.page-about {
  --about-rail: 92px;
  --about-line: rgba(212, 175, 55, .28);
  background-color: var(--night);
  color: var(--ivory);
  overflow-x: clip;
}

.page-about .about-crumb {
  padding-block: clamp(1rem, 2.4vw, 1.6rem) 0;
}

.page-about .breadcrumb a {
  color: var(--muted);
  text-decoration: none;
}

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

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  padding-block: clamp(1.6rem, 4vw, 3rem) clamp(3rem, 7vw, 6rem);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -30%;
  right: -18%;
  width: min(72vw, 880px);
  height: min(72vw, 880px);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(212, 175, 55, .15), rgba(212, 175, 55, 0) 62%);
  pointer-events: none;
  z-index: 0;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, var(--about-line), rgba(212, 175, 55, 0) 78%);
  pointer-events: none;
}

.page-about .about-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(2rem, 5vw, 3.6rem);
  grid-template-columns: minmax(0, 1fr);
}

.page-about .about-hero__eyebrow {
  margin: 0 0 1rem;
  font-family: var(--font-mono);
  font-size: .8rem;
  letter-spacing: .26em;
  color: var(--gold-dim);
  text-transform: uppercase;
}

.page-about .about-hero__title {
  margin: 0 0 1.4rem;
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: clamp(2.1rem, 6.4vw, 4.2rem);
  line-height: 1.14;
  letter-spacing: .02em;
  color: var(--ivory);
  text-shadow: 0 0 44px rgba(212, 175, 55, .16);
}

.page-about .about-hero__title::after {
  content: "";
  display: block;
  width: 96px;
  height: 2px;
  margin-top: 1.4rem;
  background: linear-gradient(90deg, var(--gold), rgba(212, 175, 55, 0));
}

.page-about .about-hero__lead {
  max-width: 36em;
  margin: 0 0 1rem;
  font-size: clamp(1.02rem, 2.2vw, 1.16rem);
  line-height: 1.85;
  color: var(--text-soft);
}

.page-about .about-hero__lead--soft {
  color: var(--text-faint);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .85rem;
  margin-top: 1.8rem;
}

.page-about .about-hero__panel {
  padding: clamp(1.4rem, 3vw, 2rem);
  border: 1px solid var(--gold-line);
  border-radius: var(--radius-organic);
  background:
    linear-gradient(160deg, rgba(212, 175, 55, .1), rgba(212, 175, 55, 0) 58%),
    var(--night-2);
  box-shadow: var(--shadow-deep);
}

.page-about .about-stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.15rem;
}

.page-about .about-stats__item {
  display: grid;
  gap: .28rem;
  padding-bottom: 1.05rem;
  border-bottom: 1px solid rgba(154, 163, 184, .18);
}

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

.page-about .about-stats__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.7rem, 5vw, 2.4rem);
  line-height: 1.05;
  color: var(--gold);
  letter-spacing: .01em;
}

.page-about .about-stats__label {
  font-size: .92rem;
  line-height: 1.6;
  color: var(--muted);
}

.page-about .about-hero__note {
  margin: 1.3rem 0 0;
  font-size: .88rem;
  line-height: 1.75;
  color: var(--text-faint);
}

/* ---------- 章节骨架 ---------- */

.page-about .about-chapter {
  position: relative;
  padding-block: var(--pad-block);
}

.page-about .about-chapter--band {
  background:
    linear-gradient(180deg, rgba(22, 32, 58, .9), rgba(11, 18, 32, .55)),
    var(--night);
}

.page-about .about-chapter--band::before,
.page-about .about-chapter--band::after {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, rgba(212, 175, 55, 0), var(--about-line) 32%, rgba(212, 175, 55, 0));
  pointer-events: none;
}

.page-about .about-chapter--band::before { top: 0; }
.page-about .about-chapter--band::after { bottom: 0; }

.page-about .about-chapter__grid {
  display: grid;
  gap: clamp(1.1rem, 3vw, 2rem);
  grid-template-columns: minmax(0, 1fr);
}

.page-about .about-chapter__rail {
  display: flex;
  align-items: baseline;
  gap: .8rem;
}

.page-about .about-chapter__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.5rem, 4.4vw, 2.1rem);
  line-height: 1;
  color: var(--gold);
  letter-spacing: .04em;
}

.page-about .about-chapter__label {
  font-size: .78rem;
  letter-spacing: .3em;
  color: var(--muted);
}

.page-about .about-chapter__title {
  margin: 0 0 1rem;
  font-family: var(--font-serif);
  font-weight: 800;
  font-size: clamp(1.5rem, 4.2vw, 2.35rem);
  line-height: 1.32;
  letter-spacing: .015em;
  color: var(--ivory);
}

.page-about .about-chapter__title::after {
  content: "";
  display: block;
  width: 62px;
  height: 2px;
  margin-top: .9rem;
  background: var(--gold);
}

.page-about .about-chapter__lead {
  max-width: 36em;
  margin: 0 0 1.9rem;
  font-size: clamp(1rem, 2.2vw, 1.1rem);
  line-height: 1.85;
  color: var(--text-soft);
}

.page-about .about-chapter__prose p {
  max-width: 36em;
  margin: 0 0 1.1rem;
  font-size: 1.02rem;
  line-height: 1.85;
  color: var(--text-soft);
}

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

.page-about .about-chapter__split {
  display: grid;
  gap: clamp(1.6rem, 4vw, 2.8rem);
  grid-template-columns: minmax(0, 1fr);
  align-items: start;
}

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

.page-about .about-chapter__figure--wide {
  margin-top: clamp(1.8rem, 4vw, 2.8rem);
}

/* ---------- 02 四条服务线 ---------- */

.page-about .about-lines {
  display: grid;
  gap: clamp(1.2rem, 3vw, 1.8rem);
  grid-template-columns: minmax(0, 1fr);
}

.page-about .about-line {
  position: relative;
  padding-left: 1.15rem;
  border-left: 2px solid var(--gold-line);
}

.page-about .about-line__title {
  margin: 0 0 .5rem;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.14rem;
  letter-spacing: .02em;
  color: var(--gold-bright);
}

.page-about .about-line__text {
  margin: 0;
  font-size: 1rem;
  line-height: 1.82;
  color: var(--text-soft);
}

/* ---------- 03 团队 ---------- */

.page-about .about-team {
  display: grid;
  gap: clamp(1.3rem, 3vw, 2rem);
  grid-template-columns: minmax(0, 1fr);
}

.page-about .about-team__card {
  position: relative;
  padding: clamp(1.2rem, 3vw, 1.7rem);
  border-radius: var(--radius-organic);
  background: linear-gradient(150deg, rgba(212, 175, 55, .08), rgba(212, 175, 55, 0) 62%);
  box-shadow: inset 0 0 0 1px rgba(212, 175, 55, .16);
  transition: transform .3s ease, box-shadow .3s ease;
}

.page-about .about-team__card:hover,
.page-about .about-team__card:focus-within {
  transform: translateY(-4px);
  box-shadow: inset 0 0 0 1px var(--gold-line-strong), var(--shadow-gold);
}

.page-about .about-team__num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(2rem, 6vw, 2.7rem);
  line-height: 1;
  color: var(--gold);
}

.page-about .about-team__role {
  margin: .7rem 0 .6rem;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.16rem;
  color: var(--ivory);
}

.page-about .about-team__text {
  margin: 0;
  font-size: .98rem;
  line-height: 1.8;
  color: var(--text-soft);
}

/* ---------- 04 时间轴 ---------- */

.page-about .timeline {
  list-style: none;
  margin: 0;
  padding: 0 0 0 1.6rem;
  display: grid;
  gap: clamp(1.4rem, 3.4vw, 2rem);
  border-left: 1px solid var(--gold-line);
}

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

.page-about .timeline__item::before {
  content: "";
  position: absolute;
  left: -1.63rem;
  top: .42rem;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 4px rgba(212, 175, 55, .16);
}

.page-about .timeline__year {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.02rem;
  letter-spacing: .08em;
  color: var(--gold-bright);
}

.page-about .timeline__title {
  margin: .35rem 0 .4rem;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.1rem;
  line-height: 1.45;
  color: var(--ivory);
}

.page-about .timeline__text {
  margin: 0;
  font-size: .96rem;
  line-height: 1.78;
  color: var(--text-faint);
}

/* ---------- 05 服务准则 ---------- */

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

.page-about .about-standard__row {
  padding-block: clamp(1rem, 2.6vw, 1.4rem);
  border-top: 1px solid rgba(154, 163, 184, .18);
  display: grid;
  gap: .5rem;
}

.page-about .about-standard__row:last-child {
  border-bottom: 1px solid rgba(154, 163, 184, .18);
}

.page-about .about-standard__term {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.06rem;
  letter-spacing: .02em;
  color: var(--gold-bright);
}

.page-about .about-standard__desc {
  margin: 0;
  max-width: 38em;
  font-size: 1rem;
  line-height: 1.82;
  color: var(--text-soft);
}

/* ---------- 06 长辈适配 ---------- */

.page-about .about-elder {
  list-style: none;
  margin: 0 0 1.6rem;
  padding: 0;
  display: grid;
  gap: clamp(1rem, 2.6vw, 1.5rem);
  grid-template-columns: minmax(0, 1fr);
}

.page-about .about-elder__item {
  padding: clamp(1rem, 2.6vw, 1.4rem);
  border-radius: var(--radius-organic);
  background: rgba(212, 175, 55, .07);
  box-shadow: inset 0 0 0 1px rgba(212, 175, 55, .14);
}

.page-about .about-elder__key {
  display: block;
  font-size: .84rem;
  letter-spacing: .16em;
  color: var(--muted);
}

.page-about .about-elder__val {
  display: block;
  margin-top: .5rem;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.3rem, 4vw, 1.75rem);
  line-height: 1.2;
  color: var(--gold);
}

.page-about .about-elder__note {
  margin: .6rem 0 0;
  font-size: .94rem;
  line-height: 1.75;
  color: var(--text-soft);
}

.page-about .about-elder__closing {
  margin: 0;
  max-width: 38em;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--text-faint);
}

/* ---------- 07 内容合作 ---------- */

.page-about .about-partners {
  display: grid;
  gap: clamp(1.2rem, 3vw, 2rem);
  grid-template-columns: minmax(0, 1fr);
}

.page-about .about-partners__col {
  padding-top: 1.1rem;
  border-top: 2px solid var(--gold-line);
}

.page-about .about-partners__title {
  margin: 0 0 .55rem;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.08rem;
  color: var(--gold-bright);
}

.page-about .about-partners__text {
  margin: 0;
  font-size: .98rem;
  line-height: 1.8;
  color: var(--text-soft);
}

.page-about .about-partners__note {
  margin: 1.8rem 0 0;
  max-width: 38em;
  font-size: .96rem;
  line-height: 1.8;
  color: var(--text-faint);
}

/* ---------- 延伸浏览 ---------- */

.page-about .about-next {
  padding-block: clamp(2.6rem, 6vw, 4.6rem);
  background: linear-gradient(180deg, rgba(11, 18, 32, .4), rgba(22, 32, 58, .9));
  border-top: 1px solid var(--gold-line);
}

.page-about .about-next__title {
  margin: 0 0 1.6rem;
  font-family: var(--font-serif);
  font-weight: 800;
  font-size: clamp(1.3rem, 3.6vw, 1.85rem);
  letter-spacing: .02em;
  color: var(--ivory);
}

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

.page-about .about-next__link {
  display: grid;
  gap: .28rem;
  padding: 1.1rem 1.2rem;
  border-radius: var(--radius-organic);
  text-decoration: none;
  background: rgba(212, 175, 55, .06);
  box-shadow: inset 0 0 0 1px rgba(212, 175, 55, .16);
  transition: transform .28s ease, box-shadow .28s ease, background-color .28s ease;
}

.page-about .about-next__link:hover,
.page-about .about-next__link:focus-visible {
  transform: translateY(-3px);
  background: rgba(212, 175, 55, .12);
  box-shadow: inset 0 0 0 1px var(--gold-line-strong), var(--shadow-gold);
  outline: none;
}

.page-about .about-next__label {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.06rem;
  color: var(--gold-bright);
}

.page-about .about-next__desc {
  font-size: .92rem;
  line-height: 1.7;
  color: var(--text-faint);
}

/* ---------- 图片 ---------- */

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

/* ---------- 响应式 ---------- */

@media (min-width: 720px) {
  .page-about .about-lines,
  .page-about .about-team,
  .page-about .about-elder,
  .page-about .about-next__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    align-items: end;
  }

  .page-about .about-chapter__grid {
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
    gap: clamp(1.6rem, 4vw, 3.2rem);
  }

  .page-about .about-chapter__rail {
    position: sticky;
    top: 130px;
    flex-direction: column;
    align-items: flex-start;
    gap: .9rem;
    align-self: start;
  }

  .page-about .about-chapter__label {
    writing-mode: vertical-rl;
    letter-spacing: .34em;
  }

  .page-about .about-chapter__split {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .7fr);
  }

  .page-about .about-chapter__figure--wide {
    margin-top: clamp(2rem, 4vw, 3rem);
  }

  .page-about .about-standard__row {
    grid-template-columns: minmax(140px, 200px) minmax(0, 1fr);
    gap: 1.6rem;
    align-items: baseline;
  }

  .page-about .timeline {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 1.1rem;
    padding-left: 0;
    padding-top: 1.7rem;
    border-left: 0;
    border-top: 1px solid var(--gold-line);
  }

  .page-about .timeline__item::before {
    left: 0;
    top: -1.72rem;
  }

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

@media (min-width: 1180px) {
  .page-about .about-team {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-team__card,
  .page-about .about-next__link {
    transition: none;
  }

  .page-about .about-team__card:hover,
  .page-about .about-next__link:hover {
    transform: none;
  }
}
<<<END>>>