/* 全站课程大标题 · 无底色 + 黑字 + 主题强调色 */
.course-brand {
  margin: 0 0 1rem;
  padding: 0.35rem 0;
  font-family: "Noto Sans SC", "DM Sans", system-ui, sans-serif;
  font-size: clamp(1.75rem, 5.2vw, 2.75rem);
  font-weight: 800;
  letter-spacing: 0.03em;
  line-height: 1.3;
  text-align: center;
  background: transparent;
  border: none;
  box-shadow: none;
}

.course-brand__main {
  color: #000;
}

.course-brand__accent {
  color: var(--course-brand-accent, #1565c0);
}

.course-brand--compact {
  margin-bottom: 0.75rem;
}

.course-brand--topbar {
  margin: 0;
  padding: 0.65rem 1rem;
  background: transparent;
  position: sticky;
  top: 0;
  z-index: 200;
}

@media (max-width: 1024px) {
  .course-brand {
    font-size: clamp(1.5rem, 5.8vw, 2.05rem);
    margin-bottom: 0.7rem;
  }
}