:root {
  color-scheme: light;
  --page: #f9f9f7; --surface: #fcfcfb; --ink: #0b0b0b; --ink-2: #52514e; --muted: #6f6d67;
  --grid: #e1e0d9; --brand: #111729; --accent: #256abf; --note: #fff4d6; --note-ink: #5c4400;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --page: #0d0d0d; --surface: #1a1a19; --ink: #fff; --ink-2: #c3c2b7; --muted: #9a988f;
    --grid: #2c2c2a; --brand: #0b0f1c; --accent: #6da7ec; --note: #3a2f0e; --note-ink: #f3dfa6;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --page: #0d0d0d; --surface: #1a1a19; --ink: #fff; --ink-2: #c3c2b7; --muted: #9a988f;
  --grid: #2c2c2a; --brand: #0b0f1c; --accent: #6da7ec; --note: #3a2f0e; --note-ink: #f3dfa6;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--page); color: var(--ink); font-size: 15.5px; line-height: 1.6; }
header { background: var(--brand); }
header div { max-width: 760px; margin: 0 auto; padding: 12px 16px; }
header a { color: #fff; font-weight: 650; text-decoration: none; display: inline-flex; gap: 10px; align-items: center; }
main { max-width: 760px; margin: 0 auto; padding: 28px 16px 64px; }
h1 { font-size: 28px; line-height: 1.2; margin: 0 0 20px; }
h2 { font-size: 17px; margin: 28px 0 6px; }
p, li { color: var(--ink-2); }
a { color: var(--accent); }
dl { display: grid; grid-template-columns: 200px 1fr; gap: 4px 16px; margin: 0; }
dt { color: var(--muted); }
dd { margin: 0; }
.note { background: var(--note); color: var(--note-ink); border-radius: 10px; padding: 12px 14px; font-size: 14px; }
footer { max-width: 760px; margin: 0 auto; padding: 0 16px 40px; font-size: 13.5px; color: var(--muted); display: flex; flex-wrap: wrap; gap: 6px 14px; }
main { overflow-wrap: anywhere; }
@media (max-width: 560px) { dl { grid-template-columns: 1fr; } dt { margin-top: 8px; } }
table { width: 100%; border-collapse: collapse; margin: 12px 0; font-size: 14.5px; }
th, td { text-align: left; padding: 6px 8px; border-bottom: 1px solid var(--grid, #e1e0d9); vertical-align: top; }