/* common */
:root {
    --main-col: #B90B0B;
}
body {
    font-family: "Helvetica Neue",
                  Arial,
                  "Hiragino Kaku Gothic ProN",
                  "Hiragino Sans",
                  "BIZ UDPGothic",
                  Meiryo,
                  sans-serif;
}

/* utility */
.text-center {
    text-align: center;
}
.mb {
    display: none;
}

/* header */
header {
    position: absolute;
    top: 0;
    left: 0;
    background-color: var(--main-col);
    width: 100%;
    height: 100vh;
    border-bottom-right-radius: 8px;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: all .2s ease-out;
    z-index: 100;
}
header img {
    width: 123px;
    height: 69px;
}
header.shrunk {
    width: 183px;
    height: 129px;
}

/* main */
main {
    padding: 130px 0 50px;
    display: none;
}
h2 {
    text-align: center;
    font-size: 36px;
    color: var(--main-col);
    text-align: center;
    font-family: 'Oswald', sans-serif;
    margin-bottom: 40px;
}
h2 span {
    margin-left: 1em;
    font-size: 12px;
    vertical-align: 7px;
    font-family: "Helvetica Neue",
                  Arial,
                  "Hiragino Kaku Gothic ProN",
                  "Hiragino Sans",
                  "BIZ UDPGothic",
                  Meiryo,
                  sans-serif;
    color: #ffffff;
    background-color: var(--main-col);
    padding: 4px 6px;
    border-bottom-right-radius: 6px;
}
h3 {
    color: var(--main-col);
    font-size: 24px;
    text-align: center;
    margin-bottom: 24px;
}
.outer-section {
    margin-bottom: 100px;
}
.inner-section {
    border: 1px solid var(--main-col);
    margin: 0 auto 50px;
    width: 800px;
}
.description {
    padding: 40px 20px;
}
p {
    display: inline-block;
    font-size: 15px;
    margin-bottom: 1em;
    text-align: left;
}
ul {
    display: inline-block;
    text-align: left;
    margin-top: 24px;
    padding: 15px;
    background-color: #f7f7f7;
}
li:not(:last-child) {
    margin-bottom: .5em;
}
li span {
    margin-right: 1em;
    font-size: 12px;
    font-family: "Helvetica Neue",
                  Arial,
                  "Hiragino Kaku Gothic ProN",
                  "Hiragino Sans",
                  "BIZ UDPGothic",
                  Meiryo,
                  sans-serif;
    color: #ffffff;
    background-color: var(--main-col);
    padding: 3px 6px;
    border-bottom-right-radius: 6px;
}
li a {
    color: var(--main-col);
}
li a:hover {
    opacity: .7;
}

/* footer */
footer {
    text-align: center;
    color: var(--main-col);
    line-height: 50px;
    font-size: 14px;
    font-weight: bold;
}

/* for mobile devices */
@media screen and (max-width: 768px) {
    main {
        padding-top: 190px;
    }
    .about-text {
        padding: 0 15px;
    }
    h2 {
        font-size: 26px;
    }
    h2 span {
        font-size: 12px;
        margin-left: 1em;
        vertical-align: 3px;
    }
    h3 {
        font-size: 18px;
    }
    p {
        font-size: 13px;
    }
    header.shrunk {
        width: 122px;
        height: 86px;
    }
    header.shrunk img {
        width: 82px;
        height: 46px;
    }
    .outer-section {
        padding: 0 14px;
    }
    .inner-section {
        width: 100%;
    }
    .mb {
        display: block;
    }
    li a {
        font-size: 14px;
        display: block;
        word-break: break-all;
    }
}