/* Shared demo-detail contract
   breadcrumb -> taxonomy -> title -> decision -> enforcement transcript
   -> run locally -> explanation -> optional evidence -> related -> navigation */

:root {
  --demo-pass: #c8f060;
  --demo-warn: #f6b94b;
  --demo-deny: #ff6b6b;
  --demo-terminal: #09090c;
  --demo-terminal-raised: #0f0f13;
  --pass: var(--demo-pass);
  --warn: var(--demo-warn);
  --deny: var(--demo-deny);
  --fail: var(--demo-deny);
}

html,
body {
  overflow-x: clip;
}

/* Lightweight shared shell for newly migrated demo pages. */
body.demo-page {
  --bg: #0c0c0d;
  --surface: #141416;
  --surface2: #1a1a1d;
  --border: #222226;
  --border2: #2e2e34;
  --text: #e8e8ec;
  --muted: #a8a8b8;
  --accent: #c8f060;
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', sans-serif;
  line-height: 1.6;
}

body.demo-page *,
body.demo-page *::before,
body.demo-page *::after {
  box-sizing: border-box;
}

.demo-page .site-nav,
.demo-page > nav:first-of-type {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.15rem 2.5rem;
  border-bottom: 1px solid var(--border);
  background: rgba(12, 12, 13, 0.97);
  backdrop-filter: blur(10px);
}

.demo-page .logo {
  display: inline-flex;
  align-items: center;
  color: var(--text);
  font-family: 'Instrument Serif', serif;
  font-size: 1.45rem;
  text-decoration: none;
}

.demo-page .logo img {
  display: block;
}

.demo-page .nav-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.demo-page .nav-links a {
  color: var(--muted);
  font-size: 0.82rem;
  text-decoration: none;
}

.demo-page .nav-links a:hover,
.demo-page .nav-links a.active {
  color: var(--accent);
}

.demo-page .nav-links .btn-nav-cta {
  background: transparent;
  border: 1px solid var(--action, #ea735e);
  color: #f2a08e;
  padding: 0.45rem 1rem;
  border-radius: 6px;
  font-weight: 500;
  font-family: 'DM Mono', monospace;
  text-decoration: none;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}

.demo-page .nav-links .btn-nav-cta:hover {
  background: var(--action, #ea735e);
  border-color: var(--action, #ea735e);
  color: #0c0c0d;
}

.demo-page .nav-hamburger {
  display: none;
  width: 40px;
  height: 40px;
  padding: 0;
  border: 1px solid var(--border2);
  border-radius: 8px;
  background: transparent;
  color: var(--text);
  cursor: pointer;
}

.demo-page .nav-hamburger span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 4px auto;
  border-radius: 2px;
  background: currentColor;
}

.demo-page .breadcrumb-nav {
  max-width: 920px;
  margin: 1.5rem auto 0;
  padding: 0 2rem;
}

.demo-page .breadcrumb {
  display: flex;
  gap: 0.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
  color: var(--muted);
  font-family: 'DM Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.04em;
}

.demo-page .breadcrumb li:not(:last-child)::after {
  content: ' / ';
  margin-left: 0.5rem;
  color: var(--border2);
}

.demo-page .breadcrumb a {
  color: inherit;
  text-decoration: none;
}

.demo-page main.demo-detail {
  max-width: 920px;
  margin: 0 auto;
  padding: 2.5rem 2rem 5rem;
}

.demo-page .demo-detail h1 {
  margin-top: 0;
  font-family: 'Instrument Serif', serif;
  font-weight: 400;
  letter-spacing: -0.025em;
}

.demo-page .demo-detail h1 em {
  color: var(--accent);
  font-style: italic;
}

.demo-page .lede {
  margin: 0 0 1.35rem;
  color: var(--muted);
}

.demo-page .byline {
  color: var(--muted);
  font-family: 'DM Mono', monospace;
  font-size: 0.68rem;
  letter-spacing: 0.04em;
}

.demo-page .byline a {
  color: inherit;
  text-decoration: none;
}

.demo-page .byline .sep {
  margin: 0 0.5rem;
  color: var(--border2);
}

.demo-page .body {
  color: var(--text);
  font-size: 0.95rem;
  line-height: 1.85;
}

.demo-page .body p {
  color: var(--muted);
}

.demo-page .body code {
  padding: 0.05rem 0.38rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--surface2);
  color: var(--text);
  font-family: 'DM Mono', monospace;
  font-size: 0.82em;
}

.demo-page .body a {
  color: var(--accent);
  text-decoration: none;
}

.demo-page .related-panel {
  margin-top: 3.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

.demo-page .related-panel-label {
  margin-bottom: 1rem;
  color: var(--muted);
  font-family: 'DM Mono', monospace;
  font-size: 0.66rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.demo-page .related-list {
  margin: 0;
  padding: 0;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--border);
  list-style: none;
}

.demo-page .related-list a {
  display: block;
  height: 100%;
  padding: 1.1rem 1.25rem;
  background: var(--surface);
}

.demo-page .rel-title {
  margin-bottom: 0.3rem;
  color: var(--text);
  font-weight: 600;
}

.demo-page .rel-desc {
  margin: 0;
  color: var(--muted);
  font-size: 0.8rem;
  line-height: 1.6;
}

.demo-page .next-bar {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 4rem;
  padding-top: 2.5rem;
  border-top: 1px solid var(--border);
}

.demo-page .next-card {
  display: block;
  padding: 1.25rem 1.4rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
  color: inherit;
  text-decoration: none;
}

.demo-page .next-card:hover {
  border-color: var(--border2);
}

.demo-page .nc-label {
  margin-bottom: 0.45rem;
  color: var(--muted);
  font-family: 'DM Mono', monospace;
  font-size: 0.63rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.demo-page .next-card h4 {
  margin: 0 0 0.35rem;
  color: var(--text);
  font-size: 0.96rem;
}

.demo-page .next-card p {
  margin: 0 0 0.45rem;
  color: var(--muted);
  font-size: 0.8rem;
  line-height: 1.6;
}

.demo-page .nc-arrow {
  color: var(--accent);
  font-family: 'DM Mono', monospace;
  font-size: 0.67rem;
}

.demo-page footer a {
  color: var(--muted);
  text-decoration: none;
}

.demo-page footer a:hover {
  color: var(--text);
}

.demo-detail {
  max-width: 920px;
}

.demo-detail > header {
  position: relative;
  max-width: none;
  margin: 0 calc(50% - 50vw) 4rem;
  padding:
    clamp(2.2rem, 5vw, 3.6rem)
    max(1.25rem, calc((100vw - 920px) / 2 + 2rem))
    clamp(2rem, 4vw, 3rem);
  overflow: hidden;
  border-top: 1px solid #292a2f;
  border-bottom: 1px solid #292a2f;
  background:
    radial-gradient(70% 150% at 78% 0%, rgba(200, 240, 96, 0.065), transparent 58%),
    linear-gradient(145deg, #161719 0%, #111214 68%, #131414 100%);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.018), 0 28px 80px rgba(0, 0, 0, 0.12);
}

.demo-detail .demo-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem 1.4rem;
  margin-bottom: 1.4rem;
}

.demo-detail .demo-meta-item {
  display: inline-flex;
  align-items: baseline;
  gap: 0.5rem;
  font-family: 'DM Mono', monospace;
  font-size: 0.67rem;
  letter-spacing: 0.055em;
  text-transform: uppercase;
}

.demo-detail .demo-meta-label {
  color: #747482;
}

.demo-detail .demo-meta-value {
  color: var(--text);
}

.demo-detail .demo-meta-value.outcome-deny {
  color: var(--demo-deny);
}

.demo-detail .demo-meta-value.forward-looking {
  color: var(--muted);
}

.demo-detail .demo-meta-value.outcome-pass {
  color: var(--demo-pass);
}

.demo-detail .demo-meta-value.outcome-warn {
  color: var(--demo-warn);
}

.demo-detail h1 {
  max-width: 780px;
  font-size: clamp(2.35rem, 6vw, 3.65rem);
  line-height: 1.02;
  margin-bottom: 1.35rem;
}

.demo-detail .lede {
  max-width: 760px;
  border-left: 0;
  padding-left: 0;
  font-size: clamp(1rem, 2.3vw, 1.12rem);
  line-height: 1.75;
}

.demo-detail .byline {
  margin-bottom: 0;
}

.demo-detail .body > h2,
.demo-detail .demo-section > h2 {
  font-family: 'Instrument Serif', serif;
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 400;
  line-height: 1.15;
}

.demo-detail .body > h2 {
  margin: 4.25rem 0 0.9rem;
}

.demo-detail .demo-section {
  margin-top: 4.25rem;
}

.demo-detail .body > .demo-section:first-child {
  margin-top: 0;
}

.demo-detail .demo-section > h2 {
  margin: 0.35rem 0 0.9rem;
}

.demo-detail .section-kicker {
  display: block;
  margin-bottom: 0.55rem;
  color: var(--demo-pass);
  font-family: 'DM Mono', monospace;
  font-size: 0.66rem;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.demo-detail .section-intro {
  max-width: 720px;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.8;
}

.decision-stake {
  position: relative;
  display: grid;
  grid-template-columns: 9.5rem minmax(0, 1fr);
  gap: 1rem 1.5rem;
  align-items: start;
  margin: 0 0 1.5rem;
  padding: 1.05rem 1.25rem 1.05rem 1.45rem;
  border-top: 1px solid rgba(200, 240, 96, 0.2);
  border-bottom: 1px solid rgba(200, 240, 96, 0.2);
  background: linear-gradient(90deg, rgba(200, 240, 96, 0.055), #111113 38%);
}

.decision-stake::before {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 2px;
  background: rgba(200, 240, 96, 0.64);
  content: '';
}

.decision-stake-label {
  color: #b6b6be;
  font-family: 'DM Mono', monospace;
  font-size: 0.66rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.decision-stake p {
  margin: 0;
  color: var(--text);
  font-size: 0.9rem;
  line-height: 1.65;
}

/* Preview treatments: select with ?stake=quiet, ?stake=edge, or ?stake=band. */
.decision-stake--quiet {
  padding: 1rem 0;
  border-color: var(--border);
  background: transparent;
}

.decision-stake--quiet::before {
  display: none;
}

.decision-stake--edge {
  /* Default treatment: retained for explicit preview URLs. */
}

.decision-stake--band {
  padding: 1.2rem 1.25rem;
  border: 1px solid #35353c;
  border-radius: 8px;
  background: #151517;
}

.decision-stake--band::before {
  display: none;
}

.decision-stake--band .decision-stake-label {
  color: #b6b6be;
}

.decision-stake code,
.enforcement-terminal code,
.demo-run code,
.install-cta code {
  font-family: 'DM Mono', monospace;
}

.enforcement-terminal code,
.install-cta code {
  border: 0;
  border-radius: 0;
  background: transparent;
  padding: 0;
}

.enforcement-terminal {
  margin: 1.5rem 0 0;
  overflow: hidden;
  border: 1px solid #2b2b31;
  border-radius: 12px;
  background: var(--demo-terminal);
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.23);
}

.enforcement-terminal-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-height: 46px;
  padding: 0.75rem 1.15rem;
  border-bottom: 1px solid #25252b;
  background: var(--demo-terminal-raised);
}

.terminal-dots {
  display: inline-flex;
  gap: 0.36rem;
}

.terminal-dots span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #41414a;
}

.enforcement-terminal-title {
  color: #b9b9c7;
  font-family: 'DM Mono', monospace;
  font-size: 0.68rem;
  letter-spacing: 0.075em;
  text-transform: uppercase;
}

.demo-detail .enforcement-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: block;
  font-size: inherit;
}

.demo-detail .enforcement-steps .enforcement-step {
  display: grid;
  grid-template-columns: 7.5rem minmax(0, 1fr) auto;
  gap: 1rem 1.35rem;
  align-items: start;
  min-height: 104px;
  padding: 1.2rem 1.3rem;
  border-top: 1px solid #1f1f24;
  opacity: 1;
  transform: translateY(0);
  transition: opacity 220ms ease, transform 220ms ease;
}

.demo-detail .enforcement-steps .enforcement-step:first-child {
  border-top: 0;
}

.enforcement-terminal.is-playing .enforcement-step {
  opacity: 0.11;
  transform: translateY(2px);
}

.enforcement-terminal.is-playing .enforcement-step.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.enforcement-stage {
  color: #8a8a9a;
  font-family: 'DM Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 0.085em;
  line-height: 1.5;
  text-transform: uppercase;
}

.enforcement-stage strong {
  display: block;
  margin-top: 0.22rem;
  color: #dadae2;
  font-size: 0.72rem;
  font-weight: 500;
}

.enforcement-copy p {
  margin: 0;
  color: #b7b7c4;
  font-size: 0.82rem;
  line-height: 1.65;
}

.enforcement-copy strong {
  color: #efeff4;
  font-weight: 500;
}

.trace-code {
  display: block;
  margin-top: 0.55rem;
  color: #f1f1f5;
  font-size: 0.79rem;
  line-height: 1.6;
  overflow-wrap: anywhere;
}

.trace-muted {
  color: #777786;
}

.trace-deny {
  color: var(--demo-deny);
}

.trace-pass {
  color: var(--demo-pass);
}

.verdict-token {
  display: inline-flex;
  align-items: center;
  min-width: 3.6rem;
  justify-content: center;
  margin-top: 0.05rem;
  padding: 0.22rem 0.52rem;
  border: 1px solid;
  border-radius: 999px;
  font-family: 'DM Mono', monospace;
  font-size: 0.6rem;
  letter-spacing: 0.08em;
  line-height: 1.25;
}

.verdict-token.pass {
  border-color: rgba(200, 240, 96, 0.34);
  background: rgba(200, 240, 96, 0.1);
  color: var(--demo-pass);
}

.verdict-token.warn {
  border-color: rgba(246, 185, 75, 0.34);
  background: rgba(246, 185, 75, 0.1);
  color: var(--demo-warn);
}

.verdict-token.deny {
  border-color: rgba(255, 107, 107, 0.38);
  background: rgba(255, 107, 107, 0.1);
  color: var(--demo-deny);
}

.verdict-token.target {
  border-color: rgba(168, 168, 184, 0.28);
  background: rgba(168, 168, 184, 0.07);
  color: #9b9baa;
}

.verdict-token.na {
  border-color: rgba(168, 168, 184, 0.24);
  background: rgba(168, 168, 184, 0.05);
  color: #858590;
}

.enforcement-step.is-unavailable {
  background: rgba(255, 255, 255, 0.012);
}

.enforcement-step.is-absent {
  background: rgba(255, 255, 255, 0.008);
}

.enforcement-step.is-absent .enforcement-copy p,
.enforcement-step.is-absent .trace-code {
  color: #777785;
}

.enforcement-step.is-unavailable .enforcement-copy p,
.enforcement-step.is-unavailable .trace-code {
  color: #777785;
}

.stage-availability {
  display: inline-block;
  margin-top: 0.5rem;
  color: #8d8d98;
  font-family: 'DM Mono', monospace;
  font-size: 0.61rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.forward-note {
  border-color: #2b2b31;
  background: var(--surface);
}

.forward-note strong {
  color: var(--text);
}

.terminal-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 1.15rem;
  border-top: 1px solid #25252b;
  background: var(--demo-terminal-raised);
}

.terminal-replay {
  border: 1px solid #303038;
  border-radius: 6px;
  background: transparent;
  color: #aaaab7;
  padding: 0.45rem 0.8rem;
  font-family: 'DM Mono', monospace;
  font-size: 0.67rem;
  cursor: pointer;
}

.terminal-replay:hover,
.terminal-replay:focus-visible {
  border-color: var(--demo-pass);
  color: var(--demo-pass);
}

.terminal-note {
  color: #6f6f7c;
  font-family: 'DM Mono', monospace;
  font-size: 0.62rem;
  letter-spacing: 0.03em;
}

.demo-run {
  margin-top: 1.5rem;
  padding: 1.4rem 1.5rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
}

.demo-run h3 {
  margin: 0 0 0.45rem;
  color: var(--text);
  font-size: 1rem;
}

.demo-run p {
  margin: 0 0 1rem;
  color: var(--muted);
  font-size: 0.86rem;
}

.demo-run pre {
  margin: 0;
  padding: 1rem 1.1rem;
  overflow: visible;
  border: 1px solid #25252b;
  border-radius: 7px;
  background: var(--demo-terminal);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.demo-run pre code {
  color: #e2e2e9;
  font-size: 0.78rem;
  line-height: 1.7;
}

.demo-explanation {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin-top: 1.5rem;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--border);
}

.demo-explanation-item {
  padding: 1.15rem 1.2rem;
  background: var(--surface);
}

.demo-explanation-item strong {
  display: block;
  margin-bottom: 0.4rem;
  color: var(--text);
  font-size: 0.84rem;
  font-weight: 600;
}

.demo-explanation-item p {
  margin: 0;
  color: var(--muted);
  font-size: 0.8rem;
  line-height: 1.65;
}

.install-cta {
  margin-top: 4rem;
  padding: clamp(1.5rem, 4vw, 2.25rem);
  border: 1px solid rgba(200, 240, 96, 0.24);
  border-radius: 12px;
  background: linear-gradient(115deg, rgba(200, 240, 96, 0.045), #161719 42%, #111214);
}

.install-cta h2 {
  margin: 0 0 0.55rem !important;
  font-family: 'Instrument Serif', serif !important;
  font-size: clamp(1.8rem, 4vw, 2.35rem) !important;
  font-weight: 400 !important;
}

.install-cta > p {
  max-width: 580px;
  margin: 0 0 1.3rem;
  color: var(--muted);
  font-size: 0.91rem;
}

.install-command {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.82rem 0.95rem;
  border: 1px solid #303039;
  border-radius: 8px;
  background: var(--demo-terminal);
}

.install-command code {
  color: var(--text);
  font-size: 0.82rem;
  overflow-wrap: anywhere;
}

.install-copy {
  flex: 0 0 auto;
  border: 1px solid #3a3a44;
  border-radius: 5px;
  background: transparent;
  color: #a9a9b7;
  padding: 0.35rem 0.65rem;
  font-family: 'DM Mono', monospace;
  font-size: 0.65rem;
  cursor: pointer;
}

.install-copy:hover,
.install-copy:focus-visible,
.install-copy.copied {
  border-color: var(--demo-pass);
  color: var(--demo-pass);
}

.install-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem 1.3rem;
  margin-top: 1.1rem;
}

.demo-detail .install-links a {
  border-bottom: 0;
  color: var(--text);
  font-size: 0.82rem;
}

.demo-detail .install-links a::after {
  content: ' \2192';
  color: var(--demo-pass);
}

.install-meta {
  display: block;
  margin-top: 1.15rem;
  color: #757582;
  font-family: 'DM Mono', monospace;
  font-size: 0.64rem;
  letter-spacing: 0.04em;
}

.demo-video {
  margin-top: 3rem;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.demo-video summary {
  padding: 1rem 0;
  color: var(--muted);
  font-size: 0.82rem;
  cursor: pointer;
}

.demo-video-frame {
  position: relative;
  max-width: 720px;
  aspect-ratio: 16 / 9;
  margin-bottom: 1rem;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 8px;
}

.demo-video-frame iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.demo-faq {
  margin-top: 3.5rem;
}

.demo-faq h2 {
  margin-top: 0 !important;
}

.demo-faq details {
  border-top: 1px solid var(--border);
}

.demo-faq details:last-child {
  border-bottom: 1px solid var(--border);
}

.demo-faq summary {
  padding: 1rem 2rem 1rem 0;
  color: var(--text);
  font-size: 0.9rem;
  cursor: pointer;
}

.demo-faq details p {
  max-width: 720px;
  margin: 0 0 1.2rem;
  color: var(--muted);
  font-size: 0.85rem;
  line-height: 1.7;
}

.related-panel.related-panel--compact {
  margin-top: 3.5rem;
  padding-top: 1.5rem;
}

.related-panel--compact .related-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
}

@media (max-width: 720px) {
  .demo-detail > header {
    margin-bottom: 3rem;
    padding-top: 1.8rem;
    padding-bottom: 1.9rem;
  }

  .demo-detail h1 {
    font-size: clamp(2.15rem, 12vw, 3.15rem);
  }

  .decision-stake,
  .demo-detail .enforcement-steps .enforcement-step {
    grid-template-columns: 1fr;
  }

  .demo-detail .enforcement-steps .enforcement-step {
    min-height: 0;
    gap: 0.7rem;
    padding: 1.1rem;
  }

  .enforcement-stage strong {
    display: inline;
    margin-left: 0.35rem;
  }

  .verdict-token {
    justify-self: start;
  }

  .terminal-controls,
  .install-command {
    align-items: flex-start;
    flex-direction: column;
  }

  .demo-explanation,
  .related-panel--compact .related-list {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 900px) {
  .demo-page .site-nav,
  .demo-page > nav:first-of-type {
    padding: 1rem 1.25rem;
  }

  .demo-page .nav-hamburger {
    display: block;
  }

  .demo-page .nav-links {
    position: absolute;
    top: 100%;
    right: 0;
    left: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.5rem 1.25rem 1.25rem;
    border-bottom: 1px solid var(--border);
    background: rgba(12, 12, 13, 0.99);
  }

  .demo-page .nav-links.open {
    display: flex;
  }

  .demo-page .nav-links a:not(.btn-nav-cta) {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border);
    color: var(--text);
  }

  .demo-page .nav-links .btn-nav-cta {
    margin-top: 0.9rem;
    text-align: center;
  }

  .demo-page .breadcrumb-nav {
    padding: 0 1.25rem;
  }

  .demo-page main.demo-detail {
    padding: 2rem 1.25rem 4rem;
  }
}

@media (max-width: 640px) {
  .demo-page .next-bar {
    grid-template-columns: 1fr;
  }

}

@media (prefers-reduced-motion: reduce) {
  .enforcement-step {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
}

/* Demo index: the shared demo grammar at collection scale. */
.demo-hub-main {
  padding-bottom: 6rem;
}

.demo-hub-hero {
  margin-top: 1.5rem;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: #111113;
}

.demo-hub-hero-inner,
.demo-hub-content {
  width: min(1040px, calc(100% - 4rem));
  margin: 0 auto;
}

.demo-hub-hero-inner {
  padding: clamp(3.5rem, 8vw, 6.5rem) 0;
  text-align: center;
}

.demo-hub-eyebrow,
.hub-section-label,
.hub-card-kicker,
.hub-card-meta,
.hub-impact-label {
  font-family: 'DM Mono', monospace;
  text-transform: uppercase;
}

.demo-hub-eyebrow {
  margin-bottom: 1rem;
  color: var(--muted);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
}

.demo-hub-hero h1 {
  max-width: 930px;
  margin: 0 auto;
  font-family: 'Instrument Serif', serif;
  font-size: clamp(2.8rem, 7vw, 5rem);
  font-weight: 400;
  letter-spacing: -0.035em;
  line-height: 0.98;
}

.demo-hub-hero h1 em {
  color: var(--demo-pass);
  font-style: italic;
}

.demo-hub-hero .lede {
  max-width: 720px;
  margin: 1.5rem auto 0;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.8;
}

.demo-hub-content {
  padding-top: 6rem;
}

.hub-section + .hub-section {
  margin-top: 7rem;
}

.hub-section-head {
  max-width: 760px;
  margin: 0 auto 2.5rem;
  text-align: center;
}

.hub-section-label {
  color: var(--muted);
  font-size: 0.67rem;
  letter-spacing: 0.1em;
  margin-bottom: 0.85rem;
}

.hub-section-head h2 {
  margin: 0;
  font-family: 'Instrument Serif', serif;
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.05;
}

.hub-proof-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
}

.hub-card {
  display: flex;
  min-height: 25rem;
  flex-direction: column;
  padding: clamp(1.75rem, 3.5vw, 2.4rem);
  border: 1px solid #29292f;
  border-radius: 12px;
  background: #131315;
  color: var(--text);
  text-decoration: none;
  transition: border-color 160ms ease, transform 160ms ease, background 160ms ease;
}

.hub-card:hover {
  border-color: #45454d;
  background: #151517;
  transform: translateY(-2px);
}

.hub-card--target {
  min-height: 0;
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(260px, 0.75fr);
  gap: 2rem;
  border-style: dashed;
  background: #101012;
}

.hub-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 2.25rem;
}

.hub-card-kicker,
.hub-card-meta {
  color: #92929e;
  font-size: 0.64rem;
  letter-spacing: 0.075em;
}

.hub-outcome {
  color: #aaaab5;
  font-weight: 500;
}

.hub-outcome--pass,
.hub-outcome--warn,
.hub-outcome--deny {
  color: inherit;
}

.hub-pass-word,
.hub-warn-word,
.hub-deny-word {
  color: var(--demo-pass);
}

.hub-card h3 {
  max-width: 27rem;
  margin: 0 0 0.8rem;
  font-family: 'Instrument Serif', serif;
  font-size: clamp(1.9rem, 3.3vw, 2.55rem);
  font-weight: 400;
  letter-spacing: -0.025em;
  line-height: 1.05;
}

.hub-card p {
  max-width: 34rem;
  margin: 0;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.75;
}

.hub-card .hub-impact {
  margin-top: auto;
  padding-top: 1.4rem;
  border-top: 1px solid #26262b;
}

.hub-impact-label {
  display: block;
  margin-bottom: 0.45rem;
  color: #888894;
  font-size: 0.61rem;
  letter-spacing: 0.08em;
}

.hub-impact strong {
  color: var(--text);
  font-size: 0.86rem;
  font-weight: 500;
  line-height: 1.55;
}

.hub-card-cta {
  display: inline-block;
  margin-top: 1.25rem;
  color: #b8b8c2;
  font-family: 'DM Mono', monospace;
  font-size: 0.7rem;
}

.hub-card:hover .hub-card-cta {
  color: var(--accent);
}

.hub-target-requirements {
  display: grid;
  gap: 0.55rem;
  align-self: center;
}

.hub-target-requirements span {
  padding: 0.7rem 0.8rem;
  border: 1px solid #29292f;
  border-radius: 6px;
  color: #9a9aa5;
  font-family: 'DM Mono', monospace;
  font-size: 0.68rem;
}

.hub-support-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.8rem;
}

.hub-support-card {
  display: block;
  padding: 1.2rem;
  border: 1px solid #26262b;
  border-radius: 9px;
  background: #121214;
  color: var(--text);
  text-decoration: none;
}

.hub-support-card:hover {
  border-color: #414148;
}

.hub-support-card span {
  display: block;
  margin-bottom: 0.55rem;
  color: #858590;
  font-family: 'DM Mono', monospace;
  font-size: 0.61rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.hub-support-card strong {
  display: block;
  margin-bottom: 0.4rem;
  font-size: 0.9rem;
  font-weight: 600;
}

.hub-support-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.6;
}

.hub-run {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1.5rem;
  border: 1px solid #2b2b30;
  border-radius: 10px;
  background: #121214;
}

.hub-run--featured {
  margin-top: 6.5rem;
  padding: clamp(1.5rem, 4vw, 2.25rem);
  border-color: rgba(200, 240, 96, 0.22);
  background: linear-gradient(100deg, rgba(200, 240, 96, 0.045), #131316 40%, #101012);
}

.hub-run--featured .hub-section-label {
  margin-bottom: 0.75rem;
  color: #aaaab5;
}

.hub-run--featured {
  flex-direction: column;
  justify-content: center;
  text-align: center;
}

.hub-run h2 {
  margin: 0 0 0.35rem;
  font-size: 1rem;
  font-weight: 600;
}

.hub-run p {
  margin: 0;
  color: var(--muted);
  font-size: 0.82rem;
}

.hub-run code {
  padding: 0.7rem 0.85rem;
  border: 1px solid #303038;
  border-radius: 6px;
  background: #09090c;
  color: var(--text);
  font-family: 'DM Mono', monospace;
  font-size: 0.72rem;
  overflow-wrap: anywhere;
}

.hub-run-command {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  padding: 0.48rem 0.55rem 0.48rem 0.9rem;
  border: 1px solid rgba(200, 240, 96, 0.24);
  border-radius: 7px;
  background: #09090c;
}

.hub-run-command code {
  padding: 0;
  border: 0;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.hub-image {
  max-width: 720px;
  margin: 3rem auto 0;
  text-align: center;
}

.hub-image img {
  display: block;
  width: 100%;
  height: clamp(180px, 22vw, 250px);
  object-fit: cover;
  object-position: center 42%;
  filter: contrast(0.94) brightness(0.72);
  border: 1px solid #29292f;
  border-radius: 10px;
}

.hub-image figcaption {
  max-width: 680px;
  margin: 0.8rem auto 0;
  color: var(--muted);
  font-size: 0.8rem;
  line-height: 1.6;
}

.hub-section + .hub-image {
  margin-top: 3.5rem;
}

@media (max-width: 760px) {
  .demo-hub-hero-inner,
  .demo-hub-content {
    width: min(100% - 2.5rem, 1040px);
  }

  .hub-section-head,
  .hub-proof-grid,
  .hub-card--target,
  .hub-support-grid {
    grid-template-columns: 1fr;
  }

  .hub-card--target {
    grid-column: auto;
  }

  .hub-card {
    min-height: 0;
  }

  .hub-card .hub-impact {
    margin-top: 2rem;
  }

  .hub-run {
    align-items: flex-start;
    flex-direction: column;
  }

  .hub-run-command {
    width: 100%;
    justify-content: space-between;
  }
}