.page-about{
  --about-gap:clamp(52px,8vw,112px);
  --about-line:rgba(30,74,62,.7);
  background:var(--ink-deep);
  color:var(--paper);
  overflow-x:clip;
}

/* ---------- 右侧锚点索引 ---------- */
.page-about .about-anchors{display:none;}

@media (min-width:1200px){
  .page-about .about-anchors{
    position:fixed;
    right:10px;
    top:50%;
    transform:translateY(-50%);
    z-index:6;
    display:flex;
    flex-direction:column;
    gap:14px;
  }
  .page-about .about-anchors a{
    display:flex;
    align-items:center;
    justify-content:flex-end;
    gap:8px;
    text-decoration:none;
    color:var(--line-dim);
    padding:2px 0;
  }
  .page-about .about-anchors__no{
    font-family:var(--font-mono);
    font-size:11px;
    letter-spacing:.1em;
  }
  .page-about .about-anchors__txt{
    max-width:0;
    overflow:hidden;
    white-space:nowrap;
    opacity:0;
    font-size:12px;
    transition:max-width var(--dur) var(--ease),opacity var(--dur) var(--ease);
  }
  .page-about .about-anchors a:hover,
  .page-about .about-anchors a:focus-visible{color:var(--amber);}
  .page-about .about-anchors a:hover .about-anchors__txt,
  .page-about .about-anchors a:focus-visible .about-anchors__txt{max-width:180px;opacity:1;}
}

/* ---------- 首屏 ---------- */
.page-about .about-hero{
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--line-struct);
  padding:clamp(20px,4vw,40px) 0 clamp(44px,6vw,84px);
}
.page-about .about-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(140deg,rgba(30,74,62,.85),rgba(12,31,26,.25) 58%,rgba(6,18,15,0));
  clip-path:polygon(0 0,62% 0,42% 100%,0 100%);
  pointer-events:none;
}
.page-about .about-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(rgba(30,74,62,.4) 1px,transparent 1px),
    linear-gradient(90deg,rgba(30,74,62,.4) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:linear-gradient(to bottom,rgba(0,0,0,.9),transparent 68%);
  mask-image:linear-gradient(to bottom,rgba(0,0,0,.9),transparent 68%);
  pointer-events:none;
}
.page-about .about-hero .wrap{
  position:relative;
  z-index:2;
  display:grid;
  gap:clamp(18px,3vw,34px);
}
.page-about .about-hero__years{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 16px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  color:var(--line-dim);
}
.page-about .about-hero__years span{display:inline-flex;align-items:center;gap:7px;}
.page-about .about-hero__years span::before{content:"";width:12px;height:1px;background:currentColor;}
.page-about .about-hero__years .is-now{color:var(--amber);}
.page-about .about-hero__years .is-now::before{width:22px;background:var(--amber);}

.page-about .about-hero .breadcrumbs{margin:0 0 4px;}
.page-about .about-hero__body h1{
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(30px,5.6vw,66px);
  line-height:1.05;
  letter-spacing:-.02em;
  margin:12px 0 0;
  max-width:20ch;
}
.page-about .about-hero__lede{
  color:var(--mist);
  font-size:clamp(15px,1.5vw,17px);
  line-height:1.85;
  max-width:58ch;
  margin:18px 0 0;
}
.page-about .about-hero__meta{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(104px,1fr));
  gap:1px;
  background:var(--line-struct);
  border:1px solid var(--line-struct);
  max-width:560px;
  margin:26px 0 0;
}
.page-about .hero-stat{background:var(--ink-deep);padding:12px 14px;}
.page-about .hero-stat b{
  display:block;
  font-family:var(--font-mono);
  font-weight:500;
  font-size:clamp(20px,2.4vw,26px);
  color:var(--amber-soft);
  letter-spacing:.02em;
}
.page-about .hero-stat span{display:block;margin-top:4px;font-size:12px;color:var(--mist);letter-spacing:.04em;}
.page-about .about-hero__actions{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:16px;
  margin-top:26px;
}
.page-about .about-ghost{
  color:var(--paper);
  font-size:14px;
  text-decoration:none;
  border-bottom:1px solid var(--line-struct);
  padding-bottom:3px;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.page-about .about-ghost:hover,
.page-about .about-ghost:focus-visible{color:var(--amber-soft);border-color:var(--amber);}

@media (min-width:860px){
  .page-about .about-hero .wrap{grid-template-columns:74px minmax(0,1fr);}
  .page-about .about-hero__years{
    flex-direction:column;
    flex-wrap:nowrap;
    align-items:flex-start;
    justify-content:center;
    gap:16px;
    border-right:1px solid var(--line-struct);
    padding-right:16px;
  }
}

/* ---------- 章节通用 ---------- */
.page-about .about-section{
  padding:var(--about-gap) 0;
  border-bottom:1px solid var(--about-line);
}
.page-about .about-section:last-of-type{border-bottom:0;}
.page-about .about-section--band{
  background:var(--ink-panel);
  border-top:1px solid var(--line-struct);
}
.page-about .about-section__head{max-width:760px;margin-bottom:clamp(22px,3.5vw,44px);}
.page-about .about-section__head h2{
  font-family:var(--font-display);
  font-weight:800;
  font-size:clamp(23px,3.1vw,40px);
  line-height:1.16;
  letter-spacing:-.01em;
  margin:12px 0 0;
}
.page-about .about-section__note{
  color:var(--mist);
  font-size:15px;
  line-height:1.85;
  margin:14px 0 0;
  max-width:52ch;
}

/* ---------- 起点与现在 ---------- */
.page-about .about-split{display:grid;gap:clamp(24px,4vw,52px);}
.page-about .about-prose p{
  color:var(--mist);
  font-size:clamp(15px,1.4vw,16.5px);
  line-height:1.88;
  margin:0 0 16px;
  max-width:38em;
}
.page-about .about-prose p:last-child{margin-bottom:0;}
.page-about .about-split__aside{display:flex;flex-direction:column;gap:14px;}

.page-about .figure{margin:0;}
.page-about .figure__media{
  position:relative;
  overflow:hidden;
  border:1px solid var(--line-struct);
  background:var(--ink-panel);
  aspect-ratio:3/2;
}
.page-about .figure__media::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(160deg,rgba(6,18,15,.2),rgba(6,18,15,.62));
  pointer-events:none;
}
.page-about .figure__media img{
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
  filter:saturate(.85) contrast(1.04);
}
.page-about .figure__caption{
  font-size:12px;
  line-height:1.7;
  color:var(--line-dim);
  letter-spacing:.02em;
  margin-top:8px;
}

.page-about .stat-strip{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:1px;
  background:var(--line-struct);
  border:1px solid var(--line-struct);
}
.page-about .stat-strip li{background:var(--ink-panel);padding:14px 14px 16px;}
.page-about .stat-num{
  display:block;
  font-family:var(--font-mono);
  font-size:clamp(19px,2.2vw,25px);
  color:var(--amber-soft);
  letter-spacing:.02em;
}
.page-about .stat-unit{font-size:.62em;margin-left:2px;color:var(--amber);}
.page-about .stat-key{display:block;margin-top:5px;font-size:12px;color:var(--mist);letter-spacing:.05em;}

@media (min-width:920px){
  .page-about .about-split{grid-template-columns:minmax(0,7fr) minmax(0,4fr);}
}

/* ---------- 团队四象限 ---------- */
.page-about .role-grid{
  display:grid;
  gap:1px;
  background:var(--line-struct);
  border:1px solid var(--line-struct);
}
.page-about .role{
  background:var(--ink-panel);
  padding:clamp(20px,3vw,30px);
  transition:background var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.page-about .role:hover{background:var(--ink-moss);transform:translateY(-3px);}
.page-about .role:focus-visible{outline:3px solid var(--amber);outline-offset:-3px;}
.page-about .role__no{
  display:block;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.12em;
  color:var(--amber);
}
.page-about .role h3{
  font-family:var(--font-display);
  font-size:18px;
  font-weight:700;
  margin:10px 0 8px;
}
.page-about .role p{color:var(--mist);font-size:14.5px;line-height:1.8;margin:0;}
.page-about .role__detail{
  max-height:0;
  opacity:0;
  overflow:hidden;
  margin-top:0;
  border-left:1px solid var(--line-struct);
  padding-left:0;
  transition:max-height var(--dur) var(--ease),opacity var(--dur) var(--ease),padding-left var(--dur) var(--ease),margin-top var(--dur) var(--ease);
}
.page-about .role:hover .role__detail,
.page-about .role:focus-visible .role__detail,
.page-about .role:focus-within .role__detail{
  max-height:220px;
  opacity:1;
  margin-top:10px;
  padding-left:12px;
  border-color:var(--amber);
}
@media (hover:none){
  .page-about .role__detail{max-height:none;opacity:1;margin-top:10px;padding-left:12px;}
}
@media (min-width:700px){
  .page-about .role-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}

/* ---------- 运营流程 ---------- */
.page-about .process-layout{display:grid;gap:clamp(24px,4vw,48px);}
.page-about .process-steps{
  list-style:none;
  margin:0;
  padding:0;
  border-top:1px solid var(--line-struct);
}
.page-about .process-steps li{
  display:grid;
  grid-template-columns:40px minmax(0,1fr);
  gap:12px;
  padding:16px 0;
  border-bottom:1px solid var(--line-struct);
}
.page-about .step-no{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.1em;
  color:var(--amber);
  padding-top:4px;
}
.page-about .process-steps h3{
  font-size:16px;
  font-weight:700;
  margin:0 0 4px;
}
.page-about .process-steps p{color:var(--mist);font-size:14.5px;line-height:1.8;margin:0;}
.page-about .process-aside{display:flex;flex-direction:column;gap:16px;}
.page-about .process-note{
  border:1px solid var(--line-struct);
  border-left:2px solid var(--amber);
  background:var(--ink-deep);
  padding:16px 18px;
}
.page-about .process-note .mono{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
  color:var(--amber);
}
.page-about .process-note p{color:var(--mist);font-size:14px;line-height:1.8;margin:8px 0 0;}
@media (min-width:920px){
  .page-about .process-layout{grid-template-columns:minmax(0,6fr) minmax(0,5fr);align-items:start;}
}

/* ---------- 时间轴 ---------- */
.page-about .about-timeline{
  list-style:none;
  margin:0 0 0 6px;
  padding:0;
  border-left:1px solid var(--line-struct);
  max-width:860px;
}
.page-about .tl-item{position:relative;padding-left:clamp(16px,3vw,34px);}
.page-about .tl-item::before{
  content:"";
  position:absolute;
  left:-4px;
  top:20px;
  width:7px;
  height:7px;
  border-radius:50%;
  background:var(--ink-panel);
  border:1px solid var(--amber);
}
.page-about .tl-item:first-child::before{background:var(--amber);}
.page-about .tl-item details{border-bottom:1px solid var(--line-struct);}
.page-about .tl-item summary{
  display:flex;
  align-items:baseline;
  gap:12px;
  padding:14px 0;
  cursor:pointer;
  list-style:none;
}
.page-about .tl-item summary::-webkit-details-marker{display:none;}
.page-about .tl-item summary:focus-visible{outline:3px solid var(--amber);outline-offset:2px;}
.page-about .tl-year{
  flex:none;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--amber);
}
.page-about .tl-name{
  flex:1;
  min-width:0;
  font-size:clamp(15px,1.6vw,17px);
  font-weight:600;
  color:var(--paper);
  transition:color var(--dur) var(--ease);
}
.page-about .tl-item summary:hover .tl-name{color:var(--amber-soft);}
.page-about .tl-sign{
  flex:none;
  color:var(--line-dim);
  font-size:15px;
  line-height:1;
  transition:transform var(--dur) var(--ease),color var(--dur) var(--ease);
}
.page-about .tl-item details[open] .tl-sign{transform:rotate(45deg);color:var(--amber);}
.page-about .tl-body{
  color:var(--mist);
  font-size:14.5px;
  line-height:1.85;
  margin:0;
  padding:0 0 18px;
  max-width:56ch;
}

/* ---------- 覆盖范围 ---------- */
.page-about .coverage-top{display:grid;gap:clamp(20px,3vw,36px);margin-bottom:clamp(22px,3.5vw,40px);}
.page-about .coverage-map{
  border:1px solid var(--line-struct);
  background:var(--ink-panel);
  padding:10px;
}
.page-about .coverage-map svg{display:block;width:100%;height:auto;}
.page-about .coverage-list{display:flex;flex-direction:column;gap:18px;}
.page-about .city-chips{
  list-style:none;
  margin:0;
  padding:0;
  display:flex;
  flex-wrap:wrap;
  gap:8px;
}
.page-about .city-chips li{
  font-size:13px;
  letter-spacing:.04em;
  color:var(--mist);
  border:1px solid var(--line-struct);
  padding:6px 12px;
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.page-about .city-chips li:hover{border-color:var(--amber);color:var(--paper);}
.page-about .city-chips .is-core{border-color:var(--amber);color:var(--amber-soft);}
.page-about .coverage-panel{
  border:1px solid var(--line-struct);
  background:var(--ink-panel);
  padding:clamp(16px,2.4vw,22px);
}
.page-about .coverage-panel__title{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
  color:var(--amber);
  margin:0 0 12px;
}
.page-about .coverage-panel dl{margin:0;display:grid;gap:10px;}
.page-about .coverage-panel dl > div{
  display:grid;
  grid-template-columns:76px minmax(0,1fr);
  gap:10px;
  padding-top:10px;
  border-top:1px solid var(--about-line);
}
.page-about .coverage-panel dl > div:first-child{border-top:0;padding-top:0;}
.page-about .coverage-panel dt{font-size:13px;color:var(--cyan);letter-spacing:.04em;}
.page-about .coverage-panel dd{margin:0;font-size:13.5px;line-height:1.7;color:var(--mist);}
.page-about .figure--wide .figure__media{aspect-ratio:2/1;}
@media (min-width:920px){
  .page-about .coverage-top{grid-template-columns:minmax(0,6fr) minmax(0,5fr);align-items:start;}
}

/* ---------- 合作 ---------- */
.page-about .partner-grid{
  display:grid;
  gap:1px;
  background:var(--line-struct);
  border:1px solid var(--line-struct);
}
.page-about .partner{
  background:var(--ink-panel);
  padding:clamp(20px,3vw,28px);
  transition:background var(--dur) var(--ease);
}
.page-about .partner:hover{background:var(--ink-moss);}
.page-about .partner .mono{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.14em;
  color:var(--amber);
}
.page-about .partner h3{font-size:17px;font-weight:700;margin:10px 0 8px;}
.page-about .partner p{color:var(--mist);font-size:14.5px;line-height:1.8;margin:0;}
.page-about .partner-note{
  margin-top:clamp(22px,3vw,34px);
  display:grid;
  gap:16px;
  align-items:start;
}
.page-about .partner-note p{color:var(--mist);font-size:15px;line-height:1.85;margin:0;max-width:56ch;}
@media (min-width:760px){
  .page-about .partner-grid{grid-template-columns:repeat(3,minmax(0,1fr));}
  .page-about .partner-note{grid-template-columns:minmax(0,1fr) auto;align-items:center;}
}

/* ---------- 准则与收束 ---------- */
.page-about .principles{
  display:grid;
  gap:1px;
  background:var(--line-struct);
  border:1px solid var(--line-struct);
}
.page-about .principles article{
  background:var(--ink-deep);
  padding:clamp(18px,2.6vw,26px);
  border-top:2px solid var(--amber);
}
.page-about .principles h3{font-size:17px;font-weight:700;margin:0 0 8px;color:var(--amber-soft);}
.page-about .principles p{color:var(--mist);font-size:14px;line-height:1.8;margin:0;}

.page-about .about-cta{
  margin-top:clamp(32px,5vw,64px);
  border:1px solid var(--line-struct);
  background:var(--ink-deep);
  padding:clamp(22px,4vw,44px);
  display:grid;
  gap:clamp(22px,3.5vw,40px);
  align-items:start;
}
.page-about .about-cta h2{
  font-family:var(--font-display);
  font-size:clamp(21px,2.6vw,30px);
  line-height:1.24;
  margin:12px 0 10px;
  max-width:24ch;
}
.page-about .about-cta > div > p:not(.eyebrow){color:var(--mist);font-size:15px;line-height:1.85;margin:0;max-width:48ch;}
.page-about .about-links{list-style:none;margin:0;padding:0;display:grid;gap:1px;background:var(--line-struct);border:1px solid var(--line-struct);}
.page-about .about-links a{
  display:block;
  background:var(--ink-panel);
  padding:13px 16px;
  text-decoration:none;
  color:var(--paper);
  transition:background var(--dur) var(--ease),padding-left var(--dur) var(--ease);
}
.page-about .about-links a:hover,
.page-about .about-links a:focus-visible{background:var(--ink-moss);padding-left:22px;}
.page-about .about-links a > span:first-child{display:block;font-size:15px;font-weight:600;}
.page-about .about-links__hint{display:block;margin-top:4px;font-size:12.5px;color:var(--line-dim);}

@media (min-width:760px){
  .page-about .principles{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (min-width:1100px){
  .page-about .principles{grid-template-columns:repeat(4,minmax(0,1fr));}
  .page-about .about-cta{grid-template-columns:minmax(0,5fr) minmax(0,4fr);}
}
<<<END>>>