@font-face{font-family:"IBM Plex Mono";font-style:normal;font-weight:400;font-display:swap;
  src:url("fonts/ibm-plex-mono-400.woff2") format("woff2")}
@font-face{font-family:"IBM Plex Mono";font-style:normal;font-weight:500;font-display:swap;
  src:url("fonts/ibm-plex-mono-500.woff2") format("woff2")}
@font-face{font-family:"IBM Plex Sans";font-style:normal;font-weight:400 700;font-display:swap;
  src:url("fonts/ibm-plex-sans-var.woff2") format("woff2")}

:root{
  --ground:#FBFAF7; --surface:#F3F1EA; --ink:#1A1C1A; --ink-soft:#43473F;
  --muted:#666A5D; --line:#DCD8CC; --accent:#1E6E4B;
}
@media (prefers-color-scheme:dark){
  :root{
    --ground:#121412; --surface:#1B1E1B; --ink:#E9EAE4; --ink-soft:#BDC0B6;
    --muted:#888C81; --line:#2E332C; --accent:#55B487;
  }
}
*{box-sizing:border-box}
body{margin:0;background:var(--ground);color:var(--ink);
  font-family:"IBM Plex Sans",system-ui,-apple-system,sans-serif;line-height:1.65;
  -webkit-font-smoothing:antialiased}
.wrap{max-width:680px;margin:0 auto;padding:64px 24px 80px}
a{color:var(--accent)}
a:focus-visible{outline:2.5px solid var(--accent);outline-offset:3px;border-radius:4px}
h1{font-size:clamp(26px,4.4vw,34px);font-weight:700;letter-spacing:-.01em;margin:0 0 8px}
h2{font-size:18px;font-weight:700;margin:32px 0 10px}
p,li{font-size:15px;color:var(--ink-soft)}
ul,ol{padding-left:22px}
li{margin-bottom:6px}
.updated{font-family:"IBM Plex Mono",monospace;font-size:12px;color:var(--muted);
  text-transform:uppercase;letter-spacing:.08em;margin-bottom:36px}
.notice{background:var(--surface);border:1px solid var(--line);border-radius:10px;
  padding:16px 18px;font-size:13.5px;color:var(--muted);margin:0 0 32px}
.back{display:inline-block;margin-bottom:28px;font-family:"IBM Plex Mono",monospace;
  font-size:13px;text-decoration:none}
.back:hover{text-decoration:underline}
footer{border-top:1px solid var(--line);margin-top:48px;padding-top:20px;font-size:13px;color:var(--muted)}
.foot-brand{display:flex;align-items:center;gap:9px}
.foot-brand img{flex:none}
.foot-brand .wordmark{font-family:"IBM Plex Sans",system-ui,sans-serif;font-weight:700;
  letter-spacing:-.01em;color:var(--ink);text-decoration:none}
footer nav{display:flex;gap:16px;flex-wrap:wrap;margin-top:10px}
footer nav a{color:var(--muted);text-decoration:none}
footer nav a:hover{color:var(--accent);text-decoration:underline}