:root{--surface-primary:255 255 255;--surface-secondary:250 250 251;--surface-elevated:255 255 255;--surface-glass:255 255 255;--text-primary:28 32 36;--text-secondary:110 118 126;--text-tertiary:156 163 175;--text-inverse:255 255 255;--border-primary:0 0 0;--border-secondary:156 163 175;--border-glass:255 255 255;--interactive-hover:0 0 0;--interactive-active:0 0 0;--interactive-focus:59 130 246;--interactive-disabled:156 163 175;--glass-opacity-low:0.80;--glass-opacity-medium:0.90;--glass-opacity-high:0.95;--glass-opacity-solid:0.98;--bg:var(--surface-primary);--fg:var(--text-primary);--muted:var(--text-secondary);--border:var(--border-primary);--border-opacity:0.08;--accent:59 130 246;--surface:var(--surface-primary);--surface-hover:var(--surface-secondary)}.dark{--surface-primary:16 18 21;--surface-secondary:24 27 31;--surface-elevated:32 36 41;--surface-glass:16 18 21;--text-primary:245 245 247;--text-secondary:155 160 170;--text-tertiary:107 114 128;--text-inverse:16 18 21;--border-primary:255 255 255;--border-secondary:75 85 99;--border-glass:255 255 255;--interactive-hover:255 255 255;--interactive-active:255 255 255;--interactive-focus:96 165 250;--interactive-disabled:75 85 99;--bg:16 18 21;--fg:245 245 247;--muted:155 160 170;--border:255 255 255;--border-opacity:0.08;--accent:135 169 107;--surface:24 27 31;--surface-hover:32 36 41}.theme-transitioning,.theme-transitioning *{transition-property:background-color,border-color,color,-webkit-backdrop-filter;transition-property:background-color,border-color,color,backdrop-filter;transition-property:background-color,border-color,color,backdrop-filter,-webkit-backdrop-filter;transition-duration:.2s;transition-timing-function:ease-out}html:not(.dark):not(.light){--surface-primary:255 255 255;--text-primary:28 32 36;--surface-glass:255 255 255}.surface-primary{background-color:rgba(var(--surface-primary),1)}.surface-secondary{background-color:rgba(var(--surface-secondary),1)}.surface-elevated{background-color:rgba(var(--surface-elevated),1)}.surface-glass-low{background-color:rgba(var(--surface-glass),var(--glass-opacity-low));-webkit-backdrop-filter:blur(20px) saturate(180%);backdrop-filter:blur(20px) saturate(180%);border:1px solid rgba(var(--border-glass),.1)}.surface-glass-medium{background-color:rgba(var(--surface-glass),var(--glass-opacity-medium));-webkit-backdrop-filter:blur(24px) saturate(200%);backdrop-filter:blur(24px) saturate(200%);border:1px solid rgba(var(--border-glass),.15)}.surface-glass-high{background-color:rgba(var(--surface-glass),var(--glass-opacity-high));-webkit-backdrop-filter:blur(28px) saturate(220%);backdrop-filter:blur(28px) saturate(220%);border:1px solid rgba(var(--border-glass),.2)}.surface-glass-solid{background-color:rgba(var(--surface-glass),var(--glass-opacity-solid));-webkit-backdrop-filter:blur(32px) saturate(240%);backdrop-filter:blur(32px) saturate(240%);border:1px solid rgba(var(--border-glass),.25)}.text-primary{color:rgb(var(--text-primary))}.text-secondary{color:rgb(var(--text-secondary))}.text-tertiary{color:rgb(var(--text-tertiary))}.text-inverse{color:rgb(var(--text-inverse))}.border-primary{border-color:rgba(var(--border-primary),.1)}.border-secondary{border-color:rgba(var(--border-secondary),.2)}.border-glass{border-color:rgba(var(--border-glass),.15)}.interactive-hover{background-color:rgba(var(--interactive-hover),.05)}.interactive-active{background-color:rgba(var(--interactive-active),.1)}.interactive-focus{outline:2px solid rgba(var(--interactive-focus),.4);outline-offset:2px}.interactive-disabled{opacity:.5;cursor:not-allowed}.hover\:interactive-hover:hover{background-color:rgba(var(--interactive-hover),.05)}.hover\:interactive-active:hover{background-color:rgba(var(--interactive-active),.08)}.hover\:text-primary:hover{color:rgb(var(--text-primary))}.focus\:interactive-focus:focus{outline:2px solid rgba(var(--interactive-focus),.4);outline-offset:2px}.active\:interactive-active:active{background-color:rgba(var(--interactive-active),.1)}.reader-panel{background-color:rgba(var(--surface-glass),var(--glass-opacity-high));-webkit-backdrop-filter:blur(28px) saturate(220%);backdrop-filter:blur(28px) saturate(220%);border:1px solid rgba(var(--border-glass),.2);color:rgb(var(--text-primary))}.reader-button{color:rgb(var(--text-secondary));transition:all .2s ease}.reader-button:hover{color:rgb(var(--text-primary));background-color:rgba(var(--interactive-hover),.05)}.reader-button:active{background-color:rgba(var(--interactive-active),.1)}.modal-glass-enhanced{background-color:rgba(var(--surface-elevated),var(--glass-opacity-solid));-webkit-backdrop-filter:blur(32px) saturate(240%);backdrop-filter:blur(32px) saturate(240%);border:1px solid rgba(var(--border-glass),.25);box-shadow:0 20px 60px rgba(0,0,0,.1),0 8px 25px rgba(0,0,0,.05),inset 0 1px 0 rgba(var(--border-glass),.4)}.panel-header{border-bottom:1px solid rgba(var(--border-primary),.08);background:linear-gradient(to bottom,rgba(var(--border-glass),.1),transparent)}.sidebar-glass{background-color:rgba(var(--surface-glass),var(--glass-opacity-high));-webkit-backdrop-filter:blur(28px) saturate(220%);backdrop-filter:blur(28px) saturate(220%);border:1px solid rgba(var(--border-glass),.2);box-shadow:0 16px 48px rgba(0,0,0,.08),0 4px 16px rgba(0,0,0,.04)}.bottom-sheet-glass{background-color:rgba(var(--surface-glass),var(--glass-opacity-solid));-webkit-backdrop-filter:blur(32px) saturate(240%);backdrop-filter:blur(32px) saturate(240%);border-top:1px solid rgba(var(--border-glass),.25);box-shadow:0 -8px 32px rgba(0,0,0,.1),0 -2px 8px rgba(0,0,0,.05)}.toolbar-glass{background-color:rgba(var(--surface-glass),var(--glass-opacity-medium));-webkit-backdrop-filter:blur(24px) saturate(200%);backdrop-filter:blur(24px) saturate(200%);border:1px solid rgba(var(--border-glass),.15);box-shadow:0 8px 32px rgba(0,0,0,.06),0 2px 8px rgba(0,0,0,.03)}.dark .surface-glass-high,.dark .surface-glass-low,.dark .surface-glass-medium,.dark .surface-glass-solid{box-shadow:0 8px 32px rgba(0,0,0,.4),0 2px 8px rgba(0,0,0,.2),inset 0 1px 0 rgba(var(--border-glass),.08)}.reader-floating{background:rgba(var(--surface-glass),var(--glass-opacity-high));border:1px solid rgba(var(--border-glass),.2);color:rgb(var(--text-primary));-webkit-backdrop-filter:blur(28px) saturate(220%);backdrop-filter:blur(28px) saturate(220%);box-shadow:0 20px 60px rgba(0,0,0,.12),0 8px 24px rgba(0,0,0,.08),0 2px 8px rgba(0,0,0,.04),inset 0 1px 0 rgba(var(--border-glass),.3)}.reader-floating.no-top-glint{box-shadow:0 16px 48px rgba(0,0,0,.08),0 4px 16px rgba(0,0,0,.04)}.reader-btn{color:rgb(var(--text-secondary));transition:all .2s ease;border-radius:.75rem;padding:.5rem;min-width:44px;min-height:44px;display:flex;align-items:center;justify-content:center}.reader-btn:hover{color:rgb(var(--text-primary));background-color:rgba(var(--interactive-hover),.08)}.reader-btn:active{background-color:rgba(var(--interactive-active),.12)}.reader-btn:disabled{opacity:.3;cursor:not-allowed}.reader-panel-content{color:rgb(var(--text-primary))}.reader-panel-content .text-muted{color:rgb(var(--text-secondary))}.reader-search-input{background-color:rgba(var(--surface-secondary),.8);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border:1px solid rgba(var(--border-primary),.15);color:rgb(var(--text-primary));transition:all .2s ease}.reader-search-input:focus{background-color:rgba(var(--surface-secondary),.9);border-color:rgba(var(--interactive-focus),.4);outline:0;box-shadow:0 0 0 3px rgba(var(--interactive-focus),.1)}.reader-search-input::-moz-placeholder{color:rgb(var(--text-tertiary))}.reader-search-input::placeholder{color:rgb(var(--text-tertiary))}.reader-modal-glass{background:rgba(var(--surface-elevated),var(--glass-opacity-solid));-webkit-backdrop-filter:blur(32px) saturate(240%);backdrop-filter:blur(32px) saturate(240%);border:1px solid rgba(var(--border-glass),.25);color:rgb(var(--text-primary));box-shadow:0 24px 80px rgba(0,0,0,.12),0 8px 32px rgba(0,0,0,.08),inset 0 1px 0 rgba(var(--border-glass),.4)}.reader-mobile-toolbar{background-color:rgba(var(--surface-glass),var(--glass-opacity-medium));-webkit-backdrop-filter:blur(24px) saturate(200%);backdrop-filter:blur(24px) saturate(200%);border-bottom:1px solid rgba(var(--border-glass),.15);color:rgb(var(--text-primary))}.mobile-btn{padding:.625rem;border-radius:.75rem;background-color:rgba(var(--interactive-hover),.1);color:rgb(var(--text-secondary));transition:all .2s ease;min-width:44px;min-height:44px;display:flex;align-items:center;justify-content:center}.mobile-btn:active{background-color:rgba(var(--interactive-active),.3);transform:scale(.95)}.reader-progress-track{background-color:rgba(var(--text-tertiary),.1);height:.375rem;border-radius:.1875rem;overflow:hidden}.reader-progress-fill{background:linear-gradient(to right,rgba(var(--interactive-focus),1),rgba(var(--interactive-focus),.8));height:100%;border-radius:.1875rem;transition:width .3s ease}.reader-dropdown{background-color:rgba(var(--surface-glass),var(--glass-opacity-medium));-webkit-backdrop-filter:blur(24px) saturate(200%);backdrop-filter:blur(24px) saturate(200%);border:1px solid rgba(var(--border-glass),.2);border-radius:1rem;padding:.5rem;box-shadow:0 16px 48px rgba(0,0,0,.12),0 4px 16px rgba(0,0,0,.08)}.reader-dropdown-item{display:flex;align-items:center;gap:.75rem;padding:.625rem .75rem;border-radius:.75rem;color:rgb(var(--text-primary));transition:all .2s ease;min-height:44px}.reader-dropdown-item:hover{background-color:rgba(var(--interactive-hover),.08)}.reader-dropdown-item:active{background-color:rgba(var(--interactive-active),.12)}.reader-slider{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:100%;height:.5rem;background-color:rgba(var(--text-tertiary),.3);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-radius:.25rem;outline:none;cursor:pointer}.reader-slider::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:1.25rem;height:1.25rem;background:rgb(var(--interactive-focus));border-radius:50%;cursor:pointer;box-shadow:0 2px 8px rgba(var(--interactive-focus),.3);-webkit-transition:transform .2s ease;transition:transform .2s ease}.reader-slider::-webkit-slider-thumb:hover{transform:scale(1.1)}.reader-slider::-moz-range-thumb{width:1.25rem;height:1.25rem;background:rgb(var(--interactive-focus));border-radius:50%;cursor:pointer;border:none;box-shadow:0 2px 8px rgba(var(--interactive-focus),.3);-moz-transition:transform .2s ease;transition:transform .2s ease}.reader-slider::-moz-range-thumb:hover{transform:scale(1.1)}.reader-tabs{background-color:rgba(var(--surface-secondary),.2);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-radius:.75rem;padding:.25rem;display:flex;gap:.25rem}.reader-tab{flex:1;padding:.625rem 1rem;border-radius:.5rem;font-size:.875rem;font-weight:500;transition:all .2s ease;color:rgb(var(--text-secondary));background:transparent;min-height:44px;display:flex;align-items:center;justify-content:center}.reader-tab[aria-selected=true]{background-color:rgba(var(--surface-elevated),.9);color:rgb(var(--text-primary));box-shadow:0 2px 8px rgba(0,0,0,.04),0 0 0 1px rgba(var(--border-glass),.15)}.reader-skeleton{background:linear-gradient(90deg,rgba(var(--text-tertiary),.1) 25%,rgba(var(--text-tertiary),.2) 50%,rgba(var(--text-tertiary),.1) 75%);background-size:200% 100%;animation:reader-skeleton-loading 1.5s infinite;border-radius:.25rem}@keyframes reader-skeleton-loading{0%{background-position:200% 0}to{background-position:-200% 0}}.reader-empty-state{text-align:center;padding:3rem 1.5rem;color:rgb(var(--text-secondary))}.reader-empty-state-icon{width:4rem;height:4rem;margin:0 auto 1rem;background-color:rgba(var(--text-tertiary),.1);border-radius:1rem;display:flex;align-items:center;justify-content:center;color:rgb(var(--text-tertiary))}.dark .reader-dropdown,.dark .reader-floating,.dark .reader-mobile-toolbar,.dark .reader-modal-glass{box-shadow:0 30px 90px rgba(0,0,0,.5),0 12px 40px rgba(0,0,0,.3),0 4px 16px rgba(0,0,0,.2),inset 0 1px 0 rgba(var(--border-glass),.08)}@media (max-width:768px){.reader-floating{-webkit-backdrop-filter:blur(20px) saturate(180%);backdrop-filter:blur(20px) saturate(180%)}.reader-modal-glass{-webkit-backdrop-filter:blur(24px) saturate(200%);backdrop-filter:blur(24px) saturate(200%)}}@media (prefers-reduced-motion:reduce){.mobile-btn,.reader-btn,.reader-dropdown-item,.reader-progress-fill,.reader-search-input,.reader-slider::-moz-range-thumb,.reader-slider::-webkit-slider-thumb,.reader-tab{-webkit-transition:none;-moz-transition:none;transition:none}.reader-skeleton{animation:none}}:root{--glass-bg-primary:rgba(255,255,255,0.95);--glass-bg-secondary:rgba(255,255,255,0.90);--glass-bg-tertiary:rgba(255,255,255,0.85);--glass-bg-overlay:rgba(255,255,255,0.98);--glass-border:rgba(0,0,0,0.1);--glass-shadow:0 8px 32px 0 rgba(31,38,135,0.15);--backdrop-blur-sm:8px;--backdrop-blur-md:12px;--backdrop-blur-lg:20px;--backdrop-blur-xl:24px;--modal-backdrop:rgba(0,0,0,0.5)}[data-theme=dark]{--glass-bg-primary:rgba(17,24,39,0.95);--glass-bg-secondary:rgba(17,24,39,0.90);--glass-bg-tertiary:rgba(17,24,39,0.85);--glass-bg-overlay:rgba(17,24,39,0.98);--glass-border:rgba(255,255,255,0.1);--glass-shadow:0 8px 32px 0 rgba(0,0,0,0.3);--modal-backdrop:rgba(0,0,0,0.7)}.glass-primary{background:var(--glass-bg-primary);backdrop-filter:blur(var(--backdrop-blur-md));-webkit-backdrop-filter:blur(var(--backdrop-blur-md));border:1px solid var(--glass-border);box-shadow:var(--glass-shadow)}.glass-secondary{background:var(--glass-bg-secondary)}.glass-secondary,.glass-tertiary{backdrop-filter:blur(var(--backdrop-blur-sm));-webkit-backdrop-filter:blur(var(--backdrop-blur-sm));border:1px solid var(--glass-border)}.glass-tertiary{background:var(--glass-bg-tertiary)}.glass-overlay{backdrop-filter:blur(var(--backdrop-blur-xl));-webkit-backdrop-filter:blur(var(--backdrop-blur-xl))}.glass-modal,.glass-overlay{background:var(--glass-bg-overlay);border:1px solid var(--glass-border);box-shadow:var(--glass-shadow)}.glass-modal{backdrop-filter:blur(var(--backdrop-blur-lg));-webkit-backdrop-filter:blur(var(--backdrop-blur-lg))}.modal-backdrop{background:var(--modal-backdrop);backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px)}.glass-modal,.glass-overlay,.glass-primary,.glass-secondary,.glass-tertiary{color:rgb(var(--foreground))}.loading-overlay{background:var(--glass-bg-overlay)!important;backdrop-filter:blur(var(--backdrop-blur-md));-webkit-backdrop-filter:blur(var(--backdrop-blur-md))}.annotation-panel,.search-panel,.settings-panel,.toc-panel{background:var(--glass-bg-primary)!important}.reader-toolbar{background:var(--glass-bg-secondary)!important}.mobile-toolbar{background:var(--glass-bg-primary)!important}.text-primary{color:rgb(var(--fg))}.text-secondary{color:rgb(var(--muted))}.text-tertiary{color:rgba(var(--muted),.7)}[data-theme=light] .text-light-primary{color:rgb(28,32,36)}[data-theme=light] .text-light-secondary{color:rgb(110,118,126)}[data-theme=light] .text-light-tertiary{color:rgba(110,118,126,.7)}[data-theme=dark] .text-dark-primary{color:rgb(255,255,255)}[data-theme=dark] .text-dark-secondary{color:rgb(156,163,175)}[data-theme=dark] .text-dark-tertiary{color:rgba(156,163,175,.7)}.text-consistent{color:rgb(var(--fg))}.text-consistent-muted{color:rgb(var(--muted))}.glass-text{color:rgb(var(--fg));text-shadow:0 0 8px rgba(var(--bg),.8)}.text-interactive{color:rgb(var(--muted));transition:color .2s ease}.text-interactive:hover{color:rgb(var(--fg))}.dark .text-gray-900,.text-gray-900,.text-white{color:rgb(var(--fg))!important}.dark .text-gray-300,.text-gray-600{color:rgb(var(--muted))!important}.dark .text-gray-400,.text-gray-500{color:rgba(var(--muted),.8)!important}:root{--text-scale-mobile:1.0;--text-scale-tablet:1.1;--text-scale-desktop:1.2;--reading-distance-mobile:40cm;--reading-distance-tablet:50cm;--reading-distance-desktop:60cm;--text-xs:clamp(0.75rem,0.7rem + 0.25vw,0.875rem);--text-sm:clamp(0.875rem,0.8rem + 0.375vw,1rem);--text-base:clamp(1rem,0.9rem + 0.5vw,1.125rem);--text-lg:clamp(1.125rem,1rem + 0.625vw,1.25rem);--text-xl:clamp(1.25rem,1.1rem + 0.75vw,1.5rem);--text-2xl:clamp(1.5rem,1.3rem + 1vw,2rem);--text-3xl:clamp(1.875rem,1.6rem + 1.375vw,2.5rem);--text-4xl:clamp(2.25rem,1.9rem + 1.75vw,3rem);--reading-font-size:clamp(1rem,0.9rem + 0.5vw,1.125rem);--reading-line-height:clamp(1.5,1.4 + 0.2vw,1.7);--reading-letter-spacing:clamp(-0.01em,-0.005em + 0.005vw,0.01em);--reading-paragraph-spacing:clamp(1rem,0.8rem + 0.5vw,1.5rem);--ui-button-text:clamp(0.875rem,0.8rem + 0.375vw,1rem);--ui-label-text:clamp(0.75rem,0.7rem + 0.25vw,0.875rem);--ui-heading-text:clamp(1.125rem,1rem + 0.625vw,1.25rem);--line-height-tight:1.25;--line-height-normal:1.5;--line-height-relaxed:1.75;--line-height-loose:2}@media (max-width:768px){:root{--reading-font-size:clamp(1.125rem,1rem + 0.625vw,1.25rem);--reading-line-height:clamp(1.6,1.5 + 0.1vw,1.8);--reading-letter-spacing:clamp(0em,-0.005em + 0.01vw,0.02em);--reading-paragraph-spacing:clamp(1.25rem,1rem + 0.625vw,1.75rem);--ui-button-text:clamp(1rem,0.9rem + 0.5vw,1.125rem);--ui-label-text:clamp(0.875rem,0.8rem + 0.375vw,1rem)}}@media (min-width:768px) and (max-width:1024px){:root{--reading-font-size:clamp(1.0625rem,0.95rem + 0.5625vw,1.1875rem);--reading-line-height:clamp(1.55,1.45 + 0.15vw,1.75)}}@media (min-resolution:192dpi){:root{--text-base:clamp(1rem,0.95rem + 0.5vw,1.125rem);--reading-font-size:clamp(1rem,0.95rem + 0.5vw,1.125rem)}}@media (min-width:1600px){:root{--text-base:clamp(1rem,0.9rem + 0.3vw,1.125rem);--text-lg:clamp(1.125rem,1rem + 0.4vw,1.25rem);--text-xl:clamp(1.25rem,1.1rem + 0.5vw,1.5rem);--reading-font-size:clamp(1rem,0.9rem + 0.3vw,1.125rem)}}@media (prefers-color-scheme:dark){:root{--reading-font-size:clamp(1.0625rem,0.9375rem + 0.525vw,1.1875rem);--reading-letter-spacing:clamp(0.01em,0.005em + 0.005vw,0.02em)}}@media (prefers-reduced-motion:reduce){:root{--text-xs:0.75rem;--text-sm:0.875rem;--text-base:1rem;--text-lg:1.125rem;--text-xl:1.25rem;--text-2xl:1.5rem;--reading-font-size:1rem;--reading-line-height:1.6}}.text-fluid-xs{font-size:var(--text-xs)}.text-fluid-sm{font-size:var(--text-sm)}.text-fluid-base{font-size:var(--text-base)}.text-fluid-lg{font-size:var(--text-lg)}.text-fluid-xl{font-size:var(--text-xl)}.text-fluid-2xl{font-size:var(--text-2xl)}.text-fluid-3xl{font-size:var(--text-3xl)}.text-fluid-4xl{font-size:var(--text-4xl)}.text-reading{line-height:var(--reading-line-height)}.text-reading,.text-reading-comfortable{font-size:var(--reading-font-size);letter-spacing:var(--reading-letter-spacing)}.text-reading-comfortable{line-height:var(--line-height-relaxed)}.text-reading-compact{font-size:var(--reading-font-size);line-height:var(--line-height-normal);letter-spacing:var(--reading-letter-spacing)}.text-ui-button{font-size:var(--ui-button-text);font-weight:500;line-height:1.2}.text-ui-label{font-size:var(--ui-label-text);font-weight:500;line-height:1.3}.text-ui-heading{font-size:var(--ui-heading-text);font-weight:600;line-height:1.2}.reading-content{font-size:var(--reading-font-size);line-height:var(--reading-line-height);letter-spacing:var(--reading-letter-spacing)}.reading-content 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