.page-about {
  --about-line-soft: rgba(28, 46, 82, 0.85);
  --about-gold-soft: rgba(201, 162, 39, 0.10);
}

.page-about h2 {
  font-family: var(--font-head);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.page-about h3 {
  font-family: var(--font-head);
  font-weight: 700;
  letter-spacing: -0.01em;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding-top: 18px;
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
  align-items: center;
}

.page-about .about-hero h1 {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(2rem, 7vw, 3.2rem);
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin: 14px 0 16px;
}

.page-about .about-hero .lead {
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.8;
  margin: 0;
  max-width: 36em;
}

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

.page-about .about-ring-panel {
  position: relative;
  padding: 22px 22px 16px;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background:
    linear-gradient(180deg, rgba(13, 24, 48, 0.92), rgba(6, 11, 24, 0.72)),
    repeating-linear-gradient(90deg, var(--about-line-soft) 0 1px, transparent 1px 44px),
    repeating-linear-gradient(0deg, var(--about-line-soft) 0 1px, transparent 1px 44px);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 34px), calc(100% - 34px) 100%, 0 100%);
}

.page-about .about-ring {
  display: block;
  width: 100%;
  max-width: 340px;
  height: auto;
  margin: 0 auto;
}

.page-about .about-ring__caption {
  margin: 12px 0 0;
  font-size: 0.76rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  text-align: center;
}

/* ---------- 数字条 ---------- */
.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

/* ---------- 时间轴 ---------- */
.page-about .about-banner {
  margin: 28px 0 0;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 40px), calc(100% - 40px) 100%, 0 100%);
}

.page-about .about-banner img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  filter: saturate(0.85) contrast(1.05);
}

.page-about .about-timeline {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
  margin-top: 34px;
}

.page-about .about-timeline__nav {
  order: -1;
  position: sticky;
  top: 74px;
  z-index: 6;
  display: flex;
  gap: 8px;
  align-self: start;
  overflow-x: auto;
  padding: 10px 0 12px;
  background: linear-gradient(180deg, rgba(6, 11, 24, 0.96), rgba(6, 11, 24, 0.86) 72%, rgba(6, 11, 24, 0));
  scrollbar-width: none;
}

.page-about .about-timeline__nav::-webkit-scrollbar {
  display: none;
}

.page-about .about-year {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 78px;
  padding: 8px 14px;
  border: 1px solid var(--gold);
  border-radius: 999px;
  background: var(--about-gold-soft);
  color: var(--gold);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  text-decoration: none;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.page-about .about-year:hover,
.page-about .about-year:focus-visible {
  background: var(--gold);
  color: var(--ink);
}

.page-about .about-timeline__list {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}

.page-about .about-timeline__list::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 6px;
  bottom: 26px;
  width: 1px;
  background: linear-gradient(180deg, var(--gold), rgba(0, 229, 200, 0.35) 55%, rgba(28, 46, 82, 0) 100%);
}

.page-about .about-timeline__item {
  position: relative;
  padding: 0 0 34px 32px;
  scroll-margin-top: 120px;
}

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

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  border: 2px solid var(--gold);
  background: var(--bg);
  box-shadow: 0 0 0 4px var(--about-gold-soft);
}

.page-about .about-timeline__item h3 {
  margin: 12px 0 10px;
  font-size: 1.18rem;
  line-height: 1.4;
}

.page-about .about-timeline__item p {
  margin: 0;
  color: var(--muted);
  font-size: 0.94rem;
  line-height: 1.8;
  max-width: 44em;
}

.page-about .about-timeline__note {
  margin-top: 14px;
  padding: 11px 14px;
  border-left: 2px solid var(--cyan);
  border-radius: 0 var(--r) var(--r) 0;
  background: rgba(13, 24, 48, 0.85);
  font-size: 0.86rem;
  line-height: 1.7;
  color: var(--muted);
}

.page-about .about-timeline__note strong {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--cyan);
}

/* ---------- 赛事覆盖 ---------- */
.page-about .about-leagues {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 24px 0 0;
  padding: 0;
}

.page-about .about-cadence {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  margin-top: 26px;
  padding: 20px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--cyan);
  border-radius: var(--r);
  background: linear-gradient(120deg, rgba(13, 24, 48, 0.95), rgba(6, 11, 24, 0.7));
}

.page-about .about-cadence__k {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-about .about-cadence__cell p {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.75;
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  align-items: start;
}

.page-about .about-team__text > p {
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.85;
  margin: 14px 0 0;
  max-width: 46em;
}

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

.page-about .about-team__media figcaption {
  margin-top: 10px;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.page-about .about-flow {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.page-about .about-flow__step {
  position: relative;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--r);
  background: linear-gradient(180deg, rgba(13, 24, 48, 0.92), rgba(6, 11, 24, 0.72));
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.page-about .about-flow__step:hover,
.page-about .about-flow__step:focus-within {
  border-color: var(--cyan);
  transform: translateY(-2px);
}

.page-about .about-flow__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--gold);
}

.page-about .about-flow__step h3 {
  margin: 10px 0 8px;
  font-size: 1.04rem;
}

.page-about .about-flow__step p {
  margin: 0;
  color: var(--muted);
  font-size: 0.87rem;
  line-height: 1.7;
}

/* ---------- 内容栏目 ---------- */
.page-about .about-columns {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
  margin-top: 28px;
}

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

.page-about .about-column-card {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--r);
  background: var(--bg-2);
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.page-about .about-column-card:hover {
  border-color: var(--cyan);
  transform: translateY(-2px);
}

.page-about .about-column-card h3 {
  margin: 12px 0 8px;
  font-size: 1.06rem;
}

.page-about .about-column-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.75;
}

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

.page-about .about-columns__figure figcaption {
  margin-top: 10px;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.page-about .about-columns__more {
  margin: 22px 0 0;
  font-size: 0.9rem;
  color: var(--muted);
}

.page-about .about-columns__more a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 200, 0.4);
}

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

/* ---------- 服务与安全 ---------- */
.page-about .about-assure {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-top: 26px;
}

.page-about .about-assure__block {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: linear-gradient(160deg, rgba(13, 24, 48, 0.95), rgba(6, 11, 24, 0.72));
}

.page-about .about-assure__block h3 {
  margin: 0 0 10px;
  font-size: 1.08rem;
}

.page-about .about-assure__row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 12px;
  padding: 12px 0;
  border-bottom: 1px dashed var(--about-line-soft);
}

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

.page-about .about-assure__v {
  flex: 0 0 auto;
  min-width: 86px;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--cyan);
}

.page-about .about-assure__row span:last-child {
  flex: 1 1 200px;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.7;
}

/* ---------- 收尾 ---------- */
.page-about .about-cta {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
  padding: 26px 22px;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background:
    radial-gradient(120% 140% at 100% 0%, rgba(0, 229, 200, 0.13), rgba(0, 229, 200, 0) 62%),
    linear-gradient(140deg, rgba(13, 24, 48, 0.96), rgba(6, 11, 24, 0.82));
}

.page-about .about-cta h2 {
  margin: 0 0 10px;
  font-size: clamp(1.3rem, 4vw, 1.7rem);
}

.page-about .about-cta p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.8;
  max-width: 48em;
}

.page-about .about-cta__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
  }

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

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

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

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

@media (min-width: 960px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    gap: 52px;
  }

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

  .page-about .about-timeline {
    grid-template-columns: minmax(0, 1fr) 168px;
    gap: 52px;
    margin-top: 44px;
  }

  .page-about .about-timeline__nav {
    order: 0;
    position: sticky;
    top: 96px;
    flex-direction: column;
    overflow: visible;
    padding: 0;
    background: none;
  }

  .page-about .about-year {
    width: 100%;
  }

  .page-about .about-team {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: 44px;
  }

  .page-about .about-columns {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
    gap: 28px;
    align-items: start;
  }

  .page-about .about-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    padding: 36px 40px;
  }

  .page-about .about-cta__links {
    justify-content: flex-end;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-flow__step,
  .page-about .about-column-card,
  .page-about .about-year {
    transition: none;
  }

  .page-about .about-flow__step:hover,
  .page-about .about-column-card:hover {
    transform: none;
  }
}