:root{--blue: #1a4bd8;--blue-dark: #123a9e;--ink: #1c2333;--muted: #5a6478;--line: #dfe4ef;--bg: #ffffff;--bg2: #f4f6fb}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:Segoe UI,Inter,system-ui,sans-serif;color:var(--ink);background:var(--bg);line-height:1.55;font-size:16px}a{color:var(--blue);text-decoration:none}a:hover{text-decoration:underline}.container{max-width:1080px;margin:0 auto;padding:0 22px}.container--narrow{max-width:800px}.hdr{position:sticky;top:0;z-index:50;background:#fffffff0;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}.hdr__in{display:flex;align-items:center;justify-content:space-between;height:64px}.hdr__logo{display:flex;align-items:center;gap:10px}.hdr__name{font-weight:800;font-size:19px;color:var(--ink);letter-spacing:.02em}.hdr__nav{display:flex;gap:22px;align-items:center;flex-wrap:wrap}.hdr__nav a{color:var(--muted);font-size:14.5px}.hdr__nav a:hover{color:var(--blue);text-decoration:none}.hdr__cta{border:1.5px solid var(--blue);border-radius:8px;padding:7px 14px!important;font-weight:700;color:var(--blue)!important}.hero__chrome{background:linear-gradient(115deg,#0b0f16,#39404d 18%,#e8ecf2 38%,#9aa3b2 52%,#1a1f29,#4a525f,#0d1118);background-size:180% 100%;padding:74px 0}.hero__chrome-in{max-width:1080px;margin:0 auto;padding:34px 40px;background:#0a0d12d1;border-radius:6px;display:flex;align-items:center;justify-content:space-between;gap:30px;flex-wrap:wrap}.hero__brand{display:flex;align-items:center;gap:16px}.hero__brand-name{color:#fff;font-size:30px;font-weight:800;letter-spacing:.02em}.hero__tagline{color:#dfe5ee;font-size:19px}.hero__contacts{display:flex;flex-direction:column;gap:4px}.hero__contacts a{color:#fff;font-size:17px}.hero__lead{padding:60px 22px 8px}.hero__lead h1{font-size:clamp(28px,4.4vw,44px);line-height:1.15;color:var(--blue);margin-bottom:16px}.hero__lead p{color:var(--muted);font-size:18px;max-width:720px;margin-bottom:26px}.hero__actions{display:flex;gap:14px;flex-wrap:wrap}.btn{display:inline-block;background:var(--blue);color:#fff;font-weight:700;padding:13px 28px;border-radius:8px;transition:background .15s,transform .15s}.btn:hover{background:var(--blue-dark);transform:translateY(-2px);text-decoration:none}.btn--ghost{background:transparent;color:var(--blue);border:1.5px solid var(--blue)}.btn--ghost:hover{background:var(--bg2)}.btn--big{padding:16px 32px;font-size:17px}.sec{padding:62px 0;border-top:1px solid var(--line)}.sec:nth-of-type(2n){background:var(--bg2)}.sec h2{color:var(--blue);font-size:clamp(24px,3.4vw,32px);margin-bottom:26px}.sec h3{font-size:17px;margin-bottom:10px;color:var(--ink)}.cols{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:30px}.grid2{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:34px}.col ul,.plain{list-style:none}.col li,.plain li{position:relative;padding:5px 0 5px 20px;color:var(--muted);font-size:15px}.col li:before,.plain li:before{content:"";position:absolute;left:2px;top:13px;width:7px;height:7px;border-radius:2px;background:var(--blue)}.plain li{font-size:16px}.pcb-link{background:var(--blue);color:#fff;padding:54px 0}.pcb-link__in{display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap}.pcb-link h2{color:#fff;margin-bottom:8px;font-size:26px}.pcb-link p{color:#ccd8ff;max-width:480px}.pcb-link .btn{background:#fff;color:var(--blue)}.pcb-link .btn:hover{background:#e9eeff}.ftr{background:#10151f;color:#9aa5b8;padding:46px 0 26px}.ftr__in{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:30px;margin-bottom:28px}.ftr__brand{display:flex;gap:14px;align-items:flex-start}.ftr__name{color:#fff;font-weight:800;font-size:20px}.ftr__tag{font-size:14px;margin-top:4px}.ftr__contacts{display:flex;flex-direction:column;gap:5px}.ftr__contacts a,.ftr__nav a{color:#c3ccdb;font-size:15px}.ftr__contacts a:hover,.ftr__nav a:hover{color:#fff;text-decoration:none}.ftr__nav{display:flex;flex-direction:column;gap:5px}.ftr__copy{border-top:1px solid #232b3a;padding-top:18px;font-size:13px}@media (max-width: 768px){.hdr__nav{display:none}.hero__chrome-in{flex-direction:column;align-items:flex-start}.ftr__in{grid-template-columns:1fr}.sec{padding:44px 0}}.metalcalc{background:var(--bg2)}.mc-sub{color:var(--muted);max-width:680px;margin:-10px 0 28px}.mc-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:26px;align-items:start}.mc-form{background:#fff;border:1px solid var(--line);border-radius:12px;padding:26px}.mc-field{margin-bottom:18px}.mc-field>label{display:block;font-size:14px;color:var(--muted);margin-bottom:7px}.mc-field input[type=number],.mc-field select{width:100%;padding:10px 13px;border:1px solid var(--line);border-radius:8px;font-size:15px;color:var(--ink);background:#fff;outline:none}.mc-field input:focus,.mc-field select:focus{border-color:var(--blue)}.mc-row3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:10px}.mc-field input[type=range]{width:100%;accent-color:var(--blue)}.mc-field label b{color:var(--blue)}.mc-check{display:flex;align-items:center;gap:9px;padding:5px 0;font-size:15px}.mc-check input{accent-color:var(--blue);width:17px;height:17px}.mc-check input[type=number]{width:80px;padding:5px 8px}.mc-unit{color:var(--muted);font-size:13px}.mc-seg{display:grid;grid-auto-flow:column;grid-auto-columns:1fr;gap:5px;background:#eef1f8;border-radius:8px;padding:4px}.mc-seg button{border:none;background:transparent;padding:9px 4px;border-radius:6px;color:var(--muted);font-size:13.5px;cursor:pointer}.mc-seg button.on{background:var(--blue);color:#fff;font-weight:700}.mc-result{background:var(--blue);color:#fff;border-radius:12px;padding:26px;position:sticky;top:84px}.mc-result h3{margin-bottom:16px}.mc-line{display:flex;justify-content:space-between;gap:10px;font-size:13.5px;padding:7px 0;border-bottom:1px dashed rgba(255,255,255,.25);color:#d5deff}.mc-line b{font-family:Consolas,monospace;white-space:nowrap}.mc-total{display:flex;justify-content:space-between;align-items:baseline;margin:16px 0 4px;font-size:15px}.mc-total b{font-size:26px;font-family:Consolas,monospace}.mc-unit-price{color:#d5deff;font-size:14px}.mc-unit-price b{color:#fff;font-family:Consolas,monospace}.mc-cta{display:block;text-align:center;margin-top:18px;background:#fff;color:var(--blue);width:100%}.mc-cta:hover{background:#e9eeff}.mc-result small{display:block;margin-top:10px;color:#b7c4f5;font-size:12.5px}@media (max-width: 900px){.mc-grid{grid-template-columns:1fr}.mc-result{position:static}}.stl-viewer{border:1px solid var(--line);border-radius:10px;overflow:hidden}.stl-viewer canvas{display:block}.stl-error{padding:20px;color:#5a6478;font-size:14px}.stl-error-msg{color:#d93025;font-family:Consolas,monospace;font-size:12.5px;margin:6px 0}