.pdp-decision{display:grid;grid-template-columns:.85fr 1.15fr;gap:clamp(1.5rem,5vw,4rem);align-items:start}
.pdp-art{display:grid;place-items:center;aspect-ratio:4/3;border-radius:1.2rem;background:#dedede;color:#555;font-size:clamp(1.8rem,5vw,4rem);font-weight:900;text-align:center}
.decision-panel{padding:clamp(1.25rem,3vw,2rem);border:1px solid #ccc;border-radius:1rem;background:#fff}
.decision-panel h2{font-size:clamp(1.8rem,4vw,3rem);font-weight:900;line-height:1.1}
.decision-panel .benefit{font-size:1.15rem;color:#444}.pdp-price{margin:1rem 0;font-size:2rem;font-weight:900}.pdp-price small{font-size:.9rem;color:#666}
.cta-row{display:flex;flex-wrap:wrap;gap:.6rem;margin:1rem 0}.key-terms{padding-left:1.2rem;color:#555;line-height:1.8}.channels{margin-top:1rem;padding-top:1rem;border-top:1px solid #ddd;font-size:.9rem}
.detail-grid,.xsell-grid,.help-links{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem}.detail-card,.xsell-card,.help-links a{padding:1.2rem;border:1px solid #ddd;border-radius:.8rem;background:#fff}.detail-card h3,.xsell-card h3{font-weight:900}.detail-card p,.xsell-card p{margin-top:.45rem;color:#666;line-height:1.6}
.pdp-section{padding:3rem 0;border-top:1px solid #ddd}.pdp-section h2{margin-bottom:1rem;font-size:clamp(1.5rem,3vw,2.25rem);font-weight:900}.xsell-module{padding:clamp(1.25rem,3vw,2rem);border-radius:1rem;background:#e5e5e5}.xsell-module>p{margin:-.5rem 0 1.2rem;color:#555}
.spec-table{width:100%;border-collapse:collapse;background:#fff}.spec-table th,.spec-table td{padding:1rem;border-bottom:1px solid #ddd;text-align:left}.spec-table th{width:35%;color:#555}
.step-list{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem;counter-reset:steps}.step-list li{list-style:none;padding:1.2rem;border-top:3px solid #222;background:#fff}.step-list li:before{counter-increment:steps;content:counter(steps);display:block;font-size:1.6rem;font-weight:900}
.choice-tabs{display:flex;gap:.5rem;flex-wrap:wrap;margin:1rem 0}.choice-tabs button{min-height:44px;padding:.6rem 1rem;border:1px solid #aaa;border-radius:999px}.choice-tabs button[aria-pressed=true]{background:#171717;color:#fff}
.mobile-pdp-cta{display:none}.stub-box{max-width:760px;margin:auto;padding:clamp(2rem,6vw,5rem);border:1px solid #bbb;border-radius:1rem;background:#e5e5e5;text-align:center}.stub-box h1{font-size:clamp(2rem,5vw,3.5rem);font-weight:900}.stub-box p{margin:1rem auto;line-height:1.7}.order-number{display:inline-block;padding:.7rem 1rem;background:#fff;font-weight:900;letter-spacing:.08em}.lead-form{display:grid;gap:1rem;text-align:left}.lead-form label{font-weight:800}.lead-form input,.lead-form select{display:block;width:100%;margin-top:.35rem;padding:.8rem;border:1px solid #999;border-radius:.5rem;background:#fff}
.section-tabs{position:fixed;z-index:45;top:0;left:0;right:0;display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:.55rem max(1rem,calc((100vw - 1200px)/2));border-bottom:1px solid #ccc;background:#fff;box-shadow:0 6px 18px #0001;opacity:0;visibility:hidden;transform:translateY(-100%);transition:.2s ease}.section-tabs.is-visible{opacity:1;visibility:visible;transform:none}.section-tabs__nav{display:flex;min-width:0;overflow-x:auto;scrollbar-width:none}.section-tabs__nav a{flex:none;padding:.75rem .9rem;border-bottom:2px solid transparent;white-space:nowrap;font-size:.92rem}.section-tabs__nav a[aria-current]{border-color:#111;font-weight:900}.section-tabs__action{display:flex;align-items:center;gap:.75rem;white-space:nowrap}.section-tabs__action .button-dark{padding:.65rem 1rem}.pdp-section,.detail-card{scroll-margin-top:80px}
@media(max-width:800px){.pdp-decision,.detail-grid,.xsell-grid,.help-links,.step-list{grid-template-columns:1fr}.mobile-pdp-cta{position:sticky;z-index:35;bottom:0;display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:.7rem 1rem;background:#fff;border-top:1px solid #bbb;box-shadow:0 -8px 20px #0002}.mobile-pdp-cta b{font-size:1.05rem}.mobile-pdp-cta .button-dark{white-space:nowrap}}
@media(max-width:800px){.section-tabs{padding:.2rem 0}.section-tabs__nav{width:100%;scroll-snap-type:x proximity}.section-tabs__nav a{min-height:44px;scroll-snap-align:center}.section-tabs__action{display:none}}

/* P16 UX-14: keep the decision and primary action in the first mobile viewport. */
@media(max-width:800px){.pdp-decision{display:flex;flex-direction:column;gap:.75rem}.pdp-decision .decision-panel{order:1;width:100%;padding:1rem}.pdp-decision .pdp-art{order:2;width:100%;max-height:260px;aspect-ratio:3/2}.decision-panel h2{font-size:1.65rem}.decision-panel .benefit{margin:.4rem 0}.pdp-price{margin:.55rem 0;font-size:1.65rem}.choice-tabs{margin:.55rem 0}.cta-row{margin:.65rem 0}.key-terms,.channels{font-size:.82rem;line-height:1.5}.mobile-pdp-cta{min-height:64px}}
.cart-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(18rem,.42fr);gap:1.5rem;align-items:start}.cart-items{display:grid;gap:1rem}.cart-items .card strong{margin-top:1rem;font-size:1.25rem}.cart-items .card button{align-self:flex-start;min-height:44px;margin-top:.5rem;text-decoration:underline}.cart-summary{position:sticky;top:5rem;padding:1.25rem;border:1px solid #aaa;border-radius:1rem;background:#fff}.cart-summary h2{font-size:1.35rem;font-weight:900}.cart-summary p{display:flex;justify-content:space-between;gap:1rem;padding:.8rem 0;border-bottom:1px solid #ddd}.cart-summary small{display:block;margin:1rem 0;color:#555}.cart-summary .button-dark{display:flex;width:100%;justify-content:center;min-height:48px;align-items:center}
@media(max-width:800px){.cart-layout{grid-template-columns:1fr}.cart-summary{position:sticky;z-index:35;bottom:0;top:auto;margin-inline:-1rem;border-radius:0;box-shadow:0 -8px 20px #0002}.cart-summary h2,.cart-summary small{display:none}.cart-summary p{padding:.25rem 0;border:0;font-size:.85rem}.cart-summary .button-dark{margin-top:.6rem}}

/* P16 round C: the product name leads the decision panel. */
.decision-panel .product-summary{margin:.45rem 0;color:#444;font-size:1.05rem;font-weight:700}
.decision-panel .availability{margin-top:.9rem;font-size:.875rem;font-weight:900}
.pdp-page-label{font-size:.875rem;font-weight:800;color:var(--text-muted)}
.decision-panel h1{font-size:clamp(1.8rem,4vw,3rem);font-weight:900;line-height:1.1}
@media(max-width:800px){.decision-panel h1{font-size:1.65rem}}