:root{--bg:#fbfaf7;--ink:#14213d;--muted:#5b6478;--line:#e3e1da;--accent:#1f6f5c;--card:#ffffff}
@media (prefers-color-scheme:dark){:root{--bg:#0f1524;--ink:#eef0f5;--muted:#a3abbd;--line:#273049;--accent:#5cc2a3;--card:#151d31}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Inter,Roboto,sans-serif}
main{max-width:760px;margin:0 auto;padding:40px 16px 80px}
header{display:flex;justify-content:space-between;align-items:baseline;flex-wrap:wrap;gap:8px;border-bottom:1px solid var(--line);padding-bottom:16px;margin-bottom:32px}
.brand{font-family:Georgia,"Times New Roman",serif;font-size:20px;font-weight:600;color:var(--ink);text-decoration:none}
nav a{color:var(--muted);text-decoration:none;margin-left:16px;font-size:14px}
nav a:hover{color:var(--accent)}
h1{font-family:Georgia,"Times New Roman",serif;font-size:34px;line-height:1.2;margin:0 0 12px}
h2{font-size:20px;margin:36px 0 8px}
h3{font-size:16px;margin:20px 0 4px}
p,li{color:var(--ink)}
.lede{color:var(--muted);font-size:18px}
code,.url{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:14px;background:var(--card);border:1px solid var(--line);border-radius:6px;padding:2px 6px;word-break:break-all}
.card{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:16px 18px;margin:12px 0}
.small{font-size:14px;color:var(--muted)}
a{color:var(--accent)}
footer{margin-top:48px;border-top:1px solid var(--line);padding-top:16px;font-size:14px;color:var(--muted)}