.page-about {
  --about-rail: 200px;
  --about-gap: clamp(26px, 4vw, 60px);
  display: block;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  display: grid;
  gap: clamp(26px, 5vw, 52px);
  align-items: center;
  padding: clamp(20px, 4vw, 48px) 0 clamp(34px, 6vw, 72px);
}

.page-about .about-hero__text .lead {
  margin-top: 18px;
  max-width: 60ch;
}

.page-about .about-hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-about .hero-facts {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 22px;
}

.page-about .hero-fact {
  border-top: 1px solid rgba(247, 249, 255, 0.16);
  padding-top: 10px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.page-about .hero-fact__num {
  font-family: var(--font-mono);
  font-size: clamp(1.4rem, 3.4vw, 1.9rem);
  font-weight: 700;
  color: var(--gold);
  letter-spacing: -0.01em;
}

.page-about .hero-fact__label {
  font-size: 0.875rem;
  color: var(--star-70);
}

.page-about .about-hero__visual {
  position: relative;
  margin: 0;
  border-radius: var(--r-panel);
  overflow: hidden;
  border: 1px solid rgba(53, 224, 214, 0.22);
  background: linear-gradient(160deg, var(--galaxy), var(--ink-deep) 58%, #0b1238);
  box-shadow: 0 34px 80px -34px rgba(6, 11, 34, 0.95);
}

.page-about .about-hero__visual img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  opacity: 0.92;
}

.page-about .about-hero__visual figcaption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 44px 20px 18px;
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--star-92);
  background: linear-gradient(180deg, rgba(6, 11, 34, 0), rgba(6, 11, 34, 0.92));
}

/* ---------- 主体两栏 + 刻度 ---------- */
.page-about .about-body {
  display: block;
}

.page-about .about-rail {
  display: none;
}

.page-about .about-chapters {
  display: flex;
  flex-direction: column;
  gap: clamp(26px, 4vw, 48px);
  padding-bottom: clamp(48px, 8vw, 96px);
}

/* ---------- 章节画板 ---------- */
.page-about .about-chapter {
  padding: clamp(24px, 4.4vw, 52px);
}

.page-about .about-chapter__head {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 20px;
}

.page-about .about-chapter .section-num {
  font-size: clamp(2.3rem, 7vw, 3.6rem);
  line-height: 1;
}

.page-about .about-chapter__body p {
  max-width: 66ch;
  color: var(--ink-88);
}

.page-about .about-chapter__body p + p {
  margin-top: 14px;
}

.page-about .about-next {
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px dashed var(--paper-shade);
  font-size: 0.9375rem;
  color: var(--ink-62);
}

/* ---------- 标签组 ---------- */
.page-about .tag-groups {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-top: 28px;
}

.page-about .tag-group {
  padding: 18px;
  border-radius: var(--r-card);
  background: rgba(225, 214, 193, 0.42);
  border: 1px solid rgba(90, 60, 196, 0.16);
}

.page-about .tag-group__title {
  margin: 0 0 6px;
  font-size: 1.05rem;
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--ink);
}

.page-about .tag-group__desc {
  margin: 0 0 12px;
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--ink-62);
  max-width: none;
}

.page-about .tag-group__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* ---------- 成长轨迹 ---------- */
.page-about .about-chapter__body--split {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
}

.page-about .timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 8px;
  bottom: 24px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--gold), rgba(90, 60, 196, 0.28));
}

.page-about .timeline-item {
  position: relative;
  padding-left: 38px;
  margin-bottom: 24px;
}

.page-about .timeline-item:last-child {
  margin-bottom: 0;
}

.page-about .timeline-item__dot {
  position: absolute;
  left: 3px;
  top: 6px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--paper);
  border: 2px solid var(--gold);
  box-shadow: 0 0 0 4px rgba(242, 178, 80, 0.16);
}

.page-about .timeline-item__stage {
  margin: 0 0 4px;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.06em;
  color: var(--nebula);
}

.page-about .timeline-item h3 {
  margin: 0 0 6px;
}

.page-about .timeline-item p {
  margin: 0;
  color: var(--ink-62);
  font-size: 0.9375rem;
}

.page-about .about-figure {
  margin: 0;
  align-self: start;
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: var(--r-card);
}

.page-about .about-figure--wide img {
  aspect-ratio: 2 / 1;
}

.page-about .about-figure .media__caption {
  margin-top: 10px;
  font-size: 0.8125rem;
  line-height: 1.65;
  color: var(--ink-62);
}

/* ---------- 团队 ---------- */
.page-about .team-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin-top: 26px;
}

.page-about .team-card {
  padding: 22px;
  border-radius: var(--r-card);
  background: linear-gradient(160deg, rgba(90, 60, 196, 0.1), rgba(225, 214, 193, 0.5));
  border: 1px solid rgba(90, 60, 196, 0.18);
}

.page-about .team-card__count {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: clamp(2rem, 5vw, 2.6rem);
  font-weight: 700;
  line-height: 1;
  color: var(--nebula);
}

.page-about .team-card__count span {
  font-size: 0.9rem;
  margin-left: 4px;
  color: var(--ink-62);
  font-weight: 400;
}

.page-about .team-card h3 {
  margin: 0 0 8px;
}

.page-about .team-card p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--ink-62);
  max-width: none;
}

/* ---------- 合作网络 ---------- */
.page-about .network-stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: 26px;
}

.page-about .network-stats .stat {
  padding: 18px 20px;
  border-radius: var(--r-card);
  background: rgba(46, 111, 183, 0.08);
  border-left: 3px solid var(--bay);
}

.page-about .network-stats .stat__value {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.7rem, 4vw, 2.3rem);
  font-weight: 700;
  color: var(--ink);
  line-height: 1.1;
  margin-bottom: 6px;
}

.page-about .network-stats .stat__label {
  display: block;
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--ink-62);
}

/* ---------- 折叠问答 ---------- */
.page-about .about-acc {
  margin-top: 26px;
}

.page-about .about-acc__title {
  margin: 0;
  font-size: 1.0625rem;
  font-family: var(--font-body);
  font-weight: 600;
}

.page-about .about-acc .accordion__panel p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--ink-62);
  max-width: 64ch;
}

/* ---------- 收束轨道 ---------- */
.page-about .cta-rail {
  position: relative;
  padding: clamp(26px, 4.6vw, 54px);
  border-radius: var(--r-panel);
  background: linear-gradient(150deg, var(--galaxy), var(--ink-deep) 72%);
  border: 1px solid rgba(53, 224, 214, 0.2);
  overflow: hidden;
}

.page-about .cta-rail__line {
  height: 2px;
  margin-bottom: 26px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--gold));
}

.page-about .cta-rail h2 {
  margin: 0 0 12px;
  color: var(--star);
}

.page-about .cta-rail p {
  margin: 0;
  max-width: 62ch;
  color: var(--star-70);
  line-height: 1.8;
}

.page-about .cta-rail__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 760px) {
  .page-about .tag-groups {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

@media (min-width: 980px) {
  .page-about .about-hero {
    grid-template-columns: 1.05fr 0.95fr;
  }

  .page-about .about-chapter__body--split {
    grid-template-columns: 1.1fr 0.9fr;
    align-items: start;
  }

  .page-about .about-chapter__body--split .about-figure {
    position: sticky;
    top: 108px;
  }

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

  .page-about .about-chapter:nth-child(even) {
    margin-left: clamp(0px, 2.6vw, 40px);
  }
}

@media (min-width: 1024px) {
  .page-about .about-body {
    display: grid;
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
    gap: var(--about-gap);
    align-items: start;
  }

  .page-about .about-rail {
    display: block;
    position: sticky;
    top: 104px;
    align-self: start;
    padding: 18px 16px;
    border-radius: var(--r-card);
    background: rgba(43, 26, 99, 0.42);
    border: 1px solid rgba(53, 224, 214, 0.16);
  }

  .page-about .about-rail__title {
    margin: 0 0 12px;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.14em;
    color: var(--gold);
  }

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

  .page-about .about-rail__nav .rail-link {
    display: block;
    padding: 7px 10px;
    border-radius: var(--r-pill);
    font-size: 0.875rem;
    color: var(--star-70);
    text-decoration: none;
    transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
  }

  .page-about .about-rail__nav .rail-link:hover,
  .page-about .about-rail__nav .rail-link:focus-visible {
    background: rgba(53, 224, 214, 0.12);
    color: var(--star);
  }

  .page-about .about-rail__nav .rail-link[aria-current="true"] {
    background: linear-gradient(90deg, rgba(242, 178, 80, 0.22), rgba(53, 224, 214, 0.08));
    color: var(--gold);
  }

  .page-about .about-rail .to-top {
    margin-top: 14px;
    width: 100%;
    justify-content: center;
  }

  .page-about .about-chapter {
    padding: clamp(34px, 4vw, 56px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-rail__nav .rail-link {
    transition: none;
  }
}
</final>
</result>