto}.hero-plate img{width:100%;height:auto}.hero-bottom{display:flex;align-items:center;justify-content:space-between;gap:30px;padding:22px 0;border-top:1px solid var(--line);margin:0 auto;width:min(var(--wrap),calc(100% - var(--gutter)*2))}.scroll-cue{display:inline-flex;align-items:center;gap:15px}.hero-bottom .label{font-size:11px;color:#c2cabb}.intro-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:12%;align-items:start;margin-bottom:60px}.intro-grid h2{margin-bottom:0}.intro-grid p{color:#55614e;margin:0}.services-grid{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line-dark)}.service-card{padding:30px 32px 0 0;display:flex;flex-direction:column;align-items:start}.service-card+.service-card{border-left:1px solid var(--line-dark);padding-left:32px}.service-top{font:12px var(--mono);color:#686f5c;margin-bottom:32px}.service-card h3{font-size:27px;margin-bottom:18px}.service-card p{font-size:15px;line-height:1.8;color:#54604d;margin-bottom:24px}.service-card .text-link{margin-top:auto}.partnership-home{background:#233229}.partnership-editorial{display:grid;grid-template-columns:1.5fr 1fr;gap:12%;align-items:center}.partnership-editorial h2{font-size:clamp(35px,3.8vw,56px);max-width:730px}.partnership-editorial .lede{max-width:540px;font-size:17px}.partnership-note{border:1px solid #62705d;padding:35px}.partnership-note .label{display:block;color:var(--copper);margin-bottom:20px}.partnership-note>p:not(.small){font:26px/1.45 var(--serif);letter-spacing:-.015em}.partnership-note .small{color:#c1cabb}.partnership-note .text-link{white-space:normal}.about-strip{border-block:1px solid var(--line)}.about-editorial{display:grid;grid-template-columns:1.15fr 1fr;gap:12%;align-items:start}.about-editorial h2{font-size:42px;margin-bottom:0}.about-editorial p{color:var(--muted)}
/* Mineral specification selector */
.minerals-layout{display:grid;grid-template-columns:1fr 1fr;gap:8%;align-items:start}.mineral-tabs{border-top:1px solid var(--line)}.mineral-tab{border:0;border-bottom:1px solid var(--line);width:100%;display:flex;align-items:center;gap:19px;padding:19px 15px 19px 0;background:none;color:#bcc5b7;text-align:left;transition:background .18s}.mineral-tab[aria-selected=true]{background:#243328;color:var(--paper)}.mineral-tab:hover{background:#202e24}.symbol-mini{width:34px;flex-shrink:0;font:12px var(--mono);color:var(--copper);text-align:center}.mineral-name{display:block;font-size:23px;line-height:1.3;letter-spacing:-.03em}.mineral-tab small{font-size:12px;line-height:1.7;color:#abb9a3}.mineral-tab>.arrow{margin-left:auto}.mineral-panel{min-width:0}.spec-panel{padding:35px;border:1px solid #6c7a64;min-height:435px}.spec-panel>.label{display:block;margin-bottom:26px;color:var(--copper)}.spec-panel h3{font:42px/1.1 var(--serif);letter-spacing:-.03em;margin-bottom:23px}.spec-panel>p{font-size:16px;color:#c1ccbb}.spec-panel ul{font-size:14px;line-height:1.7;color:#c1ccbb;margin:27px 0;padding-left:18px}.spec-panel .text-link{font-size:14px}.section-note{font-size:13px;line-height:1.75;color:#b5c1aa;margin:30px 0 0;max-width:780px}.paper .section-note{color:#59664f}.mineral-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}.mineral-card{border:1px solid var(--line)}.mineral-card img{width:100%;aspect-ratio:1;object-fit:contain}.mineral-card .card-copy{padding:27px}.mineral-card h3{font-size:30px;margin:12px 0}.mineral-card p{font-size:15px;color:var(--muted)}.mineral-card .label{color:var(--copper)}.mineral-card .text-link{white-space:normal}
/* Process details and shared layouts */
.process-grid{display:grid;grid-template-columns:1fr 1.15fr;gap:11%}.process-grid h2{max-width:430px}.process-grid .lede{font-size:17px;max-width:410px}.process-list{border-top:1px solid var(--line-dark)}.process-list details{border-bottom:1px solid var(--line-dark)}.process-list summary{list-style:none;display:flex;align-items:center;gap:23px;padding:24px 0;cursor:pointer}.process-list summary::-webkit-details-marker{display:none}.step-number{font:12px var(--mono);color:#667259}.process-list h3{font-size:23px;margin:0;letter-spacing:-.025em;line-height:1.3}.plus{font:24px/1 var(--font);margin-left:auto;color:#626f57;flex-shrink:0}.process-list details[open] .plus{transform:rotate(45deg)}.step-body{padding:0 0 24px 43px;font-size:15px;color:#505e46;line-height:1.8}.step-body .label{display:block;margin-top:18px;color:#805831;font-size:11px}.page-hero{padding:145px 0 72px;border-bottom:1px solid var(--line)}.page-hero h1{max-width:1060px;margin-bottom:30px}.page-hero .lede{margin-bottom:0}.breadcrumb{display:flex;flex-wrap:wrap;gap:10px;font:11px/1.8 var(--mono);color:#bdc8b6;margin-bottom:37px}.breadcrumb a{text-decoration:underline;text-underline-offset:4px}.crumb-current{color:#8f9d86}.two-col{display:grid;grid-template-columns:1fr 1fr;gap:10%;align-items:start}.two-col h2{max-width:520px}.copy p{color:#526048}.copy a:not(.button){text-decoration:underline;text-underline-offset:4px}.feature-list{list-style:none;margin:25px 0;padding:0}.feature-list li{border-top:1px solid var(--line-dark);padding-top:15px;margin-top:15px}.service-detail{display:grid;grid-template-columns:1fr 1fr;gap:10%;padding:60px 0;border-top:1px solid var(--line-dark)}.service-detail:last-child{border-bottom:1px solid var(--line-dark)}.service-detail h2{font-size:42px}.service-detail .label{display:block;margin-bottom:20px;color:var(--copper-dark)}.deliverables{padding:0;margin:25px 0 0;list-style:none;display:grid;grid-template-columns:1fr 1fr;gap:18px 24px}.deliverables li{border-top:1px solid var(--line-dark);padding-top:12px;margin:0;font-size:14px;color:#505e46}.note-box{border-left:2px solid #936d45;padding:26px 29px;background:#e6e7da;font-size:15px;line-height:1.8;margin-top:35px}.dark-note{background:#223026;border-color:var(--copper);color:#c9d1c1}.partnership-types{display:grid;grid-template-columns:1fr 1fr;gap:24px}.partnership-type{border:1px solid var(--line-dark);padding:30px}.partnership-type h3{font-size:30px;margin:17px 0}.partnership-type p{font-size:15px;color:#556349}.review-stages{display:grid;grid-template-columns:repeat(4,1fr);gap:30px;margin-top:50px}.review-stage{border-top:1px solid var(--line-dark);padding-top:22px}.review-stage .label{display:block;margin-bottom:25px;color:var(--copper-dark)}.review-stage h3{font-size:25px}.review-stage p{font-size:15px;color:#556349}.mineral-detail-head{display:grid;grid-template-columns:1.2fr 1fr;gap:9%;align-items:center}.mineral-detail-head img{width:100%;max-height:400px;object-fit:contain}.mineral-detail-head h1{font-size:clamp(45px,5vw,70px)}.faq-group{max-width:950px;margin-inline:auto}.faq-group h2{margin-bottom:32px}.faq-group .step-body{padding-left:0}.faq-group summary h3{font-size:21px;line-height:1.45;letter-spacing:-.02em;max-width:94%}
/* Journal archive */
.journal-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:30px}.journal-card{display:flex;flex-direction:column;min-width:0}.journal-art{display:block;aspect-ratio:760/460;background:#ebe6d9;margin-bottom:24px;border:1px solid #d0cbbd}.journal-art img{width:100%;height:100%;object-fit:contain}.journal-card .meta{font:11px/1.6 var(--mono);display:flex;align-items:center;gap:9px;flex-wrap:wrap;color:#60694f;margin-bottom:13px}.divider{width:10px;height:1px;background:#7d866d}.journal-card h3{font-size:25px;line-height:1.25;letter-spacing:-.025em;margin-bottom:15px}.journal-card h3 a:hover{text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:4px}.journal-card .deck{font-size:15px;line-height:1.7;color:#56634b;margin-bottom:22px}.journal-card .read-link{display:flex;align-items:center;justify-content:space-between;padding:15px 0 0;border-top:1px solid var(--line-dark);font-size:13px;margin-top:auto}.read-link:hover{text-decoration:underline;text-underline-offset:4px}.featured-insight{display:grid;grid-template-columns:1.1fr 1fr;gap:65px;align-items:center;padding-bottom:60px}.featured-insight .journal-art{margin:0}.featured-insight h2{font-size:40px}.featured-insight p{font-size:16px;color:#56634b}.filter-row{display:flex;gap:10px;flex-wrap:wrap;padding:24px 0;border-block:1px solid var(--line-dark);margin-bottom:32px}.filter-button{border:1px solid #8e987f;border-radius:2px;background:none;color:var(--ink);padding:10px 14px;font-size:13px;min-height:43px}.filter-button[aria-pressed=true],.filter-button:hover{background:var(--ink);color:var(--paper);border-color:var(--ink)}.search-row{display:flex;align-items:end;justify-content:space-between;gap:30px;margin-bottom:24px}.search-box{position:relative;width:400px;max-width:100%}.search-box label{display:block;font-size:13px;margin-bottom:8px}.search-box input{width:100%;border:1px solid #929c85;background:none;color:var(--ink);padding:13px 44px 13px 14px;border-radius:0;font-size:16px}.search-box svg{position:absolute;right:15px;bottom:16px;width:18px;height:18px}.filter-count{font:12px var(--mono);color:#56654b}.insights-list{row-gap:55px}.empty-state{padding:60px 0;text-align:center}
/* Articles */
.article-hero h1{font-size:clamp(40px,4.6vw,64px);line-height:1.14;max-width:1000px}.article-meta{display:flex;align-items:center;flex-wrap:wrap;gap:23px;font:12px/1.6 var(--mono);color:#bdc8b4;margin-top:32px}.copy-link{margin-left:auto;background:none;border:1px solid #6a7b60;border-radius:2px;color:#d2dbc9;padding:10px 14px;font:12px var(--mono);min-height:42px}.article-layout{display:grid;grid-template-columns:235px minmax(0,760px);gap:8%;align-items:start;justify-content:space-between}.article-aside{position:sticky;top:32px}.article-aside>.label{display:block;margin-bottom:20px;color:#647155}.article-toc{list-style:none;margin:0;padding:20px 0 0;border-top:1px solid var(--line-dark)}.article-toc li{margin:0 0 16px}.article-toc a{font-size:14px;line-height:1.55;color:#536348;display:block}.article-toc a:hover{text-decoration:underline;text-underline-offset:3px}.aside-cta{border-top:1px solid var(--line-dark);margin-top:27px;padding-top:24px}.aside-cta p{font-size:14px;color:#55654a}.aside-cta .text-link{font-size:13px}.article-content{min-width:0;font:18px/1.8 var(--serif);color:#34402f}.article-content p{margin-bottom:24px}.article-content h2{font:400 31px/1.25 var(--font);letter-spacing:-.025em;margin:46px 0 22px;color:var(--ink);scroll-margin-top:32px}.article-content ul{padding-left:22px;margin-bottom:28px}.article-content a:not(.button){color:#7b542e;text-decoration:underline;text-underline-offset:3px}.article-content sup a{font:11px var(--mono);padding:3px;text-decoration:none!important}.article-figure{margin:0 0 35px}.article-figure img{width:100%;height:auto;border:1px solid #d0cbbd}.article-figure figcaption{font:11px/1.5 var(--mono);color:#6b715e;margin-top:9px}.takeaway{border-left:2px solid #916c45;padding:25px 28px;background:#e7e8dc;margin:0 0 37px}.takeaway .label{display:block;font:11px var(--mono);color:#655d46;margin-bottom:12px}.takeaway p{font:17px/1.7 var(--font);color:var(--ink);margin:0}.sources-block{border-top:1px solid var(--line-dark);margin-top:48px;padding-top:28px}.sources-block h2{font:26px var(--font);margin:0 0 20px}.sources-block ol{padding-left:20px}.sources-block li{font:14px/1.7 var(--font);padding-left:4px}.editorial-note{font:13px/1.8 var(--font);color:#5f6b53}.article-end-cta{border-top:1px solid var(--line-dark);padding-top:28px;margin-top:36px}.article-end-cta h3{font:27px/1.25 var(--font)}.article-end-cta p{font:15px/1.7 var(--font)}.article-end-cta .button{background:var(--ink);color:var(--paper);border-color:var(--ink)}.related{border-top:1px solid var(--line-dark)}
/* Resources and calculator */
.resource-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:25px}.resource-card{display:flex;flex-direction:column;border:1px solid var(--line-dark);padding:30px}.resource-card .label{display:block;color:#686d57;margin-bottom:32px}.resource-card h3{font-size:28px}.resource-card p{font-size:15px;color:#56654a}.resource-card .text-link{margin-top:auto}.calculator{display:grid;grid-template-columns:1fr 1fr;border:1px solid var(--line-dark);margin-top:36px}.calc-inputs{padding:38px}.calc-inputs label{display:block;font-size:14px;margin-bottom:8px}.calc-inputs input{padding:13px;border:1px solid #8b987d;border-radius:0;background:none;color:var(--ink);width:100%;font-size:18px;margin-bottom:22px}.input-help{font-size:13px;color:#5a6950;margin-top:-12px;margin-bottom:24px}.calc-error{font-size:14px;color:#854025;min-height:24px;margin:10px 0 0}.calc-output{background:#203325;color:var(--paper);padding:38px;display:flex;flex-direction:column;justify-content:center}.calc-output>.label{color:#c8d2bc;margin-bottom:20px}.calc-result{font-size:67px;line-height:1.1;letter-spacing:-.05em;font-variant-numeric:tabular-nums}.calc-result small{font:13px var(--mono);letter-spacing:0;margin-left:12px}.secondary-result{font-size:25px;margin-top:25px;color:var(--copper)}.calc-formula{font:12px/1.8 var(--mono);margin-top:27px;color:#c3cfb7;overflow-wrap:anywhere}.calc-output .small{font-size:13px;line-height:1.8;color:#c7d1bd;margin:24px 0 0}
/* Enquiries and legal pages */
.contact-layout{display:grid;grid-template-columns:.85fr 1.15fr;gap:10%;align-items:start}.contact-intro h2{font-size:44px}.contact-intro p{font-size:16px;color:#56664a}.contact-info{padding-top:28px;border-top:1px solid var(--line-dark);margin-top:36px}.contact-info .label{display:block;color:#667358;margin-bottom:10px}.contact-info a{display:inline-block;border-bottom:1px solid #879779;margin-bottom:24px;font-size:19px;overflow-wrap:anywhere}.contact-info address{font-style:normal;font-size:15px;line-height:1.8;max-width:300px;color:#56664a}.contact-form{border:1px solid var(--line-dark);padding:34px}.required-note{font:11px var(--mono);color:#647458;margin-bottom:26px}.field-row{display:grid;grid-template-columns:1fr 1fr;gap:22px}.field{margin-bottom:23px}.field label{display:block;font-size:14px;margin-bottom:8px;color:#43543a}.field input,.field select,.field textarea{display:block;width:100%;max-width:100%;background:#f7f5ee;color:var(--ink);border:1px solid #919e82;border-radius:0;padding:12px;min-height:49px;font-size:16px}.field textarea{resize:vertical;min-height:145px}.field input::placeholder,.field textarea::placeholder{color:#69765c}.hint{font-size:12px;line-height:1.7;color:#5e6e51;margin:8px 0 0}.consent-row{display:flex;align-items:start;gap:12px;font-size:13px;line-height:1.8;margin-bottom:25px;color:#465b3b}.consent-row input{width:19px;height:19px;margin:2px 0 0;flex-shrink:0;accent-color:#36512e}.consent-row a{text-decoration:underline;text-underline-offset:3px}.contact-form .button{width:100%}.form-status{font-size:14px;line-height:1.7;margin-top:18px;color:#7a3b24}.form-status:not(:empty){border-left:2px solid #ad6944;padding-left:15px}.form-note{font-size:12px;color:#5d6f50;line-height:1.8;margin:20px 0 0}.honeypot{display:none}.legal-content{max-width:830px}.legal-content h2{font-size:30px;margin-top:38px}.legal-content p,.legal-content li{font-size:16px;color:#4a5d3f;line-height:1.85}.legal-content a{color:#78532f;text-decoration:underline;text-underline-offset:3px}.success-panel{max-width:800px;padding:160px 0 95px}.success-panel h1{font-size:60px}.success-panel .lede{font-size:18px}
/* Footer */
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