/* 全局样式 */
:root {
  --primary-color: #0056b3;
  --secondary-color: #6c757d;
  --success-color: #28a745;
  --info-color: #17a2b8;
  --warning-color: #ffc107;
  --danger-color: #dc3545;
  --light-color: #f8f9fa;
  --dark-color: #343a40;
}

body {
  font-family: "Microsoft YaHei", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: #333;
  line-height: 1.6;
}

/* 导航栏样式增强 */
.navbar {
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.navbar-brand img {
  transition: transform 0.3s ease;
}

.navbar-brand:hover img {
  transform: scale(1.05);
}

.nav-link {
  font-weight: 500;
  padding: 0.5rem 1rem;
  transition: color 0.3s ease;
}

.nav-link.active {
  color: var(--primary-color) !important;
  font-weight: 600;
}

.dropdown-menu {
  border: none;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  border-radius: 0.5rem;
}

.dropdown-item {
  padding: 0.5rem 1.5rem;
  transition: background-color 0.3s ease, color 0.3s ease;
}

.dropdown-item:hover {
  background-color: rgba(0, 86, 179, 0.1);
  color: var(--primary-color);
}

/* 按钮样式增强 */
.btn {
  border-radius: 0.375rem;
  padding: 0.5rem 1.25rem;
  font-weight: 500;
  transition: all 0.3s ease;
}

.btn-primary {
  background-color: var(--primary-color);
  border-color: var(--primary-color);
}

.btn-primary:hover {
  background-color: #004494;
  border-color: #004494;
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.btn-outline-primary {
  color: var(--primary-color);
  border-color: var(--primary-color);
}

.btn-outline-primary:hover {
  background-color: var(--primary-color);
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

/* 卡片样式增强 */
.card {
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border-radius: 0.5rem;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1) !important;
}

.card-body {
  padding: 1.5rem;
}

/* 页面横幅样式 */
.bg-light {
  background-color: #f8f9fa !important;
}

/* 特性部分样式 */
.feature-icon {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background-color: rgba(0, 86, 179, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
}

.feature-icon i {
  font-size: 2rem;
  color: var(--primary-color);
}

/* 产品卡片样式 */
.product-card {
  border: none;
  border-radius: 0.5rem;
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.product-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1) !important;
}

.product-card .card-img-top {
  height: 200px;
  object-fit: cover;
}

.product-card .badge {
  position: absolute;
  top: 1rem;
  right: 1rem;
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

/* 解决方案部分样式 */
.solution-item {
  padding: 2rem;
  border-radius: 0.5rem;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.solution-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.solution-icon {
  font-size: 2.5rem;
  margin-bottom: 1.5rem;
  color: var(--primary-color);
}

/* 客户案例部分样式 */
.testimonial-card {
  padding: 2rem;
  border-radius: 0.5rem;
  transition: transform 0.3s ease;
}

.testimonial-card:hover {
  transform: translateY(-5px);
}

.testimonial-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: 1rem;
}

/* 页脚样式 */
footer {
  background-color: var(--dark-color);
  color: white;
}

footer a {
  color: rgba(255, 255, 255, 0.8);
  transition: color 0.3s ease;
}

footer a:hover {
  color: white;
  text-decoration: none;
}

/* 返回顶部按钮 */
#backToTop {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
}

#backToTop:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

/* 白皮书页面特定样式 */
#toc .nav-link {
  padding: 0.5rem 0;
  color: #495057;
  transition: all 0.3s ease;
}

#toc .nav-link:hover {
  color: var(--primary-color);
  transform: translateX(5px);
}

#toc .nav-link.active {
  color: var(--primary-color);
  font-weight: bold;
}

/* 常见问题页面特定样式 */
.accordion-button:not(.collapsed) {
  background-color: rgba(0, 86, 179, 0.05);
  color: var(--primary-color);
  font-weight: 600;
}

.accordion-button:focus {
  box-shadow: none;
  border-color: rgba(0, 86, 179, 0.25);
}

/* 响应式调整 */
@media (max-width: 768px) {
  .display-4 {
    font-size: 2.5rem;
  }
  
  .display-5 {
    font-size: 2rem;
  }
  
  .feature-icon {
    width: 60px;
    height: 60px;
  }
  
  .feature-icon i {
    font-size: 1.5rem;
  }
}