.page-about {
  --about-axis-line: rgba(111, 183, 206, .42);
  --about-text: rgba(242, 240, 234, .78);
  --about-text-dim: rgba(242, 240, 234, .62);
  color: var(--cream);
  background: var(--rock);
}

/* 面包屑 */
.page-about .breadcrumbs {
  padding-top: 26px;
}
.page-about .breadcrumbs a {
  color: var(--lake-light);
}
.page-about .breadcrumbs a::after {
  content: "/";
  margin: 0 10px;
  color: var(--gray);
}
.page-about .breadcrumbs span[aria-current] {
  color: var(--gray);
}

/* 首屏 */
.page-about .about-hero {
  position: relative;
  padding: 52px 0 74px;
  overflow: hidden;
  background:
    radial-gradient(112% 82% at 90% 0%, rgba(14, 74, 99, .62), rgba(14, 74, 99, 0) 62%),
    linear-gradient(180deg, #1F262C 0%, var(--rock) 76%);
  border-bottom: 1px solid var(--line);
}
.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: .55;
  background-image: repeating-linear-gradient(180deg, rgba(242, 240, 234, .032) 0 1px, rgba(242, 240, 234, 0) 1px 5px);
}
.page-about .about-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 40px;
}
.page-about .about-hero h1 {
  margin: 16px 0 22px;
  font-size: clamp(32px, 6.4vw, 62px);
  font-weight: 900;
  line-height: 1.06;
  letter-spacing: -0.02em;
}
.page-about .about-hero__text {
  max-width: 62ch;
  margin: 0 0 30px;
  font-size: 17px;
  line-height: 1.78;
  color: rgba(242, 240, 234, .82);
}
.page-about .about-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.page-about .about-hero__facts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 2px;
  overflow: hidden;
}
.page-about .about-fact {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding: 18px 20px;
  background: rgba(28, 34, 39, .86);
}
.page-about .about-fact__num {
  flex: 0 0 auto;
  font-family: var(--font-num);
  font-size: clamp(28px, 4.4vw, 38px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--neon);
  font-variant-numeric: tabular-nums;
}
.page-about .about-fact__unit {
  margin-left: 2px;
  font-size: .5em;
}
.page-about .about-fact__label {
  font-size: 13px;
  line-height: 1.62;
  color: var(--about-text-dim);
}

/* 交错正文带 */
.page-about .about-band {
  border-top: 1px solid var(--line);
}
.page-about .about-band__grid {
  display: grid;
  gap: 30px;
}
.page-about .about-band__aside .v-note {
  display: inline-block;
  margin-bottom: 14px;
  color: var(--neon);
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: .1em;
}
.page-about .about-band__title {
  margin: 0;
  font-size: clamp(26px, 4.3vw, 46px);
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: -0.02em;
}
.page-about .about-band__body p {
  max-width: 68ch;
  margin: 0 0 22px;
  font-size: 16.5px;
  line-height: 1.8;
  color: var(--about-text);
}
.page-about .about-band__body p:last-child {
  margin-bottom: 0;
}

/* 图片 */
.page-about .about-figure {
  margin: 30px 0;
}
.page-about .about-figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: 2px;
  object-fit: cover;
}
.page-about .about-figure .media-frame__caption {
  margin-top: 10px;
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--gray);
}

/* 数据链路 */
.page-about .about-chain {
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-about .about-chain__item {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 18px;
  padding: 22px 0;
  border-top: 1px solid var(--line);
}
.page-about .about-chain__item:last-child {
  border-bottom: 1px solid var(--line);
}
.page-about .about-chain__num {
  padding-top: 5px;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--neon);
}
.page-about .about-chain__title {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--cream);
}
.page-about .about-chain__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(242, 240, 234, .7);
}

/* 规模数据 */
.page-about .about-scale {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 2px;
  overflow: hidden;
}
.page-about .about-scale__item {
  padding: 22px 18px;
  background: var(--rock);
}
.page-about .about-scale__num {
  display: block;
  font-family: var(--font-num);
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--neon);
  font-variant-numeric: tabular-nums;
}
.page-about .about-scale__unit {
  margin-left: 3px;
  font-size: 13px;
}
.page-about .about-scale__label {
  display: block;
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.62;
  color: var(--about-text-dim);
}

/* 版本时间轴 */
.page-about .about-axis {
  position: relative;
  padding-left: 30px;
}
.page-about .about-axis::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: linear-gradient(180deg, var(--about-axis-line) 0%, rgba(111, 183, 206, .08) 100%);
}
.page-about .about-axis__item {
  position: relative;
  padding-bottom: 34px;
}
.page-about .about-axis__item:last-child {
  padding-bottom: 0;
}
.page-about .about-axis__item::before {
  content: "";
  position: absolute;
  left: -30px;
  top: 9px;
  width: 11px;
  height: 2px;
  background: var(--neon);
}
.page-about .about-axis__ver {
  display: inline-block;
  margin-bottom: 12px;
  padding: 3px 9px;
  border-radius: 2px;
  background: var(--neon);
  color: var(--rock);
  font-family: var(--font-num);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .12em;
}
.page-about .about-axis__cap {
  margin: 0 0 8px;
  font-size: 19px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--cream);
}
.page-about .about-axis__item p {
  max-width: 60ch;
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(242, 240, 234, .7);
}

/* 全宽岩灰色带 */
.page-about .about-strip {
  padding: 62px 0;
  background: linear-gradient(180deg, #262E34 0%, #1F262B 100%);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.page-about .about-strip__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 26px;
}
.page-about .about-strip__item {
  padding-left: 18px;
  border-left: 2px solid var(--neon);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.62;
  letter-spacing: -0.01em;
  color: var(--cream);
}

/* 团队 */
.page-about .about-team__head {
  max-width: 760px;
  margin-bottom: 38px;
}
.page-about .about-team__head .v-note {
  display: inline-block;
  margin-bottom: 14px;
  color: var(--neon);
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: .1em;
}
.page-about .about-team__intro {
  margin: 16px 0 0;
  font-size: 16.5px;
  line-height: 1.8;
  color: rgba(242, 240, 234, .74);
}
.page-about .about-team__grid {
  display: grid;
  gap: 34px;
}
.page-about .about-team__grid .about-figure {
  margin: 0;
}
.page-about .about-roles .tab-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 22px;
}
.page-about .about-roles .tab {
  padding: 9px 16px;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: transparent;
  color: rgba(242, 240, 234, .66);
  font-family: inherit;
  font-size: 13.5px;
  font-weight: 700;
  letter-spacing: .02em;
  cursor: pointer;
  transition: background 180ms var(--ease), color 180ms var(--ease), border-color 180ms var(--ease);
}
.page-about .about-roles .tab:hover {
  border-color: var(--line-strong);
  color: var(--cream);
}
.page-about .about-roles .tab[aria-selected="true"] {
  background: var(--neon);
  border-color: var(--neon);
  color: var(--rock);
}
.page-about .about-roles .tab-panel p {
  margin: 0 0 16px;
  font-size: 15.5px;
  line-height: 1.8;
  color: rgba(242, 240, 234, .76);
}
.page-about .about-roles .tab-panel p:last-child {
  margin-bottom: 0;
}

/* 合作与认可 */
.page-about .about-partners {
  list-style: none;
  margin: 0 0 26px;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 2px;
  overflow: hidden;
}
.page-about .about-partners li {
  padding: 20px 18px;
  background: var(--rock);
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--about-text-dim);
}
.page-about .about-partners .num {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-num);
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--neon);
  font-variant-numeric: tabular-nums;
}

/* 结尾入口 */
.page-about .about-cta {
  border-top: 1px solid var(--line);
}
.page-about .about-cta h2 {
  margin: 0 0 26px;
  font-size: clamp(24px, 3.6vw, 36px);
  font-weight: 900;
  letter-spacing: -0.02em;
}
.page-about .about-cta__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 2px;
  overflow: hidden;
}
.page-about .about-cta__list a {
  display: block;
  padding: 20px 22px;
  background: var(--rock);
  color: var(--cream);
  text-decoration: none;
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.6;
  transition: background 200ms var(--ease), color 200ms var(--ease);
}
.page-about .about-cta__list a:hover,
.page-about .about-cta__list a:focus-visible {
  background: var(--rock-mid);
  color: var(--neon);
}
.page-about .about-cta__list span {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  font-weight: 400;
  color: rgba(242, 240, 234, .58);
}

/* 桌面布局 */
@media (min-width: 720px) {
  .page-about .about-scale {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-about .about-partners {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-about .about-cta__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 880px) {
  .page-about .about-strip__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 56px;
  }
}

@media (min-width: 960px) {
  .page-about .about-hero {
    padding: 66px 0 92px;
  }
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, .9fr);
    gap: 64px;
    align-items: end;
  }
  .page-about .about-band__grid {
    grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr);
    gap: 80px;
    align-items: start;
  }
  .page-about .about-band--flip .about-band__grid {
    grid-template-columns: minmax(0, 1.18fr) minmax(0, .82fr);
  }
  .page-about .about-band--flip .about-band__aside {
    grid-column: 2;
    grid-row: 1;
  }
  .page-about .about-band--flip .about-band__body {
    grid-column: 1;
    grid-row: 1;
  }
  .page-about .about-band__aside {
    position: sticky;
    top: calc(var(--header-h) + 40px);
  }
  .page-about .about-team__grid {
    grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr);
    gap: 56px;
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-roles .tab,
  .page-about .about-cta__list a {
    transition: none;
  }
  .page-about .about-hero::after {
    opacity: .3;
  }
}
<<<END>>>