/* ===== 品牌价值页 · page-about ===== */

.page-about {
  --ab-hair: rgba(147, 162, 184, .16);
  --ab-hair-strong: rgba(147, 162, 184, .3);
  --ab-soft: #c3cee0;
  display: block;
  color: var(--cf-ink);
}

/* ---------- 面包屑 ---------- */
.page-about .ab-crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-top: 20px;
  font-family: var(--cf-font-mono);
  font-size: 12px;
  letter-spacing: .05em;
  color: var(--cf-muted);
}

.page-about .ab-crumb a {
  color: var(--cf-muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--cf-t), border-color var(--cf-t);
}

.page-about .ab-crumb a:hover,
.page-about .ab-crumb a:focus-visible {
  color: var(--cf-cyan);
  border-bottom-color: rgba(34, 224, 255, .5);
}

.page-about .ab-crumb__sep {
  color: rgba(147, 162, 184, .4);
}

.page-about .ab-crumb__here {
  color: var(--cf-ink);
}

/* ---------- 首屏 ---------- */
.page-about .ab-hero {
  position: relative;
  padding: 30px 0 52px;
  overflow: hidden;
  isolation: isolate;
}

.page-about .ab-hero__glow {
  position: absolute;
  inset: -34% -12% -22%;
  background:
    radial-gradient(circle at 16% 24%, rgba(34, 224, 255, .18), transparent 44%),
    radial-gradient(circle at 84% 6%, rgba(154, 92, 255, .18), transparent 46%),
    radial-gradient(circle at 58% 98%, rgba(255, 194, 75, .08), transparent 46%);
  pointer-events: none;
  z-index: 0;
}

.page-about .ab-hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(27, 42, 58, .55) 1px, transparent 1px),
    linear-gradient(90deg, rgba(27, 42, 58, .55) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(ellipse at 22% 34%, #000 0%, transparent 68%);
  mask-image: radial-gradient(ellipse at 22% 34%, #000 0%, transparent 68%);
  pointer-events: none;
  z-index: 0;
}

.page-about .ab-hero__inner {
  position: relative;
  z-index: 1;
}

.page-about .ab-hero__eyebrow {
  margin: 0;
  font-family: var(--cf-font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--cf-cyan);
}

.page-about .ab-hero__title {
  margin: 16px 0 0;
  max-width: 20ch;
  font-size: clamp(30px, 6.4vw, 60px);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--cf-ink);
  text-shadow: 0 0 26px rgba(34, 224, 255, .22);
}

.page-about .ab-hero__lead {
  margin: 20px 0 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ab-soft);
}

.page-about .ab-hero__facts {
  margin: 34px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--ab-hair);
  border: 1px solid var(--ab-hair);
  border-radius: var(--cf-radius);
  overflow: hidden;
}

.page-about .ab-fact {
  padding: 18px 16px 20px;
  background: var(--cf-panel);
  transition: background var(--cf-t);
}

.page-about .ab-fact:hover {
  background: #0E1621;
}

.page-about .ab-fact__v {
  display: block;
  font-family: var(--cf-font-mono);
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.01em;
  color: var(--cf-cyan);
}

.page-about .ab-fact:nth-child(2) .ab-fact__v { color: var(--cf-violet); }
.page-about .ab-fact:nth-child(3) .ab-fact__v { color: var(--cf-gold); }
.page-about .ab-fact:nth-child(4) .ab-fact__v { color: var(--cf-mint); }

.page-about .ab-fact__k {
  display: block;
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--cf-muted);
}

/* ---------- 主布局：左轴 + 右内容 ---------- */
.page-about .ab-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  padding: 44px 0 68px;
}

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

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

/* ---------- 章节骨架 ---------- */
.page-about .ab-sec {
  position: relative;
  padding-bottom: 52px;
  scroll-margin-top: 150px;
}

.page-about .ab-sec + .ab-sec {
  padding-top: 52px;
  border-top: 1px solid var(--ab-hair);
}

.page-about .ab-sec:last-of-type {
  padding-bottom: 44px;
}

.page-about .ab-sec__head {
  display: grid;
  gap: 10px;
  margin-bottom: 26px;
}

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

.page-about .ab-sec__title {
  position: relative;
  margin: 0;
  padding-left: 20px;
  font-size: clamp(23px, 4.6vw, 36px);
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: -0.01em;
  color: var(--cf-ink);
}

.page-about .ab-sec__title::before {
  content: "";
  position: absolute;
  left: 0;
  top: .48em;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--cf-cyan);
  box-shadow: 0 0 14px rgba(34, 224, 255, .75);
}

.page-about #ab-pick .ab-sec__title::before {
  background: var(--cf-violet);
  box-shadow: 0 0 14px rgba(154, 92, 255, .8);
}

.page-about #ab-audit .ab-sec__title::before {
  background: var(--cf-gold);
  box-shadow: 0 0 14px rgba(255, 194, 75, .75);
}

.page-about #ab-tech .ab-sec__title::before {
  background: var(--cf-mint);
  box-shadow: 0 0 14px rgba(43, 227, 166, .75);
}

.page-about #ab-partners .ab-sec__title::before {
  background: var(--cf-cyan);
  box-shadow: 0 0 14px rgba(34, 224, 255, .75);
}

.page-about #ab-score .ab-sec__title::before {
  background: var(--cf-gold);
  box-shadow: 0 0 14px rgba(255, 194, 75, .75);
}

.page-about .ab-sec__lead {
  margin: 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--cf-muted);
}

.page-about .ab-link {
  color: var(--cf-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(34, 224, 255, .35);
  transition: color var(--cf-t), border-color var(--cf-t);
}

.page-about .ab-link:hover,
.page-about .ab-link:focus-visible {
  color: #7DEEFF;
  border-bottom-color: rgba(34, 224, 255, .85);
}

/* ---------- 01 发展历程 ---------- */
.page-about .ab-history {
  position: relative;
  padding: 22px 18px 22px;
  border-radius: var(--cf-radius);
  overflow: hidden;
  background: var(--cf-panel-2);
}

.page-about .ab-history__bg {
  position: absolute;
  inset: 0;
  margin: 0;
  z-index: 0;
  pointer-events: none;
}

.page-about .ab-history__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .22;
}

.page-about .ab-history::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background: linear-gradient(180deg, rgba(8, 13, 21, .6) 0%, rgba(8, 13, 21, .9) 70%);
  pointer-events: none;
}

.page-about .ab-tl {
  position: relative;
  z-index: 1;
  margin: 0;
  padding: 4px 0 0 30px;
  list-style: none;
}

.page-about .ab-tl::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 22px;
  width: 1px;
  background: linear-gradient(180deg,
    rgba(34, 224, 255, .6) 0%,
    rgba(154, 92, 255, .45) 52%,
    rgba(255, 194, 75, .7) 100%);
}

.page-about .ab-tl__item {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
  padding-bottom: 26px;
}

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

.page-about .ab-tl__item::before {
  content: "";
  position: absolute;
  left: -30px;
  top: 5px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--cf-panel-2);
  border: 1px solid var(--cf-cyan);
  box-shadow: 0 0 0 4px rgba(8, 13, 21, .95), 0 0 12px rgba(34, 224, 255, .6);
}

.page-about .ab-tl__item--now::before {
  background: var(--cf-gold);
  border-color: var(--cf-gold);
  box-shadow: 0 0 0 4px rgba(8, 13, 21, .95), 0 0 14px rgba(255, 194, 75, .85);
}

.page-about .ab-tl__year {
  font-family: var(--cf-font-mono);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--cf-cyan);
}

.page-about .ab-tl__item--now .ab-tl__year {
  color: var(--cf-gold);
}

.page-about .ab-tl__title {
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--cf-ink);
}

.page-about .ab-tl__text {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--cf-muted);
}

/* ---------- 02 内容挑选 ---------- */
.page-about .ab-pick {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
}

.page-about .ab-pick__text {
  margin: 0 0 20px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ab-soft);
}

.page-about .ab-steps {
  margin: 0 0 20px;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.page-about .ab-step {
  padding: 18px 18px 20px;
  background: var(--cf-panel);
  border: 1px solid var(--ab-hair);
  border-radius: var(--cf-radius-sm);
  transition: transform var(--cf-t), box-shadow var(--cf-t), border-color var(--cf-t);
}

.page-about .ab-step:hover,
.page-about .ab-step:focus-within {
  transform: translateY(-4px);
  border-color: rgba(154, 92, 255, .55);
  box-shadow: var(--cf-glow-violet);
}

.page-about .ab-step__n {
  margin: 0;
  font-family: var(--cf-font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--cf-violet);
}

.page-about .ab-step__title {
  margin: 10px 0 0;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--cf-ink);
}

.page-about .ab-step__text {
  margin: 8px 0 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--cf-muted);
}

.page-about .ab-note {
  padding: 22px 20px 24px;
  border-radius: var(--cf-radius);
  border: 1px solid rgba(154, 92, 255, .3);
  background: linear-gradient(155deg, rgba(154, 92, 255, .16) 0%, rgba(11, 17, 25, .95) 62%);
}

.page-about .ab-note__tag {
  margin: 0;
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  font-family: var(--cf-font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--cf-gold);
  background: rgba(255, 194, 75, .1);
  border: 1px solid rgba(255, 194, 75, .3);
}

.page-about .ab-note__title {
  margin: 14px 0 0;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--cf-ink);
}

.page-about .ab-note__text {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ab-soft);
}

/* ---------- 03 审核团队 ---------- */
.page-about .ab-audit {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
}

.page-about .ab-audit__figure {
  margin: 0;
  border-radius: var(--cf-radius);
  overflow: hidden;
  border: 1px solid var(--ab-hair);
  background: var(--cf-panel-2);
}

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

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

.page-about .ab-stat {
  padding: 18px 16px 20px;
  background: var(--cf-panel);
  transition: background var(--cf-t);
}

.page-about .ab-stat:hover,
.page-about .ab-stat:focus-within {
  background: #0E1621;
}

.page-about .ab-stat__v {
  margin: 0;
  font-family: var(--cf-font-mono);
  font-size: 27px;
  font-weight: 700;
  line-height: 1.05;
  color: var(--cf-gold);
}

.page-about .ab-stat__u {
  margin-left: 3px;
  font-size: 13px;
  font-weight: 500;
  color: var(--cf-muted);
}

.page-about .ab-stat__k {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.5;
  color: var(--cf-ink);
}

.page-about .ab-stat__d {
  margin: 8px 0 0;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--cf-muted);
  transition: opacity var(--cf-t), max-height var(--cf-t), transform var(--cf-t);
}

.page-about .ab-audit__after {
  margin: 22px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ab-soft);
  max-width: 68ch;
}

/* ---------- 04 技术底子 ---------- */
.page-about .ab-tech {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
}

.page-about .ab-tech__item {
  padding: 4px 0 4px 16px;
  border-left: 2px solid rgba(43, 227, 166, .45);
  transition: border-color var(--cf-t), transform var(--cf-t);
}

.page-about .ab-tech__item:hover {
  border-left-color: var(--cf-mint);
  transform: translateX(3px);
}

.page-about .ab-tech__v {
  margin: 0;
  font-family: var(--cf-font-mono);
  font-size: 22px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--cf-mint);
}

.page-about .ab-tech__k {
  margin: 8px 0 0;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--cf-ink);
}

.page-about .ab-tech__t {
  margin: 6px 0 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--cf-muted);
}

/* ---------- 05 合作生态 ---------- */
.page-about .ab-badges {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.page-about .ab-badge {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 108px;
  padding: 16px 16px 18px;
  border-radius: var(--cf-radius-sm);
  border: 1px solid var(--ab-hair);
  background: linear-gradient(160deg, rgba(34, 224, 255, .07) 0%, rgba(11, 17, 25, .95) 58%);
  transition: transform var(--cf-t), border-color var(--cf-t), box-shadow var(--cf-t);
}

.page-about .ab-badge:hover,
.page-about .ab-badge:focus-within {
  transform: translateY(-4px);
  border-color: rgba(34, 224, 255, .5);
  box-shadow: var(--cf-glow-cyan);
}

.page-about .ab-badge--sm {
  background: linear-gradient(160deg, rgba(255, 194, 75, .09) 0%, rgba(11, 17, 25, .95) 58%);
}

.page-about .ab-badge--sm:hover,
.page-about .ab-badge--sm:focus-within {
  border-color: rgba(255, 194, 75, .5);
  box-shadow: 0 0 0 1px rgba(255, 194, 75, .4), 0 12px 30px rgba(255, 194, 75, .14);
}

.page-about .ab-badge--lg {
  background: linear-gradient(160deg, rgba(154, 92, 255, .12) 0%, rgba(11, 17, 25, .95) 58%);
}

.page-about .ab-badge--lg:hover,
.page-about .ab-badge--lg:focus-within {
  border-color: rgba(154, 92, 255, .5);
  box-shadow: var(--cf-glow-violet);
}

.page-about .ab-badge__v {
  font-family: var(--cf-font-mono);
  font-size: 24px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--cf-cyan);
}

.page-about .ab-badge--lg .ab-badge__v { color: var(--cf-violet); }
.page-about .ab-badge--sm .ab-badge__v { color: var(--cf-gold); }

.page-about .ab-badge__u {
  margin-left: 3px;
  font-size: 12px;
  font-weight: 500;
  color: var(--cf-muted);
}

.page-about .ab-badge__k {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--cf-muted);
}

.page-about .ab-partners {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
  margin-top: 26px;
}

.page-about .ab-partners__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ab-soft);
}

.page-about .ab-partners__figure {
  margin: 0;
  border-radius: var(--cf-radius);
  overflow: hidden;
  border: 1px solid var(--ab-hair);
  background: var(--cf-panel-2);
}

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

/* ---------- 06 季度成绩单 ---------- */
.page-about .ab-score {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--ab-hair);
  border: 1px solid var(--ab-hair);
  border-radius: var(--cf-radius);
  overflow: hidden;
}

.page-about .ab-score__item {
  padding: 20px 16px 22px;
  background: var(--cf-panel);
  transition: background var(--cf-t);
}

.page-about .ab-score__item:hover {
  background: #0E1621;
}

.page-about .ab-score__v {
  margin: 0;
  font-family: var(--cf-font-mono);
  font-size: 25px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--cf-ink);
}

.page-about .ab-score__u {
  margin-left: 3px;
  font-size: 13px;
  font-weight: 500;
  color: var(--cf-cyan);
}

.page-about .ab-score__k {
  margin: 10px 0 0;
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--cf-muted);
}

.page-about .ab-score__after {
  margin: 22px 0 0;
  max-width: 66ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ab-soft);
}

/* ---------- 收尾 CTA ---------- */
.page-about .ab-cta {
  margin-top: 8px;
  padding: 30px 22px 32px;
  border-radius: var(--cf-radius);
  border: 1px solid rgba(34, 224, 255, .24);
  background:
    radial-gradient(circle at 88% 12%, rgba(154, 92, 255, .18), transparent 52%),
    linear-gradient(150deg, rgba(34, 224, 255, .09) 0%, rgba(11, 17, 25, .96) 60%);
}

.page-about .ab-cta__title {
  margin: 0;
  font-size: clamp(20px, 3.4vw, 28px);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--cf-ink);
}

.page-about .ab-cta__text {
  margin: 12px 0 0;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ab-soft);
}

.page-about .ab-cta__actions {
  margin-top: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-about .ab-hero {
    padding: 40px 0 60px;
  }

  .page-about .ab-tl__item {
    grid-template-columns: 88px minmax(0, 1fr);
    gap: 18px;
    align-items: start;
  }

  .page-about .ab-tl__year {
    padding-top: 1px;
  }

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

  .page-about .ab-tech {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px 26px;
  }
}

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

  .page-about .ab-fact {
    padding: 20px 20px 22px;
  }

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

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

  .page-about .ab-cta {
    padding: 38px 34px 40px;
  }
}

@media (min-width: 900px) {
  .page-about .ab-audit {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.08fr);
    gap: 26px;
    align-items: start;
  }

  .page-about .ab-partners {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    gap: 28px;
    align-items: center;
  }

  .page-about .ab-badges {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .page-about .ab-badge--lg { grid-column: span 3; }
  .page-about .ab-badge--md { grid-column: span 2; }
  .page-about .ab-badge--sm { grid-column: span 1; }
}

@media (min-width: 960px) {
  .page-about .ab-pick {
    grid-template-columns: minmax(0, 1.62fr) minmax(0, 1fr);
    gap: 36px;
    align-items: start;
  }
}

@media (min-width: 1080px) {
  .page-about .ab-layout {
    grid-template-columns: 78px minmax(0, 1fr);
    gap: 52px;
    padding: 60px 0 88px;
  }

  .page-about .ab-rail {
    display: block;
    position: sticky;
    top: 160px;
    align-self: start;
  }

  .page-about .ab-rail__list {
    position: relative;
    margin: 0;
    padding: 6px 0;
    list-style: none;
  }

  .page-about .ab-rail__list::before {
    content: "";
    position: absolute;
    left: 5px;
    top: 14px;
    bottom: 14px;
    width: 1px;
    background: linear-gradient(180deg,
      rgba(34, 224, 255, .6) 0%,
      rgba(154, 92, 255, .42) 54%,
      rgba(255, 194, 75, .65) 100%);
  }

  .page-about .ab-rail__item + .ab-rail__item {
    margin-top: 26px;
  }

  .page-about .ab-rail__link {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    font-family: var(--cf-font-mono);
    font-size: 12px;
    letter-spacing: .08em;
    color: var(--cf-muted);
    transition: color var(--cf-t);
  }

  .page-about .ab-rail__link:hover,
  .page-about .ab-rail__link:focus-visible {
    color: var(--cf-cyan);
  }

  .page-about .ab-rail__dot {
    width: 11px;
    height: 11px;
    flex: 0 0 auto;
    border-radius: 50%;
    background: var(--cf-panel);
    border: 1px solid var(--cf-line);
    box-shadow: 0 0 0 4px var(--cf-void);
    transition: background var(--cf-t), border-color var(--cf-t), box-shadow var(--cf-t);
  }

  .page-about .ab-rail__link:hover .ab-rail__dot,
  .page-about .ab-rail__link:focus-visible .ab-rail__dot {
    background: var(--cf-cyan);
    border-color: var(--cf-cyan);
    box-shadow: 0 0 0 4px var(--cf-void), 0 0 14px rgba(34, 224, 255, .8);
  }

  .page-about .ab-history {
    padding: 30px 28px 30px;
  }

  .page-about .ab-tl__title {
    font-size: 18px;
  }
}

@media (min-width: 1240px) {
  .page-about .ab-audit {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
    gap: 32px;
  }

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

/* 悬停展开说明只在支持悬停的设备上生效 */
@media (hover: hover) and (min-width: 760px) {
  .page-about .ab-stat__d {
    opacity: 0;
    max-height: 0;
    overflow: hidden;
    transform: translateY(-4px);
  }

  .page-about .ab-stat:hover .ab-stat__d,
  .page-about .ab-stat:focus-within .ab-stat__d {
    opacity: 1;
    max-height: 72px;
    transform: translateY(0);
  }
}

/* 减少动态 */
@media (prefers-reduced-motion: reduce) {
  .page-about .ab-step,
  .page-about .ab-badge,
  .page-about .ab-tech__item,
  .page-about .ab-stat__d {
    transition: none;
  }

  .page-about .ab-step:hover,
  .page-about .ab-badge:hover,
  .page-about .ab-tech__item:hover {
    transform: none;
  }
}
<<<END>>>