.course-detail-page{padding-top:90px;background:#f4f7fb;min-height:100vh}.course-header{background:linear-gradient(135deg,#0a1e3c,#163d6b);color:#ffffff;padding:60px 20px;text-align:center}.course-header h1{font-size:clamp(1.8rem,3.5vw,2.6rem);margin-bottom:10px}.course-header p{opacity:.9;font-size:1rem}.course-container{max-width:1000px;margin:auto;padding:50px 20px;display:flex;flex-direction:column;gap:30px}.info-card{background:#ffffff;border-radius:14px;padding:26px 30px;box-shadow:0 10px 30px rgba(0,0,0,.08)}.info-card h3{color:#0a1e3c;margin-bottom:12px}.info-card p{color:#4b627e;line-height:1.7;font-size:.95rem}.info-card ul{padding-left:18px}.info-card li{margin-bottom:10px;color:#4b627e;font-size:.95rem}.info-card.highlight{background:linear-gradient(135deg,#eaf1ff,#f8fbff);border-left:5px solid #0a1e3c}.back-btn{align-self:flex-start;background:rgba(255,255,255,.15);color:#ffffff;border:none;padding:8px 14px;border-radius:8px;cursor:pointer;font-size:.9rem;margin-bottom:15px}.back-btn:hover{background:rgba(255,255,255,.25)}@media (max-width:768px){.course-header{padding:40px 15px}.course-container{padding:35px 15px}.info-card{padding:20px}}