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(min-width:768px){.product-summary{position:sticky;top:calc(var(--header-height,70px) + var(--spacing-lg))}}.product-brand{display:flex;align-items:center;gap:var(--spacing-xs);margin-bottom:var(--spacing-md);padding-bottom:var(--spacing-md);border-bottom:var(--border-width) solid var(--color-border)}.product-brand-label{font-size:var(--font-size-sm);font-weight:var(--font-weight-medium);color:var(--color-text-muted)}.product-brand-name{font-size:var(--font-size-lg);font-weight:var(--font-weight-semibold);color:var(--color-text)}.product-title{font-size:var(--font-size-2xl);font-weight:var(--font-weight-bold);line-height:var(--line-height-heading);color:var(--color-text-heading);margin:0 0 var(--spacing-md)}@media (min-width:768px){.product-title{font-size:var(--font-size-3xl)}}.product-sku{display:flex;align-items:center;gap:var(--spacing-xs);margin-bottom:var(--spacing-sm);font-size:var(--font-size-sm);color:var(--color-text-muted)}.product-sku 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var(--spacing-md);text-align:center;font-size:var(--font-size-base);font-weight:var(--font-weight-medium);border:var(--border-width) solid var(--color-border);border-radius:var(--radius-md);-moz-appearance:textfield}.product-add-to-cart-form .qty::-webkit-outer-spin-button,.product-add-to-cart-form .qty::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}.product-add-to-cart-form .button{flex:1;min-width:200px;height:48px;padding:0 var(--spacing-xl);font-size:var(--font-size-base);font-weight:var(--font-weight-semibold)}.product-add-to-cart-form .button.single_add_to_cart_button{background-color:var(--color-primary);color:var(--color-on-primary)}.product-add-to-cart-form .button.single_add_to_cart_button:hover,.product-add-to-cart-form .button.single_add_to_cart_button:focus{background-color:var(--color-primary-hover)}.product-add-to-cart-form .button.disabled,.product-add-to-cart-form .button:disabled{background-color:var(--color-border);color:var(--color-text-muted);cursor:not-allowed}.product-add-to-cart-form .stock{display:block;margin-top:var(--spacing-sm);font-size:var(--font-size-sm);font-weight:var(--font-weight-medium)}.product-add-to-cart-form .stock.in-stock{color:var(--color-success)}.product-add-to-cart-form .stock.out-of-stock{color:var(--color-error)}.product-add-to-cart-form .stock.low-stock{color:var(--color-warning)}.product-trust-indicators{display:flex;flex-wrap:wrap;gap:var(--spacing-md);margin-bottom:var(--spacing-xl);padding-top:var(--spacing-lg);border-top:var(--border-width) solid var(--color-border)}.trust-item{display:flex;align-items:center;gap:var(--spacing-xs);flex:1;min-width:140px;padding:var(--spacing-sm) var(--spacing-md);background-color:var(--color-background-alt);border-radius:var(--radius-md);font-size:var(--font-size-sm);font-weight:var(--font-weight-medium);color:var(--color-text)}.trust-item svg{flex-shrink:0;color:var(--color-primary)}.product-meta{display:flex;flex-wrap:wrap;gap:var(--spacing-md);padding-top:var(--spacing-lg);border-top:var(--border-width) solid var(--color-border)}.product-meta>div{display:flex;align-items:center;gap:var(--spacing-xs);font-size:var(--font-size-sm);color:var(--color-text-muted)}.product-meta .meta-label{font-weight:var(--font-weight-medium)}.product-meta a{color:var(--color-text-muted);transition:color var(--transition-fast)}.product-meta a:hover,.product-meta a:focus{color:var(--color-primary)}.product-details{background-color:var(--color-surface);border:var(--border-width) solid var(--color-border);border-radius:var(--radius-lg);overflow:hidden}.product-details .wc-tabs{display:flex;flex-wrap:wrap;margin:0;padding:0;list-style:none;border-bottom:var(--border-width) solid var(--color-border);background-color:var(--color-background-alt)}.product-details .wc-tabs li{margin:0}.product-details .wc-tabs a{display:block;padding:var(--spacing-md) var(--spacing-xl);font-size:var(--font-size-sm);font-weight:var(--font-weight-semibold);color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.05em;text-decoration:none;border-bottom:3px solid transparent;margin-bottom:calc(var(--border-width) * -1);transition:all var(--transition-fast)}.product-details .wc-tabs a:hover,.product-details .wc-tabs a:focus{color:var(--color-primary);background-color:var(--color-background)}.product-details .wc-tabs li.active a{color:var(--color-primary);border-bottom-color:var(--color-primary);background-color:var(--color-surface)}.product-details .wc-tab{display:none;padding:var(--spacing-xl)}.product-details .wc-tab.active{display:block;animation:fadeIn var(--transition-fast)}.product-details .wc-tab h2{font-size:var(--font-size-xl);margin-top:0;margin-bottom:var(--spacing-md)}.product-details .wc-tab p{margin-bottom:var(--spacing-md)}.product-details .wc-tab p:last-child{margin-bottom:0}.product-details .woocommerce-product-attributes{width:100%;border-collapse:collapse}.product-details .woocommerce-product-attributes th,.product-details .woocommerce-product-attributes td{padding:var(--spacing-sm) var(--spacing-md);border-bottom:var(--border-width) solid var(--color-border);text-align:left}.product-details .woocommerce-product-attributes th{width:30%;font-weight:var(--font-weight-semibold);color:var(--color-text-heading);background-color:var(--color-background-alt)}.product-details .woocommerce-product-attributes td{color:var(--color-text)}.product-details .woocommerce-product-attributes tr:last-child th,.product-details .woocommerce-product-attributes tr:last-child td{border-bottom:none}.related-products{margin-top:var(--spacing-2xl)}.related-products h2{font-size:var(--font-size-xl);font-weight:var(--font-weight-bold);margin:0 0 var(--spacing-lg);padding-bottom:var(--spacing-md);border-bottom:var(--border-width) solid var(--color-border)}.related-products .products{display:grid;grid-template-columns:repeat(1,1fr);gap:var(--spacing-lg)}@media (min-width:414px){.related-products .products{grid-template-columns:repeat(2,1fr)}}@media (min-width:768px){.related-products .products{grid-template-columns:repeat(2,1fr)}}@media (min-width:1024px){.related-products .products{grid-template-columns:repeat(4,1fr)}}.related-products .product-card{height:100%}.upsells.products{margin-top:var(--spacing-2xl)}.upsells.products h2{font-size:var(--font-size-xl);font-weight:var(--font-weight-bold);margin:0 0 var(--spacing-lg);padding-bottom:var(--spacing-md);border-bottom:var(--border-width) solid var(--color-border)}@media (max-width:768px){.product-single{padding:var(--spacing-lg) 0}.product-single-grid{gap:var(--spacing-lg)}.product-gallery{position:static}.product-summary{position:static}.product-title{font-size:var(--font-size-xl)}.product-price .woocommerce-Price-amount{font-size:var(--font-size-xl)}.product-add-to-cart-form .cart{flex-direction:column;align-items:stretch}.product-add-to-cart-form .button{width:100%}.trust-item{flex:1 1 calc(50% - var(--spacing-sm));min-width:auto}}@media (max-width:414px){.related-products .products{grid-template-columns:1fr}.trust-item{flex:1 1 100%}}