body{font-family:Arial,sans-serif;margin:0;padding:0;background:#fff;color:#111;line-height:1.6}
header{background:#0f172a;color:#fff;padding:20px}
nav a{margin-right:15px;color:#fff;text-decoration:none}
nav a:hover{text-decoration:underline}
.container{max-width:1000px;margin:0 auto;padding:20px}
h1{color:#0f172a}
h2{margin-top:1.2em}
.card{border:1px solid #ddd;padding:15px;border-radius:8px;margin-bottom:20px;background:#fafafa}
footer{background:#f1f1f1;color:#333;text-align:center;padding:20px;margin-top:40px;font-size:14px}
ul{margin:0;padding-left:20px}
form{display:grid;gap:10px;max-width:400px}
input,textarea{padding:8px;border:1px solid #ccc;border-radius:6px}
button{background:#0f172a;color:#fff;padding:10px;border:none;border-radius:6px;cursor:pointer}
button:hover{opacity:0.9}