.page-about{
  --about-pad:clamp(44px,7vw,88px);
  --about-gap:clamp(16px,2.4vw,28px);
  background:
    radial-gradient(1000px 520px at 86% -10%, rgba(108,92,231,.28), transparent 62%),
    radial-gradient(760px 420px at 2% 6%, rgba(217,30,38,.18), transparent 58%),
    var(--ink);
  color:var(--mist);
  overflow-x:hidden;
}
.page-about *{box-sizing:border-box;}
.page-about h2,
.page-about h3{letter-spacing:-.03em;line-height:1.15;margin:0;}
.page-about p{margin:0;}

.page-about .about-top{padding:clamp(16px,2.4vw,26px) 0 0;}
.page-about .breadcrumb{display:flex;flex-wrap:wrap;gap:8px;font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;color:var(--mute);}
.page-about .breadcrumb a{color:var(--ash);text-decoration:none;}
.page-about .breadcrumb a:hover,
.page-about .breadcrumb a:focus-visible{color:var(--cyan);}

/* ---------- 首屏 ---------- */
.page-about .about-hero{
  display:grid;
  gap:clamp(22px,3.4vw,44px);
  padding:clamp(22px,3.4vw,34px) 0 var(--about-pad);
}
.page-about .about-hero-title{
  margin:14px 0 0;
  font-size:clamp(38px,8vw,74px);
  font-weight:900;
  line-height:.98;
  letter-spacing:-.045em;
  display:flex;
  flex-direction:column;
  gap:10px;
}
.page-about .about-hero-sub{
  font-size:clamp(20px,3.4vw,30px);
  font-weight:700;
  letter-spacing:-.02em;
  line-height:1.3;
  color:var(--cyan);
}
.page-about .about-hero-lead{
  margin-top:clamp(18px,2.4vw,26px);
  max-width:36em;
  font-size:clamp(15px,1.6vw,17px);
  line-height:1.8;
  color:var(--ash);
}
.page-about .about-hero-actions{
  margin-top:clamp(22px,3vw,32px);
  display:flex;
  flex-wrap:wrap;
  gap:12px;
}
.page-about .about-factcard{
  padding:clamp(20px,3vw,28px);
  background:linear-gradient(160deg, rgba(26,30,41,.98), rgba(11,13,18,.98));
  align-self:start;
}
.page-about .about-factcard-title{
  font-size:12px;
  letter-spacing:.14em;
  color:var(--gold);
  margin-bottom:16px;
}
.page-about .about-facts{margin:0;display:grid;}
.page-about .about-fact-row{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:12px;
  padding:12px 0;
  border-bottom:1px solid var(--hair);
}
.page-about .about-fact-row:first-child{padding-top:0;}
.page-about .about-fact-row dt{font-size:14px;color:var(--ash);}
.page-about .about-fact-row dd{
  margin:0;
  font-size:clamp(17px,2vw,20px);
  font-weight:700;
  color:var(--mist);
}
.page-about .about-factcard-note{
  margin-top:16px;
  font-size:13px;
  line-height:1.7;
  color:var(--mute);
}

/* ---------- 段落通用 ---------- */
.page-about .about-sec{padding:var(--about-pad) 0;border-top:2px solid var(--hair);}
.page-about .about-sec-head{max-width:44em;margin-bottom:clamp(26px,4vw,44px);}
.page-about .about-sec-head h2{
  margin-top:12px;
  font-size:clamp(27px,4.6vw,44px);
  font-weight:900;
}
.page-about .about-sec-lead{
  margin-top:16px;
  font-size:clamp(15px,1.6vw,17px);
  line-height:1.8;
  color:var(--ash);
}

/* ---------- 时间线 ---------- */
.page-about .about-rail{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  gap:clamp(18px,2.8vw,30px);
}
.page-about .about-stop{display:grid;gap:12px;}
.page-about .about-stop-year{
  position:relative;
  display:flex;
  align-items:center;
  gap:12px;
  padding-left:20px;
}
.page-about .about-stop-year::before{
  content:"";
  position:absolute;
  left:0;
  top:.55em;
  width:10px;
  height:10px;
  border-radius:50%;
  background:var(--red);
  box-shadow:0 0 0 4px rgba(217,30,38,.2);
}
.page-about .about-stop-year::after{
  content:"";
  position:absolute;
  left:4px;
  top:calc(.55em + 18px);
  bottom:-22px;
  width:2px;
  background:linear-gradient(180deg, rgba(217,30,38,.75), rgba(47,243,224,.15));
}
.page-about .about-stop:last-child .about-stop-year::after{display:none;}
.page-about .about-year{
  font-size:clamp(26px,4vw,40px);
  font-weight:700;
  color:var(--mist);
  letter-spacing:-.02em;
}
.page-about .about-anno{
  writing-mode:vertical-rl;
  font-size:12px;
  letter-spacing:.16em;
  color:var(--mute);
}
.page-about .about-stop-panel{
  padding:clamp(20px,3vw,30px);
  background:var(--panel-2);
}
.page-about .about-stop-panel h3{
  margin:14px 0 12px;
  font-size:clamp(19px,2.4vw,24px);
  font-weight:800;
}
.page-about .about-stop-panel p{
  font-size:15px;
  line-height:1.85;
  color:var(--ash);
}
.page-about .about-figure{margin:22px 0 0;}

/* ---------- 团队 ---------- */
.page-about .about-team-media{margin:0 0 clamp(24px,3.6vw,40px);}
.page-about .about-roles{
  display:grid;
  gap:clamp(14px,2vw,20px);
}
.page-about .about-role{
  border:2px solid var(--hair-strong);
  background:var(--panel);
  padding:clamp(18px,2.6vw,26px);
  box-shadow:var(--shadow-hard);
  transition:transform .28s var(--ease), box-shadow .28s var(--ease), border-color .28s var(--ease);
}
.page-about .about-role:hover,
.page-about .about-role:focus-within{
  transform:translate(-2px,-2px);
  border-color:rgba(47,243,224,.55);
  box-shadow:var(--shadow-cyan);
}
.page-about .about-role-num{
  font-size:12px;
  letter-spacing:.16em;
  color:var(--red-bright);
}
.page-about .about-role-name{
  margin:10px 0 12px;
  font-size:clamp(18px,2.2vw,21px);
  font-weight:800;
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  gap:10px;
}
.page-about .about-role-count{
  font-size:12px;
  font-weight:500;
  color:var(--ink);
  background:var(--gold);
  padding:2px 8px;
  border-radius:var(--r);
  letter-spacing:.06em;
}
.page-about .about-role-desc{
  font-size:14.5px;
  line-height:1.8;
  color:var(--ash);
}
.page-about .about-role-note{
  max-height:0;
  overflow:hidden;
  opacity:0;
  margin-top:0;
  font-size:13px;
  line-height:1.7;
  color:var(--cyan);
  transition:max-height .32s var(--ease), opacity .32s var(--ease), margin-top .32s var(--ease);
}
.page-about .about-role:hover .about-role-note,
.page-about .about-role:focus-within .about-role-note{
  max-height:6em;
  opacity:1;
  margin-top:12px;
}

/* ---------- 内容体系 ---------- */
.page-about .about-gov{
  display:grid;
  gap:clamp(24px,3.6vw,44px);
}
.page-about .about-gov-copy h2{
  margin-top:12px;
  font-size:clamp(27px,4.6vw,44px);
  font-weight:900;
}
.page-about .about-metrics{
  margin-top:clamp(22px,3vw,32px);
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:2px;
  background:var(--hair);
  border:2px solid var(--hair-strong);
}
.page-about .about-metric{
  background:var(--ink-deep);
  padding:clamp(14px,2.2vw,22px);
  display:flex;
  flex-direction:column;
  gap:6px;
}
.page-about .about-metric-num{
  font-size:clamp(28px,4.4vw,40px);
  font-weight:700;
  color:var(--cyan);
  letter-spacing:-.02em;
  line-height:1;
}
.page-about .about-metric-label{font-size:12.5px;color:var(--ash);letter-spacing:.04em;}
.page-about .about-steps{
  list-style:none;
  margin:clamp(22px,3vw,30px) 0 0;
  padding:0;
  display:grid;
  gap:10px;
}
.page-about .about-step{
  display:flex;
  gap:12px;
  align-items:flex-start;
  font-size:14.5px;
  line-height:1.75;
  color:var(--ash);
  padding:12px 14px;
  border-left:2px solid var(--violet);
  background:rgba(108,92,231,.08);
}
.page-about .about-step-num{
  color:var(--violet);
  font-size:13px;
  font-weight:700;
  flex:0 0 auto;
}
.page-about .about-gov-media{margin:0;}

/* ---------- 覆盖与合作 ---------- */
.page-about .about-cover-items{
  display:grid;
  gap:2px;
  background:var(--hair);
  border:2px solid var(--hair-strong);
}
.page-about .about-cover-item{
  background:var(--panel-2);
  padding:clamp(18px,2.6vw,26px);
  display:flex;
  flex-direction:column;
  gap:8px;
}
.page-about .about-cover-num{
  font-size:clamp(30px,5vw,46px);
  font-weight:700;
  line-height:1;
  color:var(--gold);
  letter-spacing:-.03em;
}
.page-about .about-cover-label{
  font-size:13px;
  letter-spacing:.08em;
  color:var(--mist);
}
.page-about .about-cover-item p{
  font-size:14px;
  line-height:1.75;
  color:var(--ash);
}
.page-about .about-partners{
  margin-top:clamp(22px,3vw,30px);
  padding:clamp(18px,2.6vw,26px);
  border:2px dashed var(--hair-strong);
}
.page-about .about-partners-title{
  font-size:12px;
  letter-spacing:.14em;
  color:var(--mute);
  margin-bottom:14px;
}
.page-about .about-partner-list{
  list-style:none;
  margin:0;
  padding:0;
  display:flex;
  flex-wrap:wrap;
  gap:10px;
}
.page-about .about-partner{
  font-size:13px;
  line-height:1;
  padding:9px 14px;
  border:2px solid rgba(47,243,224,.4);
  color:var(--cyan);
  background:rgba(47,243,224,.06);
}

/* ---------- 认可 ---------- */
.page-about .about-honor-grid{
  display:grid;
  gap:clamp(16px,2.4vw,24px);
}
.page-about .about-honor{
  padding:clamp(22px,3vw,32px);
  background:linear-gradient(150deg, rgba(255,179,71,.12), rgba(11,13,18,.98) 62%);
}
.page-about .about-honor-year{
  font-size:clamp(24px,3.4vw,34px);
  font-weight:700;
  color:var(--gold);
  letter-spacing:-.02em;
  line-height:1;
}
.page-about .about-honor h3{
  margin:14px 0 12px;
  font-size:clamp(18px,2.3vw,22px);
  font-weight:800;
}
.page-about .about-honor p{
  font-size:14.5px;
  line-height:1.8;
  color:var(--ash);
}

/* ---------- 结尾 ---------- */
.page-about .about-cta{border-top:2px solid var(--hair);}
.page-about .about-cta-inner{
  padding:clamp(24px,4vw,44px);
  background:
    linear-gradient(135deg, rgba(217,30,38,.22), rgba(108,92,231,.18) 48%, rgba(47,243,224,.16) 100%),
    var(--panel);
  display:grid;
  gap:clamp(20px,3vw,36px);
}
.page-about .about-cta-copy h2{
  margin-top:12px;
  font-size:clamp(24px,3.8vw,36px);
  font-weight:900;
}
.page-about .about-cta-copy p:last-child{
  margin-top:14px;
  font-size:15px;
  line-height:1.85;
  color:var(--ash);
  max-width:40em;
}
.page-about .about-cta-links{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  gap:2px;
  background:var(--hair);
}
.page-about .about-link{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:14px 18px;
  background:var(--ink-deep);
  color:var(--mist);
  text-decoration:none;
  font-size:15px;
  transition:background .24s var(--ease), color .24s var(--ease), padding-left .24s var(--ease);
}
.page-about .about-link span{color:var(--cyan);font-family:var(--font-mono);}
.page-about .about-link:hover,
.page-about .about-link:focus-visible{
  background:var(--red);
  color:#fff;
  padding-left:24px;
}
.page-about .about-link:hover span,
.page-about .about-link:focus-visible span{color:#fff;}
.page-about .about-totop-wrap{margin-top:22px;text-align:right;}
.page-about .about-totop{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.1em;
  color:var(--ash);
  text-decoration:none;
  border-bottom:2px solid transparent;
  padding-bottom:3px;
}
.page-about .about-totop:hover,
.page-about .about-totop:focus-visible{color:var(--cyan);border-bottom-color:var(--cyan);}

.page-about a:focus-visible,
.page-about .about-role:focus-within{
  outline:2px solid var(--cyan);
  outline-offset:3px;
}

/* ---------- 断点 ---------- */
@media (min-width:680px){
  .page-about .about-roles{grid-template-columns:repeat(2,minmax(0,1fr));}
  .page-about .about-cover-items{grid-template-columns:repeat(2,minmax(0,1fr));}
  .page-about .about-metrics{grid-template-columns:repeat(4,minmax(0,1fr));}
  .page-about .about-honor-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}

@media (min-width:900px){
  .page-about .about-hero{
    grid-template-columns:minmax(0,7fr) minmax(0,4fr);
    align-items:start;
  }
  .page-about .about-factcard{position:sticky;top:24px;}
  .page-about .about-gov{grid-template-columns:minmax(0,7fr) minmax(0,4fr);align-items:start;}
  .page-about .about-cta-inner{grid-template-columns:minmax(0,7fr) minmax(0,4fr);align-items:center;}
}

@media (min-width:820px){
  .page-about .about-stop{
    grid-template-columns:150px minmax(0,1fr);
    gap:clamp(20px,3vw,40px);
  }
  .page-about .about-stop-year{
    position:sticky;
    top:20px;
    align-self:start;
    flex-direction:column;
    align-items:flex-start;
    gap:14px;
    padding-left:24px;
  }
  .page-about .about-anno{writing-mode:vertical-rl;}
}

@media (min-width:1100px){
  .page-about .about-roles{grid-template-columns:repeat(4,minmax(0,1fr));}
  .page-about .about-cover-items{grid-template-columns:repeat(4,minmax(0,1fr));}
}

@media (hover:none){
  .page-about .about-role-note{
    max-height:none;
    opacity:1;
    margin-top:12px;
  }
}

@media (prefers-reduced-motion:reduce){
  .page-about .about-role,
  .page-about .about-role-note,
  .page-about .about-link{
    transition:none;
  }
  .page-about .about-role:hover,
  .page-about .about-role:focus-within{transform:none;}
  .page-about .about-link:hover,
  .page-about .about-link:focus-visible{padding-left:18px;}
}