:root {
    color-scheme: light dark;
}

body {
    margin: 0;
    background-color: #423930;
    color: #b4ada9;
    font-size: 16px;

    /* ★フォント適用（custom/preset/google 全対応） */
    font-family: "Hiragino Kaku Gothic ProN", "Meiryo", "Yu Gothic";
}

body {
    background-color: light-dark(#423930, #423930);
    color: light-dark(#b4ada9, #b4ada9);
}

form input,
form textarea,
form select,
form button {
    color-scheme: light;

    /* ★フォーム類も同じフォントに */
    font-family: inherit;
}

a {
    color: #a99e93;
    color: light-dark(
        #a99e93,
        #a99e93    );
}
a:visited {
    color: #a99e93;
    color: light-dark(
        #a99e93,
        #a99e93    );
}
a:active {
    color: #9f6f55;
    color: light-dark(
        #9f6f55,
        #9f6f55    );
}

.quote-text {
    color: #92b5a9;
    color: light-dark(
        #92b5a9,
        #92b5a9    );
}

.comment-text {
    color: #cbb994;
    color: light-dark(
        #cbb994,
        #cbb994    );
}

.note-text {
    color: #b08bff;
    color: light-dark(
        #b08bff,
        #b08bff    );
}

.name {
    color: #a58f86;
    color: light-dark(
        #a58f86,
        #a58f86    );
}

.cap {
    color: #a58f86;
    color: light-dark(
        #a58f86,
        #a58f86    );
}

.deleted-message {
    color: #cbb994;
    color: light-dark(
        #cbb994,
        #cbb994    );
}

.error-message {
    color: #ff5555;
    color: light-dark(
        #ff5555,
        #ff5555    );
}

hr {
    border: none;
    border-top: 1px solid #b3ada0;
    border-top-color: light-dark(
        #b3ada0,
        #b3ada0    );
}

.embed-post {
    background-color: #423930;
    color: #b4ada9;
    background-color: light-dark(
        #423930,
        #423930    );
    color: light-dark(
        #b4ada9,
        #b4ada9    );
}

mark {
    background-color: transparent;
    color: inherit;
    margin: 0 5px;
}

/* パンくずリスト */
.breadcrumb {
    display: flex;
    flex-wrap: wrap;
    margin-bottom: 1rem;
    list-style: none;
    padding-left: 0;
}

.breadcrumb-item {
    display: flex;
    align-items: center;
}

.breadcrumb-item + .breadcrumb-item::before {
    display: inline-block;
    padding: 0 0.5rem;
    content: ">";
    vertical-align: middle;

    color: #b4ada9;
    color: light-dark(
        #b4ada9,
        #b4ada9    );
}

/* 最後のパンくずリスト項目のリンクを無効にする */
.breadcrumb-item:last-child a {
    pointer-events: none;
    color: inherit;
    text-decoration: none;
}

/* スマートフォン用スタイル */
@media (max-width: 640px) {
    .embed-contents {
        position: relative;
        width: 100%;
        max-height: 200px;
        overflow: hidden;
    }
    .embed-instagram {
        width: 100%;
        height: 360px !important;
        max-height: 360px !important;
    }

    .embed-video iframe {
        width: 100%;
        height: 360px !important;
        max-height: 360px !important;
    }

    .embed-youtube iframe {
        width: 100%;
        height: 360px !important;
        max-height: 360px !important;
    }

    .embed-youtube {
        width: 100%;
        height: 360px !important;
        max-height: 360px !important;
    }

    .img-thumbnail, .embed-youtube-img, .embed-image, .video-thumbnail {
        max-width: 128px;
        max-height: auto;
    }
}

/* パソコン用スタイル */
@media (min-width: 641px) {
    .embed-contents {
        position: relative;
        width: 100%;
        max-height: 350px;
        overflow: hidden;
    }

    .embed-instagram {
        width: 600px;
        height: 360px !important;
        max-height: 360px !important;
    }

    .embed-video iframe {
        width: 600px;
        height: 360px !important;
        max-height: 360px !important;
    }

    .embed-youtube iframe {
        width: 600px;
        height: 360px !important;
        max-height: 360px !important;
    }

    .img-thumbnail, .embed-youtube-img, .embed-image, .video-thumbnail {
        max-width: 128px;
        max-height: auto;
        cursor: pointer;
    }
}

img.emoji {
    height: 1em;
    width: 1em;
    margin: 0 .05em 0 .1em;
    vertical-align: -0.1em;
}

img {
    max-height: 512px;
}

<style type="text/css">
<!--
body, table, td {
  line-height: 140%;
  font-size: 15px;
  letter-spacing: 1px;
  font-family:
    "Hiragino Kaku Gothic ProN",
    "Meiryo",
    "Yu Gothic",
    -apple-system,
    BlinkMacSystemFont,
    sans-serif;
}

body {
  padding: 0 8px;
}
-->
</style>