* {
	box-sizing: border-box;
	margin: 0;
	padding: 0;
}
body {
	display: flex;
	overflow: hidden;
	position: relative;
	flex-direction: column;
	justify-content: center;
	align-items: center;
	min-height: 100vh;
	background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
	font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}
/* 动态背景装饰 */
body::before {
	position: absolute;
	right: -250px;
	top: -250px;
	border-radius: 50%;
	width: 500px;
	height: 500px;
	background: rgba(255, 255, 255, 0.1);
	content: '';
	animation: float 6s ease-in-out infinite;
}
body::after {
	position: absolute;
	left: -150px;
	bottom: -150px;
	border-radius: 50%;
	width: 300px;
	height: 300px;
	background: rgba(255, 255, 255, 0.08);
	content: '';
	animation: float 8s ease-in-out infinite reverse;
}
@keyframes float {
	0%, 100% {
		transform: translateY(0) translateX(0);
	}
	50% {
		transform: translateY(-20px) translateX(20px);
	}
}
/* 主容器 */
.game-header {
	position: relative;
	z-index: 10;
	margin-bottom: 50px;
	padding: 40px;
	border-radius: 30px;
	max-width: 600px;
	background: rgba(255, 255, 255, 0.95);
	box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
	backdrop-filter: blur(10px);
	text-align: center;
	animation: slidedown 0.8s ease-out;
}
@keyframes slidedown {
	from {
		opacity: 0;
		transform: translateY(-50px);
	}
	to {
		opacity: 1;
		transform: translateY(0);
	}
}
.title {
	display: inline-block;
	position: relative;
	margin-bottom: 20px;
	background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
	background-clip: text;
	text-transform: uppercase;
	font-weight: 900;
	font-size: 3.5em;
	letter-spacing: 3px;
	animation: pulse 2s ease-in-out infinite;
	-webkit-text-fill-color: transparent;
}
@keyframes pulse {
	0%, 100% {
		transform: scale(1);
	}
	50% {
		transform: scale(1.05);
	}
}
.title::after {
	position: absolute;
	left: 50%;
	bottom: -10px;
	border-radius: 2px;
	width: 80%;
	height: 4px;
	background: linear-gradient(90deg, transparent, #667eea, transparent);
	content: '';
	transform: translateX(-50%);
}
.subtitle {
	display: inline-block;
	margin-top: 20px;
	padding: 15px 30px;
	border-radius: 50px;
	background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
	box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
	font-weight: 500;
	font-size: 1.2em;
	color: #555;
	animation: bounce 2s ease-in-out infinite;
}
@keyframes bounce {
	0%, 100% {
		transform: translateY(0);
	}
	50% {
		transform: translateY(-5px);
	}
}
/* 几何装饰元素 */
.geo-cube {
	position: absolute;
	z-index: 1;
	border: 2px solid rgba(255, 255, 255, 0.5);
	width: 50px;
	height: 50px;
	background: rgba(255, 255, 255, 0.2);
	animation: rotate3d 4s linear infinite;
}
.cube1 {
	left: 10%;
	top: 10%;
	animation-delay: 0s;
}
.cube2 {
	right: 15%;
	top: 70%;
	animation-delay: 1s;
}
.cube3 {
	left: 5%;
	top: 40%;
	animation-delay: 2s;
}
@keyframes rotate3d {
	0% {
		transform: rotate(0deg) scale(1);
	}
	50% {
		transform: rotate(180deg) scale(1.2);
	}
	100% {
		transform: rotate(360deg) scale(1);
	}
}
/* 响应式设计 */
@media (max-width: 768px) {
	.title {
		font-size: 2.5em;
	}
	.subtitle {
		padding: 12px 25px;
		font-size: 1em;
	}
	.game-header {
		margin: 20px;
		padding: 30px 20px;
	}
}