.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-nav);
}

.site-logo-mark {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: var(--radius-lg);
  background: radial-gradient(circle at 30% 0, rgba(245, 192, 79, 0.9), transparent 62%),
              radial-gradient(circle at 80% 100%, rgba(22, 199, 154, 0.7), transparent 60%),
              #050713;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.6);
}

.site-logo-icon {
  color: #050713;
  background: rgba(245, 248, 255, 0.95);
  width: 1.7rem;
  height: 1.7rem;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
}

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

.site-logo-name {
  font-size: 0.95rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.site-logo-tagline {
  font-size: 0.7rem;
  color: var(--color-text-soft);
}

.site-nav-wrapper {
  display: flex;
  align-items: center;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-5);
}

.site-nav-item a {
  font-size: 0.85rem;
  font-weight: 500;
}

.site-nav-cta a {
  font-size: 0.75rem;
}

.nav-toggle {
  display: none;
  position: relative;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border-strong);
  background: rgba(5, 7, 19, 0.9);
  padding: 0;
  align-items: center;
  justify-content: center;
}

.nav-toggle-bar {
  position: relative;
  width: 1.3rem;
  height: 2px;
  background-color: var(--color-neutral-200);
  border-radius: 999px;
  transition: transform var(--transition-fast), opacity var(--transition-fast), top var(--transition-fast), bottom var(--transition-fast);
}

.nav-toggle-bar + .nav-toggle-bar {
  margin-top: 4px;
}

.nav-toggle.is-active .nav-toggle-bar:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.nav-toggle.is-active .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle.is-active .nav-toggle-bar:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

@media (max-width: 960px) {
  .nav-toggle {
    display: inline-flex;
    flex-direction: column;
  }

  .site-nav-wrapper {
    position: absolute;
    inset-inline: 0;
    top: 4.25rem;
    background: radial-gradient(circle at top, rgba(245, 192, 79, 0.08), transparent 55%),
                rgba(5, 7, 19, 0.97);
    border-bottom: 1px solid rgba(42, 49, 85, 0.85);
    transform-origin: top;
    transform: scaleY(0.9);
    opacity: 0;
    visibility: hidden;
    max-height: 0;
    overflow: hidden;
    transition: opacity var(--transition-normal), transform var(--transition-normal), max-height var(--transition-normal), visibility var(--transition-normal);
  }

  .site-nav-wrapper.is-open {
    opacity: 1;
    visibility: visible;
    transform: scaleY(1);
    max-height: 22rem;
  }

  .site-nav {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-3);
    padding: var(--space-4) var(--container-padding-x) var(--space-6);
  }

  .site-nav-item a {
    width: 100%;
    padding-block: 0.2rem;
  }

  .site-nav-cta {
    padding-top: var(--space-2);
    width: 100%;
  }

  .site-nav-cta .btn {
    width: 100%;
    justify-content: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .site-nav-wrapper,
  .nav-toggle-bar {
    transition: none;
  }
}