.methodology-container {
	max-width: 1000px;
	margin: 0 auto;
}

.methodology-header {
	text-align: center;
	margin-bottom: 3rem;
	padding-bottom: 2rem;
	border-bottom: 3px solid #2a5298;
}

.methodology-header h1 {
	color: #1e3c72;
	font-size: 2.5rem;
	margin-bottom: 1rem;
}

.methodology-header p {
	color: #666;
	font-size: 1.1rem;
	max-width: 800px;
	margin: 0 auto;
}

.section-card {
	background: white;
	border-radius: 12px;
	box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
	padding: 2rem;
	margin-bottom: 2rem;
}

.section-card h2 {
	color: #1e3c72;
	font-size: 1.5rem;
	margin-bottom: 1.5rem;
	padding-bottom: 0.75rem;
	border-bottom: 2px solid #e8f0fe;
	display: flex;
	align-items: center;
	gap: 0.75rem;
}

.section-card h2 .icon {
	width: 32px;
	height: 32px;
	background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
	border-radius: 8px;
	display: flex;
	align-items: center;
	justify-content: center;
}

.section-card h2 .icon svg {
	width: 20px;
	height: 20px;
	fill: white;
}

.section-card h3 {
	color: #2a5298;
	font-size: 1.15rem;
	margin: 1.5rem 0 1rem 0;
}

.section-card p {
	color: #444;
	line-height: 1.8;
	margin-bottom: 1rem;
}

.section-card ul {
	list-style: none;
	padding: 0;
	margin: 1rem 0;
}

.section-card ul li {
	padding: 0.5rem 0 0.5rem 1.5rem;
	position: relative;
	color: #444;
	line-height: 1.6;
}

.section-card ul li::before {
	content: "•";
	color: #2a5298;
	font-weight: bold;
	position: absolute;
	left: 0;
}

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

.reference-list li {
	padding: 1rem;
	margin-bottom: 0.75rem;
	background: #f8f9fa;
	border-radius: 8px;
	border-left: 4px solid #2a5298;
	transition: all 0.2s ease;
}

.reference-list li:hover {
	background: #e8f0fe;
	transform: translateX(4px);
}

.reference-list li::before {
	display: none;
}

.reference-list a {
	color: #2a5298;
	text-decoration: none;
	font-weight: 500;
}

.reference-list a:hover {
	text-decoration: underline;
}

.reference-list .ref-title {
	display: block;
	font-weight: 600;
	color: #1e3c72;
	margin-bottom: 0.25rem;
}

.reference-list .ref-authors {
	color: #666;
	font-size: 0.9rem;
}

.reference-list .ref-source {
	color: #888;
	font-size: 0.85rem;
	font-style: italic;
}

.data-source-grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
	gap: 1.5rem;
	margin-top: 1.5rem;
}

.data-source-item {
	background: linear-gradient(135deg, #f8f9fa 0%, #fff 100%);
	border: 1px solid #e0e0e0;
	border-radius: 10px;
	padding: 1.5rem;
	transition: all 0.3s ease;
}

.data-source-item:hover {
	border-color: #2a5298;
	box-shadow: 0 4px 12px rgba(42, 82, 152, 0.15);
	transform: translateY(-2px);
}

.data-source-item h4 {
	color: #1e3c72;
	margin: 0 0 0.5rem 0;
	font-size: 1.1rem;
}

.data-source-item p {
	color: #666;
	font-size: 0.9rem;
	margin: 0 0 0.75rem 0;
}

.data-source-item a {
	color: #2a5298;
	font-size: 0.9rem;
	text-decoration: none;
	display: inline-flex;
	align-items: center;
	gap: 0.25rem;
}

.data-source-item a:hover {
	text-decoration: underline;
}

.methodology-step {
	display: flex;
	gap: 1.5rem;
	margin-bottom: 1.5rem;
	padding: 1rem;
	background: #f8f9fa;
	border-radius: 8px;
}

.step-number {
	width: 40px;
	height: 40px;
	background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
	color: white;
	border-radius: 50%;
	display: flex;
	align-items: center;
	justify-content: center;
	font-weight: bold;
	font-size: 1.1rem;
	flex-shrink: 0;
}

.step-content h4 {
	color: #1e3c72;
	margin: 0 0 0.5rem 0;
}

.step-content p {
	margin: 0;
	color: #555;
}

.highlight-box {
	background: linear-gradient(135deg, #e8f0fe 0%, #f0f4ff 100%);
	border: 1px solid #c5d5f5;
	border-radius: 10px;
	padding: 1.5rem;
	margin: 1.5rem 0;
}

.highlight-box h4 {
	color: #1e3c72;
	margin: 0 0 0.75rem 0;
	display: flex;
	align-items: center;
	gap: 0.5rem;
}

.highlight-box p {
	margin: 0;
	color: #444;
}

.toc-sidebar {
	position: sticky;
	top: 100px;
	background: white;
	border-radius: 10px;
	padding: 1.5rem;
	box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.toc-sidebar h3 {
	color: #1e3c72;
	font-size: 1rem;
	margin: 0 0 1rem 0;
	padding-bottom: 0.5rem;
	border-bottom: 2px solid #e8f0fe;
}

.toc-sidebar ul {
	list-style: none;
	padding: 0;
	margin: 0;
}

.toc-sidebar ul li {
	margin-bottom: 0.5rem;
}

.toc-sidebar ul li a {
	color: #555;
	text-decoration: none;
	font-size: 0.9rem;
	display: block;
	padding: 0.4rem 0.75rem;
	border-radius: 4px;
	transition: all 0.2s;
}

.toc-sidebar ul li a:hover {
	background: #e8f0fe;
	color: #1e3c72;
}

.content-layout {
	display: grid;
	grid-template-columns: 1fr 250px;
	gap: 2rem;
}

@media (max-width: 992px) {
	.content-layout {
		grid-template-columns: 1fr;
	}
	
	.toc-sidebar {
		display: none;
	}
}