:root { color-scheme: light; font-family: system-ui, -apple-system, sans-serif; color: #18312c; background: #f5f7f4; }
body { margin: 0; line-height: 1.65; }
main { max-width: 760px; margin: 56px auto; padding: 40px; background: #fff; border: 1px solid #dbe4df; border-radius: 16px; }
nav, footer { font-size: .94rem; }
nav { display: flex; flex-wrap: wrap; gap: 20px; border-bottom: 1px solid #dbe4df; padding-bottom: 20px; }
a { color: #086447; text-underline-offset: 3px; }
a:focus-visible { outline: 3px solid #086447; outline-offset: 4px; }
h1 { font-size: clamp(1.9rem, 5vw, 2.7rem); line-height: 1.2; margin-top: 34px; }
h2 { font-size: 1.25rem; margin-top: 30px; }
.intro { font-size: 1.14rem; color: #3f5952; }
.badge { display: inline-block; padding: 3px 12px; border-radius: 20px; background: #e6f2e9; color: #18553a; font-size: .86rem; }
footer { margin-top: 36px; padding-top: 20px; border-top: 1px solid #dbe4df; color: #51645e; }
@media (max-width: 640px) { main { margin: 16px; padding: 24px; } }