@media (max-width: 68rem) {
  .desktop-nav { gap: .8rem; }
  .desktop-nav .nav-optional { display: none; }
  .footer-grid { grid-template-columns: 1.4fr repeat(3, minmax(0, 1fr)); }
}

@media (max-width: 47.9375rem) {
  body { padding-bottom: 5rem; }
  .site-header { position: sticky; }
  .header-row { min-height: 4.5rem; }
  .brand { min-width: auto; }
  .brand-mark { font-size: 1.35rem; }
  .desktop-nav { display: none; }
  .menu-toggle { display: grid; }
  .mobile-menu { position: fixed; z-index: 79; top: 4.5rem; right: 0; left: 0; max-height: calc(100svh - 4.5rem); overflow: auto; padding: 1rem var(--content-gutter) 2rem; border-bottom: 1px solid var(--avita-line-dark); background: var(--avita-ivory); box-shadow: var(--shadow-float); }
  .mobile-menu.is-open { display: grid; }
  .mobile-menu a { min-height: 3.25rem; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--avita-line-dark); color: var(--avita-charcoal); font-size: .72rem; letter-spacing: .12em; text-transform: uppercase; }
  .mobile-menu a::after { content: "→"; color: var(--avita-copper); }
  .mobile-menu details { border-bottom: 1px solid var(--avita-line-dark); }
  .mobile-menu summary { min-height: 3.25rem; display: flex; align-items: center; justify-content: space-between; color: var(--avita-charcoal); font-size: .72rem; letter-spacing: .12em; text-transform: uppercase; cursor: pointer; list-style: none; }
  .mobile-menu summary::-webkit-details-marker { display: none; }
  .mobile-menu summary::after { content: "+"; color: var(--avita-copper); }
  .mobile-menu details[open] summary::after { content: "−"; }
  .mobile-menu details div { padding-left: 1rem; }
  .mobile-menu details a { min-height: 2.8rem; font-size: .65rem; }
  .starter-hero { min-height: 72svh; }
  .starter-hero::after { width: 54vw; opacity: .35; }
  .starter-actions { display: grid; }
  .starter-actions .button { width: 100%; }
  .route-grid { grid-template-columns: 1fr; }
  .route-card, .route-card:nth-child(3n+2), .route-card:nth-child(3n+3) { min-height: auto; padding: 1.5rem 0; border-left: 0; }
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .mobile-book { position: fixed; z-index: 90; right: .7rem; bottom: calc(.6rem + env(safe-area-inset-bottom)); left: .7rem; min-height: 3.8rem; display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: .55rem .6rem .55rem 1rem; border: 1px solid rgba(255,255,255,.12); border-radius: .7rem; background: rgba(23, 19, 15, .97); color: var(--avita-white); box-shadow: var(--shadow-float); backdrop-filter: blur(.75rem); }
  .mobile-book span { font-size: .64rem; letter-spacing: .1em; text-transform: uppercase; }
  .mobile-book b { padding: .72rem .9rem; border-radius: .2rem; background: var(--avita-ivory); color: var(--avita-ink); font-size: .62rem; letter-spacing: .12em; text-transform: uppercase; }
}