.site-header {
  height: 72px;

  display: flex;
  align-items: center;
}

.site-header__nav-list {
  display: flex;
  align-items: center;
  gap: 24px;

  list-style: none;
}

.site-header__nav-link {
  font-weight: 600;
  color: var(--c-text);
  text-decoration: none;
  position: relative;
  transition: color var(--duration) var(--timing-function);
}
.site-header__nav-link::after {
  content: "";
  display: block;
  position: absolute;
  left: 0;
  bottom: -4px;

  width: 100%;
  height: 4px;
  background: linear-gradient(to right, var(--c-link) 0%, var(--c-link) 100%);

  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--duration) var(--timing-function);
  pointer-events: none;
}
.site-header__nav-link:hover::after {
  transform: scaleX(1);
}
.site-header__nav-link:hover {
  color: var(--c-link);
}

/* Responsive */
@media (max-width: 640px) {
  .site-header {
    height: auto;
    padding-block: 16px;
  }

  .site-header__nav {
    width: 100%;
  }

  .site-header__nav-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: repeat(2, 1fr);
    gap: 12px;
  }

  .site-header__nav-item {
    text-align: center;
  }
}