.site-header {
  position: sticky;
  z-index: 100;
  top: 0;
  border-bottom: var(--border-default);
  background: rgb(27 29 32 / 0.97);
  box-shadow: var(--shadow-inset);
}

.site-header::after {
  position: absolute;
  right: 0;
  bottom: -1px;
  left: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgb(217 101 43 / 0.4), transparent);
  content: "";
}

.site-header__inner {
  position: relative;
  display: grid;
  min-height: 68px;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: center;
}

.site-header__side {
  display: flex;
  min-width: 0;
  align-items: center;
}

.site-header__side--left { justify-content: flex-start; }
.site-header__side--right { justify-content: flex-end; }

.site-header__desktop-nav { min-width: 0; }

.site-header__nav-list,
.site-header__mobile-list {
  display: flex;
  min-width: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-header__nav-list {
  align-items: center;
  gap: clamp(0.5rem, 1.5vw, 1.125rem);
}

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

.site-header__nav-list a {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  border-bottom: 2px solid transparent;
  color: var(--color-ash-primary);
  font-size: var(--text-sm);
  font-weight: 600;
  line-height: var(--leading-sm);
  text-decoration: none;
  white-space: nowrap;
}

.site-header__nav-list a:hover,
.site-header__nav-list a:focus-visible,
.site-header__nav-list a[aria-current="page"] {
  border-bottom-color: var(--color-ember);
  color: var(--color-ember-bright);
}

.site-header__brand {
  display: inline-flex;
  min-width: 0;
  max-width: 190px;
  align-items: center;
  justify-self: center;
  gap: 0.5rem;
  color: var(--color-ash-primary);
  text-decoration: none;
}

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

.site-header__brand-name {
  overflow: hidden;
  font-family: var(--font-heading);
  font-size: 1.5625rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.site-header__toggle {
  display: none;
  width: 44px;
  padding: 0;
  place-items: center;
  border: var(--border-default);
  background: var(--color-basalt-raised);
}

.site-header__toggle:hover { border-color: var(--color-ember); }

.site-header__toggle-lines {
  display: grid;
  width: 20px;
  gap: 4px;
}

.site-header__toggle-lines span {
  display: block;
  height: 2px;
  background: var(--color-ash-primary);
  transition: transform var(--transition-fast), opacity var(--transition-fast), background-color var(--transition-fast);
}

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

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

@media (max-width: 56.25rem) {
  .site-header__inner { min-height: 60px; }
  .site-header__desktop-nav { display: none; }
  .site-header__toggle { display: grid; }
  .site-header__side--left { min-height: 44px; }

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

  .site-header__brand-name { font-size: 1.25rem; }

  .site-header__mobile-nav {
    position: absolute;
    z-index: 1;
    top: calc(100% + 1px);
    right: var(--container-pad);
    left: var(--container-pad);
    display: block;
    max-height: min(72vh, 34rem);
    overflow-y: auto;
    border: var(--border-default);
    border-top: 2px solid var(--color-ember);
    border-radius: var(--radius-md);
    background: var(--color-basalt);
    box-shadow: var(--shadow-raised), var(--shadow-inset);
  }

  .site-header__mobile-nav[hidden] { display: none; }

  .site-header__mobile-list {
    display: grid;
    gap: 1px;
    background: var(--color-stone-line);
  }

  .site-header__mobile-list a {
    display: flex;
    min-height: 48px;
    align-items: center;
    background: var(--color-basalt);
    color: var(--color-ash-primary);
    padding: 0.75rem 1rem;
    font-weight: 600;
    text-decoration: none;
  }

  .site-header__mobile-list a:hover,
  .site-header__mobile-list a:focus-visible,
  .site-header__mobile-list a[aria-current="page"] {
    background: var(--color-basalt-raised);
    color: var(--color-ember-bright);
    box-shadow: inset 2px 0 0 var(--color-ember);
  }
}

@media (max-width: 45rem) {
  .site-header__mobile-nav {
    right: var(--container-pad-mobile);
    left: var(--container-pad-mobile);
  }
}

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