.page-about {
  --about-pad: clamp(20px, 5vw, 64px);
  --about-gap: clamp(24px, 4vw, 48px);
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  overflow-x: hidden;
}

.page-about [id] {
  scroll-margin-top: calc(var(--topbar-h) + 28px);
}

.page-about .about-unit {
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 400;
  letter-spacing: 0;
  margin-left: 2px;
  color: var(--moss);
}

/* ---------- 面包屑 ---------- */
.page-about .about-crumbs {
  border-bottom: 1px solid var(--line);
  background: var(--paper);
}

.page-about .about-crumbs__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding-top: 14px;
  padding-bottom: 14px;
}

.page-about .about-crumbs__trail {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--moss);
}

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

.page-about .about-crumbs__trail a:hover,
.page-about .about-crumbs__trail a:focus-visible {
  color: var(--maple);
  border-bottom-color: var(--amber);
}

.page-about .about-crumbs__sep {
  color: var(--amber);
}

.page-about .about-crumbs__trail [aria-current="page"] {
  color: var(--ink);
  font-weight: 500;
}

.page-about .about-crumbs__meta {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--moss);
}

/* ---------- 首屏拼贴 ---------- */
.page-about .about-hero {
  padding: clamp(32px, 6vw, 80px) 0 clamp(24px, 4vw, 40px);
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--about-gap);
  align-items: end;
}

.page-about .about-hero__text {
  min-width: 0;
}

.page-about .about-hero__text .eyebrow {
  margin: 0 0 14px;
  color: var(--maple);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
}

.page-about .about-hero__text .display-title {
  margin: 0 0 18px;
  font-family: var(--font-serif);
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.15;
  color: var(--ink);
  text-wrap: balance;
}

.page-about .about-hero__text .lede {
  margin: 0;
  max-width: 34ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--moss);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-about .about-hero__actions .button {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.page-about .about-hero__visual {
  margin: 0;
  min-width: 0;
}

.page-about .about-hero__visual img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-micro);
}

.page-about .about-hero__caption {
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--moss);
  border-left: 2px solid var(--amber);
  padding-left: 10px;
}

/* ---------- 数据条 ---------- */
.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: clamp(28px, 5vw, 56px);
  background: var(--line);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-about .about-stats .stat {
  background: var(--paper);
  padding: 18px 16px;
  min-width: 0;
}

.page-about .about-stats .stat__value {
  display: block;
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 600;
  line-height: 1.15;
  color: var(--pine);
  font-variant-numeric: tabular-nums;
}

.page-about .about-stats .stat__label {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  color: var(--moss);
  letter-spacing: .02em;
}

/* ---------- 低多边形过渡 ---------- */
.page-about .about-divider {
  line-height: 0;
  margin: clamp(24px, 4vw, 56px) 0 0;
}

.page-about .about-divider svg {
  display: block;
  width: 100%;
  height: clamp(48px, 7vw, 96px);
}

.page-about .about-divider--flip {
  margin: 0;
}

/* ---------- 章节通用 ---------- */
.page-about .section {
  padding: clamp(40px, 7vw, 88px) 0;
}

.page-about .signplate {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .14em;
  color: var(--amber);
}

.page-about .signplate::after {
  content: "";
  display: block;
  width: 42px;
  height: 1px;
  background: var(--amber);
}

.page-about .signplate--light {
  color: var(--amber);
}

.page-about .about-section-head {
  margin-bottom: clamp(24px, 4vw, 44px);
  max-width: 62ch;
}

.page-about .about-section-head h2 {
  margin: 14px 0 12px;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(24px, 3.4vw, 34px);
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--ink);
  text-wrap: balance;
}

.page-about .about-section-head__note {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--moss);
}

/* ---------- 起点 ---------- */
.page-about .about-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
}

.page-about .about-split__aside {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.page-about .about-split__label {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 15px;
  color: var(--pine);
  letter-spacing: .08em;
}

.page-about .about-split__main {
  min-width: 0;
}

.page-about .about-split__main h2 {
  margin: 0 0 16px;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1.3;
  color: var(--ink);
  text-wrap: balance;
}

.page-about .about-split__main p {
  margin: 0 0 14px;
  max-width: 36ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--moss);
}

.page-about .origin-list {
  list-style: none;
  margin: 22px 0 0;
  padding: 20px 0 0;
  border-top: 1px solid var(--line);
  display: grid;
  gap: 12px;
}

.page-about .origin-list li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink);
}

.page-about .origin-list__dot {
  flex: 0 0 auto;
  width: 7px;
  height: 7px;
  margin-top: 8px;
  border-radius: 50%;
  background: var(--maple);
}

/* ---------- 时间线 ---------- */
.page-about .about-timeline {
  background: linear-gradient(180deg, var(--paper) 0%, var(--paper) 62%, rgba(220, 231, 224, .38) 100%);
}

.page-about .timeline-figure {
  margin: 0 0 clamp(24px, 4vw, 40px);
}

.page-about .timeline-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border: 1px solid var(--line);
  background: var(--mist);
}

.page-about .timeline-figure .image-frame__caption {
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--moss);
}

.page-about .timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  border-left: 2px solid var(--pine);
  margin-left: 5px;
}

.page-about .timeline__item {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  padding: 22px 0 22px 22px;
  transition: background .2s var(--ease);
}

.page-about .timeline__item::before {
  content: "";
  position: absolute;
  left: -7px;
  top: 28px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--maple);
  box-shadow: 0 0 0 3px var(--paper), 0 0 0 4px var(--line);
}

.page-about .timeline__item:target {
  background: var(--mist);
}

.page-about .timeline__item:target::before {
  box-shadow: 0 0 0 3px var(--mist), 0 0 0 4px var(--amber);
}

.page-about .timeline__marker {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.page-about .timeline__year {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -.02em;
  color: var(--pine);
  font-variant-numeric: tabular-nums;
}

.page-about .timeline__tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--maple-deep);
  background: var(--blush);
  padding: 2px 8px;
  border-radius: 999px;
}

.page-about .timeline__body h3 {
  margin: 0 0 8px;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 17px;
  line-height: 1.4;
  color: var(--ink);
}

.page-about .timeline__body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--moss);
  max-width: 52ch;
}

/* ---------- 团队 ---------- */
.page-about .team-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--about-gap);
}

.page-about .team-figure {
  margin: 0;
  min-width: 0;
}

.page-about .team-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-micro);
}

.page-about .team-figure__caption {
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--moss);
  border-left: 2px solid var(--amber);
  padding-left: 10px;
}

.page-about .team-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-about .team-card {
  min-width: 0;
  padding: 18px 16px 20px;
  background: var(--mist);
  border: 1px solid var(--line);
  transition: transform .2s var(--ease), border-color .2s var(--ease), box-shadow .2s var(--ease);
}

.page-about .team-card:hover,
.page-about .team-card:focus-within {
  transform: translateY(-2px);
  border-color: var(--moss);
  box-shadow: var(--shadow-micro);
}

.page-about .team-card__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
}

.page-about .team-card__head h3 {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 17px;
  color: var(--pine);
}

.page-about .team-card__num {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  color: var(--maple);
  font-variant-numeric: tabular-nums;
}

.page-about .team-card__bar {
  height: 6px;
  margin: 12px 0 12px;
  background: rgba(15, 77, 58, .12);
  overflow: hidden;
}

.page-about .team-card__bar span {
  display: block;
  height: 100%;
  background: var(--pine);
  transition: width .3s var(--ease);
}

.page-about .team-card:hover .team-card__bar span {
  background: var(--maple);
}

.page-about .ratio-39 { width: 39%; }
.page-about .ratio-32 { width: 32%; }
.page-about .ratio-18 { width: 18%; }
.page-about .ratio-11 { width: 11%; }

.page-about .team-card__role {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink);
}

.page-about .team-card__list {
  list-style: none;
  margin: 12px 0 0;
  padding: 12px 0 0;
  border-top: 1px solid rgba(15, 77, 58, .16);
  display: grid;
  gap: 6px;
}

.page-about .team-card__list li {
  position: relative;
  padding-left: 14px;
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--pine);
  opacity: .82;
  transition: opacity .2s var(--ease), transform .2s var(--ease);
}

.page-about .team-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 5px;
  height: 5px;
  background: var(--amber);
}

.page-about .team-card:hover .team-card__list li,
.page-about .team-card:focus-within .team-card__list li {
  opacity: 1;
  transform: translateX(2px);
}

/* ---------- 生产流程 ---------- */
.page-about .about-process {
  background: var(--paper);
}

.page-about .process {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-about .process-step {
  position: relative;
  min-width: 0;
  padding: 18px 16px 18px;
  border-top: 2px solid var(--pine);
  background: rgba(220, 231, 224, .42);
}

.page-about .process-step:nth-child(even) {
  border-top-color: var(--maple);
}

.page-about .process-step__no {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .12em;
  color: var(--amber);
  margin-bottom: 8px;
}

.page-about .process-step h3 {
  margin: 0 0 8px;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 16px;
  color: var(--ink);
}

.page-about .process-step p {
  margin: 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--moss);
}

.page-about .process-foot {
  margin: 22px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--moss);
  max-width: 60ch;
}

.page-about .process-foot a {
  color: var(--maple-deep);
  text-decoration: none;
  border-bottom: 1px solid var(--amber);
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-about .process-foot a:hover,
.page-about .process-foot a:focus-visible {
  color: var(--maple);
  border-bottom-color: var(--maple);
}

/* ---------- 合作生态 ---------- */
.page-about .about-partners {
  background: var(--pine);
  color: #fff;
  position: relative;
  overflow: hidden;
}

.page-about .about-partners::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(90deg, rgba(255, 255, 255, .05) 0 1px, transparent 1px 64px);
  pointer-events: none;
}

.page-about .about-partners__inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--about-gap);
}

.page-about .about-partners__lead h2 {
  margin: 14px 0 12px;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(22px, 3.2vw, 32px);
  line-height: 1.3;
  color: #fff;
  text-wrap: balance;
}

.page-about .about-partners__lead p {
  margin: 0;
  max-width: 40ch;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(247, 243, 234, .84);
}

.page-about .partners-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-about .partners-item {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  gap: 16px;
  padding: 16px 0;
  border-top: 1px solid rgba(201, 150, 43, .45);
}

.page-about .partners-item__year {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  color: var(--amber);
  font-variant-numeric: tabular-nums;
}

.page-about .partners-item h3 {
  margin: 0 0 6px;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 16px;
  color: #fff;
}

.page-about .partners-item p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: rgba(247, 243, 234, .78);
}

/* ---------- 使用规模 ---------- */
.page-about .about-scale {
  background: var(--paper);
}

.page-about .scale-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .scale-card {
  min-width: 0;
  padding: 22px 18px;
  background: var(--paper);
}

.page-about .scale-card__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 30px;
  font-weight: 600;
  line-height: 1.1;
  color: var(--maple);
  font-variant-numeric: tabular-nums;
  border-bottom: 2px solid var(--amber);
  padding-bottom: 8px;
  margin-bottom: 12px;
}

.page-about .scale-card h3 {
  margin: 0 0 8px;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 16px;
  color: var(--ink);
}

.page-about .scale-card p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--moss);
}

/* ---------- 接下来 ---------- */
.page-about .about-next {
  background: linear-gradient(180deg, rgba(220, 231, 224, .55) 0%, var(--paper) 100%);
}

.page-about .about-next__head {
  max-width: 56ch;
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-about .about-next__head h2 {
  margin: 14px 0 12px;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(22px, 3.2vw, 30px);
  line-height: 1.3;
  color: var(--ink);
  text-wrap: balance;
}

.page-about .about-next__head p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--moss);
}

.page-about .next-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.page-about .next-item {
  min-width: 0;
  padding-left: 16px;
  border-left: 2px solid var(--pine);
}

.page-about .next-item:nth-child(2) {
  border-left-color: var(--maple);
}

.page-about .next-item:nth-child(3) {
  border-left-color: var(--amber);
}

.page-about .next-item h3 {
  margin: 0 0 6px;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 16px;
  color: var(--ink);
}

.page-about .next-item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--moss);
}

.page-about .about-next__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-about .about-next__actions .button {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

/* ---------- 章节索引 ---------- */
.page-about .chapter-index {
  display: none;
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

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

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

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

  .page-about .about-hero__visual {
    margin-bottom: 6px;
  }

  .page-about .about-split {
    grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
    gap: var(--about-gap);
  }

  .page-about .about-split__aside {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    border-right: 1px solid var(--line);
    padding-right: 20px;
  }

  .page-about .about-split__main p {
    max-width: 58ch;
  }

  .page-about .timeline__item {
    grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
    gap: var(--about-gap);
    padding: 26px 0 26px 34px;
  }

  .page-about .timeline__item::before {
    top: 34px;
  }

  .page-about .timeline__marker {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }

  .page-about .team-layout {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    align-items: start;
  }

  .page-about .about-partners__inner {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  }
}

@media (min-width: 1080px) {
  .page-about .team-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .process {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 12px;
  }

  .page-about .process-step:not(:last-child)::after {
    content: "";
    position: absolute;
    right: -9px;
    top: 34px;
    width: 7px;
    height: 7px;
    border-top: 1px solid var(--amber);
    border-right: 1px solid var(--amber);
    transform: rotate(45deg);
  }

  .page-about .scale-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 1440px) {
  .page-about .chapter-index {
    display: block;
    position: fixed;
    right: 18px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 6;
    padding: 14px 12px;
    background: rgba(247, 243, 234, .94);
    border: 1px solid var(--line);
    box-shadow: var(--shadow-micro);
  }

  .page-about .chapter-index__title {
    display: block;
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: .16em;
    color: var(--amber);
    margin-bottom: 8px;
    text-transform: uppercase;
  }

  .page-about .chapter-index__list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 6px;
  }

  .page-about .chapter-index__list a {
    display: block;
    font-size: 11.5px;
    line-height: 1.4;
    color: var(--moss);
    text-decoration: none;
    border-left: 2px solid transparent;
    padding-left: 8px;
    transition: color .16s var(--ease), border-color .16s var(--ease);
  }

  .page-about .chapter-index__list a:hover,
  .page-about .chapter-index__list a:focus-visible {
    color: var(--maple);
    border-left-color: var(--maple);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .team-card,
  .page-about .team-card__bar span,
  .page-about .team-card__list li,
  .page-about .about-crumbs__trail a,
  .page-about .process-foot a,
  .page-about .chapter-index__list a {
    transition: none;
  }

  .page-about .team-card:hover,
  .page-about .team-card:focus-within {
    transform: none;
  }

  .page-about .team-card:hover .team-card__list li,
  .page-about .team-card:focus-within .team-card__list li {
    transform: none;
  }
}
<<<END>>>