/* 知识库问答 */
.qa-body{overflow:hidden}
.qa-main{display:flex;flex-direction:column;height:calc(100vh - 56px);max-width:980px;margin:0 auto;padding:0 24px}

.qa-stream{flex:1;overflow-y:auto;padding:26px 4px 12px}

.qa-hello h1{font-size:26px;margin:18px 0 10px;font-weight:700}
.qa-hello p{margin:0 0 20px;color:var(--muted);font-size:13.5px;line-height:1.8;max-width:62ch}
.suggests{display:flex;flex-wrap:wrap;gap:8px}
.sug{border:1px solid var(--line);background:#fff;border-radius:20px;padding:7px 14px;
  font:inherit;font-size:12.5px;color:var(--ink2);cursor:pointer;transition:.15s}
.sug:hover{border-color:var(--brand2);color:var(--brand)}

.msg{margin-bottom:22px;animation:rise .18s ease-out}
@keyframes rise{from{opacity:0;transform:translateY(4px)}to{opacity:1;transform:none}}

.msg.user{display:flex;justify-content:flex-end}
.msg.user .bubble{background:var(--brand);color:#fff;border-radius:12px 12px 2px 12px;
  padding:9px 14px;max-width:76%;font-size:14px;line-height:1.7}

.msg.bot .bubble{background:#fff;border:1px solid var(--line);border-radius:2px 12px 12px 12px;
  padding:14px 16px;max-width:86%;font-size:14.5px;line-height:1.85;white-space:pre-wrap;word-break:break-word}
.msg.bot .bubble.loading{color:var(--muted)}

.cite{color:var(--brand2);font-size:11px;vertical-align:super;cursor:pointer;padding:0 1px}
.cite:hover{text-decoration:underline}

.sources{margin:10px 0 0 2px;max-width:86%}
.src{display:flex;gap:10px;padding:10px 12px;border:1px solid var(--line);border-radius:9px;
  background:#fbfcfe;margin-bottom:6px;font-size:12.5px;transition:.15s}
.src:hover{border-color:#c9dcef;background:#f6fafe}
.src .n{flex:0 0 20px;height:20px;border-radius:5px;background:#e4eef8;color:var(--brand);
  font-size:11px;font-weight:600;display:grid;place-items:center;margin-top:1px}
.src .body{flex:1;min-width:0}
.src a{color:var(--ink);font-weight:600;text-decoration:none}
.src a:hover{color:var(--brand);text-decoration:underline}
.src .meta{display:block;color:var(--muted);font-size:11px;margin:2px 0 4px}
.src p{margin:0;color:var(--muted);line-height:1.55;
  overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
.src .score{flex:0 0 auto;font-family:Consolas,monospace;font-size:10.5px;color:#8aa0b8;padding-top:2px}

.qa-input{display:flex;gap:10px;align-items:flex-end;padding:12px 0 18px;border-top:1px solid var(--line)}
.qa-input textarea{flex:1;min-height:44px;max-height:140px;resize:none;padding:11px 13px;
  border:1px solid var(--line);border-radius:10px;font:inherit;font-size:14px;line-height:1.6;outline:none}
.qa-input textarea:focus{border-color:var(--brand2);box-shadow:0 0 0 3px rgba(26,127,193,.1)}
.qa-input .btn{height:44px;padding:0 22px}

.qa-error{color:#a4162f;font-size:13px}