.course-hero-cover{background:var(--color-bg-dark);border-radius:1.25rem;overflow:hidden;box-shadow:var(--shadow-lift)}.course-hero-cover img{object-fit:cover}.lesson-row-details>summary{list-style:none;cursor:pointer;transition:background-color .15s ease}.lesson-row-details>summary::marker,.lesson-row-details>summary::-webkit-details-marker{display:none}.lesson-row-details>summary:hover{background-color:color-mix(in srgb,var(--color-primary) 6%,transparent)}.lesson-row-details+.lesson-row-details{border-top:1px solid var(--color-border)}.dark .lesson-row-details+.lesson-row-details{border-top-color:#ffffff14}[data-chevron]{transition:transform .2s ease}.lesson-row-details[open]>summary [data-chevron]{transform:rotate(180deg)}.feature-row+.feature-row{border-top:1px solid var(--color-border)}.dark .feature-row+.feature-row{border-top-color:#ffffff14}