/* Hallmark · macrostructure: Map / Diagram + Narrative Workflow · genre: editorial · theme: Editorial neutral · tone: technical-austere · anchor hue: cool-neutral · enrichment: none · nav: N3 Side-rail · footer: Ft2 Inline · contrast: pass (40–41) · slop: pass (42–45) · honest: pass (46) · chrome: pass (47) · tokens: pass (48) · responsive: pass (49) · icons: pass (30) · mobile: pass (34, 49, 50–57) */
/* Hallmark · pre-emit critique: P5 H5 E5 S5 R5 V5 */
@import url("https://fonts.googleapis.com/css2?family=IBM+Plex+Sans:wght@300;400;600&family=Space+Grotesk:wght@400;600&display=swap");
@import url("./tokens.css");

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

html {
  scroll-behavior: smooth;
  overflow-x: clip;
  background: var(--color-paper);
}

body {
  margin: 0;
  min-width: 0;
  overflow-x: clip;
  background: var(--color-paper);
  color: var(--color-ink-soft);
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 300;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
}

button,
a {
  font: inherit;
}

a,
button {
  color: inherit;
}

::selection {
  background: var(--color-ink);
  color: var(--color-inverse);
}

.skip-link {
  position: fixed;
  inset-block-start: var(--space-md);
  inset-inline-start: var(--space-md);
  z-index: var(--z-modal);
  padding: var(--space-sm) var(--space-md);
  transform: translateY(-200%);
  background: var(--color-ink);
  color: var(--color-inverse);
  text-decoration: none;
  white-space: nowrap;
}

.skip-link:focus {
  transform: none;
}

:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 4px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.mobile-bar {
  position: sticky;
  inset-block-start: 0;
  z-index: var(--z-sticky);
  display: flex;
  min-height: 3.5rem;
  align-items: center;
  justify-content: space-between;
  border-block-end: var(--rule-thin) solid var(--color-rule);
  background: var(--color-paper);
  padding-inline: max(var(--space-md), env(safe-area-inset-left));
}

.mobile-brand,
.mobile-current {
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: var(--text-sm);
}

.mobile-brand {
  font-weight: 600;
  letter-spacing: -0.02em;
}

.mobile-current {
  color: var(--color-muted);
  font-variant-numeric: tabular-nums;
}

.menu-toggle {
  display: grid;
  min-width: 2.75rem;
  min-height: 2.75rem;
  place-items: center;
  border: var(--rule-thin) solid var(--color-rule-strong);
  border-radius: var(--radius-sm);
  background: var(--color-paper);
  cursor: pointer;
  transition:
    background-color var(--dur-short) var(--ease-out),
    color var(--dur-short) var(--ease-out),
    transform var(--dur-micro) var(--ease-in-out);
}

.menu-toggle:hover {
  background: var(--color-ink);
  color: var(--color-inverse);
}

.menu-toggle:active {
  transform: translateY(1px);
}

.menu-toggle:disabled,
.index-close:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.menu-icon,
.menu-icon::before,
.menu-icon::after {
  width: 1rem;
  height: var(--rule-thin);
  background: currentColor;
}

.menu-icon {
  position: relative;
}

.menu-icon::before,
.menu-icon::after {
  position: absolute;
  inset-inline-start: 0;
  content: "";
}

.menu-icon::before {
  transform: translateY(-0.32rem);
}

.menu-icon::after {
  transform: translateY(0.32rem);
}

.index {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  display: grid;
  grid-template-rows: auto auto 1fr auto;
  overflow-y: auto;
  background: var(--color-paper);
  padding:
    max(var(--space-lg), env(safe-area-inset-top))
    max(var(--space-lg), env(safe-area-inset-right))
    max(var(--space-lg), env(safe-area-inset-bottom))
    max(var(--space-lg), env(safe-area-inset-left));
  transform: translateX(-102%);
  transition: transform var(--dur-short) var(--ease-in);
}

.index.is-open {
  transform: none;
  transition-timing-function: var(--ease-out);
}

.index-head {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  border-block-end: var(--rule-thin) solid var(--color-rule);
  padding-block-end: var(--space-lg);
}

.index-title {
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: var(--text-index);
  font-weight: 600;
  letter-spacing: -0.035em;
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
}

.index-close {
  min-width: 2.75rem;
  min-height: 2.75rem;
  margin-inline-start: auto;
  border: 0;
  border-block-end: var(--rule-thin) solid var(--color-rule-strong);
  background: transparent;
  cursor: pointer;
  white-space: nowrap;
}

.index-close:hover {
  border-color: var(--color-ink);
}

.index-close:active {
  transform: translateY(1px);
}

.page-switch {
  display: flex;
  gap: var(--space-md);
  padding-block: var(--space-lg) var(--space-sm);
}

.page-switch a {
  border-block-end: var(--rule-thin) solid transparent;
  color: var(--color-muted);
  font-size: var(--text-sm);
  text-decoration: none;
  white-space: nowrap;
}

.page-switch a:hover,
.page-switch a:focus-visible,
.page-switch a[aria-current="page"] {
  border-color: var(--color-ink);
  color: var(--color-ink);
}

.page-switch a:active,
.index-link:active,
.text-link:active,
.inverse-link:active,
.footer a:active {
  color: var(--color-muted);
}

.index-list {
  display: grid;
  align-content: center;
  gap: var(--space-2xs);
  margin: var(--space-lg) 0;
  padding: 0;
  list-style: none;
}

.index-link {
  display: grid;
  min-height: 2.4rem;
  grid-template-columns: 1.8rem minmax(0, 1fr);
  align-items: center;
  gap: var(--space-sm);
  border-block-end: var(--rule-thin) solid transparent;
  color: var(--color-muted);
  font-family: var(--font-display);
  font-size: var(--text-sm);
  text-decoration: none;
  white-space: nowrap;
  transition:
    color var(--dur-short) var(--ease-out),
    border-color var(--dur-short) var(--ease-out);
}

.index-link:hover,
.index-link:focus-visible,
.index-link[aria-current="true"] {
  border-color: var(--color-ink);
  color: var(--color-ink);
}

.index-number {
  font-variant-numeric: tabular-nums;
}

.index-meta {
  display: flex;
  justify-content: space-between;
  gap: var(--space-md);
  border-block-start: var(--rule-thin) solid var(--color-rule);
  padding-block-start: var(--space-md);
  color: var(--color-muted);
  font-size: var(--text-xs);
}

.page,
.content,
.hero,
.chapter,
.section-head,
.chapter > *,
.hero > * {
  min-width: 0;
}

.content {
  width: min(100%, 80rem);
  margin-inline: auto;
  padding:
    var(--space-2xl)
    max(var(--space-md), env(safe-area-inset-right))
    var(--space-3xl)
    max(var(--space-md), env(safe-area-inset-left));
}

.hero {
  display: grid;
  gap: var(--space-2xl);
  border-block-end: var(--rule-thin) solid var(--color-rule);
  padding-block: var(--space-lg) var(--space-3xl);
  scroll-margin-block-start: var(--space-2xl);
}

.hero-copy {
  display: grid;
  align-content: start;
  gap: var(--space-lg);
}

.context-line {
  margin: 0;
  color: var(--color-muted);
  font-size: var(--text-sm);
}

.hero h1 {
  max-width: 13ch;
  min-width: 0;
  margin: 0;
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: var(--text-display);
  font-style: normal;
  font-weight: 600;
  letter-spacing: -0.06em;
  line-height: 0.96;
  overflow-wrap: anywhere;
}

.project-hero h1 {
  max-width: 11ch;
}

.hero-lede {
  max-width: 34ch;
  margin: 0;
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: clamp(var(--text-md), 3vw, var(--text-xl));
  letter-spacing: -0.03em;
  line-height: 1.25;
}

.hero-support,
.target-note {
  max-width: 58ch;
  margin: 0;
}

.text-link,
.inverse-link,
.footer a {
  width: fit-content;
  font-weight: 600;
  text-decoration-thickness: var(--rule-thin);
  text-underline-offset: 0.35em;
  white-space: nowrap;
}

.dashboard-map {
  align-self: end;
  border-block-start: var(--rule-thin) solid var(--color-ink);
}

.dashboard-row {
  display: grid;
  gap: var(--space-2xs);
  border-block-end: var(--rule-thin) solid var(--color-rule);
  padding-block: var(--space-lg);
}

.dashboard-key {
  color: var(--color-muted);
  font-size: var(--text-sm);
}

.dashboard-row strong {
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: var(--text-md);
}

.dashboard-row > span:last-child {
  max-width: 42ch;
}

.chapter {
  display: grid;
  gap: var(--space-2xl);
  border-block-end: var(--rule-thin) solid var(--color-rule);
  padding-block: var(--space-3xl);
  scroll-margin-block-start: var(--space-2xl);
}

.section-head {
  display: grid;
  gap: var(--space-lg);
}

.section-head h2,
.product-close h2 {
  max-width: 18ch;
  min-width: 0;
  margin: 0;
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: clamp(var(--text-xl), 4.5vw, var(--text-3xl));
  font-style: normal;
  font-weight: 600;
  letter-spacing: -0.05em;
  line-height: 1.05;
  overflow-wrap: anywhere;
}

.section-head p {
  max-width: 66ch;
  margin: 0;
  font-size: var(--text-md);
  line-height: 1.5;
}

.system-layout,
.contract-layout {
  display: grid;
  gap: var(--space-2xl);
}

.system-map {
  display: grid;
  gap: 0;
  min-width: 0;
}

.system-root {
  display: grid;
  gap: var(--space-xs);
  border-block: var(--rule-thin) solid var(--color-ink);
  padding-block: var(--space-lg);
}

.system-root span,
.system-group span {
  color: var(--color-muted);
  font-size: var(--text-sm);
  font-variant-numeric: tabular-nums;
}

.system-root strong {
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: var(--text-lg);
  letter-spacing: -0.03em;
}

.system-root p {
  max-width: 58ch;
  margin: 0;
}

.system-trunk {
  margin-inline-start: var(--space-md);
  border-inline-start: var(--rule-thin) solid var(--color-rule-strong);
}

.system-branch {
  position: relative;
  display: grid;
  gap: var(--space-lg);
  margin-inline-start: var(--space-lg);
  border-block-end: var(--rule-thin) solid var(--color-rule);
  padding-block: var(--space-xl);
}

.system-branch::before {
  position: absolute;
  inset-block-start: var(--space-xl);
  inset-inline-start: calc((var(--space-lg) + var(--rule-thin)) * -1);
  width: var(--space-lg);
  border-block-start: var(--rule-thin) solid var(--color-rule-strong);
  content: "";
}

.system-group {
  display: grid;
  grid-template-columns: 2rem minmax(0, 1fr);
  align-items: baseline;
  gap: var(--space-xs);
}

.system-group h3 {
  margin: 0;
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: var(--text-md);
  letter-spacing: -0.025em;
}

.system-branch ul {
  display: grid;
  gap: var(--space-xs);
  margin: 0;
  padding: 0;
  list-style: none;
}

.system-branch li {
  display: grid;
  grid-template-columns: 1rem minmax(0, 1fr);
  gap: var(--space-xs);
  color: var(--color-ink);
}

.system-branch li::before {
  color: var(--color-muted);
  content: "—";
}

.system-branch > p {
  max-width: 48ch;
  margin: 0;
}

.system-branch-optional {
  border-block-end-color: var(--color-rule-strong);
}

.system-tree {
  min-width: 0;
  margin: 0;
  overflow-x: auto;
  border-block-start: var(--rule-thin) solid var(--color-ink);
  border-block-end: var(--rule-thin) solid var(--color-rule);
  background: transparent;
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: clamp(var(--text-sm), 2vw, var(--text-base));
  font-weight: 400;
  line-height: 1.75;
  padding-block: var(--space-lg);
  white-space: pre;
}

.system-tree code {
  font: inherit;
}

.explain-list,
.integration-rules {
  display: grid;
  margin: 0;
  border-block-start: var(--rule-thin) solid var(--color-rule);
}

.explain-list > div,
.integration-rules > div {
  display: grid;
  gap: var(--space-xs);
  border-block-end: var(--rule-thin) solid var(--color-rule);
  padding-block: var(--space-md);
}

.explain-list dt,
.integration-rules dt {
  color: var(--color-ink);
  font-family: var(--font-display);
  font-weight: 600;
}

.explain-list dd,
.integration-rules dd {
  margin: 0;
}

.signal-chain {
  display: grid;
  margin: 0;
  padding: 0;
  border-block-start: var(--rule-thin) solid var(--color-ink);
  list-style: none;
}

.signal-chain li {
  position: relative;
  display: grid;
  gap: var(--space-2xs);
  border-block-end: var(--rule-thin) solid var(--color-rule);
  padding-block: var(--space-md);
}

.signal-chain li:not(:last-child)::after {
  position: absolute;
  inset-inline-end: 0;
  inset-block-end: calc(var(--space-sm) * -1);
  z-index: var(--z-base);
  background: var(--color-paper);
  color: var(--color-muted);
  content: "↓";
}

.signal-chain strong {
  color: var(--color-ink);
  font-family: var(--font-display);
}

.signal-chain span {
  color: var(--color-muted);
  font-size: var(--text-sm);
}

.decision-split {
  display: grid;
  gap: var(--space-xl);
}

.decision-split article {
  border-block-start: var(--rule-thin) solid var(--color-rule-strong);
  padding-block-start: var(--space-lg);
}

.decision-input {
  margin: 0 0 var(--space-xl);
  color: var(--color-muted);
  font-family: var(--font-display);
  font-size: var(--text-sm);
}

.decision-split h3,
.workstream h3 {
  margin: 0;
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: var(--text-lg);
  letter-spacing: -0.03em;
}

.decision-split article > p:last-child {
  max-width: 46ch;
  margin-block-end: 0;
}

.question-ledger,
.done-list,
.day-timeline {
  display: grid;
  margin: 0;
  padding: 0;
  border-block-start: var(--rule-thin) solid var(--color-ink);
  list-style: none;
}

.question-ledger li {
  display: grid;
  gap: var(--space-xs);
  border-block-end: var(--rule-thin) solid var(--color-rule);
  padding-block: var(--space-lg);
}

.question-ledger span {
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: var(--text-md);
  font-weight: 600;
}

.question-ledger p {
  max-width: 58ch;
  margin: 0;
}

.product-close {
  position: relative;
  z-index: var(--z-base);
  isolation: isolate;
  margin-inline: calc(var(--space-md) * -1);
  border-block-end: 0;
  background: var(--color-surface-dark);
  color: var(--color-inverse);
  padding-inline: var(--space-md);
}

.product-close::before {
  position: absolute;
  inset: 0;
  z-index: -1;
  background: var(--color-surface-dark);
  box-shadow: 0 0 0 100vmax var(--color-surface-dark);
  clip-path: inset(0 -100vmax);
  content: "";
}

.product-close h2,
.product-close > div > p,
.project-close p {
  color: var(--color-inverse);
}

.product-close > div > p {
  max-width: 28ch;
  margin: var(--space-md) 0 0;
  font-family: var(--font-display);
  font-size: var(--text-lg);
}

.product-loop {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  border-block: var(--rule-thin) solid var(--color-rule-strong);
  padding-block: var(--space-lg);
  font-family: var(--font-display);
}

.product-note {
  max-width: 56ch;
  margin: 0;
}

.inverse-link {
  color: var(--color-inverse);
}

.day-target {
  display: flex;
  flex-wrap: wrap;
  align-content: start;
  align-items: center;
  gap: var(--space-sm);
  border-block: var(--rule-thin) solid var(--color-rule);
  padding-block: var(--space-lg);
  color: var(--color-ink);
  font-family: var(--font-display);
}

.day-target span:nth-child(even) {
  color: var(--color-muted);
}

.target-note {
  color: var(--color-muted);
  font-size: var(--text-sm);
}

.contract-note {
  align-self: end;
  border-block-start: var(--rule-thin) solid var(--color-rule-strong);
  padding-block-start: var(--space-lg);
}

.contract-note strong {
  color: var(--color-ink);
  font-family: var(--font-display);
}

.contract-note p {
  max-width: 50ch;
  margin-block-end: 0;
}

.workstreams {
  display: grid;
  border-block-start: var(--rule-thin) solid var(--color-ink);
}

.workstream {
  display: grid;
  align-content: start;
  gap: var(--space-lg);
  border-block-end: var(--rule-thin) solid var(--color-rule);
  padding-block: var(--space-xl);
}

.workstream-id {
  color: var(--color-muted);
  font-size: var(--text-sm);
}

.workstream-purpose {
  max-width: 42ch;
  margin: 0;
}

.workstream ul {
  display: grid;
  gap: var(--space-xs);
  margin: 0;
  padding: 0;
  list-style: none;
}

.workstream li {
  display: grid;
  grid-template-columns: 1rem minmax(0, 1fr);
  gap: var(--space-xs);
}

.workstream li::before {
  color: var(--color-muted);
  content: "—";
}

.workstream-output {
  margin: auto 0 0;
  border-block-start: var(--rule-thin) solid var(--color-rule);
  padding-block-start: var(--space-md);
  color: var(--color-ink);
  font-size: var(--text-sm);
}

.workstream-output span {
  color: var(--color-muted);
}

.collaboration-flow {
  display: grid;
  gap: var(--space-md);
  border-block: var(--rule-thin) solid var(--color-ink);
  padding-block: var(--space-lg);
}

.flow-owner {
  display: grid;
  align-content: start;
  gap: var(--space-md);
  min-width: 0;
}

.flow-owner-id {
  color: var(--color-muted);
  font-size: var(--text-sm);
}

.flow-owner h3 {
  margin: 0;
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: var(--text-lg);
  letter-spacing: -0.03em;
}

.flow-owner p {
  margin: 0;
}

.flow-owner ul {
  display: grid;
  gap: var(--space-xs);
  margin: 0;
  padding: 0;
  list-style: none;
}

.flow-owner li {
  display: grid;
  grid-template-columns: 1rem minmax(0, 1fr);
  gap: var(--space-xs);
}

.flow-owner li::before {
  color: var(--color-muted);
  content: "—";
}

.flow-result {
  border-block-start: var(--rule-thin) solid var(--color-rule);
  padding-block-start: var(--space-md);
  color: var(--color-ink);
  font-family: var(--font-display);
}

.flow-direction {
  display: grid;
  min-height: var(--space-xl);
  place-items: center;
  color: var(--color-muted);
}

.flow-direction::before {
  content: "↓";
}

.optional-branch {
  display: grid;
  gap: var(--space-xs);
  border-block-end: var(--rule-thin) solid var(--color-rule);
  padding-block-end: var(--space-lg);
}

.optional-branch strong {
  color: var(--color-ink);
  font-family: var(--font-display);
}

.optional-branch span {
  color: var(--color-ink);
}

.optional-branch p {
  max-width: 62ch;
  margin: var(--space-xs) 0 0;
}

.integration-rules {
  grid-template-columns: minmax(0, 1fr);
}

.day-timeline li {
  display: grid;
  grid-template-columns: 4rem minmax(0, 1fr);
  gap: var(--space-lg);
  border-block-end: var(--rule-thin) solid var(--color-rule);
  padding-block: var(--space-lg);
}

.day-timeline time {
  color: var(--color-muted);
  font-family: var(--font-display);
  font-variant-numeric: tabular-nums;
}

.day-timeline strong {
  color: var(--color-ink);
  font-family: var(--font-display);
}

.day-timeline p {
  max-width: 58ch;
  margin: var(--space-2xs) 0 0;
}

.done-list li {
  display: grid;
  grid-template-columns: 2rem minmax(0, 1fr);
  gap: var(--space-md);
  border-block-end: var(--rule-thin) solid var(--color-rule);
  padding-block: var(--space-md);
}

.done-list span {
  color: var(--color-muted);
  font-family: var(--font-display);
  font-variant-numeric: tabular-nums;
}

.done-list p {
  margin: 0;
}

.guardrail-line {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs) var(--space-lg);
  border-block: var(--rule-thin) solid var(--color-rule);
  padding-block: var(--space-lg);
}

.guardrail-line strong {
  color: var(--color-ink);
  font-family: var(--font-display);
}

.guardrail-line span {
  color: var(--color-muted);
}

.project-close {
  background: var(--color-surface-dark);
  color: var(--color-inverse);
  padding: var(--space-2xl) var(--space-md);
}

.project-close p {
  max-width: 17ch;
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(var(--text-2xl), 6vw, var(--text-4xl));
  letter-spacing: -0.055em;
  line-height: 1.03;
  overflow-wrap: anywhere;
}

.footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-sm) var(--space-lg);
  border-block-start: var(--rule-thin) solid var(--color-rule);
  padding-block: var(--space-lg);
  color: var(--color-muted);
  font-size: var(--text-sm);
}

.footer a,
.footer span {
  white-space: nowrap;
}

body.menu-open {
  overflow: clip;
}

@media (min-width: 40rem) {
  .reveal-ready [data-reveal="block"],
  .reveal-ready [data-reveal="stagger"] > * {
    transition:
      opacity var(--dur-long) var(--ease-out),
      transform var(--dur-long) var(--ease-out);
  }

  .reveal-ready [data-reveal="block"]:not(.is-visible),
  .reveal-ready [data-reveal="stagger"]:not(.is-visible) > * {
    opacity: 0;
    transform: translateY(var(--space-xs));
  }

  .reveal-ready [data-reveal="block"].is-visible,
  .reveal-ready [data-reveal="stagger"].is-visible > * {
    opacity: 1;
    transform: none;
  }

  .reveal-ready [data-reveal="stagger"] > :nth-child(2) {
    transition-delay: 60ms;
  }

  .reveal-ready [data-reveal="stagger"] > :nth-child(3) {
    transition-delay: 120ms;
  }

  .reveal-ready [data-reveal="stagger"] > :nth-child(4) {
    transition-delay: 180ms;
  }

  .reveal-ready [data-reveal="stagger"] > :nth-child(5) {
    transition-delay: 240ms;
  }

  .reveal-ready [data-reveal="stagger"] > :nth-child(6) {
    transition-delay: 300ms;
  }

  .reveal-ready [data-reveal="stagger"] > :nth-child(7) {
    transition-delay: 360ms;
  }

  .content {
    padding-inline: var(--space-xl);
  }

  .hero {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: end;
  }

  .project-hero .target-note {
    grid-column: 2;
  }

  .dashboard-row {
    grid-template-columns: 6rem minmax(0, 1fr);
  }

  .dashboard-row > span:last-child {
    grid-column: 2;
  }

  .system-root {
    grid-template-columns: minmax(12rem, 0.7fr) minmax(0, 1.3fr);
    align-items: baseline;
    column-gap: var(--space-xl);
  }

  .system-root span {
    grid-column: 1 / -1;
  }

  .system-branch {
    grid-template-columns: minmax(9rem, 0.55fr) minmax(12rem, 0.8fr) minmax(0, 1.15fr);
    align-items: start;
    column-gap: var(--space-xl);
  }

  .explain-list > div,
  .integration-rules > div,
  .question-ledger li {
    grid-template-columns: minmax(10rem, 0.42fr) minmax(0, 1fr);
    column-gap: var(--space-xl);
  }

  .signal-chain {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    border-block-end: var(--rule-thin) solid var(--color-rule);
  }

  .signal-chain li {
    border-inline-end: var(--rule-thin) solid var(--color-rule);
    padding: var(--space-lg) var(--space-md);
  }

  .signal-chain li:nth-child(3n) {
    border-inline-end: 0;
  }

  .signal-chain li:not(:last-child)::after {
    inset-inline-end: calc(var(--space-xs) * -1);
    inset-block-end: auto;
    inset-block-start: 50%;
    transform: translateY(-50%);
    content: "→";
  }

  .decision-split {
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
  }

  .product-close {
    margin-inline: calc(var(--space-xl) * -1);
    padding-inline: var(--space-xl);
  }

  .contract-layout {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  }

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

  .workstream {
    border-inline-end: var(--rule-thin) solid var(--color-rule);
    padding-inline: var(--space-lg);
  }

  .workstream:first-child {
    padding-inline-start: 0;
  }

  .workstream:last-child {
    border-inline-end: 0;
    padding-inline-end: 0;
  }

  .collaboration-flow {
    grid-template-columns: minmax(0, 0.9fr) 2rem minmax(0, 1.1fr) 2rem minmax(0, 1fr);
    align-items: start;
  }

  .flow-direction {
    display: grid;
    min-height: 100%;
    align-items: center;
    color: var(--color-muted);
  }

  .flow-direction::before {
    content: "→";
  }

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

  .integration-rules > div {
    display: block;
    padding-inline-end: var(--space-lg);
  }

  .integration-rules dd {
    margin-block-start: var(--space-xs);
  }

  .project-close {
    padding-inline: var(--space-xl);
  }
}

@media (min-width: 60rem) {
  .mobile-bar {
    display: none;
  }

  .index {
    width: 13.5rem;
    transform: none;
    border-inline-end: var(--rule-thin) solid var(--color-rule);
    padding: var(--space-lg);
  }

  .index-close {
    display: none;
  }

  .page {
    margin-inline-start: 13.5rem;
  }

  .content {
    margin-inline: 0;
    padding: var(--space-3xl) clamp(var(--space-xl), 5vw, var(--space-3xl));
  }

  .hero {
    padding-block-start: 0;
  }

  .chapter {
    gap: var(--space-3xl);
  }

  .section-head {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    align-items: start;
    column-gap: var(--space-3xl);
  }
}

@media (min-width: 90rem) {
  .index {
    width: 14.5rem;
  }

  .page {
    margin-inline-start: 14.5rem;
  }

  .content {
    width: min(100%, 90.25rem);
    padding-inline: var(--space-4xl);
  }
}

@media (hover: hover) and (pointer: fine) {
  .index-link:hover,
  .text-link:hover,
  .inverse-link:hover,
  .footer a:hover {
    color: var(--color-ink);
  }

  .product-close .inverse-link:hover {
    color: var(--color-rule-strong);
  }
}

@media (pointer: coarse) {
  .index-link,
  .page-switch a,
  .text-link,
  .inverse-link,
  .footer a {
    min-height: 2.75rem;
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: var(--dur-micro) !important;
    animation-iteration-count: 1 !important;
    transition-duration: var(--dur-micro) !important;
  }

  .reveal-ready [data-reveal="block"],
  .reveal-ready [data-reveal="stagger"] > * {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
}