:root {
   --vivo-blue: #1976d2;
   --vivo-cyan: #00e5ff;
   --vivo-purple: #7b1fa2;
   --vivo-dark: #121212;
   --vivo-card-bg: #1e1e1e;
   --neon-glow: 0 0 10.0001px rgba(0, 229, 255, 0.7),
     0 0 19.9999px rgba(0, 229, 255, 0.5),
     0 0 30px rgba(0, 229, 255, 0.3);
 }

 ul {
   list-style: none;
 }

 body {
   font-family: 'Montserrat', sans-serif;
   background-color: var(--vivo-dark);
   color: #fff;
   /* overflow-x: hidden; */
   /* height: 1999.9999px; */
   margin-top: 79.9999px;
 }

 .navbar {
   background-color: rgba(18, 18, 18, 0.6) !important;
   backdrop-filter: blur(10.0001px);
   border-bottom: 1.0001px solid rgba(255, 255, 255, 0.1);
   padding: 15px 0;
 }

 .navbar-brand,
 .navbar-brand:hover {
   font-size: 28.0001px;
   font-weight: 700;
   background: linear-gradient(45deg, var(--vivo-cyan), var(--vivo-blue));
   /*文字裁剪 */
   -webkit-background-clip: text;
   background-clip: text;
   color: transparent;
   text-shadow: var(--neon-glow);
 }

 .nav-link::before {
   content: '';
   position: absolute;
   left: 0;
   bottom: -4.9999px;
   width: 0;
   height: 1.9999px;
   background: linear-gradient(90deg, var(--vivo-cyan), var(--vivo-blue));
   transition: all 0.3s ease-in-out;

 }

 .nav-link:hover::before {
   width: 100%;
 }

 .nav-link {
   position: relative;
   color: rgba(255, 255, 255, 0.9);
   margin: 0 12px;


 }

 .nav-link:hover {
   text-shadow: var(--neon-glow);

 }

 .icons a:hover {
   color: var(--vivo-cyan);
   text-shadow: var(--neon-glow);
 }

 .icons a {
   font-size: 1.4rem;
   color: rgba(255, 255, 255, 0.9);
   padding: 0 10.0001px;
 }

 .banner {
   width: 100%;
   height: 50vw;
   /* background: pink; */
   mask-image: linear-gradient(rgb(0, 0, 0)80%, rgba(0, 0, 0, 0)100%);
 }

 .carousel-item img {
   width: 100%;
   height: 50vw;
   /* object-fit: cover; */
 }

 /* 
 .carousel-caption {
   bottom: 10rem;
 }

 .carousel-indicators {
   margin-bottom: 10rem;
 } */

 .hot-product .info {
   color: rgba(255, 255, 255, 0.7);
 }

 /* 卡片组 */
 .card {
   background-color: var(--vivo-card-bg);
   border-radius: 15px;
   border: 1.0001px solid rgba(255, 255, 255, 0.1);
   color: #fff;
   transition: all 0.3s ease-in-out;
   overflow: hidden;
 }

 .card:hover {
   box-shadow: var(--neon-glow);
   transform: translate(0, -10.0001px);
 }

 .card .card-img {
   padding: 15px;
   background-color: #292929;
 }

 .card .card-img img {
   animation: updown 3s linear infinite;
 }

 .row .ct {
   justify-items: center;
 }


 @keyframes updown {


   25% {
     transform: translate(0, -7.9999px);
   }

   75% {
     transform: translate(0, 7.9999px);
   }



 }

 .card .btn {
   font-weight: 600;
   color: var(--vivo-cyan);
   background: none;
   width: 100%;
   border-radius: 30px;
   border: 1.9999px solid var(--vivo-cyan);

 }

 .card .btn:hover {
   box-shadow: var(--neon-glow);
   text-shadow: var(--neon-glow);
 }

 .card .price {
   font-weight: 600;
   color: var(--vivo-cyan);
 }

 .future-tech {
   position: relative;
   background: url(../img/bg1.avif) no-repeat center center/cover fixed;
 }

 .future-tech::before {
   content: '';
   position: absolute;
   left: 0;
   top: 0;
   width: 100%;
   height: 100%;
   background-color: var(--vivo-dark);
   opacity: 0.9;

 }

 .future-icon {
   font-size: 3rem;
   color: var(--vivo-cyan);
   text-shadow: var(--neon-glow);
   margin-bottom: 19.9999px;
 }

 .future-title {
   font-size: 1.5rem;
   font-weight: 600;
   margin-bottom: 15px;
   color: #fff;
 }

 .future-desc {
   color: rgba(255, 255, 255, 0.7);
 }


 /* footer制作 */
 .footer {
   padding-top: 79.9999px;
   background-color: #0a0a0a;
 }

 .footer dt {
   font-size: 1.2rem;
   font-weight: 600;
   padding-bottom: 10.0001px;
   margin-bottom: 15px;
 }

 .footer dt::after {
   content: '';
   display: block;
   width: 49.9999px;
   height: 1.9999px;
   background: linear-gradient(90deg, var(--vivo-cyan), var(--vivo-blue));
   margin-top: 4.9999px;
 }

 .footer dd>a {
   display: block;
   text-decoration: none;
   color: rgba(255, 255, 255, 0.7);
   transition: all 0.3s ease-in-out;
   margin-bottom: 10.0001px;
 }

 .footer dd>a:hover {
   color: var(--vivo-cyan);
   transform: translate(4.9999px);
 }

 .footer .icons {
   display: flex;
   margin-top: 4.0001px;
 }

 .footer .icons a {

   width: 40.0001px;
   height: 40.0001px;
   border-radius: 50%;
   background-color: rgba(255, 255, 255, 0.1);
   margin-right: 10.0001px;

   text-align: center;
   line-height: 40.0001px;
   text-decoration: none;

   transition: all 0.3s ease-in-out;
 }

 .footer .icons a:hover {
   color: #fff;
   box-shadow: var(--neon-glow);
   background: linear-gradient(45deg, var(--vivo-cyan), var(--vivo-blue));
   transform: translate(0, -3px);
 }

 .footer .search p {
   margin-top: 10.0001px;
   color: rgba(255, 255, 255, 0.7);
 }

 .footer .search input {
   transition: all 0.3s ease-in-out;

 }

 .footer .search input:focus {
   border: none;
   box-shadow: none;
   outline: none;
   box-shadow: var(--neon-glow);
 }

 .footer .search button {
   border: 0;
   font-weight: 600;
   border-radius: 30px;
   background: linear-gradient(45deg, var(--vivo-cyan), var(--vivo-blue));
   color: #fff;
   padding: 10.0001px 25.0001px;
   transition: all 0.3s ease-in-out;
 }

 .footer .search button:hover {
   box-shadow: var(--neon-glow);
   transform: translate(0, -3px);
 }

 .footer .copyright {
   color: rgba(255, 255, 255, 0.5);
   border-top: 1.0001px solid rgba(255, 255, 255, 0.2);
 }


 /*滚动条设置宽度和高度*/
 ::-webkit-scrollbar {
   width: 10px;
 }

 /*设置轨道背景色,圆角等*/
 ::-webkit-scrollbar-track {
   background: var(--vivo-dark);
 }

 /*设置滑块样式*/
 ::-webkit-scrollbar-thumb {
   background: linear-gradient(var(--vivo-blue), var(--vivo-cyan));
   border-radius: 10px;
 }

 /*鼠标经过滑块*/
 ::-webkit-scrollbar-thumb:hover {
   background: linear-gradient(var(--vivo-cyan), var(--vivo-blue));
 }