/* Mục lục bài viết (Table of Contents) */
.vdc-toc {
	margin: 0 0 24px;
	padding: 16px 20px;
	background-color: #f8f9fa;
	border: 1px solid #e0e0e0;
	border-radius: 6px;
}

.vdc-toc__title {
	margin: 0 0 12px;
	font-size: 18px;
	font-weight: 600;
	line-height: 1.4;
	color: #222;
}

.vdc-toc__list {
	list-style: none;
	margin: 0;
	padding: 0;
}

.vdc-toc__item {
	margin: 0 0 6px;
	padding: 0;
	line-height: 1.5;
}

.vdc-toc__item:last-child {
	margin-bottom: 0;
}

/* H2 - cấp 1 */
.vdc-toc__item--h2 {
	padding-left: 0;
	font-weight: 600;
}

/* H3 - cấp 2 */
.vdc-toc__item--h3 {
	padding-left: 16px;
	font-weight: 500;
	font-size: 0.95em;
}

/* H4 - cấp 3 */
.vdc-toc__item--h4 {
	padding-left: 32px;
	font-weight: 400;
	font-size: 0.9em;
}

.vdc-toc__link {
	display: inline-block;
	color: #555;
	text-decoration: none;
	transition: color 0.2s;
}

.vdc-toc__link:hover {
	color: #0066cc;
}

/* Smooth scroll */
html {
	scroll-behavior: smooth;
}

.vdc-toc__empty {
	margin: 0;
	font-size: 14px;
	color: #888;
}