*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,system-ui,sans-serif;background:#f5f3ef;color:#222;line-height:1.5}
main{max-width:480px;margin:0 auto;padding:16px}
h1{font-size:1.4rem}h2{font-size:1.1rem;margin-top:28px}
section{background:#fff;border-radius:12px;padding:12px 16px;margin-top:12px}
label{display:block;margin-top:8px}
input,textarea,button{font:inherit;width:100%;padding:10px;border:1px solid #ccc;border-radius:8px}
textarea{min-height:96px}
button{margin-top:10px;background:#2d5b8a;color:#fff;border:0}
button.danger{background:#a33}
article{border-top:1px solid #eee;padding:10px 0}
.body{white-space:pre-wrap}
.when,.hint,.empty{color:#666;font-size:.9rem}
.error{background:#fde8e8;color:#8a1c1c;padding:10px;border-radius:8px}
.code{font-size:2rem;letter-spacing:.2em}