.page-about {
  --about-gap: clamp(18px, 3vw, 34px);
  --about-shift: clamp(0px, 4vw, 56px);
  color: var(--stone);
  font-family: var(--font-sans);
  overflow-x: clip;
}

.page-about .crumbs {
  margin-top: clamp(18px, 3vw, 30px);
  margin-bottom: clamp(14px, 2.4vw, 24px);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
  padding-bottom: clamp(30px, 5vw, 60px);
  border-bottom: 1px solid var(--hairline);
}

.page-about .about-hero__title {
  margin: 14px 0 0;
  font-size: clamp(33px, 5.6vw, 62px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  font-weight: 900;
  color: var(--paper);
}

.page-about .about-hero__lead {
  margin: 18px 0 0;
  max-width: 58ch;
  font-size: clamp(15.5px, 1.5vw, 17.5px);
  line-height: 1.88;
}

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: clamp(22px, 3vw, 32px);
}

.page-about .about-stat {
  padding: 13px 15px;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-sm);
  background: rgba(22, 21, 39, .72);
}

.page-about .about-stat__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(18px, 2vw, 22px);
  letter-spacing: 0.04em;
  color: var(--gold);
}

.page-about .about-stat__label {
  display: block;
  margin-top: 5px;
  font-size: 12.5px;
  color: var(--stone);
}

.page-about .about-hero__aside {
  position: relative;
  padding: clamp(20px, 3vw, 30px);
  padding-left: 48px;
  border: 1px solid var(--hairline-gold);
  border-radius: var(--radius);
  background:
    linear-gradient(155deg, rgba(242, 169, 59, .16), rgba(11, 11, 18, 0) 52%),
    linear-gradient(0deg, rgba(38, 224, 214, .06), rgba(11, 11, 18, 0) 40%),
    var(--panel-deep);
  box-shadow: var(--shadow-panel);
}

.page-about .about-hero__note {
  position: absolute;
  left: 12px;
  top: clamp(20px, 3vw, 30px);
  writing-mode: vertical-rl;
  font-size: 11px;
  letter-spacing: 0.3em;
  color: var(--stone);
  opacity: .78;
}

.page-about .about-hero__kicker {
  margin: 0;
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-about .about-hero__issue {
  margin: 14px 0 0;
  font-size: clamp(19px, 2.2vw, 24px);
  font-weight: 800;
  color: var(--paper);
  letter-spacing: -0.01em;
}

.page-about .about-hero__issue .mono {
  color: var(--gold);
}

.page-about .about-hero__aside-text {
  margin: 12px 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--stone);
}

.page-about .quick-links {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-about .quick-links__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 11px 14px;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-sm);
  background: rgba(11, 11, 18, .58);
  color: var(--paper);
  font-size: 14.5px;
  text-decoration: none;
  transition: border-color .22s ease, transform .22s ease;
}

.page-about .quick-links__link:hover,
.page-about .quick-links__link:focus-visible {
  border-color: var(--hairline-gold);
  transform: translateX(3px);
}

.page-about .quick-links__meta {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--gold);
}

/* ---------- 面板通用 ---------- */
.page-about .about-panel {
  padding: clamp(20px, 3vw, 34px);
}

.page-about .about-intro {
  margin: clamp(16px, 2.4vw, 22px) 0 0;
  max-width: 68ch;
  font-size: clamp(15.5px, 1.5vw, 17px);
  line-height: 1.85;
}

.page-about .about-after {
  margin: clamp(18px, 2.6vw, 26px) 0 0;
  max-width: 68ch;
  padding-left: 16px;
  border-left: 2px solid var(--hairline-gold);
  font-size: 15px;
  line-height: 1.85;
}

.page-about .about-sub {
  margin: 22px 0 0;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--stone);
  opacity: .85;
}

.page-about .about-note {
  margin: clamp(18px, 2.6vw, 24px) 0 0;
  display: inline-block;
  padding: 8px 14px;
  border: 1px dashed var(--hairline-gold);
  border-radius: 999px;
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--gold-soft);
}

.page-about .about-split {
  display: grid;
  gap: clamp(20px, 3vw, 34px);
  margin-top: clamp(18px, 2.6vw, 26px);
}

/* ---------- 图片位 ---------- */
.page-about .about-media {
  margin: 0;
}

.page-about .about-media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

/* ---------- 四步流程 ---------- */
.page-about .flow {
  position: relative;
  list-style: none;
  margin: clamp(20px, 3vw, 28px) 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .flow::before {
  content: "";
  position: absolute;
  left: 15px;
  top: 12px;
  bottom: 12px;
  width: 1px;
  background: var(--hairline-gold);
}

.page-about .flow__step {
  position: relative;
  padding: 15px 16px 17px 42px;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-sm);
  background: rgba(11, 11, 18, .5);
}

.page-about .flow__step::before {
  content: "";
  position: absolute;
  left: 10px;
  top: 23px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 4px rgba(242, 169, 59, .14);
}

.page-about .flow__num {
  display: block;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-about .flow__name {
  margin: 6px 0 0;
  font-size: 17px;
  font-weight: 800;
  color: var(--paper);
  letter-spacing: -0.01em;
}

.page-about .flow__desc {
  margin: 8px 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--stone);
}

/* ---------- 分类体系 ---------- */
.page-about .cat-cloud {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
}

.page-about .cat-cloud__item {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 13px;
  border: 1px solid var(--hairline-gold);
  border-radius: 999px;
  background: rgba(242, 169, 59, .08);
  color: var(--gold-soft);
  font-size: 14px;
  transition: background .2s ease, border-color .2s ease;
}

.page-about .cat-cloud__item:hover,
.page-about .cat-cloud__item:focus-within {
  background: rgba(242, 169, 59, .2);
  border-color: var(--gold);
}

.page-about .cat-cloud__sub {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--stone);
}

.page-about .tag-strip {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .tag-strip__item {
  padding: 5px 10px;
  border: 1px dashed var(--hairline);
  border-radius: 6px;
  font-size: 12.5px;
  color: var(--stone);
}

/* ---------- 团队 ---------- */
.page-about .team {
  margin-top: clamp(20px, 3vw, 28px);
  display: grid;
  gap: 12px;
}

.page-about .team__row {
  padding: 15px 17px;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-sm);
  background: rgba(11, 11, 18, .5);
}

.page-about .team__summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  cursor: pointer;
  list-style: none;
}

.page-about .team__summary::-webkit-details-marker,
.page-about .timeline__summary::-webkit-details-marker {
  display: none;
}

.page-about .team__name {
  font-size: 16px;
  font-weight: 800;
  color: var(--paper);
}

.page-about .team__num {
  font-size: 14px;
  color: var(--gold);
}

.page-about .team__bar {
  display: block;
  height: 6px;
  margin-top: 12px;
  border-radius: 999px;
}

.page-about .team__bar--gold {
  width: 38.7%;
  background: linear-gradient(90deg, var(--gold), var(--gold-soft));
}

.page-about .team__bar--cyan {
  width: 24.2%;
  background: linear-gradient(90deg, var(--cyan), rgba(38, 224, 214, .45));
}

.page-about .team__bar--rose {
  width: 21%;
  background: linear-gradient(90deg, var(--rose), rgba(255, 61, 139, .45));
}

.page-about .team__bar--moss {
  width: 16.1%;
  background: linear-gradient(90deg, var(--moss), rgba(92, 122, 99, .5));
}

.page-about .team__duties {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: grid;
  gap: 6px;
}

.page-about .team__duties li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--stone);
}

.page-about .team__duties li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 1px;
  background: var(--gold);
}

/* ---------- 时间轴 ---------- */
.page-about .timeline {
  position: relative;
  list-style: none;
  margin: clamp(18px, 2.6vw, 26px) 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 10px;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: var(--hairline-gold);
}

.page-about .timeline__node {
  position: relative;
  padding-left: 30px;
}

.page-about .timeline__node::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 18px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(38, 224, 214, .12);
}

.page-about .timeline__card {
  padding: 12px 15px;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-sm);
  background: rgba(22, 21, 39, .72);
}

.page-about .timeline__summary {
  display: flex;
  align-items: baseline;
  gap: 12px;
  cursor: pointer;
  list-style: none;
}

.page-about .timeline__year {
  font-size: 13px;
  color: var(--cyan);
}

.page-about .timeline__title {
  font-size: 16px;
  font-weight: 800;
  color: var(--paper);
}

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

/* ---------- 合作生态 ---------- */
.page-about .partners {
  list-style: none;
  margin: clamp(18px, 2.6vw, 26px) 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .partners__item {
  padding: 16px 18px;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-sm);
  background: rgba(11, 11, 18, .48);
}

.page-about .partners__item p {
  margin: 12px 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--stone);
}

/* ---------- 合作入口 ---------- */
.page-about .about-cta {
  display: grid;
  gap: 18px;
  background:
    linear-gradient(120deg, rgba(242, 169, 59, .1), rgba(255, 61, 139, .07) 60%, rgba(11, 11, 18, 0)),
    var(--panel);
}

.page-about .about-cta__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(18px, 2.6vw, 26px);
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

@media (min-width: 800px) {
  .page-about .flow {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0;
  }

  .page-about .flow::before {
    display: none;
  }

  .page-about .flow__step {
    padding: 30px 18px 18px;
    border: 0;
    border-top: 1px solid var(--hairline-gold);
    border-radius: 0;
    background: transparent;
  }

  .page-about .flow__step::before {
    left: 18px;
    top: -6px;
  }
}

@media (min-width: 960px) {
  .page-about .about-hero {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
    align-items: start;
  }

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

  .page-about .about-split--rev {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, .85fr);
  }

  .page-about .panel--offset {
    margin-left: var(--about-shift);
  }

  .page-about .timeline::before {
    left: 50%;
    transform: translateX(-50%);
  }

  .page-about .timeline {
    gap: 20px;
  }

  .page-about .timeline__node {
    width: 50%;
    padding-left: 0;
    padding-right: 34px;
  }

  .page-about .timeline__node:nth-child(even) {
    margin-left: 50%;
    padding-left: 34px;
    padding-right: 0;
  }

  .page-about .timeline__node::before {
    left: auto;
    right: -5px;
  }

  .page-about .timeline__node:nth-child(even)::before {
    left: -5px;
    right: auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about *,
  .page-about *::before,
  .page-about *::after {
    transition: none !important;
    animation: none !important;
  }
}
</PAGE_CSS>>>