body{margin:0;font-family:Arial;background:#f4f7fb;color:#243447}header{background:#071a2d;color:white;padding:20px}main{max-width:900px;margin:30px auto;padding:20px}.stats div,section{background:white;padding:20px;border-radius:10px;margin:20px 0;box-shadow:0 2px 8px #0001}.stats b{font-size:32px;color:#1267d6}input{padding:12px;margin:5px;border:1px solid #ddd;border-radius:5px}button{padding:12px 20px;background:#1267d6;color:white;border:0;border-radius:5px}table{width:100%;margin-top:15px}td{padding:10px;border-bottom:1px solid #eee}