.page-about {
  --ab-radius: 28px;
  --ab-hairline: rgba(36, 48, 79, 0.9);
  --ab-cyan-soft: rgba(41, 224, 214, 0.08);
  --ab-gold-soft: rgba(245, 196, 107, 0.1);
  --ab-violet-soft: rgba(162, 107, 255, 0.1);
  display: block;
  padding-bottom: clamp(48px, 8vw, 104px);
  overflow-x: clip;
}

/* ---------- 面包屑 ---------- */
.page-about .about-crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding: 26px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--mist-400);
}

.page-about .about-crumb a {
  color: var(--mist-400);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-about .about-crumb a:hover,
.page-about .about-crumb a:focus-visible {
  color: var(--cyan-400);
  border-bottom-color: var(--cyan-400);
}

.page-about .about-crumb__sep {
  color: var(--slate-600);
}

.page-about .about-crumb__here {
  color: var(--mist-100);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  display: grid;
  gap: 36px;
  padding: 34px 0 56px;
}

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

.page-about .about-hero__title {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(34px, 7.6vw, 74px);
  line-height: 1.04;
  letter-spacing: -0.02em;
  color: var(--white);
  margin: 14px 0 0;
  text-wrap: balance;
}

.page-about .about-hero__lead {
  margin: 22px 0 0;
  max-width: 36em;
  color: var(--mist-400);
  font-size: 16px;
  line-height: 1.9;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.page-about .about-hero__aside {
  position: relative;
  min-width: 0;
  padding-top: 8px;
}

.page-about .about-hero__tag {
  display: inline-block;
  font-size: 11px;
  letter-spacing: 0.36em;
  color: var(--violet-400);
  writing-mode: horizontal-tb;
}

.page-about .about-hero__visual {
  margin-top: 10px;
}

.page-about .about-hero__seatmap {
  display: block;
  width: 100%;
  max-width: 420px;
  height: auto;
  margin: 0 auto;
}

.page-about .about-hero__caption {
  margin: 16px auto 0;
  max-width: 420px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist-400);
  border-left: 2px solid var(--slate-600);
  padding-left: 14px;
}

/* ---------- 通用区块 ---------- */
.page-about .about-block {
  padding: clamp(40px, 6vw, 76px) 0;
}

.page-about .about-head {
  max-width: 720px;
}

.page-about .about-h2 {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(26px, 4.4vw, 42px);
  line-height: 1.18;
  letter-spacing: -0.015em;
  color: var(--white);
  margin: 12px 0 0;
  text-wrap: balance;
}

.page-about .about-head__lead {
  margin: 18px 0 0;
  max-width: 34em;
  color: var(--mist-400);
  font-size: 16px;
  line-height: 1.9;
}

/* ---------- 时间线 ---------- */
.page-about .about-timeline {
  list-style: none;
  margin: clamp(32px, 5vw, 56px) 0 0;
  padding: 0;
  position: relative;
}

.page-about .about-timeline__item {
  position: relative;
  padding: 0 0 clamp(30px, 4vw, 46px) 42px;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 8px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--ink-900);
  border: 2px solid var(--cyan-400);
  box-shadow: 0 0 0 5px var(--ab-cyan-soft);
}

.page-about .about-timeline__item--gold::before {
  border-color: var(--gold-300);
  box-shadow: 0 0 0 5px var(--ab-gold-soft);
}

.page-about .about-timeline__item::after {
  content: "";
  position: absolute;
  left: 10px;
  top: 24px;
  bottom: 0;
  width: 1px;
  background: linear-gradient(to bottom, var(--slate-600), rgba(36, 48, 79, 0.15));
}

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

.page-about .about-timeline__item:last-child::after {
  display: none;
}

.page-about .about-timeline__year {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--cyan-400);
  border: 1px solid rgba(41, 224, 214, 0.34);
  border-radius: var(--r-pill);
  padding: 5px 15px;
  background: var(--ab-cyan-soft);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.page-about .about-timeline__item--gold .about-timeline__year {
  color: var(--gold-300);
  border-color: rgba(245, 196, 107, 0.36);
  background: var(--ab-gold-soft);
}

.page-about .about-timeline__body {
  margin-top: 14px;
}

.page-about .about-timeline__body h3 {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(19px, 2.6vw, 26px);
  line-height: 1.34;
  color: var(--mist-100);
  margin: 0 0 10px;
}

.page-about .about-timeline__body p {
  margin: 0 0 12px;
  max-width: 38em;
  font-size: 15.5px;
  line-height: 1.88;
  color: var(--mist-400);
}

.page-about .about-timeline__note {
  display: inline-block;
  margin: 0;
  font-size: 12.5px;
  letter-spacing: 0.05em;
  color: var(--gold-300);
}

.page-about .about-timeline__figure {
  margin: 20px 0 0;
  aspect-ratio: 10 / 7;
  max-width: 560px;
}

.page-about .about-timeline__figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  padding: clamp(28px, 5vw, 56px) 0;
}

.page-about .about-team__band {
  border-radius: var(--r-xl);
  padding: clamp(26px, 4vw, 48px);
}

.page-about .about-team__lead {
  margin: 16px 0 0;
  max-width: 36em;
  font-size: 16px;
  line-height: 1.9;
  color: var(--mist-400);
}

.page-about .about-team__grid {
  display: grid;
  gap: clamp(24px, 4vw, 40px);
  margin-top: clamp(24px, 4vw, 40px);
}

.page-about .about-team__figure {
  aspect-ratio: 2 / 1;
}

.page-about .about-team__figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

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

.page-about .about-roles {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 24px;
}

.page-about .about-roles__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
}

.page-about .about-roles__label {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 18px;
  color: var(--mist-100);
}

.page-about .about-roles__val {
  font-size: 12.5px;
  color: var(--mist-400);
}

.page-about .about-roles__meter {
  display: block;
  margin-top: 10px;
  height: 8px;
  border-radius: var(--r-pill);
  background: rgba(36, 48, 79, 0.55);
  overflow: hidden;
}

.page-about .about-roles__fill {
  display: block;
  height: 100%;
  border-radius: inherit;
}

.page-about .about-roles__fill--cyan {
  width: 67%;
  background: linear-gradient(90deg, var(--cyan-400), rgba(41, 224, 214, 0.28));
}

.page-about .about-roles__fill--gold {
  width: 33%;
  background: linear-gradient(90deg, var(--gold-300), rgba(245, 196, 107, 0.26));
}

.page-about .about-roles__desc {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mist-400);
}

.page-about .about-cities {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .about-cities__item {
  display: grid;
  gap: 5px;
  padding: 16px 18px;
  border-radius: var(--r-md);
  border: 1px solid var(--slate-600);
  background: linear-gradient(160deg, rgba(14, 22, 48, 0.92), rgba(7, 12, 27, 0.55));
  transition: border-color 180ms var(--ease), transform 180ms var(--ease);
}

.page-about .about-cities__item:hover {
  border-color: rgba(41, 224, 214, 0.5);
  transform: translateY(-4px);
}

.page-about .about-cities__item .mono {
  font-size: 10.5px;
  letter-spacing: 0.24em;
  color: var(--violet-400);
}

.page-about .about-cities__item strong {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 17px;
  color: var(--mist-100);
}

.page-about .about-cities__item span:last-child {
  font-size: 13.5px;
  color: var(--mist-400);
}

/* ---------- 内容矩阵 ---------- */
.page-about .about-matrix__grid {
  display: grid;
  gap: clamp(28px, 5vw, 52px);
  margin-top: clamp(30px, 5vw, 52px);
}

.page-about .about-matrix__figure {
  aspect-ratio: 1 / 1;
  max-width: 420px;
  margin: 0 auto;
}

.page-about .about-matrix__figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

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

.page-about .about-tracks {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .about-tracks__item {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 14px;
  align-items: start;
  padding: 20px 22px;
  border-radius: var(--r-lg);
  border: 1px solid var(--slate-600);
  background: linear-gradient(150deg, rgba(14, 22, 48, 0.82), rgba(7, 12, 27, 0.5));
}

.page-about .about-tracks__item:nth-child(2) {
  margin-left: 0;
}

.page-about .about-tracks__num {
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--cyan-400);
  padding-top: 4px;
}

.page-about .about-tracks__item h3 {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 19px;
  color: var(--mist-100);
  margin: 0 0 6px;
}

.page-about .about-tracks__item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.82;
  color: var(--mist-400);
}

.page-about .about-partners {
  display: grid;
  gap: 14px;
  margin-top: 24px;
}

.page-about .about-partners__stat {
  padding: 20px 22px;
  border-radius: var(--r-lg);
  border: 1px dashed rgba(36, 48, 79, 0.95);
  background: rgba(6, 58, 61, 0.26);
}

.page-about .about-partners__num {
  display: block;
  font-size: clamp(22px, 3.4vw, 30px);
  font-weight: 600;
  color: var(--gold-300);
  letter-spacing: 0.01em;
}

.page-about .about-partners__stat p {
  margin: 8px 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mist-400);
}

.page-about .about-matrix__note {
  margin: 22px 0 0;
  font-size: 15px;
  line-height: 1.9;
  color: var(--mist-400);
  max-width: 36em;
}

.page-about .about-matrix__note a {
  color: var(--cyan-400);
  text-decoration: none;
  border-bottom: 1px solid rgba(41, 224, 214, 0.4);
}

.page-about .about-matrix__note a:hover,
.page-about .about-matrix__note a:focus-visible {
  border-bottom-color: var(--cyan-400);
}

/* ---------- 外部认可 ---------- */
.page-about .about-honor {
  margin: clamp(32px, 5vw, 64px) 0 0;
  border-radius: var(--r-xl);
  border: 1px solid var(--ab-hairline);
  background:
    radial-gradient(120% 140% at 8% 0%, rgba(162, 107, 255, 0.16), transparent 58%),
    linear-gradient(160deg, rgba(14, 22, 48, 0.96), rgba(7, 12, 27, 0.9));
  padding: clamp(28px, 4.5vw, 52px);
}

.page-about .about-honor__inner {
  display: grid;
  gap: clamp(26px, 4vw, 44px);
}

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 0;
}

.page-about .about-stats__item {
  padding: 18px 20px;
  border-radius: var(--r-md);
  border: 1px solid rgba(36, 48, 79, 0.85);
  background: rgba(7, 12, 27, 0.55);
}

.page-about .about-stats dt {
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--mist-400);
}

.page-about .about-stats__num {
  display: block;
  margin: 8px 0 0;
  font-size: clamp(20px, 3vw, 26px);
  font-weight: 600;
  color: var(--cyan-400);
  letter-spacing: 0.01em;
}

/* ---------- 收束 ---------- */
.page-about .about-next {
  padding: clamp(44px, 6vw, 80px) 0 0;
}

.page-about .about-next__title {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(22px, 3.4vw, 32px);
  line-height: 1.25;
  color: var(--mist-100);
  margin: 0 0 clamp(22px, 3vw, 32px);
}

.page-about .about-next__grid {
  display: grid;
  gap: 18px;
}

.page-about .about-next__card {
  display: block;
  padding: 26px 24px 24px;
  border-radius: var(--r-xl);
  border: 1px solid var(--slate-600);
  background: linear-gradient(155deg, rgba(14, 22, 48, 0.9), rgba(7, 12, 27, 0.55));
  text-decoration: none;
  transition: transform 200ms var(--ease), border-color 200ms var(--ease);
}

.page-about .about-next__card:hover,
.page-about .about-next__card:focus-visible {
  transform: translateY(-5px);
  border-color: rgba(41, 224, 214, 0.55);
}

.page-about .about-next__card--talk:hover,
.page-about .about-next__card--talk:focus-visible {
  border-color: rgba(245, 196, 107, 0.6);
}

.page-about .about-next__num {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--violet-400);
}

.page-about .about-next__card h3 {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(19px, 2.6vw, 24px);
  line-height: 1.3;
  color: var(--mist-100);
  margin: 12px 0 10px;
}

.page-about .about-next__card p {
  margin: 0 0 18px;
  font-size: 15px;
  line-height: 1.82;
  color: var(--mist-400);
  max-width: 30em;
}

.page-about .about-next__go {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--cyan-400);
  border-bottom: 1px solid rgba(41, 224, 214, 0.4);
  padding-bottom: 2px;
}

.page-about .about-next__card--talk .about-next__go {
  color: var(--gold-300);
  border-bottom-color: rgba(245, 196, 107, 0.4);
}

.page-about .about-next__aside {
  margin: 26px 0 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--mist-400);
}

.page-about .about-next__aside a {
  color: var(--cyan-400);
  text-decoration: none;
  border-bottom: 1px solid rgba(41, 224, 214, 0.4);
}

.page-about .about-next__aside a:hover,
.page-about .about-next__aside a:focus-visible {
  border-bottom-color: var(--cyan-400);
}

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

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

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

@media (min-width: 900px) {
  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    align-items: start;
  }

  .page-about .about-matrix__figure {
    margin: 0;
  }

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

@media (min-width: 980px) {
  .page-about .about-hero {
    grid-template-columns: minmax(0, 1.22fr) minmax(0, 0.78fr);
    align-items: end;
    gap: clamp(36px, 5vw, 64px);
    padding: 56px 0 88px;
  }

  .page-about .about-hero__tag {
    writing-mode: vertical-rl;
    letter-spacing: 0.42em;
    position: absolute;
    top: 0;
    right: -6px;
  }

  .page-about .about-hero__seatmap {
    margin: 0 0 0 auto;
  }

  .page-about .about-hero__caption {
    margin-left: auto;
    margin-right: 0;
  }

  .page-about .about-matrix__grid {
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
    align-items: start;
  }

  .page-about .about-honor__inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
    align-items: center;
  }

  .page-about .about-tracks__item:nth-child(2) {
    margin-left: 26px;
  }

  .page-about .about-tracks__item:nth-child(3) {
    margin-left: 12px;
  }
}

@media (min-width: 1180px) {
  .page-about .about-timeline {
    padding-left: 24px;
  }

  .page-about .about-timeline__item {
    padding-left: 58px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-cities__item,
  .page-about .about-next__card,
  .page-about .about-crumb a {
    transition: none;
  }

  .page-about .about-cities__item:hover,
  .page-about .about-next__card:hover {
    transform: none;
  }
}