:root{
    --navy:#08275D;
    --navy-2:#0E3573;
    --blue:#0574C6;
    --blue-deep:#045A9E;
    --blue-pale:#EAF4FC;
    --white:#FFFFFF;
    --bg:#FFFFFF;
    --bg-alt:#F6F9FC;
    --card:#FFFFFF;
    --ink:#12181F;
    --text-soft:#57626E;
    --text-faint:#8895A3;
    --border:#E3E9F0;
    --red:#E8102E;
    --radius-sm:10px;
    --radius:18px;
    --radius-lg:26px;
  }
  *{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--bg);
    color:var(--ink);
    font-family:'Inter', sans-serif;
    line-height:1.7;
    -webkit-font-smoothing:antialiased;
  }
  .wordmark{
    font-family:'Montserrat', sans-serif;
    letter-spacing:0.04em;
    text-transform:uppercase;
  }
  a{color:inherit;}
  img{max-width:100%; display:block;}

  /* language toggle: show only the active language */
  [data-lang="ja"] .en, [data-lang="ja"] .nl{display:none;}
  [data-lang="en"] .ja, [data-lang="en"] .nl{display:none;}
  [data-lang="nl"] .ja, [data-lang="nl"] .en{display:none;}

  .wrap{max-width:1160px; margin:0 auto; padding:0 28px;}
  section{padding:104px 0;}
  .eyebrow{
    font-family:'Montserrat', sans-serif;
    font-size:12px; font-weight:700; letter-spacing:0.16em;
    text-transform:uppercase; color:var(--blue); margin:0 0 16px;
  }
  h2.section-title{
    font-family:'Montserrat', sans-serif;
    font-size:clamp(28px,3.6vw,38px); font-weight:700; color:var(--navy);
    margin:0 0 20px; letter-spacing:-0.01em; line-height:1.2;
  }
  .section-lead{max-width:620px; color:var(--text-soft); font-size:17px; margin:0 0 52px;}
  .section-head{display:flex; align-items:flex-end; justify-content:space-between; gap:24px; flex-wrap:wrap;}

  /* ---------- Header ---------- */
  header{
    position:sticky; top:0; z-index:40;
    background:rgba(255,255,255,0.92); backdrop-filter:blur(10px);
    border-bottom:1px solid var(--border);
  }
  .nav-row{display:flex; align-items:center; justify-content:space-between; padding:16px 28px; max-width:1160px; margin:0 auto;}
  .brand{display:flex; align-items:center; gap:6px; text-decoration:none;}
  .brand-mark{
    width:62px; height:62px; object-fit:contain; flex-shrink:0; display:block;
  }
  .brand-mark-full{height:46px; width:auto; max-width:none; object-fit:contain; display:block;}
  .brand-text{font-family:'Montserrat', sans-serif; font-weight:700; font-size:21px; letter-spacing:0.04em; color:var(--navy); white-space:nowrap;}
  .brand-text span{color:var(--blue);}
  nav.links{display:flex; align-items:center; gap:30px; margin-left:36px;}
  nav.links a{text-decoration:none; color:var(--ink); font-size:14.5px; font-weight:500; padding:6px 2px; border-bottom:2px solid transparent;}
  nav.links a:hover{border-bottom-color:var(--blue); color:var(--navy);}
  .nav-actions{display:flex; align-items:center; gap:14px;}
  .lang-group{display:flex; border:1px solid var(--border); border-radius:999px; overflow:hidden;}
  .lang-group button{
    border:none; background:var(--white); color:var(--text-soft);
    font-family:'Montserrat', sans-serif; font-size:11.5px; font-weight:700;
    padding:7px 11px; cursor:pointer;
  }
  .lang-group button.active{background:var(--navy); color:#fff;}
  .btn-cta{
    background:var(--blue); color:#fff; border:none; text-decoration:none;
    font-family:'Montserrat',sans-serif;
    font-size:13.5px; font-weight:700; letter-spacing:0.01em; padding:12px 22px; border-radius:999px;
    display:inline-block; white-space:nowrap; cursor:pointer; transition:background .15s ease;
  }
  .btn-cta:hover{background:var(--navy);}
  .btn-outline{
    border:1.5px solid var(--navy); color:var(--navy); text-decoration:none;
    font-family:'Montserrat',sans-serif;
    font-size:13.5px; font-weight:700; padding:10.5px 22px; border-radius:999px; display:inline-block;
    transition:background .15s ease, color .15s ease;
  }
  .btn-outline:hover{background:var(--navy); color:#fff;}
  .btn-ghost{
    color:var(--navy); text-decoration:none; font-weight:600; font-size:14px;
    border-bottom:1.5px solid var(--blue); padding-bottom:2px;
  }
  .menu-toggle{display:none; background:none; border:none; cursor:pointer; padding:6px;}
  .menu-toggle span{display:block; width:22px; height:2px; background:var(--navy); margin:5px 0;}

  /* ---------- Hero ---------- */
  .hero{position:relative; overflow:hidden; padding:96px 0 90px;}
  .hero-top{max-width:640px; margin:0 auto 56px; text-align:center;}
  .hero-top .eyebrow{justify-content:center; display:flex; gap:6px;}
  .hero h1{
    font-family:'Montserrat', sans-serif; font-size:clamp(32px,5vw,52px);
    font-weight:800; color:var(--navy); line-height:1.18; margin:0 0 20px; letter-spacing:-0.015em;
  }
  .hero p.lead{font-size:18px; color:var(--text-soft); max-width:520px; margin:0 auto 28px;}
  .capability-row{
    display:flex; justify-content:center; align-items:center; gap:14px; flex-wrap:wrap;
    font-family:'Montserrat',sans-serif; font-size:13px; font-weight:700; letter-spacing:0.05em;
    color:var(--navy-2); text-transform:uppercase; margin-bottom:8px;
  }
  .capability-row .dot{width:4px; height:4px; border-radius:50%; background:var(--text-faint); display:inline-block;}

  .hero-visual{
    position:relative; border-radius:var(--radius-lg); overflow:hidden;
    background:linear-gradient(155deg, var(--navy) 0%, var(--blue-deep) 100%);
    min-height:380px; display:flex; align-items:center; justify-content:center;
    margin:44px 0 36px;
  }
  .hero-visual::before{
    content:""; position:absolute; inset:0; z-index:1;
    background-image:
      linear-gradient(rgba(255,255,255,0.06) 1px, transparent 1px),
      linear-gradient(90deg, rgba(255,255,255,0.06) 1px, transparent 1px);
    background-size:36px 36px;
  }
  .hero-photo-slideshow{position:absolute; inset:0;}
  .hero-photo{
    position:absolute; inset:0; width:100%; height:100%; object-fit:cover;
    opacity:0; transition:opacity 1.4s ease;
  }
  .hero-photo.is-active{opacity:1;}
  @media (prefers-reduced-motion: reduce){
    .hero-photo{transition:none;}
  }
  .hero-photo-overlay{
    position:absolute; inset:0;
    background:linear-gradient(155deg, rgba(8,39,93,0.85) 0%, rgba(4,90,158,0.72) 100%);
  }
  .hero-visual-inner{position:relative; z-index:2; text-align:center; color:#fff; padding:24px;}
  .hero-visual-icon{
    width:56px; height:56px; margin:0 auto 18px; border-radius:50%;
    background:rgba(255,255,255,0.12); display:flex; align-items:center; justify-content:center;
  }
  .hero-visual p{margin:0; font-size:14px; color:rgba(255,255,255,0.82); max-width:340px; font-weight:500;}
  .hero-visual .badge{
    position:absolute; bottom:18px; right:18px; z-index:2;
    background:rgba(255,255,255,0.94); border-radius:999px; padding:8px 16px 8px 8px;
    display:flex; align-items:center; gap:8px;
  }
  .hero-visual .badge .brand-mark{width:28px; height:28px;}
  .hero-visual .badge span{font-family:'Montserrat',sans-serif; font-weight:700; font-size:12px; color:var(--navy);}

  .hero-actions{display:flex; gap:16px; flex-wrap:wrap; justify-content:center;}

  /* ---------- Precision divider (signature element) ---------- */
  .precision-divider{
    display:flex; align-items:center; gap:14px; width:100%;
    max-width:1160px; margin:0 auto; padding:0 28px;
  }
  .precision-divider .line{
    flex:1; height:1px;
    background:repeating-linear-gradient(90deg, var(--border) 0 6px, transparent 6px 12px);
  }
  .precision-divider .mark{
    width:8px; height:8px; background:var(--blue); transform:rotate(45deg); flex-shrink:0;
  }

  /* ---------- Why AIRIQ ---------- */
  .why-grid{display:grid; grid-template-columns:repeat(4,1fr); gap:24px;}
  .why-card{padding:4px 0;}
  .why-index{
    font-family:'Montserrat',sans-serif; font-size:12px; font-weight:700; color:var(--text-faint);
    letter-spacing:0.1em; margin-bottom:14px; display:block;
  }
  .why-card h3{font-family:'Montserrat',sans-serif; font-size:17px; font-weight:700; color:var(--navy); margin:0 0 10px;}
  .why-card p{font-size:14.5px; color:var(--text-soft); margin:0;}

  /* ---------- Services ---------- */
  .service-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:22px;}
  .service-card{background:var(--card); border:1px solid var(--border); border-radius:var(--radius); padding:30px 26px; transition:border-color .15s ease, transform .15s ease;}
  .service-card:hover{border-color:var(--blue); transform:translateY(-2px);}
  .service-icon{width:44px; height:44px; border-radius:11px; background:var(--blue-pale); display:flex; align-items:center; justify-content:center; margin-bottom:18px;}
  .service-card h3{font-family:'Montserrat',sans-serif; font-size:17px; font-weight:700; color:var(--navy); margin:0 0 10px;}
  .service-card p{font-size:14.5px; color:var(--text-soft); margin:0;}
  .tag-soon{display:inline-block; font-size:10.5px; font-weight:700; color:var(--blue); background:var(--blue-pale); border-radius:999px; padding:3px 10px; margin-left:8px; vertical-align:middle; font-family:'Montserrat',sans-serif;}

  /* ---------- Highlight band (expat support) ---------- */
  .highlight-band{background:var(--navy); border-radius:var(--radius-lg); padding:64px 56px; color:#fff;}
  .highlight-band .eyebrow{color:var(--sky, #7BC3F0);}
  .highlight-band h2{font-family:'Montserrat',sans-serif; font-size:clamp(24px,3.2vw,32px); font-weight:700; margin:0 0 18px; letter-spacing:-0.01em; max-width:640px;}
  .highlight-band p{font-size:16px; color:rgba(255,255,255,0.78); max-width:560px; margin:0 0 32px;}
  .highlight-list{display:grid; grid-template-columns:repeat(3,1fr); gap:20px; list-style:none; padding:0; margin:0;}
  .highlight-list li{
    border:1px solid rgba(255,255,255,0.18); border-radius:var(--radius-sm);
    padding:18px 20px; font-size:14.5px; font-weight:600; color:#fff;
  }

  /* ---------- Partner program ---------- */
  .partner-section{background:var(--bg-alt); border-radius:var(--radius-lg); padding:64px 56px;}
  .partner-top{max-width:680px; margin-bottom:44px;}
  .partner-top h2{font-family:'Montserrat',sans-serif; font-size:clamp(24px,3.2vw,32px); font-weight:700; color:var(--navy); margin:0 0 12px; letter-spacing:-0.01em;}
  .partner-top .tagline{font-size:15px; font-weight:600; color:var(--blue); margin:0 0 14px;}
  .partner-top p{font-size:15.5px; color:var(--text-soft); margin:0;}
  .partner-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:20px; margin-bottom:44px;}
  .partner-card{background:var(--card); border:1px solid var(--border); border-radius:var(--radius); padding:24px;}
  .partner-card h4{font-family:'Montserrat',sans-serif; font-size:15px; font-weight:700; color:var(--navy); margin:0 0 8px;}
  .partner-card p{font-size:14px; color:var(--text-soft); margin:0;}
  .partner-tags{display:flex; flex-wrap:wrap; gap:10px; margin-bottom:40px;}
  .partner-tag{
    background:var(--card); border:1px solid var(--border); border-radius:999px;
    padding:8px 16px; font-size:13px; font-weight:600; color:var(--navy);
  }
  .promise-block{
    border-top:1px solid var(--border); padding-top:36px;
    display:flex; align-items:center; justify-content:space-between; flex-wrap:wrap; gap:24px;
  }
  .promise-lines{font-family:'Montserrat',sans-serif; font-size:15px; font-weight:700; color:var(--navy); line-height:1.8;}
  .promise-note{max-width:340px; font-size:14px; color:var(--text-soft); font-style:italic;}

  /* ---------- Projects (before/after) ---------- */
  .projects-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:24px;}
  .ba-card{border:1px solid var(--border); border-radius:var(--radius); overflow:hidden;}
  .ba-photos{display:grid; grid-template-columns:1fr 1fr;}
  .ba-photo{
    position:relative; aspect-ratio:4/3; background:var(--bg-alt);
    display:flex; align-items:center; justify-content:center;
    border-right:1px solid var(--border);
  }
  .ba-photo:last-child{border-right:none;}
  .ba-photo span.label{
    position:absolute; top:10px; left:10px; font-family:'Montserrat',sans-serif;
    font-size:10.5px; font-weight:700; letter-spacing:0.08em; text-transform:uppercase;
    color:var(--navy); background:rgba(255,255,255,0.9); border-radius:999px; padding:3px 9px;
  }
  .ba-caption{padding:16px 18px; font-size:14px; color:var(--text-soft); font-weight:500;}

  /* ---------- Contact ---------- */
  .contact-grid{display:grid; grid-template-columns:0.85fr 1.15fr; gap:56px; align-items:start;}
  .contact-methods{display:grid; gap:14px; margin:24px 0 28px;}
  .method-card{
    display:flex; align-items:center; gap:14px; border:1px solid var(--border);
    border-radius:var(--radius-sm); padding:16px 18px; text-decoration:none;
  }
  .method-icon{
    width:38px; height:38px; border-radius:10px; background:var(--blue-pale);
    display:flex; align-items:center; justify-content:center; flex-shrink:0;
  }
  .method-label{font-size:12.5px; color:var(--text-soft); margin:0 0 2px;}
  .method-value{font-size:15px; font-weight:700; color:var(--navy); margin:0;}
  .placeholder-box{border:1px dashed #C7D6E6; border-radius:var(--radius); background:var(--bg-alt); padding:36px 24px; text-align:center;}
  .placeholder-box p{margin:10px 0 0; font-size:13px; color:var(--text-soft); font-weight:500;}
  .office-address{margin:0 0 16px;}
  .office-address .method-value{line-height:1.5;}
  .map-embed{border:1px solid var(--border); border-radius:var(--radius); overflow:hidden; line-height:0;}
  .map-embed iframe{display:block; width:100%;}
  .form-card{background:var(--card); border:1px solid var(--border); border-radius:var(--radius); padding:32px;}
  .form-row{margin-bottom:18px;}
  .form-row label{display:block; font-size:13px; font-weight:700; color:var(--navy); margin-bottom:6px; font-family:'Montserrat',sans-serif;}
  .form-row input[type="text"], .form-row input[type="email"], .form-row input[type="tel"], .form-row textarea{
    width:100%; border:1px solid var(--border); border-radius:8px; padding:11px 12px;
    font-family:'Inter',sans-serif; font-size:14px; color:var(--ink); background:#FBFDFE;
  }
  .form-row input:focus, .form-row textarea:focus{outline:2px solid var(--blue); outline-offset:1px; border-color:var(--blue);}
  .checks{display:flex; flex-wrap:wrap; gap:10px 18px;}
  .checks label{display:flex; align-items:center; gap:6px; font-size:14px; font-weight:500; color:var(--ink); margin:0;}
  .form-error{display:none; margin-top:14px; padding:12px 14px; border-radius:12px; background:#f5f6f8; color:var(--navy); font-size:14px;}
  .submit-btn:disabled{opacity:.6; cursor:default;}
  .form-note{font-size:13px; color:var(--text-soft); margin-top:14px;}
  .submit-btn{background:var(--blue); color:#fff; border:none; font-weight:700; font-family:'Montserrat',sans-serif; font-size:15px; padding:13px 26px; border-radius:999px; cursor:pointer; width:100%;}
  .submit-btn:hover{background:var(--navy);}
  .form-success{display:none; background:var(--blue-pale); color:var(--navy-2); border-radius:10px; padding:14px 16px; font-size:14px; font-weight:500; margin-top:16px;}

  .seo-links{display:flex; flex-wrap:wrap; gap:10px; margin-top:14px;}
  .seo-links a{
    font-size:13px; color:var(--blue); text-decoration:none; border:1px solid var(--border);
    padding:6px 12px; border-radius:999px; font-weight:500;
  }
  .seo-links a:hover{border-color:var(--blue); background:var(--blue-pale);}

  /* ---------- Principles strip (compact) ---------- */
  .principles-section{padding:40px 0;}
  .principles-band{
    display:flex; align-items:flex-start; gap:28px; flex-wrap:wrap;
    border-top:1px solid var(--border); border-bottom:1px solid var(--border); padding:26px 0;
  }
  .principles-label{
    font-family:'Montserrat',sans-serif; font-size:11.5px; font-weight:700; letter-spacing:0.12em;
    text-transform:uppercase; color:var(--text-faint); flex-shrink:0; padding-top:2px; white-space:nowrap;
  }
  .principles-row{display:flex; flex-wrap:wrap; gap:22px 32px; flex:1;}
  .principle-item{max-width:225px;}
  .principle-item .p-title{
    font-family:'Montserrat',sans-serif; font-size:14.5px; font-weight:700; color:var(--navy); margin:0 0 3px;
  }
  .principle-item .p-desc{font-size:14px; color:var(--text-soft); margin:0; line-height:1.55;}

  footer{background:var(--navy); color:#DCE6F2; padding:56px 0 32px;}
  footer .wrap{display:flex; flex-wrap:wrap; justify-content:space-between; gap:24px;}
  footer .foot-brand{font-family:'Montserrat',sans-serif; font-weight:700; letter-spacing:0.04em; font-size:16px; color:#fff;}
  footer .foot-tag{font-size:13px; color:#9FB6D6; margin-top:6px;}
  footer .foot-copy{font-size:12px; color:#7E97B9; margin-top:34px; width:100%; border-top:1px solid #1E3F73; padding-top:20px;}

  /* ---------- SEO landing pages ---------- */
  .breadcrumb{font-size:13px; color:var(--text-soft); margin-bottom:20px;}
  .breadcrumb a{color:var(--blue); text-decoration:none;}
  .article-body h2{font-family:'Montserrat',sans-serif; color:var(--navy); font-size:21px; font-weight:700; margin:44px 0 14px;}
  .article-body p{color:var(--text-soft); font-size:16px; max-width:720px;}
  .article-body ul{color:var(--text-soft); font-size:16px; max-width:720px; padding-left:20px;}
  .article-body li{margin-bottom:8px;}
  .cta-band{
    background:var(--bg-alt); border-radius:var(--radius); padding:32px; margin:48px 0;
    display:flex; align-items:center; justify-content:space-between; flex-wrap:wrap; gap:16px;
  }
  .cta-band p{margin:0; color:var(--navy-2); font-weight:500; font-size:16px; max-width:480px;}

  @media (max-width: 980px){
    .why-grid{grid-template-columns:repeat(2,1fr);}
    .service-grid{grid-template-columns:repeat(2,1fr);}
    .highlight-list{grid-template-columns:1fr;}
    .partner-grid, .projects-grid{grid-template-columns:1fr;}
  }
  @media (max-width: 860px){
    .why-grid{grid-template-columns:1fr;}
    .service-grid{grid-template-columns:1fr;}
    .contact-grid{grid-template-columns:1fr;}
    .highlight-band, .partner-section{padding:44px 28px;}
    .promise-block{flex-direction:column; align-items:flex-start;}
    .principles-band{flex-direction:column; gap:14px;}
    nav.links{
      position:fixed; top:66px; left:0; right:0; background:var(--bg);
      flex-direction:column; align-items:flex-start; padding:18px 28px; gap:18px;
      border-bottom:1px solid var(--border); display:none;
    }
    nav.links.open{display:flex;}
    .menu-toggle{display:block;}
    .nav-actions .btn-cta{display:none;}
  }