.ecs-wrapper{display:flex;gap:30px;align-items:flex-start;font-family:Arial,sans-serif;}
.ecs-left{background:#fff;padding:18px;border-radius:8px;box-shadow:0 6px 18px rgba(0,0,0,0.12);width:260px;}
.ecs-item{display:flex;align-items:center;gap:12px;padding:10px;cursor:pointer;border-radius:6px;transition:background .18s,transform .12s;margin-bottom:8px;}
.ecs-item:hover{background:rgba(0,0,0,0.04);transform:translateX(3px);}
.ecs-item.active{background:linear-gradient(90deg,rgba(100,58,255,0.06),rgba(255,255,255,0.02));box-shadow:inset 0 0 0 1px rgba(100,58,255,0.08);}
.ecs-icon{width:40px;height:40px;display:flex;align-items:center;justify-content:center;}
.ecs-item-label{font-weight:600;font-size:14px;}
.ecs-right{flex:1;min-height:180px;}
.ecs-content-box{background:#f9f9f9;border-radius:12px;padding:28px;border:1px solid #ddd;}
.ecs-content-title{font-size:22px;margin:0 0 10px 0;color:#333;}
.ecs-content-desc{margin:0;color:#555;font-size:15px;line-height:1.5;}