body{margin:0;font-family:Arial,sans-serif;background:#f7f5f0;color:#333}
.banner{width:100%}
.hero{height:70vh;background:url('haus.jpg') center/cover;display:flex}
.overlay{background:rgba(0,0,0,.35);width:100%;display:flex;flex-direction:column;justify-content:center;align-items:center;color:#fff}
.btn{background:#7b4d28;color:#fff;padding:14px 20px;border-radius:8px;text-decoration:none}
main{max-width:1100px;margin:auto;padding:30px}
.grid{display:grid;grid-template-columns:1fr 1fr;gap:25px}
.grid img{width:100%;border-radius:12px}
.tel{font-size:2rem}
@media(max-width:800px){.grid{grid-template-columns:1fr}}