/* 超小设备（手机） */

@media screen and (max-width:767px) {
    .section1 {
        width: 100%;
        height: calc( 135vw * 935 / 1920);
    }
    .section2 {
        width: 100%;
        height: calc( 135vw * 4175 / 1920);
    }
    .container {
        width: 100%;
        padding: 15px;
        box-sizing: border-box;
    }
    .section1 .container {
        display: flex;
        flex-direction: column;
        align-items: flex-start;
        justify-content: center;
        height: calc( 135vw * 935 / 1920);
        padding: 20px;
    }
    .section1-content h1 {
        font-size: 20px;
        margin-bottom: 6px;
    }
    .section1-subtitle {
        font-size: 12px;
        line-height: 16px;
        letter-spacing: 0px;
        margin-bottom: 6px;
    }
    .section1-desc {
        width: 60vw;
        font-size: 10px;
        line-height: 18px;
    }
    .section1-desc p {
        margin-bottom: 4px;
    }
    .footer-wrap {
        padding: 0;
        flex-wrap: wrap;
    }
    .footer-contact {
        width: 100%;
    }
    .footer-contact .contact-title {
        justify-content: center;
        margin-bottom: 10px;
        font-size: 14px;
        line-height: 18px;
    }
    .contact-item span {
        display: inline-block;
        width: 100%;
        text-align: center;
        font-size: 12px;
        line-height: 16px;
        margin-left: 0px;
    }
    .contact-item span.note {
        font-size: 10px;
        line-height: 16px;
        margin-left: 0;
    }
    .contact-item li {
        flex-wrap: wrap;
        margin-bottom: 4px;
    }
    .footer-qrcode {
        margin: 15px auto 0;
    }
    .footer-qrcode img {
        width: 90px;
    }
}

@media (min-width:768px) and (max-width:1200px) {
    .container {
        width: 100%;
        margin: 0 auto;
        box-sizing: border-box;
    }
    .section1 {
        width: 100%;
        height: calc( 120vw * 2578 / 1920);
    }
    .section2 {
        width: 100%;
        height: calc( 120vw * 2437 / 1920);
    }
    .section3 {
        width: 100%;
        height: calc( 120vw * 2383 / 1920);
    }
    .section1 .container {
        display: flex;
        flex-direction: column;
        align-items: flex-start;
        justify-content: center;
        height: calc( 120vw * 935 / 1920);
        padding: 40px;
    }
    .section1-content h1 {
        font-size: 32px;
        margin-bottom: 15px;
    }
    .section1-subtitle {
        font-size: 20px;
        line-height: 34px;
        letter-spacing: 0px;
        margin-bottom: 30px;
    }
    .section1-desc {
        width: 55vw;
        font-size: 16px;
        line-height: 24px;
    }
    .section1-desc p {
        margin-bottom: 14px;
    }
}