:root,
[data-image-background="light"] {
    --kf-header-h: 76px;
    color-scheme: light;
    --font-heading: "Avenir Next", Avenir, "Helvetica Neue", Helvetica, sans-serif;
    --font-body: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --font-mono: ui-monospace, SFMono-Regular, Menlo, monospace;
    --text-micro: 0.75rem;
    --text-small: 0.875rem;
    --text-body: 1rem;
    --text-lead: clamp(1.125rem, 1.4vw, 1.25rem);
    --text-h3: clamp(1.25rem, 1.8vw, 1.5rem);
    --text-h2: clamp(1.75rem, 2.6vw, 2.25rem);
    --text-h1: clamp(2rem, 3.2vw, 3rem);
    --text-display: var(--text-h1);
    --text-price: 2rem;
    --space-1: 8px;
    --space-2: 16px;
    --space-3: 24px;
    --space-4: 32px;
    --space-5: 48px;
    --space-6: 64px;
    --space-8: 88px;
    --space-12: 120px;
    --container-max: 1240px;
    --brand-blue: #005078;
    --brand-blue-hover: #006088;
    --brand-blue-mid: #3080A8;
    --brand-sky: #70C0E8;
    --brand-ink: #101010;
    --brand-muted: #5A6468;
    --metal: #788080;
    --graphite: #303030;
    --bg: #F5F8FA;
    --surface: #FFFFFF;
    --surface-soft: #EAF0F4;
    --ink: #101010;
    --muted: #5A6468;
    --text-primary: rgba(16, 16, 16, 0.92);
    --text-secondary: rgba(16, 16, 16, 0.72);
    --text-tertiary: rgba(16, 16, 16, 0.56);
    --text-disabled: rgba(16, 16, 16, 0.38);
    --line: rgba(120, 128, 128, 0.26);
    --line-strong: #788080;
    --accent: #005078;
    --accent-hover: #006088;
    --accent-strong: var(--accent-hover);
    --accent-soft: #E4EFF5;
    --on-accent: #FFFFFF;
    --success: #006088;
    --warning: #788080;
    --focus: #3080A8;
    --glow: rgba(112, 192, 232, 0.45);
    --glass-bg: rgba(200, 226, 242, 0.11);
    --glass-edge: rgba(255, 255, 255, 0.16);
    --glass-blur: blur(18px) saturate(160%);
    --glass-blur-mobile: blur(10px) saturate(140%);
    --glass-shadow: 0 12px 30px -14px rgba(0, 0, 0, 0.75);
    --shine-alpha: 0.5;
    --elev-1: 0 1px 2px rgba(14, 27, 31, 0.05);
    --elev-2: 0 1px 2px rgba(14, 27, 31, 0.05), 0 8px 20px -8px rgba(14, 27, 31, 0.10);
    --elev-3: 0 2px 4px rgba(14, 27, 31, 0.06), 0 16px 32px -12px rgba(14, 27, 31, 0.16);
    --shadow-soft: var(--elev-2);
    --radius-control: 8px;
    --radius-card: 12px;
    --radius-section: 16px;
    --ease-precision: cubic-bezier(0.2, 0.6, 0.3, 1);
}

.section--dark,
.section--deep,
[data-image-background="dark"] {
    color-scheme: dark;
    --bg: #0B1218;
    --surface: #131C24;
    --surface-soft: #0F1720;
    --ink: #E8EFF3;
    --muted: #9AA6AC;
    --text-primary: rgba(232, 239, 243, 0.92);
    --text-secondary: rgba(232, 239, 243, 0.72);
    --text-tertiary: rgba(232, 239, 243, 0.56);
    --text-disabled: rgba(232, 239, 243, 0.38);
    --line: rgba(154, 166, 172, 0.24);
    --line-strong: #788080;
    --accent: #70C0E8;
    --accent-hover: #9FD6F2;
    --accent-strong: var(--accent-hover);
    --accent-soft: #0E2A38;
    --on-accent: #062028;
    --success: #70C0E8;
    --warning: #9AA6AC;
    --focus: #70C0E8;
    --glow: rgba(112, 192, 232, 0.55);
    --shine-alpha: 0.55;
    --elev-1: 0 1px 2px rgba(0, 0, 0, 0.30);
    --elev-2: 0 1px 2px rgba(0, 0, 0, 0.34), 0 8px 20px -8px rgba(0, 0, 0, 0.52);
    --elev-3: 0 2px 4px rgba(0, 0, 0, 0.38), 0 16px 32px -12px rgba(0, 0, 0, 0.64);
    --shadow-soft: var(--elev-2);
    background: var(--bg);
    color: var(--ink);
}

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

html,
body {
    overflow-x: clip;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: var(--text-body);
    line-height: 1.65;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
}

body,
button,
input,
select,
textarea {
    font-family: var(--font-body);
}

h1,
h2,
h3,
h4,
p,
ul,
ol,
figure {
    margin-top: 0;
}

h1,
h2,
h3,
h4 {
    color: var(--ink);
    font-family: var(--font-heading);
    font-weight: 600;
    letter-spacing: -0.035em;
    line-height: 1.08;
}

h1 {
    font-size: var(--text-h1);
}

h2 {
    font-size: var(--text-h2);
}

h3 {
    font-size: var(--text-h3);
}

a {
    color: inherit;
    text-decoration-thickness: 1px;
    text-underline-offset: 0.22em;
}

button,
input,
select,
textarea,
a {
    border-radius: 0;
}

:where(a, button, input, select, textarea, summary, [tabindex]):focus-visible {
    outline: 3px solid var(--focus);
    outline-offset: 3px;
}

button,
select,
input[type="checkbox"],
input[type="radio"] {
    cursor: pointer;
}

button:disabled,
select:disabled,
textarea:disabled,
input:disabled {
    cursor: not-allowed;
    opacity: 0.55;
}

[hidden] {
    display: none !important;
}

.kf-container {
    width: min(calc(100% - 48px), var(--container-max));
    margin-inline: auto;
}

.kf-skip-link {
    position: fixed;
    z-index: 1000;
    top: 12px;
    left: 12px;
    padding: 10px 16px;
    transform: translateY(-160%);
    background: var(--ink);
    color: var(--bg);
}

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

html {
    scroll-padding-top: calc(var(--kf-header-h) + 16px);
}

.kf-header {
    position: sticky;
    z-index: 50;
    top: 0;
    border-bottom: 1px solid transparent;
    background: var(--bg);
    box-shadow: var(--elev-1);
    color: var(--ink);
    transition: background-color 150ms var(--ease-precision), border-color 150ms var(--ease-precision), color 150ms var(--ease-precision);
}

.kf-header--dark:not(.is-scrolled),
.kf-header.is-over-dark {
    color-scheme: dark;
    --bg: #0B1218;
    --surface: #131C24;
    --surface-soft: #0F1720;
    --ink: #E8EFF3;
    --muted: #9AA6AC;
    --text-primary: rgba(232, 239, 243, 0.92);
    --text-secondary: rgba(232, 239, 243, 0.72);
    --text-tertiary: rgba(232, 239, 243, 0.56);
    --text-disabled: rgba(232, 239, 243, 0.38);
    --line: rgba(154, 166, 172, 0.24);
    --line-strong: #788080;
    --accent: #70C0E8;
    --accent-hover: #9FD6F2;
    --accent-strong: var(--accent-hover);
    --accent-soft: #0E2A38;
    --on-accent: #062028;
    --focus: #70C0E8;
    --shine-alpha: 0.55;
    background: var(--bg);
}

.kf-header.is-scrolled.is-over-dark {
    border-bottom-color: var(--glass-edge);
    background: var(--glass-bg);
    box-shadow: var(--glass-shadow);
    -webkit-backdrop-filter: var(--glass-blur);
    backdrop-filter: var(--glass-blur);
}

.kf-header__inner {
    position: relative;
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto auto;
    align-items: center;
    min-height: 76px;
    gap: 32px;
}

.kf-brand {
    display: inline-flex;
    align-items: center;
    gap: 11px;
    color: var(--ink);
    font-family: "Avenir Next", Avenir, sans-serif;
    font-size: var(--text-small);
    font-weight: 700;
    letter-spacing: 0.14em;
    text-decoration: none;
    white-space: nowrap;
}

.kf-brand__logo {
    display: block;
    width: 77px;
    height: 40px;
    aspect-ratio: 1.92 / 1;
    object-fit: contain;
}

.kf-nav {
    justify-self: end;
}

.kf-menu-toggle {
    display: none;
}

.kf-nav__list {
    display: flex;
    align-items: center;
    gap: 28px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.kf-nav a {
    color: var(--muted);
    font-size: var(--text-small);
    font-weight: 600;
    text-decoration: none;
}

.kf-nav details {
    position: relative;
}

.kf-nav summary {
    min-height: 44px;
    align-content: center;
    color: var(--muted);
    cursor: pointer;
    font-size: var(--text-small);
    font-weight: 600;
    list-style: none;
}

.kf-nav summary::-webkit-details-marker {
    display: none;
}

.kf-nav summary::after {
    display: inline-block;
    margin-left: 7px;
    content: "+";
    font-weight: 400;
}

.kf-nav details[open] summary::after {
    content: "−";
}

.kf-nav__submenu {
    position: absolute;
    top: calc(100% + 10px);
    left: 50%;
    display: grid;
    width: 270px;
    padding: 12px;
    border: 0;
    border-radius: var(--radius-card);
    background: var(--surface);
    box-shadow: var(--shadow-soft);
    transform: translateX(-50%);
}

.kf-nav__submenu a {
    min-height: 42px;
    align-content: center;
    padding: 8px 10px;
}

.kf-nav__submenu a:hover {
    background: var(--surface-soft);
}

.kf-nav__all {
    margin-bottom: 6px;
    border-bottom: 0;
    color: var(--ink) !important;
}

.kf-nav__mobile-quote {
    display: none;
}

.kf-nav a:hover {
    color: var(--ink);
}

.kf-nav {
    transition: opacity 150ms var(--ease-precision);
}

.kf-header.kf-search-open .kf-nav {
    visibility: hidden;
    pointer-events: none;
    opacity: 0;
}

.kf-site-search {
    position: relative;
    z-index: 60;
    display: flex;
    width: 44px;
    min-width: 44px;
    justify-content: flex-end;
    transition: width 180ms var(--ease-precision);
}

.kf-site-search.is-open {
    width: clamp(280px, 32vw, 390px);
}

.kf-search-toggle,
.kf-search-close {
    display: inline-grid;
    width: 44px;
    min-width: 44px;
    min-height: 44px;
    place-items: center;
    padding: 0;
    border: 0;
    border-radius: var(--radius-control);
    background: transparent;
    color: currentcolor;
}

.kf-search-toggle:hover,
.kf-search-close:hover {
    background: var(--surface-soft);
}

.kf-search-toggle svg,
.kf-search-close svg,
.kf-site-search__form > svg {
    width: 20px;
    height: 20px;
    fill: none;
    stroke: currentcolor;
    stroke-linecap: round;
    stroke-width: 1.8;
}

.kf-site-search.is-open > .kf-search-toggle {
    display: none;
}

.kf-site-search__shell {
    position: relative;
    width: 100%;
}

.kf-site-search__form {
    display: flex;
    min-height: 44px;
    align-items: center;
    gap: 10px;
    padding-left: 14px;
    border: 1px solid var(--line);
    border-radius: var(--radius-control);
    background: var(--surface);
    box-shadow: var(--elev-1);
    color: var(--ink);
}

.kf-site-search__form input[type="search"] {
    width: 100%;
    min-width: 0;
    min-height: 42px;
    padding: 0;
    border: 0;
    border-radius: 0;
    outline: 0;
    background: transparent;
    color: var(--ink);
    font-size: var(--text-small);
}

.kf-site-search__form input[type="search"]::placeholder {
    color: var(--text-tertiary);
}

.kf-site-search__form input[type="search"]::-webkit-search-cancel-button {
    display: none;
}

.kf-site-search__form:focus-within {
    border-color: var(--focus);
    outline: 3px solid var(--focus);
    outline-offset: 2px;
}

.kf-site-search__form input[type="search"]:focus-visible {
    outline: 0;
}

.kf-site-search__panel {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    width: min(520px, calc(100vw - 48px));
    max-height: min(620px, calc(100dvh - var(--kf-header-h) - 24px));
    overflow-x: hidden;
    overflow-y: auto;
    padding: 8px;
    border: 0;
    border-radius: var(--radius-card);
    background: var(--surface);
    box-shadow: var(--elev-3);
    color: var(--ink);
}

.kf-site-search__status {
    margin: 0;
    padding: 8px 10px 4px;
    color: var(--text-secondary);
    font-size: var(--text-micro);
}

.kf-site-search__listbox {
    display: grid;
    gap: 4px;
}

.kf-site-search__group,
.kf-site-search__all-group {
    display: grid;
    gap: 2px;
    padding-top: 8px;
}

.kf-site-search__group + .kf-site-search__group,
.kf-site-search__all-group {
    margin-top: 6px;
    border-top: 1px solid var(--line);
}

.kf-site-search__group-title {
    margin: 0;
    padding: 3px 10px 5px;
    color: var(--text-tertiary);
    font-size: var(--text-micro);
    font-weight: 800;
    letter-spacing: 0.1em;
    line-height: 1.3;
    text-transform: uppercase;
}

.kf-site-search__option {
    display: grid;
    min-width: 0;
    min-height: 44px;
    align-content: center;
    gap: 1px;
    padding: 8px 10px;
    border-radius: var(--radius-control);
    color: var(--text-primary);
    font-size: var(--text-small);
    font-weight: 600;
    line-height: 1.35;
    text-decoration: none;
    overflow-wrap: anywhere;
}

.kf-site-search__option small {
    overflow: hidden;
    color: var(--text-secondary);
    font-size: var(--text-micro);
    font-weight: 500;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.kf-site-search__option:hover,
.kf-site-search__option.is-active {
    background: var(--surface-soft);
    color: var(--ink);
}

.kf-site-search__option--product > span {
    font-family: var(--font-mono);
    font-variant-numeric: tabular-nums;
}

.kf-site-search__option--all {
    color: var(--accent);
    font-weight: 700;
}

.kf-button {
    display: inline-flex;
    min-height: 48px;
    align-items: center;
    justify-content: center;
    padding: 12px 22px;
    border: 0;
    border-radius: var(--radius-control);
    background: var(--accent);
    color: var(--on-accent);
    font-size: var(--text-small);
    font-weight: 700;
    line-height: 1.2;
    text-align: center;
    text-decoration: none;
    box-shadow: var(--elev-1);
    transition: background-color 150ms var(--ease-precision), box-shadow 150ms var(--ease-precision), color 150ms var(--ease-precision), transform 180ms var(--ease-precision);
}

.kf-button--shine {
    position: relative;
    overflow: hidden;
    isolation: isolate;
}

.kf-button--shine::before {
    position: absolute;
    z-index: -1;
    inset: 0;
    background: linear-gradient(105deg, transparent 30%, rgba(255, 255, 255, var(--shine-alpha)) 48%, transparent 66%);
    content: "";
    transform: translateX(-120%);
    transition: transform 550ms cubic-bezier(0.3, 0.7, 0.3, 1);
}

.kf-button--shine:hover::before {
    transform: translateX(120%);
}

.kf-button:hover {
    background: var(--accent-strong);
    box-shadow: var(--elev-2);
}

.kf-button:active {
    box-shadow: var(--elev-1);
    transform: translateY(1px);
}

.kf-button--secondary {
    background: var(--surface-soft);
    color: var(--ink);
}

.kf-button--secondary:hover {
    background: var(--surface);
    color: var(--ink);
    transform: translateY(-2px);
}

.kf-button--secondary:active {
    box-shadow: var(--elev-1);
    transform: translateY(1px);
}

.kf-button--light {
    border-color: var(--ink);
    background: var(--ink);
    color: var(--bg);
}

.kf-button--small {
    min-height: 40px;
    padding: 9px 17px;
    font-size: var(--text-small);
}

.kf-text-button {
    padding: 0;
    border: 0;
    background: transparent;
    color: inherit;
    font-size: inherit;
    text-decoration: underline;
    text-underline-offset: 0.22em;
}

.kf-button-row,
.kf-order-panel__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.kf-card {
    padding: var(--space-3);
    border: 0;
    border-radius: var(--radius-card);
    background: var(--surface);
    box-shadow: var(--elev-1);
}

.kf-pagination {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-1);
    margin-block: var(--space-5);
}

.kf-pagination :where(a, button, span) {
    display: inline-grid;
    min-width: 44px;
    min-height: 44px;
    place-content: center;
    padding: 8px 12px;
    border: 0;
    border-radius: var(--radius-control);
    background: var(--surface);
    box-shadow: var(--elev-1);
    color: var(--ink);
    text-decoration: none;
}

.kf-pagination [aria-current="page"] {
    background: var(--accent);
    color: var(--on-accent);
    font-weight: 700;
}

.kf-eyebrow {
    margin-bottom: 16px;
    color: var(--accent);
    font-size: var(--text-micro);
    font-weight: 800;
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

.kf-breadcrumbs {
    padding-block: 22px;
    color: var(--muted);
    font-size: var(--text-small);
}

.kf-breadcrumbs ol {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.kf-breadcrumbs li:not(:last-child)::after {
    margin-left: 8px;
    color: var(--line-strong);
    content: "/";
}

.kf-breadcrumbs a {
    text-decoration: none;
}

.kf-product-hero {
    padding: 12px 0 96px;
}

.kf-product-page {
    animation: none;
}

.kf-product-hero__grid {
    display: grid;
    grid-template-columns: minmax(0, 1.12fr) minmax(400px, 0.88fr);
    align-items: start;
    gap: clamp(48px, 6vw, 88px);
}

.kf-gallery {
    min-width: 0;
    position: sticky;
    /* 页头为 sticky top:0，此处须让开其高度，否则滚动时图库顶部被遮挡 */
    top: calc(var(--kf-header-h) + 24px);
}

.kf-gallery__stage {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-card);
    box-shadow: var(--elev-3);
}

.kf-placeholder {
    display: grid;
    min-height: 180px;
    place-content: center;
    border: 0;
    background: var(--surface-soft);
    color: var(--ink);
    text-align: center;
    transition: background-color 150ms var(--ease-precision), color 150ms var(--ease-precision);
}

.kf-placeholder--hero {
    aspect-ratio: 4 / 3;
    min-height: 0;
    padding: 40px;
    border-radius: inherit;
    box-shadow: none;
}

.kf-placeholder.is-lit {
    background: radial-gradient(circle at 50% 42%, var(--glow), transparent 40%), var(--surface);
    color: var(--ink);
}

.kf-placeholder strong {
    display: block;
    margin-block: 10px;
    font-family: "Avenir Next", Avenir, sans-serif;
    font-size: var(--text-h2);
    font-weight: 600;
    letter-spacing: -0.045em;
}

.kf-placeholder__eyebrow {
    font-size: var(--text-micro);
    font-weight: 800;
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

.kf-gallery__light-toggle {
    position: absolute;
    right: 18px;
    bottom: 18px;
    display: flex;
    align-items: center;
    gap: 9px;
    padding: 10px 14px;
    border: 1px solid var(--glass-edge);
    border-radius: var(--radius-control);
    background: var(--glass-bg);
    color: var(--ink);
    box-shadow: var(--glass-shadow);
    -webkit-backdrop-filter: var(--glass-blur);
    backdrop-filter: var(--glass-blur);
}

.kf-gallery__light-toggle span {
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: var(--metal);
}

.kf-gallery__light-toggle[aria-pressed="true"] span {
    background: var(--accent);
    box-shadow: 0 0 0 5px rgba(112, 192, 232, 0.18);
}

.kf-gallery__price-card {
    position: absolute;
    top: 18px;
    left: 18px;
    max-width: calc(100% - 36px);
    padding: 12px 16px;
    border: 1px solid var(--glass-edge);
    border-radius: var(--radius-control);
    background: var(--glass-bg);
    box-shadow: var(--glass-shadow);
    color: var(--ink);
    -webkit-backdrop-filter: var(--glass-blur);
    backdrop-filter: var(--glass-blur);
}

.kf-gallery__price-card > span,
.kf-gallery__price-card > a {
    color: var(--muted);
    font-size: var(--text-micro);
    font-weight: 700;
}

.kf-gallery__price-card .kf-price {
    margin-block: 2px;
}

.kf-gallery__price-card .kf-price small {
    color: var(--muted);
}

@supports not ((-webkit-backdrop-filter: blur(1px)) or (backdrop-filter: blur(1px))) {
    .kf-header.is-scrolled.is-over-dark,
    .kf-gallery__light-toggle,
    .kf-gallery__price-card {
        background: rgba(15, 23, 32, 0.86);
    }
}

.kf-gallery__thumbs {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
    margin-top: 8px;
}

.kf-gallery__thumb {
    min-height: 70px;
    padding: 12px;
    border: 0;
    border-radius: var(--radius-control);
    background: var(--surface-soft);
    color: var(--muted);
    font-size: var(--text-micro);
    text-align: left;
    box-shadow: var(--elev-1);
    transition: background-color 150ms var(--ease-precision), box-shadow 150ms var(--ease-precision), color 150ms var(--ease-precision), transform 180ms var(--ease-precision);
}

.kf-gallery__thumb span {
    display: block;
    margin-bottom: 4px;
    font-size: var(--text-micro);
    font-weight: 800;
    letter-spacing: 0.12em;
}

.kf-gallery__thumb:hover,
.kf-gallery__thumb.is-active {
    background: var(--surface);
    box-shadow: var(--elev-2);
    color: var(--ink);
}

.kf-product-summary {
    padding-top: 12px;
}

.kf-product-summary__meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 20px;
}

.kf-badge {
    display: inline-flex;
    min-height: 26px;
    align-items: center;
    padding: 4px 10px;
    border-radius: var(--radius-control);
    background: var(--accent-soft);
    color: var(--accent-strong);
    font-size: var(--text-micro);
    font-weight: 800;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.kf-badge--quiet {
    background: var(--surface-soft);
    color: var(--muted);
}

.kf-badge--outline {
    border: 0;
    background: var(--accent-soft);
}

.kf-model {
    color: var(--muted);
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    font-size: var(--text-micro);
}

.kf-nowrap {
    white-space: nowrap;
}

.kf-product-summary h1 {
    max-width: 16ch;
    margin-bottom: 20px;
}

.kf-tagline {
    max-width: 31ch;
    margin-bottom: 16px;
    color: var(--ink);
    font-family: "Avenir Next", Avenir, sans-serif;
    font-size: var(--text-lead);
    font-weight: 500;
    line-height: 1.35;
}

.kf-lede {
    max-width: 67ch;
    margin-bottom: 32px;
    color: var(--muted);
    font-size: var(--text-body);
}

.kf-model-picker {
    margin-block: 30px;
    padding-block: 24px;
    border-block: 0;
    border-radius: var(--radius-card);
    background: var(--surface-soft);
    padding-inline: 20px;
}

.kf-model-picker h2 {
    margin-bottom: 16px;
    font-size: var(--text-body);
    letter-spacing: -0.01em;
}

.kf-model-picker__grid,
.kf-form-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.kf-model-picker label,
.kf-field {
    display: grid;
    gap: 7px;
    color: var(--ink);
    font-size: var(--text-small);
    font-weight: 700;
}

.kf-field > span,
.kf-choice-group legend span {
    color: var(--muted);
    font-size: var(--text-micro);
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.kf-field small,
.kf-field-note {
    margin: 0;
    color: var(--muted);
    font-size: var(--text-micro);
    font-weight: 500;
}

select,
textarea,
input[type="text"],
input[type="email"],
input[type="tel"],
input[type="number"],
input[type="url"],
input[type="search"],
input[type="file"] {
    width: 100%;
    border: 1px solid var(--line-strong);
    border-radius: 8px;
    background: var(--surface);
    color: var(--ink);
    font-size: var(--text-small);
}

select,
input[type="text"],
input[type="email"],
input[type="tel"],
input[type="number"],
input[type="url"],
input[type="search"] {
    min-height: 46px;
    padding: 10px 38px 10px 12px;
}

textarea {
    min-height: 92px;
    padding: 12px;
    resize: vertical;
}

.kf-order-panel {
    padding: 26px;
    border: 0;
    border-radius: var(--radius-card);
    background: var(--surface);
    box-shadow: var(--elev-2);
}

.kf-order-panel__heading {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
}

.kf-order-panel__label {
    color: var(--muted);
    font-size: var(--text-micro);
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.kf-price {
    margin: 4px 0 0;
    color: var(--ink);
}

.kf-price > span:not(.kf-price__quote) {
    font-family: "Avenir Next", Avenir, sans-serif;
    font-size: var(--text-price);
    font-weight: 600;
    letter-spacing: -0.04em;
}

.kf-price small {
    color: var(--muted);
    font-size: var(--text-micro);
}

.kf-price__quote {
    font-family: "Avenir Next", Avenir, sans-serif;
    font-size: var(--text-lead);
    font-weight: 600;
}

.kf-order-help {
    color: var(--muted);
    font-size: var(--text-small);
}

.kf-quantity-field {
    max-width: 280px;
    margin-block: 24px;
}

.kf-form-error {
    display: grid;
    gap: 4px;
    margin-bottom: 16px;
    padding: 14px 16px;
    border-radius: var(--radius-control);
    background: var(--accent-soft);
    color: var(--ink);
    font-size: var(--text-small);
}

.kf-form-error span {
    color: var(--muted);
}

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

.kf-kit-scope {
    margin: 22px 0 26px;
    padding: 20px;
    border-radius: var(--radius-card);
    background: var(--surface-soft);
    box-shadow: var(--elev-1);
}

.kf-kit-scope__heading {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 16px;
}

.kf-kit-scope__heading a {
    color: var(--accent);
    font-size: var(--text-small);
    font-weight: 700;
}

.kf-kit-scope__eyebrow,
.kf-kit-scope__column-title {
    color: var(--accent);
    font-size: var(--text-micro);
    font-weight: 800;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.kf-kit-scope__title {
    margin: 4px 0 0;
    color: var(--ink);
    font-family: var(--font-heading);
    font-size: var(--text-h3);
    font-weight: 600;
}

.kf-kit-scope__columns {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}

.kf-kit-scope__column {
    min-width: 0;
    padding: 16px;
    border-radius: var(--radius-control);
    background: var(--surface);
}

.kf-kit-scope__column-title {
    margin-bottom: 12px;
}

.kf-kit-scope__column ul {
    display: grid;
    gap: 9px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.kf-kit-scope__column li {
    display: grid;
    grid-template-columns: 18px minmax(0, 1fr);
    align-items: baseline;
    color: var(--ink);
    font-size: var(--text-small);
    line-height: 1.45;
}

.kf-kit-scope__column li > span:first-child {
    color: var(--accent);
    font-weight: 800;
}

.kf-kit-scope__column li small {
    grid-column: 2;
    color: var(--text-tertiary);
    font-size: var(--text-micro);
}

.kf-kit-scope__note {
    display: grid;
    gap: 3px;
    margin: 16px 0 0;
    color: var(--muted);
    font-size: var(--text-small);
}

.kf-kit-scope__note strong {
    color: var(--ink);
}

.kf-options {
    display: grid;
    gap: 18px;
}

.kf-choice-group {
    min-width: 0;
    margin: 0;
    padding: 0;
    border: 0;
}

.kf-choice-group legend {
    margin-bottom: 9px;
    font-size: var(--text-small);
    font-weight: 700;
}

.kf-swatch-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.kf-swatch {
    position: relative;
    display: flex;
    min-height: 42px;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    border: 1px solid var(--line);
    border-radius: 8px;
    color: var(--muted);
    font-size: var(--text-small);
    font-weight: 600;
}

.kf-swatch:has(input:checked) {
    border-color: var(--ink);
    color: var(--ink);
}

.kf-swatch input {
    position: absolute;
    width: 1px;
    height: 1px;
    opacity: 0;
}

.kf-swatch span {
    width: 16px;
    height: 16px;
    border: 1px solid var(--line-strong);
    border-radius: 50%;
    background: var(--surface-soft);
}

.kf-swatch:has(input[value="Black"]) span {
    background: var(--graphite);
}

.kf-swatch:has(input[value="White"]) span {
    background: var(--surface);
}

.kf-swatch:has(input[value="Silver Grey"]) span {
    background: var(--metal);
}

.kf-upgrade {
    margin-block: 22px;
    padding-block: 20px;
    border-block: 0;
    border-radius: var(--radius-card);
    background: var(--accent-soft);
    padding-inline: 18px;
}

.kf-upgrade__toggle {
    display: grid;
    grid-template-columns: 22px 1fr;
    align-items: center;
    gap: 10px;
}

.kf-upgrade__toggle input {
    position: absolute;
    width: 1px;
    height: 1px;
    opacity: 0;
}

.kf-upgrade__toggle > span {
    position: relative;
    width: 21px;
    height: 21px;
    border: 1px solid var(--line-strong);
    border-radius: 5px;
    background: var(--surface);
}

.kf-upgrade__toggle input:focus-visible + span {
    outline: 3px solid var(--focus);
    outline-offset: 3px;
}

.kf-upgrade__toggle input:checked + span {
    border-color: var(--accent);
    background: var(--accent);
}

.kf-upgrade__toggle input:checked + span::after {
    position: absolute;
    top: 3px;
    left: 6px;
    width: 6px;
    height: 10px;
    border: solid var(--on-accent);
    border-width: 0 2px 2px 0;
    content: "";
    transform: rotate(45deg);
}

.kf-upgrade > p {
    margin: 8px 0 0 32px;
    color: var(--muted);
    font-size: var(--text-micro);
}

.kf-upgrade__fields {
    display: grid;
    gap: 14px;
    margin-top: 18px;
    padding: 18px;
    border-radius: var(--radius-control);
    background: var(--surface-soft);
}

.kf-upgrade__fields:not([hidden]) {
    animation: kf-reveal 180ms var(--ease-precision) both;
}

.kf-pause,
.kf-deduction {
    display: grid;
    grid-template-columns: minmax(120px, 0.36fr) 1fr;
    gap: 14px;
    margin-block: 14px;
    padding: 13px 14px;
    border: 0;
    border-radius: var(--radius-control);
    box-shadow: var(--elev-1);
    color: var(--muted);
    font-size: var(--text-micro);
}

.kf-pause {
    border-color: var(--line-strong);
    background: var(--surface-soft);
    color: var(--ink);
}

.kf-deduction {
    border-color: var(--brand-sky);
    background: var(--accent-soft);
    color: var(--ink);
}

.kf-order-panel__actions .kf-button {
    flex: 1 1 180px;
}

.kf-order-help {
    margin: 14px 0 0;
    text-align: center;
}

.kf-section {
    padding-block: clamp(72px, 8vw, 112px);
}

.kf-section--tight {
    padding-top: 88px;
}

.kf-section--surface {
    background: var(--surface-soft);
}

.kf-editorial-grid,
.kf-inquiry__grid {
    display: grid;
    grid-template-columns: minmax(280px, 0.8fr) minmax(0, 1.2fr);
    gap: clamp(48px, 8vw, 120px);
}

.kf-editorial-grid h2,
.kf-inquiry h2 {
    max-width: 12ch;
}

.kf-prose {
    max-width: 70ch;
    color: var(--muted);
    font-size: var(--text-body);
}

.kf-prose p {
    margin-bottom: 1.35em;
}

.kf-feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 240px), 1fr));
    gap: 16px;
    margin-top: 64px;
    background: transparent;
}

.kf-feature {
    min-height: 170px;
    padding: 24px;
    border: 0;
    border-radius: var(--radius-card);
    background: var(--surface);
    box-shadow: var(--elev-1);
    transition: box-shadow 150ms var(--ease-precision), transform 180ms var(--ease-precision);
}

.kf-feature span {
    color: var(--accent);
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    font-size: var(--text-micro);
}

.kf-feature p {
    max-width: 29ch;
    margin: 44px 0 0;
    color: var(--ink);
    font-size: var(--text-small);
    font-weight: 600;
}

.kf-spec-section {
    background: var(--bg);
}

.kf-section-heading {
    display: grid;
    grid-template-columns: minmax(280px, 0.8fr) minmax(0, 1.2fr);
    align-items: end;
    gap: clamp(48px, 8vw, 120px);
    margin-bottom: 48px;
}

.kf-section-heading h2,
.kf-section-heading h3 {
    margin-bottom: 0;
}

.kf-section-heading > p {
    max-width: 62ch;
    margin: 0;
    color: var(--muted);
}

.kf-section-heading--small {
    display: block;
    margin-bottom: 24px;
}

.kf-spec-groups {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
}

.kf-spec-card {
    overflow: hidden;
    border: 0;
    border-radius: var(--radius-card);
    background: var(--surface);
    box-shadow: var(--elev-1);
}

.kf-spec-card--reference {
    background: var(--accent-soft);
}

.kf-spec-card h3,
.kf-spec-card__title {
    margin: 0;
    padding: 20px;
    border-bottom: 1px solid var(--line);
}

.kf-spec-card__title {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.kf-spec-card__title h3 {
    padding: 0;
    border: 0;
}

.kf-table-scroll {
    max-width: 100%;
    overflow-x: auto;
    overscroll-behavior-inline: contain;
}

.kf-spec-table,
.kf-compare-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--text-small);
    font-variant-numeric: tabular-nums;
    line-height: 1.6;
    text-align: left;
}

.kf-spec-table th,
.kf-spec-table td,
.kf-compare-table th,
.kf-compare-table td {
    padding: 14px 20px;
    border-top: 0;
    vertical-align: top;
}

.kf-spec-table th {
    width: 40%;
    color: var(--muted);
    font-weight: 600;
}

.kf-spec-table tbody tr:nth-child(even),
.kf-compare-table tbody tr:nth-child(even) {
    background: color-mix(in srgb, var(--surface-soft) 68%, transparent);
}

.kf-spec-table td {
    color: var(--ink);
    font-weight: 600;
}

.kf-compare {
    margin-top: 88px;
}

.kf-compare-table {
    min-width: 820px;
}

.kf-compare-table thead th {
    border-top: 0;
    border-bottom: 1px solid var(--line);
    color: var(--muted);
    font-size: var(--text-micro);
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.kf-compare-table tbody tr.is-selected {
    background: var(--accent-soft);
}

.kf-chip-list {
    display: flex;
    flex-wrap: wrap;
    align-content: flex-start;
    gap: 10px;
    margin: 6px 0 0;
    padding: 0;
    list-style: none;
}

.kf-chip-list li {
    padding: 10px 15px;
    border: 0;
    border-radius: var(--radius-control);
    background: var(--surface);
    box-shadow: var(--elev-1);
    font-size: var(--text-small);
    font-weight: 600;
}

.kf-downloads {
    display: grid;
    grid-template-columns: minmax(280px, 0.8fr) minmax(0, 1.2fr);
    gap: clamp(48px, 8vw, 120px);
}

.kf-empty-state {
    display: flex;
    align-items: flex-start;
    gap: 18px;
    padding: 24px;
    border: 0;
    border-radius: var(--radius-card);
    background: var(--surface);
    box-shadow: var(--elev-1);
}

.kf-empty-state > span {
    display: grid;
    width: 38px;
    height: 38px;
    flex: 0 0 auto;
    place-content: center;
    border: 1px solid var(--line-strong);
    border-radius: 50%;
}

.kf-empty-state p {
    margin: 5px 0 0;
    color: var(--muted);
    font-size: var(--text-small);
}

.kf-inquiry {
    padding-block: clamp(72px, 8vw, 112px);
    background: var(--bg);
    color: var(--ink);
}

.kf-inquiry__grid {
    align-items: end;
}

.kf-inquiry__grid > div:last-child {
    max-width: 62ch;
}

.kf-inquiry__grid > div:last-child p {
    margin-bottom: 28px;
    color: var(--muted);
}

.kf-footer {
    padding: 64px 0 28px;
    border-top: 0;
    background: var(--bg);
    color: var(--muted);
}

.kf-footer__grid {
    display: grid;
    grid-template-columns: minmax(0, 2fr) repeat(3, minmax(140px, 0.7fr));
    gap: 64px;
}

.kf-footer__grid > div {
    display: grid;
    min-width: 0;
    align-content: start;
    justify-items: start;
    gap: 8px;
}

.kf-brand--footer {
    color: var(--ink);
}

.kf-footer__slogan {
    color: var(--text-secondary);
    font-size: var(--text-small);
    font-weight: 500;
}

.kf-footer p,
.kf-footer a,
.kf-footer button {
    max-width: 48ch;
    margin: 0;
    font-size: var(--text-small);
    overflow-wrap: anywhere;
}

.kf-footer__label {
    color: var(--ink);
    font-weight: 700;
}

.kf-footer__addresses {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
    width: 100%;
    margin-top: 8px;
}

.kf-footer__address {
    display: grid;
    align-content: start;
    gap: 6px;
    min-width: 0;
}

.kf-footer__address .kf-eyebrow {
    color: var(--accent);
}

.kf-footer__bottom {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    margin-top: 56px;
    padding-top: 24px;
    border-top: 0;
    font-size: var(--text-micro);
}

.kf-toast {
    position: fixed;
    z-index: 100;
    right: 20px;
    bottom: 20px;
    max-width: min(400px, calc(100vw - 40px));
    padding: 14px 18px;
    border: 0;
    border-radius: var(--radius-control);
    background: var(--ink);
    color: var(--bg);
    box-shadow: var(--shadow-soft);
    font-size: var(--text-small);
}

.kf-generic-main {
    min-height: 68vh;
    padding-block: 120px;
}

.kf-generic-hero {
    max-width: 780px;
}

.kf-generic-hero h1 {
    max-width: 12ch;
}

.kf-generic-hero > p:not(.kf-eyebrow) {
    max-width: 65ch;
    color: var(--muted);
}

/* Stage 3b brand, catalogue and content components. */
.kf-page-hero {
    padding-block: clamp(64px, 7vw, 96px);
    border-bottom: 0;
    background: var(--bg);
}

.kf-page-hero__inner {
    display: grid;
    grid-template-columns: minmax(0, 1.25fr) minmax(280px, 0.75fr);
    align-items: end;
    gap: clamp(48px, 9vw, 128px);
}

.kf-page-hero__inner > .kf-eyebrow {
    grid-column: 1 / -1;
    margin-bottom: 0;
}

.kf-page-hero__inner > h1 {
    grid-column: 1;
}

.kf-page-hero__inner > *,
.kf-home-hero__grid > *,
.kf-trust-block > *,
.kf-history-summary > *,
.kf-contact-grid > *,
.kf-evidence-grid > *,
.kf-application-section__grid > * {
    min-width: 0;
}

.kf-page-hero h1 {
    max-width: 12ch;
    margin: 0;
    font-size: var(--text-display);
}

.kf-page-hero__inner > p:last-child {
    grid-column: 2;
    max-width: 62ch;
    margin: 0 0 8px;
    color: var(--muted);
    font-size: var(--text-lead);
}

.kf-page-hero--catalog {
    padding-top: 64px;
}

.kf-home-hero {
    padding-block: clamp(64px, 8vw, 112px);
    background: var(--bg);
}

.kf-home-hero__grid {
    display: grid;
    grid-template-columns: minmax(0, 0.88fr) minmax(420px, 1.12fr);
    align-items: center;
    gap: clamp(48px, 7vw, 96px);
}

.kf-home-hero__content h1 {
    max-width: 11ch;
    margin-bottom: 28px;
    font-size: var(--text-display);
}

.kf-home-hero__content > p:not(.kf-eyebrow) {
    max-width: 58ch;
    margin-bottom: 32px;
    color: var(--muted);
    font-size: var(--text-lead);
}

.kf-asset {
    min-width: 0;
    margin: 0;
}

.kf-asset img,
.kf-asset__pending {
    display: block;
    width: 100%;
    border: 0;
    border-radius: var(--radius-card);
    background: var(--surface-soft);
    box-shadow: var(--elev-1);
}

.kf-asset img {
    height: 100%;
    object-fit: cover;
}

.kf-asset__pending {
    display: grid;
    min-height: 280px;
    align-content: space-between;
    padding: 24px;
    background-image: linear-gradient(135deg, transparent 49.85%, var(--line) 50%, transparent 50.15%);
}

.kf-asset__pending span {
    color: var(--accent);
    font-size: var(--text-micro);
    font-weight: 800;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.kf-asset__pending strong {
    max-width: 24ch;
    font-family: var(--font-heading);
    font-size: var(--text-h3);
    line-height: 1.15;
}

.kf-asset--hero :is(img, .kf-asset__pending) {
    aspect-ratio: 4 / 3;
    min-height: 0;
}

.kf-asset--scene :is(img, .kf-asset__pending),
.kf-asset--process :is(img, .kf-asset__pending) {
    aspect-ratio: 16 / 9;
    min-height: 0;
}

.kf-asset--wide :is(img, .kf-asset__pending),
.kf-asset--application :is(img, .kf-asset__pending) {
    aspect-ratio: 16 / 9;
    min-height: 0;
}

.kf-capability-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    border-top: 0;
}

.kf-capability {
    padding: 28px;
    border: 0;
    border-radius: var(--radius-card);
    background: var(--surface);
    box-shadow: var(--elev-1);
    transition: box-shadow 150ms var(--ease-precision), transform 180ms var(--ease-precision);
}

.kf-capability + .kf-capability {
    padding-left: 28px;
}

.kf-capability:last-child {
    border-right: 0;
}

.kf-capability > span,
.kf-category-link > span {
    color: var(--accent);
    font-family: var(--font-mono);
    font-size: var(--text-micro);
}

.kf-capability h3 {
    margin: 36px 0 14px;
}

.kf-capability p {
    margin: 0;
    color: var(--muted);
}

.kf-category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 230px), 1fr));
    gap: 16px;
    border: 0;
    background: transparent;
}

.kf-category-link {
    display: grid;
    min-height: 190px;
    align-content: space-between;
    padding: 24px;
    border-radius: var(--radius-card);
    background: var(--surface);
    box-shadow: var(--elev-1);
    text-decoration: none;
    transition: box-shadow 150ms var(--ease-precision), transform 180ms var(--ease-precision);
}

.kf-category-link:hover {
    box-shadow: var(--elev-3);
    transform: translateY(-2px);
}

.kf-category-link strong {
    margin-top: 38px;
    font-family: var(--font-heading);
    font-size: var(--text-lead);
    line-height: 1.15;
}

.kf-category-link small {
    color: var(--muted);
}

.kf-scene-grid,
.kf-insights-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
}

.kf-scene-card {
    display: grid;
    grid-template-columns: minmax(180px, 0.8fr) minmax(0, 1.2fr);
    overflow: hidden;
    border: 0;
    border-radius: var(--radius-card);
    background: var(--surface);
    box-shadow: var(--elev-1);
    transition: box-shadow 150ms var(--ease-precision), transform 180ms var(--ease-precision);
}

.kf-scene-card > div {
    padding: 28px;
}

.kf-scene-card h3 {
    margin-bottom: 12px;
}

.kf-scene-card p {
    color: var(--muted);
}

.kf-scene-card a,
.kf-text-link {
    color: var(--ink);
    font-size: var(--text-small);
    font-weight: 700;
}

.kf-scene-grid + .kf-text-link {
    display: inline-block;
    margin-top: 32px;
}

.kf-trust-block,
.kf-history-summary {
    display: grid;
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    align-items: center;
    gap: clamp(48px, 8vw, 120px);
}

.kf-trust-block h2,
.kf-history-summary h2 {
    max-width: 12ch;
}

.kf-trust-block > div > p:not(.kf-eyebrow),
.kf-history-summary > div:last-child > p {
    max-width: 62ch;
    color: var(--muted);
}

.kf-insight-card {
    min-height: 180px;
    padding: 24px;
    border: 0;
    border-radius: var(--radius-card);
    background: var(--surface);
    box-shadow: var(--elev-1);
    transition: box-shadow 150ms var(--ease-precision), transform 180ms var(--ease-precision);
}

.kf-insight-card time {
    color: var(--muted);
    font-size: var(--text-micro);
}

.kf-insight-card h3 {
    margin-top: 44px;
}

.kf-empty-state--wide {
    min-height: 180px;
}

.kf-fact-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px 24px;
    margin-top: 56px;
}

.kf-fact-list > div {
    padding: 18px 20px;
    border-radius: var(--radius-control);
    background: var(--surface-soft);
}

.kf-fact-list dt {
    color: var(--muted);
    font-size: var(--text-micro);
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.kf-fact-list dd {
    margin: 6px 0 0;
    color: var(--ink);
    font-size: var(--text-body);
}

.kf-process-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 32px 20px;
    margin: 0;
    padding: 0;
    list-style: none;
    counter-reset: process;
}

.kf-process-grid > li {
    min-width: 0;
}

.kf-process-grid > li > span {
    display: block;
    margin-bottom: 10px;
    color: var(--accent);
    font-family: var(--font-mono);
    font-size: var(--text-micro);
}

.kf-process-grid h3 {
    margin: 20px 0 10px;
}

.kf-process-grid p,
.kf-evidence-grid article > p:not(.kf-eyebrow) {
    color: var(--muted);
}

.kf-evidence-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 64px;
}

.kf-evidence-grid article {
    min-width: 0;
}

.kf-evidence-grid .kf-asset {
    margin-top: 32px;
}

.kf-application-section {
    padding-block: 96px;
    border-top: 0;
}

.kf-application-section:nth-child(even) {
    background: var(--surface-soft);
}

.kf-application-section__grid {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: start;
    gap: clamp(48px, 8vw, 112px);
}

.kf-application-section:nth-child(even) .kf-asset {
    order: 2;
}

.kf-application-section h2 {
    max-width: 12ch;
}

.kf-application-section__grid > div > p:not(.kf-eyebrow) {
    color: var(--muted);
}

.kf-point-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 28px 0;
    padding: 0;
    list-style: none;
}

.kf-point-list li {
    padding: 7px 11px;
    border: 0;
    border-radius: var(--radius-control);
    background: var(--surface);
    box-shadow: var(--elev-1);
    font-size: var(--text-micro);
    font-weight: 700;
}

.kf-recommended-products {
    padding-top: 24px;
    border-top: 0;
}

.kf-recommended-products > strong {
    font-size: var(--text-micro);
    text-transform: uppercase;
}

.kf-recommended-products ul {
    margin: 12px 0 0;
    padding: 0;
    list-style: none;
}

.kf-recommended-products a {
    display: flex;
    gap: 16px;
    justify-content: space-between;
    padding-block: 10px;
    border-bottom: 0;
    border-radius: var(--radius-control);
    background: var(--surface);
    padding-inline: 12px;
    text-decoration: none;
}

.kf-recommended-products a span {
    color: var(--accent);
    font-family: var(--font-mono);
    font-size: var(--text-micro);
}

.kf-resource-search {
    display: grid;
    max-width: 560px;
    gap: 8px;
    margin-bottom: 48px;
    font-size: var(--text-small);
    font-weight: 700;
}

.kf-resource-group {
    margin-bottom: 56px;
}

.kf-resource-group h2 {
    font-size: var(--text-h3);
}

.kf-resource-group ul {
    margin: 0;
    padding: 0;
    display: grid;
    gap: 8px;
    border-top: 0;
    list-style: none;
}

.kf-resource-group li {
    display: flex;
    min-height: 72px;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    padding: 14px 0;
    border-bottom: 0;
    border-radius: var(--radius-control);
    background: var(--surface);
    box-shadow: var(--elev-1);
    padding-inline: 16px;
}

.kf-resource-group li > div {
    display: grid;
}

.kf-resource-group li span {
    color: var(--muted);
    font-family: var(--font-mono);
    font-size: var(--text-micro);
}

.kf-contact-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(320px, 0.85fr);
    align-items: start;
    gap: clamp(56px, 9vw, 128px);
}

.kf-contact-grid > div > p:not(.kf-eyebrow) {
    color: var(--muted);
}

.kf-inquiry-form {
    display: grid;
    gap: 18px;
    margin-top: 40px;
    padding: 32px;
    border: 0;
    border-radius: var(--radius-card);
    background: var(--surface);
    box-shadow: var(--elev-2);
}

.kf-inquiry-form > *,
.kf-inquiry-form .kf-form-grid > * {
    min-width: 0;
}

.kf-inquiry-form input[type="file"] {
    max-width: 100%;
}

.kf-inquiry-products {
    display: grid;
    gap: 14px;
    min-width: 0;
    margin: 0;
    padding: 20px;
    border: 0;
    border-radius: var(--radius-control);
    background: var(--surface-soft);
}

.kf-inquiry-products legend {
    padding: 0;
    color: var(--ink);
    font-weight: 700;
}

.kf-inquiry-products > p {
    margin: 0;
    color: var(--muted);
    font-size: var(--text-small);
}

.kf-inquiry-product-row {
    display: grid;
    grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.3fr) minmax(130px, 0.55fr);
    gap: 14px;
    min-width: 0;
}

.kf-inquiry-product-row > * {
    min-width: 0;
}

.kf-inquiry-product-row + .kf-inquiry-product-row {
    padding-top: 14px;
}

.kf-honeypot {
    position: absolute !important;
    left: -10000px !important;
    width: 1px !important;
    height: 1px !important;
    overflow: hidden !important;
}

.kf-file-control {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    align-items: center;
    min-height: 46px;
    overflow: hidden;
    border: 1px solid var(--line-strong);
    border-radius: var(--radius-control);
    background: var(--surface);
    color: var(--muted);
    font-size: var(--text-small);
}

.kf-file-control__button {
    align-content: center;
    align-self: stretch;
    padding-inline: 14px;
    background: var(--accent-soft);
    color: var(--ink);
    font-weight: 700;
}

.kf-file-control__status {
    min-width: 0;
    padding-inline: 14px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.kf-field:has(input[type="file"]:focus-visible) .kf-file-control {
    border-color: var(--accent);
    outline: 3px solid var(--focus);
    outline-offset: 3px;
}

.kf-scroll-hint {
    display: none;
    margin: 0 0 8px;
    color: var(--accent);
    font-size: var(--text-micro);
    font-weight: 800;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.kf-consent {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    color: var(--muted);
    font-size: var(--text-small);
}

.kf-consent input {
    width: 18px;
    height: 18px;
    margin-top: 3px;
    flex: 0 0 auto;
}

.kf-inquiry-form .kf-button {
    justify-self: start;
}

.kf-form-status {
    margin: 0;
    color: var(--muted);
    font-size: var(--text-micro);
}

.kf-contact-details {
    display: grid;
    gap: 12px;
    border-top: 0;
}

.kf-contact-details > div {
    padding: 20px;
    border-bottom: 0;
    border-radius: var(--radius-control);
    background: var(--surface-soft);
}

.kf-contact-details > .kf-contact-details__addresses {
    padding: 0;
    background: transparent;
}

.kf-contact-details__legal-name {
    margin: 0 0 12px !important;
    color: var(--ink);
    font-weight: 700;
}

.kf-contact-address-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}

.kf-contact-address-card {
    min-width: 0;
    padding: 20px;
    border-radius: var(--radius-card);
    background: var(--surface-soft);
    box-shadow: var(--elev-1);
}

.kf-contact-address-card p[lang] {
    color: var(--muted);
    font-size: var(--text-small);
}

.kf-contact-details span,
.kf-contact-details > div > strong {
    color: var(--accent);
    font-size: var(--text-micro);
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.kf-contact-details p {
    margin: 8px 0 0;
}

.kf-map-pending {
    min-height: 220px;
    align-content: end;
    padding: 24px !important;
    background: var(--surface-soft);
    background-image: linear-gradient(135deg, transparent 49.85%, var(--line) 50%, transparent 50.15%);
    border-radius: var(--radius-card);
    box-shadow: var(--elev-1);
}

.kf-timeline {
    position: relative;
    max-width: 980px;
    margin: 0 auto;
    padding: 0;
    list-style: none;
}

.kf-timeline::before {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 92px;
    width: 1px;
    background: var(--line-strong);
    content: "";
}

.kf-timeline > li {
    display: grid;
    grid-template-columns: 92px minmax(0, 1fr);
    gap: 40px;
    padding-bottom: 72px;
}

.kf-timeline time {
    position: relative;
    z-index: 1;
    width: 74px;
    padding: 6px 8px;
    background: var(--accent);
    color: var(--on-accent);
    font-family: var(--font-mono);
    border-radius: var(--radius-control);
    font-size: var(--text-micro);
    font-variant-numeric: tabular-nums;
    text-align: center;
}

.kf-timeline h2 {
    font-size: var(--text-h3);
}

.kf-timeline p {
    color: var(--muted);
}

.kf-timeline__pending {
    display: flex;
    min-height: 130px;
    align-items: flex-end;
    justify-content: space-between;
    gap: 24px;
    margin-top: 24px;
    padding: 20px;
    border: 0;
    border-radius: var(--radius-card);
    background: var(--surface-soft);
    box-shadow: var(--elev-1);
}

.kf-timeline__pending span {
    color: var(--accent);
    font-size: var(--text-micro);
    font-weight: 800;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.kf-timeline__pending strong {
    color: var(--line-strong);
    font-family: var(--font-heading);
    font-size: var(--text-h3);
}

.kf-policy-layout {
    max-width: 900px;
}

.kf-policy-layout > h1 {
    max-width: 18ch;
}

.kf-policy-approval {
    margin-block: 24px 40px;
}

.kf-policy-content {
    max-width: 72ch;
    margin-bottom: 40px;
    line-height: 1.75;
    overflow-wrap: anywhere;
}

.kf-policy-content h2 {
    margin: 44px 0 16px;
    font-size: var(--text-h3);
    line-height: 1.3;
}

.kf-policy-content h3 {
    margin: 28px 0 12px;
    font-size: var(--text-body);
    line-height: 1.5;
}

.kf-policy-content p,
.kf-policy-content ul {
    margin-block: 0 18px;
}

.kf-policy-content ul {
    padding-left: 1.4em;
}

.kf-policy-content li + li {
    margin-top: 8px;
}

.kf-policy-content a {
    text-decoration: underline;
    text-underline-offset: 3px;
}

.kf-catalog-body {
    padding-block: 72px 112px;
}

.kf-filter-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 48px;
}

.kf-filter-nav a {
    min-height: 44px;
    align-content: center;
    padding: 8px 14px;
    border: 0;
    border-radius: var(--radius-control);
    background: var(--surface);
    box-shadow: var(--elev-1);
    font-size: var(--text-small);
    font-weight: 700;
    text-decoration: none;
}

.kf-filter-nav a[aria-current="page"] {
    background: var(--accent);
    color: var(--on-accent);
}

.kf-product-card-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
}

.kf-search-page__hero h1,
.kf-search-page__hero [data-search-query] {
    overflow-wrap: anywhere;
}

.kf-search-result-heading {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(180px, 0.35fr);
    align-items: end;
    gap: 32px;
    margin-bottom: 40px;
}

.kf-search-result-heading h2,
.kf-search-result-heading p {
    margin-bottom: 0;
}

.kf-search-result-heading > p {
    color: var(--text-secondary);
    text-align: right;
}

.kf-search-empty-state {
    max-width: 780px;
    padding: clamp(32px, 6vw, 64px);
    border-radius: var(--radius-section);
    background: var(--surface);
    box-shadow: var(--elev-2);
}

.kf-search-empty-state h2 {
    margin-bottom: 16px;
}

.kf-search-empty-state .kf-button {
    margin-top: 12px;
}

.kf-product-card {
    min-width: 0;
    overflow: hidden;
    border: 0;
    border-radius: var(--radius-card);
    background: var(--surface);
    box-shadow: var(--elev-1);
    transition: box-shadow 150ms var(--ease-precision), transform 180ms var(--ease-precision);
}

.kf-product-card__visual {
    display: grid;
    aspect-ratio: 4 / 3;
    align-content: space-between;
    padding: 24px;
    background: var(--surface-soft);
    background-image: linear-gradient(135deg, transparent 49.85%, var(--line) 50%, transparent 50.15%);
    text-decoration: none;
}

.kf-product-card__visual span {
    color: var(--accent);
    font-size: var(--text-micro);
    font-weight: 800;
    text-transform: uppercase;
}

.kf-product-card__visual strong {
    font-family: var(--font-mono);
    font-size: var(--text-h3);
}

.kf-product-card__body {
    padding: 24px;
}

.kf-product-card__meta {
    display: flex;
    align-items: start;
    justify-content: space-between;
    gap: 16px;
    color: var(--muted);
    font-size: var(--text-micro);
}

.kf-product-card__meta .kf-model {
    max-width: 60%;
}

.kf-product-card h2 {
    margin: 30px 0 12px;
    font-size: var(--text-h3);
}

.kf-product-card h2 a {
    text-decoration: none;
}

.kf-product-card p {
    color: var(--muted);
}

.kf-mid-cta {
    padding-block: 32px;
    border-block: 0;
    background: var(--accent-soft);
}

.kf-mid-cta__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.kf-mid-cta p {
    margin: 0;
    font-family: var(--font-heading);
    font-size: var(--text-lead);
    font-weight: 600;
}

@keyframes kf-reveal {
    from {
        opacity: 0;
        transform: translateY(-4px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Stage 3 visual redesign: shared elevation, Kit education and precision details. */
.kf-feature:hover,
.kf-capability:hover,
.kf-scene-card:hover,
.kf-insight-card:hover,
.kf-product-card:hover {
    box-shadow: var(--elev-3);
    transform: translateY(-2px);
}

.kf-price,
.kf-model,
.kf-spec-table,
.kf-compare-table,
.kf-product-card__meta,
.kf-timeline,
.kf-guide-table {
    font-variant-numeric: tabular-nums;
}

.kf-insight-card__type,
.kf-guide-scope__title,
.kf-buyer-grid article > span {
    color: var(--accent);
    font-size: var(--text-micro);
    font-weight: 800;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.kf-insight-card h2 {
    margin: 40px 0 12px;
    font-size: var(--text-h3);
}

.kf-insight-card p {
    color: var(--muted);
}

.kf-guide-scope,
.kf-buyer-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
    margin-top: 56px;
}

.kf-guide-scope > div,
.kf-buyer-grid article {
    padding: 24px;
    border-radius: var(--radius-card);
    background: var(--surface);
    box-shadow: var(--elev-1);
}

.kf-guide-scope ul {
    display: grid;
    gap: 10px;
    margin: 18px 0 0;
    padding: 0;
    list-style: none;
}

.kf-guide-scope li {
    display: grid;
    grid-template-columns: 20px minmax(0, 1fr);
    color: var(--ink);
}

.kf-guide-scope li span {
    color: var(--accent);
    font-weight: 800;
}

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

.kf-buyer-grid h3 {
    margin: 36px 0 12px;
}

.kf-buyer-grid p {
    margin: 0;
    color: var(--muted);
}

.kf-guide-table {
    overflow-x: auto;
    overflow-y: hidden;
    border-radius: var(--radius-card);
    background: var(--surface);
    box-shadow: var(--elev-1);
}

.kf-guide-table table {
    width: 100%;
    min-width: 760px;
    border-collapse: collapse;
    font-size: var(--text-small);
    line-height: 1.6;
    text-align: left;
}

.kf-guide-table :is(th, td) {
    padding: 14px 20px;
    border: 0;
    vertical-align: top;
}

.kf-guide-table thead th {
    border-bottom: 1px solid var(--line);
    color: var(--muted);
    font-size: var(--text-micro);
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.kf-guide-table tbody tr:nth-child(even) {
    background: var(--surface-soft);
}

.kf-guide-steps {
    display: grid;
    gap: 16px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.kf-guide-steps li {
    display: grid;
    grid-template-columns: 36px minmax(0, 1fr);
    gap: 12px;
    align-items: baseline;
}

.kf-guide-steps span {
    color: var(--accent);
    font-family: var(--font-mono);
    font-size: var(--text-micro);
    font-weight: 800;
}

.kf-guide-steps p {
    margin: 0;
    color: var(--ink);
}

.kf-guide-note {
    margin: 28px 0 0;
    padding: 18px;
    border-radius: var(--radius-control);
    background: var(--surface);
    color: var(--muted);
}

.kf-guide-actions {
    margin-top: 32px;
}

.section--dark .kf-button--secondary,
.section--deep .kf-button--secondary {
    background: var(--surface);
    color: var(--ink);
}

select:focus-visible,
textarea:focus-visible,
input:focus-visible {
    border-color: var(--accent);
    transition: border-color 150ms var(--ease-precision), outline-color 150ms var(--ease-precision);
}

@media (max-width: 1080px) {
    .kf-nav__list {
        gap: 18px;
    }

    .kf-product-hero__grid {
        grid-template-columns: minmax(0, 1fr) minmax(360px, 0.9fr);
        gap: 40px;
    }

    .kf-placeholder--hero {
        min-height: 0;
    }

    .kf-nav__list {
        gap: 14px;
    }

    .kf-nav a,
    .kf-nav summary {
        font-size: var(--text-small);
    }

    .kf-scene-card {
        grid-template-columns: 1fr;
    }

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

@media (max-width: 900px) {
    .kf-header__inner {
        grid-template-columns: minmax(0, 1fr) auto auto auto;
        gap: 12px;
    }

    .kf-nav {
        position: fixed;
        z-index: 30;
        top: 0;
        right: 0;
        width: min(380px, 100vw);
        height: 100dvh;
        overflow-y: auto;
        padding: 88px 24px 32px;
        border-left: 0;
        border-radius: var(--radius-section) 0 0 var(--radius-section);
        background: var(--surface);
        box-shadow: var(--shadow-soft);
        transform: translateX(105%);
        transition: transform 180ms ease;
    }

    .kf-menu-open .kf-nav {
        transform: translateX(0);
    }

    .kf-menu-open {
        overflow: hidden;
    }

    .kf-menu-toggle {
        position: relative;
        z-index: 40;
        display: inline-grid;
        min-width: 48px;
        min-height: 42px;
        place-content: center;
        padding: 6px 10px;
        border: 0;
        border-radius: var(--radius-control);
        background: var(--surface);
        box-shadow: var(--elev-1);
        color: var(--ink);
        font-size: var(--text-micro);
        font-weight: 700;
    }

    .kf-menu-toggle > span:first-child {
        display: block;
        width: 18px;
        height: 8px;
        margin: 0 auto 2px;
        border-block: 1px solid currentcolor;
    }

    .kf-nav__list {
        display: grid;
        align-items: stretch;
        gap: 0;
    }

    .kf-nav__list > li {
        border-bottom: 0;
    }

    .kf-nav__list > li > a,
    .kf-nav summary {
        display: block;
        min-height: 52px;
        align-content: center;
        color: var(--ink);
        font-size: var(--text-small);
    }

    .kf-nav__submenu {
        position: static;
        width: auto;
        padding: 0 0 14px 14px;
        border: 0;
        background: transparent;
        box-shadow: none;
        transform: none;
    }

    .kf-nav__mobile-quote {
        display: block;
        padding-top: 20px;
        border-bottom: 0 !important;
    }

    .kf-header__cta {
        grid-column: 3;
        grid-row: 1;
    }

    .kf-menu-toggle {
        grid-column: 4;
        grid-row: 1;
    }

    .kf-site-search {
        grid-column: 2;
        grid-row: 1;
    }

    .kf-site-search.is-open {
        position: absolute;
        inset-inline: 0;
        grid-column: 1 / -1;
        width: 100%;
    }

    .kf-header.kf-search-open .kf-brand,
    .kf-header.kf-search-open .kf-header__cta,
    .kf-header.kf-search-open .kf-menu-toggle {
        visibility: hidden;
        pointer-events: none;
    }

    .kf-site-search__panel {
        width: 100%;
    }

    .kf-product-hero__grid,
    .kf-editorial-grid,
    .kf-section-heading,
    .kf-downloads,
    .kf-inquiry__grid,
    .kf-search-result-heading {
        grid-template-columns: 1fr;
    }

    .kf-search-result-heading > p {
        text-align: left;
    }

    .kf-gallery {
        position: static;
    }

    .kf-placeholder--hero {
        aspect-ratio: 4 / 3;
        min-height: 0;
    }

    .kf-product-summary h1 {
        max-width: 16ch;
    }

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

    .kf-spec-groups {
        grid-template-columns: 1fr;
    }

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

    .kf-footer__addresses {
        grid-template-columns: 1fr;
    }

    .kf-footer__grid > div:last-child {
        grid-column: auto;
    }

    .kf-page-hero__inner,
    .kf-home-hero__grid,
    .kf-trust-block,
    .kf-history-summary,
    .kf-contact-grid,
    .kf-application-section__grid {
        grid-template-columns: 1fr;
    }

    .kf-page-hero__inner > :is(.kf-eyebrow, h1, p:last-child) {
        grid-column: auto;
    }

    .kf-asset--hero :is(img, .kf-asset__pending) {
        aspect-ratio: 4 / 3;
        min-height: 0;
    }

    .kf-capability-grid {
        grid-template-columns: 1fr;
    }

    .kf-capability,
    .kf-capability + .kf-capability {
        padding: 28px;
        border-right: 0;
        border-bottom: 0;
    }

    .kf-scene-grid {
        grid-template-columns: 1fr;
    }

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

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

    .kf-application-section:nth-child(even) .kf-asset {
        order: 0;
    }
}

@media (max-width: 560px) {
    .kf-container {
        width: min(calc(100% - 32px), 1240px);
    }

    .kf-header__inner {
        min-height: 66px;
    }

    :root {
        --kf-header-h: 66px;
    }

    .kf-header.is-scrolled.is-over-dark,
    .kf-gallery__light-toggle,
    .kf-gallery__price-card {
        -webkit-backdrop-filter: var(--glass-blur-mobile);
        backdrop-filter: var(--glass-blur-mobile);
    }

    .kf-brand {
        font-size: var(--text-micro);
    }

    .kf-brand__logo {
        width: 77px;
        height: 40px;
    }

    .kf-header__cta {
        min-height: 38px;
        padding-inline: 12px;
        font-size: var(--text-micro);
    }

    .kf-menu-toggle {
        min-width: 44px;
        padding-inline: 7px;
    }

    .kf-breadcrumbs {
        padding-block: 16px;
    }

    .kf-product-hero {
        padding-top: 0;
        padding-bottom: 64px;
    }

    .kf-product-hero__grid {
        gap: 32px;
    }

    .kf-placeholder--hero {
        aspect-ratio: 4 / 3;
        padding: 20px;
    }

    .kf-placeholder--hero > :is(.kf-placeholder__eyebrow, strong, [data-view-output]) {
        transform: translateY(52px);
    }

    .kf-contact-address-grid {
        grid-template-columns: 1fr;
    }

    .kf-gallery__thumbs {
        grid-template-columns: 1fr;
    }

    .kf-gallery__thumb {
        min-height: 48px;
    }

    .kf-gallery__thumb span {
        display: inline;
        margin-right: 8px;
    }

    .kf-product-summary h1 {
        font-size: var(--text-h1);
    }

    .kf-model-picker__grid,
    .kf-inquiry-product-row,
    .kf-form-grid {
        grid-template-columns: 1fr;
    }

    .kf-order-panel {
        margin-inline: -4px;
        padding: 20px;
    }

    .kf-order-panel__heading {
        display: grid;
    }

    .kf-pause,
    .kf-deduction {
        grid-template-columns: 1fr;
        gap: 4px;
    }

    .kf-feature-grid {
        grid-template-columns: 1fr;
        margin-top: 48px;
    }

    .kf-feature {
        min-height: 130px;
    }

    .kf-feature p {
        margin-top: 28px;
    }

    .kf-spec-card h3,
    .kf-spec-card__title {
        padding-inline: 14px;
    }

    .kf-spec-table th,
    .kf-spec-table td,
    .kf-compare-table th,
    .kf-compare-table td {
        padding: 12px 14px;
    }

    .kf-footer__grid {
        grid-template-columns: 1fr;
        gap: 36px;
    }

    .kf-footer__grid > div:last-child {
        grid-column: auto;
    }

    .kf-footer__bottom {
        flex-direction: column;
    }

    .kf-page-hero {
        padding-block: 64px;
    }

    .kf-page-hero h1,
    .kf-home-hero__content h1 {
        font-size: var(--text-h1);
    }

    .kf-home-hero {
        padding-block: 48px 64px;
    }

    .kf-category-grid,
    .kf-fact-list,
    .kf-process-grid,
    .kf-evidence-grid,
    .kf-product-card-grid,
    .kf-insights-grid,
    .kf-guide-scope,
    .kf-buyer-grid {
        grid-template-columns: 1fr;
    }

    .kf-kit-scope__heading {
        align-items: flex-start;
        flex-direction: column;
    }

    .kf-kit-scope__columns {
        grid-template-columns: 1fr;
    }

    .kf-scroll-hint {
        display: block;
    }

    .kf-scene-card {
        grid-template-columns: 1fr;
    }

    .kf-inquiry-form {
        padding: 20px;
    }

    .kf-application-section {
        padding-block: 64px;
    }

    .kf-timeline::before {
        left: 28px;
    }

    .kf-timeline > li {
        grid-template-columns: 56px minmax(0, 1fr);
        gap: 18px;
    }

    .kf-timeline time {
        width: 56px;
        padding-inline: 3px;
        font-size: var(--text-micro);
    }

    .kf-mid-cta__inner {
        align-items: stretch;
        flex-direction: column;
    }
}

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

    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
    }

    .kf-button--shine::before {
        transform: translateX(-120%) !important;
        transition: none !important;
    }
}

/* Product imagery uses fixed existing light/dark domain colours (§0.1B).
   A nested dark section must not invert a black housing's light image panel. */
[data-image-background="dark"] { background: var(--surface); }
[data-image-background="light"] { background: var(--surface-soft); }
.kf-product-card__visual[data-image-background] { display: block; padding: 16px; }
.kf-product-card__visual picture,
.kf-gallery__stage picture { display: block; width: 100%; height: 100%; }
.kf-product-card__visual img,
.kf-gallery__stage img { display: block; width: 100%; height: 100%; object-fit: contain; }
.kf-gallery__stage { aspect-ratio: 4 / 3; padding: 16px; }
.kf-gallery__thumbs { display: flex; max-width: 100%; overflow-x: auto; padding: 4px; }
.kf-gallery__thumb { flex: 0 0 80px; min-height: 64px; padding: 4px; }
.kf-gallery__thumb img { display: block; width: 100%; height: 56px; object-fit: contain; }
.kf-gallery__thumb.is-active { outline: 2px solid var(--focus); outline-offset: -2px; }
.kf-gallery__summary { margin-top: 16px; padding: 16px; border-radius: var(--radius-control); background: var(--surface); box-shadow: var(--elev-1); }
.kf-gallery__summary > span,
.kf-gallery__summary > a { color: var(--muted); font-size: var(--text-micro); }
.kf-gallery__summary .kf-price { margin-block: 4px; }
.kf-site-search__option--product:has(.kf-site-search__visual) { display: grid; grid-template-columns: 56px minmax(0, 1fr); column-gap: 12px; }
.kf-site-search__visual { grid-row: 1 / 3; width: 56px; height: 56px; border-radius: var(--radius-control); }
.kf-site-search__visual img { display: block; width: 100%; height: 100%; object-fit: contain; }
.kf-site-search__option--product > small { grid-column: 2; }

.kf-gallery__stage[aria-busy="true"] img { opacity: 0.5; }
.kf-gallery__stage[aria-busy="true"]::after,
.kf-gallery__stage[data-image-error]::after { position: absolute; inset: auto 16px 16px; padding: 8px 12px; border-radius: var(--radius-control); background: var(--surface); color: var(--ink); font-size: var(--text-small); text-align: center; }
.kf-gallery__stage[aria-busy="true"]::after { content: 'Loading image…'; }
.kf-gallery__stage[data-image-error]::after { content: 'Image unavailable. Please select another view.'; }

/* Owner-supplied installation photographs: keep portrait and landscape frames intact. */
.kf-installation-gallery,
.kf-installation-preview {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 32px 24px;
    align-items: start;
}
.kf-installation-preview { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.kf-installation-card { min-width: 0; }
.kf-installation-image {
    margin: 0;
    aspect-ratio: 4 / 3;
    overflow: hidden;
    border-radius: var(--radius-card);
    background: var(--surface-soft);
}
.kf-installation-image img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: contain;
}
.kf-installation-card__body { padding-top: 24px; }
.kf-installation-type { margin-bottom: 12px; font-size: var(--text-lead); }
.kf-installation-caption { margin-bottom: 16px; color: var(--muted); }
.kf-installation-preview + .kf-text-link { display: inline-block; margin-top: 32px; }
@media (max-width: 767px) {
    .kf-installation-gallery,
    .kf-installation-preview { grid-template-columns: minmax(0, 1fr); }
}

/* Homepage hero: static product image with three product tiles (0.9.0). */
.kf-home-hero__media { display: grid; gap: 24px; min-width: 0; }
.kf-asset--hero img { object-fit: contain; background: transparent; }
.kf-hero-tiles { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.kf-hero-tile { min-width: 0; }
.kf-hero-tile__link { display: block; color: inherit; text-decoration: none; }
.kf-hero-tile__image { margin: 0; aspect-ratio: 1 / 1; }
.kf-hero-tile__image img { display: block; width: 100%; height: 100%; object-fit: contain; background: transparent; border-radius: 0; }
.kf-hero-tile__label { display: block; margin-top: 10px; text-align: center; font-size: var(--text-small); color: var(--muted); }
a.kf-hero-tile__link:hover .kf-hero-tile__label, a.kf-hero-tile__link:focus-visible .kf-hero-tile__label { text-decoration: underline; color: var(--ink); }
@media (max-width: 767px) { .kf-hero-tiles { gap: 12px; } }

/* Enquiry form refinements (0.9.1). */
.kf-field > .kf-field__label {
    color: var(--ink);
    font-size: var(--text-small);
    font-weight: 700;
    letter-spacing: normal;
    text-transform: none;
}

.kf-required {
    color: var(--accent);
    font-size: inherit;
    font-weight: 800;
    letter-spacing: 0;
    text-transform: none;
}

.kf-file-list {
    display: grid;
    gap: 4px;
    margin: 0;
    padding-inline-start: 20px;
    color: var(--muted);
    font-size: var(--text-micro);
    font-weight: 500;
}

.kf-file-list li {
    min-width: 0;
    overflow-wrap: anywhere;
}

.kf-file-list[hidden],
.kf-file-error[hidden] {
    display: none;
}

.kf-file-error,
.kf-field > .kf-file-error {
    color: var(--accent);
    font-size: var(--text-micro);
    font-weight: 700;
    letter-spacing: 0;
    text-transform: none;
}

.kf-dialog {
    width: min(560px, calc(100% - 32px));
    max-height: calc(100% - 32px);
    margin: auto;
    padding: 0;
    overflow: auto;
    border: 1px solid var(--line);
    border-radius: var(--radius-card);
    background: var(--surface);
    color: var(--ink);
    box-shadow: var(--elev-3);
}

.kf-dialog:not([open]) {
    display: none;
}

.kf-dialog::backdrop {
    background: rgba(11, 18, 24, 0.72);
    backdrop-filter: blur(4px);
}

.kf-dialog__surface {
    display: grid;
    gap: 20px;
    padding: clamp(24px, 5vw, 40px);
}

.kf-dialog h2,
.kf-dialog p {
    margin: 0;
}

.kf-dialog p {
    color: var(--muted);
}

.kf-dialog .kf-button-row {
    justify-content: flex-end;
}

@media (max-width: 479px) {
    .kf-dialog .kf-button {
        width: 100%;
    }
}

.kf-asset--hero img { box-shadow: none; }

/* Enquiry form UX (0.9.2). */
.kf-inquiry-product-rows {
    display: grid;
}

.kf-inquiry-product-row > .kf-product-remove {
    grid-column: 1 / -1;
    min-width: 24px;
    min-height: 32px;
    justify-self: end;
    padding: 4px 2px;
    color: var(--muted);
}

.kf-inquiry-product-row > .kf-product-remove:hover,
.kf-inquiry-product-row > .kf-product-remove:focus-visible {
    color: var(--ink);
}

.kf-inquiry-products > .kf-product-add {
    justify-self: start;
}

.kf-field > .kf-field-error,
.kf-consent > .kf-field-error {
    margin: 0;
    color: var(--accent);
    font-size: var(--text-micro);
    font-weight: 700;
    letter-spacing: 0;
    line-height: 1.45;
    text-transform: none;
}

.kf-inquiry-form :is(input:not([type="checkbox"]):not([type="file"]), textarea, select)[aria-invalid="true"] {
    border-color: var(--accent);
    box-shadow: 0 0 0 1px var(--accent);
}

.kf-file-control {
    cursor: pointer;
}

.kf-file-field:has(input[type="file"]:focus-visible) .kf-file-control,
.kf-file-field:has(input[type="file"][aria-invalid="true"]) .kf-file-control {
    border-color: var(--accent);
    outline: 3px solid var(--focus);
    outline-offset: 3px;
}

.kf-file-list {
    gap: 8px;
    padding: 0;
    list-style: none;
}

.kf-file-list li {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: start;
    gap: 8px 16px;
}

.kf-file-remove,
.kf-file-clear {
    min-width: 24px;
    min-height: 32px;
    padding: 4px 2px;
    color: var(--muted);
    font-size: var(--text-micro);
    font-weight: 700;
}

.kf-file-remove:hover,
.kf-file-remove:focus-visible,
.kf-file-clear:hover,
.kf-file-clear:focus-visible {
    color: var(--ink);
}

.kf-file-clear {
    justify-self: start;
}

.kf-consent {
    flex-wrap: wrap;
    row-gap: 4px;
}

.kf-consent > label {
    cursor: pointer;
}

.kf-consent > a {
    color: var(--ink);
}

.kf-consent > input[aria-invalid="true"] {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

.kf-consent > .kf-field-error {
    flex: 0 0 100%;
    margin-left: 28px;
}

.kf-form-success {
    margin: 40px 0 0;
    padding: 32px;
    border-radius: var(--radius-card);
    background: var(--surface);
    color: var(--ink);
    box-shadow: var(--elev-2);
}

@media (max-width: 560px) {
    .kf-inquiry-product-row {
        grid-template-columns: 1fr;
    }

    .kf-inquiry-product-row > .kf-product-remove,
    .kf-file-remove {
        justify-self: start;
        text-align: left;
    }

    .kf-file-list li {
        grid-template-columns: 1fr;
    }

    .kf-consent > .kf-field-error {
        margin-left: 0;
    }

    .kf-form-success {
        padding: 20px;
    }
}

/* Phase six: local enquiry aids and hero alignment. */
.kf-home-hero__grid { align-items: stretch; }
.kf-home-hero__content { display: grid; align-content: space-between; grid-template-rows: auto 1fr auto auto; }
.kf-home-hero__content h1 { align-self: start; }

.kf-enquiry-action { display: flex; flex-wrap: wrap; gap: 8px; }
.kf-enquiry-action [data-enquiry-feedback] { flex-basis: 100%; }
.kf-enquiry-action [data-enquiry-feedback]:empty { display: none; }
.kf-enquiry-list-notice { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin-top: 24px; padding: 16px; border: 1px solid var(--line); border-radius: var(--radius-card); }
.kf-enquiry-list-notice p { margin: 0; }
.kf-enquiry-list-notice [data-enquiry-overflow] { flex-basis: 100%; }
.kf-recent { padding-block: 32px; }
.kf-product-page > .kf-recent > .kf-recent__inner { width: min(calc(100% - 48px), var(--container-max)); margin-inline: auto; }
.kf-recent__heading { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 16px; }
.kf-recent__heading h2 { margin: 0; font-size: var(--text-h3); }
.kf-recent__list { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 180px), 1fr)); gap: 12px; margin: 0; padding: 0; list-style: none; }
.kf-recent__link { display: flex; align-items: center; gap: 12px; min-height: 88px; padding: 12px; border: 1px solid var(--line); border-radius: var(--radius-card); color: var(--ink); text-decoration: none; }
.kf-recent__link:hover { border-color: var(--accent); }
.kf-recent__link img { flex: 0 0 64px; width: 64px; height: 64px; border-radius: 8px; object-fit: contain; }
.kf-recent__link span { overflow-wrap: anywhere; }
.kf-enquiry-action[hidden], .kf-enquiry-action [hidden], .kf-enquiry-list-notice[hidden], .kf-enquiry-list-notice [hidden], .kf-recent[hidden] { display: none; }

@media (max-width: 767px) {
    .kf-home-hero__content { display: block; }
    .kf-product-page > .kf-recent > .kf-recent__inner { width: calc(100% - 32px); }
}