:root{color-scheme:dark;font:16px/1.6 system-ui;background:#0d1713;color:#e9f1ec}body{margin:0}main{max-width:780px;margin:60px auto;padding:24px}a{color:#b6e8bf}nav{display:flex;gap:24px;flex-wrap:wrap}h1{font-size:36px;line-height:1.2}section{border:1px solid #35443b;border-radius:12px;padding:24px;margin:24px 0;background:#15211b}button,.button{display:inline-block;padding:10px 18px;border:1px solid #8bc59a;border-radius:7px;background:#243c2e;color:#f4fff7;font:inherit;cursor:pointer}button:disabled{opacity:.5}p{max-width:65ch}.muted{color:#abc0b2}#message{min-height:28px}li{margin:8px 0}