.page-about {
  --about-idx: 140px;
  --about-gap: 44px;
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  padding: 34px 0 6px;
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: -40% -20% auto -20%;
  height: 460px;
  background:
    radial-gradient(58% 100% at 18% 0%, rgba(127, 233, 224, .16), transparent 70%),
    radial-gradient(48% 88% at 82% 8%, rgba(154, 107, 255, .16), transparent 72%);
  pointer-events: none;
}

.page-about .about-hero > .wrap {
  position: relative;
}

.page-about .about-hero .eyebrow {
  margin: 18px 0 0;
}

.page-about .about-hero__grid {
  display: grid;
  gap: 22px;
  margin-top: 16px;
}

.page-about .about-hero__title {
  min-width: 0;
}

.page-about .about-hero__sub {
  display: inline-block;
  margin: 14px 0 0;
  padding: 5px 13px;
  border: 1px solid rgba(127, 233, 224, .34);
  border-radius: 999px;
  background: rgba(127, 233, 224, .07);
  color: var(--cyan);
  font-size: 12px;
  letter-spacing: .12em;
}

.page-about .about-hero__lead {
  margin: 0;
  max-width: 36em;
}

@media (min-width: 900px) {
  .page-about .about-hero {
    padding-top: 44px;
  }
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 1fr);
    gap: 52px;
    align-items: end;
  }
}

/* ---------- 关键数据条 ---------- */

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 34px 0 0;
  padding: 0;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  overflow: hidden;
}

@media (min-width: 760px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    margin-top: 42px;
  }
}

.page-about .about-stats__cell {
  background: var(--ink-800);
  padding: 15px 16px 17px;
  min-width: 0;
}

.page-about .about-stats dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--rock);
  text-transform: uppercase;
}

.page-about .about-stats dd {
  display: flex;
  align-items: baseline;
  gap: 5px;
  margin: 8px 0 0;
  min-width: 0;
}

.page-about .about-stats__num {
  font-family: var(--font-mono);
  font-size: 30px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: -.03em;
  color: var(--cyan);
}

.page-about .about-stats__unit {
  font-size: 12px;
  color: var(--rock);
}

/* ---------- 主体双栏：索引轨道 + 内容 ---------- */

.page-about .about-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  padding-top: 30px;
  padding-bottom: 60px;
}

@media (min-width: 1024px) {
  .page-about .about-body {
    grid-template-columns: var(--about-idx) minmax(0, 1fr);
    gap: var(--about-gap);
    align-items: start;
    padding-top: 40px;
    padding-bottom: 80px;
  }
}

.page-about .index-track {
  display: flex;
  gap: 7px;
  margin: 0;
  padding: 2px 0 6px;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-about .index-track::-webkit-scrollbar {
  display: none;
}

.page-about .index-track a {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  box-sizing: border-box;
  min-height: 44px;
  padding: 8px 14px;
  border: 1px solid var(--line-soft);
  border-radius: 999px;
  background: var(--glass);
  color: var(--rock);
  font-size: 13px;
  text-decoration: none;
  transition: color 160ms var(--ease), border-color 160ms var(--ease);
}

.page-about .index-track a:hover {
  color: var(--paper);
  border-color: var(--line);
}

.page-about .index-track a:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-about .index-track__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--gold);
}

.page-about .index-track__label {
  white-space: nowrap;
}

@media (min-width: 1024px) {
  .page-about .index-track {
    position: sticky;
    top: 56px;
    flex-direction: column;
    gap: 0;
    margin: 0;
    padding: 0;
    overflow: visible;
    border-left: 1px solid var(--line-soft);
  }

  .page-about .index-track a {
    flex-direction: column;
    align-items: flex-start;
    gap: 3px;
    min-height: 0;
    padding: 11px 0 11px 16px;
    border: 0;
    border-radius: 0;
    background: transparent;
    position: relative;
    font-size: 13px;
    line-height: 1.32;
  }

  .page-about .index-track a::before {
    content: "";
    position: absolute;
    left: -1px;
    top: 9px;
    bottom: 9px;
    width: 2px;
    background: var(--cyan);
    opacity: 0;
    transform: scaleY(.35);
    transform-origin: top;
    transition: opacity 200ms var(--ease), transform 200ms var(--ease);
  }

  .page-about .index-track a[aria-current="true"] {
    color: var(--paper);
  }

  .page-about .index-track a[aria-current="true"]::before {
    opacity: 1;
    transform: scaleY(1);
  }

  .page-about .index-track a[aria-current="true"] .index-track__num {
    color: var(--cyan);
  }

  .page-about .index-track__label {
    white-space: normal;
  }
}

/* ---------- 章节 ---------- */

.page-about .about-sec {
  padding-block: 36px;
  border-top: 1px solid var(--line-soft);
  scroll-margin-top: 24px;
}

.page-about .about-sec:first-child {
  border-top: 0;
  padding-top: 4px;
}

@media (min-width: 1024px) {
  .page-about .about-sec {
    padding-block: 48px;
    scroll-margin-top: 40px;
  }
}

.page-about .about-sec__head {
  margin-bottom: 22px;
}

.page-about .about-sec__head .eyebrow {
  margin: 0 0 12px;
}

.page-about .about-sec h2 {
  margin: 0;
  max-width: 22ch;
  font-size: clamp(1.6rem, 3.1vw, 2.4rem);
  font-weight: 700;
  line-height: 1.14;
  letter-spacing: -.022em;
  color: var(--ivory);
}

.page-about .about-sec p {
  max-width: 36em;
  margin: 0 0 14px;
  font-size: 16px;
  line-height: 1.78;
  color: var(--paper);
}

.page-about .about-sec p:last-child {
  margin-bottom: 0;
}

@media (min-width: 1024px) {
  .page-about .about-sec p {
    font-size: 17px;
  }
}

/* ---------- 能力清单 ---------- */

.page-about .about-list {
  list-style: none;
  display: grid;
  gap: 1px;
  margin: 24px 0 0;
  padding: 0;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .about-list > li {
  display: grid;
  gap: 5px;
  padding: 14px 16px;
  background: var(--ink-800);
  border-left: 2px solid transparent;
  transition: border-color 160ms var(--ease), background 160ms var(--ease);
}

.page-about .about-list > li:hover {
  border-left-color: var(--cyan);
  background: var(--panel);
}

.page-about .about-list strong {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .01em;
  color: var(--cyan);
}

.page-about .about-list span {
  font-size: 14px;
  line-height: 1.72;
  color: var(--rock);
}

/* ---------- 行动按钮组 ---------- */

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

/* ---------- 配图 ---------- */

.page-about .about-figure {
  margin: 0 0 24px;
  aspect-ratio: 14 / 9;
}

.page-about .about-figure--stack {
  aspect-ratio: 3 / 2;
  margin: 22px 0 0;
}

.page-about .about-figure--cadence {
  aspect-ratio: 3 / 2;
  margin: 22px 0 0;
}

.page-about .about-figure .media-frame__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- 团队卡片 ---------- */

.page-about .team-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-top: 24px;
}

@media (min-width: 780px) {
  .page-about .team-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1120px) {
  .page-about .team-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }
}

.page-about .team-card {
  display: flex;
  flex-direction: column;
  gap: 11px;
  padding: 22px 20px 20px;
  border-radius: var(--radius);
  min-width: 0;
  transition: transform 180ms var(--ease), box-shadow 180ms var(--ease);
}

.page-about .team-card:hover,
.page-about .team-card:focus-within {
  transform: translateY(-4px);
  box-shadow: 0 14px 30px rgba(0, 0, 0, .34);
}

.page-about .team-card--moss {
  background: var(--moss);
  color: var(--ivory);
}

.page-about .team-card--clay {
  background: var(--clay);
  color: var(--ink-900);
}

.page-about .team-card--ivory {
  background: var(--ivory);
  color: var(--ink-900);
}

.page-about .team-card__role {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  opacity: .74;
}

.page-about .team-card h3 {
  margin: 0;
  font-size: 1.22rem;
  font-weight: 700;
  letter-spacing: -.01em;
  line-height: 1.3;
}

.page-about .team-card p {
  margin: 0;
  max-width: none;
  font-size: 14.5px;
  line-height: 1.76;
  color: inherit;
  opacity: .93;
}

.page-about .team-card__keys {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: auto;
  padding-top: 8px;
}

.page-about .team-card__keys span {
  padding: 4px 10px;
  border: 1px solid currentColor;
  border-radius: 999px;
  font-size: 11.5px;
  letter-spacing: .04em;
  opacity: .72;
  transition: opacity 160ms var(--ease);
}

.page-about .team-card:hover .team-card__keys span,
.page-about .team-card:focus-within .team-card__keys span {
  opacity: 1;
}

/* ---------- 赛季专题两条线 ---------- */

.page-about .season-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  margin-top: 26px;
}

@media (min-width: 900px) {
  .page-about .season-split {
    grid-template-columns: minmax(0, .92fr) minmax(0, 1fr);
    gap: 40px;
    align-items: start;
  }
}

.page-about .season-line .t-label {
  display: block;
  margin: 0;
  color: var(--rock);
}

.page-about .season-phases {
  list-style: none;
  counter-reset: phase;
  display: grid;
  gap: 7px;
  margin: 14px 0 0;
  padding: 0;
}

.page-about .season-phases li {
  counter-increment: phase;
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 10px 14px;
  border-left: 2px solid var(--violet-a);
  border-radius: 0 var(--radius) var(--radius) 0;
  background: linear-gradient(90deg, rgba(154, 107, 255, .16), rgba(91, 43, 217, .03) 72%);
  font-size: 15px;
  color: var(--paper);
  min-width: 0;
}

.page-about .season-phases li::before {
  content: counter(phase, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--violet-a);
}

.page-about .season-games {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin: 14px 0 0;
  padding: 0;
}

.page-about .season-games li {
  padding: 6px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--glass);
  color: var(--paper);
  font-size: 13px;
  line-height: 1.5;
  transition: border-color 160ms var(--ease), color 160ms var(--ease);
}

.page-about .season-games li:hover {
  border-color: var(--cyan);
  color: var(--cyan);
}

/* ---------- 版本时间线 ---------- */

.page-about .ver-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 8px;
}

@media (min-width: 1024px) {
  .page-about .ver-layout {
    grid-template-columns: minmax(0, 1fr) minmax(0, .68fr);
    gap: 36px;
    align-items: start;
  }
  .page-about .ver-layout .about-figure--stack {
    position: sticky;
    top: 60px;
    margin-top: 8px;
  }
}

.page-about .ver-track {
  position: relative;
  list-style: none;
  display: grid;
  gap: 10px;
  margin: 6px 0 0;
  padding: 0;
}

.page-about .ver-track::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 18px;
  bottom: 18px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--violet-a), var(--violet-b));
  opacity: .62;
}

.page-about .ver-track > li {
  position: relative;
  padding-left: 34px;
  min-width: 0;
}

.page-about .ver-track > li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 17px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--violet-a), var(--violet-b));
  box-shadow: 0 0 0 3px var(--ink-900);
}

.page-about .ver {
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: var(--glass);
  transition: border-color 180ms var(--ease);
}

.page-about .ver[open] {
  border-color: rgba(154, 107, 255, .48);
}

.page-about .ver__sum {
  display: flex;
  align-items: baseline;
  gap: 12px;
  box-sizing: border-box;
  min-height: 44px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
  color: var(--ivory);
}

.page-about .ver__sum::-webkit-details-marker {
  display: none;
}

.page-about .ver__sum:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-about .ver__sum::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1;
  color: var(--violet-a);
}

.page-about .ver[open] .ver__sum::after {
  content: "-";
}

.page-about .ver__id {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--violet-a);
}

.page-about .ver__title {
  font-size: 1.02rem;
  font-weight: 600;
  letter-spacing: -.01em;
  min-width: 0;
}

.page-about .ver__list {
  list-style: none;
  display: grid;
  gap: 9px;
  margin: 0;
  padding: 0 16px 16px;
}

.page-about .ver__list li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.74;
  color: var(--paper);
}

.page-about .ver__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .68em;
  width: 7px;
  height: 1px;
  background: var(--cyan);
}

/* ---------- 更新节奏 ---------- */

.page-about .cadence {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
}

@media (min-width: 960px) {
  .page-about .cadence {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .8fr);
    gap: 40px;
    align-items: start;
  }
}

.page-about .cadence-list {
  list-style: none;
  display: grid;
  gap: 1px;
  margin: 22px 0 0;
  padding: 0;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .cadence-list li {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 13px 16px;
  background: var(--panel);
  min-width: 0;
}

@media (min-width: 520px) {
  .page-about .cadence-list li {
    grid-template-columns: 104px minmax(0, 1fr);
    align-items: baseline;
    gap: 14px;
  }
}

.page-about .cadence-list__num {
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: -.01em;
  color: var(--acid);
}

.page-about .cadence-list__txt {
  font-size: 14px;
  line-height: 1.7;
  color: var(--paper);
}

.page-about .about-figure--cadence {
  margin-top: 22px;
}

@media (min-width: 960px) {
  .page-about .about-figure--cadence {
    margin-top: 4px;
  }
}

/* ---------- 结尾行动区 ---------- */

.page-about .about-cta {
  position: relative;
  padding: 48px 0 56px;
  border-top: 1px solid var(--line-soft);
  background:
    linear-gradient(180deg, rgba(14, 23, 41, .9), rgba(7, 11, 20, 0) 78%);
}

.page-about .about-cta::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--violet-a) 55%, var(--gold));
  opacity: .7;
}

.page-about .about-cta__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

@media (min-width: 900px) {
  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, .9fr) minmax(0, 1fr);
    gap: 20px 48px;
    align-items: start;
  }
  .page-about .about-cta__text {
    grid-column: 2;
  }
  .page-about .about-cta__actions {
    grid-column: 2;
  }
}

.page-about .about-cta .eyebrow {
  margin: 0 0 12px;
}

.page-about .about-cta h2 {
  margin: 0;
  max-width: 20ch;
  font-size: clamp(1.5rem, 2.9vw, 2.1rem);
  font-weight: 700;
  line-height: 1.16;
  letter-spacing: -.022em;
  color: var(--ivory);
}

.page-about .about-cta__text {
  margin: 0;
  max-width: 36em;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--rock);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 6px 0 0;
}