.page-about {
  --ab-gap: clamp(18px, 2.4vw, 34px);
  --ab-section: clamp(40px, 7vw, 88px);
  --ab-hair: #1E2E3D;
  --ab-soft: rgba(169, 183, 190, 0.18);
  display: block;
}

/* ---------- 首屏 ---------- */

.page-about .ab-hero {
  position: relative;
  padding: 10px 0 clamp(34px, 6vw, 70px);
  overflow: hidden;
}

.page-about .ab-hero::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: clamp(190px, 32vw, 360px);
  background:
    linear-gradient(118deg, rgba(201, 247, 59, 0.10) 0%, rgba(201, 247, 59, 0) 48%),
    linear-gradient(180deg, rgba(14, 27, 44, 0.92) 0%, rgba(10, 31, 25, 0) 100%);
  clip-path: polygon(0 0, 100% 0, 100% 56%, 0 100%);
  pointer-events: none;
  z-index: 0;
}

.page-about .ab-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--ab-gap);
  align-items: end;
}

.page-about .ab-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(30px, 5.6vw, 60px);
  line-height: 1.08;
  letter-spacing: 0.02em;
  color: var(--mist);
  margin: 12px 0 16px;
  max-width: 17ch;
}

.page-about .ab-hero .lede {
  max-width: 46ch;
  color: var(--silver);
  line-height: 1.75;
}

.page-about .ab-hero__facts {
  display: flex;
  flex-wrap: wrap;
  margin: 24px 0 0;
  border-top: 1px solid var(--ab-hair);
  border-bottom: 1px solid var(--ab-hair);
}

.page-about .ab-fact {
  flex: 1 1 96px;
  padding: 13px 12px 13px 0;
  display: flex;
  flex-direction: column;
  gap: 3px;
  border-right: 1px solid var(--ab-hair);
}

.page-about .ab-fact:last-child {
  border-right: 0;
}

.page-about .ab-fact b {
  font-family: var(--font-mono);
  font-size: clamp(21px, 3.2vw, 29px);
  font-weight: 500;
  color: var(--lime);
  letter-spacing: 0.02em;
  line-height: 1.1;
}

.page-about .ab-fact span {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--silver);
}

.page-about .ab-hero__link {
  margin: 18px 0 0;
  font-size: 15px;
  color: var(--silver);
}

.page-about .ab-hero__link a {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid var(--lime-dim);
  padding-bottom: 1px;
  transition: border-color var(--dur) var(--ease);
}

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

.page-about .ab-hero__media {
  margin: 0;
  position: relative;
  border: 1px solid var(--ab-hair);
  background: var(--card);
  overflow: hidden;
}

.page-about .ab-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
  filter: saturate(0.82) contrast(1.06);
}

.page-about .ab-hero__media::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: 74px;
  height: 74px;
  background: var(--lime);
  clip-path: polygon(100% 0, 100% 100%, 0 100%);
  pointer-events: none;
}

.page-about .media__caption {
  display: block;
  padding: 10px 14px 12px;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--silver);
  background: var(--card);
  border-top: 1px solid var(--ab-hair);
}

/* ---------- 编年刻度 ---------- */

.page-about .ab-chron {
  padding: var(--ab-section) 0;
  border-top: 1px solid var(--ab-hair);
}

.page-about .ab-chron__list {
  list-style: none;
  margin: clamp(26px, 4vw, 46px) 0 0;
  padding: 0;
  display: grid;
  gap: clamp(20px, 2.8vw, 32px);
}

.page-about .ab-chron__item {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 14px;
}

.page-about .ab-chron__scale {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding-top: 3px;
}

.page-about .ab-chron__num {
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1;
  letter-spacing: 0.06em;
  color: var(--lime);
  border: 1px solid var(--lime-dim);
  padding: 5px 6px;
}

.page-about .ab-chron__stem {
  flex: 1 1 auto;
  width: 1px;
  min-height: 28px;
  background: linear-gradient(180deg, var(--lime-dim) 0%, rgba(30, 46, 61, 0) 100%);
}

.page-about .ab-chron__item:last-child .ab-chron__stem {
  display: none;
}

.page-about .ab-chron__body {
  border-left: 1px solid var(--ab-hair);
  padding-left: clamp(14px, 2.4vw, 28px);
}

.page-about .ab-chron__body h3 {
  margin: 0 0 9px;
  font-family: var(--font-display);
  font-size: clamp(18px, 2.2vw, 24px);
  line-height: 1.28;
  letter-spacing: 0.01em;
  color: var(--mist);
}

.page-about .ab-chron__body p {
  margin: 0;
  max-width: var(--measure);
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--silver);
}

.page-about .ab-quote {
  margin: clamp(28px, 4.5vw, 52px) 0 0;
  padding: 20px 0 4px 20px;
  border-left: 2px solid var(--lime);
  max-width: 52ch;
}

.page-about .ab-quote p {
  font-family: var(--font-serif);
  font-size: clamp(17px, 2.1vw, 21px);
  line-height: 1.7;
  color: var(--mist);
  margin: 0 0 10px;
}

.page-about .ab-quote cite {
  font-style: normal;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--silver);
}

/* ---------- 职能分工带 ---------- */

.page-about .ab-team {
  padding: var(--ab-section) 0;
  background: var(--night);
  border-top: 1px solid var(--ab-hair);
  border-bottom: 1px solid var(--ab-hair);
}

.page-about .ab-team__intro {
  margin: 22px 0 26px;
  max-width: 54ch;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--silver);
}

.page-about .ab-team__bar {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--ab-hair);
  border: 1px solid var(--ab-hair);
}

.page-about .ab-team__seg {
  background: var(--ink);
  padding: 20px 18px 24px;
  display: flex;
  flex-direction: column;
  gap: 7px;
  transition: background var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-about .ab-team__seg:hover,
.page-about .ab-team__seg:focus-within {
  background: var(--card);
  box-shadow: inset 0 -2px 0 0 var(--lime);
}

.page-about .ab-team__share {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--orange);
}

.page-about .ab-team__name {
  margin: 0;
  font-family: var(--font-display);
  font-size: 18px;
  letter-spacing: 0.02em;
  color: var(--mist);
}

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

/* ---------- 联赛频道 ---------- */

.page-about .ab-league {
  padding: var(--ab-section) 0;
}

.page-about .ab-league__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--ab-gap);
  align-items: start;
}

.page-about .ab-league__lead p {
  margin: 0 0 12px;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--silver);
  max-width: 46ch;
}

.page-about .ab-league__lead p:last-child {
  margin-bottom: 0;
  color: var(--mist);
}

.page-about .ab-league__figure {
  margin: 0;
  border: 1px solid var(--ab-hair);
  background: var(--card);
}

.page-about .ab-league__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  filter: saturate(0.9) contrast(1.05);
}

.page-about .ab-league__tags {
  list-style: none;
  margin: 4px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .ab-league__tags li {
  display: inline-flex;
}

.page-about .ab-tag {
  display: inline-block;
}

.page-about .ab-tag > summary {
  display: block;
  list-style: none;
  cursor: pointer;
  padding: 10px 22px 10px 14px;
  background: var(--card);
  color: var(--mist);
  border: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  clip-path: polygon(0 0, 100% 0, calc(100% - 11px) 100%, 0 100%);
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}

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

.page-about .ab-tag > summary::marker {
  content: "";
}

.page-about .ab-tag > summary:hover,
.page-about .ab-tag > summary:focus-visible {
  background: var(--lime);
  color: var(--ink);
  outline: none;
}

.page-about .ab-tag[open] > summary {
  background: var(--lime);
  color: var(--ink);
}

.page-about .ab-tag__panel {
  margin-top: 8px;
  padding: 10px 14px;
  border-left: 2px solid var(--lime-dim);
  background: rgba(18, 49, 40, 0.75);
  font-size: 13px;
  line-height: 1.75;
  color: var(--silver);
  max-width: 30ch;
}

/* ---------- 内容流程 ---------- */

.page-about .ab-flow {
  padding: var(--ab-section) 0;
  background: var(--night);
  border-top: 1px solid var(--ab-hair);
  border-bottom: 1px solid var(--ab-hair);
}

.page-about .ab-flow__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--ab-gap);
  margin-top: clamp(24px, 4vw, 42px);
  align-items: start;
}

.page-about .ab-flow__figure {
  margin: 0;
  border: 1px solid var(--ab-hair);
  background: var(--card);
}

.page-about .ab-flow__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 5 / 6;
  object-fit: cover;
  filter: saturate(0.7) contrast(1.08);
}

.page-about .ab-flow__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--ab-hair);
  border: 1px solid var(--ab-hair);
}

.page-about .ab-flow__step {
  background: var(--ink);
  padding: 18px 16px 22px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-about .ab-flow__no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--lime);
}

.page-about .ab-flow__step h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 17px;
  letter-spacing: 0.02em;
  color: var(--mist);
}

.page-about .ab-flow__step p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--silver);
}

/* ---------- 合作方 ---------- */

.page-about .ab-partner {
  padding: var(--ab-section) 0;
}

.page-about .ab-partner__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--ab-gap);
  margin-top: clamp(24px, 4vw, 40px);
}

.page-about .ab-partner__card {
  border: 1px solid var(--ab-hair);
  border-top: 2px solid var(--lime-dim);
  background: var(--card);
  padding: 22px 20px 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: border-top-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-about .ab-partner__card:hover {
  border-top-color: var(--lime);
  box-shadow: var(--shadow-1);
  transform: translateY(-2px);
}

.page-about .ab-partner__num {
  font-family: var(--font-mono);
  font-size: clamp(30px, 4.6vw, 42px);
  line-height: 1;
  color: var(--lime);
  letter-spacing: 0.02em;
}

.page-about .ab-partner__card h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 16px;
  letter-spacing: 0.04em;
  color: var(--mist);
}

.page-about .ab-partner__card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--silver);
}

.page-about .ab-partner__note {
  margin: clamp(24px, 4vw, 40px) 0 0;
  padding-top: 20px;
  border-top: 1px solid var(--ab-hair);
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--silver);
}

/* ---------- 运营地与联络 ---------- */

.page-about .ab-base {
  padding: var(--ab-section) 0 calc(var(--ab-section) * 0.7);
  background: var(--night);
  border-top: 1px solid var(--ab-hair);
}

.page-about .ab-base__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--ab-gap);
  margin-top: clamp(22px, 3.6vw, 38px);
  align-items: start;
}

.page-about .ab-base__text p {
  margin: 0 0 14px;
  max-width: 56ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--silver);
}

.page-about .ab-base__list {
  margin: 0;
  border-top: 1px solid var(--ab-hair);
}

.page-about .ab-base__row {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr);
  gap: 12px;
  padding: 13px 0;
  border-bottom: 1px solid var(--ab-hair);
}

.page-about .ab-base__row dt {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--silver);
  padding-top: 2px;
}

.page-about .ab-base__row dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.65;
  color: var(--mist);
  word-break: break-word;
}

.page-about .ab-base__row dd a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid var(--lime-dim);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

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

.page-about .ab-base__cta {
  margin-top: clamp(28px, 4.5vw, 48px);
  padding-top: 24px;
  border-top: 1px solid var(--ab-hair);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.page-about .ab-base__cta p {
  flex: 1 1 100%;
  margin: 0 0 4px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--silver);
}

/* ---------- 响应式 ---------- */

@media (min-width: 760px) {
  .page-about .ab-team__bar {
    grid-template-columns: 9fr 6fr 5fr 4fr;
  }

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

@media (min-width: 900px) {
  .page-about .ab-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(26px, 3.4vw, 52px);
  }

  .page-about .ab-chron__item {
    grid-template-columns: 132px minmax(0, 1fr);
    gap: clamp(22px, 3vw, 46px);
  }

  .page-about .ab-chron__scale {
    align-items: flex-start;
  }

  .page-about .ab-chron__num {
    font-size: 15px;
  }

  .page-about .ab-chron__body {
    padding-left: clamp(20px, 2.6vw, 36px);
  }

  .page-about .ab-league__grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    gap: clamp(22px, 3vw, 44px);
  }

  .page-about .ab-league__lead {
    grid-column: 1;
  }

  .page-about .ab-league__figure {
    grid-column: 2;
  }

  .page-about .ab-league__tags {
    grid-column: 1 / -1;
  }

  .page-about .ab-flow__grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    gap: clamp(22px, 3vw, 44px);
  }

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

  .page-about .ab-base__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(24px, 3vw, 48px);
  }
}

@media (min-width: 1180px) {
  .page-about .ab-hero h1 {
    max-width: 15ch;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-about .ab-partner__card,
  .page-about .ab-team__seg,
  .page-about .ab-tag > summary,
  .page-about .ab-base__row dd a {
    transition: none;
  }

  .page-about .ab-partner__card:hover {
    transform: none;
  }
}
<<<END>>>