*{box-sizing:border-box}
html,body{margin:0;min-height:100%;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif}
body{min-height:100vh;display:grid;place-items:center;background:#101114;color:#f5f5f5;padding:24px}
.card{width:min(620px,100%);background:#191b20;border:1px solid #2e3138;border-radius:24px;padding:48px 28px;text-align:center;box-shadow:0 18px 50px rgba(0,0,0,.28)}
.mark{width:72px;height:72px;border-radius:20px;background:#f4f4f4;color:#111;display:grid;place-items:center;margin:0 auto 24px;font-weight:800;font-size:26px}
h1{font-size:clamp(28px,6vw,44px);line-height:1.08;margin:0 0 16px}
p{font-size:18px;line-height:1.55;color:#d3d5db;margin:8px 0}
.small{font-size:14px;color:#8e939e;text-transform:uppercase;letter-spacing:.12em;margin-top:22px}