.site-header {
  position: sticky;
  z-index: 80;
  top: 0;
  border-block-end: 1px solid var(--color-border);
  background: var(--color-smoked-glass);
  box-shadow: var(--shadow-inset-rule);
  backdrop-filter: blur(14px);
}

.site-header__inner {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  min-block-size: 5.5rem;
  gap: var(--space-5);
}

.site-header__brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  min-inline-size: 0;
  color: var(--color-linen);
  text-decoration: none;
}

.site-header__brand:hover { color: var(--color-linen); }

.site-header__logo {
  flex: 0 0 2.625rem;
  inline-size: 2.625rem;
  block-size: 2.625rem;
  max-inline-size: none;
  object-fit: contain;
}

.site-header__brand-copy {
  display: grid;
  gap: 0.16rem;
  min-inline-size: 0;
}

.site-header__brand-name,
.site-header__brand-descriptor {
  display: block;
  white-space: nowrap;
  text-transform: uppercase;
}

.site-header__brand-name {
  font-size: 1.125rem;
  font-weight: 600;
  letter-spacing: 0.075em;
  line-height: 1;
}

.site-header__brand-descriptor {
  color: var(--color-sandstone);
  font-size: 0.5625rem;
  font-weight: 600;
  letter-spacing: var(--tracking-descriptor);
  line-height: 1.25;
}

.site-header__nav {
  justify-self: center;
  min-inline-size: 0;
}

.site-header__nav-list {
  display: flex;
  align-items: center;
  gap: clamp(0.5rem, 1vw, 1rem);
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-header__nav-list li,
.site-header__nav-list li + li { margin: 0; padding: 0; }

.site-header__nav-link {
  display: inline-flex;
  align-items: center;
  gap: 0.42rem;
  color: var(--color-linen);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  line-height: 1;
  text-decoration: none;
  text-transform: uppercase;
  white-space: nowrap;
}

.site-header__nav-marker {
  display: grid;
  flex: 0 0 auto;
  place-items: center;
  inline-size: 1.45rem;
  block-size: 1.45rem;
  border: 1px solid var(--color-border-strong);
  border-radius: 50%;
  color: var(--color-sandstone);
  font-size: 0.54rem;
  letter-spacing: 0;
  transition: border-color var(--transition-fast), background-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
}

.site-header__nav-link:hover { color: var(--color-sandstone); }
.site-header__nav-link:hover .site-header__nav-marker { border-color: var(--color-copper-rose); color: var(--color-linen); transform: rotate(4deg); }
.site-header__nav-link[aria-current="page"] .site-header__nav-marker { border-color: var(--color-copper-rose); background: var(--color-copper-rose); color: var(--color-atlantic-ink); }

.site-header__controls {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.site-header__seat {
  min-inline-size: auto;
  padding-inline: var(--space-4);
  white-space: nowrap;
}

.site-header__toggle {
  display: none;
  align-items: center;
  justify-content: center;
  inline-size: 3rem;
  block-size: 3rem;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-control);
  background: transparent;
  color: var(--color-linen);
}

.site-header__toggle-line {
  position: absolute;
  inline-size: 1.2rem;
  block-size: 1px;
  background: currentColor;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.site-header__toggle-line:nth-child(1) { transform: translateY(-0.36rem); }
.site-header__toggle-line:nth-child(3) { transform: translateY(0.36rem); }
.site-header__toggle[aria-expanded="true"] { border-color: var(--color-copper-rose); color: var(--color-sandstone); }
.site-header__toggle[aria-expanded="true"] .site-header__toggle-line:nth-child(1) { transform: rotate(45deg); }
.site-header__toggle[aria-expanded="true"] .site-header__toggle-line:nth-child(2) { opacity: 0; }
.site-header__toggle[aria-expanded="true"] .site-header__toggle-line:nth-child(3) { transform: rotate(-45deg); }

.site-header__mobile-links { display: none; }

.site-header__ticker {
  overflow: hidden;
  block-size: 1.55rem;
  border-block-start: 1px solid rgba(232, 222, 208, 0.1);
  color: color-mix(in srgb, var(--color-linen) 45%, transparent);
  font-size: 0.5625rem;
  font-weight: 600;
  letter-spacing: var(--tracking-utility);
  line-height: 1.55rem;
  text-transform: uppercase;
  white-space: nowrap;
}

.site-header__ticker-track {
  display: inline-block;
  min-inline-size: max-content;
  animation: site-header-ticker 36s linear infinite;
}

.site-header__ticker span { color: var(--color-copper-rose); margin-inline: 0.7rem; }
.site-header__ticker:hover .site-header__ticker-track { animation-play-state: paused; }

@keyframes site-header-ticker { to { transform: translateX(-50%); } }

@media (max-width: 1100px) {
  .site-header__inner { grid-template-columns: minmax(0, 1fr) auto; min-block-size: 4.8rem; }
  .site-header__toggle { display: inline-flex; position: relative; }
  .site-header__nav {
    position: absolute;
    z-index: 1;
    inset: 100% var(--gutter) auto;
    display: none;
    max-block-size: calc(100vh - 6.4rem);
    overflow-y: auto;
    border: 1px solid var(--color-border);
    background: rgba(9, 27, 33, 0.97);
    box-shadow: var(--shadow-elevation);
  }
  .site-header__nav.is-open { display: block; }
  .site-header__nav-list { display: grid; gap: 0; }
  .site-header__nav-list li { border-block-end: 1px solid var(--color-border); }
  .site-header__nav-link { justify-content: flex-start; min-block-size: 3.5rem; padding-inline: var(--space-4); font-size: var(--text-utility); }
  .site-header__nav-marker { inline-size: 2rem; block-size: 2rem; }
  .site-header__mobile-links { display: grid; gap: 0; padding: var(--space-2) var(--space-4) var(--space-4); }
  .site-header__mobile-links a { padding-block: var(--space-3); border-block-end: 1px solid var(--color-border); color: var(--color-text-muted); font-size: var(--text-utility); font-weight: 600; letter-spacing: var(--tracking-utility); text-decoration: none; text-transform: uppercase; }
}

@media (max-width: 700px) {
  .site-header__inner { gap: var(--space-3); }
  .site-header__logo { flex-basis: 2.125rem; inline-size: 2.125rem; block-size: 2.125rem; }
  .site-header__brand { gap: var(--space-2); }
  .site-header__brand-name { font-size: 0.94rem; }
  .site-header__brand-descriptor { font-size: 0.5rem; }
  .site-header__seat { min-inline-size: auto; min-block-size: 3rem; padding-inline: var(--space-3); font-size: 0.625rem; }
  .site-header__nav { inset-inline: var(--gutter); }
  .site-header__nav-link { min-block-size: 3.5rem; }
}

@media (max-width: 430px) {
  .site-header__seat { padding-inline: 0.65rem; letter-spacing: 0.08em; }
}

@media (max-width: 389px) {
  .site-header__brand-descriptor { display: none; }
  .site-header__seat { font-size: 0; inline-size: 3rem; padding: 0; }
  .site-header__seat::after { content: "Seat"; font-size: 0.625rem; letter-spacing: 0.08em; }
}

@media (prefers-reduced-motion: reduce) {
  .site-header__ticker-track { animation: none; }
}