body {
    max-width: 750px;
    margin: 0 auto !important;
    height: 100vh;
    width: 100%;
    box-sizing: border-box;
    background-color: #f8f8f8;
    font-family: PingFangSC-Regular, Roboto, Helvetica Neue, Helvetica, Tahoma, Arial, PingFang SC-Light, Microsoft YaHei;
}

.a-header-1 {
    width: 100%;
    height: 100%;
    position: absolute;
    overflow: hidden;
}

.a-header-1 img {
    width: 100%;
    height: 100%;
}

.a-footer-1 {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    width: 100%;
    color: #FFFFFF;
    background-color: #1A6BFF;
}

.a-footer-1 div {
    padding: 8px 0;
    text-align: center;
    font-size: 10px;
}

.a-footer-1 div a {
    color: #FFFFFF;
    text-decoration: none;
}

.con1 {
    width: 100%;
    height: 100vh;
    margin: 0;
    padding: 0;
    position: relative;
}

.a-section-1 {
    width: 100%;
    text-align: center;
}

.sec1-title {
    width: 81%;
    font-size: 30px;
    font-weight: 700;
    background-image: url(../picture/img1.png);
    background-repeat: no-repeat;
    background-size: 100% 100%;
    padding: 5% 0;
    text-align: center;
    color: #fff;
    position: absolute;
    top: 25%;
    left: 50%;
    z-index: 9;
    height: auto;
    transform: translate(-50%);
}

.sec1-content {
    position: absolute;
    top: 38%;
    z-index: 10;
    width: 81%;
    height: auto;
    left: 9%;
    display: block;
}

.sec1-content-box {
    position: relative;
    background-image: url(../picture/img2.png);
    background-repeat: no-repeat;
    background-size: 100% 100%
}

.sec1-content-word {
    padding: 5% 8%;
    width: 100%;
    position: relative;
    left: 0;
    top: 0;
    z-index: 1;
}

.sec1-content-title {
    font-size: 30px;
    color: #03267d;
    font-weight: 700;
    text-align: center;
}

.sec1-content-text {
    font-size: 20px;
    color: #27489d;
    margin-top: 2%;
}

.sec1-input {
    font-size: 14px;
    width: 100%;
    height: 8%;
    margin-top: 1rem;
    padding: 1rem 2rem;
    border-radius: 2rem;
    border: 2px solid rgba(78, 147, 234, 1);
    text-align: center;
}

.sec1-btn {
    width: 100%;
    height: 40px;
    color: #fff;
    margin-top: 20px;
    line-height: 40px;
    border-radius: 2rem;
    background-color: #1a6bff;
    display: block;
    box-shadow: 0 4px 8px #0000001a;
    text-align: center;
    cursor: pointer;
}

.error {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    z-index: 99999;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.7);
}

.hidden {
    display: none;
}

.visible {
    display: block;
}

.error-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    padding: 30px;
    line-height: 1.5;
    word-break: break-all;
    overflow: auto;
    font-size: 18px;
    color: #fff;
    background: rgba(0, 0, 0, 0.8);
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.5);
    width: 80%;
    margin: auto;
    box-sizing: border-box;
}

.sec1-dt {
    width: 100%;
}

.sec1-dt img {
    width: 100%;
    height: 100%;
}

@media screen and (max-width: 576px) {
    .sec1-title {
        font-size: 24px;
        top: 27%;
    }

    .sec1-content-word {
        position: relative;
        padding: 8% 6%;
        top: 0;
        left: 0;
        z-index: 1;
        width: 100%
    }

    .sec1-content-title {
        font-size: 20px;
    }

    .sec1-content-text {
        font-size: 14px;
    }
}