.page-about{
  --about-space: clamp(52px, 8vw, 104px);
  --about-line: 3px solid var(--line-strong);
  display: block;
  color: var(--fog);
  padding-bottom: clamp(40px, 6vw, 88px);
}

.page-about .about-top{
  padding: clamp(20px, 4vw, 40px) 0 clamp(6px, 1.4vw, 12px);
}

.page-about .breadcrumb{
  margin: 0;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: .08em;
}

.page-about .breadcrumb a{
  color: var(--silver);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-about .breadcrumb a:hover,
.page-about .breadcrumb a:focus-visible{
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-about .breadcrumb__sep{
  color: var(--steel);
  margin: 0 .5em;
}

.page-about .breadcrumb__current{
  color: var(--fog);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero{
  padding: clamp(6px, 1.5vw, 14px) 0 clamp(34px, 5vw, 60px);
  border-bottom: var(--about-line);
}

.page-about .about-hero__kicker{
  margin: 0 0 clamp(14px, 2vw, 20px);
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: .26em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-about .about-hero__title{
  margin: 0 0 clamp(22px, 3.4vw, 38px);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(30px, 7vw, 64px);
  line-height: 1.14;
  letter-spacing: -.01em;
  color: var(--fog);
  max-width: 20ch;
}

.page-about .about-hero__grid{
  display: grid;
  gap: clamp(24px, 3.5vw, 40px);
}

.page-about .about-hero__lead{
  margin: 0;
  max-width: 58ch;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.9;
  color: var(--silver);
}

.page-about .hero-stats{
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 clamp(14px, 2vw, 24px);
  border-top: 1px solid var(--line-strong);
}

.page-about .hero-stats__item{
  padding: clamp(12px, 1.8vw, 18px) 0 clamp(10px, 1.4vw, 14px);
  border-bottom: 1px solid var(--line);
}

.page-about .hero-stats__num{
  display: block;
  font-family: var(--font-data);
  font-size: clamp(26px, 4.4vw, 36px);
  line-height: 1.05;
  color: var(--cyan);
  letter-spacing: -.02em;
}

.page-about .hero-stats__label{
  display: block;
  margin-top: 6px;
  font-size: 12px;
  line-height: 1.5;
  color: var(--silver);
}

/* ---------- 章节通用 ---------- */
.page-about .about-section{
  padding-top: var(--about-space);
}

.page-about .about-head{
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(10px, 1.6vw, 16px);
  border-top: var(--about-line);
  padding-top: clamp(16px, 2.4vw, 26px);
  margin-bottom: clamp(24px, 3.6vw, 44px);
}

.page-about .about-head__num{
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(40px, 8vw, 72px);
  line-height: .82;
  letter-spacing: .04em;
  color: var(--steel);
}

@supports (-webkit-text-stroke: 1px #000){
  .page-about .about-head__num{
    color: transparent;
    -webkit-text-stroke: 2px var(--silver);
  }
}

.page-about .about-head__tag{
  display: inline-block;
  font-family: var(--font-cond);
  font-size: 12px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 8px;
}

.page-about .about-head__title{
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(22px, 3.6vw, 34px);
  line-height: 1.32;
  color: var(--fog);
  max-width: 26ch;
}

.page-about .about-text p{
  margin: 0 0 clamp(14px, 2vw, 20px);
  font-size: clamp(14px, 1.6vw, 16px);
  line-height: 1.95;
  color: var(--silver);
}

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

.page-about .about-text--lead{
  margin: 0 0 clamp(22px, 3vw, 34px);
  max-width: 62ch;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.9;
  color: var(--fog);
}

.page-about .about-cols{
  display: grid;
  gap: clamp(22px, 3.4vw, 40px);
}

/* ---------- 图片 ---------- */
.page-about .figure{
  margin: 0;
}

.page-about .figure__media{
  border: 2px solid var(--line-strong);
  background: var(--steel);
  box-shadow: var(--shadow-hard);
  overflow: hidden;
}

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

.page-about .figure__caption{
  margin-top: 12px;
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--silver);
}

/* ---------- 暖纸摘要板 ---------- */
.page-about .about-board{
  margin-top: clamp(24px, 3.4vw, 40px);
  background: var(--paper);
  color: var(--ink-on-paper);
  border: 2px solid var(--paper);
  box-shadow: var(--shadow-hard);
  padding: clamp(18px, 2.8vw, 30px);
}

.page-about .about-board--tight{
  margin-top: clamp(20px, 2.6vw, 30px);
}

.page-about .about-board .board__head{
  border-bottom: 2px solid rgba(20, 32, 43, .22);
  padding-bottom: 12px;
  margin-bottom: clamp(8px, 1.4vw, 12px);
}

.page-about .about-board .board__title{
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(17px, 2.2vw, 22px);
  color: var(--ink-on-paper);
}

.page-about .about-board .board__row{
  display: grid;
  gap: 4px;
  padding: clamp(12px, 1.6vw, 16px) 0;
  border-bottom: 1px solid rgba(20, 32, 43, .16);
}

.page-about .about-board .board__row:last-child{
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .about-board .board__term{
  font-family: var(--font-cond);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: .06em;
  color: var(--ink-on-paper);
}

.page-about .about-board .board__def{
  font-size: 14px;
  line-height: 1.8;
  color: rgba(20, 32, 43, .82);
}

.page-about .inline-link{
  color: #0F6E5C;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-about .inline-link:hover,
.page-about .inline-link:focus-visible{
  color: var(--vermilion);
}

/* ---------- 内容体系列表 ---------- */
.page-about .line-list{
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line-strong);
}

.page-about .line-list__item{
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 6px clamp(12px, 2vw, 22px);
  padding: clamp(16px, 2.4vw, 26px) 0;
  border-bottom: 1px solid var(--line);
  transition: background .25s var(--ease), padding-left .25s var(--ease);
}

.page-about .line-list__item:hover{
  background: rgba(53, 230, 196, .05);
  padding-left: clamp(8px, 1.4vw, 16px);
}

.page-about .line-list__num{
  font-family: var(--font-data);
  font-size: 13px;
  line-height: 1.6;
  color: var(--cyan);
  letter-spacing: .06em;
}

.page-about .line-list__title{
  margin: 0 0 8px;
  font-family: var(--font-cond);
  font-weight: 700;
  font-size: clamp(16px, 2vw, 19px);
  letter-spacing: .04em;
  color: var(--fog);
}

.page-about .line-list__text{
  margin: 0;
  font-size: 14px;
  line-height: 1.9;
  color: var(--silver);
  max-width: 62ch;
}

.page-about .about-actions{
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 34px);
}

/* ---------- 编辑流程 ---------- */
.page-about .process-panel{
  background: var(--steel);
  border: 2px solid var(--line-strong);
  box-shadow: var(--shadow-hard);
  padding: clamp(18px, 3vw, 36px);
}

.page-about .process-panel__grid{
  display: grid;
  gap: clamp(22px, 3.4vw, 40px);
}

.page-about .team-split{
  list-style: none;
  margin: clamp(16px, 2.4vw, 24px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  border-top: 1px solid var(--line-strong);
}

.page-about .team-split__item{
  padding: 14px 0 0;
  border-top: 2px solid transparent;
}

.page-about .team-split__num{
  display: block;
  font-family: var(--font-data);
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1.1;
  color: var(--orange);
}

.page-about .team-split__label{
  display: block;
  margin-top: 4px;
  font-size: 12px;
  color: var(--silver);
}

.page-about .step-list{
  list-style: none;
  margin: clamp(24px, 3.4vw, 38px) 0 0;
  padding: 0;
  display: grid;
  gap: clamp(14px, 2vw, 20px);
}

.page-about .step-list__item{
  display: grid;
  gap: 6px;
  padding-top: 14px;
  border-top: 1px solid var(--line-strong);
}

.page-about .step-list__key{
  font-family: var(--font-cond);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: .1em;
  color: var(--cyan);
}

.page-about .step-list__text{
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--silver);
}

/* ---------- 时间线 ---------- */
.page-about .roadmap-figure{
  margin-bottom: clamp(28px, 4vw, 46px);
}

.page-about .timeline{
  --tl-pad-x: clamp(18px, 3vw, 30px);
  --tl-pad-y: clamp(24px, 3.4vw, 38px);
  list-style: none;
  margin: 0;
  padding: 0 0 0 var(--tl-pad-x);
  border-left: 3px solid var(--line-strong);
  display: grid;
  gap: clamp(18px, 2.6vw, 28px);
}

.page-about .timeline__item{
  position: relative;
  padding-bottom: clamp(6px, 1.4vw, 12px);
}

.page-about .timeline__item::before{
  content: "";
  position: absolute;
  left: calc(-1 * var(--tl-pad-x) - 8.5px);
  top: 4px;
  width: 14px;
  height: 14px;
  box-sizing: border-box;
  border: 3px solid var(--cyan);
  background: var(--ink-navy);
}

.page-about .timeline__item:hover::before,
.page-about .timeline__item:focus-visible::before{
  border-color: var(--orange);
}

.page-about .timeline__item:focus-visible{
  outline: 2px solid var(--cyan);
  outline-offset: 8px;
}

.page-about .timeline__year{
  display: block;
  font-family: var(--font-data);
  font-size: clamp(20px, 3vw, 26px);
  line-height: 1.1;
  color: var(--paper);
  letter-spacing: .04em;
}

.page-about .timeline__title{
  margin: 8px 0 6px;
  font-family: var(--font-cond);
  font-weight: 700;
  font-size: 16px;
  letter-spacing: .05em;
  color: var(--fog);
}

.page-about .timeline__text{
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--silver);
}

/* ---------- 场景 ---------- */
.page-about .scene-grid{
  display: grid;
  gap: clamp(14px, 2vw, 22px);
}

.page-about .scene{
  border: 2px solid var(--line-strong);
  background: var(--ink-charcoal);
  padding: clamp(16px, 2.4vw, 26px);
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), border-color .25s var(--ease);
}

.page-about .scene:hover{
  transform: translate(-3px, -3px);
  box-shadow: var(--shadow-hard);
  border-color: var(--cyan);
}

.page-about .scene .tag{
  display: inline-block;
  margin-bottom: 12px;
}

.page-about .scene__title{
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(17px, 2.2vw, 21px);
  line-height: 1.4;
  color: var(--fog);
}

.page-about .scene__text{
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--silver);
}

/* ---------- 奖项与合作 ---------- */
.page-about .award-panel{
  border: 2px solid var(--line-strong);
  background: var(--ink-charcoal);
  padding: clamp(18px, 2.8vw, 32px);
}

.page-about .award-panel__lead{
  margin: 0 0 clamp(18px, 2.4vw, 26px);
  max-width: 64ch;
  font-size: clamp(14px, 1.6vw, 16px);
  line-height: 1.9;
  color: var(--silver);
}

.page-about .award-list{
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(12px, 1.8vw, 18px);
}

.page-about .award{
  display: flex;
  align-items: center;
  gap: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.page-about .award__mark{
  width: 34px;
  height: 34px;
  flex: 0 0 auto;
  color: var(--gold);
}

.page-about .award__text{
  font-family: var(--font-cond);
  font-size: 14px;
  letter-spacing: .06em;
  color: var(--fog);
}

.page-about .coop-title{
  margin: clamp(28px, 4vw, 44px) 0 clamp(16px, 2.2vw, 22px);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(18px, 2.4vw, 24px);
  color: var(--fog);
}

.page-about .coop-grid{
  display: grid;
  gap: clamp(14px, 2vw, 22px);
}

.page-about .coop{
  position: relative;
  border: 2px solid var(--line-strong);
  padding: clamp(18px, 2.6vw, 28px);
  background: linear-gradient(160deg, rgba(28, 43, 58, .92), rgba(17, 24, 32, .92));
  transition: transform .25s var(--ease), box-shadow .25s var(--ease);
}

.page-about .coop:hover{
  transform: translate(-3px, -3px);
  box-shadow: var(--shadow-hard);
}

.page-about .coop__num{
  display: block;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--vermilion);
  margin-bottom: 10px;
}

.page-about .coop__title{
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(17px, 2.1vw, 20px);
  color: var(--fog);
}

.page-about .coop__text{
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--silver);
}

/* ---------- 收束 ---------- */
.page-about .closing{
  margin-top: clamp(28px, 4vw, 48px);
  display: grid;
  gap: clamp(18px, 2.6vw, 28px);
  align-items: center;
  border: 2px solid var(--paper);
  background: var(--paper);
  color: var(--ink-on-paper);
  box-shadow: var(--shadow-lift);
  padding: clamp(20px, 3vw, 36px);
}

.page-about .closing__title{
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(20px, 2.8vw, 28px);
  color: var(--ink-on-paper);
}

.page-about .closing__desc{
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(20, 32, 43, .82);
  max-width: 52ch;
}

.page-about .closing__actions{
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 媒体查询 ---------- */
@media (min-width: 640px){
  .page-about .scene-grid,
  .page-about .coop-grid{
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .award-list{
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0 clamp(14px, 2vw, 22px);
  }

  .page-about .award{
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
}

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

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

  .page-about .about-head{
    grid-template-columns: auto minmax(0, 1fr);
    column-gap: clamp(24px, 4vw, 56px);
    align-items: start;
  }

  .page-about .about-head__num{
    font-size: clamp(62px, 6vw, 92px);
  }

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

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

  .page-about .step-list{
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: clamp(14px, 2vw, 24px);
  }

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

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

  .page-about .timeline{
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: clamp(16px, 2vw, 28px);
    padding: var(--tl-pad-y) 0 0;
    border-left: 0;
    border-top: 3px solid var(--line-strong);
  }

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

  .page-about .timeline__item::before{
    left: 0;
    top: calc(-1 * var(--tl-pad-y) - 8.5px);
  }

  .page-about .closing{
    grid-template-columns: minmax(0, 1fr) auto;
  }
}

@media (min-width: 1100px){
  .page-about .about-board .board__row{
    grid-template-columns: minmax(120px, 180px) minmax(0, 1fr);
    align-items: baseline;
    gap: clamp(12px, 2vw, 28px);
  }

  .page-about .line-list__item{
    grid-template-columns: auto minmax(0, 1fr);
  }
}

@media (prefers-reduced-motion: reduce){
  .page-about .scene,
  .page-about .coop,
  .page-about .line-list__item{
    transition: none;
  }

  .page-about .scene:hover,
  .page-about .coop:hover{
    transform: none;
  }
}
<<<END>>>