.course-card{border:1px solid #e4ebf3;border-radius:20px;overflow:hidden;background:#fff;cursor:pointer;transition:.2s ease;text-align:left;width:100%}.course-card:hover{transform:translateY(-3px);box-shadow:0 12px 30px rgba(16,35,63,.08);border-color:#cddcf0}.course-image{height:170px;background:linear-gradient(135deg,#edf4ff 0%,#f7fbff 100%);display:flex;align-items:center;justify-content:center;font-size:52px}.course-content{padding:18px}.course-title{font-size:20px;font-weight:700;color:#0d2e63;margin-bottom:6px;line-height:1.2;word-break:break-word}.course-desc{font-size:14px;color:#62738c;line-height:1.45;word-break:break-word}@media (max-width:768px){.course-image{height:118px;font-size:38px}.course-title{font-size:16px}.course-desc{font-size:13px}}@media (max-width:520px){.course-image{height:100px;font-size:34px}.course-content{padding:12px}.course-title{font-size:15px}.course-desc{font-size:12px;line-height:1.35}}