.page-about {
  --about-halo-a: rgba(122, 92, 245, .24);
  --about-halo-b: rgba(33, 230, 193, .14);
  --about-halo-c: rgba(242, 178, 60, .16);
}

/* ============ 面包屑留白 ============ */
.page-about .crumbs {
  padding: 1.25rem 0 .25rem;
}

/* ============ 首屏 ============ */
.page-about .about-hero {
  position: relative;
  padding: 1.25rem 0 3rem;
  overflow: hidden;
  background:
    radial-gradient(58% 52% at 16% 0%, var(--about-halo-a), transparent 64%),
    radial-gradient(42% 44% at 94% 8%, var(--about-halo-b), transparent 68%);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: 46%;
  bottom: -22rem;
  width: 46rem;
  height: 30rem;
  border: 1px solid var(--line);
  border-radius: 50%;
  transform: rotate(-9deg);
  opacity: .55;
  pointer-events: none;
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 2.25rem;
}

.page-about .about-hero__title {
  margin: .6rem 0 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(1.95rem, 7.2vw, 3.4rem);
  line-height: 1.14;
  letter-spacing: -.02em;
  color: var(--ink);
  max-width: 16em;
}

.page-about .about-hero__lede {
  margin: 1.15rem 0 0;
  max-width: 38em;
  color: var(--ink);
  font-size: 1.02rem;
  line-height: 1.8;
}

.page-about .about-hero__sub {
  margin: .85rem 0 0;
  max-width: 34em;
  color: var(--muted);
  font-size: .95rem;
  line-height: 1.8;
}

.page-about .about-hero__facts {
  list-style: none;
  margin: 1.9rem 0 0;
  padding: 1.25rem 0 0;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.1rem 1.25rem;
}

.page-about .about-hero__facts .stat {
  display: flex;
  flex-direction: column;
  gap: .3rem;
}

.page-about .about-hero__facts .stat__value {
  font-family: var(--font-mono);
  font-size: clamp(1.35rem, 5vw, 1.85rem);
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--gold);
  line-height: 1.1;
}

.page-about .about-hero__facts .stat__label {
  color: var(--muted);
  font-size: .82rem;
  letter-spacing: .02em;
}

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

.page-about .figure__frame img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--r-lg);
}

/* ============ 时间轴 ============ */
.page-about .about-timeline {
  padding-top: 3rem;
}

.page-about .about-timeline__rail {
  margin-top: 2.25rem;
}

.page-about .tl {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
  display: grid;
  gap: 1.35rem;
}

.page-about .tl::before {
  content: "";
  position: absolute;
  left: .3rem;
  top: .7rem;
  bottom: .7rem;
  width: 1px;
  background: linear-gradient(180deg, var(--violet), rgba(33, 230, 193, .45) 60%, transparent);
}

.page-about .tl__item {
  position: relative;
  padding-left: 1.75rem;
}

.page-about .tl__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: .8rem;
  width: .62rem;
  height: .62rem;
  border-radius: 50%;
  background: var(--violet);
  box-shadow: 0 0 0 4px rgba(122, 92, 245, .16);
}

.page-about .tl__year {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 6vw, 2.1rem);
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--gold);
  line-height: 1.1;
  margin-bottom: .5rem;
}

.page-about .tl__card {
  position: relative;
  background: var(--orbit);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 1.15rem 1.25rem 1.25rem;
  overflow: hidden;
  transition: transform 160ms var(--ease), border-color 160ms var(--ease);
}

.page-about .tl__card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: linear-gradient(90deg, var(--violet), var(--cyan) 68%, transparent);
  opacity: .85;
}

.page-about .tl__title {
  margin: 0;
  font-size: 1.06rem;
  font-weight: 700;
  color: var(--ink);
  line-height: 1.5;
}

.page-about .tl__text {
  margin: .6rem 0 0;
  color: var(--muted);
  font-size: .93rem;
  line-height: 1.78;
}

.page-about .tl__note {
  margin: .85rem 0 0;
  padding-left: .85rem;
  border-left: 2px solid var(--line);
  color: var(--muted);
  font-size: .85rem;
  line-height: 1.7;
  transition: color 160ms var(--ease), border-color 160ms var(--ease), transform 160ms var(--ease);
}

.page-about .tl__item:hover .tl__card {
  transform: translateX(4px);
  border-color: rgba(122, 92, 245, .55);
}

.page-about .tl__item:hover .tl__note {
  color: var(--cyan);
  border-color: var(--cyan);
  transform: translateX(3px);
}

.page-about .about-timeline__foot {
  margin: 2rem 0 0;
  padding-top: 1rem;
  border-top: 1px dashed var(--line);
  color: var(--muted);
  font-size: .8rem;
  letter-spacing: .02em;
}

/* ============ 团队 ============ */
.page-about .about-team {
  padding-top: 3.25rem;
}

.page-about .about-team__inner {
  display: grid;
  gap: 2.25rem;
}

.page-about .about-team__figure {
  margin: 1.75rem 0 0;
}

.page-about .about-team__cards {
  display: flex;
  flex-direction: column;
  gap: .85rem;
}

.page-about .role {
  background: var(--orbit);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
  transition: border-color 160ms var(--ease);
}

.page-about .role[open] {
  border-color: rgba(122, 92, 245, .5);
}

.page-about .role > summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  gap: .75rem;
  padding: 1rem 1.15rem;
  font-weight: 700;
  color: var(--ink);
  font-size: 1rem;
  line-height: 1.5;
}

.page-about .role > summary::-webkit-details-marker {
  display: none;
}

.page-about .role > summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 400;
  color: var(--cyan);
  transition: transform 160ms var(--ease);
}

.page-about .role[open] > summary::after {
  transform: rotate(45deg);
}

.page-about .role > summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -3px;
}

.page-about .role__body {
  padding: 0 1.15rem 1.15rem;
  border-top: 1px solid var(--line);
  margin-top: 0;
}

.page-about .role__body p {
  margin: .85rem 0 0;
  color: var(--muted);
  font-size: .92rem;
  line-height: 1.78;
}

/* ============ 核实流程 ============ */
.page-about .about-verify {
  padding-top: 3rem;
}

.page-about .about-verify__body {
  margin-top: 2rem;
}

.page-about .steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.page-about .step {
  position: relative;
  background: var(--orbit);
  border: 1px solid var(--line);
  border-left: 3px solid var(--violet);
  border-radius: var(--r-md);
  padding: 1.2rem 1.25rem 1.3rem;
}

.page-about .step:nth-child(2) {
  border-left-color: var(--cyan);
}

.page-about .step:nth-child(3) {
  border-left-color: var(--gold);
}

.page-about .step__num {
  display: block;
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .12em;
  color: var(--muted);
}

.page-about .step__title {
  margin: .5rem 0 0;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--ink);
}

.page-about .step__text {
  margin: .55rem 0 0;
  color: var(--muted);
  font-size: .92rem;
  line-height: 1.78;
}

.page-about .about-verify__figure {
  margin: 1.5rem 0 0;
}

/* ============ 品牌表达 ============ */
.page-about .about-motto {
  padding-top: 3rem;
}

.page-about .visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.page-about .about-motto__quote {
  position: relative;
  margin: 1.25rem 0 0;
  padding: 1.25rem 0 .5rem;
  border-top: 1px solid var(--line);
}

.page-about .about-motto__mark {
  display: block;
  font-family: var(--font-head);
  font-size: clamp(3.4rem, 12vw, 6.5rem);
  font-weight: 900;
  line-height: .68;
  color: var(--violet);
  opacity: .55;
}

.page-about .about-motto__line {
  margin: .35rem 0 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(2.1rem, 9vw, 4.2rem);
  line-height: 1.08;
  letter-spacing: -.02em;
  color: var(--ink);
  text-shadow: 0 0 32px rgba(33, 230, 193, .22);
}

.page-about .about-motto__body {
  margin-top: 1.5rem;
  display: grid;
  gap: 1.75rem;
}

.page-about .about-motto__lead {
  margin: 0;
  max-width: 38em;
  color: var(--ink);
  font-size: .99rem;
  line-height: 1.85;
}

.page-about .usecases {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.page-about .usecase {
  padding: 1rem 1.15rem;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: linear-gradient(160deg, rgba(20, 26, 56, .92), rgba(11, 16, 36, .92));
}

.page-about .usecase__title {
  margin: 0;
  font-size: .98rem;
  font-weight: 700;
  color: var(--cyan);
}

.page-about .usecase__text {
  margin: .5rem 0 0;
  color: var(--muted);
  font-size: .9rem;
  line-height: 1.75;
}

/* ============ 协作 ============ */
.page-about .about-partners {
  padding-top: 3rem;
}

.page-about .partners {
  margin-top: 1.9rem;
}

.page-about .partners__card {
  display: flex;
  flex-direction: column;
  gap: .6rem;
}

.page-about .partners__card .card__body {
  color: var(--muted);
  font-size: .92rem;
  line-height: 1.8;
}

.page-about .partners__link {
  align-self: flex-start;
  margin-top: .35rem;
}

/* ============ 下一步 ============ */
.page-about .about-next {
  padding: 2.5rem 0 3.5rem;
}

.page-about .about-next__inner {
  display: grid;
  gap: 1.75rem;
}

.page-about .about-next__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
}

/* ============ 桌面端 ============ */
@media (min-width: 640px) {
  .page-about .about-hero__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

@media (min-width: 900px) {
  .page-about .about-hero {
    padding: 2rem 0 4.5rem;
  }

  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.02fr);
    gap: 3.5rem;
    align-items: start;
  }

  .page-about .about-hero__media {
    margin-top: 1.75rem;
  }

  .page-about .tl::before {
    left: 7rem;
    top: .9rem;
    bottom: 1.5rem;
  }

  .page-about .tl {
    gap: 1.5rem;
  }

  .page-about .tl__item {
    display: grid;
    grid-template-columns: 6rem minmax(0, 1fr);
    gap: 2rem;
    padding-left: 0;
    margin-left: calc(var(--tl-step, 0) * 1.6rem);
  }

  .page-about .tl__item::before {
    display: none;
  }

  .page-about .tl__item:nth-child(1) { --tl-step: 0; }
  .page-about .tl__item:nth-child(2) { --tl-step: 1; }
  .page-about .tl__item:nth-child(3) { --tl-step: 2; }
  .page-about .tl__item:nth-child(4) { --tl-step: 3; }

  .page-about .tl__year {
    margin-bottom: 0;
    padding-top: .15rem;
    text-align: right;
  }

  .page-about .about-team__inner {
    grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr);
    gap: 3.25rem;
    align-items: start;
  }

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

  .page-about .about-verify__body {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 1.75rem;
  }

  .page-about .about-motto__body {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    gap: 2.75rem;
    align-items: start;
  }

  .page-about .about-next__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
    gap: 2.5rem;
  }

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

@media (min-width: 1200px) {
  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
    gap: 4.5rem;
  }

  .page-about .tl__item {
    grid-template-columns: 7rem minmax(0, 1fr);
    margin-left: calc(var(--tl-step, 0) * 2.1rem);
  }
}

/* ============ 动效降级 ============ */
@media (prefers-reduced-motion: reduce) {
  .page-about .tl__card,
  .page-about .tl__note,
  .page-about .role,
  .page-about .role > summary::after {
    transition: none;
  }

  .page-about .tl__item:hover .tl__card,
  .page-about .tl__item:hover .tl__note {
    transform: none;
  }
}
</｜｜DSML｜｜ parameter>
</invoke>
</result>