/* 全局样式设置 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
  padding: 20px;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
}

h1 {
  text-align: center;
  color: white;
  margin-bottom: 30px;
  font-size: 2.5rem;
  text-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

/* 链接网格布局 */
.links-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 20px;
  justify-content: center;
}

.link-card {
  background: rgba(255, 255, 255, 0.9);
  border-radius: 10px;
  padding: 20px;
  text-align: center;
  text-decoration: none;
  color: #333;
  transition: all 0.3s ease;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  backdrop-filter: blur(10px);
}

.link-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
  background: rgba(255, 255, 255, 1);
}

/* 响应式设计 */
@media (max-width: 768px) {
  body {
    padding: 10px;
  }
  
  h1 {
    font-size: 2rem;
    margin-bottom: 20px;
  }
  
  .links-grid {
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 15px;
  }
  
  .link-card {
    padding: 15px;
  }
}

@media (max-width: 480px) {
  h1 {
    font-size: 1.5rem;
    margin-bottom: 15px;
  }
  
  .links-grid {
    grid-template-columns: 1fr;
    gap: 10px;
  }
  
  .link-card {
    padding: 12px;
  }
}

/* 页脚样式 */
.footer {
  margin-top: 40px;
  text-align: center;
  color: white;
}

.friend-links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 20px;
}

.friend-links .menu-item {
  margin: 0;
}

.friend-links a {
  color: rgba(255, 255, 255, 0.9);
  text-decoration: none;
  transition: color 0.3s ease;
}

.friend-links a:hover {
  color: white;
  text-decoration: underline;
}