.page-about {
  display: block;
  background: var(--ink-950);
  color: var(--mist-200);
}

/* ---------- 首屏 ---------- */
.page-about .ab-hero {
  position: relative;
  padding-block: clamp(108px, 16vw, 170px) clamp(44px, 6vw, 76px);
  overflow: hidden;
}
.page-about .ab-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(90% 70% at 88% -10%, rgba(217, 246, 63, .13), transparent 62%),
    linear-gradient(152deg, var(--ink-900) 0%, var(--ink-950) 70%);
  clip-path: polygon(0 0, 100% 0, 100% 72%, 0 100%);
  pointer-events: none;
}
.page-about .ab-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(32px, 6vw, 60px);
  grid-template-columns: minmax(0, 1fr);
  align-items: end;
}
@media (min-width: 940px) {
  .page-about .ab-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
  }
}
.page-about .ab-crumb {
  margin: 16px 0 0;
}
.page-about .ab-crumb .breadcrumb {
  font-size: 13px;
}
.page-about .ab-hero h1 {
  margin: 18px 0 0;
  font-size: clamp(34px, 7.6vw, 72px);
  line-height: 1.04;
  color: var(--paper-50);
  max-width: 17ch;
}
.page-about .ab-hero__lede {
  margin: 22px 0 0;
  max-width: 56ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  color: var(--mist-200);
}
.page-about .ab-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}
.page-about .ab-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  align-content: end;
}
.page-about .ab-stat {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 16px 16px 18px;
  border: 1px solid var(--ink-700);
  border-radius: var(--radius-md);
  background: rgba(11, 51, 42, .62);
}
@media (min-width: 560px) {
  .page-about .ab-stat--offset {
    margin-top: 24px;
  }
}
.page-about .ab-stat__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(30px, 5vw, 44px);
  font-weight: 700;
  line-height: 1;
  color: var(--lime-500);
}
.page-about .ab-stat__lab {
  font-size: 13px;
  line-height: 1.6;
  color: var(--mist-200);
}

/* ---------- 区块标题 ---------- */
.page-about .ab-head {
  max-width: 62ch;
  margin-bottom: clamp(28px, 4vw, 48px);
}
.page-about .ab-head h2 {
  margin: 14px 0 0;
  font-size: clamp(26px, 4.4vw, 46px);
  line-height: 1.14;
  color: var(--paper-50);
}
.page-about .ab-head__note {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist-200);
  opacity: .86;
}

/* ---------- 赛季沿革 ---------- */
.page-about .ab-track__layout {
  display: grid;
  gap: clamp(28px, 5vw, 56px);
  grid-template-columns: minmax(0, 1fr);
}
@media (min-width: 980px) {
  .page-about .ab-track__layout {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
  }
  .page-about .ab-track__figure {
    position: sticky;
    top: 112px;
    align-self: start;
  }
}
.page-about .ab-timeline {
  position: relative;
}
.page-about .ab-tl-item {
  position: relative;
  padding: 0 0 clamp(30px, 4vw, 46px) clamp(24px, 4vw, 34px);
  border-left: 1px solid var(--ink-700);
  outline: none;
}
.page-about .ab-tl-item:last-child {
  padding-bottom: 0;
}
.page-about .ab-tl-item::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 8px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--amber-500);
  transition: background .22s var(--ease), box-shadow .22s var(--ease), transform .22s var(--ease);
}
.page-about .ab-tl-item:hover::before,
.page-about .ab-tl-item:focus-visible::before {
  background: var(--lime-500);
  transform: scale(1.4);
  box-shadow: 0 0 0 5px rgba(217, 246, 63, .16);
}
.page-about .ab-tl-year {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .14em;
  color: var(--amber-300);
}
.page-about .ab-tl-title {
  margin: 8px 0 0;
  font-size: clamp(19px, 2.4vw, 24px);
  color: var(--paper-50);
}
.page-about .ab-tl-sum {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist-200);
}
.page-about .ab-tl-more {
  margin: 12px 0 0;
  padding-top: 10px;
  border-top: 1px dashed var(--ink-700);
  font-size: 14px;
  line-height: 1.8;
  color: var(--lime-300);
}
@media (hover: hover) and (min-width: 980px) {
  .page-about .ab-tl-more {
    max-height: 0;
    margin-top: 0;
    padding-top: 0;
    opacity: 0;
    overflow: hidden;
    border-top-color: transparent;
    transition: max-height .32s var(--ease), opacity .26s var(--ease), margin-top .32s var(--ease), padding-top .32s var(--ease);
  }
  .page-about .ab-tl-item:hover .ab-tl-more,
  .page-about .ab-tl-item:focus-visible .ab-tl-more {
    max-height: 220px;
    margin-top: 12px;
    padding-top: 10px;
    opacity: 1;
    border-top-color: var(--ink-700);
  }
}

/* ---------- 图片通用 ---------- */
.page-about .ab-fig {
  margin: 0;
}
.page-about .ab-fig img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--ink-700);
  object-fit: cover;
}
.page-about .ab-fig figcaption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--mist-200);
  opacity: .72;
}

/* ---------- 全宽窄带 ---------- */
.page-about .ab-band {
  margin: 0;
  padding-block: clamp(36px, 6vw, 68px);
}
.page-about .ab-band__frame {
  position: relative;
}
.page-about .ab-band__frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: clamp(200px, 32vw, 380px);
  object-fit: cover;
}
.page-about .ab-band__frame::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 58%;
  background: linear-gradient(180deg, transparent, rgba(6, 32, 25, .92));
  pointer-events: none;
}
.page-about .ab-band__frame figcaption {
  position: absolute;
  left: clamp(16px, 4vw, 44px);
  right: clamp(16px, 4vw, 44px);
  bottom: clamp(16px, 3vw, 30px);
  z-index: 1;
  max-width: 36ch;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--paper-50);
}

/* ---------- 团队构成 ---------- */
.page-about .ab-roster {
  display: grid;
  gap: 14px;
  grid-template-columns: minmax(0, 1fr);
}
@media (min-width: 720px) {
  .page-about .ab-roster {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (min-width: 1100px) {
  .page-about .ab-roster {
    grid-template-columns: 1.3fr 1fr 1.15fr 1fr;
    align-items: start;
  }
}
.page-about .ab-unit {
  border: 1px solid var(--ink-700);
  border-top: 3px solid var(--lime-500);
  border-radius: var(--radius-md);
  background: rgba(6, 32, 25, .6);
  overflow: hidden;
  transition: background .22s var(--ease), border-color .22s var(--ease);
}
.page-about .ab-unit:nth-child(2) {
  border-top-color: var(--amber-500);
}
.page-about .ab-unit:nth-child(3) {
  border-top-color: var(--lime-300);
}
.page-about .ab-unit:nth-child(4) {
  border-top-color: var(--amber-300);
}
.page-about .ab-unit[open] {
  background: rgba(11, 51, 42, .88);
}
.page-about .ab-unit__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 18px 18px 16px;
  cursor: pointer;
  list-style: none;
}
.page-about .ab-unit__head::-webkit-details-marker {
  display: none;
}
.page-about .ab-unit__head::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1;
  color: var(--amber-500);
}
.page-about .ab-unit[open] .ab-unit__head::after {
  content: "–";
}
.page-about .ab-unit__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(30px, 5vw, 42px);
  font-weight: 700;
  line-height: 1;
  color: var(--lime-500);
}
.page-about .ab-unit__name {
  font-size: 15px;
  font-weight: 700;
  color: var(--paper-50);
}
.page-about .ab-unit__body {
  margin: 0;
  padding: 0 18px 20px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--mist-200);
}
.page-about .ab-team__note {
  margin: 24px 0 0;
  padding-left: 16px;
  border-left: 3px solid var(--amber-500);
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--mist-200);
}

/* ---------- 生产流程 ---------- */
.page-about .ab-flow__top {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  grid-template-columns: minmax(0, 1fr);
  margin-bottom: clamp(30px, 5vw, 52px);
}
@media (min-width: 900px) {
  .page-about .ab-flow__top {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    align-items: center;
  }
}
.page-about .ab-flow__intro h3 {
  margin: 0;
  font-size: clamp(20px, 2.6vw, 27px);
  color: var(--paper-50);
}
.page-about .ab-flow__intro p {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.9;
  color: var(--mist-200);
}
.page-about .ab-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
  grid-template-columns: minmax(0, 1fr);
}
@media (min-width: 680px) {
  .page-about .ab-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (min-width: 1080px) {
  .page-about .ab-steps {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 0;
  }
}
.page-about .ab-step {
  padding: 20px 16px 20px;
  border-top: 1px solid var(--ink-700);
  background: linear-gradient(180deg, rgba(11, 51, 42, .55), rgba(6, 32, 25, 0));
  transition: border-color .22s var(--ease), background .22s var(--ease);
}
@media (min-width: 1080px) {
  .page-about .ab-step {
    padding-right: 20px;
  }
}
.page-about .ab-step:hover {
  border-top-color: var(--lime-500);
  background: linear-gradient(180deg, rgba(18, 96, 74, .5), rgba(6, 32, 25, 0));
}
.page-about .ab-step__no {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--amber-500);
}
.page-about .ab-step__name {
  margin: 10px 0 0;
  font-size: 17px;
  color: var(--paper-50);
}
.page-about .ab-step__text {
  margin: 8px 0 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--mist-200);
}

/* ---------- 数据确认 ---------- */
.page-about .ab-check__grid {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
  grid-template-columns: minmax(0, 1fr);
}
@media (min-width: 940px) {
  .page-about .ab-check__grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
    align-items: start;
  }
}
.page-about .ab-check__grid h2 {
  margin: 14px 0 0;
  font-size: clamp(25px, 3.8vw, 40px);
  line-height: 1.16;
  color: var(--paper-50);
}
.page-about .ab-check__lede {
  margin: 16px 0 0;
  font-size: 15px;
  line-height: 1.9;
  color: var(--mist-200);
}
.page-about .ab-check__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
  counter-reset: abcheck;
}
.page-about .ab-check__list li {
  position: relative;
  counter-increment: abcheck;
  padding: 16px 18px 16px 62px;
  border: 1px solid var(--ink-700);
  border-radius: var(--radius-md);
  background: rgba(6, 32, 25, .5);
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--mist-200);
}
.page-about .ab-check__list li::before {
  content: counter(abcheck, decimal-leading-zero);
  position: absolute;
  left: 18px;
  top: 17px;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: .1em;
  color: var(--amber-500);
}

/* ---------- 赛季覆盖 ---------- */
.page-about .ab-scope__bar {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  border: 1px solid var(--ink-700);
  border-radius: var(--radius-lg);
  background: var(--ink-700);
  overflow: hidden;
}
@media (min-width: 780px) {
  .page-about .ab-scope__bar {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}
.page-about .ab-scope__cell {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: clamp(18px, 3vw, 28px);
  background: var(--ink-950);
}
.page-about .ab-scope__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(30px, 5vw, 48px);
  font-weight: 700;
  line-height: 1;
  color: var(--lime-500);
}
.page-about .ab-scope__lab {
  font-size: 13px;
  color: var(--mist-200);
}
.page-about .ab-scope__notes {
  display: grid;
  gap: 16px;
  margin-top: 24px;
  grid-template-columns: minmax(0, 1fr);
}
@media (min-width: 820px) {
  .page-about .ab-scope__notes {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
.page-about .ab-scope__notes p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.9;
  color: var(--mist-200);
}

/* ---------- 栏目体系 ---------- */
.page-about .ab-channels__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
  grid-template-columns: minmax(0, 1fr);
}
@media (min-width: 700px) {
  .page-about .ab-channels__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (min-width: 1080px) {
  .page-about .ab-channels__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}
.page-about .ab-channel {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 22px 20px 20px;
  border: 1px solid var(--ink-700);
  border-radius: var(--radius-md);
  background: linear-gradient(160deg, rgba(18, 96, 74, .3), rgba(6, 32, 25, .18));
  transition: border-color .22s var(--ease), transform .22s var(--ease);
}
.page-about .ab-channel:hover {
  border-color: var(--lime-500);
  transform: translateY(-3px);
}
.page-about .ab-channel__name {
  margin: 0;
  font-size: 19px;
  color: var(--paper-50);
}
.page-about .ab-channel__text {
  flex: 1;
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--mist-200);
}
.page-about .ab-channel__link {
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--lime-500);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .2s var(--ease);
}
.page-about .ab-channel__link:hover,
.page-about .ab-channel__link:focus-visible {
  border-bottom-color: var(--lime-500);
}

/* ---------- 合作与加入 ---------- */
.page-about .ab-join__grid {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
  grid-template-columns: minmax(0, 1fr);
}
@media (min-width: 940px) {
  .page-about .ab-join__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    align-items: start;
  }
}
.page-about .ab-join__lead h2 {
  margin: 14px 0 0;
  font-size: clamp(25px, 3.8vw, 40px);
  line-height: 1.16;
  color: var(--paper-50);
}
.page-about .ab-join__text {
  margin: 16px 0 0;
  font-size: 15px;
  line-height: 1.9;
  color: var(--mist-200);
}
.page-about .ab-join__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}
.page-about .ab-join__panel {
  padding: clamp(20px, 3vw, 28px);
  border: 1px solid var(--ink-700);
  border-radius: var(--radius-lg);
  background: rgba(11, 51, 42, .58);
}
.page-about .ab-join__panel h3 {
  margin: 0 0 16px;
  font-size: 17px;
  color: var(--paper-50);
}
.page-about .ab-join__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}
.page-about .ab-join__list li {
  padding-top: 14px;
  border-top: 1px dashed var(--ink-700);
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist-200);
  overflow-wrap: anywhere;
}
.page-about .ab-join__list li:first-child {
  padding-top: 0;
  border-top: 0;
}
.page-about .ab-join__list strong {
  display: block;
  margin-bottom: 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  font-weight: 400;
  color: var(--amber-300);
}

/* ---------- 动效退让 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-about .ab-tl-item::before,
  .page-about .ab-channel,
  .page-about .ab-channel__link,
  .page-about .ab-step {
    transition: none;
  }
  .page-about .ab-channel:hover {
    transform: none;
  }
}
<<<END>>>