/* Approved expanded header row; homepage section order stays unchanged. */
.site-header {
  z-index: 30;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  transition: margin-bottom 180ms ease-out;
}
.primary-nav { position: static; transform: none; margin: 0; }
.site-header:has(.about-nav[open]) { margin-bottom: var(--about-row-height, 68px); }
.about-nav { position: static; }
.about-nav > summary {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  list-style: none;
  color: #e9e7e1;
  font: 700 12px/1 var(--mono);
  text-transform: uppercase;
  cursor: pointer;
}
.about-nav > summary::-webkit-details-marker { display: none; }
.about-chevron {
  width: 7px;
  height: 7px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: translateY(-2px) rotate(45deg);
}
.about-nav[open] .about-chevron { transform: translateY(2px) rotate(225deg); }
.about-nav > summary:hover,
.about-nav > summary:focus-visible,
.about-nav[open] > summary { color: var(--yellow); }
.about-nav > summary:focus-visible,
.primary-nav .about-links a:focus-visible {
  outline: 2px solid var(--yellow);
  outline-offset: 3px;
}
.about-links {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  width: auto;
  min-height: 68px;
  padding: 12px 20px;
  background: var(--ink);
  border: 0;
  border-bottom: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 32px;
}
.primary-nav .about-links a {
  display: flex;
  min-height: 44px;
  padding: 10px 0;
  font: 500 14px/1.4 var(--sans);
  text-transform: none;
  text-decoration: none;
  color: var(--paper);
}
.primary-nav .about-links a[aria-current="page"] {
  color: var(--paper);
  background: transparent;
}
.primary-nav .about-links a:hover,
.primary-nav .about-links a:focus-visible {
  color: var(--yellow);
  background: transparent;
}
.about-nav[open] .about-links a { animation: row-appear 180ms ease-out; }
@keyframes row-appear { from { opacity: 0; } to { opacity: 1; } }
@media (max-width:620px) {
  .site-header { display: flex; }
  .site-header:has(.about-nav[open]) { margin-bottom: var(--about-row-height, 108px); }
  .primary-nav { position: static; left: auto; transform: none; }
  .about-nav > summary { font-size: 10px; }
  .about-links {
    min-height: 108px;
    padding: 10px 32px;
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 0 24px;
  }
  .primary-nav .about-links a { min-width: 0; overflow-wrap: anywhere; }
}
@media (prefers-reduced-motion: reduce) {
  .site-header { transition: none; }
  .about-nav[open] .about-links a { animation: none; }
}