.page-about {
  --about-line: rgba(53, 230, 208, 0.24);
  --about-soft-cyan: rgba(53, 230, 208, 0.10);
  --about-soft-orange: rgba(255, 122, 47, 0.10);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding-top: clamp(24px, 5vw, 64px);
  padding-bottom: clamp(20px, 3.5vw, 40px);
}

.page-about .about-hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 5vw, 56px);
}

.page-about .about-hero__crumbs {
  margin-bottom: 14px;
}

.page-about .about-hero__title {
  margin: 14px 0 0;
  display: flex;
  flex-direction: column;
  gap: 0.04em;
  font-size: clamp(30px, 8vw, 84px);
  line-height: 1.08;
  letter-spacing: 0.04em;
  font-weight: 900;
  color: var(--ice);
}

.page-about .about-hero__title-em {
  padding-left: 0.4em;
  background: linear-gradient(96deg, var(--cyan) 20%, var(--orange) 96%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.page-about .about-hero__lede {
  margin-top: 20px;
  max-width: 34rem;
}

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

.page-about .about-hero__aside {
  padding-top: 20px;
  border-top: 1px solid var(--edge);
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.page-about .about-hero__aside-note {
  color: var(--mist);
}

.page-about .about-hero__stats {
  margin: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px 18px;
}

.page-about .about-hero__stats dt {
  margin-bottom: 4px;
  font-size: var(--fs-12);
  letter-spacing: 0.18em;
  color: var(--mist);
}

.page-about .about-hero__stats dd {
  margin: 0;
  font-size: var(--fs-16);
  font-weight: 700;
  color: var(--ice);
}

.page-about .about-hero__stats .data-num {
  font-family: var(--font-mono);
  font-size: var(--fs-24);
  font-weight: 600;
  color: var(--cyan);
  letter-spacing: 0.02em;
}

.page-about .about-statusbar {
  list-style: none;
  margin: clamp(24px, 4vw, 42px) 0 0;
  padding: 14px 0 0;
  border-top: 1px solid var(--edge);
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.1em;
  color: var(--mist);
}

.page-about .about-statusbar li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

/* ---------- 出发点 ---------- */
.page-about .about-origin__inner {
  position: relative;
}

.page-about .about-origin__body {
  max-width: 36rem;
}

.page-about .about-origin__title {
  margin: 12px 0 18px;
  font-size: clamp(24px, 3.4vw, 40px);
  line-height: 1.24;
  letter-spacing: 0.02em;
  font-weight: 800;
  color: var(--ice);
}

.page-about .about-origin__body p {
  margin: 0 0 16px;
  font-size: var(--fs-16);
  line-height: 1.85;
  color: var(--mist);
  max-width: 34rem;
}

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

/* ---------- 数据来源 ---------- */
.page-about .about-data__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 48px);
}

.page-about .about-data__title {
  margin: 12px 0 16px;
  font-size: clamp(24px, 3.4vw, 38px);
  line-height: 1.26;
  font-weight: 800;
  color: var(--ice);
}

.page-about .about-data__text > p {
  margin: 0;
  font-size: var(--fs-16);
  line-height: 1.85;
  color: var(--mist);
  max-width: 34rem;
}

.page-about .about-data__flow {
  list-style: none;
  counter-reset: flow;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .about-data__flow li {
  counter-increment: flow;
  position: relative;
  padding-left: 46px;
  font-size: var(--fs-16);
  line-height: 1.75;
  color: var(--ice);
}

.page-about .about-data__flow li::before {
  content: counter(flow, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0.28em;
  width: 32px;
  padding: 2px 0;
  text-align: center;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  color: var(--cyan);
  border: 1px solid var(--about-line);
  border-radius: 2px;
}

.page-about .about-data__aside {
  display: grid;
  gap: 20px;
}

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

.page-about .about-sources {
  padding: 18px 18px 14px;
  background: var(--glow), var(--night);
  border: 1px solid var(--edge);
  border-radius: 2px;
}

.page-about .about-sources__cap {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.22em;
  color: var(--mist);
}

.page-about .about-sources__svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-about .about-sources__lines line {
  stroke: var(--cyan);
  stroke-width: 1;
  opacity: 0.22;
}

.page-about .about-sources__dots rect {
  fill: var(--cyan);
  opacity: 0.62;
}

.page-about .about-sources__core {
  fill: var(--orange);
  opacity: 0.9;
}

.page-about .about-sources__note {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.12em;
  color: var(--cyan);
}

/* ---------- 团队构成 ---------- */
.page-about .about-team {
  background: linear-gradient(115deg, rgba(53, 230, 208, 0.10), rgba(255, 122, 47, 0.06));
  border-top: 1px solid var(--edge);
  border-bottom: 1px solid var(--edge);
}

.page-about .about-team__title {
  margin: 12px 0 16px;
  font-size: clamp(24px, 3.4vw, 38px);
  line-height: 1.26;
  font-weight: 800;
  color: var(--ice);
}

.page-about .about-team__head .prose {
  margin: 0;
}

.page-about .about-team__bar {
  margin: clamp(24px, 4vw, 38px) 0 0;
  display: flex;
  gap: 8px;
}

.page-about .about-team__seg {
  position: relative;
  flex: var(--w, 1) 1 0%;
  min-width: 0;
  padding: 18px 12px 16px;
  background: var(--night);
  border: 1px solid var(--edge);
  border-radius: 2px;
  transition: border-color 200ms var(--ease), transform 200ms var(--ease);
}

.page-about .about-team__seg::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 3px;
  background: var(--seg, var(--cyan));
}

.page-about .about-team__seg--edit {
  --w: 9;
  --seg: var(--cyan);
  flex-grow: 9;
}

.page-about .about-team__seg--prod {
  --w: 5;
  --seg: var(--orange);
  flex-grow: 5;
}

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

.page-about .about-team__seg:focus {
  outline: 2px solid var(--seg);
  outline-offset: 2px;
}

.page-about .about-team__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(26px, 4.6vw, 42px);
  font-weight: 600;
  line-height: 1;
  color: var(--seg);
  letter-spacing: 0.02em;
}

.page-about .about-team__role {
  display: block;
  margin-top: 8px;
  font-size: var(--fs-14);
  letter-spacing: 0.1em;
  color: var(--ice);
}

.page-about .about-team__tip {
  display: block;
  margin-top: 10px;
  font-size: var(--fs-12);
  line-height: 1.7;
  color: var(--mist);
}

.page-about .about-team__duties {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .about-team__duties li {
  padding-left: 16px;
  border-left: 2px solid var(--about-line);
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--mist);
}

.page-about .about-team__duties strong {
  color: var(--ice);
  font-weight: 700;
}

/* ---------- 内容体系 ---------- */
.page-about .about-content__title {
  margin: 12px 0 14px;
  font-size: clamp(24px, 3.4vw, 38px);
  line-height: 1.26;
  font-weight: 800;
  color: var(--ice);
  max-width: 22em;
}

.page-about .about-content__lede {
  margin: 0;
  font-size: var(--fs-16);
  line-height: 1.85;
  color: var(--mist);
  max-width: 34rem;
}

.page-about .about-content__banner {
  margin: clamp(22px, 3.5vw, 36px) 0 0;
}

.page-about .about-content__list {
  list-style: none;
  margin: clamp(22px, 3.5vw, 36px) 0 0;
  padding: 0;
}

.page-about .about-content__item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 8px;
  padding: 24px 0;
  border-top: 1px solid var(--edge);
}

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

.page-about .about-content__idx {
  font-family: var(--font-mono);
  font-size: var(--fs-14);
  letter-spacing: 0.16em;
  color: var(--orange);
}

.page-about .about-content__body h3 {
  margin: 0 0 8px;
  font-size: var(--fs-18);
  font-weight: 800;
  letter-spacing: 0.04em;
  color: var(--ice);
}

.page-about .about-content__body p {
  margin: 0;
  font-size: var(--fs-16);
  line-height: 1.85;
  color: var(--mist);
  max-width: 34rem;
}

/* ---------- 版本演进 ---------- */
.page-about .about-timeline {
  position: relative;
  overflow: hidden;
  border-top: 1px solid var(--edge);
}

.page-about .about-timeline__bg {
  position: absolute;
  inset: 0;
  opacity: 0.14;
  pointer-events: none;
}

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

.page-about .about-timeline .wrap {
  position: relative;
  z-index: 1;
}

.page-about .about-timeline__title {
  margin: 12px 0 14px;
  font-size: clamp(24px, 3.4vw, 38px);
  line-height: 1.26;
  font-weight: 800;
  color: var(--ice);
}

.page-about .about-timeline__lede {
  margin: 0;
  font-size: var(--fs-16);
  line-height: 1.85;
  color: var(--mist);
  max-width: 34rem;
}

.page-about .about-timeline__list {
  list-style: none;
  position: relative;
  margin: clamp(26px, 4vw, 44px) 0 0;
  padding: 0 0 0 28px;
  display: grid;
  gap: 30px;
}

.page-about .about-timeline__list::before {
  content: "";
  position: absolute;
  left: 12px;
  top: 4px;
  bottom: 4px;
  width: 2px;
  background: linear-gradient(180deg, var(--cyan) 0%, rgba(255, 122, 47, 0.85) 55%, rgba(53, 230, 208, 0.08) 100%);
}

.page-about .about-timeline__item {
  position: relative;
  padding-bottom: 4px;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: -21px;
  top: 6px;
  width: 12px;
  height: 12px;
  background: var(--deep);
  border: 2px solid var(--cyan);
  transform: rotate(45deg);
}

.page-about .about-timeline__ver {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: var(--fs-14);
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-about .about-timeline__body h3 {
  margin: 0 0 8px;
  font-size: var(--fs-18);
  font-weight: 800;
  letter-spacing: 0.04em;
  color: var(--ice);
}

.page-about .about-timeline__body p {
  margin: 0;
  font-size: var(--fs-16);
  line-height: 1.85;
  color: var(--mist);
  max-width: 32rem;
}

.page-about .about-timeline__meta {
  margin-top: 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* ---------- 服务范围 ---------- */
.page-about .about-service__narrow {
  max-width: 34rem;
  border-left: 2px solid var(--about-line);
  padding-left: 20px;
}

.page-about .about-service__title {
  margin: 12px 0 16px;
  font-size: clamp(24px, 3.4vw, 38px);
  line-height: 1.26;
  font-weight: 800;
  color: var(--ice);
}

.page-about .about-service__narrow p {
  margin: 0 0 16px;
  font-size: var(--fs-16);
  line-height: 1.9;
  color: var(--mist);
}

.page-about .about-service__cta {
  margin-top: 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 720px) {
  .page-about .about-team__seg {
    padding: 22px 18px 18px;
  }

  .page-about .about-team__duties {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }

  .page-about .about-content__item {
    grid-template-columns: 88px minmax(0, 1fr);
    gap: 24px;
    align-items: start;
  }

  .page-about .about-timeline__item {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 190px);
    gap: 24px;
    align-items: start;
  }

  .page-about .about-timeline__meta {
    margin-top: 2px;
    justify-content: flex-end;
  }
}

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

  .page-about .about-hero__aside {
    padding: 6px 0 6px 24px;
    border-top: 0;
    border-left: 1px solid var(--edge);
  }

  .page-about .about-hero__title-em {
    padding-left: 0.9em;
  }

  .page-about .about-data__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }

  .page-about .about-origin__mark {
    display: block;
    position: absolute;
    left: -6px;
    top: 4px;
  }

  .page-about .about-origin__body {
    padding-left: 96px;
  }
}

@media (min-width: 1080px) {
  .page-about .about-team__bar {
    gap: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-team__seg,
  .page-about .about-team__tip {
    transition: none;
  }

  .page-about .about-team__seg:hover,
  .page-about .about-team__seg:focus-within {
    transform: none;
  }
}
<<<END>>>