:root{font-family:system-ui,sans-serif;color:#15272e;background:#edf4f2}body{margin:0;min-height:100vh;display:grid;place-items:center}main{box-sizing:border-box;width:min(640px,92vw);padding:48px 36px;background:white;border:1px solid #d2e2de;border-radius:24px}h1{font-size:clamp(28px,6vw,42px);letter-spacing:-.03em;margin:18px 0}p{line-height:1.7}.label{color:#437363;font-size:12px;letter-spacing:.1em}section{background:#f3f7f5;padding:12px 24px;border-radius:12px;margin:24px 0}button{background:#1d6352;color:white;border:0;border-radius:10px;padding:12px 22px;font-size:16px;cursor:pointer}.note{font-size:13px;color:#60756f}