/* Product-only layout; shared commerce and editorial pages are unchanged. */
.purchase-product .site-header,.purchase-product .site-header.is-compact{background:var(--research-bg);color:var(--research-ink);box-shadow:none;backdrop-filter:none}
.purchase-product .site-footer{color:var(--research-button-ink)}
.purchase-product .site-footer a{color:var(--research-button-ink)}
.purchase-product .site-footer .research-footer-brand img{filter:brightness(0) invert(1)}
.purchase-product .assisted-notice{color:var(--research-ink);background:var(--research-panel)}
.purchase-product .product-shell{width:min(1120px,calc(100% - 48px));padding-top:26px}
.purchase-product .product-layout{grid-template-columns:minmax(0,1fr) minmax(0,1.06fr);grid-template-rows:auto 1fr;gap:20px 48px}
.purchase-product .product-image{grid-column:1;grid-row:1;position:static;margin:0;padding:24px;border-radius:12px;background:#ececdf}
.purchase-product .product-image img{max-height:430px;object-fit:contain}
.purchase-product .product-copy{grid-column:2;grid-row:1;min-width:0}
.purchase-product .product-information{grid-column:2;grid-row:2;min-width:0}
.purchase-product .product-copy h1{font-size:clamp(34px,4vw,54px);line-height:1.06;margin:8px 0 10px}
.purchase-product .product-copy .presentation{margin:0 0 16px;font-size:16px}
.purchase-product .price{font-size:30px;line-height:1.2;margin:14px 0 8px}
.purchase-product .availability{font-size:13px;margin:0 0 18px}
.purchase-product .actions{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:0 0 16px}
.purchase-product .actions .button{min-width:0;min-height:48px;padding:12px 10px;font-size:13px}
.product-buy-facts{padding:14px 16px;border:1px solid var(--line);border-radius:8px;background:var(--research-panel);font-size:13px}
.product-buy-facts p{margin:0 0 4px;font-weight:600}
.product-buy-facts a{display:inline-block;padding:3px 0}
.product-question{display:inline-block;margin:8px 0;padding:8px 0;font-size:13px}
.product-documentation{grid-column:1;grid-row:2;align-self:start;padding:22px 24px;border:1px solid var(--line);border-radius:12px;background:var(--research-panel);min-width:0;scroll-margin-top:20px}
.product-documentation h2{font-size:23px;line-height:1.2;margin:0 0 16px}
.product-documentation>dl{display:grid;grid-template-columns:auto minmax(0,1fr);gap:6px 18px;margin:0;font-size:13px}
.product-documentation dt{color:var(--muted)}
.product-documentation dd{margin:0;font-weight:600;overflow-wrap:anywhere}
.product-documentation>p{font-size:12px;line-height:1.6;color:var(--muted);margin:14px 0}
.documentation-link{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:10px 20px;border-radius:7px;background:var(--accent-dark);color:var(--research-button-ink);text-decoration:none;font-size:13px;font-weight:600}
.documentation-link:hover{background:var(--research-hover);color:var(--research-button-ink)}
.purchase-product details{border-top:1px solid var(--line);margin-top:12px}
.purchase-product summary{min-height:48px;padding:14px 2px;cursor:pointer;font-size:13px;font-weight:600}
.purchase-product details .product-section{margin:0;padding:8px 0 18px;border:0;background:none}
.purchase-product details .product-section h2{font-size:19px}
.purchase-product details p,.purchase-product details .coa-meta{font-size:13px}
.purchase-product .product-documentation .product-section{margin:14px 0 0;padding:0;border:0}
.purchase-product .product-documentation .product-section h2{font-size:19px}
.purchase-product .product-information>.product-section{margin-top:20px;padding-top:20px}
.purchase-product .product-information>.product-section h2{font-size:25px;line-height:1.2}
.purchase-product .product-information>.product-section p{font-size:14px}
.purchase-product .signal-list{font-size:12px;margin:8px 0 0}
.purchase-product .product-certificate-quick{font-size:12px;margin-bottom:10px}
@media(max-width:700px){
 .purchase-product .product-shell{width:calc(100% - 32px);padding-top:18px}
 .purchase-product .product-layout{display:grid;grid-template-columns:minmax(0,1fr);grid-template-rows:auto auto auto auto;gap:20px}
 .purchase-product .product-image{grid-column:1;grid-row:1;padding:12px}
 .purchase-product .product-image img{max-height:280px}
 .purchase-product .product-copy{display:block;grid-column:1;grid-row:2}
 .purchase-product .product-information{grid-column:1;grid-row:4}
 .purchase-product .product-copy h1{font-size:36px}
 .product-documentation{grid-column:1;grid-row:3;padding:20px}
 .purchase-product .actions{gap:8px}
 .purchase-product .actions .button{font-size:12px;padding:12px 6px}
 .product-documentation>dl{grid-template-columns:minmax(0,1fr);gap:2px}
 .product-documentation dd{margin-bottom:8px}
 .purchase-product .product-purchase-bar{gap:10px}
 .purchase-product .product-purchase-bar>span{min-width:0}
 .purchase-product .product-purchase-bar .button{flex-shrink:0;min-width:0;font-size:12px;padding:12px}
}