* {
	margin: 0;
	padding: 0;
	box-sizing: border-box;
}
a {
	text-decoration: none;
}
html,
body {
	position: relative;
	width: 100%;
	height: 100%;
}

body {
	font-size: 12px;
	font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
	/* 蓝白渐变背景 */
	background: linear-gradient(160deg, #e8f2ff 0%, #f4f9ff 40%, #ffffff 70%, #dcecff 100%);
	min-height: 100vh;
	overflow: hidden;
}

/* 粒子动画画层 */
#particle-canvas {
	position: fixed;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	z-index: 0;
	pointer-events: none;
}

.centerBox {
	position: relative;
	z-index: 1;
	width: 100%;
	height: 100vh;
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
}

.centerBody {
	text-align: center;
	transform: translateY(-4vh);
}

.btn-p {
	margin: 0;
}

/* 登录后台按钮：放大居中 */
.btn-p a {
	display: inline-block;
	font-size: 22px;
	font-weight: 600;
	letter-spacing: 8px;
	text-indent: 8px; /* 抵消最后一个字的字距，保证视觉居中 */
	color: #ffffff;
	padding: 18px 76px;
	border-radius: 999px;
	background: linear-gradient(135deg, #4096ff 0%, #1668dc 100%);
	border: 1px solid rgba(255, 255, 255, 0.4);
	box-shadow: 0 12px 32px rgba(22, 104, 220, 0.35), 0 2px 8px rgba(22, 104, 220, 0.18);
	transition: all 0.3s ease;
	animation: breathe 3s ease-in-out infinite;
}
.btn-p a:hover {
	transform: translateY(-3px) scale(1.03);
	box-shadow: 0 18px 44px rgba(22, 104, 220, 0.45), 0 4px 12px rgba(22, 104, 220, 0.25);
}
@keyframes breathe {
	0%, 100% {
		box-shadow: 0 12px 32px rgba(22, 104, 220, 0.35), 0 2px 8px rgba(22, 104, 220, 0.18);
	}
	50% {
		box-shadow: 0 12px 42px rgba(22, 104, 220, 0.5), 0 2px 8px rgba(22, 104, 220, 0.22);
	}
}

.txt-w {
	margin-top: 36px;
}
.txt-w font,
.txt-w {
	color: #7d9bc4;
	font-size: 12px;
	letter-spacing: 11px;
	font-weight: 100;
}

.footer {
	position: fixed;
	bottom: 20px;
	width: 100%;
	z-index: 1;
}
.center-footer {
	width: 70%;
	margin: 0 15%;
	text-align: center;
}
.footer .banquan {
	text-align: center;
	font-size: 12px;
	color: #8aa3c6;
}
.footer .banquan a {
	color: #8aa3c6;
	transition: color 0.2s ease;
}
.footer .banquan a:hover {
	color: #1668dc;
}

@media screen and (max-width: 950px) {
	.centerBody {
		transform: translateY(-8vh);
	}
	.btn-p a {
		font-size: 18px;
		letter-spacing: 6px;
		text-indent: 6px;
		padding: 15px 52px;
	}
	.center-footer {
		width: 90%;
		margin: 0 5%;
	}
}