*{
    margin:0;
    padding:0;
    box-sizing:border-box;
}

body{
    font-family:Arial,Helvetica,sans-serif;
    background:#f4f6f9;
    color:#222;
}

.topbar{
    display:flex;
    align-items:center;
    justify-content:space-between;
    background:#1f2937;
    color:white;
    padding:14px 24px;
    box-shadow:0 2px 8px rgba(0,0,0,.15);
}

.brand{
    display:flex;
    align-items:center;
    gap:12px;
}

.brand-icon{
    width:42px;
    height:42px;
    border-radius:10px;
    background:#2563eb;
    display:flex;
    align-items:center;
    justify-content:center;
    font-weight:bold;
    font-size:22px;
}

.brand span{
    display:block;
    color:#cfd8e3;
    font-size:12px;
}

.topnav{
    display:flex;
    gap:10px;
    flex-wrap:wrap;
}

.topnav a{
    color:white;
    text-decoration:none;
    padding:8px 14px;
    border-radius:8px;
    transition:.2s;
}

.topnav a:hover,
.topnav a.active{
    background:#2563eb;
}

.version{
    background:#374151;
    padding:8px 14px;
    border-radius:20px;
    font-weight:bold;
}

.content{
    max-width:1400px;
    margin:30px auto;
    padding:0 20px;
}

.header{
    margin-bottom:25px;
}

.header h1{
    font-size:34px;
    margin-bottom:6px;
}

.header p{
    color:#666;
}

.status-grid{
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:18px;
    margin-bottom:25px;
}

.status-card{
    background:white;
    border-radius:14px;
    padding:20px;
    box-shadow:0 4px 12px rgba(0,0,0,.08);
    border-left:8px solid #999;
}

.status-card.green{border-left-color:#16a34a;}
.status-card.orange{border-left-color:#f59e0b;}

.card{
    background:white;
    border-radius:14px;
    padding:24px;
    margin-bottom:24px;
    box-shadow:0 4px 12px rgba(0,0,0,.08);
}

.cards{
    display:grid;
    grid-template-columns:repeat(2,1fr);
    gap:20px;
    margin-bottom:24px;
}

.system-table{
    width:100%;
    border-collapse:collapse;
}

.system-table td{
    border-bottom:1px solid #e5e7eb;
    padding:10px 8px;
    vertical-align:top;
}

.system-table td:first-child{
    width:260px;
    font-weight:bold;
}

button{
    margin-top:16px;
    padding:10px 18px;
    border:none;
    border-radius:8px;
    background:#d1d5db;
    color:#555;
    cursor:not-allowed;
}

pre{
    white-space:pre-wrap;
    word-break:break-word;
}

ol{
    margin-left:22px;
    line-height:1.9;
}

@media(max-width:1100px){
    .status-grid{
        grid-template-columns:repeat(2,1fr);
    }

    .cards{
        grid-template-columns:1fr;
    }

    .topbar{
        flex-direction:column;
        gap:15px;
    }

    .topnav{
        justify-content:center;
    }
}