* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Microsoft YaHei', sans-serif;
            overflow: hidden;
            height: 100vh;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
        }
        
        .background {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background:url(../images/indexbg.png)no-repeat center/cover;;
            z-index: -1;
        }
        
        @keyframes gradientBG {
            0% { background-position: 0% 50%; }
            50% { background-position: 100% 50%; }
            100% { background-position: 0% 50%; }
        }
        
        .logo-container {
            margin-bottom: 80px;
            text-align: center;
            animation: fadeIn 1.5s ease-out;
        }
        
        .logo {
            width: 1021px;
            height: 287px;
            background: url(../images/2/logo.png)no-repeat center/100%;
            display: flex;
            justify-content: center;
            align-items: center;
            margin: 0 auto;
        }
        
        .logo i {
            font-size: 80px;
            color: #333;
        }
        
        .logo-text {
            margin-top: 20px;
            font-size: 32px;
            font-weight: bold;
            color: white;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
        }
        
        .buttons-container {
            display: flex;
            gap: 100px;
            animation: slideUp 1s ease-out;
        }
        
        .btn {
transform: skew(20deg);
            position: relative;
            width: 355px;
            height: 91px;
            display: flex;
            justify-content: center;
            align-items: center;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
            overflow: hidden;
            overflow: hidden;
        }
        
        .btn:hover {
            transform: skew(20deg) translateY(-5px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
        }
.btn::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    transition: 0.5s;
    opacity:0.82;
}

        .btn::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
            transition: 0.5s;
        }
        
        .btn:hover::before {
            left: 100%;
        }
        
        .btn-content {
            transform: skew(340deg);
            display: flex;
            align-items: center;
            gap: 17px;
            color: white;
            font-weight: bold;
            font-size: 38px;
            z-index: 1;
        }
        .btn i {
            font-size: 24px;
        }
        
        .btn-1 {
            background-color: ;
        }
        .btn-1:after{    background: #851818;}
        .btn-2 {
            background-color: ;
        }
        .btn-2:after{    background: #226BCE;}
        .btn-3 {
            background-color: ;
        }
        .btn-3:after{    background: #FFAC27;}
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(-20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        
        @keyframes slideUp {
            from { opacity: 0; transform: translateY(30px); }
            to { opacity: 1; transform: translateY(0); }
        }
        @media (max-width: 1300px) {
            .buttons-container {
                flex-direction: column;
                gap: 25px;
            }
            
            .logo {
                width: 440px;
                height: 140px;
            }
              .logo-container {margin-bottom: 40px;}
            .logo i {
                font-size: 60px;
            }

            .logo-text {
                font-size: 26px;
            }
            
            .btn {
                width: 320px;
            }
        }
        @media (max-width: 479px) {
.btn-content{font-size:18px;}
            .logo {
                width: 240px;
                height: 140px;
            }
    .btn {
        width: 220px;
        height: 50px;
    }
}