.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 32px;
  height: 60px;
  background: rgba(0, 0, 0, 0.92);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.header-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.header-logo-text {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--accent);
  text-transform: uppercase;
}

.header-logo-sep {
  color: var(--border);
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.header-logo-sub {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

.header-nav a {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  transition: color var(--transition);
}

.header-nav a:hover {
  color: var(--accent);
}