/* 页脚 - 自然渐变 */
footer {
	background: linear-gradient(135deg, var(--dark-green), #154734);
	color: white;
	padding: 3rem 0 1rem;
	position: relative;
	overflow: hidden;
}

footer::before {
	content: '';
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><path fill="rgba(255,255,255,0.05)" d="M20,20 Q40,5 60,20 T100,20 Q80,40 60,20 T20,20" /></svg>');
	background-size: 200px;
	opacity: 0.3;
}

.footer-content {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
	gap: 2rem;
	margin-bottom: 2rem;
	position: relative;
	z-index: 1;
}

.footer-section h4 {
	margin-bottom: 1rem;
	color: var(--accent-green);
	position: relative;
	display: inline-block;
}

.footer-section h4::after {
	content: '';
	position: absolute;
	bottom: -5px;
	left: 0;
	width: 40px;
	height: 2px;
	background: var(--accent-green);
}

.footer-section ul {
	list-style: none;
}

.footer-section a {
	color: rgba(255, 255, 255, 0.8);
	text-decoration: none;
	transition: all 0.3s ease;
	display: block;
	padding: 0.25rem 0;
}

.footer-section a:hover {
	color: white;
	padding-left: 5px;
}

.footer-bottom {
	text-align: center;
	padding-top: 2rem;
	border-top: 1px solid rgba(255, 255, 255, 0.1);
	color: rgba(255, 255, 255, 0.7);
	position: relative;
	z-index: 1;
}