/* ===== 品牌价值页 · page-about ===== */
.page-about .breadcrumb{ margin: 1.25rem 0 0; }
.page-about .breadcrumb__list{
  display: flex;
  flex-wrap: wrap;
  gap: .35rem;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--mono);
  font-size: .72rem;
  letter-spacing: .08em;
  color: var(--mute);
}
.page-about .breadcrumb__item{ display: flex; align-items: center; }
.page-about .breadcrumb__item + .breadcrumb__item::before{
  content: "/";
  margin-right: .45rem;
  color: var(--scale);
}
.page-about .breadcrumb__link{
  color: var(--mute);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}
.page-about .breadcrumb__link:hover{ color: var(--cyan); border-bottom-color: var(--cyan); }

/* 首屏 */
.page-about .about-hero{
  padding: clamp(1.5rem, 4vw, 2.75rem) 0 clamp(2rem, 4.5vw, 3.5rem);
  border-bottom: var(--bw) solid var(--scale);
}
.page-about .about-hero h1{
  margin: .85rem 0 1.35rem;
  max-width: 20ch;
  font-size: clamp(2rem, 6.2vw, 4.35rem);
  line-height: 1.05;
  font-weight: 900;
  letter-spacing: -.02em;
  color: var(--white);
}
.page-about .about-hero__lead{
  max-width: var(--content);
  margin: 0;
  font-size: clamp(1rem, 1.5vw, 1.0625rem);
  line-height: 1.8;
  color: var(--white);
  opacity: .87;
}
.page-about .about-hero__facts{
  display: flex;
  flex-wrap: wrap;
  gap: clamp(.85rem, 2.4vw, 2.25rem);
  margin: clamp(1.5rem, 3vw, 2.5rem) 0 0;
  padding: 0;
  list-style: none;
}
.page-about .about-hero__facts li{
  display: flex;
  flex-direction: column;
  gap: .2rem;
  padding-left: .85rem;
  border-left: var(--bw) solid var(--scale);
}
.page-about .about-hero__facts li:first-child{ border-left-color: var(--green); }
.page-about .about-hero__fact-label{
  font-family: var(--mono);
  font-size: .7rem;
  letter-spacing: .08em;
  color: var(--mute);
}
.page-about .about-hero__band{
  height: 8px;
  width: min(460px, 68%);
  margin-top: clamp(1.5rem, 3vw, 2.25rem);
  background: var(--grad-jump);
  transform: skewX(-3.5deg);
  transform-origin: left center;
}

/* 主体布局：纵向索引 + 章节流 */
.page-about .about-layout{
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.5rem, 4vw, 3rem);
  padding-top: clamp(2rem, 4.5vw, 3.25rem);
}
@media (min-width: 1040px){
  .page-about .about-layout{
    grid-template-columns: 210px minmax(0, 1fr);
    gap: clamp(2rem, 4vw, 4rem);
  }
}
.page-about .about-index{ display: none; }
@media (min-width: 1040px){
  .page-about .about-index{
    display: block;
    position: sticky;
    top: 6.5rem;
    align-self: start;
  }
}
.page-about .about-index__title{
  margin: 0 0 .85rem;
  font-family: var(--mono);
  font-size: .7rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--mute);
}
.page-about .about-index__list{
  display: grid;
  gap: .1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-about .about-index__link{
  display: flex;
  gap: .6rem;
  align-items: baseline;
  padding: .45rem .55rem;
  font-size: .875rem;
  line-height: 1.45;
  color: var(--mute);
  text-decoration: none;
  border-left: var(--bw) solid transparent;
  transition: color .2s var(--ease), border-color .2s var(--ease), background-color .2s var(--ease);
}
.page-about .about-index__link:hover,
.page-about .about-index__link:focus-visible{
  color: var(--white);
  border-left-color: var(--cyan);
  background: rgba(0, 224, 208, .07);
}
.page-about .about-index__num{
  font-family: var(--mono);
  font-size: .72rem;
  letter-spacing: .06em;
  color: var(--cyan);
}

/* 章节 */
.page-about .ch{
  position: relative;
  padding: clamp(2.25rem, 5vw, 3.75rem) 0;
  border-top: 1px solid var(--scale);
}
.page-about .ch:first-child{
  padding-top: 0;
  border-top: none;
}
.page-about .ch__num{
  position: absolute;
  top: clamp(.85rem, 2vw, 1.5rem);
  right: 0;
  font-family: var(--mono);
  font-size: clamp(3.25rem, 11vw, 8.5rem);
  line-height: .85;
  font-weight: 800;
  letter-spacing: -.05em;
  color: rgba(0, 224, 208, .07);
  -webkit-text-stroke: 1px rgba(0, 224, 208, .32);
  pointer-events: none;
  user-select: none;
}
.page-about .ch:first-child .ch__num{ top: 0; }
.page-about .ch__eyebrow{
  margin: 0 0 .55rem;
  font-family: var(--mono);
  font-size: .7rem;
  letter-spacing: .14em;
  color: var(--cyan);
}
.page-about .ch__title{
  position: relative;
  z-index: 1;
  max-width: 22ch;
  margin: 0 0 1.25rem;
  font-size: clamp(1.5rem, 3.6vw, 2.35rem);
  line-height: 1.16;
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--white);
}
.page-about .ch__body{
  display: grid;
  gap: .9rem;
  max-width: var(--content);
}
.page-about .ch__body--tight{ margin-top: 1.25rem; }
.page-about .ch__body p{
  margin: 0;
  font-size: 1rem;
  line-height: 1.78;
  color: var(--white);
  opacity: .88;
}
.page-about .ch__body a{
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 224, 208, .4);
  transition: border-color .2s var(--ease);
}
.page-about .ch__body a:hover{ border-bottom-color: var(--cyan); }

.page-about .pull{
  max-width: var(--content);
  margin: 1.5rem 0 0;
  padding: 1rem 1.15rem;
  border: var(--bw) solid var(--scale);
  border-left: 4px solid var(--cyan);
  background: var(--panel);
  font-size: .975rem;
  line-height: 1.75;
  color: var(--white);
}

/* 场景卡片 */
.page-about .scene-list{
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--gap);
  margin: 1.75rem 0 0;
  padding: 0;
  list-style: none;
}
@media (min-width: 760px){
  .page-about .scene-list{ grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
.page-about .scene{
  position: relative;
  overflow: hidden;
  padding: 1.15rem 1.15rem 1.35rem;
  border: var(--bw) solid var(--scale);
  background: var(--panel);
}
.page-about .scene::before{
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--cyan);
  transform: scaleY(0);
  transform-origin: top center;
  transition: transform .26s var(--ease);
}
.page-about .scene:hover::before,
.page-about .scene:focus-within::before{ transform: scaleY(1); }
.page-about .scene__index{
  font-family: var(--mono);
  font-size: .7rem;
  letter-spacing: .12em;
  color: var(--cyan);
}
.page-about .scene__title{
  margin: .6rem 0 .6rem;
  font-size: 1.075rem;
  line-height: 1.35;
  font-weight: 700;
  color: var(--white);
}
.page-about .scene p{
  margin: 0;
  font-size: .9375rem;
  line-height: 1.72;
  color: var(--mute);
}

/* 生产流程 */
.page-about .flow{
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--gap);
  margin: 1.75rem 0 0;
  padding: 0;
  list-style: none;
}
@media (min-width: 820px){
  .page-about .flow{ grid-template-columns: repeat(4, minmax(0, 1fr)); }
}
.page-about .flow__step{
  padding-top: .9rem;
  border-top: var(--bw) solid var(--cyan);
}
.page-about .flow__step:nth-child(3){ border-top-color: var(--orange); }
.page-about .flow__step:nth-child(4){ border-top-color: var(--green); }
.page-about .flow__num{
  font-family: var(--mono);
  font-size: .72rem;
  letter-spacing: .12em;
  color: var(--green);
}
.page-about .flow__step:nth-child(3) .flow__num{ color: var(--orange); }
.page-about .flow__step:nth-child(4) .flow__num{ color: var(--cyan); }
.page-about .flow__title{
  margin: .5rem 0 .5rem;
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
}
.page-about .flow__step p:last-child{
  margin: 0;
  font-size: .9375rem;
  line-height: 1.72;
  color: var(--mute);
}
.page-about .flow__step p.flow__title{ color: var(--white); }

/* 数据来源 */
.page-about .source-grid{
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--gap);
  align-items: start;
  margin-top: 1.5rem;
}
@media (min-width: 900px){
  .page-about .source-grid{
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    gap: clamp(1.5rem, 3.5vw, 3rem);
  }
}
.page-about .source-list{
  display: grid;
  gap: .85rem;
  margin: 1.4rem 0 0;
  padding: 0;
  list-style: none;
}
.page-about .source-list li{
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: .75rem;
  padding-bottom: .85rem;
  border-bottom: 1px solid var(--scale);
}
.page-about .source-list li:last-child{ padding-bottom: 0; border-bottom: none; }
.page-about .source-list__k{
  padding-top: .3rem;
  font-family: var(--mono);
  font-size: .7rem;
  letter-spacing: .1em;
  color: var(--orange);
}
.page-about .source-list p{
  margin: 0;
  font-size: .95rem;
  line-height: 1.72;
  color: var(--white);
  opacity: .86;
}
.page-about .source-note{
  margin: 1.25rem 0 0;
  padding-left: .85rem;
  border-left: var(--bw) solid var(--green);
  font-size: .9rem;
  line-height: 1.7;
  color: var(--mute);
}

/* 图片容器（页面内补足约束） */
.page-about .figure{
  margin: 0;
  border: var(--bw) solid var(--scale);
  background: var(--panel);
}
.page-about .figure__media{
  display: block;
  overflow: hidden;
}
.page-about .figure__media img{
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}
.page-about .figure__caption{
  padding: .7rem .9rem;
  border-top: 1px solid var(--scale);
  font-family: var(--mono);
  font-size: .7rem;
  letter-spacing: .06em;
  line-height: 1.5;
  color: var(--mute);
}

/* 时间线 */
.page-about .timeline-banner{ margin-bottom: 1.75rem; }
.page-about .timeline{ margin-top: 1.75rem; }
.page-about .timeline__chart{
  display: block;
  width: 100%;
  height: clamp(90px, 14vw, 170px);
}
.page-about .timeline__nodes{
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--gap);
  margin: 1.35rem 0 0;
  padding: 0;
  list-style: none;
}
@media (min-width: 900px){
  .page-about .timeline__nodes{ grid-template-columns: repeat(5, minmax(0, 1fr)); }
  .page-about .timeline__node:nth-child(2){ transform: translateY(18px); }
  .page-about .timeline__node:nth-child(3){ transform: translateY(36px); }
  .page-about .timeline__node:nth-child(4){ transform: translateY(54px); }
  .page-about .timeline__node:nth-child(5){ transform: translateY(72px); }
}
.page-about .timeline__node{
  padding: .9rem .95rem 1.05rem;
  border: var(--bw) solid var(--scale);
  background: var(--panel);
  transition: border-color .25s var(--ease);
}
.page-about .timeline__node:hover,
.page-about .timeline__node:focus-within{ border-color: var(--cyan); }
.page-about .timeline__stage{
  display: flex;
  align-items: center;
  gap: .5rem;
  font-family: var(--mono);
  font-size: .7rem;
  letter-spacing: .1em;
  color: var(--green);
}
.page-about .timeline__dot{
  flex: none;
  width: 9px;
  height: 9px;
  background: var(--green);
  transform: rotate(45deg);
}
.page-about .timeline__title{
  margin: .6rem 0 .45rem;
  font-size: 1rem;
  line-height: 1.35;
  font-weight: 700;
  color: var(--white);
}
.page-about .timeline__desc{
  margin: 0;
  font-size: .875rem;
  line-height: 1.68;
  color: var(--mute);
  transition: color .25s var(--ease);
}
.page-about .timeline__node:hover .timeline__desc,
.page-about .timeline__node:focus-within .timeline__desc{ color: var(--white); }

/* 团队双地对照 */
.page-about .team-grid{
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--gap);
  align-items: start;
  margin-top: 1.5rem;
}
@media (min-width: 900px){
  .page-about .team-grid{
    grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
    gap: clamp(1.5rem, 3.5vw, 3rem);
  }
}
.page-about .city-grid{
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--gap);
  margin-top: 1.5rem;
}
@media (min-width: 640px){
  .page-about .city-grid{ grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
.page-about .city{
  padding: 1.1rem;
  border: var(--bw) solid var(--scale);
  background: var(--panel);
}
.page-about .city__name{
  margin: 0 0 .65rem;
  font-family: var(--mono);
  font-size: .9rem;
  letter-spacing: .08em;
  color: var(--cyan);
}
.page-about .city p{
  margin: 0 0 .65rem;
  font-size: .9375rem;
  line-height: 1.72;
  color: var(--white);
  opacity: .85;
}
.page-about .city p:last-child{ margin-bottom: 0; }

/* 合作生态 */
.page-about .eco-list{
  display: grid;
  gap: 0;
  margin: 1.5rem 0 0;
  padding: 0;
  list-style: none;
}
.page-about .eco-list li{
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: .4rem;
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--scale);
}
.page-about .eco-list li:first-child{ border-top: 1px solid var(--scale); }
@media (min-width: 760px){
  .page-about .eco-list li{
    grid-template-columns: 170px minmax(0, 1fr);
    gap: 1.5rem;
    align-items: start;
  }
}
.page-about .eco__k{
  font-family: var(--mono);
  font-size: .72rem;
  letter-spacing: .1em;
  color: var(--orange);
}
.page-about .eco-list p{
  max-width: var(--content);
  margin: 0;
  font-size: .95rem;
  line-height: 1.72;
  color: var(--white);
  opacity: .86;
}

/* 结尾行动区 */
.page-about .about-cta{
  display: grid;
  gap: 1rem;
  margin-top: clamp(2.25rem, 5vw, 3.75rem);
  padding: clamp(1.5rem, 4vw, 2.75rem);
  border: var(--bw) solid var(--scale);
  background: var(--panel);
}
.page-about .about-cta h2{
  margin: 0;
  font-size: clamp(1.35rem, 3vw, 1.9rem);
  line-height: 1.2;
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--white);
}
.page-about .about-cta p{
  max-width: var(--content);
  margin: 0;
  font-size: 1rem;
  line-height: 1.78;
  color: var(--white);
  opacity: .85;
}
.page-about .about-cta a:not(.cta){
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 224, 208, .4);
}
.page-about .about-cta a:not(.cta):hover{ border-bottom-color: var(--cyan); }
.page-about .about-cta__actions{
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  margin-top: .25rem;
}
<<<END>>>