:root{
    --bg:        #ECE7DE;
    --bg-panel:  #F7F4EE;
    --ink:       #201D19;
    --ink-soft:  #57524A;
    --line:      #C9C2B4;
    --accent:    #C1401C;
    --accent-ink:#FFF3EC;
    --steel:     #3F5561;
    --radius:    2px;
  }

  *{ box-sizing:border-box; margin:0; padding:0; }
  html{ scroll-behavior:smooth; }

  body{
    background:var(--bg);
    color:var(--ink);
    font-family:'IBM Plex Sans', sans-serif;
    font-size:16px;
    line-height:1.55;
    -webkit-font-smoothing:antialiased;
  }

  img{ max-width:100%; display:block; }

  .wrap{
    max-width:1160px;
    margin:0 auto;
    padding:0 28px;
  }

  .mono{
    font-family:'IBM Plex Mono', monospace;
    letter-spacing:.02em;
  }

  .eyebrow{
    font-family:'IBM Plex Mono', monospace;
    font-size:12.5px;
    letter-spacing:.14em;
    text-transform:uppercase;
    color:var(--steel);
    display:flex;
    align-items:center;
    gap:10px;
    margin-bottom:18px;
  }
  .eyebrow::before{
    content:"";
    width:22px; height:1px;
    background:var(--steel);
    display:inline-block;
  }

  h1,h2,h3{
    font-family:'Archivo', sans-serif;
    font-weight:900;
    text-transform:uppercase;
    letter-spacing:-0.01em;
    line-height:0.98;
  }

  a{ color:inherit; }

  /* ---------- Buttons ---------- */
  .btn{
    display:inline-flex;
    align-items:center;
    gap:9px;
    font-family:'IBM Plex Mono', monospace;
    font-size:13.5px;
    letter-spacing:.04em;
    text-transform:uppercase;
    text-decoration:none;
    padding:14px 22px;
    border-radius:var(--radius);
    border:1px solid var(--ink);
    transition:background .15s ease, color .15s ease, border-color .15s ease, transform .15s ease;
    white-space:nowrap;
  }
  .btn-solid{
    background:var(--accent);
    border-color:var(--accent);
    color:var(--accent-ink);
  }
  .btn-solid:hover{ transform:translateY(-1px); background:#A8380F; border-color:#A8380F; }
  .btn-ghost{
    background:transparent;
    color:var(--ink);
  }
  .btn-ghost:hover{ background:var(--ink); color:var(--bg-panel); }

  /* ---------- Nav ---------- */
  header.site{
    position:sticky; top:0; z-index:50;
    background:rgba(236,231,222,.92);
    backdrop-filter:blur(6px);
    border-bottom:1px solid var(--line);
  }
  nav{
    display:flex;
    align-items:center;
    justify-content:space-between;
    padding:18px 0;
  }
  .logo{
    font-family:'Archivo', sans-serif;
    font-weight:900;
    font-size:19px;
    letter-spacing:.02em;
    text-decoration:none;
    color:var(--ink);
    display:flex;
    align-items:baseline;
    gap:8px;
  }
  .logo span{
    font-family:'IBM Plex Mono', monospace;
    font-weight:400;
    font-size:11px;
    color:var(--accent);
    letter-spacing:.1em;
  }
  .nav-links{
    display:flex;
    align-items:center;
    gap:30px;
    list-style:none;
  }
  .nav-links a{
    font-family:'IBM Plex Mono', monospace;
    font-size:13px;
    text-transform:uppercase;
    letter-spacing:.05em;
    text-decoration:none;
    color:var(--ink-soft);
    transition:color .15s ease;
  }
  .nav-links a:hover{ color:var(--accent); }
  .nav-cta{ display:flex; align-items:center; gap:22px; }

  .lang-switch{
    display:flex;
    border:1px solid var(--ink);
    border-radius:var(--radius);
    overflow:hidden;
  }
  .lang-btn{
    font-family:'IBM Plex Mono', monospace;
    font-size:12px;
    letter-spacing:.05em;
    padding:8px 11px;
    background:transparent;
    border:none;
    cursor:pointer;
    color:var(--ink-soft);
    transition:background .15s ease, color .15s ease;
  }
  .lang-btn.active{ background:var(--ink); color:var(--bg-panel); }
  .lang-btn:not(.active):hover{ color:var(--ink); }

  .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); display:block; }

  /* ---------- Hero ---------- */
  .hero{
    padding:76px 0 90px;
    display:grid;
    grid-template-columns:1.05fr 0.95fr;
    gap:56px;
    align-items:center;
  }
  .hero h1{
    font-size:clamp(40px, 6vw, 70px);
    margin:6px 0 26px;
  }
  .hero h1 em{
    font-style:normal;
    color:var(--accent);
  }
  .hero p.lead{
    max-width:56ch;
    color:var(--ink-soft);
    font-size:16.5px;
    margin-bottom:16px;
  }
  .hero p.lead:last-of-type{ margin-bottom:34px; }
  .hero-ctas{ display:flex; flex-wrap:wrap; gap:14px; }

  /* technical drawing */
  .blueprint{
    background:var(--bg-panel);
    border:1px solid var(--line);
    border-radius:var(--radius);
    padding:34px 26px 26px;
  }
  .blueprint svg{ width:100%; height:auto; display:block; }
  .blueprint-photo{ padding:10px 10px 22px; }
  .blueprint-photo img{ width:100%; height:auto; object-fit:cover; }
  .blueprint-caption{
    margin-top:16px;
    display:flex;
    justify-content:space-between;
    font-family:'IBM Plex Mono', monospace;
    font-size:11.5px;
    color:var(--ink-soft);
    letter-spacing:.03em;
  }

  section{ padding:88px 0; border-top:1px solid var(--line); }

  .section-head{
    max-width:640px;
    margin-bottom:52px;
  }
  .section-head h2{ font-size:clamp(30px,4vw,44px); margin-top:4px; }
  .section-head p{ color:var(--ink-soft); margin-top:16px; max-width:52ch; }

  /* ---------- Swatches (signature element) ---------- */
  .swatch-row{
    display:grid;
    grid-template-columns:repeat(5, 1fr);
    gap:16px;
  }
  .swatch{
    background:var(--bg-panel);
    border:1px solid var(--line);
    border-radius:var(--radius);
    padding:0 0 14px;
    cursor:pointer;
    transition:transform .18s ease, box-shadow .18s ease, border-color .18s ease;
    text-align:left;
    overflow:hidden;
  }
  .swatch .chip{
    display:block;
    width:100%;
    aspect-ratio:1/1;
    background-size:cover;
    background-position:center;
    border-bottom:1px solid var(--line);
  }
  .swatch .name{
    display:block;
    font-family:'IBM Plex Mono', monospace;
    font-size:12.5px;
    text-transform:uppercase;
    letter-spacing:.03em;
    margin:12px 14px 0;
  }
  .swatch .code{
    display:block;
    font-family:'IBM Plex Mono', monospace;
    font-size:10.5px;
    color:var(--ink-soft);
    margin:3px 14px 0;
  }
  .swatch:hover, .swatch.active{
    transform:translateY(-4px);
    box-shadow:0 10px 22px rgba(32,29,25,.14);
    border-color:var(--ink);
  }
  .swatch-note{
    margin-top:22px;
    font-family:'IBM Plex Mono', monospace;
    font-size:12px;
    color:var(--ink-soft);
  }

  @media (max-width: 880px){
    .swatch-row{ grid-template-columns:repeat(3, 1fr); }
  }
  @media (max-width: 540px){
    .swatch-row{ grid-template-columns:repeat(2, 1fr); }
  }

  /* ---------- Lightbox (zoom de color) ---------- */
  .color-lightbox{
    display:none;
    position:fixed;
    inset:0;
    z-index:999;
    background:rgba(20,18,15,.92);
    align-items:center;
    justify-content:center;
    padding:40px;
  }
  .color-lightbox.open{ display:flex; }
  .color-lightbox figure{
    margin:0;
    max-width:min(90vw, 720px);
    text-align:center;
  }
  .color-lightbox img{
    display:block;
    width:100%;
    height:auto;
    max-height:78vh;
    object-fit:contain;
    border-radius:2px;
    box-shadow:0 20px 60px rgba(0,0,0,.4);
  }
  .color-lightbox figcaption{
    margin-top:16px;
    color:#F2F1ED;
    font-size:13px;
    text-transform:uppercase;
    letter-spacing:.06em;
  }
  .color-lightbox-close{
    position:absolute;
    top:24px;
    right:28px;
    background:none;
    border:none;
    color:#F2F1ED;
    font-size:36px;
    line-height:1;
    cursor:pointer;
  }

  /* ---------- Ranges ---------- */
  .range-grid{
    display:grid;
    grid-template-columns:repeat(3, 1fr);
    gap:24px;
  }
  .range-card{
    background:var(--bg-panel);
    border:1px solid var(--line);
    border-radius:var(--radius);
    padding:30px 26px;
    display:flex;
    flex-direction:column;
    gap:18px;
  }
  .range-index{
    font-family:'IBM Plex Mono', monospace;
    font-size:12px;
    color:var(--accent);
  }
  .range-card svg{ width:100%; height:120px; }
  .range-card h3{
    font-size:21px;
    letter-spacing:0;
  }
  .range-card p{ color:var(--ink-soft); font-size:14.5px; }
  .range-specs{
    margin-top:auto;
    padding-top:14px;
    border-top:1px dashed var(--line);
    font-family:'IBM Plex Mono', monospace;
    font-size:12px;
    color:var(--ink-soft);
    display:flex;
    flex-direction:column;
    gap:4px;
  }

  /* ---------- Edge comparison ---------- */
  .edge-compare{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:24px;
    margin-top:24px;
  }
  .edge-card{
    background:var(--bg-panel);
    border:1px solid var(--line);
    border-radius:var(--radius);
    overflow:hidden;
  }
  .edge-card img{ width:100%; height:auto; display:block; background:#fff; }
  .edge-label{ padding:20px 22px 24px; }
  .edge-label p{ color:var(--ink-soft); font-size:14px; margin-top:8px; }

  /* ---------- Process ---------- */
  .process{
    display:grid;
    grid-template-columns:repeat(4, 1fr);
    gap:0;
    border:1px solid var(--line);
    border-radius:var(--radius);
    overflow:hidden;
  }
  .step{
    padding:30px 24px;
    background:var(--bg-panel);
    border-left:1px solid var(--line);
  }
  .step:first-child{ border-left:none; }
  .step .num{
    font-family:'IBM Plex Mono', monospace;
    color:var(--accent);
    font-size:13px;
    margin-bottom:14px;
    display:block;
  }
  .step h3{ font-size:16.5px; letter-spacing:0; margin-bottom:8px; }
  .step p{ font-size:13.5px; color:var(--ink-soft); }

  /* ---------- Gallery ---------- */
  .gallery-grid{
    display:grid;
    grid-template-columns:repeat(3, 1fr);
    gap:18px;
  }
  .ph{
    aspect-ratio:4/3;
    border:1px dashed var(--line);
    border-radius:var(--radius);
    background:
      repeating-linear-gradient(135deg, transparent, transparent 10px, rgba(63,85,97,.05) 10px, rgba(63,85,97,.05) 11px),
      var(--bg-panel);
    display:flex;
    align-items:center;
    justify-content:center;
    text-align:center;
    padding:20px;
  }
  .gallery-grid img{
    aspect-ratio:4/3;
    object-fit:cover;
    border:1px solid var(--line);
  }
  .ph span{
    font-family:'IBM Plex Mono', monospace;
    font-size:11.5px;
    color:var(--ink-soft);
    line-height:1.5;
  }

  /* ---------- About ---------- */
  .about{
    display:grid;
    grid-template-columns:0.9fr 1.1fr;
    gap:56px;
    align-items:start;
  }
  .about p{ color:var(--ink-soft); margin-bottom:16px; max-width:56ch; }
  .about-facts{
    display:flex;
    flex-direction:column;
    gap:0;
    border-top:1px solid var(--line);
  }
  .fact{
    display:flex;
    justify-content:space-between;
    padding:16px 0;
    border-bottom:1px solid var(--line);
    font-family:'IBM Plex Mono', monospace;
    font-size:13px;
  }
  .fact span:first-child{ color:var(--ink-soft); }

  /* ---------- Contact / Footer ---------- */
  footer{
    background:var(--ink);
    color:var(--bg-panel);
    padding:80px 0 30px;
  }
  footer .eyebrow{ color:#9BB0BA; }
  footer .eyebrow::before{ background:#9BB0BA; }
  footer h2{
    font-size:clamp(32px,5vw,52px);
    color:#fff;
    margin-bottom:30px;
    max-width:14ch;
  }
  .contact-grid{
    display:grid;
    grid-template-columns:1.2fr 1fr;
    gap:40px;
    padding-bottom:56px;
    border-bottom:1px solid rgba(247,244,238,.18);
  }
  .contact-list{ list-style:none; display:flex; flex-direction:column; gap:14px; }
  .contact-list a{
    text-decoration:none;
    font-family:'IBM Plex Mono', monospace;
    font-size:14.5px;
    color:var(--bg-panel);
    border-bottom:1px solid rgba(247,244,238,.25);
    padding-bottom:4px;
    display:inline-block;
    transition:border-color .15s ease, color .15s ease;
  }
  .contact-list a:hover{ color:var(--accent); border-color:var(--accent); }
  .footer-bottom{
    padding-top:26px;
    display:flex;
    justify-content:space-between;
    flex-wrap:wrap;
    gap:10px;
    font-family:'IBM Plex Mono', monospace;
    font-size:11.5px;
    color:#9B968C;
  }

  /* ---------- Blog ---------- */
  .page-header{
    padding:70px 0 20px;
  }
  .page-header h1{
    font-size:clamp(38px,5.5vw,60px);
    margin-top:6px;
  }
  .page-header p{
    color:var(--ink-soft);
    max-width:52ch;
    margin-top:16px;
    font-size:16px;
  }
  .blog-grid{
    display:grid;
    grid-template-columns:repeat(3, 1fr);
    gap:24px;
  }
  .blog-card{
    display:block;
    text-decoration:none;
    color:var(--ink);
    background:var(--bg-panel);
    border:1px solid var(--line);
    border-radius:var(--radius);
    overflow:hidden;
    transition:transform .18s ease, box-shadow .18s ease;
  }
  .blog-card:hover{
    transform:translateY(-4px);
    box-shadow:0 10px 22px rgba(32,29,25,.14);
  }
  .blog-card .blog-thumb{
    aspect-ratio:4/3;
    background:
      repeating-linear-gradient(135deg, transparent, transparent 10px, rgba(63,85,97,.05) 10px, rgba(63,85,97,.05) 11px),
      var(--bg-panel);
    border-bottom:1px solid var(--line);
    display:flex; align-items:center; justify-content:center;
  }
  .blog-card .blog-thumb img{ width:100%; height:100%; object-fit:cover; }
  .blog-card .blog-body{ padding:22px 24px 26px; }
  .blog-card .blog-date{
    font-family:'IBM Plex Mono', monospace;
    font-size:11.5px;
    color:var(--accent);
    text-transform:uppercase;
    letter-spacing:.05em;
  }
  .blog-card h3{
    font-size:19px;
    letter-spacing:0;
    text-transform:none;
    margin:10px 0 10px;
    line-height:1.15;
  }
  .blog-card p{ color:var(--ink-soft); font-size:14px; }
  .blog-card .read-more{
    display:inline-block;
    margin-top:14px;
    font-family:'IBM Plex Mono', monospace;
    font-size:12.5px;
    text-transform:uppercase;
    letter-spacing:.04em;
    color:var(--ink);
  }
  @media (max-width: 880px){
    .blog-grid{ grid-template-columns:1fr 1fr; }
  }
  @media (max-width: 540px){
    .blog-grid{ grid-template-columns:1fr; }
  }

  /* ---------- Article ---------- */
  .article-header{ padding:70px 0 40px; max-width:760px; }
  .article-header h1{ font-size:clamp(32px,5vw,50px); margin-top:10px; }
  .article-meta{
    font-family:'IBM Plex Mono', monospace;
    font-size:12px;
    color:var(--ink-soft);
    margin-top:16px;
  }
  .article-body{
    max-width:720px;
    padding-bottom:80px;
    font-size:16.5px;
    line-height:1.7;
  }
  .article-body p{ margin-bottom:20px; color:var(--ink); }
  .article-body h2{
    text-transform:none;
    font-size:26px;
    letter-spacing:0;
    margin:40px 0 16px;
  }
  .article-body h3{
    text-transform:none;
    font-size:19px;
    letter-spacing:0;
    margin:28px 0 12px;
  }
  .article-body ul{ margin:0 0 20px 20px; }
  .article-body li{ margin-bottom:8px; }
  .article-back{
    display:inline-flex;
    align-items:center;
    gap:8px;
    font-family:'IBM Plex Mono', monospace;
    font-size:12.5px;
    text-transform:uppercase;
    letter-spacing:.04em;
    text-decoration:none;
    color:var(--ink-soft);
    margin-bottom:26px;
  }
  .article-back:hover{ color:var(--accent); }

  @media (max-width: 880px){
    .burger{ display:flex; }
    .hero{ grid-template-columns:1fr; padding:50px 0 60px; }
    .range-grid{ grid-template-columns:1fr; }
    .process{ grid-template-columns:1fr; }
    .step{ border-left:none; border-top:1px solid var(--line); }
    .step:first-child{ border-top:none; }
    .gallery-grid{ grid-template-columns:1fr 1fr; }
    .about{ grid-template-columns:1fr; }
    .contact-grid{ grid-template-columns:1fr; }
    section{ padding:60px 0; }
  }
  @media (max-width: 540px){
    .gallery-grid{ grid-template-columns:1fr; }
    .hero-ctas{ flex-direction:column; align-items:stretch; }
  }

  @media (prefers-reduced-motion: reduce){
    *{ transition:none !important; scroll-behavior:auto !important; }
  }