body{margin:0;padding:0;font-family:Tahoma,Verdana,Arial,sans-serif;background-color:#f5f6f8;color:#333}.header{background-color:#036;color:#fff;padding:10px 20px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid #002347}.header h1{margin:0;font-size:20px;font-weight:700}.lang-switch button{background-color:#fff;border:1px solid #cfd3da;border-radius:4px;padding:4px 10px;font-family:Tahoma,sans-serif;font-size:12px;color:#333;cursor:pointer;margin-left:5px}.lang-switch button.active{background-color:#e8eef6;border-color:#036;color:#036;font-weight:700}.container{display:flex;padding:12px;gap:12px;height:calc(100vh - 65px);box-sizing:border-box}.sidebar{width:250px;background-color:#fff;border:1px solid #e3e6ea;border-radius:6px;display:flex;flex-direction:column;overflow-y:auto}.menu-header{background:#f7f8fa;border-bottom:1px solid #e3e6ea;padding:10px 12px;font-weight:700;font-size:14px;color:#555}.menu-list{list-style:none;margin:0;padding:0}.menu-list li{padding:0;margin:0;border-bottom:1px solid #f0f1f3}.menu-list button,.menu-list a{display:block;width:100%;text-align:left;background:none;border:none;border-left:3px solid transparent;padding:9px 12px;font-family:Tahoma,sans-serif;font-size:13px;color:#333;cursor:pointer;text-decoration:none;box-sizing:border-box}.menu-list button:hover,.menu-list a:hover{background-color:#f2f5f9;color:#036}.menu-list li.active a{background-color:#e8eef6;border-left-color:#036;color:#036;font-weight:700}.main-content{flex-grow:1;background-color:#fff;border:1px solid #e3e6ea;border-radius:6px;display:flex;flex-direction:column;overflow:hidden}.content-header{background-color:#fff;border-bottom:1px solid #e3e6ea;padding:12px 16px}.content-header h2{margin:0;font-size:18px;color:#333;font-weight:700}.content-body{padding:20px;flex-grow:1;overflow-y:auto;font-size:14px}.data-table{width:100%;border-collapse:collapse;margin-top:15px}.data-table th,.data-table td{border-bottom:1px solid #eceef1;padding:9px 10px;text-align:left}.data-table th{background-color:#f7f8fa;color:#555;font-weight:700;border-bottom:1px solid #e3e6ea}.data-table tbody tr:hover{background-color:#f6f9fc}