/* base style */
html {
    font-family: "Noto Sans JP", sans-serif;
    /* 1920pxの時に15px */
    font-size: 20px;
}
.sp {
    display: none;
}
body {
    width: 100%;
}
main {
    width: 100%;
    max-width: 1500px;
    margin: 0 auto;
    box-sizing: border-box;
    padding: 10rem 5rem 5rem;
}
section {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
}
h2 {
    font-size: 3rem;
    font-style: italic;
    font-weight: 600;
    box-sizing: border-box;
    padding-bottom: 2rem;
    border-bottom: 2px solid #000;
}
img {
    width: 100%;
}
/* header style */
header {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    position: fixed;
    top: 0;
    left: 0;
    background: rgba(255,255,255,.8);
    box-sizing: border-box;
    padding: 2rem 0;
    box-shadow: 3px 3px 6px rgba(0,0,0,.1);
    a {
        font-size: 2rem;
        font-style: italic;
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    a img {
        width: 25%;
    }
}

/* main style */
#About table {
    width: 100%;
    margin-top: 5rem;
}
table tr {
    border-bottom: 1px solid #e3e3e3;
}
table th,
table td {
    font-size: 0.8rem;
    line-height: 1.5;
    box-sizing: border-box;
    padding: 1.5rem 0;
}
table th {
    width: 25%;
}
table td {
    width: 75%;
}
table tr:last-child td {
    text-decoration: underline;
}
a {
    transition: all .3s;
}
a:hover {
    color: red;
}
.last_text {
    align-self: flex-end;
    margin-top: 1rem;
    font-size: 0.8rem;
}
/* .back_btn {
    width: 30%;
    height: 3rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border: 1px solid #000;
    border-radius: 2rem;
    margin-top: 5rem;
    font-size: 1rem;
    transition: all .3s;
}
.back_btn:hover {
    background-color: #000;
    color: #fff;
} */
/* cta style */
.cta {
    position: fixed;
    bottom: 5rem;
    left: 1rem;
}
.cta a {
    font-size: 1rem;
    writing-mode: vertical-rl;
    position: relative;
    color: #cebb52;
}
.cta a::before,
.cta a::after {
    content: "▲";
    position: absolute;
    font-size: 0.8em;
    color: #cebb52;
}
.cta a::before {
    left: 0;
    bottom: -2rem;
}
.cta a::after {
    left: 0;
    bottom: -3rem;
}
/* スマホ */
@media (max-width: 768px) {
    /* base style */
    html {
        /* 768pxの時に15px */
        font-size: 1.95vw;
    }
    main {
        max-width: 750px;
        padding: 20rem 3rem 5rem;
    }
    h2 {
        font-size: 4rem;
        padding-bottom: 1.5rem;
        border-bottom: 1px solid #000;
    }
    /* header style */
    header {
        a {
            font-size: 3.5rem;
        }
        a img {
            margin-bottom: 1rem;
        }
    }

    /* main style */
    #About table {
        margin-top: 4rem;
    }
    table th,
    table td {
        font-size: 1.5rem;
        line-height: 1.5;
        box-sizing: border-box;
        padding: 1.5rem 0;
    }
    table th {
        width: 25%;
    }
    table td {
        width: 75%;
    }
    .last_text {
        align-self: flex-end;
        margin-top: 1rem;
        font-size: 1.5rem;
    }
    /* .back_btn {
        width: 80%;
        height: 5rem;
        border-radius: 3rem;
        margin-top: 10rem;
        font-size: 1.5rem;
    }
    .back_btn:hover {
        background-color: #fff;
        color: #000;
    } */
     /* cta style */
    .cta {
        bottom: 5rem;
        left: 1rem;
    }
    .cta a {
        font-size: 1rem;
    }
    .cta a::before,
    .cta a::after {
        font-size: 1rem;
    }
}