/* sustainability.css - 荣誉资质样式 */

#sustainability {
  background-color: var(--color-bg-alt);
}

.sustainability-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 24px;
}

.certification-item {
  background-color: transparent;
  padding: 32px 16px;
  text-align: center;
  border: 1px solid var(--color-border);
  transition: border-color var(--transition-normal), background-color var(--transition-normal);
}

.certification-item:hover {
  border-color: var(--color-accent);
  background-color: var(--color-bg);
}

/* 图片类型认证 */
.certification-icon {
  width: 100%;
  max-width: 200px;
  height: 120px;
  margin: 0 auto 20px;
  object-fit: contain;
  opacity: 0.85;
  transition: opacity var(--transition-normal);
}

.certification-item:hover .certification-icon {
  opacity: 1;
}

/* 文字徽章类型认证 */
.certification-badge {
  width: 110px;
  height: 110px;
  margin: 0 auto 20px;
  border-radius: 50%;
  border: 2px solid var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Georgia', 'Times New Roman', serif;
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: 1px;
  text-align: center;
  line-height: 1.2;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

.certification-item:hover .certification-badge {
  background-color: var(--color-accent);
  color: #fff;
}

.certification-name {
  font-family: var(--font-sans);
  font-size: 15px;
  color: var(--color-text);
  font-weight: 400;
  line-height: 1.5;
  letter-spacing: 0.5px;
}

@media (max-width: 1023px) {
  .sustainability-grid { grid-template-columns: repeat(3, 1fr); gap: 20px; }
}

@media (max-width: 767px) {
  .sustainability-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .certification-item { padding: 24px 12px; }
  .certification-badge { width: 80px; height: 80px; font-size: 13px; }
  .certification-icon { height: 80px; }
  .certification-name { font-size: 13px; }
}