.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  width: 144px;
  height: 36px;
  flex: 0 0 auto;
  font: 700 24px/1 system-ui, sans-serif;
}

.brand-mark {
  display: block;
  min-width: 0;
  height: 100%;
  flex: 1 1 auto;
  object-fit: contain;
}

.brand-live {
  color: #fff;
  background: #ed1d24;
  padding: 0.16em 0.25em;
  border-radius: 0.16em;
  flex: 0 0 auto;
}

.auth-brand .brand-logo {
  width: min(320px, 100%);
  height: auto;
  aspect-ratio: 4 / 1;
  font-size: clamp(24px, 8vw, 52px);
  margin: 0 auto;
}

@media (max-width: 640px) {
  .brand-logo { width: 112px; height: 28px; font-size: 18px; }
  .header { flex-wrap: wrap; gap: 8px; }
}