.page-about .ab-h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(24px, 3.4vw, 38px);
  line-height: 1.22;
  letter-spacing: -.012em;
  margin: 10px 0 18px;
  color: var(--text);
  text-wrap: balance;
}

.page-about .ab-lede-serif {
  font-family: var(--font-serif);
  font-size: clamp(17px, 1.8vw, 20px);
  line-height: 1.8;
  color: var(--note);
  margin: 0 0 20px;
  max-width: 34em;
}

.page-about .cp-section--ink .ab-h2 {
  color: var(--paper);
}

.page-about .cp-section--ink .ab-lede-serif {
  color: var(--silver);
}

/* ---------- 首屏 ---------- */
.page-about .ab-hero {
  position: relative;
  overflow: hidden;
  padding-top: clamp(24px, 4vw, 40px);
}

.page-about .ab-hero::after {
  content: "";
  position: absolute;
  right: -12%;
  top: 4%;
  width: clamp(180px, 30vw, 380px);
  height: clamp(180px, 30vw, 380px);
  background: linear-gradient(150deg, var(--amber-lift), var(--amber));
  clip-path: polygon(0 0, 100% 18%, 82% 100%, 6% 82%);
  opacity: .14;
  pointer-events: none;
  z-index: 0;
}

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

.page-about .ab-hero__grid {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
  margin-top: clamp(22px, 3.6vw, 40px);
}

.page-about .ab-hero__title {
  margin: 12px 0 20px;
  line-height: 1.12;
  letter-spacing: -.02em;
  max-width: 15em;
}

.page-about .ab-hero__lede {
  max-width: 36em;
}

.page-about .ab-facts {
  margin: 0;
  display: grid;
}

.page-about .ab-facts__row {
  display: grid;
  gap: 4px;
  padding: 13px 0 15px;
  border-top: 1px solid var(--line-light);
}

.page-about .ab-facts__row:last-child {
  border-bottom: 1px solid var(--line-light);
}

.page-about .ab-facts__label {
  font-size: 13px;
  letter-spacing: .05em;
  color: var(--note);
}

.page-about .ab-facts__val {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 600;
  color: var(--text);
  letter-spacing: .04em;
}

.page-about .ab-facts__val::before {
  content: "";
  flex: 0 0 auto;
  width: 14px;
  height: 2px;
  background: var(--amber);
}

@media (min-width: 900px) {
  .page-about .ab-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: clamp(32px, 5vw, 80px);
    align-items: end;
  }
}

/* ---------- 起点 ---------- */
.page-about .ab-origin__grid {
  display: grid;
  gap: clamp(28px, 4vw, 52px);
}

.page-about .ab-origin__body p {
  font-size: 16.5px;
  line-height: 1.8;
  color: var(--text);
  margin: 0 0 16px;
  max-width: 34em;
}

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

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

@media (min-width: 900px) {
  .page-about .ab-origin__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: clamp(36px, 5vw, 76px);
    align-items: start;
  }

  .page-about .ab-origin__figure {
    margin-top: clamp(28px, 5vw, 60px);
  }
}

/* ---------- 团队 ---------- */
.page-about .ab-team__top {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  margin-bottom: clamp(32px, 4.5vw, 56px);
}

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

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

.page-about .ab-team__band {
  background: var(--paper);
  border: 1px solid var(--line-light);
  border-top: 3px solid var(--amber);
  border-radius: var(--r-md);
  padding: 22px 20px 24px;
  transition: transform .35s var(--ease), border-color .35s var(--ease), box-shadow .35s var(--ease);
}

.page-about .ab-team__band--b {
  border-top-color: var(--celadon);
}

.page-about .ab-team__band--c {
  border-top-color: var(--silver);
}

.page-about .ab-team__no {
  margin: 0 0 10px;
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--note);
}

.page-about .ab-team__title {
  font-family: var(--font-display);
  font-size: clamp(19px, 2.1vw, 22px);
  font-weight: 700;
  line-height: 1.3;
  margin: 0 0 10px;
  color: var(--text);
}

.page-about .ab-team__desc {
  margin: 0 0 14px;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--note);
}

.page-about .ab-team__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
  border-top: 1px dashed var(--line-light);
  padding-top: 14px;
}

.page-about .ab-team__list li {
  position: relative;
  padding-left: 14px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--text);
}

.page-about .ab-team__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--amber);
}

.page-about .ab-team__band--b .ab-team__list li::before {
  background: var(--celadon);
}

.page-about .ab-team__band--c .ab-team__list li::before {
  background: var(--silver);
}

@media (min-width: 900px) {
  .page-about .ab-team__top {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    align-items: end;
    gap: clamp(32px, 5vw, 64px);
  }

  .page-about .ab-team__bands {
    grid-template-columns: 1.2fr 1fr .85fr;
    gap: 16px;
    align-items: start;
  }

  .page-about .ab-team__band--b {
    margin-top: 18px;
  }

  .page-about .ab-team__band--c {
    margin-top: 36px;
  }

  .page-about .ab-team__band:hover {
    transform: translateY(-5px);
    box-shadow: 0 16px 32px rgba(14, 27, 44, .09);
  }
}

/* ---------- 批次制度（深墨蓝通栏） ---------- */
.page-about .ab-batch__grid {
  display: grid;
  gap: clamp(30px, 4vw, 56px);
}

.page-about .ab-batch__main p {
  color: var(--silver);
  font-size: 16px;
  line-height: 1.82;
  margin: 0 0 16px;
  max-width: 34em;
}

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

.page-about .ab-batch__aside {
  display: grid;
  gap: 22px;
  align-content: start;
}

.page-about .ab-batch__aside .cp-note {
  background: var(--silver-2);
  color: var(--text);
  border-radius: var(--r-md);
  padding: 20px 20px 22px;
}

.page-about .ab-batch__aside .cp-note p {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.75;
}

.page-about .ab-batch__aside .cp-note p:last-child {
  margin-bottom: 0;
}

.page-about .ab-batch__aside .cp-note__label {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .1em;
  color: var(--note);
}

.page-about .ab-batch__code {
  display: inline-block;
  font-size: 15px;
  letter-spacing: .14em;
  color: var(--amber);
  border: 1px dashed rgba(217, 134, 60, .55);
  border-radius: var(--r-sm);
  padding: 7px 12px;
  margin: 2px 0 12px !important;
}

.page-about .ab-batch__stat {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-top: 18px;
  border-top: 1px solid var(--line-dark);
}

.page-about .ab-batch__num {
  font-size: clamp(38px, 5vw, 54px);
  font-weight: 600;
  line-height: 1;
  color: var(--amber-lift);
}

.page-about .ab-batch__numlabel {
  font-size: 14px;
  line-height: 1.7;
  color: var(--silver);
  max-width: 15em;
}

@media (min-width: 900px) {
  .page-about .ab-batch__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: clamp(36px, 5vw, 80px);
  }
}

/* ---------- 时间轴 ---------- */
.page-about .ab-path__head {
  max-width: 40em;
  margin-bottom: clamp(26px, 4vw, 44px);
}

.page-about .ab-timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}

.page-about .ab-timeline::before {
  content: "";
  position: absolute;
  top: 8px;
  bottom: 10px;
  left: 47px;
  width: 1px;
  background: var(--line-light);
}

.page-about .ab-timeline__item {
  position: relative;
  padding: 0 0 clamp(26px, 3.4vw, 38px) 74px;
}

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

.page-about .ab-timeline__no {
  position: absolute;
  left: 0;
  top: 2px;
  width: 32px;
  text-align: right;
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--note);
}

.page-about .ab-timeline__dot {
  position: absolute;
  left: 43px;
  top: 5px;
  width: 9px;
  height: 9px;
  box-sizing: border-box;
  border-radius: 50%;
  background: var(--paper);
  border: 1.5px solid var(--amber);
  transition: transform .28s var(--ease), background .28s var(--ease);
}

.page-about .ab-timeline__title {
  font-family: var(--font-display);
  font-size: clamp(19px, 2.2vw, 23px);
  font-weight: 700;
  line-height: 1.32;
  margin: 0 0 8px;
  color: var(--text);
}

.page-about .ab-timeline__text {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--note);
  max-width: 38em;
}

.page-about .ab-timeline__item--now .ab-timeline__dot {
  background: var(--amber);
  transform: scale(1.12);
}

.page-about .ab-timeline__item--now .ab-timeline__title {
  color: var(--ink-800);
}

.page-about .ab-timeline__item:hover .ab-timeline__dot {
  transform: scale(1.4);
}

.page-about .ab-timeline__item--now:hover .ab-timeline__dot {
  transform: scale(1.5);
}

@media (max-width: 520px) {
  .page-about .ab-timeline::before {
    left: 33px;
  }

  .page-about .ab-timeline__item {
    padding-left: 56px;
  }

  .page-about .ab-timeline__no {
    width: 24px;
    font-size: 12px;
  }

  .page-about .ab-timeline__dot {
    left: 29px;
  }
}

/* ---------- 四条准则 ---------- */
.page-about .ab-rules__head {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-about .ab-rules__list {
  border-bottom: 1px solid var(--line-light);
}

.page-about .ab-rules__list .cp-fold__inner p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.82;
  color: var(--note);
  max-width: 40em;
}

/* ---------- 协作与备案 ---------- */
.page-about .ab-cred__grid {
  display: grid;
  gap: clamp(28px, 4vw, 52px);
}

.page-about .ab-cred__intro {
  font-size: 16.5px;
  line-height: 1.82;
  color: var(--text);
  margin: 0 0 24px;
  max-width: 34em;
}

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

.page-about .ab-cred__list li {
  padding: 16px 18px;
  background: var(--silver-2);
  border-left: 3px solid var(--celadon);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--text);
}

.page-about .ab-cred__list strong {
  display: block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .08em;
  color: var(--note);
  margin-bottom: 6px;
}

.page-about .ab-cred__aside {
  display: grid;
  gap: 18px;
  align-content: start;
}

.page-about .ab-cred__aside .cp-note {
  background: var(--silver-2);
  border-radius: var(--r-md);
  padding: 20px 20px 22px;
  color: var(--text);
}

.page-about .ab-cred__aside .cp-note p {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.78;
}

.page-about .ab-cred__aside .cp-note p:last-child {
  margin-bottom: 0;
}

.page-about .ab-cred__aside .cp-note__label {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .1em;
  color: var(--note);
}

.page-about .ab-cred__icp {
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--note);
}

.page-about .ab-cred__links {
  margin-top: 12px !important;
}

@media (min-width: 900px) {
  .page-about .ab-cred__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: clamp(36px, 5vw, 76px);
  }
}

/* ---------- 收尾图与下一步 ---------- */
.page-about .ab-closing {
  margin: clamp(46px, 6vw, 82px) 0 0;
}

.page-about .ab-next {
  margin-top: clamp(32px, 4vw, 54px);
  padding-top: clamp(26px, 3.6vw, 40px);
  border-top: 1px solid var(--line-light);
  display: grid;
  gap: 14px;
  max-width: 46em;
}

.page-about .ab-next__title {
  font-family: var(--font-display);
  font-size: clamp(21px, 2.6vw, 28px);
  font-weight: 700;
  line-height: 1.3;
  margin: 0;
  color: var(--text);
}

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

.page-about .ab-next__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 8px;
}