:root{color-scheme:light dark}*,:after,:before{box-sizing:border-box}body{margin:0;padding:1.5rem;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;max-width:860px;margin-inline:auto;line-height:1.5}main{display:flex;flex-direction:column;gap:1rem}h1{font-size:1.8rem;margin:0}textarea{width:100%;min-height:160px;padding:.75rem;font-family:inherit;font-size:1rem;border-radius:8px;border:1px solid #ccc}button{padding:.6rem 1.2rem;border-radius:999px;border:1px solid #ccc;cursor:pointer;font-size:.95rem}section{border-radius:12px;border:1px solid #3333;padding:1rem}