/* ===== 我们是谁 · 高原数据团队画册 ===== */
.page-about {
  --about-gap: clamp(20px, 3.2vw, 40px);
}

/* ---------- 面包屑与首屏 ---------- */
.page-about .breadcrumbs {
  padding-top: clamp(20px, 4vw, 36px);
}

.page-about .about-open {
  padding-block: clamp(26px, 6vw, 60px) clamp(22px, 4vw, 38px);
}

.page-about .about-open__title {
  font-family: var(--font-display);
  font-weight: 200;
  font-size: clamp(34px, 7.2vw, 72px);
  line-height: 1.05;
  letter-spacing: 0.01em;
  color: var(--ink-blue);
  margin: 14px 0 0;
  max-width: 20ch;
}

.page-about .about-open__lede {
  margin: clamp(18px, 3vw, 30px) 0 0;
  max-width: 46rem;
  color: var(--ink);
}

.page-about .about-open__figure {
  margin: clamp(30px, 5vw, 60px) 0 0;
}

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

/* ---------- 通用章节排版 ---------- */
.page-about .section__index {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 300;
  font-size: 15px;
  letter-spacing: 0.16em;
  color: var(--sunset);
  margin: 0;
}

.page-about .section__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(26px, 4.4vw, 36px);
  line-height: 1.24;
  color: var(--ink-blue);
  margin: 10px 0 0;
  max-width: 24ch;
}

.page-about .section__lede {
  margin: 14px 0 0;
  max-width: 42rem;
  color: var(--gray);
  font-size: clamp(15.5px, 1.6vw, 17px);
  line-height: 1.75;
}

/* ---------- 01 起点 ---------- */
.page-about .about-origin__grid {
  display: grid;
  gap: var(--about-gap);
  grid-template-columns: 1fr;
}

.page-about .about-origin__body p {
  margin: 0;
  font-size: clamp(15.5px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--ink);
}

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

.page-about .about-origin__body p.about-origin__note {
  margin-top: 22px;
  padding-top: 16px;
  border-top: 1px solid var(--rule);
  font-size: 14px;
  line-height: 1.7;
  color: var(--gray);
}

@media (min-width: 900px) {
  .page-about .about-origin__grid {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    gap: clamp(32px, 5vw, 72px);
  }
}

/* ---------- 02 团队 ---------- */
.page-about .about-team__grid {
  display: grid;
  gap: clamp(16px, 2.4vw, 26px);
  grid-template-columns: 1fr;
  margin-top: clamp(26px, 4vw, 44px);
}

.page-about .team-card {
  background: var(--white);
  border: 1px solid var(--rule);
  border-radius: var(--radius-md);
  padding: clamp(20px, 2.8vw, 30px);
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
}

.page-about .team-card__count {
  font-family: var(--font-display);
  font-weight: 200;
  font-size: clamp(46px, 7vw, 68px);
  line-height: 1;
  color: var(--sunset);
  font-variant-numeric: tabular-nums;
  margin: 0;
}

.page-about .team-card__role {
  margin: 8px 0 0;
  font-size: 12.5px;
  letter-spacing: 0.1em;
  color: var(--gray);
}

.page-about .team-card__title {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(19px, 2.2vw, 22px);
  line-height: 1.35;
  color: var(--ink);
}

.page-about .team-card__body {
  margin: 8px 0 0;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--gray);
}

@media (min-width: 720px) {
  .page-about .about-team__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-about .about-team__grid > .team-card:nth-child(2) {
    margin-top: 20px;
  }
  .page-about .about-team__grid > .team-card:nth-child(3) {
    margin-top: 40px;
  }
}

/* ---------- 03 时间线 ---------- */
.page-about .tl-list {
  list-style: none;
  margin: clamp(28px, 4.5vw, 52px) 0 0;
  padding: 0 0 0 30px;
  position: relative;
}

.page-about .tl-list::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: linear-gradient(180deg, var(--lake) 0%, var(--lake-soft) 55%, var(--rule-strong) 100%);
}

.page-about .tl-item {
  position: relative;
  padding-bottom: clamp(26px, 4vw, 42px);
}

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

.page-about .tl-item::before {
  content: "";
  position: absolute;
  left: -30px;
  top: 0.55em;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--neon);
  box-shadow: 0 0 0 4px var(--paper);
}

.page-about .tl-year {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 200;
  font-size: clamp(30px, 6vw, 46px);
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--ink-blue);
  font-variant-numeric: tabular-nums;
}

.page-about .tl-title {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(18px, 2.4vw, 22px);
  line-height: 1.4;
  color: var(--ink);
}

.page-about .tl-text {
  margin: 6px 0 0;
  max-width: 44rem;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--gray);
}

.page-about .about-timeline__figure {
  margin: clamp(30px, 5vw, 54px) 0 0;
}

/* ---------- 04 数据整理 ---------- */
.page-about .about-data__layout {
  display: grid;
  gap: clamp(28px, 4vw, 56px);
  grid-template-columns: 1fr;
  margin-top: clamp(26px, 4vw, 44px);
}

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

.page-about .flow-step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  padding: clamp(16px, 2.4vw, 24px) 0;
  border-top: 1px solid var(--rule);
}

.page-about .flow-step:last-child {
  border-bottom: 1px solid var(--rule);
}

.page-about .flow-step__no {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 300;
  font-size: 21px;
  line-height: 1.4;
  color: var(--sunset);
  font-variant-numeric: tabular-nums;
}

.page-about .flow-step__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(17px, 2vw, 20px);
  line-height: 1.4;
  color: var(--ink);
}

.page-about .flow-step__text {
  margin: 6px 0 0;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--gray);
}

.page-about .about-data__aside {
  display: grid;
  gap: clamp(18px, 2.6vw, 26px);
}

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

.page-about .about-data__figure img {
  aspect-ratio: 3 / 2;
}

.page-about .version-note {
  background: var(--lake-soft);
  border-radius: var(--radius-md);
  padding: clamp(18px, 2.6vw, 28px);
}

.page-about .version-note__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(17px, 2vw, 20px);
  line-height: 1.4;
  color: var(--ink-blue);
}

.page-about .version-note p {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink);
}

@media (min-width: 960px) {
  .page-about .about-data__layout {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: start;
  }
}

/* ---------- 05 合作生态 ---------- */
.page-about .eco-grid {
  display: grid;
  gap: clamp(16px, 2.4vw, 26px);
  grid-template-columns: 1fr;
  margin-top: clamp(26px, 4vw, 44px);
}

.page-about .eco-card {
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: var(--radius-lg);
  padding: clamp(20px, 2.8vw, 32px);
  transition: box-shadow 220ms var(--ease), border-color 220ms var(--ease);
}

.page-about .eco-card:hover {
  box-shadow: var(--shadow-float);
  border-color: var(--lake-soft);
}

.page-about .eco-card__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(18px, 2.2vw, 21px);
  line-height: 1.4;
  color: var(--ink);
}

.page-about .eco-card__body {
  margin: 8px 0 0;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--gray);
}

@media (min-width: 760px) {
  .page-about .eco-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    padding-bottom: 52px;
  }
  .page-about .eco-grid > .eco-card:nth-child(2) {
    transform: translateY(24px);
  }
  .page-about .eco-grid > .eco-card:nth-child(3) {
    transform: translateY(48px);
  }
}

.page-about .asset-map {
  margin-top: clamp(30px, 5vw, 56px);
  background: var(--white);
  border: 1px solid var(--rule);
  border-radius: var(--radius-lg);
  padding: clamp(22px, 3vw, 36px);
}

.page-about .asset-map__core {
  display: inline-block;
  margin: 0;
  padding: 9px 18px;
  border-radius: var(--radius-pill);
  background: var(--ink-blue);
  color: var(--white);
  font-size: 13px;
  letter-spacing: 0.08em;
}

.page-about .asset-map__branches {
  list-style: none;
  margin: 20px 0 0;
  padding: 0 0 0 30px;
  position: relative;
}

.page-about .asset-map__branches::before {
  content: "";
  position: absolute;
  left: 6px;
  top: -14px;
  bottom: 16px;
  width: 1px;
  background: var(--rule-strong);
}

.page-about .asset-map__branch {
  position: relative;
  padding-block: 8px;
  font-size: 15.5px;
  line-height: 1.7;
  color: var(--ink);
}

.page-about .asset-map__branch::before {
  content: "";
  position: absolute;
  left: -24px;
  top: 50%;
  width: 24px;
  height: 1px;
  background: var(--rule-strong);
  transform: translateY(-50%);
}

.page-about .asset-map__branch::after {
  content: "";
  position: absolute;
  left: -28.5px;
  top: 50%;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--neon);
  transform: translateY(-50%);
  box-shadow: 0 0 0 3px var(--white);
}

/* ---------- 06 接下来 ---------- */
.page-about .next-list {
  display: grid;
  gap: clamp(18px, 2.6vw, 30px);
  grid-template-columns: 1fr;
  margin-top: clamp(26px, 4vw, 44px);
}

.page-about .next-item {
  border-top: 3px solid var(--sunset);
  padding-top: clamp(16px, 2vw, 22px);
}

.page-about .next-item__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(17px, 2vw, 20px);
  line-height: 1.45;
  color: var(--ink);
}

.page-about .next-item__text {
  margin: 8px 0 0;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--gray);
}

@media (min-width: 760px) {
  .page-about .next-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 结尾入口 ---------- */
.page-about .about-cta {
  border-top: 1px solid var(--rule);
  margin-top: clamp(30px, 5vw, 60px);
}

.page-about .about-cta__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 200;
  font-size: clamp(26px, 4.6vw, 42px);
  line-height: 1.2;
  color: var(--ink-blue);
  max-width: 22ch;
}

.page-about .about-cta__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-about .about-cta__note {
  margin: clamp(18px, 2.6vw, 26px) 0 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--gray);
}

.page-about .about-cta__note a {
  color: var(--lake);
  text-decoration: underline;
  text-underline-offset: 3px;
}

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