.page-platform {
  --pf-hairline: var(--border-thin);
}

/* ---------- 面包屑与首屏 ---------- */

.page-platform .breadcrumb {
  padding-block: var(--space-3) 0;
}

.page-platform .pf-hero {
  position: relative;
  margin-top: var(--space-3);
  background: var(--color-surface);
  border-block-start: var(--pf-hairline) solid var(--color-line);
  border-block-end: var(--pf-hairline) solid var(--color-line);
  overflow: hidden;
}

.page-platform .pf-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(120% 96% at 92% 4%,
      color-mix(in srgb, var(--color-primary) 14%, transparent) 0%,
      transparent 66%);
  pointer-events: none;
}

.page-platform .pf-hero-inner {
  position: relative;
  z-index: 1;
  padding-block: var(--space-6) var(--space-4);
}

.page-platform .pf-kicker {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  margin: 0 0 var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
}

.page-platform .pf-kicker-dot {
  width: calc(var(--space-1) * 0.75);
  height: calc(var(--space-1) * 0.75);
  border-radius: var(--radius-sm);
  background: var(--color-primary);
}

.page-platform .pf-title {
  margin: 0;
  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);
  max-width: 14ch;
}

.page-platform .pf-lede {
  margin: var(--space-4) 0 0;
  max-width: 58ch;
  font-size: var(--text-lg);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* 四组大数字指标条 */

.page-platform .pf-hero-metrics {
  list-style: none;
  margin: var(--space-6) 0 0;
  padding: var(--space-3) 0 0;
  border-block-start: var(--pf-hairline) dotted var(--color-line);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3) var(--space-2);
}

.page-platform .pf-hero-metric {
  display: flex;
  flex-direction: column;
  gap: calc(var(--space-1) * 0.5);
  min-width: 0;
}

.page-platform .pf-hero-figure {
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  font-weight: var(--weight-heading);
  line-height: 0.92;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  color: var(--color-primary);
}

.page-platform .pf-hero-label {
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
}

.page-platform .pf-hero-status {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  margin: var(--space-4) 0 0;
  padding: calc(var(--space-1) * 0.75) var(--space-2);
  border: var(--pf-hairline) solid var(--color-primary);
  border-radius: var(--radius-sm);
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.04em;
}

.page-platform .pf-status-dot {
  width: calc(var(--space-1) * 0.75);
  height: calc(var(--space-1) * 0.75);
  border-radius: 50%;
  background: var(--color-accent);
  flex: none;
}

.page-platform .pf-hero-texture {
  position: relative;
  z-index: 0;
  border-block-start: var(--pf-hairline) solid var(--color-line);
  line-height: 0;
}

.page-platform .pf-hero-texture img {
  display: block;
  width: 100%;
  height: clamp(72px, 12vw, 160px);
  object-fit: cover;
  opacity: 0.6;
}

/* ---------- 指标看板 ---------- */

.page-platform .pf-board {
  padding-block-start: var(--section-y-lg);
}

.page-platform .pf-tabs {
  margin-top: var(--space-4);
}

.page-platform .pf-tablist {
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  gap: 0;
  padding: 0;
  border: var(--pf-hairline) solid var(--color-line);
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--color-surface-alt);
}

.page-platform .pf-tab {
  position: relative;
  flex: 1 1 180px;
  min-width: 0;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: calc(var(--space-1) * 0.25);
  padding: var(--space-2) var(--space-2) var(--space-2) var(--space-3);
  border: 0;
  border-inline-start: var(--pf-hairline) solid var(--color-line);
  background: transparent;
  color: var(--color-ink-soft);
  font-family: var(--font-heading);
  text-align: left;
  cursor: pointer;
}

.page-platform .pf-tab:first-child {
  border-inline-start: 0;
}

.page-platform .pf-tab[aria-selected="true"] {
  background: var(--color-primary-soft);
  color: var(--color-primary);
}

.page-platform .pf-tab[aria-selected="true"]::before {
  content: "";
  position: absolute;
  inset-block: 0;
  inset-inline-start: 0;
  width: 3px;
  background: var(--color-primary);
}

.page-platform .pf-tab:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: -3px;
}

.page-platform .pf-tab-mark {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.2em;
  color: var(--color-ink-muted);
}

.page-platform .pf-tab[aria-selected="true"] .pf-tab-mark {
  color: var(--color-primary);
}

.page-platform .pf-tab-name {
  font-size: var(--text-base);
  font-weight: var(--weight-heading);
  line-height: 1.2;
}

.page-platform .pf-tab-count {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: var(--color-ink-muted);
}

.page-platform .pf-panel {
  padding-block-start: var(--space-4);
}

.page-platform .pf-panel-media {
  margin: 0 0 var(--space-4);
  border: var(--pf-hairline) solid var(--color-line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-surface-alt);
}

.page-platform .pf-panel-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.page-platform .pf-metric-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2);
}

.page-platform .pf-metric {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-3);
  border: var(--pf-hairline) solid var(--color-line);
  border-radius: var(--radius-sm);
  background: var(--color-surface-alt);
  transition: background-color 0.16s ease, border-color 0.16s ease;
}

.page-platform .pf-metric:hover,
.page-platform .pf-metric:focus-within {
  background: var(--color-highlight);
  border-color: color-mix(in srgb, var(--color-primary) 60%, var(--color-line));
}

.page-platform .pf-metric-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  padding-block-end: var(--space-2);
  border-block-end: var(--pf-hairline) dotted var(--color-line);
}

.page-platform .pf-metric-num {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.14em;
  color: var(--color-primary);
}

.page-platform .pf-metric-name {
  margin: 0;
  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 .pf-metric-value {
  display: flex;
  align-items: baseline;
  gap: var(--space-1);
  margin: 0;
  padding-block-end: var(--space-2);
  border-block-end: var(--pf-hairline) solid var(--color-line);
}

.page-platform .pf-metric-figure {
  font-family: var(--font-mono);
  font-size: var(--text-3xl);
  font-weight: var(--weight-heading);
  line-height: 1;
  letter-spacing: -0.01em;
  font-variant-numeric: tabular-nums;
  color: var(--color-primary);
}

.page-platform .pf-metric-unit {
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  color: var(--color-ink-muted);
}

.page-platform .pf-metric-desc {
  margin: 0;
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink);
}

.page-platform .pf-metric-desc a {
  color: var(--color-ink);
  text-decoration: underline;
  text-decoration-style: dotted;
  text-underline-offset: 3px;
}

.page-platform .pf-metric-desc a:hover,
.page-platform .pf-metric-desc a:focus-visible {
  color: var(--color-primary);
}

.page-platform .pf-metric-meta {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-2);
  margin: auto 0 0;
  padding-block-start: var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}

.page-platform .pf-metric-meta dt,
.page-platform .pf-metric-meta dd {
  margin: 0;
}

.page-platform .pf-metric-more {
  padding-block-start: var(--space-2);
  border-block-start: var(--pf-hairline) dotted var(--color-line);
}

.page-platform .pf-metric-more p {
  margin: 0;
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

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

/* ---------- 口径说明 ---------- */

.page-platform .pf-notes {
  padding-block-end: var(--section-y-lg);
}

.page-platform .pf-notes-grid {
  margin-top: var(--space-4);
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
}

.page-platform .pf-note {
  padding-block-start: var(--space-2);
  border-block-start: var(--pf-hairline) dotted var(--color-line);
}

.page-platform .pf-note-title {
  margin: 0 0 var(--space-1);
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: var(--weight-heading);
  letter-spacing: 0.08em;
  color: var(--color-ink);
}

.page-platform .pf-note p {
  margin: 0;
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-platform .pf-note a {
  color: var(--color-primary);
  text-decoration: underline;
  text-decoration-style: dotted;
  text-underline-offset: 3px;
}

/* ---------- 响应式 ---------- */

@media (max-width: 719px) {
  .page-platform .pf-tab {
    flex: 1 1 100%;
    border-inline-start: 0;
    border-block-start: var(--pf-hairline) solid var(--color-line);
  }

  .page-platform .pf-tab:first-child {
    border-block-start: 0;
  }

  .page-platform .pf-tab[aria-selected="true"]::before {
    inset-block: 0;
    inset-inline-start: 0;
    width: 3px;
  }
}

@media (min-width: 720px) {
  .page-platform .pf-hero-inner {
    padding-block: var(--space-8) var(--space-6);
  }

  .page-platform .pf-hero-metrics {
    gap: var(--space-3);
  }

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

  .page-platform .pf-notes-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-3) var(--space-4);
  }
}

@media (min-width: 1080px) {
  .page-platform .pf-hero-metrics {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0;
    padding-block-start: var(--space-4);
  }

  .page-platform .pf-hero-metric {
    padding-inline: var(--space-3);
    border-inline-start: var(--pf-hairline) dotted var(--color-line);
  }

  .page-platform .pf-hero-metric:first-child {
    padding-inline-start: 0;
    border-inline-start: 0;
  }

  .page-platform .pf-hero-metric:last-child {
    padding-inline-end: 0;
  }

  .page-platform .pf-tab {
    flex: 1 1 0;
  }

  .page-platform .pf-panel-media {
    margin-bottom: var(--space-4);
  }

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

  .page-platform .pf-notes-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* 桌面端悬停展开口径行 */
@media (min-width: 1080px) and (hover: hover) {
  .page-platform .pf-metric-more {
    max-height: 0;
    overflow: hidden;
    padding-block-start: 0;
    border-block-start-color: transparent;
    transition: max-height 0.2s ease, padding 0.2s ease;
  }

  .page-platform .pf-metric:hover .pf-metric-more,
  .page-platform .pf-metric:focus-within .pf-metric-more {
    max-height: 16em;
    padding-block-start: var(--space-2);
    border-block-start-color: var(--color-line);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-platform .pf-metric,
  .page-platform .pf-metric-more {
    transition: none;
  }
}
<<<END>>>