.interchange-demo-shell {
    --demo-paper: #f5f1e9;
    --demo-paper-bright: #fffdf8;
    --demo-paper-ink: #172033;
    --demo-paper-muted: #4b5567;
    --demo-paper-rule: #d8cebd;
    --demo-navy: #0d1628;
    --demo-panel: #111c31;
    --demo-panel-2: #17253d;
    --demo-ink: #e8eef6;
    --demo-muted: #a8b5c8;
    --demo-line: #34445e;
    --demo-coral: #f07a58;
    --demo-cyan: #49cce2;
    --demo-warm: #f7ce71;
    padding-top: clamp(4rem, 8vw, 7rem);
    scroll-margin-top: 5.5rem;
}

.interchange-demo-shell :is(button, input, summary, a) {
    touch-action: manipulation;
}

.interchange-demo-shell :is(button, input, summary, a):focus-visible {
    outline: 3px solid var(--interchange-focus);
    outline-offset: 4px;
}

.interchange-demo-shell .interchange-demo-intro {
    display: grid;
    margin-bottom: 1.5rem;
    align-items: end;
    grid-template-columns: minmax(0, 0.9fr) minmax(18rem, 1.1fr);
    gap: clamp(1.5rem, 5vw, 4.5rem);
}

.interchange-demo-shell .interchange-demo-intro h2 {
    max-width: 12ch;
}

.interchange-demo-shell .interchange-demo-intro > div > p:last-child,
.interchange-demo-shell .interchange-demo-intro > p {
    margin-bottom: 0;
}

.interchange-demo-shell .interchange-demo-chapter-links {
    display: grid;
    margin: 1.75rem 0 2.2rem;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.75rem;
}

.interchange-demo-shell .interchange-demo-chapter-links a {
    display: flex;
    min-height: 4.5rem;
    padding: 0.9rem 1rem;
    align-items: center;
    gap: 0.75rem;
    border: 1px solid var(--interchange-border);
    border-radius: 0.7rem;
    background: rgba(255, 255, 255, 0.035);
    text-decoration: none;
}

.interchange-demo-shell .interchange-demo-chapter-links a:hover {
    border-color: rgba(255, 255, 255, 0.24);
    background: rgba(255, 255, 255, 0.07);
}

.interchange-demo-shell .interchange-demo-chapter-links span {
    display: grid;
    flex: 0 0 2rem;
    width: 2rem;
    height: 2rem;
    place-items: center;
    border-radius: 50%;
    background: var(--interchange-accent);
    color: var(--interchange-bg);
    font: 700 0.72rem/1 "JetBrains Mono", ui-monospace, monospace;
}

.interchange-demo-shell .interchange-demo-chapter-links strong {
    display: block;
    font-family: "Space Grotesk", "Inter", ui-sans-serif, sans-serif;
    font-size: 1rem;
}

.interchange-demo-shell .interchange-demo-chapter-links small {
    display: block;
    margin-top: 0.15rem;
    color: var(--interchange-muted);
    font-size: 0.72rem;
}

.interchange-demo-shell .interchange-demo-chapter {
    overflow: hidden;
    border: 1px solid var(--demo-line);
    border-radius: 1rem;
    background: var(--demo-navy);
    color: var(--demo-ink);
    box-shadow: 0 30px 90px rgba(0, 0, 0, 0.28);
    scroll-margin-top: 5.5rem;
}

.interchange-demo-shell .interchange-demo-chapter + .interchange-demo-chapter {
    margin-top: clamp(3rem, 8vw, 6rem);
}

.interchange-demo-shell .interchange-demo-chapter h3,
.interchange-demo-shell .interchange-demo-chapter h4,
.interchange-demo-shell .interchange-demo-chapter h5 {
    color: inherit;
    font-family: "Space Grotesk", "Inter", ui-sans-serif, sans-serif;
    letter-spacing: -0.035em;
}

.interchange-demo-shell .interchange-demo-chapter h3 {
    max-width: 17ch;
    margin: 0;
    font-size: clamp(2rem, 4vw, 3.35rem);
    line-height: 1.02;
}

.interchange-demo-shell .interchange-demo-chapter h3 em {
    color: #a83b22;
    font-style: normal;
}

.interchange-demo-shell .interchange-demo-chapter h4 {
    max-width: none;
    margin: 0 0 0.75rem;
    font-size: clamp(1.35rem, 2.4vw, 1.8rem);
    line-height: 1.08;
}

.interchange-demo-shell .interchange-demo-chapter h5 {
    margin: 0.35rem 0 0.6rem;
    font-size: 1rem;
}

.interchange-demo-shell .interchange-demo-chapter p {
    color: var(--demo-muted);
}

.interchange-demo-shell .icn-hero,
.interchange-demo-shell .icd-hero {
    display: grid;
    padding: clamp(1.5rem, 4vw, 3rem);
    align-items: center;
    grid-template-columns: minmax(0, 0.95fr) minmax(18rem, 1.05fr);
    gap: clamp(1.25rem, 4vw, 3rem);
    border-top: 4px solid var(--interchange-accent);
    background: var(--demo-paper);
    color: var(--demo-paper-ink);
}

.interchange-demo-shell .icn-hero p,
.interchange-demo-shell .icd-hero p {
    margin: 0;
    color: var(--demo-paper-muted);
}

.interchange-demo-shell .icn-hero strong,
.interchange-demo-shell .icd-hero strong {
    color: var(--demo-paper-ink);
}

.interchange-demo-shell .icn-eyebrow,
.interchange-demo-shell .icd-kicker {
    margin: 0 0 0.55rem !important;
    color: #ef9a7e !important;
    font: 700 0.68rem/1.55 "JetBrains Mono", ui-monospace, monospace;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.interchange-demo-shell .icn-hero .icn-eyebrow,
.interchange-demo-shell .icd-hero .icd-kicker {
    color: #a83b22 !important;
}

.interchange-demo-shell .icn-scope,
.interchange-demo-shell .icd-scope {
    display: flex;
    min-height: 3.3rem;
    padding: 0.8rem 1.15rem;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.45rem 1rem;
    border-top: 1px solid var(--demo-line);
    border-bottom: 1px solid var(--demo-line);
    background: var(--demo-panel);
    color: var(--demo-muted);
    font-size: 0.74rem;
    line-height: 1.5;
}

.interchange-demo-shell .icn-scope strong,
.interchange-demo-shell .icd-scope strong {
    color: var(--demo-cyan);
    font: 700 0.66rem/1.4 "JetBrains Mono", ui-monospace, monospace;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.interchange-demo-shell .icn-progress,
.interchange-demo-shell .icd-stepper {
    display: grid;
    margin: 0;
    padding: 0.9rem 1.15rem;
    grid-template-columns: repeat(8, minmax(0, 1fr));
    gap: 0.45rem;
    border-bottom: 1px solid var(--demo-line);
    background: #0b1425;
    list-style: none;
}

.interchange-demo-shell .icd-stepper {
    grid-template-columns: repeat(5, minmax(0, 1fr));
}

.interchange-demo-shell .icn-progress li,
.interchange-demo-shell .icd-stepper li {
    display: flex;
    min-width: 0;
    align-items: center;
    gap: 0.45rem;
    color: var(--demo-muted);
    font-size: 0.66rem;
    line-height: 1.25;
}

.interchange-demo-shell .icn-progress b,
.interchange-demo-shell .icd-stepper b {
    display: grid;
    flex: 0 0 1.65rem;
    width: 1.65rem;
    height: 1.65rem;
    place-items: center;
    border: 1px solid var(--demo-line);
    border-radius: 50%;
    font: 700 0.58rem/1 "JetBrains Mono", ui-monospace, monospace;
}

.interchange-demo-shell .icn-progress [aria-current="step"],
.interchange-demo-shell .icd-stepper [aria-current="step"] {
    color: #ffa98d;
}

.interchange-demo-shell .icn-progress [aria-current="step"] b,
.interchange-demo-shell .icd-stepper [aria-current="step"] b {
    border-color: var(--demo-coral);
    background: var(--demo-coral);
    color: var(--demo-navy);
}

.interchange-demo-shell .icn-progress [data-complete="true"] b,
.interchange-demo-shell .icd-stepper [data-complete="true"] b {
    border-color: var(--demo-cyan);
    color: var(--demo-cyan);
}

.interchange-demo-shell .icn-workspace {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 19rem;
}

.interchange-demo-shell .icn-board {
    min-width: 0;
    padding: 1rem 1.15rem;
}

.interchange-demo-shell .icn-map-caption {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    font-size: 0.78rem;
}

.interchange-demo-shell .icn-map-caption span {
    color: var(--demo-muted);
    font-size: 0.66rem;
}

.interchange-demo-shell .icn-network {
    display: block;
    width: 100%;
    height: auto;
    margin-top: 0.25rem;
}

.interchange-demo-shell .icn-network text {
    fill: var(--demo-ink);
    font-family: "Inter", ui-sans-serif, sans-serif;
    font-size: 15px;
}

.interchange-demo-shell .icn-network .icn-label {
    fill: var(--demo-muted);
    font: 11px "JetBrains Mono", ui-monospace, monospace;
    letter-spacing: 1px;
}

.interchange-demo-shell .icn-network .icn-sub {
    fill: var(--demo-muted);
    font-size: 12px;
}

.interchange-demo-shell .icn-network .icn-name {
    font-size: 17px;
    font-weight: 700;
}

.interchange-demo-shell .icn-territory {
    fill: var(--demo-panel);
    stroke: var(--demo-line);
    stroke-width: 1.3;
}

.interchange-demo-shell .icn-boundary {
    fill: #101b2e;
    stroke: #b1604a;
    stroke-dasharray: 6 5;
    stroke-width: 1.2;
}

.interchange-demo-shell .icn-role,
.interchange-demo-shell .icn-agent {
    fill: var(--demo-panel-2);
    stroke: #6b8ba6;
    stroke-width: 1.5;
}

.interchange-demo-shell .icn-edge {
    fill: none;
    stroke: #52657f;
    stroke-dasharray: 6 6;
    stroke-width: 2;
    opacity: 0.58;
}

.interchange-demo-shell .icn-active-edge {
    stroke: var(--demo-cyan);
    stroke-width: 2.8;
    opacity: 1;
    animation: interchange-demo-trace 650ms linear 1;
}

.interchange-demo-shell .icn-connection {
    stroke: var(--demo-cyan);
    stroke-dasharray: none;
    stroke-width: 3.4;
}

.interchange-demo-shell .icn-pay {
    stroke: var(--demo-warm);
}

.interchange-demo-shell .icn-network [data-glow="true"] {
    stroke: var(--demo-cyan);
    stroke-width: 3;
}

.interchange-demo-shell .icn-network [data-warning="true"] {
    stroke: var(--demo-warm);
    stroke-width: 3;
}

.interchange-demo-shell .icn-highlight {
    fill: #f59a7d !important;
}

.interchange-demo-shell .icn-lab {
    fill: #0c1627;
    stroke: #4e6581;
    stroke-dasharray: 4 4;
    stroke-width: 1.5;
}

.interchange-demo-shell .icn-mobile-map {
    display: none;
}

.interchange-demo-shell .icn-legend,
.interchange-demo-shell .icn-roles {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 1rem;
}

.interchange-demo-shell .icn-legend {
    margin-bottom: 0.85rem;
    color: var(--demo-muted);
    font-size: 0.65rem;
}

.interchange-demo-shell .icn-legend span {
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.interchange-demo-shell .icn-legend i {
    width: 1.5rem;
    border-top: 2px dashed #7594b3;
}

.interchange-demo-shell .icn-legend .icn-solid {
    border-color: var(--demo-cyan);
    border-top-style: solid;
}

.interchange-demo-shell .icn-legend .icn-money {
    border-color: var(--demo-warm);
}

.interchange-demo-shell .icn-roles {
    padding-top: 0.8rem;
    border-top: 1px solid var(--demo-line);
}

.interchange-demo-shell .icn-role-copy {
    min-height: 2.7rem;
    margin: 0.6rem 0 0;
    font-size: 0.72rem;
}

.interchange-demo-shell .icn-story,
.interchange-demo-shell .icd-story {
    min-width: 0;
    padding: 1.35rem;
    background: var(--demo-panel);
}

.interchange-demo-shell .icn-story {
    display: flex;
    flex-direction: column;
    border-left: 1px solid var(--demo-line);
}

.interchange-demo-shell .icn-scene p,
.interchange-demo-shell .icd-scene p {
    margin: 0 0 0.85rem;
    font-size: 0.78rem;
    line-height: 1.65;
}

.interchange-demo-shell .icn-sample,
.interchange-demo-shell .icd-request,
.interchange-demo-shell .icd-decision {
    margin: 0.8rem 0;
    padding: 0.75rem 0.85rem;
    border-left: 2px solid var(--demo-cyan);
    background: rgba(4, 11, 23, 0.44);
    color: #d7e4f1;
    font-size: 0.74rem;
    line-height: 1.65;
}

.interchange-demo-shell .icn-sample.icn-coral {
    border-left-color: var(--demo-coral);
}

.interchange-demo-shell .icn-sample small,
.interchange-demo-shell .icd-mini-label,
.interchange-demo-shell .icd-request small {
    display: block;
    margin-bottom: 0.25rem;
    color: var(--demo-muted);
    font: 0.61rem/1.5 "JetBrains Mono", ui-monospace, monospace;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.interchange-demo-shell .icn-scene dl,
.interchange-demo-shell .icn-ledger,
.interchange-demo-shell .icd-wallet dl,
.interchange-demo-shell .icd-receipt {
    margin: 0;
    font-size: 0.72rem;
}

.interchange-demo-shell .icn-scene dl div,
.interchange-demo-shell .icd-wallet dl > div,
.interchange-demo-shell .icd-receipt > div {
    padding: 0.48rem 0;
    border-bottom: 1px solid var(--demo-line);
}

.interchange-demo-shell .icn-scene dt,
.interchange-demo-shell .icd-wallet dt,
.interchange-demo-shell .icd-receipt dt {
    color: var(--demo-muted);
    font-size: 0.62rem;
}

.interchange-demo-shell .icn-scene dd,
.interchange-demo-shell .icd-wallet dd,
.interchange-demo-shell .icd-receipt dd {
    margin: 0.18rem 0 0;
    overflow-wrap: anywhere;
}

.interchange-demo-shell .icn-pin,
.interchange-demo-shell .icn-scenario label,
.interchange-demo-shell .icd-conditions label {
    display: flex;
    min-height: 2.75rem;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    font-size: 0.72rem;
    line-height: 1.4;
}

.interchange-demo-shell .icn-pin input,
.interchange-demo-shell .icn-scenario input,
.interchange-demo-shell .icd-conditions input {
    flex: 0 0 auto;
    width: 1.05rem;
    height: 1.05rem;
    accent-color: var(--demo-coral);
}

.interchange-demo-shell .icn-gates,
.interchange-demo-shell .icd-services,
.interchange-demo-shell .icd-rules {
    margin: 0.65rem 0;
    padding: 0;
    list-style: none;
}

.interchange-demo-shell .icn-gates li,
.interchange-demo-shell .icd-services li,
.interchange-demo-shell .icd-rules li {
    padding: 0.55rem 0;
    border-bottom: 1px solid var(--demo-line);
    font-size: 0.73rem;
    line-height: 1.5;
}

.interchange-demo-shell .icn-decision {
    margin-top: auto;
    padding: 0.75rem;
    border: 1px solid var(--demo-line);
    border-left: 3px solid var(--demo-cyan);
    color: #cfe3ef;
    font-size: 0.72rem;
    line-height: 1.55;
}

.interchange-demo-shell .icn-decision[data-stopped="true"],
.interchange-demo-shell .icd-decision[data-blocked="true"] {
    border-left-color: var(--demo-warm);
    color: var(--demo-warm);
}

.interchange-demo-shell .icn-btn,
.interchange-demo-shell .icd-btn {
    min-height: 2.75rem;
    padding: 0.62rem 0.85rem;
    border: 1px solid var(--demo-line);
    border-radius: 0.45rem;
    background: transparent;
    color: var(--demo-ink);
    cursor: pointer;
    font: 700 0.72rem/1.3 "Inter", ui-sans-serif, sans-serif;
}

.interchange-demo-shell .icn-btn:hover:not(:disabled),
.interchange-demo-shell .icd-btn:hover:not(:disabled) {
    border-color: #6e829d;
    background: rgba(255, 255, 255, 0.055);
}

.interchange-demo-shell .icn-btn:disabled,
.interchange-demo-shell .icd-btn:disabled {
    color: #8592a4;
    cursor: not-allowed;
    opacity: 0.7;
}

.interchange-demo-shell .icn-next,
.interchange-demo-shell .icd-primary {
    border-color: var(--demo-coral);
    background: var(--demo-coral);
    color: var(--demo-navy);
}

.interchange-demo-shell .icn-next:hover:not(:disabled),
.interchange-demo-shell .icd-primary:hover:not(:disabled) {
    border-color: #ff9677;
    background: #ff9677;
    color: var(--demo-navy);
}

.interchange-demo-shell .icn-controls,
.interchange-demo-shell .icn-scenario,
.interchange-demo-shell .icd-controls {
    display: flex;
    padding: 0.85rem 1.15rem;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.6rem;
    border-top: 1px solid var(--demo-line);
}

.interchange-demo-shell .icn-controls[hidden],
.interchange-demo-shell .icn-scenario[hidden],
.interchange-demo-shell .icn-roles[hidden],
.interchange-demo-shell .icn-pin[hidden],
.interchange-demo-shell .icd-controls[hidden],
.interchange-demo-shell .icd-conditions[hidden],
.interchange-demo-shell .icn-scene[hidden],
.interchange-demo-shell .icd-scene[hidden],
.interchange-demo-shell .icn-readthrough[hidden],
.interchange-demo-shell .icd-fallback[hidden] {
    display: none !important;
}

.interchange-demo-shell .icn-next,
.interchange-demo-shell .icd-next {
    margin-left: auto;
}

.interchange-demo-shell .icn-small,
.interchange-demo-shell .icd-progress {
    color: var(--demo-muted);
    font: 0.68rem/1.4 "JetBrains Mono", ui-monospace, monospace;
}

.interchange-demo-shell .icn-scenario fieldset,
.interchange-demo-shell .icd-conditions {
    display: flex;
    margin: 0;
    padding: 0;
    flex: 1 1 34rem;
    flex-wrap: wrap;
    gap: 0 0.9rem;
    border: 0;
}

.interchange-demo-shell .icn-scenario legend,
.interchange-demo-shell .icd-conditions legend {
    width: 100%;
    margin-bottom: 0.15rem;
    font-size: 0.72rem;
    font-weight: 700;
}

.interchange-demo-shell .icn-ledger {
    display: grid;
    padding: 0.9rem 1.15rem;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1rem;
    border-top: 1px solid var(--demo-line);
    background: #0b1425;
}

.interchange-demo-shell .icn-ledger dt {
    color: var(--demo-muted);
    font: 0.58rem/1.5 "JetBrains Mono", ui-monospace, monospace;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.interchange-demo-shell .icn-ledger dd {
    margin: 0.25rem 0 0;
    font-size: 0.7rem;
    line-height: 1.4;
}

.interchange-demo-shell .icn-readthrough,
.interchange-demo-shell .icd-fallback {
    margin: 0;
    padding: 0.9rem 1.15rem;
    border-top: 1px solid var(--demo-line);
    color: var(--demo-muted);
    font-size: 0.75rem;
    line-height: 1.6;
}

.interchange-demo-shell .icn-outcome,
.interchange-demo-shell .icd-benefits,
.interchange-demo-shell .icd-proof {
    display: grid;
    padding: clamp(1.4rem, 3vw, 2rem);
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: clamp(1.25rem, 3vw, 2rem);
    border-top: 1px solid var(--demo-line);
}

.interchange-demo-shell .icn-outcome p,
.interchange-demo-shell .icd-benefits p,
.interchange-demo-shell .icd-proof p,
.interchange-demo-shell .icn-evidence p,
.interchange-demo-shell .icn-evidence li,
.interchange-demo-shell .icd-details p,
.interchange-demo-shell .icd-details li {
    margin: 0;
    font-size: 0.76rem;
    line-height: 1.65;
}

.interchange-demo-shell .icn-evidence,
.interchange-demo-shell .icd-details {
    padding: 0 1.4rem;
    border-top: 1px solid var(--demo-line);
}

.interchange-demo-shell .icn-evidence summary,
.interchange-demo-shell .icd-details summary {
    min-height: 3.5rem;
    padding: 1rem 0;
    cursor: pointer;
    font-weight: 700;
}

.interchange-demo-shell .icn-evidence > :last-child,
.interchange-demo-shell .icd-details > :last-child {
    margin-bottom: 1.25rem;
}

.interchange-demo-shell .icn-evidence a,
.interchange-demo-shell .icd-proof a {
    display: inline-flex;
    min-height: 2.75rem;
    align-items: center;
    color: #83ddec;
    text-underline-offset: 0.22rem;
}

.interchange-demo-shell .icn-sr,
.interchange-demo-shell .icd-sr {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
}

.interchange-demo-shell .interchange-demo-continue {
    display: flex;
    padding: 1rem 1.4rem;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    border-top: 1px solid var(--demo-line);
    background: rgba(73, 204, 226, 0.06);
}

.interchange-demo-shell .interchange-demo-continue p {
    margin: 0;
    font-size: 0.76rem;
}

.interchange-demo-shell .interchange-demo-continue a {
    flex: 0 0 auto;
    font-size: 0.8rem;
    font-weight: 700;
}

.interchange-demo-shell .icd-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 18rem;
}

.interchange-demo-shell .icd-story {
    border-right: 1px solid var(--demo-line);
}

.interchange-demo-shell .icd-route {
    display: grid;
    margin-bottom: 1.2rem;
    align-items: center;
    grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr) auto minmax(0, 1fr);
    gap: 0.4rem;
}

.interchange-demo-shell .icd-route-node {
    min-width: 0;
    padding: 0.65rem;
    border: 1px solid var(--demo-line);
    border-radius: 0.42rem;
    background: #101a2d;
}

.interchange-demo-shell .icd-route-node[data-active="true"] {
    border-color: var(--demo-cyan);
}

.interchange-demo-shell .icd-route-node span,
.interchange-demo-shell .icd-route-node strong {
    display: block;
    overflow-wrap: anywhere;
}

.interchange-demo-shell .icd-route-node span {
    margin-bottom: 0.2rem;
    color: var(--demo-muted);
    font: 0.56rem/1.4 "JetBrains Mono", ui-monospace, monospace;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.interchange-demo-shell .icd-route-node strong {
    font-size: 0.72rem;
}

.interchange-demo-shell .icd-route-arrow {
    color: var(--demo-cyan);
}

.interchange-demo-shell .icd-request {
    color: var(--demo-ink);
    font-family: "Space Grotesk", "Inter", ui-sans-serif, sans-serif;
    font-size: clamp(1.05rem, 2vw, 1.35rem);
}

.interchange-demo-shell .icd-services li,
.interchange-demo-shell .icd-rules li {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.interchange-demo-shell .icd-services small,
.interchange-demo-shell .icd-services strong {
    display: block;
}

.interchange-demo-shell .icd-services small {
    color: var(--demo-muted);
    font-size: 0.63rem;
}

.interchange-demo-shell .icd-price,
.interchange-demo-shell .icd-rule-state {
    color: var(--demo-cyan);
    font: 700 0.7rem/1.4 "JetBrains Mono", ui-monospace, monospace;
    text-align: right;
}

.interchange-demo-shell .icd-evidence-pair {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
}

.interchange-demo-shell .icd-document {
    padding: 0.9rem;
    border: 1px solid var(--demo-line);
    border-radius: 0.45rem;
    background: #0c1627;
}

.interchange-demo-shell .icd-document ul {
    margin: 0;
    padding-left: 1rem;
    color: var(--demo-muted);
    font-size: 0.7rem;
    line-height: 1.6;
}

.interchange-demo-shell .icd-transfer,
.interchange-demo-shell .icd-budget {
    color: var(--demo-warm);
    font-family: "Space Grotesk", "Inter", ui-sans-serif, sans-serif;
    font-size: clamp(1.6rem, 3vw, 2.25rem);
    font-weight: 700;
}

.interchange-demo-shell .icd-takeaway {
    margin: 1rem 0 0;
    padding: 0.8rem;
    border-top: 1px solid var(--demo-line);
    border-bottom: 1px solid var(--demo-line);
    font-size: 0.76rem;
}

.interchange-demo-shell .icd-takeaway b {
    margin-right: 0.35rem;
    color: var(--demo-cyan);
}

.interchange-demo-shell .icd-wallet {
    min-width: 0;
    padding: 1.35rem;
    background: #0b1425;
}

.interchange-demo-shell .icd-wallet h4 {
    font-size: 1.45rem;
}

.interchange-demo-shell .icd-budget small {
    display: block;
    color: var(--demo-muted);
    font: 0.62rem/1.5 "JetBrains Mono", ui-monospace, monospace;
}

.interchange-demo-shell .icd-meter {
    height: 0.38rem;
    margin: 0.75rem 0;
    overflow: hidden;
    border-radius: 99px;
    background: #26354d;
}

.interchange-demo-shell .icd-meter span {
    display: block;
    width: 50%;
    height: 100%;
    background: var(--demo-coral);
    transition: width 180ms ease;
}

.interchange-demo-shell .icd-caption {
    color: var(--demo-muted);
    font-size: 0.7rem !important;
}

.interchange-demo-shell .icd-actual {
    padding: 0.75rem;
    border: 1px solid var(--demo-line);
    border-radius: 0.45rem;
    background: rgba(73, 204, 226, 0.06);
    font-size: 0.7rem;
}

.interchange-demo-shell .icd-conditions {
    display: block;
    margin-top: 1rem;
}

.interchange-demo-shell .icd-conditions label {
    width: 100%;
}

.interchange-demo-shell .icd-receipt {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 1rem;
}

.interchange-demo-shell .icd-benefits > div > span {
    color: var(--demo-cyan);
    font: 700 0.62rem/1.4 "JetBrains Mono", ui-monospace, monospace;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.interchange-demo-shell .icd-details pre {
    max-width: 100%;
    padding: 0.9rem;
    overflow: auto;
    border: 1px solid var(--demo-line);
    border-radius: 0.45rem;
    background: #08101e;
    color: #bdd9e7;
    font-size: 0.68rem;
    line-height: 1.55;
}

.interchange-demo-shell .icd-proof {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

@keyframes interchange-demo-trace {
    from { stroke-dashoffset: 24; }
    to { stroke-dashoffset: 0; }
}

@media (max-width: 1050px) {
    .interchange-demo-shell .icn-workspace,
    .interchange-demo-shell .icd-layout {
        grid-template-columns: 1fr;
    }

    .interchange-demo-shell .icn-story {
        min-height: 22rem;
        border-top: 1px solid var(--demo-line);
        border-left: 0;
    }

    .interchange-demo-shell .icd-story {
        border-right: 0;
        border-bottom: 1px solid var(--demo-line);
    }

    .interchange-demo-shell .icd-wallet dl {
        display: grid;
        grid-template-columns: repeat(3, minmax(0, 1fr));
        gap: 0 1rem;
    }

    .interchange-demo-shell .icd-conditions {
        display: flex;
    }

    .interchange-demo-shell .icd-conditions label {
        width: auto;
    }
}

@media (max-width: 820px) {
    .interchange-demo-shell .interchange-demo-intro,
    .interchange-demo-shell .icn-hero,
    .interchange-demo-shell .icd-hero {
        grid-template-columns: 1fr;
    }

    .interchange-demo-shell .icn-progress,
    .interchange-demo-shell .icd-stepper {
        grid-template-columns: repeat(4, minmax(0, 1fr));
        row-gap: 0.7rem;
    }

    .interchange-demo-shell .icd-stepper {
        grid-template-columns: repeat(5, minmax(0, 1fr));
    }

    .interchange-demo-shell .icn-progress li,
    .interchange-demo-shell .icd-stepper li {
        flex-direction: column;
        text-align: center;
    }

    .interchange-demo-shell .icn-network {
        display: none;
    }

    .interchange-demo-shell .icn-mobile-map {
        display: grid;
        margin: 0.9rem 0;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 0.55rem;
    }

    .interchange-demo-shell .icn-mobile-map div {
        min-width: 0;
        padding: 0.65rem;
        border: 1px solid var(--demo-line);
        border-radius: 0.4rem;
        font-size: 0.7rem;
        line-height: 1.45;
    }

    .interchange-demo-shell .icn-mobile-map span {
        display: block;
        color: var(--demo-muted);
        font: 0.65rem/1.5 "JetBrains Mono", ui-monospace, monospace;
        text-transform: uppercase;
    }

    .interchange-demo-shell .icn-mobile-map .icn-wide {
        grid-column: 1 / -1;
    }

    .interchange-demo-shell .icn-mobile-map [data-glow="true"] {
        border-color: var(--demo-cyan);
    }

    .interchange-demo-shell .icn-ledger,
    .interchange-demo-shell .icn-outcome,
    .interchange-demo-shell .icd-benefits,
    .interchange-demo-shell .icd-proof {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 600px) {
    .interchange-demo-shell .interchange-demo-chapter-links,
    .interchange-demo-shell .icn-outcome,
    .interchange-demo-shell .icd-benefits,
    .interchange-demo-shell .icd-proof,
    .interchange-demo-shell .icd-evidence-pair,
    .interchange-demo-shell .icd-receipt,
    .interchange-demo-shell .icd-wallet dl {
        grid-template-columns: 1fr;
    }

    .interchange-demo-shell .icn-hero,
    .interchange-demo-shell .icd-hero,
    .interchange-demo-shell .icn-story,
    .interchange-demo-shell .icd-story,
    .interchange-demo-shell .icd-wallet {
        padding: 1.1rem;
    }

    .interchange-demo-shell .icn-progress {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }

    .interchange-demo-shell .icd-stepper {
        grid-template-columns: repeat(3, minmax(0, 1fr));
        padding-inline: 0.45rem;
        gap: 0.55rem 0.2rem;
    }

    .interchange-demo-shell .icn-progress li,
    .interchange-demo-shell .icd-stepper li {
        font-size: 0.65rem;
    }

    .interchange-demo-shell .icn-progress b,
    .interchange-demo-shell .icd-stepper b {
        flex-basis: 1.5rem;
        width: 1.5rem;
        height: 1.5rem;
    }

    .interchange-demo-shell .icd-route {
        grid-template-columns: 1fr;
        gap: 0.25rem;
    }

    .interchange-demo-shell .icd-route-arrow {
        display: none;
    }

    .interchange-demo-shell .icd-route-node {
        border-left: 2px solid var(--demo-line);
    }

    .interchange-demo-shell .icn-ledger {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .interchange-demo-shell .icn-next,
    .interchange-demo-shell .icd-next {
        width: 100%;
        margin-left: 0;
    }

    .interchange-demo-shell .interchange-demo-continue {
        align-items: flex-start;
        flex-direction: column;
    }

    .interchange-demo-shell .icd-services li,
    .interchange-demo-shell .icd-rules li {
        align-items: flex-start;
        flex-direction: column;
        gap: 0.3rem;
    }

    .interchange-demo-shell .icd-price,
    .interchange-demo-shell .icd-rule-state {
        text-align: left;
    }
}

@media (prefers-reduced-motion: reduce) {
    .interchange-demo-shell *,
    .interchange-demo-shell *::before,
    .interchange-demo-shell *::after {
        scroll-behavior: auto !important;
        transition: none !important;
        animation: none !important;
    }
}

@media (forced-colors: active) {
    .interchange-demo-shell .interchange-demo-chapter,
    .interchange-demo-shell .icn-hero,
    .interchange-demo-shell .icd-hero,
    .interchange-demo-shell .icn-btn,
    .interchange-demo-shell .icd-btn,
    .interchange-demo-shell .icd-route-node,
    .interchange-demo-shell .icd-document,
    .interchange-demo-shell .icd-actual {
        border-color: CanvasText;
    }

    .interchange-demo-shell .icn-progress [aria-current="step"] b,
    .interchange-demo-shell .icd-stepper [aria-current="step"] b {
        outline: 2px solid Highlight;
        outline-offset: 2px;
    }
}