.page-about {
  --about-text: #26313B;
  --about-soft: #5B6B7C;
  --about-rule: #C9D6E2;
  --about-stack: rgba(232, 238, 244, .95);
  background: var(--ax-white);
  color: var(--ax-ink);
}

.page-about p {
  margin: 0 0 .9rem;
}

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

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  background: var(--ax-paper);
  border-bottom: 1px solid var(--about-rule);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 6px;
  background: linear-gradient(90deg,
    var(--ax-orange) 0 33.4%,
    var(--ax-blue) 33.4% 66.7%,
    var(--ax-teal) 66.7% 100%);
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
  padding-top: clamp(2.2rem, 6vw, 4.5rem);
  padding-bottom: clamp(1.9rem, 5vw, 3.4rem);
}

.page-about .about-crumb {
  margin-bottom: clamp(1.2rem, 3vw, 1.9rem);
}

.page-about .about-hero__eyebrow {
  margin: 0 0 .9rem;
  font-size: .74rem;
  letter-spacing: .2em;
  color: var(--ax-orange);
  text-transform: uppercase;
}

.page-about .about-hero__title {
  margin: 0 0 1.1rem;
  max-width: 22ch;
  font-size: clamp(2rem, 6.6vw, 4.1rem);
  line-height: 1.12;
  letter-spacing: -.02em;
  font-weight: 800;
  color: var(--ax-ink);
}

.page-about .about-hero__lead {
  max-width: 58ch;
  font-size: clamp(.98rem, 2.2vw, 1.1rem);
  line-height: 1.9;
  color: var(--about-text);
}

.page-about .about-hero__ghost {
  position: absolute;
  right: -.5rem;
  bottom: -2.4rem;
  font-size: clamp(7rem, 22vw, 15rem);
  line-height: 1;
  font-weight: 700;
  color: transparent;
  -webkit-text-stroke: 1px rgba(10, 77, 140, .14);
  pointer-events: none;
  user-select: none;
}

.page-about .about-kpi__list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(1.6rem, 4vw, 2.4rem) 0 0;
  padding: 1px;
  background: var(--about-rule);
  border: 1px solid var(--about-rule);
}

.page-about .about-kpi__item {
  background: var(--ax-white);
  padding: .95rem 1rem 1rem;
  border-top: 3px solid var(--ax-orange);
}

.page-about .about-kpi__value {
  margin: 0;
  font-family: var(--ax-mono);
  font-size: clamp(1.35rem, 4.4vw, 1.95rem);
  font-weight: 700;
  letter-spacing: -.02em;
  color: var(--ax-blue);
}

.page-about .about-kpi__unit {
  font-size: .72em;
  margin-left: .15rem;
  color: var(--ax-orange);
}

.page-about .about-kpi__label {
  margin: .3rem 0 0;
  font-size: .78rem;
  line-height: 1.5;
  color: var(--about-soft);
}

/* ---------- 档案长卷骨架 ---------- */
.page-about .about-dossier {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  padding-top: 1.2rem;
  padding-bottom: clamp(1rem, 4vw, 2.5rem);
}

.page-about .about-index {
  padding: .9rem 0 1rem;
  border-bottom: 1px solid var(--about-rule);
}

.page-about .about-index__title {
  margin: 0 0 .6rem;
  font-size: .72rem;
  letter-spacing: .2em;
  color: var(--ax-orange);
  text-transform: uppercase;
}

.page-about .about-index__list {
  list-style: none;
  display: flex;
  gap: .45rem;
  margin: 0;
  padding: 0 0 .35rem;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-about .about-index__link {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  white-space: nowrap;
  padding: .42rem .68rem;
  border: 1px solid var(--about-rule);
  background: var(--ax-white);
  color: var(--ax-ink);
  font-size: .84rem;
  text-decoration: none;
  transition: border-color .16s ease, color .16s ease, background-color .16s ease;
}

.page-about .about-index__num {
  font-size: .7rem;
  letter-spacing: .08em;
  color: var(--ax-teal);
}

.page-about .about-index__link:hover {
  border-color: var(--ax-cyan);
  color: var(--ax-blue);
  background: var(--ax-mist);
}

.page-about .about-index__link:focus-visible {
  outline: none;
  box-shadow: var(--ax-focus);
}

.page-about .about-flow {
  min-width: 0;
}

.page-about .about-chapter {
  padding: clamp(1.9rem, 5vw, 3.1rem) 0;
  border-top: 1px solid var(--about-rule);
}

.page-about .about-chapter__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: .6rem;
  margin-bottom: 1.1rem;
}

.page-about .about-chapter__num {
  flex: none;
  padding: .16rem .48rem;
  background: var(--ax-orange);
  color: var(--ax-white);
  font-size: .76rem;
  letter-spacing: .1em;
}

.page-about .about-chapter__title {
  margin: 0;
  font-size: clamp(1.35rem, 3.6vw, 2rem);
  line-height: 1.28;
  letter-spacing: -.01em;
  color: var(--ax-ink);
}

.page-about .about-chapter__lead {
  max-width: 62ch;
  line-height: 1.85;
  color: var(--about-text);
  margin-bottom: 1.2rem;
}

.page-about .about-origin__text p,
.page-about .about-team__text > p {
  line-height: 1.88;
  color: var(--about-text);
}

/* ---------- 图文与纸张叠层 ---------- */
.page-about .about-figure {
  margin: 1.3rem 0 0;
  padding: .55rem .55rem .5rem;
  background: var(--ax-white);
  border: 1px solid var(--about-rule);
  box-shadow: 9px 9px 0 var(--about-stack);
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border: 1px solid var(--about-rule);
}

.page-about .about-figure--wide img {
  aspect-ratio: 1000 / 650;
}

.page-about .about-figure--portrait img {
  aspect-ratio: 3 / 2;
}

.page-about .about-figure__cap {
  padding-top: .5rem;
  font-family: var(--ax-mono);
  font-size: .7rem;
  letter-spacing: .04em;
  color: var(--about-soft);
}

/* ---------- 阶段时间轴 ---------- */
.page-about .about-timeline {
  list-style: none;
  display: grid;
  gap: 1rem;
  margin: 1.4rem 0 0;
  padding: 0;
}

.page-about .about-phase {
  position: relative;
  background: var(--ax-white);
  border: 1px solid var(--about-rule);
  border-left: 4px solid var(--ax-blue);
  padding: 1.05rem 1.05rem 1.15rem;
  box-shadow: 6px 6px 0 var(--about-stack);
  transition: transform .18s ease, box-shadow .18s ease, border-left-color .18s ease;
}

.page-about .about-phase:hover {
  transform: translateY(-3px);
  box-shadow: 9px 11px 0 var(--about-stack);
  border-left-color: var(--ax-orange);
}

.page-about .about-phase__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: .55rem;
  margin-bottom: .55rem;
}

.page-about .about-phase__step {
  font-size: .7rem;
  letter-spacing: .16em;
  color: var(--ax-orange);
}

.page-about .about-phase__name {
  margin: 0;
  font-size: 1.08rem;
  line-height: 1.4;
  color: var(--ax-ink);
}

.page-about .about-phase__body {
  margin: 0;
  font-size: .93rem;
  line-height: 1.85;
  color: var(--about-text);
}

.page-about .about-phase__tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
  margin: .85rem 0 0;
  padding: 0;
}

.page-about .about-chip {
  padding: .18rem .5rem;
  font-family: var(--ax-mono);
  font-size: .68rem;
  letter-spacing: .05em;
  color: var(--ax-blue);
  background: var(--ax-paper);
  border: 1px solid var(--about-rule);
}

/* ---------- 服务版图 ---------- */
.page-about .about-plate {
  margin-top: 1.2rem;
  padding: clamp(1.1rem, 3.6vw, 1.9rem);
  background: var(--ax-mist);
  border: 1px solid var(--about-rule);
}

.page-about .about-plate__lead {
  max-width: 62ch;
  line-height: 1.88;
  color: var(--about-text);
}

.page-about .about-plate .about-figure {
  margin-top: 1.2rem;
  box-shadow: 9px 9px 0 rgba(255, 255, 255, .9);
}

.page-about .about-caps {
  list-style: none;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin: 1.3rem 0 0;
  padding: 1px;
  background: var(--about-rule);
  border: 1px solid var(--about-rule);
}

.page-about .about-cap {
  background: var(--ax-white);
  padding: 1rem 1.05rem 1.1rem;
  transition: background-color .16s ease;
}

.page-about .about-cap:hover {
  background: var(--ax-paper);
}

.page-about .about-cap__name {
  display: flex;
  align-items: baseline;
  gap: .5rem;
  margin: 0 0 .4rem;
  font-size: .98rem;
  line-height: 1.5;
  color: var(--ax-ink);
}

.page-about .about-cap__idx {
  font-size: .72rem;
  color: var(--ax-teal);
  border: 1px solid var(--ax-teal);
  padding: 0 .28rem;
  line-height: 1.5;
}

.page-about .about-cap p {
  margin: 0;
  font-size: .9rem;
  line-height: 1.82;
  color: var(--about-text);
}

/* ---------- 团队 ---------- */
.page-about .about-team-wrap {
  min-width: 0;
}

.page-about .about-team {
  list-style: none;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1rem;
  margin: 1.3rem 0 0;
  padding: 0;
}

.page-about .about-team__item {
  padding: .15rem 0 .15rem .9rem;
  border-left: 3px solid var(--ax-teal);
}

.page-about .about-team__name {
  margin: 0 0 .3rem;
  font-size: .98rem;
  color: var(--ax-ink);
}

.page-about .about-team__desc {
  margin: 0;
  font-size: .89rem;
  line-height: 1.82;
  color: var(--about-text);
}

/* ---------- 合作生态折叠 ---------- */
.page-about .about-fold {
  margin-top: .7rem;
  background: var(--ax-white);
  border: 1px solid var(--about-rule);
  border-left: 3px solid var(--ax-gold);
}

.page-about .about-fold summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: .85rem 1rem;
  cursor: pointer;
  font-size: .95rem;
  line-height: 1.6;
  font-weight: 700;
  color: var(--ax-ink);
  list-style: none;
}

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

.page-about .about-fold summary::after {
  content: "+";
  flex: none;
  font-family: var(--ax-mono);
  font-size: 1.1rem;
  color: var(--ax-orange);
}

.page-about .about-fold[open] summary::after {
  content: "–";
}

.page-about .about-fold summary:focus-visible {
  outline: none;
  box-shadow: var(--ax-focus);
}

.page-about .about-fold__body {
  padding: .85rem 1rem 1rem;
  border-top: 1px dashed var(--about-rule);
  font-size: .9rem;
  line-height: 1.85;
  color: var(--about-text);
}

/* ---------- 未来方向 ---------- */
.page-about .about-future {
  margin: clamp(1.6rem, 4vw, 2.6rem) 0 0;
  padding: clamp(1.4rem, 4.5vw, 2.4rem);
  background: var(--ax-navy);
  color: #EAF1F7;
}

.page-about .about-chapter__num--on-dark {
  background: var(--ax-cyan);
  color: var(--ax-navy);
}

.page-about .about-chapter__title--on-dark {
  color: #FFFFFF;
}

.page-about .about-future__lead {
  max-width: 60ch;
  line-height: 1.85;
  color: rgba(234, 241, 247, .84);
}

.page-about .about-future__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.1rem;
  margin-top: 1.3rem;
}

.page-about .about-future__item {
  padding-top: .8rem;
  border-top: 1px solid rgba(255, 255, 255, .22);
}

.page-about .about-future__num {
  margin: 0 0 .35rem;
  font-size: .7rem;
  letter-spacing: .16em;
  color: var(--ax-orange);
}

.page-about .about-future__title {
  margin: 0 0 .35rem;
  font-size: 1.02rem;
  line-height: 1.5;
  color: #FFFFFF;
}

.page-about .about-future__text {
  margin: 0;
  font-size: .89rem;
  line-height: 1.82;
  color: rgba(234, 241, 247, .82);
}

/* ---------- 收尾 ---------- */
.page-about .about-cta {
  margin-top: clamp(1.8rem, 5vw, 2.8rem);
  padding-top: clamp(1.4rem, 4vw, 2.2rem);
  border-top: 1px solid var(--about-rule);
}

.page-about .about-cta__title {
  margin: 0 0 .6rem;
  font-size: clamp(1.25rem, 3.4vw, 1.7rem);
  line-height: 1.35;
  color: var(--ax-ink);
}

.page-about .about-cta__lead {
  max-width: 58ch;
  line-height: 1.85;
  color: var(--about-text);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .7rem;
  margin-top: 1.1rem;
}

.page-about .about-cta__actions .ax-link-arrow {
  color: var(--ax-blue);
}

.page-about .about-cta__actions .ax-link-arrow:focus-visible,
.page-about .about-cta__actions .ax-btn:focus-visible {
  outline: none;
  box-shadow: var(--ax-focus);
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 720px) {
  .page-about .about-caps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-team {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.2rem 1.8rem;
  }

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

@media (min-width: 900px) {
  .page-about .about-kpi__list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-dossier {
    grid-template-columns: 208px minmax(0, 1fr);
    gap: clamp(1.6rem, 3vw, 3rem);
    padding-top: 2.4rem;
  }

  .page-about .about-index {
    position: sticky;
    top: 108px;
    align-self: start;
    padding: 0;
    border-bottom: 0;
    border-left: 2px solid var(--ax-orange);
    padding-left: 1rem;
  }

  .page-about .about-index__list {
    flex-direction: column;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-about .about-index__link {
    border-color: transparent;
    border-left: 0;
    background: transparent;
    padding: .38rem .2rem;
    width: 100%;
  }

  .page-about .about-index__link:hover {
    background: transparent;
    border-color: transparent;
    color: var(--ax-orange);
  }

  .page-about .about-flow {
    border-left: 1px solid var(--about-rule);
    padding-left: clamp(1.4rem, 3vw, 2.6rem);
  }

  .page-about .about-chapter {
    border-top: 0;
    padding-top: 0;
    padding-bottom: clamp(2rem, 4vw, 3.1rem);
  }

  .page-about .about-chapter:first-child {
    border-top: 0;
  }

  .page-about .about-origin {
    display: grid;
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(1.4rem, 3vw, 2.4rem);
    align-items: start;
  }

  .page-about .about-origin .about-figure {
    margin-top: 0;
  }

  .page-about .about-team-wrap {
    display: grid;
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
    gap: clamp(1.4rem, 3vw, 2.4rem);
    align-items: start;
  }

  .page-about .about-team-wrap .about-figure {
    margin-top: 0;
  }

  .page-about .about-team {
    grid-template-columns: minmax(0, 1fr);
    gap: 1rem;
  }

  .page-about .about-future {
    padding: clamp(1.8rem, 3vw, 2.6rem);
  }
}

@media (min-width: 1080px) {
  .page-about .about-hero__title {
    max-width: 24ch;
  }

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