.page-about {
  --about-copy: #C6D4E1;
  --about-card: linear-gradient(158deg, rgba(18, 42, 66, .92) 0%, rgba(11, 31, 51, .95) 100%);
  --about-hair: 1px solid var(--c-border);
  color: var(--c-text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.68;
  padding-bottom: clamp(40px, 7vw, 88px);
  background-image:
    linear-gradient(rgba(42, 71, 99, .16) 1px, transparent 1px),
    linear-gradient(90deg, rgba(42, 71, 99, .11) 1px, transparent 1px);
  background-size: 64px 64px, 64px 64px;
}

.page-about a {
  color: var(--c-mint);
}

.page-about a:focus-visible,
.page-about [tabindex]:focus-visible,
.page-about .btn:focus-visible {
  outline: 2px solid var(--c-orange);
  outline-offset: 3px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  border-bottom: var(--about-hair);
  padding: clamp(18px, 3.5vw, 34px) 0 clamp(28px, 5vw, 56px);
  background:
    radial-gradient(85% 130% at 100% 0%, rgba(47, 211, 168, .13), transparent 62%),
    radial-gradient(70% 120% at 0% 0%, rgba(255, 107, 53, .10), transparent 58%);
}

.page-about .breadcrumbs {
  margin-bottom: clamp(18px, 3vw, 30px);
}

.page-about .about-hero__grid {
  display: grid;
  gap: 26px;
}

.page-about .about-hero__kicker {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .16em;
  color: var(--c-orange);
}

.page-about .about-hero__title {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(32px, 5.4vw, 62px);
  line-height: 1.06;
  letter-spacing: -.02em;
  text-wrap: balance;
}

.page-about .about-hero__lede {
  margin: 0 0 24px;
  max-width: 62ch;
  color: var(--about-copy);
  font-size: clamp(15px, 1.6vw, 17px);
}

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

.page-about .hero-panel {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--c-border);
  border: var(--about-hair);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .hero-panel__cell {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 16px;
  background: var(--c-cabin);
  transition: background var(--dur) var(--ease);
}

.page-about .hero-panel__cell:hover {
  background: #16334F;
}

.page-about .hero-panel__num {
  font-family: var(--font-mono);
  font-size: clamp(22px, 3.4vw, 30px);
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--c-text);
}

.page-about .hero-panel__num--orange {
  color: var(--c-orange);
}

.page-about .hero-panel__num--mint {
  color: var(--c-mint);
}

.page-about .hero-panel__label {
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--c-steel);
}

/* ---------- 双栏骨架 ---------- */
.page-about .about-shell {
  display: grid;
  gap: 20px;
  padding-top: clamp(20px, 3vw, 36px);
}

.page-about .about-toc {
  position: sticky;
  top: 0;
  z-index: 3;
  padding: 6px 0 10px;
  background: linear-gradient(180deg, var(--c-deep) 72%, rgba(11, 31, 51, 0));
}

.page-about .about-toc__title {
  display: none;
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .22em;
  color: var(--c-steel);
}

.page-about .about-toc__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-about .about-toc__list::-webkit-scrollbar {
  display: none;
}

.page-about .about-toc__link {
  display: inline-block;
  white-space: nowrap;
  padding: 7px 14px;
  border: var(--about-hair);
  border-radius: var(--radius-pill);
  color: var(--c-steel);
  font-size: 13.5px;
  text-decoration: none;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-about .about-toc__link:hover,
.page-about .about-toc__link:focus-visible {
  color: var(--c-text);
  border-color: var(--c-orange);
  background: rgba(255, 107, 53, .12);
}

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

/* ---------- 章节骨架 ---------- */
.page-about .about-section {
  padding: clamp(26px, 4vw, 46px) 0;
  border-top: var(--about-hair);
}

.page-about .about-section:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-about .about-section__head {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 18px;
}

.page-about .about-section__index {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .1em;
  color: var(--c-orange);
}

.page-about .about-section__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(23px, 3.2vw, 34px);
  line-height: 1.2;
  letter-spacing: -.015em;
  text-wrap: balance;
}

.page-about .about-lede {
  margin: 0 0 20px;
  max-width: 60ch;
  color: var(--about-copy);
}

.page-about .about-copy {
  margin: 16px 0 0;
  max-width: 68ch;
  color: var(--about-copy);
  font-size: 15.5px;
}

.page-about .about-note {
  margin: 18px 0 0;
  font-size: 13.5px;
  color: var(--c-steel);
}

.page-about .about-inline-link {
  color: var(--c-mint);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 211, 168, .45);
  padding-bottom: 1px;
}

.page-about .about-inline-link:hover {
  border-bottom-color: var(--c-mint);
}

.page-about .about-vlabel {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--c-steel);
}

/* ---------- 服务主轴 ---------- */
.page-about .pillar-list {
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--c-border);
  border: var(--about-hair);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .pillar-item {
  display: grid;
  gap: 6px;
  padding: 18px 20px;
  background: var(--about-card);
  border-left: 3px solid var(--c-border);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-about .pillar-item:hover {
  border-left-color: var(--c-orange);
}

.page-about .pillar-item__key {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 19px;
  letter-spacing: .01em;
  color: var(--c-text);
}

.page-about .pillar-item p {
  margin: 0;
  color: var(--about-copy);
  font-size: 15px;
}

/* ---------- 图片容器 ---------- */
.page-about .about-figure {
  margin: 0 0 22px;
  border: var(--about-hair);
  border-radius: var(--radius);
  background: var(--about-card);
  overflow: hidden;
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  aspect-ratio: 16 / 7;
}

.page-about .about-figure--square img {
  aspect-ratio: 14 / 9;
}

.page-about .about-figure--map img {
  aspect-ratio: 3 / 2;
}

.page-about .about-figure figcaption {
  padding: 11px 16px 13px;
  border-top: var(--about-hair);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .02em;
  color: var(--c-steel);
}

/* ---------- 年份轴 ---------- */
.page-about .year-axis {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .year-card {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: baseline;
  gap: 4px 12px;
  padding: 14px 16px;
  border: var(--about-hair);
  border-left: 3px solid var(--c-border);
  border-radius: var(--radius-sm);
  background: var(--about-card);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .year-card:hover,
.page-about .year-card:focus-within {
  transform: translateY(-2px);
  border-color: rgba(255, 107, 53, .55);
}

.page-about .year-card--current {
  border-left-color: var(--c-orange);
}

.page-about .year-card__year {
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--c-text);
}

.page-about .year-card--current .year-card__year {
  color: var(--c-orange);
}

.page-about .year-card__stage {
  font-size: 13.5px;
  letter-spacing: .04em;
  color: var(--c-mint);
}

.page-about .year-card__detail {
  grid-column: 1 / -1;
  max-height: none;
  opacity: 1;
  overflow: hidden;
  transition: max-height 220ms var(--ease), opacity 220ms var(--ease), margin-top 220ms var(--ease);
}

.page-about .year-card__detail p {
  margin: 6px 0 0;
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--about-copy);
}

/* ---------- 团队 ---------- */
.page-about .team-grid {
  display: grid;
  gap: 18px;
}

.page-about .team-anchor {
  display: flex;
  align-items: flex-end;
  gap: 10px;
  padding: 18px 20px;
  border: var(--about-hair);
  border-radius: var(--radius);
  background:
    radial-gradient(120% 140% at 100% 0%, rgba(255, 107, 53, .16), transparent 60%),
    var(--about-card);
}

.page-about .team-anchor__num {
  font-family: var(--font-mono);
  font-size: clamp(46px, 9vw, 72px);
  line-height: .9;
  letter-spacing: -.04em;
  color: var(--c-text);
}

.page-about .team-anchor__unit {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 17px;
  color: var(--c-orange);
  padding-bottom: 6px;
}

.page-about .team-anchor .about-vlabel {
  margin-left: auto;
  padding-bottom: 4px;
}

.page-about .team-roles {
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--c-border);
  border: var(--about-hair);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .team-role {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: baseline;
  gap: 2px 14px;
  padding: 14px 18px;
  background: var(--c-cabin);
  transition: background var(--dur) var(--ease);
}

.page-about .team-role:hover {
  background: #16334F;
}

.page-about .team-role__num {
  grid-row: span 2;
  font-family: var(--font-mono);
  font-size: 22px;
  line-height: 1.1;
  color: var(--c-mint);
}

.page-about .team-role__name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 16px;
  color: var(--c-text);
}

.page-about .team-role__desc {
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--c-steel);
}

/* ---------- 实验室 ---------- */
.page-about .lab-grid {
  display: grid;
  gap: 18px;
}

.page-about .lab-grid .about-figure {
  margin-bottom: 0;
}

.page-about .lab-figures {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.page-about .lab-figure {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 14px 16px;
  border: var(--about-hair);
  border-radius: var(--radius-sm);
  background: var(--about-card);
}

.page-about .lab-figure__num {
  font-family: var(--font-mono);
  font-size: clamp(24px, 4.6vw, 34px);
  line-height: 1;
  letter-spacing: -.03em;
  color: var(--c-mint);
}

.page-about .lab-figure__unit {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--c-steel);
}

.page-about .lab-figure__label {
  margin-top: 6px;
  font-size: 12.5px;
  line-height: 1.45;
  color: var(--c-steel);
}

/* ---------- 资质 ---------- */
.page-about .cred-grid {
  display: grid;
  gap: 14px;
}

.page-about .cred-card {
  padding: 18px 18px 16px;
  border: var(--about-hair);
  border-radius: var(--radius);
  background: var(--about-card);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-about .cred-card:hover,
.page-about .cred-card:focus-within {
  transform: translateY(-2px);
  border-color: rgba(255, 107, 53, .55);
  box-shadow: var(--shadow-panel);
}

.page-about .cred-card__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 18px;
  line-height: 1.35;
  color: var(--c-text);
}

.page-about .cred-card__more {
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: max-height 220ms var(--ease), opacity 220ms var(--ease), margin-top 220ms var(--ease);
}

.page-about .cred-card:hover .cred-card__more,
.page-about .cred-card:focus-within .cred-card__more {
  max-height: 180px;
  opacity: 1;
  margin-top: 10px;
}

.page-about .cred-card__more p {
  margin: 0;
  padding-top: 10px;
  border-top: 1px dashed var(--c-border);
  font-size: 14px;
  line-height: 1.6;
  color: var(--about-copy);
}

/* ---------- 覆盖 ---------- */
.page-about .coverage-grid {
  display: grid;
  gap: 20px;
}

.page-about .coverage-copy .about-copy {
  margin-top: 0;
}

.page-about .coverage-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .coverage-grid .about-figure {
  margin-bottom: 0;
}

/* ---------- 下一步 ---------- */
.page-about .about-next .next-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

/* ---------- 断点 ---------- */
@media (min-width: 720px) {
  .page-about .lab-grid {
    grid-template-columns: 1.25fr 1fr;
    align-items: start;
  }

  .page-about .lab-figures {
    grid-template-columns: 1fr;
  }

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

  .page-about .coverage-grid {
    grid-template-columns: 1.15fr .85fr;
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: 1.45fr .85fr;
    align-items: start;
    gap: 40px;
  }

  .page-about .team-grid {
    grid-template-columns: minmax(180px, 240px) 1fr;
    align-items: stretch;
  }

  .page-about .team-anchor {
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 6px;
  }

  .page-about .team-anchor .about-vlabel {
    writing-mode: horizontal-tb;
    margin: 8px 0 0;
    padding: 0;
  }

  .page-about .year-axis {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 14px;
    padding-top: 20px;
    position: relative;
  }

  .page-about .year-axis::before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 5px;
    height: 1px;
    background: var(--c-border);
  }

  .page-about .year-card {
    display: block;
    padding: 16px 14px;
    border-left-width: 1px;
    border-top: 3px solid var(--c-border);
    opacity: .9;
    transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease), opacity var(--dur) var(--ease);
  }

  .page-about .year-card--current {
    border-left-color: var(--c-border);
    border-top-color: var(--c-orange);
    opacity: 1;
  }

  .page-about .year-card::before {
    content: "";
    position: absolute;
    top: -25px;
    left: 50%;
    transform: translateX(-50%);
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: var(--c-steel);
    box-shadow: 0 0 0 4px var(--c-deep);
    transition: background var(--dur) var(--ease);
  }

  .page-about .year-card--current::before {
    background: var(--c-orange);
  }

  .page-about .year-card:hover,
  .page-about .year-card:focus-within {
    opacity: 1;
    border-top-color: var(--c-orange);
  }

  .page-about .year-card__year {
    display: block;
    font-size: 22px;
  }

  .page-about .year-card__stage {
    display: block;
    margin-top: 4px;
    font-size: 12.5px;
  }

  .page-about .year-card__detail {
    max-height: 0;
    opacity: 0;
    margin-top: 0;
  }

  .page-about .year-card:hover .year-card__detail,
  .page-about .year-card:focus-within .year-card__detail {
    max-height: 260px;
    opacity: 1;
    margin-top: 6px;
  }
}

@media (min-width: 1024px) {
  .page-about .about-shell {
    grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
    gap: 36px;
    padding-top: clamp(28px, 3.5vw, 48px);
  }

  .page-about .about-toc {
    position: sticky;
    top: 112px;
    align-self: start;
    padding: 0;
    background: none;
  }

  .page-about .about-toc__title {
    display: block;
  }

  .page-about .about-toc__list {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding: 0;
    border-left: var(--about-hair);
  }

  .page-about .about-toc__link {
    display: block;
    padding: 9px 12px;
    margin-left: -1px;
    border: 0;
    border-left: 2px solid transparent;
    border-radius: 0;
    background: none;
    font-size: 14px;
  }

  .page-about .about-toc__link:hover,
  .page-about .about-toc__link:focus-visible {
    border-left-color: var(--c-orange);
    background: linear-gradient(90deg, rgba(255, 107, 53, .14), transparent);
    color: var(--c-text);
  }

  .page-about .about-section {
    padding: clamp(30px, 3.4vw, 50px) 0;
  }

  .page-about .pillar-item {
    grid-template-columns: minmax(110px, 150px) 1fr;
    align-items: start;
    gap: 0 20px;
    padding: 20px 24px;
  }

  .page-about .cred-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-about .year-card,
  .page-about .cred-card,
  .page-about .pillar-item,
  .page-about .team-role,
  .page-about .hero-panel__cell,
  .page-about .about-toc__link,
  .page-about .year-card__detail,
  .page-about .cred-card__more {
    transition: none;
  }
}
<<<PAGE_CSS_END>>>