.reader-header{position:relative;display:flex;justify-content:space-between;gap:2rem;align-items:center;width:min(100%,100rem);margin-inline:auto;padding:1.5rem clamp(1.5rem,4vw,4rem);border-bottom:1px solid var(--rule)}.wordmark{font-size:1rem;font-weight:650;letter-spacing:-.035em;text-decoration:none}.wordmark span{color:var(--muted)}.header-actions{display:flex;gap:1.4rem}.header-actions a,.find-hint,.nav-label,.book-identity>p:first-child,.book-opening,.reader-footer{font-size:.7rem;font-weight:650;letter-spacing:.085em;text-transform:uppercase}.header-actions a{text-underline-offset:.25rem}.find-hint{color:var(--muted)}.find-hint kbd{font:inherit;letter-spacing:inherit}.reader-layout{display:grid;grid-template-columns:minmax(16rem,21rem) minmax(0,1fr);gap:clamp(4rem,10vw,11rem);width:min(100%,100rem);margin-inline:auto;padding:clamp(2.5rem,6vw,6rem) clamp(1.5rem,4vw,4rem) 6rem}.reader-rail{align-self:stretch}.book-identity{position:sticky;top:2rem}.book-identity>p:first-child,.nav-label{margin:0;color:var(--muted)}.book-identity h1{margin:1.3rem 0 0;font-size:clamp(3rem,5vw,5rem);font-weight:500;line-height:.88;letter-spacing:-.065em}.project-wordmark-link{color:inherit;text-decoration:none}.project-wordmark-link span{position:relative;display:inline-block}.project-wordmark-link span:not(:last-child){margin-right:.18em}.project-wordmark-link span:after{position:absolute;top:52%;right:-.02em;left:-.02em;height:.045em;background:currentColor;content:"";transform:scaleX(0);transform-origin:right;transition:transform .18s cubic-bezier(.16,1,.3,1)}.project-wordmark-link:hover span:after,.project-wordmark-link:focus-visible span:after{transform:scaleX(1);transform-origin:left}.project-wordmark-link:focus-visible{outline:2px solid currentColor;outline-offset:.08em}.book-identity .subtitle{max-width:20rem;margin:1.2rem 0 0;font-size:1rem;line-height:1.45;letter-spacing:-.018em}.book-identity .author{margin:1.5rem 0 0;color:var(--muted);font-size:.83rem}.rail-mark{position:absolute;top:100%;left:-1.5rem;display:block;width:calc(100% + 3rem);max-width:none;height:auto;margin-top:1.25rem;opacity:.8;-webkit-mask-image:radial-gradient(ellipse 82% 76% at 55% 58%,black 50%,transparent 100%);mask-image:radial-gradient(ellipse 82% 76% at 55% 58%,black 50%,transparent 100%)}.reader-rail nav{position:sticky;top:37rem;margin-top:15.5rem;padding-top:1rem;border-top:1px solid var(--rule)}.reader-rail ol{display:grid;gap:.5rem;margin:1rem 0 0;padding:0;list-style:none}.reader-rail li{margin:0}.reader-rail nav a{display:block;color:var(--muted);font-size:.76rem;line-height:1.35;text-decoration:none}.reader-rail nav a:hover,.reader-rail nav a[aria-current=location]{color:var(--ink)}.reader-rail nav a[aria-current=location]:before{content:"— "}.reader-main{min-width:0}.book-opening{display:flex;justify-content:space-between;gap:1.5rem;max-width:48rem;padding:0 0 1rem;border-bottom:1px solid var(--ink);color:var(--muted)}.book-content{max-width:48rem}.book-content>p:first-child{max-width:37rem;margin:clamp(5rem,10vw,9rem) 0 clamp(8rem,15vw,13rem);font-size:clamp(1.8rem,4vw,3.3rem);line-height:1.12;letter-spacing:-.045em}.book-content hr{height:0;margin:7rem 0;border:0;border-top:1px solid var(--rule)}.book-content h1{margin:10rem 0 3rem;padding-top:1.3rem;border-top:1px solid var(--ink);font-size:clamp(2.8rem,6vw,5.8rem);font-weight:500;line-height:.92;letter-spacing:-.064em;scroll-margin-top:2rem}.book-content h2{margin:5.5rem 0 1.4rem;font-size:clamp(1.65rem,3vw,2.35rem);font-weight:500;line-height:1.08;letter-spacing:-.04em;scroll-margin-top:2rem}.book-content h3,.book-content h4{margin:3rem 0 1rem;font-size:.72rem;font-weight:700;letter-spacing:.09em;text-transform:uppercase}.book-content p,.book-content li{font-size:clamp(1.02rem,1.35vw,1.14rem);line-height:1.72;letter-spacing:-.011em}.book-content p{margin:0 0 1.35rem}.book-content ul,.book-content ol{margin:1.5rem 0 2rem;padding-left:1.4rem}.book-content li+li{margin-top:.65rem}.book-content blockquote{margin:2.5rem 0;padding:.2rem 0 .2rem 1.5rem;border-left:1px solid var(--ink)}.book-content blockquote p{margin:0;color:var(--muted);font-size:clamp(1.25rem,2.2vw,1.7rem);line-height:1.42;letter-spacing:-.025em}.book-content a{text-decoration-thickness:1px;text-underline-offset:.18em}.book-content code{font-family:SFMono-Regular,Consolas,Liberation Mono,monospace;font-size:.84em}.book-content p>code:only-child{display:block;margin:2rem 0;padding:1rem 1.1rem;border-block:1px solid var(--rule);overflow-x:auto}.book-content table{display:block;width:100%;margin:2.5rem 0 3rem;border-collapse:collapse;overflow-x:auto;font-size:.82rem;line-height:1.45}.book-content th,.book-content td{min-width:9rem;padding:.75rem 1rem .75rem 0;border-bottom:1px solid var(--rule);text-align:left;vertical-align:top}.book-content th{font-size:.67rem;letter-spacing:.07em;text-transform:uppercase}.reader-footer{display:flex;justify-content:space-between;gap:1.5rem;max-width:48rem;margin-top:8rem;padding-top:1.2rem;border-top:1px solid var(--ink)}.reader-footer a{text-underline-offset:.25rem}@media(max-width:900px){.reader-layout{grid-template-columns:1fr;gap:5rem}.book-identity,.reader-rail nav{position:static}.reader-rail nav{margin-top:4rem}.rail-mark{position:static;width:calc(100% + 2rem);max-width:none;margin-left:-1rem;margin-top:2.5rem}.reader-rail ol{grid-template-columns:repeat(2,minmax(0,1fr));gap:.7rem 1.5rem}}@media(max-width:560px){.reader-header{padding-inline:1.25rem}.reader-layout{padding:2.5rem 1.25rem 4rem}.find-hint{display:none}.reader-rail ol{grid-template-columns:1fr}.book-opening,.reader-footer{flex-direction:column}.book-content>p:first-child{margin-block:4rem 7rem}.book-content h1{margin-top:7rem}}@media(prefers-reduced-motion:reduce){.project-wordmark-link span:after{transition:none}}@media print{.reader-header,.reader-rail,.reader-footer,.book-opening{display:none}.reader-layout{display:block;padding:0}.book-content{max-width:none}.book-content h1{break-before:page}}