#aichat-root{position:fixed;right:20px;bottom:20px;z-index:99999;font:14px/1.45 system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:#222}
#aichat-fab{width:56px;height:56px;border-radius:50%;border:0;background:#1a5fb4;color:#fff;font-size:26px;cursor:pointer;box-shadow:0 4px 14px rgba(0,0,0,.3)}
#aichat-panel{position:absolute;right:0;bottom:68px;width:340px;max-width:calc(100vw - 40px);height:480px;max-height:calc(100vh - 110px);background:#fff;border-radius:12px;box-shadow:0 8px 30px rgba(0,0,0,.3);display:flex;flex-direction:column;overflow:hidden}
#aichat-panel[hidden]{display:none}
#aichat-head{background:#1a5fb4;color:#fff;padding:12px 14px;display:flex;justify-content:space-between;align-items:center;font-weight:600}
#aichat-close{background:none;border:0;color:#fff;font-size:22px;cursor:pointer;line-height:1}
#aichat-msgs{flex:1;overflow-y:auto;padding:12px;background:#f5f6f8}
.aichat-m{max-width:88%;padding:8px 11px;border-radius:10px;margin-bottom:8px;word-wrap:break-word}
.aichat-assistant{background:#fff;border:1px solid #e1e4e8}
.aichat-user{background:#1a5fb4;color:#fff;margin-left:auto}
.aichat-user a{color:#fff}
.aichat-m a{color:#1a5fb4;text-decoration:underline}
#aichat-form{display:flex;gap:6px;padding:8px;border-top:1px solid #e1e4e8;background:#fff}
#aichat-input{flex:1;padding:8px 10px;border:1px solid #c5c9d0;border-radius:8px;font:inherit;min-width:0}
#aichat-form button{padding:8px 12px;border:0;border-radius:8px;background:#1a5fb4;color:#fff;cursor:pointer;font:inherit}
#aichat-note{font-size:11px;color:#6b7280;text-align:center;padding:0 8px 6px;background:#fff}