.page-about {
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(90% 70% at 8% 4%, rgba(140, 124, 255, .30), transparent 62%),
    radial-gradient(64% 52% at 94% 96%, rgba(255, 107, 94, .16), transparent 72%),
    linear-gradient(165deg, var(--bg-0) 0%, var(--bg-1) 58%, var(--bg-2) 100%);
}

.page-about .about-hero-media {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.page-about .about-hero-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .32;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(5, 7, 15, .58) 0%, rgba(11, 16, 38, .74) 58%, var(--bg-0) 100%);
}

.page-about .about-hero-inner {
  padding-block: clamp(22px, 4vw, 44px) clamp(40px, 7vw, 84px);
}

.page-about .about-eyebrow {
  margin: clamp(18px, 3vw, 30px) 0 0;
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--c-gold);
}

.page-about .about-hero h1 {
  margin: 14px 0 0;
  max-width: 22ch;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2rem, 6.4vw, 4.3rem);
  line-height: 1.03;
  letter-spacing: -.02em;
  color: var(--fg);
}

.page-about .about-lead {
  margin: 20px 0 0;
  max-width: 60ch;
  font-size: clamp(1rem, 1.5vw, 1.125rem);
  line-height: 1.8;
  color: var(--fg-dim);
}

.page-about .about-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-chips li {
  padding: 7px 14px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: rgba(17, 26, 58, .55);
  font-size: 12px;
  letter-spacing: .05em;
  color: var(--fg-dim);
}

.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

/* ---------- 数据条 ---------- */
.page-about .about-stats-wrap {
  padding-block: clamp(22px, 4vw, 40px);
  background: var(--bg-0);
}

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--line-soft);
}

.page-about .about-stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: clamp(16px, 3vw, 26px) clamp(14px, 2.4vw, 24px);
  background: var(--bg-1);
  transition: background .2s var(--ease);
}

.page-about .about-stat:hover {
  background: linear-gradient(160deg, rgba(57, 230, 208, .10), var(--bg-1) 70%);
}

.page-about .about-stat-num {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.55rem, 3.6vw, 2.3rem);
  line-height: 1.05;
  letter-spacing: -.02em;
  color: var(--c-cyan);
}

.page-about .about-stat:nth-child(2n) .about-stat-num {
  color: var(--c-gold);
}

.page-about .about-stat-label {
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--fg-mute);
}

/* ---------- 主体栏 ---------- */
.page-about .about-shell {
  display: grid;
  gap: clamp(16px, 3vw, 32px);
  padding-block: clamp(30px, 5vw, 64px);
}

.page-about .about-rail-title {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--fg-mute);
}

.page-about .about-rail-list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-about .about-rail-list a {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(17, 26, 58, .6);
  color: var(--fg-mute);
  font-size: 13px;
  text-decoration: none;
  white-space: nowrap;
  transition: color .18s var(--ease), border-color .18s var(--ease), background .18s var(--ease);
}

.page-about .about-rail-list a:hover {
  color: var(--fg);
  border-color: var(--line-strong);
}

.page-about .rail-num {
  font-size: 11px;
  color: var(--c-gold);
}

.page-about .about-rail-list a[aria-current="true"] {
  color: var(--c-cyan);
  border-color: rgba(57, 230, 208, .55);
  background: rgba(57, 230, 208, .10);
}

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

.page-about .about-chapter {
  padding-block: clamp(30px, 4.6vw, 58px);
  border-top: 1px solid var(--line-soft);
  scroll-margin-top: 88px;
}

.page-about .about-flow > .about-chapter:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-about .chapter-tag {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--c-gold);
}

.page-about .chapter-num {
  color: var(--c-cyan);
  letter-spacing: .1em;
}

.page-about .about-chapter h2,
.page-about .about-next h2 {
  margin: 0 0 18px;
  max-width: 24ch;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.5rem, 3.6vw, 2.4rem);
  line-height: 1.16;
  letter-spacing: -.015em;
  color: var(--fg);
}

.page-about .about-chapter h3 {
  margin: 0 0 6px;
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--fg);
}

.page-about .prose {
  max-width: 66ch;
}

.page-about .prose p {
  margin: 0;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--fg-dim);
}

.page-about .prose p + p {
  margin-top: 1em;
}

/* ---------- 空间 ---------- */
.page-about .space-grid,
.page-about .team-split {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
  margin-top: 8px;
}

.page-about .space-figure,
.page-about .team-figure {
  margin: 0;
}

.page-about .space-figure figcaption,
.page-about .team-figure figcaption {
  margin-top: 10px;
  font-size: 11px;
  line-height: 1.7;
  letter-spacing: .06em;
  color: var(--fg-mute);
}

/* ---------- 分类 ---------- */
.page-about .tax-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .tax-card {
  --k: var(--c-cyan);
  padding: 18px 18px 20px;
  border: 1px solid var(--line);
  border-top: 3px solid var(--k);
  border-radius: var(--r-md);
  background: linear-gradient(160deg, rgba(17, 26, 58, .95), rgba(11, 16, 38, .92));
  transition: box-shadow .2s var(--ease), transform .2s var(--ease);
}

.page-about .tax-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 0 1px var(--k), 0 12px 28px rgba(5, 7, 15, .55);
}

.page-about .tax-card h3 {
  color: var(--k);
}

.page-about .tax-card p {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.75;
  color: var(--fg-dim);
}

.page-about .tax-card:nth-child(2) { --k: var(--c-gold); }
.page-about .tax-card:nth-child(3) { --k: var(--c-violet); }
.page-about .tax-card:nth-child(4) { --k: var(--c-coral); }
.page-about .tax-card:nth-child(5) { --k: var(--c-mint); }
.page-about .tax-card:nth-child(6) { --k: var(--c-ivory); }

.page-about .tax-note {
  margin-top: 20px;
  padding: 18px clamp(16px, 3vw, 24px);
  border-left: 3px solid var(--c-cyan);
  border-radius: 0 var(--r-md) var(--r-md) 0;
  background: linear-gradient(90deg, rgba(57, 230, 208, .10), rgba(140, 124, 255, .05));
}

.page-about .tax-note p {
  margin: 0 0 14px;
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--fg-dim);
}

/* ---------- 团队 ---------- */
.page-about .team-stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-md);
  overflow: hidden;
  background: var(--line-soft);
}

.page-about .team-stats li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 18px;
  background: var(--bg-1);
}

.page-about .team-role {
  font-size: .9375rem;
  color: var(--fg-dim);
}

.page-about .team-num {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.75rem;
  line-height: 1;
  color: var(--c-gold);
}

/* ---------- 版本时间轴 ---------- */
.page-about .version-list {
  position: relative;
  display: grid;
  gap: clamp(14px, 2.4vw, 20px);
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .version-list::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 12px;
  bottom: 12px;
  width: 2px;
  border-radius: 2px;
  opacity: .55;
  background: linear-gradient(180deg, var(--c-cyan), var(--c-violet) 50%, var(--c-gold));
}

.page-about .version-item {
  position: relative;
  padding-left: clamp(28px, 4vw, 42px);
}

.page-about .version-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--bg-0);
  border: 2px solid var(--c-cyan);
  box-shadow: 0 0 12px rgba(57, 230, 208, .45);
}

.page-about .version-item:nth-child(4)::before {
  border-color: var(--c-gold);
  box-shadow: 0 0 12px rgba(242, 184, 75, .5);
}

.page-about .version-card {
  padding: 16px clamp(14px, 2.6vw, 22px) 18px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: rgba(17, 26, 58, .78);
  transition: border-color .2s var(--ease);
}

.page-about .version-card:hover {
  border-color: var(--line-strong);
}

.page-about .version-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}

.page-about .version-year {
  font-size: 13px;
  letter-spacing: .12em;
  color: var(--c-gold);
}

.page-about .version-card p {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.78;
  color: var(--fg-dim);
}

/* ---------- 合作与荣誉 ---------- */
.page-about .coop-groups {
  display: grid;
  gap: 12px;
  margin-top: 22px;
}

.page-about .coop-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: rgba(17, 26, 58, .62);
}

.page-about .coop-label {
  min-width: 72px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--fg-mute);
}

.page-about .coop-chip {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 6px 14px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: var(--bg-0);
  font-size: .875rem;
  color: var(--fg);
  transition: border-color .18s var(--ease), box-shadow .18s var(--ease);
}

.page-about .coop-chip:hover {
  border-color: var(--c-cyan);
  box-shadow: 0 0 16px rgba(57, 230, 208, .22);
}

.page-about .coop-kind {
  font-size: 11px;
  color: var(--fg-mute);
  transition: color .18s var(--ease);
}

.page-about .coop-chip:hover .coop-kind {
  color: var(--c-cyan);
}

.page-about .honor {
  margin-top: 18px;
  padding: clamp(18px, 3vw, 26px);
  border: 1px solid rgba(242, 184, 75, .38);
  border-radius: var(--r-md);
  background:
    radial-gradient(120% 120% at 0% 0%, rgba(242, 184, 75, .16), transparent 62%),
    rgba(11, 16, 38, .85);
}

.page-about .honor-kicker {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--c-gold);
}

.page-about .honor-text {
  margin: 0;
  max-width: 62ch;
  font-size: .9375rem;
  line-height: 1.82;
  color: var(--fg-dim);
}

/* ---------- 尾部导流 ---------- */
.page-about .about-next {
  padding-block: clamp(36px, 6vw, 76px);
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, var(--bg-1), var(--bg-0));
}

.page-about .next-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-top: 22px;
}

.page-about .next-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: rgba(11, 16, 38, .72);
  text-decoration: none;
  color: var(--fg);
  transition: transform .2s var(--ease), border-color .2s var(--ease), box-shadow .2s var(--ease);
}

.page-about .next-card:hover {
  transform: translateY(-3px);
  border-color: var(--c-cyan);
  box-shadow: 0 12px 26px rgba(5, 7, 15, .5);
}

.page-about .next-kicker {
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--c-cyan);
}

.page-about .next-title {
  font-size: 1.0625rem;
  font-weight: 700;
}

.page-about .next-desc {
  font-size: .875rem;
  line-height: 1.7;
  color: var(--fg-mute);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .tax-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

@media (min-width: 780px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .space-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    align-items: start;
  }
}

@media (min-width: 960px) {
  .page-about .team-split {
    grid-template-columns: minmax(0, 1fr) minmax(0, .8fr);
    align-items: start;
  }
}

@media (min-width: 1000px) {
  .page-about .about-shell {
    grid-template-columns: 216px minmax(0, 1fr);
    gap: clamp(32px, 4vw, 64px);
    align-items: start;
  }

  .page-about .about-rail {
    position: sticky;
    top: clamp(28px, 6vh, 72px);
  }

  .page-about .about-rail-list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-about .about-rail-list a {
    display: flex;
    gap: 10px;
    padding: 11px 0 11px 18px;
    border: 0;
    border-radius: 0;
    background: transparent;
    color: var(--fg-mute);
    white-space: normal;
    position: relative;
  }

  .page-about .about-rail-list a::before {
    content: "";
    position: absolute;
    left: 0;
    top: 9px;
    bottom: 9px;
    width: 2px;
    border-radius: 2px;
    background: transparent;
    transition: background .2s var(--ease), box-shadow .2s var(--ease);
  }

  .page-about .about-rail-list a:hover {
    color: var(--fg);
    background: transparent;
  }

  .page-about .about-rail-list a[aria-current="true"] {
    color: var(--c-cyan);
    background: transparent;
  }

  .page-about .about-rail-list a[aria-current="true"]::before {
    background: linear-gradient(180deg, var(--c-cyan), var(--c-violet));
    box-shadow: 0 0 12px rgba(57, 230, 208, .55);
  }

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

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

@media (prefers-reduced-motion: reduce) {
  .page-about .tax-card,
  .page-about .next-card,
  .page-about .coop-chip,
  .page-about .about-stat {
    transition: none;
  }

  .page-about .tax-card:hover,
  .page-about .next-card:hover {
    transform: none;
  }
}
<<<END>>>