* { box-sizing: border-box; }
body { min-height: 100vh; margin: 0; padding: 24px; color: #fff; font-family: Arial, Tahoma, sans-serif;
  background-image: linear-gradient(to bottom, #6315B7, #4E1068, #001D94); background-attachment: fixed; }
main { width: min(760px, 100%); margin: 8vh auto 0; text-align: center; }
h1 { margin: 0 0 14px; font-size: clamp(2rem, 6vw, 3rem); }
p { color: rgba(255,255,255,.86); font-size: 1.1rem; line-height: 1.9; }
a { display: inline-block; margin-top: 18px; padding: 11px 20px; border-radius: 8px; color: white; text-decoration: none;
  background: linear-gradient(to right bottom, #284880, #5b00c6); border: 1px solid white; }