:root{
    --bg:#EEF3F5;
    --bg-alt:#FFFFFF;
    --ink:#12202B;
    --ink-soft:#4A5C68;
    --blue:#0077B6;
    --blue-deep:#045C8F;
    --teal-light:#CDEBEF;
    --orange:#FF6A1A;
    --line:#B9CBD2;
    --line-soft:#DCE6E9;
    --mono:'IBM Plex Mono', monospace;
    --disp:'Space Grotesk', sans-serif;
    --body:'IBM Plex Sans', sans-serif;
  }
  *{box-sizing:border-box; margin:0; padding:0;}
  html{scroll-behavior:smooth;}
  body{
    background:var(--bg);
    color:var(--ink);
    font-family:var(--body);
    line-height:1.5;
    -webkit-font-smoothing:antialiased;
  }
  a{color:inherit; text-decoration:none;}
  img,svg{display:block; max-width:100%;}
  :focus-visible{outline:2px solid var(--orange); outline-offset:3px;}
  .wrap{max-width:1180px; margin:0 auto; padding:0 32px;}
  h1,h2,h3{font-family:var(--disp); font-weight:600; letter-spacing:-0.01em;}
  .eyebrow{
    font-family:var(--mono); font-size:12px; letter-spacing:0.12em; text-transform:uppercase;
    color:var(--blue-deep); display:flex; align-items:center; gap:8px; margin-bottom:14px;
  }
  .eyebrow::before{content:''; width:18px; height:1px; background:var(--blue-deep);}

  /* ===== HEADER ===== */
  header{
    position:sticky; top:0; z-index:50;
    background:rgba(238,243,245,0.86);
    backdrop-filter:blur(10px);
    border-bottom:1px solid var(--line-soft);
  }
  .nav{display:flex; align-items:center; justify-content:space-between; height:76px;}
  .logo{display:flex; align-items:center; gap:10px; font-family:var(--disp); font-weight:700; font-size:19px;}
  .logo .mark{width:28px; height:28px;}
  .navlinks{display:flex; gap:32px; font-size:14.5px; font-weight:500;}
  .navlinks a{color:var(--ink-soft); transition:color .18s;}
  .navlinks a:hover{color:var(--blue-deep);}
  .nav-cta{
    display:flex; align-items:center; gap:20px;
  }
  .nav-phone{font-family:var(--mono); font-size:14px; color:var(--ink); white-space:nowrap;}
  .btn{
    font-family:var(--body); font-weight:600; font-size:14.5px;
    padding:12px 22px; border-radius:3px; border:1px solid transparent;
    cursor:pointer; transition:transform .15s ease, box-shadow .15s ease, background .15s;
    display:inline-flex; align-items:center; gap:8px;
  }
  .btn-primary{background:var(--orange); color:#fff;}
  .btn-primary:hover{transform:translateY(-1px); box-shadow:0 6px 16px rgba(255,106,26,0.3);}
  .btn-outline{background:transparent; border-color:var(--ink); color:var(--ink);}
  .btn-outline:hover{background:var(--ink); color:#fff;}
  .burger{display:none; flex-direction:column; gap:5px; background:none; border:none; cursor:pointer; padding:6px;}
  .burger span{width:22px; height:2px; background:var(--ink);}

  /* ===== HERO ===== */
  .hero{
    padding:76px 0 40px;
    position:relative;
    overflow:hidden;
  }
  .hero-grid{
    display:grid; grid-template-columns:1.05fr 0.95fr; gap:40px; align-items:center;
  }
  .hero h1{
    font-size:clamp(34px,4.2vw,54px); line-height:1.06; margin-bottom:22px;
  }
  .hero h1 em{font-style:normal; color:var(--blue);}
  .hero p.lead{
    font-size:17px; color:var(--ink-soft); max-width:480px; margin-bottom:32px;
  }
  .hero-actions{display:flex; gap:14px; margin-bottom:44px; flex-wrap:wrap;}
  .hero-stats{
    display:grid; grid-template-columns:repeat(3,1fr); gap:0; border-top:1px solid var(--line);
  }
  .hero-stats div{padding:16px 18px 0 0; border-right:1px solid var(--line);}
  .hero-stats div:last-child{border-right:none;}
  .hero-stats .num{font-family:var(--disp); font-size:26px; font-weight:700; color:var(--blue-deep);}
  .hero-stats .lbl{font-family:var(--mono); font-size:11.5px; color:var(--ink-soft); text-transform:uppercase; letter-spacing:0.04em; margin-top:4px;}

  .blueprint{
    position:relative;
    background:var(--bg-alt);
    border:1px solid var(--line);
    border-radius:4px;
    padding:24px;
  }
  .blueprint::before{
    content:'РИС. 01 — ОБЩИЙ ЧЕРТЁЖ';
    position:absolute; top:12px; left:24px;
    font-family:var(--mono); font-size:10.5px; letter-spacing:0.08em; color:var(--ink-soft);
  }
  .blueprint::after{
    content:'ГОСТ 32587-2013';
    position:absolute; bottom:12px; right:24px;
    font-family:var(--mono); font-size:10.5px; letter-spacing:0.06em; color:var(--line);
  }
  .blueprint svg{margin:20px auto 0; overflow:visible;}
  .dim-line{stroke:var(--blue-deep); stroke-width:1;}
  .dim-text{font-family:var(--mono); font-size:11px; fill:var(--ink);}
  .ext-line{stroke:var(--line); stroke-width:1; stroke-dasharray:2,2;}

  /* ===== SECTION shared ===== */
  section{padding:88px 0;}
  .section-head{max-width:640px; margin-bottom:48px;}
  .section-head h2{font-size:clamp(26px,3vw,36px); line-height:1.15;}
  .section-head p{color:var(--ink-soft); margin-top:14px; font-size:15.5px;}

  /* ===== CATALOG ===== */
  .catalog{background:var(--bg-alt); border-top:1px solid var(--line-soft); border-bottom:1px solid var(--line-soft);}
  .cat-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:1px; background:var(--line-soft); border:1px solid var(--line-soft);}
  .cat-card{
    background:var(--bg-alt); padding:30px 26px; display:flex; flex-direction:column; gap:16px;
    transition:background .18s;
  }
  .cat-card:hover{background:var(--teal-light);}
  .cat-card .icon{height:120px; display:flex; align-items:flex-end; justify-content:center;}
  .cat-card h3{font-size:18px;}
  .cat-card .specs{
    font-family:var(--mono); font-size:12px; color:var(--ink-soft); display:grid; gap:6px; margin-top:auto;
    border-top:1px dashed var(--line); padding-top:14px;
  }
  .cat-card .specs span{color:var(--ink); font-weight:500;}
  .cat-card .row{display:flex; justify-content:space-between;}
  .cat-card .price{font-family:var(--disp); font-weight:700; font-size:16px; color:var(--blue-deep); margin-top:4px;}

  /* ===== CAPABILITIES ===== */
  .cap-grid{display:grid; grid-template-columns:repeat(4,1fr); gap:28px;}
  .cap-item{border-left:2px solid var(--blue); padding-left:18px;}
  .cap-item .num{font-family:var(--disp); font-size:32px; font-weight:700;}
  .cap-item .unit{font-family:var(--mono); font-size:12px; color:var(--blue-deep); margin-left:4px;}
  .cap-item .desc{color:var(--ink-soft); font-size:13.5px; margin-top:8px;}

  .colors-row{display:flex; gap:14px; margin-top:56px; flex-wrap:wrap;}
  .color-chip{
    display:flex; align-items:center; gap:10px; background:var(--bg-alt); border:1px solid var(--line);
    padding:10px 16px; border-radius:30px; font-family:var(--mono); font-size:12.5px;
  }
  .color-chip .dot{width:14px; height:14px; border-radius:50%; border:1px solid var(--line);}

  /* ===== PROCESS ===== */
  .process{background:var(--ink); color:#EEF3F5;}
  .process .section-head p{color:#9FB4BF;}
  .process .eyebrow{color:#7FC7DE;}
  .process .eyebrow::before{background:#7FC7DE;}
  .steps{display:grid; grid-template-columns:repeat(5,1fr); gap:0; position:relative;}
  .steps::before{
    content:''; position:absolute; top:20px; left:0; right:0; height:1px;
    background:linear-gradient(to right, transparent, #3A4B54 6%, #3A4B54 94%, transparent);
  }
  .step{padding-right:20px; position:relative;}
  .step .idx{
    font-family:var(--mono); font-size:13px; width:40px; height:40px; border-radius:50%;
    background:var(--ink); border:1px solid #3A4B54; display:flex; align-items:center; justify-content:center;
    margin-bottom:20px; position:relative; z-index:2; color:#7FC7DE;
  }
  .step h3{font-size:15.5px; font-weight:600; margin-bottom:8px; font-family:var(--body);}
  .step p{font-size:13px; color:#9FB4BF;}

  /* ===== CTA / CONTACT ===== */
  .contact{background:var(--bg-alt); border-top:1px solid var(--line-soft);}
  .contact-grid{display:grid; grid-template-columns:0.9fr 1.1fr; gap:60px;}
  .contact-info h2{font-size:clamp(26px,3vw,34px); margin-bottom:18px;}
  .contact-info p{color:var(--ink-soft); font-size:15px; margin-bottom:28px; max-width:400px;}
  .info-line{display:flex; gap:14px; align-items:baseline; padding:14px 0; border-top:1px solid var(--line-soft); font-size:14.5px;}
  .info-line .k{font-family:var(--mono); font-size:11.5px; color:var(--ink-soft); text-transform:uppercase; width:110px; flex-shrink:0;}

  form{display:grid; gap:16px;}
  .form-row{display:grid; grid-template-columns:1fr 1fr; gap:16px;}
  label{font-family:var(--mono); font-size:11px; text-transform:uppercase; letter-spacing:0.05em; color:var(--ink-soft); display:block; margin-bottom:6px;}
  input, select, textarea{
    width:100%; background:var(--bg); border:1px solid var(--line); border-radius:3px;
    padding:12px 14px; font-family:var(--body); font-size:14.5px; color:var(--ink);
    transition:border-color .15s;
  }
  input:focus, select:focus, textarea:focus{border-color:var(--blue); outline:none;}
  textarea{resize:vertical; min-height:88px;}
  .form-submit{margin-top:6px; display:flex; align-items:center; gap:16px;}
  .form-note{font-size:12px; color:var(--ink-soft);}

  /* ===== FOOTER ===== */
  footer{background:var(--ink); color:#9FB4BF; padding:48px 0 28px;}
  .foot-grid{display:flex; justify-content:space-between; align-items:flex-start; flex-wrap:wrap; gap:32px; padding-bottom:32px; border-bottom:1px solid #3A4B54;}
  .foot-logo{font-family:var(--disp); font-weight:700; font-size:18px; color:#EEF3F5; margin-bottom:10px;}
  .foot-cols{display:flex; gap:56px; flex-wrap:wrap;}
  .foot-col h4{font-family:var(--mono); font-size:11px; text-transform:uppercase; letter-spacing:0.06em; color:#5E7078; margin-bottom:14px;}
  .foot-col a, .foot-col p{display:block; font-size:13.5px; margin-bottom:9px; color:#B7C6CD;}
  .foot-col a:hover{color:#fff;}
  .foot-bottom{display:flex; justify-content:space-between; padding-top:22px; font-size:12px; color:#5E7078; flex-wrap:wrap; gap:10px;}

  /* ===== responsive ===== */
  @media (max-width:920px){
    .navlinks{display:none;}
    .burger{display:flex;}
    .hero-grid{grid-template-columns:1fr;}
    .cat-grid{grid-template-columns:repeat(2,1fr);}
    .cap-grid{grid-template-columns:repeat(2,1fr); row-gap:32px;}
    .steps{grid-template-columns:repeat(1,1fr); row-gap:28px;}
    .steps::before{display:none;}
    .contact-grid{grid-template-columns:1fr;}
    .form-row{grid-template-columns:1fr;}
    .nav-phone{display:none;}
  }
  @media (max-width:560px){
    .wrap{padding:0 20px;}
    .cat-grid{grid-template-columns:1fr;}
    .hero-stats{grid-template-columns:1fr; row-gap:14px;}
    .hero-stats div{border-right:none; border-bottom:1px solid var(--line); padding-bottom:14px;}
  }

  [data-reveal]{opacity:0; transform:translateY(14px); transition:opacity .6s ease, transform .6s ease;}
  [data-reveal].in{opacity:1; transform:translateY(0);}

  /* ===== added for multipage ===== */
  .breadcrumb{
    font-family:var(--mono); font-size:12px; color:var(--ink-soft);
    padding:20px 0 0; display:flex; gap:8px; align-items:center;
  }
  .breadcrumb a{color:var(--blue-deep);}
  .breadcrumb a:hover{text-decoration:underline;}
  .breadcrumb span{color:var(--line);}

  .page-hero{padding:36px 0 60px;}
  .page-hero .eyebrow{margin-top:8px;}
  .page-hero h1{font-size:clamp(30px,4vw,46px); line-height:1.08; max-width:720px;}
  .page-hero p.lead{color:var(--ink-soft); font-size:16.5px; max-width:560px; margin-top:16px;}

  .teaser-head{display:flex; justify-content:space-between; align-items:flex-end; gap:24px; margin-bottom:40px; flex-wrap:wrap;}
  .teaser-head .section-head{margin-bottom:0;}
  .link-arrow{font-family:var(--mono); font-size:13.5px; color:var(--blue-deep); white-space:nowrap; display:inline-flex; align-items:center; gap:6px;}
  .link-arrow:hover{text-decoration:underline;}

  .cat-card-link{display:block; color:inherit;}
  .cat-card .more{
    font-family:var(--mono); font-size:12.5px; color:var(--blue-deep); margin-top:6px;
    display:inline-flex; align-items:center; gap:6px;
  }

  .product-detail{display:grid; grid-template-columns:0.85fr 1.15fr; gap:52px; align-items:start;}
  .product-detail .blueprint{position:sticky; top:96px;}
  .product-info h1{font-size:clamp(28px,3.6vw,40px); margin-bottom:14px;}
  .product-info p.desc{color:var(--ink-soft); font-size:15.5px; max-width:520px; margin-bottom:32px;}
  .spec-table{width:100%; border-collapse:collapse; margin-bottom:32px;}
  .spec-table tr{border-top:1px solid var(--line-soft);}
  .spec-table tr:last-child{border-bottom:1px solid var(--line-soft);}
  .spec-table td{padding:13px 4px; font-size:14.5px;}
  .spec-table td:first-child{font-family:var(--mono); font-size:12px; text-transform:uppercase; color:var(--ink-soft); width:38%;}
  .spec-table td:last-child{font-weight:500;}
  .product-price{
    display:flex; align-items:center; gap:20px; background:var(--bg); border:1px solid var(--line);
    border-radius:4px; padding:20px 24px; margin-bottom:28px; flex-wrap:wrap;
  }
  .product-price .amount{font-family:var(--disp); font-size:26px; font-weight:700; color:var(--blue-deep);}
  .product-price .amount span{font-family:var(--body); font-size:13px; font-weight:400; color:var(--ink-soft); display:block; margin-top:2px;}
  .product-actions{display:flex; gap:14px; flex-wrap:wrap;}

  .related{border-top:1px solid var(--line-soft); margin-top:72px; padding-top:48px;}
  .related h3{font-family:var(--disp); font-size:19px; margin-bottom:24px;}
  .related-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:20px;}
  .related-card{
    display:block; background:var(--bg-alt); border:1px solid var(--line-soft); border-radius:4px; padding:20px;
    transition:border-color .18s, transform .18s;
  }
  .related-card:hover{border-color:var(--blue); transform:translateY(-2px);}
  .related-card .icon{height:70px; display:flex; align-items:flex-end; justify-content:center; margin-bottom:12px;}
  .related-card h4{font-size:15px; margin-bottom:4px;}
  .related-card .vol{font-family:var(--mono); font-size:12px; color:var(--ink-soft);}

  .cta-banner{
    background:var(--ink); color:#EEF3F5; border-radius:6px; padding:52px 48px;
    display:flex; justify-content:space-between; align-items:center; gap:32px; flex-wrap:wrap;
  }
  .cta-banner h2{font-size:clamp(22px,2.6vw,30px); max-width:480px;}
  .cta-banner p{color:#9FB4BF; font-size:14.5px; margin-top:10px; max-width:440px;}

  .full-steps{display:grid; grid-template-columns:repeat(5,1fr); gap:0; position:relative;}
  .capabilities-page .colors-row{margin-top:56px;}

  @media (max-width:920px){
    .product-detail{grid-template-columns:1fr;}
    .product-detail .blueprint{position:static;}
    .related-grid{grid-template-columns:repeat(2,1fr);}
    .full-steps{grid-template-columns:1fr; row-gap:28px;}
  }
  @media (max-width:560px){
    .related-grid{grid-template-columns:1fr;}
    .cta-banner{padding:36px 24px;}
  }