.page-platform .plat-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  padding: var(--space-6) 0 calc(var(--section-y) + var(--space-4));
}

.page-platform .plat-hero__bg {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.page-platform .plat-hero__bg img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.42;
}

.page-platform .plat-hero__scrim {
  position: absolute;
  inset: 0;
  background: var(--overlay-scrim);
}

.page-platform .plat-hero__ruler {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 8px;
  pointer-events: none;
  opacity: 0.55;
  background-image: repeating-linear-gradient(
    90deg,
    color-mix(in srgb, var(--color-contrast-accent) 55%, transparent) 0 1px,
    transparent 1px 28px
  );
}

.page-platform .plat-hero__inner {
  min-width: 0;
}

.page-platform .plat-hero__round {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  margin: 0 0 var(--space-3);
  padding: 6px var(--space-2);
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-contrast-accent);
  background: color-mix(in srgb, var(--color-contrast-accent) 12%, transparent);
}

.page-platform .plat-hero__round-sep {
  opacity: 0.6;
}

.page-platform .plat-hero__pulse {
  flex: none;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-contrast-accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-contrast-accent) 26%, transparent);
}

.page-platform .plat-hero__title {
  margin: 0 0 var(--space-3);
  max-width: 15ch;
  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-contrast-ink);
}

.page-platform .plat-hero__lead {
  margin: 0;
  max-width: 62ch;
  font-size: var(--text-lg);
  line-height: var(--leading-body);
  color: color-mix(in srgb, var(--color-contrast-ink) 82%, transparent);
}

.page-platform .plat-figures {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  margin-top: var(--space-8);
}

.page-platform .plat-figure {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  min-width: 0;
}

.page-platform .plat-figure .hero-figure {
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  font-weight: var(--weight-heading);
  line-height: 1;
  color: var(--color-contrast-accent);
}

.page-platform .plat-figure__label {
  max-width: 24ch;
  font-size: var(--text-sm);
  line-height: 1.55;
  color: color-mix(in srgb, var(--color-contrast-ink) 72%, transparent);
}

.page-platform .plat-band-wrap {
  margin-top: var(--space-8);
}

.page-platform .plat-band-label {
  margin: 0 0 var(--space-2);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: color-mix(in srgb, var(--color-contrast-ink) 62%, transparent);
}

.page-platform .plat-band {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 6px;
}

.page-platform .plat-band__seg {
  display: flex;
  align-items: flex-end;
  justify-content: center;
  min-height: 76px;
  padding: var(--space-1) 4px;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  text-decoration: none;
  color: var(--color-contrast-ink);
  transition: transform 0.18s ease, filter 0.18s ease;
}

.page-platform .plat-band__seg:hover,
.page-platform .plat-band__seg:focus-visible {
  transform: translateY(-4px);
  filter: brightness(1.12);
  outline: 2px solid var(--color-contrast-accent);
  outline-offset: 2px;
}

.page-platform .plat-seg-1 {
  background: color-mix(in srgb, var(--color-accent) 26%, var(--color-contrast-surface));
}

.page-platform .plat-seg-2 {
  background: color-mix(in srgb, var(--color-accent) 42%, var(--color-contrast-surface));
}

.page-platform .plat-seg-3 {
  background: color-mix(in srgb, var(--color-accent) 58%, var(--color-contrast-surface));
}

.page-platform .plat-seg-4 {
  background: color-mix(in srgb, var(--color-accent) 74%, var(--color-contrast-surface));
}

.page-platform .plat-seg-5 {
  background: var(--color-accent);
}

.page-platform .plat-hero__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
  margin-top: var(--space-6);
}

.page-platform .plat-hero__hint {
  flex: 1 1 260px;
  margin: 0;
  max-width: 54ch;
  font-size: var(--text-sm);
  line-height: 1.6;
  color: color-mix(in srgb, var(--color-contrast-ink) 68%, transparent);
}

.page-platform .plat-block {
  padding: var(--space-8) 0;
}

.page-platform .plat-block--tight {
  padding: var(--space-6) 0;
}

.page-platform .plat-read__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

.page-platform .plat-read__side {
  min-width: 0;
}

.page-platform .plat-read__title {
  margin: var(--space-1) 0 var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

.page-platform .plat-read__intro {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-platform .plat-read__body {
  min-width: 0;
}

.page-platform .plat-bands {
  display: grid;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
}

.page-platform .plat-band-item {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: var(--space-2);
  align-items: start;
  padding: var(--space-3);
  border-radius: var(--radius-sm);
  background: var(--color-surface-alt);
  box-shadow: var(--shadow-1);
  scroll-margin-top: var(--space-6);
}

.page-platform .plat-band-item:nth-child(even) {
  background: var(--color-surface-deep);
  transform: translateX(4px);
}

.page-platform .plat-band-item:target {
  box-shadow: var(--shadow-2), 0 0 0 2px var(--color-focus);
}

.page-platform .plat-band-item__chip {
  display: block;
  min-height: 44px;
  height: 100%;
  border-radius: var(--radius-sm);
}

.page-platform .plat-band-item[data-level="1"] .plat-band-item__chip {
  background: color-mix(in srgb, var(--color-accent) 20%, var(--color-surface));
}

.page-platform .plat-band-item[data-level="2"] .plat-band-item__chip {
  background: color-mix(in srgb, var(--color-accent) 38%, var(--color-surface));
}

.page-platform .plat-band-item[data-level="3"] .plat-band-item__chip {
  background: color-mix(in srgb, var(--color-accent) 56%, var(--color-surface));
}

.page-platform .plat-band-item[data-level="4"] .plat-band-item__chip {
  background: color-mix(in srgb, var(--color-accent) 74%, var(--color-surface));
}

.page-platform .plat-band-item[data-level="5"] .plat-band-item__chip {
  background: var(--color-accent);
}

.page-platform .plat-band-item__name {
  margin: 0 0 4px;
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
}

.page-platform .plat-band-item__text {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-platform .frame {
  margin: 0 0 var(--space-4);
}

.page-platform .frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

.page-platform .plat-backlink {
  display: inline-block;
  margin-top: var(--space-2);
  padding-bottom: 2px;
  font-size: var(--text-sm);
  text-decoration: none;
  color: var(--color-focus);
  border-bottom: 1px solid color-mix(in srgb, var(--color-focus) 36%, transparent);
}

.page-platform .plat-backlink:hover,
.page-platform .plat-backlink:focus-visible {
  border-bottom-color: var(--color-focus);
  outline: none;
}

.page-platform .plat-leagues {
  list-style: none;
  margin: 0 0 var(--space-4);
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-platform .plat-league {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) 6px;
  border-radius: var(--radius-sm);
  transition: background-color 0.18s ease;
}

.page-platform .plat-league:hover,
.page-platform .plat-league:focus-within {
  background: color-mix(in srgb, var(--color-highlight) 62%, transparent);
}

.page-platform .plat-league__name {
  flex: none;
  width: 56px;
  font-size: var(--text-base);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
}

.page-platform .plat-league__bar {
  position: relative;
  flex: 1 1 120px;
  height: 14px;
  min-width: 0;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: color-mix(in srgb, var(--color-ink-muted) 16%, transparent);
}

.page-platform .plat-league__bar::after {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: var(--w, 70%);
  border-radius: var(--radius-sm);
  background: linear-gradient(
    90deg,
    color-mix(in srgb, var(--color-primary) 80%, var(--color-accent)) 0%,
    var(--color-accent) 100%
  );
}

.page-platform .plat-league__meta {
  flex: none;
  width: 132px;
  text-align: right;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-ink-soft);
}

.page-platform .plat-plain {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-platform .plat-note {
  margin: 0 0 var(--space-4);
  padding: var(--space-2) 0 var(--space-2) var(--space-3);
  border-left: 3px solid var(--color-primary);
}

.page-platform .plat-note--accent {
  border-left-color: var(--color-accent);
}

.page-platform .plat-note--muted {
  border-left-color: var(--color-ink-muted);
}

.page-platform .plat-note__name {
  margin: 0 0 4px;
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-platform .plat-note__text {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-platform .plat-rhythm {
  position: relative;
  margin-top: var(--space-4);
  padding: calc(var(--space-6) + var(--space-1)) var(--space-4) var(--space-4);
  border-radius: var(--radius-sm);
}

.page-platform .plat-rhythm__title {
  margin: 0 0 var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

.page-platform .plat-rhythm__lead {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-platform .plat-steps {
  list-style: none;
  counter-reset: plat-step;
  margin: var(--space-4) 0 0;
  padding: 0;
  display: grid;
  gap: var(--space-3);
}

.page-platform .plat-steps li {
  counter-increment: plat-step;
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: var(--space-2);
  align-items: baseline;
  padding-top: var(--space-2);
  border-top: 1px solid color-mix(in srgb, var(--color-line) 75%, transparent);
}

.page-platform .plat-steps li::before {
  content: counter(plat-step, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-primary);
}

.page-platform .plat-steps__name {
  margin: 0 0 2px;
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: var(--weight-heading);
  line-height: 1.5;
  color: var(--color-ink);
}

.page-platform .plat-steps__text {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-platform .plat-exits__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 .plat-exits__lead {
  margin: 0 0 var(--space-4);
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-platform .plat-exits {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-2);
}

.page-platform .plat-exit {
  display: grid;
  gap: 4px;
  padding: var(--space-3);
  border-left: 3px solid var(--color-primary);
  border-radius: var(--radius-sm);
  background: var(--color-surface-alt);
  text-decoration: none;
  transition: transform 0.18s ease, background-color 0.18s ease;
}

.page-platform .plat-exit:hover,
.page-platform .plat-exit:focus-visible {
  transform: translateX(4px);
  background: var(--color-highlight);
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

.page-platform .plat-exit__name {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
}

.page-platform .plat-exit__desc {
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--color-ink-soft);
}

.page-platform .plat-closing {
  margin: var(--space-6) 0 0;
  padding-left: var(--space-3);
  border-left: 3px solid var(--color-accent);
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink);
}

@media (max-width: 560px) {
  .page-platform .plat-league__meta {
    flex-basis: 100%;
    width: auto;
    text-align: left;
    padding-left: 64px;
  }

  .page-platform .plat-band__seg {
    min-height: 64px;
    font-size: 11px;
  }
}

@media (min-width: 720px) {
  .page-platform .plat-figures {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-platform .plat-band__seg {
    min-height: 96px;
  }
}

@media (min-width: 900px) {
  .page-platform .plat-hero {
    padding: var(--space-8) 0 calc(var(--section-y-lg) + var(--space-4));
  }

  .page-platform .plat-block {
    padding: var(--section-y) 0;
  }

  .page-platform .plat-block--tight {
    padding: var(--space-8) 0;
  }

  .page-platform .plat-read__grid {
    grid-template-columns: 260px minmax(0, 1fr);
    gap: var(--space-8);
  }

  .page-platform .plat-rhythm {
    padding: calc(var(--space-8) + var(--space-1)) var(--space-6) var(--space-6);
  }

  .page-platform .plat-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-4);
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-platform .plat-band__seg,
  .page-platform .plat-exit,
  .page-platform .plat-league,
  .page-platform .plat-band-item {
    transition: none;
  }

  .page-platform .plat-band__seg:hover,
  .page-platform .plat-band__seg:focus-visible {
    transform: none;
  }

  .page-platform .plat-exit:hover,
  .page-platform .plat-exit:focus-visible {
    transform: none;
  }

  .page-platform .plat-band-item:nth-child(even) {
    transform: none;
  }
}

.page-platform {
  --w: 1rem;
}