.page-about {
  --about-rule: rgba(27, 31, 36, .16);
  --about-rule-dark: rgba(246, 248, 247, .24);
  --about-pad: clamp(3rem, 7.5vw, 5.5rem);
  --about-soft: rgba(246, 248, 247, .82);
  background: var(--snow);
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.75;
  overflow-x: hidden;
}

.page-about *,
.page-about *::before,
.page-about *::after {
  box-sizing: border-box;
}

.page-about h1,
.page-about h2,
.page-about h3 {
  font-family: var(--font-head);
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: -.01em;
  margin: 0;
}

.page-about p {
  margin: 0 0 1rem;
}

.page-about a {
  color: inherit;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: calc(var(--header-h) + 2.75rem) 0 3.25rem;
  background:
    radial-gradient(115% 85% at 88% 4%, rgba(217, 164, 65, .22), transparent 62%),
    linear-gradient(158deg, #063B3A 0%, #0A4C8C 118%);
  color: var(--snow);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(246, 248, 247, .075) 1px, transparent 1px),
    linear-gradient(90deg, rgba(246, 248, 247, .075) 1px, transparent 1px);
  background-size: 74px 74px;
  -webkit-mask-image: radial-gradient(125% 95% at 68% 0%, #000 28%, transparent 78%);
  mask-image: radial-gradient(125% 95% at 68% 0%, #000 28%, transparent 78%);
  pointer-events: none;
}

.page-about .about-hero .container {
  position: relative;
  z-index: 1;
}

.page-about .breadcrumbs__list {
  color: rgba(246, 248, 247, .72);
  font-size: .8125rem;
}

.page-about .breadcrumbs__list a {
  color: rgba(246, 248, 247, .82);
  text-decoration: none;
  border-bottom: 1px solid rgba(246, 248, 247, .3);
}

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

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.25rem;
  margin-top: 1.75rem;
}

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

.page-about .about-hero h1 {
  font-size: clamp(2.1rem, 6.6vw, 4.1rem);
  margin: .6rem 0 1.15rem;
  max-width: 22ch;
}

.page-about .about-hero__text {
  font-size: clamp(1rem, 2.4vw, 1.125rem);
  color: var(--about-soft);
  max-width: 36rem;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  margin-top: 1.6rem;
}

.page-about .about-hero .btn--ghost {
  border-color: rgba(246, 248, 247, .55);
  color: var(--snow);
  background: transparent;
}

.page-about .about-hero .btn--ghost:hover,
.page-about .about-hero .btn--ghost:focus-visible {
  border-color: var(--gold);
  color: var(--ink);
  background: var(--gold);
}

.page-about .about-hero__facts {
  border: 2px solid var(--about-rule-dark);
  background: rgba(4, 32, 31, .52);
  padding: 1.35rem 1.2rem 1.1rem;
  box-shadow: 8px 8px 0 rgba(3, 20, 20, .28);
}

.page-about .hero-facts__title {
  font-size: .72rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--gold);
  margin: 0 0 1rem;
}

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

.page-about .hero-facts__list li {
  display: flex;
  align-items: baseline;
  gap: .85rem;
  padding: .75rem 0;
  border-bottom: 1px dashed rgba(246, 248, 247, .18);
}

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

.page-about .hero-facts__num {
  flex: 0 0 auto;
  min-width: 3.6rem;
  font-size: 1.7rem;
  line-height: 1;
  color: var(--gold);
}

.page-about .hero-facts__label {
  font-size: .9rem;
  color: var(--about-soft);
  line-height: 1.55;
}

/* ---------- 章节通用 ---------- */
.page-about .about-section {
  position: relative;
  padding: var(--about-pad) 0;
}

.page-about .about-section--snow {
  background: var(--snow);
  color: var(--ink);
}

.page-about .about-section--ink {
  background: linear-gradient(180deg, #063B3A 0%, #042B2A 100%);
  color: var(--snow);
}

.page-about .about-section--blue {
  background:
    radial-gradient(90% 70% at 12% 0%, rgba(207, 227, 242, .18), transparent 60%),
    var(--blue);
  color: var(--snow);
}

.page-about .about-section--teal {
  background: linear-gradient(200deg, #063B3A 0%, #052F2E 65%, #0A4C8C 150%);
  color: var(--snow);
}

.page-about .about-section__head {
  max-width: 46rem;
  margin-bottom: 2rem;
}

.page-about .about-section__head h2 {
  font-size: clamp(1.7rem, 4.4vw, 2.85rem);
  margin: .5rem 0 .9rem;
}

.page-about .about-section__intro {
  font-size: 1.0625rem;
  color: rgba(27, 31, 36, .78);
  margin: 0;
}

.page-about .about-section--ink .about-section__intro,
.page-about .about-section--blue .about-section__intro,
.page-about .about-section--teal .about-section__intro {
  color: var(--about-soft);
}

.page-about .about-section--ink .eyebrow,
.page-about .about-section--blue .eyebrow,
.page-about .about-section--teal .eyebrow {
  color: var(--gold);
}

.page-about .media-frame__caption {
  font-size: .8125rem;
  line-height: 1.6;
  color: rgba(27, 31, 36, .68);
  margin-top: .7rem;
}

.page-about .about-section--ink .media-frame__caption,
.page-about .about-section--teal .media-frame__caption {
  color: rgba(246, 248, 247, .7);
}

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

/* ---------- 团队分工 ---------- */
.page-about .team-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.1rem;
  margin-top: 2rem;
}

.page-about .team-card {
  position: relative;
  border: 2px solid var(--ink);
  background: #fff;
  padding: 1.5rem 1.3rem 1.4rem;
  box-shadow: var(--shadow-hard);
  transition: transform .28s var(--ease), box-shadow .28s var(--ease), border-color .28s var(--ease);
}

.page-about .team-card::before {
  content: "";
  position: absolute;
  left: -2px;
  top: -2px;
  width: 0;
  height: 6px;
  background: var(--gold);
  transition: width .35s var(--ease);
}

.page-about .team-card:hover,
.page-about .team-card:focus-within {
  transform: translate(-4px, -4px);
  border-color: var(--blue);
  box-shadow: 12px 12px 0 rgba(10, 76, 140, .2);
}

.page-about .team-card:hover::before,
.page-about .team-card:focus-within::before {
  width: calc(100% + 4px);
}

.page-about .team-card__num {
  display: inline-block;
  font-size: .78rem;
  letter-spacing: .16em;
  padding: .2rem .5rem;
  color: var(--ink);
  background: var(--sky);
  margin-bottom: .85rem;
}

.page-about .team-card h3 {
  font-size: 1.3rem;
  margin-bottom: .6rem;
}

.page-about .team-card p {
  font-size: .9875rem;
  color: rgba(27, 31, 36, .8);
  margin: 0 0 1rem;
}

.page-about .team-card__tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
  margin: 0;
  padding: 0;
}

.page-about .team-card__tags li {
  font-size: .78rem;
  padding: .18rem .55rem;
  border: 1.5px solid var(--about-rule);
  color: rgba(27, 31, 36, .72);
}

/* ---------- 旁注 ---------- */
.page-about .about-aside {
  margin-top: 2rem;
  background: #fff;
  border: 2px solid var(--ink);
  border-left: 8px solid var(--wine);
  padding: 1.3rem 1.25rem;
  box-shadow: var(--shadow-hard);
}

.page-about .about-aside p {
  font-size: .95rem;
  color: rgba(27, 31, 36, .82);
}

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

.page-about .about-aside__tag {
  display: inline-block;
  font-size: .72rem;
  letter-spacing: .14em;
  color: var(--snow);
  background: var(--wine);
  padding: .16rem .55rem;
  margin-bottom: .7rem;
}

.page-about .note-more {
  border-top: 1px dashed var(--about-rule);
  padding-top: .75rem;
  margin-top: .25rem;
}

.page-about .note-more summary {
  cursor: pointer;
  font-size: .875rem;
  font-weight: 700;
  color: var(--blue);
  list-style: none;
}

.page-about .note-more summary::-webkit-details-marker {
  display: none;
}

.page-about .note-more summary::after {
  content: " +";
  font-family: var(--font-mono);
  color: var(--gold);
}

.page-about .note-more[open] summary::after {
  content: " −";
}

.page-about .note-more__body {
  padding-top: .6rem;
}

.page-about .note-more__body p {
  font-size: .9rem;
  color: rgba(27, 31, 36, .74);
  margin: 0;
}

/* ---------- 发展历程 ---------- */
.page-about .milestone-jump {
  display: flex;
  gap: .5rem;
  overflow-x: auto;
  padding-bottom: .6rem;
  margin-bottom: 2rem;
  -webkit-overflow-scrolling: touch;
}

.page-about .milestone-jump a {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: .85rem;
  text-decoration: none;
  padding: .3rem .72rem;
  border: 1.5px solid var(--about-rule-dark);
  color: var(--sky);
  transition: background .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease);
}

.page-about .milestone-jump a:hover,
.page-about .milestone-jump a:focus-visible {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--ink);
}

.page-about .milestone-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.25rem;
}

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

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: .44rem;
  top: .7rem;
  bottom: .7rem;
  width: 2px;
  background: linear-gradient(180deg, var(--gold), rgba(217, 164, 65, .12));
}

.page-about .timeline__item {
  position: relative;
  padding-left: 2.35rem;
  padding-bottom: 1.9rem;
}

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

.page-about .timeline__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: .5rem;
  width: .95rem;
  height: .95rem;
  border: 2px solid var(--gold);
  border-radius: 50%;
  background: #042B2A;
}

.page-about .timeline__year {
  display: block;
  font-size: 1.05rem;
  letter-spacing: .1em;
  color: var(--gold);
  margin-bottom: .25rem;
}

.page-about .timeline__body h3 {
  font-size: 1.18rem;
  margin-bottom: .45rem;
}

.page-about .timeline__body p {
  font-size: .9625rem;
  color: var(--about-soft);
  margin: 0;
  max-width: 40rem;
}

.page-about .milestone-aside {
  display: grid;
  gap: 1.25rem;
}

.page-about .milestone-aside .aside-note {
  margin-top: 0;
  background: rgba(4, 32, 31, .6);
  border: 2px solid var(--about-rule-dark);
  border-left: 6px solid var(--gold);
  color: var(--snow);
  box-shadow: none;
}

.page-about .milestone-aside .aside-note p {
  color: var(--about-soft);
}

.page-about .milestone-aside .aside-note .about-aside__tag {
  background: var(--gold);
  color: var(--ink);
}

/* ---------- 周三批次 ---------- */
.page-about .batch-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.35rem;
}

.page-about .batch-step {
  border-top: 3px solid var(--ink);
  padding-top: 1rem;
}

.page-about .batch-step__num {
  display: block;
  font-size: 1.55rem;
  line-height: 1;
  color: var(--blue);
  margin-bottom: .55rem;
}

.page-about .batch-step h3 {
  font-size: 1.14rem;
  margin-bottom: .45rem;
}

.page-about .batch-step p {
  font-size: .9375rem;
  color: rgba(27, 31, 36, .78);
  margin: 0;
}

.page-about .batch-meta {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin-top: 2.25rem;
  background: var(--about-rule);
  border: 2px solid var(--ink);
}

.page-about .batch-meta__item {
  background: #fff;
  padding: 1.1rem 1.15rem;
}

.page-about .batch-meta__num {
  display: block;
  font-size: 1.9rem;
  line-height: 1.1;
  color: var(--teal);
}

.page-about .batch-meta__label {
  font-size: .84rem;
  color: rgba(27, 31, 36, .68);
}

.page-about .batch-link {
  margin: 1.75rem 0 0;
  font-size: .95rem;
}

.page-about .batch-link a {
  color: var(--blue);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 2px solid var(--gold);
  padding-bottom: 1px;
}

.page-about .batch-link a:hover,
.page-about .batch-link a:focus-visible {
  color: var(--ink);
  background: rgba(217, 164, 65, .28);
}

.page-about .batch-link__sep {
  margin: 0 .6rem;
  color: var(--gravel);
}

/* ---------- 资质与生态 ---------- */
.page-about .cred-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.15rem;
}

.page-about .cred-card {
  border: 2px solid rgba(246, 248, 247, .4);
  background: rgba(4, 32, 31, .26);
  padding: 1.4rem 1.25rem;
}

.page-about .cred-card__num {
  display: inline-block;
  font-size: .8rem;
  letter-spacing: .12em;
  color: var(--ink);
  background: var(--gold);
  padding: .12rem .55rem;
  margin-bottom: .85rem;
}

.page-about .cred-card h3 {
  font-size: 1.22rem;
  margin-bottom: .55rem;
}

.page-about .cred-card p {
  font-size: .9375rem;
  color: var(--about-soft);
  margin: 0 0 1rem;
}

.page-about .cred-tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
  margin: 0;
  padding: 0;
}

.page-about .cred-tags li {
  font-size: .78rem;
  padding: .16rem .55rem;
  border: 1.5px solid var(--about-rule-dark);
  color: var(--sky);
}

/* ---------- 覆盖与客户结构 ---------- */
.page-about .coverage-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.page-about .coverage-visual img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 2px solid var(--ink);
  box-shadow: var(--shadow-blue);
  background: var(--sky);
}

.page-about .coverage-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--about-rule);
  border: 2px solid var(--ink);
  margin-bottom: 1.75rem;
}

.page-about .stat {
  background: #fff;
  padding: 1.05rem 1rem;
}

.page-about .stat__num {
  display: block;
  font-size: clamp(1.6rem, 5vw, 2.2rem);
  line-height: 1.1;
  color: var(--blue);
}

.page-about .stat__label {
  font-size: .84rem;
  color: rgba(27, 31, 36, .7);
}

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

.page-about .mix__item {
  margin-bottom: 1.05rem;
}

.page-about .mix__meta {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  font-size: .9rem;
  color: rgba(27, 31, 36, .82);
}

.page-about .mix__track {
  height: .55rem;
  margin-top: .4rem;
  background: rgba(27, 31, 36, .1);
  overflow: hidden;
}

.page-about .mix__bar {
  display: block;
  height: 100%;
  background: var(--blue);
}

.page-about .mix__item:nth-child(1) .mix__bar { width: 42%; background: var(--blue); }
.page-about .mix__item:nth-child(2) .mix__bar { width: 28%; background: var(--oasis); }
.page-about .mix__item:nth-child(3) .mix__bar { width: 18%; background: var(--gold); }
.page-about .mix__item:nth-child(4) .mix__bar { width: 12%; background: var(--wine); }

.page-about .coverage-foot {
  font-size: .9rem;
  color: rgba(27, 31, 36, .7);
  border-left: 3px solid var(--gold);
  padding-left: .9rem;
  margin: 1.5rem 0 0;
}

/* ---------- 联系团队 ---------- */
.page-about .contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.25rem;
}

.page-about .contact-main h2 {
  font-size: clamp(1.7rem, 4.4vw, 2.7rem);
  margin: .5rem 0 1rem;
}

.page-about .contact-text {
  font-size: 1rem;
  color: var(--about-soft);
  margin-bottom: 1.6rem;
}

.page-about .contact-routes {
  list-style: none;
  margin: 0 0 1.5rem;
  padding: 0;
  border-top: 2px solid var(--about-rule-dark);
}

.page-about .contact-route {
  display: flex;
  align-items: baseline;
  gap: .8rem;
  padding: .72rem 0;
  border-bottom: 1px solid rgba(246, 248, 247, .16);
  font-size: .9375rem;
  color: var(--about-soft);
}

.page-about .contact-route .mono {
  color: var(--gold);
  font-size: .8rem;
  letter-spacing: .1em;
}

.page-about .contact-detail {
  border: 2px solid var(--about-rule-dark);
  background: rgba(4, 32, 31, .4);
  padding: 1.2rem 1.15rem;
}

.page-about .contact-detail__item {
  padding: .6rem 0;
  border-bottom: 1px dashed rgba(246, 248, 247, .18);
}

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

.page-about .contact-detail__label {
  display: block;
  font-size: .74rem;
  letter-spacing: .14em;
  color: var(--gold);
  margin-bottom: .2rem;
}

.page-about .contact-detail__value {
  display: block;
  font-size: .9375rem;
  color: var(--snow);
  word-break: break-word;
}

.page-about .contact-note {
  font-size: .8125rem;
  color: rgba(246, 248, 247, .68);
  margin: .9rem 0 0;
}

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

  .page-about .batch-steps {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem 1.75rem;
  }

  .page-about .team-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.4rem;
  }

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

  .page-about .cred-card:first-child {
    grid-column: span 2;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero {
    padding-top: calc(var(--header-h) + 4rem);
    padding-bottom: 4.5rem;
  }

  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
    gap: 3rem;
    align-items: start;
    margin-top: 2.25rem;
  }

  .page-about .about-hero__facts {
    margin-top: 2.5rem;
  }

  .page-about .milestone-layout {
    grid-template-columns: minmax(0, 1.32fr) minmax(0, .68fr);
    gap: 3rem;
    align-items: start;
  }

  .page-about .milestone-aside {
    position: sticky;
    top: calc(var(--header-h) + 1.5rem);
  }

  .page-about .coverage-layout {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    gap: 2.75rem;
    align-items: start;
  }

  .page-about .contact-grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, .98fr);
    gap: 3rem;
    align-items: start;
  }

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

  .page-about .cred-card:first-child {
    grid-column: auto;
  }
}

@media (min-width: 1024px) {
  .page-about .batch-steps {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-about .team-grid {
    gap: 1.6rem;
  }

  .page-about .team-card {
    padding: 1.8rem 1.6rem 1.6rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .team-card,
  .page-about .team-card::before,
  .page-about .milestone-jump a {
    transition: none;
  }

  .page-about .team-card:hover,
  .page-about .team-card:focus-within {
    transform: none;
  }
}
<<<END>>>