.tool-app{background:var(--paper);min-height:100vh;color:var(--ink);font-family:var(--sans);line-height:1.5}.tool-app *{box-sizing:border-box}.tool-app :where(h1,h2,h3){font-family:var(--serif);margin:0;font-weight:600;line-height:1.2}.tool-app button{cursor:pointer;font-family:inherit}.tool-app :where(input,textarea){font-family:inherit}