.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(249, 247, 244, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition);
}

.header--scrolled {
  border-bottom-color: var(--color-border);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
}

.logo__mark {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--color-accent);
}

.logo__text {
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav__link {
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  color: var(--color-text-muted);
  transition: color var(--transition);
}

.nav__link:hover {
  color: var(--color-text);
}

.nav__link--cta {
  color: var(--color-text);
  padding: 0.55rem 1.2rem;
  border: 1px solid var(--color-text);
  transition: background var(--transition), color var(--transition);
}

.nav__link--cta:hover {
  background: var(--color-text);
  color: var(--color-bg);
}

.burger {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.burger span {
  display: block;
  width: 22px;
  height: 1px;
  background: var(--color-text);
  transition: transform var(--transition);
}

@media (max-width: 860px) {
  .burger { display: flex; }

  .nav {
    position: fixed;
    inset: var(--header-h) 0 0 0;
    flex-direction: column;
    justify-content: center;
    gap: 2.5rem;
    background: var(--color-bg);
    transform: translateX(100%);
    transition: transform var(--transition);
  }

  .nav--open { transform: translateX(0); }

  .nav__link { font-size: 1rem; }
}