.lesson-navigation{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin:40px 0;padding-top:28px;border-top:1px solid #ddd}.lesson-nav-card{display:flex;align-items:center;gap:14px;padding:14px;border:1px solid #ddd;border-radius:6px;text-decoration:none!important;color:#333;background:#fff}.lesson-nav-card:hover{border-color:#007bbd;background:#f7fbfd}.lesson-nav-card img{width:38%;height:auto;aspect-ratio:16/9;object-fit:contain}.lesson-nav-card span{min-width:0}.lesson-nav-card small{display:block;color:#626262;font-size:12px;margin-bottom:6px}.lesson-nav-card strong{display:block;font-size:15px;line-height:1.65}.lesson-thumbnail{margin:0 0 28px}.lesson-thumbnail img{display:block;width:100%;height:auto}@media(max-width:640px){.lesson-navigation{grid-template-columns:1fr;gap:14px}.lesson-nav-card{padding:12px}}