.page-about {
  --about-rule: 1px solid var(--line);
  --about-gap: clamp(28px, 4.5vw, 64px);
  background: var(--ink);
  color: var(--text);
}

.page-about .section {
  position: relative;
  padding-block: clamp(48px, 7vw, 96px);
}

/* ── 区块标题 ── */
.page-about .about-head {
  display: grid;
  gap: 10px;
  margin: 0 0 clamp(28px, 4vw, 48px);
  padding-bottom: 20px;
  border-bottom: var(--about-rule);
}

.page-about .about-head__index {
  font-size: 13px;
  letter-spacing: .24em;
  color: var(--red-bright);
}

.page-about .about-head h2 {
  margin: 0 0 12px;
  font-size: clamp(26px, 4.4vw, 46px);
  line-height: 1.06;
  letter-spacing: -.015em;
  font-weight: 900;
  color: var(--white);
}

.page-about .about-head p {
  margin: 0;
  max-width: 64ch;
  font-size: 16px;
  line-height: 1.75;
}

@media (min-width: 800px) {
  .page-about .about-head {
    grid-template-columns: 88px minmax(0, 1fr);
    gap: 30px;
    align-items: start;
  }
}

/* ── 首屏 ── */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(34px, 6vw, 72px) 0 clamp(48px, 8vw, 104px);
  border-bottom: var(--about-rule);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(90deg, rgba(38, 38, 51, .55) 0 1px, transparent 1px 88px),
    repeating-linear-gradient(0deg, rgba(38, 38, 51, .35) 0 1px, transparent 1px 88px);
  pointer-events: none;
  z-index: 0;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  top: -30%;
  right: -18%;
  width: 62%;
  height: 165%;
  background: linear-gradient(158deg, rgba(200, 23, 36, .26), rgba(200, 23, 36, 0) 62%);
  transform: rotate(-6deg);
  pointer-events: none;
  z-index: 0;
}

.page-about .about-hero .wrap {
  position: relative;
  z-index: 1;
}

.page-about .about-hero .breadcrumb {
  margin-bottom: clamp(24px, 4vw, 46px);
}

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(30px, 5vw, 56px);
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 1fr);
    gap: clamp(36px, 5vw, 76px);
    align-items: end;
  }
}

.page-about .about-hero__claim h1 {
  margin: 18px 0 0;
  font-size: clamp(34px, 7.4vw, 74px);
  line-height: .97;
  letter-spacing: -.025em;
  font-weight: 900;
  color: var(--white);
}

.page-about .about-hero__claim .lede {
  margin: 20px 0 0;
  max-width: 52ch;
  font-size: 16.5px;
  line-height: 1.78;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-about .about-hero__claim .load-badge {
  display: inline-block;
  margin-top: 22px;
}

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: var(--about-rule);
}

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

.page-about .stat-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 22px 20px 24px;
  background: var(--iron);
  transition: background .2s var(--ease);
}

.page-about .stat-card::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 30px;
  height: 4px;
  background: var(--yellow);
}

.page-about .stat-card:hover {
  background: #1b1b25;
}

.page-about .stat-card__key {
  font-size: 11.5px;
  letter-spacing: .2em;
  color: var(--text);
}

.page-about .stat-card__num {
  font-family: var(--f-mono);
  font-size: clamp(40px, 7.6vw, 58px);
  line-height: 1;
  letter-spacing: -.04em;
  color: var(--cyan);
}

.page-about .stat-card__unit {
  font-size: 13px;
  color: var(--white);
}

.page-about .stat-card p {
  margin: 6px 0 0;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--text);
}

/* ── 时间线 ── */
.page-about .about-history__grid {
  display: grid;
  gap: 0;
  align-items: start;
}

@media (min-width: 900px) {
  .page-about .about-history__grid {
    grid-template-columns: 118px minmax(0, 1fr);
    gap: 0 clamp(28px, 4vw, 56px);
  }
}

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

@media (min-width: 900px) {
  .page-about .history-axis {
    display: block;
    position: sticky;
    top: 108px;
    align-self: start;
    padding-right: 22px;
    border-right: 2px solid var(--red);
  }
}

.page-about .history-axis__list {
  display: flex;
  flex-direction: column;
  gap: 38px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .history-axis__item {
  display: flex;
  align-items: center;
  gap: 10px;
}

.page-about .history-axis__dot {
  width: 7px;
  height: 7px;
  background: var(--cyan);
  transform: rotate(45deg);
  flex: none;
}

.page-about .history-axis__year {
  font-size: 12.5px;
  letter-spacing: .18em;
  color: var(--white);
}

.page-about .history-stages {
  margin: 0;
  padding: 0 0 0 22px;
  list-style: none;
  border-left: 2px solid var(--red);
}

@media (min-width: 900px) {
  .page-about .history-stages {
    padding-left: 0;
    border-left: 0;
  }
}

.page-about .history-stage {
  position: relative;
  padding: 26px 0 28px;
  border-top: var(--about-rule);
  transition: background .2s var(--ease);
}

.page-about .history-stage:first-child {
  border-top: 0;
  padding-top: 4px;
}

.page-about .history-stage::before {
  content: "";
  position: absolute;
  left: -29px;
  top: 32px;
  width: 10px;
  height: 10px;
  background: var(--red);
  transform: rotate(45deg);
}

.page-about .history-stage:first-child::before {
  top: 10px;
}

@media (min-width: 900px) {
  .page-about .history-stage::before {
    display: none;
  }
  .page-about .history-stage {
    padding: 26px 22px 28px;
    margin-left: -22px;
  }
  .page-about .history-stage:hover {
    background: rgba(21, 21, 29, .85);
  }
}

.page-about .history-stage__year {
  display: block;
  font-size: 12.5px;
  letter-spacing: .2em;
  color: var(--red-bright);
  margin-bottom: 10px;
}

.page-about .history-stage h3 {
  margin: 0 0 10px;
  font-size: clamp(19px, 2.6vw, 25px);
  line-height: 1.25;
  color: var(--white);
  font-weight: 800;
}

.page-about .history-stage p {
  margin: 0;
  max-width: 68ch;
  font-size: 15.5px;
  line-height: 1.78;
}

/* ── 团队 ── */
.page-about .about-team__media {
  margin: 0 0 clamp(28px, 4vw, 46px);
}

.page-about .about-team__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: var(--about-rule);
}

@media (min-width: 720px) {
  .page-about .about-team__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1100px) {
  .page-about .about-team__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-about .team-role {
  position: relative;
  padding: clamp(20px, 3vw, 28px);
  background: var(--iron);
  transition: background .2s var(--ease);
}

.page-about .team-role:hover {
  background: #1b1b25;
}

.page-about .team-role__index {
  display: block;
  margin-bottom: 14px;
  font-size: 11.5px;
  letter-spacing: .2em;
  color: var(--red-bright);
  padding-bottom: 10px;
  border-bottom: 2px solid var(--red);
}

.page-about .team-role h3 {
  margin: 0 0 10px;
  font-size: 19px;
  line-height: 1.3;
  color: var(--white);
}

.page-about .team-role p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
}

.page-about .about-team__foot {
  display: grid;
  gap: 14px;
  margin-top: clamp(24px, 4vw, 40px);
  padding: 24px clamp(20px, 3vw, 34px);
  border: var(--about-rule);
  border-left: 4px solid var(--cyan);
  background: linear-gradient(90deg, rgba(47, 227, 214, .08), rgba(47, 227, 214, 0) 72%);
}

@media (min-width: 720px) {
  .page-about .about-team__foot {
    grid-template-columns: auto minmax(0, 1fr);
    align-items: center;
    gap: 32px;
  }
}

.page-about .about-team__num {
  font-family: var(--f-mono);
  font-size: clamp(48px, 8vw, 78px);
  line-height: .9;
  letter-spacing: -.05em;
  color: var(--cyan);
}

.page-about .about-team__foot p {
  margin: 0;
  max-width: 60ch;
  font-size: 15.5px;
  line-height: 1.78;
}

/* ── 合作生态 ── */
.page-about .about-ecosystem__grid {
  display: grid;
  gap: clamp(28px, 4vw, 54px);
}

@media (min-width: 900px) {
  .page-about .about-ecosystem__grid {
    grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr);
    align-items: start;
  }
}

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

@media (min-width: 900px) {
  .page-about .about-ecosystem__media {
    position: sticky;
    top: 108px;
  }
}

.page-about .about-head--stacked {
  margin-bottom: clamp(22px, 3vw, 34px);
}

.page-about .eco-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: 0 0 clamp(26px, 3.5vw, 40px);
  padding: 0;
  list-style: none;
  background: var(--line);
  border: var(--about-rule);
}

@media (min-width: 620px) {
  .page-about .eco-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-about .eco-list li {
  padding: 20px 18px 22px;
  background: var(--iron);
}

.page-about .eco-list__key {
  display: block;
  margin-bottom: 10px;
  padding-bottom: 8px;
  font-size: 11.5px;
  letter-spacing: .14em;
  color: var(--cyan);
  border-bottom: var(--about-rule);
}

.page-about .eco-list li p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
}

.page-about .eco-map__wrap {
  padding: clamp(18px, 2.6vw, 26px);
  border: var(--about-rule);
  background:
    radial-gradient(120% 90% at 22% 60%, rgba(200, 23, 36, .12), rgba(10, 10, 14, 0) 60%),
    var(--ink);
}

.page-about .eco-map {
  display: block;
  width: 100%;
  height: auto;
}

.page-about .eco-map__dots circle {
  fill: var(--line);
  transition: fill .18s var(--ease), r .18s var(--ease);
}

.page-about .eco-map__dots circle:hover {
  fill: var(--cyan);
}

.page-about .eco-map__hub-ring {
  fill: none;
  stroke: rgba(255, 210, 63, .4);
  stroke-width: 1.2;
}

.page-about .eco-map__hub {
  fill: var(--yellow);
}

.page-about .eco-map__label {
  fill: var(--yellow);
  font-size: 10px;
  letter-spacing: .16em;
  text-anchor: middle;
}

.page-about .eco-map__note {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.65;
  color: var(--text);
}

/* ── 节点网络 ── */
.page-about .about-network__grid {
  display: grid;
  gap: clamp(24px, 3.4vw, 40px);
}

@media (min-width: 900px) {
  .page-about .about-network__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
    align-items: start;
  }
}

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

.page-about .about-network__nodes {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: var(--about-rule);
}

.page-about .node-card {
  position: relative;
  padding: 22px 20px 24px;
  background: var(--iron);
  transition: transform .2s var(--ease), background .2s var(--ease);
}

.page-about .node-card:hover {
  background: #1b1b25;
  transform: translateY(-3px);
}

.page-about .node-card--main {
  background: linear-gradient(135deg, rgba(200, 23, 36, .22), var(--iron) 62%);
  border-left: 3px solid var(--red);
}

.page-about .node-card__tag {
  display: inline-block;
  margin-bottom: 12px;
}

.page-about .node-card h3 {
  margin: 0 0 8px;
  font-family: var(--f-mono);
  font-size: 24px;
  letter-spacing: .04em;
  color: var(--white);
}

.page-about .node-card p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.74;
}

.page-about .about-network__foot {
  margin: clamp(24px, 3.4vw, 38px) 0 0;
  padding-left: 18px;
  border-left: 2px solid var(--cyan);
  max-width: 72ch;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--white);
}

/* ── 长期承诺 ── */
.page-about .about-trust__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: var(--about-rule);
}

@media (min-width: 720px) {
  .page-about .about-trust__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1100px) {
  .page-about .about-trust__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-about .trust-item {
  position: relative;
  padding: 24px 22px 26px;
  background: var(--iron);
}

.page-about .trust-item__key {
  display: block;
  margin-bottom: 14px;
  font-size: 11.5px;
  letter-spacing: .2em;
  color: var(--red-bright);
}

.page-about .trust-item__val {
  margin: 0 0 10px;
  font-family: var(--f-mono);
  font-size: 24px;
  line-height: 1.15;
  letter-spacing: -.01em;
  color: var(--white);
  word-break: break-word;
}

.page-about .trust-item__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
}

.page-about .about-trust__contact {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  margin-top: clamp(26px, 3.6vw, 40px);
  padding: clamp(22px, 3vw, 32px);
  border: var(--about-rule);
  border-top: 3px solid var(--red);
  background: var(--ink);
}

@media (min-width: 800px) {
  .page-about .about-trust__contact {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 28px;
  }
}

.page-about .trust-contact__key {
  display: block;
  margin-bottom: 8px;
  font-size: 11.5px;
  letter-spacing: .18em;
  color: var(--yellow);
}

.page-about .trust-contact__block p {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--white);
  word-break: break-word;
}

.page-about .about-trust__tail {
  margin: clamp(22px, 3vw, 34px) 0 0;
  max-width: 78ch;
  font-size: 15.5px;
  line-height: 1.85;
}

.page-about .about-trust__tail a {
  color: var(--cyan);
}
<<<END>>>