.page-about{
  --about-hair: rgba(169,193,180,.18);
  --about-grid: rgba(61,224,214,.07);
  position: relative;
  color: var(--text);
  background:
    radial-gradient(880px 520px at 92% -8%, rgba(23,92,58,.55), transparent 60%),
    radial-gradient(680px 420px at 0% 24%, rgba(46,139,87,.16), transparent 66%),
    var(--ink-950);
  padding-bottom: clamp(48px,7vw,96px);
  overflow-x: hidden;
}

.page-about .breadcrumbs{
  padding-block: clamp(14px,2vw,22px) 0;
}

/* ---------- 封面 ---------- */
.page-about .cover{
  position: relative;
  padding-block: clamp(26px,4vw,52px) clamp(40px,6vw,80px);
}
.page-about .cover::after{
  content: "";
  position: absolute;
  left: -8%;
  right: -8%;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--hair-strong), transparent);
  transform: skewY(-2.5deg);
  transform-origin: left center;
}
.page-about .cover__grid{
  display: grid;
  gap: clamp(28px,4vw,56px);
  align-items: end;
}
.page-about .display{
  margin: 12px 0 clamp(16px,2.4vw,26px);
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(32px,6vw,64px);
  line-height: 1.03;
  letter-spacing: -.015em;
  color: var(--bone-100);
}
.page-about .cover__intro{
  max-width: 40em;
  margin: 0 0 clamp(20px,3vw,30px);
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-dim);
}
.page-about .cover__chips{
  gap: 10px;
}

.page-about .cover__index{
  border-top: 1px solid var(--about-hair);
  padding-top: clamp(14px,2vw,20px);
}
.page-about .cover__index .label{
  display: block;
  margin: 0 0 8px;
  color: var(--mist-300);
}
.page-about .cover-index{
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-about .cover-index__item a{
  display: grid;
  grid-template-columns: 44px minmax(0,1fr);
  gap: 12px;
  align-items: baseline;
  padding: 13px 12px 13px 0;
  border-bottom: 1px solid var(--about-hair);
  color: var(--text);
  text-decoration: none;
  transition: background .22s var(--ease), padding-left .22s var(--ease), color .22s var(--ease);
}
.page-about .cover-index__item a:hover,
.page-about .cover-index__item a:focus-visible{
  padding-left: 10px;
  background: linear-gradient(90deg, rgba(61,224,214,.12), transparent 72%);
  color: var(--cyan-400);
  outline: none;
}
.page-about .cover-index__num{
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--amber-500);
}
.page-about .cover-index__name{
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 15px;
  line-height: 1.45;
}

/* ---------- 时间轴 ---------- */
.page-about .timeline{
  display: grid;
  gap: clamp(22px,3.5vw,34px);
  margin-top: clamp(26px,4vw,44px);
}
.page-about .stage{
  position: relative;
}
.page-about .stage__mark{
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
  padding-bottom: 10px;
}
.page-about .stage__num{
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(36px,7vw,64px);
  line-height: .9;
  color: transparent;
  -webkit-text-stroke: 1.5px rgba(169,193,180,.55);
}
.page-about .stage__dot{
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--pitch-500);
  box-shadow: 0 0 0 4px rgba(46,139,87,.18);
  flex: none;
}
.page-about .stage:first-child .stage__dot{
  background: var(--amber-500);
  box-shadow: 0 0 0 4px rgba(245,166,35,.2);
}
.page-about .stage__tag{
  margin: 0;
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--mist-300);
}

.page-about .stage__panel{
  position: relative;
  padding: clamp(20px,3vw,34px);
  background: var(--panel-bg);
  border: 1px solid var(--about-hair);
  border-radius: var(--radius-m);
  transition: border-color .25s var(--ease), box-shadow .25s var(--ease);
}
.page-about .stage__panel:hover{
  border-color: rgba(61,224,214,.45);
  box-shadow: 0 18px 40px -28px rgba(0,0,0,.9);
}
.page-about .stage__panel .h3{
  margin: 0 0 12px;
  font-size: clamp(19px,2.2vw,26px);
  line-height: 1.3;
  color: var(--bone-100);
}
.page-about .stage__text{
  margin: 0 0 12px;
  color: var(--text-dim);
  line-height: 1.8;
}
.page-about .stage__list{
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 9px;
}
.page-about .stage__list li{
  position: relative;
  padding-left: 22px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-dim);
}
.page-about .stage__list li::before{
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 10px;
  height: 2px;
  background: var(--pitch-500);
}
.page-about .stage__links{
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--about-hair);
}
.page-about .stage__link{
  font-size: 14px;
  font-weight: 700;
  color: var(--cyan-400);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .2s var(--ease), color .2s var(--ease);
}
.page-about .stage__link:hover,
.page-about .stage__link:focus-visible{
  color: var(--amber-500);
  border-bottom-color: var(--amber-500);
  outline: none;
}

.page-about .stage__figure{
  position: relative;
  margin: 22px 0 0;
}
.page-about .frame img{
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius-s);
}
.page-about .stage__figure .frame__tag{
  background: var(--pitch-700);
  color: var(--bone-100);
}
.page-about .frame__caption{
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--mist-300);
}

/* ---------- 团队带 ---------- */
.page-about .crew{
  position: relative;
  border-block: 1px solid var(--about-hair);
  background: linear-gradient(180deg, rgba(10,29,21,.92), rgba(5,12,9,.62));
  overflow: hidden;
}
.page-about .crew::before{
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--about-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--about-grid) 1px, transparent 1px);
  background-size: 52px 52px;
  -webkit-mask-image: radial-gradient(72% 78% at 26% 18%, #000, transparent 78%);
  mask-image: radial-gradient(72% 78% at 26% 18%, #000, transparent 78%);
  pointer-events: none;
}
.page-about .crew .container{
  position: relative;
}
.page-about .crew-grid{
  display: grid;
  gap: clamp(18px,3vw,30px);
  margin-top: clamp(24px,4vw,40px);
}
.page-about .crew-stat{
  padding: 18px 4px 18px 0;
  border-top: 1px solid var(--about-hair);
  transition: transform .25s var(--ease);
}
.page-about .crew-stat__num{
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(42px,7vw,76px);
  line-height: .95;
  letter-spacing: -.02em;
  color: var(--bone-100);
  transition: color .25s var(--ease);
}
.page-about .crew-stat__note{
  margin: 10px 0 0;
  font-size: 13px;
  line-height: 1.72;
  color: var(--text-dim);
  max-width: 30em;
}
.page-about .crew-stat:hover,
.page-about .crew-stat:focus-within{
  transform: translateY(-3px);
}
.page-about .crew-stat:hover .crew-stat__num{
  color: var(--amber-500);
}
.page-about .crew-stat .data-label{
  display: block;
  margin-top: 8px;
  color: var(--cyan-400);
}
.page-about .crew__figure{
  position: relative;
  margin: clamp(26px,4vw,44px) 0 0;
}

/* ---------- 合作生态 ---------- */
.page-about .partners__inner{
  display: grid;
  gap: clamp(24px,4vw,48px);
}
.page-about .partners__text{
  margin: 14px 0 0;
  color: var(--text-dim);
  line-height: 1.8;
  max-width: 36em;
}
.page-about .eco-cloud{
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-content: flex-start;
}
.page-about .eco-tag{
  display: inline-flex;
  flex-direction: column;
  padding: 11px 18px;
  border: 1px solid var(--hair-strong);
  border-radius: 999px;
  background: rgba(10,29,21,.55);
  transition: border-color .22s var(--ease), background .22s var(--ease);
}
.page-about .eco-tag__name{
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 14px;
  line-height: 1.4;
  color: var(--bone-100);
}
.page-about .eco-tag__meta{
  font-size: 11px;
  line-height: 1.5;
  letter-spacing: .02em;
  color: var(--mist-300);
  margin-top: 3px;
}
.page-about .eco-tag:hover,
.page-about .eco-tag:focus-within{
  border-color: var(--cyan-400);
  background: rgba(61,224,214,.08);
}
@media (min-width: 768px){
  .page-about .eco-tag__meta{
    max-height: 0;
    opacity: 0;
    margin-top: 0;
    overflow: hidden;
    transition: max-height .25s var(--ease), opacity .25s var(--ease), margin-top .25s var(--ease);
  }
  .page-about .eco-tag:hover .eco-tag__meta,
  .page-about .eco-tag:focus-within .eco-tag__meta{
    max-height: 44px;
    opacity: 1;
    margin-top: 4px;
  }
}

/* ---------- 收尾 ---------- */
.page-about .next__box{
  position: relative;
  padding: clamp(26px,4.5vw,54px);
  border-radius: var(--radius-l);
  background: linear-gradient(140deg, var(--pitch-700), var(--forest-900) 62%, var(--ink-950));
  border: 1px solid rgba(46,139,87,.55);
  overflow: hidden;
}
.page-about .next__box::after{
  content: "";
  position: absolute;
  right: -18%;
  bottom: -60%;
  width: 62%;
  height: 200%;
  background: linear-gradient(180deg, rgba(245,166,35,.20), rgba(245,166,35,0));
  transform: rotate(14deg);
  pointer-events: none;
}
.page-about .next__box > *{
  position: relative;
}
.page-about .next__title{
  margin: 10px 0 12px;
  max-width: 22em;
}
.page-about .next__text{
  margin: 0;
  max-width: 40em;
  color: rgba(234,244,238,.82);
  line-height: 1.8;
}
.page-about .next__contact{
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin: 18px 0 22px;
}
.page-about .next__mail{
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: .01em;
  color: var(--amber-500);
  word-break: break-all;
}
.page-about .next__chips{
  gap: 12px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px){
  .page-about .crew-grid{
    grid-template-columns: repeat(2, minmax(0,1fr));
  }
}

@media (min-width: 900px){
  .page-about .display{
    transform: skewX(var(--skew));
    transform-origin: left bottom;
  }
  .page-about .cover__grid{
    grid-template-columns: minmax(0,1.55fr) minmax(0,.85fr);
  }
  .page-about .stage{
    display: grid;
    grid-template-columns: clamp(110px,13vw,170px) minmax(0,1fr);
    gap: clamp(22px,3.6vw,56px);
    align-items: start;
  }
  .page-about .stage__mark{
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
    padding-bottom: 0;
    padding-top: 4px;
  }
  .page-about .stage__tag{
    letter-spacing: .12em;
  }
  .page-about .stage__mark::before{
    content: "";
    position: absolute;
    left: 4px;
    top: 92px;
    bottom: -46px;
    width: 1px;
    background: linear-gradient(180deg, rgba(46,139,87,.85), rgba(46,139,87,0));
  }
  .page-about .stage:last-child .stage__mark::before{
    display: none;
  }
  .page-about .stage__dot{
    position: relative;
  }
  .page-about .crew-grid{
    grid-template-columns: repeat(4, minmax(0,1fr));
  }
  .page-about .partners__inner{
    grid-template-columns: minmax(0,.9fr) minmax(0,1.1fr);
    align-items: start;
  }
}

@media (min-width: 1100px){
  .page-about .stage:nth-child(even) .stage__panel{
    margin-inline-start: clamp(0px,3vw,48px);
  }
  .page-about .stage:nth-child(odd) .stage__panel{
    margin-inline-end: clamp(0px,2vw,32px);
  }
}

@media (max-width: 639px){
  .page-about .display br{
    display: none;
  }
  .page-about .next__box::after{
    display: none;
  }
  .page-about .cover-index__item a{
    grid-template-columns: 36px minmax(0,1fr);
  }
}
<<<END>>>