.page-about{
  --about-rail:64px;
  background:var(--paper);
  color:var(--ink);
}

/* ---------- 首屏 ---------- */
.page-about .hero{
  position:relative;
  overflow:hidden;
  background:var(--ink-green);
  color:var(--paper);
}
.page-about .hero__media{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:cover;
  opacity:.42;
}
.page-about .hero__veil{
  position:absolute;
  inset:0;
  background:linear-gradient(158deg,rgba(14,59,46,.94) 0%,rgba(11,12,13,.88) 58%,rgba(200,16,46,.32) 100%);
}
.page-about .hero__inner{
  position:relative;
  padding-block:clamp(28px,5vw,48px) clamp(36px,6vw,72px);
}
.page-about .hero__crumb{
  margin-bottom:clamp(28px,5vw,56px);
}
.page-about .hero__kicker{
  margin:0 0 14px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--gold);
}
.page-about .hero__title{
  margin:0;
  font-size:clamp(38px,7.2vw,96px);
  line-height:1.02;
  letter-spacing:-.02em;
  font-weight:900;
}
.page-about .hero__lede{
  max-width:58ch;
  margin:20px 0 0;
  font-size:clamp(15px,1.6vw,18px);
  line-height:1.75;
  color:rgba(246,243,237,.86);
}
.page-about .hero__stats{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:1px;
  margin:clamp(28px,4vw,44px) 0 0;
  padding:0;
  list-style:none;
  background:rgba(246,243,237,.2);
  border-top:1px solid rgba(246,243,237,.28);
  border-bottom:1px solid rgba(246,243,237,.28);
}
.page-about .hero__stat{
  display:flex;
  flex-direction:column;
  gap:4px;
  padding:14px 12px;
  background:rgba(11,12,13,.42);
}
.page-about .hero__num{
  font-family:var(--font-mono);
  font-size:clamp(26px,4vw,40px);
  font-weight:700;
  line-height:1;
  letter-spacing:.04em;
  font-variant-numeric:tabular-nums;
  color:var(--gold);
}
.page-about .hero__cap{
  font-size:13px;
  color:rgba(246,243,237,.78);
}

/* ---------- 主副双栏 ---------- */
.page-about .ledger{
  display:grid;
  gap:clamp(28px,4vw,48px);
  padding-block:clamp(36px,6vw,72px);
}
.page-about .ledger__main{
  position:relative;
  min-width:0;
}

/* ---------- 章节 ---------- */
.page-about .chapter{
  position:relative;
  padding-bottom:clamp(28px,4vw,48px);
}
.page-about .chapter + .chapter{
  margin-top:clamp(24px,4vw,44px);
  border-top:1px solid var(--line);
  padding-top:clamp(24px,4vw,40px);
}
.page-about .chapter__year{
  margin:0 0 8px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.12em;
  color:var(--steel);
}
.page-about .section__index{
  margin:0 0 8px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.12em;
  color:var(--steel-dark);
  transition:color var(--dur) var(--ease);
}
.page-about .section.is-active .section__index{
  color:var(--flame);
}
.page-about .chapter__title{
  margin:0 0 16px;
  font-size:clamp(26px,4vw,42px);
  line-height:1.08;
  letter-spacing:-.015em;
  font-weight:900;
  color:var(--ink);
}
.page-about .chapter__body p{
  margin:0 0 14px;
  font-size:16px;
  line-height:1.78;
  max-width:66ch;
}
.page-about .chapter__lede{
  padding-left:14px;
  border-left:3px solid var(--gold);
  color:var(--steel-dark);
  font-size:15px;
}

/* ---------- 年份刻度 ---------- */
.page-about .years{
  display:flex;
  gap:8px;
  overflow-x:auto;
  padding:2px 0 14px;
  margin:24px 0 22px;
  border-bottom:1px solid var(--line);
  -webkit-overflow-scrolling:touch;
  scrollbar-width:thin;
}
.page-about .years__item{
  flex:0 0 auto;
  display:flex;
  flex-direction:column;
  gap:2px;
  min-width:86px;
  padding:10px 14px;
  background:var(--sand);
  border:1px solid var(--line);
  text-decoration:none;
  color:var(--ink);
  transition:background var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.page-about .years__item span{
  font-family:var(--font-mono);
  font-size:16px;
  font-weight:700;
  letter-spacing:.04em;
  font-variant-numeric:tabular-nums;
}
.page-about .years__item em{
  font-style:normal;
  font-size:11px;
  letter-spacing:.12em;
  color:var(--steel-dark);
}
.page-about .years__item:hover,
.page-about .years__item:focus-visible{
  background:var(--gold);
  border-color:var(--gold);
  outline:none;
}

/* ---------- 图文容器 ---------- */
.page-about .shot{
  margin:22px 0;
  border:1px solid var(--line);
  background:var(--ink-green);
}
.page-about .shot img{
  display:block;
  width:100%;
  height:auto;
  object-fit:cover;
}
.page-about .shot figcaption{
  padding:10px 14px;
  background:var(--paper);
  border-top:1px solid var(--line);
  font-size:12px;
  line-height:1.6;
  color:var(--steel);
}

/* ---------- 版本卡 ---------- */
.page-about .version{
  position:relative;
  margin:0 0 10px;
  padding:18px 18px 16px;
  background:#fff;
  border:1px solid var(--line);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 14px),calc(100% - 14px) 100%,0 100%);
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.page-about .version:hover{
  transform:translateX(4px);
  border-color:var(--gold);
}
.page-about .version__code{
  margin:0 0 6px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.12em;
  color:var(--gold);
}
.page-about .version__title{
  margin:0 0 8px;
  font-size:19px;
  font-weight:800;
  line-height:1.3;
  color:var(--ink);
}
.page-about .version__text{
  margin:0;
  font-size:15px;
  line-height:1.72;
  color:var(--steel-dark);
}
.page-about .version__gain{
  margin:12px 0 0;
  padding-top:10px;
  border-top:1px solid var(--line);
  font-size:14px;
  line-height:1.6;
  color:var(--ink-green);
}
.page-about .version__gain span{
  display:inline-block;
  margin-right:8px;
  padding:2px 7px;
  background:var(--gold);
  color:var(--ink);
  font-size:11px;
  letter-spacing:.12em;
  vertical-align:1px;
}

/* ---------- 值守数据 ---------- */
.page-about .ops{
  list-style:none;
  margin:24px 0 0;
  padding:0;
  display:grid;
  gap:1px;
  background:var(--line);
  border:1px solid var(--line);
}
.page-about .ops__item{
  padding:18px 16px;
  background:var(--sand);
}
.page-about .ops__num{
  display:block;
  font-family:var(--font-mono);
  font-size:clamp(24px,3.4vw,32px);
  font-weight:700;
  line-height:1.1;
  letter-spacing:.04em;
  font-variant-numeric:tabular-nums;
  color:var(--ink-green);
}
.page-about .ops__label{
  display:block;
  margin-top:4px;
  font-size:13px;
  letter-spacing:.06em;
  color:var(--flame);
}
.page-about .ops__text{
  margin:10px 0 0;
  font-size:14px;
  line-height:1.7;
  color:var(--steel-dark);
}

/* ---------- 团队 ---------- */
.page-about .team{
  display:grid;
  gap:22px;
}
.page-about .team__figure{
  margin:0;
}
.page-about .team__body p{
  margin:0 0 14px;
  font-size:16px;
  line-height:1.78;
  max-width:64ch;
}
.page-about .crew{
  list-style:none;
  margin:16px 0 18px;
  padding:0;
  border-top:1px solid var(--line);
}
.page-about .crew__row{
  display:grid;
  grid-template-columns:auto 1fr;
  gap:2px 14px;
  align-items:baseline;
  padding:14px 0;
  border-bottom:1px solid var(--line);
}
.page-about .crew__num{
  font-family:var(--font-mono);
  font-size:24px;
  font-weight:700;
  line-height:1;
  letter-spacing:.04em;
  font-variant-numeric:tabular-nums;
  color:var(--flame);
}
.page-about .crew__name{
  font-size:16px;
  font-weight:800;
  color:var(--ink-green);
}
.page-about .crew__text{
  grid-column:1 / -1;
  margin:4px 0 0;
  font-size:14px;
  line-height:1.7;
  color:var(--steel-dark);
}

/* ---------- 合作 ---------- */
.page-about .partners{
  list-style:none;
  margin:22px 0 0;
  padding:0;
  display:grid;
  gap:12px;
}
.page-about .partner{
  padding:16px 18px;
  background:var(--sand);
  border:1px solid var(--line);
  border-left:3px solid var(--gold);
}
.page-about .partner--award{
  background:var(--ink-green);
  border-color:var(--ink-green);
  border-left-color:var(--gold);
  color:var(--paper);
}
.page-about .partner__num{
  margin:0;
  font-family:var(--font-mono);
  font-size:20px;
  font-weight:700;
  letter-spacing:.04em;
  color:var(--ink-green);
}
.page-about .partner--award .partner__num{
  color:var(--gold);
}
.page-about .partner__name{
  margin:6px 0 6px;
  font-size:17px;
  font-weight:800;
  line-height:1.35;
}
.page-about .partner__text{
  margin:0;
  font-size:14px;
  line-height:1.7;
  color:var(--steel-dark);
}
.page-about .partner--award .partner__text{
  color:rgba(246,243,237,.82);
}

/* ---------- 侧栏摘要 ---------- */
.page-about .stage-card{
  padding:20px;
  background:var(--ink-green);
  border:1px solid var(--ink-green);
  color:var(--paper);
}
.page-about .stage-card__title{
  margin:0 0 14px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.14em;
  color:var(--gold);
}
.page-about .stage-card__list{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  gap:9px;
}
.page-about .stage-card__list li{
  display:flex;
  justify-content:space-between;
  align-items:baseline;
  gap:12px;
  padding-bottom:8px;
  border-bottom:1px solid rgba(246,243,237,.16);
  font-size:13px;
  color:rgba(246,243,237,.76);
}
.page-about .stage-card__list b{
  font-family:var(--font-mono);
  font-size:14px;
  font-weight:700;
  letter-spacing:.03em;
  color:var(--gold);
  white-space:nowrap;
}
.page-about .stage-card__note{
  margin:16px 0 12px;
  font-size:13px;
  line-height:1.7;
  color:rgba(246,243,237,.78);
}
.page-about .stage-card__link{
  display:inline-block;
  font-size:13px;
  letter-spacing:.04em;
  color:var(--gold);
  text-decoration:none;
  border-bottom:1px solid var(--gold);
  padding-bottom:2px;
}
.page-about .stage-card__link:hover,
.page-about .stage-card__link:focus-visible{
  color:var(--paper);
  border-bottom-color:var(--paper);
}

/* ---------- 收尾 ---------- */
.page-about .closing{
  margin-top:clamp(28px,5vw,56px);
  padding-block:clamp(36px,6vw,72px);
  background:var(--ink-green);
  color:var(--paper);
}
.page-about .closing__title{
  margin:0 0 12px;
  font-size:clamp(26px,4vw,40px);
  line-height:1.1;
  letter-spacing:-.015em;
  font-weight:900;
}
.page-about .closing__text{
  max-width:52ch;
  margin:0 0 22px;
  font-size:15px;
  line-height:1.75;
  color:rgba(246,243,237,.82);
}
.page-about .closing__links{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
}

/* ---------- 断点 ---------- */
@media (min-width:768px){
  .page-about .hero__stats{
    grid-template-columns:repeat(4,minmax(0,1fr));
  }
  .page-about .ledger__main{
    padding-left:88px;
  }
  .page-about .ledger__main::before{
    content:"";
    position:absolute;
    left:56px;
    top:4px;
    bottom:4px;
    width:1px;
    background:var(--line);
  }
  .page-about .chapter__year{
    position:absolute;
    left:-88px;
    top:6px;
    width:88px;
    margin:0;
    padding-right:20px;
    text-align:right;
    font-size:12px;
    letter-spacing:.06em;
    line-height:1.5;
    writing-mode:vertical-rl;
    text-orientation:mixed;
  }
  .page-about .ops{
    grid-template-columns:repeat(2,minmax(0,1fr));
  }
  .page-about .partners{
    grid-template-columns:repeat(2,minmax(0,1fr));
  }
  .page-about .partner--award{
    grid-column:1 / -1;
  }
}

@media (min-width:900px){
  .page-about .team{
    grid-template-columns:minmax(0,5fr) minmax(0,7fr);
    align-items:start;
  }
}

@media (min-width:1024px){
  .page-about .ledger{
    grid-template-columns:minmax(0,1fr) 320px;
    align-items:start;
  }
  .page-about .ledger__side{
    position:sticky;
    top:calc(var(--head-h) + 24px);
  }
}

@media (prefers-reduced-motion:reduce){
  .page-about .version,
  .page-about .years__item,
  .page-about .section__index{
    transition:none;
  }
  .page-about .version:hover{
    transform:none;
  }
}
<<<END>>>