:root {
  --graphite: #15191f;
  --dark: #0b0f14;
  --panel: #20262d;
  --steel: #6f7a86;
  --line: #d8dde3;
  --light: #f2f4f6;
  --white: #fff;
  --blue: #1f5f91;
  --orange: #f28a22;
  --amber: #ffb14a;
  --shadow: 0 24px 70px rgba(12, 15, 19, 0.15);
  --container: min(1240px, calc(100vw - 56px));
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; overflow-x: hidden; }
body { margin: 0; overflow-x: hidden; background: var(--light); color: var(--graphite); font-family: Inter, Arial, sans-serif; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button, input, textarea, select { font: inherit; }
h1, h2, h3, p { margin-top: 0; }
h1 { margin-bottom: 24px; font-size: clamp(44px, 5vw, 76px); line-height: .96; letter-spacing: -.03em; text-transform: uppercase; }
h2 { margin-bottom: 16px; font-size: clamp(32px, 3.6vw, 56px); line-height: 1; letter-spacing: -.025em; text-transform: uppercase; }
h3 { margin-bottom: 12px; font-size: 23px; line-height: 1.15; }
p { color: #63707d; line-height: 1.6; }
.site-header {
  position: sticky; top: 0; z-index: 50;
  display: grid; grid-template-columns: auto 1fr auto auto; gap: 24px; align-items: center;
  min-height: 74px; padding: 0 32px; border-bottom: 1px solid rgba(255,255,255,.12);
  background: rgba(11,15,20,.94); color: white; backdrop-filter: blur(16px);
}
.brand { display: inline-flex; align-items: center; gap: 12px; font-weight: 900; letter-spacing: .02em; }
.brand span { display: grid; width: 44px; height: 44px; place-items: center; background: var(--orange); color: #111; font-weight: 950; }
.nav { display: flex; justify-content: center; gap: 16px; color: rgba(255,255,255,.76); font-size: 13px; }
.nav a { white-space: nowrap; }
.nav a:hover { color: var(--amber); }
.header-cta { padding: 13px 18px; background: var(--orange); color: #111; font-weight: 900; }
.menu-toggle { display: none; width: 46px; height: 46px; border: 1px solid rgba(255,255,255,.2); background: transparent; }
.menu-toggle span { display: block; width: 20px; height: 2px; margin: 5px auto; background: #fff; }
.section, .hero, .site-footer, .trust-strip { width: var(--container); margin-inline: auto; }
.section { padding: 92px 0 0; }
.section-code { display: inline-flex; margin-bottom: 18px; color: var(--orange); font-size: 12px; font-weight: 950; letter-spacing: .14em; text-transform: uppercase; }
.section-head { display: grid; grid-template-columns: minmax(0, 1fr) minmax(280px, 520px); gap: 32px; align-items: end; margin-bottom: 34px; }
.section-head p { margin-bottom: 0; font-size: 18px; }
.section-head.dark h2, .section-head.dark p { color: white; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 10px; min-height: 54px; padding: 0 22px; border: 1px solid currentColor; font-weight: 900; cursor: pointer; transition: transform .18s ease, border-color .18s ease, background .18s ease; }
.button::after { content: "→"; color: currentColor; }
.button:hover { transform: translateY(-2px); }
.button.primary { background: var(--orange); border-color: var(--orange); color: #111; }
.button.secondary { background: transparent; color: white; }
.button.ghost { background: transparent; color: var(--graphite); }
.hero {
  display: grid; grid-template-columns: minmax(0, 55fr) minmax(0, 45fr); gap: 24px; align-items: stretch;
  min-height: min(720px, calc(100vh - 74px)); padding: 26px 0;
}
.hero > * { min-width: 0; }
.hero-copy { display: flex; flex-direction: column; justify-content: center; min-height: 560px; padding: clamp(28px, 2.6vw, 36px); background: var(--dark); color: white; overflow: hidden; }
.hero-copy h1 { max-width: 680px; font-size: clamp(34px, 3.05vw, 48px); line-height: 1.03; overflow-wrap: anywhere; text-wrap: balance; }
.hero-copy p { max-width: 660px; color: rgba(255,255,255,.76); font-size: 19px; }
.hero-note { margin-top: 18px; padding-left: 14px; border-left: 3px solid var(--orange); color: rgba(255,255,255,.7); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 12px; }
.hero-visual { position: relative; min-width: 0; min-height: 560px; overflow: hidden; background: #222; }
.hero-visual img { width: 100%; height: 100%; min-height: 560px; object-fit: cover; filter: saturate(.85) contrast(1.05); }
.tech-badges { position: absolute; left: 18px; right: 18px; bottom: 18px; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
.tech-badges span { min-width: 0; padding: 12px; background: rgba(11,15,20,.86); border-left: 3px solid var(--orange); color: white; font-size: 12px; font-weight: 800; text-transform: uppercase; letter-spacing: .035em; }
.trust-strip { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 10px; border: 1px solid var(--line); background: white; }
.trust-strip article { padding: 18px 20px; border-right: 1px solid var(--line); }
.trust-strip article:last-child { border-right: 0; }
.trust-strip strong { display: block; color: var(--graphite); font-size: 26px; line-height: 1; }
.trust-strip span { display: block; margin-top: 7px; color: var(--steel); font-size: 14px; }
.dark-band { margin-top: 82px; padding: 70px calc((100vw - min(1240px, calc(100vw - 56px))) / 2); background: var(--graphite); color: white; }
.metric-grid { display: grid; grid-template-columns: repeat(5, 1fr); border: 1px solid rgba(255,255,255,.14); }
.metric-grid article { min-height: 180px; padding: 24px; border-right: 1px solid rgba(255,255,255,.14); }
.metric-grid article:last-child { border-right: 0; }
.metric-grid strong { display: block; margin-bottom: 14px; color: var(--amber); font-size: 38px; line-height: 1; }
.metric-grid span { color: rgba(255,255,255,.72); line-height: 1.4; }
.catalog-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.product-card { display: flex; flex-direction: column; min-height: 100%; background: white; border: 1px solid var(--line); transition: transform .18s ease, border-color .18s ease, box-shadow .18s ease; }
.product-card:hover { transform: translateY(-4px); border-color: var(--orange); box-shadow: var(--shadow); }
.product-media { position: relative; height: 190px; overflow: hidden; background: #cfd5db; }
.product-media img { width: 100%; height: 100%; object-fit: cover; filter: saturate(.75) contrast(1.02); }
.product-media::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent, rgba(11,15,20,.36)); }
.tech-visual, .object-visual, .page-visual {
  position: relative; width: 100%; height: 100%; min-height: inherit; overflow: hidden;
  background:
    linear-gradient(90deg, rgba(255,255,255,.06) 1px, transparent 1px) 0 0 / 28px 28px,
    linear-gradient(0deg, rgba(255,255,255,.06) 1px, transparent 1px) 0 0 / 28px 28px,
    linear-gradient(135deg, #232b33, #11161c);
}
.tech-visual::before, .object-visual::before, .page-visual::before {
  content: ""; position: absolute; inset: 22px; border: 1px solid rgba(255,255,255,.22);
}
.tech-visual::after, .object-visual::after, .page-visual::after {
  content: attr(data-label); position: absolute; left: 18px; right: 18px; bottom: 16px;
  color: rgba(255,255,255,.88); font-size: 13px; font-weight: 950; letter-spacing: .08em; text-transform: uppercase;
}
.tech-visual span, .object-visual span, .page-visual span { position: absolute; display: block; background: var(--orange); }
.tech-visual .beam-1 { left: 16%; top: 32%; width: 68%; height: 12px; box-shadow: 0 34px 0 #9aa7b3, 0 68px 0 #d6dde4; }
.tech-visual .beam-2 { left: 18%; top: 24%; width: 12px; height: 80px; box-shadow: 130px 0 0 #9aa7b3, 260px 0 0 #d6dde4; }
.tech-visual .truss-1 { left: 13%; top: 56%; width: 74%; height: 3px; transform: rotate(-14deg); }
.tech-visual .truss-2 { left: 13%; top: 56%; width: 74%; height: 3px; transform: rotate(14deg); background: #d6dde4; }
.tech-visual .plate-1 { left: 16%; top: 28%; width: 78px; height: 54px; background: #d6dde4; box-shadow: 110px 28px 0 #9aa7b3, 220px -4px 0 var(--orange); }
.tech-visual .grid-1 { left: 16%; top: 28%; width: 64%; height: 64px; background: transparent; border-top: 10px solid #d6dde4; border-bottom: 10px solid #9aa7b3; }
.tech-visual .grid-2 { left: 20%; top: 33%; width: 10px; height: 84px; box-shadow: 46px 0 0 var(--orange), 92px 0 0 #d6dde4, 138px 0 0 #9aa7b3, 184px 0 0 var(--orange); }
.product-card h3, .product-card p, .product-card .tags, .product-card ul, .product-card .card-link { margin-left: 20px; margin-right: 20px; }
.product-card h3 { margin-top: 20px; }
.product-card ul { display: grid; gap: 8px; margin-top: 10px; padding: 0; list-style: none; }
.product-card li::before, .check-list li::before { content: ""; display: inline-block; width: 7px; height: 7px; margin-right: 9px; background: var(--orange); }
.tags { display: flex; flex-wrap: wrap; gap: 7px; margin-top: auto; padding-top: 14px; }
.tag { display: inline-flex; padding: 6px 9px; background: #edf1f4; color: #43505c; font-size: 12px; font-weight: 850; text-transform: uppercase; letter-spacing: .04em; }
.card-link { display: inline-flex; align-items: center; justify-content: space-between; margin-top: 18px; padding: 15px 0 20px; border-top: 1px solid var(--line); color: var(--blue); font-weight: 900; }
.card-link::after { content: "→"; color: var(--orange); }
.object-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.object-card { position: relative; min-height: 330px; padding: 22px; overflow: hidden; color: white; background: var(--dark); }
.object-card::after { content: ""; position: absolute; inset: 0; z-index: 0; background: linear-gradient(180deg, rgba(11,15,20,.08) 0%, rgba(11,15,20,.36) 42%, rgba(11,15,20,.9) 100%); }
.object-card img, .object-card .object-visual { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: .74; transition: transform .25s ease, opacity .25s ease; }
.object-card:hover img, .object-card:hover .object-visual { transform: scale(1.03); opacity: .58; }
.object-card-content { position: relative; z-index: 1; display: flex; flex-direction: column; justify-content: flex-end; min-height: 286px; }
.object-card h3 { margin: 0 0 10px; color: white; font-size: 21px; line-height: 1.08; letter-spacing: 0; }
.object-card p { margin: 0 0 10px; color: rgba(255,255,255,.82); font-size: 14px; line-height: 1.45; }
.object-card li { color: rgba(255,255,255,.82); }
.object-card ul { display: grid; gap: 5px; margin: 0; padding: 0; list-style: none; font-size: 13px; line-height: 1.35; }
.orange-line { width: 42px; height: 3px; margin-bottom: 16px; background: var(--orange); }
.process-section { background: var(--dark); color: white; }
.process-intro { display: block; max-width: 900px; margin-bottom: 36px; }
.process-intro h2 { max-width: 780px; margin-bottom: 22px; }
.process-intro p { max-width: 760px; margin: 0; font-size: 18px; }
.process-map { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1px; background: rgba(255,255,255,.16); border: 1px solid rgba(255,255,255,.16); }
.process-step { position: relative; display: flex; flex-direction: column; min-width: 0; min-height: 320px; padding: 24px; background: var(--panel); overflow: hidden; }
.process-step .num { color: var(--orange); font-size: 34px; font-weight: 950; }
.process-step h3 { color: white; overflow-wrap: anywhere; }
.process-step p { color: rgba(255,255,255,.72); overflow-wrap: anywhere; }
.stage-result { margin-top: auto; padding: 13px; border-left: 3px solid var(--orange); background: rgba(255,255,255,.07); color: rgba(255,255,255,.86); }
.stage-owner { display: inline-flex; width: fit-content; max-width: 100%; margin: 14px 0 14px; padding: 6px 8px; background: rgba(242,138,34,.12); color: var(--amber); font-size: 11px; font-weight: 950; letter-spacing: .08em; text-transform: uppercase; }
.quality-section { display: grid; grid-template-columns: .9fr 1.1fr; gap: 34px; align-items: stretch; }
.quality-image img { width: 100%; height: 100%; min-height: 540px; object-fit: cover; }
.check-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; margin: 0; padding: 0; list-style: none; background: var(--line); border: 1px solid var(--line); }
.check-list li { padding: 18px; background: white; font-weight: 800; }
.project-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.project-card { display: grid; grid-template-columns: .9fr 1.1fr; min-height: 360px; border: 1px solid var(--line); background: white; overflow: hidden; transition: transform .18s ease, box-shadow .18s ease; }
.project-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.project-card img { width: 100%; height: 100%; min-height: 360px; object-fit: cover; filter: saturate(.8); }
.project-card .object-visual { min-height: 360px; opacity: 1; }
.project-body { padding: 24px; }
.project-meta { display: flex; flex-wrap: wrap; gap: 7px; margin-bottom: 18px; }
.project-meta span { padding: 6px 8px; background: var(--graphite); color: white; font-size: 12px; font-weight: 850; }
.project-body dl { display: grid; grid-template-columns: 110px 1fr; gap: 8px 14px; margin: 18px 0; }
.project-body dt { color: var(--steel); }
.project-body dd { margin: 0; font-weight: 800; }
.geo-section { background: var(--graphite); color: white; }
.region-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.region-card { padding: 26px; border: 1px solid rgba(255,255,255,.16); background: rgba(255,255,255,.05); }
.region-card h3 { color: white; }
.section .region-card { border-color: var(--line); background: white; color: var(--graphite); }
.section .region-card h3 { color: var(--graphite); }
.section .region-card .city-list span { background: #edf1f4; color: #43505c; }
.city-list { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.city-list span { padding: 7px 9px; background: rgba(255,255,255,.08); color: rgba(255,255,255,.8); }
.logistics-row { display: grid; grid-template-columns: repeat(5, 1fr); gap: 1px; margin-top: 24px; background: rgba(255,255,255,.16); }
.logistics-row span { padding: 18px; background: rgba(255,255,255,.06); color: rgba(255,255,255,.84); font-weight: 800; }
.doc-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.doc-card { min-height: 230px; padding: 22px; border: 1px solid var(--line); background: white; }
.doc-card strong { display: inline-flex; margin-bottom: 18px; padding: 6px 8px; background: var(--graphite); color: white; font-size: 12px; letter-spacing: .08em; text-transform: uppercase; }
.doc-card .card-link { margin-left: 0; margin-right: 0; }
.request-section { display: grid; grid-template-columns: .76fr 1.24fr; gap: 34px; margin-bottom: 70px; padding: 38px; background: var(--graphite); color: white; }
.request-section p { color: rgba(255,255,255,.72); font-size: 18px; }
.request-aside { padding: 24px; background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.14); }
.request-aside ul { display: grid; gap: 12px; margin: 18px 0 0; padding: 0; list-style: none; }
.request-aside li { color: rgba(255,255,255,.82); }
.request-aside li::before { content: ""; display: inline-block; width: 7px; height: 7px; margin-right: 9px; background: var(--orange); }
.request-form { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.request-form label { display: grid; gap: 8px; }
.request-form span, .request-form legend { color: var(--amber); font-size: 12px; font-weight: 900; text-transform: uppercase; letter-spacing: .08em; }
.request-form input, .request-form textarea, .request-form select { width: 100%; min-height: 52px; padding: 0 13px; border: 1px solid rgba(255,255,255,.2); background: rgba(255,255,255,.08); color: white; outline: 0; }
.request-form textarea { padding-top: 12px; }
.request-form fieldset { display: flex; flex-wrap: wrap; gap: 10px; margin: 0; padding: 0; border: 0; }
.request-form fieldset legend { width: 100%; }
.request-form fieldset label { display: inline-flex; align-items: center; gap: 8px; min-height: 42px; padding: 0 12px; border: 1px solid rgba(255,255,255,.2); }
.request-form fieldset input { width: auto; min-height: auto; }
.request-form .full, .request-form .button { grid-column: 1 / -1; }
.page-hero { display: grid; grid-template-columns: minmax(0, 1fr) minmax(340px, 520px); gap: 40px; align-items: stretch; padding: 66px 0 42px; border-bottom: 1px solid var(--line); overflow: hidden; }
.page-hero > div { min-width: 0; }
.page-hero h1 { max-width: 900px; font-size: clamp(38px, 4.35vw, 70px); overflow-wrap: anywhere; }
.page-hero-media { position: relative; min-height: 380px; overflow: hidden; background: var(--graphite); }
.page-hero-media img { width: 100%; height: 100%; object-fit: cover; opacity: .9; filter: saturate(.82) contrast(1.05); }
.spec-panel { padding: 24px; border: 1px solid var(--line); background: #fff; box-shadow: var(--shadow); }
.spec-panel dl { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 18px; margin: 0; }
.spec-panel dt { color: var(--steel); font-size: 12px; font-weight: 900; letter-spacing: .1em; text-transform: uppercase; }
.spec-panel dd { margin: 4px 0 0; font-size: 20px; font-weight: 900; }
.filters { display: flex; flex-wrap: wrap; gap: 8px; margin: 28px 0 34px; }
.filters button { min-height: 42px; padding: 0 14px; border: 1px solid var(--line); background: white; color: var(--graphite); font-weight: 800; cursor: pointer; }
.filters button.is-active, .filters button:hover { border-color: var(--orange); background: var(--orange); color: #111; }
.data-table { display: grid; border: 1px solid var(--line); background: #fff; }
.data-row { display: grid; grid-template-columns: .85fr 1.1fr 1fr .9fr; border-bottom: 1px solid var(--line); }
.data-row:last-child { border-bottom: 0; }
.data-row > span { padding: 18px; border-right: 1px solid var(--line); line-height: 1.45; }
.data-row > span:last-child { border-right: 0; }
.data-head { background: var(--graphite); color: #fff; font-size: 12px; font-weight: 900; letter-spacing: .1em; text-transform: uppercase; }
.info-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.info-grid article { min-height: 190px; padding: 24px; background: #fff; }
.info-grid strong { display: block; margin-bottom: 12px; color: var(--orange); font-size: 13px; letter-spacing: .12em; text-transform: uppercase; }
.mini-cta { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; justify-content: space-between; margin-top: 46px; padding: 26px; background: var(--graphite); color: #fff; }
.mini-cta p { margin: 0; color: rgba(255,255,255,.72); }
.section > .dark-band { width: 100vw; margin-left: calc(50% - 50vw); margin-right: calc(50% - 50vw); }
.site-footer { display: grid; grid-template-columns: 1.2fr repeat(3, 1fr); gap: 32px; padding: 44px 0 60px; border-top: 1px solid var(--line); }
.site-footer .brand span { width: 38px; height: 38px; }
.site-footer p, .site-footer a, .site-footer span { display: block; color: #66717d; line-height: 1.55; margin-bottom: 8px; }
.site-footer h4 { margin: 0 0 14px; }
@media (max-width: 1200px) {
  .nav, .header-cta { display: none; }
  .site-header { grid-template-columns: auto 1fr auto; }
  .menu-toggle { display: block; }
  .nav { position: fixed; inset: 74px 0 auto; display: none; flex-direction: column; padding: 18px 32px; background: var(--dark); }
  .menu-open .nav { display: flex; }
  .section-head, .quality-section, .request-section, .page-hero, .project-card { grid-template-columns: 1fr; max-height: none; }
  .hero-copy, .hero-visual, .hero-visual img { min-height: 520px; }
  .catalog-grid, .object-grid, .process-map, .region-grid, .doc-grid, .metric-grid { grid-template-columns: repeat(2, 1fr); }
  .trust-strip, .logistics-row { grid-template-columns: repeat(2, 1fr); }
  .data-row { grid-template-columns: 1fr; }
  .data-row > span { border-right: 0; border-bottom: 1px solid var(--line); }
  .data-row > span:last-child { border-bottom: 0; }
  .site-footer { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; max-height: none; }
}
@media (max-width: 700px) {
  :root { --container: min(100vw - 28px, 520px); }
  .site-header { padding: 0 14px; }
  .hero { min-height: auto; padding-top: 18px; }
  .hero-copy { padding: 26px; min-height: auto; }
  .hero-visual, .hero-visual img { min-height: 430px; }
  h1 { font-size: clamp(36px, 12vw, 52px); }
  h2 { font-size: clamp(30px, 10vw, 42px); }
  .catalog-grid, .object-grid, .process-map, .project-grid, .region-grid, .doc-grid, .metric-grid, .trust-strip, .logistics-row, .check-list, .request-form, .site-footer, .info-grid { grid-template-columns: 1fr; }
  .tech-badges { grid-template-columns: 1fr; }
  .dark-band { padding-left: 14px; padding-right: 14px; }
  .request-section { padding: 24px; }
}