/* 传统导航栏样式 */
.traditional-nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 60px;
  background-color: #fff;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
  z-index: 1000;
}

.nav-wrapper {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  height: 100%;
  margin: 0 auto;
  padding: 0 20px;
}

.nav-logo {
  height: 40px;
}

.nav-logo img {
  height: 100%;
  max-width: 150px;
}

.nav-menu ul {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-menu li {
  margin: 0 15px;
}

.nav-menu a {
  color: #555;
  text-decoration: none;
  font-size: 16px;
  transition: color 0.3s ease;
}

.nav-menu a:hover {
  color: #4183c4;
}

/* 为主体内容添加上边距，避免被固定导航栏遮挡 */
main {
  padding-top: 70px;
}

/* 响应式设计 */
@media screen and (max-width: 768px) {
  .nav-menu {
    display: none;
  }
  
  /* 在小屏幕上可以添加一个汉堡菜单按钮 */
  .nav-wrapper {
    position: relative;
  }
  
  .nav-trigger {
    display: block;
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
  }
}