:root{--ink:#16181d;--muted:#5d6370;--line:#e4e4e0;--bg:#f7f7f5;--brand:#4f46e5}
*{box-sizing:border-box;margin:0;padding:0}
body{font:16px/1.65 system-ui,-apple-system,"Segoe UI",sans-serif;background:var(--bg);color:var(--ink)}
.wrap{max-width:760px;margin:0 auto;padding:48px 20px 64px}
header{display:flex;align-items:center;gap:10px;margin-bottom:36px}
header b{font-size:20px}
header nav{margin-left:auto;display:flex;gap:16px;font-size:14px}
a{color:var(--brand)}
h1{font-size:30px;line-height:1.25;margin-bottom:14px}
h2{font-size:19px;margin:30px 0 8px}
p,li{color:#2d3139;margin-bottom:10px}
ul{padding-left:22px}
.muted{color:var(--muted);font-size:14px}
footer{margin-top:48px;padding-top:16px;border-top:1px solid var(--line);font-size:14px;color:var(--muted)}