.site-nav {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 4px;
}

.site-nav a {
  padding: 8px 11px;
  border-radius: 10px;
  color: #173331;
  font-weight: 700;
  line-height: 1.25;
  text-decoration: none;
  transition: color .16s ease, background-color .16s ease;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: #005d58;
  background: rgba(217, 245, 238, .72);
  outline: none;
}

.site-nav a[aria-current="page"] {
  color: #004e4b;
  background: #d9f5ee;
}

@media (max-width: 780px) {
  header {
    align-items: flex-start;
    flex-direction: column;
  }

  .site-nav {
    width: 100%;
    gap: 2px;
  }

  .site-nav a {
    padding: 7px 9px;
    font-size: .9rem;
  }
}