body{font-family:Arial,Helvetica,sans-serif;background:#f6f7fb;color:#222;margin:0;padding:20px;}
.wrap{max-width:980px;margin:0 auto;background:#fff;padding:18px;border-radius:6px;box-shadow:0 1px 4px rgba(0,0,0,0.05);}
header{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid #eee;padding-bottom:10px;margin-bottom:15px;}
nav{margin:12px 0;}
.card{background:#fff;padding:18px;border:1px solid #eee;border-radius:6px;}
label{display:block;margin:8px 0;}
input[type=text],input[type=password],input[type=number]{padding:6px;width:100%;max-width:380px;}
button{background:#1a73e8;color:#fff;border:0;padding:8px 12px;border-radius:4px;cursor:pointer;}
.table{width:100%;border-collapse:collapse;margin-top:12px;}
.table th,.table td{border:1px solid #eee;padding:8px;text-align:left;}
.error{background:#ffe6e6;padding:8px;border:1px solid #ff9b9b;color:#900;}
.success{background:#e6ffea;padding:8px;border:1px solid #9bffb3;color:#070;}
footer{margin-top:18px;color:#666;font-size:13px;}
.right{font-size:14px;color:#666;}