:root{color:#242931;font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;--accent:#f0542d;--accent-soft:#fff1ec;--accent-line:#ffb6a4;--surface:#fff;--surface-soft:#f7f8fa;--surface-muted:#eef1f4;--canvas-bg:#e9edf1;--text:#20252d;--text-soft:#68717d;--text-faint:#929ba7;--line:#e3e7eb;--line-strong:#d5dbe1;--shadow:0 16px 45px #1c232b24;background:#edf0f3;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Microsoft YaHei,sans-serif}*{box-sizing:border-box}html,body,#app{width:100%;height:100%;margin:0;overflow:hidden}body{min-width:320px}button,input{font:inherit}button{color:inherit}button:focus-visible,input:focus-visible{outline:2px solid color-mix(in srgb, var(--accent) 68%, white);outline-offset:2px}.manual-app{width:100%;height:100dvh;color:var(--text);background:var(--canvas-bg);grid-template-columns:304px minmax(0,1fr);transition:background-color .18s,color .18s;display:grid;overflow:hidden}.theme-dark{--surface:#171a1f;--surface-soft:#1d2127;--surface-muted:#242a31;--canvas-bg:#0e1115;--text:#eef2f6;--text-soft:#abb4bf;--text-faint:#77818e;--line:#2d333b;--line-strong:#3b434d;--accent-soft:#f0542d21;--accent-line:#f0542d85;--shadow:0 20px 60px #00000070}.sidebar{z-index:20;background:var(--surface);border-right:1px solid var(--line);grid-template-rows:auto auto auto auto minmax(0,1fr) auto;min-width:0;height:100%;display:grid;position:relative;box-shadow:6px 0 24px #1c232b0a}.sidebar-brand{border-bottom:1px solid var(--line);align-items:center;min-height:68px;padding:12px 18px;display:flex}.brand-mark{color:#fff;letter-spacing:-.8px;background:var(--accent);clip-path:polygon(6% 0,100% 0,91% 100%,0 100%);place-items:center;width:46px;height:38px;font-size:14px;font-weight:900;display:grid;transform:skew(-4deg)}.brand-copy{flex-direction:column;flex:1;min-width:0;margin-left:11px;display:flex}.brand-copy strong{letter-spacing:.05em;font-size:15px;line-height:1.1}.brand-copy span{color:var(--text-soft);margin-top:4px;font-size:11px}.icon-button,.sidebar-close{cursor:pointer;background:0 0;border:0;place-items:center;display:grid}.sidebar-close{width:36px;height:36px;font-size:26px;display:none}.sidebar-search{align-items:center;margin:16px 16px 10px;display:flex;position:relative}.sidebar-search-area{gap:8px;margin:14px 16px 10px;display:grid}.sidebar-search-area .sidebar-search{margin:0}.sidebar-search-tabs{background:var(--surface-muted);border:1px solid var(--line);border-radius:8px;grid-template-columns:repeat(2,minmax(0,1fr));padding:3px;display:grid}.sidebar-search-tabs button{height:29px;color:var(--text-faint);cursor:pointer;background:0 0;border:0;border-radius:5px;padding:0 8px;font-size:11px;font-weight:650;transition:color .15s,background-color .15s,box-shadow .15s}.sidebar-search-tabs button.active{color:var(--accent);background:var(--surface);box-shadow:0 1px 4px #1c232b17}.sidebar-search input{width:100%;height:40px;color:var(--text);background:var(--surface-soft);border:1px solid var(--line);border-radius:8px;padding:0 38px 0 36px;font-size:13px;transition:border-color .16s,box-shadow .16s}.sidebar-search input:focus{border-color:var(--accent-line);box-shadow:0 0 0 3px var(--accent-soft);outline:0}.sidebar-search input::-webkit-search-cancel-button{display:none}.search-icon{z-index:1;color:var(--text-faint);font-size:20px;position:absolute;left:12px;transform:rotate(-20deg)}.clear-search{width:28px;height:28px;color:var(--text-soft);cursor:pointer;background:0 0;border:0;border-radius:6px;place-items:center;padding:0;font-size:18px;display:grid;position:absolute;right:6px}.sidebar-summary{background:var(--surface-soft);border:1px solid var(--line);border-radius:8px;grid-template-columns:repeat(3,1fr);margin:0 16px 11px;padding:11px 4px;display:grid}.sidebar-summary div{flex-direction:column;align-items:center;min-width:0;display:flex}.sidebar-summary div+div{border-left:1px solid var(--line)}.sidebar-summary strong{font-size:15px;line-height:1.15}.sidebar-summary span{color:var(--text-faint);margin-top:4px;font-size:10px}.outline-actions{border-bottom:1px solid var(--line);justify-content:space-between;padding:8px 18px 10px;display:flex}.outline-actions button{color:#2588d8;cursor:pointer;background:0 0;border:0;padding:4px 0;font-size:12px}.outline-actions button:hover{color:var(--accent)}.pc-search-status{min-height:42px;color:var(--text-faint);border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;padding:8px 18px 10px;font-size:10px;display:flex}.pc-search-status>span:first-child{background:var(--surface-muted);border-radius:999px;flex:1;height:4px;margin-right:10px;position:relative;overflow:hidden}.pc-search-status>span:first-child i{background:linear-gradient(90deg, var(--accent), #ff9b55);border-radius:inherit;transition:width .12s;position:absolute;inset:0 auto 0 0}.pc-search-status strong{color:var(--text-soft);font-size:11px}.pc-search-status strong+span{margin-left:8px}.bookmark-list{scrollbar-color:var(--line-strong) transparent;scrollbar-width:thin;padding:8px 8px 20px;overflow:hidden auto}.bookmark-list::-webkit-scrollbar{width:9px;height:9px}.viewer::-webkit-scrollbar{width:9px;height:9px}.bookmark-list::-webkit-scrollbar-thumb{background:var(--line-strong);background-clip:padding-box;border:2px solid #0000;border-radius:999px}.viewer::-webkit-scrollbar-thumb{background:var(--line-strong);background-clip:padding-box;border:2px solid #0000;border-radius:999px}.bookmark-entry{--bookmark-indent:calc(var(--bookmark-depth) * 14px);min-height:31px;padding-left:calc(5px + var(--bookmark-indent));color:var(--text-soft);border-radius:5px;align-items:center;margin:1px 0;transition:color .14s,background-color .14s;display:flex}.bookmark-entry:hover{color:var(--text);background:var(--surface-soft)}.bookmark-chapter{color:var(--text);margin-top:6px;font-weight:650}.bookmark-active{color:var(--accent);background:var(--accent-soft);box-shadow:inset 3px 0 var(--accent)}.bookmark-toggle{color:#d99a23;cursor:pointer;background:0 0;border:0;flex:0 0 22px;place-items:center;width:22px;height:24px;padding:0;font-weight:750;display:grid}.bookmark-file{color:#ef6653;flex:0 0 22px;place-items:center;width:22px;font-size:13px;display:grid}.bookmark-link{min-width:0;height:30px;color:inherit;text-align:left;cursor:pointer;background:0 0;border:0;flex:1;align-items:center;padding:0 8px 0 1px;display:flex}.bookmark-link span{text-overflow:ellipsis;white-space:nowrap;flex:1;font-size:12.5px;line-height:1.3;overflow:hidden}.bookmark-link small{color:var(--text-faint);font-variant-numeric:tabular-nums;margin-left:6px;font-size:10px}.bookmark-skeleton{gap:13px;padding:12px 10px;display:grid}.bookmark-skeleton span{background:linear-gradient(90deg, var(--surface-muted), var(--surface-soft), var(--surface-muted));background-size:180% 100%;border-radius:99px;height:10px;animation:1.3s linear infinite shimmer}.empty-bookmarks{color:var(--text-faint);text-align:center;place-items:center;padding:50px 12px;display:grid}.empty-bookmarks span{font-size:28px}.empty-bookmarks p{margin:8px 0 0;font-size:13px}.pc-search-results{scrollbar-color:var(--line-strong) transparent;scrollbar-width:thin;min-height:0;padding:8px;overflow:hidden auto}.pc-search-guide{color:var(--text-faint);text-align:center;flex-direction:column;align-items:center;padding:48px 20px;display:flex}.pc-search-guide>span{width:48px;height:48px;color:var(--accent);background:var(--accent-soft);border:1px solid var(--accent-line);border-radius:14px;place-items:center;font-size:17px;font-weight:800;display:grid}.pc-search-guide strong{color:var(--text-soft);margin-top:14px;font-size:13px}.pc-search-guide p{margin:8px 0 0;font-size:11px;line-height:1.65}.pc-search-result{width:100%;color:var(--text-soft);text-align:left;cursor:pointer;background:0 0;border:1px solid #0000;border-radius:8px;margin-bottom:6px;padding:11px 12px;transition:background-color .15s,border-color .15s,transform .15s;display:block}.pc-search-result:hover{background:var(--surface-soft);border-color:var(--line);transform:translate(2px)}.pc-search-result-meta{justify-content:space-between;align-items:center;margin-bottom:6px;display:flex}.pc-search-result-meta strong{color:var(--text);font-size:11px}.pc-search-result-meta em{color:var(--accent);background:var(--accent-soft);border-radius:999px;padding:2px 6px;font-size:9px;font-style:normal;font-weight:700}.pc-search-result-snippet{text-overflow:ellipsis;font-size:11px;line-height:1.6;display:block;overflow:hidden}.pc-search-result-snippet mark{color:#7d3600;background:#ffe28a;border-radius:2px;padding:0 1px;font-weight:750}.theme-dark .pc-search-result-snippet mark{color:#291100;background:#ffc75a}.pc-searching,.pc-search-limit{color:var(--text-faint);text-align:center;padding:20px 12px;font-size:11px;line-height:1.6}.pc-search-empty{padding-top:42px}.pc-search-empty small{max-width:220px;margin-top:8px;font-size:10px;line-height:1.55}.sidebar-footer{min-height:40px;color:var(--text-faint);border-top:1px solid var(--line);justify-content:center;align-items:center;gap:7px;font-size:10px;display:flex}.sidebar-footer kbd{color:var(--text-soft);font:inherit;background:var(--surface-soft);border:1px solid var(--line-strong);box-shadow:0 1px 0 var(--line-strong);border-radius:4px;padding:1px 5px}.sidebar-backdrop{display:none}.reader{grid-template-rows:64px 40px minmax(0,1fr);min-width:0;height:100dvh;min-height:0;max-height:100dvh;display:grid;position:relative;overflow:hidden}.topbar{z-index:10;background:var(--surface);border-bottom:1px solid var(--line);grid-template-columns:minmax(220px,1fr) auto auto auto;align-items:center;min-width:0;padding:0 18px;display:grid;position:relative;box-shadow:0 2px 12px #191f260a}.topbar-title{align-items:center;min-width:0;display:flex}.menu-button{border-radius:8px;width:38px;height:38px;margin-right:5px;font-size:18px;display:none}.status-dot{background:#31bb70;border-radius:50%;flex:0 0 8px;width:8px;height:8px;margin-right:10px;box-shadow:0 0 0 4px #31bb7021}.topbar-title div{min-width:0}.topbar h1{color:var(--text);text-overflow:ellipsis;white-space:nowrap;margin:0;font-size:15px;line-height:1.25;overflow:hidden}.topbar-title p{color:var(--text-faint);letter-spacing:.11em;text-overflow:ellipsis;white-space:nowrap;margin:3px 0 0;font-size:9px;overflow:hidden}.toolbar{background:var(--surface-soft);border:1px solid var(--line);border-radius:7px;align-items:center;height:34px;margin-left:10px;display:flex}.toolbar button{min-width:34px;height:32px;color:var(--text-soft);cursor:pointer;background:0 0;border:0;place-items:center;padding:0 8px;font-size:19px;display:grid}.toolbar button:hover:not(:disabled){color:var(--accent);background:var(--accent-soft)}.toolbar button:disabled,.mobile-toolbar button:disabled{opacity:.35;cursor:not-allowed}.page-controls input{width:39px;height:24px;color:var(--text);text-align:center;background:var(--surface);border:1px solid var(--line-strong);font-variant-numeric:tabular-nums;border-radius:4px;padding:0 4px;font-size:12px}.page-controls>span{min-width:41px;color:var(--text-faint);white-space:nowrap;margin:0 2px 0 5px;font-size:11px}.zoom-controls .zoom-value{min-width:53px;color:var(--text);border-right:1px solid var(--line);border-left:1px solid var(--line);font-size:11px}.topbar-actions{align-items:center;gap:2px;margin-left:10px;display:flex}.topbar-actions button,.topbar-actions .route-switch{height:34px;color:var(--text-soft);cursor:pointer;background:0 0;border:0;border-radius:6px;align-items:center;gap:4px;padding:0 7px;font-size:13px;text-decoration:none;display:flex}.topbar-actions button:hover,.topbar-actions .route-switch:hover{color:var(--accent);background:var(--accent-soft)}.topbar-actions button.active{color:var(--accent);background:var(--accent-soft);box-shadow:inset 0 0 0 1px var(--accent-line)}.topbar-actions em{font-size:10px;font-style:normal}.reader-status{z-index:5;background:var(--surface);border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;min-width:0;padding:0 22px;display:flex;position:relative}.chapter-label,.document-status{align-items:center;min-width:0;display:flex}.chapter-label span{color:var(--text-faint);flex:none;margin-right:8px;font-size:10px}.chapter-label strong{color:var(--text-soft);text-overflow:ellipsis;white-space:nowrap;font-size:11px;overflow:hidden}.document-status{color:var(--text-faint);flex:none;font-size:10px}.desktop-input-hint{color:var(--text-faint);border-left:1px solid var(--line-strong);white-space:nowrap;margin-left:12px;padding-left:12px}.status-separator{background:var(--line-strong);width:1px;height:11px;margin:0 9px}.render-indicator{color:var(--accent)}.reading-progress{background:0 0;height:2px;position:absolute;bottom:-1px;left:0;right:0}.reading-progress span{background:linear-gradient(90deg, #e33d1d, var(--accent));height:100%;transition:width .26s;display:block}.viewer{overscroll-behavior:contain;background:radial-gradient(circle at 25% 10%, #fff9, transparent 28%), var(--canvas-bg);scrollbar-color:var(--line-strong) transparent;scrollbar-width:thin;min-width:0;min-height:0;position:relative;overflow:auto}.viewer:focus{outline:none}.viewer:focus-visible{box-shadow:inset 0 0 0 2px #f35c268c}.pdf-stage{justify-content:center;align-items:flex-start;width:max-content;min-width:100%;min-height:100%;padding:32px;display:flex;position:relative}.pdf-sheet{min-width:1px;min-height:1px;box-shadow:var(--shadow), 0 2px 8px #141c241a;background:#fff;border:1px solid #2b323a1f;border-radius:2px;flex:none;position:relative;overflow:hidden}.pdf-sheet canvas{background:#fff;max-width:none;transition:filter .18s,opacity .12s;display:block}.pdf-sheet.tile-mode>canvas{opacity:0}.theme-dark .pdf-sheet canvas,.theme-dark .pdf-tile-layer{filter:invert(.9)hue-rotate(180deg)brightness(.9)contrast(.96)}.pc-search-highlight-layer{z-index:2;pointer-events:none;position:absolute;inset:0;overflow:hidden}.pc-search-highlight-layer span{mix-blend-mode:multiply;transform-origin:0 100%;background:#ffd72d94;border:1px solid #e6910057;border-radius:2px;position:absolute;box-shadow:inset 0 0 0 1px #fff5a633}.theme-dark .pc-search-highlight-layer span{mix-blend-mode:screen;background:#ffae26a8;border-color:#ffd96f7a}.page-rendering canvas{opacity:.8}.render-overlay{z-index:3;pointer-events:none;place-items:start end;padding:13px;display:grid;position:absolute;inset:0}.render-overlay span{border:2px solid #f0542d33;border-top-color:var(--accent);border-radius:50%;width:20px;height:20px;animation:.7s linear infinite spin}.page-badge{color:#ffffffeb;font-variant-numeric:tabular-nums;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#191f26c7;border-radius:999px;align-self:flex-start;margin-left:-66px;padding:6px 10px;font-size:10px;position:sticky;top:16px;right:16px}.translation-overlay-toolbar{z-index:18;width:max-content;min-height:38px;color:var(--text-soft);background:color-mix(in srgb, var(--surface) 92%, transparent);border:1px solid var(--line-strong);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-radius:10px;align-items:center;margin:12px 14px -50px auto;padding:4px;display:flex;position:sticky;top:12px;left:100%;box-shadow:0 10px 28px #191f2629}.translation-overlay-toolbar span{color:var(--accent);padding:0 10px;font-size:11px}.translation-overlay-toolbar button{height:28px;color:inherit;cursor:pointer;background:0 0;border:0;border-radius:7px;padding:0 9px;font-size:10px;font-weight:700}.translation-overlay-toolbar button.active{color:#fff;background:var(--accent)}.translation-overlay-toolbar button:last-child{padding:0 7px;font-size:18px}.loading-state,.error-state{text-align:center;flex-direction:column;justify-content:center;align-items:center;padding:28px;display:flex;position:absolute;inset:0}.loading-emblem{color:#fff;letter-spacing:-1px;background:var(--accent);clip-path:polygon(8% 0,100% 0,90% 100%,0 100%);place-items:center;width:76px;height:58px;font-size:21px;font-weight:900;animation:1.8s ease-in-out infinite loadingFloat;display:grid}.loading-state h2,.error-state h2{color:var(--text);margin:22px 0 7px;font-size:19px}.loading-state p,.error-state p{color:var(--text-soft);margin:0;font-size:12px}.loading-track{background:var(--surface-muted);border-radius:99px;width:min(320px,72vw);height:5px;margin:24px 0 9px;overflow:hidden}.loading-track span{border-radius:inherit;background:linear-gradient(90deg,#d83b1d,#ff7b4f);height:100%;transition:width .18s;display:block}.loading-state>strong{color:var(--accent);font-size:11px}.error-state>span{width:50px;height:50px;color:var(--accent);background:var(--accent-soft);border:1px solid var(--accent-line);border-radius:50%;place-items:center;font-size:24px;font-weight:800;display:grid}.error-state button{color:#fff;background:var(--accent);cursor:pointer;border:0;border-radius:7px;margin-top:20px;padding:9px 20px}.mobile-toolbar{display:none}.toast{z-index:30;color:#fff;background:#252b32;border-radius:8px;align-items:center;gap:14px;max-width:min(440px,100% - 36px);padding:11px 12px 11px 16px;font-size:12px;display:flex;position:absolute;bottom:18px;right:18px;box-shadow:0 12px 35px #00000040}.toast button{color:#fff;cursor:pointer;background:#ffffff1a;border:0;border-radius:5px;place-items:center;width:25px;height:25px;padding:0;font-size:18px;display:grid}@keyframes spin{to{transform:rotate(360deg)}}@keyframes shimmer{to{background-position:-180% 0}}@keyframes loadingFloat{50%{transform:translateY(-5px)}}@media (width<=1180px){.manual-app{grid-template-columns:282px minmax(0,1fr)}.topbar-actions em{display:none}.topbar-actions button,.topbar-actions .route-switch{justify-content:center;width:32px;padding:0}.desktop-input-hint{display:none}}@media (width<=960px){.manual-app{grid-template-columns:262px minmax(0,1fr)}.zoom-controls{display:none}.topbar{grid-template-columns:minmax(180px,1fr) auto auto}}@media (width<=768px){.manual-app{display:block}.sidebar{z-index:100;width:min(88vw,336px);transition:transform .22s cubic-bezier(.2,.8,.2,1);position:fixed;inset:0 auto 0 0;transform:translate(-104%)}.sidebar-open{transform:translate(0)}.sidebar-close{display:grid}.sidebar-backdrop{z-index:90;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);background:#0d11167a;border:0;width:100%;height:100%;padding:0;display:block;position:fixed;inset:0}.reader{grid-template-rows:56px 35px minmax(0, 1fr) calc(58px + env(safe-area-inset-bottom));width:100%;height:100dvh}.topbar{padding:0 9px;display:flex}.topbar-title{flex:1}.menu-button{display:grid}.status-dot{display:none}.topbar h1{font-size:14px}.topbar-title p{font-size:8px}.page-controls,.zoom-controls,.topbar-actions button:first-child,.topbar-actions button:nth-child(4){display:none}.topbar-actions{flex:none;margin-left:4px}.topbar-actions button,.topbar-actions .route-switch{width:35px;height:35px;font-size:16px;display:flex}.reader-status{padding:0 12px}.chapter-label span{display:none}.chapter-label strong{max-width:58vw;font-size:10px}.document-status{font-size:9px}.document-status .status-separator,.desktop-input-hint{display:none}.pdf-stage{padding:10px 10px 26px}.pdf-sheet{box-shadow:0 8px 25px #141c2424}.page-badge{margin-left:-57px;padding:4px 7px;font-size:9px;top:8px;right:8px}.mobile-toolbar{z-index:12;padding:6px 10px calc(6px + env(safe-area-inset-bottom));background:color-mix(in srgb, var(--surface) 95%, transparent);border-top:1px solid var(--line);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);grid-template-columns:44px minmax(62px,1fr) 44px 1px 44px minmax(58px,.9fr) 44px;align-items:center;gap:2px;display:grid;position:relative;box-shadow:0 -6px 20px #171d240f}.mobile-toolbar button{height:42px;color:var(--text-soft);background:0 0;border:0;border-radius:8px;place-items:center;padding:0;font-size:22px;display:grid}.mobile-toolbar button:active{color:var(--accent);background:var(--accent-soft)}.mobile-toolbar .mobile-page{background:var(--surface-soft);border:1px solid var(--line);justify-content:center;gap:4px;font-size:11px;display:flex}.mobile-page strong{color:var(--text);font-size:13px}.mobile-page span{color:var(--text-faint)}.mobile-divider{background:var(--line-strong);width:1px;height:25px}.mobile-toolbar .mobile-zoom{background:var(--surface-soft);border:1px solid var(--line);font-size:11px}.toast{right:10px;bottom:calc(69px + env(safe-area-inset-bottom))}}@media (width<=420px){.brand-copy span{font-size:10px}.topbar-title p,.topbar-actions button:nth-child(2){display:none}.mobile-toolbar{grid-template-columns:42px minmax(56px,1fr) 42px 1px 42px minmax(54px,.9fr) 42px;padding-left:5px;padding-right:5px}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}