.BookNavigator-module__kyd2ia__navigator{--navigator-muted:var(--color-olive-600);--navigator-sticky-top:calc(var(--scroll-padding-top,4rem) + 12px);--navigator-frame:color-mix(in oklab, var(--folio-ink) 3%, var(--folio-ground));--navigator-paper-inset:32px;--navigator-part-fill:color-mix(in oklab, var(--reader-accent) 5%, var(--folio-paper));--navigator-chapter-fill:color-mix(in oklab, var(--reader-accent) 12%, var(--folio-paper));--navigator-section-fill:color-mix(in oklab, var(--reader-accent) 16%, var(--folio-paper));--navigator-on-accent:var(--folio-paper);min-width:0}.dark .BookNavigator-module__kyd2ia__navigator{--navigator-muted:var(--color-olive-400);--navigator-on-accent:var(--folio-ground)}.BookNavigator-module__kyd2ia__navigator :is(a,button,summary):focus-visible{outline:2px solid var(--reader-accent);outline-offset:3px}.BookNavigator-module__kyd2ia__bookHeader:hover,.BookNavigator-module__kyd2ia__chapterLink:not([aria-current]):hover,.BookNavigator-module__kyd2ia__bookTravel a:hover,.BookNavigator-module__kyd2ia__partTree summary:hover{color:var(--reader-accent);background:var(--reader-accent-hover)}.BookNavigator-module__kyd2ia__bookHeader{color:var(--folio-ink);border-radius:5px;align-items:center;gap:14px;margin:-6px;padding:10px;display:flex}.BookNavigator-module__kyd2ia__bookHeader>img{outline:1px solid var(--folio-line);border-radius:2px;flex:none;width:52px;height:auto}.BookNavigator-module__kyd2ia__bookHeader>span{gap:5px;min-width:0;display:grid}.BookNavigator-module__kyd2ia__bookHeader strong{font:500 14px/1.4 var(--font-sans)}.BookNavigator-module__kyd2ia__bookHeader small,.BookNavigator-module__kyd2ia__bookHeader>span>span{color:var(--navigator-muted);font:11px/1.5 var(--font-sans)}.BookNavigator-module__kyd2ia__bookHeader>span>span{text-underline-offset:3px;text-decoration:underline}.BookNavigator-module__kyd2ia__purchaseTop,.BookNavigator-module__kyd2ia__purchaseButton{min-width:0;font:500 11px/1.5 var(--font-sans);border-radius:999px;align-items:center;gap:7px;display:flex}.BookNavigator-module__kyd2ia__purchaseTop{background:var(--reader-accent-hover);min-height:36px;box-shadow:inset 0 0 0 1px color-mix(in oklab, var(--reader-accent) 20%, transparent);color:var(--reader-accent);margin-top:16px;padding:8px 12px}.BookNavigator-module__kyd2ia__purchaseTop:hover{background:var(--navigator-section-fill)}.BookNavigator-module__kyd2ia__purchaseTop>span{flex:1}.BookNavigator-module__kyd2ia__purchaseTop small{font:inherit;white-space:nowrap}.BookNavigator-module__kyd2ia__purchaseTop>svg,.BookNavigator-module__kyd2ia__purchaseButton>svg{flex:none;width:14px;height:14px}.BookNavigator-module__kyd2ia__purchaseCard{border:1px solid var(--folio-line);background:var(--folio-soft);border-radius:9px;gap:14px;margin-top:24px;padding:18px;display:grid}.BookNavigator-module__kyd2ia__purchaseBook{align-items:center;gap:14px;min-width:0;display:flex}.BookNavigator-module__kyd2ia__purchaseBook>img{outline:1px solid var(--folio-line);width:72px;height:auto;box-shadow:0 8px 16px color-mix(in oklab, var(--folio-ink) 12%, transparent);border-radius:3px;flex:none}.BookNavigator-module__kyd2ia__purchaseBook>div{gap:6px;min-width:0;display:grid}.BookNavigator-module__kyd2ia__purchaseBook small,.BookNavigator-module__kyd2ia__purchaseCard>small{color:var(--navigator-muted);font:10px/1.5 var(--font-sans)}.BookNavigator-module__kyd2ia__purchaseBook strong{font:500 16px/1.35 var(--font-sans)}.BookNavigator-module__kyd2ia__purchaseCard>p{color:var(--navigator-muted);font:11px/1.6 var(--font-sans);margin:0}.BookNavigator-module__kyd2ia__purchaseButton{background:var(--reader-accent);min-height:44px;color:var(--navigator-on-accent);justify-content:center;padding:10px 12px;font-size:12px}.BookNavigator-module__kyd2ia__purchaseButton:hover{background:color-mix(in oklab, var(--reader-accent) 85%, var(--folio-ink))}.BookNavigator-module__kyd2ia__purchaseButton>svg:last-child{margin-left:auto}.BookNavigator-module__kyd2ia__purchaseButton>span{text-align:center;flex:1}.BookNavigator-module__kyd2ia__purchaseCard>small{text-align:center}.BookNavigator-module__kyd2ia__bookPosition{border-top:1px solid var(--folio-line);color:var(--navigator-muted);font:11px/1.6 var(--font-sans);margin:18px 0 12px;padding-top:16px}.BookNavigator-module__kyd2ia__bookPosition strong{font-weight:600}.BookNavigator-module__kyd2ia__layout{grid-template-columns:280px minmax(0,1fr);align-items:start;gap:28px;display:grid}.BookNavigator-module__kyd2ia__rail{top:var(--navigator-sticky-top);min-width:0;max-height:calc(100dvh - var(--navigator-sticky-top) - 16px);border:1px solid var(--folio-line);background:var(--folio-paper);border-radius:10px;flex-direction:column;display:flex;position:sticky;overflow:hidden}.BookNavigator-module__kyd2ia__identity{border-bottom:1px solid var(--folio-line);background:var(--folio-paper);flex:none;padding:20px 14px 16px}.BookNavigator-module__kyd2ia__railContents{overscroll-behavior:contain;scrollbar-width:thin;min-height:0;padding:6px 14px 20px;scroll-padding-block:16px;overflow-y:auto}.BookNavigator-module__kyd2ia__identity .BookNavigator-module__kyd2ia__bookPosition,.BookNavigator-module__kyd2ia__drawerIdentity .BookNavigator-module__kyd2ia__bookPosition{border:0;margin:16px 0 0;padding:0}.BookNavigator-module__kyd2ia__partTree details{border-bottom:1px solid color-mix(in oklab, var(--folio-line) 65%, transparent)}.BookNavigator-module__kyd2ia__partTree details:last-child{border-bottom:0}.BookNavigator-module__kyd2ia__partTree summary{cursor:pointer;color:var(--navigator-muted);border-radius:6px;grid-template-columns:minmax(0,1fr) 16px;align-items:center;gap:2px 8px;padding:12px 6px;list-style:none;display:grid}.BookNavigator-module__kyd2ia__partTree summary::-webkit-details-marker{display:none}.BookNavigator-module__kyd2ia__partTree summary>span:first-child{white-space:nowrap;color:var(--navigator-muted);font:9px/1.4 var(--font-mono), monospace;grid-area:1/1}.BookNavigator-module__kyd2ia__partTree summary strong{min-width:0;font:500 12px/1.5 var(--font-sans);grid-area:2/1}.BookNavigator-module__kyd2ia__partTree details[data-current-part]>summary{background:var(--navigator-part-fill);color:var(--reader-accent)}.BookNavigator-module__kyd2ia__partTree details[data-current-part]>summary>span:first-child{color:var(--reader-accent)}.BookNavigator-module__kyd2ia__disclosure{font:18px/1 var(--font-sans);grid-area:1/2/span 2;justify-self:end}.BookNavigator-module__kyd2ia__partTree details[open]>summary .BookNavigator-module__kyd2ia__disclosure{transform:rotate(45deg)}.BookNavigator-module__kyd2ia__chapterList{margin:0;padding:0;list-style:none}.BookNavigator-module__kyd2ia__chapterLink{color:var(--navigator-muted);border-radius:6px;align-items:baseline;gap:10px;margin-block:3px;padding:10px 8px;display:flex}.BookNavigator-module__kyd2ia__chapterNumber{font:10px/1.6 var(--font-mono), monospace;color:var(--navigator-muted);flex:none}.BookNavigator-module__kyd2ia__chapterLink>span:nth-child(2){min-width:0}.BookNavigator-module__kyd2ia__chapterLink strong{font:400 12px/1.6 var(--font-sans);display:block}.BookNavigator-module__kyd2ia__chapterLink small{color:var(--reader-accent);font:10px/1.5 var(--font-sans);margin-top:3px;display:block}[data-current-chapter]>.BookNavigator-module__kyd2ia__chapterLink{background:var(--navigator-chapter-fill);color:var(--folio-ink);box-shadow:none}[data-current-chapter]>.BookNavigator-module__kyd2ia__chapterLink strong{font-weight:600}.BookNavigator-module__kyd2ia__currentDot{background:var(--reader-accent);border-radius:50%;flex:none;align-self:center;width:6px;height:6px;margin-left:auto}.BookNavigator-module__kyd2ia__nestedOutline{margin:8px 0 16px}.BookNavigator-module__kyd2ia__navigator nav[data-section-outline]>ol>li[data-active=true]>a:first-child{background:var(--reader-accent);color:var(--navigator-on-accent);box-shadow:none;font-weight:600}.BookNavigator-module__kyd2ia__navigator nav[data-section-outline]>ol>li[data-active=true]>a:first-child>span:first-child{color:inherit;opacity:1}.BookNavigator-module__kyd2ia__navigator nav[data-section-outline]>ol>li[data-active=true]>a:first-child small{color:inherit}.BookNavigator-module__kyd2ia__navigator nav[data-section-outline]>ol>li[data-active=true]>a+a{color:var(--navigator-on-accent);background:0 0}.BookNavigator-module__kyd2ia__navigator nav[data-section-outline] ul a[aria-current=location]{background:var(--navigator-section-fill);color:var(--reader-accent);font-weight:600}.BookNavigator-module__kyd2ia__bookTravel{gap:8px;margin-top:20px;display:grid}.BookNavigator-module__kyd2ia__bookTravel a{border:1px solid var(--folio-line);color:var(--folio-ink);border-radius:5px;gap:4px;padding:10px;display:grid}.BookNavigator-module__kyd2ia__bookTravel span{color:var(--navigator-muted);font:10px/1.5 var(--font-sans)}.BookNavigator-module__kyd2ia__bookTravel strong{font:400 11px/1.6 var(--font-sans)}.BookNavigator-module__kyd2ia__main,.BookNavigator-module__kyd2ia__content{min-width:0}.BookNavigator-module__kyd2ia__partHeading{align-items:baseline;gap:12px;margin:0 0 16px;padding-left:8px;display:flex}.BookNavigator-module__kyd2ia__partHeading>span{color:var(--navigator-muted);font:11px/1.5 var(--font-sans)}.BookNavigator-module__kyd2ia__partHeading strong{font:500 15px/1.5 var(--font-sans)}.BookNavigator-module__kyd2ia__modeBar{top:var(--navigator-sticky-top);z-index:25;border:1px solid var(--folio-line);background:var(--folio-paper);min-width:0;box-shadow:0 8px 0 var(--folio-ground);border-radius:8px;margin-bottom:16px;padding:16px 24px;position:sticky}.BookNavigator-module__kyd2ia__toolbarExpanded{justify-content:space-between;align-items:center;gap:20px;min-width:0;display:flex}.BookNavigator-module__kyd2ia__compactToolbar,.BookNavigator-module__kyd2ia__collapseToolbar,.BookNavigator-module__kyd2ia__toolbarSpacer{display:none}.BookNavigator-module__kyd2ia__modeBar:before{background:var(--folio-ground);pointer-events:none;content:"";height:12px;position:absolute;top:-13px;left:-1px;right:-1px}.BookNavigator-module__kyd2ia__location{flex:1;gap:6px;min-width:0;display:grid}.BookNavigator-module__kyd2ia__location>strong{min-width:0;font:500 12px/1.5 var(--font-sans);text-wrap:pretty;align-items:baseline;gap:8px;display:flex}.BookNavigator-module__kyd2ia__locationChapterNumber{color:var(--navigator-muted);flex:none;font-size:10px}.BookNavigator-module__kyd2ia__locationDetails{flex-wrap:wrap;align-items:center;gap:8px 10px;min-width:0;display:flex}.BookNavigator-module__kyd2ia__locationDetails>span{color:var(--navigator-muted);font:11px/1.6 var(--font-sans);flex:72px}.BookNavigator-module__kyd2ia__locationDetailCompact{display:none}.BookNavigator-module__kyd2ia__toolbarExpanded>section{border:0;flex:0 0 254px;margin:0;padding:0;position:static}.BookNavigator-module__kyd2ia__toolbarExpanded>section>p{display:none}.BookNavigator-module__kyd2ia__modeBar nav[aria-label=Reading\ view]{border-color:#0000}.BookNavigator-module__kyd2ia__readerSurface{border:8px solid var(--navigator-frame);background:var(--folio-paper);min-width:0;box-shadow:none;border-radius:10px}.BookNavigator-module__kyd2ia__readerSurface>footer{padding:0 var(--navigator-paper-inset) var(--navigator-paper-inset);margin:24px 0 0}.BookNavigator-module__kyd2ia__readerSurface>.BookNavigator-module__kyd2ia__modeBar{top:calc(var(--navigator-sticky-top) + 8px);padding:16px var(--navigator-paper-inset);border:0;border-bottom:1px solid var(--folio-line);box-shadow:0 -8px 0 var(--navigator-frame);border-radius:2px 2px 0 0;margin:0}.BookNavigator-module__kyd2ia__readerSurface>.BookNavigator-module__kyd2ia__modeBar:before{top:-20px;left:-8px;right:-8px}.BookNavigator-module__kyd2ia__readerSurface [data-folio-paper-frame]{background:0 0;border-radius:0;margin:0;padding:0}.BookNavigator-module__kyd2ia__readerSurface [data-folio-paper]{padding-top:28px;padding-inline:var(--navigator-paper-inset);box-shadow:none;background:0 0;border-radius:0}.BookNavigator-module__kyd2ia__navigator #article-mdx-content :is(h2,h3)[id]{scroll-margin-top:calc(var(--navigator-toolbar-height,80px) + 3rem)}.BookNavigator-module__kyd2ia__unavailable{color:var(--navigator-muted);font:11px/1.6 var(--font-sans);gap:8px;padding:10px 8px;display:flex}.BookNavigator-module__kyd2ia__unavailable small{font-size:10px}.BookNavigator-module__kyd2ia__mobileBookTrigger,.BookNavigator-module__kyd2ia__navigator .BookNavigator-module__kyd2ia__readerSurface>details{display:none}.BookNavigator-module__kyd2ia__mobileBookDialog{width:100%;max-width:none;height:100dvh;max-height:none;color:var(--folio-ink);background:0 0;border:0;margin:0;padding:0;position:fixed;inset:0;overflow:hidden}.BookNavigator-module__kyd2ia__mobileBookDialog[open]{display:flex}.BookNavigator-module__kyd2ia__mobileBookDialog::backdrop{background:#00000073}.BookNavigator-module__kyd2ia__drawerPanel{width:min(360px,100vw - 40px);height:100%;padding-top:env(safe-area-inset-top,0px);border-right:1px solid var(--folio-line);background:var(--folio-paper);flex-direction:column;display:flex;box-shadow:8px 0 40px #00000026}.BookNavigator-module__kyd2ia__mobileBookDialog[open] .BookNavigator-module__kyd2ia__drawerPanel{animation:.24s cubic-bezier(.2,.7,.2,1) BookNavigator-module__kyd2ia__book-drawer-enter}.BookNavigator-module__kyd2ia__drawerHeader{border-bottom:1px solid var(--folio-line);flex:none;justify-content:space-between;align-items:center;gap:16px;padding:8px 12px 8px 20px;display:flex}.BookNavigator-module__kyd2ia__drawerHeader h2{font:600 14px/1.5 var(--font-sans);margin:0}.BookNavigator-module__kyd2ia__drawerHeader button{width:44px;height:44px;color:var(--navigator-muted);cursor:pointer;background:0 0;border:0;border-radius:6px;place-items:center;display:grid}.BookNavigator-module__kyd2ia__drawerHeader button:hover{background:var(--folio-soft);color:var(--folio-ink)}.BookNavigator-module__kyd2ia__drawerIdentity{border-bottom:1px solid var(--folio-line);flex:none;padding:20px 20px 16px}.BookNavigator-module__kyd2ia__drawerScroll{overscroll-behavior:contain;scrollbar-width:thin;min-height:0;padding:8px 14px calc(20px + env(safe-area-inset-bottom,0px));scroll-padding-block:16px;overflow-y:auto}@keyframes BookNavigator-module__kyd2ia__book-drawer-enter{0%{transform:translate(-100%)}to{transform:translate(0)}}@media (prefers-reduced-motion:reduce){.BookNavigator-module__kyd2ia__mobileBookDialog[open] .BookNavigator-module__kyd2ia__drawerPanel{animation:none}}@media (min-width:961px) and (max-width:1100px){.BookNavigator-module__kyd2ia__navigator{--navigator-paper-inset:28px}}@media (max-width:1050px){.BookNavigator-module__kyd2ia__layout{grid-template-columns:250px minmax(0,1fr);gap:20px}.BookNavigator-module__kyd2ia__toolbarExpanded{flex-wrap:wrap;gap:12px}.BookNavigator-module__kyd2ia__toolbarExpanded>section,.BookNavigator-module__kyd2ia__location{flex-basis:100%}}@media (max-width:960px){.BookNavigator-module__kyd2ia__layout{display:block}.BookNavigator-module__kyd2ia__rail{display:none}.BookNavigator-module__kyd2ia__mobileBookTrigger{cursor:pointer;min-height:32px;color:var(--navigator-muted);white-space:nowrap;font:500 11px/1.6 var(--font-sans);background:0 0;border:0;border-radius:4px;flex:none;justify-content:center;align-items:center;gap:6px;margin-left:auto;padding:6px 0 6px 6px;display:inline-flex;position:relative}.BookNavigator-module__kyd2ia__mobileBookTrigger>svg{flex:none;width:14px;height:14px}.BookNavigator-module__kyd2ia__mobileBookTrigger:after{content:"";position:absolute;inset:-6px -4px}.BookNavigator-module__kyd2ia__mobileBookTrigger:is(:hover,:focus-visible){color:var(--folio-ink)}.BookNavigator-module__kyd2ia__mobileBookTrigger:is(:hover,:focus-visible)>span{text-underline-offset:3px;text-decoration:underline}.BookNavigator-module__kyd2ia__location{gap:4px}.BookNavigator-module__kyd2ia__locationDetailFull{display:none}.BookNavigator-module__kyd2ia__locationDetailCompact{display:inline}.BookNavigator-module__kyd2ia__modeBar{padding:12px}.BookNavigator-module__kyd2ia__toolbarExpanded{row-gap:18px}.BookNavigator-module__kyd2ia__toolbarExpanded .BookNavigator-module__kyd2ia__location>strong{padding-right:28px}.BookNavigator-module__kyd2ia__collapseToolbar{width:32px;height:32px;color:var(--navigator-muted);cursor:pointer;background:0 0;border:0;border-radius:5px;place-items:center;display:grid;position:absolute;top:8px;right:8px}.BookNavigator-module__kyd2ia__collapseToolbar:hover{background:var(--folio-soft);color:var(--folio-ink)}.BookNavigator-module__kyd2ia__collapseToolbar:after{content:"";position:absolute;inset:-6px}.BookNavigator-module__kyd2ia__modeBar[data-reader-collapsed=true] .BookNavigator-module__kyd2ia__toolbarExpanded{display:none}.BookNavigator-module__kyd2ia__modeBar[data-reader-collapsed=true] .BookNavigator-module__kyd2ia__compactToolbar{display:flex}.BookNavigator-module__kyd2ia__compactToolbar{width:100%;min-height:36px;color:var(--folio-ink);text-align:left;cursor:pointer;background:0 0;border:0;border-radius:4px;align-items:center;gap:12px;padding:4px 0}.BookNavigator-module__kyd2ia__compactSummary{min-width:0;font:11px/1.5 var(--font-sans);flex:1;align-items:baseline;gap:10px;display:flex}.BookNavigator-module__kyd2ia__compactSummary>span,.BookNavigator-module__kyd2ia__compactSummary small{color:var(--navigator-muted);font:10px/1.5 var(--font-sans);flex:none}.BookNavigator-module__kyd2ia__compactSummary strong{text-overflow:ellipsis;white-space:nowrap;flex:1;min-width:0;font-weight:500;overflow:hidden}.BookNavigator-module__kyd2ia__compactToolbar>svg{flex:none}.BookNavigator-module__kyd2ia__toolbarSpacer{pointer-events:none;height:0;display:block}.BookNavigator-module__kyd2ia__readerSurface>.BookNavigator-module__kyd2ia__modeBar{padding-block:14px}.BookNavigator-module__kyd2ia__readerSurface>.BookNavigator-module__kyd2ia__modeBar[data-reader-collapsed=true]{padding:4px 12px}.BookNavigator-module__kyd2ia__readerSurface{padding-bottom:var(--navigator-bottom-space,0px)}.BookNavigator-module__kyd2ia__readerSurface>.BookNavigator-module__kyd2ia__modeBar[data-reader-docked=true]{z-index:90;padding:14px max(16px, env(safe-area-inset-right,0px)) calc(14px + env(safe-area-inset-bottom,0px)) max(16px, env(safe-area-inset-left,0px));border:1px solid var(--folio-line);box-shadow:0 -6px 24px color-mix(in oklab, var(--folio-ink) 10%, transparent);border-bottom:0;border-radius:10px 10px 0 0;position:fixed;inset:auto 0 0}.BookNavigator-module__kyd2ia__readerSurface>.BookNavigator-module__kyd2ia__modeBar[data-reader-docked=true]:before{display:none}.BookNavigator-module__kyd2ia__readerSurface>.BookNavigator-module__kyd2ia__modeBar[data-reader-docked=true][data-reader-collapsed=true]{padding-top:4px;padding-bottom:calc(12px + env(safe-area-inset-bottom,0px))}.BookNavigator-module__kyd2ia__modeBar[data-reader-docked=true] .BookNavigator-module__kyd2ia__collapseToolbar>svg{transform:rotate(180deg)}.BookNavigator-module__kyd2ia__readerSurface [data-folio-paper]{padding-top:20px}.BookNavigator-module__kyd2ia__navigator .BookNavigator-module__kyd2ia__readerSurface>details{border:0;border-bottom:1px solid var(--folio-line);background:var(--folio-paper);margin:0;padding-inline:16px;display:block;position:static}}@media (max-width:640px){.BookNavigator-module__kyd2ia__navigator{--navigator-paper-inset:18px}}@media print{.BookNavigator-module__kyd2ia__rail,.BookNavigator-module__kyd2ia__modeBar,.BookNavigator-module__kyd2ia__toolbarSpacer,.BookNavigator-module__kyd2ia__mobileBookTrigger,.BookNavigator-module__kyd2ia__mobileBookDialog,.BookNavigator-module__kyd2ia__navigator .BookNavigator-module__kyd2ia__readerSurface>details{display:none}.BookNavigator-module__kyd2ia__layout{display:block}.BookNavigator-module__kyd2ia__readerSurface{box-shadow:none;border:0;padding-bottom:0}.BookNavigator-module__kyd2ia__readerSurface [data-folio-paper]{padding:0}}