@media(max-width:900px){
  .site-shell{width:min(calc(100% - 1rem),1240px);margin:.5rem auto;min-height:calc(100vh - 1rem)}
  .site-header{padding:0 1rem;min-height:66px;position:relative;flex-wrap:wrap}
  .wordmark{font-size:.75rem;white-space:normal;max-width:230px}
  .menu-toggle{display:inline-flex}
  .primary-navigation{display:none;width:100%;order:3;flex-direction:column;align-items:stretch;gap:0;padding:.5rem 0 1rem;border-top:1px solid var(--border)}
  .primary-navigation.is-open{display:flex}
  .primary-navigation a{padding:1rem 0;border-bottom:1px solid var(--border)}
  .nav-login{margin-top:.75rem;text-align:center}
  .home-hero,.product-stack{width:min(calc(100% - 2rem),var(--container))}
  .product-panel__body,.product-panel--compact .product-panel__body{grid-template-columns:1fr;gap:1.5rem}
  .product-pair{grid-template-columns:1fr}
  .meta-grid{display:grid;grid-template-columns:repeat(3,1fr)}
  .meta-row{border-bottom:0;border-right:1px solid var(--border)}
  .meta-row:last-child{border-right:0}
  .section-grid{grid-template-columns:1fr}
  .feature-grid{grid-template-columns:1fr 1fr}
  .feature-cell:nth-child(3n){border-right:1px solid var(--border)}
  .feature-cell:nth-child(2n){border-right:0}
  .feature-cell:nth-last-child(-n+3){border-bottom:1px solid var(--border)}
  .feature-cell:nth-last-child(-n+2){border-bottom:0}
  .footer-contact-grid{grid-template-columns:1fr}
  .footer-contact-grid>a,.footer-contact-grid>div{border-right:0;border-bottom:1px solid var(--border);min-height:100px;padding:1.25rem}
  .footer-contact-grid>*:last-child{border-bottom:0}
  .footer-legal{align-items:flex-start;flex-direction:column;padding:1rem 1.25rem}
}
@media(max-width:620px){
  .container,.page-title-section,.section{width:min(calc(100% - 2rem),var(--container))}
  .home-hero{padding:3.75rem 0 3rem}
  .home-hero h1{font-size:clamp(2.65rem,14vw,4.5rem);letter-spacing:.055em}
  .product-panel__header{align-items:flex-start;padding:1rem;flex-direction:column}
  .product-panel__body{padding:1rem}
  .meta-grid{grid-template-columns:1fr}
  .meta-row{border-right:0;border-bottom:1px solid var(--border)}
  .meta-row:last-child{border-bottom:0}
  .product-panel__name{font-size:clamp(2.1rem,13vw,3.5rem);letter-spacing:.04em;overflow-wrap:anywhere}
  .product-panel__actions{align-items:stretch;flex-direction:column}
  .button{width:100%}
  .feature-grid{grid-template-columns:1fr}
  .feature-cell,.feature-cell:nth-child(2n),.feature-cell:nth-child(3n){border-right:0;border-bottom:1px solid var(--border)}
  .feature-cell:last-child{border-bottom:0}
  .support-directory{grid-template-columns:1fr}
  .ledger-row{grid-template-columns:1fr;gap:.35rem}
  .access-form{grid-template-columns:1fr}
  .footer-legal nav{flex-direction:column;gap:.6rem}
}