html, body {
    margin: 0;
    padding: 0;
    font-size: 100px;
}

.body {
    min-width: 1200px;
    font-family: PingFang SC;
    font-weight: 400;
}

a {
    color: inherit;
    text-decoration: none;
}

.top {
    background-size: 100% 100%;
    padding: .1px;
    font-size: .22rem;
    background-image: url("./../images/download/bg.png");
}
.login{
    width: 0.88rem;
    height: 0.6rem;
    background: #5746ED;
    border-radius: 0.3rem 0.3rem 0.3rem 0.3rem;
    font-weight: 500;
    font-size: 0.22rem;
    color: #FFFFFF;
    display: inline-block;
    text-align: center;
    line-height: .6rem;
}
.top_header {
    height: 1.5rem;
    display: flex;
}

.top_header > div {
    flex: 1;
}

.top_header_left {

}

.top_header_center {
    justify-content: space-around;
    display: flex;
}

.top_header_center_item:hover {
    color: #5A42EC;
}

.top_header_center > div {
    line-height: 1.5rem;
    width: 1.8rem;
    text-align: center;
    cursor: pointer;
}

.top_produce {
    display: none;
    position: absolute;
    top: .8rem;
    left: 50%;
    transform: translateX(-50%);
    width: 80%;
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    z-index: 999;
}

.top_header_right {
    display: flex;
    justify-content: flex-end;
}

.top_header_right > div {
    line-height: 1.5rem;
    margin-right: .4rem;
}

.top_header_right img {
    display: inline-block;
    width: .27rem;
    height: .27rem;
    vertical-align: sub;
}

div.top_produce {
    display: none;
    position: fixed;
    height: 6.68rem;
    background: white;
    width: 100%;
    top: 1rem;
}

.top_produce > div {
    margin: 0.41rem .25rem 0.79rem;
    display: flex;
    height: 5.48rem;
}

.top_produce_left,
.top_produce_center,
.top_produce_right {
    flex: 1;
    width: 33.33%;
}

.top_produce_center {
    border-left: 1px solid gainsboro;
}

.top_produce_right {
    border-left: 1px solid gainsboro;
}

.top_produce_left:hover,.top_produce_center:hover,.top_produce_right:hover{
    background: linear-gradient( 180deg, #EFEFFF 0%, #E8F5FF 100%);
}

/* 价格和方案悬浮菜单样式 */
.top_pricing {
    display: none;
    position: fixed;
    background: white;
    width: 100%;
    top: 1rem;
    left: 0;
    z-index: 999;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.top_pricing > div {
    padding: 0.6rem 0.6rem 0.8rem;
    display: flex;
    justify-content: center;
    gap: 1rem;
}

.top_pricing_item {
    width: 10rem;
    padding: 0.3rem 0.5rem;
    transition: background 0.3s ease;
}

.top_pricing_item:hover {
    background: linear-gradient(180deg, #EFEFFF 0%, #E8F5FF 100%);
}

.top_pricing_header {
    font-size: 0.3rem;
    color: #0C0C0C;
    border-bottom: 2px solid #666666;
    display: inline-block;
    line-height: .6rem;
    cursor: pointer;
    margin-bottom: .3rem;
}

.top_pricing_header a {
    color: #0C0C0C;
    text-decoration: none;
}

.top_pricing_header:hover a {
    color: #5538E9;
}

.top_pricing_desc {
    font-size: 0.18rem;
    color: #999999;
    line-height: 0.32rem;
}

.top_produce_header {
    font-size: 0.34rem;
    color: #0C0C0C;
    border-bottom: 2px solid #666666;;
    display: inline-block;
    line-height: .7rem;
    cursor: pointer;
    margin-bottom: .6rem;
}

.top_produce > div > div {
    padding: .2rem .2rem .1rem;
}

.top_produce_header:hover {
    color: #5538E9;
}

.top_produce_list {
    display: flex;
    justify-content: space-between;
}

.top_produce_item {
    width: 2.65rem;
    font-size: 0.18rem;
    color: #999999;
    line-height: 0.24rem;
}

.product_item_title {
    font-size: .24rem;
    color: #0c0c0c;
    margin-bottom: .16rem;
}

.product_item_desc {
    font-size: .18rem;
    color: #999999;
    margin-bottom: .6rem;
}

.top_produce_right {
    flex: 1;
    border-left: 1px solid gainsboro;
}

.top_main {
    margin: .5rem 2rem;
}
.top_main_left_title{
    font-weight: 600;
    font-size: 0.76rem;
    color: #593CE9;
    margin-top: 1rem;
}
.top_main_left_desc{
    font-weight: 600;
    font-size: 0.6rem;
    color: #593CE9;
    margin-top: .4rem;
    margin-bottom: 2.55rem;
}
.title{
    margin-top: 1.73rem;
    margin-bottom: 1.26rem;
    text-align: center;
    font-weight: 600;
    font-size: 0.76rem;
    color: #593CE9;
}

.second{
    background: #FFFFFF;
    border-radius: .43rem;
    display: flex;
    position: relative;
    justify-content: space-around;
}
.second_item img{
    max-width: 3rem;
    height: 2.56rem;
    display: block;
    margin:0 auto
}
.second_item {
    max-width: 3.4rem;
}
.second_title{
    font-weight: 600;
    font-size: 0.44rem;
    color: #593CE9;
    text-align: center;
    margin-top: .84rem;
}
.second_desc{
    font-weight: 300;
    font-size: 0.26rem;
    color: #000000;
    text-align: center;
    margin-bottom: .7rem;
    margin-top: .35rem;
    height: .8rem;
}
.second_btn{
    background: #0BC85B;
    border-radius: 0.32rem;
    display: block;
    font-size: .16rem;
    padding: .2em .2rem;
    width: 2rem;
    text-align: center;
    margin: 0 auto 1.7rem;
    height: .64rem;
    line-height: .64rem;
    color: white;
}
.second_btn.black{
    background: #000000;
}
.second_btn.blue{
    background: #1088EF;
}
.second_btn img{
    width: .28rem;
    height: .28rem;
    vertical-align: text-top;
    display: inline-block;
    text-align: center;
    margin-right: .1rem;
}
.third{
    background: #3E4155;
    padding:.1px;
}

.third_title{
    font-weight: 600;
    font-size: 0.64rem;
    color: #FFFFFF;
    margin-top: 1.54rem;
    margin-bottom: .75rem;
    text-align: center;
}
.third_desc{
    font-weight: 400;
    font-size: 0.34rem;
    color: #FFFFFF;
    margin-bottom: 1.73rem;
    text-align: center;
}

/* --- Animations Application --- */

/* Set initial state for elements that will be animated */
.second_item {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

/* The .visible class will be added by JavaScript to trigger the transition */
.second_item.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger the animation for a nicer effect */
.second_item:nth-child(1) { transition-delay: 0.1s; }
.second_item:nth-child(2) { transition-delay: 0.2s; }
.second_item:nth-child(3) { transition-delay: 0.3s; }
.second_item:nth-child(4) { transition-delay: 0.4s; }

.top_header_fixed {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: white;
    z-index: 1000;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    margin-top: 0;
}