:root{--primary: #6366f1;--primary-soft: #eef2ff;--primary-border: #c7d2fe;--bg: #f6f7fb;--surface: #ffffff;--surface-muted: #f2f3f7;--border: #e6e8ef;--text: #16181d;--text-muted: #565c6d;--danger: #dc2626;--success: #16a34a;--warn: #d97706;--radius: 12px}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif;background:var(--bg);color:var(--text);font-size:14px;line-height:1.5}h1{font-size:22px;margin:0}h2{font-size:16px;margin:0}p{color:var(--text-muted);margin:4px 0 0}a{color:var(--primary)}.app-shell{display:flex;flex-direction:column;min-height:100vh}.topbar{display:flex;align-items:center;gap:12px;padding:0 28px;height:60px;background:var(--surface);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:10}.brand{display:flex;align-items:center;gap:10px;font-weight:650;font-size:15px}.brand-mark{width:30px;height:30px;border-radius:8px;background:var(--primary);color:#fff;display:grid;place-items:center;font-size:14px}.nav-link{text-decoration:none;color:var(--text-muted);font-size:13.5px;padding:6px 12px;border-radius:8px;font-weight:550}.nav-link:hover{background:var(--primary-soft);color:var(--primary)}.nav-link.active{color:var(--primary);background:var(--primary-soft)}.topbar-spacer{flex:1}.content{padding:28px;max-width:1200px;width:100%;margin:0 auto}.page-head{display:flex;align-items:flex-start;justify-content:space-between;margin-bottom:24px;gap:16px}.page-head .actions{display:flex;gap:10px}.btn{display:inline-flex;align-items:center;gap:7px;height:36px;padding:0 16px;border-radius:9px;border:1px solid var(--border);background:var(--surface);color:var(--text);font-size:13.5px;font-family:inherit;cursor:pointer;transition:all .15s;text-decoration:none}.btn:hover{border-color:var(--primary-border);background:var(--primary-soft)}.btn-primary{background:var(--primary);border-color:var(--primary);color:#fff}.btn-primary:hover{background:#4f46e5;border-color:#4f46e5;color:#fff}.btn-danger{color:var(--danger);border-color:#fecaca}.btn-danger:hover{background:#fef2f2;border-color:#fca5a5}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-icon{width:32px;height:32px;padding:0;justify-content:center}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:22px}.node-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:16px}.node-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:18px;display:flex;flex-direction:column;gap:12px;transition:border-color .15s,box-shadow .15s}.node-card:hover{border-color:var(--primary-border);box-shadow:0 8px 24px -16px #181e3c40}.node-card.offline{opacity:.65}.node-head{display:flex;align-items:center;gap:10px}.node-head .dot{width:10px;height:10px;border-radius:50%;flex-shrink:0}.dot-online{background:var(--success)}.dot-offline{background:#9ca3af}.dot-unknown{background:var(--warn)}.node-name{font-weight:650;font-size:15px;flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.node-url{font-size:12.5px;color:var(--text-muted);font-family:SF Mono,Consolas,monospace;word-break:break-all}.node-meta{font-size:12px;color:var(--text-muted);display:flex;gap:6px;align-items:center;flex-wrap:wrap}.node-remark{word-break:break-word;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.node-actions{display:flex;gap:6px;justify-content:flex-end;border-top:1px solid var(--border);padding-top:12px;margin-top:auto}.badge{display:inline-flex;align-items:center;gap:5px;font-size:12px;padding:2px 9px;border-radius:999px;font-weight:550}.badge-success{background:#dcfce7;color:#15803d}.badge-warn{background:#fef3c7;color:#b45309}.badge-neutral{background:var(--surface-muted);color:var(--text-muted)}.badge-info{background:var(--primary-soft);color:#4338ca}.field{margin-bottom:16px}.label{display:block;font-size:13px;font-weight:600;margin-bottom:6px}.req{color:var(--danger);margin-left:2px}.input,.select,.textarea{width:100%;height:38px;padding:0 12px;border:1px solid var(--border);border-radius:9px;font-size:13.5px;font-family:inherit;background:var(--surface);color:var(--text)}.textarea{height:auto;padding:10px 12px;resize:vertical}.input:focus,.select:focus,.textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-soft)}.hint{font-size:12px;color:var(--text-muted);margin-top:4px}.modal-scrim{position:fixed;top:0;right:0;bottom:0;left:0;background:#12162866;display:grid;place-items:center;z-index:100;padding:20px}.modal{background:var(--surface);border-radius:16px;width:100%;max-width:480px;max-height:90vh;overflow-y:auto;box-shadow:0 24px 60px -24px #12162880}.modal-head{padding:20px 24px 0}.modal-head h2{font-size:17px}.modal-body{padding:20px 24px}.modal-foot{display:flex;justify-content:flex-end;gap:10px;padding:0 24px 20px}.login-wrap{min-height:100vh;display:grid;place-items:center;background:linear-gradient(160deg,#eef2ff,#f6f7fb 60%)}.login-box{background:var(--surface);border:1px solid var(--border);border-radius:18px;padding:36px;width:100%;max-width:380px;box-shadow:0 24px 60px -30px #181e3c66}.login-box .brand{font-size:18px;justify-content:center;margin-bottom:6px}.login-box .subtitle{text-align:center;color:var(--text-muted);margin-bottom:24px;font-size:13px}.login-box .btn{width:100%;justify-content:center;height:40px;margin-top:4px}.empty{text-align:center;padding:60px 20px;color:var(--text-muted)}.empty .icon{font-size:40px;margin-bottom:12px}.alert{display:flex;align-items:flex-start;gap:8px;padding:10px 14px;border-radius:9px;font-size:13px}.alert-danger{background:#fef2f2;color:#b91c1c;border:1px solid #fecaca}.spinner{width:16px;height:16px;border:2px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin .7s linear infinite;display:inline-block}@keyframes spin{to{transform:rotate(360deg)}}.mono{font-family:SF Mono,Consolas,monospace}.user-chip{display:flex;align-items:center;gap:8px;padding-left:12px;border-left:1px solid var(--border)}.user-chip .user-name{font-size:13px;font-weight:550;max-width:160px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.table{width:100%;border-collapse:collapse}.table th,.table td{text-align:left;padding:12px 18px;border-bottom:1px solid var(--border);font-size:13px;vertical-align:middle}.table thead th{font-size:12px;font-weight:600;color:var(--text-muted);background:var(--surface-muted)}.table tbody tr:last-child td{border-bottom:none}.table tbody tr:hover{background:#fafbff}.user-cell-name{font-weight:550;display:flex;align-items:center;gap:6px}.user-cell-email{font-size:12px;color:var(--text-muted);font-family:SF Mono,Consolas,monospace;margin-top:2px}.row-actions{display:flex;gap:6px;justify-content:flex-end}.checkbox-row{display:flex;align-items:flex-start;gap:8px;font-size:13px;color:var(--text-muted);cursor:pointer;line-height:1.45}.checkbox-row input{margin:2px 0 0;width:15px;height:15px;accent-color:var(--primary);cursor:pointer}.stat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:16px}.stat-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px}.stat-label{font-size:13px;color:var(--text-muted)}.stat-value{font-size:30px;font-weight:700;margin-top:6px}