.protected-content,.protected-content *{-webkit-user-select:none;user-select:none;-webkit-touch-callout:none}
.protected-content input,.protected-content textarea,.protected-content [contenteditable="true"]{-webkit-user-select:text;user-select:text;-webkit-touch-callout:default}
.protected-content{position:relative;isolation:isolate;overflow:hidden}
.protected-content.entitlement-checking{visibility:hidden}
.content-watermark{position:absolute;inset:0;z-index:5;pointer-events:none;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));align-content:space-around;gap:70px 12px;overflow:hidden;opacity:.13;color:#ffcf80;font-size:13px;line-height:1.7;text-align:center}
.content-watermark span{transform:rotate(-22deg);white-space:nowrap}
.license-stamp{font-size:14px;color:var(--muted);line-height:1.7;margin:0 0 18px;overflow-wrap:anywhere}
@media print{
 .protected-content,.protected-content *{display:none!important}
 body::after{content:'CACLT PREP：题目与解析仅供账户本人在线学习，不提供打印导出。';display:block;padding:24px;color:#000;background:#fff}
}