.page-about{
  --ab-rail:280px;
  --ab-ink-soft:#2C4453;
}

/* ---------- 首屏 ---------- */
.page-about .ab-hero{
  position:relative;
  isolation:isolate;
  overflow:hidden;
  background:var(--jn-shendai);
  color:var(--jn-yuebai);
}
.page-about .ab-hero__media{
  position:absolute;
  inset:0;
  z-index:0;
}
.page-about .ab-hero__media img{
  width:100%;
  height:100%;
  object-fit:cover;
  opacity:.34;
  filter:saturate(.66) contrast(1.06);
}
.page-about .ab-hero::after{
  content:"";
  position:absolute;
  inset:0;
  z-index:1;
  background:linear-gradient(178deg, rgba(20,40,51,.66) 0%, rgba(20,40,51,.88) 58%, var(--jn-shendai) 100%);
}
.page-about .ab-hero__grid{
  position:absolute;
  inset:0;
  z-index:1;
  pointer-events:none;
  background-image:linear-gradient(to right, rgba(244,247,249,.08) 1px, transparent 1px);
  background-size:clamp(64px,10vw,140px) 100%;
}
.page-about .ab-hero__inner{
  position:relative;
  z-index:2;
  padding:clamp(26px,5vw,44px) 0 clamp(40px,7vw,72px);
}
.page-about .ab-hero__crumb{
  margin-bottom:clamp(28px,6vw,64px);
  color:rgba(244,247,249,.62);
  font-family:var(--jn-mono);
  font-size:12px;
  letter-spacing:.08em;
}
.page-about .ab-hero__crumb .jn-breadcrumb__link{
  color:rgba(244,247,249,.86);
  text-decoration:none;
}
.page-about .ab-hero__crumb .jn-breadcrumb__link:hover{
  color:var(--jn-white);
  text-decoration:underline;
  text-underline-offset:4px;
}
.page-about .ab-hero__crumb .jn-breadcrumb__sep{
  padding:0 8px;
  color:rgba(244,247,249,.4);
}
.page-about .ab-hero__eyebrow{
  color:var(--jn-liujin);
  margin:0 0 18px;
}
.page-about .ab-hero__title{
  margin:0;
  font-family:var(--jn-serif);
  font-weight:300;
  font-size:clamp(32px,6.2vw,80px);
  line-height:1.1;
  letter-spacing:.005em;
  color:var(--jn-white);
  max-width:20ch;
}
.page-about .ab-hero__lead{
  margin:clamp(22px,3vw,34px) 0 0;
  max-width:62ch;
  font-size:clamp(15px,1.5vw,17px);
  line-height:1.92;
  color:rgba(244,247,249,.82);
}
.page-about .ab-hero__facts{
  list-style:none;
  margin:clamp(34px,6vw,64px) 0 0;
  padding:0;
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:clamp(14px,3vw,34px);
}
.page-about .ab-hero__facts li{
  padding-top:18px;
  border-top:1px solid rgba(244,247,249,.24);
  display:grid;
  gap:8px;
}
.page-about .ab-fact__num{
  font-family:var(--jn-mono);
  font-size:clamp(26px,3.6vw,44px);
  line-height:1;
  font-weight:500;
  color:var(--jn-white);
  letter-spacing:-.01em;
}
.page-about .ab-fact__num::after{
  content:"";
  display:block;
  width:26px;
  height:2px;
  margin-top:10px;
  background:var(--jn-zhusha);
}
.page-about .ab-fact__label{
  font-size:12px;
  line-height:1.7;
  letter-spacing:.06em;
  color:rgba(244,247,249,.66);
}

/* ---------- 工作台骨架 ---------- */
.page-about .ab-work{
  display:grid;
  gap:clamp(30px,5vw,60px);
  padding-top:clamp(44px,7vw,88px);
  padding-bottom:clamp(48px,8vw,96px);
}

/* ---------- 左侧索引 ---------- */
.page-about .ab-rail{
  display:grid;
  gap:clamp(22px,3vw,30px);
  align-content:start;
  min-width:0;
}
.page-about .ab-rail__label{
  margin:0;
  padding-bottom:12px;
  border-bottom:1px solid var(--jn-ink);
  font-family:var(--jn-mono);
  font-size:11px;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:var(--jn-ink);
}
.page-about .ab-spy{
  display:grid;
  gap:0;
}
.page-about .ab-spy__link{
  display:flex;
  align-items:baseline;
  gap:12px;
  padding:11px 4px 11px 14px;
  border-left:1px solid var(--jn-line);
  font-size:14px;
  color:var(--jn-muted);
  text-decoration:none;
  transition:color .25s var(--jn-ease), border-color .25s var(--jn-ease), background .25s var(--jn-ease);
}
.page-about .ab-spy__link:hover,
.page-about .ab-spy__link:focus-visible{
  color:var(--jn-ink);
  border-left-color:var(--jn-zhusha);
  background:var(--jn-white);
}
.page-about .ab-spy__link[aria-current="true"]{
  color:var(--jn-ink);
  border-left-color:var(--jn-zhusha);
  font-weight:600;
}
.page-about .ab-spy__num{
  font-family:var(--jn-mono);
  font-size:11px;
  letter-spacing:.1em;
  color:var(--jn-qinghui);
}
.page-about .ab-spy__link[aria-current="true"] .ab-spy__num{
  color:var(--jn-zhusha);
}

.page-about .ab-tl{
  border-top:1px solid var(--jn-line);
  padding-top:16px;
}
.page-about .ab-tl__head{
  margin:0 0 12px;
  font-family:var(--jn-mono);
  font-size:11px;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--jn-qinghui);
}
.page-about .ab-tl__list{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
}
.page-about .ab-tl__item{
  display:grid;
  grid-template-columns:52px minmax(0,1fr);
  gap:10px;
  padding:10px 0;
  border-bottom:1px solid var(--jn-line);
  font-size:13px;
  line-height:1.7;
}
.page-about .ab-tl__year{
  font-family:var(--jn-mono);
  font-size:12px;
  color:var(--jn-zhusha);
  letter-spacing:.04em;
}
.page-about .ab-tl__text{
  color:var(--ab-ink-soft);
}

/* ---------- 右侧正文 ---------- */
.page-about .ab-body{
  min-width:0;
}
.page-about .ab-chapter{
  padding:clamp(34px,5vw,58px) 0;
  border-top:1px solid var(--jn-line);
}
.page-about .ab-chapter:first-child{
  border-top:0;
  padding-top:0;
}
.page-about .ab-chapter__head{
  display:grid;
  gap:14px;
  margin-bottom:clamp(22px,3vw,36px);
}
.page-about .ab-chapter__no{
  margin:0;
  display:flex;
  align-items:center;
  gap:12px;
  font-family:var(--jn-mono);
  font-size:11px;
  letter-spacing:.2em;
  color:var(--jn-zhusha);
}
.page-about .ab-chapter__no::after{
  content:"";
  width:46px;
  height:1px;
  background:var(--jn-zhusha);
  opacity:.5;
}
.page-about .ab-chapter__title{
  margin:0;
  font-family:var(--jn-serif);
  font-weight:400;
  font-size:clamp(23px,3.1vw,38px);
  line-height:1.26;
  color:var(--jn-ink);
  max-width:22ch;
}
.page-about .ab-chapter__lead{
  margin:0;
  max-width:62ch;
  font-size:15px;
  line-height:1.9;
  color:var(--jn-muted);
}
.page-about .ab-prose{
  display:grid;
  gap:16px;
  max-width:64ch;
}
.page-about .ab-prose p{
  margin:0;
  font-size:15.5px;
  line-height:1.96;
  color:var(--ab-ink-soft);
}

/* ---------- 团队 ---------- */
.page-about .ab-team__media{
  margin:0 0 clamp(24px,3vw,34px);
}
.page-about .ab-team{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  gap:1px;
  background:var(--jn-line);
  border:1px solid var(--jn-line);
}
.page-about .ab-team__card{
  background:var(--jn-white);
  padding:clamp(20px,3vw,28px);
  display:grid;
  gap:9px;
  align-content:start;
  min-width:0;
  transition:background .28s var(--jn-ease);
}
.page-about .ab-team__card:hover{
  background:var(--jn-yuebai);
}
.page-about .ab-team__no{
  font-family:var(--jn-mono);
  font-size:11px;
  letter-spacing:.16em;
  color:var(--jn-zhusha);
}
.page-about .ab-team__name{
  margin:0;
  font-family:var(--jn-serif);
  font-weight:500;
  font-size:19px;
  line-height:1.4;
  color:var(--jn-ink);
}
.page-about .ab-team__count{
  margin:0;
  font-family:var(--jn-mono);
  font-size:13px;
  color:var(--jn-muted);
  padding-bottom:10px;
  border-bottom:1px solid var(--jn-line);
}
.page-about .ab-team__desc{
  margin:0;
  font-size:14px;
  line-height:1.88;
  color:var(--ab-ink-soft);
}

/* ---------- 合作生态 ---------- */
.page-about .ab-partners{
  background:var(--jn-daiqing);
  color:var(--jn-yuebai);
  padding:clamp(26px,4vw,48px);
  display:grid;
  gap:clamp(18px,3vw,26px);
  border-top:3px solid var(--jn-zhusha);
}
.page-about .ab-chapter__no--light{
  color:var(--jn-liujin);
}
.page-about .ab-chapter__no--light::after{
  background:var(--jn-liujin);
  opacity:.7;
}
.page-about .ab-chapter__title--light{
  color:var(--jn-white);
}
.page-about .ab-partners__lead{
  margin:0;
  max-width:64ch;
  font-size:15px;
  line-height:1.94;
  color:rgba(244,247,249,.84);
}
.page-about .ab-partners__stats{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:14px;
}
.page-about .ab-partners__stats li{
  display:grid;
  gap:6px;
  padding-top:14px;
  border-top:1px solid rgba(244,247,249,.26);
}
.page-about .ab-partners__num{
  font-family:var(--jn-mono);
  font-size:clamp(24px,3vw,36px);
  line-height:1;
  font-weight:500;
  color:var(--jn-white);
}
.page-about .ab-partners__cap{
  font-size:12px;
  letter-spacing:.06em;
  color:rgba(244,247,249,.66);
}
.page-about .ab-partners__media{
  margin:0;
  border:1px solid rgba(244,247,249,.18);
}
.page-about .ab-partners__media .jn-media__caption{
  color:rgba(244,247,249,.6);
  font-family:var(--jn-mono);
  font-size:11px;
}
.page-about .ab-partners__note{
  margin:0;
  max-width:64ch;
  font-size:14px;
  line-height:1.9;
  color:rgba(244,247,249,.72);
  padding-top:16px;
  border-top:1px solid rgba(244,247,249,.18);
}

/* ---------- 荣誉 ---------- */
.page-about .ab-awards{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  gap:0;
  border-top:1px solid var(--jn-line);
}
.page-about .ab-awards__item{
  padding:clamp(20px,3vw,28px) 0;
  border-bottom:1px solid var(--jn-line);
  display:grid;
  gap:10px;
  max-width:70ch;
}
.page-about .ab-awards__tag{
  justify-self:start;
  display:inline-block;
  padding:3px 10px;
  border:1px solid var(--jn-liujin);
  color:var(--jn-liujin);
  background:rgba(201,162,39,.08);
  font-family:var(--jn-mono);
  font-size:11px;
  letter-spacing:.14em;
}
.page-about .ab-awards__title{
  margin:0;
  font-family:var(--jn-serif);
  font-weight:500;
  font-size:clamp(18px,2.2vw,24px);
  line-height:1.44;
  color:var(--jn-ink);
}
.page-about .ab-awards__desc{
  margin:0;
  font-size:14.5px;
  line-height:1.9;
  color:var(--ab-ink-soft);
}

/* ---------- 结尾行动区 ---------- */
.page-about .ab-cta{
  margin-top:clamp(36px,5vw,64px);
  padding:clamp(28px,4vw,48px);
  background:var(--jn-white);
  border-left:3px solid var(--jn-zhusha);
  display:grid;
  gap:22px;
}
.page-about .ab-cta__title{
  margin:0 0 12px;
  font-family:var(--jn-serif);
  font-weight:400;
  font-size:clamp(22px,2.8vw,30px);
  line-height:1.34;
  color:var(--jn-ink);
}
.page-about .ab-cta__lead{
  margin:0;
  max-width:56ch;
  font-size:15px;
  line-height:1.9;
  color:var(--jn-muted);
}
.page-about .ab-cta__actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
}
.page-about .ab-cta__actions .jn-btn{
  text-decoration:none;
}
.page-about .ab-footnote{
  margin:clamp(28px,4vw,44px) 0 0;
  padding-top:18px;
  border-top:1px solid var(--jn-line);
  max-width:70ch;
}

/* ---------- 响应式 ---------- */
@media (min-width:640px){
  .page-about .ab-team{
    grid-template-columns:repeat(2,minmax(0,1fr));
  }
}

@media (min-width:760px){
  .page-about .ab-hero__facts{
    grid-template-columns:repeat(4,minmax(0,1fr));
  }
  .page-about .ab-cta{
    grid-template-columns:minmax(0,1fr) auto;
    align-items:end;
  }
}

@media (min-width:960px){
  .page-about .ab-work{
    grid-template-columns:var(--ab-rail) minmax(0,1fr);
  }
  .page-about .ab-rail{
    position:sticky;
    top:104px;
    align-self:start;
  }
}
</main>