.page-about{
  --about-line: rgba(42,71,89,.18);
  --about-line-dark: rgba(168,245,239,.22);
  --about-muted: rgba(246,241,231,.74);
  background: var(--warm);
  color: var(--ink);
  font-family: var(--font-body);
  overflow-x: clip;
}

/* 首屏 */
.page-about .about-hero{
  position: relative;
  padding: calc(var(--header-h) + 30px) 0 clamp(40px,6vw,72px);
  background:
    radial-gradient(130% 100% at 84% 0%, rgba(22,224,211,.20), transparent 62%),
    linear-gradient(165deg, var(--abyss) 0%, var(--hull) 58%, var(--abyss) 100%);
  color: var(--warm);
}
.page-about .about-hero .breadcrumb{
  margin-bottom: clamp(20px,3vw,34px);
  font-size: 12px;
}
.page-about .about-hero .crumb-list{
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  letter-spacing: .08em;
}
.page-about .about-hero .crumb-list a{
  color: var(--ice);
  text-decoration: none;
}
.page-about .about-hero .crumb-list a:hover{
  text-decoration: underline;
}
.page-about .about-hero .crumb-list li+li::before{
  content: "/";
  margin-right: 8px;
  color: rgba(168,245,239,.4);
}
.page-about .about-hero .crumb-list li[aria-current="page"]{
  color: var(--fog);
}

.page-about .about-hero__grid{
  display: grid;
  gap: 22px;
}
.page-about .about-vertical-note{
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .32em;
  color: var(--circuit);
}
.page-about .about-hero__aside .eyebrow{
  margin: 10px 0 0;
}
.page-about .display-title{
  margin: 0;
  max-width: 20ch;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px,5.4vw,60px);
  line-height: 1.1;
  letter-spacing: -.02em;
  color: var(--warm);
}
.page-about .about-lead{
  margin: 22px 0 0;
  max-width: 62ch;
  font-size: clamp(15px,1.6vw,17px);
  line-height: 1.9;
  color: rgba(246,241,231,.82);
}

.page-about .update-bar{
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  margin-top: clamp(24px,3vw,34px);
  padding: 12px 18px;
  border: 1px solid rgba(22,224,211,.28);
  border-radius: var(--radius-pill);
  background: rgba(7,26,43,.48);
}
.page-about .update-bar__label{
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--ice);
}
.page-about .update-bar__track{
  flex: 1 1 60px;
  height: 1px;
  min-width: 48px;
  background: linear-gradient(90deg, var(--circuit), rgba(22,224,211,.06));
}
.page-about .update-bar__time{
  font-size: 12px;
  color: var(--circuit);
  letter-spacing: .04em;
}

.page-about .about-visual{
  margin: clamp(30px,5vw,54px) 0 0;
  border: 1px solid var(--about-line-dark);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: rgba(7,26,43,.6);
}
.page-about .about-visual img,
.page-about .about-team__media img,
.page-about .about-honor__media img{
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}
.page-about .about-visual__cap{
  display: block;
  padding: 10px 16px;
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--fog);
  border-top: 1px solid var(--about-line-dark);
}

/* 主布局 */
.page-about .about-layout{
  padding-top: clamp(34px,5vw,64px);
  padding-bottom: clamp(44px,7vw,90px);
  display: grid;
  grid-template-columns: minmax(0,1fr);
  gap: 0;
}
.page-about .about-rail{
  margin-bottom: clamp(24px,3.5vw,40px);
}
.page-about .about-rail__list{
  display: flex;
  flex-wrap: nowrap;
  gap: 8px;
  margin: 12px 0 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}
.page-about .about-rail__link{
  display: block;
  padding: 7px 14px;
  border: 1px solid var(--about-line);
  border-radius: var(--radius-pill);
  white-space: nowrap;
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--fog);
  text-decoration: none;
  transition: color .18s var(--ease), border-color .18s var(--ease), background .18s var(--ease);
}
.page-about .about-rail__link:hover,
.page-about .about-rail__link:focus-visible{
  color: var(--ink);
  border-color: var(--circuit);
  background: rgba(22,224,211,.10);
}

.page-about .about-section{
  scroll-margin-top: calc(var(--header-h) + 28px);
}
.page-about .about-flow > .about-section + .about-section{
  margin-top: clamp(36px,6vw,76px);
}
.page-about .about-block{
  padding: clamp(24px,4.5vw,52px);
  border-radius: var(--radius-lg);
}
.page-about .about-block--dark{
  background: linear-gradient(155deg, var(--abyss) 0%, var(--hull) 100%);
  color: var(--warm);
}
.page-about .about-block--mist{
  background: var(--mist);
  color: var(--ink);
}
.page-about .section-title{
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px,3.4vw,34px);
  line-height: 1.24;
  letter-spacing: -.01em;
  color: var(--ink);
}
.page-about .about-block--dark .section-title{
  color: var(--warm);
}
.page-about .about-intro{
  margin: 18px 0 0;
  max-width: 68ch;
  font-size: 15px;
  line-height: 1.9;
  color: rgba(18,32,43,.78);
}
.page-about .about-block--dark .about-intro{
  color: var(--about-muted);
}

/* 品牌声明说明牌 */
.page-about .about-plates{
  display: grid;
  gap: 22px;
  margin-top: clamp(26px,4vw,40px);
}
.page-about .about-plates .plate{
  padding: 18px 0 0;
  border: 0;
  border-top: 1px solid var(--about-line);
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}
.page-about .about-plates .plate__index{
  display: block;
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--circuit);
}
.page-about .about-plates .plate__title{
  margin: 10px 0 8px;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--ink);
}
.page-about .about-plates .plate__text{
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: rgba(18,32,43,.74);
}

/* 时间轴 */
.page-about .about-yearjump{
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: clamp(24px,3.5vw,32px) 0 clamp(24px,3.5vw,34px);
}
.page-about .about-yearjump a{
  padding: 6px 15px;
  border: 1px solid var(--about-line-dark);
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--ice);
  text-decoration: none;
  transition: background .18s var(--ease), color .18s var(--ease), border-color .18s var(--ease);
}
.page-about .about-yearjump a:hover,
.page-about .about-yearjump a:focus-visible{
  background: rgba(22,224,211,.14);
  border-color: var(--circuit);
  color: var(--warm);
}

.page-about .about-timeline{
  position: relative;
  margin: 0;
  padding: 0 0 0 24px;
  list-style: none;
}
.page-about .about-timeline::before{
  content: "";
  position: absolute;
  left: 5px;
  top: 10px;
  bottom: 16px;
  width: 1px;
  background: linear-gradient(180deg, var(--circuit), rgba(22,224,211,.08));
}
.page-about .about-timeline__item{
  position: relative;
  padding-bottom: 30px;
}
.page-about .about-timeline__item:last-child{
  padding-bottom: 0;
}
.page-about .about-timeline__item::before{
  content: "";
  position: absolute;
  left: -24px;
  top: 8px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--abyss);
  border: 2px solid var(--circuit);
  box-shadow: 0 0 0 4px rgba(22,224,211,.10);
}
.page-about .about-timeline__year{
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(26px,4vw,38px);
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--circuit);
}
.page-about .about-timeline__title{
  margin: 8px 0 6px;
  font-family: var(--font-display);
  font-size: clamp(17px,2vw,20px);
  font-weight: 700;
  color: var(--warm);
}
.page-about .about-timeline__body p{
  margin: 0;
  font-size: 14.5px;
  line-height: 1.9;
  color: var(--about-muted);
}

/* 团队 */
.page-about .about-team{
  display: grid;
  gap: clamp(24px,3.5vw,40px);
  margin-top: clamp(22px,3vw,30px);
}
.page-about .about-team__media{
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--about-line);
}
.page-about .about-steps{
  display: grid;
  gap: 14px;
  margin: clamp(22px,3vw,30px) 0 0;
  padding: 0;
  list-style: none;
}
.page-about .about-step{
  padding: 16px 18px;
  border-radius: var(--radius-md);
  background: var(--mist);
}
.page-about .about-step__num{
  display: block;
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--signal);
}
.page-about .about-step__title{
  margin: 8px 0 6px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
}
.page-about .about-step p{
  margin: 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: rgba(18,32,43,.74);
}

/* 栏目与渠道 */
.page-about .about-archive{
  display: grid;
  gap: 0;
  margin: clamp(24px,3.5vw,34px) 0 0;
  padding: 0;
  list-style: none;
}
.page-about .about-archive li{
  display: grid;
  grid-template-columns: 34px minmax(0,1fr);
  gap: 2px 12px;
  padding: 13px 0;
  border-top: 1px solid rgba(18,32,43,.12);
}
.page-about .about-archive__no{
  grid-row: 1 / 3;
  font-size: 12px;
  letter-spacing: .14em;
  color: rgba(18,32,43,.44);
}
.page-about .about-archive__name{
  font-family: var(--font-display);
  font-size: 15.5px;
  font-weight: 700;
  color: var(--ink);
}
.page-about .about-archive__desc{
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: rgba(18,32,43,.72);
}

.page-about .about-channels{
  margin-top: clamp(24px,3.5vw,34px);
  padding-top: 20px;
  border-top: 1px solid rgba(18,32,43,.12);
}
.page-about .about-channels__label{
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .14em;
  color: rgba(18,32,43,.56);
}
.page-about .about-channels__list{
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-about .about-channels__list li{
  padding: 5px 13px;
  border-radius: var(--radius-pill);
  background: rgba(7,26,43,.08);
  font-size: 12.5px;
  color: var(--ink);
}

/* 荣誉 */
.page-about .about-honor{
  display: grid;
  gap: clamp(22px,3.5vw,36px);
  margin-top: clamp(22px,3vw,32px);
}
.page-about .about-honor__cards{
  display: grid;
  gap: 14px;
}
.page-about .about-honor__card{
  padding: 20px 22px;
  border: 1px solid var(--about-line-dark);
  border-radius: var(--radius-md);
  background: rgba(7,26,43,.34);
}
.page-about .about-honor__year{
  display: block;
  font-size: clamp(22px,3vw,28px);
  letter-spacing: -.01em;
  color: var(--signal);
}
.page-about .about-honor__name{
  margin: 10px 0 8px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--warm);
}
.page-about .about-honor__text{
  margin: 0;
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--about-muted);
}
.page-about .about-honor__media{
  margin: 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--about-line-dark);
}

/* 下一步 */
.page-about .about-next__links{
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: clamp(22px,3vw,30px) 0 0;
}
.page-about .about-contact{
  display: grid;
  gap: 12px;
  margin-top: clamp(26px,4vw,38px);
  padding-top: 22px;
  border-top: 1px solid rgba(18,32,43,.14);
}
.page-about .about-contact__item{
  display: flex;
  flex-wrap: wrap;
  gap: 4px 14px;
  align-items: baseline;
}
.page-about .about-contact__label{
  min-width: 76px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .14em;
  color: rgba(18,32,43,.52);
}
.page-about .about-contact__value{
  font-size: 14.5px;
  color: var(--ink);
  word-break: break-word;
}
.page-about .about-contact__note{
  margin: 10px 0 0;
  font-size: 13px;
  line-height: 1.8;
  color: rgba(18,32,43,.66);
}
.page-about .about-back{
  display: inline-block;
  margin-top: clamp(22px,3vw,30px);
  padding-bottom: 4px;
  border-bottom: 1px solid var(--signal);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--ink);
  text-decoration: none;
}
.page-about .about-back:hover,
.page-about .about-back:focus-visible{
  color: var(--signal);
}

/* 平板及以上 */
@media (min-width: 720px){
  .page-about .about-hero__grid{
    grid-template-columns: 120px minmax(0,1fr);
    gap: clamp(20px,3vw,36px);
  }
  .page-about .about-hero__aside{
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
    padding-top: 10px;
  }
  .page-about .about-vertical-note{
    writing-mode: vertical-rl;
    letter-spacing: .42em;
  }
  .page-about .about-plates{
    grid-template-columns: repeat(3, minmax(0,1fr));
    gap: 20px;
  }
  .page-about .about-steps{
    grid-template-columns: repeat(3, minmax(0,1fr));
    gap: 12px;
  }
  .page-about .about-archive{
    grid-template-columns: repeat(2, minmax(0,1fr));
    column-gap: clamp(20px,3vw,40px);
  }
}

@media (min-width: 960px){
  .page-about .about-layout{
    grid-template-columns: 178px minmax(0,1fr);
    gap: clamp(30px,4.5vw,68px);
    align-items: start;
  }
  .page-about .about-rail{
    position: sticky;
    top: calc(var(--header-h) + 28px);
    margin-bottom: 0;
  }
  .page-about .about-rail__list{
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
  }
  .page-about .about-rail__link{
    padding: 9px 0 9px 16px;
    border: 0;
    border-left: 1px solid var(--about-line);
    border-radius: 0;
    white-space: normal;
    font-size: 12.5px;
    letter-spacing: .08em;
  }
  .page-about .about-rail__link:hover,
  .page-about .about-rail__link:focus-visible{
    background: transparent;
    color: var(--ink);
    border-left-color: var(--circuit);
  }
  .page-about .about-timeline{
    padding-left: 30px;
  }
  .page-about .about-timeline::before{
    left: 6px;
  }
  .page-about .about-timeline__item{
    display: grid;
    grid-template-columns: 118px minmax(0,1fr);
    gap: clamp(16px,2.5vw,28px);
    padding-bottom: 38px;
  }
  .page-about .about-timeline__item::before{
    left: -30px;
    top: 12px;
  }
  .page-about .about-timeline__year{
    font-size: clamp(34px,3.6vw,46px);
  }
  .page-about .about-timeline__title{
    margin-top: 0;
  }
  .page-about .about-team{
    grid-template-columns: minmax(0,5fr) minmax(0,7fr);
    align-items: start;
    gap: clamp(28px,4vw,52px);
  }
  .page-about .about-honor{
    grid-template-columns: minmax(0,7fr) minmax(0,5fr);
    align-items: start;
  }
  .page-about .about-honor__media{
    margin-top: 2px;
  }
  .page-about .about-block{
    border-radius: var(--radius-xl);
  }
}

@media (prefers-reduced-motion: reduce){
  .page-about .about-rail__link,
  .page-about .about-yearjump a{
    transition: none;
  }
}
<<<END>>>