/* Preserve menu layering without pinning the header during scroll. */
.nav {
  position: relative;
  z-index: 30;
  border-bottom: 0;
}

.nav::before {
  content: "";
  position: absolute;
  z-index: -1;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 100vw;
  transform: translateX(-50%);
  background: var(--void);
  border-bottom: 1px solid var(--line);
}