.page-about {
  --about-rail: 150px;
  --about-pad: 24px;
  background: var(--c-void);
  color: var(--c-text);
  font-family: var(--font-body);
  padding-bottom: 88px;
  overflow-x: hidden;
}

.page-about .breadcrumb {
  max-width: var(--content-w);
  margin: 0 auto;
  padding: 20px var(--about-pad) 0;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  display: grid;
  gap: 32px;
  max-width: var(--content-w);
  margin: 0 auto;
  padding: 28px var(--about-pad) 48px;
}

.page-about .about-hero__copy .eyebrow {
  margin: 0 0 14px;
  color: var(--c-amber);
}

.page-about .about-hero__copy .display-title {
  margin: 0 0 20px;
  color: var(--c-text);
}

.page-about .about-hero__copy .lede {
  max-width: 34em;
  margin: 0;
  color: var(--c-muted);
  line-height: 1.85;
}

.page-about .about-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 32px;
  margin: 28px 0 0;
  padding: 20px 0 0;
  list-style: none;
  border-top: 1px solid var(--c-line);
}

.page-about .about-stat {
  min-width: 96px;
}

.page-about .about-stat b {
  display: block;
  font-family: var(--font-mono);
  font-size: 26px;
  letter-spacing: 0.03em;
  color: var(--c-orange);
  line-height: 1.1;
}

.page-about .about-stat span {
  display: block;
  margin-top: 4px;
  font-size: 12px;
  color: var(--c-muted);
}

.page-about .about-hero__media {
  margin: 0;
  position: relative;
  transform: rotate(-1.5deg);
  border-radius: var(--r-panel);
  overflow: hidden;
  box-shadow: var(--shadow-lift);
}

.page-about .about-hero__media::after {
  content: "";
  position: absolute;
  inset: auto -10% -30% 30%;
  height: 55%;
  background: radial-gradient(closest-side, rgba(138, 107, 255, 0.45), transparent 70%);
  pointer-events: none;
}

.page-about .media {
  border-radius: var(--r-panel);
  overflow: hidden;
}

.page-about .media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .media__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--c-cyan);
}

/* ---------- 档案章节 ---------- */
.page-about .about-chapter {
  display: grid;
  gap: 18px;
  max-width: var(--content-w);
  margin: 0 auto;
  padding: 44px var(--about-pad);
  border-top: 1px solid var(--c-line);
}

.page-about .about-chapter__side {
  display: flex;
  align-items: center;
  gap: 14px;
}

.page-about .about-chapter__no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: var(--c-panel);
  border: 1px solid var(--c-line);
  font-size: 12px;
  color: var(--c-amber);
}

.page-about .about-chapter__year {
  font-family: var(--font-mono);
  font-size: 20px;
  letter-spacing: 0.08em;
  color: var(--c-amber);
}

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

.page-about .about-chapter__body .section-title {
  margin: 0 0 18px;
  color: var(--c-text);
}

.page-about .about-chapter__body p {
  max-width: 38em;
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-muted);
}

.page-about .about-quote {
  margin-top: 22px !important;
  padding: 18px 22px;
  border-left: 3px solid var(--c-orange);
  border-radius: 0 var(--r-card) var(--r-card) 0;
  background: linear-gradient(120deg, rgba(255, 122, 61, 0.12), rgba(138, 107, 255, 0.08));
  color: var(--c-text) !important;
  font-size: 16px !important;
  font-weight: 600;
}

.page-about .about-links {
  max-width: 38em;
  margin: 22px 0 0 !important;
  padding-top: 18px;
  border-top: 1px dashed var(--c-line);
}

.page-about .about-links a {
  color: var(--c-amber);
  text-decoration: underline;
  text-underline-offset: 4px;
  transition: color var(--dur) var(--ease);
}

.page-about .about-links a:hover,
.page-about .about-links a:focus-visible {
  color: var(--c-orange);
}

/* ---------- 空间卡片 ---------- */
.page-about .space-grid {
  display: grid;
  gap: 16px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .space-card {
  padding: 20px 18px;
}

.page-about .space-card .tag {
  display: inline-block;
  margin-bottom: 10px;
}

.page-about .space-card h3 {
  margin: 0 0 8px;
  font-size: 17px;
  color: var(--c-text);
}

.page-about .space-card p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--c-muted);
}

/* ---------- 整宽打断图 ---------- */
.page-about .about-wide {
  max-width: var(--content-w);
  margin: 0 auto;
  padding: 8px var(--about-pad) 0;
}

.page-about .about-wide .media--slant {
  border-radius: var(--r-panel);
  overflow: hidden;
  box-shadow: var(--shadow-lift);
}

.page-about .about-wide__cap {
  display: block;
  margin-top: 14px;
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--c-dim);
}

/* ---------- 团队 ---------- */
.page-about .team-grid {
  display: grid;
  gap: 16px;
  margin-top: 24px;
}

.page-about .team-card {
  padding: 22px 20px;
}

.page-about .team-card h3 {
  margin: 0 0 10px;
  font-size: 15px;
  font-weight: 600;
  color: var(--c-text);
}

.page-about .team-card h3 .mono {
  color: var(--c-cyan);
  font-size: 20px;
  margin-right: 4px;
}

.page-about .team-card p {
  margin: 0 !important;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--c-muted);
}

.page-about .about-team-media {
  margin: 26px 0 0;
}

.page-about .about-team-media .media {
  border-radius: var(--r-panel);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.page-about .about-team-media .media__label {
  display: block;
  margin-top: 12px;
}

/* ---------- 时间轴 ---------- */
.page-about .timeline {
  position: relative;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: linear-gradient(180deg, var(--c-cyan), var(--c-violet) 62%, transparent);
}

.page-about .timeline__item {
  position: relative;
  padding: 0 0 20px 32px;
  outline: none;
}

.page-about .timeline__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 18px;
  width: 13px;
  height: 13px;
  border-radius: var(--r-pill);
  background: var(--c-void);
  border: 2px solid var(--c-cyan);
  box-shadow: 0 0 0 4px rgba(95, 211, 232, 0.12);
  transition: background var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

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

.page-about .timeline__card {
  padding: 18px 20px;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .timeline__item:hover .timeline__card,
.page-about .timeline__item:focus-within .timeline__card,
.page-about .timeline__item:focus .timeline__card {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lift);
  border-color: var(--c-violet);
}

.page-about .timeline__item:hover::before,
.page-about .timeline__item:focus::before,
.page-about .timeline__item:focus-within::before {
  background: var(--c-cyan);
  box-shadow: 0 0 0 6px rgba(95, 211, 232, 0.18);
}

.page-about .timeline__year {
  display: block;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--c-amber);
  margin-bottom: 6px;
}

.page-about .timeline__card h3 {
  margin: 0 0 8px;
  font-size: 16px;
  color: var(--c-text);
}

.page-about .timeline__card p {
  margin: 0 !important;
  font-size: 13.5px;
  line-height: 1.75;
}

.page-about .timeline__more {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  color: var(--c-dim) !important;
  transition: max-height var(--dur) var(--ease), opacity var(--dur) var(--ease);
}

.page-about .timeline__item:hover .timeline__more,
.page-about .timeline__item:focus .timeline__more,
.page-about .timeline__item:focus-within .timeline__more {
  max-height: 140px;
  opacity: 1;
  margin-top: 8px !important;
}

/* ---------- 结尾引导 ---------- */
.page-about .about-next {
  width: calc(100% - 48px);
  max-width: calc(var(--content-w) - 48px);
  margin: 40px auto 0;
  padding: 34px 26px;
  border-radius: var(--r-panel);
  border: 1px solid var(--c-line);
  background: linear-gradient(135deg, rgba(138, 107, 255, 0.16), rgba(255, 122, 61, 0.1));
  display: grid;
  gap: 22px;
}

.page-about .about-next .section-title {
  margin: 0 0 12px;
  color: var(--c-text);
}

.page-about .about-next .lede {
  margin: 0;
  max-width: 34em;
  color: var(--c-muted);
  font-size: 15px;
  line-height: 1.8;
}

.page-about .about-next__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 断点 ---------- */
@media (min-width: 620px) {
  .page-about .space-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-chapter__body p {
    font-size: 16px;
  }
}

@media (min-width: 900px) {
  .page-about {
    --about-pad: 40px;
  }

  .page-about .about-hero {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: center;
    gap: 56px;
    padding-top: 44px;
    padding-bottom: 72px;
  }

  .page-about .about-chapter {
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
    gap: 56px;
    padding-top: 68px;
    padding-bottom: 68px;
  }

  .page-about .about-chapter__side {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
    position: sticky;
    top: calc(var(--bar-h) + 28px);
    align-self: start;
  }

  .page-about .about-chapter__year {
    writing-mode: vertical-rl;
    font-size: 24px;
    letter-spacing: 0.22em;
    color: var(--c-amber);
  }

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

  .page-about .space-card:nth-child(even) {
    margin-top: 28px;
  }

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

  .page-about .about-next {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    padding: 44px 40px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .timeline__card,
  .page-about .timeline__more,
  .page-about .timeline__item::before,
  .page-about .about-links a {
    transition: none;
  }

  .page-about .timeline__item:hover .timeline__card,
  .page-about .timeline__item:focus .timeline__card,
  .page-about .timeline__item:focus-within .timeline__card {
    transform: none;
  }
}
<<<END>>>