:root {
  color-scheme: light;
  --canvas: #f3f6f5;
  --surface: #ffffff;
  --subtle-surface: #f8faf9;
  --muted-surface: #e7ecea;
  --ink: #17211e;
  --text: #283630;
  --muted-text: #52615b;
  --divider: #c8d2ce;
  --control-border: #7a8983;
  --brand: #8c1d4e;
  --brand-strong: #70143c;
  --brand-soft: #f8e8ef;
  --brand-soft-text: #6f143b;
  --focus: #005fcc;
  --success: #216e4e;
  --success-soft: #e5f3eb;
  --warning: #8a4b00;
  --warning-soft: #fff0d5;
  --error: #b42318;
  --error-soft: #fde9e7;
  --information: #175cd3;
  --information-soft: #e8f0fe;
  --display: "Aptos Display", "Segoe UI Variable Display", "Helvetica Neue", Arial, sans-serif;
  --body: "Aptos", "Segoe UI Variable Text", Calibri, Arial, sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --page-padding: clamp(1rem, 4vw, 4.75rem);
  --content-width: 90rem;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--canvas);
  color: var(--text);
  font: 1rem/1.6 var(--body);
}

a {
  color: inherit;
}

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  z-index: 50;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.7rem 1rem;
  background: var(--surface);
  color: var(--ink);
  transform: translateY(-180%);
}

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

.showcase-header,
main,
.showcase-footer {
  width: min(100%, var(--content-width));
  margin-inline: auto;
}

.showcase-header {
  display: grid;
  min-height: 4.5rem;
  grid-template-columns: auto 1fr auto;
  gap: clamp(1.25rem, 2.5vw, 2.5rem);
  align-items: center;
  padding: 0.5rem var(--page-padding);
  background: var(--surface);
  border-bottom: 1px solid var(--divider);
}

.project-identity {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--ink);
  font-size: 1.08rem;
  font-weight: 760;
  text-decoration: none;
}

.section-nav {
  display: flex;
  justify-content: center;
  gap: clamp(0.1rem, 0.7vw, 0.75rem);
}

.section-nav a,
.header-link {
  display: inline-flex;
  min-height: 2.75rem;
  align-items: center;
  padding: 0.4rem 0.6rem;
  border-bottom: 2px solid transparent;
  color: var(--text);
  font-size: 0.95rem;
  text-decoration: none;
}

.section-nav a:hover,
.header-link:hover {
  color: var(--brand-strong);
  border-color: var(--brand);
}

.header-link {
  min-height: 3rem;
  padding-inline: 0.9rem;
  background: var(--brand);
  color: var(--surface);
  border: 0;
  border-radius: 7px;
  font-weight: 700;
}

.header-link:hover {
  background: var(--brand-strong);
  color: var(--surface);
  border-color: transparent;
}

.mobile-menu {
  display: none;
}

h1,
h2,
h3,
p,
figure,
dl,
dd,
ol,
ul {
  margin-top: 0;
}

figure {
  margin-right: 0;
  margin-bottom: 0;
  margin-left: 0;
}

h1,
h2,
h3 {
  color: var(--ink);
  font-family: var(--display);
  font-weight: 730;
  letter-spacing: -0.028em;
}

h1 {
  max-width: 11ch;
  margin-bottom: 1.5rem;
  font-size: clamp(3.35rem, 6.2vw, 6.2rem);
  line-height: 0.98;
}

h2 {
  margin-bottom: 1.25rem;
  font-size: clamp(2.35rem, 4.4vw, 4.5rem);
  line-height: 1.02;
}

h3 {
  margin-bottom: 0.65rem;
  font-size: clamp(1.25rem, 2vw, 1.75rem);
  line-height: 1.18;
}

p {
  max-width: 70ch;
}

dt {
  color: var(--muted-text);
  font: 700 0.76rem/1.4 var(--mono);
}

dd {
  margin: 0.2rem 0 0;
  color: var(--ink);
  font-weight: 700;
}

.hero-section {
  padding: 2rem var(--page-padding) 1.5rem;
  background: var(--ink);
  color: var(--subtle-surface);
}

.hero-main {
  display: grid;
  grid-template-columns: minmax(20rem, 0.72fr) minmax(0, 1.18fr);
  gap: clamp(2.5rem, 5vw, 5rem);
  align-items: start;
}

.hero-copy h1 {
  max-width: 12.5ch;
  margin-bottom: 1.4rem;
  color: var(--subtle-surface);
  font-size: clamp(3.25rem, 4.5vw, 4rem);
  line-height: 0.98;
}

.hero-copy {
  max-width: 28rem;
  padding-top: clamp(4.75rem, 7.5vw, 7rem);
}

.hero-copy .lead {
  max-width: 27.5rem;
  margin-bottom: 0;
  color: var(--divider);
  font-size: clamp(1.0625rem, 1.4vw, 1.1875rem);
  line-height: 1.55;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem 1.25rem;
  align-items: center;
  margin-top: clamp(1.5rem, 2.3vw, 2rem);
}

.hero-actions a {
  display: inline-flex;
  min-height: 3rem;
  align-items: center;
  font-weight: 760;
}

.primary-link {
  padding: 0.65rem 1rem;
  background: var(--brand);
  color: var(--surface);
  border-radius: 7px;
  text-decoration: none;
}

.primary-link:hover {
  background: var(--brand-strong);
}

.secondary-link {
  gap: 0.5rem;
  color: var(--brand-soft);
  text-decoration-thickness: 2px;
  text-underline-offset: 0.3em;
}

.secondary-link:hover {
  color: var(--surface);
}

.hero-visual {
  min-width: 0;
}

.hero-photo img {
  display: block;
  width: 100%;
  height: clamp(30rem, 36vw, 32rem);
  object-fit: cover;
  object-position: 72% center;
  border-radius: 10px;
}

.hero-product {
  position: relative;
  z-index: 1;
  width: min(80%, 38rem);
  margin: -7.5rem 1.25rem 0 auto;
}

.product-window {
  padding: 1rem;
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--control-border);
  border-radius: 10px;
}

.record-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.record-heading h2 {
  max-width: none;
  margin: 0;
  font-size: clamp(1.35rem, 2vw, 1.75rem);
  line-height: 1.1;
}

.status-label {
  display: inline-flex;
  min-height: 2rem;
  align-items: center;
  padding: 0.35rem 0.6rem;
  background: var(--information-soft);
  color: var(--information);
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 750;
  line-height: 1.25;
}

.record-summary,
.record-conditions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: 0.7rem 0 0;
  border-top: 1px solid var(--divider);
}

.record-summary div,
.record-conditions div {
  min-width: 0;
  padding: 0.55rem 0;
  border-bottom: 1px solid var(--divider);
}

.record-summary div:nth-child(even),
.record-conditions div:nth-child(even) {
  padding-left: 0.8rem;
  border-left: 1px solid var(--divider);
}

.record-summary dt,
.record-conditions dt {
  font-size: 0.8125rem;
}

.record-summary dd,
.record-conditions dd {
  margin-top: 0.1rem;
  font-size: 0.84rem;
  line-height: 1.35;
}

.boundary-warning {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 0.65rem;
  padding: 0.65rem 0.75rem;
  background: var(--warning-soft);
  color: var(--warning);
  border-radius: 8px;
  font-size: 0.82rem;
  line-height: 1.35;
}

.warning-mark {
  display: grid;
  width: 1.5rem;
  height: 1.5rem;
  place-items: center;
  border: 2px solid currentColor;
  border-radius: 50%;
  font-weight: 800;
  line-height: 1;
}

.record-footer {
  display: flex;
  gap: 0.7rem;
  align-items: stretch;
  margin-top: 0.7rem;
}

.detail-action {
  display: flex;
  width: fit-content;
  align-items: center;
  padding: 0.5rem 0.75rem;
  background: var(--brand);
  color: var(--surface);
  border-radius: 7px;
  font-size: 0.84rem;
  font-weight: 750;
}

figcaption {
  margin-top: 0.75rem;
  color: var(--muted-text);
  font-size: 0.86rem;
}

.hero-product figcaption {
  max-width: 35rem;
  margin: 0.55rem 0 0;
  color: var(--divider);
  font-size: 0.8rem;
  line-height: 1.4;
}

.hero-product figcaption span {
  display: block;
  margin-top: 0.15rem;
  color: #9eaaa5;
}

.hero-facts {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: 1.5rem 0 0;
  border-top: 1px solid #60706a;
}

.hero-facts div {
  padding: 1rem 1.25rem 0 0;
}

.hero-facts div + div {
  padding-left: 1.25rem;
  border-left: 1px solid #60706a;
}

.hero-facts dt {
  color: var(--divider);
}

.hero-facts dd {
  margin-top: 0.25rem;
  color: var(--subtle-surface);
  font-size: 0.9rem;
  font-weight: 520;
  line-height: 1.45;
}

.journey-section,
.features-section,
.decision-section,
.principles-section,
.design-system-section,
.technology-section {
  padding: clamp(4.5rem, 8vw, 8rem) var(--page-padding);
}

.journey-section,
.principles-section {
  background: var(--surface);
}

.features-section {
  display: grid;
  grid-template-columns: minmax(18rem, 0.64fr) minmax(0, 1.36fr);
  gap: clamp(3rem, 8vw, 8rem);
  align-items: start;
  background: var(--muted-surface);
}

.features-intro {
  position: sticky;
  top: 2rem;
}

.features-intro h2 {
  max-width: 11ch;
}

.features-intro p {
  max-width: 34rem;
  margin-bottom: 0;
  color: var(--muted-text);
  font-size: 1.08rem;
}

.feature-sequence {
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--control-border);
  list-style: none;
}

.feature-sequence li {
  display: grid;
  grid-template-columns: 2.75rem minmax(11rem, 0.65fr) minmax(16rem, 1fr);
  gap: clamp(1rem, 2.5vw, 2.25rem);
  align-items: start;
  padding: 1.7rem 0;
  border-bottom: 1px solid var(--control-border);
}

.feature-step-number {
  color: var(--brand-strong);
  font: 730 2rem/1 var(--display);
  letter-spacing: -0.03em;
}

.feature-step-heading {
  min-width: 0;
}

.feature-actor {
  display: block;
  margin-bottom: 0.45rem;
  color: var(--muted-text);
  font: 700 0.74rem/1.4 var(--mono);
}

.feature-step-heading h3,
.feature-sequence p {
  margin-bottom: 0;
}

.feature-step-heading h3 {
  font-size: clamp(1.35rem, 2vw, 1.75rem);
}

.feature-sequence p {
  color: var(--muted-text);
}

.feature-sequence li:last-child {
  margin-inline: -1rem;
  padding-inline: 1rem;
  background: var(--ink);
  border-bottom-color: var(--ink);
}

.feature-sequence li:last-child .feature-step-number {
  color: var(--brand-soft);
}

.feature-sequence li:last-child .feature-actor,
.feature-sequence li:last-child p {
  color: var(--divider);
}

.feature-sequence li:last-child h3 {
  color: var(--surface);
}

.section-intro {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(18rem, 0.62fr);
  gap: clamp(2rem, 7vw, 7rem);
  align-items: end;
}

.section-intro h2 {
  max-width: 13ch;
  margin-bottom: 0;
}

.section-intro p {
  margin-bottom: 0.6rem;
  color: var(--muted-text);
  font-size: 1.08rem;
}

.journey-rail {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: clamp(3rem, 6vw, 5rem) 0 0;
  padding: 0;
  border-top: 2px solid var(--divider);
  list-style: none;
}

.journey-rail li {
  position: relative;
  display: grid;
  gap: 0.15rem;
  padding: 1.25rem 1rem 0 0;
}

.journey-rail li::before {
  position: absolute;
  top: -0.55rem;
  left: 0;
  width: 0.9rem;
  height: 0.9rem;
  background: var(--surface);
  border: 2px solid var(--control-border);
  border-radius: 50%;
  content: "";
}

.journey-rail .is-complete::before {
  background: var(--success);
  border-color: var(--success);
}

.journey-rail .is-current::before {
  background: var(--brand);
  border-color: var(--brand);
  box-shadow: 0 0 0 4px var(--brand-soft);
}

.journey-rail span {
  color: var(--muted-text);
  font-size: 0.85rem;
}

.journey-rail strong {
  color: var(--ink);
}

.journey-workspace {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(8rem, 0.28fr) minmax(18rem, 0.82fr);
  align-items: stretch;
  padding: clamp(1rem, 2.5vw, 2rem);
  background: var(--canvas);
  border-block: 1px solid var(--divider);
}

.journey-example-heading {
  display: grid;
  grid-template-columns: minmax(9rem, 0.35fr) minmax(0, 1fr);
  gap: 1.5rem;
  align-items: baseline;
  margin-top: clamp(2.5rem, 5vw, 4rem);
  padding: 1rem 0;
  border-top: 1px solid var(--divider);
}

.journey-example-heading span,
.journey-stage-context,
.journey-object > span {
  color: var(--muted-text);
  font: 700 0.76rem/1.4 var(--mono);
}

.journey-example-heading strong {
  max-width: 62ch;
  color: var(--ink);
  font-size: 1rem;
}

.application-panel,
.session-panel {
  display: flex;
  min-width: 0;
  flex-direction: column;
  padding: clamp(1.15rem, 2.5vw, 1.75rem);
  background: var(--surface);
  border: 1px solid var(--control-border);
  border-radius: 10px;
}

.session-panel {
  border-color: var(--success);
}

.journey-stage-header {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 1rem;
  align-items: start;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--divider);
}

.journey-stage-number {
  color: var(--brand-strong);
  font: 730 2.2rem/1 var(--display);
  letter-spacing: -0.03em;
}

.session-panel .journey-stage-number,
.session-panel .journey-stage-context {
  color: var(--success);
}

.journey-stage-header h3 {
  margin: 0.15rem 0 0;
  font-size: clamp(1.45rem, 2.4vw, 2rem);
}

.journey-object {
  margin-top: 1.5rem;
}

.journey-object > strong {
  display: block;
  margin-top: 0.2rem;
  color: var(--ink);
  font: 730 clamp(1.55rem, 2.8vw, 2.35rem)/1.08 var(--display);
  letter-spacing: -0.028em;
}

.application-person {
  margin: 0.35rem 0 0;
  color: var(--ink);
  font-weight: 700;
}

.application-person span {
  color: var(--muted-text);
  font-weight: 500;
}

.application-details {
  margin: 1.5rem 0 0;
  border-top: 1px solid var(--divider);
}

.application-details div {
  display: grid;
  grid-template-columns: 0.45fr 1fr;
  gap: 1rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--divider);
}

.terms-version {
  display: flex;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
  padding: 0.9rem 1rem;
  background: var(--brand-soft);
  color: var(--brand-soft-text);
  border-radius: 8px;
  font-size: 0.9rem;
}

.journey-transition {
  display: grid;
  align-self: center;
  gap: 0.5rem;
  justify-items: center;
  padding-inline: 0.75rem;
  color: var(--brand-strong);
  text-align: center;
  font-size: 0.82rem;
  font-weight: 750;
  line-height: 1.4;
}

.journey-transition b {
  font: 730 2.2rem/1 var(--display);
}

.journey-object p {
  margin: 0.4rem 0 0;
  color: var(--muted-text);
}

.session-checks {
  display: grid;
  gap: 0.65rem;
  margin-top: auto;
  padding-top: 1.25rem;
  border-top: 1px solid var(--divider);
  font-size: 0.9rem;
}

.session-checks b {
  color: var(--success);
}

.decision-section {
  display: grid;
  grid-template-columns: minmax(18rem, 0.72fr) minmax(30rem, 1.18fr);
  gap: clamp(3rem, 8vw, 8rem);
  align-items: center;
  background: var(--ink);
  color: var(--subtle-surface);
}

.decision-copy h2 {
  max-width: 12ch;
  color: var(--subtle-surface);
}

.decision-copy > p {
  max-width: 34rem;
  color: var(--divider);
  font-size: 1.08rem;
}

.decision-points {
  display: grid;
  gap: 0.8rem;
  margin: 2rem 0 0;
  padding: 1.25rem 0 0;
  border-top: 1px solid #60706a;
  list-style: none;
}

.decision-points li {
  position: relative;
  padding-left: 1.4rem;
}

.decision-points li::before {
  position: absolute;
  top: 0.67em;
  left: 0;
  width: 0.45rem;
  height: 0.45rem;
  background: var(--brand-soft);
  border-radius: 50%;
  content: "";
}

.consent-figure {
  min-width: 0;
}

.consent-window {
  padding: clamp(1.25rem, 3vw, 2.25rem);
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--control-border);
  border-radius: 14px;
}

.consent-header {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  justify-content: space-between;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--divider);
}

.consent-header > div > span {
  color: var(--muted-text);
  font-size: 0.85rem;
}

.consent-header h3 {
  margin: 0.2rem 0 0;
  font-size: clamp(1.55rem, 2.5vw, 2.25rem);
}

.consent-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 1rem;
  align-items: center;
  padding: 1rem 0;
  border-bottom: 1px solid var(--divider);
}

.consent-row > div {
  display: grid;
  gap: 0.1rem;
}

.consent-row > div span {
  color: var(--muted-text);
  font-size: 0.88rem;
}

.consent-row > span {
  min-width: 6.5rem;
  padding: 0.4rem 0.55rem;
  border-radius: 6px;
  text-align: center;
  font-size: 0.82rem;
  font-weight: 750;
}

.consent-yes > span {
  background: var(--success-soft);
  color: var(--success);
}

.consent-no > span {
  background: var(--error-soft);
  color: var(--error);
}

.consent-pending > span {
  background: var(--warning-soft);
  color: var(--warning);
}

.consent-note {
  margin: 1.25rem 0 0;
  color: var(--muted-text);
  font-size: 0.88rem;
}

.consent-figure figcaption {
  color: var(--divider);
}

.principles-section {
  display: grid;
  grid-template-columns: minmax(18rem, 0.68fr) minmax(0, 1.32fr);
  gap: clamp(3rem, 8vw, 8rem);
  align-items: start;
}

.principles-section > h2 {
  max-width: 10ch;
  position: sticky;
  top: 2rem;
}

.principles-list {
  border-top: 1px solid var(--divider);
}

.principles-list article {
  display: grid;
  grid-template-columns: minmax(10rem, 0.6fr) minmax(16rem, 1fr);
  gap: 1.25rem;
  align-items: baseline;
  padding: 1.7rem 0;
  border-bottom: 1px solid var(--divider);
}

.principles-list h3,
.principles-list p {
  margin-bottom: 0;
}

.principles-list p {
  color: var(--muted-text);
}

.design-system-section {
  background: var(--muted-surface);
  border-top: 1px solid var(--divider);
}

.design-system-intro {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(19rem, 0.62fr);
  gap: clamp(2rem, 7vw, 7rem);
  align-items: end;
}

.design-system-intro h2 {
  max-width: 13ch;
  margin-bottom: 0;
}

.design-system-intro p {
  margin-bottom: 0;
  color: var(--muted-text);
  font-size: 1.08rem;
}

.design-system-intro .concept-scope {
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px solid var(--control-border);
  color: var(--ink);
  font: 700 0.78rem/1.5 var(--mono);
}

.system-sheet {
  display: grid;
  grid-template-columns: minmax(17rem, 0.72fr) minmax(25rem, 1.28fr);
  margin-top: clamp(3rem, 6vw, 5rem);
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--control-border);
  border-radius: 14px;
}

.system-sheet article {
  min-width: 0;
  padding: clamp(1.4rem, 3vw, 2.5rem);
}

.type-specimen,
.component-specimen {
  border-right: 1px solid var(--divider);
}

.type-specimen,
.colour-specimen {
  border-bottom: 1px solid var(--divider);
}

.specimen-heading {
  display: flex;
  gap: 1rem;
  align-items: baseline;
  justify-content: space-between;
}

.specimen-heading h3 {
  margin-bottom: 0;
}

.specimen-heading > span {
  color: var(--brand-strong);
  font: 700 0.72rem/1.4 var(--mono);
}

.type-sample {
  margin-top: 2rem;
  color: var(--brand);
  font: 730 clamp(4.5rem, 8vw, 7.5rem)/0.82 var(--display);
  letter-spacing: -0.055em;
}

.display-sample {
  margin: 1.5rem 0 0.4rem;
  color: var(--ink);
  font: 730 clamp(1.7rem, 3vw, 2.65rem)/1.02 var(--display);
  letter-spacing: -0.028em;
}

.body-sample {
  max-width: 38ch;
  margin-bottom: 0;
  color: var(--muted-text);
}

.type-scale {
  margin: 2rem 0 0;
  border-top: 1px solid var(--divider);
}

.type-scale div {
  display: grid;
  grid-template-columns: minmax(6rem, 0.7fr) minmax(0, 1fr);
  gap: 1rem;
  padding: 0.65rem 0;
  border-bottom: 1px solid var(--divider);
}

.type-scale dd {
  margin-top: 0;
  font-weight: 520;
}

.colour-foundation {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  margin-top: 2rem;
  border: 1px solid var(--divider);
}

.colour-chip {
  display: flex;
  min-height: 9.5rem;
  flex-direction: column;
  justify-content: space-between;
  padding: 1rem;
}

.colour-chip + .colour-chip {
  border-left: 1px solid var(--divider);
}

.colour-chip span {
  font-weight: 760;
}

.colour-chip code {
  font: 0.76rem/1.4 var(--mono);
}

.colour-ink {
  background: var(--ink);
  color: var(--subtle-surface);
}

.colour-canvas {
  background: var(--canvas);
  color: var(--ink);
}

.colour-action {
  background: var(--brand);
  color: var(--surface);
}

.semantic-colours {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: 1.5rem 0 0;
  border-top: 1px solid var(--divider);
}

.semantic-colours div {
  padding: 0.8rem 0;
  border-bottom: 1px solid var(--divider);
}

.semantic-colours div:nth-child(even) {
  padding-left: 1rem;
  border-left: 1px solid var(--divider);
}

.semantic-colours dt {
  font-family: var(--body);
  font-size: 0.88rem;
}

.semantic-colours dd {
  font: 0.76rem/1.4 var(--mono);
}

.semantic-success dt,
.semantic-success dd {
  color: var(--success);
}

.semantic-warning dt,
.semantic-warning dd {
  color: var(--warning);
}

.semantic-error dt,
.semantic-error dd {
  color: var(--error);
}

.semantic-information dt,
.semantic-information dd {
  color: var(--information);
}

.action-specimens {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

.action-specimens > span {
  display: inline-flex;
  min-height: 2.75rem;
  align-items: center;
  justify-content: center;
  padding: 0.6rem 0.95rem;
  border-radius: 7px;
  font-weight: 750;
}

.action-primary {
  background: var(--brand);
  color: var(--surface);
}

.action-secondary {
  background: var(--surface);
  color: var(--brand-strong);
  border: 1px solid var(--brand);
}

.action-focus {
  background: var(--surface);
  color: var(--ink);
  border: 1px solid var(--control-border);
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

.action-disabled {
  background: var(--muted-surface);
  color: var(--muted-text);
  border: 1px solid var(--divider);
}

.feedback-specimen {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.9rem;
  margin-top: 2rem;
  padding: 1rem;
  background: var(--warning-soft);
  color: var(--warning);
  border-radius: 8px;
}

.feedback-mark {
  display: grid;
  width: 1.5rem;
  height: 1.5rem;
  place-items: center;
  border: 2px solid currentColor;
  border-radius: 50%;
  font-weight: 800;
  line-height: 1;
}

.feedback-specimen > div {
  display: grid;
  gap: 0.2rem;
}

.feedback-specimen > div > span {
  font-size: 0.9rem;
  line-height: 1.45;
}

.system-rules > dl {
  margin: 2rem 0 0;
  border-top: 1px solid var(--divider);
}

.system-rules > dl > div {
  display: grid;
  grid-template-columns: minmax(5rem, 0.35fr) minmax(0, 1fr);
  gap: 1rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--divider);
}

.system-rules dd {
  margin-top: 0;
  font-weight: 520;
}

.system-sheet-footer {
  grid-column: 1 / -1;
  display: flex;
  min-height: 3.5rem;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem clamp(1.4rem, 3vw, 2.5rem);
  background: var(--ink);
  color: var(--divider);
  font: 0.74rem/1.4 var(--mono);
}

.system-sheet-footer span:first-child {
  color: var(--subtle-surface);
  font-weight: 700;
}

.technology-section {
  background: var(--canvas);
  border-top: 1px solid var(--divider);
}

.technology-copy {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(17rem, 0.55fr);
  gap: clamp(2rem, 6vw, 6rem);
  align-items: end;
}

.technology-copy h2 {
  max-width: 15ch;
  margin-bottom: 0;
}

.technology-copy p {
  margin-bottom: 0.5rem;
  color: var(--muted-text);
}

.architecture-flow {
  --diagram-edge: var(--brand);
  position: relative;
  margin-top: clamp(3rem, 6vw, 5rem);
  overflow: hidden;
  background: var(--subtle-surface);
  border: 1px solid var(--control-border);
  border-radius: 14px;
}

.architecture-diagram__canvas {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.75rem;
  align-items: stretch;
  min-height: clamp(32rem, 48vw, 39rem);
  padding: clamp(1.25rem, 3vw, 2.5rem);
}

.architecture-node-card {
  display: grid;
  position: relative;
  z-index: 2;
  align-content: center;
  gap: 0.35rem;
  min-height: 8rem;
  padding: 1rem;
  background: var(--surface);
  border: 1px solid var(--control-border);
  border-radius: 10px;
}

.architecture-node-card--client,
.architecture-node-card--core {
  grid-row: 1 / span 3;
}

.architecture-node-card--client {
  grid-column: 1;
}

.architecture-node-card--core {
  grid-column: 2;
}

.architecture-node-card--record,
.architecture-node-card--async,
.architecture-node-card--integration {
  grid-column: 3 / span 2;
}

.architecture-node-card > span {
  color: var(--muted-text);
  font: 700 0.72rem/1.4 var(--mono);
}

.architecture-node-card > strong {
  color: var(--ink);
  font: 730 1.18rem/1.2 var(--display);
}

.architecture-node-card > small {
  color: var(--muted-text);
  font-size: 0.82rem;
  line-height: 1.4;
}

.architecture-node-card--core {
  background: var(--ink);
  border-color: var(--ink);
}

.architecture-node-card--core > span,
.architecture-node-card--core > small {
  color: var(--divider);
}

.architecture-node-card--core > strong {
  color: var(--surface);
}

.architecture-node-card--record {
  border-color: var(--success);
}

.architecture-node-card--record > span {
  color: var(--success);
}

.architecture-node-card--async {
  border-color: var(--brand);
}

.architecture-node-card--async > span {
  color: var(--brand-strong);
}

.architecture-node-card--integration {
  border-color: var(--information);
}

.architecture-node-card--integration > span {
  color: var(--information);
}

.architecture-flow[data-ready="true"] {
  height: clamp(32rem, 48vw, 39rem);
}

.architecture-flow[data-ready="true"] .architecture-diagram__canvas {
  position: relative;
  display: block;
  width: 100%;
  height: 100%;
  min-height: 0;
  padding: 0;
}

.architecture-flow[data-ready="true"] .architecture-node-card {
  position: absolute;
  top: var(--diagram-y);
  left: var(--diagram-x);
  width: min(15rem, 25%);
  min-height: 8.75rem;
  cursor: grab;
  touch-action: none;
  transform: translate(var(--diagram-drag-x), var(--diagram-drag-y));
  user-select: none;
}

.architecture-flow[data-ready="true"] .architecture-node-card[data-dragging="true"] {
  cursor: grabbing;
}

.architecture-node-card:focus-visible {
  z-index: 3;
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

.architecture-diagram__edges {
  display: none;
}

.architecture-flow[data-ready="true"] .architecture-diagram__edges {
  position: absolute;
  z-index: 1;
  display: block;
  width: 100%;
  height: 100%;
  overflow: visible;
  pointer-events: none;
}

.architecture-diagram__edge {
  fill: none;
  stroke: var(--diagram-edge);
  stroke-linecap: round;
  stroke-width: 2;
}

.architecture-diagram__arrowhead {
  fill: var(--diagram-edge);
}

.architecture-diagram__toolbar {
  display: none;
}

.architecture-flow[data-ready="true"] .architecture-diagram__toolbar {
  position: absolute;
  z-index: 4;
  bottom: 1rem;
  left: 1rem;
  display: block;
}

.architecture-diagram__toolbar button {
  min-height: 2.75rem;
  padding: 0.65rem 0.9rem;
  background: var(--surface);
  color: var(--ink);
  border: 1px solid var(--control-border);
  border-radius: 8px;
  font: 700 0.78rem/1 var(--body);
  cursor: pointer;
}

.architecture-diagram__toolbar button:hover {
  background: var(--brand-soft);
}

.architecture-diagram__toolbar button:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

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

.architecture-help {
  display: none;
  margin: 1rem 0 0;
  color: var(--muted-text);
  font-size: 0.9rem;
}

.architecture-flow[data-ready="true"] + .architecture-help {
  display: block;
}

.showcase-footer {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 2rem;
  align-items: center;
  padding: 2rem var(--page-padding);
  background: var(--ink);
  color: var(--divider);
}

.showcase-footer > span {
  color: var(--surface);
  font-weight: 750;
}

.showcase-footer p {
  margin-bottom: 0;
  text-align: center;
}

.showcase-footer a {
  color: var(--brand-soft);
  font-weight: 700;
  text-underline-offset: 0.25em;
}

@media (max-width: 71rem) {
  .showcase-header {
    grid-template-columns: auto 1fr;
  }

  .section-nav {
    grid-column: 1 / -1;
    grid-row: 2;
    justify-content: flex-start;
    overflow-x: auto;
    padding-bottom: 0.25rem;
  }

  .section-nav a {
    flex: 0 0 auto;
  }

  .header-link {
    justify-self: end;
  }

  .hero-section,
  .decision-section {
    grid-template-columns: 1fr;
  }

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

  .features-intro {
    position: static;
  }

  .features-intro h2 {
    max-width: 13ch;
  }

  .hero-main {
    grid-template-columns: minmax(0, 1fr);
    gap: 2.75rem;
  }

  .hero-copy {
    max-width: 34rem;
    padding-top: 0;
  }

  .hero-visual {
    width: min(100%, 50rem);
    margin-left: auto;
  }

  .decision-copy {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(18rem, 0.8fr);
    gap: 2rem;
  }

  .decision-copy h2 {
    grid-row: 1 / 3;
  }

  .decision-points {
    margin-top: 0;
  }

  .consent-figure {
    max-width: 50rem;
  }

  .journey-workspace {
    grid-template-columns: minmax(0, 1.08fr) minmax(7rem, 0.25fr) minmax(17rem, 0.82fr);
  }

  .principles-section {
    grid-template-columns: minmax(15rem, 0.55fr) minmax(0, 1.45fr);
  }

  .system-sheet {
    grid-template-columns: minmax(16rem, 0.78fr) minmax(22rem, 1.22fr);
  }

  .architecture-flow[data-ready="true"] {
    height: 34rem;
  }
}

@media (max-width: 44rem) {
  h1 {
    font-size: clamp(3rem, 15vw, 4.7rem);
  }

  h2 {
    font-size: clamp(2.2rem, 11vw, 3.4rem);
  }

  .showcase-header {
    position: relative;
    min-height: 4.25rem;
    grid-template-columns: 1fr auto;
    gap: 0.75rem;
    padding-block: 0.45rem;
  }

  .showcase-header > .section-nav,
  .header-link {
    display: none;
  }

  .project-identity {
    font-size: 1rem;
  }

  .mobile-menu {
    display: block;
    justify-self: end;
  }

  .mobile-menu summary {
    display: flex;
    min-height: 2.75rem;
    align-items: center;
    padding: 0.35rem 0.25rem;
    color: var(--ink);
    font-weight: 750;
    cursor: pointer;
    list-style: none;
  }

  .mobile-menu summary::-webkit-details-marker {
    display: none;
  }

  .mobile-menu summary::after {
    margin-left: 0.45rem;
    content: "+";
    font-size: 1.2rem;
    font-weight: 500;
  }

  .mobile-menu[open] summary::after {
    content: "−";
  }

  .mobile-menu nav {
    position: absolute;
    z-index: 20;
    top: calc(100% - 0.25rem);
    right: var(--page-padding);
    display: grid;
    width: min(17rem, calc(100vw - 2 * var(--page-padding)));
    padding: 0.5rem;
    background: var(--surface);
    border: 1px solid var(--control-border);
    border-radius: 8px;
  }

  .mobile-menu nav a {
    display: flex;
    min-height: 2.75rem;
    align-items: center;
    padding: 0.45rem 0.65rem;
    color: var(--ink);
    text-decoration: none;
  }

  .mobile-menu nav a + a {
    border-top: 1px solid var(--divider);
  }

  .hero-section {
    padding: 2rem clamp(1.25rem, 6vw, 1.5rem) 2rem;
  }

  .hero-main {
    gap: 0;
  }

  .section-intro,
  .features-section,
  .decision-copy,
  .principles-section,
  .design-system-intro,
  .technology-copy {
    grid-template-columns: 1fr;
  }

  .decision-copy h2 {
    grid-row: auto;
  }

  .hero-copy h1 {
    max-width: 12.5ch;
    margin-bottom: 1.2rem;
    font-size: clamp(2.625rem, 12vw, 3rem);
  }

  .hero-copy .lead {
    font-size: 1.05rem;
  }

  .hero-actions {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.5rem;
    margin-top: 1.5rem;
  }

  .hero-visual {
    margin-top: 1.5rem;
  }

  .hero-photo img {
    height: 17.5rem;
    object-position: 73% center;
  }

  .hero-product {
    width: 92%;
    margin: -4rem 0 0 auto;
  }

  .product-window {
    padding: 0.85rem;
  }

  .record-heading {
    gap: 0.5rem;
  }

  .record-heading h2 {
    font-size: 1.2rem;
  }

  .record-summary,
  .record-conditions {
    margin-top: 0.55rem;
  }

  .record-summary div,
  .record-conditions div {
    padding-block: 0.45rem;
  }

  .boundary-warning {
    padding: 0.55rem 0.65rem;
  }

  .boundary-warning .warning-mark {
    display: none;
  }

  .record-footer {
    gap: 0.5rem;
    margin-top: 0.55rem;
  }

  .detail-action {
    flex: 0 0 auto;
    padding-inline: 0.6rem;
  }

  .hero-product figcaption {
    margin-top: 0.45rem;
    font-size: 0.78rem;
  }

  .hero-facts {
    display: flex;
    flex-wrap: wrap;
    gap: 0.15rem 0;
    margin-top: 1.5rem;
    padding-top: 0.75rem;
  }

  .hero-facts div {
    display: flex;
    padding: 0;
  }

  .hero-facts div + div {
    padding-left: 0;
    border-left: 0;
  }

  .hero-facts div + div::before {
    margin-inline: 0.45rem;
    color: #60706a;
    content: "·";
  }

  .hero-facts div:nth-child(odd) {
    padding-left: 0;
    border-left: 0;
  }

  .hero-facts div:nth-child(n + 3) {
    border-top: 0;
  }

  .hero-facts dd {
    display: none;
  }

  .journey-rail {
    grid-template-columns: 1fr;
    border-top: 0;
    border-left: 2px solid var(--divider);
  }

  .feature-sequence li {
    grid-template-columns: 2.25rem minmax(0, 1fr);
    gap: 0.75rem 1rem;
    padding-block: 1.4rem;
  }

  .feature-step-number {
    font-size: 1.65rem;
  }

  .feature-sequence p {
    grid-column: 2;
  }

  .journey-rail li {
    padding: 0 0 1.5rem 1.25rem;
  }

  .journey-rail li::before {
    top: 0.25rem;
    left: -0.55rem;
  }

  .journey-workspace {
    grid-template-columns: minmax(0, 1fr);
    gap: 0;
    padding: 1rem;
  }

  .journey-example-heading {
    grid-template-columns: 1fr;
    gap: 0.35rem;
  }

  .journey-transition {
    gap: 0.15rem;
    padding-block: 1.25rem;
  }

  .journey-transition b {
    transform: rotate(90deg);
  }

  .application-details div {
    grid-template-columns: 1fr;
    gap: 0.1rem;
  }

  .terms-version {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.2rem;
  }

  .decision-copy {
    gap: 1rem;
  }

  .decision-copy h2 {
    margin-bottom: 0;
  }

  .decision-points {
    margin-top: 1rem;
  }

  .consent-row {
    grid-template-columns: 1fr;
    gap: 0.65rem;
  }

  .consent-row > span {
    width: fit-content;
    min-width: 0;
  }

  .principles-section > h2 {
    position: static;
  }

  .principles-list article {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }

  .principles-list p {
    grid-column: 1;
  }

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

  .type-specimen,
  .component-specimen {
    border-right: 0;
  }

  .colour-specimen,
  .component-specimen {
    border-bottom: 1px solid var(--divider);
  }

  .colour-foundation {
    grid-template-columns: 1fr;
  }

  .colour-chip {
    min-height: 6.5rem;
  }

  .colour-chip + .colour-chip {
    border-top: 1px solid var(--divider);
    border-left: 0;
  }

  .semantic-colours,
  .system-rules > dl > div {
    grid-template-columns: 1fr;
  }

  .semantic-colours div:nth-child(even) {
    padding-left: 0;
    border-left: 0;
  }

  .system-sheet-footer {
    align-items: flex-start;
    flex-direction: column;
  }

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

  .architecture-node-card--client,
  .architecture-node-card--core,
  .architecture-node-card--record,
  .architecture-node-card--async,
  .architecture-node-card--integration {
    grid-row: auto;
    grid-column: auto;
  }

  .architecture-flow[data-ready="true"] {
    height: 58rem;
  }

  .architecture-flow[data-ready="true"] .architecture-node-card {
    width: 84%;
    min-height: 8rem;
    padding: 0.9rem;
  }

  .architecture-node-card > strong {
    font-size: 1.05rem;
  }

  .architecture-node-card > small {
    font-size: 0.8rem;
  }

  .architecture-help {
    font-size: 0.86rem;
  }

  .showcase-footer {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }

  .showcase-footer p {
    text-align: left;
  }
}

@media (max-width: 22rem) {
  .hero-section {
    padding: 1.5rem 1.25rem 0.75rem;
  }

  .hero-visual {
    margin-top: 1rem;
  }

  .hero-facts {
    margin-top: 1rem;
  }
}

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