.page-about{
  --about-max:1180px;
  --about-gutter:clamp(16px,3.2vw,36px);
  --about-warm:rgba(232,178,60,.26);
  display:block;
  padding-top:calc(var(--top-h) + 16px);
  padding-inline:var(--about-gutter);
  font-family:var(--font-body);
  color:var(--cream);
  overflow-x:clip;
}

.page-about > section{
  max-width:var(--about-max);
  margin-inline:auto;
}

.page-about > section + section{
  margin-top:clamp(56px,7vw,100px);
}

.page-about h1,
.page-about h2,
.page-about h3{
  font-family:var(--font-display);
  font-weight:800;
  letter-spacing:-.01em;
  line-height:1.28;
  margin:0;
}

.page-about h1{ font-size:clamp(28px,5vw,46px); color:#FFF6E6; }
.page-about h2{ font-size:clamp(23px,3.2vw,32px); color:var(--cream); }
.page-about h3{ font-size:clamp(16px,1.8vw,19px); color:var(--cream); }
.page-about p{ margin:0; line-height:1.78; }

.page-about .section-head{
  display:grid;
  gap:6px;
  margin-bottom:clamp(18px,2.4vw,28px);
  padding-bottom:14px;
  border-bottom:1px solid var(--line-soft);
}

.page-about .section-head__note{
  color:var(--mist);
  font-size:13px;
}

.page-about .label{
  font-size:12px;
  letter-spacing:.1em;
  color:var(--mist);
}

.page-about .media{
  position:relative;
  margin:0;
  overflow:hidden;
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:linear-gradient(150deg,var(--night),var(--ink));
}

.page-about .media img{
  display:block;
  width:100%;
  height:100%;
  object-fit:cover;
}

.page-about .panel{
  border-radius:var(--r-lg);
  padding:clamp(20px,2.6vw,30px);
}

.page-about .panel--cream{
  color:var(--brown);
  background:var(--cream);
}

.page-about .panel--cream h3{ color:var(--brown); }
.page-about .panel--cream .label{ color:rgba(34,22,9,.6); }

/* ---------- 首屏 ---------- */
.about-hero{
  position:relative;
  overflow:hidden;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:clamp(20px,3.2vw,40px);
  background:
    radial-gradient(120% 90% at 84% 6%, rgba(232,178,60,.16), transparent 58%),
    radial-gradient(80% 70% at 4% 100%, rgba(53,223,210,.10), transparent 60%),
    linear-gradient(112deg,#0E1730 0%,#060A18 58%,#060A18 100%);
}

.about-hero::after{
  content:"";
  position:absolute;
  left:-12%;
  right:-12%;
  top:37%;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(232,178,60,.72),rgba(53,223,210,.4),transparent);
  transform:rotate(-3.2deg);
  pointer-events:none;
}

.about-crumbs{
  position:relative;
  z-index:1;
}

.about-crumbs__list{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  list-style:none;
  margin:0 0 20px;
  padding:0;
  font-size:13px;
  color:var(--mist);
}

.about-crumbs__list li::after{
  content:"/";
  margin-left:10px;
  color:var(--line);
}

.about-crumbs__list li:last-child::after{ content:none; }
.about-crumbs__list a{ color:var(--mist); text-decoration:none; border-bottom:1px solid rgba(159,179,200,.35); }
.about-crumbs__list a:hover{ color:var(--cyan); border-bottom-color:var(--cyan); }
.about-crumbs__list [aria-current="page"]{ color:var(--cream); }

.about-hero__grid{
  position:relative;
  z-index:1;
  display:grid;
  gap:26px;
  grid-template-columns:1fr;
}

.about-axis{
  border-left:1px solid var(--about-warm);
  padding-left:14px;
}

.about-axis__label{
  color:var(--gold);
  margin-bottom:12px;
}

.about-axis__list{
  display:grid;
  gap:14px;
  list-style:none;
  margin:0;
  padding:0;
}

.about-axis__list li{ display:grid; gap:1px; }

.about-axis__year{
  font-family:var(--font-data);
  font-size:22px;
  font-weight:600;
  font-variant-numeric:tabular-nums;
  letter-spacing:.02em;
  color:var(--gold);
  line-height:1.1;
}

.about-axis__note{
  font-size:12px;
  line-height:1.5;
  color:var(--mist);
}

.about-hero__eyebrow{ color:var(--gold); margin-bottom:12px; }

.about-hero__lead{
  margin-top:16px;
  font-size:clamp(15px,1.6vw,17px);
  color:#D9E3EE;
  max-width:60ch;
}

.about-hero__meta{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:12px;
  margin-top:24px;
  padding-top:18px;
  border-top:1px solid var(--line);
}

.about-hero__meta > div{ display:grid; gap:4px; }

.about-hero__num{
  font-size:clamp(24px,3vw,32px);
  font-weight:600;
  color:var(--gold);
  line-height:1.05;
}

.about-hero__actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:26px;
}

.about-hero__media{ aspect-ratio:5 / 6; }

/* ---------- 三件事 ---------- */
.about-scope__grid{
  display:grid;
  gap:16px;
  grid-template-columns:1fr;
}

.about-scope__main{
  display:flex;
  flex-direction:column;
  gap:14px;
  justify-content:space-between;
}

.about-scope__side{
  display:flex;
  flex-direction:column;
  gap:12px;
  background:linear-gradient(158deg,rgba(14,23,48,.96),rgba(6,10,24,.72));
  border:1px solid var(--line);
}

.about-scope__idx{
  display:inline-block;
  color:var(--gold);
}

.about-scope__idx--cyan{ color:var(--cyan); }

.about-scope__side p,
.about-scope__main p{
  font-size:15px;
}

/* ---------- 发展轨迹 ---------- */
.about-track__figure{
  aspect-ratio:2 / 1;
  margin-bottom:clamp(20px,3vw,32px);
}

.about-timeline{
  list-style:none;
  margin:0;
  padding:0;
}

.about-timeline__item{
  display:grid;
  gap:8px 24px;
  grid-template-columns:1fr;
  padding:22px 0;
  border-top:1px solid var(--line-soft);
  position:relative;
}

.about-timeline__item:last-child{ border-bottom:1px solid var(--line-soft); }

.about-timeline__year{
  font-size:26px;
  font-weight:600;
  color:var(--gold);
  line-height:1.1;
}

.about-timeline__body{ display:grid; gap:8px; }
.about-timeline__body p{ font-size:15px; color:#D9E3EE; }

.about-timeline__more{
  border-left:2px solid var(--line);
  padding-left:14px;
  display:grid;
  gap:6px;
}

.about-timeline__more .label{ color:var(--cyan); }
.about-timeline__more p{ font-size:14px; color:var(--mist); }

/* ---------- 团队 ---------- */
.about-team__list{
  display:grid;
  gap:14px;
  grid-template-columns:1fr;
  list-style:none;
  margin:0;
  padding:0;
}

.about-team__item{
  display:grid;
  grid-template-columns:60px minmax(0,1fr);
  gap:6px 18px;
  align-items:start;
  padding:22px;
  border:1px solid var(--line);
  border-left:3px solid var(--gold);
  border-radius:var(--r-md);
  background:linear-gradient(158deg,rgba(14,23,48,.92),rgba(6,10,24,.6));
  transition:border-color .3s var(--ease),transform .3s var(--ease);
}

.about-team__item:hover{
  border-left-color:var(--cyan);
  transform:translateY(-2px);
}

.about-team__no{
  font-size:38px;
  font-weight:600;
  line-height:1;
  color:var(--gold);
}

.about-team__info{ display:grid; gap:10px; }
.about-team__info p{ font-size:14.5px; color:#D9E3EE; }

.about-team__out{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  gap:8px;
  font-size:13px;
  color:var(--mist);
  padding-top:10px;
  border-top:1px dashed var(--line);
}

.about-team__out .label{ color:var(--cyan); }

/* ---------- 校验流程 ---------- */
.about-steps{
  display:grid;
  gap:18px;
  grid-template-columns:1fr;
  list-style:none;
  margin:0;
  padding:0;
}

.about-steps__item{
  position:relative;
  display:grid;
  gap:10px;
  padding:24px 22px;
  border:1px solid var(--line);
  border-radius:var(--r-md);
  background:linear-gradient(180deg,rgba(14,23,48,.85),rgba(6,10,24,.5));
}

.about-steps__item::before{
  content:"";
  position:absolute;
  left:0;
  top:22px;
  bottom:22px;
  width:2px;
  background:linear-gradient(180deg,var(--gold),rgba(53,223,210,.55));
  border-radius:var(--r-sm);
}

.about-steps__no{
  font-size:30px;
  font-weight:600;
  color:var(--cyan);
  line-height:1;
}

.about-steps__item p{ font-size:14.5px; color:#D9E3EE; }

/* ---------- 视觉根源 ---------- */
.about-contour{
  margin-bottom:clamp(18px,2.6vw,28px);
}

.about-contour svg{
  display:block;
  width:100%;
  height:clamp(38px,5vw,60px);
}

.about-region__grid{
  display:grid;
  gap:26px;
  grid-template-columns:1fr;
  align-items:start;
}

.about-region__label{ color:var(--ember); }

.about-region__copy{ display:grid; gap:16px; }

.about-region__copy p{
  font-size:15px;
  color:#D9E3EE;
  max-width:62ch;
}

.about-region__note{
  display:grid;
  gap:6px;
  padding:16px 0 0;
  border-top:1px solid var(--line-soft);
  font-size:14px;
  color:var(--mist);
}

.about-region__note .label{ color:var(--gold); }

.about-region__media{ aspect-ratio:16 / 9; }

/* ---------- 差异点 ---------- */
.about-why__list{
  display:grid;
  gap:0;
  margin:0;
}

.about-why__row{
  display:grid;
  gap:8px 28px;
  grid-template-columns:1fr;
  padding:22px 0;
  border-top:1px solid var(--line-soft);
}

.about-why__row:last-child{ border-bottom:1px solid var(--line-soft); }

.about-why__row dt{
  font-family:var(--font-display);
  font-weight:800;
  font-size:17px;
  color:var(--gold);
  letter-spacing:.02em;
}

.about-why__row dd{
  margin:0;
  font-size:15px;
  line-height:1.78;
  color:#D9E3EE;
  max-width:64ch;
}

/* ---------- 供稿与合作 ---------- */
.about-contrib__grid{
  display:grid;
  gap:26px;
  grid-template-columns:1fr;
  align-items:start;
  padding:clamp(22px,3vw,36px);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  background:
    radial-gradient(90% 120% at 100% 0%, rgba(53,223,210,.12), transparent 55%),
    linear-gradient(160deg,rgba(14,23,48,.94),rgba(6,10,24,.76));
}

.about-contrib__copy{ display:grid; gap:16px; }

.about-contrib__label{ color:var(--cyan); }

.about-contrib__copy p{ font-size:15px; color:#D9E3EE; max-width:62ch; }

.about-contrib__actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:6px;
}

.about-contrib__aside{
  display:grid;
  gap:14px;
  background:rgba(255,255,255,.06);
  border:1px solid var(--glass-2);
}

.about-contrib__list{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  gap:12px;
}

.about-contrib__list li{
  padding-bottom:12px;
  border-bottom:1px dashed var(--line);
}

.about-contrib__list li:last-child{ border-bottom:none; padding-bottom:0; }

.about-contrib__list a{
  color:var(--cream);
  text-decoration:none;
  font-size:14px;
  line-height:1.65;
  display:block;
}

.about-contrib__list a:hover{
  color:var(--cyan);
}

/* ---------- 响应式 ---------- */
@media (min-width:620px){
  .about-timeline__item{
    grid-template-columns:88px minmax(0,1.2fr) minmax(0,.8fr);
    align-items:start;
  }

  .about-timeline__item:last-child{ border-bottom:1px solid var(--line-soft); }

  .about-why__row{
    grid-template-columns:150px minmax(0,1fr);
    align-items:baseline;
  }
}

@media (min-width:760px){
  .about-scope__grid{
    grid-template-columns:repeat(12,minmax(0,1fr));
  }

  .about-scope__main{ grid-column:span 7; }

  .about-scope__side{ grid-column:span 5; }

  .about-team__list{
    grid-template-columns:repeat(2,minmax(0,1fr));
  }

  .about-steps{
    position:relative;
    grid-template-columns:repeat(3,minmax(0,1fr));
    gap:22px;
  }

  .about-steps::before{
    content:"";
    position:absolute;
    left:4%;
    right:4%;
    top:38px;
    height:1px;
    background:linear-gradient(90deg,rgba(232,178,60,.5),rgba(53,223,210,.35),rgba(232,178,60,.5));
    z-index:0;
  }

  .about-steps__item{ z-index:1; }
}

@media (min-width:900px){
  .about-hero__grid{
    grid-template-columns:112px minmax(0,1.4fr) minmax(240px,.8fr);
    gap:clamp(20px,3vw,40px);
    align-items:start;
  }

  .about-hero__media{ align-self:stretch; aspect-ratio:auto; min-height:100%; }

  .about-region__grid{
    grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);
    gap:clamp(24px,3.4vw,44px);
  }

  .about-contrib__grid{
    grid-template-columns:minmax(0,1.3fr) minmax(260px,.8fr);
    gap:clamp(24px,3.4vw,44px);
  }
}

@media (max-width:899px){
  .about-axis{
    border-left:none;
    padding-left:0;
    border-top:1px solid var(--about-warm);
    padding-top:12px;
  }

  .about-axis__list{
    grid-auto-flow:column;
    grid-auto-columns:minmax(132px,1fr);
    overflow-x:auto;
    padding-bottom:6px;
    scrollbar-width:thin;
  }
}

@media (hover:hover) and (min-width:900px){
  .about-timeline__more{
    max-height:0;
    opacity:0;
    overflow:hidden;
    transition:max-height .42s var(--ease),opacity .3s var(--ease);
  }

  .about-timeline__item:hover .about-timeline__more,
  .about-timeline__item:focus-within .about-timeline__more{
    max-height:240px;
    opacity:1;
  }
}

@media (prefers-reduced-motion:reduce){
  .page-about .about-team__item,
  .page-about .about-timeline__more{
    transition:none;
  }
}