.course-quick-nav {
  position: fixed;
  bottom: 18px;
  left: 18px;
  z-index: 100;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.course-quick-nav a {
  padding: 9px 14px;
  border: 1px solid rgba(111, 32, 31, 0.18);
  border-radius: 999px;
  color: #6f201f;
  background: rgba(255, 249, 239, 0.94);
  box-shadow: 0 8px 24px rgba(72, 37, 26, 0.16);
  font-size: 12px;
  font-weight: 700;
  text-decoration: none;
  backdrop-filter: blur(10px);
}

.course-quick-nav a.is-next {
  color: #fff9ef;
  background: #4f6d3a;
}