.page-about {
  --ab-gap: clamp(18px, 3vw, 28px);
  background: var(--ink);
  color: var(--text);
}

.page-about .ab-crumb {
  margin-bottom: clamp(18px, 3vw, 28px);
}

/* ---------- 首屏 ---------- */
.page-about .ab-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(24px, 5vw, 48px) 0 clamp(44px, 7vw, 76px);
  background:
    radial-gradient(ellipse 60% 55% at 85% 10%, rgba(124, 92, 255, 0.34), transparent 62%),
    radial-gradient(ellipse 55% 50% at 6% 2%, rgba(51, 225, 214, 0.16), transparent 60%),
    var(--ink);
}

.page-about .ab-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background: repeating-linear-gradient(0deg, rgba(242, 246, 255, 0.035) 0 1px, transparent 1px 4px);
  -webkit-mask-image: linear-gradient(180deg, #000, transparent 78%);
  mask-image: linear-gradient(180deg, #000, transparent 78%);
}

.page-about .ab-hero__grid {
  display: grid;
  gap: clamp(22px, 4vw, 40px);
  align-items: center;
}

.page-about h1 {
  margin: 6px 0 16px;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: clamp(30px, 6vw, 52px);
  line-height: 1.12;
  letter-spacing: -0.02em;
  text-shadow: var(--glow-cyan);
}

.page-about .ab-hero__copy .lede {
  max-width: 46ch;
  margin: 0 0 24px;
  color: var(--muted);
  font-size: clamp(15px, 2.2vw, 17px);
}

.page-about .ab-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .ab-hero__media {
  position: relative;
  margin: 0;
}

.page-about .ab-hero__media::before {
  content: "";
  position: absolute;
  left: 18%;
  right: -6%;
  bottom: -10%;
  height: 58%;
  z-index: -1;
  filter: blur(26px);
  background: radial-gradient(ellipse at center, rgba(124, 92, 255, 0.38), transparent 70%);
}

.page-about .ab-hero__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-panel);
  object-fit: cover;
  clip-path: polygon(0 0, calc(100% - 30px) 0, 100% 30px, 100% 100%, 30px 100%, 0 calc(100% - 30px));
}

/* ---------- 数据条 ---------- */
.page-about .ab-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(26px, 4vw, 42px) 0 0;
  padding: 0;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-panel);
  overflow: hidden;
}

.page-about .ab-stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 18px;
  background: var(--panel);
}

.page-about .ab-stat dt {
  color: var(--muted);
  font-size: 13px;
  letter-spacing: 0.04em;
}

.page-about .ab-stat dd {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin: 0;
}

.page-about .ab-stat .num {
  font-family: var(--font-num);
  font-size: clamp(24px, 4.2vw, 32px);
  font-weight: 800;
  line-height: 1;
  color: var(--cyan);
  text-shadow: var(--glow-cyan);
  font-variant-numeric: tabular-nums;
}

.page-about .ab-stat small {
  font-size: 13px;
  color: var(--muted);
}

/* ---------- 通用标题 ---------- */
.page-about .ab-head {
  max-width: 66ch;
  margin: 0 0 clamp(22px, 4vw, 36px);
}

.page-about .ab-head h2 {
  margin: 6px 0 10px;
  font-family: var(--font-heading);
  font-size: clamp(22px, 3.6vw, 34px);
  font-weight: 800;
  line-height: 1.24;
  letter-spacing: -0.01em;
}

.page-about .ab-head .lede {
  max-width: 58ch;
  margin: 0;
  color: var(--muted);
}

.page-about .ab-origin,
.page-about .ab-claims-section,
.page-about .ab-network-section,
.page-about .ab-team,
.page-about .ab-history,
.page-about .ab-pledge-section,
.page-about .ab-cta {
  padding: clamp(40px, 7vw, 72px) 0;
}

/* ---------- 品牌起点 ---------- */
.page-about .ab-origin {
  background: linear-gradient(180deg, transparent, rgba(12, 18, 32, 0.6) 40%, transparent);
}

.page-about .ab-origin__grid {
  display: grid;
  gap: clamp(20px, 3.5vw, 36px);
}

.page-about .ab-origin__copy p {
  margin: 0 0 16px;
  color: var(--muted);
  line-height: 1.8;
}

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

.page-about .ab-origin__list {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .ab-origin__list li {
  padding: 16px 18px;
  background: linear-gradient(135deg, rgba(51, 225, 214, 0.09), rgba(12, 18, 32, 0.92));
  border-left: 3px solid var(--cyan);
  border-radius: 0 14px 14px 0;
}

.page-about .ab-origin__list strong {
  display: block;
  margin-bottom: 4px;
  font-size: 16px;
}

.page-about .ab-origin__list span {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}

/* ---------- 三条主张 ---------- */
.page-about .ab-claims {
  display: grid;
  gap: clamp(14px, 2.5vw, 20px);
}

.page-about .ab-claim {
  position: relative;
  padding: 26px 22px 24px;
  background:
    linear-gradient(150deg, rgba(124, 92, 255, 0.12), rgba(12, 18, 32, 0.96) 58%),
    var(--panel);
  border: 1px solid var(--line);
  border-radius: 2px;
  clip-path: polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 0 100%);
  transition: transform 160ms var(--ease), border-color 160ms ease-out;
}

.page-about .ab-claim:hover {
  transform: translateY(-4px);
  border-color: rgba(51, 225, 214, 0.5);
}

.page-about .ab-claim__num {
  margin: 0 0 10px;
  font-family: var(--font-num);
  font-size: 28px;
  font-weight: 800;
  line-height: 1;
  color: rgba(124, 92, 255, 0.95);
  text-shadow: var(--glow-violet);
}

.page-about .ab-claim h3 {
  margin: 0 0 8px;
  font-size: 19px;
  font-weight: 800;
  letter-spacing: 0.01em;
}

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

.page-about .ab-claim__do {
  margin-top: 14px !important;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  font-size: 13px !important;
  color: var(--text) !important;
  opacity: 0.78;
}

/* ---------- 分室网络 ---------- */
.page-about .ab-network-section {
  background:
    radial-gradient(ellipse 70% 60% at 20% 0%, rgba(51, 225, 214, 0.09), transparent 65%),
    var(--ink-2);
}

.page-about .ab-network {
  display: grid;
  gap: clamp(22px, 4vw, 40px);
  align-items: center;
}

.page-about .ab-network__map {
  padding: clamp(12px, 3vw, 26px);
  background:
    radial-gradient(ellipse at 50% 40%, rgba(51, 225, 214, 0.10), transparent 68%),
    var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-panel);
  overflow: hidden;
}

.page-about .ab-network__map svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-about .ab-city circle {
  fill: rgba(51, 225, 214, 0.12);
  stroke: rgba(51, 225, 214, 0.75);
  stroke-width: 1.5;
  transform-box: fill-box;
  transform-origin: center;
  transition: transform 200ms var(--ease), fill 200ms ease-out, stroke 200ms ease-out;
}

.page-about .ab-city text {
  fill: var(--text);
  font-family: var(--font-num);
  font-size: 13px;
  font-weight: 700;
  text-anchor: middle;
  dominant-baseline: central;
  pointer-events: none;
}

.page-about .ab-city--lg circle {
  fill: rgba(124, 92, 255, 0.16);
  stroke: rgba(124, 92, 255, 0.85);
}

.page-about .ab-city:hover circle {
  fill: rgba(255, 174, 87, 0.28);
  stroke: var(--amber);
  transform: scale(1.14);
}

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

.page-about .ab-network__row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 14px 16px;
  border-left: 2px solid var(--line);
}

.page-about .ab-network__row .num {
  font-family: var(--font-num);
  font-size: clamp(26px, 4vw, 34px);
  font-weight: 800;
  line-height: 1;
  color: var(--violet);
  text-shadow: var(--glow-violet);
  font-variant-numeric: tabular-nums;
}

.page-about .ab-network__row p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}

/* ---------- 团队 ---------- */
.page-about .ab-team__grid {
  display: grid;
  gap: clamp(22px, 4vw, 40px);
  align-items: center;
}

.page-about .ab-team__copy > p {
  margin: 0;
  color: var(--muted);
  line-height: 1.8;
}

.page-about .ab-team__list {
  display: grid;
  gap: 16px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .ab-team__list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  align-items: baseline;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line-soft);
}

.page-about .ab-team__list li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-about .ab-team__list .num {
  font-family: var(--font-num);
  font-size: clamp(22px, 3.4vw, 28px);
  font-weight: 800;
  line-height: 1;
  color: var(--cyan);
  text-shadow: var(--glow-cyan);
  font-variant-numeric: tabular-nums;
}

.page-about .ab-team__list strong {
  display: block;
  margin-bottom: 4px;
  font-size: 15px;
}

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

.page-about .ab-team__media {
  position: relative;
  margin: 0;
  background: var(--panel);
  clip-path: polygon(20px 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%, 0 20px);
}

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

/* ---------- 发展历程 ---------- */
.page-about .ab-history__band {
  margin: 0 0 clamp(22px, 3.5vw, 34px);
  border-radius: var(--radius-panel);
  overflow: hidden;
}

.page-about .ab-history__band img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  opacity: 0.88;
}

.page-about .ab-stages {
  display: grid;
  gap: clamp(14px, 2.4vw, 20px);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .ab-stage {
  position: relative;
  display: grid;
  gap: 14px;
  padding: clamp(20px, 3vw, 28px) clamp(18px, 3vw, 30px);
  background:
    linear-gradient(105deg, rgba(124, 92, 255, 0.16) 0%, rgba(12, 18, 32, 0.95) 44%),
    var(--panel);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%);
  transition: transform 200ms var(--ease), border-color 200ms ease-out;
}

.page-about .ab-stage:hover {
  border-color: rgba(124, 92, 255, 0.6);
}

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

.page-about .ab-stage__num {
  font-family: var(--font-num);
  font-size: clamp(34px, 6vw, 54px);
  font-weight: 800;
  line-height: 1;
  color: rgba(124, 92, 255, 0.62);
  font-variant-numeric: tabular-nums;
}

.page-about .ab-stage__name {
  margin: 0;
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-about .ab-stage__body p {
  margin: 0;
  max-width: 62ch;
  color: var(--muted);
  line-height: 1.8;
}

/* ---------- 服务标准（浅色呼吸块） ---------- */
.page-about .ab-pledge {
  padding: clamp(26px, 5vw, 48px);
  background: var(--light);
  color: #0b1220;
  border-radius: var(--radius-panel);
}

.page-about .ab-pledge .ab-pledge__eyebrow {
  margin: 0;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: #0f6e68;
}

.page-about .ab-pledge h2 {
  color: #0b1220;
  text-shadow: none;
}

.page-about .ab-pledge .lede {
  color: #3c4b63;
}

.page-about .ab-pledge__list {
  display: grid;
  gap: 1px;
  margin: clamp(18px, 3vw, 26px) 0 0;
  padding: 0;
  list-style: none;
  background: rgba(11, 18, 32, 0.14);
  border-radius: 14px;
  overflow: hidden;
}

.page-about .ab-pledge__list li {
  padding: 16px 18px;
  background: var(--light);
}

.page-about .ab-pledge__list strong {
  display: block;
  margin-bottom: 4px;
  font-size: 15px;
  color: #0b1220;
}

.page-about .ab-pledge__list span {
  font-size: 14px;
  line-height: 1.7;
  color: #3c4b63;
}

/* ---------- 收尾 ---------- */
.page-about .ab-cta {
  padding-top: 0;
}

.page-about .ab-cta__inner {
  display: grid;
  gap: 20px;
  padding: clamp(24px, 4vw, 40px);
  border: 1px solid var(--line);
  border-radius: var(--radius-panel);
  background:
    radial-gradient(ellipse 80% 120% at 8% 0%, rgba(51, 225, 214, 0.20), transparent 58%),
    radial-gradient(ellipse 80% 120% at 94% 100%, rgba(124, 92, 255, 0.26), transparent 60%),
    var(--panel);
}

.page-about .ab-cta__inner h2 {
  margin: 0 0 8px;
  font-family: var(--font-heading);
  font-size: clamp(20px, 3vw, 26px);
  font-weight: 800;
  line-height: 1.3;
}

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

.page-about .ab-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 断点 ---------- */
@media (min-width: 700px) {
  .page-about .ab-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

@media (min-width: 820px) {
  .page-about .ab-claims {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .ab-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}

@media (min-width: 900px) {
  .page-about .ab-hero__grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
  }

  .page-about .ab-origin__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: start;
  }

  .page-about .ab-network {
    grid-template-columns: minmax(0, 1.28fr) minmax(0, 0.72fr);
  }

  .page-about .ab-team__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }

  .page-about .ab-stage {
    grid-template-columns: 132px minmax(0, 1fr);
    gap: clamp(18px, 3vw, 34px);
    align-items: start;
  }

  .page-about .ab-stage__label {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .page-about .ab-stage__name {
    writing-mode: vertical-rl;
    letter-spacing: 0.34em;
  }

  .page-about .ab-stage:hover {
    transform: translateX(4px);
  }
}

@media (max-width: 400px) {
  .page-about .ab-hero__actions .btn,
  .page-about .ab-cta__actions .btn {
    flex: 1 1 100%;
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .ab-claim,
  .page-about .ab-stage,
  .page-about .ab-city circle {
    transition: none;
  }

  .page-about .ab-claim:hover,
  .page-about .ab-stage:hover {
    transform: none;
  }

  .page-about .ab-city:hover circle {
    transform: none;
  }
}
<<<END>>>