.page-about {
  --ab-line: rgba(14, 74, 128, 0.14);
  --ab-line-soft: rgba(251, 252, 253, 0.16);
  background: var(--af-mist);
  color: var(--af-ink-800);
  font-family: var(--af-font);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-about .ab-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: var(--af-blue-900);
  color: var(--af-mist);
  padding: clamp(56px, 11vw, 140px) 0 clamp(44px, 7vw, 88px);
}

.page-about .ab-hero__bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    linear-gradient(118deg, transparent 0 56%, rgba(244, 98, 58, 0.22) 56% 74%, transparent 74%),
    linear-gradient(118deg, transparent 0 78%, rgba(47, 183, 154, 0.16) 78% 100%),
    radial-gradient(120% 88% at 88% 0%, rgba(27, 111, 184, 0.62), transparent 62%);
}

.page-about .ab-hero__inner {
  display: flex;
  flex-direction: column;
  gap: clamp(16px, 2.6vw, 26px);
}

.page-about .ab-hero .af-crumbs__item a,
.page-about .ab-hero .af-crumbs__item span {
  color: rgba(251, 252, 253, 0.68);
}

.page-about .ab-hero .af-crumbs__item a:hover {
  color: var(--af-mist);
}

.page-about .ab-hero .af-kicker {
  color: var(--af-coral-600);
}

.page-about .ab-hero__title {
  margin: 0;
  max-width: 17ch;
  font-size: clamp(36px, 7.4vw, 86px);
  font-weight: 300;
  line-height: 1.03;
  letter-spacing: -0.02em;
  color: var(--af-mist);
}

.page-about .ab-hero__lede {
  margin: 0;
  max-width: 66ch;
  font-size: clamp(16px, 1.9vw, 18px);
  line-height: 1.78;
  color: rgba(251, 252, 253, 0.82);
}

.page-about .ab-vitals {
  list-style: none;
  margin: clamp(18px, 3.4vw, 34px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--ab-line-soft);
  border: 1px solid var(--ab-line-soft);
  border-radius: 18px;
  overflow: hidden;
}

.page-about .ab-vitals > li {
  background: rgba(7, 40, 74, 0.72);
  padding: 18px 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

.page-about .ab-vitals__value {
  font-family: var(--af-mono);
  font-weight: 600;
  font-size: clamp(20px, 3vw, 28px);
  letter-spacing: -0.02em;
  color: var(--af-mist);
  line-height: 1.1;
}

.page-about .ab-vitals__label {
  font-size: 13px;
  color: rgba(251, 252, 253, 0.62);
}

/* ---------- 两列骨架 ---------- */
.page-about .ab-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 5vw, 56px);
  padding: clamp(40px, 6vw, 84px) 0 clamp(48px, 7vw, 104px);
}

.page-about .ab-index {
  border-top: 2px solid var(--af-blue-700);
  padding-top: 12px;
}

.page-about .ab-index__title {
  margin: 0 0 10px;
  color: var(--af-stone-600);
}

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

.page-about .ab-index__link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 7px 14px;
  border: 1px solid var(--ab-line);
  border-radius: 999px;
  white-space: nowrap;
  font-size: 13px;
  color: var(--af-stone-600);
  text-decoration: none;
  transition: color 0.25s var(--af-ease), border-color 0.25s var(--af-ease), background-color 0.25s var(--af-ease);
}

.page-about .ab-index__link .af-num {
  font-size: 11px;
  color: var(--af-blue-500);
}

.page-about .ab-index__link:hover,
.page-about .ab-index__link:focus-visible {
  color: var(--af-blue-900);
  border-color: var(--af-coral-600);
  background: var(--af-coral-200);
}

.page-about .ab-index__link:focus-visible {
  outline: 2px solid var(--af-coral-600);
  outline-offset: 2px;
}

.page-about .ab-flow {
  display: flex;
  flex-direction: column;
  gap: clamp(54px, 8vw, 116px);
  min-width: 0;
}

/* ---------- 章节通用 ---------- */
.page-about .ab-sec {
  scroll-margin-top: calc(var(--af-header-h) + 28px);
  min-width: 0;
}

.page-about .ab-sec__head {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-top: clamp(18px, 2.6vw, 28px);
  border-top: 1px solid var(--ab-line);
  margin-bottom: clamp(22px, 3.6vw, 38px);
}

.page-about .ab-sec__head .af-kicker {
  color: var(--af-coral-600);
}

.page-about .ab-sec__head .af-title {
  margin: 0;
  color: var(--af-blue-900);
  font-size: clamp(24px, 3.4vw, 38px);
  line-height: 1.18;
  letter-spacing: -0.01em;
}

.page-about .ab-sec__lede {
  max-width: 68ch;
  margin: 0 0 clamp(20px, 3vw, 32px);
  font-size: 17px;
  line-height: 1.78;
}

.page-about .ab-sec__lede a,
.page-about .ab-body a {
  color: var(--af-blue-500);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-about .ab-sec__lede a:hover,
.page-about .ab-body a:hover {
  color: var(--af-coral-600);
}

/* ---------- 时间轴 ---------- */
.page-about .ab-timeline {
  list-style: none;
  margin: 0;
  padding: 0 0 0 30px;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: clamp(30px, 4.4vw, 48px);
}

.page-about .ab-timeline::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--af-coral-600), var(--af-blue-500) 46%, var(--af-mint-500));
}

.page-about .ab-stage {
  position: relative;
  min-width: 0;
}

.page-about .ab-stage::before {
  content: "";
  position: absolute;
  left: -30px;
  top: 6px;
  width: 18px;
  height: 18px;
  box-sizing: border-box;
  border-radius: 50%;
  background: var(--af-mist);
  border: 3px solid var(--af-coral-600);
}

.page-about .ab-stage__rail {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}

.page-about .ab-stage__no {
  font-family: var(--af-mono);
  font-weight: 600;
  font-size: 12px;
  letter-spacing: -0.02em;
  color: var(--af-blue-900);
  background: var(--af-coral-200);
  border-radius: 999px;
  padding: 3px 10px;
}

.page-about .ab-stage__era {
  color: var(--af-stone-600);
}

.page-about .ab-stage__title {
  margin: 0 0 10px;
  font-size: clamp(18px, 2.5vw, 23px);
  font-weight: 700;
  line-height: 1.35;
  color: var(--af-blue-900);
}

.page-about .ab-stage .af-body {
  margin: 0;
  max-width: 66ch;
  font-size: 16px;
  line-height: 1.78;
}

.page-about .ab-timeline__media {
  margin: clamp(30px, 4.6vw, 52px) 0 0;
}

/* ---------- 团队岗位 ---------- */
.page-about .ab-crew {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.page-about .ab-role {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 22px 20px 24px;
  border: 1px solid var(--ab-line);
  border-radius: var(--af-radius);
  background: var(--af-mist);
  transition: transform 0.32s var(--af-ease), border-color 0.32s var(--af-ease), box-shadow 0.32s var(--af-ease);
}

.page-about .ab-role::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  border-radius: 0 0 var(--af-radius) var(--af-radius);
  background: linear-gradient(90deg, var(--af-coral-600), var(--af-gold-500));
  opacity: 0;
  transition: opacity 0.32s var(--af-ease);
}

.page-about .ab-role:hover,
.page-about .ab-role:focus-within {
  transform: translateY(-4px);
  border-color: rgba(244, 98, 58, 0.5);
  box-shadow: 0 22px 44px -32px rgba(7, 40, 74, 0.55);
}

.page-about .ab-role:hover::after,
.page-about .ab-role:focus-within::after {
  opacity: 1;
}

.page-about .ab-role__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: var(--af-blue-100);
  color: var(--af-blue-700);
}

.page-about .ab-role__icon svg {
  width: 22px;
  height: 22px;
}

.page-about .ab-role__name {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
  color: var(--af-blue-900);
}

.page-about .ab-role__meta {
  margin: 0;
  font-family: var(--af-mono);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: -0.02em;
  color: var(--af-mint-500);
}

.page-about .ab-role .af-body {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--af-ink-800);
}

/* ---------- 认证阶梯 ---------- */
.page-about .ab-certify__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 48px);
  align-items: start;
}

.page-about .ab-ladder {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.page-about .ab-ladder__item {
  padding-bottom: 16px;
  border-bottom: 1px dashed var(--ab-line);
}

.page-about .ab-ladder__item:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .ab-ladder__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 6px;
}

.page-about .ab-ladder__idx {
  font-family: var(--af-mono);
  font-weight: 600;
  font-size: 13px;
  color: var(--af-mist);
  background: var(--af-blue-700);
  border-radius: 6px;
  padding: 2px 8px;
}

.page-about .ab-ladder__name {
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  color: var(--af-blue-900);
}

.page-about .ab-ladder__item .af-body {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.72;
  color: var(--af-ink-800);
}

.page-about .ab-ladder__meter {
  display: block;
}

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

/* ---------- 质量与复购 ---------- */
.page-about .ab-metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1px;
  background: var(--ab-line);
  border: 1px solid var(--ab-line);
  border-radius: var(--af-radius);
  overflow: hidden;
}

.page-about .ab-metric {
  background: var(--af-blue-100);
  padding: 22px 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
}

.page-about .ab-metric__value {
  font-family: var(--af-mono);
  font-weight: 600;
  font-size: clamp(26px, 3.8vw, 38px);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--af-coral-600);
}

.page-about .ab-metric__label {
  font-size: 14px;
  line-height: 1.6;
  color: var(--af-ink-800);
}

.page-about .ab-points {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
  margin-top: clamp(24px, 3.6vw, 36px);
}

.page-about .ab-point__title {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
  color: var(--af-blue-900);
  padding-left: 14px;
  position: relative;
}

.page-about .ab-point__title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.42em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--af-coral-600);
}

.page-about .ab-point .af-body {
  margin: 0;
  font-size: 15px;
  line-height: 1.76;
  color: var(--af-ink-800);
}

.page-about .ab-leadtime {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 16px;
  margin-top: clamp(24px, 3.6vw, 36px);
  padding: 22px;
  border-radius: var(--af-radius);
  background: var(--af-blue-900);
}

.page-about .ab-leadtime__item {
  min-width: 0;
}

.page-about .ab-leadtime__value {
  display: block;
  font-family: var(--af-mono);
  font-weight: 600;
  font-size: clamp(19px, 2.6vw, 25px);
  letter-spacing: -0.02em;
  color: var(--af-mist);
  line-height: 1.2;
}

.page-about .ab-leadtime__item p {
  margin: 6px 0 0;
  font-size: 13px;
  color: rgba(251, 252, 253, 0.62);
}

/* ---------- 调度与配件 ---------- */
.page-about .ab-dispatch {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 44px);
  align-items: start;
}

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

.page-about .ab-dispatch__body {
  min-width: 0;
}

.page-about .ab-dispatch__body .af-body {
  margin: 0 0 18px;
  font-size: 16px;
  line-height: 1.78;
}

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

.page-about .ab-dispatch__list li {
  font-size: 15px;
  line-height: 1.74;
  color: var(--af-ink-800);
}

/* ---------- 生态与合作 ---------- */
.page-about .ab-partners {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--ab-line);
}

.page-about .ab-partner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 8px;
  padding: clamp(20px, 3vw, 28px) 0;
  border-bottom: 1px solid var(--ab-line);
}

.page-about .ab-partner__name {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
  color: var(--af-blue-900);
  position: relative;
  padding-left: 18px;
}

.page-about .ab-partner__name::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.5em;
  width: 10px;
  height: 2px;
  background: var(--af-gold-500);
}

.page-about .ab-partner .af-body {
  margin: 0;
  font-size: 15px;
  line-height: 1.76;
  max-width: 62ch;
}

/* ---------- 收尾 ---------- */
.page-about .ab-cta {
  position: relative;
  overflow: hidden;
  background: var(--af-blue-900);
  color: var(--af-mist);
  padding: clamp(46px, 7vw, 92px) 0;
}

.page-about .ab-cta::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(100deg, transparent 0 60%, rgba(244, 98, 58, 0.2) 60% 100%);
}

.page-about .ab-cta__inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 3.6vw, 40px);
  align-items: end;
}

.page-about .ab-cta__title {
  margin: 0 0 10px;
  font-size: clamp(24px, 3.6vw, 40px);
  font-weight: 300;
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--af-mist);
}

.page-about .ab-cta__text {
  margin: 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.76;
  color: rgba(251, 252, 253, 0.8);
}

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

/* ---------- 图片兜底 ---------- */
.page-about .af-media__img {
  display: block;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

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

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

  .page-about .ab-points {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 26px 32px;
  }

  .page-about .ab-partner {
    grid-template-columns: minmax(180px, 220px) minmax(0, 1fr);
    gap: 28px;
    align-items: baseline;
  }
}

@media (min-width: 900px) {
  .page-about .ab-certify__grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    gap: clamp(32px, 4.4vw, 60px);
  }

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

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

  .page-about .ab-cta__inner {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
  }

  .page-about .ab-cta__actions {
    justify-content: flex-end;
  }
}

@media (min-width: 1024px) {
  .page-about .ab-layout {
    grid-template-columns: 208px minmax(0, 1fr);
    gap: clamp(44px, 5vw, 80px);
    align-items: start;
  }

  .page-about .ab-index {
    position: sticky;
    top: calc(var(--af-header-h) + 28px);
    align-self: start;
    padding-top: 14px;
  }

  .page-about .ab-index__list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-about .ab-index__link {
    border: 0;
    border-bottom: 2px solid transparent;
    border-radius: 0;
    padding: 8px 0;
    font-size: 14px;
    white-space: normal;
  }

  .page-about .ab-index__link:hover,
  .page-about .ab-index__link:focus-visible {
    background: transparent;
    border-bottom-color: var(--af-coral-600);
  }

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

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

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