.page-about {
  --pg-gap: 2px;
  --pg-heavy: 3px;
}

.page-about .ab-hero {
  padding-top: 48px;
  padding-bottom: 8px;
}

.page-about .ab-hero__grid {
  align-items: end;
  row-gap: 32px;
}

.page-about .ab-hero__title {
  font-size: clamp(34px, 6.4vw, 78px);
  line-height: 1.04;
  letter-spacing: -0.03em;
  font-weight: 800;
  margin: 14px 0 20px;
  transform: skewX(-2deg);
}

.page-about .ab-hero__lead {
  max-width: 34em;
  color: var(--ab-muted);
}

.page-about .ab-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-about .ab-hero__frame {
  border-width: var(--pg-heavy);
  box-shadow: var(--ab-shadow);
  position: relative;
}

.page-about .ab-hero__frame::before {
  content: "";
  position: absolute;
  inset: 8px 8px auto auto;
  width: 46px;
  height: 46px;
  border-top: 2px solid var(--ab-cyan);
  border-right: 2px solid var(--ab-cyan);
  pointer-events: none;
  opacity: .85;
}

.page-about .ab-hero__facts {
  list-style: none;
  margin: 44px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  border-top: 1px solid var(--ab-line);
}

.page-about .ab-hero__fact {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-areas:
    "num unit"
    "num label";
  align-items: baseline;
  column-gap: 10px;
  padding: 16px 4px;
  border-bottom: 1px solid var(--ab-line);
  border-left: 3px solid transparent;
  transition: border-left-color .2s ease, background-color .2s ease;
}

.page-about .ab-hero__fact:hover {
  border-left-color: var(--ab-cyan);
  background: var(--ab-cyan-06);
}

.page-about .ab-hero__num {
  grid-area: num;
  font-family: var(--ab-font-mono);
  font-size: clamp(26px, 4vw, 38px);
  font-weight: 700;
  letter-spacing: .01em;
  color: var(--ab-ink);
  text-shadow: 0 0 10px var(--ab-cyan-35);
  align-self: center;
}

.page-about .ab-hero__fact .ab-stat__unit {
  grid-area: unit;
  font-size: 14px;
  font-weight: 700;
  color: var(--ab-cyan);
}

.page-about .ab-hero__fact .ab-stat__label {
  grid-area: label;
  font-size: 13px;
  color: var(--ab-muted);
  line-height: 1.5;
}

/* ---- 时间轴 ---- */
.page-about .ab-title--sm {
  font-size: clamp(26px, 4.2vw, 46px);
  line-height: 1.12;
  letter-spacing: -0.02em;
  transform: skewX(-2deg);
  margin: 10px 0 16px;
}

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

.page-about .ab-timeline__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px 28px;
  padding: 26px 0;
  border-top: var(--pg-heavy) solid var(--ab-line);
  position: relative;
}

.page-about .ab-timeline__row:last-child {
  border-bottom: var(--pg-heavy) solid var(--ab-line);
}

.page-about .ab-timeline__row::after {
  content: "";
  position: absolute;
  top: -3px;
  left: 0;
  width: 0;
  height: 3px;
  background: var(--ab-cyan);
  transition: width .45s ease;
}

.page-about .ab-timeline__row:hover::after,
.page-about .ab-timeline__row:focus-within::after {
  width: 64px;
}

.page-about .ab-timeline__year {
  font-family: var(--ab-font-mono);
  font-size: clamp(40px, 9vw, 84px);
  font-weight: 800;
  line-height: .9;
  letter-spacing: -0.03em;
  color: transparent;
  -webkit-text-stroke: 1px var(--ab-line);
  text-stroke: 1px var(--ab-line);
  transition: -webkit-text-stroke-color .25s ease, color .25s ease;
}

.page-about .ab-timeline__row:hover .ab-timeline__year {
  color: var(--ab-cyan-12);
  -webkit-text-stroke-color: var(--ab-cyan);
}

.page-about .ab-timeline__title {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 4px 0 10px;
  color: var(--ab-ink);
}

.page-about .ab-timeline__body p {
  color: var(--ab-muted);
  max-width: 36em;
  margin: 0 0 10px;
}

.page-about .ab-timeline__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--ab-muted);
}

/* ---- 团队 ---- */
.page-about .ab-section__head--flush {
  max-width: 40em;
}

.page-about .ab-team__grid {
  align-items: start;
  row-gap: 34px;
}

.page-about .ab-team__matrix {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--pg-gap);
  margin-top: 28px;
  border: var(--pg-gap) solid var(--ab-line);
  background: var(--ab-line);
}

.page-about .ab-team__cell {
  background: var(--ab-board);
  padding: 20px 18px 22px;
  border-left: 3px solid transparent;
  transition: border-left-color .2s ease, background-color .2s ease, transform .2s ease;
  outline: none;
}

.page-about .ab-team__cell:hover,
.page-about .ab-team__cell:focus-visible {
  border-left-color: var(--ab-cyan);
  background: #0F1826;
  transform: translateY(-2px);
}

.page-about .ab-team__count {
  display: block;
  font-family: var(--ab-font-mono);
  font-size: 34px;
  font-weight: 700;
  color: var(--ab-cyan);
  text-shadow: 0 0 12px var(--ab-cyan-35);
  line-height: 1;
}

.page-about .ab-team__role {
  font-size: 17px;
  font-weight: 700;
  margin: 8px 0 8px;
  color: var(--ab-ink);
}

.page-about .ab-team__desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--ab-muted);
  margin: 0;
}

.page-about .ab-team__media {
  border-width: var(--pg-heavy);
  box-shadow: var(--ab-shadow);
}

.page-about .ab-team__note {
  margin: 16px 0 0;
  padding-left: 14px;
  border-left: 3px solid var(--ab-orange);
  font-size: 14px;
  line-height: 1.75;
  color: var(--ab-muted);
}

/* ---- 赛区覆盖 ---- */
.page-about .ab-coverage__grid {
  row-gap: 34px;
  align-items: start;
}

.page-about .ab-coverage__media {
  border-width: var(--pg-heavy);
  box-shadow: var(--ab-shadow);
}

.page-about .ab-coverage__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .ab-coverage__item {
  padding: 16px 0;
  border-bottom: 1px solid var(--ab-line);
}

.page-about .ab-coverage__item:first-child {
  border-top: 1px solid var(--ab-line);
}

.page-about .ab-coverage__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
}

.page-about .ab-coverage__k {
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--ab-muted);
  text-transform: uppercase;
}

.page-about .ab-coverage__v {
  font-size: 14px;
  color: var(--ab-ink);
}

.page-about .ab-coverage__v .ab-num {
  font-family: var(--ab-font-mono);
  font-size: 24px;
  font-weight: 700;
  color: var(--ab-ink);
  text-shadow: 0 0 10px var(--ab-cyan-35);
  margin-right: 4px;
}

.page-about .ab-coverage__bar {
  height: 6px;
  background: var(--ab-line);
  position: relative;
  overflow: hidden;
}

.page-about .ab-coverage__fill {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--ab-grad-a), var(--ab-cyan));
}

.page-about .ab-coverage__fill--orange {
  background: linear-gradient(90deg, var(--ab-orange), #FFB37A);
}

.page-about .ab-coverage__fill--gold {
  background: linear-gradient(90deg, var(--ab-gold), #FFE3A0);
}

.page-about .ab-coverage__note {
  margin: 8px 0 0;
  font-size: 13px;
  color: var(--ab-muted);
  line-height: 1.6;
}

.page-about .ab-coverage__partners {
  margin-top: 26px;
  padding: 20px 18px;
  background: var(--ab-board);
  border: 1px solid var(--ab-line);
  border-left: 3px solid var(--ab-cyan);
}

.page-about .ab-coverage__subtitle {
  font-size: 16px;
  font-weight: 700;
  color: var(--ab-ink);
  margin: 0 0 12px;
}

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

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

/* ---- 数据流程 ---- */
.page-about .ab-flow__track {
  list-style: none;
  margin: 36px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--pg-gap);
  background: var(--ab-line);
  border: var(--pg-gap) solid var(--ab-line);
}

.page-about .ab-flow__step {
  background: var(--ab-board);
  padding: 22px 18px 24px;
  position: relative;
}

.page-about .ab-flow__idx {
  font-family: var(--ab-font-mono);
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--ab-cyan);
}

.page-about .ab-flow__name {
  font-size: 18px;
  font-weight: 700;
  color: var(--ab-ink);
  margin: 8px 0 10px;
}

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

.page-about .ab-flow__step p .ab-num {
  font-family: var(--ab-font-mono);
  font-size: 16px;
  font-weight: 700;
  color: var(--ab-ink);
  text-shadow: 0 0 8px var(--ab-cyan-35);
}

/* ---- 三类用户 ---- */
.page-about .ab-roles__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin-top: 34px;
}

.page-about .ab-roles__card {
  border-width: var(--pg-heavy);
  padding: 22px 18px 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-about .ab-roles__card--accent {
  border-color: var(--ab-cyan-35);
  box-shadow: 0 0 0 1px var(--ab-cyan-12), var(--ab-shadow);
}

.page-about .ab-roles__badge {
  align-self: flex-start;
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
  padding: 4px 10px;
  border: 1px solid var(--ab-line);
  color: var(--ab-muted);
}

.page-about .ab-roles__badge--cyan {
  border-color: var(--ab-cyan-35);
  color: var(--ab-cyan);
  background: var(--ab-cyan-06);
}

.page-about .ab-roles__badge--gold {
  border-color: rgba(243,194,76,.4);
  color: var(--ab-gold);
  background: rgba(243,194,76,.06);
}

.page-about .ab-roles__title {
  font-size: 19px;
  font-weight: 700;
  color: var(--ab-ink);
  margin: 0;
  letter-spacing: -0.01em;
}

.page-about .ab-roles__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-about .ab-roles__list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ab-muted);
}

.page-about .ab-roles__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 7px;
  height: 7px;
  background: var(--ab-cyan);
  clip-path: polygon(0 0, 100% 50%, 0 100%);
}

/* ---- 年度输出 ---- */
.page-about .ab-annual__grid {
  row-gap: 30px;
  align-items: start;
}

.page-about .ab-annual__grid p {
  color: var(--ab-muted);
  max-width: 34em;
}

.page-about .ab-annual__list {
  list-style: none;
  margin: 0 0 20px;
  padding: 0;
  border-top: 1px solid var(--ab-line);
}

.page-about .ab-annual__list li {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid var(--ab-line);
}

.page-about .ab-annual__k {
  font-size: 12px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ab-orange);
}

.page-about .ab-annual__v {
  font-size: 14px;
  line-height: 1.65;
  color: var(--ab-ink);
}

/* ---- 联系 ---- */
.page-about .ab-contact-cta__box {
  border: var(--pg-heavy) solid var(--ab-line);
  background: var(--ab-board);
  box-shadow: var(--ab-shadow);
  padding: 26px 20px 28px;
  display: grid;
  gap: 24px;
}

.page-about .ab-contact-cta__copy p {
  color: var(--ab-muted);
  max-width: 40em;
}

.page-about .ab-contact-cta__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
  background: var(--ab-line);
  border: 2px solid var(--ab-line);
}

.page-about .ab-contact-cta__list .ab-contact__item {
  background: var(--ab-void);
  padding: 14px;
  display: grid;
  gap: 6px;
}

.page-about .ab-contact-cta__list .ab-contact__k {
  font-size: 12px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ab-cyan);
}

.page-about .ab-contact-cta__list .ab-contact__v {
  font-size: 15px;
  line-height: 1.6;
  color: var(--ab-ink);
  word-break: break-word;
}

.page-about .ab-contact-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.page-about .ab-totop {
  position: fixed;
  right: 16px;
  bottom: 16px;
  z-index: 30;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: var(--ab-board);
  border: 2px solid var(--ab-line);
  color: var(--ab-ink);
  font-family: var(--ab-font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: opacity .25s ease, border-color .2s ease;
}

.page-about .ab-totop.is-visible {
  opacity: 1;
  pointer-events: auto;
}

.page-about .ab-totop:hover {
  border-color: var(--ab-cyan);
}

.page-about .ab-totop__arrow {
  color: var(--ab-cyan);
}

@media (min-width: 720px) {
  .page-about .ab-hero__facts {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-about .ab-hero__fact {
    padding: 20px 18px;
  }

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

  .page-about .ab-hero__fact:nth-child(odd) {
    border-left: none;
  }

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

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

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

  .page-about .ab-contact-cta__box {
    padding: 32px 28px 34px;
  }

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

  .page-about .ab-contact-cta__list .ab-contact__item:last-child {
    grid-column: 1 / -1;
  }
}

@media (min-width: 1080px) {
  .page-about .ab-hero {
    padding-top: 64px;
  }

  .page-about .ab-hero__facts {
    grid-template-columns: repeat(4, 1fr);
    margin-top: 56px;
  }

  .page-about .ab-hero__fact {
    border-bottom: none;
    border-right: 1px solid var(--ab-line);
  }

  .page-about .ab-hero__fact:last-child {
    border-right: none;
  }

  .page-about .ab-hero__fact:nth-child(odd) {
    border-left: 3px solid transparent;
  }

  .page-about .ab-timeline__row {
    grid-template-columns: 220px 1fr;
    align-items: start;
    padding: 34px 0;
  }

  .page-about .ab-timeline__year {
    position: sticky;
    top: calc(var(--ab-cmd-h) + var(--ab-strip-h) + 24px);
  }

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

  .page-about .ab-flow__track {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-about .ab-flow__step:not(:last-child)::after {
    content: "";
    position: absolute;
    right: -14px;
    top: 50%;
    width: 0;
    height: 0;
    border-top: 7px solid transparent;
    border-bottom: 7px solid transparent;
    border-left: 10px solid var(--ab-cyan);
    transform: translateY(-50%);
    z-index: 2;
    opacity: .8;
  }

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

  .page-about .ab-annual__list li {
    grid-template-columns: 130px 1fr;
    align-items: baseline;
    gap: 16px;
  }

  .page-about .ab-contact-cta__box {
    grid-template-columns: 1.1fr 1fr;
    align-items: start;
    padding: 40px 36px 42px;
  }

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

  .page-about .ab-contact-cta__list .ab-contact__item:last-child {
    grid-column: auto;
  }

  .page-about .ab-contact-cta__actions {
    grid-column: 1 / -1;
    padding-top: 6px;
    border-top: 1px solid var(--ab-line);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .ab-timeline__row::after,
  .page-about .ab-team__cell,
  .page-about .ab-totop {
    transition: none !important;
  }
}
</PAGE_CSS>>>