:root{
    --ink:#1c1c1e;
    --steel:#3a3f44;
    --steel-light:#6b7178;
    --paper:#f3f2ee;
    --paper-dim:#e9e7e1;
    --white:#ffffff;
    --red:#c81e2d;
    --red-dark:#8f1420;
    --amber:#e8801a;
    --line:#d8d5cd;
    --radius:2px;
    --maxw:1180px;
  }

  *{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:'Inter',sans-serif;
    color:var(--ink);
    background:var(--paper);
    -webkit-font-smoothing:antialiased;
  }
  h1,h2,h3,h4{
    font-family:'Barlow Condensed',sans-serif;
    font-weight:700;
    line-height:1.05;
    margin:0;
    letter-spacing:0.2px;
  }
  p{margin:0 0 1em 0;}
  a{color:inherit;text-decoration:none;}
  img{max-width:100%;display:block;}
  .wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px;}
  .hazard-rule{
    height:6px;
    background:repeating-linear-gradient(135deg,var(--red) 0 14px,var(--ink) 14px 28px);
  }
  section{padding:88px 0;}
  .eyebrow{
    font-family:'Barlow Condensed',sans-serif;
    font-weight:600;
    font-size:15px;
    color:var(--red-dark);
    letter-spacing:0.3px;
    margin-bottom:10px;
  }
  .btn{
    display:inline-flex;
    align-items:center;
    gap:8px;
    padding:13px 26px;
    border-radius:var(--radius);
    font-family:'Barlow Condensed',sans-serif;
    font-weight:600;
    font-size:18px;
    letter-spacing:0.2px;
    border:1.5px solid transparent;
    cursor:pointer;
    transition:background .15s ease, color .15s ease, border-color .15s ease;
  }
  .btn-primary{background:var(--red);color:var(--white);}
  .btn-primary:hover{background:var(--red-dark);}
  .btn-outline{border-color:var(--white);color:var(--white);}
  .btn-outline:hover{background:var(--white);color:var(--ink);}
  .btn-ghost{border-color:var(--ink);color:var(--ink);}
  .btn-ghost:hover{background:var(--ink);color:var(--white);}
  .btn-wsp{background:#2fae5a;color:#fff;}
  .btn-wsp:hover{background:#25923f;}

  /* ---------------- HEADER ---------------- */
  header{
    position:sticky;top:0;z-index:50;
    background:var(--white);
    border-bottom:1px solid var(--line);
  }
  .header-inner{
    max-width:var(--maxw);margin:0 auto;padding:0 28px;
    display:flex;align-items:center;justify-content:space-between;
    height:76px;
  }
  .logo{display:flex;align-items:center;gap:10px;}
  .logo svg{height:40px;width:auto;}
  .logo .wordmark{font-family:'Barlow Condensed',sans-serif;line-height:1;}
  .logo .wordmark .ckc{font-weight:800;font-size:24px;color:var(--ink);}
  .logo .wordmark .ar{font-weight:600;font-size:12px;color:var(--red);letter-spacing:1px;}
  .logo .wordmark .tag{font-family:'Inter',sans-serif;font-weight:500;font-size:9.5px;color:var(--steel-light);letter-spacing:.3px;}
  .logo-img{height:52px;width:auto;display:block;}
  .footer-logo-white{display:flex;align-items:center;gap:10px;}
  .logo-img-white{height:34px;width:auto;display:block;}
  .wordmark-white{font-family:'Barlow Condensed',sans-serif;line-height:1.25;}
  .wordmark-white .ar{font-weight:700;font-size:14px;color:var(--white);letter-spacing:.5px;}
  .wordmark-white .tag{font-family:'Inter',sans-serif;font-weight:500;font-size:9px;color:#9a9da2;letter-spacing:.3px;margin-top:2px;}

  nav.mainnav{display:flex;align-items:center;gap:34px;}
  nav.mainnav a{
    font-family:'Barlow Condensed',sans-serif;
    font-weight:600;font-size:18px;color:var(--ink);
    position:relative;padding:6px 0;
  }
  nav.mainnav a::after{
    content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--red);
    transition:width .18s ease;
  }
  nav.mainnav a:hover::after{width:100%;}

  .header-cta{display:flex;align-items:center;gap:18px;}
  .header-phone{font-family:'Barlow Condensed',sans-serif;font-weight:600;font-size:17px;color:var(--steel);white-space:nowrap;}
  .burger{display:none;background:none;border:none;cursor:pointer;padding:6px;}
  .burger span{display:block;width:24px;height:2px;background:var(--ink);margin:5px 0;}

  /* ---------------- HERO ---------------- */
  .hero{
    background:var(--ink);
    color:var(--white);
    position:relative;
    overflow:hidden;
    padding:96px 0 0 0;
  }
  .hero .wrap{
    display:grid;grid-template-columns:1.1fr 0.9fr;gap:50px;align-items:start;
    padding-bottom:70px;
  }
  .hero h1{font-size:56px;color:var(--white);}
  .hero h1 em{font-style:normal;color:#ff5c5c;}
  .hero .lede{text-wrap:pretty;font-size:19px;color:#c9cbce;max-width:46ch;margin:22px 0 32px 0;}
  .hero .cta-row{display:flex;gap:14px;flex-wrap:wrap;}
  .hero-art{position:relative;}
  .hero-art svg{width:100%;height:auto;}
  .hero-video-frame{
    position:relative;
    border:1px solid #35363a;
    background:#000;
    overflow:hidden;
    box-shadow:0 20px 50px rgba(0,0,0,.45);
  }
  .hero-video{
    display:block;
    width:100%;
    height:auto;
    aspect-ratio:16/9;
    object-fit:cover;
  }
  .hero-video-badge{
    position:absolute;top:14px;right:14px;
    width:42px;height:42px;
    background:rgba(28,28,30,0.6);
    border-radius:50%;
    display:flex;align-items:center;justify-content:center;
    backdrop-filter:blur(2px);
  }
  .hero-video-caption{
    position:absolute;left:0;right:0;bottom:0;
    background:linear-gradient(0deg, rgba(0,0,0,0.88) 40%, rgba(0,0,0,0));
    color:#e9e9ea;
    font-size:12.5px;
    line-height:1.5;
    padding:34px 16px 14px 16px;
  }
  .hero-video-caption strong{
    display:block;
    font-family:'Barlow Condensed',sans-serif;
    font-weight:700;
    font-size:15px;
    color:#fff;
    margin-bottom:2px;
  }
  .hero-stats{
    display:flex;gap:0;margin-top:56px;
    border-top:1px solid #35363a;
  }
  .hero-stats .stat{flex:1;padding:20px 22px 24px 0;}
  .hero-stats .stat:last-child{padding-right:0;}
  .hero-stats .stat .num{font-family:'Barlow Condensed',sans-serif;font-weight:800;font-size:28px;color:var(--amber);white-space:nowrap;}
  .hero-stats .stat .lbl{font-size:12.5px;color:#a9abaf;margin-top:4px;line-height:1.35;}

  .social-panel{
    margin-top:28px;
    border:1px solid #35363a;
    background:rgba(255,255,255,0.03);
    padding:14px 18px;
    display:inline-flex;
    flex-direction:column;
    gap:8px;
  }
  .social-row{display:flex;align-items:center;gap:16px;}
  .social-label{
    font-family:'Barlow Condensed',sans-serif;font-weight:600;font-size:15px;
    color:#c9cbce;min-width:110px;
  }
  .social-icons{display:flex;gap:8px;}
  .social-icons a{
    width:28px;height:28px;border-radius:8px;overflow:hidden;
    display:flex;align-items:center;justify-content:center;
    transition:transform .15s ease, box-shadow .15s ease;
  }
  .social-icons a svg, .social-icons a img{display:block;width:100%;height:100%;object-fit:contain;}
  .social-icons a:hover{transform:translateY(-2px);box-shadow:0 4px 10px rgba(0,0,0,.35);}

  /* ---------------- NORMS STRIP ---------------- */
  .norms-strip{
    background:var(--white);
    border-bottom:1px solid var(--line);
    padding:56px 0;
  }
  .norms-strip.labs-strip{background:var(--paper);}
  .norms-strip.labs-strip .norm-tile{background:var(--white);}
  .norms-strip-head{margin-bottom:32px;max-width:640px;}
  .norms-strip-head h2{font-size:28px;}
  .norms-logo-grid{
    display:flex;flex-wrap:wrap;gap:2px;
    background:var(--line);
    border:1px solid var(--line);
  }
  .norm-tile{
    background:var(--white);
    flex:1 1 calc(100%/6 - 2px);
    min-width:130px;
    min-height:88px;
    display:flex;align-items:center;justify-content:center;
    padding:16px 18px;
  }
  .norm-tile img{max-width:100%;max-height:48px;width:auto;object-fit:contain;}

  /* ---------------- SECTION HEADS ---------------- */
  .section-head{max-width:640px;margin-bottom:50px;}
  .section-head h2{font-size:40px;}
  .section-head .lede{font-size:17px;color:var(--steel);margin-top:14px;}

  /* ---------------- QUIENES SOMOS ---------------- */
  #quienes-somos{background:var(--white);}
  .qs-grid{display:grid;grid-template-columns:1.3fr 1fr;gap:64px;align-items:start;}
  .qs-copy p{font-size:16.5px;color:#333;line-height:1.65;}
  .qs-copy strong{color:var(--red-dark);}
  .qs-highlight{
    display:flex;align-items:center;gap:22px;margin:30px 0;padding:22px 24px;background:var(--paper);border-left:4px solid var(--red);
  }
  .qs-highlight .num{
    font-family:'Barlow Condensed',sans-serif;font-weight:800;font-size:30px;color:var(--red);
    line-height:1;white-space:nowrap;flex-shrink:0;
  }
  .qs-highlight .txt{font-size:14.5px;color:var(--steel);}
  .qs-side h3{font-size:22px;margin-bottom:18px;}
  .assoc-list{display:flex;flex-direction:column;gap:10px;margin-bottom:34px;}
  .assoc-list .badge{align-self:flex-start;}
  .qs-side .note{font-size:12.5px;color:var(--steel-light);border-top:1px solid var(--line);padding-top:16px;}
  .logo-grid{
    display:flex;flex-wrap:wrap;gap:2px;
    background:var(--line);
    margin-bottom:30px;
    border:1px solid var(--line);
  }
  .logo-tile{
    background:var(--white);
    padding:18px 22px;
    display:flex;align-items:center;justify-content:center;
    min-height:76px;
    flex:1 1 calc(50% - 2px);
  }
  .logo-tile img{max-width:100%;max-height:42px;width:auto;object-fit:contain;}

  /* ---------------- PRODUCTOS ---------------- */
  #productos{background:var(--paper);}
  .prod-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:2px;background:var(--line);margin-bottom:56px;}
  .prod-card{background:var(--white);padding:32px 28px;display:flex;flex-direction:column;}
  .prod-card .icon{width:46px;height:46px;margin-bottom:18px;color:var(--red);}
  .prod-card h3{font-size:24px;margin-bottom:4px;}
  .prod-card .sub{font-family:'Inter',sans-serif;font-weight:500;font-size:13px;color:var(--red-dark);margin-bottom:16px;text-transform:none;}
  .prod-card ul{margin:0;padding:0 0 0 18px;font-size:14.5px;color:var(--steel);line-height:1.9;flex:1;}
  .prod-card .certs{display:flex;gap:6px;flex-wrap:wrap;margin-top:20px;}
  .prod-card .certs span{font-size:11.5px;font-weight:600;font-family:'Barlow Condensed',sans-serif;border:1px solid var(--line);padding:3px 8px;color:var(--steel-light);}

  .prod-detail{
    display:grid;grid-template-columns:220px 1fr;gap:0;
    border:1px solid var(--line);
    margin-bottom:2px;
    background:var(--white);
  }
  .prod-detail + .prod-detail{border-top:none;}
  .prod-detail .pd-head{
    background:var(--ink);color:var(--white);
    padding:26px 24px;
  }
  .prod-detail .pd-head .eyebrow2{font-size:12px;color:#9a9da2;font-family:'Barlow Condensed';font-weight:600;letter-spacing:.4px;margin-bottom:6px;}
  .prod-detail .pd-head h4{font-size:22px;line-height:1.1;}
  .pd-items{padding:24px;display:grid;grid-template-columns:repeat(2,1fr);gap:18px 30px;}
  .pd-item{border-bottom:1px solid var(--paper-dim);padding-bottom:16px;}
  .pd-item .name{font-family:'Barlow Condensed',sans-serif;font-weight:700;font-size:17px;color:var(--ink);}
  .pd-item .name a{color:var(--ink);border-bottom:1.5px solid transparent;transition:color .15s ease, border-color .15s ease;}
  .pd-item .name a:hover{color:var(--red-dark);border-color:var(--red-dark);}
  .pd-item .desc{font-size:13.5px;color:var(--steel);margin:4px 0 6px 0;}
  .pd-item .norms{font-size:11.5px;color:var(--red-dark);font-weight:600;letter-spacing:.2px;}

  .prod-cta{
    margin-top:44px;padding:36px;background:var(--ink);color:var(--white);
    display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
  }
  .prod-cta h3{color:var(--white);font-size:26px;max-width:520px;}
  .prod-cta p{color:#b9bbbe;margin:8px 0 0 0;font-size:14.5px;}

  /* ---------------- CERTIFICADOS ---------------- */
  #certificados{background:var(--white);}
  .cert-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:start;}
  .steps{display:flex;flex-direction:column;gap:0;}
  .step{display:flex;gap:20px;padding:26px 0;border-bottom:1px solid var(--line);}
  .step:last-of-type{border-bottom:none;}
  .step .step-num{
    font-family:'Barlow Condensed',sans-serif;font-weight:800;font-size:30px;color:var(--red);
    min-width:44px;
  }
  .step h4{font-size:20px;margin-bottom:6px;}
  .step p{font-size:15px;color:var(--steel);margin-bottom:10px;}
  .link-box{
    display:inline-flex;align-items:center;gap:10px;
    background:var(--red);color:var(--white);
    padding:12px 20px;font-family:'Barlow Condensed';font-weight:600;font-size:16px;
    border-radius:var(--radius);
  }
  .link-box:hover{background:var(--red-dark);}
  .field-mock{display:flex;gap:10px;margin-top:6px;flex-wrap:wrap;}
  .field-mock span{
    font-size:13px;color:var(--steel);background:var(--paper);border:1px solid var(--line);
    padding:6px 12px;border-radius:var(--radius);
  }

  .cert-model{background:var(--paper);padding:32px;border:1px solid var(--line);}
  .cert-model h3{font-size:22px;margin-bottom:10px;}
  .cert-model p{font-size:14.5px;color:var(--steel);}
  .cert-fields{margin:18px 0 0 0;padding:0;list-style:none;display:grid;grid-template-columns:1fr 1fr;gap:10px 18px;}
  .cert-fields li{
    font-size:13.5px;color:var(--ink);
    padding-left:16px;position:relative;
  }
  .cert-fields li::before{
    content:"";position:absolute;left:0;top:7px;width:7px;height:7px;background:var(--amber);
  }

  /* ---------------- FOOTER ---------------- */
  footer{background:var(--ink);color:#c9cbce;padding:56px 0 0 0;}
  .footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:40px;padding-bottom:44px;border-bottom:1px solid #303236;}
  .footer-brand p{font-size:14px;color:#9a9da2;margin-top:14px;max-width:34ch;}
  .footer-col h5{font-family:'Barlow Condensed';font-size:16px;color:var(--white);margin-bottom:14px;font-weight:600;}
  .footer-col a{display:block;font-size:14.5px;color:#b0b2b6;padding:5px 0;}
  .footer-col a:hover{color:var(--white);}
  .footer-social{display:flex;gap:10px;margin-top:6px;}
  .footer-social a{
    width:34px;height:34px;border-radius:9px;overflow:hidden;
    display:flex;align-items:center;justify-content:center;
    transition:transform .15s ease, box-shadow .15s ease;
  }
  .footer-social a svg, .footer-social a img{display:block;width:100%;height:100%;object-fit:contain;}
  .footer-social a:hover{transform:translateY(-2px);box-shadow:0 4px 10px rgba(0,0,0,.4);}
  .footer-bottom{
    max-width:var(--maxw);margin:0 auto;padding:20px 28px 26px 28px;
    display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;
    font-size:13px;color:#8b8d91;
  }

  .wsp-float{
    position:fixed;right:20px;bottom:20px;z-index:60;
    background:#2fae5a;color:#fff;
    width:56px;height:56px;border-radius:50%;
    display:flex;align-items:center;justify-content:center;
    box-shadow:0 6px 18px rgba(0,0,0,.25);
  }
  .wsp-float svg{width:32px;height:32px;}

  /* ---------------- PRODUCT PAGE ---------------- */
  .breadcrumb{
    font-family:'Barlow Condensed',sans-serif;font-weight:600;font-size:15px;
    color:var(--steel-light);padding:20px 0;
  }
  .breadcrumb a{color:var(--steel);}
  .breadcrumb a:hover{color:var(--red);}
  .breadcrumb .sep{margin:0 6px;color:var(--line);}
  .breadcrumb .current{color:var(--red-dark);}

  .product-hero{background:var(--ink);color:var(--white);padding:50px 0 60px 0;}
  .product-hero .eyebrow2{
    font-family:'Barlow Condensed',sans-serif;font-weight:600;font-size:14px;
    color:var(--amber);letter-spacing:.4px;margin-bottom:10px;
  }
  .product-hero h1{font-size:44px;color:var(--white);max-width:18ch;}
  .product-hero .lede{font-size:17px;color:#c9cbce;max-width:56ch;margin:18px 0 26px 0;}
  .norm-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:26px;}
  .norm-tags span{
    font-family:'Barlow Condensed',sans-serif;font-weight:600;font-size:14px;
    border:1px solid #45474b;color:#d7d9db;padding:5px 12px;
  }

  .product-body{background:var(--white);padding:64px 0;}
  .pb-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:60px;align-items:start;}
  .pb-block{margin-bottom:40px;}
  .pb-block h2{font-size:26px;margin-bottom:14px;}
  .pb-block p{font-size:15.5px;color:#333;line-height:1.7;}
  .pb-block ul{margin:0;padding-left:18px;color:#333;font-size:15px;line-height:1.9;}
  .pb-note{
    background:var(--paper);border-left:4px solid var(--amber);padding:18px 22px;font-size:14px;color:var(--steel);
  }

  /* Galería de fotos de producto */
  .product-gallery-section{background:var(--white);padding:0 0 8px 0;}
  .product-gallery{
    display:grid;grid-template-columns:1fr 1fr;gap:2px;
    background:var(--line);
    margin-top:-1px;
  }
  .product-gallery figure{
    margin:0;background:var(--white);
  }
  .product-gallery img{
    width:100%;height:340px;object-fit:contain;background:var(--paper);display:block;
  }
  .product-gallery figcaption{
    padding:14px 20px;font-size:13.5px;color:var(--steel);border-top:1px solid var(--line);
  }

  .product-gallery-3{grid-template-columns:1fr 1fr 1fr;}
  .product-gallery-4{grid-template-columns:1fr 1fr 1fr 1fr;}
  .product-gallery-1{grid-template-columns:1fr;max-width:420px;margin:0 auto;}
  .product-gallery-1 img{height:auto;max-height:480px;}
  .product-gallery-3 img{height:260px;}

  /* Grilla de ejemplos de aplicación (dentro del cuerpo del artículo) */
  .app-gallery{
    display:grid;grid-template-columns:1fr 1fr;gap:2px;
    background:var(--line);border:1px solid var(--line);
  }
  .app-gallery figure{margin:0;background:var(--white);}
  .app-gallery img{width:100%;height:190px;object-fit:cover;display:block;}
  .app-gallery figcaption{
    padding:10px 14px;font-size:12.5px;color:var(--steel);border-top:1px solid var(--line);
  }

  /* Tabla de especificaciones técnicas */
  .spec-table{border:1px solid var(--line);}
  .spec-table-row{
    display:flex;justify-content:space-between;gap:16px;
    padding:12px 18px;border-bottom:1px solid var(--line);font-size:14.5px;
  }
  .spec-table-row:last-child{border-bottom:none;}
  .spec-table-row:nth-child(odd){background:var(--paper);}
  .spec-table-row .k{color:var(--steel);}
  .spec-table-row .v{color:var(--ink);font-weight:600;text-align:right;}

  /* Lista de características con check */
  .features-list{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:1fr 1fr;gap:10px 20px;}
  .features-list li{
    position:relative;padding-left:24px;font-size:14.5px;color:#333;line-height:1.5;
  }
  .features-list li::before{
    content:"";position:absolute;left:0;top:6px;width:14px;height:14px;
    background:var(--red);
    -webkit-mask:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M20 6L9 17l-5-5" stroke="black" stroke-width="3" fill="none" stroke-linecap="round" stroke-linejoin="round"/></svg>') center/contain no-repeat;
    mask:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M20 6L9 17l-5-5" stroke="black" stroke-width="3" fill="none" stroke-linecap="round" stroke-linejoin="round"/></svg>') center/contain no-repeat;
  }

  /* Tarjeta de descarga de ficha técnica */
  .download-card{
    background:var(--white);border:1px solid var(--line);padding:22px;margin-bottom:20px;
    display:flex;flex-direction:column;gap:10px;
  }
  .download-card svg{color:var(--red);}
  .download-card h3{font-size:17px;}
  .download-card p{font-size:13px;color:var(--steel-light);margin:2px 0 6px 0;}
  .download-card .btn{width:100%;justify-content:center;}

  .spec-card{background:var(--paper);border:1px solid var(--line);padding:26px;margin-bottom:20px;}
  .spec-card h3{font-size:19px;margin-bottom:14px;}
  .spec-row{display:flex;justify-content:space-between;gap:12px;padding:10px 0;border-bottom:1px solid var(--paper-dim);font-size:14px;}
  .spec-row:last-child{border-bottom:none;}
  .spec-row .k{color:var(--steel-light);}
  .spec-row .v{color:var(--ink);font-weight:600;text-align:right;}

  .norm-line{
    padding:10px 0;border-bottom:1px solid var(--paper-dim);font-size:14.5px;color:var(--ink);
  }
  .norm-line:last-child{border-bottom:none;}
  .norm-line strong{font-weight:700;}

  .cta-card{background:var(--ink);color:var(--white);padding:26px;text-align:center;}
  .cta-card h3{font-size:20px;margin-bottom:8px;}
  .cta-card p{font-size:13.5px;color:#b9bbbe;margin-bottom:18px;}
  .cta-card .btn{width:100%;justify-content:center;}

  .related-strip{background:var(--paper);padding:50px 0 70px 0;}
  .related-strip h3{font-size:24px;margin-bottom:22px;}
  .related-list{display:flex;gap:14px;flex-wrap:wrap;}
  .related-list a{
    background:var(--white);border:1px solid var(--line);padding:12px 18px;
    font-family:'Barlow Condensed',sans-serif;font-weight:600;font-size:16px;color:var(--ink);
  }
  .related-list a:hover{border-color:var(--red);color:var(--red-dark);}

  @media (max-width:900px){
    .pb-grid{grid-template-columns:1fr;}
    .product-hero h1{font-size:34px;max-width:none;}
    .product-gallery{grid-template-columns:1fr;}
    .product-gallery img{height:260px;}
    .product-gallery-3{grid-template-columns:1fr;}
    .product-gallery-4{grid-template-columns:1fr 1fr;}
    .features-list{grid-template-columns:1fr;}
    .app-gallery{grid-template-columns:1fr 1fr;}
    .app-gallery img{height:140px;}
  }

  /* ---------------- RESPONSIVE ---------------- */
  @media (max-width:980px){
    nav.mainnav{position:fixed;top:76px;left:0;right:0;background:var(--white);
      flex-direction:column;align-items:flex-start;gap:0;padding:10px 28px 20px 28px;
      border-bottom:1px solid var(--line);transform:translateY(-130%);transition:transform .2s ease;}
    nav.mainnav.open{transform:translateY(0);}
    nav.mainnav a{padding:12px 0;width:100%;font-size:20px;}
    .burger{display:block;}
    .header-phone{display:none;}
    .logo-img{height:38px;}
    .header-inner{height:64px;}
    header{top:0;}
    nav.mainnav{top:64px;}
    .hero .wrap{grid-template-columns:1fr;}
    .hero-art{order:-1;max-width:420px;width:100%;margin:0 auto 8px auto;}
    .hero h1{font-size:42px;}
    .qs-grid{grid-template-columns:1fr;}
    .prod-cards{grid-template-columns:1fr;}
    .prod-detail{grid-template-columns:1fr;}
    .pd-items{grid-template-columns:1fr;}
    .cert-grid{grid-template-columns:1fr;}
    .footer-grid{grid-template-columns:1fr;gap:30px;}
    .hero-stats{flex-wrap:wrap;}
    .hero-stats .stat{flex:1 1 50%;padding:16px 12px 8px 0;}
    section{padding:56px 0;}
  }

/* Enlaces dentro del cuerpo de producto */
.pb-block p a{color:var(--red-dark);font-weight:600;text-decoration:underline;text-underline-offset:2px;}

/* DC333 Usos múltiples: grilla de aplicaciones */
.uses-section{background:var(--white);padding:48px 0 40px;}
.uses-section h2{margin-bottom:6px;}
.uses-intro{color:var(--steel-light);margin-bottom:24px;max-width:720px;}
.use-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.use-card{background:var(--paper);border:1px solid var(--line);display:flex;flex-direction:column;overflow:hidden;}
.use-card img{width:100%;aspect-ratio:4/3;object-fit:cover;display:block;}
.use-body{padding:16px 18px 18px;display:flex;flex-direction:column;flex:1;}
.use-body h3{font-size:20px;margin-bottom:6px;}
.use-body p{font-size:14px;color:var(--steel);margin-bottom:14px;flex:1;}
.use-meta{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap;border-top:1px solid var(--line);padding-top:12px;font-size:13px;}
.use-rend{color:var(--steel);}
.use-rend strong{color:var(--red-dark);}
.use-dl{font-weight:600;color:var(--ink);text-decoration:underline;text-underline-offset:2px;}
.use-dl:hover{color:var(--red);}
@media (max-width:900px){.use-grid{grid-template-columns:1fr 1fr;}}
@media (max-width:600px){.use-grid{grid-template-columns:1fr;}.uses-section{padding:32px 0;}}

/* Galería de aplicaciones en 3 columnas (CKC-2020) */
.app-gallery-3{grid-template-columns:1fr 1fr 1fr;}
.app-gallery-3 img{height:260px;}
.app-gallery-3 .wide{grid-column:span 2;}
@media (max-width:900px){.app-gallery-3{grid-template-columns:1fr 1fr;}.app-gallery-3 img{height:220px;}}
@media (max-width:600px){.app-gallery-3 img{height:200px;}}

/* Fotos de envase sobre fondo blanco */
.product-gallery-1 img{background:var(--white);}

/* Galería de una foto horizontal ancha */
.product-gallery-1.product-gallery-wide{max-width:720px;}

/* Ejemplo de certificado en Consulta de Certificados */
.cert-example{margin:18px 0 0 0;border:1px solid var(--line);background:var(--white);}
.cert-example img{width:100%;height:auto;display:block;}
.cert-example figcaption{padding:10px 14px;font-size:13px;color:var(--steel);border-top:1px solid var(--line);}

/* Banda de marca (fabricante) */
.brand-band{background:var(--white);padding:28px 0 8px;}
.brand-band-inner{display:flex;align-items:center;gap:28px;border:1px solid var(--line);padding:20px 24px;background:var(--paper);}
.brand-logo{width:260px;max-width:45%;height:auto;flex:none;}
.brand-band-inner p{margin:0;font-size:15px;color:var(--steel);}
@media (max-width:600px){.brand-band-inner{flex-direction:column;align-items:flex-start;gap:14px;}.brand-logo{max-width:80%;}}

/* Etiquetas de familia en el detalle de productos: más grandes y legibles */
.prod-detail .pd-head .eyebrow2{font-size:16px;color:#c9ccd0;letter-spacing:.5px;margin-bottom:8px;}
@media (max-width:600px){.prod-detail .pd-head .eyebrow2{font-size:15px;}}

  /* ---------- Encontrá la solución (home) ---------- */
  .prod-card .desc{font-size:14.5px;color:var(--steel);line-height:1.6;margin:0 0 14px 0;}
  .finder{background:var(--paper);}
  .finder-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
  .finder-card{display:flex;flex-direction:column;background:var(--white);border:1px solid var(--line);border-top:4px solid var(--red);padding:26px 22px;text-decoration:none;color:var(--ink);transition:transform .15s ease, box-shadow .15s ease;}
  .finder-card:hover{transform:translateY(-3px);box-shadow:0 10px 24px rgba(0,0,0,.08);}
  .finder-card h3{font-size:21px;line-height:1.15;margin:0 0 10px 0;}
  .finder-card p{font-size:14.5px;color:var(--steel);line-height:1.55;margin:0 0 18px 0;flex:1;}
  .finder-link{font-family:'Barlow Condensed',sans-serif;font-weight:700;font-size:16px;color:var(--red);}
  .finder-help{display:flex;align-items:center;justify-content:space-between;gap:24px;margin-top:26px;padding:22px 24px;background:var(--white);border:1px solid var(--line);}
  .finder-help p{margin:0;font-size:15px;color:var(--steel);max-width:720px;}
  .finder-help strong{color:var(--ink);}
  #firestop,#resistencia,#reaccion,#otros{scroll-margin-top:96px;}
  @media (max-width:1000px){.finder-grid{grid-template-columns:repeat(2,1fr);}}
  @media (max-width:640px){.finder-grid{grid-template-columns:1fr;}.finder-help{flex-direction:column;align-items:flex-start;}}

  .btn-wsp-head{gap:10px;}
  .btn-wsp-head svg{width:24px;height:24px;flex:none;}

  /* ---------- WhatsApp del encabezado (opción C) ---------- */
  .wa-head{display:inline-flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);}
  .wa-head-ic{width:40px;height:40px;border-radius:50%;background:#25D366;color:#fff;display:grid;place-items:center;flex:none;transition:transform .15s ease, box-shadow .15s ease;}
  .wa-head-ic svg{width:22px;height:22px;}
  .wa-head:hover .wa-head-ic{transform:scale(1.06);box-shadow:0 4px 12px rgba(37,211,102,.4);}
  .wa-head-tx{display:flex;flex-direction:column;line-height:1.15;}
  .wa-head-tx small{font:500 12px 'Inter',sans-serif;color:var(--steel-light);}
  .wa-head-tx strong{font:700 16px 'Inter',sans-serif;color:var(--ink);white-space:nowrap;}
  .wa-head:hover strong{color:#1a9e4b;}
  .wa-head-short{display:none;}
  /* Celular/tablet: el header es sticky, así que el CTA queda siempre visible
     como píldora "Escribinos" y el botón flotante sobra (además tapaba texto). */
  @media (max-width:980px){
    .wa-head-tx{display:none;}
    .wa-head{gap:6px;background:#1f9a4f;border-radius:999px;padding:4px 16px 4px 4px;
      box-shadow:0 2px 8px rgba(31,154,79,.28);transition:background .15s ease;}
    .wa-head:hover,.wa-head:active{background:#187f41;}
    .wa-head-ic{width:34px;height:34px;background:transparent;}
    .wa-head-ic svg{width:22px;height:22px;}
    .wa-head:hover .wa-head-ic{transform:none;box-shadow:none;}
    .wa-head-short{display:inline;font:700 18px/1 'Barlow Condensed',sans-serif;
      color:#fff;letter-spacing:.3px;white-space:nowrap;}
    .wsp-float{display:none;}
  }
  @media (max-width:380px){
    .header-inner{padding:0 16px;}
    .header-cta{gap:12px;}
    .logo-img{height:34px;}
  }