.page-about{
  --ab-rail: minmax(84px, 18%);
  --ab-gap: clamp(18px, 3vw, 46px);
  --ab-pad: clamp(46px, 8vw, 104px);
  background: var(--ink);
  color: var(--paper);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.8;
  overflow-x: clip;
  padding-bottom: clamp(40px, 6vw, 80px);
}

.page-about :where(p, h1, h2, h3, ul, ol, figure){
  margin-top: 0;
}

.page-about a{
  color: inherit;
}

.page-about .ab-wrap{
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gut);
}

.page-about .ab-link{
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--edge);
  padding-bottom: 2px;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}

.page-about .ab-link:hover,
.page-about .ab-link:focus-visible{
  color: var(--orange);
  border-bottom-color: var(--orange);
}

.page-about .ab-more{
  margin: clamp(14px, 2vw, 22px) 0 0;
  font-size: 15px;
}

/* ---------- 首屏 ---------- */
.page-about .ab-hero{
  padding-top: clamp(22px, 4vw, 44px);
  background:
    radial-gradient(120% 88% at 10% 0%, rgba(53,240,208,.13), transparent 60%),
    radial-gradient(90% 70% at 96% 12%, rgba(123,92,255,.14), transparent 62%),
    var(--ink);
}

.page-about .breadcrumbs{
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: .02em;
  color: var(--rock);
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .breadcrumbs a{
  color: var(--rock);
  text-decoration: none;
}

.page-about .breadcrumbs a:hover{
  color: var(--cyan);
}

.page-about .ab-hero__grid{
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3.4vw, 40px);
  margin-top: clamp(22px, 3.6vw, 42px);
}

.page-about .ab-hero__lead .eyebrow{
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .3em;
  color: var(--clay);
  text-transform: uppercase;
  margin-bottom: 14px;
}

.page-about .ab-hero__lead .display{
  font-size: clamp(34px, 7.2vw, 68px);
  font-weight: 800;
  letter-spacing: -.02em;
  line-height: 1.1;
  margin-bottom: clamp(16px, 2.4vw, 26px);
  color: var(--paper);
}

.page-about .ab-hero__lead .lede{
  font-size: clamp(16px, 2vw, 18px);
  line-height: 1.8;
  color: rgba(244,241,232,.84);
  max-width: 46ch;
}

.page-about .ab-hero__aside{
  display: grid;
  gap: 8px;
  border-left: 2px solid var(--cyan);
  padding-left: clamp(14px, 2vw, 22px);
  box-shadow: -2px 0 22px rgba(53,240,208,.18);
}

.page-about .ab-hero__domain{
  font-family: var(--mono);
  font-size: 14px;
  letter-spacing: .02em;
  color: var(--cyan);
  margin: 0;
  word-break: break-all;
}

.page-about .ab-hero__aside .note{
  color: var(--rock);
  font-size: 13px;
  margin: 0;
}

.page-about .ab-hero__figure{
  margin: clamp(26px, 4vw, 48px) 0 0;
}

.page-about .ab-hero__figure .figure__img,
.page-about .ab-hero__figure img{
  width: 100%;
  height: auto;
  display: block;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border: 1px solid var(--edge-soft);
}

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

.page-about .figure__caption{
  margin-top: 10px;
  font-size: 13px;
  color: var(--rock);
  line-height: 1.7;
}

/* ---------- 章节骨架 ---------- */
.page-about .ab-sec{
  padding-block: var(--ab-pad);
  position: relative;
}

.page-about .ab-sec + .ab-sec{
  border-top: 1px solid var(--edge-soft);
}

.page-about .ab-row{
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(14px, 2.2vw, 26px);
}

.page-about .ab-rail{
  position: relative;
}

.page-about .rail-note{
  display: block;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .3em;
  color: var(--rock);
  line-height: 1.6;
}

.page-about .section-head{
  display: flex;
  align-items: baseline;
  gap: clamp(12px, 2vw, 22px);
  border-bottom: 1px solid var(--edge-soft);
  padding-bottom: 14px;
  margin-bottom: clamp(20px, 3vw, 34px);
}

.page-about .section-head__no{
  font-family: var(--mono);
  font-size: clamp(26px, 4vw, 44px);
  line-height: 1;
  color: var(--clay);
  letter-spacing: -.01em;
}

.page-about .section-head__title{
  margin: 0;
  font-size: clamp(23px, 3.4vw, 36px);
  font-weight: 800;
  letter-spacing: -.02em;
  line-height: 1.25;
}

.page-about .ab-body p{
  max-width: 64ch;
  margin-bottom: 1.1em;
  color: rgba(244,241,232,.84);
}

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

/* ---------- 团队清单 ---------- */
.page-about .ab-team{
  list-style: none;
  margin: clamp(20px, 3vw, 32px) 0;
  padding: 0;
}

.page-about .ab-team__item{
  display: grid;
  gap: 8px;
  padding: clamp(16px, 2.4vw, 24px) 0;
  border-top: 1px solid var(--edge-soft);
}

.page-about .ab-team__item:last-child{
  border-bottom: 1px solid var(--edge-soft);
}

.page-about .ab-team__name{
  font-size: 19px;
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-about .ab-team__desc p{
  margin: 0;
}

.page-about .ab-team__out{
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: .02em;
  color: var(--cyan);
  margin-bottom: 8px;
}

/* ---------- 米白画册区块 ---------- */
.page-about .ab-sec--paper{
  background: var(--paper);
  color: var(--ink);
  border-top: none;
}

.page-about .ab-sec--paper .section-head{
  border-bottom-color: rgba(14,17,48,.16);
}

.page-about .ab-sec--paper .section-head__title{
  color: var(--ink);
}

.page-about .ab-sec--paper .section-head__no{
  color: var(--clay);
}

.page-about .ab-sec--paper .ab-split__text p{
  color: #2A2E45;
}

.page-about .ab-sec--paper .figure__caption{
  color: #6B7185;
}

.page-about .ab-sec--paper .ab-link{
  color: var(--teal-ink);
  border-bottom-color: rgba(12,110,96,.36);
}

.page-about .ab-sec--paper .ab-link:hover,
.page-about .ab-sec--paper .ab-link:focus-visible{
  color: var(--orange);
  border-bottom-color: var(--orange);
}

/* ---------- 图文分栏 ---------- */
.page-about .ab-split{
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 52px);
  align-items: start;
}

.page-about .ab-split__text p{
  max-width: 58ch;
  margin-bottom: 1.1em;
}

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

.page-about .ab-split__figure{
  margin: 0;
}

.page-about .ab-split__figure img{
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  border: 1px solid var(--edge-soft);
}

.page-about .ab-sec--paper .ab-split__figure img{
  border-color: rgba(14,17,48,.14);
}

/* ---------- 版本时间线 ---------- */
.page-about .ab-timeline{
  list-style: none;
  margin: clamp(20px, 3vw, 32px) 0;
  padding: 0;
}

.page-about .ab-timeline__node{
  position: relative;
  padding-left: clamp(28px, 4vw, 46px);
  padding-bottom: clamp(22px, 3.2vw, 34px);
}

.page-about .ab-timeline__node::before{
  content: "";
  position: absolute;
  left: 1px;
  top: 8px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--ink);
  border: 2px solid var(--cyan);
  box-sizing: border-box;
  box-shadow: 0 0 12px rgba(53,240,208,.45);
}

.page-about .ab-timeline__node::after{
  content: "";
  position: absolute;
  left: 6px;
  top: 22px;
  bottom: 0;
  width: 1px;
  background: linear-gradient(180deg, rgba(53,240,208,.5), rgba(53,240,208,.05));
}

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

.page-about .ab-timeline__node:last-child::after{
  display: none;
}

.page-about .ab-timeline__ver{
  display: inline-block;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: .02em;
  color: var(--violet);
  margin-bottom: 6px;
}

.page-about .ab-timeline__text h3{
  margin: 0 0 6px;
  font-size: clamp(18px, 2.2vw, 21px);
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-about .ab-timeline__text p{
  margin: 0;
  color: rgba(244,241,232,.78);
  max-width: 58ch;
}

/* ---------- 三条底线 ---------- */
.page-about .ab-pledge{
  list-style: none;
  margin: clamp(20px, 3vw, 32px) 0 0;
  padding: 0;
}

.page-about .ab-pledge__item{
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(14px, 2.4vw, 30px);
  padding: clamp(18px, 2.8vw, 28px) 0;
  border-top: 1px solid var(--edge-soft);
}

.page-about .ab-pledge__item:last-child{
  border-bottom: 1px solid var(--edge-soft);
}

.page-about .ab-pledge__no{
  font-family: var(--mono);
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1.1;
  color: var(--clay);
}

.page-about .ab-pledge__title{
  margin: 0 0 6px;
  font-size: clamp(18px, 2.2vw, 21px);
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-about .ab-pledge__body p{
  margin: 0;
  color: rgba(244,241,232,.8);
  max-width: 56ch;
}

/* ---------- 江西运营 ---------- */
.page-about .ab-sec--last{
  padding-bottom: clamp(32px, 5vw, 60px);
}

.page-about .ab-sec--last .ab-split__figure img{
  aspect-ratio: 5 / 6;
}

/* ---------- 底部快捷条 ---------- */
.page-about .ab-quick{
  margin-top: clamp(8px, 2vw, 20px);
  border-top: 2px solid var(--cyan);
  border-bottom: 1px solid var(--edge-soft);
  background: linear-gradient(90deg, rgba(23,27,62,.9), rgba(14,17,48,.65));
  padding-block: clamp(28px, 4.6vw, 52px);
}

.page-about .ab-quick__title{
  margin: 0 0 8px;
  font-size: clamp(21px, 3vw, 30px);
  font-weight: 800;
  letter-spacing: -.02em;
}

.page-about .ab-quick__lead{
  margin: 0 0 clamp(16px, 2.4vw, 26px);
  color: var(--rock);
  font-size: 15px;
}

.page-about .ab-quick__links{
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .ab-quick .btn{
  display: inline-block;
  padding: 12px 22px;
  border-radius: 2px;
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
  transition: color .18s var(--ease), border-color .18s var(--ease), background-color .18s var(--ease);
}

.page-about .ab-quick .btn--signal{
  background: var(--orange);
  color: var(--deep);
  border: 1px solid var(--orange);
}

.page-about .ab-quick .btn--signal:hover,
.page-about .ab-quick .btn--signal:focus-visible{
  background: transparent;
  color: var(--orange);
}

.page-about .ab-quick .btn--ghost{
  background: transparent;
  color: var(--cyan);
  border: 1px solid var(--edge);
}

.page-about .ab-quick .btn--ghost:hover,
.page-about .ab-quick .btn--ghost:focus-visible{
  color: var(--orange);
  border-color: var(--orange);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px){
  .page-about .ab-team__item{
    grid-template-columns: minmax(140px, 200px) minmax(0, 1fr);
    gap: clamp(16px, 3vw, 40px);
    align-items: start;
  }
}

@media (min-width: 880px){
  .page-about .ab-hero__grid{
    grid-template-columns: minmax(0, 7fr) minmax(0, 3fr);
    align-items: end;
  }

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

  .page-about .ab-split--flip{
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
  }
}

@media (min-width: 900px){
  .page-about .ab-row{
    grid-template-columns: var(--ab-rail) minmax(0, 1fr);
    gap: var(--ab-gap);
  }

  .page-about .rail-note{
    writing-mode: vertical-rl;
    text-orientation: mixed;
    position: sticky;
    top: clamp(90px, 13vh, 150px);
    max-height: 60vh;
  }
}

@media (prefers-reduced-motion: reduce){
  .page-about *,
  .page-about *::before,
  .page-about *::after{
    animation-duration: .001ms !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }
}
<<<END>>>