html, body {
	margin: 0;
	padding: 0;
	width: 100%;
	height: 100%;
	overflow: hidden;
	background: #000000;
	touch-action: none;
}

body {
	position: fixed;
	inset: 0;
}

canvas {
	display: block;
	width: 100vw;
	height: 100vh;        /* fallback for older browsers */
	height: 100dvh;       /* dynamic viewport — URL 바 표시/숨김에 따라 자동 조정 */
	max-width: none;
	margin: 0 auto;
}