body{font-family:Arial,sans-serif;margin:0;background:#f5f7fa;color:#222}header{background:#17233c;color:#fff;padding:14px 24px;display:flex;justify-content:space-between}header a{color:#fff;margin-left:16px;text-decoration:none}main{max-width:1200px;margin:24px auto;padding:0 16px}.card{background:#fff;border:1px solid #ddd;border-radius:8px;padding:18px;margin-bottom:18px}table{width:100%;border-collapse:collapse;background:#fff}th,td{padding:10px;border-bottom:1px solid #ddd;text-align:left}input,select,textarea{width:100%;box-sizing:border-box;padding:9px;margin:5px 0 12px;border:1px solid #bbb;border-radius:5px}textarea{min-height:320px;font-family:Consolas,monospace}.btn,button{display:inline-block;background:#2457c5;color:#fff;border:0;padding:9px 14px;border-radius:5px;text-decoration:none;cursor:pointer}.btn.secondary{background:#555}.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:10px}.stat{background:#fff;border:1px solid #ddd;padding:14px;border-radius:7px}.ok{color:#187a2f}.bad{color:#a51f1f}.muted{color:#666;font-size:13px}iframe{width:100%;height:520px;border:1px solid #ccc;background:white}footer{text-align:center;color:#777;padding:30px}.grid2{display:grid;grid-template-columns:1fr 1fr;gap:16px}@media(max-width:800px){.grid2{grid-template-columns:1fr}header{display:block}header nav{margin-top:10px}header a{margin:0 12px 0 0}}