The project had three major pain points before migration: legacy multi-layer nested layouts causing slow rendering; lack of dark mode support; missing accessibility labels preventing screen readers from reading key content.

Solution Review

• Rewrote chapter lists using `LazyColumn + stickyHeader` to improve pagination loading experience;
• Used `MaterialTheme` custom colors to ensure day/night mode contrast meets WCAG AA;
• Added accessibility information for 120+ key nodes through `Semantics` and `contentDescription`.

Results and Metrics

Within three weeks of completing the migration, course completion rate increased by 18% and average page rendering time decreased by 31%. More importantly, complaints from parents about accessibility experience dropped to single digits.