body {
  margin: 0;
  background: #eef2ff;
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
}

.course-card {
  width: 360px;
  margin: 56px auto;
  padding: 28px;
  border: 1px solid #c7d2fe;
  border-radius: 20px;
  background: #ffffff;
  box-shadow: 0 16px 40px rgba(37, 99, 235, 0.12);
}

.tag {
  display: inline-block;
  margin: 0;
  padding: 6px 12px;
  border-radius: 999px;
  background: #dbeafe;
  color: #1d4ed8;
}

.actions {
  margin-top: 24px;
}

a {
  display: inline-block;
  padding: 10px 18px;
  border-radius: 10px;
  background: #1d4ed8;
  color: #ffffff;
  text-decoration: none;
}