.study-lesson{display:flex;flex-direction:column;gap:.6rem;padding:1.1rem;border:1px solid #c7d9dc;border-left:5px solid #0e6b6b;border-radius:8px;background:#f5fafa;text-decoration:none;color:#173646;min-width:0}
.study-lesson strong{font-size:1.1rem;line-height:1.4}.study-lesson span{line-height:1.55;color:#415c6b}.study-lesson:hover,.study-lesson:focus-visible{background:#e4f2f0;outline:2px solid #0e6b6b;outline-offset:2px}
.acls-rhythm-gallery .lesson-section,.acls-study-cases .lesson-section{padding:1rem;margin:1rem 0;border:1px solid #ccdadd;border-radius:8px;break-inside:avoid;background:#fff}
.acls-rhythm-gallery figure{margin:1rem 0}.acls-rhythm-gallery svg{display:block;width:100%;height:auto;min-height:78px;max-height:180px;background:#f2f8f5}
.acls-rhythm-gallery figcaption{font-size:.85rem;color:#4e6570;margin-top:.4rem}.acls-rhythm-gallery summary,.acls-study-cases summary{cursor:pointer;padding:.75rem;background:#edf5f5;border-radius:5px;font-weight:700;line-height:1.5}.acls-study-cases p,.acls-rhythm-gallery p{line-height:1.65}
@media print{.study-lesson{color:#000;background:#fff;break-inside:avoid}.acls-rhythm-gallery svg{max-height:110px}.acls-study-cases .lesson-section,.acls-rhythm-gallery .lesson-section{box-shadow:none}}