:root{--background:40 33% 97%;--foreground:158 46% 16%;--muted:155 8% 40%;--primary:155 64% 24%;--border:40 12% 84%}*{box-sizing:border-box}body{margin:0;background:hsl(var(--background));color:hsl(var(--foreground));font-family:system-ui,sans-serif;line-height:1.8;letter-spacing:0}header{padding:1.5rem max(1.25rem,calc((100% - 1000px)/2));display:flex;justify-content:space-between;border-bottom:1px solid hsl(var(--border));gap:1rem}main{max-width:850px;margin:3rem auto;padding:0 1.25rem 4rem}h1{font-size:2.5rem;line-height:1.2}h2{margin-top:2.5rem}p,li{color:hsl(var(--muted))}a{color:hsl(var(--primary));text-underline-offset:4px}.lead{font-size:1.2rem}.note{border-top:1px solid hsl(var(--border));padding-top:1.5rem;font-size:.85rem}nav{margin-top:2rem;display:flex;gap:1rem}@media(max-width:600px){h1{font-size:2rem}}