.page-about {
  --ab-line: rgba(159, 184, 176, 0.18);
  --ab-cyan-soft: rgba(79, 240, 206, 0.42);
  background: var(--ly-ink);
  color: var(--ly-warm);
  font-family: var(--ly-font-sans);
  overflow-x: hidden;
}

.page-about p {
  margin: 0;
}

.page-about .ab-sec {
  padding: clamp(46px, 8vw, 96px) 0;
}

.page-about .ab-sec--deep {
  background: var(--ly-deep);
  border-top: 1px solid var(--ly-line);
  border-bottom: 1px solid var(--ly-line);
}

.page-about .ab-sec__head {
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-width: 660px;
  margin-bottom: clamp(26px, 5vw, 52px);
}

.page-about .ly-h2 {
  font-size: clamp(26px, 5vw, 44px);
  line-height: 1.14;
  letter-spacing: -0.02em;
  margin: 0;
}

.page-about .ly-h3 {
  font-size: clamp(19px, 2.6vw, 24px);
  line-height: 1.3;
  letter-spacing: -0.01em;
  margin: 0;
}

.page-about .ly-lead {
  color: var(--ly-mist);
  font-size: clamp(15px, 2vw, 17px);
  line-height: 1.78;
}

.page-about .ly-eyebrow {
  color: var(--ly-cyan);
  font-family: var(--ly-font-mono);
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin: 0;
}

/* ---------- 首屏 ---------- */
.page-about .ab-hero {
  position: relative;
  isolation: isolate;
  padding: clamp(24px, 5vw, 48px) 0 clamp(44px, 7vw, 84px);
  background:
    radial-gradient(120% 90% at 82% 0%, rgba(30, 90, 76, 0.6), transparent 62%),
    var(--ly-ink);
  border-bottom: 1px solid var(--ly-line);
}

.page-about .ab-hero__media {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.page-about .ab-hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.17;
  filter: saturate(0.7) contrast(1.05);
}

.page-about .ab-hero__inner {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: clamp(14px, 2.6vw, 24px);
}

.page-about .ab-crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--ly-font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--ly-mist);
}

.page-about .ab-crumbs a {
  color: var(--ly-mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--ly-speed) var(--ly-ease), border-color var(--ly-speed) var(--ly-ease);
}

.page-about .ab-crumbs a:hover,
.page-about .ab-crumbs a:focus-visible {
  color: var(--ly-cyan);
  border-color: var(--ab-cyan-soft);
}

.page-about .ab-crumbs [aria-current="page"] {
  color: var(--ly-warm);
}

.page-about .ab-hero__title {
  font-size: clamp(32px, 7.6vw, 64px);
  line-height: 1.02;
  letter-spacing: -0.025em;
  font-weight: 900;
  margin: 0;
  max-width: 18ch;
}

.page-about .ab-hero__lead {
  max-width: 60ch;
  color: var(--ly-mist);
  font-size: clamp(15px, 2vw, 17px);
  line-height: 1.78;
}

.page-about .ab-hero__stats {
  list-style: none;
  margin: clamp(8px, 2vw, 18px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px 20px;
}

.page-about .ab-hero__stats .ly-stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-top: 12px;
  border-top: 1px solid var(--ly-line);
}

.page-about .ab-hero__stats .ly-stat__num {
  font-family: var(--ly-font-mono);
  font-size: clamp(26px, 4.4vw, 38px);
  line-height: 1;
  color: var(--ly-cyan);
  letter-spacing: 0.02em;
}

.page-about .ab-hero__stats .ly-stat__label {
  font-size: 13px;
  color: var(--ly-mist);
  letter-spacing: 0.04em;
}

/* ---------- 时间轴 ---------- */
.page-about .ab-track {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(18px, 3vw, 30px);
}

.page-about .ab-track::before {
  content: "";
  position: absolute;
  left: 23px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--ly-cyan) 0%, rgba(79, 240, 206, 0.34) 46%, rgba(79, 240, 206, 0.07) 100%);
}

.page-about .ab-track__item {
  --ab-indent: 0px;
  position: relative;
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 16px;
}

.page-about .ab-track__node {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--ly-deep);
  border: 1px solid var(--ab-cyan-soft);
  color: var(--ly-cyan);
  font-family: var(--ly-font-mono);
  font-size: 14px;
  letter-spacing: 0.04em;
  z-index: 1;
  transition: background var(--ly-speed) var(--ly-ease), color var(--ly-speed) var(--ly-ease);
}

.page-about .ab-track__item--now .ab-track__node {
  background: var(--ly-cyan);
  color: var(--ly-ink);
  border-color: var(--ly-cyan);
}

.page-about .ab-track__card {
  position: relative;
  margin-left: var(--ab-indent);
  padding: clamp(14px, 3vw, 24px);
  border: 1px solid var(--ly-line);
  border-radius: var(--ly-radius);
  background: linear-gradient(155deg, var(--ly-moss), var(--ly-deep) 78%);
  transition: transform var(--ly-speed) var(--ly-ease), border-color var(--ly-speed) var(--ly-ease);
}

.page-about .ab-track__card::before {
  content: "";
  position: absolute;
  top: 23px;
  left: calc(-1 * (var(--ab-indent) + 16px));
  width: calc(var(--ab-indent) + 16px);
  height: 1px;
  background: linear-gradient(90deg, var(--ab-cyan-soft), rgba(79, 240, 206, 0.08));
}

.page-about .ab-track__card p {
  margin-top: 8px;
  color: var(--ly-mist);
  font-size: 15px;
  line-height: 1.75;
}

.page-about .ab-track__card .ab-track__fix {
  margin-top: 12px;
  padding-left: 12px;
  border-left: 2px solid rgba(79, 240, 206, 0.35);
  color: var(--ly-pale);
  font-size: 14px;
  line-height: 1.7;
}

.page-about .ab-track__item--now .ab-track__card {
  border-color: var(--ab-cyan-soft);
  background: linear-gradient(155deg, rgba(30, 90, 76, 0.85), var(--ly-deep) 80%);
}

.page-about .ab-track__item--now .ab-track__card .ab-track__fix {
  border-left-color: var(--ly-orange);
  color: var(--ly-warm);
}

.page-about .ab-track__item:hover .ab-track__card,
.page-about .ab-track__item:focus-within .ab-track__card {
  transform: translateY(-2px);
  border-color: var(--ab-cyan-soft);
}

/* ---------- 通用图片槽 ---------- */
.page-about .ab-figure {
  position: relative;
  margin: 0;
  border: 1px solid var(--ly-line);
  border-radius: var(--ly-radius);
  overflow: hidden;
  background: linear-gradient(140deg, var(--ly-board), var(--ly-ink));
}

.page-about .ab-figure img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  max-width: 100%;
}

.page-about .ab-figure--wide {
  aspect-ratio: 14 / 5;
  margin-bottom: clamp(22px, 4vw, 40px);
}

.page-about .ab-figure--tall {
  aspect-ratio: 3 / 4;
}

/* ---------- 团队 ---------- */
.page-about .ab-team {
  display: grid;
  gap: 14px;
}

.page-about .ab-team__card {
  padding: clamp(16px, 3vw, 26px);
  border: 1px solid var(--ly-line);
  border-radius: var(--ly-radius);
  background: rgba(20, 58, 51, 0.62);
  transition: transform var(--ly-speed) var(--ly-ease), border-color var(--ly-speed) var(--ly-ease), background var(--ly-speed) var(--ly-ease);
}

.page-about .ab-team__card:hover {
  transform: translateY(-2px);
  border-color: var(--ab-cyan-soft);
  background: rgba(30, 90, 76, 0.55);
}

.page-about .ab-team__num {
  font-family: var(--ly-font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--ly-cyan);
  margin-bottom: 8px;
}

.page-about .ab-team__card p {
  margin-top: 10px;
  color: var(--ly-mist);
  font-size: 15px;
  line-height: 1.75;
}

.page-about .ab-team__tags {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .ab-team__tags li {
  font-family: var(--ly-font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  padding: 5px 9px;
  color: var(--ly-pale);
  border: 1px solid var(--ly-line);
  border-radius: var(--ly-radius);
  background: rgba(6, 18, 15, 0.5);
}

/* ---------- 数据来源 ---------- */
.page-about .ab-data {
  display: grid;
  gap: clamp(24px, 4vw, 46px);
}

.page-about .ab-data__text {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.page-about .ab-data__text > p:not(.ly-eyebrow) {
  color: var(--ly-mist);
  font-size: 15px;
  line-height: 1.78;
}

.page-about .ab-compare {
  display: grid;
  gap: 12px;
  margin: 6px 0 2px;
}

.page-about .ab-compare__row {
  padding: 16px 18px;
  border: 1px solid var(--ly-line);
  border-left: 2px solid var(--ab-cyan-soft);
  border-radius: var(--ly-radius);
  background: rgba(20, 58, 51, 0.5);
}

.page-about .ab-compare__row--warn {
  border-left-color: var(--ly-orange);
  background: rgba(138, 59, 18, 0.16);
}

.page-about .ab-compare__row p {
  margin-top: 10px;
  color: var(--ly-mist);
  font-size: 15px;
  line-height: 1.75;
}

.page-about .ab-compare .ly-tag {
  display: inline-block;
  font-family: var(--ly-font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ly-cyan);
  padding: 4px 9px;
  border: 1px solid var(--ab-cyan-soft);
  border-radius: var(--ly-radius);
}

.page-about .ab-compare .ly-tag--warn {
  color: var(--ly-orange);
  border-color: rgba(255, 122, 47, 0.5);
}

/* ---------- 栏目清单 ---------- */
.page-about .ab-leagues {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-about .ab-league {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 4px 12px;
  padding: 14px 0;
  border-bottom: 1px solid var(--ly-line);
}

.page-about .ab-league__num {
  grid-row: 1 / span 2;
  align-self: start;
  font-family: var(--ly-font-mono);
  font-size: 15px;
  letter-spacing: 0.04em;
  color: var(--ly-mist-soft);
  transition: color var(--ly-speed) var(--ly-ease);
}

.page-about .ab-league__main {
  display: flex;
  align-items: baseline;
  gap: 10px;
  min-width: 0;
}

.page-about .ab-league__name {
  font-weight: 700;
  font-size: 16px;
  letter-spacing: 0.01em;
  color: var(--ly-warm);
}

.page-about .ab-league__cat {
  font-family: var(--ly-font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--ly-mist);
  border: 1px solid var(--ly-line);
  border-radius: var(--ly-radius);
  padding: 2px 7px;
}

.page-about .ab-league__freq {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--ly-mist);
}

.page-about .ab-dot {
  flex: none;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--ly-cyan);
  box-shadow: 0 0 0 3px rgba(79, 240, 206, 0.14);
}

.page-about .ab-dot--soft {
  background: var(--ly-board);
  box-shadow: 0 0 0 3px rgba(30, 90, 76, 0.24);
}

.page-about .ab-league:hover .ab-league__num {
  color: var(--ly-cyan);
}

/* ---------- 运营方式 ---------- */
.page-about .ab-narrow {
  max-width: 760px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.page-about .ab-narrow > p:not(.ly-eyebrow) {
  color: var(--ly-mist);
  font-size: 15px;
  line-height: 1.8;
}

.page-about .ab-inline {
  color: var(--ly-cyan);
  border-bottom: 1px solid var(--ab-cyan-soft);
}

.page-about .ab-rhythm {
  list-style: none;
  margin: 8px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .ab-rhythm li {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--ly-line);
  font-size: 14px;
  color: var(--ly-mist);
}

.page-about .ab-rhythm .ly-mono {
  font-family: var(--ly-font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--ly-cyan);
}

.page-about .ab-rule {
  height: 1px;
  margin: 12px 0 4px;
  border: 0;
  background: linear-gradient(90deg, var(--ly-cyan), rgba(79, 240, 206, 0));
}

.page-about .ab-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .ab-links .ly-btn {
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 11px 20px;
  border-radius: var(--ly-radius);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.04em;
  transition: background var(--ly-speed) var(--ly-ease), border-color var(--ly-speed) var(--ly-ease), color var(--ly-speed) var(--ly-ease), transform var(--ly-speed) var(--ly-ease);
}

.page-about .ab-links .ly-btn--primary {
  background: var(--ly-orange);
  border: 1px solid var(--ly-orange);
  color: var(--ly-ink);
}

.page-about .ab-links .ly-btn--primary:hover {
  background: var(--ly-ember);
  border-color: var(--ly-ember);
  color: var(--ly-warm);
  transform: translateY(-2px);
}

.page-about .ab-links .ly-btn--ghost {
  background: transparent;
  border: 1px solid var(--ly-line);
  color: var(--ly-pale);
}

.page-about .ab-links .ly-btn--ghost:hover {
  border-color: var(--ab-cyan-soft);
  color: var(--ly-cyan);
  transform: translateY(-2px);
}

.page-about .ab-links .ly-btn:focus-visible {
  outline: 2px solid var(--ly-cyan);
  outline-offset: 3px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-about .ab-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .page-about .ab-team__card:nth-child(2) {
    margin-top: 36px;
  }

  .page-about .ab-team__card:nth-child(3) {
    margin-top: 72px;
  }

  .page-about .ab-leagues {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(22px, 4vw, 56px);
    padding-bottom: 18px;
  }

  .page-about .ab-leagues > .ab-league:nth-child(even) {
    transform: translateY(18px);
  }
}

@media (min-width: 900px) {
  .page-about .ab-track {
    gap: 34px;
  }

  .page-about .ab-track__item:nth-child(2) {
    --ab-indent: 28px;
  }

  .page-about .ab-track__item:nth-child(3) {
    --ab-indent: 56px;
  }

  .page-about .ab-track__item:nth-child(4) {
    --ab-indent: 84px;
  }

  .page-about .ab-track__item:nth-child(5) {
    --ab-indent: 112px;
  }

  .page-about .ab-data {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-about .ab-figure--tall {
    position: sticky;
    top: 96px;
  }
}

@media (min-width: 1100px) {
  .page-about .ab-hero__inner {
    padding-right: clamp(0px, 6vw, 72px);
  }

  .page-about .ab-track__item:nth-child(2) {
    --ab-indent: 40px;
  }

  .page-about .ab-track__item:nth-child(3) {
    --ab-indent: 80px;
  }

  .page-about .ab-track__item:nth-child(4) {
    --ab-indent: 120px;
  }

  .page-about .ab-track__item:nth-child(5) {
    --ab-indent: 160px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .ab-track__card,
  .page-about .ab-team__card,
  .page-about .ab-links .ly-btn {
    transition: none;
  }

  .page-about .ab-track__item:hover .ab-track__card,
  .page-about .ab-track__item:focus-within .ab-track__card,
  .page-about .ab-team__card:hover,
  .page-about .ab-links .ly-btn:hover {
    transform: none;
  }
}