/* 宇宙星空（yuzhou）——场景页样式，仅本页使用，前缀 yuzhou- 防污染 */
html, body { margin: 0; padding: 0; height: 100%; overflow: hidden; }
/* 深空近黑：顶部靛紫、向下沉入纯黑，衬出星河与人影 */
html {
	background: #01020a;
	background: linear-gradient(180deg, #070a1c 0%, #050818 45%, #010208 100%);
}
body {
	font-family: "华文行楷", "STXingkai", "楷体", KaiTi, serif;
}
/* 全屏画布 */
#yuzhoucanvas { position: fixed; left: 0; top: 0; width: 100%; height: 100%; display: block; }
/* 页面标题：行楷，浮于星河之上，不挡交互 */
.yuzhou-hd {
	position: fixed; left: 0; top: 0; width: 100%;
	padding-top: 28px; text-align: center;
	pointer-events: none; z-index: 2;
}
.yuzhou-hd h1 {
	margin: 0; font-size: 26px; font-weight: normal;
	color: #dbe4f6; letter-spacing: 12px;
	text-shadow: 0 0 20px rgba(150, 180, 255, 0.28);
}
/* 场景切换：与其他场景页的「[场景选择]」保持一致 */
.yuzhou-nav {
	position: fixed; top: 26px; right: 24px; z-index: 3;
	font-size: 13px; color: #6b7690; letter-spacing: 2px;
}
.yuzhou-nav a {
	color: #9fabc4; text-decoration: none; margin-left: 12px;
	transition: color 0.3s;
}
.yuzhou-nav a:hover { color: #dde6fa; }
/* 星语：底部居中，缓缓明灭（透明度由 JS 切换，过渡 2.8s） */
.yuzhou-quote {
	position: fixed; left: 0; bottom: 34px; width: 100%;
	text-align: center; z-index: 2; pointer-events: none;
	font-size: 15px; color: #94a3c4; letter-spacing: 4px;
	opacity: 0;
	transition: opacity 2.8s ease;
	text-shadow: 0 0 14px rgba(140, 165, 235, 0.25);
}
.yuzhou-quote-on { opacity: 0.8; }
/* 深度标尺：右下角极淡的坐标感小字，衬托"无边无际" */
.yuzhou-dep {
	position: fixed; right: 24px; bottom: 30px; z-index: 2;
	pointer-events: none; text-align: right;
	font-family: "Courier New", monospace;
	font-size: 10px; letter-spacing: 1px; line-height: 1.5;
	color: #46536e; opacity: 0.75;
	white-space: pre-line;
}