body{margin:0;background:#101d2c;color:#f5f7fb;font:18px/1.6 system-ui}main{max-width:800px;margin:7vh auto;padding:24px}h1{font-size:clamp(44px,8vw,80px);line-height:1.1}label{display:block;margin:16px 0}input,select,button{font:inherit;padding:12px;border-radius:6px;border:1px solid #a7bcd4}input,select{display:block;width:100%;box-sizing:border-box}button{background:#a6f0cd;color:#101d2c;cursor:pointer}article,form{border-top:1px solid #47627d;padding:24px 0}button:disabled{opacity:.5;cursor:wait}#message{color:#a6f0cd}