/* site.css — the shared stylesheet for the hand-authored pages: the home page
   (index.html) and the eleven about pages beside it. Every generated demo page
   keeps its own look; this file is not loaded by any of them.

   The palette is a quiet near-monochrome one: a white ground, a neutral grey
   scale, and a single restrained green accent reserved for grounding and
   provenance cues. It deliberately does NOT mirror src/services/viz-theme.mjs;
   those trust-tier tokens stay the shared source of truth for the
   ledger/plan/chat/sprite pages. --code-bg/--code-fg are these pages own
   terminal-block colours. */
:root {
  --font-display: ui-rounded, "SF Pro Rounded", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-body: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
  --bg: #FFFFFF;
  --ink: #1A1A1A;
  --muted: #6F6F76;
  --taught: #1B7A4B;
  --entail: #3F3F46;
  --entail-soft: rgba(63, 63, 70, 0.10);
  --card: #FAFAF9;
  --line: #E6E6E1;
  --code-bg: #18181B;
  --code-fg: #E4E4E7;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0B0B0C;
    --ink: #F3F3F2;
    --muted: #9A9AA1;
    --taught: #4FB27C;
    --entail: #A1A1AA;
    --entail-soft: rgba(161, 161, 170, 0.12);
    --card: #17171A;
    --line: #2A2A2E;
    --code-bg: #101012;
    --code-fg: #D4D4D8;
  }
}
:root[data-theme="dark"] {
  --bg: #0B0B0C; --ink: #F3F3F2; --muted: #9A9AA1; --taught: #4FB27C;
  --entail: #A1A1AA; --entail-soft: rgba(161, 161, 170, 0.12);
  --card: #17171A; --line: #2A2A2E; --code-bg: #101012; --code-fg: #D4D4D8;
}
:root[data-theme="light"] {
  --bg: #FFFFFF; --ink: #1A1A1A; --muted: #6F6F76; --taught: #1B7A4B;
  --entail: #3F3F46; --entail-soft: rgba(63, 63, 70, 0.10);
  --card: #FAFAF9; --line: #E6E6E1; --code-bg: #18181B; --code-fg: #E4E4E7;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  background: var(--bg);
  color: var(--ink);
  font: 16.5px/1.65 var(--font-body);
  -webkit-font-smoothing: antialiased;
  padding: clamp(2.75rem, 6vw, 4.5rem) 1.25rem 5rem;
}
main { max-width: 62rem; margin: 0 auto; }
.copy { max-width: 44rem; margin-left: auto; margin-right: auto; }
h1, h2, h3 { font-family: var(--font-display); font-weight: 600; letter-spacing: -0.01em; }
h2 {
  font-size: 1.3rem;
  margin: 2.6rem 0 0.7rem;
  border-bottom: 1px solid var(--line);
  padding-bottom: 0.35rem;
}
p { margin: 0.7rem 0; }
em { color: var(--taught); font-style: normal; font-weight: 600; }
a { color: var(--taught); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }
a:focus-visible { outline: 2px solid var(--taught); outline-offset: 2px; border-radius: 2px; }
pre {
  background: var(--code-bg);
  color: var(--code-fg);
  font: 13.5px/1.6 var(--font-mono);
  padding: 1rem 1.2rem;
  border-radius: 12px;
  overflow-x: auto;
  margin: 0.9rem 0;
}
code {
  font: 0.88em var(--font-mono);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 0.05em 0.32em;
  overflow-wrap: break-word;
}
pre code { background: none; border: none; padding: 0; }
.eyebrow {
  font: 600 0.72rem/1.5 var(--font-mono);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 0.7rem;
}
footer {
  margin-top: 3.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  font-size: 0.9rem;
  color: var(--muted);
}

/* ---- hero ------------------------------------------------------------------------ */
.hero { text-align: center; max-width: 48rem; margin: 0 auto 4rem; }
.hero h1 {
  font-size: clamp(2.15rem, 5.5vw, 3rem);
  font-weight: 600;
  line-height: 1.08;
  letter-spacing: -0.025em;
}
.hero h1 .long {
  display: block; font-family: var(--font-body); font-size: 1.05rem;
  font-weight: 400; color: var(--muted);
  margin-top: 0.6rem; font-style: normal; line-height: 1.5; letter-spacing: 0;
}
.lede {
  font-size: 1.15rem; color: var(--muted);
  margin: 1.2rem auto 0; max-width: 36rem;
}
.hero-install {
  display: inline-block;
  margin-top: 1.6rem;
  background: var(--card);
  color: var(--ink);
  border: 1px solid var(--line);
  font: 0.85rem/1 var(--font-mono);
  padding: 0.8em 1.15em;
  border-radius: 10px;
  max-width: 100%;
  overflow-x: auto;
  white-space: nowrap;
}
.hero-install .ps1 { color: var(--muted); }

/* ---- demo grid (each card links to the page it demonstrates) --------------------- */
.band-head { text-align: center; max-width: 40rem; margin: 0 auto 1.75rem; }
.band-head h2 { border-bottom: none; padding-bottom: 0; margin: 0; font-size: 1.6rem; }
.demo-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(14.5rem, 1fr));
  gap: 1rem; margin: 0 0 1rem;
}
.claim {
  display: flex; flex-direction: column; gap: 0.5rem;
  background: var(--card); border: 1px solid var(--line); border-radius: 14px;
  padding: 1.15rem 1.2rem; text-decoration: none; color: inherit;
  transition: border-color 0.15s ease, background-color 0.15s ease;
}
.claim:hover, .claim:focus-visible {
  border-color: var(--entail);
}
.claim .claim-icon { height: 26px; color: var(--entail); }
.claim .claim-icon svg { width: 26px; height: 26px; }
.claim .claim-icon.dual svg { width: 22px; height: 22px; }
.claim h3 { font-size: 1.05rem; margin: 0; color: var(--ink); }
.claim p { margin: 0; font-size: 0.875rem; color: var(--muted); line-height: 1.5; }
.claim .demo-page {
  margin-top: auto; align-self: flex-start;
  font: 0.7rem/1 var(--font-mono);
  color: var(--muted); background: var(--bg);
  border: 1px solid var(--line); border-radius: 999px;
  padding: 0.32em 0.8em;
}
.claim:hover .demo-page, .claim:focus-visible .demo-page {
  color: var(--entail); border-color: var(--entail);
}

/* ---- new-tab cue: every demo-page link opens in a new tab -------------------------
   .newtab-icon is the inline glyph inside .demo-page/.open-link; .plate-frame's own
   override turns it into an absolutely-positioned corner badge, since that family has
   no inline text to hang the glyph on. */
.newtab-icon { display: inline-block; vertical-align: -0.15em; width: 0.85em; height: 0.85em; color: currentColor; }
.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;
}

/* ---- feature sections, each screenshot framed as a numbered plate ---------------- */
.feature {
  display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  gap: 1.6rem 3.5rem; align-items: center;
  margin: 4.2rem 0;
}
.feature.flip .plate { order: -1; }
.feature h2 { border-bottom: none; padding-bottom: 0; margin: 0.2rem 0 0; font-size: 1.5rem; }
.feature .feature-copy p { font-size: 1rem; color: var(--muted); }
.feature .open-link { font-size: 0.92rem; }
/* The plate frame and alt text keep a feature readable while its screenshot
   is still awaiting capture, so the section never shows a bare broken image. */
.plate { margin: 0; }
.plate .plate-frame {
  display: block;
  position: relative;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 0.6rem;
  outline: 1px solid var(--entail-soft);
  outline-offset: 4px;
}
/* .plate-frame has no inline text to hang the new-tab glyph on, so it becomes
   a pill badge in the frame's top-right corner instead, echoing .demo-page's
   own pill styling. */
.plate-frame .newtab-icon {
  position: absolute; top: 0.85rem; right: 0.85rem; width: 20px; height: 20px;
  background: var(--card); border: 1px solid var(--line); border-radius: 999px;
  padding: 5px; box-sizing: content-box; color: var(--entail);
}
.plate img {
  display: block; width: 100%; height: auto;
  aspect-ratio: 1024 / 600; object-fit: cover;
  border-radius: 8px;
  background: var(--bg); border: 1px solid var(--line);
  color: var(--muted); font: 12px/1.5 var(--font-mono);
}
.plate figcaption {
  margin-top: 0.65rem; text-align: center;
  font: 0.7rem/1.5 var(--font-mono);
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted);
}
.plate figcaption .plate-no { color: var(--entail); }
@media (max-width: 760px) {
  .feature { grid-template-columns: 1fr; gap: 1rem; margin: 3rem 0; }
  .feature.flip .plate { order: 0; }
}
@media (prefers-reduced-motion: reduce) {
  .claim, .showcase-card { transition: none; }
}

/* ---- live chat demo (inside the code-explorer feature) --------------------------- */
.demo-wrap { margin: 1.2rem 0 0.6rem; }
.demo-label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin-bottom: 0.4rem;
}
#tmct-demo {
  background: var(--code-bg);
  color: var(--code-fg);
  border-radius: 12px;
  padding: 1rem 1.2rem;
  font: 13.5px/1.6 var(--font-mono);
  overflow-x: auto;
  min-height: 3.5em;
}
#tmct-demo .term-lines > div { white-space: pre-wrap; word-break: break-word; }
#tmct-demo .term-dim { color: var(--muted); }
#tmct-demo .term-error { color: #d9704f; }
#tmct-demo .term-answer { color: var(--code-fg); margin-bottom: 0.5em; }
#tmct-demo .term-prompt-line { color: var(--code-fg); }
#tmct-demo .term-prompt { color: var(--taught); }
#tmct-demo.compact .term-lines > div { margin: 0; }
#tmct-demo .term-input-row {
  display: none;
  align-items: baseline;
  margin-top: 0.3em;
}
#tmct-demo .term-input-row.ready { display: flex; }
#tmct-demo .term-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--code-fg);
  font: inherit;
  padding: 0;
  min-width: 0;
}
#tmct-demo .term-input::placeholder { color: var(--muted); }
#tmct-demo .term-input:disabled { opacity: 0.5; }
.demo-status {
  font-size: 0.78rem;
  color: var(--muted);
  margin-top: 0.5rem;
}
.demo-cli {
  margin-top: 0.5rem;
  font-size: 0.78rem;
  color: var(--muted);
}
.demo-cli pre {
  background: transparent;
  border: 1px dashed var(--line);
  color: var(--muted);
  padding: 0.5rem 0.8rem;
  margin: 0.3rem 0 0;
  font-size: 0.78rem;
}

/* ---- sprite teaser chips (inside the sprite-library feature) --------------------- */
.sprite-teaser { display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem; margin-top: 0.5rem; }
.sprite-chip {
  display: flex; align-items: center; gap: 0.4rem;
  background: var(--card); border: 1px solid var(--line); border-radius: 999px;
  padding: 0.28rem 0.65rem 0.28rem 0.28rem;
}
.sprite-chip svg { width: 20px; height: 20px; color: var(--taught); flex: 0 0 auto; }
.sprite-chip.size-sm svg { width: 14px; height: 14px; }
.sprite-chip.size-lg svg { width: 27px; height: 27px; }
.sprite-chip.size-xl svg { width: 34px; height: 34px; }
.sprite-chain { font: 10.5px/1.3 var(--font-mono); color: var(--muted); white-space: nowrap; }
.sprite-chain .own { color: var(--ink); }
.sprite-chain .arrow { opacity: 0.55; padding: 0 0.15em; }

/* ---- Polycode showcase ----------------------------------------------------------- */
.showcase-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
  gap: 0.9rem; margin: 1.1rem 0 0.4rem;
}
.showcase-card {
  display: flex; flex-direction: column; gap: 0.4rem;
  background: var(--card); border: 1px solid var(--line); border-radius: 14px;
  padding: 1.15rem 1.2rem; text-decoration: none; color: inherit;
  transition: border-color 0.15s ease;
}
.showcase-card:hover, .showcase-card:focus-visible { border-color: var(--entail); }
.showcase-card h3 { font-size: 1.05rem; margin: 0; color: var(--ink); }
.showcase-card p { margin: 0; font-size: 0.875rem; color: var(--muted); line-height: 1.5; }
.showcase-card .showcase-domain {
  font: 0.72rem/1.4 var(--font-mono);
  color: var(--taught);
}

/* ---- per-card actions: an info link and a share control -------------------------
   .claim is itself a link, so these two cannot sit inside it. The cell wraps both
   and positions the actions over the card's bottom-right corner, where .demo-page's
   own pill leaves the row free. */
.demo-cell { position: relative; display: flex; }
.demo-cell > .claim { flex: 1 1 auto; }
/* The actions share the card's last line with .demo-page's filename pill. The
   pill is left-aligned and the actions are pinned right, so the pill only has
   to stay on one line to keep its new-tab glyph out of their way. */
.demo-cell > .claim .demo-page { white-space: nowrap; }
.claim-actions {
  position: absolute; right: 0.85rem; bottom: 0.95rem;
  display: flex; gap: 0.4rem;
}
.card-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 30px; height: 30px; padding: 0;
  background: var(--bg); color: var(--muted);
  border: 1px solid var(--line); border-radius: 999px;
  cursor: pointer; text-decoration: none;
  transition: border-color 0.15s ease, color 0.15s ease;
}
.card-btn svg { width: 16px; height: 16px; }
.card-btn:hover, .card-btn:focus-visible { color: var(--taught); border-color: var(--taught); text-decoration: none; }
.card-btn:focus-visible { outline: 2px solid var(--taught); outline-offset: 2px; }

/* ---- the share sheet ------------------------------------------------------------
   One dialog, reused by every card. share.mjs fills it with that demo's own posts. */
/* The page reset clears the UA's own `margin: auto` on a dialog, so the sheet
   needs it back to sit in the middle. It also has to be a column flex box, or
   .share-list has no height to scroll its overflow against and the last posts
   are clipped instead. */
.share-sheet {
  width: min(38rem, calc(100vw - 2rem));
  max-height: min(40rem, calc(100vh - 4rem));
  margin: auto;
  padding: 0; border: 1px solid var(--line); border-radius: 16px;
  background: var(--bg); color: var(--ink);
}
.share-sheet[open] { display: flex; flex-direction: column; }
.share-head, .share-note { flex: 0 0 auto; }
.share-list { flex: 1 1 auto; min-height: 0; }
.share-sheet::backdrop { background: rgba(0, 0, 0, 0.45); }
.share-head {
  display: flex; align-items: flex-start; gap: 1rem;
  padding: 1.1rem 1.2rem 0.8rem; border-bottom: 1px solid var(--line);
}
.share-head h2 { font-size: 1.1rem; margin: 0; border: none; padding: 0; }
.share-head p { margin: 0.2rem 0 0; font-size: 0.85rem; color: var(--muted); }
.share-close {
  margin-left: auto; flex: 0 0 auto;
  background: none; border: 1px solid var(--line); border-radius: 999px;
  color: var(--muted); cursor: pointer; font: 1rem/1 var(--font-body);
  width: 28px; height: 28px;
}
.share-close:hover { color: var(--ink); border-color: var(--entail); }
.share-list { list-style: none; margin: 0; padding: 0.6rem 1.2rem 1.2rem; overflow-y: auto; }
.share-post {
  border-bottom: 1px solid var(--line);
  padding: 0.85rem 0;
}
.share-post:last-child { border-bottom: none; }
.share-angle {
  font: 600 0.68rem/1.5 var(--font-mono);
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted);
}
.share-text { margin: 0.25rem 0 0.5rem; font-size: 0.92rem; }
.share-target { font: 0.72rem/1.5 var(--font-mono); color: var(--taught); word-break: break-all; }
.share-row { display: flex; flex-wrap: wrap; gap: 0.45rem; margin-top: 0.55rem; }
.share-act {
  font: 0.78rem/1 var(--font-body);
  background: var(--card); color: var(--ink);
  border: 1px solid var(--line); border-radius: 999px;
  padding: 0.5em 0.95em; cursor: pointer;
}
.share-act:hover, .share-act:focus-visible { border-color: var(--taught); color: var(--taught); }
.share-act[data-done="1"] { color: var(--taught); border-color: var(--taught); }
.share-note { padding: 0 1.2rem 1rem; margin: 0; font-size: 0.8rem; color: var(--muted); }

/* ---- the capability matrix ------------------------------------------------------ */
/* Twelve capability columns fit inside main's own width on a laptop; on
   anything narrower the box scrolls sideways so the page itself never does. */
/* position: relative is doing real work. Each cell's mark carries an .sr-only
   label, and .sr-only is absolutely positioned. Without a positioned ancestor
   those labels resolve against the page itself, so the scroll box never clips
   them and the widest one drags the whole document out to the table's width. */
.matrix-wrap { position: relative; overflow-x: auto; margin: 1.2rem 0 0.6rem; -webkit-overflow-scrolling: touch; }
table.matrix { border-collapse: collapse; font-size: 0.85rem; min-width: 55rem; width: 100%; }
table.matrix th, table.matrix td { border-bottom: 1px solid var(--line); padding: 0.55rem 0.3rem; }
table.matrix thead th {
  font: 600 0.62rem/1.35 var(--font-mono);
  letter-spacing: 0.03em; text-transform: uppercase; color: var(--muted);
  text-align: center; vertical-align: bottom; width: 3.7rem;
  border-bottom: 1px solid var(--entail);
}
table.matrix thead th:first-child { text-align: left; width: auto; min-width: 10.5rem; padding-left: 0; }
table.matrix tbody th {
  text-align: left; font-weight: 600; font-size: 0.88rem;
  white-space: nowrap; padding-left: 0;
}
table.matrix tbody th a { color: var(--ink); }
table.matrix tbody th a:hover { color: var(--taught); }
table.matrix tbody tr:hover { background: var(--card); }
table.matrix td { text-align: center; color: var(--entail); }
table.matrix td svg { width: 17px; height: 17px; vertical-align: -0.2em; }
table.matrix td.focus { color: var(--taught); }
.matrix-key {
  display: flex; flex-wrap: wrap; gap: 1.2rem;
  font-size: 0.82rem; color: var(--muted); margin-top: 0.8rem;
}
.matrix-key span { display: inline-flex; align-items: center; gap: 0.4rem; }
.matrix-key svg { width: 16px; height: 16px; }
.matrix-key .focus svg { color: var(--taught); }

/* ---- the about pages ------------------------------------------------------------
   Same tokens, same type, a two-column shell: a sticky section nav on the left and
   the sections themselves on the right. */
.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--card); border: 1px solid var(--line); border-radius: 8px;
  padding: 0.6em 1em; z-index: 10;
}
.skip-link:focus { left: 1rem; top: 1rem; }
.about-shell {
  display: grid; grid-template-columns: 15rem minmax(0, 1fr);
  gap: 0 3rem; max-width: 66rem; margin: 0 auto;
}
/* The page-wide `main { margin: 0 auto }` rule expects a lone <main> to
   centre. .about-main is a grid item instead, and auto margins turn off its
   stretch, shrinking it to its own content width — wide enough to blow past
   the track when a long <code> path can't wrap. Zero it so the item stretches
   to fill its track like any other grid item. */
.about-main { margin: 0; }
.about-nav { position: sticky; top: 2rem; align-self: start; padding-bottom: 2rem; }
.about-nav .eyebrow { margin-bottom: 0.5rem; }
.about-crumbs { list-style: none; margin: 0 0 1.4rem; padding: 0; border-left: 1px solid var(--line); }
.about-crumbs li { margin: 0; }
.about-crumbs a {
  display: block; padding: 0.42rem 0 0.42rem 0.9rem;
  margin-left: -1px; border-left: 2px solid transparent;
  font-size: 0.88rem; color: var(--muted); line-height: 1.4;
}
.about-crumbs a:hover { color: var(--ink); text-decoration: none; }
.about-crumbs a[aria-current="true"] {
  color: var(--taught); border-left-color: var(--taught); font-weight: 600;
}
.about-back, .about-open { display: block; font-size: 0.88rem; margin-bottom: 0.5rem; }
.about-back { color: var(--muted); margin-bottom: 1.6rem; }
.about-back:hover { color: var(--ink); }
.about-head { margin-bottom: 2.4rem; }
.about-head h1 { font-size: clamp(1.8rem, 4vw, 2.4rem); line-height: 1.12; margin: 0; }
.about-head .lede { margin-left: 0; max-width: 40rem; font-size: 1.08rem; }
.about-section { scroll-margin-top: 1.5rem; padding-bottom: 1.6rem; }
.about-section > h2 { font-size: 1.25rem; margin-top: 2.4rem; }
.about-section:first-of-type > h2 { margin-top: 0; }
.about-section p, .about-section li { max-width: 42rem; }
.about-section ul, .about-section ol { margin: 0.7rem 0 0.7rem 1.2rem; }
.about-section li { margin: 0.35rem 0; }
.next-link {
  display: inline-flex; align-items: center; gap: 0.5rem;
  margin-top: 1.2rem;
  background: var(--card); border: 1px solid var(--line); border-radius: 999px;
  padding: 0.6em 1.1em; font-size: 0.88rem; color: var(--ink);
}
.next-link:hover, .next-link:focus-visible { border-color: var(--taught); color: var(--taught); text-decoration: none; }
.next-link .next-label { color: var(--muted); }
.next-link:hover .next-label { color: inherit; }
.transcript {
  background: var(--code-bg); color: var(--code-fg);
  font: 13px/1.6 var(--font-mono);
  padding: 1rem 1.2rem; border-radius: 12px; overflow-x: auto; margin: 0.9rem 0;
  white-space: pre-wrap; word-break: break-word;
}
.transcript .you { color: var(--taught); }
.transcript .cite { color: var(--muted); }
.source-note { font-size: 0.82rem; color: var(--muted); margin-top: -0.4rem; }
.source-note code { font-size: 0.9em; }
.shot { margin: 1.1rem 0; }
.shot img {
  display: block; width: 100%; height: auto;
  border-radius: 10px; border: 1px solid var(--line); background: var(--card);
}
.shot figcaption { margin-top: 0.55rem; font-size: 0.84rem; color: var(--muted); }
.refs { list-style: none; margin: 0.8rem 0 0; padding: 0; }
.refs li { margin: 0 0 0.85rem; padding-left: 1.1rem; border-left: 2px solid var(--line); }
.refs .ref-note { display: block; color: var(--muted); font-size: 0.86rem; margin-top: 0.15rem; }
.factlist { list-style: none; margin: 0.8rem 0; padding: 0; }
.factlist li {
  font: 0.82rem/1.6 var(--font-mono);
  background: var(--card); border: 1px solid var(--line); border-radius: 8px;
  padding: 0.4em 0.7em; margin: 0.3rem 0; overflow-x: auto; white-space: nowrap;
}
/* ---- claims page: one block per results/claims/<name>.json figure --------------- */
.claim-block-grid {
  display: grid; grid-template-columns: 1fr;
  gap: 1rem; margin: 1rem 0 1.6rem;
}
.claim-block {
  background: var(--card); border: 1px solid var(--line); border-radius: 14px;
  padding: 1.15rem 1.25rem; display: flex; flex-direction: column; gap: 0.55rem;
  scroll-margin-top: 1.5rem;
}
.claim-block-kicker {
  font: 0.72rem/1 var(--font-mono); letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--muted); display: flex; justify-content: space-between; gap: 0.5rem;
}
.claim-block-sentence { font-size: 1rem; margin: 0; }
.claim-block-figure {
  font-family: var(--font-display); font-weight: 600; font-size: 2.1rem; line-height: 1;
  color: var(--ink); margin: 0.1rem 0;
}
.claim-block-figure .unit { font-family: var(--font-body); font-weight: 400; font-size: 0.95rem; color: var(--muted); margin-left: 0.4em; }
.claim-block-delta {
  font-family: var(--font-display); font-weight: 600; font-size: 1.5rem; line-height: 1.3;
  display: flex; align-items: baseline; gap: 0.5em; flex-wrap: wrap; margin: 0.1rem 0;
}
.claim-block-delta .arrow { color: var(--muted); font-weight: 400; font-size: 1.1rem; }
.claim-block-delta .after { color: var(--taught); }
.claim-block-delta .delta { font-family: var(--font-mono); font-weight: 400; font-size: 0.85rem; color: var(--muted); }
.claim-block .not-mean { font-size: 0.88rem; color: var(--muted); margin: 0; }
.claim-block .not-mean strong { color: var(--ink); }
.claim-block .claim-block-standard { font-size: 0.8rem; color: var(--muted); margin: 0; }
.claim-block .claim-block-standard strong { color: var(--ink); }
.claim-block table { border-collapse: collapse; width: 100%; margin: 0.2rem 0; font-size: 0.86rem; }
.claim-block th, .claim-block td { text-align: left; padding: 0.3em 0.6em 0.3em 0; border-bottom: 1px solid var(--line); }
.claim-block th { color: var(--muted); font-weight: 500; }
.claim-block-links { display: flex; gap: 0.9rem; flex-wrap: wrap; font-size: 0.82rem; }
.claim-block-links a { color: var(--muted); }
.claim-block-links a:hover { color: var(--entail); }
.claims-bench {
  background: var(--card); border: 1px solid var(--line); border-radius: 14px;
  padding: 1.15rem 1.25rem; margin: 1rem 0; display: flex; flex-direction: column; gap: 0.7rem;
}
.claims-bench-btn {
  align-self: flex-start; font: 0.9rem/1 var(--font-body); font-weight: 600;
  background: var(--ink); color: var(--bg); border: none; border-radius: 999px;
  padding: 0.65em 1.3em; cursor: pointer;
}
.claims-bench-btn:hover { opacity: 0.88; }
.claims-bench-btn:disabled { opacity: 0.55; cursor: default; }
.claims-bench-result { font: 0.88rem/1.6 var(--font-mono); color: var(--muted); white-space: pre-wrap; }
.claims-bench-result .ink { color: var(--ink); }

@media (max-width: 860px) {
  .about-shell { grid-template-columns: minmax(0, 1fr); gap: 0; }
  .about-nav { position: static; padding-bottom: 1.5rem; border-bottom: 1px solid var(--line); margin-bottom: 2rem; }
  .about-crumbs { columns: 2; column-gap: 1.5rem; border-left: none; }
  .about-crumbs a { padding-left: 0; border-left: none; }
  .about-crumbs a[aria-current="true"] { border-left: none; }
}
@media (max-width: 520px) {
  .about-crumbs { columns: 1; }
}

/* ---- eyebrow strip: jumps into the page, plus one link out to the source ----------
   Links here inherit the strip's own muted weight rather than taking the accent, so
   the row still reads as an eyebrow. */
.eyebrow a { color: inherit; text-decoration: none; }
.eyebrow a:hover { color: var(--ink); text-decoration: underline; text-underline-offset: 3px; }
.eyebrow a:focus-visible { outline: 2px solid var(--taught); outline-offset: 2px; border-radius: 2px; }

.nowrap { white-space: nowrap; }

/* ---- hero media: poster-first video under the lede ----------
   A bare <video poster> paints the LCP image immediately; the clip's <source>
   is added only when a recording ships. Reduced motion swaps the element for
   a plain img. */
.hero-media { max-width: 48rem; margin: 0 auto 3rem; }
.hero-video, .hero-media-fallback {
  display: block; width: 100%; height: auto;
  aspect-ratio: 1200 / 630; object-fit: cover;
  border-radius: 14px; border: 1px solid var(--line);
  background: var(--card);
}
.hero-media-fallback { display: none; }
@media (prefers-reduced-motion: reduce) {
  .hero-video { display: none; }
  .hero-media-fallback { display: block; }
}