@theme inline{ --color-ploy-book-background: #111715; --color-ploy-book-surface: #19211e; --color-ploy-book-cover: #e9ebd8; --color-ploy-book-ink: #171f1b; --color-ploy-book-text: #f0f1e8; --color-ploy-book-muted: #a9b6ae; --color-ploy-book-accent: #91d2b8; --color-ploy-book-border: #34423a; }:root{--color-ploy-book-background: #111715;--color-ploy-book-surface: #19211e;--color-ploy-book-cover: #e9ebd8;--color-ploy-book-ink: #171f1b;--color-ploy-book-text: #f0f1e8;--color-ploy-book-muted: #a9b6ae;--color-ploy-book-accent: #91d2b8;--color-ploy-book-border: #34423a}.book-dark{background:var(--color-ploy-book-background);color:var(--color-ploy-book-text);min-height:80vh;font-size:17px;--richtext-accent: var(--color-ploy-book-accent);--richtext-surface: var(--color-ploy-book-surface);--richtext-muted: var(--color-ploy-book-muted);--richtext-callout-accent: var(--color-ploy-book-accent);--richtext-scroll-offset: 130px}.book-dark a:focus-visible,.book-dark button:focus-visible,.book-dark summary:focus-visible{outline:2px solid var(--color-ploy-book-accent);outline-offset:5px}.book-home .anatomy-hub__episodes{border-color:var(--color-ploy-book-border)}.book-home .anatomy-hub__episodes-container{max-width:1280px;padding:72px 48px}.book-hero{border-bottom:1px solid var(--color-ploy-book-border)}.book-hero-inner{max-width:1280px;margin:auto;display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);align-items:center;gap:60px;padding:80px 48px 56px;min-height:650px}.book-eyebrow{font-family:var(--font-mono);font-size:13px;letter-spacing:.14em;color:var(--color-ploy-book-accent)}.book-hero h1{font-size:clamp(44px,5.5vw,78px);font-weight:500;letter-spacing:-.055em;line-height:1.02;margin:24px 0 0;max-width:610px}.book-hero-subtitle{font-size:23px;line-height:1.45;color:var(--color-ploy-book-muted);max-width:490px;margin-top:26px}.book-hero-author{margin-top:32px;font-size:17px;line-height:1.7}.book-hero-author span{color:var(--color-ploy-book-muted);font-size:15px}.book-hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}.book-dark .cc-button{background:var(--color-ploy-book-text);color:var(--color-ploy-book-ink);border:1px solid var(--color-ploy-book-text);font-size:13px;min-height:44px}.book-dark .cc-button[href="/engineering-intelligence"]{background:transparent;color:var(--color-ploy-book-text);border-color:var(--color-ploy-book-border)}.book-dark .cc-button:hover{background:var(--color-ploy-book-accent);color:var(--color-ploy-book-ink)}.book-preview-link{display:inline-block;font-family:var(--font-mono);font-size:13px;text-decoration:underline;color:var(--color-ploy-book-muted);margin-top:24px}.book-object-scene{position:relative;isolation:isolate;width:100%;max-width:480px;min-height:520px;display:flex;align-items:center;justify-content:center;margin:0;padding:20px;perspective:1200px}.book-object-scene:before{content:"";position:absolute;inset:8% -5% 4%;z-index:-1;background:radial-gradient(ellipse at 50% 50%,color-mix(in srgb,var(--color-ploy-book-accent) 20%,transparent),transparent 65%);filter:blur(14px)}.book-object{position:relative;width:355px;height:485px;transform:rotateY(-14deg) rotate(2deg);transform-style:preserve-3d;box-shadow:16px 30px 40px #0005}.book-cover-front{position:absolute;inset:0;background:var(--color-ploy-book-cover);color:var(--color-ploy-book-ink);border-left:1px solid #53674f44;display:flex;flex-direction:column;box-shadow:inset 7px 0 9px #35463122}.book-cover-top{padding:30px 24px 26px;flex:1}.book-cover-title{font-size:38px;line-height:.99;font-weight:800;letter-spacing:-.05em}.book-cover-subtitle{margin-top:24px;font-size:20px;line-height:1.3;font-weight:500;letter-spacing:-.035em}.book-cover-author{margin-top:34px;font-size:17px;line-height:1.5}.book-cover-author small{font-size:13px;line-height:1.4;display:block}.book-cover-bottom{height:112px;background:var(--color-ploy-book-ink);color:var(--color-ploy-book-cover);padding:20px 24px;font-family:var(--font-mono);font-size:11px;letter-spacing:.08em}.book-cover-bottom p{margin-top:17px;opacity:.6;font-size:10px}.book-cover-rule{height:1px;background:var(--color-ploy-book-accent);width:45%;margin-bottom:16px}.book-spine{position:absolute;left:-28px;top:0;width:28px;height:100%;background:linear-gradient(90deg,#a6b497,var(--color-ploy-book-cover));color:var(--color-ploy-book-ink);box-shadow:inset -5px 0 6px #2c442f22}.book-spine span{writing-mode:vertical-rl;font-size:14px;font-weight:700;letter-spacing:.04em;position:absolute;top:36px;left:7px}.book-spine small{writing-mode:vertical-rl;position:absolute;bottom:20px;left:8px;font-size:9px}.book-pages-edge{position:absolute;right:-6px;top:4px;bottom:5px;width:6px;background:linear-gradient(90deg,#969d89,#e2e4d3);transform:translateZ(-4px)}.book-intro-quote{max-width:1184px;margin:0 auto;padding:28px 0 48px;display:flex;align-items:center;gap:64px}.book-intro-quote blockquote{font-size:19px;line-height:1.6;color:var(--color-ploy-book-muted);max-width:810px}.book-intro-quote a{font-family:var(--font-mono);font-size:13px;color:var(--color-ploy-book-accent);white-space:nowrap}.book-contents-intro{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:34px}.book-contents-intro h2{font-size:38px;letter-spacing:-.04em;font-weight:500}.book-contents-intro p{color:var(--color-ploy-book-muted);font-size:15px}.book-part{border-top:1px solid var(--color-ploy-book-border);padding:24px 0}.book-part:last-child{border-bottom:1px solid var(--color-ploy-book-border)}.book-part summary{font-size:24px;font-weight:500;cursor:pointer;line-height:1.4}.book-part summary span{float:right;font-family:var(--font-mono);font-size:13px;font-weight:400;color:var(--color-ploy-book-muted);padding-top:7px}.book-part ol{list-style:none;margin:20px 0 0;padding:0;display:grid;grid-template-columns:1fr 1fr;column-gap:48px}.book-part li{min-width:0}.book-part a{display:flex;justify-content:space-between;gap:24px;font-size:17px;line-height:1.6;padding:12px 0;border-bottom:1px solid var(--color-ploy-book-border)}.book-part a:hover{color:var(--color-ploy-book-accent)}.book-part small{font-family:var(--font-mono);font-size:13px;color:var(--color-ploy-book-muted);white-space:nowrap}.book-edition-footer{max-width:1184px;margin:auto;padding:40px 0;display:flex;justify-content:space-between;border-top:1px solid 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