/* ============================================================
   chuangwei-en v2 — "Engineering Drawing Set" design system
   概念：零件目录 × 工程图纸。冷图纸底、制图墨线、接触线铜。
   铜色 = CT 铜接触线（产品的核心材料）；Mono = 型号/标准号等真数据。
   TYPE: Barlow Semi Condensed (display, signage) / IBM Plex Sans (body)
         / IBM Plex Mono (data only: models, standards, spec values)
   PALETTE: paper #F2F3EF · ink #21262C · copper #B4551D · steel #66727E
            line #D9DCD4 · panel #24282E
   ============================================================ */

:root {
    --paper: #F2F3EF;
    --paper-deep: #E9EBE4;
    --ink: #21262C;
    --copper: #B4551D;
    --copper-deep: #93431A;
    --steel: #66727E;
    --line: #D9DCD4;
    --line-dark: #3A4046;
    --panel: #24282E;
    --panel-soft: #2C3138;
    --text: #262B31;
    --text-soft: #5C6570;
    --on-panel: #C3C9CE;
    --on-panel-dim: #8A939B;
    --font-display: 'Oswald', 'Arial Narrow', 'Segoe UI', sans-serif;
    --font-body: 'IBM Plex Sans', -apple-system, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'IBM Plex Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    --wrap: 1200px;
}

@font-face {
    font-family: 'Barlow Semi Condensed';
    src: url('/template/chuangwei-en/fonts/barlow-semi-condensed-latin-600-normal.woff2') format('woff2');
    font-weight: 600; font-style: normal; font-display: swap;
}
@font-face {
    font-family: 'Barlow Semi Condensed';
    src: url('/template/chuangwei-en/fonts/barlow-semi-condensed-latin-700-normal.woff2') format('woff2');
    font-weight: 700; font-style: normal; font-display: swap;
}
@font-face {
    font-family: 'IBM Plex Sans';
    src: url('/template/chuangwei-en/fonts/ibm-plex-sans-latin-400-normal.woff2') format('woff2');
    font-weight: 400; font-style: normal; font-display: swap;
}
@font-face {
    font-family: 'IBM Plex Sans';
    src: url('/template/chuangwei-en/fonts/ibm-plex-sans-latin-500-normal.woff2') format('woff2');
    font-weight: 500; font-style: normal; font-display: swap;
}
@font-face {
    font-family: 'IBM Plex Sans';
    src: url('/template/chuangwei-en/fonts/ibm-plex-sans-latin-600-normal.woff2') format('woff2');
    font-weight: 600; font-style: normal; font-display: swap;
}
@font-face {
    font-family: 'IBM Plex Mono';
    src: url('/template/chuangwei-en/fonts/ibm-plex-mono-latin-400-normal.woff2') format('woff2');
    font-weight: 400; font-style: normal; font-display: swap;
}
@font-face {
    font-family: 'IBM Plex Mono';
    src: url('/template/chuangwei-en/fonts/ibm-plex-mono-latin-500-normal.woff2') format('woff2');
    font-weight: 500; font-style: normal; font-display: swap;
}

/* ---------- Reset ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
    font-family: var(--font-body);
    color: var(--text); background: var(--paper);
    line-height: 1.7; font-size: 16.5px;
    -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--copper); text-decoration: none; }
a:hover { color: var(--copper-deep); }
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
.mono { font-family: var(--font-mono); font-feature-settings: "tnum"; }

h1, h2, h3, h4 {
    font-family: var(--font-display);
    color: var(--ink); line-height: 1.12;
    letter-spacing: .01em; font-weight: 700;
}

/* ---------- Top utility strip ---------- */
.topbar {
    background: var(--panel); color: var(--on-panel-dim);
    font-family: var(--font-mono); font-size: 12px; letter-spacing: .04em;
}
.topbar-inner {
    display: flex; justify-content: space-between; gap: 16px;
    padding: 7px 24px; max-width: var(--wrap); margin: 0 auto;
}
.topbar .tick { color: var(--copper); }

/* ---------- Header ---------- */
.site-header {
    position: sticky; top: 0; z-index: 100;
    background: var(--paper);
    border-bottom: 1px solid var(--ink);
}
.header-inner { display: flex; align-items: center; gap: 36px; height: 70px; }
.logo { display: flex; align-items: center; }
.logo img { height: 38px; width: auto; }
.main-nav { display: flex; gap: 26px; flex: 1; }
.main-nav a {
    font-family: var(--font-display); font-weight: 600; font-size: 16.5px;
    letter-spacing: .045em; text-transform: uppercase;
    color: var(--ink); padding: 6px 0; position: relative;
}
.main-nav a::after {
    content: ""; position: absolute; left: 0; right: 100%;
    bottom: 0; height: 2px; background: var(--copper);
    transition: right .18s ease;
}
.main-nav a:hover::after, .main-nav a.active::after { right: 0; }
.header-actions { display: flex; align-items: center; gap: 16px; }
.lang-switch {
    font-family: var(--font-mono); font-size: 13px; color: var(--steel);
    border: 1px solid var(--line); padding: 5px 12px;
}
.lang-switch:hover { color: var(--copper); border-color: var(--copper); }
.nav-toggle { display: none; background: none; border: 0; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--ink); margin: 5px 0; }

/* ---------- Buttons ---------- */
.btn {
    display: inline-block;
    font-family: var(--font-display); font-weight: 600; font-size: 16px;
    letter-spacing: .05em; text-transform: uppercase;
    padding: 12px 26px; border: 1px solid transparent;
    transition: background .15s ease, color .15s ease, border-color .15s ease;
    white-space: nowrap; cursor: pointer;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--copper); color: #fff; }
.btn-primary:hover { background: var(--copper-deep); color: #fff; }
.btn-ghost { border-color: var(--line); color: var(--ink); background: transparent; }
.btn-ghost:hover { border-color: var(--ink); color: var(--ink); }
.btn-light { background: var(--paper); color: var(--ink); }
.btn-light:hover { background: #fff; color: var(--ink); }
.btn-outline-light { border-color: var(--line-dark); color: var(--on-panel); }
.btn-outline-light:hover { border-color: var(--paper); color: #fff; }
.btn-whatsapp { background: #1FA855; color: #fff; }
.btn-whatsapp:hover { background: #178A45; color: #fff; }
.btn-telegram { background: #229ED9; color: #fff; }
.btn-telegram:hover { background: #1B82B4; color: #fff; }
.hero .btn-ghost { border-color: #4A5058; color: var(--on-panel); }
.hero .btn-ghost:hover { border-color: var(--paper); color: #fff; }

/* ---------- Hero (drawing cover sheet) ---------- */
.hero { background: var(--panel); color: var(--on-panel); overflow: hidden; }
.hero-home { position: relative; }
.hero-grid {
    display: grid; grid-template-columns: 1.05fr .95fr;
    gap: 48px; align-items: center;
    padding-top: 84px; padding-bottom: 72px;
    position: relative; z-index: 1;
}
.eyebrow {
    font-family: var(--font-mono); font-size: 12.5px; font-weight: 500;
    letter-spacing: .14em; text-transform: uppercase;
    color: var(--copper); margin-bottom: 22px;
}
.eyebrow::before { content: "— "; }
.hero h1 {
    color: #fff; font-size: clamp(38px, 4.6vw, 60px);
    text-transform: uppercase; letter-spacing: .012em;
    line-height: 1.04; margin-bottom: 20px;
    text-wrap: balance;
}
.hero-sub { font-size: 17.5px; color: var(--on-panel); max-width: 54ch; margin-bottom: 30px; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-media { position: relative; }
.hero-media img {
    width: 100%; border: 1px solid var(--line-dark);
    background: #fff; padding: 14px;
}
/* blueprint grid backdrop */
.hero-home::before {
    content: ""; position: absolute; inset: 0; z-index: 0;
    background-image:
        linear-gradient(var(--panel-soft) 1px, transparent 1px),
        linear-gradient(90deg, var(--panel-soft) 1px, transparent 1px);
    background-size: 56px 56px;
    opacity: .35;
    mask-image: linear-gradient(115deg, transparent 55%, #000 95%);
    -webkit-mask-image: linear-gradient(115deg, transparent 55%, #000 95%);
}

/* title-block strip (图签) */
.titleblock {
    position: relative; z-index: 1;
    border-top: 1px solid var(--line-dark);
    display: grid; grid-template-columns: repeat(4, 1fr);
}
.tb-cell { padding: 16px 24px 20px; border-left: 1px solid var(--line-dark); }
.tb-cell:first-child { border-left: 0; padding-left: 0; }
.tb-label {
    display: block; font-family: var(--font-mono); font-size: 11px;
    letter-spacing: .12em; text-transform: uppercase;
    color: var(--on-panel-dim); margin-bottom: 4px;
}
.tb-value { font-family: var(--font-mono); font-size: 14.5px; color: #EDEFF0; letter-spacing: .01em; }
.tb-value .sep { color: var(--copper); }

/* catenary schematic */
.catenary { width: 100%; height: auto; display: block; }
.catenary .stroke {
    fill: none; stroke: var(--copper); stroke-width: 2.4;
    stroke-linecap: round; stroke-linejoin: round;
}
.catenary .stroke-thin { stroke-width: 1.5; opacity: .8; }
.catenary .stroke-steel { stroke: #77828C; stroke-width: 1.5; }
.catenary .node { fill: var(--copper); stroke: none; }
.catenary .dim {
    font-family: var(--font-mono); font-size: 13px; letter-spacing: .08em;
    fill: var(--on-panel-dim); stroke: none;
}
@media (prefers-reduced-motion: no-preference) {
    .catenary .draw {
        stroke-dasharray: 1; stroke-dashoffset: 1;
        animation: catdraw 1.5s cubic-bezier(.5, 0, .2, 1) forwards;
    }
    .catenary .draw.d2 { animation-delay: .25s; }
    .catenary .draw.d3 { animation-delay: .5s; }
    .catenary .draw.d4 { animation-delay: .75s; }
    .catenary .node { opacity: 0; animation: catnode .4s ease 1.4s forwards; }
}
@keyframes catdraw { to { stroke-dashoffset: 0; } }
@keyframes catnode { to { opacity: 1; } }

/* ---------- Callout section headers ---------- */
.section { padding: 72px 0; }
.section-tight { padding: 40px 0 64px; }
.section-alt { background: var(--paper-deep); }
.callout {
    display: flex; align-items: baseline; gap: 18px;
    border-top: 2px solid var(--ink);
    padding-top: 16px; margin-bottom: 40px;
}
.callout-no {
    font-family: var(--font-mono); font-size: 14px; font-weight: 500;
    color: var(--copper); letter-spacing: .06em;
}
.section-title {
    font-size: clamp(26px, 3vw, 34px); text-transform: uppercase;
    letter-spacing: .015em;
}
.callout-tag {
    margin-left: auto; font-family: var(--font-mono); font-size: 12.5px;
    color: var(--steel); letter-spacing: .06em; white-space: nowrap;
}
.section-more { text-align: center; margin-top: 40px; }

/* ---------- Catalogue index rows ---------- */
.cat-grid { display: grid; grid-template-columns: 1fr 1fr; column-gap: 56px; }
.cat-card {
    display: grid; grid-template-columns: auto 1fr auto;
    align-items: baseline; column-gap: 18px;
    padding: 20px 4px; border-top: 1px solid var(--line);
    color: var(--ink); position: relative;
    transition: background .15s ease;
}
.cat-grid .cat-card:nth-last-child(-n+2) { border-bottom: 1px solid var(--line); }
.cat-card:hover { background: #fff; color: var(--ink); }
.cat-index {
    font-family: var(--font-mono); font-size: 13px; font-weight: 500;
    color: var(--copper); letter-spacing: .04em; min-width: 86px;
}
.cat-card h3 {
    font-size: 19px; font-weight: 600; text-transform: uppercase;
    letter-spacing: .03em;
}
.cat-card p {
    grid-column: 2; font-size: 14px; color: var(--text-soft);
    margin-top: 4px; max-width: 46ch;
}
.cat-arrow {
    grid-column: 3; grid-row: 1; align-self: center;
    font-family: var(--font-body); color: var(--steel); font-size: 18px;
    transition: transform .18s ease, color .18s ease;
}
.cat-card:hover .cat-arrow { transform: translateX(5px); color: var(--copper); }

/* ---------- Product grid ---------- */
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.product-card {
    display: flex; flex-direction: column;
    background: #fff; border: 1px solid var(--line);
    position: relative; overflow: hidden;
    transition: border-color .18s ease;
}
.product-card::before, .product-card::after {
    content: ""; position: absolute; width: 12px; height: 12px;
    border: 0 solid var(--copper); opacity: 0; z-index: 1;
    transition: opacity .18s ease;
}
.product-card::before { top: 6px; left: 6px; border-top-width: 2px; border-left-width: 2px; }
.product-card::after { bottom: 6px; right: 6px; border-bottom-width: 2px; border-right-width: 2px; }
.product-card:hover { border-color: var(--ink); }
.product-card:hover::before, .product-card:hover::after { opacity: 1; }
.product-media { aspect-ratio: 4/3; background: #fff; border-bottom: 1px solid var(--line); }
.product-media img { width: 100%; height: 100%; object-fit: cover; }
.product-info { padding: 16px 18px 18px; }
.product-info h2, .product-info h3 {
    font-size: 18.5px; font-weight: 600; letter-spacing: .01em;
    margin-bottom: 6px; line-height: 1.22;
}
.product-card:hover h2, .product-card:hover h3 { color: var(--copper); }
.product-info p { font-size: 14px; color: var(--text-soft); }

/* ---------- Breadcrumb / page head ---------- */
.breadcrumb-row { padding: 18px 24px 0; }
.breadcrumb {
    font-family: var(--font-mono); font-size: 13px; color: var(--steel);
    display: flex; flex-wrap: wrap; gap: 6px; letter-spacing: .02em;
}
.breadcrumb a { color: var(--steel); }
.breadcrumb a:hover { color: var(--copper); }
.page-title {
    font-size: clamp(30px, 3.6vw, 42px); text-transform: uppercase;
    letter-spacing: .015em; margin-bottom: 12px;
}
.page-desc { color: var(--text-soft); max-width: 70ch; margin-bottom: 28px; font-size: 17px; }

/* ---------- Subcat index tabs ---------- */
.subcat-tabs {
    display: flex; flex-wrap: wrap; gap: 0;
    border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
    margin-bottom: 32px;
}
.subcat-tabs a {
    font-family: var(--font-display); font-weight: 600; font-size: 15px;
    letter-spacing: .04em; text-transform: uppercase;
    color: var(--steel); padding: 10px 18px;
    border-right: 1px solid var(--line);
}
.subcat-tabs a:first-child { padding-left: 0; }
.subcat-tabs a:hover { color: var(--copper); }

/* ---------- Pager ---------- */
.pager { margin-top: 40px; text-align: center; }
.pager a, .pager span {
    display: inline-block; padding: 6px 14px; margin: 0 3px;
    border: 1px solid var(--line); font-family: var(--font-mono);
    font-size: 13.5px; color: var(--ink); background: transparent;
}
.pager a:hover { border-color: var(--ink); }
.pager .current, .pager span.current { background: var(--ink); color: var(--paper); border-color: var(--ink); }

/* ---------- Spec / BOM table ---------- */
.spec-table { width: 100%; border-collapse: collapse; font-size: 15px; }
.spec-table th, .spec-table td {
    padding: 10px 14px; text-align: left; vertical-align: top;
    border-bottom: 1px solid var(--line);
}
.spec-table th {
    font-family: var(--font-body); font-size: 12.5px; font-weight: 600;
    text-transform: uppercase; letter-spacing: .06em;
    color: var(--steel); width: 42%;
}
.spec-table td.mono { font-size: 14px; }
.spec-table tr:first-child th, .spec-table tr:first-child td { border-top: 2px solid var(--ink); }

/* ---------- Product detail ---------- */
.product-detail { padding-bottom: 64px; }
.pd-header { padding: 20px 0 26px; }
.pd-title {
    font-size: clamp(28px, 3.2vw, 38px); text-transform: uppercase;
    letter-spacing: .012em; margin-bottom: 10px; max-width: 30em;
}
.pd-subtitle { color: var(--copper); font-size: 14px; font-weight: 500; letter-spacing: .02em; }
.pd-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 44px; margin-bottom: 52px; }
.pd-media {
    background: #fff; border: 1px solid var(--line);
    padding: 18px; position: relative;
}
.pd-media::before, .pd-media::after {
    content: ""; position: absolute; width: 14px; height: 14px;
    border: 0 solid var(--copper);
}
.pd-media::before { top: -1px; left: -1px; border-top-width: 2px; border-left-width: 2px; }
.pd-media::after { bottom: -1px; right: -1px; border-bottom-width: 2px; border-right-width: 2px; }
.pd-media img { width: 100%; }
.pd-img-note { font-size: 12px; color: var(--steel); margin-top: 12px; }
.pd-spec-title {
    font-size: 21px; text-transform: uppercase; letter-spacing: .03em;
    margin-bottom: 14px;
}
.pd-cta { display: flex; gap: 12px; margin-top: 24px; flex-wrap: wrap; }
.pd-cta .btn { padding: 11px 20px; font-size: 15px; }
.pd-body { max-width: 76ch; margin-bottom: 52px; }
.pd-body p { margin-bottom: 14px; }
.pd-body h2 {
    font-size: 24px; text-transform: uppercase; letter-spacing: .02em;
    margin: 34px 0 12px;
}
.pd-body h3 { font-size: 18px; margin: 24px 0 8px; }
.pd-body ul, .pd-body ol { margin: 0 0 14px 22px; }
.pd-body img { border: 1px solid var(--line); background: #fff; padding: 8px; margin: 8px 0; }
.pd-body table { border-collapse: collapse; width: 100%; font-size: 14.5px; margin: 12px 0 18px; }
.pd-body table th, .pd-body table td { border: 1px solid var(--line); padding: 8px 12px; text-align: left; }
.faq h3 { color: var(--ink); font-size: 17.5px; margin: 22px 0 6px; }
.faq p { color: var(--text-soft); }

/* ---------- Performance / Applications ---------- */
.pd-perf, .pd-scene { margin-bottom: 52px; }
.perf-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.pd-perf .perf-item { margin-bottom: 0; }
.pd-perf .perf-item + .perf-item { margin-top: 0; }
.pd-perf .perf-item .spec-table { margin-top: 6px; }
.perf-item { background: #fff; border: 1px solid var(--line); padding: 22px; }
.perf-item h3 {
    font-size: 17px; text-transform: uppercase; letter-spacing: .035em;
    margin-bottom: 10px; color: var(--ink);
}
.perf-item h3 i { color: var(--copper); margin-right: 4px; }
.perf-item p { font-size: 14.5px; color: var(--text-soft); }
.scene-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.pd-app-card { background: #fff; border: 1px solid var(--line); padding: 20px; }
.pd-app-card .pd-app-icon { color: var(--copper); font-size: 20px; margin-bottom: 12px; }
.pd-app-card h2 { font-size: 16.5px; text-transform: uppercase; letter-spacing: .03em; margin-bottom: 8px; }
.pd-app-card p { font-size: 13.5px; color: var(--text-soft); }

/* ---------- Document list (solutions) ---------- */
.doc-list { border-top: 1px solid var(--line); }
.doc-row {
    display: grid; grid-template-columns: 120px 1fr auto;
    gap: 24px; align-items: center;
    padding: 22px 4px; border-bottom: 1px solid var(--line);
    color: var(--ink); transition: background .15s ease;
}
.doc-row:hover { background: #fff; color: var(--ink); }
.doc-thumb { width: 120px; aspect-ratio: 4/3; object-fit: cover; border: 1px solid var(--line); background: #fff; }
.doc-row h2, .doc-row h3 {
    font-size: 20px; font-weight: 600; letter-spacing: .01em; margin-bottom: 4px;
}
.doc-row:hover h2, .doc-row:hover h3 { color: var(--copper); }
.doc-row p { font-size: 14px; color: var(--text-soft); max-width: 72ch; }
.doc-arrow { color: var(--steel); font-size: 18px; transition: transform .18s ease, color .18s ease; }
.doc-row:hover .doc-arrow { transform: translateX(5px); color: var(--copper); }

/* ---------- CTA band ---------- */
.cta-band { background: var(--panel); color: var(--on-panel); padding: 56px 0; border-top: 2px solid var(--copper); }
.cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 28px; flex-wrap: wrap; }
.cta-band h2 { color: #fff; font-size: clamp(24px, 2.6vw, 32px); text-transform: uppercase; letter-spacing: .02em; }
.cta-actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* ---------- RFQ sticky bar ---------- */
.rfq-bar {
    position: sticky; bottom: 0; z-index: 90;
    background: var(--panel); border-top: 2px solid var(--copper);
    padding: 10px 0;
}
.rfq-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.rfq-text {
    color: var(--on-panel); font-family: var(--font-display); font-weight: 600;
    font-size: 16px; letter-spacing: .04em; text-transform: uppercase;
}
.rfq-actions { display: flex; gap: 10px; }
.rfq-actions .btn { padding: 8px 16px; font-size: 14px; }

/* ---------- Footer (title block) ---------- */
.site-footer { background: var(--panel); color: var(--on-panel); border-top: 1px solid var(--line-dark); }
.footer-grid {
    display: grid; grid-template-columns: 1.3fr 1fr 1fr 1.3fr;
    padding: 56px 24px 44px; gap: 0;
}
.footer-brand { padding-right: 40px; }
.footer-brand img { height: 36px; width: auto; background: #fff; padding: 5px 10px; margin-bottom: 18px; }
.footer-brand p { font-size: 14px; max-width: 36ch; color: var(--on-panel-dim); }
.footer-col { border-left: 1px solid var(--line-dark); padding: 0 28px; }
.footer-col h2 {
    font-family: var(--font-mono); font-size: 11.5px; font-weight: 500;
    letter-spacing: .14em; text-transform: uppercase;
    color: var(--on-panel-dim); margin-bottom: 16px;
}
.footer-col a {
    display: block; color: var(--on-panel); font-size: 14.5px; padding: 4px 0;
    font-family: var(--font-display); font-weight: 600; letter-spacing: .03em;
}
.footer-col a:hover { color: #fff; }
.footer-col p { font-size: 14px; margin-bottom: 10px; color: var(--on-panel); }
.footer-col p a { display: inline; font-family: var(--font-mono); font-weight: 400; font-size: 13.5px; letter-spacing: 0; }
.footer-bottom {
    border-top: 1px solid var(--line-dark);
    display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
    padding-top: 18px; padding-bottom: 26px;
    font-size: 13px; color: var(--on-panel-dim);
}
.footer-bottom .mono { font-size: 12px; letter-spacing: .06em; }

/* ---------- 404 ---------- */
.nf-wrap { max-width: 560px; margin: 0 auto; padding: 110px 24px; text-align: left; }
.nf-code {
    font-family: var(--font-mono); font-size: 15px; color: var(--steel);
    letter-spacing: .14em; margin-bottom: 14px;
}
.nf-wrap h1 { font-size: 44px; text-transform: uppercase; margin-bottom: 14px; }
.nf-wrap p { color: var(--text-soft); margin-bottom: 26px; max-width: 44ch; }

/* ---------- Prose pages ---------- */
.page-body { max-width: 920px; }
.page-content { font-size: 16.5px; }
.page-content h2 {
    font-size: 25px; text-transform: uppercase; letter-spacing: .02em;
    margin: 34px 0 12px;
}
.page-content p { margin-bottom: 14px; max-width: 76ch; }
.page-content ul, .page-content ol { margin: 0 0 14px 22px; }
.page-content img { border: 1px solid var(--line); background: #fff; padding: 8px; margin: 10px 0; }
.page-content table { border-collapse: collapse; width: 100%; font-size: 14.5px; margin: 12px 0 18px; }
.page-content table th, .page-content table td { border: 1px solid var(--line); padding: 8px 12px; text-align: left; }

/* ---------- Focus / a11y ---------- */
:focus-visible { outline: 2px solid var(--copper); outline-offset: 2px; }
.skip-link {
    position: absolute; left: -9999px; top: 0; z-index: 10000;
    background: var(--ink); color: #fff; padding: 10px 18px; font-weight: 600;
}
.skip-link:focus { left: 0; }

/* ---------- Variants ---------- */
.titleblock.tb-5 { grid-template-columns: repeat(5, 1fr); }
.hero-compact .hero-grid { padding-top: 56px; padding-bottom: 48px; }
.hero-compact h1 { font-size: clamp(30px, 3.6vw, 46px); }
.doc-body { min-width: 0; }
.pd-perf .section-title, .pd-scene .section-title { margin-bottom: 26px; }

/* category intro (sort:def1) long-form content */
.sort-def { margin-top: 20px; }
.sort-def h2 {
    font-size: 23px; text-transform: uppercase; letter-spacing: .02em;
    margin: 30px 0 12px;
}
.sort-def ul {
    margin: 0 0 16px; padding-left: 0; list-style: none;
    columns: 2; column-gap: 44px;
}
.sort-def ul li {
    break-inside: avoid; -webkit-column-break-inside: avoid;
    font-size: 15px; color: var(--text-soft); line-height: 1.65;
    padding: 10px 0 10px 22px; position: relative;
    border-bottom: 1px solid var(--line);
}
.sort-def ul li::before {
    content: ""; position: absolute; left: 0; top: 19px;
    width: 10px; height: 10px; border: 0 solid var(--copper);
    border-top-width: 2px; border-left-width: 2px;
}
.sort-def ul li strong { color: var(--ink); font-weight: 600; }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
    .titleblock.tb-5 { grid-template-columns: repeat(2, 1fr); }
    .cat-grid { grid-template-columns: 1fr; column-gap: 0; }
    .cat-grid .cat-card:nth-last-child(-n+2) { border-bottom: 0; }
    .cat-grid .cat-card:last-child { border-bottom: 1px solid var(--line); }
    .scene-grid { grid-template-columns: repeat(2, 1fr); }
    .titleblock { grid-template-columns: repeat(2, 1fr); }
    .tb-cell:nth-child(odd) { border-left: 0; padding-left: 0; }
    .tb-cell { border-top: 1px solid var(--line-dark); }
    .titleblock .tb-cell:nth-child(-n+2) { border-top: 0; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .footer-col { border-left: 0; padding: 0; }
    .footer-brand { grid-column: 1 / -1; padding: 0 0 32px; border-bottom: 1px solid var(--line-dark); margin-bottom: 32px; }
    .footer-col { padding: 0; margin-bottom: 8px; }
}
@media (max-width: 768px) {
    body { font-size: 16px; }
    .topbar-inner { justify-content: center; }
    .topbar .tb-right { display: none; }
    .header-inner { height: 60px; gap: 14px; }
    .main-nav {
        display: none; position: absolute; top: 60px; left: 0; right: 0;
        background: var(--panel); flex-direction: column; gap: 0;
        padding: 8px 20px 16px; border-bottom: 2px solid var(--copper);
    }
    .main-nav a { color: var(--on-panel); padding: 11px 0; border-bottom: 1px solid var(--line-dark); }
    .main-nav a::after { display: none; }
    .main-nav a:hover, .main-nav a.active { color: #fff; }
    .main-nav.open { display: flex; }
    .nav-toggle { display: block; }
    .btn-quote { display: none; }
    .hero-grid { grid-template-columns: 1fr; gap: 36px; padding-top: 52px; padding-bottom: 52px; }
    .hero h1 { font-size: clamp(30px, 8.4vw, 38px); }
    .hero-sub { font-size: 16px; }
    .hero-media { max-width: 520px; }
    .section { padding: 52px 0; }
    .section-tight { padding: 28px 0 48px; }
    .page-title { font-size: 27px; }
    .cat-card { grid-template-columns: auto 1fr auto; }
    .product-grid { grid-template-columns: 1fr; }
    .pd-grid { grid-template-columns: 1fr; gap: 28px; }
    .perf-grid { grid-template-columns: 1fr; }
    .scene-grid { grid-template-columns: 1fr; }
    .sort-def ul { columns: 1; }
    .doc-row { grid-template-columns: 84px 1fr; }
    .doc-thumb { width: 84px; }
    .doc-arrow { display: none; }
    .cta-inner { flex-direction: column; align-items: flex-start; }
    .rfq-text { display: none; }
    .rfq-inner { justify-content: center; }
    .footer-grid { grid-template-columns: 1fr; padding: 40px 24px 28px; }
    .footer-bottom { flex-direction: column; gap: 6px; }
    .pd-cta .btn { flex: 1; text-align: center; padding-left: 10px; padding-right: 10px; }
}

/* ==== RU: cyrillic + display font additions (fonts self-hosted at /ru/fonts/) ==== */
@font-face{font-family:'Oswald';src:url('/ru/fonts/oswald-cyrillic-500-normal.woff2') format('woff2');font-weight:500;font-style:normal;font-display:swap;unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116;}
@font-face{font-family:'Oswald';src:url('/ru/fonts/oswald-cyrillic-600-normal.woff2') format('woff2');font-weight:600;font-style:normal;font-display:swap;unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116;}
@font-face{font-family:'Oswald';src:url('/ru/fonts/oswald-cyrillic-700-normal.woff2') format('woff2');font-weight:700;font-style:normal;font-display:swap;unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116;}
@font-face{font-family:'Oswald';src:url('/ru/fonts/oswald-latin-500-normal.woff2') format('woff2');font-weight:500;font-style:normal;font-display:swap;}
@font-face{font-family:'Oswald';src:url('/ru/fonts/oswald-latin-600-normal.woff2') format('woff2');font-weight:600;font-style:normal;font-display:swap;}
@font-face{font-family:'Oswald';src:url('/ru/fonts/oswald-latin-700-normal.woff2') format('woff2');font-weight:700;font-style:normal;font-display:swap;}
@font-face{font-family:'IBM Plex Sans';src:url('/ru/fonts/ibm-plex-sans-cyrillic-400-normal.woff2') format('woff2');font-weight:400;font-style:normal;font-display:swap;unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116;}
@font-face{font-family:'IBM Plex Sans';src:url('/ru/fonts/ibm-plex-sans-cyrillic-500-normal.woff2') format('woff2');font-weight:500;font-style:normal;font-display:swap;unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116;}
@font-face{font-family:'IBM Plex Sans';src:url('/ru/fonts/ibm-plex-sans-cyrillic-600-normal.woff2') format('woff2');font-weight:600;font-style:normal;font-display:swap;unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116;}
@font-face{font-family:'IBM Plex Mono';src:url('/ru/fonts/ibm-plex-mono-cyrillic-400-normal.woff2') format('woff2');font-weight:400;font-style:normal;font-display:swap;unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116;}
@font-face{font-family:'IBM Plex Mono';src:url('/ru/fonts/ibm-plex-mono-cyrillic-500-normal.woff2') format('woff2');font-weight:500;font-style:normal;font-display:swap;unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116;}
body{letter-spacing:0;}