.page-about {
  --about-line: rgba(16, 24, 32, .14);
  --about-line-inv: rgba(251, 248, 242, .22);
}

/* ---------- 面包屑 ---------- */
.page-about .breadcrumb {
  padding-top: clamp(1.1rem, 3vw, 1.8rem);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(1.6rem, 5vw, 3rem) 0 clamp(2rem, 5vw, 3.4rem);
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: -30% -20% auto auto;
  width: min(760px, 92vw);
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  background:
    radial-gradient(circle at 34% 38%, rgba(46, 230, 214, .22), transparent 58%),
    radial-gradient(circle at 70% 66%, rgba(30, 111, 159, .18), transparent 62%);
  pointer-events: none;
  z-index: 0;
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(1.6rem, 4vw, 2.6rem);
  align-items: end;
}

.page-about .about-hero__title {
  margin: .5rem 0 0;
  font-family: var(--font-display);
  font-size: clamp(2.15rem, 8.2vw, 4.35rem);
  line-height: 1.08;
  letter-spacing: -.02em;
  font-weight: 800;
  color: var(--deep);
}

.page-about .about-hero__lede {
  margin: 1.1rem 0 0;
  max-width: 38ch;
  font-size: clamp(1rem, 2.4vw, 1.075rem);
  line-height: 1.9;
  color: var(--ink-soft);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
  margin-top: 1.5rem;
}

.page-about .about-hero__media {
  margin: 0;
  aspect-ratio: 14 / 9;
  border: 1px solid var(--rule);
  border-radius: var(--r-md);
  overflow: hidden;
  box-shadow: var(--shadow-2);
}

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

.page-about .about-hero__media .media-frame__cap {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
}

.page-about .about-hero__note {
  display: none;
}

/* ---------- 概况数字 ---------- */
.page-about .about-figures {
  position: relative;
  background: var(--deep);
  color: var(--paper);
  border-top: 3px solid var(--coral);
}

.page-about .about-figures__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

.page-about .about-figure {
  padding: 1.35rem 0;
  border-bottom: 1px solid var(--about-line-inv);
  display: flex;
  flex-direction: column;
  gap: .3rem;
}

.page-about .about-figure:last-child {
  border-bottom: 0;
}

.page-about .about-figure__num {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 5.6vw, 2.1rem);
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--aqua);
}

.page-about .about-figure__label {
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .05em;
  color: rgba(251, 248, 242, .72);
}

/* ---------- 定位 ---------- */
.page-about .about-position {
  gap: clamp(1.8rem, 4vw, 3rem);
  align-items: start;
}

.page-about .about-position__caption {
  margin: 0 0 .9rem;
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .1em;
  color: var(--dusk);
  text-transform: uppercase;
}

.page-about .about-position__audience {
  display: grid;
  gap: .9rem;
}

.page-about .about-audience {
  position: relative;
  border-left: 3px solid var(--coral);
}

.page-about .about-audience:nth-child(3) {
  border-left-color: var(--tide);
}

.page-about .about-audience:nth-child(4) {
  border-left-color: var(--kelp);
}

.page-about .about-audience .card__meta {
  font-family: var(--font-mono);
  font-size: .74rem;
  color: var(--dusk);
}

/* ---------- 时间轴 ---------- */
.page-about .about-timeline {
  background: var(--paper);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}

.page-about .about-timeline__head {
  max-width: 62ch;
}

.page-about .about-filter {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .5rem;
  margin: 1.6rem 0 2rem;
}

.page-about .tl {
  list-style: none;
  margin: 0;
  padding: 0 0 0 1.6rem;
  position: relative;
}

.page-about .tl::before {
  content: "";
  position: absolute;
  left: 5px;
  top: .55rem;
  bottom: .6rem;
  width: 1px;
  background: linear-gradient(180deg, var(--coral), var(--tide) 55%, var(--aqua));
  opacity: .55;
}

.page-about .tl__item {
  position: relative;
  padding: 0 0 2.1rem 0;
}

.page-about .tl__item:last-child {
  padding-bottom: .2rem;
}

.page-about .tl__dot {
  position: absolute;
  left: -1.6rem;
  top: .45rem;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--paper);
  border: 2px solid var(--coral);
  box-shadow: 0 0 0 4px rgba(255, 107, 69, .12);
}

.page-about .tl__year {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .12em;
  color: var(--coral);
  text-transform: uppercase;
}

.page-about .tl__title {
  margin: .35rem 0 .5rem;
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 4vw, 1.42rem);
  font-weight: 700;
  color: var(--deep);
  line-height: 1.35;
}

.page-about .tl__text {
  margin: 0;
  max-width: 60ch;
  font-size: .95rem;
  line-height: 1.85;
  color: var(--ink-soft);
}

.page-about .tl__more {
  margin-top: .7rem;
  border-top: 1px dashed var(--about-line);
  padding-top: .6rem;
}

.page-about .tl__more summary {
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .06em;
  color: var(--tide);
}

.page-about .tl__more summary::marker {
  color: var(--coral);
}

.page-about .tl__more p {
  margin: .6rem 0 0;
  max-width: 58ch;
  font-size: .92rem;
  line-height: 1.85;
  color: var(--dusk);
}

/* ---------- 团队 ---------- */
.page-about .about-team__head {
  max-width: 62ch;
}

.page-about .about-team__grid {
  display: grid;
  gap: clamp(1.4rem, 4vw, 2.4rem);
  align-items: start;
}

.page-about .about-team__media {
  margin: 0;
  aspect-ratio: 10 / 7;
  border: 1px solid var(--rule);
  border-radius: var(--r-md);
  overflow: hidden;
  box-shadow: var(--shadow-1);
}

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

.page-about .about-roles {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .9rem;
}

.page-about .about-role {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  align-items: start;
  padding: .95rem 1.1rem;
  background: rgba(251, 248, 242, .8);
  border: 1px solid var(--rule);
  border-radius: var(--r-sm);
}

.page-about .about-role__num {
  font-family: var(--font-display);
  font-size: 1.65rem;
  font-weight: 800;
  line-height: 1;
  color: var(--coral);
  min-width: 2.2ch;
}

.page-about .about-role__name {
  margin: 0 0 .3rem;
  font-family: var(--font-display);
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--deep);
}

.page-about .about-role p {
  margin: 0;
  font-size: .9rem;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-about .about-team__note {
  margin: 1.6rem 0 0;
  padding: .95rem 1.15rem;
  border-left: 3px solid var(--aqua);
  background: var(--paper);
  font-size: .92rem;
  line-height: 1.85;
  color: var(--ink-soft);
}

/* ---------- 合作与资质 ---------- */
.page-about .about-creds {
  display: grid;
  gap: clamp(1.4rem, 4vw, 2.6rem);
  align-items: start;
}

.page-about .about-creds__tags {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin-top: 1.3rem;
}

.page-about .about-creds__media {
  margin: 0;
  aspect-ratio: 10 / 6;
  border: 1px solid var(--rule);
  border-radius: var(--r-md);
  overflow: hidden;
  background: linear-gradient(155deg, var(--deep) 0%, var(--deep-2) 100%);
}

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

/* ---------- 回访体验 ---------- */
.page-about .about-revisit {
  background: var(--paper);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}

.page-about .about-revisit__head {
  max-width: 62ch;
}

.page-about .about-revisit__grid {
  display: grid;
  gap: 1rem;
}

.page-about .about-reason {
  padding: 1.25rem 1.3rem 1.35rem;
  background: rgba(251, 248, 242, .88);
  border: 1px solid var(--rule);
  border-top: 3px solid var(--coral);
  border-radius: 0 0 var(--r-sm) var(--r-sm);
  box-shadow: var(--shadow-1);
}

.page-about .about-reason--aqua {
  border-top-color: var(--aqua);
}

.page-about .about-reason--tide {
  border-top-color: var(--tide);
}

.page-about .about-reason--kelp {
  border-top-color: var(--kelp);
}

.page-about .about-reason h3 {
  margin: 0 0 .55rem;
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--deep);
}

.page-about .about-reason p {
  margin: 0;
  font-size: .93rem;
  line-height: 1.85;
  color: var(--ink-soft);
}

.page-about .about-revisit__foot {
  margin: 1.8rem 0 0;
  max-width: 66ch;
  font-size: .92rem;
  line-height: 1.85;
  color: var(--dusk);
}

/* ---------- 收尾 ---------- */
.page-about .about-cta {
  display: grid;
  gap: 1.3rem;
  align-items: center;
}

.page-about .about-cta__title {
  margin: 0 0 .6rem;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 4.4vw, 1.85rem);
  font-weight: 800;
  color: var(--paper);
}

.page-about .about-cta__text p {
  margin: 0;
  max-width: 56ch;
  font-size: .95rem;
  line-height: 1.85;
  color: rgba(251, 248, 242, .78);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
}

.page-about .about-cta__ghost {
  color: var(--paper);
  border-color: rgba(251, 248, 242, .45);
}

.page-about .about-cta__ghost:hover,
.page-about .about-cta__ghost:focus-visible {
  background: rgba(251, 248, 242, .12);
  color: var(--paper);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .about-figures__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0 2rem;
  }

  .page-about .about-figure:nth-last-child(2) {
    border-bottom: 0;
  }

  .page-about .about-revisit__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.1rem;
  }
}

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

  .page-about .about-hero__note {
    display: block;
    position: absolute;
    left: calc(50% - 592px);
    top: 3.2rem;
    z-index: 2;
  }

  .page-about .about-figures__grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 0 2.4rem;
  }

  .page-about .about-figure {
    border-bottom: 0;
    border-right: 1px solid var(--about-line-inv);
    padding: 1.7rem 0;
  }

  .page-about .about-figure:last-child {
    border-right: 0;
  }

  .page-about .about-position {
    grid-template-columns: 5fr 7fr;
  }

  .page-about .about-team__grid {
    grid-template-columns: 5fr 7fr;
  }

  .page-about .about-team__media {
    position: sticky;
    top: 6.5rem;
  }

  .page-about .about-creds {
    grid-template-columns: 6fr 6fr;
    align-items: center;
  }

  .page-about .about-revisit__grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-about .about-reason:nth-child(2) {
    transform: translateY(14px);
  }

  .page-about .about-reason:nth-child(4) {
    transform: translateY(14px);
  }

  .page-about .about-cta {
    grid-template-columns: 7fr 5fr;
    padding: clamp(1.8rem, 4vw, 2.8rem);
  }

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

  .page-about .tl {
    padding-left: 2.2rem;
  }

  .page-about .tl__dot {
    left: -2.2rem;
  }
}

@media (min-width: 1180px) {
  .page-about .about-hero__note {
    left: calc(50% - 590px);
  }
}
<<<END>>>