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

body {
	font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
	background: #0d1117;
	color: #e6edf3;
	line-height: 1.6;
}

header {
	background: rgba(13,17,23,0.9);
	backdrop-filter: blur(10px);
	border-bottom: 2px solid #222;
	padding: 1em 0;
	position: sticky;
	top: 0;
	z-index: 100;
}

main {
	max-width: 900px;
	margin: auto;
	padding: 2em 1em;
}

footer {
	border-top: 2px solid #222;
	text-align: center;
	padding: 2em;
	color: #777;
}