/* 页面样式 */
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: #444444;
  padding-top: 76px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* 容器宽度与首页保持一致 */
.container {
  max-width: 1200px;
}

.page-header {
  background: linear-gradient(135deg, #1e3a8a 0%, #1e40af 50%, #0c1117 100%);
  padding: 3rem 0;
  color:#fff;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 50% 50%, rgba(59, 130, 246, 0.2) 0%, transparent 70%);
}

.page-header h1 {
  position: relative;
  z-index: 1;
  font-size: 2.5rem;
  font-weight: 700;
  margin: 0;
}

.page-content {
  padding: 3rem 0;
  min-height: 60vh;
}

.page-content h2 {
  color: #3b82f6;
  font-size: 1.75rem;
  margin-top: 2rem;
  margin-bottom: 1rem;
  font-weight: 600;
}

.page-content h3 {
  color: #22d3ee;
  font-size: 1.35rem;
  margin-top: 1.5rem;
  margin-bottom: 0.75rem;
  font-weight: 600;
}

.page-content p {
  color: #333333;
  margin-bottom: 1rem;
  line-height: 1.8;
}

.page-content ul, .page-content ol {
  color: #333333;
  margin-bottom: 1.5rem;
  padding-left: 1.5rem;
}

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

.page-content a {
  color: #3b82f6;
  text-decoration: none;
  transition: color 0.3s ease;
}

.page-content a:hover {
  color: #22d3ee;
}

.navbar-glass {
  background: #ffffff;
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(59, 130, 246, 0.1);
  padding: 1.25rem 0;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.navbar-brand {
  background: linear-gradient(135deg, #3b82f6 0%, #22d3ee 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-size: 1.35rem;
  font-weight: 700;
}
.nav-item a{ 
    color: rgba(33, 37, 41, 0.8) !important;
     transition: all 0.3s ease;
     position: relative;
     font-size: 1.05rem;
     padding: 0.5rem 1rem !important;
    
}
.nav-link::after {
 content: '';
 position: absolute;
 bottom: -5px;
 left: 50%;
 width: 0;
 height: 2px;
 background: linear-gradient(90deg, #0d6efd, #3d8bfd);
 transform: translateX(-50%);
 transition: width 0.3s ease;
}

.nav-link:hover {
 color: #0d6efd !important;
}

.nav-link:hover::after {
 width: 80%;
}

a.active{
      color: #0d6efd !important;
}

.navbar-logo {
  height: 32px;
  width: auto;
  object-fit: contain;
}

.btn-info {
  background: linear-gradient(135deg, #22d3ee 0%, #06b6d4 100%);
  border: none;
  color: #fff;
  padding: 0.6rem 1.5rem;
  border-radius: 8px;
  transition: all 0.3s ease;
  font-weight: 600;
}

.btn-info:hover {
  background: linear-gradient(135deg, #06b6d4 0%, #0891b2 100%);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(34, 211, 238, 0.4);
}

footer {
  border-top: 1px solid rgba(59, 130, 246, 0.1);
  background: #0a0e13;
  padding: 2rem 0;
  margin-top: 3rem;
}

.footer-link {
  text-decoration: none;
  transition: color 0.3s ease;
  font-size: 0.95rem;
}

.footer-link:hover {
  color: #3b82f6 !important;
}

.contact-info {
  background: linear-gradient(145deg, #1a2332 0%, #15202e 100%);
  border: 1px solid rgba(59, 130, 246, 0.1);
  border-radius: 12px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

.contact-info h3 {
  margin-top: 0;
}

@media (max-width: 768px) {
  .page-header h1 {
    font-size: 1.75rem;
  }
  
  .page-content h2 {
    font-size: 1.5rem;
  }
  
  .page-content h3 {
    font-size: 1.2rem;
  }
  
  .navbar-brand {
    font-size: 1.15rem;
  }
  
  .navbar-logo {
    height: 28px;
  }
}