:root{font-family:Noto Sans SC,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;line-height:1.5;font-weight:400;color:#0f5132;background-color:#f6fff3}body{margin:0;min-height:100vh}.app-shell{display:flex;flex-direction:column;min-height:100vh;background:linear-gradient(135deg,#dff0d8e6,#c6eae0e6);color:#0f5132;padding:2rem}.app-header{text-align:center;margin-bottom:2rem}.app-main{flex:1;display:flex;align-items:center;justify-content:center;font-size:1.125rem}