:root { --bg: #fff; --fg: #1d1d1f; --mute: #666; --line: #ddd; --link: #0b57d0; --card: #f5f5f7;
        --d1: #1e7b36; --d2: #7d6400; --d3: #b92f2f; }
@media (prefers-color-scheme: dark) {
  :root { --bg: #151517; --fg: #e8e8ea; --mute: #9a9aa0; --line: #333; --link: #8ab4f8; --card: #222226;
          --d1: #5fd17a; --d2: #f2cb2e; --d3: #ff6b6b; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 16px/1.5 system-ui, -apple-system, sans-serif; }
main { max-width: 960px; margin: 0 auto; padding: 16px; }
a { color: var(--link); }
nav { display: flex; flex-wrap: wrap; gap: 4px 16px; padding-bottom: 8px; border-bottom: 1px solid var(--line); }
h1 { font-size: 1.6rem; margin: 16px 0 4px; }
h2 { font-size: 1.25rem; margin: 28px 0 8px; }
h3 { font-size: 1.05rem; margin: 20px 0 6px; }
p.sub { color: var(--mute); margin-top: 0; }
ul.grid { list-style: none; padding: 0; display: grid; gap: 12px;
          grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); }
ul.grid a { display: block; text-decoration: none; color: var(--fg); background: var(--card);
            border-radius: 8px; overflow: hidden; }
ul.grid img { display: block; width: 100%; height: auto; aspect-ratio: 244 / 400; }
ul.grid span { display: block; padding: 6px 8px; font-weight: 600; }
.pager { display: flex; justify-content: space-between; gap: 8px; margin: 8px 0; }
.guide { display: block; width: 100%; height: auto; max-width: 1220px; aspect-ratio: 1220 / 2000;
         border-radius: 6px; }
table { border-collapse: collapse; margin: 6px 0 12px; font-variant-numeric: tabular-nums; }
th, td { border: 1px solid var(--line); padding: 3px 9px; text-align: right; }
th:first-child, td:first-child { text-align: left; }
th { background: var(--card); }
.d1 { color: var(--d1); } .d2 { color: var(--d2); } .d3 { color: var(--d3); }
.wrap { overflow-x: auto; }
@media (max-width: 480px) { th, td { padding: 3px 5px; font-size: 0.875rem; } }
details { margin: 4px 0; } summary { cursor: pointer; font-weight: 600; }
footer { margin-top: 32px; padding-top: 8px; border-top: 1px solid var(--line); color: var(--mute);
         font-size: 0.875rem; }