.page-about {
  --skew: -6deg;
  --about-card-bg: rgba(255, 255, 255, 0.06);
  --about-card-border: 1px solid rgba(30, 58, 110, 0.85);
  --about-grad-dark: linear-gradient(135deg, rgba(11, 29, 58, 0.96), rgba(16, 42, 67, 0.88));
  background: var(--color-bg-primary);
  color: var(--color-white);
  overflow-x: hidden;
}

.page-about a {
  color: var(--color-link);
  text-decoration: none;
  transition: color var(--transition);
}

.page-about a:hover,
.page-about a:focus-visible {
  color: var(--color-accent);
}

.page-about img {
  max-width: 100%;
  height: auto;
  display: block;
}

.page-about h1,
.page-about h2,
.page-about h3 {
  font-family: var(--font-heading);
  line-height: 1.2;
}

.page-about h1 {
  font-size: clamp(1.9rem, 5vw, 3rem);
  margin: 0 0 1.25rem;
}

.page-about h2 {
  font-size: clamp(1.5rem, 3.5vw, 2rem);
  margin: 0 0 1rem;
  color: var(--color-white);
}

.page-about h3 {
  font-size: 1.2rem;
  margin: 0 0 0.75rem;
  color: var(--color-white);
}

.page-about .about-kicker {
  display: inline-block;
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-accent);
  border: 1px solid rgba(0, 230, 118, 0.35);
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  margin-bottom: 1rem;
  background: rgba(0, 230, 118, 0.08);
}

/* ===== 封面 ===== */
.page-about .about-cover {
  position: relative;
  background: linear-gradient(140deg, #0B1D3A 0%, #102A43 60%, #1E3A6E 100%);
  padding: 2rem 1rem 3.5rem;
  border-bottom: 4px solid;
  border-image: linear-gradient(90deg, var(--color-accent), var(--color-link), transparent) 1;
}

.page-about .about-cover::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(30, 58, 110, 0.22) 1px, transparent 1px),
    linear-gradient(90deg, rgba(30, 58, 110, 0.22) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(135deg, transparent 25%, black 100%);
  -webkit-mask-image: linear-gradient(135deg, transparent 25%, black 100%);
  pointer-events: none;
}

.page-about .about-cover__grid {
  position: relative;
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: center;
}

.page-about .about-breadcrumb {
  margin-bottom: 1.5rem;
}

.page-about .about-cover__highlight {
  color: var(--color-accent);
  font-style: italic;
}

.page-about .about-cover__lead {
  font-size: 1.08rem;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.88);
  max-width: 580px;
  margin: 0 0 2rem;
}

.page-about .about-cover__stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin: 0;
}

.page-about .about-cover__stat {
  background: var(--about-card-bg);
  border: var(--about-card-border);
  border-radius: 12px;
  padding: 1rem 1.25rem;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.page-about .about-cover__stat dt {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.6);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.page-about .about-cover__stat dd {
  margin: 0;
  font-family: var(--font-heading);
  font-size: 1.8rem;
  color: var(--color-accent);
}

.page-about .about-cover__visual {
  position: relative;
  border: 1px solid var(--color-border);
  border-radius: 12px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.05);
  clip-path: polygon(2% 0, 100% 0, 98% 100%, 0 100%);
}

.page-about .about-cover__img {
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 1 / 1;
}

/* ===== 品牌叙事 ===== */
.page-about .about-narrative {
  background: var(--color-bg-primary);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding: 3rem 1rem;
}

.page-about .about-narrative__grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.page-about .about-narrative__header {
  max-width: 460px;
}

.page-about .about-narrative__principle {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  color: var(--color-accent);
  border-left: 4px solid var(--color-accent);
  padding-left: 1rem;
  margin-top: 1.5rem;
  line-height: 1.5;
}

.page-about .about-narrative__body {
  max-width: 680px;
}

.page-about .about-narrative__lead {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  line-height: 1.7;
  color: var(--color-accent);
  margin: 0 0 1rem;
}

.page-about .about-narrative__body p {
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.8;
  margin: 0 0 1rem;
}

.page-about .about-narrative__link {
  display: inline-block;
  margin-top: 0.5rem;
  font-weight: 600;
  color: var(--color-accent);
}

/* ===== 发展历程 ===== */
.page-about .about-journey {
  background: linear-gradient(180deg, #102A43 0%, #0B1D3A 100%);
  padding: 3.5rem 1rem;
}

.page-about .about-journey__head {
  max-width: 1200px;
  margin: 0 auto 2rem;
}

.page-about .about-journey__desc {
  color: rgba(255, 255, 255, 0.7);
  max-width: 640px;
  line-height: 1.7;
  margin: 0;
}

.page-about .about-journey__layout {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.page-about .about-journey__timeline {
  background: rgba(11, 29, 58, 0.7);
  border: var(--about-card-border);
  border-radius: 16px;
  padding: 1.25rem;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.page-about .about-journey__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: row;
  gap: 0.6rem;
  overflow-x: auto;
  padding-bottom: 0.4rem;
  scrollbar-width: thin;
  scrollbar-color: var(--color-border) transparent;
}

.page-about .about-journey__node {
  flex-shrink: 0;
}

.page-about .about-journey__anchor {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 0.9rem;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background: rgba(255, 255, 255, 0.04);
  color: rgba(255, 255, 255, 0.8);
  white-space: nowrap;
  transition: background var(--transition), border-color var(--transition), color var(--transition);
}

.page-about .about-journey__anchor:hover,
.page-about .about-journey__node:focus-within .about-journey__anchor {
  background: rgba(0, 230, 118, 0.12);
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.page-about .about-journey__year {
  font-family: var(--font-heading);
  font-size: 1rem;
  color: var(--color-accent);
  min-width: 42px;
}

.page-about .about-journey__label {
  font-size: 0.9rem;
}

.page-about .about-journey__content {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.page-about .about-journey__card {
  background: linear-gradient(145deg, rgba(16, 42, 67, 0.9), rgba(11, 29, 58, 0.98));
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-accent);
  border-radius: 14px;
  padding: 1.5rem;
  transition: transform var(--transition), border-color var(--transition);
}

.page-about .about-journey__card:hover {
  transform: translateY(-2px);
  border-left-color: var(--color-link);
}

.page-about .about-journey__card-year {
  display: inline-block;
  background: var(--color-accent);
  color: var(--color-bg-primary);
  font-family: var(--font-heading);
  font-size: 0.85rem;
  border-radius: 6px;
  padding: 0.2rem 0.6rem;
  margin-bottom: 0.75rem;
}

.page-about .about-journey__card p {
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.7;
  margin: 0;
}

.page-about .about-journey__figure {
  margin: 0.5rem 0 0;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.page-about .about-journey__img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ===== 数据服务能力 ===== */
.page-about .about-capability {
  background: linear-gradient(135deg, #0B1D3A 0%, #102A43 70%, #1E3A6E 130%);
  padding: 3.5rem 1rem;
}

.page-about .about-capability__inner {
  max-width: 1200px;
  margin: 0 auto;
}

.page-about .about-capability__header {
  margin-bottom: 2rem;
}

.page-about .about-capability__stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
  margin-bottom: 2rem;
}

.page-about .about-capability__stat {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  background: rgba(11, 29, 58, 0.8);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 1rem 1.25rem;
}

.page-about .about-capability__num {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  color: var(--color-accent);
  white-space: nowrap;
}

.page-about .about-capability__label {
  color: rgba(255, 255, 255, 0.65);
  font-size: 0.85rem;
  text-align: right;
}

.page-about .about-capability__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: center;
}

.page-about .about-capability__text p {
  color: rgba(255, 255, 255, 0.82);
  line-height: 1.8;
  margin: 0 0 1rem;
}

.page-about .about-capability__steps {
  list-style: none;
  counter-reset: aboutCapStep;
  padding: 0;
  margin: 1.25rem 0 1.5rem;
  display: grid;
  gap: 0.5rem;
}

.page-about .about-capability__steps li {
  counter-increment: aboutCapStep;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.7rem 1rem;
  background: rgba(11, 29, 58, 0.7);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  color: rgba(255, 255, 255, 0.85);
}

.page-about .about-capability__steps li::before {
  content: counter(aboutCapStep);
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  background: var(--color-accent);
  color: var(--color-bg-primary);
  font-family: var(--font-heading);
  font-size: 0.8rem;
  border-radius: 6px;
  transform: skewX(-8deg);
  flex-shrink: 0;
}

.page-about .about-capability__cta {
  margin-top: 0.75rem;
}

.page-about .about-capability__figure {
  margin: 0;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  position: relative;
}

.page-about .about-capability__img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ===== 团队与本地化 ===== */
.page-about .about-team-local {
  background: var(--color-bg-muted);
  color: var(--color-text);
  padding: 3.5rem 1rem;
}

.page-about .about-team-local__inner {
  max-width: 1200px;
  margin: 0 auto;
}

.page-about .about-team-local__header {
  margin-bottom: 2rem;
}

.page-about .about-team-local__header .about-kicker {
  color: var(--color-accent);
}

.page-about .about-team-local h2 {
  color: var(--color-text);
}

.page-about .about-team-local h3 {
  color: var(--color-text);
}

.page-about .about-team-local__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.page-about .about-team-local__card {
  background: linear-gradient(145deg, #FFFFFF 0%, #F8FAFF 100%);
  border: 1px solid #D2DAE8;
  border-radius: 16px;
  padding: 2rem;
  box-shadow: 0 8px 24px rgba(11, 29, 58, 0.08);
  position: relative;
}

.page-about .about-team-local__card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 16px;
  right: 16px;
  height: 4px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-link), transparent);
  border-radius: 0 0 8px 8px;
}

.page-about .about-team-local__card p {
  color: var(--color-text);
  line-height: 1.8;
  margin: 0 0 1rem;
}

.page-about .about-team-local__headline {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  margin-bottom: 1rem;
}

.page-about .about-team-local__count {
  font-family: var(--font-heading);
  font-size: 2.4rem;
  color: var(--color-accent);
}

.page-about .about-team-local__count-label {
  font-size: 0.92rem;
  color: var(--color-text);
}

.page-about .about-team-local__roles {
  list-style: none;
  padding: 0;
  margin: 1.25rem 0 0;
  display: grid;
  gap: 0.6rem;
}

.page-about .about-team-local__roles li {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.75rem;
  padding: 0.65rem 0.9rem;
  background: rgba(226, 232, 240, 0.7);
  border-radius: 8px;
  font-size: 0.9rem;
  color: var(--color-text);
}

.page-about .about-team-local__roles strong {
  font-weight: 600;
  color: var(--color-bg-primary);
}

.page-about .about-team-local__chain {
  margin-top: 1.25rem;
  padding: 1rem;
  border: 1px solid #D2DAE8;
  border-radius: 10px;
  background: rgba(226, 232, 240, 0.5);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
}

.page-about .about-team-local__chain-item {
  font-weight: 600;
  color: var(--color-text);
}

.page-about .about-team-local__chain-arrow {
  color: var(--color-link);
  font-weight: 700;
}

.page-about .about-team-local__contact {
  margin-top: 1rem;
  font-size: 0.92rem;
}

.page-about .about-team-local__link {
  display: inline-block;
  margin-top: 0.5rem;
  font-weight: 600;
  color: var(--color-link);
}

/* ===== 底部延伸 ===== */
.page-about .about-more {
  background: var(--color-bg-primary);
  padding: 3rem 1rem;
  text-align: center;
  border-top: 1px solid var(--color-border);
}

.page-about .about-more__inner {
  max-width: 640px;
  margin: 0 auto;
}

.page-about .about-more h2 {
  color: var(--color-white);
}

.page-about .about-more p {
  color: rgba(255, 255, 255, 0.75);
  margin: 0 0 1.5rem;
  line-height: 1.7;
}

.page-about .about-more__actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  justify-content: center;
}

/* ===== 桌面端布局 ===== */
@media (min-width: 900px) {

  .page-about .about-cover {
    padding: 3rem 1.5rem 4.5rem;
  }

  .page-about .about-cover__grid {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 3rem;
  }

  .page-about .about-cover__stats {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-about .about-cover__visual {
    transform: skewX(-3deg);
  }

  .page-about .about-cover__visual::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, transparent 55%, rgba(0, 230, 118, 0.12) 100%);
    pointer-events: none;
  }

  .page-about .about-narrative {
    padding: 4rem 1.5rem;
  }

  .page-about .about-narrative__grid {
    grid-template-columns: 0.85fr 1.15fr;
    gap: 3.5rem;
  }

  .page-about .about-journey {
    padding: 4.5rem 1.5rem;
  }

  .page-about .about-journey__layout {
    grid-template-columns: 300px 1fr;
    align-items: start;
    gap: 2.5rem;
  }

  .page-about .about-journey__timeline {
    position: sticky;
    top: 96px;
    padding: 1.5rem;
  }

  .page-about .about-journey__list {
    flex-direction: column;
    align-items: stretch;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-about .about-journey__node {
    flex-shrink: 1;
    position: relative;
  }

  .page-about .about-journey__anchor {
    border-radius: 10px;
    border-color: transparent;
    white-space: normal;
  }

  .page-about .about-journey__year {
    min-width: 46px;
  }

  .page-about .about-capability {
    padding: 4.5rem 1.5rem;
  }

  .page-about .about-capability__stats {
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
  }

  .page-about .about-capability__stat {
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 1.5rem 1.25rem;
  }

  .page-about .about-capability__label {
    text-align: center;
  }

  .page-about .about-capability__num {
    font-size: 2rem;
  }

  .page-about .about-capability__grid {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 3rem;
  }

  .page-about .about-team-local {
    padding: 4.5rem 1.5rem;
  }

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

  .page-about .about-more {
    padding: 4rem 1.5rem;
  }
}