/* ============ 主题变量：暖白柔润 ============ */
:root{
  --bg:#f7f2eb;
  --bg-soft:#f2ece3;
  --panel:#fffdfa;
  --card:#ffffff;
  --border:#e9e1d5;
  --border-soft:#f0eae0;
  --text:#3c352d;
  --text-mid:#6f665a;
  --text-dim:#9c9284;
  --accent:#c1784b;
  --accent-hover:#b06a40;
  --accent-soft:#f7e9dd;
  --accent-line:#e8cdb6;
  --user-bg:#f1e8db;
  --user-border:#e4d8c7;
  --code-bg:#faf5ee;
  --code-border:#ebe3d6;
  --green:#6d9e78;
  --amber:#c9a227;
  --radius:14px;
  --radius-lg:20px;
  --shadow-sm:0 1px 2px rgba(90,70,45,.06), 0 2px 8px rgba(90,70,45,.04);
  --shadow-md:0 2px 6px rgba(90,70,45,.07), 0 8px 24px rgba(90,70,45,.06);
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --mono:"SF Mono",Menlo,Consolas,"Liberation Mono","Courier New",monospace;
}

*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{
  font-family:var(--font);
  background:var(--bg);
  color:var(--text);
  font-size:15px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  overflow:hidden;
}
::-webkit-scrollbar{width:9px;height:9px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:#ddd4c6;border-radius:6px;border:2px solid transparent;background-clip:content-box}
::-webkit-scrollbar-thumb:hover{background:#cdc2b1;background-clip:content-box}

.app{display:flex;height:100vh;overflow:hidden}

/* ============ 侧边栏 ============ */
.sidebar{
  width:264px;flex-shrink:0;
  background:var(--panel);
  border-right:1px solid var(--border);
  display:flex;flex-direction:column;
  transition:margin-left .26s cubic-bezier(.4,0,.2,1);
}
.sidebar.collapsed{margin-left:-264px}
.side-head{display:flex;align-items:center;justify-content:space-between;padding:16px 14px 12px}
.brand{display:flex;align-items:center;gap:9px}
.brand-dot{width:9px;height:9px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px var(--accent-soft)}
.brand-name{font-weight:650;font-size:15.5px;letter-spacing:.3px;color:var(--text)}

.icon-btn{
  width:32px;height:32px;border:none;background:transparent;border-radius:9px;
  color:var(--text-dim);cursor:pointer;display:flex;align-items:center;justify-content:center;
  transition:.16s;
}
.icon-btn:hover{background:var(--bg-soft);color:var(--text)}

.new-chat{
  margin:0 12px 14px;padding:10px 12px;
  display:flex;align-items:center;gap:9px;
  background:var(--accent-soft);color:var(--accent);
  border:1px solid var(--accent-line);border-radius:12px;
  font-size:14px;font-weight:600;cursor:pointer;font-family:var(--font);
  transition:.18s;
}
.new-chat:hover{background:#f3e0d1;border-color:var(--accent)}
.new-chat:active{transform:scale(.985)}

.side-scroll{flex:1;overflow-y:auto;padding:0 10px}
.side-label{font-size:11.5px;color:var(--text-dim);font-weight:600;letter-spacing:1.2px;padding:4px 8px 8px;text-transform:uppercase}
.chat-list{display:flex;flex-direction:column;gap:2px}
.chat-item{
  display:flex;align-items:center;gap:8px;
  padding:9px 10px;border-radius:10px;cursor:pointer;
  color:var(--text-mid);font-size:13.6px;transition:.14s;position:relative;
}
.chat-item:hover{background:var(--bg-soft)}
.chat-item.active{background:var(--accent-soft);color:var(--accent);font-weight:600}
.chat-item .ci-title{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.chat-item .ci-del{opacity:0;width:20px;height:20px;border-radius:6px;display:flex;align-items:center;justify-content:center;color:var(--text-dim);flex-shrink:0}
.chat-item:hover .ci-del{opacity:1}
.chat-item .ci-del:hover{background:#e8dcd0;color:#a0502f}

.side-foot{
  padding:10px 12px;border-top:1px solid var(--border-soft);
  display:flex;align-items:center;justify-content:space-between;gap:8px;
}
.server-status{display:flex;align-items:center;gap:7px;font-size:12.5px;color:var(--text-dim);cursor:pointer;min-width:0}
.server-status .dot{width:7px;height:7px;border-radius:50%;background:#ccc;flex-shrink:0}
.server-status .dot.on{background:var(--green);box-shadow:0 0 0 3px rgba(109,158,120,.16)}
.server-status .dot.err{background:#c25b4a;box-shadow:0 0 0 3px rgba(194,91,74,.14)}
.server-status .dot.load{background:var(--amber);animation:pulse 1.1s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}
#statusText{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ============ 主区 ============ */
.main{flex:1;display:flex;flex-direction:column;min-width:0;background:var(--bg)}

.topbar{
  height:56px;flex-shrink:0;
  display:flex;align-items:center;gap:12px;
  padding:0 18px;background:rgba(255,253,250,.85);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border-soft);
}
.only-mobile{display:none}
.model-picker{display:flex;align-items:center;gap:9px;min-width:0}
#modelSelect{
  appearance:none;-webkit-appearance:none;
  border:1px solid var(--border);background:var(--card);
  color:var(--text);font-size:13.8px;font-weight:600;font-family:var(--font);
  padding:7px 30px 7px 12px;border-radius:10px;cursor:pointer;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M3 4.5L6 7.5L9 4.5' stroke='%239c9284' stroke-width='1.6' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 10px center;
  max-width:280px;box-shadow:var(--shadow-sm);transition:.16s;
}
#modelSelect:hover{border-color:var(--accent-line)}
#modelSelect:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.cap-badge{font-size:11.5px;color:var(--text-dim);background:var(--bg-soft);padding:3px 8px;border-radius:7px;border:1px solid var(--border-soft);white-space:nowrap}
.top-actions{margin-left:auto;display:flex;gap:7px;flex-shrink:0}
.chip-btn{
  display:flex;align-items:center;gap:5px;
  padding:6px 11px;border-radius:10px;
  border:1px solid var(--border);background:var(--card);
  color:var(--text-mid);font-size:13px;font-family:var(--font);
  cursor:pointer;transition:.16s;box-shadow:var(--shadow-sm);
}
.chip-btn:hover{border-color:var(--accent-line);color:var(--accent)}
.chip-btn.on{background:var(--accent-soft);border-color:var(--accent-line);color:var(--accent);font-weight:600}

/* ============ 消息区 ============ */
.msg-wrap{flex:1;overflow-y:auto;scroll-behavior:smooth}
.messages{max-width:820px;margin:0 auto;padding:26px 22px 12px;display:flex;flex-direction:column;gap:22px}

.msg{display:flex;gap:12px;animation:fadeUp .28s ease}
@keyframes fadeUp{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.avatar{
  width:31px;height:31px;flex-shrink:0;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:600;user-select:none;
}
.msg.user .avatar{background:var(--user-bg);border:1px solid var(--user-border);color:#8b6a45;font-size:12.5px}
.msg.assistant .avatar{background:linear-gradient(135deg,#e8a87c,#c1784b);color:#fff;box-shadow:0 2px 8px rgba(193,120,75,.25)}
.msg-body{flex:1;min-width:0}
.msg-meta{display:flex;align-items:center;gap:8px;margin-bottom:5px;height:18px}
.msg-name{font-size:12.8px;font-weight:650;color:var(--text-mid)}
.msg-time{font-size:11.5px;color:var(--text-dim)}

.msg.user .content{
  background:var(--user-bg);border:1px solid var(--user-border);
  border-radius:14px 14px 14px 5px;padding:11px 15px;display:inline-block;max-width:100%;
}
.msg.assistant .content{max-width:100%}

/* 附件回显 */
.attaches{display:flex;flex-wrap:wrap;gap:7px;margin-bottom:8px}
.attach-item{
  display:flex;align-items:center;gap:6px;
  background:var(--card);border:1px solid var(--border);
  border-radius:9px;padding:5px 9px;font-size:12px;color:var(--text-mid);
  box-shadow:var(--shadow-sm);
}
.attach-item img{width:22px;height:22px;object-fit:cover;border-radius:5px}
.attach-thumb{max-width:190px;max-height:190px;border-radius:10px;border:1px solid var(--border);cursor:zoom-in;display:block;margin:6px 0}

/* 思考过程 */
.think-box{
  border:1px dashed var(--accent-line);background:var(--accent-soft);
  border-radius:11px;padding:9px 13px;margin-bottom:11px;font-size:13px;color:#8a6a4d;
}
.think-head{display:flex;align-items:center;gap:6px;cursor:pointer;user-select:none;font-size:12.5px;font-weight:600;color:var(--accent)}
.think-head .caret{transition:transform .2s;font-size:10px}
.think-box.open .caret{transform:rotate(90deg)}
.think-body{display:none;margin-top:8px;padding-top:8px;border-top:1px dashed var(--accent-line);white-space:pre-wrap;line-height:1.7;font-size:12.8px;opacity:.92}
.think-box.open .think-body{display:block}

/* Markdown 排版 */
.md{word-wrap:break-word;overflow-wrap:anywhere;font-size:15px;line-height:1.72}
.md>*:first-child{margin-top:0}
.md>*:last-child{margin-bottom:0}
.md p{margin:0 0 12px}
.md h1,.md h2,.md h3,.md h4{margin:20px 0 10px;font-weight:650;line-height:1.4}
.md h1{font-size:21px;padding-bottom:8px;border-bottom:1px solid var(--border-soft)}
.md h2{font-size:18.5px}
.md h3{font-size:16.5px}
.md h4{font-size:15px;color:var(--text-mid)}
.md ul,.md ol{margin:0 0 12px;padding-left:24px}
.md li{margin:4px 0}
.md li>ul,.md li>ol{margin:4px 0}
.md blockquote{
  margin:0 0 12px;padding:9px 14px;border-left:3px solid var(--accent-line);
  background:var(--bg-soft);border-radius:0 9px 9px 0;color:var(--text-mid);
}
.md hr{border:none;border-top:1px solid var(--border);margin:18px 0}
.md a{color:var(--accent);text-decoration:none;border-bottom:1px solid var(--accent-line)}
.md a:hover{border-bottom-color:var(--accent)}
.md code.inline{
  background:var(--code-bg);border:1px solid var(--code-border);
  padding:1.5px 5px;border-radius:5px;font-family:var(--mono);font-size:13.2px;color:#a85a35;
}
.md table{border-collapse:collapse;width:100%;margin:0 0 14px;font-size:14px;border-radius:9px;overflow:hidden;border:1px solid var(--border)}
.md th,.md td{border:1px solid var(--border);padding:8px 11px;text-align:left}
.md th{background:var(--bg-soft);font-weight:650}
.md img{max-width:100%;border-radius:10px}

/* 代码块 */
.code-block{
  margin:0 0 14px;border:1px solid var(--code-border);border-radius:12px;
  overflow:hidden;background:var(--code-bg);box-shadow:var(--shadow-sm);
}
.code-head{
  display:flex;align-items:center;justify-content:space-between;
  padding:6px 10px 6px 13px;background:#f3ece2;border-bottom:1px solid var(--code-border);
}
.code-lang{font-size:11.5px;color:var(--text-dim);font-family:var(--mono);letter-spacing:.5px;text-transform:uppercase}
.code-copy{
  border:none;background:transparent;color:var(--text-dim);cursor:pointer;
  font-size:11.5px;font-family:var(--font);padding:3px 8px;border-radius:6px;transition:.15s;
  display:flex;align-items:center;gap:4px;
}
.code-copy:hover{background:#e7ddcd;color:var(--text)}
.code-block pre{margin:0;padding:13px 15px;overflow-x:auto;background:transparent}
.code-block pre code{font-family:var(--mono);font-size:13px;line-height:1.65;white-space:pre;color:#4a4038}

/* 语法高亮 */
.tk-key{color:#9b4e8a;font-weight:500}
.tk-str{color:#8a7132}
.tk-num{color:#a2603a}
.tk-com{color:#a79c8c;font-style:italic}
.tk-fun{color:#3f7d8c}
.tk-op{color:#8a7f6f}
.tk-tag{color:#9b4e8a}
.tk-attr{color:#a2603a}

/* 流式光标 */
.cursor{display:inline-block;width:7px;height:15px;background:var(--accent);vertical-align:-2px;margin-left:2px;border-radius:1px;animation:blink .85s steps(2,start) infinite}
@keyframes blink{50%{opacity:0}}

/* 消息操作条 */
.msg-actions{display:flex;gap:5px;margin-top:7px;opacity:0;transition:opacity .18s}
.msg:hover .msg-actions{opacity:1}
.act-btn{
  border:1px solid var(--border);background:var(--card);color:var(--text-dim);
  font-size:11.5px;font-family:var(--font);padding:3px 9px;border-radius:7px;cursor:pointer;transition:.15s;
}
.act-btn:hover{border-color:var(--accent-line);color:var(--accent);background:var(--accent-soft)}

.stat-line{font-size:11.8px;color:var(--text-dim);margin-top:6px;font-variant-numeric:tabular-nums}

/* ============ 欢迎页 ============ */
.welcome{
  position:absolute;inset:56px 0 0 0;display:flex;flex-direction:column;
  align-items:center;justify-content:center;padding:20px;pointer-events:none;
}
.welcome.hide{display:none}
.welcome-logo{font-size:44px;margin-bottom:6px;opacity:.85}
.welcome h1{font-size:25px;font-weight:650;margin-bottom:6px;letter-spacing:.3px}
.welcome p{color:var(--text-dim);font-size:13.8px;margin-bottom:26px}
.quick-cards{display:grid;grid-template-columns:repeat(2,minmax(0,240px));gap:11px;pointer-events:auto}
.qcard{
  background:var(--card);border:1px solid var(--border);border-radius:14px;
  padding:13px 15px;cursor:pointer;transition:.18s;box-shadow:var(--shadow-sm);
  display:flex;flex-direction:column;gap:2px;
}
.qcard:hover{border-color:var(--accent-line);box-shadow:var(--shadow-md);transform:translateY(-2px)}
.qico{font-size:17px}
.qtitle{font-size:14px;font-weight:600}
.qsub{font-size:12px;color:var(--text-dim)}

/* ============ 输入区 ============ */
.composer{
  flex-shrink:0;padding:10px 22px 14px;
  background:linear-gradient(to top,var(--bg) 62%,rgba(247,242,235,0));
}
.composer-inner,.input-box{
  max-width:820px;margin:0 auto;
}
.input-box{
  background:var(--card);border:1px solid var(--border);
  border-radius:var(--radius-lg);box-shadow:var(--shadow-md);
  transition:border-color .18s,box-shadow .18s;
  display:flex;flex-direction:column;overflow:hidden;
}
.input-box:focus-within{border-color:var(--accent-line);box-shadow:0 0 0 4px var(--accent-soft),var(--shadow-md)}
#input{
  border:none;outline:none;resize:none;background:transparent;
  font-family:var(--font);font-size:15px;line-height:1.65;color:var(--text);
  padding:13px 16px 4px;max-height:220px;overflow-y:auto;
}
#input::placeholder{color:#b9b0a2}
.input-tools{display:flex;align-items:center;gap:5px;padding:5px 10px 8px 12px}
.tool-btn{
  width:32px;height:32px;border:none;background:transparent;border-radius:9px;
  color:var(--text-dim);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:.15s;
}
.tool-btn:hover{background:var(--bg-soft);color:var(--accent)}
.char-count{margin-left:auto;font-size:11.5px;color:var(--text-dim);font-variant-numeric:tabular-nums;margin-right:2px}
.send-btn{
  width:34px;height:34px;border:none;border-radius:11px;
  background:var(--accent);color:#fff;cursor:pointer;
  display:flex;align-items:center;justify-content:center;transition:.16s;
  box-shadow:0 2px 8px rgba(193,120,75,.28);flex-shrink:0;
}
.send-btn:hover{background:var(--accent-hover)}
.send-btn:disabled{background:#dfd6c8;box-shadow:none;cursor:not-allowed}
.send-btn.stop{background:#b45a48;animation:pulseSoft 1.4s infinite}
@keyframes pulseSoft{0%,100%{box-shadow:0 0 0 0 rgba(180,90,72,.35)}50%{box-shadow:0 0 0 6px rgba(180,90,72,0)}}

.attach-preview{display:flex;flex-wrap:wrap;gap:8px;max-width:820px;margin:0 auto 8px}
.attach-preview:empty{display:none}
.ap-item{
  position:relative;background:var(--card);border:1px solid var(--border);
  border-radius:11px;padding:5px;box-shadow:var(--shadow-sm);display:flex;align-items:center;gap:7px;
}
.ap-item img{width:46px;height:46px;object-fit:cover;border-radius:7px}
.ap-item .ap-name{font-size:12px;color:var(--text-mid);max-width:130px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.ap-del{
  position:absolute;top:-6px;right:-6px;width:18px;height:18px;border-radius:50%;
  background:#b45a48;color:#fff;border:none;font-size:12px;line-height:1;cursor:pointer;
  display:flex;align-items:center;justify-content:center;box-shadow:0 1px 4px rgba(0,0,0,.15);
}
.hint-bar{max-width:820px;margin:7px auto 0;display:flex;justify-content:space-between;font-size:11.5px;color:var(--text-dim)}

/* ============ 抽屉 ============ */
.drawer-mask{position:fixed;inset:0;background:rgba(60,53,45,.28);opacity:0;visibility:hidden;transition:.22s;z-index:40}
.drawer-mask.show{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:340px;max-width:88vw;
  background:var(--panel);border-left:1px solid var(--border);
  transform:translateX(100%);transition:transform .26s cubic-bezier(.4,0,.2,1);z-index:41;
  display:flex;flex-direction:column;box-shadow:-8px 0 32px rgba(60,53,45,.09);
}
.drawer.show{transform:none}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:16px 16px 12px;border-bottom:1px solid var(--border-soft)}
.drawer-head h3{font-size:15.5px;font-weight:650}
.drawer-body{flex:1;overflow-y:auto;padding:16px}
.field{margin-bottom:22px}
.field label{display:flex;justify-content:space-between;font-size:13.5px;font-weight:600;margin-bottom:9px;color:var(--text-mid)}
.field .val{color:var(--accent);font-variant-numeric:tabular-nums;font-family:var(--mono);font-size:12.5px}
.field .tip{font-size:11.8px;color:var(--text-dim);margin-top:7px;line-height:1.6}
input[type=range]{
  width:100%;height:5px;border-radius:3px;background:var(--bg-soft);
  -webkit-appearance:none;appearance:none;outline:none;border:1px solid var(--border-soft);
}
input[type=range]::-webkit-slider-thumb{
  -webkit-appearance:none;width:17px;height:17px;border-radius:50%;
  background:var(--accent);cursor:pointer;box-shadow:0 1px 4px rgba(193,120,75,.35);border:2px solid #fff;
}
input[type=range]::-moz-range-thumb{width:15px;height:15px;border-radius:50%;background:var(--accent);cursor:pointer;border:2px solid #fff}
.text-input{
  width:100%;border:1px solid var(--border);border-radius:10px;padding:9px 12px;
  font-family:var(--mono);font-size:12.8px;color:var(--text);background:var(--card);outline:none;transition:.16s;
}
.text-input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.switches{display:flex;flex-direction:column;gap:2px}
.switch-row{
  display:flex;align-items:center;justify-content:space-between;
  padding:9px 0;font-size:13.5px;color:var(--text-mid);cursor:pointer;font-weight:500;
  border-bottom:1px solid var(--border-soft);
}
.switch-row input{display:none}
.switch-row i{
  width:40px;height:23px;border-radius:12px;background:#ded4c6;position:relative;transition:.22s;flex-shrink:0;
}
.switch-row i::after{
  content:'';position:absolute;top:2.5px;left:2.5px;width:18px;height:18px;border-radius:50%;
  background:#fff;transition:.22s;box-shadow:0 1px 3px rgba(0,0,0,.16);
}
.switch-row input:checked + i{background:var(--accent)}
.switch-row input:checked + i::after{transform:translateX(17px)}
.btn-ghost{
  width:100%;padding:10px;border:1px solid var(--border);border-radius:11px;
  background:var(--card);color:var(--text-mid);font-family:var(--font);font-size:13.5px;
  cursor:pointer;transition:.16s;
}
.btn-ghost:hover{border-color:var(--accent-line);color:var(--accent);background:var(--accent-soft)}

/* ============ 图片灯箱 ============ */
.lightbox{
  position:fixed;inset:0;background:rgba(45,38,32,.82);z-index:60;
  display:none;align-items:center;justify-content:center;padding:30px;cursor:zoom-out;
  backdrop-filter:blur(4px);
}
.lightbox.show{display:flex}
.lightbox img{max-width:100%;max-height:100%;border-radius:10px;box-shadow:0 12px 48px rgba(0,0,0,.4)}

/* ============ Toast ============ */
.toast-wrap{position:fixed;top:16px;left:50%;transform:translateX(-50%);z-index:80;display:flex;flex-direction:column;gap:8px;align-items:center}
.toast{
  background:rgba(60,53,45,.94);color:#fdf9f4;padding:9px 18px;border-radius:11px;
  font-size:13.5px;box-shadow:0 6px 24px rgba(0,0,0,.2);animation:toastIn .26s ease;
  max-width:80vw;text-align:center;
}
.toast.ok{background:rgba(109,142,110,.96)}
.toast.err{background:rgba(180,90,72,.96)}
@keyframes toastIn{from{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:none}}

/* ============ v2 新增 ============ */
.dim{color:var(--text-dim)}

/* 侧栏搜索 */
.side-search{
  display:flex;align-items:center;gap:6px;margin:0 12px 10px;
  background:var(--bg-soft);border:1px solid var(--border-soft);border-radius:10px;padding:6px 9px;
}
.side-search svg{color:var(--text-dim);flex-shrink:0}
.side-search input{
  border:none;background:transparent;outline:none;flex:1;min-width:0;
  font-family:var(--font);font-size:13px;color:var(--text);
}
.side-search input::placeholder{color:#bcb3a5}
.clear-search{border:none;background:transparent;color:var(--text-dim);cursor:pointer;font-size:15px;line-height:1;padding:0 2px}
.search-results{display:flex;flex-direction:column;gap:2px}

/* 下拉菜单 */
.menu-wrap{position:relative}
.dropdown{
  position:absolute;top:38px;right:0;min-width:184px;z-index:60;
  background:var(--panel);border:1px solid var(--border);border-radius:12px;
  box-shadow:0 8px 28px rgba(60,53,45,.14);padding:5px;display:none;flex-direction:column;
}
.dropdown.show{display:flex}
.dropdown button{
  border:none;background:transparent;text-align:left;padding:8px 11px;border-radius:8px;
  font-family:var(--font);font-size:13.2px;color:var(--text-mid);cursor:pointer;transition:.14s;white-space:nowrap;
}
.dropdown button:hover{background:var(--accent-soft);color:var(--accent)}

/* 角色条 / 对比条 */
.role-bar,.cmp-bar{
  display:flex;align-items:center;gap:10px;padding:7px 20px;font-size:12.8px;
  background:var(--accent-soft);border-bottom:1px solid var(--accent-line);color:#8a6a4d;flex-shrink:0;
}
.role-tag{
  background:var(--accent);color:#fff;padding:2px 9px;border-radius:7px;
  font-size:11.8px;font-weight:600;flex-shrink:0;
}
.role-desc{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.role-x{margin-left:auto;border:none;background:transparent;color:#8a6a4d;cursor:pointer;font-size:16px;line-height:1}
.cmp-models{font-weight:600;color:var(--accent)}
.link-btn{
  border:none;background:transparent;color:var(--accent);cursor:pointer;
  font-family:var(--font);font-size:12.5px;text-decoration:underline;padding:0 2px;
}
.cmp-bar .link-btn:last-child{margin-left:auto}

/* 对比网格 */
.cmp-grid{display:grid;gap:12px;margin-top:2px}
.cmp-col{
  border:1px solid var(--border);border-radius:12px;background:var(--card);
  padding:11px 13px;min-width:0;box-shadow:var(--shadow-sm);
}
.cmp-head{
  display:flex;align-items:center;justify-content:space-between;gap:8px;
  padding-bottom:7px;margin-bottom:9px;border-bottom:1px dashed var(--border);
}
.cmp-name{font-size:12.5px;font-weight:700;color:var(--accent);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.cmp-stat{font-size:11px;color:var(--text-dim);white-space:nowrap}
.cmp-col .md{font-size:14px;line-height:1.7}

/* 知识库引用 */
.sources{
  border:1px solid var(--border-soft);background:var(--bg-soft);
  border-radius:11px;padding:8px 12px;margin-bottom:10px;
}
.src-head{font-size:12px;font-weight:600;color:var(--text-mid);margin-bottom:5px}
.src-item{font-size:12.2px;color:var(--text-dim);line-height:1.6;padding:3px 0;border-top:1px dashed var(--border-soft)}
.src-item:first-of-type{border-top:none}
.src-doc{
  display:inline-block;background:var(--accent-soft);color:var(--accent);
  border-radius:5px;padding:0 6px;margin-right:6px;font-size:11px;
}

/* 抽屉标签 */
.tabs{display:flex;gap:3px}
.tabs button{
  border:none;background:transparent;padding:6px 12px;border-radius:9px;
  font-family:var(--font);font-size:13.5px;color:var(--text-dim);cursor:pointer;transition:.15s;
}
.tabs button:hover{background:var(--bg-soft)}
.tabs button.on{background:var(--accent-soft);color:var(--accent);font-weight:600}

/* 模型 chips */
.model-chips{display:flex;flex-wrap:wrap;gap:6px}
.mchip{
  border:1px solid var(--border);background:var(--card);border-radius:9px;
  padding:5px 10px;font-size:12.3px;font-family:var(--font);color:var(--text-mid);cursor:pointer;transition:.15s;
}
.mchip:hover{border-color:var(--accent-line)}
.mchip.on{background:var(--accent-soft);border-color:var(--accent);color:var(--accent);font-weight:600}

/* 知识库面板 */
.kb-upload{
  border:1.5px dashed var(--border);border-radius:14px;padding:18px;
  text-align:center;cursor:pointer;transition:.18s;background:var(--bg-soft);
}
.kb-upload:hover,.kb-upload.over{border-color:var(--accent);background:var(--accent-soft)}
.kb-upload-inner p{margin:3px 0}
.kb-progress{
  margin-top:10px;padding:9px 12px;border-radius:10px;
  background:var(--accent-soft);border:1px solid var(--accent-line);font-size:12.8px;color:#8a6a4d;
}
.kb-list{display:flex;flex-direction:column;gap:6px;margin:8px 0 14px}
.kb-item{
  display:flex;align-items:center;gap:9px;padding:9px 11px;
  border:1px solid var(--border);border-radius:11px;background:var(--card);box-shadow:var(--shadow-sm);
}
.kb-item.off{opacity:.5}
.kb-sw{position:relative;width:34px;height:20px;flex-shrink:0;cursor:pointer}
.kb-sw input{display:none}
.kb-sw i{position:absolute;inset:0;border-radius:10px;background:#ded4c6;transition:.2s}
.kb-sw i::after{
  content:'';position:absolute;top:2.5px;left:2.5px;width:15px;height:15px;border-radius:50%;
  background:#fff;transition:.2s;box-shadow:0 1px 3px rgba(0,0,0,.16);
}
.kb-sw input:checked + i{background:var(--accent)}
.kb-sw input:checked + i::after{transform:translateX(14px)}
.kb-meta{flex:1;min-width:0}
.kb-name{font-size:13px;font-weight:600;color:var(--text);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.kb-sub{font-size:11.3px;color:var(--text-dim)}
.kb-del{
  border:none;background:transparent;cursor:pointer;font-size:14px;opacity:.5;transition:.15s;padding:2px 4px;
}
.kb-del:hover{opacity:1;transform:scale(1.1)}

/* 角色卡 */
.role-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:7px}
.role-card{
  border:1px solid var(--border);background:var(--card);border-radius:11px;
  padding:9px 11px;cursor:pointer;text-align:left;transition:.15s;
  display:flex;flex-direction:column;gap:1px;font-family:var(--font);
}
.role-card:hover{border-color:var(--accent-line);box-shadow:var(--shadow-sm)}
.role-card.on{background:var(--accent-soft);border-color:var(--accent)}
.role-card b{font-size:13.2px;color:var(--text)}
.role-card.on b{color:var(--accent)}
.role-card span{font-size:11.5px;color:var(--text-dim);line-height:1.4}

/* 状态卡片 */
.stat-card{
  border:1px solid var(--border);border-radius:12px;padding:11px 13px;margin-bottom:10px;background:var(--card);
}
.stat-card h4{font-size:12.8px;color:var(--text-mid);margin-bottom:8px;font-weight:650}
.stat-row{display:flex;justify-content:space-between;gap:10px;font-size:12.5px;color:var(--text-mid);margin-bottom:3px}
.stat-row b{color:var(--text);font-variant-numeric:tabular-nums}
.meter{height:6px;border-radius:3px;background:var(--bg-soft);overflow:hidden;margin:5px 0 8px;border:1px solid var(--border-soft)}
.meter i{display:block;height:100%;background:linear-gradient(90deg,#d9a173,var(--accent));transition:width .5s}

/* 选中快捷指令 */
.sel-tools{
  position:fixed;z-index:70;display:none;gap:3px;padding:4px;
  background:rgba(60,53,45,.95);border-radius:11px;box-shadow:0 6px 22px rgba(0,0,0,.26);
  animation:toastIn .16s ease;
}
.sel-tools button{
  border:none;background:transparent;color:#fdf9f4;cursor:pointer;
  font-family:var(--font);font-size:12.5px;padding:5px 10px;border-radius:8px;white-space:nowrap;transition:.14s;
}
.sel-tools button:hover{background:rgba(255,255,255,.16)}

/* 弹窗 */
.modal-mask{
  position:fixed;inset:0;background:rgba(45,38,32,.42);z-index:90;
  display:none;align-items:center;justify-content:center;padding:20px;backdrop-filter:blur(3px);
}
.modal-mask.show{display:flex}
.modal{
  background:var(--panel);border-radius:16px;padding:20px;width:100%;max-width:520px;
  box-shadow:0 20px 60px rgba(45,38,32,.26);animation:toastIn .2s ease;
}
.modal h3{font-size:16px;margin-bottom:12px;font-weight:650}
.modal textarea{
  width:100%;border:1px solid var(--border);border-radius:11px;padding:11px 13px;
  font-family:var(--font);font-size:14px;line-height:1.65;color:var(--text);
  background:var(--card);outline:none;resize:vertical;min-height:110px;
}
.modal textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.modal-btns{display:flex;justify-content:flex-end;gap:8px;margin-top:14px}
.btn-primary{
  border:none;background:var(--accent);color:#fff;border-radius:11px;
  padding:9px 20px;font-family:var(--font);font-size:13.5px;font-weight:600;cursor:pointer;transition:.16s;
  box-shadow:0 2px 8px rgba(193,120,75,.28);
}
.btn-primary:hover{background:var(--accent-hover)}
.modal-btns .btn-ghost{width:auto;padding:9px 18px}

/* ============ 打印 ============ */
@media print{
  .sidebar,.topbar,.composer,.drawer,.drawer-mask,.toast-wrap,.msg-actions,.welcome{display:none !important}
  .main,.msg-wrap{height:auto;overflow:visible}
  body{background:#fff}
  .msg{break-inside:avoid}
}

/* ============ 响应式 ============ */
@media (max-width:860px){
  .sidebar{position:absolute;z-index:50;height:100%;box-shadow:6px 0 28px rgba(60,53,45,.12)}
  .sidebar:not(.collapsed){margin-left:0}
  .only-mobile{display:flex}
  #btnCollapse{display:none}
  .messages{padding:18px 14px 10px}
  .composer{padding:8px 12px 12px}
  .topbar{padding:0 12px;gap:6px}
  .chip-btn span{display:none}
  .chip-btn{padding:6px 9px}
  .quick-cards{grid-template-columns:1fr;max-width:320px;padding:0 16px}
  .welcome h1{font-size:21px}
  #modelSelect{max-width:130px;font-size:13px}
  .cap-badge{display:none}
  .drawer{width:100vw;max-width:100vw}
  .cmp-grid{grid-template-columns:1fr !important}
  .role-grid{grid-template-columns:1fr}
  .role-bar,.cmp-bar{padding:6px 12px;font-size:12px}
}