body {
	font-family: Arial, sans-serif;
	background: #f7f7f7;
	margin: 0;
	padding: 20px;
}

.container {
	max-width: 1100px;
	margin: 0 auto;
	background: #fff;
	padding: 20px 30px;
	border-radius: 8px;
	box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

h2 {
	margin-top: 30px;
	margin-bottom: 15px;
	font-weight: 600;
}

.data-table {
	width: 100%;
	border-collapse: collapse;
	margin-bottom: 25px;
}

.data-table th,
.data-table td {
	border: 1px solid #ccc;
	padding: 8px;
	text-align: center;
}

.data-table th {
	background: #eee;
	font-weight: 600;
}

.data-table input {
	width: 100%;
	padding: 5px;
	box-sizing: border-box;
	border: 1px solid #bbb;
	border-radius: 4px;
}

#calc-btn {
	padding: 10px 20px;
	border: none;
	background: #0078ff;
	color: #fff;
	font-size: 16px;
	border-radius: 5px;
	cursor: pointer;
}

#calc-btn:hover {
	background: #005fcc;
}

#output {
	padding: 10px;
	background: #fafafa;
	border: 1px solid #ddd;
	border-radius: 5px;
	min-height: 40px;
}