.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 40;
  height: var(--header-h);
  display: flex;
  align-items: center;
  border-bottom: 1px solid transparent;
  transition: background 0.35s ease, border-color 0.35s ease;
}

.site-header.is-scrolled,
.site-header.is-open {
  background: rgba(12, 13, 15, 0.92);
  backdrop-filter: blur(16px);
  border-bottom-color: var(--line);
}

.header-inner {
  width: min(calc(100% - 2.5rem), var(--wrap));
  margin-inline: auto;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 1.2rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--fog);
}

.brand-mark {
  width: 28px;
  height: 28px;
}

.brand-name {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.brand-tld {
  color: var(--muted);
  font-weight: 500;
}

.nav {
  justify-self: center;
}

.nav-list {
  display: flex;
  gap: 1.6rem;
}

.nav-link {
  color: var(--muted);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.nav-link:hover,
.nav-link.is-active {
  color: var(--fog);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  color: var(--fog);
}

.menu-toggle span,
.menu-toggle span::before,
.menu-toggle span::after {
  display: block;
  width: 18px;
  height: 1.5px;
  background: currentColor;
  position: relative;
  margin-inline: auto;
}

.menu-toggle span::before,
.menu-toggle span::after {
  content: "";
  position: absolute;
  left: 0;
}

.menu-toggle span::before { top: -6px; }
.menu-toggle span::after { top: 6px; }