.page-about {
  --about-rail-w: 200px;
  --about-chapter-no-w: 54px;
  --about-card-bg: var(--tq-coal);
  background: var(--tq-coal);
  color: var(--tq-mist);
}

.page-about .about-crumbs {
  padding: 20px 0 0;
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  border-bottom: 1px solid var(--tq-line);
  padding: 30px 0 54px;
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
}

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

.page-about .about-hero__title {
  margin: 10px 0 0;
  letter-spacing: -.025em;
}

.page-about .about-hero__lede {
  margin-top: 18px;
  max-width: 660px;
}

/* 竖向赛季刻度 */

.page-about .about-scale {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0 0 0 22px;
  display: grid;
  gap: 24px;
}

.page-about .about-scale::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(180deg, var(--tq-cyan) 0%, var(--tq-edge) 55%, rgba(138, 163, 155, .12) 100%);
}

.page-about .about-scale__node {
  position: relative;
  display: grid;
  gap: 3px;
}

.page-about .about-scale__node::before {
  content: "";
  position: absolute;
  left: -22px;
  top: 5px;
  width: 11px;
  height: 11px;
  border: 1px solid var(--tq-sage);
  background: var(--tq-green);
}

.page-about .about-scale__node.is-start::before { border-color: var(--tq-cyan); }
.page-about .about-scale__node.is-final::before { border-color: var(--tq-amber); }
.page-about .about-scale__node.is-now::before { border-color: var(--tq-cyan); background: var(--tq-cyan); }

.page-about .about-scale__year {
  font-family: var(--tq-font-mono);
  font-size: 21px;
  font-weight: 700;
  line-height: 1;
  color: var(--tq-mist);
  font-variant-numeric: tabular-nums;
}

.page-about .about-scale__label {
  font-size: 12px;
  line-height: 1.5;
  letter-spacing: .05em;
  color: var(--tq-sage);
}

/* 首屏数据条 */

.page-about .about-hero__facts {
  margin-top: 32px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--tq-line-soft);
  border: 1px solid var(--tq-line-soft);
}

.page-about .about-fact {
  background: var(--tq-green);
  padding: 16px 18px;
}

.page-about .about-fact__k {
  display: block;
  font-family: var(--tq-font-mono);
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  color: var(--tq-mist);
  font-variant-numeric: tabular-nums;
  letter-spacing: .01em;
}

.page-about .about-fact__l {
  display: block;
  margin-top: 7px;
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--tq-sage);
}

/* ---------- 主体分屏 ---------- */

.page-about .about-body {
  padding: 0 0 72px;
}

.page-about .about-rail {
  padding-top: 34px;
}

.page-about .about-railhead {
  margin: 0 0 14px;
  font-size: 11.5px;
  letter-spacing: .14em;
  color: var(--tq-sage);
}

.page-about .about-raillist {
  position: relative;
}

.page-about .about-main {
  padding-top: 34px;
  min-width: 0;
}

.page-about .about-railfoot {
  margin-top: 26px;
  padding-top: 16px;
  border-top: 1px solid var(--tq-line-soft);
}

.page-about .about-railfoot__tip {
  margin: 0 0 10px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--tq-sage);
}

.page-about .about-railfoot__link {
  display: inline-block;
  font-size: 13px;
  color: var(--tq-cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--tq-edge);
  padding-bottom: 2px;
  transition: border-color .18s var(--tq-ease), transform .18s var(--tq-ease);
}

.page-about .about-railfoot__link:hover {
  border-color: var(--tq-cyan);
  transform: translateX(3px);
}

/* ---------- 章节 ---------- */

.page-about .about-chapter {
  padding: 46px 0;
  border-top: 1px solid var(--tq-line-soft);
}

.page-about .about-chapter:first-child {
  border-top: 1px solid var(--tq-line);
  padding-top: 4px;
}

.page-about .about-chapter--close {
  border-bottom: 1px solid var(--tq-line-soft);
}

.page-about .about-chapter__head {
  display: grid;
  grid-template-columns: var(--about-chapter-no-w) minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  margin-bottom: 24px;
}

.page-about .about-chapter__no {
  font-family: var(--tq-font-mono);
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  color: var(--tq-cyan);
  letter-spacing: -.02em;
  padding-top: 2px;
}

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

.page-about .about-chapter__titles h2 {
  margin: 6px 0 0;
}

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

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

.page-about .about-p {
  margin: 0;
  font-size: 16px;
  line-height: 1.78;
  color: var(--tq-mist);
  max-width: 680px;
}

.page-about .about-p + .about-p {
  margin-top: 1.05em;
}

/* ---------- 图文排布 ---------- */

.page-about .about-chapter__body--media {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
  align-items: start;
}

.page-about .about-figure {
  margin: 0;
  min-width: 0;
}

.page-about .about-figure--wide {
  margin-top: 30px;
}

.page-about .about-figure .tq-media {
  border: 1px solid var(--tq-edge);
}

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

.page-about .about-figure .tq-media__cap {
  display: block;
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--tq-sage);
}

/* ---------- 阶段对照 ---------- */

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

.page-about .about-compare__col {
  background: var(--about-card-bg);
  padding: 20px 18px;
}

.page-about .about-compare__tag {
  margin: 0 0 10px;
  font-family: var(--tq-font-mono);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: .06em;
  color: var(--tq-cyan);
}

.page-about .about-compare__txt {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--tq-mist);
}

/* ---------- 角色表格 ---------- */

.page-about .about-tablewrap {
  margin-top: 26px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-about .about-roles {
  width: 100%;
  min-width: 580px;
  border-collapse: collapse;
}

.page-about .about-roles__cap {
  text-align: left;
  padding-bottom: 12px;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--tq-sage);
}

.page-about .about-roles th,
.page-about .about-roles td {
  text-align: left;
  vertical-align: top;
  padding: 14px 16px;
  font-size: 14.5px;
  line-height: 1.7;
  border-bottom: 1px solid var(--tq-line-soft);
}

.page-about .about-roles thead th {
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: .1em;
  color: var(--tq-sage);
  border-bottom: 1px solid var(--tq-cyan);
  white-space: nowrap;
}

.page-about .about-roles tbody th {
  color: var(--tq-mist);
  font-weight: 600;
  white-space: nowrap;
}

.page-about .about-roles tbody td {
  color: var(--tq-mist);
  opacity: .88;
}

.page-about .about-roles tbody tr {
  transition: background-color .18s var(--tq-ease), box-shadow .18s var(--tq-ease);
}

.page-about .about-roles tbody tr:hover {
  background: var(--tq-cyan-soft);
  box-shadow: inset 0 0 0 1px var(--tq-edge);
}

.page-about .about-chapter .tq-note {
  margin-top: 22px;
}

/* ---------- 赛季产出 ---------- */

.page-about .about-season {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
  align-items: start;
}

.page-about .about-season__hero {
  border-left: 1px solid var(--tq-edge);
  padding-left: 20px;
}

.page-about .about-bleed {
  display: block;
  font-family: var(--tq-font-mono);
  font-size: clamp(64px, 16vw, 128px);
  font-weight: 700;
  line-height: .86;
  letter-spacing: -.035em;
  color: var(--tq-amber);
  font-variant-numeric: tabular-nums;
  opacity: .96;
  transition: filter .22s var(--tq-ease);
}

.page-about .about-bleed.is-lit {
  filter: brightness(1.12);
}

.page-about .about-season__cap {
  margin: 14px 0 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--tq-sage);
  max-width: 300px;
}

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

.page-about .about-stats {
  margin-top: 32px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(158px, 1fr));
  gap: 1px;
  background: var(--tq-line-soft);
  border: 1px solid var(--tq-line-soft);
}

.page-about .about-stats__cell {
  background: var(--about-card-bg);
  padding: 18px 16px;
}

.page-about .about-stats__v {
  display: block;
  font-family: var(--tq-font-mono);
  font-size: 24px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--tq-mist);
  font-variant-numeric: tabular-nums;
}

.page-about .about-stats__l {
  display: block;
  margin-top: 8px;
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--tq-sage);
}

/* ---------- 结尾引导 ---------- */

.page-about .about-next {
  margin-top: 48px;
  padding: 32px 24px;
  border: 1px solid var(--tq-edge);
}

.page-about .about-next__title {
  margin: 0 0 22px;
}

.page-about .about-next__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-about .about-next__card {
  text-decoration: none;
  color: inherit;
  display: block;
}

.page-about .about-next__no {
  font-family: var(--tq-font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--tq-cyan);
  margin-right: 10px;
  letter-spacing: .04em;
}

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

/* ---------- 响应式 ---------- */

@media (max-width: 899px) {
  .page-about .about-scale {
    display: flex;
    gap: 0;
    padding: 16px 0 4px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
  }

  .page-about .about-scale::before {
    display: none;
  }

  .page-about .about-scale__node {
    flex: 0 0 auto;
    min-width: 138px;
    padding: 0 18px 0 14px;
    border-left: 1px solid var(--tq-edge);
    gap: 5px;
  }

  .page-about .about-scale__node::before {
    display: none;
  }

  .page-about .about-hero__facts {
    grid-template-columns: 1fr;
  }

  .page-about .about-chapter__head {
    grid-template-columns: 42px minmax(0, 1fr);
    gap: 12px;
  }

  .page-about .about-chapter__no {
    font-size: 24px;
  }

  .page-about .about-next {
    padding: 26px 18px;
  }
}

@media (min-width: 620px) {
  .page-about .about-hero__facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

@media (min-width: 900px) {
  .page-about .about-hero {
    padding: 40px 0 64px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: var(--about-rail-w) minmax(0, 1fr);
    gap: 48px;
    align-items: start;
  }

  .page-about .about-hero .tq-lede {
    max-width: 640px;
  }

  .page-about .about-rail {
    position: sticky;
    top: calc(var(--tq-header-h) + 26px);
    align-self: start;
  }

  .page-about .about-main {
    padding-left: 36px;
  }

  .page-about .about-chapter__body--media {
    grid-template-columns: 300px minmax(0, 1fr);
    gap: 32px;
  }

  .page-about .about-chapter__body--media.about-flip {
    grid-template-columns: minmax(0, 1fr) 300px;
  }

  .page-about .about-season {
    grid-template-columns: 260px minmax(0, 1fr);
    gap: 40px;
  }
}

@media (min-width: 1180px) {
  .page-about .about-chapter__body--media {
    grid-template-columns: 340px minmax(0, 1fr);
    gap: 40px;
  }

  .page-about .about-chapter__body--media.about-flip {
    grid-template-columns: minmax(0, 1fr) 340px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-railfoot__link,
  .page-about .about-roles tbody tr,
  .page-about .about-bleed {
    transition: none;
  }

  .page-about .about-railfoot__link:hover {
    transform: none;
  }
}