body {
	background-color: #f8fafc;
	max-width: 900px;
	margin: 0 auto;
	font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

.card {
	background-color: white;
	border-radius: 12px;
	box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
	padding: 20px;
	margin-bottom: 20px;
}

.mt-4 {
	margin-bottom: 70px;
}

.activity-header {
	color: #333;
	font-size: 18px;
	font-weight: bold;
	margin-bottom: 15px;
	padding-bottom: 10px;
	border-bottom: 1px solid #eee;
}

.info-item {
	margin-bottom: 12px;
	font-size: 15px;
	color: #444;
	line-height: 1.6;
}

.info-label {
	color: #666;
	min-width: 100px;
	display: inline-block;
}

.timeline {
	position: relative;
	padding-left: 20px;
	border-left: 2px solid #e2e8f0;
}

.timeline-item {
	position: relative;
	padding-bottom: 20px;
	padding-left: 20px;
}

.timeline-item:last-child {
	padding-bottom: 0;
}

.timeline-dot {
	position: absolute;
	left: -11px;
	top: 5px;
	width: 12px;
	height: 12px;
	border-radius: 50%;
	background-color: #4299e1;
}

.timeline-item.first  .timeline-dot {
	background-color: #ef4444;
	width: 16px;
	height: 16px;
	left: -13px;
}

.timeline-time {
	color: #718096;
	font-size: 13px;
	margin-bottom: 5px;
}

.timeline-content {
	color: #4a5568;
}

.bottom-nav {
	position: fixed;
	bottom: 0;
	left: 0;
	right: 0;
	background: white;
	box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
	max-width: 900px;
	margin: 0 auto;
	z-index: 100;
}

.nav-item {
	flex: 1;
	text-align: center;
	padding-top: 5px;
	color: #666;
}

.nav-item.active  {
	color: #f37b1d;
}

.nav-icon {
	width: 24px;
	height: 24px;
	margin: 0 auto 5px;
}

.btn-primary {
	background-color: #3b82f6;
	color: white;
	padding: 8px 20px;
	border-radius: 6px;
	font-size: 16px;
	border: none;
	cursor: pointer;
	transition: background-color 0.3s;
}

.btn-primary:hover {
	background-color: #2563eb;
}

.status-badge {
	display: inline-block;
	padding: 3px 8px;
	border-radius: 12px;
	font-size: 12px;
	margin-left: 8px;
}

.status-pending {
	background-color: #fef3c7;
	color: #92400e;
}

.status-approved {
	background-color: #d1fae5;
	color: #065f46;
}

.status-started {
	background-color: #dbeafe;
	color: #1e40af;
}

.status-finished {
	background-color: #e5e7eb;
	color: #4b5563;
}