/* 关于我们系列页面 */
.page-about main {
  padding-top: 0;
}

.ab-hero {
  padding: 140px 24px 48px;
  text-align: center;
  color: #fff;
  background: linear-gradient(135deg, #1a3a8f, #2b5fd9);
}

.ab-hero h1 {
  margin: 0;
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 600;
}

.ab-hero p {
  margin: 12px 0 0;
  font-size: 16px;
  opacity: 0.9;
}

.ab-layout {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 24px 80px;
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 40px;
  align-items: start;
}

.ab-sidebar {
  position: sticky;
  top: 100px;
  padding: 24px 0;
  border-right: 1px solid var(--border, #e8ecf0);
}

.ab-sidebar-title {
  margin: 0 0 16px;
  padding: 0 16px;
  font-size: 18px;
  font-weight: 600;
  color: var(--text-dark, #111f33);
}

.ab-sidebar-nav {
  list-style: none;
  margin: 0;
  padding: 0;
}

.ab-sidebar-nav a {
  display: block;
  padding: 12px 16px;
  font-size: 15px;
  color: var(--text-gray, #676c73);
  text-decoration: none;
  border-left: 3px solid transparent;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}

.ab-sidebar-nav a:hover,
.ab-sidebar-nav a.active {
  color: var(--primary, #236def);
  background: rgba(35, 109, 239, 0.06);
  border-left-color: var(--primary, #236def);
}

.ab-breadcrumb {
  margin: 0 0 24px;
  font-size: 14px;
  color: var(--text-gray, #676c73);
}

.ab-breadcrumb a {
  color: var(--text-gray, #676c73);
  text-decoration: none;
}

.ab-breadcrumb a:hover {
  color: var(--primary, #236def);
}

.ab-content h2 {
  margin: 0 0 8px;
  font-size: 28px;
  font-weight: 600;
  color: var(--text-dark, #111f33);
}

.ab-content h3 {
  margin: 32px 0 16px;
  font-size: 22px;
  font-weight: 600;
  color: var(--text-dark, #111f33);
}

.ab-subtitle {
  margin: 0 0 24px;
  font-size: 18px;
  color: var(--primary, #236def);
  font-weight: 500;
}

.ab-intro-text {
  font-size: 15px;
  line-height: 1.9;
  color: var(--text-gray, #555);
}

.ab-intro-text p {
  margin: 0 0 16px;
}

.ab-stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin: 32px 0;
}

.ab-stat-box {
  text-align: center;
  padding: 28px 16px;
  border-radius: var(--radius, 8px);
  background: var(--gray-bg, #f8f9fb);
}

.ab-stat-num {
  font-size: 36px;
  font-weight: 700;
  color: var(--primary, #236def);
  line-height: 1.2;
}

.ab-stat-num small {
  font-size: 16px;
  font-weight: 500;
}

.ab-stat-label {
  margin-top: 8px;
  font-size: 14px;
  color: var(--text-gray, #676c73);
}

.ab-mv-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin: 24px 0 40px;
}

.ab-mv-card {
  padding: 32px;
  border-radius: var(--radius, 8px);
  background: var(--gray-bg, #f8f9fb);
}

.ab-mv-card img {
  width: 48px;
  height: 48px;
  margin-bottom: 16px;
}

.ab-mv-card h4 {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 600;
}

.ab-mv-card p {
  margin: 0;
  font-size: 14px;
  color: var(--text-gray, #676c73);
  line-height: 1.7;
}

.ab-awards-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  margin: 24px 0 40px;
}

.ab-awards-grid img {
  width: 100%;
  border-radius: 6px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
}

.ab-timeline {
  margin-top: 24px;
}

.ab-timeline-item {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 24px;
  padding: 24px 0;
  border-bottom: 1px solid var(--border, #e8ecf0);
}

.ab-timeline-item:last-child {
  border-bottom: none;
}

.ab-timeline-year {
  font-size: 20px;
  font-weight: 700;
  color: var(--primary, #236def);
}

.ab-timeline-body h4 {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 600;
}

.ab-timeline-body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-gray, #676c73);
}

.ab-cert-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 24px;
}

.ab-cert-grid img {
  width: 100%;
  border: 1px solid var(--border, #e8ecf0);
  border-radius: 6px;
  cursor: pointer;
  transition: box-shadow 0.2s;
}

.ab-cert-grid img:hover {
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

.ab-cert-grid figcaption {
  margin-top: 8px;
  font-size: 13px;
  text-align: center;
  color: var(--text-gray, #676c73);
}

.ab-pay-notice {
  padding: 20px 24px;
  margin-bottom: 32px;
  border-left: 4px solid #fe7c70;
  background: #fff8f7;
  font-size: 14px;
  line-height: 1.8;
  color: #555;
}

.ab-pay-qr {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
  max-width: 480px;
  margin: 24px 0 40px;
}

.ab-pay-qr figure {
  margin: 0;
  text-align: center;
}

.ab-pay-qr img {
  width: 160px;
  height: 160px;
  object-fit: contain;
  border: 1px solid var(--border, #e8ecf0);
  border-radius: 8px;
}

.ab-pay-qr figcaption {
  margin-top: 8px;
  font-size: 14px;
  color: var(--text-gray, #676c73);
}

.ab-pay-tip {
  margin: 16px 0 32px;
  font-size: 13px;
  color: #fe7c70;
}

.ab-info-box {
  padding: 24px;
  margin: 16px 0 32px;
  border-radius: var(--radius, 8px);
  background: var(--gray-bg, #f8f9fb);
  font-size: 14px;
  line-height: 2;
  color: #444;
}

.ab-info-box p {
  margin: 0;
}

.ab-copy-btn {
  margin-top: 12px;
  padding: 8px 20px;
  border: 1px solid var(--primary, #236def);
  border-radius: 20px;
  background: #fff;
  color: var(--primary, #236def);
  font-size: 13px;
  cursor: pointer;
}

.ab-copy-btn:hover {
  background: rgba(35, 109, 239, 0.06);
}

.ab-brand-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin: 32px 0;
}

.ab-brand-card {
  padding: 28px;
  border-radius: var(--radius, 8px);
  background: var(--gray-bg, #f8f9fb);
}

.ab-brand-card h4 {
  margin: 0 0 12px;
  font-size: 18px;
  font-weight: 600;
  color: var(--primary, #236def);
}

.ab-brand-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-gray, #676c73);
}

.ab-cta {
  margin-top: 48px;
  padding: 48px 40px;
  text-align: center;
  border-radius: var(--radius-md, 12px);
  background: linear-gradient(135deg, #fff5f6 0%, #fff 52%, #f8f9fb 100%);
  border: 1px solid rgba(196, 18, 48, 0.08);
  box-shadow: 0 12px 40px rgba(196, 18, 48, 0.08);
}

.ab-cta h3 {
  margin: 0 0 10px;
  font-size: 22px;
  font-weight: 700;
  color: var(--text-dark, #111f33);
}

.ab-cta p {
  margin: 0 auto 28px;
  max-width: 520px;
  color: var(--text-gray, #676c73);
  line-height: 1.75;
}

.ab-cta-actions {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.ab-cta .btn {
  min-width: 148px;
  font-weight: 600;
  border-radius: 8px;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.ab-cta .btn-primary {
  box-shadow: 0 4px 16px rgba(196, 18, 48, 0.2);
}

.ab-cta .btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(196, 18, 48, 0.28);
}

.ab-cta .btn-outline {
  border-width: 2px;
  background: #fff;
}

.ab-cta .btn-outline:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(196, 18, 48, 0.12);
}

@media (max-width: 900px) {
  .ab-layout {
    grid-template-columns: 1fr;
  }

  .ab-sidebar {
    position: static;
    border-right: none;
    border-bottom: 1px solid var(--border, #e8ecf0);
    padding-bottom: 16px;
  }

  .ab-sidebar-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
  }

  .ab-sidebar-nav a {
    border: 1px solid var(--border, #e8ecf0);
    border-radius: 20px;
    padding: 8px 14px;
    border-left: 1px solid var(--border, #e8ecf0);
  }

  .ab-stats-row,
  .ab-mv-grid,
  .ab-brand-grid {
    grid-template-columns: 1fr;
  }

  .ab-awards-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .ab-cert-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .ab-cta {
    padding: 32px 24px;
  }

  .ab-cta-actions {
    flex-direction: column;
    width: 100%;
  }

  .ab-cta .btn {
    width: 100%;
    max-width: 280px;
  }
}

@media (max-width: 480px) {
  .ab-awards-grid,
  .ab-cert-grid,
  .ab-pay-qr {
    grid-template-columns: 1fr;
  }
}