.page-about {
  --about-glow: 0 0 14px rgba(201, 162, 39, .5);
  --about-card-radius: 4px;
  background: var(--rice);
  color: var(--ink);
  padding-bottom: 72px;
}

.page-about .about-wrap {
  padding-top: 20px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding-block: 20px 44px;
  border-bottom: 1px solid var(--line);
}

.page-about .about-kicker {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--brass);
}

.page-about .about-title {
  margin: 0 0 20px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(34px, 8vw, 56px);
  line-height: 1.12;
  letter-spacing: -0.01em;
  color: var(--ink);
  max-width: 16em;
}

.page-about .about-lead {
  max-width: 34em;
  color: var(--grey);
  font-size: 17px;
  line-height: 1.85;
}

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 36px 0 0;
  background: var(--line-soft);
  border: 1px solid var(--line);
}

.page-about .about-stat {
  background: var(--rice);
  padding: 16px 14px 18px;
}

.page-about .about-stat-label {
  font-size: 13px;
  font-weight: 500;
  color: var(--grey);
  letter-spacing: .04em;
  margin-bottom: 8px;
}

.page-about .about-stat-value {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin: 0;
}

.page-about .about-stat-num {
  font-family: var(--font-mono);
  font-size: clamp(26px, 6vw, 36px);
  font-weight: 700;
  line-height: 1;
  color: var(--ink);
  letter-spacing: 0.01em;
}

.page-about .about-stat-unit {
  font-size: 13px;
  color: var(--brass);
  font-family: var(--font-mono);
}

/* ---------- 章节通用 ---------- */
.page-about .section {
  margin-top: 0;
  padding-block: 44px 8px;
  border-top: 1px solid var(--line);
  border-top-color: var(--line-soft);
}

.page-about .section:first-of-type {
  border-top: 0;
  padding-top: 40px;
}

.page-about .about-intro {
  max-width: 34em;
  color: var(--grey);
  margin-top: 4px;
}

.page-about .about-inline-link {
  color: var(--brass);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  transition: color .16s var(--ease), border-color .16s var(--ease);
}

.page-about .about-inline-link:hover,
.page-about .about-inline-link:focus-visible {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

.page-about .about-strong {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--ink);
}

/* ---------- 时间轴 ---------- */
.page-about .about-timeline-grid {
  display: grid;
  gap: 32px;
  margin-top: 28px;
}

.page-about .about-timeline-figure {
  margin: 0;
}

.page-about .about-timeline-figure .media {
  max-width: 320px;
}

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

.page-about .about-node {
  position: relative;
  padding: 0 0 30px 44px;
}

.page-about .about-node:last-child {
  padding-bottom: 0;
}

.page-about .about-node::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 22px;
  bottom: -4px;
  width: 1px;
  background: var(--line);
}

.page-about .about-node:last-child::before {
  display: none;
}

.page-about .about-node-marker {
  position: absolute;
  left: 0;
  top: 5px;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: var(--rice);
  border: 1px solid var(--gold);
  display: grid;
  place-items: center;
  transition: border-color .18s var(--ease), box-shadow .18s var(--ease), transform .18s var(--ease);
}

.page-about .about-node-marker::after {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: var(--about-glow);
  transition: transform .18s var(--ease);
}

.page-about .about-node:hover .about-node-marker,
.page-about .about-node:focus-within .about-node-marker {
  border-color: var(--gold);
  box-shadow: var(--about-glow);
  transform: translateY(-2px);
}

.page-about .about-node-year {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--brass);
}

.page-about .about-node-title {
  margin: 0 0 8px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 20px;
  line-height: 1.4;
  color: var(--ink);
}

.page-about .about-node-text,
.page-about .about-node-gain {
  margin: 0;
  max-width: 34em;
  line-height: 1.8;
  color: var(--grey);
  font-size: 16px;
}

.page-about .about-node-gain {
  margin-top: 8px;
  padding-left: 12px;
  border-left: 2px solid var(--line);
  color: var(--brass);
  font-size: 14px;
  line-height: 1.7;
}

/* ---------- 品牌定位 ---------- */
.page-about .about-purpose-media {
  margin: 24px 0 28px;
}

.page-about .about-purpose-body {
  display: grid;
  gap: 28px;
}

.page-about .about-purpose-body .prose p {
  max-width: 34em;
  line-height: 1.85;
}

.page-about .about-facts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line);
}

.page-about .about-facts li {
  background: var(--paper);
  padding: 16px;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 8px;
}

.page-about .about-fact-num {
  font-family: var(--font-mono);
  font-size: 34px;
  font-weight: 700;
  line-height: 1;
  color: var(--ruby);
}

.page-about .about-fact-unit {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--brass);
}

.page-about .about-fact-text {
  flex: 1 1 100%;
  font-size: 14px;
  color: var(--grey);
  line-height: 1.7;
}

/* ---------- 三类频道 ---------- */
.page-about .about-channel-grid {
  margin-top: 24px;
}

.page-about .about-channel {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 20px;
  border-radius: var(--about-card-radius);
  border: 1px solid var(--line-soft);
  background: var(--paper);
  transition: transform .16s var(--ease), border-color .16s var(--ease), box-shadow .16s var(--ease);
}

.page-about .about-channel:hover {
  transform: translateY(-3px);
  border-color: var(--gold);
  box-shadow: 0 10px 24px rgba(14, 14, 16, .08);
}

.page-about .about-channel .card-title {
  margin: 0;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 19px;
  line-height: 1.4;
  color: var(--ink);
}

.page-about .about-channel .card-text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--grey);
}

.page-about .about-channel-meta {
  margin: auto 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--line-soft);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--brass);
}

.page-about .about-channel-note {
  margin: 24px 0 0;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--grey);
}

/* ---------- 团队 ---------- */
.page-about .about-team-grid {
  display: grid;
  gap: 28px;
  margin-top: 20px;
}

.page-about .about-team-lead {
  margin: 0 0 14px;
  max-width: 34em;
  font-size: 17px;
  line-height: 1.85;
  color: var(--ink);
}

.page-about .about-team-copy .prose p {
  max-width: 34em;
  line-height: 1.85;
}

.page-about .about-team-figure {
  margin: 0;
}

.page-about .about-roster {
  list-style: none;
  margin: 32px 0 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-about .about-roster-item {
  display: grid;
  gap: 8px;
}

.page-about .about-roster-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
}

.page-about .about-roster-label {
  font-size: 15px;
  font-weight: 500;
  color: var(--ink);
}

.page-about .about-roster-count {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--brass);
}

.page-about .about-roster-bar {
  position: relative;
  height: 10px;
  border-radius: 5px;
  background: var(--paper);
  border: 1px solid var(--line-soft);
  overflow: hidden;
}

.page-about .about-roster-fill {
  display: block;
  height: 100%;
  width: var(--share, 0%);
  background: var(--bar-color, var(--jade));
  border-radius: 5px 0 0 5px;
  transition: filter .16s var(--ease);
}

.page-about .about-roster-item:hover .about-roster-fill,
.page-about .about-roster-item:focus-within .about-roster-fill {
  filter: brightness(1.14);
}

.page-about .about-roster-item:nth-child(1) { --share: 45.6%; --bar-color: var(--jade); }
.page-about .about-roster-item:nth-child(2) { --share: 22.1%; --bar-color: var(--clay); }
.page-about .about-roster-item:nth-child(3) { --share: 17.6%; --bar-color: var(--gold); }
.page-about .about-roster-item:nth-child(4) { --share: 14.7%; --bar-color: var(--brass); }

/* ---------- 条目来源 ---------- */
.page-about .about-sources-grid {
  display: grid;
  gap: 32px;
  margin-top: 20px;
}

.page-about .about-source-block p {
  max-width: 34em;
  font-size: 16px;
  line-height: 1.85;
  color: var(--grey);
}

.page-about .about-source-title {
  margin: 0 0 12px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 20px;
  line-height: 1.4;
  color: var(--ink);
}

.page-about .about-steps {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
}

.page-about .about-step {
  background: var(--paper);
  padding: 14px 16px;
  display: grid;
  grid-template-columns: 62px minmax(0, 1fr);
  align-items: start;
  gap: 12px;
}

.page-about .about-step-tag {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--paper);
  background: var(--moss);
  border-radius: 2px;
  padding: 3px 0;
  text-align: center;
}

.page-about .about-step-text {
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink);
}

.page-about .about-source-foot {
  margin: 0;
  padding-left: 12px;
  border-left: 2px solid var(--line);
  font-size: 14px;
  line-height: 1.75;
  color: var(--brass);
  max-width: 34em;
}

/* ---------- 服务方式 ---------- */
.page-about .about-service-grid {
  display: grid;
  gap: 20px;
  margin-top: 20px;
}

.page-about .about-service-card {
  padding: 22px 20px;
  border-radius: var(--about-card-radius);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-about .about-service-card .card-title {
  margin: 0;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 19px;
  line-height: 1.45;
}

.page-about .about-service-card .card-text {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
}

.page-about .card--ink .card-text {
  color: rgba(246, 241, 231, .82);
}

.page-about .card--ink .card-title {
  color: var(--rice);
}

.page-about .about-service-meta {
  margin: auto 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--line-soft);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .02em;
  color: var(--brass);
  line-height: 1.7;
  word-break: break-word;
}

.page-about .card--ink .about-service-meta {
  border-top-color: rgba(201, 162, 39, .3);
  color: var(--gold);
}

.page-about .about-service-note {
  margin: 24px 0 0;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--grey);
}

/* ---------- 延伸入口 ---------- */
.page-about .about-next-grid {
  display: grid;
  gap: 1px;
  margin-top: 20px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
}

.page-about .about-next-card {
  display: grid;
  gap: 8px;
  padding: 20px 18px;
  background: var(--rice);
  text-decoration: none;
  color: inherit;
  border-left: 3px solid transparent;
  transition: background-color .16s var(--ease), border-color .16s var(--ease), transform .16s var(--ease);
}

.page-about .about-next-card:hover,
.page-about .about-next-card:focus-visible {
  background: var(--paper);
  border-left-color: var(--gold);
  transform: translateX(3px);
}

.page-about .about-next-num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--brass);
}

.page-about .about-next-title {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 18px;
  color: var(--ink);
}

.page-about .about-next-text {
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--grey);
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-stat {
    padding: 18px 16px 20px;
  }

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

  .page-about .about-next-card {
    border-left: 1px solid transparent;
    border-top: 3px solid transparent;
  }

  .page-about .about-next-card:hover,
  .page-about .about-next-card:focus-visible {
    border-left-color: transparent;
    border-top-color: var(--gold);
    transform: translateY(-3px);
  }

  .page-about .about-facts li {
    padding: 20px;
  }
}

@media (min-width: 860px) {
  .page-about .about-wrap {
    padding-top: 28px;
  }

  .page-about .about-timeline-grid {
    grid-template-columns: minmax(200px, 268px) minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

  .page-about .about-timeline-figure {
    position: sticky;
    top: 96px;
  }

  .page-about .about-purpose-body {
    grid-template-columns: minmax(0, 1.4fr) minmax(220px, 0.9fr);
    gap: 40px;
    align-items: start;
  }

  .page-about .about-team-grid {
    grid-template-columns: minmax(0, 1fr) minmax(280px, 0.9fr);
    gap: 40px;
    align-items: start;
  }

  .page-about .about-roster {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px 36px;
  }

  .page-about .about-sources-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 44px;
  }

  .page-about .about-service-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
  }
}

@media (min-width: 1180px) {
  .page-about .about-timeline-grid {
    grid-template-columns: minmax(220px, 300px) minmax(0, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-channel,
  .page-about .about-next-card,
  .page-about .about-node-marker,
  .page-about .about-roster-fill {
    transition: none;
  }
}
</PAGE_CSS>>>