* {
    padding: 0;
    margin: 0;
}

img {
    vertical-align: top;
}

a {
    display: block;
    text-decoration: none;
}

body {
    width: 100vw;
    min-height: 100vh;
    overflow: hidden;
    box-sizing: border-box;
    background-image: url("../images/background_pc.png");
    background-size: cover;
    background-color: black;
    background-position: top center;
}

header {
    width: 100vw;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    height: 15vh;
    padding: 2vw 5vw;
    box-sizing: border-box;
    position: relative;
    z-index: 99;
}

header .logo-image {
    height: 5vw;
}

header .contact {
    display: flex;
    flex-direction: row;
    align-items: center;
}

header .contact a {
    margin-right: 3vw;
}

header .contact a:last-child {
    margin-right: 0;
}

header .contact a img {
    height: 2.5vw;
    vertical-align: middle;
}

section {
    width: 100vw;
    height: calc(100vh - 15vh);
    display: flex;
    flex-direction: row;
}

section .banner-container {
    flex: 1;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-end;
}

section .banner-container img {
    height: 45vw;
}

section .title-container {
    flex: 1;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

section .title-container .title-picture {
    width: 35vw;
}

section .title-container .qrcode-container {
    margin-top: 2vw;
    position: relative;
}

section .title-container .qrcode-container .qrcode {
    position: absolute;
    top: 0.7vw;
    left: 1vw;
    z-index: 9;
}

section .title-container .qrcode-container .qrcode img {
    width: 7.5vw;
    height: 7.5vw;
}

section .title-container .qrcode-container .qrcode-bg {
    height: 9vw;
}

footer {
    display: none;
}

.spinner-container {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 999;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -ms-flex-direction: column;
    flex-direction: column;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
    background-color: rgba(0, 0, 0, 0.5);
}

.spinner-container .spinner {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: 9px solid;
    border-color: rgba(0, 0, 0, 0.5);
    border-right-color: #107bfe;
    -webkit-animation: spinner-zp9dbg 1s infinite linear;
    animation: spinner-zp9dbg 1s infinite linear;
}

@-webkit-keyframes spinner-zp9dbg {
    to {
        -webkit-transform: rotate(1turn);
        transform: rotate(1turn);
    }
}

@keyframes spinner-zp9dbg {
    to {
        -webkit-transform: rotate(1turn);
        transform: rotate(1turn);
    }
}

@media screen and (max-width: 600px) {
    body {
        height: 100%;
        overflow-y: scroll;
        padding-bottom: 30vw;
    }

    header {
        width: 100vw;
        padding: 3vw;
        height: unset;
        background-color: rgba(0, 0, 0, 0.3);
    }

    header .logo-image {
        height: 11vw;
    }

    header .contact a {
        margin-right: 3vw;
    }

    header .contact a:last-child {
        margin-right: 0;
    }

    header .contact a img {
        height: 6vw;
        vertical-align: middle;
    }

    section {
        height: auto;
        margin-top: 2vw;
        align-items: center;
        flex-direction: column-reverse;
        justify-content: baseline;
        overflow-y: scroll;
    }

    section .banner-container {
        margin-top: -15vw;
    }

    section .banner-container img {
        width: 100vw;
        height: auto;
        position: relative;
        z-index: 99;
    }

    section .title-container {
        height: unset;
        display: block;
    }

    section .title-container .title-picture {
        width: 90vw;
    }

    section .title-container .qrcode-container {
        display: none;
    }

    footer {
        position: fixed;
        left: 0;
        right: 0;
        bottom: 0;
        display: flex;
        flex-direction: column;
        z-index: 99;
        width: 100vw;
        background-color: rgba(0, 0, 0, 0.5);
    }

    footer .download {
        width: 100vw;
    }

    footer .download img {
        width: 100%;
    }

    footer .platform {
        display: flex;
        flex-direction: row;
        margin: 3vw auto;
    }

    footer .platform a {
        flex: 1;
        text-align: center;
    }

    footer .platform a img {
        width: 90%;
    }

    footer .setup {
        text-align: center;
        padding-bottom: 3vw;
    }

    footer .setup img {
        height: 7vw;
    }
}