:root{
  --accent: #c40000; /* červená */
  --bg: #ffffff; /* bílá */
  --text: #111111; /* černá */
  --card: #f9f9f9;
  --radius: 10px;
  --maxw: 1000px;
  font-family: Inter, Roboto, system-ui, -apple-system, "Segoe UI", "Helvetica Neue", Arial;
}

*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased}
.container{max-width:var(--maxw);margin:0 auto;padding:24px}

.site-header{background:var(--text);color:var(--bg)}
.site-header .container{display:flex;align-items:center;justify-content:space-between}
.brand{margin:0;padding:18px 0;font-size:20px;color:var(--bg)}
.nav a{margin-left:16px;color:var(--bg);text-decoration:none}
.hero{background:linear-gradient(180deg, rgba(196,0,0,0.12), rgba(0,0,0,0.01));padding:40px 0;border-radius:0 0 16px 16px;text-align:center}
.hero h2{margin:0 0 10px;font-size:28px}
.cta{display:inline-block;margin-top:12px;padding:10px 18px;background:var(--accent);color:white;border-radius:8px;text-decoration:none}

.services h3,.about h3,.contact h3{margin-top:0}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin-top:12px}
.card{background:var(--card);padding:16px;border-radius:var(--radius);box-shadow:0 6px 18px rgba(15,30,50,0.06)}
.contact-form{display:grid;gap:8px;max-width:520px;margin-top:12px}
.contact-form input,.contact-form textarea{padding:10px;border-radius:8px;border:1px solid #ddd;font-size:14px;width:100%}
.contact-form button{padding:10px;border-radius:8px;border:0;background:var(--accent);color:#fff;font-weight:600}

.site-footer{padding:18px 0;margin-top:28px;text-align:center;color:#555;font-size:14px}
@media (max-width:600px){
  .site-header .container{flex-direction:column;align-items:flex-start}
  .nav{margin-top:6px}
}