.page-about {
  --about-hair: rgba(169, 136, 76, .45);
  --about-jade-soft: rgba(35, 209, 139, .22);
  --about-gold-soft: rgba(240, 206, 142, .14);
  padding-block: 32px 96px;
  color: var(--ice);
}
.page-about .breadcrumb {
  margin-bottom: 36px;
}
.page-about .eyebrow {
  color: var(--gold);
  font-family: var(--font-mono);
  letter-spacing: .08em;
}
.page-about .about-h2 {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 4.2vw, 2.1rem);
  font-weight: 900;
  line-height: 1.22;
  letter-spacing: -.01em;
  color: var(--ice);
}
.page-about p {
  margin: 0 0 1.2em;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ice);
}
.page-about p:last-child {
  margin-bottom: 0;
}

/* 首屏 */
.page-about .about-hero {
  display: grid;
  gap: 40px;
  padding-block: 8px 88px;
  align-items: center;
}
.page-about .about-hero__title {
  margin: 12px 0 20px;
  font-family: var(--font-display);
  font-size: clamp(2rem, 8vw, 3.4rem);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -.02em;
  color: var(--ice);
}
.page-about .about-hero__lead {
  max-width: 56ch;
  font-size: 17px;
  line-height: 1.85;
  color: var(--mist);
}
.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}
.page-about .about-prism {
  display: grid;
  justify-items: center;
  gap: 18px;
  margin: 0;
  padding: 28px 0;
}
.page-about .about-prism__gem {
  width: min(100%, 330px);
  aspect-ratio: 1 / 1;
  background:
    radial-gradient(circle at 32% 26%, rgba(240, 206, 142, .85), transparent 42%),
    conic-gradient(from 205deg, var(--sapphire), var(--jade) 26%, var(--gold) 48%, var(--deep) 72%, var(--sapphire));
  clip-path: polygon(50% 0%, 88% 26%, 100% 62%, 72% 100%, 28% 100%, 0% 62%, 12% 26%);
  filter: drop-shadow(0 26px 60px rgba(47, 91, 255, .42));
  opacity: .94;
}
.page-about .about-prism figcaption {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--mist);
  text-align: center;
}

/* 品牌主张 */
.page-about .about-claim {
  padding-block: 0 88px;
  border-top: 2px solid var(--about-hair);
  padding-top: 56px;
}
.page-about .about-claim__body {
  max-width: 66ch;
}
.page-about .about-claim__body p {
  font-size: 16.5px;
}

/* 时间线 */
.page-about .about-track {
  padding-block: 0 88px;
}
.page-about .about-track__head {
  max-width: 60ch;
  margin-bottom: 32px;
}
.page-about .about-track__figure {
  margin: 0 0 48px;
  border: 2px solid var(--facet);
  box-shadow: var(--hard-shadow);
  background: var(--panel);
  border-radius: var(--radius);
  overflow: hidden;
}
.page-about .about-track__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}
.page-about .about-timeline {
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-about .about-timeline__item {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 8px;
  padding: 0 0 40px 26px;
  border-left: 2px solid var(--facet);
}
.page-about .about-timeline__item:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}
.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: -7px;
  top: 10px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--gold);
  border: 2px solid var(--ink);
  box-shadow: 0 0 0 3px var(--about-gold-soft);
}
.page-about .about-timeline__year {
  display: flex;
  align-items: baseline;
  gap: 10px;
}
.page-about .about-year {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 500;
  color: var(--gold);
  letter-spacing: -.01em;
}
.page-about .about-year__note {
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--mist);
}
.page-about .about-timeline__body {
  background: var(--panel);
  border: 2px solid var(--facet);
  border-radius: var(--radius);
  padding: 20px;
  transition: border-color .28s ease, box-shadow .28s ease, transform .28s ease;
}
.page-about .about-timeline__body h3 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 900;
  line-height: 1.35;
  color: var(--ice);
}
.page-about .about-timeline__body p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
  margin-bottom: .8em;
}
.page-about .about-timeline__effect {
  margin: 0;
  padding-top: 10px;
  border-top: 1px dashed var(--about-hair);
  color: var(--jade) !important;
  font-size: 14px !important;
}
.page-about .about-timeline__item:hover .about-timeline__body,
.page-about .about-timeline__item:focus-within .about-timeline__body {
  border-color: var(--gold-line);
  box-shadow: 6px 6px 0 rgba(0, 0, 0, .55);
  transform: translate(-2px, -2px);
}
.page-about .about-timeline__item:hover .about-year {
  color: var(--ice);
}

/* 覆盖数据带 */
.page-about .about-band {
  margin-block: 0 88px;
  border-top: 2px solid var(--gold-line);
  border-bottom: 2px solid var(--gold-line);
  background:
    radial-gradient(circle at 12% 18%, rgba(47, 91, 255, .34), transparent 55%),
    radial-gradient(circle at 82% 78%, rgba(35, 209, 139, .24), transparent 58%),
    linear-gradient(160deg, #0A1densify 0%, #0B1428 40%, #12224A 100%);
  background-color: var(--panel);
  padding-block: 56px;
}
.page-about .about-band__grid {
  display: grid;
  gap: 36px;
  align-items: center;
}
.page-about .about-band__copy > p {
  color: var(--mist);
  max-width: 52ch;
}
.page-about .about-stats {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 18px;
}
.page-about .about-stats__item {
  padding: 16px 14px;
  border: 2px solid var(--facet);
  border-left: 3px solid var(--jade-deep);
  border-radius: var(--radius);
  background: rgba(5, 10, 24, .55);
}
.page-about .about-stats__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 500;
  color: var(--gold);
  letter-spacing: -.01em;
}
.page-about .about-stats__label {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  line-height: 1.55;
  color: var(--mist);
}
.page-about .about-band__figure {
  margin: 0;
  border: 2px solid var(--gold-line);
  border-radius: var(--radius);
  background: var(--ink);
  overflow: hidden;
}
.page-about .about-band__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

/* 团队 */
.page-about .about-team {
  display: grid;
  gap: 32px;
  padding-block: 0 88px;
  align-items: start;
}
.page-about .about-team__figure {
  margin: 0;
  border: 2px solid var(--facet);
  border-radius: var(--radius);
  background: var(--panel);
  overflow: hidden;
  box-shadow: var(--hard-shadow);
}
.page-about .about-team__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}
.page-about .about-team__copy > p {
  color: var(--mist);
}
.page-about .about-team__facts {
  margin: 24px 0;
  display: grid;
  gap: 0;
  border-top: 2px solid var(--facet);
}
.page-about .about-team__fact {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 14px 0;
  border-bottom: 2px solid var(--facet);
}
.page-about .about-team__fact dt {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--jade);
}
.page-about .about-team__fact dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ice);
}

/* 服务准则 */
.page-about .about-rules {
  padding-block: 0 88px;
}
.page-about .about-rules__head {
  max-width: 58ch;
  margin-bottom: 28px;
}
.page-about .about-rules__head p {
  color: var(--mist);
}
.page-about .about-rules__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}
.page-about .about-rules__item {
  border: 2px solid var(--facet);
  border-radius: var(--radius);
  background: var(--panel);
}
.page-about .about-rules__item details[open] {
  border-color: var(--gold-line);
}
.page-about .about-rules__item summary {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding: 18px 18px;
  cursor: pointer;
  list-style: none;
}
.page-about .about-rules__item summary::-webkit-details-marker {
  display: none;
}
.page-about .about-rules__num {
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--gold);
  flex: none;
}
.page-about .about-rules__title {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 900;
  line-height: 1.4;
  color: var(--ice);
}
.page-about .about-rules__item summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--jade);
}
.page-about .about-rules__item details[open] summary::after {
  content: "−";
  color: var(--gold);
}
.page-about .about-rules__detail {
  padding: 0 18px 20px 18px;
  border-top: 1px dashed var(--about-hair);
  margin-top: 2px;
}
.page-about .about-rules__detail p {
  margin-top: 14px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

/* 资质与备案 */
.page-about .about-cred {
  max-width: 68ch;
  border-top: 2px solid var(--about-hair);
  padding-top: 48px;
}
.page-about .about-cred__list {
  list-style: none;
  margin: 22px 0 32px;
  padding: 0;
  display: grid;
  gap: 0;
}
.page-about .about-cred__list li {
  padding: 14px 0;
  border-bottom: 2px solid var(--facet);
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}
.page-about .about-cred__list strong {
  display: block;
  margin-bottom: 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .08em;
  color: var(--jade);
}
.page-about .about-cred__more p {
  color: var(--mist);
  font-size: 15.5px;
}
.page-about .about-cred__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 24px 0 20px;
}
.page-about .about-cred__fine {
  font-size: 14px !important;
}
.page-about .about-cred__fine a {
  color: var(--link);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.page-about .about-cred__fine a:hover {
  color: var(--gold);
}

@media (min-width: 768px) {
  .page-about .about-hero {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
    gap: 48px;
  }
  .page-about .about-band__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    gap: 48px;
  }
  .page-about .about-team {
    grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
    gap: 44px;
  }
  .page-about .about-team__fact {
    grid-template-columns: 110px minmax(0, 1fr);
    gap: 16px;
    align-items: baseline;
  }
}

@media (min-width: 1024px) {
  .page-about {
    padding-block: 40px 120px;
  }
  .page-about .about-track__figure {
    margin-bottom: 56px;
  }
  .page-about .about-timeline__item {
    grid-template-columns: 124px minmax(0, 1fr);
    column-gap: 0;
    border-left: 0;
    padding: 0 0 48px 0;
  }
  .page-about .about-timeline__item::before {
    left: calc(124px - 6px);
  }
  .page-about .about-timeline__year {
    position: sticky;
    top: 112px;
    align-self: start;
    display: block;
    text-align: right;
    padding: 6px 24px 0 0;
    border-right: 2px solid var(--facet);
  }
  .page-about .about-year {
    display: block;
    font-size: 22px;
  }
  .page-about .about-year__note {
    display: block;
    margin-top: 6px;
  }
  .page-about .about-timeline__body {
    padding: 24px 26px;
  }
  .page-about .about-band {
    padding-block: 72px;
  }
  .page-about .about-claim {
    padding-top: 64px;
  }
}

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