:root{--bg:#f7f8f6;--ink:#10171a;--muted:#5c6862;--line:#dfe4de;--accent:#1f6b45}@media (prefers-color-scheme:dark){:root{--bg:#0d1113;--ink:#eef2ee;--muted:#9aa79f;--line:#222a2c;--accent:#7fdcaa}}*{box-sizing:border-box;margin:0;padding:0}html{-webkit-text-size-adjust:100%}body{background:var(--bg);color:var(--ink);-webkit-font-smoothing:antialiased;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Helvetica,Arial,sans-serif;line-height:1.6}main{max-width:40rem;margin:0 auto;padding:clamp(3rem,12vh,8rem) 1.5rem 4rem}header{margin-bottom:clamp(3rem,10vh,6rem)}.mark{letter-spacing:.18em;color:var(--accent);font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.8125rem}h1{letter-spacing:-.02em;margin-bottom:1.25rem;font-size:clamp(2rem,6vw,3rem);font-weight:650;line-height:1.1}.lead{color:var(--muted);max-width:34rem;font-size:1.0625rem}section{margin-top:2.75rem}h2{letter-spacing:.14em;text-transform:uppercase;color:var(--accent);margin-bottom:.5rem;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.75rem;font-weight:500}section p{color:var(--muted)}footer{border-top:1px solid var(--line);color:var(--muted);flex-wrap:wrap;justify-content:space-between;gap:.75rem 1.5rem;margin-top:clamp(3rem,10vh,6rem);padding-top:1.5rem;font-size:.9375rem;display:flex}a{color:var(--ink);text-underline-offset:3px;text-decoration:underline}a:hover{color:var(--accent)}