:root {
	--btxfk-red: #b4202a;
	--btxfk-green: #1d4b3a;
	--btxfk-ink: #171a18;
	--btxfk-muted: #68716c;
	--btxfk-paper: #f7f7f3;
	--btxfk-line: #dfe4df;
}

.btxfk-single,
.btxfk-archive {
	box-sizing: border-box;
	clear: both;
	color: var(--btxfk-ink);
	float: none;
	font-family: inherit;
	margin: 0 auto;
	max-width: 1240px;
	padding: clamp(24px, 5vw, 72px) 24px 96px;
	width: 100%;
}

/* Neutralize theme layouts that set #primary to a narrow or floated column. */
#primary.btxfk-single,
#primary.btxfk-archive {
	float: none !important;
	margin-left: auto !important;
	margin-right: auto !important;
	max-width: 1240px !important;
	width: 100% !important;
}

.btxfk-single *,
.btxfk-archive * { box-sizing: border-box; }

.btxfk-eyebrow {
	color: var(--btxfk-green);
	font-size: 12px;
	font-weight: 700;
	letter-spacing: .12em;
	margin: 0 0 16px;
	text-transform: uppercase;
}

.btxfk-eyebrow a { color: inherit; text-decoration: none; }

.btxfk-hero {
	align-items: center;
	display: grid;
	gap: clamp(32px, 6vw, 88px);
	grid-template-columns: minmax(0, .9fr) minmax(320px, 1.1fr);
	margin-bottom: clamp(56px, 8vw, 112px);
}

.btxfk-hero h1,
.btxfk-archive-header h1 {
	font-size: clamp(42px, 7vw, 88px);
	font-weight: 600;
	letter-spacing: -.045em;
	line-height: .98;
	margin: 0;
}

.btxfk-title-en {
	color: var(--btxfk-muted);
	font-size: clamp(19px, 2vw, 27px);
	line-height: 1.3;
	margin: 18px 0 0;
}

.btxfk-lead {
	font-size: clamp(18px, 2vw, 23px);
	line-height: 1.65;
	margin: 32px 0;
}

.btxfk-hero-image { aspect-ratio: 4 / 5; overflow: hidden; }
.btxfk-hero-image img,
.btxfk-card-image img { height: 100%; object-fit: cover; width: 100%; }
.btxfk-image-placeholder { background: linear-gradient(145deg, #edf0ec, #dfe6df); display: block; height: 100%; width: 100%; }


.btxfk-specs {
	border-bottom: 1px solid var(--btxfk-line);
	border-top: 1px solid var(--btxfk-line);
	margin: -28px 0 clamp(52px, 7vw, 88px);
	padding: 26px 0 30px;
}
.btxfk-specs-heading { align-items: baseline; display: flex; gap: 14px; justify-content: space-between; margin-bottom: 18px; }
.btxfk-specs-heading .btxfk-eyebrow { margin: 0; }
.btxfk-specs-heading > p:last-child { color: var(--btxfk-muted); font-size: 12px; margin: 0; }
.btxfk-spec-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); }
.btxfk-spec-item { min-width: 0; padding: 4px 22px 6px 0; }
.btxfk-spec-item + .btxfk-spec-item { border-left: 1px solid var(--btxfk-line); padding-left: 22px; }
.btxfk-spec-label { display: flex; flex-direction: column; gap: 2px; margin-bottom: 8px; }
.btxfk-spec-label strong { font-size: 13px; letter-spacing: .02em; }
.btxfk-spec-label span { color: var(--btxfk-muted); font-size: 11px; }
.btxfk-spec-value { font-size: clamp(16px, 1.7vw, 20px); font-weight: 600; line-height: 1.35; overflow-wrap: anywhere; }

.btxfk-language { display: inline-flex; gap: 8px; }
.btxfk-language button {
	background: transparent;
	border: 1px solid var(--btxfk-line);
	border-radius: 999px;
	color: var(--btxfk-ink);
	cursor: pointer;
	font: inherit;
	font-size: 13px;
	font-weight: 700;
	padding: 8px 16px;
}
.btxfk-language button.is-active { background: var(--btxfk-green); border-color: var(--btxfk-green); color: #fff; }

.btxfk-content-layout {
	display: grid;
	gap: clamp(40px, 7vw, 96px);
	grid-template-columns: minmax(0, 1fr) 260px;
}

.btxfk-main-content { max-width: 780px; }
.btxfk-language-panel[hidden] { display: none !important; }
.btxfk-section { border-top: 1px solid var(--btxfk-line); padding: 40px 0 24px; }
.btxfk-section h2 { font-size: clamp(25px, 3vw, 38px); letter-spacing: -.025em; margin: 0 0 22px; }
.btxfk-richtext { color: #303733; font-size: 17px; line-height: 1.8; }
.btxfk-richtext p:first-child { margin-top: 0; }
.btxfk-richtext ul { padding-left: 1.25em; }
.btxfk-richtext li { margin-bottom: 8px; }

.btxfk-product-list { border: 1px solid var(--btxfk-line); }
.btxfk-product-row { align-items: baseline; display: grid; gap: 16px; grid-template-columns: 150px 1fr; padding: 15px 18px; }
.btxfk-product-row + .btxfk-product-row { border-top: 1px solid var(--btxfk-line); }
.btxfk-product-row strong { color: var(--btxfk-red); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
.btxfk-product-row span { color: var(--btxfk-muted); }
.btxfk-disclaimer { color: var(--btxfk-muted); font-size: 13px; line-height: 1.6; }

.btxfk-aside { align-self: start; position: sticky; top: 32px; }
.btxfk-qr-card,
.btxfk-property-card { background: var(--btxfk-paper); padding: 24px; }
.btxfk-property-card { margin-top: 16px; }
.btxfk-property-card h3 { font-size: 16px; margin: 0 0 14px; }
.btxfk-qr { text-align: center; }
.btxfk-qr svg { background: #fff; display: block; height: auto; margin: 0 auto 12px; max-width: 100%; }
.btxfk-qr a { color: var(--btxfk-muted); display: block; font-size: 10px; overflow-wrap: anywhere; text-decoration: none; }
.btxfk-knowledge-id { color: var(--btxfk-red); font: 700 12px/1.4 ui-monospace, SFMono-Regular, Menlo, monospace; letter-spacing: .06em; }
.btxfk-qr-card > p:last-child { color: var(--btxfk-muted); font-size: 13px; line-height: 1.5; text-align: center; }

.btxfk-chip {
	border: 1px solid var(--btxfk-line);
	border-radius: 999px;
	color: var(--btxfk-ink);
	display: inline-block;
	font-size: 13px;
	margin: 0 5px 7px 0;
	padding: 7px 12px;
	text-decoration: none;
}
.btxfk-chip.is-active,
.btxfk-chip:hover { background: var(--btxfk-green); border-color: var(--btxfk-green); color: #fff; }

.btxfk-sources ol { color: var(--btxfk-muted); font-size: 14px; line-height: 1.65; padding-left: 20px; }
.btxfk-sources a { color: var(--btxfk-green); overflow-wrap: anywhere; }
.btxfk-reviewed { color: var(--btxfk-muted); font-size: 12px; }

.btxfk-archive-header { border-bottom: 1px solid var(--btxfk-line); margin-bottom: 42px; padding-bottom: 42px; }
.btxfk-archive-header > p:not(.btxfk-eyebrow) { font-size: 18px; line-height: 1.6; margin: 24px 0 0; }
.btxfk-archive-header .btxfk-archive-en { color: var(--btxfk-muted); margin-top: 4px !important; }
.btxfk-filter { margin-bottom: 28px; }
.btxfk-search { display: flex; margin: 0 0 18px; max-width: 620px; }
.btxfk-search input { background: #fff; border: 1px solid var(--btxfk-line); border-radius: 0; color: var(--btxfk-ink); flex: 1; font: inherit; min-width: 0; padding: 13px 16px; }
.btxfk-search button { background: var(--btxfk-green); border: 1px solid var(--btxfk-green); border-radius: 0; color: #fff; cursor: pointer; font: inherit; font-weight: 700; padding: 13px 20px; }
.btxfk-grid { display: grid; gap: 32px 22px; grid-template-columns: repeat(3, minmax(0, 1fr)); }
.btxfk-card { background: #fff; border: 1px solid var(--btxfk-line); }
.btxfk-card-image { aspect-ratio: 4 / 5; display: block; overflow: hidden; }
.btxfk-card-image img { transition: transform .45s ease; }
.btxfk-card:hover .btxfk-card-image img { transform: scale(1.025); }
.btxfk-card-body { padding: 24px; }
.btxfk-card h2 { font-size: 26px; letter-spacing: -.025em; line-height: 1.15; margin: 8px 0 14px; }
.btxfk-card h2 a { color: inherit; text-decoration: none; }
.btxfk-card p { color: var(--btxfk-muted); font-size: 15px; line-height: 1.65; }
.btxfk-text-link { color: var(--btxfk-red); font-size: 14px; font-weight: 700; text-decoration: none; }

@media (max-width: 900px) {
	.btxfk-hero { grid-template-columns: 1fr; }
	.btxfk-hero-image { max-height: 720px; order: -1; }
	.btxfk-content-layout { grid-template-columns: 1fr; }
	.btxfk-aside { display: grid; gap: 16px; grid-template-columns: 1fr 1fr; position: static; }
	.btxfk-property-card { margin: 0; }
	.btxfk-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
	.btxfk-spec-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
	.btxfk-spec-item:nth-child(3) { border-left: 0; padding-left: 0; }
	.btxfk-spec-item:nth-child(n+3) { border-top: 1px solid var(--btxfk-line); margin-top: 18px; padding-top: 18px; }
}

@media (max-width: 620px) {
	.btxfk-single,
	.btxfk-archive { padding-left: 10px; padding-right: 10px; }
	.btxfk-grid { grid-template-columns: 1fr; }
	.btxfk-aside { grid-template-columns: 1fr; }
	.btxfk-product-row { grid-template-columns: 1fr; gap: 3px; }
	.btxfk-specs { margin-top: -22px; }
	.btxfk-specs-heading { align-items: flex-start; flex-direction: column; gap: 5px; }
	.btxfk-spec-grid { grid-template-columns: 1fr; }
	.btxfk-spec-item,
	.btxfk-spec-item + .btxfk-spec-item,
	.btxfk-spec-item:nth-child(3) { border-left: 0; padding-left: 0; }
	.btxfk-spec-item:nth-child(n+2) { border-top: 1px solid var(--btxfk-line); margin-top: 14px; padding-top: 14px; }
}

@media print {
	.btxfk-language,
	.btxfk-archive,
	header.site-header,
	footer.site-footer { display: none !important; }
	.btxfk-language-panel[hidden] { display: block !important; }
	.btxfk-single { max-width: none; padding: 0; }
	.btxfk-hero { grid-template-columns: 1fr 42%; }
	.btxfk-aside { position: static; }
}