:root{
    --mist:#F5F7F7;
    --paper:#FFFFFF;
    --petrol:#16304A;
    --teal:#17A3A0;
    --amber:#6CBE45;
    --amber-soft:#E3F2DA;
    --blue:#3FA9E5;
    --ink:#16232A;
    --line:#D8E2E2;
    --grad: linear-gradient(90deg, var(--blue) 0%, var(--teal) 50%, var(--amber) 100%);
  }
  *{margin:0;padding:0;box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    background:var(--mist);
    color:var(--ink);
    font-family:'Inter',sans-serif;
    line-height:1.5;
    -webkit-font-smoothing:antialiased;
  }
  h1,h2,h3,.display{
    font-family:'Space Grotesk',sans-serif;
    letter-spacing:-0.01em;
    color:var(--petrol);
  }
  .mono{font-family:'IBM Plex Mono',monospace;}
  a{color:inherit;text-decoration:none;}
  img{max-width:100%;display:block;}
  .wrap{max-width:1180px;margin:0 auto;padding:0 28px;}

  a:focus-visible, button:focus-visible{outline:3px solid var(--amber); outline-offset:2px;}

  @media (prefers-reduced-motion: reduce){
    *{animation-duration:0.001ms !important; animation-iteration-count:1 !important; transition-duration:0.001ms !important;}
  }

  /* ---------- Header ---------- */
  header{
    position:sticky; top:0; z-index:50;
    background:rgba(245,247,247,0.92);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom:1px solid var(--line);
  }
  .nav{
    display:flex; align-items:center; justify-content:space-between;
    padding:16px 0;
    gap:20px;
  }
  .brand{
    display:flex; align-items:center; gap:10px;
    font-family:'Space Grotesk',sans-serif;
    font-weight:700; font-size:19px; color:var(--petrol);
  }
  .brand .mark{flex-shrink:0; display:block;}
  .logo-img{
    height:42px; width:auto; display:block;
  }
  .logo-footer{
    height:56px; width:auto;
    /* the on-dark version already has dark blue bg, so it blends nicely */
  }
  nav ul{
    list-style:none; display:flex; gap:28px;
  }
  nav ul a{
    font-size:15px; font-weight:500; color:var(--ink); opacity:0.85;
    transition:opacity .15s, color .15s;
  }
  nav ul a:hover{opacity:1; color:var(--teal);}
  .nav-cta{
    background:var(--petrol); color:var(--paper);
    padding:11px 20px; border-radius:8px; font-weight:600; font-size:14px;
    white-space:nowrap;
    transition:background .15s;
  }
  .nav-cta:hover{background:var(--teal);}
  .burger{
    display:none; background:none; border:none; cursor:pointer; padding:8px;
    z-index:60;
  }
  .burger span{
    display:block; width:24px; height:2px; background:var(--petrol);
    margin:5px 0; transition:transform .2s, opacity .2s;
  }
  .burger.open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
  .burger.open span:nth-child(2){opacity:0;}
  .burger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

  /* Mobile nav */
  .mobile-nav{
    display:none;
    position:fixed; inset:0; top:0;
    background:rgba(245,247,247,0.98);
    backdrop-filter:blur(12px);
    z-index:55;
    padding:90px 28px 40px;
    flex-direction:column;
    gap:8px;
  }
  .mobile-nav.open{display:flex;}
  .mobile-nav a{
    font-family:'Space Grotesk',sans-serif;
    font-size:22px; font-weight:600; color:var(--petrol);
    padding:14px 0; border-bottom:1px solid var(--line);
  }
  .mobile-nav a:hover{color:var(--teal);}
  .mobile-nav .nav-cta{
    margin-top:20px; text-align:center; display:block;
    padding:16px; font-size:16px;
  }

  /* ---------- Hero ---------- */
  .hero{
    padding:88px 0 100px;
    position:relative;
    overflow:hidden;
  }
  .hero .wrap{
    display:grid; grid-template-columns:1.1fr 0.9fr; gap:60px; align-items:center;
  }
  .eyebrow{
    font-family:'IBM Plex Mono',monospace;
    font-size:13px; letter-spacing:0.08em; text-transform:uppercase;
    color:var(--teal); font-weight:500;
    display:flex; align-items:center; gap:10px; margin-bottom:20px;
  }
  .eyebrow::before{content:""; width:24px; height:2px; background:var(--amber);}
  .hero h1{
    font-size:clamp(36px,5vw,56px);
    font-weight:700; line-height:1.08; margin-bottom:22px;
  }
  .hero h1 em{
    font-style:normal; color:var(--amber);
  }
  .hero p.lead{
    font-size:18px; color:var(--ink); opacity:0.82; max-width:480px; margin-bottom:32px;
  }
  .hero-ctas{display:flex; gap:14px; flex-wrap:wrap;}
  .btn-primary{
    background:var(--amber); color:var(--paper); font-weight:600; font-size:15px;
    padding:15px 28px; border-radius:9px; display:inline-flex; align-items:center; gap:8px;
    transition:transform .15s, background .15s;
  }
  .btn-primary:hover{background:#5aad3a; transform:translateY(-1px);}
  .btn-secondary{
    border:1.5px solid var(--petrol); color:var(--petrol); font-weight:600; font-size:15px;
    padding:14px 26px; border-radius:9px; transition:background .15s;
  }
  .btn-secondary:hover{background:rgba(22,48,74,0.06);}

  /* Dial card */
  .dial-card{
    background:var(--paper); border:1px solid var(--line); border-radius:20px;
    padding:32px; box-shadow:0 20px 50px -25px rgba(14,59,67,0.25);
  }
  .dial-card .mono{font-size:12px; color:var(--teal); text-transform:uppercase; letter-spacing:.08em;}
  .mini-services{
    display:flex; justify-content:space-between; gap:8px;
    margin:20px 0 24px; padding-bottom:22px; border-bottom:1px solid var(--line);
  }
  .mini{display:flex; flex-direction:column; align-items:center; gap:8px; flex:1; text-align:center;}
  .mini svg{flex-shrink:0;}
  .mini span{font-size:11.5px; font-weight:600; color:var(--petrol); line-height:1.2;}
  .dial-stats{display:grid; grid-template-columns:1fr 1fr; gap:18px;}
  .dial-stats .num{font-family:'Space Grotesk',sans-serif; font-size:26px; font-weight:700; color:var(--petrol);}
  .dial-stats .lbl{font-size:13px; opacity:0.65; margin-top:2px;}

  /* ---------- Services ---------- */
  .services{padding:90px 0; background:var(--paper); border-top:1px solid var(--line); border-bottom:1px solid var(--line);}
  .section-head{max-width:600px; margin-bottom:52px;}
  .section-head h2{font-size:clamp(28px,3.4vw,38px); font-weight:700; margin-bottom:14px;}
  .section-head p{color:var(--ink); opacity:0.75; font-size:16px;}
  .service-grid{display:grid; grid-template-columns:repeat(4,1fr); gap:22px;}
  .service-card{
    border:1px solid var(--line); border-radius:16px; padding:32px 28px;
    transition:border-color .2s, transform .2s, box-shadow .2s;
    position:relative; overflow:hidden;
  }
  .service-card::before{
    content:""; position:absolute; left:0; top:0; width:100%; height:4px;
  }
  .service-card.cool::before{background:var(--blue);}
  .service-card.pump::before{background:linear-gradient(90deg,var(--teal),var(--amber));}
  .service-card.vent::before{background:var(--teal);}
  .service-card.plan::before{background:var(--grad);}
  .service-card:hover{
    border-color:var(--teal); transform:translateY(-3px);
    box-shadow:0 12px 30px -15px rgba(22,48,74,0.18);
  }
  .service-icon{
    width:48px; height:48px; border-radius:12px; background:var(--mist);
    display:flex; align-items:center; justify-content:center; margin-bottom:22px;
  }
  .service-card h3{font-size:20px; margin-bottom:10px;}
  .service-card p{font-size:15px; opacity:0.75; margin-bottom:18px;}
  .service-card .link{font-size:14px; font-weight:600; color:var(--teal); display:inline-flex; align-items:center; gap:6px;}
  .service-card .link:hover{color:var(--petrol);}

  /* ---------- Waarom wij ---------- */
  .why{padding:90px 0;}
  .why .wrap{display:grid; grid-template-columns:0.9fr 1.1fr; gap:70px; align-items:center;}
  .why-visual{
    background:var(--petrol); border-radius:20px; padding:40px; color:var(--paper);
    position:relative; overflow:hidden;
  }
  .why-visual::after{
    content:""; position:absolute; right:-60px; bottom:-60px; width:200px; height:200px;
    border-radius:50%; background:radial-gradient(circle, var(--amber) 0%, transparent 70%); opacity:.45;
  }
  .why-visual h3{color:var(--paper); font-size:22px; margin-bottom:8px;}
  .why-visual p{opacity:.8; font-size:15px; margin-bottom:28px;}
  .founders{display:flex; gap:14px; align-items:center;}
  .founders .avatars{display:flex;}
  .founders .avatars span{
    width:44px;height:44px;border-radius:50%; border:2px solid var(--petrol);
    background:var(--amber-soft); display:flex; align-items:center; justify-content:center;
    font-family:'Space Grotesk',sans-serif; font-weight:700; color:var(--petrol); font-size:15px;
  }
  .founders .avatars span + span{margin-left:-12px;}
  .founders .txt{font-size:14px; opacity:.85;}
  .founders .txt strong{display:block; font-family:'Space Grotesk',sans-serif; font-size:15px;}

  .why-list{list-style:none;}
  .why-list li{
    display:flex; gap:16px; padding:20px 0; border-bottom:1px solid var(--line);
  }
  .why-list li:first-child{padding-top:0;}
  .why-list li:last-child{border-bottom:none;}
  .why-list .n{font-family:'IBM Plex Mono',monospace; color:var(--amber); font-weight:500; font-size:14px; padding-top:2px;}
  .why-list h4{font-size:16px; margin-bottom:4px; color:var(--petrol);}
  .why-list p{font-size:14.5px; opacity:.75;}

  /* ---------- Reviews ---------- */
  .reviews{padding:90px 0; background:var(--paper); border-top:1px solid var(--line); border-bottom:1px solid var(--line);}
  .review-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:22px;}
  .review-card{
    background:var(--mist); border-radius:16px; padding:26px;
  }
  .stars{color:var(--amber); font-size:14px; margin-bottom:14px; letter-spacing:2px;}
  .review-card p{font-size:14.5px; opacity:.85; margin-bottom:18px; min-height:80px;}
  .review-who{font-size:13px; font-weight:600; color:var(--petrol);}

  /* ---------- CTA / Contact ---------- */
  .cta{padding:100px 0; text-align:center;}
  .cta h2{font-size:clamp(28px,4vw,42px); max-width:640px; margin:0 auto 16px;}
  .cta p{opacity:.75; max-width:500px; margin:0 auto 36px; font-size:16px;}
  .cta-form{
    max-width:560px; margin:0 auto; background:var(--paper); border:1px solid var(--line);
    border-radius:18px; padding:32px; display:grid; gap:14px; text-align:left;
    box-shadow:0 20px 50px -30px rgba(14,59,67,0.25);
  }
  .cta-form .row{display:grid; grid-template-columns:1fr 1fr; gap:14px;}
  .cta-form label{font-size:13px; font-weight:600; color:var(--petrol); margin-bottom:6px; display:block;}
  .cta-form input, .cta-form select, .cta-form textarea{
    width:100%; border:1px solid var(--line); border-radius:9px; padding:12px 14px;
    font-family:'Inter',sans-serif; font-size:14.5px; background:var(--mist);
    transition:border-color .15s, background .15s;
  }
  .cta-form input:focus, .cta-form select:focus, .cta-form textarea:focus{
    outline:2px solid var(--teal); outline-offset:1px; background:var(--paper); border-color:transparent;
  }
  .cta-form button{
    background:var(--amber); color:var(--paper); font-weight:600; border:none;
    padding:15px; border-radius:9px; font-size:15px; cursor:pointer; margin-top:4px;
    transition:background .15s;
  }
  .cta-form button:hover{background:#5aad3a;}
  .form-note{font-size:12.5px; opacity:.6; text-align:center;}

  /* ---------- Footer ---------- */
  footer{background:var(--petrol); color:var(--paper); padding:60px 0 30px;}
  .footer-grid{display:grid; grid-template-columns:1.5fr 1fr 1fr 1fr; gap:40px; margin-bottom:50px;}
  .footer-grid .brand{color:var(--paper);}
  footer p.tag{opacity:.7; font-size:14px; margin-top:14px; max-width:300px; line-height:1.55;}
  footer h5{font-size:13px; text-transform:uppercase; letter-spacing:.06em; opacity:.55; margin-bottom:16px; font-weight:600;}
  footer ul{list-style:none;}
  footer ul li{margin-bottom:10px;}
  footer ul a{font-size:14.5px; opacity:.85; transition:opacity .15s, color .15s;}
  footer ul a:hover{opacity:1; color:var(--amber);}
  .footer-bottom{
    border-top:1px solid rgba(255,255,255,0.12); padding-top:24px;
    display:flex; justify-content:space-between; flex-wrap:wrap; gap:12px;
    font-size:13px; opacity:.55;
  }

  /* ---------- Responsive ---------- */
  @media (max-width:1080px) and (min-width:901px){
    .service-grid{grid-template-columns:repeat(2,1fr);}
  }
  @media (max-width:900px){
    nav ul, .nav-cta{display:none;}
    .burger{display:block;}
    .hero .wrap{grid-template-columns:1fr; gap:40px;}
    .hero{padding:56px 0 70px;}
    .service-grid{grid-template-columns:1fr;}
    .why .wrap{grid-template-columns:1fr; gap:40px;}
    .review-grid{grid-template-columns:1fr;}
    .footer-grid{grid-template-columns:1fr 1fr; gap:32px;}
    .cta-form .row{grid-template-columns:1fr;}
    .cta{padding:70px 0;}
  }
  @media (max-width:520px){
    .footer-grid{grid-template-columns:1fr;}
    .wrap{padding:0 20px;}
    .dial-card{padding:24px;}
  }