html, body { margin: 0; background: #f4f6f7; color: #17202a; font: 16px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; }
main { max-width: 760px; margin: 0 auto; padding: 24px 18px 60px; }
nav { display: flex; gap: 14px; flex-wrap: wrap; font-size: 14px; margin-bottom: 18px; }
a { color: #1f9d55; }
h1 { font-size: 26px; line-height: 1.25; }
h2 { font-size: 18px; margin-top: 28px; }
.muted { color: #5f6b76; font-size: 14px; }
section[lang] { display: none; }
section[lang].on { display: block; }