.formula-key-strength {
	--ks-ink: #143248;
	--ks-muted: #5c7082;
	--ks-line: #d7e1e9;
	--ks-soft: #f4f8fb;
	--ks-accent: #0b6d80;
	--ks-accent-strong: #084e5c;
	--ks-panel: #ffffff;
}

.key-section {
	padding: 28px 0 64px;
}

.key-tabs {
	display: flex;
	flex-direction: column;
	gap: 18px;
}

.key-tab-nav {
	display: flex;
	flex-wrap: wrap;
	gap: 12px;
}

.key-tool-tab-btn {
	padding: 12px 18px;
	border-radius: 999px;
	border: 1px solid var(--ks-line);
	background: #fff;
	color: var(--ks-ink);
	font-weight: 600;
	font-size: 14px;
	cursor: pointer;
	transition: all 0.2s ease;
}

.key-tool-tab-btn:hover,
.key-tool-tab-btn:focus-visible {
	border-color: var(--ks-accent);
	transform: translateY(-1px);
	outline: none;
}

.key-tool-tab-btn.active {
	background: var(--ks-accent);
	border-color: var(--ks-accent);
	color: #fff;
}

.key-tab-panel {
	padding: 24px;
	border: 1px solid var(--ks-line);
	border-radius: 22px;
	background: var(--ks-panel);
	box-shadow: 0 14px 28px rgba(16, 45, 70, 0.06);
}

.key_strength {
	display: flex;
	flex-direction: column;
	gap: 16px;
}

.mode-select__label {
	font-size: 14px;
	font-weight: 700;
	color: var(--ks-ink);
	text-transform: uppercase;
	letter-spacing: 0.06em;
}

.mode-select-area {
	display: grid;
	grid-template-columns: repeat(3, minmax(0, 1fr));
	gap: 12px;
}

.key-shape-btn {
	display: flex;
	flex-direction: column;
	gap: 8px;
	padding: 10px;
	border: 1px solid var(--ks-line);
	border-radius: 14px;
	background: #fff;
	cursor: pointer;
	transition: all 0.2s ease;
	text-align: center;
	align-items: center;
}

.key-shape-btn:hover,
.key-shape-btn:focus-visible {
	border-color: var(--ks-accent);
	transform: translateY(-1px);
	outline: none;
}

.key-shape-btn.active {
	border-color: var(--ks-accent);
	background: #eff8fb;
	box-shadow: inset 0 0 0 1px rgba(11, 109, 128, 0.2);
}

.select-mode {
	margin: 0;
	width: 88px;
	height: 88px;
	overflow: hidden;
	border-radius: 10px;
	background: var(--ks-soft);
}

.select-mode img {
	width: 100%;
	height: 100%;
	object-fit: cover;
	display: block;
}

.key-shape-btn span {
	font-size: 13px;
	font-weight: 600;
	color: var(--ks-ink);
}

.calc_key__area {
	display: block;
}

.calc_key__panel {
	display: none;
	padding: 16px;
	border: 1px solid var(--ks-line);
	border-radius: 14px;
	background: var(--ks-soft);
}

.calc_key__panel.active {
	display: block;
}

.calc_key__figure {
	margin: 0 auto 12px;
	width: min(100%, 520px);
	border-radius: 12px;
	overflow: hidden;
	border: 1px solid var(--ks-line);
	background: #fff;
}

.calc_key__figure img {
	display: block;
	width: 100%;
	height: auto;
	max-height: 220px;
	object-fit: cover;
}

.calc_key__formula-note,
.calc_key__formula-mini {
	margin: 0 0 12px;
	padding: 10px 12px;
	border: 1px dashed #c7d6e2;
	border-radius: 10px;
	background: #fff;
	color: var(--ks-accent-strong);
	font-size: 16px;
	overflow-x: auto;
}

.calc_key__formula-mini {
	margin-bottom: 10px;
}

.calc_key__table {
	display: grid;
	grid-template-columns: repeat(2, minmax(0, 1fr));
	gap: 16px;
}

.calc_key__col {
	background: #fff;
	border: 1px solid var(--ks-line);
	border-radius: 12px;
	padding: 14px;
}

.calc_key__col-title {
	display: inline-block;
	margin-bottom: 10px;
	font-size: 14px;
	font-weight: 700;
	color: var(--ks-ink);
}

.calc_key__col table {
	width: 100%;
	border-collapse: collapse;
}

.calc_key__col td {
	padding: 6px;
	border-bottom: 1px solid #edf2f6;
	font-size: 18px;
	color: var(--ks-ink);
	vertical-align: middle;
    min-width: 50px
}

.calc_key__col tr:last-child td {
	border-bottom: 0;
}

.key-input,
.key-unit,
.key-output,
.key-output-unit {
	height: 38px;
	padding: 0 10px;
	border-radius: 9px;
	border: 1px solid #cfdae3;
	font-size: 13px;
	color: var(--ks-ink);
	background: #fff;
}

.key-output {
	background: #f3f6f9;
	color: var(--ks-muted);
}

.key-panel-error {
	margin: 10px 0 0;
	font-size: 12px;
	color: #bb2e2e;
	min-height: 18px;
}

@media (max-width: 980px) {
	.calc_key__table {
		grid-template-columns: 1fr;
	}
}

@media (max-width: 768px) {
	.key-tab-panel {
		padding: 14px;
	}

	.mode-select-area {
		grid-template-columns: 1fr;
	}

	.select-mode {
		width: 72px;
		height: 72px;
	}

	.calc_key__panel {
		padding: 12px;
	}

	.calc_key__col td {
		font-size: 15px;
	}
}