/*
Theme Name: Quietform Acoustics
Theme URI: https://example.com/blackfelt-acoustics
Author: Quietform Studio
Author URI: https://example.com
Description: A hand-built dark, warm-industrial WordPress theme for acoustic engineering studios and B2B acoustic treatment manufacturers. Walnut, black felt and brass. Ships a product custom post type with product-line and application-space taxonomies, an acoustic specification table, scroll reveal animations that respect reduced-motion, native lazy loading and a full Customizer panel.
Version: 1.0.0
Requires at least: 6.0
Tested up to: 6.8
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: blackfelt-acoustics
Tags: business, portfolio, dark, custom-colors, custom-menu, custom-logo, featured-images, threaded-comments, translation-ready, block-styles, wide-blocks
*/

/* ==========================================================================
   1. Tokens
   ========================================================================== */

:root {
	--bf-bg: #131110;
	--bf-bg-alt: #191614;
	--bf-surface: #1f1b18;
	--bf-surface-2: #262119;
	--bf-line: #322b24;
	--bf-line-soft: rgba(200, 160, 74, 0.14);
	--bf-text: #ece6dd;
	--bf-text-dim: #a79c8e;
	--bf-text-faint: #7c7267;
	--bf-brass: #c8a04a;
	--bf-brass-bright: #e0bd72;
	--bf-walnut: #6d4526;
	--bf-walnut-light: #9a6a3f;
	--bf-felt: #24211e;
	--bf-danger: #d1614a;
	--bf-ok: #79a97b;

	--bf-font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Helvetica, Arial, sans-serif;
	--bf-font-display: "Helvetica Neue", -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
	--bf-font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;

	--bf-shell: 1280px;
	--bf-shell-narrow: 860px;
	--bf-gutter: 32px;
	--bf-radius: 3px;
	--bf-radius-lg: 6px;

	--bf-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.5);
	--bf-shadow: 0 18px 42px rgba(0, 0, 0, 0.5);
	--bf-shadow-lg: 0 34px 80px rgba(0, 0, 0, 0.6);

	--bf-ease: cubic-bezier(0.22, 0.61, 0.36, 1);
	--bf-header-h: 76px;
}

/* ==========================================================================
   2. Reset & base
   ========================================================================== */

*,
*::before,
*::after {
	box-sizing: border-box;
}

html {
	-webkit-text-size-adjust: 100%;
	scroll-behavior: smooth;
	scroll-padding-top: calc(var(--bf-header-h) + 20px);
}

body {
	margin: 0;
	background-color: var(--bf-bg);
	color: var(--bf-text);
	font-family: var(--bf-font-body);
	font-size: 16px;
	line-height: 1.72;
	font-weight: 400;
	-webkit-font-smoothing: antialiased;
	-moz-osx-font-smoothing: grayscale;
	overflow-x: hidden;
}

body.bf-nav-open,
body.zc-modal-open {
	overflow: hidden;
}

img,
svg,
video,
iframe {
	max-width: 100%;
	height: auto;
	display: block;
}

a {
	color: var(--bf-brass-bright);
	text-decoration: none;
	transition: color 0.22s var(--bf-ease);
}

a:hover,
a:focus-visible {
	color: var(--bf-text);
}

h1,
h2,
h3,
h4,
h5,
h6 {
	font-family: var(--bf-font-display);
	color: var(--bf-text);
	margin: 0 0 0.6em;
	line-height: 1.14;
	font-weight: 600;
	letter-spacing: -0.018em;
}

h1 {
	font-size: clamp(2.1rem, 5.2vw, 3.6rem);
}

h2 {
	font-size: clamp(1.65rem, 3.4vw, 2.5rem);
}

h3 {
	font-size: clamp(1.2rem, 2.1vw, 1.5rem);
}

h4 {
	font-size: 1.08rem;
}

p {
	margin: 0 0 1.2em;
}

p:last-child {
	margin-bottom: 0;
}

ul,
ol {
	padding-left: 1.25em;
}

blockquote {
	margin: 2em 0;
	padding: 0.2em 0 0.2em 1.5em;
	border-left: 2px solid var(--bf-brass);
	color: var(--bf-text-dim);
	font-size: 1.1rem;
	font-style: italic;
}

code,
kbd,
pre {
	font-family: var(--bf-font-mono);
	font-size: 0.9em;
}

code {
	background: var(--bf-surface);
	border: 1px solid var(--bf-line);
	border-radius: var(--bf-radius);
	padding: 0.12em 0.42em;
	color: var(--bf-brass-bright);
}

pre {
	background: var(--bf-surface);
	border: 1px solid var(--bf-line);
	border-radius: var(--bf-radius);
	padding: 20px;
	overflow-x: auto;
	max-width: 100%;
}

hr {
	border: 0;
	border-top: 1px solid var(--bf-line);
	margin: 3rem 0;
}

table {
	width: 100%;
	border-collapse: collapse;
	font-size: 0.94rem;
}

th,
td {
	border-bottom: 1px solid var(--bf-line);
	padding: 12px 14px;
	text-align: left;
}

th {
	color: var(--bf-text);
	font-weight: 600;
}

figure {
	margin: 2em 0;
}

figcaption {
	margin-top: 0.8em;
	color: var(--bf-text-faint);
	font-size: 0.85rem;
	font-family: var(--bf-font-mono);
	letter-spacing: 0.02em;
}

::selection {
	background: var(--bf-brass);
	color: #14100a;
}

:focus-visible {
	outline: 2px solid var(--bf-brass);
	outline-offset: 3px;
}

/* ==========================================================================
   3. Layout helpers
   ========================================================================== */

.bf-shell {
	width: 100%;
	max-width: var(--bf-shell);
	margin-inline: auto;
	padding-inline: var(--bf-gutter);
}

.bf-shell--narrow {
	max-width: var(--bf-shell-narrow);
}

.bf-section {
	padding-block: clamp(64px, 8vw, 118px);
	position: relative;
}

.bf-section--tight {
	padding-block: clamp(48px, 5.5vw, 80px);
}

.bf-section--alt {
	background: var(--bf-bg-alt);
}

.bf-section--felt {
	background:
		linear-gradient(180deg, rgba(0, 0, 0, 0.28), rgba(0, 0, 0, 0)),
		var(--bf-felt);
}

.bf-hairline {
	border-top: 1px solid var(--bf-line);
}

.screen-reader-text {
	position: absolute !important;
	width: 1px;
	height: 1px;
	padding: 0;
	margin: -1px;
	overflow: hidden;
	clip: rect(0, 0, 0, 0);
	white-space: nowrap;
	border: 0;
}

/*
 * Kept inside the horizontal bounds of the page — a `left: -9999px` skip link
 * widens the document's scroll box on narrow viewports.
 */
.skip-link {
	position: absolute;
	left: 0;
	top: 0;
	z-index: 999;
	background: var(--bf-brass);
	color: #14100a;
	padding: 12px 22px;
	font-weight: 600;
	border-radius: 0 0 var(--bf-radius) 0;
	transform: translateY(-120%);
	transition: transform 0.2s var(--bf-ease);
}

.skip-link:focus {
	transform: translateY(0);
}

/* ==========================================================================
   4. Typographic accents
   ========================================================================== */

.bf-eyebrow {
	display: inline-flex;
	align-items: center;
	gap: 10px;
	font-family: var(--bf-font-mono);
	font-size: 0.72rem;
	letter-spacing: 0.24em;
	text-transform: uppercase;
	color: var(--bf-brass);
	margin: 0 0 18px;
	font-weight: 500;
}

.bf-eyebrow::before {
	content: "";
	width: 26px;
	height: 1px;
	background: var(--bf-brass);
	flex: none;
}

.bf-eyebrow--center {
	justify-content: center;
}

.bf-lede {
	color: var(--bf-text-dim);
	font-size: clamp(1rem, 1.5vw, 1.12rem);
	max-width: 62ch;
	line-height: 1.78;
}

.bf-lede--center {
	margin-inline: auto;
}

.bf-section-head {
	margin-bottom: clamp(36px, 4.4vw, 62px);
	max-width: 780px;
}

.bf-section-head--center {
	margin-inline: auto;
	text-align: center;
}

.bf-section-head--center .bf-lede {
	margin-inline: auto;
}

.bf-section-head--split {
	max-width: none;
	display: flex;
	align-items: flex-end;
	justify-content: space-between;
	gap: 40px;
	flex-wrap: wrap;
}

.bf-section-head--split > div:first-child {
	max-width: 660px;
}

.bf-section-head h2 {
	margin-bottom: 0.5em;
}

/* ==========================================================================
   5. Buttons
   ========================================================================== */

.bf-btn,
.zc-btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: 10px;
	padding: 14px 28px;
	border: 1px solid transparent;
	border-radius: var(--bf-radius);
	font-family: var(--bf-font-body);
	font-size: 0.86rem;
	font-weight: 600;
	letter-spacing: 0.08em;
	text-transform: uppercase;
	line-height: 1.2;
	cursor: pointer;
	transition: background-color 0.24s var(--bf-ease), color 0.24s var(--bf-ease),
		border-color 0.24s var(--bf-ease), transform 0.24s var(--bf-ease);
	text-align: center;
}

.bf-btn--primary,
.zc-btn-primary {
	background: var(--bf-brass);
	color: #14100a;
	border-color: var(--bf-brass);
}

.bf-btn--primary:hover,
.bf-btn--primary:focus-visible,
.zc-btn-primary:hover,
.zc-btn-primary:focus-visible {
	background: var(--bf-brass-bright);
	border-color: var(--bf-brass-bright);
	color: #14100a;
	transform: translateY(-2px);
}

.bf-btn--ghost {
	background: transparent;
	color: var(--bf-text);
	border-color: var(--bf-line);
}

.bf-btn--ghost:hover,
.bf-btn--ghost:focus-visible {
	border-color: var(--bf-brass);
	color: var(--bf-brass-bright);
	transform: translateY(-2px);
}

.bf-btn--sm {
	padding: 10px 20px;
	font-size: 0.76rem;
}

.bf-textlink {
	display: inline-flex;
	align-items: center;
	gap: 9px;
	font-family: var(--bf-font-mono);
	font-size: 0.78rem;
	letter-spacing: 0.14em;
	text-transform: uppercase;
	color: var(--bf-brass);
	font-weight: 500;
}

.bf-textlink::after {
	content: "";
	width: 18px;
	height: 1px;
	background: currentColor;
	transition: width 0.26s var(--bf-ease);
}

.bf-textlink:hover::after,
.bf-textlink:focus-visible::after {
	width: 30px;
}

/* ==========================================================================
   6. Header / navigation
   ========================================================================== */

.bf-header {
	position: sticky;
	top: 0;
	z-index: 90;
	background: rgba(19, 17, 16, 0.86);
	backdrop-filter: saturate(150%) blur(14px);
	-webkit-backdrop-filter: saturate(150%) blur(14px);
	border-bottom: 1px solid var(--bf-line);
	transition: background-color 0.3s var(--bf-ease), border-color 0.3s var(--bf-ease);
}

.bf-header.is-scrolled {
	background: rgba(15, 13, 12, 0.96);
	border-bottom-color: var(--bf-line-soft);
}

.bf-header__inner {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 26px;
	min-height: var(--bf-header-h);
}

.bf-brand {
	display: inline-flex;
	align-items: center;
	gap: 13px;
	color: var(--bf-text);
	flex: none;
}

.bf-brand:hover,
.bf-brand:focus-visible {
	color: var(--bf-text);
}

.bf-brand__mark {
	width: 30px;
	height: 30px;
	flex: none;
	color: var(--bf-brass);
}

.bf-brand__text {
	display: flex;
	flex-direction: column;
	line-height: 1.1;
}

.bf-brand__name {
	font-family: var(--bf-font-display);
	font-size: 1.02rem;
	font-weight: 600;
	letter-spacing: 0.04em;
	text-transform: uppercase;
}

.bf-brand__tag {
	font-family: var(--bf-font-mono);
	font-size: 0.58rem;
	letter-spacing: 0.28em;
	text-transform: uppercase;
	color: var(--bf-text-faint);
	margin-top: 3px;
}

.bf-brand__logo img {
	max-height: 44px;
	width: auto;
}

.bf-nav {
	margin-left: auto;
}

.bf-nav ul {
	list-style: none;
	margin: 0;
	padding: 0;
	display: flex;
	align-items: center;
	gap: 4px;
}

.bf-nav li {
	position: relative;
}

.bf-nav a {
	display: block;
	padding: 9px 14px;
	color: var(--bf-text-dim);
	font-size: 0.83rem;
	font-weight: 500;
	letter-spacing: 0.04em;
	border-radius: var(--bf-radius);
	white-space: nowrap;
}

.bf-nav a:hover,
.bf-nav a:focus-visible {
	color: var(--bf-text);
	background: rgba(255, 255, 255, 0.04);
}

.bf-nav .current-menu-item > a,
.bf-nav .current_page_item > a,
.bf-nav .current-menu-ancestor > a,
.bf-nav .current-post-ancestor > a {
	color: var(--bf-brass-bright);
}

/* Sub menus */
.bf-nav ul ul {
	position: absolute;
	top: 100%;
	left: 0;
	min-width: 220px;
	flex-direction: column;
	align-items: stretch;
	gap: 0;
	background: var(--bf-surface);
	border: 1px solid var(--bf-line);
	border-radius: var(--bf-radius);
	box-shadow: var(--bf-shadow);
	padding: 6px;
	opacity: 0;
	visibility: hidden;
	transform: translateY(8px);
	transition: opacity 0.2s var(--bf-ease), transform 0.2s var(--bf-ease), visibility 0.2s;
	z-index: 30;
}

.bf-nav li:hover > ul,
.bf-nav li:focus-within > ul {
	opacity: 1;
	visibility: visible;
	transform: translateY(0);
}

.bf-header__cta {
	flex: none;
}

/* Duplicate CTA that only belongs inside the open mobile panel. */
.bf-nav__cta {
	display: none;
}

.bf-navtoggle {
	display: none;
	width: 44px;
	height: 44px;
	border: 1px solid var(--bf-line);
	border-radius: var(--bf-radius);
	background: transparent;
	cursor: pointer;
	padding: 0;
	position: relative;
	flex: none;
}

.bf-navtoggle span {
	position: absolute;
	left: 50%;
	width: 19px;
	height: 1.5px;
	background: var(--bf-text);
	transform: translateX(-50%);
	transition: transform 0.28s var(--bf-ease), opacity 0.2s var(--bf-ease);
}

.bf-navtoggle span:nth-child(1) {
	top: 15px;
}

.bf-navtoggle span:nth-child(2) {
	top: 21px;
}

.bf-navtoggle span:nth-child(3) {
	top: 27px;
}

.bf-navtoggle[aria-expanded="true"] span:nth-child(1) {
	transform: translateX(-50%) translateY(6px) rotate(45deg);
}

.bf-navtoggle[aria-expanded="true"] span:nth-child(2) {
	opacity: 0;
}

.bf-navtoggle[aria-expanded="true"] span:nth-child(3) {
	transform: translateX(-50%) translateY(-6px) rotate(-45deg);
}

/* ==========================================================================
   7. Hero
   ========================================================================== */

.bf-hero {
	position: relative;
	min-height: min(88vh, 780px);
	display: flex;
	align-items: flex-end;
	overflow: hidden;
	background: #0d0b0a;
	isolation: isolate;
}

.bf-hero__media {
	position: absolute;
	inset: 0;
	z-index: -2;
}

.bf-hero__media img {
	width: 100%;
	height: 100%;
	object-fit: cover;
	object-position: center 46%;
}

.bf-hero__scrim {
	position: absolute;
	inset: 0;
	z-index: -1;
	background:
		linear-gradient(180deg, rgba(13, 11, 10, 0.82) 0%, rgba(13, 11, 10, 0.32) 38%, rgba(13, 11, 10, 0.94) 100%),
		linear-gradient(90deg, rgba(13, 11, 10, 0.86) 0%, rgba(13, 11, 10, 0.18) 62%, rgba(13, 11, 10, 0.5) 100%);
}

.bf-hero__inner {
	padding-block: clamp(84px, 12vw, 132px);
	width: 100%;
}

.bf-hero__content {
	max-width: 760px;
}

.bf-hero h1 {
	margin-bottom: 0.42em;
	text-wrap: balance;
}

.bf-hero h1 em {
	font-style: normal;
	color: var(--bf-brass-bright);
}

.bf-hero__lede {
	font-size: clamp(1.02rem, 1.7vw, 1.2rem);
	color: #cfc7bc;
	max-width: 58ch;
	margin-bottom: 34px;
}

.bf-hero__actions {
	display: flex;
	flex-wrap: wrap;
	gap: 14px;
	margin-bottom: 42px;
}

.bf-hero__meta {
	display: flex;
	flex-wrap: wrap;
	gap: 14px 34px;
	padding-top: 26px;
	border-top: 1px solid rgba(236, 230, 221, 0.14);
	font-family: var(--bf-font-mono);
	font-size: 0.72rem;
	letter-spacing: 0.16em;
	text-transform: uppercase;
	color: var(--bf-text-dim);
}

.bf-hero__meta span {
	display: inline-flex;
	align-items: center;
	gap: 9px;
}

.bf-hero__meta span::before {
	content: "";
	width: 5px;
	height: 5px;
	background: var(--bf-brass);
	border-radius: 50%;
	flex: none;
}

/* ==========================================================================
   8. Stat bar
   ========================================================================== */

.bf-stats {
	background: var(--bf-surface);
	border-block: 1px solid var(--bf-line);
}

.bf-stats__grid {
	display: grid;
	grid-template-columns: repeat(4, 1fr);
	gap: 0;
}

.bf-stat {
	padding: clamp(30px, 4vw, 46px) clamp(18px, 2.4vw, 34px);
	border-right: 1px solid var(--bf-line);
	text-align: center;
}

.bf-stat:last-child {
	border-right: 0;
}

.bf-stat__value {
	display: block;
	font-family: var(--bf-font-display);
	font-size: clamp(1.9rem, 3.6vw, 2.85rem);
	font-weight: 600;
	color: var(--bf-brass-bright);
	line-height: 1;
	letter-spacing: -0.02em;
}

.bf-stat__label {
	display: block;
	margin-top: 12px;
	font-family: var(--bf-font-mono);
	font-size: 0.68rem;
	letter-spacing: 0.2em;
	text-transform: uppercase;
	color: var(--bf-text-faint);
	line-height: 1.5;
}

/* ==========================================================================
   9. Product cards & grid
   ========================================================================== */

.bf-grid {
	display: grid;
	gap: 26px;
}

.bf-grid--4 {
	grid-template-columns: repeat(4, minmax(0, 1fr));
}

.bf-grid--3 {
	grid-template-columns: repeat(3, minmax(0, 1fr));
}

.bf-grid--2 {
	grid-template-columns: repeat(2, minmax(0, 1fr));
}

.bf-card {
	position: relative;
	display: flex;
	flex-direction: column;
	background: var(--bf-surface);
	border: 1px solid var(--bf-line);
	border-radius: var(--bf-radius-lg);
	overflow: hidden;
	transition: border-color 0.3s var(--bf-ease), transform 0.3s var(--bf-ease),
		box-shadow 0.3s var(--bf-ease);
	height: 100%;
}

.bf-card:hover {
	border-color: var(--bf-line-soft);
	transform: translateY(-4px);
	box-shadow: var(--bf-shadow);
}

.bf-card__media {
	position: relative;
	aspect-ratio: 4 / 3;
	overflow: hidden;
	background: var(--bf-bg-alt);
}

.bf-card__media img {
	width: 100%;
	height: 100%;
	object-fit: cover;
	transition: transform 0.7s var(--bf-ease);
}

.bf-card:hover .bf-card__media img {
	transform: scale(1.05);
}

.bf-card__placeholder {
	position: absolute;
	inset: 0;
	display: grid;
	place-items: center;
	background:
		repeating-linear-gradient(135deg, rgba(200, 160, 74, 0.05) 0 10px, transparent 10px 20px),
		var(--bf-bg-alt);
	color: var(--bf-text-faint);
}

.bf-card__badge {
	position: absolute;
	top: 12px;
	left: 12px;
	background: rgba(13, 11, 10, 0.84);
	border: 1px solid var(--bf-line-soft);
	color: var(--bf-brass);
	font-family: var(--bf-font-mono);
	font-size: 0.62rem;
	letter-spacing: 0.16em;
	text-transform: uppercase;
	padding: 5px 10px;
	border-radius: var(--bf-radius);
	backdrop-filter: blur(6px);
	-webkit-backdrop-filter: blur(6px);
}

.bf-card__body {
	padding: 22px 22px 24px;
	display: flex;
	flex-direction: column;
	flex: 1 1 auto;
	gap: 10px;
}

.bf-card__title {
	font-size: 1.06rem;
	margin: 0;
	line-height: 1.34;
}

.bf-card__title a {
	color: var(--bf-text);
}

.bf-card__title a:hover,
.bf-card__title a:focus-visible {
	color: var(--bf-brass-bright);
}

.bf-card__excerpt {
	color: var(--bf-text-dim);
	font-size: 0.9rem;
	line-height: 1.66;
	margin: 0;
}

.bf-card__specs {
	display: flex;
	flex-wrap: wrap;
	gap: 6px;
	margin-top: auto;
	padding-top: 14px;
	border-top: 1px solid var(--bf-line);
}

.bf-chip {
	display: inline-block;
	font-family: var(--bf-font-mono);
	font-size: 0.64rem;
	letter-spacing: 0.1em;
	text-transform: uppercase;
	color: var(--bf-text-dim);
	background: var(--bf-bg-alt);
	border: 1px solid var(--bf-line);
	border-radius: 2px;
	padding: 4px 8px;
	white-space: nowrap;
}

.bf-chip--brass {
	color: var(--bf-brass);
	border-color: var(--bf-line-soft);
}

.bf-card__link {
	position: absolute;
	inset: 0;
	z-index: 2;
	text-indent: -9999px;
	overflow: hidden;
}

/* ==========================================================================
   10. Application spaces
   ========================================================================== */

.bf-space {
	position: relative;
	display: block;
	border-radius: var(--bf-radius-lg);
	overflow: hidden;
	min-height: 340px;
	border: 1px solid var(--bf-line);
	background: var(--bf-surface);
	isolation: isolate;
}

.bf-space img {
	position: absolute;
	inset: 0;
	width: 100%;
	height: 100%;
	object-fit: cover;
	z-index: -2;
	transition: transform 0.8s var(--bf-ease);
}

.bf-space::after {
	content: "";
	position: absolute;
	inset: 0;
	z-index: -1;
	background: linear-gradient(180deg, rgba(13, 11, 10, 0.16) 0%, rgba(13, 11, 10, 0.78) 62%, rgba(13, 11, 10, 0.95) 100%);
}

.bf-space:hover img,
.bf-space:focus-visible img {
	transform: scale(1.06);
}

.bf-space__body {
	position: absolute;
	inset: auto 0 0 0;
	padding: 26px 24px;
}

.bf-space__index {
	font-family: var(--bf-font-mono);
	font-size: 0.66rem;
	letter-spacing: 0.2em;
	color: var(--bf-brass);
	display: block;
	margin-bottom: 10px;
}

.bf-space__title {
	font-size: 1.22rem;
	margin: 0 0 8px;
	color: #fff;
}

/* Clamped to three lines so every card's title lands on the same baseline. */
.bf-space__text {
	color: #c7bfb4;
	font-size: 0.88rem;
	line-height: 1.6;
	margin: 0;
	display: -webkit-box;
	-webkit-line-clamp: 3;
	line-clamp: 3;
	-webkit-box-orient: vertical;
	overflow: hidden;
	min-height: calc(3 * 1.6em);
}

/* ==========================================================================
   11. Principles split
   ========================================================================== */

.bf-split {
	display: grid;
	grid-template-columns: 1.05fr 1fr;
	gap: clamp(36px, 5vw, 78px);
	align-items: center;
}

.bf-split--reverse .bf-split__media {
	order: 2;
}

.bf-split__media {
	position: relative;
	border-radius: var(--bf-radius-lg);
	overflow: hidden;
	border: 1px solid var(--bf-line);
	aspect-ratio: 4 / 3;
	background: var(--bf-bg-alt);
}

.bf-split__media img {
	width: 100%;
	height: 100%;
	object-fit: cover;
}

.bf-split__media::after {
	content: "";
	position: absolute;
	inset: 0;
	background: linear-gradient(180deg, rgba(13, 11, 10, 0) 40%, rgba(13, 11, 10, 0.45) 100%);
	pointer-events: none;
}

.bf-principles {
	list-style: none;
	margin: 32px 0 0;
	padding: 0;
	display: grid;
	gap: 2px;
	background: var(--bf-line);
	border: 1px solid var(--bf-line);
	border-radius: var(--bf-radius-lg);
	overflow: hidden;
}

.bf-principle {
	display: flex;
	gap: 18px;
	padding: 22px 24px;
	background: var(--bf-surface);
}

.bf-principle__no {
	font-family: var(--bf-font-mono);
	font-size: 0.72rem;
	letter-spacing: 0.14em;
	color: var(--bf-brass);
	padding-top: 4px;
	flex: none;
}

.bf-principle h3 {
	font-size: 1.02rem;
	margin: 0 0 6px;
}

.bf-principle p {
	margin: 0;
	color: var(--bf-text-dim);
	font-size: 0.9rem;
	line-height: 1.66;
}

/* Generic call-to-action card */
.bf-ctacard {
	margin-top: 30px;
	border: 1px solid var(--bf-line);
	border-radius: var(--bf-radius-lg);
	background: var(--bf-surface);
	padding: 22px 24px;
}

.bf-ctacard p {
	margin: 0 0 16px;
	color: var(--bf-text-dim);
	font-size: 0.9rem;
	line-height: 1.66;
}

.bf-ctacard__actions {
	display: flex;
	flex-wrap: wrap;
	gap: 12px;
}

/* ==========================================================================
   12. Case studies + certifications
   ========================================================================== */

.bf-case {
	position: relative;
	display: flex;
	flex-direction: column;
	border: 1px solid var(--bf-line);
	border-radius: var(--bf-radius-lg);
	overflow: hidden;
	background: var(--bf-surface);
	height: 100%;
	transition: border-color 0.3s var(--bf-ease), transform 0.3s var(--bf-ease);
}

.bf-case:hover {
	border-color: var(--bf-line-soft);
	transform: translateY(-4px);
}

.bf-case__media {
	aspect-ratio: 16 / 10;
	overflow: hidden;
	background: var(--bf-bg-alt);
}

.bf-case__media img {
	width: 100%;
	height: 100%;
	object-fit: cover;
	transition: transform 0.7s var(--bf-ease);
}

.bf-case:hover .bf-case__media img {
	transform: scale(1.05);
}

.bf-case__body {
	padding: 24px;
	display: flex;
	flex-direction: column;
	gap: 10px;
	flex: 1;
}

.bf-case__loc {
	font-family: var(--bf-font-mono);
	font-size: 0.64rem;
	letter-spacing: 0.18em;
	text-transform: uppercase;
	color: var(--bf-brass);
}

.bf-case h3 {
	font-size: 1.1rem;
	margin: 0;
}

.bf-case p {
	color: var(--bf-text-dim);
	font-size: 0.9rem;
	margin: 0;
}

.bf-case__result {
	margin-top: auto;
	padding-top: 16px;
	border-top: 1px solid var(--bf-line);
	display: flex;
	gap: 22px;
	flex-wrap: wrap;
}

.bf-case__metric {
	display: flex;
	flex-direction: column;
	gap: 2px;
}

.bf-case__metric b {
	font-family: var(--bf-font-display);
	font-size: 1.18rem;
	color: var(--bf-brass-bright);
	font-weight: 600;
	line-height: 1.1;
}

.bf-case__metric span {
	font-family: var(--bf-font-mono);
	font-size: 0.6rem;
	letter-spacing: 0.14em;
	text-transform: uppercase;
	color: var(--bf-text-faint);
}

.bf-certs {
	margin-top: 48px;
	padding-top: 34px;
	border-top: 1px solid var(--bf-line);
	display: grid;
	grid-template-columns: repeat(4, 1fr);
	gap: 20px;
}

.bf-cert {
	text-align: center;
	padding: 20px 12px;
	border: 1px solid var(--bf-line);
	border-radius: var(--bf-radius);
	background: var(--bf-bg-alt);
}

.bf-cert b {
	display: block;
	font-family: var(--bf-font-mono);
	font-size: 0.82rem;
	letter-spacing: 0.14em;
	color: var(--bf-brass);
	margin-bottom: 6px;
}

.bf-cert span {
	font-size: 0.76rem;
	color: var(--bf-text-faint);
	line-height: 1.5;
	display: block;
}

/* ==========================================================================
   13. Journal / post cards
   ========================================================================== */

.bf-post {
	display: flex;
	flex-direction: column;
	height: 100%;
	background: var(--bf-surface);
	border: 1px solid var(--bf-line);
	border-radius: var(--bf-radius-lg);
	overflow: hidden;
	transition: border-color 0.3s var(--bf-ease), transform 0.3s var(--bf-ease);
	position: relative;
}

.bf-post:hover {
	border-color: var(--bf-line-soft);
	transform: translateY(-4px);
}

.bf-post__media {
	aspect-ratio: 16 / 9;
	overflow: hidden;
	background: var(--bf-bg-alt);
}

.bf-post__media img {
	width: 100%;
	height: 100%;
	object-fit: cover;
	transition: transform 0.7s var(--bf-ease);
}

.bf-post:hover .bf-post__media img {
	transform: scale(1.05);
}

.bf-post__body {
	padding: 22px 24px 26px;
	display: flex;
	flex-direction: column;
	gap: 10px;
	flex: 1;
}

.bf-post__meta {
	font-family: var(--bf-font-mono);
	font-size: 0.64rem;
	letter-spacing: 0.16em;
	text-transform: uppercase;
	color: var(--bf-text-faint);
	display: flex;
	gap: 12px;
	flex-wrap: wrap;
	align-items: center;
}

.bf-post__meta a {
	color: var(--bf-brass);
}

.bf-post h3 {
	font-size: 1.08rem;
	margin: 0;
	line-height: 1.36;
}

.bf-post h3 a {
	color: var(--bf-text);
}

.bf-post h3 a:hover,
.bf-post h3 a:focus-visible {
	color: var(--bf-brass-bright);
}

.bf-post p {
	color: var(--bf-text-dim);
	font-size: 0.9rem;
	margin: 0;
}

.bf-post__more {
	margin-top: auto;
	padding-top: 14px;
}

/* ==========================================================================
   14. Inquiry section + plugin restyle
   ========================================================================== */

.bf-inquiry {
	background:
		linear-gradient(180deg, rgba(109, 69, 38, 0.16), rgba(0, 0, 0, 0)),
		var(--bf-bg-alt);
	border-top: 1px solid var(--bf-line);
}

.bf-inquiry__grid {
	display: grid;
	grid-template-columns: 0.85fr 1.15fr;
	gap: clamp(34px, 5vw, 68px);
	align-items: start;
}

.bf-inquiry__aside h2 {
	margin-bottom: 0.5em;
}

.bf-contactlist {
	list-style: none;
	margin: 30px 0 0;
	padding: 0;
	display: grid;
	gap: 16px;
}

.bf-contactlist li {
	display: flex;
	gap: 14px;
	align-items: flex-start;
	padding-bottom: 16px;
	border-bottom: 1px solid var(--bf-line);
}

.bf-contactlist li:last-child {
	border-bottom: 0;
	padding-bottom: 0;
}

.bf-contactlist svg {
	width: 18px;
	height: 18px;
	flex: none;
	color: var(--bf-brass);
	margin-top: 3px;
}

.bf-contactlist b {
	display: block;
	font-family: var(--bf-font-mono);
	font-size: 0.62rem;
	letter-spacing: 0.2em;
	text-transform: uppercase;
	color: var(--bf-text-faint);
	font-weight: 500;
	margin-bottom: 3px;
}

.bf-contactlist span,
.bf-contactlist a {
	font-size: 0.95rem;
	color: var(--bf-text);
}

.bf-contactlist a:hover,
.bf-contactlist a:focus-visible {
	color: var(--bf-brass-bright);
}

/* --- ZC inquiry plugin skin --- */
.zc-inquiry-block {
	background: var(--bf-surface);
	border: 1px solid var(--bf-line);
	border-radius: var(--bf-radius-lg);
	padding: clamp(24px, 3.4vw, 40px);
	max-width: none;
	margin: 0;
	box-shadow: var(--bf-shadow-sm);
}

.zc-inquiry-block__intro {
	margin-bottom: 26px;
	text-align: left;
}

.zc-inquiry-block__intro h2 {
	font-family: var(--bf-font-display);
	font-size: clamp(1.24rem, 2.2vw, 1.6rem);
	color: var(--bf-text);
	margin: 0 0 10px;
	text-align: left;
}

.zc-inquiry-block__intro p {
	color: var(--bf-text-dim);
	font-size: 0.94rem;
	margin: 0;
	text-align: left;
}

.zc-inquiry-form__grid {
	display: grid;
	grid-template-columns: repeat(2, minmax(0, 1fr));
	gap: 16px;
	margin-bottom: 22px;
}

.zc-inquiry-field {
	display: flex;
	flex-direction: column;
	gap: 8px;
	min-width: 0;
}

.zc-inquiry-field:has(textarea),
.zc-inquiry-field:has(.zc-file-input) {
	grid-column: 1 / -1;
}

.zc-inquiry-field label {
	font-family: var(--bf-font-mono);
	font-size: 0.64rem;
	letter-spacing: 0.18em;
	text-transform: uppercase;
	color: var(--bf-text-faint);
	font-weight: 500;
}

.zc-required {
	color: var(--bf-brass);
	margin-left: 3px;
}

.zc-inquiry-field input[type="text"],
.zc-inquiry-field input[type="email"],
.zc-inquiry-field input[type="tel"],
.zc-inquiry-field input[type="number"],
.zc-inquiry-field textarea,
.zc-inquiry-field select {
	width: 100%;
	max-width: 100%;
	background: var(--bf-bg);
	border: 1px solid var(--bf-line);
	border-radius: var(--bf-radius);
	color: var(--bf-text);
	font-family: var(--bf-font-body);
	font-size: 0.94rem;
	padding: 12px 14px;
	line-height: 1.5;
	transition: border-color 0.22s var(--bf-ease), background-color 0.22s var(--bf-ease);
	-webkit-appearance: none;
	appearance: none;
}

.zc-inquiry-field textarea {
	resize: vertical;
	min-height: 128px;
}

.zc-inquiry-field input::placeholder,
.zc-inquiry-field textarea::placeholder {
	color: var(--bf-text-faint);
	opacity: 0.75;
}

.zc-inquiry-field input:focus,
.zc-inquiry-field textarea:focus,
.zc-inquiry-field select:focus {
	outline: none;
	border-color: var(--bf-brass);
	background: var(--bf-bg-alt);
}

.zc-file-input {
	display: flex;
	align-items: center;
	gap: 12px;
	border: 1px dashed var(--bf-line);
	border-radius: var(--bf-radius);
	padding: 10px 12px;
	position: relative;
	background: var(--bf-bg);
}

.zc-file-input__button {
	font-family: var(--bf-font-mono);
	font-size: 0.66rem;
	letter-spacing: 0.14em;
	text-transform: uppercase;
	color: var(--bf-brass);
	border: 1px solid var(--bf-line-soft);
	border-radius: 2px;
	padding: 6px 12px;
	flex: none;
}

.zc-file-input__name {
	font-size: 0.84rem;
	color: var(--bf-text-faint);
	overflow: hidden;
	text-overflow: ellipsis;
	white-space: nowrap;
}

.zc-file-input__native {
	position: absolute;
	inset: 0;
	opacity: 0;
	cursor: pointer;
	width: 100%;
}

.zc-inquiry-form .zc-btn-primary {
	width: 100%;
}

.zc-inquiry-notice {
	border-radius: var(--bf-radius);
	padding: 12px 16px;
	margin-bottom: 18px;
	font-size: 0.9rem;
	border: 1px solid var(--bf-line);
	background: var(--bf-bg);
}

.zc-inquiry-notice.is-error {
	border-color: rgba(209, 97, 74, 0.5);
	color: #f0b3a5;
}

.zc-inquiry-notice.is-success {
	border-color: rgba(121, 169, 123, 0.5);
	color: #b7d8b8;
}

/* Modal */
.zc-modal {
	position: fixed;
	inset: 0;
	z-index: 200;
	display: flex;
	align-items: center;
	justify-content: center;
	padding: 20px;
}

.zc-modal[hidden] {
	display: none;
}

.zc-modal__backdrop {
	position: absolute;
	inset: 0;
	background: rgba(8, 7, 6, 0.82);
	backdrop-filter: blur(6px);
	-webkit-backdrop-filter: blur(6px);
}

.zc-modal__dialog {
	position: relative;
	width: 100%;
	max-width: 620px;
	max-height: 88vh;
	overflow-y: auto;
	background: var(--bf-surface);
	border: 1px solid var(--bf-line-soft);
	border-radius: var(--bf-radius-lg);
	box-shadow: var(--bf-shadow-lg);
}

.zc-modal__dialog .zc-inquiry-block {
	border: 0;
	box-shadow: none;
	background: transparent;
}

.zc-modal__close {
	position: absolute;
	top: 12px;
	right: 12px;
	width: 36px;
	height: 36px;
	border: 1px solid var(--bf-line);
	background: var(--bf-bg);
	color: var(--bf-text-dim);
	border-radius: var(--bf-radius);
	font-size: 20px;
	line-height: 1;
	cursor: pointer;
	z-index: 3;
	transition: color 0.2s var(--bf-ease), border-color 0.2s var(--bf-ease);
}

.zc-modal__close:hover {
	color: var(--bf-brass);
	border-color: var(--bf-brass);
}

/* ==========================================================================
   15. Page hero / breadcrumbs
   ========================================================================== */

.bf-pagehead {
	position: relative;
	padding-block: clamp(52px, 7vw, 96px);
	border-bottom: 1px solid var(--bf-line);
	background:
		radial-gradient(1100px 340px at 12% -20%, rgba(109, 69, 38, 0.3), transparent 62%),
		var(--bf-bg-alt);
	overflow: hidden;
}

.bf-pagehead__inner {
	position: relative;
	z-index: 1;
	max-width: 820px;
}

.bf-pagehead h1 {
	margin-bottom: 0.35em;
	text-wrap: balance;
}

.bf-crumbs {
	font-family: var(--bf-font-mono);
	font-size: 0.66rem;
	letter-spacing: 0.16em;
	text-transform: uppercase;
	color: var(--bf-text-faint);
	margin-bottom: 18px;
	display: flex;
	flex-wrap: wrap;
	gap: 8px;
	align-items: center;
}

.bf-crumbs a {
	color: var(--bf-text-dim);
}

.bf-crumbs a:hover {
	color: var(--bf-brass);
}

.bf-crumbs span[aria-hidden] {
	color: var(--bf-line);
}

/* ==========================================================================
   16. Single product
   ========================================================================== */

.bf-product {
	display: grid;
	grid-template-columns: 1.05fr 1fr;
	gap: clamp(32px, 4.6vw, 64px);
	align-items: start;
}

.bf-product__media {
	border: 1px solid var(--bf-line);
	border-radius: var(--bf-radius-lg);
	overflow: hidden;
	background: var(--bf-bg-alt);
	position: sticky;
	top: calc(var(--bf-header-h) + 24px);
}

.bf-product__media img {
	width: 100%;
	height: auto;
}

.bf-product__terms {
	display: flex;
	flex-wrap: wrap;
	gap: 8px;
	margin-bottom: 20px;
}

.bf-product__intro {
	color: var(--bf-text-dim);
	font-size: 1.02rem;
	line-height: 1.76;
	margin-bottom: 28px;
}

.bf-spectable {
	border: 1px solid var(--bf-line);
	border-radius: var(--bf-radius-lg);
	overflow: hidden;
	margin-bottom: 28px;
	background: var(--bf-surface);
}

.bf-spectable__head {
	padding: 14px 20px;
	border-bottom: 1px solid var(--bf-line);
	font-family: var(--bf-font-mono);
	font-size: 0.66rem;
	letter-spacing: 0.2em;
	text-transform: uppercase;
	color: var(--bf-brass);
	background: var(--bf-bg-alt);
}

.bf-spectable table {
	margin: 0;
}

.bf-spectable th,
.bf-spectable td {
	padding: 11px 20px;
	font-size: 0.88rem;
	border-bottom: 1px solid var(--bf-line);
}

.bf-spectable tr:last-child th,
.bf-spectable tr:last-child td {
	border-bottom: 0;
}

.bf-spectable th {
	width: 44%;
	color: var(--bf-text-faint);
	font-family: var(--bf-font-mono);
	font-size: 0.68rem;
	letter-spacing: 0.12em;
	text-transform: uppercase;
	font-weight: 500;
	vertical-align: top;
}

.bf-spectable td {
	color: var(--bf-text);
	font-family: var(--bf-font-mono);
	font-size: 0.84rem;
}

.bf-product__actions {
	display: flex;
	flex-wrap: wrap;
	gap: 12px;
	margin-bottom: 30px;
}

.bf-prose {
	color: var(--bf-text-dim);
	font-size: 1rem;
	line-height: 1.82;
}

.bf-prose h2,
.bf-prose h3,
.bf-prose h4 {
	color: var(--bf-text);
	margin-top: 1.9em;
}

.bf-prose h2 {
	font-size: clamp(1.3rem, 2.3vw, 1.7rem);
}

.bf-prose h3 {
	font-size: 1.16rem;
}

.bf-prose > *:first-child {
	margin-top: 0;
}

.bf-prose a {
	text-decoration: underline;
	text-underline-offset: 3px;
	text-decoration-thickness: 1px;
}

.bf-prose li {
	margin-bottom: 0.5em;
}

.bf-prose img {
	border-radius: var(--bf-radius-lg);
	border: 1px solid var(--bf-line);
}

.bf-prose table {
	display: block;
	overflow-x: auto;
	white-space: nowrap;
}

/* ==========================================================================
   17. Archive toolbar / filters / pagination
   ========================================================================== */

.bf-filters {
	display: flex;
	flex-wrap: wrap;
	gap: 8px;
	margin-bottom: 40px;
	padding-bottom: 26px;
	border-bottom: 1px solid var(--bf-line);
}

.bf-filter {
	display: inline-block;
	padding: 8px 16px;
	border: 1px solid var(--bf-line);
	border-radius: 2px;
	font-family: var(--bf-font-mono);
	font-size: 0.68rem;
	letter-spacing: 0.14em;
	text-transform: uppercase;
	color: var(--bf-text-dim);
	background: var(--bf-surface);
	transition: color 0.22s var(--bf-ease), border-color 0.22s var(--bf-ease);
}

.bf-filter:hover,
.bf-filter:focus-visible,
.bf-filter.is-active {
	color: var(--bf-brass-bright);
	border-color: var(--bf-line-soft);
}

.bf-filter.is-active {
	background: var(--bf-surface-2);
}

.bf-pagination {
	margin-top: 56px;
	padding-top: 30px;
	border-top: 1px solid var(--bf-line);
	display: flex;
	justify-content: center;
}

.bf-pagination .nav-links,
.bf-pagination .page-numbers {
	display: flex;
	flex-wrap: wrap;
	gap: 8px;
	list-style: none;
	margin: 0;
	padding: 0;
	align-items: center;
}

.bf-pagination a.page-numbers,
.bf-pagination span.page-numbers {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	min-width: 40px;
	height: 40px;
	padding: 0 12px;
	border: 1px solid var(--bf-line);
	border-radius: var(--bf-radius);
	font-family: var(--bf-font-mono);
	font-size: 0.8rem;
	color: var(--bf-text-dim);
	background: var(--bf-surface);
}

.bf-pagination a.page-numbers:hover {
	color: var(--bf-brass-bright);
	border-color: var(--bf-line-soft);
}

.bf-pagination .page-numbers.current {
	background: var(--bf-brass);
	border-color: var(--bf-brass);
	color: #14100a;
}

/* ==========================================================================
   18. Search form / 404
   ========================================================================== */

.bf-search {
	display: flex;
	gap: 10px;
	max-width: 520px;
	width: 100%;
}

.bf-search__field {
	flex: 1 1 auto;
	min-width: 0;
	background: var(--bf-bg);
	border: 1px solid var(--bf-line);
	border-radius: var(--bf-radius);
	color: var(--bf-text);
	font-family: var(--bf-font-body);
	font-size: 0.94rem;
	padding: 12px 14px;
	-webkit-appearance: none;
	appearance: none;
}

.bf-search__field:focus {
	outline: none;
	border-color: var(--bf-brass);
}

.bf-search__field::placeholder {
	color: var(--bf-text-faint);
}

.bf-404 {
	text-align: center;
	padding-block: clamp(70px, 10vw, 140px);
}

.bf-404__code {
	font-family: var(--bf-font-mono);
	font-size: clamp(4rem, 14vw, 9rem);
	line-height: 1;
	color: var(--bf-surface-2);
	letter-spacing: -0.04em;
	margin: 0 0 10px;
	font-weight: 600;
	-webkit-text-stroke: 1px var(--bf-line-soft);
}

.bf-404 .bf-search {
	margin-inline: auto;
	margin-top: 30px;
}

.bf-404__links {
	margin-top: 40px;
	display: flex;
	flex-wrap: wrap;
	gap: 12px;
	justify-content: center;
}

.bf-empty {
	border: 1px dashed var(--bf-line);
	border-radius: var(--bf-radius-lg);
	padding: 48px 30px;
	text-align: center;
	color: var(--bf-text-dim);
	background: var(--bf-surface);
}

/* ==========================================================================
   19. Single post extras
   ========================================================================== */

.bf-postmeta {
	display: flex;
	flex-wrap: wrap;
	gap: 10px 20px;
	font-family: var(--bf-font-mono);
	font-size: 0.68rem;
	letter-spacing: 0.16em;
	text-transform: uppercase;
	color: var(--bf-text-faint);
	margin-bottom: 6px;
}

.bf-featured {
	border-radius: var(--bf-radius-lg);
	overflow: hidden;
	border: 1px solid var(--bf-line);
	margin-bottom: clamp(30px, 4vw, 52px);
	background: var(--bf-bg-alt);
}

.bf-featured img {
	width: 100%;
	height: auto;
}

.bf-entryfoot {
	margin-top: 52px;
	padding-top: 28px;
	border-top: 1px solid var(--bf-line);
	display: flex;
	flex-wrap: wrap;
	gap: 18px;
	justify-content: space-between;
	align-items: center;
}

.bf-tags {
	display: flex;
	flex-wrap: wrap;
	gap: 8px;
}

.bf-postnav {
	margin-top: 40px;
	display: grid;
	grid-template-columns: repeat(2, minmax(0, 1fr));
	gap: 16px;
}

.bf-postnav a {
	display: block;
	padding: 20px 22px;
	border: 1px solid var(--bf-line);
	border-radius: var(--bf-radius-lg);
	background: var(--bf-surface);
	color: var(--bf-text);
	transition: border-color 0.24s var(--bf-ease);
}

.bf-postnav a:hover {
	border-color: var(--bf-line-soft);
	color: var(--bf-brass-bright);
}

.bf-postnav b {
	display: block;
	font-family: var(--bf-font-mono);
	font-size: 0.62rem;
	letter-spacing: 0.2em;
	text-transform: uppercase;
	color: var(--bf-text-faint);
	margin-bottom: 8px;
	font-weight: 500;
}

.bf-postnav .is-next {
	text-align: right;
}

/* Comments */
.bf-comments {
	margin-top: 60px;
	padding-top: 34px;
	border-top: 1px solid var(--bf-line);
}

.bf-comments ol {
	list-style: none;
	padding: 0;
	margin: 0;
}

.bf-comments .comment-body {
	border: 1px solid var(--bf-line);
	border-radius: var(--bf-radius-lg);
	background: var(--bf-surface);
	padding: 22px;
	margin-bottom: 16px;
}

.bf-comments .children {
	list-style: none;
	padding-left: clamp(12px, 3vw, 40px);
}

.bf-comments input[type="text"],
.bf-comments input[type="email"],
.bf-comments input[type="url"],
.bf-comments textarea {
	width: 100%;
	max-width: 100%;
	background: var(--bf-bg);
	border: 1px solid var(--bf-line);
	border-radius: var(--bf-radius);
	color: var(--bf-text);
	padding: 12px 14px;
	font-family: var(--bf-font-body);
	font-size: 0.94rem;
}

.bf-comments .submit {
	background: var(--bf-brass);
	color: #14100a;
	border: 0;
	border-radius: var(--bf-radius);
	padding: 13px 26px;
	font-weight: 600;
	letter-spacing: 0.08em;
	text-transform: uppercase;
	font-size: 0.82rem;
	cursor: pointer;
}

/* ==========================================================================
   20. Footer
   ========================================================================== */

.bf-footer {
	background: #0f0d0c;
	border-top: 1px solid var(--bf-line);
	padding-top: clamp(52px, 6vw, 78px);
}

.bf-footer__grid {
	display: grid;
	grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
	gap: clamp(28px, 4vw, 54px);
	padding-bottom: 48px;
}

.bf-footer__about p {
	color: var(--bf-text-faint);
	font-size: 0.9rem;
	line-height: 1.72;
	margin: 18px 0 0;
	max-width: 38ch;
}

.bf-footer h4 {
	font-family: var(--bf-font-mono);
	font-size: 0.66rem;
	letter-spacing: 0.2em;
	text-transform: uppercase;
	color: var(--bf-brass);
	margin: 0 0 18px;
	font-weight: 500;
}

.bf-footer ul {
	list-style: none;
	margin: 0;
	padding: 0;
	display: grid;
	gap: 10px;
}

.bf-footer li a,
.bf-footer__contact li {
	color: var(--bf-text-dim);
	font-size: 0.9rem;
}

.bf-footer li a:hover,
.bf-footer li a:focus-visible {
	color: var(--bf-brass-bright);
}

.bf-footer__contact li {
	display: flex;
	gap: 10px;
	align-items: flex-start;
	line-height: 1.6;
}

.bf-footer__contact svg {
	width: 15px;
	height: 15px;
	flex: none;
	margin-top: 4px;
	color: var(--bf-brass);
}

.bf-footer__bar {
	border-top: 1px solid var(--bf-line);
	padding-block: 24px;
	display: flex;
	flex-wrap: wrap;
	gap: 14px 26px;
	justify-content: space-between;
	align-items: center;
	font-family: var(--bf-font-mono);
	font-size: 0.68rem;
	letter-spacing: 0.1em;
	color: var(--bf-text-faint);
}

.bf-footer__bar a {
	color: var(--bf-text-faint);
}

.bf-footer__bar a:hover {
	color: var(--bf-brass);
}

.bf-tofop {
	position: fixed;
	right: 22px;
	bottom: 22px;
	width: 44px;
	height: 44px;
	border-radius: 50%;
	border: 1px solid var(--bf-line-soft);
	background: rgba(31, 27, 24, 0.92);
	color: var(--bf-brass);
	display: grid;
	place-items: center;
	cursor: pointer;
	opacity: 0;
	visibility: hidden;
	transform: translateY(10px);
	transition: opacity 0.3s var(--bf-ease), transform 0.3s var(--bf-ease), visibility 0.3s;
	z-index: 80;
	backdrop-filter: blur(8px);
	-webkit-backdrop-filter: blur(8px);
}

.bf-tofop.is-on {
	opacity: 1;
	visibility: visible;
	transform: translateY(0);
}

.bf-tofop svg {
	width: 16px;
	height: 16px;
}

/* ==========================================================================
   21. Scroll reveal animation
   ========================================================================== */

/*
 * Reveal states are only armed when the inline bootstrap script in header.php
 * adds `.bf-anim` to <html>. That means no-JS, prerender and headless clients
 * that never receive an IntersectionObserver callback still render everything
 * fully opaque. main.js additionally force-reveals anything left over.
 *
 * Every variant is written `:not(.is-in)` so the revealed state can never be
 * beaten on source order by a later rule, including inside a media query.
 */
.bf-anim [data-bf-reveal]:not(.is-in) {
	opacity: 0;
	transform: translate3d(0, 20px, 0);
	will-change: opacity, transform;
}

.bf-anim [data-bf-reveal="left"]:not(.is-in) {
	transform: translate3d(-22px, 0, 0);
}

.bf-anim [data-bf-reveal="right"]:not(.is-in) {
	transform: translate3d(22px, 0, 0);
}

.bf-anim [data-bf-reveal="fade"]:not(.is-in) {
	transform: none;
}

.bf-anim [data-bf-reveal="scale"]:not(.is-in) {
	transform: scale(0.985);
}

.bf-anim [data-bf-reveal] {
	transition: opacity 0.72s var(--bf-ease), transform 0.72s var(--bf-ease);
	transition-delay: var(--bf-delay, 0ms);
}

.bf-anim [data-bf-reveal].is-in {
	opacity: 1;
	transform: none;
	will-change: auto;
}

@media (prefers-reduced-motion: reduce) {
	html {
		scroll-behavior: auto;
	}

	.bf-anim [data-bf-reveal],
	.bf-anim [data-bf-reveal]:not(.is-in) {
		opacity: 1 !important;
		transform: none !important;
		transition: none !important;
	}

	*,
	*::before,
	*::after {
		animation-duration: 0.001ms !important;
		animation-iteration-count: 1 !important;
		transition-duration: 0.001ms !important;
		scroll-behavior: auto !important;
	}
}

/* ==========================================================================
   22. WordPress core classes
   ========================================================================== */

.alignleft {
	float: left;
	margin: 0.4em 1.6em 1em 0;
}

.alignright {
	float: right;
	margin: 0.4em 0 1em 1.6em;
}

.aligncenter {
	margin-inline: auto;
	display: block;
}

.alignwide,
.alignfull {
	max-width: 100%;
}

.wp-caption {
	max-width: 100%;
}

.wp-caption-text {
	color: var(--bf-text-faint);
	font-size: 0.84rem;
}

.sticky .bf-post {
	border-color: var(--bf-line-soft);
}

.bypostauthor > .comment-body {
	border-color: var(--bf-line-soft);
}

.gallery {
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 14px;
}

.gallery-item {
	margin: 0 !important;
	width: auto !important;
}

/* ==========================================================================
   23. Responsive — 1024 / 768 / 480
   ========================================================================== */

@media (max-width: 1200px) {
	:root {
		--bf-gutter: 26px;
	}

	.bf-footer__grid {
		grid-template-columns: 1.4fr 1fr 1.2fr;
	}

	.bf-footer__about {
		grid-column: 1 / -1;
	}
}

@media (max-width: 1024px) {
	.bf-grid--4 {
		grid-template-columns: repeat(2, minmax(0, 1fr));
	}

	.bf-grid--3 {
		grid-template-columns: repeat(2, minmax(0, 1fr));
	}

	.bf-split,
	.bf-product,
	.bf-inquiry__grid {
		grid-template-columns: 1fr;
	}

	.bf-split--reverse .bf-split__media {
		order: 0;
	}

	.bf-product__media {
		position: static;
	}

	.bf-certs {
		grid-template-columns: repeat(2, 1fr);
	}

	.bf-stats__grid {
		grid-template-columns: repeat(2, 1fr);
	}

	.bf-stat:nth-child(2n) {
		border-right: 0;
	}

	.bf-stat:nth-child(-n + 2) {
		border-bottom: 1px solid var(--bf-line);
	}

	/*
	 * Sideways reveal offsets push a full-width column past the right edge once
	 * the split layouts stack. These become a vertical rise instead, which
	 * reads better on narrow viewports and keeps scrollWidth == innerWidth.
	 */
	.bf-anim [data-bf-reveal="left"]:not(.is-in),
	.bf-anim [data-bf-reveal="right"]:not(.is-in) {
		transform: translate3d(0, 18px, 0);
	}
}

@media (max-width: 900px) {
	.bf-header__cta {
		display: none;
	}

	.bf-navtoggle {
		display: block;
		order: 3;
	}

	/*
	 * The closed panel stays inside the viewport box. Parking it off-canvas
	 * with translateX(100%) doubles document.scrollWidth on phones even when
	 * body overflow is hidden, so it fades and drops in instead.
	 */
	.bf-nav {
		position: fixed;
		inset: var(--bf-header-h) 0 0 0;
		background: var(--bf-bg);
		border-top: 1px solid var(--bf-line);
		padding: 26px var(--bf-gutter) 48px;
		overflow-y: auto;
		overflow-x: hidden;
		opacity: 0;
		transform: translate3d(0, -10px, 0);
		transition: opacity 0.26s var(--bf-ease), transform 0.26s var(--bf-ease), visibility 0.26s;
		margin-left: 0;
		z-index: 95;
		visibility: hidden;
	}

	.bf-nav.is-open {
		opacity: 1;
		transform: none;
		visibility: visible;
	}

	.bf-nav ul {
		flex-direction: column;
		align-items: stretch;
		gap: 0;
	}

	.bf-nav > div > ul > li {
		border-bottom: 1px solid var(--bf-line);
	}

	.bf-nav a {
		padding: 16px 4px;
		font-size: 1rem;
		border-radius: 0;
	}

	.bf-nav ul ul {
		position: static;
		opacity: 1;
		visibility: visible;
		transform: none;
		box-shadow: none;
		border: 0;
		background: transparent;
		padding: 0 0 10px 16px;
		min-width: 0;
	}

	.bf-nav ul ul a {
		padding: 10px 4px;
		font-size: 0.9rem;
		color: var(--bf-text-faint);
	}

	.bf-nav__cta {
		margin-top: 26px;
		display: block;
	}

	.bf-nav__cta .bf-btn {
		width: 100%;
	}
}

@media (max-width: 768px) {
	:root {
		--bf-gutter: 20px;
	}

	body {
		font-size: 15.5px;
	}

	.bf-hero {
		min-height: 0;
	}

	.bf-hero__inner {
		padding-block: 76px 60px;
	}

	.bf-postnav {
		grid-template-columns: 1fr;
	}

	.bf-postnav .is-next {
		text-align: left;
	}

	.bf-inquiry__grid {
		gap: 34px;
	}

	.bf-section-head--split {
		align-items: flex-start;
	}

	.gallery {
		grid-template-columns: repeat(2, 1fr);
	}
}

@media (max-width: 620px) {
	.bf-grid--4,
	.bf-grid--3,
	.bf-grid--2 {
		grid-template-columns: minmax(0, 1fr);
	}

	.bf-certs {
		grid-template-columns: 1fr;
	}

	.zc-inquiry-form__grid {
		grid-template-columns: minmax(0, 1fr);
	}

	.bf-hero__actions .bf-btn,
	.bf-product__actions .bf-btn,
	.bf-ctacard__actions .bf-btn,
	.bf-product__actions .zc-btn {
		width: 100%;
	}

	.bf-stats__grid {
		grid-template-columns: 1fr;
	}

	.bf-stat {
		border-right: 0;
		border-bottom: 1px solid var(--bf-line);
	}

	.bf-stat:last-child {
		border-bottom: 0;
	}

	.bf-footer__grid {
		grid-template-columns: 1fr;
	}

	.bf-space {
		min-height: 280px;
	}

	.alignleft,
	.alignright {
		float: none;
		margin: 1.4em 0;
	}

	.bf-tofop {
		right: 14px;
		bottom: 14px;
	}
}

@media (max-width: 400px) {
	.bf-brand__tag {
		display: none;
	}

	/*
	 * "QUIETFORM ACOUSTICS" set uppercase at 1.02rem is wider than the
	 * space left once the 44px nav toggle and its gap are subtracted from
	 * a 320-360px viewport, which pushed the toggle off the right edge.
	 * Letting the brand block shrink and its name wrap to two short lines
	 * keeps everything inside the viewport without touching wider layouts.
	 */
	.bf-header__inner {
		gap: 14px;
	}

	.bf-brand {
		flex: 1 1 auto;
		min-width: 0;
	}

	.bf-brand__text {
		min-width: 0;
	}

	.bf-brand__name {
		white-space: normal;
		overflow-wrap: break-word;
	}

	.bf-hero__meta {
		gap: 10px 18px;
		font-size: 0.66rem;
	}

	.gallery {
		grid-template-columns: 1fr;
	}
}