.page-about {
  --about-sticky: calc(var(--header-h-sm) + 30px);
  background: var(--ink);
  color: var(--paper);
  overflow-x: hidden;
}

/* 面包屑 */
.page-about .about-crumbs {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 30px;
  font-size: 13px;
  letter-spacing: 0.02em;
}
.page-about .about-crumbs__link {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.page-about .about-crumbs__link:hover {
  color: var(--mint);
  border-bottom-color: var(--mint);
}
.page-about .about-crumbs__sep {
  color: var(--venue);
}
.page-about .about-crumbs__current {
  color: var(--paper);
}

/* 首屏 */
.page-about .about-hero {
  position: relative;
  isolation: isolate;
  padding: calc(var(--header-h) + 44px) 0 56px;
}
.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: -30% -12% auto -12%;
  height: 150%;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(58% 52% at 78% 6%, rgba(43, 232, 176, 0.16), transparent 70%),
    radial-gradient(46% 46% at 6% 28%, rgba(255, 138, 61, 0.12), transparent 72%);
}
.page-about .about-hero__grid {
  display: grid;
  gap: 32px;
}
.page-about .about-hero h1 {
  margin: 16px 0 0;
  font-size: clamp(34px, 6vw, 66px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  font-weight: 800;
}
.page-about .about-hero h1 em {
  display: block;
  font-style: normal;
  color: var(--mint);
}
.page-about .about-hero .lede {
  margin: 0;
  color: var(--mist);
  font-size: 15.5px;
  line-height: 1.85;
  max-width: 36em;
}
.page-about .about-facts {
  margin: 26px 0 0;
  border-top: 1px solid var(--line);
}
.page-about .about-facts__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}
.page-about .about-facts dt {
  margin: 0;
  font-size: 13px;
  color: var(--mist);
}
.page-about .about-facts dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 21px;
  line-height: 1.1;
  color: var(--paper);
  letter-spacing: -0.01em;
}
.page-about .about-facts dd small {
  font-family: var(--font-sans);
  font-size: 12px;
  color: var(--mist);
  margin-left: 2px;
}
.page-about .about-facts__ver {
  color: var(--orange);
}

/* 区块通用 */
.page-about .section {
  padding-top: 62px;
  padding-bottom: 62px;
}
.page-about .about-kicker {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mint);
}
.page-about .section__title {
  margin: 0;
  font-size: clamp(26px, 4.6vw, 40px);
  line-height: 1.16;
  letter-spacing: -0.015em;
  color: var(--paper);
}

/* 起点 */
.page-about .about-origin__grid {
  display: grid;
  gap: 26px;
}
.page-about .about-origin__main p {
  margin: 0 0 18px;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.85;
}
.page-about .about-origin__main p:first-child {
  color: var(--paper);
  font-size: 17.5px;
  line-height: 1.7;
}
.page-about .about-origin__main p:last-child {
  margin-bottom: 0;
}

/* 规模数据带 */
.page-about .about-scale {
  padding-top: 56px;
  padding-bottom: 56px;
}
.page-about .about-scale__inner {
  display: grid;
  gap: 32px;
}
.page-about .about-scale__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: 28px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
}
.page-about .about-scale__cell {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 24px 20px 22px;
  background: var(--panel);
}
.page-about .about-scale__num {
  font-family: var(--font-mono);
  font-size: clamp(28px, 5vw, 40px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--paper);
}
.page-about .about-scale__unit {
  font-size: 0.5em;
  color: var(--mint);
  margin-left: 3px;
}
.page-about .about-scale__label {
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--mist);
}
.page-about .about-scale__figure {
  margin: 0;
}
.page-about .about-scale__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--r-lg);
  border: 1px solid var(--line);
  background: var(--ink-deep);
}
.page-about .about-scale__figure figcaption {
  margin-top: 12px;
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--mist);
}

/* 内容生产 */
.page-about .about-flow__grid {
  display: grid;
  gap: 34px;
}
.page-about .about-flow__note {
  margin: 18px 0 0;
  color: var(--mist);
  font-size: 14.5px;
  line-height: 1.8;
}
.page-about .about-flow__ring {
  position: relative;
  width: min(200px, 60vw);
  aspect-ratio: 1;
  margin: 0 auto 30px;
  border-radius: 50%;
  background: conic-gradient(
    var(--mint) 0deg 90deg,
    var(--mint-deep) 90deg 180deg,
    var(--orange) 180deg 270deg,
    var(--venue) 270deg 360deg
  );
  box-shadow: 0 0 46px rgba(43, 232, 176, 0.16);
}
.page-about .about-flow__ring::after {
  content: "";
  position: absolute;
  inset: 26%;
  border-radius: 50%;
  background: var(--ink-deep);
  box-shadow: inset 0 0 0 1px var(--line);
}
.page-about .about-flow__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: about-step;
  display: grid;
  gap: 20px;
}
.page-about .about-flow__steps li {
  position: relative;
  padding-left: 40px;
}
.page-about .about-flow__steps li::before {
  counter-increment: about-step;
  content: counter(about-step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--mint);
  border-left: 1px solid var(--line);
  padding-left: 8px;
}
.page-about .about-flow__step-title {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0 0 6px;
  font-size: 15.5px;
  font-weight: 600;
  color: var(--paper);
}
.page-about .about-flow__time {
  font-size: 11px;
  letter-spacing: 0.05em;
  color: var(--orange-soft);
  border: 1px solid rgba(255, 194, 154, 0.34);
  border-radius: var(--r-pill);
  padding: 1px 9px;
}
.page-about .about-flow__steps p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}

/* 团队 */
.page-about .about-team__media {
  margin: 0 0 34px;
  border-radius: var(--r-xl);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--ink-deep);
}
.page-about .about-team__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 16 / 7;
  object-fit: cover;
}
.page-about .about-team__media figcaption {
  padding: 14px 20px 16px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--mist);
  border-top: 1px solid var(--line);
}
.page-about .about-team__grid {
  display: grid;
  gap: 24px;
}
.page-about .about-team__body p {
  margin: 0 0 16px;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.85;
}
.page-about .about-team__list {
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
  display: grid;
  gap: 14px;
}
.page-about .about-team__list li {
  padding-left: 15px;
  border-left: 2px solid var(--mint-deep);
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}
.page-about .about-team__list strong {
  display: block;
  margin-bottom: 2px;
  font-size: 14.5px;
  color: var(--paper);
}
.page-about .about-team__note {
  margin: 0;
  padding: 16px 18px;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--orange-soft);
  background: rgba(255, 138, 61, 0.08);
  border: 1px solid rgba(255, 138, 61, 0.22);
  border-radius: var(--r-md);
}

/* 版本时间线 */
.page-about .about-tl__grid {
  display: grid;
  gap: 40px;
}
.page-about .about-tl__intro {
  margin: 18px 0 0;
  color: var(--mist);
  font-size: 14.5px;
  line-height: 1.8;
}
.page-about .about-tl__figure {
  margin: 26px 0 0;
}
.page-about .about-tl__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 2 / 1;
  object-fit: cover;
  border-radius: var(--r-lg);
  border: 1px solid var(--line);
  background: var(--ink-deep);
}
.page-about .about-tl__more {
  margin: 22px 0 0;
}
.page-about .about-tl {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-about .about-tl::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 12px;
  bottom: 14px;
  width: 1px;
  background: linear-gradient(180deg, var(--mint) 0%, var(--mint-deep) 38%, var(--line) 100%);
}
.page-about .about-tl__item {
  position: relative;
  box-sizing: border-box;
  padding: 0 0 34px 30px;
}
.page-about .about-tl__item:last-child {
  padding-bottom: 0;
}
.page-about .about-tl__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 11px;
  height: 11px;
  box-sizing: border-box;
  border-radius: 50%;
  background: var(--ink);
  border: 2px solid var(--mint);
}
.page-about .about-tl__item--now::before {
  left: -3px;
  top: 7px;
  width: 17px;
  height: 17px;
  border-color: var(--orange);
  background: var(--ink-deep);
  box-shadow: 0 0 0 5px rgba(255, 138, 61, 0.16);
}
.page-about .about-tl__year {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: clamp(25px, 4.4vw, 36px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--mint);
}
.page-about .about-tl__item--now .about-tl__year {
  color: var(--orange);
}
.page-about .about-tl__item h3 {
  margin: 0 0 6px;
  font-size: 16.5px;
  font-weight: 600;
  color: var(--paper);
}
.page-about .about-tl__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--mist);
}

/* 协作 */
.page-about .about-partners__head {
  margin-bottom: 34px;
}
.page-about .about-partners__grid {
  display: grid;
  gap: 20px;
}
.page-about .about-partners__card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 26px 22px 24px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.page-about .about-partners__no {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--orange);
}
.page-about .about-partners__card h3 {
  margin: 0;
  font-size: 16.5px;
  font-weight: 600;
  color: var(--paper);
}
.page-about .about-partners__card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--mist);
}
.page-about .about-partners__card:hover {
  border-color: var(--mint-deep);
  transform: translateY(-4px);
}

/* 结尾行动 */
.page-about .about-cta {
  padding-bottom: 96px;
}
.page-about .about-cta__inner {
  position: relative;
  overflow: hidden;
  display: grid;
  gap: 24px;
  padding: 36px 24px;
  border: 1px solid var(--line);
  border-radius: var(--r-xl);
  background: linear-gradient(145deg, var(--panel) 0%, var(--ink-deep) 100%);
}
.page-about .about-cta__inner::after {
  content: "";
  position: absolute;
  right: -70px;
  top: -90px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(43, 232, 176, 0.22), transparent 70%);
  pointer-events: none;
}
.page-about .about-cta__text h2 {
  margin: 0 0 10px;
  font-size: clamp(22px, 3.6vw, 30px);
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--paper);
}
.page-about .about-cta__text p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}
.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* 进场 */
.page-about [data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 520ms var(--ease), transform 520ms var(--ease);
}
.page-about [data-reveal].is-in {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .page-about [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .page-about .about-partners__card:hover {
    transform: none;
  }
}

/* 中屏及以上 */
@media (min-width: 760px) {
  .page-about .about-scale__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-about .about-flow__body {
    display: grid;
    grid-template-columns: 200px minmax(0, 1fr);
    gap: 36px;
    align-items: center;
  }
  .page-about .about-flow__ring {
    margin: 0;
  }
  .page-about .about-partners__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
  }
  .page-about .about-partners__card:nth-child(2) {
    transform: translateY(-16px);
  }
  .page-about .about-partners__card:nth-child(2):hover {
    transform: translateY(-20px);
  }
  .page-about .about-partners__card:nth-child(3) {
    transform: translateY(12px);
  }
  .page-about .about-partners__card:nth-child(3):hover {
    transform: translateY(8px);
  }
  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    padding: 44px 40px;
  }
}

/* 桌面端分栏 */
@media (min-width: 900px) {
  .page-about .about-hero {
    padding: calc(var(--header-h) + 62px) 0 76px;
  }
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
    gap: 56px;
  }
  .page-about .section {
    padding-top: 82px;
    padding-bottom: 82px;
  }
  .page-about .about-origin__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 60px;
    align-items: start;
  }
  .page-about .about-origin__aside {
    position: sticky;
    top: var(--about-sticky);
  }
  .page-about .about-scale__inner {
    grid-template-columns: minmax(0, 1.18fr) minmax(0, 1fr);
    gap: 50px;
    align-items: center;
  }
  .page-about .about-flow__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 58px;
    align-items: start;
  }
  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 56px;
    align-items: start;
  }
  .page-about .about-tl__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 64px;
    align-items: start;
  }
  .page-about .about-tl__aside {
    position: sticky;
    top: var(--about-sticky);
  }
  .page-about .about-tl__item {
    padding-bottom: 44px;
  }
  .page-about .about-tl__item p {
    font-size: 14.5px;
  }
}

@media (min-width: 1100px) {
  .page-about .about-hero h1 {
    max-width: 12em;
  }
  .page-about .about-facts dd {
    font-size: 23px;
  }
  .page-about .about-cta__inner {
    padding: 52px 52px;
  }
}
<<<END>>>