.site-header {
  position: sticky; top: 0; z-index: 40;
  background: rgba(5,20,36,0.92);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(8px);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; min-height: 64px;
}
.brand {
  display: inline-flex; align-items: center; gap: 0.55rem;
  font-family: var(--font-display); font-weight: 700; color: #fff;
  letter-spacing: 0.04em; font-size: 0.92rem;
}
.brand-mark {
  width: 18px; height: 18px;
  background: linear-gradient(135deg, var(--accent), var(--accent-soft));
  clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%);
}
.nav { display: flex; gap: 1.25rem; flex-wrap: wrap; }
.nav a { color: var(--muted); font-size: 0.88rem; font-family: var(--font-display); }
.nav a:hover { color: #fff; }
.site-footer {
  border-top: 1px solid var(--border);
  padding: 1.5rem 0 2rem;
  background: #030f1b;
}
.footer-inner {
  display: flex; flex-wrap: wrap; gap: 1rem;
  justify-content: space-between; align-items: center;
}
.footer-copy { color: var(--muted); font-size: 0.78rem; margin: 0; }
.footer-links { display: flex; flex-wrap: wrap; gap: 1rem; }
.footer-links a { color: var(--muted); font-size: 0.78rem; font-family: var(--font-display); }
@media (max-width: 820px) {
  .nav { display: none; }
}