/* 方案页面现代化样式 */
:root {
  --primary-color: #007bff;
  --secondary-color: #6c757d;
  --success-color: #28a745;
  --danger-color: #dc3545;
  --warning-color: #ffc107;
  --info-color: #17a2b8;
  --light-color: #f8f9fa;
  --dark-color: #343a40;
  --white-color: #ffffff;
  --black-color: #000000;
  
  --font-primary: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-size-base: 1rem;
  --font-size-lg: 1.25rem;
  --font-size-sm: 0.875rem;
  
  --border-radius: 0.375rem;
  --box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
  --transition: all 0.3s ease-in-out;
}

/* 基础样式重置 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: #333;
  background-color: #f8f9fa;
}

/* 面包屑导航 */
.breadcrumb {
  padding: 1rem 0;
  background-color: var(--light-color);
  border-bottom: 1px solid #dee2e6;
}

.breadcrumb-item {
  display: inline-block;
  color: var(--secondary-color);
}

.breadcrumb-item:not(:last-child)::after {
  content: " > ";
  margin: 0 0.5rem;
}

.breadcrumb-item a {
  color: var(--primary-color);
  text-decoration: none;
}

.breadcrumb-item a:hover {
  text-decoration: underline;
}

/* 方案页面容器 */
.solutions-container {
  padding: 2rem 1rem;
  max-width: 1200px;
  margin: 0 auto;
}

/* 页面标题 */
.page-title {
  text-align: center;
  margin-bottom: 3rem;
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--dark-color);
}

.page-subtitle {
  text-align: center;
  margin-bottom: 3rem;
  font-size: 1.25rem;
  color: var(--secondary-color);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

/* 方案分类导航 */
.categories-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 3rem;
  background: var(--white-color);
  border-radius: var(--border-radius);
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
  padding: 1rem;
}

.category-item {
  margin: 0.5rem 1rem;
}

.category-link {
  display: block;
  padding: 0.75rem 1.5rem;
  color: var(--dark-color);
  text-decoration: none;
  border-radius: var(--border-radius);
  transition: var(--transition);
  font-weight: 500;
}

.category-link:hover,
.category-link.active {
  background-color: var(--primary-color);
  color: var(--white-color);
}

/* 方案网格 */
.solutions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 2rem;
}

.solution-card {
  background: var(--white-color);
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
  transition: var(--transition);
}

.solution-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 25px rgba(0,0,0,0.15);
}

.solution-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-bottom: 1px solid #eee;
}

.solution-content {
  padding: 1.5rem;
}

.solution-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--dark-color);
}

.solution-excerpt {
  color: var(--secondary-color);
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

.solution-meta {
  display: flex;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  font-size: var(--font-size-sm);
  color: #6c757d;
}

.btn-read-more {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  background-color: var(--primary-color);
  color: var(--white-color);
  text-decoration: none;
  border-radius: var(--border-radius);
  transition: var(--transition);
  font-weight: 500;
}

.btn-read-more:hover {
  background-color: #0069d9;
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

/* 单个方案详情 */
.solution-detail {
  background: var(--white-color);
  border-radius: var(--border-radius);
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
  padding: 2rem;
  margin-bottom: 2rem;
}

.solution-detail-image {
  width: 100%;
  height: 400px;
  object-fit: cover;
  border-radius: var(--border-radius);
  margin-bottom: 2rem;
}

.solution-detail-title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--dark-color);
}

.solution-detail-meta {
  display: flex;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid #eee;
  color: var(--secondary-color);
}

.solution-detail-content {
  line-height: 1.8;
  font-size: 1.1rem;
}

.solution-detail-content h2 {
  font-size: 1.75rem;
  margin: 2rem 0 1rem;
  color: var(--dark-color);
}

.solution-detail-content h3 {
  font-size: 1.5rem;
  margin: 1.5rem 0 1rem;
  color: var(--dark-color);
}

.solution-detail-content p {
  margin-bottom: 1.5rem;
}

.solution-detail-content ul,
.solution-detail-content ol {
  margin-bottom: 1.5rem;
  padding-left: 2rem;
}

.solution-detail-content li {
  margin-bottom: 0.5rem;
}

/* 响应式设计 */
@media (max-width: 992px) {
  .solutions-grid {
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  }
  
  .solution-detail-image {
    height: 300px;
  }
}

@media (max-width: 768px) {
  .page-title {
    font-size: 2rem;
  }
  
  .solutions-grid {
    grid-template-columns: repeat(auto-fill, minmax(100%, 1fr));
  }
  
  .categories-nav {
    flex-direction: column;
    align-items: center;
  }
  
  .category-item {
    margin: 0.25rem 0;
  }
  
  .solution-detail-image {
    height: 250px;
  }
}

@media (max-width: 576px) {
  .solutions-container {
    padding: 1rem;
  }
  
  .page-title {
    font-size: 1.75rem;
  }
  
  .solution-content {
    padding: 1rem;
  }
  
  .solution-detail {
    padding: 1rem;
  }
  
  .solution-detail-image {
    height: 200px;
  }
}