.master-class-content {
	font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
	line-height: 1.6;
	color: #333;
	max-width: 1200px;
	margin: 0 auto;
	padding: 0 20px;
}

.master-class-content h2 {
	color: #2a7d8c;
	margin-top: 40px;
	font-size: 28px;
	border-bottom: 2px solid #eaeaea;
	padding-bottom: 10px;
}

.master-class-content h3 {
	color: #3a8c7d;
	margin-top: 30px;
	font-size: 22px;
}

.master-class-content h4 {
	color: #4a6b8c;
	margin-top: 25px;
	font-size: 20px;
}

.master-class-content p {
	margin-bottom: 20px;
	font-size: 16px;
}

.master-class-content ul, .master-class-content ol {
	margin-bottom: 20px;
	padding-left: 25px;
}

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

.master-class-content a {
	color: #2a7d8c;
	text-decoration: none;
	border-bottom: 1px dotted #2a7d8c;
	transition: all .3s ease;
}

.master-class-content a:hover {
	color: #3a8c7d;
	border-bottom: 1px solid #3a8c7d;
}

.master-class-content .toc-container {
	background: linear-gradient(to right, #f8f9fa, #e9ecef);
	border-radius: 8px;
	padding: 25px;
	margin: 30px 0;
	box-shadow: 0 4px 6px rgba(0, 0, 0, .05);
}

.master-class-content .toc-title {
	font-size: 22px;
	color: #2a7d8c;
	margin-bottom: 15px;
	text-align: center;
}

.master-class-content .toc-list {
	list-style-type: none;
	padding-left: 0;
}

.master-class-content .toc-list li {
	margin-bottom: 12px;
	padding: 8px 15px;
	background: rgba(255, 255, 255, .7);
	border-radius: 6px;
	transition: all .3s ease;
}

.master-class-content .toc-list li:hover {
	background: rgba(255, 255, 255, .9);
	transform: translateX(5px);
}

.master-class-content .toc-list a {
	display: block;
	color: #3a8c7d;
	text-decoration: none;
	border-bottom: none;
	font-weight: 500;
}

.master-class-content .toc-list a:hover {
	color: #2a7d8c;
}

.master-class-content .toc-list .toc-sublist {
	list-style-type: none;
	padding-left: 20px;
	margin-top: 10px;
}

.master-class-content .toc-list .toc-sublist li {
	background: rgba(255, 255, 255, .5);
	margin-bottom: 8px;
}

.master-class-content .tip-box {
	background-color: #e8f4f8;
	border-left: 4px solid #2a7d8c;
	padding: 15px 20px;
	margin: 25px 0;
	border-radius: 0 6px 6px 0;
}

.master-class-content .warning-box {
	background-color: #fff3e0;
	border-left: 4px solid #ff9800;
	padding: 15px 20px;
	margin: 25px 0;
	border-radius: 0 6px 6px 0;
}

.master-class-content .highlight {
	background-color: #ffc;
	padding: 2px 4px;
	border-radius: 3px;
}

.master-class-content table {
	width: 100%;
	border-collapse: collapse;
	margin: 25px 0;
}

.master-class-content table th {
	background-color: #2a7d8c;
	color: white;
	text-align: left;
	padding: 12px 15px;
}

.master-class-content table td {
	border: 1px solid #ddd;
	padding: 12px 15px;
}

.master-class-content table tr:nth-child(even) {
	background-color: #f8f9fa;
}

.master-class-content .conclusion {
	background-color: #f0f7f4;
	padding: 20px;
	border-radius: 8px;
	margin: 30px 0;
	border: 1px solid #d0e7dd;
}