.page-platform {
  --platform-rail: 200px;
}

.page-platform .crumb-wrap {
  padding-top: var(--space-4);
}

.page-platform .platform-hero {
  padding-top: var(--space-6);
  padding-bottom: var(--section-y);
}

.page-platform .hero-top {
  max-width: 900px;
  margin-inline: auto;
  text-align: center;
}

.page-platform .hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin: 0 0 var(--space-4);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  letter-spacing: var(--tracking-heading);
  color: var(--color-primary);
}

.page-platform .hero-kicker::before,
.page-platform .hero-kicker::after {
  content: "";
  width: 28px;
  height: 1px;
  background: var(--color-primary);
}

.page-platform .hero-display {
  margin: 0 0 var(--space-4);
  font-family: var(--font-heading);
  font-size: var(--text-display);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

.page-platform .hero-lede {
  margin: 0 auto;
  max-width: 62ch;
  font-size: var(--text-lg);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-platform .hero-lower {
  margin-top: var(--space-8);
  display: grid;
  gap: var(--gutter);
  grid-template-columns: 1fr;
}

.page-platform .hero-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--color-contrast-line);
  border: 1px solid var(--color-contrast-line);
}

.page-platform .stat-cell {
  padding: var(--space-3);
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

.page-platform .stat-num {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-figure);
  font-weight: var(--weight-heading);
  line-height: 1;
  color: var(--color-contrast-accent);
  font-variant-numeric: tabular-nums;
}

.page-platform .stat-label {
  margin: var(--space-2) 0 var(--space-1);
  font-size: var(--text-base);
  font-weight: var(--weight-heading);
  color: var(--color-contrast-ink);
}

.page-platform .stat-sub {
  margin: 0;
  font-size: var(--text-xs);
  line-height: 1.6;
  color: var(--color-contrast-ink);
  opacity: 0.72;
}

.page-platform .hero-figure {
  margin: 0;
}

.page-platform .hero-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border: 1px solid var(--color-line);
}

.page-platform .audience-grid {
  display: grid;
  gap: var(--gutter);
  grid-template-columns: 1fr;
}

.page-platform .audience-cell {
  border-top: 2px solid var(--color-primary);
  padding-top: var(--space-3);
  background: var(--color-surface);
}

.page-platform .audience-mark {
  display: inline-block;
  margin-bottom: var(--space-2);
  padding-bottom: 2px;
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-heading);
  color: var(--color-primary);
  border-bottom: 1px solid var(--color-primary-soft);
}

.page-platform .audience-title {
  margin: 0 0 var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
}

.page-platform .audience-text {
  margin: 0 0 var(--space-3);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-platform .audience-next {
  margin: 0;
  padding-top: var(--space-2);
  border-top: 1px solid var(--color-line);
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

.page-platform .service-layout {
  display: grid;
  gap: var(--gutter);
  grid-template-columns: 1fr;
  margin-top: var(--space-6);
}

.page-platform .service-rail {
  align-self: start;
}

.page-platform .rail-list {
  list-style: none;
  display: flex;
  gap: var(--space-1);
  margin: 0;
  padding: var(--space-2) 0;
  overflow-x: auto;
  border-top: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
  -webkit-overflow-scrolling: touch;
}

.page-platform .rail-link {
  display: block;
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-sm);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink-soft);
  text-decoration: none;
  white-space: nowrap;
  border: 1px solid var(--color-line);
  background: var(--color-surface);
  transition: color 160ms ease, border-color 160ms ease, background 160ms ease;
}

.page-platform .rail-link:hover,
.page-platform .rail-link:focus-visible {
  color: var(--color-primary-ink);
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.page-platform .rail-link:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

.page-platform .service-stream {
  min-width: 0;
}

.page-platform .service-block {
  position: relative;
  margin-bottom: var(--space-6);
  padding: var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-ink-soft);
  scroll-margin-top: var(--space-6);
  transition: background 160ms ease, border-color 160ms ease;
}

.page-platform .service-block::before {
  content: "";
  position: absolute;
  inset: 5px;
  border: 1px solid transparent;
  pointer-events: none;
  transition: border-color 160ms ease;
}

.page-platform .service-block:hover,
.page-platform .service-block:focus-within {
  background: var(--color-surface-alt);
  border-color: var(--color-primary);
}

.page-platform .service-block:hover::before,
.page-platform .service-block:focus-within::before {
  border-color: var(--color-primary-soft);
}

.page-platform .service-head {
  position: relative;
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--color-line);
}

.page-platform .service-index {
  margin: 0 0 var(--space-1);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-heading);
  color: var(--color-primary);
}

.page-platform .service-title {
  margin: 0 0 var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-platform .service-summary {
  margin: 0;
  max-width: 58ch;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-platform .service-body {
  display: grid;
  gap: var(--gutter);
  grid-template-columns: 1fr;
}

.page-platform .service-fields {
  margin: 0;
  display: grid;
  gap: var(--space-3);
  grid-template-columns: 1fr;
}

.page-platform .field {
  padding-top: var(--space-2);
  border-top: 1px solid var(--color-line);
}

.page-platform .field dt {
  margin-bottom: var(--space-1);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-heading);
  font-weight: var(--weight-heading);
  color: var(--color-primary);
}

.page-platform .field dd {
  margin: 0;
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--color-ink-soft);
}

.page-platform .service-figure {
  margin: 0 0 var(--space-6);
}

.page-platform .service-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border: 1px solid var(--color-line);
}

.page-platform .scenario-list {
  display: grid;
  gap: var(--space-4);
  grid-template-columns: 1fr;
}

.page-platform .scenario-row {
  display: grid;
  gap: var(--space-3);
  padding: var(--space-4);
  background: var(--color-surface);
  border-left: 3px solid var(--color-primary);
  grid-template-columns: 1fr;
}

.page-platform .scenario-num {
  display: block;
  margin-bottom: var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.08em;
  color: var(--color-primary);
}

.page-platform .scenario-title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
}

.page-platform .scenario-what {
  margin: 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-platform .scenario-path {
  margin: 0;
  padding-top: var(--space-2);
  border-top: 1px solid var(--color-line);
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

.page-platform .scenario-path a {
  color: var(--color-accent);
  text-decoration: none;
  border-bottom: 1px solid var(--color-accent);
}

.page-platform .scenario-path a:hover,
.page-platform .scenario-path a:focus-visible {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.page-platform .scenario-path a:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

.page-platform .next-head {
  max-width: 720px;
  margin-bottom: var(--space-6);
}

.page-platform .next-lede {
  margin: var(--space-3) 0 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-platform .next-grid {
  display: grid;
  gap: var(--space-3);
  grid-template-columns: 1fr;
}

.page-platform .next-card {
  position: relative;
  display: block;
  padding: var(--space-4);
  text-decoration: none;
  background: var(--color-surface-alt);
  border: 1px solid var(--color-line);
  transition: background 160ms ease, border-color 160ms ease;
}

.page-platform .next-card::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: var(--color-primary);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 160ms ease;
}

.page-platform .next-card:hover,
.page-platform .next-card:focus-visible {
  background: var(--color-surface-deep);
  border-color: var(--color-primary);
}

.page-platform .next-card:hover::after,
.page-platform .next-card:focus-visible::after {
  transform: scaleY(1);
}

.page-platform .next-card:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

.page-platform .next-label {
  margin: 0 0 var(--space-1);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-heading);
  color: var(--color-primary);
}

.page-platform .next-title {
  margin: 0 0 var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
}

.page-platform .next-text {
  margin: 0;
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--color-ink-soft);
}

@media (min-width: 640px) {
  .page-platform .audience-grid,
  .page-platform .next-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-platform .service-fields {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-platform .scenario-row {
    grid-template-columns: minmax(0, 220px) minmax(0, 1fr);
    align-items: start;
  }

  .page-platform .scenario-path {
    grid-column: 1 / -1;
  }
}

@media (min-width: 900px) {
  .page-platform .hero-lower {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: stretch;
  }

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

  .page-platform .service-layout {
    grid-template-columns: var(--platform-rail) minmax(0, 1fr);
  }

  .page-platform .service-rail {
    position: sticky;
    top: var(--space-6);
  }

  .page-platform .rail-list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding: 0;
    border-top: 0;
    border-bottom: 0;
    border-left: 1px solid var(--color-line);
  }

  .page-platform .rail-link {
    border: 0;
    border-left: 2px solid transparent;
    background: transparent;
    padding: var(--space-2) var(--space-3);
  }

  .page-platform .rail-link:hover,
  .page-platform .rail-link:focus-visible {
    background: var(--color-primary-soft);
    color: var(--color-primary);
    border-left-color: var(--color-primary);
  }

  .page-platform .service-block {
    padding: var(--space-6);
  }

  .page-platform .service-body {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-platform .service-body--reverse {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr);
  }

  .page-platform .service-figure--portrait img {
    max-height: 420px;
  }

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