.page-about {
  --ab-gap: clamp(44px, 6vw, 88px);
  --ab-inner: min(100%, 780px);
  --ab-card-r: var(--r-lg);
  position: relative;
  isolation: isolate;
}

.page-about .ab-wrap {
  display: block;
}

.page-about .crumbs {
  margin-top: 8px;
}

/* ---------- 首屏 ---------- */
.page-about .ab-hero {
  position: relative;
  display: grid;
  gap: 30px;
  padding: clamp(26px, 4.5vw, 52px) 0 clamp(38px, 6vw, 76px);
  border-bottom: 1px solid var(--line);
}

.page-about .ab-hero::before {
  content: "";
  position: absolute;
  inset: -60px -30vw auto -40px;
  height: 420px;
  z-index: -1;
  background:
    radial-gradient(680px 300px at 12% 20%, rgba(53, 224, 190, .13), transparent 68%),
    radial-gradient(460px 260px at 86% 6%, rgba(255, 180, 58, .07), transparent 70%);
  pointer-events: none;
}

.page-about .ab-hero__head {
  max-width: var(--ab-inner);
}

.page-about .ab-hero__head .lead {
  margin-top: 18px;
  font-size: clamp(16px, 1.6vw, 18px);
}

.page-about .h-display {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-stretch: condensed;
  letter-spacing: -.02em;
  line-height: 1.02;
  font-size: clamp(38px, 7.2vw, 76px);
  color: var(--paper);
}

.page-about .ab-hero__stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 10px;
  margin-top: 26px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.page-about .ab-hero__stats .stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-about .ab-hero__stats .stat__k {
  font-size: 13px;
  color: var(--haze);
  letter-spacing: .04em;
}

.page-about .ab-hero__stats .stat__v {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(18px, 2.4vw, 24px);
  color: var(--paper);
  letter-spacing: -.01em;
}

.page-about .ab-hero__stats .stat--mint .stat__v {
  color: var(--mint);
}

.page-about .ab-hero__fig {
  margin: 0;
  position: relative;
  border-radius: var(--r-xl);
  overflow: hidden;
  background: linear-gradient(150deg, var(--ink-700), var(--ink-800) 62%);
  border: 1px solid var(--line);
}

.page-about .ab-hero__fig::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(140, 242, 220, .07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(140, 242, 220, .07) 1px, transparent 1px);
  background-size: 34px 34px;
  mix-blend-mode: screen;
  pointer-events: none;
}

.page-about .ab-hero__fig .media__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  filter: saturate(.72) contrast(1.06);
}

.page-about .ab-hero__fig .media__cap {
  padding: 12px 18px 16px;
  font-size: 13px;
  color: var(--haze);
  border-top: 1px solid var(--line);
}

/* ---------- 我们做什么 ---------- */
.page-about .ab-intro__body {
  margin-top: 14px;
}

.page-about .ab-intro__cols {
  display: grid;
  gap: 18px;
  margin-top: 20px;
}

.page-about .ab-intro__cols p {
  max-width: 66ch;
}

/* ---------- 六个编辑组 ---------- */
.page-about .ab-teams .section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 12px;
}

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

.page-about .ab-teams__lead {
  max-width: 62ch;
  margin: 18px 0 26px;
  color: var(--haze);
}

.page-about .ab-teams__grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
  grid-template-columns: 1fr;
}

.page-about .ab-team {
  position: relative;
  padding: 20px 20px 22px;
  border-radius: var(--ab-card-r);
  background: linear-gradient(180deg, rgba(18, 51, 42, .78), rgba(11, 36, 29, .9));
  border: 1px solid var(--line);
  outline: none;
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-about .ab-team::before {
  content: "";
  position: absolute;
  left: 20px;
  top: 0;
  width: 30px;
  height: 2px;
  background: var(--mint);
  opacity: .45;
  transition: width var(--dur) var(--ease), opacity var(--dur) var(--ease);
}

.page-about .ab-team:hover,
.page-about .ab-team:focus-visible {
  transform: translateY(-4px);
  border-color: var(--line-strong);
}

.page-about .ab-team:hover::before,
.page-about .ab-team:focus-visible::before {
  width: 62px;
  opacity: 1;
}

.page-about .ab-team__t {
  margin: 12px 0 8px;
  font-size: 18px;
  line-height: 1.35;
  color: var(--paper);
  font-weight: 700;
}

.page-about .ab-team__d {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--haze);
}

/* ---------- 观察员 ---------- */
.page-about .ab-scouts__grid {
  display: grid;
  gap: 30px;
}

.page-about .ab-scouts__figure {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 26px 22px;
  border-radius: var(--r-xl);
  background:
    radial-gradient(320px 200px at 20% 0%, rgba(53, 224, 190, .16), transparent 70%),
    linear-gradient(160deg, var(--ink-700), var(--ink-800));
  border: 1px solid var(--line);
}

.page-about .ab-scouts__big {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(66px, 15vw, 116px);
  line-height: .9;
  letter-spacing: -.04em;
  color: var(--mint);
}

.page-about .ab-scouts__lbl {
  font-size: 15px;
  line-height: 1.6;
  color: var(--paper);
  max-width: 24ch;
}

.page-about .ab-scouts__sub {
  margin-top: 8px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  font-size: 14px;
  color: var(--amber);
}

.page-about .ab-scouts__txt p {
  max-width: 64ch;
}

.page-about .ab-scouts__txt .h-section {
  margin: 6px 0 16px;
}

.page-about .ab-quote {
  margin: 24px 0 0;
  padding: 4px 0 4px 22px;
  border-left: 3px solid var(--mint);
  font-size: clamp(16px, 2vw, 19px);
  line-height: 1.75;
  color: var(--paper);
}

/* ---------- 核对流程 ---------- */
.page-about .ab-flow .section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 12px;
}

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

.page-about .ab-flow__grid {
  display: grid;
  gap: 28px;
  margin-top: 26px;
}

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

.page-about .ab-flow__step {
  position: relative;
  padding: 18px 0 18px 62px;
  border-bottom: 1px solid var(--line);
}

.page-about .ab-flow__step:last-child {
  border-bottom: 0;
}

.page-about .ab-flow__idx {
  position: absolute;
  left: 0;
  top: 20px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 15px;
  color: var(--mint);
  letter-spacing: .04em;
}

.page-about .ab-flow__idx::after {
  content: "";
  position: absolute;
  left: 26px;
  top: 9px;
  width: 22px;
  height: 1px;
  background: var(--line-strong);
}

.page-about .ab-flow__step .ab-sub {
  margin: 0 0 8px;
  font-size: 19px;
  color: var(--paper);
  font-weight: 700;
}

.page-about .ab-flow__step p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--haze);
}

.page-about .ab-flow__fig {
  margin: 0;
  border-radius: var(--r-xl);
  overflow: hidden;
  border: 1px solid var(--line);
  background: linear-gradient(160deg, var(--ink-800), var(--ink-700));
}

.page-about .ab-flow__fig .media__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 25 / 14;
  object-fit: cover;
  filter: saturate(.7) contrast(1.05);
}

.page-about .ab-flow__fig .media__cap {
  padding: 12px 18px 16px;
  font-size: 13px;
  color: var(--haze);
  border-top: 1px solid var(--line);
}

/* ---------- 赛季归档 ---------- */
.page-about .ab-seasons__lead {
  max-width: 66ch;
  margin: 16px 0 26px;
  color: var(--haze);
}

.page-about .ab-seasons__band {
  position: relative;
  padding: 8px 0 0;
  border-top: 1px solid var(--line);
}

.page-about .ab-seasons__band svg {
  display: block;
  width: 100%;
  height: clamp(70px, 12vw, 110px);
  overflow: visible;
}

.page-about .ab-seasons__ticks {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 4px;
  margin-top: -10px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(11px, 1.6vw, 14px);
  color: var(--haze);
  text-align: center;
  letter-spacing: .02em;
}

.page-about .ab-seasons__switch {
  position: relative;
  margin-top: 26px;
}

.page-about .ab-seasons__radio {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-about .ab-seasons__tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.page-about .ab-season-tab {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 9px 16px;
  border-radius: var(--pill);
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--haze);
  font-size: 13px;
  cursor: pointer;
  transition: color var(--dur) var(--ease), background-color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .ab-season-tab .num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 14px;
  letter-spacing: .01em;
}

.page-about .ab-season-tab__l {
  font-size: 12px;
  letter-spacing: .08em;
}

.page-about .ab-season-tab:hover {
  color: var(--paper);
  border-color: var(--mint-soft);
}

.page-about .ab-season-tab:focus-within {
  outline: 2px solid var(--mint);
  outline-offset: 2px;
}

.page-about .ab-seasons__radio:focus-visible ~ .ab-seasons__tabs .ab-season-tab {
  outline: none;
}

.page-about .ab-seasons__panels {
  position: relative;
  min-height: 132px;
  padding: 22px 22px 24px;
  border-radius: var(--ab-card-r);
  background: linear-gradient(180deg, rgba(18, 51, 42, .7), rgba(11, 36, 29, .88));
  border: 1px solid var(--line);
}

.page-about .ab-season-panel {
  display: none;
  animation: ab-fade 240ms var(--ease) both;
}

.page-about .ab-season-panel .ab-sub {
  margin: 0 0 10px;
  font-size: 19px;
  color: var(--paper);
  font-weight: 700;
}

.page-about .ab-season-panel p {
  margin: 0;
  max-width: 68ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--haze);
}

.page-about #ab-sea-1:checked ~ .ab-seasons__tabs label[for="ab-sea-1"],
.page-about #ab-sea-2:checked ~ .ab-seasons__tabs label[for="ab-sea-2"],
.page-about #ab-sea-3:checked ~ .ab-seasons__tabs label[for="ab-sea-3"],
.page-about #ab-sea-4:checked ~ .ab-seasons__tabs label[for="ab-sea-4"],
.page-about #ab-sea-5:checked ~ .ab-seasons__tabs label[for="ab-sea-5"] {
  background: var(--mint);
  border-color: var(--mint);
  color: var(--on-mint);
}

.page-about #ab-sea-1:checked ~ .ab-seasons__panels .ab-season-panel:nth-child(1),
.page-about #ab-sea-2:checked ~ .ab-seasons__panels .ab-season-panel:nth-child(2),
.page-about #ab-sea-3:checked ~ .ab-seasons__panels .ab-season-panel:nth-child(3),
.page-about #ab-sea-4:checked ~ .ab-seasons__panels .ab-season-panel:nth-child(4),
.page-about #ab-sea-5:checked ~ .ab-seasons__panels .ab-season-panel:nth-child(5) {
  display: block;
}

@keyframes ab-fade {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: none; }
}

/* ---------- 更新值守 ---------- */
.page-about .ab-duty__grid {
  display: grid;
  gap: 28px;
}

.page-about .ab-duty__txt .h-section {
  margin: 6px 0 16px;
}

.page-about .ab-duty__txt p {
  max-width: 62ch;
}

.page-about .ab-duty__n {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 1.06em;
  color: var(--amber);
  padding: 0 2px;
}

.page-about .ab-duty__cards {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .ab-duty__card {
  padding: 18px 20px 20px;
  border-radius: var(--ab-card-r);
  background: rgba(6, 23, 19, .58);
  border: 1px solid var(--line);
  border-left: 2px solid var(--mint-soft);
}

.page-about .ab-duty__v {
  margin: 12px 0 4px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(20px, 3vw, 26px);
  color: var(--paper);
  letter-spacing: -.01em;
}

.page-about .ab-duty__d {
  margin: 0;
  font-size: 14px;
  color: var(--haze);
  line-height: 1.65;
}

/* ---------- 合作与联络 ---------- */
.page-about .ab-collab__inner {
  padding: clamp(26px, 4.5vw, 46px);
  border-radius: var(--r-xl);
  background:
    radial-gradient(520px 260px at 88% 0%, rgba(53, 224, 190, .12), transparent 66%),
    linear-gradient(150deg, var(--ink-700), var(--ink-800) 72%);
  border: 1px solid var(--line);
}

.page-about .ab-collab__lead {
  margin: 16px 0 0;
  max-width: 62ch;
}

.page-about .ab-collab__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

.page-about .ab-collab__note {
  margin: 20px 0 0;
  max-width: 68ch;
}

.page-about .ab-collab__note a {
  color: var(--mint-soft);
  text-decoration: none;
  border-bottom: 1px solid var(--line-strong);
}

.page-about .ab-collab__note a:hover,
.page-about .ab-collab__note a:focus-visible {
  color: var(--mint);
  border-bottom-color: var(--mint);
}

/* ---------- 响应式 ---------- */
@media (min-width: 600px) {
  .page-about .ab-intro__cols {
    grid-template-columns: 1fr;
    gap: 20px;
  }

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

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

@media (min-width: 900px) {
  .page-about .ab-hero {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
    align-items: start;
    gap: clamp(34px, 4.5vw, 60px);
  }

  .page-about .ab-hero__head {
    max-width: none;
  }

  .page-about .ab-flow__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, .82fr);
    align-items: start;
    gap: clamp(28px, 4vw, 52px);
  }

  .page-about .ab-flow__fig {
    position: sticky;
    top: 28px;
  }

  .page-about .ab-scouts__grid {
    grid-template-columns: minmax(0, .72fr) minmax(0, 1.28fr);
    align-items: start;
    gap: clamp(30px, 4.5vw, 64px);
  }

  .page-about .ab-duty__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    align-items: start;
    gap: clamp(30px, 4.5vw, 60px);
  }

  .page-about .ab-duty__cards {
    grid-template-columns: 1fr;
  }
}

@media (min-width: 1080px) {
  .page-about .ab-teams__grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-about .ab-intro__cols {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(28px, 4vw, 56px);
  }

  .page-about .ab-intro__cols p:last-child {
    grid-column: 1 / -1;
    max-width: 72ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .ab-team,
  .page-about .ab-team::before,
  .page-about .ab-season-tab {
    transition: none;
  }

  .page-about .ab-season-panel {
    animation: none;
  }

  .page-about .ab-team:hover,
  .page-about .ab-team:focus-visible {
    transform: none;
  }
}