:root{--paper:#f1f1ee;--ink:#19191b;--line:#d1d1cb;--muted:#666660;--panel:#e8e8e3;--space:clamp(20px,4vw,72px)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.55 Arial,Helvetica,sans-serif}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit;color:inherit}button,a,summary{touch-action:manipulation}button{cursor:pointer}button:disabled{opacity:.4;cursor:default}img{display:block;max-width:100%}h1,h2,h3,p,figure{margin:0}h1,h2,h3{font-weight:400;line-height:1.05}em{font-family:Georgia,serif;font-weight:400}button{border:0;background:none}a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible,select:focus-visible{outline:2px solid currentColor;outline-offset:4px}#content:focus{outline:0}.skip{position:fixed;top:-80px;left:20px;padding:12px;background:white;z-index:99}.skip:focus{top:10px}.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}[hidden]{display:none!important}
.header{min-height:86px;display:flex;align-items:center;gap:25px;padding:15px var(--space);border-bottom:1px solid var(--line)}.brand{font-size:27px;letter-spacing:-1.5px;font-weight:900;line-height:1}.brand small{display:block;font-size:12px;letter-spacing:5px;line-height:1.8;font-weight:400}.header nav{display:flex;gap:28px;margin:auto;font-size:14px}.header nav a{padding:7px 0;border-bottom:1px solid transparent}.header nav a:hover,.header nav a.active{border-color:currentColor}.telegram{font-size:14px;white-space:nowrap}.menu{display:none;font-size:25px;min-width:44px;min-height:44px}
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.hero{display:grid;grid-template-columns:1.1fr 1fr;margin:28px var(--space) 0;border-block:1px solid var(--line)}.hero-photo{position:relative;min-height:610px;overflow:hidden;background:#222}.hero-photo>img{position:absolute;width:100%;height:100%;object-fit:cover;object-position:48%}.hero-photo figcaption{position:absolute;bottom:28px;left:28px;color:white;font:italic clamp(32px,4vw,62px)/1.05 Georgia,serif;text-shadow:0 2px 25px #0008}.hero-choice{padding:30px 38px;display:flex;flex-direction:column}.hero-choice h1{font-size:clamp(32px,3.2vw,51px);letter-spacing:-.045em;margin-top:22px}.hero-choice .visual{width:min(100%,290px);margin:auto}.hero-choice .button{margin-top:18px}.hero-choice .note{margin:7px 0}.hero-name{display:flex;justify-content:space-between;gap:15px;font-size:15px}.wordmark{font-weight:900;font-size:clamp(65px,22vw,440px);letter-spacing:-.075em;line-height:1;overflow:hidden}.masthead{padding:25px var(--space);border-bottom:1px solid var(--line)}
.visual{position:relative;aspect-ratio:1;background:#ededeb;overflow:hidden}.sprite{position:absolute;inset:0;overflow:hidden}.sprite img{position:absolute;width:300%;height:200%;max-width:none;object-fit:fill;mix-blend-mode:multiply}.photo{height:100%;width:100%;object-fit:contain}.swatches{display:flex;gap:7px;flex-wrap:wrap;margin-top:14px}.swatch{display:flex;align-items:center;justify-content:center;width:36px;height:36px;padding:5px;border:1px solid transparent;border-radius:50%}.swatch i,.stone-choice i{width:23px;height:23px;display:block;background:var(--color);border-radius:50%;box-shadow:inset 0 0 0 1px #0002}.swatch[data-stone=opal] i,.stone-choice[data-stone=opal] i{background:conic-gradient(#c9dcda,#ecd0c1,#bbcfe3,#d5c7da,#c9dcda)}.swatch[aria-pressed=true],.swatch:hover{border-color:var(--ink)}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:40px;margin-bottom:35px}.section-head p{max-width:340px;color:var(--muted);font-size:15px}.filters{display:flex;gap:8px;flex-wrap:wrap;border-block:1px solid var(--line);padding:15px 0;margin-bottom:30px}.chip{border:1px solid transparent;border-radius:40px;padding:9px 17px;font-size:14px}.chip[aria-pressed=true]{background:var(--ink);color:var(--paper)}.chip:hover{border-color:var(--ink)}.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:40px 22px}.card{min-width:0}.card:nth-child(3n+2) .visual{border-radius:46% 46% 0 0}.card .visual{margin-bottom:16px}.card h3{font-size:31px;letter-spacing:-.04em}.card-meta{display:flex;justify-content:space-between;gap:10px;font-size:13px;margin-top:8px;color:var(--muted)}.card .swatches{gap:4px}.card .swatch{width:31px;height:31px}.card .swatch i{width:19px;height:19px}.catalogue-note{max-width:850px;margin-top:30px}.manifesto{display:grid;grid-template-columns:1fr 3fr;gap:40px;border-top:1px solid var(--line)}.manifesto p:last-child{font-size:clamp(25px,3.7vw,57px);letter-spacing:-.04em;line-height:1.2}.atlas-banner{background:var(--ink);color:var(--paper);display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:50px}.atlas-banner h2{font-size:clamp(48px,6.5vw,100px);letter-spacing:-.05em;margin:25px 0}.atlas-banner p{color:#c0c0ba;max-width:450px;margin-bottom:30px}.atlas-banner .gem-image{max-height:430px;border-radius:48%}.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:35px}.steps article{padding-top:25px;border-top:1px solid var(--line)}.steps em{font-size:24px}.steps h3{font-size:28px;margin:35px 0 15px}.steps p{color:var(--muted);font-size:15px}
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.search{margin-top:35px}.search input{font-size:23px;padding:19px 0;border:0;border-block:1px solid var(--ink)}.atlas-filters{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:20px 0}.atlas-filters label{font-size:12px;display:block;margin-bottom:8px;color:var(--muted)}.result-row{margin:20px 0;display:flex;justify-content:space-between;gap:15px;font-size:13px;color:var(--muted)}.gems{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:35px 22px}.gem-tile{min-width:0}.gem-tile .gem-image{aspect-ratio:1;background:var(--panel);padding:22px;margin-bottom:14px}.gem-image{width:100%;height:100%;object-fit:contain}.gem-tile h2{font-size:25px;letter-spacing:-.035em}.gem-tile p{font-size:12px;color:var(--muted);margin-top:8px}.load-more{display:block;margin:40px auto 0}.empty{grid-column:1/-1;padding:70px 20px;text-align:center;border:1px solid var(--line)}.empty h2{font-size:35px;margin-bottom:15px}.stone-layout{display:grid;grid-template-columns:1fr 1.05fr;gap:65px;align-items:start}.stone-portrait{aspect-ratio:1;background:var(--panel);padding:25px}.credits{font-size:12px;color:var(--muted);margin-top:15px;overflow-wrap:anywhere}.credits a{text-decoration:underline}.stone-heading h1{font-size:clamp(43px,6vw,88px);letter-spacing:-.05em;margin:22px 0}.stone-heading>p{font-size:20px;line-height:1.5}.facts{display:grid;grid-template-columns:1fr 1fr;gap:25px 20px;padding:25px 0;border-block:1px solid var(--line);margin-top:25px}.facts dt{font-size:12px;color:var(--muted);margin-bottom:8px}.facts dd{margin:0}.stone-origin{margin-top:20px;font-size:15px!important}.stories{display:grid;grid-template-columns:1fr 1fr;gap:45px 65px;border-top:1px solid var(--line);margin-top:50px;padding-top:40px}.stories h2{font-size:31px;letter-spacing:-.035em;margin-bottom:18px}.stories p{color:var(--muted);line-height:1.7}.tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}.tag{font-size:13px;padding:7px 12px;border:1px solid var(--line);border-radius:25px}.callout{display:flex;justify-content:space-between;align-items:center;gap:30px;margin-top:45px;border-top:1px solid var(--line);padding-top:30px}.callout h2{font-size:32px;letter-spacing:-.04em}.callout p{margin-top:12px}
.definitions{display:grid;grid-template-columns:repeat(3,1fr);border:1px solid var(--line);margin:40px 0}.definitions article{padding:30px}.definitions article+article{border-left:1px solid var(--line)}.definitions h2{font-size:28px;margin-bottom:17px}.definitions p{font-size:15px;color:var(--muted)}.treatments summary{font-size:clamp(23px,3vw,38px);letter-spacing:-.04em;padding:27px 0}.treatments .detail{max-width:850px}.treatments .detail p{margin-bottom:12px}.about{display:grid;grid-template-columns:1fr 1fr;gap:55px;align-items:center}.about>img{width:100%;height:630px;object-fit:cover;object-position:43%}.about p{color:var(--muted);margin:27px 0;font-size:17px}
footer{padding:50px var(--space) 20px;background:var(--ink);color:var(--paper)}.footer-top{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:50px}.footer-top p{font-size:clamp(25px,3.4vw,49px);line-height:1.2;letter-spacing:-.03em}.footer-top a{font-size:14px;border-bottom:1px solid #92928d;padding-bottom:10px}.footer-bottom{display:flex;justify-content:space-between;border-top:1px solid #53534c;padding-top:20px;font-size:12px;color:#c0c0ba}dialog{width:min(600px,calc(100% - 32px));max-height:90dvh;overflow:auto;background:var(--paper);color:var(--ink);border:0;padding:30px}dialog::backdrop{background:#0009;backdrop-filter:blur(4px)}.dialog-head{display:flex;justify-content:space-between;gap:20px;margin-bottom:25px}.dialog-head h2{font-size:35px;letter-spacing:-.04em}.close{font-size:30px;width:42px;height:42px;flex-shrink:0}.dialog-actions{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:20px 0}dialog textarea{min-height:240px;background:var(--panel);font-size:14px;line-height:1.6}#toast{position:fixed;bottom:20px;left:50%;transform:translateX(-50%);background:var(--ink);color:var(--paper);font-size:14px;padding:14px 22px;z-index:100;display:none;max-width:calc(100% - 30px)}#toast.show{display:block}
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@media(max-width:760px){.header{flex-wrap:wrap;gap:15px}.menu{display:block;margin-left:auto}.header nav{display:none;order:4;width:100%;margin:0;flex-direction:column;gap:0}.header nav.open{display:flex}.header nav a{padding:13px 0}.hero{grid-template-columns:1fr}.hero-photo{min-height:0;aspect-ratio:1.3}.hero-choice{padding:30px 0;display:grid;grid-template-columns:1fr 1fr;gap:20px}.hero-choice>.label{grid-column:1/-1}.hero-choice h1{font-size:32px;margin:0}.hero-choice>.visual{grid-column:2;grid-row:2/4;width:100%}.hero-bottom{grid-column:1;grid-row:3}.hero-name{flex-direction:column;gap:4px}.hero-choice .swatches{gap:1px}.hero-choice .swatch{width:28px;height:30px;padding:3px}.hero-choice .swatch i{width:19px;height:19px}.hero-choice .button{font-size:13px;padding-inline:12px;gap:8px}.section-head{flex-direction:column;align-items:start;gap:25px}.cards{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px 16px}.card h3{font-size:26px}.card:nth-child(3n+2) .visual{border-radius:0}.card:nth-child(even) .visual{border-radius:45% 45% 0 0}.card .swatches{gap:0}.card .swatch{width:25px;height:28px;padding:3px}.card .swatch i{width:17px;height:17px}.manifesto{grid-template-columns:1fr;gap:25px}.atlas-banner{gap:25px}.atlas-banner h2{font-size:52px}.model-layout,.stone-layout{grid-template-columns:1fr;gap:30px}.model-image{position:static}.model-image .visual{max-width:550px;margin:auto}.model-info h1{font-size:78px}.stories{gap:35px}.about{grid-template-columns:1fr}.about>img{height:auto;max-height:550px}.definitions article{padding:22px}.definitions h2{font-size:23px}.steps{gap:25px}}
@media(max-width:500px){.wrap{padding-block:40px}.telegram{font-size:12px}.hero-photo{aspect-ratio:1.1}.hero-choice{gap:13px}.hero-choice h1{font-size:27px}.hero-choice .note{font-size:12px}.hero-name{font-size:13px}.hero-choice .button{font-size:12px}.title{font-size:48px}.cards{gap:30px 12px}.card-meta{flex-direction:column;gap:4px}.chip{padding:9px 13px;font-size:13px}.atlas-banner{grid-template-columns:1fr}.atlas-banner .gem-image{max-height:300px}.steps{grid-template-columns:1fr}.steps h3{margin-top:20px}.fields{grid-template-columns:1fr}.atlas-filters{grid-template-columns:1fr;gap:12px}.atlas-filters>div{display:grid;grid-template-columns:90px 1fr;gap:12px;align-items:center}.atlas-filters label{margin:0}.search input{font-size:18px}.gems{grid-template-columns:repeat(2,minmax(0,1fr));gap:30px 14px}.gem-tile h2{font-size:23px}.gem-tile .gem-image{padding:16px}.stone-heading h1{font-size:48px}.stories{grid-template-columns:1fr}.callout{flex-direction:column;align-items:start}.callout .button{width:100%}.definitions{grid-template-columns:1fr}.definitions article+article{border-left:0;border-top:1px solid var(--line)}.definitions h2{font-size:28px}.footer-top{flex-direction:column;align-items:start}.footer-bottom{gap:15px}.dialog-actions{grid-template-columns:1fr}dialog{padding:23px}.dialog-head h2{font-size:30px}.wordmark{font-size:22vw}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}

/* Bilingual brand: equivalent placement, colour and typography. */
.brand{display:flex;flex-direction:column;gap:9px;flex-shrink:0;font-size:24px;letter-spacing:-1px}.brand .brand-language{display:block}.brand .brand-language small{font-size:9px;letter-spacing:.35px;line-height:1.5;font-weight:500}.header{min-height:110px}.legal-header .brand{margin-right:12px}
@media(max-width:760px){.brand{font-size:21px;gap:7px}.brand .brand-language small{font-size:8px;letter-spacing:.2px}.header{gap:14px;min-height:100px}}