.reader-lecture-buttons{display:inline-flex;flex-wrap:wrap;gap:6px;margin:6px 0;white-space:normal}
.reader-lecture-buttons button,#readerLecture .reader-lecture-bar button,#readerLecture .reader-lecture-status button{font:inherit;min-height:44px;padding:8px 12px;border:1px solid #94a3b8;border-radius:10px;background:#fff;color:#1e3a8a;cursor:pointer;white-space:normal}
.reader-lecture-buttons button{font-size:14px;font-weight:700}
#readerLecture{position:fixed;inset:0;z-index:10000;background:#f8fafc;color:#172033;display:flex;flex-direction:column;overflow:hidden;padding-top:env(safe-area-inset-top);padding-bottom:env(safe-area-inset-bottom)}
#readerLecture .reader-lecture-bar{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:10px 12px;background:#fff;border-bottom:1px solid #cbd5e1;flex-shrink:0}
#readerLecture .reader-lecture-bar strong{font-size:14px;flex:1;min-width:120px}
#readerLecture nav{display:flex;gap:8px}
#readerLecture button[aria-pressed=true]{background:#1d4ed8;color:#fff;border-color:#1d4ed8}
#readerLecture button:focus-visible,.reader-lecture-buttons button:focus-visible{outline:3px solid #2563eb;outline-offset:2px}
#readerLecture .reader-lecture-status{padding:20px;overflow:auto;line-height:1.7}
#readerLecture .reader-lecture-status>button{margin:12px 8px 0 0}
#readerLecture .reader-lecture-choices{display:grid;gap:12px;margin-top:16px}
#readerLecture .reader-lecture-choices button{text-align:left}
#readerLecture #explainStage{flex:1;min-height:0;width:100%;margin:0;overflow:auto}
#readerLecture [hidden]{display:none!important}
.reader-lecture-open #rdReader,.reader-lecture-open #studyHeadV2{display:none!important}
@media(max-width:600px){#readerLecture nav{width:100%}#readerLecture nav button{flex:1}#readerLecture .reader-lecture-bar{gap:6px;padding:8px}}