:root{--primary: #646cff;--primary-hover: #535bf2;--bg-color: #ffffff;--text-color: #213547;--card-bg: #f9f9f9}body{margin:0;font-family:Inter,system-ui,Avenir,Helvetica,Arial,sans-serif;background-color:var(--bg-color);color:var(--text-color);-webkit-font-smoothing:antialiased}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:var(--primary);cursor:pointer;transition:border-color .25s;color:#fff}button:hover{background-color:var(--primary-hover)}.container{max-width:800px;margin:0 auto;padding:2rem;text-align:center}.card{background:var(--card-bg);padding:2em;border-radius:12px;box-shadow:0 4px 6px #0000001a;margin-top:1em}input,textarea{width:100%;padding:10px;border-radius:6px;border:1px solid #ccc;font-family:inherit;margin-top:10px}