.page-about {
  --about-rail-w: 10.5rem;
  --about-gap: clamp(2rem, 5vw, 3.5rem);
  padding-block: clamp(1.25rem, 4vw, 2.25rem) clamp(3rem, 7vw, 5rem);
}

.page-about .about-grid {
  display: grid;
  gap: clamp(1.75rem, 4vw, 2.5rem);
  margin-top: clamp(1.25rem, 3vw, 2rem);
}

@media (min-width: 960px) {
  .page-about .about-grid {
    grid-template-columns: var(--about-rail-w) minmax(0, 1fr);
    gap: clamp(2.5rem, 5vw, 4.5rem);
    align-items: start;
  }
}

/* 左侧竖向章节轴 */
.page-about .about-rail {
  position: relative;
  padding-left: 1rem;
  border-left: 1px solid var(--line-soft);
}

.page-about .about-rail::before {
  content: "";
  position: absolute;
  left: -1px;
  top: 0;
  width: 2px;
  height: 2.75rem;
  background: var(--cinnabar);
}

@media (min-width: 960px) {
  .page-about .about-rail {
    position: sticky;
    top: 2.5rem;
  }
}

.page-about .rail-title {
  margin: 0 0 0.85rem;
  font-size: 0.75rem;
  letter-spacing: 0.24em;
  color: var(--index-gray);
}

.page-about .rail-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.35rem;
}

.page-about .rail-link {
  display: inline-block;
  font-size: 0.925rem;
  color: var(--ink);
  text-decoration: none;
  padding-bottom: 0.12rem;
  border-bottom: 1px solid transparent;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-about .rail-link:hover,
.page-about .rail-link:focus-visible {
  color: var(--cinnabar);
  border-bottom-color: var(--cinnabar);
}

@media (min-width: 960px) {
  .page-about .rail-list {
    display: block;
  }

  .page-about .rail-list li + li {
    margin-top: 0.9rem;
  }
}

/* 首屏 */
.page-about .about-hero {
  display: grid;
  gap: clamp(1.75rem, 4vw, 2.5rem);
  align-items: end;
}

@media (min-width: 760px) {
  .page-about .about-hero {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: clamp(2rem, 4vw, 3.5rem);
  }
}

.page-about .about-hero__title {
  margin: 0.55rem 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.4rem, 8vw, 4.4rem);
  line-height: 1.08;
  letter-spacing: -0.01em;
}

.page-about .about-hero__line {
  display: block;
}

.page-about .about-hero__line--soft {
  color: var(--slate);
}

.page-about .about-hero .page-lede {
  margin-top: 1.15rem;
  max-width: 34em;
  line-height: 1.9;
}

.page-about .hero-facts {
  list-style: none;
  margin: 1.6rem 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2.25rem;
}

.page-about .hero-facts li {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.page-about .hero-facts__num {
  font-family: var(--font-display);
  font-size: 1.55rem;
  font-weight: 700;
  line-height: 1.1;
  color: var(--ink);
}

.page-about .hero-facts__label {
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  color: var(--index-gray);
}

.page-about .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.6rem;
}

.page-about .about-hero__figure {
  margin: 0;
  position: relative;
}

.page-about .about-hero__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  border-radius: var(--radius-l);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 2.5rem), calc(100% - 2.5rem) 100%, 0 100%);
}

.page-about .about-hero__figure::after {
  content: "";
  position: absolute;
  left: -0.55rem;
  bottom: 1.5rem;
  width: 2px;
  height: 4.5rem;
  background: var(--gold);
  opacity: 0.85;
}

/* 区块通用骨架 */
.page-about .about-block {
  margin-top: clamp(2.5rem, 6vw, 4.5rem);
  padding-top: clamp(2rem, 5vw, 3.25rem);
  border-top: 1px solid var(--line-soft);
}

.page-about .block-title {
  margin: 0.5rem 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.6rem, 3.6vw, 2.45rem);
  line-height: 1.3;
  letter-spacing: -0.005em;
}

.page-about .block-lede {
  margin: 1rem 0 0;
  max-width: 36em;
  line-height: 1.9;
  color: var(--ink-deep);
}

/* 三层方法 */
.page-about .stance-list {
  list-style: none;
  margin: 1.75rem 0 0;
  padding: 0;
}

.page-about .stance-item {
  padding: 1.35rem 0 1.5rem;
  border-top: 1px solid var(--line-soft);
}

.page-about .stance-item:first-child {
  border-top: 0;
  padding-top: 0.25rem;
}

.page-about .stance-item__num {
  display: inline-block;
  margin-bottom: 0.4rem;
  font-family: var(--font-display);
  font-size: 1.05rem;
  letter-spacing: 0.08em;
  color: var(--gold);
}

.page-about .stance-item__title {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  font-size: 1.22rem;
  font-weight: 700;
  line-height: 1.45;
}

.page-about .stance-item__body p {
  margin: 0;
  max-width: 34em;
  font-size: 0.98rem;
  line-height: 1.95;
  color: var(--ink-deep);
}

@media (min-width: 720px) {
  .page-about .stance-item {
    display: grid;
    grid-template-columns: 3rem minmax(0, 1fr);
    column-gap: 1.5rem;
    align-items: start;
  }

  .page-about .stance-item__num {
    margin: 0.15rem 0 0;
  }

  .page-about .stance-item:nth-child(2) {
    margin-left: clamp(0px, 3vw, 2.25rem);
  }

  .page-about .stance-item:nth-child(3) {
    margin-left: clamp(0px, 6vw, 4.5rem);
  }
}

/* 团队 */
.page-about .team-split {
  display: grid;
  gap: clamp(1.75rem, 4vw, 2.5rem);
  margin-top: 1.75rem;
}

@media (min-width: 860px) {
  .page-about .team-split {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.7fr);
    align-items: start;
  }
}

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

.page-about .team-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.4rem 1rem;
  padding: 1rem 0 1.05rem;
  border-bottom: 1px solid var(--line-soft);
}

.page-about .team-role {
  font-family: var(--font-display);
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--ink);
}

.page-about .team-num {
  justify-self: end;
  font-family: var(--font-display);
  font-size: 1.55rem;
  font-weight: 700;
  line-height: 1;
  color: var(--ink);
  border-top: 2px solid var(--gold);
  padding-top: 0.28rem;
}

.page-about .team-num__unit {
  margin-left: 0.15rem;
  font-family: var(--font-body);
  font-size: 0.72rem;
  font-weight: 400;
  color: var(--gold);
}

.page-about .team-note {
  grid-column: 1 / -1;
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--slate);
}

.page-about .team-foot {
  margin: 1.25rem 0 0;
  font-size: 0.92rem;
  line-height: 1.85;
  color: var(--ink-deep);
  padding-left: 0.9rem;
  border-left: 2px solid var(--mist);
}

.page-about .team-figure {
  margin: 0;
}

.page-about .team-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius-m);
}

/* 时间轴 */
.page-about .timeline {
  list-style: none;
  margin: 1.75rem 0 0;
  padding: 0;
  position: relative;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 0.34rem;
  top: 0.55rem;
  bottom: 0.55rem;
  width: 1px;
  background: var(--line-strong);
}

.page-about .timeline__item {
  position: relative;
  padding-left: 2.1rem;
  padding-bottom: 1.9rem;
}

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

.page-about .timeline__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.5rem;
  width: 0.7rem;
  height: 0.7rem;
  border-radius: 50%;
  background: var(--cinnabar);
  box-shadow: 0 0 0 4px var(--paper);
}

.page-about .timeline__when {
  margin: 0 0 0.2rem;
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  color: var(--gold);
}

.page-about .timeline__what {
  margin: 0 0 0.4rem;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.4;
}

.page-about .timeline__desc {
  margin: 0;
  max-width: 33em;
  font-size: 0.95rem;
  line-height: 1.9;
  color: var(--ink-deep);
}

.page-about .timeline-figure {
  margin: 2rem 0 0;
}

.page-about .timeline-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: var(--radius-l) var(--radius-l) 0 var(--radius-l);
}

.page-about .timeline-figure__caption {
  margin: 0.7rem 0 0;
  font-size: 0.82rem;
  line-height: 1.7;
  color: var(--index-gray);
}

/* 服务范围 */
.page-about .coverage {
  margin-top: 0.5rem;
  padding: clamp(1.5rem, 4vw, 3rem);
  background: var(--ink-deep);
  color: var(--on-dark);
  border-radius: var(--radius-l);
  display: grid;
  gap: clamp(1.75rem, 4vw, 3rem);
}

@media (min-width: 880px) {
  .page-about .coverage {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
  }
}

.page-about .eyebrow--invert {
  color: var(--gold);
}

.page-about .coverage__title {
  margin: 0.45rem 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3.4vw, 2.2rem);
  font-weight: 700;
  line-height: 1.3;
  color: var(--on-dark);
}

.page-about .coverage__text {
  margin: 0.9rem 0 0;
  max-width: 32em;
  font-size: 0.95rem;
  line-height: 1.9;
  color: var(--on-dark-dim);
}

.page-about .coverage__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.85rem 1.5rem;
  margin-top: 1.5rem;
}

.page-about .cov-link {
  color: var(--on-dark);
  font-size: 0.92rem;
  text-decoration: none;
  border-bottom: 1px solid var(--line-invert);
  padding-bottom: 0.1rem;
  transition: border-color 0.25s var(--ease), color 0.25s var(--ease);
}

.page-about .cov-link:hover,
.page-about .cov-link:focus-visible {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

.page-about .cov-list {
  margin: 0;
  display: grid;
  gap: 0;
}

.page-about .cov-line {
  display: grid;
  gap: 0.15rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--line-invert-soft);
}

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

.page-about .cov-line dt {
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  color: var(--on-dark-dim);
}

.page-about .cov-line dd {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--on-dark);
  overflow-wrap: anywhere;
}

@media (min-width: 440px) {
  .page-about .cov-line {
    grid-template-columns: 5.75rem minmax(0, 1fr);
    gap: 0.9rem;
    align-items: baseline;
  }
}
<<<PAGE_CSS_END>>>