#rx-chat-root{font-family:Arial,sans-serif;position:fixed;right:18px;bottom:18px;z-index:999999}
#rx-chat-button{background:#0b2a55;color:#fff;border:1px solid rgba(255,255,255,.18);padding:14px 18px;border-radius:999px;font-weight:700;box-shadow:0 12px 35px rgba(0,0,0,.35);cursor:pointer}
#rx-chat-box{width:350px;max-width:calc(100vw - 28px);height:500px;max-height:calc(100vh - 90px);background:#08172f;color:#fff;border:1px solid rgba(255,255,255,.12);border-radius:22px;overflow:hidden;box-shadow:0 18px 60px rgba(0,0,0,.5)}
.rx-hidden{display:none!important}.rx-chat-head{background:linear-gradient(135deg,#08172f,#123d78);padding:16px;display:flex;justify-content:space-between;align-items:center}
.rx-chat-head strong{display:block;font-size:16px}.rx-chat-head span{display:block;color:#bed6ff;font-size:12px;margin-top:3px}
#rx-chat-close{background:transparent;border:0;color:#fff;font-size:28px;cursor:pointer}.rx-chat-intro{padding:16px;display:grid;gap:10px}
.rx-chat-intro input,.rx-compose input{background:#10264a;color:#fff;border:1px solid rgba(255,255,255,.14);border-radius:12px;padding:12px;outline:none}
.rx-chat-intro button,.rx-compose button,.rx-file-btn{background:#2f7df6;color:#fff;border:0;border-radius:12px;padding:12px;font-weight:700;cursor:pointer}
#rx-chat-error{color:#ffb8b8;font-size:12px;min-height:15px}#rx-chat-panel{height:calc(100% - 64px);display:flex;flex-direction:column}
#rx-messages{flex:1;overflow-y:auto;padding:14px;background:#0a1b35}.rx-msg{max-width:82%;padding:10px 12px;border-radius:14px;margin:7px 0;font-size:14px;line-height:1.35}
.rx-guest{background:#2f7df6;margin-left:auto}.rx-admin{background:#17345f;margin-right:auto}.rx-time{display:block;font-size:10px;opacity:.7;margin-top:4px}
.rx-compose{display:flex;gap:8px;padding:12px;background:#08172f}.rx-compose input{flex:1}.rx-file-btn{width:44px;padding:10px}
.rx-file-link{margin-top:8px}.rx-file-link a{color:#fff;text-decoration:underline;font-weight:700}
@media(max-width:480px){#rx-chat-root{right:10px;bottom:10px}#rx-chat-box{width:calc(100vw - 20px);height:78vh;border-radius:18px}}