.page-about {
  --ab-rail: 208px;
  --ab-cyan-line: rgba(44, 242, 210, 0.55);
  --ab-warm-soft: rgba(247, 243, 232, 0.82);
  background: var(--sq-warm);
  color: var(--sq-space);
  font-family: var(--sq-font-body);
  font-size: 17px;
  line-height: 1.75;
  overflow-x: hidden;
}

.page-about h1,
.page-about h2,
.page-about h3,
.page-about h4 {
  margin: 0;
  font-family: var(--sq-font-display);
  font-weight: 800;
  letter-spacing: -0.01em;
}

.page-about p {
  margin: 0 0 16px;
}

.page-about a {
  color: inherit;
}

/* ---------- 面包屑与英雄区 ---------- */
.page-about .sq-crumbs {
  padding-top: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  font-family: var(--sq-font-mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--sq-lamp);
}

.page-about .sq-crumbs__sep {
  color: var(--sq-stand);
}

.page-about .sq-crumbs__link {
  text-decoration: none;
  border-bottom: 1px solid var(--ab-cyan-line);
}

.page-about .ab-hero {
  padding: clamp(26px, 5vw, 48px) 0 clamp(40px, 6vw, 64px);
}

.page-about .ab-hero__grid {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  align-items: start;
}

.page-about .ab-rail {
  display: none;
}

.page-about .ab-rail__title {
  margin: 0 0 14px;
  font-family: var(--sq-font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--sq-lamp);
}

.page-about .ab-rail__list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-left: 1px solid var(--sq-hair);
}

.page-about .ab-rail__list li {
  margin: 0;
}

.page-about .ab-rail__list a {
  display: flex;
  gap: 10px;
  padding: 8px 0 8px 14px;
  text-decoration: none;
  font-size: 14.5px;
  color: rgba(7, 26, 43, 0.76);
  border-left: 2px solid transparent;
  margin-left: -1px;
  transition: color 0.2s var(--sq-ease), border-color 0.2s var(--sq-ease);
}

.page-about .ab-rail__list a span {
  font-family: var(--sq-font-mono);
  font-size: 11.5px;
  color: var(--sq-stand);
}

.page-about .ab-rail__list a:hover,
.page-about .ab-rail__list a:focus-visible {
  color: var(--sq-lamp);
  border-left-color: var(--sq-cyan);
}

.page-about .ab-rail__note {
  margin: 18px 0 0;
  font-family: var(--sq-font-mono);
  font-size: 11.5px;
  letter-spacing: 0.04em;
  color: var(--sq-stand);
}

.page-about .ab-kicker {
  color: var(--sq-lamp);
  margin-bottom: 14px;
}

.page-about .ab-hero__main h1 {
  font-size: clamp(44px, 11vw, 92px);
  line-height: 0.95;
  letter-spacing: -0.02em;
  margin-bottom: 22px;
}

.page-about .ab-lede {
  max-width: 46ch;
  font-size: clamp(18px, 2.4vw, 21px);
  line-height: 1.62;
  color: var(--sq-lamp);
}

.page-about .ab-lede-more {
  max-width: 56ch;
  font-size: 16.5px;
  color: rgba(7, 26, 43, 0.78);
}

.page-about .ab-slash {
  width: 132px;
  height: 9px;
  margin-top: 22px;
  background: linear-gradient(90deg, var(--sq-orange) 0%, var(--sq-orange) 62%, var(--sq-cyan) 62%, var(--sq-cyan) 100%);
  transform: skewX(-26deg);
}

/* ---------- 数据带 ---------- */
.page-about .ab-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  margin-top: clamp(30px, 5vw, 48px);
  background: var(--sq-lamp);
  color: var(--sq-warm);
  border-radius: 3px;
  overflow: hidden;
}

.page-about .ab-stat {
  padding: 18px 16px 20px;
  border-bottom: 1px solid rgba(247, 243, 232, 0.16);
}

.page-about .ab-stat:nth-child(odd) {
  border-right: 1px solid rgba(247, 243, 232, 0.16);
}

.page-about .ab-stat:nth-last-child(-n + 2) {
  border-bottom: 0;
}

.page-about .ab-stat__num {
  display: block;
  font-family: var(--sq-font-display);
  font-size: clamp(30px, 7vw, 44px);
  line-height: 1.05;
  color: var(--sq-cyan);
  letter-spacing: -0.01em;
}

.page-about .ab-stat__label {
  display: block;
  margin-top: 6px;
  font-family: var(--sq-font-mono);
  font-size: 11.5px;
  letter-spacing: 0.05em;
  color: rgba(247, 243, 232, 0.8);
}

/* ---------- 通用章节 ---------- */
.page-about .ab-sec {
  padding: clamp(52px, 8vw, 92px) 0;
  scroll-margin-top: 96px;
}

.page-about .ab-head {
  max-width: 62ch;
  margin-bottom: clamp(26px, 4vw, 40px);
}

.page-about .ab-head h2 {
  font-size: clamp(29px, 5.4vw, 44px);
  line-height: 1.12;
  margin: 10px 0 14px;
}

.page-about .ab-head__sub {
  font-size: 16.5px;
  color: rgba(7, 26, 43, 0.75);
  margin: 0;
}

.page-about .ab-head--dark h2 {
  color: var(--sq-warm);
}

.page-about .ab-head--dark .ab-head__sub {
  color: var(--ab-warm-soft);
}

.page-about .ab-head--dark .sq-eyebrow {
  color: var(--sq-cyan);
}

/* ---------- 两条主线 ---------- */
.page-about .ab-positioning {
  background: var(--sq-warm);
}

.page-about .ab-lane {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
  padding: clamp(20px, 3vw, 30px);
  border-radius: 3px;
}

.page-about .ab-lane + .ab-lane {
  margin-top: 18px;
}

.page-about .ab-lane--solo {
  background: var(--sq-mint);
  border-left: 4px solid var(--sq-orange);
}

.page-about .ab-lane--family {
  background: var(--sq-space);
  color: var(--sq-warm);
  border-left: 4px solid var(--sq-cyan);
}

.page-about .ab-lane h3 {
  font-size: clamp(22px, 3.6vw, 30px);
  line-height: 1.2;
  margin-bottom: 12px;
}

.page-about .ab-lane--solo h3 {
  color: var(--sq-lamp);
}

.page-about .ab-lane--family h3 {
  color: var(--sq-yellow);
}

.page-about .ab-lane p {
  font-size: 16.5px;
}

.page-about .ab-lane--family p {
  color: var(--ab-warm-soft);
}

.page-about .ab-lane__text p:last-of-type {
  margin-bottom: 6px;
}

.page-about .ab-inline-link {
  margin-top: 10px;
}

.page-about .ab-lane--family .sq-btn--ghost {
  color: var(--sq-warm);
  border-color: rgba(247, 243, 232, 0.45);
}

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

.page-about .ab-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  border-radius: 3px;
  object-fit: cover;
  aspect-ratio: 3 / 2;
}

.page-about .ab-figure figcaption {
  margin-top: 10px;
  font-size: 13px;
  font-family: var(--sq-font-mono);
  letter-spacing: 0.02em;
  color: var(--sq-stand);
}

/* ---------- 时间轴 ---------- */
.page-about .ab-timeline {
  position: relative;
  background: var(--sq-space);
  color: var(--sq-warm);
  overflow: hidden;
}

.page-about .ab-timeline__bg {
  position: absolute;
  inset: 0;
  opacity: 0.2;
  pointer-events: none;
}

.page-about .ab-timeline__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.page-about .ab-timeline__inner {
  position: relative;
  z-index: 1;
}

.page-about .ab-track {
  display: grid;
  gap: 14px;
}

.page-about .ab-track .sq-accordion__item {
  border-top: 2px solid rgba(44, 242, 210, 0.35);
  padding-top: 10px;
}

.page-about .ab-track .sq-accordion__trigger {
  display: flex;
  flex-direction: column;
  gap: 6px;
  width: 100%;
  padding: 8px 0 10px;
  background: none;
  border: 0;
  text-align: left;
  cursor: pointer;
  color: inherit;
  font-family: inherit;
}

.page-about .ab-track .ab-year {
  font-family: var(--sq-font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--sq-cyan);
}

.page-about .ab-track .ab-node-title {
  font-family: var(--sq-font-display);
  font-size: clamp(21px, 3vw, 27px);
  font-weight: 800;
  line-height: 1.18;
  color: var(--sq-warm);
  transition: color 0.2s var(--sq-ease);
}

.page-about .ab-track .sq-accordion__trigger[aria-expanded="true"] .ab-node-title {
  color: var(--sq-yellow);
}

.page-about .ab-track .sq-accordion__panel {
  color: var(--ab-warm-soft);
  font-size: 15.5px;
}

.page-about .ab-track .sq-accordion__inner p {
  margin: 0 0 8px;
}

.page-about .ab-timeline__foot {
  margin: clamp(26px, 4vw, 38px) 0 0;
}

/* ---------- 团队 ---------- */
.page-about .ab-team {
  background: var(--sq-warm);
}

.page-about .ab-team__grid {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  align-items: start;
}

.page-about .ab-team__text h2 {
  font-size: clamp(29px, 5.4vw, 42px);
  line-height: 1.12;
  margin: 10px 0 16px;
}

.page-about .ab-team__text p {
  max-width: 56ch;
  font-size: 16.5px;
}

.page-about .ab-team__list {
  margin: 20px 0 14px;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--sq-hair);
}

.page-about .ab-team__list li {
  padding: 11px 0;
  border-bottom: 1px solid var(--sq-hair);
  font-size: 15.5px;
  color: rgba(7, 26, 43, 0.82);
}

.page-about .ab-team__list strong {
  font-family: var(--sq-font-display);
  font-size: 19px;
  color: var(--sq-lamp);
  margin-right: 6px;
}

.page-about .ab-team__link {
  margin: 6px 0 0;
}

.page-about .ab-team__link a {
  color: var(--sq-lamp);
  text-decoration: none;
  border-bottom: 1px solid var(--ab-cyan-line);
  padding-bottom: 2px;
}

/* ---------- 覆盖与伙伴 ---------- */
.page-about .ab-scale {
  background: var(--sq-mint);
}

.page-about .ab-scale__band {
  display: grid;
  gap: 16px;
  margin-bottom: clamp(32px, 5vw, 52px);
}

.page-about .ab-scale__cell {
  padding: 22px 20px;
  background: var(--sq-warm);
  border-left: 4px solid var(--sq-grass);
}

.page-about .ab-scale__cell:nth-child(2) {
  border-left-color: var(--sq-orange);
}

.page-about .ab-scale__cell:nth-child(3) {
  border-left-color: var(--sq-cyan);
}

.page-about .ab-scale__num {
  display: block;
  font-family: var(--sq-font-display);
  font-size: clamp(34px, 7vw, 48px);
  line-height: 1;
  color: var(--sq-lamp);
  letter-spacing: -0.01em;
}

.page-about .ab-scale__cell p {
  margin: 10px 0 0;
  font-size: 15px;
  color: rgba(7, 26, 43, 0.78);
}

.page-about .ab-sub-title {
  font-size: clamp(21px, 3.2vw, 27px);
  margin-bottom: 16px;
  color: var(--sq-space);
}

.page-about .ab-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 22px;
}

.page-about .ab-filter .sq-filter__btn {
  padding: 8px 15px;
  border-radius: 999px;
  border: 1px solid var(--sq-lamp);
  background: transparent;
  color: var(--sq-lamp);
  font-family: var(--sq-font-mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: background 0.2s var(--sq-ease), color 0.2s var(--sq-ease);
}

.page-about .ab-filter .sq-filter__btn[aria-pressed="true"] {
  background: var(--sq-lamp);
  color: var(--sq-warm);
  border-color: var(--sq-lamp);
}

.page-about .ab-eco {
  display: grid;
  gap: 14px;
}

.page-about .ab-eco__item {
  padding: 16px 0 16px 16px;
  border-left: 3px solid rgba(11, 91, 58, 0.3);
}

.page-about .ab-eco__item h4 {
  font-size: 19px;
  line-height: 1.3;
  color: var(--sq-lamp);
  margin-bottom: 6px;
}

.page-about .ab-eco__item p {
  margin: 0;
  font-size: 15.5px;
  color: rgba(7, 26, 43, 0.78);
}

/* ---------- 服务准则 ---------- */
.page-about .ab-trust {
  background: var(--sq-warm);
}

.page-about .ab-trust__grid {
  display: grid;
  gap: clamp(26px, 4vw, 40px);
}

.page-about .ab-head--tight {
  margin-bottom: 0;
}

.page-about .ab-flow {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 20px;
}

.page-about .ab-flow li {
  display: grid;
  grid-template-columns: 54px 1fr;
  gap: 14px;
  align-items: start;
  padding-top: 16px;
  border-top: 1px solid var(--sq-hair);
}

.page-about .ab-flow__num {
  font-family: var(--sq-font-display);
  font-size: 30px;
  line-height: 1;
  color: var(--sq-orange);
}

.page-about .ab-flow h3 {
  font-size: 21px;
  line-height: 1.25;
  margin-bottom: 6px;
  color: var(--sq-lamp);
}

.page-about .ab-flow p {
  margin: 0;
  font-size: 15.5px;
  color: rgba(7, 26, 43, 0.78);
}

.page-about .ab-honor {
  padding: 22px 20px;
  background: var(--sq-lamp);
  color: var(--sq-warm);
  border-radius: 3px;
}

.page-about .ab-honor__label {
  margin: 0 0 8px;
  font-family: var(--sq-font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--sq-yellow);
}

.page-about .ab-honor__text {
  margin: 0;
  font-size: 15.5px;
  color: var(--ab-warm-soft);
}

/* ---------- 结尾行动 ---------- */
.page-about .ab-cta {
  background: var(--sq-lamp);
  color: var(--sq-warm);
  padding: clamp(44px, 7vw, 76px) 0;
}

.page-about .ab-cta__inner {
  display: grid;
  gap: 24px;
  align-items: center;
}

.page-about .ab-cta h2 {
  font-size: clamp(27px, 5vw, 40px);
  line-height: 1.14;
  margin-bottom: 12px;
  color: var(--sq-warm);
}

.page-about .ab-cta p {
  margin: 0;
  font-size: 16.5px;
  color: var(--ab-warm-soft);
  max-width: 48ch;
}

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

.page-about .ab-cta .sq-btn--ghost {
  color: var(--sq-warm);
  border-color: rgba(247, 243, 232, 0.5);
}

/* ---------- 入场 ---------- */
.page-about [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.45s var(--sq-ease), transform 0.45s var(--sq-ease);
}

.page-about [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .page-about [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ---------- 桌面布局 ---------- */
@media (min-width: 900px) {
  .page-about .ab-hero__grid {
    grid-template-columns: var(--ab-rail) minmax(0, 1fr);
    gap: clamp(32px, 4vw, 64px);
  }

  .page-about .ab-rail {
    display: block;
    position: sticky;
    top: 104px;
  }

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

  .page-about .ab-stat {
    border-bottom: 0;
    border-right: 1px solid rgba(247, 243, 232, 0.16);
    padding: 24px 22px 26px;
  }

  .page-about .ab-stat:nth-child(odd) {
    border-right: 1px solid rgba(247, 243, 232, 0.16);
  }

  .page-about .ab-stat:last-child {
    border-right: 0;
  }

  .page-about .ab-lane--family {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    align-items: center;
    gap: clamp(24px, 3vw, 40px);
  }

  .page-about .ab-track {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: clamp(16px, 2.2vw, 30px);
  }

  .page-about .ab-team__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: clamp(32px, 4vw, 56px);
  }

  .page-about .ab-scale__band {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }

  .page-about .ab-eco {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px 26px;
  }

  .page-about .ab-trust__grid {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    align-items: start;
    column-gap: clamp(32px, 4vw, 56px);
  }

  .page-about .ab-honor {
    grid-column: 1;
    grid-row: 2;
  }

  .page-about .ab-flow {
    grid-column: 2;
    grid-row: 1 / span 2;
  }

  .page-about .ab-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 32px;
  }
}

@media (min-width: 1200px) {
  .page-about .ab-hero__main h1 {
    font-size: 92px;
  }
}
<<<PAGE_CSS_END>>>
<<<END>>>