/* ========================================
   内页通用样式
   ======================================== */

/* 公司简介 */
.about-content h2 {
  font-size: var(--font-size-2xl);
  color: var(--primary);
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--bg-tertiary);
}

.about-content p {
  font-size: var(--font-size-base);
  color: var(--text-secondary);
  line-height: 2;
  margin-bottom: 16px;
  text-indent: 2em;
}

.about-highlights {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin: 30px 0;
}

.about-highlight-item {
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  padding: 24px;
  text-align: center;
  border-left: 4px solid var(--accent);
}

.about-highlight-item h4 {
  font-size: var(--font-size-2xl);
  color: var(--accent);
  margin-bottom: 8px;
}

.about-highlight-item p {
  text-indent: 0;
  font-size: var(--font-size-sm);
  margin-bottom: 0;
}

/* 发展历程时间轴 */
.timeline {
  position: relative;
  padding: 20px 0;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 3px;
  height: 100%;
  background: var(--bg-tertiary);
}

.timeline-item {
  display: flex;
  justify-content: flex-end;
  padding-right: calc(50% + 30px);
  margin-bottom: 40px;
  position: relative;
}

.timeline-item:nth-child(even) {
  justify-content: flex-start;
  padding-right: 0;
  padding-left: calc(50% + 30px);
}

.timeline-dot {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--primary);
  border: 3px solid var(--bg-primary);
  box-shadow: 0 0 0 3px var(--primary);
  z-index: 1;
}

.timeline-content {
  background: var(--bg-primary);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  box-shadow: var(--shadow-card);
  max-width: 100%;
}

.timeline-year {
  display: inline-block;
  background: var(--primary);
  color: #fff;
  padding: 4px 16px;
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: 600;
  margin-bottom: 12px;
}

.timeline-content h4 {
  font-size: var(--font-size-lg);
  color: var(--primary);
  margin-bottom: 8px;
}

.timeline-content p {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  line-height: 1.7;
  text-indent: 0;
  margin-bottom: 0;
}

/* 资质证书 */
.certificate-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.certificate-card {
  background: var(--bg-primary);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: all var(--transition-base);
  cursor: pointer;
}

.certificate-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-4px);
}

.certificate-image {
  height: 200px;
  background: var(--bg-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-light);
  font-size: var(--font-size-sm);
  border-bottom: 1px solid var(--border-light);
}

.certificate-card h4 {
  padding: 12px 16px;
  font-size: var(--font-size-sm);
  color: var(--text-primary);
  text-align: center;
}

/* 新闻列表 */
.news-list-item {
  display: flex;
  gap: 20px;
  padding: 24px 0;
  border-bottom: 1px solid var(--border-light);
  transition: all var(--transition-fast);
}

.news-list-item:last-child {
  border-bottom: none;
}

.news-list-item:hover {
  background: var(--bg-secondary);
  padding-left: 16px;
  padding-right: 16px;
  border-radius: var(--radius-md);
  margin-left: -16px;
  margin-right: -16px;
}

.news-list-date {
  flex-shrink: 0;
  width: 80px;
  text-align: center;
  padding-top: 4px;
}

.news-list-day {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--primary);
  line-height: 1;
}

.news-list-month {
  font-size: var(--font-size-xs);
  color: var(--text-light);
  margin-top: 4px;
}

.news-list-body {
  flex: 1;
  min-width: 0;
}

.news-list-body h3 {
  font-size: var(--font-size-lg);
  color: var(--text-primary);
  margin-bottom: 8px;
  transition: color var(--transition-fast);
}

.news-list-item:hover .news-list-body h3 {
  color: var(--accent);
}

.news-list-body p {
  font-size: var(--font-size-sm);
  color: var(--text-light);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-list-meta {
  display: flex;
  gap: 16px;
  margin-top: 8px;
  font-size: var(--font-size-xs);
  color: var(--text-light);
}

/* 新闻详情 */
.news-detail {
  padding: 30px 0;
}

.news-detail-header {
  margin-bottom: 30px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border-light);
}

.news-detail-title {
  font-size: var(--font-size-2xl);
  color: var(--text-primary);
  margin-bottom: 16px;
  line-height: 1.4;
}

.news-detail-meta {
  display: flex;
  gap: 24px;
  font-size: var(--font-size-sm);
  color: var(--text-light);
}

.news-detail-body {
  font-size: var(--font-size-base);
  color: var(--text-secondary);
  line-height: 2;
}

.news-detail-body p {
  margin-bottom: 16px;
  text-indent: 2em;
}

.news-detail-body h3 {
  font-size: var(--font-size-xl);
  color: var(--primary);
  margin: 30px 0 16px;
  text-indent: 0;
}

.news-detail-body img {
  margin: 20px 0;
  border-radius: var(--radius-md);
}

/* 产品网格 */
.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

/* 子分类标题 */
.product-subcategory-title {
  grid-column: 1 / -1;
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--primary);
  padding: 16px 0 8px;
  border-bottom: 2px solid var(--primary);
  margin: 8px 0 0;
  display: flex;
  align-items: center;
  gap: 8px;
  scroll-margin-top: calc(var(--header-height) + 20px); /* 锚点跳转偏移量 */
}

.product-subcategory-title::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 18px;
  background: var(--accent);
}

/* 产品型录/手册展示 - 图片填满并纵向排列 */
.product-manual {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.product-manual-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--primary);
  padding: 16px 0;
  border-bottom: 2px solid var(--primary);
  margin-bottom: 0;
}

.product-manual img {
  width: 100%;
  height: auto;
  display: block;
  margin-bottom: 0;
}
  border-radius: 2px;
}

.product-card {
  background: var(--bg-primary);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: all var(--transition-base);
  border: 1px solid var(--border-light);
}

.product-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-4px);
  border-color: var(--primary-light);
}

.product-card-image {
  height: 220px;
  background: var(--bg-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-light);
  font-size: 48px;
  position: relative;
  overflow: hidden;
}

.product-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  display: block;
  transition: transform 0.3s ease;
}

.product-card:hover .product-card-image img {
  transform: scale(1.04);
}

.product-card-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  background: var(--accent);
  color: #fff;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: 11px;
  font-weight: 500;
}

.product-card-body {
  padding: 16px;
}

.product-card-body h3 {
  font-size: var(--font-size-base);
  color: var(--text-primary);
  margin-bottom: 8px;
  line-height: 1.4;
}

.product-card-body p {
  font-size: var(--font-size-sm);
  color: var(--text-light);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.product-card-footer {
  padding: 0 16px 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.product-card-model {
  font-size: var(--font-size-xs);
  color: var(--text-light);
}

/* 产品详情 */
.product-detail-section {
  margin-bottom: 40px;
}

.product-detail-section h3 {
  font-size: var(--font-size-xl);
  color: var(--primary);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--bg-tertiary);
}

.product-detail-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px 30px;
}

.product-spec-item {
  display: flex;
  padding: 10px 0;
  border-bottom: 1px dashed var(--border-light);
  font-size: var(--font-size-sm);
}

.product-spec-item dt {
  width: 120px;
  flex-shrink: 0;
  color: var(--text-light);
  font-weight: 500;
}

.product-spec-item dd {
  flex: 1;
  color: var(--text-primary);
}

/* 解决方案详情 */
.solution-detail-intro {
  display: flex;
  gap: 40px;
  margin-bottom: 40px;
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  padding: 30px;
}

.solution-detail-image {
  flex-shrink: 0;
  width: 400px;
  height: 260px;
  border-radius: var(--radius-md);
  background: var(--primary-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 64px;
}

.solution-detail-text h3 {
  font-size: var(--font-size-2xl);
  color: var(--primary);
  margin-bottom: 12px;
}

.solution-detail-text p {
  font-size: var(--font-size-base);
  color: var(--text-secondary);
  line-height: 1.8;
}

.solution-advantages {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.solution-advantage-item {
  display: flex;
  gap: 16px;
  padding: 20px;
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
}

.solution-advantage-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--accent-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
}

.solution-advantage-item h4 {
  font-size: var(--font-size-base);
  color: var(--primary);
  margin-bottom: 6px;
}

.solution-advantage-item p {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  line-height: 1.6;
}

/* 案例列表 */
.case-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
}

.case-card {
  background: var(--bg-primary);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: all var(--transition-base);
}

.case-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-4px);
}

.case-card-image {
  height: 200px;
  background: var(--primary-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 48px;
}

.case-card-body {
  padding: 20px;
}

.case-card-body h3 {
  font-size: var(--font-size-lg);
  color: var(--text-primary);
  margin-bottom: 10px;
}

.case-card-body p {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 12px;
}

/* 联系我们 */
.contact-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.contact-info-card {
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  padding: 30px;
  margin-bottom: 20px;
}

.contact-info-card h3 {
  font-size: var(--font-size-xl);
  color: var(--primary);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 14px;
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.contact-info-item svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  color: var(--accent);
  margin-top: 2px;
}

/* 在线留言表单 */
.contact-form {
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  padding: 30px;
}

.contact-form h3 {
  font-size: var(--font-size-xl);
  color: var(--primary);
  margin-bottom: 24px;
}

.form-group {
  margin-bottom: 20px;
  position: relative;
}

.form-group label {
  display: block;
  font-size: var(--font-size-sm);
  color: var(--text-primary);
  margin-bottom: 6px;
  font-weight: 500;
}

.form-group label .required {
  color: #e53e3e;
  margin-left: 2px;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
  transition: all var(--transition-fast);
  background: var(--bg-primary);
}

.form-group textarea {
  height: 120px;
  resize: vertical;
}

.form-group.has-error input,
.form-group.has-error textarea,
.form-group.has-error select {
  border-color: #e53e3e;
}

.form-error {
  display: none;
  color: #e53e3e;
  font-size: var(--font-size-xs);
  margin-top: 4px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

/* 常见问题 */
.faq-list {
  max-width: 800px;
}

.faq-item {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
  transition: all var(--transition-fast);
}

.faq-item:hover {
  border-color: var(--primary-light);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  font-size: var(--font-size-base);
  color: var(--text-primary);
  cursor: pointer;
  font-weight: 500;
  background: var(--bg-primary);
  transition: all var(--transition-fast);
  border: none;
  width: 100%;
  text-align: left;
}

.faq-question:hover {
  background: var(--bg-secondary);
}

.faq-question svg {
  width: 18px;
  height: 18px;
  color: var(--text-light);
  transition: transform var(--transition-fast);
  flex-shrink: 0;
}

.faq-item.open .faq-question {
  background: var(--bg-secondary);
  color: var(--primary);
}

.faq-item.open .faq-question svg {
  transform: rotate(180deg);
  color: var(--primary);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-base);
}

.faq-item.open .faq-answer {
  max-height: 500px;
}

.faq-answer-inner {
  padding: 0 20px 20px;
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  line-height: 1.8;
  border-top: 1px solid var(--border-light);
  padding-top: 16px;
}

/* 资源下载 */
.download-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.download-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.download-item:hover {
  background: var(--bg-primary);
  box-shadow: var(--shadow-card);
}

.download-item-info {
  display: flex;
  align-items: center;
  gap: 14px;
}

.download-item-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--primary-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 20px;
}

.download-item-text h4 {
  font-size: var(--font-size-sm);
  color: var(--text-primary);
  margin-bottom: 4px;
}

.download-item-text p {
  font-size: var(--font-size-xs);
  color: var(--text-light);
}

/* 加入我们 */
.job-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.job-item {
  background: var(--bg-primary);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-card);
  border-left: 4px solid var(--primary);
  transition: all var(--transition-base);
}

.job-item:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateX(4px);
}

.job-item-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.job-item-header h3 {
  font-size: var(--font-size-lg);
  color: var(--primary);
}

.job-tags {
  display: flex;
  gap: 8px;
}

.job-detail-row {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  font-size: var(--font-size-sm);
  color: var(--text-light);
  margin-bottom: 12px;
}

.job-detail-row span {
  display: flex;
  align-items: center;
  gap: 6px;
}

.job-detail-row svg {
  width: 14px;
  height: 14px;
}

/* ========================================
   响应式
   ======================================== */
@media (max-width: 992px) {
  .about-highlights {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

  .solution-detail-intro {
    flex-direction: column;
  }

  .solution-detail-image {
    width: 100%;
    height: 200px;
  }

  .solution-advantages {
    grid-template-columns: 1fr;
  }

  .case-grid {
    grid-template-columns: 1fr;
  }

  .contact-section {
    grid-template-columns: 1fr;
  }

  .timeline::before {
    left: 20px;
  }

  .timeline-item,
  .timeline-item:nth-child(even) {
    padding-left: 50px;
    padding-right: 0;
    justify-content: flex-start;
  }

  .timeline-dot {
    left: 20px;
  }

  .product-detail-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .about-highlights {
    grid-template-columns: 1fr;
  }

  .news-list-item {
    flex-direction: column;
    gap: 12px;
  }

  .news-list-date {
    display: flex;
    gap: 8px;
    width: auto;
    text-align: left;
  }

  .product-grid {
    grid-template-columns: 1fr;
  }

  .certificate-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .form-row {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 576px) {
  .certificate-grid {
    grid-template-columns: 1fr;
  }
}