.page-about {
  --about-rule: rgba(199, 208, 217, 0.18);
  --about-rule-strong: rgba(199, 208, 217, 0.32);
  --about-gap: clamp(20px, 3.4vw, 44px);
  background: var(--ink-blue);
  color: var(--paper);
  overflow-x: hidden;
}

.page-about .block {
  padding-block: clamp(48px, 6.5vw, 96px);
}

.page-about.block-data,
.page-about .block-data {
  background: var(--ink-blue);
  color: var(--paper);
}

.page-about .block-read {
  background: var(--paper);
  color: var(--ink-black);
}

.page-about .block-graph {
  background: var(--panel-blue);
  color: var(--paper);
}

.page-about .prose {
  max-width: 68ch;
  color: inherit;
}

.page-about .about-prose-dark {
  color: var(--silver);
}

.page-about .section-head {
  margin-bottom: clamp(28px, 4vw, 52px);
}

.page-about .section-title {
  font-weight: 300;
  letter-spacing: -0.01em;
  line-height: 1.14;
  margin: 12px 0 14px;
  max-width: 22ch;
}

.page-about .section-lead {
  max-width: 58ch;
  color: var(--silver);
}

.page-about .block-read .section-lead {
  color: var(--ink-quiet);
}

.page-about .about-footnote,
.page-about .about-note-line {
  margin-top: 22px;
  padding-left: 14px;
  border-left: 2px solid var(--orange);
  font-size: var(--fs-14);
  line-height: 1.7;
}

.page-about .about-note-line {
  border-left-color: var(--green);
  color: var(--ink-quiet);
  max-width: 62ch;
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  padding-block: clamp(28px, 4vw, 52px) clamp(46px, 6vw, 88px);
  background:
    radial-gradient(120% 90% at 92% 0%, rgba(255, 106, 26, 0.14) 0%, rgba(11, 27, 43, 0) 58%),
    var(--ink-blue);
}

.page-about .about-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--about-gap);
  margin-top: clamp(26px, 4vw, 48px);
}

.page-about .about-title {
  font-weight: 300;
  font-size: clamp(38px, 8.4vw, 88px);
  line-height: 1.04;
  letter-spacing: -0.025em;
  margin: 10px 0 20px;
  color: var(--paper);
}

.page-about .about-lead {
  max-width: 56ch;
  font-size: var(--fs-18);
  line-height: 1.8;
  color: var(--silver);
  margin: 0;
}

.page-about .about-side-title {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--orange-soft);
  margin: 0 0 14px;
}

.page-about .about-facts {
  margin: 0;
  border-top: 1px solid var(--about-rule-strong);
}

.page-about .about-fact {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 6px 18px;
  padding: 12px 0;
  border-bottom: 1px solid var(--about-rule);
}

.page-about .about-fact-key {
  font-size: var(--fs-14);
  color: var(--silver);
  margin: 0;
}

.page-about .about-fact-val {
  margin: 0;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--fs-18);
  color: var(--paper);
}

.page-about .about-side-note {
  margin: 16px 0 0;
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--silver);
  max-width: 42ch;
}

/* ---------- 01 指标边界 ---------- */

.page-about .about-scope-body {
  display: grid;
  gap: 16px;
  margin-bottom: clamp(26px, 3.5vw, 42px);
}

.page-about .about-scope-body .prose {
  margin: 0;
  line-height: 1.8;
  color: var(--ink-black);
}

.page-about .about-table-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-about .about-indicator-table {
  width: 100%;
  min-width: 720px;
  border-collapse: collapse;
}

.page-about .about-indicator-table caption {
  text-align: left;
  padding-bottom: 12px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.12em;
  color: var(--ink-quiet);
}

.page-about .about-indicator-table th,
.page-about .about-indicator-table td {
  padding: 14px 16px 14px 0;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid rgba(16, 22, 28, 0.14);
  font-size: var(--fs-14);
  line-height: 1.65;
}

.page-about .about-indicator-table thead th {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.14em;
  color: var(--ink-quiet);
  border-bottom: 1px solid rgba(16, 22, 28, 0.32);
}

.page-about .about-indicator-table tbody th {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--fs-14);
  color: var(--ink-black);
  white-space: nowrap;
}

.page-about .about-indicator-table td:last-child {
  font-family: var(--font-mono);
  color: var(--ink-quiet);
  white-space: nowrap;
}

.page-about .about-indicator-table .tag {
  white-space: nowrap;
}

/* ---------- 02 主客场拆分 ---------- */

.page-about .about-split-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--about-gap);
}

.page-about .about-split-col .prose + .prose {
  margin-top: 18px;
}

.page-about .about-split-col--alt {
  border-top: 1px solid var(--about-rule-strong);
  padding-top: 22px;
}

.page-about .about-field-list {
  margin: 0;
  display: grid;
  gap: 0;
}

.page-about .about-field-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid var(--about-rule);
}

.page-about .about-field-name {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.12em;
  color: var(--orange-soft);
  margin: 0;
}

.page-about .about-field-desc {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--silver);
}

.page-about .about-quote {
  margin: clamp(30px, 4vw, 52px) 0 0;
  padding: 6px 0 6px 20px;
  border-left: 3px solid var(--orange);
}

.page-about .about-quote p {
  margin: 0;
  max-width: 54ch;
  font-size: var(--fs-18);
  line-height: 1.75;
  color: var(--paper);
}

/* ---------- 03 五季时间线 ---------- */

.page-about .about-seasons-media {
  margin: 0 0 clamp(30px, 4vw, 56px);
}

.page-about .about-timeline-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 26px 22px;
}

.page-about .about-timeline-item {
  position: relative;
  padding-top: 30px;
}

.page-about .about-timeline-item::before {
  content: "";
  position: absolute;
  top: 5px;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--about-rule-strong);
}

.page-about .about-timeline-item::after {
  content: "";
  position: absolute;
  top: 1px;
  left: 0;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  border: 2px solid var(--orange);
  background: var(--panel-blue);
}

.page-about .about-timeline-year {
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(22px, 3.4vw, 34px);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--paper);
  line-height: 1.1;
}

.page-about .about-timeline-note {
  margin: 8px 0 0;
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--silver);
  max-width: 30ch;
}

.page-about .about-season-figures {
  margin-top: clamp(34px, 5vw, 62px);
  padding-top: 26px;
  border-top: 1px solid var(--about-rule-strong);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px 20px;
}

.page-about .about-season-figure {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-about .about-season-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(30px, 4.6vw, 52px);
  font-weight: 700;
  line-height: 1;
  color: var(--orange);
}

.page-about .about-season-cap {
  font-size: var(--fs-12);
  line-height: 1.6;
  color: var(--silver);
}

/* ---------- 04 核对流程 ---------- */

.page-about .about-process-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-process-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 8px;
  padding: 22px 0;
  border-top: 1px solid rgba(16, 22, 28, 0.14);
}

.page-about .about-process-item:last-child {
  border-bottom: 1px solid rgba(16, 22, 28, 0.14);
}

.page-about .about-process-step {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.16em;
  color: var(--ink-quiet);
}

.page-about .about-process-title {
  margin: 0 0 8px;
  font-size: var(--fs-24);
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--ink-black);
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
}

.page-about .about-process-body {
  margin: 0;
  max-width: 66ch;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--ink-black);
}

.page-about .about-process-item--current {
  background: linear-gradient(90deg, rgba(255, 106, 26, 0.10) 0%, rgba(255, 106, 26, 0) 72%);
  padding-inline: 16px;
}

.page-about .about-process-item--current .about-process-step {
  color: var(--orange);
}

.page-about .about-process-media {
  margin: clamp(30px, 4vw, 52px) 0 0;
}

/* ---------- 05 异常值 ---------- */

.page-about .about-anomaly-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--about-gap);
}

.page-about .about-anomaly-list {
  margin: 0;
  border-top: 1px solid var(--about-rule-strong);
}

.page-about .about-anomaly-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 16px 0;
  border-bottom: 1px solid var(--about-rule);
}

.page-about .about-anomaly-row dt {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.14em;
  color: var(--orange-soft);
}

.page-about .about-anomaly-row dd {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--silver);
  max-width: 52ch;
}

.page-about .about-anomaly-media {
  margin: 0;
}

/* ---------- 06 运营与联络 ---------- */

.page-about .about-ops-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--about-gap);
}

.page-about .about-ops-title {
  margin: 0 0 16px;
  font-size: var(--fs-18);
  font-weight: 500;
  color: var(--paper);
}

.page-about .about-ops-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--about-rule-strong);
}

.page-about .about-ops-list li {
  position: relative;
  padding: 13px 0 13px 20px;
  border-bottom: 1px solid var(--about-rule);
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--silver);
}

.page-about .about-ops-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 20px;
  width: 8px;
  height: 1px;
  background: var(--green-soft);
}

.page-about .about-ops-list--muted li::before {
  background: var(--silver);
  opacity: 0.5;
}

.page-about .about-ops-actions {
  margin-top: clamp(28px, 4vw, 44px);
  display: flex;
  flex-wrap: wrap;
  gap: 12px 14px;
}

.page-about .about-ops-note {
  margin: 22px 0 0;
  max-width: 62ch;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--silver);
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-about .about-field-row {
    grid-template-columns: 12ch minmax(0, 1fr);
    gap: 18px;
    align-items: baseline;
  }

  .page-about .about-anomaly-row {
    grid-template-columns: 12ch minmax(0, 1fr);
    gap: 18px;
    align-items: baseline;
  }

  .page-about .about-process-item {
    grid-template-columns: 12ch minmax(0, 1fr);
    gap: 22px;
    padding: 26px 0;
  }

  .page-about .about-season-figures {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 0.86fr);
    align-items: end;
  }

  .page-about .about-scope-body {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 26px 40px;
  }

  .page-about .about-split-grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-about .about-split-col--alt {
    border-top: 0;
    border-left: 1px solid var(--about-rule-strong);
    padding-top: 0;
    padding-left: 30px;
  }

  .page-about .about-timeline-list {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 16px;
  }

  .page-about .about-anomaly-grid {
    grid-template-columns: minmax(0, 1.42fr) minmax(0, 0.9fr);
    align-items: start;
  }

  .page-about .about-ops-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 40px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
}
<<<END>>>