.book-header[data-astro-cid-uwvr77yi]{display:flex;flex-direction:column;gap:1.5rem;width:100%}@media (min-width: 768px){.book-header[data-astro-cid-uwvr77yi]{flex-direction:row;justify-content:space-between;align-items:flex-start}}.book-title[data-astro-cid-uwvr77yi]{font-family:var(--font-robo);font-size:2rem;font-weight:700;line-height:1.2;margin:0 0 .5rem;color:var(--color-text)}.book-author[data-astro-cid-uwvr77yi]{font-size:1.25rem;color:var(--color-text-muted);margin:0 0 .75rem}.book-years[data-astro-cid-uwvr77yi]{font-size:.875rem;display:flex;flex-direction:column;gap:.25rem;color:var(--color-text-muted);margin-bottom:1rem}.book-description[data-astro-cid-uwvr77yi]{font-size:1rem;line-height:1.6;color:var(--color-text);max-width:600px;margin:0;letter-spacing:var(--letter-spacing)}.book-actions[data-astro-cid-uwvr77yi]{display:flex;flex-direction:column;gap:.75rem;margin-top:.5rem}@media (min-width: 480px){.book-actions[data-astro-cid-uwvr77yi]{flex-direction:row;flex-wrap:wrap}}.download-button[data-astro-cid-uwvr77yi]{display:inline-flex;align-items:center;gap:.5rem;padding:.625rem 1.25rem;border-radius:.375rem;font-weight:500;text-decoration:none;transition:all .2s ease;font-size:.875rem}.epub-button[data-astro-cid-uwvr77yi]{background-color:var(--color-primary);color:#fff}.epub-button[data-astro-cid-uwvr77yi]:hover{filter:brightness(1.1);transform:translateY(-1px)}.audio-button[data-astro-cid-uwvr77yi]{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff}.audio-button[data-astro-cid-uwvr77yi]:hover{filter:brightness(1.1);transform:translateY(-1px)}.download-icon[data-astro-cid-uwvr77yi]{width:1.25rem;height:1.25rem}.dark[data-astro-cid-uwvr77yi] .book-title[data-astro-cid-uwvr77yi]{color:var(--color-text)}.dark[data-astro-cid-uwvr77yi] .book-author[data-astro-cid-uwvr77yi],.dark[data-astro-cid-uwvr77yi] .book-years[data-astro-cid-uwvr77yi]{color:var(--color-text-muted)}.dark[data-astro-cid-uwvr77yi] .book-description[data-astro-cid-uwvr77yi]{color:var(--color-text)}.dark[data-astro-cid-uwvr77yi] .audio-button[data-astro-cid-uwvr77yi]{background:linear-gradient(135deg,#5b21b6,#581c87)}[data-astro-cid-uwvr77yi][data-theme=sepia] .book-title[data-astro-cid-uwvr77yi]{color:var(--color-text)}[data-astro-cid-uwvr77yi][data-theme=sepia] .book-author[data-astro-cid-uwvr77yi],[data-astro-cid-uwvr77yi][data-theme=sepia] .book-years[data-astro-cid-uwvr77yi]{color:var(--color-text-muted)}[data-astro-cid-uwvr77yi][data-theme=sepia] .book-description[data-astro-cid-uwvr77yi]{color:var(--color-text)}[data-astro-cid-uwvr77yi][data-theme=sepia] .audio-button[data-astro-cid-uwvr77yi]{background:linear-gradient(135deg,#92400e,#78350f)}.reading-controls[data-astro-cid-wpumiy7h]{position:relative;background-color:#fff;border-radius:.5rem;border:1px solid #e2e8f0;box-shadow:0 1px 3px #0000001a;padding:1.25rem;margin-bottom:1.5rem}.controls-header[data-astro-cid-wpumiy7h]{text-align:center;font-size:.875rem;font-weight:500;color:#334155;margin-bottom:1rem}.control-section[data-astro-cid-wpumiy7h]{margin-bottom:1.25rem}.control-section[data-astro-cid-wpumiy7h]:last-child{margin-bottom:0}.control-label[data-astro-cid-wpumiy7h]{font-size:.75rem;font-weight:500;color:#64748b;margin-bottom:.5rem}.control-buttons[data-astro-cid-wpumiy7h]{display:flex;gap:.5rem}.control-button[data-astro-cid-wpumiy7h]{flex:1;display:flex;align-items:center;justify-content:center;height:2rem;width:2rem;border-radius:.375rem;border:1px solid #e2e8f0;background-color:#fff;color:#64748b;cursor:pointer;transition:all .2s}.control-button[data-astro-cid-wpumiy7h]:hover{background-color:#f8fafc;color:#0f172a}.control-button[data-astro-cid-wpumiy7h].active{background-color:#f1f5f9;color:#0f172a;font-weight:500}.theme-circle[data-astro-cid-wpumiy7h]{height:1.25rem;width:1.25rem;border-radius:50%}.light-theme[data-astro-cid-wpumiy7h]{background-color:#fff;border:1px solid #cbd5e1}.sepia-theme[data-astro-cid-wpumiy7h]{background-color:#fef3c7;border:1px solid #fbbf24}.dark-theme[data-astro-cid-wpumiy7h]{background-color:#1e293b;border:1px solid #475569}.theme-button[data-astro-cid-wpumiy7h].active .light-theme[data-astro-cid-wpumiy7h],.theme-button[data-astro-cid-wpumiy7h].active .sepia-theme[data-astro-cid-wpumiy7h],.theme-button[data-astro-cid-wpumiy7h].active .dark-theme[data-astro-cid-wpumiy7h]{border-color:var(--color-primary)}.spacing-lines[data-astro-cid-wpumiy7h]{display:flex;flex-direction:column;align-items:center;gap:2px}.spacing-normal[data-astro-cid-wpumiy7h]{gap:4px}.spacing-relaxed[data-astro-cid-wpumiy7h]{gap:6px}.spacing-line[data-astro-cid-wpumiy7h]{height:2px;width:16px;background-color:currentColor}.dark[data-astro-cid-wpumiy7h] .reading-controls[data-astro-cid-wpumiy7h]{background-color:#1e293b;border-color:#334155}.dark[data-astro-cid-wpumiy7h] .controls-header[data-astro-cid-wpumiy7h]{color:#f1f5f9}.dark[data-astro-cid-wpumiy7h] .control-label[data-astro-cid-wpumiy7h]{color:#94a3b8}.dark[data-astro-cid-wpumiy7h] .control-button[data-astro-cid-wpumiy7h]{background-color:#1e293b;border-color:#334155;color:#94a3b8}.dark[data-astro-cid-wpumiy7h] .control-button[data-astro-cid-wpumiy7h]:hover,.dark[data-astro-cid-wpumiy7h] .control-button[data-astro-cid-wpumiy7h].active{background-color:#334155;color:#f1f5f9}[data-astro-cid-wpumiy7h][data-theme=sepia] .reading-controls[data-astro-cid-wpumiy7h]{background-color:#fef3c7;border-color:#fde68a}[data-astro-cid-wpumiy7h][data-theme=sepia] .controls-header[data-astro-cid-wpumiy7h]{color:#78350f}[data-astro-cid-wpumiy7h][data-theme=sepia] .control-label[data-astro-cid-wpumiy7h]{color:#92400e}[data-astro-cid-wpumiy7h][data-theme=sepia] .control-button[data-astro-cid-wpumiy7h]{background-color:#fef3c7;border-color:#fde68a;color:#92400e}[data-astro-cid-wpumiy7h][data-theme=sepia] .control-button[data-astro-cid-wpumiy7h]:hover,[data-astro-cid-wpumiy7h][data-theme=sepia] .control-button[data-astro-cid-wpumiy7h].active{background-color:#fde68a;color:#78350f}.toc[data-astro-cid-xvrfupwn]{background:#fff;border:1px solid #e2e8f0;border-radius:.5rem;box-shadow:0 1px 3px #0000001a;margin-bottom:1.5rem;overflow:hidden}.toc-header[data-astro-cid-xvrfupwn]{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;padding:1rem;border-bottom:1px solid #e2e8f0}.toc-header[data-astro-cid-xvrfupwn] h2[data-astro-cid-xvrfupwn]{margin:0;font-size:1rem;font-weight:600;color:#334155}.toc-header[data-astro-cid-xvrfupwn] .chevron[data-astro-cid-xvrfupwn]{transition:transform .2s ease;color:#64748b}.toc[data-astro-cid-xvrfupwn]:not([open]) .chevron[data-astro-cid-xvrfupwn]{transform:rotate(180deg)}.toc-section[data-astro-cid-xvrfupwn]{display:flex;flex-direction:column}.toc-item[data-astro-cid-xvrfupwn]{padding:.5rem 1rem;text-decoration:none;color:#475569;transition:background .1s,color .1s;position:relative}.toc-item[data-astro-cid-xvrfupwn]:hover{background:#f8fafc;color:#0f172a}.toc-item[data-astro-cid-xvrfupwn].active{background:#f1f5f9;color:#0f172a;font-weight:500}.toc-item[data-astro-cid-xvrfupwn].active:before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--color-primary)}.level-3[data-astro-cid-xvrfupwn]{padding-left:2rem}.level-4[data-astro-cid-xvrfupwn]{padding-left:3rem}.level-5[data-astro-cid-xvrfupwn]{padding-left:4rem}.level-6[data-astro-cid-xvrfupwn]{padding-left:5rem}.divider[data-astro-cid-xvrfupwn]{height:1px;background:#e2e8f0;margin:.5rem 0}:root.dark .toc[data-astro-cid-xvrfupwn]{background:#1e293b;border-color:#334155}:root.dark .toc-header[data-astro-cid-xvrfupwn]{border-color:#334155}:root.dark .toc-header[data-astro-cid-xvrfupwn] h2[data-astro-cid-xvrfupwn]{color:#f1f5f9}:root.dark .chevron[data-astro-cid-xvrfupwn]{color:#94a3b8}:root.dark .toc-item[data-astro-cid-xvrfupwn]{color:#cbd5e1}:root.dark .toc-item[data-astro-cid-xvrfupwn]:hover{background:#334155;color:#f1f5f9}:root.dark .toc-item[data-astro-cid-xvrfupwn].active{background:#334155;color:#f1f5f9}:root.dark .divider[data-astro-cid-xvrfupwn]{background:#334155}[data-astro-cid-xvrfupwn][data-theme=sepia] .toc[data-astro-cid-xvrfupwn]{background:#fef3c7;border-color:#fde68a}[data-astro-cid-xvrfupwn][data-theme=sepia] .toc-header[data-astro-cid-xvrfupwn]{border-color:#fde68a}[data-astro-cid-xvrfupwn][data-theme=sepia] .toc-header[data-astro-cid-xvrfupwn] h2[data-astro-cid-xvrfupwn]{color:#78350f}[data-astro-cid-xvrfupwn][data-theme=sepia] .chevron[data-astro-cid-xvrfupwn],[data-astro-cid-xvrfupwn][data-theme=sepia] .toc-item[data-astro-cid-xvrfupwn]{color:#92400e}[data-astro-cid-xvrfupwn][data-theme=sepia] .toc-item[data-astro-cid-xvrfupwn]:hover,[data-astro-cid-xvrfupwn][data-theme=sepia] .toc-item[data-astro-cid-xvrfupwn].active{background:#fde68a;color:#78350f}[data-astro-cid-xvrfupwn][data-theme=sepia] .divider[data-astro-cid-xvrfupwn]{background:#fde68a}.toc[data-astro-cid-xvrfupwn][open]{max-height:75vh;overflow-y:auto;scrollbar-width:thin;scrollbar-color:#cbd5e1 transparent}.toc[data-astro-cid-xvrfupwn][open]::-webkit-scrollbar{width:5px}.toc[data-astro-cid-xvrfupwn][open]::-webkit-scrollbar-thumb{background:#cbd5e1;border-radius:3px}:root{--color-bg: #ffffff;--color-bg-subtle: #f8f9fa;--color-bg-hover: #f1f5f9;--color-text: #1e293b;--color-text-muted: #64748b;--color-border: #e2e8f0;--color-primary: #0f172a;--color-accent: #334155;--line-height: 1.6;--letter-spacing: .01em}[data-theme=sepia]{--color-bg: #fef3c7;--color-bg-subtle: #fef3c7;--color-bg-hover: #fde68a;--color-text: #78350f;--color-text-muted: #92400e;--color-border: #fde68a;--color-primary: #b45309}[data-theme=dark],.dark{--color-bg: #0f172a;--color-bg-subtle: #1e293b;--color-bg-hover: #334155;--color-text: #f8fafc;--color-text-muted: #cbd5e1;--color-border: #334155;--color-primary: #60a5fa}html,body{background-color:var(--color-bg);color:var(--color-text);transition:background-color .3s ease,color .3s ease}.book-container,.book-content,.book-content-wrapper,main,article{background-color:var(--color-bg);color:var(--color-text)}.text-sm{font-size:.875rem!important;line-height:1.5!important}.text-base{font-size:1rem!important;line-height:1.6!important}.text-lg{font-size:1.125rem!important;line-height:1.7!important}.leading-snug{line-height:1.375!important}.leading-relaxed{line-height:1.625!important}.leading-loose{line-height:1.875!important}.prose{color:var(--color-text)!important;max-width:none!important;font-family:Georgia,Times New Roman,Times,serif!important;letter-spacing:var(--letter-spacing)!important}.prose a{color:var(--color-primary)!important;text-decoration:none!important;transition:-webkit-text-decoration .2s!important;transition:text-decoration .2s!important;transition:text-decoration .2s,-webkit-text-decoration .2s!important}.prose a:hover{text-decoration:underline!important}.prose strong{color:var(--color-text)!important;font-weight:600!important}.prose h1,.prose h2,.prose h3,.prose h4,.prose h5,.prose h6{color:var(--color-text)!important;font-family:var(--font-robo)!important;font-weight:600!important;line-height:1.3!important}.prose h1{font-size:2rem!important;margin-top:0!important;margin-bottom:2rem!important}.prose h2{font-size:1.5rem!important;margin-top:2rem!important;margin-bottom:1rem!important;border-bottom:1px solid var(--color-border)!important;padding-bottom:.5rem!important}.prose h3{font-size:1.25rem!important;margin-top:1.5rem!important;margin-bottom:.75rem!important}.prose p{margin-top:1.25em!important;margin-bottom:1.25em!important}.prose blockquote{font-style:italic!important;color:var(--color-text-muted)!important;border-left-color:var(--color-border)!important;border-left-width:4px!important;padding-left:1rem!important;quotes:""" """ "'" "'"!important}.prose blockquote p:first-of-type:before{content:""!important}.prose blockquote p:last-of-type:after{content:""!important}.prose hr{border-color:var(--color-border)!important;margin-top:2.5em!important;margin-bottom:2.5em!important}.prose ol,.prose ul{margin-top:1.25em!important;margin-bottom:1.25em!important;padding-left:1.625em!important}.prose li{margin-top:.5em!important;margin-bottom:.5em!important}.prose li::marker{color:var(--color-text-muted)!important}.prose img{margin-top:2em!important;margin-bottom:2em!important}.prose figure{margin-top:2em!important;margin-bottom:2em!important}.prose figure>*{margin-top:0!important;margin-bottom:0!important}.prose figcaption{color:var(--color-text-muted)!important;font-size:.875rem!important;line-height:1.4285714!important;margin-top:.8571429em!important;text-align:center!important}.prose h1+p,.prose h2+p,.prose h3+p{margin-top:.75em!important}.reading-progress,.dark .reading-progress,[data-theme=sepia] .reading-progress{background-color:var(--color-primary)}.prose{word-wrap:break-word!important;overflow-wrap:break-word!important;max-width:100%!important;overflow-x:hidden!important}.prose p,.prose li,.prose blockquote{word-wrap:break-word!important;overflow-wrap:break-word!important;white-space:normal!important;overflow-x:hidden!important}.book-content{overflow-x:hidden!important;max-width:100%!important}.prose pre,.prose code{white-space:pre-wrap!important;word-wrap:break-word!important;overflow-wrap:break-word!important;max-width:100%!important}.book-container[data-astro-cid-l3js6ivh]{max-width:1200px;margin:0 auto;padding:0 1rem}.book-header-container[data-astro-cid-l3js6ivh]{display:flex;flex-direction:column;gap:1.5rem;margin:2rem 0}@media (min-width: 768px){.book-header-container[data-astro-cid-l3js6ivh]{flex-direction:row;align-items:flex-start}}.book-cover-container[data-astro-cid-l3js6ivh]{width:100%;max-width:200px;margin:0 auto}@media (min-width: 768px){.book-cover-container[data-astro-cid-l3js6ivh]{margin:0}}.book-cover[data-astro-cid-l3js6ivh]{position:relative;width:100%;box-shadow:0 10px 15px -3px #0000001a,0 4px 6px -2px #0000000d;border-radius:.5rem;overflow:hidden}.book-cover[data-astro-cid-l3js6ivh] img[data-astro-cid-l3js6ivh]{width:100%;height:auto;-o-object-fit:cover;object-fit:cover;display:block}.reading-progress[data-astro-cid-l3js6ivh]{position:fixed;top:0;left:0;height:3px;background-color:var(--color-primary);width:0%;z-index:9999;transition:width .1s linear}.mobile-toc-toggle[data-astro-cid-l3js6ivh]{position:fixed;bottom:1.5rem;left:1.5rem;display:flex;align-items:center;gap:.5rem;padding:.75rem 1.25rem;background-color:var(--color-primary);color:#fff;border-radius:9999px;border:none;box-shadow:0 4px 10px #0003;z-index:40;font-size:.875rem;font-weight:500;cursor:pointer;transition:all .2s ease}@media (min-width: 768px){.mobile-toc-toggle[data-astro-cid-l3js6ivh]{display:none}}.mobile-toc-toggle[data-astro-cid-l3js6ivh]:hover{transform:translateY(-2px);box-shadow:0 6px 15px #00000040}.mobile-toc-toggle[data-astro-cid-l3js6ivh]:active{transform:translateY(0)}.dark[data-astro-cid-l3js6ivh] .mobile-toc-toggle[data-astro-cid-l3js6ivh]{background-color:#1e293b;color:#f1f5f9;border-color:#334155}[data-astro-cid-l3js6ivh][data-theme=sepia] .mobile-toc-toggle[data-astro-cid-l3js6ivh]{background-color:#fef3c7;color:#78350f;border-color:#fde68a}.book-content-wrapper[data-astro-cid-l3js6ivh]{display:flex;flex-direction:column;margin:2rem 0}@media (min-width: 768px){.book-content-wrapper[data-astro-cid-l3js6ivh]{flex-direction:row;gap:2rem}}.book-sidebar[data-astro-cid-l3js6ivh]{width:280px;flex-shrink:0}@media (max-width: 767px){.book-sidebar[data-astro-cid-l3js6ivh]{position:fixed;top:0;left:0;bottom:0;width:300px;background-color:#fff;z-index:50;overflow-y:auto;height:100vh;transform:translate(-100%);visibility:hidden;transition:transform .3s ease,visibility .3s ease}.book-sidebar[data-astro-cid-l3js6ivh].sidebar-open{transform:translate(0);visibility:visible;box-shadow:4px 0 10px #0000001a}}.sidebar-header[data-astro-cid-l3js6ivh]{display:flex;justify-content:space-between;align-items:center;padding:1rem;border-bottom:1px solid #e2e8f0}.sidebar-header[data-astro-cid-l3js6ivh] h2[data-astro-cid-l3js6ivh]{font-size:1.125rem;font-weight:600;margin:0}.sidebar-header[data-astro-cid-l3js6ivh] button[data-astro-cid-l3js6ivh]{background:none;border:none;color:#64748b;cursor:pointer;padding:.25rem;border-radius:.25rem}#close-sidebar[data-astro-cid-l3js6ivh]{background:none;border:none;color:#64748b;cursor:pointer;padding:.5rem;border-radius:.25rem;display:flex;align-items:center;justify-content:center;transition:all .2s ease;position:relative;z-index:1}#close-sidebar[data-astro-cid-l3js6ivh]:hover{background-color:#f1f5f9;color:#334155;transform:scale(1.1)}#close-sidebar[data-astro-cid-l3js6ivh]:active{transform:scale(.95)}.dark[data-astro-cid-l3js6ivh] #close-sidebar[data-astro-cid-l3js6ivh]{color:#94a3b8}.dark[data-astro-cid-l3js6ivh] #close-sidebar[data-astro-cid-l3js6ivh]:hover{background-color:#334155;color:#f1f5f9}[data-astro-cid-l3js6ivh][data-theme=sepia] #close-sidebar[data-astro-cid-l3js6ivh]{color:#92400e}[data-astro-cid-l3js6ivh][data-theme=sepia] #close-sidebar[data-astro-cid-l3js6ivh]:hover{background-color:#fde68a;color:#78350f}.sidebar-content[data-astro-cid-l3js6ivh]{padding:1rem}@media (min-width: 768px){.sidebar-content[data-astro-cid-l3js6ivh]{position:sticky;top:2rem;max-height:calc(100vh - 4rem);overflow-y:auto;scrollbar-width:thin;scrollbar-color:#cbd5e1 transparent}.sidebar-content[data-astro-cid-l3js6ivh]::-webkit-scrollbar{width:5px}.sidebar-content[data-astro-cid-l3js6ivh]::-webkit-scrollbar-track{background:transparent}.sidebar-content[data-astro-cid-l3js6ivh]::-webkit-scrollbar-thumb{background-color:#cbd5e1;border-radius:3px}}.book-content[data-astro-cid-l3js6ivh]{flex:1;font-family:var(--ff-display);margin-bottom:4rem}.dark[data-astro-cid-l3js6ivh] .sidebar-header[data-astro-cid-l3js6ivh]{border-color:#334155}.dark[data-astro-cid-l3js6ivh] .sidebar-header[data-astro-cid-l3js6ivh] button[data-astro-cid-l3js6ivh]:hover{background-color:#334155;color:#f1f5f9}.dark[data-astro-cid-l3js6ivh] .book-sidebar[data-astro-cid-l3js6ivh]{background-color:#1e293b}[data-astro-cid-l3js6ivh][data-theme=sepia] .sidebar-header[data-astro-cid-l3js6ivh]{border-color:#fde68a}[data-astro-cid-l3js6ivh][data-theme=sepia] .sidebar-header[data-astro-cid-l3js6ivh] button[data-astro-cid-l3js6ivh]:hover{background-color:#fde68a;color:#78350f}[data-astro-cid-l3js6ivh][data-theme=sepia] .book-sidebar[data-astro-cid-l3js6ivh]{background-color:#fef3c7}.prose[data-astro-cid-l3js6ivh]{max-width:100%;font-family:var(--ff-display)}.prose[data-astro-cid-l3js6ivh] h1[data-astro-cid-l3js6ivh],.prose[data-astro-cid-l3js6ivh] h2[data-astro-cid-l3js6ivh],.prose[data-astro-cid-l3js6ivh] h3[data-astro-cid-l3js6ivh],.prose[data-astro-cid-l3js6ivh] h4[data-astro-cid-l3js6ivh],.prose[data-astro-cid-l3js6ivh] h5[data-astro-cid-l3js6ivh],.prose[data-astro-cid-l3js6ivh] h6[data-astro-cid-l3js6ivh]{font-family:var(--ff-sans);scroll-margin-top:5rem}.prose[data-astro-cid-l3js6ivh] h2[data-astro-cid-l3js6ivh]{margin-top:2.5rem;margin-bottom:1.25rem}.prose[data-astro-cid-l3js6ivh] h3[data-astro-cid-l3js6ivh]{margin-top:2rem;margin-bottom:1rem}.prose[data-astro-cid-l3js6ivh] blockquote[data-astro-cid-l3js6ivh]{font-style:italic;border-left-width:4px;border-left-color:#cbd5e1;padding-left:1.5rem}.dark[data-astro-cid-l3js6ivh] .prose[data-astro-cid-l3js6ivh] blockquote[data-astro-cid-l3js6ivh]{border-left-color:#475569}[data-astro-cid-l3js6ivh][data-theme=sepia] .prose[data-astro-cid-l3js6ivh] blockquote[data-astro-cid-l3js6ivh]{border-left-color:#fde68a}