html{scroll-behavior:smooth}
.crumbs{display:flex;align-items:center;gap:var(--s-2);flex-wrap:wrap;padding-top:var(--s-4);padding-bottom:var(--s-3);font-size:14px;color:var(--muted)}.breadcrumb-list{display:flex;align-items:center;gap:9px;min-width:0}.breadcrumb-list span[aria-current="page"]{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.breadcrumb-separator{color:var(--muted)}.crumbs a:not(.back-link):hover{color:var(--text)}
.detail{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);grid-template-areas:"media summary" "content content";column-gap:var(--s-6);row-gap:var(--s-6);align-items:start;padding-bottom:var(--s-7)}.media-column{grid-area:media;min-width:0}.product-summary{grid-area:summary;min-width:0}.product-content{grid-area:content;min-width:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--s-3);align-items:stretch}.product-content>*{margin:0}.product-content .product-note{grid-column:1/-1}.product-content:not(:has(.product-specs)),.product-content:not(:has(.description-card)){grid-template-columns:minmax(0,760px)}
.carousel{position:relative;aspect-ratio:4/3;border-radius:20px;overflow:hidden;background:var(--panel);border:1px solid var(--card-line)}.carousel img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;display:block;opacity:0;transition:opacity .3s ease-out}.carousel img.active{opacity:1}.carousel .ph{position:absolute;inset:0;aspect-ratio:auto;border-radius:0;font-size:4rem}
.carousel-nav{position:absolute;z-index:2;top:50%;transform:translateY(-50%);display:flex;align-items:center;justify-content:center;width:48px;height:48px;border:0;border-radius:12px;background:var(--btn-bg);color:var(--btn-fg);transition:background .15s ease-out}.carousel-nav:hover{background:var(--btn-hover);color:var(--btn-hover-fg)}.carousel-nav.prev{left:var(--s-2)}.carousel-nav.next{right:var(--s-2)}
.carousel-thumbs{display:flex;gap:var(--s-1);margin-top:var(--s-2);overflow-x:auto;padding:2px;scrollbar-width:thin}.carousel-thumb{flex:0 0 96px;width:96px;height:72px;padding:0;border:2px solid transparent;border-radius:8px;overflow:hidden;background:var(--panel);opacity:.6;transition:opacity .15s ease-out,border-color .15s ease-out}.carousel-thumb:hover{opacity:.9}.carousel-thumb.active{opacity:1;border-color:var(--text)}.carousel-thumb img{width:100%;height:100%;object-fit:cover;display:block}
.product-summary .item-tags{margin-bottom:var(--s-2)}.product-title{margin:0 0 var(--s-1);font-size:clamp(30px,3.6vw,48px);text-wrap:balance;line-height:1;font-weight:800;letter-spacing:-.04em;overflow-wrap:anywhere}.product-sku{margin-bottom:var(--s-4);font-size:14px;color:var(--muted)}.product-price{margin-bottom:var(--s-4);font-size:clamp(40px,5vw,56px);line-height:1;font-weight:800;letter-spacing:-.04em}.product-actions{display:flex;gap:var(--s-2);flex-wrap:wrap;margin-bottom:var(--s-4)}
.product-specs,.description-card{margin-bottom:0;padding:var(--s-4);border:1px solid var(--card-line);border-radius:20px;background:var(--panel)}.product-specs h2,.description-card h2{margin:0 0 var(--s-2);font-size:28px;line-height:1.1;font-weight:800;letter-spacing:-.03em}.spec-row{display:flex;justify-content:space-between;gap:var(--s-2);padding:12px 0;border-top:1px solid var(--line);font-size:16px}.spec-row span:first-child{color:var(--muted)}.spec-row span:last-child{font-weight:500;text-align:right;overflow-wrap:anywhere}.description-card p{margin:0;font-size:16px;line-height:1.65;white-space:pre-line}.product-note{margin:0;font-size:14px;line-height:1.6;color:var(--muted)}
.similar .h2{margin-bottom:var(--s-5)}.similar-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:var(--s-3)}
@media(max-width:1100px){.similar-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:899px){.detail{grid-template-columns:1fr;grid-template-areas:"media" "summary" "content";row-gap:var(--s-4);padding-bottom:var(--s-6)}.media-column{width:min(100%,640px)}}
@media(max-width:639px){.crumbs{padding-top:var(--s-3)}.breadcrumb-list{width:100%;flex-wrap:wrap}.breadcrumb-list span[aria-current="page"],.breadcrumb-list .breadcrumb-separator:nth-last-child(2){display:none}.product-actions .btn{flex:1 1 100%}.product-specs,.description-card{padding:var(--s-3)}.similar-grid{grid-template-columns:1fr}.carousel-thumb{flex-basis:64px;width:64px;height:52px}}
@media(prefers-reduced-motion:reduce){.carousel img,.carousel-thumb{transition:none}}
@media(max-width:899px){.product-content,.product-content:not(:has(.product-specs)),.product-content:not(:has(.description-card)){grid-template-columns:minmax(0,1fr)}}
.product-summary .item-tags{position:static;max-width:none}
@media(max-width:639px){.similar-grid{display:flex;gap:var(--s-2);margin:0 calc(var(--gutter)*-1);padding:0 var(--gutter) var(--s-2);overflow-x:auto;scroll-snap-type:x mandatory;scroll-padding-left:var(--gutter);scrollbar-width:none}.similar-grid::-webkit-scrollbar{display:none}.similar-grid .item{flex:0 0 74%;max-width:300px;scroll-snap-align:start}}
.product-summary .product-note{margin-top:var(--s-1)}
/* buy box layout: photo and description left, sticky purchase panel right */
.detail{grid-template-areas:"media summary" "content summary";row-gap:var(--s-5)}
.product-summary{position:sticky;top:calc(var(--header-h) + var(--s-3));display:grid;gap:var(--s-2)}
.product-summary .item-tags,.product-summary .product-title,.product-summary .product-sku{margin:0}
.product-title{font-size:clamp(28px,2.8vw,40px)}
.buybox{display:grid;gap:var(--s-2);padding:var(--s-3);background:var(--panel);border:2px solid var(--nb-line);box-shadow:6px 6px 0 var(--nb-shadow);border-radius:20px}
.buybox .product-price{margin:0;font-size:clamp(40px,4vw,48px)}.buybox .product-availability{margin:0}
.buybox .product-actions{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:0}.buybox .product-actions .btn{width:100%;flex:none}
.buybox .product-social{margin:0;padding-top:var(--s-2);border-top:1px solid var(--line)}
.product-store{display:flex;align-items:flex-start;gap:10px;margin:0;font-size:15px;line-height:1.5;color:var(--text-2)}.product-store .icon{flex:none;width:20px;height:20px;margin-top:2px;color:var(--text)}
.product-content{grid-template-columns:minmax(0,1fr)}.product-content .description-card{order:-1}
.buybar{display:none}
@media(max-width:899px){.detail{grid-template-areas:"media" "summary" "content"}.product-summary{position:static}
.buybar{display:flex;align-items:center;gap:10px;position:fixed;left:0;right:0;bottom:0;z-index:60;padding:10px var(--gutter);background:var(--panel);border-top:2px solid var(--nb-line);transition:transform .2s ease-out}
.buybar.is-hidden{transform:translateY(100%)}.buybar b{font-size:20px;font-weight:800;white-space:nowrap}.buybar .btn{flex:1;min-height:48px;padding:0 12px;font-size:15px}
body:has(.buybar){padding-bottom:72px}.buybox .product-actions{grid-template-columns:1fr}}
@media(prefers-reduced-motion:reduce){.buybar{transition:none}}