:root { color-scheme: light; --paper: #f8f3ec; --ink: #171210; --muted: #685952; --accent: #98122d; --line: #dfd6cb; --surface: #eee7de; --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace; }
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 2rem; overflow-x: clip; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 1rem/1.65 var(--sans); -webkit-font-smoothing: antialiased; overflow-wrap: anywhere; overflow-x: clip; }
::selection { background: #881337; color: #ffffff; }
a { color: inherit; text-underline-offset: .25em; }
a:hover { color: var(--accent); }
a:focus-visible { outline: 2px solid var(--accent); outline-offset: 6px; }
.site-shell { max-width: 1184px; margin: auto; padding: 0 48px; }
.site-header { display: flex; align-items: center; justify-content: space-between; gap: 2rem; padding: 22px 0; border-bottom: 1px solid var(--line); }
.brand { display: flex; align-items: center; gap: 13px; font-size: 16px; font-weight: 650; text-decoration: none; letter-spacing: -.4px; }
.site-header nav ul { display: flex; align-items: center; gap: 30px; padding: 0; margin: 0; list-style: none; }
.site-header nav a { position: relative; text-decoration: none; color: var(--muted); font-size: 13px; }
.site-header nav a[aria-current="page"] { color: var(--ink); font-weight: 600; }
.nav-feed { padding-left: 25px; border-left: 1px solid var(--line); }
main { min-height: 65vh; padding-bottom: 80px; }
.eyebrow { display: flex; align-items: center; gap: 10px; font: 13px/1.6 var(--sans); color: var(--muted); margin: 0 0 16px; }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { line-height: 1.12; }
h1 { font-size: clamp(42px, 5.7vw, 72px); font-weight: 550; letter-spacing: -.055em; margin-bottom: 24px; }
.intro { color: var(--muted); font-size: 17px; line-height: 1.75; max-width: 430px; }
.text-link { display: inline-flex; gap: 28px; align-items: center; font-size: 12px; font-weight: 600; text-decoration: none; }
.text-link span { color: var(--accent); font-size: 20px; }
.section-heading { display: flex; align-items: baseline; justify-content: space-between; border-bottom: 1px solid var(--line); padding-bottom: 12px; }
.section-heading h2 { font-size: 20px; font-weight: 550; letter-spacing: -.5px; margin: 0; }
.meta { font: 12px/1.7 var(--sans); color: var(--muted); }
.articles { list-style: none; padding: 0; margin: 0; }
.articles > li { border-bottom: 1px solid var(--line); }
.article-card { display: grid; grid-template-columns: 130px 1fr; gap: 24px; padding: 24px 0; }
.article-date { display: flex; flex-direction: column; align-items: flex-start; gap: 22px; padding-top: 2px; }
.article-topics { display: flex; gap: 12px; flex-wrap: wrap; color: var(--muted); font: 12px/1.7 var(--sans); margin-bottom: 7px; }
.article-summary h3 { font-size: 28px; font-weight: 550; letter-spacing: -.7px; margin-bottom: 12px; }
.article-summary h3 a { display: flex; justify-content: space-between; gap: 20px; text-decoration: none; }
.article-summary p { color: var(--muted); font-size: 14px; margin-bottom: 0; max-width: 620px; }
.site-footer { display: flex; align-items: flex-start; justify-content: space-between; gap: 32px; padding: 29px 0 36px; border-top: 1px solid var(--line); }
.footer-brand { font-size: 12px; font-weight: 650; text-decoration: none; }
.site-footer p { margin: 7px 0 0; font-size: 11px; color: var(--muted); }
.page-heading { padding: 70px 0 35px; }
.page-heading .intro { max-width: 650px; }
.reading-page { max-width: 730px; margin: auto; }
.reading-page .page-heading { border-bottom: 1px solid var(--line); }
.back-link { display: inline-block; font: 11px var(--mono); color: var(--muted); margin-bottom: 38px; text-decoration: none; }
.page-heading .meta span { margin: 0 10px; }
.tags { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; padding: 0; margin: 22px 0 0; }
.tags a { display: block; border: 1px solid var(--line); padding: 4px 10px; border-radius: 3px; font: 12px/1.6 var(--sans); text-decoration: none; color: var(--accent); }
.prose { font: 19px/1.85 Georgia, serif; margin-top: 40px; }
.prose h2, .prose h3 { font-family: var(--sans); letter-spacing: -.035em; margin: 2em 0 .7em; font-weight: 600; }
.prose h2 { font-size: 28px; }
.prose h3 { font-size: 23px; }
.prose a { color: var(--accent); }
.prose p, .prose ul, .prose ol { margin-bottom: 1.4em; }
img, video { max-width: 100%; height: auto; }
.image-figure { display: block; margin: 2.2em 0; padding: 0; border: 0; clear: both; }
.image-figure img, .image-figure svg { display: block; width: 100%; height: auto; border-radius: 2px; }
.image-figure figcaption { margin-top: 10px; font: 13px/1.6 var(--sans); color: var(--muted); letter-spacing: -.01em; }
.image-figure figcaption strong { color: var(--ink); font-weight: 600; }
.image-figure.image-default { max-width: 100%; }
.image-figure.image-float-left { float: left; max-width: 44%; margin: .4rem 2rem 1.4rem 0; clear: left; }
.image-figure.image-float-right { float: right; max-width: 44%; margin: .4rem 0 1.4rem 2rem; clear: right; }
.image-figure.image-wide { width: min(calc(100vw - 96px), 1088px); max-width: min(calc(100vw - 96px), 1088px); margin-left: calc((100% - min(calc(100vw - 96px), 1088px)) / 2); margin-right: calc((100% - min(calc(100vw - 96px), 1088px)) / 2); margin-top: 3em; margin-bottom: 3em; }
.image-figure.image-bleed { width: 100vw; max-width: 100vw; margin-left: calc(50% - 50vw); margin-right: calc(50% - 50vw); margin-top: 3.5em; margin-bottom: 3.5em; }
.image-figure.image-bleed img, .image-figure.image-bleed svg { border-radius: 0; }
.image-figure.image-bleed figcaption { max-width: 730px; margin: 12px auto 0; padding: 0 20px; }
.image-figure.image-narrow { max-width: 380px; margin: 2.2em auto; text-align: center; }
.image-figure.image-narrow figcaption { text-align: center; }
.image-figure.image-frame img, .image-figure.image-frame svg, img.image-frame { border: 1px solid var(--line); border-radius: 4px; background: var(--surface); }
.image-pixelated, .image-figure.image-pixelated img { image-rendering: pixelated; }
pre { overflow-x: auto; padding: 24px; border: 1px solid var(--line); border-radius: 4px; background: var(--surface); line-height: 1.7; }
code { font-family: var(--mono); font-size: .78em; }
:not(pre) > code { background: var(--surface); padding: .15em .35em; border-radius: 3px; }
table { display: block; overflow-x: auto; border-collapse: collapse; font-size: .9em; }
th, td { padding: .6rem 1rem; border: 1px solid var(--line); text-align: left; }
blockquote { margin: 2rem 0; border-left: 2px solid var(--accent); padding: .2rem 0 .2rem 1.5rem; color: var(--muted); font-style: italic; }
blockquote p:last-child { margin-bottom: 0; }
.article-end { margin-top: 60px; display: flex; align-items: center; justify-content: space-between; color: var(--accent); border-top: 1px solid var(--line); padding-top: 25px; }
.tag-list { list-style: none; padding: 0; margin: 0; border-top: 1px solid var(--ink); }
.tag-list li { border-bottom: 1px solid var(--line); }
.tag-list a { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 25px 0; text-decoration: none; font-size: 23px; }
.topic-arrow { margin-left: 30px; font-size: 20px; }
.accent { color: var(--accent); }
.empty-state { padding: 30px 0; color: var(--muted); }
.skip { position: absolute; top: -10rem; background: var(--ink); color: var(--paper); padding: 12px; z-index: 2; }
.skip:focus { top: 12px; }
main > .eyebrow:first-child { margin-top: 70px; }
@media (prefers-color-scheme: dark) {
  :root { color-scheme: dark; --paper: #0e0a0d; --ink: #f7eef1; --muted: #937e89; --accent: #f43f5e; --line: #25171e; --surface: #181015; }
  ::selection { background: #881337; color: #ffffff; }
  .image-figure.image-invert-dark img, .image-figure.image-invert-dark svg, img.image-invert-dark { filter: invert(0.9) hue-rotate(180deg); }
}
@media (max-width: 760px) {
  .site-shell { padding: 0 25px; }
  .image-figure.image-float-left, .image-figure.image-float-right { float: none; max-width: 100%; margin: 2em 0; }
  .image-figure.image-wide { width: 100%; max-width: 100%; margin-left: 0; margin-right: 0; }
  .image-figure.image-bleed figcaption { padding: 0 25px; }
  .article-card { grid-template-columns: 130px 1fr; }
  .site-header nav ul { gap: 20px; } .nav-feed { display: none; }
}
@media (max-width: 540px) {
  .site-shell { padding: 0 22px; } .site-header { gap: 16px; padding: 22px 0; flex-wrap: wrap; }
  .brand { font-size: 14px; gap: 9px; }
  .site-header nav ul { gap: 16px; } .site-header nav a { font-size: 11px; }
  .article-card { grid-template-columns: 1fr; gap: 17px; padding: 25px 0; }
  .article-date { flex-direction: row; justify-content: space-between; }
  .article-summary h3 { font-size: 26px; }
  main { padding-bottom: 48px; } .site-footer { gap: 22px; } .site-footer > div { max-width: 220px; }
  .page-heading { padding-top: 45px; } .prose { font-size: 18px; } .tag-list a { font-size: 20px; }
  .image-figure.image-bleed figcaption { padding: 0 22px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { transition: none !important; } }

/* Independent grid columns give the introduction and flock room to breathe. */
.notebook-intro { position: relative; isolation: isolate; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 440px); align-items: center; gap: 32px; padding: 24px 0 28px; }
.notebook-copy { position: relative; grid-column: 1; grid-row: 1; max-width: 490px; }
.system-field { position: relative; grid-column: 2; grid-row: 1; width: 100%; aspect-ratio: 6 / 5; min-width: 0; }
.notebook-intro h1 { font: 550 32px/1.25 var(--sans); letter-spacing: -.025em; margin-bottom: 16px; max-width: 400px; }
.notebook-intro .intro { font-size: 15px; max-width: 390px; margin-bottom: 0; }
.system-field svg { width: 100%; height: 100%; overflow: visible; }
.section-heading h2 { font-size: 16px; }
.article-summary h3 { font: 550 23px/1.3 var(--sans); letter-spacing: -.02em; }
.article-date { justify-content: center; }
.article-topics { text-transform: none; letter-spacing: .01em; color: var(--muted); }
.brand { font-weight: 500; }
.brand-mark { color: var(--ink); font: italic 25px/1 Georgia, serif; }
.brand-mark span { color: var(--accent); }
.footer-feed { font: 12px/1.7 var(--sans); color: var(--muted); text-decoration: none; white-space: nowrap; }
@media (max-width: 760px) {
  .notebook-intro { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 20px; padding: 28px 0; }
  .notebook-intro h1 { font-size: 29px; }
}
@media (max-width: 540px) {
  .notebook-intro { padding: 28px 0; }
  .notebook-intro h1 { font-size: 28px; }
  .notebook-copy { max-width: 100%; }
  .notebook-intro .intro { max-width: 290px; }
}

/* Autonomous agents share the space; motion never changes the reading layout. */
.notebook-copy { z-index: 1; }
.flock-canvas, .flock-fallback { position: absolute; width: 100%; height: 100%; inset: 0; }
.flock-canvas { display: none; }
.flock-ready .flock-canvas { display: block; }
.flock-ready .flock-fallback { display: none; }
.boid-0 { fill: #4d3935; } .boid-1 { fill: #98122d; } .boid-2 { fill: #b91c32; }
.flock-toggle { position: absolute; bottom: 12px; right: 8px; max-width: calc(100% - 16px); min-height: 44px; white-space: nowrap; border: 0; border-bottom: 1px solid var(--line); background: transparent; color: var(--muted); font: 12px/1.8 var(--sans); padding: 4px 0; cursor: pointer; }
.flock-toggle:hover { color: var(--ink); }
.flock-toggle:focus-visible { outline: 2px solid var(--accent); outline-offset: 5px; }
@media (prefers-color-scheme: dark) { .boid-0 { fill: #a8929e; } .boid-1 { fill: #f43f5e; } .boid-2 { fill: #fb7185; } }
@media (max-width: 760px) {
  .notebook-copy { max-width: 100%; }
}
@media (max-width: 540px) {
  .notebook-intro { grid-template-columns: minmax(0, 1fr); gap: 12px; padding-bottom: 24px; }
  .system-field { grid-column: 1; grid-row: 2; max-width: 360px; justify-self: center; }
  .notebook-copy { order: -1; max-width: 100%; }
  .flock-toggle { bottom: 0; right: 8px; }
}

.series-nav { margin: 28px 0 32px; padding: 19px 22px; border: 1px solid var(--line); border-radius: 3px; background: var(--surface); }
.series-nav summary { cursor: pointer; font-size: 14px; }
.series-nav summary strong { display: block; margin: 5px 0 0 15px; font-weight: 550; }
.series-parts { padding-left: 1.6rem; margin: 18px 0 0; font-size: 13px; }
.series-parts li { padding: 6px 0 6px 4px; }
.series-parts li::marker { font: 11px var(--mono); color: var(--muted); }
.series-parts [aria-current="page"] { color: var(--accent); font-weight: 600; }
.series-status { display: inline-block; margin-left: 12px; font: 10px var(--mono); color: var(--muted); font-weight: 400; }
.series-pagination { display: flex; gap: 24px; margin-top: 42px; padding-top: 24px; border-top: 1px solid var(--line); }
.series-pagination a { flex: 1; min-width: 0; font-size: 14px; text-decoration: none; }
.series-pagination .meta { display: block; margin-bottom: 7px; }
.series-pagination [rel="next"] { text-align: right; margin-left: auto; }
.series-nav summary:focus-visible { outline: 2px solid var(--accent); outline-offset: 5px; }
@media (max-width: 540px) { .series-nav { padding: 16px; } .series-pagination { flex-direction: column; } }