:root {
  --paper: #fcfaf7;
  --ink: #20242b;
  --muted: #535e6c;
  --navy: #173e71;
  --rule: #dcd8d1;
  --serif: Georgia, 'Times New Roman', serif;
  --sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Arial, sans-serif;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 24px; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: var(--sans); font-size: 18px; line-height: 1.65; -webkit-font-smoothing: antialiased; }
a { color: var(--navy); text-underline-offset: .24em; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
a:focus-visible, summary:focus-visible { outline: 2px solid var(--navy); outline-offset: 5px; border-radius: 1px; }
img, svg { display: block; max-width: 100%; }
img { height: auto; }
figure { margin: 0; }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { font-family: var(--serif); color: var(--ink); }
h1 { font-size: clamp(36px, 4.3vw, 53px); line-height: 1.14; letter-spacing: -.035em; }
h2 { font-size: clamp(29px, 3.5vw, 39px); line-height: 1.18; letter-spacing: -.025em; }
h3 { font-size: 27px; line-height: 1.25; letter-spacing: -.018em; }
p { margin-bottom: 1.3em; }
.wrap { width: min(1080px, calc(100% - 112px)); margin-inline: auto; }
.site-header { min-height: 82px; border-bottom: 1px solid var(--rule); display: flex; justify-content: flex-end; align-items: center; }
.site-nav { display: flex; gap: 38px; align-items: center; }
.site-nav a { display: inline-block; padding: 20px 0 15px; color: var(--ink); text-decoration: none; font-size: 17px; position: relative; }
.site-nav a[aria-current='page']::after { content: ''; position: absolute; height: 2px; background: var(--navy); bottom: 10px; left: 0; right: 0; }
.site-nav a:hover { color: var(--navy); }
.skip-link { position: absolute; top: -100px; left: 16px; background: var(--paper); padding: 12px; z-index: 20; }
.skip-link:focus { top: 8px; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.accent { width: 64px; height: 4px; display: block; background: var(--navy); margin-bottom: 28px; }
.hero { padding: 63px 0 56px; border-bottom: 1px solid var(--rule); }
.hero h1 { margin-bottom: 22px; max-width: 1040px; }
.hero p { font-size: 21px; line-height: 1.6; max-width: 890px; margin-bottom: 0; }
.section { padding-top: 41px; }
.section-heading { margin-bottom: 17px; }
.section > .accent { width: 52px; height: 3px; margin-bottom: 29px; }
.post-list { list-style: none; padding: 0; margin: 0; }
.post-item { padding: 26px 0 28px; border-bottom: 1px solid var(--rule); }
.post-item:first-child { padding-top: 0; }
.post-item h3 { margin: 0 0 8px; }
.post-item h3 a { color: var(--ink); text-decoration: none; }
.post-item h3 a:hover { color: var(--navy); text-decoration: underline; }
.post-meta { font-size: 12px; line-height: 1.6; letter-spacing: .15em; text-transform: uppercase; font-weight: 650; color: var(--muted); display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 7px; }
.meta-divider { color: #aaa399; }
.post-item p { max-width: 900px; font-size: 18px; line-height: 1.55; margin: 0; }
.selected { padding-bottom: 57px; }
.selected-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.eyebrow { font-size: 12px; line-height: 1.5; color: var(--navy); letter-spacing: .14em; font-weight: 650; text-transform: uppercase; margin-bottom: 13px; }
.home-book-content { display: grid; grid-template-columns: 136px minmax(0, 1fr); gap: 23px; align-items: start; }
.home-book-content h3 { font-size: 23px; line-height: 1.3; font-weight: 400; margin-bottom: 18px; }
.book-cover-link { display: block; }
.book-cover { border-radius: 2px; }
.text-link { font-size: 16px; font-weight: 600; }
.frameworks { border-left: 1px solid var(--rule); padding-left: 40px; }
.framework + .framework { border-top: 1px solid var(--rule); padding-top: 20px; margin-top: 21px; }
.framework h3 { margin: 0 0 6px; font-size: 25px; }
.framework p { margin: 0 0 5px; font-size: 17px; line-height: 1.55; }
.site-footer { border-top: 1px solid var(--rule); padding: 24px 0 35px; color: var(--muted); font-size: 13px; display: flex; gap: 20px; align-items: flex-start; justify-content: space-between; }
.site-footer p { margin: 0; }
.site-footer a { color: var(--muted); }
.footer-links { display: flex; gap: 26px; }
.about-layout { padding: 57px 0 59px; display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr); gap: 43px; }
.about-copy h1 { margin-bottom: 10px; }
.about-subtitle { color: var(--muted); font-size: 22px; line-height: 1.5; margin-bottom: 36px; }
.bio { font-size: 17.5px; line-height: 1.8; }
.bio p { margin-bottom: 25px; }
.about-aside { padding: 24px 0 0 33px; border-left: 1px solid var(--rule); margin-top: 18px; }
.venn { width: 100%; }
.venn-caption { font-size: 14px; font-style: italic; line-height: 1.55; text-align: center; margin: 14px 0 30px; }
.aside-book { border-top: 1px solid var(--rule); padding-top: 27px; }
.aside-book .book-cover-link { width: 176px; margin: 0 auto 23px; }
.aside-book .eyebrow { margin-bottom: 8px; }
.aside-book h2 { font-size: 29px; font-style: italic; margin-bottom: 12px; }
.aside-book p:not(.eyebrow) { font-size: 16px; line-height: 1.55; margin-bottom: 15px; }
.about-links { margin-top: 35px; padding-top: 22px; border-top: 1px solid var(--rule); display: flex; gap: 28px; flex-wrap: wrap; }
.disclaimer { margin: 24px 0 0; font-size: 12px; line-height: 1.6; color: var(--muted); }
.reading { width: min(760px, 100%); margin: 0 auto; }
.article-header { padding: 46px 0 28px; }
.back-link { display: inline-block; font-size: 15px; margin-bottom: 38px; }
.article-header .eyebrow { margin-bottom: 18px; }
.article-header h1 { font-size: clamp(37px, 4.5vw, 52px); line-height: 1.14; margin-bottom: 25px; }
.article-byline { display: flex; gap: 12px; flex-wrap: wrap; align-items: baseline; font-size: 14px; color: var(--muted); margin-bottom: 0; }
.article-byline a { color: var(--navy); }
.article-toc { margin-bottom: 32px; padding: 17px 0; border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule); font-size: 15px; }
.article-toc summary { cursor: pointer; color: var(--navy); }
.article-toc ol { margin: 14px 0 0; padding-left: 25px; }
.article-toc li { margin-bottom: 6px; }
.prose { font-size: 19px; line-height: 1.82; }
.prose p { margin-bottom: 1.35em; }
.prose h2 { font-size: 30px; line-height: 1.28; margin: 45px 0 22px; }
.prose ul { padding-left: 25px; margin: 0 0 27px; }
.prose li { margin: 0 0 15px; padding-left: 4px; }
.prose em { font-style: italic; }
.article-end { padding: 27px 0 0; margin-top: 40px; border-top: 1px solid var(--rule); }
.article-end h2 { font-size: 23px; margin-bottom: 12px; }
.article-end p { font-size: 16px; margin-bottom: 14px; }
.related-links { list-style: none; padding: 0; margin: 0; font-size: 16px; }
.related-links li { margin-bottom: 9px; }
.article-footer-space { margin-bottom: 56px; }
.not-found { padding: 80px 0 120px; max-width: 720px; }
.not-found p { max-width: 600px; }
@media (min-width: 1450px) { .wrap { width: 1080px; } }
@media (max-width: 1023px) {
  .wrap { width: calc(100% - 72px); }
  .home-book-content { grid-template-columns: 110px minmax(0,1fr); gap: 18px; }
  .selected-grid { gap: 28px; }
  .frameworks { padding-left: 28px; }
  .about-layout { gap: 27px; grid-template-columns: minmax(0,1.45fr) minmax(0,1fr); }
  .about-aside { padding-left: 24px; }
  .bio { font-size: 17px; }
}
@media (max-width: 760px) {
  .wrap { width: calc(100% - 44px); }
  .site-header { min-height: 70px; }
  .site-nav { gap: 28px; }
  .site-nav a { font-size: 16px; padding: 16px 0 14px; }
  .hero { padding: 42px 0 35px; }
  .hero h1 { font-size: clamp(34px, 6.8vw, 45px); line-height: 1.15; margin-bottom: 19px; }
  .desktop-break { display: none; }
  .hero p { font-size: 18px; line-height: 1.6; }
  .accent { margin-bottom: 23px; width: 52px; height: 3px; }
  .section { padding-top: 32px; }
  .section > .accent { margin-bottom: 24px; }
  .post-item h3 { font-size: 25px; }
  .post-item p { font-size: 16.5px; }
  .post-item { padding: 23px 0; }
  .post-meta { font-size: 11px; letter-spacing: .11em; }
  .selected-grid { grid-template-columns: 1fr; gap: 27px; }
  .home-book-content { grid-template-columns: 122px minmax(0,1fr); }
  .home-book-content h3 { font-size: 24px; }
  .frameworks { border-left: none; padding-left: 0; padding-top: 24px; border-top: 1px solid var(--rule); }
  .framework h3 { font-size: 25px; }
  .selected { padding-bottom: 36px; }
  .site-footer { font-size: 12px; padding: 23px 0 30px; gap: 15px; flex-wrap: wrap; }
  .footer-links { gap: 21px; }
  .about-layout { display: block; padding-top: 38px; padding-bottom: 35px; }
  .about-copy h1 { font-size: 43px; }
  .about-subtitle { font-size: 19px; margin-bottom: 28px; }
  .bio { font-size: 17px; line-height: 1.8; }
  .about-aside { margin-top: 35px; padding: 32px 0 0; border-left: none; border-top: 1px solid var(--rule); }
  .venn { max-width: 390px; margin-inline: auto; }
  .venn-caption { max-width: 390px; margin-inline: auto; }
  .aside-book { max-width: 390px; margin-inline: auto; }
  .aside-book .book-cover-link { width: 168px; }
  .article-header { padding-top: 30px; }
  .back-link { margin-bottom: 28px; }
  .article-header h1 { font-size: 37px; }
  .article-byline { gap: 8px; font-size: 13px; }
  .prose { font-size: 18px; line-height: 1.8; }
  .prose h2 { font-size: 27px; }
}
@media (max-width: 380px) {
  .wrap { width: calc(100% - 36px); }
  .home-book-content { grid-template-columns: 100px minmax(0,1fr); gap: 17px; }
  .home-book-content h3 { font-size: 21px; }
  .article-header h1 { font-size: 34px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
@media print {
  body { background: white; color: black; font-size: 12pt; }
  .wrap, .reading { width: 100%; max-width: 100%; }
  .site-header, .site-footer, .skip-link, .article-toc, .back-link, .article-end { display: none; }
  .article-header { padding-top: 0; }
  .prose { font-size: 11pt; line-height: 1.55; }
  .prose h2 { font-size: 19pt; break-after: avoid; }
  .article-header h1 { font-size: 28pt; }
  .prose p, .prose li { orphans: 3; widows: 3; }
  a { color: inherit; }
}