.book-reader{--book-bg:hsl(var(--background));--book-fg:hsl(var(--foreground));--book-paper:#fdfcfa;--book-paper-dark:#1a1917;--book-shadow:#0000001a;--book-shadow-dark:#0000004d;-webkit-user-select:text;user-select:text}.book-page{background:var(--book-paper);background-image:repeating-linear-gradient(45deg,#0000,#0000 2px,#00000003 0,#00000003 4px);box-shadow:0 1px 3px var(--book-shadow),0 4px 12px var(--book-shadow),inset 0 0 30px #00000005;position:relative}.dark .book-page{background:var(--book-paper-dark);background-image:repeating-linear-gradient(45deg,#0000,#0000 2px,#ffffff03 0,#ffffff03 4px);box-shadow:0 1px 3px var(--book-shadow-dark),0 4px 12px var(--book-shadow-dark),inset 0 0 30px #ffffff05}.book-page:before{background:linear-gradient(90deg,#0000,#0000000d 1px,#00000005 2px,#0000 3px);bottom:0;content:"";position:absolute;right:0;top:0;width:3px}.dark .book-page:before{background:linear-gradient(90deg,#0000,#ffffff0d 1px,#ffffff05 2px,#0000 3px)}.book-content{color:#2c2c2c;font-family:Literata,Georgia,Times New Roman,serif;font-size:18px;line-height:1.8;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.dark .book-content{color:#e5e5e5}@media (max-width:768px){.book-content{font-size:16px;line-height:1.7}.book-page{border-radius:0;box-shadow:none}.swipe-hint{animation:swipeHint 3s ease-in-out infinite;bottom:20%;left:50%;opacity:0;pointer-events:none;position:absolute;transform:translateX(-50%)}@keyframes swipeHint{0%,to{opacity:0;transform:translateX(-50%) translateX(0)}50%{opacity:.3}25%{transform:translateX(-50%) translateX(-20px)}75%{transform:translateX(-50%) translateX(20px)}}.book-reader{-webkit-touch-callout:none}.mobile-book-container{touch-action:pan-y}.mobile-page-wrapper{overflow-x:hidden;overflow-y:auto;-webkit-overflow-scrolling:touch}.mobile-page-content{min-height:100%;padding:1rem}}@media (min-width:769px) and (max-width:1024px){.book-content{font-size:17px;line-height:1.75}}.page-turn-enter{animation:pageTurnIn .6s cubic-bezier(.4,0,.2,1)}.page-turn-exit{animation:pageTurnOut .6s cubic-bezier(.4,0,.2,1)}@keyframes pageTurnIn{0%{opacity:0;transform:rotateY(-90deg) translateZ(100px)}to{opacity:1;transform:rotateY(0) translateZ(0)}}@keyframes pageTurnOut{0%{opacity:1;transform:rotateY(0) translateZ(0)}to{opacity:0;transform:rotateY(90deg) translateZ(100px)}}.nav-area-next,.nav-area-prev{bottom:0;cursor:pointer;position:absolute;top:0;transition:background-color .2s;width:15%;z-index:10}.nav-area-prev{left:0}.nav-area-next{right:0}.nav-area-next:hover,.nav-area-prev:hover{background-color:#00000005}.dark .nav-area-next:hover,.dark .nav-area-prev:hover{background-color:#ffffff05}.swipe-feedback{background:#000c;border-radius:50px;color:#fff;font-size:14px;opacity:0;padding:12px 20px;pointer-events:none;position:fixed;top:50%;transform:translateY(-50%);transition:opacity .3s;z-index:100}.swipe-feedback.show{opacity:1}.swipe-feedback.left{left:20px}.swipe-feedback.right{right:20px}.book-progress{background:#0000001a;bottom:0;height:3px;left:0;position:fixed;right:0;z-index:50}.book-progress-bar{background:var(--primary);height:100%;transition:width .3s ease}.chapter-transition{align-items:center;background:var(--book-bg);display:flex;inset:0;justify-content:center;opacity:0;pointer-events:none;position:fixed;transition:opacity .5s;z-index:100}.chapter-transition.show{opacity:1;pointer-events:auto}.chapter-title{animation:fadeInUp .8s .3s forwards;font-size:2rem;font-weight:300;opacity:0;text-align:center;transform:translateY(20px)}@keyframes fadeInUp{to{opacity:1;transform:translateY(0)}}.reading-mode-day{--book-paper:#fdfcfa;--book-fg:#2c2c2c}.reading-mode-night{--book-paper:#1a1917;--book-fg:#e5e5e5}.reading-mode-sepia{--book-paper:#f4ecd8;--book-fg:#5c4033}.focus-mode .book-navigation{opacity:0;transition:opacity .3s}.focus-mode:focus-within .book-navigation,.focus-mode:hover .book-navigation{opacity:1}@media (prefers-reduced-motion:reduce){.chapter-title,.page-turn-enter,.page-turn-exit,.swipe-hint{animation:none!important}*{transition-duration:.01ms!important}}@media (prefers-contrast:high){.book-page{border:2px solid;box-shadow:none}.book-content{font-weight:500}}@media print{.book-navigation,.book-progress,.nav-area-next,.nav-area-prev,.swipe-hint{display:none!important}.book-page{background:#fff;box-shadow:none;page-break-inside:avoid}.book-content{color:#000}}@media (min-width:769px){.content-viewer,.enhanced-markdown{cursor:text}.content-viewer *{-webkit-user-select:text!important;user-select:text!important}.book-reader button{cursor:pointer}}.page-content{height:100%;overflow-y:auto;padding:2rem;position:relative}.enhanced-markdown{color:var(--text-primary);font-family:var(--font-serif,Georgia,serif);line-height:1.8}.enhanced-markdown p{hyphens:auto;margin-bottom:1.5rem;text-align:justify}.enhanced-markdown h1,.enhanced-markdown h2,.enhanced-markdown h3,.enhanced-markdown h4,.enhanced-markdown h5,.enhanced-markdown h6{font-family:var(--font-sans,system-ui,sans-serif);font-weight:600;line-height:1.2;margin-bottom:1rem;margin-top:2rem}.enhanced-markdown h1{font-size:2.25rem}.enhanced-markdown h2{font-size:1.875rem}.enhanced-markdown h3{font-size:1.5rem}.enhanced-markdown blockquote{border-left:4px solid var(--border-color);color:var(--text-secondary);font-style:italic;margin:1.5rem 0;padding-left:1.5rem}.enhanced-markdown code{background-color:var(--code-bg);border-radius:.25rem;font-family:var(--font-mono,"Courier New",monospace);font-size:.875em;padding:.125rem .375rem}.enhanced-markdown pre{background-color:var(--code-bg);border-radius:.5rem;margin:1.5rem 0;overflow-x:auto;padding:1rem}.enhanced-markdown pre code{background-color:initial;font-size:.875rem;padding:0}.enhanced-markdown ol,.enhanced-markdown ul{margin:1rem 0;padding-left:2rem}.enhanced-markdown li{margin-bottom:.5rem}.enhanced-markdown img{border-radius:.5rem;display:block;height:auto;margin:1.5rem auto;max-width:100%}.enhanced-markdown a{color:var(--link-color);text-decoration:underline;text-underline-offset:.125rem}.enhanced-markdown a:hover{text-decoration-thickness:2px}.enhanced-markdown table{border-collapse:collapse;margin:1.5rem 0;width:100%}.enhanced-markdown td,.enhanced-markdown th{border:1px solid var(--border-color);padding:.75rem;text-align:left}.enhanced-markdown th{background-color:var(--bg-secondary);font-weight:600}.dark .enhanced-markdown{color:var(--text-primary-dark)}.dark .enhanced-markdown blockquote{border-left-color:var(--border-color-dark);color:var(--text-secondary-dark)}.dark .enhanced-markdown code,.dark .enhanced-markdown pre{background-color:var(--code-bg-dark)}.dark .enhanced-markdown th{background-color:var(--bg-secondary-dark)}.dark .enhanced-markdown td,.dark .enhanced-markdown th{border-color:var(--border-color-dark)}.high-contrast-mode .enhanced-markdown{font-weight:500}.high-contrast-mode .enhanced-markdown p{line-height:2}:root{--font-serif:"Merriweather",Georgia,serif;--font-sans:system-ui,-apple-system,sans-serif;--font-mono:"Fira Code","Courier New",monospace;--text-primary:#1a202c;--text-secondary:#4a5568;--link-color:#3182ce;--border-color:#e2e8f0;--code-bg:#f7fafc;--bg-secondary:#f7fafc}.dark{--text-primary-dark:#f7fafc;--text-secondary-dark:#a0aec0;--link-color-dark:#63b3ed;--border-color-dark:#2d3748;--code-bg-dark:#1a202c;--bg-secondary-dark:#2d3748}