@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Inter:wght@400;500;600;700;800&display=swap');
*{box-sizing:border-box;margin:0;padding:0}
  :root{
    --bg:#0a0e1a;--surface:#121829;--card:#1a2238;--border:#2a3352;
    --text:#e8ecf5;--muted:#9ca8c4;--accent:#f5a623;--accent-dim:#d48e1e;
    --ok:#4ade80;--warn:#fbbf24;--crit:#ef4444;
    --font-sans:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
    --font-display:'Space Grotesk','Inter',-apple-system,sans-serif;
  }
  html{scroll-behavior:smooth}
  body{
    font-family:var(--font-sans);
    background:var(--bg);color:var(--text);line-height:1.6;font-size:16px;
    -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
  }
  h1,h2,h3,.site-nav__brand{font-family:var(--font-display)}
  .container{max-width:1160px;margin:0 auto;padding:0 24px}
  a{color:var(--accent);text-decoration:none}
  a:hover{color:#fff}

  /* ===== Reusable site nav component (v2 2026-04-21) ===== */
  .site-nav{
    position:sticky;top:0;z-index:50;
    backdrop-filter:saturate(180%) blur(14px);
    -webkit-backdrop-filter:saturate(180%) blur(14px);
    background:rgba(10,14,26,.72);
    border-bottom:1px solid rgba(255,255,255,.06);
  }
  .site-nav__inner{
    max-width:1200px;margin:0 auto;padding:14px 24px;
    display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:32px;
  }
  .site-nav__brand{
    display:inline-flex;align-items:center;gap:10px;
    font-family:var(--font-display);
    font-weight:700;font-size:22px;letter-spacing:-.6px;
    color:var(--text);text-decoration:none;line-height:1;white-space:nowrap;
  }
  .site-nav__brand:hover{color:var(--text)}
  .site-nav__brand .site-nav__mark{
    width:28px;height:28px;flex-shrink:0;display:inline-block;
  }
  .site-nav__brand .wordmark{letter-spacing:-.8px}
  .site-nav__brand .wordmark em{color:var(--accent);font-style:normal}

  .site-nav__links{display:flex;align-items:center;gap:4px;justify-content:center}
  .site-nav__links a{
    color:var(--muted);font-size:14px;font-weight:500;
    padding:8px 12px;border-radius:8px;
    text-decoration:none;transition:color .15s, background .15s;
  }
  .site-nav__links a:hover{color:var(--text);background:rgba(255,255,255,.04)}
  .site-nav__links a.is-active{color:var(--text);background:rgba(255,255,255,.06)}
  .site-nav__links .divider{width:1px;height:18px;background:rgba(255,255,255,.1);margin:0 8px}
  .site-nav__links a.lang{
    font-size:12px;font-weight:600;letter-spacing:.8px;
    border:1px solid rgba(255,255,255,.12);padding:4px 10px;
  }

  .site-nav__cta{display:flex;align-items:center;gap:10px}
  .site-nav__tel{
    display:inline-flex;align-items:center;gap:6px;
    color:var(--text);font-size:14px;font-weight:600;letter-spacing:.2px;
    padding:8px 14px;border-radius:10px;
    background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.08);
    text-decoration:none;transition:background .15s, border-color .15s;
  }
  .site-nav__tel:hover{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.16);color:var(--text)}
  .site-nav__tel .icon{font-size:13px;opacity:.85}

  .site-nav__primary{
    display:inline-flex;align-items:center;gap:8px;
    background:var(--accent);color:#0a0e1a;
    padding:10px 18px;border-radius:10px;
    font-weight:600;font-size:14px;text-decoration:none;
    transition:transform .1s ease, box-shadow .15s;
    box-shadow:0 4px 14px rgba(245,166,35,.25);
  }
  .site-nav__primary:hover{transform:translateY(-1px);color:#0a0e1a;box-shadow:0 8px 20px rgba(245,166,35,.35)}
  .site-nav__primary::after{content:'→';font-weight:400;opacity:.75}

  .site-nav__toggle{display:none;background:none;border:0;cursor:pointer;padding:10px;color:var(--text)}
  .site-nav__toggle span{display:block;width:22px;height:2px;background:currentColor;margin:4px 0;transition:transform .2s, opacity .2s}
  .site-nav[data-open="true"] .site-nav__toggle span:nth-child(1){transform:translateY(6px) rotate(45deg)}
  .site-nav[data-open="true"] .site-nav__toggle span:nth-child(2){opacity:0}
  .site-nav[data-open="true"] .site-nav__toggle span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

  @media(max-width:960px){
    .site-nav__inner{grid-template-columns:auto auto;gap:8px}
    .site-nav__toggle{display:block;justify-self:end}
    .site-nav__links,.site-nav__cta{
      grid-column:1 / -1;flex-direction:column;align-items:stretch;gap:4px;
      max-height:0;overflow:hidden;transition:max-height .25s ease;
    }
    .site-nav__cta{flex-direction:row;justify-content:flex-end;padding-top:8px}
    .site-nav[data-open="true"] .site-nav__links{max-height:500px;padding:8px 0}
    .site-nav[data-open="true"] .site-nav__cta{max-height:200px}
    .site-nav__links a{padding:12px 14px;font-size:15px}
    .site-nav__links .divider{display:none}
    .site-nav__tel{flex:1;justify-content:center}
    .site-nav__primary{flex:1;justify-content:center}
  }

  /* ===== Legacy fallback (staré inline markup) ===== */
  nav:not(.site-nav){
    position:sticky;top:0;z-index:10;backdrop-filter:blur(12px);
    background:rgba(10,14,26,.8);border-bottom:1px solid var(--border);padding:16px 0;
  }
  nav:not(.site-nav) .container{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
  .logo{font-weight:700;font-size:18px;letter-spacing:-.3px}
  .logo span{color:var(--accent)}
  .cta-btn{
    background:var(--accent);color:#0a0e1a;padding:10px 20px;border-radius:10px;
    font-weight:600;font-size:14px;border:none;cursor:pointer;text-decoration:none;
    transition:transform .1s, box-shadow .15s;
    box-shadow:0 4px 14px rgba(245,166,35,.25);
  }
  .cta-btn:hover{transform:translateY(-1px);color:#0a0e1a;box-shadow:0 8px 20px rgba(245,166,35,.35)}

  /* Hero */
  .hero{padding:80px 0 100px;background:radial-gradient(ellipse at top,rgba(245,166,35,.08),transparent 50%);overflow:hidden}
  .hero .container{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
  @media(max-width:900px){.hero .container{grid-template-columns:1fr;gap:40px}}
  .hero h1{
    font-size:clamp(32px,4.5vw,52px);font-weight:800;letter-spacing:-1.2px;
    line-height:1.05;margin-bottom:24px;
  }
  .hero h1 em{color:var(--accent);font-style:normal}
  .hero .lead{font-size:19px;color:var(--muted);margin-bottom:36px}
  .hero-actions{display:flex;gap:16px;flex-wrap:wrap}
  .hero-visual{position:relative;border-radius:16px;overflow:hidden;border:1px solid var(--border);box-shadow:0 20px 60px rgba(0,0,0,.4)}
  .hero-visual img{width:100%;height:auto;display:block}
  .hero-visual::after{
    content:'AI LIVE';position:absolute;top:16px;right:16px;
    background:var(--accent);color:#0a0e1a;padding:6px 12px;border-radius:6px;
    font-size:11px;font-weight:700;letter-spacing:1px;
    box-shadow:0 4px 16px rgba(245,166,35,.4);
  }
  .hero-caption{
    position:absolute;bottom:0;left:0;right:0;padding:16px 20px;
    background:linear-gradient(transparent,rgba(0,0,0,.85));
    color:#fff;font-size:13px;font-weight:500;
  }
  .secondary-btn{
    background:transparent;color:var(--text);padding:10px 20px;border-radius:8px;
    border:1px solid var(--border);font-weight:500;font-size:14px;
  }
  .secondary-btn:hover{border-color:var(--accent);color:var(--accent)}

  /* Stats strip */
  .stats{padding:40px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
  .stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:32px;text-align:center}
  .stat-num{font-size:36px;font-weight:800;color:var(--accent);letter-spacing:-1px}
  .stat-label{font-size:13px;color:var(--muted);margin-top:4px}

  /* Sections */
  section{padding:80px 0}
  .section-tag{
    display:inline-block;color:var(--accent);font-size:12px;font-weight:600;
    text-transform:uppercase;letter-spacing:1.5px;margin-bottom:12px;
  }
  h2{font-size:clamp(26px,3vw,36px);font-weight:700;letter-spacing:-.6px;margin-bottom:16px;max-width:720px}
  h3{font-size:20px;font-weight:600;margin-bottom:10px}
  .section-lead{color:var(--muted);max-width:720px;margin-bottom:48px;font-size:17px}

  /* Problem list */
  .problem-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px}
  .problem-card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:24px}
  .problem-card .num{
    font-size:32px;font-weight:800;color:var(--crit);letter-spacing:-1px;
    display:block;margin-bottom:8px;
  }
  .problem-card p{color:var(--muted);font-size:14px}

  /* Gallery (AI detection proofs) */
  .gallery{background:var(--surface);padding:72px 0}
  .gallery-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:20px;margin-top:32px}
  .gallery-card{background:var(--card);border:1px solid var(--border);border-radius:12px;overflow:hidden}
  .gallery-card img{width:100%;aspect-ratio:4/3;object-fit:cover;display:block}
  .gallery-card .caption{padding:16px 20px}
  .gallery-card h4{font-size:15px;font-weight:600;margin-bottom:4px;color:var(--text)}
  .gallery-card p{font-size:13px;color:var(--muted)}

  /* How it works */
  .how-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px}
  .how-card{
    background:var(--card);border:1px solid var(--border);border-radius:12px;padding:28px;
    position:relative;
  }
  .how-card .step{
    position:absolute;top:-14px;left:24px;background:var(--accent);color:#0a0e1a;
    width:28px;height:28px;border-radius:50%;display:flex;align-items:center;
    justify-content:center;font-weight:800;font-size:14px;
  }
  .how-card p{color:var(--muted);font-size:14px;margin-top:8px}

  /* Comparison */
  .compare{background:var(--surface)}
  table{width:100%;border-collapse:collapse;margin-top:24px;font-size:14px}
  th,td{padding:14px 16px;text-align:left;border-bottom:1px solid var(--border)}
  th{color:var(--muted);font-weight:600;font-size:12px;text-transform:uppercase;letter-spacing:.5px}
  td.yes{color:var(--ok);font-weight:600}
  td.no{color:var(--muted)}
  tr:last-child td{border-bottom:none}
  tr.us{background:rgba(245,166,35,.06)}

  /* Pilot CTA */
  .pilot{background:linear-gradient(135deg,rgba(245,166,35,.12),rgba(74,222,128,.06));padding:72px 0}
  .pilot-inner{text-align:center;max-width:720px;margin:0 auto}
  .pilot .badge{
    display:inline-block;background:rgba(245,166,35,.18);color:var(--accent);
    padding:6px 14px;border-radius:20px;font-size:12px;font-weight:600;
    text-transform:uppercase;letter-spacing:1px;margin-bottom:20px;
  }
  .pilot h2{margin:0 auto 16px}
  .pilot p{color:var(--muted);margin-bottom:32px;font-size:17px}

  /* Form */
  form{max-width:480px;margin:0 auto;display:flex;flex-direction:column;gap:12px;text-align:left}
  label{font-size:13px;color:var(--muted);font-weight:500}
  input,textarea{
    background:var(--card);border:1px solid var(--border);border-radius:8px;
    padding:12px 14px;color:var(--text);font-size:14px;font-family:inherit;
    transition:border-color .2s;
  }
  input:focus,textarea:focus{outline:none;border-color:var(--accent)}
  textarea{min-height:80px;resize:vertical}
  form .cta-btn{margin-top:8px;padding:14px;font-size:15px}
  .form-msg{padding:12px;border-radius:8px;font-size:14px;display:none}
  .form-msg.ok{display:block;background:rgba(74,222,128,.1);color:var(--ok);border:1px solid rgba(74,222,128,.3)}
  .form-msg.err{display:block;background:rgba(239,68,68,.1);color:var(--crit);border:1px solid rgba(239,68,68,.3)}

  /* Footer */
  footer{padding:40px 0;border-top:1px solid var(--border);color:var(--muted);font-size:13px;text-align:center}
  footer a{color:var(--muted)}

  @media(max-width:640px){
    nav ul{display:none}
    .hero{padding:48px 0 64px}
    section{padding:56px 0}
  }