/* Social emergence: observed stories lead into the Social Scaling bet. */
.index-page {
  --home-paper: #fbfbfd;
  --home-ink: #242527;
  --home-muted: #62646b;
  --home-line: #d3d5db;
  --home-soft: #eff0f3;
  --home-header: 65px;
  --home-path: 65px;
  --home-offset: calc(var(--home-header) + var(--home-path) + 20px);
  --home-inset: 142px;
  background: var(--home-paper);
  color: var(--home-ink);
}

.index-page .home-main {
  width: 100%;
  max-width: none;
  margin: 0;
  padding: 0;
  overflow: visible;
}

.index-page .home-wrap {
  width: min(1120px, calc(100% - 64px));
  margin-inline: auto;
}

.index-page .site-header { background: var(--home-paper); }
.index-page .header-inner {
  width: min(1120px, calc(100% - 64px));
  max-width: none;
  padding-inline: 0;
}

.index-page a:focus-visible,
.index-page summary:focus-visible {
  outline: 2px solid var(--home-ink);
  outline-offset: 4px;
}

.index-page .home-main h1,
.index-page .home-main h2,
.index-page .home-main h3 { text-wrap: balance; }
.index-page .title-phrase { display: inline-block; max-width: 100%; }
.index-page #main { scroll-margin-top: calc(var(--home-header) + 12px); }
.index-page #catalog,
.index-page .home-chapter[id],
.index-page .home-case[id],
.index-page .home-thesis[id],
.index-page .home-about[id] { scroll-margin-top: var(--home-offset); }
.index-page .home-legacy-anchor { display: block; height: 0; scroll-margin-top: var(--home-offset); }

.index-page .home-hero { padding: 52px 0 30px; }
.index-page .home-eyebrow {
  margin: 0 0 20px;
  font-size: 12px;
  line-height: 1.7;
  letter-spacing: .03em;
  color: var(--home-muted);
}
.index-page .home-hero h1 {
  max-width: 1000px;
  font-size: clamp(34px, 4.6vw, 52px);
  font-weight: 680;
  line-height: 1.28;
  letter-spacing: -.045em;
}
.index-page .home-bet {
  max-width: 870px;
  margin: 22px 0 0;
  color: #51535a;
  font-size: 19px;
  line-height: 1.85;
}
.index-page .home-opening { max-width: 870px; margin-top: 24px; }
.index-page .home-opening p { font-size: 18px; line-height: 1.9; color: #51535a; }
.index-page .home-opening p + p { margin-top: 18px; }
.index-page .home-opening .home-intro { font-size: 20px; color: var(--home-ink); }
.index-page .home-context { max-width: 870px; margin-top: 26px; padding-top: 23px; border-top: 1px solid var(--home-line); font-size: 18px; line-height: 1.9; }
.index-page .home-thesis { padding: 36px 0 42px; margin-bottom: 48px; border-block: 1px solid var(--home-line); scroll-margin-top: var(--home-offset); }
.index-page .home-thesis > h2 { max-width: 900px; font-size: 34px; line-height: 1.45; letter-spacing: -.025em; }
.index-page .thesis-closing { max-width: 870px; margin-top: 22px; font-size: 18px; line-height: 1.9; }

/* Two sources of growth share one frame; the outcome is the focal point. */
.index-page .scaling-frame {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.35fr);
  gap: 34px;
  margin-top: 30px;
  padding: 26px 30px;
  background: var(--home-soft);
  border-block: 1px solid var(--home-line);
}
.index-page .scaling-inputs { display: grid; align-content: center; gap: 18px; }
.index-page .scaling-dimension + .scaling-dimension {
  border-top: 1px solid var(--home-line);
  padding-top: 17px;
}
.index-page .scaling-dimension h2 {
  font-size: 18px;
  font-weight: 650;
  line-height: 1.5;
  letter-spacing: -.015em;
}
.index-page .scaling-dimension p {
  margin: 6px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: #55575f;
}
.index-page .scaling-outcome {
  padding-left: 34px;
  border-left: 1px solid #c5c7cf;
  align-self: stretch;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.index-page .scaling-overline {
  display: block;
  margin-bottom: 10px;
  color: var(--home-muted);
  font-size: 12px;
  line-height: 1.7;
}
.index-page .scaling-outcome h2 {
  font-size: 27px;
  line-height: 1.45;
  font-weight: 650;
  letter-spacing: -.025em;
}
.index-page .scaling-outcome > p:not(.scaling-metric) {
  margin: 12px 0 0;
  color: #55575f;
  font-size: 15px;
  line-height: 1.85;
}
.index-page .scaling-metric {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 12px;
  padding-top: 13px;
  margin: 17px 0 0;
  border-top: 1px solid var(--home-line);
  line-height: 1.8;
}
.index-page .scaling-metric > span { font-size: 11px; color: var(--home-muted); }
.index-page .scaling-metric strong { font-size: 14px; font-weight: 600; }
.index-page .home-register {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 24px;
  margin-top: 24px;
  color: var(--home-muted);
  font-size: 12px;
  line-height: 1.8;
}
.index-page .home-register span + span {
  padding-left: 24px;
  border-left: 1px solid var(--home-line);
}

.index-page .home-path {
  position: sticky;
  top: var(--home-header);
  z-index: 90;
  min-height: 65px;
  background: var(--home-paper);
  border-block: 1px solid var(--home-line);
}
.index-page .path-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 18px;
  min-height: 63px;
}
.index-page .path-label {
  font-size: 12px;
  line-height: 1.6;
  color: var(--home-muted);
  white-space: nowrap;
}
.index-page .path-links {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  align-items: stretch;
  gap: 6px;
  width: min(680px, 100%);
  padding-block: 8px;
}
.index-page .path-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  min-height: 46px;
  padding: 6px 8px;
  color: var(--home-muted);
  transition: background-color 160ms ease, color 160ms ease;
}
.index-page .path-links a > span,
.index-page .case-id,
.index-page .chapter-number b {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
}
.index-page .path-links a > span { font-size: 11px; line-height: 1.4; }
.index-page .path-links a > strong { font-size: 14px; font-weight: 550; line-height: 1.5; }
.index-page .path-links a:hover { text-decoration: none; box-shadow: inset 0 0 0 1px var(--home-ink); }
.index-page .path-links a[aria-current="location"] { background: var(--home-ink); color: var(--home-paper); }
.index-page .path-links a:focus-visible { outline-offset: 2px; }

.index-page .home-archive { padding-top: 24px; }
.index-page .catalog-intro { max-width: 880px; margin: 0 0 10px; font-size: 17px; line-height: 1.85; }
.index-page .coordinate-note {
  margin: 0 0 24px;
  color: var(--home-muted);
  font-size: 12px;
  line-height: 1.85;
}
.index-page .home-chapter { margin: 0 0 64px; }
.index-page .chapter-intro {
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr);
  gap: 28px;
  padding: 32px 38px;
  background: var(--home-soft);
  border-block: 1px solid var(--home-line);
}
.index-page .chapter-number > span {
  display: block;
  margin: 3px 0 10px;
  color: var(--home-muted);
  font-size: 11px;
  line-height: 1.6;
}
.index-page .chapter-number b { font-size: 31px; line-height: 1; font-weight: 400; letter-spacing: -.06em; }
.index-page .chapter-copy { min-width: 0; }
.index-page .chapter-coordinate { display: flex; flex-wrap: wrap; gap: 6px 24px; margin: 0 0 14px; color: var(--home-muted); font-size: 15px; line-height: 1.8; }
.index-page .chapter-coordinate > span:first-child { font-family: var(--mono); color: var(--home-ink); }
.index-page .chapter-coordinate strong { margin-left: 7px; color: var(--home-ink); font-weight: 650; font-variant-numeric: tabular-nums; }
.index-page .chapter-label {
  margin: 0 0 9px;
  color: var(--home-muted);
  font-size: 12px;
  line-height: 1.7;
}
.index-page .chapter-copy h2 { font-size: 29px; line-height: 1.4; letter-spacing: -.025em; font-weight: 650; }
.index-page .chapter-lead { max-width: 790px; margin: 16px 0 0; font-size: 18px; line-height: 1.9; }
.index-page .case-list { padding-left: var(--home-inset); }
.index-page .home-case { border-bottom: 1px solid var(--home-line); }
.index-page .case-row.catalog-row {
  display: grid;
  grid-template-columns: 55px minmax(0, 1fr) 100px;
  gap: 18px;
  align-items: center;
  min-height: 118px;
  margin: 0;
  padding: 16px 0 26px;
  border: 0;
  transition: background-color 160ms ease;
}
.index-page .case-row:hover { background: #f2f3f6; text-decoration: none; }
.index-page .case-row:focus-visible { outline-offset: 0; }
.index-page .case-id { align-self: start; padding-top: 4px; color: var(--home-muted); font-size: 12px; line-height: 1.8; }
.index-page .case-copy { min-width: 0; }
.index-page .case-copy h3 { font-size: 23px; line-height: 1.4; font-weight: 630; letter-spacing: -.02em; }
.index-page .case-copy p { max-width: 680px; margin: 8px 0 0; color: #5c5e65; font-size: 16px; line-height: 1.8; }
.index-page .case-action {
  padding-right: 4px;
  font-size: 13px;
  line-height: 1.8;
  text-align: right;
  text-decoration: underline;
  text-underline-offset: 5px;
  white-space: nowrap;
}
.index-page .case-action > span { margin-left: 6px; }

/* A second, independent link locates the event; it is never nested in the case link. */
.index-page .case-milestone {
  display: grid;
  grid-template-columns: 55px minmax(180px, auto) minmax(0, 1fr) 78px;
  gap: 5px 12px;
  align-items: baseline;
  min-height: 48px;
  margin: 22px 0 0;
  padding: 10px 0;
  color: #5c5e65;
  font-size: 12px;
  line-height: 1.85;
  transition: background-color 160ms ease;
}
.index-page .case-milestone:hover { background: #f2f3f6; text-decoration: none; }
.index-page .milestone-label { grid-column: 1; grid-row: 1; color: var(--home-muted); font-size: 11px; }
.index-page .case-milestone time { grid-column: 1; grid-row: 1; color: var(--home-ink); font: 15px/1.85 var(--mono); }
.index-page .milestone-dau { grid-column: 2; grid-row: 1; color: var(--home-muted); font-size: 13px; }
.index-page .milestone-dau strong { color: var(--home-ink); font-size: 16px; font-weight: 650; font-variant-numeric: tabular-nums; }
.index-page .milestone-event { grid-column: 3; grid-row: 1; min-width: 0; overflow-wrap: anywhere; }
.index-page .milestone-link { grid-column: 4; grid-row: 1; white-space: nowrap; text-align: right; font-size: 11px; text-decoration: underline; text-underline-offset: 4px; }
.index-page .milestone-timezone { grid-column: 2 / 4; grid-row: 2; color: var(--home-muted); font-size: 11px; }

.index-page .connection-note {
  display: grid;
  grid-template-columns: 66px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  margin: 22px 0 0 var(--home-inset);
  padding: 16px 20px;
  background: var(--home-soft);
}
.index-page .connection-note strong { padding-top: 4px; font-size: 12px; font-weight: 600; line-height: 1.8; }
.index-page .connection-note p { margin: 0; color: #55575f; font-size: 14px; line-height: 1.85; }
.index-page .relation-figure { margin: 28px 0 4px var(--home-inset); }
.index-page .case-list > .relation-figure { margin-left: 0; margin-bottom: 14px; }
.index-page .relation-figure figcaption { margin-bottom: 12px; color: var(--home-muted); font-size: 13px; line-height: 1.8; }
.index-page .relation-map { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); gap: 26px; max-width: 780px; }
.index-page .relation-origins { display: grid; }
.index-page .relation-origins a { display: grid; grid-template-columns: 44px minmax(0, 1fr) 26px; gap: 12px; padding: 12px 0; align-items: center; min-height: 64px; }
.index-page .relation-origins a + a { border-top: 1px solid var(--home-line); }
.index-page .relation-origins a:hover { background: var(--home-soft); text-decoration: none; }
.index-page .relation-origins strong { font-size: 16px; font-weight: 620; line-height: 1.7; }
.index-page .relation-origins small { display: block; margin-top: 5px; color: var(--home-muted); font-size: 13px; line-height: 1.7; }
.index-page .relation-arrow { color: var(--home-muted); font-size: 22px; }
.index-page .relation-destination { display: flex; flex-direction: column; justify-content: center; gap: 8px; padding: 20px 24px; background: var(--home-soft); min-width: 0; }
.index-page .relation-destination strong { font-size: 20px; font-weight: 620; line-height: 1.5; }
.index-page .relation-destination > span:last-child { color: #55575f; font-size: 14px; line-height: 1.8; }

.index-page .home-about { padding: 0 0 52px var(--home-inset); }
.index-page .home-about h2 { margin: 0 0 14px; font-size: 23px; line-height: 1.5; }
.index-page .home-reading-brief { max-width: 790px; color: #55575f; font-size: 16px; line-height: 1.9; }
.index-page .source-scope { margin-top: 22px; border-block: 1px solid var(--home-line); }
.index-page .source-scope > summary { min-height: 48px; padding: 13px 2px; color: var(--home-muted); font-size: 13px; line-height: 1.8; }
.index-page .source-scope > div { padding: 2px 0 20px; }
.index-page .source-scope p { max-width: 790px; color: #55575f; font-size: 14px; line-height: 1.85; }
.index-page .source-scope p + p { margin-top: 12px; }
.index-page .footer { width: min(1120px, calc(100% - 64px)); max-width: none; padding: 22px 0 30px; }

@media (max-width: 1000px) {
  .index-page { --home-inset: 102px; }
  .index-page .path-label { display: none; }
  .index-page .path-links { width: 100%; }
  .index-page .scaling-frame { gap: 24px; padding: 24px; }
  .index-page .scaling-outcome { padding-left: 24px; }
  .index-page .chapter-intro { grid-template-columns: 52px minmax(0, 1fr); gap: 22px; padding: 28px; }
  .index-page .case-row.catalog-row { grid-template-columns: 44px minmax(0, 1fr); gap: 10px 12px; }
  .index-page .case-action { grid-column: 2; text-align: left; }
  .index-page .case-copy h3 { font-size: 22px; }
  .index-page .case-milestone { display: flex; flex-wrap: wrap; column-gap: 12px; row-gap: 5px; padding-block: 12px; }
  .index-page .milestone-label { order: 0; }
  .index-page .case-milestone time { order: 1; }
  .index-page .milestone-dau { order: 2; }
  .index-page .milestone-timezone { order: 4; }
  .index-page .milestone-event { order: 3; flex-basis: 100%; font-size: 13px; }
  .index-page .milestone-link { order: 5; margin-left: auto; }
}

@media (max-width: 680px) {
  .index-page .scaling-frame { display: block; padding: 22px; }
  .index-page .scaling-inputs { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
  .index-page .scaling-dimension + .scaling-dimension { border-top: 0; border-left: 1px solid var(--home-line); padding-top: 0; padding-left: 20px; }
  .index-page .scaling-outcome { margin-top: 20px; padding: 20px 0 0; border-left: 0; border-top: 1px solid #c5c7cf; }
  .index-page .scaling-outcome h2 { font-size: 25px; }
  .index-page .home-register { gap: 5px 16px; }
  .index-page .home-register span + span { padding-left: 16px; }
  .index-page .case-list { padding-left: 0; }
  .index-page .connection-note, .index-page .relation-figure { margin-left: 0; }
  .index-page .home-about { padding-left: 0; }
}

@media (max-width: 580px) {
  .index-page { --home-header: 58px; --home-path: 64px; --home-inset: 0px; }
  .index-page .home-wrap, .index-page .header-inner, .index-page .footer { width: calc(100% - 36px); }
  .index-page .home-hero { padding: 36px 0 26px; }
  .index-page .home-eyebrow { margin-bottom: 18px; font-size: 11px; }
  .index-page .home-hero h1 { font-size: 35px; line-height: 1.35; letter-spacing: -.035em; }
  .index-page .home-bet { margin-top: 20px; font-size: 17px; line-height: 1.9; }
  .index-page .home-opening { margin-top: 20px; }
  .index-page .home-opening p, .index-page .home-opening .home-intro, .index-page .home-context, .index-page .thesis-closing { font-size: 17px; line-height: 1.9; }
  .index-page .home-context { margin-top: 22px; padding-top: 20px; }
  .index-page .home-thesis { padding-block: 28px; margin-bottom: 32px; }
  .index-page .home-thesis > h2 { font-size: 27px; }
  .index-page .scaling-frame { margin-top: 24px; padding: 18px; }
  .index-page .scaling-inputs { gap: 16px; }
  .index-page .scaling-dimension + .scaling-dimension { padding-left: 16px; }
  .index-page .scaling-dimension h2 { font-size: 17px; line-height: 1.65; }
  .index-page .scaling-dimension p { font-size: 14px; line-height: 1.85; }
  .index-page .scaling-outcome { margin-top: 18px; padding-top: 18px; }
  .index-page .scaling-overline { margin-bottom: 8px; font-size: 11px; }
  .index-page .scaling-outcome h2 { font-size: 23px; line-height: 1.5; }
  .index-page .scaling-outcome > p:not(.scaling-metric) { margin-top: 10px; font-size: 14px; }
  .index-page .scaling-metric { display: block; margin-top: 14px; padding-top: 12px; }
  .index-page .scaling-metric > span { display: block; margin-bottom: 3px; }
  .index-page .scaling-metric strong { display: block; font-size: 14px; line-height: 1.85; }
  .index-page .home-register { gap: 4px 12px; margin-top: 20px; font-size: 11px; }
  .index-page .home-register span + span { padding-left: 12px; }
  .index-page .home-register span:last-child { flex-basis: 100%; padding-left: 0; border-left: 0; }
  .index-page .home-path { min-height: 64px; }
  .index-page .path-inner { min-height: 62px; }
  .index-page .path-links { gap: 4px; padding-block: 7px; }
  .index-page .path-links a { flex-direction: column; gap: 3px; min-height: 48px; padding: 5px 3px; }
  .index-page .path-links a > span { font-size: 10px; line-height: 1; }
  .index-page .path-links a > strong { font-size: 12px; line-height: 1.5; }
  .index-page .home-archive { padding-top: 20px; }
  .index-page .coordinate-note { margin-bottom: 20px; font-size: 11px; }
  .index-page .home-chapter { margin-bottom: 42px; }
  .index-page .chapter-intro { grid-template-columns: minmax(0, 1fr); gap: 14px; padding: 22px 18px; }
  .index-page .chapter-number { display: flex; align-items: baseline; gap: 9px; }
  .index-page .chapter-number > span { margin: 0; font-size: 10px; }
  .index-page .chapter-number b { font-size: 20px; }
  .index-page .chapter-label { margin-bottom: 7px; font-size: 11px; }
  .index-page .chapter-copy h2 { font-size: 27px; line-height: 1.5; }
  .index-page .chapter-coordinate { flex-direction: column; gap: 3px; font-size: 14px; margin-bottom: 12px; }
  .index-page .chapter-lead { margin-top: 14px; font-size: 17px; line-height: 1.9; }
  .index-page .case-row.catalog-row { grid-template-columns: 38px minmax(0, 1fr); gap: 9px 10px; min-height: 140px; padding: 12px 4px 24px 2px; }
  .index-page .case-copy h3 { font-size: 21px; }
  .index-page .case-copy p { margin-top: 6px; font-size: 16px; line-height: 1.85; }
  .index-page .case-action { margin-top: 2px; font-size: 13px; }
  .index-page .case-id { font-size: 11px; }
  .index-page .case-milestone { margin: 18px 4px 0 2px; padding: 12px 0 8px; gap: 6px 14px; }
  .index-page .milestone-dau { font-size: 12px; }
  .index-page .milestone-event { font-size: 13px; line-height: 1.85; }
  .index-page .milestone-timezone { font-size: 10px; }
  .index-page .milestone-link { font-size: 11px; }
  .index-page .connection-note { grid-template-columns: minmax(0, 1fr); gap: 8px; margin-top: 18px; padding: 16px; }
  .index-page .connection-note strong { padding-top: 0; }
  .index-page .connection-note p { font-size: 14px; }
  .index-page .relation-figure { margin-top: 22px; }
  .index-page .relation-map { grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); gap: 12px; }
  .index-page .relation-origins a { grid-template-columns: minmax(0, 1fr) 18px; gap: 4px; padding: 13px 0; }
  .index-page .relation-origins a > .case-id { grid-column: 1; padding: 0; }
  .index-page .relation-origins a > span:nth-child(2) { grid-column: 1; }
  .index-page .relation-arrow { grid-column: 2; grid-row: 1 / span 2; align-self: center; font-size: 20px; }
  .index-page .relation-origins strong { font-size: 15px; }
  .index-page .relation-origins small { font-size: 12px; line-height: 1.6; }
  .index-page .relation-destination { padding: 16px 13px; }
  .index-page .relation-destination strong { font-size: 18px; }
  .index-page .relation-destination > span:last-child { font-size: 12px; line-height: 1.7; }
  .index-page .home-about { padding-bottom: 38px; }
  .index-page .home-about h2 { font-size: 21px; }
  .index-page .home-reading-brief { font-size: 15px; }
  .index-page .footer { flex-wrap: wrap; column-gap: 20px; row-gap: 2px; padding-block: 20px; font-size: 11px; }
}

@media (prefers-reduced-motion: reduce) {
  .index-page .path-links a,
  .index-page .case-row.catalog-row,
  .index-page .case-milestone { transition: none; }
}

@media (forced-colors: active) {
  .index-page .path-links a[aria-current="location"] { outline: 2px solid Highlight; outline-offset: -2px; }
}

@media print {
  .index-page .home-path { display: none; }
  .index-page .home-wrap { width: 100%; }
  .index-page .home-hero { padding-top: 0; }
  .index-page .home-chapter { margin-bottom: 28px; }
  .index-page .chapter-intro { break-after: avoid; }
  .index-page .home-case, .index-page .relation-figure { break-inside: avoid; }
  .index-page .case-list, .index-page .home-about { padding-left: 0; }
  .index-page .connection-note, .index-page .relation-figure { margin-left: 0; }
  .index-page .case-action, .index-page .milestone-link { display: none; }
}