/* Cocoon-like Style for News Articles */
body {
    font-family: "Noto Sans JP", sans-serif;
    color: #333;
    background-color: #f4f5f7;
    margin: 0;
    padding: 0;
    line-height: 1.8;
}

a {
    color: #0097B2;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.header {
    background-color: #0097B2; /* Key Color */
    color: #fff;
    padding: 15px 0;
    text-align: center;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.site-title {
    font-size: 24px;
    font-weight: bold;
}

.container {
    max-width: 1024px;
    margin: 30px auto;
    background: #fff;
    padding: 40px;
    border-radius: 5px;
    box-shadow: 0 0 10px rgba(0,0,0,0.05);
}

/* Article Title */
.entry-title {
    font-size: 28px;
    font-weight: bold;
    margin-bottom: 10px;
    padding-bottom: 15px;
    border-bottom: 3px solid #0097B2;
    line-height: 1.4;
}

.post-date {
    display: block;
    text-align: right;
    color: #999;
    font-size: 14px;
    margin-bottom: 30px;
}

/* Headings */
.entry-content h2 {
    background: #f3f4f5;
    padding: 15px 20px;
    border-left: 6px solid #0097B2;
    font-size: 22px;
    font-weight: bold;
    margin-top: 40px;
    margin-bottom: 20px;
}

.entry-content h3 {
    border-bottom: 3px solid #ddd;
    padding-bottom: 8px;
    font-size: 20px;
    font-weight: bold;
    margin-top: 35px;
    margin-bottom: 15px;
}

.entry-content h4 {
    border-left: 4px solid #0097B2;
    padding-left: 10px;
    font-size: 18px;
    margin-top: 25px;
    margin-bottom: 15px;
}

/* TOC */
.toc {
    background: #f9f9f9;
    border: 1px solid #e5e5e5;
    padding: 20px;
    margin: 30px 0;
    border-radius: 4px;
    display: inline-block;
    min-width: 300px;
}

.toc-title {
    text-align: center;
    font-weight: bold;
    margin-bottom: 10px;
}

.toc-list {
    margin: 0;
    padding-left: 20px;
}

.toc-list li {
    margin-bottom: 5px;
}

/* Decorations */
.bold {
    font-weight: bold;
}

.marker-yellow {
    background: linear-gradient(transparent 60%, #ffff66 60%);
}

.blog-card {
    border: 1px solid #ddd;
    border-radius: 5px;
    padding: 15px;
    margin: 20px 0;
    display: flex;
    align-items: center;
    transition: background 0.2s;
}

.blog-card:hover {
    background: #f9f9f9;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.blog-card img {
    width: 120px;
    height: 90px;
    object-fit: cover;
    margin-right: 20px;
    border-radius: 4px;
}

.blog-card-content {
    flex: 1;
}

.blog-card-title {
    font-weight: bold;
    display: block;
    margin-bottom: 5px;
}

.blog-card-snippet {
    font-size: 12px;
    color: #666;
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 20px;
        margin: 10px;
    }
    .entry-title {
        font-size: 22px;
    }
}