.page-about {
  --about-axis: 180px;
  --about-line: 2px solid var(--ink);
  background: var(--paper);
  color: var(--ink);
  padding-bottom: clamp(32px, 5vw, 56px);
  font-family: var(--font-body);
}

.page-about .breadcrumb {
  padding: clamp(14px, 2.4vw, 24px) 0 0;
  font-size: 13px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding: clamp(20px, 4vw, 44px) 0 clamp(32px, 5vw, 64px);
  border-bottom: var(--about-line);
}

.page-about .hero-grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
}

.page-about .hero-copy .coord {
  margin: 0 0 clamp(12px, 2vw, 20px);
}

.page-about .hero-copy .display--hero {
  margin: 0 0 clamp(16px, 2.4vw, 24px);
}

.page-about .hero-copy .lede {
  margin: 0;
  max-width: 46ch;
  color: var(--muted);
}

.page-about .hero-facts {
  list-style: none;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--ink);
  border: var(--about-line);
}

.page-about .hero-facts li {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 12px 14px;
  background: var(--paper);
  font-size: 13px;
  line-height: 1.4;
  color: var(--muted);
}

.page-about .hero-facts .num {
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1;
  color: var(--moss);
}

.page-about .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 28px);
}

.page-about .hero-figure {
  margin: 0;
}

.page-about .hero-frame {
  aspect-ratio: 5 / 4;
  margin: 0;
}

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

.page-about .hero-figure figcaption {
  margin-top: 10px;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--muted);
}

/* ---------- 坐标轴 + 内容 ---------- */
.page-about .axis-layout {
  padding-top: clamp(28px, 4vw, 52px);
}

.page-about .axis {
  display: none;
}

.page-about .axis-title {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

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

.page-about .axis-list::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: var(--mist);
}

.page-about .axis-link {
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 0 9px 22px;
  font-size: 14px;
  line-height: 1.3;
  color: var(--ink);
  text-decoration: none;
  transition: color 0.12s var(--ease);
}

.page-about .axis-link::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 12px;
  height: 12px;
  margin-top: -6px;
  background: var(--frost);
  border: var(--about-line);
  transition: background 0.12s var(--ease);
}

.page-about .axis-item--spring .axis-link::before { background: var(--spring); }
.page-about .axis-item--summer .axis-link::before { background: var(--lake); }
.page-about .axis-item--autumn .axis-link::before { background: var(--amber); }
.page-about .axis-item--winter .axis-link::before { background: var(--mist); }
.page-about .axis-item--moss .axis-link::before { background: var(--moss); }
.page-about .axis-item--orange .axis-link::before { background: var(--orange); }

.page-about .axis-link:hover,
.page-about .axis-link:focus-visible {
  color: var(--moss);
}

.page-about .axis-link:hover::before,
.page-about .axis-link:focus-visible::before {
  background: var(--orange);
}

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

/* ---------- 章节通用 ---------- */
.page-about .stage {
  padding: clamp(30px, 5vw, 56px) 0;
  border-top: var(--about-line);
}

.page-about .stage:first-child {
  border-top: none;
  padding-top: 0;
}

.page-about .section-head {
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-about .section-head .coord {
  margin: 0 0 12px;
}

.page-about .section-head .display--section {
  margin: 0 0 12px;
}

.page-about .section-lede {
  margin: 0;
  max-width: 58ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 发布流程 ---------- */
.page-about .flow {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .flow-step {
  padding: 14px 14px 16px;
  background: var(--paper);
  border: var(--about-line);
  border-top: 8px solid var(--mist);
  box-shadow: var(--shadow-hard-sm);
  transition: transform 0.16s var(--ease), box-shadow 0.16s var(--ease);
}

.page-about .flow-step--spring { border-top-color: var(--spring); }
.page-about .flow-step--summer { border-top-color: var(--lake); }
.page-about .flow-step--autumn { border-top-color: var(--amber); }
.page-about .flow-step--winter { border-top-color: var(--mist); }

.page-about .flow-step:hover {
  transform: translateY(-2px);
  box-shadow: 6px 8px 0 var(--ink);
}

.page-about .flow-idx {
  display: block;
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.page-about .flow-owner {
  display: inline-block;
  margin: 8px 0 10px;
  padding: 1px 6px;
  font-size: 11px;
  line-height: 1.6;
  border: 1px solid var(--ink);
}

.page-about .flow-step h3 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 16px;
  line-height: 1.35;
}

.page-about .flow-step p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

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

.page-about .team-card {
  position: relative;
  padding: 20px 18px 18px;
  background: var(--wash);
  border: var(--about-line);
  border-left: 8px solid var(--mist);
  box-shadow: var(--shadow-hard);
  transition: transform 0.16s var(--ease), box-shadow 0.16s var(--ease);
}

.page-about .team-card--spring { border-left-color: var(--spring); }
.page-about .team-card--summer { border-left-color: var(--lake); }
.page-about .team-card--autumn { border-left-color: var(--amber); }
.page-about .team-card--winter { border-left-color: var(--mist); }

.page-about .team-card:hover {
  transform: translateY(-2px);
  box-shadow: 8px 8px 0 var(--ink);
}

.page-about .team-num {
  display: block;
  font-size: clamp(38px, 6vw, 54px);
  line-height: 0.9;
  letter-spacing: -0.02em;
  color: var(--moss);
}

.page-about .team-role {
  margin: 8px 0 10px;
  font-family: var(--font-display);
  font-size: 18px;
  line-height: 1.35;
}

.page-about .team-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted);
}

.page-about .team-card .team-foot {
  margin: 14px 0 0;
  padding-top: 10px;
  border-top: 1px dashed var(--mist);
  font-size: 12px;
  letter-spacing: 0.03em;
  color: var(--moss);
}

/* ---------- 沿革 ---------- */
.page-about .lineage {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .lineage-item {
  display: grid;
  gap: 8px;
  padding: 20px 0;
  border-top: 2px dashed var(--mist);
}

.page-about .lineage-item:first-child {
  border-top: none;
  padding-top: 0;
}

.page-about .lineage-head {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.page-about .lineage-code {
  margin: 0;
  font-size: clamp(28px, 5vw, 40px);
  line-height: 1;
  color: var(--moss);
}

.page-about .lineage-era {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.page-about .lineage-item--spring .lineage-code { color: var(--spring); }
.page-about .lineage-item--summer .lineage-code { color: var(--lake); }
.page-about .lineage-item--autumn .lineage-code { color: var(--amber); }

.page-about .lineage-body h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 19px;
  line-height: 1.35;
}

.page-about .lineage-body p {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .lineage-figure {
  margin: clamp(24px, 4vw, 36px) 0 0;
}

.page-about .lineage-figure .media-frame {
  margin: 0;
}

.page-about .lineage-figure img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-about .lineage-figure figcaption {
  margin-top: 10px;
  font-size: 12px;
  letter-spacing: 0.03em;
  color: var(--muted);
}

/* ---------- 适配检测 ---------- */
.page-about .stage--texture {
  position: relative;
  overflow: hidden;
}

.page-about .stage-texture {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.14;
  filter: grayscale(1);
  pointer-events: none;
  z-index: 0;
}

.page-about .stage-inner {
  position: relative;
  z-index: 1;
}

.page-about .adapt-grid {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
}

.page-about .adapt-copy p {
  margin: 0 0 1.1em;
  font-size: 16px;
  line-height: 1.82;
  color: var(--ink);
}

.page-about .adapt-copy p:last-child {
  margin-bottom: 0;
}

.page-about .adapt-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  border: var(--about-line);
  background: var(--paper);
  box-shadow: var(--shadow-hard-sm);
}

.page-about .adapt-steps li {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 12px 14px;
  font-size: 15px;
  line-height: 1.6;
  border-top: 1px solid var(--mist);
}

.page-about .adapt-steps li:first-child {
  border-top: none;
}

.page-about .adapt-steps .mono {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--lake);
}

/* ---------- 渠道与客户 ---------- */
.page-about .network-stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-about .network-stats li {
  padding: 18px 16px;
  background: var(--frost);
  border: var(--about-line);
  box-shadow: var(--shadow-hard-sm);
}

.page-about .net-num {
  display: block;
  font-size: clamp(36px, 6vw, 52px);
  line-height: 0.95;
  letter-spacing: -0.02em;
  color: var(--moss);
}

.page-about .network-stats h3 {
  margin: 6px 0 10px;
  font-family: var(--font-display);
  font-size: 17px;
  line-height: 1.4;
}

.page-about .network-stats p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted);
}

.page-about .network-note {
  margin: clamp(18px, 3vw, 26px) 0 0;
  padding: 12px 0 12px 14px;
  border-left: 8px solid var(--orange);
  font-size: 15px;
  line-height: 1.78;
  color: var(--ink);
}

/* ---------- 三件事 ---------- */
.page-about .holds {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-about .hold {
  padding: 18px 16px 18px 18px;
  border: var(--about-line);
  border-left: 8px solid var(--mist);
  background: var(--paper);
}

.page-about .hold--autumn { border-left-color: var(--amber); }
.page-about .hold--summer { border-left-color: var(--lake); }
.page-about .hold--winter { border-left-color: var(--mist); }

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

.page-about .hold h3 {
  margin: 8px 0 8px;
  font-family: var(--font-display);
  font-size: 19px;
  line-height: 1.35;
}

.page-about .hold p {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 结尾入口 ---------- */
.page-about .about-cta {
  margin-top: clamp(32px, 5vw, 60px);
  padding: clamp(32px, 5vw, 60px) 0;
  background: var(--moss);
  color: var(--paper);
}

.page-about .about-cta .coord {
  margin: 0 0 14px;
  color: var(--frost);
}

.page-about .about-cta .coord::before {
  background: var(--spring);
}

.page-about .about-cta .display--section {
  margin: 0 0 12px;
  color: var(--paper);
}

.page-about .cta-lede {
  margin: 0 0 clamp(20px, 3vw, 28px);
  max-width: 52ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--frost);
}

.page-about .cta-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .about-cta .cta-ghost {
  background: transparent;
  color: var(--paper);
  border-color: var(--paper);
  box-shadow: none;
}

.page-about .about-cta .cta-ghost:hover {
  background: var(--paper);
  color: var(--moss);
}

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

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

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

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

  .page-about .network-stats li:first-child {
    grid-column: 1 / -1;
  }
}

@media (min-width: 900px) {
  .page-about .hero-grid {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.7fr);
    gap: clamp(32px, 5vw, 64px);
  }

  .page-about .axis-layout {
    display: grid;
    grid-template-columns: var(--about-axis) minmax(0, 1fr);
    gap: clamp(28px, 4vw, 56px);
    align-items: start;
  }

  .page-about .axis {
    display: block;
    position: sticky;
    top: 96px;
  }

  .page-about .lineage-item {
    grid-template-columns: 130px minmax(0, 1fr);
    gap: clamp(20px, 3vw, 36px);
    padding: 26px 0;
  }

  .page-about .lineage-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }

  .page-about .adapt-grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: start;
  }

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

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

  .page-about .network-stats li:first-child {
    grid-column: auto;
  }
}

@media (min-width: 1080px) {
  .page-about .flow {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .flow-step,
  .page-about .team-card,
  .page-about .axis-link,
  .page-about .axis-link::before {
    transition: none;
  }

  .page-about .flow-step:hover,
  .page-about .team-card:hover {
    transform: none;
  }
}
<<<END>>>