.site-header {
  position: relative;
  padding: 0.85rem 1.25rem 0.55rem;
  background-color: var(--bg);
}

.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.15;
  /* PNG first, then SVG over PNG: SVG where supported, PNG otherwise. */
  background-image: url("../images/voronoi-2.png");
  background-image: url("../images/voronoi-2.svg"), url("../images/voronoi-2.png");
  background-repeat: repeat;
  background-size: 200px 200px;
  /* Viewport-locked so the same tile grid continues from header into menu. */
  background-attachment: fixed;
}

.site-name {
  position: relative;
  z-index: 1;
  display: inline-block;
  margin: 0;
  font-size: var(--header-name-size);
  font-weight: 600;
  letter-spacing: 0.08em;
  line-height: 1.2;
  color: var(--text);
  text-decoration: none;
}

.site-name:hover,
.site-name:focus-visible {
  color: var(--text);
}