.page-about {
  --ab-muted: #56665D;
  --ab-muted-light: #A9B8B0;
  --ab-hair: rgba(12, 35, 28, .14);
  --ab-hair-light: rgba(243, 239, 228, .18);
  --ab-shadow: 0 24px 56px -36px rgba(12, 35, 28, .55);
  background: var(--cream);
  color: var(--ink-deep);
  font-family: var(--font-sans);
  overflow-x: hidden;
}

.page-about .num,
.page-about .ab-figures__num,
.page-about .ab-role__num,
.page-about .ab-method__age,
.page-about .ab-rail__year,
.page-about .ab-node__year,
.page-about .ab-stand__num,
.page-about .ab-campus__count {
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
}

/* ---------- 首屏 ---------- */
.page-about .ab-lead {
  position: relative;
  padding: calc(var(--head-h) + 48px) 0 64px;
  background:
    radial-gradient(120% 88% at 86% 6%, rgba(200, 255, 61, .14), transparent 58%),
    radial-gradient(90% 70% at 4% 100%, rgba(255, 122, 26, .12), transparent 60%),
    linear-gradient(168deg, var(--pitch) 0%, var(--ink-deep) 48%, var(--near-black) 100%);
  color: var(--paper-white);
}

.page-about .ab-lead .breadcrumbs {
  margin-bottom: 36px;
}

.page-about .ab-lead .breadcrumbs,
.page-about .ab-lead .breadcrumbs a,
.page-about .ab-lead .breadcrumbs__sep {
  color: var(--cold);
}

.page-about .ab-lead__split {
  display: grid;
  gap: 40px;
  align-items: center;
}

.page-about .ab-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 20px;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--lime);
}

.page-about .ab-kicker::before {
  content: "";
  width: 26px;
  height: 2px;
  background: var(--lime);
  border-radius: 2px;
}

.page-about .ab-lead h1 {
  margin: 0 0 22px;
  font-size: clamp(30px, 7vw, 54px);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: -.02em;
  color: var(--paper-white);
}

.page-about .ab-lead__text {
  margin: 0;
  max-width: 38em;
  font-size: 16px;
  line-height: 1.95;
  color: var(--ink-soft);
}

.page-about .ab-lead__viz {
  order: -1;
}

.page-about .ab-lead__viz svg {
  display: block;
  width: 100%;
  max-width: 460px;
  height: auto;
  margin-inline: auto;
  color: rgba(243, 239, 228, .32);
}

.page-about .ab-figures {
  list-style: none;
  margin: 48px 0 0;
  padding: 28px 0 0;
  border-top: 1px solid var(--ab-hair-light);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 26px 16px;
}

.page-about .ab-figures__num {
  display: block;
  font-size: clamp(26px, 6vw, 40px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--lime);
}

.page-about .ab-figures__label {
  display: block;
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--cold);
}

/* ---------- 通用区块头 ---------- */
.page-about .ab-head {
  max-width: 720px;
  margin-bottom: 44px;
}

.page-about .ab-head h2,
.page-about .ab-cta h2 {
  margin: 14px 0 16px;
  font-size: clamp(24px, 5vw, 38px);
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: -.018em;
  color: var(--ink-deep);
}

.page-about .ab-head__lead {
  margin: 0;
  font-size: 16px;
  line-height: 1.9;
  color: var(--ab-muted);
}

.page-about .ab-subhead {
  margin: 0 0 18px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--rust);
}

.page-about .media {
  margin: 0;
  border-radius: var(--r-lg);
  overflow: hidden;
}

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

/* ---------- 团队阵容 ---------- */
.page-about .ab-team {
  padding: 68px 0 72px;
  background: var(--cream);
}

.page-about .ab-team__body {
  display: grid;
  gap: 40px;
}

.page-about .ab-team__media img {
  aspect-ratio: 3 / 2;
  border-radius: var(--r-lg);
}

.page-about .ab-roles__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 4px;
}

.page-about .ab-role {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 6px 14px;
  padding: 16px 0 14px;
  border-bottom: 1px solid var(--ab-hair);
}

.page-about .ab-role__name {
  grid-column: 1;
  font-size: 15px;
  line-height: 1.5;
  color: var(--ink-deep);
}

.page-about .ab-role__num {
  grid-column: 2;
  font-size: 24px;
  font-weight: 700;
  line-height: 1;
  color: var(--rust);
  text-align: right;
}

.page-about .ab-role__track {
  grid-column: 1 / -1;
  display: block;
  height: 6px;
  border-radius: var(--r-pill);
  background: var(--paper-grey);
  overflow: hidden;
}

.page-about .ab-role__fill {
  display: block;
  height: 100%;
  border-radius: var(--r-pill);
  background: linear-gradient(90deg, var(--pitch), var(--lime));
}

.page-about .ab-role--a .ab-role__fill { width: 61%; }
.page-about .ab-role--b .ab-role__fill { width: 16%; }
.page-about .ab-role--c .ab-role__fill { width: 13%; }
.page-about .ab-role--d .ab-role__fill { width: 10%; }

.page-about .ab-roles__note {
  margin: 24px 0 0;
  padding: 20px 22px;
  border-left: 3px solid var(--rust);
  border-radius: 0 var(--r-md) var(--r-md) 0;
  background: rgba(255, 253, 246, .82);
  font-size: 15px;
  line-height: 1.9;
  color: var(--ab-muted);
}

/* ---------- 训练理念 ---------- */
.page-about .ab-method {
  padding: 0 0 72px;
  background: var(--cream);
}

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

.page-about .ab-method__card {
  padding: 26px 24px 22px;
  border: 1px solid var(--ab-hair);
  border-radius: var(--r-lg);
  background: var(--paper-white);
  transition: transform .4s var(--ease), box-shadow .4s var(--ease), border-color .4s var(--ease);
}

.page-about .ab-method__card:hover,
.page-about .ab-method__card:focus {
  outline: none;
  transform: translateY(-5px);
  border-color: rgba(200, 255, 61, .8);
  box-shadow: var(--ab-shadow);
}

.page-about .ab-method__age {
  margin: 0 0 4px;
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--rust);
}

.page-about .ab-method__title {
  margin: 0 0 12px;
  font-size: 19px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--ink-deep);
}

.page-about .ab-method__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.88;
  color: var(--ab-muted);
}

.page-about .ab-method__more {
  margin: 0;
  max-height: 0;
  padding-top: 0;
  overflow: hidden;
  opacity: 0;
  font-family: var(--font-data);
  font-size: 12.5px;
  line-height: 1.85;
  color: var(--pitch);
  border-top: 1px dashed transparent;
  transition: max-height .4s var(--ease), opacity .3s var(--ease), padding-top .4s var(--ease), border-color .4s var(--ease);
}

.page-about .ab-method__card:hover .ab-method__more,
.page-about .ab-method__card:focus .ab-method__more {
  max-height: 12em;
  padding-top: 14px;
  opacity: 1;
  border-top-color: var(--ab-hair);
}

/* ---------- 发展历程 ---------- */
.page-about .ab-history {
  padding: 0 0 76px;
  background: var(--cream);
}

.page-about .ab-history__grid {
  display: grid;
  gap: 34px;
}

.page-about .ab-rail__title {
  margin: 0;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--rust);
}

.page-about .ab-rail__list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0 0 6px;
  display: flex;
  gap: 10px;
  overflow-x: auto;
}

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

.page-about .ab-rail__list a {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 12px 16px;
  border: 1px solid var(--ab-hair);
  border-radius: var(--r-md);
  text-decoration: none;
  white-space: nowrap;
  transition: border-color .3s var(--ease), background .3s var(--ease);
}

.page-about .ab-rail__list a:hover,
.page-about .ab-rail__list a:focus-visible {
  outline: none;
  border-color: var(--rust);
  background: rgba(255, 253, 246, .9);
}

.page-about .ab-rail__year {
  font-size: 18px;
  font-weight: 700;
  line-height: 1;
  color: var(--ink-deep);
}

.page-about .ab-rail__tag {
  font-size: 12px;
  color: var(--ab-muted);
}

.page-about .ab-history__stream {
  display: grid;
  gap: 36px;
}

.page-about .ab-node {
  position: relative;
  padding-left: 26px;
}

.page-about .ab-node::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 10px;
  height: 10px;
  border-radius: var(--r-pill);
  background: var(--rust);
  box-shadow: 0 0 0 4px rgba(122, 59, 46, .14);
  transition: background .3s var(--ease), box-shadow .3s var(--ease);
}

.page-about .ab-node:target::before {
  background: var(--lime);
  box-shadow: 0 0 0 5px rgba(20, 56, 44, .3);
}

.page-about .ab-node__year {
  margin: 0 0 8px;
  font-size: 22px;
  font-weight: 700;
  line-height: 1;
  color: var(--rust);
}

.page-about .ab-node h3 {
  margin: 0 0 12px;
  font-size: 19px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--ink-deep);
}

.page-about .ab-node p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.92;
  color: var(--ab-muted);
}

.page-about .ab-history__media img {
  aspect-ratio: 10 / 7;
}

/* ---------- 看台 ---------- */
.page-about .ab-stand {
  padding: 68px 0 72px;
  background:
    radial-gradient(110% 82% at 10% 0%, rgba(200, 255, 61, .13), transparent 56%),
    radial-gradient(80% 70% at 100% 100%, rgba(255, 122, 26, .1), transparent 58%),
    linear-gradient(180deg, var(--ink-deep) 0%, var(--near-black) 100%);
  color: var(--ink-soft);
}

.page-about .ab-stand .section-num {
  color: var(--orange);
  border-bottom-color: rgba(255, 122, 26, .5);
}

.page-about .ab-stand h2 {
  margin: 14px 0 18px;
  font-size: clamp(24px, 5vw, 38px);
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: -.018em;
  color: var(--paper-white);
}

.page-about .ab-stand__grid {
  display: grid;
  gap: 36px;
}

.page-about .ab-stand__copy p {
  margin: 0 0 16px;
  font-size: 15.5px;
  line-height: 1.92;
  color: var(--ink-soft);
}

.page-about .ab-stand__copy a {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(200, 255, 61, .45);
}

.page-about .ab-stand__copy a:hover {
  border-bottom-color: var(--lime);
}

.page-about .ab-stand__chips {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .ab-stand__chips li {
  padding: 8px 16px;
  border: 1px solid var(--ab-hair-light);
  border-radius: var(--r-pill);
  font-size: 13px;
  color: var(--lime);
}

.page-about .ab-stand__media img {
  aspect-ratio: 12 / 7;
}

.page-about .ab-stand__stats {
  list-style: none;
  margin: 48px 0 0;
  padding: 28px 0 0;
  border-top: 1px solid var(--ab-hair-light);
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px 12px;
}

.page-about .ab-stand__num {
  display: block;
  font-size: clamp(26px, 6vw, 40px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--orange);
}

.page-about .ab-stand__label {
  display: block;
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--cold);
}

/* ---------- 校园合作与升学 ---------- */
.page-about .ab-campus {
  padding: 68px 0 72px;
  background:
    radial-gradient(90% 80% at 92% 8%, rgba(200, 255, 61, .09), transparent 58%),
    var(--pitch);
  color: var(--ink-soft);
}

.page-about .ab-campus .section-num {
  color: var(--lime);
  border-bottom-color: rgba(200, 255, 61, .5);
}

.page-about .ab-campus .ab-head h2 {
  color: var(--paper-white);
}

.page-about .ab-campus .ab-head__lead {
  color: var(--ink-soft);
}

.page-about .ab-campus__grid {
  display: grid;
  gap: 22px;
}

.page-about .ab-campus__col {
  padding: 26px 24px;
  border: 1px solid var(--ab-hair-light);
  border-radius: var(--r-lg);
  background: rgba(7, 19, 15, .32);
}

.page-about .ab-campus__col h3 {
  margin: 0 0 14px;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--lime);
}

.page-about .ab-campus__col p {
  margin: 0;
  font-size: 15px;
  line-height: 1.9;
  color: var(--ink-soft);
}

.page-about .ab-campus__list {
  list-style: none;
  margin: 32px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .ab-campus__list li {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--ab-hair-light);
  font-size: 15px;
  color: var(--ink-soft);
}

.page-about .ab-campus__count {
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  color: var(--paper-white);
}

/* ---------- 收束 ---------- */
.page-about .ab-cta {
  padding: 64px 0 76px;
  background:
    radial-gradient(100% 90% at 88% 0%, rgba(200, 255, 61, .12), transparent 58%),
    var(--ink-deep);
  color: var(--ink-soft);
}

.page-about .ab-cta h2 {
  color: var(--paper-white);
}

.page-about .ab-cta p {
  margin: 0;
  max-width: 42em;
  font-size: 15.5px;
  line-height: 1.92;
  color: var(--ink-soft);
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-about .ab-lead {
    padding-top: calc(var(--head-h) + 68px);
    padding-bottom: 84px;
  }

  .page-about .ab-figures {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    margin-top: 56px;
  }

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

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

  .page-about .ab-team,
  .page-about .ab-stand,
  .page-about .ab-campus {
    padding-top: 88px;
    padding-bottom: 92px;
  }

  .page-about .ab-method,
  .page-about .ab-history {
    padding-bottom: 96px;
  }
}

@media (min-width: 960px) {
  .page-about .ab-lead__split {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
    gap: 60px;
  }

  .page-about .ab-lead__viz {
    order: 0;
  }

  .page-about .ab-lead__viz svg {
    max-width: 100%;
  }

  .page-about .ab-team__body {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

  .page-about .ab-stand__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    gap: 56px;
    align-items: center;
  }
}

@media (min-width: 1000px) {
  .page-about .ab-history__grid {
    grid-template-columns: 208px minmax(0, 1fr);
    gap: 64px;
  }

  .page-about .ab-rail {
    position: sticky;
    top: calc(var(--head-h) + 32px);
    align-self: start;
  }

  .page-about .ab-rail__list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-about .ab-rail__list li {
    flex: initial;
  }

  .page-about .ab-rail__list a {
    border: 0;
    border-left: 2px solid var(--ab-hair);
    border-radius: 0;
    padding: 14px 0 14px 18px;
    white-space: normal;
    background: transparent;
  }

  .page-about .ab-rail__list a:hover,
  .page-about .ab-rail__list a:focus-visible {
    border-left-color: var(--rust);
    background: linear-gradient(90deg, rgba(122, 59, 46, .1), transparent 70%);
  }
}

@media (min-width: 1120px) {
  .page-about .ab-method__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }

  .page-about .ab-method__card {
    padding: 30px 28px 26px;
  }
}

@media (max-width: 480px) {
  .page-about .ab-stand__stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .ab-role__num {
    font-size: 21px;
  }

  .page-about .ab-figures__label {
    font-size: 12px;
  }
}
<<<END>>>