/* White logo in the header bar. */
.md-header .md-header__button.md-logo img {
  filter: brightness(0) invert(1);
}

/* Sidebar title ("4ward"): top of the hierarchy, larger than section headers. */
.md-nav__title {
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--md-default-fg-color) !important;
}

/* Sidebar section headers: uppercase labels. */
.md-nav__item--section > .md-nav__link {
  font-weight: 700;
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--md-default-fg-color) !important;
  margin-top: 0.6rem;
}

/* Vertical scope line on section children — aligned under the header. */
.md-nav__item--section > .md-nav > .md-nav__list {
  border-left: 1px solid var(--md-default-fg-color--lightest);
  margin-left: 0;
  padding-left: 0.6rem;
}