.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  height: var(--nav-height);
  background: var(--c-header);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--c-border-subtle);
  box-shadow: 0 4px 24px rgba(8, 28, 48, 0.12);
  border-bottom-color: var(--c-white-line);
}
.site-header.scrolled { background: var(--c-header-scrolled); border-bottom-color: var(--c-border); }
.header-inner {
  max-width: var(--max-width); margin: 0 auto; padding: 0 20px;
  height: 100%; display: flex; align-items: center; gap: 16px;
}
.logo { flex-shrink: 0; display: flex; align-items: center; min-width: 0; }
.logo .logo-img--on-light,
.logo .logo-img--on-dark { height: 38px; max-width: min(200px, 38vw); }
@media (min-width: 1024px) {
  .logo .logo-img--on-light,
  .logo .logo-img--on-dark { height: 42px; max-width: 220px; }
}
.primary-nav { flex: 1; min-width: 0; display: none; }
@media (min-width: 1024px) { .primary-nav { display: block; } }
.nav-list {
  display: flex; align-items: center; list-style: none; margin: 0; padding: 0;
  gap: 2px; flex-wrap: nowrap; white-space: nowrap; justify-content: center;
}
.nav-link {
  font-size: 13px; font-weight: 500; color: var(--c-text-2);
  text-decoration: none; padding: 6px 10px; border-radius: var(--r-sm);
  transition: color var(--t-fast), background var(--t-fast);
}
.nav-link:hover, .nav-link.active { color: var(--c-teal); background: var(--c-teal-glow); }
.header-ctas { display: none; align-items: center; gap: 8px; flex-shrink: 0; }
@media (min-width: 1024px) { .header-ctas { display: flex; } }
.hamburger {
  display: flex; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer; padding: 8px; margin-left: auto;
}
@media (min-width: 1024px) { .hamburger { display: none; } }
.hamburger span {
  display: block; width: 24px; height: 2px; background: var(--c-text); border-radius: 2px;
  transition: all var(--t-normal);
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-nav-overlay {
  display: none; position: fixed; inset: 0; top: var(--nav-height);
  background: var(--c-bg); z-index: 999; align-items: center; justify-content: center;
  opacity: 0; transition: opacity var(--t-normal);
}
.mobile-nav-overlay.open { display: flex; opacity: 1; }
.mobile-nav-list { list-style: none; text-align: center; padding: 0; margin: 0 0 40px; }
.mobile-nav-list a {
  font-family: var(--font-display); font-size: 28px; font-weight: 600;
  color: var(--c-text-2); text-decoration: none; text-transform: uppercase;
}
.mobile-nav-list a:hover { color: var(--c-teal); }
.mobile-nav-ctas { display: flex; flex-direction: column; gap: 12px; width: 260px; }