:root{
    --steel:#1a1a1a;
    --steel-2:#3d3d3d;
    --accent:#d10f1f;
    --accent-2:#a80c19;
    --light:#ffffff;
    --muted:#6e6e6e;
    --line:#cfcfcf;
    --white:#ffffff;
    --max:1150px;
  }
  *{box-sizing:border-box;margin:0;padding:0;}
  html{scroll-behavior:smooth;}
  body{font-family:'Segoe UI',Arial,Helvetica,sans-serif;color:var(--steel);line-height:1.6;background:var(--white);}
  a{color:inherit;text-decoration:none;}
  .wrap{max-width:var(--max);margin:0 auto;padding:0 20px;}
  section{padding:64px 0;}
  h1,h2,h3{line-height:1.25;}
  h2.section-title{font-size:28px;margin-bottom:8px;padding-bottom:10px;border-bottom:3px solid var(--accent);display:inline-block;}
  .section-sub{color:var(--muted);margin-bottom:34px;max-width:720px;}

  /* Header */
  header{position:sticky;top:0;z-index:50;background:#fff;color:var(--steel);border-bottom:3px solid var(--accent);}
  .nav{display:flex;align-items:center;justify-content:space-between;height:72px;}
  .brand{display:flex;align-items:center;gap:11px;font-weight:700;font-size:18px;letter-spacing:.3px;color:var(--steel);}
  .brand img{height:52px;width:auto;display:block;}
  .nav ul{display:flex;gap:22px;list-style:none;}
  .nav ul a{font-size:14px;color:var(--steel-2);font-weight:500;transition:color .2s;}
  .nav ul a:hover{color:var(--accent);}
  .nav .cta{background:var(--accent);padding:9px 16px;border-radius:6px;color:#fff;font-size:14px;font-weight:600;}
  .nav .cta:hover{background:var(--accent-2);}
  .menu-btn{display:none;background:none;border:0;color:var(--steel);font-size:24px;cursor:pointer;}

  /* Hero */
  .hero{background:#fff;color:var(--steel);padding:96px 0;border-bottom:1px solid var(--line);}
  .hero .wrap{display:grid;grid-template-columns:1.2fr .8fr;gap:40px;align-items:center;}
  .hero h1{font-size:40px;margin-bottom:16px;}
  .hero h1::after{content:"";display:block;width:90px;height:4px;background:var(--accent);margin-top:18px;}
  .hero p.lead{font-size:18px;color:var(--muted);margin-bottom:26px;}
  .hero .btns{display:flex;gap:14px;flex-wrap:wrap;}
  .btn{display:inline-block;padding:13px 24px;border-radius:7px;font-weight:600;font-size:15px;cursor:pointer;border:0;}
  .btn-primary{background:var(--accent);color:#fff;}
  .btn-primary:hover{background:var(--accent-2);}
  .btn-ghost{background:transparent;color:var(--steel);border:1px solid var(--line);}
  .btn-ghost:hover{border-color:var(--accent);color:var(--accent);}
  .hero-card{background:#fff;border:1px solid var(--line);border-top:4px solid var(--accent);border-radius:4px;padding:24px;}
  .hero-card h3{font-size:16px;margin-bottom:14px;color:var(--steel);}
  .hero-card ul{list-style:none;}
  .hero-card li{display:flex;gap:9px;padding:7px 0;color:var(--steel-2);font-size:14px;border-bottom:1px solid var(--line);}
  .hero-card li:last-child{border:0;}
  .hero-card li::before{content:"\25B8";color:var(--accent-2);}

  /* Trust bar */
  .trust{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
  .trust .wrap{display:flex;flex-wrap:wrap;justify-content:space-around;gap:18px;padding:22px 20px;}
  .trust .stat{text-align:center;flex:1;min-width:130px;}
  .trust .stat b{display:block;font-size:24px;color:var(--accent);}
  .trust .stat span{font-size:13px;color:var(--muted);}

  /* Products */
  .grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
  .card{border:1px solid var(--line);border-radius:4px;padding:24px;background:#fff;transition:border-color .2s,transform .2s;}
  .card:hover{border-color:var(--accent);transform:translateY(-3px);}
  .card .ico{width:52px;height:52px;border-radius:4px;background:var(--accent);display:flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:16px;}
  .card .ico svg{width:28px;height:28px;stroke:#fff;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
  .why .ico{background:var(--accent);}

  /* Divider band */
  .band{
    background:#fff;color:var(--steel);text-align:center;padding:72px 0;
    border-top:3px solid var(--accent);border-bottom:3px solid var(--accent);
  }
  .band h2{font-size:30px;margin-bottom:12px;}
  .band p{color:var(--muted);max-width:640px;margin:0 auto 24px;font-size:16px;}

  /* About with photo */
  .about-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;}
  .about-grid img{width:100%;border-radius:4px;display:block;border:1px solid var(--line);background:#f7f7f7;min-height:280px;object-fit:cover;}
  .card h3{font-size:18px;margin-bottom:8px;}
  .card p{color:var(--muted);font-size:14px;margin-bottom:14px;}
  .card .tag{display:inline-block;font-size:12px;color:var(--accent);font-weight:600;}

  /* Why us */
  .why{background:#fff;color:var(--steel);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
  .why .grid{grid-template-columns:repeat(4,1fr);}
  .why .card{background:#fff;border-color:var(--line);color:var(--steel);}
  .why .card:hover{border-color:var(--accent);}
  .why .card h3{color:var(--steel);}
  .why .card p{color:var(--muted);}

  /* Coverage */
  .coverage-list{display:flex;flex-wrap:wrap;gap:10px;}
  .chip{background:#fff;border:1px solid var(--line);border-radius:20px;padding:7px 16px;font-size:14px;color:var(--steel-2);}
  .chip:hover{border-color:var(--accent);color:var(--accent);}

  /* Contact */
  .contact{background:#fff;border-top:1px solid var(--line);}
  .contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:36px;}
  .info-item{display:flex;gap:14px;margin-bottom:20px;}
  .info-item .ico{font-size:20px;color:var(--accent);}
  .info-item b{display:block;font-size:15px;}
  .info-item span{color:var(--muted);font-size:14px;}
  .c-link{color:var(--steel-2);border-bottom:1px solid var(--line);transition:color .2s,border-color .2s;}
  .c-link:hover{color:var(--accent);border-color:var(--accent);}

  /* Floating WhatsApp button */
  .wa-float{
    position:fixed;right:22px;bottom:22px;z-index:60;
    display:flex;align-items:center;justify-content:center;
    width:58px;height:58px;border-radius:50%;
    background:#25d366;box-shadow:0 4px 14px rgba(0,0,0,.22);
    transition:transform .2s,box-shadow .2s;
  }
  .wa-float:hover{transform:scale(1.07);box-shadow:0 6px 20px rgba(0,0,0,.3);}
  .wa-float svg{width:32px;height:32px;fill:#fff;display:block;}
  .wa-float::after{
    content:"Chat on WhatsApp";
    position:absolute;right:70px;white-space:nowrap;
    background:var(--steel);color:#fff;font-size:13px;font-weight:600;
    padding:7px 12px;border-radius:5px;
    opacity:0;pointer-events:none;transition:opacity .2s;
  }
  .wa-float:hover::after{opacity:1;}
  @media(max-width:520px){
    .wa-float{width:52px;height:52px;right:16px;bottom:16px;}
    .wa-float svg{width:29px;height:29px;}
    .wa-float::after{display:none;}
  }
  form{background:#fff;border:1px solid var(--line);border-top:4px solid var(--accent);border-radius:4px;padding:26px;}
  .field{margin-bottom:16px;}
  .field label{display:block;font-size:13px;font-weight:600;margin-bottom:6px;}
  .field input,.field select,.field textarea{width:100%;padding:11px 13px;border:1px solid var(--line);border-radius:7px;font-size:14px;font-family:inherit;}
  .field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--accent);}
  .field textarea{resize:vertical;min-height:90px;}
  .form-note{font-size:13px;color:var(--muted);margin-top:10px;}
  .ok-msg{display:none;background:#e7f6ec;color:#1a7a3c;border:1px solid #b7e4c7;border-radius:7px;padding:12px;font-size:14px;margin-top:14px;}
  .err-msg{display:none;background:#fdecec;color:#a8151a;border:1px solid #f3c2c2;border-radius:7px;padding:12px;font-size:14px;margin-top:14px;}
  .err-msg a{text-decoration:underline;font-weight:600;}
  #quoteBtn:disabled{opacity:.65;cursor:default;}

  /* Footer */
  footer{background:#fff;color:var(--steel-2);padding:40px 0 24px;border-top:3px solid var(--accent);}
  .foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:30px;margin-bottom:26px;}
  footer h4{color:var(--steel);font-size:15px;margin-bottom:12px;}
  footer ul{list-style:none;}
  footer ul li{padding:4px 0;font-size:14px;}
  footer .kw{font-size:12px;color:var(--muted);line-height:1.9;}
  .foot-bottom{border-top:1px solid var(--line);padding-top:18px;font-size:13px;text-align:center;color:var(--muted);}

  /* narrow desktop: tighten the nav so 7 items still fit on one line */
  @media(min-width:861px) and (max-width:1080px){
    .nav ul{gap:15px;}
    .nav ul a{font-size:13px;}
    .brand{font-size:16px;gap:9px;}
    .brand img{height:44px;}
    .nav .cta{padding:8px 13px;font-size:13px;}
  }

  @media(max-width:860px){
    .wrap{padding:0 26px;}
    .hero .wrap{grid-template-columns:1fr;}
    .hero h1{font-size:32px;}
    .grid,.why .grid{grid-template-columns:1fr 1fr;}
    .contact-grid,.foot-grid,.about-grid{grid-template-columns:1fr;}
    .band{background-attachment:scroll;}
    .about-grid img{min-height:220px;}
    .nav ul{display:none;position:absolute;top:72px;left:0;right:0;flex-direction:column;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 8px 16px rgba(0,0,0,.08);padding:14px 26px;gap:6px;}
    .nav ul.open{display:flex;}
    .nav ul li a{display:block;padding:8px 0;}
    .menu-btn{display:block;}
    .nav .cta{display:none;}
    /* trim inner padding so the wider outer margin doesn't squeeze text */
    .card{padding:22px 20px;}
    form{padding:22px 20px;}
  }
  @media(max-width:520px){
    .grid,.why .grid{grid-template-columns:1fr;}
    section{padding:52px 0;}
  }

  /* ===== Product detail pages ===== */
  /* vertical padding only - horizontal comes from .wrap */
  .crumb{font-size:13px;color:var(--muted);padding-top:22px;}
  .crumb a:hover{color:var(--accent);}
  .crumb span{color:var(--steel-2);}
  .p-head{padding-top:34px;padding-bottom:44px;border-bottom:1px solid var(--line);}
  .p-head h1{font-size:36px;margin-bottom:14px;}
  .p-head h1::after{content:"";display:block;width:90px;height:4px;background:var(--accent);margin-top:16px;}
  .p-head p.lead{font-size:17px;color:var(--muted);max-width:760px;}
  .p-head .btns{display:flex;gap:14px;flex-wrap:wrap;margin-top:26px;}
  .p-body{padding-top:52px;padding-bottom:52px;}
  .p-body h2{font-size:24px;margin:38px 0 12px;padding-bottom:9px;border-bottom:3px solid var(--accent);display:inline-block;}
  .p-body h2:first-child{margin-top:0;}
  .p-body p{color:var(--steel-2);margin-bottom:14px;max-width:820px;}
  .p-body ul.bullets{margin:0 0 16px 20px;color:var(--steel-2);max-width:820px;}
  .p-body ul.bullets li{padding:5px 0;}
  .p-body ul.bullets li::marker{color:var(--accent);}

  /* Spec table */
  .spec-wrap{overflow-x:auto;margin:6px 0 10px;border:1px solid var(--line);border-radius:4px;}
  table.spec{width:100%;border-collapse:collapse;font-size:14px;min-width:420px;}
  table.spec th,table.spec td{text-align:left;padding:13px 16px;border-bottom:1px solid var(--line);vertical-align:top;}
  table.spec tr:last-child th,table.spec tr:last-child td{border-bottom:0;}
  table.spec th{width:210px;font-weight:600;color:var(--steel);background:#fafafa;}
  table.spec td{color:var(--steel-2);}
  .review{font-size:13px;color:var(--muted);border-left:3px solid var(--accent);padding:10px 14px;margin:14px 0 0;background:#fafafa;max-width:820px;}

  /* Related products */
  .rel{border-top:1px solid var(--line);padding-top:44px;padding-bottom:60px;}
  .rel h2{font-size:20px;margin-bottom:18px;}
  .rel-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;}
  .rel-grid a{border:1px solid var(--line);border-radius:4px;padding:15px;font-size:14px;font-weight:600;color:var(--steel);transition:border-color .2s,color .2s;}
  .rel-grid a:hover{border-color:var(--accent);color:var(--accent);}

  /* CTA strip */
  .cta-strip{background:#fff;border-top:3px solid var(--accent);border-bottom:3px solid var(--accent);text-align:center;padding:52px 0;}
  .cta-strip h2{font-size:26px;margin-bottom:10px;}
  .cta-strip p{color:var(--muted);max-width:620px;margin:0 auto 22px;}
  .cta-strip .btns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;}

  @media(max-width:860px){
    .p-head h1{font-size:29px;}
    .rel-grid{grid-template-columns:1fr 1fr;}
  }
  @media(max-width:520px){
    .rel-grid{grid-template-columns:1fr;}
    table.spec{min-width:0;font-size:13px;}
    table.spec th{width:118px;}
    table.spec th,table.spec td{padding:11px 12px;}
  }

  /* Product card titles link to detail pages */
  .card h3 a{transition:color .2s;}
  .card h3 a:hover{color:var(--accent);}