.page-about{
  --about-line:1px solid var(--hair);
  --about-cut:18px;
  --about-measure:38em;
  background:var(--bg);
  color:var(--fg);
  padding-bottom:clamp(48px,9vw,120px);
}

/* ---------- 面包屑 ---------- */
.page-about .breadcrumb{
  margin:clamp(14px,3vw,24px) 0 0;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero{
  padding:clamp(24px,5vw,46px) 0 clamp(36px,7vw,72px);
  border-bottom:var(--about-line);
}
.page-about .about-hero__grid{
  display:grid;
  grid-template-columns:1fr;
  gap:clamp(28px,5vw,52px);
}
.page-about .about-hero h1{
  margin:.45rem 0 0;
  font-size:clamp(2rem,7.4vw,3.5rem);
  line-height:1.1;
  letter-spacing:-.02em;
  font-weight:800;
  max-width:15em;
}
.page-about .about-hero__lede{
  margin:clamp(18px,3.4vw,26px) 0 0;
  max-width:var(--about-measure);
  font-size:clamp(1rem,2.5vw,1.15rem);
  line-height:1.85;
  color:var(--fg-dim);
}
.page-about .about-hero__facts{
  border-top:2px solid var(--accent);
  padding-top:6px;
}
.page-about .about-hero__facts dl{
  margin:0;
  display:grid;
  gap:0;
}
.page-about .about-hero__facts div{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:16px;
  padding:13px 0;
  border-bottom:var(--about-line);
}
.page-about .about-hero__facts dt{
  font-size:var(--fs-14);
  color:var(--fg-dim);
  letter-spacing:.02em;
}
.page-about .about-hero__facts dd{
  margin:0;
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-size:var(--fs-21);
  font-weight:700;
  color:var(--data);
  letter-spacing:-.01em;
}

@media (min-width:920px){
  .page-about .about-hero__grid{
    grid-template-columns:minmax(0,1.5fr) minmax(0,.85fr);
    gap:clamp(48px,7vw,88px);
    align-items:end;
  }
}

/* ---------- 章节骨架 ---------- */
.page-about .about-section{
  padding:clamp(38px,7.5vw,96px) 0;
  border-bottom:var(--about-line);
}
.page-about .about-section:last-of-type{
  border-bottom:0;
  padding-bottom:clamp(20px,4vw,44px);
}
.page-about .about-h2{
  margin:.4rem 0 0;
  font-size:clamp(1.5rem,4.4vw,2.35rem);
  line-height:1.18;
  letter-spacing:-.02em;
  font-weight:800;
  max-width:20em;
}
.page-about .about-lede{
  margin:clamp(16px,3vw,24px) 0 0;
  max-width:var(--about-measure);
  font-size:var(--fs-17);
  line-height:1.85;
  color:var(--fg-dim);
}

/* ---------- 覆盖范围列表 ---------- */
.page-about .cover-list{
  margin:clamp(26px,5vw,44px) 0 0;
  padding:0;
  list-style:none;
  border-top:var(--about-line);
}
.page-about .cover-list li{
  display:grid;
  gap:6px;
  padding:18px 0;
  border-bottom:var(--about-line);
}
.page-about .cover-list__k{
  font-weight:700;
  font-size:var(--fs-17);
  color:var(--fg);
  letter-spacing:-.01em;
}
.page-about .cover-list__v{
  font-size:15px;
  line-height:1.8;
  color:var(--fg-dim);
}
@media (min-width:780px){
  .page-about .cover-list li{
    grid-template-columns:minmax(0,190px) minmax(0,1fr);
    gap:clamp(20px,4vw,56px);
    align-items:baseline;
    padding:22px 0;
  }
}

/* ---------- 图片框 ---------- */
.page-about .about-figure{
  margin:clamp(28px,5vw,46px) 0 0;
}
.page-about .about-figure img{
  display:block;
  width:100%;
  height:auto;
  max-width:100%;
  object-fit:cover;
  border-radius:2px;
}
.page-about .about-figure--square{
  margin-top:0;
}
.page-about .media-frame__cap{
  margin-top:10px;
  font-size:var(--fs-14);
  line-height:1.6;
  color:var(--fg-dim);
}

/* ---------- 团队分工 ---------- */
.page-about .team-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:clamp(16px,3vw,24px);
  margin-top:clamp(24px,4vw,36px);
}
.page-about .team-card{
  position:relative;
  overflow:hidden;
  background:var(--bg-raise);
  padding:clamp(22px,4vw,32px) clamp(20px,3.6vw,32px) clamp(22px,4vw,32px) clamp(30px,5vw,42px);
  clip-path:polygon(0 0,100% 0,100% calc(100% - var(--about-cut)),calc(100% - var(--about-cut)) 100%,0 100%);
}
.page-about .team-card::before{
  content:"";
  position:absolute;
  left:0;
  top:0;
  bottom:0;
  width:4px;
}
.page-about .team-card--epl::before{background:var(--epl);}
.page-about .team-card--csl::before{background:var(--csl);}
.page-about .team-card__name{
  margin:0;
  font-size:clamp(1.15rem,3.2vw,1.45rem);
  letter-spacing:-.01em;
  font-weight:700;
}
.page-about .team-card__text{
  margin:12px 0 0;
  font-size:15px;
  line-height:1.85;
  color:var(--fg-dim);
}
@media (min-width:860px){
  .page-about .team-grid{
    grid-template-columns:repeat(2,minmax(0,1fr));
    gap:clamp(20px,3vw,32px);
  }
}

.page-about .about-note{
  margin-top:clamp(24px,4vw,40px);
  padding-left:clamp(16px,3vw,26px);
  border-left:1px solid var(--hair);
}
.page-about .about-note__title{
  margin:0;
  font-size:var(--fs-17);
  font-weight:700;
  letter-spacing:-.01em;
}
.page-about .about-note p{
  margin:10px 0 0;
  max-width:var(--about-measure);
  font-size:15px;
  line-height:1.85;
  color:var(--fg-dim);
}

/* ---------- 赛季节奏 ---------- */
.page-about .season-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:clamp(30px,5vw,52px);
  margin-top:clamp(28px,5vw,46px);
}
@media (min-width:940px){
  .page-about .season-grid{
    grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);
    gap:clamp(40px,6vw,80px);
    align-items:start;
  }
}
.page-about .season-flow{
  position:relative;
  margin:0;
  padding:0 0 0 34px;
  list-style:none;
}
.page-about .season-flow::before{
  content:"";
  position:absolute;
  left:9px;
  top:8px;
  bottom:8px;
  width:1px;
  background:linear-gradient(180deg,var(--accent),var(--hair) 72%,transparent);
}
.page-about .season-step{
  position:relative;
  padding-bottom:clamp(24px,4.5vw,40px);
}
.page-about .season-step:last-child{
  padding-bottom:0;
}
.page-about .season-step::before{
  content:"";
  position:absolute;
  left:-30px;
  top:6px;
  width:11px;
  height:11px;
  border-radius:50%;
  background:var(--bg);
  border:2px solid var(--accent);
  box-sizing:border-box;
}
.page-about .season-step h3{
  margin:0;
  font-size:clamp(1.05rem,3vw,1.25rem);
  font-weight:700;
  letter-spacing:-.01em;
}
.page-about .season-step p{
  margin:8px 0 0;
  max-width:34em;
  font-size:15px;
  line-height:1.85;
  color:var(--fg-dim);
}

/* ---------- 版本时间线 ---------- */
.page-about .ver-list{
  margin-top:clamp(28px,5vw,44px);
  border-top:var(--about-line);
}
.page-about .ver{
  border-bottom:var(--about-line);
}
.page-about .ver__head{
  display:grid;
  grid-template-columns:auto minmax(0,1fr) auto;
  align-items:center;
  gap:clamp(12px,3vw,24px);
  padding:20px 0;
  cursor:pointer;
  list-style:none;
}
.page-about .ver__head::-webkit-details-marker{display:none;}
.page-about .ver__idx{
  font-family:var(--font-mono);
  font-size:var(--fs-14);
  color:var(--accent);
  letter-spacing:.06em;
}
.page-about .ver__title{
  font-size:clamp(1rem,2.8vw,1.25rem);
  font-weight:700;
  letter-spacing:-.01em;
  color:var(--fg);
}
.page-about .ver__cue{
  position:relative;
  width:14px;
  height:14px;
  flex:none;
}
.page-about .ver__cue::before,
.page-about .ver__cue::after{
  content:"";
  position:absolute;
  left:50%;
  top:50%;
  background:var(--fg-dim);
  transform:translate(-50%,-50%);
  transition:transform .2s var(--ease);
}
.page-about .ver__cue::before{width:13px;height:1.5px;}
.page-about .ver__cue::after{width:1.5px;height:13px;}
.page-about .ver[open] .ver__cue::after{transform:translate(-50%,-50%) scaleY(0);}
.page-about .ver[open] .ver__title{color:var(--accent);}
.page-about .ver__body{
  max-width:var(--about-measure);
  padding:0 0 24px;
}
.page-about .ver__body p{
  margin:0;
  font-size:15px;
  line-height:1.9;
  color:var(--fg-dim);
}

/* ---------- 标签 chips ---------- */
.page-about .chips{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin:clamp(22px,4vw,32px) 0 0;
  padding:0;
  list-style:none;
}
.page-about .chip{
  display:inline-flex;
  align-items:center;
  padding:9px 18px;
  border:1px solid var(--hair);
  border-radius:999px;
  font-size:var(--fs-14);
  font-weight:600;
  color:var(--fg-dim);
  text-decoration:none;
  transition:border-color .2s var(--ease),color .2s var(--ease),background-color .2s var(--ease);
}
.page-about .chip:hover,
.page-about .chip:focus-visible{
  border-color:var(--accent);
  color:var(--fg);
  background:rgba(255,106,31,.08);
}
.page-about .chip--epl{
  border-color:transparent;
  background:var(--epl);
  color:#fff;
}
.page-about .chip--csl{
  border-color:transparent;
  background:var(--csl);
  color:#fff;
}
.page-about .chip--epl:hover,
.page-about .chip--epl:focus-visible,
.page-about .chip--csl:hover,
.page-about .chip--csl:focus-visible{
  border-color:var(--accent);
  color:#fff;
}

.page-about .about-columns{
  margin-top:clamp(28px,5vw,44px);
}
.page-about .about-column{
  padding:0 0 22px;
  border-bottom:var(--about-line);
}
.page-about .about-column:last-child{
  border-bottom:0;
  padding-bottom:0;
}
.page-about .about-column h3{
  margin:0;
  font-size:var(--fs-17);
  font-weight:700;
  letter-spacing:-.01em;
}
.page-about .about-column p{
  margin:10px 0 0;
  font-size:15px;
  line-height:1.85;
  color:var(--fg-dim);
}

/* ---------- 数据与合作 ---------- */
.page-about .about-prose{
  margin-top:clamp(20px,4vw,30px);
  max-width:var(--about-measure);
}
.page-about .about-prose p{
  margin:0 0 18px;
  font-size:var(--fs-17);
  line-height:1.9;
  color:var(--fg-dim);
}
.page-about .about-prose p:last-child{
  margin-bottom:0;
}
.page-about .fact-row{
  display:grid;
  grid-template-columns:1fr;
  gap:0;
  margin:clamp(28px,5vw,44px) 0 0;
  padding:0;
  list-style:none;
  border-top:var(--about-line);
}
.page-about .fact-row li{
  display:flex;
  align-items:baseline;
  gap:14px;
  padding:18px 0;
  border-bottom:var(--about-line);
}
.page-about .fact-row__num{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-size:clamp(1.6rem,5vw,2.3rem);
  font-weight:700;
  line-height:1;
  color:var(--accent);
}
.page-about .fact-row__txt{
  font-size:15px;
  color:var(--fg-dim);
}
@media (min-width:760px){
  .page-about .fact-row{
    grid-template-columns:repeat(3,minmax(0,1fr));
  }
  .page-about .fact-row li{
    flex-direction:column;
    gap:10px;
    padding:22px 20px 22px 0;
    border-bottom:0;
    border-right:var(--about-line);
  }
  .page-about .fact-row li:last-child{
    border-right:0;
  }
}

/* ---------- 结尾合作入口 ---------- */
.page-about .about-cta{
  padding-top:clamp(46px,9vw,110px);
}
.page-about .about-cta__links{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:clamp(26px,4.5vw,38px);
}

/* ---------- 窄屏保护 ---------- */
@media (max-width:420px){
  .page-about .about-hero__facts dd{
    font-size:var(--fs-17);
  }
  .page-about .about-hero h1{
    font-size:clamp(1.75rem,8.6vw,2.2rem);
  }
  .page-about .ver__head{
    grid-template-columns:auto minmax(0,1fr);
    row-gap:6px;
  }
  .page-about .ver__cue{
    grid-column:2;
    justify-self:start;
  }
}
<<<END>>>