.primary-nav {position:static;transform:none;margin-inline:auto;gap:4px}
.primary-nav>a {min-width:0;padding:0 clamp(12px,2vw,26px);font-size:20px}
.header-tools {margin-left:0}
.back-to-collection {display:block;width:90%;max-width:1440px;margin:0 auto;padding-top:28px;font-size:12px;letter-spacing:.04em;color:var(--gold)}
.product-hero {padding-top:65px}
.mobile-purchase {display:none}
@media(max-width:809px){
  .header-tools {margin-left:auto}
  .product-hero {padding-top:20px}
  .back-to-collection {padding-top:20px}
  .mobile-purchase {position:fixed;bottom:0;left:0;right:0;z-index:25;display:flex;align-items:center;gap:16px;padding:12px 18px calc(12px + env(safe-area-inset-bottom));background:#1b1d1ef5;border-top:1px solid var(--line);box-shadow:0 -8px 30px #0004}
  .mobile-purchase>span {font-family:'Noto Serif',Georgia,serif;font-size:16px;flex:1;min-width:0}
  .mobile-purchase .gold-button {font-size:10px;padding:12px 14px;min-height:44px;max-width:65%}
  body:has(.mobile-purchase) .site-footer {padding-bottom:110px}
  body.modal-open .mobile-purchase {display:none}
}