:root { color-scheme: light; font-family: system-ui, -apple-system, "Segoe UI", sans-serif; color: #173a2d; background: #eef3ea; }
body { margin: 0; }
main { max-width: 760px; margin: 0 auto; padding: 48px 22px 80px; }
h1 { font-size: clamp(2rem, 6vw, 3.8rem); line-height: 1; margin: 0 0 18px; }
h2 { margin-top: 34px; }
p, li { line-height: 1.65; color: #29493e; }
a { color: #145d45; }
.card { background: #fff; border-radius: 22px; padding: 22px; box-shadow: 0 8px 30px rgba(35,87,68,.08); }
.muted { color: #5d736b; }
nav { display: flex; flex-wrap: wrap; gap: 16px; margin: 0 0 36px; }