.site-header {
  position: sticky;
  z-index: 100;
  top: 0;
  width: 100%;
  border-bottom: 1px solid rgb(185 196 216 / 18%);
  background: rgb(10 13 28 / 92%);
  box-shadow: 0 12px 34px rgb(0 0 0 / 18%);
  backdrop-filter: blur(16px);
}

.site-header__shell {
  width: min(var(--container-width), var(--container-max));
  margin-inline: auto;
}

.site-header__bar {
  display: flex;
  min-height: 5.5rem;
  align-items: center;
  gap: clamp(0.75rem, 1.8vw, 1.5rem);
}

.site-header__brand {
  display: flex;
  min-width: 0;
  flex: 0 1 auto;
  align-items: center;
  gap: 0.7rem;
  color: var(--color-ivory-glow);
  text-decoration: none;
}

.site-header__logo {
  width: 3rem;
  height: 3rem;
  flex: 0 0 3rem;
  object-fit: contain;
}

.site-header__brand-copy {
  display: grid;
  min-width: 0;
  gap: 0.08rem;
}

.site-header__brand-name {
  font-size: 0.94rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  line-height: 1.1;
  white-space: nowrap;
}

.site-header__brand-subtitle {
  color: var(--color-text-muted);
  font-size: 0.63rem;
  line-height: 1.25;
  white-space: nowrap;
}

.site-header__nav {
  min-width: 0;
  flex: 1 1 auto;
}

.site-header__route {
  display: flex;
  min-width: 0;
  align-items: center;
  justify-content: center;
  gap: clamp(0.35rem, 1vw, 0.8rem);
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-header__route > li,
.site-header__route > li + li {
  margin: 0;
  padding: 0;
}

.site-header__station {
  position: relative;
  min-width: 0;
  padding-top: 0.65rem;
}



.site-header__station a {
  display: block;
  color: var(--color-starlight-silver);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  line-height: 1.2;
  text-decoration: none;
  text-transform: uppercase;
  white-space: nowrap;
  transition: color var(--transition-fast);
}

.site-header__station:hover::before,
.site-header__station:has(a[aria-current="page"])::before {
  border-color: var(--color-comet-cyan);
  background: var(--color-comet-cyan);
  box-shadow: 0 0 0.7rem rgb(78 217 232 / 65%);
}

.site-header__station:hover a,
.site-header__station a[aria-current="page"] {
  color: var(--color-comet-cyan);
}

.site-header__cta,
.site-header__menu-cta {
  flex: 0 0 auto;
  white-space: nowrap;
}

.site-header__menu-cta,
.site-header__toggle,
.site-header__station--mobile {
  display: none;
}

.site-header__toggle {
  width: 2.75rem;
  height: 2.75rem;
  flex: 0 0 2.75rem;
  align-items: center;
  justify-content: center;
  gap: 0.28rem;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  background: var(--color-polished-obsidian);
}

.site-header__toggle-line {
  display: block;
  width: 1.15rem;
  height: 1px;
  background: var(--color-ivory-glow);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.site-header.is-compact .site-header__bar {
  min-height: 3.5rem;
}

.site-header.is-compact .site-header__logo {
  width: 2.25rem;
  height: 2.25rem;
  flex-basis: 2.25rem;
}

.site-header.is-compact .site-header__brand-subtitle {
  display: none;
}

.site-header.is-compact .site-header__station {
  padding-top: 0.5rem;
}

@media (max-width: 1099px) {
  .site-header__bar {
    min-height: 4.5rem;
    justify-content: space-between;
  }

  .site-header__logo {
    width: 2.5rem;
    height: 2.5rem;
    flex-basis: 2.5rem;
  }

  .site-header__brand-name {
    font-size: 0.8rem;
  }



  .site-header__toggle {
    display: inline-flex;
    flex-direction: column;
  }

  .site-header__nav {
    position: absolute;
    top: calc(100% + 1px);
    right: max(1rem, calc((100vw - var(--container-max)) / 2));
    left: max(1rem, calc((100vw - var(--container-max)) / 2));
    display: grid;
    max-height: min(75vh, 42rem);
    overflow: auto;
    padding: 1rem;
    border: 1px solid var(--color-border-strong);
    border-radius: 0 0 var(--radius-md) var(--radius-md);
    background: rgb(10 13 28 / 98%);
    box-shadow: var(--shadow-soft);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-0.5rem);
    transition: opacity var(--transition-base), transform var(--transition-base);
  }

  .site-header__nav.is-open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .site-header__route {
    display: grid;
    justify-content: stretch;
    gap: 0;
  }

  .site-header__station,
  .site-header__station--mobile {
    display: block;
    padding: 0 0 0 1rem;
  }

  .site-header__station::before {
    top: 50%;
    left: 0;
    transform: translate(-50%, -50%);
  }

  .site-header__station:not(:last-child)::after {
    top: 50%;
    left: 0;
    width: 1px;
    height: calc(100% + 0.3rem);
    background: linear-gradient(var(--color-starlight-silver), rgb(78 217 232 / 25%));
  }

  .site-header__station a {
    padding: 0.7rem 0;
    font-size: 0.75rem;
  }

  .site-header__menu-cta {
    display: inline-flex;
    margin-top: 1rem;
    justify-self: start;
  }

  .site-header__toggle[aria-expanded="true"] .site-header__toggle-line:nth-child(1) {
    transform: translateY(0.39rem) 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: translateY(-0.39rem) rotate(-45deg);
  }
}

@media (max-width: 767px) {
  .site-header__shell {
    width: var(--container-width-mobile);
  }

  .site-header__bar {
    min-height: 4.5rem;
  }



  .site-header__logo {
    width: 2.35rem;
    height: 2.35rem;
    flex-basis: 2.35rem;
  }

  .site-header__nav {
    right: 1rem;
    left: 1rem;
  }
}