.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 40;
  height: var(--header-h);
  border-bottom: 1px solid transparent;
  background: linear-gradient(180deg, rgba(10, 8, 9, 0.55), rgba(10, 8, 9, 0));
  transition: background 0.35s var(--ease), border-color 0.35s var(--ease), backdrop-filter 0.35s var(--ease);
}

.site-header.is-scrolled {
  background: rgba(10, 8, 9, 0.88);
  border-bottom-color: var(--line);
  backdrop-filter: blur(16px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  height: var(--header-h);
  width: min(100% - var(--gutter) * 2, 86rem);
  margin-inline: auto;
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 0.08rem;
  text-decoration: none;
  min-width: 0;
}

.brand-mark {
  font-family: var(--serif);
  font-size: 1.15rem;
  line-height: 1;
  color: var(--ivory);
  letter-spacing: 0.04em;
}

.brand-sub {
  font-size: 0.62rem;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--gold);
}

.nav-desktop {
  display: none;
  align-items: center;
  gap: 1.35rem;
}

.nav-desktop a {
  text-decoration: none;
  color: var(--parchment);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.nav-desktop a:hover,
.nav-desktop a[aria-current="page"] {
  color: var(--ivory);
}

.header-cta {
  display: none;
}

.nav-toggle {
  width: 2.75rem;
  height: 2.75rem;
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 0.35rem;
  border: 1px solid var(--line);
}

.nav-toggle span {
  display: block;
  width: 1.1rem;
  height: 1px;
  background: var(--ivory);
  transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(0.38rem) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-0.38rem) rotate(-45deg);
}

.nav-panel {
  position: fixed;
  inset: var(--header-h) 0 0;
  z-index: 39;
  display: flex;
  flex-direction: column;
  gap: 1.15rem;
  padding: 2rem var(--gutter) 3rem;
  background: rgba(10, 8, 9, 0.96);
  transform: translateY(-110%);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: transform 0.4s var(--ease), opacity 0.4s var(--ease), visibility 0.4s;
}

.nav-panel.is-open {
  transform: none;
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.nav-panel a {
  text-decoration: none;
  font-family: var(--serif);
  font-size: clamp(1.7rem, 7vw, 2.4rem);
  color: var(--ivory);
}

.nav-panel .btn {
  width: fit-content;
  margin-top: 0.6rem;
}

body.nav-open {
  overflow: hidden;
}

@media (min-width: 980px) {
  .nav-desktop,
  .header-cta {
    display: flex;
  }

  .nav-toggle,
  .nav-panel {
    display: none;
  }
}