.ros-course-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1.25rem 0 2rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid #d9e3e6;
}

.ros-course-nav a {
  display: inline-block;
  padding: 0.45rem 0.75rem;
  border: 1px solid #d9e3e6;
  border-radius: 0.4rem;
  text-decoration: none;
}

.ros-course-nav a[aria-current="page"] {
  color: #fff;
  background: #176577;
  border-color: #176577;
}

.ros-course-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 1rem;
  margin: 1.5rem 0;
}

.ros-course-card {
  padding: 1rem;
  border: 1px solid #d9e3e6;
  border-radius: 0.6rem;
  background: #f7fafb;
}

.ros-course-card strong {
  display: block;
  margin-bottom: 0.3rem;
}

.ros-course-card p {
  margin: 0.35rem 0 0;
}

.ros-course-note {
  margin: 1.5rem 0;
  padding: 1rem 1.25rem;
  border-left: 4px solid #176577;
  background: #f1f7f8;
}

.ros-course-note p:last-child {
  margin-bottom: 0;
}