:root{color:#333;background:#eef0f7;font-family:Inter,PingFang SC,Microsoft YaHei,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-synthesis:none;text-rendering:optimizeLegibility}*{box-sizing:border-box}html{min-width:320px;background:#eef0f7}body{min-width:320px;min-height:100vh;margin:0;background:#eef0f7}button,input{font:inherit}button,a{-webkit-tap-highlight-color:transparent}.page-shell{width:min(100%,600px);min-height:100vh;margin:0 auto;padding-right:18px;padding-bottom:calc(30px + env(safe-area-inset-bottom));padding-left:18px}