.page-about{
  --about-rail: 96px;
  --about-gap: clamp(24px, 4vw, 48px);
}

.page-about .about-hero{
  position: relative;
  padding-top: clamp(22px, 4vw, 40px);
}
.page-about .breadcrumb{ margin-bottom: clamp(20px, 4vw, 38px); }

.page-about .about-hero__grid{
  display: grid;
  gap: clamp(20px, 3.4vw, 40px);
  min-width: 0;
}
.page-about .about-hero__copy{ min-width: 0; }

.page-about .about-hero__title{
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.35rem, 7.4vw, 5.5rem);
  line-height: 1.04;
  letter-spacing: .02em;
  color: var(--mist);
  margin: .42em 0 0;
  text-wrap: balance;
}

.page-about .about-hero__aside{
  border-left: 1px solid var(--line-deep);
  padding-left: clamp(16px, 2.4vw, 26px);
  min-width: 0;
}
.page-about .about-hero__aside .lede{
  margin: 0 0 clamp(18px, 2.6vw, 26px);
  max-width: 46ch;
}
.page-about .about-hero__actions{
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .about-hero__media{
  position: relative;
  margin-top: clamp(26px, 5vw, 56px);
  overflow: hidden;
}
.page-about .about-hero__media img{
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}
.page-about .about-hero__media::after{
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10,11,13,.10) 0%, rgba(10,11,13,.52) 58%, var(--void) 100%);
  pointer-events: none;
}

@media (min-width: 900px){
  .page-about .about-hero__grid{
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
    column-gap: clamp(32px, 5vw, 76px);
  }
  .page-about .about-hero__title{
    margin-left: calc(-1 * clamp(0px, 1.6vw, 20px));
  }
}

/* ---- 通用分栏 ---- */
.page-about .section{ padding-top: clamp(52px, 7.5vw, 96px); }
.page-about .section--tight{ padding-top: clamp(40px, 5vw, 64px); }

.page-about .about-split{
  display: grid;
  gap: var(--about-gap);
  min-width: 0;
}
.page-about .about-split > *{ min-width: 0; }
.page-about .about-split--top{ align-items: end; }

@media (min-width: 860px){
  .page-about .about-split{
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }
  .page-about .about-split--rev{
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  }
}

.page-about h2{
  font-size: clamp(1.6rem, 3.4vw, 2.5rem);
  line-height: 1.22;
  margin: 0 0 clamp(14px, 2vw, 20px);
  color: var(--mist);
  max-width: 20ch;
}
.page-about h3{
  font-size: clamp(1.05rem, 2vw, 1.2rem);
  line-height: 1.35;
  margin: 0 0 8px;
  color: var(--mist);
}
.page-about p{ margin: 0 0 14px; max-width: 68ch; }

/* ---- 01 做什么 ---- */
.page-about .about-does__lead{
  color: var(--stone);
  border-left: 1px solid var(--line-hair);
  padding-left: 16px;
  margin-bottom: clamp(24px, 3.4vw, 36px);
}
.page-about .does-blocks{
  display: grid;
  gap: clamp(18px, 2.6vw, 26px);
}
.page-about .does-block{
  border-top: 1px solid var(--line-hair);
  padding-top: 16px;
}
.page-about .does-block p{ margin: 0; color: var(--stone); }

.page-about .spec{
  background: var(--glass);
  border: 1px solid var(--line-deep);
  padding: clamp(18px, 2.8vw, 28px);
  backdrop-filter: blur(6px);
}
.page-about .spec__row{
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  padding: 11px 0;
  border-bottom: 1px solid var(--line-hair);
}
.page-about .spec__row:first-child{ padding-top: 0; }
.page-about .spec__row:last-child{ border-bottom: 0; padding-bottom: 0; }
.page-about .spec__k{
  font-size: .875rem;
  color: var(--stone);
  flex: 0 0 auto;
}
.page-about .spec__v{
  font-family: var(--font-mono);
  font-size: .8125rem;
  letter-spacing: .02em;
  color: var(--mist);
  text-align: right;
  overflow-wrap: anywhere;
}

/* ---- 02 六个分区 ---- */
.page-about .about-zones__head{ margin-bottom: clamp(22px, 3.4vw, 36px); }
.page-about .about-zones__head p{ color: var(--stone); }

.page-about .zones{
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  border-top: 1px solid var(--line-hair);
}
.page-about .zone{
  border-left: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-hair);
  padding: 20px 0 20px 16px;
  min-width: 0;
  transition: border-left-color .24s var(--ease), background .24s var(--ease);
}
.page-about .zone:hover{ border-left-color: var(--gold-hi); }
.page-about .zone:focus-within{ border-left-color: var(--gold-hi); }
.page-about .zone__num{
  font-family: var(--font-mono);
  font-size: .8125rem;
  letter-spacing: .12em;
  color: var(--gold);
  margin: 0 0 6px;
}
.page-about .zone__text{
  margin: 0;
  font-size: .9375rem;
  line-height: 1.7;
  color: var(--stone);
}
.page-about .zone--ochre .zone__name{ color: var(--ochre); }
.page-about .zone--blue .zone__name{ color: var(--blue); }
.page-about .zone--ochre .zone__num{ color: var(--ochre); }
.page-about .zone--blue .zone__num{ color: var(--blue); }

@media (min-width: 760px){
  .page-about .zones{
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    column-gap: clamp(28px, 4vw, 56px);
  }
  .page-about .zone{ padding-left: 20px; }
}

/* ---- 数据带 ---- */
.page-about .data-band{ margin-top: clamp(44px, 6vw, 76px); }
.page-about .data-band__cell{ min-width: 0; }

/* ---- 03 时间轴 ---- */
.page-about .about-timeline__hint{
  color: var(--stone);
  font-size: .9375rem;
  margin: 0;
}

.page-about .timeline{
  position: relative;
  margin-top: clamp(26px, 4vw, 44px);
  padding-left: 20px;
  border-left: 1px solid var(--line-deep);
}
.page-about .tl{
  position: relative;
  padding: 20px 0;
  border-bottom: 1px solid var(--line-hair);
}
.page-about .tl:last-child{ border-bottom: 0; padding-bottom: 0; }
.page-about .tl::before{
  content: "";
  position: absolute;
  left: -24px;
  top: 27px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--line-deep);
  transition: background .24s var(--ease), box-shadow .24s var(--ease);
}
.page-about .tl:hover::before,
.page-about .tl[open]::before{
  background: var(--gold-hi);
  box-shadow: 0 0 0 3px rgba(198,161,91,.18);
}

.page-about .tl__head{
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  cursor: pointer;
  list-style: none;
  outline-offset: 4px;
}
.page-about .tl__head::-webkit-details-marker{ display: none; }
.page-about .tl__title{
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(1.02rem, 1.9vw, 1.2rem);
  line-height: 1.4;
  color: var(--mist);
  transition: color .24s var(--ease);
}
.page-about .tl__head:hover .tl__title,
.page-about .tl[open] .tl__title{ color: var(--gold-hi); }
.page-about .tl__year{
  font-family: var(--font-mono);
  font-size: .8125rem;
  letter-spacing: .08em;
  color: var(--stone);
  white-space: nowrap;
}
.page-about .tl__body{
  padding-top: 12px;
  max-width: 66ch;
}
.page-about .tl__body p{
  color: var(--stone);
}
.page-about .tl__body p:last-child{ margin-bottom: 0; }

@media (min-width: 760px){
  .page-about .timeline{ padding-left: 28px; }
  .page-about .tl::before{ left: -32px; }
  .page-about .tl__head{
    grid-template-columns: minmax(0, 1fr) var(--about-rail);
    align-items: baseline;
    column-gap: 20px;
  }
  .page-about .tl__year{ text-align: right; }
}

/* ---- 铭牌 ---- */
.page-about .plaques{
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}
.page-about .plaque{
  flex: 1 1 150px;
  min-width: 0;
  padding: 14px 16px;
  background:
    linear-gradient(135deg, rgba(255,255,255,.05) 0%, rgba(255,255,255,0) 46%),
    var(--char);
  border: 1px solid var(--line-soft);
  border-left: 3px solid var(--gold);
}
.page-about .plaque__num{
  font-family: var(--font-mono);
  font-size: 1.2rem;
  letter-spacing: .01em;
  color: var(--gold-hi);
  margin: 0 0 4px;
  line-height: 1.25;
}
.page-about .plaque__unit{
  font-size: .8125rem;
  color: var(--stone);
  margin-left: 4px;
}
.page-about .plaque__label{
  margin: 0;
  font-size: .8125rem;
  color: var(--stone);
}

/* ---- 04 团队 ---- */
.page-about .team-list{
  margin: clamp(18px, 2.6vw, 26px) 0 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line-hair);
}
.page-about .team-list__item{
  display: grid;
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line-hair);
}
.page-about .team-list dt{
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1rem;
  color: var(--gold);
  letter-spacing: .02em;
}
.page-about .team-list dd{
  margin: 0;
  font-size: .9375rem;
  line-height: 1.7;
  color: var(--stone);
}
.page-about .about-team__note{
  margin-top: clamp(18px, 2.6vw, 26px);
  border-left: 2px solid var(--line-deep);
  padding-left: 16px;
  color: var(--mist);
  font-size: .9375rem;
  line-height: 1.75;
}

@media (min-width: 620px){
  .page-about .team-list__item{
    grid-template-columns: 118px minmax(0, 1fr);
    gap: 18px;
    align-items: baseline;
  }
}

/* ---- 图片块 ---- */
.page-about .about-figure{
  margin: 0;
  min-width: 0;
  border: 1px solid var(--line-hair);
  background: var(--char);
  padding: 10px;
}
.page-about .about-figure img{
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  filter: saturate(.82) contrast(1.04);
}
.page-about .about-figure figcaption{
  margin-top: 10px;
  font-size: .8125rem;
  line-height: 1.6;
  color: var(--stone);
  padding: 0 2px 2px;
}

/* ---- 05 合作 ---- */
.page-about .partner-steps{
  list-style: none;
  margin: clamp(16px, 2.4vw, 24px) 0 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line-hair);
}
.page-about .partner-steps li{
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  padding: 13px 0;
  border-bottom: 1px solid var(--line-hair);
  font-size: .9375rem;
  line-height: 1.7;
  color: var(--stone);
}
.page-about .partner-steps__n{
  font-family: var(--font-mono);
  font-size: .8125rem;
  letter-spacing: .08em;
  color: var(--ochre);
}
.page-about .about-partners__link{
  margin-top: clamp(16px, 2.4vw, 24px);
  font-size: .9375rem;
  color: var(--stone);
}
.page-about .about-partners__link a{
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid var(--line-soft);
  padding-bottom: 1px;
}
.page-about .about-partners__link a:hover{
  color: var(--gold-hi);
  border-bottom-color: var(--gold-hi);
}

/* ---- 06 站点信息 ---- */
.page-about .about-meta__box{
  background: var(--char);
  border: 1px solid var(--line-hair);
  border-top: 2px solid var(--line-deep);
  padding: clamp(20px, 3.4vw, 38px);
}
.page-about .meta-grid{
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  margin-top: clamp(14px, 2vw, 22px);
  border-top: 1px solid var(--line-hair);
}
.page-about .meta-grid__cell{
  padding: 13px 0;
  border-bottom: 1px solid var(--line-hair);
  min-width: 0;
}
.page-about .meta-grid__k{
  font-size: .8125rem;
  color: var(--stone);
  margin: 0 0 4px;
}
.page-about .meta-grid__v{
  font-family: var(--font-mono);
  font-size: .875rem;
  letter-spacing: .02em;
  color: var(--mist);
  margin: 0;
  overflow-wrap: anywhere;
}
.page-about .about-meta__foot{
  margin: clamp(16px, 2.4vw, 24px) 0 0;
  font-size: .9375rem;
  color: var(--stone);
}
.page-about .about-meta__foot a{
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid var(--line-soft);
}
.page-about .about-meta__foot a:hover{
  color: var(--gold-hi);
  border-bottom-color: var(--gold-hi);
}

@media (min-width: 700px){
  .page-about .meta-grid{
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    column-gap: clamp(24px, 4vw, 48px);
  }
}

@media (min-width: 1180px){
  .page-about .about-hero__media{ margin-left: auto; }
}

@media (prefers-reduced-motion: reduce){
  .page-about .zone,
  .page-about .tl::before,
  .page-about .tl__title{ transition: none; }
}
<<<END>>>