/* 目次 */
.blog-index {
    width: 75%;
    max-width: 800px;
    margin: 0 auto 5em;
    padding: 2em;
    border: 3px solid var(--color-01);
    background-color: white;
}

.blog-index .blog-index-title {
    width: -webkit-fit-content;
    width: -moz-fit-content;
    width: fit-content;
    max-width: 90%;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    align-items: center;
    -ms-flex-align: center;
    margin: 1em auto 1.5em;
    font-size: 1.5em;
    line-height: 1.3;
    letter-spacing: 1.5;
}

.blog-index .blog-index-title .icon-index {
    width: 1em;
    height: 1em;
    -ms-flex-negative: 0;
    flex-shrink: 0;
    margin-right: 0.5em;
}

.blog-index .blog-index-title .icon-index img {
    width: 100%;
    height: 100%;
    -o-object-fit: contain;
    object-fit: contain;
    -o-object-position: center center;
    object-position: center center;
}

.blog-index .blog-index-list {
    width: 100%;
    max-width: 100%;
    margin: 1em auto;
}

.blog-index .blog-index-list li {
    padding-left: 1.5em;
    position: relative;
}

.blog-index .blog-index-list li::before {
    content: "";
    width: 0.5em;
    height: 0.5em;
    display: inline-block;
    border-radius: 100%;
    background-color: var(--color-01);
    position: absolute;
    top: 0.55em;
    left: 0.5em;
}

.blog-index .blog-index-list li+li {
    margin-top: 0.5em;
}

.blog-index .blog-index-list li:not(:has(a:not(:empty))) {
    display: none;
}

.blog-index .blog-index-list li a:hover {
    text-decoration: underline;
}

@media (max-width: 599px) {
    .blog-index {
        width: 90%;
        padding: 1.5em 1em;
        border: 2px solid var(--color-01);
    }

    .blog-index .blog-index-list {
        margin: 0.5em auto;
    }
}

/* 記事セクション */
.blog-section {
    width: 90%;
    max-width: 1400px;
    margin-left: auto;
    margin-right: auto;
    padding: 2em 1em;
    background-color: white;
}

.blog-section+.blog-section {
    margin-top: 5em;
}

.blog-section .blog-section-title {
    margin-bottom: 1em;
    padding-left: 0.5em;
    font-weight: bold;
    font-size: 1.75em;
    line-height: 1.3;
    position: relative;
}

.blog-section .blog-section-title::before {
    content: "";
    width: 0.25em;
    height: 100%;
    display: inline-block;
    background-color: var(--color-01);
    position: absolute;
    top: 0;
    left: 0;
}

.blog-section:not(:has(.blog-section-title:not(:empty))) {
    display: none;
}

@media (max-width: 599px) {
    .blog-section {
        width: 100%;
        padding: 1em 0.5em;
    }
}

/* ボタン */
.btn-01 {
    width: -webkit-fit-content;
    width: -moz-fit-content;
    width: fit-content;
    margin: 5em auto;
}

.btn-01 a {
    width: -webkit-fit-content;
    width: -moz-fit-content;
    width: fit-content;
    display: block;
    overflow: hidden;
    padding: 0.75em 5em;
    color: white;
    text-align: center;
    border: 2px solid var(--color-02);
    border-radius: 3em;
    background-color: var(--color-02);
}

.btn-01 a:hover {
    color: var(--color-02);
    background-color: white;
}