:root{
  --ink:#1a1c22; --muted:#5c6270; --rule:#e3e5ea;
  --bg:#fbfbfc; --accent:#2b3a67;
}
@media (prefers-color-scheme: dark){
  :root{ --ink:#e8e9ed; --muted:#9aa1b0; --rule:#2a2d36; --bg:#14161b; --accent:#9db2e8; }
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0; background:var(--bg); color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  font-size:17px; line-height:1.62;
}
.wrap{max-width:38rem;margin:0 auto;padding:4rem 1.5rem 6rem}
header{border-bottom:1px solid var(--rule);padding-bottom:1.5rem;margin-bottom:2.5rem}
.brand{font-size:.8rem;letter-spacing:.13em;text-transform:uppercase;color:var(--muted);text-decoration:none}
h1{font-size:1.7rem;line-height:1.25;margin:.9rem 0 .3rem;font-weight:600;letter-spacing:-.01em}
h2{font-size:1.02rem;font-weight:600;margin:2.2rem 0 .4rem}
.date{color:var(--muted);font-size:.9rem;margin:0}
p{margin:0 0 1rem}
a{color:var(--accent)}
ul{padding-left:1.15rem}
li{margin-bottom:.45rem}
footer{margin-top:4rem;padding-top:1.5rem;border-top:1px solid var(--rule);color:var(--muted);font-size:.87rem}