:root{
    --navy:#163B75;
    --navy-2:#102A54;
    --blue-light:#4A97D1;
    --steel:#4A6178;
    --gray-light:#EFF4FA;
    --gray-mid:#8B95A1;
    --white:#FFFFFF;
    --accent:#235A91;
    --accent-hover:#1B4670;
    --line:#D7E3EF;
    --font-display:'Oswald', sans-serif;
    --font-body:'Inter', sans-serif;
    --font-mono:'IBM Plex Mono', monospace;
  }
  html[data-lang="th"]{
    --font-display:'Noto Sans Thai', sans-serif;
    --font-body:'Noto Sans Thai', sans-serif;
    --font-mono:'Noto Sans Thai', sans-serif;
  }
  html[data-lang="th"] h1, html[data-lang="th"] h2, html[data-lang="th"] h3,
  html[data-lang="th"] .eyebrow, html[data-lang="th"] .tag, html[data-lang="th"] .filter-btn,
  html[data-lang="th"] .lbl, html[data-lang="th"] .footer-col h4, html[data-lang="th"] .tagline{
    letter-spacing:normal;
  }
  *{box-sizing:border-box; margin:0; padding:0;}
  body{
    font-family:var(--font-body);
    color:var(--navy);
    background:var(--white);
    line-height:1.6;
    -webkit-font-smoothing:antialiased;
  }
  a{color:inherit; text-decoration:none;}
  .eyebrow{
    font-family:var(--font-mono);
    font-size:12px;
    letter-spacing:0.14em;
    text-transform:uppercase;
    color:var(--accent);
    display:inline-flex;
    align-items:center;
    gap:8px;
  }
  .eyebrow::before{
    content:"";
    width:16px; height:1px;
    background:var(--accent);
    display:inline-block;
  }
  h1,h2,h3{
    font-family:var(--font-display);
    text-transform:uppercase;
    letter-spacing:0.01em;
    font-weight:600;
    color:var(--navy);
  }
  .container{max-width:1180px; margin:0 auto; padding:0 32px;}

  header{
    position:sticky; top:0; z-index:50;
    background:rgba(255,255,255,0.96);
    backdrop-filter:blur(6px);
    border-bottom:1px solid var(--line);
  }
  .nav-wrap{
    display:flex; align-items:center; justify-content:space-between;
    padding:14px 32px;
    max-width:1180px; margin:0 auto;
  }
  .brand{display:flex; align-items:center; gap:12px;}
  .brand img{height:42px; width:42px; object-fit:contain;}
  .logo-text{display:flex; flex-direction:column; line-height:1.2;}
  .company-name{
    font-family:var(--font-display);
    font-size:16px;
    font-weight:600;
    letter-spacing:0.01em;
    text-transform:uppercase;
    color:var(--navy);
  }
  .tagline{
    font-family:var(--font-mono);
    font-size:10.5px;
    letter-spacing:0.05em;
    color:var(--gray-mid);
    margin-top:2px;
  }
  nav ul{display:flex; gap:36px; list-style:none;}
  nav a{
    font-size:14px; font-weight:500;
    color:var(--steel);
    padding:6px 2px;
    border-bottom:2px solid transparent;
    transition:color .15s, border-color .15s;
    cursor:pointer;
  }
  nav a:hover, nav a.active{color:var(--navy); border-color:var(--accent);}
  .cta-btn{
    font-family:var(--font-body);
    font-weight:600;
    font-size:14px;
    background:var(--accent);
    color:var(--white);
    padding:11px 22px;
    border:none;
    cursor:pointer;
    letter-spacing:0.01em;
    transition:background .15s;
  }
  .cta-btn:hover{background:var(--accent-hover);}
  .cta-ghost{
    font-family:var(--font-body);
    font-weight:600;
    font-size:14px;
    background:transparent;
    color:var(--white);
    padding:11px 22px;
    border:1px solid rgba(255,255,255,0.4);
    cursor:pointer;
  }
  .nav-actions{display:flex; align-items:center; gap:20px;}
  .lang-toggle{
    display:flex; border:1px solid var(--line); font-family:var(--font-mono);
  }
  .lang-toggle button{
    font-family:var(--font-mono); font-size:12px; letter-spacing:0.04em;
    background:var(--white); color:var(--steel); border:none; padding:8px 12px; cursor:pointer;
  }
  .lang-toggle button.active{background:var(--navy); color:var(--white);}
  .hamburger{
    display:none; background:none; border:none; cursor:pointer;
    padding:6px; margin:0; line-height:0;
  }
  .hamburger .icon-close{display:none;}

  .bracket{
    position:relative;
    border:1px solid var(--line);
    background:var(--white);
    padding:28px;
  }
  .bracket::before, .bracket::after{
    content:"";
    position:absolute;
    width:14px; height:14px;
    border:2px solid var(--accent);
  }
  .bracket::before{top:-1px; left:-1px; border-right:none; border-bottom:none;}
  .bracket::after{bottom:-1px; right:-1px; border-left:none; border-top:none;}

  .hero{
    position:relative;
    background:var(--navy);
    color:var(--white);
    padding:120px 0 100px;
    overflow:hidden;
  }
  .hero::before{
    content:"";
    position:absolute; inset:0;
    background-image:
      repeating-linear-gradient(0deg, rgba(255,255,255,0.06) 0 1px, transparent 1px 64px),
      repeating-linear-gradient(90deg, rgba(255,255,255,0.06) 0 1px, transparent 1px 64px);
    mask-image:linear-gradient(to bottom, rgba(0,0,0,0.9), transparent);
  }
  .hero-inner{position:relative; max-width:680px;}
  .hero h1{
    font-size:clamp(34px, 4.6vw, 54px);
    line-height:1.12;
    margin:18px 0 20px;
    color:var(--white);
  }
  .hero p{
    font-size:17px;
    color:#C3D3E6;
    max-width:520px;
    margin-bottom:36px;
  }
  .hero-actions{display:flex; gap:14px; flex-wrap:wrap;}
  .spec-tag{
    position:absolute; right:0; top:40px;
    font-family:var(--font-mono);
    font-size:11px; color:#7C93AC;
    text-align:right; display:none;
  }
  @media(min-width:900px){.spec-tag{display:block;}}

  section{padding:88px 0;}
  .section-head{max-width:620px; margin-bottom:52px;}
  .section-head h2{font-size:32px; margin-top:14px;}
  .section-head p{color:var(--steel); margin-top:14px; font-size:15.5px;}

  .value-grid{
    display:grid; grid-template-columns:repeat(2,1fr); gap:1px;
    background:var(--line); border:1px solid var(--line);
  }
  .value-item{background:var(--white); padding:32px 26px;}
  .value-item svg{margin-bottom:18px;}
  .value-item h3{font-size:16px; margin-bottom:8px; text-transform:none; font-family:var(--font-body); font-weight:600;}
  .value-item p{font-size:14px; color:var(--steel);}

  .card-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:24px;}
  .prod-card .tag{
    font-family:var(--font-mono); font-size:11px; color:var(--accent);
    letter-spacing:0.08em; text-transform:uppercase;
  }
  .prod-card h3{font-size:19px; margin:12px 0 10px; font-family:var(--font-body); text-transform:none; font-weight:600;}
  .prod-card p{font-size:14px; color:var(--steel); margin-bottom:18px;}
  .prod-card .learn{font-family:var(--font-mono); font-size:12px; color:var(--navy); border-bottom:1px solid var(--navy); cursor:pointer;}
  .icon-plate{
    width:44px; height:44px;
    background:var(--gray-light);
    display:flex; align-items:center; justify-content:center;
    margin-bottom:20px;
  }

  .trust{background:var(--gray-light); padding:40px 0;}
  .trust-inner{display:flex; align-items:center; gap:48px; flex-wrap:wrap; justify-content:space-between;}
  .trust p.eyebrow{margin-right:auto;}
  .trust-logos{display:flex; gap:40px; flex-wrap:wrap;}
  .trust-logos span{
    font-family:var(--font-display); font-weight:600; letter-spacing:0.03em;
    color:var(--gray-mid); font-size:16px; text-transform:uppercase;
  }

  .cta-banner{
    background:var(--navy-2); color:var(--white);
    padding:70px 0; text-align:center;
  }
  .cta-banner h2{color:var(--white); font-size:30px; margin-bottom:24px;}

  .stats-bar{
    display:grid; grid-template-columns:repeat(3,1fr);
    border:1px solid var(--line); margin-bottom:70px;
  }
  .stat{padding:30px 24px; border-right:1px solid var(--line);}
  .stat:last-child{border-right:none;}
  .stat .num{font-family:var(--font-mono); font-size:30px; color:var(--navy); font-weight:500;}
  .stat .lbl{font-family:var(--font-mono); font-size:11px; color:var(--gray-mid); text-transform:uppercase; letter-spacing:0.08em; margin-top:6px;}

  .two-col{display:grid; grid-template-columns:1.1fr 0.9fr; gap:64px; align-items:start;}
  .two-col p{color:var(--steel); font-size:15.5px; margin-bottom:16px;}
  .about-visual{
    background:var(--gray-light); border:1px solid var(--line);
    aspect-ratio:4/3; display:flex; align-items:center; justify-content:center;
    font-family:var(--font-mono); font-size:12px; color:var(--gray-mid);
  }

  .filter-row{display:flex; gap:10px; margin-bottom:40px; flex-wrap:wrap;}
  .filter-btn{
    font-family:var(--font-mono); font-size:12px; letter-spacing:0.04em;
    padding:9px 18px; border:1px solid var(--line); background:var(--white);
    cursor:pointer; color:var(--steel); text-transform:uppercase;
  }
  .filter-btn.active{background:var(--navy); color:var(--white); border-color:var(--navy);}

  .contact-grid{display:grid; grid-template-columns:1fr 1fr; gap:60px;}
  .field{margin-bottom:20px;}
  .field label{
    display:block; font-family:var(--font-mono); font-size:11px;
    text-transform:uppercase; letter-spacing:0.06em; color:var(--gray-mid); margin-bottom:8px;
  }
  .field input, .field textarea{
    width:100%; border:1px solid var(--line); padding:12px 14px;
    font-family:var(--font-body); font-size:14px; background:var(--white);
    color:var(--navy);
  }
  .field textarea{min-height:110px; resize:vertical;}
  .info-block{margin-bottom:26px;}
  .info-block .eyebrow{margin-bottom:10px;}
  .info-block p{font-size:15px; color:var(--navy);}
  .map-frame{
    margin-top:10px;
    border:1px solid var(--line);
    height:220px; width:100%;
  }
  .map-frame iframe{width:100%; height:100%; border:0; display:block;}

  footer{background:var(--navy); color:#A9C0D8; padding:56px 0 28px;}
  .footer-top{display:flex; justify-content:space-between; flex-wrap:wrap; gap:40px; margin-bottom:40px;}
  .footer-brand{display:flex; align-items:flex-start; gap:14px;}
  .footer-brand img{height:62px; width:62px; object-fit:contain; flex-shrink:0;}
  .footer-brand .company-name{color:var(--white);}
  .footer-address{
    display:block; font-family:var(--font-mono); font-size:12px;
    color:var(--gray-mid); margin-top:6px; max-width:340px; line-height:1.5;
  }
  .footer-links{display:flex; gap:60px; flex-wrap:wrap;}
  .footer-col h4{
    font-family:var(--font-mono); font-size:11px; text-transform:uppercase;
    letter-spacing:0.08em; color:var(--gray-mid); margin-bottom:14px;
  }
  .footer-col a, .footer-col p{display:block; font-size:14px; margin-bottom:10px; color:#C3D3E6; cursor:pointer;}
  .footer-bottom{
    border-top:1px solid rgba(255,255,255,0.12); padding-top:24px;
    display:flex; justify-content:space-between; font-size:12px; color:var(--gray-mid);
    font-family:var(--font-mono); flex-wrap:wrap; gap:12px;
  }

  @media(max-width:900px){
    .hamburger{display:flex; align-items:center; justify-content:center;}
    nav{
      display:none;
      position:absolute; top:100%; left:0; right:0;
      background:var(--white);
      border-bottom:1px solid var(--line);
      box-shadow:0 12px 20px rgba(15,33,64,0.08);
    }
    header.menu-open nav{display:block;}
    header.menu-open .icon-bars{display:none;}
    header.menu-open .icon-close{display:block;}
    nav ul{flex-direction:column; gap:0; padding:8px 32px 20px; list-style:none;}
    nav ul li{width:100%;}
    nav a{display:block; padding:14px 0; border-bottom:1px solid var(--line);}
    .value-grid{grid-template-columns:repeat(2,1fr);}
    .card-grid{grid-template-columns:1fr;}
    .two-col{grid-template-columns:1fr;}
    .contact-grid{grid-template-columns:1fr;}
    .stats-bar{grid-template-columns:repeat(2,1fr);}
    .stat{border-bottom:1px solid var(--line);}
  }