.chb-wrapper{max-width:900px;margin:0 auto;}
.chb-card{background:#f8f8f8;padding:20px;border-radius:10px;margin-bottom:15px;}
.chb-title{font-weight:600;font-size:18px;}
.chb-result{color:#0a7d3b;font-weight:700;margin:0 8px;}
.chb-date{font-size:14px;color:#666;margin-top:5px;}