.page-about {
  --ab-ink-soft: #3d4652;
  background: var(--deep);
  color: var(--paper);
  font-family: var(--font-body);
  overflow-x: clip;
}

.page-about [id] {
  scroll-margin-top: calc(var(--bar-h) + 24px);
}

.page-about .ab-crumb-wrap {
  padding-top: clamp(20px, 4vw, 36px);
}

.page-about .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--mist);
}

.page-about .breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  margin: 0 0.6em;
  color: var(--line-strong);
}

.page-about .breadcrumb__link {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-about .breadcrumb__link:hover,
.page-about .breadcrumb__link:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

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

/* ---------- 首屏 ---------- */

.page-about .ab-hero {
  padding: clamp(24px, 4vw, 52px) 0 clamp(52px, 8vw, 104px);
}

.page-about .ab-hero__grid {
  display: grid;
  gap: clamp(30px, 5vw, 56px);
  align-items: end;
}

.page-about .ab-hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--cyan);
}

.page-about .ab-hero__eyebrow::before {
  content: "";
  width: 34px;
  height: 1px;
  background: var(--coral);
}

.page-about .ab-hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1.08;
  font-size: clamp(33px, 7.4vw, 76px);
  color: var(--paper);
}

.page-about .ab-hero__lede {
  margin: clamp(18px, 3vw, 28px) 0 0;
  max-width: 48ch;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.85;
  color: var(--mist);
}

/* ---------- 图片 ---------- */

.page-about .ab-figure {
  margin: 0;
  position: relative;
}

.page-about .ab-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border: 1px solid var(--line-strong);
  background: var(--navy);
}

.page-about .ab-figure--layered::after {
  content: "";
  position: absolute;
  inset: 0;
  border: 1px solid var(--line-strong);
  transform: translate(10px, 10px);
  pointer-events: none;
}

.page-about .ab-figure__cap {
  position: relative;
  margin: 14px 0 0;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--mist);
}

/* ---------- 通用章节 ---------- */

.page-about .ab-section {
  position: relative;
  padding: clamp(56px, 9vw, 120px) 0;
}

.page-about .ab-section--paper {
  background: var(--paper);
  color: var(--ink);
}

.page-about .ab-kicker {
  display: block;
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--coral);
}

.page-about .ab-kicker--ink {
  color: var(--wine);
}

.page-about .ab-h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.16;
  font-size: clamp(26px, 4.6vw, 50px);
}

.page-about .ab-lead {
  margin: 18px 0 0;
  max-width: 58ch;
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.85;
  color: var(--mist);
}

.page-about .ab-section--paper .ab-lead {
  color: var(--ab-ink-soft);
}

.page-about .ab-body {
  max-width: 62ch;
}

.page-about .ab-body p {
  margin: 0 0 1.1em;
  font-size: 16px;
  line-height: 1.85;
  color: var(--mist);
}

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

.page-about .ab-link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(61, 245, 230, 0.4);
  transition: border-color 0.2s var(--ease);
}

.page-about .ab-link:hover,
.page-about .ab-link:focus-visible {
  border-bottom-color: var(--cyan);
}

/* ---------- 起点 ---------- */

.page-about .ab-origin__grid {
  display: grid;
  gap: clamp(24px, 4vw, 40px);
  margin-top: clamp(24px, 4vw, 40px);
}

.page-about .ab-note {
  border-left: 2px solid var(--coral);
  padding: 2px 0 2px 16px;
  max-width: 40ch;
  transition: border-color 0.25s var(--ease), color 0.25s var(--ease);
}

.page-about .ab-note p {
  margin: 0;
  font-size: 13px;
  line-height: 1.85;
  color: var(--mist);
  transition: color 0.25s var(--ease);
}

.page-about .ab-note:hover,
.page-about .ab-note:focus-within {
  border-left-color: var(--cyan);
}

.page-about .ab-note:hover p,
.page-about .ab-note:focus-within p {
  color: var(--paper);
}

.page-about .ab-pull {
  margin: clamp(32px, 5vw, 64px) 0 0;
  max-width: 22ch;
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.22;
  font-size: clamp(24px, 4.8vw, 54px);
  color: var(--paper);
}

/* ---------- 编辑台 ---------- */

.page-about .ab-desk {
  background:
    linear-gradient(180deg, rgba(14, 77, 100, 0.55) 0%, rgba(12, 44, 74, 0.15) 55%, transparent 100%),
    var(--deep);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-about .ab-desk__head {
  max-width: 64ch;
}

.page-about .ab-desk__grid {
  display: grid;
  gap: clamp(28px, 4vw, 56px);
  margin-top: clamp(30px, 5vw, 56px);
}

.page-about .ab-roles {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
}

.page-about .ab-role {
  position: relative;
  padding: 20px 0 20px 34px;
  border-top: 1px solid var(--line);
}

.page-about .ab-role:last-child {
  border-bottom: 1px solid var(--line);
}

.page-about .ab-role__idx {
  position: absolute;
  left: 0;
  top: 21px;
  font-family: var(--font-cond);
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--coral);
}

.page-about .ab-role__title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: clamp(17px, 2vw, 20px);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-about .ab-role p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mist);
}

.page-about .ab-desk__foot {
  margin: clamp(28px, 4vw, 44px) 0 0;
  padding-left: 16px;
  border-left: 1px solid var(--line-strong);
  max-width: 60ch;
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--mist);
}

/* ---------- 时间轴 ---------- */

.page-about .ab-timeline__grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  margin-top: clamp(26px, 4vw, 48px);
}

.page-about .ab-years {
  display: flex;
  align-items: center;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 10px;
  scrollbar-width: thin;
}

.page-about .ab-years__label {
  flex: 0 0 auto;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--mist);
}

.page-about .ab-years__link {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.08em;
  text-decoration: none;
  color: var(--ink);
  padding: 7px 13px;
  border: 1px solid var(--ink-line);
  background: transparent;
  transition: background 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-about .ab-years__link:hover,
.page-about .ab-years__link:focus-visible {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}

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

.page-about .ab-era {
  position: relative;
  padding: 0 0 clamp(26px, 4vw, 42px) 26px;
  border-left: 1px solid var(--ink-line);
}

.page-about .ab-era::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 5px;
  width: 9px;
  height: 9px;
  background: var(--coral);
  transform: rotate(45deg);
}

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

.page-about .ab-era__year {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.14em;
  color: var(--wine);
}

.page-about .ab-era__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: clamp(17px, 2.1vw, 21px);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-about .ab-era p {
  margin: 0;
  max-width: 54ch;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--ab-ink-soft);
}

.page-about .ab-timeline__figure {
  margin-top: clamp(30px, 5vw, 56px);
}

.page-about .ab-timeline__figure::after {
  border-color: var(--ink-line);
}

.page-about .ab-timeline__figure .ab-figure__cap {
  color: var(--ab-ink-soft);
}

/* ---------- 生态 ---------- */

.page-about .ab-partners {
  list-style: none;
  margin: clamp(30px, 5vw, 56px) 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-about .ab-partner {
  display: grid;
  gap: 8px;
  padding: 22px 0;
  border-top: 1px solid var(--line);
}

.page-about .ab-partner:last-child {
  border-bottom: 1px solid var(--line);
}

.page-about .ab-partner__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(16px, 1.8vw, 19px);
  font-weight: 700;
  color: var(--cyan);
}

.page-about .ab-partner p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mist);
}

.page-about .ab-eco__stat {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 16px;
  margin: clamp(28px, 4vw, 44px) 0 0;
  padding-top: 22px;
  border-top: 1px solid var(--line-strong);
}

.page-about .ab-eco__num {
  font-family: var(--font-mono);
  font-size: clamp(34px, 6vw, 58px);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
  color: var(--cyan);
  line-height: 1;
}

.page-about .ab-eco__txt {
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--mist);
}

/* ---------- 下一步 ---------- */

.page-about .ab-next {
  background: linear-gradient(180deg, rgba(43, 47, 107, 0.42) 0%, rgba(110, 30, 58, 0.22) 100%);
  border-top: 1px solid var(--line-strong);
}

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

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

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

.page-about .ab-next__item:last-child {
  border-bottom: 1px solid var(--line);
}

.page-about .ab-next__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 4px;
  font-size: clamp(15px, 1.8vw, 18px);
  font-weight: 500;
  color: var(--paper);
  text-decoration: none;
  transition: color 0.2s var(--ease), padding-left 0.2s var(--ease);
}

.page-about .ab-next__arrow {
  font-family: var(--font-mono);
  color: var(--coral);
  transition: transform 0.2s var(--ease);
}

.page-about .ab-next__link:hover,
.page-about .ab-next__link:focus-visible {
  color: var(--cyan);
  padding-left: 12px;
}

.page-about .ab-next__link:hover .ab-next__arrow,
.page-about .ab-next__link:focus-visible .ab-next__arrow {
  transform: translateX(4px);
}

/* ---------- 桌面布局 ---------- */

@media (min-width: 860px) {
  .page-about .ab-hero__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: end;
  }

  .page-about .ab-origin__grid {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.6fr);
    gap: clamp(40px, 7vw, 104px);
    align-items: start;
  }

  .page-about .ab-note {
    margin-top: 6px;
  }

  .page-about .ab-desk__grid {
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1fr);
    gap: clamp(36px, 5vw, 72px);
    align-items: start;
  }

  .page-about .ab-timeline__grid {
    grid-template-columns: minmax(0, 130px) minmax(0, 1fr);
    gap: clamp(32px, 5vw, 72px);
    align-items: start;
  }

  .page-about .ab-years {
    position: sticky;
    top: clamp(36px, 8vh, 88px);
    flex-direction: column;
    align-items: flex-start;
    overflow: visible;
    padding: 0 0 0 16px;
    border-left: 1px solid var(--ink-line);
    gap: 14px;
  }

  .page-about .ab-years__label {
    padding-bottom: 6px;
  }

  .page-about .ab-partner {
    grid-template-columns: minmax(0, 220px) minmax(0, 1fr);
    gap: clamp(20px, 3vw, 44px);
    align-items: baseline;
  }

  .page-about .ab-next__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.85fr);
    gap: clamp(40px, 6vw, 88px);
    align-items: start;
  }
}

@media (min-width: 1100px) {
  .page-about .ab-hero {
    padding-top: clamp(32px, 4vw, 64px);
  }

  .page-about .ab-pull {
    margin-left: clamp(0px, 6vw, 120px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .ab-figure--layered::after {
    transform: none;
  }

  .page-about .ab-next__link,
  .page-about .ab-next__arrow,
  .page-about .ab-note,
  .page-about .ab-note p,
  .page-about .breadcrumb__link {
    transition: none;
  }

  .page-about .ab-next__link:hover {
    padding-left: 4px;
  }

  .page-about .ab-next__link:hover .ab-next__arrow {
    transform: none;
  }
}
<<<PAGE_CSS_END>>>