:root{font-family:Inter,system-ui,sans-serif;color:#162033;background:#f4f7fb}*{box-sizing:border-box}body{margin:0}main{max-width:720px;margin:6vh auto;padding:32px;background:#fff;border-radius:20px;box-shadow:0 16px 50px #16203318}h1{margin-top:0}nav{display:flex;gap:12px;flex-wrap:wrap}a,button{display:inline-block;border:0;border-radius:10px;padding:12px 16px;background:#d71939;color:#fff;text-decoration:none;font-weight:700;cursor:pointer}form{display:grid;gap:14px}label{display:grid;gap:6px;font-weight:650}input,textarea{width:100%;padding:12px;border:1px solid #ccd4e0;border-radius:9px;font:inherit}.sample{margin-top:32px;color:#526174}#message{font-weight:700}