.page-about {
  position: relative;
  display: block;
  padding-bottom: var(--k8-block);
  background:
    radial-gradient(900px 520px at 8% -4%, rgba(47, 123, 255, 0.14), transparent 64%),
    var(--k8-black);
  color: var(--k8-ice);
}

/* ---------- 面包屑条 ---------- */
.page-about .ab-crumbs-bar {
  padding-top: clamp(14px, 2vw, 22px);
}

/* ---------- 首屏 ---------- */
.page-about .ab-hero {
  position: relative;
  padding: clamp(16px, 2.4vw, 30px) 0 clamp(40px, 6vw, 78px);
}

.page-about .ab-hero::before {
  content: "";
  position: absolute;
  inset: -30% -6% auto -6%;
  height: 150%;
  background:
    radial-gradient(520px 320px at 20% 16%, rgba(47, 123, 255, 0.22), transparent 68%),
    radial-gradient(420px 300px at 88% 42%, rgba(79, 240, 165, 0.11), transparent 70%);
  pointer-events: none;
}

.page-about .ab-hero > .k8-wrap {
  position: relative;
  z-index: 1;
}

.page-about .ab-hero__grid {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
  align-items: start;
}

.page-about .ab-hero__title {
  margin: clamp(10px, 1.6vw, 18px) 0 clamp(14px, 2vw, 22px);
  max-width: 18ch;
}

.page-about .ab-hero__lede {
  max-width: 46ch;
}

.page-about .ab-hero__actions {
  margin-top: clamp(20px, 2.6vw, 30px);
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .ab-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--k8-line);
  border: 1px solid var(--k8-line);
  border-radius: var(--k8-r-lg);
  overflow: hidden;
}

.page-about .ab-stat {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: clamp(16px, 2.2vw, 24px);
  background: linear-gradient(170deg, rgba(15, 26, 40, 0.96), rgba(8, 14, 22, 0.96));
}

.page-about .ab-stat__num {
  font-family: var(--k8-mono);
  font-size: clamp(26px, 3.4vw, 38px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--k8-green);
  font-variant-numeric: tabular-nums;
}

.page-about .ab-stat__label {
  font-size: 13px;
  line-height: 1.6;
  letter-spacing: 0.04em;
  color: var(--k8-mist);
}

/* ---------- 沿革 + 时间轴 ---------- */
.page-about .ab-track__grid {
  display: grid;
  gap: clamp(28px, 4vw, 52px);
  align-items: start;
}

.page-about .ab-track__intro {
  max-width: 52ch;
  color: var(--k8-mist);
}

.page-about .ab-timeline {
  position: relative;
  list-style: none;
  margin: clamp(28px, 4vw, 46px) 0 0;
  padding: 0;
}

.page-about .ab-timeline::before {
  content: "";
  position: absolute;
  top: 8px;
  bottom: 8px;
  left: 7px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, rgba(47, 123, 255, 0.85), rgba(35, 56, 79, 0.9) 48%, rgba(79, 240, 165, 0.8));
}

.page-about .ab-tl {
  position: relative;
  display: grid;
  gap: 0;
  padding-left: 30px;
  padding-bottom: clamp(20px, 2.8vw, 30px);
}

.page-about .ab-tl:last-child {
  padding-bottom: 0;
}

.page-about .ab-tl::before {
  content: "";
  position: absolute;
  left: 1px;
  top: 22px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--k8-black);
  border: 2px solid var(--k8-blue);
  box-sizing: border-box;
}

.page-about .ab-tl--now::before {
  border-color: var(--k8-green);
  box-shadow: 0 0 0 5px rgba(79, 240, 165, 0.14);
}

.page-about .ab-tl__year {
  display: inline-block;
  font-family: var(--k8-mono);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--k8-green);
  font-variant-numeric: tabular-nums;
  margin-bottom: 8px;
}

.page-about .ab-tl__card {
  padding: clamp(16px, 2.2vw, 24px);
  border: 1px solid var(--k8-line);
  border-radius: var(--k8-r-md);
  background: linear-gradient(180deg, rgba(15, 26, 40, 0.92), rgba(9, 16, 26, 0.94));
  transition: border-color 0.22s ease, transform 0.22s ease;
}

.page-about .ab-tl__card:hover {
  border-color: rgba(47, 123, 255, 0.5);
  transform: translateX(2px);
}

.page-about .ab-tl__card .k8-h4 {
  margin: 0 0 8px;
}

.page-about .ab-tl__text {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--k8-ice);
  opacity: 0.88;
}

.page-about .ab-tl__toggle {
  margin-top: 14px;
  padding: 0 0 2px;
  border: 0;
  border-bottom: 1px dashed rgba(47, 123, 255, 0.5);
  background: none;
  font: inherit;
  font-size: 13.5px;
  letter-spacing: 0.06em;
  color: var(--k8-blue);
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-about .ab-tl__toggle:hover,
.page-about .ab-tl__toggle:focus-visible {
  color: var(--k8-green);
  border-color: rgba(79, 240, 165, 0.6);
}

.page-about .ab-tl__more {
  margin-top: 14px;
  padding-left: 14px;
  border-left: 2px solid rgba(79, 240, 165, 0.35);
}

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

.page-about .ab-tl__list li {
  position: relative;
  padding-left: 14px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--k8-mist);
}

.page-about .ab-tl__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--k8-deepgreen);
  border: 1px solid var(--k8-green);
}

.page-about .ab-track__figure {
  margin: clamp(24px, 3.4vw, 40px) 0 0;
}

.page-about .ab-track__aside {
  padding: clamp(20px, 2.8vw, 30px);
  border: 1px solid rgba(79, 240, 165, 0.22);
  border-radius: var(--k8-r-lg);
  background:
    radial-gradient(360px 200px at 90% 0%, rgba(79, 240, 165, 0.12), transparent 66%),
    linear-gradient(158deg, rgba(12, 42, 32, 0.9), rgba(11, 20, 32, 0.94));
}

.page-about .ab-track__aside-title {
  margin: 0 0 12px;
}

.page-about .ab-track__aside-text {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--k8-ice);
  opacity: 0.9;
}

.page-about .ab-track__aside-list {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
  border-top: 1px solid rgba(79, 240, 165, 0.18);
  padding-top: 16px;
}

.page-about .ab-track__aside-list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--k8-mist);
}

.page-about .ab-track__aside-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 8px;
  height: 2px;
  border-radius: 2px;
  background: var(--k8-green);
}

/* ---------- 团队 ---------- */
.page-about .ab-team__lede {
  max-width: 54ch;
}

.page-about .ab-team__grid {
  display: grid;
  gap: clamp(22px, 3vw, 36px);
  margin-top: clamp(26px, 3.6vw, 44px);
  align-items: start;
}

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

.page-about .ab-roles {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .ab-role {
  position: relative;
  padding: 16px 18px 16px 36px;
  border: 1px solid var(--k8-line);
  border-radius: var(--k8-r-md);
  background: var(--k8-steel);
  transition: border-color 0.22s ease, background 0.22s ease;
}

.page-about .ab-role:hover,
.page-about .ab-role:focus-within {
  border-color: rgba(79, 240, 165, 0.45);
  background: var(--k8-indigo);
}

.page-about .ab-role::before {
  content: "";
  position: absolute;
  left: 15px;
  top: 24px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--k8-blue);
  box-shadow: 0 0 0 4px rgba(47, 123, 255, 0.12);
}

.page-about .ab-role--core::before {
  background: var(--k8-green);
  box-shadow: 0 0 0 4px rgba(79, 240, 165, 0.14);
}

.page-about .ab-role__name {
  margin: 0 0 6px;
  font-size: 16.5px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--k8-ice);
}

.page-about .ab-role__desc {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--k8-mist);
}

.page-about .ab-role__data {
  display: block;
  margin-top: 10px;
  padding-top: 9px;
  border-top: 1px solid var(--k8-line);
  font-family: var(--k8-mono);
  font-size: 12.5px;
  letter-spacing: 0.02em;
  color: var(--k8-mist);
  opacity: 0.85;
  transition: color 0.22s ease, opacity 0.22s ease, border-color 0.22s ease;
}

.page-about .ab-role:hover .ab-role__data,
.page-about .ab-role:focus-within .ab-role__data {
  color: var(--k8-green);
  opacity: 1;
  border-color: rgba(79, 240, 165, 0.3);
}

/* ---------- 2025 改版 ---------- */
.page-about .ab-revamp__intro {
  max-width: 58ch;
  color: var(--k8-mist);
}

.page-about .ab-revamp__grid {
  display: grid;
  gap: clamp(24px, 3.2vw, 42px);
  margin-top: clamp(24px, 3.4vw, 42px);
  align-items: start;
}

.page-about .ab-depths {
  display: grid;
  gap: 16px;
}

.page-about .ab-depth {
  padding: clamp(16px, 2.2vw, 22px);
  border-radius: var(--k8-r-md);
  border: 1px solid var(--k8-line);
  background: rgba(15, 26, 40, 0.7);
}

.page-about .ab-depth--after {
  border-color: rgba(47, 123, 255, 0.42);
  background:
    radial-gradient(300px 180px at 100% 0%, rgba(79, 240, 165, 0.12), transparent 68%),
    rgba(22, 38, 58, 0.82);
}

.page-about .ab-depth__label {
  margin: 0 0 12px;
  display: block;
}

.page-about .ab-depth--after .ab-depth__label {
  color: var(--k8-green);
}

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

.page-about .ab-depth__list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 13px;
  border-radius: var(--k8-r-sm);
  font-size: 14.5px;
  background: rgba(22, 38, 58, 0.85);
  border: 1px solid var(--k8-line);
  color: var(--k8-mist);
}

.page-about .ab-depth--after .ab-depth__list li {
  background: rgba(47, 123, 255, 0.14);
  border-color: rgba(47, 123, 255, 0.45);
  color: var(--k8-ice);
}

.page-about .ab-depth__list li::after {
  content: "";
  flex: 0 0 auto;
  border-radius: 2px;
}

.page-about .ab-depth--before .ab-depth__list li:nth-child(1)::after {
  width: 62px;
  height: 2px;
  background: var(--k8-mist);
  opacity: 0.35;
}

.page-about .ab-depth--before .ab-depth__list li:nth-child(2)::after {
  width: 42px;
  height: 2px;
  background: var(--k8-mist);
  opacity: 0.35;
}

.page-about .ab-depth--before .ab-depth__list li:nth-child(3)::after {
  width: 24px;
  height: 2px;
  background: var(--k8-mist);
  opacity: 0.35;
}

.page-about .ab-depth--after .ab-depth__list li:nth-child(1)::after {
  width: 84px;
  height: 3px;
  background: linear-gradient(90deg, var(--k8-blue), var(--k8-green));
}

.page-about .ab-depth--after .ab-depth__list li:nth-child(2)::after {
  width: 84px;
  height: 3px;
  background: linear-gradient(90deg, var(--k8-blue), var(--k8-green));
}

.page-about .ab-depth__note {
  margin: 14px 0 0;
  display: block;
}

.page-about .ab-revamp__copy-title {
  margin: 0 0 16px;
}

.page-about .ab-revamp__points {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .ab-revamp__points li {
  padding-left: 16px;
  border-left: 3px solid var(--k8-orange);
}

.page-about .ab-revamp__points strong {
  display: block;
  font-size: 16px;
  font-weight: 700;
  color: var(--k8-ice);
  margin-bottom: 4px;
}

.page-about .ab-revamp__points span {
  display: block;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--k8-mist);
}

.page-about .ab-revamp__figure {
  margin: clamp(26px, 3.6vw, 44px) 0 0;
}

/* ---------- 覆盖范围 ---------- */
.page-about .ab-scope__grid {
  display: grid;
  gap: clamp(24px, 3.4vw, 46px);
  align-items: center;
}

.page-about .ab-scope__second {
  margin-top: 14px;
  color: var(--k8-mist);
}

.page-about .ab-scope__figures {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--k8-line);
  border: 1px solid var(--k8-line);
  border-radius: var(--k8-r-md);
  overflow: hidden;
}

.page-about .ab-scope__figures li {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: clamp(16px, 2.2vw, 24px);
  background: var(--k8-indigo);
}

.page-about .ab-scope__num {
  font-family: var(--k8-mono);
  font-size: clamp(22px, 2.8vw, 30px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--k8-blue);
  font-variant-numeric: tabular-nums;
}

.page-about .ab-scope__cap {
  font-size: 13px;
  line-height: 1.6;
  letter-spacing: 0.04em;
  color: var(--k8-mist);
}

/* ---------- 赛季回顾 ---------- */
.page-about .ab-recap__panel {
  padding: clamp(24px, 4vw, 50px);
  border: 1px solid rgba(79, 240, 165, 0.24);
  border-radius: var(--k8-r-lg);
  background:
    radial-gradient(620px 320px at 88% 0%, rgba(79, 240, 165, 0.14), transparent 64%),
    linear-gradient(150deg, rgba(12, 42, 32, 0.9), rgba(9, 16, 26, 0.95));
}

.page-about .ab-recap__text {
  max-width: 56ch;
  margin-top: 12px;
  color: var(--k8-ice);
  opacity: 0.9;
}

.page-about .ab-recap__steps {
  list-style: none;
  margin: clamp(24px, 3.4vw, 38px) 0 0;
  padding: 0;
  display: grid;
  gap: 16px;
  counter-reset: recap;
}

.page-about .ab-recap__steps li {
  position: relative;
  padding: 18px 18px 18px 20px;
  border-top: 2px solid rgba(79, 240, 165, 0.35);
  background: rgba(6, 9, 16, 0.42);
  border-radius: 0 0 var(--k8-r-sm) var(--k8-r-sm);
}

.page-about .ab-recap__steps .k8-h4 {
  margin: 8px 0 8px;
}

.page-about .ab-recap__steps p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--k8-mist);
}

.page-about .ab-recap__index {
  font-family: var(--k8-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--k8-green);
  font-variant-numeric: tabular-nums;
}

/* ---------- 延伸入口 ---------- */
.page-about .ab-next__title {
  margin-bottom: clamp(18px, 2.4vw, 26px);
}

.page-about .ab-next__grid {
  display: grid;
  gap: 14px;
}

.page-about .ab-next__card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: clamp(18px, 2.4vw, 26px);
  border: 1px solid var(--k8-line);
  border-radius: var(--k8-r-md);
  background: linear-gradient(170deg, rgba(15, 26, 40, 0.9), rgba(8, 14, 22, 0.94));
  color: inherit;
  text-decoration: none;
  transition: border-color 0.22s ease, transform 0.22s ease;
}

.page-about .ab-next__card:hover,
.page-about .ab-next__card:focus-visible {
  border-color: rgba(255, 122, 47, 0.6);
  transform: translateY(-3px);
}

.page-about .ab-next__name {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--k8-ice);
}

.page-about .ab-next__desc {
  font-size: 14px;
  line-height: 1.75;
  color: var(--k8-mist);
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-about .ab-roles {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (min-width: 720px) {
  .page-about .ab-timeline::before {
    left: 87px;
  }

  .page-about .ab-tl {
    grid-template-columns: 88px minmax(0, 1fr);
    column-gap: 26px;
    padding-left: 0;
  }

  .page-about .ab-tl::before {
    left: 81px;
    top: 4px;
  }

  .page-about .ab-tl__year {
    margin-bottom: 0;
    padding-top: 2px;
    text-align: right;
    width: 88px;
  }
}

@media (min-width: 900px) {
  .page-about .ab-hero__grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.86fr);
  }

  .page-about .ab-team__grid {
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  }

  .page-about .ab-revamp__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }

  .page-about .ab-scope__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  }

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

@media (min-width: 1000px) {
  .page-about .ab-track__grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 0.8fr);
  }

  .page-about .ab-track__aside {
    position: sticky;
    top: 26px;
  }
}

@media (min-width: 1024px) {
  .page-about .ab-recap__steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 480px) {
  .page-about .ab-hero__stats,
  .page-about .ab-scope__figures {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-about .ab-depth__list li::after {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .ab-tl__card,
  .page-about .ab-role,
  .page-about .ab-next__card {
    transition: none;
  }

  .page-about .ab-tl__card:hover,
  .page-about .ab-role:hover,
  .page-about .ab-next__card:hover {
    transform: none;
  }
}