:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color:#213547;background-color:#f7fafc;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}*,*:before,*:after{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh;background:#f7fafc}h1{line-height:1.1}button{font-family:inherit;cursor:pointer}.app-shell{max-width:1400px;margin:0 auto;padding:40px 24px;font-family:system-ui,sans-serif;background:#f7fafc;min-height:100vh}.app-header{margin-bottom:32px;width:100vw;position:relative;left:50%;margin-left:-50vw;margin-top:-40px}.app-body{display:flex;flex-direction:column;gap:0}.app-form{flex:1;min-width:0}.app-preview-col{display:none}@media(min-width:960px){.app-body{flex-direction:row;align-items:flex-start;gap:28px}.app-form{flex:1;min-width:0}.app-preview-col{display:block;width:380px;flex-shrink:0;position:sticky;top:24px}.preview-inline{display:none}}.download-btn{display:block;width:100%;text-decoration:none}