.page-about {
  background: var(--cream);
  color: var(--ink);
  font-family: var(--font-body);
  overflow-x: hidden;
}

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

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: calc(var(--head-h) + clamp(26px, 5vw, 58px)) 0 clamp(38px, 6vw, 76px);
  color: var(--cream);
  background:
    radial-gradient(120% 80% at 82% -10%, rgba(201, 162, 75, 0.16) 0%, rgba(11, 27, 50, 0) 58%),
    radial-gradient(90% 70% at 10% 100%, rgba(146, 164, 184, 0.18) 0%, rgba(11, 27, 50, 0) 62%),
    linear-gradient(168deg, #16304f 0%, var(--indigo) 46%, #07131f 100%);
  overflow: hidden;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 1px;
  background: linear-gradient(90deg, rgba(201, 162, 75, 0), rgba(201, 162, 75, 0.7), rgba(201, 162, 75, 0));
}

.page-about .about-hero .crumb {
  color: var(--cloud);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
}

.page-about .about-hero .crumb a {
  color: var(--cream);
  text-decoration: none;
}

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

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(26px, 5vw, 54px);
  margin-top: clamp(22px, 4vw, 40px);
}

.page-about .about-hero h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 5.2vw, 58px);
  line-height: 1.1;
  letter-spacing: -0.015em;
  margin: 14px 0 18px;
  max-width: 15ch;
}

.page-about .about-hero .lede {
  max-width: 40ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: rgba(244, 239, 229, 0.86);
}

.page-about .about-hero__meta {
  display: grid;
  gap: 14px;
  margin-top: clamp(22px, 4vw, 34px);
  padding-top: 18px;
  border-top: 1px solid var(--line-light);
}

.page-about .about-hero__meta-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-about .about-hero__meta-k {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--cloud);
}

.page-about .about-hero__meta-v {
  font-size: 14px;
  line-height: 1.5;
  color: var(--cream);
}

.page-about .about-hero__media {
  margin: 0;
  border: 1px solid var(--line-light);
  border-radius: var(--r-md);
  overflow: hidden;
  background: var(--indigo-2);
}

.page-about .about-hero__media img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 起点与定位 ---------- */
.page-about .about-lead {
  padding: clamp(40px, 7vw, 88px) 0;
  background: var(--cream);
}

.page-about .about-lead__grid {
  display: grid;
  gap: clamp(22px, 4vw, 48px);
}

.page-about .about-lead__aside {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.page-about .about-vert {
  writing-mode: vertical-rl;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.32em;
  color: var(--cloud);
  margin: 0;
}

.page-about .about-lead__rule {
  display: block;
  width: 1px;
  align-self: stretch;
  min-height: 72px;
  background: linear-gradient(180deg, var(--gold), rgba(201, 162, 75, 0));
}

.page-about .about-lead__code {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--ink-soft);
  padding-top: 2px;
}

.page-about .about-lead__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 3.2vw, 36px);
  line-height: 1.24;
  margin: 0 0 18px;
  color: var(--indigo);
}

.page-about .about-lead__body p {
  margin: 0 0 1em;
  font-size: 16px;
  line-height: 1.78;
  color: var(--ink-soft);
}

.page-about .about-lead__body p:first-of-type {
  color: var(--ink);
}

/* ---------- 时间线 ---------- */
.page-about .about-timeline {
  padding: clamp(36px, 6vw, 76px) 0 clamp(40px, 6vw, 72px);
  background: linear-gradient(180deg, var(--cream) 0%, var(--sand) 100%);
}

.page-about .about-timeline .section-head {
  margin-bottom: clamp(20px, 3vw, 34px);
}

.page-about .timeline {
  position: relative;
  display: flex;
  flex-direction: column;
}

.page-about .timeline__item {
  display: grid;
  gap: 8px;
  padding: clamp(18px, 3vw, 28px) 0;
  border-top: 1px solid var(--line);
  position: relative;
}

.page-about .timeline__item::before {
  content: "";
  position: absolute;
  top: -4px;
  left: 0;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 3px rgba(201, 162, 75, 0.18);
}

.page-about .timeline__item:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 6px;
}

.page-about .timeline__year {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(32px, 5.4vw, 50px);
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--indigo);
  transition: color 0.25s var(--ease);
}

.page-about .timeline__item:hover .timeline__year,
.page-about .timeline__item:focus-within .timeline__year {
  color: var(--orange);
}

.page-about .timeline__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  line-height: 1.4;
  margin: 0 0 8px;
  color: var(--ink);
}

.page-about .timeline__desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.74;
  color: var(--ink-soft);
  max-width: 52ch;
}

.page-about .timeline__note {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  letter-spacing: 0.02em;
  color: var(--indigo-2);
  padding-left: 12px;
  border-left: 2px solid rgba(201, 162, 75, 0.55);
}

.page-about .timeline__figure {
  margin: clamp(14px, 2.4vw, 24px) 0;
  padding: clamp(12px, 2vw, 18px);
  background: rgba(255, 255, 255, 0.5);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
}

.page-about .timeline__figure img {
  width: 100%;
  height: auto;
  border-radius: var(--r-sm);
  object-fit: cover;
}

.page-about .timeline__caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.03em;
  line-height: 1.7;
  color: var(--ink-soft);
}

/* ---------- 数据带 ---------- */
.page-about .about-stats {
  padding: clamp(30px, 5vw, 56px) 0;
  background: var(--indigo-2);
  color: var(--cream);
  border-top: 1px solid rgba(201, 162, 75, 0.35);
  border-bottom: 1px solid rgba(201, 162, 75, 0.2);
}

.page-about .about-stats__grid {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
}

.page-about .about-stats__item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-left: 16px;
  border-left: 2px solid var(--gold);
}

.page-about .about-stats__num {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 4.4vw, 44px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--cream);
}

.page-about .about-stats__label {
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--cloud);
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  padding: clamp(44px, 7vw, 92px) 0;
  background:
    radial-gradient(90% 60% at 90% 0%, rgba(201, 162, 75, 0.12) 0%, rgba(11, 27, 50, 0) 60%),
    var(--indigo);
  color: var(--cream);
}

.page-about .about-team__grid {
  display: grid;
  gap: clamp(26px, 4vw, 52px);
}

.page-about .about-team__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 3.4vw, 38px);
  line-height: 1.24;
  margin: 12px 0 16px;
  color: var(--cream);
}

.page-about .about-team__intro {
  margin: 0 0 clamp(20px, 3vw, 30px);
  font-size: 15.5px;
  line-height: 1.8;
  color: rgba(244, 239, 229, 0.82);
  max-width: 56ch;
}

.page-about .about-team__panels {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-about .about-team .disclosure {
  border: 1px solid var(--line-light);
  border-radius: var(--r-md);
  background: rgba(255, 255, 255, 0.06);
  transition: background 0.25s var(--ease), border-color 0.25s var(--ease), transform 0.25s var(--ease);
}

.page-about .about-team .disclosure:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(201, 162, 75, 0.55);
  transform: translateY(-2px);
}

.page-about .about-team .disclosure__trigger {
  display: flex;
  width: 100%;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 15px 16px;
  background: none;
  border: 0;
  cursor: pointer;
  text-align: left;
  color: var(--cream);
  font-family: var(--font-display);
  font-size: 15.5px;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.page-about .about-team .disclosure__trigger:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
  border-radius: var(--r-sm);
}

.page-about .about-team .disclosure__icon {
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--gold);
  flex: 0 0 auto;
}

.page-about .about-team .disclosure__panel {
  padding: 0 16px 16px;
}

.page-about .about-team .disclosure__panel p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: rgba(244, 239, 229, 0.8);
}

.page-about .about-team__media {
  margin: 0;
  border: 1px solid var(--line-light);
  border-radius: var(--r-md);
  overflow: hidden;
  background: var(--indigo-2);
}

.page-about .about-team__media img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .about-team__caption {
  padding: 12px 14px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.7;
  letter-spacing: 0.02em;
  color: var(--cloud);
  border-top: 1px solid var(--line-light);
}

/* ---------- 使用场景 ---------- */
.page-about .about-scenes {
  padding: clamp(40px, 7vw, 84px) 0;
  background: var(--cream);
}

.page-about .about-scenes .section-head {
  margin-bottom: clamp(20px, 3vw, 34px);
}

.page-about .about-scenes__grid {
  display: grid;
  gap: clamp(14px, 2vw, 20px);
}

.page-about .scene {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: clamp(18px, 2.6vw, 26px);
  background: #fff;
  border: 1px solid var(--line);
  border-left: 3px solid var(--gold);
  border-radius: var(--r-sm);
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), border-left-color 0.25s var(--ease);
}

.page-about .scene:hover,
.page-about .scene:focus-within {
  transform: translateY(-3px);
  box-shadow: 0 14px 30px -20px rgba(11, 27, 50, 0.55);
  border-left-color: var(--orange);
}

.page-about .scene__num {
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--cloud);
}

.page-about .scene__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  line-height: 1.45;
  margin: 0;
  color: var(--indigo);
}

.page-about .scene__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.page-about .scene__link {
  margin-top: auto;
  padding-top: 10px;
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--indigo-2);
  text-decoration: none;
  border-bottom: 1px solid var(--gold);
}

.page-about .scene__link:hover,
.page-about .scene__link:focus-visible {
  color: var(--orange);
  border-bottom-color: var(--orange);
}

.page-about .scene__link:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
}

/* ---------- 长期准则 ---------- */
.page-about .about-principles {
  padding: clamp(40px, 6vw, 80px) 0;
  background: linear-gradient(160deg, var(--sand) 0%, #efe6d6 62%, var(--cream) 100%);
}

.page-about .about-principles__head {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-bottom: clamp(16px, 2.4vw, 24px);
  border-bottom: 1px solid var(--line);
  margin-bottom: clamp(18px, 2.6vw, 28px);
}

.page-about .about-principles__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(22px, 3.2vw, 34px);
  line-height: 1.26;
  margin: 0;
  color: var(--indigo);
}

.page-about .about-principles__note {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
}

.page-about .about-principles__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(14px, 2vw, 22px);
}

.page-about .principle {
  padding: 16px 0 0;
  border-top: 1px solid rgba(16, 24, 32, 0.14);
}

.page-about .principle__title {
  position: relative;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  margin: 0 0 8px;
  padding-left: 14px;
  color: var(--ink);
}

.page-about .principle__title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.5em;
  width: 6px;
  height: 6px;
  background: var(--gold);
  transform: rotate(45deg);
}

.page-about .principle__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.76;
  color: var(--ink-soft);
}

/* ---------- 收尾 ---------- */
.page-about .about-cta {
  padding: clamp(36px, 6vw, 72px) 0 clamp(44px, 7vw, 82px);
  background: var(--cream);
}

.page-about .about-cta__inner {
  display: flex;
  flex-direction: column;
  gap: clamp(18px, 3vw, 30px);
  padding: clamp(22px, 3.4vw, 38px);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background:
    radial-gradient(80% 120% at 100% 0%, rgba(201, 162, 75, 0.16) 0%, rgba(244, 239, 229, 0) 60%),
    #fff;
}

.page-about .about-cta__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(21px, 3vw, 30px);
  line-height: 1.3;
  margin: 0 0 10px;
  color: var(--indigo);
}

.page-about .about-cta__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--ink-soft);
  max-width: 46ch;
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .about-cta__actions .btn:focus-visible {
  outline: 2px solid var(--indigo);
  outline-offset: 3px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .about-hero__meta {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }

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

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

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

  .page-about .about-lead__aside {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .page-about .about-lead__rule {
    width: 60px;
    min-height: 1px;
    height: 1px;
    background: linear-gradient(90deg, var(--gold), rgba(201, 162, 75, 0));
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: center;
  }

  .page-about .about-hero h1 {
    font-size: clamp(38px, 4.2vw, 58px);
  }

  .page-about .about-lead__grid {
    grid-template-columns: minmax(0, 2.4fr) minmax(0, 8fr);
    align-items: start;
  }

  .page-about .timeline__item {
    grid-template-columns: 170px minmax(0, 1fr);
    gap: clamp(20px, 4vw, 52px);
    align-items: start;
  }

  .page-about .timeline__figure {
    margin-left: 170px;
  }

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }

  .page-about .about-team__media {
    position: sticky;
    top: calc(var(--head-h) + 28px);
  }

  .page-about .about-principles__head {
    flex-direction: row;
    align-items: baseline;
    justify-content: space-between;
    gap: 24px;
  }

  .page-about .about-cta__inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 36px;
  }

  .page-about .about-cta__actions {
    flex: 0 0 auto;
    justify-content: flex-end;
  }
}

@media (min-width: 900px) and (hover: hover) {
  .page-about .timeline__note {
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    margin-top: 0;
    transform: translateY(-4px);
    transition: max-height 0.35s var(--ease), opacity 0.3s var(--ease), margin-top 0.3s var(--ease), transform 0.3s var(--ease);
  }

  .page-about .timeline__item:hover .timeline__note,
  .page-about .timeline__item:focus-within .timeline__note,
  .page-about .timeline__item:focus .timeline__note {
    max-height: 200px;
    opacity: 1;
    margin-top: 10px;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .scene,
  .page-about .about-team .disclosure,
  .page-about .timeline__year,
  .page-about .timeline__note {
    transition: none;
  }
}
<<<END>>>