.page-about {
  display: block;
  color: var(--near);
  font-family: var(--f-body);
  padding-bottom: clamp(36px, 6vw, 80px);
}

.page-about .crumbs {
  padding: 14px 0 4px;
}

/* ---------- 首屏 ---------- */
.page-about .ab-hero {
  padding: clamp(18px, 3.5vw, 36px) 0 clamp(26px, 4.5vw, 50px);
}

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

@media (min-width: 900px) {
  .page-about .ab-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    column-gap: clamp(24px, 4vw, 64px);
    align-items: end;
  }
}

.page-about .ab-hero__h1 {
  margin: 14px 0 16px;
  font-family: var(--f-display);
  font-weight: 700;
  font-size: clamp(29px, 5vw, 56px);
  line-height: 1.14;
  letter-spacing: .01em;
  color: var(--near);
}

.page-about .ab-hero__lede {
  margin: 0;
  max-width: 60ch;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.82;
  color: var(--near);
}

.page-about .ab-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r);
  overflow: hidden;
}

.page-about .ab-stat {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 8px;
  min-height: 96px;
  padding: 16px 14px 18px;
  background: var(--panel);
}

.page-about .ab-stat__num {
  font-family: var(--f-mono);
  font-size: clamp(22px, 2.6vw, 30px);
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
  letter-spacing: -0.01em;
}

.page-about .ab-stat:nth-child(3) .ab-stat__num {
  color: var(--near);
}

.page-about .ab-stat__lab {
  font-size: 12px;
  line-height: 1.5;
  color: var(--cool);
  letter-spacing: .02em;
}

/* ---------- 章节索引条 ---------- */
.page-about .ab-index {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  padding: 13px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  scrollbar-width: none;
}

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

.page-about .ab-index__link {
  flex: none;
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  padding: 7px 11px;
  border: 1px solid var(--line);
  border-radius: var(--r);
  font-size: 13px;
  color: var(--cool);
  text-decoration: none;
  white-space: nowrap;
  transition: color .18s var(--ease), border-color .18s var(--ease), background-color .18s var(--ease);
}

.page-about .ab-index__link .mono {
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--cyan);
}

.page-about .ab-index__link:hover,
.page-about .ab-index__link:focus-visible {
  color: var(--near);
  border-color: var(--cyan);
  background: rgba(0, 231, 193, .07);
}

/* ---------- 章节骨架 ---------- */
.page-about .ab-sec {
  display: grid;
  gap: 18px;
  padding: clamp(34px, 5vw, 68px) 0;
  border-top: 1px solid var(--line);
}

.page-about .ab-sec:first-of-type {
  border-top: none;
}

@media (min-width: 940px) {
  .page-about .ab-sec {
    grid-template-columns: minmax(180px, 240px) minmax(0, 1fr);
    column-gap: clamp(28px, 5vw, 76px);
  }

  .page-about .ab-sec__rail {
    position: sticky;
    top: 88px;
    align-self: start;
  }
}

.page-about .ab-sec__num {
  display: block;
  font-family: var(--f-display);
  font-size: clamp(44px, 5.6vw, 76px);
  font-weight: 700;
  line-height: .82;
  letter-spacing: .02em;
  color: var(--lift);
  -webkit-text-stroke: 1px var(--line);
}

.page-about .ab-sec__name {
  margin: 14px 0 0;
  font-family: var(--f-display);
  font-weight: 700;
  font-size: clamp(19px, 2.2vw, 26px);
  line-height: 1.32;
  letter-spacing: .02em;
  color: var(--near);
}

.page-about .ab-sec__body {
  max-width: 78ch;
  font-size: clamp(15px, 1.3vw, 17px);
  line-height: 1.8;
  color: var(--near);
}

.page-about .ab-sec__body > p {
  margin: 0 0 1.05em;
}

.page-about .ab-sec__body a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 231, 193, .35);
  transition: border-color .18s var(--ease);
}

.page-about .ab-sec__body a:hover {
  border-bottom-color: var(--cyan);
}

.page-about .ab-sec__body .ab-next {
  margin: 26px 0 0;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
  font-size: 13px;
}

.page-about .ab-sec__body .ab-next a {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  color: var(--cool);
  border-bottom: none;
}

.page-about .ab-sec__body .ab-next a:hover {
  color: var(--cyan);
}

.page-about .ab-sec__body .ab-next .mono {
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--cyan);
}

/* ---------- 02 时间线 ---------- */
.page-about .ab-tl {
  margin: 26px 0 24px;
}

.page-about .ab-tl__banner {
  position: relative;
  height: clamp(104px, 17vw, 176px);
  margin-bottom: 26px;
  border: 1px solid var(--line);
  border-radius: var(--r);
  overflow: hidden;
  background: var(--panel);
}

.page-about .ab-tl__banner img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
  opacity: .5;
}

.page-about .ab-tl__banner::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(6, 11, 20, .2), rgba(6, 11, 20, .92));
}

.page-about .ab-tl__list {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(228px, 1fr);
  margin: 0;
  padding: 0 0 10px;
  list-style: none;
  overflow-x: auto;
  scroll-snap-type: x proximity;
  scrollbar-width: thin;
}

.page-about .ab-node {
  position: relative;
  padding: 34px 20px 0 0;
  scroll-snap-align: start;
}

.page-about .ab-node::before {
  content: "";
  position: absolute;
  top: 26px;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--line);
}

.page-about .ab-node__dot {
  position: absolute;
  top: 22px;
  left: 0;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(0, 231, 193, .14);
}

.page-about .ab-node__tag {
  display: inline-block;
  margin-bottom: 12px;
  padding: 3px 9px;
  border: 1px solid rgba(0, 231, 193, .32);
  border-radius: 999px;
  background: rgba(0, 231, 193, .1);
  font-size: 11px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-about .ab-node__t {
  margin: 0 0 8px;
  font-family: var(--f-display);
  font-weight: 700;
  font-size: 17px;
  line-height: 1.35;
  letter-spacing: .02em;
  color: var(--near);
}

.page-about .ab-node__d {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--cool);
}

.page-about .ab-node__more {
  margin: 0;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  font-size: 13px;
  line-height: 1.68;
  color: var(--cool);
  transition: max-height .3s var(--ease), opacity .25s var(--ease), margin-top .3s var(--ease);
}

.page-about .ab-node:hover .ab-node__more,
.page-about .ab-node:focus-within .ab-node__more {
  max-height: 160px;
  margin-top: 8px;
  opacity: 1;
}

@media (hover: none) {
  .page-about .ab-node__more {
    max-height: 160px;
    margin-top: 8px;
    opacity: 1;
  }
}

/* ---------- 03 团队 ---------- */
.page-about .ab-team {
  display: grid;
  gap: 22px;
  margin: 24px 0 8px;
}

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

.page-about .ab-bar {
  padding: 15px 0;
  border-bottom: 1px solid var(--line);
}

.page-about .ab-bar:first-child {
  border-top: 1px solid var(--line);
}

.page-about .ab-bar__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}

.page-about .ab-bar__name {
  font-family: var(--f-display);
  font-weight: 700;
  font-size: 16px;
  letter-spacing: .02em;
  color: var(--near);
}

.page-about .ab-bar__num {
  font-size: 20px;
  font-weight: 700;
  color: var(--cyan);
}

.page-about .ab-bar__track {
  height: 5px;
  margin: 10px 0 9px;
  border-radius: 999px;
  background: var(--lift);
  overflow: hidden;
}

.page-about .ab-bar__fill {
  display: block;
  height: 100%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--cyan), rgba(0, 231, 193, .42));
}

.page-about .ab-bar[data-tag="risk"] .ab-bar__fill {
  background: linear-gradient(90deg, var(--orange), rgba(255, 106, 43, .42));
}

.page-about .ab-bar[data-tag="risk"] .ab-bar__num {
  color: var(--orange);
}

.page-about .ab-bar__role {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--cool);
}

.page-about .ab-team__fig {
  margin: 0;
}

@media (min-width: 1040px) {
  .page-about .ab-team {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    grid-template-areas:
      "filters filters"
      "list fig";
    column-gap: clamp(24px, 3vw, 48px);
  }

  .page-about .ab-team__filters {
    grid-area: filters;
  }

  .page-about .ab-team__list {
    grid-area: list;
  }

  .page-about .ab-team__fig {
    grid-area: fig;
    position: sticky;
    top: 96px;
    align-self: start;
  }
}

/* ---------- 04 校对节奏 ---------- */
.page-about .ab-cadence {
  display: grid;
  gap: 12px;
  margin: 22px 0 26px;
}

@media (min-width: 720px) {
  .page-about .ab-cadence {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-about .ab-cadence__item {
  padding: 16px 16px 18px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-left: 2px solid var(--cyan);
  border-radius: var(--r);
}

.page-about .ab-cadence__num {
  display: block;
  margin-bottom: 8px;
  font-size: 18px;
  font-weight: 700;
  color: var(--cyan);
}

.page-about .ab-cadence__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--cool);
}

/* ---------- 05 合作 ---------- */
.page-about .ab-partners__fig {
  margin: 24px 0 26px;
  max-width: 720px;
}

/* ---------- 06 资质 ---------- */
.page-about .ab-honor {
  display: grid;
  gap: 14px;
  margin: 24px 0 8px;
}

.page-about .ab-honor__card {
  position: relative;
  overflow: hidden;
  padding: 22px 20px 24px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--r);
}

.page-about .ab-honor__card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(142deg, rgba(0, 231, 193, .08), transparent 58%);
  pointer-events: none;
}

.page-about .ab-honor__year {
  position: relative;
  display: inline-block;
  margin-bottom: 10px;
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--cyan);
}

.page-about .ab-honor__card h3 {
  position: relative;
  margin: 0 0 8px;
  font-family: var(--f-display);
  font-weight: 700;
  font-size: 17px;
  line-height: 1.4;
  letter-spacing: .02em;
  color: var(--near);
}

.page-about .ab-honor__card p {
  position: relative;
  margin: 0;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--cool);
}

.page-about .ab-honor__card p a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 231, 193, .35);
}

@media (min-width: 860px) {
  .page-about .ab-honor {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    row-gap: 0;
  }

  .page-about .ab-honor__card:nth-child(2) {
    transform: translateY(26px);
  }

  .page-about .ab-honor__card--wide {
    grid-column: 1 / -1;
    margin-top: 52px;
    transform: none;
  }
}

/* ---------- 尾段入口 ---------- */
.page-about .ab-cta {
  position: relative;
  overflow: hidden;
  margin-top: clamp(40px, 6vw, 84px);
  padding: clamp(26px, 3.6vw, 46px) clamp(20px, 3.4vw, 48px);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--r);
}

.page-about .ab-cta::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--orange));
}

.page-about .ab-cta__inner {
  display: grid;
  gap: 22px;
}

@media (min-width: 880px) {
  .page-about .ab-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
    column-gap: clamp(28px, 4vw, 64px);
  }
}

.page-about .ab-cta h2 {
  margin: 10px 0 12px;
  font-family: var(--f-display);
  font-weight: 700;
  font-size: clamp(21px, 2.6vw, 32px);
  line-height: 1.28;
  letter-spacing: .02em;
  color: var(--near);
}

.page-about .ab-cta p {
  margin: 0;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--cool);
}

.page-about .ab-cta .eyebrow {
  color: var(--cyan);
}

.page-about .ab-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 图片兜底 ---------- */
.page-about img {
  max-width: 100%;
  height: auto;
}
<<<END>>>