:root{--primary-color: #b4cbfa;--primary-hover: #40a9ff;--secondary-color: #f0f2f5;--success-color: #52c41a;--warning-color: #faad14;--danger-color: #ff4d4f;--text-color: #333;--text-secondary: #666;--border-color: #d9d9d9;--background-color: #f5f5f5;--card-background: #ffffff;--sidebar-width: 240px}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;font-size:14px;line-height:1.5;color:var(--text-color);background-color:var(--background-color)}.app-container{display:flex;min-height:100vh}.main-content{flex:1;padding:24px;overflow-y:auto}.sidebar{width:var(--sidebar-width);background:var(--card-background);border-right:1px solid var(--border-color);height:100vh;position:sticky;top:0}.logo{padding:20px;font-size:24px;font-weight:700;color:var(--primary-color);border-bottom:1px solid var(--border-color)}.menu{list-style:none;padding:16px 0}.menu li{margin:4px 0}.menu li a{display:flex;align-items:center;padding:12px 20px;color:var(--text-color);text-decoration:none;transition:all .3s}.menu li a:hover{background-color:var(--secondary-color)}.menu li.active a{background-color:var(--primary-color);color:#fff}.menu .icon{margin-right:12px;font-size:18px}.page-container{max-width:1200px;margin:0 auto}.page-container h1{font-size:24px;margin-bottom:24px;color:var(--text-color)}.stats-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin-bottom:24px}.stats-card{background:var(--card-background);border:1px solid var(--border-color);border-radius:8px;padding:20px;box-shadow:0 2px 8px #0000000f}.stats-card h3{font-size:14px;color:var(--text-secondary);margin-bottom:8px}.stats-card .value{font-size:28px;font-weight:700;color:var(--text-color)}.filter-section{background:var(--card-background);border:1px solid var(--border-color);border-radius:8px;padding:20px;margin-bottom:24px;display:flex;flex-wrap:wrap;gap:16px;align-items:flex-end}.filter-group{flex:1;min-width:150px}.filter-group label{display:block;margin-bottom:8px;color:var(--text-secondary);font-size:14px}.filter-group select,.filter-group input{width:100%;padding:8px 12px;border:1px solid var(--border-color);border-radius:4px;font-size:14px;transition:border-color .3s}.filter-group select:focus,.filter-group input:focus{outline:none;border-color:var(--primary-color)}.btn{padding:8px 16px;border:1px solid var(--border-color);border-radius:4px;font-size:14px;cursor:pointer;transition:all .3s;background:#fff;color:var(--text-color)}.btn:hover{border-color:var(--primary-color);color:var(--primary-color)}.btn-primary{background:var(--primary-color);color:#fff;border-color:var(--primary-color)}.btn-primary:hover{background:var(--primary-hover);border-color:var(--primary-hover)}.btn-secondary{background:var(--secondary-color);border-color:var(--border-color)}.btn-outline{background:transparent;border-color:var(--border-color)}.table-container{background:var(--card-background);border:1px solid var(--border-color);border-radius:8px;overflow:hidden;margin-bottom:24px}.table{width:100%;border-collapse:collapse}.table th{background:var(--secondary-color);padding:16px;text-align:left;font-weight:600;color:var(--text-color);border-bottom:1px solid var(--border-color)}.table td{padding:16px;border-bottom:1px solid var(--border-color)}.table tr:hover{background-color:var(--secondary-color)}.pagination{display:flex;justify-content:center;align-items:center;gap:8px;margin-top:24px}.page-numbers{display:flex;gap:4px}.page-numbers span{padding:8px 12px;border:1px solid var(--border-color);border-radius:4px;cursor:pointer}.page-numbers span.active{background:var(--primary-color);color:#fff;border-color:var(--primary-color)}.form-group{margin-bottom:16px}.form-group label{display:block;margin-bottom:8px;color:var(--text-secondary)}.form-control{width:100%;padding:8px 12px;border:1px solid var(--border-color);border-radius:4px;font-size:14px}.modal-overlay{position:fixed;inset:0;background:#00000080;display:flex;justify-content:center;align-items:center;z-index:1000}.modal-content{background:#fff;border-radius:8px;padding:24px;min-width:400px;max-width:600px;max-height:80vh;overflow-y:auto}.modal-header{margin-bottom:20px}.modal-header h2{font-size:20px;color:var(--text-color)}.modal-footer{display:flex;justify-content:flex-end;gap:12px;margin-top:24px}@media(max-width:768px){.app-container{flex-direction:column}.sidebar{width:100%;height:auto;position:static}.menu{display:flex;overflow-x:auto}.menu li{flex-shrink:0}.stats-row{grid-template-columns:1fr}.filter-section{flex-direction:column}.filter-group{width:100%}}.account-management,.role-management,.system-logs{animation:fadeIn .3s ease}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.form-error{color:#ff4d4f;font-size:12px;margin-top:4px}.form-error input,.form-error select{border-color:#ff4d4f!important}.loading{opacity:.6;pointer-events:none}.loading-spinner{display:inline-block;width:16px;height:16px;border:2px solid #f3f3f3;border-top:2px solid #1890ff;border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}