:root{
  --navy:#0d3b66; --blue:#1b5e20; --gold:#e0a93b; --ink:#1a2b3c; --muted:#5b6b7b; --line:#e0e6ef; --paper:#f5f8fc;
}
#csh-chat-root{position:fixed; right:18px; bottom:18px; z-index:9999; font-family:system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;}
.csh-chat-btn{width:60px; height:60px; border-radius:50%; background:var(--blue); color:#fff; border:0; box-shadow:0 6px 18px rgba(13,59,102,.35); cursor:pointer; font-size:26px; display:flex; align-items:center; justify-content:center;}
.csh-chat-panel{position:absolute; right:0; bottom:74px; width:340px; max-width:calc(100vw - 36px); height:460px; max-height:calc(100vh - 120px); background:#fff; border:1px solid var(--line); border-radius:16px; box-shadow:0 12px 40px rgba(13,59,102,.25); display:none; flex-direction:column; overflow:hidden;}
.csh-chat-panel.open{display:flex;}
.csh-chat-head{background:var(--navy); color:#fff; padding:14px 16px; font-weight:700; display:flex; justify-content:space-between; align-items:center;}
.csh-chat-head small{display:block; font-weight:400; opacity:.8; font-size:11px;}
.csh-chat-close{background:none; border:0; color:#fff; font-size:20px; cursor:pointer; line-height:1;}
.csw-body{flex:1; overflow-y:auto; padding:14px; background:var(--paper);}
.csw-msg{margin:0 0 10px; max-width:85%; padding:9px 12px; border-radius:12px; font-size:14px; line-height:1.4; white-space:pre-wrap; word-wrap:break-word;}
.csw-bot{background:#fff; border:1px solid var(--line); color:var(--ink); border-bottom-left-radius:4px;}
.csw-user{background:var(--blue); color:#fff; margin-left:auto; border-bottom-right-radius:4px;}
.csw-agent{background:var(--navy); color:#fff; border-bottom-left-radius:4px;}
.csw-who{font-size:10px; text-transform:uppercase; letter-spacing:.5px; opacity:.75; margin-bottom:3px;}
.csw-chips{display:flex; flex-wrap:wrap; gap:7px; margin:2px 0 10px; padding:0 14px;}
.csw-chip{background:#fff; border:1px solid var(--blue); color:var(--blue); border-radius:20px; padding:6px 12px; font-size:13px; cursor:pointer;}
.csw-chip:hover{background:var(--blue); color:#fff;}
.csw-input{display:flex; gap:8px; padding:10px; border-top:1px solid var(--line); background:#fff;}
.csw-input input{flex:1; border:1px solid var(--line); border-radius:10px; padding:9px 11px; font-size:14px;}
.csw-input button{background:var(--blue); color:#fff; border:0; border-radius:10px; padding:0 14px; font-size:14px; cursor:pointer;}
.csw-details{display:flex; gap:8px; padding:8px 10px; border-top:1px solid var(--line); background:#fff;}
.csw-details input{flex:1; border:1px solid var(--line); border-radius:10px; padding:8px 10px; font-size:13px;}
.csw-est{background:#fff; border:1px dashed var(--blue); border-radius:12px; padding:12px; font-size:13px; margin:0 0 10px;}
.csw-est .row{display:flex; justify-content:space-between; padding:3px 0; border-bottom:1px dashed #e6ecf4;}
.csw-est .row.total{font-weight:800; font-size:15px; border-bottom:0; padding-top:8px;}
.csw-est .disc{font-size:11px; color:var(--muted); margin-top:8px;}
.csw-est input{width:100%; border:1px solid var(--line); border-radius:8px; padding:7px 9px; font-size:13px; box-sizing:border-box;}