.ai-page { color-scheme: dark; scrollbar-color: var(--ink-faint) var(--bg); }
.ai-page[data-mode="light"] { color-scheme: light; }
.ai-page a { color: inherit; text-underline-offset: .25em; }
.ai-page a:focus-visible, .ai-page button:focus-visible { outline: 2px solid var(--ink); outline-offset: 5px; }
.ai-header { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 20px 4vw; border-bottom: 1px solid var(--line); }
.ai-brand { display: flex; align-items: center; gap: 14px; text-decoration: none; font-weight: 600; }
.ai-header nav { display: flex; align-items: center; gap: 28px; }
.ai-header nav a, .ai-header button { font: 12px var(--mono); min-height: 44px; display: inline-flex; align-items: center; }
.ai-header button { background: none; color: var(--ink); border: 1px solid var(--line); padding: 0 14px; border-radius: 6px; cursor: pointer; }
.ai-main { max-width: 1360px; margin: 0 auto; padding: 0 4vw; }
.ai-intro { display: grid; grid-template-columns: 1.1fr 1fr; gap: 8%; align-items: end; padding: 64px 0 58px; }
.ai-eyebrow { font: 12px var(--mono); color: var(--ink-dim); margin: 0 0 24px; }
.ai-intro h1 { font: 600 clamp(48px, 6.3vw, 88px)/1 var(--display); letter-spacing: -.035em; margin: 0; text-wrap: balance; }
.ai-period { color: var(--accent); }
.ai-intro-note { max-width: 55ch; padding-bottom: 4px; }
.ai-intro-note p { color: var(--ink-dim); font-size: 16px; line-height: 1.6; text-wrap: pretty; }
.ai-intro-note .ai-lede { font-size: 23px; line-height: 1.3; color: var(--ink); margin: 0 0 18px; }
.ai-text-link { display: inline-flex; align-items: center; min-height: 44px; gap: 22px; font: 12px var(--mono); }
.ai-boundary { display: grid; grid-template-columns: 1fr 2.3fr; gap: 32px; padding: 32px; background: var(--panel); border: 1px solid var(--panel-border); border-radius: 10px; }
.ai-boundary h2 { font-size: 25px; line-height: 1.15; margin: 0 0 16px; letter-spacing: -.02em; }
.ai-boundary p { color: var(--ink-dim); font-size: 14px; line-height: 1.5; margin: 0; max-width: 60ch; }
.ai-flow { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.ai-flow li { border-top: 1px solid var(--ink-faint); padding-top: 14px; }
.ai-flow-label { display: block; font: 11px/1.5 var(--mono); color: var(--ink-dim); margin-bottom: 22px; }
.ai-flow strong { display: block; font-size: 17px; margin-bottom: 10px; }
.ai-evidence { padding-top: 48px; scroll-margin-top: 24px; }
.ai-section-head { display: flex; justify-content: space-between; align-items: baseline; flex-wrap: wrap; gap: 16px; margin-bottom: 18px; }
.ai-section-head h2, .ai-limits h2 { font-size: 30px; letter-spacing: -.025em; line-height: 1.15; margin: 0; text-wrap: balance; }
.ai-source-label { font: 11px var(--mono); color: var(--ink-dim); }
.ai-status { padding: 16px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.ai-status strong { font: 500 13px var(--mono); }
.ai-status p { color: var(--ink-dim); font-size: 14px; line-height: 1.5; margin: 8px 0 0; max-width: 80ch; }
.ai-status[data-state="current"] { display: flex; flex-wrap: wrap; gap: 8px 24px; align-items: baseline; }
.ai-status[data-state="current"] p { margin: 0; }
.ai-claim { display: grid; grid-template-columns: 1fr 1.6fr; column-gap: 8%; padding: 28px 0; border-bottom: 1px solid var(--line); }
.ai-claim h3 { font-size: 23px; letter-spacing: -.015em; line-height: 1.2; margin: 0 0 12px; text-wrap: balance; }
.ai-claim p { color: var(--ink-dim); font-size: 16px; line-height: 1.55; max-width: 70ch; margin: 0 0 16px; }
.ai-claim .ai-claim-kind { font: 11px/1.5 var(--mono); }
.ai-provenance { display: flex; flex-wrap: wrap; gap: 8px 24px; margin: 0; font: 11px/1.6 var(--mono); color: var(--ink-dim); }
.ai-provenance div { display: flex; gap: 8px; }
.ai-provenance dt { color: var(--ink); }
.ai-provenance dd { margin: 0; }
.ai-limits { display: grid; grid-template-columns: 1fr 1.6fr; gap: 8%; padding: 42px 0 48px; }
.ai-limits p { margin: 0 0 14px; color: var(--ink-dim); font-size: 15px; line-height: 1.6; max-width: 70ch; }
.ai-footer { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 12px 24px; padding: 18px 4vw; border-top: 1px solid var(--line); color: var(--ink-dim); font: 11px/1.5 var(--mono); }
.ai-footer a { display: inline-flex; align-items: center; min-height: 44px; }
.ai-skip { position: absolute; left: 12px; top: -80px; background: var(--panel); padding: 14px; z-index: 2; }
.ai-skip:focus { top: 12px; }
.ai-review-notice { margin: 0; padding: 12px 4vw; background: var(--panel); border-bottom: 1px solid var(--line); font: 12px/1.5 var(--mono); }
.ai-no-script { line-height: 1.5; color: var(--ink-dim); }
.ai-editorial { display: grid; grid-template-columns: 1fr 1.6fr; gap: 8%; padding: 52px 0; border-top: 1px solid var(--line); scroll-margin-top: 24px; }
.ai-editorial h2 { font-size: clamp(28px, 3vw, 40px); line-height: 1.12; letter-spacing: -.025em; margin: 0; max-width: 16ch; text-wrap: balance; }
.ai-prose { max-width: 65ch; }
.ai-prose h3 { font-size: 23px; line-height: 1.25; letter-spacing: -.015em; margin: 32px 0 12px; }
.ai-prose h3:first-child { margin-top: 0; }
.ai-prose p { color: var(--ink-dim); font-size: 17px; line-height: 1.7; margin: 0 0 16px; text-wrap: pretty; }
.ai-prose p:last-child { margin-bottom: 0; }
.ai-case { background: var(--panel); padding: 40px; border: 1px solid var(--panel-border); border-radius: 10px; margin-bottom: 52px; }
.ai-project-details summary { cursor: pointer; min-height: 44px; }
.ai-project-details summary:focus-visible { outline: 2px solid var(--ink); outline-offset: 8px; }
.ai-project-details summary .ai-eyebrow { display: inline-block; margin-bottom: 12px; }
.ai-project-details h2 { font-size: clamp(26px, 3vw, 36px); line-height: 1.2; margin: 0 0 14px; letter-spacing: -.025em; }
.ai-expand-hint, .ai-collapse-hint { font: 12px var(--mono); color: var(--ink-dim); }
.ai-collapse-hint, .ai-project-details[open] .ai-expand-hint { display: none; }
.ai-project-details[open] .ai-collapse-hint { display: inline; }
.ai-project-details .ai-prose { margin-top: 28px; }
.ai-case { scroll-margin-top: 24px; }
.ai-case .ai-case-lede { color: var(--ink); font-size: 20px; line-height: 1.55; }
.ai-account-note { border-top: 1px solid var(--line); padding: 22px 0 32px; margin: 0; color: var(--ink-dim); font: 12px/1.6 var(--mono); }
.ai-account-note p, .ai-evidence-details p { max-width: 80ch; color: var(--ink-dim); font-size: 14px; line-height: 1.65; }
.ai-evidence { padding-bottom: 44px; }
.ai-evidence-details { margin-top: 18px; }
.ai-evidence-details summary { cursor: pointer; width: fit-content; min-height: 44px; align-content: center; font-size: 14px; }
.ai-evidence-details summary:focus-visible { outline: 2px solid var(--ink); outline-offset: 5px; }
.ai-evidence-details a { display: inline-flex; align-items: center; min-height: 44px; font: 12px var(--mono); }
@media (max-width: 650px) {
  .ai-editorial { grid-template-columns: 1fr; gap: 26px; padding: 32px 0; }
  .ai-editorial h2 { max-width: 22ch; }
  .ai-prose p { font-size: 16px; line-height: 1.65; }
  .ai-case { padding: 24px 20px; margin-bottom: 32px; }
  .ai-case .ai-case-lede { font-size: 18px; }
}
@media (max-width: 980px) { .ai-boundary { grid-template-columns: 1fr; } .ai-boundary-intro { max-width: 60ch; } .ai-boundary h2 br { display: none; } }
@media (max-width: 650px) {
  .ai-header { padding: 12px 20px; gap: 12px; }
  .ai-brand { gap: 8px; }
  .ai-brand > span:last-child { display: none; }
  .ai-header nav { gap: 14px; }
  .ai-header nav a, .ai-header button { font-size: 11px; }
  .ai-header button { padding: 0 10px; }
  .ai-main { padding: 0 24px; }
  .ai-intro { grid-template-columns: 1fr; gap: 28px; padding: 40px 0 32px; }
  .ai-intro h1 { font-size: clamp(46px, 12vw, 70px); }
  .ai-eyebrow { font-size: 10px; margin-bottom: 20px; }
  .ai-intro-note .ai-lede { font-size: 21px; }
  .ai-boundary { padding: 24px; gap: 28px; }
  .ai-flow { grid-template-columns: 1fr; gap: 24px; }
  .ai-flow-label { margin-bottom: 10px; }
  .ai-evidence { padding-top: 36px; }
  .ai-section-head h2, .ai-limits h2 { font-size: 28px; }
  .ai-claim, .ai-limits { grid-template-columns: 1fr; gap: 14px; }
  .ai-claim { padding: 24px 0; }
  .ai-claim-kind { margin-bottom: 2px !important; }
  .ai-provenance { flex-direction: column; gap: 5px; }
  .ai-limits { padding: 32px 0 24px; }
  .ai-footer { padding: 20px 24px max(20px, env(safe-area-inset-bottom)); }
}
@media (prefers-reduced-motion: reduce) { .ai-page, .ai-page * { transition: none; scroll-behavior: auto; } }