.site-header{position:fixed;top:0;left:0;right:0;z-index:50;background:rgba(255,255,255,.85);backdrop-filter:blur(8px);box-shadow:0 2px 8px rgba(0,0,0,.06)}
.site-header .nav{max-width:1040px;margin:0 auto;padding:0 16px;height:88px;display:flex;align-items:center;justify-content:space-between}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none}
.brand-logo{height:80px;width:auto;display:block}
.primary-nav ul{display:flex;gap:32px;list-style:none;margin:0;padding:0}
.primary-nav a{color:#0f172a;text-decoration:none;font-weight:600}
.primary-nav a:hover,.primary-nav a.active{color:#2563eb}
.nav-toggle{display:none}
@media(max-width:768px){
  .nav-toggle{display:inline-flex}
  .primary-nav{display:none;position:absolute;top:88px;left:0;right:0;background:#fff;border-top:1px solid #e5e7eb;box-shadow:0 10px 20px rgba(0,0,0,.06)}
  .primary-nav.open{display:block}
  .primary-nav ul{flex-direction:column;padding:12px 16px}
}
main{padding-top:104px}

.primary-nav a[hidden]{display:none !important}