.page-about {
  --ab-gap: clamp(18px, 3vw, 40px);
  --ab-sec-pad: clamp(44px, 7vw, 104px);
  display: block;
  color: var(--wm-ink);
  font-family: var(--wm-font-body);
  background: var(--wm-void);
  overflow-x: clip;
}

.page-about .wm-shell {
  padding-inline: var(--wm-gutter);
}

.page-about p {
  margin: 0;
  font-size: 16px;
  line-height: 1.7;
}

/* ---------- 首屏 ---------- */

.page-about .ab-hero {
  position: relative;
  padding-top: clamp(18px, 3vw, 30px);
  padding-bottom: clamp(34px, 5vw, 68px);
  overflow: hidden;
  background:
    radial-gradient(120% 100% at 88% -10%, rgba(0, 229, 255, 0.15), transparent 58%),
    radial-gradient(90% 80% at 4% 112%, rgba(255, 106, 26, 0.08), transparent 60%),
    linear-gradient(180deg, var(--wm-panel) 0%, var(--wm-void) 100%);
}

.page-about .ab-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: linear-gradient(90deg,
    var(--wm-cyan) 0 24%,
    var(--wm-orange) 24% 30%,
    var(--wm-line) 30% 100%);
}

.page-about .ab-hero__grid {
  display: grid;
  gap: var(--ab-gap);
  padding-top: clamp(26px, 5vw, 58px);
}

.page-about .ab-hero__title {
  margin: 12px 0 0;
  font-family: var(--wm-font-head);
  font-weight: 700;
  font-size: clamp(38px, 9vw, 82px);
  line-height: 1.02;
  letter-spacing: -0.01em;
}

.page-about .ab-hero__title em {
  display: block;
  margin-top: 12px;
  font-style: normal;
  font-size: 0.4em;
  font-weight: 600;
  letter-spacing: 0.32em;
  color: var(--wm-cyan);
}

.page-about .ab-lead {
  margin-top: clamp(16px, 2.4vw, 26px);
  max-width: 62ch;
  font-size: clamp(15px, 1.5vw, 18px);
  line-height: 1.75;
  color: var(--wm-ink);
}

.page-about .ab-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 32px);
}

/* 档案索引 */

.page-about .ab-hero__index {
  border: 1px solid var(--wm-line);
  background: linear-gradient(180deg, rgba(17, 26, 51, 0.9), rgba(11, 18, 38, 0.9));
  padding: 16px 18px 18px;
}

.page-about .ab-index__head {
  font-size: 11px;
  letter-spacing: 0.28em;
  color: var(--wm-cyan-dim);
  margin-bottom: 10px;
}

.page-about .ab-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--wm-line);
  border-top: 1px solid var(--wm-line);
}

.page-about .ab-index__item {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 11px 2px;
  background: var(--wm-panel);
  color: var(--wm-ink);
  text-decoration: none;
  transition: color 0.2s var(--wm-ease), padding-left 0.2s var(--wm-ease);
}

.page-about .ab-index__num {
  font-size: 11px;
  color: var(--wm-cyan-dim);
  letter-spacing: 0.12em;
}

.page-about .ab-index__label {
  font-size: 15px;
}

.page-about .ab-index__item:hover,
.page-about .ab-index__item:focus-visible {
  color: var(--wm-cyan);
  padding-left: 8px;
}

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

/* ---------- 数字条 ---------- */

.page-about .ab-metrics {
  border-bottom: 1px solid var(--wm-line);
  background: var(--wm-panel);
}

.page-about .ab-metrics__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.page-about .ab-metrics__item {
  padding: 18px 0;
  border-top: 1px solid var(--wm-line);
  display: grid;
  gap: 4px;
}

.page-about .ab-metrics__item:nth-child(odd) {
  border-right: 1px solid var(--wm-line);
  padding-right: 14px;
}

.page-about .ab-metrics__item:nth-child(even) {
  padding-left: 14px;
}

.page-about .ab-metrics__num {
  font-size: clamp(28px, 6vw, 44px);
  line-height: 1;
  color: var(--wm-gold);
  font-variant-numeric: tabular-nums;
}

.page-about .ab-metrics__label {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--wm-muted);
}

/* ---------- 章节通用 ---------- */

.page-about .ab-sec {
  border-bottom: 1px solid var(--wm-line);
  padding-block: var(--ab-sec-pad);
}

.page-about .ab-sec__head {
  position: relative;
  display: grid;
  gap: 12px;
  margin-bottom: clamp(22px, 3.6vw, 44px);
}

.page-about .ab-sec__num {
  color: var(--wm-cyan);
  letter-spacing: 0.22em;
}

.page-about .ab-sec__title {
  margin: 0;
  font-family: var(--wm-font-head);
  font-weight: 700;
  font-size: clamp(26px, 4.6vw, 48px);
  line-height: 1.14;
  letter-spacing: 0.005em;
  max-width: 22ch;
}

.page-about .ab-sec__anno {
  display: none;
}

.page-about .ab-sec__lead {
  max-width: 66ch;
  color: var(--wm-muted);
  margin-bottom: clamp(20px, 3vw, 34px);
}

/* 图片 */

.page-about .ab-figure {
  margin: 0;
  position: relative;
  border: 1px solid var(--wm-line);
  background: var(--wm-panel);
  overflow: hidden;
}

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

.page-about .ab-figure--band {
  margin-top: clamp(28px, 4vw, 52px);
}

.page-about .ab-figure--team {
  margin-top: clamp(26px, 4vw, 48px);
}

/* ---------- 起点 ---------- */

.page-about .ab-origin__grid {
  display: grid;
  gap: clamp(20px, 3vw, 38px);
}

.page-about .ab-origin__text {
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-about .ab-chips {
  list-style: none;
  margin: 6px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .ab-chips__item {
  font-size: 13px;
  padding: 7px 13px;
  border: 1px solid var(--wm-line);
  border-radius: var(--wm-r);
  color: var(--wm-muted);
  background: rgba(17, 26, 51, 0.6);
}

/* ---------- 时间轴 ---------- */

.page-about .ab-timeline {
  list-style: none;
  margin: 0;
  padding: 0 0 0 26px;
  border-left: 1px solid var(--wm-line);
  display: grid;
  gap: 30px;
}

.page-about .ab-tl__item {
  position: relative;
}

.page-about .ab-tl__item::before {
  content: "";
  position: absolute;
  left: -31px;
  top: 7px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--wm-void);
  border: 2px solid var(--wm-cyan-dim);
  transition: border-color 0.2s var(--wm-ease), background 0.2s var(--wm-ease);
}

.page-about .ab-tl__item--live::before {
  border-color: var(--wm-orange);
  background: var(--wm-orange);
}

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

.page-about .ab-tl__ver {
  display: inline-block;
  font-size: 30px;
  line-height: 1;
  letter-spacing: 0.04em;
  color: var(--wm-cyan);
  font-variant-numeric: tabular-nums;
}

.page-about .ab-tl__item--live .ab-tl__ver {
  color: var(--wm-orange);
}

.page-about .ab-tl__name {
  margin: 10px 0 6px;
  font-family: var(--wm-font-head);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.page-about .ab-tl__desc {
  font-size: 15px;
  line-height: 1.7;
  color: var(--wm-muted);
}

/* ---------- 团队 ---------- */

.page-about .ab-team__grid {
  display: grid;
  gap: 1px;
  background: var(--wm-line);
  border: 1px solid var(--wm-line);
}

.page-about .ab-team__cell {
  background: var(--wm-panel);
  padding: clamp(18px, 2.4vw, 28px);
  display: grid;
  gap: 6px;
  align-content: start;
  transition: background 0.2s var(--wm-ease);
}

.page-about .ab-team__cell:hover {
  background: var(--wm-raised);
}

.page-about .ab-team__num {
  font-size: clamp(30px, 4vw, 42px);
  line-height: 1;
  color: var(--wm-gold);
  font-variant-numeric: tabular-nums;
}

.page-about .ab-team__role {
  font-family: var(--wm-font-head);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--wm-ink);
}

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

.page-about .ab-rhythm {
  margin-top: clamp(20px, 3vw, 34px);
  display: grid;
  gap: 1px;
  background: var(--wm-line);
  border-top: 1px solid var(--wm-line);
  border-bottom: 1px solid var(--wm-line);
}

.page-about .ab-rhythm__item {
  background: var(--wm-void);
  padding: 16px 0;
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
}

.page-about .ab-rhythm__num {
  font-size: 24px;
  color: var(--wm-cyan);
  font-variant-numeric: tabular-nums;
  min-width: 74px;
}

.page-about .ab-rhythm__label {
  font-size: 14px;
  color: var(--wm-muted);
}

/* ---------- 数据体系 ---------- */

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

.page-about .ab-stack__item {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 6px 14px;
  padding: 20px 0;
  border-bottom: 1px solid var(--wm-line);
  transition: background 0.2s var(--wm-ease);
}

.page-about .ab-stack__item:hover {
  background: rgba(17, 26, 51, 0.55);
}

.page-about .ab-stack__idx {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--wm-cyan-dim);
  padding-top: 4px;
}

.page-about .ab-stack__name {
  margin: 0;
  font-family: var(--wm-font-head);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.page-about .ab-stack__desc {
  grid-column: 2;
  font-size: 15px;
  line-height: 1.7;
  color: var(--wm-muted);
}

.page-about .ab-stack__meta {
  grid-column: 2;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--wm-gold);
}

/* ---------- 合作与认可 ---------- */

.page-about .ab-partners {
  display: grid;
  gap: clamp(22px, 3.4vw, 44px);
}

.page-about .ab-partners__title {
  margin: 0 0 14px;
  font-family: var(--wm-font-head);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--wm-cyan);
}

.page-about .ab-tags {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
}

.page-about .ab-tags .wm-tag {
  padding: 8px 14px;
  border: 1px solid var(--wm-line);
  border-radius: var(--wm-r);
  background: var(--wm-panel);
  color: var(--wm-ink);
  font-size: 13px;
  letter-spacing: 0.02em;
  transition: border-color 0.2s var(--wm-ease), background 0.2s var(--wm-ease);
}

.page-about .ab-tags .wm-tag:hover {
  border-color: var(--wm-cyan);
  background: var(--wm-raised);
}

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

.page-about .ab-honor__item {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.65;
  color: var(--wm-muted);
}

.page-about .ab-honor__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 8px;
  height: 2px;
  background: var(--wm-orange);
}

.page-about .ab-scale {
  list-style: none;
  margin: clamp(28px, 4vw, 46px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--wm-line);
  border: 1px solid var(--wm-line);
}

.page-about .ab-scale__item {
  background: var(--wm-panel);
  padding: clamp(16px, 2.4vw, 26px);
  display: grid;
  gap: 6px;
}

.page-about .ab-scale__num {
  font-size: clamp(26px, 4vw, 40px);
  line-height: 1;
  color: var(--wm-ink);
  font-variant-numeric: tabular-nums;
}

.page-about .ab-scale__unit {
  font-size: 0.46em;
  margin-left: 4px;
  color: var(--wm-cyan);
  letter-spacing: 0.04em;
}

.page-about .ab-scale__label {
  font-size: 13px;
  color: var(--wm-muted);
}

/* ---------- 下一赛季 ---------- */

.page-about .ab-next__grid {
  display: grid;
  gap: 1px;
  background: var(--wm-line);
  border: 1px solid var(--wm-line);
}

.page-about .ab-next__card {
  background: var(--wm-panel);
  padding: clamp(20px, 2.6vw, 30px);
  display: grid;
  gap: 10px;
  align-content: start;
  transition: background 0.2s var(--wm-ease), border-color 0.2s var(--wm-ease);
}

.page-about .ab-next__card:hover {
  background: var(--wm-raised);
}

.page-about .ab-next__name {
  margin: 0;
  font-family: var(--wm-font-head);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.page-about .ab-next__card:hover .ab-next__name {
  color: var(--wm-cyan);
}

.page-about .ab-next__desc {
  font-size: 15px;
  line-height: 1.7;
  color: var(--wm-muted);
}

/* ---------- 结尾入口 ---------- */

.page-about .ab-cta {
  padding-block: clamp(44px, 7vw, 96px);
  background:
    linear-gradient(90deg, rgba(0, 229, 255, 0.10), transparent 46%),
    var(--wm-raised);
  border-bottom: 1px solid var(--wm-line);
}

.page-about .ab-cta__title {
  margin: 0;
  font-family: var(--wm-font-head);
  font-weight: 700;
  font-size: clamp(26px, 4.4vw, 44px);
  line-height: 1.15;
  max-width: 24ch;
}

.page-about .ab-cta__text {
  margin-top: 14px;
  max-width: 56ch;
  font-size: 16px;
  color: var(--wm-muted);
}

.page-about .ab-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 32px);
}

/* ---------- 平板与桌面 ---------- */

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

  .page-about .ab-metrics__item {
    padding: 22px 18px;
    border-right: 1px solid var(--wm-line);
  }

  .page-about .ab-metrics__item:first-child {
    padding-left: 0;
  }

  .page-about .ab-metrics__item:last-child {
    border-right: 0;
  }

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

  .page-about .ab-rhythm {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    border: 1px solid var(--wm-line);
  }

  .page-about .ab-rhythm__item {
    padding: 18px 20px;
    border-right: 1px solid var(--wm-line);
    display: grid;
    gap: 6px;
  }

  .page-about .ab-rhythm__item:last-child {
    border-right: 0;
  }

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

  .page-about .ab-scale {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 960px) {
  .page-about p {
    font-size: 17px;
  }

  .page-about .ab-hero__grid {
    grid-template-columns: minmax(0, 1.75fr) minmax(300px, 0.85fr);
    align-items: end;
    gap: clamp(32px, 4vw, 64px);
  }

  .page-about .ab-sec__head {
    padding-right: 72px;
    margin-bottom: clamp(30px, 4vw, 56px);
  }

  .page-about .ab-sec__anno {
    display: block;
    position: absolute;
    right: 0;
    top: 4px;
    writing-mode: vertical-rl;
    font-family: var(--wm-font-mono);
    font-size: 11px;
    letter-spacing: 0.26em;
    color: var(--wm-muted);
    text-transform: uppercase;
  }

  .page-about .ab-origin__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
    align-items: start;
    gap: clamp(30px, 4vw, 64px);
  }

  .page-about .ab-team__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .ab-partners {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  }

  .page-about .ab-timeline {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0;
    padding-left: 0;
    border-left: 0;
    border-top: 1px solid var(--wm-line);
  }

  .page-about .ab-tl__item {
    padding: 30px 26px 0 0;
  }

  .page-about .ab-tl__item::before {
    left: 0;
    top: -6px;
  }

  .page-about .ab-stack__item {
    grid-template-columns: 56px minmax(150px, 0.7fr) minmax(0, 2fr) auto;
    align-items: baseline;
    gap: 18px;
    padding: 22px 8px;
  }

  .page-about .ab-stack__idx {
    padding-top: 0;
  }

  .page-about .ab-stack__desc,
  .page-about .ab-stack__meta {
    grid-column: auto;
  }

  .page-about .ab-stack__meta {
    text-align: right;
    white-space: nowrap;
  }

  .page-about .ab-next__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 1200px) {
  .page-about .ab-hero__title {
    font-size: 82px;
  }

  .page-about .ab-sec__title {
    font-size: 48px;
  }
}