*{margin:0;padding:0;box-sizing:border-box}
body{background:#f5f5f5;font-size:14px;color:#333}
.container{max-width:1200px;margin:20px auto;padding:0 15px}
.card{background:#fff;border-radius:8px;padding:20px;margin-bottom:20px}
.table{width:100%;border-collapse:collapse;margin-top:10px}
.table th,.table td{padding:10px;text-align:left;border-bottom:1px solid #eee}
.btn{padding:6px 12px;background:#1677ff;color:#fff;border:none;border-radius:4px;cursor:pointer}
.btn.del{background:#ff4d4f}
.form-item{margin-bottom:15px}
.form-item label{display:block;margin-bottom:5px}
.form-item input,.form-item select{width:100%;padding:8px;border:1px solid #ddd;border-radius:4px}
.login-box{max-width:400px;margin:100px auto}