.page-about {
  --about-gap: clamp(2.5rem, 7vw, 5.5rem);
  --about-rail: 6.5rem;
  --about-soft: rgba(234, 241, 251, .06);
  background: var(--ink-900);
  color: var(--text);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding-block: clamp(1.5rem, 4vw, 2.5rem) clamp(3rem, 8vw, 5.5rem);
  border-bottom: 1px solid var(--line);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  top: -18%;
  right: -20%;
  width: min(62vw, 640px);
  aspect-ratio: 1;
  border-radius: 44% 56% 62% 38% / 52% 40% 60% 48%;
  background: radial-gradient(circle at 34% 34%, rgba(31, 111, 235, .30), rgba(31, 111, 235, 0) 70%);
  pointer-events: none;
  z-index: 0;
}

.page-about .about-hero > .container {
  position: relative;
  z-index: 1;
}

.page-about .about-topline {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: .6rem 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line);
}

.page-about .section-readout {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .6875rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.page-about .about-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 3.5rem);
  margin-top: clamp(1.75rem, 4vw, 3rem);
}

.page-about .about-hero-lead h1 {
  max-width: 22ch;
}

.page-about .about-hero-lead .lead {
  margin-top: 1.25rem;
  max-width: 58ch;
}

.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  margin-top: 1.75rem;
}

.page-about .about-hero-side {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .85rem;
  align-content: start;
}

.page-about .about-fact {
  display: flex;
  flex-direction: column;
  gap: .4rem;
  padding: 1.15rem 1.1rem 1.3rem;
  border-radius: var(--radius-m);
  border: 1px solid var(--line);
  background: var(--about-soft);
}

.page-about .about-fact--blue {
  background: linear-gradient(160deg, rgba(31, 111, 235, .40), rgba(19, 28, 43, .92));
  border-color: rgba(76, 154, 255, .38);
}

.page-about .about-fact--clay {
  background: linear-gradient(160deg, rgba(184, 107, 75, .40), rgba(19, 28, 43, .92));
  border-color: rgba(184, 107, 75, .48);
}

.page-about .about-fact--bone {
  background: var(--bone);
  border-color: transparent;
}

.page-about .about-fact-num {
  font-size: clamp(1.35rem, 4vw, 1.9rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--text);
}

.page-about .about-fact-label {
  font-size: .8125rem;
  line-height: 1.5;
  color: var(--text-dim);
}

.page-about .about-fact--bone .about-fact-num {
  color: var(--ink-900);
}

.page-about .about-fact--bone .about-fact-label {
  color: rgba(11, 18, 32, .72);
}

/* ---------- 起点与定位 ---------- */
.page-about .about-origin {
  padding-block: var(--about-gap);
}

.page-about .about-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.25rem, 3vw, 3rem);
}

.page-about .about-split-head h2 {
  max-width: 16ch;
}

.page-about .about-split-body p {
  margin-bottom: 1.1rem;
}

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

.page-about .about-pillars {
  list-style: none;
  margin: clamp(2rem, 5vw, 3.25rem) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1rem;
}

.page-about .about-pillar {
  padding: 1.5rem 1.35rem 1.65rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-l) var(--radius-s) var(--radius-l) var(--radius-l);
  background: linear-gradient(170deg, rgba(31, 111, 235, .16), rgba(11, 18, 32, 0) 72%);
}

.page-about .about-pillar:nth-child(2) {
  background: linear-gradient(170deg, rgba(43, 217, 168, .13), rgba(11, 18, 32, 0) 72%);
  border-radius: var(--radius-s) var(--radius-l) var(--radius-s) var(--radius-l);
}

.page-about .about-pillar:nth-child(3) {
  background: linear-gradient(170deg, rgba(184, 107, 75, .18), rgba(11, 18, 32, 0) 72%);
}

.page-about .about-pillar .mono {
  display: block;
  margin-bottom: .85rem;
  font-size: .6875rem;
  letter-spacing: .18em;
  color: var(--blue-400);
}

.page-about .about-pillar h3 {
  margin: 0 0 .6rem;
  font-size: 1.125rem;
}

.page-about .about-pillar p {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.75;
  color: var(--text-dim);
}

/* ---------- 发展历程 ---------- */
.page-about .about-timeline {
  padding-block: var(--about-gap);
}

.page-about .about-timeline h2 {
  max-width: 22ch;
}

.page-about .about-timeline-figure {
  margin: clamp(1.75rem, 4vw, 2.75rem) 0 clamp(2rem, 5vw, 3.25rem);
}

.page-about .about-tl {
  list-style: none;
  margin: 0;
  padding: 0 0 0 1.5rem;
  border-left: 1px solid var(--line);
}

.page-about .about-tl-item {
  position: relative;
  padding-bottom: 2.25rem;
}

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

.page-about .about-tl-item::before {
  content: "";
  position: absolute;
  left: calc(-1.5rem - 5px);
  top: .5rem;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--ink-900);
  border: 2px solid var(--blue-600);
}

.page-about .about-tl-item:first-child::before {
  background: var(--signal);
  border-color: var(--signal);
  box-shadow: 0 0 0 5px rgba(255, 90, 54, .18);
}

.page-about .about-tl-year {
  display: block;
  margin-bottom: .45rem;
  font-size: .875rem;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--clay);
}

.page-about .about-tl-item:first-child .about-tl-year {
  color: var(--signal);
}

.page-about .about-tl-body h3 {
  margin: 0 0 .6rem;
  font-size: clamp(1.125rem, 2.4vw, 1.4rem);
}

.page-about .about-tl-body p {
  margin: 0;
  max-width: 62ch;
  color: var(--text-dim);
  line-height: 1.8;
}

/* ---------- 团队分工 ---------- */
.page-about .about-team {
  padding-block: var(--about-gap);
}

.page-about .about-team h2 {
  max-width: 20ch;
}

.page-about .about-team-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.5rem, 4vw, 2.75rem);
  margin-top: clamp(1.75rem, 4vw, 2.75rem);
}

.page-about .about-team-list {
  display: flex;
  flex-direction: column;
}

.page-about .about-team-row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0 1.25rem;
  align-items: baseline;
  padding: 1.35rem 0;
  border-top: 1px solid var(--line);
}

.page-about .about-team-row:last-child {
  border-bottom: 1px solid var(--line);
}

.page-about .about-team-count {
  font-size: clamp(1.75rem, 5vw, 2.4rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.03em;
  color: var(--blue-400);
}

.page-about .about-team-row:nth-child(2) .about-team-count {
  color: var(--state);
}

.page-about .about-team-row:nth-child(3) .about-team-count {
  color: var(--warn);
}

.page-about .about-team-body h3 {
  margin: 0 0 .45rem;
  font-size: 1.0625rem;
}

.page-about .about-team-body p {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--text-dim);
}

/* ---------- 更新节奏 ---------- */
.page-about .about-cadence {
  padding-block: var(--about-gap);
}

.page-about .about-cadence-head {
  max-width: 62ch;
}

.page-about .about-cadence-head h2 {
  max-width: 20ch;
}

.page-about .about-cadence-head .lead {
  margin-top: 1.1rem;
}

.page-about .about-cadence-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1rem;
  margin-top: clamp(1.75rem, 4vw, 2.75rem);
}

.page-about .about-cadence-card {
  padding: 1.6rem 1.4rem 1.75rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  background: var(--about-soft);
}

.page-about .about-cadence-card--blue {
  background: linear-gradient(155deg, rgba(31, 111, 235, .24), rgba(11, 18, 32, .9));
  border-color: rgba(76, 154, 255, .32);
}

.page-about .about-cadence-card--clay {
  background: linear-gradient(155deg, rgba(184, 107, 75, .26), rgba(11, 18, 32, .9));
  border-color: rgba(184, 107, 75, .42);
}

.page-about .about-cadence-card h3 {
  margin: 0 0 .7rem;
  font-size: 1.125rem;
}

.page-about .about-cadence-card p {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--text-dim);
}

.page-about .about-taglist {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin: 1.15rem 0 0;
  padding: 0;
}

/* ---------- 合作与荣誉 ---------- */
.page-about .about-eco {
  padding-block: var(--about-gap);
}

.page-about .about-eco h2 {
  max-width: 26ch;
}

.page-about .about-eco-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.75rem, 4vw, 3rem);
  margin-top: clamp(1.75rem, 4vw, 2.75rem);
}

.page-about .about-eco-copy p {
  margin-bottom: 1.1rem;
}

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

.page-about .about-badges {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: .85rem;
}

.page-about .about-badge {
  display: grid;
  grid-template-columns: 4.25rem minmax(0, 1fr);
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  background:
    radial-gradient(circle at 12% 50%, rgba(184, 107, 75, .22), rgba(11, 18, 32, 0) 62%),
    var(--about-soft);
  transition: transform .28s var(--ease), border-color .28s var(--ease);
}

.page-about .about-badge:hover,
.page-about .about-badge:focus-within {
  transform: translateY(-2px);
  border-color: rgba(184, 107, 75, .55);
}

.page-about .about-badge-mark {
  display: grid;
  place-items: center;
  width: 4.25rem;
  height: 4.25rem;
  border-radius: 42% 58% 54% 46% / 50% 44% 56% 50%;
  font-size: .8125rem;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--bone);
  background: linear-gradient(150deg, rgba(184, 107, 75, .82), rgba(255, 90, 54, .48));
}

.page-about .about-badge-body h3 {
  margin: 0 0 .3rem;
  font-size: 1rem;
}

.page-about .about-badge-body p {
  margin: 0;
  font-size: .8125rem;
  line-height: 1.6;
  color: var(--text-dim);
}

/* ---------- 陕西在地 ---------- */
.page-about .about-local {
  padding-block: var(--about-gap);
}

.page-about .about-local-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.75rem, 4vw, 3rem);
  align-items: center;
}

.page-about .about-local-figure {
  border-radius: var(--radius-l) var(--radius-m) var(--radius-l) var(--radius-s);
}

.page-about .about-local-body h2 {
  max-width: 18ch;
}

.page-about .about-local-body > p {
  margin-top: 1.1rem;
  max-width: 60ch;
  color: var(--text-dim);
  line-height: 1.8;
}

.page-about .about-local-facts {
  margin: clamp(1.5rem, 4vw, 2rem) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  overflow: hidden;
}

.page-about .about-local-fact {
  padding: 1rem 1.1rem 1.15rem;
  background: var(--ink-800);
}

.page-about .about-local-fact dt {
  margin: 0 0 .35rem;
  font-size: .75rem;
  letter-spacing: .06em;
  color: var(--text-dim);
}

.page-about .about-local-fact dd {
  margin: 0;
  font-size: .9375rem;
  color: var(--text);
  overflow-wrap: anywhere;
}

.page-about .about-local-fact dd.mono {
  font-size: .875rem;
  color: var(--blue-400);
}

/* ---------- 收尾 ---------- */
.page-about .about-next {
  padding-block: var(--about-gap);
}

.page-about .about-next-inner {
  position: relative;
  padding: clamp(1.75rem, 5vw, 3rem);
  border-radius: var(--radius-l);
  border: 1px solid rgba(31, 111, 235, .34);
  background:
    linear-gradient(150deg, rgba(31, 111, 235, .26), rgba(11, 18, 32, .94) 68%);
  overflow: hidden;
}

.page-about .about-next-inner::after {
  content: "";
  position: absolute;
  right: -10%;
  bottom: -40%;
  width: min(46vw, 380px);
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 90, 54, .26), rgba(255, 90, 54, 0) 68%);
  pointer-events: none;
}

.page-about .about-next-inner > * {
  position: relative;
  z-index: 1;
}

.page-about .about-next-inner h2 {
  max-width: 24ch;
}

.page-about .about-next-inner p {
  margin-top: 1rem;
  max-width: 58ch;
  color: var(--text-dim);
  line-height: 1.8;
}

.page-about .about-next-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  margin-top: 1.75rem;
}

.page-about .about-top-link {
  display: inline-block;
  margin-top: clamp(1.5rem, 4vw, 2.25rem);
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .12em;
  color: var(--text-dim);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  padding-bottom: .2rem;
}

.page-about .about-top-link:hover,
.page-about .about-top-link:focus-visible {
  color: var(--blue-400);
  border-bottom-color: var(--blue-400);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .about-badges {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 860px) {
  .page-about .about-split {
    grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr);
    align-items: start;
  }

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

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

  .page-about .about-cadence-card--blue {
    grid-column: span 2;
  }

  .page-about .about-local-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  }
}

@media (min-width: 900px) {
  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 1.32fr) minmax(0, .82fr);
    align-items: end;
  }

  .page-about .about-hero-side > :nth-child(even) {
    transform: translateY(22px);
  }

  .page-about .about-team-grid {
    grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr);
    align-items: start;
  }

  .page-about .about-eco-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    align-items: start;
  }
}

@media (min-width: 800px) {
  .page-about .about-tl {
    padding-left: 2rem;
  }

  .page-about .about-tl-item {
    display: grid;
    grid-template-columns: 5.5rem minmax(0, 1fr);
    gap: 1.75rem;
    align-items: start;
  }

  .page-about .about-tl-item::before {
    left: calc(-2rem - 5px);
    top: .6rem;
  }

  .page-about .about-tl-year {
    margin-bottom: 0;
    padding-top: .15rem;
    text-align: right;
    font-size: 1rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-badge,
  .page-about .about-hero-side > :nth-child(even) {
    transition: none;
    transform: none;
  }
}
</final>
</PAGE_CSS>