.page-about{
  background: var(--mk-navy);
  color: var(--mk-paper);
  font-family: var(--mk-body);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero{
  position: relative;
  padding: 44px 0 64px;
  background:
    radial-gradient(680px 420px at 8% -12%, rgba(31,166,166,.20), transparent 68%),
    radial-gradient(560px 340px at 94% -6%, rgba(230,79,160,.13), transparent 66%);
}

.page-about .mk-breadcrumb{
  margin-bottom: 28px;
}

.page-about .about-hero__grid{
  display: grid;
  gap: 32px;
  align-items: start;
}

.page-about .about-hero__figure{
  margin: 0;
}

.page-about .about-hero__figure .mk-figure__media{
  aspect-ratio: 5 / 7;
}

.page-about .mk-figure__media img{
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-about .about-hero__body h1{
  margin: 12px 0 18px;
  font-family: var(--mk-display);
  font-size: 38px;
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.01em;
  text-wrap: balance;
}

.page-about .about-hero__body p{
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.75;
}

.page-about .about-hero__text{
  margin: 16px 0 0;
  color: var(--mk-muted);
}

.page-about .about-stats{
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin: 28px 0 0;
  padding: 22px 0 0;
  list-style: none;
  border-top: 1px solid var(--mk-line);
}

.page-about .about-stats__num{
  display: block;
  font-family: var(--mk-mono);
  font-size: 24px;
  font-weight: 600;
  line-height: 1.1;
  color: var(--mk-gold);
}

.page-about .about-stats__label{
  display: block;
  margin-top: 6px;
  font-size: 12px;
  line-height: 1.5;
  color: var(--mk-muted);
}

.page-about .about-hero__actions{
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

/* ---------- 正文骨架 ---------- */
.page-about .about-body{
  padding: 8px 0 72px;
}

.page-about .about-body__grid{
  display: grid;
  gap: 36px;
  align-items: start;
}

/* ---------- 侧边索引 / 垂直时间线 ---------- */
.page-about .about-rail{
  padding: 20px 22px;
  border-left: 2px solid var(--mk-line);
  background: linear-gradient(180deg, rgba(17,28,61,.85), rgba(11,18,38,0));
}

.page-about .about-rail__head{
  margin: 0 0 12px;
  font-family: var(--mk-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--mk-teal);
}

.page-about .about-rail__years{
  position: relative;
  margin: 0 0 26px;
  padding: 0 0 0 20px;
  list-style: none;
}

.page-about .about-rail__years::before{
  content: "";
  position: absolute;
  left: 4px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(180deg, var(--mk-teal), var(--mk-magenta) 70%, transparent);
}

.page-about .about-rail__year a{
  position: relative;
  display: block;
  padding: 7px 0;
  font-family: var(--mk-mono);
  font-size: 14px;
  color: var(--mk-muted);
  text-decoration: none;
  transition: color .18s var(--mk-ease);
}

.page-about .about-rail__year a::before{
  content: "";
  position: absolute;
  left: -20px;
  top: 50%;
  width: 9px;
  height: 9px;
  margin-top: -5px;
  border-radius: 50%;
  border: 1px solid var(--mk-line);
  background: var(--mk-navy);
  transition: background .18s var(--mk-ease), border-color .18s var(--mk-ease);
}

.page-about .about-rail__year a:hover,
.page-about .about-rail__year a:focus-visible{
  color: var(--mk-cyan);
}

.page-about .about-rail__year a:hover::before,
.page-about .about-rail__year a:focus-visible::before{
  background: var(--mk-cyan);
  border-color: var(--mk-cyan);
}

.page-about .about-rail__links{
  margin: 0 0 22px;
  padding: 0;
  list-style: none;
}

.page-about .about-rail__links a{
  display: block;
  padding: 6px 0;
  font-size: 14px;
  color: var(--mk-paper);
  text-decoration: none;
  border-bottom: 1px dashed rgba(42,58,90,.9);
  transition: color .18s var(--mk-ease), border-color .18s var(--mk-ease);
}

.page-about .about-rail__links a:hover,
.page-about .about-rail__links a:focus-visible{
  color: var(--mk-gold);
  border-color: var(--mk-gold);
}

.page-about .about-rail__top{
  display: inline-block;
  font-family: var(--mk-mono);
  font-size: 12px;
  color: var(--mk-cyan);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-about .about-rail__top:hover,
.page-about .about-rail__top:focus-visible{
  border-bottom-color: var(--mk-cyan);
}

/* ---------- 章节通用 ---------- */
.page-about .about-sec{
  padding-bottom: 64px;
  scroll-margin-top: 110px;
}

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

.page-about .about-sec__title{
  margin: 10px 0 14px;
  font-family: var(--mk-display);
  font-size: 26px;
  font-weight: 700;
  line-height: 1.16;
  letter-spacing: -0.01em;
  text-wrap: balance;
}

.page-about .about-sec__lede{
  max-width: 66ch;
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mk-muted);
}

/* ---------- 时间线 ---------- */
.page-about .about-tl{
  display: grid;
  gap: 18px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-tl__item{
  scroll-margin-top: 110px;
}

.page-about .about-tl__card{
  padding: 20px 20px 22px;
  border-left: 3px solid var(--mk-teal);
  transition: transform .2s var(--mk-ease), border-color .2s var(--mk-ease);
}

.page-about .about-tl__card:hover{
  transform: translateX(3px);
}

.page-about .about-tl__item:nth-child(3n+2) .about-tl__card{
  border-left-color: var(--mk-gold);
}

.page-about .about-tl__item:nth-child(3n) .about-tl__card{
  border-left-color: var(--mk-magenta);
}

.page-about .about-tl__metaline{
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}

.page-about .about-tl__yr{
  font-family: var(--mk-mono);
  font-size: 28px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: .02em;
  color: var(--mk-cyan);
}

.page-about .about-tl__card h3{
  margin: 0 0 10px;
}

.page-about .about-tl__card p{
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--mk-muted);
}

.page-about .about-tl__item .mk-figure{
  margin: 4px 0;
}

/* ---------- 团队 ---------- */
.page-about .about-team{
  display: grid;
  gap: 28px;
  margin-top: 28px;
}

.page-about .about-team__chart{
  display: grid;
  gap: 20px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-team__row{
  padding: 16px 18px;
  border: 1px solid var(--mk-line);
  border-radius: 0 10px 10px 0;
  background: rgba(17,28,61,.6);
  transition: border-color .2s var(--mk-ease), background .2s var(--mk-ease);
}

.page-about .about-team__row:hover{
  border-color: var(--mk-teal);
  background: rgba(17,28,61,.95);
}

.page-about .about-team__meta{
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}

.page-about .about-team__name{
  font-size: 15px;
  font-weight: 500;
  color: var(--mk-paper);
}

.page-about .about-team__num{
  font-family: var(--mk-mono);
  font-size: 18px;
  font-weight: 600;
  color: var(--mk-gold);
}

.page-about .about-team__track{
  height: 8px;
  margin: 10px 0 10px;
  background: rgba(42,58,90,.85);
  border-radius: 0 6px 6px 0;
  overflow: hidden;
}

.page-about .about-team__bar{
  display: block;
  height: 100%;
  border-radius: 0 6px 6px 0;
  background: linear-gradient(90deg, var(--mk-teal), var(--mk-cyan));
  transition: filter .2s var(--mk-ease);
}

.page-about .about-team__row:hover .about-team__bar{
  filter: brightness(1.2);
}

.page-about .about-team__bar--content{ width: 100%; }
.page-about .about-team__bar--tech{ width: 50%; background: linear-gradient(90deg, var(--mk-gold), var(--mk-gold-soft)); }
.page-about .about-team__bar--service{ width: 66.7%; background: linear-gradient(90deg, var(--mk-magenta), var(--mk-magenta-soft)); }

.page-about .about-team__duty{
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--mk-muted);
  transition: color .2s var(--mk-ease);
}

.page-about .about-team__row:hover .about-team__duty{
  color: var(--mk-paper);
}

.page-about .about-team__figure{
  margin: 0;
}

/* ---------- 服务范围 ---------- */
.page-about .about-reach{
  display: grid;
  gap: 14px;
  margin-top: 26px;
}

.page-about .about-reach__panel{
  padding: 20px 18px;
  border-top: 3px solid var(--mk-teal);
}

.page-about .about-reach__panel--teal{
  border-top-color: var(--mk-gold);
}

.page-about .about-reach__panel--magenta{
  border-top-color: var(--mk-magenta);
}

.page-about .about-reach__num{
  display: block;
  font-family: var(--mk-mono);
  font-size: 30px;
  font-weight: 600;
  line-height: 1.1;
  color: var(--mk-cyan);
}

.page-about .about-reach__label{
  display: block;
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--mk-muted);
}

/* ---------- 伙伴与荣誉 ---------- */
.page-about .about-honors{
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-honors__item{
  padding: 16px 14px;
  border: 1px solid rgba(232,180,90,.38);
  border-radius: 2px;
  background: linear-gradient(160deg, rgba(232,180,90,.10), rgba(17,28,61,.55));
}

.page-about .about-honors__num{
  display: block;
  font-family: var(--mk-mono);
  font-size: 26px;
  font-weight: 600;
  line-height: 1.1;
  color: var(--mk-gold-soft);
}

.page-about .about-honors__label{
  display: block;
  margin-top: 8px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--mk-muted);
}

.page-about .about-honors__note{
  margin: 18px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--mk-line);
  font-size: 14px;
  line-height: 1.75;
  color: var(--mk-muted);
}

/* ---------- 接下来 ---------- */
.page-about .about-next{
  padding: 26px 20px 28px;
  border: 1px solid var(--mk-line);
  background:
    radial-gradient(420px 220px at 100% 0%, rgba(230,79,160,.16), transparent 70%),
    rgba(17,28,61,.7);
  clip-path: polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 20px 100%, 0 calc(100% - 20px));
}

.page-about .about-next__links{
  display: grid;
  gap: 10px;
  margin-top: 22px;
}

.page-about .about-next__link{
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  text-decoration: none;
  background: rgba(11,18,38,.7);
  border-left: 2px solid var(--mk-teal);
  transition: background .2s var(--mk-ease), border-color .2s var(--mk-ease), transform .2s var(--mk-ease);
}

.page-about .about-next__link:hover,
.page-about .about-next__link:focus-visible{
  background: rgba(31,166,166,.16);
  border-left-color: var(--mk-magenta);
  transform: translateX(4px);
}

.page-about .about-next__idx{
  font-family: var(--mk-mono);
  font-size: 12px;
  color: var(--mk-cyan);
}

.page-about .about-next__txt{
  font-size: 15px;
  color: var(--mk-paper);
}

/* ---------- 桌面布局 ---------- */
@media (min-width: 720px){
  .page-about .about-hero{
    padding: 56px 0 80px;
  }

  .page-about .about-hero__body h1{
    font-size: 52px;
  }

  .page-about .about-hero__body p{
    font-size: 16px;
  }

  .page-about .about-stats__num{
    font-size: 28px;
  }

  .page-about .about-sec__title{
    font-size: 34px;
  }

  .page-about .about-team{
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    gap: 32px;
    align-items: start;
  }

  .page-about .about-reach{
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }

  .page-about .about-honors{
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
  }

  .page-about .about-next__links{
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
  }

  .page-about .about-next{
    padding: 34px 32px 36px;
  }
}

@media (min-width: 960px){
  .page-about .about-hero__grid{
    grid-template-columns: minmax(0, 380px) minmax(0, 1fr);
    gap: 56px;
  }

  .page-about .about-hero__body h1{
    font-size: 58px;
  }

  .page-about .about-rail__inner{
    position: sticky;
    top: 104px;
  }

  .page-about .about-tl{
    gap: 20px;
  }

  .page-about .about-tl__card{
    padding: 24px 26px 26px;
  }

  .page-about .about-tl__yr{
    font-size: 34px;
  }
}

@media (min-width: 1024px){
  .page-about .about-body{
    padding: 16px 0 96px;
  }

  .page-about .about-body__grid{
    grid-template-columns: 232px minmax(0, 1fr);
    gap: 56px;
  }

  .page-about .about-sec{
    padding-bottom: 76px;
  }
}

@media (prefers-reduced-motion: reduce){
  .page-about .about-tl__card,
  .page-about .about-team__row,
  .page-about .about-team__bar,
  .page-about .about-next__link{
    transition: none;
  }

  .page-about .about-tl__card:hover,
  .page-about .about-next__link:hover,
  .page-about .about-next__link:focus-visible{
    transform: none;
  }
}
<<<END>>>