:root{
  --ink:#0D0C0B; --ink-2:#14120F; --ink-3:#1C1915;
  --ivory:#EEE7DA; --ivory-2:#F4EFE6; --dim:#A39B8E; --dim-2:#938A7B;
  --mute-l:#6E6354; --gold-ink:#7E5A26;
  --gold:#C9A367; --gold-hi:#E6C98F;
  --line:rgba(238,231,218,.13); --line-2:rgba(238,231,218,.26);
  --serif:"Cormorant Garamond","Times New Roman",serif;
  --sans:"Manrope",system-ui,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,monospace;
  --pad:clamp(20px,4.2vw,64px);
  --ease:cubic-bezier(.2,.7,.1,1);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
.reduced,.is-shot{scroll-behavior:auto}
body{margin:0;background:var(--ink);color:var(--ivory);font:400 16px/1.6 var(--sans);-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{display:block;max-width:100%}
a{color:inherit}
em{font-style:italic;font-weight:300;color:var(--gold-hi)}
.mono{font-family:var(--mono);font-size:11.5px;letter-spacing:.08em;text-transform:uppercase}
.hint{font-size:12.5px;color:var(--dim);margin:10px 0 0;line-height:1.5}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;height:52px;padding:0 26px;border-radius:999px;font:600 14px/1 var(--sans);letter-spacing:.02em;text-decoration:none;cursor:pointer;border:1px solid transparent;transition:background .3s var(--ease),color .3s,border-color .3s,transform .3s var(--ease)}
.btn:active{transform:scale(.97)}
.btn-gold{background:linear-gradient(180deg,#E3C58A,#C29A5B);color:#16110A;box-shadow:inset 0 1px 0 rgba(255,255,255,.4)}
.btn-gold:hover{background:linear-gradient(180deg,#EED3A0,#CDA567)}
.btn-line{background:transparent;color:var(--ivory);border-color:var(--line-2)}
.btn-line:hover{border-color:var(--gold);color:var(--gold-hi)}
.btn-sm{height:38px;padding:0 18px;font-size:13px}
.btn-lg{height:60px;padding:0 32px;font-size:15px}
:focus-visible{outline:1px solid var(--gold);outline-offset:3px}

/* header */
.hdr{position:fixed;inset:0 0 auto 0;z-index:50;display:flex;align-items:center;gap:28px;height:72px;padding:0 var(--pad);background:linear-gradient(180deg,rgba(13,12,11,.85),rgba(13,12,11,0));backdrop-filter:blur(2px)}
.hdr.scrolled{background:rgba(13,12,11,.82);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none}
.logo-mark{width:26px;height:26px;color:var(--gold)}
.logo-word{font:400 26px/1 var(--serif);letter-spacing:.04em}
.nav{display:flex;gap:26px;margin-left:24px}
.nav a{font-size:13.5px;text-decoration:none;color:var(--dim);transition:color .2s}
.nav a:hover{color:var(--ivory)}
.demo-tag{margin-left:auto;font:500 11px/1 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--gold);border:1px solid rgba(201,163,103,.4);border-radius:999px;padding:7px 11px;white-space:nowrap}

/* hero */
.hero{position:relative;min-height:100vh;min-height:100svh;padding:120px var(--pad) 40px;display:flex;flex-direction:column;justify-content:flex-end;overflow:hidden;
  background:var(--ink)}
.hero-stage{position:absolute;top:0;right:9vw;width:58vw;height:100%;z-index:0;-webkit-mask:linear-gradient(90deg,transparent,#000 18%,#000 88%,transparent);mask:linear-gradient(90deg,transparent,#000 18%,#000 88%,transparent)}
.hero-inner{position:relative;z-index:2;pointer-events:none;max-width:1500px}
.hero-inner a{pointer-events:auto}
.hero-title{font:300 clamp(54px,8.9vw,150px)/.88 var(--serif);letter-spacing:-.025em;margin:0;text-wrap:balance}
.hero-title .ln{display:block}
.hero-title .ln:nth-child(2){padding-left:.55em}
.hero-foot{display:flex;align-items:flex-end;gap:40px;margin-top:44px;flex-wrap:wrap}
.hero-lead{max-width:430px;margin:0;color:#CFC7B9;font-size:16.5px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.hero-specs{position:absolute;z-index:2;right:var(--pad);top:50%;transform:translateY(-50%);list-style:none;margin:0;padding:0;width:210px}
.hero-specs li{display:flex;flex-direction:column;gap:4px;padding:13px 0;border-top:1px solid var(--line)}
.hero-specs li:last-child{border-bottom:1px solid var(--line)}
.hero-specs span{color:var(--dim-2);font-size:11px}
.hero-specs b{font-weight:400;color:var(--ivory);font-size:12px;letter-spacing:.04em}
.hero-specs li:last-child b{color:var(--gold-hi)}
.hero-hint{position:absolute;z-index:2;left:62%;bottom:42px;margin:0;color:var(--dim);display:flex;align-items:center;gap:10px}
.hint-dot{width:7px;height:7px;border-radius:50%;background:var(--gold);box-shadow:0 0 0 0 rgba(201,163,103,.6);animation:pulse 2.4s 1.2s 1 both}
@keyframes pulse{70%{box-shadow:0 0 0 10px rgba(201,163,103,0)}100%{box-shadow:0 0 0 0 rgba(201,163,103,0)}}
.hero-note{position:absolute;right:var(--pad);bottom:16px;margin:0;color:var(--dim-2);font-size:11px;z-index:2}

/* stage common */
.stage{position:relative}
.hero .hero-stage{position:absolute}
.ring-canvas{display:block;width:100%;height:100%;touch-action:pan-y;cursor:grab;outline:none}
.ring-canvas:active{cursor:grabbing}
.stage-fallback{display:none;width:100%;height:100%;object-fit:cover}
.stage-fallback-note{display:none}
.no-webgl .ring-canvas{display:none}
.no-webgl .stage-fallback{display:block}
.no-webgl .hero-stage .stage-fallback{position:absolute;inset:14% 6% 12% 8%;width:auto;height:auto;border-radius:50% 50% 4px 4px/34% 34% 4px 4px;opacity:.9;
  -webkit-mask:radial-gradient(closest-side,#000 70%,transparent);mask:radial-gradient(closest-side,#000 70%,transparent)}
.no-webgl .stage-fallback-note{display:block;position:absolute;top:56px;left:20px;margin:0;color:var(--gold);background:rgba(13,12,11,.75);padding:6px 10px;border-radius:4px}
.no-webgl .hero-hint,.no-webgl .stage-tip,.no-webgl .stage-reset{display:none}

/* ticker */
.ticker{border-block:1px solid var(--line);overflow:hidden;padding:16px 0;color:var(--dim)}
.ticker-track{display:flex;gap:28px;white-space:nowrap;width:max-content;animation:tick 40s linear infinite}
.ticker i{font-style:normal;color:var(--gold);font-size:8px;align-self:center}
@keyframes tick{to{transform:translateX(-50%)}}
.reduced .ticker-track,.is-shot .ticker-track{animation:none}

/* sections */
.section{padding:clamp(80px,11vw,150px) var(--pad);position:relative}
.light{background:var(--ivory-2);color:#1A1712}
.light em{color:#9A7238}
.light .sec-lead,.light p{color:#4F483E}
.sec-head{max-width:1500px;margin:0 auto clamp(40px,5vw,72px)}
.sec-head-row{display:flex;justify-content:space-between;align-items:flex-end;gap:40px;flex-wrap:wrap}
.sec-title{font:300 clamp(40px,5.6vw,88px)/.95 var(--serif);letter-spacing:-.02em;margin:0;max-width:14ch}
.sec-lead{max-width:440px;color:#C3BBAD;margin:18px 0 0;font-size:16px}
.sec-head-row .sec-lead{margin:0}

/* configurator */
.cfg{max-width:1500px;margin:0 auto;display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,1fr);gap:clamp(24px,3.5vw,56px);align-items:start}
.cfg-visual{position:sticky;top:92px}
.cfg-stage{height:min(66vh,640px);min-height:420px;border:1px solid var(--line);border-radius:6px;overflow:hidden;background:#14110D}
.stage-ui{position:absolute;top:18px;left:20px;right:20px;display:flex;justify-content:space-between;color:var(--dim);pointer-events:none}
.live{display:flex;align-items:center;gap:8px;color:var(--ivory)}
.live i{width:6px;height:6px;border-radius:50%;background:#7BD88F}
.stage-sum{position:absolute;left:20px;bottom:16px;margin:0;color:var(--ivory);font-size:11px;max-width:calc(100% - 120px);pointer-events:none}
.stage-reset{position:absolute;right:16px;bottom:12px;background:transparent;border:1px solid var(--line-2);color:var(--dim);border-radius:999px;padding:7px 12px;cursor:pointer}
.stage-reset:hover{color:var(--ivory);border-color:var(--gold)}
.cfg-stage .stage-fallback{object-fit:cover;opacity:.92}

.engrave-strip{margin-top:14px;display:flex;align-items:center;gap:16px}
.es-label{color:var(--dim-2);font-size:11px;white-space:nowrap}
.es-band{flex:1;height:44px;border-radius:3px;display:flex;align-items:center;justify-content:space-between;padding:0 22px;position:relative;overflow:hidden;
  --m1:#F6DFA4;--m2:#B8873A;background:linear-gradient(180deg,var(--m2) 0%,var(--m1) 38%,#fff6dc 50%,var(--m1) 62%,var(--m2) 100%);transition:background .4s}
.es-band[data-metal=wg]{--m1:#ECEAE5;--m2:#8F8D88}
.es-band[data-metal=rg]{--m1:#F1C3AE;--m2:#A86852}
.es-band[data-metal=ag]{--m1:#F2F3F5;--m2:#85888E}
.es-text{font:italic 400 22px/1 var(--serif);color:rgba(40,26,10,.78);text-shadow:0 1px 0 rgba(255,255,255,.45);letter-spacing:.04em;min-height:1em}
.es-mark{font-size:11px;color:rgba(40,26,10,.85)}

.cfg-panel{display:flex;flex-direction:column}
.opt{border:0;margin:0;padding:22px 0;border-top:1px solid var(--line);min-width:0}
.opt-label{display:flex;gap:10px;align-items:baseline;color:var(--ivory);padding:0;margin:0 0 14px;font-size:11px}
.opt-label span{color:var(--gold)}
.opt-label small{color:var(--dim-2);font-size:11px;text-transform:none;letter-spacing:.02em}
.opt-row{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:14px}
.opt-row .opt-label{margin:0}
.val{color:var(--gold-hi);font-size:11px}
.opt:is(fieldset){padding-top:4px}
.opt.disabled{opacity:.35;pointer-events:none}

.swatches{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}
.sw,.st{position:relative;display:flex;flex-direction:column;align-items:center;gap:10px;padding:14px 6px 12px;border:1px solid var(--line);border-radius:6px;cursor:pointer;text-align:center;transition:border-color .25s,background .25s}
.sw input,.st input,.sizes input{position:absolute;opacity:0;pointer-events:none}
.sw:hover,.st:hover{border-color:var(--line-2)}
.sw:has(input:checked),.st:has(input:checked){border-color:var(--gold);background:rgba(201,163,103,.07)}
.sw:has(input:focus-visible),.st:has(input:focus-visible),.sizes label:has(input:focus-visible){outline:1px solid var(--gold);outline-offset:2px}
.sw-dot,.dot{width:34px;height:34px;border-radius:50%;background:radial-gradient(circle at 32% 28%,#fff 0 8%,var(--c1) 30%,var(--c2) 100%);box-shadow:inset 0 -3px 6px rgba(0,0,0,.25),0 2px 8px rgba(0,0,0,.4)}
.sw-name{font-size:12.5px;line-height:1.25;color:var(--ivory)}
.sw-name small{display:block;font:400 11px/1.4 var(--mono);color:var(--dim);letter-spacing:.06em;margin-top:3px}
.stones{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}
.st{font-size:12.5px}
.gem-ico{width:26px;height:26px;transform:rotate(45deg);border-radius:3px;background:
  linear-gradient(135deg,rgba(255,255,255,.85) 0 18%,transparent 19%),
  linear-gradient(45deg,rgba(0,0,0,.25) 0 50%,transparent 50%),
  linear-gradient(315deg,rgba(255,255,255,.25),transparent 60%),var(--g);box-shadow:inset 0 0 0 1px rgba(255,255,255,.16),2px 2px 5px rgba(0,0,0,.45)}
.gem-ico.big{width:34px;height:34px;flex:none;margin:6px}
.gem-none{background:transparent;border:1px dashed var(--dim-2);box-shadow:none}

input[type=range]{-webkit-appearance:none;appearance:none;width:100%;height:24px;background:transparent;margin:0;cursor:pointer}
input[type=range]::-webkit-slider-runnable-track{height:1px;background:linear-gradient(90deg,var(--gold) var(--p,20%),var(--line-2) var(--p,20%))}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:18px;height:18px;margin-top:-9px;border-radius:50%;background:var(--ink);border:1px solid var(--gold);box-shadow:0 0 0 4px rgba(201,163,103,.12)}
input[type=range]::-moz-range-track{height:1px;background:var(--line-2)}
input[type=range]::-moz-range-progress{height:1px;background:var(--gold)}
input[type=range]::-moz-range-thumb{width:16px;height:16px;border-radius:50%;background:var(--ink);border:1px solid var(--gold)}
.scale{display:flex;justify-content:space-between;color:var(--dim-2);font-size:11px;margin-top:6px}

.text-in,.ct-form input,.ct-form textarea,.modal input{width:100%;background:transparent;border:0;border-bottom:1px solid var(--line-2);color:var(--ivory);font:italic 400 26px/1.3 var(--serif);padding:6px 0 10px;outline:none;border-radius:0}
.text-in:focus,.ct-form input:focus,.ct-form textarea:focus,.modal input:focus{border-color:var(--gold)}
.text-in::placeholder{color:var(--dim-2)}

.sizes{display:grid;grid-template-columns:repeat(10,1fr);gap:6px}
.sizes label{position:relative;cursor:pointer}
.sizes span{display:flex;align-items:center;justify-content:center;height:40px;border:1px solid var(--line);border-radius:4px;font:400 12px/1 var(--mono);color:var(--dim);transition:all .2s}
.sizes label:hover span{border-color:var(--line-2);color:var(--ivory)}
.sizes input:checked+span{border-color:var(--gold);color:var(--ink);background:var(--gold)}

.price-box{margin-top:6px;padding:26px 26px 22px;border:1px solid var(--line-2);border-radius:6px;background:linear-gradient(180deg,rgba(201,163,103,.07),rgba(201,163,103,0))}
.price-top{display:flex;justify-content:space-between;align-items:baseline;gap:12px;flex-wrap:wrap}
.price-cap{color:var(--dim)}
.price{font:300 clamp(40px,3.6vw,54px)/1 var(--serif);letter-spacing:-.01em;color:var(--ivory);font-variant-numeric:lining-nums}
.price-lines{margin:18px 0 20px;display:grid;gap:7px;font-size:11px}
.price-lines div{display:flex;justify-content:space-between;gap:10px;color:var(--dim)}
.price-lines dt{margin:0}
.price-lines dd{margin:0;color:var(--ivory)}
.price-actions{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.price-actions .btn{padding:0 14px}

/* gallery */
.gallery{max-width:1500px;margin:0 auto;display:grid;grid-template-columns:repeat(12,1fr);grid-auto-rows:clamp(150px,15vw,230px);gap:14px}
.g{position:relative;margin:0;overflow:hidden;border-radius:4px;background:var(--ink-3)}
.g-a{grid-column:1/6;grid-row:span 3}
.g-b{grid-column:6/10;grid-row:span 2}
.g-c{grid-column:10/13;grid-row:span 2}
.g-d{grid-column:6/9;grid-row:span 2}
.g-e{grid-column:9/13;grid-row:span 2}
.g-f{grid-column:1/6;grid-row:span 1}
.g img{width:100%;height:100%;object-fit:cover;transition:transform 1.2s var(--ease),filter .6s;filter:saturate(.88) brightness(.9)}
.g::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 45%,rgba(10,9,8,.82));pointer-events:none}
.g figcaption{position:absolute;left:20px;right:20px;bottom:16px;z-index:1;display:grid;gap:4px}
.g figcaption span{color:var(--gold-hi);font-size:11px}
.g figcaption b{font:400 clamp(20px,1.8vw,28px)/1.1 var(--serif)}
.g figcaption i{font-style:normal;color:var(--dim);font-size:11px;max-height:0;opacity:0;transition:all .5s var(--ease)}
.g:hover img{transform:scale(1.06);filter:saturate(1) brightness(1)}
.g:hover figcaption i{max-height:20px;opacity:1}
@media (hover:none){.g figcaption i{max-height:20px;opacity:1}}

/* process */
.steps{list-style:none;margin:0 auto;padding:0;max-width:1500px;display:grid;grid-template-columns:repeat(6,1fr);border-top:1px solid rgba(26,23,18,.18)}
.steps li{position:relative;padding:28px 22px 10px 0;border-right:1px solid rgba(26,23,18,.1);display:flex;flex-direction:column}
.steps .st-t{margin-top:auto}
.steps li+li{padding-left:22px}
.steps li:last-child{border-right:0}
.steps li::before{content:"";position:absolute;top:-4px;left:0;width:7px;height:7px;background:#9A7238;transform:rotate(45deg)}
.steps li+li::before{left:22px}
.st-n{font:300 64px/1 var(--serif);color:#958262;font-variant-numeric:lining-nums}
.steps h3{font:400 26px/1.1 var(--serif);margin:18px 0 10px;color:#1A1712}
.steps p{font-size:14px;margin:0 0 18px}
.st-t{color:var(--mute-l);font-size:11px}

/* materials */
.mat-grid{max-width:1500px;margin:0 auto;display:grid;grid-template-columns:1.2fr 1fr;gap:clamp(30px,5vw,90px)}
.mat-h{font:400 30px/1 var(--serif);margin:0 0 20px}
.spec{width:100%;border-collapse:collapse}
.spec th{text-align:left;color:var(--dim-2);font-weight:400;padding:0 12px 12px 0;border-bottom:1px solid var(--line-2)}
.spec td{padding:18px 12px 18px 0;border-bottom:1px solid var(--line);vertical-align:middle;color:#CFC7B9;font-size:14.5px}
.spec td:first-child{color:var(--ivory);white-space:nowrap;font:400 21px/1.2 var(--serif)}
.spec td.mono{color:var(--gold-hi)}
.spec .dot{display:inline-block;vertical-align:-4px;width:22px;height:22px;margin-right:12px}
.gems{display:grid;gap:12px}
.gem-card{display:flex;gap:18px;padding:20px;border:1px solid var(--line);border-radius:6px;background:var(--ink-2)}
.gem-card h4{font:400 24px/1 var(--serif);margin:0 0 6px}
.gem-card p{margin:0;color:#C3BBAD;font-size:14px}
.gem-card p.mono{color:var(--gold);font-size:11px;margin-bottom:8px}

/* guarantee */
.guarantee{border-top:1px solid var(--line)}
.gu-grid{max-width:1500px;margin:0 auto;display:grid;grid-template-columns:1.4fr repeat(4,1fr);gap:0}
.gu-intro{padding-right:30px}
.gu-item{padding:6px 24px 10px;border-left:1px solid var(--line)}
.gu-ic{display:block;font:300 44px/1 var(--serif);font-variant-numeric:lining-nums;color:var(--gold);margin-bottom:30px;height:44px}
.gu-item h3{font:400 24px/1.1 var(--serif);margin:0 0 10px}
.gu-item p{margin:0;color:#BDB5A7;font-size:14px}

/* reviews */
.badge{display:inline-block;border:1px solid var(--gold-ink);color:var(--gold-ink);border-radius:999px;padding:5px 10px;font-size:11px;margin-right:6px}
.rev-grid{max-width:1500px;margin:0 auto;display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.rev{margin:0;padding:34px 30px 26px;background:#fff;border:1px solid rgba(26,23,18,.08);border-radius:6px;display:flex;flex-direction:column;justify-content:space-between;gap:30px}
.rev p{font:400 23px/1.3 var(--serif);color:#1A1712;margin:0}
.rev footer{color:var(--mute-l);font-size:11px}

/* faq */
.faq-grid{max-width:1500px;margin:0 auto;display:grid;grid-template-columns:1fr 1.4fr;gap:clamp(30px,5vw,90px)}
.faq-list details{border-top:1px solid var(--line)}
.faq-list details:last-child{border-bottom:1px solid var(--line)}
.faq-list summary{list-style:none;cursor:pointer;padding:24px 40px 24px 0;font:400 clamp(21px,1.9vw,27px)/1.2 var(--serif);position:relative}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary::after{content:"+";position:absolute;right:4px;top:50%;transform:translateY(-50%);font:300 26px/1 var(--sans);color:var(--gold);transition:transform .3s}
.faq-list details[open] summary::after{transform:translateY(-50%) rotate(45deg)}
.faq-list p{margin:0 0 24px;color:#C3BBAD;max-width:60ch}

/* contact */
.contact{background:radial-gradient(70% 90% at 20% 100%,#231c12,var(--ink) 65%);border-top:1px solid var(--line)}
.ct-grid{max-width:1500px;margin:0 auto;display:grid;grid-template-columns:1.2fr 1fr;gap:clamp(30px,6vw,110px);align-items:start}
.ct-title{font:300 clamp(52px,8vw,128px)/.9 var(--serif);letter-spacing:-.025em;margin:0}
.ct-left .btn{margin-top:34px}
.ct-list{margin:44px 0 0;display:grid;grid-template-columns:1fr 1fr;gap:18px 30px}
.ct-list dt{color:var(--dim-2);font-size:11px}
.ct-list dd{margin:6px 0 0;color:var(--ivory);text-transform:none;font-size:13px;letter-spacing:.02em}
.ct-list a{text-decoration:none}
.ct-form,.modal-in{display:grid;gap:22px}
.ct-form label,.modal label{display:grid;gap:4px}
.ct-form label span,.modal label span{color:var(--dim)}
.ct-form input,.ct-form textarea,.modal input{font:400 18px/1.4 var(--sans);font-style:normal}
.ct-form textarea{resize:vertical}
.form-ok{color:#9BD8A8;margin:0}

/* footer */
.ftr{display:flex;align-items:center;gap:24px;flex-wrap:wrap;padding:30px var(--pad);border-top:1px solid var(--line)}
.ftr .demo-tag{margin-left:0}
.ftr-small{margin-left:auto;color:var(--dim-2);font-size:11px}

/* modal */
.modal{border:1px solid var(--line-2);border-radius:8px;background:var(--ink-2);color:var(--ivory);padding:0;width:min(480px,calc(100vw - 32px))}
.modal::backdrop{background:rgba(5,5,4,.7);backdrop-filter:blur(6px)}
.modal-in{padding:34px 30px 28px;position:relative}
.modal-x{position:absolute;top:12px;right:14px;background:none;border:0;color:var(--dim);font-size:28px;cursor:pointer}
.modal-title{font:300 44px/1 var(--serif);margin:0;padding-right:36px}
.om-sum{color:var(--dim);margin:0;font-size:11px;line-height:1.7}
.om-price{font:300 34px/1 var(--serif);color:var(--gold-hi);margin:0}

.toast{position:fixed;left:50%;bottom:24px;transform:translate(-50%,20px);background:var(--ivory);color:var(--ink);padding:12px 18px;border-radius:999px;opacity:0;pointer-events:none;transition:all .35s var(--ease);z-index:90;font-size:11px}
.toast.show{opacity:1;transform:translate(-50%,0)}

/* reveal */
.js:not(.reduced):not(.is-shot) .rv{opacity:0;transform:translateY(26px);transition:opacity 1s var(--ease),transform 1s var(--ease)}
.js .rv.in,.js:not(.reduced):not(.is-shot) .rv.in{opacity:1;transform:none}
.is-shot *,.is-shot *::before,.is-shot *::after{transition:none!important;animation:none!important}

/* responsive */
@media (max-width:1180px){
  .nav{display:none}
  .hero-specs{display:none}
  .gu-grid{grid-template-columns:1fr 1fr}
  .gu-intro{grid-column:1/-1;padding:0 0 40px}
  .gu-item{padding:26px 24px 30px;border-top:1px solid var(--line)}
  .steps{grid-template-columns:repeat(3,1fr)}
  .steps li:nth-child(3){border-right:0}
  .steps li:nth-child(4){padding-left:0}
  .steps li:nth-child(4)::before{left:0}
}
@media (max-width:900px){
  .hdr{height:60px;gap:12px}
  .hdr-cta{display:none}
  .logo-word{font-size:23px}
  .hero{padding-top:84px;justify-content:flex-start;min-height:auto}
  .hero .hero-stage{position:relative;right:auto;width:auto;height:min(98vw,460px);margin:0 calc(var(--pad)*-1) -20px;order:2}
  .hero-inner{order:1}
  .hero-foot{order:3;margin-top:0}
  .hero-title{font-size:clamp(46px,13.4vw,92px)}
  .hero-title .ln:nth-child(2){padding-left:0}
  .hero-hint{position:static;order:2;margin:0 0 22px;justify-content:center}
  .hero-note{position:static;order:4;margin-top:24px}
  .hero{display:flex;flex-direction:column}
  .hero-inner{display:contents}
  .hero-inner > .hero-title{order:1}.hero-inner > .hero-foot{order:4}
  .hero-stage{order:2}.hero-hint{order:3}.hero-note{order:5}
  .cfg{grid-template-columns:1fr}
  .cfg-visual{position:relative;top:0}
  .cfg-stage{height:min(92vw,440px);min-height:0}
  .gallery{grid-template-columns:1fr 1fr;grid-auto-rows:44vw;gap:10px}
  .g-a{grid-column:1/-1;grid-row:span 2}
  .g-b,.g-c,.g-d,.g-e{grid-column:auto;grid-row:span 1}
  .g-f{grid-column:1/-1;grid-row:span 1}
  .g figcaption{left:14px;right:14px;bottom:12px}
  .mat-grid,.faq-grid,.ct-grid{grid-template-columns:1fr}
  .rev-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr 1fr}
  .steps li,.steps li+li{padding:24px 16px 6px 0;border-right:0;border-bottom:1px solid rgba(26,23,18,.1)}
  .steps li::before,.steps li+li::before{left:0}
  .steps li:nth-child(even){padding-left:16px;border-left:1px solid rgba(26,23,18,.1)}
  .steps li:nth-child(even)::before{left:16px}
  .st-n{font-size:46px}
}
@media (max-width:560px){
  .demo-tag{font-size:11px;padding:6px 10px;letter-spacing:.03em}
  .hdr .demo-tag{max-width:180px;white-space:normal;line-height:1.25;text-align:center}
  .swatches,.stones{grid-template-columns:repeat(2,1fr)}
  .sw{flex-direction:row;justify-content:flex-start;text-align:left;padding:12px}
  .st{flex-direction:row;justify-content:flex-start;padding:14px 12px}
  .sw-dot{width:28px;height:28px;flex:none}
  .sizes{grid-template-columns:repeat(5,1fr)}
  .price-actions{grid-template-columns:1fr}
  .price-box{padding:22px 18px}
  .engrave-strip{flex-direction:column;align-items:stretch;gap:8px}
  .es-band{flex:none}
  .gu-grid{grid-template-columns:1fr}
  .gu-item{border-left:0;padding:24px 0}
  .gu-ic{margin-bottom:14px}
  .spec td:last-child{display:none}
  .spec th:last-child{display:none}
  .ct-list{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .steps li:nth-child(even){padding-left:0;border-left:0}
  .steps li:nth-child(even)::before{left:0}
  .stage-tip{display:none}
  .stage-sum{display:none}
  .g figcaption b{font-size:18px}
  .g::after{background:linear-gradient(180deg,transparent 30%,rgba(10,9,8,.88))}
  .ftr-small{margin-left:0}
}
/* touch: targets of at least 44px on phones, desktop look unchanged */
@media (pointer:coarse){
  .logo{min-height:44px}
  .ct-list a{display:inline-flex;align-items:center;min-height:44px}
  .ct-list dd{margin-top:0}
  .stage-reset{min-height:44px;min-width:44px;padding:0 16px}
  .modal-x{width:44px;height:44px;top:6px;right:6px}
  input[type=range]{height:44px}
  input[type=range]::-webkit-slider-thumb{width:44px;height:44px;margin-top:-22px;border:0;background:radial-gradient(circle,var(--ink) 0 8px,var(--gold) 8.5px 9.5px,rgba(201,163,103,.14) 10px 13px,transparent 13.5px);box-shadow:none}
  input[type=range]::-moz-range-thumb{width:44px;height:44px;border:0;background:radial-gradient(circle,var(--ink) 0 8px,var(--gold) 8.5px 9.5px,rgba(201,163,103,.14) 10px 13px,transparent 13.5px)}
  .sizes span{height:44px}
  .ct-form input,.modal input{min-height:44px}
  .faq-list summary{min-height:44px}
}
@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms!important;animation:none!important}
}

/* dev helper: ?solo hides hero copy for clean model renders */
.solo .hero-inner,.solo .hero-specs,.solo .hero-hint,.solo .hero-note,.solo .hdr{visibility:hidden}