:root{--side:#3a3f51;--dark:#2f3342;--purple:#7266ba;--cyan:#23b7e5;--text:#58666e;--title:#363f44;--line:#dee5e7;--bg:#edf1f2}*{box-sizing:border-box}[hidden]{display:none!important}body{margin:0;font:14px/1.65 -apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC',sans-serif;color:var(--text);background:var(--bg)}button,input,textarea,select{font:inherit;border-radius:2px}button{cursor:pointer;border:1px solid var(--line);background:#fff;color:var(--text);padding:7px 12px}button:disabled{opacity:.45;cursor:not-allowed}button:focus-visible,a:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}input,textarea,select{color:var(--text);border:1px solid #cfdadd;background:#fff;padding:8px 10px}input:focus,textarea:focus,select:focus{outline:none;border-color:var(--cyan)}.primary{background:var(--purple);border-color:#6254b2;color:#fff}.primary:hover{background:#6254b2}h1,h2,h3{color:var(--title);font-weight:500}a{color:var(--cyan)}.auth-layout{min-height:100dvh;display:grid;place-items:center;padding:24px}.auth-card{width:100%;max-width:340px;background:#fff;border:1px solid var(--line);padding:26px}.auth-card h1{font-size:22px;margin:0 0 24px}.auth-card label{display:block;margin-bottom:6px}.auth-card input{width:100%}.auth-card button{width:100%;margin-top:18px}#login-error{color:#c63838;font-size:12px;margin-bottom:0}#sidebar{position:fixed;inset:0 auto 0 0;width:230px;background:var(--side);color:#c4c9d6;display:flex;flex-direction:column;z-index:30}.brand{height:60px;display:flex;align-items:center;padding:0 22px;background:var(--dark);color:#fff;text-decoration:none;font-size:20px;font-weight:500}#new-chat{margin:16px;background:transparent;color:#e7e9f0;border-color:#626779;text-align:left;padding:9px 14px}#new-chat:hover{background:#454b60}#chats{flex:1;overflow-y:auto;padding:0 8px}.chat-link{display:block;width:100%;border:0;border-left:2px solid transparent;background:transparent;color:#c4c9d6;text-align:left;overflow:hidden;white-space:nowrap;text-overflow:ellipsis;padding:11px 13px;margin:2px 0}.chat-link:hover{background:#353a4a;color:#fff}.chat-link.active{background:var(--dark);border-left-color:var(--cyan);color:#fff}.empty-list{display:none}#logout{background:transparent;border:0;border-top:1px solid #505669;color:#a7aec1;text-align:left;padding:16px 22px}main{margin-left:230px;height:100dvh;display:flex;flex-direction:column;min-width:0}header{height:60px;min-height:60px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:16px;padding:0 24px}#chat-title{color:var(--title);overflow:hidden;white-space:nowrap;text-overflow:ellipsis;max-width:50%}.header-actions{display:flex;gap:5px;margin-left:auto}.header-actions button{border:0;font-size:12px;color:#98a6ad;padding:5px 8px}.header-actions button:hover{background:var(--bg);color:var(--text)}.model-bar{display:flex;align-items:center;gap:12px;padding:9px 24px;border-bottom:1px solid #e2e8e9;background:#f6f8f8;font-size:12px}.model-bar label{color:#98a6ad}.model-bar select{padding:4px 8px;font-size:12px;max-width:220px}#model{border:0;background:transparent}#messages{flex:1;min-height:0;overflow-y:auto;background:#fff}.message{border-bottom:1px solid #e9edef;padding:24px;background:#fff}.message.assistant{background:#f7f9fa}.message-main{max-width:800px;margin:auto;min-width:0}.message-label{font-size:11px;color:#98a6ad;margin:0 0 10px}.message-body{line-height:1.85;overflow-wrap:anywhere;color:#46545c}.message-body.user-text{white-space:pre-wrap}.message-body p:first-child{margin-top:0}.message-body p:last-child{margin-bottom:0}pre{background:#2f3342;color:#e0e5ed;overflow:auto;padding:14px;font:12px/1.8 Menlo,Consolas,monospace;border-radius:2px}code{font-family:Menlo,Consolas,monospace;font-size:.88em}:not(pre)>code{background:#e8edf0;padding:2px 4px}.message-body table{display:block;overflow:auto;border-collapse:collapse}.message-body td,.message-body th{border:1px solid var(--line);padding:6px 12px}blockquote{margin-left:0;padding-left:15px;border-left:3px solid #c8c1e2;color:#7c8790}.message-status{font-size:11px;color:#98a6ad;margin-top:10px}.message-status:empty{display:none}.message-status.error{color:#c64e50}.code-controls{display:flex;gap:8px;justify-content:flex-end;margin-bottom:8px}.code-controls button{padding:2px 7px;background:#414758;color:#cbd2dc;border-color:#5b6274;font-size:11px}.composer-wrap{background:#fff;padding:14px 24px max(14px,env(safe-area-inset-bottom));border-top:1px solid var(--line)}#composer{max-width:800px;margin:auto;padding:10px;border:1px solid #cfdadd;background:#fff;border-radius:2px}#composer:focus-within{border-color:#a99fd0}#prompt{display:block;width:100%;resize:none;border:0;padding:4px 6px;line-height:24px;min-height:40px;max-height:160px;background:transparent}.composer-actions{display:flex;align-items:center;gap:8px;margin-top:6px}#add-image{border:0;font-size:12px;padding:4px 6px}#send,#stop{margin-left:auto;min-width:60px;padding:5px 12px}#notice{max-width:800px;margin:0 auto 10px;padding:7px 10px;background:#fff7e8;color:#9b743d;font-size:12px;border-left:2px solid #e8bd69}#menu{display:none}#backdrop{position:fixed;inset:0;background:#0005;border:0;z-index:25}.thinking{margin:0 0 15px;color:#79858d;font-size:13px;border-left:2px solid #dcd6ec;padding-left:12px}.thinking summary{cursor:pointer;list-style:none;color:#8a7eb1}.thinking summary::-webkit-details-marker{display:none}.thinking summary::after{content:'展开';font-size:11px;margin-left:12px;color:#98a6ad}.thinking[open] summary::after{content:'收起'}.reasoning-body{margin-top:10px;max-height:420px;overflow:auto;overflow-wrap:anywhere}.message-images{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:10px}.message-images:empty{display:none}.message-images img{max-width:min(100%,280px);max-height:240px;object-fit:contain;background:#edf1f2;border:1px solid var(--line)}#attachments{max-width:800px;margin:0 auto;display:flex;gap:10px;flex-wrap:wrap}.attachment{display:flex;align-items:flex-end;gap:5px;margin-bottom:10px}.attachment img{width:70px;height:70px;object-fit:cover;border:1px solid var(--line)}.attachment button{font-size:11px;padding:3px 6px}#html-dialog{width:min(1100px,95vw);height:85dvh;border:1px solid var(--line);padding:0;background:#fff;color:var(--text)}#html-dialog::backdrop{background:#0006}.preview-toolbar{height:48px;display:flex;align-items:center;justify-content:space-between;padding:8px 14px;border-bottom:1px solid var(--line)}#preview-container{height:calc(100% - 48px)}#preview-container iframe{border:0;width:100%;height:100%;background:#fff}.katex-display{max-width:100%;overflow-x:auto;overflow-y:hidden;padding:4px 0}@media(max-width:800px){#sidebar{transform:translateX(-100%);transition:transform .18s}body.drawer #sidebar{transform:translateX(0)}main{margin-left:0}#menu{display:block;border:0;padding:3px;font-size:12px}header{height:52px;min-height:52px;padding:0 14px;gap:12px}.header-actions button{padding:5px}.model-bar{padding:8px 14px;gap:10px}.model-bar select{max-width:180px}.message{padding:20px 16px}.composer-wrap{padding:10px 12px max(10px,env(safe-area-inset-bottom))}#prompt{font-size:16px}#chat-title{max-width:40%}}@media(prefers-reduced-motion:reduce){*{transition:none!important}}

.thinking summary{overflow-wrap:anywhere}.thinking summary::after{white-space:nowrap}

.message-usage{font-size:11px;color:#98a6ad;margin-top:12px;overflow-wrap:anywhere}.message-usage:empty{display:none}#context-remaining{max-width:800px;margin:6px auto 0;color:#98a6ad;font-size:11px;text-align:right}