*,:before,:after{box-sizing:border-box;margin:0;padding:0}:root{--bg:#f8f9fa;--surface:#fff;--text:#1a1a1a;--text-secondary:#6b7280;--border:#e5e7eb;--primary:#2563eb;--primary-hover:#1d4ed8;--primary-text:#fff;--success:#16a34a;--danger:#dc2626;--danger-hover:#b91c1c;--radius:8px;--radius-lg:12px;--shadow:0 1px 3px #0000001a;color:var(--text);background:var(--bg);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;font-size:15px;line-height:1.5}body{min-height:100vh}button{cursor:pointer;font-family:inherit;font-size:inherit}input,textarea,select{font-family:inherit;font-size:inherit}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow);padding:20px}.btn{border-radius:var(--radius);border:none;align-items:center;gap:6px;padding:8px 16px;font-size:14px;font-weight:500;transition:background .15s;display:inline-flex}.btn-primary{background:var(--primary);color:var(--primary-text)}.btn-primary:hover{background:var(--primary-hover)}.btn-danger{background:var(--danger);color:#fff}.btn-danger:hover{background:var(--danger-hover)}.btn-ghost{color:var(--text-secondary);border:1px solid var(--border);background:0 0}.btn-ghost:hover{background:var(--bg)}.input{border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);width:100%;color:var(--text);outline:none;padding:10px 12px}.input:focus{border-color:var(--primary);box-shadow:0 0 0 2px #2563eb26}.label{color:var(--text-secondary);margin-bottom:4px;font-size:13px;font-weight:600;display:block}.layout{min-height:100vh;display:flex}.sidebar{background:var(--surface);border-right:1px solid var(--border);flex-shrink:0;width:220px;padding:20px 0}.sidebar-item{text-align:left;width:100%;color:var(--text-secondary);cursor:pointer;background:0 0;border:none;padding:10px 20px;font-size:14px;font-weight:500;transition:background .1s,color .1s;display:block}.sidebar-item:hover{background:var(--bg)}.sidebar-item.active{color:var(--primary);border-right:2px solid var(--primary);background:#2563eb0f}.content{flex:1;max-width:960px;padding:24px 32px}.page-header{justify-content:space-between;align-items:center;margin-bottom:24px;display:flex}.page-title{font-size:22px;font-weight:700}.stat-grid{grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:16px;margin-bottom:24px;display:grid}.stat-card{text-align:center;padding:16px}.stat-value{color:var(--primary);font-size:28px;font-weight:700}.stat-label{color:var(--text-secondary);margin-top:2px;font-size:12px}.table{border-collapse:collapse;width:100%}.table th{text-align:left;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.05em;border-bottom:2px solid var(--border);padding:10px 12px;font-size:12px;font-weight:600}.table td{border-bottom:1px solid var(--border);padding:12px;font-size:14px}.table tr:hover{background:var(--bg)}