.page-about {
  --about-hair: rgba(36, 68, 90, 0.62);
  --about-hair-strong: rgba(138, 169, 188, 0.34);
  background: var(--ink);
  color: var(--paper);
}

.page-about .wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

/* ---------- 面包屑 ---------- */
.page-about .crumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
}

.page-about .crumbs li {
  color: var(--paper-dim);
}

.page-about .crumbs li + li::before {
  content: "/";
  margin: 0 10px;
  color: var(--grid);
}

.page-about .crumbs a {
  color: var(--terminal);
  text-decoration: none;
}

.page-about .crumbs a:hover,
.page-about .crumbs a:focus-visible {
  color: var(--cinnabar-lit);
}

.page-about .crumbs [aria-current="page"] {
  color: var(--paper);
}

/* ---------- 通用排版 ---------- */
.page-about h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 3.6vw, 40px);
  line-height: 1.22;
  letter-spacing: 0.05em;
  margin: 12px 0 0;
}

.page-about h3 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(17px, 2vw, 21px);
  letter-spacing: 0.04em;
  line-height: 1.4;
  margin: 0 0 10px;
}

.page-about .section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 12px 40px;
  margin-bottom: clamp(24px, 3.4vw, 44px);
}

.page-about .section__head p {
  max-width: 46ch;
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--terminal);
}

.page-about .prose p {
  margin: 0 0 1.1em;
  line-height: 1.85;
  color: var(--paper);
}

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

.page-about [data-reveal] {
  transition: opacity 0.45s ease, transform 0.45s ease;
}

.page-about [data-reveal].is-in {
  opacity: 1;
}

.page-about .tl__item:nth-child(2n).is-in {
  transition-delay: 0.06s;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(22px, 4vw, 40px) 0 clamp(44px, 6vw, 88px);
  border-bottom: 1px solid var(--about-hair);
  background:
    linear-gradient(to right, rgba(36, 68, 90, 0.42) 1px, transparent 1px) 0 0 / 48px 48px,
    linear-gradient(to bottom, rgba(36, 68, 90, 0.42) 1px, transparent 1px) 0 0 / 48px 48px,
    radial-gradient(90% 70% at 88% 6%, rgba(74, 216, 196, 0.13), transparent 64%),
    var(--ink);
}

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(28px, 4vw, 56px);
  margin-top: clamp(22px, 3.6vw, 44px);
}

.page-about .about-hero h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 6.2vw, 64px);
  line-height: 1.1;
  letter-spacing: 0.05em;
  margin: 16px 0 0;
}

.page-about .about-hero .lede {
  margin: clamp(18px, 2.6vw, 26px) 0 0;
  max-width: 34em;
  font-size: clamp(15px, 1.7vw, 18px);
  line-height: 1.85;
  color: var(--paper-dim);
}

.page-about .about-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 32px;
  list-style: none;
  margin: clamp(24px, 3.2vw, 38px) 0 0;
  padding: 20px 0 0;
  border-top: 1px solid var(--about-hair);
}

.page-about .about-facts li {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.page-about .about-facts b {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(20px, 3vw, 28px);
  color: var(--cinnabar-lit);
  letter-spacing: 0.02em;
}

.page-about .about-facts span {
  font-size: 13px;
  color: var(--terminal);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(24px, 3vw, 36px);
}

.page-about .about-hero__fig {
  margin: 0;
  border: 1px solid var(--about-hair-strong);
  box-shadow: 12px 12px 0 rgba(217, 93, 57, 0.16);
}

.page-about .about-hero__fig .media__caption {
  padding: 10px 12px;
  font-size: 12px;
  color: var(--terminal);
  border-top: 1px solid var(--about-hair-strong);
}

.page-about .about-hero__fig .media__caption .mono {
  color: var(--jade);
  margin-right: 8px;
}

/* ---------- 起点与主张 ---------- */
.page-about .about-start {
  padding: clamp(44px, 6vw, 88px) 0;
}

.page-about .about-split {
  display: grid;
  gap: clamp(22px, 3.4vw, 56px);
}

.page-about .about-split__aside h2 {
  max-width: 13em;
}

.page-about .about-pull {
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 18px 0 18px 20px;
  border-left: 3px solid var(--cinnabar);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(16px, 1.9vw, 20px);
  line-height: 1.7;
  letter-spacing: 0.03em;
  color: var(--paper);
}

/* ---------- 时间轴 ---------- */
.page-about .about-timeline {
  padding: clamp(44px, 6vw, 88px) 0;
  border-top: 1px solid var(--about-hair);
}

.page-about .tl-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: clamp(26px, 3.4vw, 40px);
}

.page-about .tl-jump a {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  padding: 6px 12px;
  border: 1px solid var(--about-hair-strong);
  color: var(--paper-dim);
  text-decoration: none;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-about .tl-jump a:hover,
.page-about .tl-jump a:focus-visible {
  color: var(--cinnabar-lit);
  border-color: var(--cinnabar);
}

.page-about .tl {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}

.page-about .tl::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 6px;
  bottom: 0;
  width: 1px;
  background: linear-gradient(to bottom, var(--jade), var(--grid) 55%, transparent);
}

.page-about .tl__item {
  position: relative;
  padding: 0 0 clamp(28px, 4vw, 42px) 32px;
  scroll-margin-top: 96px;
}

.page-about .tl__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  width: 11px;
  height: 11px;
  border: 1px solid var(--jade);
  background: var(--ink);
}

.page-about .tl__item:last-child {
  padding-bottom: 0;
}

.page-about .tl__year {
  display: block;
  font-size: clamp(26px, 4.4vw, 40px);
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--cinnabar-lit);
  line-height: 1;
  margin-bottom: 10px;
}

.page-about .tl__body p {
  margin: 0;
  max-width: 56ch;
  line-height: 1.8;
  color: var(--paper-dim);
}

.page-about .tl__tag {
  display: inline-block;
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  padding: 4px 10px;
  border: 1px dashed var(--about-hair-strong);
  color: var(--jade);
}

@media (hover: hover) {
  .page-about .tl__tag {
    opacity: 0.45;
    transition: opacity 0.25s ease, border-color 0.25s ease;
  }

  .page-about .tl__item:hover .tl__tag,
  .page-about .tl__item:focus-within .tl__tag {
    opacity: 1;
    border-color: var(--jade);
  }
}

/* ---------- 资料留存 ---------- */
.page-about .about-records {
  position: relative;
  padding: clamp(44px, 6vw, 88px) 0;
  background: var(--sheet);
  color: var(--sheet-ink);
  border-top: 3px solid var(--cinnabar);
}

.page-about .about-records .eyebrow {
  color: var(--sheet-ink);
}

.page-about .about-records .lede {
  margin: 16px 0 0;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--sheet-ink);
}

.page-about .rec-grid {
  display: grid;
  gap: clamp(28px, 4vw, 56px);
}

.page-about .rec-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
  list-style: none;
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding: 18px 0;
  border-top: 1px solid rgba(21, 36, 49, 0.22);
  border-bottom: 1px solid rgba(21, 36, 49, 0.22);
}

.page-about .rec-stats li {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.page-about .rec-stats b {
  font-size: clamp(22px, 3vw, 30px);
  color: var(--cinnabar);
  font-weight: 700;
}

.page-about .rec-stats span {
  font-size: 13px;
  color: rgba(21, 36, 49, 0.72);
}

.page-about .rec-list {
  list-style: none;
  margin: clamp(22px, 3vw, 34px) 0 0;
  padding: 0;
}

.page-about .rec-list li {
  padding: 20px 0;
  border-top: 1px solid rgba(21, 36, 49, 0.16);
}

.page-about .rec-list li:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-about .rec-list__k {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--cinnabar);
}

.page-about .rec-list p:last-child {
  margin: 0;
  line-height: 1.8;
  color: rgba(21, 36, 49, 0.86);
}

.page-about .rec-media {
  margin: 0;
  align-self: start;
  border: 1px solid rgba(21, 36, 49, 0.24);
  background: #fff;
}

.page-about .rec-media .media__caption {
  padding: 10px 12px;
  font-size: 12px;
  color: rgba(21, 36, 49, 0.66);
  border-top: 1px solid rgba(21, 36, 49, 0.16);
}

/* ---------- 团队与覆盖 ---------- */
.page-about .about-team {
  padding: clamp(44px, 6vw, 88px) 0;
}

.page-about .team-grid {
  display: grid;
  gap: clamp(26px, 3.6vw, 52px);
}

.page-about .team-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .team-row {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr) 34px;
  gap: 12px;
  align-items: center;
  padding: 11px 0;
  border-bottom: 1px solid var(--about-hair);
}

.page-about .team-row:first-child {
  border-top: 1px solid var(--about-hair);
}

.page-about .team-row__name {
  font-size: 13px;
  color: var(--paper-dim);
}

.page-about .team-row__bar {
  display: block;
  height: 6px;
  background: rgba(36, 68, 90, 0.7);
}

.page-about .team-row__bar i {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--jade), rgba(74, 216, 196, 0.28));
}

.page-about .team-row__num {
  font-size: 15px;
  text-align: right;
  color: var(--paper);
}

.page-about .team-note {
  margin: 18px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--terminal);
}

.page-about .team-copy--right p {
  margin: 0 0 1em;
  line-height: 1.85;
  color: var(--paper-dim);
}

.page-about .zone {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 6px;
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
}

.page-about .zone li {
  aspect-ratio: 1 / 1;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--about-hair-strong);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--terminal);
}

.page-about .zone li:nth-child(3n) {
  border-color: rgba(74, 216, 196, 0.5);
  color: var(--jade);
}

.page-about .team-figure {
  margin: clamp(30px, 4vw, 48px) 0 0;
  border: 1px solid var(--about-hair-strong);
}

.page-about .team-figure .media__caption {
  padding: 10px 12px;
  font-size: 12px;
  color: var(--terminal);
  border-top: 1px solid var(--about-hair-strong);
}

/* ---------- 合作生态 ---------- */
.page-about .about-eco {
  padding: clamp(44px, 6vw, 88px) 0;
  background: var(--ink-deep);
  border-top: 1px solid var(--about-hair);
}

.page-about .eco-grid {
  display: grid;
  gap: clamp(24px, 3vw, 34px);
}

.page-about .eco-card {
  padding-top: 18px;
  border-top: 2px solid var(--cinnabar);
}

.page-about .eco-card:nth-child(2) {
  border-top-color: var(--jade);
}

.page-about .eco-card:nth-child(3) {
  border-top-color: var(--paper-dim);
}

.page-about .eco-card__k {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--terminal);
}

.page-about .eco-card p:last-child {
  margin: 0;
  line-height: 1.8;
  color: var(--paper-dim);
}

.page-about .eco-strip {
  display: grid;
  gap: 18px;
  list-style: none;
  margin: clamp(30px, 4vw, 48px) 0 0;
  padding: clamp(20px, 3vw, 28px) 0 0;
  border-top: 1px solid var(--about-hair);
}

.page-about .eco-strip li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 12px;
}

.page-about .eco-strip b {
  font-size: clamp(24px, 3.4vw, 34px);
  font-weight: 700;
  color: var(--cinnabar-lit);
  line-height: 1;
}

.page-about .eco-strip span {
  font-size: 13px;
  line-height: 1.7;
  color: var(--terminal);
}

/* ---------- 结尾入口 ---------- */
.page-about .about-next {
  padding: clamp(44px, 6vw, 88px) 0;
  border-top: 1px solid var(--about-hair);
  background: linear-gradient(180deg, var(--ink), var(--ink-deep));
}

.page-about .next-grid {
  display: grid;
  gap: clamp(26px, 3.6vw, 52px);
}

.page-about .next-copy p {
  margin: 16px 0 0;
  max-width: 44ch;
  line-height: 1.85;
  color: var(--paper-dim);
}

.page-about .next-links {
  display: grid;
  gap: 1px;
  background: var(--about-hair);
  border: 1px solid var(--about-hair);
  align-content: start;
}

.page-about .next-link {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr) 22px;
  align-items: center;
  gap: 12px;
  padding: 16px 14px;
  background: var(--ink-deep);
  color: var(--paper);
  text-decoration: none;
  transition: background 0.22s ease, color 0.22s ease;
}

.page-about .next-link__no {
  font-size: 12px;
  color: var(--terminal);
}

.page-about .next-link__text {
  font-size: 14px;
  line-height: 1.6;
}

.page-about .next-link__arrow {
  font-size: 15px;
  color: var(--cinnabar-lit);
  transition: transform 0.22s ease;
}

.page-about .next-link:hover,
.page-about .next-link:focus-visible {
  background: var(--ink);
  color: var(--cinnabar-lit);
}

.page-about .next-link:hover .next-link__arrow,
.page-about .next-link:focus-visible .next-link__arrow {
  transform: translateX(4px);
}

/* ---------- 断点 ---------- */
@media (min-width: 720px) {
  .page-about .tl__item {
    display: grid;
    grid-template-columns: 132px minmax(0, 1fr);
    gap: clamp(16px, 2.6vw, 34px);
    align-items: start;
    padding-left: 34px;
  }

  .page-about .tl__year {
    margin-bottom: 0;
  }

  .page-about .rec-stats {
    gap: 16px 40px;
  }

  .page-about .zone {
    grid-template-columns: repeat(7, minmax(0, 1fr));
  }

  .page-about .eco-strip {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
  }

  .page-about .eco-strip li {
    flex-direction: column;
    gap: 10px;
  }

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

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

  .page-about .about-split {
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
    gap: clamp(32px, 5vw, 72px);
  }

  .page-about .rec-grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    align-items: start;
  }

  .page-about .team-grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    align-items: start;
  }

  .page-about .eco-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: clamp(24px, 3.2vw, 44px);
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-about [data-reveal],
  .page-about .tl__tag,
  .page-about .tl-jump a,
  .page-about .next-link,
  .page-about .next-link__arrow {
    transition: none !important;
  }

  .page-about .next-link:hover .next-link__arrow,
  .page-about .next-link:focus-visible .next-link__arrow {
    transform: none;
  }
}
<<<PAGE_CSS_END>>>