/* Authored production CSS. No runtime styling, remote fonts, or frameworks. */
:root {
  color-scheme: light;
  --bg: #f8faf9; --surface: #fff; --surface-2: #eef3ef;
  --text: #17251e; --muted: #52665b; --line: #d7e1da; --line-strong: #74897b;
  --accent: #08754e; --accent-soft: #e1f2e8; --focus: #215ac1;
  --ink: #13271d; --on-ink: #f1f8f3; --ink-muted: #baccc1;
  --mono: ui-monospace, SFMono-Regular, Consolas, monospace;
}
:root[data-theme="dark"] {
  color-scheme: dark; --bg: #0d1512; --surface: #131f19; --surface-2: #192a21;
  --text: #edf5ef; --muted: #acbfb2; --line: #304338; --line-strong: #698473;
  --accent: #73ddb0; --accent-soft: #183a2b; --focus: #9abaff;
  --ink: #172e22; --on-ink: #f1f8f3; --ink-muted: #baccc1;
}
* { box-sizing: border-box; }
html { scroll-padding-top: 105px; }
body { margin: 0; background: var(--bg); color: var(--text); font: 17px/1.65 ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; -webkit-font-smoothing: antialiased; }
[hidden] { display: none !important; }
::selection { background: var(--accent-soft); color: var(--text); }
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 5px; }
a:hover { color: var(--accent); }
button, input, textarea, select { font: inherit; }
button, summary, a { -webkit-tap-highlight-color: transparent; touch-action: manipulation; }
button, summary { cursor: pointer; }
button { color: inherit; }
button:disabled { cursor: default; opacity: .42; }
img, svg { max-width: 100%; }
img { display: block; height: auto; }
p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }
h1, h2, h3 { text-wrap: balance; }
h1, h2 { font-weight: 650; letter-spacing: -.047em; }
h1 { font-size: clamp(48px, 5.8vw, 80px); line-height: 1.04; }
h2 { font-size: clamp(32px, 3.4vw, 47px); line-height: 1.14; margin: 0; }
h3 { font-size: 24px; line-height: 1.25; letter-spacing: -.025em; margin: 0 0 20px; font-weight: 650; }
strong { font-weight: 650; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 5px; }
main:focus, section[tabindex="-1"]:focus { outline: none; }
.wrap { width: min(1200px, calc(100% - 80px)); margin-inline: auto; }
.section { padding-block: 104px; position: relative; }
.legacy-anchor { position: absolute; top: 0; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }
.skip-link { position: fixed; top: 8px; left: 20px; padding: 12px 20px; z-index: 100; background: var(--text); color: var(--bg); transform: translateY(-180%); border-radius: 6px; }
.skip-link:focus { transform: translateY(0); }
.site-header { position: sticky; top: 0; z-index: 30; background: var(--bg); border-bottom: 1px solid var(--line); }
.header-inner { display: flex; align-items: center; gap: 22px; min-height: 84px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; flex-shrink: 0; font-size: 24px; letter-spacing: .06em; font-weight: 800; line-height: 1; }
.brand img { width: 42px; height: 44px; background: #f8faf9; border-radius: 50%; padding: 3px; }
.brand-x { color: var(--accent); }
.brand small { display: block; font: 10px/1 var(--mono); letter-spacing: .35em; margin-top: 5px; }
.header-controls { display: flex; align-items: center; gap: 12px; margin-left: auto; order: 2; min-width: 44px; }
#primary-nav { display: flex; align-items: center; gap: 20px; margin-left: auto; }
#primary-nav a { font-size: 14px; text-decoration: none; min-height: 44px; display: inline-flex; align-items: center; gap: 6px; }
#primary-nav a:not(.button):hover { text-decoration: underline; }
.icon-button { display: inline-grid; place-items: center; min-width: 44px; min-height: 44px; border: 1px solid var(--line-strong); border-radius: 50%; background: transparent; font-size: 21px; }
.icon-button:hover:not(:disabled) { background: var(--accent-soft); }
.menu-toggle { display: none; background: transparent; border: 1px solid var(--line-strong); border-radius: 6px; min-height: 44px; padding: 6px 12px; gap: 10px; align-items: center; font-size: 14px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 20px; min-height: 50px; padding: 12px 22px; border: 1px solid var(--text); border-radius: 999px; background: var(--text); color: var(--bg); font-weight: 600; font-size: 15px; text-decoration: none; line-height: 1.45; }
.button:hover { background: var(--accent); border-color: var(--accent); color: var(--bg); }
.button-outline { color: var(--text); background: transparent; border-color: var(--line-strong); }
.button-small { min-height: 44px; padding: 9px 16px; }
.actions { display: flex; gap: 14px; align-items: center; flex-wrap: wrap; }
.eyebrow { font: 600 11px/1.7 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--accent); margin-bottom: 22px; }
.hero { border-bottom: 1px solid var(--line); overflow: hidden; }
.hero-inner { position: relative; padding-top: 98px; padding-bottom: 84px; min-height: 715px; }
.hero-copy { position: relative; z-index: 1; max-width: 900px; }
.hero h1 { max-width: 900px; margin: 0 0 30px; }
.hero-lede { font-size: 22px; line-height: 1.6; max-width: 725px; color: var(--muted); margin-bottom: 16px; }
.hero-support { color: var(--muted); max-width: 620px; font-size: 15px; }
.hero .actions { margin-top: 32px; }
.root-motif { position: absolute; width: 590px; height: 590px; bottom: -100px; right: -115px; color: var(--line-strong); opacity: .3; pointer-events: none; }
.root-motif path { stroke-width: 1.3; }
.root-motif .active-path { stroke: var(--accent); stroke-width: 2; }
.root-nodes circle { fill: var(--bg); stroke: var(--accent); stroke-width: 1.5; }
.hero-note { display: flex; align-items: center; gap: 10px; font: 10px var(--mono); letter-spacing: .16em; color: var(--muted); margin-top: 58px; }
.signal-dot { width: 6px; height: 6px; background: var(--accent); border-radius: 50%; }
.section-heading { display: grid; grid-template-columns: 1.1fr .9fr; gap: 85px; align-items: end; margin-bottom: 48px; }
.section-intro { color: var(--muted); font-size: 16px; }
.section-intro p { margin-bottom: 10px; }
.gratitude-note { margin-top: 24px; font-size: 14px; line-height: 1.7; }
.gratitude-note a { display: inline-block; padding-block: 8px; }
.rail-toolbar { display: flex; align-items: center; justify-content: space-between; min-height: 48px; margin-bottom: 18px; }
.rail-hint { font: 12px var(--mono); color: var(--muted); margin: 0; }
.rail-controls { display: flex; gap: 9px; }
.idea-rail { display: grid; grid-auto-flow: column; grid-auto-columns: calc((100% - 50px) / 3.05); align-items: start; gap: 20px; overflow-x: auto; padding: 6px 2px 25px; scroll-snap-type: x mandatory; scrollbar-width: thin; scrollbar-color: var(--line-strong) transparent; }
.idea-card { position: relative; scroll-snap-align: start; min-height: 465px; border: 1px solid var(--line); background: var(--surface); border-radius: 18px; padding: 26px; display: flex; flex-direction: column; }
.idea-card:target, .idea-card:focus-within, .idea-card:hover { border-color: var(--accent); }
.card-top { display: flex; gap: 8px; justify-content: space-between; align-items: flex-start; min-height: 54px; }
.theme-glyph { color: var(--accent); flex: 0 0 45px; }
.chips { display: flex; gap: 6px; flex-wrap: wrap; align-items: center; }
.status-chip { display: inline-flex; width: max-content; border: 1px solid var(--line); background: var(--surface-2); padding: 5px 8px; border-radius: 4px; font: 600 9px/1.4 var(--mono); letter-spacing: .05em; white-space: nowrap; }
.card-number { font: 12px var(--mono); color: var(--muted); margin: 22px 0 12px; }
.idea-card h3 { font-size: 25px; min-height: 62px; margin-bottom: 18px; }
.idea-thesis { font-size: 16px; line-height: 1.45; min-height: 47px; }
.idea-question { font-size: 15px; color: var(--muted); margin-bottom: 26px; }
.idea-discovery { margin-top: auto; }
.idea-detail { font-size: 14px; }
summary { padding-block: 12px; min-height: 44px; color: var(--accent); font-weight: 600; }
summary:hover { text-decoration: underline; text-underline-offset: 5px; }
details[open] > summary { margin-bottom: 12px; }
.idea-detail p { padding-top: 8px; border-top: 1px solid var(--line); color: var(--muted); }
.systems-strip { position: relative; overflow: hidden; display: grid; grid-template-columns: minmax(0, 1fr) 220px; background: var(--surface-2); color: var(--text); border: 1px solid var(--line); border-radius: 18px; margin-top: 28px; padding: 38px 42px; }
.systems-strip > div { position: relative; z-index: 1; }
.systems-strip h2 { font-size: 32px; margin-bottom: 14px; }
.systems-strip .eyebrow, .systems-strip summary, .systems-strip .text-link { color: var(--accent); }
.systems-strip p:not(.eyebrow) { color: var(--muted); }
.systems-strip .root-motif { width: 400px; height: 400px; right: -110px; bottom: -100px; opacity: .5; color: var(--line-strong); }
.systems-strip .active-path { stroke: var(--accent); }
.systems-strip .root-nodes circle { fill: var(--surface-2); stroke: var(--accent); }
.systems-questions { font-size: 16px; border-top: 1px solid var(--line); padding-top: 20px; }
.builds-section { background: var(--surface); border-block: 1px solid var(--line); }
.evidence-list { display: grid; gap: 30px; }
.evidence-card { display: grid; grid-template-columns: .85fr 1.15fr; border: 1px solid var(--line); border-radius: 18px; overflow: hidden; }
.evidence-visual { margin: 0; background: var(--surface-2); display: flex; flex-direction: column; justify-content: center; padding: 38px; border-right: 1px solid var(--line); }
.diagram-label { font: 11px var(--mono); letter-spacing: .08em; color: var(--muted); margin-bottom: 25px; }
.evidence-visual svg { width: 100%; max-width: 360px; align-self: center; }
.evidence-visual figcaption { font: 12px/1.6 var(--mono); color: var(--muted); text-align: center; margin-top: 28px; }
.diagram-box { fill: var(--surface); stroke: var(--line-strong); }
.diagram-active { fill: var(--accent-soft); stroke: var(--accent); }
.diagram-line { fill: none; stroke: var(--line-strong); stroke-width: 1.5; }
.arrow-head { fill: var(--accent); }
.evidence-visual text { fill: var(--text); font: 14px ui-sans-serif, system-ui, sans-serif; }
.evidence-copy { padding: 38px 42px; }
.evidence-copy h3 { font-size: 28px; margin-top: 22px; }
.evidence-meta { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.topic { font: 9px/1.6 var(--mono); letter-spacing: .05em; color: var(--muted); }
.prose { font-size: 16px; color: var(--muted); }
.prose p { margin-bottom: 13px; }
.prose strong { color: var(--text); }
.evidence-copy .text-link { margin-top: 20px; }
.evidence-card:nth-child(even) { grid-template-columns: 1.15fr .85fr; }
.evidence-card:nth-child(even) .evidence-visual { order: 2; border-right: 0; border-left: 1px solid var(--line); }
.text-link { display: inline-flex; align-items: center; gap: 12px; color: var(--accent); min-height: 44px; font-size: 14px; font-weight: 600; }
.idea-discovery > .text-link { gap: 6px; }
.more-experiments { display: flex; justify-content: space-between; gap: 35px; align-items: center; margin-top: 34px; }
.more-experiments h3 { font-size: 19px; margin-bottom: 5px; }
.more-experiments p { font-size: 14px; color: var(--muted); }
.more-experiments .actions { flex-shrink: 0; gap: 25px; }
.approach-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 40px; }
.approach-item { border-top: 1px solid var(--line-strong); padding-top: 26px; }
.approach-item h3 { min-height: 90px; font-size: 26px; }
.approach-item:last-child .prose p:nth-child(n+3):nth-child(-n+8) { display: inline; }
.approach-item:last-child .prose p:nth-child(n+3):nth-child(-n+8)::after { content: ' '; }
.approach-item:last-child .prose p:last-child { margin-top: 15px; }
.principles-section { padding-top: 0; }
.compact-heading h2 { font-size: 32px; margin-bottom: 15px; }
.compact-heading > p { color: var(--muted); }
.principles-path { list-style: none; padding: 0; display: grid; grid-template-columns: repeat(5,1fr); margin: 40px 0 0; }
.principles-path li { position: relative; border-top: 1px solid var(--line-strong); padding: 30px 22px 0 0; }
.principles-path li::before { content: ''; position: absolute; top: -4px; left: 0; width: 7px; height: 7px; border-radius: 50%; background: var(--accent); }
.principles-path h3 { font-size: 18px; margin-bottom: 10px; }
.principles-path p { font-size: 14px; color: var(--muted); }
.multiply-section { text-align: center; background: var(--surface-2); border-block: 1px solid var(--line); }
.multiply-section h2 { max-width: 850px; margin-inline: auto; }
.potential-examples { list-style: none; padding: 0; margin: 50px auto; max-width: 920px; display: grid; grid-template-columns: repeat(3,1fr); gap: 25px 40px; }
.potential-examples li { font-size: 15px; line-height: 1.65; color: var(--muted); }
.multiply-close { max-width: 730px; margin: auto; font-size: 15px; }
.multiply-close > p { margin-bottom: 8px; }
.multiply-close blockquote { font-size: 24px; line-height: 1.5; letter-spacing: -.02em; margin: 18px 0; }
.people-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 32px; }
.person { border-top: 1px solid var(--line); padding-top: 24px; }
.person > img { width: 100%; max-width: 360px; aspect-ratio: 1; object-fit: cover; border-radius: 12px; margin-bottom: 25px; }
.person h3 { margin-bottom: 8px; }
.person-role { color: var(--accent); font-size: 14px; font-weight: 600; min-height: 46px; }
.person-description { color: var(--muted); font-size: 15px; }
.person-description p { margin-bottom: 12px; }
.banyan-note { display: flex; align-items: center; gap: 35px; max-width: 800px; margin: 65px auto 0; padding-top: 35px; border-top: 1px solid var(--line); }
.banyan-note img { flex-shrink: 0; opacity: .7; }
.banyan-note h3 { font-size: 20px; margin-bottom: 12px; }
.banyan-note p { display: inline; font-size: 15px; color: var(--muted); }
.banyan-note p::after { content: ' '; }
[data-theme="dark"] .banyan-monochrome { filter: invert(1); }
.future-section { background: var(--surface); border-block: 1px solid var(--line); }
.future-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 100px; }
.future-copy { color: var(--muted); font-size: 16px; }
.future-copy p { margin-bottom: 12px; }
.future-copy strong { color: var(--text); }
.contact-layout { display: grid; grid-template-columns: 1.1fr .9fr; gap: 90px; }
.contact-copy { color: var(--muted); margin-top: 28px; font-size: 16px; }
.contact-email { font-size: 14px; color: var(--accent); margin-top: 30px; }
.contact-form { padding: 30px; border: 1px solid var(--line); border-radius: 18px; background: var(--surface); }
.contact-form h3 { margin-bottom: 25px; }
.field { margin-bottom: 18px; }
label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 7px; }
.optional { font-weight: 400; color: var(--muted); }
input, textarea, select { width: 100%; min-height: 48px; padding: 10px 12px; border: 1px solid var(--line-strong); border-radius: 7px; color: var(--text); background: var(--bg); font-size: 16px; }
textarea { resize: vertical; display: block; }
.contact-form .button { width: 100%; }
.newsletter-section { padding-block: 58px; background: var(--surface-2); border-block: 1px solid var(--line); }
.newsletter-layout { display: grid; grid-template-columns: 1.1fr .9fr; gap: 90px; align-items: center; }
.newsletter-layout h2 { font-size: 32px; margin-bottom: 16px; }
.newsletter-layout p { font-size: 15px; color: var(--muted); }
.newsletter-note p { display: inline; font-size: 12px; }
.newsletter-note p::after { content: ' '; }
.subscribe-row { display: flex; gap: 10px; }
.subscribe-row input { min-width: 0; }
.subscribe-row .button { flex-shrink: 0; }
.site-footer { padding: 60px 0 25px; }
.footer-top { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 70px; padding-bottom: 45px; }
.footer-description { max-width: 350px; font-size: 14px; color: var(--muted); margin-top: 20px; }
.footer-description em { font-style: normal; }
.site-footer nav { display: flex; flex-direction: column; align-items: flex-start; }
.site-footer nav a { min-height: 44px; display: flex; align-items: center; font-size: 14px; text-decoration: none; gap: 10px; }
.site-footer nav a:hover { text-decoration: underline; }
.footer-bottom { border-top: 1px solid var(--line); padding-top: 20px; display: flex; gap: 25px; align-items: baseline; color: var(--muted); font-size: 12px; }
.footer-bottom p { margin: 0; }
.footer-small { margin-left: auto; display: flex; align-items: baseline; gap: 20px; }
.footer-small > a { padding-block: 12px; }
.footer-small summary { color: var(--muted); font-weight: 400; }
.registration { max-width: 280px; padding: 15px; border: 1px solid var(--line); border-radius: 7px; }
.registration p { margin-bottom: 8px; }
@media (min-width: 821px) {
  .section-heading, .future-layout { align-items: start; }
  /* Align narrative copy with the heading below its eyebrow. */
  .section-heading > .section-intro, .future-layout > .future-copy { padding-top: 44px; }
}
@media (max-width: 1100px) {
  #primary-nav { gap: 13px; }
  .header-inner { gap: 14px; }
  .section-heading, .contact-layout, .newsletter-layout, .future-layout { gap: 45px; }
  .idea-rail { grid-auto-columns: 35%; }
  .idea-card { padding: 22px; }
  .evidence-copy { padding: 30px; }
  .evidence-visual { padding: 28px; }
  .approach-grid { gap: 26px; }
}
@media (max-width: 820px) {
  html { scroll-padding-top: 90px; }
  .wrap { width: calc(100% - 40px); }
  .header-inner { flex-wrap: wrap; padding-block: 12px; min-height: 74px; }
  .site-header:not(.nav-enhanced) { position: static; }
  .brand { font-size: 21px; }
  .brand img { width: 36px; height: 38px; }
  .header-controls { order: 0; }
  #primary-nav { width: 100%; display: flex; flex-wrap: wrap; margin: 0; gap: 8px 20px; padding: 10px 0; }
  .nav-enhanced .menu-toggle { display: inline-flex; }
  .nav-enhanced #primary-nav { display: none; }
  .nav-enhanced #primary-nav.is-open { display: flex; }
  .hero-inner { min-height: 0; padding-top: 67px; padding-bottom: 45px; }
  .hero h1 { max-width: 650px; }
  .hero-lede { font-size: 20px; }
  .hero .root-motif { right: -220px; opacity: .22; }
  .hero-note { margin-top: 40px; }
  .section { padding-block: 72px; }
  .section-heading { grid-template-columns: 1fr; gap: 25px; margin-bottom: 30px; }
  .section-intro { max-width: 600px; }
  .idea-rail { grid-auto-columns: 44%; }
  .systems-strip { grid-template-columns: 1fr; padding: 30px; }
  .systems-strip > div { max-width: 560px; }
  .systems-strip .root-motif { opacity: .2; }
  .evidence-card, .evidence-card:nth-child(even) { grid-template-columns: 1fr; }
  .evidence-card .evidence-visual, .evidence-card:nth-child(even) .evidence-visual { order: 0; border: 0; border-bottom: 1px solid var(--line); }
  .evidence-visual svg { max-width: 300px; }
  .more-experiments { align-items: flex-start; flex-direction: column; gap: 15px; }
  .approach-grid { grid-template-columns: 1fr; gap: 36px; }
  .approach-item h3 { min-height: 0; }
  .principles-section { padding-top: 0; }
  .principles-path { grid-template-columns: 1fr; }
  .principles-path li { border-top: 0; border-left: 1px solid var(--line-strong); padding: 0 0 26px 27px; }
  .principles-path li:last-child { padding-bottom: 0; }
  .principles-path li::before { left: -4px; top: 7px; }
  .potential-examples { grid-template-columns: repeat(2,1fr); gap: 25px; }
  .people-grid { gap: 20px; }
  .person h3 { font-size: 21px; }
  .person-role { min-height: 70px; }
  .contact-layout, .newsletter-layout, .future-layout { grid-template-columns: 1fr; gap: 35px; }
  .footer-top { gap: 35px; }
  .footer-bottom { flex-wrap: wrap; gap: 10px 20px; }
  .footer-small { margin-left: 0; width: 100%; }
}
@media (max-width: 540px) {
  body { font-size: 16px; }
  h1 { font-size: clamp(43px, 11.5vw, 60px); }
  h2 { font-size: 34px; }
  .hero-inner { padding-top: 48px; }
  .hero .eyebrow { font-size: 10px; max-width: 310px; }
  .hero h1 { margin-bottom: 24px; }
  .hero-lede { font-size: 18px; }
  .hero-support { font-size: 14px; }
  .hero .actions { flex-direction: column; align-items: stretch; gap: 12px; }
  .hero .button { justify-content: space-between; }
  .hero .root-motif { right: -315px; bottom: -175px; }
  .eyebrow { font-size: 10px; margin-bottom: 16px; }
  .idea-rail { grid-auto-columns: 86%; gap: 16px; margin-right: -20px; padding-right: 20px; scroll-padding-inline: 2px; }
  .idea-card { min-height: 455px; padding: 23px; }
  .idea-card h3 { font-size: 25px; }
  .systems-strip { padding: 26px; }
  .systems-strip h2 { font-size: 29px; }
  .systems-strip summary { font-size: 14px; }
  .evidence-copy { padding: 26px; }
  .evidence-copy h3 { font-size: 26px; }
  .evidence-visual { padding: 26px; }
  .evidence-visual figcaption { font-size: 11px; }
  .potential-examples { grid-template-columns: 1fr; margin-block: 35px; gap: 20px; }
  .potential-examples li { padding-inline: 15px; }
  .multiply-close blockquote { font-size: 22px; }
  .people-grid { grid-template-columns: 1fr; gap: 38px; }
  .person > img { max-width: none; }
  .person-role { min-height: 0; }
  .banyan-note { gap: 22px; align-items: flex-start; margin-top: 45px; }
  .banyan-note img { width: 64px; height: auto; }
  .contact-form { padding: 24px; }
  .subscribe-row { flex-direction: column; }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 30px; }
  .footer-top > div { grid-column: 1/-1; }
}
@media (max-width: 360px) {
  .header-inner, .header-controls { gap: 8px; }
  .site-header .brand { font-size: 18px; gap: 7px; }
  .site-header .brand img { width: 30px; height: 32px; }
  .menu-toggle { padding-inline: 8px; gap: 6px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; animation: none !important; transition: none !important; }
}