/* 资质证书板块样式 */
.certificates-section {
  padding: 120px 0;
  background: linear-gradient(180deg, white 0%, #f5f7fa 100%);
  position: relative;
  overflow: hidden;
}

.certificates-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 20% 50%, rgba(21, 101, 192, 0.03) 0%, transparent 50%),
              radial-gradient(circle at 80% 50%, rgba(66, 165, 245, 0.03) 0%, transparent 50%);
  pointer-events: none;
}

.certificates-slider {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  margin-top: 80px;
  position: relative;
  z-index: 1;
}

.certificate-card {
  background: white;
  border-radius: 20px;
  padding: 50px 30px;
  text-align: center;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
  border: 1px solid #e3f2fd;
  transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.certificate-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, #1565c0 0%, #42a5f5 50%, #64b5f6 100%);
  transform: scaleX(0);
  transition: transform 0.5s ease;
}

.certificate-card:hover {
  transform: translateY(-10px) scale(1.02);
  box-shadow: 0 20px 60px rgba(21, 101, 192, 0.15);
  border-color: #42a5f5;
}

.certificate-card:hover::before {
  transform: scaleX(1);
}

.certificate-icon {
  width: 90px;
  height: 90px;
  margin: 0 auto 30px;
  background: linear-gradient(135deg, #e3f2fd 0%, #bbdefb 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.4s ease;
  position: relative;
}

.certificate-icon::before {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  background: linear-gradient(135deg, #1565c0 0%, #42a5f5 100%);
  opacity: 0;
  z-index: -1;
  transition: opacity 0.4s ease;
}

.certificate-card:hover .certificate-icon {
  background: white;
  transform: scale(1.1);
}

.certificate-card:hover .certificate-icon::before {
  opacity: 1;
}

.certificate-icon svg {
  width: 45px;
  height: 45px;
  stroke: #1565c0;
  transition: stroke 0.4s ease;
}

.certificate-card:hover .certificate-icon svg {
  stroke: white;
}

.certificate-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: #1565c0;
  margin-bottom: 15px;
  line-height: 1.4;
  min-height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.certificate-card p {
  font-size: 14px;
  line-height: 1.6;
  color: #757575;
  margin: 0;
  min-height: 50px;
}

.certificate-badge {
  display: inline-block;
  margin-top: 25px;
  padding: 8px 20px;
  background: linear-gradient(135deg, #1565c0 0%, #42a5f5 100%);
  color: white;
  font-size: 13px;
  font-weight: 700;
  border-radius: 20px;
  letter-spacing: 0.5px;
  box-shadow: 0 4px 15px rgba(21, 101, 192, 0.3);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.certificate-card:hover .certificate-badge {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(21, 101, 192, 0.4);
}

/* 动画效果 */
.animate-fade-up {
  opacity: 0;
  transform: translateY(40px);
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.animate-fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* 响应式 */
@media (max-width: 1200px) {
  .certificates-slider {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 768px) {
  .certificates-section {
    padding: 80px 0;
  }

  .certificates-slider {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .certificate-card {
    padding: 35px 20px;
  }

  .certificate-icon {
    width: 70px;
    height: 70px;
    margin-bottom: 20px;
  }

  .certificate-icon svg {
    width: 35px;
    height: 35px;
  }

  .certificate-card h3 {
    font-size: 16px;
    min-height: 45px;
  }

  .certificate-card p {
    font-size: 13px;
    min-height: 42px;
  }
}

@media (max-width: 480px) {
  .certificates-slider {
    grid-template-columns: 1fr;
  }
}