* {
    margin: 0;
    padding: 0;
}

/* Common styles */
.back {
    width: 100%;
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-size: 100% 100%;
}

.back .backTop {
    width: 100%;
    height: 47px;
    float: left;
}

.back .backTop img {
    width: 39px;
    height: 39px;
    float: left;
    margin-left: 34px;
}

.back .backTop .backTopLe {
    float: left;
    margin-top: 17px;
    line-height: 15px;
    margin-left: 18px;
    width: 285px;
}

.back .backTop .backTopLe .backTopLeI {
    /* font-size: 14px; */
    float: left;
    color: #F5E6E7;
    padding: 0 12px;
}

.back .backTop .backTopLe .backTopLeI a {
    color: #E6E8F5;
    font-size: 16px;
    text-decoration: none;
}

.back .backTop .backTopLe .backTopLeI a:hover {
    color: #E6E8F5;
}

.back .backTop .backTopLe .backTopLeI.active {
    border-bottom: 1px solid #E6E8F5;
    font-weight: bold;
}

.back .liebiao {
    width: 80%;
    margin: 80px auto 0;
    float: left;
    margin-left: 10%;
    background-color: #fff;
    height: 123px;
    padding: 0 20px;
    display: flex;
    align-items: center;
    gap: 10px; /* 减小间距 */
    border-radius: 10px;
}

.back .liebiao .lisbz {
    flex: 1;
    font-size: 17px;
    height: 64px;
    border-radius: 9px;
    background-color: #eff0f7;
}

.back .liebiao .lisbz input {
    background: none;
    border: none;
    font-size: 17px;
    padding-left: 25px;
    width: 100%;
    height: 64px;
    line-height: 64px;
}
.back .captcha-img{
    min-width: 100px;
    height: 48px;
}

.backTopBtn {
    width: 40%;
    margin: 60px auto 0;
    float: left;
    margin-left: 30%;
    text-align: center;
    height: 64px;
    line-height: 64px;
    color: #FFF9E7;
    letter-spacing: 3px;
    background-color: #3C6BF4;
    font-size: 20px;
    box-shadow: 0px 5px 10px 0px rgba(12,3,7,0.18);
    border-radius: 5px;
    cursor: pointer;
    border: none;
}

.backTopBtn:hover {
    cursor: pointer;
    transform: translateY(-1px); /* 鼠标悬停时微向上移动 */
    /* box-shadow: 0 6px 18px rgba(60, 107, 244, 0.3); */
}

.footer {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: #000;
    width: 100%;
    height: 72px;
}

.footer div {
    width: 60%;
    text-align: center;
    line-height: 20px;
    margin: 16px auto 0;
    font-size: 15px;
    color: #535353;
}

/* Mobile styles */
@media screen and (max-width: 1024px) {
    .back {
        width: 100%;
        top: 0;
        left: 0;
        min-width: 100%;
        bottom: 0;
        right: 0;
        background-image: url('/assets/images/2.png');
        background-size: 100% 100%;
        position: absolute;
    }

    .bg-cert{
        background-image: url('/assets/images/2.jpg');
    }

    .back .backTop {
        margin-top: 23px;
    }

    .back .backTop img {
        width: 35px;
        height: 35px;
    }

    .back .backTop .backTopLe {
        width: 285px;
        margin-top: 10px;
        line-height: 30px;
    }

    .back .backTop .backTopLe .backTopLeI {
        font-size: 25px;
    }

    .back .backTopBt {
        display: block;
        width: 100%;
        text-align: center;
        font-size: 30px;
        color: #E3C488;
        line-height: 45px;
        text-shadow: 0px 0px 4px rgba(0,0,0,0.18);
        background: linear-gradient(0deg, #FFD485 0.1220703125%, #FFF9E7 46.9970703125%, #FFD485 100%);
        background-clip: border-box;
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        font-weight: bold;
        float: left;
        padding: 56px 20px 76px 20px;
    }

    .backTopBtBA {
        display: none;
    }

    .back .liebiao {
        width: 96%;
        flex-direction: row;
        flex-wrap: wrap;
        gap: 10px;
        margin: 0px 2% 20px 2%;
        padding: 10px;
        height: auto;
        clear: both;
        border-radius: 0 0 10px 10px;
    }

    .back .liebiao .lisbz {
        width: 100%;
        padding: 0;
        margin: 0;
        height: 45px;
        line-height: 45px;
        flex: inherit;
    }

    .back .liebiao .lisbz input {
        background: none;
        border: none;
        font-size: 16px;
        width: 100%;
        padding: 0 12px;
        height: 44px;
        line-height: 44px;
      }

    .back .liebiao .captcha-container {
        width: 110px;
        height: 45px;
        display: flex;
        align-items: center;
    }

    .back .liebiao .captcha-container .captcha-img {
        width: 100%;
        height: 100%;
        object-fit: contain;
    }

    .back .liebiao .lisbz:nth-child(3) {
        width: calc(100% - 120px);
    }

    .backTopBtn {
        width: 94%;
        margin: 50px 2% 10px 2%;
        height: 75px;
        line-height: 75px;
        font-size: 14px;
        margin: 14px;
        padding: 0;
        line-height: 45px;
        height: 45px;
    }
    .footer div{
        width: 100%;
        font-size: 12px;
    }

}

/* Desktop styles */
@media screen and (min-width: 1025px) {
    .back {
        background-image: url('/assets/images/3.jpg');
        background-size: cover
    }
    .bg-cert{
        background-image: url('/assets/images/4.jpg');
    }

    .back .backTop {
        margin-top: 15px;
    }

    .back .backTop img {
        margin-top: 5px;
    }

    .back .backTop .backTopLe {
        width: 285px;
    }

    .back .backTopBt {
        display: none;
    }

    .backTopBtBA {
        display: block;
        width: 100%;
        text-align: center;
        font-size: 46px;
        color: #E3C488;
        line-height: 48px;
        text-shadow: 0px 0px 4px rgba(0,0,0,0.18);
        background: linear-gradient(0deg, #FFD485 0.1220703125%, #FFF9E7 46.9970703125%, #FFD485 100%);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        font-weight: bold;
        float: left;
        margin-top: 180px;
    }
}



/* PC端头部样式 */
@media screen and (min-width: 1025px) {
    .mobile-header,
    .mobile-tabs {
        display: none;
    }

    .pc-header {
        display: block;
    }

    .back .backTop {
        margin-top: 15px;
    }

    .back .backTop img {
        margin-top: 5px;
    }

    .back .backTop .backTopLe {
        width: 285px;
    }
}

/* 移动端头部样式 */
@media screen and (max-width: 1024px) {
    .pc-header {
        display: none;
    }
    .mobile-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 10px 15px;
        background-color: rgba(255, 255, 255, 0.1);
    }

    .mobile-header-left img {
        width: 35px;
        height: 35px;
    }

    .mobile-header-right {
        display: flex;
        gap: 15px;
    }

    .mobile-nav-item {
        color: #E6E8F5;
        text-decoration: none;
        font-size: 14px;
    }

    .mobile-nav-item:hover {
        color: #E6E8F5;
    }

    /* 移动端导航tabs样式 */
    .mobile-tabs {
        display: flex;
        justify-content: center;
        width: 96%;
        margin: 50px 2% 0px 2%;
        border-radius: 10px 10px 0 0 ;
        background-color: #fff;
        height: 45px;
        line-height: 45px;
        justify-content: space-between;
        background-color: rgba(255, 255, 255, 0.1);
    }

    .mobile-tab-item {
        flex: 1;
        color: #E6E8F5;
        text-decoration: none;
        font-size: 18px;
        font-weight: bold;
        text-align: center;
        transition: all 0.3s ease;
    }

    .mobile-tab-item.active {
        color: #DD1307;
        background-color: #fff;
        position: relative;
    }

}