:root{
    --navy:#0474B5;
    --blue:#1A98D5;
    --blue-bright:#1DAAE2;
    --cyan:#31C5F4;
    --text-blue:#0570A0;
    --ink:#1C2B33;
    --ink-dim:#5A6B75;
    --paper:#F7F9FB;
    --panel:#EDF3F7;
    --line:#D7E3EC;
    --white:#FFFFFF;
  }

  *{margin:0;padding:0;box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    background:var(--paper);
    color:var(--ink);
    font-family:'IBM Plex Sans',sans-serif;
    line-height:1.65;
    -webkit-font-smoothing:antialiased;
  }
  h1,h2,h3{
    font-family:'Archivo',sans-serif;
    line-height:1.1;
    color:var(--ink);
  }
  a{color:inherit;text-decoration:none;}
  img{display:block;max-width:100%;}
  .mono{font-family:'IBM Plex Mono',monospace;}
  :focus-visible{outline:2px solid var(--navy);outline-offset:3px;}

  .wrap{max-width:1180px;margin:0 auto;padding:0 32px;}

  /* ---------- NAV ---------- */
  nav{
    position:fixed;top:0;left:0;right:0;z-index:100;
    background:rgba(247,249,251,0.92);
    backdrop-filter:blur(8px);
    border-bottom:1px solid var(--line);
  }
  nav .wrap{display:flex;align-items:center;justify-content:space-between;height:84px;}
  .logo-img{height:46px;width:auto;}
  .nav-links{display:flex;align-items:center;gap:34px;font-size:0.95rem;font-weight:500;}
  .nav-links a:not(.btn){position:relative;padding:4px 0;color:var(--ink);}
  .nav-links a:not(.btn)::after{
    content:'';position:absolute;bottom:0;left:0;width:0;height:2px;background:var(--navy);
    transition:width 0.25s ease;
  }
  .nav-links a:not(.btn):hover::after{width:100%;}
  .nav-toggle{display:none;background:none;border:none;font-size:1.6rem;cursor:pointer;color:var(--ink);}
  .lang-switch{
    font-family:'IBM Plex Mono';font-size:0.78rem;letter-spacing:0.06em;
    display:flex;align-items:center;gap:6px;color:var(--ink-dim);
  }
  .lang-switch a{color:var(--ink-dim);padding:2px 0;}
  .lang-switch a.active{color:var(--navy);font-weight:600;}
  .lang-switch a:hover{color:var(--navy);}

  @media(max-width:760px){
    .nav-links{
      position:fixed;top:84px;left:0;right:0;flex-direction:column;align-items:stretch;gap:0;
      background:var(--white);border-bottom:1px solid var(--line);
      transform:translateY(-120%);transition:transform 0.3s ease;padding:8px 0;
    }
    .nav-links.open{transform:translateY(0);}
    .nav-links a{padding:16px 32px;border-bottom:1px solid var(--line);}
    .nav-links a.btn{margin:14px 32px;text-align:center;}
    .nav-toggle{display:block;}
    .lang-switch{justify-content:center;padding:14px 32px 20px;}
    .lang-switch a{padding:2px 4px;border-bottom:none;}
  }

  .btn{
    font-family:'IBM Plex Sans';font-weight:600;font-size:0.92rem;
    padding:13px 24px;border-radius:2px;display:inline-block;cursor:pointer;
    border:1px solid transparent;transition:transform 0.18s ease, background 0.18s ease, color 0.18s ease;
  }
  .btn-solid{background:var(--navy);color:var(--white);}
  .btn-solid:hover{background:var(--text-blue);transform:translateY(-2px);}
  .btn-ghost{border-color:var(--ink);color:var(--ink);}
  .btn-ghost:hover{border-color:var(--navy);color:var(--navy);transform:translateY(-2px);}

  /* ---------- HERO ---------- */
  header.hero{
    padding:156px 0 100px;
    position:relative;
    overflow:hidden;
    background:
      linear-gradient(var(--line) 1px, transparent 1px) 0 0/48px 48px,
      linear-gradient(90deg, var(--line) 1px, transparent 1px) 0 0/48px 48px,
      var(--paper);
    background-color:var(--paper);
  }
  header.hero::before{
    content:'';position:absolute;inset:0;
    background:linear-gradient(180deg, rgba(247,249,251,0) 0%, var(--paper) 88%);
    pointer-events:none;
  }
  .hero-inner{position:relative;z-index:1;}
  .eyebrow{
    font-family:'IBM Plex Mono';font-size:0.72rem;color:var(--text-blue);
    letter-spacing:0.16em;margin-bottom:22px;display:flex;align-items:center;gap:10px;
  }
  .eyebrow::before{content:'';width:22px;height:2px;background:var(--navy);}
  .hero h1{
    font-size:clamp(2.1rem,4.2vw,3.4rem);font-weight:800;max-width:15ch;
  }
  .hero h1 span{color:var(--navy);}
  .hero p.lead{
    margin-top:24px;max-width:56ch;color:var(--ink-dim);font-size:1.08rem;
  }
  .hero-actions{margin-top:36px;display:flex;gap:16px;flex-wrap:wrap;}

  /* technical drawing signature */
  .drawing-card{
    margin-top:72px;background:var(--white);border:1px solid var(--line);
    padding:34px 30px 26px;position:relative;
  }
  .drawing-head{
    display:flex;justify-content:space-between;align-items:baseline;margin-bottom:18px;
    font-family:'IBM Plex Mono';font-size:0.7rem;color:var(--ink-dim);letter-spacing:0.08em;
  }
  .drawing-head strong{color:var(--navy);}

  /* ---------- SECTION SHELL ---------- */
  section{padding:100px 0;border-top:1px solid var(--line);}
  .section-head{margin-bottom:52px;max-width:60ch;}
  .section-tag{
    font-family:'IBM Plex Mono';font-size:0.72rem;color:var(--text-blue);
    letter-spacing:0.16em;display:block;margin-bottom:14px;
  }
  .section-head h2{font-size:clamp(1.7rem,2.8vw,2.3rem);}
  .section-head p{margin-top:14px;color:var(--ink-dim);}

  .reveal{opacity:0;transform:translateY(22px);transition:opacity 0.7s ease, transform 0.7s ease;}
  .reveal.is-visible{opacity:1;transform:translateY(0);}

  /* ---------- SERVICES ---------- */
  .services-grid{
    display:grid;grid-template-columns:1fr 1fr;gap:1px;
    background:var(--line);border:1px solid var(--line);
  }
  .service-card{background:var(--white);padding:36px 34px;}
  .service-top{display:flex;align-items:center;gap:16px;margin-bottom:16px;}
  .service-num{
    font-family:'IBM Plex Mono';font-size:0.82rem;color:var(--white);
    background:var(--navy);width:34px;height:34px;border-radius:50%;
    display:flex;align-items:center;justify-content:center;flex-shrink:0;
  }
  .service-card h3{font-size:1.28rem;}
  .service-card p{color:var(--ink-dim);font-size:0.97rem;}

  @media(max-width:800px){
    .services-grid{grid-template-columns:1fr;}
  }

  /* ---------- CONTACT ---------- */
  #contact{background:var(--panel);}
  .contact-grid{display:grid;grid-template-columns:1fr 1.15fr;gap:56px;align-items:start;}

  .titleblock{
    background:var(--white);border:1px solid var(--line);
    font-family:'IBM Plex Mono';font-size:0.82rem;
  }
  .titleblock-row{display:flex;border-top:1px solid var(--line);}
  .titleblock-row:first-child{border-top:none;}
  .titleblock-row .label{
    width:130px;flex-shrink:0;padding:14px 16px;color:var(--ink-dim);
    background:var(--panel);border-right:1px solid var(--line);font-size:0.7rem;letter-spacing:0.06em;
  }
  .titleblock-row .value{padding:14px 16px;color:var(--ink);}
  .titleblock-row .value a:hover{color:var(--navy);}

  form.quote{background:var(--white);border:1px solid var(--line);padding:32px;}
  form.quote h3{font-size:1.2rem;margin-bottom:6px;}
  form.quote .hint{color:var(--ink-dim);font-size:0.88rem;margin-bottom:22px;}
  .field{margin-bottom:18px;}
  .field label{
    display:block;font-family:'IBM Plex Mono';font-size:0.68rem;color:var(--ink-dim);
    letter-spacing:0.08em;margin-bottom:8px;
  }
  .field input, .field select, .field textarea{
    width:100%;border:1px solid var(--line);background:var(--paper);
    padding:12px 14px;font-family:'IBM Plex Sans';font-size:0.94rem;color:var(--ink);
    border-radius:2px;
  }
  .field textarea{resize:vertical;min-height:96px;}
  .field input:focus, .field select:focus, .field textarea:focus{
    outline:none;border-color:var(--navy);box-shadow:0 0 0 3px rgba(4,116,181,0.12);
  }
  .field-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
  @media(max-width:900px){
    .contact-grid{grid-template-columns:1fr;}
  }
  @media(max-width:520px){
    .field-row{grid-template-columns:1fr;}
  }

  /* ---------- FOOTER ---------- */
  footer{padding:36px 0;border-top:1px solid var(--line);}
  footer .wrap{
    display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;
  }
  footer .foot-left{display:flex;align-items:center;gap:12px;}
  footer .logo-img{height:30px;}
  footer .fine{font-family:'IBM Plex Mono';font-size:0.7rem;color:var(--ink-dim);}

  /* ---------- SERVICE PAGE ---------- */
  .breadcrumb{
    padding:156px 0 0;
  }
  .breadcrumb a{
    font-family:'IBM Plex Mono';font-size:0.78rem;color:var(--ink-dim);
    display:inline-flex;align-items:center;gap:8px;
  }
  .breadcrumb a:hover{color:var(--navy);}

  .service-hero{padding:28px 0 70px;border-top:none;}
  .service-badge{
    display:inline-flex;align-items:center;gap:12px;margin-bottom:24px;
  }
  .service-badge .num{
    font-family:'IBM Plex Mono';font-size:0.9rem;color:var(--white);
    width:38px;height:38px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  }
  .service-badge .label{
    font-family:'IBM Plex Mono';font-size:0.72rem;color:var(--ink-dim);letter-spacing:0.16em;
  }
  .service-hero h1{font-size:clamp(2rem,3.6vw,3rem);max-width:18ch;}
  .service-tagline{
    font-family:'Archivo';font-weight:600;font-size:1.15rem;color:var(--text-blue);
    margin-top:14px;
  }
  .service-hero .lead{margin-top:22px;max-width:62ch;color:var(--ink-dim);font-size:1.05rem;}
  .service-hero .lead + .lead{margin-top:14px;}

  .includes{background:var(--white);}
  .includes h2{font-size:1.5rem;margin-bottom:26px;margin-top:44px;}
  .includes h2:first-child{margin-top:0;}
  .includes p + p{margin-top:14px;}
  .includes-list{
    display:grid;grid-template-columns:1fr 1fr;gap:0;
    border:1px solid var(--line);
  }
  .includes-list li{
    list-style:none;padding:16px 20px;border-bottom:1px solid var(--line);
    border-right:1px solid var(--line);font-size:0.96rem;display:flex;gap:12px;align-items:flex-start;
  }
  .includes-list li::before{
    content:'';width:7px;height:7px;border-radius:50%;background:var(--navy);
    margin-top:8px;flex-shrink:0;
  }
  .includes-list li:nth-child(2n){border-right:none;}
  @media(max-width:700px){
    .includes-list{grid-template-columns:1fr;}
    .includes-list li{border-right:none;}
  }

  .closing-note{
    border-left:3px solid var(--navy);background:var(--panel);
    padding:22px 26px;margin-top:44px;font-size:1.02rem;color:var(--ink);max-width:70ch;
  }

  .service-cta{background:var(--panel);text-align:left;}
  .service-cta h2{font-size:1.5rem;margin-bottom:22px;max-width:32ch;}

  .service-nav{
    display:flex;justify-content:space-between;padding:36px 0;border-top:1px solid var(--line);
    font-family:'IBM Plex Mono';font-size:0.82rem;gap:20px;flex-wrap:wrap;
  }
  .service-nav a{color:var(--ink-dim);}
  .service-nav a:hover{color:var(--navy);}
  .service-nav .next{text-align:right;margin-left:auto;}

  .card-link{
    display:inline-flex;align-items:center;gap:6px;margin-top:16px;
    font-family:'IBM Plex Mono';font-size:0.78rem;color:var(--navy);font-weight:500;
  }
  .card-link:hover{color:var(--text-blue);}

  /* ---------- MOBILE SIMPLIFICATION OF TECHNICAL DRAWING ---------- */
  .drawing-legend{
    display:none;
    margin-top:18px;
    grid-template-columns:1fr 1fr;
    gap:10px 16px;
    font-family:'IBM Plex Mono';
    font-size:0.72rem;
    color:var(--ink-dim);
  }
  .drawing-legend li{list-style:none;display:flex;align-items:center;gap:8px;}
  .drawing-legend .dot{width:9px;height:9px;border-radius:50%;flex-shrink:0;}

  @media(max-width:700px){
    .drawing-card svg .callout-label,
    .drawing-card svg .dim-label{display:none;}
    .drawing-legend{display:grid;}
  }

  /* ---------- EXPERIENCE / STATS ---------- */
  .stats-strip{
    display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
    background:var(--line);border:1px solid var(--line);margin-top:48px;
  }
  .stat-block{background:var(--white);padding:26px 22px;text-align:left;}
  .stat-number{
    font-family:'Archivo';font-weight:800;font-size:2.1rem;color:var(--navy);line-height:1;
  }
  .stat-label{
    margin-top:10px;font-size:0.88rem;color:var(--ink-dim);
  }
  @media(max-width:800px){
    .stats-strip{grid-template-columns:1fr 1fr;}
  }

  .typology-grid{
    display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:28px;
  }
  .typology-tag{
    background:var(--panel);border:1px solid var(--line);padding:20px 18px;
    font-family:'Archivo';font-weight:600;font-size:0.98rem;color:var(--ink);
  }
  @media(max-width:800px){
    .typology-grid{grid-template-columns:1fr 1fr;}
  }
  @media(max-width:480px){
    .typology-grid{grid-template-columns:1fr;}
  }

  /* ---------- FORM: honeypot + note ---------- */
  .hp-field{position:absolute;left:-9999px;top:-9999px;}
  .form-note{
    margin-top:16px;font-size:0.8rem;color:var(--ink-dim);
  }
  .form-note a{color:var(--text-blue);text-decoration:underline;}

  /* ---------- FOOTER legal links ---------- */
  .foot-links{
    font-family:'IBM Plex Mono';font-size:0.7rem;color:var(--ink-dim);
    display:flex;gap:16px;
  }
  .foot-links a:hover{color:var(--navy);}
  footer .wrap{row-gap:10px;}