.course-card {
  width: 100%;
  max-width: 420px;
  margin-top: 40px;
  padding: 32px 24px;
  border-radius: 20px;
  background: #fff;
  text-align: center;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
}
.course-label { color: #764ba2; font-size: 14px; font-weight: 600; }
.course-card h1 { margin-top: 10px; color: #222; font-size: 26px; }
.course-intro { margin-top: 14px; color: #666; font-size: 14px; line-height: 1.8; }
.course-qr { max-width: 320px; margin: 22px auto; padding: 12px; background: #fff; }
.course-qr img { display: block; width: 100%; height: auto; }
.course-help { color: #666; font-size: 14px; line-height: 1.8; }
.course-save {
  display: inline-block;
  margin-top: 20px;
  padding: 12px 24px;
  border-radius: 12px;
  background: #667eea;
  color: #fff;
  font-size: 15px;
  text-decoration: none;
}
.course-save:focus-visible { outline: 3px solid #222; outline-offset: 4px; }
.course-contact { margin-top: 22px; color: #888; font-size: 12px; line-height: 1.8; }
@media (max-width: 360px) {
  .course-card { margin-top: 16px; padding: 28px 16px; }
  .course-card h1 { font-size: 23px; }
}