.page-about {
  --ab-gap: 24px;
  --ab-ink-soft: rgba(16, 22, 31, .58);
  --ab-ink-line: rgba(16, 22, 31, .10);
}

/* ---------- 首屏 ---------- */
.page-about .ab-hero {
  position: relative;
  overflow: hidden;
  padding: 26px 0 52px;
  background:
    radial-gradient(120% 92% at 88% 4%, rgba(169, 107, 255, .22), transparent 58%),
    radial-gradient(92% 72% at 4% 96%, rgba(49, 225, 212, .16), transparent 62%),
    linear-gradient(180deg, var(--ink) 0%, var(--ink-3) 100%);
}

.page-about .ab-hero__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .26;
  z-index: 0;
  -webkit-mask-image: linear-gradient(180deg, #000 0%, rgba(0, 0, 0, .30) 60%, transparent 100%);
  mask-image: linear-gradient(180deg, #000 0%, rgba(0, 0, 0, .30) 60%, transparent 100%);
}

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

.page-about .ab-hero__grid {
  display: grid;
  gap: var(--ab-gap);
  margin-top: 26px;
}

.page-about .ab-hero__lead .tt-h1 {
  margin: 12px 0 0;
  font-size: clamp(34px, 8.4vw, 60px);
  line-height: 1.08;
}

.page-about .ab-hero__lead .tt-lede {
  margin: 18px 0 0;
  max-width: 58ch;
}

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

/* 现场速览卡 */
.page-about .ab-status {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  padding: 26px 22px 20px;
  box-shadow: var(--shadow-lift);
}

.page-about .ab-status::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 5px;
  background: linear-gradient(90deg, var(--cyan), var(--violet) 52%, var(--orange));
}

.page-about .ab-status__cap {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ab-ink-soft);
}

.page-about .ab-status__facts {
  margin: 16px 0 0;
}

.page-about .ab-status__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 11px 0;
  border-bottom: 1px solid var(--ab-ink-line);
}

.page-about .ab-status__row:last-child {
  border-bottom: 0;
  padding-bottom: 4px;
}

.page-about .ab-status__row dt {
  font-size: 13.5px;
  color: var(--ab-ink-soft);
}

.page-about .ab-status__row dd {
  margin: 0;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 16px;
  color: var(--paper-ink);
  text-align: right;
}

/* ---------- 通用小标题组 ---------- */
.page-about .ab-head {
  max-width: 720px;
}

.page-about .ab-head .tt-h2 {
  margin: 10px 0 0;
}

.page-about .ab-head .tt-prose {
  margin-top: 14px;
}

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

.page-about .ab-timeline::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 16px;
  bottom: 16px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--cyan), var(--violet) 50%, var(--orange));
  opacity: .55;
}

.page-about .ab-stage {
  position: relative;
  padding: 4px 0 34px 44px;
}

.page-about .ab-stage:last-child {
  padding-bottom: 4px;
}

.page-about .ab-stage::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 12px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--ink-3);
  border: 2px solid var(--cyan);
  animation: ab-pulse 4.4s ease-in-out infinite;
  transition: transform .26s ease, border-color .26s ease;
}

.page-about .ab-stage:hover::before,
.page-about .ab-stage:focus-within::before {
  transform: scale(1.18);
  border-color: var(--orange);
}

@keyframes ab-pulse {
  0%, 100% { box-shadow: 0 0 0 5px rgba(49, 225, 212, .10), 0 0 16px rgba(49, 225, 212, .32); }
  50%      { box-shadow: 0 0 0 10px rgba(49, 225, 212, .05), 0 0 26px rgba(49, 225, 212, .52); }
}

.page-about .ab-stage__year {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 26px;
  line-height: 1;
  letter-spacing: .06em;
  color: var(--cyan);
}

.page-about .ab-stage__name {
  margin: 8px 0 0;
  font-size: 19px;
  font-weight: 800;
  letter-spacing: -.01em;
  color: #fff;
}

.page-about .ab-stage__text {
  margin: 10px 0 0;
  max-width: 64ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--silver);
}

.page-about .ab-stage__fact {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 14px;
  margin-top: 14px;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  transition: transform .26s ease, box-shadow .26s ease;
}

.page-about .ab-stage:hover .ab-stage__fact,
.page-about .ab-stage:focus-within .ab-stage__fact {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lift);
}

.page-about .ab-stage__fact .tt-num {
  font-size: 19px;
  font-weight: 700;
  color: var(--paper-ink);
}

.page-about .ab-stage__facttext {
  font-size: 14px;
  color: var(--ab-ink-soft);
}

/* ---------- 场地构成 ---------- */
.page-about .ab-venue {
  display: grid;
  gap: 26px;
}

.page-about .ab-venue__figure .tt-media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--line);
}

.page-about .ab-venue__figure img,
.page-about .ab-team__figure img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

.page-about .ab-venue__body .tt-h2 {
  margin: 10px 0 0;
}

.page-about .ab-venue__body .tt-prose {
  margin-top: 14px;
}

.page-about .ab-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 2px;
  margin-top: 24px;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--line);
}

.page-about .ab-metric {
  display: grid;
  gap: 6px;
  padding: 16px 14px;
  background: var(--ink-2);
}

.page-about .ab-metric__num {
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 30px;
  line-height: 1;
  color: var(--cyan);
}

.page-about .ab-metric__label {
  font-size: 13px;
  color: var(--silver);
}

/* ---------- 到店场景 ---------- */
.page-about .ab-scenes {
  margin-top: 28px;
}

.page-about .ab-scenes .tt-tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 20px;
}

.page-about .ab-scenes .tt-tabs__panel {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 22px;
  background: linear-gradient(180deg, rgba(18, 41, 61, .92), rgba(10, 26, 43, .92));
}

.page-about .ab-scene {
  display: grid;
  gap: 20px;
}

.page-about .ab-scene .tt-h3 {
  margin: 0;
}

.page-about .ab-scene .tt-prose {
  margin-top: 12px;
}

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

.page-about .ab-scene__list li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  background: rgba(49, 225, 212, .06);
  border-left: 3px solid var(--cyan);
  font-size: 15.5px;
  line-height: 1.65;
  color: var(--silver);
}

.page-about .ab-scene__list .tt-num {
  flex: none;
  font-size: 14px;
  font-weight: 700;
  color: var(--orange);
  padding-top: 2px;
}

.page-about .ab-audience {
  margin-top: 40px;
}

.page-about .ab-audience .tt-index {
  margin-top: 12px;
}

/* ---------- 团队 ---------- */
.page-about .ab-team {
  display: grid;
  gap: 28px;
}

.page-about .ab-team__body .tt-h2 {
  margin: 10px 0 0;
}

.page-about .ab-team__body .tt-prose {
  margin-top: 14px;
}

.page-about .ab-team__facts {
  margin-top: 24px;
}

.page-about .ab-team__figure .tt-media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--line);
}

/* ---------- 伙伴与认可 ---------- */
.page-about .ab-partners {
  display: grid;
  gap: 16px;
  margin-top: 26px;
}

.page-about .ab-partner {
  padding: 22px;
  border-radius: var(--radius-lg);
}

.page-about .ab-partner .tt-card__title {
  margin: 8px 0 0;
  font-size: 20px;
  line-height: 1.42;
}

.page-about .ab-partner p {
  margin: 12px 0 0;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--silver);
}

/* ---------- 区域与大数字 ---------- */
.page-about .ab-bignums {
  display: grid;
  gap: 26px;
  margin-top: 36px;
}

.page-about .ab-bignum {
  padding-top: 18px;
  border-top: 1px solid var(--line-strong);
}

.page-about .ab-bignum__v {
  display: inline-block;
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: clamp(60px, 16vw, 96px);
  line-height: .9;
  letter-spacing: -.04em;
  color: #fff;
}

.page-about .ab-bignum__u {
  font-family: var(--font-mono);
  font-size: 17px;
  color: var(--orange);
  margin-left: 6px;
}

.page-about .ab-bignum__k {
  display: block;
  margin-top: 10px;
  font-size: 14px;
  letter-spacing: .08em;
  color: var(--cyan);
}

.page-about .ab-bignum__d {
  margin: 8px 0 0;
  max-width: 32ch;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--silver);
}

/* 覆盖点位示意 */
.page-about .ab-map {
  display: grid;
  gap: 14px;
  margin-top: 34px;
  padding: 20px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background:
    repeating-linear-gradient(90deg, rgba(198, 206, 218, .05) 0 1px, transparent 1px 46px),
    radial-gradient(120% 100% at 10% 0%, rgba(49, 225, 212, .10), transparent 62%),
    var(--ink-2);
}

.page-about .ab-zone {
  padding: 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: rgba(10, 26, 43, .74);
  transition: transform .26s ease, border-color .26s ease, box-shadow .26s ease;
}

.page-about .ab-zone:hover,
.page-about .ab-zone:focus-within {
  transform: translateY(-4px);
  border-color: rgba(49, 225, 212, .55);
  box-shadow: var(--shadow-neon);
}

.page-about .ab-zone__dots {
  display: flex;
  gap: 7px;
  margin-bottom: 12px;
}

.page-about .ab-zone__dots i {
  display: block;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 10px rgba(49, 225, 212, .6);
}

.page-about .ab-zone:nth-child(2) .ab-zone__dots i {
  background: var(--violet);
  box-shadow: 0 0 10px rgba(169, 107, 255, .6);
}

.page-about .ab-zone:nth-child(3) .ab-zone__dots i {
  background: var(--orange);
  box-shadow: 0 0 10px rgba(255, 123, 51, .6);
}

.page-about .ab-zone__name {
  display: block;
  font-size: 16px;
  font-weight: 700;
  color: #fff;
}

.page-about .ab-zone__val {
  display: block;
  margin-top: 5px;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--silver);
  transition: color .22s ease;
}

.page-about .ab-zone:hover .ab-zone__val {
  color: var(--cyan);
}

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

/* ---------- 延伸阅读 ---------- */
.page-about .ab-next {
  display: grid;
  gap: 14px;
  margin-top: 26px;
}

.page-about .ab-next__card {
  display: grid;
  gap: 8px;
  padding: 20px;
  border-radius: var(--radius-lg);
  text-decoration: none;
  transition: transform .26s ease, border-color .26s ease, box-shadow .26s ease;
}

.page-about .ab-next__card:hover,
.page-about .ab-next__card:focus-visible {
  transform: translateY(-4px);
  border-color: rgba(255, 123, 51, .6);
  box-shadow: var(--shadow-lift);
}

.page-about .ab-next__title {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  color: #fff;
}

.page-about .ab-next__hint {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--orange);
}

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

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

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

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

@media (min-width: 880px) {
  .page-about .ab-hero {
    padding: 34px 0 76px;
  }

  .page-about .ab-hero__grid {
    grid-template-columns: minmax(0, 1.42fr) minmax(0, .92fr);
    gap: 52px;
    align-items: end;
    margin-top: 34px;
  }

  .page-about .ab-timeline {
    margin-top: 44px;
  }

  .page-about .ab-stage {
    padding-left: 60px;
  }

  .page-about .ab-timeline::before {
    left: 11px;
  }

  .page-about .ab-stage::before {
    left: 4px;
    width: 18px;
    height: 18px;
  }

  .page-about .ab-stage__year {
    font-size: 32px;
  }

  .page-about .ab-stage__name {
    font-size: 22px;
  }

  .page-about .ab-venue {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 44px;
    align-items: center;
  }

  .page-about .ab-team {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 44px;
    align-items: center;
  }

  .page-about .ab-bignums {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 34px;
    margin-top: 46px;
  }

  .page-about .ab-scene {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    gap: 34px;
    align-items: start;
  }
}

@media (min-width: 1080px) {
  .page-about .ab-next {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about *,
  .page-about *::before,
  .page-about *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
}