* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; display: grid; place-items: center; background: #f7f8fa; color: #20242c; font-family: Arial, sans-serif; }
main { width: min(100%, 720px); padding: 32px 24px; text-align: center; }
h1 { margin: 0 0 16px; font-size: clamp(26px, 5vw, 40px); line-height: 1.2; }
p { margin: 0; font-size: 18px; line-height: 1.5; color: #606774; }