.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(22px);
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.96), rgba(0, 0, 0, 0.88));
  border-bottom: 1px solid rgba(195, 255, 47, 0.2);
}
.site-header-inner {
  max-width: var(--layout-max-width);
  margin-inline: auto;
  padding: 0.75rem var(--space-4);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}
.brand {
  display: inline-flex;
  flex-direction: column;
  gap: 0.1rem;
}
.brand-primary {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
.brand-accent {
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-primary);
}
.nav-primary {
  display: none;
}
.nav-primary-list {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  font-size: var(--text-sm);
}
.nav-link {
  position: relative;
  padding-block: 0.25rem;
  color: var(--color-text-muted);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-size: 0.75rem;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 1px;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(195, 255, 47, 1), rgba(195, 255, 47, 0));
  transition: width var(--transition-normal);
}
.nav-link:hover {
  color: var(--color-neutral-100);
}
.nav-link:hover::after {
  width: 100%;
}
.nav-link-active {
  color: var(--color-neutral-100);
}
.nav-link-active::after {
  width: 100%;
}
.nav-cta {
  display: none;
}
.nav-cta .btn.btn-small {
  padding: 0.55rem 1.3rem;
  font-size: 0.75rem;
}
.nav-toggle {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  gap: 0.22rem;
  border-radius: 999px;
  border: 1px solid rgba(195, 255, 47, 0.6);
  background: rgba(7, 9, 14, 0.96);
}
.nav-toggle span {
  display: block;
  width: 1.25rem;
  height: 2px;
  border-radius: 999px;
  background: var(--color-neutral-100);
  transition: transform var(--transition-fast), opacity var(--transition-fast), width var(--transition-fast);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(4px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
  width: 0;
}
.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-4px) rotate(-45deg);
}
.nav-drawer {
  display: none;
}
.nav-drawer.is-open {
  display: block;
}
.nav-primary-mobile {
  padding: var(--space-3) var(--space-4) var(--space-4);
}
.nav-primary-list-mobile {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}
.nav-link-mobile {
  display: block;
  padding-block: 0.55rem;
  font-size: 0.8rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}
.nav-link-mobile:hover {
  color: var(--color-primary);
}
@media (max-width: 767px) {
  .nav-drawer {
    position: fixed;
    inset: 3.6rem 0 auto;
    background: rgba(3, 5, 10, 0.98);
    border-bottom: 1px solid rgba(195, 255, 47, 0.18);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.9);
  }
}
@media (min-width: 768px) {
  .site-header-inner {
    padding-inline: 0;
  }
  .nav-toggle {
    display: none;
  }
  .nav-primary {
    display: flex;
    align-items: center;
  }
  .nav-cta {
    display: inline-flex;
  }
}
@media (min-width: 1024px) {
  .nav-primary-list {
    gap: var(--space-5);
  }
}