@import url('https://fonts.googleapis.com/css2?family=Kosugi+Maru&display=swap');

:root {
    /* 色彩定義 */
    --black: #090909;
    --dark-gray: #333333;
    --white: #FDFDFD;
    --pink: #ebdce2;
    --mazen: #d946a6;
    --blue: #007bff;
}


/* 共通要素 */
body {
    background-color: var(--white);
    color: var(--black);
    font-family: "Kosugi Maru", sans-serif;
    margin: 0;
}
section {
    margin: 0; padding: 10px;
}
p {
    line-height: 1.2em;
}
a {
    color: var(--blue);
    text-underline-offset: 2px;
}

.no-margin-top {
    margin-top: 0;
}
.no-margin-bottom {
    margin-bottom: 0;
}

.dark-theme {
    background-color: var(--dark-gray);
    color: var(--pink);
}
.dark-theme a {
    color: var(--mazen);
}

.no-dot {
    list-style: none;
    padding-left: 0;
}

a.conceal { /* リンクっぽく見せない箇所へ */
    color: inherit;
    text-decoration: none;
}

header.page-header {
    width: 100%;
    background-color: var(--white);
    display: flex;
    align-items: center;
    box-sizing: border-box;
}

header.page-header a.logo-link {
    display: inline-block;
    vertical-align: middle;
    border-radius: 100%;
    margin: 20px;
}
header.page-header img {
    height: 100px;
    border-radius: 100%;
}

header.page-header nav.common-nav {
    
}
header.page-header nav.common-nav ul {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
}
header.page-header nav.common-nav ul li {
    padding: 0 10px;
    margin: 10px 10px;
}
header.page-header nav.common-nav ul li a {
    color: inherit;
    font-weight: bold;
    white-space: nowrap;
}

main {
    margin: auto;
}
main > * {
    padding: 15px 20%;
}

footer.page-footer {
    padding-left: 10px;
}

li, dt {
    margin: 5px;
}

img {
    object-fit: contain;
}
img.large {
    max-height: inherit;
    max-width: 100%;
}