:root{color-scheme:light;--bg:#f7f9fb;--fg:#17253a;--mute:#526579;--accent:#315ece;--line:#dce4ef}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.7 system-ui,-apple-system,Segoe UI,sans-serif}main{max-width:760px;margin:7vh auto;padding:32px}h1{font-size:clamp(2rem,6vw,3.4rem);line-height:1.15;letter-spacing:-.04em}h2{line-height:1.3;margin-top:2rem}p,li{max-width:68ch}p.lead{font-size:1.15rem;color:var(--mute)}a{color:var(--accent)}nav,footer{display:flex;gap:20px;flex-wrap:wrap;padding-top:20px;border-top:1px solid var(--line)}.tag{font-size:.78rem;letter-spacing:.13em;text-transform:uppercase;color:var(--accent);font-weight:700}footer{font-size:.9rem;color:var(--mute);margin-top:4rem}@media(max-width:640px){main{padding:22px;margin:3vh auto}}