.page-about {
  --about-gap: clamp(26px, 5vw, 56px);
  --about-num: clamp(46px, 12vw, 96px);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding: clamp(20px, 5vw, 42px) 0 clamp(30px, 6vw, 62px);
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 5vw, 44px);
  margin-top: clamp(22px, 4vw, 38px);
}

.page-about .about-hero__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(31px, 7.4vw, 60px);
  line-height: 1.14;
  letter-spacing: -0.012em;
  margin: 14px 0 16px;
  color: var(--c-mist);
  text-shadow: 3px 3px 0 rgba(0, 0, 0, 0.42);
}

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

.page-about .about-hero__panel {
  align-self: start;
  border-left: 3px solid var(--c-red);
}

.page-about .about-facts {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-facts li {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  padding: 11px 0;
  border-bottom: 1px solid var(--line);
}

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

.page-about .about-facts__k {
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--c-slate);
}

.page-about .about-facts__v {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 19px;
  font-variant-numeric: tabular-nums;
  color: var(--c-yellow);
}

/* ---------- 章节头 ---------- */
.page-about .about-chapter__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(14px, 3vw, 28px);
  align-items: start;
  margin-bottom: clamp(24px, 5vw, 46px);
}

.page-about .chapter__num {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: var(--about-num);
  line-height: 0.84;
  font-variant-numeric: tabular-nums;
  color: var(--c-red);
  text-shadow: 3px 3px 0 rgba(142, 31, 20, 0.6);
}

.page-about .about-chapter__headText {
  padding-top: 4px;
}

.page-about .about-chapter__headText .chapter__lead {
  margin: 12px 0 0;
}

/* ---------- 图文分栏 ---------- */
.page-about .about-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 4vw, 42px);
}

.page-about .about-split__text p:first-child {
  margin-top: 0;
}

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

/* ---------- 时间轴 ---------- */
.page-about .stage-track {
  margin: clamp(6px, 2vw, 14px) 0 clamp(30px, 5vw, 50px);
  position: relative;
}

.page-about .stage-track__rail {
  display: none;
}

.page-about .stage-track__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

.page-about .stage-track__item {
  position: relative;
  padding: 0 0 20px 24px;
  border-left: 2px solid var(--line);
}

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

.page-about .stage-track__link {
  display: block;
  text-decoration: none;
  color: inherit;
}

.page-about .stage-track__dot {
  position: absolute;
  left: -7px;
  top: 5px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--c-red);
  box-shadow: 0 0 0 3px var(--c-ink), 0 0 0 4px var(--line-strong);
  transition: background var(--t-fast), box-shadow var(--t-fast);
}

.page-about .stage-track__link:hover .stage-track__dot,
.page-about .stage-track__link:focus-visible .stage-track__dot {
  background: var(--c-yellow);
  box-shadow: 0 0 0 3px var(--c-ink), 0 0 0 5px var(--c-red);
}

.page-about .stage-track__name {
  display: block;
  font-weight: 600;
  font-size: 15px;
  color: var(--c-mist);
  letter-spacing: 0.04em;
}

.page-about .stage-track__year {
  display: block;
  margin-top: 2px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--c-slate);
}

/* ---------- 阶段条目 ---------- */
.page-about .stages {
  display: grid;
  gap: clamp(24px, 4vw, 38px);
}

.page-about .stage {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  gap: 16px;
}

.page-about .stage__marker {
  position: relative;
  margin-top: 6px;
}

.page-about .stage__marker::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 0;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--c-yellow);
  border: 3px solid var(--c-ink);
  box-shadow: 0 0 0 1px var(--c-red);
}

.page-about .stage__marker::after {
  content: "";
  position: absolute;
  left: 8px;
  top: 18px;
  bottom: -34px;
  width: 2px;
  background: linear-gradient(180deg, rgba(226, 58, 40, 0.72), rgba(245, 193, 27, 0.16));
}

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

.page-about .stage__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(21px, 4.6vw, 30px);
  line-height: 1.28;
  margin: 12px 0 10px;
  color: var(--c-mist);
}

.page-about .stage__text {
  margin: 0;
  font-size: 16px;
  line-height: 1.82;
  color: #C9CFD8;
}

/* ---------- 团队数据块 ---------- */
.page-about .team-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-about .team-card {
  border: 2px solid var(--line-strong);
  background: var(--c-graphite);
  padding: 20px 18px 18px;
  box-shadow: var(--shadow-hard);
  transition: border-color var(--t-fast), transform var(--t-med), box-shadow var(--t-med);
}

.page-about .team-card:hover {
  border-color: var(--c-red);
  transform: translateY(-3px);
  box-shadow: 6px 9px 0 rgba(0, 0, 0, 0.5);
}

.page-about .team-card__value {
  margin: 0;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(34px, 8vw, 48px);
  line-height: 1;
  font-variant-numeric: tabular-nums;
  color: var(--c-yellow);
}

.page-about .team-card__label {
  margin: 10px 0 14px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--c-mist);
}

.page-about .team-card__duty {
  margin: 0;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  font-size: 14px;
  line-height: 1.74;
  color: var(--c-slate);
  transition: color var(--t-fast);
}

.page-about .team-card:hover .team-card__duty {
  color: #C9CFD8;
}

.page-about .about-team__note {
  margin-top: clamp(22px, 4vw, 34px);
}

/* ---------- 图片 ---------- */
.page-about .figure__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  background: var(--c-graphite-2);
}

.page-about .figure--portrait .figure__img {
  aspect-ratio: 4 / 5;
}

.page-about .figure--wide .figure__img {
  aspect-ratio: 14 / 9;
}

.page-about .about-banner {
  margin: clamp(26px, 5vw, 44px) 0 0;
}

/* ---------- 引用块 ---------- */
.page-about .about-quote {
  margin: clamp(26px, 5vw, 42px) 0 0;
  padding: 22px 22px 22px 24px;
  background: var(--c-red-deep);
  border-left: 5px solid var(--c-yellow);
  box-shadow: var(--shadow-hard);
}

.page-about .about-quote p {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--c-mist);
}

/* ---------- 结尾区 ---------- */
.page-about .about-next {
  border: 2px solid var(--line-strong);
  background: var(--c-graphite);
  padding: 22px 20px;
  box-shadow: var(--shadow-hard);
}

.page-about .about-next__list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-about .about-next__list li {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.page-about .about-next__list li:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-about .about-next__idx {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--c-yellow);
  padding-top: 3px;
}

.page-about .about-next__txt {
  font-size: 15px;
  line-height: 1.76;
  color: #C9CFD8;
}

.page-about .about-outro {
  margin-top: clamp(30px, 6vw, 56px);
  padding: clamp(22px, 4vw, 32px);
  background: var(--grad-soft), var(--c-graphite-2);
  border: 2px solid var(--line-strong);
  display: grid;
  gap: 20px;
}

.page-about .about-outro__text p {
  margin: 0;
  font-size: 17px;
  line-height: 1.76;
  color: var(--c-mist);
}

.page-about .about-outro__sub {
  margin-top: 10px !important;
  font-size: 14px !important;
  color: var(--c-slate) !important;
  line-height: 1.74 !important;
}

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

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

  .page-about .about-next__list {
    gap: 18px;
  }
}

@media (min-width: 720px) {
  .page-about .stage-track {
    padding-top: 0;
    margin-top: clamp(10px, 2vw, 18px);
  }

  .page-about .stage-track__rail {
    display: block;
    position: absolute;
    left: 0;
    right: 0;
    top: 5px;
    width: 100%;
    height: 2px;
    pointer-events: none;
  }

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

  .page-about .stage-track__item {
    border-left: 0;
    padding: 0 10px;
    text-align: center;
  }

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

  .page-about .stage-track__dot {
    position: static;
    display: block;
    margin: 0 auto 12px;
  }

  .page-about .stage-track__name {
    font-size: 14px;
  }
}

@media (min-width: 860px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-about .about-split {
    grid-template-columns: minmax(0, 1.28fr) minmax(0, 0.72fr);
    align-items: start;
  }

  .page-about .about-split--flip {
    grid-template-columns: minmax(0, 0.78fr) minmax(0, 1.22fr);
  }

  .page-about .about-split--flip .about-split__media {
    order: -1;
  }

  .page-about .about-split--even {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-about .about-outro {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}
</｜｜DSML｜｜ parameter>
</｜｜DSML｜｜ invoke>
</｜｜DSML｜｜ calls>