.column-section {
    max-width: 900px;
    margin: 0 auto 120px;
}

.header .page-title p {
    font-weight: bold;
}

.column-header {
    margin-bottom: 40px;
}

.breadcrumb ul {
    display: flex;
    list-style: none;
    padding: 0;
    margin: 0;
    gap: 0;
    white-space: nowrap;
    vertical-align: middle;
}

.breadcrumb li a {
    text-decoration: none;
    color: #333;
}

.breadcrumb li:not(:last-child)::after {
    display: inline-block;
    content: ">";
    margin-left: 3px;
    height: 24px;
}

.column-section .section-title {
    font-size: 1.8rem;
    font-weight: 400;
    color: var(--color-text-primary);
    text-align: left;
    margin-bottom: 5px;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.column-date {
    font-size: 18px;
    color: #6F6F6F;
    font-weight: 400;
    white-space: nowrap;
    margin-bottom: 20px;
}

.column-tag {
    background-color: var(--color-brand-gold);
    color: white;
    padding: 2px 8px;
    border-radius: 100vmax;
    font-size: 10px;
    font-weight: bold;
    white-space: nowrap;
}

.title {
    font-size: 16px;
    color: #333;
    font-weight: normal;
    margin: 0;
    flex: 1;
}

.title a {
    text-decoration: none;
}

.title a,
.title a:visited,
.title a:link {
    text-decoration: none;
    color: #000;
}

ul.column-cation {
    list-style: none;
    font-size: 0.8em;
}

ul.column-cation li {
    line-height: 1em;
}

.column-content figure {
    margin: 0 auto;
    text-align: center;
    margin: 20px 0;
}

.column-content .column-content-inner>p {
    padding: 0 40px;
}

.column-content h2.wp-block-heading {
    padding-left: 15px;
    border-left: solid 8px var(--color-primary);
    margin: 20px 0;
}

.column-content h3.wp-block-heading {
    margin: 20px 0;
}

.column-content h3.wp-block-heading::before {
    content: '●';
    /* 丸の文字を指定 */
    color: var(--color-primary);
    margin-right: 8px;
}

.column-content h4.wp-block-heading {
    margin: 20px 0;
    font-weight: bold;
    font-size: 20px;
}

.column-content h4.wp-block-heading::before {
    content: 'ー';
    /* 丸の文字を指定 */
    color: var(--color-primary);
    margin-right: 8px;

}

.column-content .wp-block-table {
    margin: 20px 0;
}

.column-content .wp-block-table thead {
    border-bottom: 3px solid #808080;
}

.column-content .wp-block-table td,
.column-content .wp-block-table th {
    border: none;
    border-bottom: 1px solid #ADADAD;
    padding: .5em;
}

.column-content mark {
    background-color: transparent;
    /* 背景色を透明にする */
    color: inherit;
    /* 文字色を親要素から引き継ぐ */
    padding: 0;
    /* 余計な余白があれば消す */
}

/* TOC
   ========================================================================== */
.toc-box {
    background-color: #f5edd6;
    padding: 28px 36px 28px 28px;
    margin: 20px 48px;
}

.toc-title {
    font-size: 16px;
    font-weight: bold;
    margin: 0 0 16px;
}

.toc-list,
.toc-list ul {
    list-style: disc;
    margin: 0;
    padding: 0 0 0 1.5em;
}

.toc-list ul {
    margin-top: 4px;
}

.toc-list li {
    margin-bottom: 6px;
    line-height: 1.6;
}

.toc-list li:last-child {
    margin-bottom: 0;
}

.toc-list a {
    color: #333;
    text-decoration: underline;
    font-size: 14px;
}

.toc-list a:hover {
    opacity: 0.7;
}

@media (max-width: 768px) {
    .toc-box {
        padding: 20px;
    }
}

/* CARD GRID
   ========================================================================== */
.column-card-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 48px 32px;
    margin-top: 40px;
}

.column-card {
    display: block;
    text-decoration: none;
    color: inherit;
}

.column-card__thumb {
    aspect-ratio: 3 / 2;
    overflow: hidden;
    background: #d9d9d9;
    margin-bottom: 16px;
}

.column-card__thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.column-card__title {
    font-size: 15px;
    font-weight: bold;
    line-height: 1.6;
    margin: 0 0 10px;
}

.column-card__excerpt {
    font-size: 13px;
    color: #555;
    line-height: 1.7;
    margin: 0;
}

/* RESPONSIVE
   ========================================================================== */
@media (max-width: 768px) {
    .column-section {
        margin: 0 24px;
    }

    .column-section .section-title {
        font-size: 1.2rem;
        margin-bottom: 20px;
        text-align: left;
        max-width: 100%;
    }

    .column-card-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
}