.page-about {
  --about-line: rgba(199, 213, 224, 0.26);
  --about-line-strong: rgba(199, 213, 224, 0.45);
  color: var(--paper);
}

.page-about .breadcrumbs {
  padding: 18px 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
}

.page-about .breadcrumbs__item {
  color: var(--graphite);
}

.page-about .breadcrumbs__item + .breadcrumbs__item::before {
  content: "/";
  margin: 0 8px;
  color: var(--slate);
}

.page-about .breadcrumbs__item a {
  color: var(--mist);
  text-decoration: none;
}

.page-about .breadcrumbs__item a:hover {
  color: var(--cyan);
}

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

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  display: grid;
  gap: var(--gap);
  padding: 8px 0 clamp(28px, 4vw, 48px);
}

.page-about .about-hero__lead {
  background: var(--teal);
  border: 2px solid var(--about-line-strong);
  box-shadow: var(--shadow-hard);
  padding: clamp(22px, 4vw, 44px);
  min-width: 0;
}

.page-about .eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--cyan);
  margin: 0;
}

.page-about .about-hero__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 6.4vw, 62px);
  line-height: 1.04;
  letter-spacing: -0.01em;
  margin: 14px 0 0;
  color: var(--paper);
  text-wrap: balance;
}

.page-about .about-hero__lede {
  margin: 18px 0 0;
  max-width: 48ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--mist);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-about .about-hero__figures {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  min-width: 0;
}

.page-about .about-fig {
  background: var(--slate);
  border: 2px solid var(--about-line);
  padding: 16px 18px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  justify-content: center;
}

.page-about .about-fig__num {
  font-family: var(--font-mono);
  font-size: clamp(26px, 4vw, 36px);
  letter-spacing: 0.04em;
  color: var(--cyan);
  line-height: 1.1;
}

.page-about .about-fig--wide .about-fig__num {
  color: var(--amber);
}

.page-about .about-fig__label {
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--mist);
}

/* ---------- 章节索引 ---------- */
.page-about .about-index {
  display: flex;
  gap: 8px;
  max-width: 100%;
  overflow-x: auto;
  padding: 12px 0 16px;
  border-top: 2px solid var(--about-line);
  border-bottom: 2px solid var(--about-line);
  scrollbar-width: thin;
}

.page-about .about-index__link {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: 2px solid var(--about-line);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--mist);
  text-decoration: none;
  white-space: nowrap;
  transition: border-color 180ms var(--ease), color 180ms var(--ease);
}

.page-about .about-index__link span {
  color: var(--indigo);
  font-weight: 700;
}

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

.page-about .about-index__link:hover span,
.page-about .about-index__link:focus-visible span {
  color: var(--cyan);
}

/* ---------- 区块通用 ---------- */
.page-about .about-block {
  padding: clamp(40px, 6vw, 76px) 0;
  border-bottom: 2px solid var(--about-line);
  scroll-margin-top: 24px;
}

.page-about .about-block__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 22px;
  flex-wrap: wrap;
}

.page-about .about-no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--abyss);
  background: var(--cyan);
  padding: 4px 8px;
  line-height: 1.2;
}

.page-about .about-h2 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(22px, 3.6vw, 38px);
  line-height: 1.1;
  margin: 0;
  color: var(--paper);
}

.page-about .about-lead-p {
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--mist);
  max-width: 62ch;
  margin: 0 0 28px;
}

.page-about .about-note {
  margin: 24px 0 0;
  padding: 16px 18px;
  border-left: 4px solid var(--amber);
  background: rgba(28, 50, 66, 0.55);
  color: var(--mist);
  font-size: 15px;
  line-height: 1.8;
  max-width: 70ch;
}

.page-about .about-inline-link a,
.page-about .about-result__p a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(45, 226, 208, 0.5);
}

.page-about .about-inline-link a:hover,
.page-about .about-result__p a:hover {
  border-bottom-color: var(--cyan);
}

/* ---------- 01 横向卡片流 ---------- */
.page-about .about-flow {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-about .about-card {
  background: var(--slate);
  border: 2px solid var(--about-line);
  box-shadow: var(--shadow-hard-sm);
  padding: 20px;
  transition: transform 180ms var(--ease), box-shadow 180ms var(--ease);
}

.page-about .about-card:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-hard);
}

.page-about .about-card__title {
  font-size: 18px;
  font-weight: 700;
  margin: 0 0 10px;
  color: var(--paper);
}

.page-about .about-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 02 错位服务对象 ---------- */
.page-about .about-roles {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  align-items: start;
}

.page-about .about-role {
  position: relative;
  background: var(--teal);
  border: 2px solid var(--about-line-strong);
  box-shadow: var(--shadow-hard);
  padding: 26px 20px 22px;
  min-width: 0;
}

.page-about .about-role__no {
  position: absolute;
  top: -2px;
  right: -2px;
  background: var(--indigo);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  padding: 6px 10px;
}

.page-about .about-role__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(20px, 2.6vw, 26px);
  margin: 0 0 12px;
  color: var(--paper);
}

.page-about .about-role__p {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

.page-about .about-role__list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 2px solid var(--about-line);
  padding-top: 12px;
}

.page-about .about-role__list li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.9;
  color: var(--mist);
}

.page-about .about-role__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.9em;
  width: 6px;
  height: 6px;
  background: var(--amber);
}

/* ---------- 03 版本演进轴 ---------- */
.page-about .about-track {
  list-style: none;
  margin: 0 0 28px;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-about .about-track__node {
  position: relative;
  background: var(--slate);
  border: 2px solid var(--about-line);
  padding: 22px 18px 20px;
  min-width: 0;
}

.page-about .about-track__node::before {
  content: "";
  position: absolute;
  left: -2px;
  right: -2px;
  top: -2px;
  height: 6px;
  background: var(--indigo);
}

.page-about .about-track__node:last-child::before {
  background: var(--cyan);
}

.page-about .about-track__ver {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(28px, 4vw, 44px);
  letter-spacing: 0.06em;
  line-height: 1.1;
  color: var(--paper);
  margin-bottom: 12px;
}

.page-about .about-track__node:last-child .about-track__ver {
  color: var(--cyan);
}

.page-about .tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  padding: 4px 8px;
  color: var(--paper);
}

.page-about .tag--indigo {
  background: var(--indigo);
}

.page-about .tag--wine {
  background: var(--wine);
}

.page-about .tag--amber {
  background: var(--amber);
  color: var(--abyss);
}

.page-about .about-track__title {
  font-size: 17px;
  font-weight: 700;
  margin: 14px 0 8px;
  color: var(--paper);
}

.page-about .about-track__p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 图片 ---------- */
.page-about .about-media {
  margin: 0;
  border: 2px solid var(--about-line-strong);
  background: var(--abyss);
}

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

.page-about .about-media__cap {
  padding: 10px 14px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
  border-top: 2px solid var(--about-line);
}

.page-about .about-media--team {
  margin-bottom: 24px;
}

/* ---------- 04 团队 ---------- */
.page-about .about-team {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.page-about .about-team__chart {
  background: var(--slate);
  border: 2px solid var(--about-line);
  padding: 20px;
}

.page-about .about-team__bar {
  display: flex;
  height: 24px;
  border: 2px solid var(--about-line-strong);
  background: var(--abyss);
}

.page-about .about-bar {
  display: block;
  height: 100%;
}

.page-about .about-bar--editor {
  flex: 12 1 0;
  background: var(--indigo);
}

.page-about .about-bar--tech {
  flex: 9 1 0;
  background: var(--cyan);
}

.page-about .about-bar--service {
  flex: 7 1 0;
  background: var(--amber);
}

.page-about .about-team__legend {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
}

.page-about .about-team__legend li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  line-height: 1.9;
  color: var(--mist);
}

.page-about .dot {
  flex: 0 0 auto;
  width: 10px;
  height: 10px;
  margin-top: 0.62em;
}

.page-about .dot--editor {
  background: var(--indigo);
}

.page-about .dot--tech {
  background: var(--cyan);
}

.page-about .dot--service {
  background: var(--amber);
}

.page-about .about-team__text p {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
  max-width: 62ch;
}

/* ---------- 05 数据卡 ---------- */
.page-about .about-stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-about .about-stat {
  background: var(--paper);
  color: var(--ink);
  border: 2px solid var(--abyss);
  box-shadow: var(--shadow-hard-sm);
  padding: 20px;
  transition: transform 180ms var(--ease), box-shadow 180ms var(--ease);
}

.page-about .about-stat:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-hard);
}

.page-about .about-stat__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(26px, 3.4vw, 34px);
  letter-spacing: 0.03em;
  line-height: 1.1;
  color: var(--ink);
}

.page-about .about-stat__label {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--wine);
  font-weight: 700;
}

.page-about .about-stat__note {
  margin: 12px 0 0;
  padding-top: 12px;
  border-top: 2px solid rgba(11, 26, 38, 0.14);
  font-size: 14px;
  line-height: 1.75;
  color: #3b4c5b;
}

/* ---------- 06 合作生态 ---------- */
.page-about .about-eco {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  align-items: start;
}

.page-about .about-eco__text p {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
  max-width: 62ch;
}

.page-about .about-eco__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 2px solid var(--about-line);
}

.page-about .about-eco__list li {
  position: relative;
  padding: 10px 0 10px 18px;
  border-bottom: 2px solid var(--about-line);
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

.page-about .about-eco__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 1.1em;
  width: 8px;
  height: 2px;
  background: var(--cyan);
}

/* ---------- 07 结果 ---------- */
.page-about .about-results {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-bottom: 32px;
}

.page-about .about-result {
  background: var(--teal);
  border: 2px solid var(--about-line-strong);
  padding: 20px;
}

.page-about .about-result__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(24px, 3.2vw, 32px);
  letter-spacing: 0.04em;
  color: var(--amber);
  line-height: 1.15;
  margin-bottom: 10px;
}

.page-about .about-result__p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

.page-about .about-cta {
  display: grid;
  gap: 18px;
  padding: clamp(22px, 3.5vw, 34px);
  background: var(--abyss);
  border: 2px solid var(--cyan);
  box-shadow: var(--shadow-hard);
}

.page-about .about-cta__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(20px, 2.8vw, 28px);
  line-height: 1.15;
  margin: 0 0 10px;
  color: var(--paper);
}

.page-about .about-cta__text p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
  max-width: 52ch;
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

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

  .page-about .about-fig--wide {
    grid-column: span 2;
  }

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

  .page-about .about-team__bar {
    height: 28px;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: clamp(20px, 2.4vw, 32px);
    align-items: stretch;
  }

  .page-about .about-hero__figures {
    grid-template-columns: 1fr;
    align-content: stretch;
  }

  .page-about .about-fig--wide {
    grid-column: auto;
  }

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

  .page-about .about-flow .about-card:nth-child(2) {
    transform: translateY(-12px);
  }

  .page-about .about-flow .about-card:nth-child(2):hover {
    transform: translate(-2px, -14px);
  }

  .page-about .about-roles {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: clamp(16px, 2vw, 26px);
  }

  .page-about .about-role:nth-child(2) {
    margin-top: 32px;
  }

  .page-about .about-role:nth-child(3) {
    margin-top: 64px;
  }

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

  .page-about .about-track__node + .about-track__node {
    margin-top: 0;
  }

  .page-about .about-team {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    gap: clamp(20px, 2.6vw, 36px);
  }

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

  .page-about .about-eco {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: clamp(20px, 2.6vw, 36px);
  }

  .page-about .about-cta {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: center;
    gap: clamp(20px, 3vw, 40px);
  }

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

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

  .page-about .about-card:hover,
  .page-about .about-stat:hover,
  .page-about .about-flow .about-card:nth-child(2),
  .page-about .about-flow .about-card:nth-child(2):hover {
    transform: none;
  }
}
<<<PAGE_CSS_DONE>>>