.page-about {
  background: var(--night);
  color: var(--ink);
  overflow-x: hidden;
}

.page-about .about-hero {
  padding-top: calc(var(--header-h) + 44px);
  padding-bottom: 40px;
}

.page-about .about-hero__grid {
  display: grid;
  gap: 32px;
  margin-top: 28px;
}

.page-about .about-hero__lead h1 {
  margin: 14px 0 20px;
  max-width: 15ch;
}

.page-about .about-hero__lead .lede {
  margin: 0 0 18px;
  max-width: 60ch;
}

.page-about .about-hero__note {
  margin: 0 0 24px;
  font-size: 13px;
  line-height: 1.8;
  color: var(--muted);
  padding-left: 14px;
  border-left: 1px solid rgba(201, 162, 39, 0.5);
  max-width: 52ch;
}

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

.page-about .about-hero__panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(165deg, rgba(29, 33, 39, 0.92), rgba(11, 13, 16, 0.55));
  box-shadow: inset 0 1px 0 rgba(237, 234, 227, 0.04);
  padding: 20px 18px;
}

.page-about .about-hero__panel-title {
  margin: 0 0 6px;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--gold);
}

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

.page-about .about-facts__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 11px 0;
  border-bottom: 1px solid var(--line);
}

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

.page-about .about-facts dt {
  font-size: 13px;
  color: var(--muted);
}

.page-about .about-facts dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 15px;
  font-variant-numeric: tabular-nums;
  color: var(--sand);
}

.page-about .about-facts dd .num {
  color: var(--cyan);
  font-size: 18px;
  margin-right: 2px;
}

/* ---------- 主线与数据 ---------- */

.page-about .about-origin__grid {
  display: grid;
  gap: 20px;
  margin-top: 32px;
}

.page-about .about-origin__main .cell__body p,
.page-about .about-origin__side .cell__body p {
  margin: 0 0 14px;
}

.page-about .about-origin__main .cell__body p:last-child,
.page-about .about-origin__side .cell__body p:last-child {
  margin-bottom: 0;
}

/* ---------- 时间轴 ---------- */

.page-about .about-history__intro {
  display: grid;
  gap: 24px;
  margin-top: 32px;
}

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

.page-about .about-history__figure .media__frame {
  aspect-ratio: 1 / 1;
}

.page-about .about-history__figure img,
.page-about .about-team__media img,
.page-about .about-region__figure img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-about .about-history__intro-text p {
  margin: 0 0 14px;
  color: var(--muted);
  line-height: 1.8;
}

.page-about .about-history__intro-text p:first-child {
  color: var(--ink);
  font-size: 17px;
}

.page-about .about-history__intro-text p:last-child {
  margin-bottom: 0;
}

.page-about .about-spine {
  position: relative;
  margin-top: 40px;
  padding-left: 34px;
}

.page-about .about-spine::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 4px;
  bottom: 4px;
  width: 1px;
  background: linear-gradient(
    180deg,
    rgba(201, 162, 39, 0) 0%,
    rgba(201, 162, 39, 0.7) 5%,
    rgba(201, 162, 39, 0.3) 55%,
    rgba(99, 245, 210, 0.55) 100%
  );
}

.page-about .about-node {
  position: relative;
  padding-bottom: 30px;
}

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

.page-about .about-node__mark {
  position: absolute;
  left: -34px;
  top: 8px;
  width: 19px;
  height: 19px;
  display: block;
}

.page-about .about-node__mark svg {
  display: block;
  width: 100%;
  height: 100%;
}

.page-about .about-node__ring {
  fill: var(--night);
  stroke: var(--line);
  stroke-width: 1;
}

.page-about .about-node__dot {
  fill: var(--gold);
}

.page-about .about-node__stage {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 10px;
}

.page-about .about-node__year {
  margin: 0;
  font-size: 19px;
  letter-spacing: 0.02em;
  color: var(--gold);
}

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

.page-about .about-node__card {
  transition: border-color var(--dur) var(--ease);
}

.page-about .about-node__card:hover {
  border-color: rgba(201, 162, 39, 0.45);
}

.page-about .about-node__card .cell__body p {
  margin: 0;
}

.page-about .about-bullets {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-about .about-bullets li {
  position: relative;
  padding-left: 15px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-about .about-bullets li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 7px;
  height: 1px;
  background: var(--cyan);
}

/* ---------- 团队 ---------- */

.page-about .about-team__grid {
  display: grid;
  gap: 24px;
  margin-top: 32px;
}

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

.page-about .about-team__media .media__frame {
  aspect-ratio: 3 / 2;
}

.page-about .about-team__cards {
  display: grid;
  gap: 16px;
}

.page-about .about-team__cards .cell__body p {
  margin: 0;
}

.page-about .about-team__backstage {
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  padding: 16px 18px;
  background: rgba(20, 23, 28, 0.6);
}

.page-about .about-team__backstage-title {
  margin: 0 0 8px;
  font-size: 14px;
  color: var(--gold);
  letter-spacing: 0.06em;
}

.page-about .about-team__backstage p:last-child {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 区域 ---------- */

.page-about .about-region__grid {
  display: grid;
  gap: 28px;
  margin-top: 32px;
}

.page-about .about-region__map {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: radial-gradient(120% 100% at 50% 40%, rgba(29, 33, 39, 0.85), rgba(11, 13, 16, 0.7));
  padding: 10px;
}

.page-about .about-region__map svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-about .about-ring {
  fill: none;
  stroke: var(--line);
  stroke-width: 1;
}

.page-about .about-ring--outer {
  stroke-dasharray: 3 7;
  opacity: 0.65;
}

.page-about .about-spoke {
  stroke: var(--line);
  stroke-width: 1;
  opacity: 0.75;
}

.page-about .about-hub {
  fill: var(--slate);
  stroke: var(--gold);
  stroke-width: 1.2;
}

.page-about .about-pin {
  fill: var(--gold);
}

.page-about .about-pin--core {
  fill: var(--cyan);
}

.page-about .about-pin-label {
  fill: var(--muted);
  font-family: var(--font-body);
  font-size: 15px;
  letter-spacing: 0.04em;
}

.page-about .about-pin-label--core {
  fill: var(--sand);
}

.page-about .about-region__lead {
  margin: 0 0 18px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink);
}

.page-about .about-region__items {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.page-about .about-region__items li {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 11px 13px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(29, 33, 39, 0.55);
  font-size: 14px;
  color: var(--ink);
}

.page-about .about-region__items li::before {
  content: "";
  flex: none;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gold);
}

.page-about .about-region__figure {
  margin: 36px 0 0;
}

.page-about .about-region__figure .media__frame {
  aspect-ratio: 16 / 9;
}

/* ---------- 合作生态 ---------- */

.page-about .about-partners__grid {
  display: grid;
  gap: 20px;
  margin-top: 32px;
}

.page-about .about-partners__grid .cell__body p {
  margin: 0;
}

/* ---------- 方案分级 ---------- */

.page-about .about-plans__grid {
  display: grid;
  gap: 18px;
  margin-top: 32px;
}

.page-about .about-plan .cell__body p {
  margin: 0;
  font-size: 14px;
  color: var(--muted);
}

.page-about .about-plan--focus {
  border-color: rgba(99, 245, 210, 0.35);
  background: linear-gradient(180deg, rgba(99, 245, 210, 0.05), rgba(29, 33, 39, 0.9));
}

.page-about .about-plan__list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-about .about-plan__list li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink);
}

.page-about .about-plan__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 8px;
  height: 1px;
  background: var(--gold);
}

/* ---------- 收束 ---------- */

.page-about .about-close {
  padding-bottom: 76px;
}

.page-about .about-close__inner {
  border-top: 1px solid var(--line);
  padding-top: 40px;
}

.page-about .about-close__inner h2 {
  margin: 0 0 16px;
  max-width: 22ch;
}

.page-about .about-close__text {
  margin: 0 0 24px;
  max-width: 62ch;
  color: var(--muted);
  line-height: 1.85;
}

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

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-about .about-region__items {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

@media (min-width: 880px) {
  .page-about .about-hero {
    padding-top: calc(var(--header-h) + 64px);
    padding-bottom: 56px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(280px, 4fr);
    gap: 56px;
    align-items: start;
    margin-top: 40px;
  }

  .page-about .about-history__intro {
    grid-template-columns: 240px minmax(0, 1fr);
    gap: 44px;
    align-items: end;
  }

  .page-about .about-spine {
    padding-left: 60px;
    margin-top: 52px;
  }

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

  .page-about .about-node {
    display: grid;
    grid-template-columns: 200px minmax(0, 1fr);
    gap: 32px;
    align-items: start;
    padding-bottom: 44px;
  }

  .page-about .about-node__mark {
    left: -60px;
    top: 6px;
  }

  .page-about .about-node__stage {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    margin-bottom: 0;
    padding-top: 2px;
  }

  .page-about .about-node__year {
    font-size: 22px;
  }
}

@media (min-width: 900px) {
  .page-about .about-origin__grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    gap: 24px;
    align-items: stretch;
  }

  .page-about .about-region__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 48px;
    align-items: center;
  }

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

@media (min-width: 960px) {
  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    gap: 44px;
    align-items: start;
  }
}

@media (min-width: 1080px) {
  .page-about .about-plans__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

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