:root{--nn-red:#c40000;--nn-bg:#f5f5f5}
body{background:var(--nn-bg);padding-bottom:72px}
.nn-app-bottom{position:fixed;left:0;right:0;bottom:0;height:64px;background:#fff;border-top:1px solid #ddd;display:flex;justify-content:space-around;align-items:center;z-index:99999}
.nn-app-bottom a{text-decoration:none;color:#333;font-size:12px;font-weight:700;display:flex;flex-direction:column;align-items:center}
@media(min-width:1025px){.nn-app-bottom{display:none}}
.nn-mobile-header{display:none}
@media(max-width:1024px){
.nn-mobile-header{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;background:#fff;position:sticky;top:0;z-index:9999;border-bottom:1px solid #e5e5e5}
}
.nn-card{border-radius:16px;overflow:hidden}