.site-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  width: 100%;
  padding-block: var(--space-2);
  background: rgba(14, 14, 18, 0.6);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: background 200ms ease, border-color 200ms ease;
}
.site-nav.is-scrolled {
  background: rgba(14, 14, 18, 0.92);
  border-bottom-color: var(--color-border);
}

.site-nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.site-nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-5);
}
.site-nav__link {
  font: 500 16px/1 var(--font-sans);
  color: var(--color-text-muted);
  padding: var(--space-1) 0;
  position: relative;
  transition: color 180ms ease;
}
.site-nav__link:hover,
.site-nav__link.is-active { color: var(--color-text); }
.site-nav__link.is-active::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -4px;
  height: 2px;
  background: var(--color-brand);
}

.site-nav__toggle {
  display: none;
  width: 44px; height: 44px;
  align-items: center;
  justify-content: center;
  color: var(--color-text);
}
.site-nav__toggle svg { width: 24px; height: 24px; }

@media (max-width: 1023px) {
  .site-nav__links { display: none; }
  .site-nav__cta { display: none; }
  .site-nav__toggle { display: inline-flex; }
}

.mobile-drawer {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(14, 14, 18, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  display: flex;
  flex-direction: column;
  padding: var(--space-4);
  transform: translateX(100%);
  transition: transform 240ms ease;
  visibility: hidden;
}
.mobile-drawer.is-open {
  transform: translateX(0);
  visibility: visible;
}
.mobile-drawer__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-6);
}
.mobile-drawer__close {
  width: 44px; height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text);
}
.mobile-drawer__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.mobile-drawer__link {
  font: 500 24px/1.2 var(--font-sans);
  color: var(--color-text);
  padding: var(--space-2) 0;
  border-bottom: 1px solid var(--color-border);
}
.mobile-drawer__cta {
  margin-top: var(--space-5);
}