:root{--fg:#1d2327;--muted:#5b6670;--line:#d9dee3;--bg:#fff;--accent:#0b5cad;--warn:#7a4b00;--warnbg:#fff7e6}
*{box-sizing:border-box}
html{font-size:100%}
body{margin:0;font-family:system-ui,-apple-system,"Hiragino Sans","Yu Gothic",sans-serif;color:var(--fg);background:var(--bg);line-height:1.8}
a{color:var(--accent)}
a:focus-visible{outline:3px solid #f2b300;outline-offset:2px}
.ad-banner{background:var(--warnbg);color:var(--warn);border-bottom:1px solid #ecd9b0;padding:.5rem 1rem;font-size:.875rem}
.ad-banner p{margin:0;max-width:60rem;margin-inline:auto}
.site-header{display:flex;flex-wrap:wrap;gap:.5rem 1.5rem;align-items:baseline;justify-content:space-between;max-width:60rem;margin:0 auto;padding:1rem}
.site-name{font-weight:700;font-size:1.25rem;text-decoration:none;color:var(--fg)}
.site-header nav a{margin-right:1rem;font-size:.9rem}
main{max-width:60rem;margin:0 auto;padding:0 1rem 3rem}
h1{font-size:1.6rem;line-height:1.4;margin:1.5rem 0 .75rem}
h2{font-size:1.25rem;margin:2rem 0 .5rem;border-bottom:1px solid var(--line);padding-bottom:.25rem}
.meta,.note,small{color:var(--muted)}
.table-wrap{overflow-x:auto}
table{border-collapse:collapse;width:100%;min-width:34rem;font-size:.9rem}
th,td{border:1px solid var(--line);padding:.5rem .6rem;vertical-align:top;text-align:left}
thead th{background:#f4f6f8}
.kv th{width:9rem;background:#f4f6f8}
.pr{display:inline-block;font-size:.7rem;padding:0 .35rem;border:1px solid var(--warn);color:var(--warn);border-radius:3px}
.stale{color:var(--warn)}
.article-list{padding-left:1.2rem}
.site-footer{max-width:60rem;margin:0 auto;padding:1rem;border-top:1px solid var(--line);color:var(--muted);font-size:.85rem}
@media (prefers-reduced-motion:no-preference){a{transition:color .15s}}