.page-about{
  --a-space: clamp(3.25rem, 8vw, 7rem);
  --a-gap: clamp(1.25rem, 3vw, 2.5rem);
  --a-slab: linear-gradient(158deg, rgba(15,46,38,.86), rgba(7,26,21,.95));
  position: relative;
  padding-bottom: var(--a-space);
}

/* ---------- 面包屑 ---------- */
.page-about .breadcrumb{
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(.9rem, 2.5vw, 1.6rem) var(--pad-x) 0;
}
.page-about .breadcrumb ol{
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .5rem;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: .8125rem;
  letter-spacing: .04em;
  color: var(--moss);
}
.page-about .breadcrumb a{
  color: var(--moss);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .16s var(--ease), border-color .16s var(--ease);
}
.page-about .breadcrumb a:hover{
  color: var(--cyan);
  border-color: var(--line-cyan);
}
.page-about .breadcrumb li + li::before{
  content: "/";
  margin-right: .5rem;
  color: rgba(244,239,228,.28);
}

/* ---------- 首屏框景 ---------- */
.page-about .hero{
  padding-top: clamp(1rem, 3vw, 2rem);
}
.page-about .hero__frame{
  position: relative;
  overflow: hidden;
  padding: clamp(1.5rem, 4vw, 3.25rem);
  background: var(--a-slab);
}
.page-about .hero__frame::after{
  content: "";
  position: absolute;
  right: -8%;
  bottom: -34%;
  width: min(30rem, 62%);
  aspect-ratio: 1;
  background: radial-gradient(circle, rgba(245,165,36,.24), transparent 68%);
  pointer-events: none;
}
.page-about .hero__ruler{
  height: 12px;
  margin-bottom: clamp(1.25rem, 3vw, 2rem);
  background-image: repeating-linear-gradient(90deg, var(--line-gold) 0 1px, transparent 1px 16px);
  opacity: .7;
}
.page-about .hero__grid{
  position: relative;
  z-index: 1;
  align-items: start;
}
.page-about .hero__title{
  margin: 0 0 1.25rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.95rem, 5.4vw, 3.5rem);
  line-height: 1.06;
  letter-spacing: -.02em;
  color: var(--bone);
  text-wrap: balance;
}
.page-about .hero__actions{
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  margin-top: clamp(1.25rem, 3vw, 1.9rem);
}
.page-about .hero__side{
  padding: clamp(1.25rem, 3vw, 1.75rem);
  margin-top: clamp(1.5rem, 4vw, 0rem);
}

/* ---------- 通用章节文字 ---------- */
.page-about .about-sec{
  position: relative;
  padding-block: clamp(3rem, 7vw, 6rem);
}
.page-about .band{
  background: var(--a-slab);
  border-top: 1px solid var(--line-gold);
  border-bottom: 1px solid var(--line);
}
.page-about .band::before{
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg, var(--gold), rgba(245,165,36,0) 62%);
}
.page-about .section__head{
  max-width: 58ch;
  margin-bottom: clamp(1.5rem, 3vw, 2.5rem);
}
.page-about .eyebrow{
  margin: 0 0 .6rem;
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--gold);
}
.page-about .section__title{
  margin: 0 0 .8rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.55rem, 3.6vw, 2.5rem);
  line-height: 1.14;
  letter-spacing: -.01em;
  color: var(--bone);
}
.page-about .lede{
  margin: 0;
  font-size: 1.0625rem;
  line-height: 1.8;
  color: rgba(244,239,228,.9);
}
.page-about .measure{
  max-width: 64ch;
  font-size: 1rem;
  line-height: 1.8;
  color: rgba(244,239,228,.84);
}
.page-about .mono{
  font-family: var(--font-mono);
  letter-spacing: .02em;
}

/* ---------- 章节索引 ---------- */
.page-about .about-toc{
  margin-top: clamp(1.5rem, 4vw, 2.5rem);
  border-block: 1px solid var(--line);
  background: var(--glass);
  backdrop-filter: blur(6px);
}
.page-about .toc__inner{
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .5rem 1.25rem;
  padding-block: clamp(.85rem, 2vw, 1.2rem);
}
.page-about .toc__title{
  margin: 0;
  font-size: .6875rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--moss);
}
.page-about .toc__list{
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-about .toc__link{
  display: inline-block;
  padding: .3rem .75rem;
  font-size: .8125rem;
  color: var(--bone);
  text-decoration: none;
  border: 1px solid var(--line);
  border-radius: 99px;
  transition: color .18s var(--ease), background .18s var(--ease), border-color .18s var(--ease);
}
.page-about .toc__link:hover,
.page-about .toc__link[aria-current="true"]{
  color: var(--black);
  background: var(--cyan);
  border-color: var(--cyan);
}

/* ---------- 品牌速览 ---------- */
.page-about .facts{
  display: grid;
  gap: .6rem;
  margin: 0;
}
.page-about .facts__row{
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  padding-bottom: .5rem;
  border-bottom: 1px dashed var(--line);
}
.page-about .facts dt{
  font-size: .8125rem;
  color: var(--moss);
}
.page-about .facts dd{
  margin: 0;
  font-size: .9375rem;
  color: var(--bone);
}
.page-about .facts__note{
  margin: .9rem 0 0;
  font-size: .8125rem;
  color: var(--moss);
}

/* ---------- 图片容器 ---------- */
.page-about .figure__frame{
  position: relative;
  overflow: hidden;
  background: rgba(15,46,38,.55);
  border: 1px solid var(--line);
}
.page-about .figure__frame img{
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}
.page-about .figure__cap{
  margin-top: .7rem;
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .03em;
  color: var(--moss);
}

/* ---------- 01 起点 ---------- */
.page-about .origin__grid{
  align-items: start;
}
.page-about .origin__fig{
  margin: 0;
}
.page-about .origin__fig .figure__frame{
  aspect-ratio: 3 / 4;
}
.page-about .origin__fig .figure__frame img{
  height: 100%;
}
.page-about .origin__body p + p{
  margin-top: 1rem;
}
.page-about .chips{
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin: 1.35rem 0 0;
  padding: 0;
  list-style: none;
}
.page-about .chip{
  padding: .3rem .7rem;
  font-size: .8125rem;
  color: var(--moss);
  border: 1px solid var(--line);
  border-radius: 2px;
}
.page-about .chip:nth-child(2n){
  color: var(--gold);
  border-color: var(--line-gold);
}

/* ---------- 02 覆盖网格 ---------- */
.page-about .cover__fig{
  margin: 0 0 clamp(1.5rem, 3vw, 2.25rem);
}
.page-about .cover__fig .figure__frame{
  aspect-ratio: 16 / 9;
}
.page-about .cover__fig .figure__frame img{
  height: 100%;
}
.page-about .cover-grid{
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.page-about .cover-cell{
  display: flex;
  flex-direction: column;
  gap: .5rem;
  padding: clamp(1.05rem, 2.4vw, 1.55rem);
  background: var(--green-deep);
  transition: background .2s var(--ease);
}
.page-about .cover-cell:hover,
.page-about .cover-cell:focus-within{
  background: var(--green);
}
.page-about .cover-cell__name{
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.0625rem;
  color: var(--bone);
}
.page-about .cover-cell__tag{
  margin: 0;
  font-size: .6875rem;
  letter-spacing: .14em;
  color: var(--moss);
}
.page-about .cover-cell__desc{
  margin: 0;
  font-size: .875rem;
  line-height: 1.7;
  color: rgba(244,239,228,.72);
}
.page-about .density{
  height: 4px;
  margin-top: auto;
  background: rgba(244,239,228,.1);
  overflow: hidden;
}
.page-about .density i{
  display: block;
  height: 100%;
}
.page-about .cover-cell[data-density="high"] .density i{
  width: 100%;
  background: linear-gradient(90deg, var(--gold), var(--cyan));
}
.page-about .cover-cell[data-density="mid"] .density i{
  width: 62%;
  background: linear-gradient(90deg, var(--copper), var(--gold));
}
.page-about .cover-cell[data-density="low"] .density i{
  width: 32%;
  background: var(--copper);
}
.page-about .cover__foot{
  margin: clamp(1.25rem, 3vw, 2rem) 0 0;
  padding-left: 1rem;
  border-left: 2px solid var(--gold);
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--moss);
}

/* ---------- 03 团队 ---------- */
.page-about .team__grid{
  align-items: start;
}
.page-about .team__body p + p{
  margin-top: 1rem;
}
.page-about .scale{
  display: grid;
  gap: .9rem;
  margin: clamp(1.25rem, 3vw, 1.85rem) 0;
  padding: 0;
  list-style: none;
}
.page-about .scale__item{
  display: grid;
  grid-template-columns: 1fr auto;
  gap: .35rem .75rem;
  align-items: center;
}
.page-about .scale__label{
  font-size: .875rem;
  color: var(--bone);
}
.page-about .scale__bar{
  grid-column: 1 / -1;
  height: 8px;
  background: rgba(244,239,228,.08);
  border-radius: 99px;
  overflow: hidden;
}
.page-about .scale__bar i{
  display: block;
  height: 100%;
  border-radius: 99px;
  background: linear-gradient(90deg, var(--copper), var(--gold));
}
.page-about .scale__num{
  font-size: .8125rem;
  color: var(--moss);
  text-align: right;
}
.page-about .s100{ width: 100%; }
.page-about .s87{ width: 87%; }
.page-about .s60{ width: 60%; }
.page-about .s40{ width: 40%; }

.page-about .team__aside{
  margin-top: clamp(1.5rem, 4vw, 0rem);
}
.page-about .team__note{
  margin-top: 1.25rem;
  padding: clamp(1.15rem, 2.6vw, 1.6rem);
}

/* ---------- 04 内容体系 ---------- */
.page-about .lineup{
  display: grid;
  gap: clamp(1.15rem, 2.8vw, 1.85rem);
}
.page-about .lineup__card{
  padding: clamp(1.35rem, 3vw, 2.2rem);
}
.page-about .lineup__k{
  margin: 0 0 .55rem;
  font-size: .6875rem;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--gold);
}
.page-about .lineup__card .card__title{
  margin: 0 0 .7rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.125rem, 2.4vw, 1.45rem);
  line-height: 1.24;
  color: var(--bone);
}
.page-about .lineup__card .card__body{
  margin: 0;
  font-size: .9375rem;
  line-height: 1.82;
  color: rgba(244,239,228,.82);
}
.page-about .mini{
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
  margin: 1.1rem 0 0;
  padding: 0;
  list-style: none;
}
.page-about .mini li{
  padding: .25rem .6rem;
  font-family: var(--font-mono);
  font-size: .75rem;
  color: var(--gold);
  border: 1px solid var(--line-gold);
  border-radius: 2px;
}

/* ---------- 05 时间轴 ---------- */
.page-about .tl{
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-about .tl__item{
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0 1.15rem;
  padding: clamp(1.05rem, 2.4vw, 1.6rem) 0;
  border-top: 1px solid var(--line);
  transition: background .2s var(--ease), padding-left .2s var(--ease);
}
.page-about .tl__item:last-child{
  border-bottom: 1px solid var(--line);
}
.page-about .tl__item:hover,
.page-about .tl__item:focus-within{
  background: rgba(245,165,36,.06);
  padding-left: .7rem;
}
.page-about .tl__no{
  font-size: 1.45rem;
  line-height: 1;
  color: var(--line-gold);
  letter-spacing: .02em;
}
.page-about .tl__title{
  margin: 0 0 .4rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.125rem;
  color: var(--bone);
}
.page-about .tl__sum{
  margin: 0;
  font-size: .9375rem;
  line-height: 1.78;
  color: rgba(244,239,228,.8);
}
.page-about .tl__list{
  display: grid;
  gap: .4rem;
  margin: .75rem 0 0;
  padding: 0;
  list-style: none;
}
.page-about .tl__list li{
  position: relative;
  padding-left: 1rem;
  font-size: .875rem;
  line-height: 1.72;
  color: var(--moss);
}
.page-about .tl__list li::before{
  content: "";
  position: absolute;
  left: 0;
  top: .68em;
  width: 6px;
  height: 1px;
  background: var(--cyan);
}

/* ---------- 06 长期承诺 ---------- */
.page-about .promise-grid{
  display: grid;
  gap: clamp(1rem, 2.5vw, 1.6rem);
}
.page-about .promise{
  padding: clamp(1.15rem, 2.8vw, 1.7rem);
  border-left: 2px solid var(--gold);
  background: var(--glass);
}
.page-about .promise__v{
  display: block;
  margin-bottom: .6rem;
  font-size: .8125rem;
  color: var(--cyan);
}
.page-about .promise h3{
  margin: 0 0 .5rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.0625rem;
  color: var(--bone);
}
.page-about .promise p{
  margin: 0;
  font-size: .9375rem;
  line-height: 1.78;
  color: rgba(244,239,228,.8);
}
.page-about .promise-score{
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.25rem;
  margin-top: clamp(1.5rem, 3vw, 2.4rem);
  padding: clamp(1.2rem, 3vw, 1.75rem);
}
.page-about .promise-score__num{
  margin: 0;
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1;
  color: var(--cyan);
}
.page-about .promise-score p:last-child{
  flex: 1 1 16rem;
  margin: 0;
  font-size: .9375rem;
  line-height: 1.75;
  color: rgba(244,239,228,.82);
}

/* ---------- 结尾入口 ---------- */
.page-about .about-outro{
  padding-block: clamp(2.5rem, 6vw, 5rem);
}
.page-about .about-outro .section__title{
  max-width: 24ch;
}
.page-about .outro-links{
  display: grid;
  gap: .75rem;
  margin-top: clamp(1.25rem, 3vw, 1.9rem);
}
.page-about .outro-link{
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1.05rem 1.25rem;
  font-weight: 700;
  font-size: .9375rem;
  color: var(--bone);
  text-decoration: none;
  border: 1px solid var(--line);
  background: linear-gradient(120deg, rgba(15,46,38,.7), rgba(7,26,21,.72));
  transition: border-color .2s var(--ease), color .2s var(--ease), transform .2s var(--ease);
}
.page-about .outro-link:hover,
.page-about .outro-link:focus-visible{
  border-color: var(--cyan);
  color: var(--cyan);
  transform: translateY(-2px);
}
.page-about .outro-link span{
  font-family: var(--font-mono);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px){
  .page-about .cover-grid{
    grid-template-columns: repeat(2, 1fr);
  }
  .page-about .scale__item{
    grid-template-columns: 8.5rem 1fr 3.5rem;
  }
  .page-about .scale__bar{
    grid-column: auto;
  }
}

@media (min-width: 900px){
  .page-about .origin__body{
    grid-column: 7 / span 6;
  }
  .page-about .team__body{
    grid-column: 1 / span 6;
  }
  .page-about .team__aside{
    grid-column: 8 / span 5;
    margin-top: 0;
  }
  .page-about .team__aside{
    display: flex;
    flex-direction: column;
  }
  .page-about .lineup__card--a{ width: 72%; }
  .page-about .lineup__card--b{ width: 62%; margin-left: auto; }
  .page-about .lineup__card--c{ width: 78%; }

  .page-about .promise-grid{
    grid-template-columns: repeat(6, 1fr);
  }
  .page-about .promise:nth-child(1){ grid-column: 1 / span 3; }
  .page-about .promise:nth-child(2){ grid-column: 4 / span 3; margin-top: 2.25rem; }
  .page-about .promise:nth-child(3){ grid-column: 2 / span 4; }

  .page-about .outro-links{
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1000px){
  .page-about .cover-grid{
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (min-width: 1024px){
  .page-about .hero__lead{
    grid-column: 1 / span 7;
  }
  .page-about .hero__side{
    grid-column: 9 / span 4;
    margin-top: 0;
  }
}

@media (prefers-reduced-motion: reduce){
  .page-about *,
  .page-about *::before,
  .page-about *::after{
    transition: none !important;
    animation: none !important;
  }
}