/* =========================================================
   Exothermic Welding Kit — Amiable Impex
   Palette from the logo: charcoal #2B2A29, red #EA3238, green #A9CE49
   ========================================================= */

@font-face {
    font-family: "Sora";
    src: url("../fonts/sora-var.woff2") format("woff2");
    font-weight: 100 800;
    font-display: swap;
}

@font-face {
    font-family: "Fraunces";
    src: url("../fonts/fraunces-var.woff2") format("woff2");
    font-weight: 100 900;
    font-display: swap;
}

@font-face {
    font-family: "Manrope";
    src: url("../fonts/manrope-var.woff2") format("woff2");
    font-weight: 200 800;
    font-display: swap;
}

@font-face {
    font-family: "Instrument Serif";
    src: url("../fonts/instrument-serif-italic.woff2") format("woff2");
    font-weight: 400;
    font-style: italic;
    font-display: swap;
}

:root {
    --ink: #2B2A29;
    --ink-900: #1C1B1A;
    --ink-950: #131212;
    --red: #EA3238;
    --red-700: #C9262C;
    --green: #A9CE49;

    --bg: #F5F3EF;
    --surface: #FFFFFF;
    --stone: #EDEAE5;
    --line: #E2DED8;
    --line-dark: rgba(255, 255, 255, .1);
    --muted: #6B6762;
    --text: #2B2A29;

    --font-head: "Sora", "Segoe UI", system-ui, sans-serif;
    --font-display: "Fraunces", Georgia, serif;
    --font-body: "Manrope", "Segoe UI", system-ui, sans-serif;
    --font-serif: "Instrument Serif", Georgia, serif;

    --container: 1440px;
    --gutter: clamp(18px, 3vw, 48px);
    --radius: 6px;
    --ease: cubic-bezier(.22, .61, .36, 1);
    --header-h: 80px;
}

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

html {
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
    scroll-padding-top: calc(var(--header-h) + 16px);
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
    overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }
h1, h2, h3, h4, h5, h6 {
    margin: 0;
    font-family: var(--font-display);
    font-weight: 600;
    line-height: 1.25;
    letter-spacing: -.01em;
    color: var(--ink);
}
em { font-style: normal; }
/* Heading accents stay in the heading font, never italic */
:is(h1, h2, h3, h4, h5, h6) em { font-family: inherit; font-style: normal; }
ul, ol { margin: 0; padding: 0; list-style: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; padding: 0; }
address { font-style: normal; }
:focus-visible { outline: 2px solid var(--red); outline-offset: 3px; }

.icon { width: 1.1em; height: 1.1em; flex: none; }

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
}

.container {
    width: 100%;
    max-width: calc(var(--container) + var(--gutter) * 2);
    margin-inline: auto;
    padding-inline: var(--gutter);
}

.skip-link {
    position: absolute;
    left: 16px;
    top: -60px;
    z-index: 100;
    padding: 10px 16px;
    background: var(--ink);
    color: #fff;
}
.skip-link:focus { top: 12px; }

/* ---------- Type helpers ---------- */
.label {
    display: inline-flex;
    align-items: center;
    gap: 14px;
    margin: 0 0 28px;
    font-family: var(--font-head);
    font-size: 12px;
    font-weight: 500;
    line-height: 1;
    letter-spacing: .22em;
    text-transform: uppercase;
    color: var(--muted);
}
.label::before {
    content: "";
    width: 28px;
    height: 1px;
    background: var(--red);
}
.label--light { color: rgba(255, 255, 255, .6); }

.section { padding-block: clamp(80px, 10vw, 136px); }

.section-title {
    font-size: clamp(26px, 2.8vw, 38px);
    line-height: 1.25;
}

/* ---------- Buttons & links ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 14px;
    min-height: 54px;
    padding: 0 30px;
    border-radius: 2px;
    font-family: var(--font-head);
    font-size: 12.5px;
    font-weight: 500;
    letter-spacing: .14em;
    text-transform: uppercase;
    white-space: nowrap;
    transition: background-color .3s, color .3s, border-color .3s;
}
.btn--primary { background: var(--red); color: #fff; }
.btn--primary:hover { background: var(--red-700); }
.btn--outline {
    border: 1px solid rgba(255, 255, 255, .34);
    background: rgba(255, 255, 255, .02);
    color: #fff;
}
.btn--outline:hover { border-color: #fff; color: var(--ink); }
.btn .icon { width: 18px; height: 18px; transition: transform .3s var(--ease); }
.btn:hover .icon { transform: translateX(4px); }
.btn--outline:hover .icon { transform: translateY(2px); }

.link-line {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding-block: 6px;
    font-family: var(--font-head);
    font-size: 12.5px;
    font-weight: 500;
    letter-spacing: .14em;
    text-transform: uppercase;
    color: var(--ink);
    background: linear-gradient(currentColor, currentColor) left bottom / 100% 1px no-repeat;
    transition: color .3s, background-size .4s var(--ease);
}
.link-line .icon { transition: transform .3s var(--ease); }
.link-line:hover { color: var(--red); }
.link-line:hover .icon { transform: translateX(4px); }
.link-line--light { color: #fff; }
.link-line--light:hover { color: var(--green); }

/* ---------- Top bar ---------- */
.topbar {
    background: var(--ink-950);
    color: rgba(255, 255, 255, .68);
    font-size: 12px;
    letter-spacing: .04em;
}
.topbar__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    min-height: 38px;
}
.topbar__signal {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin: 0;
    font-family: var(--font-head);
    font-size: 10.5px;
    font-weight: 500;
    letter-spacing: .16em;
    text-transform: uppercase;
}
.topbar__signal span {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--green);
    box-shadow: 0 0 0 4px rgba(169, 206, 73, .1);
}
.topbar__contact { display: flex; flex-wrap: wrap; gap: 6px 26px; }
.topbar a { display: inline-flex; align-items: center; gap: 8px; transition: color .2s; }
.topbar a:hover { color: #fff; }
.topbar .icon { color: var(--red); width: 14px; height: 14px; }
.topbar .topbar__wa .icon { color: var(--green); }

/* ---------- Header ---------- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(250, 249, 247, .93);
    backdrop-filter: saturate(150%) blur(18px);
    -webkit-backdrop-filter: saturate(150%) blur(18px);
    border-bottom: 1px solid var(--line);
    transition: box-shadow .3s, background-color .3s;
}
.site-header.is-scrolled {
    background: rgba(255, 255, 255, .97);
    box-shadow: 0 14px 40px -30px rgba(19, 18, 18, .6);
}
.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    height: var(--header-h);
}

.brand { display: inline-flex; align-items: center; padding-right: 28px; border-right: 1px solid var(--line); }
.brand img { width: 154px; height: auto; }

.nav { display: flex; align-items: center; gap: 2px; }
.nav__item { position: relative; }
.nav__link {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 12px 13px;
    font-family: var(--font-head);
    font-size: 13px;
    font-weight: 500;
    letter-spacing: .015em;
    color: var(--ink);
    transition: color .25s;
}
.nav__link .icon { width: 14px; height: 14px; transition: transform .3s var(--ease); }
.nav__link::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: 3px;
    width: 18px;
    height: 1px;
    margin-left: -9px;
    background: var(--red);
    opacity: 0;
    transition: opacity .25s;
}
.nav__link:hover { color: var(--red); }
.nav__link.is-active { color: var(--ink); font-weight: 500; }
.nav__link.is-active::after { opacity: 1; }

.nav__link--cta {
    margin-left: 14px;
    padding: 12px 20px;
    border: 1px solid var(--red);
    border-radius: 999px;
    color: var(--red);
    font-size: 12px;
    font-weight: 500;
    letter-spacing: .14em;
    text-transform: uppercase;
    transition: background-color .3s, color .3s, border-color .3s;
}
.nav__link--cta::after { display: none; }
.nav__link--cta:hover,
.nav__link--cta.is-active { background: var(--red); border-color: var(--red); color: #fff; }

.nav__sub {
    position: absolute;
    top: calc(100% + 14px);
    left: 50%;
    min-width: 280px;
    padding: 8px 0;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 4px;
    box-shadow: 0 24px 60px -28px rgba(19, 18, 18, .4);
    opacity: 0;
    visibility: hidden;
    transform: translate(-50%, 6px);
    transition: opacity .25s, transform .3s var(--ease), visibility .25s;
}
.nav__sub::before {
    content: "";
    position: absolute;
    inset: -16px 0 auto;
    height: 16px;
}
.nav__sub-link {
    display: block;
    padding: 11px 22px;
    font-size: 14px;
    font-weight: 500;
    color: var(--ink);
    transition: background-color .25s, color .25s;
}
.nav__sub-link:hover,
.nav__sub-link.is-active { background: var(--bg); color: var(--red); }

.nav-toggle { display: none; }

@media (min-width: 1181px) {
    .has-sub:hover .nav__sub,
    .has-sub:focus-within .nav__sub {
        opacity: 1;
        visibility: visible;
        transform: translate(-50%, 0);
    }
    .has-sub:hover .nav__sub-toggle .icon,
    .has-sub:focus-within .nav__sub-toggle .icon { transform: rotate(180deg); }
}

/* Mobile navigation */
@media (max-width: 1180px) {
    :root { --header-h: 70px; }

    /* backdrop-filter would trap the fixed off-canvas panel inside the header */
    .site-header { background: #fff; backdrop-filter: none; -webkit-backdrop-filter: none; }
    .brand { padding-right: 0; border-right: 0; transition: opacity .2s; }
    .nav-open .brand { opacity: 0; }
    .nav-open { overflow: hidden; }

    .nav-toggle {
        position: relative;
        z-index: 60;
        display: grid;
        place-content: center;
        gap: 6px;
        width: 44px;
        height: 44px;
    }
    .nav-toggle span {
        display: block;
        width: 24px;
        height: 1.5px;
        background: var(--ink);
        transition: transform .35s var(--ease), opacity .2s;
    }
    .nav-open .nav-toggle span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
    .nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
    .nav-open .nav-toggle span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }

    .site-nav {
        position: fixed;
        inset: 0 0 0 auto;
        z-index: 55;
        width: min(380px, 88vw);
        padding: 96px 28px 32px;
        background: var(--surface);
        overflow-y: auto;
        transform: translateX(100%);
        visibility: hidden;
        transition: transform .45s var(--ease), visibility .45s;
    }
    .nav-open .site-nav { transform: none; visibility: visible; }

    .nav-open::after {
        content: "";
        position: fixed;
        inset: 0;
        z-index: 45;
        background: rgba(19, 18, 18, .45);
    }

    .nav { flex-direction: column; align-items: stretch; gap: 0; }
    .nav__item { border-bottom: 1px solid var(--line); }
    .nav__link {
        width: 100%;
        justify-content: space-between;
        padding: 16px 2px;
        font-size: 15px;
    }
    .nav__link::after { display: none; }
    .nav__link.is-active { color: var(--red); }
    .nav__item:has(.nav__link--cta) { border-bottom: 0; }
    .nav__link--cta { margin: 24px 0 0; justify-content: center; padding: 15px 22px; }

    .nav__sub {
        position: static;
        min-width: 0;
        padding: 0 0 12px;
        border: 0;
        box-shadow: none;
        opacity: 1;
        visibility: visible;
        transform: none;
        display: none;
    }
    .nav__sub::before { display: none; }
    .nav__sub-link { padding: 10px 14px; }
    .has-sub.is-open .nav__sub { display: block; }
    .has-sub.is-open .nav__sub-toggle .icon { transform: rotate(180deg); }
}

@media (max-width: 640px) {
    .topbar__inner { justify-content: center; }
    .topbar__signal,
    .topbar .topbar__wa,
    .topbar__contact a:first-child { display: none; }
    .topbar__contact { justify-content: center; gap: 4px 20px; font-size: 12px; }
    .brand img { width: 130px; }
}

/* ---------- Page transition (Swup) ---------- */
.transition-fade { transition: opacity .18s ease; }
html.is-animating .transition-fade { opacity: 0; }

/* ---------- Reveal on scroll ---------- */
.js [data-reveal] {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity .9s var(--ease), transform .9s var(--ease);
}
.js [data-reveal="left"] { transform: translateX(-42px); }
.js [data-reveal="right"] { transform: translateX(42px); }
.js .hero__visual[data-reveal] { transition-delay: .14s; }
.js [data-reveal].is-visible { opacity: 1; transform: none; }

/* ---------- Hero ---------- */
.hero {
    position: relative;
    isolation: isolate;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    min-height: max(660px, calc(100svh - 118px));
    background: var(--ink-950);
    color: rgba(255, 255, 255, .62);
    padding-top: clamp(64px, 7vw, 104px);
}
.hero__bg { position: absolute; inset: 0; z-index: -1; pointer-events: none; }
.hero__texture,
.hero__glow,
.hero__grain { position: absolute; inset: 0; }
.hero__texture { background: url("../images/hero-texture.webp") center / cover no-repeat; }
.hero__glow {
    background:
        radial-gradient(36% 56% at 76% 46%, rgba(234, 50, 56, .2), transparent 72%),
        radial-gradient(30% 40% at 4% 100%, rgba(169, 206, 73, .05), transparent 70%),
        linear-gradient(180deg, rgba(19, 18, 18, .2) 0%, transparent 30%, rgba(19, 18, 18, .85) 100%),
        linear-gradient(90deg, rgba(19, 18, 18, .95) 0%, rgba(19, 18, 18, .8) 42%, rgba(19, 18, 18, .45) 100%);
}
.hero__blueprint {
    position: absolute;
    top: 50%;
    right: -8%;
    width: min(64vw, 920px);
    aspect-ratio: 1;
    transform: translateY(-50%);
    background: url("../images/hero-blueprint.svg") center / contain no-repeat;
    opacity: .09;
}
.hero__grain {
    background: url("../images/grain.svg");
    opacity: .06;
}
.hero__lines {
    position: absolute;
    inset: 0;
    width: min(100%, calc(var(--container) + var(--gutter) * 2));
    margin-inline: auto;
    border-inline: 1px solid rgba(255, 255, 255, .06);
}

.hero__inner {
    flex: 1;
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.08fr);
    align-items: center;
    gap: clamp(48px, 6vw, 104px);
}

.hero__kicker {
    display: flex;
    align-items: center;
    gap: 14px;
    margin: 0 0 30px;
    font-family: var(--font-head);
    font-size: 11px;
    font-weight: 500;
    letter-spacing: .26em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, .55);
}
.hero__kicker span { width: 36px; height: 1px; background: var(--red); }

.hero__title {
    color: #fff;
    font-size: clamp(38px, 3.9vw, 60px);
    font-weight: 600;
    line-height: 1.08;
    letter-spacing: -.02em;
}
.hero__title em { color: var(--red); }
.hero__title-sub {
    display: block;
    margin-top: .4em;
    font-size: .46em;
    font-weight: 400;
    line-height: 1.3;
    letter-spacing: 0;
    color: rgba(255, 255, 255, .75);
}

.hero__lead {
    max-width: 500px;
    margin-top: 34px;
    font-size: clamp(15px, 1.1vw, 17px);
    line-height: 1.85;
}

.hero__actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 18px 38px;
    margin-top: 46px;
}

/* Product plate with registration corners */
.hero__visual { position: relative; padding: 18px; }
.hero__visual::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        linear-gradient(var(--red), var(--red)) left top / 24px 1px,
        linear-gradient(var(--red), var(--red)) left top / 1px 24px,
        linear-gradient(var(--red), var(--red)) right top / 24px 1px,
        linear-gradient(var(--red), var(--red)) right top / 1px 24px,
        linear-gradient(var(--red), var(--red)) left bottom / 24px 1px,
        linear-gradient(var(--red), var(--red)) left bottom / 1px 24px,
        linear-gradient(var(--red), var(--red)) right bottom / 24px 1px,
        linear-gradient(var(--red), var(--red)) right bottom / 1px 24px;
    background-repeat: no-repeat;
    opacity: .85;
}
.plate {
    position: relative;
    margin: 0;
    background: #fff;
    border-radius: 2px;
    box-shadow: 0 60px 110px -50px rgba(0, 0, 0, .95);
}
.plate__media { padding: clamp(28px, 3.8vw, 56px); }
.plate__media img { width: 100%; }
.plate__caption {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 16px clamp(18px, 2vw, 26px);
    border-top: 1px solid var(--line);
    font-family: var(--font-head);
    font-size: 10.5px;
    font-weight: 500;
    letter-spacing: .2em;
    text-transform: uppercase;
    color: var(--muted);
}
.plate__dots { display: flex; gap: 6px; }
.plate__dots i { width: 7px; height: 7px; border-radius: 50%; background: var(--ink); }
.plate__dots i:nth-child(2) { background: var(--red); }
.plate__dots i:nth-child(3) { background: var(--green); }

/* Product strip */
.hero__strip {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    margin-top: clamp(56px, 7vw, 96px);
    border-top: 1px solid var(--line-dark);
}
.hero__strip li { position: relative; }
.hero__strip li + li { border-left: 1px solid var(--line-dark); }
.hero__strip li::before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: -1px;
    height: 1px;
    background: var(--red);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform .6s var(--ease);
}
.hero__strip li:hover::before { transform: scaleX(1); }
.hero__strip a {
    display: flex;
    align-items: baseline;
    gap: 16px;
    padding: 28px clamp(18px, 2.6vw, 40px) 32px;
    font-family: var(--font-head);
    font-size: 13px;
    letter-spacing: .04em;
    color: rgba(255, 255, 255, .8);
    transition: color .3s;
}
.hero__strip li:first-child a { padding-left: 0; }
.hero__strip a:hover { color: #fff; }
.hero__strip-num {
    font-family: var(--font-serif);
    font-style: italic;
    font-size: 20px;
    letter-spacing: 0;
    color: var(--red);
}
.hero__strip-name { flex: 1; }
.hero__strip .icon {
    align-self: center;
    width: 16px;
    height: 16px;
    color: rgba(255, 255, 255, .3);
    transition: color .3s, transform .3s var(--ease);
}
.hero__strip a:hover .icon { color: var(--red); transform: translateX(4px); }

/* Calm entrance on load */
@keyframes hero-rise {
    from { opacity: 0; transform: translateY(14px); }
    to { opacity: 1; transform: none; }
}
@keyframes hero-fade {
    from { opacity: 0; }
    to { opacity: 1; }
}
.hero__copy > * { animation: hero-rise 1s var(--ease) both; }
.hero__copy > :nth-child(2) { animation-delay: .08s; }
.hero__copy > :nth-child(3) { animation-delay: .16s; }
.hero__copy > :nth-child(4) { animation-delay: .24s; }
.hero__visual { animation: hero-fade 1.4s var(--ease) .2s both; }
.hero__strip li { animation: hero-fade 1s var(--ease) both; }
.hero__strip li:nth-child(1) { animation-delay: .4s; }
.hero__strip li:nth-child(2) { animation-delay: .5s; }
.hero__strip li:nth-child(3) { animation-delay: .6s; }

/* ---------- About Founder ---------- */
.founder { background: var(--surface); }
.founder__inner {
    max-width: 920px;
    text-align: center;
}
.founder .label { justify-content: center; }
.founder .label::after {
    content: "";
    width: 28px;
    height: 1px;
    background: var(--red);
}
.founder__text {
    margin-bottom: 40px;
    font-family: var(--font-head);
    font-size: clamp(21px, 2.3vw, 30px);
    font-weight: 300;
    line-height: 1.6;
    letter-spacing: -.01em;
    color: var(--ink);
}
.founder__text em {
    font-family: var(--font-serif);
    font-style: italic;
    font-size: 1.12em;
    color: var(--red);
}

/* ---------- Interactive kit process ---------- */
.kit-process {
    overflow: hidden;
    background:
        linear-gradient(rgba(33, 32, 30, .025) 1px, transparent 1px),
        linear-gradient(90deg, rgba(33, 32, 30, .025) 1px, transparent 1px),
        #f7f6f2;
    background-size: 54px 54px;
}
.kit-process__intro {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(300px, .72fr);
    gap: clamp(40px, 8vw, 120px);
    align-items: end;
    margin-bottom: clamp(48px, 6vw, 72px);
}
.kit-process__intro .label { margin-bottom: 18px; color: var(--red); }
.kit-process__intro .section-title {
    max-width: 710px;
    font-size: clamp(34px, 4.2vw, 54px);
    font-weight: 600;
    line-height: 1.08;
}
.kit-process__intro .section-title em {
    font-weight: 600;
    color: var(--red);
}
.kit-process__intro-copy { padding-bottom: 4px; }
.kit-process__intro-copy > p { max-width: 520px; margin-bottom: 28px; font-size: 15.5px; color: var(--muted); }

.process-path {
    position: relative;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    margin-bottom: 18px;
    border-top: 1px solid rgba(33, 32, 30, .14);
    border-bottom: 1px solid rgba(33, 32, 30, .14);
}
.process-path__step {
    position: relative;
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 14px;
    align-items: center;
    min-width: 0;
    padding: 22px clamp(14px, 2vw, 26px);
    border: 0;
    border-right: 1px solid rgba(33, 32, 30, .12);
    background: transparent;
    color: var(--ink);
    text-align: left;
    cursor: pointer;
    transition: background .3s, color .3s;
}
.process-path__step:last-child { border-right: 0; }
.process-path__step:hover { background: rgba(255, 255, 255, .62); }
.process-path__step.is-active { background: var(--ink-900); color: #fff; }
.process-path__number {
    font-family: var(--font-serif);
    font-size: 15px;
    font-style: italic;
    color: var(--red);
}
.process-path__copy { display: grid; min-width: 0; }
.process-path__copy strong { font-family: var(--font-head); font-size: 13px; font-weight: 500; letter-spacing: .015em; }
.process-path__copy small { overflow: hidden; margin-top: 3px; color: var(--muted); font-size: 10px; letter-spacing: .08em; text-overflow: ellipsis; text-transform: uppercase; white-space: nowrap; }
.process-path__step.is-active .process-path__copy small { color: rgba(255, 255, 255, .48); }
.process-path__mark { width: 5px; height: 5px; border-radius: 50%; background: rgba(33, 32, 30, .16); }
.process-path__step.is-active .process-path__mark { background: var(--green); box-shadow: 0 0 0 5px rgba(169, 206, 73, .08); }

.kit-explorer {
    display: grid;
    grid-template-columns: minmax(280px, 330px) minmax(0, 1fr);
    min-height: 610px;
    border: 1px solid rgba(33, 32, 30, .13);
    background: #fff;
    box-shadow: 0 24px 80px rgba(32, 30, 26, .08);
}
.kit-explorer__rail {
    min-width: 0;
    padding: 22px 16px 16px;
    background:
        radial-gradient(280px 220px at 0 0, rgba(169, 206, 73, .07), transparent 72%),
        var(--ink-900);
    color: #fff;
}
.kit-explorer__rail-head {
    display: flex;
    justify-content: space-between;
    padding: 0 10px 18px;
    font-family: var(--font-head);
    font-size: 9px;
    font-weight: 600;
    letter-spacing: .15em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, .42);
}
.kit-explorer__items {
    max-height: 540px;
    overflow: auto;
    scrollbar-color: rgba(255,255,255,.18) transparent;
    scrollbar-width: thin;
}
.kit-select {
    display: grid;
    grid-template-columns: 30px minmax(0, 1fr) 18px;
    gap: 12px;
    align-items: center;
    width: 100%;
    padding: 13px 10px;
    border: 0;
    border-top: 1px solid rgba(255, 255, 255, .075);
    background: transparent;
    color: rgba(255, 255, 255, .76);
    text-align: left;
    cursor: pointer;
    transition: color .25s, background .25s, padding .3s var(--ease);
}
.kit-select:first-child { border-top: 0; }
.kit-select:hover { background: rgba(255, 255, 255, .045); color: #fff; }
.kit-select.is-active { padding-left: 16px; background: linear-gradient(90deg, rgba(169, 206, 73, .13), rgba(169, 206, 73, 0)); color: #fff; }
.kit-select__num { font-family: var(--font-serif); font-size: 14px; font-style: italic; color: var(--red); }
.kit-select__name { display: grid; font-family: var(--font-head); font-size: 12px; font-weight: 500; line-height: 1.3; }
.kit-select__name small { margin-top: 4px; font-family: var(--font-body); font-size: 10px; font-weight: 400; color: rgba(255, 255, 255, .36); }
.kit-select .icon { width: 15px; color: rgba(255,255,255,.28); transition: transform .3s, color .3s; }
.kit-select.is-active .icon { color: var(--green); transform: translateX(3px); }

.kit-explorer__stage { min-width: 0; }
.kit-panel { display: grid; grid-template-columns: minmax(280px, .78fr) minmax(360px, 1.2fr); height: 100%; min-height: 608px; }
.js .kit-panel:not(.is-active) { display: none; }
.kit-panel[hidden] { display: none; }
.kit-panel.is-active { display: grid; }
.kit-panel__media {
    position: relative;
    overflow: hidden;
    display: grid;
    place-items: center;
    min-height: 100%;
    padding: clamp(42px, 6vw, 78px);
    background:
        radial-gradient(circle at 50% 46%, rgba(255,255,255,.96), rgba(255,255,255,.52) 38%, transparent 67%),
        linear-gradient(135deg, #ecebe5, #f8f7f3);
}
.kit-panel__media::before {
    content: "";
    position: absolute;
    width: 72%;
    aspect-ratio: 1;
    border: 1px solid rgba(33, 32, 30, .09);
    border-radius: 50%;
}
.kit-panel__media::after {
    content: "";
    position: absolute;
    inset: 28px;
    border: 1px solid rgba(33, 32, 30, .06);
    pointer-events: none;
}
.kit-panel__media img {
    position: relative;
    z-index: 1;
    width: auto;
    max-width: 88%;
    max-height: 250px;
    object-fit: contain;
    mix-blend-mode: multiply;
    filter: saturate(.86) contrast(1.04);
}
.kit-panel__phase,
.kit-panel__counter { position: absolute; z-index: 2; font-family: var(--font-head); }
.kit-panel__phase {
    top: 24px;
    left: 28px;
    padding: 7px 10px;
    background: rgba(255, 255, 255, .74);
    font-size: 9px;
    font-weight: 600;
    letter-spacing: .14em;
    text-transform: uppercase;
    color: var(--ink);
    backdrop-filter: blur(8px);
}
.kit-panel__counter { right: 28px; bottom: 24px; font-size: 11px; letter-spacing: .1em; color: var(--muted); }
.kit-panel__counter b { margin-right: 4px; font-family: var(--font-serif); font-size: 22px; font-style: italic; font-weight: 400; color: var(--red); }
.kit-panel__body { align-self: center; padding: clamp(38px, 5.5vw, 76px); }
.kit-panel__meta { display: flex; align-items: center; gap: 10px; margin-bottom: 18px !important; font-family: var(--font-head); font-size: 9px !important; font-weight: 600; letter-spacing: .16em; text-transform: uppercase; color: var(--green-dark) !important; }
.kit-panel__meta span { width: 24px; height: 1px; background: var(--green); }
.kit-panel__body h3 { max-width: 520px; margin-bottom: 18px; font-size: clamp(25px, 2.6vw, 34px); font-weight: 600; line-height: 1.15; }
.kit-panel__lead { max-width: 620px; margin-bottom: 24px !important; font-family: var(--font-head); font-size: 16px !important; line-height: 1.65; color: var(--ink) !important; }
.kit-panel__details { display: grid; gap: 12px; max-width: 650px; }
.kit-panel__details p { margin: 0; font-size: 14px; line-height: 1.72; color: var(--muted); }
.kit-panel__note {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    max-width: 650px;
    margin: 28px 0 0 !important;
    padding: 16px 18px;
    background: rgba(169, 206, 73, .095);
    border-left: 2px solid var(--green);
    font-size: 12.5px !important;
    line-height: 1.55;
    color: var(--ink) !important;
}
.kit-panel__note .icon { flex: none; width: 17px; height: 17px; margin-top: 1px; color: var(--red); }
.kit-panel.is-switching .kit-panel__media { animation: process-in-left .55s var(--ease) both; }
.kit-panel.is-switching .kit-panel__body { animation: process-in-right .55s var(--ease) both; }
@keyframes process-in-left { from { opacity: 0; transform: translateX(-24px); } to { opacity: 1; transform: none; } }
@keyframes process-in-right { from { opacity: 0; transform: translateX(24px); } to { opacity: 1; transform: none; } }

.process-principle {
    display: grid;
    grid-template-columns: 80px minmax(0, 1fr) auto;
    gap: 24px;
    align-items: center;
    margin-top: 34px;
}
.process-principle__line { width: 80px; height: 1px; background: linear-gradient(90deg, var(--red), var(--green)); }
.process-principle p { max-width: 760px; margin: 0; font-size: 13.5px; color: var(--muted); }
.process-principle strong { color: var(--ink); font-weight: 500; }

/* ---------- Inner page banner (shares the homepage hero layers) ---------- */
.inner-hero {
    position: relative;
    isolation: isolate;
    overflow: hidden;
    background: var(--ink-950);
    color: rgba(255, 255, 255, .62);
    padding-top: clamp(52px, 5.5vw, 80px);
}
.inner-hero .hero__blueprint { right: -4%; width: min(52vw, 720px); opacity: .1; }
.inner-hero__content > * { animation: hero-rise 1s var(--ease) both; }
.inner-hero__content > :nth-child(2) { animation-delay: .08s; }
.inner-hero__content > :nth-child(3) { animation-delay: .16s; }
.inner-hero__title {
    margin-bottom: 30px;
    color: #fff;
    font-size: clamp(40px, 4.6vw, 68px);
    line-height: 1.02;
    letter-spacing: -.02em;
}
.inner-hero__title em { color: var(--red); }
.inner-hero .hero__strip { grid-template-columns: none; grid-auto-flow: column; grid-auto-columns: 1fr; margin-top: clamp(40px, 5vw, 64px); }
.inner-hero .hero__strip a { padding-block: 20px 22px; }
.breadcrumbs {
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: var(--font-head);
    font-size: 11px;
    letter-spacing: .14em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, .5);
}
.breadcrumbs a { color: #fff; transition: color .25s; }
.breadcrumbs a:hover { color: var(--red); }
.breadcrumbs .icon { width: 14px; height: 14px; color: var(--red); }

/* ---------- About page ---------- */

.about-story__grid {
    display: grid;
    grid-template-columns: minmax(0, .92fr) minmax(440px, 1.08fr);
    gap: clamp(54px, 8vw, 116px);
    align-items: center;
}
.about-story__copy .label { margin-bottom: 18px; color: var(--red); }
.about-story__copy .section-title { margin-bottom: 30px; font-size: clamp(34px, 4.1vw, 54px); font-weight: 600; line-height: 1.08; }
.about-story__copy .section-title em { color: var(--red); }
.about-story__copy > p:not(.label) { max-width: 680px; font-size: 15px; line-height: 1.85; color: var(--muted); }
.about-story__copy > p + p { margin-top: 18px; }
.about-film { position: relative; padding: 14px; background: #f0eee8; }
.about-film::before {
    content: "";
    position: absolute;
    left: -20px;
    top: -20px;
    width: 82px;
    height: 82px;
    border-left: 1px solid var(--red);
    border-top: 1px solid var(--red);
    pointer-events: none;
}
.about-film__frame { position: relative; overflow: hidden; aspect-ratio: 16 / 9; background: var(--ink-900); }
.about-film__frame iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.about-film__caption { display: flex; align-items: center; justify-content: space-between; padding: 16px 4px 2px; font-family: var(--font-head); font-size: 11px; font-weight: 600; letter-spacing: .11em; text-transform: uppercase; color: var(--ink); }
.about-film__caption a { display: grid; place-items: center; width: 32px; height: 32px; color: var(--red); transition: color .25s, transform .3s var(--ease); }
.about-film__caption a:hover { color: var(--green-dark); transform: translateX(4px); }
.about-film__caption .icon { width: 18px; }

.about-maker {
    position: relative;
    isolation: isolate;
    overflow: hidden;
    background:
        radial-gradient(680px 460px at 0 0, rgba(169, 206, 73, .08), transparent 70%),
        radial-gradient(620px 420px at 100% 100%, rgba(234, 50, 56, .13), transparent 70%),
        var(--ink-900);
    color: rgba(255,255,255,.68);
}
.about-maker__texture { position: absolute; z-index: -1; inset: 0; background: url('../images/grain.svg') repeat; opacity: .1; }
.about-maker::after {
    content: "";
    position: absolute;
    z-index: -1;
    inset: 0;
    background-image: linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
    background-size: 76px 76px;
    mask-image: linear-gradient(to right, transparent, #000 30%, #000);
}
.about-maker__lead { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: 24px clamp(54px, 8vw, 120px); align-items: start; padding-bottom: clamp(52px, 7vw, 82px); border-bottom: 1px solid rgba(255,255,255,.11); }
.about-maker__lead .label { grid-column: 1 / -1; margin-bottom: 2px; color: var(--green); }
.about-maker__lead .section-title { color: #fff; font-size: clamp(34px, 4.2vw, 54px); font-weight: 600; line-height: 1.08; }
.about-maker__lead .section-title em { display: block; color: var(--green); }
.about-maker__lead > p { max-width: 720px; margin: 0; font-size: 15px; line-height: 1.85; }
.about-maker__lead > p + p { grid-column: 2; margin-top: -52px; padding-top: 14px; border-top: 1px solid rgba(169,206,73,.24); }
.about-maker a { color: #fff; border-bottom: 1px solid rgba(169,206,73,.5); }
.about-maker a:hover { color: var(--green); }
.about-maker__content { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(320px, .9fr); gap: clamp(56px, 8vw, 120px); padding-top: clamp(52px, 7vw, 82px); }
.about-maker__content h3 { margin-bottom: 24px; font-size: 22px; font-weight: 600; color: #fff; }
.about-maker__content p { font-size: 14.5px; line-height: 1.85; color: rgba(255,255,255,.62); }
.about-maker__supply ul { display: grid; gap: 0; margin-top: 28px; }
.about-maker__supply li { position: relative; padding: 16px 0 16px 30px; border-top: 1px solid rgba(255,255,255,.09); font-family: var(--font-head); font-size: 13px; line-height: 1.6; color: rgba(255,255,255,.86); }
.about-maker__supply li::before { content: ""; position: absolute; left: 3px; top: 23px; width: 8px; height: 8px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 5px rgba(169,206,73,.07); }
.about-maker__assurance { align-self: start; padding: 30px; background: rgba(255,255,255,.045); border-top: 2px solid var(--red); }
.about-maker__assurance p + p { margin-top: 22px; padding-top: 22px; border-top: 1px solid rgba(255,255,255,.09); }

.about-vision { background: #f7f6f2; }
.about-vision__grid { display: grid; grid-template-columns: minmax(0, .7fr) minmax(0, 1.3fr); gap: clamp(40px, 6vw, 96px); align-items: start; }
.about-vision__head { position: sticky; top: calc(var(--header-h) + 32px); }
.about-vision__head .section-title { margin-bottom: 18px; font-size: clamp(32px, 3.6vw, 46px); }
.about-vision__head .section-title em { color: var(--red); }
.about-vision__head p { max-width: 380px; margin: 0; font-size: 14.5px; line-height: 1.8; color: var(--muted); }
.vision-points { counter-reset: vision; border-top: 1px solid var(--line); }
.vision-points li { counter-increment: vision; display: grid; grid-template-columns: 40px minmax(0, 1fr); gap: 12px; padding: 14px 0; border-bottom: 1px solid var(--line); font-size: 15px; line-height: 1.7; color: var(--ink); }
.vision-points li::before { content: counter(vision, decimal-leading-zero); padding-top: 2px; font-family: var(--font-head); font-size: 11px; font-weight: 600; letter-spacing: .12em; color: var(--red); }
.about-values { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: clamp(48px, 6vw, 80px); }
.about-values li { position: relative; padding: 30px 28px 32px; background: #fff; border: 1px solid var(--line); border-radius: 2px; transition: border-color .3s; }
.about-values li::before { content: ""; position: absolute; left: -1px; right: -1px; top: -1px; height: 2px; background: var(--red); transform: scaleX(.18); transform-origin: left; transition: transform .6s var(--ease); }
.about-values li:hover { border-color: #d6d1ca; }
.about-values li:hover::before { transform: scaleX(1); }
.about-values__num { display: block; margin-bottom: 22px; font-family: var(--font-head); font-size: 11px; font-weight: 600; letter-spacing: .14em; color: var(--red); }
.about-values h3 { margin-bottom: 12px; font-size: 18px; font-weight: 600; line-height: 1.35; }
.about-values p { margin: 0; font-size: 13.5px; line-height: 1.75; color: var(--muted); }
.about-values p + p { margin-top: 10px; }

.about-explore { background: #fff; }
.about-explore__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(18px, 2.6vw, 34px); }
.about-explore__card { display: block; color: var(--ink); }
.about-explore__media { position: relative; overflow: hidden; display: grid; place-items: center; aspect-ratio: 3 / 2; background: #f1f0eb; }
.about-explore__media::after { content: ""; position: absolute; inset: 14px; border: 1px solid rgba(255,255,255,.56); pointer-events: none; }
.about-explore__media img { width: 100%; height: 100%; object-fit: cover; transition: transform .8s var(--ease), filter .5s; }
.about-explore__card:nth-child(n+2) .about-explore__media img { width: 86%; height: 86%; object-fit: contain; mix-blend-mode: multiply; }
.about-explore__title { display: flex; align-items: center; justify-content: space-between; gap: 18px; padding: 22px 2px 0; }
.about-explore__title h3 { font-size: clamp(16px, 1.6vw, 20px); font-weight: 600; }
.about-explore__title .icon { flex: none; width: 18px; color: var(--red); transition: transform .3s, color .3s; }
.about-explore__card:hover .about-explore__media img { filter: saturate(1.08); }
.about-explore__card:hover .about-explore__title .icon { color: var(--green-dark); transform: translateX(5px); }

/* ---------- Exothermic welding process inner page ---------- */

.process-overview__grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); gap: clamp(48px, 7vw, 104px); align-items: center; }
.process-overview__copy .label { margin-bottom: 18px; color: var(--red); }
.process-overview__copy .section-title { margin-bottom: 26px; font-size: clamp(34px, 3.8vw, 50px); font-weight: 600; line-height: 1.1; }
.process-overview__copy .section-title em { color: var(--red); }
.process-overview__copy > p:not(.label) { max-width: 600px; font-size: 15px; line-height: 1.85; color: var(--muted); }
.process-overview__copy > p + p { margin-top: 18px; }
.process-overview__copy > p.process-overview__lead { padding-bottom: 20px; border-bottom: 1px solid var(--line); font-size: 17px; line-height: 1.7; color: var(--ink); }
.process-overview__copy > p.process-overview__bond { display: flex; gap: 18px; align-items: flex-start; margin-top: 28px; padding: 22px 24px; background: #fff; border: 1px solid var(--line); border-left: 3px solid var(--red); font-size: 14.5px; line-height: 1.7; color: var(--ink); }
.process-overview__bond-icon { display: grid; place-items: center; flex: none; width: 40px; height: 40px; border-radius: 50%; background: var(--red); color: #fff; }
.process-overview__bond-icon .icon { width: 18px; height: 18px; }
.process-overview__media { position: relative; margin: 0; padding: 14px; background: #fff; border: 1px solid var(--line); }
.process-overview__media::before {
    content: "";
    position: absolute;
    inset: -12px;
    background:
        linear-gradient(var(--red), var(--red)) left top / 26px 1px,
        linear-gradient(var(--red), var(--red)) left top / 1px 26px,
        linear-gradient(var(--red), var(--red)) right bottom / 26px 1px,
        linear-gradient(var(--red), var(--red)) right bottom / 1px 26px;
    background-repeat: no-repeat;
    pointer-events: none;
}
.process-overview__media img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.process-overview__media figcaption { display: flex; justify-content: space-between; align-items: center; padding: 16px 6px 2px; font-family: var(--font-head); font-size: 10.5px; font-weight: 600; letter-spacing: .18em; text-transform: uppercase; color: var(--muted); }

.process-reaction { background: #fff; }
.process-reaction__grid { display: grid; grid-template-columns: minmax(390px, .82fr) minmax(0, 1.18fr); gap: clamp(60px, 9vw, 134px); align-items: center; }
.reaction-formula { position: relative; display: grid; grid-template-columns: 1fr auto 1fr; gap: 18px; align-items: center; padding: clamp(30px, 5vw, 56px); border: 1px solid rgba(169, 206, 73, .35); border-top: 2px solid var(--red); background: #F8FBF0; }

.reaction-formula__node { display: grid; place-items: center; min-width: 0; aspect-ratio: 1; border-radius: 50%; background: #fff; text-align: center; }
.reaction-formula__node > span { font-family: var(--font-display); font-size: clamp(30px, 4vw, 46px); font-weight: 600; line-height: 1; }
.reaction-formula__node small { margin-top: 6px; font-family: var(--font-head); font-size: 8px; font-weight: 600; letter-spacing: .1em; text-transform: uppercase; }
.reaction-formula__node--copper { border: 1px solid rgba(234,50,56,.45); color: var(--red); }
.reaction-formula__node--aluminium { border: 1px solid rgba(33,32,30,.25); color: var(--ink); }
.reaction-formula__node--bond { grid-column: 1 / -1; width: 56%; justify-self: center; aspect-ratio: auto; padding: 18px; border-radius: 2px; background: var(--ink-900); color: #fff; }
.reaction-formula__node--bond > span { display: flex; }
.reaction-formula__node--bond .icon { width: 26px; height: 26px; }
.reaction-formula__operator { font-family: var(--font-head); font-size: 26px; font-weight: 300; color: var(--muted); }
.reaction-formula__operator .icon { width: 24px; height: 24px; color: var(--red); }
.reaction-formula__operator:has(.icon) { grid-column: 1 / -1; justify-self: center; display: flex; transform: rotate(90deg); }
.process-reaction__copy .label { margin-bottom: 18px; color: var(--red); }
.process-reaction__copy .section-title { margin-bottom: 30px; font-size: clamp(34px, 4.3vw, 55px); font-weight: 600; line-height: 1.08; }
.process-reaction__copy .section-title em { font-weight: 600; color: var(--red); }
.process-reaction__copy > p:not(.label) { max-width: 760px; font-size: 14.5px; line-height: 1.85; color: var(--muted); }
.process-reaction__copy > p + p { margin-top: 18px; }

.process-method { position: relative; isolation: isolate; overflow: hidden; background: var(--ink-900); color: rgba(255,255,255,.68); }
.process-method::before { content: ""; position: absolute; z-index: -1; inset: 0; background: radial-gradient(700px 520px at 100% 0, rgba(234,50,56,.13), transparent 70%), radial-gradient(520px 420px at 0 100%, rgba(169,206,73,.07), transparent 72%); }
.process-method__texture { position: absolute; z-index: -1; inset: 0; background: url('../images/grain.svg') repeat; opacity: .1; }
.process-method__head { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: 18px clamp(54px, 8vw, 120px); align-items: end; margin-bottom: clamp(56px, 8vw, 94px); }
.process-method__head .label { grid-column: 1 / -1; color: var(--green); }
.process-method__head .section-title { color: #fff; font-size: clamp(35px, 4.5vw, 57px); font-weight: 600; line-height: 1.08; }
.process-method__head .section-title em { display: block; font-weight: 600; color: var(--green); }
.process-method__head > p:last-child { max-width: 660px; margin: 0 0 6px; font-size: 15px; line-height: 1.8; color: rgba(255,255,255,.63); }
.method-flow { display: grid; grid-template-columns: repeat(5, 1fr); }
.method-flow li { position: relative; min-width: 0; padding: 0 clamp(16px, 2.2vw, 32px) 32px 0; }
.method-flow__number { display: inline-grid; place-items: center; width: 28px; height: 28px; margin-bottom: 22px; border: 1px solid rgba(234,50,56,.6); border-radius: 50%; font-family: var(--font-head); font-size: 10.5px; font-weight: 600; color: #fff; background: var(--ink-900); position: relative; z-index: 1; }
.method-flow__line { position: absolute; top: 13px; left: 34px; right: 10px; height: 1px; background: rgba(255,255,255,.16); }
.method-flow__line::before { content: ""; position: absolute; top: 0; left: 0; width: 34px; height: 1px; background: var(--red); }
.method-flow p { margin: 0; font-size: 13px; line-height: 1.7; color: rgba(255,255,255,.64); }
.process-method__result { display: grid; grid-template-columns: minmax(260px, .7fr) minmax(0, 1.3fr); gap: 34px clamp(54px, 8vw, 120px); align-items: start; margin-top: 54px; padding-top: 36px; border-top: 1px solid rgba(255,255,255,.12); }
.process-method__result p { margin: 0; font-size: 14px; line-height: 1.8; color: rgba(255,255,255,.63); }
.process-method__result .process-method__time { font-family: var(--font-head); font-size: 18px; line-height: 1.55; color: #fff; }

.process-features { background: #fff; }
.process-features__head { max-width: 760px; margin: 0 auto clamp(48px, 6vw, 72px); text-align: center; }
.process-features__head .label { margin-bottom: 18px; color: var(--red); }
.process-features__head .label::after { content: ""; width: 28px; height: 1px; background: var(--red); }
.process-features__head .section-title { font-size: clamp(34px, 4vw, 52px); font-weight: 600; }
.process-features__rule { display: block; width: 56px; height: 2px; margin: 26px auto 0; background: linear-gradient(90deg, var(--red) 50%, var(--green) 50%); }
.feature-matrix { display: flex; flex-wrap: wrap; justify-content: center; gap: 20px; }
.feature-matrix li {
    position: relative;
    flex: 0 1 calc((100% - 60px) / 4);
    display: flex;
    flex-direction: column;
    min-height: 230px;
    padding: 30px 28px 32px;
    background: #faf9f6;
    border: 1px solid var(--line);
    border-radius: 2px;
    transition: background-color .35s, border-color .35s;
}
.feature-matrix li::after {
    content: "";
    position: absolute;
    left: -1px;
    right: -1px;
    top: -1px;
    height: 2px;
    background: var(--red);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform .6s var(--ease);
}
.feature-matrix li:hover { background: #fff; border-color: #d9d4cd; }
.feature-matrix li:hover::after { transform: scaleX(1); }
.feature-matrix__icon {
    display: grid;
    place-items: center;
    width: 48px;
    height: 48px;
    margin-bottom: 28px;
    border: 1px solid rgba(234, 50, 56, .3);
    border-radius: 50%;
    background: #fff;
    color: var(--red);
    transition: background-color .35s, color .35s;
}
.feature-matrix__icon .icon { width: 20px; height: 20px; }
.feature-matrix li:hover .feature-matrix__icon { background: var(--red); color: #fff; }
.feature-matrix__number { position: absolute; top: 30px; right: 28px; font-family: var(--font-head); font-size: 11px; font-weight: 600; letter-spacing: .14em; color: #b5afa7; }
.feature-matrix p { margin: 0; font-size: 14.5px; line-height: 1.75; color: var(--ink); }
@media (max-width: 1100px) { .feature-matrix li { flex-basis: calc((100% - 40px) / 3); } }
@media (max-width: 960px) { .feature-matrix li { flex-basis: calc((100% - 20px) / 2); } }
@media (max-width: 640px) { .feature-matrix { gap: 14px; } .feature-matrix li { flex-basis: 100%; min-height: 0; padding: 26px 22px; } }


.process-guidance { background: #f7f6f2; }
.process-guidance__head { max-width: 850px; margin-bottom: clamp(52px, 7vw, 84px); }
.process-guidance__head .label { margin-bottom: 18px; color: var(--red); }
.process-guidance__head .section-title { font-size: clamp(36px, 4.8vw, 60px); font-weight: 600; line-height: 1.07; }
.process-guidance__head .section-title em { font-weight: 600; color: var(--red); }
.process-guidance__analysis { display: grid; grid-template-columns: minmax(260px, .7fr) minmax(0, 1.3fr); gap: 32px clamp(54px, 8vw, 120px); padding: clamp(34px, 5vw, 60px); background: #fff; border: 1px solid var(--line); border-top: 2px solid var(--red); }
.process-guidance__analysis h3 { max-width: 420px; font-size: clamp(22px, 2.5vw, 30px); font-weight: 600; line-height: 1.35; }
.process-guidance__analysis p { font-size: 14.5px; line-height: 1.85; color: var(--muted); }
.process-guidance__analysis p + p { margin-top: 18px; }
.maintenance-panel { display: grid; grid-template-columns: minmax(230px, .55fr) minmax(0, 1.45fr); gap: 36px clamp(54px, 8vw, 116px); margin-top: 20px; padding: clamp(34px, 5vw, 60px); background: #fff; border: 1px solid var(--line); }
.maintenance-panel__head .label { margin-bottom: 16px; color: var(--red); }
.maintenance-panel__head h3 { max-width: 350px; font-size: clamp(24px, 2.7vw, 34px); font-weight: 600; line-height: 1.28; }
.maintenance-panel ol { border-top: 1px solid rgba(33,32,30,.15); }
.maintenance-panel li { display: grid; grid-template-columns: 42px minmax(0,1fr); gap: 18px; padding-block: 17px; border-bottom: 1px solid rgba(33,32,30,.15); }
.maintenance-panel li > span { font-family: var(--font-head); font-size: 11px; font-weight: 600; letter-spacing: .1em; line-height: 2.1; color: var(--red); }
.maintenance-panel li p { margin: 0; font-size: 13.5px; line-height: 1.65; color: var(--ink); }
.safety-warning { display: grid; grid-template-columns: 150px minmax(0, 1fr); margin-top: 20px; background: var(--ink-900); border-left: 3px solid var(--red); color: #fff; }
.safety-warning__signal { display: grid; place-items: center; min-height: 100%; border-right: 1px solid rgba(255,255,255,.1); }
.safety-warning__signal span { display: grid; place-items: center; width: 60px; height: 60px; border-radius: 50%; background: var(--red); font-family: var(--font-display); font-size: 30px; font-weight: 600; }
.safety-warning__body { padding: clamp(34px, 5vw, 60px); }
.safety-warning__body .label { margin-bottom: 24px; color: var(--red); }
.safety-warning__body ul { display: grid; grid-template-columns: 1fr 1fr; gap: 18px 42px; }
.safety-warning__body li { position: relative; padding-left: 20px; font-size: 13.5px; line-height: 1.7; color: rgba(255,255,255,.72); }
.safety-warning__body li::before { content: ""; position: absolute; left: 0; top: .7em; width: 8px; height: 1px; background: var(--red); }

/* ---------- Joints page ---------- */
.joints-intro { background: #f7f6f2; }
.joints-intro__grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); gap: clamp(48px, 7vw, 104px); align-items: center; }
.joints-intro__copy .label { margin-bottom: 18px; color: var(--red); }
.joints-intro__copy .section-title { margin-bottom: 26px; font-size: clamp(32px, 3.6vw, 48px); line-height: 1.12; }
.joints-intro__copy .section-title em { color: var(--red); }
.joints-intro__copy > p:not(.label) { max-width: 600px; font-size: 15px; line-height: 1.85; color: var(--muted); }
.joints-intro__copy > p.joints-intro__lead { padding-bottom: 20px; margin-bottom: 20px; border-bottom: 1px solid var(--line); font-size: 17px; line-height: 1.7; color: var(--ink); }
.joints-intro__media { position: relative; margin: 0; padding: clamp(18px, 2.4vw, 30px) clamp(18px, 2.4vw, 30px) 14px; background: #fff; border: 1px solid var(--line); }
.joints-intro__media::before {
    content: "";
    position: absolute;
    inset: -12px;
    background:
        linear-gradient(var(--red), var(--red)) left top / 26px 1px,
        linear-gradient(var(--red), var(--red)) left top / 1px 26px,
        linear-gradient(var(--red), var(--red)) right bottom / 26px 1px,
        linear-gradient(var(--red), var(--red)) right bottom / 1px 26px;
    background-repeat: no-repeat;
    pointer-events: none;
}
.joints-intro__media img { width: 100%; }
.joints-intro__media figcaption { display: flex; justify-content: space-between; align-items: center; margin-top: 16px; padding-top: 14px; border-top: 1px solid var(--line); font-family: var(--font-head); font-size: 10.5px; font-weight: 600; letter-spacing: .18em; text-transform: uppercase; color: var(--muted); }

.joints-pairs { background: #fff; }
.joints-pairs__head { max-width: 780px; margin: 0 auto clamp(44px, 5vw, 64px); text-align: center; }
.joints-pairs__head .label { margin-bottom: 20px; color: var(--red); }
.joints-pairs__head .label::after { content: ""; width: 28px; height: 1px; background: var(--red); }
.joints-pairs__intro { margin: 0; font-family: var(--font-display); font-size: clamp(20px, 2.1vw, 27px); font-weight: 600; line-height: 1.45; color: var(--ink); }
.joints-pairs__list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.joints-pairs__list li {
    position: relative;
    display: flex;
    align-items: center;
    gap: 18px;
    padding: 30px 28px;
    background: #F8FBF0;
    border: 1px solid rgba(169, 206, 73, .35);
    border-radius: 2px;
    transition: background-color .35s, border-color .35s;
}
.joints-pairs__list li::after {
    content: "";
    position: absolute;
    left: -1px;
    right: -1px;
    top: -1px;
    height: 2px;
    background: var(--red);
    transform: scaleX(.2);
    transform-origin: left;
    transition: transform .6s var(--ease);
}
.joints-pairs__list li:hover { background: #fff; border-color: var(--line); }
.joints-pairs__list li:hover::after { transform: scaleX(1); }
.joints-pairs__num { align-self: flex-start; font-family: var(--font-head); font-size: 11px; font-weight: 600; letter-spacing: .14em; color: var(--red); }
.joints-pairs__metals { flex: 1; display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 10px; }
.joints-pairs__metal { font-family: var(--font-display); font-size: clamp(20px, 1.9vw, 25px); font-weight: 600; line-height: 1.2; color: var(--ink); }
.joints-pairs__to { font-family: var(--font-head); font-size: 11px; font-weight: 500; letter-spacing: .16em; text-transform: uppercase; color: var(--muted); }
.joints-pairs__icon { display: grid; place-items: center; flex: none; width: 44px; height: 44px; border: 1px solid rgba(234, 50, 56, .3); border-radius: 50%; background: #fff; color: var(--red); transition: background-color .35s, color .35s; }
.joints-pairs__icon .icon { width: 18px; height: 18px; }
.joints-pairs__list li:hover .joints-pairs__icon { background: var(--red); color: #fff; }
@media (max-width: 960px) {
    .joints-intro__grid { grid-template-columns: 1fr; }
    .joints-intro__media { width: min(100%, 680px); }
    .joints-pairs__list { grid-template-columns: 1fr; max-width: 560px; margin-inline: auto; }
}

/* Exothermic Weld showcase (dark) */
.weld-showcase { position: relative; isolation: isolate; overflow: hidden; background: var(--ink-950); color: rgba(255, 255, 255, .62); }
.weld-showcase__overlay {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(40% 50% at 82% 30%, rgba(234, 50, 56, .16), transparent 72%),
        radial-gradient(30% 40% at 0% 100%, rgba(169, 206, 73, .06), transparent 70%),
        linear-gradient(90deg, rgba(19, 18, 18, .96) 0%, rgba(19, 18, 18, .82) 50%, rgba(19, 18, 18, .7) 100%);
}
.weld-showcase__top { display: grid; grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr); gap: clamp(48px, 6vw, 96px); align-items: start; }
.weld-showcase__copy .label { margin-bottom: 18px; }
.weld-showcase__copy .section-title { margin-bottom: 26px; color: #fff; font-size: clamp(36px, 4.2vw, 56px); line-height: 1.08; }
.weld-showcase__copy .section-title em { color: var(--red); }
.weld-showcase__lead { max-width: 560px; padding-bottom: 28px; margin-bottom: 28px; border-bottom: 1px solid var(--line-dark); font-size: 16px; line-height: 1.85; color: rgba(255, 255, 255, .78); }
.weld-credentials { display: grid; gap: 14px; }
.weld-credentials__card { padding: 22px 24px; background: rgba(255, 255, 255, .035); border: 1px solid var(--line-dark); border-left: 2px solid var(--red); }
.weld-credentials__card p { margin: 0; font-size: 14px; line-height: 1.75; }
.weld-credentials__card .weld-credentials__badge { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 12px; }
.weld-credentials__badge span { padding: 5px 10px; border: 1px solid rgba(169, 206, 73, .4); border-radius: 2px; font-family: var(--font-head); font-size: 10px; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; color: var(--green); }

.joint-mosaic { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; }
.joint-mosaic__tile {
    position: relative;
    display: grid;
    grid-template-rows: minmax(0, 1fr);
    place-items: center;
    min-width: 0;
    aspect-ratio: 1;
    margin: 0;
    padding: 14px 12px 56px;
    background: #fff;
    border-radius: 2px;
}
.joint-mosaic__tile:first-child { grid-column: span 2; grid-row: span 2; aspect-ratio: auto; padding: 28px 24px 46px; }
.joint-mosaic__tile::after { content: ""; position: absolute; left: 0; right: 0; top: 0; height: 2px; background: var(--red); transform: scaleX(0); transform-origin: left; transition: transform .6s var(--ease); }
.joint-mosaic__tile:hover::after { transform: scaleX(1); }
.joint-mosaic__tile img { width: auto; max-width: 100%; max-height: 100%; object-fit: contain; }
.joint-mosaic__tile figcaption { position: absolute; left: 12px; right: 12px; bottom: 10px; display: -webkit-box; -webkit-box-orient: vertical; -webkit-line-clamp: 3; overflow: hidden; font-family: var(--font-head); font-size: 8.5px; font-weight: 600; line-height: 1.45; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); transition: color .3s; }
.joint-mosaic__tile:first-child figcaption { left: 24px; bottom: 18px; font-size: 10.5px; }
.joint-mosaic__tile:hover figcaption { color: var(--red); }
.joint-mosaic__stat { display: flex; flex-direction: column; justify-content: center; aspect-ratio: 1; padding: 16px; background: var(--red); border-radius: 2px; color: #fff; }
.joint-mosaic__stat strong { font-family: var(--font-display); font-size: clamp(36px, 3.4vw, 48px); font-weight: 600; line-height: 1; }
.joint-mosaic__stat strong span { margin-left: 2px; font-size: .6em; vertical-align: top; }
.joint-mosaic__stat > span { margin-top: 8px; font-family: var(--font-head); font-size: 9px; font-weight: 600; line-height: 1.45; letter-spacing: .14em; text-transform: uppercase; color: rgba(255, 255, 255, .85); }

.weld-qualities { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(28px, 4vw, 56px); margin-top: clamp(64px, 8vw, 104px); padding-top: 40px; border-top: 1px solid var(--line-dark); }
.weld-qualities li { position: relative; }
.weld-qualities li::before { content: ""; position: absolute; top: -41px; left: 0; width: 48px; height: 1px; background: var(--red); }
.weld-qualities__num { display: block; margin-bottom: 16px; font-family: var(--font-head); font-size: 11px; font-weight: 600; letter-spacing: .14em; color: var(--red); }
.weld-qualities p { margin: 0; font-size: 14.5px; line-height: 1.85; color: rgba(255, 255, 255, .7); }
.weld-note { display: flex; align-items: flex-start; gap: 18px; margin: clamp(48px, 6vw, 72px) 0 0; padding: 22px 26px; border: 1px solid var(--line-dark); background: rgba(255, 255, 255, .025); font-size: 13.5px; line-height: 1.8; color: rgba(255, 255, 255, .55); }
.weld-note__mark { flex: none; width: 22px; height: 1px; margin-top: 12px; background: var(--green); }
@media (max-width: 1100px) {
    .weld-showcase__top { grid-template-columns: 1fr; }
    .joint-mosaic { max-width: 720px; }
}
@media (max-width: 640px) {
    .joint-mosaic { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .joint-mosaic__tile:first-child { grid-row: auto; aspect-ratio: 4 / 3; }
    .weld-qualities { grid-template-columns: 1fr; gap: 32px; padding-top: 0; border-top: 0; }
    .weld-qualities li { padding-top: 24px; border-top: 1px solid var(--line-dark); }
    .weld-qualities li::before { top: -1px; }
    .weld-note { padding: 20px; }
}

/* ---------- Catalog page ---------- */
.cat-steps { background: #f7f6f2; }
.cat-steps__head { max-width: 820px; margin: 0 auto clamp(52px, 6vw, 80px); text-align: center; }
.cat-steps__head .label { margin-bottom: 18px; color: var(--red); }
.cat-steps__head .label::after { content: ""; width: 28px; height: 1px; background: var(--red); }
.cat-steps__head .section-title { font-size: clamp(32px, 3.8vw, 50px); line-height: 1.12; }
.cat-steps__head .section-title em { color: var(--red); }
.cat-steps__sub { margin: 18px 0 0; font-size: 16px; color: var(--muted); }
.cat-steps__layout { display: grid; grid-template-columns: 280px minmax(0, 1fr); gap: clamp(32px, 5vw, 72px); align-items: start; }

.cat-index { position: sticky; top: calc(var(--header-h) + 28px); padding: 30px 26px; background: var(--ink-900); border-top: 2px solid var(--red); color: rgba(255, 255, 255, .6); }
.cat-index__count { display: flex; align-items: baseline; gap: 10px; margin: 0 0 22px; padding-bottom: 20px; border-bottom: 1px solid var(--line-dark); }
.cat-index__count strong { font-family: var(--font-display); font-size: 52px; font-weight: 600; line-height: 1; color: #fff; }
.cat-index__count span { font-family: var(--font-head); font-size: 11px; font-weight: 600; letter-spacing: .2em; text-transform: uppercase; }
.cat-index__list { display: grid; grid-template-columns: repeat(5, 1fr); gap: 6px; margin-bottom: 26px; }
.cat-index__list a { display: grid; place-items: center; aspect-ratio: 1; border: 1px solid var(--line-dark); border-radius: 2px; font-family: var(--font-head); font-size: 11px; font-weight: 600; color: rgba(255, 255, 255, .55); transition: background-color .3s, border-color .3s, color .3s; }
.cat-index__list a:hover { border-color: rgba(255, 255, 255, .35); color: #fff; }
.cat-index__list a.is-current { background: var(--red); border-color: var(--red); color: #fff; }
.cat-index__btn { width: 100%; justify-content: space-between; padding-inline: 20px; font-size: 11px; }

.cat-timeline { position: relative; display: grid; gap: 16px; }
.cat-timeline::before { content: ""; position: absolute; top: 24px; bottom: 24px; left: 23px; width: 1px; background: linear-gradient(var(--red), rgba(234, 50, 56, .15)); }
.cat-step { position: relative; display: grid; grid-template-columns: 48px minmax(0, 1fr); gap: 22px; align-items: start; scroll-margin-top: calc(var(--header-h) + 24px); }
.cat-step__num { position: relative; z-index: 1; display: grid; place-items: center; width: 48px; height: 48px; margin-top: 14px; border: 1px solid rgba(234, 50, 56, .45); border-radius: 50%; background: #fff; font-family: var(--font-head); font-size: 12px; font-weight: 600; color: var(--red); transition: background-color .35s, color .35s; }
.cat-step:hover .cat-step__num { background: var(--red); color: #fff; }
.cat-step__card { position: relative; display: grid; gap: 22px clamp(22px, 3vw, 36px); padding: clamp(22px, 2.6vw, 30px) clamp(22px, 2.8vw, 34px); background: #fff; border: 1px solid var(--line); border-radius: 2px; }
.cat-step__card::after { content: ""; position: absolute; left: -1px; right: -1px; top: -1px; height: 2px; background: var(--red); transform: scaleX(0); transform-origin: left; transition: transform .6s var(--ease); }
.cat-step:hover .cat-step__card::after { transform: scaleX(1); }
.cat-step--photo .cat-step__card { grid-template-columns: minmax(0, 1fr) minmax(200px, 260px); align-items: center; }
.cat-step__label { margin: 0 0 8px; font-family: var(--font-head); font-size: 11px; font-weight: 600; letter-spacing: .18em; color: var(--red); }
.cat-step__text { margin: 0; font-size: 15px; line-height: 1.8; color: var(--ink); }
.cat-step__note { margin: 18px 0 0; padding: 16px 18px; background: #F8FBF0; border: 1px solid rgba(169, 206, 73, .4); border-left: 3px solid var(--green); font-size: 13.5px; line-height: 1.75; color: var(--ink); }
.cat-step__note strong { font-weight: 700; color: var(--ink); }
.cat-step__photo { position: relative; margin: 0; overflow: hidden; border-radius: 2px; background: var(--stone); }
.cat-step__photo img { width: 100%; aspect-ratio: 3 / 2; object-fit: cover; }

.cat-gallery { position: relative; isolation: isolate; overflow: hidden; background: var(--ink-950); }
.cat-gallery__head { max-width: 760px; margin: 0 auto clamp(40px, 5vw, 60px); text-align: center; }
.cat-gallery__head .label { margin-bottom: 18px; }
.cat-gallery__head .label::after { content: ""; width: 28px; height: 1px; background: var(--red); }
.cat-gallery__head .section-title { color: #fff; font-size: clamp(30px, 3.5vw, 46px); line-height: 1.15; }
.cat-gallery__head .section-title em { color: var(--red); }
.cat-gallery__plate { position: relative; max-width: 1080px; margin: 0 auto; padding: clamp(10px, 1.4vw, 18px); background: #fff; border-radius: 2px; box-shadow: 0 60px 110px -50px rgba(0, 0, 0, .95); }
.cat-gallery__plate::before {
    content: "";
    position: absolute;
    inset: -16px;
    background:
        linear-gradient(var(--red), var(--red)) left top / 26px 1px,
        linear-gradient(var(--red), var(--red)) left top / 1px 26px,
        linear-gradient(var(--red), var(--red)) right top / 26px 1px,
        linear-gradient(var(--red), var(--red)) right top / 1px 26px,
        linear-gradient(var(--red), var(--red)) left bottom / 26px 1px,
        linear-gradient(var(--red), var(--red)) left bottom / 1px 26px,
        linear-gradient(var(--red), var(--red)) right bottom / 26px 1px,
        linear-gradient(var(--red), var(--red)) right bottom / 1px 26px;
    background-repeat: no-repeat;
    pointer-events: none;
}
.cat-gallery__plate img { width: 100%; }
.cat-gallery__plate + .cat-gallery__plate { margin-top: clamp(36px, 4vw, 56px); }

.cat-download { background: #fff; }
.cat-download__grid { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: clamp(48px, 7vw, 110px); align-items: center; }
.cat-download__cover { display: grid; place-items: center; padding: clamp(32px, 5vw, 64px); background: #F8FBF0; border: 1px solid rgba(169, 206, 73, .35); }
.cat-cover { position: relative; display: flex; flex-direction: column; justify-content: flex-end; width: min(100%, 300px); aspect-ratio: 3 / 4; padding: 34px 30px; background: linear-gradient(160deg, #2a2827 0%, var(--ink-950) 70%); border-left: 6px solid var(--red); border-radius: 2px 4px 4px 2px; box-shadow: 0 40px 70px -30px rgba(19, 18, 18, .55), 12px 12px 0 -2px #fff, 12px 12px 0 -1px var(--line); transform: rotate(-3deg); }
.cat-cover__logo { position: absolute; top: 30px; left: 30px; width: 130px; }
.cat-cover__rule { width: 40px; height: 2px; margin-bottom: 16px; background: var(--green); }
.cat-cover__title { margin: 0; font-family: var(--font-display); font-size: 26px; font-weight: 600; line-height: 1.15; color: #fff; }
.cat-cover__pdf { position: absolute; top: 30px; right: 26px; padding: 4px 8px; background: var(--red); font-family: var(--font-head); font-size: 9px; font-weight: 600; letter-spacing: .14em; color: #fff; }
.cat-download__copy .label { margin-bottom: 18px; color: var(--red); }
.cat-download__copy .section-title { font-size: clamp(32px, 3.8vw, 52px); line-height: 1.12; }
.cat-download__copy .section-title em { color: var(--red); }
.cat-download__actions { display: flex; flex-wrap: wrap; align-items: center; gap: 18px 34px; margin-top: 34px; }
.cat-download__meta { display: flex; align-items: center; gap: 10px; margin: 26px 0 0; padding-top: 20px; border-top: 1px solid var(--line); font-family: var(--font-head); font-size: 11px; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); }
.cat-download__meta .icon { width: 15px; height: 15px; color: var(--red); }

@media (max-width: 1100px) {
    .cat-steps__layout { grid-template-columns: 1fr; }
    .cat-index { position: static; display: grid; grid-template-columns: auto minmax(0, 1fr) auto; align-items: center; gap: 24px; }
    .cat-index__count { margin: 0; padding: 0 24px 0 0; border-bottom: 0; border-right: 1px solid var(--line-dark); }
    .cat-index__list { grid-template-columns: repeat(13, minmax(0, 1fr)); margin: 0; }
    .cat-index__btn { width: auto; }
}
@media (max-width: 960px) {
    .cat-download__grid { grid-template-columns: 1fr; }
    .cat-download__cover { max-width: 560px; }
}
@media (max-width: 760px) {
    .cat-index { grid-template-columns: 1fr; gap: 18px; }
    .cat-index__count { padding: 0 0 16px; border-right: 0; border-bottom: 1px solid var(--line-dark); }
    .cat-index__list { grid-template-columns: repeat(7, minmax(0, 1fr)); }
    .cat-index__btn { width: 100%; }
    .cat-step--photo .cat-step__card { grid-template-columns: 1fr; }
    .cat-step__photo { order: -1; }
}
@media (max-width: 640px) {
    .cat-timeline::before { left: 17px; }
    .cat-step { grid-template-columns: 36px minmax(0, 1fr); gap: 12px; }
    .cat-step__num { width: 36px; height: 36px; margin-top: 18px; font-size: 10.5px; }
    .cat-step__card { padding: 20px 18px; }
    .cat-step__text { font-size: 14.5px; }
    .cat-cover { width: min(100%, 240px); padding: 26px 22px; }
    .cat-cover__logo { top: 24px; left: 22px; width: 110px; }
    .cat-cover__title { font-size: 21px; }
}

/* ---------- Common Joints page ---------- */
.cj-intro { background: #fff; }
.cj-intro__grid { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr); gap: clamp(40px, 6vw, 96px); align-items: center; }
.cj-intro__copy .label { margin-bottom: 18px; color: var(--red); }
.cj-intro__copy .section-title { margin-bottom: 24px; font-size: clamp(32px, 3.8vw, 50px); line-height: 1.12; }
.cj-intro__copy .section-title em { color: var(--red); }
.cj-intro__lead { max-width: 600px; margin: 0; font-size: 17px; line-height: 1.75; color: var(--ink); }
.cj-brands { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.cj-brands li { display: grid; place-items: center; min-height: 84px; padding: 12px 6px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); font-family: var(--font-head); font-size: clamp(10px, .9vw, 12px); font-weight: 600; letter-spacing: .16em; color: #9a948c; text-align: center; transition: color .3s, background-color .3s; }
.cj-brands li:hover { color: var(--ink); background: #faf9f6; }
.cj-brands li.is-ours { background: var(--red); color: #fff; }
.cj-intro__cols { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(28px, 5vw, 72px); margin-top: clamp(52px, 6vw, 80px); padding-top: 36px; border-top: 1px solid var(--line); }
.cj-intro__cols p { position: relative; margin: 0; padding-left: 52px; font-size: 15px; line-height: 1.85; color: var(--muted); }
.cj-intro__num { position: absolute; left: 0; top: 2px; font-family: var(--font-head); font-size: 11px; font-weight: 600; letter-spacing: .14em; color: var(--red); }

.cj-moulds { position: relative; isolation: isolate; overflow: hidden; background: var(--ink-950); color: rgba(255, 255, 255, .62); }
.cj-moulds .hero__blueprint { opacity: .07; }
.cj-moulds__grid { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, .75fr); gap: clamp(40px, 6vw, 96px); align-items: center; }
.cj-moulds__copy .label { margin-bottom: 22px; }
.cj-moulds__copy .cj-moulds__lead { margin-bottom: 22px; font-family: var(--font-display); font-size: clamp(20px, 2vw, 26px); font-weight: 600; line-height: 1.5; color: #fff; }
.cj-moulds__copy p { max-width: 720px; margin: 0; font-size: 15px; line-height: 1.85; }
.cj-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.cj-stats__item { display: flex; flex-direction: column; justify-content: flex-end; aspect-ratio: 1; padding: 22px; border: 1px solid var(--line-dark); border-radius: 2px; background: rgba(255, 255, 255, .03); }
.cj-stats__item strong { font-family: var(--font-display); font-size: clamp(44px, 4.6vw, 64px); font-weight: 600; line-height: 1; color: #fff; }
.cj-stats__item sup { font-size: .5em; }
.cj-stats__item span { margin-top: 12px; font-family: var(--font-head); font-size: 10px; font-weight: 600; line-height: 1.5; letter-spacing: .14em; text-transform: uppercase; color: rgba(255, 255, 255, .6); }
.cj-stats__item--red { background: var(--red); border-color: var(--red); }
.cj-stats__item--red span { color: rgba(255, 255, 255, .88); }
.cj-quality { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: clamp(56px, 7vw, 88px); }
.cj-quality > p,
.cj-quality__flow { margin: 0; padding: clamp(24px, 3vw, 36px); background: rgba(255, 255, 255, .035); border: 1px solid var(--line-dark); border-top: 2px solid var(--red); }
.cj-quality__text { margin: 0; font-size: 14.5px; line-height: 1.85; color: rgba(255, 255, 255, .7); }
.cj-flow { display: grid; grid-template-columns: repeat(3, 1fr); margin-top: 24px; padding-top: 20px; border-top: 1px solid var(--line-dark); }
.cj-flow li { position: relative; display: flex; align-items: center; gap: 10px; font-family: var(--font-head); font-size: 11px; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; color: #fff; }
.cj-flow li span { display: grid; place-items: center; width: 28px; height: 28px; border: 1px solid rgba(169, 206, 73, .5); border-radius: 50%; font-size: 9.5px; letter-spacing: 0; color: var(--green); }
.cj-flow li + li::before { content: ""; position: absolute; right: calc(100% + 4px); width: 18%; height: 1px; background: rgba(255, 255, 255, .2); }

.cj-types { background: #f7f6f2; }
.cj-types__head { max-width: 760px; margin: 0 auto 36px; text-align: center; }
.cj-types__head .label { margin-bottom: 18px; color: var(--red); }
.cj-types__head .label::after { content: ""; width: 28px; height: 1px; background: var(--red); }
.cj-types__head .section-title { font-size: clamp(32px, 3.8vw, 50px); line-height: 1.12; }
.cj-types__head .section-title em { color: var(--red); }
.cj-jump { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin-bottom: clamp(48px, 6vw, 72px); }
.cj-jump__tab { display: inline-flex; align-items: center; gap: 10px; padding: 10px 16px; background: #fff; border: 1px solid var(--line); border-radius: 100px; font-family: var(--font-head); font-size: 12px; font-weight: 500; line-height: 1.4; color: var(--ink); cursor: pointer; transition: border-color .3s, color .3s, background-color .3s; }
.cj-jump__tab span { font-size: 10px; font-weight: 600; letter-spacing: .1em; color: var(--red); transition: color .3s; }
.cj-jump__tab:hover { border-color: var(--red); color: var(--red); }
.cj-jump__tab.is-active { background: var(--ink-900); border-color: var(--ink-900); color: #fff; }
.cj-jump__tab.is-active span { color: var(--green); }
.cj-jump__tab:focus-visible { outline: 2px solid var(--red); outline-offset: 2px; }

.cj-family { scroll-margin-top: calc(var(--header-h) + 24px); }
.cj-family + .cj-family { margin-top: clamp(44px, 5vw, 64px); }
.js .cj-family:not(.is-active) { display: none; }
.js .cj-family + .cj-family { margin-top: 0; }
.cj-family.is-switching { animation: cj-tab-in .45s ease both; }
@keyframes cj-tab-in { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) { .cj-family.is-switching { animation: none; } }
.cj-family__head { display: flex; align-items: center; gap: 18px; margin-bottom: 22px; padding-bottom: 18px; border-bottom: 1px solid var(--line); }
.cj-family__num { display: grid; place-items: center; flex: none; width: 44px; height: 44px; border-radius: 50%; background: var(--ink-900); font-family: var(--font-head); font-size: 11.5px; font-weight: 600; color: #fff; }
.cj-family__title { flex: 1; font-size: clamp(19px, 1.9vw, 25px); line-height: 1.3; }
.cj-family__count { flex: none; padding: 6px 12px; border: 1px solid rgba(169, 206, 73, .45); border-radius: 100px; background: #F8FBF0; font-family: var(--font-head); font-size: 10px; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; color: #6f8f22; }
.cj-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.cj-card { position: relative; display: flex; flex-direction: column; background: #fff; border: 1px solid var(--line); border-radius: 2px; transition: border-color .35s; }
.cj-card::after { content: ""; position: absolute; left: -1px; right: -1px; top: -1px; height: 2px; background: var(--red); transform: scaleX(0); transform-origin: left; transition: transform .6s var(--ease); }
.cj-card:hover { border-color: #d9d4cd; }
.cj-card:hover::after { transform: scaleX(1); }
.cj-card__media { display: flex; align-items: center; justify-content: center; height: 190px; margin: 0; padding: 22px; overflow: hidden; }
.cj-card__media img { width: auto; max-width: 100%; height: auto; max-height: 146px; object-fit: contain; }
.cj-card__name { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin: auto 0 0; padding: 16px 20px; border-top: 1px solid var(--line); font-family: var(--font-head); font-size: 13px; font-weight: 500; line-height: 1.45; color: var(--ink); transition: color .3s; }
.cj-card__name::after { content: ""; flex: none; width: 7px; height: 7px; border-radius: 50%; background: var(--line); transition: background-color .3s; }
.cj-card:hover .cj-card__name { color: var(--red); }
.cj-card:hover .cj-card__name::after { background: var(--red); }

@media (max-width: 1100px) {
    .cj-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (max-width: 960px) {
    .cj-intro__grid,
    .cj-moulds__grid,
    .cj-quality { grid-template-columns: 1fr; }
    .cj-stats { max-width: 480px; }
}
@media (max-width: 640px) {
    .cj-brands { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .cj-brands li { min-height: 60px; }
    .cj-intro__cols { grid-template-columns: 1fr; gap: 24px; }
    .cj-intro__cols p { padding-left: 40px; }
    .cj-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
    .cj-card__media { height: 130px; padding: 14px; }
    .cj-card__media img { max-height: 102px; }
    .cj-card__name { padding: 12px 14px; font-size: 12px; }
    .cj-family__head { flex-wrap: wrap; gap: 12px; }
    .cj-family__num { width: 38px; height: 38px; }
    .cj-family__title { flex-basis: calc(100% - 60px); }
    .cj-family__count { margin-left: 50px; }
    .cj-flow li { font-size: 10px; letter-spacing: .08em; }
    .cj-flow li + li::before { display: none; }
}

/* ---------- CTA ---------- */
.cta { padding: clamp(72px, 9vw, 120px) 0; }
.cta__panel {
    position: relative;
    overflow: hidden;
    display: grid;
    grid-template-columns: minmax(0, 1.5fr) auto;
    align-items: center;
    gap: 40px 64px;
    padding: clamp(36px, 6vw, 80px);
    background: linear-gradient(115deg, var(--ink-900) 0%, #242220 70%, #2f2624 100%);
    border-radius: 3px;
    color: rgba(255, 255, 255, .66);
}
.cta__panel::before {
    content: "";
    position: absolute;
    width: 260px;
    height: 260px;
    right: -100px;
    top: -140px;
    border: 1px solid rgba(234,50,56,.32);
    border-radius: 50%;
}
.cta__eyebrow {
    margin-bottom: 18px !important;
    font-family: var(--font-head);
    font-size: 10px;
    font-weight: 600;
    letter-spacing: .2em;
    text-transform: uppercase;
    color: var(--green) !important;
}
.cta__title {
    margin-bottom: 18px;
    color: #fff;
    max-width: 720px;
    font-size: clamp(28px, 3.2vw, 43px);
    font-weight: 600;
    letter-spacing: -.025em;
}
.cta__copy > p:last-child { max-width: 680px; }
.cta__title em { font-weight: 600; color: var(--red); }
.cta a:not(.btn) { color: #fff; border-bottom: 1px solid rgba(255, 255, 255, .3); transition: border-color .3s; }
.cta a:not(.btn):hover { border-color: var(--red); }
.cta__action { position: relative; z-index: 1; display: grid; justify-items: start; gap: 18px; min-width: 220px; }

/* ---------- Footer ---------- */
.site-footer {
    position: relative;
    overflow: hidden;
    background:
        radial-gradient(520px 280px at 8% 0%, rgba(169, 206, 73, .065), transparent 72%),
        radial-gradient(500px 300px at 100% 0%, rgba(234, 50, 56, .065), transparent 72%),
        var(--ink-950);
    border-top: 1px solid rgba(169, 206, 73, .2);
    color: rgba(255, 255, 255, .62);
    font-size: 14.5px;
}
.site-footer__grid {
    position: relative;
    display: grid;
    grid-template-columns: minmax(280px, 1.45fr) .75fr 1.15fr 1.2fr;
    gap: clamp(34px, 4vw, 64px);
    padding-block: clamp(64px, 8vw, 96px);
}
.site-footer__logo { width: 158px; margin-bottom: 26px; }
.site-footer__eyebrow {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 14px !important;
    font-family: var(--font-head);
    font-size: 9.5px;
    font-weight: 600;
    letter-spacing: .17em;
    text-transform: uppercase;
    color: var(--green);
}
.site-footer__eyebrow span { width: 24px; height: 1px; background: var(--red); }
.site-footer__statement {
    max-width: 360px;
    margin-bottom: 18px !important;
    font-family: var(--font-head);
    font-size: 21px;
    font-weight: 300;
    line-height: 1.5;
    color: #fff;
}
.site-footer__about-copy { max-width: 365px; font-size: 13.5px; color: rgba(255,255,255,.55); }
.site-footer__col {
    min-width: 0;
    padding-left: clamp(8px, 1vw, 16px);
}
.site-footer__title {
    display: flex;
    align-items: center;
    gap: 11px;
    margin-bottom: 30px;
    font-size: 15px;
    font-weight: 600;
    letter-spacing: .035em;
    color: var(--green);
}
.site-footer__title-mark {
    position: relative;
    width: 9px;
    height: 9px;
    border: 1px solid var(--red);
    transform: rotate(45deg);
}
.site-footer__title-mark::after {
    content: "";
    position: absolute;
    inset: 2px;
    background: var(--red);
}
.site-footer__links { display: grid; gap: 15px; }
.site-footer__links a {
    position: relative;
    display: flex;
    align-items: center;
    gap: 11px;
    width: fit-content;
    color: rgba(255,255,255,.72);
    transition: color .25s, transform .3s var(--ease);
}
.site-footer__links .icon { width: 15px; height: 15px; color: var(--green); transition: color .25s, transform .3s var(--ease); }
.site-footer__links a:hover { color: #fff; transform: translateX(5px); }
.site-footer__links a:hover .icon { color: var(--red); transform: translateX(3px); }
.site-footer__row {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    margin-bottom: 19px;
    line-height: 1.72;
    color: rgba(255,255,255,.78);
}
.site-footer__contact-icon {
    display: grid;
    place-items: center;
    flex: 0 0 38px;
    width: 38px;
    height: 38px;
    margin-top: 1px;
    border-radius: 50%;
    background: rgba(255,255,255,.035);
}
.site-footer__contact-icon .icon { width: 17px; height: 17px; }
.site-footer__contact-icon--green { border: 1px solid rgba(169,206,73,.28); color: var(--green); }
.site-footer__contact-icon--red { border: 1px solid rgba(234,50,56,.3); color: var(--red); }
.site-footer__contact a { color: rgba(255,255,255,.9); transition: color .25s; }
.site-footer__contact a:hover { color: var(--green); }
.site-footer__bottom {
    position: relative;
    border-top: 1px solid var(--line-dark);
    padding-block: 24px;
    font-size: 13px;
    letter-spacing: .02em;
}
.site-footer__bottom-inner { display: flex; justify-content: space-between; gap: 24px; }
.site-footer__credit { color: #fff; border-bottom: 1px solid rgba(169,206,73,.5); transition: color .25s, border-color .25s; }
.site-footer__credit:hover { color: var(--green); border-color: var(--green); }
.site-footer__bottom-status { display: flex; align-items: center; gap: 9px; }
.site-footer__bottom-status span { width: 6px; height: 6px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 4px rgba(169,206,73,.08); }

/* ---------- WhatsApp float ---------- */
.wa-float {
    position: fixed;
    right: 22px;
    bottom: 22px;
    z-index: 40;
    display: grid;
    place-items: center;
    width: 54px;
    height: 54px;
    border-radius: 50%;
    background: #25D366;
    color: #fff;
    box-shadow: 0 12px 28px -12px rgba(19, 18, 18, .5);
}
.wa-float .icon { width: 26px; height: 26px; }

/* ---------- 404 ---------- */
.hero--short { min-height: 0; padding-block: clamp(96px, 14vw, 180px); }

/* ---------- Responsive ---------- */
@media (max-width: 1100px) {
    .hero__inner { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 48px; }
    .kit-explorer { grid-template-columns: 280px minmax(0, 1fr); }
    .kit-panel,
    .kit-panel.is-active { grid-template-columns: minmax(240px, .7fr) minmax(340px, 1.3fr); }
    .kit-panel__body { padding-inline: 42px; }
}

@media (max-width: 960px) {
    .about-values { grid-template-columns: 1fr 1fr; }
    .hero { min-height: 0; }
    .hero__inner { grid-template-columns: 1fr; gap: 64px; }
    .hero__copy { max-width: 640px; }
    .hero__visual { width: min(100%, 680px); }
    .kit-process__intro { grid-template-columns: 1fr; gap: 28px; }
    .process-path__step { grid-template-columns: auto 1fr; }
    .process-path__mark { display: none; }
    .kit-explorer { grid-template-columns: 1fr; min-height: 0; }
    .kit-explorer__rail { padding: 16px; }
    .kit-explorer__rail-head { padding-bottom: 12px; }
    .kit-explorer__items { display: flex; gap: 4px; max-height: none; overflow-x: auto; padding-bottom: 4px; }
    .kit-select { flex: 0 0 220px; border: 1px solid rgba(255,255,255,.08); }
    .kit-select:first-child { border-top: 1px solid rgba(255,255,255,.08); }
    .kit-panel { min-height: 0; }
    .kit-panel,
    .kit-panel.is-active { grid-template-columns: minmax(280px, .75fr) minmax(0, 1.25fr); }
    .kit-panel__body { padding: 42px; }
    .process-principle { grid-template-columns: 48px minmax(0, 1fr); }
    .process-principle__line { width: 48px; }
    .process-principle .link-line { grid-column: 2; justify-self: start; }
    .about-story__grid { grid-template-columns: 1fr; }
    .about-story__copy { max-width: 760px; }
    .about-film { width: min(100%, 760px); }
    .about-maker__lead { grid-template-columns: 1fr; }
    .about-maker__lead .label { grid-column: auto; }
    .about-maker__lead .section-title { max-width: 700px; }
    .about-maker__lead > p + p { grid-column: auto; margin-top: 0; }
    .about-maker__content { grid-template-columns: 1fr; }
    .about-maker__assurance { max-width: 720px; }
    .about-explore__grid { grid-template-columns: 1fr 1fr; }
    .about-explore__card:first-child { grid-column: 1 / -1; }
    .about-explore__card:first-child .about-explore__media { aspect-ratio: 16 / 8; }
    .process-overview__grid,
    .process-reaction__grid,
    .process-method__head,
    .process-method__result { grid-template-columns: 1fr; }
    .process-method__head .label { grid-column: auto; }
    .process-method__head > p:last-child { max-width: 760px; }
    .process-overview__media { width: min(100%, 720px); }
    .reaction-formula { width: min(100%, 640px); }
    .process-reaction__copy { max-width: 820px; }
    .method-flow { grid-template-columns: 1fr 1fr; gap: 38px 28px; }
    .process-guidance__analysis,
    .maintenance-panel { grid-template-columns: 1fr; }
    .maintenance-panel__head { max-width: 600px; }
    .cta__panel { grid-template-columns: 1fr; }
    .cta__action { justify-self: start; }
    .site-footer__grid { grid-template-columns: 1fr 1fr; }
    .site-footer__about { grid-column: 1 / -1; }
}

@media (max-width: 640px) {
    .hero { padding-top: 52px; }
    .hero__kicker { margin-bottom: 22px; }
    .hero__title { font-size: clamp(36px, 10.5vw, 46px); }
    .hero__lead { margin-top: 24px; font-size: 15px; line-height: 1.8; }
    .hero__actions { align-items: flex-start; flex-direction: column; margin-top: 32px; }
    .hero__inner { gap: 48px; }
    .hero__visual { padding: 12px; }
    .plate__media { padding: 20px 16px; }
    .hero__strip { grid-template-columns: 1fr; margin-top: 48px; }
    .inner-hero .hero__strip { grid-auto-flow: row; }
    .hero__strip li + li { border-left: 0; border-top: 1px solid var(--line-dark); }
    .hero__strip a,
    .hero__strip li:first-child a { padding: 20px 0; }
    .cta__panel { padding: 34px 26px; }
    .cta__action { width: 100%; }
    .site-footer__bottom-inner { align-items: flex-start; flex-direction: column; gap: 6px; padding-right: 68px; }
    .js [data-reveal="left"] { transform: translateX(-24px); }
    .js [data-reveal="right"] { transform: translateX(24px); }
    .kit-process__intro .section-title { font-size: clamp(30px, 9vw, 40px); }
    .process-path { grid-template-columns: 1fr 1fr; }
    .process-path__step:nth-child(2) { border-right: 0; }
    .process-path__step:nth-child(-n+2) { border-bottom: 1px solid rgba(33, 32, 30, .12); }
    .process-path__step { padding: 17px 14px; }
    .process-path__copy small { white-space: normal; }
    .kit-explorer__rail-head { display: none; }
    .kit-select { flex-basis: 190px; padding-block: 11px; }
    .kit-select__name small { display: none; }
    .kit-panel,
    .kit-panel.is-active { grid-template-columns: 1fr; }
    .kit-panel__media { min-height: 290px; padding: 56px 32px; }
    .kit-panel__media img { max-height: 170px; }
    .kit-panel__media::after { inset: 18px; }
    .kit-panel__phase { top: 18px; left: 18px; }
    .kit-panel__counter { right: 20px; bottom: 18px; }
    .kit-panel__body { padding: 34px 24px 38px; }
    .kit-panel__lead { font-size: 15px !important; }
    .kit-panel__details p { font-size: 13.5px; }
    .kit-panel__note { margin-top: 22px !important; }
    .process-principle { grid-template-columns: 1fr; gap: 14px; }
    .process-principle__line { width: 64px; }
    .process-principle .link-line { grid-column: auto; }
    .inner-hero { padding-top: 48px; }
    .about-vision__grid { grid-template-columns: 1fr; }
    .about-vision__head { position: static; }
    .about-values { grid-template-columns: 1fr; gap: 14px; }
    .about-values li { padding: 24px 22px; }
    .about-story__grid { gap: 48px; }
    .about-film { padding: 9px; }
    .about-film::before { left: -10px; top: -10px; width: 54px; height: 54px; }
    .about-maker__content { gap: 44px; }
    .about-maker__assurance { padding: 24px; }
    .about-explore__grid { grid-template-columns: 1fr; gap: 42px; }
    .about-explore__card:first-child { grid-column: auto; }
    .about-explore__card:first-child .about-explore__media { aspect-ratio: 3 / 2; }
    .reaction-formula { grid-template-columns: 1fr auto 1fr; padding: 46px 20px 26px; }
    .reaction-formula__node--bond { width: 64%; }
    .method-flow { grid-template-columns: 1fr; gap: 28px; }
    .method-flow li { padding-bottom: 8px; }
    .process-method__result { margin-top: 44px; }
    .process-guidance__analysis,
    .maintenance-panel { padding: 30px 24px; }
    .safety-warning { grid-template-columns: 1fr; }
    .safety-warning__signal { min-height: 112px; border-right: 0; border-bottom: 1px solid rgba(255,255,255,.2); }
    .safety-warning__signal span { width: 50px; height: 50px; font-size: 26px; }
    .safety-warning__body { padding: 30px 24px 36px; }
    .safety-warning__body ul { grid-template-columns: 1fr; }
    .site-footer__grid { grid-template-columns: 1fr; gap: 44px; }
    .wa-float { width: 50px; height: 50px; right: 16px; bottom: 16px; }
}

/* =========================================================
   CERTIFICATE PAGE
   ========================================================= */
.cert-intro { background: #fff; }
.cert-intro__grid { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr); gap: clamp(40px, 6vw, 104px); align-items: center; }
.cert-intro__copy .label { margin-bottom: 18px; color: var(--red); }
.cert-intro__copy .section-title { margin-bottom: 26px; font-size: clamp(32px, 3.8vw, 50px); line-height: 1.12; }
.cert-intro__copy .section-title em { color: var(--red); }
.cert-intro__copy p { max-width: 620px; margin: 0; font-size: 15px; line-height: 1.85; color: var(--muted); }
.cert-intro__copy .cert-intro__lead { margin-bottom: 16px; font-size: 17px; line-height: 1.75; color: var(--ink); }

.cert-scope { position: relative; padding: clamp(28px, 3.4vw, 44px); background: var(--bg); border: 1px solid var(--line); border-top: 2px solid var(--red); }
.cert-scope__seal { position: absolute; top: -26px; right: clamp(24px, 3vw, 40px); display: grid; place-items: center; width: 52px; height: 52px; border-radius: 50%; background: var(--ink-900); color: var(--green); box-shadow: 0 0 0 6px #fff; }
.cert-scope__seal .icon { width: 22px; height: 22px; }
.cert-scope__text { margin: 0 0 24px; padding-right: 48px; font-family: var(--font-display); font-size: clamp(18px, 1.7vw, 22px); font-weight: 600; line-height: 1.5; color: var(--ink); }
.cert-scope__list { display: grid; }
.cert-scope__list li { display: flex; align-items: center; gap: 16px; padding: 15px 0; border-top: 1px solid var(--line); font-family: var(--font-head); font-size: 12px; font-weight: 600; letter-spacing: .12em; text-transform: uppercase; color: var(--ink); }
.cert-scope__list li span { font-family: var(--font-serif); font-size: 17px; font-style: italic; font-weight: 400; letter-spacing: 0; color: var(--red); }

.cert-wall { position: relative; isolation: isolate; overflow: hidden; background: var(--ink-950); color: rgba(255, 255, 255, .62); }
.cert-wall .hero__blueprint { opacity: .06; }
.cert-wall__head { display: flex; align-items: center; justify-content: space-between; gap: 24px; margin-bottom: clamp(36px, 4.5vw, 56px); padding-bottom: 20px; border-bottom: 1px solid var(--line-dark); }
.cert-wall__head .label { margin: 0; }
.cert-wall__count { font-family: var(--font-serif); font-size: 22px; font-style: italic; color: var(--green); }

.cert-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: clamp(18px, 2vw, 28px); }
.cert-card { display: flex; }
.cert-card__link { display: flex; flex-direction: column; width: 100%; color: inherit; }
.cert-card__paper { position: relative; display: block; aspect-ratio: 1 / 1.414; padding: clamp(10px, 1vw, 14px); background: #fff; border-radius: 2px; box-shadow: 0 1px 0 rgba(255, 255, 255, .08), 0 24px 48px -28px rgba(0, 0, 0, .9); overflow: hidden; }
.cert-card__paper img { width: 100%; height: 100%; object-fit: contain; object-position: center top; }
.cert-card__paper::after { content: ""; position: absolute; inset: 0; background: rgba(19, 18, 18, .55); opacity: 0; transition: opacity .35s var(--ease); }
.cert-card__zoom { position: absolute; z-index: 1; top: 50%; left: 50%; display: grid; place-items: center; width: 48px; height: 48px; margin: -24px 0 0 -24px; border-radius: 50%; background: var(--red); color: #fff; opacity: 0; transition: opacity .35s var(--ease); }
.cert-card__zoom .icon { width: 18px; height: 18px; }
.cert-card__link:hover .cert-card__paper::after,
.cert-card__link:focus-visible .cert-card__paper::after,
.cert-card__link:hover .cert-card__zoom,
.cert-card__link:focus-visible .cert-card__zoom { opacity: 1; }
.cert-card__link:focus-visible { outline: 2px solid var(--red); outline-offset: 4px; }
.cert-card__meta { display: grid; grid-template-columns: auto 1fr; gap: 4px 14px; flex: 1; padding: 18px 2px 0; border-top: 1px solid transparent; }
.cert-card__num { grid-row: span 2; font-family: var(--font-serif); font-size: 17px; font-style: italic; line-height: 1.3; color: var(--red); }
.cert-card__title { font-family: var(--font-head); font-size: 13px; font-weight: 600; line-height: 1.45; color: #fff; transition: color .3s; }
.cert-card__issuer { font-family: var(--font-head); font-size: 10px; font-weight: 600; line-height: 1.5; letter-spacing: .12em; text-transform: uppercase; color: rgba(255, 255, 255, .45); }
.cert-card__link:hover .cert-card__title { color: var(--green); }

.cert-viewer { width: 100%; max-width: none; height: 100%; max-height: none; margin: 0; padding: 0; border: 0; background: transparent; color: #fff; }
.cert-viewer[open] { display: grid; grid-template-rows: auto 1fr; animation: cert-viewer-in .3s var(--ease) both; }
.cert-viewer::backdrop { background: rgba(13, 12, 12, .94); }
.cert-viewer__bar { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 18px var(--gutter); border-bottom: 1px solid var(--line-dark); }
.cert-viewer__title { display: flex; align-items: baseline; gap: 14px; margin: 0; font-family: var(--font-head); font-size: 13px; font-weight: 600; color: #fff; }
.cert-viewer__title span:first-child { font-family: var(--font-serif); font-size: 17px; font-style: italic; font-weight: 400; color: var(--green); }
.cert-viewer__close,
.cert-viewer__nav { display: grid; place-items: center; width: 44px; height: 44px; border: 1px solid rgba(255, 255, 255, .2); border-radius: 50%; background: transparent; color: #fff; cursor: pointer; transition: background-color .3s, border-color .3s; }
.cert-viewer__close:hover,
.cert-viewer__nav:hover { background: var(--red); border-color: var(--red); }
.cert-viewer__close .icon,
.cert-viewer__nav .icon { width: 18px; height: 18px; }
.cert-viewer__stage { display: grid; place-items: center; min-height: 0; margin: 0; padding: 24px 84px; }
.cert-viewer__stage img { max-width: 100%; max-height: calc(100vh - 130px); max-height: calc(100dvh - 130px); width: auto; height: auto; background: #fff; box-shadow: 0 30px 80px -30px rgba(0, 0, 0, .9); }
.cert-viewer__nav { position: fixed; top: 50%; margin-top: -22px; }
.cert-viewer__nav--prev { left: var(--gutter); }
.cert-viewer__nav--prev .icon { transform: rotate(180deg); }
.cert-viewer__nav--next { right: var(--gutter); }
html.has-modal { overflow: hidden; }
@keyframes cert-viewer-in { from { opacity: 0; } to { opacity: 1; } }

.cert-uses { background: #fff; }
.cert-uses__grid { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: clamp(40px, 7vw, 120px); align-items: start; }
.cert-uses__head .label { margin-bottom: 18px; color: var(--red); }
.cert-uses__head .section-title { font-size: clamp(28px, 3.2vw, 44px); line-height: 1.15; }
.cert-uses__head .section-title em { display: block; margin-top: 8px; color: var(--red); }
.cert-uses__copy { display: grid; gap: 28px; padding-top: 8px; }
.cert-uses__copy p { position: relative; margin: 0; padding: 0 0 28px 52px; border-bottom: 1px solid var(--line); font-size: 15.5px; line-height: 1.85; color: var(--muted); }
.cert-uses__copy p:last-child { padding-bottom: 0; border-bottom: 0; }
.cert-uses__num { position: absolute; left: 0; top: 0; font-family: var(--font-serif); font-size: 18px; font-style: italic; color: var(--red); }

@media (max-width: 1100px) {
    .cert-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (max-width: 960px) {
    .cert-intro__grid,
    .cert-uses__grid { grid-template-columns: 1fr; }
    .cert-scope { margin-top: 12px; }
}
@media (max-width: 640px) {
    .cert-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px 12px; }
    .cert-card__meta { grid-template-columns: 1fr; padding-top: 12px; }
    .cert-card__num { grid-row: auto; font-size: 15px; }
    .cert-card__title { font-size: 12px; }
    .cert-card__issuer { font-size: 9px; }
    .cert-card__zoom { opacity: 1; width: 36px; height: 36px; margin: 0; top: auto; left: auto; right: 8px; bottom: 8px; }
    .cert-scope__text { padding-right: 0; }
    .cert-uses__copy p { padding-left: 40px; }
    .cert-viewer__stage { padding: 16px 16px 84px; }
    .cert-viewer__stage img { max-height: calc(100dvh - 190px); }
    .cert-viewer__nav { top: auto; bottom: 20px; margin-top: 0; }
}

/* =========================================================
   CONTACT PAGE
   ========================================================= */
.contact-touch { background: #fff; }
.contact-touch__grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(40px, 7vw, 120px); align-items: center; }
.contact-touch__copy .label { margin-bottom: 18px; color: var(--red); }
.contact-touch__copy .section-title { margin-bottom: 26px; font-size: clamp(34px, 4.2vw, 56px); line-height: 1.08; }
.contact-touch__copy .section-title em { color: var(--red); }
.contact-touch__copy p { max-width: 600px; margin: 0; font-size: 16.5px; line-height: 1.85; color: var(--ink); }

.contact-quick { display: grid; border-top: 1px solid var(--line); }
.contact-quick a { display: grid; grid-template-columns: 48px 88px 1fr 20px; align-items: center; gap: 18px; padding: 22px 4px; border-bottom: 1px solid var(--line); color: var(--ink); transition: padding-left .35s var(--ease), color .3s; }
.contact-quick__icon { display: grid; place-items: center; width: 48px; height: 48px; border: 1px solid var(--line); border-radius: 50%; color: var(--red); transition: background-color .3s, border-color .3s, color .3s; }
.contact-quick__icon .icon { width: 18px; height: 18px; }
.contact-quick__label { font-family: var(--font-head); font-size: 10.5px; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); }
.contact-quick__value { font-family: var(--font-display); font-size: clamp(17px, 1.7vw, 22px); font-weight: 600; overflow-wrap: anywhere; }
.contact-quick a > .icon { width: 18px; height: 18px; color: var(--muted); transition: transform .3s var(--ease), color .3s; }
.contact-quick a:hover { padding-left: 12px; color: var(--red); }
.contact-quick a:hover .contact-quick__icon { background: var(--red); border-color: var(--red); color: #fff; }
.contact-quick a:hover > .icon { color: var(--red); transform: translateX(4px); }

.contact-offices { position: relative; isolation: isolate; overflow: hidden; background: var(--ink-950); color: rgba(255, 255, 255, .62); }
.contact-offices .hero__blueprint { opacity: .06; }
.office-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border: 1px solid var(--line-dark); }
.office-card { position: relative; display: flex; flex-direction: column; padding: clamp(26px, 2.6vw, 36px); background: rgba(255, 255, 255, .02); transition: background-color .35s var(--ease); }
.office-card + .office-card { border-left: 1px solid var(--line-dark); }
.office-card::before { content: ""; position: absolute; top: -1px; left: -1px; right: -1px; height: 2px; background: var(--red); transform: scaleX(0); transform-origin: left; transition: transform .45s var(--ease); }
.office-card:hover { background: rgba(255, 255, 255, .045); }
.office-card:hover::before { transform: scaleX(1); }
.office-card__head { display: flex; align-items: center; justify-content: space-between; margin-bottom: clamp(32px, 4vw, 52px); }
.office-card__num { font-family: var(--font-serif); font-size: 20px; font-style: italic; color: var(--green); }
.office-card__pin { display: grid; place-items: center; width: 40px; height: 40px; border: 1px solid rgba(255, 255, 255, .16); border-radius: 50%; color: var(--red); }
.office-card__pin .icon { width: 17px; height: 17px; }
.office-card__name { margin: 0; font-size: clamp(21px, 1.8vw, 25px); font-weight: 600; line-height: 1.2; color: #fff; }
.office-card__tag { margin: 6px 0 22px; font-family: var(--font-head); font-size: 10.5px; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; color: var(--red); }
.office-card__address { flex: 1; margin: 0 0 26px; font-style: normal; font-size: 14px; line-height: 1.85; color: rgba(255, 255, 255, .66); }
.office-card__contacts { display: grid; gap: 14px; padding-top: 22px; border-top: 1px solid var(--line-dark); }
.office-card__contacts li { display: flex; align-items: flex-start; gap: 12px; }
.office-card__icon { flex: none; display: grid; place-items: center; width: 28px; height: 28px; margin-top: 1px; border-radius: 50%; background: rgba(169, 206, 73, .1); color: var(--green); }
.office-card__icon .icon { width: 13px; height: 13px; }
.office-card__line { display: grid; gap: 2px; min-width: 0; }
.office-card__label { font-family: var(--font-head); font-size: 9.5px; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; color: rgba(255, 255, 255, .42); }
.office-card__line a,
.office-card__value { font-family: var(--font-head); font-size: 13px; font-weight: 500; line-height: 1.55; color: #fff; overflow-wrap: anywhere; }
.office-card__line a { transition: color .3s; }
.office-card__line a:hover { color: var(--green); }

.contact-map { background: #fff; }
.contact-map__box { position: relative; max-width: 1200px; height: clamp(380px, 40vw, 500px); margin-inline: auto; overflow: hidden; background: var(--stone); border: 1px solid var(--line); border-radius: 2px; }
.contact-map__frame { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; filter: grayscale(1) contrast(1.05); transition: filter .5s var(--ease); }
.contact-map__box:hover .contact-map__frame { filter: none; }
.contact-map__card { position: absolute; top: 50%; left: clamp(20px, 3vw, 40px); width: min(320px, calc(100% - 40px)); padding: 28px; background: #fff; border-top: 2px solid var(--red); box-shadow: 0 30px 60px -30px rgba(19, 18, 18, .45); transform: translateY(-50%); }
.contact-map__pin { display: grid; place-items: center; width: 40px; height: 40px; margin-bottom: 18px; border-radius: 50%; background: var(--red); color: #fff; }
.contact-map__pin .icon { width: 17px; height: 17px; }
.contact-map__name { margin: 0; font-family: var(--font-display); font-size: 21px; font-weight: 600; color: var(--ink); }
.contact-map__tag { margin: 4px 0 16px; font-family: var(--font-head); font-size: 10.5px; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; color: var(--red); }
.contact-map__card address { font-style: normal; font-size: 13.5px; line-height: 1.8; color: var(--muted); }

@media (max-width: 1180px) {
    .office-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .office-card + .office-card { border-left: 0; }
    .office-card:nth-child(even) { border-left: 1px solid var(--line-dark); }
    .office-card:nth-child(n+3) { border-top: 1px solid var(--line-dark); }
}
@media (max-width: 960px) {
    .contact-touch__grid { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
    .office-grid { grid-template-columns: 1fr; }
    .office-card:nth-child(even) { border-left: 0; }
    .office-card + .office-card { border-top: 1px solid var(--line-dark); }
    .contact-quick a { grid-template-columns: 42px 1fr 18px; gap: 6px 14px; }
    .contact-quick__icon { grid-row: span 2; width: 42px; height: 42px; }
    .contact-quick__label { grid-column: 2; }
    .contact-quick__value { grid-column: 2; }
    .contact-quick a > .icon { grid-column: 3; grid-row: 1 / span 2; }
    .contact-map__box { height: auto; overflow: visible; border: 0; background: transparent; }
    .contact-map__frame { position: relative; display: block; height: 300px; border: 1px solid var(--line); }
    .contact-map__card { position: relative; top: auto; left: auto; width: auto; margin: -36px 14px 0; transform: none; }
}

/* =========================================================
   SITEMAP PAGE (flowchart tree)
   ========================================================= */
.sitemap { background: var(--bg); }
.sitemap__head { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px 40px; flex-wrap: wrap; margin-bottom: clamp(48px, 6vw, 80px); padding-bottom: 26px; border-bottom: 1px solid var(--line); }
.sitemap__head .label { margin-bottom: 16px; color: var(--red); }
.sitemap__head .section-title { margin: 0; font-size: clamp(30px, 3.6vw, 48px); line-height: 1.1; }
.sitemap__head .section-title em { color: var(--red); }
.sitemap__legend { display: flex; flex-wrap: wrap; gap: 10px 22px; }
.sitemap__legend li { display: flex; align-items: center; gap: 9px; font-family: var(--font-head); font-size: 10.5px; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); }
.sitemap__key { width: 14px; height: 14px; border-radius: 2px; }
.sitemap__key--root { background: var(--ink-900); box-shadow: inset 0 2px 0 var(--red); }
.sitemap__key--page { background: #fff; border: 1px solid var(--line); box-shadow: inset 0 2px 0 var(--red); }
.sitemap__key--section { width: 8px; height: 8px; margin-inline: 3px; border-radius: 50%; background: var(--green); }

/* nodes */
.sm-node { position: relative; z-index: 1; display: grid; gap: 4px; padding: 16px 18px; background: #fff; border: 1px solid var(--line); border-top: 2px solid var(--red); border-radius: 2px; color: var(--ink); transition: border-color .3s, box-shadow .3s, background-color .3s; }
a.sm-node:hover { border-color: var(--red); box-shadow: 0 18px 36px -24px rgba(19, 18, 18, .4); }
.sm-node__num { font-family: var(--font-serif); font-size: 15px; font-style: italic; line-height: 1; color: var(--red); }
.sm-node__title { font-family: var(--font-display); font-size: 16px; font-weight: 600; line-height: 1.3; }
.sm-node__path { font-family: var(--font-head); font-size: 10px; font-weight: 500; letter-spacing: .04em; color: var(--muted); overflow-wrap: anywhere; }
.sm-node--root { width: min(280px, 100%); margin-inline: auto; padding: 20px 24px; background: var(--ink-900); border-color: var(--ink-900); border-top-color: var(--red); text-align: center; color: #fff; }
.sm-node--root .sm-node__title { font-size: 22px; }
.sm-node--root .sm-node__num { color: var(--green); }
.sm-node--root .sm-node__path { color: rgba(255, 255, 255, .5); }
a.sm-node--root:hover { background: var(--ink); border-color: var(--ink); }
.sm-node--group { background: var(--stone); border-style: dashed; border-top: 2px solid var(--ink-900); }
.sm-node--group .sm-node__num { color: var(--ink); }
.sm-node--sub { padding: 13px 15px; }
.sm-node--sub .sm-node__title { font-size: 14.5px; }

/* root -> branches connectors */
.sm-root { position: relative; padding-bottom: 36px; }
.sm-root::after { content: ""; position: absolute; left: 50%; bottom: 0; width: 1px; height: 36px; background: var(--ink); }
.sm-branches { position: relative; display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 0; }
.sm-branches::before { content: ""; position: absolute; top: 0; left: 10%; right: 10%; height: 1px; background: var(--ink); }
.sm-branch { position: relative; padding: 36px 9px 0; }
.sm-branch::before { content: ""; position: absolute; top: 0; left: 50%; width: 1px; height: 36px; background: var(--ink); }
.sm-branch::after { content: ""; position: absolute; top: -3px; left: calc(50% - 3px); width: 7px; height: 7px; border-radius: 50%; background: var(--red); }

/* page -> children / sections rails */
.sm-children,
.sm-leaves { position: relative; display: grid; margin-left: 18px; padding-top: 12px; }
.sm-children > li,
.sm-leaves > li { position: relative; padding-left: 18px; }
.sm-children > li + li { padding-top: 18px; }
.sm-leaves > li + li { padding-top: 8px; }
/* vertical rail: full height on each item, stops at the tick on the last one */
.sm-children > li::after,
.sm-leaves > li::after { content: ""; position: absolute; top: 0; bottom: 0; left: 0; border-left: 1px dashed rgba(43, 42, 41, .35); }
.sm-children > li:last-child::after { bottom: auto; height: 22px; }
.sm-children > li + li:last-child::after { height: 40px; }
.sm-leaves > li:last-child::after { bottom: auto; height: 18px; }
.sm-leaves > li + li:last-child::after { height: 26px; }
/* horizontal tick into each node */
.sm-children > li::before,
.sm-leaves > li::before { content: ""; position: absolute; top: 22px; left: 0; width: 18px; border-top: 1px dashed rgba(43, 42, 41, .35); }
.sm-children > li + li::before { top: 40px; }
.sm-leaves > li::before { top: 18px; }
.sm-leaves > li + li::before { top: 26px; }
.sm-children .sm-leaves { margin-left: 14px; }
.sm-leaf { display: flex; align-items: flex-start; gap: 10px; padding: 10px 12px; background: rgba(255, 255, 255, .55); border: 1px solid var(--line); border-radius: 2px; font-family: var(--font-head); font-size: 12px; font-weight: 500; line-height: 1.5; color: var(--ink); transition: background-color .3s, border-color .3s, color .3s; }
.sm-leaf__dot { flex: none; width: 7px; height: 7px; margin-top: 5px; border-radius: 50%; background: var(--green); }
.sm-leaf:hover { background: #fff; border-color: var(--green); color: var(--red); }

@media (max-width: 1180px) {
    .sm-branches::before { display: none; }
    .sm-root { padding-bottom: 22px; }
    .sm-root::after { display: block; left: 24px; height: 22px; }
    .sm-branches { grid-template-columns: 1fr; row-gap: 0; margin-left: 24px; }
    .sm-branch { padding: 0 0 26px 22px; background: linear-gradient(var(--ink), var(--ink)) 0 0 / 1px 100% no-repeat; }
    .sm-branch:last-child { padding-bottom: 0; background-size: 1px 30px; }
    .sm-branch::before { display: block; top: 30px; left: 0; width: 22px; height: 1px; }
    .sm-branch::after { display: block; top: 27px; left: -3px; }
    .sm-node--root { margin-inline: 0; text-align: left; }
    .sm-node { max-width: 520px; }
    .sm-children,
    .sm-leaves { max-width: 560px; }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: .01ms !important;
        transition-duration: .01ms !important;
        scroll-behavior: auto !important;
    }
    .js [data-reveal] { opacity: 1; transform: none; }
}