body{font-family:system-ui,-apple-system,sans-serif;margin:0;background:#fafafa}main{max-width:640px;margin:40px auto;padding:24px;background:#fff;border-radius:8px;box-shadow:0 1px 3px #0000000f}h1{margin-top:0}code{background:#f0f0f0;padding:2px 6px;border-radius:4px;font-size:.85em}form{display:flex;gap:8px;margin:16px 0}input{flex:1;padding:10px;border:1px solid #ddd;border-radius:4px;font-size:1em}button{padding:10px 20px;cursor:pointer;background:#111;color:#fff;border:none;border-radius:4px;font-size:1em}button:hover{background:#333}ul{padding-left:20px;margin:16px 0}li{margin:6px 0}li small{color:#888;margin-left:8px;font-size:.85em}.vazio{color:#888;list-style:none;padding-left:0}.erro{color:#c00;margin-top:16px}