:root{--primary: #2563eb;--primary-dark: #1d4ed8;--success: #16a34a;--warning: #d97706;--danger: #dc2626;--bg: #f5f7fa;--card: #ffffff;--border: #e5e7eb;--text: #1f2937;--muted: #6b7280;--radius: 10px}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Microsoft YaHei,sans-serif;background:var(--bg);color:var(--text);font-size:14px}#root{min-height:100vh}h1,h2,h3,h4{margin:0 0 12px;font-weight:600}h2{font-size:20px}h3{font-size:16px}h4{font-size:14px}.layout{display:flex;min-height:100vh}.sidebar{width:210px;background:#fff;border-right:1px solid var(--border);padding:16px 0;flex-shrink:0}.sidebar .brand{padding:0 16px 14px;font-weight:700;font-size:15px;color:var(--primary);border-bottom:1px solid var(--border);margin-bottom:10px}.sidebar a{display:block;padding:9px 16px;color:var(--text);text-decoration:none;font-size:13.5px;border-left:3px solid transparent}.sidebar a:hover{background:#f0f5ff}.sidebar a.active{background:#eff6ff;color:var(--primary);border-left-color:var(--primary);font-weight:600}.sidebar .sec{padding:12px 16px 4px;font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:.5px}.main{flex:1;padding:20px 24px;overflow-x:hidden}.topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px}.topbar .who{font-size:13px;color:var(--muted)}.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:16px;margin-bottom:16px}.grid2{display:grid;grid-template-columns:1fr 1fr;gap:16px}.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.row.end{justify-content:flex-end}.spacer{flex:1}.btn{background:var(--primary);color:#fff;border:none;border-radius:6px;padding:7px 14px;font-size:13px;cursor:pointer;font-family:inherit}.btn:hover{background:var(--primary-dark)}.btn:disabled{background:#9ca3af;cursor:not-allowed}.btn.sec{background:#fff;color:var(--text);border:1px solid var(--border)}.btn.sec:hover{background:#f3f4f6}.btn.ok{background:var(--success)}.btn.warn{background:var(--warning)}.btn.danger{background:var(--danger)}.btn.sm{padding:4px 9px;font-size:12px}input,select,textarea{padding:7px 9px;border:1px solid var(--border);border-radius:6px;font-size:13px;font-family:inherit;background:#fff;color:var(--text)}input:focus,select:focus,textarea:focus{outline:none;border-color:var(--primary)}label{font-size:12.5px;color:var(--muted);display:block;margin-bottom:4px}.field{margin-bottom:10px}.table{width:100%;border-collapse:collapse;font-size:13px}.table th,.table td{border-bottom:1px solid var(--border);padding:8px 10px;text-align:left;vertical-align:middle}.table th{background:#f9fafb;font-weight:600;color:var(--muted);font-size:12.5px}.table tr:hover td{background:#fafbfc}.badge{display:inline-block;padding:2px 8px;border-radius:10px;font-size:11.5px;font-weight:600}.badge.gray{background:#f3f4f6;color:#6b7280}.badge.blue{background:#dbeafe;color:#1d4ed8}.badge.green{background:#dcfce7;color:#15803d}.badge.orange{background:#ffedd5;color:#c2410c}.badge.red{background:#fee2e2;color:#b91c1c}.msg{padding:9px 12px;border-radius:6px;margin-bottom:12px;font-size:13px}.msg.err{background:#fef2f2;color:#b91c1c;border:1px solid #fecaca}.msg.ok{background:#f0fdf4;color:#15803d;border:1px solid #bbf7d0}.msg.info{background:#eff6ff;color:#1d4ed8;border:1px solid #bfdbfe}.muted{color:var(--muted);font-size:12.5px}.stat{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:12px 14px}.stat .k{font-size:12px;color:var(--muted)}.stat .v{font-size:21px;font-weight:700;margin-top:3px}.bar{height:8px;background:#e5e7eb;border-radius:4px;overflow:hidden;position:relative}.bar>i{display:block;height:100%;background:var(--primary)}.bar>i.ok{background:var(--success)}.bar>i.warn{background:var(--warning)}.stereo{background:#fbfcfe;border:1px solid var(--border);border-radius:8px;padding:12px;max-height:560px;overflow:auto}.floor-row{display:flex;align-items:center;gap:6px;margin-bottom:4px}.floor-tag{width:44px;font-size:11px;color:var(--muted);text-align:right;flex-shrink:0}.cell{min-width:52px;padding:5px 6px;border:1px solid #d8dee9;border-radius:4px;background:#fff;font-size:11px;text-align:center;cursor:pointer;line-height:1.35}.cell:hover{border-color:var(--primary)}.cell .lb{font-weight:600}.cell .ar{font-size:10px;color:var(--muted)}.cell.empty{background:#fff}.cell.claimed{background:#dbeafe;border-color:#93c5fd}.cell.signed{background:#dcfce7;border-color:#86efac}.cell.merged{background:#fef3c7;border-color:#fcd34d}.cell.sel{outline:2px solid var(--primary);outline-offset:1px}.cell.hidden{display:none}.unit-sep{width:8px}.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#eff6ff,#f5f7fa)}.login-box{background:#fff;border-radius:14px;padding:30px;width:380px;box-shadow:0 8px 30px #00000012}.login-box h1{font-size:21px;color:var(--primary);margin-bottom:6px}.tabs{display:flex;gap:6px;margin-bottom:16px}.tabs button{flex:1;padding:8px;border:1px solid var(--border);background:#fff;border-radius:6px;cursor:pointer;font-size:13px;font-family:inherit}.tabs button.on{background:var(--primary);color:#fff;border-color:var(--primary)}pre.doc{white-space:pre-wrap;background:#f9fafb;border:1px solid var(--border);border-radius:8px;padding:12px;font-size:12.5px;max-height:340px;overflow:auto;font-family:inherit;line-height:1.7}.step{border-left:3px solid var(--border);padding-left:12px;margin-bottom:14px}.step.done{border-left-color:var(--success)}.step.active{border-left-color:var(--primary)}@media (max-width: 900px){.grid2,.grid3,.grid4{grid-template-columns:1fr}.layout{flex-direction:column}.sidebar{width:100%;border-right:none;border-bottom:1px solid var(--border)}}