.service-header {
  gap: 1.5rem;
}

.service-header-nav {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.service-menu {
  position: relative;
}

.service-menu summary {
  display: flex;
  align-items: center;
  gap: .45rem;
  padding: .8rem 1rem;
  border: 1px solid rgba(255, 255, 255, .42);
  border-radius: 999px;
  cursor: pointer;
  list-style: none;
  font-size: .78rem;
  font-weight: 850;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.service-menu summary::-webkit-details-marker {
  display: none;
}

.service-menu summary span {
  color: var(--tone, var(--gold));
  transition: transform .2s ease;
}

.service-menu[open] summary span {
  transform: rotate(180deg);
}

.service-menu-list {
  position: absolute;
  top: calc(100% + .65rem);
  right: 0;
  width: min(430px, 88vw);
  padding: .75rem;
  border: 1px solid rgba(255, 255, 255, .18);
  border-radius: 18px;
  background: rgba(4, 16, 28, .99);
  box-shadow: 0 25px 70px rgba(0, 0, 0, .48);
}

.service-menu-list a {
  display: grid;
  grid-template-columns: 35px 1fr;
  gap: .7rem;
  padding: .72rem .8rem;
  border-radius: 10px;
  line-height: 1.25;
  text-decoration: none;
  font-size: .75rem;
  font-weight: 800;
}

.service-menu-list a:hover,
.service-menu-list a:focus-visible,
.service-menu-list a[aria-current="page"] {
  color: var(--ink);
  background: var(--tone, var(--gold));
  outline: none;
}

.service-menu-list b {
  color: var(--tone, var(--gold));
  font-family: ui-monospace, monospace;
}

.service-menu-list a:hover b,
.service-menu-list a:focus-visible b,
.service-menu-list a[aria-current="page"] b {
  color: var(--ink);
}

@media (max-width: 780px) {
  .service-header-nav {
    gap: .55rem;
  }

  .service-menu summary {
    padding: .65rem .75rem;
    font-size: .68rem;
  }

  .service-menu-list {
    position: fixed;
    top: 74px;
    right: .7rem;
    left: .7rem;
    width: auto;
    max-height: calc(100vh - 90px);
    overflow-y: auto;
  }

  .service-header .back-link {
    display: none;
  }
}