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.2s}.reader-toggle:hover,.reader-toggle[aria-expanded=true]{color:var(--chrome-ink)}.reader-icon,.theme-toggle{width:34px;height:34px;color:var(--chrome-muted);cursor:pointer;background:0 0;border:0;border-radius:50%;place-items:center;transition:color .2s,background .2s;display:grid}.reader-icon:hover:not(:disabled),.theme-toggle:hover{color:var(--chrome-ink);background:var(--chrome-hover)}.reader-icon:disabled{cursor:progress}.reader-back:focus-visible,.reader-toggle:focus-visible,.reader-icon:focus-visible,.theme-toggle:focus-visible{outline:1px solid var(--chrome-rule-strong);outline-offset:2px}.theme-icon[data-for=dark],[data-theme=dark] .theme-icon[data-for=light]{display:none}[data-theme=dark] .theme-icon[data-for=dark]{display:block}.logo-mark{flex:none}.logo-mark[data-for=dark],[data-theme=dark] .logo-mark[data-for=light]{display:none}[data-theme=dark] .logo-mark[data-for=dark]{display:block}.reader-spinner{border:1.5px solid var(--chrome-rule);border-top-color:var(--accent);border-radius:50%;width:14px;height:14px;animation:.7s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.reader-stage-wrap{padding:var(--stage-top,52px) 16px var(--stage-bottom,44px);touch-action:pan-x pinch-zoom;flex:1;justify-content:center;align-items:center;min-width:0;min-height:0;transition:margin-left .24s;display:flex}.reader-shell.toc-docked .reader-stage-wrap{margin-left:var(--toc-w,268px)}.reader-stage{background:var(--paper);box-shadow:0 34px 60px -26px var(--shadow-cast), 0 2px 10px var(--shadow-contact);border-radius:2px;position:relative;overflow:hidden}.spread-layer{will-change:transform;z-index:1;position:absolute;inset:0}.spread-outgoing{z-index:2}.spread-layer.enter-forward{animation:.4s cubic-bezier(.45,0,.55,1) both spread-enter-forward}.spread-layer.exit-forward{animation:.4s cubic-bezier(.45,0,.55,1) both spread-exit-forward}.spread-layer.enter-backward{animation:.4s cubic-bezier(.45,0,.55,1) both spread-enter-backward}.spread-layer.exit-backward{animation:.4s cubic-bezier(.45,0,.55,1) both spread-exit-backward}@keyframes spread-enter-forward{0%{transform:translate(100%)}to{transform:translate(0)}}@keyframes spread-exit-forward{0%{transform:translate(0)}to{transform:translate(-100%)}}@keyframes spread-enter-backward{0%{transform:translate(-100%)}to{transform:translate(0)}}@keyframes spread-exit-backward{0%{transform:translate(0)}to{transform:translate(100%)}}.sheet{background:var(--paper);box-shadow:inset 0 0 0 1px var(--rule-faint);border-radius:2px;position:absolute;inset:0}.spine{background:var(--rule);z-index:2;width:1px;position:absolute;top:0;bottom:0;left:50%;transform:translate(-.5px)}.spine:before{content:"";width:calc(var(--pad-spine,32px) * 1.7);background:linear-gradient(90deg, rgb(var(--gutter-rgb) / 0) 0%, rgb(var(--gutter-rgb) / calc(.045 * var(--gutter-strength))) 45%, rgb(var(--gutter-rgb) / calc(.075 * var(--gutter-strength))) 50%, rgb(var(--gutter-rgb) / calc(.045 * var(--gutter-strength))) 55%, rgb(var(--gutter-rgb) / 0) 100%);position:absolute;top:0;bottom:0;left:50%;transform:translate(-50%)}.leaf-marks{width:var(--page-w);pointer-events:none;z-index:2;height:100%;font-family:var(--font-sans);letter-spacing:.13em;text-transform:uppercase;color:var(--folio);flex-direction:column;justify-content:space-between;font-size:10px;display:flex;position:absolute;top:0}.leaf-marks.left{padding:calc(var(--head-h) * .38) var(--pad-spine) calc(var(--foot-h) * .4) var(--pad-outer);align-items:flex-start;left:0}.leaf-marks.right{left:var(--page-w);padding:calc(var(--head-h) * .38) var(--pad-outer) calc(var(--foot-h) * .4) var(--pad-spine);align-items:flex-end}.leaf-head{white-space:nowrap;text-overflow:ellipsis;max-width:100%;overflow:hidden}.leaf-folio{font-variant-numeric:tabular-nums;letter-spacing:.1em}.flow-clip{inset:var(--head-h,48px) 0 var(--foot-h,52px);z-index:1;position:absolute;overflow:hidden}.book-flow{top:0;left:var(--pad-outer,56px);width:var(--content-w);height:var(--col-h);column-width:var(--content-w);column-gap:var(--col-gap);column-fill:auto;color:var(--ink);font-family:var(--font-serif);font-size:var(--book-fs,18px);text-align:justify;-webkit-hyphens:auto;hyphens:auto;line-height:1.6;position:absolute}.blank-leaf{height:var(--col-h);break-after:column}.cover-page{height:var(--col-h);break-after:column;break-inside:avoid;text-align:left;flex-direction:column;justify-content:flex-end;padding-bottom:4%;display:flex}.cover-kicker{font-family:var(--font-sans);color:var(--muted);letter-spacing:.2em;text-transform:uppercase;border-bottom:1px solid var(--rule);margin:0 0 18px;padding-bottom:14px;font-size:10px}.cover-title{font-family:var(--font-serif);letter-spacing:-.01em;text-align:left;-webkit-hyphens:none;hyphens:none;margin:0 0 16px;font-size:clamp(1.7rem,2.6vw,2.5rem);font-weight:500;line-height:1.1}.cover-byline,.cover-excerpt,.cover-source{text-align:left;color:var(--muted);margin:0;font-size:.92rem;line-height:1.5}.cover-byline{font-style:italic}.cover-excerpt{margin-top:12px}.cover-source{font-family:var(--font-sans);letter-spacing:.06em;margin-top:18px;font-size:.74rem}.cover-source a{color:var(--accent-ink);border-bottom:1px solid var(--accent-rule);text-decoration:none}.book-h{font-family:var(--font-serif);text-align:left;letter-spacing:-.005em;break-after:avoid;break-inside:avoid;-webkit-hyphens:none;hyphens:none;margin:1.5em 0 .5em;font-weight:600;line-height:1.24}.book-h1,.book-h2{font-size:1.3em}.book-h3,.book-h4{font-size:1.1em}.book-p{orphans:2;widows:2;margin:0 0 .85em}.book-p a,.book-list a,.book-quote a{color:var(--accent-ink);border-bottom:1px solid var(--accent-rule);text-decoration:none}.book-list{margin:.2em 0 1em;padding-left:1.25em}.book-list li{orphans:2;widows:2;margin:0 0 .42em}.book-list li::marker{color:var(--folio)}.book-list li:last-child{margin-bottom:0}.book-list :is(ul,ol){margin:.42em 0 .2em;padding-left:1.2em}.book-list :is(ul,ol) li{margin-bottom:.28em}.book-list li>p{margin:0 0 .42em}.book-code{break-inside:avoid;background:var(--paper-inset);white-space:pre-wrap;text-align:left;-webkit-hyphens:none;hyphens:none;margin:0 0 1em;padding:12px 14px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.76em;line-height:1.5;overflow:hidden}.book-quote{break-inside:avoid;border-left:1px solid var(--rule-strong);color:var(--ink-soft);margin:.2em 0 1em;padding-left:16px;font-style:italic}.book-table{break-inside:avoid;font-family:var(--font-sans);text-align:left;margin-bottom:1.1em;font-size:.76em;overflow:hidden}.book-table table{border-collapse:collapse;width:100%}.book-table td,.book-table th{border-bottom:1px solid var(--rule);text-align:left;padding:7px 8px}.book-table th{border-bottom-color:var(--rule-strong);font-weight:600}.book-figure{break-inside:avoid;margin:1.1em 0 1.25em}.book-figure-frame{box-shadow:inset 0 0 0 1px var(--rule);padding:10px}.book-figure-frame img,.book-figure-frame video{width:100%;max-height:calc(var(--col-h) - 130px);object-fit:contain;display:block}[data-theme=dark] .book-figure-frame[data-tone=light] img{filter:invert(.87)hue-rotate(180deg)sepia(.1)}.diagram-frame{position:relative}.diagram-sizer{visibility:hidden}.diagram-live{object-fit:contain;width:calc(100% - 20px);height:calc(100% - 20px);max-height:none;position:absolute;inset:10px}.book-embed{width:100%;padding:56.25% 0 0;position:relative}.book-embed iframe{border:0;width:100%;height:100%;position:absolute;inset:0}.book-figure figcaption{font-family:var(--font-sans);color:var(--muted);text-align:left;-webkit-hyphens:none;hyphens:none;margin-top:9px;font-size:.72em;line-height:1.45}.diagram-controls{font-family:var(--font-sans);letter-spacing:.13em;text-transform:uppercase;color:var(--folio);align-items:center;gap:14px;margin-top:9px;font-size:9.5px;display:flex}.diagram-controls button{color:var(--folio);cursor:pointer;font:inherit;letter-spacing:inherit;text-transform:inherit;background:0 0;border:0;padding:0;transition:color .18s}.diagram-controls button:hover{color:var(--accent-ink)}.diagram-count{font-variant-numeric:tabular-nums;margin-left:auto}.page-hit{width:var(--pad-outer,56px);z-index:3;cursor:pointer;background:0 0;border:0;height:100%;position:absolute;top:0}.page-hit.left{left:0}.page-hit.right{right:0}.reader-progress{z-index:9;color:var(--chrome-muted);font-family:var(--font-sans);letter-spacing:.12em;font-variant-numeric:tabular-nums;opacity:0;pointer-events:none;justify-content:center;align-items:center;gap:14px;padding:0 20px 16px;font-size:.7rem;transition:opacity .3s;display:flex;position:absolute;inset:auto 0 0}.reader-shell.chrome-on .reader-progress{opacity:1}.progress-track{background:var(--chrome-rule-soft);width:min(180px,26vw);height:1px;overflow:hidden}.progress-thumb{background:var(--accent);height:100%}.reader-toc{width:var(--toc-w,268px);overscroll-behavior:contain;z-index:8;scrollbar-width:thin;scrollbar-color:var(--chrome-scrollbar) transparent;padding:66px 22px 52px clamp(20px,3vw,38px);position:absolute;inset:0 auto 0 0;overflow-y:auto}.reader-toc-label{letter-spacing:.22em;text-transform:uppercase;color:var(--chrome-faint);margin:0 0 14px;font-size:.64rem}.reader-toc ol{margin:0;padding:0;list-style:none}.reader-toc button{--indent:14px;text-align:left;width:100%;padding:7px 0 7px var(--indent);color:var(--chrome-muted);font-family:var(--font-serif);cursor:pointer;background:0 0;border:0;font-size:.95rem;line-height:1.35;transition:color .18s;display:block;position:relative}.reader-toc button.level-2{--indent:28px}.reader-toc button.level-3{--indent:40px;font-size:.88rem}.reader-toc button:hover{color:var(--chrome-ink)}.reader-toc button.is-current{color:var(--chrome-bright)}.reader-toc button.is-current:before{content:"";background:var(--accent);width:8px;height:1.5px;position:absolute;top:.95em;left:0}@media (max-width:899px){.landing-hero{grid-template-columns:minmax(0,1fr);gap:40px}.landing-preview{width:min(100%,520px);margin:0}}@media (max-width:999px){.reader-stage-wrap{padding:var(--stage-top,12px) var(--stage-x,12px) var(--stage-bottom,12px)}.book-flow{text-align:left;-webkit-hyphens:none;hyphens:none}.page-hit{width:22%}.reader-chrome{gap:10px;padding:10px 14px 14px}.reader-title small{display:none}.reader-toc{background:var(--overlay);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);width:100%;padding:64px clamp(20px,6vw,40px) 40px;inset:0}.reader-toc button{padding-top:10px;padding-bottom:10px;font-size:1rem}}@media (max-width:639px){.landing{padding:22px 20px}.landing-preview{display:none}.landing-foot{font-size:.76rem}.reader-title span{font-size:.74rem}}@media (max-width:479px){.reader-title{display:none}.reader-chrome{grid-template-columns:1fr auto}}@media (prefers-reduced-motion:reduce){.spread-layer{animation-duration:1ms}.landing-go:hover:not(:disabled){transform:none}.landing-status.is-busy:after,.reader-spinner{animation:none}}@property --tw-rotate-x{syntax:"*";inherits:false}@property --tw-rotate-y{syntax:"*";inherits:false}@property --tw-rotate-z{syntax:"*";inherits:false}@property --tw-skew-x{syntax:"*";inherits:false}@property --tw-skew-y{syntax:"*";inherits:false}@property --tw-border-style{syntax:"*";inherits:false;initial-value:solid}