:root{--bg: #fafafa;--text: #1f2328;--text-dim: #8a93a6;--accent: #6b5df6;--user-bubble: #eef0f4;--border: #e4e7ec;--ok: #2ea36b;--err: #d9534f;--radius: 14px;--mono: "Cascadia Code", "JetBrains Mono", Consolas, monospace}*{box-sizing:border-box}html,body{margin:0;height:100%;background:var(--bg);color:var(--text);font-family:-apple-system,Segoe UI,Microsoft YaHei,PingFang SC,sans-serif;overflow:hidden}#app{display:flex;flex-direction:column;height:100%}header{display:flex;align-items:center;gap:10px;padding:10px 16px;border-bottom:1px solid var(--border);background:var(--bg);z-index:5}.logo{font-family:var(--mono);font-size:20px;font-weight:700;color:var(--accent)}#model-badge{font-size:12.5px;color:var(--text-dim);margin-right:auto;max-width:320px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.hbtn{background:none;color:var(--text-dim);border:none;border-radius:8px;padding:5px 10px;font-size:14px;cursor:pointer;transition:all .15s}.hbtn:hover{background:var(--user-bubble);color:var(--text)}.hbtn.icon{font-size:15px;padding:5px 9px}.hbtn.active{color:var(--ok);max-width:220px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.hbtn.active:hover{background:#2ea36b14}#chat-list{flex:1;overflow-y:auto;padding:24px 18px 8px;scroll-behavior:smooth}#chat-list::-webkit-scrollbar{width:8px}#chat-list::-webkit-scrollbar-thumb{background:var(--border);border-radius:4px}#chat-list>*{max-width:760px;margin-left:auto;margin-right:auto}.msg.user{display:inline-block;background:var(--user-bubble);padding:9px 14px;border-radius:var(--radius);margin-bottom:18px;font-size:14.5px;line-height:1.7;overflow-wrap:anywhere;white-space:pre-wrap}#chat-list>.msg.user{display:block}.msg.assistant{margin-bottom:18px;font-size:15px;line-height:1.75}.msg.error{color:var(--err);font-size:13.5px;border-left:3px solid var(--err);padding:4px 12px;margin-bottom:16px}.msg.notice{color:var(--ok);font-size:13.5px;border-left:3px solid var(--ok);padding:4px 12px;margin-bottom:16px}.msg.notice b{color:var(--text)}.cursor{display:inline-block;width:7px;height:15px;background:var(--accent);vertical-align:-2px;margin-left:2px;animation:blink 1s steps(2) infinite}@keyframes blink{50%{opacity:0}}.markdown-body>:first-child{margin-top:0}.markdown-body>:last-child{margin-bottom:0}.md-p{margin:.45em 0}.md-h{margin:.9em 0 .4em}.md-list{margin:.4em 0;padding-left:1.4em}.md-code{font-family:var(--mono);font-size:.88em;background:#eceef2;padding:1px 6px;border-radius:5px}.md-pre{position:relative;margin:.7em 0;padding:24px 12px 10px;background:#f4f5f7;border:1px solid var(--border);border-radius:10px;overflow-x:auto}.md-pre code{font-family:var(--mono);font-size:12.5px;line-height:1.6;color:#2b3245}.md-pre-lang{position:absolute;top:4px;left:12px;font-family:var(--mono);font-size:10.5px;color:var(--text-dim);text-transform:uppercase;letter-spacing:.5px}.md-space{height:.5em}a{color:var(--accent)}.tool-card{margin-bottom:14px;border:1px solid var(--border);border-radius:10px;background:#fff;font-size:13px}.tool-card summary{display:flex;align-items:center;gap:8px;padding:7px 12px;cursor:pointer;list-style:none;user-select:none;color:var(--text-dim)}.tool-card summary::-webkit-details-marker{display:none}.tool-card summary:before{content:"⚙";font-size:12px}.tool-name{font-family:var(--mono);font-size:12px;color:var(--text)}.tool-state{margin-left:auto;font-size:11px;padding:1px 8px;border-radius:999px}.tool-state.running{color:var(--accent);background:#6b5df61a;animation:pulse 1.2s infinite}.tool-state.done{color:var(--ok);background:#2ea36b1a}.tool-state.failed{color:var(--err);background:#d9534f1a}@keyframes pulse{50%{opacity:.5}}.tool-result{margin:0;padding:10px 12px;border-top:1px solid var(--border);font-family:var(--mono);font-size:12px;color:var(--text-dim);max-height:200px;overflow:auto;white-space:pre-wrap;overflow-wrap:anywhere}#composer-wrap{padding:10px 18px 14px;background:linear-gradient(transparent,var(--bg) 30%)}#status-bar{height:16px;font-size:12px;color:var(--text-dim);padding:0 6px}#status-bar.active:before{content:"● ";color:var(--accent);animation:pulse 1s infinite}#composer{display:flex;gap:10px;align-items:flex-end;max-width:760px;margin:0 auto;background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:10px 10px 10px 14px;transition:border-color .15s;box-shadow:0 1px 3px #1418280a}#composer:focus-within{border-color:#c9c3f5}#composer-input{flex:1;background:none;border:none;outline:none;resize:none;color:var(--text);font-size:14.5px;line-height:1.6;font-family:inherit;max-height:180px}.send-btn{flex:none;width:36px;height:36px;border-radius:9px;border:none;background:var(--accent);color:#fff;font-size:15px;cursor:pointer;transition:opacity .15s}.send-btn:hover{opacity:.88}.send-btn:disabled{opacity:.35;cursor:not-allowed}#btn-stop{display:none;flex:none;width:36px;height:36px;border-radius:9px;border:1px solid var(--err);background:#fff;color:var(--err);font-size:13px;cursor:pointer}#drawer-mask{position:fixed;inset:0;background:#1418284d;opacity:0;pointer-events:none;transition:opacity .2s;z-index:9}#drawer-mask.open{opacity:1;pointer-events:auto}#drawer{position:fixed;top:0;right:-420px;width:400px;max-width:95vw;height:100%;background:#fff;border-left:1px solid var(--border);z-index:10;transition:right .25s ease;display:flex;flex-direction:column}#drawer.open{right:0}.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--border)}.drawer-head h2{margin:0;font-size:16px;font-weight:600}.drawer-body{flex:1;overflow-y:auto;padding:18px 20px}.field{margin-bottom:16px}.field label{display:block;font-size:12.5px;color:var(--text-dim);margin-bottom:6px}.field input,.field select{width:100%;padding:9px 12px;border-radius:9px;background:var(--bg);border:1px solid var(--border);color:var(--text);font-size:13.5px;outline:none;font-family:inherit}.field input:focus,.field select:focus{border-color:#c9c3f5}.field .hint{font-size:11.5px;color:var(--text-dim);margin-top:5px;line-height:1.5}.field .hint.err{color:var(--err)}.preset-chips{display:flex;flex-wrap:wrap;gap:6px;margin-top:7px}.preset-chip{font-size:12px;padding:3px 10px;border-radius:999px;background:var(--bg);border:1px solid var(--border);color:var(--text-dim);cursor:pointer;transition:all .12s;user-select:none}.preset-chip:hover{border-color:#c9c3f5;color:var(--accent)}details.advanced{margin:4px 0 14px;font-size:13px}details.advanced summary{color:var(--text-dim);cursor:pointer;user-select:none;list-style:none}details.advanced summary:before{content:"▸ "}details.advanced[open] summary:before{content:"▾ "}.privacy{margin-top:20px;padding:12px;border-radius:10px;background:#f4f8f5;border:1px solid #d5e8db;font-size:12px;color:var(--text-dim);line-height:1.7}#welcome{max-width:560px;margin:14vh auto 0;text-align:center;padding:0 20px}#welcome .big{font-family:var(--mono);font-size:44px;font-weight:800;color:var(--accent)}#welcome p{color:var(--text-dim);font-size:14px;margin:8px 0 22px}#welcome .chips{display:flex;flex-wrap:wrap;gap:8px;justify-content:center}.chip{padding:7px 14px;border-radius:999px;font-size:13px;cursor:pointer;background:#fff;border:1px solid var(--border);color:var(--text);transition:all .15s}.chip:hover{border-color:#c9c3f5;color:var(--accent)}@media(max-width:640px){#chat-list>*,#composer{max-width:100%}}