@charset "UTF-8";
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*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);line-height:1.65}body[data-theme=white]{--paper:#fff;--card:#f8f9f5;--soft:#f1f2ec}body[data-theme=dark]{--paper:#20241f;--ink:#ecebe1;--muted:#b2b8a9;--rule:#454c40;--accent:#ffa58a;--card:#292e27;--soft:#31382e}a{color:inherit;text-decoration:none}button,input,textarea,select{font:inherit;color:inherit}button,a,input,textarea,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer;background:none;border:1px solid var(--rule);padding:9px 16px;border-radius:3px}button:hover,a.text-link:hover{color:var(--accent);border-color:var(--accent)}button:disabled{cursor:default;opacity:.35}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible,summary:focus-visible{outline:2px solid var(--accent);outline-offset:5px}img{max-width:100%;display:block}p{margin:0 0 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var(--mono);color:var(--muted)}.hero-stamp{position:absolute;left:-25px;top:30px;border:1px solid var(--accent);border-radius:50%;width:83px;height:83px;display:grid;place-content:center;color:var(--accent);background:var(--paper);font:12px/1.4 var(--mono);text-align:center;transform:rotate(-9deg)}.intro-band{display:flex;justify-content:space-between;gap:40px;padding:23px 0;border-top:1px solid var(--rule);border-bottom:1px solid var(--rule);align-items:center;font-size:13px}.intro-band .key{display:flex;gap:25px;align-items:center}.intro-band .key span:first-child{font:22px var(--mono)}.section{padding:80px 0}.section-heading{display:flex;gap:30px;align-items:baseline;justify-content:space-between;margin-bottom:35px}.section-heading h2{font-size:34px;margin:0}.section-heading p{margin:0;font-size:13px;color:var(--muted)}.route-list{border-top:1px solid var(--rule)}.route-row{display:grid;grid-template-columns:75px 1.5fr 1fr 35px;gap:20px;align-items:center;padding:27px 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var(--mono);margin-right:8px}.reader-article{min-width:0}.reading-top{font:11px var(--mono);display:flex;justify-content:space-between;color:var(--muted);border-bottom:1px solid var(--rule);padding-bottom:14px}.reader-article h1{font-size:43px;line-height:1.5;margin:29px 0 18px}.reader-lede{font:24px/1.8 var(--serif);color:var(--muted);margin:0 0 30px}.edition-tag{display:inline-block;font:11px var(--sans);border:1px solid var(--rule);padding:4px 9px;border-radius:20px}.article-image{margin:30px 0 45px;cursor:zoom-in}.article-image img{max-height:510px;object-fit:contain;margin:auto;mix-blend-mode:multiply}body[data-theme=dark] .article-image img{mix-blend-mode:normal}.article-image figcaption{font:11px var(--sans);color:var(--muted);border-top:1px solid var(--rule);padding-top:10px;margin-top:12px;display:flex;justify-content:space-between}.essay-section{padding:25px 0 15px;scroll-margin-top:110px}.essay-section h2{font-size:27px}.prose{font:var(--body-size)/2 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var(--sans);color:var(--muted);margin:12px 0}.quiz{border-top:1px solid var(--rule);padding:35px 0;margin:30px 0}.quiz h2{font-size:25px;margin:14px 0}.quiz-options{display:grid;gap:10px}.quiz-options button{text-align:left;font-size:14px;padding:14px 17px}.quiz-options button.correct{border-color:#658767;background:#65876720}.quiz-options button.wrong{border-color:var(--accent);background:#c5402510}.quiz-feedback{font-size:14px;padding:18px 0;line-height:1.9}.chapter-bottom{border-top:1px solid var(--rule);padding:30px 0;display:flex;justify-content:space-between;gap:20px;font-size:14px}.full-source{border-top:1px solid var(--rule);margin-top:30px;padding-top:18px;font-size:13px}.full-source summary{cursor:pointer;color:var(--muted)}.full-source .prose{font:15px/1.9 var(--sans);padding-top:20px}.page-toolbar{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin:20px 0 25px}.page-toolbar input{width:85px;background:var(--paper);border:1px solid 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p{margin:0}.studio-section{padding:50px 0;border-top:1px solid var(--rule)}.studio-section h2{font-size:32px}.studio-section>.muted{max-width:700px;font-size:14px}.timeline-tabs{display:flex;justify-content:space-between;gap:8px;margin:35px 0}.timeline-tabs button{font:16px var(--mono);border:0;border-bottom:2px solid var(--rule);flex:1;border-radius:0}.timeline-tabs button.selected{color:var(--accent);border-color:var(--accent)}.timeline-card{display:grid;grid-template-columns:1fr 1fr;gap:50px;background:var(--soft);padding:35px;align-items:center}.timeline-card img{height:270px;width:100%;object-fit:contain}.timeline-year{font:70px var(--mono);color:var(--accent);line-height:1.2}.timeline-card h3{font:26px var(--serif);margin:18px 0}.timeline-card p{font-size:15px}.mechanism{background:var(--soft);padding:35px;display:grid;grid-template-columns:1fr 1fr;gap:45px;align-items:center}.machine-svg{width:100%;height:auto}.machine-lines{transition:stroke .3s,opacity .3s}.machine-svg[data-layer=vent] .machine-lines{stroke:var(--accent);stroke-width:4}.machine-svg[data-layer=visual] .machine-lines{stroke:var(--accent);stroke-width:2}.machine-svg[data-layer=structure] .machine-body{stroke:var(--accent);stroke-width:4}.mechanism .subnav{margin-bottom:24px}.mechanism h3{font:25px var(--serif)}.mechanism p{font-size:15px}.glossary{display:grid;grid-template-columns:1fr 1fr;gap:0 45px}.glossary details{border-top:1px solid var(--rule);padding:20px 0}.glossary summary{cursor:pointer;list-style:none;display:flex;justify-content:space-between;font:21px var(--serif)}.glossary summary:after{content:'+';font:20px var(--mono)}.glossary details[open] summary:after{content:'−'}.glossary p{font-size:14px;margin-top:15px}.glossary .eyebrow{margin-top:14px}.book-grid{display:grid;grid-template-columns:repeat(8,1fr);gap:16px}.book-tile{display:block;position:relative}.book-tile img{aspect-ratio:.84;object-fit:cover;object-position:top;border:1px solid var(--rule);transition:transform .2s}.book-tile:hover img{transform:translateY(-4px)}.book-tile span{font:11px var(--mono);display:block;margin-top:8px;color:var(--muted)}.note-card{padding:25px;border:1px solid var(--rule);background:var(--card);margin:20px 0}.note-card h2{font:22px var(--serif);margin:8px 0 15px}.note-card p{white-space:pre-wrap;font:17px/1.9 var(--serif)}.note-card footer{display:flex;gap:10px;justify-content:space-between;align-items:center}.note-card button{font-size:11px}.empty-state{border:1px dashed var(--rule);padding:40px;text-align:center}.brief-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.brief-grid label{font-size:13px}.brief-grid textarea{display:block;width:100%;min-height:100px;resize:vertical;background:var(--card);border:1px solid var(--rule);padding:13px;margin-top:8px}.bookmarks{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px}.about-content{max-width:800px;padding-bottom:40px}.about-content h2{font-size:26px;margin-top:40px}.about-content p,.about-content li{font-size:15px;line-height:1.95}.about-content table{border-collapse:collapse;width:100%;font-size:13px}.about-content td,.about-content th{border-bottom:1px solid var(--rule);padding:13px;text-align:left}.about-content th{font-weight:500}.scan-panel{margin:20px 0}.scan-panel summary{cursor:pointer;font-size:13px;padding:10px 0}.scan-panel img{margin-top:15px}.notice{font-size:12px;color:var(--muted);border:1px solid var(--rule);padding:16px;line-height:1.9;background:var(--card)}.reading-saved{color:var(--accent);font-size:13px}.resume{border:1px solid var(--rule);padding:20px 25px;margin-top:26px;display:flex;justify-content:space-between;gap:20px;font-size:13px}.resume strong{font-weight:500}.fullchapter-head{padding-top:35px}.fullchapter-head h2{font:22px var(--serif);margin-bottom:18px}.fullpage{border-top:1px solid var(--rule);padding:35px 0 20px}.fullpage h2{font:20px var(--mono);color:var(--accent);margin-bottom:14px}.fullpage .prose{font-size:var(--body-size)}.gallery-controls{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:25px}.gallery-controls select{background:var(--paper);border:1px solid var(--rule);padding:8px;font-size:13px}.gallery-controls label{font-size:12px}dialog{background:var(--paper);color:var(--ink);border:1px solid var(--rule);border-radius:6px;width:min(680px,92vw);max-height:85vh;padding:30px;box-shadow:0 20px 90px #0003}dialog::backdrop{background:#1118;backdrop-filter:blur(4px)}.dialog-head{display:flex;justify-content:space-between;gap:20px;align-items:center;margin-bottom:20px}.dialog-head h2{font-size:26px;margin:0}.dialog-head label{font:24px var(--serif)}#search-input{width:100%;background:transparent;border:0;border-bottom:1px solid var(--ink);font-size:21px;padding:12px 0;margin-bottom:10px}#search-results{max-height:48vh;overflow:auto}.search-item{display:block;border-top:1px solid var(--rule);padding:18px 0}.search-item strong{font-size:14px;font-weight:500}.search-item p{font-size:12px;color:var(--muted);margin:7px 0 0}.search-item mark{color:var(--accent);background:#c5402510}.search-item .eyebrow{font-size:10px}#settings-dialog{max-width:440px}#settings-dialog input{width:100%;margin:20px 0 30px;accent-color:var(--accent)}#settings-dialog fieldset{border:0;padding:0;margin:0 0 25px}#settings-dialog legend{font-size:13px;margin-bottom:15px}#settings-dialog label{font-size:14px}#image-dialog{width:94vw;max-width:1500px;max-height:95vh;padding:20px}#image-dialog .dialog-head{margin-bottom:5px}.image-controls{display:flex;gap:15px;align-items:center;font-size:12px;padding:10px 0}.image-controls button{padding:5px 10px;font-size:12px}.image-scroll{max-height:74vh;overflow:auto;background:#d7d6cb;padding:20px}.image-scroll img{max-width:none;width:100%;height:auto;margin:auto}#toast{position:fixed;bottom:28px;left:50%;transform:translate(-50%,20px);padding:12px 25px;background:var(--ink);color:var(--paper);font-size:13px;border-radius:4px;opacity:0;pointer-events:none;z-index:100;transition:opacity .2s,transform .2s;max-width:90vw}#toast.show{opacity:1;transform:translate(-50%,0)}.home-quote{max-width:800px;font:30px/1.9 var(--serif);margin:0 auto;text-align:center;padding:65px 0}.home-quote footer{font:12px var(--sans);color:var(--muted);margin-top:20px}.inline-form{display:flex;align-items:center;gap:15px;flex-wrap:wrap}.inline-form input{padding:9px;background:var(--paper);border:1px solid var(--rule);width:100px}.inline-form label{font-size:13px}.top-return{font-size:12px;color:var(--muted);display:inline-block;margin-bottom:15px}.mode-tabs{display:flex;border-bottom:1px solid var(--rule);gap:24px;margin:20px 0 30px}.mode-tabs a{font-size:13px;padding-bottom:10px}.mode-tabs a.selected{border-bottom:2px solid var(--accent);color:var(--accent)}.portable-label{font-size:10px;color:var(--muted)}
@media(min-width:1500px){.reader-layout{max-width:1440px;grid-template-columns:210px minmax(0,760px) 200px;gap:60px}}
@media(max-width:1100px){.reader-layout{grid-template-columns:160px minmax(0,1fr);gap:35px}.reader-margin{display:none}.hero{gap:4%}.hero-image{height:420px}.hero h1{font-size:58px}.topbar nav{gap:24px}.book-grid{grid-template-columns:repeat(6,1fr)}}
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@media(max-width:760px){.topbar{height:83px;display:grid;grid-template-columns:1fr auto;grid-template-rows:48px 34px;column-gap:10px;row-gap:0;padding:0 6%}.wordmark{grid-column:1;grid-row:1}.top-actions{grid-column:2;grid-row:1}.topbar nav{grid-column:1/-1;grid-row:2;gap:28px;align-items:center;justify-content:flex-start}.topbar nav a{white-space:nowrap;font-size:12px;padding:3px 0}.topbar nav a:last-child{display:block}#progress-line{top:82px}}
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