.page-about {
  --ab-hairline: rgba(10, 20, 17, 0.14);
  --ab-hairline-dark: rgba(241, 245, 240, 0.16);
  --ab-card: #ffffff;
  background: var(--mist);
  color: var(--ink);
}

/* ================= HERO ================= */

.page-about .ab-hero {
  position: relative;
  overflow: hidden;
  padding: calc(var(--header-h) + 44px) 0 52px;
  color: var(--mist);
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(44, 134, 176, 0.3), transparent 58%),
    linear-gradient(168deg, var(--green-deep) 0%, #0a2b21 100%);
}

.page-about .ab-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(118deg, rgba(241, 245, 240, 0.05) 0 1px, transparent 1px 24px);
}

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

.page-about .ab-crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 30px;
  font-size: 13px;
  color: var(--mist-45);
}

.page-about .ab-crumb a {
  color: var(--mist-82);
  text-decoration: none;
}

.page-about .ab-crumb a:hover,
.page-about .ab-crumb a:focus-visible {
  color: var(--sand);
}

.page-about .ab-crumb span[aria-current] {
  color: var(--sand);
}

.page-about .ab-hero .wh-section-index {
  color: var(--sand);
}

.page-about .ab-hero__grid {
  display: grid;
  gap: 32px;
}

.page-about .ab-hero__title {
  margin: 16px 0 0;
  font-family: var(--font-display);
  font-size: clamp(36px, 7vw, 72px);
  font-weight: 400;
  line-height: 1.06;
  letter-spacing: -0.01em;
}

.page-about .ab-hero__lead {
  margin: 22px 0 0;
  max-width: 30em;
  font-size: 17px;
  line-height: 1.8;
  color: var(--mist-82);
}

.page-about .ab-hero__lead--soft {
  margin-top: 14px;
  font-size: 15px;
  color: var(--mist-62);
}

.page-about .ab-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

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

.page-about .ab-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 30px), calc(100% - 30px) 100%, 0 100%);
}

.page-about .ab-hero__media .wh-media__caption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--mist-45);
}

.page-about .ab-hero__facts {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 22px;
  margin: 52px 0 0;
  padding-top: 22px;
  border-top: 1px solid var(--ab-hairline-dark);
}

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

.page-about .ab-hero__fact dt {
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.04em;
  color: var(--sand);
}

.page-about .ab-hero__fact dd {
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--mist-62);
}

/* ================= 起点 ================= */

.page-about .ab-origin {
  background: var(--mist);
}

.page-about .ab-origin__grid {
  display: grid;
  gap: 18px;
}

.page-about .ab-origin__body {
  max-width: 34em;
}

.page-about .ab-origin__body p {
  margin: 0 0 1.1em;
  font-size: 17px;
  line-height: 1.8;
  color: var(--ink);
}

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

.page-about .ab-origin__body .wh-h2 {
  margin-bottom: 22px;
}

/* ================= 时间线 ================= */

.page-about .ab-road__head {
  max-width: 40em;
}

.page-about .ab-road__lead {
  margin: 16px 0 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--mist-62);
}

.page-about .ab-road__track {
  display: grid;
  gap: 20px;
  margin: 44px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .ab-road__node {
  position: relative;
  padding-top: 30px;
}

.page-about .ab-road__node::before {
  content: "";
  position: absolute;
  top: 10px;
  left: 0;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--sand);
  box-shadow: 0 0 0 5px rgba(217, 165, 72, 0.16);
}

.page-about .ab-road__detail {
  padding-top: 12px;
  border-top: 1px solid var(--ab-hairline-dark);
}

.page-about .ab-road__detail > summary {
  display: block;
  cursor: pointer;
  list-style: none;
}

.page-about .ab-road__detail > summary::-webkit-details-marker {
  display: none;
}

.page-about .ab-road__detail > summary:focus-visible {
  outline: 2px solid var(--sand);
  outline-offset: 4px;
}

.page-about .ab-road__code {
  display: inline-block;
  margin-right: 10px;
  padding: 2px 7px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ink);
  background: var(--sand);
  clip-path: polygon(0 0, calc(100% - 6px) 0, 100% 6px, 100% 100%, 0 100%);
}

.page-about .ab-road__name {
  display: inline;
  font-size: 19px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--mist);
}

.page-about .ab-road__sum {
  display: block;
  margin-top: 7px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--mist-45);
}

.page-about .ab-road__body {
  padding-top: 12px;
}

.page-about .ab-road__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist-82);
}

.page-about .ab-road__detail[open] .ab-road__sum {
  color: var(--sand);
}

/* ================= 板块分组 ================= */

.page-about .ab-blocks {
  background: var(--green-deep);
  color: var(--mist);
}

.page-about .ab-blocks .wh-section-index {
  color: var(--sand);
}

.page-about .ab-blocks__head {
  max-width: 42em;
}

.page-about .ab-blocks__lead {
  margin: 16px 0 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--mist-62);
}

.page-about .ab-blocks__layout {
  display: grid;
  gap: 34px;
  margin-top: 44px;
}

.page-about .ab-map {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.page-about .ab-map__zone {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 4px;
  min-height: 118px;
  padding: 18px 14px;
  border: 1px solid var(--ab-hairline-dark);
  background: rgba(241, 245, 240, 0.04);
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 16px 100%, 0 calc(100% - 16px));
  transition: background 240ms var(--ease), border-color 240ms var(--ease);
}

.page-about .ab-map__zone:hover {
  background: rgba(217, 165, 72, 0.14);
  border-color: var(--sand);
}

.page-about .ab-map__zone-num {
  font-family: var(--font-mono);
  font-size: 30px;
  line-height: 1;
  color: var(--sand);
  letter-spacing: 0.02em;
}

.page-about .ab-map__zone-name {
  font-size: 13px;
  line-height: 1.5;
  color: var(--mist-82);
}

.page-about .ab-groups {
  display: grid;
  gap: 14px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .ab-group {
  padding: 18px 16px 20px;
  border: 1px solid var(--ab-hairline-dark);
  background: rgba(241, 245, 240, 0.03);
  transition: background 240ms var(--ease), border-color 240ms var(--ease);
}

.page-about .ab-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--ab-hairline-dark);
}

.page-about .ab-group__name {
  margin: 0;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--mist);
}

.page-about .ab-group__count {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--sand);
}

.page-about .ab-group__list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 12px 14px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .ab-group__item {
  display: flex;
  align-items: center;
  gap: 9px;
  min-width: 0;
}

.page-about .ab-badge {
  position: relative;
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border: 1px solid var(--mist-45);
  border-radius: 50%;
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--sand);
  transition: border-color 200ms var(--ease), transform 200ms var(--ease);
}

.page-about .ab-badge::after {
  content: "";
  position: absolute;
  inset: 4px;
  border: 1px dashed rgba(217, 165, 72, 0.34);
  border-radius: 50%;
}

.page-about .ab-group__item:hover .ab-badge {
  border-color: var(--sand);
  transform: translateY(-2px);
}

.page-about .ab-group__team {
  min-width: 0;
  font-size: 14px;
  line-height: 1.5;
  color: var(--mist-82);
}

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

.page-about .ab-blocks__media img {
  display: block;
  width: 100%;
  max-width: 420px;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border: 1px solid var(--ab-hairline-dark);
  border-radius: 50%;
  padding: 18px;
}

.page-about .ab-blocks__media .wh-media__caption {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--mist-45);
  text-align: center;
}

.page-about .ab-blocks__note {
  max-width: 44em;
  margin: 38px 0 0;
  padding-top: 20px;
  border-top: 1px solid var(--ab-hairline-dark);
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist-62);
}

.page-about .ab-blocks__layout:has(.ab-map__zone[data-zone="qh"]:hover) .ab-group[data-zone="qh"],
.page-about .ab-blocks__layout:has(.ab-map__zone[data-zone="gs"]:hover) .ab-group[data-zone="gs"],
.page-about .ab-blocks__layout:has(.ab-map__zone[data-zone="nx"]:hover) .ab-group[data-zone="nx"] {
  border-color: var(--sand);
  background: rgba(217, 165, 72, 0.08);
}

/* ================= 团队 ================= */

.page-about .ab-team {
  background: var(--mist);
}

.page-about .ab-team__layout {
  display: grid;
  gap: 30px;
}

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

.page-about .ab-team__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  clip-path: polygon(0 0, calc(100% - 26px) 0, 100% 26px, 100% 100%, 0 100%);
}

.page-about .ab-team__intro p {
  max-width: 34em;
  margin: 14px 0 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink);
}

.page-about .ab-team__intro .wh-h2 {
  margin-bottom: 18px;
}

.page-about .ab-team__cards {
  display: grid;
  gap: 16px;
  margin: 40px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .ab-team__card {
  padding: 24px 22px 26px;
  background: var(--ab-card);
  border: 1px solid var(--ab-hairline);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
}

.page-about .ab-team__num {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 40px;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--green-deep);
}

.page-about .ab-team__unit {
  font-family: var(--font-display);
  font-size: 14px;
  color: var(--gray);
}

.page-about .ab-team__role {
  margin: 16px 0 0;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--ink);
}

.page-about .ab-team__desc {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--gray);
}

/* ================= 协作 ================= */

.page-about .ab-partners {
  background: var(--mist);
}

.page-about .ab-partners__grid {
  display: grid;
  gap: 32px;
}

.page-about .ab-partners__col {
  max-width: 34em;
}

.page-about .ab-partners__col p {
  margin: 14px 0 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink);
}

.page-about .ab-partners__col .wh-h2 {
  margin-bottom: 18px;
}

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

.page-about .ab-partners__stat {
  padding: 22px 20px;
  border: 1px solid var(--ab-hairline);
  background: var(--ab-card);
  border-left: 3px solid var(--sand);
}

.page-about .ab-partners__statnum {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 42px;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--green-deep);
}

.page-about .ab-partners__statlabel {
  margin: 12px 0 0;
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
}

.page-about .ab-partners__statdesc {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--gray);
}

.page-about .ab-partners__note {
  max-width: 46em;
  margin: 36px 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--ab-hairline);
  font-size: 15px;
  line-height: 1.78;
  color: var(--gray);
}

/* ================= 承诺 ================= */

.page-about .ab-close {
  background: linear-gradient(180deg, var(--blue-deep) 0%, #0a2038 100%);
  color: var(--mist);
}

.page-about .ab-close .wh-section-index {
  color: var(--sand);
}

.page-about .ab-close .wh-h2 {
  max-width: 22em;
}

.page-about .ab-close__list {
  display: grid;
  gap: 0;
  margin: 40px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--ab-hairline-dark);
}

.page-about .ab-close__item {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 16px;
  padding: 26px 0;
  border-bottom: 1px solid var(--ab-hairline-dark);
}

.page-about .ab-close__num {
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.08em;
  color: var(--sand);
  padding-top: 3px;
}

.page-about .ab-close__title {
  margin: 0;
  font-size: 19px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--mist);
}

.page-about .ab-close__body p {
  max-width: 42em;
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist-62);
}

.page-about .ab-close__cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px 18px;
  margin-top: 40px;
}

.page-about .ab-close__cta .wh-btn--link {
  color: var(--sand);
}

/* ================= 响应式 ================= */

@media (min-width: 760px) {
  .page-about .ab-hero__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 20px 28px;
  }

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

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

@media (min-width: 900px) {
  .page-about .ab-hero {
    padding: calc(var(--header-h) + 64px) 0 64px;
  }

  .page-about .ab-hero__grid {
    grid-template-columns: minmax(0, 6.4fr) minmax(0, 5.6fr);
    gap: 56px;
    align-items: end;
  }

  .page-about .ab-origin__grid {
    grid-template-columns: 190px minmax(0, 1fr);
    gap: 48px;
  }

  .page-about .ab-road__track {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 26px;
    align-items: start;
    position: relative;
    padding-top: 22px;
  }

  .page-about .ab-road__track::before {
    content: "";
    position: absolute;
    top: 16px;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, var(--sand) 0%, rgba(217, 165, 72, 0.18) 100%);
  }

  .page-about .ab-road__node {
    padding-top: 30px;
  }

  .page-about .ab-road__node::before {
    top: 10px;
    left: 0;
  }

  .page-about .ab-blocks__layout {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 48px;
    align-items: start;
  }

  .page-about .ab-blocks__media {
    position: sticky;
    top: calc(var(--header-h) + 32px);
  }

  .page-about .ab-blocks__media .wh-media__caption {
    max-width: 30ch;
    margin-left: auto;
    margin-right: auto;
    text-align: center;
  }

  .page-about .ab-team__layout {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 52px;
    align-items: start;
  }

  .page-about .ab-partners__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    gap: 56px;
    align-items: start;
  }
}

@media (min-width: 1120px) {
  .page-about .ab-groups {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }
}
<<<END>>>