* { box-sizing: border-box; }
body { margin: 0; background: #f5f9fa; color: #243746; font: 16px/1.9 system-ui, sans-serif; }
main { max-width: 800px; margin: auto; padding: 40px 24px 64px; }
header { border-bottom: 1px solid #dce7ea; padding-bottom: 20px; }
h1 { font-size: 28px; margin-bottom: 4px; }
h2 { font-size: 19px; margin-top: 28px; }
a { color: #116f68; text-underline-offset: 3px; }
.meta { color: #506471; font-size: 14px; }