.page-about {
  --about-rail-w: 172px;
  --about-gap: 44px;
  --about-hair: rgba(124, 135, 127, 0.24);
  --about-hair-strong: rgba(124, 135, 127, 0.46);
  color: var(--text);
  overflow-x: hidden;
}

/* ---------- 面包屑 ---------- */
.page-about .breadcrumb {
  padding-top: 30px;
}

.page-about .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--text-mute);
}

.page-about .breadcrumb__list li + li::before {
  content: "/";
  margin-right: 6px;
  color: var(--stone-500);
}

.page-about .breadcrumb__list a {
  color: var(--text-mute);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.18s var(--ease-hard), border-color 0.18s var(--ease-hard);
}

.page-about .breadcrumb__list a:hover,
.page-about .breadcrumb__list a:focus-visible {
  color: var(--lime-400);
  border-bottom-color: var(--lime-400);
}

.page-about .breadcrumb__list li[aria-current="page"] {
  color: var(--clay-500);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: 36px 0 0;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -14%;
  left: -12%;
  right: -12%;
  height: 70%;
  background: radial-gradient(58% 62% at 20% 24%, rgba(46, 74, 60, 0.55), transparent 72%);
  pointer-events: none;
  z-index: 0;
}

.page-about .about-hero .wrap {
  position: relative;
  z-index: 1;
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
}

.page-about .about-hero__idx {
  margin: 0;
  color: var(--clay-500);
}

.page-about .about-hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 6.6vw, 62px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  text-wrap: balance;
}

.page-about .about-hero__lede {
  margin: 0;
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.82;
  color: var(--text-soft);
}

.page-about .about-hero__aside {
  margin: 0;
  padding: 18px 18px 18px 20px;
  background: linear-gradient(160deg, rgba(46, 74, 60, 0.5), rgba(18, 58, 56, 0.26));
  border: 1px solid var(--about-hair);
  border-left: 2px solid var(--clay-500);
  border-radius: var(--r-organic);
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  letter-spacing: 0.04em;
  color: var(--text-soft);
}

.page-about .about-hero__aside p {
  margin: 0 0 8px;
}

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

.page-about .about-hero__aside .idx {
  margin: 0 0 12px;
  color: var(--stone-500);
}

.page-about .about-hero__figure {
  margin: 44px 0 0;
  position: relative;
  overflow: hidden;
}

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

/* ---------- 章节锚点条 ---------- */
.page-about .about-anchors {
  margin-top: 52px;
  border-top: 1px solid var(--about-hair);
  border-bottom: 1px solid var(--about-hair);
}

.page-about .about-anchors__list {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 22px;
  margin: 0;
  padding: 14px 0;
  list-style: none;
}

.page-about .about-anchors__list a {
  display: inline-block;
  padding: 4px 2px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--text-mute);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.18s var(--ease-hard), border-color 0.18s var(--ease-hard);
}

.page-about .about-anchors__list a:hover,
.page-about .about-anchors__list a:focus-visible {
  color: var(--lime-400);
  border-bottom-color: var(--lime-400);
}

/* ---------- 通用区块 ---------- */
.page-about .about-block {
  padding-top: 68px;
}

.page-about .about-block--cta {
  padding-bottom: 96px;
}

.page-about .about-h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(23px, 3.4vw, 38px);
  line-height: 1.18;
  letter-spacing: -0.01em;
  max-width: 24ch;
}

.page-about .about-head {
  display: grid;
  gap: 12px;
  padding-top: 22px;
  margin-bottom: 34px;
  border-top: 1px solid var(--about-hair-strong);
}

.page-about .about-head .idx {
  margin: 0;
  color: var(--clay-500);
}

.page-about .about-head__note {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-mute);
  max-width: 52ch;
}

.page-about .about-lead {
  margin: 0 0 18px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--text-soft);
  max-width: 64ch;
}

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

/* 左窄栏 + 右正文 */
.page-about .about-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.page-about .about-split__rail .idx {
  margin: 0;
  color: var(--clay-500);
}

.page-about .about-split__body {
  min-width: 0;
}

.page-about .about-split__body .about-h2 {
  margin-bottom: 16px;
}

/* ---------- 覆盖规模数据 ---------- */
.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
  background: var(--about-hair);
  border: 1px solid var(--about-hair);
  border-radius: var(--r-soft);
  overflow: hidden;
}

.page-about .about-stats__item {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px 18px 22px;
  background: linear-gradient(180deg, rgba(46, 74, 60, 0.34), rgba(11, 27, 22, 0.64));
  transition: background 0.2s var(--ease-hard);
}

.page-about .about-stats__item:hover {
  background: linear-gradient(180deg, rgba(46, 74, 60, 0.62), rgba(11, 27, 22, 0.72));
}

.page-about .about-stats__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(28px, 4.6vw, 44px);
  line-height: 1;
  color: var(--lime-400);
  font-variant-numeric: tabular-nums;
}

.page-about .about-stats__label {
  font-size: 13px;
  line-height: 1.55;
  letter-spacing: 0.02em;
  color: var(--text-mute);
}

/* ---------- 时间线 ---------- */
.page-about .about-timeline {
  position: relative;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-timeline__item {
  display: grid;
  grid-template-columns: 68px minmax(0, 1fr);
  column-gap: 20px;
  padding-bottom: 38px;
}

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

.page-about .about-timeline__when {
  position: relative;
  padding-right: 16px;
  text-align: right;
  border-right: 1px solid var(--about-hair);
}

.page-about .about-timeline__item:last-child .about-timeline__when {
  border-right-color: transparent;
}

.page-about .about-timeline__year {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.04em;
  color: var(--clay-500);
  font-variant-numeric: tabular-nums;
}

.page-about .about-timeline__stage {
  display: block;
  margin-top: 6px;
  font-size: 11px;
  white-space: nowrap;
  color: var(--stone-500);
}

.page-about .about-timeline__when::after {
  content: "";
  position: absolute;
  top: 4px;
  right: -5px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--clay-500);
  box-shadow: 0 0 0 3px var(--ink-900);
  transition: background 0.18s var(--ease-hard), box-shadow 0.18s var(--ease-hard);
}

.page-about .about-timeline__item:hover .about-timeline__when::after,
.page-about .about-timeline__item:focus-within .about-timeline__when::after {
  background: var(--lime-400);
  box-shadow: 0 0 0 3px var(--ink-900), 0 0 0 7px rgba(198, 241, 53, 0.16);
}

.page-about .about-timeline__what {
  min-width: 0;
  transition: transform 0.2s var(--ease-hard);
}

.page-about .about-timeline__item:hover .about-timeline__what,
.page-about .about-timeline__item:focus-within .about-timeline__what {
  transform: translateX(4px);
}

.page-about .about-timeline__title {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 800;
  line-height: 1.36;
}

.page-about .about-timeline__what p {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.82;
  color: var(--text-soft);
}

/* ---------- 团队分工 ---------- */
.page-about .about-teamlayout {
  display: grid;
  gap: 32px;
}

.page-about .about-teamlayout__figure {
  margin: 0;
  position: relative;
  overflow: hidden;
}

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

.page-about .about-teams {
  display: grid;
}

.page-about .about-team {
  display: grid;
  gap: 8px;
  padding: 20px 0 22px;
  border-top: 1px solid var(--about-hair);
}

.page-about .about-team:first-child {
  border-top-color: var(--about-hair-strong);
}

.page-about .about-team__name {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin: 0;
  font-size: 17px;
  font-weight: 800;
  line-height: 1.4;
}

.page-about .about-team__name::before {
  content: "";
  flex: none;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--clay-500);
  transform: translateY(-2px);
}

.page-about .about-team:nth-child(2) .about-team__name::before {
  background: var(--lime-400);
}

.page-about .about-team:nth-child(3) .about-team__name::before {
  background: var(--orange-500);
}

.page-about .about-team:nth-child(4) .about-team__name::before {
  background: var(--stone-500);
}

.page-about .about-team__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--text-soft);
}

/* ---------- 数据来源 ---------- */
.page-about .about-sources {
  display: grid;
  gap: 1px;
  background: var(--about-hair);
  border: 1px solid var(--about-hair);
  border-radius: var(--r-soft);
  overflow: hidden;
}

.page-about .about-source {
  display: grid;
  align-content: start;
  gap: 10px;
  padding: 24px 22px 28px;
  background: rgba(11, 27, 22, 0.74);
  transition: background 0.2s var(--ease-hard);
}

.page-about .about-source:hover {
  background: rgba(18, 58, 56, 0.5);
}

.page-about .about-source__no {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--orange-500);
}

.page-about .about-source__title {
  margin: 0;
  font-size: 17px;
  font-weight: 800;
}

.page-about .about-source p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--text-soft);
}

/* ---------- 合作生态 ---------- */
.page-about .about-partners__figure {
  margin: 0 0 40px;
  position: relative;
  overflow: hidden;
}

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

.page-about .about-award {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: 24px;
  padding: 16px 18px;
  border: 1px solid var(--about-hair);
  border-radius: var(--r-organic);
  background: linear-gradient(140deg, rgba(46, 74, 60, 0.42), rgba(11, 27, 22, 0.3));
}

.page-about .about-award p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--text-soft);
}

.page-about .about-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 26px 0 0;
}

/* ---------- 使用场景 ---------- */
.page-about .about-usecases {
  display: grid;
  gap: 20px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-usecase {
  display: grid;
  align-content: start;
  gap: 10px;
  padding: 24px 22px 26px;
  border: 1px solid var(--about-hair);
  border-radius: var(--r-organic);
  background: linear-gradient(150deg, rgba(18, 58, 56, 0.34), rgba(11, 27, 22, 0.22));
  transition: border-color 0.2s var(--ease-hard), transform 0.2s var(--ease-hard);
}

.page-about .about-usecase:hover {
  border-color: rgba(198, 241, 53, 0.5);
  transform: translateY(-4px);
}

.page-about .about-usecase__title {
  margin: 0;
  font-size: 17px;
  font-weight: 800;
  line-height: 1.42;
}

.page-about .about-usecase__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--text-soft);
}

/* ---------- 结尾行动区 ---------- */
.page-about .about-cta {
  display: grid;
  gap: 16px;
  padding: 38px 26px 42px;
  border: 1px solid var(--about-hair-strong);
  border-radius: var(--r-organic);
  background: radial-gradient(84% 130% at 10% 0%, rgba(46, 74, 60, 0.62), rgba(11, 27, 22, 0.92));
}

.page-about .about-cta .idx {
  margin: 0;
  color: var(--lime-400);
}

.page-about .about-cta h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(23px, 3.8vw, 40px);
  line-height: 1.16;
  letter-spacing: -0.015em;
  max-width: 22ch;
}

.page-about .about-cta p {
  margin: 0;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.82;
  color: var(--text-soft);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 6px;
}

/* ---------- 桌面与平板 ---------- */
@media (min-width: 760px) {
  .page-about .about-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-usecases {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
  }

  .page-about .about-sources {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr) minmax(0, 1fr);
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    column-gap: 24px;
    row-gap: 26px;
  }

  .page-about .about-hero__idx {
    grid-column: 1 / -1;
    grid-row: 1;
  }

  .page-about .about-hero__title {
    grid-column: 1 / 9;
    grid-row: 2;
  }

  .page-about .about-hero__aside {
    grid-column: 9 / 13;
    grid-row: 2 / 4;
    align-self: start;
  }

  .page-about .about-hero__lede {
    grid-column: 1 / 8;
    grid-row: 3;
  }

  .page-about .about-head {
    grid-template-columns: minmax(0, 1fr) minmax(0, 320px);
    column-gap: 44px;
    align-items: end;
  }

  .page-about .about-head .idx {
    grid-column: 1 / -1;
  }

  .page-about .about-head__note {
    text-align: right;
    justify-self: end;
  }

  .page-about .about-split {
    grid-template-columns: var(--about-rail-w) minmax(0, 1fr);
    column-gap: var(--about-gap);
  }

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

  .page-about .about-timeline__item {
    grid-template-columns: var(--about-rail-w) minmax(0, 1fr);
    column-gap: var(--about-gap);
    padding-bottom: 46px;
  }

  .page-about .about-timeline__when {
    padding-right: 24px;
  }

  .page-about .about-timeline__year {
    font-size: 17px;
  }

  .page-about .about-teamlayout {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    column-gap: 44px;
    align-items: start;
  }

  .page-about .about-cta {
    padding: 52px 48px 56px;
    max-width: 1000px;
  }
}

@media (min-width: 1180px) {
  .page-about .about-hero {
    padding-top: 48px;
  }

  .page-about .about-block {
    padding-top: 84px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-timeline__what,
  .page-about .about-usecase,
  .page-about .about-stats__item {
    transition-duration: 0.01ms;
  }

  .page-about .about-timeline__item:hover .about-timeline__what,
  .page-about .about-timeline__item:focus-within .about-timeline__what,
  .page-about .about-usecase:hover {
    transform: none;
  }
}
<<<END>>>