.page-about{
  --ab-gap: clamp(16px, 2.4vw, 28px);
  --ab-section-pad: clamp(56px, 8vw, 116px);
  --ab-hair: rgba(159, 176, 200, .20);
  background: var(--ink-900);
  color: var(--white);
}

.page-about .section{
  position: relative;
  padding-block: var(--ab-section-pad);
}

.page-about .ab-h2{
  font-family: var(--font-display);
  font-size: clamp(26px, 4vw, 44px);
  line-height: 1.12;
  letter-spacing: -.01em;
  color: var(--white);
  margin: 12px 0 0;
  max-width: 20em;
}

.page-about .ab-head{
  max-width: 64ch;
  margin-bottom: clamp(24px, 4vw, 44px);
}

.page-about .ab-head__note{
  margin: 14px 0 0;
  color: var(--mist);
  font-size: clamp(15px, 1.1vw, 16px);
  line-height: 1.8;
}

.page-about .ab-text{
  margin: 0 0 clamp(20px, 3vw, 32px);
  color: var(--mist);
  font-size: clamp(15px, 1.15vw, 17px);
  line-height: 1.85;
  max-width: 40em;
}

/* ---------- 首屏 ---------- */
.page-about .ab-hero{
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--ab-hair);
  background:
    radial-gradient(90% 70% at 88% 0%, rgba(34, 211, 238, .10), transparent 62%),
    radial-gradient(70% 60% at 0% 100%, rgba(255, 107, 44, .08), transparent 60%),
    var(--ink-900);
}

.page-about .ab-hero__inner{
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  padding-block: clamp(24px, 4vw, 48px) clamp(36px, 6vw, 80px);
}

.page-about .ab-hero__frame{
  position: relative;
  border: 1px solid var(--line-strong);
  background: rgba(13, 20, 36, .62);
  padding: clamp(20px, 3.4vw, 40px);
  min-width: 0;
}

.page-about .ab-hero__frame::before,
.page-about .ab-hero__frame::after{
  content: "";
  position: absolute;
  width: 14px;
  height: 14px;
  border: 1px solid var(--cyan);
  pointer-events: none;
}

.page-about .ab-hero__frame::before{
  top: -1px;
  left: -1px;
  border-right: 0;
  border-bottom: 0;
}

.page-about .ab-hero__frame::after{
  right: -1px;
  bottom: -1px;
  border-left: 0;
  border-top: 0;
}

.page-about .ab-crumb{
  margin-bottom: clamp(20px, 3vw, 30px);
}

.page-about .ab-crumb__list{
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: .06em;
}

.page-about .ab-crumb__item + .ab-crumb__item::before{
  content: "/";
  color: var(--line-strong);
  margin-right: 10px;
}

.page-about .ab-crumb__link{
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--ease-std), color var(--ease-std);
}

.page-about .ab-crumb__link:hover{
  color: var(--white);
  border-bottom-color: var(--cyan);
}

.page-about .ab-crumb__current{
  color: var(--mist);
}

.page-about .ab-hero__title{
  font-family: var(--font-display);
  font-size: clamp(36px, 7.2vw, 92px);
  line-height: .96;
  letter-spacing: -.02em;
  color: var(--white);
  margin: 16px 0 0;
}

.page-about .ab-hero__mark{
  color: var(--orange);
  display: inline-block;
  position: relative;
}

.page-about .ab-hero__mark::after{
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: .04em;
  height: 4px;
  background: var(--orange);
  opacity: .32;
}

.page-about .ab-hero__lede{
  margin: clamp(18px, 2.6vw, 28px) 0 0;
  max-width: 36em;
  color: var(--mist);
  font-size: clamp(15px, 1.2vw, 17px);
  line-height: 1.85;
}

.page-about .ab-hero__actions{
  margin-top: clamp(20px, 3vw, 30px);
}

.page-about .ab-hero__readout{
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: clamp(26px, 4vw, 40px) 0 0;
  background: var(--ab-hair);
  border: 1px solid var(--ab-hair);
}

.page-about .ab-readout{
  background: var(--ink-800);
  padding: 14px 16px;
  min-width: 0;
}

.page-about .ab-readout dt{
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--cyan);
}

.page-about .ab-readout dd{
  margin: 6px 0 0;
  font-size: 13px;
  color: var(--mist);
  line-height: 1.5;
}

.page-about .ab-hero__media{
  position: relative;
  margin: 0;
  border: 1px solid var(--line-strong);
  background: var(--ink-800);
  min-width: 0;
}

.page-about .ab-hero__media img{
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.page-about .ab-hero__cap{
  display: block;
  padding: 10px 14px;
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--mist);
  border-top: 1px solid var(--ab-hair);
}

/* ---------- 三条原则 ---------- */
.page-about .ab-principles__inner{
  display: grid;
  gap: var(--ab-gap);
}

.page-about .ab-rules{
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .ab-rules__item{
  display: grid;
  grid-template-columns: 2.4rem minmax(0, 1fr);
  gap: 4px 14px;
  padding: clamp(18px, 2.6vw, 26px) 0;
  border-top: 1px solid var(--ab-hair);
  transition: border-color var(--ease-std);
}

.page-about .ab-rules__item:last-child{
  border-bottom: 1px solid var(--ab-hair);
}

.page-about .ab-rules__item:hover{
  border-top-color: var(--line-strong);
}

.page-about .ab-rules__no{
  grid-row: span 2;
  padding-top: 5px;
  font-size: 13px;
  color: var(--cyan);
  letter-spacing: .12em;
}

.page-about .ab-rules__title{
  margin: 0;
  font-size: clamp(17px, 1.8vw, 20px);
  font-weight: 700;
  color: var(--white);
  line-height: 1.45;
}

.page-about .ab-rules__text{
  margin: 0;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.8;
  max-width: 46em;
}

/* ---------- 团队 ---------- */
.page-about .ab-crew__grid{
  display: grid;
  gap: clamp(24px, 4vw, 40px);
}

.page-about .ab-crew__list{
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .ab-crew__row{
  display: grid;
  grid-template-columns: 2.2rem minmax(0, 1fr);
  gap: 4px 14px;
  padding: clamp(16px, 2.4vw, 22px) 0;
  border-top: 1px solid var(--ab-hair);
  transition: background var(--ease-std), border-color var(--ease-std);
}

.page-about .ab-crew__row:last-child{
  border-bottom: 1px solid var(--ab-hair);
}

.page-about .ab-crew__no{
  padding-top: 4px;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--orange);
}

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

.page-about .ab-crew__body h3{
  margin: 0 0 8px;
  font-size: clamp(18px, 1.9vw, 21px);
  color: var(--white);
  line-height: 1.4;
}

.page-about .ab-crew__body p{
  margin: 0;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.82;
  max-width: 46em;
}

.page-about .ab-crew__tag{
  grid-column: 2;
  justify-self: start;
  margin-top: 12px;
}

.page-about .ab-crew__media{
  margin: 0;
  border: 1px solid var(--ab-hair);
  background: var(--ink-800);
  min-width: 0;
}

.page-about .ab-crew__media img{
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-about .ab-crew__cap{
  display: block;
  padding: 10px 14px;
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--mist);
  border-top: 1px solid var(--ab-hair);
}

/* ---------- 时间线 ---------- */
.page-about .ab-story__media{
  margin: 0 0 clamp(24px, 4vw, 44px);
  border: 1px solid var(--ab-hair);
  background: var(--ink-800);
}

.page-about .ab-story__media img{
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
}

.page-about .ab-track{
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}

.page-about .ab-track::before{
  content: "";
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 24px;
  width: 1px;
  background: linear-gradient(180deg, var(--cyan) 0%, var(--cyan-deep) 55%, var(--orange) 100%);
  opacity: .55;
}

.page-about .ab-track__item{
  position: relative;
  padding: 0 0 clamp(24px, 3.4vw, 38px) 34px;
}

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

.page-about .ab-track__dot{
  position: absolute;
  left: 0;
  top: 5px;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  border: 1px solid var(--cyan);
  background: var(--ink-900);
  box-shadow: 0 0 0 4px rgba(34, 211, 238, .10);
}

.page-about .ab-track__item--now .ab-track__dot{
  border-color: var(--orange);
  background: var(--orange);
  box-shadow: 0 0 0 4px rgba(255, 107, 44, .18);
}

.page-about .ab-track__year{
  display: block;
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--cyan);
}

.page-about .ab-track__item--now .ab-track__year{
  color: var(--orange);
}

.page-about .ab-track__item h3{
  margin: 6px 0 8px;
  font-size: clamp(18px, 2vw, 24px);
  color: var(--white);
  line-height: 1.4;
}

.page-about .ab-track__item p{
  margin: 0;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.82;
  max-width: 56ch;
}

/* ---------- 内容生产 ---------- */
.page-about .ab-pipe__list{
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--ab-hair);
  border: 1px solid var(--ab-hair);
}

.page-about .ab-pipe__step{
  position: relative;
  background: var(--ink-800);
  padding: clamp(20px, 2.6vw, 28px);
  min-width: 0;
  transition: background var(--ease-std);
}

.page-about .ab-pipe__step::after{
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  height: 2px;
  width: 34%;
  background: var(--cyan);
}

.page-about .ab-pipe__step:hover{
  background: var(--ink-700);
}

.page-about .ab-pipe__no{
  display: block;
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--orange);
}

.page-about .ab-pipe__step h3{
  margin: 10px 0 8px;
  font-size: clamp(18px, 1.8vw, 20px);
  color: var(--white);
}

.page-about .ab-pipe__step p{
  margin: 0;
  color: var(--mist);
  font-size: 14px;
  line-height: 1.8;
}

/* ---------- 合作生态 ---------- */
.page-about .ab-partners__body{
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 32px);
}

.page-about .ab-partners__col{
  min-width: 0;
  padding-top: 20px;
  border-top: 1px solid var(--line-strong);
}

.page-about .ab-partners__kicker{
  display: block;
  margin: 0 0 8px;
  font-size: clamp(24px, 3.2vw, 34px);
  line-height: 1;
  color: var(--cyan);
}

.page-about .ab-partners__col:nth-child(3) .ab-partners__kicker{
  color: var(--orange);
}

.page-about .ab-partners__col h3{
  margin: 0 0 10px;
  font-size: clamp(17px, 1.7vw, 19px);
  color: var(--white);
}

.page-about .ab-partners__col p:not(.ab-partners__kicker){
  margin: 0;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.82;
}

/* ---------- 规模 ---------- */
.page-about .ab-scale__grid{
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  background: var(--ab-hair);
  border: 1px solid var(--ab-hair);
}

.page-about .ab-scale__cell{
  background: var(--ink-800);
  padding: clamp(18px, 2.6vw, 28px);
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-about .ab-scale__label{
  margin: 0;
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--mist);
  line-height: 1.5;
}

.page-about .ab-scale__value{
  margin: 0;
  font-family: var(--font-num);
  font-size: clamp(26px, 4.4vw, 44px);
  line-height: 1;
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 4px;
}

.page-about .ab-scale__value--cyan{
  color: var(--cyan);
}

.page-about .ab-scale__value--orange{
  color: var(--orange);
}

.page-about .ab-scale__unit{
  font-size: .42em;
  letter-spacing: .04em;
  color: var(--mist);
}

.page-about .ab-scale__note{
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding-left: 18px;
  border-left: 2px solid var(--cyan);
  color: var(--mist);
  font-size: 15px;
  line-height: 1.85;
  max-width: 60em;
}

/* ---------- 下一步 ---------- */
.page-about .ab-exit{
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--ab-hair);
  border: 1px solid var(--ab-hair);
}

.page-about .ab-exit__card{
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(22px, 3vw, 32px);
  background: var(--ink-800);
  color: inherit;
  text-decoration: none;
  min-width: 0;
  transition: background var(--ease-std), transform var(--ease-std);
}

.page-about .ab-exit__card::before{
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  height: 3px;
  width: 46%;
  background: var(--orange);
  clip-path: polygon(0 0, 100% 0, 94% 100%, 0 100%);
}

.page-about .ab-exit__card:nth-child(2)::before{
  background: var(--cyan);
}

.page-about .ab-exit__card:hover{
  background: var(--ink-700);
  transform: translateY(-2px);
}

.page-about .ab-exit__kicker{
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--mist);
}

.page-about .ab-exit__card h3{
  margin: 0;
  font-size: clamp(18px, 1.9vw, 22px);
  color: var(--white);
  line-height: 1.4;
}

.page-about .ab-exit__card p{
  margin: 0;
  color: var(--mist);
  font-size: 14px;
  line-height: 1.8;
  flex: 1;
}

.page-about .ab-exit__go{
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--cyan);
}

.page-about .ab-exit__card:hover .ab-exit__go{
  color: var(--white);
}

.page-about .ab-next__more{
  margin: clamp(22px, 3vw, 32px) 0 0;
  color: var(--mist);
  font-size: 14px;
  line-height: 1.9;
}

.page-about .ab-next__more a{
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--cyan-deep);
  transition: border-color var(--ease-std), color var(--ease-std);
}

.page-about .ab-next__more a:hover{
  color: var(--white);
  border-bottom-color: var(--cyan);
}

.page-about a:focus-visible,
.page-about button:focus-visible{
  outline: 2px solid var(--focus);
  outline-offset: 3px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 560px){
  .page-about .ab-hero__readout{
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-about .ab-pipe__list{
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .ab-scale__grid{
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 760px){
  .page-about .ab-crew__row{
    grid-template-columns: 3rem minmax(0, 1fr) 10rem;
    align-items: start;
    gap: 0 22px;
    padding-inline: 6px;
  }
  .page-about .ab-crew__tag{
    grid-column: 3;
    justify-self: end;
    margin-top: 3px;
  }
  .page-about .ab-crew__row:hover{
    background: rgba(34, 211, 238, .05);
    border-top-color: var(--cyan);
  }
  .page-about .ab-partners__body{
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-about .ab-exit{
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-about .ab-track__item{
    padding-left: 42px;
  }
}

@media (min-width: 960px){
  .page-about .ab-hero__inner{
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: stretch;
  }
  .page-about .ab-hero__media{
    display: flex;
    flex-direction: column;
  }
  .page-about .ab-hero__media img{
    height: 100%;
    aspect-ratio: auto;
    min-height: 320px;
  }
  .page-about .ab-principles__inner{
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    gap: clamp(32px, 5vw, 72px);
  }
  .page-about .ab-principles__head{
    position: sticky;
    top: 96px;
    align-self: start;
  }
  .page-about .ab-crew__grid{
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
    align-items: start;
  }
  .page-about .ab-crew__media{
    position: sticky;
    top: 96px;
  }
}

@media (min-width: 1080px){
  .page-about .ab-pipe__list{
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-about .ab-rules__item{
    grid-template-columns: 3rem minmax(0, 1fr);
  }
}
<<<END>>>