@charset "UTF-8";
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;700&family=Noto+Sans+JP:wght@400;700&display=swap');

body{
    font-family: 'Inter','Noto Sans JP';
    color: #222;
    background-color: #F5F5F7;
}

/* PC */

h1{
    margin: 0;
    font-size: 36px;
    margin-bottom: 20px;
    line-height: 1;
}

h2{
    margin: 0 auto;
    font-size: 32px;
    line-height: 1.5;
    width: 90.6%;
}

h3{
    margin: 0 auto;
    font-size: 22px;
    line-height: 1.5;
    margin-top: 20px;
    width: 90.6%;
}

p{
    margin: 0;
}

header{
    position: relative;
    width: 100%;
    height: 260px;
    max-height: 380px;
    background-image: url(../images/header.jpg);
    background-size: cover;
}

.header-text{
    color: #fff;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    width: 100%;
}

.header-text p{
    font-size: 16px;
    line-height: 2;
}

.header-text p:nth-child(3){
    margin-top: 8px;
}

.how-to{
    text-align: center;
    background-color: #fff;
    padding: 40px 0;
    border-radius: 20px;
    box-shadow: 0px 0px 10px -2px rgba(0, 0, 0, 0.25);
    grid-column-start: 1;
    grid-column-end: 3;
}

.how-to img{
    width: 90.6%;
    margin-top: 50px;
}

.how-to p{
    width: 90.6%;
    margin: 20px auto 0;
    line-height: 1.5;
}

.container{
    display: grid;
    margin: 80px auto;
    column-gap: 40px;
    row-gap: 40px;
    width: 69.444444%;
    max-width: 1000px;
}

.webbrowser{
    background-color: #fff;
    text-align: center;
    padding: 40px 0;
    box-shadow: 0px 0px 10px -2px rgba(0, 0, 0, 0.25);
    border-radius: 20px;
    grid-column-start: 1;
    grid-column-end: auto;
}

.webbrowser img{
    margin-top: 30px;
}

.webbrowser p{
    margin-top: 30px;
    font-size: 22px;
}

.OS{
    background-color: #fff;
    text-align: center;
    padding: 40px 0;
    box-shadow: 0px 0px 10px -2px rgba(0, 0, 0, 0.25);
    border-radius: 20px;
    grid-column-start: 2;
    grid-column-end: auto;
}

.OS img{
    margin-top: 30px;
}

.OS p{
    margin-top: 30px;
    font-size: 22px;
}

.square{
    width: 100px;
}

.rectangle{
    width: 300px;
}

footer{
    background-color: #fff;
    padding: 10px 0;
    text-align: center;

}

small{
    font-size: 12px;
    color: #D4D4D4;
}

/* javascript */

.on{
    display: block;
}

.off{
    display: none;
}

/* SP */

@media screen and (max-width: 768px) {
    header{
        position: relative;
        width: 100%;
        height: 260px;
        max-height: 380px;
        background-image: url(../images/header-SP.jpg);
        background-size: cover;
    }

    .header-text{
        width: 91.466667%;
        max-width: 412px;
        margin: 0 auto;
    }

    .header-text p{
        font-size: 12px;
        text-align-last: left;
    }

    h1{
        font-size: 31px;
    }

    h2{
        font-size: 24px;
    }

    h3{
        font-size: 20px;
        text-align-last: left;
        width: 100%;
    }

    .container{
        margin: 60px 16px;
        column-gap: 0;
        width: inherit;
    }

    .how-to{
        width: 100%;
        grid-column-end: 1;
        padding: 40px 16px;
    }

    .how-to img{
        width: 100%;
        margin-top: 4z0px;
    }

    .how-to p{
        width: 100%;
        text-align-last: left;
        font-size: 14px;
    }

    .webbrowser p{
        font-size: 20px;
    }

    .OS{
        grid-column-start: 1;
    }

    .OS p{
        font-size: 20px;
    }

    small{
        font-size: 8px;
    }
    }