.page-about {
  --about-line: rgba(230, 237, 247, .12);
  --about-card: linear-gradient(180deg, rgba(26, 34, 56, .9), rgba(11, 18, 36, .88));
  background: var(--void);
  color: var(--mist);
  overflow-x: clip;
}

.page-about .about-crumb {
  padding: 22px 0 0;
}

.page-about .about-crumb .breadcrumb {
  font-size: 13px;
  color: var(--slate);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  isolation: isolate;
  padding: 34px 0 0;
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -34%;
  right: -28%;
  width: min(880px, 108vw);
  aspect-ratio: 1;
  background:
    radial-gradient(circle at 62% 38%, rgba(22, 224, 196, .3), transparent 58%),
    radial-gradient(circle at 32% 72%, rgba(44, 107, 255, .26), transparent 62%),
    radial-gradient(circle at 86% 82%, rgba(255, 196, 107, .12), transparent 60%);
  filter: blur(6px);
  z-index: -1;
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: 62%;
  height: 58%;
  background: linear-gradient(140deg, rgba(22, 224, 196, .16), rgba(44, 107, 255, .1) 55%, transparent 80%);
  clip-path: polygon(24% 0, 100% 0, 100% 100%, 0 100%);
  z-index: -1;
  pointer-events: none;
}

.page-about .about-hero__inner {
  position: relative;
}

.page-about .about-kicker {
  display: inline-block;
  margin: 0;
  padding: 6px 13px;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--gold);
  border: 1px solid rgba(255, 196, 107, .34);
  border-radius: 999px;
  background: rgba(255, 196, 107, .08);
}

.page-about .about-hero__title {
  margin: 18px 0 0;
  max-width: 15ch;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 7.6vw, 66px);
  line-height: 1.14;
  letter-spacing: -.02em;
  color: var(--mist);
}

.page-about .about-hero__mark {
  display: inline-block;
  background: var(--grad-aurora);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.page-about .about-hero__lead {
  margin: 22px 0 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(230, 237, 247, .78);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 42px 0 0;
  padding: 0;
  background: var(--about-line);
  border: 1px solid var(--about-line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .about-stats > div {
  padding: 18px 16px;
  background: linear-gradient(180deg, rgba(26, 34, 56, .74), rgba(7, 11, 24, .9));
}

.page-about .about-stats dt {
  font-size: 12px;
  letter-spacing: .07em;
  color: var(--slate);
}

.page-about .about-stats dd {
  margin: 8px 0 0;
  font-size: clamp(24px, 6vw, 34px);
  font-weight: 700;
  line-height: 1;
  color: var(--mist);
  letter-spacing: -.02em;
}

.page-about .about-stats__unit {
  margin-left: 3px;
  font-size: 13px;
  color: var(--teal);
  letter-spacing: 0;
}

/* ---------- 章节骨架 ---------- */
.page-about .about-sec {
  padding: clamp(54px, 9vw, 100px) 0 0;
}

.page-about .about-head {
  display: grid;
  gap: 12px;
  margin-bottom: 30px;
}

.page-about .about-head .section-no {
  font-family: var(--font-mono);
  font-size: clamp(38px, 9vw, 72px);
  font-weight: 800;
  line-height: .88;
  letter-spacing: -.05em;
  background: var(--grad-aurora);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  opacity: .9;
}

.page-about .about-head .h2 {
  margin: 0;
  max-width: 22ch;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(23px, 5.2vw, 38px);
  line-height: 1.24;
  letter-spacing: -.02em;
  color: var(--mist);
}

.page-about .about-head__lead {
  margin: 0;
  max-width: 60ch;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--slate);
}

/* ---------- 01 起点 ---------- */
.page-about .about-cols {
  display: grid;
  gap: 24px;
}

.page-about .about-cols__main p {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(230, 237, 247, .84);
}

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

.page-about .about-cols__side {
  padding: 22px 20px;
  border: 1px solid var(--about-line);
  border-radius: var(--radius);
  background: rgba(26, 34, 56, .55);
  backdrop-filter: blur(10px);
}

.page-about .about-side__label {
  margin: 0 0 14px;
  font-size: 11.5px;
  letter-spacing: .12em;
  color: var(--gold);
}

.page-about .about-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 13px;
}

.page-about .about-list li {
  position: relative;
  padding-left: 18px;
  font-size: 13.5px;
  line-height: 1.75;
  color: rgba(230, 237, 247, .78);
}

.page-about .about-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: var(--grad-aurora);
}

/* ---------- 02 版本时间轴 ---------- */
.page-about .about-fig {
  margin: 0 0 32px;
}

.page-about .about-fig img,
.page-about .about-net__fig img,
.page-about .about-team__fig img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--about-line);
  border-radius: var(--radius);
  background: var(--void-2);
  object-fit: cover;
}

.page-about .about-fig img {
  aspect-ratio: 16 / 9;
}

.page-about .media__caption {
  display: block;
  margin-top: 10px;
  font-size: 11.5px;
  letter-spacing: .08em;
  color: var(--slate);
}

.page-about .about-arc {
  display: grid;
  gap: 24px;
}

.page-about .about-arc__rail {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 2px 0 10px;
}

.page-about .about-arc__tick {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  padding: 8px 14px;
  border: 1px solid var(--about-line);
  border-radius: 999px;
  background: rgba(26, 34, 56, .6);
  text-decoration: none;
  transition: transform .3s var(--ease), border-color .3s var(--ease), background .3s var(--ease);
}

.page-about .about-arc__tick .mono {
  font-size: 13px;
  color: var(--teal);
}

.page-about .about-arc__tickname {
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--slate);
}

.page-about .about-arc__tick:hover,
.page-about .about-arc__tick:focus-visible {
  transform: translateY(-2px);
  border-color: rgba(56, 245, 255, .55);
  background: rgba(56, 245, 255, .1);
}

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

.page-about .arc-item {
  position: relative;
  display: grid;
  gap: 16px;
  padding: 24px 20px 24px 24px;
  border: 1px solid var(--about-line);
  border-radius: var(--radius);
  background: var(--about-card);
  scroll-margin-top: 96px;
  transition: transform .32s var(--ease), border-color .32s var(--ease), box-shadow .32s var(--ease);
}

.page-about .arc-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 20px;
  bottom: 20px;
  width: 3px;
  border-radius: 0 3px 3px 0;
  background: var(--grad-aurora);
  transition: width .32s var(--ease);
}

.page-about .arc-item:hover {
  transform: translateY(-4px);
  border-color: var(--line-strong);
  box-shadow: 0 18px 40px rgba(7, 11, 24, .55);
}

.page-about .arc-item:hover::before {
  width: 6px;
}

.page-about .arc-item:target {
  border-color: rgba(56, 245, 255, .55);
  box-shadow: 0 0 0 2px rgba(56, 245, 255, .2);
}

.page-about .arc-item__top {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.page-about .arc-item__no {
  font-family: var(--font-mono);
  font-size: 38px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.04em;
  background: var(--grad-aurora);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.page-about .arc-item__year {
  font-size: 12.5px;
  letter-spacing: .1em;
  color: var(--slate);
}

.page-about .arc-item__body h3 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  line-height: 1.45;
  color: var(--mist);
}

.page-about .arc-item__body p {
  margin: 0 0 14px;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(230, 237, 247, .72);
}

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

.page-about .arc-item__tags .tag {
  font-size: 11.5px;
}

.page-about .arc-item__sig {
  display: none;
}

/* ---------- 03 服务网络 ---------- */
.page-about .about-net {
  display: grid;
  gap: 28px;
}

.page-about .about-net__intro {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(230, 237, 247, .82);
}

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

.page-about .net-point {
  padding: 16px 18px;
  border: 1px solid var(--about-line);
  border-radius: 14px;
  background: rgba(26, 34, 56, .48);
  transition: border-color .3s var(--ease), background .3s var(--ease), transform .3s var(--ease);
}

.page-about .net-point:hover,
.page-about .net-point:focus-within,
.page-about .net-point:focus-visible {
  transform: translateY(-2px);
  border-color: rgba(22, 224, 196, .45);
  background: rgba(22, 224, 196, .07);
}

.page-about .net-point__city {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--mist);
}

.page-about .net-point__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--grad-aurora);
  box-shadow: 0 0 10px rgba(56, 245, 255, .7);
}

.page-about .net-point__desc {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--slate);
}

.page-about .net-point__time {
  display: block;
  margin-top: 8px;
  font-size: 11.5px;
  letter-spacing: .07em;
  color: var(--gold);
}

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

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

/* ---------- 04 团队 ---------- */
.page-about .about-team {
  display: grid;
  gap: 24px;
}

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

.page-about .team-block {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 16px 18px;
  background: linear-gradient(180deg, rgba(26, 34, 56, .78), rgba(7, 11, 24, .9));
}

.page-about .team-block__num {
  font-size: clamp(26px, 6vw, 34px);
  font-weight: 700;
  line-height: 1;
  color: var(--teal);
  letter-spacing: -.03em;
}

.page-about .team-block--gold .team-block__num {
  color: var(--gold);
}

.page-about .team-block--blue .team-block__num {
  color: var(--cyan);
}

.page-about .team-block__label {
  font-size: 13px;
  color: var(--slate);
}

.page-about .about-team__body p {
  margin: 0 0 14px;
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(230, 237, 247, .82);
}

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

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

.page-about .about-team__fig img {
  aspect-ratio: 4 / 3;
}

/* ---------- 05 节奏 ---------- */
.page-about .about-rhythm {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1px;
  background: var(--about-line);
  border: 1px solid var(--about-line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .about-rhythm li {
  display: grid;
  gap: 8px;
  align-content: start;
  padding: 22px 20px 26px;
  background: linear-gradient(180deg, rgba(26, 34, 56, .8), rgba(7, 11, 24, .92));
  transition: background .3s var(--ease);
}

.page-about .about-rhythm li:hover {
  background: linear-gradient(180deg, rgba(22, 224, 196, .1), rgba(7, 11, 24, .92));
}

.page-about .rhythm__when {
  font-size: 11.5px;
  letter-spacing: .12em;
  color: var(--gold);
}

.page-about .rhythm__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 16.5px;
  font-weight: 700;
  color: var(--mist);
}

.page-about .rhythm__text {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.78;
  color: var(--slate);
}

/* ---------- 06 合作与认可 ---------- */
.page-about .about-partners {
  display: grid;
  gap: 18px;
}

.page-about .partner-card {
  position: relative;
  overflow: hidden;
  padding: 26px 22px;
  border: 1px solid var(--about-line);
  border-radius: var(--radius);
}

.page-about .partner-card--aurora {
  background:
    radial-gradient(circle at 92% 6%, rgba(22, 224, 196, .22), transparent 58%),
    linear-gradient(150deg, rgba(26, 34, 56, .92), rgba(11, 18, 36, .94));
}

.page-about .partner-card--gold {
  background:
    radial-gradient(circle at 8% 96%, rgba(255, 196, 107, .18), transparent 60%),
    linear-gradient(150deg, rgba(26, 34, 56, .92), rgba(11, 18, 36, .94));
}

.page-about .partner-card__num {
  display: block;
  margin: 0;
  font-size: clamp(44px, 12vw, 66px);
  font-weight: 700;
  line-height: .9;
  letter-spacing: -.05em;
  background: var(--grad-aurora);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.page-about .partner-card__label {
  display: inline-block;
  margin: 0 0 10px;
  padding: 5px 11px;
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--gold);
  border: 1px solid rgba(255, 196, 107, .34);
  border-radius: 999px;
  background: rgba(255, 196, 107, .09);
}

.page-about .partner-card__title {
  margin: 12px 0 10px;
  font-family: var(--font-display);
  font-size: clamp(17px, 4vw, 21px);
  font-weight: 700;
  line-height: 1.42;
  color: var(--mist);
}

.page-about .partner-card__text {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--slate);
}

/* ---------- 结尾 ---------- */
.page-about .about-cta {
  padding: clamp(52px, 9vw, 96px) 0 clamp(48px, 8vw, 84px);
}

.page-about .about-cta__inner {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 5.5vw, 50px);
  border: 1px solid rgba(56, 245, 255, .22);
  border-radius: calc(var(--radius) + 6px);
  background:
    radial-gradient(circle at 88% 12%, rgba(22, 224, 196, .22), transparent 56%),
    radial-gradient(circle at 12% 92%, rgba(255, 196, 107, .12), transparent 58%),
    linear-gradient(135deg, rgba(26, 34, 56, .94), rgba(11, 18, 36, .96));
}

.page-about .about-cta__inner .h2 {
  margin: 0;
  max-width: 20ch;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(22px, 5vw, 34px);
  line-height: 1.26;
  letter-spacing: -.02em;
  color: var(--mist);
}

.page-about .about-cta__text {
  margin: 16px 0 0;
  max-width: 58ch;
  font-size: 14px;
  line-height: 1.85;
  color: rgba(230, 237, 247, .74);
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .about-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

@media (min-width: 760px) {
  .page-about .about-hero__lead {
    font-size: 17px;
  }

  .page-about .arc-item {
    grid-template-columns: 92px minmax(0, 1fr) 130px;
    align-items: start;
    gap: 24px;
    padding: 28px 26px 28px 30px;
  }

  .page-about .arc-item__top {
    flex-direction: column;
    gap: 6px;
  }

  .page-about .arc-item__no {
    font-size: 46px;
  }

  .page-about .arc-item__body {
    grid-column: 2;
  }

  .page-about .arc-item__sig {
    display: block;
    width: 130px;
    height: auto;
    grid-column: 3;
  }
}

@media (min-width: 900px) {
  .page-about .about-stats {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    margin-top: 52px;
  }

  .page-about .about-stats > div {
    padding: 22px 20px;
  }

  .page-about .about-head {
    grid-template-columns: 104px minmax(0, 1fr);
    column-gap: 30px;
    align-items: start;
    margin-bottom: 40px;
  }

  .page-about .about-head .section-no {
    grid-row: span 2;
    font-size: clamp(52px, 6vw, 78px);
  }

  .page-about .about-cols {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 44px;
    align-items: start;
  }

  .page-about .about-arc {
    grid-template-columns: 118px minmax(0, 1fr);
    gap: 44px;
    align-items: start;
  }

  .page-about .about-arc__rail {
    position: sticky;
    top: 96px;
    flex-direction: column;
    gap: 6px;
    overflow: visible;
    padding: 4px 0 4px 14px;
    border-left: 1px solid var(--about-line);
  }

  .page-about .about-arc__tick {
    border-color: transparent;
    border-radius: 8px;
    background: transparent;
    padding: 8px 6px;
  }

  .page-about .about-net {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 52px;
    align-items: center;
  }

  .page-about .about-team {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 32px 48px;
    align-items: start;
  }

  .page-about .about-team__stats {
    grid-row: span 2;
  }

  .page-about .about-partners {
    grid-template-columns: 1.12fr .88fr;
    gap: 20px;
  }

  .page-about .partner-card {
    padding: 30px 28px;
  }
}

@media (min-width: 1080px) {
  .page-about .about-rhythm {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-hero__title {
    max-width: 14ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .arc-item,
  .page-about .arc-item::before,
  .page-about .net-point,
  .page-about .about-arc__tick,
  .page-about .about-rhythm li {
    transition: none;
  }

  .page-about .arc-item:hover,
  .page-about .net-point:hover,
  .page-about .about-arc__tick:hover {
    transform: none;
  }
}
<<<END>>>