.page-about{
  overflow-x:clip;
  background:var(--c-sand);
  color:var(--c-ink);
  font-family:var(--font-sans);
  line-height:1.85;
}

/* ---------- 首屏门厅 ---------- */
.page-about .ab-mast{
  padding:clamp(18px,3.6vw,40px) 0 clamp(30px,5vw,56px);
}
.page-about .ab-mast__grid{
  display:grid;
  gap:clamp(24px,4vw,48px);
  margin-top:clamp(20px,3vw,34px);
}
.page-about .ab-mast__title{
  font-family:var(--font-serif);
  font-weight:700;
  font-size:clamp(30px,5.4vw,56px);
  line-height:1.2;
  letter-spacing:-.005em;
  margin:12px 0 0;
  max-width:15em;
}
.page-about .ab-mast__title::after{
  content:"";
  display:block;
  width:66px;
  height:3px;
  margin-top:22px;
  background:linear-gradient(90deg,var(--c-copper),var(--c-copper-lt));
}
.page-about .ab-mast__lede{
  margin-top:18px;
  max-width:34em;
  color:var(--c-ink-soft);
}
.page-about .ab-mast__meta{
  list-style:none;
  margin:0;
  padding:20px 0 0;
  display:grid;
  gap:12px;
  border-top:1px solid var(--c-print);
}
.page-about .ab-mast__meta li{
  display:flex;
  justify-content:space-between;
  align-items:baseline;
  gap:14px;
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.03em;
}
.page-about .ab-k{color:var(--c-ink-soft);}
.page-about .ab-v{color:var(--c-copper);white-space:nowrap;}

/* ---------- 章节骨架 ---------- */
.page-about .ab-sec{
  padding:clamp(36px,6vw,74px) 0;
  border-top:1px solid var(--c-print);
}
.page-about .ab-sec--map{
  background:
    repeating-linear-gradient(90deg,rgba(230,210,174,.28) 0 1px,transparent 1px 72px),
    var(--c-sand);
}
.page-about .ab-sec--closing{
  background:
    linear-gradient(180deg,rgba(230,210,174,.35),transparent 60%),
    var(--c-sand);
}
.page-about .ab-head{display:grid;gap:26px;}
.page-about .ab-head__lead{
  margin:16px 0 0;
  max-width:36em;
  font-size:clamp(15px,1.55vw,17px);
  line-height:1.92;
  color:var(--c-ink-soft);
}
.page-about .wb-title{
  font-family:var(--font-serif);
  font-weight:600;
  font-size:clamp(24px,3.5vw,38px);
  line-height:1.3;
  margin:8px 0 0;
  letter-spacing:-.002em;
}
.page-about .ab-head__fig{margin:0;}

/* ---------- 图片 ---------- */
.page-about .wb-media{
  margin:0;
  background:var(--c-paper);
  border:1px solid var(--c-print);
  border-radius:var(--radius-paper);
  overflow:hidden;
  box-shadow:var(--shadow-lift);
}
.page-about .wb-media__img{
  display:block;
  width:100%;
  height:auto;
  max-width:100%;
  object-fit:cover;
}
.page-about .wb-media__caption{
  font-family:var(--font-mono);
  font-size:12px;
  line-height:1.7;
  color:var(--c-ink-soft);
  padding:10px 14px;
  border-top:1px dashed var(--c-print);
}

/* ---------- 年志时间线 ---------- */
.page-about .ab-timeline{
  list-style:none;
  margin:34px 0 0;
  padding:0 0 0 30px;
  position:relative;
}
.page-about .ab-tl{
  position:relative;
  display:grid;
  gap:6px;
  padding-bottom:34px;
}
.page-about .ab-tl:last-child{padding-bottom:0;}
.page-about .ab-tl::before{
  content:"";
  position:absolute;
  left:-24px;
  top:8px;
  bottom:-8px;
  width:2px;
  background:linear-gradient(180deg,var(--c-copper-lt),var(--c-print));
}
.page-about .ab-tl:last-child::before{display:none;}
.page-about .ab-tl::after{
  content:"";
  position:absolute;
  left:-30px;
  top:6px;
  width:14px;
  height:14px;
  border-radius:50%;
  background:var(--c-paper);
  border:3px solid var(--c-copper);
}
.page-about .ab-tl__year{
  font-family:var(--font-mono);
  font-size:16px;
  letter-spacing:.12em;
  color:var(--c-copper);
  transition:color .22s var(--ease);
}
.page-about .ab-tl__h{
  font-family:var(--font-serif);
  font-size:clamp(18px,2.4vw,22px);
  font-weight:600;
  line-height:1.42;
  margin:0 0 8px;
}
.page-about .ab-tl__body p{
  margin:0 0 12px;
  max-width:40em;
  font-size:15.5px;
  line-height:1.92;
  color:var(--c-ink-soft);
}
.page-about .ab-tl:hover .ab-tl__year{color:var(--c-vermilion);}
.page-about .ab-tl:hover::after{border-color:var(--c-vermilion);}
.page-about .ab-stamp{
  display:inline-block;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.2em;
  color:var(--c-vermilion);
  border:1.5px solid currentColor;
  border-radius:4px;
  padding:3px 9px;
  transform:rotate(-3deg);
}

/* ---------- 服务地图 ---------- */
.page-about .ab-map{
  display:grid;
  gap:26px;
  margin-top:30px;
}
.page-about .ab-map__frame{
  position:relative;
  aspect-ratio:4/3;
  border:1px solid var(--c-print);
  border-radius:var(--radius-paper);
  background-color:var(--c-paper);
  background-image:radial-gradient(circle,rgba(176,106,59,.26) 1.4px,transparent 1.6px);
  background-size:16px 16px;
  background-position:center;
  overflow:hidden;
  box-shadow:var(--shadow-lift);
}
.page-about .ab-map__city{
  position:absolute;
  transform:translate(-50%,-50%);
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:5px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.04em;
  color:var(--c-ink);
  white-space:nowrap;
  transition:color .2s var(--ease);
}
.page-about .ab-map__city b{font-weight:400;}
.page-about .ab-map__dot{
  width:12px;
  height:12px;
  border-radius:50%;
  background:var(--c-copper);
  box-shadow:0 0 0 5px rgba(176,106,59,.16);
  transition:transform .22s var(--ease),background .22s var(--ease),box-shadow .22s var(--ease);
}
.page-about .ab-map__city:hover{color:var(--c-vermilion);}
.page-about .ab-map__city:hover .ab-map__dot{
  background:var(--c-vermilion);
  transform:scale(1.3);
  box-shadow:0 0 0 7px rgba(197,58,46,.16);
}
.page-about .ab-map__city--szs{left:62%;top:17%;}
.page-about .ab-map__city--yc{left:45%;top:36%;}
.page-about .ab-map__city--wz{left:58%;top:55%;}
.page-about .ab-map__city--zw{left:27%;top:50%;}
.page-about .ab-map__city--gy{left:40%;top:79%;}
.page-about .ab-map__out{
  position:absolute;
  transform:translate(-50%,-50%);
  width:7px;
  height:7px;
  border-radius:50%;
  background:var(--c-leaf);
  opacity:.6;
}
.page-about .ab-map__out--1{left:12%;top:20%;}
.page-about .ab-map__out--2{left:82%;top:14%;}
.page-about .ab-map__out--3{left:88%;top:47%;}
.page-about .ab-map__out--4{left:16%;top:72%;}
.page-about .ab-map__out--5{left:64%;top:88%;}
.page-about .ab-map__out--6{left:7%;top:47%;}

.page-about .ab-map__side{
  display:grid;
  align-content:start;
  gap:6px;
}
.page-about .ab-map__sidetitle{
  font-family:var(--font-serif);
  font-size:18px;
  font-weight:600;
  margin:0 0 12px;
  padding-bottom:10px;
  border-bottom:1px solid var(--c-copper);
}
.page-about .ab-map__cities{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  gap:12px;
}
.page-about .ab-map__cities li{
  display:grid;
  gap:2px;
  padding-bottom:12px;
  border-bottom:1px dashed var(--c-print);
}
.page-about .ab-map__cities li:last-child{border-bottom:0;padding-bottom:0;}
.page-about .ab-map__cname{
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.12em;
  color:var(--c-copper);
}
.page-about .ab-map__cdesc{
  font-size:13.5px;
  line-height:1.72;
  color:var(--c-ink-soft);
}

/* ---------- 数字条 ---------- */
.page-about .ab-stats{
  list-style:none;
  margin:34px 0 0;
  padding:0;
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:1px;
  background:var(--c-print);
  border:1px solid var(--c-print);
  border-radius:var(--radius-paper);
  overflow:hidden;
}
.page-about .ab-stat{
  background:var(--c-paper);
  padding:18px 16px;
  display:grid;
  gap:6px;
  align-content:start;
}
.page-about .ab-stat__num{
  font-family:var(--font-serif);
  font-weight:700;
  font-size:clamp(26px,3.4vw,34px);
  line-height:1.1;
  color:var(--c-ink);
}
.page-about .ab-stat__num em{
  font-family:var(--font-mono);
  font-style:normal;
  font-size:12px;
  letter-spacing:.06em;
  color:var(--c-copper);
  margin-left:4px;
}
.page-about .ab-stat__label{
  font-size:12.5px;
  line-height:1.65;
  color:var(--c-ink-soft);
}

/* ---------- 团队 ---------- */
.page-about .ab-team{
  display:grid;
  gap:30px;
  margin-top:30px;
}
.page-about .ab-roles{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  gap:14px;
}
.page-about .ab-role{
  display:grid;
  grid-template-columns:52px 1fr;
  gap:14px;
  align-items:start;
  background:var(--c-paper);
  border:1px solid var(--c-print);
  border-left:3px solid var(--c-copper);
  border-radius:14px;
  padding:16px 18px;
}
.page-about .ab-role__num{
  font-family:var(--font-mono);
  font-size:20px;
  line-height:1.3;
  color:var(--c-copper);
}
.page-about .ab-role__h{
  font-family:var(--font-serif);
  font-size:17px;
  font-weight:600;
  margin:0 0 4px;
}
.page-about .ab-role p{
  margin:0;
  font-size:14px;
  line-height:1.78;
  color:var(--c-ink-soft);
}
.page-about .ab-team__fig{margin:0;}

.page-about .ab-train{
  margin-top:28px;
  display:grid;
  gap:16px;
  align-items:center;
  background:var(--c-print);
  border-radius:var(--radius-paper);
  padding:22px;
}
.page-about .ab-train p{
  margin:0;
  font-size:14.5px;
  line-height:1.9;
  color:var(--c-ink);
}
.page-about .ab-train strong{color:var(--c-ink);}

/* ---------- 五步流程 ---------- */
.page-about .ab-flow{
  list-style:none;
  margin:30px 0 0;
  padding:0;
  display:grid;
  gap:1px;
  background:var(--c-print);
  border:1px solid var(--c-print);
  border-radius:var(--radius-paper);
  overflow:hidden;
}
.page-about .ab-step{
  background:var(--c-paper);
  padding:20px 18px;
  display:grid;
  gap:6px;
  align-content:start;
}
.page-about .ab-step__n{
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.2em;
  color:var(--c-vermilion);
}
.page-about .ab-step h3{
  font-family:var(--font-serif);
  font-size:17px;
  font-weight:600;
  margin:0;
}
.page-about .ab-step p{
  margin:0;
  font-size:13.5px;
  line-height:1.72;
  color:var(--c-ink-soft);
}

.page-about .ab-checks{
  margin-top:26px;
  display:grid;
  gap:20px;
  padding:22px;
  border:1px dashed var(--c-copper-lt);
  border-radius:var(--radius-paper);
  background:rgba(251,246,236,.72);
}
.page-about .ab-checks__h{
  font-family:var(--font-serif);
  font-size:18px;
  font-weight:600;
  margin:0 0 6px;
}
.page-about .ab-checks p{
  margin:0;
  max-width:40em;
  font-size:14.5px;
  line-height:1.85;
  color:var(--c-ink-soft);
}
.page-about .ab-chips{
  list-style:none;
  margin:0;
  padding:0;
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  align-content:start;
}

/* ---------- 资质 ---------- */
.page-about .ab-honor{
  list-style:none;
  margin:30px 0 0;
  padding:0;
  display:grid;
  gap:16px;
}
.page-about .ab-seal{
  background:var(--c-paper);
  border:1px solid var(--c-print);
  border-radius:var(--radius-paper);
  padding:22px 20px;
  display:grid;
  gap:8px;
  align-content:start;
}
.page-about .ab-seal__t{
  justify-self:start;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.18em;
  color:var(--c-vermilion);
  border:1px solid currentColor;
  border-radius:3px;
  padding:2px 7px;
  transform:rotate(-2deg);
}
.page-about .ab-seal h3{
  font-family:var(--font-serif);
  font-size:16.5px;
  font-weight:600;
  line-height:1.45;
  margin:0;
}
.page-about .ab-seal p{
  margin:0;
  font-size:13.5px;
  line-height:1.75;
  color:var(--c-ink-soft);
}
.page-about .ab-eco{
  margin:26px 0 0;
  padding-top:18px;
  border-top:1px solid var(--c-print);
  font-family:var(--font-mono);
  font-size:12.5px;
  line-height:1.95;
  color:var(--c-ink-soft);
}

/* ---------- 收尾 ---------- */
.page-about .ab-closing{
  display:grid;
  gap:28px;
}
.page-about .ab-closing__fig{margin:0;}
.page-about .ab-closing__text p{
  margin:16px 0 0;
  max-width:36em;
  font-size:15.5px;
  line-height:1.95;
  color:var(--c-ink-soft);
}
.page-about .ab-closing__cta{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:26px;
}
.page-about .ab-closing__more{
  margin-top:16px;
  font-size:13.5px;
  color:var(--c-ink-soft);
}
.page-about .ab-closing__more a{
  color:var(--c-vermilion);
  text-decoration:underline;
  text-underline-offset:3px;
}
.page-about .ab-closing__more a:hover{color:var(--c-copper);}

/* ---------- 响应式 ---------- */
@media (min-width:760px){
  .page-about .ab-timeline{padding-left:44px;}
  .page-about .ab-tl{
    grid-template-columns:92px 1fr;
    column-gap:32px;
    padding-bottom:44px;
  }
  .page-about .ab-tl__year{
    text-align:right;
    font-size:19px;
    padding-top:2px;
  }
  .page-about .ab-tl::before{left:-38px;top:10px;}
  .page-about .ab-tl::after{left:-44px;top:8px;}
  .page-about .ab-stats{grid-template-columns:repeat(4,1fr);}
  .page-about .ab-honor{grid-template-columns:repeat(2,1fr);gap:18px;}
  .page-about .ab-train{
    grid-template-columns:1fr auto;
    padding:26px 30px;
  }
  .page-about .ab-checks{
    grid-template-columns:1fr auto;
    align-items:center;
    gap:30px;
    padding:26px 30px;
  }
  .page-about .ab-chips{max-width:260px;justify-content:flex-end;}
  .page-about .ab-map__frame{aspect-ratio:16/11;}
}

@media (min-width:880px){
  .page-about .ab-mast__grid{
    grid-template-columns:1.62fr .9fr;
    align-items:end;
  }
  .page-about .ab-head--split{
    grid-template-columns:1.24fr .76fr;
    align-items:end;
    gap:44px;
  }
  .page-about .ab-map{
    grid-template-columns:1.4fr .6fr;
    gap:40px;
    align-items:start;
  }
  .page-about .ab-map__side{
    padding-left:28px;
    border-left:1px solid var(--c-print);
  }
  .page-about .ab-flow{grid-template-columns:repeat(5,1fr);}
}

@media (min-width:980px){
  .page-about .ab-team{
    grid-template-columns:1.06fr .94fr;
    align-items:start;
    gap:44px;
  }
  .page-about .ab-team__fig{position:sticky;top:96px;}
  .page-about .ab-closing{
    grid-template-columns:.94fr 1.06fr;
    align-items:center;
    gap:48px;
  }
}

@media (min-width:1080px){
  .page-about .ab-honor{grid-template-columns:repeat(4,1fr);}
}

@media (max-width:420px){
  .page-about .ab-map__city{font-size:10px;gap:4px;}
  .page-about .ab-map__dot{width:10px;height:10px;}
  .page-about .ab-role{grid-template-columns:44px 1fr;padding:14px 15px;}
}

@media (prefers-reduced-motion:reduce){
  .page-about *{
    transition-duration:.001ms !important;
    animation-duration:.001ms !important;
  }
}