.page-about {
  background: var(--deep);
  color: var(--ink);
  overflow-x: hidden;
  font-family: var(--font-body);
}

/* ---------- 面包屑 ---------- */
.page-about .ab-crumbs {
  max-width: var(--shell);
  margin: 0 auto;
  padding: calc(var(--header-h) + 26px) 24px 0;
}

/* ---------- 通用容器 ---------- */
.page-about .ab-inner {
  width: 100%;
  max-width: var(--content);
  margin: 0 auto;
}

.page-about .ab-rail {
  position: absolute;
  top: 50%;
  left: 14px;
  transform: translateY(-50%);
  writing-mode: vertical-rl;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .34em;
  text-transform: uppercase;
  color: var(--ink-2);
  opacity: .5;
  pointer-events: none;
  user-select: none;
}

/* ---------- 首屏 ---------- */
.page-about .ab-hero {
  position: relative;
  padding: clamp(36px, 5vw, 64px) 24px clamp(68px, 9vw, 124px);
  background:
    radial-gradient(80% 62% at 88% 6%, rgba(108, 74, 182, .42), transparent 65%),
    radial-gradient(70% 55% at 6% 96%, rgba(62, 198, 198, .16), transparent 62%);
}

.page-about .ab-hero__title {
  margin: 18px 0 0;
  max-width: 13ch;
  background: linear-gradient(112deg, var(--ink) 32%, var(--gold) 118%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.page-about .ab-hero__lede {
  max-width: 62ch;
  margin-top: clamp(22px, 3vw, 32px);
}

.page-about .ab-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(26px, 5vw, 68px);
  margin-top: clamp(38px, 5.5vw, 68px);
  padding-top: 26px;
  border-top: 1px solid var(--line);
}

.page-about .ab-hero__stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-about .ab-hero__num {
  font-size: clamp(32px, 4.4vw, 54px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.01em;
  color: var(--ink);
}

.page-about .ab-hero__unit {
  font-size: .46em;
  font-weight: 500;
  color: var(--ice);
  margin-left: 4px;
}

.page-about .ab-hero__label {
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--ink-2);
}

/* ---------- 品牌故事 ---------- */
.page-about .ab-story {
  position: relative;
  padding: clamp(68px, 9vw, 128px) 24px;
  background: var(--panel);
  border-radius: clamp(26px, 4vw, 54px);
}

.page-about .ab-story__grid {
  display: grid;
  gap: clamp(36px, 5vw, 60px);
}

.page-about .ab-story__text p {
  margin-top: 18px;
  font-size: 16.5px;
  line-height: 1.85;
  color: var(--ink-2);
  max-width: 46ch;
}

.page-about .ab-story__figure {
  aspect-ratio: 3 / 2;
  border-radius: var(--radius-lg);
}

.page-about .ab-timeline {
  list-style: none;
  margin: clamp(30px, 4vw, 48px) 0 0;
  padding: 0 0 0 24px;
  border-left: 1px solid var(--line);
  display: grid;
  gap: 22px;
  max-width: 52ch;
}

.page-about .ab-timeline li {
  position: relative;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ink-2);
}

.page-about .ab-timeline li::before {
  content: "";
  position: absolute;
  left: -29px;
  top: 8px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--nebula);
  box-shadow: 0 0 0 4px rgba(108, 74, 182, .18);
}

.page-about .ab-timeline__stage {
  display: block;
  margin-bottom: 3px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--ice);
}

/* ---------- 团队分工 ---------- */
.page-about .ab-team {
  position: relative;
  padding: clamp(68px, 9vw, 128px) 24px;
}

.page-about .ab-team__lede {
  max-width: 60ch;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-about .ab-tabs__bar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(28px, 4vw, 46px);
}

.page-about .ab-tab {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  padding: 13px 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--ink-2);
  font-family: inherit;
  font-size: 15px;
  cursor: pointer;
  transition: background .22s var(--ease), color .22s var(--ease), border-color .22s var(--ease);
}

.page-about .ab-tab:hover {
  border-color: var(--ice);
  color: var(--ink);
}

.page-about .ab-tab[aria-selected="true"] {
  border-color: transparent;
  background: linear-gradient(118deg, rgba(108, 74, 182, .95), rgba(62, 198, 198, .48));
  color: var(--ink);
}

.page-about .ab-tab:focus-visible {
  outline: 2px solid var(--ice);
  outline-offset: 3px;
}

.page-about .ab-tab__num {
  font-size: 21px;
  font-weight: 700;
  line-height: 1;
}

.page-about .ab-tab__name {
  letter-spacing: .04em;
}

.page-about .ab-tabs__stack {
  margin-top: clamp(26px, 3.6vw, 42px);
  border-top: 1px solid var(--line);
  padding-top: clamp(24px, 3.4vw, 38px);
}

.page-about .ab-pane[hidden] {
  display: none;
}

.page-about .ab-pane__lead {
  font-size: clamp(18px, 2.2vw, 22px);
  font-weight: 600;
  line-height: 1.6;
  color: var(--ink);
  max-width: 34ch;
}

.page-about .ab-pane__list {
  list-style: none;
  margin: clamp(22px, 3vw, 34px) 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
  max-width: 62ch;
}

.page-about .ab-pane__list li {
  position: relative;
  padding-left: 22px;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--ink-2);
}

.page-about .ab-pane__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 8px;
  height: 2px;
  border-radius: 2px;
  background: var(--ice);
}

/* ---------- 生产流程 ---------- */
.page-about .ab-flow-sec {
  position: relative;
  padding: clamp(68px, 9vw, 128px) 24px;
  background: var(--panel);
  border-radius: clamp(26px, 4vw, 54px);
}

.page-about .ab-flow__lede {
  max-width: 58ch;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-about .ab-flow-wrap {
  margin-top: clamp(30px, 4.5vw, 56px);
}

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

.page-about .ab-flow__link {
  fill: none;
  stroke: url(#abFlowGrad);
  stroke-width: 2.5;
  stroke-linecap: round;
  opacity: .8;
}

.page-about .ab-node {
  cursor: default;
}

.page-about .ab-node rect {
  fill: rgba(11, 16, 38, .92);
  stroke: var(--line);
  stroke-width: 1.5;
  transition: fill .22s var(--ease), stroke .22s var(--ease);
}

.page-about .ab-node:hover rect,
.page-about .ab-node:focus-visible rect {
  fill: rgba(108, 74, 182, .38);
  stroke: var(--ice);
}

.page-about .ab-node:focus {
  outline: none;
}

.page-about .ab-node__label {
  fill: var(--ink);
  font-family: var(--font-body);
  font-size: 17px;
  font-weight: 600;
  letter-spacing: .04em;
  text-anchor: middle;
}

.page-about .ab-node__meta {
  fill: var(--ink-2);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .06em;
  text-anchor: middle;
  opacity: 0;
  transition: opacity .22s var(--ease);
}

.page-about .ab-node:hover .ab-node__meta,
.page-about .ab-node:focus-visible .ab-node__meta {
  opacity: 1;
}

.page-about .ab-flow__figure {
  margin-top: clamp(30px, 4vw, 48px);
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-lg);
}

/* ---------- 平台底座 ---------- */
.page-about .ab-infra {
  position: relative;
  padding: clamp(68px, 9vw, 128px) 24px;
}

.page-about .ab-infra__lede {
  max-width: 58ch;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-about .ab-infra__grid {
  display: grid;
  gap: clamp(26px, 3.4vw, 40px);
  margin-top: clamp(32px, 4.5vw, 58px);
}

.page-about .ab-infra__stat {
  padding-top: clamp(18px, 2.4vw, 26px);
  border-top: 2px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-about .ab-infra__stat:nth-child(1) { border-top-color: var(--nebula); }
.page-about .ab-infra__stat:nth-child(2) { border-top-color: var(--ice); }
.page-about .ab-infra__stat:nth-child(3) { border-top-color: var(--comet); }
.page-about .ab-infra__stat:nth-child(4) { border-top-color: var(--nebula); }

.page-about .ab-infra__value {
  font-size: clamp(34px, 4.6vw, 56px);
  font-weight: 700;
  line-height: 1;
  color: var(--ink);
}

.page-about .ab-infra__unit {
  font-size: .42em;
  font-weight: 500;
  color: var(--ink-2);
  margin-left: 5px;
}

.page-about .ab-infra__label {
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--ink-2);
  max-width: 22ch;
}

.page-about .ab-infra__note {
  margin-top: clamp(32px, 4.5vw, 54px);
  padding-top: 24px;
  border-top: 1px solid var(--line);
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--ink-2);
  max-width: 68ch;
}

/* ---------- 合作生态 ---------- */
.page-about .ab-partners {
  position: relative;
  padding: clamp(68px, 9vw, 128px) 24px;
  background:
    radial-gradient(70% 60% at 84% 10%, rgba(108, 74, 182, .3), transparent 64%),
    var(--panel);
  border-radius: clamp(26px, 4vw, 54px);
}

.page-about .ab-partners__lede {
  max-width: 62ch;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-about .ab-network {
  margin-top: clamp(28px, 4vw, 46px);
}

.page-about .ab-network__svg {
  display: block;
  width: 100%;
  height: auto;
  max-width: 860px;
  margin: 0 auto;
}

.page-about .ab-network__link {
  stroke: var(--line);
  stroke-width: 1.5;
  stroke-dasharray: 7 9;
}

.page-about .ab-network__node {
  cursor: default;
}

.page-about .ab-network__node:focus {
  outline: none;
}

.page-about .ab-network__dot {
  fill: var(--deep);
  stroke: var(--ice);
  stroke-width: 1.8;
  transition: fill .22s var(--ease), stroke-width .22s var(--ease);
}

.page-about .ab-network__node:hover .ab-network__dot,
.page-about .ab-network__node:focus-visible .ab-network__dot {
  fill: var(--ice);
  stroke-width: 2.6;
}

.page-about .ab-network__label {
  fill: var(--ink-2);
  font-family: var(--font-body);
  font-size: 13.5px;
  letter-spacing: .04em;
  text-anchor: middle;
  transition: fill .22s var(--ease);
}

.page-about .ab-network__node:hover .ab-network__label,
.page-about .ab-network__node:focus-visible .ab-network__label {
  fill: var(--ink);
}

.page-about .ab-network__core {
  fill: rgba(108, 74, 182, .28);
  stroke: var(--nebula);
  stroke-width: 1.5;
}

.page-about .ab-network__core-label {
  fill: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: .05em;
  text-anchor: middle;
}

.page-about .ab-network__core-sub {
  fill: var(--ink-2);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  text-anchor: middle;
}

.page-about .ab-partners__rows {
  display: grid;
  gap: clamp(26px, 3.6vw, 42px);
  margin-top: clamp(32px, 4.5vw, 54px);
}

.page-about .ab-partners__row {
  display: flex;
  align-items: flex-start;
  gap: clamp(18px, 2.6vw, 30px);
  padding-top: clamp(18px, 2.4vw, 26px);
  border-top: 1px solid var(--line);
}

.page-about .ab-partners__num {
  font-size: clamp(38px, 5vw, 62px);
  font-weight: 700;
  line-height: .9;
  color: var(--ice);
  flex: 0 0 auto;
}

.page-about .ab-partners__body {
  flex: 1 1 auto;
  min-width: 0;
}

.page-about .ab-partners__body p {
  margin-top: 8px;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--ink-2);
  max-width: 52ch;
}

.page-about .ab-partners__figure {
  margin-top: clamp(32px, 4.5vw, 52px);
  aspect-ratio: 14 / 9;
  border-radius: var(--radius-lg);
}

/* ---------- 联系 ---------- */
.page-about .ab-contact {
  position: relative;
  padding: clamp(68px, 9vw, 128px) 24px clamp(76px, 10vw, 136px);
  background:
    radial-gradient(58% 70% at 78% 18%, rgba(245, 197, 66, .12), transparent 62%);
}

.page-about .ab-contact__lede {
  max-width: 62ch;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-about .ab-contact__grid {
  display: grid;
  gap: 1px;
  margin-top: clamp(30px, 4vw, 48px);
  background: var(--line);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.page-about .ab-contact__item {
  background: var(--deep);
  padding: 24px 22px;
  display: grid;
  gap: 9px;
}

.page-about .ab-contact__k {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--ice);
}

.page-about .ab-contact__v {
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink);
  word-break: break-word;
}

.page-about .ab-contact__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: clamp(30px, 4vw, 48px);
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-about .ab-contact__grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-about .ab-infra__grid {
    grid-template-columns: repeat(2, 1fr);
    column-gap: clamp(40px, 6vw, 84px);
  }
}

@media (min-width: 900px) {
  .page-about .ab-story__grid {
    grid-template-columns: 1.04fr .86fr;
    align-items: start;
  }

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

@media (min-width: 1080px) {
  .page-about .ab-infra__grid {
    grid-template-columns: repeat(4, 1fr);
    column-gap: clamp(28px, 3.4vw, 52px);
  }
}

@media (max-width: 1100px) {
  .page-about .ab-rail {
    display: none;
  }
}

@media (max-width: 640px) {
  .page-about .ab-crumbs {
    padding-left: 18px;
    padding-right: 18px;
  }

  .page-about .ab-hero,
  .page-about .ab-story,
  .page-about .ab-team,
  .page-about .ab-flow-sec,
  .page-about .ab-infra,
  .page-about .ab-partners,
  .page-about .ab-contact {
    padding-left: 18px;
    padding-right: 18px;
  }

  .page-about .ab-hero__stats {
    gap: 22px 34px;
  }

  .page-about .ab-tab {
    padding: 11px 18px;
    font-size: 14px;
  }

  .page-about .ab-network__svg {
    max-width: 100%;
  }

  .page-about .ab-partners__row {
    flex-direction: column;
    gap: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .ab-tab,
  .page-about .ab-node rect,
  .page-about .ab-node__meta,
  .page-about .ab-network__dot,
  .page-about .ab-network__label {
    transition: none;
  }
}
<<<END>>>