.page-about {
  --about-gap: clamp(48px, 7vw, 100px);
  position: relative;
  color: var(--cream);
  padding-bottom: clamp(48px, 7vw, 96px);
  overflow-x: clip;
}

.page-about::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 880px;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(680px 420px at 84% 2%, rgba(34, 211, 238, .13), transparent 68%),
    radial-gradient(560px 360px at 4% 24%, rgba(242, 193, 78, .08), transparent 70%);
}

.page-about > * {
  position: relative;
  z-index: 1;
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  display: grid;
  gap: clamp(26px, 4vw, 44px);
  padding-block: clamp(20px, 4vw, 40px) clamp(40px, 6vw, 76px);
}

.page-about .about-hero__kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 16px;
  padding: 6px 14px;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-pill);
  background: var(--glass-soft);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--mist);
}

.page-about .about-hero__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(34, 211, 238, .18);
}

.page-about .about-hero__title {
  margin: 0 0 18px;
  font-family: var(--font-cond);
  font-size: clamp(32px, 7.4vw, 60px);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -.01em;
  color: var(--cream);
}

.page-about .about-hero__lede {
  margin: 0 0 26px;
  max-width: 40ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.78;
  color: var(--mist);
}

.page-about .about-hero__marks {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-hero__mark {
  display: flex;
  align-items: baseline;
  gap: 6px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  background: rgba(16, 42, 67, .55);
  font-size: 12px;
  color: var(--mist);
}

.page-about .about-hero__mark .num {
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 700;
  color: var(--gold);
}

.page-about .about-hero__figure {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
  background: var(--ink-800);
  box-shadow: var(--shadow);
}

/* ---------- 通用区块 ---------- */

.page-about .about-block {
  padding-block: var(--about-gap);
  border-top: 1px solid var(--line);
}

.page-about .about-head {
  display: grid;
  gap: 10px;
  max-width: 62ch;
  margin-bottom: clamp(22px, 3vw, 38px);
}

.page-about .about-head__title {
  margin: 0;
  font-family: var(--font-cond);
  font-size: clamp(23px, 3.6vw, 36px);
  font-weight: 700;
  line-height: 1.2;
  color: var(--cream);
}

.page-about .about-head__lede {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
}

.page-about .about-split {
  display: grid;
  gap: clamp(22px, 3vw, 40px);
}

.page-about .about-prose p {
  margin: 0 0 18px;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--mist);
}

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

/* ---------- 四条内容线侧栏 ---------- */

.page-about .about-aside {
  padding: 22px;
  border-radius: var(--r-md);
}

.page-about .about-aside__list {
  display: grid;
  gap: 14px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-aside__list li {
  display: grid;
  gap: 3px;
  padding-left: 14px;
  border-left: 2px solid rgba(34, 211, 238, .4);
}

.page-about .about-aside__k {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--cyan);
}

.page-about .about-aside__v {
  font-size: 14px;
  line-height: 1.65;
  color: var(--cream);
}

/* ---------- 服务范围地图 ---------- */

.page-about .about-map {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--glass-soft);
}

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

.page-about .about-map__outline {
  fill: rgba(34, 211, 238, .07);
  stroke: var(--line-strong);
  stroke-width: 1.4;
}

.page-about .about-map__node {
  cursor: default;
  outline: none;
}

.page-about .about-map__node circle {
  fill: var(--cyan);
  transition: fill var(--dur) ease, r var(--dur) ease;
}

.page-about .about-map__node text {
  fill: var(--mist);
  font-family: var(--font-mono);
  font-size: 11px;
  transition: fill var(--dur) ease;
}

.page-about .about-map__node:hover circle,
.page-about .about-map__node:focus-visible circle {
  fill: var(--gold);
  r: 8;
}

.page-about .about-map__node:hover text,
.page-about .about-map__node:focus-visible text {
  fill: var(--cream);
}

.page-about .about-map__note {
  margin: 12px 0 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--stone);
  color: rgba(167, 199, 217, .68);
}

.page-about .about-coverage__figure {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
  background: var(--ink-800);
}

/* ---------- 团队 ---------- */

.page-about .about-team {
  display: grid;
  gap: clamp(26px, 3.5vw, 44px);
}

.page-about .team-bars {
  display: grid;
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .team-bar {
  display: grid;
  gap: 7px;
}

.page-about .team-bar__meta {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  font-size: 13px;
  color: var(--mist);
}

.page-about .team-bar__meta .num {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--cream);
}

.page-about .team-bar__track {
  display: block;
  height: 9px;
  border-radius: var(--r-pill);
  background: rgba(167, 199, 217, .12);
  overflow: hidden;
}

.page-about .team-bar__fill {
  display: block;
  height: 100%;
  width: var(--w, 0%);
  border-radius: inherit;
}

.page-about .team-bar--edit .team-bar__fill {
  background: linear-gradient(90deg, var(--cyan), #159bb5);
}

.page-about .team-bar--data .team-bar__fill {
  background: linear-gradient(90deg, var(--gold), #c99328);
}

.page-about .team-bar--tech .team-bar__fill {
  background: linear-gradient(90deg, var(--clay), #8f4f36);
}

.page-about .team-bar--care .team-bar__fill {
  background: linear-gradient(90deg, var(--moss), #4e6b53);
}

.page-about .about-team__notes {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
}

.page-about .about-team__note {
  padding: 16px 18px;
  background: var(--ink-800);
}

.page-about .about-team__note h3 {
  margin: 0 0 6px;
  font-size: 15px;
  font-weight: 700;
  color: var(--gold);
}

.page-about .about-team__note p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 更新节奏 ---------- */

.page-about .about-rhythm {
  display: grid;
  gap: 14px;
  grid-template-columns: 1fr;
}

.page-about .about-rhythm__card {
  padding: 20px 18px;
  border-radius: var(--r-md);
  border-top: 2px solid var(--cyan);
}

.page-about .about-rhythm__card:nth-child(2) {
  border-top-color: var(--gold);
}

.page-about .about-rhythm__card:nth-child(3) {
  border-top-color: var(--coral);
}

.page-about .about-rhythm__card:nth-child(4) {
  border-top-color: var(--moss);
}

.page-about .about-rhythm__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(26px, 3.4vw, 34px);
  font-weight: 700;
  line-height: 1;
  color: var(--cream);
}

.page-about .about-rhythm__card h3 {
  margin: 10px 0 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--cyan);
}

.page-about .about-rhythm__card p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.68;
  color: var(--mist);
}

/* ---------- 版本演进 ---------- */

.page-about .timeline {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0 0 0 22px;
  list-style: none;
  border-left: 1px solid var(--line-strong);
}

.page-about .timeline__item {
  position: relative;
  padding-bottom: 26px;
}

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

.page-about .timeline__item::before {
  content: "";
  position: absolute;
  left: -27px;
  top: 5px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--ink-900);
  border: 2px solid var(--cyan);
}

.page-about .timeline__item:last-child::before {
  border-color: var(--gold);
  background: var(--gold);
}

.page-about .timeline__stage {
  margin: 0 0 4px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .14em;
  color: var(--cyan);
}

.page-about .timeline__title {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 700;
  color: var(--cream);
}

.page-about .timeline__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

.page-about .about-split--rev .figure-frame {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
  background: var(--ink-800);
}

/* ---------- 合作生态 ---------- */

.page-about .about-partners {
  display: grid;
  gap: 12px;
  grid-template-columns: 1fr;
  margin-bottom: clamp(24px, 3.5vw, 40px);
}

.page-about .about-partners__stat {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: rgba(16, 42, 67, .5);
}

.page-about .about-partners__stat .num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(28px, 4vw, 38px);
  font-weight: 700;
  line-height: 1;
  color: var(--gold);
}

.page-about .about-partners__stat p {
  margin: 8px 0 0;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--mist);
}

/* ---------- 结尾 CTA ---------- */

.page-about .about-cta {
  display: grid;
  gap: 20px;
  padding: clamp(22px, 3vw, 34px);
  border-radius: var(--r-md);
  background: linear-gradient(120deg, rgba(34, 211, 238, .12), rgba(242, 193, 78, .1) 60%, rgba(16, 42, 67, .9));
  border: 1px solid var(--line-strong);
}

.page-about .about-cta__title {
  margin: 0 0 8px;
  font-family: var(--font-cond);
  font-size: clamp(20px, 2.8vw, 28px);
  font-weight: 700;
  line-height: 1.25;
  color: var(--cream);
}

.page-about .about-cta__text p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 图片统一处理 ---------- */

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

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

/* ---------- 响应式 ---------- */

@media (min-width: 700px) {
  .page-about .about-rhythm {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

  .page-about .about-cta {
    grid-template-columns: 1fr auto;
    align-items: center;
  }
}

@media (min-width: 940px) {
  .page-about .about-hero {
    grid-template-columns: 7fr 5fr;
    align-items: start;
  }

  .page-about .about-hero__figure {
    margin-top: 34px;
  }

  .page-about .about-split {
    grid-template-columns: 7fr 5fr;
    align-items: start;
  }

  .page-about .about-split--rev {
    grid-template-columns: 5fr 7fr;
  }

  .page-about .about-split--rev > .timeline {
    order: 2;
  }

  .page-about .about-split--rev > .figure-frame {
    order: 1;
  }

  .page-about .about-team {
    grid-template-columns: 5fr 7fr;
    align-items: start;
  }

  .page-about .about-rhythm {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 1180px) {
  .page-about .about-prose {
    max-width: 62ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-map__node circle,
  .page-about .about-map__node text {
    transition: none;
  }
}
<<<END>>>

.page-about {
  --w: 1rem;
}