.page-about {
  --ab-gap: clamp(30px, 5vw, 68px);
  --ab-rail-w: 212px;
  --ab-ring: 13px;
}

/* ---------- 首屏 ---------- */
.page-about .ab-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: calc(var(--nx-header-h) + clamp(44px, 7vw, 88px)) 0 clamp(46px, 6vw, 84px);
  background:
    radial-gradient(80% 60% at 78% 8%, rgba(138, 75, 255, .26), transparent 62%),
    radial-gradient(60% 50% at 8% 82%, rgba(43, 217, 198, .14), transparent 70%),
    var(--nx-void);
}

.page-about .ab-hero__media {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-about .ab-hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .42;
}

.page-about .ab-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(180deg, rgba(5, 7, 15, .58) 0%, rgba(5, 7, 15, .78) 58%, var(--nx-void) 100%);
  pointer-events: none;
}

.page-about .ab-hero__shell {
  position: relative;
  z-index: 2;
}

.page-about .ab-hero__crumb {
  margin-bottom: clamp(22px, 4vw, 40px);
}

.page-about .ab-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
}

.page-about .ab-hero__title {
  font-size: clamp(32px, 6.4vw, 72px);
  line-height: 1.14;
  letter-spacing: .02em;
  max-width: 15em;
  transform: rotate(-1.1deg);
  transform-origin: left bottom;
}

.page-about .ab-hero__lead {
  max-width: 62ch;
  margin-top: 22px;
}

.page-about .ab-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.page-about .ab-hero__side {
  display: none;
}

.page-about .ab-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(36px, 6vw, 62px) 0 0;
  background: var(--nx-line);
  border: 1px solid var(--nx-line);
  border-radius: var(--nx-radius-band);
  overflow: hidden;
}

.page-about .ab-hero__stat {
  padding: 16px 18px;
  background: rgba(14, 23, 48, .74);
}

.page-about .ab-hero__stat dt {
  font-size: 13px;
  color: var(--nx-dust);
  letter-spacing: .06em;
}

.page-about .ab-hero__stat dd {
  margin: 6px 0 0;
  font-size: 22px;
  font-weight: 700;
  color: var(--nx-strong);
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.page-about .ab-hero__stat dd .nx-mono {
  font-size: 30px;
  color: var(--nx-gold);
  text-shadow: 0 0 16px rgba(245, 196, 98, .38);
}

/* ---------- 通用小节头 ---------- */
.page-about .ab-sec-head {
  margin-bottom: clamp(24px, 4vw, 42px);
}

.page-about .ab-sec-head .nx-title {
  margin-top: 12px;
}

.page-about .ab-sec-head .nx-text {
  margin-top: 16px;
  max-width: 66ch;
}

.page-about .ab-sec-head--wide .nx-text {
  max-width: 78ch;
}

/* ---------- 索引 ---------- */
.page-about .ab-index {
  padding-top: clamp(52px, 7vw, 92px);
}

.page-about .ab-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
}

.page-about .ab-index__item a {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  grid-template-areas:
    "idx name"
    "idx benefit";
  align-items: baseline;
  gap: 4px 14px;
  padding: 16px 18px;
  text-decoration: none;
  color: inherit;
  border: 1px solid var(--nx-line);
  border-radius: var(--nx-radius-card);
  background: linear-gradient(140deg, rgba(51, 38, 94, .34), rgba(14, 23, 48, .82));
  transition: border-color .3s var(--nx-ease), transform .3s var(--nx-ease), background .3s var(--nx-ease);
}

.page-about .ab-index__item a:hover,
.page-about .ab-index__item a:focus-visible {
  border-color: rgba(138, 75, 255, .6);
  transform: translateY(-4px);
}

.page-about .ab-index__item .nx-idx {
  grid-area: idx;
  align-self: start;
}

.page-about .ab-index__name {
  grid-area: name;
  font-size: 18px;
  font-weight: 700;
  color: var(--nx-strong);
}

.page-about .ab-index__benefit {
  grid-area: benefit;
  font-size: 14px;
  line-height: 1.7;
  color: var(--nx-dust);
}

/* ---------- 正文两栏 ---------- */
.page-about .ab-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--ab-gap);
  max-width: var(--nx-wide);
  margin: 0 auto;
  padding: 0 var(--nx-gutter);
}

.page-about .ab-body__main {
  min-width: 0;
}

.page-about .ab-rail {
  display: none;
}

/* ---------- 品牌主张 ---------- */
.page-about .ab-idea__split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
}

.page-about .ab-idea__col .nx-text + .nx-text {
  margin-top: 16px;
}

.page-about .ab-idea__panel {
  padding: 24px;
}

.page-about .ab-idea__claim {
  margin: 12px 0 0;
  font-size: clamp(19px, 2.4vw, 24px);
  font-weight: 700;
  line-height: 1.6;
  color: var(--nx-strong);
}

.page-about .ab-idea__points {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .ab-idea__points li {
  padding-top: 12px;
  border-top: 1px solid var(--nx-line);
  font-size: 15px;
  line-height: 1.7;
  color: var(--nx-body);
}

.page-about .ab-idea__points .nx-mono {
  color: var(--nx-aurora);
  font-weight: 600;
  margin-right: 4px;
}

/* ---------- 运动版图 ---------- */
.page-about .ab-map__fig {
  margin: 0 0 clamp(24px, 4vw, 36px);
}

.page-about .ab-map__fig img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border-radius: var(--nx-radius-card);
  border: 1px solid var(--nx-line);
}

.page-about .ab-sports {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.page-about .ab-sport {
  position: relative;
  padding: 13px 15px;
  border-radius: var(--nx-radius-card);
  border: 1px solid var(--nx-line);
  background: linear-gradient(150deg, rgba(51, 38, 94, .4), rgba(14, 23, 48, .88));
  transition: transform .35s var(--nx-ease), border-color .35s var(--nx-ease), box-shadow .35s var(--nx-ease);
}

.page-about .ab-sport:nth-child(3n + 2) {
  transform: translateY(7px);
}

.page-about .ab-sport:hover {
  transform: translateY(-6px);
  border-color: rgba(138, 75, 255, .58);
  box-shadow: 0 12px 32px rgba(5, 7, 15, .6);
}

.page-about .ab-sport__name {
  display: block;
  font-size: 16px;
  font-weight: 700;
  color: var(--nx-strong);
  letter-spacing: .02em;
}

.page-about .ab-sport__n {
  display: block;
  margin-top: 6px;
  font-family: var(--nx-mono);
  font-size: 12px;
  color: var(--nx-dust);
  opacity: .72;
  transition: color .3s var(--nx-ease), opacity .3s var(--nx-ease);
}

.page-about .ab-sport:hover .ab-sport__n {
  color: var(--nx-aurora);
  opacity: 1;
}

/* ---------- 时间轴 ---------- */
.page-about .ab-time {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}

.page-about .ab-time::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 10px;
  bottom: 26px;
  width: 1px;
  background: linear-gradient(180deg, var(--nx-violet), rgba(245, 196, 98, .55) 62%, transparent);
}

.page-about .ab-time__node {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 8px;
  padding: 0 0 30px 40px;
}

.page-about .ab-time__node::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 9px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--nx-gold);
  box-shadow: 0 0 0 4px rgba(245, 196, 98, .14), 0 0 16px rgba(245, 196, 98, .75);
}

.page-about .ab-time__year {
  font-family: var(--nx-mono);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: .06em;
  color: var(--nx-gold);
  text-shadow: 0 0 14px rgba(245, 196, 98, .4);
}

.page-about .ab-time__card {
  padding: 18px 20px;
  border: 1px solid var(--nx-line);
  border-left: 2px solid rgba(138, 75, 255, .5);
  border-radius: var(--nx-radius-band);
  background: linear-gradient(135deg, rgba(14, 23, 48, .92), rgba(51, 38, 94, .24));
}

.page-about .ab-time__card .nx-text {
  margin-top: 10px;
  font-size: 15px;
}

/* ---------- 团队 ---------- */
.page-about .ab-team__split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 40px);
}

.page-about .ab-rings {
  position: relative;
  width: min(292px, 74vw);
  aspect-ratio: 1;
  margin: 0 auto;
}

.page-about .ab-rings span {
  position: absolute;
  display: block;
  border-radius: 50%;
  -webkit-mask: radial-gradient(farthest-side, transparent calc(100% - var(--ab-ring)), #000 calc(100% - var(--ab-ring)));
  mask: radial-gradient(farthest-side, transparent calc(100% - var(--ab-ring)), #000 calc(100% - var(--ab-ring)));
}

.page-about .ab-rings__a {
  inset: 0;
  background: conic-gradient(from -90deg, var(--nx-violet) 0 100%);
  opacity: .9;
}

.page-about .ab-rings__b {
  inset: 15%;
  background: conic-gradient(from -90deg, var(--nx-gold) 0 39%, rgba(155, 166, 191, .16) 39% 100%);
}

.page-about .ab-rings__c {
  inset: 30%;
  background: conic-gradient(from -90deg, var(--nx-aurora) 0 33%, rgba(155, 166, 191, .14) 33% 100%);
}

.page-about .ab-rings__core {
  position: absolute;
  inset: 44%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(5, 7, 15, .92);
  border: 1px solid rgba(245, 196, 98, .3);
  font-size: 22px;
  font-weight: 600;
  color: var(--nx-strong);
}

.page-about .ab-rings__core small {
  font-size: 12px;
  color: var(--nx-dust);
  font-weight: 400;
  margin-top: 2px;
}

.page-about .ab-legend {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .ab-legend li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--nx-body);
}

.page-about .ab-legend .nx-mono {
  margin-left: auto;
  color: var(--nx-strong);
  font-weight: 600;
}

.page-about .ab-legend__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex: 0 0 auto;
}

.page-about .ab-legend__dot--violet {
  background: var(--nx-violet);
  box-shadow: 0 0 10px rgba(138, 75, 255, .7);
}

.page-about .ab-legend__dot--gold {
  background: var(--nx-gold);
  box-shadow: 0 0 10px rgba(245, 196, 98, .7);
}

.page-about .ab-legend__dot--aurora {
  background: var(--nx-aurora);
  box-shadow: 0 0 10px rgba(43, 217, 198, .7);
}

.page-about .ab-team__fig {
  margin: 0 0 22px;
}

.page-about .ab-team__fig img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border-radius: var(--nx-radius-card);
  border: 1px solid var(--nx-line);
}

.page-about .ab-team__duties {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 20px;
}

.page-about .ab-team__duties li {
  padding-left: 16px;
  border-left: 2px solid rgba(43, 217, 198, .34);
}

.page-about .ab-team__duties .nx-text {
  margin-top: 8px;
  font-size: 15px;
}

/* ---------- 数据生态 ---------- */
.page-about .ab-flow {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  counter-reset: abflow;
}

.page-about .ab-flow__step {
  padding: 20px 22px;
  border: 1px solid var(--nx-line);
  border-radius: var(--nx-radius-card);
  background: linear-gradient(160deg, rgba(14, 23, 48, .9), rgba(51, 38, 94, .2));
}

.page-about .ab-flow__step .nx-text {
  margin-top: 10px;
  font-size: 15px;
}

.page-about .ab-flow__step:nth-child(2) {
  border-color: rgba(245, 196, 98, .3);
}

.page-about .ab-flow__step:nth-child(3) {
  border-color: rgba(43, 217, 198, .3);
}

/* ---------- 资质印章 ---------- */
.page-about .ab-seals {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.page-about .ab-seal {
  border: 1px solid rgba(51, 38, 94, .9);
  border-radius: var(--nx-radius-band);
  background: rgba(14, 23, 48, .7);
  transition: border-color .3s var(--nx-ease);
}

.page-about .ab-seal[open] {
  border-color: rgba(245, 196, 98, .44);
}

.page-about .ab-seal summary {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 600;
  color: var(--nx-strong);
}

.page-about .ab-seal summary::-webkit-details-marker {
  display: none;
}

.page-about .ab-seal summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--nx-mono);
  font-size: 18px;
  color: var(--nx-dust);
  transition: transform .3s var(--nx-ease), color .3s var(--nx-ease);
}

.page-about .ab-seal[open] summary::after {
  content: "−";
  color: var(--nx-gold);
}

.page-about .ab-seal__mark {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1px solid rgba(245, 196, 98, .42);
  color: var(--nx-gold);
  font-size: 12px;
}

.page-about .ab-seal__name {
  min-width: 0;
}

.page-about .ab-seal .nx-text {
  padding: 0 18px 18px 64px;
  font-size: 15px;
}

/* ---------- 官方直营 ---------- */
.page-about .ab-why {
  padding-bottom: clamp(20px, 4vw, 40px);
}

.page-about .ab-why__paper {
  border-radius: var(--nx-radius-band);
}

.page-about .ab-why__cols {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  margin-top: 20px;
}

.page-about .ab-why__cols .nx-text + .nx-text {
  margin-top: 14px;
}

.page-about .ab-why__links {
  display: grid;
  gap: 10px;
  align-content: start;
}

.page-about .ab-why__link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  grid-template-areas:
    "arw strong"
    "arw em";
  align-items: baseline;
  gap: 4px 12px;
  padding: 14px 16px;
  text-decoration: none;
  color: var(--nx-ink);
  border: 1px solid rgba(18, 20, 28, .18);
  border-radius: 14px 4px 14px 4px;
  background: rgba(255, 255, 255, .48);
  transition: transform .28s var(--nx-ease), border-color .28s var(--nx-ease);
}

.page-about .ab-why__link:hover,
.page-about .ab-why__link:focus-visible {
  transform: translateY(-4px);
  border-color: rgba(138, 75, 255, .6);
}

.page-about .ab-why__link .nx-mono {
  grid-area: arw;
  color: #6a3fd0;
  font-weight: 700;
}

.page-about .ab-why__link strong {
  grid-area: strong;
  font-size: 16px;
}

.page-about .ab-why__link em {
  grid-area: em;
  font-style: normal;
  font-size: 13px;
  color: #4a4f60;
}

/* ---------- 尾部导航 ---------- */
.page-about .ab-next {
  padding: clamp(48px, 6vw, 84px) 0 0;
}

.page-about .ab-next__bar {
  display: grid;
  gap: 16px;
  padding-top: 24px;
}

.page-about .ab-next__lead {
  margin: 0;
  font-family: var(--nx-mono);
  font-size: 12px;
  letter-spacing: .22em;
  color: var(--nx-dust);
}

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

.page-about .ab-next__list a {
  display: inline-block;
  padding: 10px 18px;
  font-size: 14px;
  text-decoration: none;
  color: var(--nx-body);
  border: 1px solid var(--nx-line-strong);
  border-radius: var(--nx-radius-pill);
  transition: color .28s var(--nx-ease), border-color .28s var(--nx-ease), background .28s var(--nx-ease);
}

.page-about .ab-next__list a:hover,
.page-about .ab-next__list a:focus-visible {
  color: var(--nx-void);
  background: var(--nx-gold);
  border-color: var(--nx-gold);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .ab-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

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

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

@media (min-width: 760px) {
  .page-about .ab-idea__split {
    grid-template-columns: 7fr 5fr;
    align-items: start;
  }

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

  .page-about .ab-team__rings {
    position: sticky;
    top: calc(var(--nx-header-h) + 32px);
  }

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

  .page-about .ab-time::before {
    left: 96px;
  }

  .page-about .ab-time__node {
    grid-template-columns: 96px minmax(0, 1fr);
    gap: 44px;
    padding-left: 0;
  }

  .page-about .ab-time__node::before {
    left: 91px;
  }

  .page-about .ab-time__year {
    text-align: right;
    padding-right: 0;
  }

  .page-about .ab-time__node:nth-child(even) .ab-time__card {
    margin-left: 26px;
  }

  .page-about .ab-time__node:nth-child(3n) .ab-time__card {
    margin-left: 12px;
  }
}

@media (min-width: 1000px) {
  .page-about .ab-hero__grid {
    grid-template-columns: minmax(0, 1fr) 96px;
    align-items: start;
  }

  .page-about .ab-hero__side {
    display: block;
    writing-mode: vertical-rl;
    justify-self: end;
    margin: 0;
    padding-top: 8px;
    font-family: var(--nx-mono);
    font-size: 11px;
    letter-spacing: .34em;
    color: var(--nx-dust);
    opacity: .72;
  }

  .page-about .ab-body {
    grid-template-columns: minmax(0, 1fr) var(--ab-rail-w);
    align-items: start;
  }

  .page-about .ab-rail {
    display: block;
  }

  .page-about .ab-rail__inner {
    position: sticky;
    top: calc(var(--nx-header-h) + 36px);
    padding-left: 20px;
    border-left: 1px solid var(--nx-line);
  }

  .page-about .ab-rail__title {
    margin: 0 0 14px;
  }

  .page-about .ab-rail__list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 2px;
  }

  .page-about .ab-rail__list a {
    display: flex;
    align-items: baseline;
    gap: 10px;
    padding: 8px 10px;
    font-size: 14px;
    text-decoration: none;
    color: var(--nx-dust);
    border-radius: 10px 3px 10px 3px;
    transition: color .26s var(--nx-ease), background .26s var(--nx-ease);
  }

  .page-about .ab-rail__list a:hover,
  .page-about .ab-rail__list a:focus-visible {
    color: var(--nx-strong);
    background: rgba(138, 75, 255, .16);
  }

  .page-about .ab-rail__list .nx-mono {
    font-size: 11px;
    color: var(--nx-gold);
  }

  .page-about .ab-why__cols {
    grid-template-columns: 7fr 5fr;
  }

  .page-about .ab-next__bar {
    grid-template-columns: auto minmax(0, 1fr);
    align-items: center;
    gap: 28px;
  }

  .page-about .ab-next__list {
    justify-content: flex-end;
  }
}

@media (min-width: 1180px) {
  .page-about .ab-sports {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .ab-sport,
  .page-about .ab-index__item a,
  .page-about .ab-why__link {
    transition: none;
  }

  .page-about .ab-sport:nth-child(3n + 2) {
    transform: none;
  }

  .page-about .ab-hero__title {
    transform: none;
  }
}
<<<END>>>

只输出标记本身和它们之间的内容，不要输出任何解释、开场白或结尾说明。