:root { --header-h: 64px; }
.header { position: sticky; top: 0; z-index: 50; background: #fff; border-bottom: 1px solid rgba(0,0,0,.06); }
.navbar { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 12px 16px; }
.nav-toggle { display: none; border: 0; background: transparent; width: 40px; height: 40px; padding: 8px; border-radius: 8px; }
.nav-toggle:focus-visible { outline: 2px solid #000; outline-offset: 2px; }
.primary-nav { display: flex; gap: 16px; }
.primary-nav .menu { display: flex; list-style: none; margin: 0; padding: 0; gap: 12px; }
.primary-nav .menu > li > a { text-decoration: none; padding: 8px 10px; display: inline-block; }
.nav-overlay { display: none; }
@media (max-width: 1024px) {
  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .primary-nav { position: fixed; inset: var(--header-h) 0 0 30%; transform: translateX(100%); transition: transform .25s ease; background: #fff; flex-direction: column; padding: 16px; border-left: 1px solid rgba(0,0,0,.06); box-shadow: -8px 0 24px rgba(0,0,0,.08); }
  .primary-nav.open { transform: translateX(0); }
  .primary-nav .menu { flex-direction: column; gap: 6px; }
  .nav-overlay { position: fixed; inset: var(--header-h) 0 0 0; background: rgba(0,0,0,.4); display: none; }
  body.menu-open .nav-overlay { display: block; }
  body.menu-open { overflow: hidden; }
}
.primary-nav .menu li.menu-item-has-children > a::after { content: "▾"; margin-left: 6px; font-size: .8em; }
.primary-nav .menu li .sub-menu { display: none; list-style: none; margin: 0; padding: 6px 0 6px 12px; border-left: 2px solid rgba(0,0,0,.06); }
.primary-nav .menu li.open > .sub-menu { display: block; }