.page-about {
  --about-accent: #00E5FF;
  --about-accent-dark: #0A66C2;
  --about-surface: #1A1F2E;
  --about-border: #2D354A;
  --about-text-primary: #F0F4F8;
  --about-text-secondary: #9AA3B5;
  --about-text-muted: #8C9CAB;
  --about-font-heading: 'Exo 2', 'Orbitron', system-ui, sans-serif;
  --about-font-body: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --about-radius: 12px;
  --about-transition: 0.3s ease;
  max-width: 100%;
  margin: 0 auto;
  background-color: #0B0D17;
  color: var(--about-text-primary);
  font-family: var(--about-font-body);
  line-height: 1.6;
  padding-top: 2rem;
}

/* 面包屑 */
.about-breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--about-text-muted);
  margin-bottom: 1.5rem;
}
.about-breadcrumb a {
  color: var(--about-text-secondary);
  text-decoration: none;
  transition: color var(--about-transition);
}
.about-breadcrumb a:hover {
  color: var(--about-accent);
}
.breadcrumb-sep {
  color: var(--about-border);
}

/* 首屏区域 */
.about-hero {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  padding: 0 1.5rem 3rem;
  position: relative;
}
.about-hero-text {
  order: 1;
}
.about-title {
  font-family: var(--about-font-heading);
  font-weight: 800;
  font-size: clamp(2rem, 6vw, 3.5rem);
  line-height: 1.1;
  margin: 0 0 1rem;
  background: linear-gradient(135deg, var(--about-accent), var(--about-accent-dark));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.about-subtitle {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--about-text-secondary);
  max-width: 650px;
  margin: 0;
}
.about-hero-visual {
  order: 0;
  display: flex;
  justify-content: center;
  align-items: center;
}
.about-map-svg {
  width: 100%;
  max-width: 500px;
  height: auto;
  aspect-ratio: 5 / 6;
  object-fit: contain;
  filter: drop-shadow(0 0 15px rgba(0, 229, 255, 0.15));
}

/* 通用区块 */
.about-section {
  padding: 2.5rem 1.5rem;
  border-bottom: 1px solid var(--about-border);
}
.about-section:last-of-type {
  border-bottom: none;
}
.about-section-heading {
  font-family: var(--about-font-heading);
  font-weight: 700;
  font-size: clamp(1.5rem, 4vw, 2rem);
  margin: 0 0 1.5rem;
  color: var(--about-accent);
  position: relative;
  display: inline-block;
}
.about-section-heading::after {
  content: '';
  display: block;
  width: 60px;
  height: 4px;
  background: var(--about-accent);
  margin-top: 0.5rem;
  border-radius: 2px;
}
.about-section-copy {
  font-size: 1rem;
  color: var(--about-text-secondary);
  margin: 0 0 1rem;
  max-width: 720px;
}

/* 品牌使命 */
.about-mission {
  background: linear-gradient(135deg, rgba(10, 102, 194, 0.08) 0%, transparent 60%);
}
.about-mission-content {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  align-items: center;
}
.about-mission-icon {
  flex-shrink: 0;
}
.about-icon-img {
  width: 120px;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: contain;
  filter: drop-shadow(0 0 10px rgba(0, 229, 255, 0.2));
}

/* 服务范围 */
.about-services-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  margin: 2rem 0;
}
.about-service-card {
  background: var(--about-surface);
  border: 1px solid var(--about-border);
  border-radius: var(--about-radius);
  padding: 1.5rem;
  transition: transform var(--about-transition), box-shadow var(--about-transition);
  position: relative;
  cursor: default;
}
.about-service-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 229, 255, 0.08);
  border-color: var(--about-accent);
}
.about-service-card::after {
  content: attr(data-hover-label);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%) scale(0);
  background: var(--about-accent-dark);
  color: #fff;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.75rem;
  white-space: nowrap;
  opacity: 0;
  transition: transform 0.2s ease, opacity 0.2s ease;
  pointer-events: none;
}
.about-service-card:hover::after {
  transform: translateX(-50%) scale(1);
  opacity: 1;
}
.about-service-number {
  font-family: var(--about-font-heading);
  font-size: 2rem;
  font-weight: 800;
  color: var(--about-accent);
  margin-bottom: 0.5rem;
  line-height: 1;
}
.about-service-title {
  font-family: var(--about-font-heading);
  font-weight: 600;
  font-size: 1.15rem;
  margin: 0 0 0.5rem;
  color: var(--about-text-primary);
}
.about-service-desc {
  font-size: 0.9rem;
  color: var(--about-text-muted);
  margin: 0;
  line-height: 1.5;
}
.about-section-cta {
  margin-top: 1rem;
  color: var(--about-text-secondary);
}
.about-section-cta a {
  color: var(--about-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.about-section-cta a:hover {
  color: var(--about-accent-dark);
}

/* 可信承诺 */
.about-trust {
  background: linear-gradient(135deg, transparent 0%, rgba(0, 229, 255, 0.04) 100%);
}
.about-trust-wrapper {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  align-items: center;
}
.about-trust-badge {
  flex-shrink: 0;
}
.about-badge-img {
  width: 180px;
  height: auto;
  aspect-ratio: 5 / 2;
  object-fit: contain;
}
.about-trust-text {
  max-width: 720px;
}

/* 滚动渐入动画 */
.about-section {
  opacity: 0;
  animation: aboutFadeIn 0.6s ease forwards;
}
.about-section:nth-of-type(1) { animation-delay: 0.1s; }
.about-section:nth-of-type(2) { animation-delay: 0.2s; }
.about-section:nth-of-type(3) { animation-delay: 0.3s; }
@keyframes aboutFadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 桌面端布局 */
@media (min-width: 768px) {
  .page-about {
    padding-top: 3rem;
  }
  .about-hero {
    flex-direction: row;
    align-items: center;
    padding: 0 3rem 4rem;
    gap: 3rem;
  }
  .about-hero-text {
    order: 0;
    flex: 1 1 60%;
  }
  .about-hero-visual {
    order: 1;
    flex: 0 0 40%;
    justify-content: flex-end;
  }
  .about-map-svg {
    max-width: 100%;
  }
  .about-section {
    padding: 3rem 3rem;
  }
  .about-mission-content {
    flex-direction: row;
    align-items: flex-start;
    max-width: 1000px;
  }
  .about-services-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
  }
  .about-service-card {
    padding: 2rem;
  }
  .about-trust-wrapper {
    flex-direction: row;
    align-items: flex-start;
    gap: 2rem;
  }
  .about-trust-badge {
    flex: 0 0 220px;
  }
  .about-badge-img {
    width: 100%;
  }
}

@media (min-width: 1024px) {
  .about-hero {
    padding: 0 4rem 5rem;
  }
  .about-section {
    padding: 4rem 4rem;
  }
  .about-title {
    font-size: 3.5rem;
  }
}
</PAGE_CSS>