@media (max-width:900px){
  .nav{height:58px;padding:0 18px;grid-template-columns:1fr auto}
  .wordmark{font-size:.7rem;letter-spacing:.12em}
  .launch-pill,.cart-link{font-size:.72rem;white-space:nowrap}
  .retail-hero{padding:4rem 20px 0;min-height:auto}
  .retail-hero .hero-copy{padding:0}
  .retail-hero .hero-copy h1{font-size:clamp(2.75rem,11vw,4.25rem);line-height:.98;letter-spacing:-.055em;max-width:680px;margin-inline:auto}
  .retail-hero .hero-copy>p:not(.overline){font-size:1.05rem;line-height:1.5;max-width:520px}
  .retail-hero .hero-links{margin-top:1.5rem}
  .retail-hero .hero-visual{min-height:250px;margin-top:2rem}
  .retail-hero .hero-visual img{max-height:300px;width:100%;object-fit:contain}
  .intro{padding:4.5rem 22px 2.5rem}
  .intro h2{font-size:clamp(2.2rem,9vw,3.5rem)}
  .product-grid{gap:.75rem;padding:.75rem}
  .product-card{min-height:590px;padding-top:3rem}
  .product-card h3{font-size:clamp(2.25rem,9vw,3.5rem)}
  .principles{padding:5rem 24px}
  .launch{padding:5rem 22px}
  .launch h2{font-size:clamp(2.8rem,11vw,4rem)}
  .product-buybox{display:flex;flex-direction:column;padding:2.25rem 18px 3rem;gap:1.5rem}
  .product-summary{order:1;width:100%}
  .product-gallery{order:2;width:100%;height:300px;padding:.75rem;border-radius:20px;overflow:hidden}
  .product-gallery img{height:100%;aspect-ratio:auto;object-fit:contain}
  .product-summary h1{font-size:clamp(2.6rem,10vw,3.7rem);line-height:.98}
  .value-prop{font-size:1rem}
  .price{font-size:1.8rem;margin:1.25rem 0 .35rem}
  .buy-actions{grid-template-columns:1fr 1fr}
  .section-shell{padding:4.5rem 24px}
  .section-heading{margin-bottom:2rem}
  .section-heading h2{font-size:clamp(2.3rem,9vw,3.5rem)}
  .component-grid,.audience-grid{grid-template-columns:1fr 1fr}
  .feature-grid{grid-template-columns:1fr}
  .final-buy{padding:4.5rem 22px 6.5rem}
  .sticky-cart{display:none}
  .has-cart .sticky-cart{display:flex}
  footer{padding-bottom:5.5rem}
}
@media (max-width:560px){
  .hero-links{flex-direction:column;align-items:stretch;gap:.65rem}
  .hero-links a{display:flex;justify-content:center;align-items:center;min-height:46px}
  .hero-links .shop-button{color:#fff}
  .hero-links a:not(.shop-button){border:1px solid #d2d2d7;border-radius:999px}
  .product-card{min-height:540px}
  .product-card img{height:255px}
  .product-gallery{height:250px}
  .buy-actions,.component-grid,.audience-grid,.material-comparison{grid-template-columns:1fr}
  .trust-row{gap:.35rem}
  .section-shell{padding:3.75rem 20px}
  .component-card{padding:1.25rem}
  .spec-table th,.spec-table td{display:block;width:100%;padding:.65rem 0}
  .spec-table th{border-bottom:0;padding-bottom:.1rem}
  .sticky-cart{padding:.65rem .8rem}
  .sticky-cart strong{max-width:190px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
}