body {
	font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
	margin: 20px;
	background-color: #f4f4f9;
	color: #333;
}
.container {
	max-width: 600px;
	margin: 0 auto;
	background-color: #fff;
	padding: 25px;
	border-radius: 10px;
	box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}
h2 {
	text-align: center;
	color: #0056b3;
	border-bottom: 2px solid #0056b3;
	padding-bottom: 10px;
	margin-bottom: 20px;
}
.input-group, .result-group {
	margin-bottom: 15px;
}
label {
	display: block;
	margin-bottom: 5px;
	font-weight: bold;
}
input[type="number"], select {
	width: calc(100% - 12px);
	padding: 8px;
	border: 1px solid #ccc;
	border-radius: 5px;
	box-sizing: border-box;
}
.result-group {
	padding: 10px;
	border: 1px solid #ddd;
	border-radius: 5px;
	background-color: #e9ecef;
}
.result-group p {
	margin: 5px 0;
	font-size: 1.1em;
	font-weight: bold;
}
#R_Gas_Result {
	color: #d9534f; /* R-Gas: 赤系 */
}
#T_Gas_Result {
	color: #28a745; /* T-Gas: 緑系 */
}
.note {
	font-size: 0.9em;
	color: #6c757d;
	margin-top: 5px;
}
.factor-table {
	width: 100%;
	border-collapse: collapse;
	margin-top: 10px;
	font-size: 0.9em;
}
.factor-table th, .factor-table td {
	border: 1px solid #ddd;
	padding: 8px;
	text-align: left;
}
.factor-table th {
	background-color: #f2f2f2;
}