:root {
  --bg: #f6efe0; --paper: #fffdf7; --ink: #2b1d16; --muted: #6e5747; --line: #e6d6b4; --red: #7a2318; --link: #2f5fb3; --note: #fff3c4;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #1d1814; --paper: #29221c; --ink: #f2e9da; --muted: #bba792; --line: #4a3d31; --red: #e2a27a; --link: #8fb4ff; --note: #3a3020; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.65 system-ui, "Segoe UI", Roboto, Arial, sans-serif; }
a { color: var(--link); }
header.top { background: #7a2318; color: #fff4d6; padding: 12px 16px; }
header.top a { color: #fff4d6; text-decoration: none; font-weight: 700; }
header.top nav { display: flex; flex-wrap: wrap; gap: 6px 14px; margin-top: 6px; font-size: 14px; }
header.top nav a { font-weight: 500; opacity: .85; }
header.top nav a[aria-current] { opacity: 1; text-decoration: underline; }
main { max-width: 820px; margin: 0 auto; padding: 20px 16px 60px; }
article { background: var(--paper); border: 1px solid var(--line); border-radius: 14px; padding: 22px 24px; }
h1 { margin: 0 0 4px; font-size: 26px; color: var(--red); line-height: 1.3; }
h2 { margin: 28px 0 8px; font-size: 19px; color: var(--red); }
h3 { margin: 18px 0 6px; font-size: 16.5px; }
.meta { color: var(--muted); font-size: 14px; margin: 0 0 16px; }
.note { background: var(--note); border: 1px solid #e8c95a; border-radius: 10px; padding: 10px 14px; margin: 14px 0; }
.note.red { border-color: #e08b80; }
table { width: 100%; border-collapse: collapse; margin: 10px 0; font-size: 14.5px; display: block; overflow-x: auto; }
th, td { border: 1px solid var(--line); padding: 7px 9px; text-align: left; vertical-align: top; }
th { background: rgba(122, 35, 24, .08); }
li { margin: 4px 0; }
.toc { font-size: 14.5px; columns: 2; column-gap: 24px; padding-left: 20px; }
@media (max-width: 600px) { .toc { columns: 1; } article { padding: 16px 14px; } h1 { font-size: 22px; } }
.missing { color: #b23a2a; font-style: italic; }
footer.foot { max-width: 820px; margin: 0 auto; padding: 0 16px 40px; color: var(--muted); font-size: 13.5px; text-align: center; }
.back { display: inline-block; margin-top: 18px; font-weight: 600; }