.page-about{
  --ab-gap: clamp(20px, 4vw, 40px);
  --ab-sec-pad: clamp(38px, 6vw, 76px);
  display: block;
  overflow-x: clip;
  padding-bottom: clamp(48px, 8vw, 96px);
}

.page-about img{
  max-width: 100%;
  height: auto;
  display: block;
}

/* ---------- 面包屑 ---------- */
.page-about .crumbs{
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  max-width: var(--ly-wrap);
  margin: 0 auto;
  padding: calc(var(--cmd-h) + 22px) var(--ly-gutter) 0;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--ly-mist);
}
.page-about .crumbs a{
  color: var(--ly-mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .25s var(--ly-ease), border-color .25s var(--ly-ease);
}
.page-about .crumbs a:hover,
.page-about .crumbs a:focus-visible{
  color: var(--ly-cyan-soft);
  border-bottom-color: var(--ly-line-strong);
}
.page-about .crumbs [aria-current="page"]{
  color: var(--ly-white);
}

/* ---------- 首屏 ---------- */
.page-about .ab-hero{
  position: relative;
  max-width: var(--ly-wrap);
  margin: 0 auto;
  padding: clamp(26px, 4.5vw, 46px) var(--ly-gutter) clamp(30px, 5vw, 58px);
  display: grid;
  gap: var(--ab-gap);
}
.page-about .ab-hero::before{
  content: "";
  position: absolute;
  inset: 8% -6% 12% -6%;
  background: linear-gradient(104deg, transparent 47.4%, var(--ly-line) 47.5%, transparent 47.9%);
  pointer-events: none;
  z-index: 0;
}
.page-about .ab-hero__text,
.page-about .ab-hero__media{
  position: relative;
  z-index: 1;
}
.page-about .ab-hero__title{
  margin: 16px 0 0;
  font-family: var(--ly-font-display);
  font-weight: 300;
  font-size: clamp(36px, 7vw, 82px);
  line-height: 1.06;
  letter-spacing: -.01em;
  color: var(--ly-white);
}
.page-about .ab-hero__title em{
  font-style: normal;
  color: var(--ly-coral);
}
.page-about .ab-hero__lede{
  max-width: 34em;
  margin: 20px 0 0;
  font-size: clamp(16px, 1.6vw, 17px);
  line-height: 1.78;
  color: var(--ly-white);
}
.page-about .ab-hero__stats{
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 28px;
  padding-top: 18px;
  border-top: 1px solid var(--ly-line);
}
.page-about .ab-stat{
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.page-about .ab-stat__num{
  font-family: var(--ly-font-mono);
  font-size: clamp(20px, 3vw, 28px);
  line-height: 1;
  color: var(--ly-cyan);
}
.page-about .ab-stat__unit{
  font-family: var(--ly-font-mono);
  font-size: 12px;
  color: var(--ly-cyan-soft);
  margin-left: 4px;
}
.page-about .ab-stat__label{
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--ly-mist);
}
.page-about .ab-hero__media{
  margin: 0;
}
.page-about .ab-hero__media img{
  width: 100%;
  aspect-ratio: 14 / 9;
  object-fit: cover;
  border: 1px solid var(--ly-line);
  border-radius: var(--ly-radius);
}
.page-about .ab-hero__media figcaption,
.page-about .ab-path__media figcaption,
.page-about .ab-local__media figcaption{
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--ly-mist);
}

/* ---------- 索引条 ---------- */
.page-about .ab-index{
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
  max-width: var(--ly-wrap);
  margin: 0 auto;
  padding: 0 var(--ly-gutter) clamp(8px, 2vw, 18px);
}
.page-about .ab-index a{
  display: inline-flex;
  align-items: center;
  padding: 9px 13px;
  font-family: var(--ly-font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  text-decoration: none;
  color: var(--ly-mist);
  background: var(--ly-glass);
  border: 1px solid var(--ly-line);
  border-radius: var(--ly-radius);
  transition: color .25s var(--ly-ease), border-color .25s var(--ly-ease), transform .25s var(--ly-ease);
}
.page-about .ab-index a:hover,
.page-about .ab-index a:focus-visible,
.page-about .ab-index a[aria-current="location"]{
  color: var(--ly-cyan);
  border-color: var(--ly-line-strong);
  transform: translateY(-2px);
}

/* ---------- 章节骨架 ---------- */
.page-about .ab-sec{
  max-width: var(--ly-wrap);
  margin: 0 auto;
  padding: var(--ab-sec-pad) var(--ly-gutter) 0;
}
.page-about .ab-sec__head{
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--ly-line);
}
.page-about .ab-sec__num{
  font-family: var(--ly-font-mono);
  font-size: 13px;
  letter-spacing: .16em;
  color: var(--ly-cyan);
  padding-bottom: 3px;
  border-bottom: 2px solid var(--ly-cyan);
}
.page-about .ab-sec__title{
  margin: 0;
  font-family: var(--ly-font-display);
  font-weight: 300;
  font-size: clamp(23px, 3.6vw, 38px);
  line-height: 1.24;
  color: var(--ly-white);
}
.page-about .ab-sec__lede{
  max-width: 34em;
  margin: 20px 0 0;
  font-size: 16px;
  line-height: 1.78;
  color: var(--ly-white);
}

/* ---------- 三条线卡片 ---------- */
.page-about .ab-cards{
  display: grid;
  gap: 16px;
  margin-top: 28px;
}
.page-about .ab-card{
  position: relative;
  padding: 24px 20px 20px;
  background: linear-gradient(180deg, rgba(15,58,92,.58), rgba(8,39,66,.9));
  border: 1px solid var(--ly-line);
  border-left: 2px solid var(--ly-cyan);
  border-radius: var(--ly-radius);
}
.page-about .ab-card__no{
  position: absolute;
  top: 13px;
  right: 15px;
  font-family: var(--ly-font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--ly-cyan);
}
.page-about .ab-card__title{
  margin: 0;
  font-family: var(--ly-font-display);
  font-weight: 400;
  font-size: 20px;
  color: var(--ly-white);
}
.page-about .ab-card__count{
  margin: 8px 0 0;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--ly-cyan-soft);
}
.page-about .ab-card__text{
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ly-white);
}
.page-about .ab-tags{
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}
.page-about .ab-tags .tag{
  font-size: 12px;
  letter-spacing: .06em;
}

/* ---------- 解读四步 ---------- */
.page-about .ab-path{
  display: grid;
  gap: 26px;
  margin-top: 28px;
}
.page-about .ab-path__media{
  margin: 0;
}
.page-about .ab-path__media img{
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border: 1px solid var(--ly-line);
  border-radius: var(--ly-radius);
}
.page-about .ab-steps{
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-about .ab-step{
  position: relative;
  padding: 0 0 24px 48px;
}
.page-about .ab-step:last-child{
  padding-bottom: 0;
}
.page-about .ab-step__no{
  position: absolute;
  left: 0;
  top: 0;
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  font-family: var(--ly-font-mono);
  font-size: 12px;
  color: var(--ly-ink);
  background: var(--ly-cyan);
  border-radius: 50%;
}
.page-about .ab-step::after{
  content: "";
  position: absolute;
  left: 15px;
  top: 36px;
  bottom: 8px;
  width: 1px;
  background: var(--ly-line);
}
.page-about .ab-step:last-child::after{
  display: none;
}
.page-about .ab-step__title{
  margin: 2px 0 0;
  font-family: var(--ly-font-display);
  font-weight: 400;
  font-size: 17px;
  color: var(--ly-white);
}
.page-about .ab-step p{
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ly-white);
}

/* ---------- 产出规模 ---------- */
.page-about .ab-metrics{
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: 28px;
  background: var(--ly-line);
  border: 1px solid var(--ly-line);
  border-radius: var(--ly-radius);
  overflow: hidden;
}
.page-about .ab-metric{
  padding: 20px 18px;
  background: var(--ly-deep);
}
.page-about .ab-metric__value{
  margin: 0;
  font-family: var(--ly-font-mono);
  font-size: clamp(24px, 4vw, 38px);
  line-height: 1.05;
  color: var(--ly-cyan);
}
.page-about .ab-metric__unit{
  font-size: .5em;
  margin-left: .25em;
  color: var(--ly-cyan-soft);
}
.page-about .ab-metric__label{
  margin: 10px 0 0;
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--ly-mist);
}
.page-about .ab-scale{
  display: grid;
  gap: 1px;
  margin-top: 22px;
  background: var(--ly-line);
  border: 1px solid var(--ly-line);
  border-radius: var(--ly-radius);
  overflow: hidden;
}
.page-about .ab-scale__item{
  padding: 18px;
  background: var(--ly-deep-2);
}
.page-about .ab-scale__text{
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ly-white);
}
.page-about .ab-scale__text strong{
  display: block;
  margin-bottom: 6px;
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--ly-cyan-soft);
}
.page-about .ab-scale__bar{
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 14px;
}
.page-about .ab-scale__bar .bar{
  flex: 1 1 auto;
  height: 6px;
  background: rgba(124,246,228,.12);
  border-radius: 999px;
  overflow: hidden;
}
.page-about .ab-scale__bar .bar__fill{
  display: block;
  height: 100%;
  width: 100%;
  transform-origin: left center;
  transform: scaleX(var(--v, 0));
  background: linear-gradient(90deg, var(--ly-cyan-soft), var(--ly-cyan));
  transition: transform .6s var(--ly-ease);
}
.page-about .ab-scale__num{
  flex: 0 0 auto;
  font-size: 15px;
  color: var(--ly-cyan);
}

/* ---------- 本地协作 ---------- */
.page-about .ab-local{
  display: grid;
  gap: 24px;
  margin-top: 28px;
}
.page-about .ab-local__media{
  margin: 0;
}
.page-about .ab-local__media img{
  width: 100%;
  aspect-ratio: 10 / 7;
  object-fit: cover;
  border: 1px solid var(--ly-line);
  border-radius: var(--ly-radius);
}
.page-about .ab-local__addr{
  margin: 0;
  padding: 14px 16px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--ly-white);
  background: var(--ly-glass);
  border: 1px solid var(--ly-line);
  border-left: 2px solid var(--ly-coral);
  border-radius: var(--ly-radius);
}
.page-about .ab-local__addr .index-label{
  display: block;
  margin-bottom: 6px;
  color: var(--ly-coral-soft);
}
.page-about .ab-local__lede{
  margin: 18px 0 0;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ly-white);
}
.page-about .ab-partner{
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--ly-line);
}
.page-about .ab-partner__title{
  margin: 0;
  font-family: var(--ly-font-display);
  font-weight: 400;
  font-size: 16px;
  letter-spacing: .02em;
  color: var(--ly-white);
}
.page-about .ab-partner__title .num{
  color: var(--ly-cyan);
}
.page-about .ab-partner p{
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ly-white);
}

/* ---------- 时间轴 ---------- */
.page-about .ab-timeline{
  position: relative;
  margin-top: 30px;
  padding-left: 26px;
}
.page-about .ab-timeline::before{
  content: "";
  position: absolute;
  left: 6px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(180deg, var(--ly-cyan), rgba(23,240,210,.05));
}
.page-about .ab-node{
  position: relative;
  margin-bottom: 12px;
  background: var(--ly-glass);
  border: 1px solid var(--ly-line);
  border-radius: var(--ly-radius);
}
.page-about .ab-node::before{
  content: "";
  position: absolute;
  left: -24px;
  top: 18px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--ly-cyan);
  box-shadow: 0 0 0 4px rgba(23,240,210,.14);
}
.page-about .ab-node summary{
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
}
.page-about .ab-node summary::-webkit-details-marker{
  display: none;
}
.page-about .ab-node summary::after{
  content: "+";
  margin-left: auto;
  font-family: var(--ly-font-mono);
  font-size: 16px;
  line-height: 1;
  color: var(--ly-cyan);
}
.page-about .ab-node[open] summary::after{
  content: "–";
}
.page-about .ab-node summary:focus-visible{
  outline: 2px solid var(--ly-cyan);
  outline-offset: 2px;
}
.page-about .ab-node__when{
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--ly-cyan);
}
.page-about .ab-node__what{
  font-family: var(--ly-font-display);
  font-size: 16px;
  color: var(--ly-white);
}
.page-about .ab-node__body{
  padding: 0 16px 16px;
}
.page-about .ab-node__body p{
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ly-white);
}

/* ---------- 收尾行动 ---------- */
.page-about .ab-cta{
  max-width: var(--ly-wrap);
  margin: clamp(44px, 7vw, 84px) auto 0;
  padding: 0 var(--ly-gutter);
}
.page-about .ab-cta__inner{
  position: relative;
  display: grid;
  gap: 20px;
  padding: clamp(24px, 4.5vw, 44px);
  border: 1px solid var(--ly-line-strong);
  border-radius: var(--ly-radius);
  background: linear-gradient(118deg, rgba(23,240,210,.12), rgba(255,106,61,.06) 58%, rgba(4,24,43,0) 100%);
}
.page-about .ab-cta__title{
  margin: 12px 0 0;
  font-family: var(--ly-font-display);
  font-weight: 300;
  font-size: clamp(22px, 3.4vw, 34px);
  line-height: 1.28;
  color: var(--ly-white);
}
.page-about .ab-cta__text p{
  margin: 12px 0 0;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ly-white);
}
.page-about .ab-cta__actions{
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.page-about .ab-cta__hint{
  margin: 0;
  font-size: 13px;
  color: var(--ly-mist);
}
.page-about .ab-cta__hint a{
  color: var(--ly-cyan-soft);
  text-decoration: none;
  border-bottom: 1px solid var(--ly-line-strong);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px){
  .page-about .ab-cards{
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .ab-metrics{
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-about .ab-scale{
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 960px){
  .page-about .ab-hero{
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
    gap: clamp(28px, 4vw, 56px);
  }
  .page-about .ab-cards{
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: start;
  }
  .page-about .ab-cards > :nth-child(2){
    transform: translateY(22px);
  }
  .page-about .ab-cards > :nth-child(3){
    transform: translateY(8px);
  }
  .page-about .ab-path{
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: clamp(30px, 4vw, 54px);
    align-items: start;
  }
  .page-about .ab-path__media{
    position: sticky;
    top: calc(var(--cmd-h) + 24px);
  }
  .page-about .ab-local{
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: clamp(28px, 4vw, 50px);
    align-items: start;
  }
  .page-about .ab-cta__inner{
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    align-items: center;
  }
  .page-about .ab-cta__actions{
    flex-direction: column;
    align-items: flex-start;
  }
  .page-about .ab-cta__hint{
    grid-column: 1 / -1;
  }
}

@media (prefers-reduced-motion: reduce){
  .page-about [data-reveal]{
    opacity: 1 !important;
    transform: none !important;
  }
  .page-about .ab-card,
  .page-about .ab-index a,
  .page-about .ab-scale__bar .bar__fill{
    transition: none !important;
  }
  .page-about .ab-cards > *{
    transform: none !important;
  }
}
</main>

.page-about {
  --v: inherit;
}