.page-about .about-page{
  padding-block: 22px 72px;
  display: flex;
  flex-direction: column;
  gap: 52px;
}
.page-about .breadcrumbs{
  margin: 0 0 6px;
  font-size: var(--step-1);
}

/* ---------- 首屏：竖排大字 + 短叙事 + 图鉴 ---------- */
.page-about .about-hero{
  display: grid;
  gap: 26px;
  padding-bottom: 34px;
  border-bottom: var(--line);
}
.page-about .about-hero__title{
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1.02;
  letter-spacing: -0.02em;
}
.page-about .about-hero__title-main{
  font-size: clamp(44px, 12.5vw, 68px);
}
.page-about .about-hero__title-sub{
  font-size: var(--step-2);
  font-weight: 900;
  color: var(--mango-deep);
  letter-spacing: 0.02em;
}
.page-about .about-hero__body p{
  margin: 0 0 14px;
  max-width: 36em;
}
.page-about .about-hero__lead{
  font-size: var(--step-2);
  font-weight: 500;
  line-height: 1.7;
}
.page-about .about-hero__meta{
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 18px 0 22px !important;
}
.page-about .about-toc{
  border-top: var(--line);
  padding-top: 14px;
}
.page-about .about-toc ol{
  list-style: none;
  margin: 10px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2px 16px;
}
.page-about .about-toc a{
  display: block;
  padding: 7px 0;
  border-bottom: var(--hair);
  color: var(--ink);
  text-decoration: none;
  font-size: var(--step-1);
  font-variant-numeric: tabular-nums;
  transition: color 140ms var(--ease);
}
.page-about .about-toc a span{
  font-weight: 900;
  color: var(--mango);
  margin-right: 7px;
}
.page-about .about-toc a:hover,
.page-about .about-toc a:focus-visible{
  color: var(--mango-deep);
}
.page-about .about-hero__figure,
.page-about .about-timeline__figure,
.page-about .about-team__figure{
  margin: 0;
}
.page-about .about-hero__figure img,
.page-about .about-timeline__figure img,
.page-about .about-team__figure img{
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: var(--line);
  background: var(--apricot);
}
.page-about .img-frame__cap{
  margin-top: 8px;
  font-size: 13px;
  color: var(--pit);
}

/* ---------- 通用区块 ---------- */
.page-about .about-band{
  display: flex;
  flex-direction: column;
  gap: 22px;
}
.page-about .about-head{
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.page-about .about-head .section-title{
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(26px, 6vw, 44px);
  line-height: 1.16;
  letter-spacing: -0.02em;
  max-width: 18em;
}
.page-about .about-head__lead{
  margin: 0;
  max-width: 40em;
  color: var(--pit);
  font-size: var(--step-1);
  line-height: 1.8;
}

/* ---------- 三条主张 ---------- */
.page-about .about-claims{
  display: grid;
  border: var(--line);
  background: var(--apricot);
}
.page-about .about-claim{
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 22px 20px 26px;
  background: var(--paper);
  border-top: var(--line);
}
.page-about .about-claim:first-child{
  border-top: none;
}
.page-about .about-claim p{
  margin: 0;
  font-size: var(--step-1);
  line-height: 1.75;
  color: var(--pit);
}
.page-about .about-claim__num{
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--step-4);
  line-height: 1;
  color: var(--mango);
  font-variant-numeric: tabular-nums;
}
.page-about .about-claim__title{
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--step-3);
  letter-spacing: -0.01em;
  color: var(--ink);
}
.page-about .about-claim__how{
  border-top: var(--hair);
  padding-top: 11px;
  margin-top: auto !important;
}
.page-about .about-claim__how span{
  display: inline-block;
  margin-right: 7px;
  padding: 2px 7px;
  background: var(--ink);
  color: var(--white);
  font-size: 12px;
  letter-spacing: 0.08em;
}

/* ---------- 时间轴 ---------- */
.page-about .about-timeline__top{
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.page-about .about-years{
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 10px 0;
  border-block: var(--hair);
}
.page-about .about-years__link{
  padding: 5px 13px;
  border: var(--hair);
  color: var(--ink);
  text-decoration: none;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--step-1);
  font-variant-numeric: tabular-nums;
  transition: background 140ms var(--ease), color 140ms var(--ease);
}
.page-about .about-years__link:hover,
.page-about .about-years__link:focus-visible{
  background: var(--mango);
  border-color: var(--ink);
  color: var(--ink);
}
.page-about .about-tl{
  list-style: none;
  margin: 0;
  padding: 4px 0 0;
  border-left: 1px solid var(--ink);
}
.page-about .about-tl__item{
  position: relative;
  padding: 0 0 30px 24px;
}
.page-about .about-tl__item:last-child{
  padding-bottom: 2px;
}
.page-about .about-tl__item::before{
  content: "";
  position: absolute;
  left: -6px;
  top: 9px;
  width: 11px;
  height: 11px;
  background: var(--berry);
}
.page-about .about-tl__year{
  display: block;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--step-3);
  line-height: 1;
  color: var(--berry);
  font-variant-numeric: tabular-nums;
  margin-bottom: 7px;
}
.page-about .about-tl__item h3{
  margin: 0 0 6px;
  font-size: var(--step-2);
  font-weight: 900;
  line-height: 1.45;
}
.page-about .about-tl__item p{
  margin: 0;
  max-width: 40em;
  font-size: var(--step-1);
  line-height: 1.8;
  color: var(--pit);
}

/* ---------- 团队分工 ---------- */
.page-about .about-team{
  display: grid;
  gap: 24px;
}
.page-about .about-team__roles{
  display: flex;
  flex-direction: column;
  border-top: var(--line);
}
.page-about .about-role{
  display: grid;
  gap: 5px;
  padding: 14px 0;
  border-bottom: var(--hair);
}
.page-about .about-role__key{
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--step-2);
  font-variant-numeric: tabular-nums;
  color: var(--mango-deep);
}
.page-about .about-role p{
  margin: 0;
  font-size: var(--step-1);
  line-height: 1.75;
  color: var(--pit);
}
.page-about .about-rhythm{
  list-style: none;
  margin: 4px 0 0;
  padding: 18px 20px;
  background: var(--cream);
  border-left: 4px solid var(--mango);
  display: grid;
  gap: 10px;
  font-size: var(--step-1);
  line-height: 1.7;
}
.page-about .about-rhythm li{
  display: flex;
  gap: 12px;
}
.page-about .about-rhythm b{
  flex: 0 0 3.2em;
  font-weight: 900;
  color: var(--mango-deep);
}

/* ---------- 视觉语言：深色面板 ---------- */
.page-about .about-visual{
  background: var(--ink);
  border: var(--line);
  color: var(--white);
  padding: 30px 22px 34px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.page-about .about-visual .eyebrow{
  color: var(--mango);
}
.page-about .about-visual h2{
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(26px, 5.6vw, 42px);
  line-height: 1.18;
  letter-spacing: -0.02em;
}
.page-about .about-visual p{
  margin: 0;
  max-width: 42em;
  font-size: var(--step-1);
  line-height: 1.85;
  color: rgba(255, 255, 255, 0.82);
}
.page-about .about-swatches{
  list-style: none;
  margin: 8px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}
.page-about .about-swatch{
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 14px;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.86);
}
.page-about .about-swatch__chip{
  display: block;
  height: 52px;
  border: 1px solid rgba(255, 255, 255, 0.4);
}
.page-about .about-swatch__chip--mango{
  background: var(--mango);
}
.page-about .about-swatch__chip--berry{
  background: var(--berry);
}
.page-about .about-swatch__chip--lime{
  background: var(--lime);
}
.page-about .about-swatch__chip--paper{
  background: var(--paper);
}

/* ---------- 来源与合作 ---------- */
.page-about .about-source__grid{
  display: grid;
  gap: 22px;
}
.page-about .about-source__col{
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-top: 14px;
  border-top: 3px solid var(--mango);
}
.page-about .about-source__col:nth-child(2){
  border-top-color: var(--berry);
}
.page-about .about-source__col h3{
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--step-3);
  line-height: 1.3;
}
.page-about .about-source__col p{
  margin: 0;
  font-size: var(--step-1);
  line-height: 1.8;
  color: var(--pit);
}
.page-about .about-source__col a{
  color: var(--mango-deep);
  font-weight: 700;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}
.page-about .about-more{
  border: var(--line);
  background: var(--cream);
  padding: 0 18px;
}
.page-about .about-more summary{
  cursor: pointer;
  padding: 14px 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--step-2);
  line-height: 1.5;
}
.page-about .about-more[open] summary{
  border-bottom: var(--hair);
}
.page-about .about-more__body{
  padding: 14px 0 18px;
  font-size: var(--step-1);
  line-height: 1.85;
  color: var(--ink);
}
.page-about .about-more__body p{
  margin: 0 0 10px;
  max-width: 46em;
}
.page-about .about-more__body p:last-child{
  margin-bottom: 0;
}

/* ---------- 结尾行动区 ---------- */
.page-about .about-cta{
  background: var(--mango);
  border: var(--line);
  padding: 26px 22px 28px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.page-about .about-cta h2{
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(26px, 6vw, 40px);
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.page-about .about-cta p{
  margin: 8px 0 0;
  max-width: 34em;
  font-size: var(--step-1);
  line-height: 1.75;
  color: var(--ink);
}
.page-about .about-cta__actions{
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.page-about .about-cta .btn{
  background: var(--ink);
  color: var(--white);
  border: 1px solid var(--ink);
  font-weight: 700;
  text-decoration: none;
  padding: 11px 20px;
  transition: background 140ms var(--ease), color 140ms var(--ease);
}
.page-about .about-cta .btn--solid{
  background: var(--white);
  color: var(--ink);
  border-color: var(--ink);
}
.page-about .about-cta .btn:hover,
.page-about .about-cta .btn:focus-visible{
  background: var(--mango-deep);
  color: var(--white);
}

/* ---------- 桌面 ---------- */
@media (min-width: 600px){
  .page-about .about-toc ol{
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-about .about-rhythm{
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px 28px;
  }
  .page-about .about-role{
    grid-template-columns: 154px minmax(0, 1fr);
    gap: 6px 18px;
    align-items: baseline;
  }
  .page-about .about-swatches{
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 900px){
  .page-about .about-page{
    padding-block: 30px 116px;
    gap: 92px;
  }
  .page-about .about-hero{
    grid-template-columns: 176px minmax(0, 1.08fr) minmax(0, 0.92fr);
    gap: 42px;
    align-items: start;
    padding-bottom: 56px;
  }
  .page-about .about-hero__title{
    display: block;
    writing-mode: vertical-rl;
    max-height: 600px;
    margin-top: 4px;
  }
  .page-about .about-hero__title-main{
    display: block;
    font-size: 96px;
  }
  .page-about .about-hero__title-sub{
    display: block;
    font-size: var(--step-3);
    margin-block-start: 22px;
    letter-spacing: 0.06em;
  }
  .page-about .about-hero__lead{
    font-size: 21px;
    line-height: 1.72;
  }
  .page-about .about-claims{
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-about .about-claim{
    border-top: none;
    border-left: var(--line);
    padding: 26px 24px 30px;
  }
  .page-about .about-claim:first-child{
    border-left: none;
  }
  .page-about .about-claim:nth-child(2){
    background: var(--cream);
    padding-top: 52px;
  }
  .page-about .about-claim:nth-child(3){
    padding-top: 76px;
  }
  .page-about .about-timeline__top{
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.85fr);
    gap: 36px;
    align-items: end;
  }
  .page-about .about-team{
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    gap: 36px;
    align-items: start;
  }
  .page-about .about-visual{
    padding: 46px 44px 50px;
  }
  .page-about .about-source__grid{
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 32px;
  }
  .page-about .about-more{
    padding: 0 24px;
  }
  .page-about .about-cta{
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
    padding: 40px 44px;
  }
  .page-about .about-cta__actions{
    flex-shrink: 0;
  }
}

@media (prefers-reduced-motion: reduce){
  .page-about .about-toc a,
  .page-about .about-years__link,
  .page-about .about-cta .btn{
    transition: none;
  }
}
<<<END>>>