.page-about {
  --about-card: linear-gradient(180deg, rgba(15, 20, 32, .94), rgba(6, 7, 12, .78));
  --about-radius: 20px;
  --about-rule: rgba(46, 230, 230, .38);
  --about-rule-warm: rgba(255, 46, 139, .34);
  --about-soft: rgba(46, 230, 230, .10);
  position: relative;
  z-index: 1;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding-top: clamp(18px, 4vw, 40px);
  padding-bottom: clamp(40px, 6vw, 76px);
}

.page-about .about-hero__frame {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 5vw, 64px) clamp(22px, 4.5vw, 60px);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background:
    radial-gradient(120% 150% at 0% 0%, rgba(46, 230, 230, .14), transparent 56%),
    radial-gradient(110% 130% at 100% 100%, rgba(255, 46, 139, .14), transparent 58%),
    linear-gradient(160deg, #0F1420 0%, #06070C 100%);
}

.page-about .about-hero__frame::before,
.page-about .about-hero__frame::after {
  content: "";
  position: absolute;
  width: clamp(34px, 5vw, 56px);
  height: clamp(34px, 5vw, 56px);
  pointer-events: none;
}

.page-about .about-hero__frame::before {
  top: 14px;
  left: 14px;
  border-top: 1px solid var(--cyan);
  border-left: 1px solid var(--cyan);
  border-top-left-radius: 14px;
}

.page-about .about-hero__frame::after {
  right: 14px;
  bottom: 14px;
  border-right: 1px solid var(--magenta);
  border-bottom: 1px solid var(--magenta);
  border-bottom-right-radius: 14px;
}

.page-about .about-hero__idx {
  color: var(--cyan);
  margin-bottom: clamp(14px, 2.5vw, 24px);
}

.page-about .about-hero__title {
  margin: 0 0 clamp(16px, 2.4vw, 26px);
  font-size: clamp(32px, 5.6vw, 62px);
  line-height: 1.12;
  letter-spacing: -.01em;
  font-weight: 800;
  color: var(--paper);
  max-width: 18ch;
}

.page-about .about-hero__lede {
  margin: 0;
  max-width: 62ch;
  font-size: clamp(15px, 1.15vw, 17px);
  line-height: 1.82;
  color: var(--text-soft);
}

.page-about .about-hero__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(16px, 2.4vw, 28px);
  margin: clamp(28px, 4vw, 46px) 0 0;
  padding: clamp(20px, 3vw, 28px) 0 0;
  border-top: 1px solid var(--line-soft);
  list-style: none;
}

.page-about .about-hero__facts li {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-about .fact-num {
  font-family: var(--font-mono);
  font-size: clamp(28px, 3.6vw, 44px);
  font-weight: 200;
  line-height: 1;
  color: var(--paper);
  letter-spacing: -.02em;
}

.page-about .about-hero__facts li:nth-child(1) .fact-num,
.page-about .about-hero__facts li:nth-child(3) .fact-num {
  background: var(--grad-rank);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.page-about .about-hero__facts .mono-label {
  color: var(--muted);
}

/* ---------- 通用区块头 ---------- */
.page-about .about-head {
  margin-bottom: clamp(28px, 4vw, 52px);
  max-width: 72ch;
}

.page-about .about-head .mono-label {
  color: var(--cyan);
  display: block;
  margin-bottom: 12px;
}

.page-about .about-head h2 {
  margin: 0 0 14px;
  font-size: clamp(24px, 3.4vw, 38px);
  line-height: 1.22;
  font-weight: 800;
  color: var(--paper);
}

.page-about .about-head__lede {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-soft);
}

/* ---------- 时间轴 ---------- */
.page-about .about-chronology {
  padding: clamp(44px, 6vw, 88px) 0 clamp(28px, 4vw, 52px);
  border-top: 1px solid var(--line-soft);
}

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

.page-about .chrono-item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  padding: clamp(24px, 3.4vw, 40px) 0;
  border-top: 1px solid var(--line-soft);
  position: relative;
}

.page-about .chrono-item:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-about .chrono-item__side {
  display: flex;
  align-items: baseline;
  gap: 14px;
}

.page-about .chrono-year {
  font-family: var(--font-mono);
  font-size: clamp(34px, 5.4vw, 68px);
  font-weight: 200;
  line-height: .95;
  letter-spacing: -.03em;
  background: linear-gradient(120deg, #3BE8F0 0%, #FF3C8E 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.page-about .chrono-mark {
  color: var(--muted);
  white-space: nowrap;
}

.page-about .chrono-item__main h3 {
  margin: 0 0 12px;
  font-size: clamp(18px, 2vw, 23px);
  font-weight: 700;
  color: var(--paper);
  line-height: 1.35;
}

.page-about .chrono-item__main p {
  margin: 0 0 12px;
  max-width: 66ch;
  font-size: 16px;
  line-height: 1.82;
  color: var(--text-soft);
}

.page-about .chrono-item__main p:last-child {
  margin-bottom: 0;
}

.page-about .chrono-figure {
  margin: clamp(18px, 2.4vw, 28px) 0 0;
}

/* ---------- 图片容器 ---------- */
.page-about .about-figure {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--about-radius);
  background: var(--ink-2);
  aspect-ratio: 3 / 2;
}

.page-about .about-figure--wide {
  aspect-ratio: 16 / 9;
}

.page-about .about-figure--photo {
  aspect-ratio: 16 / 9;
}

.page-about .about-figure--banner {
  aspect-ratio: 21 / 9;
}

.page-about .about-figure img {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  max-width: 100%;
  filter: saturate(.92) contrast(1.06) brightness(.92);
}

.page-about .about-figure::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(120% 120% at 50% 50%, transparent 42%, rgba(6, 7, 12, .68) 100%),
    repeating-linear-gradient(to bottom, rgba(255, 255, 255, .045) 0 1px, transparent 1px 5px);
}

.page-about .media-caption {
  display: block;
  margin: 10px 0 0;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--muted);
  font-family: var(--font-mono);
}

/* ---------- 数据同步 ---------- */
.page-about .about-sync {
  padding: clamp(48px, 6.5vw, 96px) 0;
  border-top: 1px solid var(--line-soft);
}

.page-about .sync-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 36px);
  align-items: start;
}

.page-about .sync-panel {
  padding: clamp(22px, 3vw, 34px);
  background: var(--about-card);
}

.page-about .sync-metrics {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
}

.page-about .sync-metrics li {
  padding: 18px 0;
  border-top: 1px solid var(--line-soft);
}

.page-about .sync-metrics li:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-about .metric-num {
  font-family: var(--font-mono);
  font-size: clamp(38px, 5vw, 62px);
  font-weight: 200;
  line-height: 1;
  letter-spacing: -.03em;
  color: var(--cyan);
}

.page-about .metric-unit {
  margin-left: 8px;
  font-size: 13px;
  letter-spacing: .14em;
  color: var(--muted);
  text-transform: uppercase;
}

.page-about .sync-metrics p {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-soft);
}

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

.page-about .sync-note {
  margin: clamp(26px, 3.4vw, 44px) 0 0;
  padding: 18px 20px;
  border-left: 2px solid var(--magenta);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  background: rgba(255, 46, 139, .07);
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-soft);
}

.page-about .sync-note a,
.page-about .legal-list a,
.page-about .legal-foot a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(46, 230, 230, .4);
}

.page-about .sync-note a:hover,
.page-about .legal-list a:hover,
.page-about .legal-foot a:hover {
  color: var(--paper);
  border-bottom-color: var(--paper);
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  padding: clamp(48px, 6.5vw, 96px) 0;
  border-top: 1px solid var(--line-soft);
}

.page-about .team-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(16px, 2.2vw, 24px);
}

.page-about .team-card {
  position: relative;
  padding: clamp(24px, 3vw, 34px);
  border: 1px solid var(--line);
  border-radius: var(--about-radius);
  background: var(--about-card);
  overflow: hidden;
}

.page-about .team-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--grad-line);
  opacity: .7;
}

.page-about .team-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(46px, 6vw, 76px);
  font-weight: 200;
  line-height: 1;
  letter-spacing: -.04em;
  color: var(--paper);
  margin-bottom: 14px;
}

.page-about .team-card h3 {
  margin: 0 0 10px;
  font-size: 19px;
  font-weight: 700;
  color: var(--cyan);
}

.page-about .team-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--text-soft);
}

/* ---------- 留白主张 ---------- */
.page-about .about-quiet {
  padding: clamp(56px, 9vw, 128px) 0;
  border-top: 1px solid var(--line-soft);
  background:
    radial-gradient(60% 120% at 12% 50%, rgba(46, 230, 230, .12), transparent 70%),
    radial-gradient(60% 120% at 88% 50%, rgba(255, 46, 139, .12), transparent 70%);
}

.page-about .about-quiet__line {
  margin: 0;
  font-size: clamp(22px, 4.2vw, 44px);
  font-weight: 200;
  line-height: 1.4;
  letter-spacing: .01em;
  color: var(--paper);
  max-width: 20ch;
  font-family: var(--font-mono);
}

/* ---------- 合作生态 ---------- */
.page-about .about-ecosystem {
  padding: clamp(48px, 6.5vw, 96px) 0;
  border-top: 1px solid var(--line-soft);
}

.page-about .eco-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(16px, 2.2vw, 22px);
}

.page-about .eco-card {
  position: relative;
  padding: clamp(22px, 2.8vw, 30px);
  border: 1px solid var(--line);
  border-radius: var(--about-radius);
  background: linear-gradient(180deg, rgba(15, 20, 32, .9), rgba(6, 7, 12, .6));
  transition: border-color .2s var(--ease), transform .2s var(--ease);
}

.page-about .eco-card:hover,
.page-about .eco-card:focus-within {
  border-color: var(--about-rule);
  transform: translateY(-2px);
}

.page-about .eco-card:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-about .eco-card__tag {
  color: var(--orange);
  display: block;
  margin-bottom: 10px;
}

.page-about .eco-card h3 {
  margin: 0 0 10px;
  font-size: clamp(17px, 1.7vw, 20px);
  font-weight: 700;
  color: var(--paper);
  line-height: 1.4;
}

.page-about .eco-card__brief {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-soft);
}

.page-about .eco-card__more {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  margin-top: 14px;
  transition: opacity .22s var(--ease), max-height .28s var(--ease), margin-top .22s var(--ease);
}

.page-about .eco-figure {
  margin: clamp(26px, 3.6vw, 46px) 0 0;
}

/* ---------- 运营信息 ---------- */
.page-about .about-legal {
  padding: clamp(44px, 5.5vw, 80px) 0 clamp(56px, 7vw, 104px);
  border-top: 1px solid var(--line-soft);
}

.page-about .legal-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 40px);
}

.page-about .legal-lead .mono-label {
  color: var(--muted);
  display: block;
  margin-bottom: 12px;
}

.page-about .legal-lead h2 {
  margin: 0;
  font-size: clamp(22px, 2.8vw, 32px);
  font-weight: 700;
  color: var(--paper);
}

.page-about .legal-list {
  margin: 0;
  border-top: 1px solid var(--line-soft);
}

.page-about .legal-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-about .legal-row dt {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--muted);
}

.page-about .legal-row dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-soft);
}

.page-about .legal-foot {
  margin: clamp(24px, 3vw, 36px) 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

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

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

  .page-about .legal-row {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    gap: 16px;
    align-items: baseline;
  }
}

@media (min-width: 860px) {
  .page-about .chrono-item {
    grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
    gap: clamp(20px, 3vw, 46px);
  }

  .page-about .chrono-item__side {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .page-about .chrono-item__side::after {
    content: "";
    display: block;
    width: 46px;
    height: 1px;
    margin-top: 6px;
    background: var(--grad-line);
    opacity: .7;
  }

  .page-about .sync-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: clamp(24px, 3.4vw, 46px);
  }

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

  .page-about .eco-card__more {
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    margin-top: 0;
    padding-top: 0;
    border-top-color: transparent;
  }

  .page-about .eco-card:hover .eco-card__more,
  .page-about .eco-card:focus-within .eco-card__more {
    max-height: 8em;
    opacity: 1;
    margin-top: 14px;
    padding-top: 12px;
    border-top-color: var(--line);
  }

  .page-about .legal-grid {
    grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
    gap: clamp(28px, 4vw, 56px);
  }
}

@media (min-width: 1100px) {
  .page-about .about-hero__frame {
    padding-right: clamp(60px, 7vw, 110px);
  }

  .page-about .about-head h2 {
    max-width: 26ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .eco-card,
  .page-about .eco-card__more {
    transition: none;
  }
}
<<<END>>>