.ldctx-overlay{position:fixed;inset:0;background:rgba(0,0,0,.45);display:flex;align-items:center;justify-content:center;z-index:9999}
.ldctx-card{background:#fff;border-radius:14px;max-width:720px;width:92%;box-shadow:0 10px 30px rgba(0,0,0,.2);overflow:hidden;position:relative}
.ldctx-head{padding:14px 16px;font-weight:700;border-bottom:1px solid #eee}
.ldctx-body{padding:14px 16px}
.ldctx-log{height:360px;overflow:auto;border:1px solid #eee;border-radius:8px;padding:10px;margin-bottom:10px;background:#fafafa}
.ldctx-form{display:flex;gap:8px}
.ldctx-form .ldctx-q{flex:1;padding:.6rem;border:1px solid #ddd;border-radius:8px}
.ldctx-form button{padding:.6rem 1rem;border-radius:8px;border:0;background:#111827;color:#fff;font-weight:600;cursor:pointer}
.msg{padding:.35rem .5rem;margin:.2rem 0;border-radius:6px}
.msg.user{background:#e0f2fe}
.msg.bot{background:#eef2ff}
.ldctx-close{position:absolute;top:8px;right:12px;border:0;background:transparent;font-size:1.4rem;cursor:pointer}
#ldctx-fab{position:fixed;right:18px;bottom:18px;padding:.7rem 1rem;border-radius:999px;border:0;background:#0ea5e9;color:#fff;font-weight:700;z-index:9999;box-shadow:0 8px 20px rgba(0,0,0,.2);cursor:pointer}
#ldctx-fab:hover{filter:brightness(1.05)}