.page-about {
  --about-gap: clamp(18px, 2.6vw, 28px);
  --about-pad: clamp(48px, 8vw, 96px);
  background: var(--c-night);
  color: var(--c-paper);
  overflow-x: clip;
}

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

.page-about .about-section {
  padding: var(--about-pad) 0;
}

.page-about .about-head {
  max-width: 720px;
  margin-bottom: clamp(24px, 4vw, 40px);
}

.page-about .about-head h2 {
  margin: 10px 0 12px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 3.4vw, 40px);
  line-height: 1.24;
  letter-spacing: -0.02em;
  color: var(--c-paper);
}

.page-about .about-head__note {
  margin: 0;
  color: var(--c-mist);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
}

/* —— 顶部 —— */
.page-about .about-top {
  position: relative;
  padding: clamp(24px, 4vw, 40px) 0 clamp(40px, 7vw, 84px);
  background:
    radial-gradient(120% 90% at 8% -12%, rgba(122, 92, 255, 0.34), transparent 62%),
    radial-gradient(90% 80% at 102% 6%, rgba(77, 227, 210, 0.16), transparent 66%),
    var(--c-ink);
  border-bottom: 1px solid var(--c-line);
  overflow: hidden;
}

.page-about .about-top::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(143, 163, 191, 0.14) 1px, transparent 1px),
    linear-gradient(90deg, rgba(143, 163, 191, 0.14) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: linear-gradient(180deg, #000 0%, transparent 88%);
  mask-image: linear-gradient(180deg, #000 0%, transparent 88%);
  opacity: 0.5;
  pointer-events: none;
}

.page-about .about-top .wrap {
  position: relative;
  z-index: 1;
}

.page-about .about-hero {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
  margin-top: clamp(22px, 4vw, 42px);
}

.page-about .about-hero__kicker {
  margin: 0 0 14px;
  color: var(--c-cyan);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.page-about .about-hero__lead h1 {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 5.2vw, 60px);
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--c-paper);
  text-shadow: 0 0 34px rgba(122, 92, 255, 0.28);
}

.page-about .about-hero__text {
  margin: 0;
  max-width: 620px;
  color: rgba(243, 233, 218, 0.82);
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.9;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 32px);
}

.page-about .about-hero__side {
  align-self: start;
  padding: clamp(18px, 2.4vw, 24px);
  border: 1px solid var(--c-line-strong);
  border-radius: var(--radius-lg);
  background: linear-gradient(160deg, rgba(20, 38, 74, 0.66), rgba(5, 12, 26, 0.72));
  box-shadow: var(--shadow-float);
}

.page-about .about-hero__side-title {
  margin: 0 0 14px;
  font-family: var(--font-index);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-mist);
}

.page-about .about-chips {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .about-chip {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 12px 16px;
  border-radius: var(--pill);
  border: 1px solid var(--c-line);
  background: rgba(255, 255, 255, 0.04);
}

.page-about .about-chip__key {
  font-size: 13px;
  color: var(--c-mist);
}

.page-about .about-chip__val {
  font-family: var(--font-index);
  font-size: 15px;
  color: var(--c-cyan);
  text-shadow: 0 0 1px rgba(77, 227, 210, 0.9);
}

/* —— 起点 —— */
.page-about .about-origin {
  background: var(--c-night);
}

.page-about .about-origin__grid {
  display: grid;
  gap: clamp(28px, 4vw, 52px);
}

.page-about .about-origin__body h2 {
  margin: 10px 0 18px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 3.4vw, 40px);
  line-height: 1.26;
  letter-spacing: -0.02em;
}

.page-about .about-origin__body p {
  margin: 0 0 18px;
  max-width: 640px;
  color: rgba(243, 233, 218, 0.84);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.9;
}

.page-about .about-quote {
  position: relative;
  margin: 26px 0;
  padding: 6px 0 6px 22px;
  border-left: 3px solid var(--c-bind);
  font-size: clamp(16px, 1.9vw, 20px);
  line-height: 1.75;
  color: var(--c-paper);
  font-weight: 500;
}

.page-about .about-origin__aside {
  padding: clamp(20px, 2.6vw, 28px);
  border-radius: var(--radius-xl);
  border: 1px solid var(--c-line);
  background: var(--c-panel-deep);
  box-shadow: var(--shadow-card);
}

.page-about .about-origin__aside-title {
  margin: 0 0 18px;
  font-size: 16px;
  font-weight: 700;
  color: var(--c-paper);
}

.page-about .origin-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-about .origin-item {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding-bottom: 16px;
  border-bottom: 1px dashed var(--c-line);
}

.page-about .origin-item:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-about .origin-item__no {
  color: var(--c-orange);
  font-size: 14px;
  line-height: 1.7;
}

.page-about .origin-item__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(243, 233, 218, 0.82);
}

/* —— 阶段带 —— */
.page-about .about-stages {
  background: linear-gradient(180deg, var(--c-night) 0%, var(--c-ink) 60%, var(--c-night) 100%);
  border-top: 1px solid var(--c-line);
  border-bottom: 1px solid var(--c-line);
}

.page-about .about-stages__figure {
  margin: 0 0 clamp(28px, 4vw, 44px);
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--c-line);
}

.page-about .stage-rail {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 18px;
  counter-reset: stage;
}

.page-about .stage-node {
  position: relative;
  padding: clamp(20px, 2.4vw, 26px);
  border-radius: var(--radius-lg);
  border: 1px solid var(--c-line);
  background: linear-gradient(165deg, rgba(20, 38, 74, 0.78), rgba(5, 12, 26, 0.86));
  box-shadow: var(--shadow-float);
  transition: transform 0.32s var(--ease), border-color 0.32s var(--ease), box-shadow 0.32s var(--ease);
}

.page-about .stage-node::before {
  content: "";
  position: absolute;
  left: clamp(20px, 2.4vw, 26px);
  top: 0;
  width: 46px;
  height: 2px;
  background: var(--c-cyan);
  opacity: 0.85;
}

.page-about .stage-node--key {
  border-color: rgba(122, 92, 255, 0.72);
  box-shadow: 0 0 0 1px rgba(122, 92, 255, 0.22), var(--shadow-card);
}

.page-about .stage-node--key::before {
  background: linear-gradient(90deg, var(--c-violet), var(--c-cyan));
  width: 72px;
}

.page-about .stage-node:hover,
.page-about .stage-node:focus-within {
  transform: translateY(-3px);
  border-color: rgba(77, 227, 210, 0.62);
}

.page-about .stage-node__num {
  display: inline-block;
  margin-bottom: 10px;
  color: var(--c-cyan);
  font-size: 12px;
  letter-spacing: 0.12em;
}

.page-about .stage-node__title {
  margin: 0 0 10px;
  font-size: clamp(17px, 2vw, 20px);
  font-weight: 800;
  line-height: 1.4;
  color: var(--c-paper);
}

.page-about .stage-node__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(243, 233, 218, 0.78);
}

/* —— 团队 —— */
.page-about .about-team__head {
  display: grid;
  gap: clamp(22px, 3vw, 40px);
  margin-bottom: clamp(26px, 4vw, 42px);
}

.page-about .about-team__lead h2 {
  margin: 10px 0 14px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 3.4vw, 40px);
  line-height: 1.24;
  letter-spacing: -0.02em;
}

.page-about .about-team__intro {
  margin: 0;
  max-width: 560px;
  color: var(--c-mist);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
}

.page-about .about-team__figure {
  margin: 0;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--c-line);
}

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

.page-about .team-cell {
  padding: clamp(16px, 2vw, 22px);
  border-radius: var(--radius-lg);
  border: 1px solid var(--c-line);
  background: rgba(255, 255, 255, 0.035);
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease), background 0.3s var(--ease);
}

.page-about .team-cell:hover,
.page-about .team-cell:focus-visible {
  transform: translateY(-3px);
  border-color: rgba(77, 227, 210, 0.6);
  background: rgba(77, 227, 210, 0.07);
  outline: none;
}

.page-about .team-cell__num {
  display: block;
  font-family: var(--font-index);
  font-size: clamp(28px, 4.4vw, 42px);
  font-weight: 700;
  line-height: 1;
  color: var(--c-cyan);
  text-shadow: 0 0 1px rgba(77, 227, 210, 0.9);
}

.page-about .team-cell__name {
  margin: 10px 0 8px;
  font-size: 16px;
  font-weight: 700;
  color: var(--c-paper);
}

.page-about .team-cell__duty {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: rgba(243, 233, 218, 0.72);
}

/* —— 维护流程 —— */
.page-about .about-maintenance {
  background: var(--c-ink);
  border-top: 1px solid var(--c-line);
  border-bottom: 1px solid var(--c-line);
}

.page-about .flow-rail {
  list-style: none;
  margin: 0 0 clamp(24px, 3.4vw, 36px);
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .flow-step {
  position: relative;
  padding: clamp(18px, 2.2vw, 24px) clamp(18px, 2.2vw, 24px) clamp(18px, 2.2vw, 24px) clamp(22px, 2.6vw, 30px);
  border-radius: var(--radius-lg);
  border: 1px solid var(--c-line);
  background: linear-gradient(150deg, rgba(20, 38, 74, 0.7), rgba(5, 12, 26, 0.7));
}

.page-about .flow-step::before {
  content: "";
  position: absolute;
  left: 10px;
  top: clamp(18px, 2.2vw, 24px);
  bottom: clamp(18px, 2.2vw, 24px);
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--c-orange), rgba(255, 139, 61, 0.1));
}

.page-about .flow-step__no {
  display: block;
  margin-bottom: 8px;
  color: var(--c-orange);
  font-size: 12px;
  letter-spacing: 0.12em;
}

.page-about .flow-step__title {
  margin: 0 0 8px;
  font-size: 16.5px;
  font-weight: 700;
  color: var(--c-paper);
}

.page-about .flow-step__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(243, 233, 218, 0.76);
}

.page-about .about-maintenance__note {
  padding: clamp(20px, 2.6vw, 28px);
  border-radius: var(--radius-xl);
  border: 1px solid rgba(77, 227, 210, 0.3);
  background: rgba(77, 227, 210, 0.06);
}

.page-about .about-maintenance__note p {
  margin: 0 0 14px;
  max-width: 640px;
  font-size: 15.5px;
  line-height: 1.85;
  color: rgba(243, 233, 218, 0.86);
}

.page-about .about-maintenance__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin: 0 !important;
}

.page-about .about-link {
  display: inline-block;
  color: var(--c-cyan);
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px solid rgba(77, 227, 210, 0.5);
  padding-bottom: 2px;
  transition: border-color 0.25s var(--ease), color 0.25s var(--ease);
}

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

/* —— 服务区域 —— */
.page-about .about-regions__grid {
  display: grid;
  gap: clamp(26px, 3.6vw, 46px);
}

.page-about .about-regions__body h2 {
  margin: 10px 0 18px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 3.4vw, 40px);
  line-height: 1.26;
  letter-spacing: -0.02em;
}

.page-about .about-regions__body > p {
  margin: 0 0 22px;
  max-width: 620px;
  color: rgba(243, 233, 218, 0.82);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.9;
}

.page-about .region-stats {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .region-stat {
  padding: 14px 18px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--c-line);
  background: rgba(255, 255, 255, 0.035);
}

.page-about .region-stat__num {
  display: block;
  font-family: var(--font-index);
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 700;
  color: var(--c-cyan);
  text-shadow: 0 0 1px rgba(77, 227, 210, 0.9);
}

.page-about .region-stat__label {
  display: block;
  margin-top: 6px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--c-mist);
}

.page-about .about-regions__foot {
  margin: 0 0 16px;
  max-width: 620px;
  color: rgba(243, 233, 218, 0.72);
  font-size: 15px;
  line-height: 1.85;
}

.page-about .about-regions__figure {
  margin: 0;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--c-line);
}

/* —— 安全与合规 —— */
.page-about .about-security {
  background: var(--c-ink);
  border-top: 1px solid var(--c-line);
}

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

.page-about .security-card {
  padding: clamp(22px, 3vw, 34px);
  border-radius: var(--radius-xl);
  color: var(--c-brown);
}

.page-about .security-card__tag {
  margin: 0 0 12px;
  color: #6b4a2e;
  font-size: 12px;
  letter-spacing: 0.06em;
}

.page-about .security-card__title {
  margin: 0 0 12px;
  font-size: clamp(18px, 2.2vw, 22px);
  font-weight: 900;
  line-height: 1.4;
  color: var(--c-brown);
}

.page-about .security-card__text {
  margin: 0;
  max-width: 620px;
  font-size: 15.5px;
  line-height: 1.9;
  color: #3a2f26;
}

/* —— 收尾 —— */
.page-about .about-next {
  background:
    radial-gradient(120% 120% at 90% 0%, rgba(255, 139, 61, 0.14), transparent 62%),
    var(--c-night);
  border-top: 1px solid var(--c-line);
}

.page-about .about-next__inner {
  display: grid;
  gap: clamp(22px, 3vw, 36px);
}

.page-about .about-next__copy h2 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(22px, 3.2vw, 34px);
  line-height: 1.3;
  letter-spacing: -0.02em;
}

.page-about .about-next__copy p {
  margin: 0;
  max-width: 600px;
  color: rgba(243, 233, 218, 0.8);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.9;
}

.page-about .about-next__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-content: start;
}

@media (min-width: 720px) {
  .page-about .team-matrix {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .page-about .flow-rail {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

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

@media (min-width: 960px) {
  .page-about .about-hero {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: start;
  }

  .page-about .about-origin__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: start;
  }

  .page-about .about-maintenance__note {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 24px;
  }

  .page-about .about-maintenance__note p {
    margin-bottom: 0;
  }

  .page-about .about-maintenance__links {
    flex-direction: column;
    gap: 12px;
    text-align: right;
  }

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

  .page-about .about-next__inner {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    align-items: center;
  }

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

@media (min-width: 1080px) {
  .page-about .about-team__head {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    align-items: center;
  }

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

  .page-about .stage-rail {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
  }

  .page-about .stage-rail::before {
    content: "";
    position: absolute;
    left: 6px;
    right: 6px;
    top: 34px;
    height: 1px;
    background: linear-gradient(90deg, var(--c-cyan), var(--c-violet) 55%, rgba(122, 92, 255, 0.12));
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-about .stage-node,
  .page-about .team-cell {
    transition: none;
  }

  .page-about .stage-node:hover,
  .page-about .stage-node:focus-within,
  .page-about .team-cell:hover,
  .page-about .team-cell:focus-visible {
    transform: none;
  }
}
<<<END>>>