:root--bg:#f7f7f9;--card:#ffffff;--accent:#2b8a6f;--muted:#666 bodyfont-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial;line-height:1.6;margin:0;padding:24px;background:var(--bg);color:#111 .containermax-width:880px;margin:0 auto .cardbackground:var(--card);border-radius:10px;padding:28px;box-shadow:0 6px 18px rg