.page-about {
  --about-cut: 22px;
  --about-pad: clamp(22px, 3.4vw, 42px);
  --about-gap: clamp(20px, 3vw, 34px);
  display: block;
}

/* ---------- 通用区块骨架 ---------- */
.page-about .about-section {
  position: relative;
  padding: clamp(46px, 7vw, 86px) 0;
  border-top: 1px solid var(--line-soft);
}

.page-about .about-head {
  max-width: 780px;
  margin-bottom: clamp(24px, 3.4vw, 44px);
}

.page-about .about-head h2 {
  margin: 12px 0 14px;
  font-size: clamp(1.58rem, 3.6vw, 2.46rem);
  font-weight: 900;
  line-height: 1.16;
  letter-spacing: -0.012em;
  color: var(--cream-100);
}

.page-about .about-head p {
  margin: 0;
  font-family: var(--font-serif);
  font-size: clamp(1rem, 1.35vw, 1.08rem);
  line-height: 1.85;
  color: var(--text-dim);
}

.page-about .about-head a,
.page-about .about-archive__panel-note a,
.page-about .about-honor__link a {
  color: var(--amber-300);
  text-decoration: none;
  border-bottom: 1px solid var(--line-amber);
}

.page-about .about-head a:hover,
.page-about .about-archive__panel-note a:hover,
.page-about .about-honor__link a:hover {
  color: var(--amber-500);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(22px, 3.6vw, 48px) 0 clamp(40px, 6vw, 78px);
}

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(26px, 4vw, 46px);
}

.page-about .about-hero__title {
  margin: 14px 0 18px;
  max-width: 22ch;
  font-size: clamp(1.98rem, 5.2vw, 3.4rem);
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: -0.018em;
  color: var(--cream-100);
}

.page-about .about-hero__lede {
  margin: 0;
  max-width: 58ch;
}

.page-about .about-hero__media {
  position: relative;
  margin: 0;
  padding: 10px;
  border: 1px solid var(--line);
  background: var(--surface);
}

.page-about .about-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--about-cut)), calc(100% - var(--about-cut)) 100%, 0 100%);
}

.page-about .about-hero__badge {
  position: absolute;
  right: 14px;
  bottom: 14px;
  margin: 0;
  padding: 7px 13px;
  background: var(--amber-500);
  color: var(--ink-950);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  clip-path: polygon(0 0, 100% 0, 100% 100%, 10px 100%, 0 calc(100% - 10px));
}

/* ---------- 数据格 ---------- */
.page-about .about-stats {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(26px, 3.4vw, 42px) 0 0;
  padding: 0;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
}

.page-about .about-stats__item {
  background: var(--ink-950);
  padding: 15px 16px 17px;
}

.page-about .about-stats__num {
  display: block;
  font-size: clamp(1.28rem, 3vw, 1.86rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--amber-300);
}

.page-about .about-stats__label {
  display: block;
  margin-top: 6px;
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  color: var(--text-mute);
}

/* ---------- 时间线 ---------- */
.page-about .about-timeline__layout {
  display: grid;
  gap: clamp(26px, 3.8vw, 48px);
}

.page-about .about-aside-card {
  padding: 10px;
  border: 1px solid var(--line);
  background: var(--surface-2);
}

.page-about .about-aside-card img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  clip-path: polygon(0 0, 100% 0, 100% 100%, var(--about-cut) 100%, 0 calc(100% - var(--about-cut)));
}

.page-about .about-aside-card__caption {
  margin: 12px 4px 4px;
  font-size: 0.84rem;
  line-height: 1.7;
  color: var(--text-mute);
}

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

.page-about .about-step {
  position: relative;
  padding: 0 0 clamp(26px, 3.4vw, 42px) 24px;
  border-left: 1px solid var(--line);
}

.page-about .about-step:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.page-about .about-step::before {
  content: "";
  position: absolute;
  left: -6px;
  top: 12px;
  width: 9px;
  height: 9px;
  background: var(--ink-950);
  border: 2px solid var(--amber-500);
  transform: rotate(45deg);
}

.page-about .about-step__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}

.page-about .about-step__year {
  font-size: clamp(1.42rem, 3.4vw, 2.06rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--amber-500);
}

.page-about .about-step__title {
  margin: 0 0 9px;
  font-size: clamp(1.06rem, 2vw, 1.28rem);
  font-weight: 800;
  line-height: 1.4;
  color: var(--cream-100);
}

.page-about .about-step__text {
  margin: 0 0 12px;
  max-width: 62ch;
  font-family: var(--font-serif);
  font-size: 0.99rem;
  line-height: 1.85;
  color: var(--text-dim);
}

/* ---------- 折叠区 ---------- */
.page-about .about-step__fold {
  border-top: 1px solid var(--line-soft);
}

.page-about .about-step__trigger {
  display: flex;
  width: 100%;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 10px 0;
  background: none;
  border: 0;
  color: var(--amber-300);
  font-family: var(--font-sans);
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  text-align: left;
  cursor: pointer;
  transition: color 0.25s var(--ease);
}

.page-about .about-step__trigger:hover,
.page-about .about-step__trigger:focus-visible {
  color: var(--amber-500);
}

.page-about .about-step__mark {
  flex: none;
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line-amber);
  font-family: var(--font-mono);
  font-size: 0.86rem;
  line-height: 1;
  transition: transform 0.3s var(--ease), background 0.3s var(--ease), color 0.3s var(--ease);
}

.page-about .about-step__trigger[aria-expanded="true"] .about-step__mark,
.page-about .about-step__trigger[data-open] .about-step__mark {
  transform: rotate(45deg);
  background: var(--amber-500);
  border-color: var(--amber-500);
  color: var(--ink-950);
}

.page-about .about-step__body {
  padding: 2px 0 8px;
  font-family: var(--font-serif);
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--text-mute);
}

.page-about .about-step__body ul {
  margin: 0;
  padding-left: 1.1em;
}

.page-about .about-step__body li {
  margin-bottom: 7px;
}

.page-about .about-step__body li:last-child {
  margin-bottom: 0;
}

/* ---------- 团队 ---------- */
.page-about .about-team__layout {
  display: grid;
  gap: clamp(24px, 3.8vw, 46px);
}

.page-about .about-team__media {
  margin: 0;
  padding: 10px;
  border: 1px solid var(--line);
  background: var(--surface-2);
}

.page-about .about-team__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  clip-path: polygon(var(--about-cut) 0, 100% 0, 100% calc(100% - var(--about-cut)), calc(100% - var(--about-cut)) 100%, 0 100%, 0 var(--about-cut));
}

.page-about .about-team__body h2 {
  margin: 12px 0 14px;
  font-size: clamp(1.58rem, 3.6vw, 2.4rem);
  font-weight: 900;
  line-height: 1.16;
  letter-spacing: -0.012em;
  color: var(--cream-100);
}

.page-about .about-team__lede {
  margin: 0;
  max-width: 60ch;
  font-family: var(--font-serif);
  font-size: clamp(1rem, 1.35vw, 1.06rem);
  line-height: 1.85;
  color: var(--text-dim);
}

.page-about .about-centers {
  list-style: none;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding: 0;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
}

.page-about .about-center {
  background: var(--ink-950);
  padding: 17px 17px 19px;
}

.page-about .about-center__idx {
  display: block;
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: var(--amber-500);
}

.page-about .about-center h3 {
  margin: 9px 0 7px;
  font-size: 1.02rem;
  font-weight: 800;
  color: var(--cream-100);
}

.page-about .about-center p {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 0.93rem;
  line-height: 1.78;
  color: var(--text-mute);
}

/* ---------- 档案体系 ---------- */
.page-about .about-archive__layout {
  display: grid;
  gap: clamp(22px, 3.2vw, 40px);
}

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

.page-about .about-archive__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding: 16px 6px;
  border-bottom: 1px solid var(--line-soft);
  transition: background 0.28s var(--ease);
}

.page-about .about-archive__item:first-child {
  border-top: 1px solid var(--line-soft);
}

.page-about .about-archive__item:hover {
  background: rgba(226, 162, 60, 0.06);
}

.page-about .about-archive__idx {
  padding-top: 4px;
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  color: var(--amber-500);
}

.page-about .about-archive__item h3 {
  margin: 0 0 7px;
  font-size: 1.02rem;
  font-weight: 800;
  color: var(--cream-100);
}

.page-about .about-archive__item p {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 0.94rem;
  line-height: 1.8;
  color: var(--text-mute);
}

.page-about .about-archive__panel {
  padding: var(--about-pad);
  border: 1px solid var(--line);
  background: linear-gradient(160deg, rgba(36, 52, 92, 0.7), rgba(11, 18, 35, 0.9));
  clip-path: polygon(0 0, 100% 0, 100% 100%, var(--about-cut) 100%, 0 calc(100% - var(--about-cut)));
}

.page-about .about-archive__panel-label {
  margin: 0 0 16px;
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  color: var(--amber-500);
}

.page-about .about-archive__figures {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 16px;
}

.page-about .about-archive__figure {
  display: block;
  font-size: clamp(1.5rem, 3.6vw, 2.1rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--cream-100);
}

.page-about .about-archive__figure-label {
  display: block;
  margin-top: 6px;
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--text-mute);
}

.page-about .about-archive__panel-note {
  margin: 20px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--line-soft);
  font-family: var(--font-serif);
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--text-dim);
}

/* ---------- 合作与荣誉 ---------- */
.page-about .about-partners__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
}

.page-about .about-partner {
  background: var(--ink-950);
  padding: clamp(20px, 2.8vw, 30px);
}

.page-about .about-partner__num {
  display: block;
  font-size: clamp(1.5rem, 3.6vw, 2.05rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--amber-300);
}

.page-about .about-partner h3 {
  margin: 12px 0 8px;
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--cream-100);
}

.page-about .about-partner p {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 0.94rem;
  line-height: 1.8;
  color: var(--text-mute);
}

.page-about .about-honor {
  margin-top: var(--about-gap);
  padding: clamp(20px, 2.8vw, 32px);
  border-left: 3px solid var(--amber-500);
  background: linear-gradient(90deg, rgba(226, 162, 60, 0.14), rgba(226, 162, 60, 0) 72%);
}

.page-about .about-honor h3 {
  margin: 12px 0 12px;
  font-size: clamp(1.12rem, 2.2vw, 1.36rem);
  font-weight: 800;
  line-height: 1.45;
  color: var(--cream-100);
}

.page-about .about-honor p {
  margin: 0;
  max-width: 66ch;
  font-family: var(--font-serif);
  font-size: 0.96rem;
  line-height: 1.85;
  color: var(--text-dim);
}

.page-about .about-honor__link {
  margin-top: 14px !important;
  color: var(--text-mute) !important;
}

/* ---------- 服务承诺 ---------- */
.page-about .about-promise {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
}

.page-about .about-promise__item {
  background: var(--ink-800);
  padding: clamp(20px, 2.8vw, 30px);
}

.page-about .about-promise__num {
  display: block;
  font-size: clamp(1.5rem, 3.6vw, 2.05rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--amber-500);
}

.page-about .about-promise__item h3 {
  margin: 12px 0 8px;
  font-size: 1.02rem;
  font-weight: 800;
  color: var(--cream-100);
}

.page-about .about-promise__item p {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 0.93rem;
  line-height: 1.8;
  color: var(--text-dim);
}

/* ---------- 结尾引导 ---------- */
.page-about .about-cta-section {
  border-top: 1px solid var(--line-amber);
  background: radial-gradient(120% 120% at 8% 0%, rgba(36, 52, 92, 0.65) 0%, rgba(11, 18, 35, 0) 62%);
}

.page-about .about-cta {
  display: grid;
  gap: clamp(22px, 3vw, 36px);
  padding: clamp(24px, 3.6vw, 44px);
  border: 1px solid var(--line);
  background: var(--surface);
}

.page-about .about-cta__copy h2 {
  margin: 0 0 12px;
  font-size: clamp(1.4rem, 3vw, 2.06rem);
  font-weight: 900;
  line-height: 1.2;
  color: var(--cream-100);
}

.page-about .about-cta__copy p {
  margin: 0;
  max-width: 62ch;
  font-family: var(--font-serif);
  font-size: 0.98rem;
  line-height: 1.85;
  color: var(--text-dim);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-content: center;
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

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

@media (min-width: 760px) {
  .page-about .about-promise {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-cta {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 0.9fr);
    align-items: center;
  }

  .page-about .about-cta__actions {
    justify-content: flex-end;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
    align-items: center;
  }

  .page-about .about-archive__layout {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
    align-items: start;
  }
}

@media (min-width: 980px) {
  .page-about .about-timeline__layout {
    grid-template-columns: 236px minmax(0, 1fr);
    align-items: start;
    gap: clamp(30px, 4vw, 56px);
  }

  .page-about .about-timeline__aside {
    position: sticky;
    top: calc(var(--bar-h) + 24px);
  }

  .page-about .about-team__layout {
    grid-template-columns: minmax(0, 0.86fr) minmax(0, 1.14fr);
    align-items: start;
  }
}
<<<END>>>