@charset "UTF-8";
:root{--max:1200px}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:calc(var(--header-height) + 16px)}body{margin:0;background:var(--paper);color:var(--ink);font:17px/1.65 'Segoe UI',Arial,sans-serif}a{color:inherit;text-underline-offset:5px;text-decoration-thickness:1px}a:hover{color:var(--rust)}p{margin:0 0 20px}h1,h2,h3{font-family:Georgia,'Times New Roman',serif;font-weight:400;text-wrap:balance}h2{font-size:clamp(34px,4vw,54px);line-height:1.12;letter-spacing:-1.8px;margin:12px 0 30px}h3{font-size:25px;line-height:1.25;margin:0 0 14px}em{font-weight:400;color:var(--rust)}img{display:block;max-width:100%;height:auto}figure{margin:0}strong{font-weight:650}mark{background:#e9d9c6;color:#713620;padding:0 4px}::selection{background:#ddc4a8;color:#321d12}:focus-visible{outline:3px solid #78512b;outline-offset:5px}main:focus{outline:none}.skip-link{position:fixed;left:20px;top:-100px;z-index:150;background:var(--ink);color:white;padding:12px 20px}.skip-link:focus{top:15px}.site-header,.book-main,.footer-inner{max-width:var(--max);margin:auto;padding:0 36px}.book-nav{min-height:86px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{font-size:13px;font-weight:750;letter-spacing:2px;text-decoration:none;white-space:nowrap}.brand span{color:var(--muted);font-size:10px;letter-spacing:1px}.book-nav ul{display:flex;gap:28px;list-style:none;margin:0;padding:0;align-items:center}.book-nav li a{display:flex;align-items:center;min-height:44px;text-decoration:none;font-size:13px}.book-nav .nav-editions{border-bottom:1px solid var(--rust);color:var(--rust);gap:16px}.eyebrow{font:11px/1.5 Consolas,'Courier New',monospace;letter-spacing:1.65px;text-transform:uppercase;color:var(--rust);margin:0 0 18px}.book-hero{display:grid;grid-template-columns:minmax(0,1.22fr) minmax(0,.78fr);gap:0 72px;padding:64px 0 0;align-items:center}.book-hero h1{font-size:clamp(54px,5.5vw,78px);line-height:1.025;letter-spacing:-3px;margin:20px 0 22px}.book-hero h1 em{font-style:normal}.hero-author{font-size:15px;letter-spacing:.4px;margin-bottom:31px}.hero-question{font-size:21px;line-height:1.5;margin-bottom:16px}.hero-description{font-size:16px;color:var(--muted);max-width:490px}.book-actions{display:flex;align-items:center;flex-wrap:wrap;gap:18px 25px;margin:28px 0 0}.book-button{display:inline-flex;align-items:center;justify-content:center;gap:22px;min-height:48px;border:1px solid var(--ink);padding:13px 19px;font-size:13px;font-weight:600;text-decoration:none;line-height:1.4}.book-button-primary{background:var(--rust);color:var(--white);border-color:var(--rust)}.book-button-primary:hover{background:#58381f;color:white}.text-link{display:inline-block;padding:10px 0;font-size:14px;font-weight:600}.hero-cover{padding:22px 14px 0;justify-self:center;width:100%;max-width:375px}.book-cover-image{width:100%;box-shadow:0 20px 34px -19px #30221770,0 2px 5px #30221720}.hero-cover figcaption{font:italic 14px/1.5 Georgia,serif;color:var(--muted);text-align:center;margin-top:23px}.hero-strip{grid-column:1/-1;display:flex;justify-content:space-between;gap:20px;border-top:1px solid var(--line);padding:21px 0;margin-top:60px;font:10px/1.6 Consolas,monospace;letter-spacing:1.25px;text-transform:uppercase;color:var(--muted)}.hero-strip b{font-weight:400;color:var(--rust);padding:0 10px}.book-section{border-top:1px solid var(--line);padding:82px 0;scroll-margin-top:16px}.split-heading{display:grid;grid-template-columns:1fr 1fr;gap:72px;align-items:start}.split-heading>p,.split-heading>div+div{padding-top:7px}.split-heading p:last-child{margin-bottom:0}.section-intro{max-width:710px;color:var(--muted)}.evidence-example{display:grid;grid-template-columns:.85fr 1.15fr;margin:38px 0 26px;border:1px solid var(--line);background:var(--white)}.example-question{padding:38px;border-right:1px solid var(--line)}.example-question p{font:34px/1.25 Georgia,serif;margin-top:30px}.example-source{padding:38px}.example-source>p{font:25px/1.5 Georgia,serif;margin:25px 0}.example-verdict{border-top:1px solid var(--line);padding-top:20px;font-size:14px;color:var(--muted)}.small-note{font-size:12px;line-height:1.7;color:var(--muted)}.section-tail{display:grid;grid-template-columns:1.25fr 1fr;gap:72px;align-items:center}.section-tail p{max-width:650px;margin:0}.section-tail .text-link{justify-self:end}.levels{list-style:none;margin:38px 0 25px;padding:0;border-top:1px solid var(--line)}.levels li{display:grid;grid-template-columns:65px 1fr 190px;gap:22px;align-items:center;padding:28px 0;border-bottom:1px solid var(--line)}.levels h3{margin-bottom:8px}.levels p{font-size:15px;color:var(--muted);max-width:610px;margin:0}.level-number{font:30px Georgia,serif;color:var(--rust)}.level-tag{font:11px/1.6 Consolas,monospace;text-transform:uppercase;letter-spacing:1px;text-align:right}.margin-note{padding-left:22px;border-left:2px solid var(--rust);max-width:850px;font-size:15px;color:var(--muted)}.laboratory{background:var(--sage);margin:0 -36px;padding:65px 36px;border:0}.laboratory .split-heading{gap:72px}.experiment-strip{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid #c5b8a5;margin-top:38px}.experiment-strip article{padding:32px 35px 0 0}.experiment-strip article+article{border-left:1px solid #c5b8a5;padding:32px 0 0 35px}.experiment-strip p{font-size:15px;max-width:450px}.experiment-strip a{font-size:14px}.journey{list-style:none;display:grid;grid-template-columns:repeat(4,1fr);gap:28px;padding:0;margin:42px 0 28px}.journey li{position:relative;border-top:2px solid var(--ink);padding-top:18px}.journey li:not(:last-child):after{content:'\2192';position:absolute;top:-17px;right:-22px;color:var(--rust);background:var(--paper);font-size:20px}.journey span{font:12px Consolas,monospace;color:var(--rust)}.journey h3{margin:12px 0;font-size:25px}.journey p{font-size:14px;color:var(--muted);margin:0}.journey-caption{display:flex;justify-content:space-between;gap:24px;align-items:center;font-size:12px;color:var(--muted)}.boundary{border-left:3px solid var(--rust);background:#ece8dd;padding:30px 35px;margin-top:38px}.boundary p{font:25px/1.45 Georgia,serif}.boundary a{font-size:14px}.pull-line{font:24px/1.4 Georgia,serif;color:var(--rust);margin-top:28px}.reading-routes{display:grid;grid-template-columns:1fr 1fr;gap:36px;margin:28px 0 40px}.reading-routes>div{border-top:2px solid var(--rust);padding-top:20px}.reading-routes h3{font-size:25px}.reading-routes p{margin-bottom:6px;font-size:15px}.reading-routes a{font-size:13px}.chapter-index{border-top:1px solid var(--line)}.chapter-link{display:grid;grid-template-columns:110px 1fr 35px;align-items:start;gap:30px;border-bottom:1px solid var(--line);padding:25px 0;text-decoration:none}.chapter-number{font:12px/1.7 Consolas,monospace;color:var(--rust);padding-top:5px}.chapter-link h3{font-size:25px;margin:0 0 8px}.chapter-link p{font-size:14px;color:var(--muted);margin:0}.chapter-arrow{font-size:25px}.chapter-link:hover h3{text-decoration:underline;text-underline-offset:5px}.chapter-index+.small-note{margin-top:22px;max-width:800px}.learning-list{counter-reset:learning;list-style:none;padding:0;margin:0}.learning-list li{counter-increment:learning;border-top:1px solid var(--line);padding:18px 0 18px 35px;position:relative;font-size:15px}.learning-list li:before{content:counter(learning,decimal-leading-zero);font:11px Consolas,monospace;position:absolute;left:0;top:23px;color:var(--rust)}.audiences{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;margin-top:35px}.audiences article{border-top:1px solid var(--line);padding-top:20px}.audiences h3{font-size:23px}.audiences p{font-size:14px;color:var(--muted)}.other-race{background:#e9e3d6;margin:0 -36px;padding:65px 36px}.author-statement{font:28px/1.35 Georgia,serif}.book-format{background:var(--ink);color:var(--paper);padding:60px}.book-format>.eyebrow{color:#dcb58e}.book-format h2{max-width:700px}.book-format>p{max-width:630px;color:#eee6d8}.format-grid{display:grid;grid-template-columns:1fr 1fr;gap:35px;border-top:1px solid #a28c72;margin:32px 0;padding-top:28px}.format-grid h3{margin-bottom:10px}.format-grid p{font-size:14px;max-width:350px}.isbn{font-family:Consolas,monospace}.book-button-light{color:var(--paper);border-color:#d5c9b8}.book-button-light:hover{background:var(--paper);color:var(--ink)}.book-format :focus-visible{outline-color:#efbd93}.site-footer{border-top:1px solid var(--line)}.footer-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;padding-top:35px;padding-bottom:35px;font-size:13px}.footer-inner p{margin:0}.footer-inner span{font-size:11px;color:var(--muted)}.footer-inner a{padding:10px 0;white-space:nowrap}
/* Páginas editoriales y figuras */
.breadcrumb{display:flex;gap:9px;flex-wrap:wrap;font-size:12px;color:var(--muted);margin-bottom:36px}.chapter-hero{padding:44px 0 48px;border-bottom:1px solid var(--line)}.chapter-hero h1{font-size:clamp(38px,4.5vw,65px);line-height:1.1;letter-spacing:-2px;max-width:1000px;margin:16px 0 24px}.chapter-subtitle{font:24px/1.4 Georgia,serif;max-width:850px}.chapter-summary{font-size:20px;max-width:810px;color:var(--muted)}.chapter-hook{font:italic 26px/1.35 Georgia,serif;color:var(--rust);max-width:850px}.chapter-layout{display:grid;grid-template-columns:210px minmax(0,1fr);gap:65px;padding:48px 0}.chapter-toc{align-self:start;position:sticky;top:calc(var(--header-height) + 24px);font-size:13px}.chapter-toc ol{list-style:none;padding:0;margin:0}.chapter-toc a{display:block;min-height:44px;padding:10px 0;border-bottom:1px solid var(--line);text-decoration:none}.chapter-toc a[aria-current=page]{color:var(--rust);font-weight:650;border-left:2px solid var(--rust);padding-left:10px}.chapter-copy{min-width:0}.chapter-panel{margin:0 0 42px}.chapter-panel h2{font-size:30px;letter-spacing:-.5px;margin-top:0;margin-bottom:16px}.chapter-panel p{max-width:760px}.chapter-panel ul{padding-left:22px}.chapter-panel li{padding:6px 0}.chapter-idea{border-top:2px solid var(--rust);border-bottom:1px solid var(--line);padding:28px 0;margin:34px 0}.chapter-idea p{font:32px/1.3 Georgia,serif;margin-bottom:0}.chapter-question{background:var(--sage);padding:28px;margin-top:30px}.chapter-question p{font:25px/1.4 Georgia,serif;margin-bottom:0}.chapter-nav{display:flex;justify-content:space-between;gap:28px;padding:30px 0;border-top:1px solid var(--line)}.chapter-nav a{font-size:14px;max-width:46%;padding:8px 0}.chapter-buy{border-top:1px solid var(--line);padding:35px 0 55px;display:flex;align-items:center;justify-content:space-between;gap:30px}.chapter-buy p{font:25px Georgia,serif;margin:0}.chapter-buy .book-actions{margin:0}.visual-panel{margin:35px 0 45px;background:var(--white);border:1px solid var(--line);padding:28px}.visual-panel h2{font-size:29px;letter-spacing:-.6px}.visual-panel>p{font-size:14px;color:var(--muted)}.flow-list{list-style:none;padding:0;counter-reset:flow}.flow-list li{counter-increment:flow;padding:16px 0 16px 42px;border-top:1px solid var(--line);position:relative}.flow-list li:before{content:counter(flow,decimal-leading-zero);position:absolute;left:0;top:18px;font:12px Consolas,monospace;color:var(--rust)}.flow-list strong{display:block}.flow-list p{font-size:14px;margin:5px 0 0;color:var(--muted)}.dual-field{display:grid;grid-template-columns:1fr 1fr;gap:25px}.dual-field h3{font-size:23px}.dual-field p{font-size:14px}.routing{margin-top:25px}.routing details{border-top:1px solid var(--line);padding:0}.routing summary{cursor:pointer;padding:17px 0;font-size:15px;font-weight:600;min-height:48px}.routing details p{font-size:14px;margin:0 0 20px}.routing .state{display:inline-block;width:10px;height:10px;border-radius:50%;margin-right:10px;background:var(--rust)}.routing .green{background:#496342}.routing .yellow{background:#9b791a}.routing .orange{background:#a65b21}.table-wrap{overflow-x:auto}table{border-collapse:collapse;width:100%;font-size:14px}caption{text-align:left;font-weight:600;padding-bottom:15px}th,td{text-align:left;border-bottom:1px solid var(--line);padding:12px 10px;vertical-align:top}th:first-child,td:first-child{padding-left:0}.chapter-figures{border-top:1px solid var(--line);padding-top:35px}.figure-links{display:grid;gap:18px}.figure-preview{display:grid;grid-template-columns:120px 1fr;gap:24px;text-decoration:none;border-bottom:1px solid var(--line);padding:20px 0;align-items:center}.figure-preview img{width:120px;max-height:150px;object-fit:contain;background:white}.figure-preview h3{font-size:23px;margin:0 0 8px}.figure-preview span{font-size:12px;color:var(--muted)}.figure-page{padding:40px 0 60px}.figure-grid{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,.75fr);gap:50px;align-items:start}.figure-large{padding:20px;background:white;border:1px solid var(--line)}.figure-large img{width:100%}.figure-large figcaption{font-size:12px;margin-top:20px;color:var(--muted)}.figure-grid .chapter-panel h2{font-size:27px}.figure-grid .chapter-idea p{font-size:27px}.figure-zoom{margin:25px 0}.figure-page .small-note{max-width:750px}
@media(min-width:1600px){:root{--max:1300px}.book-hero{gap:0 100px}.book-hero h1{font-size:84px}.hero-cover{max-width:405px}}
@media(max-width:1000px){.book-hero{gap:0 35px}.book-hero h1{font-size:62px}.hero-cover{padding:10px 0}.split-heading,.section-tail{gap:35px}.laboratory .split-heading{gap:35px}.audiences{grid-template-columns:1fr 1fr}.chapter-layout{grid-template-columns:170px minmax(0,1fr);gap:35px}.book-nav ul{gap:18px}.levels li{grid-template-columns:45px 1fr 145px}.book-format{padding:42px}.figure-grid{gap:28px}}
@media(max-width:760px){.site-header,.book-main,.footer-inner{padding-left:24px;padding-right:24px}.book-nav{flex-wrap:wrap;gap:4px;justify-content:space-between;padding:16px 0 8px}.brand{display:block;padding:7px 0}.book-nav ul{width:100%;justify-content:space-between;gap:8px}.book-nav li a{font-size:12px}.book-hero{grid-template-columns:1fr;gap:38px;padding-top:40px}.book-hero h1{font-size:clamp(48px,9vw,70px);letter-spacing:-2px}.hero-copy{max-width:560px}.hero-question{font-size:20px}.hero-author{margin-bottom:24px}.hero-cover{width:68%;max-width:300px;padding:0}.hero-cover figcaption{font-size:13px}.hero-strip{margin-top:0;display:block;padding:20px 0}.hero-strip span{display:block}.hero-strip span+span{margin-top:10px;letter-spacing:.5px}.book-section{padding:52px 0}.split-heading,.section-tail{grid-template-columns:1fr;gap:15px}.section-tail .text-link{justify-self:start}.evidence-example{grid-template-columns:1fr;margin-top:28px}.example-question{border-right:0;border-bottom:1px solid var(--line);padding:26px}.example-question p{font-size:31px;margin-top:20px}.example-source{padding:26px}.example-source>p{font-size:23px}.levels li{grid-template-columns:35px 1fr;gap:14px;padding:24px 0}.level-tag{grid-column:2;text-align:left}.levels h3{font-size:25px}.laboratory,.other-race{margin:0 -24px;padding:45px 24px}.laboratory .split-heading{gap:10px}.experiment-strip{grid-template-columns:1fr;margin-top:28px}.experiment-strip article{padding:27px 0}.experiment-strip article+article{border-left:0;border-top:1px solid #c5b8a5;padding:27px 0 0}.journey{grid-template-columns:1fr 1fr;gap:32px 25px}.journey li:nth-child(2):after{display:none}.journey-caption{display:block}.journey-caption span{display:block}.boundary{padding:24px}.boundary p{font-size:24px}.reading-routes{grid-template-columns:1fr;gap:26px}.chapter-link{grid-template-columns:55px 1fr 18px;gap:15px;padding:22px 0}.chapter-number{font-size:10px;overflow-wrap:anywhere}.chapter-link h3{font-size:23px}.chapter-link p{font-size:13px}.chapter-arrow{font-size:20px}.learning-list{margin-top:10px}.audiences{gap:24px}.audiences h3{font-size:23px}.book-format{padding:30px 24px;margin:0 -24px}.format-grid{gap:24px}.book-button{font-size:12px}.footer-inner{flex-wrap:wrap;gap:15px;padding-top:28px;padding-bottom:28px}.footer-inner p{width:100%}.chapter-layout{display:flex;flex-direction:column;gap:30px;padding-top:30px}.chapter-toc{position:static;width:100%}.chapter-toc ol{display:flex;gap:8px;flex-wrap:wrap}.chapter-toc a{border:1px solid var(--line);padding:9px 12px;min-height:40px}.chapter-toc a[aria-current=page]{border:1px solid var(--rust);padding:9px 12px}.chapter-toc .eyebrow{margin-bottom:12px}.chapter-hero{padding-top:28px;padding-bottom:30px}.breadcrumb{margin-bottom:26px}.chapter-summary{font-size:18px}.chapter-hook{font-size:24px}.chapter-hero h1{font-size:40px;letter-spacing:-1px}.chapter-panel{margin-bottom:32px}.chapter-panel h2{font-size:28px}.chapter-idea p{font-size:28px}.chapter-buy{display:block}.chapter-buy p{margin-bottom:25px}.chapter-nav{gap:20px}.chapter-nav a{font-size:13px}.visual-panel{padding:22px}.dual-field{grid-template-columns:1fr;gap:10px}.figure-grid{grid-template-columns:1fr;gap:35px}.figure-large{padding:10px}.figure-preview{grid-template-columns:85px 1fr;gap:18px}.figure-preview img{width:85px}.figure-preview h3{font-size:22px}}
@media(max-width:420px){.audiences{grid-template-columns:1fr}.hero-cover{width:74%}.book-actions{gap:12px 18px}.book-actions .text-link{font-size:13px}.format-grid{grid-template-columns:1fr;gap:15px}.format-grid p{margin-bottom:8px}.journey h3{font-size:23px}.hero-strip b{padding:0 3px}.hero-strip{letter-spacing:.7px}.chapter-hero h1{font-size:36px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
.chapter-idea>.eyebrow,.chapter-question>.eyebrow,.boundary>.eyebrow{font:11px/1.5 Consolas,'Courier New',monospace;letter-spacing:1.65px;margin-bottom:16px}
.skip-link:not(:focus){opacity:0;pointer-events:none}
@media(max-width:760px){.chapter-link{grid-template-columns:1fr 20px;gap:9px}.chapter-number{grid-column:1/-1;font-size:11px;overflow-wrap:normal;padding-top:0}.chapter-link>div{grid-column:1}.chapter-arrow{grid-column:2;grid-row:2}}
@media print{.site-header,.site-footer,.chapter-toc,.book-actions,.chapter-buy,.chapter-nav{display:none}body{background:white;color:black}.book-main{max-width:none}.book-section{padding:25px 0}.chapter-layout{display:block}.laboratory,.other-race{margin:0}.chapter-panel,figure{break-inside:avoid}}

.reading-header{max-width:820px;padding:42px 0 36px}.reading-header h1{font-size:clamp(42px,5.2vw,68px);line-height:1.07;letter-spacing:-2px;margin:18px 0 24px}.reading-byline{font-size:14px;color:var(--muted)}.reading-byline span{padding:0 9px}.reading-layout{max-width:760px;margin:0 auto 70px}.reading-index{border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin:0 0 46px}.reading-index summary{cursor:pointer;padding:18px 0;font-size:15px;font-weight:600;min-height:48px}.reading-index ol{list-style:none;padding:0 0 20px;margin:0}.reading-index li a{display:block;padding:9px 0;font-size:15px;line-height:1.5}.reading-text{font:20px/1.85 Georgia,'Times New Roman',serif}.reading-text section{scroll-margin-top:16px;margin-bottom:58px}.reading-text h2{font-size:clamp(29px,3vw,38px);line-height:1.25;letter-spacing:-.7px;margin:0 0 28px;text-wrap:pretty}.reading-text p{margin:0 0 25px;overflow-wrap:break-word}.reading-end{border-top:1px solid var(--line);padding-top:28px;font:13px/1.7 'Segoe UI',Arial,sans-serif;color:var(--muted)}.reading-end p{margin-bottom:8px}.reading-end a{display:inline-block;padding:12px 0}.reading-end p:first-child{color:var(--rust);font-family:Consolas,monospace;letter-spacing:1px;text-transform:uppercase}@media(max-width:760px){.reading-header{padding-top:28px}.reading-header h1{letter-spacing:-1.3px}.reading-text{font-size:19px;line-height:1.8}.reading-text section{margin-bottom:42px}.reading-index{margin-bottom:34px}.reading-byline{max-width:270px}}@media print{.reading-index,.reading-end a{display:none}.reading-layout{max-width:none}.reading-text{font-size:12pt;line-height:1.6}.reading-text h2{break-after:avoid}.reading-text p{orphans:3;widows:3}}
.manuscript-visual{margin:36px 0 46px;border:1px solid var(--line);background:var(--white)}.manuscript-image{display:block;padding:24px}.manuscript-image img{width:100%;height:auto}.manuscript-visual figcaption{display:flex;align-items:center;justify-content:space-between;gap:30px;padding:22px 26px;border-top:1px solid var(--line);background:var(--paper)}.manuscript-visual .eyebrow{display:block;margin-bottom:9px}.manuscript-visual figcaption p{font-size:15px;line-height:1.6;max-width:640px;margin:0}.manuscript-visual .text-link{flex-shrink:0}@media(max-width:760px){.manuscript-image{padding:10px}.manuscript-visual{margin:28px 0 35px}.manuscript-visual figcaption{display:block;padding:20px}.manuscript-visual .text-link{margin-top:12px}}
