.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 1000;
  background: rgba(248,250,252,.88);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(228,231,236,.85);
  transition: transform .28s ease, box-shadow .28s ease;
}

.site-header.header-hidden {
  transform: translateY(-100%);
}

.site-header.header-shadow {
  box-shadow: 0 14px 40px rgba(7,18,31,.06);
}

.header-inner {
  min-height: 84px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.logo,
.footer-logo {
  font-family: "Space Grotesk", Inter, sans-serif;
  font-size: 25px;
  font-weight: 800;
  white-space: nowrap;
}

.logo span,
.footer-logo span {
  color: var(--blue);
}

.logo b,
.footer-logo b {
  color: var(--dark);
}

.footer-logo b {
  color: var(--white);
}

.main-nav {
  display: flex;
  gap: 26px;
  align-items: center;
}

.main-nav a {
  color: var(--muted);
  font-size: 14px;
  font-weight: 800;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--blue);
}

.header-tools {
  display: flex;
  align-items: center;
  gap: 14px;
}

.language-switch {
  display: flex;
  gap: 4px;
  padding: 5px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--white);
}

.language-switch a {
  padding: 7px 9px;
  border-radius: 999px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 900;
}

.header-cta {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  padding: 0 18px;
  border-radius: 999px;
  color: var(--white);
  background: var(--blue);
  font-size: 13px;
  font-weight: 900;
}

.menu-btn {
  display: none;
  width: 44px;
  height: 44px;
  border: 0;
  border-radius: 14px;
  background: var(--deep);
  cursor: pointer;
}

.menu-btn span {
  display: block;
  width: 19px;
  height: 2px;
  margin: 4px auto;
  background: var(--white);
}