.page-about {
  --about-line: rgba(53, 230, 255, 0.14);
  --about-line-soft: rgba(126, 158, 176, 0.22);
  position: relative;
}

/* ====== 面包屑 ====== */
.page-about .page-about__crumbs {
  padding-top: clamp(20px, 3vw, 32px);
}

/* ====== 首屏 ====== */
.page-about .about-hero {
  padding: clamp(28px, 5vw, 56px) 0 clamp(48px, 8vw, 88px);
}

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(28px, 5vw, 56px);
}

.page-about .about-hero__copy .eyebrow {
  color: var(--c-cyan);
}

.page-about .about-hero__copy h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(32px, 6.2vw, 84px);
  line-height: 1.02;
  letter-spacing: -0.01em;
  margin: 16px 0 22px;
  color: var(--c-mist);
  text-wrap: balance;
}

.page-about .about-hero__copy .lede {
  color: var(--c-steel);
  max-width: 36ch;
}

.page-about .about-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.page-about .about-hero__figure {
  margin: 0;
}

.page-about .about-hero__figure .figure__media {
  aspect-ratio: 14 / 9;
  border-radius: var(--radius-l);
  overflow: hidden;
}

.page-about .about-hero__figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
  }
}

/* ====== 品牌起点 ====== */
.page-about .about-origin {
  padding: clamp(48px, 8vw, 96px) 0;
}

.page-about .about-origin__grid {
  display: grid;
  gap: clamp(24px, 4vw, 56px);
}

.page-about .about-origin__head .section-title {
  margin-top: 12px;
  max-width: 18ch;
}

.page-about .about-origin__body {
  max-width: 38rem;
  color: var(--c-steel);
}

.page-about .about-origin__body p + p {
  margin-top: 18px;
}

@media (min-width: 900px) {
  .page-about .about-origin__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }
}

/* ====== 时间线 ====== */
.page-about .about-timeline {
  padding: clamp(48px, 8vw, 96px) 0;
}

.page-about .about-timeline__head {
  max-width: 640px;
}

.page-about .timeline {
  list-style: none;
  margin: clamp(32px, 5vw, 56px) 0 0;
  padding: 0;
  position: relative;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 34px;
  top: 16px;
  bottom: 16px;
  width: 1px;
  background: linear-gradient(to bottom, var(--c-cyan) 0%, rgba(53, 230, 255, 0.05) 100%);
}

.page-about .timeline__item {
  position: relative;
  display: grid;
  grid-template-columns: 68px minmax(0, 1fr);
  gap: 16px;
  padding: 26px 0;
}

.page-about .timeline__item + .timeline__item {
  border-top: 1px solid var(--about-line);
}

.page-about .timeline__item::before {
  content: "";
  position: absolute;
  left: 30px;
  top: 36px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--c-deep);
  border: 2px solid var(--c-cyan);
}

.page-about .timeline__num {
  font-family: var(--font-mono);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
  color: var(--c-cyan);
  letter-spacing: 0.06em;
  padding-top: 10px;
}

.page-about .timeline__body h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 600;
  color: var(--c-mist);
}

.page-about .timeline__body p {
  margin: 0;
  max-width: 34rem;
  color: var(--c-steel);
  line-height: 1.7;
}

@media (min-width: 900px) {
  .page-about .timeline::before {
    left: 44px;
  }
  .page-about .timeline__item {
    grid-template-columns: 88px minmax(0, 1fr);
    padding: 30px 0;
  }
  .page-about .timeline__item::before {
    left: 40px;
  }
}

/* ====== 团队 ====== */
.page-about .about-team {
  padding: clamp(48px, 8vw, 96px) 0;
}

.page-about .about-team .section-head {
  max-width: 640px;
}

.page-about .about-team__layout {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
  margin-top: clamp(32px, 5vw, 56px);
}

.page-about .about-team__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--about-line-soft);
  border-radius: var(--radius-m);
  overflow: hidden;
}

.page-about .about-team__stats .stat {
  padding: clamp(18px, 3vw, 28px);
  background: var(--c-deep);
}

.page-about .about-team__stats .stat__value {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 500;
  color: var(--c-cyan);
  font-variant-numeric: tabular-nums;
  line-height: 1;
}

.page-about .about-team__stats .stat__label {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  color: var(--c-steel);
  letter-spacing: 0.02em;
}

.page-about .about-team__figure {
  margin: 0;
}

.page-about .about-team__figure .figure__media {
  aspect-ratio: 10 / 7;
  border-radius: var(--radius-m);
  overflow: hidden;
}

.page-about .about-team__figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.page-about .about-team__cards {
  display: grid;
  gap: 12px;
  margin-top: clamp(28px, 4vw, 44px);
}

.page-about .team-card {
  border: 1px solid var(--about-line);
  border-radius: var(--radius-m);
  background: var(--c-navy);
  overflow: hidden;
  transition: border-color 200ms var(--ease);
}

.page-about .team-card[open] {
  border-color: rgba(53, 230, 255, 0.36);
}

.page-about .team-card summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 20px;
  user-select: none;
}

.page-about .team-card summary::-webkit-details-marker {
  display: none;
}

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

.page-about .team-card__num {
  font-family: var(--font-mono);
  font-size: 24px;
  color: var(--c-cyan);
  font-variant-numeric: tabular-nums;
  min-width: 40px;
}

.page-about .team-card__role {
  flex: 1;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 600;
  color: var(--c-mist);
  letter-spacing: 0.01em;
}

.page-about .team-card__cue {
  position: relative;
  flex: 0 0 20px;
  width: 20px;
  height: 20px;
}

.page-about .team-card__cue::before,
.page-about .team-card__cue::after {
  content: "";
  position: absolute;
  background: var(--c-cyan);
  transition: transform 200ms var(--ease);
}

.page-about .team-card__cue::before {
  left: 0;
  top: 9px;
  width: 20px;
  height: 1.5px;
}

.page-about .team-card__cue::after {
  left: 9px;
  top: 0;
  width: 1.5px;
  height: 20px;
  transform: scaleY(1);
}

.page-about .team-card[open] .team-card__cue::after {
  transform: scaleY(0);
}

.page-about .team-card__body {
  padding: 16px 20px 20px;
  border-top: 1px solid var(--about-line);
}

.page-about .team-card__body p {
  margin: 0;
  color: var(--c-steel);
  font-size: 15px;
  line-height: 1.7;
}

@media (min-width: 640px) {
  .page-about .about-team__cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-about .about-team__layout {
    grid-template-columns: minmax(0, 3fr) minmax(0, 2fr);
    align-items: start;
  }
}

/* ====== 数据流程 ====== */
.page-about .about-flow {
  padding: clamp(48px, 8vw, 96px) 0;
}

.page-about .about-flow__grid {
  display: grid;
  gap: clamp(28px, 4vw, 56px);
}

.page-about .about-flow__head .section-title {
  margin-top: 12px;
  max-width: 16ch;
}

.page-about .about-flow__stat {
  margin-top: 28px;
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
}

.page-about .about-flow__stat-num {
  font-family: var(--font-mono);
  font-size: clamp(56px, 9vw, 108px);
  font-weight: 500;
  color: var(--c-coral);
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.page-about .about-flow__stat-label {
  font-size: 14px;
  color: var(--c-steel);
  letter-spacing: 0.02em;
}

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

.page-about .flow__item {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 16px;
  padding: 22px 0;
  border-top: 1px solid var(--about-line);
}

.page-about .flow__item:last-child {
  border-bottom: 1px solid var(--about-line);
}

.page-about .flow__num {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--c-cyan);
  letter-spacing: 0.08em;
  padding-top: 6px;
}

.page-about .flow__body h3 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: clamp(18px, 2.4vw, 22px);
  font-weight: 600;
  color: var(--c-mist);
}

.page-about .flow__body p {
  margin: 0;
  color: var(--c-steel);
  font-size: 15px;
  line-height: 1.7;
}

@media (min-width: 900px) {
  .page-about .about-flow__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }
}

/* ====== 合作生态 ====== */
.page-about .about-partners {
  padding: clamp(48px, 8vw, 96px) 0;
}

.page-about .about-partners .section-head {
  max-width: 640px;
}

.page-about .partners {
  display: grid;
  gap: 16px;
  margin-top: clamp(32px, 5vw, 56px);
}

.page-about .partners__card {
  padding: clamp(22px, 3vw, 32px);
  border: 1px solid var(--about-line);
  border-radius: var(--radius-l);
  background: linear-gradient(160deg, var(--c-navy) 0%, var(--c-deep) 100%);
  transition: border-color 220ms var(--ease), transform 220ms var(--ease);
}

.page-about .partners__card:hover {
  border-color: rgba(53, 230, 255, 0.4);
  transform: translateY(-2px);
}

.page-about .partners__count {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 44px;
  font-weight: 500;
  color: var(--c-cyan);
  line-height: 1;
  font-variant-numeric: tabular-nums;
  margin-bottom: 16px;
}

.page-about .partners__card h3 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: clamp(20px, 2.6vw, 24px);
  font-weight: 600;
  color: var(--c-mist);
}

.page-about .partners__card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--c-steel);
}

.page-about .partners__tag {
  display: inline-block;
  margin-top: 20px;
  padding: 4px 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--c-steel);
  border: 1px solid var(--about-line-soft);
  border-radius: var(--radius-pill);
  transition: color 220ms var(--ease), border-color 220ms var(--ease);
}

.page-about .partners__card:hover .partners__tag {
  color: var(--c-cyan-soft);
  border-color: rgba(53, 230, 255, 0.4);
}

.page-about .about-partners__note {
  margin-top: clamp(28px, 4vw, 44px);
  padding: clamp(20px, 3vw, 28px);
  border-left: 2px solid var(--c-cyan);
  background: rgba(8, 42, 68, 0.5);
  border-radius: 0 var(--radius-m) var(--radius-m) 0;
}

.page-about .about-partners__note p {
  margin: 0;
  color: var(--c-steel);
  font-size: 15px;
  line-height: 1.75;
}

.page-about .about-partners__note p + p {
  margin-top: 10px;
}

.page-about .about-partners__note a {
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 230, 255, 0.32);
  padding-bottom: 1px;
  transition: color 200ms var(--ease), border-color 200ms var(--ease);
}

.page-about .about-partners__note a:hover {
  color: var(--c-cyan-soft);
  border-color: var(--c-cyan-soft);
}

.page-about .about-partners__figure {
  margin: clamp(28px, 4vw, 44px) 0 0;
}

.page-about .about-partners__figure .figure__media {
  aspect-ratio: 3 / 2;
  border-radius: var(--radius-l);
  overflow: hidden;
}

.page-about .about-partners__figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

@media (min-width: 800px) {
  .page-about .partners {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ====== 行业参与 ====== */
.page-about .about-recognition {
  padding: clamp(48px, 8vw, 96px) 0;
}

.page-about .about-recognition .section-head {
  max-width: 640px;
}

.page-about .recognize {
  list-style: none;
  margin: clamp(28px, 4vw, 48px) 0 0;
  padding: 0;
}

.page-about .recognize__item {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 20px;
  padding: clamp(20px, 3vw, 28px) 0;
  border-top: 1px solid var(--about-line);
}

.page-about .recognize__item:last-child {
  border-bottom: 1px solid var(--about-line);
}

.page-about .recognize__num {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--c-cyan);
  letter-spacing: 0.08em;
  padding-top: 6px;
}

.page-about .recognize__item h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: clamp(18px, 2.4vw, 22px);
  font-weight: 600;
  color: var(--c-mist);
}

.page-about .recognize__item p {
  margin: 0;
  color: var(--c-steel);
  font-size: 15px;
  line-height: 1.7;
  max-width: 44rem;
}

/* ====== 收尾引文 ====== */
.page-about .about-closing {
  padding: clamp(56px, 9vw, 120px) 0 clamp(64px, 10vw, 120px);
}

.page-about .about-closing .shell--narrow {
  max-width: 760px;
  margin: 0 auto;
}

.page-about .about-closing__quote {
  margin: 20px 0 0;
  padding: 0;
  border: none;
}

.page-about .about-closing__quote p {
  font-family: var(--font-serif);
  font-size: clamp(24px, 4vw, 38px);
  line-height: 1.4;
  color: var(--c-mist);
  letter-spacing: 0.01em;
  margin: 0;
}

.page-about .about-closing__sign {
  margin: 24px 0 0;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--c-steel);
}

.page-about .about-closing__links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: clamp(32px, 5vw, 48px);
}

@media (prefers-reduced-motion: reduce) {
  .page-about .partners__card,
  .page-about .partners__tag,
  .page-about .team-card,
  .page-about .team-card__cue::before,
  .page-about .team-card__cue::after {
    transition: none;
  }
}
<<<END>>>