/* 回到顶部按钮样式 */
.back-to-top {
	position: fixed;
	bottom: 30px;
	right: 30px;
	width: 50px;
	height: 50px;
	background: linear-gradient(135deg, #3498db, #2c3e50);
	color: white;
	border: none;
	border-radius: 50%;
	cursor: pointer;
	display: flex;
	justify-content: center;
	align-items: center;
	font-size: 20px;
	box-shadow: 0 4px 20px rgba(52, 152, 219, 0.5);
	transition: all 0.3s ease;
	opacity: 0;
	visibility: hidden;
	z-index: 1000;
}

.back-to-top.show {
	opacity: 1;
	visibility: visible;
}

.back-to-top:hover {
	transform: translateY(-5px);
	box-shadow: 0 6px 25px rgba(52, 152, 219, 0.7);
	background: linear-gradient(135deg, #2980b9, #1a252f);
}

.back-to-top:active {
	transform: translateY(0);
}

/* 响应式设计 */
@media (max-width: 768px) {
	.back-to-top {
		bottom: 20px;
		right: 20px;
		width: 45px;
		height: 45px;
		font-size: 18px;
	}

	h1 {
		font-size: 2rem;
	}
}

@media (max-width: 480px) {
	.back-to-top {
		bottom: 15px;
		right: 15px;
		width: 40px;
		height: 40px;
		font-size: 16px;
	}
}