*{margin:0;padding:0;box-sizing:border-box}body{font-family:Arial,sans-serif;line-height:1.6;color:#333}.container{max-width:1200px;margin:0 auto;padding:0 20px}header{background:#0066cc;color:#fff;padding:1rem 0}header .container{display:flex;justify-content:space-between;align-items:center}nav ul{list-style:none;display:flex;gap:2rem}nav a{color:#fff;text-decoration:none;font-weight:500}nav a:hover{text-decoration:underline}.hero{padding:4rem 0;background:#f5f5f5;text-align:center}.hero h1{font-size:2.5rem;margin-bottom:1rem}.btn{display:inline-block;padding:0.75rem 1.5rem;background:#0066cc;color:#fff;text-decoration:none;border-radius:5px;border:none;cursor:pointer}.btn:hover{background:#0052a3}.services,.about{padding:4rem 0}.services h2,.about h2{text-align:center;margin-bottom:2rem}.service-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:2rem}.service-card{padding:2rem;background:#f9f9f9;border-radius:8px}.contact-form{max-width:600px;margin:0 auto;padding:2rem}.form-group{margin-bottom:1.5rem}.form-group label{display:block;margin-bottom:0.5rem;font-weight:600}.form-control{width:100%;padding:0.75rem;border:1px solid #ddd;border-radius:4px;font-size:1rem}.form-control:focus{outline:none;border-color:#0066cc}.error{color:#d00;font-size:0.875rem;margin-top:0.25rem}.alert{padding:1rem;border-radius:4px;margin-bottom:1rem}.alert-success{background:#d4edda;color:#155724}.alert-error{background:#f8d7da;color:#721c24}footer{background:#333;color:#fff;padding:2rem 0;text-align:center}@media(max-width:768px){nav ul{flex-direction:column;gap:1rem}.hero h1{font-size:2rem}.service-grid{grid-template-columns:1fr}}