.page-about{
  --about-rule:rgba(22,71,58,.85);
  --about-tape:rgba(198,255,74,.16);
  --about-card:rgba(14,46,37,.78);
  --about-ink-soft:rgba(244,240,230,.84);
  counter-reset:sec;
  background:var(--ink);
  color:var(--paper);
  padding:0 0 72px;
  overflow-x:hidden;
}
.page-about .breadcrumb{padding:20px 0 0;}
.page-about .breadcrumb-list{display:flex;flex-wrap:wrap;gap:8px;list-style:none;margin:0;padding:0;font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;color:var(--mist);}
.page-about .breadcrumb-link{color:var(--mist);text-decoration:none;border-bottom:1px solid transparent;transition:color .18s var(--ease),border-color .18s var(--ease);}
.page-about .breadcrumb-link:hover,.page-about .breadcrumb-link:focus-visible{color:var(--lime);border-bottom-color:var(--lime);}
.page-about .breadcrumb-item+.breadcrumb-item::before{content:"/";margin-right:8px;color:var(--board);}
.page-about .breadcrumb-current{color:var(--lime);}

/* 封面 */
.page-about .about-cover{padding:26px 0 4px;}
.page-about .cover-grid{display:grid;gap:28px;align-items:start;}
.page-about .cover-copy{
  position:relative;
  background:linear-gradient(155deg,var(--moss),rgba(14,46,37,.5));
  border:1px solid var(--about-rule);
  border-radius:var(--radius);
  padding:26px 20px 24px;
  box-shadow:12px 12px 0 -2px rgba(4,18,15,.85),0 0 0 1px rgba(198,255,74,.06);
}
.page-about .cover-copy::before{
  content:"";
  position:absolute;
  top:-10px;left:24px;
  width:96px;height:20px;
  background:var(--about-tape);
  border:1px solid rgba(198,255,74,.34);
  transform:rotate(-2.5deg);
}
.page-about .page-title{
  margin:12px 0 0;
  font-family:var(--font-display);
  font-weight:800;
  font-size:clamp(26px,6.2vw,42px);
  line-height:1.16;
  letter-spacing:-.01em;
  color:var(--paper);
}
.page-about .title-accent{color:var(--lime);}
.page-about .cover-lead{
  margin:14px 0 0;
  font-size:15.5px;
  line-height:1.8;
  color:var(--about-ink-soft);
}
.page-about .cover-facts{
  list-style:none;
  margin:22px 0 0;
  padding:0;
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:12px 16px;
}
.page-about .fact{border-top:1px solid var(--about-rule);padding-top:10px;min-width:0;}
.page-about .fact-num{
  display:block;
  font-family:var(--font-mono);
  font-size:20px;
  font-weight:700;
  color:var(--lime);
  line-height:1.2;
  letter-spacing:.02em;
}
.page-about .fact-label{display:block;margin-top:4px;font-size:12.5px;color:var(--mist);}
.page-about .cover-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}

.page-about .cover-figure{position:relative;margin:0;min-width:0;}
.page-about .cover-stamp{
  position:absolute;
  top:10px;right:10px;
  z-index:2;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  color:var(--ink);
  background:var(--lime);
  padding:5px 8px;
  transform:rotate(-3deg);
}

.page-about .media-frame{
  border:1px solid var(--board);
  box-shadow:8px 8px 0 -2px rgba(4,18,15,.9);
  overflow:hidden;
  background:var(--moss);
  max-width:100%;
}
.page-about .media-frame img{display:block;width:100%;height:auto;max-width:100%;object-fit:cover;}
.page-about .media-caption{
  margin-top:8px;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.04em;
  color:var(--mist);
}

/* 布局与左侧目录 */
.page-about .about-layout{display:grid;gap:30px;padding-top:40px;}
.page-about .about-index{
  background:var(--moss);
  border:1px solid var(--about-rule);
  padding:16px 14px;
  align-self:start;
  min-width:0;
}
.page-about .index-title{
  margin:0 0 10px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.18em;
  color:var(--mist);
}
.page-about .index-list{list-style:none;margin:0;padding:0;display:grid;gap:2px;}
.page-about .index-link{
  display:flex;
  gap:10px;
  align-items:baseline;
  padding:10px 8px 10px 0;
  min-height:44px;
  color:var(--paper);
  text-decoration:none;
  font-size:14px;
  border-left:2px solid transparent;
  transition:color .18s var(--ease),border-color .18s var(--ease),background .18s var(--ease);
}
.page-about .index-link:hover,.page-about .index-link:focus-visible{
  color:var(--lime);
  border-left-color:var(--lime);
  background:var(--lime-soft);
}
.page-about .index-num{font-family:var(--font-mono);font-size:11px;color:var(--lime);letter-spacing:.06em;}

/* 章节 */
.page-about .about-body{display:grid;gap:44px;min-width:0;}
.page-about .about-section{counter-increment:sec;min-width:0;scroll-margin-top:16px;}
.page-about .sec-head{
  display:grid;
  gap:10px;
  border-top:2px solid var(--board);
  padding-top:16px;
  margin-bottom:18px;
}
.page-about .sec-num{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.2em;
  color:var(--orange);
}
.page-about .sec-num::before{content:counter(sec,decimal-leading-zero);}
.page-about .sec-title{
  margin:0;
  font-family:var(--font-display);
  font-size:clamp(20px,4.2vw,27px);
  font-weight:800;
  line-height:1.32;
  color:var(--paper);
}
.page-about .sec-lead{margin:0;font-size:14.5px;line-height:1.8;color:var(--mist);}
.page-about .about-p{margin:0 0 12px;font-size:15px;line-height:1.82;color:var(--about-ink-soft);}
.page-about .about-p:last-child{margin-bottom:0;}
.page-about .inline-link{color:var(--lime);text-decoration:none;border-bottom:1px solid rgba(198,255,74,.45);transition:border-color .18s var(--ease);}
.page-about .inline-link:hover,.page-about .inline-link:focus-visible{border-bottom-color:var(--lime);}

/* 时间线 */
.page-about .tl-figure{margin:0 0 22px;}
.page-about .timeline{list-style:none;margin:0;padding:0;position:relative;}
.page-about .timeline::before{
  content:"";
  position:absolute;
  left:9px;top:8px;bottom:14px;
  width:2px;
  background:linear-gradient(180deg,var(--lime),rgba(198,255,74,.35) 55%,rgba(22,71,58,.2));
}
.page-about .tl-item{position:relative;padding-left:38px;margin-bottom:18px;min-width:0;}
.page-about .tl-item::before{
  content:"";
  position:absolute;
  left:2px;top:9px;
  width:14px;height:14px;
  background:var(--ink);
  border:2px solid var(--lime);
  transform:rotate(45deg);
  transition:background .18s var(--ease),box-shadow .18s var(--ease);
}
.page-about .tl-item:hover::before,.page-about .tl-item:focus-within::before{
  background:var(--lime);
  box-shadow:0 0 0 5px var(--lime-soft);
}
.page-about .tl-card{
  border:1px solid var(--about-rule);
  background:var(--about-card);
  padding:13px 15px;
  transition:transform .18s var(--ease),border-color .18s var(--ease);
}
.page-about .tl-item:hover .tl-card{transform:translateY(-2px);border-color:rgba(198,255,74,.5);}
.page-about .tl-year{
  display:block;
  font-family:var(--font-mono);
  font-size:19px;
  font-weight:700;
  color:var(--lime);
  letter-spacing:.04em;
  line-height:1.2;
}
.page-about .tl-title{margin:5px 0 6px;font-size:15.5px;font-weight:700;color:var(--paper);font-family:var(--font-body);}
.page-about .tl-text{margin:0;font-size:14px;line-height:1.75;color:rgba(244,240,230,.78);}

/* 数据条 */
.page-about .stat-row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin:0 0 18px;}
.page-about .stat{border:1px solid var(--about-rule);background:var(--deep);padding:12px 13px;min-width:0;}
.page-about .stat-num{display:block;font-family:var(--font-mono);font-size:23px;font-weight:700;color:var(--lime);line-height:1.1;}
.page-about .stat-label{display:block;margin-top:6px;font-size:12px;line-height:1.5;color:var(--mist);}

/* 展开组 */
.page-about .about-details{
  border:1px solid var(--about-rule);
  background:rgba(4,18,15,.6);
  margin-top:12px;
}
.page-about .about-details summary{
  list-style:none;
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:12px;
  padding:13px 14px;
  min-height:44px;
  cursor:pointer;
  font-size:14.5px;
  font-weight:700;
  color:var(--paper);
  transition:background .18s var(--ease);
}
.page-about .about-details summary::-webkit-details-marker{display:none;}
.page-about .about-details summary::after{content:"+";font-family:var(--font-mono);font-size:18px;color:var(--lime);line-height:1;}
.page-about .about-details[open] summary::after{content:"–";}
.page-about .about-details summary:hover{background:var(--lime-soft);}
.page-about .about-details summary:focus-visible{outline:2px solid var(--lime);outline-offset:-2px;}
.page-about .details-body{padding:0 14px 15px;font-size:14px;line-height:1.8;color:rgba(244,240,230,.82);}
.page-about .details-body p{margin:0 0 8px;}
.page-about .details-body p:last-child{margin-bottom:0;}
.page-about .step-list{margin:6px 0 0;padding-left:18px;display:grid;gap:6px;}
.page-about .editorial-figure{margin:20px 0 0;}

/* 回访路径 */
.page-about .path-grid{display:grid;gap:12px;margin:16px 0 18px;}
.page-about .path-card{
  border-left:3px solid var(--lime);
  background:rgba(22,71,58,.42);
  padding:13px 15px;
  min-width:0;
}
.page-about .path-card h3{margin:0 0 6px;font-size:15px;font-weight:700;color:var(--lime);font-family:var(--font-body);}
.page-about .path-card .about-p{font-size:14px;line-height:1.75;margin:0;}

/* 团队 */
.page-about .team-grid{display:grid;gap:12px;margin:0 0 16px;}
.page-about .team-card{
  border:1px solid var(--about-rule);
  background:var(--moss);
  padding:15px;
  min-width:0;
  transition:transform .18s var(--ease),border-color .18s var(--ease);
}
.page-about .team-card:hover{transform:translateY(-2px);border-color:rgba(198,255,74,.55);}
.page-about .team-num{display:block;font-family:var(--font-mono);font-size:26px;font-weight:700;color:var(--lime);line-height:1;}
.page-about .team-name{margin:7px 0 7px;font-size:15px;font-weight:700;color:var(--paper);font-family:var(--font-body);}
.page-about .team-text{margin:0;font-size:13.5px;line-height:1.75;color:var(--mist);}

/* 行业认可 */
.page-about .recog-list{list-style:none;margin:0 0 16px;padding:0;display:grid;gap:10px;}
.page-about .recog-item{
  display:grid;
  grid-template-columns:auto minmax(0,1fr);
  gap:12px;
  align-items:start;
  border:1px solid var(--about-rule);
  background:rgba(14,46,37,.55);
  padding:13px 14px;
  min-width:0;
}
.page-about .recog-year{
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:.06em;
  color:var(--orange);
  padding-top:2px;
}
.page-about .recog-body{min-width:0;}
.page-about .recog-body h3{margin:0 0 6px;font-size:15px;font-weight:700;color:var(--paper);font-family:var(--font-body);}
.page-about .recog-body .about-p{font-size:14px;line-height:1.75;margin:0;}

/* 尾部引导 */
.page-about .about-cta{
  margin-top:26px;
  border:1px solid var(--board);
  background:linear-gradient(122deg,rgba(22,71,58,.92),rgba(7,28,24,.92));
  padding:20px 18px;
  box-shadow:8px 8px 0 -2px rgba(198,255,74,.14);
}
.page-about .cta-title{margin:0 0 8px;font-family:var(--font-display);font-size:20px;font-weight:800;color:var(--paper);line-height:1.3;}
.page-about .cta-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px;}

@media (min-width:720px){
  .page-about .cover-grid{grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:32px;}
  .page-about .cover-facts{grid-template-columns:repeat(2,minmax(0,1fr));}
  .page-about .stat-row{grid-template-columns:repeat(4,minmax(0,1fr));}
  .page-about .path-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .page-about .team-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .page-about .about-p{font-size:15.5px;}
  .page-about .about-section{scroll-margin-top:24px;}
}

@media (min-width:980px){
  .page-about .about-cover{padding-top:34px;}
  .page-about .cover-copy{padding:32px 30px 28px;}
  .page-about .about-layout{grid-template-columns:214px minmax(0,1fr);gap:46px;padding-top:52px;}
  .page-about .about-index{position:sticky;top:20px;}
  .page-about .about-body{gap:56px;}
  .page-about .sec-head{gap:12px;padding-top:18px;margin-bottom:22px;}
  .page-about .tl-item{padding-left:44px;}
  .page-about .stat-num{font-size:26px;}
  .page-about .team-grid{gap:14px;}
  .page-about .about-cta{padding:26px 26px;}
}

@media (prefers-reduced-motion:reduce){
  .page-about .tl-item:hover .tl-card,
  .page-about .team-card:hover{transform:none;}
}
<<<END>>>