.site-topbar {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  min-height: 58px;
  padding: .9rem 4vw;
  border-bottom: 1px solid var(--line);
  background: rgba(239, 230, 210, .94);
  color: var(--faded);
  font-family: "Courier Prime", "Courier New", monospace;
  font-size: .78rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  backdrop-filter: blur(4px);
  transition: box-shadow .2s ease;
}

.site-topbar.scrolled { box-shadow: 0 14px 30px -22px rgba(51, 41, 28, .55); }

.site-topbar a { color: inherit; text-decoration: none; }

.site-topbar__brand {
  flex: none;
  color: var(--ink) !important;
  font-family: "Special Elite", "Courier Prime", monospace;
  font-size: .95rem;
  letter-spacing: .2em;
}

.site-topbar__brand b { color: var(--seal); }

.site-topbar__nav { display: flex; gap: 1.5rem; }
.site-topbar__nav a { position: relative; padding-bottom: 2px; }
.site-topbar__nav a::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: -3px;
  left: 0;
  height: 1px;
  background: var(--seal);
  transform: scaleX(0);
  transition: transform .2s ease;
}
.site-topbar__nav a:hover,
.site-topbar__nav a:focus-visible,
.site-topbar__nav a[aria-current="page"] { color: var(--seal); }
.site-topbar__nav a:hover::after,
.site-topbar__nav a:focus-visible::after,
.site-topbar__nav a[aria-current="page"]::after { transform: scaleX(1); }

.site-topbar__search {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  flex: none;
  padding: .45rem .7rem;
  border: 1px solid var(--line);
  border-radius: 0;
  background: transparent;
  color: var(--ink);
  font: inherit;
  letter-spacing: .08em;
  text-transform: uppercase;
  cursor: pointer;
}
.site-topbar__search:hover { border-color: var(--seal); color: var(--seal); }
.site-topbar__search svg {
  width: 15px;
  height: 15px;
  flex: none;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
}

@media (max-width: 680px) {
  .site-topbar { flex-wrap: wrap; gap: .55rem 1rem; }
  .site-topbar__nav {
    order: 3;
    width: 100%;
    justify-content: space-between;
    gap: .5rem;
    padding-top: .45rem;
    border-top: 1px dotted var(--line);
    font-size: .68rem;
  }
  .site-topbar__search span { display: none; }
  .site-topbar__search { padding: .45rem .6rem; }
}

@media (prefers-reduced-motion: reduce) {
  .site-topbar,
  .site-topbar__nav a::after { transition: none; }
}