:root{--bg:#212121;--text:#ececec;--text-muted:#b4b4b4;--text-dim:#8e8e8e;--border:#3c3c3c;--hover:#2f2f2f;--user-bubble:#303030;--input-bg:#303030}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased;-webkit-tap-highlight-color:transparent;overscroll-behavior-y:none;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Noto Sans CJK SC,sans-serif;font-size:16px;line-height:1.75}button{font:inherit;color:inherit;cursor:pointer;background:0 0;border:none}input,textarea{font:inherit;color:inherit;font-size:16px}.boot{background:var(--bg);height:100dvh}.login-page{justify-content:center;align-items:center;min-height:100dvh;padding:24px;display:flex}.login-panel{flex-direction:column;gap:10px;width:100%;max-width:320px;display:flex}.login-panel input{border:1px solid var(--border);background:var(--input-bg);text-align:center;border-radius:24px;outline:none;padding:13px 18px}.login-panel input:focus{border-color:#5a5a5a}.login-panel button{color:#0d0d0d;background:#fff;border-radius:24px;padding:13px;font-weight:500;transition:opacity .15s}.login-panel button:hover{opacity:.88}.login-panel button:disabled{opacity:.4;cursor:default}.login-err{color:#f87171;text-align:center;min-height:18px;font-size:13px}.app{flex-direction:column;height:100dvh;display:flex}.topbar{height:44px;padding:env(safe-area-inset-top,0px) 10px 0 10px;flex:none;justify-content:flex-end;align-items:center;display:flex}.logout{color:var(--text-dim);border-radius:8px;padding:6px 12px;font-size:13px;transition:all .15s}.logout:hover{background:var(--hover);color:var(--text)}.thread{flex-direction:column;flex:1;min-height:0;display:flex}.thread-viewport{-webkit-overflow-scrolling:touch;flex:1;min-height:0;overflow-y:auto}.thread-inner{max-width:768px;margin:0 auto;padding:10px 20px 16px}.empty{text-align:center;justify-content:center;align-items:center;min-height:56vh;display:flex}.empty h1{color:var(--text);margin:0;font-size:28px;font-weight:500}.msg-user{justify-content:flex-end;margin-bottom:20px;display:flex}.user-bubble{background:var(--user-bubble);white-space:pre-wrap;word-break:break-word;border-radius:20px 20px 4px;max-width:78%;padding:10px 17px}.msg-assistant{word-break:break-word;margin-bottom:26px}.md{line-height:1.78}.md>:first-child{margin-top:0}.md>:last-child{margin-bottom:0}.md p{margin:.6em 0}.md h1,.md h2,.md h3,.md h4{margin:1.1em 0 .5em;font-weight:600;line-height:1.4}.md h1{font-size:1.22em}.md h2{font-size:1.12em}.md h3{font-size:1.03em}.md ul,.md ol{margin:.5em 0;padding-left:1.5em}.md li{margin:.28em 0}.md strong{color:#fff;font-weight:600}.md a{color:#7aa2f7;text-decoration:none}.md a:hover{text-decoration:underline}.md blockquote{color:var(--text-muted);border-left:3px solid #555;margin:.7em 0;padding:4px 14px}.md code{background:#ffffff17;border-radius:5px;padding:2px 6px;font-family:SF Mono,Consolas,Menlo,monospace;font-size:.9em}.md pre{border:1px solid var(--border);background:#0d0d0d;border-radius:10px;margin:.7em 0;padding:14px 16px;overflow-x:auto}.md pre code{background:0 0;padding:0;font-size:.86em;line-height:1.6}.md hr{border:none;border-top:1px solid var(--border);margin:1.3em 0}.md table{border-collapse:collapse;width:100%;margin:.7em 0;font-size:.94em}.md th,.md td{border:1px solid var(--border);text-align:left;padding:7px 10px}.md th{background:var(--hover);font-weight:600}.thread-footer{padding:8px 20px calc(16px + env(safe-area-inset-bottom,0px));flex:none}.thread-footer-inner{max-width:768px;margin:0 auto}.composer{background:var(--input-bg);border-radius:26px;align-items:flex-end;gap:8px;padding:7px 8px 7px 18px;display:flex;position:relative}.composer-input{resize:none;background:0 0;border:none;outline:none;flex:1;min-width:0;max-height:180px;padding:8px 0;line-height:1.5}.composer-input::placeholder{color:var(--text-dim)}.composer-btn{border-radius:50%;flex:none;justify-content:center;align-items:center;width:34px;height:34px;transition:all .15s;display:flex}.composer-send{color:#0d0d0d;background:#fff}.composer-send:disabled{color:#8e8e8e;cursor:default;background:#4a4a4a}.composer-stop{color:#0d0d0d;background:#fff}@media (width<=767px){.thread-inner{padding:6px 16px 12px}.empty h1{font-size:23px}.msg-user{margin-bottom:16px}.user-bubble{max-width:84%}.msg-assistant{margin-bottom:20px}.thread-footer{padding:6px 14px calc(12px + env(safe-area-inset-bottom,0px))}.composer{padding:6px 6px 6px 16px}}