:root{color-scheme:light;--bg: #ffffff;--surface: #f6f8fb;--surface-strong: #eef3f8;--text: #172033;--muted: #667085;--subtle: #8a95a7;--border: #d9e1ec;--border-strong: #c3cfdd;--accent: #1d5fd1;--accent-strong: #164da8;--accent-soft: #e8f1ff;--success: #12715b;--success-soft: #e7f6f1;--error: #b42318;--error-soft: #fff0ee;--shadow: 0 24px 60px rgba(19, 33, 68, .12);font-family:Inter,Segoe UI,Microsoft YaHei,PingFang SC,Noto Sans CJK SC,system-ui,sans-serif;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}*{box-sizing:border-box}html,body,#root{width:100%;min-width:320px;height:100%;margin:0;overflow:hidden}body{background:var(--bg);color:var(--text)}button,input,textarea,select{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed}.app-shell{display:grid;grid-template-columns:260px 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var(--border);border-radius:8px;outline:0}.logout-dialog-button:hover,.logout-dialog-button:focus-visible{border-color:#c7d3e3;box-shadow:0 0 0 3px #1d5fd11a}.logout-dialog-button.danger{color:#fff;background:#b42318;border-color:#b42318}.logout-dialog-button.danger:hover,.logout-dialog-button.danger:focus-visible{background:#971b12;border-color:#971b12}.chat-layout{--chat-content-width: 760px;--chat-bubble-width: 680px;display:grid;grid-template-rows:minmax(0,1fr) auto;position:relative;height:100%;overflow:hidden}@media(min-width:1440px){.chat-layout{--chat-content-width: clamp(1086px, calc(100vw - 358px) , 1566px);--chat-bubble-width: 100%}}.chat-scroll{grid-row:1;grid-column:1;min-height:0;overflow-y:auto;scrollbar-gutter:stable both-edges;padding:32px 24px 88px}.empty-state{display:grid;justify-items:center;align-content:center;min-height:100%;max-width:1120px;margin:0 auto;padding:0 24px 10vh;text-align:center}.empty-state 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textarea::placeholder{color:var(--subtle)}.composer textarea:disabled{cursor:not-allowed;background:transparent}.composer:focus-within{border-color:#c7d3e3;box-shadow:none}.composer-tool-button{display:grid;place-items:center;width:44px;height:44px;color:#111827;background:#f7f7f7;border:0;border-radius:50%}.composer-tool-button:hover{background:#eee}.send-button{width:46px;height:46px;color:#fff;background:#0b0f19;border:1px solid #0b0f19;border-radius:50%}.send-button:hover:not(:disabled){background:#000;border-color:#000}.send-button:disabled{color:#95a0b1;background:var(--surface-strong);border-color:var(--border)}.send-button.stop-button{color:#fff;background:#b91c1c;border-color:#b91c1c}.send-button.stop-button:hover:not(:disabled){background:#991b1b;border-color:#991b1b}.review-link-button{display:inline-flex;align-items:center;gap:6px;margin-top:10px;padding:7px 14px;color:#0b0f19;font-size:13px;font-weight:650;background:#fff;border:1px solid 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