.page-about{
  position:relative;
  padding-top:clamp(4.5rem,9vw,7rem);
  padding-bottom:clamp(3rem,7vw,5rem);
  background:
    radial-gradient(110% 55% at 88% -8%, rgba(216,168,78,.12), transparent 62%),
    radial-gradient(85% 45% at -5% 28%, rgba(68,224,207,.07), transparent 60%);
  color:var(--cream);
  overflow-x:clip;
}
.page-about .breadcrumbs{
  margin-bottom:clamp(1.5rem,4vw,2.5rem);
}
.page-about a:focus-visible,
.page-about summary:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:3px;
  border-radius:var(--r-sm);
}

/* 首屏 */
.page-about .about-hero{
  display:grid;
  gap:clamp(2rem,5vw,3.5rem);
  grid-template-columns:minmax(0,1fr);
  align-items:start;
}
.page-about .hero-copy{max-width:44rem;}
.page-about .hero-copy .eyebrow{margin-bottom:1rem;}
.page-about .hero-copy h1{
  font-size:clamp(2.15rem,6.2vw,4.35rem);
  line-height:1.04;
  letter-spacing:-.02em;
  margin:0 0 1.1rem;
  color:var(--cream);
  text-shadow:0 0 26px rgba(216,168,78,.28);
}
.page-about .hero-copy .lede{
  font-size:clamp(1rem,1.9vw,1.12rem);
  line-height:1.75;
  color:var(--mist);
  max-width:40rem;
}
.page-about .hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:.75rem;
  margin-top:1.75rem;
}
.page-about .hero-visual{
  display:grid;
  gap:1rem;
  min-width:0;
}
.page-about .hero-visual .media-frame{
  margin:0;
}
.page-about .media-frame img{
  display:block;
  width:100%;
  height:auto;
  max-width:100%;
  object-fit:cover;
  border-radius:inherit;
}

/* 坐标索引 */
.page-about .coord-index{
  display:grid;
  gap:.5rem;
  grid-template-columns:minmax(0,1fr);
}
.page-about .coord-item{
  display:grid;
  grid-template-columns:auto minmax(0,1fr);
  grid-template-areas:
    "no label"
    "no hint";
  column-gap:.9rem;
  align-items:center;
  padding:.7rem .95rem;
  border:1px solid var(--line-soft);
  border-radius:var(--r-md);
  background:var(--panel);
  color:var(--cream);
  text-decoration:none;
  transition:border-color .22s var(--ease),transform .22s var(--ease),background .22s var(--ease);
}
.page-about .coord-item:hover{
  border-color:var(--line-gold);
  background:var(--panel-hi);
  transform:translateY(-2px);
}
.page-about .coord-no{
  grid-area:no;
  font-family:var(--font-mono);
  font-size:.82rem;
  letter-spacing:.06em;
  color:var(--gold);
}
.page-about .coord-label{
  grid-area:label;
  font-weight:700;
  font-size:.95rem;
  letter-spacing:.01em;
}
.page-about .coord-hint{
  grid-area:hint;
  font-size:.8rem;
  color:var(--mist);
  font-family:var(--font-mono);
}

/* 章节骨架 */
.page-about .section{
  margin-top:clamp(3rem,7vw,5rem);
}
.page-about .chapter-head{
  display:grid;
  gap:.75rem 2rem;
  grid-template-columns:minmax(0,1fr);
  align-items:start;
  margin-bottom:clamp(1.5rem,4vw,2.5rem);
}
.page-about .chapter-no{
  margin:0;
  font-family:var(--font-mono);
  font-weight:800;
  font-size:clamp(2.6rem,7vw,4.6rem);
  line-height:.9;
  color:var(--gold);
  opacity:.85;
  text-shadow:0 0 30px rgba(216,168,78,.35);
}
.page-about .chapter-body h2{
  margin:0 0 .8rem;
  font-size:clamp(1.5rem,3.6vw,2.3rem);
  line-height:1.18;
  letter-spacing:-.015em;
  color:var(--cream);
}
.page-about .chapter-body .lede{
  margin:0;
  color:var(--mist);
  line-height:1.75;
  max-width:44rem;
}

/* 内容主线 */
.page-about .route-figure{
  margin:0 0 clamp(1.5rem,3vw,2rem);
}
.page-about .fig-cap{
  margin-top:.7rem;
  font-size:.82rem;
  font-family:var(--font-mono);
  color:var(--mist);
  line-height:1.6;
}
.page-about .route-grid{
  display:grid;
  gap:1rem;
  grid-template-columns:minmax(0,1fr);
}
.page-about .route-card{
  padding:1.15rem 1.2rem 1.3rem;
  border:1px solid var(--line-soft);
  border-left:3px solid var(--line-gold);
  border-radius:var(--r-md);
  background:var(--panel);
  display:flex;
  flex-direction:column;
  gap:.55rem;
  transition:transform .22s var(--ease),border-color .22s var(--ease);
}
.page-about .route-card:nth-child(2){border-left-color:var(--cyan);}
.page-about .route-card:nth-child(3){border-left-color:var(--green);}
.page-about .route-card:nth-child(4){border-left-color:var(--amber);}
.page-about .route-card:hover{
  transform:translateY(-3px);
  border-color:var(--line-mid);
}
.page-about .route-card .coord{
  margin:0;
  font-family:var(--font-mono);
  font-size:.75rem;
  letter-spacing:.08em;
  color:var(--gold);
}
.page-about .route-card h3{
  margin:0;
  font-size:1.08rem;
  letter-spacing:-.01em;
  color:var(--cream);
}
.page-about .route-card p{
  margin:0;
  font-size:.92rem;
  line-height:1.72;
  color:var(--mist);
}
.page-about .route-link{
  margin-top:auto;
  padding-top:.55rem;
  font-size:.86rem;
  font-weight:700;
  color:var(--cyan);
  text-decoration:none;
  width:fit-content;
}
.page-about a.route-link:hover{text-decoration:underline;}
.page-about .next-card .route-link{color:var(--gold);}

/* 时间线 */
.page-about .timeline{
  display:grid;
  gap:1rem;
  grid-template-columns:minmax(0,1fr);
}
.page-about .tl-node{
  position:relative;
  padding:.9rem 1rem 1rem;
  border:1px solid var(--line-soft);
  border-radius:var(--r-md);
  background:var(--panel);
  transition:border-color .22s var(--ease),background .22s var(--ease);
}
.page-about .tl-node::before{
  content:"";
  position:absolute;
  top:-5px;
  left:1rem;
  width:9px;
  height:9px;
  border-radius:50%;
  background:var(--gold);
  box-shadow:0 0 14px rgba(216,168,78,.75);
}
.page-about .tl-node:hover{
  border-color:var(--line-gold);
  background:var(--panel-hi);
}
.page-about .tl-node summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  flex-direction:column;
  gap:.25rem;
}
.page-about .tl-node summary::-webkit-details-marker{display:none;}
.page-about .tl-tag{
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.1em;
  color:var(--amber);
}
.page-about .tl-title{
  font-weight:700;
  font-size:1rem;
  color:var(--cream);
}
.page-about .tl-node[open] .tl-title{color:var(--gold);}
.page-about .tl-body{
  margin-top:.6rem;
  padding-top:.6rem;
  border-top:1px solid var(--line-soft);
}
.page-about .tl-body p{
  margin:0;
  font-size:.9rem;
  line-height:1.72;
  color:var(--mist);
}

/* 团队 */
.page-about .team-grid{
  display:grid;
  gap:clamp(1.5rem,4vw,2.5rem);
  grid-template-columns:minmax(0,1fr);
  align-items:start;
}
.page-about .team-grid .media-frame{
  margin:0;
}
.page-about .team-copy{min-width:0;}
.page-about .flow-list{
  list-style:none;
  margin:0 0 1.25rem;
  padding:0;
  display:grid;
  gap:1rem;
}
.page-about .flow-step{
  display:grid;
  grid-template-columns:auto minmax(0,1fr);
  gap:.9rem;
  align-items:start;
  padding-bottom:1rem;
  border-bottom:1px solid var(--line-soft);
}
.page-about .flow-step:last-child{border-bottom:0;padding-bottom:0;}
.page-about .flow-no{
  display:inline-grid;
  place-items:center;
  width:2rem;
  height:2rem;
  border-radius:50%;
  border:1px solid var(--line-gold);
  background:rgba(216,168,78,.1);
  color:var(--gold);
  font-family:var(--font-mono);
  font-size:.85rem;
  font-weight:700;
}
.page-about .flow-step h3{
  margin:0 0 .35rem;
  font-size:1rem;
  color:var(--cream);
}
.page-about .flow-step p{
  margin:0;
  font-size:.9rem;
  line-height:1.72;
  color:var(--mist);
}
.page-about .team-note{
  margin:0;
  padding:.85rem 1rem;
  border-radius:var(--r-sm);
  border:1px dashed var(--line-mid);
  font-size:.85rem;
  line-height:1.7;
  color:var(--mist);
}

/* 合作 */
.page-about .partner-grid{
  display:grid;
  gap:1rem;
  grid-template-columns:minmax(0,1fr);
}
.page-about .partner-card{
  padding:1.1rem 1.15rem;
  border-radius:var(--r-md);
  border:1px solid var(--line-soft);
  background:linear-gradient(150deg,var(--panel-hi),var(--panel));
  transition:border-color .22s var(--ease),transform .22s var(--ease);
}
.page-about .partner-card:hover{
  border-color:var(--line-gold);
  transform:translateY(-3px);
}
.page-about .partner-card .coord{
  margin:0 0 .45rem;
  font-family:var(--font-mono);
  font-size:.74rem;
  letter-spacing:.1em;
  color:var(--cyan);
}
.page-about .partner-card h3{
  margin:0 0 .45rem;
  font-size:1.02rem;
  color:var(--cream);
}
.page-about .partner-card p{
  margin:0;
  font-size:.9rem;
  line-height:1.72;
  color:var(--mist);
}
.page-about .partner-cta{
  margin-top:1.5rem;
  display:flex;
  flex-wrap:wrap;
  gap:1rem;
  align-items:center;
  justify-content:space-between;
  padding:1rem 1.15rem;
  border-radius:var(--r-lg);
  border:1px solid var(--line-gold);
  background:rgba(216,168,78,.07);
}
.page-about .partner-cta p{
  margin:0;
  font-size:.9rem;
  line-height:1.7;
  color:var(--cream);
  max-width:36rem;
}

/* 规模与荣誉 */
.page-about .stat-board{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:1px;
  background:var(--line-soft);
  border:1px solid var(--line-soft);
  border-radius:var(--r-lg);
  overflow:hidden;
}
.page-about .stat{
  background:var(--panel);
  padding:clamp(1rem,3vw,1.5rem);
}
.page-about .stat-num{
  margin:0 0 .3rem;
  font-family:var(--font-mono);
  font-size:clamp(1.5rem,4vw,2.1rem);
  font-weight:700;
  color:var(--gold);
  letter-spacing:-.02em;
  line-height:1;
}
.page-about .stat-label{
  margin:0;
  font-size:.82rem;
  letter-spacing:.03em;
  color:var(--mist);
}
.page-about .honor-row{
  display:grid;
  gap:1rem;
  grid-template-columns:minmax(0,1fr);
  margin-top:1.25rem;
}
.page-about .honor-item{
  padding:1rem 1.1rem;
  border-radius:var(--r-md);
  border:1px solid var(--line-soft);
  background:var(--panel);
}
.page-about .honor-item .coord{
  margin:0 0 .4rem;
  font-family:var(--font-mono);
  font-size:.8rem;
  letter-spacing:.04em;
  color:var(--green);
}
.page-about .honor-item p:last-child{
  margin:0;
  font-size:.88rem;
  line-height:1.7;
  color:var(--mist);
}
.page-about .scale-note{
  margin:1.25rem 0 0;
  padding-left:1rem;
  border-left:2px solid var(--line-gold);
  font-size:.9rem;
  line-height:1.75;
  color:var(--mist);
}

/* 下一步 */
.page-about .next-grid{
  display:grid;
  gap:1rem;
  grid-template-columns:minmax(0,1fr);
}
.page-about .next-card{
  display:flex;
  flex-direction:column;
  gap:.5rem;
  padding:1.2rem 1.25rem 1.35rem;
  border-radius:var(--r-lg);
  border:1px solid var(--line-soft);
  background:var(--panel);
  text-decoration:none;
  color:var(--cream);
  transition:border-color .22s var(--ease),transform .22s var(--ease),background .22s var(--ease);
}
.page-about .next-card:hover{
  border-color:var(--line-gold);
  background:var(--panel-hi);
  transform:translateY(-4px);
}
.page-about .next-kicker{
  font-family:var(--font-mono);
  font-size:.74rem;
  letter-spacing:.1em;
  color:var(--amber);
}
.page-about .next-card h3{
  margin:0;
  font-size:1.1rem;
  letter-spacing:-.01em;
}
.page-about .next-card p{
  margin:0;
  font-size:.9rem;
  line-height:1.72;
  color:var(--mist);
}

@media (min-width:640px){
  .page-about .coord-index{grid-template-columns:repeat(2,minmax(0,1fr));}
  .page-about .route-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .page-about .partner-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .page-about .horon-row{grid-template-columns:repeat(2,minmax(0,1fr));}
  .page-about .honor-row{grid-template-columns:repeat(2,minmax(0,1fr));}
  .page-about .next-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}

@media (min-width:900px){
  .page-about .about-hero{
    grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);
    align-items:center;
  }
  .page-about .chapter-head{
    grid-template-columns:minmax(120px,180px) minmax(0,1fr);
    align-items:start;
  }
  .page-about .chapter-no{
    font-size:clamp(3.4rem,6vw,5.4rem);
    padding-top:.15rem;
  }
  .page-about .timeline{
    grid-template-columns:repeat(5,minmax(0,1fr));
    align-items:start;
    border-top:1px dashed var(--line-mid);
    padding-top:1.4rem;
  }
  .page-about .tl-node{padding:.85rem .9rem .95rem;}
  .page-about .team-grid{
    grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);
    align-items:center;
  }
  .page-about .stat-board{grid-template-columns:repeat(4,minmax(0,1fr));}
  .page-about .next-grid{grid-template-columns:repeat(3,minmax(0,1fr));}
  .page-about .partner-cta{padding:1.15rem 1.4rem;}
}

@media (min-width:1120px){
  .page-about .route-grid{
    grid-template-columns:repeat(4,minmax(0,1fr));
  }
  .page-about .route-card{padding:1.25rem 1.15rem 1.35rem;}
}

@media (prefers-reduced-motion:reduce){
  .page-about .coord-item,
  .page-about .route-card,
  .page-about .partner-card,
  .page-about .next-card,
  .page-about .tl-node{
    transition:none;
  }
  .page-about .coord-item:hover,
  .page-about .route-card:hover,
  .page-about .partner-card:hover,
  .page-about .next-card:hover{
    transform:none;
  }
}
<<<PAGE_CSS_END>>>