/* CSS 重置与基础样式 */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            background-color: #030407;
            color: #ffffff;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            line-height: 1.5;
        }

        /* 主导航固定在顶部 */
        .navbar {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 70px;
            background-color: #ffffff;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 0 60px;
            z-index: 1000;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
            border-bottom: 1px solid #333333;
        }

/* 1e1e21 */
        .navbar .logo {
            font-size: 20px;
            font-weight: bold;
            color: #1e1e21;
            letter-spacing: 1px;
        }

        .navbar .nav-right {
            display: flex;
            align-items: center;
            gap: 20px;
        }

        /* 多语言下拉菜单 */
        .lang-select {
            background: transparent;
            color: #1e1e21;
            border: 1px solid #444;
            padding: 6px 12px;
            border-radius: 4px;
            outline: none;
            cursor: pointer;
        }

        .lang-select option {
            background-color: #ffffff;
            color: #1e1e21;
        }

        /* 登录注册按钮 */
        .auth-buttons {
            display: flex;
            gap: 12px;
        }

        .btn {
            padding: 6px 16px;
            border-radius: 4px;
            font-size: 14px;
            cursor: pointer;
            border: none;
            transition: opacity 0.2s;
        }

        .btn-login {
            background: #00d2c4;
            color: #1e1e21;
            border: 1px solid #00d2c4;
        }

        .btn-register {
            background: #00d2c4;
            color: #1e1e21;
        }

        .btn:hover {
            opacity: 0.8;
        }

        main {
            margin-top: 70px;
        }

        /* 公共内容容器 */
        .container {
            max-width: 1600px;
            margin: 0 auto;
            width: 100%;
           padding: 0 0 0 80px;
        }

        /* Banner 区域 */
        .banner-section {
            position: relative;
            min-height: 800px;
            display: flex;
            align-items: center;
            background: url('../images/kv_09f43a3b.jpg') no-repeat right center;
            background-size:  auto 100%;
        }

        .banner-content {
            position: relative;
            z-index: 2; 
            flex: 1;
            max-width: 700px;
        }

        .banner-content h1 {
            font-size: 60px;
            margin-bottom: 20px;
            font-weight: 500;
        }
         .banner-content h1 strong{
            color: #00d2c4;
             font-weight: 500;
         }

        .banner-content p {
            font-size: 22px;
            color: #ffffff;
            margin-bottom: 0;
        }

        /* Banner 按钮容器 */
        .banner-cta {
            margin-top: 30px;
        }
        .btn-download {
            background-color: #00d2c4;
            color: #ffffff;
            padding: 14px 32px;
            border-radius: 6px;
            font-size: 16px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: background 0.3s ease, transform 0.2s ease;
            box-shadow: 0 4px 15px rgba(0, 102, 255, 0.3);
        }

        .btn-download:hover {
            background-color: #0052cc;
            transform: translateY(-2px);
        }

        .btn-download:active {
            transform: translateY(0);
        }

       

        /* 优势模块 */
        .advantage-section {
            position: relative;
            min-height: 800px;
            display: flex;
            align-items: center;
            padding-top: 80px;
            padding-bottom: 80px;
            border-radius: 50px;
        }
        .advantage-box-01{
            background:#f2f3f4 url('../images/bg_1_b7fddfd0.jpg') no-repeat right center;
            background-size: auto 100%;
            background-position: 40%;
        }
         .advantage-box-02{
            background:#f2f3f4 url('../images/bg_2_d74d9a22.jpg') no-repeat right center;
             background-size: auto 100%;
            background-position: 20%;
        }
         .advantage-box-03{
            background:#f2f3f4 url('../images/bg_3_fcbd116d.jpg') no-repeat right center;
             background-size: auto 100%;
            background-position: 40%;
        }
         .advantage-box-04{
            background:#f2f3f4 url('../images/bg_4_3c654a58.jpg') no-repeat right center;
             background-size: auto 100%;
            background-position: 40%;
        }
        .advantage-content {
            position: relative;
            z-index: 2;
            flex: 1;
            max-width: 500px;
            margin-left: 100px;
        }
        .advantage-content .advantage-number{
            max-width: 100%;
        }

        .advantage-content h2 {
            font-size: 50px;
            margin: 20px 0;
            font-weight: 700;
            color: #2d2d2d;
        }
        .advantage-section:nth-child(odd) h2{
            color: #ffffff;
        }
         .advantage-section:nth-child(odd) p{
            color: #eeeeee;
        }
        .advantage-content h2 strong{
            background: -webkit-linear-gradient(.8deg, #417df0 .3%, #1899ec 31.12%, #20c3e7 66.05%, #34f3d0 98.93%);
            background: linear-gradient(89.2deg, #417df0 .3%, #1899ec 31.12%, #20c3e7 66.05%, #34f3d0 98.93%);
            -webkit-background-clip: text;
            background-clip: text;
            text-fill-color: transparent;
            -webkit-text-fill-color: transparent;
            font-weight: 600;
        }
        .advantage-content p {
            font-size: 22px;
            color: #2d2d2d;
        }
        .advantage-content p span{
            display: block;
            line-height: 30px;
        }

        /* 底部导航 */
        .footer{
            width: 100%;
            background-color: #ffffff;
            padding: 0 60px;
            z-index: 1000;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
            border-top: 1px solid #333333;
            text-align: center;
            font-size: 16px;
            color: #1e1e21;
            padding: 50px 0;
        }