:root{
  --bg:#fbfaf8; --fg:#1c1a17; --muted:#5d574e; --line:#e2ddd4;
  --accent:#7a5c2e; --accent-soft:#f3ede2; --card:#ffffff;
  --maxw:44rem;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --bg:#16150f; --fg:#eae5db; --muted:#a49b8c; --line:#332f26;
    --accent:#d8b26a; --accent-soft:#221f18; --card:#1d1b14;
  }
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);
  font-family:-apple-system,BlinkMacSystemFont,"Hiragino Sans","Noto Sans JP","Yu Gothic",sans-serif;
  line-height:1.85;font-size:16.5px;-webkit-text-size-adjust:100%}
a{color:var(--accent)}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 1.25rem}
header.site{border-bottom:1px solid var(--line);padding:1.1rem 0;margin-bottom:2.5rem}
header.site .wrap{display:flex;justify-content:space-between;align-items:baseline;gap:1rem;flex-wrap:wrap}
header.site a.brand{font-weight:700;text-decoration:none;color:var(--fg);font-size:1.02rem;letter-spacing:.02em}
header.site nav a{margin-left:1.1rem;font-size:.9rem;text-decoration:none;color:var(--muted)}
header.site nav a:hover{color:var(--accent)}
h1{font-size:1.72rem;line-height:1.45;margin:0 0 .6rem;letter-spacing:.01em}
h2{font-size:1.22rem;margin:2.6rem 0 .8rem;padding-top:.4rem;border-top:1px solid var(--line)}
h3{font-size:1.04rem;margin:1.8rem 0 .5rem}
p{margin:0 0 1.15rem}
.lede{color:var(--muted);font-size:1.02rem;margin-bottom:2rem}
.meta{font-size:.83rem;color:var(--muted);margin:0 0 2.2rem}
ul,ol{padding-left:1.3rem;margin:0 0 1.2rem}
li{margin-bottom:.5rem}
.card{display:block;background:var(--card);border:1px solid var(--line);border-radius:10px;
  padding:1.15rem 1.25rem;margin-bottom:1rem;text-decoration:none;color:inherit}
.card:hover{border-color:var(--accent)}
.card b{display:block;font-size:1.03rem;margin-bottom:.35rem;line-height:1.5}
.card span{font-size:.88rem;color:var(--muted)}
.note{background:var(--accent-soft);border-left:3px solid var(--accent);
  padding:.9rem 1.1rem;border-radius:0 6px 6px 0;margin:1.6rem 0;font-size:.94rem}
.note p:last-child{margin-bottom:0}
table{border-collapse:collapse;width:100%;font-size:.93rem;margin:0 0 1.4rem;display:block;overflow-x:auto}
th,td{border:1px solid var(--line);padding:.55rem .7rem;text-align:left;vertical-align:top}
th{background:var(--accent-soft);font-weight:600;white-space:nowrap}
footer.site{border-top:1px solid var(--line);margin-top:4rem;padding:2rem 0 3rem;
  font-size:.85rem;color:var(--muted)}
footer.site a{color:var(--muted)}