.page-about {
  --pd-hero: #0A1F44;
  --pd-hero-accent: #D4AF37;
  --pd-hero-light: #FFFFFF;
  --pd-card-bg: rgba(212,175,55,0.08);
  --pd-radius: 8px;

  background-color: var(--pd-hero);
  color: var(--pd-hero-light);
  position: relative;
  overflow: hidden;
}

/* 背景纹理（装饰性，用伪元素实现） */
.page-about::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url('{zhanqunpic:h:1080w:1920}');
  background-size: 1920px 1080px;
  background-repeat: repeat;
  opacity: 0.04;
  pointer-events: none;
  z-index: 0;
}

.page-about__wrapper {
  position: relative;
  z-index: 1;
  padding: var(--spacing-xl) var(--spacing-md);
  max-width: var(--container-max);
  margin: 0 auto;
}

/* Hero section */
.page-about__hero {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-2xl);
}

.page-about__hero-text {
  flex: 1;
}

.page-about__heading {
  font-family: var(--font-heading);
  font-weight: var(--fw-heading);
  font-size: var(--fs-h1);
  letter-spacing: -1px;
  color: var(--pd-hero-accent);
  margin: 0 0 var(--spacing-sm);
  line-height: 1;
}

.section-marker {
  display: flex;
  align-items: baseline;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.section-marker__number {
  font-family: var(--font-data);
  font-weight: 500;
  font-size: var(--fs-h3);
  color: var(--pd-hero-accent);
  opacity: 0.6;
}

.section-marker__title {
  font-family: var(--font-heading);
  font-weight: var(--fw-heading);
  font-size: var(--fs-h2);
  color: var(--pd-hero-light);
  margin: 0;
}

.page-about__lead {
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.7;
  max-width: 520px;
  margin-bottom: var(--spacing-md);
}

.page-about__lead strong {
  color: var(--pd-hero-accent);
}

.page-about__desc {
  font-family: var(--font-body);
  font-size: var(--fs-small);
  line-height: 1.6;
  max-width: 480px;
  opacity: 0.85;
  margin-bottom: var(--spacing-lg);
}

.page-about__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.page-about__hero-visual {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 200px;
}

.page-about__abstract-img {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: var(--pd-radius);
  box-shadow: 0 0 30px rgba(212,175,55,0.15);
}

/* 服务边界 */
.page-about__service {
  margin-bottom: var(--spacing-2xl);
}

.page-about__service-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
  margin: var(--spacing-lg) 0;
}

.page-about__service-card {
  background-color: var(--pd-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--pd-radius);
  padding: var(--spacing-lg);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.page-about__service-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(212,175,55,0.2);
}

.page-about__service-icon {
  margin-bottom: var(--spacing-sm);
  display: inline-block;
}

.page-about__service-title {
  font-family: var(--font-heading);
  font-weight: var(--fw-bold);
  font-size: var(--fs-h4);
  color: var(--pd-hero-accent);
  margin: 0 0 var(--spacing-xs);
}

.page-about__service-text {
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.5;
  margin-bottom: var(--spacing-sm);
  opacity: 0.9;
}

.page-about__service-link {
  display: inline-block;
  font-family: var(--font-body);
  font-weight: var(--fw-bold);
  font-size: var(--fs-small);
  color: var(--pd-hero-accent);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: border-color var(--transition-fast);
}

.page-about__service-link:hover {
  border-bottom-color: var(--pd-hero-accent);
}

.page-about__boundary-note {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  align-items: flex-start;
}

.page-about__boundary-img {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: var(--pd-radius);
}

.page-about__boundary-text {
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.6;
  max-width: 600px;
}

.page-about__boundary-text strong {
  color: var(--pd-hero-accent);
}

/* 信任声明 */
.page-about__trust {
  text-align: center;
  margin: var(--spacing-2xl) 0;
}

.page-about__quote {
  border-left: 4px solid var(--pd-hero-accent);
  padding-left: var(--spacing-lg);
  max-width: 600px;
  margin: 0 auto;
}

.page-about__quote p {
  font-family: var(--font-heading);
  font-weight: var(--fw-bold);
  font-size: var(--fs-h4);
  font-style: italic;
  color: var(--pd-hero-light);
  line-height: 1.5;
}

/* 联系引导 */
.page-about__contact-prompt {
  text-align: center;
  font-family: var(--font-body);
  font-size: var(--fs-body);
  margin-top: var(--spacing-xl);
}

.page-about__contact-prompt a {
  color: var(--pd-hero-accent);
  text-decoration: underline;
}

/* 滚动浮现效果 (data-reveal) */
[data-reveal] {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-reveal].revealed {
  opacity: 1;
  transform: translateY(0);
}

/* 桌面端 ≥768px */
@media (min-width: 768px) {
  .page-about__hero {
    flex-direction: row;
    align-items: center;
  }
  .page-about__hero-text {
    max-width: 55%;
  }
  .page-about__hero-visual {
    justify-content: flex-end;
  }
  .page-about__abstract-img {
    width: 400px;
    height: 400px;
    object-fit: cover;
  }
  .page-about__service-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .page-about__service-card {
    min-height: 220px;
  }
  .page-about__boundary-note {
    flex-direction: row;
    align-items: center;
    gap: var(--spacing-xl);
  }
  .page-about__boundary-img {
    width: 600px;
    height: 200px;
    object-fit: cover;
    flex-shrink: 0;
  }
}

/* 桌面大屏 ≥1200px 增加留白 */
@media (min-width: 1200px) {
  .page-about__wrapper {
    padding-left: var(--spacing-2xl);
    padding-right: var(--spacing-2xl);
  }
  .page-about__hero-text {
    max-width: 50%;
  }
}

/* 移动端微调 */
@media (max-width: 767px) {
  .section-marker {
    flex-wrap: wrap;
  }
  .section-marker__title {
    font-size: var(--fs-h3);
  }
  .page-about__heading {
    font-size: var(--fs-h2);
  }
  .page-about__abstract-img {
    max-width: 300px;
  }
  .page-about__service-card {
    padding: var(--spacing-md);
  }
  .page-about__quote {
    padding-left: var(--spacing-md);
  }
}