.header-inner { gap: 18px; }
.site-nav { gap: 5px; }
.site-nav a { display: inline-flex; align-items: center; justify-content: center; min-height: 42px; padding: 8px 9px; border: 1px solid transparent; border-radius: 10px; text-align: center; }
.site-nav a[aria-current="page"] { color: var(--cyan); background: rgba(34,211,238,.12); border-color: rgba(34,211,238,.55); box-shadow: inset 0 -3px 0 var(--cyan); font-weight: 850; }
.site-nav a[data-nav-page="calculator"] { color: #dffcff; border-color: rgba(34,211,238,.28); }
.site-nav a[data-nav-page="calculator"][aria-current="page"] { color: var(--cyan); border-color: rgba(34,211,238,.55); }
@media(max-width:1100px) {
  .header-inner { gap: 12px; }
  .site-nav a { padding-inline: 7px; font-size: 12px; }
}
@media(max-width:1000px) {
  .header-inner { min-height: 0; display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 0; padding-top: 12px; }
  .header-cta { display: none; }
  .menu-button { display: block; margin-left: auto; }
  .site-nav, .site-nav.open { position: static; order: 3; width: 100%; display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 4px; margin: 10px 0 0; padding: 0 0 10px; border: 0; background: transparent; }
  .site-nav a { min-width: 0; min-height: 44px; padding: 9px 3px; font-size: 12px; white-space: normal; line-height: 1.25; }
  .site-nav .nav-secondary { display: none; }
  .site-nav .nav-secondary[aria-current="page"] { display: inline-flex; grid-column: 1 / -1; color: var(--cyan); }
  .site-nav.open .nav-secondary { display: inline-flex; grid-column: span 2; color: var(--muted); font-size: 12px; }
  .site-nav.open .nav-secondary[aria-current="page"] { color: var(--cyan); }
}
@media(max-width:375px) {
  .site-nav a { font-size: 11px; padding-inline: 1px; }
}