:root {
	--primary-color: #2D3748;
	--secondary-color: #4A5568;
	--accent-color: #4299E1;
	--background-color: #F7FAFC;
	--card-background: #FFFFFF;
	--text-color: #1A202C;
	--border-radius: 8px;
	--spacing-unit: 1rem;
}

* {
	margin: 0;
	padding: 0;
	box-sizing: border-box;
}

body {
	font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
	line-height: 1.6;
	color: var(--text-color);
	background-color: var(--background-color);
}

.container {
	max-width: 1200px;
	margin: 0 auto;
	padding: 2rem var(--spacing-unit);
}

header {
	text-align: center;
	margin-bottom: 3rem;
	padding: 2rem 0;
}

h1 {
	font-size: 2.5rem;
	color: var(--primary-color);
	margin-bottom: 0.5rem;
}

.subtitle {
	font-size: 1.25rem;
	color: var(--secondary-color);
}

section {
	background: var(--card-background);
	border-radius: var(--border-radius);
	padding: 2rem;
	margin-bottom: 2rem;
	box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

h2 {
	color: var(--primary-color);
	margin-bottom: 1.5rem;
	font-size: 1.75rem;
}

h3 {
	color: var(--secondary-color);
	margin: 1.5rem 0 1rem;
	font-size: 1.25rem;
}

.video-container {
	width: 100%;
	aspect-ratio: 16/9;
	background: #EDF2F7;
	border-radius: var(--border-radius);
	overflow: hidden;
	margin-bottom: 1rem;
}

.video-container video {
	width: 100%;
	height: 100%;
	object-fit: cover;
	display: block;
}

.instructions {
	background: #F8FAFC;
	border-radius: var(--border-radius);
	padding: 1.5rem;
}

pre {
	background: #2D3748;
	color: #E2E8F0;
	padding: 1rem;
	border-radius: var(--border-radius);
	overflow-x: auto;
	margin: 1rem 0;
}

code {
	font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
	font-size: 0.9rem;
}

ul {
	list-style-position: inside;
	margin-left: 1rem;
}

li {
	margin-bottom: 0.5rem;
}

footer {
	text-align: center;
	padding: 2rem 0;
	color: var(--secondary-color);
}

a {
	color: var(--accent-color);
	text-decoration: none;
	transition: color 0.2s ease;
}

a:hover {
	color: #2B6CB0;
}

.footer-links {
	margin-top: 2rem;
	padding-top: 1rem;
	border-top: 1px solid #E2E8F0;
}

.footer-links h4 {
	color: var(--primary-color);
	margin-bottom: 1rem;
	font-size: 1.1rem;
}

.footer-links ul {
	list-style: none;
	margin: 0;
	padding: 0;
	display: flex;
	flex-wrap: wrap;
	gap: 1.5rem;
	justify-content: center;
}

.footer-links li {
	margin: 0;
}

.footer-links a {
	color: var(--secondary-color);
	text-decoration: none;
	transition: color 0.2s ease;
	display: inline-flex;
	align-items: center;
	gap: 0.5rem;
}

.footer-links a:hover {
	color: var(--accent-color);
}

@media (max-width: 768px) {
	.container {
		padding: 1rem;
	}

	h1 {
		font-size: 2rem;
	}

	section {
		padding: 1.5rem;
	}

	pre {
		padding: 0.75rem;
	}

	.footer-links ul {
		flex-direction: column;
		align-items: center;
		gap: 1rem;
	}
}

.video-placeholder {
	display: none;
}