.page-about {
  --about-body: rgba(244, 249, 255, 0.8);
  --about-head: #F4F9FF;
  --about-line: rgba(30, 147, 176, 0.28);
  --about-rail-w: 8rem;
  background: var(--ink);
  overflow-x: clip;
}

.page-about .shell {
  width: 100%;
}

/* ---------- 面包屑 ---------- */
.page-about .breadcrumb {
  padding-top: 1.5rem;
  padding-bottom: 0.25rem;
}

/* ---------- 首屏框景 ---------- */
.page-about .about-intro {
  position: relative;
  padding: clamp(1.75rem, 4vw, 3.25rem) 0 clamp(2.5rem, 5vw, 4.5rem);
}

.page-about .about-intro::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(20, 67, 90, 0.42) 1px, transparent 1px),
    linear-gradient(90deg, rgba(20, 67, 90, 0.42) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: radial-gradient(ellipse 70% 80% at 18% 26%, #000 12%, transparent 74%);
  mask-image: radial-gradient(ellipse 70% 80% at 18% 26%, #000 12%, transparent 74%);
  pointer-events: none;
}

.page-about .about-intro__frame {
  position: relative;
  border: 1px solid var(--line);
  padding: clamp(1.5rem, 4vw, 3.25rem);
  background:
    linear-gradient(152deg, rgba(11, 110, 138, 0.28) 0%, rgba(7, 23, 34, 0) 58%),
    var(--ink-2);
  box-shadow: 14px 14px 0 rgba(0, 0, 0, 0.42);
}

.page-about .about-intro__frame::before,
.page-about .about-intro__frame::after {
  content: "";
  position: absolute;
  width: 16px;
  height: 16px;
  border: 2px solid var(--teal);
  pointer-events: none;
}

.page-about .about-intro__frame::before {
  top: -2px;
  left: -2px;
  border-right: 0;
  border-bottom: 0;
}

.page-about .about-intro__frame::after {
  bottom: -2px;
  right: -2px;
  border-left: 0;
  border-top: 0;
}

.page-about .about-intro h1 {
  margin: 0.7rem 0 1.25rem;
  font-size: clamp(1.95rem, 5.4vw, 3.5rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  font-weight: 900;
  color: var(--about-head);
  max-width: 20ch;
}

.page-about .about-intro__lede {
  margin: 0 0 0.9rem;
  max-width: 46ch;
  font-size: clamp(0.98rem, 1.6vw, 1.12rem);
  line-height: 1.8;
  color: var(--about-body);
}

.page-about .about-intro__note {
  margin: 0;
  max-width: 44ch;
  font-size: var(--step-3);
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 数字条 ---------- */
.page-about .stat-strip {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 2rem 0 0;
  border: 1px solid var(--line);
  background: var(--line);
}

.page-about .stat-strip__item {
  background: var(--ink);
  padding: 1rem 1.1rem 1.15rem;
  min-width: 0;
}

.page-about .stat-strip dt {
  font-size: var(--step-1);
  letter-spacing: 0.14em;
  color: var(--muted);
  text-transform: uppercase;
}

.page-about .stat-strip dd {
  margin: 0.35rem 0 0;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.55rem, 3.4vw, 2.15rem);
  font-weight: 700;
  line-height: 1;
  color: var(--teal);
  letter-spacing: -0.01em;
}

.page-about .stat-strip .unit {
  font-size: 0.55em;
  margin-left: 0.15em;
  letter-spacing: 0.05em;
}

/* ---------- 章节骨架：左轨 + 右内容 ---------- */
.page-about .section {
  position: relative;
  padding: clamp(2.75rem, 6vw, 5rem) 0;
}

.page-about .chapter {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.25rem;
  scroll-margin-top: 6rem;
}

.page-about .chapter__rail {
  position: relative;
  display: flex;
  flex-direction: row;
  align-items: baseline;
  gap: 0.85rem;
  padding-left: 0.9rem;
}

.page-about .chapter__rail::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.35rem;
  bottom: 0.1rem;
  width: 1px;
  background: linear-gradient(180deg, var(--teal), rgba(0, 209, 193, 0.05));
}

.page-about .chapter__index {
  font-size: var(--step-2);
  color: var(--orange);
  letter-spacing: 0.08em;
}

.page-about .chapter__tag {
  font-size: var(--step-1);
  letter-spacing: 0.2em;
  color: var(--muted);
}

.page-about .chapter__body {
  max-width: 62ch;
  min-width: 0;
}

.page-about .chapter__body h2 {
  margin: 0 0 1.1rem;
  font-size: clamp(1.5rem, 3.4vw, 2.35rem);
  line-height: 1.18;
  letter-spacing: -0.015em;
  font-weight: 900;
  color: var(--about-head);
}

.page-about .chapter__body h3 {
  margin: 0 0 0.4rem;
  font-size: var(--step-4);
  font-weight: 700;
  color: var(--about-head);
}

.page-about .chapter__body p {
  margin: 0 0 1rem;
  font-size: var(--step-4);
  line-height: 1.85;
  color: var(--about-body);
}

/* ---------- 图片容器微调 ---------- */
.page-about .about-origin__photo {
  margin: 1.75rem 0 0;
  max-width: 26rem;
}

.page-about .about-flow__photo,
.page-about .about-local__photo {
  margin: 1.9rem 0 0;
}

/* ---------- 时间线区块 ---------- */
.page-about .section--roadmap {
  background:
    linear-gradient(180deg, rgba(7, 23, 34, 0.55), rgba(7, 23, 34, 0.2)),
    var(--ice);
  border-top: 1px solid rgba(0, 209, 193, 0.35);
  border-bottom: 1px solid rgba(0, 209, 193, 0.35);
}

.page-about .roadmap-heading {
  margin: 0.6rem 0 0;
  font-size: clamp(1.5rem, 3.6vw, 2.4rem);
  line-height: 1.18;
  letter-spacing: -0.015em;
  font-weight: 900;
  color: var(--snow);
  max-width: 26ch;
}

.page-about .roadmap {
  list-style: none;
  margin: 2.25rem 0 0;
  padding: 0;
}

.page-about .roadmap__item {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.55rem;
  padding: 1.5rem 0 1.6rem 1.1rem;
  border-top: 1px solid rgba(244, 249, 255, 0.24);
  scroll-margin-top: 6rem;
}

.page-about .roadmap__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 1.95rem;
  width: 9px;
  height: 9px;
  background: var(--orange);
  transform: rotate(45deg);
}

.page-about .roadmap__year {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.15rem, 2.2vw, 1.5rem);
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--snow);
}

.page-about .roadmap__body h3 {
  margin: 0 0 0.5rem;
  font-size: var(--step-4);
  font-weight: 700;
  color: var(--snow);
}

.page-about .roadmap__body p {
  margin: 0;
  max-width: 56ch;
  font-size: var(--step-3);
  line-height: 1.8;
  color: rgba(244, 249, 255, 0.86);
}

.page-about .year-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 2rem;
}

.page-about .year-jump__link {
  display: inline-block;
  padding: 0.42rem 0.85rem;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--step-2);
  letter-spacing: 0.06em;
  color: var(--snow);
  text-decoration: none;
  border: 1px solid rgba(244, 249, 255, 0.4);
  transition: background-color 0.18s ease, border-color 0.18s ease, color 0.18s ease;
}

.page-about .year-jump__link:hover,
.page-about .year-jump__link:focus-visible {
  background: var(--snow);
  border-color: var(--snow);
  color: var(--ice);
}

/* ---------- 角色分工 ---------- */
.page-about .role-grid {
  list-style: none;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin: 1.9rem 0 0;
  padding: 0;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .role-grid__item {
  background: var(--ink);
  padding: 1.3rem 1.25rem 1.4rem;
  transition: background-color 0.18s ease;
}

.page-about .role-grid__item:hover {
  background: var(--ink-2);
}

.page-about .role-grid__no {
  display: block;
  font-size: var(--step-2);
  color: var(--teal);
  letter-spacing: 0.14em;
  margin-bottom: 0.55rem;
}

.page-about .role-grid__item h3 {
  margin: 0 0 0.4rem;
  font-size: var(--step-4);
  font-weight: 700;
  color: var(--about-head);
}

.page-about .role-grid__item p {
  margin: 0;
  font-size: var(--step-3);
  line-height: 1.78;
  color: var(--about-body);
}

/* ---------- 生产流程 ---------- */
.page-about .section--flow {
  background: var(--ink-2);
  border-top: 1px solid rgba(20, 67, 90, 0.85);
}

.page-about .flow-list {
  counter-reset: none;
  list-style: none;
  margin: 1.9rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.6rem;
}

.page-about .flow-list__item {
  position: relative;
  padding-left: 2.9rem;
}

.page-about .flow-list__item::before {
  content: "";
  position: absolute;
  left: 1.02rem;
  top: 2.1rem;
  bottom: -1.7rem;
  width: 1px;
  background: var(--about-line);
}

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

.page-about .flow-list__no {
  position: absolute;
  left: 0;
  top: 0.1rem;
  width: 2.05rem;
  height: 2.05rem;
  display: grid;
  place-items: center;
  font-size: var(--step-2);
  font-weight: 700;
  color: var(--ink);
  background: var(--teal);
}

.page-about .flow-list__item h3 {
  margin: 0 0 0.35rem;
  font-size: var(--step-4);
  font-weight: 700;
  color: var(--about-head);
}

.page-about .flow-list__item p {
  margin: 0;
  font-size: var(--step-3);
  line-height: 1.8;
  color: var(--about-body);
}

.page-about .flow-note {
  margin: 1.9rem 0 0;
  padding: 0.95rem 1.1rem;
  border-left: 3px solid var(--amber);
  background: rgba(255, 176, 32, 0.08);
  font-size: var(--step-3);
  line-height: 1.8;
  color: var(--about-body);
}

/* ---------- 协作生态 ---------- */
.page-about .section--ecosystem {
  background:
    repeating-linear-gradient(90deg, rgba(20, 67, 90, 0.4) 0 1px, transparent 1px 72px),
    var(--ink);
}

.page-about .section--ecosystem h2 {
  margin: 0.6rem 0 0.9rem;
  font-size: clamp(1.5rem, 3.4vw, 2.35rem);
  line-height: 1.18;
  letter-spacing: -0.015em;
  font-weight: 900;
  color: var(--about-head);
  max-width: 24ch;
}

.page-about .network-lede {
  margin: 0 0 2.1rem;
  max-width: 50ch;
  font-size: var(--step-4);
  line-height: 1.85;
  color: var(--about-body);
}

.page-about .ecosystem {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .ecosystem__hub {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0.4rem;
  padding: 1.7rem 1.4rem;
  background: linear-gradient(160deg, rgba(11, 110, 138, 0.65), rgba(7, 23, 34, 0.95));
}

.page-about .ecosystem__hub-label {
  font-size: var(--step-1);
  letter-spacing: 0.2em;
  color: var(--teal);
}

.page-about .ecosystem__hub-name {
  font-size: clamp(1.4rem, 3vw, 1.9rem);
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--snow);
}

.page-about .ecosystem__hub-note {
  font-size: var(--step-2);
  letter-spacing: 0.08em;
  color: rgba(244, 249, 255, 0.72);
}

.page-about .ecosystem__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--line);
}

.page-about .ecosystem__node {
  background: var(--ink);
  padding: 1.4rem 1.3rem 1.5rem;
  transition: background-color 0.18s ease, box-shadow 0.18s ease;
}

.page-about .ecosystem__node:hover {
  background: var(--ink-2);
  box-shadow: inset 3px 0 0 var(--teal);
}

.page-about .ecosystem__num {
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  line-height: 1;
  color: var(--teal);
  margin-bottom: 0.6rem;
}

.page-about .ecosystem__node h3 {
  margin: 0 0 0.4rem;
  font-size: var(--step-4);
  font-weight: 700;
  color: var(--about-head);
}

.page-about .ecosystem__node p {
  margin: 0;
  font-size: var(--step-3);
  line-height: 1.78;
  color: var(--about-body);
}

/* ---------- CTA ---------- */
.page-about .section--cta {
  padding-bottom: clamp(3rem, 7vw, 5.5rem);
  background: var(--ink);
}

.page-about .cta-band {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.5rem;
  align-items: center;
  padding: clamp(1.5rem, 4vw, 2.6rem);
  border: 1px solid var(--line);
  background:
    linear-gradient(120deg, rgba(255, 106, 43, 0.14) 0%, rgba(7, 23, 34, 0) 62%),
    var(--ink-2);
  box-shadow: 12px 12px 0 rgba(0, 0, 0, 0.38);
}

.page-about .cta-band__text h2 {
  margin: 0 0 0.6rem;
  font-size: clamp(1.35rem, 3vw, 2rem);
  line-height: 1.2;
  font-weight: 900;
  letter-spacing: -0.015em;
  color: var(--about-head);
}

.page-about .cta-band__text p {
  margin: 0;
  max-width: 48ch;
  font-size: var(--step-3);
  line-height: 1.8;
  color: var(--about-body);
}

.page-about .cta-band__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

/* ---------- 响应式 ---------- */
@media (min-width: 560px) {
  .page-about .roadmap__item {
    grid-template-columns: 6rem minmax(0, 1fr);
    gap: 1.25rem;
    padding-left: 0;
  }

  .page-about .roadmap__item::before {
    left: 6.55rem;
  }

  .page-about .roadmap__item {
    padding-left: 1.6rem;
  }
}

@media (min-width: 720px) {
  .page-about .stat-strip {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .page-about .flow-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.9rem 2rem;
  }

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

  .page-about .ecosystem {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 2.1fr);
  }

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

@media (min-width: 900px) {
  .page-about .chapter {
    grid-template-columns: var(--about-rail-w) minmax(0, 1fr);
    gap: clamp(2rem, 4vw, 4rem);
  }

  .page-about .chapter__rail {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
    position: sticky;
    top: 7.5rem;
    align-self: start;
    padding-left: 1rem;
  }

  .page-about .chapter__rail::before {
    top: 0.4rem;
    bottom: auto;
    height: 5.5rem;
  }

  .page-about .roadmap__item {
    grid-template-columns: 7.5rem minmax(0, 1fr);
    gap: 2rem;
    padding: 1.8rem 0 1.9rem 1.7rem;
  }

  .page-about .roadmap__item::before {
    left: 8.1rem;
    top: 2.25rem;
  }

  .page-about .cta-band {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 2.5rem;
  }

  .page-about .cta-band__actions {
    justify-content: flex-end;
  }
}

@media (min-width: 1180px) {
  .page-about .about-origin__photo {
    max-width: 28rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .year-jump__link,
  .page-about .role-grid__item,
  .page-about .ecosystem__node {
    transition: none;
  }
}
</｜｜DSML｜｜ parameter>
</invoke>
</result>