/* 解决方案页面样式 */

/* 页面头部 */
.page-header {
  padding-top: calc(var(--header-height) + var(--spacing-xxl));
  padding-bottom: var(--spacing-xxl);
  background: linear-gradient(to bottom, var(--dark-color), #0a3a7f);
  color: var(--text-light);
  position: relative;
  overflow: hidden;
}

.page-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 20% 20%, rgba(13, 110, 253, 0.2) 0%, transparent 50%);
  z-index: 0;
}

.page-header .container {
  position: relative;
  z-index: 1;
}

.page-header h1 {
  font-size: 2.5rem;
  color: var(--text-light);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
}

.page-header p {
  font-size: 1.125rem;
  opacity: 0.9;
  max-width: 3xl;
}

/* 解决方案概述 */
.solutions-overview {
  padding: var(--spacing-xxl) 0;
  background-color: var(--light-color);
}

.solutions-overview h2 {
  font-size: 2.25rem;
  font-weight: 700;
  margin-bottom: var(--spacing-lg);
  color: var(--text-primary);
}

.solutions-overview p {
  font-size: 1.125rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xl);
  line-height: 1.7;
}

/* 优化一行四个的布局 */
.solutions-overview .row {
  display: flex;
  flex-wrap: wrap;
  margin-left: calc(var(--spacing-md) * -0.5);
  margin-right: calc(var(--spacing-md) * -0.5);
}

.solutions-overview .row > div {
  padding-left: calc(var(--spacing-md) * 0.5);
  padding-right: calc(var(--spacing-md) * 0.5);
}

.solution-overview-item {
  text-align: center;
  padding: var(--spacing-lg);
  transition: var(--transition);
  border-radius: var(--border-radius-lg);
  background-color: white;
  box-shadow: var(--shadow);
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.solution-overview-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

/* 美化图标，使用不同的渐变背景色 */
.solution-overview-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 80px;
  height: 80px;
  border-radius: 50%;
  margin-bottom: var(--spacing-md);
  transition: var(--transition);
  box-shadow: var(--shadow);
  background: linear-gradient(135deg, #4a6fa5, #1e40af); /* 深蓝色渐变 */
  color: white;
}

/* 为每个区块设置不同的图标颜色 */
.solutions-overview .col-md-3:nth-child(1) .solution-overview-icon {
  background: linear-gradient(135deg, #4a6fa5, #1e40af); /* 深蓝色渐变 */
}

.solutions-overview .col-md-3:nth-child(2) .solution-overview-icon {
  background: linear-gradient(135deg, #557c55, #166534); /* 深绿色渐变 */
}

.solutions-overview .col-md-3:nth-child(3) .solution-overview-icon {
  background: linear-gradient(135deg, #7c5f5f, #991b1b); /* 深红色渐变 */
}

.solutions-overview .col-md-3:nth-child(4) .solution-overview-icon {
  background: linear-gradient(135deg, #7c7c5f, #92400e); /* 深橙色渐变 */
}

.solution-overview-item:hover .solution-overview-icon {
  transform: scale(1.1) rotate(5deg);
  box-shadow: var(--shadow-lg);
}

.solution-overview-icon i {
  font-size: 1.75rem;
}

.solution-overview-item h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
  transition: var(--transition);
}

.solution-overview-item:hover h3 {
  color: var(--primary-color);
}

/* 响应式调整 */
@media (max-width: 992px) {
  .solutions-overview .row > div {
    margin-bottom: var(--spacing-lg);
  }
  
  .solutions-overview .row > div:nth-last-child(-n+2) {
    margin-bottom: 0;
  }
}

@media (max-width: 768px) {
  .solutions-overview .row > div:nth-last-child(-n+2) {
    margin-bottom: var(--spacing-lg);
  }
  
  .solutions-overview .row > div:last-child {
    margin-bottom: 0;
  }
  
  .solution-overview-icon {
    width: 64px;
    height: 64px;
  }
  
  .solution-overview-icon i {
    font-size: 1.5rem;
  }
}

/* 解决方案详情 */
.solution-details {
  padding: var(--spacing-xxl) 0;
}

.solution-detail-section {
  margin-bottom: calc(var(--spacing-xxl) * 1.5);
  position: relative;
}

.solution-detail-section:last-child {
  margin-bottom: 0;
}

.solution-detail-content {
  padding: var(--spacing-lg);
}

.solution-tag {
  display: inline-block;
  font-size: 1rem;
  font-weight: 700;
  color: var(--primary-color);
  background-color: rgba(13, 110, 253, 0.1);
  padding: 0.25rem 0.75rem;
  border-radius: 50%;
  margin-bottom: var(--spacing-md);
}

.solution-detail-content h2 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
}

.solution-detail-content p {
  font-size: 1.125rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-lg);
  line-height: 1.7;
}

.solution-detail-content ul {
  margin-bottom: var(--spacing-lg);
}

.solution-detail-content li {
  font-size: 1rem;
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
  display: flex;
  align-items: flex-start;
  line-height: 1.6;
}

.solution-detail-content li i {
  font-size: 1.125rem;
  margin-right: var(--spacing-md);
  margin-top: 0.25rem;
  color: var(--primary-color);
}

.solution-detail-image {
  padding: var(--spacing-lg);
}

.solution-detail-image .bg-primary.bg-opacity-10 {
  border-radius: var(--border-radius-lg);
  min-height: 300px;
}

.solution-detail-image .bg-primary {
 background-color: #e7f0ff !important;
 padding: var(--spacing-lg);
}

/* 技术图标 */
.tech-icon {
  text-align: center;
  transition: var(--transition);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
}

.tech-icon:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-color);
}

.tech-icon i {
  font-size: 2.5rem;
  color: var(--primary-color);
  margin-bottom: var(--spacing-sm);
}

/* 数字化转型图表 */
.digital-transformation-diagram {
  max-width: 300px;
  margin: 0 auto;
}

.diagram-item {
  text-align: center;
  transition: var(--transition);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
}

.diagram-item:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
  border-color: var(--primary-color);
}

.diagram-item i {
  font-size: 1.5rem;
  color: var(--primary-color);
  margin-bottom: var(--spacing-sm);
}

.diagram-item h4 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

.diagram-arrow {
  font-size: 1.25rem;
}

/* 大数据架构 */
.big-data-architecture {
  max-width: 300px;
  margin: 0 auto;
}

.arch-layer {
  text-align: center;
  transition: var(--transition);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
}

.arch-layer:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
  border-color: var(--primary-color);
}

.arch-layer h4 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--primary-color);
  margin-bottom: var(--spacing-xs);
}

/* AI应用网格 */
.ai-application-grid {
  max-width: 300px;
  margin: 0 auto;
}

.ai-app-item {
  text-align: center;
  transition: var(--transition);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
}

.ai-app-item:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
  border-color: var(--primary-color);
}

.ai-app-item i {
  font-size: 1.5rem;
  color: var(--primary-color);
  margin-bottom: var(--spacing-sm);
}

.ai-app-item h4 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

/* 国产化适配 */
.domestic-adaptation-grid {
  max-width: 300px;
  margin: 0 auto;
}

.adaptation-layer {
  text-align: center;
  transition: var(--transition);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
}

.adaptation-layer:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
  border-color: var(--primary-color);
}

.adaptation-layer h4 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--primary-color);
  margin-bottom: var(--spacing-xs);
}

/* 安全开发流程 */
.security-development-process {
  max-width: 300px;
  margin: 0 auto;
}

.process-step {
  text-align: center;
  transition: var(--transition);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
}

.process-step:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
  border-color: var(--primary-color);
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background-color: var(--primary-color);
  color: white;
  border-radius: 50%;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.process-step h4 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

.process-arrow {
  font-size: 1.25rem;
}

/* 解决方案优势 */
.solution-advantages {
  padding: var(--spacing-xxl) 0;
  background: linear-gradient(to bottom, white, #e7f0ff);
}

.solution-advantages h2 {
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
}

.solution-advantages p {
  font-size: 1.125rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xl);
  line-height: 1.7;
}

/* 优化优势区块的上下间距 */
.solution-advantages .row.gap-6 {
  margin-left: calc(var(--spacing-lg) * -0.5);
  margin-right: calc(var(--spacing-lg) * -0.5);
  display: flex;
  flex-wrap: wrap;
}

.solution-advantages .row.gap-6 > * {
  padding-left: calc(var(--spacing-lg) * 0.5);
  padding-right: calc(var(--spacing-lg) * 0.5);
  margin-bottom: var(--spacing-lg); /* 增加垂直方向的间距 */
}

/* 移除最后一行元素的底部间距 */
.solution-advantages .row.gap-6 > *:nth-last-child(-n+3) {
  margin-bottom: 0;
}

@media (max-width: 992px) {
  .solution-advantages .row.gap-6 > *:nth-last-child(-n+3) {
    margin-bottom: var(--spacing-lg);
  }
  
  .solution-advantages .row.gap-6 > *:nth-last-child(-n+2) {
    margin-bottom: 0;
  }
}

@media (max-width: 768px) {
  .solution-advantages .row.gap-6 > *:nth-last-child(-n+2) {
    margin-bottom: var(--spacing-lg);
  }
  
  .solution-advantages .row.gap-6 > *:last-child {
    margin-bottom: 0;
  }
}

.advantage-item {
  background-color: white;
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow);
  transition: var(--transition);
  height: 100%;
  display: flex;
  flex-direction: column;
  margin-bottom: var(--spacing-lg); /* 确保每个优势卡片有足够的底部间距 */
}

.advantage-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.advantage-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  background-color: var(--primary-color);
  color: white;
  border-radius: 50%;
  margin-bottom: var(--spacing-md);
  transition: var(--transition);
}

.advantage-item:hover .advantage-icon {
  transform: scale(1.1);
}

.advantage-icon i {
  font-size: 1.5rem;
}

.advantage-item h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
}

.advantage-item p {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: 0;
  flex-grow: 1;
  line-height: 1.6;
}

/* 返回顶部按钮 */
.back-to-top {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 50px;
  height: 50px;
  background-color: var(--primary-color);
  color: white;
  border: none;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  box-shadow: var(--shadow-lg);
  z-index: 9999;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background-color: var(--primary-dark);
  transform: translateY(-3px);
}

/* 响应式设计 */
@media (max-width: 992px) {
  .page-header h1 {
    font-size: 2rem;
  }
  
  .solution-detail-section {
    margin-bottom: var(--spacing-xxl);
  }
  
  .solution-detail-content h2 {
    font-size: 1.75rem;
  }
  
  .solution-advantages h2 {
    font-size: 1.75rem;
  }
}

@media (max-width: 768px) {
  .page-header {
    padding-top: calc(var(--header-height) + var(--spacing-xl));
    padding-bottom: var(--spacing-xl);
  }
  
  .page-header h1 {
    font-size: 1.75rem;
  }
  
  .solution-overview-icon {
    width: 56px;
    height: 56px;
  }
  
  .solution-detail-section {
    margin-bottom: var(--spacing-xl);
  }
  
  .solution-detail-content {
    padding: var(--spacing-md);
  }
  
  .solution-detail-content h2 {
    font-size: 1.5rem;
  }
  
  .tech-icon i {
    font-size: 2rem;
  }
  
  .advantage-item {
    padding: var(--spacing-lg);
  }
  
  .advantage-icon {
    width: 48px;
    height: 48px;
  }
  
  .advantage-item h3 {
    font-size: 1.125rem;
  }
}

@media (max-width: 576px) {
  .page-header h1 {
    font-size: 1.5rem;
  }
  
  .solution-overview-icon {
    width: 48px;
    height: 48px;
  }
  
  .solution-overview-icon i {
    font-size: 1.25rem;
  }
  
  .solution-detail-content h2 {
    font-size: 1.375rem;
  }
  
  .tech-icon i {
    font-size: 1.75rem;
  }
  
  .advantage-icon {
    width: 40px;
    height: 40px;
  }
  
  .advantage-icon i {
    font-size: 1.25rem;
  }
  
  .back-to-top {
    width: 44px;
    height: 44px;
    font-size: 1.125rem;
  }
}

/* 增强交互效果 */
.solution-detail-section .btn {
  transition: var(--transition);
  font-weight: 500;
  padding: 0.625rem 1.5rem;
  border-radius: var(--border-radius);
}

.solution-detail-section .btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

/* 优化行间距 */
.row.gap-4 {
  margin-left: calc(var(--spacing-md) * -0.5);
  margin-right: calc(var(--spacing-md) * -0.5);
}

.row.gap-4 > * {
  padding-left: calc(var(--spacing-md) * 0.5);
  padding-right: calc(var(--spacing-md) * 0.5);
}

.row.gap-6 {
  margin-left: calc(var(--spacing-lg) * -0.5);
  margin-right: calc(var(--spacing-lg) * -0.5);
}

.row.gap-6 > * {
  padding-left: calc(var(--spacing-lg) * 0.5);
  padding-right: calc(var(--spacing-lg) * 0.5);
}

.row.gap-10 {
  margin-left: calc(var(--spacing-xl) * -0.5);
  margin-right: calc(var(--spacing-xl) * -0.5);
}

.row.gap-10 > * {
  padding-left: calc(var(--spacing-xl) * 0.5);
  padding-right: calc(var(--spacing-xl) * 0.5);
}

/* 优化滚动动画 */
[data-aos="fade-up"] {
  transition-property: opacity, transform;
}

[data-aos="fade-right"] {
  transition-property: opacity, transform;
}

[data-aos="fade-left"] {
  transition-property: opacity, transform;
}

[data-aos="zoom-in"] {
  transition-property: opacity, transform;
}