:root{color-scheme:light;--bg:#eef3f0;--panel:#ffffff;--panel-soft:#e4f0ec;--ink:#10151f;--muted:#5b6472;--line:#d4e1dc;--green:#b8f952;--green-dark:#315600;--blue:#126c8f;--amber:#f1a43c;--space:#080d16;--shadow:0 18px 48px rgba(3,8,14,0.12);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth}body,html{overflow-x:hidden}body{margin:0;min-width:320px;min-height:100vh;background:var(--bg);color:var(--ink)}button,input,select,textarea{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.55}a{color:inherit;text-decoration:none}.chat-app-shell{display:block;min-height:100vh;max-width:100%;overflow-x:hidden;padding-left:320px}.sidebar{position:fixed;inset:0 auto 0 0;z-index:40;width:320px;height:100vh;display:flex;flex-direction:column;gap:16px;overflow-y:auto;overscroll-behavior:contain;padding:24px 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