.page-platform {
  display: block;
}

/* ---------- 面包屑 ---------- */
.page-platform .breadcrumb {
  padding-block: var(--space-3);
}

/* ---------- 首屏 ---------- */
.page-platform .platform-hero {
  padding-bottom: var(--space-8);
}

.page-platform .platform-hero__title {
  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);
  margin: var(--space-3) 0 0;
  max-width: 14ch;
}

.page-platform .platform-hero__title::after {
  content: "";
  display: block;
  width: calc(var(--space-8) * 1.5);
  height: calc(var(--border-thick) * 3);
  background: var(--color-primary);
  margin-top: var(--space-3);
}

.page-platform .platform-hero__lede {
  font-size: var(--text-lg);
  line-height: calc(var(--leading-heading) + 0.45);
  color: var(--color-ink-soft);
  margin: var(--space-4) 0 0;
}

.page-platform .platform-figures {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: var(--space-6);
  border-top: calc(var(--border-thick) * 2) solid var(--color-ink);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-platform .platform-figure {
  padding: var(--space-3) var(--space-2);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-platform .platform-figure:nth-child(odd) {
  border-right: var(--border-thin) solid var(--color-line);
}

.page-platform .platform-figure:nth-last-child(-n + 2) {
  border-bottom: 0;
}

.page-platform .platform-figure__num {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  line-height: 1;
  color: var(--color-ink);
  font-variant-numeric: tabular-nums;
}

.page-platform .platform-figure__label {
  display: block;
  margin-top: var(--space-1);
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

.page-platform .platform-hero__figure {
  margin: var(--space-6) 0 0 auto;
  width: min(100%, calc(var(--container) * 0.575));
}

.page-platform .platform-hero__frame {
  aspect-ratio: 3 / 2;
  overflow: hidden;
  border-radius: var(--radius-sm);
  background: var(--color-surface-deep);
}

.page-platform .platform-hero__frame img,
.page-platform .platform-index__frame img,
.page-platform .platform-settle__frame img,
.page-platform .platform-metrics__matrix-frame img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

/* ---------- 分组带 ---------- */
.page-platform .platform-rail-section {
  padding-block: var(--space-6);
  background: var(--color-surface-alt);
  border-top: var(--border-thin) solid var(--color-line);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-platform .platform-rail-heading {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
  margin: 0 0 var(--space-3);
}

.page-platform .platform-rail {
  display: flex;
  gap: var(--space-2);
  overflow-x: auto;
  padding-bottom: var(--space-2);
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
}

.page-platform .platform-chip {
  flex: 0 0 auto;
  scroll-snap-align: start;
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  min-width: 13ch;
  padding: var(--space-2) var(--space-3);
  background: var(--color-surface);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: var(--color-ink);
  transition: background-color 160ms linear;
}

.page-platform .platform-chip:hover,
.page-platform .platform-chip:focus-visible {
  background: var(--color-surface-deep);
}

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

.page-platform .platform-chip__code {
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
  letter-spacing: 0.04em;
}

.page-platform .platform-chip__name {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  line-height: var(--leading-heading);
}

.page-platform .platform-chip__count {
  font-size: var(--text-xs);
  color: var(--color-ink-soft);
}

/* ---------- 条目索引 ---------- */
.page-platform .platform-index {
  padding-block: var(--space-8);
}

.page-platform .platform-index__heading {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
  margin: 0;
}

.page-platform .platform-index__note {
  font-size: var(--text-base);
  line-height: calc(var(--leading-heading) + 0.45);
  color: var(--color-ink-soft);
  margin: var(--space-2) 0 0;
}

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

.page-platform .platform-index__frame {
  aspect-ratio: 3 / 2;
  overflow: hidden;
  border-radius: var(--radius-sm);
  background: var(--color-surface-deep);
}

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

.page-platform .platform-block + .platform-block {
  padding-top: var(--space-8);
}

.page-platform .platform-block__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-2);
  flex-wrap: wrap;
  margin-bottom: var(--space-2);
}

.page-platform .platform-block__title {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  flex-wrap: wrap;
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
  margin: 0;
}

.page-platform .platform-block__code {
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
  letter-spacing: 0.04em;
}

.page-platform .platform-block__count {
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}

.page-platform .platform-entries {
  list-style: none;
  margin: var(--space-3) 0 0;
  padding: 0;
}

.page-platform .platform-entry {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-2);
  padding-block: var(--space-4);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-platform .platform-entry:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-platform .platform-entry__index {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
}

.page-platform .platform-entry__no {
  font-family: var(--font-mono);
  font-size: var(--text-2xl);
  line-height: 1;
  color: var(--color-ink);
  letter-spacing: 0.04em;
  font-variant-numeric: tabular-nums;
}

.page-platform .platform-entry__state {
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}

.page-platform .platform-entry__state--live {
  color: var(--color-ink-soft);
}

.page-platform .platform-entry__title {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
  margin: 0;
}

.page-platform .platform-entry__desc {
  font-size: var(--text-base);
  line-height: calc(var(--leading-heading) + 0.45);
  color: var(--color-ink-soft);
  margin: var(--space-1) 0 0;
  max-width: var(--measure);
}

.page-platform .platform-entry__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1) var(--space-4);
  margin: var(--space-2) 0 0;
}

.page-platform .platform-entry__meta > div {
  display: flex;
  align-items: baseline;
  gap: var(--space-1);
}

.page-platform .platform-entry__meta dt {
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}

.page-platform .platform-entry__meta dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-ink);
  font-variant-numeric: tabular-nums;
}

.page-platform .platform-entry__more {
  margin-top: var(--space-2);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-platform .platform-entry__more > summary {
  cursor: pointer;
  padding-block: var(--space-1);
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
  list-style: none;
}

.page-platform .platform-entry__more > summary::-webkit-details-marker {
  display: none;
}

.page-platform .platform-entry__more > summary::before {
  content: "＋";
  display: inline-block;
  width: 1.4em;
  font-family: var(--font-mono);
  color: var(--color-ink-muted);
}

.page-platform .platform-entry__more[open] > summary::before {
  content: "－";
}

.page-platform .platform-entry__more > summary:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

.page-platform .platform-entry__fields {
  margin: 0;
  padding: 0 0 var(--space-2);
  max-width: var(--measure);
}

.page-platform .platform-entry__fields > div {
  display: grid;
  grid-template-columns: 8ch minmax(0, 1fr);
  gap: var(--space-2);
  padding-block: var(--space-1);
  border-bottom: var(--border-thin) solid var(--color-line);
  font-size: var(--text-sm);
}

.page-platform .platform-entry__fields dt {
  color: var(--color-ink-muted);
}

.page-platform .platform-entry__fields dd {
  margin: 0;
  color: var(--color-ink);
}

.page-platform .platform-entry__fields dd.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.page-platform .platform-entry__fields a {
  color: var(--color-ink);
  text-decoration: underline;
  text-decoration-color: var(--color-line);
  text-underline-offset: 3px;
}

.page-platform .platform-entry__fields a:hover,
.page-platform .platform-entry__fields a:focus-visible {
  text-decoration-color: var(--color-primary);
}

/* ---------- 结算字段 ---------- */
.page-platform .platform-settle {
  padding-block: var(--section-y);
  background: var(--color-surface-deep);
}

.page-platform .platform-settle__title {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
  margin: 0;
}

.page-platform .platform-settle__lede {
  font-size: var(--text-base);
  line-height: calc(var(--leading-heading) + 0.45);
  color: var(--color-ink-soft);
  margin: var(--space-2) 0 0;
  max-width: var(--measure);
}

.page-platform .platform-table-wrap {
  margin-top: var(--space-6);
  overflow-x: auto;
  border-top: calc(var(--border-thick) * 2) solid var(--color-ink);
  border-bottom: var(--border-thin) solid var(--color-line);
  -webkit-overflow-scrolling: touch;
}

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

.page-platform .platform-table {
  width: 100%;
  min-width: 40rem;
  border-collapse: collapse;
  font-size: var(--text-sm);
  line-height: calc(var(--leading-heading) + 0.45);
}

.page-platform .platform-table th,
.page-platform .platform-table td {
  padding: var(--space-2);
  text-align: left;
  vertical-align: top;
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-platform .platform-table thead th {
  position: sticky;
  top: 0;
  z-index: 2;
  background: var(--color-surface-deep);
  color: var(--color-ink);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-sm);
  white-space: nowrap;
}

.page-platform .platform-table tbody th {
  position: sticky;
  left: 0;
  z-index: 1;
  background: var(--color-surface-deep);
  font-family: var(--font-body);
  font-weight: 400;
  color: var(--color-ink);
  white-space: nowrap;
}

.page-platform .platform-table tbody td {
  color: var(--color-ink-soft);
}

.page-platform .platform-table .num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
  color: var(--color-ink);
}

.page-platform .platform-settle__notes {
  display: grid;
  gap: var(--space-6);
  margin-top: var(--space-8);
}

.page-platform .platform-settle__figure {
  margin: 0;
}

.page-platform .platform-settle__frame {
  aspect-ratio: 3 / 2;
  overflow: hidden;
  border-radius: var(--radius-sm);
  background: var(--color-surface-alt);
}

.page-platform .platform-settle__prose h3 {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
  margin: 0 0 var(--space-2);
}

.page-platform .platform-settle__prose p {
  font-size: var(--text-base);
  line-height: calc(var(--leading-heading) + 0.5);
  color: var(--color-ink-soft);
  margin: 0 0 var(--space-2);
}

.page-platform .platform-settle__prose a {
  color: var(--color-ink);
  text-decoration: underline;
  text-decoration-color: var(--color-line);
  text-underline-offset: 3px;
}

.page-platform .platform-settle__prose a:hover,
.page-platform .platform-settle__prose a:focus-visible {
  text-decoration-color: var(--color-primary);
}

/* ---------- 深色指标区 ---------- */
.page-platform .platform-metrics {
  padding-block: var(--section-y);
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

.page-platform .platform-metrics__title {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-contrast-ink);
  margin: 0;
}

.page-platform .platform-metrics__lede {
  font-size: var(--text-base);
  line-height: calc(var(--leading-heading) + 0.5);
  color: var(--color-contrast-ink);
  opacity: 0.78;
  margin: var(--space-2) 0 0;
}

.page-platform .platform-metrics__figure {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  margin-top: var(--space-6);
  padding-top: var(--space-3);
  border-top: var(--border-thin) solid var(--color-contrast-line);
}

.page-platform .platform-metrics__num {
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  line-height: 1;
  color: var(--color-contrast-accent);
  font-variant-numeric: tabular-nums;
}

.page-platform .platform-metrics__figure-label {
  font-size: var(--text-sm);
  color: var(--color-contrast-ink);
  opacity: 0.7;
}

.page-platform .platform-metric-list {
  display: grid;
  gap: 0;
  margin-top: var(--space-6);
  border-top: var(--border-thin) solid var(--color-contrast-line);
}

.page-platform .platform-metric {
  padding-block: var(--space-4);
  border-bottom: var(--border-thin) solid var(--color-contrast-line);
}

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

.page-platform .platform-metric__def {
  font-size: var(--text-base);
  line-height: calc(var(--leading-heading) + 0.5);
  color: var(--color-contrast-ink);
  opacity: 0.78;
  margin: var(--space-2) 0 0;
  max-width: var(--measure);
}

.page-platform .platform-metric__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1) var(--space-4);
  margin: var(--space-2) 0 0;
}

.page-platform .platform-metric__meta > div {
  display: flex;
  align-items: baseline;
  gap: var(--space-1);
}

.page-platform .platform-metric__meta dt {
  font-size: var(--text-xs);
  color: var(--color-contrast-ink);
  opacity: 0.6;
}

.page-platform .platform-metric__meta dd {
  margin: 0;
  font-size: var(--text-sm);
  color: var(--color-contrast-ink);
}

.page-platform .platform-metric__meta dd.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.page-platform .platform-metrics__matrix {
  margin: var(--space-8) 0 0;
}

.page-platform .platform-metrics__matrix-frame {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: var(--radius-sm);
  background: var(--color-contrast-line);
}

.page-platform .platform-metrics .figure__caption {
  color: var(--color-contrast-ink);
  opacity: 0.6;
}

.page-platform .platform-metrics__note {
  font-size: var(--text-base);
  line-height: calc(var(--leading-heading) + 0.5);
  color: var(--color-contrast-ink);
  opacity: 0.8;
  margin: var(--space-6) 0 0;
  max-width: var(--measure);
}

.page-platform .platform-metrics__note .mark--underline {
  color: var(--color-contrast-ink);
  text-decoration-color: var(--color-contrast-accent);
  font-weight: var(--weight-body);
}

/* ---------- 相邻栏目 ---------- */
.page-platform .platform-next {
  padding-block: var(--section-y);
}

.page-platform .platform-next__heading {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
  margin: 0;
}

.page-platform .platform-next__lede {
  font-size: var(--text-base);
  line-height: calc(var(--leading-heading) + 0.45);
  color: var(--color-ink-soft);
  margin: var(--space-2) 0 0;
}

.page-platform .platform-next__list {
  list-style: none;
  margin: var(--space-6) 0 0;
  padding: 0;
  border-top: calc(var(--border-thick) * 2) solid var(--color-ink);
}

.page-platform .platform-next__item {
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-platform .platform-next__link {
  display: grid;
  gap: var(--space-1);
  padding-block: var(--space-4);
  text-decoration: none;
  color: var(--color-ink);
}

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

.page-platform .platform-next__label {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-platform .platform-next__link:hover .platform-next__label,
.page-platform .platform-next__link:focus-visible .platform-next__label {
  text-decoration: underline;
  text-decoration-color: var(--color-primary);
  text-underline-offset: 4px;
}

.page-platform .platform-next__desc {
  font-size: var(--text-base);
  line-height: calc(var(--leading-heading) + 0.45);
  color: var(--color-ink-soft);
  max-width: var(--measure);
}

/* ---------- 窄屏折叠 ---------- */
@media (max-width: 599px) {
  .page-platform .platform-hero {
    padding-bottom: var(--space-6);
  }

  .page-platform .platform-hero__title {
    max-width: none;
  }

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

  .page-platform .platform-figure:nth-child(odd) {
    border-right: 0;
  }

  .page-platform .platform-figure:nth-last-child(-n + 2) {
    border-bottom: var(--border-thin) solid var(--color-line);
  }

  .page-platform .platform-figure:last-child {
    border-bottom: 0;
  }

  .page-platform .platform-hero__figure {
    width: 100%;
  }

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

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

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

/* ---------- 桌面栅格 ---------- */
@media (min-width: 760px) {
  .page-platform .platform-figures {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-platform .platform-figure {
    border-bottom: 0;
    padding-inline: var(--space-3);
    border-right: var(--border-thin) solid var(--color-line);
  }

  .page-platform .platform-figure:first-child {
    padding-left: 0;
  }

  .page-platform .platform-figure:nth-child(odd) {
    border-right: var(--border-thin) solid var(--color-line);
  }

  .page-platform .platform-figure:last-child {
    border-right: 0;
    padding-right: 0;
  }

  .page-platform .platform-figure:nth-last-child(-n + 2) {
    border-bottom: 0;
  }

  .page-platform .platform-entry {
    grid-template-columns: calc(var(--space-8) * 2) minmax(0, 1fr);
    gap: var(--space-4);
  }

  .page-platform .platform-entry__index {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-1);
  }

  .page-platform .platform-settle__notes {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: var(--space-8);
    align-items: start;
  }

  .page-platform .platform-metric-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-6);
    border-top: 0;
  }

  .page-platform .platform-metric {
    border-top: var(--border-thin) solid var(--color-contrast-line);
  }
}

@media (min-width: 1000px) {
  .page-platform .platform-rail {
    overflow-x: visible;
    flex-wrap: nowrap;
  }

  .page-platform .platform-chip {
    flex: 1 1 0;
    min-width: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-platform .platform-chip {
    transition: none;
  }
}