/* Ephemerent professional polish: shared grid, typography, navigation and restrained motion. */
@font-face {
  font-family: 'Hanken Grotesk';
  font-style: normal;
  font-weight: 400 700;
  font-display: optional;
  src: url('fonts/hanken-grotesk-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: 'Newsreader';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('fonts/newsreader-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: 'Newsreader';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('fonts/newsreader-500-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: 'Newsreader';
  font-style: italic;
  font-weight: 400;
  font-display: swap;
  src: url('fonts/newsreader-italic-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: 'Newsreader';
  font-style: italic;
  font-weight: 500;
  font-display: swap;
  src: url('fonts/newsreader-italic-500-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('fonts/ibm-plex-mono-400-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('fonts/ibm-plex-mono-500-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('fonts/ibm-plex-mono-600-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

:root {
  --site-max: 1280px;
  --site-gutter: clamp(20px, 3.2vw, 48px);
  --site-nav: 68px;
  --radius-control: 3px;
  --radius-panel: 4px;
  --motion-control: 180ms;
  --motion-enter: 520ms;
}

html {
  scrollbar-gutter: stable;
  text-rendering: optimizeLegibility;
}
body {
  overflow-x: clip;
  font-synthesis: none;
}
h1, h2, h3, h4 { text-wrap: balance; }
p, li { text-wrap: pretty; }
::selection {
  background: color-mix(in srgb, var(--signal, var(--accent, #156054)) 76%, transparent);
  color: var(--bg, var(--paper, #f3f0e8));
}
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
summary:focus-visible,
[tabindex]:focus-visible,
[role="button"]:focus-visible {
  outline: 2px solid var(--accent, var(--signal, #4c8bf5));
  outline-offset: 3px;
}
.sr-only {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}
section[id],
header[id],
main[id] { scroll-margin-top: calc(var(--site-nav) + 18px); }
.wrap,
.ewrap,
.nav-inner,
.ebar-in {
  width: min(100%, var(--site-max));
  max-width: var(--site-max);
  padding-inline: var(--site-gutter);
}

.site-grid,
.hero-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  column-gap: clamp(16px, 2vw, 28px);
}

/* Quiet product surfaces. */
body.space-bg,
.space-bg {
  background: var(--bg, #0c0d0f);
}

/* Shared controls. */
.btn,
.ebtn,
.card,
.price-card,
.chip,
.prov-table,
.auth-card,
.account-plan,
.pipe,
.flow-step,
.proof-stage,
.engine-card {
  border-radius: var(--radius-panel) !important;
}
.btn,
.ebtn,
button,
input,
select { border-radius: var(--radius-control) !important; }
.btn {
  min-height: 44px;
  transition: color var(--motion-control), background var(--motion-control), border-color var(--motion-control), transform var(--motion-control) !important;
}
.btn [aria-hidden="true"],
.ebtn [aria-hidden="true"] {
  display: inline-block;
  transition: transform var(--motion-control) cubic-bezier(.22, 1, .36, 1);
}

.story-branch-field {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}
.btn:hover [aria-hidden="true"],
.ebtn:hover [aria-hidden="true"] { transform: translateX(3px); }
.btn-primary {
  background: var(--ink) !important;
  color: var(--bg) !important;
  box-shadow: none !important;
}
.btn-primary:hover { background: #fff !important; box-shadow: none !important; }
.btn-ghost { background: transparent !important; }
.reveal { transition-duration: var(--motion-enter) !important; }
.hero .reveal.in,
.ehero .rv.in,
.ap-hero .rv.in {
  opacity: 1;
  transform: none;
  transition: none !important;
}
.card,
.price-card,
.flow-step,
.account-plan {
  background: var(--panel) !important;
  box-shadow: none !important;
}
.card-hover:hover { transform: translateY(-1px); box-shadow: none !important; }

/* Product palette: one signal colour per product. */
body.orrery-page,
body.utility-page {
  --bg: #0c0d0f;
  --bg-2: #101216;
  --panel: #13161a;
  --panel-2: #171b20;
  --line: rgba(225, 231, 238, 0.10);
  --line-strong: rgba(225, 231, 238, 0.22);
  --ink: #f2f4f5;
  --ink-2: #c4cbd1;
  --muted: #929ba3;
  --faint: #77818a;
  --signal: #8eb7d6;
  --teal: var(--signal);
  --teal-lt: var(--signal);
  --violet: var(--signal);
  --violet-lt: var(--signal);
  --brass: var(--signal);
  --brass-lt: var(--signal);
  --display: 'Hanken Grotesk', system-ui, sans-serif;
  --body: 'Hanken Grotesk', system-ui, sans-serif;
}
body.vellum-page {
  --bg: #12110f;
  --bg-2: #171613;
  --panel: #1c1a17;
  --panel-2: #211f1b;
  --line: rgba(239, 231, 214, 0.11);
  --line-strong: rgba(239, 231, 214, 0.24);
  --ink: #f2ede2;
  --ink-2: #c8c0b1;
  --muted: #9a9285;
  --faint: #8a8276;
  --signal: #e5ae4e;
  --teal: var(--signal);
  --teal-lt: var(--signal);
  --violet: var(--signal);
  --violet-lt: var(--signal);
  --brass: var(--signal);
  --brass-lt: var(--signal);
  --display: 'Hanken Grotesk', system-ui, sans-serif;
  --body: 'Hanken Grotesk', system-ui, sans-serif;
  --wf-edge: 229,174,78;
  --wf-hot: 242,237,226;
  --wf-node: 229,174,78;
  --wf-grid: 190,181,164;
}
html[data-theme="hybrid"] body.vellum-page {
  background: var(--bg);
  font-family: 'Hanken Grotesk', system-ui, sans-serif;
}

body.orrery-page .display,
body.vellum-page .display,
body.utility-page .display {
  font-family: 'Hanken Grotesk', system-ui, sans-serif;
  font-weight: 520;
  letter-spacing: -0.045em;
}
html[data-theme="hybrid"] body.vellum-page .display { font-weight: 520; }
body.orrery-page .eyebrow,
body.vellum-page .eyebrow,
body.utility-page .eyebrow { color: var(--signal); }
body.orrery-page .eyebrow::before,
body.vellum-page .eyebrow::before,
body.utility-page .eyebrow::before { background: var(--signal); }

/* Shared navigation and accessible mobile menu. */
.nav,
.ebar {
  min-height: var(--site-nav);
  border-bottom: 1px solid var(--line, var(--rule));
  background: color-mix(in srgb, var(--bg, var(--paper)) 98%, transparent);
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}
.nav-inner,
.ebar-in { min-height: var(--site-nav); padding-block: 0; }
.nav.scrolled,
.ebar.scrolled {
  background: color-mix(in srgb, var(--bg, var(--paper)) 97%, transparent) !important;
  border-bottom-color: var(--line, var(--rule));
  backdrop-filter: none !important;
  -webkit-backdrop-filter: none !important;
}
.nav-links,
.enav { gap: clamp(16px, 2vw, 28px); }
.nav-links a,
.enav a {
  position: relative;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  transition: color var(--motion-control);
}
.nav-links a::after,
.enav a::after {
  content: '';
  position: absolute;
  right: 0;
  bottom: 7px;
  left: 0;
  height: 1px;
  background: currentColor;
  opacity: .5;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--motion-control) cubic-bezier(.22, 1, .36, 1);
}
.nav-links a:hover::after,
.nav-links a:focus-visible::after,
.enav a:hover::after,
.enav a:focus-visible::after,
.nav-links a[aria-current="page"]::after,
.enav a[aria-current="page"]::after { transform: scaleX(1); }
.enav .est::after { display: none; }
.menu-toggle {
  display: none;
  min-width: 74px;
  min-height: 44px;
  padding: 0 12px;
  border: 1px solid var(--line-strong, var(--rule));
  color: var(--ink);
  background: transparent;
  font: 400 12px/1 var(--mono, monospace);
  letter-spacing: .06em;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  cursor: pointer;
}
.menu-toggle-lines { width: 14px; display: grid; gap: 4px; }
.menu-toggle-lines i { height: 1px; background: currentColor; transition: transform var(--motion-control); }
.menu-open .menu-toggle-lines i:first-child { transform: translateY(2.5px) rotate(45deg); }
.menu-open .menu-toggle-lines i:last-child { transform: translateY(-2.5px) rotate(-45deg); }

/* Restrained entrance motion. */
.reveal,
.rv {
  transform: translateY(14px);
  transition-duration: var(--motion-enter) !important;
  transition-timing-function: cubic-bezier(.22, 1, .36, 1) !important;
}
.reveal.d1,
.reveal.d2,
.reveal.d3,
.reveal.d4 { transition-delay: 0s; }
.hero-scroll { animation: none !important; }

/* Orrery: editorial copy paired with an honest system diagram. */
body.orrery-page .hero {
  min-height: 100svh;
  padding: calc(var(--site-nav) + 72px) 0 72px;
  align-items: center;
  overflow: clip;
  border-bottom: 1px solid var(--line);
}
body.orrery-page .hero-veil,
body.orrery-page .hero-canvas { display: none; }
body.orrery-page .hero-inner {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 28px;
  align-items: center;
  padding-top: 0;
}
body.orrery-page .hero-copy { grid-column: 1 / span 5; max-width: none; }
body.orrery-page .hero-h1,
body.vellum-page .hero-h1 { font-size: clamp(50px, 6vw, 88px); margin: 22px 0 24px; }
body.orrery-page .hero-providers,
body.vellum-page .hero-providers {
  margin-top: 38px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  gap: 0;
}
body.orrery-page .prov,
body.vellum-page .prov {
  padding: 4px 10px 4px 0;
  margin-right: 10px;
  border: 0;
  border-radius: 0 !important;
  background: transparent;
  color: var(--muted);
}
body.orrery-page .prov-local,
body.vellum-page .prov-local { color: var(--signal); background: transparent; }

.hero-run-diagram {
  grid-column: 7 / -1;
  margin: 0;
  min-width: 0;
  border: 1px solid var(--line-strong);
  background: var(--bg-2);
}
.hero-run-head {
  min-height: 39px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 0 13px;
  border-bottom: 1px solid var(--line);
  color: var(--faint);
  font: 500 10px/1 var(--mono);
  letter-spacing: .08em;
  text-transform: uppercase;
}
.hero-run-head span:first-child { color: var(--signal); }
.hero-run-body {
  display: grid;
  grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr);
  gap: 16px;
  padding: clamp(18px, 2.4vw, 30px);
}
.hero-run-node,
.hero-run-branches {
  min-width: 0;
  padding: 15px 16px;
  border-top: 1px solid var(--line-strong);
  background: var(--panel);
}
.hero-run-node { display: flex; flex-direction: column; gap: 6px; }
.hero-run-node > span,
.hero-run-branches > span {
  color: var(--signal);
  font: 500 10px/1.4 var(--mono);
  letter-spacing: .08em;
  text-transform: uppercase;
}
.hero-run-node strong { font-size: 15px; font-weight: 560; }
.hero-run-node small { color: var(--muted); font: 400 11px/1.5 var(--mono); }
.hero-run-branches { grid-column: 2; grid-row: 1 / span 2; }
.hero-run-branches > div { display: grid; gap: 8px; margin-top: 14px; }
.hero-run-branches article {
  display: grid;
  grid-template-columns: 36px 1fr;
  align-items: center;
  min-height: 48px;
  border: 1px solid var(--line);
  background: var(--panel-2);
}
.hero-run-branches b {
  align-self: stretch;
  display: grid;
  place-items: center;
  border-right: 1px solid var(--line);
  color: var(--signal);
  font: 500 10px/1 var(--mono);
}
.hero-run-branches article span { padding: 0 12px; color: var(--ink-2); font-size: 13px; }
.hero-run-decision { grid-column: 1 / -1; border-left: 3px solid var(--signal); }
.hero-run-foot {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 11px 13px;
  border-top: 1px solid var(--line);
  color: var(--faint);
  font: 400 10.5px/1.5 var(--mono);
}

body.orrery-page .loop-section,
body.vellum-page .loop-section,
body.orrery-page .models-section,
body.vellum-page .models-section,
body.orrery-page .pricing-section,
body.vellum-page .pricing-section,
body.vellum-page .review-section { background: var(--bg-2); }
.loop-rail { justify-content: space-between; }
.loop-step { min-width: 120px; }

body.orrery-page .swarm-card { padding: clamp(18px, 2.5vw, 32px); }
.lifecycle-demo-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
  color: var(--faint);
  font: 500 10px/1.4 var(--mono);
  letter-spacing: .1em;
  text-transform: uppercase;
}
.lifecycle-demo-head span:first-child { color: var(--signal); }
.lifecycle-grid {
  display: grid;
  grid-template-columns: minmax(130px, .85fr) 24px minmax(250px, 1.7fr) 24px minmax(160px, 1fr) 24px minmax(145px, .9fr);
  align-items: stretch;
  padding: 32px 0;
}
.lifecycle-panel,
.lifecycle-worktrees {
  min-width: 0;
  min-height: 220px;
  padding: 17px;
  border: 1px solid var(--line);
  border-top-color: var(--line-strong);
  background: var(--panel-2);
  opacity: .55;
  transition: opacity var(--motion-enter), border-color var(--motion-enter), transform var(--motion-enter);
}
.lifecycle-panel {
  display: flex;
  flex-direction: column;
  gap: 8px;
  justify-content: center;
}
.lifecycle-panel.is-active,
.lifecycle-worktrees.is-active { opacity: 1; border-top-color: var(--signal); transform: translateY(-3px); }
.lifecycle-panel.is-complete,
.lifecycle-worktrees.is-complete { opacity: .82; }
.lifecycle-kicker {
  display: block;
  color: var(--signal);
  font: 500 9.5px/1.4 var(--mono);
  letter-spacing: .08em;
  text-transform: uppercase;
}
.lifecycle-panel > strong { color: var(--ink); font-size: 15px; font-weight: 560; line-height: 1.35; }
.lifecycle-panel > small { color: var(--muted); font: 400 10.5px/1.55 var(--mono); }
.lifecycle-worktree-list { display: grid; gap: 8px; margin-top: 16px; }
.lifecycle-worktree-list article {
  display: grid;
  grid-template-columns: 32px minmax(62px, .75fr) 1.25fr;
  align-items: center;
  min-height: 45px;
  border: 1px solid var(--line);
  background: var(--panel);
}
.lifecycle-worktree-list article > * { padding: 0 10px; }
.lifecycle-worktree-list article > span {
  align-self: stretch;
  display: grid;
  place-items: center;
  border-right: 1px solid var(--line);
  color: var(--signal);
  font-size: 10px;
}
.lifecycle-worktree-list strong { font-size: 12.5px; font-weight: 540; }
.lifecycle-worktree-list small { color: var(--muted); font: 400 10px/1.4 var(--mono); }
.lifecycle-connector { display: grid; place-items: center; overflow: hidden; }
.lifecycle-connector i { width: 100%; height: 1px; background: var(--line-strong); transform: scaleX(.35); transition: transform 520ms, background 520ms; }
[data-run-step="1"] .lifecycle-connector:nth-of-type(1) i,
[data-run-step="2"] .lifecycle-connector:nth-of-type(-n+2) i,
[data-run-step="3"] .lifecycle-connector i { transform: scaleX(1); background: var(--signal); }
.lifecycle-verify ul { list-style: none; display: grid; gap: 7px; margin-top: 8px; }
.lifecycle-verify li { display: flex; justify-content: space-between; gap: 8px; padding-top: 7px; border-top: 1px solid var(--line); color: var(--muted); font: 400 9.5px/1.3 var(--mono); }
.lifecycle-verify li b { color: var(--ink-2); font-weight: 500; }
.lifecycle-owner { margin-top: auto; padding-top: 10px; border-top: 1px solid var(--line); color: var(--signal); font: 500 10px/1.4 var(--mono); text-transform: uppercase; }
.lifecycle-transcript { border-top: 1px solid var(--line-strong); }
.lifecycle-transcript-head {
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  border-bottom: 1px solid var(--line);
}
.lifecycle-transcript-head > div:first-child { display: grid; gap: 4px; }
.lifecycle-transcript-head span { color: var(--faint); font: 400 10px/1.2 var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.lifecycle-transcript-head strong { color: var(--signal); font: 500 12px/1.2 var(--mono); text-transform: uppercase; }
.lifecycle-controls { display: flex; gap: 8px; }
.lifecycle-controls button {
  min-height: 40px;
  padding: 0 12px;
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--ink-2);
  font: 500 10.5px/1 var(--mono);
  cursor: pointer;
}
.lifecycle-controls button:hover { border-color: var(--signal); color: var(--ink); }
.lifecycle-transcript ol { list-style: none; display: grid; grid-template-columns: repeat(4, 1fr); }
.lifecycle-transcript li {
  min-width: 0;
  min-height: 140px;
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: 10px;
  padding: 16px 14px;
  border-right: 1px solid var(--line);
  border-top: 2px solid transparent;
  opacity: .5;
  transition: opacity var(--motion-enter), border-color var(--motion-enter);
}
.lifecycle-transcript li:last-child { border-right: 0; }
.lifecycle-transcript li[aria-current="step"] { opacity: 1; border-top-color: var(--signal); }
.lifecycle-transcript li > span { color: var(--signal); font-size: 9.5px; }
.lifecycle-transcript li strong { display: block; margin-bottom: 6px; color: var(--ink-2); font-size: 12px; font-weight: 560; }
.lifecycle-transcript li p { color: var(--muted); font-size: 11px; line-height: 1.5; }
.lifecycle-demo[data-motion="static"] .lifecycle-controls { display: none; }
.artifact-note {
  margin: 14px 0 0;
  color: var(--faint);
  font: 400 11px/1.6 var(--mono);
}

/* Vellum: a visible, scroll-stepped scene occupies the hero. */
body.vellum-page .hero {
  min-height: 150svh;
  display: block;
  overflow: visible;
  border-bottom: 1px solid var(--line);
}
body.vellum-page .hero-inner {
  position: sticky;
  top: var(--site-nav);
  min-height: calc(100svh - var(--site-nav));
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 28px;
  align-items: center;
  padding-top: 36px;
  padding-bottom: 36px;
}
body.vellum-page .hero-copy { grid-column: 1 / span 5; max-width: none; }
body.vellum-page .hero-veil { display: none; }
.vellum-hero-stage {
  grid-column: 7 / -1;
  position: relative;
  min-height: min(66svh, 680px);
  margin: 0;
  border: 1px solid var(--line-strong);
  background: #090806;
  overflow: hidden;
}
body.vellum-page .vellum-hero-stage .hero-canvas {
  display: block !important;
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: .92;
  transition: opacity 420ms, filter 420ms;
}
.vellum-cpu-frame {
  position: absolute;
  inset: 40px 0 0;
  width: 100%;
  height: calc(100% - 40px);
  object-fit: cover;
  image-rendering: auto;
  opacity: 0;
  transform: scale(1.015);
  transition: opacity 420ms, transform 420ms;
}
.vellum-stage-head {
  position: absolute;
  z-index: 4;
  inset: 0 0 auto;
  min-height: 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 13px;
  border-bottom: 1px solid var(--line);
  background: rgba(9,8,6,.88);
  color: var(--faint);
  font: 500 10px/1 var(--mono);
  letter-spacing: .08em;
  text-transform: uppercase;
}
.vellum-stage-head strong { color: var(--signal); font-weight: 500; }
.vellum-state-rail {
  position: absolute;
  z-index: 4;
  inset: auto 14px 14px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  background: rgba(9,8,6,.90);
  border: 1px solid var(--line-strong);
}
.vellum-state-rail span {
  padding: 10px 11px;
  border-right: 1px solid var(--line);
  color: var(--faint);
  font: 500 10px/1.35 var(--mono);
}
.vellum-state-rail span:last-child { border-right: 0; }
.vellum-stage-receipt {
  position: absolute;
  z-index: 3;
  right: 20px;
  top: 64px;
  width: min(280px, calc(100% - 40px));
  padding: 16px;
  border: 1px solid var(--line-strong);
  background: rgba(9,8,6,.94);
  color: var(--ink-2);
  font: 400 11px/1.7 var(--mono);
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 420ms, transform 420ms;
}
.vellum-stage-receipt b { display: block; color: var(--signal); font-weight: 500; margin-bottom: 6px; }
[data-scene-step="0"] .vellum-state-rail span:nth-child(1),
[data-scene-step="1"] .vellum-state-rail span:nth-child(2),
[data-scene-step="2"] .vellum-state-rail span:nth-child(3),
[data-scene-step="3"] .vellum-state-rail span:nth-child(4) { color: var(--signal); box-shadow: inset 0 -2px 0 var(--signal); }
[data-scene-step="0"] .vellum-hero-stage .hero-canvas { opacity: .55; filter: blur(.2px) saturate(.45); }
[data-scene-step="1"] .vellum-hero-stage .hero-canvas { opacity: .95; filter: none; }
[data-scene-step="2"] .vellum-hero-stage .hero-canvas { opacity: 1; filter: contrast(1.08); }
[data-scene-step="2"] .vellum-cpu-frame,
[data-scene-step="3"] .vellum-cpu-frame { opacity: .76; transform: none; }
[data-scene-step="3"] .vellum-hero-stage .hero-canvas { opacity: .22; }
[data-scene-step="3"] .vellum-stage-receipt { opacity: 1; transform: none; }
body.vellum-page .hero-scroll { display: none; }

body.vellum-page .proof-stage,
body.vellum-page .review-stage,
body.vellum-page .engine-view {
  background: #090806 !important;
  box-shadow: none !important;
}
body.vellum-page .proof-stage::after,
body.vellum-page .review-stage::after,
body.vellum-page .engine-view::after { display: none !important; }
body.vellum-page .price-card.featured { box-shadow: none !important; }

.evidence-document,
.system-anatomy,
.proof-contract {
  border: 1px solid var(--line);
  border-top-color: var(--line-strong);
  background: var(--bg-2);
}
.evidence-document-head,
.system-anatomy-head,
.proof-contract-head {
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 0 14px;
  border-bottom: 1px solid var(--line);
  color: var(--faint);
  font: 500 10px/1.4 var(--mono);
  letter-spacing: .09em;
  text-transform: uppercase;
}
.evidence-document-head span:first-child,
.system-anatomy-head span:first-child,
.proof-contract-head span:first-child { color: var(--signal); }
.evidence-row {
  display: grid;
  grid-template-columns: minmax(130px, .8fr) minmax(220px, 1.35fr) minmax(220px, 1.35fr);
  border-bottom: 1px solid var(--line);
}
.evidence-row:last-child { border-bottom: 0; }
.evidence-row > * { min-width: 0; padding: 16px 18px; border-right: 1px solid var(--line); }
.evidence-row > *:last-child { border-right: 0; }
.evidence-row b { color: var(--ink); font-size: 14px; font-weight: 560; }
.evidence-row span { color: var(--muted); font-size: 13.5px; line-height: 1.55; }
.evidence-row-head > * { color: var(--faint); font: 500 10px/1.4 var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.system-anatomy { display: grid; grid-template-columns: repeat(3, 1fr); }
.system-anatomy-head { grid-column: 1 / -1; }
.system-anatomy section { min-width: 0; padding: clamp(22px, 3vw, 34px); border-right: 1px solid var(--line); }
.system-anatomy section:last-child { border-right: 0; }
.system-anatomy section > span { color: var(--signal); font-size: 10px; letter-spacing: .08em; text-transform: uppercase; }
.system-anatomy h3 { margin: 24px 0 12px; font-size: 21px; font-weight: 560; }
.system-anatomy p { min-height: 96px; color: var(--muted); font-size: 14px; line-height: 1.6; }
.system-anatomy ul { list-style: none; margin-top: 22px; border-top: 1px solid var(--line); }
.system-anatomy li { padding: 10px 0; border-bottom: 1px solid var(--line); color: var(--ink-2); font: 400 11.5px/1.5 var(--mono); }
.proof-contract { min-height: 100%; }
.proof-contract > div:not(.proof-contract-head) { display: grid; grid-template-columns: .8fr 1.5fr; border-bottom: 1px solid var(--line); }
.proof-contract > div:not(.proof-contract-head) > * { padding: 15px 16px; }
.proof-contract > div:not(.proof-contract-head) span { color: var(--signal); font: 500 10px/1.4 var(--mono); text-transform: uppercase; }
.proof-contract > div:not(.proof-contract-head) b { border-left: 1px solid var(--line); color: var(--ink-2); font: 400 11.5px/1.5 var(--mono); }
.proof-contract p { margin: 20px; color: var(--muted); font-size: 13px; line-height: 1.6; }

/* Indexed research document. */
body.research-page .research-index-wrap {
  position: sticky;
  top: calc(var(--site-nav) + 24px);
  height: 0;
  z-index: 8;
}
body.research-page .research-index {
  position: relative;
  width: 218px;
  border-top: 1px solid var(--rule);
}
.research-index::after {
  content: '';
  position: absolute;
  left: -1px;
  top: 0;
  width: 2px;
  height: calc(var(--scene-progress, 0) * 100%);
  max-height: 100%;
  background: var(--accent);
}
.research-index a {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 10px;
  padding: 13px 0;
  border-bottom: 1px solid var(--rule);
  color: var(--muted);
  font-size: 13px;
}
.research-index a span { color: var(--accent); font-family: var(--mono); font-size: 10px; }
.research-index a:hover { color: var(--ink); }
@media (min-width: 881px) {
  body.research-page .esec > .ewrap { padding-left: calc(var(--site-gutter) + 250px); }
}

/* Workflow utility pages use split, task-oriented compositions. */
body.utility-page .auth-main {
  width: min(100%, var(--site-max));
  margin-inline: auto;
  padding: calc(var(--site-nav) + 72px) var(--site-gutter) 72px;
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 28px;
  align-items: start;
}
body.utility-page .auth-main::before {
  content: attr(data-workflow-label);
  grid-column: 1 / span 4;
  min-height: 360px;
  padding-top: 8px;
  border-top: 1px solid var(--line-strong);
  color: var(--signal);
  font: 500 11px/1.5 var(--mono);
  letter-spacing: .14em;
  text-transform: uppercase;
}
body.utility-page .auth-card {
  grid-column: 5 / span 6;
  max-width: none !important;
  padding: 0 0 48px;
  border: 0;
  border-top: 1px solid var(--line-strong);
  background: transparent;
  box-shadow: none;
}
body.utility-page .auth-card h1 { font-size: clamp(34px, 4vw, 54px); margin: 26px 0 12px; }
body.utility-page .auth-card .sub { max-width: 52ch; }
body.utility-page .auth-input { background: var(--panel); }
body.utility-page .account-plan { border-left: 3px solid var(--signal); }
#cloud-auth-primary { min-height: 320px; }
body.utility-page .auth-main[data-workflow-label="Account / Vellum handoff"] .auth-card { min-height: 680px; }
.connect-status { color: var(--muted); }
.utility-footer {
  border-top: 1px solid var(--line);
  color: var(--faint);
}
.utility-footer-inner {
  width: min(100%, var(--site-max));
  min-height: 88px;
  margin-inline: auto;
  padding: 20px var(--site-gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  font-size: 12px;
}
.utility-footer nav { display: flex; align-items: center; gap: 22px; }
.utility-footer a { min-height: 44px; display: inline-flex; align-items: center; color: var(--muted); }
.utility-footer a:hover { color: var(--ink); }
.error-main {
  width: min(100%, var(--site-max));
  min-height: calc(100svh - 88px);
  margin-inline: auto;
  padding: calc(var(--site-nav) + 100px) var(--site-gutter) 100px;
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  align-content: center;
  column-gap: 28px;
}
.error-main > * { grid-column: 3 / span 7; }
.error-code { margin-bottom: 18px; color: var(--signal); font-size: 11px; letter-spacing: .16em; text-transform: uppercase; }
.error-main h1 { margin-bottom: 18px; font-size: clamp(42px, 7vw, 82px); }
.error-main p { max-width: 48ch; color: var(--muted); font-size: 18px; line-height: 1.65; }
.error-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 30px; }

/* Tables and data are treated as documents, not dashboard cards. */
.compare-wrap { overflow-x: auto; border-top: 1px solid var(--line-strong); }
.compare { min-width: 760px; }
.compare th,
.compare td { border-radius: 0 !important; }

@media (max-width: 980px) {
  .lifecycle-grid { grid-template-columns: 1fr; gap: 8px; padding-block: 24px; }
  .lifecycle-panel,
  .lifecycle-worktrees { min-height: 0; }
  .lifecycle-connector { min-height: 18px; }
  .lifecycle-connector i { width: 1px; height: 100%; transform: scaleY(.35); }
  [data-run-step="1"] .lifecycle-connector:nth-of-type(1) i,
  [data-run-step="2"] .lifecycle-connector:nth-of-type(-n+2) i,
  [data-run-step="3"] .lifecycle-connector i { transform: scaleY(1); }
  body.orrery-page .hero-copy,
  body.vellum-page .hero-copy { grid-column: 1 / span 6; }
  .hero-run-diagram,
  .vellum-hero-stage { grid-column: 7 / -1; }
  body.vellum-page .hero-h1,
  body.orrery-page .hero-h1 { font-size: clamp(46px, 7vw, 72px); }
}

@media (max-width: 880px) {
  .motion-ready .menu-toggle { display: inline-flex; }
  .motion-ready .nav-links,
  .motion-ready .enav {
    display: none;
    position: absolute;
    inset: calc(var(--site-nav) - 1px) 0 auto;
    min-height: calc(100svh - var(--site-nav));
    padding: 24px var(--site-gutter) 48px;
    border-top: 1px solid var(--line, var(--rule));
    background: var(--bg, var(--paper));
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }
  .motion-ready .menu-open .nav-links,
  .motion-ready .menu-open .enav {
    display: flex;
    animation: menu-panel-in 220ms cubic-bezier(.22, 1, .36, 1) both;
  }
  .motion-ready .menu-open .enav a { display: flex !important; }
  .motion-ready .nav-links a,
  .motion-ready .enav a {
    min-height: 58px;
    border-bottom: 1px solid var(--line, var(--rule));
    font-size: 17px;
  }
  .motion-ready .enav .est { display: block; margin-top: 24px; }
  .menu-lock { overflow: hidden; }

  @keyframes menu-panel-in {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: none; }
  }

  body.orrery-page .hero,
  body.vellum-page .hero { min-height: auto; padding-top: calc(var(--site-nav) + 60px); }
  body.vellum-page .hero-inner { position: relative; top: auto; min-height: auto; }
  body.orrery-page .hero-copy,
  body.vellum-page .hero-copy,
  .hero-run-diagram,
  .vellum-hero-stage { grid-column: 1 / -1; }
  .hero-run-diagram,
  .vellum-hero-stage { margin-top: 30px; min-height: 470px; }
  body.orrery-page .hero-scroll { display: none; }

  body.research-page .research-index-wrap { position: relative; top: auto; height: auto; margin-top: 36px; }
  body.research-page .research-index { width: 100%; display: grid; grid-template-columns: 1fr 1fr; }
  body.research-page .research-index a:nth-child(odd) { border-right: 1px solid var(--rule); padding-right: 14px; }
  body.research-page .research-index a:nth-child(even) { padding-left: 14px; }
  body.utility-page .auth-main::before { grid-column: 1 / span 4; }
  body.utility-page .auth-card { grid-column: 5 / -1; }
  .lifecycle-transcript ol { grid-template-columns: 1fr 1fr; }
  .lifecycle-transcript li:nth-child(2) { border-right: 0; }
  .lifecycle-transcript li:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .system-anatomy { grid-template-columns: 1fr; }
  .system-anatomy-head { grid-column: 1; }
  .system-anatomy section { border-right: 0; border-bottom: 1px solid var(--line); }
  .system-anatomy section:last-child { border-bottom: 0; }
  .system-anatomy p { min-height: 0; }
}

@media (max-width: 640px) {
  :root { --site-nav: 64px; }
  .brand-by { display: none; }
  .auth-nav-slot { margin-left: 0; }
  .auth-nav-slot .btn { display: none; }
  .hero-run-diagram,
  .vellum-hero-stage { min-height: 390px; }
  .hero-run-head,
  .hero-run-foot { flex-direction: column; align-items: flex-start; }
  .hero-run-body { grid-template-columns: 1fr; }
  .hero-run-branches { grid-column: 1; grid-row: auto; }
  .hero-run-decision { grid-column: 1; }
  .lifecycle-demo-head,
  .lifecycle-transcript-head { align-items: flex-start; flex-direction: column; padding-block: 14px; }
  .lifecycle-worktree-list article { grid-template-columns: 32px 70px 1fr; }
  .lifecycle-transcript ol { grid-template-columns: 1fr; }
  .lifecycle-transcript li,
  .lifecycle-transcript li:nth-child(2) { border-right: 0; border-bottom: 1px solid var(--line); min-height: 0; }
  .lifecycle-transcript li:last-child { border-bottom: 0; }
  .evidence-document-head,
  .system-anatomy-head,
  .proof-contract-head { min-height: 0; padding-block: 14px; align-items: flex-start; flex-direction: column; }
  .evidence-row { grid-template-columns: 1fr; }
  .evidence-row > * { border-right: 0; padding-block: 9px; }
  .evidence-row > *:first-child { padding-top: 16px; }
  .evidence-row > *:last-child { padding-bottom: 16px; }
  .evidence-row-head { display: none; }
  .vellum-state-rail { grid-template-columns: 1fr 1fr; }
  .vellum-state-rail span:nth-child(2) { border-right: 0; }
  .vellum-state-rail span:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  body.utility-page .auth-main::before {
    grid-column: 1 / -1;
    min-height: 0;
    padding-bottom: 14px;
  }
  body.utility-page .auth-card { grid-column: 1 / -1; }
  body.utility-page .nav-inner > .btn-ghost { display: none; }
  .utility-footer-inner { align-items: flex-start; flex-direction: column; }
  .utility-footer nav { flex-wrap: wrap; }
  .error-main > * { grid-column: 1 / -1; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
  }
  .reveal, .rv { opacity: 1 !important; transform: none !important; transition: none !important; }
  [data-scene-steps] { --scene-progress: 1; }
  .vellum-cpu-frame { opacity: .76; transform: none; }
  body.vellum-page .vellum-hero-stage .hero-canvas { opacity: .22; }
  .vellum-stage-receipt { opacity: 1; transform: none; }
  .vellum-state-rail span { color: var(--ink-2); }
  .story-branch-field { display: none !important; }
  .nav-links a::after,
  .enav a::after { transition: none; }
}