/* 基础样式 */
body, html {
  margin: 0;
  padding: 0;
  height: 100%;
  font-family: Arial, Helvetica, sans-serif;
}

/* 布局容器 */
.page-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}

/* 关于部分 */
.profile-section {
  margin-bottom: 40px;
}

.section-heading {
  font-size: 27px;
  color: #333;
  margin-bottom: 20px;
}

.personal-info {
  font-size: 13px;
  line-height: 1.6;
}

.professional-credentials {
  font-size: 15px;
  line-height: 1.4;
}

/* 证书展示区 */
.certificate-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 20px;
}

.certificate-card {
  text-align: center;
}

.certificate-image {
  height: 155px;
  object-fit: cover;
  margin: 0 auto;
}

.certificate-details {
  margin-top: 10px;
}

.certificate-title {
  font-size: 16px;
  font-weight: bold;
  margin-bottom: 5px;
}

.certificate-location {
  color: #666;
  font-size: 14px;
}