.chapter-body>.lesson-area{display:contents}
.chapter-body .chapter-intro{grid-column:1;grid-row:1}
.chapter-body>.chapter-guide{grid-column:2;grid-row:1}
.chapter-body .chapter-topics{grid-column:1/-1;grid-row:2;min-width:0}
.lesson-layout{display:grid;grid-template-columns:minmax(0,1fr) 250px;gap:24px}
.lesson-media{min-width:0}
.lesson-media>.player-heading{margin-top:18px}
.lesson-guide{padding-top:18px;min-width:0}
.lesson-guide .eyebrow{font-size:9px;letter-spacing:1.5px;margin:0 0 12px;line-height:1.7}
.lesson-description{font-size:13px;line-height:1.75;color:var(--muted)}
.lesson-guide .practice-card{margin-top:17px}
.lesson-guide .practice-card h4{font-size:12px;line-height:1.5;margin:0 0 6px}
@media(max-width:900px){.lesson-layout{grid-template-columns:1fr;gap:0}.lesson-guide{padding-top:20px}.lesson-guide .practice-card{max-width:100%}}
@media(max-width:760px){.chapter-body .chapter-intro{grid-column:1;grid-row:1}.chapter-body>.chapter-guide{grid-column:1;grid-row:2}.chapter-body .chapter-topics{grid-column:1;grid-row:3}.lesson-description{font-size:14px}.lesson-guide .practice-card h4{font-size:13px}}