.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: linear-gradient(to bottom, rgba(8, 10, 14, 0.96), rgba(8, 10, 14, 0.9));
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--color-border-subtle);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-3);
  padding-bottom: var(--space-3);
}

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

.site-header__logo-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-text);
}

.site-header__logo-mark {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 0%, rgba(212, 164, 90, 0.6), transparent 55%),
              #05060a;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-sm);
  color: var(--color-primary);
}

.site-header__logo-mark i {
  font-size: 1.1rem;
}

.site-header__logo-text {
  display: flex;
  flex-direction: column;
}

.site-header__logo-title {
  font-family: var(--font-serif-display);
  font-size: 1.1rem;
  letter-spacing: 0.04em;
}

.site-header__logo-subtitle {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--color-text-muted);
}

.site-header__nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.site-header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.site-header__nav-link {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  padding: 0.25rem 0;
  border-bottom: 2px solid transparent;
}

.site-header__nav-link:hover,
.site-header__nav-link:focus-visible {
  color: var(--color-primary);
  border-bottom-color: rgba(212, 164, 90, 0.6);
}

.site-header__cta-wrapper {
  margin-left: var(--space-4);
}

.site-header__cta {
  font-size: 0.75rem;
}

.site-header__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(255, 255, 255, 0.12);
  background-color: rgba(0, 0, 0, 0.35);
  color: var(--color-text);
}

.site-header__toggle-bar {
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background-color: var(--color-text);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.site-header__toggle:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.site-header__toggle.is-active .site-header__toggle-bar:first-child {
  transform: translateY(4px) rotate(45deg);
}

.site-header__toggle.is-active .site-header__toggle-bar:last-child {
  transform: translateY(-4px) rotate(-45deg);
}

@media (max-width: 900px) {
  .site-header__toggle {
    display: inline-flex;
  }

  .site-header__nav {
    position: absolute;
    inset-inline: 0;
    top: 100%;
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--color-border-subtle);
    box-shadow: var(--shadow-md);
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-4);
    padding: var(--space-4);
    max-height: 0;
    opacity: 0;
    visibility: hidden;
    overflow: hidden;
    transition: max-height var(--transition-slow), opacity var(--transition-base), visibility var(--transition-base);
  }

  .site-header__nav-list {
    flex-direction: column;
    align-items: flex-start;
    width: 100%;
  }

  .site-header__cta-wrapper {
    width: 100%;
  }

  .site-header__cta {
    width: 100%;
    justify-content: center;
  }

  .site-header__nav.is-open {
    max-height: 380px;
    opacity: 1;
    visibility: visible;
  }
}

@media (max-width: 520px) {
  .site-header__logo-subtitle {
    display: none;
  }
}