.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 40;
  backdrop-filter: blur(14px);
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.site-header.is-scrolled {
  border-bottom-color: var(--line);
  background: color-mix(in srgb, var(--bg-elevated) 86%, transparent);
}

.site-header .inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 4rem;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  font-family: "Syne", sans-serif;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.brand-mark img {
  width: 2.35rem;
  height: 2.35rem;
  object-fit: contain;
}

.brand-mark span {
  font-size: 0.95rem;
}

.nav-desk {
  display: flex;
  align-items: center;
  gap: 1.35rem;
}

.nav-desk a {
  text-decoration: none;
  color: var(--text-soft);
  font-weight: 500;
  font-size: 0.95rem;
}

.nav-desk a:hover {
  color: var(--brand);
}

.header-tools {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.icon-btn,
.lang-select {
  border: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg-elevated) 70%, transparent);
  color: var(--text);
  border-radius: 0.55rem;
  height: 2.35rem;
}

.icon-btn {
  width: 2.35rem;
  display: inline-grid;
  place-items: center;
  cursor: pointer;
}

.icon-btn svg {
  width: 1.1rem;
  height: 1.1rem;
}

.lang-select {
  padding: 0 0.55rem;
  font: inherit;
  font-size: 0.85rem;
}