body { font: 16px Arial, sans-serif; background: #f4f6f8; color: #222; }
main { max-width: 680px; margin: 48px auto; padding: 28px; background: white;
       border-radius: 10px; box-shadow: 0 2px 12px #0001; }
label { display: block; margin-top: 16px; }
input, textarea { box-sizing: border-box; width: 100%; padding: 10px; margin-top: 6px; }
textarea { min-height: 120px; }
button { margin-top: 16px; padding: 10px 16px; cursor: pointer; }
li { margin: 14px 0; }
small { color: #666; }