.portal-product-navigation { display:flex; align-items:center; justify-content:space-between; gap:16px; padding:8px 24px; border-bottom:1px solid #e2e8f0; background:#fff; color:#334155; font-size:13px; }
.portal-product-navigation .portal-brand { font-weight:700; color:#176c9c; white-space:nowrap; }
.portal-product-navigation nav { display:flex; gap:8px; }
.portal-product-navigation a { display:flex; align-items:center; justify-content:center; min-height:44px; padding:6px 10px; border-radius:6px; text-decoration:none; }
.portal-product-navigation a:hover { background:#f1f5f9; }
.portal-product-navigation a[aria-current="page"] { color:#176c9c; background:#edf5fa; font-weight:700; }
.portal-product-navigation a:focus-visible { outline:2px solid #176c9c; outline-offset:2px; }
@media (max-width:600px) {
  .portal-product-navigation { flex-direction:column; gap:0; padding:4px 12px 8px; }
  .portal-product-navigation nav { width:100%; display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:4px; }
  .portal-product-navigation nav a { text-align:center; line-height:1.3; padding:6px; }
}
@media print { .portal-product-navigation { display:none !important; } }