:root { color-scheme: light; }
    body { font: 16px/1.6 system-ui, -apple-system, "Segoe UI", sans-serif; color: #0b0b0b; background: #f9f9f7; margin: 0; }
    main { max-width: 980px; margin: 0 auto; padding: 32px 20px 120px; }
    h1 { font-size: 24px; line-height: 1.25; margin: 8px 0 4px; }
    h2 { font-size: 18px; margin: 36px 0 8px; }
    p, li { max-width: 760px; color: #1c1c1a; }
    .sub, .note { color: #52514e; font-size: 13.5px; }
    code { font: 13px ui-monospace, Menlo, monospace; background: #f3f2ee; border-radius: 4px; padding: 1px 5px; }
    table.xcheck { border-collapse: collapse; font-size: 13.5px; margin: 12px 0; width: 100%; }
    .xcheck th, .xcheck td { text-align: left; padding: 5px 12px 5px 0; border-bottom: 1px solid #e1e0d9; font-variant-numeric: tabular-nums; vertical-align: top; }
    .xcheck th { color: #52514e; font-weight: 600; }
    .xcheck .note { font-size: 12px; }
    dsv3-memory { display: block; margin: 14px 0; }

/* series navigation (injected by series.js) */
.series-strip { font-size: 13px; color: #52514e; margin: 0 0 6px; }
.series-strip a { color: inherit; }
.series-nav { display: flex; gap: 12px; margin-top: 48px; border-top: 1px solid #e1e0d9; padding-top: 16px; }
.series-nav .card { flex: 1; border: 1px solid #e1e0d9; border-radius: 8px; padding: 10px 14px;
  text-decoration: none; color: #1c1c1a; background: #fff; display: flex; flex-direction: column;
  gap: 2px; min-width: 0; }
.series-nav a.card:hover { border-color: #c3c2b7; box-shadow: 0 1px 6px rgba(11,11,11,0.06); }
.series-nav .card small { color: #898781; font-size: 12px; }
.series-nav .card b { font-size: 14px; line-height: 1.35; font-weight: 600; }
.series-nav .next { text-align: right; align-items: flex-end; }
.series-nav .empty { border: none; background: none; }
.series-nav .up { flex: 0 0 auto; justify-content: center; text-align: center; }
h3 { font-size: 16.5px; margin: 30px 0 6px; }