:root{
    --brand:#0D3B66;
    --brand-dark:#082645;
    --accent:#1669BD;
    --gray:#6B6F72;
    --ink:#1D2126;
    --ink-soft:#6B6F72;
    --bg:#FFFFFF;
    --bg-alt:#F1F3F5;
    --line:#DEE2E6;
    --card:#F6F7F8;
  }
  *{box-sizing:border-box;}
  body{margin:0; background:var(--bg); color:var(--ink); font-family:'Montserrat',sans-serif; font-weight:400; line-height:1.65;}
  h1,h2,h3{font-family:'Montserrat',sans-serif; font-weight:800; color:var(--brand); margin:0; letter-spacing:-0.01em;}
  .wrap{max-width:1120px; margin:0 auto; padding:0 32px;}
  a{color:inherit; text-decoration:none;}
  img{max-width:100%; display:block;}
  :focus-visible{outline:2px solid var(--accent); outline-offset:2px;}

  header{background:var(--brand); padding:0; position:sticky; top:0; z-index:500; box-shadow:0 2px 10px rgba(0,0,0,.12);}
  .nav-row{display:flex; align-items:center; justify-content:space-between; padding:14px 0; gap:16px;}
  .nav-row img.logo{height:46px;}
  nav{display:flex; gap:26px; font-size:14px;}
  nav a{color:#B9CBE0;}
  nav a.active{color:#fff; font-weight:600;}
  .cta-top{background:#fff; color:var(--brand); padding:9px 20px; border-radius:2px; font-size:14px; font-weight:600; display:inline-flex; align-items:center; gap:8px;}
  .cta-icon{display:none;}
  .nav-toggle{display:none; flex-direction:column; justify-content:center; align-items:center; gap:5px; width:44px; height:44px; background:transparent; border:none; cursor:pointer; padding:0;}
  .nav-toggle span{display:block; width:22px; height:2px; background:#fff;}

  section{padding:72px 0; scroll-margin-top:90px;}
  .eyebrow{font-size:13px; letter-spacing:.05em; color:var(--accent); text-transform:uppercase; margin-bottom:10px; display:block; font-weight:700;}

  /* hero */
  .hero{background:var(--bg-alt); padding:64px 0;}
  .hero-grid{display:grid; grid-template-columns:1.05fr 0.95fr; gap:48px; align-items:center;}
  .hero h1{font-size:44px; line-height:1.12; font-weight:800;}
  .hero p.sub{color:var(--ink-soft); font-size:16.5px; max-width:460px; margin-top:18px;}
  .hero-cta{margin-top:30px; display:flex; gap:14px; flex-wrap:wrap;}
  .btn{display:inline-flex; align-items:center; gap:8px; background:var(--brand); color:#fff; padding:13px 24px; border-radius:2px; font-weight:600; font-size:14px; border:none; cursor:pointer;}
  .btn.outline{background:transparent; color:var(--brand); border:1px solid var(--brand);}

  /* sortiment switcher (hero signature) */
  .switch-card{background:#10131A; border-radius:4px; padding:26px; color:#fff;}
  .switch-title{display:block; font-size:11px; letter-spacing:.08em; text-transform:uppercase; color:#8FA6C2; margin-bottom:18px; font-weight:700;}
  .switch-tabs{display:grid; grid-template-columns:repeat(4,1fr); gap:8px;}
  .switch-tab{background:#1B2029; border:1px solid #2A303B; border-radius:4px; padding:14px 6px; display:flex; flex-direction:column; align-items:center; gap:8px; cursor:pointer; color:#B9C2CE;}
  .switch-tab img{width:26px; height:26px; object-fit:contain;}
  .switch-tab svg{width:26px; height:26px;}
  .switch-tab span{font-size:10.5px; font-weight:600; text-align:center; line-height:1.2;}
  .switch-tab.active{background:var(--accent); border-color:var(--accent); color:#fff;}
  .switch-panel{background:#1B2029; border-radius:4px; padding:22px; margin-top:16px; height:150px; display:flex; flex-direction:column; justify-content:center; box-sizing:border-box;}
  .switch-panel .switch-panel-title{color:#fff; font-size:17px; margin:0 0 8px; font-weight:700;}
  .switch-panel p{color:#AEB8C4; font-size:13.5px; margin:0; line-height:1.55;}

  /* spec grid (vorteile intro not used here, kept for sortiment blurbs) */
  .spec-grid{display:grid; grid-template-columns:repeat(2,1fr); border-top:1px solid var(--line); border-left:1px solid var(--line); margin-top:30px;}
  .spec-item{border-right:1px solid var(--line); border-bottom:1px solid var(--line); padding:20px 24px; font-weight:600; font-size:15px;}
  .spec-item span{color:var(--accent); font-weight:700; margin-right:10px;}

  /* dial (vorteile) */
  .dial-wrap{position:relative; width:100%; max-width:300px; aspect-ratio:1/1; margin:50px auto 0;}
  .dial-ring{position:absolute; inset:0; width:100%; height:100%;}
  .dial-center{position:absolute; top:50%; left:50%; transform:translate(-50%,-50%); width:56%; height:56%; border-radius:50%; background:var(--card); border:1px solid var(--line); display:flex; flex-direction:column; align-items:center; justify-content:center; text-align:center; padding:14px;}
  .dial-center h3{font-size:16px; margin-bottom:6px; transition:opacity .2s;}
  .dial-center p{font-size:12px; color:var(--ink-soft); margin:0; line-height:1.4; transition:opacity .2s;}
  .dial-node{position:absolute; transform:translate(-50%,-50%); width:58px; height:58px; border-radius:50%; background:var(--brand); border:3px solid var(--bg); display:flex; align-items:center; justify-content:center; cursor:pointer; padding:0; z-index:2; transition:background .25s, transform .25s;}
  .dial-node svg{width:26px; height:26px; stroke:#fff; fill:none; stroke-width:1.8;}
  .dial-node:hover{transform:translate(-50%,-50%) scale(1.08);}
  .dial-node.active{background:var(--accent);}
  .dial-hint{text-align:center; font-size:12px; color:var(--ink-soft); margin-top:14px; font-style:italic;}

  /* sortiment - angebots-karten */
  .offer-grid{display:grid; grid-template-columns:repeat(4,1fr); gap:20px; margin-top:32px;}
  .offer-card{background:#fff; border:1px solid var(--line); border-radius:6px; overflow:hidden; display:flex; flex-direction:column;}
  .offer-media{height:130px; display:flex; align-items:center; justify-content:center; background:var(--brand);}
  .offer-media img{width:44px; height:44px; object-fit:contain;}
  .offer-body{padding:22px; display:flex; flex-direction:column; flex:1;}
  .offer-body h3{font-size:17px; color:var(--brand); margin-bottom:8px;}
  .offer-tagline{font-size:14px; font-weight:600; color:var(--ink); margin:0 0 14px;}
  .offer-list{margin:0 0 18px; padding-left:18px; flex:1;}
  .offer-list li{font-size:13px; color:var(--ink-soft); margin-bottom:7px; line-height:1.45;}
  .offer-cta{width:100%; justify-content:center; margin-top:auto;}

  /* kundenstimmen */
  .review-grid{display:grid; grid-template-columns:repeat(4,1fr); gap:16px; margin-top:32px;}
  .review-card{background:#fff; border:1px solid var(--line); border-radius:4px; padding:22px 20px;}
  .review-card .stars{color:var(--accent); font-size:15px; letter-spacing:2px; margin-bottom:12px;}
  .review-card p{font-size:13.5px; color:var(--ink); line-height:1.55; margin:0 0 14px;}
  .review-author{font-size:12.5px; font-weight:700; color:var(--brand);}

  /* markenpartner - endlos-schleife */
  .logo-marquee{overflow:hidden; margin-top:28px; -webkit-mask-image:linear-gradient(90deg,transparent,#000 6%,#000 94%,transparent); mask-image:linear-gradient(90deg,transparent,#000 6%,#000 94%,transparent);}
  .logo-track{display:flex; align-items:center; width:max-content; animation:logoScroll 40s linear infinite;}
  .logo-marquee:hover .logo-track{animation-play-state:paused;}
  .logo-slot{width:130px; height:56px; display:flex; align-items:center; justify-content:center; flex-shrink:0; padding:0 16px;}
  .logo-slot img{max-width:100%; max-height:100%; width:auto; height:auto; object-fit:contain;}
  @keyframes logoScroll{ from{transform:translateX(0);} to{transform:translateX(-50%);} }
  @media (prefers-reduced-motion: reduce){ .logo-track{animation:none;} }

  /* stepper */
  .stepper{position:relative; display:flex; margin-top:56px;}
  .stepper-track{position:absolute; top:32px; left:32px; right:32px; height:2px; background:var(--line); overflow:hidden;}
  .stepper-progress{position:absolute; inset:0; background:var(--brand); transform:scaleX(0); transform-origin:left; transition:transform 1.4s ease;}
  .stepper.filled .stepper-progress{transform:scaleX(1);}
  .step-node{flex:1; position:relative; z-index:1; display:flex; flex-direction:column; align-items:center; text-align:center; padding:0 8px; opacity:0; transform:translateY(10px); transition:opacity .5s ease, transform .5s ease;}
  .stepper.filled .step-node{opacity:1; transform:translateY(0);}
  .stepper.filled .step-node:nth-child(1){transition-delay:.05s;}
  .stepper.filled .step-node:nth-child(2){transition-delay:.25s;}
  .stepper.filled .step-node:nth-child(3){transition-delay:.45s;}
  .stepper.filled .step-node:nth-child(4){transition-delay:.65s;}
  .stepper.filled .step-node:nth-child(5){transition-delay:.85s;}
  .icon-badge{width:64px; height:64px; margin-bottom:12px; border-radius:50%; background:var(--brand); display:flex; align-items:center; justify-content:center;}
  .icon-badge svg{width:28px; height:28px; stroke:#fff; fill:none; stroke-width:1.8;}
  .step-num{font-size:11px; font-weight:700; color:var(--accent); letter-spacing:.05em; margin-bottom:6px;}
  .step-title{font-size:13px; font-weight:600; color:var(--ink); margin:0; max-width:150px;}
  @media (prefers-reduced-motion: reduce){ .stepper-progress,.step-node{transition:none;} }

  /* team */
  .team-grid{display:grid; grid-template-columns:repeat(2,1fr); gap:20px; margin-top:32px; max-width:480px;}
  .team-card{background:var(--card); padding:24px 18px; text-align:center; border-top:3px solid var(--brand);}
  .team-photo{width:72px; height:72px; border-radius:50%; background:#fff; display:flex; align-items:center; justify-content:center; margin:0 auto 14px; border:1px solid var(--line); overflow:hidden;}
  .team-photo svg{width:34px; height:34px; stroke:var(--brand); fill:none; stroke-width:1.6;}
  .team-photo img{width:100%; height:100%; object-fit:cover;}
  .team-card h3{font-size:16px; margin-bottom:4px;}
  .team-card .role{font-size:13px; color:var(--accent); font-weight:700; margin-bottom:10px;}
  .team-card .contact{font-size:12.5px; color:var(--ink-soft);}
  .team-hint{font-size:12.5px; color:var(--ink-soft); margin-top:18px; font-style:italic;}

  /* calculator */
  .calc-card{background:#fff; border:1px solid var(--line); padding:28px; margin-top:28px; max-width:640px;}
  .calc-row{display:grid; grid-template-columns:180px 1fr 100px; align-items:center; gap:16px; margin-bottom:20px;}
  .calc-row label{font-size:14px; font-weight:600;}
  .calc-row input[type=range]{width:100%; -webkit-appearance:none; height:4px; background:var(--line); border-radius:2px; outline:none;}
  .calc-row input[type=range]::-webkit-slider-thumb{-webkit-appearance:none; width:18px; height:18px; border-radius:50%; background:#fff; border:3px solid var(--brand); cursor:pointer;}
  .calc-row .mono{font-weight:600; font-size:14px; text-align:right;}
  .calc-result{display:grid; grid-template-columns:1fr 1fr; gap:1px; background:var(--line); border:1px solid var(--line); margin-top:8px;}
  .calc-result div{background:var(--card); padding:18px; text-align:center;}
  .calc-result .mono{display:block; font-size:22px; font-weight:700; color:var(--brand);}
  .calc-result .calc-cap{display:block; font-size:12px; color:var(--ink-soft); margin-top:4px;}
  .calc-note{font-size:12px; color:var(--ink-soft); margin-top:14px;}

  /* faq */
  .faq-list{margin-top:28px; max-width:760px; border-top:1px solid var(--line);}
  .faq-item{border-bottom:1px solid var(--line); padding:16px 0;}
  .faq-item summary{cursor:pointer; font-weight:600; font-size:15px; color:var(--brand); list-style:none;}
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary::before{content:"+"; margin-right:12px; color:var(--accent); font-weight:700;}
  .faq-item[open] summary::before{content:"–";}
  .faq-item p{font-size:14px; color:var(--ink-soft); margin:12px 0 0 22px;}

  /* callout */
  .callout{background:var(--brand); color:#fff; padding:40px; display:grid; grid-template-columns:1.4fr 1fr; gap:32px; align-items:center; margin-top:16px;}
  .callout h2{color:#fff; font-size:24px;}
  .callout p{color:#B9CBE0; margin-top:10px; font-size:14.5px;}
  .callout .btn{background:#fff; color:var(--brand);}

  /* form */
  .form-card{background:#fff; border:1px solid var(--line); padding:32px; margin-top:28px; max-width:640px;}
  .form-grid{display:grid; grid-template-columns:1fr 1fr; gap:16px;}
  .form-grid .full{grid-column:1/3;}
  .form-grid label{font-size:13px; font-weight:600; margin-bottom:6px; display:block;}
  .form-grid input,.form-grid select,.form-grid textarea{width:100%; padding:10px 12px; border:1px solid var(--line); font-family:'Montserrat',sans-serif; font-size:14px; background:#fff;}
  .form-grid textarea{resize:vertical; min-height:90px;}
  .form-note{font-size:12px; color:var(--ink-soft); margin-top:14px;}
  .form-success{display:none; background:var(--card); border-left:3px solid var(--brand); padding:14px 16px; margin-top:16px; font-size:14px;}
  .form-error{display:none; background:#FDEDEC; border-left:3px solid #C0392B; color:#8B2A20; padding:14px 16px; margin-top:16px; font-size:14px;}

  footer{background:var(--brand-dark); color:#B9CBE0; padding:48px 0; font-size:14px;}
  .foot-top{display:flex; align-items:center; margin-bottom:28px;}
  .foot-top img{height:40px;}
  .foot-grid{display:grid; grid-template-columns:repeat(4,1fr); gap:24px;}
  .foot-grid h3{font-size:12px; letter-spacing:.05em; text-transform:uppercase; color:#fff; margin-bottom:10px; font-weight:700;}
  .foot-grid a{color:#B9CBE0;}

  @media(max-width:900px){
    .hero-grid{grid-template-columns:1fr;}
    .spec-grid{grid-template-columns:1fr;}
    .team-grid{grid-template-columns:repeat(2,1fr);}
    .offer-grid{grid-template-columns:1fr 1fr;}
    .review-grid{grid-template-columns:1fr 1fr;}
    .callout{grid-template-columns:1fr;}
    .foot-grid{grid-template-columns:1fr;}
    .form-grid{grid-template-columns:1fr;}
    .form-grid .full{grid-column:1/2;}
    .calc-row{grid-template-columns:1fr; gap:8px;}
    .calc-row .mono{text-align:left;}
    .switch-tabs{grid-template-columns:repeat(2,1fr);}

    nav{z-index:500;}
    .cta-top{width:44px; height:44px; padding:0; justify-content:center; border-radius:50%; flex-shrink:0;}
    .cta-icon{display:block;}
    .cta-text{display:none;}
    .nav-row{gap:10px;}
    .nav-row img.logo{height:34px; flex-shrink:1; min-width:0;}
    .nav-row a:first-child{display:inline-flex; align-items:center; padding:5px 0; min-height:44px;}
    .nav-toggle{display:flex;}
    nav{
      position:absolute; top:100%; left:0; right:0; background:var(--brand);
      flex-direction:column; gap:0; max-height:0; overflow:hidden; transition:max-height .3s ease;
    }
    nav.open{max-height:320px;}
    nav a{padding:14px 32px; border-top:1px solid rgba(255,255,255,.15);}
    .stepper{flex-wrap:wrap; row-gap:36px;}
    .stepper-track{display:none;}
    .step-node{flex:0 0 50%;}
  }

  @media(max-width:600px){
    .offer-grid{grid-template-columns:1fr;}
    .team-grid{grid-template-columns:1fr; max-width:280px; margin-left:auto; margin-right:auto;}
    .switch-panel{height:auto; min-height:190px;}
    .hero h1{font-size:34px;}
    .step-node{flex:0 0 100%;}
    .calc-card, .form-card{padding:20px;}
  }

  /* rechtstexte (impressum, datenschutz) */
  .legal-hero{background:var(--bg-alt); padding:48px 0;}
  .legal-hero h1{font-size:32px;}
  .legal-content{padding:56px 0; max-width:760px; margin:0 auto;}
  .legal-content h2{font-size:20px; margin-top:36px; margin-bottom:12px;}
  .legal-content h2:first-child{margin-top:0;}
  .legal-content p{margin:0 0 14px; color:var(--ink);}
  .legal-content ul{margin:0 0 14px; padding-left:20px; color:var(--ink);}
  .legal-content li{margin-bottom:6px;}
  .legal-content a{color:var(--accent); text-decoration:underline;}
  .legal-placeholder{background:#FFF6E5; border:1px solid #F0D48A; padding:14px 16px; font-size:13.5px; color:#6B5A1E; margin:0 0 20px; border-radius:2px;}
  .back-link{display:inline-block; margin-bottom:24px; font-size:14px; font-weight:600; color:var(--brand);}