/* PPT_READER_20260920 */
:root{--bg:#f7f8fa;--surface:#fff;--text:#182c38;--muted:#586976;--line:#d8e2e7;--green:#176f56;--soft:#eaf5ef;--radius:12px;--gap:16px;--font:15px;--touch:44px;font-family:MiSans,"Microsoft YaHei",sans-serif;color:var(--text);background:var(--bg);font-size:var(--font)}*{box-sizing:border-box}body{margin:0}button,select,a{font:inherit}button,select,.link{min-height:var(--touch);border:1px solid var(--line);border-radius:8px;background:var(--surface);color:var(--text);padding:10px 16px}a{color:var(--green);text-decoration:none}button,a,select{touch-action:manipulation}button{cursor:pointer}button:disabled{opacity:.4;cursor:default}button:hover:not(:disabled),.link:hover{background:var(--soft)}:focus-visible{outline:2px solid var(--green);outline-offset:3px}.reader{--reader-max:1040px;--reader-min:700px;--reader-reserve:320px;--reader-padding:48px;max-width:var(--reader-max);margin:auto;padding:20px 24px}.top{display:flex;justify-content:space-between;align-items:center;gap:var(--gap);margin-bottom:20px}.brand{color:var(--muted);font-size:13px;margin:0 0 8px}h1{font-size:26px;font-weight:600;margin:0}.actions{display:flex;gap:10px;flex-wrap:wrap}.primary{background:var(--green);color:#fff;border-color:var(--green)}.primary:hover{color:var(--green)}.toolbar{display:flex;justify-content:space-between;align-items:center;gap:var(--gap);margin:0 0 12px}.chapter{display:flex;align-items:center;gap:10px}select{max-width:100%}.muted{color:var(--muted);font-size:13px}.stage{background:#e9eef2;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;position:relative;min-height:200px}.stage img{display:block;width:100%;height:auto;aspect-ratio:16/9;object-fit:contain;background:var(--surface)}.stage.loading img{opacity:.4}.status{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;gap:12px;background:var(--surface);color:var(--muted)}[hidden]{display:none!important}.bottom{display:flex;justify-content:space-between;align-items:center;gap:var(--gap);padding:16px 0}.paging{display:flex;align-items:center;gap:12px}.count{min-width:80px;text-align:center;font-variant-numeric:tabular-nums}.caption{margin:0;color:var(--muted);font-size:14px}dialog{width:96vw;max-width:1700px;height:94vh;padding:16px;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface)}dialog::backdrop{background:#13232dcc}.zoom-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.zoom-scroll{overflow:auto;height:calc(100% - 60px)}.zoom-scroll img{display:block;width:1600px;max-width:none}.error{color:#a43434}footer{font-size:13px;color:var(--muted);padding-top:12px;border-top:1px solid var(--line)}/* PPT_READER_COMPACT_20260920 */
@media(min-width:701px){.reader{width:min(100%,max(var(--reader-min),calc((100svh - var(--reader-reserve))*16/9 + var(--reader-padding))))}}@media(max-width:700px){.reader{padding:16px 12px}.top{align-items:flex-start;flex-direction:column;gap:12px}h1{font-size:22px}.actions{width:100%}.actions a{flex:1;text-align:center}.toolbar{align-items:flex-start;flex-wrap:wrap}.chapter{width:100%}.chapter select{flex:1;min-width:0}.stage{min-height:0}.bottom{flex-wrap:wrap;justify-content:center}.paging{width:100%;justify-content:space-between}.caption{width:100%;text-align:center}.status{font-size:13px}.zoom-scroll img{width:1600px}}