body{background:#f1f4f7}.reader-toolbar{position:sticky;top:55px;z-index:30;display:flex;align-items:center;gap:8px;padding:10px 24px;background:#f8fafceF;backdrop-filter:blur(12px);border-bottom:1px solid #dce5ec}.reader-toolbar button,#close-toc{padding:6px 13px;border:1px solid #d6e1e9;border-radius:5px;background:white;color:#264c63;font-size:14px;line-height:1.6}.reader-toolbar button:hover,#close-toc:hover{background:#e7f1f7}.reader-toolbar button:disabled{opacity:.4;cursor:default}.reader-toolbar #position{font-size:14px;min-width:140px;text-align:center;font-variant-numeric:tabular-nums}.reader-toolbar #mode{margin-left:auto}.slide-reader{max-width:1640px;margin:0 auto;padding:12px 24px 45px}.reader-hint{font-size:12px;color:#546e81;margin:3px 0 12px}.page{margin:0 0 30px;scroll-margin-top:125px}.page[hidden]{display:none}.slide-open{display:block;padding:0;border:0;background:white;width:100%;box-shadow:0 3px 20px #1e3b511a;line-height:0;border-radius:0;cursor:zoom-in}.slide-open img{display:block;width:100%;height:auto;aspect-ratio:16/9}.transcript{margin-top:12px;background:white;border-radius:5px;padding:10px 20px;font-size:15px}.transcript summary{cursor:pointer;color:#41637a;font-size:13px}.transcript p{white-space:pre-line;margin-top:15px}.transcript p:first-of-type{margin-top:22px}#course-toc{position:fixed;z-index:45;top:0;bottom:0;left:0;width:min(350px,90vw);padding:22px 18px;background:white;box-shadow:15px 0 45px #213c5230;overflow:auto}#course-toc[hidden]{display:none}#close-toc{margin-bottom:15px}#course-toc summary{cursor:pointer;font-size:15px;font-weight:650;padding:15px 6px;line-height:1.45}#course-toc a{display:block;text-decoration:none;font-size:13px;line-height:1.5;padding:9px 12px;color:#3d5a6e;border-radius:4px}#course-toc a[aria-current]{background:#e6f3fb;color:#006dab;font-weight:700}#course-toc a:hover{background:#f0f5f8}#slide-dialog{width:96vw;max-width:none;height:94dvh;max-height:none;margin:auto;padding:0;border:0;background:#172b3b;color:white;overflow:hidden;border-radius:7px}#slide-dialog::backdrop{background:#061420c9}.dialog-tools{display:flex;align-items:center;gap:14px;padding:10px 14px;min-height:58px}.dialog-tools button{border:0;border-radius:4px;padding:7px 12px;background:#eaf2f8;color:#12384e;font-size:14px;white-space:nowrap}#dialog-title{font-size:13px;line-height:1.3;overflow:hidden}#close-dialog{margin-left:auto}.slide-stage{height:calc(100% - 58px);width:100%;overflow:auto;display:flex;justify-content:center;align-items:center;padding:8px}.slide-stage img{max-width:100%;max-height:100%;width:auto;height:auto;object-fit:contain;display:block}.slide-stage.zoomed{display:block}.slide-stage.zoomed img{max-width:none;max-height:none;width:180%;min-width:1280px;height:auto}.skip{position:absolute;left:10px;top:-200px;z-index:70;background:white;padding:10px}.skip:focus{top:5px}
@media(max-width:700px){.reader-toolbar{top:0;position:sticky;padding:8px 10px;gap:6px;flex-wrap:wrap}.reader-toolbar button{font-size:12px;padding:5px 9px}.reader-toolbar #position{font-size:12px;min-width:116px}.reader-toolbar #mode{margin-left:0}.slide-reader{padding:8px 8px 28px}.reader-hint{padding:0 4px;margin:5px 0 10px;font-size:11px}.page{scroll-margin-top:95px}.transcript{padding:9px 13px}.dialog-tools{gap:8px;padding:8px}.dialog-tools button{font-size:12px;padding:7px 10px}#dialog-title{font-size:11px}#slide-dialog{width:98vw;height:96dvh}.dialog-tools{min-height:54px}.slide-stage{height:calc(100% - 54px);padding:3px}}
@media(min-width:701px){.slide-reader{max-width:min(1640px,calc((100dvh - 175px)*16/9 + 48px))}}
@media(max-height:550px) and (orientation:landscape){header.unified-header{position:relative!important}.reader-toolbar{top:0}.reader-hint{display:none}.slide-reader{padding-top:10px;max-width:calc((100dvh - 140px)*16/9 + 48px)}.page{scroll-margin-top:55px}#slide-dialog{width:99vw;height:98dvh}}