#digital-book-link {
	width: 100%;
	margin: 20px 0;
	border-collapse: collapse;
	font-family: Arial, sans-serif;
}

#digital-book-link td {
	vertical-align: top;
	border: 1px solid #ddd;
	padding: 10px;
}

.image-cell {
	width: 30%;
}

.image-cell img {
	max-width: 100%;
	height: auto;
	border: 1px solid #ddd;
}

.publication-date {
	margin-top: 10px;
	font-weight: bold;
	color: #666;
	font-size: 0.9em;
}

.content-cell h4 {
	color: #1f459b;
	margin-top: 0;
	margin-bottom: 10px;
}

.content-cell p {
	margin-bottom: 10px;
	line-height: 1.5;
}

.content-cell ul {
	list-style-type: none;
	padding: 0;
}

.content-cell li {
	margin-bottom: 10px;
}

.pdf-link,
.emanual-link {
	display: inline-block;
	padding: 5px 10px;
	background-color: #1f459b;
	color: white;
	text-decoration: none;
	border-radius: 3px;
	font-size: 0.9em;
	transition: all 0.3s;
}

.pdf-link:hover,
.emanual-link:hover {
	background-color: #0a2d6e;
	/* より暗い青色 */
	color: #ffffff;
	box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
	transform: translateY(-2px);
}

.doc-info {
	font-size: 0.9em;
	color: #666;
	margin-left: 5px;
}

@media (max-width: 600px) {
	#digital-book-link td {
		display: block;
		width: 100%;
	}

	.image-cell {
		width: 100%;
		text-align: center;
	}

	.image-cell img {
		max-width: 200px;
	}

	.content-cell {
		padding-top: 20px;
	}
}