.page-banner {
  width: 100%;
  background: url('/ver2/images/lesson/course-topic-banner.png') center center / cover no-repeat;
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
  /* margin-top: 60px; 確保不會被 navbar 遮住 */
}

.page-banner-inner {
  color: white;
  font-size: 36px;
  font-weight: bold;
  padding: 20px;
}

/* 導覽列 + 頁面標題 */
.breadcrumb {
  background: #f9f9f9;
  padding: 10px 20px;
  font-size: 14px;
  color: #333;
}

.breadcrumb a {
  color: #333;
  text-decoration: none;
}

.breadcrumb-tag {
  background: #999;
  color: white;
  padding: 2px 8px;
  border-radius: 4px;
}

.page-title {
  background: #cbe8f0;
  text-align: center;
  padding: 20px 0;
}

.page-title h2 {
  font-size: 24px;
  color: #2b5b9a;
  font-weight: bold;
  margin: 0;
}

@media (min-width: 769px) {
  .page-banner {
    height: 300px;
  }
}

@media (max-width: 768px) {
  .page-banner {
    height: 110px;
  }

  .page-banner-inner {
    font-size: 20px;
  }
}