.pg{padding-top:84px;background:var(--night);color:#fff;position:relative;overflow:hidden}
.crumbs{display:flex;gap:8px;align-items:center;font-size:14px;color:#8C9AB5;padding:28px 0 0}
.crumbs a:hover{color:var(--gold-2)}.crumbs svg.i{width:14px;height:14px}
.prod{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,6fr);gap:72px;align-items:center;padding:40px 0 88px;position:relative}
/* 3D book */
.stage3d{display:grid;place-items:center;perspective:1600px;height:520px;position:relative}
.stage3d .ring{position:absolute;width:440px;height:440px;border-radius:50%;border:1px solid rgba(212,167,74,.3)}
.stage3d .ring::after{content:"";position:absolute;inset:34px;border-radius:50%;border:1px dashed rgba(255,255,255,.16);animation:spin 50s linear infinite}
.book3d{position:relative;width:280px;aspect-ratio:2/3;transform-style:preserve-3d;transform:rotateY(-24deg) rotateX(4deg);transition:transform .15s linear;animation:intro 1.4s var(--ease) both}
@keyframes intro{from{transform:rotateY(-90deg) translateY(40px);opacity:0}}
.book3d .front{position:absolute;inset:0;transform:translateZ(18px);border-radius:2px 4px 4px 2px;overflow:hidden;box-shadow:0 40px 70px -24px #000}
.book3d .front img{width:100%;height:100%;object-fit:cover;display:block}
.book3d .front::after{content:"";position:absolute;inset:0;background:linear-gradient(105deg,rgba(255,255,255,.18),transparent 40%);pointer-events:none}
.book3d .pages{position:absolute;top:4px;bottom:4px;right:-18px;width:36px;transform:rotateY(90deg);background:repeating-linear-gradient(90deg,#f4f1ea 0 2px,#d9d4c8 2px 3px)}
.book3d .back{position:absolute;inset:0;transform:translateZ(-18px);background:#1a1a1a;border-radius:4px}
.book3d .spine{position:absolute;top:0;bottom:0;left:-18px;width:36px;transform:rotateY(-90deg);background:#222;filter:brightness(.7)}
.hint{position:absolute;bottom:0;font-size:13px;color:#8C9AB5;display:flex;gap:6px;align-items:center}
.hint svg.i{width:16px;height:16px}
.info .chip{margin-bottom:14px}
.info h1{margin:0 0 10px;font-size:46px;line-height:1.15;font-weight:800;letter-spacing:-.02em}
.byline{color:#AAB6CC;margin:0 0 22px}
.pricebox{display:flex;align-items:baseline;gap:14px;margin-bottom:22px}
.pricebox b{font-size:36px;color:var(--gold-2);font-variant-numeric:tabular-nums}
.stock{display:inline-flex;align-items:center;gap:6px;color:var(--turq);font-size:14px;font-weight:600}
.stock i{width:8px;height:8px;border-radius:50%;background:var(--turq);animation:pulse 1.8s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(63,184,175,.7)}100%{box-shadow:0 0 0 10px rgba(63,184,175,0)}}
.lead{color:#C4CEDF;font-size:17px;max-width:52ch;margin:0 0 28px}
.buy{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.qty{display:flex;align-items:center;height:54px;border-radius:27px;background:rgba(255,255,255,.08);padding:0 6px}
.qty button{width:42px;height:42px;border:0;border-radius:50%;background:none;color:#fff;font-size:20px;transition:background .2s}
.qty button:hover{background:rgba(255,255,255,.12)}
.qty output{min-width:34px;text-align:center;font-weight:700;font-variant-numeric:tabular-nums}
.heart{width:54px;height:54px;border-radius:50%;border:1px solid rgba(255,255,255,.25);background:none;color:#fff;display:grid;place-items:center;transition:all .25s}
.heart:hover{border-color:var(--rose)}
.heart.on{background:var(--rose);border-color:var(--rose)}.heart.on svg{fill:#fff}
.heart.on svg{animation:pop .45s var(--ease)}@keyframes pop{50%{transform:scale(1.4)}}
.btn-gold.added{background:var(--turq);color:#fff}
.assure{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:32px;padding-top:28px;border-top:1px solid rgba(255,255,255,.1)}
.assure div{display:flex;gap:10px;align-items:center;font-size:14px;color:#C4CEDF}
.assure svg.i{color:var(--gold)}
/* details tabs */
.ptabs{display:inline-flex;margin-bottom:28px}
.panel{display:none;max-width:72ch;animation:fadeup .5s var(--ease)}
.panel.on{display:block}
@keyframes fadeup{from{opacity:0;transform:translateY(12px)}}
.panel p{color:var(--soft);font-size:17px}
.specs{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 40px;margin:0}
.specs div{display:flex;justify-content:space-between;gap:16px;padding:14px 0;border-bottom:1px solid var(--line)}
.specs dt{color:var(--soft)}.specs dd{margin:0;font-weight:600}
/* related */
.rail{display:grid;grid-auto-flow:column;grid-auto-columns:calc((100% - 3*24px)/4);gap:24px;overflow-x:auto;scroll-snap-type:x mandatory;scrollbar-width:none;scroll-behavior:smooth;padding-bottom:8px}
.rail::-webkit-scrollbar{display:none}.rail .card{scroll-snap-align:start}
.arw{display:flex;gap:8px}
.arw button{width:46px;height:46px;border-radius:50%;border:1px solid var(--line);background:#fff;display:grid;place-items:center;transition:all .2s}
.arw button:hover{background:var(--night);color:#fff;border-color:var(--night)}
/* sticky bar */
.sticky{position:fixed;inset:auto 0 0;z-index:35;background:rgba(255,255,255,.96);backdrop-filter:blur(10px);box-shadow:0 -10px 30px -18px rgba(15,27,45,.4);transform:translateY(110%);transition:transform .5s var(--ease)}
.sticky.show{transform:none}
.sticky .wrap{display:flex;align-items:center;gap:16px;height:76px}
.sticky img{height:54px;border-radius:2px}
.sticky b{flex:1;font-size:15px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sticky .p{font-weight:800;font-size:18px}
.sticky .btn{height:48px}
.totop{bottom:96px}
@media (max-width:1000px){
  .prod{grid-template-columns:minmax(0,1fr);gap:24px;padding-bottom:56px}
  .stage3d{height:400px}.stage3d .ring{width:320px;height:320px}.book3d{width:210px}
  .info h1{font-size:32px}
  .assure{grid-template-columns:minmax(0,1fr)}
  .specs{grid-template-columns:minmax(0,1fr)}
  .rail{grid-auto-columns:46%}
  .sticky img,.sticky .p{display:none}
}

[dir=rtl] .info h1[dir=ltr]{text-align:right!important}
@media (hover:none){.hint{display:none}}
@media (max-width:1000px){
  .buy:has(.qty){display:grid;grid-template-columns:auto auto;justify-content:space-between}
  .buy:has(.qty) .btn{grid-column:1/-1;grid-row:2;justify-content:center}
  .buy:has(.qty) .heart{grid-row:1;grid-column:2}
}