.page-about {
  position: relative;
  padding-top: calc(var(--dw-header-h) + 8px);
  padding-bottom: 96px;
  color: var(--dw-ink);
  font-family: var(--dw-body);
  font-size: var(--dw-fs-17);
  line-height: 1.75;
  background: var(--dw-void);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-about .ab-hero {
  position: relative;
  padding: 16px 0 44px;
}

.page-about .ab-hero::before {
  content: "";
  position: absolute;
  top: -80px;
  left: 0;
  right: 0;
  height: 460px;
  background:
    radial-gradient(58% 66% at 18% 38%, rgba(255, 45, 149, 0.20), transparent 72%),
    radial-gradient(48% 58% at 82% 6%, rgba(34, 224, 255, 0.16), transparent 74%);
  pointer-events: none;
  z-index: 0;
}

.page-about .ab-hero > .dw-shell {
  position: relative;
  z-index: 1;
}

.page-about .ab-hero__grid {
  display: grid;
  gap: 30px;
  margin-top: 22px;
}

.page-about .ab-hero__title {
  margin: 10px 0 18px;
  font-family: var(--dw-display);
  font-weight: 900;
  font-size: clamp(30px, 6.4vw, 56px);
  line-height: 1.14;
  letter-spacing: 0.01em;
  color: var(--dw-ink);
  text-shadow: 3px 3px 0 var(--dw-grid), -1px -1px 0 rgba(255, 45, 149, 0.35);
}

.page-about .ab-hero__lede {
  max-width: 62ch;
  margin: 0;
  color: var(--dw-ink);
  opacity: 0.92;
}

.page-about .ab-facts {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  border: 1px solid var(--dw-grid);
  border-left: 2px solid var(--dw-magenta);
  background: var(--dw-panel);
  clip-path: var(--dw-cut-sm);
}

.page-about .ab-facts__item {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 11px 16px;
  border-bottom: 1px dashed rgba(30, 43, 82, 0.9);
}

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

.page-about .ab-facts__k {
  font-family: var(--dw-mono);
  font-size: var(--dw-fs-12);
  letter-spacing: 0.10em;
  color: var(--dw-muted);
  white-space: nowrap;
}

.page-about .ab-facts__v {
  font-size: var(--dw-fs-14);
  color: var(--dw-ink);
  text-align: right;
}

/* ---------- 主体骨架 ---------- */
.page-about .ab-body {
  display: block;
  margin-top: 48px;
}

.page-about .ab-rail {
  margin-bottom: 30px;
  padding: 16px 18px;
  border: 1px solid var(--dw-grid);
  background: var(--dw-panel);
  clip-path: var(--dw-cut-sm);
}

.page-about .ab-rail__title {
  margin: 0 0 12px;
  font-family: var(--dw-mono);
  font-size: var(--dw-fs-12);
  letter-spacing: 0.20em;
  color: var(--dw-muted);
  text-transform: uppercase;
}

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

.page-about .ab-rail__link {
  display: block;
  padding: 6px 10px;
  font-family: var(--dw-mono);
  font-size: var(--dw-fs-12);
  letter-spacing: 0.08em;
  color: var(--dw-muted);
  text-decoration: none;
  border: 1px solid var(--dw-grid);
  clip-path: var(--dw-cut-xs);
  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

.page-about .ab-rail__link:hover,
.page-about .ab-rail__link:focus-visible {
  color: var(--dw-cyan);
  border-color: var(--dw-cyan);
}

.page-about .ab-rail__link[aria-current="true"],
.page-about .ab-rail__link[aria-current="location"] {
  color: var(--dw-void);
  background: var(--dw-cyan);
  border-color: var(--dw-cyan);
}

/* ---------- 章节 ---------- */
.page-about .ab-sec {
  padding-top: 4px;
}

.page-about .ab-sec + .ab-sec {
  margin-top: 56px;
  padding-top: 44px;
  border-top: 2px dashed var(--dw-grid);
}

.page-about .ab-sec__head {
  max-width: 72ch;
}

.page-about .ab-sec__title {
  margin: 8px 0 12px;
  font-family: var(--dw-display);
  font-weight: 800;
  font-size: clamp(22px, 4.6vw, 32px);
  line-height: 1.25;
  color: var(--dw-ink);
  text-shadow: 2px 2px 0 var(--dw-grid);
}

.page-about .ab-sec__lede {
  margin: 0;
  color: var(--dw-ink);
  opacity: 0.88;
}

/* ---------- 发展脉络 ---------- */
.page-about .ab-growth__media {
  margin: 28px 0 0;
}

.page-about .ab-timeline {
  position: relative;
  display: grid;
  gap: 20px;
  margin: 32px 0 0;
  padding: 0 0 0 26px;
  list-style: none;
}

.page-about .ab-timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: linear-gradient(180deg, var(--dw-magenta), var(--dw-cyan) 52%, var(--dw-gold));
  opacity: 0.6;
}

.page-about .ab-timeline__item {
  position: relative;
  padding: 16px 18px;
  border: 1px solid var(--dw-grid);
  background: var(--dw-panel);
  clip-path: var(--dw-cut-sm);
  transition: transform 0.22s ease, border-color 0.22s ease;
}

.page-about .ab-timeline__item::before {
  content: "";
  position: absolute;
  left: -26px;
  top: 22px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--dw-void);
  border: 2px solid var(--dw-cyan);
  box-shadow: 0 0 0 4px rgba(34, 224, 255, 0.12);
  transition: background-color 0.22s ease, box-shadow 0.22s ease;
}

.page-about .ab-timeline__item:hover {
  transform: translateY(-3px);
  border-color: rgba(34, 224, 255, 0.55);
}

.page-about .ab-timeline__item:hover::before {
  background: var(--dw-cyan);
  box-shadow: 0 0 0 6px rgba(34, 224, 255, 0.22);
}

.page-about .ab-timeline__stage {
  margin: 0 0 8px;
  font-family: var(--dw-display);
  font-weight: 800;
  font-size: var(--dw-fs-17);
  line-height: 1.4;
  color: var(--dw-gold);
}

.page-about .ab-timeline__desc {
  margin: 0;
  font-size: var(--dw-fs-14);
  line-height: 1.7;
  color: var(--dw-muted);
}

.page-about .ab-timeline__item:hover .ab-timeline__desc {
  color: var(--dw-ink);
}

/* ---------- 收费栏目 ---------- */
.page-about .ab-charges {
  display: grid;
  gap: 18px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .ab-charges__item {
  padding: 20px 20px 22px;
  border: 1px solid var(--dw-grid);
  background: var(--dw-panel);
  clip-path: var(--dw-cut-sm);
  transition: transform 0.22s ease, border-color 0.22s ease;
}

.page-about .ab-charges__item:hover {
  transform: translateY(-3px);
  border-color: rgba(34, 224, 255, 0.5);
}

.page-about .ab-charges__name {
  margin: 12px 0 10px;
  font-family: var(--dw-display);
  font-weight: 800;
  font-size: var(--dw-fs-22);
  line-height: 1.3;
  color: var(--dw-ink);
}

.page-about .ab-charges__desc {
  margin: 0;
  font-size: var(--dw-fs-14);
  line-height: 1.75;
  color: var(--dw-muted);
}

.page-about .ab-charges__note {
  margin-top: 26px;
  padding: 20px 22px;
  border-left: 2px solid var(--dw-magenta);
  background: linear-gradient(90deg, rgba(255, 45, 149, 0.10), rgba(16, 26, 56, 0.9) 62%);
  clip-path: var(--dw-cut-sm);
}

.page-about .ab-charges__note p {
  margin: 0 0 16px;
  max-width: 68ch;
  font-size: var(--dw-fs-14);
  line-height: 1.8;
  color: var(--dw-ink);
}

.page-about .ab-charges__links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px;
}

/* ---------- 运营分工 ---------- */
.page-about .ab-team__wrap {
  display: grid;
  gap: 26px;
  margin-top: 28px;
}

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

.page-about .ab-team__card {
  position: relative;
  padding: 18px 18px 20px 24px;
  border: 1px solid var(--dw-grid);
  background: var(--dw-panel);
  clip-path: var(--dw-cut-sm);
  transition: transform 0.22s ease, border-color 0.22s ease;
}

.page-about .ab-team__card:hover {
  transform: translateY(-3px);
  border-color: rgba(255, 45, 149, 0.5);
}

.page-about .ab-team__bar {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--dw-violet);
  transition: background-color 0.22s ease, box-shadow 0.22s ease;
}

.page-about .ab-team__card:nth-child(2) .ab-team__bar { background: var(--dw-cyan); }
.page-about .ab-team__card:nth-child(3) .ab-team__bar { background: var(--dw-gold); }
.page-about .ab-team__card:nth-child(4) .ab-team__bar { background: var(--dw-magenta); }

.page-about .ab-team__card:hover .ab-team__bar {
  background: var(--dw-magenta);
  box-shadow: 0 0 14px rgba(255, 45, 149, 0.75);
}

.page-about .ab-team__idx {
  margin: 0 0 6px;
  font-family: var(--dw-mono);
  font-size: var(--dw-fs-12);
  letter-spacing: 0.16em;
  color: var(--dw-muted);
}

.page-about .ab-team__name {
  margin: 0 0 8px;
  font-family: var(--dw-display);
  font-weight: 800;
  font-size: var(--dw-fs-17);
  line-height: 1.35;
  color: var(--dw-ink);
}

.page-about .ab-team__desc {
  margin: 0;
  font-size: var(--dw-fs-14);
  line-height: 1.72;
  color: var(--dw-muted);
}

.page-about .ab-team__media {
  margin: 0;
}

/* ---------- 接入生态 ---------- */
.page-about .ab-net {
  margin: 28px 0 0;
  padding: 18px 8px 10px;
  border: 1px solid var(--dw-grid);
  background:
    radial-gradient(62% 62% at 50% 46%, rgba(185, 140, 255, 0.16), transparent 72%),
    var(--dw-panel);
  clip-path: var(--dw-cut);
}

.page-about .ab-net__svg {
  display: block;
  width: 100%;
  height: auto;
  max-width: 640px;
  margin: 0 auto;
}

.page-about .ab-net__links line {
  stroke: var(--dw-grid);
  stroke-width: 1.5;
  stroke-dasharray: 5 5;
}

.page-about .ab-net__node {
  transform-box: fill-box;
  transform-origin: center;
  transition: transform 0.22s ease;
  cursor: default;
}

.page-about .ab-net__node circle {
  fill: rgba(7, 11, 27, 0.88);
  stroke: var(--dw-grid);
  stroke-width: 1.5;
  transition: stroke 0.22s ease, filter 0.22s ease;
}

.page-about .ab-net__node--hub circle {
  fill: rgba(255, 45, 149, 0.14);
  stroke: var(--dw-magenta);
  stroke-width: 2;
}

.page-about .ab-net__node:hover {
  transform: scale(1.08);
}

.page-about .ab-net__node:hover circle {
  stroke: var(--dw-cyan);
  filter: drop-shadow(0 0 10px rgba(34, 224, 255, 0.65));
}

.page-about .ab-net__label {
  font-family: var(--dw-body);
  font-size: 13px;
  fill: var(--dw-ink);
}

.page-about .ab-net__sub {
  font-family: var(--dw-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  fill: var(--dw-gold);
}

.page-about .ab-net figcaption {
  margin-top: 12px;
  padding: 0 10px;
  text-align: center;
}

.page-about .ab-network__media {
  margin: 28px 0 0;
}

.page-about .ab-steps {
  display: grid;
  gap: 16px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .ab-steps__item {
  padding: 16px 18px;
  border: 1px solid var(--dw-grid);
  border-top: 2px solid var(--dw-violet);
  background: rgba(16, 26, 56, 0.72);
  clip-path: var(--dw-cut-sm);
}

.page-about .ab-steps__no {
  display: block;
  margin-bottom: 6px;
  font-family: var(--dw-mono);
  font-size: var(--dw-fs-12);
  letter-spacing: 0.16em;
  color: var(--dw-violet);
}

.page-about .ab-steps__name {
  margin: 0 0 8px;
  font-family: var(--dw-display);
  font-weight: 800;
  font-size: var(--dw-fs-17);
  line-height: 1.35;
  color: var(--dw-ink);
}

.page-about .ab-steps__desc {
  margin: 0;
  font-size: var(--dw-fs-14);
  line-height: 1.72;
  color: var(--dw-muted);
}

/* ---------- 服务范围 ---------- */
.page-about .ab-scope {
  display: grid;
  gap: 24px;
  margin-top: 28px;
}

.page-about .ab-scope__list {
  margin: 0;
  padding: 4px 20px;
  border-left: 2px solid var(--dw-cyan);
  background: linear-gradient(90deg, rgba(14, 59, 51, 0.85), rgba(16, 26, 56, 0.6) 78%);
  clip-path: var(--dw-cut-sm);
}

.page-about .ab-scope__row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 18px;
  padding: 13px 0;
  border-bottom: 1px dashed rgba(30, 43, 82, 0.9);
}

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

.page-about .ab-scope__row dt {
  font-family: var(--dw-mono);
  font-size: var(--dw-fs-12);
  letter-spacing: 0.10em;
  color: var(--dw-muted);
}

.page-about .ab-scope__row dd {
  margin: 0;
  font-size: var(--dw-fs-14);
  color: var(--dw-ink);
}

.page-about .ab-scope__aside p {
  margin: 0 0 14px;
  max-width: 64ch;
  font-size: var(--dw-fs-14);
  line-height: 1.8;
  color: var(--dw-muted);
}

.page-about .ab-scope__links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 20px !important;
}

/* ---------- 收口 ---------- */
.page-about .ab-close {
  margin-top: 56px;
  padding: 22px 24px;
  border: 1px solid var(--dw-grid);
  background: linear-gradient(120deg, rgba(34, 224, 255, 0.10), rgba(255, 45, 149, 0.10) 60%, rgba(16, 26, 56, 0.9));
  clip-path: var(--dw-cut);
}

.page-about .ab-close__text {
  margin: 0 0 14px;
  max-width: 66ch;
  font-size: var(--dw-fs-17);
  line-height: 1.7;
  color: var(--dw-ink);
}

.page-about .ab-close__links {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-about .ab-charges {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

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

  .page-about .ab-scope__list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 28px;
  }

  .page-about .ab-scope__row:nth-last-child(-n + 2) {
    border-bottom: 0;
  }
}

@media (min-width: 900px) {
  .page-about .ab-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 56px;
    align-items: end;
  }

  .page-about .ab-team__wrap {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 36px;
    align-items: start;
  }

  .page-about .ab-team__card:nth-child(even) {
    margin-top: 26px;
  }

  .page-about .ab-timeline {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 16px;
    padding: 0;
    padding-top: 34px;
  }

  .page-about .ab-timeline::before {
    left: 0;
    right: 0;
    top: 6px;
    bottom: auto;
    width: auto;
    height: 2px;
    background: linear-gradient(90deg, var(--dw-magenta), var(--dw-cyan) 52%, var(--dw-gold));
  }

  .page-about .ab-timeline__item::before {
    left: 0;
    top: -32px;
  }

  .page-about .ab-timeline__stage {
    font-size: var(--dw-fs-14);
  }

  .page-about .ab-scope {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: 40px;
    align-items: start;
  }

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

  .page-about .ab-scope__row:nth-last-child(-n + 2) {
    border-bottom: 1px dashed rgba(30, 43, 82, 0.9);
  }

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

@media (min-width: 1000px) {
  .page-about .ab-body {
    display: grid;
    grid-template-columns: 220px minmax(0, 1fr);
    gap: 56px;
    align-items: start;
    margin-top: 56px;
  }

  .page-about .ab-rail {
    position: sticky;
    top: calc(var(--dw-header-h) + 28px);
    margin-bottom: 0;
  }

  .page-about .ab-rail__list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 6px;
  }

  .page-about .ab-rail__link {
    display: block;
    padding: 8px 12px;
  }
}

@media (max-width: 619px) {
  .page-about {
    padding-bottom: 68px;
  }

  .page-about .ab-sec + .ab-sec {
    margin-top: 40px;
    padding-top: 32px;
  }

  .page-about .ab-charges__note,
  .page-about .ab-close {
    padding: 18px 16px;
  }

  .page-about .ab-net {
    padding: 12px 4px 8px;
  }

  .page-about .ab-scope__list {
    padding: 4px 14px;
  }
}
<<<END>>>