.qf-calculator {
	max-width: 640px;
	margin: 0 auto;
	font-family: inherit;
}
.qf-calculator hr {
	margin: 24px 0;
	border: none;
	border-top: 1px solid #e0e0e0;
}
.qf-calculator h4 {
	margin: 0 0 12px;
}
.qf-row {
	margin-bottom: 16px;
}
.qf-cols-2 {
	display: flex;
	gap: 16px;
}
.qf-cols-2 > div {
	flex: 1;
}
.qf-calculator label {
	display: block;
	margin-bottom: 4px;
	font-weight: 600;
}
.qf-calculator input[type="text"],
.qf-calculator input[type="email"],
.qf-calculator input[type="tel"],
.qf-calculator input[type="number"],
.qf-calculator textarea {
	width: 100%;
	padding: 8px 10px;
	border: 1px solid #ccc;
	border-radius: 4px;
	box-sizing: border-box;
	font-size: 1em;
}
.qf-req {
	color: #c0392b;
}
.qf-radio-group {
	display: flex;
	gap: 16px;
}
.qf-radio-group label {
	display: flex;
	align-items: center;
	gap: 6px;
	font-weight: 400;
}
.qf-surface-hint {
	color: #555;
	font-size: 0.9em;
}
.qf-sizes {
	display: flex;
	flex-direction: column;
	gap: 10px;
}
.qf-size-row {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 12px;
	padding: 8px 12px;
	background: #f7f7f7;
	border-radius: 6px;
}
.qf-size-row label {
	margin: 0;
	font-weight: 400;
}
.qf-size-row .qf-qty-input {
	width: 80px;
}
.qf-size-unavailable {
	opacity: 0.5;
}
.qf-total {
	font-size: 1.15em;
	margin: 20px 0;
}
.qf-submit {
	display: inline-block;
	padding: 12px 28px;
	background: #1c3d5c;
	color: #fff;
	border: none;
	border-radius: 6px;
	font-size: 1em;
	font-weight: 600;
	cursor: pointer;
}
.qf-submit:hover {
	background: #15304a;
}