/* Use the same PDF.js reader on desktop and mobile so visible pages are measurable. */
.lesson-body--pdf .pdf-frame-shell{display:none!important}
.lesson-body--pdf .pdf-mobile-reader{display:block!important;max-height:80vh;overflow:auto;overscroll-behavior:contain}
.lesson-body--pdf .pdf-mobile-pages{display:grid;gap:18px;justify-items:center}
.lesson-body--pdf .pdf-mobile-page{max-width:100%;background:#fff}
.lesson-body--pdf .pdf-mobile-page canvas{display:block;max-width:100%;height:auto}