/* 头部导航 */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 10px 0;
  transition: all 0.4s ease;
  min-height: 80px;
  display: flex;
  align-items: center;
}

.header.scrolled {
  background: rgba(255, 255, 255, 0.95);
  padding: 10px 0;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.logo {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  text-decoration: none;
}

.header.scrolled .logo {
  color: #0066ff;
}

.layui-nav {
  background: transparent;
  padding: 0;
}

.layui-nav-item a {
  color: #fff !important;
  font-size: 1rem;
  font-weight: 500;
  padding: 8px 15px;
}

.header.scrolled .layui-nav-item a {
  color: #333 !important;
}

.layui-nav .layui-this:after,
.layui-nav-bar {
  background: #0066ff;
}