*{box-sizing: border-box;margin:0;padding:0;}
body{font-family:Arial,Helvetica,sans-serif;color:#222;background:#fff;line-height:1.8;font-size:16px;}
.valve-wrap{max-width:1240px;margin:0 auto;padding:18px;}
.main-title{font-size:30px;font-weight:700;color:#004a99;border-bottom:3px solid #004a99;padding-bottom:10px;margin-bottom:24px;}
.sub-title{font-size:23px;font-weight:600;color:#004a99;margin:32px 0 14px;padding-left:12px;border-left:5px solid #004a99;}
.third-title{font-size:20px;font-weight:600;margin:22px 0 10px;color:#004a99;}
.desc-text{margin:10px 0 16px;line-height:1.85;}
.card-box{background:#f6faff;border-radius:8px;padding:20px;margin:20px 0;border:1px solid #d8e7f7;}
.feature-item{background:#ffffff;border:1px solid #d8e7f7;border-radius:6px;padding:16px;margin:14px 0;}