:root{--accent:#2563eb;--bg:#fafafa;--card:#fff;--border:#eee;--text:#111}
*{box-sizing:border-box}
body{font-family:ui-sans-serif,system-ui,Segoe UI,Roboto,Arial;margin:0;background:var(--bg);color:var(--text)}
header{display:flex;justify-content:space-between;align-items:center;padding:16px 24px;border-bottom:1px solid var(--border);background:#fff;position:sticky;top:0}
a{color:var(--accent);text-decoration:none}
nav a{margin-left:12px}
.container{max-width:980px;margin:24px auto;padding:0 16px}
.card{border:1px solid var(--border);border-radius:16px;padding:18px 20px;margin:16px 0;box-shadow:0 1px 12px rgba(0,0,0,.03);background:var(--card)}
.btn{display:inline-block;padding:10px 14px;border-radius:12px;background:var(--accent);color:#fff;border:none;cursor:pointer}
.btn.secondary{background:#111}
input{width:100%;padding:10px 12px;border:1px solid #ddd;border-radius:12px;background:#fff}
label{display:block;font-weight:650;margin:10px 0 6px}
.table{width:100%;border-collapse:collapse}
.table th,.table td{padding:10px;border-bottom:1px solid var(--border);text-align:left;vertical-align:top}
.badge{display:inline-block;padding:4px 10px;border-radius:999px;font-size:12px;background:#eef;color:#334}
.badge.online{background:#dcfce7;color:#166534}
.badge.offline{background:#fee2e2;color:#991b1b}
pre{background:#0b1020;color:#e6eaff;padding:12px;border-radius:12px;overflow:auto}
small{color:#666}