.book-layout{display:grid;grid-template-columns:minmax(220px,280px) minmax(0,1fr);gap:30px;align-items:start;margin-top:24px}.book-index{position:sticky;top:20px;max-height:84vh;overflow:auto;padding:20px}.book-index form{display:grid;gap:8px}.book-search-row{display:grid;gap:8px}.book-search-row input{min-width:0;width:100%}.book-chapter-list{border:0;background:none;padding:0;margin-top:22px}.book-chapter-list summary{font-weight:700;color:#164f67}.book-chapters{list-style:none;margin:12px 0 0;padding:0}.book-chapters li{border-top:1px solid #e2e8f0;padding:11px 0;font-size:14px;line-height:1.5}.book-chapters a{display:block;overflow-wrap:anywhere;text-decoration:none}.book-chapters a[aria-current=page]{font-weight:800;border-left:3px solid #0783a0;padding-left:10px;color:#065d78}.book-document{min-width:0;max-width:900px}.book-reader .guide-reader-language{flex-shrink:0}.book-reader .guide-toolbar{flex-wrap:wrap;align-items:center}.book-library{margin-top:28px}.book-library-actions{display:grid;justify-items:start;gap:10px}.book-library-actions small{margin-bottom:16px;color:#526a7c}.book-download{border:0;padding:0;margin:0 0 0 auto;position:relative;font-size:14px}.book-download summary{cursor:pointer;color:#36647c}.book-download a{display:block;padding:12px;background:#fff;border:1px solid #cbd8e2;border-radius:8px;margin-top:8px}.native-reading-heading{padding:2px 4px 24px}.native-reading-heading h2{font-size:clamp(22px,2.5vw,30px);line-height:1.35;margin:8px 0 18px}.native-reading-meta{display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px;color:#5d7383;font-size:12px}.native-prose{font:18px/1.85 Georgia,'Times New Roman',serif;color:#263849;min-width:0}.native-book-page{padding:30px 38px;background:#fff;border:1px solid #d9e3eb;border-radius:12px;margin-bottom:20px;overflow-wrap:anywhere;scroll-margin-top:20px}.native-page-label{font:600 11px/1.5 system-ui,sans-serif;text-transform:uppercase;letter-spacing:.07em;color:#7b8c98;border-bottom:1px solid #e4ebef;padding-bottom:12px;margin-bottom:22px}.native-prose p{margin:.7em 0 1em}.native-prose h3{font:700 1.22em/1.4 system-ui,sans-serif;color:#154d66;margin:1.5em 0 .8em}.native-prose ul{padding-left:1.4em}.native-prose li{margin:.45em 0}.native-prose pre{font:14px/1.65 Consolas,monospace;white-space:pre;overflow:auto;max-width:100%;background:#102b3b;color:#f1f7fb;border-radius:9px;padding:18px;overflow-wrap:normal;tab-size:4}.native-figure{margin:1.6em 0;padding:12px;border:1px solid #e1e9ed;border-radius:10px;background:white}.native-figure img{display:block;width:auto;max-width:100%;height:auto;margin:auto}.native-figure figcaption{font:12px/1.5 system-ui,sans-serif;color:#617e90;text-align:center;margin-top:10px}.native-caption{font:600 .85em/1.6 system-ui,sans-serif;color:#24556d}.native-reading-controls{display:flex;flex-wrap:wrap;gap:12px;align-items:center;padding:6px 0 20px}.native-reading-controls p{width:100%;margin:0;color:#577282}.native-reading-controls [hidden]{display:none}.native-page-jump{display:flex;align-items:end;gap:12px;padding:20px;background:#eaf2f6;border-radius:12px}.native-page-jump label{font-size:12px;max-width:240px}.native-page-jump input{max-width:150px}.book-search-results ol{list-style:none;padding:0}.book-search-results li{padding:20px 0;border-bottom:1px solid #e1e9ef}.book-search-results li a{display:grid;gap:8px;text-decoration:none}.book-search-results li span{color:#41596b;line-height:1.7}.book-search-results li small{color:#14718b}.guide-dialog .book-layout{gap:22px}.guide-dialog .native-book-page{padding:24px}.book-reader [hidden]{display:none!important}@media(max-width:900px){.book-layout{grid-template-columns:1fr;gap:22px}.book-index{position:static;max-height:none}.book-chapter-list[open]{max-height:300px;overflow:auto}.book-search-row{grid-template-columns:minmax(0,1fr) auto}.native-book-page{padding:25px}.native-reading-heading{padding-bottom:18px}}@media(max-width:600px){.book-reader .guide-reader-heading{flex-wrap:wrap}.book-index{padding:16px}.book-download{margin-left:0}.native-book-page,.guide-dialog .native-book-page{padding:20px 17px}.native-prose{line-height:1.8}.native-prose pre{font-size:12px;padding:12px}.native-figure{padding:6px}.native-reading-meta{display:grid}.native-reading-controls{align-items:stretch}.native-reading-controls .btn{flex:1 1 auto}.native-page-jump{padding:16px}.book-reader .guide-toolbar{gap:10px 12px}.book-document{width:100%}}