:root{--bg:#fff;--fg:#1a1a1a;--mut:#666;--acc:#03a9f4;--line:#e5e5e5}
@media(prefers-color-scheme:dark){:root{--bg:#121212;--fg:#e8e8e8;--mut:#9a9a9a;--line:#2a2a2a}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif}
main{max-width:46rem;margin:0 auto;padding:3rem 1.25rem 4rem}
h1{font-size:1.9rem;margin:0 0 .35rem;letter-spacing:-.02em}
h2{font-size:1.15rem;margin:2.2rem 0 .6rem;letter-spacing:-.01em}
.sub{color:var(--mut);margin:0 0 2rem}
a{color:var(--acc)}
ul{padding-left:1.2rem}
footer{margin-top:3rem;padding-top:1.25rem;border-top:1px solid var(--line);color:var(--mut);font-size:.9rem}