:root{--bg: #0f1419;--surface: #1a2332;--surface2: #243044;--border: #2d3a4f;--text: #e8edf4;--muted: #8b9cb3;--accent: #3b82f6;--accent-dim: #2563eb33;--green: #10b981;--orange: #f59e0b;--red: #ef4444;--radius: 10px;font-family:system-ui,-apple-system,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg);color:var(--text);min-height:100vh;line-height:1.5}a{color:var(--accent);text-decoration:none}.layout{display:flex;min-height:100vh}.sidebar{width:220px;background:var(--surface);border-right:1px solid var(--border);padding:24px 16px;flex-shrink:0}.sidebar h1{font-size:15px;font-weight:700;margin-bottom:4px;letter-spacing:-.02em}.sidebar .sub{font-size:11px;color:var(--muted);margin-bottom:28px}.nav-link{display:block;padding:10px 12px;border-radius:8px;color:var(--muted);font-size:14px;margin-bottom:4px;transition:all .15s}.nav-link:hover{background:var(--surface2);color:var(--text)}.nav-link.active{background:var(--accent-dim);color:var(--accent);font-weight:500}.main{flex:1;padding:28px 32px;overflow:auto}.page-title{font-size:22px;font-weight:700;margin-bottom:24px;letter-spacing:-.03em}.stats-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:16px;margin-bottom:28px}.stat-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px}.stat-card .label{font-size:12px;color:var(--muted);margin-bottom:8px}.stat-card .value{font-size:26px;font-weight:700;letter-spacing:-.02em}.stat-card .hint{font-size:11px;color:var(--muted);margin-top:6px}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}.card-header{padding:16px 20px;border-bottom:1px solid var(--border);display:flex;justify-content:space-between;align-items:center}.card-header h2{font-size:15px;font-weight:600}table{width:100%;border-collapse:collapse;font-size:13px}th,td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--border)}th{color:var(--muted);font-weight:500;font-size:12px}tr:last-child td{border-bottom:none}tr:hover td{background:var(--surface2)}.badge{display:inline-block;padding:2px 8px;border-radius:20px;font-size:11px;font-weight:500}.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;border-radius:8px;border:none;font-size:13px;font-weight:500;cursor:pointer;transition:all .15s;font-family:inherit}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{background:#2563eb}.btn-ghost{background:transparent;color:var(--muted);border:1px solid var(--border)}.btn-ghost:hover{border-color:var(--accent);color:var(--accent)}.btn-sm{padding:5px 10px;font-size:12px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;padding:20px}.form-group{display:flex;flex-direction:column;gap:6px}.form-group.full{grid-column:1 / -1}.form-group label{font-size:12px;color:var(--muted)}.form-group input,.form-group select{background:var(--bg);border:1px solid var(--border);border-radius:8px;padding:10px 12px;color:var(--text);font-size:14px;font-family:inherit}.form-group input:focus,.form-group select:focus{outline:none;border-color:var(--accent)}.alert{padding:12px 16px;border-radius:8px;font-size:13px;margin-bottom:16px}.alert-info{background:#1e3a5f;border:1px solid #2563eb44;color:#93c5fd}.alert-warn{background:#422006;border:1px solid #f59e0b44;color:#fcd34d}.empty{padding:40px;text-align:center;color:var(--muted);font-size:14px}.mock-banner{position:fixed;bottom:16px;right:16px;background:#422006;border:1px solid #f59e0b55;color:#fcd34d;padding:10px 16px;border-radius:8px;font-size:12px;z-index:100}.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--bg)}.login-card{width:360px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:32px}.login-card h1{font-size:20px;margin-bottom:4px}.login-card .sub{color:var(--muted);font-size:13px;margin-bottom:24px}.login-hint{font-size:11px;color:var(--muted);text-align:center;margin-top:16px}.toolbar{display:flex;gap:12px;align-items:center;margin-bottom:20px;flex-wrap:wrap}.toolbar input,.toolbar select{background:var(--surface);border:1px solid var(--border);border-radius:8px;padding:8px 12px;color:var(--text);font-size:13px}.qr-box{background:#fff;color:#000;padding:16px;border-radius:8px;font-family:monospace;font-size:11px;word-break:break-all;max-height:200px;overflow:auto}.user-info{font-size:12px;color:var(--muted);margin-bottom:16px;padding:8px 12px;background:var(--surface2);border-radius:8px}.logout-btn{margin-top:20px;width:100%;justify-content:center}.sidebar nav{max-height:calc(100vh - 200px);overflow-y:auto}