body{margin:0;padding:6vh 7vw;font:18px/1.7 sans-serif;color:#20354b;background:#eff5fa}main{max-width:760px;margin:auto}h1{font-size:clamp(28px,5vw,46px)}button{font:inherit;background:#205b91;color:white;padding:12px 18px;border:0;border-radius:6px;cursor:pointer}.dot{width:24px;height:24px;background:#205b91;border-radius:50%;margin:28px 0;animation:move 2s ease-in-out infinite alternate}@keyframes move{to{transform:translateX(180px)}}@media(prefers-reduced-motion:reduce){.dot{animation:none}}