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70px}.lesson-breadcrumbs{margin-bottom:35px}.lesson-hero{margin-bottom:48px}.lesson-hero h1{font-size:42px}.lesson-hero>p{font-size:15px;line-height:1.7}.lesson-navigation,.lesson-sidebar{display:block}.lesson-nav-link{grid-template-columns:32px minmax(0,1fr)}.content-section{grid-template-columns:1fr;gap:10px;padding-bottom:40px;margin-bottom:40px}.content-section-number{font-size:10px}.content-section-body h2{font-size:24px}.content-section-body p{font-size:14px}.lesson-complete{align-items:flex-start;flex-direction:column;padding:23px 20px}.lesson-actions{width:100%}.lesson-action{flex:1}}@media (max-width:430px){.lesson-page{padding-left:13px;padding-right:13px}.lesson-hero h1{font-size:36px}.lesson-meta{align-items:flex-start;flex-direction:column}.lesson-meta span{width:100%}.lesson-actions{align-items:stretch;flex-direction:column}.lesson-action{width:100%}}@media (prefers-reduced-motion:reduce){.lesson-action,.lesson-breadcrumbs a,.lesson-nav-link{transition:none}.lesson-action:hover{transform:none}}