/* 头部样式 */
.header {
   
    color: rgb(0, 0, 0);
   
    display: flex;
    height: 43.5rem;
    justify-content: space-between;
    background: url(../img/header2.jpg) no-repeat;
    background-size: 100% 100%;
  
}

a{
    text-decoration: none;
    color: #000000; 
}

.header .menu{
    font-family: "arialbd";
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 2.5rem;
    float: right;
    color: #fff;
    width: 53rem;
    margin-right: 7rem;
    height: 9rem;
}

/* 导航菜单 */
.nav {
    background: #666;
    padding: 1.5rem;
    margin-bottom: 3rem;
    display: none;
}

.logo {
   
   
   
    
}

.logolab1{
    font-size: 10rem;
    font-style: italic;
    font-weight: 1000;
}
.logolab2{
    font-size: 4rem;
    font-weight: bold;
   
}

/* 新增轮播样式 */
.slider-container {
    position: relative;
    width: 100%;
    height: 63rem;
    overflow: hidden;
    /* border-radius: 1rem; */
}

.slider-item {
    position: absolute;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.5s ease-in-out;
}

.slider-item.active {
    opacity: 1;
}

.slider-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.slider-prev,
.slider-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255,255,255,0.3);
    border: none;
    padding: 1rem 1.5rem;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s ease;
}

.slider-prev:hover,
.slider-next:hover {
    background: rgba(255,255,255,0.8);
}

.slider-prev {
    left: 2rem;
}

.slider-next {
    right: 2rem;
}

.yincang{
    transform: scale(0);
}
/* 添加在文件任意位置 */
.wzgd {
    width: 100%;
    overflow: hidden;
    height: 10rem;
}

.wzgd p {
    text-align: center;
    font-size: 6rem;
    line-height: 10rem;
    font-family: Arial, Helvetica, sans-serif;
    /* white-space: nowrap;
    animation: scroll 20s linear infinite;
    line-height: 10rem;
    font-size: 10rem;
    color: #000000;
    margin: 0; */
}

@keyframes scroll {
    0% {
        transform: translateX(100%);
    }
    100% {
        transform: translateX(-100%);
    }
}
.wzgd:hover p {
    animation-play-state: paused;
}




/* 新增电脑端隐藏按钮 */
.menu-toggle {
    display: none;
}

.nav {
    display: flex;
    /* 修改前代码保持不动 */
    background: #fff;
    position: absolute;
    top: 0rem;
    left: 0;
    width: 100%;
    flex-direction: column;
    z-index: 100;
    font-size: 10rem;
    height: 100vh;
    /* 新增动画属性 */
    opacity: 0;
    transform: translateX(-100%);
    transition: all 0.3s ease-in-out;
    visibility: hidden;
    font-family: "arialbd";
}

.main-content{
    padding-left: 1.5rem;
    padding-right: 1.5rem;

}

.nav.active {
    display: flex;
    opacity: 1;
    transform: translateX(0);
    visibility: visible;
}
.nav a {
   padding: 5rem 0 5rem 10rem; 
}
.menutitle{
    text-align: center;
}



/* 手机端适配 (屏幕小于768px) */
@media (max-width: 768px) {
    .menu {
        display: none !important;
    }
    .header {
        height: 47.5rem; 
    }

    .logolab1{
        font-size: 20rem;
        font-style: italic;
        font-weight: 1000;
    }
    .logolab2{
        font-size: 8rem;
        font-weight: bold;
       
    }
    /* 新增汉堡菜单按钮 */
    .menu-toggle {
        display: block !important;
        position: absolute;
        right: 4rem;
        top: 2rem;
        background: none;
        border: none;
        font-size: 20rem;
        color: #000000;
    }
    .slider-container {
       
        height: 65rem;
    
    }
    .video-switcher {
       
        margin: 2rem 0 18rem 0 !important;
      
    }
    
    .teardown__item{
        font-size: 5.5rem !important;
     }

   .teardown__toTop svg{
      width: 18px;
      height: 28px;
   }
}

.xiafang{
    width: 100%;
    height: 100%; 
}


.xiafang img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.slider-dots {
    position: absolute;
    right: 2rem;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}

.dot {
    display: inline-block;
    width: 1.4rem;
    height: 1.4rem;
    margin: 0.3rem 0;
    background-color: #bbb;
    border-radius: 50%;
    cursor: pointer;
    transition: background-color 0.3s;
    
}

.dot.active {
    background-color: #717171;
}






/* 视频切换模块样式 */
.video-switcher {
    position: relative;
    margin: 2rem 0 9rem 0;
    height: 94rem;
}

.video-container {
    width: 100%;
    height: calc(100% - 5rem);
    text-align: center;
}

.video-item {
    width: 100%;
    max-height: 100%;
}

.video-prev, .video-next {
    position: absolute;
    top: 0;
    transform: translateY(-50%);
    background: rgba(255,255,255,0.0);
    border: none;
    padding: 1rem 1.5rem;
    border-radius: 50%;
    cursor: pointer;
    color: #c0c1c2;
    transition: all 0.3s ease;
    font-size: 10rem;
    /* width: 5rem; */
    /* height: 5rem; */
}

.video-prev:hover, .video-next:hover {
    background: rgba(255,255,255,0.0);
}

.video-prev {
    left: 2rem;
    font-family: "xiti"
}

.video-next {
    right: 2rem;
    font-family: "xiti"
}

.video-tabs {
    text-align: center;
    height: 5rem;
    width: calc(100% - 32rem);
    margin-left: 16rem;
    display: flex;
}

.video-tab {
    display: inline-block;
    flex: 1;
    /* width: 1.4rem; */
    height: 1rem;
    margin: 0 0.3rem;
    background-color: #bbb;
    /* border-radius: 50%; */
    cursor: pointer;
    transition: background-color 0.3s;
}

.video-tab.active {
    background-color: #717171;
}