:root{
  --bg:#0f0f0f;
  --gold:#C9A36A;
  --gold-2:#E2C28E;
  --cream:#f1ede6;
  --cream-card:#faf8f4;
  --text-2:#d2d2d2;
  --serif:'Frank Ruhl Libre', serif;
  --latin-serif:'Cormorant Garamond', 'Frank Ruhl Libre', serif;
  --sans:'Heebo', sans-serif;
  --nav-h:62px;
}
@media (min-width:768px){:root{--nav-h:76px}}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  background:var(--bg);
  color:#fff;
  font-family:var(--sans);
  font-weight:300;
  min-height:100vh;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%;width:100%;height:100%;object-fit:cover}

.col-nav{
  position:sticky;top:0;z-index:20;
  display:flex;align-items:center;justify-content:space-between;
  gap:16px;
  padding:0 clamp(18px,5vw,72px);
  height:var(--nav-h);
  background:rgba(12,11,10,.92);
  backdrop-filter:blur(16px);
  border-bottom:1px solid rgba(201,163,106,.16);
}
.col-nav .logo{display:flex;flex-direction:column;align-items:center;line-height:1}
.col-nav .logo .l1{
  font-family:var(--latin-serif);font-weight:500;font-size:22px;
  letter-spacing:.18em;color:var(--gold-2);
}
.col-nav .logo .l2{
  font-family:var(--sans);font-size:9px;letter-spacing:.28em;color:rgba(241,237,230,.7);
}
.col-nav-links{display:flex;gap:clamp(14px,2.5vw,28px);flex-wrap:wrap;list-style:none}
.col-nav-links a{
  font-size:13px;letter-spacing:.04em;color:rgba(241,237,230,.72);
  transition:color .3s;
}
.col-nav-links a:hover,.col-nav-links a.active{color:var(--gold-2)}
.col-back{
  font-size:13px;color:rgba(241,237,230,.65);
  transition:color .3s;
}
.col-back:hover{color:var(--gold-2)}

.col-hero{
  padding:clamp(48px,8vw,88px) clamp(18px,5vw,72px) clamp(28px,5vw,48px);
  text-align:center;
  background:
    radial-gradient(800px 420px at 50% 0%, rgba(201,163,106,.12), transparent 60%),
    var(--bg);
}
.col-hero h1{
  font-family:var(--serif);font-weight:400;
  font-size:clamp(32px,6vw,52px);
  color:var(--cream);
  letter-spacing:.02em;
}
.col-hero p{
  margin-top:14px;
  font-size:15px;
  color:var(--text-2);
  max-width:36ch;
  margin-inline:auto;
  line-height:1.7;
}
.col-line{
  width:48px;height:1px;margin:22px auto 0;
  background:linear-gradient(90deg,transparent,var(--gold),transparent);
}

.col-grid-wrap{
  padding:clamp(24px,4vw,48px) clamp(18px,5vw,72px) clamp(64px,10vw,120px);
}
.col-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:clamp(14px,2vw,24px);
  max-width:1200px;
  margin-inline:auto;
}
.col-card{
  background:var(--cream-card);
  border:1px solid rgba(201,163,106,.16);
  border-radius:8px;
  overflow:hidden;
}
.col-card .img-slot{aspect-ratio:1/1;background:#e8ddc9}

.col-footer{
  border-top:1px solid rgba(201,163,106,.14);
  padding:28px clamp(18px,5vw,72px);
  text-align:center;
  color:rgba(210,210,210,.55);
  font-size:13px;
}
.col-footer a{color:var(--gold);margin-inline:8px}
.col-footer a:hover{color:var(--gold-2)}

/* ============ 3D product stage ============ */
.col-stage-wrap{
  padding:clamp(8px,2vw,24px) clamp(18px,5vw,72px) clamp(64px,10vw,120px);
}
.col-stage{
  position:relative;
  max-width:920px;
  margin-inline:auto;
  border-radius:18px;
  border:1px solid rgba(201,163,106,.22);
  background:
    radial-gradient(ellipse 58% 48% at 50% 38%, rgba(214,168,90,.14), transparent 68%),
    radial-gradient(ellipse 90% 70% at 50% 100%, rgba(8,6,5,.96), transparent 72%),
    linear-gradient(165deg, #1a1410 0%, #0c0a09 48%, #120e0b 100%);
  box-shadow:
    0 28px 80px -28px rgba(0,0,0,.85),
    0 0 60px -24px rgba(201,163,106,.22);
  overflow:hidden;
  min-height:clamp(360px,62vh,620px);
}
.col-stage__glow{
  position:absolute;inset:8% 12% 18%;
  pointer-events:none;z-index:0;
  background:
    radial-gradient(ellipse 55% 50% at 50% 45%, rgba(242,200,121,.22), rgba(214,168,90,.08) 42%, transparent 72%);
  filter:blur(18px);
  opacity:.9;
}
.col-stage__canvas{
  position:relative;z-index:1;
  display:block;
  width:100%;
  height:clamp(360px,62vh,620px);
  cursor:grab;
  touch-action:none;
  background:transparent;
}
.col-stage__canvas:active{cursor:grabbing}
.col-stage__loading{
  position:absolute;inset:0;z-index:3;
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:14px;
  background:rgba(12,10,8,.58);
  color:rgba(226,194,142,.85);
  font-size:13px;letter-spacing:.1em;
  transition:opacity .5s ease;
  pointer-events:none;
}
.col-stage__loading[hidden]{display:none}
.col-stage__loading-bar{
  width:min(180px,42%);height:1px;overflow:hidden;
  background:rgba(201,163,106,.2);
}
.col-stage__loading-bar > i{
  display:block;height:100%;width:0%;
  background:linear-gradient(90deg,transparent,var(--gold-2),transparent);
  transition:width .2s linear;
}
.col-stage__hint{
  position:relative;z-index:2;
  text-align:center;
  padding:0 20px 22px;
  font-size:12.5px;
  letter-spacing:.08em;
  color:rgba(226,194,142,.62);
}

@media (max-width:900px){
  .col-grid{grid-template-columns:repeat(2,1fr)}
  .col-nav-links{display:none}
}
@media (max-width:520px){
  .col-grid{grid-template-columns:1fr}
  .col-stage,
  .col-stage__canvas{min-height:min(72vw,420px);height:min(72vw,420px)}
}