body{display:grid;place-items:center;background:radial-gradient(ellipse at top,rgba(145,166,104,.18),transparent 55%),var(--sand);min-height:100vh;margin:0}
.box{background:var(--paper);border:1px solid var(--line);box-shadow:var(--shadow);border-radius:18px;padding:38px 32px;width:360px}