/*
 * VaultProof homepage — Earth-based API-key risk and protection presentation.
 * These unlayered, route-scoped rules own the downstream proof, setup,
 * explainer, and closing visual treatment.
 */

:root {
  /* Dashboard-aligned interface palette for the Earth journey and proof surfaces. */
  --city-graphite: #0b111b;
  --city-graphite-deep: #070a10;
  --city-graphite-soft: #171d26;
  --city-cork-dark: #0e1622;
  --city-clay: #57dce9;
  --city-ivory: #f4f8fc;
  --city-parchment: #c9d5e1;
  --city-mist: #9aa6b5;
  --city-state-strong: #81e8f0;
  --city-line: rgba(226, 232, 240, 0.15);
  --city-line-strong: rgba(87, 220, 233, 0.3);
  --city-frame-line: rgba(87, 220, 233, 0.25);
  --city-frame-line-strong: rgba(87, 220, 233, 0.48);
  --city-panel-surface-soft: rgba(7, 10, 16, 0.88);
  --city-caption-surface: rgba(7, 10, 16, 0.9);
  --city-accent-wash: rgba(87, 220, 233, 0.08);
  --city-ivory-rule: rgba(237, 243, 247, 0.2);
  --city-ink-rule-soft: rgba(7, 10, 16, 0.2);
  --city-ink-rule: rgba(7, 10, 16, 0.22);
  --city-ink-rule-strong: rgba(7, 10, 16, 0.32);
  --city-shadow-action: rgba(2, 5, 10, 0.34);
  --city-evidence-paper: #edf3f7;
  --city-evidence-copy: #3b4b5a;
  --city-evidence-state: #08788e;
  --city-evidence-link: #075d70;
  --city-evidence-link-hover: #043e4a;
  --city-evidence-datum: #314252;
  --city-evidence-label: #607080;
  --city-pure-white: #ffffff;
  --city-print-paper: #ffffff;
  --city-print-ink: #171713;
  --city-print-rule: #7d756a;
  --city-content: 1180px;
  --city-reading: 690px;
  --city-radius: 4px;
  --city-font-display: "Space Grotesk", "Avenir Next", Avenir, system-ui, sans-serif;
  --city-font-body: "Manrope", "Avenir Next", Avenir, system-ui, -apple-system, sans-serif;
  --city-type-micro: 0.75rem;
  color-scheme: dark;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  background: var(--city-graphite-deep);
}

html:focus-within {
  scroll-behavior: smooth;
}

body.city-page {
  min-width: 320px;
  min-height: 100%;
  margin: 0;
  overflow-x: clip;
  background: var(--city-graphite);
  color: var(--city-ivory);
  font-family: var(--city-font-body);
  font-optical-sizing: auto;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.city-page img,
.city-page picture,
.city-page video {
  display: block;
  max-width: 100%;
}

.city-page button,
.city-page a {
  -webkit-tap-highlight-color: transparent;
}

.city-page a {
  color: inherit;
}

.city-page ::selection {
  background: var(--city-clay);
  color: var(--city-graphite-deep);
}

.city-page [hidden] {
  display: none !important;
}

.city-skip-link {
  position: fixed;
  top: 10px;
  left: 12px;
  z-index: 1200;
  padding: 11px 15px;
  border: 2px solid var(--city-state-strong);
  border-radius: 7px;
  background: var(--city-ivory);
  color: var(--city-graphite-deep);
  font-size: 0.875rem;
  font-weight: 800;
  text-decoration: none;
  transform: translateY(-160%);
  transition: transform 160ms ease;
}

.city-skip-link:focus {
  transform: translateY(0);
}

/* Primary actions -------------------------------------------------------- */

.city-button--primary,
.city-closing__actions a:first-child {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 12px 17px;
  border: 1px solid var(--city-clay);
  border-radius: 7px;
  background: var(--city-clay);
  color: var(--city-graphite-deep);
  font-size: 0.84rem;
  font-weight: 800;
  line-height: 1.15;
  text-align: center;
  text-decoration: none;
  transition: border-color 150ms ease, background-color 150ms ease, box-shadow 150ms ease, transform 150ms ease;
}

.city-button--primary:hover,
.city-closing__actions a:first-child:hover {
  border-color: var(--city-state-strong);
  background: var(--city-state-strong);
  box-shadow: 0 7px 18px var(--city-shadow-action);
  transform: translateY(-1px);
}

.city-button--primary:active,
.city-closing__actions a:first-child:active {
  box-shadow: none;
  transform: translate3d(0, 1px, 0);
}

/* Compact proof acts ---------------------------------------------------- */

.city-proof,
.city-context,
.city-explainer,
.city-steps,
.city-mcp,
.city-faq,
.city-closing,
.city-footer {
  position: relative;
  z-index: 80;
}

.city-proof {
  overflow-x: clip;
  border-top: 1px solid var(--city-ink-rule-soft);
  background: var(--city-evidence-paper);
  color: var(--city-graphite-deep);
}

.city-proof__inner,
.city-context__inner,
.city-explainer__inner,
.city-steps__inner,
.city-mcp__inner,
.city-faq__inner,
.city-closing__inner,
.city-footer__inner {
  width: min(var(--city-content), calc(100% - 40px));
  margin-inline: auto;
}

.city-proof__inner {
  padding-block: clamp(108px, 8vw, 136px) clamp(80px, 6vw, 98px);
}

.city-steps__inner {
  padding-block: clamp(72px, 5vw, 86px);
}

/* Scanning and protection context ------------------------------------- */

.city-context {
  overflow-x: clip;
  border-top: 1px solid var(--city-ink-rule-soft);
  background: var(--city-evidence-paper);
  color: var(--city-graphite-deep);
}

.city-context__inner {
  padding-block: clamp(82px, 7vw, 112px);
}

.city-context__heading {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(360px, 0.9fr);
  align-items: end;
  gap: clamp(34px, 6vw, 78px);
}

.city-context__heading > * {
  margin: 0;
}

.city-context__heading h2,
.city-faq__inner > h2 {
  color: var(--city-graphite-deep);
  font-family: var(--city-font-display);
  font-size: clamp(2.55rem, 4.1vw, 4.6rem);
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 0.92;
  text-wrap: balance;
}

.city-context__heading p {
  max-width: 58ch;
  color: var(--city-evidence-copy);
  font-size: clamp(1rem, 1.25vw, 1.1rem);
  line-height: 1.65;
}

.city-context__comparison {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: clamp(46px, 6vw, 72px);
  border-top: 1px solid var(--city-ink-rule-strong);
  border-bottom: 1px solid var(--city-ink-rule-strong);
}

.city-context__comparison > div {
  padding: clamp(26px, 3vw, 38px) clamp(26px, 4vw, 52px) clamp(30px, 4vw, 46px) 0;
}

.city-context__comparison > div + div {
  padding-right: 0;
  padding-left: clamp(26px, 4vw, 52px);
  border-left: 1px solid var(--city-ink-rule);
}

.city-context__comparison strong {
  color: var(--city-evidence-state);
  font-size: var(--city-type-micro);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.city-context__comparison p {
  max-width: 46ch;
  margin: 14px 0 18px;
  color: var(--city-evidence-copy);
  line-height: 1.6;
}

.city-context__comparison a,
.city-faq__item a {
  color: var(--city-evidence-link);
  font-size: 0.84rem;
  font-weight: 800;
  text-underline-offset: 4px;
}

.city-context__comparison a:hover,
.city-faq__item a:hover {
  color: var(--city-evidence-link-hover);
}

/* Product explainer ---------------------------------------------------- */

.city-explainer {
  border-top: 1px solid var(--city-frame-line-strong);
  background: var(--city-graphite-deep);
  color: var(--city-ivory);
}

.city-explainer__inner {
  display: grid;
  grid-template-columns: minmax(250px, 0.38fr) minmax(0, 1fr);
  align-items: start;
  padding-block: clamp(88px, 7vw, 120px);
  gap: clamp(38px, 6vw, 82px);
}

.city-explainer__copy {
  padding-top: 4px;
}

.city-explainer__copy h2 {
  max-width: 9ch;
  margin: 0;
  color: var(--city-ivory);
  font-family: var(--city-font-display);
  font-size: clamp(2.4rem, 4vw, 4.35rem);
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 0.94;
  text-wrap: balance;
}

.city-explainer__copy p {
  max-width: 36ch;
  margin: 24px 0 0;
  color: var(--city-parchment);
  font-size: clamp(1rem, 1.2vw, 1.08rem);
  line-height: 1.65;
}

.city-explainer__media {
  min-width: 0;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--city-frame-line-strong);
  border-radius: var(--city-radius);
  background: var(--city-pure-white);
}

.city-explainer__media iframe {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  border: 0;
  background: var(--city-pure-white);
}

.city-explainer__media iframe:focus-visible {
  outline: 3px solid var(--city-state-strong);
  outline-offset: -4px;
}

.city-explainer__media figcaption {
  margin: 0;
  padding: 12px 14px;
  border-top: 1px solid var(--city-frame-line-strong);
  background: var(--city-graphite);
  color: var(--city-parchment);
  font-size: 0.78rem;
  line-height: 1.45;
}

/* Product proof -------------------------------------------------------- */

.city-proof__intro {
  display: grid;
  grid-template-columns: minmax(340px, 0.78fr) minmax(520px, 1.22fr);
  align-items: center;
  margin-bottom: clamp(54px, 7vw, 88px);
  gap: clamp(40px, 6vw, 82px);
}

.city-proof__intro .city-section-heading {
  display: block;
  margin: 0;
}

.city-proof__intro .city-section-heading > * {
  margin-inline: 0;
}

.city-proof__intro .city-section-heading h2 {
  margin-top: 0;
}

.city-proof__intro .city-section-heading > p:last-child {
  margin-top: 22px;
}

.city-proof__media {
  position: relative;
  min-width: 0;
  margin: 0;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--city-frame-line-strong);
  border-radius: var(--city-radius);
  background: var(--city-graphite-deep);
  box-shadow: none;
}

.city-proof__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.city-media-plane {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.city-media-earth {
  position: absolute;
  inset: -2.5%;
  opacity: 1;
  transform: translate3d(-1.3%, 0, 0) scale(1.035) rotate(-0.35deg);
  transform-origin: center;
  transition: opacity 420ms ease;
  will-change: transform;
}

.city-media-earth img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.city-media-earth picture {
  width: 100%;
  height: 100%;
}

.city-media-motion {
  position: absolute;
  inset: 0;
  z-index: 2;
  width: 100%;
  height: 100%;
  opacity: 0.94;
  pointer-events: none;
  transition: opacity 300ms ease;
}

.city-media-diagram {
  isolation: isolate;
}

.city-media-diagram marker path {
  fill: var(--city-state-strong);
}

.city-media-diagram__route {
  fill: none;
  stroke: var(--city-state-strong);
  stroke-width: 2.4;
  vector-effect: non-scaling-stroke;
}

.city-media-diagram__route--custody {
  stroke-dasharray: 7 7;
}

.city-media-diagram__route--credential {
  stroke: var(--city-pure-white);
  stroke-width: 4;
}

.city-media-diagram__route--response {
  stroke: var(--city-pure-white);
  stroke-dasharray: 9 7;
}

.city-media-diagram__route--activity {
  stroke-dasharray: 4 7;
}

.city-media-diagram__boundary {
  fill: rgb(3 8 17 / 0.28);
  stroke: var(--city-state-strong);
  stroke-width: 2;
  vector-effect: non-scaling-stroke;
}

.city-media-diagram__node rect,
.city-media-diagram__activity rect {
  fill: rgb(3 8 17 / 0.88);
  stroke: rgb(129 232 240 / 0.72);
  stroke-width: 1.4;
  vector-effect: non-scaling-stroke;
}

.city-media-diagram__node--proxy rect {
  fill: rgb(7 10 16 / 0.96);
  stroke: var(--city-pure-white);
}

.city-media-diagram text {
  fill: var(--city-ivory);
  font-family: var(--city-font-body);
  font-size: 22px;
  font-weight: 800;
  letter-spacing: 0.055em;
}

.city-media-diagram .city-media-diagram__detail,
.city-media-diagram .city-media-diagram__credential-detail {
  fill: var(--city-parchment);
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.city-media-diagram__boundary-label,
.city-media-diagram__activity-title {
  fill: var(--city-state-strong) !important;
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace !important;
  font-size: 16px !important;
  font-weight: 800 !important;
  letter-spacing: 0.075em !important;
}

.city-media-diagram__credential-label,
.city-media-diagram__route-label {
  fill: var(--city-pure-white) !important;
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace !important;
  font-size: 15px !important;
  font-weight: 700 !important;
  letter-spacing: 0.025em !important;
}

.city-media-diagram__activity-record {
  fill: var(--city-pure-white) !important;
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace !important;
  font-size: 15px !important;
  font-weight: 700 !important;
  letter-spacing: 0 !important;
}

.city-media-compact-labels {
  display: none;
}

.city-proof__media.is-data-saving .city-media-motion__packet,
.city-closing__figure.is-data-saving .city-media-motion__packet {
  display: none;
}

.city-media-motion__packet {
  fill: var(--city-pure-white);
  stroke: var(--city-graphite-deep);
  stroke-width: 2.5;
  vector-effect: non-scaling-stroke;
}

.city-media-motion__packet--secondary {
  fill: var(--city-state-strong);
}

.city-proof__media.is-motion-ready,
.city-closing__figure.is-motion-ready {
  --city-media-pointer-x: 0px;
  --city-media-pointer-y: 0px;
  --city-media-scroll-y: 0px;
  --city-media-rotate-x: 0deg;
  --city-media-rotate-y: 0deg;
  --city-media-scale: 1.055;
  perspective: 1100px;
  transition: border-color 500ms cubic-bezier(0.16, 1, 0.3, 1);
}

.city-proof__media.is-motion-ready .city-media-earth img,
.city-closing__figure.is-motion-ready .city-media-earth img {
  transform: translate3d(
      var(--city-media-pointer-x),
      calc(var(--city-media-pointer-y) + var(--city-media-scroll-y)),
      0
    )
    rotateX(var(--city-media-rotate-x))
    rotateY(var(--city-media-rotate-y))
    scale(var(--city-media-scale));
  transform-origin: center;
  transition: transform 560ms cubic-bezier(0.16, 1, 0.3, 1);
  will-change: transform;
}

.city-proof__media.is-motion-ready .city-media-earth,
.city-closing__figure.is-motion-ready .city-media-earth {
  animation: city-earth-rotation 24s ease-in-out infinite alternate;
  animation-play-state: paused;
}

.city-closing__figure.is-motion-ready .city-media-earth {
  animation-direction: alternate-reverse;
  animation-duration: 28s;
}

.city-proof__media.is-motion-ready.is-in-view,
.city-closing__figure.is-motion-ready.is-in-view {
  --city-media-scale: 1.035;
  border-color: var(--city-state-strong);
}

.city-proof__media.is-motion-ready.is-in-view .city-media-earth,
.city-closing__figure.is-motion-ready.is-in-view .city-media-earth {
  animation-play-state: running;
}

@keyframes city-earth-rotation {
  0% { transform: translate3d(-1.3%, 0.2%, 0) scale(1.035) rotate(-0.35deg); }
  50% { transform: translate3d(0.2%, -0.25%, 0) scale(1.047) rotate(0.08deg); }
  100% { transform: translate3d(1.35%, 0.1%, 0) scale(1.035) rotate(0.4deg); }
}

@keyframes city-earth-rotation-mobile {
  0% { transform: translate3d(-0.7%, 0.1%, 0) scale(1.018) rotate(-0.18deg); }
  50% { transform: translate3d(0.1%, -0.12%, 0) scale(1.024) rotate(0.04deg); }
  100% { transform: translate3d(0.72%, 0.08%, 0) scale(1.018) rotate(0.2deg); }
}

.city-proof__media figcaption {
  position: absolute;
  z-index: 4;
  right: 12px;
  bottom: 12px;
  left: 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-width: 0;
  padding: 10px 12px;
  border: 1px solid var(--city-frame-line-strong);
  border-radius: 2px;
  background: var(--city-panel-surface-soft);
  color: var(--city-ivory);
  gap: 12px;
}

.city-proof__media figcaption span {
  flex: 0 0 auto;
  color: var(--city-state-strong);
  font-family: var(--city-font-body);
  font-size: var(--city-type-micro);
  font-weight: 800;
  letter-spacing: 0.1em;
  line-height: 1.3;
  text-transform: uppercase;
}

.city-proof__media figcaption strong {
  min-width: 0;
  color: var(--city-ivory);
  font-size: 0.78rem;
  line-height: 1.3;
  text-align: right;
}

.city-section-heading {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(280px, 0.75fr);
  align-items: end;
  margin-bottom: clamp(30px, 4vw, 48px);
  gap: 28px;
}

.city-section-heading > * {
  margin: 0;
}

.city-section-heading h2 {
  grid-column: 1;
  grid-row: 1;
}

.city-section-heading > p:last-child {
  grid-column: 2;
  grid-row: 1;
}

.city-section-heading h2,
.city-closing__copy h2 {
  margin: 0;
  color: var(--city-ivory);
  font-family: var(--city-font-display);
  font-size: clamp(2.55rem, 4.1vw, 4.6rem);
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 0.9;
  text-wrap: balance;
}

.city-proof .city-section-heading h2,
.city-proof .city-ledger__row h3 {
  color: var(--city-graphite-deep);
}

.city-proof .city-section-heading > p:last-child,
.city-proof .city-ledger__row div p {
  color: var(--city-evidence-copy);
}

.city-section-heading > p:last-child,
.city-closing__copy > p {
  max-width: 55ch;
  color: var(--city-parchment);
  font-size: clamp(1rem, 1.25vw, 1.1rem);
  line-height: 1.65;
}

.city-ledger {
  border-top: 1px solid var(--city-ink-rule-strong);
}

.city-ledger__row {
  --city-ledger-entry-x: 100vw;

  display: grid;
  grid-template-columns: 120px minmax(300px, 1fr) minmax(180px, 0.42fr) auto;
  align-items: center;
  padding: clamp(24px, 3vw, 38px) 0;
  border-bottom: 1px solid var(--city-ink-rule);
  clip-path: inset(0);
  gap: clamp(20px, 3vw, 42px);
  opacity: 1;
  transform: translate3d(0, 0, 0);
  transition: opacity 1.15s cubic-bezier(0.16, 1, 0.3, 1), transform 1.15s cubic-bezier(0.16, 1, 0.3, 1), clip-path 1.15s cubic-bezier(0.16, 1, 0.3, 1);
}

.city-ledger__row[data-ledger-reveal="left"] {
  --city-ledger-entry-x: -100vw;
}

.has-city-js .city-ledger.is-ledger-pending .city-ledger__row {
  opacity: 0.28;
  transform: translate3d(var(--city-ledger-entry-x), 0, 0);
}

.has-city-js .city-ledger.is-ledger-pending .city-ledger__row[data-ledger-reveal="right"] {
  clip-path: inset(0 0 0 8%);
}

.has-city-js .city-ledger.is-ledger-pending .city-ledger__row[data-ledger-reveal="left"] {
  clip-path: inset(0 8% 0 0);
}

.city-ledger__row > * {
  margin: 0;
}

.city-ledger__signal {
  display: grid;
  align-content: center;
  justify-items: start;
  gap: 14px;
}

.city-ledger__state {
  color: var(--city-evidence-state);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.city-proof .city-ledger__signal .city-ledger__state {
  margin: 0;
  color: var(--city-evidence-state);
}

.city-motion-icon {
  display: grid;
  width: 68px;
  aspect-ratio: 1;
  border: 1px solid var(--city-ink-rule);
  border-radius: 4px;
  background: var(--city-evidence-paper);
  place-items: center;
  transition: background-color 180ms ease, border-color 180ms ease;
}

.city-pictogram {
  display: block;
  width: 48px;
  height: 48px;
  overflow: visible;
}

.city-pictogram__geometry,
.city-pictogram__signal {
  fill: none;
  stroke-linecap: square;
  stroke-linejoin: miter;
  stroke-width: 2;
}

.city-pictogram__geometry {
  stroke: var(--city-graphite-deep);
}

.city-pictogram__signal {
  stroke: var(--city-clay);
  stroke-dasharray: 80;
  stroke-dashoffset: 0;
}

.city-ledger__row.is-icon-active .city-motion-icon,
.city-step.is-icon-active .city-motion-icon {
  background: #f4f8fc;
  border-color: rgb(87 220 233 / 0.64);
}

.city-step.is-icon-active .city-pictogram__signal {
  animation: city-pictogram-draw 780ms cubic-bezier(0.22, 1, 0.36, 1) both;
}

.city-ledger__row.is-icon-active .city-pictogram__geometry {
  animation: city-pictogram-geometry-draw 900ms cubic-bezier(0.16, 1, 0.3, 1) 320ms both;
}

.city-ledger__row.is-icon-active .city-pictogram--application .city-pictogram__signal {
  animation: city-application-request 780ms cubic-bezier(0.16, 1, 0.3, 1) 470ms both;
}

.city-ledger__row.is-icon-active .city-pictogram--custody rect:nth-of-type(1) {
  animation: city-pictogram-geometry-draw 900ms cubic-bezier(0.16, 1, 0.3, 1) 320ms both, city-custody-share-left 760ms cubic-bezier(0.16, 1, 0.3, 1) 420ms both;
  transform-box: fill-box;
  transform-origin: center;
}

.city-ledger__row.is-icon-active .city-pictogram--custody rect:nth-of-type(2) {
  animation: city-pictogram-geometry-draw 900ms cubic-bezier(0.16, 1, 0.3, 1) 320ms both, city-custody-share-right 760ms cubic-bezier(0.16, 1, 0.3, 1) 420ms both;
  transform-box: fill-box;
  transform-origin: center;
}

.city-ledger__row.is-icon-active .city-pictogram--custody .city-pictogram__signal {
  animation: city-custody-bridge 720ms cubic-bezier(0.16, 1, 0.3, 1) 520ms both;
}

.city-ledger__row.is-icon-active .city-pictogram--runtime .city-pictogram__geometry:nth-child(2) {
  animation-delay: 470ms;
}

.city-ledger__row.is-icon-active .city-pictogram--runtime .city-pictogram__signal {
  animation: city-runtime-request 780ms cubic-bezier(0.16, 1, 0.3, 1) 470ms both;
}

@keyframes city-pictogram-draw {
  from { stroke-dashoffset: 80; }
  to { stroke-dashoffset: 0; }
}

@keyframes city-pictogram-geometry-draw {
  from {
    stroke-dasharray: 160;
    stroke-dashoffset: 160;
  }
  to {
    stroke-dasharray: 160;
    stroke-dashoffset: 0;
  }
}

@keyframes city-application-request {
  from {
    opacity: 0.32;
    stroke-dashoffset: 80;
    transform: translateX(-4px);
  }
  to {
    opacity: 1;
    stroke-dashoffset: 0;
    transform: translateX(0);
  }
}

@keyframes city-custody-share-left {
  from { transform: translateX(6px); }
  to { transform: translateX(0); }
}

@keyframes city-custody-share-right {
  from { transform: translateX(-6px); }
  to { transform: translateX(0); }
}

@keyframes city-custody-bridge {
  from {
    opacity: 0.32;
    stroke-dashoffset: 80;
    transform: scaleX(0.2);
  }
  to {
    opacity: 1;
    stroke-dashoffset: 0;
    transform: scaleX(1);
  }
}

@keyframes city-runtime-request {
  from {
    opacity: 0.32;
    stroke-dashoffset: 80;
    transform: translateX(-5px);
  }
  to {
    opacity: 1;
    stroke-dashoffset: 0;
    transform: translateX(0);
  }
}

@keyframes city-pictogram-hover-geometry {
  from {
    stroke-dasharray: 160;
    stroke-dashoffset: 32;
  }
  to {
    stroke-dasharray: 160;
    stroke-dashoffset: 0;
  }
}

@keyframes city-pictogram-hover-signal {
  from {
    opacity: 0.42;
    stroke-dashoffset: 80;
  }
  to {
    opacity: 1;
    stroke-dashoffset: 0;
  }
}

@media (hover: hover) and (pointer: fine) {
  .city-ledger__row .city-motion-icon:hover {
    border-color: var(--city-clay);
    background: #eaf8fb;
  }

  .city-ledger__row .city-motion-icon:hover .city-pictogram__geometry {
    animation: city-pictogram-hover-geometry 460ms cubic-bezier(0.16, 1, 0.3, 1) both;
  }

  .city-ledger__row .city-motion-icon:hover .city-pictogram__signal {
    animation: city-pictogram-hover-signal 560ms cubic-bezier(0.16, 1, 0.3, 1) 80ms both;
  }
}

.city-step > .city-motion-icon {
  width: 76px;
  margin-bottom: 30px;
}

@media (prefers-reduced-motion: reduce) {
  .city-motion-icon {
    transition: none;
  }

  .city-ledger__row.is-icon-active .city-pictogram__signal,
  .city-step.is-icon-active .city-pictogram__signal,
  .city-pictogram__signal {
    animation: none !important;
    stroke-dashoffset: 0 !important;
  }

  .city-ledger,
  .city-ledger__row,
  .city-ledger__row .city-pictogram * {
    animation: none !important;
    clip-path: inset(0) !important;
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
}

.city-ledger__row h3,
.city-step h3 {
  margin: 0;
  color: var(--city-ivory);
  font-family: var(--city-font-display);
  font-size: clamp(1.5rem, 2vw, 2.15rem);
  font-weight: 600;
  letter-spacing: -0.015em;
  line-height: 0.98;
}

.city-ledger__row div p,
.city-step p {
  margin: 10px 0 0;
  color: var(--city-parchment);
  font-size: 0.93rem;
  line-height: 1.6;
}

.city-ledger__row a,
.city-step a {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  margin-top: 14px;
  color: var(--city-ivory);
  font-size: 0.8rem;
  font-weight: 800;
  text-underline-offset: 4px;
}

.city-proof .city-ledger__row a {
  color: var(--city-evidence-link);
}

.city-proof .city-ledger__row a:hover {
  color: var(--city-evidence-link-hover);
}

.city-solution-reveal {
  opacity: 1;
  clip-path: inset(0);
  transition: opacity 620ms cubic-bezier(0.16, 1, 0.3, 1), clip-path 620ms cubic-bezier(0.16, 1, 0.3, 1);
}

.has-city-js .city-solution-reveal.is-pending {
  opacity: 0.62;
  clip-path: inset(12px 0 0);
  transition: opacity 620ms cubic-bezier(0.16, 1, 0.3, 1), clip-path 620ms cubic-bezier(0.16, 1, 0.3, 1);
}

.city-ledger__row a:hover,
.city-step a:hover {
  color: var(--city-state-strong);
}

.city-ledger__datum {
  color: var(--city-evidence-datum);
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 0.76rem;
  line-height: 1.55;
}

.city-ledger__datum strong {
  display: block;
  margin-bottom: 4px;
  color: var(--city-evidence-label);
  font-family: var(--city-font-body);
  font-size: var(--city-type-micro);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.city-evidence-tools {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: clamp(50px, 6vw, 78px);
  border-top: 1px solid var(--city-ink-rule-strong);
  border-bottom: 1px solid var(--city-ink-rule-strong);
}

.city-command {
  display: grid;
  align-content: space-between;
  min-height: 250px;
  padding: clamp(26px, 3.5vw, 44px);
  background: var(--city-clay);
  color: var(--city-graphite-deep);
  text-decoration: none;
}

.city-command h3,
.city-receipt__heading span {
  margin: 0;
  font-size: var(--city-type-micro);
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.city-command code {
  display: block;
  margin-block: 40px;
  padding-bottom: 6px;
  overflow-x: auto;
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: clamp(0.72rem, 1.05vw, 1rem);
  line-height: 1.4;
  white-space: nowrap;
  scrollbar-color: rgba(7, 10, 16, 0.48) transparent;
  scrollbar-width: thin;
}

.city-command__actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.city-command__actions button,
.city-command__actions a {
  min-height: 44px;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--city-graphite-deep);
  font: inherit;
  font-size: var(--city-type-micro);
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: underline;
  text-underline-offset: 5px;
}

.city-command__actions button {
  cursor: pointer;
}

.city-command__actions button:hover,
.city-command__actions a:hover {
  text-decoration-thickness: 2px;
}

.city-command__actions button[data-copy-state="copied"] {
  text-decoration: none;
}

.city-command__actions a {
  display: inline-flex;
  align-items: center;
  text-align: right;
}

.city-receipt {
  min-width: 0;
  padding: clamp(26px, 3.5vw, 44px);
  border-left: 1px solid var(--city-ivory-rule);
  background: var(--city-graphite-deep);
  color: var(--city-ivory);
}

.city-receipt__heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.city-receipt__heading h3 {
  margin: 0;
  font-family: var(--city-font-display);
  font-size: clamp(1.55rem, 2.4vw, 2.3rem);
  font-weight: 600;
  letter-spacing: -0.015em;
}

.city-receipt__heading span {
  color: var(--city-state-strong);
  white-space: nowrap;
}

.city-receipt dl {
  display: grid;
  grid-template-columns: 0.7fr 1.55fr 0.58fr 0.7fr;
  margin: 38px 0 0;
  padding: 0;
  border-top: 1px solid var(--city-line);
}

.city-receipt dl div {
  min-width: 0;
  padding: 18px 14px 0 0;
}

.city-receipt dt {
  color: var(--city-mist);
  font-size: var(--city-type-micro);
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.city-receipt dd {
  margin: 8px 0 0;
  color: var(--city-ivory);
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 0.78rem;
  overflow-wrap: anywhere;
}

.city-steps {
  border-top: 1px solid var(--city-line);
  background: var(--city-graphite-deep);
}

.city-steps__list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--city-frame-line-strong);
  border-bottom: 1px solid var(--city-frame-line-strong);
  counter-reset: quick-start;
  gap: 0;
  list-style: none;
}

.city-step {
  --city-step-delay: 0ms;

  position: relative;
  min-width: 0;
  padding: clamp(26px, 3vw, 38px);
  border-left: 1px solid var(--city-line);
  background: transparent;
  clip-path: inset(0);
  counter-increment: quick-start;
  opacity: 1;
  transform: translateY(0);
  transition: opacity 1.05s cubic-bezier(0.16, 1, 0.3, 1) var(--city-step-delay), transform 1.05s cubic-bezier(0.16, 1, 0.3, 1) var(--city-step-delay), clip-path 1.05s cubic-bezier(0.16, 1, 0.3, 1) var(--city-step-delay), background-color 260ms ease;
}

.city-step:first-child {
  border-left: 0;
}

.city-step:nth-child(2) {
  --city-step-delay: 180ms;
}

.city-step:nth-child(3) {
  --city-step-delay: 360ms;
}

.city-step:nth-child(4) {
  --city-step-delay: 540ms;
}

.has-city-js .city-steps__list.is-setup-pending .city-step {
  clip-path: inset(24px 0 0);
  opacity: 0.3;
  transform: translateY(24px);
}

.city-step::before {
  display: block;
  margin-bottom: 20px;
  color: var(--city-state-strong);
  content: counter(quick-start, decimal-leading-zero);
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: var(--city-type-micro);
}

.city-step::after {
  position: absolute;
  top: -1px;
  right: 0;
  left: 0;
  height: 2px;
  background: var(--city-state-strong);
  content: "";
  pointer-events: none;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 420ms cubic-bezier(0.16, 1, 0.3, 1);
}

.city-step.is-icon-active .city-pictogram__geometry {
  animation: city-step-geometry-draw 820ms cubic-bezier(0.16, 1, 0.3, 1) calc(var(--city-step-delay) + 260ms) both;
}

.city-step.is-icon-active .city-pictogram--install .city-pictogram__signal {
  animation: city-install-command 900ms cubic-bezier(0.16, 1, 0.3, 1) calc(var(--city-step-delay) + 400ms) both;
}

.city-step.is-icon-active .city-pictogram--initialize .city-pictogram__signal {
  animation: city-initialize-control 900ms cubic-bezier(0.16, 1, 0.3, 1) calc(var(--city-step-delay) + 400ms) both;
}

.city-step.is-icon-active .city-pictogram--deploy .city-pictogram__signal {
  animation: city-deploy-route 900ms cubic-bezier(0.16, 1, 0.3, 1) calc(var(--city-step-delay) + 400ms) both;
}

.city-step.is-icon-active .city-pictogram--verify .city-pictogram__signal {
  animation: city-verify-check 900ms cubic-bezier(0.16, 1, 0.3, 1) calc(var(--city-step-delay) + 400ms) both;
}

@keyframes city-step-geometry-draw {
  from {
    opacity: 0.46;
    stroke-dasharray: 160;
    stroke-dashoffset: 44;
  }
  to {
    opacity: 1;
    stroke-dasharray: 160;
    stroke-dashoffset: 0;
  }
}

@keyframes city-install-command {
  from {
    opacity: 0.36;
    stroke-dashoffset: 80;
    transform: translateX(-5px);
  }
  to {
    opacity: 1;
    stroke-dashoffset: 0;
    transform: translateX(0);
  }
}

@keyframes city-initialize-control {
  from {
    opacity: 0.36;
    stroke-dashoffset: 80;
    transform: translateX(-9px);
  }
  to {
    opacity: 1;
    stroke-dashoffset: 0;
    transform: translateX(0);
  }
}

@keyframes city-deploy-route {
  from {
    opacity: 0.36;
    stroke-dashoffset: 80;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    stroke-dashoffset: 0;
    transform: translateY(0);
  }
}

@keyframes city-verify-check {
  from {
    opacity: 0.36;
    stroke-dashoffset: 80;
  }
  to {
    opacity: 1;
    stroke-dashoffset: 0;
  }
}

@keyframes city-step-hover-signal {
  from {
    opacity: 0.42;
    stroke-dashoffset: 80;
  }
  to {
    opacity: 1;
    stroke-dashoffset: 0;
  }
}

@media (hover: hover) and (pointer: fine) {
  .city-step:hover {
    background: rgb(87 220 233 / 0.055);
  }

  .city-step:hover::after {
    transform: scaleX(1);
  }

  .city-step:hover .city-motion-icon {
    border-color: var(--city-state-strong);
    background: rgb(87 220 233 / 0.09);
  }

  .city-step.is-icon-active:hover .city-pictogram .city-pictogram__signal {
    animation: city-step-hover-signal 560ms cubic-bezier(0.16, 1, 0.3, 1) 70ms both;
  }
}

.city-step code {
  color: var(--city-ivory);
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 0.84em;
  overflow-wrap: anywhere;
}

.city-steps__link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  margin-top: 24px;
  color: var(--city-ivory);
  font-size: 0.84rem;
  font-weight: 800;
  text-underline-offset: 4px;
}

.city-steps__link:hover {
  color: var(--city-state-strong);
}

/* MCP contract --------------------------------------------------------- */

.city-mcp {
  border-top: 1px solid var(--city-frame-line-strong);
  background: var(--city-graphite);
  color: var(--city-ivory);
}

.city-mcp__inner {
  display: grid;
  grid-template-columns: 1fr;
  padding-block: clamp(80px, 6vw, 98px);
  gap: clamp(48px, 5vw, 70px);
}

.city-mcp__heading {
  grid-column: 1 / -1;
  width: 100%;
  margin-inline: auto;
  clip-path: inset(0);
  opacity: 1;
  text-align: center;
  transform: translateY(0);
  transition: opacity 950ms cubic-bezier(0.16, 1, 0.3, 1), transform 950ms cubic-bezier(0.16, 1, 0.3, 1), clip-path 950ms cubic-bezier(0.16, 1, 0.3, 1);
}

.city-mcp__body {
  display: grid;
  grid-template-columns: minmax(300px, 0.72fr) minmax(520px, 1.28fr);
  align-items: center;
  gap: clamp(44px, 7vw, 94px);
}

.city-mcp__copy {
  min-width: 0;
}

.city-mcp__heading h2 {
  max-width: 18ch;
  margin: 0;
  margin-inline: auto;
  color: var(--city-ivory);
  font-family: var(--city-font-display);
  font-size: clamp(2.55rem, 4.1vw, 4.6rem);
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 0.9;
  text-wrap: balance;
}

.city-mcp__heading > p {
  max-width: 72ch;
  margin: 24px 0 0;
  margin-inline: auto;
  color: var(--city-parchment);
  font-size: clamp(1rem, 1.25vw, 1.1rem);
  line-height: 1.65;
}

.city-mcp__assurance {
  margin: 0;
  border-top: 1px solid var(--city-line);
  border-bottom: 1px solid var(--city-line);
}

.city-mcp__assurance div {
  display: grid;
  grid-template-columns: minmax(110px, 0.8fr) minmax(0, 1.2fr);
  align-items: baseline;
  padding-block: 13px;
  border-top: 1px solid var(--city-line);
  gap: 18px;
}

.city-mcp__assurance div:first-child {
  border-top: 0;
}

.city-mcp__assurance dt,
.city-mcp__assurance dd {
  margin: 0;
}

.city-mcp__assurance dt {
  color: var(--city-mist);
  font-size: var(--city-type-micro);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.city-mcp__assurance dd {
  color: var(--city-ivory);
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 0.78rem;
  line-height: 1.45;
}

.city-mcp__actions {
  display: flex;
  flex-wrap: wrap;
  margin-top: 30px;
  gap: 10px;
}

.city-mcp__actions .city-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 13px 18px;
  border-radius: 2px;
  font-size: 0.84rem;
  font-weight: 800;
  line-height: 1.2;
  text-decoration: none;
}

.city-mcp__actions .city-button--secondary {
  border: 1px solid var(--city-line-strong);
  background: var(--city-graphite-deep);
  color: var(--city-ivory);
  transition: border-color 150ms ease, background-color 150ms ease, transform 150ms ease;
}

.city-mcp__actions .city-button--secondary:hover {
  border-color: var(--city-parchment);
  background: var(--city-graphite-soft);
  transform: translateY(-1px);
}

.city-mcp__copy .city-mcp__note {
  margin-top: 18px;
  color: var(--city-mist);
  font-size: 0.75rem;
  line-height: 1.55;
}

.city-mcp__contract {
  min-width: 0;
  border: 1px solid var(--city-frame-line-strong);
  background: var(--city-graphite-deep);
  opacity: 1;
  transform: translateY(0);
  transition: opacity 1s cubic-bezier(0.16, 1, 0.3, 1) 160ms, transform 1s cubic-bezier(0.16, 1, 0.3, 1) 160ms;
}

.has-city-js .city-mcp.is-mcp-pending .city-mcp__heading {
  clip-path: inset(18px 0 0);
  opacity: 0.38;
  transform: translateY(18px);
  transition: none;
}

.has-city-js .city-mcp.is-mcp-pending .city-mcp__contract {
  opacity: 0.62;
  transform: translateY(20px);
  transition: none;
}

.city-mcp__contract-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-width: 0;
  padding: 22px 24px;
  border-bottom: 1px solid var(--city-frame-line-strong);
  gap: 24px;
}

.city-mcp__contract-head > div {
  min-width: 0;
}

.city-mcp__contract-head span,
.city-mcp__contract-head strong {
  display: block;
  color: var(--city-state-strong);
  font-size: var(--city-type-micro);
  font-weight: 800;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.city-mcp__contract-head code {
  display: block;
  margin-top: 8px;
  color: var(--city-ivory);
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: clamp(0.74rem, 1vw, 0.9rem);
  line-height: 1.45;
  overflow-wrap: anywhere;
}

.city-mcp__contract-head strong {
  flex: 0 0 auto;
  padding: 7px 9px;
  border: 1px solid var(--city-frame-line-strong);
  color: var(--city-ivory);
  font-size: 0.62rem;
}

.city-mcp__route {
  display: grid;
  grid-template-columns: auto minmax(24px, 1fr) auto minmax(24px, 1fr) auto;
  align-items: center;
  padding: 19px 24px;
  border-bottom: 1px solid var(--city-line);
  color: var(--city-mist);
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  line-height: 1.2;
  text-transform: uppercase;
  gap: 10px;
}

.city-mcp__route i {
  position: relative;
  display: block;
  height: 1px;
  background: var(--city-frame-line-strong);
  transform: scaleX(1);
  transform-origin: left center;
}

.city-mcp__route i::after {
  position: absolute;
  top: 50%;
  left: 0;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--city-state-strong);
  content: "";
  transform: translate(-50%, -50%);
}

.city-mcp.is-mcp-active .city-mcp__route span {
  animation: city-mcp-node-activate 650ms cubic-bezier(0.16, 1, 0.3, 1) both;
}

.city-mcp.is-mcp-active .city-mcp__route span:nth-of-type(1) {
  animation-delay: 200ms;
}

.city-mcp.is-mcp-active .city-mcp__route span:nth-of-type(2) {
  animation-delay: 1050ms;
}

.city-mcp.is-mcp-active .city-mcp__route span:nth-of-type(3) {
  animation-delay: 1900ms;
}

.city-mcp.is-mcp-active .city-mcp__route i {
  animation: city-mcp-route-draw 800ms cubic-bezier(0.16, 1, 0.3, 1) both;
}

.city-mcp.is-mcp-active .city-mcp__route i:nth-of-type(1),
.city-mcp.is-mcp-active .city-mcp__route i:nth-of-type(1)::after {
  animation-delay: 420ms;
}

.city-mcp.is-mcp-active .city-mcp__route i:nth-of-type(2),
.city-mcp.is-mcp-active .city-mcp__route i:nth-of-type(2)::after {
  animation-delay: 1270ms;
}

.city-mcp.is-mcp-active .city-mcp__route i::after {
  animation: city-mcp-marker-travel 800ms cubic-bezier(0.16, 1, 0.3, 1) both;
}

.city-mcp__tools {
  border-bottom: 1px solid var(--city-line);
}

.city-mcp__tool {
  position: relative;
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr) auto;
  align-items: center;
  min-width: 0;
  padding: 24px;
  border-top: 1px solid var(--city-line);
  gap: 18px;
  overflow: hidden;
  transition: background-color 180ms ease;
}

.city-mcp__tool::after {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 2px;
  background: var(--city-state-strong);
  content: "";
  pointer-events: none;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 420ms cubic-bezier(0.16, 1, 0.3, 1);
}

.city-mcp.is-mcp-active .city-mcp__tool {
  animation: city-mcp-tool-reveal 850ms cubic-bezier(0.16, 1, 0.3, 1) both;
}

.city-mcp.is-mcp-active .city-mcp__tool:nth-child(1) {
  animation-delay: 2150ms;
}

.city-mcp.is-mcp-active .city-mcp__tool:nth-child(2) {
  animation-delay: 2300ms;
}

.city-mcp__tool:first-child {
  border-top: 0;
}

.city-mcp__tool:hover {
  background: var(--city-accent-wash);
}

@media (hover: hover) and (pointer: fine) {
  .city-mcp__tool:hover::after {
    transform: scaleX(1);
  }

  .city-mcp__tool:hover .city-mcp__scope {
    color: var(--city-state-strong);
    animation: city-mcp-scope-inspect 520ms cubic-bezier(0.16, 1, 0.3, 1) both;
  }
}

.city-mcp__tool-index,
.city-mcp__scope {
  color: var(--city-state-strong);
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 0.66rem;
  line-height: 1.4;
}

.city-mcp__tool-index {
  letter-spacing: 0.08em;
}

.city-mcp__tool > div {
  min-width: 0;
}

.city-mcp__tool code {
  color: var(--city-ivory);
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: clamp(0.76rem, 1vw, 0.88rem);
  line-height: 1.45;
  overflow-wrap: anywhere;
}

.city-mcp__tool p {
  margin: 7px 0 0;
  color: var(--city-parchment);
  font-size: 0.86rem;
  line-height: 1.5;
}

.city-mcp__scope {
  max-width: none;
  color: var(--city-mist);
  font-size: 0.6rem;
  text-align: right;
  white-space: nowrap;
}

.city-mcp__boundary {
  margin: 0;
  padding: 20px 24px 22px;
  color: var(--city-mist);
  font-size: 0.78rem;
  line-height: 1.6;
}

.city-mcp__boundary strong {
  display: block;
  margin-bottom: 5px;
  color: var(--city-ivory);
  font-size: var(--city-type-micro);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

@keyframes city-mcp-node-activate {
  from {
    color: var(--city-mist);
    opacity: 0.42;
    transform: translateY(5px);
  }
  to {
    color: var(--city-ivory);
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes city-mcp-route-draw {
  from { transform: scaleX(0); }
  to { transform: scaleX(1); }
}

@keyframes city-mcp-route-draw-vertical {
  from { transform: scaleY(0); }
  to { transform: scaleY(1); }
}

@keyframes city-mcp-marker-travel {
  from { left: 0; opacity: 0; }
  18% { opacity: 1; }
  to { left: 100%; opacity: 1; }
}

@keyframes city-mcp-marker-travel-vertical {
  from { top: 0; opacity: 0; }
  18% { opacity: 1; }
  to { top: 100%; opacity: 1; }
}

@keyframes city-mcp-tool-reveal {
  from {
    clip-path: inset(14px 0 0);
    opacity: 0.32;
    transform: translateY(14px);
  }
  to {
    clip-path: inset(0);
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes city-mcp-scope-inspect {
  from { letter-spacing: 0; opacity: 0.52; }
  to { letter-spacing: 0.025em; opacity: 1; }
}

/* Terminal image and CTA ------------------------------------------------ */

.city-faq {
  border-top: 1px solid var(--city-ink-rule-soft);
  background: var(--city-evidence-paper);
  color: var(--city-graphite-deep);
}

.city-faq__inner {
  display: grid;
  grid-template-columns: minmax(280px, 0.72fr) minmax(460px, 1.28fr);
  align-items: start;
  padding-block: clamp(82px, 7vw, 112px);
  gap: clamp(46px, 7vw, 92px);
}

.city-faq__inner > h2 {
  margin: 0;
}

.city-faq__list {
  border-top: 1px solid var(--city-ink-rule-strong);
}

.city-faq__item {
  border-bottom: 1px solid var(--city-ink-rule);
}

.city-faq__item summary {
  position: relative;
  padding: 24px 48px 24px 0;
  color: var(--city-graphite-deep);
  cursor: pointer;
  font-family: var(--city-font-display);
  font-size: clamp(1.08rem, 1.6vw, 1.35rem);
  font-weight: 600;
  line-height: 1.25;
  list-style: none;
}

.city-faq__item summary::-webkit-details-marker {
  display: none;
}

.city-faq__item summary::before,
.city-faq__item summary::after {
  position: absolute;
  top: 50%;
  right: 4px;
  width: 18px;
  height: 2px;
  background: var(--city-evidence-state);
  content: "";
  transform: translateY(-50%);
  transition: opacity 160ms ease, transform 160ms ease;
}

.city-faq__item summary::after {
  transform: translateY(-50%) rotate(90deg);
}

.city-faq__item[open] summary::after {
  opacity: 0;
  transform: translateY(-50%) rotate(0);
}

.city-faq__item summary:focus-visible {
  outline: 3px solid var(--city-evidence-state);
  outline-offset: 4px;
}

.city-faq__item p {
  max-width: 66ch;
  margin: -4px 48px 25px 0;
  color: var(--city-evidence-copy);
  line-height: 1.65;
}

.city-faq__item code {
  color: inherit;
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 0.84em;
  overflow-wrap: anywhere;
}

.city-closing {
  width: 100%;
  border-top: 1px solid var(--city-line);
  background: var(--city-graphite);
}

.city-closing__inner {
  display: grid;
  grid-template-columns: minmax(300px, 0.68fr) minmax(460px, 1.32fr);
  align-items: center;
  min-height: min(700px, 70svh);
  padding-block: clamp(88px, 9vw, 128px);
  gap: clamp(40px, 6vw, 82px);
}

.city-closing__copy {
  min-width: 0;
}

.city-closing__copy > p {
  margin: 22px 0 0;
}

.city-closing__actions {
  display: flex;
  flex-wrap: wrap;
  margin-top: 28px;
  gap: 10px;
}

.city-closing__actions a {
  min-height: 46px;
  padding: 13px 18px;
  border-radius: 2px;
  font-size: 0.86rem;
  font-weight: 800;
  line-height: 1.2;
  text-decoration: none;
}

.city-closing__actions a:not(:first-child) {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--city-line-strong);
  background: var(--city-graphite-deep);
  color: var(--city-ivory);
  transition: border-color 150ms ease, background-color 150ms ease;
}

.city-closing__actions a:not(:first-child):hover {
  border-color: var(--city-parchment);
  background: var(--city-graphite);
}

.city-closing__figure {
  position: relative;
  width: 100%;
  margin: 0;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--city-frame-line-strong);
  border-radius: var(--city-radius);
  background: var(--city-graphite-deep);
  box-shadow: none;
}

.city-closing__figure picture,
.city-closing__figure img {
  width: 100%;
  height: 100%;
}

.city-closing__figure img {
  object-fit: cover;
  object-position: center;
}

.city-closing__figure figcaption {
  position: absolute;
  z-index: 4;
  right: 12px;
  bottom: 12px;
  max-width: calc(100% - 24px);
  padding: 7px 9px;
  border: 1px solid var(--city-frame-line-strong);
  border-radius: 5px;
  background: var(--city-caption-surface);
  color: var(--city-parchment);
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: var(--city-type-micro);
  line-height: 1.4;
}

.city-closing__figure.is-missing {
  display: grid;
  place-items: center;
  background: var(--city-cork-dark);
}

.city-closing__figure.is-missing::before {
  max-width: 20ch;
  color: var(--city-ivory);
  content: "Protected request route";
  font-family: var(--city-font-display);
  font-size: clamp(1.45rem, 2.8vw, 2.5rem);
  font-weight: 680;
  letter-spacing: -0.04em;
  line-height: 1;
  text-align: center;
}

/* Full footer ----------------------------------------------------------- */

.city-footer {
  border-top: 1px solid var(--city-line-strong);
  background: var(--city-cork-dark);
  color: var(--city-ivory);
}

.city-footer__inner {
  padding-block: clamp(58px, 7vw, 86px) 28px;
}

.city-footer__brand {
  display: flex;
  align-items: end;
  justify-content: space-between;
  padding-bottom: 34px;
  border-bottom: 1px solid var(--city-line-strong);
  gap: 24px;
}

.city-footer__brand > * {
  margin: 0;
}

.city-footer__brand a,
.city-footer__brand strong {
  color: var(--city-ivory);
  font-family: var(--city-font-display);
  font-size: clamp(1.45rem, 2.35vw, 2rem);
  font-weight: 690;
  letter-spacing: -0.035em;
  text-decoration: none;
}

.city-footer__grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  padding-block: 36px 30px;
  gap: 26px;
}

.city-footer__group {
  min-width: 0;
}

.city-footer__group h2 {
  margin: 0 0 13px;
  color: var(--city-ivory);
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: var(--city-type-micro);
  font-weight: 800;
  letter-spacing: 0.13em;
  line-height: 1.3;
  text-transform: uppercase;
}

.city-footer__group ul {
  display: grid;
  margin: 0;
  padding: 0;
  gap: 1px;
  list-style: none;
}

.city-footer__group a {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  color: var(--city-parchment);
  font-size: 0.82rem;
  line-height: 1.35;
  text-decoration: none;
  text-underline-offset: 4px;
}

.city-footer__group a:hover {
  color: var(--city-pure-white);
  text-decoration: underline;
}

.city-footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 48px;
  padding-top: 20px;
  border-top: 1px solid var(--city-line-strong);
  color: var(--city-mist);
  font-size: 0.75rem;
  line-height: 1.45;
  gap: 18px;
}

/* Focus and interaction states ----------------------------------------- */

.city-page a:focus-visible,
.city-page button:focus-visible,
.city-page input:focus-visible,
.city-page select:focus-visible,
.city-page textarea:focus-visible {
  outline: 3px solid var(--city-state-strong);
  outline-offset: 3px;
  box-shadow: 0 0 0 6px var(--city-graphite-deep);
}

.city-page .city-proof a:focus-visible,
.city-page .city-proof button:focus-visible,
.city-page .city-command:focus-visible,
.city-page .city-button--primary:focus-visible,
.city-page .city-closing__actions a:first-child:focus-visible {
  outline-color: var(--city-graphite-deep);
  box-shadow: 0 0 0 6px var(--city-state-strong);
}

/* Responsive ------------------------------------------------------------ */

@media (max-width: 1040px) {
  .city-proof__inner,
  .city-context__inner,
  .city-explainer__inner,
  .city-steps__inner,
  .city-mcp__inner,
  .city-faq__inner,
  .city-closing__inner,
  .city-footer__inner {
    width: min(100% - 32px, var(--city-content));
  }

  .city-steps__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .city-closing__inner {
    grid-template-columns: minmax(260px, 0.72fr) minmax(400px, 1.28fr);
    gap: 36px;
  }

  .city-footer__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 900px) {
  .city-context__heading,
  .city-faq__inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .city-context__heading > *,
  .city-faq__inner > h2 {
    max-width: var(--city-reading);
  }

  .city-explainer__inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .city-explainer__copy {
    max-width: var(--city-reading);
    padding-top: 0;
  }

  .city-explainer__copy h2 {
    max-width: 12ch;
  }

  .city-proof__intro {
    grid-template-columns: 1fr;
    align-items: start;
    gap: 32px;
  }

  .city-proof__intro .city-section-heading {
    max-width: var(--city-reading);
  }

  .city-mcp__inner {
    gap: 38px;
  }

  .city-mcp__body {
    grid-template-columns: 1fr;
    align-items: start;
    gap: 42px;
  }

  .city-mcp__copy {
    width: min(100%, var(--city-reading));
    margin-inline: auto;
  }
}

@media (max-width: 820px) {

  .city-context__comparison {
    grid-template-columns: 1fr;
  }

  .city-context__comparison > div,
  .city-context__comparison > div + div {
    padding: 25px 0 29px;
    border-left: 0;
  }

  .city-context__comparison > div + div {
    border-top: 1px solid var(--city-ink-rule);
  }

  .city-section-heading {
    grid-template-columns: 1fr;
    align-items: start;
    gap: 16px;
  }

  .city-section-heading h2,
  .city-section-heading > p:last-child {
    grid-column: 1;
    grid-row: auto;
  }

  .city-steps__list {
    grid-template-columns: 1fr;
  }

  .city-ledger__row {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .city-evidence-tools {
    grid-template-columns: 1fr;
  }

  .city-receipt {
    border-top: 1px solid var(--city-ivory-rule);
    border-left: 0;
  }

  .city-ledger__datum,
  .city-ledger__row > a {
    grid-column: 1;
  }

  .city-ledger__row > a {
    justify-self: start;
  }

  .city-step {
    border-top: 1px solid var(--city-line);
    border-left: 0;
  }

  .city-step:first-child {
    border-top: 0;
  }

  .city-closing__inner {
    grid-template-columns: 1fr;
    min-height: 0;
    padding-block: 78px;
    gap: 38px;
  }

  .city-closing__copy {
    max-width: var(--city-reading);
  }

  .city-footer__brand {
    display: grid;
    align-items: start;
  }

  .city-footer__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 26px 18px;
  }
}

@media (max-width: 560px) {

  .city-media-diagram text,
  .city-media-diagram__node rect,
  .city-media-diagram__activity rect {
    opacity: 0;
  }

  .city-media-diagram {
    display: none;
  }

  .city-media-compact-labels {
    position: absolute;
    inset: 0;
    z-index: 3;
    display: block;
    color: var(--city-ivory);
    pointer-events: none;
  }

  .city-media-compact-node {
    position: absolute;
    display: grid;
    min-width: 52px;
    padding: 4px 5px;
    border: 1px solid rgb(129 232 240 / 0.72);
    border-radius: 2px;
    background: rgb(3 8 17 / 0.92);
    line-height: 1.05;
    gap: 2px;
  }

  .city-media-compact-node b {
    color: var(--city-ivory);
    font-family: var(--city-font-body);
    font-size: 12px;
    letter-spacing: 0.03em;
    text-transform: uppercase;
  }

  .city-media-compact-node small,
  .city-media-compact-route,
  .city-media-compact-credential {
    color: var(--city-parchment);
    font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
    font-size: 11px;
    letter-spacing: 0;
    line-height: 1.2;
  }

  .city-media-compact-node--proxy {
    border-color: var(--city-pure-white);
    background: rgb(7 10 16 / 0.97);
  }

  .city-media-compact-labels--boundary [data-compact-boundary-node="app"] {
    top: 72%;
    left: 4%;
  }

  .city-media-compact-labels--boundary [data-compact-boundary-node="share-a"] {
    top: 60%;
    left: 27%;
  }

  .city-media-compact-labels--boundary [data-compact-boundary-node="share-b"] {
    top: 84%;
    left: 27%;
  }

  .city-media-compact-labels--boundary [data-compact-boundary-node="proxy"] {
    top: 72%;
    left: 54%;
  }

  .city-media-compact-labels--boundary [data-compact-boundary-node="provider"] {
    top: 84%;
    right: 4%;
  }

  .city-media-compact-credential {
    position: absolute;
    top: 48%;
    left: 49%;
    width: 45%;
    padding: 2px 4px;
    background: rgb(3 8 17 / 0.88);
    color: var(--city-pure-white);
    text-align: center;
  }

  .city-media-compact-labels--request [data-compact-request-node="app"] {
    top: 8%;
    left: 4%;
  }

  .city-media-compact-labels--request [data-compact-request-node="proxy"] {
    top: 24%;
    left: 36%;
  }

  .city-media-compact-labels--request [data-compact-request-node="provider"] {
    top: 8%;
    right: 4%;
  }

  .city-media-compact-labels--request [data-compact-request-node="activity"] {
    top: 34%;
    right: 4%;
    width: 48%;
  }

  .city-media-compact-node--activity small {
    overflow-wrap: anywhere;
  }

  .city-media-compact-route {
    position: absolute;
    padding: 2px 4px;
    background: rgb(3 8 17 / 0.78);
    color: var(--city-pure-white);
  }

  .city-media-compact-route--request {
    top: 8%;
    left: 39%;
  }

  .city-media-compact-route--response {
    top: 24%;
    left: 5%;
  }

  .city-mcp__inner {
    width: calc(100% - 24px);
    padding-block: 72px;
  }

  .city-mcp__heading h2 {
    font-size: clamp(2.3rem, 10.5vw, 3.45rem);
  }

  .city-mcp__actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .city-mcp__contract-head {
    align-items: flex-start;
    flex-direction: column;
    padding: 19px 18px;
    gap: 16px;
  }

  .city-mcp__route {
    grid-template-columns: 1fr;
    justify-items: start;
    padding: 17px 18px;
    font-size: 0.6rem;
    gap: 5px;
  }

  .city-mcp__route i {
    width: 1px;
    height: 18px;
    margin-left: 5px;
    transform: scaleY(1);
    transform-origin: center top;
  }

  .city-mcp__route i::after {
    top: 0;
    right: auto;
    bottom: auto;
    left: 50%;
    transform: translate(-50%, -50%);
  }

  .city-mcp.is-mcp-active .city-mcp__route i {
    animation-name: city-mcp-route-draw-vertical;
  }

  .city-mcp.is-mcp-active .city-mcp__route i::after {
    animation-name: city-mcp-marker-travel-vertical;
  }

  .city-mcp__tool {
    grid-template-columns: 28px minmax(0, 1fr);
    padding: 21px 18px;
    gap: 14px;
  }

  .city-mcp__scope {
    grid-column: 2;
    max-width: none;
    overflow-wrap: anywhere;
    text-align: left;
    white-space: normal;
  }

  .city-mcp__boundary {
    padding: 18px;
  }

  .city-command {
    padding-inline: 16px;
  }

  .city-receipt__heading {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
  }

  .city-proof__media.is-motion-ready .city-media-earth img,
  .city-closing__figure.is-motion-ready .city-media-earth img {
    transform: translate3d(0, var(--city-media-scroll-y), 0) scale(var(--city-media-scale));
  }

  .city-proof__media .city-media-plane,
  .city-closing__figure .city-media-plane {
    position: relative;
    inset: auto;
    aspect-ratio: 4 / 5;
  }

  .city-proof__media .city-media-earth,
  .city-closing__figure .city-media-earth {
    inset: 0;
  }

  .city-proof__media.is-motion-ready .city-media-earth,
  .city-closing__figure.is-motion-ready .city-media-earth {
    animation-name: city-earth-rotation-mobile;
  }

  .city-proof__media.is-motion-ready,
  .city-closing__figure.is-motion-ready,
  .city-proof__media.is-motion-ready.is-in-view,
  .city-closing__figure.is-motion-ready.is-in-view {
    --city-media-scale: 1.018;
  }

  .city-command__actions {
    align-items: flex-start;
    flex-direction: column;
    gap: 4px;
  }

  .city-command__actions a {
    text-align: left;
  }

  .city-proof__media picture,
  .city-proof__media img {
    height: 100%;
    aspect-ratio: auto;
    object-fit: contain;
    object-position: center;
    background: var(--city-graphite-deep);
  }

  .city-proof__media {
    aspect-ratio: auto;
  }

  .city-proof__media figcaption {
    align-items: flex-start;
    flex-direction: column;
    gap: 3px;
    position: static;
    margin: 0;
    border: 0;
    border-top: 1px solid var(--city-frame-line);
    border-radius: 0;
  }

  .city-closing__figure {
    aspect-ratio: auto;
  }

  .city-closing__figure picture,
  .city-closing__figure img {
    height: 100%;
    aspect-ratio: auto;
    object-fit: contain;
  }

  .city-closing__figure figcaption {
    position: static;
    max-width: none;
    margin: 0;
    border: 0;
    border-top: 1px solid var(--city-frame-line);
    border-radius: 0;
    font-size: var(--city-type-micro);
  }

  .city-receipt dl {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .city-receipt__route {
    grid-column: 1 / -1;
    grid-row: 2;
  }

  .city-proof__inner,
  .city-explainer__inner,
  .city-steps__inner {
    width: calc(100% - 24px);
    padding-block: 72px;
  }

  .city-proof__intro {
    margin-bottom: 52px;
  }

  .city-section-heading h2,
  .city-explainer__copy h2,
  .city-context__heading h2,
  .city-faq__inner > h2,
  .city-closing__copy h2 {
    font-size: clamp(2.3rem, 10.5vw, 3.45rem);
  }

  .city-proof__media figcaption strong {
    text-align: left;
  }

  .city-step {
    padding: 23px 21px;
  }

  .city-step::before {
    margin-bottom: 22px;
  }

  .city-closing__inner,
  .city-context__inner,
  .city-faq__inner,
  .city-footer__inner {
    width: calc(100% - 24px);
  }

  .city-closing__inner {
    padding-block: 74px;
  }

  .city-closing__actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .city-footer__grid {
    padding-block: 30px 24px;
  }

  .city-footer__group a {
    min-height: 42px;
    font-size: 0.86rem;
  }

  .city-footer__bottom {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 390px) {

  .city-footer__grid {
    grid-template-columns: 1fr;
  }
}

@media (hover: none) and (pointer: coarse) {
  .city-page .city-footer__group a,
  .city-page .city-ledger__row a,
  .city-page .city-step a {
    min-height: 44px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .city-solution-reveal {
    opacity: 1 !important;
    clip-path: inset(0) !important;
    transition: none !important;
  }

  .city-proof__media.is-motion-ready .city-media-earth img,
  .city-closing__figure.is-motion-ready .city-media-earth img {
    transform: none !important;
    will-change: auto;
  }

  .city-media-motion__packet {
    display: none !important;
  }

  .city-media-diagram {
    display: block !important;
    opacity: 0.94 !important;
  }

  .city-proof__media.is-motion-ready .city-media-earth,
  .city-closing__figure.is-motion-ready .city-media-earth {
    animation: none !important;
    transform: none !important;
  }

  .city-proof__media.is-motion-ready,
  .city-closing__figure.is-motion-ready {
    border-color: var(--city-frame-line-strong);
  }

  .city-page *,
  .city-page *::before,
  .city-page *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

  .city-step {
    transform: none !important;
  }

  .city-mcp__heading,
  .city-mcp__contract,
  .city-mcp__route span,
  .city-mcp__route i,
  .city-mcp__route i::after,
  .city-mcp__tool,
  .city-mcp__scope {
    animation: none !important;
    clip-path: inset(0) !important;
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
}

@media (max-width: 560px) and (prefers-reduced-motion: reduce) {
  .city-media-diagram {
    display: none !important;
  }
}

@media (forced-colors: active) {
  .city-page a:focus-visible,
  .city-page button:focus-visible,
  .city-page input:focus-visible,
  .city-page select:focus-visible,
  .city-page textarea:focus-visible {
    outline: 3px solid Highlight;
    box-shadow: none;
  }
}

@media print {
  :root {
    color-scheme: light;
  }

  html,
  body.city-page {
    background: var(--city-print-paper) !important;
    color: var(--city-print-ink) !important;
  }

  .city-skip-link {
    display: none !important;
  }

  body.city-page::before,
  body.city-page::after {
    display: none !important;
  }

  .city-proof,
  .city-context,
  .city-explainer,
  .city-steps,
  .city-mcp,
  .city-faq,
  .city-closing,
  .city-footer,
  .city-proof__media,
  .city-ledger__row,
  .city-step,
  .city-closing::before {
    background: var(--city-print-paper) !important;
    color: var(--city-print-ink) !important;
  }

  .city-proof,
  .city-context,
  .city-explainer,
  .city-steps,
  .city-mcp,
  .city-faq,
  .city-closing,
  .city-footer {
    break-inside: avoid;
    border-color: var(--city-print-rule);
  }

  .city-section-heading h2,
  .city-context h2,
  .city-context p,
  .city-explainer__copy h2,
  .city-explainer__copy p,
  .city-explainer__media figcaption,
  .city-section-heading p,
  .city-proof__media figcaption,
  .city-proof__media figcaption span,
  .city-proof__media figcaption strong,
  .city-ledger__row h3,
  .city-ledger__row p,
  .city-step h3,
  .city-step p,
  .city-mcp h2,
  .city-mcp p,
  .city-mcp code,
  .city-mcp dt,
  .city-mcp dd,
  .city-mcp span,
  .city-faq h2,
  .city-faq summary,
  .city-faq p,
  .city-closing__copy h2,
  .city-closing__copy p,
  .city-footer h2,
  .city-footer p,
  .city-footer a {
    color: var(--city-print-ink) !important;
  }

  .city-footer__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .city-footer__group a {
    min-height: 0;
  }
}