:root {
    --ink: #111316;
    --ink-2: #1b1e22;
    --paper: #f4f3ef;
    --soft: #ebeae5;
    --line: rgba(17, 19, 22, .14);
    --white: #fff;
    --red: #d51f2f;
    --gold: #d9aa22;
    --muted: #686c72;
    --container: 1240px;
    --shadow: 0 24px 70px rgba(7, 9, 11, .16);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    color: var(--ink);
    background: var(--paper);
    font-family: Inter, "Segoe UI", Arial, sans-serif;
    -webkit-font-smoothing: antialiased;
}
body.menu-open { overflow: hidden; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
button { color: inherit; }
.container { width: min(calc(100% - 64px), var(--container)); margin-inline: auto; }
.section { padding: 112px 0; }
.section-soft { background: var(--soft); }
.section-dark { color: var(--white); background: var(--ink); }
.kicker {
    display: inline-flex;
    align-items: center;
    gap: 11px;
    margin-bottom: 22px;
    font-size: 12px;
    font-weight: 800;
    letter-spacing: .18em;
    line-height: 1.2;
}
.kicker::before {
    width: 28px;
    height: 2px;
    content: "";
    background: linear-gradient(90deg, var(--red) 0 50%, var(--gold) 50%);
}
.kicker.light { color: rgba(255,255,255,.78); }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { letter-spacing: -.035em; }
h2 {
    margin-bottom: 24px;
    font-size: clamp(38px, 5vw, 68px);
    font-weight: 580;
    line-height: .99;
}
p { color: var(--muted); font-size: 17px; line-height: 1.72; }
.section-dark p { color: rgba(255,255,255,.62); }
.button {
    min-height: 54px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 28px;
    padding: 0 25px;
    border: 1px solid var(--ink);
    color: var(--white);
    background: var(--ink);
    font-size: 13px;
    font-weight: 800;
    letter-spacing: .04em;
    transition: transform .25s ease, color .25s ease, background .25s ease;
}
.button b { font-size: 17px; }
.button:hover { transform: translateY(-3px); background: var(--red); border-color: var(--red); }
.button-secondary {
    color: var(--ink);
    background: transparent;
    border-color: rgba(17,19,22,.45);
}
.home-hero .button-secondary, .inner-hero .button-secondary {
    color: var(--white);
    border-color: rgba(255,255,255,.55);
}
.button-secondary:hover { color: var(--white); }
.section-head {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(280px, .55fr);
    gap: 70px;
    align-items: end;
    margin-bottom: 56px;
}
.section-head h2 { margin-bottom: 0; }
.section-head p { margin-bottom: 4px; }

/* Header */
.site-header {
    position: fixed;
    z-index: 1000;
    inset: 0 0 auto;
    color: var(--white);
    transition: color .25s ease, background .25s ease, box-shadow .25s ease;
}
.site-header.scrolled {
    color: var(--ink);
    background: rgba(255,255,255,.96);
    box-shadow: 0 12px 35px rgba(0,0,0,.08);
    backdrop-filter: blur(16px);
}
.header-line {
    height: 3px;
    background: linear-gradient(90deg, var(--ink) 0 70%, var(--red) 70% 85%, var(--gold) 85%);
}
.header-inner {
    min-height: 86px;
    display: grid;
    grid-template-columns: 210px 1fr auto;
    align-items: center;
    gap: 30px;
}
.brand {
    width: 184px;
    height: 42px;
    display: flex;
    align-items: center;
    padding: 0;
    background: transparent;
}
.brand img {
    width: 100%;
    max-height: 42px;
    object-fit: contain;
    object-position: left center;
    filter: brightness(0) invert(1);
    transition: filter .25s ease;
}
.site-header.scrolled .brand img { filter: none; }
.desktop-nav { display: flex; justify-content: center; align-items: center; gap: 34px; }
.desktop-nav a {
    position: relative;
    padding: 34px 0 31px;
    font-size: 13px;
    font-weight: 700;
}
.desktop-nav a::after {
    position: absolute;
    height: 2px;
    content: "";
    inset: auto 50% 23px;
    background: var(--red);
    transition: inset .22s ease;
}
.desktop-nav a:hover::after, .desktop-nav a.active::after { inset-inline: 0; }
.header-actions { display: flex; align-items: center; gap: 20px; }
.language-switch { display: flex; align-items: center; gap: 7px; }
.language-switch button {
    padding: 4px 1px;
    border: 0;
    opacity: .5;
    color: inherit;
    background: none;
    cursor: pointer;
    font-size: 10px;
    font-weight: 800;
}
.language-switch button.active { opacity: 1; color: var(--gold); }
.site-header.scrolled .language-switch button.active { color: var(--red); }
.language-switch span { width: 1px; height: 10px; opacity: .35; background: currentColor; }
.header-contact {
    min-height: 43px;
    display: inline-flex;
    align-items: center;
    gap: 13px;
    padding: 0 17px;
    border: 1px solid rgba(255,255,255,.45);
    font-size: 12px;
    font-weight: 800;
}
.site-header.scrolled .header-contact { border-color: var(--line); }
.header-contact:hover, .header-contact.active { color: var(--white); background: var(--red); border-color: var(--red); }
.menu-button {
    width: 44px;
    height: 44px;
    display: none;
    padding: 0;
    border: 1px solid currentColor;
    background: transparent;
}
.menu-button i { width: 18px; height: 1px; display: block; margin: 5px auto; background: currentColor; }
.mobile-nav { display: none; }

/* Home hero */
.home-hero {
    min-height: 760px;
    height: min(900px, 100vh);
    position: relative;
    overflow: hidden;
    color: var(--white);
    background: var(--ink);
}
.hero-visual, .hero-main-image, .hero-image-overlay { position: absolute; inset: 0; }
.hero-main-image { width: 100%; height: 100%; object-fit: cover; object-position: center; }
.hero-image-overlay {
    background:
        linear-gradient(90deg, rgba(5,7,9,.92) 0%, rgba(5,7,9,.72) 43%, rgba(5,7,9,.25) 76%, rgba(5,7,9,.42)),
        linear-gradient(0deg, rgba(5,7,9,.5), transparent 48%);
}
.hero-image-overlay::after {
    width: 42%;
    position: absolute;
    content: "";
    inset: 0 auto 0 -45%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,.08), transparent);
    transform: skewX(-12deg);
}
.hero-content {
    height: 100%;
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    padding-top: 100px;
}
.hero-content h1 {
    max-width: 850px;
    margin-bottom: 28px;
    font-size: clamp(58px, 8.4vw, 116px);
    font-weight: 520;
    line-height: .82;
}
.hero-content h1 .hero-line { display: inline-block; color: var(--white); }
.hero-content h1 .hero-outline { color: transparent; -webkit-text-stroke: 1.4px rgba(255,255,255,.82); }
.hero-content > p { max-width: 650px; margin-bottom: 34px; color: rgba(255,255,255,.76); font-size: 18px; }
.hero-actions { display: flex; gap: 12px; }
.hero-side-card {
    width: 250px;
    position: absolute;
    z-index: 3;
    right: 0;
    bottom: 0;
    border-left: 1px solid rgba(255,255,255,.18);
    background: rgba(8,10,12,.84);
}
.hero-side-card img { width: 100%; height: 165px; object-fit: cover; transition: transform .7s cubic-bezier(.2,.75,.2,1); }
.hero-side-card:hover img { transform: scale(1.07); }
.hero-side-card div { padding: 20px 24px 24px; }
.hero-side-card small { display: block; margin-bottom: 6px; color: var(--gold); font-size: 10px; font-weight: 800; letter-spacing: .16em; }
.hero-side-card strong { font-size: 22px; letter-spacing: .05em; }
.hero-scroll {
    position: absolute;
    z-index: 3;
    bottom: 28px;
    left: 25px;
    display: flex;
    align-items: center;
    gap: 10px;
    color: rgba(255,255,255,.55);
    font-size: 9px;
    font-weight: 800;
    letter-spacing: .18em;
    writing-mode: vertical-rl;
}
.hero-scroll span { width: 1px; height: 38px; position: relative; overflow: hidden; background: rgba(255,255,255,.18); }
.hero-scroll span::after { width: 100%; height: 45%; position: absolute; content: ""; inset: -50% 0 auto; background: var(--white); }
.number-strip { color: var(--white); background: var(--ink-2); border-top: 1px solid rgba(255,255,255,.08); }
.number-grid { display: grid; grid-template-columns: repeat(3, 1fr) 1.15fr; }
.number-grid > div {
    min-height: 142px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 24px 32px;
    border-left: 1px solid rgba(255,255,255,.1);
}
.number-grid strong { color: var(--white); font-size: 42px; font-weight: 530; }
.number-grid span { color: rgba(255,255,255,.52); font-size: 12px; }
.number-grid .number-logo {
    align-items: center;
    color: var(--white);
    font-size: 27px;
    font-weight: 850;
    letter-spacing: .16em;
    border-right: 1px solid rgba(255,255,255,.1);
}
.number-logo span { color: var(--gold); font-size: inherit; }

/* General grids */
.split-intro-grid, .editorial-grid, .system-intro-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(320px, .78fr);
    gap: 11vw;
    align-items: start;
}
.split-title h2, .editorial-grid h2, .system-intro-grid h2 { margin-bottom: 0; }
.split-copy p, .editorial-copy p { font-size: 18px; }
.inline-points { display: grid; gap: 0; margin: 28px 0 34px; border-top: 1px solid var(--line); }
.inline-points span { position: relative; padding: 14px 0 14px 23px; border-bottom: 1px solid var(--line); font-size: 13px; font-weight: 750; }
.inline-points span::before { position: absolute; left: 1px; content: "＋"; color: var(--red); }

/* Categories */
.section-dark .section-head .kicker::before { background: linear-gradient(90deg, var(--red) 0 50%, var(--gold) 50%); }
.category-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2px; }
.category-card {
    min-height: 500px;
    position: relative;
    overflow: hidden;
    color: var(--white);
    background: #222;
}
.category-card > img {
    width: 100%;
    height: 100%;
    position: absolute;
    inset: 0;
    object-fit: cover;
    transition: transform .6s ease;
}
.category-card::after {
    position: absolute;
    content: "";
    inset: 0;
    background: linear-gradient(0deg, rgba(5,7,9,.95), rgba(5,7,9,.07) 68%);
}
.category-card > div { position: absolute; z-index: 2; inset: auto 0 0; padding: 36px; }
.category-card > div > span { color: var(--gold); font-size: 12px; font-weight: 800; }
.category-card h3 { margin: 14px 0 12px; font-size: 30px; font-weight: 560; }
.category-card p { min-height: 54px; margin-bottom: 15px; color: rgba(255,255,255,.65); font-size: 14px; line-height: 1.55; }
.category-card b { position: absolute; right: 34px; bottom: 34px; font-size: 20px; }
.category-card:hover img { transform: scale(1.06); }
.category-card:hover b { color: var(--gold); }

/* Products */
.products-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.product-card {
    min-width: 0;
    overflow: hidden;
    border: 1px solid rgba(17,19,22,.08);
    background: #fbfaf7;
    box-shadow: 0 8px 26px rgba(7,9,11,.04);
    transition: transform .3s ease, box-shadow .3s ease;
}
.product-card:hover { transform: translateY(-8px); box-shadow: var(--shadow); }
.product-card-image { height: 260px; position: relative; overflow: hidden; background: #ddd; }
.product-card-image img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.product-card:hover .product-card-image img { transform: scale(1.045); }
.product-card-image > span {
    width: 49px;
    height: 49px;
    position: absolute;
    right: 0;
    bottom: 0;
    display: grid;
    place-items: center;
    color: var(--white);
    background: var(--ink);
    font-size: 12px;
    font-weight: 800;
}
.product-card-body { padding: 26px 28px 22px; }
.product-card-body small {
    display: block;
    min-height: 31px;
    margin-bottom: 8px;
    color: var(--red);
    font-size: 9px;
    font-weight: 850;
    letter-spacing: .1em;
    line-height: 1.5;
}
.product-card-body h3 { margin-bottom: 12px; font-size: 27px; font-weight: 600; }
.product-card-body p { min-height: 76px; margin-bottom: 22px; font-size: 14px; line-height: 1.55; }
.product-card-foot {
    display: flex;
    justify-content: space-between;
    padding-top: 18px;
    border-top: 1px solid var(--line);
    font-size: 12px;
    font-weight: 800;
}
.product-card-foot b { color: var(--red); font-size: 17px; transition: transform .25s ease; }
.product-card:hover .product-card-foot b { transform: translateX(5px); }
.section-button { margin-top: 46px; text-align: center; }
.catalog-top { display: flex; justify-content: space-between; align-items: flex-end; margin-bottom: 45px; padding-bottom: 24px; border-bottom: 1px solid var(--line); }
.catalog-top .kicker { margin-bottom: 0; }
.catalog-top strong { color: rgba(17,19,22,.17); font-size: 74px; font-weight: 500; line-height: .8; }
.subsection-title { margin: 52px 0 24px; font-size: 18px; font-weight: 700; }
.technical-note { margin: 42px 0 0; padding: 20px 24px; border-left: 3px solid var(--gold); background: var(--soft); font-size: 13px; }

/* Process, why, values */
.process-section { background: var(--white); }
.process-grid { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.process-grid article { min-height: 255px; padding: 30px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.process-grid article > span { display: block; margin-bottom: 64px; color: var(--red); font-size: 12px; font-weight: 800; }
.process-grid h3 { margin-bottom: 12px; font-size: 23px; font-weight: 600; }
.process-grid p { margin-bottom: 0; font-size: 14px; line-height: 1.55; }
.process-grid.dark { border-color: rgba(255,255,255,.15); }
.process-grid.dark article { border-color: rgba(255,255,255,.15); }
.process-grid.dark article > span { color: var(--gold); }
.why-section { background: var(--soft); }
.why-grid { display: grid; grid-template-columns: .9fr 1fr; align-items: center; gap: 9vw; }
.why-visual { min-height: 650px; position: relative; }
.why-visual img { width: 86%; height: 610px; object-fit: cover; }
.why-visual > span {
    position: absolute;
    right: 0;
    bottom: 0;
    padding: 25px;
    color: var(--white);
    background: var(--ink);
    font-size: 15px;
    font-weight: 800;
    letter-spacing: .1em;
    line-height: 1.45;
}
.why-list { margin-top: 35px; border-top: 1px solid var(--line); }
.why-list article { display: grid; grid-template-columns: 48px 1fr; gap: 15px; padding: 22px 0; border-bottom: 1px solid var(--line); }
.why-list article > b { color: var(--red); font-size: 11px; }
.why-list h3 { margin-bottom: 6px; font-size: 19px; }
.why-list p { margin-bottom: 0; font-size: 14px; line-height: 1.55; }
.value-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); }
.value-grid article { min-height: 290px; padding: 32px; background: var(--paper); }
.section-soft .value-grid article { background: var(--white); }
.value-grid span { display: block; margin-bottom: 80px; color: var(--red); font-size: 12px; font-weight: 800; }
.value-grid h3 { margin-bottom: 13px; font-size: 24px; }
.value-grid p { margin-bottom: 0; font-size: 14px; line-height: 1.58; }

/* CTA and footer */
.cta { padding: 82px 0; color: var(--white); background: var(--red); }
.cta-inner { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 55px; }
.cta .kicker { margin-bottom: 14px; }
.cta .kicker::before { background: linear-gradient(90deg, var(--ink) 0 50%, var(--gold) 50%); }
.cta h2 { max-width: 850px; margin-bottom: 13px; font-size: clamp(38px, 4.6vw, 64px); }
.cta p { margin-bottom: 0; color: rgba(255,255,255,.72); }
.cta .button { color: var(--ink); background: var(--white); border-color: var(--white); }
.cta .button:hover { color: var(--white); background: var(--ink); border-color: var(--ink); }
.site-footer { color: var(--white); background: #0a0c0e; }
.footer-contact-bar { background: var(--ink-2); border-bottom: 1px solid rgba(255,255,255,.1); }
.footer-contact-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.footer-contact-grid a {
    min-height: 118px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 9px;
    padding: 25px 28px;
    border-left: 1px solid rgba(255,255,255,.1);
}
.footer-contact-grid a:last-child { border-right: 1px solid rgba(255,255,255,.1); }
.footer-contact-grid small { color: rgba(255,255,255,.42); font-size: 10px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.footer-contact-grid strong { color: var(--white); font-size: 14px; font-weight: 720; }
.footer-contact-grid a:hover strong { color: var(--gold); }
.footer-grid { display: grid; grid-template-columns: 1.5fr .7fr .9fr .8fr; gap: 60px; padding-top: 72px; padding-bottom: 70px; }
.footer-brand img {
    width: 190px;
    margin-bottom: 28px;
    padding: 0;
    background: transparent;
    filter: brightness(0) invert(1);
}
.footer-brand p { max-width: 340px; margin-bottom: 20px; color: rgba(255,255,255,.52); font-size: 14px; }
.footer-brand a { color: var(--gold); font-weight: 750; }
.footer-column { display: flex; flex-direction: column; align-items: flex-start; gap: 13px; }
.footer-column h3 { margin-bottom: 11px; color: rgba(255,255,255,.4); font-size: 11px; letter-spacing: .14em; text-transform: uppercase; }
.footer-column a { color: rgba(255,255,255,.76); font-size: 13px; }
.footer-column a:hover { color: var(--gold); }
.footer-bottom {
    min-height: 74px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: rgba(255,255,255,.38);
    border-top: 1px solid rgba(255,255,255,.1);
    font-size: 11px;
}

/* Inner pages */
.inner-hero {
    min-height: 550px;
    position: relative;
    display: flex;
    align-items: flex-end;
    overflow: hidden;
    padding: 180px 0 80px;
    color: var(--white);
    background: var(--ink);
}
.inner-hero > img { width: 100%; height: 100%; position: absolute; inset: 0; object-fit: cover; }
.inner-hero-shade { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(6,8,10,.94), rgba(6,8,10,.5) 55%, rgba(6,8,10,.25)); }
.inner-hero .container { position: relative; z-index: 2; }
.inner-hero h1 { max-width: 950px; margin-bottom: 22px; font-size: clamp(54px, 7vw, 94px); font-weight: 540; line-height: .9; }
.inner-hero p { max-width: 670px; margin-bottom: 0; color: rgba(255,255,255,.74); font-size: 18px; }
.editorial-copy p:last-child { margin-bottom: 0; }
.image-copy-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 8vw; align-items: center; }
.stacked-images { min-height: 620px; position: relative; }
.stacked-images img:first-child { width: 80%; height: 550px; object-fit: cover; }
.stacked-images img:last-child { width: 45%; height: 270px; position: absolute; right: 0; bottom: 0; object-fit: cover; border: 12px solid var(--soft); }
.large-copy { margin-bottom: 30px; font-size: 19px; }
.focus-labels { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 36px; }
.focus-labels span { padding: 10px 13px; border: 1px solid var(--line); font-size: 10px; font-weight: 800; letter-spacing: .12em; }
.range-banner { display: grid; grid-template-columns: 1fr 1fr; gap: 65px; align-items: center; }
.range-banner > div:first-child { padding: 50px 0; }
.range-banner p { max-width: 580px; margin-bottom: 32px; }
.range-images { height: 520px; position: relative; }
.range-images img:first-child { width: 78%; height: 450px; object-fit: cover; }
.range-images img:last-child { width: 46%; height: 260px; position: absolute; right: 0; bottom: 0; object-fit: cover; border: 10px solid var(--paper); }

/* Services */
.service-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.service-card { min-height: 420px; position: relative; padding: 42px; background: var(--white); }
.service-card > span { display: block; margin-bottom: 50px; color: var(--red); font-size: 12px; font-weight: 800; }
.service-card h3 { margin-bottom: 16px; font-size: 34px; }
.service-card p { max-width: 520px; font-size: 15px; }
.service-card ul { display: grid; gap: 10px; margin: 28px 0 0; padding: 22px 0 0; border-top: 1px solid var(--line); list-style: none; }
.service-card li { position: relative; padding-left: 22px; font-size: 13px; font-weight: 650; }
.service-card li::before { position: absolute; left: 0; content: "＋"; color: var(--red); }
.application-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 2px; }
.application-grid article {
    min-height: 430px;
    position: relative;
    overflow: hidden;
    background: #222 var(--bg) center / cover no-repeat;
}
.application-grid article::after { position: absolute; content: ""; inset: 0; background: linear-gradient(0deg, rgba(5,7,9,.95), rgba(5,7,9,.06) 70%); }
.application-grid article > div { position: absolute; z-index: 2; inset: auto 0 0; padding: 28px; }
.application-grid span { color: var(--gold); font-size: 11px; font-weight: 800; }
.application-grid h3 { margin: 13px 0 10px; font-size: 23px; }
.application-grid p { margin: 0; color: rgba(255,255,255,.62); font-size: 13px; line-height: 1.5; }
.faq-layout { display: grid; grid-template-columns: .75fr 1.25fr; gap: 9vw; }
.faq-list { border-top: 1px solid var(--line); }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 25px; cursor: pointer; font-size: 17px; font-weight: 700; list-style: none; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary span { color: var(--red); font-size: 24px; font-weight: 400; }
.faq-list details p { max-width: 740px; margin: -2px 45px 24px 0; font-size: 14px; }

/* System detail */
.system-hero { min-height: 680px; position: relative; display: flex; align-items: flex-end; overflow: hidden; padding: 170px 0 80px; color: var(--white); background: var(--ink); }
.system-hero-image, .system-hero-image img { width: 100%; height: 100%; position: absolute; inset: 0; }
.system-hero-image img { object-fit: cover; }
.system-hero::after { position: absolute; content: ""; inset: 0; background: linear-gradient(90deg, rgba(5,7,9,.94), rgba(5,7,9,.54) 55%, rgba(5,7,9,.2)); }
.system-hero-content { position: relative; z-index: 2; }
.back-link { display: block; margin-bottom: 65px; color: rgba(255,255,255,.63); font-size: 12px; font-weight: 750; }
.system-hero h1 { margin-bottom: 18px; font-size: clamp(62px, 9vw, 126px); font-weight: 520; line-height: .82; }
.system-hero p { max-width: 650px; margin-bottom: 0; color: rgba(255,255,255,.74); font-size: 18px; }
.system-hero-actions { display: flex; gap: 14px; margin-top: 30px; }
.system-hero-actions .button { color: var(--ink); background: var(--white); border-color: var(--white); }
.system-hero-actions .button:hover { color: var(--white); background: var(--red); border-color: var(--red); }
.system-highlight-strip { color: var(--white); background: var(--ink-2); }
.system-highlight-strip .container { display: grid; grid-template-columns: repeat(4, 1fr); }
.system-highlight-strip .container > div { min-height: 135px; display: flex; flex-direction: column; justify-content: center; padding: 25px 30px; border-left: 1px solid rgba(255,255,255,.1); }
.system-highlight-strip .container > div:last-child { border-right: 1px solid rgba(255,255,255,.1); }
.system-highlight-strip strong { margin-bottom: 4px; font-size: 28px; font-weight: 560; }
.system-highlight-strip span { color: rgba(255,255,255,.5); font-size: 11px; }
.system-jump-nav {
    position: sticky;
    z-index: 20;
    top: 89px;
    overflow-x: auto;
    color: var(--ink);
    background: rgba(255,255,255,.96);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 8px 28px rgba(7,9,11,.06);
    backdrop-filter: blur(16px);
}
.system-jump-nav .container { min-width: max-content; display: flex; align-items: center; gap: 34px; }
.system-jump-nav a {
    min-height: 60px;
    display: inline-flex;
    align-items: center;
    border-bottom: 2px solid transparent;
    font-size: 12px;
    font-weight: 800;
}
.system-jump-nav a:hover { color: var(--red); border-color: var(--red); }
.system-jump-nav .jump-quote { margin-left: auto; color: var(--red); }
#overview, #technical, #variants, #drawings, #form { scroll-margin-top: 150px; }
.system-data-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 9vw; }
.system-data-grid h2 { font-size: 48px; }
.spec-list { margin: 40px 0 0; }
.spec-list div { display: grid; grid-template-columns: 1fr auto; gap: 30px; padding: 16px 0; border-top: 1px solid rgba(255,255,255,.14); }
.spec-list div:last-child { border-bottom: 1px solid rgba(255,255,255,.14); }
.spec-list dt { color: rgba(255,255,255,.58); font-size: 13px; }
.spec-list dd { margin: 0; color: var(--white); font-size: 13px; font-weight: 750; text-align: right; }
.feature-list { display: grid; gap: 0; margin: 40px 0 0; padding: 0; border-top: 1px solid rgba(255,255,255,.14); list-style: none; }
.feature-list li { position: relative; padding: 18px 0 18px 30px; border-bottom: 1px solid rgba(255,255,255,.14); font-size: 14px; }
.feature-list li::before { position: absolute; left: 0; content: "＋"; color: var(--gold); }
.light-note { color: rgba(255,255,255,.55); background: rgba(255,255,255,.05); }
.application-name-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); }
.application-name-grid article { min-height: 190px; padding: 28px; background: var(--white); }
.application-name-grid span { display: block; margin-bottom: 58px; color: var(--red); font-size: 11px; font-weight: 800; }
.application-name-grid h3 { margin-bottom: 0; font-size: 21px; }
.variant-spec-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.variant-spec-grid article { padding: 38px; background: var(--white); box-shadow: 0 16px 45px rgba(7,9,11,.05); }
.variant-spec-grid h3 { margin-bottom: 28px; font-size: 34px; }
.variant-spec-grid dl { margin: 0; border-top: 1px solid var(--line); }
.variant-spec-grid dl div { display: grid; grid-template-columns: 1fr auto; gap: 28px; padding: 15px 0; border-bottom: 1px solid var(--line); }
.variant-spec-grid dt { color: var(--muted); font-size: 13px; }
.variant-spec-grid dd { margin: 0; font-size: 13px; font-weight: 800; text-align: right; }
.drawings-section { background: var(--white); }
.drawing-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; }
.drawing-grid.single { grid-template-columns: 1fr; }
.drawing-grid figure { min-width: 0; margin: 0; overflow: hidden; border: 1px solid rgba(255,255,255,.08); background: var(--ink); box-shadow: 0 18px 48px rgba(7,9,11,.09); }
.drawing-grid figure > div { aspect-ratio: 12 / 7; min-height: 260px; display: grid; place-items: center; padding: 0; background: var(--ink); }
.drawing-grid.single figure > div { min-height: 360px; }
.drawing-grid img { width: 100%; height: 100%; object-fit: cover; }
.drawing-grid figcaption { padding: 17px 20px; border-top: 1px solid rgba(255,255,255,.1); color: var(--white); background: var(--ink-2); font-size: 13px; font-weight: 750; }

/* Contact */
.contact-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); }
.contact-cards article { min-height: 300px; padding: 32px; background: var(--white); }
.contact-cards article > span { display: block; margin-bottom: 60px; color: var(--red); font-size: 11px; font-weight: 800; }
.contact-cards h3 { font-size: 25px; }
.contact-cards p { min-height: 76px; font-size: 14px; }
.contact-cards a, .contact-cards strong { color: var(--red); font-size: 13px; font-weight: 800; }
.contact-offices { padding-top: 96px; }
.office-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.office-grid article {
    min-height: 360px;
    display: grid;
    grid-template-columns: 70px 1fr;
    grid-template-rows: 1fr auto;
    gap: 26px;
    padding: 38px;
    color: var(--white);
    background: var(--ink);
}
.office-grid article > span { color: var(--gold); font-size: 12px; font-weight: 850; letter-spacing: .15em; }
.office-grid article > div small { display: block; margin-bottom: 25px; color: rgba(255,255,255,.44); font-size: 10px; font-weight: 800; letter-spacing: .13em; text-transform: uppercase; }
.office-grid h3 { margin-bottom: 0; font-size: clamp(24px, 2.5vw, 36px); font-weight: 540; line-height: 1.3; }
.office-grid a { grid-column: 2; justify-self: start; padding-bottom: 7px; color: var(--gold); border-bottom: 1px solid rgba(217,170,34,.5); font-size: 12px; font-weight: 800; }
.office-grid a:hover { color: var(--white); border-color: var(--white); }
.contact-layout { display: grid; grid-template-columns: 1.2fr .8fr; }
.form-panel { padding: 60px; background: var(--white); }
.form-panel h2 { font-size: 48px; }
form { display: grid; gap: 22px; margin-top: 38px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
label { display: grid; gap: 9px; color: #3e4248; font-size: 12px; font-weight: 750; }
input, select, textarea {
    width: 100%;
    padding: 15px 0;
    border: 0;
    border-bottom: 1px solid rgba(17,19,22,.28);
    border-radius: 0;
    outline: 0;
    color: var(--ink);
    background: transparent;
}
input:focus, select:focus, textarea:focus { border-color: var(--red); }
textarea { resize: vertical; }
form .button { width: max-content; margin-top: 10px; cursor: pointer; }
.form-delivery-note { max-width: 520px; margin: -6px 0 0; color: var(--muted); font-size: 12px; line-height: 1.55; }
.checklist-panel { padding: 60px 48px; color: var(--white); background: var(--ink); }
.checklist-panel h3 { margin-bottom: 35px; font-size: 31px; }
.checklist-panel ul { margin: 0 0 35px; padding: 0; border-top: 1px solid rgba(255,255,255,.14); list-style: none; }
.checklist-panel li { display: grid; grid-template-columns: 40px 1fr; gap: 10px; padding: 16px 0; border-bottom: 1px solid rgba(255,255,255,.14); color: rgba(255,255,255,.78); font-size: 13px; }
.checklist-panel li b { color: var(--gold); }
.checklist-panel p { color: rgba(255,255,255,.5); font-size: 13px; }
.checklist-panel a { color: var(--gold); font-weight: 800; }
.not-found { min-height: 75vh; display: grid; place-items: center; padding: 180px 32px 100px; text-align: center; }
.not-found > div { max-width: 700px; }
.not-found h1 { margin-bottom: 24px; font-size: clamp(52px, 8vw, 90px); }
.not-found p { margin-bottom: 30px; }

/* Motion */
@media (prefers-reduced-motion: no-preference) {
    .site-header { animation: headerDrop .65s cubic-bezier(.2,.75,.2,1) both; }
    .home-hero .hero-main-image { animation: heroDrift 18s ease-in-out infinite alternate; }
    .hero-image-overlay::after { animation: heroLight 10s ease-in-out 1.1s infinite; }
    .hero-content > .kicker { animation: rise .7s .08s cubic-bezier(.2,.75,.2,1) both; }
    .hero-content h1 .hero-line { animation: heroLineIn .85s cubic-bezier(.2,.75,.2,1) both; }
    .hero-content h1 .hero-line:nth-of-type(1) { animation-delay: .16s; }
    .hero-content h1 .hero-line:nth-of-type(2) { animation-delay: .28s; }
    .hero-content h1 .hero-line:nth-of-type(3) { animation-delay: .4s; }
    .hero-content > p { animation: rise .75s .5s cubic-bezier(.2,.75,.2,1) both; }
    .hero-content .hero-actions { animation: rise .75s .62s cubic-bezier(.2,.75,.2,1) both; }
    .hero-side-card { animation: sideCardIn .8s .55s cubic-bezier(.2,.75,.2,1) both; }
    .hero-scroll span::after { animation: scrollLine 2s ease-in-out infinite; }
    .inner-hero > img, .system-hero-image img { animation: subtleZoom 13s ease-in-out infinite alternate; }
    .inner-hero .container, .system-hero-content { animation: rise .75s .12s cubic-bezier(.2,.75,.2,1) both; }
    .motion-ready .reveal {
        opacity: 0;
        transform: translateY(34px);
        transition:
            opacity .75s cubic-bezier(.2,.75,.2,1),
            transform .75s cubic-bezier(.2,.75,.2,1);
        transition-delay: var(--reveal-delay, 0ms);
        will-change: opacity, transform;
    }
    .motion-ready .reveal.reveal-left { transform: translateX(-34px); }
    .motion-ready .reveal.reveal-right { transform: translateX(34px); }
    .motion-ready .reveal.is-visible { opacity: 1; transform: none; }

    @keyframes rise { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: none; } }
    @keyframes headerDrop { from { opacity: 0; transform: translateY(-18px); } to { opacity: 1; transform: none; } }
    @keyframes heroLineIn {
        from { opacity: 0; clip-path: inset(0 0 100% 0); transform: translateY(42px); }
        to { opacity: 1; clip-path: inset(0); transform: none; }
    }
    @keyframes heroDrift {
        from { transform: scale(1.04) translate3d(-.6%, 0, 0); }
        to { transform: scale(1.11) translate3d(.8%, -.7%, 0); }
    }
    @keyframes subtleZoom { from { transform: scale(1.01); } to { transform: scale(1.065); } }
    @keyframes heroLight { 0%, 55% { left: -45%; opacity: 0; } 70% { opacity: 1; } 100% { left: 115%; opacity: 0; } }
    @keyframes sideCardIn { from { opacity: 0; transform: translateX(45px); } to { opacity: 1; transform: none; } }
    @keyframes scrollLine { 0% { top: -50%; } 60%, 100% { top: 115%; } }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
}

/* Responsive */
@media (max-width: 1080px) {
    .container { width: min(calc(100% - 44px), var(--container)); }
    .desktop-nav { gap: 20px; }
    .desktop-nav a { font-size: 12px; }
    .header-inner { grid-template-columns: 190px 1fr auto; }
    .brand { width: 170px; }
    .header-contact { display: none; }
    .products-grid { grid-template-columns: repeat(2, 1fr); }
    .category-card { min-height: 440px; }
    .application-grid { grid-template-columns: repeat(2, 1fr); }
    .value-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-contact-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-contact-grid a:nth-child(2) { border-right: 1px solid rgba(255,255,255,.1); }
    .footer-contact-grid a:nth-child(-n+2) { border-bottom: 1px solid rgba(255,255,255,.1); }
    .footer-grid { grid-template-columns: 1.25fr .7fr .9fr; }
    .footer-systems { display: none; }
}

@media (max-width: 820px) {
    .section { padding: 82px 0; }
    .container { width: min(calc(100% - 34px), var(--container)); }
    .site-header { color: var(--ink); background: rgba(255,255,255,.96); }
    .site-header .brand img { filter: none; }
    .header-inner { min-height: 75px; grid-template-columns: 1fr auto; }
    .brand { width: 165px; }
    .desktop-nav { display: none; }
    .header-actions { gap: 14px; }
    .menu-button { display: block; }
    .mobile-nav {
        height: calc(100vh - 78px);
        position: fixed;
        inset: 78px 0 auto;
        display: flex;
        visibility: hidden;
        opacity: 0;
        flex-direction: column;
        padding: 34px;
        color: var(--white);
        background: var(--ink);
        transform: translateY(-15px);
        transition: opacity .2s ease, transform .2s ease, visibility .2s;
    }
    .mobile-nav.open { visibility: visible; opacity: 1; transform: none; }
    .mobile-nav a { padding: 18px 0; border-bottom: 1px solid rgba(255,255,255,.14); font-size: 24px; font-weight: 600; }
    .mobile-nav a.active { color: var(--gold); }
    .home-hero { min-height: 760px; height: 100svh; }
    .hero-content { padding-top: 120px; padding-bottom: 100px; }
    .hero-content h1 { font-size: clamp(53px, 14vw, 84px); }
    .hero-content > p { font-size: 16px; }
    .hero-side-card, .hero-scroll { display: none; }
    .number-grid { grid-template-columns: repeat(3, 1fr); }
    .number-grid > div { min-height: 110px; padding: 18px 14px; }
    .number-grid strong { font-size: 31px; }
    .number-grid .number-logo { display: none; }
    .split-intro-grid, .editorial-grid, .system-intro-grid, .image-copy-grid, .why-grid, .range-banner, .faq-layout, .system-data-grid, .contact-layout { grid-template-columns: 1fr; gap: 48px; }
    .section-head { grid-template-columns: 1fr; gap: 20px; }
    .section-head p { max-width: 650px; }
    .category-grid { grid-template-columns: 1fr; }
    .category-card { min-height: 430px; }
    .process-grid { grid-template-columns: repeat(2, 1fr); }
    .why-visual { min-height: 520px; }
    .why-visual img { height: 500px; }
    .stacked-images { min-height: 520px; }
    .stacked-images img:first-child { height: 470px; }
    .range-banner > div:first-child { padding: 0; }
    .range-images { height: 450px; }
    .service-grid { grid-template-columns: 1fr; }
    .cta-inner { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1.1fr 1fr 1fr; gap: 28px; }
    .inner-hero { min-height: 520px; padding-top: 165px; }
    .system-highlight-strip .container { grid-template-columns: repeat(2, 1fr); }
    .system-highlight-strip .container > div { border-bottom: 1px solid rgba(255,255,255,.1); }
    .system-jump-nav { top: 78px; }
    .system-jump-nav .container { gap: 26px; }
    .variant-spec-grid { grid-template-columns: 1fr; }
    .drawing-grid { grid-template-columns: 1fr; }
    .application-name-grid { grid-template-columns: repeat(2, 1fr); }
    .office-grid { grid-template-columns: 1fr; }
    .form-panel, .checklist-panel { padding: 45px 34px; }
}

@media (max-width: 560px) {
    .container { width: min(calc(100% - 28px), var(--container)); }
    .section { padding: 68px 0; }
    h2 { font-size: 39px; }
    p { font-size: 15px; }
    .language-switch { gap: 5px; }
    .header-actions { gap: 9px; }
    .hero-content h1 { font-size: 51px; }
    .hero-content > p { font-size: 15px; }
    .hero-actions { width: 100%; flex-direction: column; }
    .hero-actions .button { width: 100%; }
    .number-grid span { font-size: 9px; }
    .number-grid > div { padding-inline: 10px; }
    .category-card { min-height: 400px; }
    .category-card > div { padding: 26px; }
    .products-grid, .value-grid, .application-grid, .contact-cards { grid-template-columns: 1fr; }
    .footer-contact-grid { grid-template-columns: 1fr; }
    .footer-contact-grid a { min-height: 92px; padding: 21px 18px; border-right: 1px solid rgba(255,255,255,.1); border-bottom: 1px solid rgba(255,255,255,.1); }
    .footer-contact-grid a:last-child { border-bottom: 0; }
    .office-grid article { min-height: 310px; grid-template-columns: 45px 1fr; padding: 30px 24px; }
    .office-grid h3 { font-size: 24px; }
    .product-card-image { height: 240px; }
    .process-grid { grid-template-columns: 1fr; }
    .process-grid article { min-height: 220px; }
    .process-grid article > span { margin-bottom: 45px; }
    .why-visual { min-height: 420px; }
    .why-visual img { width: 92%; height: 400px; }
    .why-visual > span { padding: 18px; font-size: 12px; }
    .cta h2 { font-size: 39px; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .footer-brand { grid-column: 1 / -1; }
    .footer-bottom { align-items: flex-start; flex-direction: column; justify-content: center; gap: 7px; }
    .inner-hero { min-height: 500px; padding-bottom: 55px; }
    .inner-hero h1 { font-size: 52px; }
    .stacked-images { min-height: 430px; }
    .stacked-images img:first-child { width: 90%; height: 390px; }
    .stacked-images img:last-child { height: 210px; border-width: 8px; }
    .range-images { height: 380px; }
    .range-images img:first-child { height: 340px; }
    .range-images img:last-child { height: 200px; border-width: 8px; }
    .service-card { min-height: auto; padding: 30px 26px; }
    .service-card > span { margin-bottom: 35px; }
    .application-grid article { min-height: 360px; }
    .system-hero { min-height: 600px; padding-bottom: 60px; }
    .back-link { margin-bottom: 45px; }
    .system-hero h1 { font-size: 58px; }
    .system-hero-actions, .system-hero-actions .button { width: 100%; }
    .system-highlight-strip .container { width: 100%; }
    .system-highlight-strip .container > div { min-height: 110px; padding: 18px; }
    .system-highlight-strip strong { font-size: 22px; }
    .system-jump-nav .container { width: max-content; margin-left: 14px; gap: 22px; }
    .system-jump-nav a { min-height: 54px; font-size: 11px; }
    #overview, #technical, #variants, #drawings, #form { scroll-margin-top: 132px; }
    .variant-spec-grid article { padding: 28px 24px; }
    .variant-spec-grid h3 { font-size: 28px; }
    .drawing-grid figure > div, .drawing-grid.single figure > div { min-height: 220px; padding: 18px; }
    .application-name-grid { grid-template-columns: 1fr; }
    .application-name-grid article { min-height: 150px; }
    .application-name-grid span { margin-bottom: 38px; }
    .form-row { grid-template-columns: 1fr; }
    .form-panel, .checklist-panel { padding: 38px 24px; }
    .form-panel h2 { font-size: 38px; }
}