.page-about{
  background: var(--ink-900);
  color: var(--text);
  --ab-pad: clamp(46px, 7vw, 96px);
  --ab-gap: clamp(22px, 3.2vw, 44px);
}

.page-about .ab-link{
  color: var(--gold-light);
  text-decoration: none;
  border-bottom: 1px solid rgba(198, 161, 91, 0.45);
  padding-bottom: 1px;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-about .ab-link:hover,
.page-about .ab-link:focus-visible{
  color: #fff;
  border-color: var(--gold-light);
}

/* ---------- 首屏 ---------- */
.page-about .ab-hero{
  position: relative;
  overflow: hidden;
  padding: clamp(24px, 3.6vw, 44px) 0 clamp(42px, 6vw, 76px);
  background:
    radial-gradient(120% 92% at 80% 4%, rgba(198, 161, 91, 0.16), transparent 58%),
    radial-gradient(84% 74% at 2% 100%, rgba(143, 185, 201, 0.10), transparent 62%),
    var(--ink-900);
}

.page-about .ab-hero::before{
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(90deg, rgba(51, 64, 77, 0.35) 0 1px, transparent 1px 120px);
  mask-image: linear-gradient(180deg, rgba(0,0,0,0.5), transparent 70%);
  -webkit-mask-image: linear-gradient(180deg, rgba(0,0,0,0.5), transparent 70%);
}

.page-about .ab-hero__inner{
  position: relative;
  display: grid;
  gap: var(--ab-gap);
}

.page-about .ab-hero__crumbs{
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  margin-bottom: clamp(18px, 2.6vw, 28px);
}

.page-about .ab-hero__crumbs a{
  color: var(--muted);
  text-decoration: none;
}

.page-about .ab-hero__crumbs a:hover{
  color: var(--gold-light);
}

.page-about .ab-hero__kick{
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-about .ab-hero__kick::before{
  content: "";
  width: 36px;
  height: 1px;
  background: var(--gold-grad);
  flex: none;
}

.page-about .ab-hero__title{
  margin: 0 0 0.55em;
  font-family: var(--font-display);
  font-size: clamp(32px, 5.2vw, 60px);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--text-strong);
  max-width: 15em;
}

.page-about .ab-hero__lead{
  margin: 0;
  max-width: 44em;
  font-size: clamp(15px, 1.55vw, 17.5px);
  line-height: 1.85;
  color: var(--text);
}

.page-about .ab-hero__actions{
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 32px);
}

.page-about .ab-facts-panel{
  position: relative;
  padding: clamp(18px, 2.4vw, 26px);
  background: linear-gradient(160deg, rgba(35, 44, 54, 0.94), rgba(15, 20, 26, 0.94));
  border: 1px solid var(--line-500);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
}

.page-about .ab-facts-panel::before{
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gold-grad);
}

.page-about .ab-facts-panel__title{
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-about .ab-facts{
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .ab-facts__row{
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  padding: 10px 0;
  border-bottom: 1px dashed rgba(51, 64, 77, 0.85);
  font-size: 13.5px;
}

.page-about .ab-facts__row:last-child{
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .ab-facts__k{
  color: var(--muted);
}

.page-about .ab-facts__v{
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--gold-light);
  white-space: nowrap;
}

/* ---------- 章节骨架 ---------- */
.page-about .ab-sec{
  padding: var(--ab-pad) 0;
  border-top: 1px solid rgba(51, 64, 77, 0.65);
}

.page-about .ab-sec--tint{
  background: linear-gradient(180deg, rgba(15, 20, 26, 0.92), rgba(7, 9, 12, 0.92));
}

.page-about .ab-spread{
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(18px, 2.6vw, 30px);
}

.page-about .ab-spread__side{
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 14px;
  border-bottom: 1px solid rgba(51, 64, 77, 0.8);
}

.page-about .ab-spread__num{
  font-family: var(--font-mono);
  font-size: clamp(30px, 4.4vw, 44px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  background: var(--gold-grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.page-about .ab-spread__tag{
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-about .ab-spread__body{
  min-width: 0;
}

.page-about .ab-head{
  max-width: 54em;
  margin-bottom: clamp(20px, 3vw, 34px);
}

.page-about .ab-head__title{
  margin: 0 0 0.65em;
  font-family: var(--font-display);
  font-size: clamp(22px, 3vw, 33px);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--text-strong);
}

.page-about .ab-head__note{
  margin: 0;
  padding-left: 14px;
  border-left: 2px solid rgba(198, 161, 91, 0.55);
  font-size: clamp(13.5px, 1.45vw, 15.5px);
  line-height: 1.8;
  color: var(--muted);
}

.page-about .ab-p{
  margin: 0 0 1.05em;
  max-width: 42em;
  font-size: clamp(15px, 1.5vw, 16.8px);
  line-height: 1.85;
  color: var(--text);
}

.page-about .ab-p:last-child{
  margin-bottom: 0;
}

.page-about .ab-p strong{
  color: var(--gold-light);
  font-weight: 600;
}

/* ---------- 错位两栏 ---------- */
.page-about .ab-cols{
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3.5vw, 42px);
}

/* ---------- 图像 ---------- */
.page-about .ab-figure{
  position: relative;
  margin: 0;
  border: 1px solid var(--line-500);
  background: var(--panel-700);
  overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
}

.page-about .ab-figure::after{
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(128deg, rgba(198, 161, 91, 0.18), transparent 44%, rgba(143, 185, 201, 0.12));
}

.page-about .ab-figure__img{
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .ab-figure__cap{
  padding: 10px 14px 12px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  border-top: 1px solid rgba(51, 64, 77, 0.7);
}

/* ---------- 数字条 ---------- */
.page-about .ab-stats{
  list-style: none;
  margin: clamp(24px, 3.5vw, 38px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line-500);
  border: 1px solid var(--line-500);
}

.page-about .ab-stats__item{
  background: var(--ink-800);
  padding: clamp(14px, 2vw, 20px) clamp(12px, 1.8vw, 18px);
}

.page-about .ab-stats__num{
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(21px, 2.9vw, 29px);
  font-weight: 700;
  line-height: 1.1;
  color: var(--gold-light);
}

.page-about .ab-stats__unit{
  font-size: 0.55em;
  margin-left: 2px;
  color: var(--gold);
}

.page-about .ab-stats__label{
  display: block;
  margin-top: 6px;
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

/* ---------- 团队分工标签页 ---------- */
.page-about .ab-tabs{
  position: relative;
}

.page-about .ab-tabs__radio{
  position: absolute;
  top: 0;
  left: 0;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-about .ab-tabs__nav{
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-bottom: 14px;
  border-bottom: 1px solid rgba(51, 64, 77, 0.85);
}

.page-about .ab-tabs__label{
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 9px 14px;
  cursor: pointer;
  font-size: 13.5px;
  line-height: 1.4;
  color: var(--text);
  background: var(--ink-800);
  border: 1px solid var(--line-500);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%);
  transition: color 0.2s var(--ease), background 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-about .ab-tabs__label span{
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.page-about .ab-tabs__label:hover{
  border-color: var(--gold);
  color: var(--gold-light);
}

.page-about .ab-tabs__panels{
  padding-top: clamp(18px, 2.6vw, 28px);
}

.page-about .ab-tabs__panel{
  display: none;
}

.page-about #abt-1:checked ~ .ab-tabs__nav .ab-tabs__label:nth-of-type(1),
.page-about #abt-2:checked ~ .ab-tabs__nav .ab-tabs__label:nth-of-type(2),
.page-about #abt-3:checked ~ .ab-tabs__nav .ab-tabs__label:nth-of-type(3),
.page-about #abt-4:checked ~ .ab-tabs__nav .ab-tabs__label:nth-of-type(4){
  background: var(--gold-grad);
  border-color: var(--gold-light);
  color: var(--ink-900);
  font-weight: 700;
}

.page-about #abt-1:checked ~ .ab-tabs__nav .ab-tabs__label:nth-of-type(1) span,
.page-about #abt-2:checked ~ .ab-tabs__nav .ab-tabs__label:nth-of-type(2) span,
.page-about #abt-3:checked ~ .ab-tabs__nav .ab-tabs__label:nth-of-type(3) span,
.page-about #abt-4:checked ~ .ab-tabs__nav .ab-tabs__label:nth-of-type(4) span{
  color: rgba(7, 9, 12, 0.66);
}

.page-about #abt-1:checked ~ .ab-tabs__panels .ab-tabs__panel:nth-child(1),
.page-about #abt-2:checked ~ .ab-tabs__panels .ab-tabs__panel:nth-child(2),
.page-about #abt-3:checked ~ .ab-tabs__panels .ab-tabs__panel:nth-child(3),
.page-about #abt-4:checked ~ .ab-tabs__panels .ab-tabs__panel:nth-child(4){
  display: block;
  animation: ab-fade 0.24s var(--ease) both;
}

.page-about #abt-1:focus-visible ~ .ab-tabs__nav .ab-tabs__label:nth-of-type(1),
.page-about #abt-2:focus-visible ~ .ab-tabs__nav .ab-tabs__label:nth-of-type(2),
.page-about #abt-3:focus-visible ~ .ab-tabs__nav .ab-tabs__label:nth-of-type(3),
.page-about #abt-4:focus-visible ~ .ab-tabs__nav .ab-tabs__label:nth-of-type(4){
  outline: 2px solid var(--ice);
  outline-offset: 2px;
}

@keyframes ab-fade{
  from{ opacity: 0; transform: translateY(6px); }
  to{ opacity: 1; transform: translateY(0); }
}

.page-about .ab-team{
  display: grid;
  gap: 6px 26px;
  padding: clamp(18px, 2.4vw, 26px);
  border: 1px solid var(--line-500);
  border-left: 2px solid var(--gold);
  background: linear-gradient(150deg, rgba(35, 44, 54, 0.68), rgba(15, 20, 26, 0.68));
}

.page-about .ab-team__count{
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-about .ab-team__count span{
  font-size: 20px;
  letter-spacing: 0;
  color: var(--gold-light);
  font-weight: 700;
  margin-right: 4px;
}

.page-about .ab-team__title{
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(18px, 2.2vw, 22px);
  font-weight: 800;
  color: var(--text-strong);
}

.page-about .ab-team__desc{
  margin: 4px 0 0;
  max-width: 46em;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--text);
}

/* ---------- 审核三步 ---------- */
.page-about .ab-steps{
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--line-500);
  border: 1px solid var(--line-500);
}

.page-about .ab-steps__item{
  position: relative;
  background: var(--ink-800);
  padding: clamp(18px, 2.4vw, 26px);
  transition: background 0.2s var(--ease);
}

.page-about .ab-steps__item::after{
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: var(--gold-grad);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.24s var(--ease);
}

.page-about .ab-steps__item:hover{
  background: var(--panel-700);
}

.page-about .ab-steps__item:hover::after{
  transform: scaleX(1);
}

.page-about .ab-steps__code{
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.24em;
  color: var(--gold);
}

.page-about .ab-steps__title{
  margin: 0 0 0.5em;
  font-family: var(--font-display);
  font-size: clamp(17px, 2vw, 20px);
  font-weight: 800;
  color: var(--text-strong);
}

.page-about .ab-steps__desc{
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text);
}

/* ---------- 时间线 ---------- */
.page-about .ab-timeline{
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .ab-timeline::before{
  content: "";
  position: absolute;
  top: 8px;
  bottom: 10px;
  left: 4px;
  width: 1px;
  background: linear-gradient(180deg, rgba(198, 161, 91, 0.75), rgba(51, 64, 77, 0.45));
}

.page-about .ab-timeline__item{
  position: relative;
  padding: 0 0 clamp(22px, 3vw, 30px) 26px;
}

.page-about .ab-timeline__item:last-child{
  padding-bottom: 0;
}

.page-about .ab-timeline__item::before{
  content: "";
  position: absolute;
  top: 6px;
  left: 0;
  width: 9px;
  height: 9px;
  background: var(--gold);
  transform: rotate(45deg);
  box-shadow: 0 0 0 4px rgba(7, 9, 12, 0.92);
}

.page-about .ab-timeline__year{
  display: block;
  margin-bottom: 4px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.18em;
  color: var(--gold);
}

.page-about .ab-timeline__title{
  margin: 0 0 0.4em;
  font-family: var(--font-display);
  font-size: clamp(16.5px, 2vw, 19px);
  font-weight: 800;
  color: var(--text-strong);
}

.page-about .ab-timeline__desc{
  margin: 0;
  max-width: 42em;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text);
}

/* ---------- 适配清单 ---------- */
.page-about .ab-check{
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--line-500);
  border: 1px solid var(--line-500);
}

.page-about .ab-check__item{
  position: relative;
  background: var(--ink-800);
}

.page-about .ab-check__box{
  position: absolute;
  left: 16px;
  top: 19px;
  width: 16px;
  height: 16px;
  margin: 0;
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  background: var(--ink-900);
  border: 1px solid var(--line-500);
  transition: background 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-about .ab-check__box:checked{
  background: var(--gold-grad);
  border-color: var(--gold-light);
}

.page-about .ab-check__box:focus-visible{
  outline: 2px solid var(--ice);
  outline-offset: 2px;
}

.page-about .ab-check__label{
  display: block;
  padding: 16px 18px 16px 46px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text);
  cursor: pointer;
  transition: color 0.18s var(--ease);
}

.page-about .ab-check__box:checked + .ab-check__label{
  color: var(--muted);
}

.page-about .ab-check__note{
  margin: clamp(16px, 2.4vw, 22px) 0 0;
  max-width: 46em;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 收束 ---------- */
.page-about .ab-sec--cta{
  background:
    radial-gradient(90% 120% at 88% 0%, rgba(198, 161, 91, 0.14), transparent 62%),
    var(--ink-900);
}

.page-about .ab-cta{
  display: grid;
  gap: clamp(22px, 3.2vw, 38px);
  padding: clamp(24px, 3.6vw, 44px);
  border: 1px solid var(--line-500);
  background: linear-gradient(140deg, rgba(35, 44, 54, 0.78), rgba(15, 20, 26, 0.9));
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), calc(100% - 26px) 100%, 0 100%);
}

.page-about .ab-cta__kick{
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-about .ab-cta__title{
  margin: 0 0 0.6em;
  font-family: var(--font-display);
  font-size: clamp(20px, 2.8vw, 29px);
  font-weight: 800;
  line-height: 1.32;
  color: var(--text-strong);
}

.page-about .ab-cta__desc{
  margin: 0;
  max-width: 44em;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--text);
}

.page-about .ab-cta__links{
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-self: start;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px){
  .page-about .ab-stats{
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

@media (min-width: 860px){
  .page-about .ab-hero__inner{
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 0.85fr);
    align-items: end;
    gap: clamp(32px, 5vw, 72px);
  }

  .page-about .ab-spread{
    grid-template-columns: 132px minmax(0, 1fr);
    gap: clamp(26px, 4vw, 56px);
  }

  .page-about .ab-spread__side{
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    align-self: start;
    position: sticky;
    top: var(--rail-top);
    padding: 0 0 0 16px;
    border-bottom: 0;
    border-left: 1px solid rgba(198, 161, 91, 0.42);
  }

  .page-about .ab-cols--7-5{
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }

  .page-about .ab-cols--5-7{
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }

  .page-about .ab-cols--6-6{
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-about .ab-steps{
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .ab-timeline::before{
    left: 118px;
  }

  .page-about .ab-timeline__item{
    display: grid;
    grid-template-columns: 100px minmax(0, 1fr);
    gap: clamp(22px, 3vw, 40px);
    padding-left: 0;
  }

  .page-about .ab-timeline__item::before{
    left: 114px;
    top: 9px;
  }

  .page-about .ab-timeline__year{
    text-align: right;
    margin-bottom: 0;
    padding-top: 2px;
  }

  .page-about .ab-team{
    grid-template-columns: minmax(0, 1fr);
    padding: clamp(22px, 2.8vw, 30px);
  }

  .page-about .ab-cta{
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 0.9fr);
    align-items: center;
  }
}

@media (min-width: 1040px){
  .page-about .ab-stats{
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }
}

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