/* index页面样式 */
body {
    margin: 0;
    padding: 0;
    overflow: hidden;
    font-family: '微软雅黑', Arial, sans-serif;
}

.index-page {
    position: relative;
    width: 100%;
    height: 100vh;
    min-height: 100vh;
    overflow: hidden;
}

/* 背景层 */
.index-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.index-bg-pc {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url(../images/max_bg1.jpg) center center no-repeat;
    background-size: cover;
    background-attachment: fixed;
}

.index-bg-mobile {
    display: none;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url(../images/min.jpg) center center no-repeat;
    background-size: cover;
}

/* 视频层 */
.index-video-wrapper {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2;
    overflow: hidden;
}

.index-video {
    
}

/* 按钮层 */
.index-btn-wrapper {
    position: absolute;
    left: 50%;
    bottom: 30px;
    -webkit-transform: translateX(-50%);
    -moz-transform: translateX(-50%);
    -ms-transform: translateX(-50%);
    transform: translateX(-50%);
    z-index: 3;
    text-align: center;
}

.index-btn {
    display: inline-block;
    cursor: pointer;
    text-decoration: none;
    animation: btnPulse 2s ease-in-out infinite;
    -webkit-animation: btnPulse 2s ease-in-out infinite;
}

.index-btn img {
    display: block;
    max-width: 100%;
    height: auto;
}

/* 按钮动画 */
@-webkit-keyframes btnPulse {
    0%, 100% {
        -webkit-transform: scale(1);
    }
    50% {
        -webkit-transform: scale(1.05);
    }
}

@-moz-keyframes btnPulse {
    0%, 100% {
        -moz-transform: scale(1);
    }
    50% {
        -moz-transform: scale(1.05);
    }
}

@-ms-keyframes btnPulse {
    0%, 100% {
        -ms-transform: scale(1);
    }
    50% {
        -ms-transform: scale(1.05);
    }
}

@keyframes btnPulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

/* IE9兼容 */
.ie9 .index-btn {
    filter: alpha(opacity=100);
}

.ie9 .index-btn-wrapper {
    left: 50%;
    bottom: 100px;
    margin-left: -100px; /* 需要根据按钮实际宽度调整 */
}

/* IE9视频兼容 */
.ie9 .index-video-wrapper {
    display: none; /* IE9不支持video，隐藏视频层 */
}

/* 移动端样式 */
@media screen and (max-width: 768px) {
    .index-bg-pc {
        display: none;
    }
    
    .index-bg-mobile {
        display: block;
    }
    
    .index-video-wrapper {
        display: none !important;
    }
    
    .index-btn-wrapper {
        bottom: 100px;
    }
}

/* 大屏样式 */
@media screen and (min-width: 769px) {
    .index-bg-mobile {
        display: none;
    }
}