/* Purchase-only refinements; shared Research tokens and economic rules unchanged. */
[hidden]{display:none!important}
.purchase-product .site-header{height:auto;padding:0;display:block}
.purchase-product .site-header nav{position:static;width:auto;padding:0;box-shadow:none;border:0;background:none;display:flex}
.product-card__image-link{display:block;color:inherit;text-decoration:none;border-radius:inherit}
.product-card__image-link:focus-visible{outline:3px solid var(--research-focus);outline-offset:-4px}
.product-card__title-link,.details-button{min-height:44px;display:inline-flex;align-items:center}
.field-error{display:block;color:var(--research-error-ink,#ffc4bd);font-size:.82rem}
[aria-invalid="true"]{outline:2px solid var(--research-error-ink,#ffc4bd);outline-offset:1px}
.address-help{font-size:.82rem;color:var(--research-muted);margin:0}
.cart-item__controls button,.icon-button,.shipping-option{min-height:44px;min-width:44px}
.cart-item__controls{flex-wrap:wrap}
.dialog .checkout h3{font-size:1.4rem;margin:0 0 16px}.dialog .checkout>.eyebrow{display:none}.dialog .shipping-policy summary{min-height:44px;cursor:pointer;display:flex;align-items:center}.dialog .cart-item{padding-top:14px;padding-bottom:14px}.dialog .checkout{padding:14px}.dialog .checkout .button--checkout{position:sticky;bottom:0;z-index:3}
.cart-dialog .shipping-policy{margin:12px 0;font-size:.8rem}
.cart-dialog .shipping-policy p{margin:4px 0}
.cart-dialog .button--checkout,.checkout-dialog .button--checkout{white-space:normal;min-height:48px}
.checkout-dialog,.cart-dialog{max-height:calc(100dvh - 24px);overscroll-behavior:contain}
.checkout-form{padding-bottom:max(24px,env(safe-area-inset-bottom))}
body:has(dialog[open]){overflow:hidden}
body:has(dialog[open]) .product-purchase-bar,body:has(dialog[open]) .whatsapp-contact,body:has(dialog[open]) .john-chat__trigger{visibility:hidden;pointer-events:none}
.purchase-product .site-header{position:relative;top:auto}
.purchase-product .site-header__inner{min-height:76px}
.purchase-product .site-header nav{align-items:center}
.purchase-product .product-cart-trigger{font-size:13px;padding:8px 14px;min-height:44px}
.purchase-product .assisted-notice{font-size:13px;padding:10px 20px;text-align:center;border-bottom:1px solid var(--research-line);background:var(--research-panel)}
.purchase-product .product-image{margin:0}
.purchase-product .product-copy h1{font-size:clamp(2.4rem,5vw,4.5rem)}
.purchase-product .product-copy>.price{font-size:1.8rem;line-height:1.2;margin:12px 0 4px}
.purchase-product .presentation{margin:10px 0;font-size:1rem}
.purchase-product .availability{margin:6px 0 12px;font-size:.9rem}
.purchase-product .actions{display:flex;flex-wrap:wrap;gap:10px;margin:12px 0}
.purchase-product .actions .button{min-height:48px;font:inherit;font-weight:600;cursor:pointer}
.purchase-product .button:disabled{opacity:.55;cursor:not-allowed}
.purchase-product .product-section{margin-top:24px}
.purchase-product .cart-dialog .button,.purchase-product .checkout-dialog .button{font-family:var(--research-body-font)}
.product-rescue{text-align:center;padding:12px 20px}.product-rescue a{display:inline-flex;align-items:center;min-height:44px}
.product-purchase-bar{display:none}
@media(max-width:700px){
  .product-detail__layout{display:flex;flex-direction:column;gap:16px}.product-detail__copy{order:0;padding:0}.product-detail__visual{order:1;max-height:230px;overflow:hidden}.product-detail__price{margin:12px 0;font-size:1.6rem}.product-detail__actions{margin:12px 0}
  .hero{min-height:0;padding:26px 20px;display:block}
  .hero__copy{padding:0;max-width:none}
  .hero h1{font-size:2.15rem;line-height:1.02;margin-bottom:14px}
  .hero__lead{font-size:.9rem;line-height:1.5;margin-bottom:16px}
  .hero__instrument,.hero__image,.hero__wash{display:none}
  .hero__note{margin-top:12px;font-size:.7rem}
  .hero__actions{gap:8px}
  .hero__actions .button{padding:12px 16px;min-height:44px}
  .trust-strip{display:none}
  .free-shipping-banner{padding:12px 20px;margin:0;font-size:.85rem}
  .catalog.section{padding-top:24px}
  .catalog .section-heading h2{font-size:1.9rem;line-height:1.05}
  .catalog .section-heading h2 br{display:none}
  .catalog-heading__aside p{font-size:.8rem;line-height:1.4}
  .catalog-search{margin:12px 0}
  .catalog-toolbar{gap:6px;margin-bottom:14px}
  .catalog-toolbar .filter{padding:10px;min-height:44px}
  .study-select{display:grid;grid-template-columns:1fr;gap:6px;margin:0}
  .study-select select{min-height:46px;font-size:16px;width:100%}
  .study-nav{display:none}
  .purchase-product{padding-bottom:calc(82px + env(safe-area-inset-bottom))}
  .purchase-product .site-header__inner{width:calc(100% - 28px);min-height:64px;gap:10px;flex-wrap:nowrap}
  .purchase-product .brand img{width:116px}
  .purchase-product .site-header nav{gap:8px;flex-wrap:nowrap}
  .purchase-product .site-header nav>a:not(:first-child){display:none}
  .purchase-product .site-header nav>a{min-height:44px;display:flex;align-items:center}
  .purchase-product .product-shell{padding:14px 0 32px;width:calc(100% - 28px)}
  .purchase-product .breadcrumbs ol{margin:0 0 14px;font-size:.75rem}
  .purchase-product .product-layout{display:flex;flex-direction:column;gap:18px}
  .purchase-product .product-copy{display:contents}
  .purchase-product .product-image{position:static;width:100%;padding:8px;order:7;border-radius:16px}
  .purchase-product .product-image img{max-height:210px;width:100%;object-fit:contain}
  .purchase-product .product-copy>.eyebrow{order:0;margin:0;font-size:.7rem}
  .purchase-product .product-copy>h1{order:1;font-size:2.3rem;margin:0;line-height:1.05}
  .purchase-product .product-secondary{order:2;margin:0}
  .purchase-product .presentation{order:3;margin:0}
  .purchase-product .product-copy>.price{order:4;margin:0;font-size:1.7rem}
  .purchase-product .availability{order:5;margin:0}
  .purchase-product .actions{order:6;margin:0;width:100%;display:grid;grid-template-columns:1fr}
  .purchase-product .actions .button{width:100%;justify-content:center}
  .purchase-product .signal-list{order:8;margin:0}
  .purchase-product .product-section,.purchase-product .context-links,.purchase-product .ruo{order:9;width:100%}
  .product-purchase-bar{position:fixed;z-index:35;bottom:0;left:0;right:0;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 14px calc(10px + env(safe-area-inset-bottom));background:var(--research-bg);border-top:1px solid var(--research-line)}
  .product-purchase-bar>span{min-width:0;font-size:.85rem;line-height:1.3}
  .product-purchase-bar strong{display:block;overflow:hidden;white-space:nowrap;text-overflow:ellipsis;max-width:34vw}
  .product-purchase-bar small{display:block;font-size:.8rem}
  .product-purchase-bar .button{padding:10px 16px;min-height:48px;font-size:.85rem;white-space:nowrap}
  .purchase-product:has(input:focus,textarea:focus,select:focus,.assisted-purchase:focus-within) .product-purchase-bar{display:none}
  .cart-dialog,.checkout-dialog{width:calc(100% - 12px);max-width:none;max-height:calc(100dvh - 12px);margin:auto;border-radius:16px}
  .dialog-shell,.checkout-form{padding:18px 14px}
  .cart-layout{grid-template-columns:1fr;gap:18px}
  .form-grid{grid-template-columns:1fr}
  .cart-item{grid-template-columns:1fr auto;gap:10px}
  .cart-item__swatch{display:none}
  .cart-item h4{font-size:1rem}
  .cart-item__controls button{padding:8px}
  .dialog-header h2{font-size:1.5rem;line-height:1.15}
  .checkout-form .field input:not([type=checkbox]),.checkout-form .field select,.checkout-form .field textarea{font-size:16px;min-height:46px}
  .checkout-form .field:has(input[type=checkbox]){min-height:44px;justify-content:center}
  /* One visible rescue control; WhatsApp remains available in normal footer flow. */
  .whatsapp-contact{position:static;width:auto;margin:16px auto 24px;display:flex;justify-content:center;border-radius:12px;max-width:220px}
  .john-chat__trigger{min-height:44px}
  .catalog .section-heading{margin-bottom:12px;gap:8px}
  .catalog .section-heading h2{font-size:1.65rem;line-height:1.1;margin-bottom:8px}
  .catalog .section-heading h2::after{display:none}
  .catalog-heading__aside{display:flex;align-items:center;gap:12px}
  .catalog-heading__aside p{font-size:.75rem;line-height:1.4}
  .catalog-explainer-link{flex-shrink:0;min-height:44px;font-size:.7rem}
  .catalog-family__header{margin-bottom:16px}
  .catalog-family__header h3{font-size:1.4rem;line-height:1.15;text-wrap:initial}
  .catalog-family__header>div>p{display:none}
  .catalog-toolbar [data-catalog-status]{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}
  .study-explorer{padding:12px 0;margin:0 0 14px}
  .study-explorer__heading{display:none}
  .catalog-family__header{padding:14px 0;gap:8px}
  .catalog-family__header>p,.catalog-family__header>span{display:none}
  .product-card__research-area,.product-family-label,.product-card__meta{display:none}
}
@media(max-width:360px){.purchase-product .product-layout{gap:10px}.purchase-product .product-copy>h1{font-size:1.9rem}.purchase-product .assisted-notice{font-size:.72rem;padding:6px 14px}.purchase-product .breadcrumbs ol{margin-bottom:10px}}
@media(prefers-reduced-motion:reduce){.product-purchase-bar{transition:none}}