.site-nav {
  position: relative;
  z-index: 10;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 30px;
  padding: 20px clamp(22px, 5vw, 72px);
  border-bottom: 1px solid var(--line);
  color: var(--ink);
}

.site-nav__brand {
  flex: none;
  font: 400 25px/1 "Instrument Serif", Georgia, serif;
  text-decoration: none;
}

.site-nav__menu { margin-left: auto; }

.site-nav__menu summary {
  display: none;
  cursor: pointer;
  list-style: none;
  font-size: 9px;
  font-weight: 500;
  letter-spacing: .17em;
  text-transform: uppercase;
}

.site-nav__menu summary::-webkit-details-marker { display: none; }

.site-nav__links {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 12px clamp(14px, 2vw, 28px);
  font-size: 9px;
  font-weight: 500;
  letter-spacing: .14em;
  text-transform: uppercase;
}

.site-nav__links a { text-decoration: none; text-underline-offset: 4px; }
.site-nav__links a:hover,.site-nav__links a:focus-visible { text-decoration: underline; }

.service-switch {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
  padding: 11px clamp(22px, 5vw, 72px);
  border-bottom: 1px solid var(--line);
  color: var(--quiet);
  font-size: 8px;
  font-weight: 500;
  letter-spacing: .15em;
  text-transform: uppercase;
}
.service-switch a { text-decoration: none; text-underline-offset: 4px; }
.service-switch a[aria-current="page"] { color: var(--green); }
.service-switch a:hover,.service-switch a:focus-visible { text-decoration: underline; }

@media (max-width: 1050px) {
  .site-nav__menu summary { display: block; }
  .site-nav__links { display: none; }
  .site-nav__menu[open] .site-nav__links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 24px;
    padding: 8px clamp(22px, 5vw, 72px) 20px;
    border-bottom: 1px solid var(--line);
    background: var(--paper);
  }
  .site-nav__links a { padding: 14px 0; border-top: 1px solid var(--line); }
}

@media (max-width: 540px) {
  .site-nav { padding: 18px 20px; }
  .site-nav__brand { font-size: 22px; }
  .service-switch { padding-inline: 20px; }
}