.page-about {
  --about-hair: rgba(53, 242, 227, 0.16);
  --about-hair-soft: rgba(168, 185, 216, 0.16);
  --about-cut: 16px;
  --about-glow: 0 18px 48px -30px rgba(53, 242, 227, 0.5);
}

.page-about .breadcrumb__sep {
  padding: 0 8px;
  color: var(--ink-2);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding-block: clamp(20px, 3vw, 36px) clamp(48px, 7vw, 96px);
}

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
  align-items: center;
}

.page-about .about-hero__lead {
  position: relative;
  isolation: isolate;
  padding: clamp(18px, 3vw, 32px);
  border-left: 1px solid var(--about-hair);
}

.page-about .about-hero__lead::after {
  content: "";
  position: absolute;
  left: -1px;
  top: 0;
  width: 2px;
  height: clamp(48px, 12%, 96px);
  background: linear-gradient(180deg, var(--cyan), transparent);
}

.page-about .about-hero__backdrop {
  position: absolute;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  opacity: 0.5;
  -webkit-mask-image: linear-gradient(155deg, rgba(0, 0, 0, 0) 6%, #000 64%);
  mask-image: linear-gradient(155deg, rgba(0, 0, 0, 0) 6%, #000 64%);
}

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

.page-about h1 {
  margin: 0.45em 0 0.4em;
  font-size: clamp(30px, 5.4vw, 60px);
  line-height: 1.14;
  letter-spacing: 0.03em;
  color: var(--white);
}

.page-about .about-hero__lead .lede {
  max-width: 40ch;
  color: var(--fog);
}

.page-about .about-hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 32px);
}

.page-about .about-stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--ink-2);
  border: 1px solid var(--ink-2);
  clip-path: polygon(
    0 0,
    100% 0,
    100% calc(100% - var(--about-cut)),
    calc(100% - var(--about-cut)) 100%,
    0 100%
  );
}

.page-about .about-stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: clamp(16px, 2.4vw, 24px);
  background: var(--ink-1);
}

.page-about .about-stat__num {
  font-size: clamp(24px, 3.6vw, 34px);
  line-height: 1.1;
  color: var(--cyan);
}

.page-about .about-stat__unit {
  margin-left: 2px;
  font-size: 0.52em;
  color: var(--fog);
}

.page-about .about-stat__label {
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--fog);
}

.page-about .about-stats__note {
  margin-top: 14px;
  font-size: 13px;
  line-height: 1.75;
  color: var(--fog);
}

/* ---------- 品牌主张 ---------- */
.page-about .about-claim__grid {
  display: grid;
  gap: clamp(20px, 3vw, 40px);
}

.page-about .about-claim__body p {
  margin: 0 0 1em;
  max-width: 42ch;
  line-height: 1.8;
  color: var(--fog);
}

.page-about .about-claim__body p:first-child {
  color: var(--white);
}

.page-about .about-claim__body p:last-child {
  margin-bottom: 0;
}

/* ---------- 发展轨迹 ---------- */
.page-about .about-path__grid {
  display: grid;
  gap: clamp(28px, 4vw, 56px);
}

.page-about .timeline {
  list-style: none;
  margin: clamp(20px, 3vw, 32px) 0 0;
  padding: 0;
  position: relative;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: linear-gradient(180deg, var(--cyan), var(--violet) 55%, var(--orange));
  opacity: 0.5;
}

.page-about .tl-item {
  position: relative;
  padding: 0 0 0 34px;
  margin-bottom: clamp(20px, 3vw, 30px);
}

.page-about .tl-item:last-child {
  margin-bottom: 0;
}

.page-about .tl-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 11px;
  height: 11px;
  transform: rotate(45deg);
  background: var(--ink-0);
  border: 1px solid var(--cyan);
  transition: background var(--t) var(--ease), box-shadow var(--t) var(--ease);
}

.page-about .tl-item:hover::before,
.page-about .tl-item:focus-within::before {
  background: var(--cyan);
  box-shadow: 0 0 0 5px rgba(53, 242, 227, 0.14);
}

.page-about .tl-year {
  display: block;
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-about .tl-title {
  margin: 6px 0 8px;
  font-size: clamp(17px, 2vw, 21px);
  color: var(--white);
  letter-spacing: 0.02em;
}

.page-about .tl-body {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--fog);
  transition: color var(--t) var(--ease);
}

.page-about .tl-item:hover .tl-body {
  color: var(--white);
}

.page-about .about-path__notes .lede {
  color: var(--white);
}

.page-about .pillars {
  list-style: none;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .pillar {
  padding: 18px 20px;
  border: 1px solid var(--about-hair-soft);
  background: linear-gradient(150deg, rgba(10, 27, 61, 0.9), rgba(5, 13, 31, 0.7));
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%);
  transition: border-color var(--t) var(--ease), transform var(--t) var(--ease);
}

.page-about .pillar:hover {
  transform: translateY(-4px);
  border-color: var(--about-hair);
}

.page-about .pillar__idx {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--violet);
}

.page-about .pillar__title {
  margin: 6px 0 6px;
  font-size: 17px;
  color: var(--white);
}

.page-about .pillar p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--fog);
}

/* ---------- 引语带 ---------- */
.page-about .about-quote {
  position: relative;
  overflow: hidden;
  padding-block: clamp(40px, 6vw, 76px);
  border-block: 1px solid var(--about-hair);
  background: linear-gradient(
    104deg,
    rgba(53, 242, 227, 0.09),
    rgba(139, 92, 246, 0.1) 55%,
    rgba(255, 106, 43, 0.08)
  );
}

.page-about .about-quote::after {
  content: "";
  position: absolute;
  right: -60px;
  top: -40%;
  width: 220px;
  height: 180%;
  transform: rotate(9deg);
  background: linear-gradient(180deg, rgba(53, 242, 227, 0.16), transparent 70%);
  pointer-events: none;
}

.page-about .about-quote__block {
  margin: 0;
  max-width: 34ch;
}

.page-about .about-quote__block p {
  margin: 0 0 16px;
  font-size: clamp(20px, 2.8vw, 30px);
  line-height: 1.5;
  letter-spacing: 0.02em;
  color: var(--white);
}

.page-about .about-quote__block footer {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--fog);
}

/* ---------- 数据能力 ---------- */
.page-about .about-data__head .lede {
  max-width: 46ch;
  color: var(--fog);
}

.page-about .about-data__strip {
  list-style: none;
  margin: clamp(24px, 4vw, 40px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--ink-2);
  border: 1px solid var(--ink-2);
}

.page-about .about-data__strip > li {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 16px;
  background: var(--ink-0);
}

.page-about .about-data__num {
  font-size: clamp(22px, 3vw, 30px);
  color: var(--cyan);
  line-height: 1.1;
}

.page-about .about-data__unit {
  margin-left: 2px;
  font-size: 0.5em;
  color: var(--fog);
}

.page-about .about-data__cap {
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--fog);
}

.page-about .about-data__cards {
  display: grid;
  gap: 14px;
  margin-top: clamp(16px, 3vw, 24px);
}

.page-about .about-data__card {
  position: relative;
  padding: clamp(18px, 2.6vw, 26px);
  border: 1px solid var(--about-hair-soft);
  background: var(--ink-1);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
  transition: transform var(--t) var(--ease), border-color var(--t) var(--ease);
}

.page-about .about-data__card:hover {
  transform: translateY(-4px);
  border-color: var(--about-hair);
}

.page-about .about-data__card h3 {
  margin: 0 0 10px;
  font-size: 18px;
  letter-spacing: 0.02em;
  color: var(--white);
}

.page-about .about-data__card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--fog);
}

/* ---------- 专家网络 ---------- */
.page-about .about-experts__grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  align-items: center;
}

.page-about .about-experts__text p {
  max-width: 40ch;
  line-height: 1.8;
  color: var(--fog);
}

.page-about .tag-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 18px 0;
  padding: 0;
}

.page-about .about-experts__visual {
  position: relative;
}

.page-about .about-experts__visual .media-frame {
  border: 1px solid var(--about-hair-soft);
}

.page-about .about-net {
  position: relative;
  z-index: 2;
  display: block;
  width: min(88%, 400px);
  height: auto;
  margin: -9% 0 0 auto;
  padding: 10px;
  background: var(--ink-1);
  border: 1px solid var(--about-hair);
  box-shadow: var(--about-glow);
}

.page-about .about-net__node circle {
  fill: var(--ink-0);
  stroke: var(--violet);
  stroke-width: 1.5;
}

.page-about .about-net__core {
  fill: var(--ink-0);
  stroke: var(--cyan);
  stroke-width: 2;
}

.page-about .about-net__pulse {
  opacity: 0.45;
}

/* ---------- 团队 ---------- */
.page-about .about-team__grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
}

.page-about .about-team__intro p {
  max-width: 40ch;
  line-height: 1.8;
  color: var(--fog);
}

.page-about .about-team__media {
  margin: clamp(20px, 3vw, 28px) 0 0;
  border: 1px solid var(--about-hair-soft);
}

.page-about .about-team__roles {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.page-about .role {
  padding: 18px 16px;
  background: var(--ink-1);
  border-top: 2px solid var(--ink-2);
  transition: border-color var(--t) var(--ease), transform var(--t) var(--ease);
}

.page-about .role:hover {
  transform: translateY(-4px);
  border-top-color: var(--cyan);
}

.page-about .role__num {
  display: block;
  font-size: clamp(24px, 3vw, 32px);
  line-height: 1;
  color: var(--cyan);
}

.page-about .role__title {
  margin: 10px 0 8px;
  font-size: 16px;
  letter-spacing: 0.02em;
  color: var(--white);
}

.page-about .role p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--fog);
}

/* ---------- 合作生态与资质 ---------- */
.page-about .about-eco__head .lede {
  max-width: 46ch;
  color: var(--fog);
}

.page-about .about-eco__grid {
  list-style: none;
  margin: clamp(24px, 4vw, 36px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.page-about .eco-card {
  padding: 20px 18px;
  border: 1px solid var(--about-hair-soft);
  border-left: 2px solid var(--violet);
  background: linear-gradient(160deg, rgba(10, 27, 61, 0.92), rgba(5, 13, 31, 0.92));
  transition: border-left-color var(--t) var(--ease), transform var(--t) var(--ease);
}

.page-about .eco-card:hover {
  transform: translateY(-4px);
  border-left-color: var(--cyan);
}

.page-about .eco-card h3 {
  margin: 0 0 8px;
  font-size: 17px;
  color: var(--white);
}

.page-about .eco-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--fog);
}

.page-about .about-eco__certs {
  margin-top: clamp(28px, 4vw, 44px);
  padding-top: clamp(20px, 3vw, 28px);
  border-top: 1px solid var(--about-hair-soft);
}

.page-about .badge-row {
  display: grid;
  gap: 10px;
  margin-top: 14px;
}

.page-about .badge {
  border: 1px solid var(--about-hair-soft);
  background: rgba(10, 27, 61, 0.7);
  padding: 13px 16px;
  transition: border-color var(--t) var(--ease);
}

.page-about .badge[open] {
  border-color: var(--about-hair);
}

.page-about .badge summary {
  display: flex;
  align-items: center;
  gap: 12px;
  list-style: none;
  cursor: pointer;
  font-size: 14px;
  letter-spacing: 0.05em;
  color: var(--white);
}

.page-about .badge summary::-webkit-details-marker {
  display: none;
}

.page-about .badge__mark {
  width: 13px;
  height: 13px;
  flex: none;
  transform: rotate(45deg);
  border: 1px solid var(--cyan);
  transition: background var(--t) var(--ease);
}

.page-about .badge[open] .badge__mark {
  background: var(--cyan);
}

.page-about .badge__body {
  margin: 10px 0 0;
  padding-left: 25px;
  font-size: 13px;
  line-height: 1.75;
  color: var(--fog);
}

/* ---------- 服务覆盖 ---------- */
.page-about .about-reach__grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
}

.page-about .about-reach__text p {
  max-width: 42ch;
  line-height: 1.8;
  color: var(--fog);
}

.page-about .about-reach__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--ink-2);
  border: 1px solid var(--ink-2);
}

.page-about .about-reach__list > li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  padding: 16px 18px;
  background: var(--ink-1);
  font-size: 14px;
  line-height: 1.7;
  color: var(--fog);
}

.page-about .about-reach__num {
  font-size: 20px;
  color: var(--cyan);
}

.page-about .about-reach__contact {
  flex-direction: column;
  align-items: flex-start !important;
  background: var(--ink-0) !important;
}

.page-about .about-reach__contact strong {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.02em;
  color: var(--white);
  word-break: break-all;
}

.page-about .about-reach__note {
  font-size: 13px;
  line-height: 1.7;
  color: var(--fog);
}

/* ---------- 收尾 ---------- */
.page-about .about-cta {
  padding-block: clamp(40px, 6vw, 72px);
}

.page-about .about-cta__inner {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
  padding: clamp(24px, 4vw, 44px);
  border: 1px solid var(--about-hair);
  background:
    linear-gradient(120deg, rgba(53, 242, 227, 0.08), transparent 60%),
    var(--ink-1);
  clip-path: polygon(
    0 0,
    100% 0,
    100% calc(100% - var(--about-cut)),
    calc(100% - var(--about-cut)) 100%,
    0 100%
  );
}

.page-about .about-cta__text h2 {
  margin: 0 0 10px;
  font-size: clamp(22px, 3vw, 32px);
  letter-spacing: 0.03em;
  color: var(--white);
}

.page-about .about-cta__text p {
  margin: 0;
  max-width: 40ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--fog);
}

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

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

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

  .page-about .about-data__strip {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }
}

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

  .page-about .about-claim__grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    align-items: start;
  }

  .page-about .about-claim__head {
    position: sticky;
    top: 96px;
  }

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

  .page-about .about-experts__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  }

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

  .page-about .about-eco__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .badge-row {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-reach__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    align-items: center;
  }

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

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

@media (prefers-reduced-motion: reduce) {
  .page-about .pillar,
  .page-about .about-data__card,
  .page-about .role,
  .page-about .eco-card {
    transition: none;
  }

  .page-about .pillar:hover,
  .page-about .about-data__card:hover,
  .page-about .role:hover,
  .page-about .eco-card:hover {
    transform: none;
  }
}
<<<END>>>