.page-about {
  --ab-pad: 18px;
  --ab-sticky-top: calc(var(--bar-h) + 20px);
  display: block;
  overflow-x: clip;
}

.page-about .ab-lead {
  padding: 26px 0 4px;
  background:
    radial-gradient(120% 90% at 8% 0%, rgba(51, 224, 208, .10), transparent 58%),
    radial-gradient(90% 80% at 96% 6%, rgba(30, 143, 90, .20), transparent 62%);
}

.page-about .ab-lead__text {
  max-width: 46em;
}

.page-about .ab-lead__title {
  font-family: var(--font-display);
  font-size: clamp(32px, 6.4vw, 60px);
  line-height: 1.04;
  letter-spacing: -.01em;
  color: var(--paper);
  margin: 12px 0 16px;
  text-wrap: balance;
}

.page-about .ab-lead__intro {
  font-size: 17px;
  line-height: 1.75;
  color: rgba(232, 241, 248, .86);
  margin: 0 0 20px;
}

.page-about .ab-lead__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* 比分式数字带 */
.page-about .ab-figures {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin: 30px 0 0;
  padding: 0;
}

.page-about .ab-figure {
  border: var(--bw) solid var(--line-strong);
  background: linear-gradient(155deg, rgba(6, 23, 38, .94), rgba(11, 33, 54, .7));
  box-shadow: var(--shadow-hard);
  padding: 14px 16px 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

.page-about .ab-figure--hero {
  border-color: rgba(51, 224, 208, .6);
  background: linear-gradient(155deg, rgba(30, 143, 90, .34), rgba(6, 23, 38, .92) 68%);
}

.page-about .ab-figure__value {
  display: flex;
  align-items: baseline;
  gap: .25em;
  margin: 0;
}

.page-about .ab-figure__num {
  font-family: var(--font-mono);
  font-size: clamp(30px, 4.6vw, 50px);
  line-height: 1;
  letter-spacing: .01em;
  color: var(--cyan);
}

.page-about .ab-figure--hero .ab-figure__num {
  color: var(--score);
}

.page-about .ab-figure__label {
  margin: 0;
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--graphite);
}

/* 分屏骨架 */
.page-about .ab-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
  margin-top: 48px;
}

.page-about .ab-split__main {
  min-width: 0;
}

/* 档案卡 */
.page-about .ab-card {
  border: var(--bw) solid rgba(51, 224, 208, .5);
  background: linear-gradient(180deg, #0d2b45 0%, #061726 100%);
  box-shadow: var(--shadow-hard);
  padding: 20px 18px 20px;
  min-width: 0;
}

.page-about .ab-card__tag {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--orange);
  margin: 0 0 8px;
}

.page-about .ab-card__title {
  font-family: var(--font-display);
  font-size: 21px;
  line-height: 1.3;
  color: var(--paper);
  margin: 0 0 16px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.page-about .ab-rows {
  margin: 0;
  display: grid;
  gap: 0;
}

.page-about .ab-row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 4px 12px;
  padding: 9px 0;
  border-bottom: 1px dashed var(--line);
}

.page-about .ab-row:last-child {
  border-bottom: 0;
}

.page-about .ab-row__k {
  font-size: 13px;
  color: var(--graphite);
  letter-spacing: .04em;
  margin: 0;
}

.page-about .ab-row__v {
  margin: 0;
  font-size: 14px;
  color: var(--paper);
  text-align: right;
}

.page-about .ab-row__num {
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--cyan);
  letter-spacing: .03em;
}

.page-about .ab-nav {
  display: grid;
  gap: 6px;
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.page-about .ab-nav__link {
  display: flex;
  align-items: center;
  gap: 10px;
  justify-content: flex-start;
  padding: 8px 10px;
  font-size: 14px;
  color: var(--paper);
  text-decoration: none;
  border-left: 3px solid var(--pitch);
  background: rgba(30, 143, 90, .12);
  transition: background var(--ease), border-color var(--ease), color var(--ease);
}

.page-about .ab-nav__link:hover,
.page-about .ab-nav__link:focus-visible {
  border-left-color: var(--orange);
  background: rgba(255, 122, 41, .14);
  color: var(--orange);
}

.page-about .ab-nav__no {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--cyan);
  letter-spacing: .1em;
}

/* 内容区块节奏 */
.page-about .ab-block {
  border-top: 1px solid var(--line);
  margin-top: 40px;
  padding-top: 34px;
}

.page-about .ab-block:first-child {
  border-top: 0;
  margin-top: 0;
  padding-top: 0;
}

.page-about .ab-block__lead {
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.75;
  color: rgba(232, 241, 248, .78);
  margin: 12px 0 0;
}

.page-about .ab-link {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color var(--ease);
}

.page-about .ab-link:hover,
.page-about .ab-link:focus-visible {
  color: var(--orange);
}

/* 年份锚点 */
.page-about .ab-years {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 22px 0 26px;
}

.page-about .ab-year {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: .08em;
  color: var(--cyan);
  text-decoration: none;
  padding: 6px 14px;
  border: 2px solid rgba(51, 224, 208, .38);
  background: rgba(6, 23, 38, .7);
  transition: background var(--ease), color var(--ease), border-color var(--ease);
}

.page-about .ab-year:hover,
.page-about .ab-year:focus-visible {
  background: var(--cyan);
  color: var(--ink-deep);
  border-color: var(--cyan);
}

/* 时间线 */
.page-about .ab-timeline {
  list-style: none;
  position: relative;
  margin: 0;
  padding: 0 0 0 34px;
}

.page-about .ab-timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 12px;
  width: 3px;
  background: linear-gradient(180deg, var(--pitch) 0%, var(--pitch) 46%, var(--tactic) 76%, var(--cyan) 100%);
  border-radius: 2px;
}

.page-about .ab-node {
  position: relative;
  padding-bottom: 30px;
}

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

.page-about .ab-node::before {
  content: "";
  position: absolute;
  left: -34px;
  top: 5px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--pitch);
  box-shadow: 0 0 0 4px rgba(30, 143, 90, .22);
}

.page-about .ab-node--tactic::before {
  background: var(--tactic);
  box-shadow: 0 0 0 4px rgba(110, 92, 230, .24);
}

.page-about .ab-node--now::before {
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(51, 224, 208, .26);
}

.page-about .ab-node__year {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .16em;
  color: var(--cyan);
  border: 2px solid rgba(51, 224, 208, .4);
  padding: 2px 10px;
  margin-bottom: 10px;
}

.page-about .ab-node--tactic .ab-node__year {
  color: #b9b2f8;
  border-color: rgba(110, 92, 230, .6);
}

.page-about .ab-node__title {
  font-family: var(--font-display);
  font-size: 21px;
  line-height: 1.32;
  color: var(--paper);
  margin: 0 0 8px;
}

.page-about .ab-node__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(232, 241, 248, .78);
  max-width: 60ch;
}

/* 内容生产三步 */
.page-about .ab-flow__media {
  margin: 22px 0 0;
  border-radius: 0;
}

.page-about .ab-flow {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin: 22px 0 0;
  padding: 0;
}

.page-about .ab-step {
  border: 2px solid var(--line-strong);
  border-top: 5px solid var(--pitch);
  background: linear-gradient(160deg, rgba(11, 33, 54, .9), rgba(6, 23, 38, .86));
  padding: 16px 16px 18px;
  min-width: 0;
  transition: transform var(--ease), border-top-color var(--ease), box-shadow var(--ease);
}

.page-about .ab-step:hover {
  transform: translateY(-3px);
  border-top-color: var(--cyan);
  box-shadow: var(--shadow-soft);
}

.page-about .ab-step__no {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .16em;
  color: var(--orange);
}

.page-about .ab-step__title {
  font-family: var(--font-display);
  font-size: 19px;
  color: var(--paper);
  margin: 6px 0 8px;
}

.page-about .ab-step__text {
  margin: 0 0 12px;
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(232, 241, 248, .78);
}

.page-about .ab-step__meta {
  margin: 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--graphite);
  padding-top: 10px;
  border-top: 1px dashed var(--line);
  opacity: .72;
  transition: opacity var(--ease), color var(--ease);
}

.page-about .ab-step:hover .ab-step__meta {
  opacity: 1;
  color: var(--cyan);
}

.page-about .ab-step__num {
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--cyan);
}

/* 赛事版图 */
.page-about .ab-map__filter {
  margin: 20px 0 0;
  flex-wrap: wrap;
}

.page-about .ab-map__count {
  font-size: 13px;
  color: var(--graphite);
  letter-spacing: .04em;
  margin-left: auto;
  align-self: center;
}

.page-about .ab-map__count .num {
  font-family: var(--font-mono);
  color: var(--cyan);
  font-size: 15px;
}

.page-about .ab-map__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: 18px;
}

.page-about .ab-map-card {
  border: 2px solid var(--line);
  border-left: 5px solid var(--pitch);
  background: linear-gradient(150deg, rgba(11, 33, 54, .92), rgba(6, 23, 38, .82));
  padding: 14px 15px 16px;
  min-width: 0;
  transition: border-left-color var(--ease), transform var(--ease);
}

.page-about .ab-map-card:hover {
  border-left-color: var(--cyan);
  transform: translateX(3px);
}

.page-about .ab-map-card[hidden] {
  display: none;
}

.page-about .ab-map-card__title {
  font-family: var(--font-display);
  font-size: 18px;
  color: var(--paper);
  margin: 10px 0 8px;
}

.page-about .ab-map-card__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(232, 241, 248, .76);
}

/* 海南 · 海口 */
.page-about .ab-local {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-top: 22px;
}

.page-about .ab-local__media {
  margin: 0;
  border-radius: 0;
}

.page-about .ab-local__rows {
  margin: 0;
  display: grid;
  gap: 0;
  align-content: start;
  border: 2px solid var(--line-strong);
  border-left: 5px solid var(--orange);
  background: rgba(6, 23, 38, .78);
  padding: 6px 16px 10px;
}

.page-about .ab-local__row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 4px 14px;
  padding: 10px 0;
  border-bottom: 1px dashed var(--line);
}

.page-about .ab-local__row:last-child {
  border-bottom: 0;
}

.page-about .ab-local__row dt {
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--graphite);
}

.page-about .ab-local__row dd {
  margin: 0;
  font-size: 14px;
  color: var(--paper);
  text-align: right;
  word-break: break-word;
}

.page-about .ab-local__mono {
  font-family: var(--font-mono);
  color: var(--cyan);
  letter-spacing: .03em;
}

.page-about .ab-local__note {
  margin: 20px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(232, 241, 248, .78);
  padding: 14px 16px;
  border-left: 4px solid var(--score);
  background: rgba(255, 200, 69, .07);
  max-width: 64ch;
}

/* 响应式 */
@media (min-width: 640px) {
  .page-about .ab-figures {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

@media (min-width: 980px) {
  .page-about {
    --ab-sticky-top: calc(var(--bar-h) + 24px);
  }

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

  .page-about .ab-figures {
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
  }

  .page-about .ab-split {
    grid-template-columns: minmax(272px, 34%) 1fr;
    gap: 44px;
    align-items: start;
  }

  .page-about .ab-card {
    position: sticky;
    top: var(--ab-sticky-top);
    max-height: calc(100vh - var(--ab-sticky-top) - 24px);
    overflow-y: auto;
  }

  .page-about .ab-local {
    grid-template-columns: minmax(0, 40%) minmax(0, 1fr);
    align-items: start;
  }
}

@media (min-width: 1240px) {
  .page-about .ab-map__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .ab-step,
  .page-about .ab-map-card,
  .page-about .ab-year,
  .page-about .ab-step__meta {
    transition: none;
  }

  .page-about .ab-step:hover,
  .page-about .ab-map-card:hover {
    transform: none;
  }
}