body{margin:0;font-family:Arial;background:#0f0f0f;color:#fff}
header{background:#111;padding:20px;display:flex;justify-content:space-between;align-items:center}
nav a{color:white;margin:0 10px;text-decoration:none}
.logo{font-weight:bold}
.hero{padding:100px;text-align:center;background:url('https://picsum.photos/1600/900?construction') center/cover}
.btn{background:#e10600;color:white;padding:14px 25px;text-decoration:none;border-radius:5px;border:none}
.section{padding:60px}
.dark{background:#181818}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:20px}
.card{background:#222;padding:25px;text-align:center}
.gallery{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:15px}
.gallery img{width:100%}
form{max-width:500px;margin:auto;display:flex;flex-direction:column;gap:10px}
input,textarea{padding:12px;border-radius:5px;border:none}
footer{text-align:center;padding:20px;background:#000}