.page-about {
  --ab-line-x: 8px;
  --ab-list-pad: 48px;
  --ab-gap: 32px;
  --ab-eng-a: #C8FF3D;
  --ab-eng-b: #3FE0A6;
  --ab-edit-a: #2BD9FF;
  --ab-edit-b: #14425A;
  --ab-prod-a: #FF7A1A;
  --ab-prod-b: #8C3A05;
  --ab-tint: rgba(200, 255, 61, .14);
}

/* ---------- 面包屑与首屏 ---------- */

.page-about .ab-hero {
  padding-top: 24px;
  padding-bottom: 56px;
  background:
    radial-gradient(1100px 420px at 12% -10%, rgba(43, 217, 255, .10), transparent 62%),
    radial-gradient(760px 380px at 92% 8%, rgba(200, 255, 61, .08), transparent 68%),
    var(--c-void);
}

.page-about .breadcrumb {
  margin-bottom: 28px;
}

.page-about .ab-hero__grid {
  align-items: start;
  row-gap: 28px;
}

.page-about .ab-hero__copy h1 {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(32px, 7vw, 56px);
  line-height: 1.1;
  letter-spacing: -.02em;
  color: var(--c-text);
  margin: 14px 0 18px;
  position: relative;
  padding-left: 16px;
}

.page-about .ab-hero__copy h1::before {
  content: "";
  position: absolute;
  left: 0;
  top: .18em;
  bottom: .18em;
  width: 4px;
  background: linear-gradient(180deg, var(--c-lime), var(--c-blue));
  transform: skewY(-9deg);
}

.page-about .ab-hero__lead {
  font-size: 17px;
  line-height: 1.78;
  color: var(--c-text);
  max-width: 34em;
  margin: 0 0 24px;
}

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

.page-about .ab-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.page-about .ab-hero__stat {
  background: linear-gradient(160deg, var(--c-panel), rgba(5, 8, 15, .9));
  border: 1px solid var(--c-stroke);
  padding: 16px 14px 14px;
  clip-path: var(--cut-corner);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-about .ab-hero__stat .stat__value {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 26px;
  line-height: 1.1;
  color: var(--c-lime);
  letter-spacing: .02em;
}

.page-about .ab-hero__stat:nth-child(2) .stat__value {
  color: var(--c-blue);
}

.page-about .ab-hero__stat:nth-child(4) .stat__value {
  color: var(--c-orange);
}

.page-about .ab-hero__stat .stat__label {
  font-size: 13px;
  line-height: 1.5;
  color: var(--c-muted);
}

/* ---------- 起点 ---------- */

.page-about .ab-start {
  background: var(--c-void);
  border-top: 1px solid var(--c-stroke);
}

.page-about .ab-start__grid {
  align-items: start;
  row-gap: 28px;
}

.page-about .ab-start__copy .section__title {
  margin-top: 8px;
}

.page-about .ab-start__copy p {
  color: var(--c-text);
  margin: 0 0 16px;
}

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

.page-about .ab-start__figure .img-frame {
  border: 1px solid var(--c-stroke);
}

/* ---------- 时间轴 ---------- */

.page-about .ab-timeline {
  background:
    linear-gradient(180deg, rgba(26, 20, 54, .96), rgba(5, 8, 15, .96)),
    var(--c-indigo);
  border-top: 1px solid var(--c-stroke);
}

.page-about .ab-timeline__band {
  margin: 8px 0 44px;
}

.page-about .ab-timeline__band .img-frame {
  border: 1px solid var(--c-stroke);
}

.page-about .ab-timeline__list {
  list-style: none;
  margin: 0;
  padding: 0 0 0 var(--ab-list-pad);
  position: relative;
}

.page-about .ab-timeline__list::before {
  content: "";
  position: absolute;
  left: var(--ab-line-x);
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: linear-gradient(180deg, var(--c-lime), var(--c-blue) 48%, var(--c-stroke));
  opacity: .55;
}

.page-about .ab-tl {
  position: relative;
}

.page-about .ab-tl + .ab-tl {
  margin-top: var(--ab-gap);
}

.page-about .ab-tl::before {
  content: "";
  position: absolute;
  left: -47px;
  top: 24px;
  width: 14px;
  height: 14px;
  background: var(--c-void);
  border: 2px solid var(--c-stroke);
  transform: rotate(45deg);
  transition: background var(--dur), border-color var(--dur), box-shadow var(--dur);
}

.page-about .ab-tl.is-revealed::before {
  background: var(--c-lime);
  border-color: var(--c-lime);
  box-shadow: 0 0 0 4px var(--ab-tint), 0 0 18px rgba(200, 255, 61, .45);
}

.page-about .ab-tl__panel {
  border: 1px solid var(--c-stroke);
}

.page-about .ab-tl__title {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 20px;
  line-height: 1.35;
  letter-spacing: -.01em;
  color: var(--c-text);
  margin: 0 0 10px;
}

.page-about .ab-tl__text {
  font-size: 15px;
  line-height: 1.78;
  color: var(--c-text);
  margin: 0;
  max-width: 40em;
}

.page-about .ab-tl__panel .panel__foot {
  color: var(--c-muted);
}

/* ---------- 团队 ---------- */

.page-about .ab-team {
  background:
    radial-gradient(760px 420px at 88% 0%, rgba(63, 224, 166, .10), transparent 66%),
    var(--c-forest);
  border-top: 1px solid var(--c-stroke);
}

.page-about .ab-team__chart {
  margin: 4px 0 32px;
}

.page-about .ab-team__bar {
  display: flex;
  gap: 5px;
  height: 58px;
  align-items: stretch;
}

.page-about .ab-team__seg {
  flex: var(--seg) 1 0;
  min-width: 0;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  clip-path: polygon(0 0, 100% 0, calc(100% - 12px) 100%, 0 100%);
  cursor: default;
  transition: filter var(--dur), transform var(--dur);
}

.page-about .ab-team__seg--eng {
  background: linear-gradient(135deg, var(--ab-eng-a), var(--ab-eng-b));
}

.page-about .ab-team__seg--edit {
  background: linear-gradient(135deg, var(--ab-edit-a), var(--ab-edit-b));
}

.page-about .ab-team__seg--prod {
  background: linear-gradient(135deg, var(--ab-prod-a), var(--ab-prod-b));
}

.page-about .ab-team__seg:hover,
.page-about .ab-team__seg:focus-visible {
  filter: brightness(1.12);
  transform: translateY(-2px);
}

.page-about .ab-team__seg-label {
  font-size: 14px;
  font-weight: 700;
  color: #05080F;
  letter-spacing: .04em;
}

.page-about .ab-team__seg::after {
  content: attr(data-role);
  position: absolute;
  left: 50%;
  bottom: calc(100% + 10px);
  transform: translateX(-50%) translateY(4px);
  opacity: 0;
  pointer-events: none;
  white-space: nowrap;
  background: var(--c-panel);
  border: 1px solid var(--c-stroke);
  color: var(--c-text);
  font-family: var(--font-body);
  font-size: 13px;
  line-height: 1.5;
  padding: 6px 10px;
  transition: opacity var(--dur-fast), transform var(--dur-fast);
  z-index: 3;
}

.page-about .ab-team__seg:hover::after,
.page-about .ab-team__seg:focus-visible::after {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.page-about .ab-team__scale {
  font-size: 13px;
  color: var(--c-muted);
  margin: 10px 0 0;
}

.page-about .ab-team__grid {
  align-items: start;
  row-gap: 28px;
}

.page-about .ab-team__roles {
  display: grid;
  gap: 18px;
}

.page-about .ab-role {
  border-left: 3px solid var(--c-lime);
  padding: 2px 0 2px 16px;
}

.page-about .ab-role:nth-child(2) {
  border-left-color: var(--c-blue);
}

.page-about .ab-role:nth-child(3) {
  border-left-color: var(--c-orange);
}

.page-about .ab-role__name {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 16px;
  line-height: 1.4;
  color: var(--c-text);
  margin: 0 0 8px;
}

.page-about .ab-role__text {
  font-size: 15px;
  line-height: 1.78;
  color: var(--c-muted);
  margin: 0;
}

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

.page-about .ab-team__figure .img-frame {
  border: 1px solid var(--c-stroke);
}

/* ---------- 合作与生态 ---------- */

.page-about .ab-partners {
  background:
    radial-gradient(680px 380px at 6% 12%, rgba(43, 217, 255, .09), transparent 64%),
    var(--c-void);
  border-top: 1px solid var(--c-stroke);
}

.page-about .ab-partners__grid {
  align-items: start;
  row-gap: 28px;
}

.page-about .ab-partners__body {
  display: grid;
  gap: 24px;
}

.page-about .ab-partners__panel {
  border: 1px solid var(--c-stroke);
}

.page-about .ab-partners__text {
  font-size: 15px;
  line-height: 1.78;
  color: var(--c-text);
  margin: 0 0 14px;
}

.page-about .ab-partners__text:last-child {
  margin-bottom: 0;
}

.page-about .ab-partners__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .ab-partners__list li {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 12px 14px;
  background: var(--c-panel);
  border-left: 2px solid var(--c-blue);
  font-size: 15px;
  line-height: 1.6;
  color: var(--c-text);
}

.page-about .ab-partners__list .mono {
  font-size: 18px;
  font-weight: 700;
  color: var(--c-blue);
  min-width: 44px;
}

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

.page-about .ab-partners__frame {
  aspect-ratio: 1 / 1;
  border: 1px solid var(--c-stroke);
}

/* ---------- 为什么留下来 ---------- */

.page-about .ab-why {
  background:
    linear-gradient(180deg, rgba(58, 16, 32, .92), rgba(5, 8, 15, .96)),
    var(--c-wine);
  border-top: 1px solid var(--c-stroke);
}

.page-about .ab-why__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-about .ab-why__card {
  background: linear-gradient(155deg, rgba(5, 8, 15, .82), rgba(12, 21, 35, .9));
  border: 1px solid var(--c-stroke);
  clip-path: var(--cut-corner);
  padding: 22px 20px 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-about .ab-why__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 30px;
  line-height: 1;
  letter-spacing: .02em;
  color: var(--c-lime);
}

.page-about .ab-why__card:nth-child(2) .ab-why__num {
  color: var(--c-blue);
}

.page-about .ab-why__card:nth-child(3) .ab-why__num {
  color: var(--c-mint);
}

.page-about .ab-why__card:nth-child(4) .ab-why__num {
  color: var(--c-orange);
}

.page-about .ab-why__title {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 17px;
  line-height: 1.4;
  color: var(--c-text);
  margin: 0;
}

.page-about .ab-why__text {
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-muted);
  margin: 0;
}

.page-about .ab-why__cta {
  margin-top: 36px;
  padding-top: 28px;
  border-top: 1px solid var(--c-stroke);
  display: grid;
  gap: 18px;
}

.page-about .ab-why__cta-text {
  font-size: 16px;
  line-height: 1.75;
  color: var(--c-text);
  margin: 0;
  max-width: 34em;
}

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

/* ---------- 图片基础保障 ---------- */

.page-about img {
  max-width: 100%;
  height: auto;
  display: block;
}

.page-about .img-frame__media {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-about .ab-hero__stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .page-about .ab-why__cta {
    grid-template-columns: 1fr auto;
    align-items: center;
  }
}

@media (min-width: 768px) {
  .page-about .ab-hero {
    padding-top: 36px;
    padding-bottom: 72px;
  }

  .page-about .ab-hero__stat {
    padding: 20px 18px 18px;
  }

  .page-about .ab-hero__stat .stat__value {
    font-size: 30px;
  }

  .page-about .ab-tl__title {
    font-size: 22px;
  }

  .page-about .ab-team__bar {
    height: 64px;
  }
}

@media (min-width: 1024px) {
  .page-about {
    --ab-gap: 40px;
  }

  .page-about .ab-hero__grid {
    align-items: center;
  }

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

  .page-about .ab-timeline__list {
    padding-left: 72px;
  }

  .page-about .ab-timeline__list::before {
    left: 13px;
  }

  .page-about .ab-tl::before {
    left: -67px;
    top: 30px;
    width: 16px;
    height: 16px;
  }

  .page-about .ab-tl__panel .panel__body {
    padding-right: 12px;
  }

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

  .page-about .ab-partners__figure {
    padding-top: 8px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .ab-team__seg,
  .page-about .ab-tl::before {
    transition: none;
  }

  .page-about .ab-team__seg:hover,
  .page-about .ab-team__seg:focus-visible {
    transform: none;
  }
}
<<<END>>>

.page-about {
  --seg: inherit;
}