.page-about {
  background: var(--ink-900);
  color: var(--paper);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-about .ab-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(24px, 5vw, 52px) 0 clamp(34px, 5vw, 60px);
  background: linear-gradient(168deg, var(--ink-800) 0%, var(--ink-900) 64%);
  border-bottom: 1px solid var(--line);
}

.page-about .ab-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(118deg, transparent 0 52%, rgba(232, 180, 76, 0.16) 52% 52.15%, transparent 52.15% 100%);
  pointer-events: none;
}

.page-about .ab-hero::after {
  content: "";
  position: absolute;
  right: -14%;
  bottom: -46%;
  width: 48vw;
  height: 48vw;
  background: radial-gradient(circle, rgba(79, 179, 168, 0.12) 0%, transparent 68%);
  pointer-events: none;
}

.page-about .ab-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 48px);
  align-items: end;
}

.page-about .ab-hero__main {
  min-width: 0;
}

.page-about .ab-hero__title {
  margin: 0 0 clamp(16px, 2.4vw, 26px);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(38px, 8.4vw, 96px);
  line-height: 1.04;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-about .ab-hero__title-em {
  color: var(--gold);
}

.page-about .ab-hero__lede {
  max-width: 34em;
  margin: 0 0 clamp(20px, 3vw, 30px);
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.8;
  color: var(--muted);
}

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

.page-about .ab-hero__aside {
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-width: 0;
}

.page-about .ab-vert {
  margin: 0 0 4px;
  padding-left: 10px;
  border-left: 1px solid var(--gold);
  font-family: var(--font-kai);
  font-size: 13px;
  line-height: 1.6;
  letter-spacing: 0.2em;
  color: var(--muted);
}

/* ---------- 图片容器 ---------- */
.page-about .ab-fig {
  position: relative;
  margin: 0;
  border: 1px solid var(--line);
  background: var(--ink-800);
  overflow: hidden;
}

.page-about .ab-fig--hero {
  width: 100%;
  max-width: 420px;
  margin-left: auto;
}

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

.page-about .ab-fig__cap {
  padding: 8px 10px;
  border-top: 1px solid var(--line);
  font-family: var(--font-kai);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

/* ---------- 赛季刻度尺 ---------- */
.page-about .ab-scale {
  margin-top: clamp(30px, 5vw, 56px);
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.page-about .ab-scale__label {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-about .ab-scale__list {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .ab-scale__list li {
  border-left: 1px solid var(--line);
}

.page-about .ab-scale__list li:last-child {
  border-right: 1px solid var(--line);
}

.page-about .ab-scale__list a {
  display: block;
  padding: 10px 2px 8px;
  border-top: 2px solid transparent;
  font-family: var(--font-mono);
  font-size: clamp(9px, 1.6vw, 11px);
  text-align: center;
  text-decoration: none;
  color: var(--muted);
  transition: color var(--t) var(--ease), border-color var(--t) var(--ease);
}

.page-about .ab-scale__list li:last-child a {
  color: var(--gold);
  border-top-color: var(--gold);
  font-weight: 700;
}

.page-about .ab-scale__list a:hover,
.page-about .ab-scale__list a:focus-visible {
  color: var(--gold-soft);
  border-top-color: var(--gold);
}

/* ---------- 区块骨架 ---------- */
.page-about .ab-sec {
  padding: clamp(46px, 7vw, 96px) 0;
  border-top: 1px solid var(--line);
}

.page-about .ab-sec__head {
  max-width: 46em;
  margin-bottom: clamp(18px, 2.6vw, 30px);
}

.page-about .ab-col {
  min-width: 0;
}

.page-about .ab-col--side {
  align-self: start;
}

.page-about .ab-idx {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-about .ab-idx::before {
  content: "";
  width: 28px;
  height: 1px;
  background: var(--gold);
}

.page-about .ab-h2 {
  margin: 0 0 clamp(14px, 2vw, 22px);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(26px, 4vw, 44px);
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-about .ab-sub {
  margin: 0;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  color: var(--muted);
}

.page-about .ab-2col {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 54px);
}

.page-about .ab-side {
  margin: clamp(16px, 2vw, 22px) 0 0;
  padding-left: 14px;
  border-left: 1px solid var(--line);
  font-family: var(--font-kai);
  font-size: 13.5px;
  line-height: 1.9;
  color: var(--muted);
}

.page-about .ab-quote {
  margin: clamp(24px, 4vw, 36px) 0 0;
  padding: 4px 0 4px 18px;
  border-left: 3px solid var(--gold);
}

.page-about .ab-quote p {
  margin: 0;
  font-family: var(--font-kai);
  font-size: clamp(17px, 2vw, 21px);
  line-height: 1.7;
  color: var(--paper);
}

/* ---------- 团队名录 ---------- */
.page-about .ab-ledger {
  margin: clamp(22px, 3vw, 34px) 0 0;
  padding: 0;
  list-style: none;
  border-bottom: 1px solid var(--line);
}

.page-about .ab-ledger__row {
  display: grid;
  grid-template-columns: 3.2rem minmax(0, 1fr);
  column-gap: clamp(14px, 2.2vw, 30px);
  align-items: start;
  padding: clamp(16px, 2.2vw, 24px) 6px;
  border-top: 1px solid var(--line);
  transition: background-color var(--t) var(--ease);
}

.page-about .ab-ledger__row:hover {
  background: rgba(22, 41, 60, 0.6);
}

.page-about .ab-ledger__num {
  grid-row: 1 / span 2;
  font-family: var(--font-mono);
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1;
  color: var(--gold);
}

.page-about .ab-ledger__role {
  margin: 0 0 8px;
  font-size: clamp(17px, 1.8vw, 20px);
  font-weight: 700;
  color: var(--paper);
}

.page-about .ab-ledger__desc {
  margin: 0;
  max-width: 48em;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .ab-ledger__row--total .ab-ledger__num {
  color: var(--teal);
}

/* ---------- 三步骤 ---------- */
.page-about .ab-steps {
  margin: clamp(22px, 3vw, 34px) 0 0;
  padding: 0;
  list-style: none;
  border-bottom: 1px solid var(--line);
}

.page-about .ab-step {
  display: grid;
  grid-template-columns: 3.2rem minmax(0, 1fr);
  column-gap: clamp(14px, 2.2vw, 30px);
  padding: clamp(18px, 2.4vw, 26px) 0;
  border-top: 1px solid var(--line);
}

.page-about .ab-step__num {
  grid-row: 1 / span 2;
  font-family: var(--font-mono);
  font-size: clamp(22px, 2.6vw, 30px);
  line-height: 1;
  color: var(--teal);
}

.page-about .ab-step__title {
  margin: 0 0 8px;
  font-size: clamp(17px, 1.8vw, 20px);
  font-weight: 700;
  color: var(--paper);
}

.page-about .ab-step__text {
  margin: 0;
  max-width: 54em;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .ab-after {
  margin: clamp(18px, 2.4vw, 26px) 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .ab-after a {
  color: var(--gold);
  text-decoration: underline;
  text-underline-offset: 4px;
}

/* ---------- 时间线 ---------- */
.page-about .ab-facts {
  margin: clamp(20px, 3vw, 30px) 0 0;
  display: grid;
  gap: 12px;
}

.page-about .ab-facts__item {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.page-about .ab-facts dt {
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.page-about .ab-facts dd {
  margin: 0 0 0 auto;
  font-family: var(--font-mono);
  font-size: clamp(24px, 3vw, 32px);
  line-height: 1;
  color: var(--gold);
}

.page-about .ab-timeline {
  position: relative;
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: clamp(28px, 4vw, 46px);
}

.page-about .ab-timeline::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 0;
  width: 1px;
  background: var(--line);
}

.page-about .ab-tl {
  position: relative;
  padding-left: clamp(20px, 3vw, 30px);
  outline: none;
}

.page-about .ab-tl::before {
  content: "";
  position: absolute;
  left: -4px;
  top: 8px;
  width: 9px;
  height: 9px;
  background: var(--ink-900);
  border: 1px solid var(--gold);
  z-index: 1;
}

.page-about .ab-tl:last-child::before {
  background: var(--gold);
}

.page-about .ab-tl:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 6px;
}

.page-about .ab-tl__range {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--teal);
}

.page-about .ab-tl__title {
  margin: 0 0 8px;
  font-size: clamp(18px, 2vw, 22px);
  font-weight: 800;
  color: var(--paper);
  transition: transform var(--t) var(--ease), color var(--t) var(--ease);
}

.page-about .ab-tl:hover .ab-tl__title,
.page-about .ab-tl:focus-visible .ab-tl__title {
  transform: translateX(4px);
  color: var(--gold-soft);
}

.page-about .ab-tl__text {
  margin: 0 0 10px;
  max-width: 40em;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--muted);
}

.page-about .ab-tl__note {
  margin: 0;
  padding-left: 12px;
  border-left: 1px solid var(--line);
  font-family: var(--font-kai);
  font-size: 13px;
  line-height: 1.8;
  color: var(--muted);
  opacity: 0.55;
  transition: opacity var(--t) var(--ease), border-color var(--t) var(--ease);
}

.page-about .ab-tl:hover .ab-tl__note,
.page-about .ab-tl:focus-visible .ab-tl__note {
  opacity: 1;
  border-color: var(--gold);
}

/* ---------- 合作数字条 ---------- */
.page-about .ab-strip {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(22px, 3vw, 34px) 0;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .ab-strip__item {
  background: var(--ink-800);
  padding: clamp(16px, 2.4vw, 26px);
}

.page-about .ab-strip__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1;
  color: var(--gold);
}

.page-about .ab-strip__unit {
  font-size: 0.5em;
  margin-left: 2px;
  color: var(--gold-soft);
}

.page-about .ab-strip__label {
  display: block;
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--muted);
}

/* ---------- 结尾 ---------- */
.page-about .ab-cta {
  position: relative;
  overflow: hidden;
  padding: clamp(44px, 6vw, 84px) 0;
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, var(--ink-800), var(--ink-900));
}

.page-about .ab-cta::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 3px;
  height: 100%;
  background: var(--gold);
}

.page-about .ab-cta__inner {
  display: grid;
  gap: clamp(14px, 2vw, 22px);
}

.page-about .ab-cta__title {
  margin: 0;
  max-width: 20em;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 3.6vw, 40px);
  line-height: 1.24;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-about .ab-cta__text {
  margin: 0;
  max-width: 36em;
  font-size: 16px;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .ab-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 4px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-about .ab-strip {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 880px) {
  .page-about .ab-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    min-height: min(70vh, 680px);
  }

  .page-about .ab-2col--7-5 {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

  .page-about .ab-2col--5-7 {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  }

  .page-about .ab-col--sticky {
    position: sticky;
    top: calc(var(--bar) + 28px);
    align-self: start;
  }

  .page-about .ab-vert {
    writing-mode: vertical-rl;
    text-orientation: mixed;
    height: 132px;
    margin: 0 0 18px auto;
    padding-left: 0;
    padding-right: 8px;
    border-left: 0;
    border-right: 1px solid var(--line);
    letter-spacing: 0.28em;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .ab-ledger__row,
  .page-about .ab-tl__title,
  .page-about .ab-tl__note,
  .page-about .ab-scale__list a {
    transition: none;
  }

  .page-about .ab-tl:hover .ab-tl__title,
  .page-about .ab-tl:focus-visible .ab-tl__title {
    transform: none;
  }
}
<<<END>>>