.page-about {
  --about-pad: clamp(56px, 7.2vw, 104px);
  --about-gap: clamp(32px, 5vw, 72px);
  --about-head-gap: clamp(18px, 2.4vw, 30px);
  color: var(--ink);
}

.page-about img {
  max-width: 100%;
  height: auto;
}

.page-about p {
  font-size: 16px;
  line-height: 1.78;
  color: var(--ink);
  margin: 0 0 18px;
}

.page-about .lede {
  font-size: clamp(17px, 1.4vw, 19px);
  line-height: 1.7;
}

.page-about .section {
  padding-top: var(--about-pad);
  padding-bottom: var(--about-pad);
  border-top: 1px solid var(--line);
}

.page-about .about-idx {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 var(--about-head-gap);
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--grid);
}

.page-about .about-idx::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--kiwi);
  flex: none;
}

.page-about .about-h2 {
  font-size: clamp(25px, 3.4vw, 42px);
  line-height: 1.15;
  letter-spacing: -0.02em;
  font-weight: 500;
  margin: 0 0 24px;
  color: var(--ink);
}

/* ---------- 面包屑 ---------- */
.page-about .breadcrumbs {
  padding-top: clamp(20px, 3vw, 34px);
  padding-bottom: 0;
}

.page-about .breadcrumbs__list {
  font-size: 12px;
  letter-spacing: 0.16em;
}

/* ---------- 序章 ---------- */
.page-about .about-overture {
  padding-top: clamp(28px, 4vw, 52px);
  padding-bottom: var(--about-pad);
  border-bottom: 1px solid var(--line);
}

.page-about .about-overture__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 36px;
}

.page-about .about-overture__title {
  font-size: clamp(38px, 8vw, 98px);
  line-height: 1.02;
  letter-spacing: -0.035em;
  font-weight: 300;
  margin: 0 0 26px;
  color: var(--ink);
  max-width: 14em;
}

.page-about .about-overture__mark {
  color: var(--kiwi);
  display: inline-block;
  position: relative;
}

.page-about .about-overture__mark::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0.06em;
  height: 2px;
  background: var(--lime);
  opacity: 0.7;
}

.page-about .about-overture__lede {
  max-width: 40em;
  margin-bottom: 20px;
}

.page-about .about-overture__note {
  font-size: 13px;
  line-height: 1.7;
  color: var(--grid);
  letter-spacing: 0.04em;
  margin: 0;
  padding-left: 14px;
  border-left: 2px solid var(--kiwi);
}

.page-about .about-facts {
  margin: 0;
  border-top: 1px solid var(--line-strong);
}

.page-about .about-facts__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
}

.page-about .about-facts__row dt {
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--grid);
}

.page-about .about-facts__row dd {
  margin: 0;
  font-family: var(--font-num);
  font-size: 15px;
  color: var(--ink);
  white-space: nowrap;
}

.page-about .about-overture__figure {
  margin: clamp(34px, 5vw, 68px) 0 0;
  padding: 0;
}

.page-about .about-overture__frame {
  overflow: hidden;
  border: 1px solid var(--line-strong);
  background: var(--graphite);
  aspect-ratio: 3 / 2;
}

.page-about .about-overture__frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-about .about-overture__caption {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 14px;
  margin-top: 14px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--grid);
}

/* ---------- 命名 ---------- */
.page-about .about-naming__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 36px;
}

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

.page-about .about-naming__swatch {
  position: relative;
  width: 100%;
  max-width: 400px;
  aspect-ratio: 1 / 1;
  border: 1px solid var(--line-strong);
  background-color: var(--kiwi);
  background-image:
    radial-gradient(circle at 22% 30%, var(--seed) 3.6px, transparent 4.2px),
    radial-gradient(circle at 48% 20%, var(--seed) 2.4px, transparent 3px),
    radial-gradient(circle at 72% 34%, var(--seed) 3.2px, transparent 3.8px),
    radial-gradient(circle at 34% 55%, var(--seed) 2.8px, transparent 3.4px),
    radial-gradient(circle at 62% 62%, var(--seed) 3.8px, transparent 4.4px),
    radial-gradient(circle at 84% 54%, var(--seed) 2.2px, transparent 2.8px),
    radial-gradient(circle at 26% 78%, var(--seed) 3.2px, transparent 3.8px),
    radial-gradient(circle at 56% 84%, var(--seed) 2.6px, transparent 3.2px),
    radial-gradient(circle at 78% 80%, var(--seed) 3.4px, transparent 4px);
}

.page-about .about-naming__swatch::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 56px 56px;
  pointer-events: none;
}

/* ---------- 团队 ---------- */
.page-about .about-team__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 34px;
  margin-top: clamp(28px, 4vw, 48px);
}

.page-about .about-team__stats {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line-strong);
  border: 1px solid var(--line-strong);
}

.page-about .about-team__stats li {
  background: var(--graphite);
  padding: 16px 16px 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-about .about-team__statNum {
  font-family: var(--font-num);
  font-size: 30px;
  line-height: 1;
  color: var(--kiwi);
  letter-spacing: -0.02em;
}

.page-about .about-team__statLabel {
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--ink);
  opacity: 0.72;
}

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

.page-about .about-team__frame {
  border: 1px solid var(--line);
  background: var(--graphite);
  overflow: hidden;
  aspect-ratio: 4 / 3;
}

.page-about .about-team__frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-about .about-team__caption {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
  margin-top: 14px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--grid);
}

/* ---------- 流程 ---------- */
.page-about .about-flow__lede {
  max-width: 44em;
  margin-bottom: clamp(28px, 4vw, 46px);
}

.page-about .about-flow__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-about .about-flow__step {
  position: relative;
  background: var(--graphite);
  border: 1px solid var(--line);
  padding: 22px 20px 18px;
  transition: border-color 180ms var(--ease), background 180ms var(--ease);
}

.page-about .about-flow__step:hover {
  border-color: var(--kiwi);
  background: var(--shadow-green);
}

.page-about .about-flow__num {
  font-family: var(--font-num);
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--kiwi);
}

.page-about .about-flow__name {
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 10px 0 12px;
  color: var(--ink);
}

.page-about .about-flow__desc {
  font-size: 14px;
  line-height: 1.72;
  margin: 0 0 18px;
  color: var(--ink);
  opacity: 0.78;
}

.page-about .about-flow__timing {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 6px 12px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.page-about .about-flow__role {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--grid);
}

.page-about .about-flow__dur {
  font-family: var(--font-num);
  font-size: 12.5px;
  color: var(--blue);
  white-space: nowrap;
  transition: color 180ms var(--ease);
}

.page-about .about-flow__step:hover .about-flow__dur {
  color: var(--lime);
}

/* ---------- 版本时间轴 ---------- */
.page-about .about-timeline__lede {
  max-width: 44em;
  margin-bottom: clamp(28px, 4vw, 44px);
}

.page-about .about-timeline__list {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0 0 0 34px;
}

.page-about .about-timeline__list::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 18px;
  bottom: 18px;
  width: 1px;
  background: var(--line-strong);
}

.page-about .about-timeline__item {
  position: relative;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: -34px;
  top: 18px;
  width: 11px;
  height: 11px;
  background: var(--kiwi);
}

.page-about .about-timeline__entry {
  border-bottom: 1px solid var(--line);
}

.page-about .about-timeline__summary {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding: 14px 0;
  cursor: pointer;
  list-style: none;
}

.page-about .about-timeline__summary::-webkit-details-marker {
  display: none;
}

.page-about .about-timeline__summary::marker {
  content: "";
}

.page-about .about-timeline__summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-num);
  font-size: 16px;
  line-height: 1;
  color: var(--grid);
  transition: color 160ms var(--ease);
}

.page-about .about-timeline__entry[open] .about-timeline__summary::after {
  content: "−";
  color: var(--kiwi);
}

.page-about .about-timeline__summary:hover .about-timeline__name {
  color: var(--kiwi);
}

.page-about .about-timeline__ver {
  font-family: var(--font-num);
  font-size: 15px;
  letter-spacing: 0.02em;
  color: var(--kiwi);
  flex: none;
  min-width: 52px;
}

.page-about .about-timeline__name {
  flex: 1;
  font-size: clamp(16px, 2vw, 21px);
  font-weight: 500;
  line-height: 1.4;
  color: var(--ink);
  transition: color 160ms var(--ease);
}

.page-about .about-timeline__desc {
  margin: 0 0 20px;
  padding: 0 0 0 68px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--ink);
  opacity: 0.78;
}

.page-about .about-timeline__figure {
  margin: clamp(34px, 5vw, 60px) 0 0;
}

.page-about .about-timeline__frame {
  border: 1px solid var(--line);
  background: var(--graphite);
  overflow: hidden;
  aspect-ratio: 2 / 1;
}

.page-about .about-timeline__frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-about .about-timeline__caption {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
  margin-top: 14px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--grid);
}

/* ---------- 专题 ---------- */
.page-about .about-report__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 34px;
  align-items: center;
}

.page-about .about-report__cover {
  position: relative;
  isolation: isolate;
  width: 100%;
  max-width: 300px;
  aspect-ratio: 3 / 4;
  border: 1px solid var(--line-strong);
  background: var(--graphite);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  overflow: hidden;
}

.page-about .about-report__cover::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 32%;
  background: var(--kiwi);
  z-index: -1;
}

.page-about .about-report__coverKicker {
  position: relative;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--grid);
}

.page-about .about-report__big {
  position: relative;
  font-family: var(--font-num);
  font-size: clamp(64px, 10vw, 104px);
  line-height: 0.82;
  letter-spacing: -0.05em;
  color: var(--lime);
}

.page-about .about-report__coverFoot {
  position: relative;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--seed);
}

.page-about .about-report__body > p {
  max-width: 44em;
}

.page-about .about-report__list {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  border-top: 1px solid var(--line-strong);
}

.page-about .about-report__list li {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 4px 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  align-items: baseline;
}

.page-about .about-report__issue {
  font-family: var(--font-num);
  font-size: 13px;
  color: var(--kiwi);
  letter-spacing: 0.08em;
}

.page-about .about-report__issueName {
  font-size: 16px;
  font-weight: 500;
  color: var(--ink);
}

.page-about .about-report__issueDesc {
  grid-column: 2;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--grid);
}

.page-about .about-report__cta {
  margin-top: 28px;
  display: inline-block;
}

/* ---------- 合作 ---------- */
.page-about .about-partners__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
  align-items: center;
  margin-top: clamp(24px, 3.6vw, 40px);
}

.page-about .about-partners__figure {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-about .about-partners__num {
  font-family: var(--font-num);
  font-size: clamp(72px, 12vw, 140px);
  line-height: 0.8;
  letter-spacing: -0.05em;
  color: var(--kiwi);
}

.page-about .about-partners__unit {
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--grid);
}

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

/* ---------- 收束 ---------- */
.page-about .about-end {
  border-top: 1px solid var(--line-strong);
}

.page-about .about-end__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
}

.page-about .about-end__title {
  font-size: clamp(23px, 3vw, 36px);
  line-height: 1.2;
  letter-spacing: -0.02em;
  font-weight: 500;
  margin: 0;
  color: var(--ink);
}

.page-about .about-end__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 18px;
}

.page-about .about-end__link {
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--blue);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 160ms var(--ease), color 160ms var(--ease);
}

.page-about .about-end__link:hover,
.page-about .about-end__link:focus-visible {
  color: var(--lime);
  border-bottom-color: var(--lime);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-about .about-flow__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }
}

@media (min-width: 900px) {
  .page-about .about-overture__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: var(--about-gap);
    align-items: end;
  }

  .page-about .about-overture__figure {
    margin-left: auto;
    width: min(100%, 980px);
  }

  .page-about .about-naming__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: var(--about-gap);
    align-items: start;
  }

  .page-about .about-naming__swatch {
    margin-left: auto;
  }

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    gap: var(--about-gap);
    align-items: start;
  }

  .page-about .about-team__figure {
    margin-top: 56px;
  }

  .page-about .about-flow__list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 22px;
  }

  .page-about .about-flow__step::after {
    content: "";
    position: absolute;
    top: 50%;
    right: -15px;
    transform: translateY(-50%);
    width: 0;
    height: 0;
    border-left: 8px solid var(--line-strong);
    border-top: 6px solid transparent;
    border-bottom: 6px solid transparent;
  }

  .page-about .about-flow__step:last-child::after {
    display: none;
  }

  .page-about .about-report__grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
    gap: var(--about-gap);
  }

  .page-about .about-partners__grid {
    grid-template-columns: minmax(0, 3fr) minmax(0, 8fr);
    gap: var(--about-gap);
  }

  .page-about .about-end__grid {
    grid-template-columns: minmax(0, 6fr) auto;
    align-items: center;
    gap: 40px;
  }

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

@media (max-width: 599px) {
  .page-about .about-timeline__desc {
    padding-left: 0;
  }

  .page-about .about-timeline__summary {
    gap: 12px;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-about .about-flow__step,
  .page-about .about-flow__dur,
  .page-about .about-timeline__summary::after,
  .page-about .about-timeline__name,
  .page-about .about-end__link {
    transition: none;
  }
}
<<<END>>>