.page-about {
  --ab-rail: 78px;
  --ab-tile-bg: linear-gradient(158deg, var(--es-ink) 0%, var(--es-void) 82%);
  display: block;
  background: var(--es-void);
  color: var(--es-text);
}

.page-about .ab-unit {
  font-size: .58em;
  margin-left: .25em;
  color: var(--es-silver);
  font-family: var(--es-sans);
  letter-spacing: .04em;
}

/* ---------- 首屏拼贴 ---------- */

.page-about .ab-hero {
  position: relative;
  padding: clamp(1.25rem, 4vw, 2rem) 0 clamp(2.25rem, 5vw, 3.5rem);
  overflow: hidden;
}

.page-about .ab-hero::before {
  content: "";
  position: absolute;
  top: -38%;
  right: -18%;
  width: min(660px, 92vw);
  height: min(660px, 92vw);
  background: radial-gradient(circle, rgba(124, 77, 255, .3), rgba(11, 11, 20, 0) 64%);
  pointer-events: none;
}

.page-about .ab-hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 1px;
  background: var(--es-line);
}

.page-about .ab-hero .es-shell {
  position: relative;
  z-index: 1;
}

.page-about .ab-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.75rem, 4vw, 3rem);
  margin-top: clamp(1rem, 3vw, 1.75rem);
}

.page-about .ab-hero__title {
  margin: .7rem 0 .95rem;
  font-size: clamp(2rem, 8.4vw, 4.5rem);
  line-height: 1.04;
  letter-spacing: .012em;
  font-weight: 200;
  color: #fff;
}

.page-about .ab-hero__lead .es-lede {
  max-width: 46ch;
}

.page-about .ab-hero__acts {
  display: flex;
  flex-wrap: wrap;
  gap: .65rem;
  margin-top: clamp(1.1rem, 3vw, 1.75rem);
}

.page-about .ab-hero__tiles {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .7rem;
}

.page-about .ab-tile {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: .4rem;
  padding: 1rem 1.05rem 1.15rem;
  background: var(--ab-tile-bg);
  border: 1px solid var(--es-line);
  border-radius: var(--es-radius);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--es-cut)), calc(100% - var(--es-cut)) 100%, 0 100%);
  overflow: hidden;
}

.page-about .ab-tile::after {
  content: "";
  position: absolute;
  right: 0;
  top: 0;
  width: 58px;
  height: 2px;
  background: var(--es-violet);
  opacity: .85;
}

.page-about .ab-tile--wide {
  grid-column: 1 / -1;
}

.page-about .ab-tile__num {
  font-size: clamp(1.55rem, 5.2vw, 2.35rem);
  line-height: 1;
  font-weight: 500;
  color: var(--es-violet-soft);
  letter-spacing: -.01em;
}

.page-about .ab-tile--geo .ab-tile__num,
.page-about .ab-tile__num--small {
  color: var(--es-cyan);
}

.page-about .ab-tile__note {
  font-size: .82rem;
  line-height: 1.5;
  color: var(--es-silver);
}

.page-about .ab-dash {
  margin: 0 .12em;
  color: var(--es-violet);
}

.page-about .ab-geos {
  display: flex;
  flex-wrap: wrap;
  gap: .35rem;
}

/* ---------- 贯穿轴线的章节流 ---------- */

.page-about .ab-stream {
  position: relative;
  padding-top: clamp(1.5rem, 4vw, 2.75rem);
  padding-bottom: clamp(2.5rem, 6vw, 5rem);
}

.page-about .ab-block {
  position: relative;
  padding: clamp(1.75rem, 4.4vw, 3.25rem) 0;
}

.page-about .ab-block + .ab-block::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--es-line) 0%, rgba(185, 163, 255, .04) 70%, rgba(185, 163, 255, 0) 100%);
}

.page-about .ab-block__head {
  max-width: 66ch;
  margin-bottom: clamp(1.2rem, 3.2vw, 2rem);
}

.page-about .ab-block__head .es-heading--rule {
  margin: .35rem 0 .8rem;
}

.page-about .ab-block__head .es-lede {
  margin: 0;
}

/* ---------- 图文错位 ---------- */

.page-about .ab-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.25rem, 3.4vw, 2.5rem);
  align-items: start;
}

.page-about .ab-split__media,
.page-about .ab-team__media,
.page-about .ab-awards__media {
  margin: 0;
}

.page-about .ab-split__media img,
.page-about .ab-team__media img,
.page-about .ab-awards__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 赛区标签页 ---------- */

.page-about .ab-tabs .es-tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
  border-bottom: 1px solid var(--es-line);
  padding-bottom: .6rem;
}

.page-about .ab-panel {
  padding-top: clamp(1.1rem, 3vw, 1.75rem);
}

.page-about .ab-panel__body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(.9rem, 2.4vw, 1.5rem);
  padding: clamp(1.15rem, 3vw, 1.9rem);
  background: var(--es-ink);
  border: 1px solid var(--es-line);
  border-radius: var(--es-radius);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--es-cut)), calc(100% - var(--es-cut)) 100%, 0 100%);
}

.page-about .ab-panel__body .es-heading {
  margin: 0;
  font-size: clamp(1.15rem, 3.4vw, 1.5rem);
}

.page-about .ab-panel__body p {
  margin: 0;
  color: var(--es-silver);
  line-height: 1.75;
}

.page-about .ab-panel__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: .45rem;
}

.page-about .ab-panel__list li {
  position: relative;
  padding-left: 1.15rem;
  font-size: .92rem;
  color: var(--es-text);
}

.page-about .ab-panel__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .58em;
  width: 8px;
  height: 1px;
  background: var(--es-cyan);
}

.page-about .ab-panel__link {
  justify-self: start;
}

/* ---------- 档案规模数据带 ---------- */

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

.page-about .ab-stats__cell {
  display: flex;
  flex-direction: column;
  gap: .35rem;
  padding: clamp(1rem, 3vw, 1.75rem) clamp(.85rem, 2.6vw, 1.5rem);
  background: var(--es-ink);
}

.page-about .ab-stats__cell--accent {
  background: linear-gradient(160deg, rgba(255, 90, 43, .16), var(--es-ink) 72%);
}

.page-about .ab-stats__num {
  font-size: clamp(1.75rem, 6.4vw, 3rem);
  line-height: 1;
  font-weight: 500;
  color: var(--es-cyan);
}

.page-about .ab-stats__cell--accent .ab-stats__num {
  color: var(--es-flare);
}

.page-about .ab-stats__label {
  font-size: .78rem;
  letter-spacing: .06em;
  color: var(--es-silver);
}

/* ---------- 团队 ---------- */

.page-about .ab-team__layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.25rem, 3.4vw, 2.25rem);
  align-items: start;
}

.page-about .ab-team {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: .75rem;
}

.page-about .ab-role {
  position: relative;
  padding: 1rem 1.05rem 1.15rem 1.3rem;
  background: var(--es-ink);
  border: 1px solid var(--es-line);
  border-radius: var(--es-radius);
  transition: transform .35s var(--es-ease), border-color .35s var(--es-ease), background-color .35s var(--es-ease);
}

.page-about .ab-role::before {
  content: "";
  position: absolute;
  left: 0;
  top: .95rem;
  bottom: .95rem;
  width: 2px;
  background: var(--es-violet);
  transform: scaleY(.28);
  transform-origin: top;
  transition: transform .4s var(--es-ease);
}

.page-about .ab-role:hover,
.page-about .ab-role:focus-within {
  transform: translateY(-4px);
  border-color: rgba(185, 163, 255, .4);
  background: var(--es-ink-2);
}

.page-about .ab-role:hover::before,
.page-about .ab-role:focus-within::before {
  transform: scaleY(1);
}

.page-about .ab-role__title {
  margin: 0 0 .3rem;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: .02em;
  color: #fff;
}

.page-about .ab-role__num {
  margin: 0 0 .5rem;
  font-size: 1.5rem;
  line-height: 1;
  font-weight: 500;
  color: var(--es-violet-soft);
}

.page-about .ab-role__desc {
  margin: 0;
  font-size: .85rem;
  line-height: 1.65;
  color: var(--es-silver);
}

/* ---------- 奖项奖章带 ---------- */

.page-about .ab-medals {
  display: flex;
  flex-wrap: wrap;
  gap: .55rem .9rem;
  margin: 0 0 clamp(1.25rem, 3.4vw, 2rem);
  padding: 0;
  list-style: none;
}

.page-about .ab-medal {
  display: flex;
  align-items: center;
  gap: .45rem;
  padding: .4rem .75rem .4rem .5rem;
  border: 1px solid rgba(242, 178, 62, .34);
  border-radius: 999px;
  background: rgba(242, 178, 62, .08);
}

.page-about .ab-medal__icon {
  display: inline-flex;
  color: var(--es-gold);
}

.page-about .ab-medal__year {
  font-size: .8rem;
  letter-spacing: .06em;
  color: var(--es-gold);
}

.page-about .ab-awards {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.25rem, 3.4vw, 2.5rem);
  align-items: center;
}

.page-about .ab-awards__text .es-heading {
  margin: 0 0 .8rem;
  font-size: clamp(1.15rem, 3.4vw, 1.5rem);
}

/* ---------- 里程碑横滚 ---------- */

.page-about .ab-track {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(230px, 270px);
  gap: .8rem;
  overflow-x: auto;
  padding-bottom: 1rem;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
}

.page-about .ab-track::-webkit-scrollbar {
  height: 6px;
}

.page-about .ab-track::-webkit-scrollbar-thumb {
  background: rgba(124, 77, 255, .5);
  border-radius: 999px;
}

.page-about .ab-mile {
  scroll-snap-align: start;
  display: flex;
  flex-direction: column;
  gap: .45rem;
  padding: 1.1rem 1.1rem 1.25rem;
  background: var(--es-ink);
  border: 1px solid var(--es-line);
  border-top: 2px solid var(--es-violet);
  border-radius: 0 0 var(--es-radius) var(--es-radius);
}

.page-about .ab-mile:nth-child(2) {
  border-top-color: var(--es-cyan);
}

.page-about .ab-mile:nth-child(3) {
  border-top-color: var(--es-flare);
}

.page-about .ab-mile:nth-child(4) {
  border-top-color: var(--es-gold);
}

.page-about .ab-mile:nth-child(5) {
  border-top-color: var(--es-violet-soft);
}

.page-about .ab-mile__tag {
  margin: 0;
  font-size: .74rem;
  letter-spacing: .14em;
  color: var(--es-silver);
}

.page-about .ab-mile__title {
  margin: 0;
  font-size: 1.02rem;
  font-weight: 600;
  color: #fff;
}

.page-about .ab-mile__desc {
  margin: 0;
  font-size: .85rem;
  line-height: 1.65;
  color: var(--es-silver);
}

/* ---------- 合作 ---------- */

.page-about .ab-collab {
  padding: clamp(1.5rem, 4vw, 2.75rem);
  border-radius: var(--es-radius);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 24px), calc(100% - 24px) 100%, 0 100%);
}

.page-about .ab-collab .es-eyebrow {
  color: var(--es-brown);
  opacity: .68;
}

.page-about .ab-collab .es-heading {
  margin: .35rem 0 .8rem;
  color: var(--es-brown);
}

.page-about .ab-collab__lede {
  max-width: 62ch;
  margin: 0 0 clamp(1.25rem, 3.4vw, 2rem);
  line-height: 1.75;
  color: rgba(36, 27, 18, .78);
}

.page-about .ab-collab__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: .75rem;
}

.page-about .ab-collab__item {
  display: flex;
  flex-direction: column;
  gap: .45rem;
  padding: 1.15rem 1.2rem 1.25rem;
  border: 1px solid rgba(36, 27, 18, .22);
  border-left: 3px solid var(--es-violet);
  border-radius: 0 var(--es-radius) var(--es-radius) 0;
  text-decoration: none;
  color: inherit;
  transition: background-color .3s var(--es-ease), transform .3s var(--es-ease);
}

.page-about .ab-collab__item:nth-child(2) {
  border-left-color: var(--es-flare);
}

.page-about .ab-collab__item:nth-child(3) {
  border-left-color: var(--es-cyan);
}

.page-about .ab-collab__item:hover,
.page-about .ab-collab__item:focus-visible {
  background: rgba(36, 27, 18, .06);
  transform: translateX(4px);
}

.page-about .ab-collab__title {
  margin: 0;
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--es-brown);
}

.page-about .ab-collab__desc {
  margin: 0;
  font-size: .88rem;
  line-height: 1.68;
  color: rgba(36, 27, 18, .76);
}

.page-about .ab-collab__go {
  margin-top: .2rem;
  font-size: .8rem;
  letter-spacing: .06em;
  font-weight: 600;
  color: #5a3fd0;
}

/* ---------- 断点 ---------- */

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

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

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

  .page-about .ab-panel__body .es-heading,
  .page-about .ab-panel__body p {
    grid-column: 1;
  }

  .page-about .ab-panel__list,
  .page-about .ab-panel__link {
    grid-column: 2;
  }

  .page-about .ab-panel__list {
    grid-row: 1 / span 2;
  }
}

@media (min-width: 900px) {
  .page-about .ab-hero__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    align-items: end;
  }

  .page-about .ab-split {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
  }

  .page-about .ab-split .ab-split__media {
    margin-top: clamp(1rem, 3vw, 2.5rem);
  }

  .page-about .ab-awards {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  }

  .page-about .ab-team__layout {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

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

@media (min-width: 960px) {
  .page-about .ab-stream::before {
    content: "";
    position: absolute;
    left: calc(var(--es-pad) + 5px);
    top: clamp(1.5rem, 4vw, 2.75rem);
    bottom: clamp(2.5rem, 6vw, 5rem);
    width: 1px;
    background: linear-gradient(180deg, rgba(185, 163, 255, 0) 0%, var(--es-line) 8%, var(--es-line) 92%, rgba(185, 163, 255, 0) 100%);
  }

  .page-about .ab-block {
    padding-left: var(--ab-rail);
  }

  .page-about .ab-block::before {
    content: "";
    position: absolute;
    left: 0;
    top: clamp(2.1rem, 5vw, 3.6rem);
    width: 11px;
    height: 11px;
    background: var(--es-void);
    border: 1px solid var(--es-violet);
    transform: rotate(45deg);
  }

  .page-about .ab-block:nth-child(odd)::before {
    border-color: var(--es-cyan);
  }

  .page-about .ab-block + .ab-block::after {
    left: var(--ab-rail);
  }

  .page-about .ab-team {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (min-width: 1180px) {
  .page-about .ab-team {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .ab-track {
    grid-auto-columns: minmax(240px, 1fr);
    overflow-x: visible;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .ab-role,
  .page-about .ab-role::before,
  .page-about .ab-collab__item {
    transition: none;
  }
}
<<<END>>>