.installation-guide-page {
  background: var(--color-paper);
  color: var(--color-asphalt);
}

.installation-guide-page .installation-section,
.installation-guide-page .installation-masthead {
  overflow: hidden;
}

.installation-guide-page .installation-masthead {
  padding-block: var(--space-9);
}

.installation-masthead__grid,
.installation-reading-layout,
.installation-prep-layout,
.installation-help-layout,
.installation-routes__layout,
.installation-final__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-7);
}

.installation-masthead__content,
.installation-route-rail,
.installation-reading-lane,
.installation-prep-lane,
.installation-store-note,
.installation-help-lane,
.installation-message-rail,
.installation-routes__heading,
.installation-routes__list,
.installation-final__content {
  min-inline-size: 0;
  inline-size: 100%;
}

.installation-masthead__content {
  max-inline-size: 47.5rem;
}

.installation-masthead__content h1 {
  margin-block-end: var(--space-5);
  font-size: var(--text-display);
  line-height: var(--leading-display);
}

.installation-masthead__dek {
  max-inline-size: 36.25rem;
  color: var(--color-mist);
  font-size: var(--text-lead);
  font-weight: 500;
  line-height: var(--leading-lead);
}

.installation-masthead__dek span {
  border-block-end: 3px solid var(--color-amber);
}

.installation-masthead__promise {
  max-inline-size: 36.25rem;
  color: var(--color-slate);
}

.installation-masthead__action {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-3);
  min-inline-size: 0;
}

.installation-masthead__external-note,
.installation-final__boundary {
  margin: 0;
  color: var(--color-slate);
  font-family: var(--font-heading);
  font-size: var(--text-caption);
  line-height: var(--leading-caption);
}

.installation-guide__play-link {
  inline-size: fit-content;
}

.installation-route-rail {
  padding: var(--space-5);
  border: 1px solid var(--color-border-dark);
  border-inline-start: var(--rule-accent);
  background: var(--color-ink-raised);
}

.installation-route-rail__label,
.installation-store-note__label,
.installation-message-rail__label,
.installation-route-row__label,
.installation-caution__label {
  margin: 0;
  color: var(--color-amber);
  font-family: var(--font-heading);
  font-size: var(--text-utility);
  font-weight: 600;
  letter-spacing: 0.1em;
  line-height: var(--leading-utility);
  text-transform: uppercase;
}

.installation-route-rail__title {
  margin-block: var(--space-3) var(--space-5);
  font-size: var(--text-h4);
}

.installation-route-rail__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  margin: 0;
}

.installation-route-rail__list > div {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  min-inline-size: 0;
}

.installation-route-rail__list dt {
  color: var(--color-slate);
  font-family: var(--font-heading);
  font-size: var(--text-utility);
  font-weight: 500;
  line-height: var(--leading-utility);
  text-transform: uppercase;
}

.installation-route-rail__list dd {
  margin: 0;
  color: var(--color-mist);
  font-size: var(--text-caption);
  line-height: var(--leading-caption);
}

.installation-section {
  padding-block: var(--space-8);
}

.installation-reading-lane {
  max-inline-size: 46rem;
}

.installation-reading-lane h2,
.installation-prep-lane h2,
.installation-help-lane h2 {
  margin-block-start: 0;
}

.installation-official__boundary {
  max-inline-size: 36rem;
}

.installation-official__boundary h3 {
  margin-block-start: 0;
}

.installation-city-rule {
  inline-size: 100%;
  block-size: 1px;
  background: var(--color-city-blue);
  opacity: 0.8;
}

.installation-margin-label {
  display: none;
}

.installation-prep-lane {
  max-inline-size: 44rem;
}

.installation-checklist,
.installation-help-list {
  padding-inline-start: 1.25rem;
}

.installation-checklist li::marker {
  color: var(--color-amber);
}

.installation-inline-cue,
.installation-pause-cue {
  max-inline-size: 30rem;
  color: #516164;
  font-family: var(--font-heading);
  font-size: var(--text-caption);
  font-weight: 500;
  line-height: var(--leading-caption);
}

.installation-pause-cue {
  padding-inline-start: var(--space-3);
  border-inline-start: var(--rule-accent);
}

.installation-store-note,
.installation-message-rail {
  padding: var(--space-5);
  border: 1px solid var(--color-border-light);
  background: var(--color-paper-muted);
}

.installation-store-note h3,
.installation-message-rail h3 {
  margin-block: var(--space-3) var(--space-3);
  font-size: var(--text-h4);
}

.installation-store-note p:last-child,
.installation-message-rail p:last-child {
  margin-block-end: 0;
}

.installation-steps {
  color: var(--color-mist);
}

.installation-steps h2 {
  margin-block-start: 0;
}

.installation-steps__list {
  display: flex;
  flex-direction: column;
  min-inline-size: 0;
  border-block-start: 1px solid var(--color-border-dark);
}

.installation-step {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-3);
  min-inline-size: 0;
  padding-block: var(--space-6);
  border-block-end: 1px solid var(--color-border-dark);
}

.installation-step__number {
  color: var(--color-amber);
  font-family: var(--font-heading);
  font-size: var(--text-h3);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.04em;
  line-height: 1;
}

.installation-step__content {
  min-inline-size: 0;
  max-inline-size: 42rem;
}

.installation-step__content h3 {
  margin-block-start: 0;
}

.installation-step__content h3 span {
  border-block-end: 3px solid var(--color-amber);
}

.installation-step__annotation {
  color: var(--color-city-blue);
  font-family: var(--font-heading);
  font-size: var(--text-caption);
  font-weight: 500;
  line-height: var(--leading-caption);
}

.installation-inline-links {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: var(--space-3);
  min-inline-size: 0;
}

.installation-inline-links > a {
  min-inline-size: 0;
  max-inline-size: 100%;
  font-family: var(--font-heading);
  font-size: var(--text-caption);
  font-weight: 500;
}

.installation-help-lane {
  max-inline-size: 42rem;
}

.installation-help-list li::marker {
  color: var(--color-amber);
}

.installation-caution {
  max-inline-size: 38rem;
  border-inline-start-color: var(--color-signal-red);
}

.installation-caution__label {
  color: var(--color-signal-red);
}

.installation-caution h3 {
  margin-block-start: var(--space-2);
}

.installation-routes {
  color: var(--color-mist);
}

.installation-routes__heading {
  max-inline-size: 42rem;
}

.installation-routes__heading h2 {
  margin-block-start: 0;
}

.installation-routes__list {
  display: flex;
  flex-direction: column;
  min-inline-size: 0;
  border-block-start: 1px solid var(--color-border-dark);
}

.installation-route-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-3);
  min-inline-size: 0;
  padding-block: var(--space-5);
  border-block-end: 1px solid var(--color-border-dark);
}

.installation-route-row__label {
  color: var(--color-slate);
  font-variant-numeric: tabular-nums;
}

.installation-route-row__label--blue {
  color: var(--color-city-blue);
}

.installation-route-row__content {
  min-inline-size: 0;
  max-inline-size: 36rem;
}

.installation-route-row__content h3 {
  margin-block: 0 var(--space-3);
  font-size: var(--text-h4);
}

.installation-route-row__content h3 a {
  text-decoration: underline;
  text-decoration-color: var(--color-amber);
  text-decoration-thickness: 0.125em;
  text-underline-offset: 0.18em;
}

.installation-route-row__content h3 a span {
  display: inline-block;
  transition: transform var(--transition-fast);
}

.installation-route-row__content h3 a:hover span,
.installation-route-row__content h3 a:focus-visible span {
  transform: translateX(0.3rem);
}

.installation-route-row__content p {
  margin-block-end: 0;
}

.installation-route-row--last {
  position: relative;
}

.installation-route-row--last::after {
  content: "";
  inline-size: 3rem;
  block-size: 3px;
  position: absolute;
  inset-inline-start: 0;
  inset-block-end: -2px;
  background: var(--color-amber);
}

.installation-final {
  padding-block: var(--space-9);
}

.installation-final__content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-4);
  min-inline-size: 0;
  max-inline-size: 34rem;
}

.installation-final__content > * {
  margin: 0;
}

.installation-final__content h2 {
  font-size: var(--text-h2);
}

.installation-final__content .eyebrow {
  margin-block-end: 0;
}

.installation-final__content .button {
  margin-block-start: var(--space-2);
}

@media (max-width: 26.25rem) {
  .installation-guide__play-link {
    inline-size: 100%;
  }
}

@media (min-width: 48rem) {
  .installation-guide-page .installation-masthead,
  .installation-final {
    padding-block: var(--space-10);
  }

  .installation-section {
    padding-block: var(--space-9);
  }

  .installation-masthead__grid {
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: var(--space-6);
  }

  .installation-masthead__content {
    grid-column: 1 / span 4;
  }

  .installation-route-rail {
    grid-column: 5 / span 2;
    min-inline-size: 17.5rem;
  }

  .installation-reading-layout,
  .installation-prep-layout,
  .installation-help-layout {
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: var(--space-6);
  }

  .installation-reading-lane,
  .installation-prep-lane,
  .installation-help-lane {
    grid-column: 1 / span 4;
  }

  .installation-store-note,
  .installation-message-rail {
    grid-column: 1 / -1;
  }

  .installation-step {
    grid-template-columns: minmax(0, 1fr) minmax(0, 5fr);
    gap: var(--space-5);
  }

  .installation-step__number {
    grid-column: 1;
  }

  .installation-step__content {
    grid-column: 2;
  }

  .installation-route-row {
    grid-template-columns: minmax(0, 1fr) minmax(0, 5fr);
    gap: var(--space-5);
  }

  .installation-route-row__label {
    grid-column: 1;
  }

  .installation-route-row__content {
    grid-column: 2;
  }

  .installation-final__grid {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .installation-final__content {
    grid-column: 1 / span 5;
  }
}

@media (min-width: 64rem) {
  .installation-masthead__grid,
  .installation-reading-layout,
  .installation-prep-layout,
  .installation-help-layout,
  .installation-routes__layout,
  .installation-final__grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    column-gap: 1.5rem;
  }

  .installation-masthead__content {
    grid-column: 1 / span 7;
  }

  .installation-route-rail {
    grid-column: 9 / span 4;
    min-inline-size: 17.5rem;
    align-self: start;
  }

  .installation-reading-lane,
  .installation-prep-lane,
  .installation-help-lane {
    grid-column: 2 / span 7;
  }

  .installation-margin-label {
    display: block;
    grid-column: 11 / span 2;
    align-self: start;
    padding-inline-start: var(--space-3);
    border-inline-start: 1px solid var(--color-city-blue);
    color: var(--color-city-blue);
    font-family: var(--font-heading);
    font-size: var(--text-utility);
    font-weight: 600;
    letter-spacing: 0.14em;
    line-height: var(--leading-utility);
    text-transform: uppercase;
    writing-mode: vertical-rl;
  }

  .installation-store-note,
  .installation-message-rail {
    grid-column: 10 / span 3;
    align-self: start;
  }

  .installation-steps__list {
    inline-size: 100%;
  }

  .installation-step {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    column-gap: 1.5rem;
  }

  .installation-step__number {
    grid-column: 1 / span 2;
  }

  .installation-step__content {
    grid-column: 3 / span 6;
  }

  .installation-routes__heading {
    grid-column: 1 / span 5;
  }

  .installation-routes__list {
    grid-column: 6 / span 7;
  }

  .installation-route-row {
    grid-template-columns: repeat(7, minmax(0, 1fr));
    column-gap: 1.5rem;
  }

  .installation-route-row__label {
    grid-column: 1 / span 1;
  }

  .installation-route-row__content {
    grid-column: 2 / span 6;
  }

  .installation-final__content {
    grid-column: 2 / span 6;
  }
}

@media (min-width: 80rem) {
  .installation-guide-page .installation-masthead {
    padding-block-end: var(--space-10);
  }

  .installation-official {
    padding-block-start: var(--space-10);
  }
}

@media (prefers-reduced-motion: reduce) {
  .installation-route-row__content h3 a span {
    transition: none;
  }
}