:root{--bg:#fbfaf8;--fg:#1f1d1b;--muted:#6b6560;--card:#fff;--line:#e4dfd8;--accent:#5b4bdb;--warn-bg:#fff4d6;--warn-fg:#6a4b00}
@media (prefers-color-scheme:dark){:root{--bg:#141312;--fg:#ece8e3;--muted:#a39d96;--card:#1d1b19;--line:#33302c;--accent:#a99cff;--warn-bg:#3a2e0a;--warn-fg:#f2d78a}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.8 -apple-system,BlinkMacSystemFont,"Hiragino Sans","Hiragino Kaku Gothic ProN","Yu Gothic",Meiryo,sans-serif}
header.site,main,footer.site{max-width:760px;margin:0 auto;padding-left:16px;padding-right:16px}
header.site{display:flex;justify-content:space-between;align-items:center;padding-top:16px;padding-bottom:12px;border-bottom:1px solid var(--line);flex-wrap:wrap;gap:8px}
header.site a.brand{font-weight:700;font-size:1.25rem;color:var(--fg);text-decoration:none;letter-spacing:.08em}
nav a{margin-left:14px;color:var(--accent);text-decoration:none;font-size:.95rem}
a{color:var(--accent)}
main{padding-top:24px;padding-bottom:40px}
h1{font-size:1.6rem;line-height:1.4}
h2{font-size:1.2rem;margin-top:2em;border-bottom:1px solid var(--line);padding-bottom:.3em}
h3{font-size:1.05rem}
blockquote{margin:1em 0;padding:.8em 1em;background:var(--warn-bg);color:var(--warn-fg);border-radius:8px}
blockquote p{margin:0}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px 18px;margin:16px 0}
table{border-collapse:collapse;width:100%;font-size:.9rem;display:block;overflow-x:auto}
th,td{border:1px solid var(--line);padding:6px 10px;text-align:left;vertical-align:top}
th{background:var(--card)}
code{background:var(--card);padding:1px 5px;border-radius:4px}
footer.site{padding-top:16px;padding-bottom:32px;border-top:1px solid var(--line);color:var(--muted);font-size:.85rem}
.ph{background:var(--warn-bg);color:var(--warn-fg);padding:0 4px;border-radius:4px}