.page-about {
  --about-rule: 1px solid rgba(39, 83, 107, 0.28);
  --about-rule-soft: 1px solid rgba(39, 83, 107, 0.16);
  background: var(--paper);
  color: var(--graphite);
}

/* ---------- 面包屑 ---------- */
.page-about .about-crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.55rem;
  padding-top: clamp(1.6rem, 4vw, 2.6rem);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.page-about .about-crumb a {
  color: var(--muted);
  text-decoration: none;
  transition: color 0.26s var(--ease);
}

.page-about .about-crumb a:hover,
.page-about .about-crumb a:focus-visible {
  color: var(--gold);
}

.page-about .about-crumb__sep {
  color: rgba(110, 118, 129, 0.55);
}

.page-about .about-crumb [aria-current="page"] {
  color: var(--ink-deep);
}

/* ---------- 页头 ---------- */
.page-about .about-head {
  display: grid;
  gap: 1.15rem;
  padding: clamp(1.4rem, 4vw, 2.4rem) 0 clamp(1.8rem, 4.5vw, 3rem);
  border-bottom: var(--about-rule);
}

.page-about .about-head__kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-about .about-head__title {
  margin: 0;
  max-width: 17ch;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: clamp(2rem, 7.4vw, 4rem);
  line-height: 1.1;
  letter-spacing: -0.015em;
  color: var(--ink-deep);
}

.page-about .about-head__lede {
  margin: 0;
  max-width: 63ch;
  font-size: clamp(1rem, 1.7vw, 1.08rem);
  line-height: 1.9;
  color: var(--graphite);
}

/* ---------- 概览数字条 ---------- */
.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0;
  margin: 0.35rem 0 0;
  padding: 0;
  list-style: none;
  border-top: var(--about-rule);
}

.page-about .about-stats__item {
  display: grid;
  gap: 0.2rem;
  padding: 0.95rem 0.9rem 0.95rem 0;
  border-bottom: var(--about-rule-soft);
  min-width: 0;
}

.page-about .about-stats__k {
  font-family: var(--font-mono);
  font-size: clamp(1.35rem, 4vw, 1.8rem);
  font-weight: 600;
  line-height: 1.15;
  color: var(--ink-deep);
}

.page-about .about-stats__v {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: var(--muted);
}

/* ---------- 三栏骨架 ---------- */
.page-about .about-rails {
  padding-block: clamp(2rem, 5vw, 3.4rem) clamp(3rem, 7vw, 5.5rem);
}

.page-about .about-main {
  min-width: 0;
}

.page-about .rail__no {
  display: inline-block;
  min-width: 2.1em;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--gold);
}

.page-about .tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0.6rem 0 1.4rem;
  padding: 0;
  list-style: none;
}

/* ---------- 章节 ---------- */
.page-about .about-sec {
  padding-block: clamp(2rem, 4.5vw, 3.4rem);
  border-bottom: var(--about-rule-soft);
}

.page-about .about-sec:first-child {
  padding-top: 0;
}

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

.page-about .about-sec__num {
  margin: 0 0 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  color: var(--gold);
}

.page-about .about-sec > .section-title {
  margin: 0 0 0.85rem;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: clamp(1.45rem, 3.6vw, 2.05rem);
  line-height: 1.28;
  color: var(--ink-deep);
}

.page-about .about-sec > .section-lede {
  margin: 0 0 1.7rem;
  max-width: 58ch;
  font-size: 0.97rem;
  line-height: 1.9;
  color: var(--muted);
}

.page-about .sub-title {
  margin: clamp(1.8rem, 4vw, 2.4rem) 0 1rem;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 1.08rem;
  line-height: 1.4;
  color: var(--ink-deep);
}

.page-about .about-prose {
  min-width: 0;
}

.page-about .about-prose p {
  margin: 0 0 1.05rem;
  font-size: 1.01rem;
  line-height: 1.9;
  color: var(--graphite);
}

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

/* ---------- 图框 ---------- */
.page-about .about-figure {
  margin: clamp(1.4rem, 3.5vw, 2rem) 0 0;
  border: var(--about-rule);
  background: var(--paper-2);
  box-shadow: 0 1px 0 rgba(11, 28, 44, 0.06), 0 12px 28px -22px rgba(11, 28, 44, 0.5);
}

.page-about .about-figure--compact {
  max-width: 600px;
  margin-top: clamp(1.8rem, 4vw, 2.4rem);
}

.page-about .about-figure .figure-frame__media {
  display: block;
  overflow: hidden;
}

.page-about .about-figure .figure-frame__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .about-figure .figure-frame__caption {
  padding: 0.7rem 0.95rem;
  border-top: var(--about-rule);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 时间线 ---------- */
.page-about .tl {
  margin: clamp(1.6rem, 4vw, 2.4rem) 0 0;
  padding: 0;
  list-style: none;
  border-left: 1px solid rgba(39, 83, 107, 0.4);
}

.page-about .tl__item {
  position: relative;
  display: grid;
  gap: 0.7rem;
  padding: 1.5rem 0 1.5rem 1.4rem;
  border-bottom: var(--about-rule-soft);
}

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

.page-about .tl__item::before {
  content: "";
  position: absolute;
  left: -4.5px;
  top: 1.85rem;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gold);
}

.page-about .tl__scale {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
}

.page-about .tl__year {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--ink-deep);
}

.page-about .tl__tag {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-about .tl__body {
  min-width: 0;
  max-width: 62ch;
}

.page-about .tl__title {
  margin: 0 0 0.55rem;
  padding-top: 0.7rem;
  max-width: 30ch;
  border-top: 3px solid var(--gold);
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 1.1rem;
  line-height: 1.45;
  color: var(--ink-deep);
}

.page-about .tl__item--wine .tl__title {
  border-top-color: var(--wine);
}

.page-about .tl__item--indigo .tl__title {
  border-top-color: var(--indigo);
}

.page-about .tl__item--celadon .tl__title {
  border-top-color: var(--celadon);
}

.page-about .tl__body p {
  margin: 0 0 0.75rem;
  font-size: 0.98rem;
  line-height: 1.9;
  color: var(--graphite);
}

.page-about .tl__refs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0;
}

.page-about .tl__refs .tag {
  text-decoration: none;
  transition: border-color 0.26s var(--ease), color 0.26s var(--ease);
}

.page-about .tl__refs .tag:hover,
.page-about .tl__refs .tag:focus-visible {
  border-color: var(--gold);
  color: var(--gold);
}

/* ---------- 产品线清单 ---------- */
.page-about .line-list {
  margin: clamp(1.4rem, 3.5vw, 2rem) 0 0;
  padding: 0;
  list-style: none;
  border-top: var(--about-rule);
}

.page-about .line-list__item {
  display: grid;
  gap: 0.25rem;
  padding: 0.85rem 0;
  border-bottom: var(--about-rule-soft);
}

.page-about .line-list__name {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 1rem;
  color: var(--ink-deep);
}

.page-about .line-list__note {
  font-size: 0.93rem;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 迭代列表 ---------- */
.page-about .iter {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0;
  border-top: var(--about-rule-soft);
}

.page-about .iter__item {
  display: grid;
  grid-template-columns: 2.6rem minmax(0, 1fr);
  gap: 0.9rem;
  align-items: baseline;
  padding: 0.8rem 0;
  border-bottom: var(--about-rule-soft);
}

.page-about .iter__no {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--celadon);
}

.page-about .iter__text {
  margin: 0;
  font-size: 0.96rem;
  line-height: 1.85;
  color: var(--graphite);
}

/* ---------- 服务专区 ---------- */
.page-about .about-sec--service {
  padding-inline: clamp(0.95rem, 2.6vw, 1.9rem);
  border-left: var(--about-rule-soft);
  border-right: var(--about-rule-soft);
  background: linear-gradient(180deg, rgba(228, 222, 210, 0.5), rgba(244, 241, 234, 0) 78%);
}

.page-about .svc-grid {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
  border-top: var(--about-rule);
  border-left: var(--about-rule);
}

.page-about .svc {
  padding: 1.25rem 1.1rem 1.5rem;
  border-right: var(--about-rule);
  border-bottom: var(--about-rule);
  background: rgba(255, 255, 255, 0.42);
  transition: background 0.26s var(--ease);
}

.page-about .svc:hover {
  background: rgba(127, 179, 163, 0.16);
}

.page-about .svc:nth-child(4n + 1) {
  box-shadow: inset 0 3px 0 var(--gold);
}

.page-about .svc:nth-child(4n + 2) {
  box-shadow: inset 0 3px 0 var(--celadon);
}

.page-about .svc:nth-child(4n + 3) {
  box-shadow: inset 0 3px 0 var(--wine);
}

.page-about .svc:nth-child(4n + 4) {
  box-shadow: inset 0 3px 0 var(--indigo);
}

.page-about .svc__num {
  display: block;
  margin-bottom: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  color: var(--gold);
}

.page-about .svc__title {
  margin: 0 0 0.45rem;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 1.02rem;
  line-height: 1.4;
  color: var(--ink-deep);
}

.page-about .svc__note {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 团队与协作 ---------- */
.page-about .about-split {
  display: grid;
  gap: 1.6rem;
}

.page-about .about-split .about-figure {
  margin-top: 0;
}

/* ---------- 下一步入口 ---------- */
.page-about .next-list {
  margin: clamp(1.3rem, 3.5vw, 1.8rem) 0 0;
  padding: 0;
  list-style: none;
  border-top: var(--about-rule);
}

.page-about .next-list__item {
  border-bottom: var(--about-rule-soft);
}

.page-about .next-list__link {
  display: grid;
  gap: 0.25rem;
  padding: 1rem 0 1.1rem;
  text-decoration: none;
  color: inherit;
}

.page-about .next-list__label {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 1rem;
  color: var(--ink-deep);
  transition: color 0.26s var(--ease);
}

.page-about .next-list__link:hover .next-list__label,
.page-about .next-list__link:focus-visible .next-list__label {
  color: var(--gold);
}

.page-about .next-list__note {
  font-size: 0.93rem;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    border-bottom: var(--about-rule-soft);
  }

  .page-about .about-stats__item {
    border-bottom: 0;
    padding: 1rem 1rem 1rem 0;
  }

  .page-about .about-stats__item + .about-stats__item {
    border-left: var(--about-rule-soft);
    padding-left: 1.1rem;
  }

  .page-about .line-list__item {
    grid-template-columns: 150px minmax(0, 1fr);
    align-items: baseline;
    gap: 1.1rem;
  }

  .page-about .next-list__link {
    grid-template-columns: 150px minmax(0, 1fr);
    align-items: baseline;
    gap: 1.2rem;
  }

  .page-about .svc-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 720px) {
  .page-about .tl {
    border-left: 0;
  }

  .page-about .tl__item {
    grid-template-columns: 128px minmax(0, 1fr);
    gap: 1.7rem;
    padding: 1.6rem 0 1.6rem;
    border-top: var(--about-rule-soft);
    border-bottom: 0;
  }

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

  .page-about .tl__item:last-child {
    padding-bottom: 1.6rem;
  }

  .page-about .tl__scale {
    position: relative;
    display: grid;
    justify-items: end;
    gap: 0.3rem;
    padding-right: 1.5rem;
    border-right: var(--about-rule);
  }

  .page-about .tl__scale::after {
    content: "";
    position: absolute;
    right: -4.5px;
    top: 0.5rem;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--gold);
  }

  .page-about .tl__title {
    padding-top: 0.75rem;
  }

  .page-about .tl__item:nth-child(odd) .tl__body {
    max-width: 64ch;
  }

  .page-about .tl__item:nth-child(even) .tl__body {
    max-width: 54ch;
  }
}

@media (min-width: 860px) {
  .page-about .about-split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.8fr);
    align-items: start;
    gap: clamp(1.8rem, 4vw, 3rem);
  }
}

@media (min-width: 1024px) {
  .page-about .about-sec--narrow {
    padding-inline-end: 12%;
  }

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

@media (min-width: 1180px) {
  .page-about .about-main {
    padding-inline: clamp(0.6rem, 1.6vw, 1.4rem);
  }
}
</｜｜DSML｜｜ parameter>
</invoke>
</｜｜DSML｜｜ calls>