.site-header {
  position: fixed;
  top: 0;
  right: 0;
  left: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 74px;
  padding: 0 max(22px, 5vw);
  background: rgba(11, 16, 20, 0.86);
  border-bottom: 1px solid var(--border-dark);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  transition: background 0.2s ease, box-shadow 0.2s ease;
}

.site-header.is-scrolled {
  background: rgba(11, 16, 20, 0.94);
  box-shadow: 0 18px 50px rgba(5, 10, 14, 0.18);
}

.nav-logo {
  display: inline-flex;
  align-items: center;
  color: #fff;
  font-family: var(--font-display);
  font-size: 1.22rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  text-decoration: none;
}

.nav-logo img {
  display: block;
  width: auto;
  height: 34px;
}

.nav-logo-fallback em {
  color: var(--accent);
  font-style: normal;
}

.nav-logo-fallback {
  display: none;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 2vw, 1.8rem);
}

.nav-menu a {
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.86rem;
  font-weight: 700;
  text-decoration: none;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.nav-menu a:hover,
.nav-menu a:focus-visible {
  color: #fff;
}

.nav-cta {
  border: 1px solid rgba(118, 215, 196, 0.28);
  border-radius: 999px;
  background: rgba(14, 143, 149, 0.16);
  color: #fff !important;
  padding: 0.6rem 1rem;
}

.nav-toggle {
  display: none;
}

.split-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(280px, 0.8fr);
  gap: clamp(2rem, 6vw, 5rem);
  align-items: start;
}

footer {
  padding: 4.5rem 0 2.4rem;
  background: #071018;
  border-top: 1px solid var(--border-dark);
  color: #fff;
}

.footer-inner {
  display: grid;
  grid-template-columns: minmax(240px, 1.4fr) repeat(3, minmax(150px, 0.8fr));
  gap: clamp(1.8rem, 4vw, 4rem);
}

.footer-brand p {
  max-width: 340px;
  margin-top: 1rem;
  color: rgba(255, 255, 255, 0.64);
  font-size: 0.92rem;
}

.footer-col h4 {
  margin-bottom: 1rem;
  color: rgba(255, 255, 255, 0.42);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.footer-col ul {
  display: grid;
  gap: 0.65rem;
  list-style: none;
}

.footer-col a {
  color: rgba(255, 255, 255, 0.68);
  font-size: 0.9rem;
  text-decoration: none;
  transition: color 0.2s ease;
}

.footer-col a:hover {
  color: #fff;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 3rem;
  padding-top: 1.6rem;
  border-top: 1px solid var(--border-dark);
}

.footer-bottom p {
  color: rgba(255, 255, 255, 0.42);
  font-size: 0.8rem;
}