@charset "UTF-8";
/*全体設定ここから*/
* {
    padding: 0;
    margin: 0;
    box-sizing: border-box;
    font-size: 100%;
    letter-spacing: 0.05em;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.html {
    color: #333;
    line-height: 2;
    font-family: 'BIZ UDPGothic', sans-serif;
}

.main {
    padding: 1rem;
    /* TextButton用カウンター */
    counter-reset: number 0;
}

img {
    max-width: 100%;
}

/* ヘッダー設定 */
.header {
    width: 100%;
    padding: 1rem;
    color: white;
    background-color: rgba(70, 125, 250, 0.8);
    /* PCではタイトルのサイズが1.25倍 */
    font-size: 1.25rem;
    font-weight: bold;
    display: flex;
    align-items: center;
}

.header-left-container {
    display: flex;
    align-items: center;
    gap: 2em;
}

@media (max-width: 670px) {
    .header-left-container {
        gap: 1em;
    }
}

header a {
    text-decoration: none;
    display: block;
    cursor: pointer;
    width: 2em;
    line-height: 2em;
    text-align: center;
    color: #467dfa;
    background-color: white;
    border-radius: 4px;
    cursor: pointer;
    box-shadow: 0 3px 7px rgba(0,0,0,0.5);
}

/*パンくずリスト*/
.breadcrumb {
    margin-bottom: 1rem;
    list-style: none;
}

.breadcrumb li {
    display: inline;/*横に並ぶように*/
    list-style: none;
    font-weight: bold;/*太字*/
}

.breadcrumb li::before {
    content: none;
}

.breadcrumb li::after {/* >を表示*/
    content: '>';
    /*padding: 0 0.2em;*/
    color: #555;
}

.breadcrumb li:last-child:after {
    content: '';
}

.breadcrumb li a {
    text-decoration: none;
    color: #3363CC;/*色*/
}

.breadcrumb li a:hover {
    text-decoration: underline;
}

.breadcrumb span {
    color: #3363CC;
}

.comment {
    margin: 0.5em 0;
}
/*ここまで*/

.TextButton {
    padding: 1em;
    box-shadow: 0 0px 7px rgba(0,0,0,0.2);
    margin: 7px 0;
    border-radius: 3px;
    display: block;
    text-decoration: none;
}

.TextButton_theme_article::before {
    counter-increment: number 1;
    content: "第"counter(number)"回 ";
}

.TextButton_theme_chapter::before {
    counter-increment: number 1;
    content: "第"counter(number)"章 ";
}

.thumbnails-container {
    margin-top: 1rem;
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem 1rem;
}

.thumbnail-container {
    width: calc((100% - 3rem)/4);
}

.thumbnail-container_theme_cover {
    width: calc(12.5% - 0.875em);
}

.box-shadow {
    box-shadow: 0 0px 7px rgba(0,0,0,0.2);
}

.thumbnail-link {
    text-decoration: none;
    color: #333;
    display: block;
}

.title-container {
    margin: 0.5em 0;
    display: flex;
    gap: 0.5rem;
}

.check {
    height: 1.5rem;
}

.p {
    line-height: 1.5;
}

/* 章の記事全読破のall-check-containerクラス */
.all-check-container {
    width: fit-content;
    padding: 0.5em;
    margin: 1.5rem 0;
    border-bottom: 2px solid #3363CC;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.check-all {
    height: 2rem;
}



@media (max-width: 1000px) {
    .thumbnail-container {
        width: calc((100% - 1rem)/2);
    }

    .thumbnail-container_theme_cover {
        width: calc(20% - 0.8em);
    }
}

@media (max-width: 600px) {
    .thumbnail-container {
        width: 100%;
    }

    .thumbnail-container_theme_cover {
        width: calc(33% - 0.66em);
    }
}