.isaac-merged-page .product-section-heading {
  box-sizing: border-box;
  width: 100%;
  padding: clamp(48px, 7vw, 90px) clamp(24px, 5vw, 84px);
  background: #0b0b0b;
  color: #f7f7f7;
  border-bottom: 1px solid #303030;
  font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

.isaac-merged-page .product-section-heading h2 {
  max-width: 1120px;
  margin: 0 0 16px;
  font-size: clamp(30px, 4.2vw, 58px);
  font-weight: 600;
  line-height: 1.18;
  letter-spacing: -.035em;
}

.isaac-merged-page .product-section-heading p {
  max-width: 760px;
  margin: 0;
  color: #b9b9b9;
  font-size: clamp(15px, 1.6vw, 20px);
  line-height: 1.75;
}

.isaac-merged-page .course-topic {
  cursor: default;
}

@media (max-width: 760px) {
  .isaac-merged-page .product-section-heading { padding: 44px 20px; }
}