.page-about {
  --about-max: 1240px;
  --about-gap: clamp(1.5rem, 4vw, 3rem);
  --about-pad: 1.25rem;
  display: block;
  background: var(--deep);
  color: var(--star);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line-soft);
  background:
    radial-gradient(120% 100% at 86% 0%, rgba(122, 92, 255, 0.20), transparent 60%),
    radial-gradient(80% 70% at 4% 100%, rgba(53, 225, 240, 0.10), transparent 62%),
    var(--deep);
}

.page-about .about-hero-inner {
  max-width: var(--about-max);
  margin: 0 auto;
  padding: 1.5rem var(--about-pad) 3rem;
  display: grid;
  gap: var(--about-gap);
}

.page-about .about-hero-copy .breadcrumb {
  margin-bottom: 1.25rem;
}

.page-about .about-hero-copy h1 {
  margin: 0.5rem 0 1rem;
  font-size: clamp(1.9rem, 7vw, 3rem);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--star);
}

.page-about .about-hero-copy .lede {
  margin: 0;
  max-width: 36em;
  color: var(--mist);
  font-size: 1rem;
  line-height: 1.85;
}

.page-about .about-figures {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem 1.25rem;
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
}

.page-about .about-figure {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.page-about .about-figure-num {
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 5vw, 2rem);
  font-weight: 700;
  line-height: 1.1;
  color: var(--gold);
}

.page-about .about-figure-label {
  font-size: 0.8125rem;
  color: var(--mist);
  letter-spacing: 0.02em;
}

.page-about .about-hero-visual {
  margin: 0;
  position: relative;
  border: 1px solid var(--line);
  background: var(--hull);
}

.page-about .about-hero-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(200deg, rgba(122, 92, 255, 0.18), rgba(7, 11, 24, 0.55) 70%);
  pointer-events: none;
}

.page-about .about-hero-visual img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

/* ---------- 外壳与网格 ---------- */
.page-about .about-shell {
  max-width: var(--about-max);
  margin: 0 auto;
  padding: 0 var(--about-pad);
}

.page-about .about-grid {
  display: grid;
  gap: var(--about-gap);
}

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

/* ---------- 锚点索引 ---------- */
.page-about .about-anchor {
  display: none;
}

.page-about .about-anchor-title {
  display: block;
  font-size: 0.75rem;
  letter-spacing: 0.24em;
  color: var(--mist);
  margin-bottom: 0.875rem;
}

.page-about .about-anchor-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.125rem;
}

.page-about .about-anchor-link {
  display: block;
  padding: 0.4rem 0 0.4rem 0.75rem;
  border-left: 1px solid var(--line);
  color: var(--mist);
  font-size: 0.875rem;
  text-decoration: none;
  transition: color 200ms var(--ease), border-color 200ms var(--ease), background 200ms var(--ease);
}

.page-about .about-anchor-link:hover,
.page-about .about-anchor-link:focus-visible {
  color: var(--cyan);
  border-left-color: var(--cyan);
  background: rgba(53, 225, 240, 0.06);
  outline: none;
}

/* ---------- 区块 ---------- */
.page-about .about-band {
  position: relative;
  margin-inline: calc(var(--about-pad) * -1);
  padding: 2.25rem var(--about-pad);
  border-bottom: 1px solid var(--line-soft);
}

.page-about .about-band--hull {
  background: linear-gradient(180deg, rgba(14, 23, 48, 0.88) 0%, rgba(7, 11, 24, 0.35) 100%);
}

.page-about .about-band--panel {
  background: linear-gradient(180deg, rgba(22, 34, 74, 0.62) 0%, rgba(14, 23, 48, 0.30) 100%);
  border-bottom-color: var(--line);
}

.page-about .about-band--last {
  border-bottom: 0;
}

.page-about .about-band-head {
  max-width: 40rem;
}

.page-about .about-band-head .eyebrow {
  margin-bottom: 0.625rem;
}

.page-about .about-band-head h2 {
  margin: 0 0 0.875rem;
  font-size: clamp(1.375rem, 4.6vw, 2rem);
  line-height: 1.3;
  color: var(--star);
}

.page-about .about-band-head .prose {
  margin: 0;
  color: var(--mist);
  line-height: 1.85;
}

/* ---------- 时间轴 ---------- */
.page-about .about-tl-wrap {
  display: grid;
  gap: var(--about-gap);
  margin-top: 2rem;
}

.page-about .about-timeline {
  list-style: none;
  margin: 0;
  padding: 0 0 0 1.75rem;
  border-left: 1px solid var(--line);
}

.page-about .about-tl-item {
  position: relative;
  padding-bottom: 1.75rem;
}

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

.page-about .about-tl-item::before {
  content: "";
  position: absolute;
  top: 0.5rem;
  left: calc(-1.75rem - 5px);
  width: 9px;
  height: 9px;
  background: var(--violet);
  transform: rotate(45deg);
  box-shadow: 0 0 14px rgba(122, 92, 255, 0.75);
}

.page-about .about-tl-item:nth-child(odd)::before {
  background: var(--cyan);
  box-shadow: 0 0 14px rgba(53, 225, 240, 0.7);
}

.page-about .about-tl-head {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  margin-bottom: 0.375rem;
}

.page-about .about-tl-ver {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.1em;
  color: var(--gold);
}

.page-about .about-tl-year {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--mist);
}

.page-about .about-tl-item h3 {
  margin: 0 0 0.375rem;
  font-size: 1.0625rem;
  line-height: 1.5;
  color: var(--star);
}

.page-about .about-tl-item > p {
  margin: 0 0 0.625rem;
  color: var(--mist);
  font-size: 0.9375rem;
  line-height: 1.8;
}

.page-about .about-tl-detail {
  margin-top: 0.5rem;
}

.page-about .about-tl-figure {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--hull);
}

.page-about .about-tl-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 8 / 3;
  object-fit: cover;
}

.page-about .about-tl-figure figcaption {
  padding: 0.625rem 0.875rem;
  border-top: 1px solid var(--line-soft);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--mist);
}

/* ---------- 团队 ---------- */
.page-about .about-team-wrap {
  display: grid;
  gap: var(--about-gap);
  margin-top: 1.75rem;
}

.page-about .about-crew {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-about .about-crew-row {
  display: grid;
  gap: 0.375rem;
  padding: 1.125rem 0;
  border-bottom: 1px solid var(--line-soft);
  transition: background 200ms var(--ease);
}

.page-about .about-crew-row:hover {
  background: rgba(53, 225, 240, 0.05);
}

.page-about .about-crew-idx {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.12em;
  color: var(--gold);
}

.page-about .about-crew-name {
  margin: 0;
  font-size: 1.0625rem;
  color: var(--star);
}

.page-about .about-crew-desc {
  margin: 0;
  color: var(--mist);
  font-size: 0.9375rem;
  line-height: 1.8;
}

.page-about .about-crew-desc a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 225, 240, 0.4);
}

.page-about .about-crew-desc a:hover {
  color: var(--star);
  border-bottom-color: var(--star);
}

.page-about .about-team-figure {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--hull);
  position: relative;
}

.page-about .about-team-figure::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(7, 11, 24, 0.15), rgba(7, 11, 24, 0.65));
  pointer-events: none;
}

.page-about .about-team-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
}

.page-about .about-team-figure figcaption {
  position: relative;
  z-index: 1;
  padding: 0.625rem 0.875rem;
  border-top: 1px solid var(--line-soft);
  font-size: 0.75rem;
  color: var(--mist);
}

/* ---------- 三原则 ---------- */
.page-about .about-rules {
  list-style: none;
  margin: 1.75rem 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line);
}

.page-about .about-rule {
  display: grid;
  gap: 0.75rem;
  padding: 1.5rem 1.25rem;
  background: var(--deep);
}

.page-about .about-rule-mark {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1;
  color: var(--violet);
}

.page-about .about-rule-body h3 {
  margin: 0 0 0.5rem;
  font-size: 1.125rem;
  color: var(--star);
}

.page-about .about-rule-body p {
  margin: 0;
  max-width: 38em;
  color: var(--mist);
  font-size: 0.9375rem;
  line-height: 1.8;
}

/* ---------- 合作生态 ---------- */
.page-about .about-net {
  list-style: none;
  margin: 1.75rem 0 0;
  padding: 0;
  display: grid;
  gap: 1.25rem;
}

.page-about .about-net-item {
  padding-top: 1rem;
  border-top: 2px solid var(--line);
}

.page-about .about-net-item--violet {
  border-top-color: var(--violet);
}

.page-about .about-net-item--cyan {
  border-top-color: var(--cyan);
}

.page-about .about-net-item--gold {
  border-top-color: var(--gold);
}

.page-about .about-net-item h3 {
  margin: 0 0 0.5rem;
  font-size: 1.0625rem;
  color: var(--star);
}

.page-about .about-net-item p {
  margin: 0;
  color: var(--mist);
  font-size: 0.9375rem;
  line-height: 1.8;
}

/* ---------- 更新节奏 ---------- */
.page-about .about-cadence {
  display: flex;
  align-items: flex-start;
  gap: 0.875rem;
  margin-top: 1.5rem;
  padding: 1.25rem;
  border: 1px solid var(--line);
  background: rgba(22, 34, 74, 0.45);
}

.page-about .about-cadence-dot {
  flex: none;
  width: 9px;
  height: 9px;
  margin-top: 0.45rem;
  background: var(--cyan);
  box-shadow: 0 0 14px rgba(53, 225, 240, 0.85);
}

.page-about .about-cadence-main {
  margin: 0;
  color: var(--star);
  font-size: 0.9375rem;
  line-height: 1.85;
}

.page-about .about-cadence-num {
  display: inline-block;
  margin-right: 0.5rem;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--gold);
}

.page-about .about-cadence-note {
  margin: 1.25rem 0 0;
  color: var(--mist);
}

.page-about .about-cadence-note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 225, 240, 0.4);
}

.page-about .about-cadence-note a:hover {
  color: var(--star);
  border-bottom-color: var(--star);
}

/* ---------- 站点信息 ---------- */
.page-about .about-registry {
  margin: 1.5rem 0 0;
  border-top: 1px solid var(--line);
}

.page-about .about-registry-row {
  display: grid;
  gap: 0.25rem;
  padding: 0.875rem 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-about .about-registry-row dt {
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  color: var(--mist);
}

.page-about .about-registry-row dd {
  margin: 0;
  color: var(--star);
  font-size: 0.9375rem;
  line-height: 1.7;
  word-break: break-word;
}

.page-about .about-registry-row dd.num {
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
  color: var(--gold);
}

.page-about .about-registry-note {
  margin: 1.25rem 0 0;
  max-width: 38em;
  color: var(--mist);
  font-size: 0.9375rem;
  line-height: 1.8;
}

.page-about .about-registry-note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 225, 240, 0.4);
}

.page-about .about-registry-note a:hover {
  color: var(--star);
  border-bottom-color: var(--star);
}

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

  .page-about .about-net {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.75rem;
  }
}

@media (min-width: 768px) {
  .page-about {
    --about-pad: 1.75rem;
  }

  .page-about .about-hero-inner {
    padding-top: 2rem;
    padding-bottom: 3.5rem;
  }

  .page-about .about-band {
    padding-top: 3rem;
    padding-bottom: 3rem;
  }

  .page-about .about-rule {
    grid-template-columns: 64px minmax(0, 1fr);
    align-items: start;
    padding: 1.75rem 1.5rem;
  }

  .page-about .about-registry-row {
    grid-template-columns: 148px minmax(0, 1fr);
    align-items: baseline;
    gap: 1rem;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero-inner {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: center;
    gap: 3rem;
    padding-top: 2.5rem;
    padding-bottom: 4rem;
  }

  .page-about .about-tl-wrap {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.65fr);
    align-items: start;
    gap: 3rem;
  }

  .page-about .about-tl-figure {
    position: sticky;
    top: 96px;
  }

  .page-about .about-crew-row {
    grid-template-columns: 52px 168px minmax(0, 1fr);
    align-items: baseline;
    gap: 0 1.25rem;
    padding: 1.25rem 0;
  }
}

@media (min-width: 1000px) {
  .page-about .about-team-wrap {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.7fr);
    align-items: start;
    gap: 3rem;
  }
}

@media (min-width: 1080px) {
  .page-about .about-grid {
    grid-template-columns: minmax(0, 1fr) 200px;
    gap: 3.5rem;
  }

  .page-about .about-anchor {
    display: block;
    position: sticky;
    top: 96px;
    align-self: start;
    padding-left: 0.25rem;
  }
}
<<<END>>>