/* Digital Gemology: site stylesheet. Built from "Digital Gemology House Style v1".
   Black and white carry everything; red, green and blue appear only where light is shown. */

@font-face{
  font-family:"Geist";
  src:url("/fonts/Geist-Variable.woff2") format("woff2");
  font-weight:100 900;font-style:normal;font-display:swap;
}

:root{
  --dg-black:#000000; --dg-white:#FFFFFF;
  /* Light Return colours: fills, glows, charts only */
  --lr-red:#FF2D20; --lr-green:#12C84E; --lr-blue:#2350FF;

  --r-sheet:32px; --r-panel:24px; --r-inner:14px; --r-chip:10px; --r-pill:999px;
  --blur-thin:12px; --blur-regular:24px; --blur-thick:44px;

  --font:"Geist",-apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif;

  /* Theme: white */
  --bg:#FFFFFF; --fg:#000000; --muted:#5E5E5E; --line:rgba(0,0,0,.12); --surface:#F3F3F3;
  --red-text:#C8170D; --green-text:#0A7F34; --blue-text:#1638C9;
  color-scheme:light;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#000000; --fg:#FFFFFF; --muted:#A3A3A3; --line:rgba(255,255,255,.14); --surface:#121212;
    --red-text:#FF6A5E; --green-text:#4EE07F; --blue-text:#7D97FF;
    color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --bg:#000000; --fg:#FFFFFF; --muted:#A3A3A3; --line:rgba(255,255,255,.14); --surface:#121212;
  --red-text:#FF6A5E; --green-text:#4EE07F; --blue-text:#7D97FF;
  color-scheme:dark;
}
/* The stage is always black: anything that emits light lives here */
.stage{
  --bg:#000000; --fg:#FFFFFF; --muted:#A3A3A3; --line:rgba(255,255,255,.14); --surface:#121212;
  --red-text:#FF6A5E; --green-text:#4EE07F; --blue-text:#7D97FF;
  background:#000;color:#fff;position:relative;overflow:hidden;isolation:isolate;
}

*,*::before,*::after{box-sizing:border-box}
html{background:#000;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--fg);font-family:var(--font);
  font-size:1.0625rem;line-height:1.5;-webkit-font-smoothing:antialiased;
}
img,svg{max-width:100%}
a{color:inherit}
p{margin:0}
:focus-visible{outline:2px solid var(--blue-text);outline-offset:3px;border-radius:6px}
.wrap{max-width:1120px;margin:0 auto;padding:0 24px}

.skip-link{position:absolute;left:12px;top:-60px;z-index:100;background:#fff;color:#000;padding:10px 16px;border-radius:var(--r-pill);font-weight:580;text-decoration:none;transition:top .15s}
.skip-link:focus{top:12px}
.sr-only{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* ---------- Type ---------- */
.t-display{font-size:clamp(3.25rem,10vw,7.5rem);line-height:.92;font-weight:650;letter-spacing:-.045em;margin:0}
.t-title{font-size:clamp(2rem,4.4vw,2.75rem);line-height:1.05;font-weight:620;letter-spacing:-.03em;margin:0}
.t-heading{font-size:1.375rem;line-height:1.2;font-weight:600;letter-spacing:-.015em;margin:0}
.t-caption{font-size:.8125rem;line-height:1.35;color:var(--muted)}
.eyebrow{font-size:.8125rem;font-weight:560;letter-spacing:.02em;color:var(--muted);margin:0 0 14px}
.eyebrow a{text-decoration:none;border-bottom:1px solid var(--line);padding-bottom:2px}
.eyebrow a:hover{color:var(--fg);border-bottom-color:var(--fg)}
.num{font-variant-numeric:tabular-nums}

/* ---------- Glass ---------- */
.glass{
  --blur:var(--blur-regular);
  position:relative;
  background:linear-gradient(180deg,rgba(255,255,255,.16),rgba(255,255,255,.05));
  -webkit-backdrop-filter:blur(var(--blur)) saturate(190%);
  backdrop-filter:blur(var(--blur)) saturate(190%);
  border:1px solid rgba(255,255,255,.18);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.45),inset 0 -1px 0 rgba(255,255,255,.08),inset 0 0 24px rgba(255,255,255,.05),0 24px 60px rgba(0,0,0,.5);
  color:#fff;
}
.glass::before{
  content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  background:radial-gradient(120% 70% at 18% 0%,rgba(255,255,255,.28),transparent 46%);
  mix-blend-mode:screen;
}
.glass--thin{--blur:var(--blur-thin)}
.glass--thick{--blur:var(--blur-thick);background:linear-gradient(180deg,rgba(255,255,255,.22),rgba(255,255,255,.08))}
@supports not ((backdrop-filter:blur(1px)) or (-webkit-backdrop-filter:blur(1px))){
  .glass{background:rgba(28,28,28,.92)}
}

/* ---------- Nav ---------- */
.ambient{position:absolute;inset:-10% -10% auto auto;width:min(900px,120vw);height:auto;filter:blur(80px) saturate(140%);opacity:.55;z-index:-1;pointer-events:none}
.nav{
  margin:16px auto 0;width:calc(100% - 24px);max-width:1072px;border-radius:var(--r-pill);
  display:flex;align-items:center;gap:12px;padding:8px 8px 8px 18px;z-index:2;
}
.brand{display:flex;align-items:center;gap:10px;font-weight:620;letter-spacing:-.01em;text-decoration:none;white-space:nowrap;position:relative}
.brand svg{width:22px;height:22px;flex:none}
.nav-links{display:flex;gap:4px;margin:0 0 0 auto;padding:0;list-style:none;position:relative}
.nav-links a{display:block;text-decoration:none;padding:8px 14px;border-radius:var(--r-pill);font-size:.9375rem;color:rgba(255,255,255,.82)}
.nav-links a:hover,.nav-links a[aria-current="page"]{background:rgba(255,255,255,.1);color:#fff}

.seg{position:relative;display:inline-flex;padding:4px;border-radius:var(--r-pill);background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.12);flex:none}
.seg button{position:relative;z-index:1;border:0;background:none;color:rgba(255,255,255,.75);font:inherit;font-size:.875rem;font-weight:550;padding:7px 14px;border-radius:var(--r-pill);cursor:pointer;min-height:32px}
.seg button[aria-pressed="true"]{color:#000}
.seg .thumb{position:absolute;top:4px;bottom:4px;left:4px;width:0;border-radius:var(--r-pill);background:#fff;box-shadow:0 2px 10px rgba(0,0,0,.35);transition:transform .35s cubic-bezier(.3,1.4,.5,1),width .35s}

/* ---------- Buttons ---------- */
.btn{font:inherit;font-size:.9375rem;font-weight:580;border:0;cursor:pointer;border-radius:var(--r-pill);padding:12px 22px;display:inline-flex;align-items:center;gap:8px;text-decoration:none;line-height:1.2;min-height:44px}
.btn-primary{background:var(--fg);color:var(--bg)}
.btn-primary:hover{opacity:.88}
.btn-secondary{color:#fff;background:rgba(255,255,255,.12);box-shadow:inset 0 0 0 1px rgba(255,255,255,.2)}
.btn-secondary:hover{background:rgba(255,255,255,.2)}
.btn-outline{background:none;color:var(--fg);box-shadow:inset 0 0 0 1px var(--line)}
.btn-outline:hover{box-shadow:inset 0 0 0 1px var(--fg)}
.btn-quiet{background:none;color:var(--fg);padding:12px 6px;text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px}
.row{display:flex;flex-wrap:wrap;gap:12px;align-items:center}

/* ---------- Home hero ---------- */
.hero{padding-bottom:88px}
.hero-grid{display:grid;grid-template-columns:1.05fr 1fr;align-items:center;gap:32px}
.wrap.hero-grid{padding-top:56px}
.hero-copy .t-display{margin-bottom:28px}
.hero-copy .lede{max-width:32ch;color:var(--muted);font-size:1.25rem;line-height:1.4;margin-bottom:32px}
.hero-copy .lede strong{color:#fff;font-weight:560}
.gem-fig{position:relative;margin:0 0 24px;justify-self:center;width:min(460px,100%)}
.gem-fig svg{display:block;width:100%;height:auto}
.legend{position:absolute;left:50%;bottom:-18px;transform:translateX(-50%);border-radius:var(--r-pill);display:flex;gap:16px;padding:10px 18px;white-space:nowrap;font-size:.8125rem}
.dot{display:inline-block;width:9px;height:9px;border-radius:50%;margin-right:7px;vertical-align:1px}
.d-r{background:var(--lr-red);box-shadow:0 0 10px var(--lr-red)}
.d-g{background:var(--lr-green);box-shadow:0 0 10px var(--lr-green)}
.d-b{background:var(--lr-blue);box-shadow:0 0 10px var(--lr-blue)}
.fig-note{text-align:center;margin-top:34px;color:#A3A3A3}
.f{animation:lit .9s ease-out both}
@keyframes lit{from{opacity:0}to{opacity:1}}

/* ---------- Sections ---------- */
section.block{padding:96px 0;border-top:1px solid var(--line)}
section.block.first{border-top:0}
.sec-head{display:grid;grid-template-columns:1fr 1.3fr;gap:32px;margin-bottom:48px;align-items:end}
.sec-head p{color:var(--muted);max-width:54ch}
.principles{display:grid;grid-template-columns:repeat(3,1fr);gap:40px}
.principles h3{margin-bottom:10px}
.principles p{color:var(--muted)}
.rule{height:3px;border-radius:2px;width:40px;margin-bottom:18px;background:var(--fg)}

.stage-panel{border-radius:var(--r-sheet);padding:40px 32px}
.stage-panel .ambient{inset:auto;right:-160px;bottom:-220px;width:720px;opacity:.45}
.products{display:grid;grid-template-columns:1fr 1fr;gap:20px;position:relative}
.product{border-radius:var(--r-panel);overflow:hidden;display:flex;flex-direction:column}
.product .img{aspect-ratio:16/9;display:grid;place-items:center;background:radial-gradient(60% 60% at 50% 45%,rgba(255,255,255,.07),transparent 70%)}
.product .img svg{width:44%;height:auto}
.product .body{padding:22px 24px 26px;display:flex;flex-direction:column;gap:12px;flex:1}
.product .body p{color:rgba(255,255,255,.74);font-size:.9375rem}
.product ul{margin:0;padding:0;list-style:none;display:grid;gap:6px;font-size:.9375rem;color:rgba(255,255,255,.86)}
.product li{display:grid;grid-template-columns:62px 1fr;gap:10px}
.product li b{font-weight:600;font-variant-numeric:tabular-nums}
.product .foot{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;margin-top:auto;padding-top:8px}
.tags{display:flex;gap:6px;flex-wrap:wrap}
.tag{font-size:.75rem;padding:4px 10px;border-radius:var(--r-chip);background:rgba(255,255,255,.1);color:rgba(255,255,255,.85)}
.status{font-size:.8125rem;color:#A3A3A3}

.collections{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.coll{border:1px solid var(--line);border-radius:var(--r-panel);padding:24px;background:var(--surface)}
.coll-wide{grid-column:1/-1}
.coll h3{margin-bottom:6px}
.coll p{color:var(--muted);font-size:.9375rem;margin-bottom:16px}
.chips{display:flex;flex-wrap:wrap;gap:6px;margin:0;padding:0;list-style:none}
.chips li{font-size:.8125rem;padding:5px 11px;border-radius:var(--r-chip);border:1px solid var(--line);background:var(--bg)}

.course{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
.syllabus{margin:0;padding:0;list-style:none;border-top:1px solid var(--line);counter-reset:mod}
.syllabus li{display:grid;grid-template-columns:44px 1fr;gap:12px;padding:18px 0;border-bottom:1px solid var(--line);counter-increment:mod}
.syllabus li::before{content:counter(mod,decimal-leading-zero);font-variant-numeric:tabular-nums;color:var(--muted);font-size:.9375rem;padding-top:2px}
.syllabus b{display:block;font-weight:600;margin-bottom:2px}
.syllabus span{color:var(--muted);font-size:.9375rem}

.tools{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.tool{border:1px solid var(--line);border-radius:var(--r-panel);padding:22px;display:flex;flex-direction:column;gap:8px}
.tool p{color:var(--muted);font-size:.9375rem}

/* ---------- Document pages (legal) ---------- */
.wrap.page-hero{padding-top:56px;padding-bottom:64px}
.page-hero .t-title{max-width:20ch}
.page-hero .ver{margin-top:14px;color:#A3A3A3;font-size:.9375rem}
.page-hero .eyebrow{color:#A3A3A3}
.doc{max-width:780px;margin:0 auto;padding:56px 24px 96px}
.doc .lede{font-size:1.1875rem;line-height:1.5;color:var(--muted);margin-bottom:8px}
.doc h2{font-size:1.5rem;line-height:1.2;font-weight:620;letter-spacing:-.02em;margin:56px 0 14px;padding-top:28px;border-top:1px solid var(--line)}
.doc h2.part{font-size:1.75rem;margin-top:72px}
.doc h3{font-size:1.0625rem;font-weight:620;letter-spacing:-.01em;margin:28px 0 8px}
.doc p{margin:12px 0}
.doc ul,.doc ol{padding-left:22px;margin:12px 0}
.doc li{margin:6px 0}
.doc li::marker{color:var(--muted)}
.doc a{text-underline-offset:3px;text-decoration-thickness:1px}
.doc code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.875em;background:var(--surface);border:1px solid var(--line);border-radius:6px;padding:1px 5px}
.keys{margin:16px 0;border-top:1px solid var(--line)}
.keys div{display:grid;grid-template-columns:210px 1fr;gap:12px;padding:10px 0;border-bottom:1px solid var(--line);font-size:.9844rem}
.keys b{font-weight:500;color:var(--muted)}
.callout{background:var(--surface);border:1px solid var(--line);border-left:3px solid var(--fg);border-radius:var(--r-inner);padding:18px 20px;margin:20px 0}
.callout p{margin:0}
.callout p+p{margin-top:10px}
.doc dl.defs{margin:12px 0;display:grid;grid-template-columns:200px 1fr;gap:8px 16px}
.doc dl.defs dt{font-weight:600}
.doc dl.defs dd{margin:0;color:var(--muted)}
.tw{overflow-x:auto;margin:16px 0;border:1px solid var(--line);border-radius:var(--r-inner)}
.tw table{border-collapse:collapse;width:100%;min-width:560px;font-size:.9375rem}
.tw th,.tw td{text-align:left;vertical-align:top;padding:12px 14px;border-bottom:1px solid var(--line)}
.tw th{font-weight:600;background:var(--surface)}
.tw tr:last-child td{border-bottom:0}
.toc{margin:24px 0 0;padding:18px 20px;border:1px solid var(--line);border-radius:var(--r-inner)}
.toc p{font-weight:600;margin:0 0 8px}
.toc ol{margin:0;padding-left:22px;columns:2;column-gap:32px}
.toc li{margin:4px 0;break-inside:avoid}

.hub{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(300px,100%),1fr));gap:14px;margin:24px 0 8px;padding:0;list-style:none}
.hub li{margin:0;display:flex}
.card{display:flex;flex-direction:column;width:100%;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-panel);padding:22px 24px;transition:border-color .2s}
.card:hover{border-color:var(--fg)}
.doc .card h2{font-size:1.1875rem;margin:0 0 6px;padding:0;border:0}
.card h2 a{text-decoration:none}
.card p{margin:0 0 14px;color:var(--muted);font-size:.9375rem;flex:1}
.card-links{display:flex;flex-wrap:wrap;gap:6px 18px;margin:0;padding:0;list-style:none}
.doc .card-links li{margin:0;font-size:.875rem;font-weight:560}
.doc .hub,.doc .also,.doc .card-links{padding-left:0}
.also{display:flex;flex-wrap:wrap;gap:8px 26px;margin:12px 0 0;padding:0;list-style:none}

/* ---------- Footer ---------- */
.site-footer{padding:64px 0 40px;border-top:1px solid rgba(255,255,255,.14)}
.site-footer .ambient{inset:auto auto -300px -200px;width:700px;opacity:.35}
.foot-top{display:flex;justify-content:space-between;gap:32px;flex-wrap:wrap;padding-bottom:32px;border-bottom:1px solid rgba(255,255,255,.14)}
.foot-brand p{color:#A3A3A3;font-size:.9375rem;margin-top:10px;max-width:34ch}
.foot-cols{display:flex;gap:56px;flex-wrap:wrap}
.foot-cols h2{font-size:.8125rem;font-weight:600;color:#A3A3A3;margin:0 0 12px;letter-spacing:.02em}
.foot-cols ul{margin:0;padding:0;list-style:none;display:grid;gap:4px}
.foot-cols a{text-decoration:none;color:rgba(255,255,255,.86);font-size:.9375rem;display:inline-block;padding:3px 0}
.foot-cols a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.foot-legal{padding-top:24px;color:#A3A3A3;font-size:.8125rem;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}

/* ---------- Responsive ---------- */
@media (max-width:860px){
  .hero-grid,.sec-head,.course{grid-template-columns:1fr}
  .hero-grid{gap:40px}
  .wrap.hero-grid{padding-top:36px}
  .wrap.page-hero{padding-top:40px;padding-bottom:48px}
  .principles,.products,.collections{grid-template-columns:1fr}
  .tools{grid-template-columns:1fr 1fr}
  section.block{padding:72px 0}
  .stage-panel{padding:24px 16px;border-radius:26px}
  .nav{flex-wrap:wrap;border-radius:26px;padding:10px 10px 10px 16px}
  .nav .seg{margin-left:auto}
  .nav-links{order:3;width:100%;margin:0;flex-wrap:wrap;padding-top:6px;border-top:1px solid rgba(255,255,255,.12)}
  .nav-links a{padding:8px 12px;font-size:.875rem}
  .toc ol{columns:1}
}
@media (max-width:560px){
  .wrap{padding:0 16px}
  .doc{padding:40px 16px 72px}
  .keys div{grid-template-columns:1fr;gap:2px}
  .doc dl.defs{grid-template-columns:1fr;gap:2px}
  .doc dl.defs dd{margin-bottom:10px}
  .tools{grid-template-columns:1fr}
  .foot-cols{gap:32px}
}
@media (max-width:420px){
  .legend{gap:10px;padding:9px 12px;font-size:.6875rem}
  .dot{margin-right:5px}
  .seg button{padding:7px 11px}
}
@media (prefers-reduced-motion:reduce){
  .f{animation:none}
  .seg .thumb{transition:none}
  .skip-link{transition:none}
}

/* ---------- Catalogue: cut and gemstone pages ---------- */
.doc.doc-wide{max-width:1000px}
.doc .product ul,.doc .chips,.doc .cgrid,.doc .sgrid{padding-left:0}
.hero-sub{margin-top:14px;color:#A3A3A3;font-size:.9375rem;font-variant-numeric:tabular-nums}
.hero-lede{margin:18px 0 26px;color:rgba(255,255,255,.82);font-size:1.0625rem;max-width:52ch}
.cut-hero{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center}
.cut-visual{justify-self:center;width:min(380px,100%)}
.cut-visual > img,.cut-visual > svg{display:block;width:100%;height:auto;border-radius:var(--r-panel)}
.cut-visual svg{color:rgba(255,255,255,.7)}
.views{display:grid;grid-template-columns:1fr 1.3fr;gap:20px;margin:20px 0}
.views figure{margin:0;border:1px solid var(--line);border-radius:var(--r-panel);padding:18px;display:flex;flex-direction:column;gap:10px}
.views svg{width:100%;max-width:420px;max-height:360px;height:auto;margin:0 auto;display:block;color:var(--fg);opacity:.85}
.views figcaption,.lr-fig figcaption{font-size:.8125rem;color:var(--muted)}
.lr-fig{margin:20px 0 0;border-radius:var(--r-panel);padding:18px;display:grid;grid-template-columns:minmax(0,340px) 1fr;gap:20px;align-items:center}
.lr-fig img{width:100%;height:auto;border-radius:var(--r-inner);display:block}
.lr-fig figcaption{color:#A3A3A3}
.tw td.n{font-variant-numeric:tabular-nums;white-space:nowrap}
.doc details.faq{border-bottom:1px solid var(--line);padding:4px 0}
.doc details.faq summary{cursor:pointer;font-weight:600;padding:12px 0;list-style-position:outside}
.doc details.faq p{margin:0 0 14px;color:var(--muted)}
.linkchips a{text-decoration:none;display:inline-block}
.linkchips li:hover{border-color:var(--fg)}
.buy{margin-top:56px}
.buy .stage-panel{margin:16px 0 14px}
.btn-soon{background:rgba(255,255,255,.12);color:rgba(255,255,255,.7);box-shadow:inset 0 0 0 1px rgba(255,255,255,.2);cursor:default}
.buy .product .body{padding-top:26px}
.cgrid{list-style:none;margin:20px 0 0;display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:14px}
.doc .cgrid li,.doc .sgrid li{margin:0}
.ccard{display:flex;flex-direction:column;text-decoration:none;border:1px solid var(--line);border-radius:var(--r-panel);overflow:hidden;height:100%;transition:border-color .2s}
.ccard:hover{border-color:var(--fg)}
.ccard-img{aspect-ratio:1;display:grid;place-items:center}
.ccard-img img{width:100%;height:100%;object-fit:cover;display:block}
.ccard-img svg{width:70%;height:auto;color:rgba(255,255,255,.7)}
.ccard-body{padding:12px 14px 14px;display:flex;flex-direction:column;gap:2px}
.ccard-body b{font-weight:600}
.ccard-body span{font-size:.8125rem;color:var(--muted)}
.sgrid{list-style:none;margin:24px 0 0;display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:14px}
.scard{display:flex;flex-direction:column;gap:4px;text-decoration:none;border:1px solid var(--line);border-radius:var(--r-panel);padding:20px;background:var(--surface);height:100%}
.scard:hover{border-color:var(--fg)}
.scard b{font-size:1.1875rem;font-weight:620;margin-bottom:6px}
.scard span{font-size:.875rem;color:var(--muted);font-variant-numeric:tabular-nums}
@media (max-width:860px){
  .cut-hero{grid-template-columns:1fr}
  .cut-visual{width:min(300px,100%);justify-self:start}
  .views,.lr-fig{grid-template-columns:1fr}
}

/* ---------- Cut preview toggle ---------- */
.viewer{display:flex;flex-direction:column;align-items:center;gap:12px;width:100%}
.view-seg button:disabled{opacity:.35;cursor:not-allowed}
.view-box{width:100%;aspect-ratio:1;border-radius:var(--r-panel);border:1px solid rgba(255,255,255,.14);position:relative}
.view-box canvas{position:absolute;inset:0;width:100%;height:100%;display:block;touch-action:pan-y;cursor:grab}
.view-box canvas:active{cursor:grabbing}
.view-box canvas[hidden],.view-box img[hidden]{display:none}
.view-box .view-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;border-radius:0}
.view-hint{font-size:.75rem;color:#A3A3A3;margin:0}
.cut-hero .cut-visual{width:min(420px,100%)}
.lr-controls{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:8px 14px;font-size:.8125rem;color:rgba(255,255,255,.82)}
.lr-controls[hidden]{display:none}
.lr-controls select{font:inherit;color:#fff;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);border-radius:var(--r-pill);padding:6px 12px;margin-left:6px;min-height:32px}
.lr-controls select option{color:#000}
.lr-reset{font:inherit;color:#fff;background:none;border:1px solid rgba(255,255,255,.2);border-radius:var(--r-pill);padding:6px 12px;cursor:pointer;min-height:32px}
.lr-reset:hover{background:rgba(255,255,255,.1)}
.lr-legend{display:inline-flex;align-items:center;gap:4px 6px;flex-wrap:wrap;color:#A3A3A3}
.lr-legend .dot{margin:0 2px 0 6px}
.d-k{background:#111;box-shadow:inset 0 0 0 1px rgba(255,255,255,.35)}
.view-box canvas.view-light{cursor:grab}
.gem-fig .hero-stone{display:block;width:100%;height:auto;filter:drop-shadow(0 30px 60px rgba(0,0,0,.55))}
@media (prefers-reduced-motion:no-preference){.gem-fig .hero-stone{animation:lit 1.2s ease-out both}}
.gem-fig{display:flex;flex-direction:column;align-items:center}
.gem-fig .legend{position:relative;left:auto;bottom:auto;transform:none;margin-top:-6px}
.gem-fig .fig-note{margin-top:12px;text-align:center}
@media (max-width:420px){.gem-fig .legend{flex-wrap:wrap;justify-content:center;white-space:normal}}

/* ---------- Cuts overview: view toggle ---------- */
.cuts-toolbar{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;margin:0 0 8px}
.cuts-toolbar .seg{background:#111;border-color:rgba(255,255,255,.14)}
.cuts-toolbar .t-caption{margin:0}
.ccard-img{background:#000}
.ccard-img .v{display:none;width:100%;height:100%;object-fit:contain;padding:10%}
.cuts-views[data-view="3d"] .v-3d,.cuts-views[data-view="light"] .v-light,.cuts-views[data-view="mesh"] .v-mesh{display:block}
.cuts-views[data-view="light"] .v-light,.cuts-views[data-view="mesh"] .v-mesh{padding:6%}

/* ---------- Gemstones: T73 vs BL-Anteros demonstration ---------- */
.demo-seg{margin:18px 0 16px;background:#111;border-color:rgba(255,255,255,.14)}
.demo-grid{display:grid;grid-template-columns:auto 1fr 1fr;gap:12px 14px;align-items:start}
.dg-colhead{font-weight:620;font-size:1.0625rem;padding:0 4px}
.dg-colhead span{display:block;font-weight:400;font-size:.8125rem;color:var(--muted)}
.dg-rowhead{font-weight:620;padding-top:12px;writing-mode:horizontal-tb}
.dg-rowhead a{text-decoration:none;border-bottom:1px solid var(--line)}
.dg-cell{margin:0}
.dg-stage{border-radius:var(--r-panel);padding:10px;aspect-ratio:1;display:grid;place-items:center}
.dg-stage img{width:100%;height:auto;display:block}
.dg-stage .dv{display:none;width:100%}
.demo-views[data-view="light"] .dg-stage .dv-light{display:block}
.demo-views[data-view="ha"] .dg-stage .dv-ha{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.dv-ha span{display:flex;flex-direction:column;align-items:center;gap:6px}
.dv-ha i{font-style:normal;font-size:.75rem;color:#A3A3A3}
.dg-cell figcaption{font-size:.875rem;color:var(--muted);margin-top:8px}
.dg-cell figcaption b{color:var(--fg);font-weight:600}
.demo-legend{margin-top:16px}
.demo-legend .dl{display:none;font-size:.875rem;color:var(--muted);margin:0}
.demo-views[data-view="light"]~.demo-legend .dl-light,.demo-views[data-view="ha"]~.demo-legend .dl-ha{display:block}
.ha-key{display:inline-block;width:11px;height:11px;border-radius:3px;margin:0 5px 0 8px;vertical-align:-1px;border:1px solid var(--line)}
.ha-w{background:#f6f6f6}.ha-r{background:#cd1c24}.ha-k{background:#0c0c0c}
@media (max-width:640px){
  .demo-grid{grid-template-columns:1fr 1fr}
  .dg-corner{display:none}
  .dg-rowhead{grid-column:1/-1;padding-top:18px}
  .demo-views[data-view="ha"] .dg-stage .dv-ha{grid-template-columns:1fr}
}
.ccard-img{position:relative}
.ccard-note{display:none;position:absolute;left:8px;bottom:8px;font-size:.6875rem;padding:3px 8px;border-radius:var(--r-chip);background:rgba(0,0,0,.72);color:#fff;box-shadow:inset 0 0 0 1px rgba(255,255,255,.2)}
.cuts-views[data-view="light"] .ccard-note{display:block}
/* Homepage hero: live BL-Vitruvio model */
.viewer-hero{width:min(480px,100%)}
.viewer-hero .view-box{border:0;border-radius:0;background:transparent;aspect-ratio:1}
.viewer-hero canvas{cursor:grab;touch-action:pan-y}
.hero-cap{font-size:.8125rem;color:#A3A3A3;text-align:center;margin-top:4px}
.hero-cap a{color:#fff;text-decoration:none;border-bottom:1px solid rgba(255,255,255,.3)}