.page-about {
  --about-pad: clamp(28px, 6vw, 72px);
  background: var(--cloud);
  color: var(--ink);
  overflow-x: hidden;
}

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

.page-about .about-crumb {
  padding-top: 18px;
  padding-bottom: 4px;
}

.page-about h2 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.7rem, 4.4vw, 2.6rem);
  line-height: 1.22;
  letter-spacing: .03em;
  color: var(--space);
}

.page-about .eyebrow {
  color: var(--jade-deep);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: 24px 0 56px;
  background:
    radial-gradient(120% 90% at 100% 0%, rgba(245, 166, 35, .18), transparent 62%),
    radial-gradient(80% 70% at 0% 100%, rgba(60, 185, 160, .12), transparent 60%),
    var(--cloud);
}

.page-about .about-hero__grid {
  display: grid;
  gap: 32px;
  align-items: center;
}

.page-about .about-hero__eyebrow {
  letter-spacing: .18em;
  color: var(--jade-deep);
}

.page-about .about-hero__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.6rem, 9vw, 5rem);
  line-height: 1.02;
  letter-spacing: .04em;
  color: var(--space);
}

.page-about .about-hero__title span {
  color: var(--gold);
  display: inline-block;
}

.page-about .about-hero__lede {
  margin: 22px 0 0;
  max-width: 33em;
  font-size: 1.02rem;
  line-height: 1.85;
  color: #2c3b4e;
}

.page-about .about-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 30px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-hero__facts li {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding-left: 12px;
  border-left: 2px solid var(--gold);
}

.page-about .about-hero__facts .mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1.1;
  color: var(--space);
}

.page-about .about-hero__facts em {
  font-style: normal;
  font-size: .78rem;
  letter-spacing: .1em;
  color: var(--jade-deep);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.page-about .about-hero__visual {
  position: relative;
  margin: 0;
  border: 1px solid var(--mist);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--space);
  box-shadow: var(--shadow);
}

.page-about .about-hero__visual img {
  display: block;
  width: 100%;
  object-fit: cover;
}

.page-about .about-hero__cap {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding: 26px 16px 12px;
  background: linear-gradient(transparent, rgba(7, 17, 28, .88));
  color: var(--cloud);
  font-size: .76rem;
  letter-spacing: .08em;
}

.page-about .about-hero__cap .mono {
  font-family: var(--font-mono);
  color: var(--gold);
}

/* ---------- 缘起 ---------- */
.page-about .about-origin {
  padding: var(--about-pad) 0;
  border-top: 1px solid var(--mist);
}

.page-about .about-origin__grid {
  display: grid;
  gap: 28px;
}

.page-about .about-origin__text p {
  margin: 16px 0 0;
  font-size: 1rem;
  line-height: 1.9;
  color: #33445a;
}

.page-about .about-origin__figure {
  margin: 0;
  border: 1px solid var(--mist);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--space-2);
}

.page-about .about-origin__figure img {
  display: block;
  width: 100%;
  object-fit: cover;
}

.page-about .about-origin__figure figcaption {
  padding: 12px 16px;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .08em;
  color: var(--space);
  background: var(--gold-soft);
}

/* ---------- 主张 ---------- */
.page-about .about-ethos {
  padding: var(--about-pad) 0;
  background: var(--space);
  color: var(--cloud);
}

.page-about .about-ethos__grid {
  display: grid;
  gap: 18px;
}

.page-about .about-ethos__rotate {
  display: inline-block;
  writing-mode: vertical-rl;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .34em;
  color: var(--gold);
}

.page-about .about-ethos h2 {
  color: var(--cloud);
}

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

.page-about .about-ethos__body p {
  margin: 18px 0 0;
  max-width: 40em;
  font-size: 1rem;
  line-height: 1.9;
  color: rgba(247, 244, 238, .82);
}

.page-about .about-ethos__link {
  display: inline-block;
  margin-top: 24px;
  color: var(--gold-soft);
}

.page-about .about-ethos__link:hover {
  color: var(--gold);
}

/* ---------- 时间线 ---------- */
.page-about .about-timeline {
  padding: var(--about-pad) 0;
  background: var(--cloud);
}

.page-about .about-timeline__head {
  max-width: 44rem;
}

.page-about .about-timeline__lede {
  margin: 14px 0 0;
  font-size: 1rem;
  line-height: 1.85;
  color: #33445a;
}

.page-about .timeline {
  margin: 36px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .timeline__item {
  position: relative;
  padding: 26px 0 26px 28px;
  border-top: 1px solid var(--mist);
}

.page-about .timeline__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 36px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gold);
  transition: box-shadow 160ms var(--ease);
}

.page-about .timeline__item::after {
  content: "";
  position: absolute;
  left: 3px;
  top: 48px;
  bottom: 0;
  width: 1px;
  background: linear-gradient(var(--gold), rgba(245, 166, 35, 0));
  opacity: .55;
}

.page-about .timeline__item:last-child::after {
  display: none;
}

.page-about .timeline__year {
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(2.4rem, 10vw, 5.5rem);
  font-weight: 600;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--space);
  transition: color 160ms var(--ease);
}

.page-about .timeline__body h3 {
  margin: 10px 0 0;
  font-family: var(--font-body);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--space);
}

.page-about .timeline__body p {
  margin: 10px 0 0;
  max-width: 42em;
  font-size: .96rem;
  line-height: 1.85;
  color: #3a4a5e;
}

.page-about .timeline__note {
  display: inline-block;
  margin-top: 12px;
  padding: 4px 10px;
  border: 1px solid var(--mist);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .1em;
  color: var(--jade-deep);
  background: rgba(60, 185, 160, .08);
  transition: border-color 160ms var(--ease), background 160ms var(--ease);
}

.page-about .timeline__item:hover::before {
  box-shadow: 0 0 0 3px rgba(60, 185, 160, .4);
}

.page-about .timeline__item:hover .timeline__year {
  color: var(--gold);
}

.page-about .timeline__item:hover .timeline__note {
  border-color: var(--gold);
  background: var(--gold-soft);
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  padding: var(--about-pad) 0;
  background: var(--space);
  color: var(--cloud);
}

.page-about .about-team__grid {
  display: grid;
  gap: 30px;
  align-items: center;
}

.page-about .about-team h2 {
  color: var(--cloud);
}

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

.page-about .about-team__intro p {
  margin: 16px 0 0;
  font-size: 1rem;
  line-height: 1.9;
  color: rgba(247, 244, 238, .82);
}

.page-about .about-team__btn {
  margin-top: 26px;
  border-color: rgba(247, 244, 238, .5);
  color: var(--cloud);
}

.page-about .about-team__btn:hover {
  border-color: var(--gold);
  color: var(--gold);
}

.page-about .about-team__figure {
  margin: 0;
  border: 1px solid rgba(216, 222, 232, .22);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--space-2);
}

.page-about .about-team__figure img {
  display: block;
  width: 100%;
  object-fit: cover;
}

.page-about .about-team__figure figcaption {
  padding: 12px 16px;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .08em;
  color: var(--gold-soft);
}

.page-about .about-team__acc {
  margin-top: 34px;
}

.page-about .about-team__acc .accordion__item {
  margin-bottom: 10px;
  border: 1px solid rgba(216, 222, 232, .22);
  border-radius: 12px;
  background: var(--space-2);
  overflow: hidden;
  transition: border-color 160ms var(--ease);
}

.page-about .about-team__acc .accordion__item:hover {
  border-color: rgba(245, 166, 35, .6);
}

.page-about .about-team__acc .accordion__item[data-open] {
  border-color: var(--gold);
}

.page-about .about-team__acc .accordion__trigger {
  display: flex;
  align-items: center;
  gap: 14px;
  width: 100%;
  padding: 16px 18px;
  border: 0;
  background: none;
  cursor: pointer;
  text-align: left;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 700;
  color: var(--cloud);
  transition: color 160ms var(--ease);
}

.page-about .about-team__acc .accordion__trigger:hover {
  color: var(--gold);
}

.page-about .about-team__idx {
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .1em;
  color: var(--gold);
}

.page-about .about-team__acc-title {
  flex: 1 1 auto;
}

.page-about .about-team__acc .accordion__panel {
  overflow: hidden;
  max-height: 0;
  transition: max-height 220ms var(--ease);
}

.page-about .about-team__acc .accordion__item[data-open] .accordion__panel {
  max-height: 640px;
}

.page-about .about-team__acc .accordion__body {
  padding: 0 18px 18px;
  font-size: .95rem;
  line-height: 1.85;
  color: rgba(247, 244, 238, .8);
}

.page-about .about-team__acc .accordion__body p {
  margin: 0;
}

/* ---------- 安全与发布 ---------- */
.page-about .about-assurance {
  padding: var(--about-pad) 0;
  background:
    linear-gradient(180deg, rgba(60, 185, 160, .07), transparent 40%),
    var(--cloud);
}

.page-about .about-assurance__grid {
  display: grid;
  gap: 32px;
}

.page-about .about-assurance__text p {
  margin: 16px 0 0;
  font-size: 1rem;
  line-height: 1.9;
  color: #33445a;
}

.page-about .about-assurance__text .text-link {
  display: inline-block;
  margin-top: 22px;
}

.page-about .about-assurance__plates {
  display: grid;
  gap: 12px;
}

.page-about .about-assurance__plates .plaque {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 18px;
  border: 1px solid var(--mist);
  border-radius: 12px;
  background: #fffdf9;
  box-shadow: 0 2px 6px rgba(14, 27, 44, .05);
  transition: border-color 160ms var(--ease), transform 160ms var(--ease);
}

.page-about .about-assurance__plates .plaque:hover {
  border-color: var(--gold);
  transform: translateY(-2px);
}

.page-about .about-assurance__plates .plaque__label {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .12em;
  color: var(--jade-deep);
}

.page-about .about-assurance__plates .plaque__value {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--space);
}

.page-about .about-assurance__plates .plaque__value.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: .01em;
}

/* ---------- 收束 ---------- */
.page-about .about-close {
  padding: var(--about-pad) 0 calc(var(--about-pad) + 12px);
  background: var(--ink);
  color: var(--cloud);
}

.page-about .about-close__inner {
  display: grid;
  gap: 30px;
}

.page-about .about-close h2 {
  color: var(--cloud);
}

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

.page-about .about-close__text p {
  margin: 16px 0 0;
  max-width: 40em;
  font-size: 1rem;
  line-height: 1.9;
  color: rgba(247, 244, 238, .82);
}

.page-about .about-close__links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px 18px;
}

.page-about .about-close__home {
  color: var(--gold-soft);
}

.page-about .about-close__home:hover {
  color: var(--gold);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-about .about-assurance__plates {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-assurance__plates .plaque:first-child,
  .page-about .about-assurance__plates .plaque:nth-child(4) {
    grid-column: span 2;
  }
}

@media (min-width: 860px) {
  .page-about .about-origin__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    gap: 44px;
    align-items: start;
  }

  .page-about .about-ethos__grid {
    grid-template-columns: 58px minmax(0, 760px);
    gap: 52px;
    align-items: start;
  }

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    gap: 48px;
  }

  .page-about .about-assurance__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, .85fr);
    gap: 56px;
    align-items: start;
  }

  .page-about .about-close__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
    gap: 48px;
  }
}

@media (min-width: 1000px) {
  .page-about .about-hero {
    padding: 40px 0 80px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
    gap: 56px;
  }

  .page-about .about-hero__visual {
    transform: translateY(-8px);
  }

  .page-about .timeline__item {
    display: grid;
    grid-template-columns: minmax(150px, 230px) minmax(0, 1fr);
    column-gap: 52px;
    padding: 38px 0 38px 28px;
    align-items: start;
  }

  .page-about .timeline__item::before {
    top: 52px;
  }

  .page-about .timeline__item::after {
    top: 64px;
  }

  .page-about .timeline__body h3 {
    margin-top: 14px;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-about .about-assurance__plates .plaque:hover {
    transform: none;
  }
}
<<<END>>>