:root{--bg-app: #f6f5f1;--bg-panel: #ffffff;--bg-rail: #1f1d1a;--bg-chat: #faf8f4;--bg-canvas: #f1efe9;--bg-tab-active: #ffffff;--bg-tab-inactive: transparent;--bg-banner-warn: #fff4e0;--bg-msg-user: #1f1d1a;--bg-msg-agent: #ffffff;--border: #e6e2da;--border-strong: #d4cfc4;--text-primary: #1f1d1a;--text-secondary: #6f6a60;--text-muted: #9c968a;--text-on-dark: #f6f5f1;--text-warn: #8a5a00;--accent: #c96342;--accent-soft: #f4d8cf;--status-draft: #9c968a;--status-approved: #2f7a3e;--status-inwork: #c4892a;--status-done: #4a4a4a;--radius: 8px;--radius-sm: 6px;--font: -apple-system, BlinkMacSystemFont, "Segoe UI", "SF Pro Text", "Inter", Roboto, Helvetica, Arial, sans-serif}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{font-family:var(--font);color:var(--text-primary);background:var(--bg-app);font-size:14px;line-height:1.5;-webkit-font-smoothing:antialiased}button{font-family:inherit;font-size:inherit;cursor:pointer}input,textarea{font-family:inherit;font-size:inherit}.app{display:grid;grid-template-columns:56px 360px 1fr;height:100vh;overflow:hidden}.rail{background:var(--bg-rail);color:var(--text-on-dark);display:flex;flex-direction:column;align-items:center;padding:14px 0;gap:4px}.rail__logo{width:32px;height:32px;border-radius:var(--radius-sm);background:var(--accent);color:var(--text-on-dark);display:flex;align-items:center;justify-content:center;font-weight:600;font-size:14px;margin-bottom:16px}.rail__btn{position:relative;width:40px;height:40px;border-radius:var(--radius-sm);border:none;background:transparent;color:var(--text-on-dark);opacity:.6;display:flex;align-items:center;justify-content:center;font-size:18px;transition:opacity .12s,background .12s}.rail__btn:hover{opacity:1;background:#ffffff0f}.rail__btn--active{opacity:1;background:#ffffff1a}.rail__badge{position:absolute;top:6px;right:6px;width:8px;height:8px;border-radius:50%;background:var(--accent);border:2px solid var(--bg-rail);box-sizing:content-box}.rail__spacer{flex:1}.chat{background:var(--bg-chat);border-right:1px solid var(--border);display:flex;flex-direction:column;min-width:0}.chat__header{padding:14px 18px;border-bottom:1px solid 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12px;font-size:13px}.chat__send:disabled{background:var(--border-strong);color:var(--text-muted);cursor:not-allowed}.chat__hint{font-size:11px;color:var(--text-muted);margin-top:6px;padding:0 4px}.canvas{background:var(--bg-canvas);display:flex;flex-direction:column;min-width:0;overflow:hidden}.tabs{display:flex;align-items:stretch;background:var(--bg-canvas);padding:8px 8px 0;gap:2px;border-bottom:1px solid var(--border);overflow-x:auto}.tab{display:inline-flex;align-items:center;gap:8px;padding:8px 12px 9px;border:1px solid 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