.navbar {
    display: flex;
    justify-content: flex-start;
    padding: 0 40px;
    align-items: center;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 60px;
    background-color: rgba(0, 10, 42, 0.2);
    z-index: 3;
    transition: background-color 0.3s ease-in-out;
}

.navbar .logo .top-logo.white{
    display: block;
}

.navbar .logo .top-logo.blue{
    display: none;
}

.navbar.fill-bg{
    background-color: rgba(0, 10, 42, .8);
}

.navbar.transparent{
    background-color: rgba(0, 0, 0, 0);
}

.navbar.transparent .logo .top-logo.white{
    display: block;
}

.navbar.transparent .logo .top-logo.blue{
    display: none;
}

.navbar.white-bg .menu-tel {
    color: black;
}

.navbar.transparent .side-menu>.side-menu-btn>.btn{
    color: rgba(255, 255, 255, .7);
}

.navbar.white-bg .side-menu>.side-menu-btn>.btn{
    color: rgba(0, 0, 0, .5);
}

/* 优化：使用CSS数据属性选择器自动设置active状态，避免JavaScript闪烁 */
.navbar[data-current-menu="home"] .side-menu .side-menu-btn.home .btn,
.navbar[data-current-menu="case"] .side-menu .side-menu-btn.case .btn,
.navbar[data-current-menu="process"] .side-menu .side-menu-btn.process .btn,
.navbar[data-current-menu="about"] .side-menu .side-menu-btn.about .btn,
.navbar[data-current-menu="report"] .side-menu .side-menu-btn.report .btn,
.navbar[data-current-menu="contact"] .side-menu .side-menu-btn.contact .btn,
.navbar[data-current-menu="products"] .side-menu .side-menu-btn.products .btn,
.navbar[data-current-menu="other"] .side-menu .side-menu-btn.other .btn {
    color: #fff;
}

.navbar[data-current-menu="home"] .side-menu .side-menu-btn.home .btn:before,
.navbar[data-current-menu="case"] .side-menu .side-menu-btn.case .btn:before,
.navbar[data-current-menu="process"] .side-menu .side-menu-btn.process .btn:before,
.navbar[data-current-menu="about"] .side-menu .side-menu-btn.about .btn:before,
.navbar[data-current-menu="report"] .side-menu .side-menu-btn.report .btn:before,
.navbar[data-current-menu="contact"] .side-menu .side-menu-btn.contact .btn:before,
.navbar[data-current-menu="products"] .side-menu .side-menu-btn.products .btn:before,
.navbar[data-current-menu="other"] .side-menu .side-menu-btn.other .btn:before {
    border-color: #fff;
    backface-visibility: hidden;
    width: 70%;
}

/* 白色背景下的active状态 */
.navbar.white-bg[data-current-menu="home"] .side-menu .side-menu-btn.home .btn,
.navbar.white-bg[data-current-menu="case"] .side-menu .side-menu-btn.case .btn,
.navbar.white-bg[data-current-menu="process"] .side-menu .side-menu-btn.process .btn,
.navbar.white-bg[data-current-menu="about"] .side-menu .side-menu-btn.about .btn,
.navbar.white-bg[data-current-menu="report"] .side-menu .side-menu-btn.report .btn,
.navbar.white-bg[data-current-menu="contact"] .side-menu .side-menu-btn.contact .btn,
.navbar.white-bg[data-current-menu="products"] .side-menu .side-menu-btn.products .btn,
.navbar.white-bg[data-current-menu="other"] .side-menu .side-menu-btn.other .btn {
    color: rgba(0, 0, 0, 1);
}

.navbar.white-bg[data-current-menu="home"] .side-menu .side-menu-btn.home .btn:before,
.navbar.white-bg[data-current-menu="case"] .side-menu .side-menu-btn.case .btn:before,
.navbar.white-bg[data-current-menu="process"] .side-menu .side-menu-btn.process .btn:before,
.navbar.white-bg[data-current-menu="about"] .side-menu .side-menu-btn.about .btn:before,
.navbar.white-bg[data-current-menu="report"] .side-menu .side-menu-btn.report .btn:before,
.navbar.white-bg[data-current-menu="contact"] .side-menu .side-menu-btn.contact .btn:before,
.navbar.white-bg[data-current-menu="products"] .side-menu .side-menu-btn.products .btn:before,
.navbar.white-bg[data-current-menu="other"] .side-menu .side-menu-btn.other .btn:before {
    border-color: #207893;
    width: 70%;
}

.navbar.white-bg .side-menu>.side-menu-btn>.btn:before {
    backface-visibility: hidden;
    border: 1px solid rgba(255, 255, 255, 0);
}

.navbar.white-bg .side-menu>.side-menu-btn>.btn:hover:before {
    border-color: #207893;
}

.navbar.white-bg {
    background-color: rgba(255, 255, 255, 1);
    box-shadow: 0 2px 10px 0 rgb(0 0 0 / 7%);
}

.navbar.white-bg .logo .top-logo.white{
    display: none;
}

.navbar.white-bg .logo .top-logo.blue{
    display: block;
}

.side-menu {
    float: right;
    display: flex;
    justify-content: flex-end;
    align-items: center;
    margin-left: 40px;
    flex: auto 1 1;
}

.menu-tel {
    float: right;
    display: flex;
    padding: 1% 0;
    justify-content: flex-end;
    align-items: center;
    margin-left: 40px;
    flex: auto 0 0;
    color: rgba(255, 255, 255, .9);
    font-size: 1.15rem;
}

.top-logo  {
    float: left;
    height: 40px;
    padding: 10px;
}

.top-logo img  {
    height: 40px;
}

.side-menu>.side-menu-btn>.btn{
    position: relative;
    display: block;
    background-color: transparent;
    color: rgba(255, 255, 255, .3);
    cursor: pointer;
    font-size: 1.15rem;
    line-height: 50px;
    max-width: 160px;
    text-decoration: none;
    margin: 0px 1rem;
    width: 100%;
    font-weight: 400;
    border: 0 none;
    outline: 0 none;
    text-align: center;
    transition: color 0.3s ease-in-out; /* 添加颜色过渡动画 */
}

.side-menu>.side-menu-btn>.btn:before {
  backface-visibility: hidden;
  border: 1px solid rgba(255, 255, 255, 0);
  bottom: 0px;
  content: "";
  display: block;
  margin: 0 auto;
  position: relative;
  transition: all 280ms ease-in-out;
  width: 0%;
}

.side-menu>.side-menu-btn>.btn:hover:before {
  display: block;
  backface-visibility: hidden;
  border-color: #fff;
  transition: width 350ms ease-in-out;
  width: 70%;
}

.side-menu>.side-menu-btn>.btn:hover:before {
  bottom: auto;
  top: 0;
}

/* 移除原有的active类样式，因为我们使用CSS选择器替代 */
/* .side-menu>.side-menu-btn>.btn.active {
    color: #fff;
}

.side-menu>.side-menu-btn>.btn.active:before {
    border-color: #fff;
    backface-visibility: hidden;
    width: 70%;
} */

.navbar .nav-icon {
    width: 40px;
    height: 40px;
    position: relative;
    margin: 10px 0 0 10px;
    -webkit-transform: rotate(0deg);
    -moz-transform: rotate(0deg);
    -o-transform: rotate(0deg);
    transform: rotate(0deg);
    -webkit-transition: .5s ease-in-out;
    -moz-transition: .5s ease-in-out;
    -o-transition: .5s ease-in-out;
    transition: .5s ease-in-out;
    cursor: pointer;
    z-index: 10;
    display: none;
}

.navbar.white-bg .nav-icon span {
    background: black;
}

.navbar .nav-icon span {
    display: block;
    position: absolute;
    height: 5px;
    width: 90%;
    background: #FFF;
    border-radius: 9px;
    opacity: 1;
    left: 0;
    -webkit-transform: rotate(0deg);
    -moz-transform: rotate(0deg);
    -o-transform: rotate(0deg);
    transform: rotate(0deg);
    -webkit-transition: .25s ease-in-out;
    -moz-transition: .25s ease-in-out;
    -o-transition: .25s ease-in-out;
    transition: .25s ease-in-out;
}

/* Icon 3 */

.navbar .nav-icon span:nth-child(1) {
    top: 0px;
}
  
.navbar .nav-icon span:nth-child(2),.navbar .nav-icon span:nth-child(3) {
    top: 12px;
}
  
.navbar .nav-icon span:nth-child(4) {
    top: 24px;
}

.navbar .nav-icon.open span:nth-child(1) {
    top: 12px;
    width: 0%;
    left: 50%;
}

.navbar .nav-icon.open span:nth-child(2) {
    -webkit-transform: rotate(45deg);
    -moz-transform: rotate(45deg);
    -o-transform: rotate(45deg);
    transform: rotate(45deg);
}

.navbar .nav-icon.open span:nth-child(3) {
    -webkit-transform: rotate(-45deg);
    -moz-transform: rotate(-45deg);
    -o-transform: rotate(-45deg);
    transform: rotate(-45deg);
}

.navbar .nav-icon.open span:nth-child(4) {
    top: 12px;
    width: 0%;
    left: 50%;
}

.navbar .sidebar {
    position: fixed;
    top: 0;
    right: 0;
    width: 0;
    background-color: #000;
    z-index: 5;
    height: 100%;
    display: none;
    color: #FFF;
    padding: 60px 20px;
    transition: width .3s ease;
}

.navbar.white-bg .sidebar {
    background-color: #FFF;
    box-shadow: 0 2px 10px 0 rgb(0 0 0 / 7%);
}

.navbar .sidebar .sidebar-menu .side-menu-btn {
    padding: 1rem 0;
    border-bottom:1px solid rgba(255, 255, 255, .9);
    transition: color .3s ease-in;
}

.navbar .sidebar .sidebar-menu .side-menu-btn:hover {
    cursor: pointer;
    color: #aaa;
}

.navbar.white-bg .sidebar .sidebar-menu .side-menu-btn {
    border-bottom:1px solid #ccc;
}

/* 侧边栏的active状态（移动端） */
.navbar[data-current-menu="home"] .sidebar .side-menu-btn.home .btn,
.navbar[data-current-menu="case"] .sidebar .side-menu-btn.case .btn,
.navbar[data-current-menu="process"] .sidebar .side-menu-btn.process .btn,
.navbar[data-current-menu="about"] .sidebar .side-menu-btn.about .btn,
.navbar[data-current-menu="report"] .sidebar .side-menu-btn.report .btn,
.navbar[data-current-menu="contact"] .sidebar .side-menu-btn.contact .btn,
.navbar[data-current-menu="products"] .sidebar .side-menu-btn.products .btn,
.navbar[data-current-menu="other"] .sidebar .side-menu-btn.other .btn {
    color: #4590D3 !important;
    font-weight: bold;
}

.navbar.white-bg .sidebar .sidebar-menu .side-menu-btn>.btn {
    color: rgb(102, 102, 102);
    transition: color 0.3s ease-in-out; /* 添加颜色过渡动画 */
}

.navbar.white-bg .sidebar .sidebar-menu .side-menu-btn:hover>.btn {
    cursor: pointer;
    color: #4590D3;
}

.navbar .sidebar .sidebar-menu .side-menu-btn>.btn {
    font-size: 1.5rem;
    display: block;
    width: 100%;
    height: 100%;
}

.navbar .sidebar.show {
    display: block;
    width: 50%;
}

.navbar .sidebar.show .sidebar-menu .side-menu-btn:nth-child(1) {
    animation: slideIn .4s ease-in;
}
.navbar .sidebar.show .sidebar-menu .side-menu-btn:nth-child(2) {
    animation: slideIn .6s ease-in;
}
.navbar .sidebar.show .sidebar-menu .side-menu-btn:nth-child(3) {
    animation: slideIn .8s ease-in;
}
.navbar .sidebar.show .sidebar-menu .side-menu-btn:nth-child(4) {
    animation: slideIn .10s ease-in;
}
.navbar .sidebar.show .sidebar-menu .side-menu-btn:nth-child(5) {
    animation: slideIn .12s ease-in;
}
.navbar .sidebar.show .sidebar-menu .side-menu-btn:nth-child(6) {
    animation: slideIn .14s ease-in;
}

@keyframes slideIn {
    0% {
      transform: translateX(-2%);
    }
    100% {
      transform: translateX(0);
    }
}

@media screen and (max-width:1100px){
    .navbar {
        padding: 0 10px;
    }
    .side-menu {
        margin-left: 10px;
    }
    .top-logo  {
        width: 130px;
        padding: 5px;
    }
}

@media screen and (min-width:320px) and (max-width:768px) {
    .menu-tel { 
        margin-left: 0px;
    }
    
    .navbar {
        padding: 0 10px;
        height: 40px;
    }
    .side-menu {
        display: none;
    }
    .top-logo  {
        height: 30px;
        width: auto;
        padding: 5px;
    }

    .top-logo img {
        height: 30px;
    }
    .navbar .nav-icon {
        display: block;
        width: 30px;
        height: 30px;
        margin: 5px 0 0 5px;
    }

    .navbar .nav-icon span {
        height: 2px;
        width: 95%;
    }

    /* Icon 3 */

    .navbar .nav-icon span:nth-child(1) {
        top: 0px;
    }
    
    .navbar .nav-icon span:nth-child(2),.navbar .nav-icon span:nth-child(3) {
        top: 10px;
    }
    
    .navbar .nav-icon span:nth-child(4) {
        top: 20px;
    }

    .navbar .nav-icon.open span:nth-child(1) {
        top: 12px;
        width: 0%;
        left: 50%;
    }
    .menu-tel {
        flex-grow: 1;
    }
}

/* 其余媒体查询保持不变... */
@media (device-height:736px) and (-webkit-min-device-pixel-ratio:2){
    .navbar {
        padding: 0 10px;
        height: 40px;
    }

    .menu-tel { 
        margin-left: 0px;
    }

    .side-menu {
        display: none;
    }
    .top-logo  {
        height: 30px;
        width: auto;
        padding: 5px;
    }

    .top-logo img {
        height: 30px;
    }
    .navbar .nav-icon {
        display: block;
        width: 30px;
        height: 30px;
        margin: 5px 0 0 5px;
    }

    .navbar .nav-icon span {
        height: 2px;
        width: 95%;
    }

    .navbar .nav-icon span:nth-child(1) {
        top: 0px;
    }
    
    .navbar .nav-icon span:nth-child(2),.navbar .nav-icon span:nth-child(3) {
        top: 10px;
    }
    
    .navbar .nav-icon span:nth-child(4) {
        top: 20px;
    }

    .navbar .nav-icon.open span:nth-child(1) {
        top: 12px;
        width: 0%;
        left: 50%;
    }
    .menu-tel {
        flex-grow: 1;
    }
}

@media (device-height:568px) and (-webkit-min-device-pixel-ratio:2){
    .navbar {
        padding: 0 10px;
        height: 40px;
    }
    .side-menu {
        display: none;
    }

    .menu-tel { 
        margin-left: 0px;
    }

    .top-logo  {
        height: 30px;
        width: auto;
        padding: 5px;
    }

    .top-logo img {
        height: 30px;
    }
    .navbar .nav-icon {
        display: block;
        width: 30px;
        height: 30px;
        margin: 5px 0 0 5px;
    }

    .navbar .nav-icon span {
        height: 2px;
        width: 95%;
    }

    .navbar .nav-icon span:nth-child(1) {
        top: 0px;
    }
    
    .navbar .nav-icon span:nth-child(2),.navbar .nav-icon span:nth-child(3) {
        top: 10px;
    }
    
    .navbar .nav-icon span:nth-child(4) {
        top: 20px;
    }

    .navbar .nav-icon.open span:nth-child(1) {
        top: 12px;
        width: 0%;
        left: 50%;
    }
    .menu-tel {
        flex-grow: 1;
        margin-left: 0px;
    }
}

@media (device-height:667px) and (-webkit-min-device-pixel-ratio:2){
    .navbar {
        padding: 0 10px;
        height: 40px;
    }
    .side-menu {
        display: none;
    }
    .top-logo  {
        height: 30px;
        width: auto;
        padding: 5px;
    }

    .top-logo img {
        height: 30px;
    }
    .navbar .nav-icon {
        display: block;
        width: 30px;
        height: 30px;
        margin: 5px 0 0 5px;
    }

    .navbar .nav-icon span {
        height: 2px;
        width: 95%;
    }

    .navbar .nav-icon span:nth-child(1) {
        top: 0px;
    }
    
    .navbar .nav-icon span:nth-child(2),.navbar .nav-icon span:nth-child(3) {
        top: 10px;
    }
    
    .navbar .nav-icon span:nth-child(4) {
        top: 20px;
    }

    .navbar .nav-icon.open span:nth-child(1) {
        top: 12px;
        width: 0%;
        left: 50%;
    }
    .menu-tel {
        flex-grow: 1;
        margin-left: 0px;
    }
}

@media (device-height:480px) and (-webkit-min-device-pixel-ratio:2){
    .navbar {
        padding: 0 10px;
        height: 40px;
    }
    .side-menu {
        display: none;
    }
    .top-logo  {
        height: 30px;
        width: auto;
        padding: 5px;
    }

    .top-logo img {
        height: 30px;
    }
    .navbar .nav-icon {
        display: block;
        width: 30px;
        height: 30px;
        margin: 5px 0 0 5px;
    }

    .navbar .nav-icon span {
        height: 2px;
        width: 95%;
    }

    .navbar .nav-icon span:nth-child(1) {
        top: 0px;
    }
    
    .navbar .nav-icon span:nth-child(2),.navbar .nav-icon span:nth-child(3) {
        top: 10px;
    }
    
    .navbar .nav-icon span:nth-child(4) {
        top: 20px;
    }

    .navbar .nav-icon.open span:nth-child(1) {
        top: 12px;
        width: 0%;
        left: 50%;
    }
    .menu-tel {
        flex-grow: 1;
        margin-left: 0px;
    }
}

@media only screen and (device-width: 375px)
and (device-height: 812px) and (-webkit-device-pixel-ratio: 3) {
    .navbar {
        padding: 0 10px;
        height: 40px;
    }
    .side-menu {
        display: none;
    }
    .top-logo  {
        height: 30px;
        width: auto;
        padding: 5px;
    }

    .top-logo img {
        height: 30px;
    }
    .navbar .nav-icon {
        display: block;
        width: 30px;
        height: 30px;
        margin: 5px 0 0 5px;
    }

    .navbar .nav-icon span {
        height: 2px;
        width: 95%;
    }

    .navbar .nav-icon span:nth-child(1) {
        top: 0px;
    }
    
    .navbar .nav-icon span:nth-child(2),.navbar .nav-icon span:nth-child(3) {
        top: 10px;
    }
    
    .navbar .nav-icon span:nth-child(4) {
        top: 20px;
    }

    .navbar .nav-icon.open span:nth-child(1) {
        top: 12px;
        width: 0%;
        left: 50%;
    }
    .menu-tel {
        flex-grow: 1;
        margin-left: 0px;
    }
}

@media only screen and (device-width: 280px) and (device-height: 653px) {
    .navbar {
        padding: 0 10px;
        height: 40px;
    }
    .side-menu {
        display: none;
    }
    .top-logo  {
        height: 30px;
        width: auto !important;
        padding: 5px;
    }

    .top-logo img {
        height: 30px;
    }

    .navbar .sidebar.show {
        width: 70%;
    }

    .navbar .nav-icon {
        display: block;
        width: 30px;
        height: 30px;
        margin: 5px 0 0 5px;
    }

    .navbar .nav-icon span {
        height: 2px;
        width: 95%;
    }

    .navbar .nav-icon span:nth-child(1) {
        top: 0px;
    }
    
    .navbar .nav-icon span:nth-child(2),.navbar .nav-icon span:nth-child(3) {
        top: 10px;
    }
    
    .navbar .nav-icon span:nth-child(4) {
        top: 20px;
    }

    .navbar .nav-icon.open span:nth-child(1) {
        top: 12px;
        width: 0%;
        left: 50%;
    }
    .menu-tel {
        flex-grow: 1;
        margin-left: 0px;
        font-size: 1rem;
    }
}