.page-about{
  --ab-index-w:172px;
  overflow-x:clip;
  padding-bottom:clamp(48px,8vw,96px);
}

.page-about .crumbs{margin-bottom:clamp(20px,3vw,34px)}

/* ---------- 首屏 ---------- */
.page-about .about-hero{
  position:relative;
  display:grid;
  gap:clamp(24px,4vw,40px);
  align-items:center;
  padding-bottom:clamp(28px,5vw,52px);
  border-bottom:1px solid var(--line);
}
.page-about .about-hero::before{
  content:"";
  position:absolute;
  top:-48px;
  right:-6%;
  width:min(560px,72vw);
  height:min(560px,72vw);
  background:radial-gradient(circle at 50% 50%, rgba(198,255,61,.13), rgba(198,255,61,0) 68%);
  pointer-events:none;
  z-index:0;
}
.page-about .about-hero__text,
.page-about .about-hero__figure{position:relative;z-index:1}

@media (min-width:900px){
  .page-about .about-hero{
    grid-template-columns:minmax(0,1.06fr) minmax(0,.94fr);
    gap:clamp(32px,4vw,56px);
  }
}

.page-about .about-hero__text .eyebrow{margin:0 0 14px}

.page-about h1{
  margin:0;
  max-width:11em;
  font-size:clamp(2rem,5.4vw,3.5rem);
  line-height:1.06;
  letter-spacing:-.02em;
  font-weight:900;
}

.page-about .lede{
  margin:18px 0 0;
  max-width:32em;
  font-size:clamp(.98rem,1.6vw,1.08rem);
  line-height:1.8;
  color:var(--paper);
}

.page-about .about-hero__facts{
  list-style:none;
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin:24px 0 0;
  padding:0;
}
.page-about .about-hero__facts li{
  font-family:var(--font-mono);
  font-size:.76rem;
  letter-spacing:.04em;
  color:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--r);
  padding:5px 10px;
  transition:border-color .16s var(--ease), color .16s var(--ease);
}
.page-about .about-hero__facts li:hover{border-color:var(--lime);color:var(--lime)}

.page-about .about-hero__figure{margin:0}
.page-about .figure{margin:clamp(26px,4vw,40px) 0 0}
.page-about .figure__media{
  border:1px solid var(--line);
  border-radius:var(--r);
  overflow:hidden;
}
.page-about .figure__media img{
  display:block;
  width:100%;
  height:auto;
  max-width:100%;
  object-fit:cover;
  filter:saturate(.82) contrast(1.02);
}
.page-about .figure__cap{
  margin:10px 0 0;
  font-family:var(--font-mono);
  font-size:.74rem;
  letter-spacing:.02em;
  line-height:1.6;
  color:var(--mute);
}

/* ---------- 主副栏与页内索引 ---------- */
.page-about .about-body{
  display:grid;
  gap:clamp(24px,4vw,48px);
  margin-top:clamp(28px,5vw,52px);
}
@media (min-width:960px){
  .page-about .about-body{
    grid-template-columns:var(--ab-index-w) minmax(0,1fr);
    gap:clamp(32px,5vw,72px);
    align-items:start;
  }
}

.page-about .about-index{
  display:flex;
  align-items:center;
  gap:12px;
  overflow-x:auto;
  padding-bottom:10px;
  border-bottom:1px solid var(--line);
  scrollbar-width:none;
}
.page-about .about-index::-webkit-scrollbar{display:none}
.page-about .about-index__t{display:none}
.page-about .about-index nav{display:flex;gap:6px;flex:0 0 auto}
.page-about .about-index a{
  display:inline-flex;
  align-items:baseline;
  gap:7px;
  white-space:nowrap;
  padding:6px 10px;
  border:1px solid transparent;
  border-radius:var(--r);
  font-size:.82rem;
  font-weight:700;
  letter-spacing:.02em;
  color:var(--mute);
  text-decoration:none;
  transition:color .16s var(--ease), border-color .16s var(--ease);
}
.page-about .about-index a span{
  font-family:var(--font-mono);
  font-size:.7rem;
  color:var(--line);
  transition:color .16s var(--ease);
}
.page-about .about-index a:hover{color:var(--paper);border-color:var(--line)}
.page-about .about-index a:hover span{color:var(--lime)}
.page-about .about-index a:focus-visible{outline:2px solid var(--lime);outline-offset:2px}

@media (min-width:960px){
  .page-about .about-index{
    display:block;
    position:sticky;
    top:84px;
    overflow:visible;
    padding-bottom:0;
    border-bottom:0;
  }
  .page-about .about-index__t{
    display:block;
    margin:0 0 12px;
    font-family:var(--font-mono);
    font-size:.72rem;
    letter-spacing:.16em;
    color:var(--mute);
  }
  .page-about .about-index nav{flex-direction:column;gap:2px}
  .page-about .about-index a{
    width:100%;
    white-space:normal;
    padding:8px 0 8px 12px;
    border:0;
    border-left:1px solid var(--line);
    border-radius:0;
    font-size:.86rem;
  }
  .page-about .about-index a:hover{border-left-color:var(--lime);color:var(--lime)}
}

/* ---------- 章节通用 ---------- */
.page-about .sec{
  padding:clamp(34px,5vw,58px) 0;
  border-bottom:1px solid var(--line);
}
.page-about .sec:first-child{padding-top:0}
.page-about .sec:last-child{border-bottom:0;padding-bottom:0}

.page-about .sec__n{
  margin:0 0 8px;
  font-family:var(--font-mono);
  font-weight:600;
  font-size:.8rem;
  letter-spacing:.16em;
  color:var(--lime);
}
.page-about .sec h2{
  margin:0 0 clamp(16px,2.4vw,22px);
  max-width:16em;
  font-size:clamp(1.45rem,3.4vw,2.15rem);
  line-height:1.2;
  letter-spacing:-.02em;
  font-weight:900;
}

.page-about .about-prose{
  max-width:36em;
  font-size:1rem;
  line-height:1.85;
  color:var(--paper);
}
.page-about .about-prose p{
  margin:0 0 1em;
  font-size:1rem;
  line-height:1.85;
  color:var(--paper);
}
.page-about .about-prose p:last-child{margin-bottom:0}
.page-about .about-prose a{
  color:var(--lime);
  text-decoration:none;
  border-bottom:1px solid rgba(198,255,61,.45);
  transition:border-color .16s var(--ease);
}
.page-about .about-prose a:hover{border-bottom-color:var(--lime)}

.page-about .pull{
  margin:clamp(24px,4vw,36px) 0;
  padding:2px 0 2px clamp(16px,2.4vw,24px);
  max-width:24em;
  border-left:3px solid var(--amber);
  font-size:clamp(1.1rem,2.6vw,1.5rem);
  font-weight:900;
  line-height:1.5;
  letter-spacing:-.01em;
  color:var(--paper);
}

.page-about .about-more{
  margin:clamp(20px,3vw,28px) 0 0;
  max-width:36em;
  font-size:.9rem;
  line-height:1.8;
  color:var(--mute);
}
.page-about .about-more a{
  color:var(--paper);
  text-decoration:none;
  border-bottom:1px solid var(--line);
  transition:color .16s var(--ease), border-color .16s var(--ease);
}
.page-about .about-more a:hover{color:var(--lime);border-bottom-color:var(--lime)}

.page-about .about-note{
  margin:clamp(20px,3vw,28px) 0 0;
  max-width:44em;
  padding:12px 14px;
  background:var(--glass);
  border-left:2px solid var(--line);
  border-radius:var(--r);
  font-size:.86rem;
  line-height:1.75;
  color:var(--mute);
}

/* ---------- 三组分工 ---------- */
.page-about .crew{
  display:grid;
  gap:clamp(20px,3vw,26px);
  margin:clamp(24px,4vw,34px) 0 0;
}
@media (min-width:780px){
  .page-about .crew{grid-template-columns:repeat(3,minmax(0,1fr));gap:0 30px}
}
.page-about .crew__item{
  position:relative;
  padding-top:20px;
  border-top:1px solid var(--line);
}
.page-about .crew__item::before{
  content:"";
  position:absolute;
  top:-4px;
  left:0;
  width:7px;
  height:7px;
  border-radius:50%;
  background:var(--lime);
  transition:background .16s var(--ease), transform .16s var(--ease);
}
.page-about .crew__item:hover::before{background:var(--amber);transform:scale(1.5)}

.page-about .crew__tag{
  margin:0 0 6px;
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.14em;
  color:var(--lime);
}
.page-about .crew__item h3{
  margin:0 0 12px;
  font-size:1.05rem;
  font-weight:900;
  line-height:1.35;
  letter-spacing:-.01em;
  color:var(--paper);
}
.page-about .crew__item ul{list-style:none;margin:0;padding:0}
.page-about .crew__item li{
  position:relative;
  padding-left:14px;
  margin-bottom:9px;
  font-size:.9rem;
  line-height:1.72;
  color:var(--mute);
}
.page-about .crew__item li:last-child{margin-bottom:0}
.page-about .crew__item li::before{
  content:"";
  position:absolute;
  left:0;
  top:.74em;
  width:5px;
  height:1px;
  background:var(--line);
}

/* ---------- 时间线 ---------- */
.page-about .tl{
  list-style:none;
  position:relative;
  margin:clamp(24px,4vw,34px) 0 0;
  padding:0 0 0 24px;
}
.page-about .tl::before{
  content:"";
  position:absolute;
  left:3px;
  top:16px;
  bottom:16px;
  width:1px;
  background:var(--line);
}
.page-about .tl__item{position:relative}
.page-about .tl__item::before{
  content:"";
  position:absolute;
  left:-25px;
  top:19px;
  width:9px;
  height:9px;
  border-radius:50%;
  background:var(--ink);
  border:1px solid var(--lime);
  transition:background .16s var(--ease);
}
.page-about .tl__item:hover::before{background:var(--lime)}

.page-about .tl__sum{
  display:flex;
  align-items:baseline;
  gap:clamp(12px,2vw,20px);
  padding:9px 0;
  list-style:none;
  cursor:pointer;
  transition:color .16s var(--ease);
}
.page-about .tl__sum::-webkit-details-marker{display:none}
.page-about .tl__sum::marker{content:""}
.page-about .tl__year{
  flex:0 0 auto;
  font-family:var(--font-mono);
  font-weight:600;
  font-size:clamp(1.4rem,4.4vw,2.2rem);
  line-height:1;
  letter-spacing:-.03em;
  color:var(--lime);
  transition:color .16s var(--ease);
}
.page-about details[open] .tl__year{color:var(--amber)}
.page-about .tl__title{
  flex:1;
  min-width:0;
  font-size:.98rem;
  font-weight:700;
  line-height:1.5;
  color:var(--paper);
  transition:color .16s var(--ease);
}
.page-about .tl__sum:hover .tl__title{color:var(--lime)}
.page-about .tl__hint{
  flex:0 0 auto;
  font-family:var(--font-mono);
  font-size:1rem;
  line-height:1;
  color:var(--mute);
  transition:transform .18s var(--ease), color .16s var(--ease);
}
.page-about .tl__sum:hover .tl__hint{color:var(--lime)}
.page-about details[open] .tl__hint{transform:rotate(45deg)}
.page-about .tl__body{padding:0 0 18px;max-width:34em}
.page-about .tl__body p{
  margin:0;
  font-size:.92rem;
  line-height:1.8;
  color:var(--mute);
}

/* ---------- 数据处理流程 ---------- */
.page-about .flow{
  list-style:none;
  max-width:40em;
  margin:clamp(24px,4vw,32px) 0 0;
  padding:0;
}
.page-about .flow li{
  display:grid;
  gap:4px 16px;
  padding:14px 0;
  border-top:1px solid var(--line);
}
.page-about .flow li:last-child{border-bottom:1px solid var(--line)}
@media (min-width:640px){
  .page-about .flow li{grid-template-columns:104px minmax(0,1fr);align-items:baseline}
}
.page-about .flow__k{
  font-family:var(--font-mono);
  font-size:.74rem;
  letter-spacing:.1em;
  color:var(--amber);
}
.page-about .flow li p{
  margin:0;
  font-size:.92rem;
  line-height:1.8;
  color:var(--paper);
}

/* ---------- 合作 ---------- */
.page-about .partner{
  display:grid;
  gap:14px;
  margin:clamp(22px,3vw,30px) 0;
}
@media (min-width:600px){
  .page-about .partner{grid-template-columns:repeat(2,minmax(0,1fr));max-width:32em}
}
.page-about .partner__stat{
  display:flex;
  align-items:baseline;
  gap:12px;
  padding:16px 18px;
  background:var(--glass);
  border:1px solid var(--glass-line);
  border-radius:var(--r);
  transition:border-color .16s var(--ease), transform .16s var(--ease);
}
.page-about .partner__stat:hover{border-color:var(--lime);transform:translateY(-2px)}
.page-about .partner__stat .num{
  flex:0 0 auto;
  font-family:var(--font-mono);
  font-size:2rem;
  font-weight:600;
  line-height:1;
  color:var(--lime);
}
.page-about .partner__stat p{
  margin:0;
  font-size:.84rem;
  line-height:1.6;
  color:var(--mute);
}

.page-about .about-cta{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin:clamp(24px,4vw,32px) 0 0;
}

@media (prefers-reduced-motion: reduce){
  .page-about *{
    transition:none !important;
    transform:none !important;
  }
}
<<<END>>>