.site-header {
  position: sticky;
  z-index: 100;
  top: 0;
  border-bottom: 1px solid var(--color-steel);
  background: color-mix(in srgb, var(--color-void) 94%, transparent);
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.32);
  backdrop-filter: blur(12px);
}

.site-header__inner {
  display: flex;
  min-height: 4.75rem;
  align-items: center;
  gap: var(--space-4);
}

.site-header__brand {
  display: inline-flex;
  min-width: 0;
  flex: 0 1 auto;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-text-primary);
  text-decoration: none;
}

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

.site-header__mark {
  width: 42px;
  height: 42px;
  flex: 0 0 42px;
  object-fit: contain;
}

.site-header__brand-text {
  min-width: 0;
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 800;
  letter-spacing: 0.07em;
  line-height: 1;
  text-transform: uppercase;
  white-space: nowrap;
}

.site-header__nav {
  display: flex;
  min-width: 0;
  flex: 1 1 auto;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-4);
}

.site-header__nav-list {
  display: flex;
  min-width: 0;
  align-items: stretch;
  gap: clamp(0.5rem, 1.4vw, 1.25rem);
  margin: 0;
  padding: 0;
  list-style: none !important;
}

.site-header__nav-list li,
.site-header__nav-list li + li {
  display: flex;
  align-items: stretch;
  margin: 0;
  padding: 0;
}

.site-header__nav-list a {
  display: inline-flex;
  min-height: 4.75rem;
  align-items: center;
  border-bottom: 3px solid transparent;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  font-weight: 600;
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
}

.site-header__nav-list a:hover,
.site-header__nav-list a[aria-current="page"] {
  border-bottom-color: var(--color-signal-orange);
  color: var(--color-text-primary);
}

.site-header__play {
  width: auto;
  flex: 0 0 auto;
  white-space: nowrap;
}

.site-header__toggle,
.site-header__mobile-only {
  display: none;
}

.nav-toggle.site-header__toggle {
  flex-direction: column;
}

@media (max-width: 67.5rem) {
  .site-header__inner {
    position: relative;
    min-height: 4.25rem;
    justify-content: space-between;
  }

  .site-header__mark {
    width: 34px;
    height: 34px;
    flex-basis: 34px;
  }

  .site-header__brand-text { font-size: 1rem; }

  .site-header__toggle {
    display: flex;
    flex: 0 0 2.75rem;
  }

  .site-header__toggle[aria-expanded="true"] {
    border-color: var(--color-signal-orange);
    color: var(--color-signal-orange);
  }

  .site-header__toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
  .site-header__toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .site-header__toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

  .site-header__toggle span { transition: transform var(--transition-fast), opacity var(--transition-fast); }

  .site-header__nav {
    position: absolute;
    top: calc(100% + 1px);
    right: 0;
    left: 0;
    display: none;
    max-height: calc(100vh - 4.25rem);
    overflow-y: auto;
    padding: var(--space-4);
    border: var(--border-default);
    border-top: 2px solid var(--color-signal-orange);
    background: var(--color-panel);
    box-shadow: var(--shadow-panel);
  }

  .site-header__nav.is-open { display: grid; gap: var(--space-4); }

  .site-header__nav-list {
    display: grid;
    gap: 0;
  }

  .site-header__nav-list li,
  .site-header__nav-list li + li { display: block; }

  .site-header__nav-list a {
    display: flex;
    min-height: 2.75rem;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--color-steel);
  }

  .site-header__nav-list a:hover,
  .site-header__nav-list a[aria-current="page"] {
    padding-inline-start: var(--space-3);
    border-bottom-color: var(--color-steel);
    border-inline-start: 3px solid var(--color-signal-orange);
  }

  .site-header__mobile-only { display: block; }

  .site-header__play {
    width: 100%;
    min-height: 3rem;
  }
}

@media (max-width: 25rem) {
  .site-header__brand-text { font-size: 0.875rem; letter-spacing: 0.04em; }
}

@media (prefers-reduced-motion: reduce) {
  .site-header__toggle span { transition: none; }
}

ul { list-style: none !important; }
.nav-toggle { flex-direction: column; }