/* ============================================================
   聚流 · 在线对话（chat.html）
   结构参考 ChatGPT：左侧会话栏（分组/搜索/账户）、居中对话列、
   底部 Composer（附件 + 模型与思考强度 + 圆形发送）、AI 消息操作行。
   皮肤沿用 lcypvt：夜黑侧栏 / 纸白主区、1px 发丝线、2px 直角、
   等宽小标签、300 字重标题 + 衬线斜体强调、单一紫 #5a4bc4。
   仿 Codex 的思考等级条：组件结构与行为原样保留，仅做变量映射。
   ============================================================ */

@font-face{font-family:'Google Sans';font-style:normal;font-weight:300;font-display:swap;src:url('fonts/GoogleSans-300.woff2') format('woff2')}
@font-face{font-family:'Google Sans';font-style:normal;font-weight:400;font-display:swap;src:url('fonts/GoogleSans-400.woff2') format('woff2')}
@font-face{font-family:'Google Sans';font-style:normal;font-weight:500;font-display:swap;src:url('fonts/GoogleSans-500.woff2') format('woff2')}
@font-face{font-family:'Google Sans';font-style:normal;font-weight:600;font-display:swap;src:url('fonts/GoogleSans-600.woff2') format('woff2')}
@font-face{font-family:'Google Sans';font-style:italic;font-weight:400;font-display:swap;src:url('fonts/GoogleSans-italic-400.woff2') format('woff2')}

:root{
  --sans:'Google Sans',-apple-system,BlinkMacSystemFont,'PingFang SC','Microsoft YaHei','Noto Sans SC',sans-serif;
  --mono:ui-monospace,'Cascadia Code','SF Mono',Menlo,Consolas,'Courier New',monospace;
  --serif:'Noto Serif SC','Songti SC','STSong','SimSun',Georgia,serif;

  --paper:#fafafa; --paper-2:#f4f4f4; --white:#ffffff;
  --ink:#101010; --ink-2:#4a4a4a; --muted:#6b6b6b; --muted-2:#8e8e8e;
  --line:#e2e2e2; --line-soft:#ececec;
  --night:#050505; --night-2:#0b0b0b;
  --n-ink:#f5f5f5; --n-ink2:#c7c7c7; --n-muted:#9a9a9a;
  --n-line:rgba(255,255,255,.14); --n-line-soft:rgba(255,255,255,.07);
  --accent:#5a4bc4; --accent-2:#8d80e6; --accent-soft:#f1eefb;
  --ease:cubic-bezier(.16,1,.3,1); --ease-2:cubic-bezier(.23,1,.32,1);

  --side-w:260px;
  --col:768px;
  --bg:var(--paper); --surface:var(--white);
  --fg:var(--ink); --fg-2:var(--ink-2); --fg-m:var(--muted); --fg-m2:var(--muted-2);
  --hair:var(--line); --hair-soft:var(--line-soft);
  --side-bg:var(--night); --side-fg:var(--n-ink); --side-fg2:#b9b9b9;
  --side-hair:var(--n-line); --side-hair-soft:var(--n-line-soft);
  --accent-text:var(--accent);
}
[data-theme="dark"]{
  --bg:var(--night); --surface:var(--night-2);
  --fg:var(--n-ink); --fg-2:var(--n-ink2); --fg-m:var(--n-muted); --fg-m2:#7a7a7a;
  --hair:var(--n-line); --hair-soft:var(--n-line-soft);
  --side-bg:#000; --side-fg:var(--n-ink); --side-fg2:#a8a8a8;
  --side-hair:var(--n-line); --side-hair-soft:var(--n-line-soft);
  --accent-text:#a99cf5; --accent-soft:rgba(90,75,196,.16); --white:#0f0f10;
}

*,*::before,*::after{box-sizing:border-box}
[hidden]{display:none !important}
html{-webkit-text-size-adjust:100%;-webkit-tap-highlight-color:transparent}
html,body{height:100%}
body{
  margin:0;background:var(--bg);color:var(--fg);
  font-family:var(--sans);font-size:15px;line-height:1.65;
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
  overflow:hidden;transition:background-color .3s,color .3s;
}
::selection{background:var(--accent);color:#fff}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
a{color:inherit;text-decoration:none}
svg{display:block}
.mono{font-family:var(--mono);font-size:10px;letter-spacing:.14em;text-transform:uppercase}

/* ── 骨架 ─────────────────────────────────────────────── */
.app{display:flex;height:100dvh;overflow:hidden}

/* ── 侧栏 ─────────────────────────────────────────────── */
.side{
  flex:0 0 var(--side-w);width:var(--side-w);
  display:flex;flex-direction:column;min-height:0;
  background:var(--side-bg);color:var(--side-fg);
  border-right:1px solid var(--side-hair);
  transition:margin-left .34s var(--ease),background-color .3s;
}
.app.side-off .side{margin-left:calc(-1 * var(--side-w))}
.side-top{display:flex;align-items:center;gap:8px;padding:12px 12px 10px}
.side-brand{display:flex;align-items:center;gap:9px;min-width:0;flex:1 1 auto;padding:4px}
.brand-mark{
  flex:none;width:26px;height:26px;border-radius:2px;background:var(--accent);
  color:#fff;display:grid;place-items:center;
}
.brand-mark svg{width:14px;height:14px}
.brand-txt{display:flex;flex-direction:column;gap:3px;min-width:0;line-height:1}
.brand-name{font-size:14.5px;font-weight:500;letter-spacing:.04em}
.brand-name sup{font-size:8px;opacity:.5;margin-left:1px;vertical-align:super}
.brand-sub{font-family:var(--mono);font-size:8.5px;letter-spacing:.16em;text-transform:uppercase;color:#6d6d6d}
.side-toggle{
  flex:none;width:30px;height:30px;display:grid;place-items:center;
  border-radius:2px;color:var(--side-fg2);transition:background-color .16s,color .16s;
}
.side-toggle svg{width:16px;height:16px}
@media (hover:hover) and (pointer:fine){ .side-toggle:hover{background:rgba(255,255,255,.06);color:#fff} }

.side-actions{padding:0 12px 10px}
.side-new{
  width:100%;display:flex;align-items:center;gap:9px;
  height:38px;padding:0 11px;border:1px solid var(--side-hair);border-radius:2px;
  color:var(--side-fg);font-size:12.5px;letter-spacing:.03em;
  transition:background-color .2s,color .2s,border-color .2s;
}
.side-new svg{width:14px;height:14px;flex:none;opacity:.75;transition:transform .25s var(--ease)}
.side-new em{margin-left:auto;font-family:var(--mono);font-size:9px;font-style:normal;letter-spacing:.1em;opacity:.4}
@media (hover:hover) and (pointer:fine){
  .side-new:hover{background:#fff;border-color:#fff;color:#101010}
  .side-new:hover svg{transform:rotate(90deg);opacity:1}
}

.side-search{
  display:flex;align-items:center;gap:8px;margin:0 12px 8px;padding:0 10px;
  height:32px;border:1px solid transparent;border-radius:2px;background:rgba(255,255,255,.05);
  transition:background-color .16s,border-color .16s;
}
.side-search:focus-within{background:transparent;border-color:var(--side-hair)}
.side-search svg{width:13px;height:13px;flex:none;opacity:.45}
.side-search input{
  flex:1 1 auto;min-width:0;border:0;outline:0;background:none;color:var(--side-fg);
  font-family:inherit;font-size:12px;
}
.side-search input::placeholder{color:#6d6d6d}

.side-list{flex:1 1 auto;min-height:0;overflow-y:auto;padding:4px 8px 12px;scrollbar-width:thin}
.side-list::-webkit-scrollbar{width:6px}
.side-list::-webkit-scrollbar-thumb{background:rgba(255,255,255,.14)}
.group-label{
  padding:14px 8px 6px;color:#6d6d6d;
  font-family:var(--mono);font-size:9px;letter-spacing:.16em;text-transform:uppercase;
}
.conv{
  position:relative;width:100%;display:flex;align-items:center;gap:8px;
  padding:8px 8px 8px 10px;border-radius:2px;
  color:var(--side-fg2);font-size:12.5px;text-align:left;
  transition:background-color .16s,color .16s;
}
.conv + .conv{margin-top:1px}
.conv-t{flex:1 1 auto;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.conv-more{
  flex:none;width:22px;height:22px;display:grid;place-items:center;border-radius:2px;
  opacity:0;color:#9a9a9a;transition:opacity .14s,background-color .14s,color .14s;
}
.conv-more svg{width:14px;height:14px}
.conv.on{background:rgba(255,255,255,.07);color:var(--side-fg)}
.conv.on::before{content:"";position:absolute;left:0;top:7px;bottom:7px;width:2px;background:var(--accent-2)}
@media (hover:hover) and (pointer:fine){
  .conv:hover{background:rgba(255,255,255,.045);color:var(--side-fg)}
  .conv:hover .conv-more,.conv.on .conv-more{opacity:1}
  .conv-more:hover{background:rgba(255,255,255,.1);color:#fff}
}

.side-foot{flex:none;padding:8px 8px 10px;border-top:1px solid var(--side-hair-soft)}
.side-item{
  width:100%;display:flex;align-items:center;gap:9px;padding:8px 10px;border-radius:2px;
  color:var(--side-fg2);font-size:12px;text-align:left;
  transition:background-color .16s,color .16s;
}
.side-item svg{width:14px;height:14px;flex:none;opacity:.6}
.side-item .r{margin-left:auto;font-family:var(--mono);font-size:9px;letter-spacing:.06em;opacity:.36}
@media (hover:hover) and (pointer:fine){ .side-item:hover{background:rgba(255,255,255,.045);color:var(--side-fg)} }

.account{
  display:flex;align-items:center;gap:9px;margin-top:6px;padding:8px 10px 6px;
  border-top:1px solid var(--side-hair-soft);
}
.ava{
  flex:none;width:26px;height:26px;border-radius:2px;
  background:rgba(255,255,255,.09);color:var(--side-fg);
  display:grid;place-items:center;
  font-family:var(--mono);font-size:10px;letter-spacing:.04em;
}
.acc-txt{display:flex;flex-direction:column;gap:2px;min-width:0;line-height:1.25}
.acc-txt b{font-size:12px;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.acc-txt span{font-size:10px;color:#6d6d6d;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.plan-tag{
  margin-left:auto;flex:none;font-family:var(--mono);font-size:8.5px;letter-spacing:.14em;
  padding:3px 5px;border:1px solid var(--side-hair);color:#9a8ef0;
}
.side-scrim{display:none}

/* ── 主区 ─────────────────────────────────────────────── */
.main{position:relative;flex:1 1 auto;min-width:0;min-height:0;display:flex;flex-direction:column;background:var(--bg)}
.top{
  position:relative;z-index:6;flex:none;display:flex;align-items:center;gap:10px;
  height:54px;padding:0 18px;border-bottom:1px solid var(--hair);
  background:color-mix(in srgb,var(--bg) 88%,transparent);
  backdrop-filter:blur(14px) saturate(1.2);-webkit-backdrop-filter:blur(14px) saturate(1.2);
}
.icon-btn{
  width:32px;height:32px;flex:none;display:grid;place-items:center;
  border:1px solid transparent;border-radius:2px;color:var(--fg-m);
  transition:color .16s,border-color .16s,background-color .16s;
}
.icon-btn svg{width:16px;height:16px}
@media (hover:hover) and (pointer:fine){ .icon-btn:hover{color:var(--fg);border-color:var(--hair);background:var(--surface)} }
.top-mid{flex:1 1 auto;display:flex;align-items:center;justify-content:center;gap:8px;min-width:0}
.model-btn{
  display:inline-flex;align-items:center;gap:8px;height:32px;padding:0 10px;
  border:1px solid transparent;border-radius:2px;font-size:13px;color:var(--fg);
  transition:border-color .16s,background-color .16s;
}
.model-btn svg{width:12px;height:12px;opacity:.5;transition:transform .22s var(--ease)}
@media (hover:hover) and (pointer:fine){ .model-btn:hover{background:var(--surface);border-color:var(--hair)} }

/* 滚动区 */
.stack{
  position:relative;z-index:2;flex:1 1 auto;min-height:0;
  overflow-y:auto;overflow-x:hidden;scrollbar-width:thin;
  display:flex;flex-direction:column;
}
.stack::-webkit-scrollbar{width:9px}
.stack::-webkit-scrollbar-thumb{background:var(--hair);border:3px solid transparent;background-clip:content-box}
.main:not(.has-msgs) .stack{justify-content:center}

/* 空态 */
.hello{width:100%;max-width:var(--col);margin:0 auto;padding:0 20px 18px;text-align:center}
.hello-k{font-family:var(--mono);font-size:9.5px;letter-spacing:.2em;text-transform:uppercase;color:var(--fg-m2);margin-bottom:18px}
.hello h1{
  margin:0;font-size:clamp(26px,3.4vw,38px);font-weight:300;letter-spacing:-.025em;line-height:1.2;
  color:var(--fg);
}
.hello h1 em{font-family:var(--serif);font-style:italic;font-weight:400;color:var(--accent-text);padding:0 .04em}
.hello-sub{margin-top:12px;font-size:12.5px;line-height:1.8;color:var(--fg-m)}
.chips{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin:22px auto 0;max-width:560px}
.chip{
  display:flex;align-items:center;gap:10px;padding:11px 13px;text-align:left;
  border:1px solid var(--hair);border-radius:2px;background:transparent;
  font-size:12px;color:var(--fg-2);
  transition:border-color .18s,background-color .18s,color .18s;
}
.chip svg{width:14px;height:14px;flex:none;opacity:.55}
@media (hover:hover) and (pointer:fine){ .chip:hover{border-color:var(--accent);color:var(--fg);background:var(--surface)} }

/* 消息 */
.msgs{width:100%;max-width:var(--col);margin:0 auto;padding:24px 20px 26px}
.msg{padding:16px 0;animation:fadeUp .28s var(--ease) both}
.msg + .msg{border-top:1px solid var(--hair-soft)}
.msg.user{display:flex;justify-content:flex-end}
.msg.user .bubble{
  max-width:min(560px,90%);padding:10px 15px;
  background:var(--fg);color:var(--bg);border-radius:2px;
  font-size:13.8px;line-height:1.75;white-space:pre-wrap;word-break:break-word;
}
.msg.ai .ai-head{display:flex;align-items:center;gap:9px;margin-bottom:10px}
.ai-dot{width:18px;height:18px;border-radius:2px;background:var(--accent);display:grid;place-items:center;color:#fff}
.ai-dot svg{width:11px;height:11px}
.ai-name{font-size:12.5px;font-weight:500;letter-spacing:.02em}
.ai-model{font-family:var(--mono);font-size:9px;letter-spacing:.12em;text-transform:uppercase;color:var(--fg-m2);border-left:1px solid var(--hair);padding-left:9px}
.ai-body{font-size:13.8px;line-height:1.82;color:var(--fg)}

/* 思考折叠 */
.think{border:1px solid var(--hair);border-radius:2px;margin-bottom:12px}
.think>summary{
  display:flex;align-items:center;gap:8px;padding:8px 12px;list-style:none;cursor:pointer;
  font-family:var(--mono);font-size:9.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--fg-m2);
}
.think>summary::-webkit-details-marker{display:none}
.think>summary svg{width:12px;height:12px;flex:none;opacity:.7}
.think>summary .chev{margin-left:auto;transition:transform .22s var(--ease)}
.think[open]>summary{border-bottom:1px solid var(--hair-soft);color:var(--fg-m)}
.think[open]>summary .chev{transform:rotate(90deg)}
.think-body{padding:11px 13px;font-size:12.5px;line-height:1.8;color:var(--fg-m);white-space:pre-wrap}

/* markdown */
.md p{margin:0 0 13px}
.md p:last-child{margin-bottom:0}
.md h3{margin:18px 0 10px;font-size:14.5px;font-weight:500}
.md strong{font-weight:500}
.md a{color:var(--accent-text);border-bottom:1px solid currentColor}
.md code{font-family:var(--mono);font-size:12px;background:var(--paper-2);padding:1px 5px;border:1px solid var(--hair-soft)}
[data-theme="dark"] .md code{background:rgba(255,255,255,.06);border-color:transparent}
.md ul,.md ol{margin:0 0 13px;padding-left:20px}
.md li{margin:4px 0}
.md blockquote{margin:0 0 13px;padding:2px 0 2px 12px;border-left:2px solid var(--hair);color:var(--fg-m)}
.md pre{
  position:relative;margin:0 0 15px;background:var(--night);color:#d8d8d8;
  border:1px solid var(--hair);border-radius:2px;overflow:hidden;
}
.md pre .code-bar{
  display:flex;align-items:center;justify-content:space-between;
  height:33px;padding:0 12px;border-bottom:1px solid rgba(255,255,255,.1);
}
.md pre .code-lang{font-family:var(--mono);font-size:9px;letter-spacing:.14em;text-transform:uppercase;color:#7a7a7a}
.md pre .code-copy{display:inline-flex;align-items:center;gap:6px;font-size:10.5px;color:#8a8a8a;transition:color .16s}
.md pre .code-copy svg{width:12px;height:12px}
@media (hover:hover) and (pointer:fine){ .md pre .code-copy:hover{color:#fff} }
.md pre code{display:block;padding:13px 15px;background:none;border:0;font-family:var(--mono);font-size:12px;line-height:1.75;color:#d8d8d8;white-space:pre;overflow-x:auto}
.md table{width:100%;border-collapse:collapse;margin:0 0 15px;font-size:12.5px}
.md th,.md td{padding:7px 10px;text-align:left;border-bottom:1px solid var(--hair-soft);vertical-align:top}
.md th{font-family:var(--mono);font-size:9.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--fg-m2);border-bottom-color:var(--hair)}
.md tr:last-child td{border-bottom:0}

.caret{display:inline-block;width:7px;height:15px;background:var(--accent);vertical-align:-2px;animation:caret 1s steps(2) infinite}
@keyframes caret{0%,50%{opacity:1}51%,100%{opacity:0}}

/* AI 操作行 */
.acts{display:flex;align-items:center;gap:4px;margin-top:12px}
.act{
  width:28px;height:28px;display:grid;place-items:center;border-radius:2px;
  color:var(--fg-m2);transition:color .16s,background-color .16s;
}
.act svg{width:14px;height:14px}
.act.ok{color:var(--accent-text)}
@media (hover:hover) and (pointer:fine){ .act:hover{color:var(--fg);background:var(--surface)} }
.act-sep{width:1px;height:14px;background:var(--hair);margin:0 4px}

/* Composer */
.composer-wrap{
  position:relative;z-index:8;flex:none;width:100%;
  padding:6px 20px 12px;
  border-top:1px solid var(--hair-soft);
  background:var(--bg);
}
.main:not(.has-msgs) .composer-wrap{border-top:0;background:none;padding-top:0}
.composer{
  max-width:var(--col);margin:0 auto;
  border:1px solid var(--hair);border-radius:2px;background:var(--surface);
  box-shadow:0 1px 2px rgba(16,16,16,.03);
  transition:border-color .2s,box-shadow .2s,background-color .3s;
}
.composer:focus-within{border-color:var(--accent);box-shadow:0 2px 18px rgba(90,75,196,.10)}
[data-theme="dark"] .composer{box-shadow:none}
[data-theme="dark"] .composer:focus-within{box-shadow:0 0 0 1px rgba(141,128,230,.22)}
#input{
  display:block;width:100%;min-height:50px;max-height:190px;
  padding:14px 15px 4px;border:0;outline:0;resize:none;background:transparent;
  color:var(--fg);font-family:inherit;font-size:13.8px;line-height:1.7;
}
#input::placeholder{color:var(--fg-m2)}
.composer-bar{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:4px 7px 7px}
.cb-left{display:flex;align-items:center;gap:4px;min-width:0}
.cb-right{display:flex;align-items:center;gap:7px;flex:none}
.tool{
  width:30px;height:30px;display:grid;place-items:center;border-radius:2px;
  color:var(--fg-m);transition:color .16s,background-color .16s;
}
.tool svg{width:15px;height:15px}
@media (hover:hover) and (pointer:fine){ .tool:hover{color:var(--fg);background:var(--bg)} }
.send{
  width:32px;height:32px;border-radius:2px;display:grid;place-items:center;
  background:var(--fg);color:var(--bg);
  transition:background-color .18s,transform .2s var(--ease),opacity .18s;
}
.send svg{width:15px;height:15px}
.send[disabled]{opacity:.4;cursor:default}
@media (hover:hover) and (pointer:fine){
  .send:not([disabled]):hover{background:var(--accent);color:#fff}
  .send:not([disabled]):active{transform:scale(.94)}
}
.stop{width:32px;height:32px;border-radius:2px;display:grid;place-items:center;border:1px solid var(--hair);color:var(--fg-2)}
.stop i{width:9px;height:9px;background:var(--accent);border-radius:1px}
.fine{
  max-width:var(--col);margin:8px auto 0;text-align:center;
  font-family:var(--mono);font-size:8.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--fg-m2);
}
.bubble-err{
  border:1px solid var(--hair);border-left:2px solid var(--accent);
  background:var(--accent-soft);padding:10px 12px;border-radius:2px;
  font-size:12.5px;line-height:1.7;color:var(--fg-2);
}
.bubble-err b{font-weight:500;color:var(--fg)}

/* toast */
.toasts{position:fixed;left:50%;bottom:26px;transform:translateX(-50%);z-index:200;display:flex;flex-direction:column;gap:8px;align-items:center;pointer-events:none}
.toast{
  padding:9px 14px;background:var(--ink);color:var(--paper);
  font-size:12px;border-radius:2px;box-shadow:0 12px 30px rgba(0,0,0,.22);
  animation:toastIn .26s var(--ease) both;
}
[data-theme="dark"] .toast{background:#f5f5f5;color:#0b0b0b}

@keyframes fadeUp{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
@keyframes toastIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

/* 模型菜单浮层 */
.pop{
  position:fixed;z-index:140;width:300px;max-width:calc(100vw - 24px);
  background:var(--surface);border:1px solid var(--hair);border-radius:2px;
  box-shadow:0 20px 44px rgba(16,16,16,.16);
  opacity:0;visibility:hidden;transform:translateY(6px);
  transition:opacity .18s var(--ease),transform .18s var(--ease),visibility 0s .18s;
  max-height:min(60vh,420px);overflow:auto;
}
.pop.open{opacity:1;visibility:visible;transform:none;transition-delay:0s}
.pop-head{padding:10px 12px;border-bottom:1px solid var(--hair-soft);font-family:var(--mono);font-size:9px;letter-spacing:.14em;text-transform:uppercase;color:var(--fg-m2)}
.pop-item{width:100%;display:flex;align-items:center;gap:9px;padding:9px 12px;text-align:left;font-size:12.5px;color:var(--fg-2);transition:background-color .14s,color .14s}
.pop-item+.pop-item{border-top:1px solid var(--hair-soft)}
.pop-item.on{color:var(--fg);background:var(--accent-soft)}
.pop-item .prov{margin-left:auto;font-family:var(--mono);font-size:9px;letter-spacing:.1em;text-transform:uppercase;color:var(--fg-m2)}
@media (hover:hover) and (pointer:fine){ .pop-item:hover{background:var(--bg);color:var(--fg)} }
.pop-empty{padding:14px 12px;font-size:12px;color:var(--fg-m)}

/* ═══════════════ 仿 Codex 思考等级条（原样保留 + 变量映射） ═══════════════ */
:root{
  --dsw-font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",-apple-system,system-ui,sans-serif;
  --dsw-alias-label-primary:var(--fg);
  --dsw-alias-label-secondary:var(--fg-2);
  --dsw-alias-label-caption:var(--fg-m);
  --dsw-alias-interactive-bg-hover:rgba(16,16,16,.06);
  --dsw-alias-bg-layer-2:var(--surface);
  --dsw-alias-border-l1:var(--hair);
  --dsw-alias-border-l2:var(--hair);
  --dsw-specific-menu:var(--surface);
  --dsw-elevation-panel:0 20px 44px rgba(16,16,16,.14),0 2px 6px rgba(16,16,16,.06);
  --dsw-menu-backdrop-filter:blur(20px) saturate(1.7);
  --dsw-focus-ring-color:var(--accent);
  --dsw-alias-state-error-primary:#c0392b;
  --dsh-composer-model-text-display:inline;
  --dsh-composer-model-icon-display:none;
  --dsw-effort-fill:var(--accent);
}
[data-theme="dark"]{
  --dsw-alias-interactive-bg-hover:rgba(255,255,255,.08);
  --dsw-alias-bg-layer-2:#141416;
  --dsw-specific-menu:#141416;
  --dsw-elevation-panel:0 22px 48px rgba(0,0,0,.66),0 2px 8px rgba(0,0,0,.4);
  --dsw-menu-backdrop-filter:blur(20px) saturate(1.5);
  --dsw-focus-ring-color:#a99cf5;
  --dsw-alias-state-error-primary:#f28b82;
  --dsw-effort-fill:#7d6ee0;
}
.dsh-codex-reasoning-effort-slider-root{position:relative;display:inline-flex;font-family:var(--dsw-font-family);font-size:14px;letter-spacing:0}
.dsh-codex-reasoning-effort-slider-root *{box-sizing:border-box;corner-shape:round}
.dsh-codex-reasoning-effort-slider-root button{font:inherit;cursor:pointer;border:0}
.dsh-codex-reasoning-effort-slider-trigger{display:inline-flex;align-items:center;gap:5px;max-width:250px;height:28px;padding:0 7px;background:transparent;color:var(--dsw-alias-label-caption);border-radius:8px;font-size:13px!important;transition:background-color .16s,color .16s}
.dsh-codex-reasoning-effort-slider-trigger:hover{background:var(--dsw-alias-interactive-bg-hover);color:var(--dsw-alias-label-secondary)}
.dsh-codex-reasoning-effort-slider-trigger>.dsh-codex-reasoning-effort-slider-icon{transition:transform .18s ease}
.dsh-codex-reasoning-effort-slider-trigger[aria-expanded=true]>.dsh-codex-reasoning-effort-slider-icon{transform:rotate(180deg)}
.dsh-codex-reasoning-effort-slider-trigger[aria-busy=true]{opacity:.7}
.dsh-codex-reasoning-effort-slider-caption{display:var(--dsh-composer-model-text-display,inline);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:12px;color:var(--fg-m)}
.dsh-codex-reasoning-effort-slider-trigger.ultra .dsh-codex-reasoning-effort-slider-trigger-effort{color:#9c4ce3}
.dsh-codex-reasoning-effort-slider-compact{display:var(--dsh-composer-model-icon-display,none)}
.dsh-codex-reasoning-effort-slider-root button:disabled{cursor:default;opacity:.5}
.dsh-codex-reasoning-effort-slider-root button:focus-visible,.dsh-codex-reasoning-effort-slider-rail:focus-visible{outline:2px solid var(--dsw-focus-ring-color);outline-offset:2px}
.dsh-codex-reasoning-effort-slider-popup{position:fixed;bottom:var(--dsh-codex-reasoning-effort-slider-bottom,40px);left:var(--dsh-codex-reasoning-effort-slider-left,12px);width:272px;max-width:calc(100vw - 24px);height:var(--dsh-codex-reasoning-effort-slider-height,104px);max-height:calc(100vh - var(--dsh-codex-reasoning-effort-slider-bottom,40px) - 12px);padding:0;background:var(--dsw-specific-menu,var(--dsw-alias-bg-layer-2));border-radius:14px;box-shadow:var(--dsw-elevation-panel);backdrop-filter:var(--dsw-menu-backdrop-filter);z-index:120;transform-origin:bottom left;transition:opacity .18s ease,transform .18s ease,height .2s cubic-bezier(.2,.8,.2,1),visibility 0s}
.dsh-codex-reasoning-effort-slider-popup.closed{opacity:0;pointer-events:none;visibility:hidden;transform:translateY(5px) scale(.98);transition-delay:0s,0s,0s,.18s}
.dsh-codex-reasoning-effort-slider-pane{position:absolute;left:0;right:0;bottom:0;opacity:1;transform:translateY(0);transition:opacity .14s ease,transform .2s ease,visibility 0s}
.dsh-codex-reasoning-effort-slider-pane.hidden{opacity:0;pointer-events:none;visibility:hidden;transform:translateY(5px);transition-delay:0s,0s,.14s}
.dsh-codex-reasoning-effort-slider-main{height:104px}
.dsh-codex-reasoning-effort-slider-icon{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;flex:none}
.dsh-codex-reasoning-effort-slider-small{width:14px;height:14px}
.dsh-codex-reasoning-effort-slider-tool{position:absolute;top:7px;width:28px;height:28px;display:flex;align-items:center;justify-content:center;padding:0;background:transparent;border-radius:8px;color:var(--dsw-alias-label-caption)}
.dsh-codex-reasoning-effort-slider-tool:hover{background:var(--dsw-alias-interactive-bg-hover)}
.dsh-codex-reasoning-effort-slider-reset{right:7px}
.dsh-codex-reasoning-effort-slider-tool>.dsh-codex-reasoning-effort-slider-icon{width:16px;height:16px}
.dsh-codex-reasoning-effort-slider-model-link{position:absolute;left:43px;right:43px;top:8px;height:42px;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:2px 4px;background:transparent;border-radius:5px;transition:opacity .2s ease}
.dsh-codex-reasoning-effort-slider-model-link:hover{background:var(--dsw-alias-interactive-bg-hover)}
.dsh-codex-reasoning-effort-slider-heading{display:flex;gap:3px;justify-content:center;align-items:center;max-width:100%;height:20px;color:#3989e9;font-size:14px;line-height:20px}
.dsh-codex-reasoning-effort-slider-popup.ultra .dsh-codex-reasoning-effort-slider-heading{color:#9c4ce3}
.dsh-codex-reasoning-effort-slider-heading .dsh-codex-reasoning-effort-slider-icon{width:10px;height:10px;color:var(--dsw-alias-label-caption)}
.dsh-codex-reasoning-effort-slider-model{display:block;max-width:100%;height:18px;color:var(--dsw-alias-label-secondary);font-size:12px;line-height:18px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.dsh-codex-reasoning-effort-slider-tool,.dsh-codex-reasoning-effort-slider-warning{transition:opacity .2s ease}
.dsh-codex-reasoning-effort-slider-warning{position:absolute;left:29px;right:29px;top:20px;text-align:center;line-height:18px;font-size:13px;opacity:0;pointer-events:none}
.dsh-codex-reasoning-effort-slider-warning span{display:inline-block;background:linear-gradient(90deg,#a965dd 0%,#a965dd 42%,#653780 50%,#a965dd 58%,#a965dd 100%);background-size:300% 100%;background-position:0% 0;background-clip:text;-webkit-background-clip:text;color:transparent;-webkit-text-fill-color:transparent}
.dsh-codex-reasoning-effort-slider-popup.message .dsh-codex-reasoning-effort-slider-model-link,.dsh-codex-reasoning-effort-slider-popup.message .dsh-codex-reasoning-effort-slider-tool{opacity:0;pointer-events:none}
.dsh-codex-reasoning-effort-slider-popup.message .dsh-codex-reasoning-effort-slider-warning{opacity:1}
.dsh-codex-reasoning-effort-slider-popup.message .dsh-codex-reasoning-effort-slider-warning span{animation:dsh-codex-reasoning-effort-slider-sweep 1.1s linear .2s 1 both}
@keyframes dsh-codex-reasoning-effort-slider-sweep{from{background-position:100% 0}to{background-position:0% 0}}
.dsh-codex-reasoning-effort-slider-rail{position:absolute;left:12px;right:12px;top:65px;height:26px;border-radius:16px;background:var(--dsw-alias-border-l2);touch-action:none;cursor:grab}
.dsh-codex-reasoning-effort-slider-fill,.dsh-codex-reasoning-effort-slider-sparks{position:absolute;inset:0 auto 0 0;width:calc((100% - 30px)*var(--dsh-codex-reasoning-effort-slider-pos,0) + 15px);border-radius:13px 0 0 13px;overflow:hidden;pointer-events:none;transition:width .18s cubic-bezier(.2,.8,.2,1)}
.dsh-codex-reasoning-effort-slider-fill{background:var(--dsw-effort-fill,#3988f6)}
.dsh-codex-reasoning-effort-slider-popup.ultra .dsh-codex-reasoning-effort-slider-fill{background:linear-gradient(95deg,#3065de 0%,#7757ee 32%,#b052f1 53%,#7d42e7 76%,#5631d0 100%);background-size:155% 100%;animation:dsh-codex-reasoning-effort-slider-colorflow 3.8s ease-in-out infinite alternate}
.dsh-codex-reasoning-effort-slider-popup.ultra .dsh-codex-reasoning-effort-slider-fill:before{content:"";position:absolute;inset:-10px -40px;background:linear-gradient(100deg,transparent 18%,#ffffff08 35%,#ffffff30 48%,#ffffff06 66%,transparent 84%);animation:dsh-codex-reasoning-effort-slider-shimmer 4.5s ease-in-out infinite alternate}
@keyframes dsh-codex-reasoning-effort-slider-colorflow{from{background-position:0 0}to{background-position:100% 0}}
@keyframes dsh-codex-reasoning-effort-slider-shimmer{from{transform:translateX(-45%)}to{transform:translateX(45%)}}
.dsh-codex-reasoning-effort-slider-dot{position:absolute;top:11px;left:calc((100% - 30px)*var(--dsh-codex-reasoning-effort-slider-tick) + 15px);width:4px;height:4px;margin-left:-2px;border-radius:50%;background:var(--dsw-alias-label-caption);pointer-events:none;transition:opacity .18s ease .22s,transform .14s ease}
.dsh-codex-reasoning-effort-slider-dot.passed{background:#ffffff65}.dsh-codex-reasoning-effort-slider-dot.hovered{transform:scale(1.75)}
.dsh-codex-reasoning-effort-slider-popup.ultra .dsh-codex-reasoning-effort-slider-dot,.dsh-codex-reasoning-effort-slider-popup.fast-mode .dsh-codex-reasoning-effort-slider-dot.covered{opacity:0;transition-delay:0s}
.dsh-codex-reasoning-effort-slider-sparks{opacity:0;transition:width .18s cubic-bezier(.2,.8,.2,1),opacity .25s ease}
.dsh-codex-reasoning-effort-slider-popup.fast-mode .dsh-codex-reasoning-effort-slider-sparks{opacity:1;transition-delay:0s,.18s}
.dsh-codex-reasoning-effort-slider-popup.ultra .dsh-codex-reasoning-effort-slider-sparks{opacity:1}
.dsh-codex-reasoning-effort-slider-particles{display:block;width:var(--dsh-codex-reasoning-effort-slider-rail-width,248px);height:26px}
.dsh-codex-reasoning-effort-slider-knob{position:absolute;left:calc((100% - 30px)*var(--dsh-codex-reasoning-effort-slider-pos,0));top:-2px;width:30px;height:30px;border-radius:50%;background:var(--dsw-alias-bg-layer-2);box-shadow:var(--dsw-elevation-panel);border:.5px solid var(--dsw-alias-border-l1);pointer-events:none;transition:left .18s cubic-bezier(.2,.8,.2,1)}
.dsh-codex-reasoning-effort-slider-burst{position:absolute;left:calc(100% - 41px);top:-13px;width:52px;height:52px;pointer-events:none;z-index:4}
.dsh-codex-reasoning-effort-slider-tooltip{position:absolute;bottom:calc(100% + 4px);padding:6px 9px;white-space:nowrap;background:var(--dsw-alias-bg-layer-2);box-shadow:var(--dsw-elevation-panel);border-radius:8px;font-size:12px;line-height:18px;text-align:center;color:var(--dsw-alias-label-primary);opacity:0;pointer-events:none;transition:opacity .12s;z-index:130}
.dsh-codex-reasoning-effort-slider-tooltip span{color:var(--dsw-alias-label-secondary)}
.dsh-codex-reasoning-effort-slider-reset .dsh-codex-reasoning-effort-slider-tooltip{right:-15px}
.dsh-codex-reasoning-effort-slider-tool:hover .dsh-codex-reasoning-effort-slider-tooltip,.dsh-codex-reasoning-effort-slider-tool:focus-visible .dsh-codex-reasoning-effort-slider-tooltip{opacity:1}
.dsh-codex-reasoning-effort-slider-models{height:100%;padding:5px;overflow:auto;overscroll-behavior:contain}
.dsh-codex-reasoning-effort-slider-menu-title{display:flex;align-items:center;justify-content:space-between;height:24px;padding:0 8px;color:var(--dsw-alias-label-caption);font-size:12px}
.dsh-codex-reasoning-effort-slider-menu-back{display:flex;align-items:center;justify-content:center;flex:none;width:22px;height:22px;padding:0;border-radius:5px;background:transparent;color:inherit}
.dsh-codex-reasoning-effort-slider-menu-back:hover{background:var(--dsw-alias-interactive-bg-hover)}
.dsh-codex-reasoning-effort-slider-group{height:22px;padding:3px 8px;color:var(--dsw-alias-label-secondary);font-size:11px}
.dsh-codex-reasoning-effort-slider-option{width:100%;height:30px;display:flex;align-items:center;justify-content:space-between;gap:8px;text-align:left;padding:0 8px;border-radius:8px;background:transparent;color:var(--dsw-alias-label-primary);font-size:13px!important}
.dsh-codex-reasoning-effort-slider-option:hover,.dsh-codex-reasoning-effort-slider-option:focus-visible{background:var(--dsw-alias-interactive-bg-hover)}
.dsh-codex-reasoning-effort-slider-option-name{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;line-height:19px}
.dsh-codex-reasoning-effort-slider-status{padding:8px;color:var(--dsw-alias-label-secondary);font-size:11px;line-height:16px}
.dsh-codex-reasoning-effort-slider-error{position:absolute;top:7px;left:37px;right:37px;display:flex;align-items:center;gap:4px;padding:3px 5px;max-height:48px;background:var(--dsw-specific-menu,var(--dsw-alias-bg-layer-2));color:var(--dsw-alias-state-error-primary);border-radius:5px;z-index:5}
.dsh-codex-reasoning-effort-slider-error-text{overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
.dsh-codex-reasoning-effort-slider-sr{position:absolute;width:1px;height:1px;padding:0;overflow:hidden;clip-path:inset(50%);white-space:nowrap}
.dsh-codex-reasoning-effort-slider-noeffort{position:absolute;top:65px;left:12px;right:12px;text-align:center;font-size:12px;color:var(--dsw-alias-label-secondary)}
html.dsh-slider-dragging,html.dsh-slider-dragging *{cursor:grabbing !important;user-select:none}

/* ── 响应式 ───────────────────────────────────────────── */
@media (max-width:900px){
  :root{--side-w:272px}
  .side{
    position:fixed;left:0;top:0;bottom:0;z-index:40;
    transform:translateX(-100%);transition:transform .34s var(--ease);
    box-shadow:0 0 0 1px var(--side-hair);
  }
  .app.side-open .side{transform:none}
  .app.side-off .side{margin-left:0}
  .side-scrim{
    display:block;position:fixed;inset:0;z-index:35;background:rgba(5,5,5,.5);
    opacity:0;pointer-events:none;transition:opacity .28s;backdrop-filter:blur(2px);
  }
  .side-scrim.on{opacity:1;pointer-events:auto}
  .top{padding:0 12px}
  .composer-wrap{padding:8px 12px 10px}
  .msgs,.hello{padding-left:14px;padding-right:14px}
  .chips{grid-template-columns:1fr}
  .msg.user .bubble{max-width:94%}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
}