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

.page-about .crumbs {
  padding-top: 18px;
  padding-bottom: 18px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  background: var(--ink);
  color: var(--paper);
  padding: 28px 0 48px;
  border-bottom: 3px solid var(--clay);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  right: -28%;
  bottom: -62%;
  width: 78%;
  aspect-ratio: 1 / 1;
  border: 3px solid rgba(242, 179, 52, 0.2);
  border-radius: 50%;
  pointer-events: none;
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 32px;
}

.page-about .about-hero .h-display {
  margin: 12px 0 0;
  color: var(--paper);
  text-wrap: balance;
}

.page-about .about-hero .lede {
  margin-top: 16px;
  color: rgba(244, 247, 242, 0.82);
  max-width: 36em;
}

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: 28px;
  background: var(--pitch);
  border: 1px solid var(--pitch);
}

.page-about .stat {
  background: var(--ink);
  padding: 14px 12px 16px;
}

.page-about .stat__value {
  display: flex;
  align-items: baseline;
  gap: 3px;
  margin: 0;
}

.page-about .stat__value .num {
  color: var(--amber);
  font-size: clamp(24px, 6.5vw, 34px);
  line-height: 1.05;
}

.page-about .stat__unit {
  font-size: 12px;
  color: var(--paper);
  letter-spacing: 0.06em;
}

.page-about .stat__label {
  margin: 8px 0 0;
  font-size: 12px;
  line-height: 1.5;
  letter-spacing: 0.04em;
  color: var(--muted);
}

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

.page-about .about-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 3px solid var(--clay);
  box-shadow: 10px 10px 0 rgba(0, 0, 0, 0.35);
  background: var(--seat);
}

.page-about .about-hero__figure figcaption,
.page-about .about-track__figure figcaption,
.page-about .about-crew__figure figcaption {
  margin-top: 12px;
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: 0.04em;
  color: var(--muted);
}

/* ---------- 通用标题间距 ---------- */
.page-about .h-section {
  margin: 12px 0 0;
  text-wrap: balance;
}

.page-about .lede {
  margin-top: 14px;
  max-width: 40em;
}

.page-about .prose {
  margin-top: 14px;
}

/* ---------- 出发的地方 ---------- */
.page-about .about-origin__body {
  display: grid;
  gap: 28px;
  margin-top: 24px;
}

.page-about .origin-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-about .origin-list li {
  border-left: 3px solid var(--clay);
  padding: 2px 0 2px 14px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--graphite);
}

.page-about .origin-list b {
  display: block;
  margin-bottom: 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--clay);
}

/* ---------- 时间线 ---------- */
.page-about .about-track {
  background: var(--screen);
}

.page-about .timeline {
  position: relative;
  list-style: none;
  margin: 32px 0 0;
  padding: 0;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 10px;
  top: 6px;
  bottom: 10px;
  width: 3px;
  background: linear-gradient(180deg, var(--pitch), var(--clay));
}

.page-about .timeline__item {
  position: relative;
  padding-left: 34px;
  padding-bottom: 32px;
  display: grid;
  gap: 14px;
}

.page-about .timeline__item::before {
  content: "";
  position: absolute;
  left: 1px;
  top: 6px;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: var(--amber);
  border: 3px solid var(--ink);
}

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

.page-about .timeline__stage {
  background: var(--seat);
  color: var(--paper);
  border: 2px solid var(--ink);
  box-shadow: var(--shadow-soft);
  padding: 18px 16px 20px;
}

.page-about .timeline__index {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--amber);
  text-transform: uppercase;
}

.page-about .timeline__stage .h-card {
  margin: 0;
  color: var(--paper);
}

.page-about .timeline__stage p {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(244, 247, 242, 0.82);
}

.page-about .timeline__extra {
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  margin: 0;
  font-size: 13px !important;
  color: var(--muted) !important;
  transition: max-height 0.25s ease, opacity 0.25s ease, margin-top 0.25s ease;
}

.page-about .timeline__verdict {
  padding-top: 2px;
}

.page-about .timeline__verdict .num {
  margin: 0;
  font-size: clamp(36px, 9vw, 54px);
  line-height: 1;
  color: var(--clay);
}

.page-about .timeline__note {
  margin: 8px 0 0;
  max-width: 22em;
  font-size: 14px;
  line-height: 1.7;
  color: var(--graphite);
}

.page-about .about-track__figure {
  margin: 40px 0 0;
}

.page-about .about-track__figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 3px solid var(--ink);
  box-shadow: var(--shadow-hard);
  background: var(--seat);
}

/* ---------- 团队 ---------- */
.page-about .about-crew {
  background: var(--paper);
}

.page-about .about-crew__grid {
  display: grid;
  gap: 32px;
}

.page-about .crew-facts {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .crew-facts li {
  border: var(--line-hard);
  background: var(--screen);
  padding: 12px 14px;
}

.page-about .crew-facts .num {
  display: block;
  font-size: 26px;
  line-height: 1.1;
  color: var(--ink);
}

.page-about .crew-facts span:last-child {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--graphite);
}

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

.page-about .about-crew__figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 3px solid var(--ink);
  box-shadow: var(--shadow-hard);
  background: var(--screen);
}

/* ---------- 合作生态 ---------- */
.page-about .about-partner .h-section {
  color: var(--paper);
}

.page-about .about-partner .lede {
  color: rgba(244, 247, 242, 0.78);
}

.page-about .about-partner__groups {
  display: grid;
  gap: 32px;
  margin-top: 34px;
}

.page-about .partner-group {
  border-top: 3px solid var(--clay);
  padding-top: 16px;
}

.page-about .partner-group .h-card {
  margin: 0;
  color: var(--paper);
}

.page-about .partner-group p {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(244, 247, 242, 0.78);
}

.page-about .tag-wall {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .partner-tag {
  border: 2px solid var(--pitch);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  padding: 6px 10px;
  transition: background 0.18s ease, border-color 0.18s ease, transform 0.18s ease;
}

.page-about .partner-tag:hover,
.page-about .partner-tag:focus-visible {
  background: var(--pitch);
  border-color: var(--amber);
  transform: translateY(-2px);
}

/* ---------- 维护节奏 ---------- */
.page-about .release-list {
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
  border-top: var(--line-hard);
}

.page-about .release-list li {
  display: grid;
  grid-template-columns: 84px minmax(0, 1fr);
  gap: 14px;
  align-items: baseline;
  padding: 18px 0;
  border-bottom: var(--line-hard);
}

.page-about .release-list .num {
  font-size: clamp(24px, 6vw, 34px);
  line-height: 1;
  color: var(--clay);
}

.page-about .release-list p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--graphite);
}

/* ---------- 四条要求 ---------- */
.page-about .creed-grid {
  display: grid;
  gap: 16px;
  margin-top: 30px;
}

.page-about .creed-card {
  position: relative;
  border: var(--line-hard);
  background: var(--screen);
  padding: 20px 18px 20px 18px;
}

.page-about .creed-card__num {
  display: block;
  margin-bottom: 10px;
  font-size: 28px;
  line-height: 1;
  color: var(--clay);
}

.page-about .creed-card .h-card {
  margin: 0;
}

.page-about .creed-card p {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--graphite);
}

/* ---------- 结尾入口 ---------- */
.page-about .about-cta {
  background: var(--clay);
  color: var(--paper);
  border-top: 3px solid var(--clay-dark);
  border-bottom: 3px solid var(--clay-dark);
  padding: 34px 0;
}

.page-about .about-cta__inner {
  display: grid;
  gap: 20px;
}

.page-about .about-cta p {
  margin: 0;
  font-size: clamp(18px, 4vw, 22px);
  line-height: 1.5;
  font-weight: 700;
}

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

/* ---------- 媒体查询 ---------- */
@media (min-width: 620px) {
  .page-about .crew-facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .creed-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }

  .page-about .release-list li {
    grid-template-columns: 130px minmax(0, 1fr);
    gap: 24px;
  }
}

@media (min-width: 860px) {
  .page-about .about-hero {
    padding: 36px 0 64px;
  }

  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: 48px;
    align-items: end;
  }

  .page-about .about-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    margin-top: 36px;
  }

  .page-about .about-origin__body {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: 52px;
  }

  .page-about .timeline::before {
    left: 9px;
  }

  .page-about .timeline__item {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: 40px;
    padding-left: 44px;
    align-items: start;
    padding-bottom: 40px;
  }

  .page-about .timeline__item::before {
    left: 0;
  }

  .page-about .about-crew__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 56px;
    align-items: start;
  }

  .page-about .about-partner__groups {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 48px;
  }

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

@media (hover: hover) and (pointer: fine) {
  .page-about .timeline__item:hover .timeline__extra,
  .page-about .timeline__item:focus-within .timeline__extra {
    max-height: 8em;
    opacity: 1;
    margin-top: 10px;
  }
}

@media (hover: none) {
  .page-about .timeline__extra {
    max-height: none;
    opacity: 1;
    margin-top: 10px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .timeline__extra,
  .page-about .partner-tag {
    transition: none;
  }
}
<<<END>>>