:root{
  --bg:#FFFFFF; --side:#F9F9F9; --surface:#F4F4F4; --surface-2:#EBEBEB;
  --text:#0D0D0D; --text-2:#5D5D5D; --text-3:#8E8E8E; --line:#E5E5E5;
  --accent:#10A37F; --accent-ink:#FFFFFF; --danger:#D93025;
  --code-bg:#1E1E1E; --code-text:#E6E6E6; --shadow:0 2px 12px rgba(0,0,0,.08);
  --radius:12px; --side-w:264px; --ease:cubic-bezier(.2,.7,.2,1);
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
}
[data-theme="dark"]{
  --bg:#212121; --side:#171717; --surface:#2F2F2F; --surface-2:#3A3A3A;
  --text:#ECECEC; --text-2:#B4B4B4; --text-3:#8A8A8A; --line:#2F2F2F;
  --shadow:0 2px 12px rgba(0,0,0,.4); --code-bg:#0D0D0D;
}
*{box-sizing:border-box}
html,body{height:100%;margin:0}
body{font-family:var(--font);color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased;font-size:15px;line-height:1.6}
button,input,textarea,select{font:inherit;color:inherit}
button{cursor:pointer}
a{color:var(--accent)}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
.hidden{display:none !important}
.muted{color:var(--text-3)}
.icon-btn{width:36px;height:36px;display:grid;place-items:center;border:0;background:none;border-radius:9px;color:var(--text-2)}
.icon-btn:hover{background:var(--surface);color:var(--text)}
.ico{width:18px;height:18px;flex:none}

/* ---------- Layout ---------- */
.app{display:grid;grid-template-columns:var(--side-w) 1fr;height:100dvh;transition:grid-template-columns .25s var(--ease)}
.app.collapsed{grid-template-columns:0 1fr}
.sidebar{position:relative;background:var(--side);display:flex;flex-direction:column;min-height:0;padding:10px;gap:8px;overflow:hidden}
.app.collapsed .sidebar{padding:0;border:0}
.side-top{display:flex;align-items:center;justify-content:space-between;padding:4px 4px 2px}
.brand{display:flex;align-items:center;gap:8px;font-weight:600;font-size:15px;padding:4px 6px;min-width:0}
.logo{width:26px;height:26px;border-radius:8px;background:var(--text);color:var(--bg);display:grid;place-items:center;font-size:13px;font-weight:700;flex:none}
.brand-name{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.new-chat{display:flex;align-items:center;gap:10px;padding:9px 10px;border:0;background:none;border-radius:10px;font-size:14.5px;color:var(--text);text-align:left}
.new-chat:hover,.nav-item:hover{background:var(--surface-2)}
.search{display:flex;align-items:center;gap:8px;padding:8px 10px;border-radius:10px;color:var(--text-3)}
.search input{border:0;background:none;outline:none;width:100%;font-size:14px;color:var(--text)}
.search:focus-within{background:var(--surface)}
.list{flex:1;min-height:0;overflow-y:auto;margin:0 -4px;padding:0 4px}
.group-label{font-size:12px;color:var(--text-3);padding:12px 10px 6px;font-weight:500}
.conv{display:flex;align-items:center;gap:4px;border-radius:10px;padding:0 4px 0 0;position:relative}
.conv:hover,.conv.active{background:var(--surface-2)}
.conv-title{flex:1;min-width:0;text-align:left;border:0;background:none;padding:8px 10px;font-size:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:var(--text)}
.conv-actions{display:none;gap:2px}
.conv:hover .conv-actions,.conv.active .conv-actions,.conv:focus-within .conv-actions{display:flex}
.conv-actions button{width:26px;height:26px;border:0;background:none;border-radius:7px;color:var(--text-2);display:grid;place-items:center}
.conv-actions button:hover{background:var(--bg);color:var(--text)}
.conv-actions .del:hover{color:var(--danger)}
.empty{font-size:13px;color:var(--text-3);padding:10px}
.side-foot{border-top:1px solid var(--line);padding-top:10px;display:flex;flex-direction:column;gap:6px}
.quota{font-size:12.5px;color:var(--text-3);padding:0 8px}
.quota-bar{height:4px;background:var(--surface-2);border-radius:4px;margin-top:6px;overflow:hidden}
.quota-bar span{display:block;height:100%;background:var(--accent);width:0;transition:width .3s}
.user-card{display:flex;align-items:center;gap:10px;padding:8px;border-radius:10px;cursor:pointer;border:0;background:none;text-align:left;width:100%}
.user-card:hover{background:var(--surface-2)}
.avatar{width:30px;height:30px;border-radius:50%;background:var(--accent);color:var(--accent-ink);display:grid;place-items:center;font-size:13px;font-weight:600;flex:none}
.user-meta{min-width:0;flex:1}
.user-name{font-size:14px;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.user-mail{font-size:12px;color:var(--text-3);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.menu{position:absolute;left:10px;right:10px;bottom:62px;background:var(--bg);border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);padding:6px;z-index:30}
.menu button{display:block;width:100%;text-align:left;border:0;background:none;padding:9px 10px;border-radius:8px;font-size:14px}
.menu button:hover{background:var(--surface)}
.menu .danger{color:var(--danger)}

.main{display:flex;flex-direction:column;min-width:0;min-height:0;position:relative}
.topbar{display:flex;align-items:center;gap:8px;padding:10px 14px;min-height:56px}
.model-pick{display:flex;align-items:center;gap:6px;border:0;background:none;padding:6px 10px;border-radius:10px;font-size:16px;font-weight:600}
.model-pick:hover{background:var(--surface)}
.model-select{appearance:none;border:0;background:transparent;font-size:16px;font-weight:600;padding:4px 6px;border-radius:8px;outline:none;max-width:260px}
.model-select:hover{background:var(--surface)}
.badge{font-size:12px;color:var(--text-3);border:1px solid var(--line);border-radius:999px;padding:2px 9px;font-weight:500}
.spacer{flex:1}
.thread{flex:1;overflow-y:auto;min-height:0;scroll-behavior:smooth}
.column{max-width:768px;margin:0 auto;padding:12px 20px 28px}

/* Welcome */
.welcome{padding:12vh 4px 10px;text-align:center}
.welcome h1{font-size:30px;font-weight:600;margin:0 0 6px;letter-spacing:-.01em}
.welcome p{margin:0;color:var(--text-2);font-size:16px}
.suggest{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin-top:34px}
.suggest button{text-align:left;border:1px solid var(--line);background:var(--bg);border-radius:14px;padding:14px 16px;font-size:14px;color:var(--text);transition:background .15s,border-color .15s}
.suggest button:hover{background:var(--surface);border-color:var(--surface-2)}
.suggest small{display:block;color:var(--text-3);font-size:12.5px;margin-top:4px}

/* Messages */
.msg{display:flex;gap:14px;padding:14px 0}
.msg.assistant .col{min-width:0;flex:1}
@keyframes fade{from{opacity:0;transform:translateY(4px)}to{opacity:1;transform:none}}
.msg.user{justify-content:flex-end}
.msg.user .bubble{background:var(--surface);padding:10px 16px;border-radius:20px;max-width:82%;white-space:pre-wrap;word-break:break-word}
.msg.assistant .mark{width:28px;height:28px;border-radius:50%;border:1px solid var(--line);display:grid;place-items:center;font-size:12px;font-weight:700;flex:none;margin-top:2px}
.msg.assistant .content{min-width:0;flex:1;word-break:break-word}
.msg.assistant .err-box{color:var(--danger);font-size:14px;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.actions{display:flex;gap:2px;margin-top:6px}
.actions button{border:0;background:none;color:var(--text-3);padding:5px 7px;border-radius:8px;display:inline-flex;align-items:center;gap:5px;font-size:12.5px}
.actions button:hover{background:var(--surface);color:var(--text)}
.caret{display:inline-block;width:8px;height:16px;background:var(--text);vertical-align:-2px;margin-left:2px;animation:blink 1s steps(2) infinite;border-radius:2px}
@keyframes blink{50%{opacity:0}}
.content p{margin:0 0 .85em}
.content p:last-child{margin-bottom:0}
.content h1,.content h2,.content h3{font-weight:600;line-height:1.35;margin:1.2em 0 .5em}
.content h1{font-size:1.35em}.content h2{font-size:1.2em}.content h3{font-size:1.05em}
.content ul,.content ol{padding-left:1.4em;margin:0 0 .85em}
.content li{margin:.2em 0}
.content blockquote{margin:0 0 .85em;padding-left:12px;border-left:3px solid var(--line);color:var(--text-2)}
.content code{font-family:var(--mono);font-size:.88em;background:var(--surface);padding:.15em .4em;border-radius:6px}
.content a{color:var(--accent)}
.codeblock{margin:.6em 0 1em;border-radius:12px;overflow:hidden;background:var(--code-bg);color:var(--code-text)}
.codeblock-head{display:flex;justify-content:space-between;align-items:center;padding:7px 12px;font-size:12.5px;color:#B4B4B4;background:rgba(255,255,255,.05)}
.codeblock-head button{border:0;background:none;color:#B4B4B4;font-size:12.5px;padding:2px 6px;border-radius:6px}
.codeblock-head button:hover{background:rgba(255,255,255,.1);color:#fff}
.codeblock pre{margin:0;padding:12px 14px;overflow-x:auto;font-family:var(--mono);font-size:13.5px;line-height:1.55}
.codeblock code{background:none;padding:0;font-size:inherit;color:inherit}

/* Composer */
.composer-wrap{padding:0 16px 14px;background:var(--bg)}
.composer{max-width:768px;margin:0 auto;display:flex;align-items:flex-end;gap:6px;background:var(--surface);border-radius:26px;padding:8px 8px 8px 16px;border:1px solid transparent;transition:border-color .2s,box-shadow .2s}
.composer:focus-within{border-color:var(--line);box-shadow:var(--shadow)}
.composer textarea{flex:1;resize:none;border:0;background:transparent;outline:none;font-size:16px;line-height:1.5;max-height:200px;padding:7px 0;min-width:0}
.composer textarea::placeholder{color:var(--text-3)}
.send{flex:none;width:36px;height:36px;border-radius:50%;border:0;background:var(--text);color:var(--bg);display:grid;place-items:center;transition:opacity .2s,transform .15s var(--ease)}
.send:active{transform:scale(.94)}
.send:disabled{opacity:.25;cursor:not-allowed}
.send.stop{background:var(--text)}
.fine{max-width:768px;margin:8px auto 0;text-align:center;font-size:12px;color:var(--text-3);min-height:1.2em}
.fine.err{color:var(--danger)}

/* Auth modal */
.modal-mask{position:fixed;inset:0;background:rgba(0,0,0,.4);display:grid;place-items:center;padding:20px;z-index:60}
.modal{width:min(400px,100%);background:var(--bg);border-radius:18px;padding:28px 28px 24px;box-shadow:0 20px 60px rgba(0,0,0,.25)}
.modal h2{margin:0 0 4px;font-size:22px;font-weight:600}
.modal .sub{color:var(--text-2);margin:0 0 18px;font-size:14px}
.tabs{display:flex;background:var(--surface);border-radius:10px;padding:3px;margin-bottom:16px}
.tabs button{flex:1;border:0;background:none;padding:7px;border-radius:8px;font-size:14px;color:var(--text-2)}
.tabs button.on{background:var(--bg);color:var(--text);box-shadow:0 1px 3px rgba(0,0,0,.08);font-weight:500}
.field{display:flex;flex-direction:column;gap:6px;margin-bottom:12px;font-size:13px;color:var(--text-2)}
.input{border:1px solid var(--line);background:var(--bg);border-radius:10px;padding:10px 12px;font-size:15px;color:var(--text);outline:none;width:100%}
.input:focus{border-color:var(--text-3)}
.btn{border:0;border-radius:10px;padding:10px 14px;font-size:14.5px;background:var(--surface);color:var(--text)}
.btn:hover:not(:disabled){background:var(--surface-2)}
.btn:disabled{opacity:.5;cursor:not-allowed}
.btn.primary{background:var(--text);color:var(--bg);width:100%;margin-top:4px}
.btn.primary:hover:not(:disabled){opacity:.88;background:var(--text)}
.btn.danger{color:var(--danger)}
.form-err{color:var(--danger);font-size:13px;min-height:1.2em;margin:4px 0 0}
.legal{font-size:12px;color:var(--text-3);margin:12px 0 0;text-align:center}
.modal-close{position:absolute;right:12px;top:12px}
.modal-wrap{position:relative;width:min(400px,100%)}

.toast{position:fixed;left:50%;bottom:90px;transform:translate(-50%,16px);background:var(--text);color:var(--bg);padding:9px 16px;border-radius:10px;font-size:14px;opacity:0;pointer-events:none;transition:opacity .25s,transform .25s var(--ease);z-index:80;max-width:90vw}
.toast.show{opacity:1;transform:translate(-50%,0)}
.scrim{display:none}

@media (max-width:860px){
  .app,.app.collapsed{grid-template-columns:1fr}
  .app.collapsed .sidebar{padding:10px}
  .sidebar{position:fixed;top:0;bottom:0;left:0;width:min(82vw,300px);z-index:40;transform:translateX(-102%);transition:transform .28s var(--ease);box-shadow:0 0 40px rgba(0,0,0,.2);padding:10px}
  .sidebar.open{transform:none}
  .scrim.show{display:block;position:fixed;inset:0;background:rgba(0,0,0,.3);z-index:35}
  .conv-actions{display:flex}
  .column{padding:8px 14px 24px}
  .msg.user .bubble{max-width:90%}
  .welcome{padding-top:8vh}
  .welcome h1{font-size:24px}
  .suggest{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:.01ms !important;transition-duration:.01ms !important}}


/* ---------- Admin ---------- */
.admin-body{background:var(--side)}
.login{min-height:100dvh;display:grid;place-items:center;padding:24px}
.login-card{width:min(380px,100%);background:var(--bg);border-radius:18px;padding:30px 28px;box-shadow:var(--shadow)}
.login-card h1{font-size:22px;font-weight:600;margin:18px 0 16px}
.login-card .field{margin-bottom:12px}
.login-card .btn.primary{margin-top:8px}
.admin{display:grid;grid-template-columns:230px 1fr;min-height:100dvh}
.admin-nav{background:var(--side);border-right:1px solid var(--line);padding:16px 12px;display:flex;flex-direction:column;gap:4px}
.admin-nav .nav-btn{text-align:left;border:0;background:none;padding:9px 12px;border-radius:9px;color:var(--text-2);font-size:14.5px;text-decoration:none;display:block}
.admin-nav .nav-btn:hover{background:var(--surface-2);color:var(--text)}
.admin-nav .nav-btn.active{background:var(--bg);color:var(--text);box-shadow:var(--shadow);font-weight:500}
.admin-nav .spacer{flex:1}
.who{font-size:12.5px;color:var(--text-3);padding:4px 12px 8px}
.admin-main{padding:30px 36px 60px;min-width:0;max-width:1100px;width:100%}
.admin-main h2{font-size:24px;font-weight:600;margin:0 0 4px}
.lede{color:var(--text-3);margin:0 0 22px;font-size:14px}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:12px}
.card{background:var(--bg);border:1px solid var(--line);border-radius:14px;padding:16px 18px}
.card .k{font-size:12.5px;color:var(--text-3)}
.card .v{font-size:30px;font-weight:600;margin-top:4px;font-variant-numeric:tabular-nums}
.mode{margin-top:16px;font-size:14px;color:var(--text-2)}
.toolbar{display:flex;gap:10px;margin-bottom:12px;flex-wrap:wrap;align-items:center}
.toolbar .input{max-width:360px}
.table-wrap{background:var(--bg);border:1px solid var(--line);border-radius:14px;overflow-x:auto}
table{width:100%;border-collapse:collapse;font-size:14px}
th,td{text-align:left;padding:11px 14px;border-bottom:1px solid var(--line);white-space:nowrap;max-width:300px;overflow:hidden;text-overflow:ellipsis}
th{font-size:12px;color:var(--text-3);font-weight:500}
tbody tr.clk{cursor:pointer}
tbody tr.clk:hover{background:var(--surface)}
td.num{font-variant-numeric:tabular-nums}
td .mini{border:0;background:none;color:var(--accent);padding:3px 6px;border-radius:6px;font-size:13px}
td .mini:hover{background:var(--surface)}
td .mini.danger{color:var(--danger)}
.tag{font-size:12px;border-radius:999px;padding:2px 8px;background:var(--surface);color:var(--text-2)}
.tag.off{color:var(--danger)}
.pager{display:flex;align-items:center;gap:10px;justify-content:flex-end;margin-top:12px;font-size:13px;color:var(--text-3)}
.detail{margin-top:20px;background:var(--bg);border:1px solid var(--line);border-radius:14px;padding:18px 20px}
.detail-head{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:8px}
.detail-head h3{font-size:18px;font-weight:600;margin:0}
.log-row{padding:12px 0;border-top:1px solid var(--line)}
.log-role{font-size:12.5px;color:var(--text-3);margin-bottom:4px}
.log-text{white-space:pre-wrap;word-break:break-word}
.form{display:flex;flex-direction:column;gap:14px;max-width:640px;background:var(--bg);border:1px solid var(--line);border-radius:14px;padding:22px 24px}
.form .field{margin:0}
.form .field textarea{font:inherit;color:var(--text);background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:10px 12px;min-height:90px;resize:vertical;outline:none}
.form .hint{font-size:12.5px;color:var(--text-3);margin:-6px 0 0}
.check{flex-direction:row;align-items:center;gap:10px;font-size:14px;color:var(--text)}
.form-actions{display:flex;justify-content:flex-end}
.form .btn.primary{width:auto;padding:10px 20px}
.btn.sm{padding:6px 12px;font-size:13.5px}
.btn.danger-ghost{color:var(--danger);background:none}
.btn.danger-ghost:hover{background:rgba(217,48,37,.08)}
.admin-main .toast{}
@media (max-width:860px){
  .admin{grid-template-columns:1fr}
  .admin-nav{flex-direction:row;flex-wrap:wrap;align-items:center;padding:10px}
  .admin-nav .spacer,.who{display:none}
  .admin-main{padding:20px 16px 60px}
}
.msg.assistant .mark{display:none}

/* ---------- Code blocks (refined) ---------- */
.content .codeblock{margin:.9em 0 1.1em;border-radius:14px;overflow:hidden;background:#101010;border:1px solid rgba(255,255,255,.08);box-shadow:0 1px 2px rgba(0,0,0,.12)}
.content .codeblock-head{display:flex;justify-content:space-between;align-items:center;padding:7px 8px 7px 14px;background:#1B1B1B;border-bottom:1px solid rgba(255,255,255,.07);font-size:12px;color:#A3A3A3}
.content .codeblock-head span{font-family:var(--mono);font-weight:500;letter-spacing:.02em}
.content .codeblock-head button{display:inline-flex;align-items:center;gap:6px;border:0;background:rgba(255,255,255,.06);color:#CFCFCF;font-size:12px;padding:4px 10px;border-radius:8px;transition:background .15s,color .15s}
.content .codeblock-head button:hover{background:rgba(255,255,255,.14);color:#fff}
.content .codeblock-head .ico{width:14px;height:14px}
.content .codeblock pre{margin:0;padding:16px 18px;overflow-x:auto;font-family:var(--mono);font-size:13.5px;line-height:1.7;color:#E8E8E8;tab-size:2;scrollbar-width:thin;scrollbar-color:#3A3A3A transparent}
.content .codeblock pre code{background:none;padding:0;font-size:inherit;color:inherit;font-family:inherit;border-radius:0}
@media (max-width:860px){.content .codeblock pre{font-size:13px;padding:14px 14px}}

.content .codeblock{position:relative}
.content .codeblock-actions{display:flex;align-items:center;gap:6px}
.content .codeblock.collapsible:not(.expanded) pre{max-height:240px;overflow:hidden}
.content .codeblock.collapsible:not(.expanded)::after{content:"";position:absolute;left:0;right:0;bottom:0;height:70px;background:linear-gradient(to bottom,rgba(16,16,16,0),#101010 85%);pointer-events:none}

/* ---------- Composer toolbar ---------- */
.composer{flex-direction:column;align-items:stretch;gap:6px;border-radius:26px;padding:10px 10px 8px 16px}
.composer textarea{width:100%;padding:6px 0 4px}
.composer-bar{display:flex;align-items:center;justify-content:space-between;gap:8px}
.tools{display:flex;align-items:center;gap:6px;min-width:0;flex-wrap:wrap}
.tool-btn{width:34px;height:34px;border:0;border-radius:50%;background:transparent;color:var(--text-2);display:grid;place-items:center}
.tool-btn:hover{background:var(--surface-2);color:var(--text)}
.chip{border:1px solid var(--line);background:var(--bg);color:var(--text-2);border-radius:999px;padding:5px 12px;font-size:13px;white-space:nowrap}
.chip:hover{color:var(--text);border-color:var(--text-3)}
.chip.on{color:var(--accent);border-color:rgba(16,163,127,.45);background:rgba(16,163,127,.08)}
.think-wrap{position:relative}
.pop{position:absolute;bottom:calc(100% + 8px);left:0;background:var(--bg);border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);padding:6px;min-width:120px;z-index:20}
.pop button{display:block;width:100%;text-align:left;border:0;background:none;padding:8px 10px;border-radius:8px;font-size:14px;color:var(--text)}
.pop button:hover{background:var(--surface)}
.pop button.on{color:var(--accent);font-weight:600}
.att-row{display:flex;gap:10px;flex-wrap:wrap;padding:4px 4px 0}
.att{position:relative;width:64px;height:64px;border-radius:12px;overflow:hidden;border:1px solid var(--line);background:var(--surface)}
.att img{width:100%;height:100%;object-fit:cover;display:block}
.att.loading img{opacity:.45}
.att.loading::after{content:"";position:absolute;inset:0;margin:auto;width:18px;height:18px;border:2px solid var(--text-3);border-top-color:transparent;border-radius:50%;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.att-x{position:absolute;top:3px;right:3px;width:20px;height:20px;border-radius:50%;border:0;background:rgba(0,0,0,.6);color:#fff;font-size:13px;line-height:20px;padding:0}

/* ---------- User messages with images ---------- */
.user-col{display:flex;flex-direction:column;align-items:flex-end;gap:6px;max-width:82%;min-width:0}
.user-col .bubble{max-width:100%}
.user-imgs{display:flex;flex-wrap:wrap;gap:8px;justify-content:flex-end}
.user-imgs img{max-width:220px;max-height:220px;border-radius:16px;object-fit:cover;border:1px solid var(--line);display:block}
.msg.user .bubble{max-width:100%}

/* ---------- Thinking & sources ---------- */
details.think{margin:0 0 12px}
details.think summary{cursor:pointer;list-style:none;display:inline-flex;align-items:center;gap:6px;padding:4px 11px;border-radius:999px;background:var(--surface);font-size:13px;color:var(--text-2);user-select:none}
details.think summary::-webkit-details-marker{display:none}
details.think summary::before{content:"";width:6px;height:6px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:rotate(-45deg);margin-right:2px;transition:transform .2s}
details.think[open] summary::before{transform:rotate(45deg)}
details.think .think-body{margin-top:8px;padding:2px 0 2px 14px;border-left:2px solid var(--line);white-space:pre-wrap;color:var(--text-3);font-size:13.5px;line-height:1.7;max-height:320px;overflow:auto}
.sources{display:flex;flex-wrap:wrap;gap:6px;margin:10px 0 2px}
.source{display:inline-flex;align-items:center;gap:7px;max-width:280px;padding:4px 11px 4px 4px;border:1px solid var(--line);border-radius:999px;font-size:12.5px;color:var(--text-2);text-decoration:none;background:var(--bg)}
.source:hover{background:var(--surface);color:var(--text)}
.source .n{flex:none;width:20px;height:20px;border-radius:50%;background:var(--surface-2);display:grid;place-items:center;font-size:11px;color:var(--text-2)}
.source .t{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.status{color:var(--text-3);font-size:14px}

/* ---------- Sidebar user area (simplified) ---------- */
.side-foot{border-top:0;padding-top:6px}
.me-row{display:block}
.me{display:flex;align-items:center;gap:10px;width:100%;border:0;background:none;padding:8px 10px;border-radius:12px;text-align:left}
.me:hover{background:var(--surface-2)}
.avatar{width:30px;height:30px;border-radius:50%;background:var(--surface-2);color:var(--text-2);display:grid;place-items:center;font-size:13px;font-weight:600;flex:none}
.me-meta{display:flex;flex-direction:column;min-width:0;line-height:1.35}
.me-name{font-size:14px;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.me-sub{font-size:12px;color:var(--text-3)}
.menu{left:8px;right:8px;bottom:64px;border-radius:14px;padding:6px}
.menu button{display:flex;align-items:center;padding:9px 12px}

/* ---------- Settings panel ---------- */
.settings{width:min(560px,100%);max-height:min(84vh,760px);background:var(--bg);border-radius:20px;box-shadow:0 24px 70px rgba(0,0,0,.28);display:flex;flex-direction:column;overflow:hidden}
.set-head{display:flex;align-items:center;justify-content:space-between;padding:18px 20px 8px 24px}
.set-head h2{margin:0;font-size:18px;font-weight:600}
.set-body{overflow-y:auto;padding:4px 20px 26px 24px}
.set-sec{margin-top:18px}
.set-sec h3{font-size:12.5px;font-weight:500;color:var(--text-3);margin:0 0 8px 2px}
.card-list{border:1px solid var(--line);border-radius:14px;overflow:hidden;background:var(--bg)}
.set-row{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:12px 14px;border-top:1px solid var(--line);flex-wrap:wrap}
.set-row:first-child{border-top:0}
.set-label{font-size:14.5px;color:var(--text);min-width:0}
.set-label small{display:block;font-size:12.5px;color:var(--text-3);margin-top:2px;line-height:1.5}
.seg{display:inline-flex;background:var(--surface);border-radius:10px;padding:3px;gap:2px;flex-wrap:wrap}
.seg button{border:0;background:none;padding:5px 11px;border-radius:8px;font-size:13px;color:var(--text-2)}
.seg button:hover{color:var(--text)}
.seg button.on{background:var(--bg);color:var(--text);box-shadow:0 1px 3px rgba(0,0,0,.12);font-weight:500}
.switch{position:relative;width:42px;height:24px;flex:none;display:inline-block}
.switch input{position:absolute;opacity:0;width:0;height:0;margin:0}
.switch span{position:absolute;inset:0;border-radius:999px;background:var(--surface-2);transition:background .2s;cursor:pointer}
.switch span::after{content:"";position:absolute;left:3px;top:3px;width:18px;height:18px;border-radius:50%;background:#fff;box-shadow:0 1px 2px rgba(0,0,0,.2);transition:transform .25s var(--ease)}
.switch input:checked + span{background:var(--accent)}
.switch input:checked + span::after{transform:translateX(18px)}
.switch input:focus-visible + span{outline:2px solid var(--accent);outline-offset:2px}
.set-inline{display:flex;gap:8px;align-items:center;flex:1;max-width:330px;justify-content:flex-end;min-width:0}
.set-inline .input{flex:1;min-width:0;width:auto}
.pw-area{width:100%;display:flex;flex-direction:column;gap:8px;padding-top:6px}
.pw-area .input{width:100%}
.btn.danger{color:var(--danger)}
html[data-font="s"] body{font-size:14px}
html[data-font="l"] body{font-size:16.5px}
@media (max-width:860px){
  .settings{max-height:92vh;border-radius:18px}
  .set-row{flex-direction:column;align-items:flex-start}
  .set-row .switch{align-self:flex-end}
  .set-inline{max-width:none;width:100%}
}

/* ---------- Markdown details ---------- */
.content h4{font-size:1.02em;font-weight:600;margin:1.1em 0 .4em;line-height:1.4}
.content h5{font-size:.98em;font-weight:600;margin:1em 0 .4em;line-height:1.4}
.content h6{font-size:.94em;font-weight:600;margin:1em 0 .4em;line-height:1.4;color:var(--text-2)}
.content hr{border:0;border-top:1px solid var(--line);margin:1.3em 0}
.content del{color:var(--text-3)}
.content em{font-style:italic}
.content .md-table{overflow-x:auto;margin:.6em 0 1em;border:1px solid var(--line);border-radius:12px;max-width:100%}
.content table{border-collapse:collapse;width:100%;font-size:14.5px;line-height:1.5}
.content th,.content td{padding:9px 12px;border-bottom:1px solid var(--line);vertical-align:top;text-align:left;min-width:72px}
.content th{background:var(--surface);font-weight:600}
.content tr:last-child td{border-bottom:0}
.content ul,.content ol{margin-left:0;padding-left:1.4em}
.content ul ul,.content ol ol,.content ul ol,.content ol ul{margin-top:.25em;margin-bottom:.25em}
.content li{margin:.2em 0}
.content li.task{list-style:none;margin-left:-1.25em}
.content li.task input{margin:0 .5em 0 0;accent-color:var(--accent);vertical-align:-1px}
.content blockquote{margin:.4em 0 .9em;padding:2px 0 2px 14px;border-left:3px solid var(--line);color:var(--text-2)}
.content blockquote p:last-child{margin-bottom:0}
.content a{color:var(--accent);text-decoration:none;border-bottom:1px solid rgba(16,163,127,.35)}
.content a:hover{border-bottom-color:var(--accent)}

/* ---------- Image creation ---------- */
.img-msg .col{display:flex;flex-direction:column;align-items:flex-start;min-width:0}
.img-frame{margin:0;max-width:100%}
.img-frame img{display:block;max-width:min(100%,520px);max-height:620px;border-radius:18px;border:1px solid var(--line);cursor:zoom-in;background:var(--surface)}
.img-loading{display:flex;align-items:center;gap:12px;padding:16px 18px;border:1px dashed var(--line);border-radius:16px;color:var(--text-2);font-size:14px;min-width:min(100%,300px)}
.spinner{width:18px;height:18px;border:2px solid var(--line);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite;flex:none}
.act-link{display:inline-flex;align-items:center;gap:6px;border:0;background:none;padding:5px 8px;border-radius:8px;font-size:12.5px;color:var(--text-3);text-decoration:none;cursor:pointer}
.act-link:hover{background:var(--surface);color:var(--text)}
.act-link .ico{width:15px;height:15px}
.send:disabled{opacity:.35}

/* ---------- Settings (two-column) ---------- */
.sx{width:min(780px,100%);height:min(640px,88vh);background:var(--bg);border-radius:20px;box-shadow:0 24px 70px rgba(0,0,0,.28);display:grid;grid-template-columns:200px 1fr;overflow:hidden}
.sx-nav{background:var(--side);border-right:1px solid var(--line);padding:18px 12px;display:flex;flex-direction:column;gap:2px;min-height:0}
.sx-nav-title{font-size:15px;font-weight:600;padding:4px 10px 14px}
.sx-tab{display:flex;align-items:center;gap:10px;border:0;background:none;padding:9px 10px;border-radius:10px;color:var(--text-2);font-size:14px;text-align:left}
.sx-tab:hover{background:var(--surface-2);color:var(--text)}
.sx-tab.on{background:var(--bg);color:var(--text);box-shadow:var(--shadow);font-weight:500}
.sx-tab svg{width:17px;height:17px;flex:none}
.sx-main{display:flex;flex-direction:column;min-width:0;min-height:0}
.sx-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;padding:22px 26px 6px}
.sx-head h2{margin:0;font-size:20px;font-weight:600}
.sx-head p{margin:4px 0 0;font-size:13.5px;color:var(--text-3)}
.sx-status{font-size:12.5px;color:var(--accent);opacity:0;transition:opacity .3s;padding-top:6px;margin-left:auto;white-space:nowrap}
.sx-status.show{opacity:1}
.sx-body{flex:1;overflow-y:auto;padding:12px 26px 28px;min-height:0}
.sx-group{margin-top:16px}
.sx-group:first-child{margin-top:4px}
.sx-card{border:1px solid var(--line);border-radius:16px;overflow:hidden;background:var(--bg)}
.sx-row{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 16px;border-top:1px solid var(--line);flex-wrap:wrap}
.sx-row:first-child{border-top:0}
.sx-text{min-width:0;flex:1 1 200px}
.sx-label{font-size:14.5px;color:var(--text)}
.sx-hint{font-size:12.5px;color:var(--text-3);margin-top:3px;line-height:1.5}
.sx-row .input{width:auto;flex:1 1 180px;min-width:0;max-width:300px}
.sx-row .set-inline{display:flex;gap:8px;align-items:center;flex:1 1 220px;justify-content:flex-end;max-width:360px}
.sx-row .set-inline .input{flex:1;min-width:0;max-width:none}
.sx-row .pw-area{width:100%;display:flex;flex-direction:column;gap:8px;padding-top:6px}
.sx-row .pw-area .input{width:100%;max-width:none}
.sx-danger .sx-label{color:var(--danger)}
.sx-note{padding:14px 16px;font-size:13px;color:var(--text-2);line-height:1.6;background:var(--surface);border-radius:14px;margin-top:16px}
.sx-quota{font-size:14px;color:var(--text-2);font-variant-numeric:tabular-nums}
@media (max-width:860px){
  .sx{grid-template-columns:1fr;grid-template-rows:auto minmax(0,1fr);height:min(92vh,800px);border-radius:18px}
  .sx-nav{flex-direction:row;overflow-x:auto;border-right:0;border-bottom:1px solid var(--line);padding:10px 12px;gap:6px}
  .sx-nav-title{display:none}
  .sx-tab{flex:none;padding:7px 12px}
  .sx-tab span{white-space:nowrap}
  .sx-head{padding:16px 18px 4px}
  .sx-body{padding:10px 18px 24px}
  .sx-row{flex-direction:column;align-items:flex-start}
  .sx-row .input,.sx-row .set-inline{max-width:none;width:100%}
  .sx-status{display:none}
}