body.sdchange-case {
  --sd-blue: #2387f7;
  --sd-blue-bright: #55b6ff;
  --sd-blue-deep: #0b2244;
  --sd-blue-ink: #07162f;
  --sd-blue-panel: #dfeeff;
  --sd-blue-panel-soft: #edf6ff;
  --sd-line: rgba(121, 190, 255, 0.22);
  --sd-card: rgba(18, 45, 82, 0.38);
  --sd-card-soft: rgba(64, 142, 221, 0.08);
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.014) 1px, transparent 1px),
    linear-gradient(0deg, rgba(255, 255, 255, 0.014) 1px, transparent 1px),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-soft) 100%);
  background-size: 96px 96px, 96px 96px, auto;
}

body.sdchange-case::before {
  top: 72px;
  right: -160px;
  width: min(780px, 68vw);
  height: min(620px, 72vh);
  border-color: rgba(255, 255, 255, 0.035);
  background:
    linear-gradient(115deg, transparent 0 14%, rgba(255, 255, 255, 0.024) 14.2% 14.6%, transparent 14.8% 31%, rgba(255, 255, 255, 0.024) 31.2% 31.6%, transparent 31.8%),
    linear-gradient(28deg, transparent 0 19%, rgba(255, 255, 255, 0.02) 19.2% 19.6%, transparent 19.8% 54%, rgba(255, 255, 255, 0.02) 54.2% 54.6%, transparent 54.8%),
    linear-gradient(90deg, rgba(255, 255, 255, 0.018) 1px, transparent 1px),
    linear-gradient(0deg, rgba(255, 255, 255, 0.018) 1px, transparent 1px);
  background-size: 100% 100%, 100% 100%, 84px 84px, 84px 84px;
}

.sdchange-case .case-header {
  background: transparent;
}

.sdchange-case .case-header::after {
  background: linear-gradient(180deg, var(--bg) 0 25%, rgba(25, 25, 25, 0) 100%);
}

.sdchange-case .footer-links a {
  min-height: 40px;
}

.sdchange-page {
  --font-size-h1: clamp(34px, 4.2vw, 48px);
  --font-size-h2: 18px;
  --font-size-card-title: 22px;
  --font-size-lead: 18px;
  --font-size-body: 18px;
  --font-size-caption: 16px;
  --line-height-h1: 1.12;
  --line-height-h2: 25px;
  --line-height-body: 27px;
  --line-height-lead: 1.55;
  --space-section: var(--case-rhythm-section);
  --sd-copy-size: 16px;
  --sd-copy-line: 24px;
  --sd-copy-measure: 64ch;
  --space-block: 24px;
  --space-inner: 20px;
  --case-ui-padding: 20px;
  --case-copy-width: 66ch;
  --sd-panel-inset: 28px;
  --sd-content-inset: calc(var(--sd-panel-inset) + 1px);
  --sd-column-gap: 32px;
  --sd-panel-radius: 30px;
  --sd-panel-surface: #1b1b19;
  --sd-panel-line: rgba(255, 255, 255, 0.1);
  --sd-media-frame-padding: 16px;
  --sd-media-frame-padding-mobile: 12px;
}

.sdchange-page .case-eyebrow,
.sdchange-page .case-section__number,
.sd-solution__number,
.sd-kicker {
  color: var(--muted-light);
}

.sd-hero {
  --case-accent: var(--sd-blue);
  gap: 32px;
}

.sdchange-page .sd-hero .case-eyebrow {
  color: var(--case-accent);
}

/* Lift the frame above the dark product UI without changing the shared cover. */
.sdchange-page figure.case-cover.case-cover--sdchange {
  --case-cover-hue: 228;
  --case-cover-background: linear-gradient(
    145deg,
    hsl(var(--case-cover-hue) 42% 31%) 0%,
    hsl(var(--case-cover-hue) 42% 26%) 48%,
    hsl(var(--case-cover-hue) 42% 22%) 100%
  );
}

.sd-hero__content {
  gap: clamp(12px, 1.2vw, 16px);
  max-width: none;
}

.sdchange-page .sd-hero h1 {
  max-width: 900px;
  text-wrap: balance;
  font-size: var(--font-size-h1);
  font-weight: 650;
  line-height: var(--line-height-h1);
}

.sd-hero__lead {
  max-width: 760px;
  font-size: var(--font-size-body);
  font-weight: 400;
  line-height: var(--line-height-lead);
  color: var(--muted);
}

.sd-hero__visual {
  position: relative;
  display: grid;
  place-items: center;
  aspect-ratio: 16 / 9;
  min-width: 0;
  margin: 0;
  padding: clamp(10px, 1.3vw, 16px);
  overflow: hidden;
  border: 1px solid rgba(111, 190, 255, 0.25);
  border-radius: 24px;
  background:
    radial-gradient(circle at 84% 26%, rgba(95, 179, 255, 0.34), transparent 30%),
    linear-gradient(145deg, rgba(24, 111, 205, 0.44), rgba(6, 24, 50, 0.98));
  box-shadow: 0 34px 84px rgba(0, 8, 24, 0.36), inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.sd-hero__visual::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.035);
  pointer-events: none;
}

.sd-hero__screen {
  position: relative;
  z-index: 1;
  display: block;
  min-width: 0;
  margin: 0;
  padding: 0;
  overflow: hidden;
  border: 1px solid rgba(130, 193, 255, 0.28);
  border-radius: 14px;
  background: #0b101c;
  color: inherit;
  font: inherit;
  cursor: zoom-in;
  box-shadow: 0 14px 32px rgba(0, 5, 18, 0.24);
}

.sd-hero__screen--desktop {
  width: auto;
  height: 100%;
  aspect-ratio: 1512 / 1210;
}

.sd-hero__screen--mobile {
  position: absolute;
  right: clamp(18px, 3.2vw, 46px);
  bottom: clamp(16px, 2.8vw, 38px);
  z-index: 2;
  width: clamp(120px, 20%, 230px);
}

figure.case-cover.case-cover--sdchange .sd-hero__screen--mobile {
  height: auto;
  aspect-ratio: 390 / 512;
  background: var(--sd-blue-ink);
}

.sd-hero__screen img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: contain;
}

.sd-hero__screen--desktop img {
  height: 100%;
}

figure.case-cover.case-cover--sdchange .sd-hero__screen--mobile img {
  height: auto;
  object-fit: contain;
}

@media (min-width: 1024px) {
  figure.case-cover.case-cover--sdchange .sd-hero__screen--mobile {
    bottom: -2px;
    width: 22.5%;
  }
}

.sd-hero__screen:focus-visible,
.sd-media-card:focus-visible,
.sd-focus-card:focus-visible,
.sd-scenario-card:focus-visible,
.sd-final-proof__figure:focus-visible,
.sd-testing-evidence__trigger:focus-visible,
.sd-final-flow .sd-flow-gallery__trigger:focus-visible {
  outline: 2px solid rgba(111, 190, 255, 0.9);
  outline-offset: 5px;
}

.sdchange-page .sd-content {
  gap: var(--space-section);
  backdrop-filter: blur(6px);
  --font-size-body: 18px;
}

.sdchange-page .sd-section[id],
.sdchange-page #solution.sd-section {
  --case-section-anchor-inset: 0px;
  padding: 0 var(--sd-content-inset);
  border-top: 0;
  gap: var(--case-rhythm-internal);
}

.sdchange-page .sd-section .case-section__head {
  grid-template-columns: minmax(0, 1fr);
  grid-template-rows: auto;
  align-items: center;
  gap: 0;
  margin-inline-start: 0;
}

.sdchange-page .sd-section h2 {
  max-width: none;
  text-wrap: pretty;
  grid-column: 1;
  grid-row: auto;
  align-self: start;
  font-size: 18px;
  font-weight: 500;
  line-height: 25px;
}

.sd-copy {
  display: grid;
  gap: var(--case-rhythm-flow);
  max-width: var(--sd-copy-measure);
  font-size: var(--sd-copy-size);
}

.sdchange-page .sd-copy p {
  margin: 0;
  color: var(--muted);
  font-size: var(--sd-copy-size);
  font-weight: 400;
  line-height: var(--sd-copy-line);
  text-wrap: pretty;
}

.sdchange-page .sd-section-lead {
  max-width: 66ch;
  color: rgba(241, 241, 239, 0.9);
  font-size: 18px;
  line-height: 27px;
  text-wrap: pretty;
}

.sd-before {
  display: grid;
  align-items: start;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 24px;
  width: calc(100% + 2 * var(--sd-content-inset));
  margin-inline: calc(-1 * var(--sd-content-inset));
}

.sd-before__desktop {
  grid-column: 1 / -1;
}

.sd-before__mobile {
  grid-column: 1 / -1;
  margin-top: -6px;
}

.sd-media-card {
  display: grid;
  min-width: 0;
  margin: 0;
  cursor: zoom-in;
  gap: 14px;
}

.sd-media-card__frame {
  min-width: 0;
  overflow: hidden;
  padding: clamp(10px, 1.5vw, 16px);
  border: 1px solid var(--sd-panel-line);
  border-radius: 20px;
  background: var(--sd-panel-surface);
  box-shadow: none;
}

.sd-media-card img {
  width: 100%;
  height: auto;
  border-radius: 12px;
  object-fit: contain;
}

.sd-before__desktop img {
  object-fit: contain;
}

.sd-media-card figcaption {
  color: rgba(194, 192, 184, 0.78);
}

.sd-research__intro {
  display: grid;
  gap: 8px;
  max-width: var(--case-copy-width);
}

.sd-methods {
  max-width: none;
  margin: 0;
  color: rgba(195, 215, 234, 0.86);
  font-size: 15px;
  line-height: 1.55;
}

.sd-methods strong {
  color: rgba(225, 235, 246, 0.94);
  font-weight: 650;
}

.sdchange-page .sd-key-insight {
  display: grid;
  align-items: start;
  box-shadow: none;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--case-rhythm-flow);
  padding: var(--case-rhythm-internal) 0 0;
  border: 0;
  border-top: 1px solid var(--sd-panel-line);
  border-radius: 0;
  background: transparent;
}

.sd-jtbd__head {
  display: grid;
  gap: var(--case-rhythm-local);
}

.sd-kicker,
.sd-jtbd__head .sd-kicker {
  margin: 0;
}

.sd-jtbd h3 {
  color: rgba(241, 241, 239, 0.96);
  font-size: 16px;
  font-weight: 500;
  line-height: 24px;
}

.sd-jtbd ol {
  display: grid;
  margin: 0;
  padding: 0;
  border-top: 0;
  gap: var(--case-rhythm-flow);
  max-width: var(--sd-copy-measure);
  font-size: var(--sd-copy-size);
}

.sd-jtbd li {
  display: grid;
  gap: 12px;
  grid-template-columns: 24px minmax(0, 1fr);
  padding: 0;
  border-bottom: 0;
  color: rgba(241, 241, 239, 0.9);
  font-size: var(--sd-copy-size);
  line-height: var(--sd-copy-line);
  font-weight: 400;
}

.sd-jtbd li span {
  color: var(--muted-light);
  font-size: 14px;
  font-weight: 400;
  line-height: var(--sd-copy-line);
}

.sdchange-page #task .case-key-callout.sd-task__question {
  margin: 0;
  max-width: none;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  color: rgba(241, 241, 239, 0.96);
  font-size: 22px;
  font-weight: 500;
  line-height: 30px;
  text-wrap: pretty;
  box-shadow: none;
}

.sd-task__summary {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--case-rhythm-flow);
  margin: 0;
  max-width: var(--sd-copy-measure);
  font-size: var(--sd-copy-size);
}

.sd-task__summary > div {
  display: grid;
  align-content: start;
  min-width: 0;
  gap: var(--case-rhythm-local);
}

.sd-task__summary dt {
  color: rgba(194, 192, 184, 0.86);
  font-size: 14px;
  font-weight: 500;
  line-height: 20px;
}

.sd-task__summary dd {
  margin: 0;
  color: rgba(241, 241, 239, 0.9);
  font-size: var(--sd-copy-size);
  font-weight: 400;
  line-height: var(--sd-copy-line);
}

/* Solution and validation share a reading axis and three levels of rhythm.
   Each module owns its copy followed by evidence; frames keep their own size. */
.sdchange-page :is(.sd-solutions, .sd-testing) {
  --font-size-eyebrow: 14px;
  --font-size-card-title: 20px;
  --sd-story-evidence-gap: calc(var(--case-rhythm-internal) + var(--case-rhythm-flow));
}

.sdchange-page .sd-solution-list,
.sdchange-page .sd-evidence-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--case-rhythm-section);
  min-width: 0;
  margin-top: var(--case-rhythm-internal);
}

.sdchange-page .sd-testing > .sd-section-lead {
  max-width: var(--sd-copy-measure);
  font-size: var(--sd-copy-size);
  line-height: var(--sd-copy-line);
}

.sd-solution {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  min-width: 0;
  gap: var(--sd-story-evidence-gap);
  padding: 0;
  border-top: 0;
}

.sd-solution:first-of-type {
  padding-top: 0;
  border-top: 0;
}

.sd-solution:last-child {
  padding-bottom: 0;
}

.sd-solution__copy,
.sd-test-card__copy {
  display: grid;
  align-content: start;
  min-width: 0;
  gap: var(--case-rhythm-internal);
  max-width: var(--sd-copy-measure);
  font-size: var(--sd-copy-size);
}

.sd-solution__head,
.sd-test-card__head {
  display: grid;
  gap: var(--case-rhythm-local);
}

/* Meta: module numbers, rounds and comparison states. */
.sd-solution__number,
.sd-test-card__head > p,
.sd-scenario-card__status,
.sd-testing-evidence__state {
  margin: 0;
  color: var(--muted-light);
  font-size: var(--font-size-eyebrow);
  font-weight: 400;
  letter-spacing: 0;
  line-height: var(--line-height-caption);
}

.sd-solution h3,
.sd-test-card__head h3 {
  margin: 0;
  color: rgba(241, 241, 239, 0.96);
  font-size: var(--font-size-card-title);
  font-weight: 500;
  line-height: 28px;
  text-wrap: pretty;
}

.sd-solution--application {
  padding-bottom: 0;
}

.sdchange-page .sd-comparison-module.sd-scenario-comparison {
  display: grid;
  gap: var(--case-rhythm-internal);
}

.sd-story-heading {
  display: grid;
  gap: var(--case-rhythm-local);
  max-width: var(--sd-copy-measure);
  font-size: var(--sd-copy-size);
}

/* Evidence headings belong to the comparison, separate from rationale. */
.sd-story-heading h4 {
  margin: 0;
  color: rgba(241, 241, 239, 0.92);
  font-size: var(--font-size-h2);
  font-weight: 500;
  line-height: var(--line-height-h2);
  letter-spacing: 0;
  text-transform: none;
  text-wrap: pretty;
}

.sd-final-proof h4 {
  margin: 0;
  color: rgba(241, 241, 239, 0.92);
  font-size: 16px;
  font-weight: 500;
  line-height: 24px;
  text-wrap: pretty;
}

.sd-story-heading p {
  margin: 0;
  color: rgba(241, 241, 239, 0.9);
  font-size: var(--sd-copy-size);
  font-weight: 400;
  line-height: var(--sd-copy-line);
}

.sdchange-page .sd-scenario-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: stretch;
  gap: 24px var(--sd-column-gap);
}

.sdchange-page .sd-comparison-option.sd-scenario-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--case-rhythm-flow);
  align-content: start;
  min-width: 0;
  margin: 0;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}

.sdchange-page .sd-comparison-option__copy.sd-scenario-card__copy {
  display: grid;
  gap: 8px;
  align-content: start;
}

.sd-scenario-card__status {
  align-items: center;
  justify-self: start;
  width: fit-content;
  display: block;
  min-height: 0;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
}

.sd-scenario-card h5 {
  margin: 0;
  color: rgba(241, 241, 239, 0.96);
  font-size: 18px;
  font-weight: 500;
  line-height: 25px;
}

.sd-scenario-card__copy p {
  margin: 0;
  color: rgba(241, 241, 239, 0.9);
  font-size: 16px;
  font-weight: 400;
  line-height: 24px;
}

.sdchange-page .sd-scenario-card__media.sd-media-stage {
  min-width: 0;
  border: 1px solid var(--sd-panel-line);
  border-radius: 20px;
  background: var(--sd-panel-surface);
  box-shadow: none;
}

.sd-scenario-card__pair {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 20px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  min-width: 0;
}

.sd-scenario-card__screen {
  display: block;
  min-width: 0;
  overflow: hidden;
  border: 1px solid rgba(126, 184, 238, 0.24);
  border-radius: 9px;
  background: #12182d;
  aspect-ratio: 512 / 937;
}

.sd-scenario-card__screen img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
}

.sd-scenario-card__arrow {
  display: inline-grid;
  place-items: center;
  align-self: center;
  width: 20px;
  height: 20px;
  color: rgba(125, 187, 247, 0.78);
  font-size: 20px;
  font-weight: 520;
  line-height: 1;
}

.sd-scenario-card[data-case-lightbox-trigger] {
  cursor: zoom-in;
}

.sd-scenario-card__caption {
  margin: 0;
  color: rgba(194, 192, 184, 0.78);
}

.sd-scenario-comparison__note {
  margin: 0;
  color: var(--muted-light);
  font-size: 16px;
  font-weight: 400;
  line-height: 24px;
  text-transform: none;
  letter-spacing: 0;
}

.sdchange-page :is(.sd-solutions, .sd-testing) :is(
    .case-media-caption, .sd-scenario-comparison__note, .sd-testing-evidence__note
  ) {
  color: var(--muted-light);
  font-size: var(--sd-copy-size);
  font-weight: 400;
  line-height: var(--sd-copy-line);
}

.sd-scenario-outcomes {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.sd-scenario-outcome {
  display: grid;
  gap: 8px;
  align-content: start;
  min-width: 0;
  padding: 17px 18px;
  border: 1px solid rgba(104, 176, 243, 0.15);
  border-left: 2px solid rgba(77, 169, 255, 0.62);
  border-radius: 0 16px 16px 0;
  background: rgba(9, 27, 50, 0.46);
}

.sd-scenario-outcome--decision {
  border-color: rgba(92, 181, 255, 0.22);
  border-left-color: rgba(91, 184, 255, 0.9);
  background: rgba(21, 64, 105, 0.32);
}

.sd-scenario-outcome span {
  color: rgba(106, 191, 255, 0.88);
  font-size: 11px;
  font-weight: 720;
  letter-spacing: 0.05em;
  line-height: 1.35;
  text-transform: uppercase;
}

.sd-scenario-outcome p {
  margin: 0;
  color: rgba(202, 216, 230, 0.9);
  font-size: 14.5px;
  line-height: 1.55;
}

.sdchange-page .sd-decision-module--proof {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 320px);
  gap: clamp(32px, 5vw, 64px);
  align-items: center;
  min-width: 0;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}

.sd-final-proof__copy {
  display: grid;
  gap: 12px;
  align-content: center;
  max-width: 46ch;
}

.sd-final-proof__label {
  margin: 0;
  color: rgba(102, 191, 255, 0.9);
  font-size: 11px;
  font-weight: 720;
  letter-spacing: 0.055em;
  line-height: 1.35;
}

.sd-final-proof__copy > p:last-child {
  margin: 0;
  color: rgba(207, 220, 233, 0.9);
  font-size: 15.5px;
  line-height: 1.58;
}

.sdchange-page .sd-final-proof__figure.sd-media-stage {
  display: grid;
  gap: 12px;
  justify-items: center;
  width: 100%;
  min-width: 0;
  margin: 0;
  padding: 20px;
  border: 1px solid var(--case-card-border);
  border-radius: var(--case-panel-radius);
  background: var(--case-ui-surface);
  box-shadow: none;
}

.sd-final-proof__figure[data-case-lightbox-trigger] {
  cursor: zoom-in;
}

.sd-final-proof__media {
  width: min(100%, 230px);
  overflow: hidden;
  border: 1px solid rgba(85, 182, 255, 0.48);
  border-radius: 18px;
  background: var(--sd-blue-ink);
  box-shadow: 0 18px 42px rgba(0, 8, 24, 0.24);
}

.sd-final-proof__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
}

.sd-tradeoff {
  display: grid;
  align-items: start;
  max-width: 840px;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--case-rhythm-local);
  padding: 0;
  border-left: 0;
}

/* Rationale labels. */
.sd-tradeoff span {
  color: var(--muted-light);
  font-size: var(--sd-copy-size);
  font-weight: 500;
  line-height: var(--sd-copy-line);
  letter-spacing: 0;
}

.sd-tradeoff p {
  margin: 0;
  color: rgba(241, 241, 239, 0.9);
  font-size: 16px;
  font-weight: 400;
  line-height: 24px;
}

.sdchange-page .sd-solutions .sd-decision-module > .sd-focus-card.sd-media-stage {
  position: relative;
  justify-items: center;
  min-width: 0;
  margin: 0;
  border: 1px solid var(--sd-panel-line);
  border-radius: 20px;
  background: var(--sd-panel-surface);
  box-shadow: none;
  overflow: visible;
}

.sd-focus-card .sd-flow-crop {
  width: min(100%, 270px);
}

.sd-solutions .sd-solution--single > .sd-focus-card > img {
  display: block;
  width: min(100%, 304px);
  max-width: 100%;
  height: auto;
  border: 1px solid var(--sd-line);
  border-radius: 15px;
  background: var(--sd-blue-ink);
  object-fit: contain;
  box-shadow: 0 16px 34px rgba(0, 8, 24, 0.24);
}

.sd-focus-card[data-case-lightbox-trigger] {
  cursor: zoom-in;
}

.sd-flow-crop {
  position: relative;
  aspect-ratio: 0.42;
  min-width: 0;
  overflow: hidden;
  border: 1px solid rgba(25, 76, 132, 0.12);
  border-radius: 18px;
  background: #e5f0ff;
  box-shadow: 0 22px 48px rgba(7, 31, 66, 0.18);
}

.sd-flow-crop img {
  position: absolute;
  top: -17%;
  width: auto;
  max-width: none;
  height: 125%;
}

.sd-flow-crop--start img {
  left: -52%;
}

.sd-flow-crop--check img {
  left: -146%;
}

.sd-flow-crop--complete img {
  left: -378%;
}

.sdchange-page .sd-evidence-card {
  display: grid;
  align-content: start;
  min-width: 0;
  box-shadow: none;
  gap: var(--sd-story-evidence-gap);
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
}

/* Validation rounds share compact copy and one comparison after round two. */
.sdchange-page .sd-testing__grid {
  gap: calc(var(--case-rhythm-internal) + var(--case-rhythm-flow));
  margin-top: 0;
}

.sdchange-page .sd-testing .sd-test-card {
  gap: var(--case-rhythm-internal);
}

.sd-test-card__copy {
  gap: var(--case-rhythm-flow);
}

.sd-test-card__head > p {
  text-transform: none;
}

.sd-test-card__summary {
  display: grid;
  gap: var(--case-rhythm-local);
  min-width: 0;
}

.sd-test-card__conclusion > span {
  color: var(--muted-light);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0;
  line-height: 20px;
  text-transform: none;
}

.sd-test-card__summary p,
.sd-test-card__conclusion {
  margin: 0;
  color: rgba(241, 241, 239, 0.9);
  font-size: var(--sd-copy-size);
  font-weight: 400;
  line-height: var(--sd-copy-line);
}

.sd-test-card__conclusion {
  display: grid;
  gap: 7px;
  padding-top: 18px;
  border-top: 1px solid rgba(104, 176, 243, 0.12);
}

.sdchange-page .sd-comparison-module.sd-testing-evidence {
  display: grid;
  gap: var(--case-rhythm-internal);
  margin: 0;
}

.sd-story-heading .sd-testing-evidence__note {
  margin: 0;
  color: var(--muted-light);
  font-size: 16px;
  font-weight: 400;
  line-height: 24px;
}

.sdchange-page .sd-testing-evidence__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: stretch;
  gap: 24px var(--sd-column-gap);
}

.sdchange-page .sd-testing-evidence__panel.sd-comparison-option {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  grid-template-rows: auto auto 1fr;
  gap: var(--case-rhythm-flow);
  min-width: 0;
  margin: 0;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}

.sdchange-page .sd-testing-evidence__copy.sd-comparison-option__copy {
  display: grid;
  gap: 8px;
  align-content: start;
}

.sd-testing-evidence__state {
  align-items: center;
  justify-self: start;
  width: fit-content;
  display: block;
  min-height: 0;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
}

.sd-testing-evidence h5 {
  margin: 0;
  color: rgba(241, 241, 239, 0.96);
  font-size: 18px;
  font-weight: 500;
  line-height: 25px;
}

.sdchange-page .sd-testing-evidence__trigger.sd-media-stage {
  min-width: 0;
  margin: 0;
  color: inherit;
  cursor: zoom-in;
  box-shadow: none;
  appearance: none;
  border: 1px solid var(--sd-panel-line);
  border-radius: 20px;
  background: var(--sd-panel-surface);
}

.sdchange-page .sd-testing-evidence__trigger .sd-media-stage__frame {
  display: block;
  width: 100%;
  aspect-ratio: 19 / 25;
  overflow: hidden;
  border: 1px solid var(--sd-line);
  border-radius: 9px;
  background: var(--sd-blue-ink);
}

.sdchange-page .sd-testing-evidence__trigger img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: 100%;
  object-fit: cover;
}

.sd-testing-evidence figcaption {
  margin: 0;
  color: rgba(170, 192, 213, 0.78);
  font-size: 12.5px;
  line-height: 1.5;
}

@media (min-width: 1025px) {
  .sdchange-page :is(.sd-scenario-grid, .sd-testing-evidence__grid) {
    row-gap: var(--case-rhythm-flow);
  }

  .sdchange-page :is(.sd-scenario-grid, .sd-testing-evidence__grid) > .sd-comparison-option {
    grid-row: span 3;
    grid-template-rows: subgrid;
  }
}

@media (min-width: 901px) and (max-width: 1024px) {
  .sdchange-page .sd-testing-evidence__grid {
    row-gap: var(--case-rhythm-flow);
  }

  .sdchange-page .sd-testing-evidence__grid > .sd-comparison-option {
    grid-row: span 3;
    grid-template-rows: subgrid;
  }
}

@media (max-width: 900px) {
  .sdchange-page .sd-testing-evidence__grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

.sd-final-flow .sd-flow-gallery {
  min-width: 0;
}

.sdchange-page .sd-final-flow .sd-flow-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: stretch;
  min-width: 0;
  gap: 32px var(--sd-column-gap);
}

.sdchange-page .sd-final-flow .sd-flow-step {
  display: grid;
  gap: 18px;
  align-content: start;
  min-width: 0;
  margin: 0;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}

.sdchange-page .sd-final-flow .sd-flow-step__copy {
  display: grid;
  gap: 10px;
  min-width: 0;
  margin: 0;
}

.sd-final-flow .sd-flow-gallery__copy h3 {
  margin: 0;
  color: rgba(241, 241, 239, 0.96);
  font-size: 18px;
  font-weight: 500;
  line-height: 25px;
}

.sd-final-flow .sd-flow-gallery__copy h3 span {
  display: inline-block;
  margin-right: 0.08em;
  font-variant-numeric: tabular-nums;
  color: var(--muted-light);
  font-size: 14px;
  font-weight: 400;
  letter-spacing: 0;
  vertical-align: baseline;
}

.sd-final-flow .sd-flow-gallery__copy p {
  margin: 0;
  color: rgba(241, 241, 239, 0.9);
  font-size: 16px;
  font-weight: 400;
  line-height: 24px;
}

.sdchange-page .sd-final-flow .sd-flow-gallery__trigger {
  display: block;
  width: 100%;
  min-width: 0;
  margin: 0;
  padding: 0;
  border: 0;
  border-radius: 18px;
  background: transparent;
  color: inherit;
  font: inherit;
  cursor: zoom-in;
  appearance: none;
}

.sdchange-page .sd-final-flow .sd-flow-step__media.sd-media-stage {
  min-width: 0;
  box-shadow: none;
  border: 1px solid var(--sd-panel-line);
  border-radius: 20px;
  background: var(--sd-panel-surface);
}

.sd-final-flow .sd-flow-gallery__item--compact .sd-flow-gallery__frame {
  align-items: center;
}

.sd-final-flow .sd-flow-gallery__frame img {
  display: block;
  width: min(100%, 320px);
  max-width: 100%;
  height: auto;
  border: 1px solid rgba(129, 190, 247, 0.16);
  border-radius: 12px;
  background: #0b101c;
  object-fit: contain;
}

@media (min-width: 901px) {
  .sd-final-flow .sd-flow-gallery__item:nth-child(1) .sd-flow-gallery__frame img {
    width: min(100%, 335px);
  }

  .sd-final-flow .sd-flow-gallery__item:nth-child(2) .sd-flow-gallery__frame img {
    width: min(100%, 307px);
  }

  .sd-final-flow .sd-flow-gallery__item:nth-child(n + 3) .sd-flow-gallery__frame {
    padding-block: 4px;
  }

  .sd-final-flow .sd-flow-gallery__item:nth-child(3) .sd-flow-gallery__frame {
    align-items: center;
  }

  .sd-final-flow .sd-flow-gallery__item:nth-child(3) .sd-flow-gallery__frame img {
    width: min(100%, 284px);
  }

  .sd-final-flow .sd-flow-gallery__item:nth-child(4) .sd-flow-gallery__frame img {
    width: min(100%, 390px);
  }
}

.sd-next-case {
  margin-top: clamp(8px, 2vw, 18px);
}

.sd-next-case a {
  position: relative;
  display: grid;
  gap: 8px;
  min-height: 176px;
  padding: clamp(24px, 3.5vw, 38px) clamp(74px, 8vw, 104px) clamp(24px, 3.5vw, 38px) clamp(24px, 3.5vw, 38px);
  overflow: hidden;
  border: 1px solid rgba(101, 179, 248, 0.16);
  border-radius: 22px;
  background:
    radial-gradient(circle at 88% 38%, rgba(72, 162, 246, 0.2), transparent 28%),
    linear-gradient(135deg, rgba(18, 61, 106, 0.74), rgba(10, 30, 56, 0.72));
  transition: border-color 180ms ease, transform 180ms ease, background-color 180ms ease;
}

.sd-next-case a::after {
  content: "→";
  position: absolute;
  top: 50%;
  right: clamp(24px, 3.2vw, 38px);
  color: rgba(122, 199, 255, 0.9);
  font-size: 38px;
  font-weight: 450;
  line-height: 1;
  transform: translateY(-50%);
  transition: transform 180ms ease;
}

.sd-next-case a:hover,
.sd-next-case a:focus-visible {
  border-color: rgba(112, 192, 255, 0.36);
  transform: translateY(-2px);
}

.sd-next-case a:hover::after,
.sd-next-case a:focus-visible::after {
  transform: translate(5px, -50%);
}

.sd-next-case span {
  color: rgba(105, 190, 255, 0.8);
  font-size: 11px;
  font-weight: 680;
  letter-spacing: 0.045em;
  text-transform: uppercase;
}

.sd-next-case strong {
  color: rgba(241, 247, 253, 0.97);
  font-size: clamp(24px, 2.6vw, 32px);
  font-weight: 590;
  line-height: 1.2;
}

.sd-next-case p {
  max-width: 600px;
  color: rgba(190, 207, 223, 0.84);
  font-size: 15px;
  line-height: 1.5;
}

.sdchange-case .case-lightbox {
  position: fixed;
  inset: 0;
  z-index: 1000;
  width: 100%;
  max-width: none;
  height: 100dvh;
  max-height: none;
  margin: 0;
  padding:
    max(18px, env(safe-area-inset-top))
    max(18px, env(safe-area-inset-right))
    max(18px, env(safe-area-inset-bottom))
    max(18px, env(safe-area-inset-left));
  overflow: hidden;
  border: 0;
  background: transparent;
  color: var(--ink);
  opacity: 0;
  pointer-events: none;
  transition: opacity 180ms ease-out;
}

.sdchange-case .case-lightbox:not([open]) {
  display: none;
}

.sdchange-case .case-lightbox[open] {
  display: grid;
  place-items: stretch;
}

.sdchange-case .case-lightbox.is-open {
  opacity: 1;
  pointer-events: auto;
}

.sdchange-case .case-lightbox::backdrop {
  background: rgba(0, 0, 0, 0.85);
}

.sdchange-case .case-lightbox__panel {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  gap: clamp(10px, 1.5dvh, 16px);
  width: min(96vw, 1680px);
  max-width: 100%;
  height: 100%;
  max-height: 100%;
  min-height: 0;
  margin: 0 auto;
  padding: 0;
  overflow: hidden;
  border: 0;
  background: transparent;
  box-shadow: none;
  pointer-events: auto;
}

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

.sdchange-case .case-lightbox__toolbar {
  position: relative;
  z-index: 3;
  display: flex;
  gap: 7px;
  align-items: center;
  justify-self: end;
  max-width: 100%;
  padding: 6px;
  border-radius: 999px;
  box-shadow: 0 14px 38px rgba(0, 0, 0, 0.36);
  backdrop-filter: blur(14px);
  border: 1px solid rgba(241, 241, 239, 0.1);
  background: rgba(12, 16, 22, 0.88);
}

.sdchange-case .case-lightbox__control {
  display: inline-grid;
  place-items: center;
  width: 38px;
  height: 38px;
  flex: 0 0 38px;
  padding: 0;
  border-radius: 999px;
  font: inherit;
  font-size: 18px;
  line-height: 1;
  cursor: pointer;
  transition: border-color 160ms ease, background-color 160ms ease, color 160ms ease;
  border: 1px solid rgba(241, 241, 239, 0.1);
  background: rgba(0, 0, 0, 0.42);
  color: rgba(241, 241, 239, 0.9);
}

.sdchange-case .case-lightbox__control:hover,
.sdchange-case .case-lightbox__control:focus-visible {
  border-color: rgba(241, 241, 239, 0.22);
  background: rgba(255, 255, 255, 0.07);
  color: var(--ink);
}

.sdchange-case .case-lightbox__control:focus-visible {
  outline: 2px solid rgba(91, 181, 255, 0.9);
  outline-offset: 2px;
}

.sdchange-case .case-lightbox__control[hidden] {
  display: none;
}

.sdchange-case .case-lightbox__counter {
  min-width: 50px;
  font-variant-numeric: tabular-nums;
  text-align: center;
  color: var(--muted-light);
  font-size: 14px;
  font-weight: 400;
  line-height: 20px;
}

.sdchange-case .case-lightbox__close {
  width: 40px;
  height: 40px;
  flex-basis: 40px;
  background: rgba(255, 255, 255, 0.085);
  font-size: 23px;
}

.sdchange-case .case-lightbox__viewport {
  display: grid;
  grid-template-rows: minmax(0, 1fr);
  place-items: safe center;
  align-self: stretch;
  width: 100%;
  height: auto;
  min-width: 0;
  min-height: 0;
  overflow: hidden;
  padding: 0;
  overscroll-behavior: contain;
  scrollbar-color: rgba(255, 255, 255, 0.28) transparent;
  touch-action: pan-x pan-y pinch-zoom;
}

.sdchange-case .case-lightbox__image {
  display: block;
  width: auto;
  max-width: 100%;
  height: auto;
  max-height: 100%;
  min-width: 0;
  object-fit: contain;
  box-shadow: 0 28px 80px rgba(0, 0, 0, 0.42);
  pointer-events: auto;
  touch-action: pan-x pan-y pinch-zoom;
  border: 0;
  background: transparent;
  border-radius: 0;
}

.sdchange-case .case-lightbox__viewport[data-lightbox-mode="fit"],
.sdchange-case .case-lightbox__image[data-lightbox-mode="fit"] {
  touch-action: pan-y pinch-zoom;
}

.sdchange-case .case-lightbox__image:not([src]) {
  visibility: hidden;
}

.sdchange-case .case-lightbox__caption {
  position: relative;
  z-index: 3;
  justify-self: center;
  width: auto;
  max-width: min(72ch, 100%);
  height: auto;
  margin: 0;
  padding: 9px 13px;
  overflow: visible;
  clip: auto;
  text-align: center;
  box-shadow: 0 12px 34px rgba(0, 0, 0, 0.32);
  backdrop-filter: blur(12px);
  pointer-events: none;
  border: 1px solid rgba(241, 241, 239, 0.14);
  background: rgba(12, 16, 22, 0.88);
  border-radius: 14px;
  color: rgba(241, 241, 239, 0.94);
}

@media (max-width: 1024px) {
  .sdchange-page .sd-scenario-grid,
  .sd-scenario-outcomes {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 900px) {
  .sdchange-page .sd-key-insight,
  .sdchange-page .sd-evidence-grid,
  .sd-task__summary,
  .sdchange-page .sd-scenario-grid {
    grid-template-columns: 1fr;
  }

  .sdchange-page .sd-evidence-grid {
    width: 100%;

    min-width: 0;
  }

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

  .sd-before__desktop,
  .sd-before__mobile {
    grid-column: auto;
    margin-top: 0;
  }

  .sd-final-proof__copy {
    max-width: 72ch;
  }

  .sd-final-proof__media {
    width: min(100%, 260px);
  }

  .sd-focus-card .sd-flow-crop {
    width: min(100%, 270px);
  }

  .sdchange-page .sd-final-flow .sd-flow-grid {
    grid-template-columns: minmax(0, 1fr);
    grid-auto-rows: auto;
  }

  .sd-final-flow .sd-flow-gallery__trigger {
    width: min(100%, 520px);
    height: auto;
    margin: 0 auto;
  }

  .sd-final-flow .sd-flow-gallery__frame {
    height: auto;
  }
}

@media (max-width: 620px) {
  body.sdchange-case::before {
    right: -210px;
    width: 620px;
    opacity: 0.5;
  }

  .sd-testing,
  .sd-final-flow,
  .sd-testing > *,
  .sd-final-flow > *,
  .sd-test-card,
  .sd-final-flow .sd-flow-gallery__item,
  .sd-next-case a {
    max-width: 100%;
    min-width: 0;
  }

  .sd-testing__grid,
  .sd-test-card,
  .sd-final-flow .sd-flow-gallery,
  .sd-final-flow .sd-flow-gallery__item,
  .sd-next-case,
  .sd-next-case a {
    width: 100%;
  }

  .sd-hero__visual {
    display: block;
    height: clamp(360px, 102vw, 430px);
    min-height: 0;
    padding: 10px;
    aspect-ratio: auto;
    border-radius: 16px;
  }

  .sd-hero__screen--desktop {
    position: absolute;
    top: 48px;
    left: -20%;
    display: block;
    width: 112%;
    height: auto;
    aspect-ratio: 1512 / 1210;
    border-radius: 12px;
  }

  .sd-hero__screen--desktop img {
    height: 100%;
    opacity: 0.58;
  }

  .sdchange-case figure.case-cover.case-cover--sdchange:has(
      .sd-hero__screen--desktop:focus-visible
    ) {
    outline: 2px solid var(--sd-blue-bright);
    outline-offset: -4px;
  }

  .sdchange-case
    figure.case-cover.case-cover--sdchange
    .sd-hero__screen--desktop:focus-visible {
    outline: none;
  }

  .sd-hero__screen--mobile {
    position: absolute;
    top: 14px;
    right: 12px;
    bottom: auto;
    width: min(42%, 148px);
    border-radius: 12px;
  }

  .sd-media-card__frame {
    padding: 8px;
    border-radius: 16px;
  }

  .sd-media-card img {
    border-radius: 9px;
  }

  .sd-before__mobile img {
    width: 157%;
    max-width: none;
    transform: translateX(-18%);
  }

  .sd-methods {
    font-size: 14px;
  }

  .sd-methods strong {
    display: block;
  }

  .sdchange-page .sd-comparison-option.sd-scenario-card {
    gap: var(--case-rhythm-internal);
    padding: 0;
    border-radius: 0;
  }

  .sdchange-page .sd-scenario-card__media.sd-media-stage {
    border-radius: 16px;
  }

  .sd-scenario-card__pair {
    grid-template-columns: minmax(0, 1fr);
    gap: 10px;
  }

  .sd-scenario-card__arrow {
    justify-self: center;
  }

  .sd-scenario-outcome {
    padding: 16px;
    border-radius: 0 14px 14px 0;
  }

  .sdchange-page .sd-decision-module--proof {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 0;
    border-radius: 0;
  }

  .sdchange-page .sd-final-proof__figure.sd-media-stage {
    padding: 18px;
    border-radius: 16px;
  }

  .sd-final-proof__copy > p:last-child {
    font-size: 14.5px;
  }

  .sd-final-proof__media {
    width: min(100%, 220px);
    border-radius: 15px;
  }

  .sdchange-page .sd-final-flow .sd-flow-step {
    gap: 14px;
    padding: 0;
    border-radius: 0;
  }

  .sdchange-page .sd-final-flow .sd-flow-step__copy {
    gap: 8px;
    margin: 0;
  }

  .sdchange-page .sd-final-flow .sd-flow-gallery__trigger,
  .sdchange-page .sd-final-flow .sd-flow-step__media.sd-media-stage {
    border-radius: 16px;
  }

  .sd-final-flow .sd-flow-gallery__frame img {
    border-radius: 10px;
  }

  .sdchange-page .sd-solutions .sd-decision-module > .sd-focus-card.sd-media-stage {
    border-radius: 16px;
  }

  .sd-focus-card .sd-flow-crop {
    width: min(100%, 270px);
  }

  .sdchange-page .sd-testing-evidence__panel.sd-comparison-option {
    gap: var(--case-rhythm-internal);
    padding: 0;
    border-radius: 0;
  }

  .sdchange-page .sd-testing-evidence__trigger.sd-media-stage {
    border-radius: 16px;
  }

  .sdchange-case .case-lightbox {
    padding:
      max(10px, env(safe-area-inset-top))
      max(10px, env(safe-area-inset-right))
      calc(10px + env(safe-area-inset-bottom))
      max(10px, env(safe-area-inset-left));
  }

  .sdchange-case .case-lightbox__panel {
    width: 100%;
    height: 100%;
  }

  .sdchange-case .case-lightbox__toolbar {
    gap: 5px;
    padding: 5px;
  }

  .sdchange-case .case-lightbox__control {
    width: 44px;
    height: 44px;
    flex-basis: 44px;
  }

  .sdchange-case .case-lightbox__close {
    width: 44px;
    height: 44px;
    flex-basis: 44px;
  }

  .sdchange-case .case-lightbox__counter {
    min-width: 42px;
  }

  .sdchange-case .case-lightbox__viewport {
    padding: 0;
  }

  .sdchange-case .case-lightbox__image {
    max-height: 100%;
  }

  .sdchange-case .case-lightbox__caption {
    max-width: 100%;
    padding: 8px 11px;
  }

  .sd-next-case a {
    min-height: 188px;
    padding: 22px 58px 22px 20px;
    border-radius: 18px;
  }

  .sd-next-case a::after {
    right: 20px;
    font-size: 30px;
  }

  .sd-next-case strong {
    font-size: 23px;
  }

  .sd-next-case p {
    font-size: 14px;
  }
}

@media (hover: none), (pointer: coarse) {
  .sdchange-case .case-lightbox__control,
  .sdchange-case .case-lightbox__close {
    min-width: 44px;
    min-height: 44px;
  }
}

/* Keep layout columns fluid while media frames hug their interface images. */
.sdchange-page {
  --sd-mobile-screen-width: 304px;
  --sd-prototype-pair-screen-width: 260px;
  --sd-testing-screen-width: 412px;
}

.sdchange-page :is(
    .sd-scenario-card__media.sd-media-stage,
    .sd-final-proof__figure.sd-media-stage,
    .sd-solutions .sd-decision-module > .sd-focus-card.sd-media-stage,
    .sd-testing-evidence__trigger.sd-media-stage,
    .sd-final-flow .sd-flow-step__media.sd-media-stage
  ) {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  align-self: start;
  justify-self: center;
  width: fit-content;
  max-width: 100%;
  height: auto;
  padding: var(--sd-media-frame-padding);
  box-sizing: border-box;
}

.sdchange-page .sd-scenario-card__pair {
  width: calc(
    var(--sd-prototype-pair-screen-width) +
      var(--sd-prototype-pair-screen-width) + 52px
  );
  max-width: 100%;
}

.sdchange-page .sd-decision-module--proof {
  grid-template-columns: minmax(0, 1fr) minmax(260px, 338px);
}

.sdchange-page .sd-final-proof__figure.sd-media-stage {
  flex-direction: column;
}

.sdchange-page .sd-final-proof__media,
.sdchange-page .sd-final-proof__figure figcaption {
  width: var(--sd-mobile-screen-width);
  max-width: 100%;
}

.sdchange-page
  .sd-solutions
  .sd-solution--single
  > .sd-focus-card.sd-media-stage
  > img {
  width: var(--sd-mobile-screen-width);
  max-width: 100%;
}

.sdchange-page
  .sd-testing-evidence__trigger.sd-media-stage
  .sd-media-stage__frame {
  width: var(--sd-testing-screen-width);
  max-width: 100%;
  height: auto;
  aspect-ratio: auto;
}

.sdchange-page .sd-testing-evidence__trigger.sd-media-stage img {
  width: 100%;
  height: auto;
  object-fit: contain;
}

.sdchange-page .sd-final-flow .sd-flow-gallery__trigger {
  justify-self: center;
  width: fit-content;
  max-width: 100%;
}

.sdchange-page
  .sd-final-flow
  .sd-flow-gallery__item:nth-child(n)
  .sd-flow-step__media.sd-media-stage {
  align-items: center;
  padding: var(--sd-media-frame-padding);
}

.sdchange-page
  .sd-final-flow
  .sd-flow-gallery__item:nth-child(n)
  .sd-flow-gallery__frame
  img {
  width: var(--sd-mobile-screen-width);
  max-width: 100%;
}

@media (max-width: 620px) {
  .sdchange-page .sd-decision-module--proof {
    grid-template-columns: 1fr;
  }

  .sdchange-page :is(
      .sd-scenario-card__media.sd-media-stage,
      .sd-final-proof__figure.sd-media-stage,
      .sd-solutions .sd-decision-module > .sd-focus-card.sd-media-stage,
      .sd-testing-evidence__trigger.sd-media-stage,
      .sd-final-flow .sd-flow-step__media.sd-media-stage
    ),
  .sdchange-page
    .sd-final-flow
    .sd-flow-gallery__item:nth-child(n)
    .sd-flow-step__media.sd-media-stage {
    padding: var(--sd-media-frame-padding-mobile);
  }

  .sdchange-page .sd-scenario-card__pair {
    width: var(--sd-mobile-screen-width);
    max-width: 100%;
  }
}

/* Telderi transfer: content axes, text roles and neutral fact labels.
   Sources: telderi.css section heads, project meta, context and task. */
.sdchange-page .case-eyebrow {
  font-size: var(--font-size-caption);
  font-weight: 500;
  line-height: 1.45;
}

.sdchange-page .case-project-meta {
  backdrop-filter: blur(6px);
}

.sdchange-page .case-project-meta > .case-project-meta__item dt {
  color: var(--muted-light);
  font-size: 14px;
  font-weight: 500;
  line-height: 1.45;
}

.sdchange-page .case-project-meta > .case-project-meta__item dd {
  font-size: 16px;
  font-weight: 400;
  line-height: 1.5;
}

.sdchange-page .case-media-caption {
  font-size: var(--font-size-caption);
  font-weight: 500;
  line-height: 1.45;
  text-wrap: pretty;
}

.sdchange-page .sd-kicker {
  font-size: 14px;
  font-weight: 400;
  line-height: 20px;
  letter-spacing: 0;
}

/* Compact results: implementation, interface changes, scope and one data note. */
.sdchange-page #results.sd-section {
  margin-top: 0;
  gap: var(--case-rhythm-internal);
}

.sdchange-page #results > .case-results-intro {
  margin-top: 0;
}

.sdchange-page #results .case-results-grid-system {
  max-width: none;
  gap: var(--case-rhythm-internal) var(--sd-column-gap);
}

.sdchange-page #results .case-result-secondary {
  gap: var(--case-rhythm-local);
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
}

.sdchange-page #results .case-result-secondary > :is(h3, p) {
  max-width: none;
  margin: 0;
  color: rgba(241, 241, 239, 0.9);
  font-size: var(--sd-copy-size);
  font-weight: 400;
  line-height: var(--sd-copy-line);
  text-wrap: pretty;
}

.sdchange-page #results .case-result-secondary > h3 {
  font-weight: 500;
}

.sdchange-page #results .case-result-note {
  max-width: none;
  color: var(--muted-light);
  font-size: var(--font-size-caption);
  font-weight: 400;
}

.sdchange-page #results .case-next-project {
  max-width: none;
  width: calc(100% + 2 * var(--sd-content-inset));
  margin: 24px calc(-1 * var(--sd-content-inset)) 0;
}

.sdchange-page .case-next-project__title {
  font-size: var(--font-size-card-title);
  font-weight: 600;
  line-height: 1.35;
}

@media (max-width: 620px) {
  .sdchange-page {
    --font-size-body: 17px;
    --font-size-caption: 15px;
    --font-size-card-title: 20px;
    --space-section: var(--case-rhythm-section);
    --space-inner: 16px;
    --sd-panel-inset: 20px;
    --sd-panel-radius: 24px;
    --sd-column-gap: 24px;
  }
}

/* Local trial: one decision, paired prototype evidence and its tradeoff. */
.sdchange-page .sd-solution--application {
  gap: var(--case-rhythm-flow);
}

.sd-solution--application .sd-solution__copy {
  gap: var(--case-rhythm-local);
}

.sd-solution--application .sd-solution__head h3 {
  font-size: 17px;
  font-weight: 500;
  line-height: var(--sd-copy-line);
}

.sdchange-page .sd-solution--application .sd-scenario-comparison {
  gap: var(--case-rhythm-flow);
  margin-top: var(--case-rhythm-local);
  padding: var(--sd-media-frame-padding);
  border: 1px solid var(--sd-panel-line);
  border-radius: var(--case-screen-radius);
  background: var(--sd-panel-surface);
}

.sd-solution--application .sd-scenario-grid {
  column-gap: var(--case-rhythm-flow);
}

.sd-solution--application .sd-story-heading .sd-kicker {
  color: var(--muted-light);
  text-transform: none;
}

.sdchange-page .sd-solution--application .sd-scenario-card__media {
  padding: var(--sd-media-frame-padding-mobile);
}

.sd-solution--application .sd-scenario-card__pair {
  grid-template-columns: minmax(0, 1fr) 20px minmax(0, 1fr);
  gap: var(--case-rhythm-local);
}

.sdchange-page .sd-solution--application :is(.sd-scenario-card__status, .sd-scenario-card__caption, .sd-scenario-comparison__note) {
  font-size: 14px;
  line-height: 20px;
}

.sdchange-page .sd-solution--application .sd-scenario-comparison__note {
  font-size: 13px;
}

.sdchange-page .sd-solution--application > .case-media-caption {
  max-width: var(--sd-copy-measure);
  margin: 0;
  font-size: var(--sd-copy-size);
  font-weight: 400;
  line-height: var(--sd-copy-line);
}

@media (max-width: 1024px) {
  .sd-solution--application .sd-scenario-grid {
    row-gap: var(--case-rhythm-internal);
  }
}

@media (max-width: 620px) {
  .sdchange-page .sd-solution--application .sd-scenario-comparison {
    padding: var(--sd-media-frame-padding-mobile);
    border-radius: var(--case-screen-inner-radius);
  }

  .sdchange-page .sd-solution--application .sd-scenario-card {
    gap: var(--case-rhythm-flow);
  }

  .sdchange-page .sd-solution--application .sd-scenario-card__media {
    padding: var(--case-rhythm-local);
  }

  .sd-solution--application .sd-scenario-card__pair {
    grid-template-columns: minmax(0, 1fr);
  }

  .sd-solution--application .sd-scenario-card__arrow {
    transform: rotate(90deg);
  }
}

/* Single-screen decisions share a compact split; keep the pause after 01. */
.sdchange-page .sd-solution-list:has(> .sd-decision-split) {
  row-gap: calc(var(--case-rhythm-section) / 2);
}

.sd-solution:not(.sd-decision-split) + .sd-decision-split {
  margin-top: calc(var(--case-rhythm-section) / 2);
}

.sdchange-page .sd-decision-split {
  grid-template-columns: minmax(0, 440px) max-content;
  align-items: start;
  gap: var(--case-rhythm-internal) var(--sd-column-gap);
  max-width: calc(440px + var(--sd-column-gap) + var(--sd-mobile-screen-width) + 2 * var(--sd-media-frame-padding) + 2px);
}

.sd-decision-split > .sd-solution__copy {
  gap: var(--case-rhythm-local);
}

.sd-decision-split .sd-solution__head h3 {
  font-size: 17px;
  line-height: var(--sd-copy-line);
}

@media (max-width: 900px) {
  .sdchange-page .sd-decision-split {
    grid-template-columns: minmax(0, 1fr);
    max-width: 100%;
  }
}

/* Desktop macro rhythm: close reading groups, distinct decisions and sections.
   Preserve the accepted evidence layouts and the existing mobile rhythm. */
@media (min-width: 901px) {
  .sdchange-page .sd-content {
    gap: calc(var(--case-rhythm-section) - var(--case-rhythm-internal));
  }

  /* Keep the full section pause when entering design or validation. */
  .sdchange-page :is(.sd-solutions, .sd-testing) {
    margin-top: var(--case-rhythm-internal);
  }

  .sdchange-page .sd-section[id],
  .sdchange-page #solution.sd-section,
  .sdchange-page #results.sd-section {
    row-gap: var(--case-rhythm-flow);
  }

  /* Heading → intro: 16px; intro → evidence or supporting facts: 24px. */
  .sdchange-page .sd-section > :is(
      .sd-before, .sd-task__summary, .sd-testing__grid, .sd-flow-gallery
    ) {
    margin-top: var(--case-rhythm-local);
  }

  .sdchange-page .sd-solution-list {
    margin-top: var(--case-rhythm-flow);
  }

  /* The list already supplies the 48px pause between complete decisions. */
  .sd-solution:not(.sd-decision-split) + .sd-decision-split {
    margin-top: 0;
  }

  .sdchange-page .sd-testing__grid {
    row-gap: calc(var(--case-rhythm-internal) + var(--case-rhythm-local));
  }

  .sdchange-page .sd-solutions .sd-decision-module > .sd-focus-card.sd-media-stage {
    padding-block: var(--sd-media-frame-padding-mobile);
  }
}

/* Keep user and business goals side by side above the mobile breakpoint. */
@media (min-width: 621px) {
  .sdchange-page .sd-task__summary {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: var(--sd-column-gap);
    max-width: none;
  }
}