/* ============================================
   Contact CSS - 联系页样式
   ============================================ */

/* 联系信息 */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2xl);
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xl);
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
  background-color: #ffffff;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  transition: all var(--transition-base);
}

.contact-item:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

.contact-item-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(212, 35, 42, 0.1), rgba(26, 58, 107, 0.1));
  border-radius: var(--radius-md);
  flex-shrink: 0;
}

.contact-item-icon svg {
  width: 24px;
  height: 24px;
  fill: var(--color-secondary);
}

.contact-item-text h3 {
  font-size: 1rem;
  color: var(--color-text);
  margin-bottom: 0.25rem;
}

.contact-item-text p {
  font-size: 0.9375rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

.contact-item-text a {
  color: var(--color-primary);
  transition: color var(--transition-base);
}

.contact-item-text a:hover {
  color: var(--color-primary-dark);
}

/* 地图 */
.contact-map {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.contact-map iframe {
  width: 100%;
  height: 400px;
  border: none;
}

/* 二维码区 */
.contact-qr-section {
  margin-top: var(--spacing-2xl);
}

.qr-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
  margin: 0 auto;
}

.qr-card {
  text-align: center;
  padding: var(--spacing-lg);
  background-color: #ffffff;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.qr-card-img {
  width: 160px;
  height: 160px;
  background-color: var(--color-bg-light);
  border-radius: var(--radius-sm);
  margin: 0 auto var(--spacing-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-lighter);
  font-size: 0.75rem;
}

.qr-card h4 {
  font-size: 0.9375rem;
  color: var(--color-text);
  margin-bottom: 0.25rem;
}

.qr-card p {
  font-size: 0.8125rem;
  color: var(--color-text-lighter);
}

/* 资质证书页 */
.cert-tabs {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: var(--spacing-2xl);
}

.cert-tab {
  padding: 0.625rem 1.5rem;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text-light);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-base);
  border: 1px solid var(--color-border);
}

.cert-tab:hover {
  color: var(--color-text);
  border-color: var(--color-primary);
}

.cert-tab.active {
  background-color: var(--color-primary);
  color: #ffffff;
  border-color: var(--color-primary);
}

.cert-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-lg);
  max-width: 800px;
  margin: 0 auto;
}

.cert-card {
  background-color: #ffffff;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  transition: all var(--transition-base);
  cursor: pointer;
}

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

.cert-card-img {
  aspect-ratio: 4/3;
  background-color: var(--color-bg-light);
  overflow: hidden;
}

.cert-card-img img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 1rem;
}

.cert-card-info {
  padding: 1rem 1.25rem;
}

.cert-card-info h3 {
  font-size: 0.9375rem;
  color: var(--color-text);
}

.cert-card-info p {
  font-size: 0.8125rem;
  color: var(--color-text-lighter);
  margin-top: 0.25rem;
}

/* 专利卡片网格 */
.patent-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

.patent-card {
  background-color: #ffffff;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  transition: all var(--transition-base);
}

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

.patent-card-img {
  aspect-ratio: 3/4;
  background-color: var(--color-bg-light);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.patent-card-img picture,
.patent-card-img img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.patent-card-info {
  padding: 1rem 1.25rem;
  text-align: center;
}

.patent-card-info .patent-number {
  display: block;
  font-size: 0.75rem;
  color: var(--color-primary);
  margin-bottom: 0.375rem;
}

.patent-card-info h4 {
  font-size: 0.9375rem;
  color: var(--color-text);
  line-height: 1.4;
}

/* 专利时间轴 */
.patent-timeline {
  position: relative;
  padding: var(--spacing-xl) 0;
}

.patent-timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background-color: var(--color-border);
  transform: translateX(-50%);
}

.patent-item {
  display: flex;
  align-items: flex-start;
  margin-bottom: var(--spacing-xl);
  position: relative;
}

.patent-item:nth-child(odd) {
  flex-direction: row;
  padding-right: calc(50% + 2rem);
  text-align: right;
}

.patent-item:nth-child(even) {
  flex-direction: row-reverse;
  padding-left: calc(50% + 2rem);
  text-align: left;
}

.patent-item::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0.5rem;
  width: 16px;
  height: 16px;
  background-color: var(--color-primary);
  border: 3px solid #ffffff;
  border-radius: 50%;
  transform: translateX(-50%);
  box-shadow: var(--shadow-sm);
  z-index: 1;
}

.patent-content {
  background-color: #ffffff;
  padding: var(--spacing-lg);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
}

.patent-content .year {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 0.375rem;
}

.patent-content h4 {
  font-size: 1rem;
  color: var(--color-text);
  margin-bottom: 0.375rem;
}

.patent-content p {
  font-size: 0.875rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

/* 协会Logo墙 */
.assoc-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

.assoc-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--spacing-lg);
  background-color: #ffffff;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  transition: all var(--transition-base);
}

.assoc-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-secondary);
}

.assoc-card-img {
  width: 120px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-sm);
  background-color: var(--color-bg-light);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.assoc-card-img img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

.assoc-card h4 {
  font-size: 0.8125rem;
  color: var(--color-text-light);
  text-align: center;
}

/* 案例展示 */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-lg);
}

.case-card {
  background-color: #ffffff;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  transition: all var(--transition-base);
}

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

.case-card-img {
  aspect-ratio: 16/10;
  background-color: var(--color-bg-light);
  overflow: hidden;
}

.case-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.case-card-body {
  padding: var(--spacing-lg);
}

.case-card-body .case-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-primary);
  background-color: rgba(212, 35, 42, 0.08);
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  margin-bottom: 0.75rem;
}

.case-card-body h3 {
  font-size: 1.125rem;
  color: var(--color-text);
  margin-bottom: 0.5rem;
}

.case-card-body p {
  font-size: 0.9375rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* 关于我们 - 时间轴 */
.about-timeline {
  position: relative;
  padding: var(--spacing-xl) 0;
}

.about-timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background-color: var(--color-border);
}

.timeline-item {
  display: flex;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
  position: relative;
  padding-left: 2rem;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -5px;
  top: 0.5rem;
  width: 12px;
  height: 12px;
  background-color: var(--color-primary);
  border: 2px solid #ffffff;
  border-radius: 50%;
}

.timeline-year {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary);
  flex-shrink: 0;
  width: 80px;
}

.timeline-content h4 {
  font-size: 1rem;
  color: var(--color-text);
  margin-bottom: 0.25rem;
}

.timeline-content p {
  font-size: 0.9375rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* 关于我们 - 数据 */
.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

.about-stat-card {
  text-align: center;
  padding: var(--spacing-xl);
  background-color: #ffffff;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  transition: all var(--transition-base);
}

.about-stat-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

.about-stat-card .stat-value {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-secondary);
  line-height: 1;
  margin-bottom: 0.375rem;
}

.about-stat-card .stat-value .unit {
  font-size: 1rem;
  color: var(--color-primary);
}

.about-stat-card .stat-label {
  font-size: 0.9375rem;
  color: var(--color-text-light);
}

/* 关于我们 - 视频 */
.about-video {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  background-color: #000;
}

.about-video video {
  width: 100%;
  display: block;
}

/* 响应式 */
@media (max-width: 1023px) {
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .cert-grid {
    grid-template-columns: repeat(2, 1fr);
    max-width: 100%;
  }

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

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

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

  .patent-timeline::before {
    left: 0;
  }

  .patent-item:nth-child(odd),
  .patent-item:nth-child(even) {
    flex-direction: row;
    padding-right: 0;
    padding-left: 3rem;
    text-align: left;
  }

  .patent-item::before {
    left: 0;
  }

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

@media (max-width: 767px) {
  .cert-grid {
    grid-template-columns: 1fr;
  }

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

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

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

  .about-stats {
    grid-template-columns: 1fr;
  }
}