:root { --accent: #2563eb; --text: #1f2937; --muted: #6b7280; --line: #e5e7eb; --code-bg: #f3f4f6; --nav-bg: #f9fafb; }
* { box-sizing: border-box; }
body { margin: 0; font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans", "Helvetica Neue", Arial, sans-serif; color: var(--text); display: flex; }
nav { position: sticky; top: 0; height: 100vh; overflow-y: auto; width: 290px; flex: none; padding: 18px 14px; border-right: 1px solid var(--line); background: var(--nav-bg); }
nav .brand { font-weight: 700; font-size: 16px; margin: 0 8px 12px; }
nav .toc a { display: block; padding: 5px 8px; border-radius: 6px; color: var(--text); text-decoration: none; font-size: 14px; }
nav .toc a:hover { background: #eef2ff; }
nav .toc a.current { background: var(--accent); color: #fff; }
.search { position: relative; margin: 0 4px 12px; }
.search input { width: 100%; padding: 7px 10px; border: 1px solid #d1d5db; border-radius: 6px; font: inherit; font-size: 14px; background: #fff; }
.search input:focus { outline: 2px solid var(--accent); outline-offset: -1px; }
.results { display: none; margin-top: 6px; background: #fff; border: 1px solid var(--line); border-radius: 6px; box-shadow: 0 4px 14px rgba(0,0,0,.08); max-height: 60vh; overflow-y: auto; }
.results.open { display: block; }
.results a { display: block; padding: 7px 10px; text-decoration: none; color: var(--text); border-bottom: 1px solid var(--line); font-size: 13px; }
.results a:last-child { border-bottom: 0; }
.results a:hover, .results a.active { background: #eef2ff; }
.results .t { font-weight: 600; display: block; }
.results .p { color: var(--muted); font-size: 12px; display: block; }
.results .s { color: var(--muted); font-size: 12px; display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.results .none { padding: 8px 10px; color: var(--muted); font-size: 13px; }
main { flex: 1; min-width: 0; max-width: 1000px; padding: 32px 48px 80px; }
h1 { font-size: 2em; margin-top: 0; } h2 { margin-top: 2em; padding-bottom: 6px; border-bottom: 1px solid var(--line); }
h2, h3, h4 { scroll-margin-top: 12px; }
a { color: var(--accent); }
img { max-width: 100%; border: 1px solid var(--line); border-radius: 6px; box-shadow: 0 1px 4px rgba(0,0,0,.06); }
td img { max-width: 220px; }
code { background: var(--code-bg); padding: 1px 5px; border-radius: 4px; font-size: .9em; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
pre { background: #111827; color: #e5e7eb; padding: 14px 16px; border-radius: 8px; overflow-x: auto; line-height: 1.45; }
pre code { background: none; padding: 0; color: inherit; font-size: 13.5px; }
table { border-collapse: collapse; width: 100%; margin: 1em 0; font-size: 15px; display: block; overflow-x: auto; }
th, td { border: 1px solid var(--line); padding: 6px 10px; text-align: left; vertical-align: top; }
th { background: var(--nav-bg); }
blockquote { margin: 1em 0; padding: 10px 16px; border-left: 4px solid var(--accent); background: #eff6ff; border-radius: 0 6px 6px 0; }
blockquote p { margin: .3em 0; }
.pager { display: flex; justify-content: space-between; gap: 16px; margin-top: 48px; padding-top: 16px; border-top: 1px solid var(--line); }
.menu { display: none; }
@media (max-width: 860px) {
    body { display: block; }
    nav { position: static; width: auto; height: auto; border-right: 0; border-bottom: 1px solid var(--line); }
    nav .toc { display: none; } nav.open .toc { display: block; }
    .menu { display: inline-block; float: right; border: 1px solid var(--line); background: #fff; border-radius: 6px; padding: 3px 9px; font: inherit; font-size: 13px; }
    main { padding: 20px; }
}
@media print {
    body { display: block; font-size: 11pt; }
    nav, .pager, .search { display: none !important; }
    main { max-width: none; padding: 0; }
    a { color: inherit; text-decoration: none; }
    pre { background: #f6f8fa; color: #111; border: 1px solid #ddd; white-space: pre-wrap; }
    img { box-shadow: none; max-width: 85%; break-inside: avoid; }
    h1, h2, h3 { break-after: avoid; } table, pre, blockquote { break-inside: avoid; }
    blockquote { background: none; }
}