:root {
  --seed-bg: #ffffff;
  --seed-fg: #0d0d0d;
  --seed-surface: #f6f7f9;
  --seed-primary: #ff8f40;
  --bg: var(--seed-bg);
  --fg: var(--seed-fg);
  --ink: var(--seed-fg);
  --surface: var(--seed-surface);
  --primary: var(--seed-primary);
  --muted: color-mix(in srgb, var(--seed-fg) 58%, var(--seed-bg));
  --dim: color-mix(in srgb, var(--seed-fg) 42%, var(--seed-bg));
  --border: color-mix(in srgb, var(--seed-fg) 10%, transparent);
  --border-soft: color-mix(in srgb, var(--seed-fg) 7%, transparent);
  --on-primary: #fff;
  --radius: 14px;
  --font: Inter, system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;
  --font-serif: "Source Serif 4", Georgia, serif;
  color-scheme: light;
}

:root[data-theme="dark"] {
  --seed-bg: #0b0b0d;
  --seed-fg: #ededf0;
  --seed-surface: #15161a;
  --seed-primary: #ff9d55;
  --on-primary: #1a0f08;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.65;
}

a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; background: none; border: 0; color: inherit; }

.wiki-progress {
  position: fixed; top: 0; left: 0; right: 0; height: 3px; z-index: 40;
  background: color-mix(in srgb, var(--primary) 18%, transparent);
}
.wiki-progress > i {
  display: block; height: 100%; width: 100%; transform: scaleX(0); transform-origin: left center;
  background: var(--primary); pointer-events: none;
}

.wiki-header {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  height: 56px; padding: 0 20px;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 500; }
.brand img { width: 28px; height: 28px; border-radius: 8px; }
.brand b { font-weight: 650; }
.brand small { color: var(--muted); font-weight: 500; margin-left: 4px; }
.header-actions { display: flex; align-items: center; gap: 8px; }
.icon-btn {
  width: 36px; height: 36px; border-radius: 10px; display: grid; place-items: center;
  border: 1px solid var(--border); color: var(--muted);
}
.icon-btn .moon { display: none; }
:root[data-theme="dark"] .icon-btn .moon { display: block; }
:root[data-theme="dark"] .icon-btn .sun { display: none; }

.wiki-shell {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  min-height: calc(100dvh - 56px);
}
.wiki-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 220px;
  align-items: start;
}

.wiki-sidebar {
  border-right: 1px solid var(--border);
  background: var(--surface);
  padding: 20px 14px 40px;
  overflow: auto;
}
.wiki-group { margin-bottom: 22px; }
.wiki-group-title {
  margin: 0 10px 8px;
  font-size: 11px; letter-spacing: .08em; text-transform: uppercase;
  color: var(--dim); font-weight: 650;
}
.wiki-link {
  display: block; padding: 7px 10px; border-radius: 10px;
  color: var(--muted); font-size: 13.5px;
}
.wiki-link:hover { color: var(--ink); background: color-mix(in srgb, var(--bg) 70%, transparent); }
.wiki-link.is-active {
  color: var(--ink); background: var(--bg);
  box-shadow: inset 0 0 0 1px var(--border);
}

.wiki-main { min-width: 0; padding: 32px 36px 80px; }
.wiki-kicker { color: var(--dim); font-size: 12px; letter-spacing: .06em; text-transform: uppercase; margin: 0 0 8px; }
.wiki-title { font-family: var(--font-serif); font-size: 34px; letter-spacing: -.03em; margin: 0 0 24px; line-height: 1.2; }
.wiki-status { color: var(--muted); font-size: 13px; min-height: 1em; }

.wiki-article { max-width: 820px; font-size: 16px; }
.wiki-article :is(h1, h2, h3, h4) { line-height: 1.25; letter-spacing: -.02em; scroll-margin-top: 72px; }
.wiki-article h1 { font-size: 28px; margin: 1.6em 0 .6em; }
.wiki-article h2 { font-size: 22px; margin: 1.5em 0 .5em; padding-top: 8px; border-top: 1px solid var(--border-soft); }
.wiki-article h3 { font-size: 18px; margin: 1.3em 0 .4em; }
.wiki-article p, .wiki-article li { color: color-mix(in srgb, var(--ink) 88%, var(--bg)); }
.wiki-article a { color: color-mix(in srgb, var(--primary) 70%, var(--ink)); text-decoration: underline; text-underline-offset: 3px; }
.wiki-article code {
  font-family: var(--font-mono); font-size: .88em;
  background: var(--surface); padding: .12em .35em; border-radius: 6px;
  border: 1px solid var(--border);
}
.wiki-article pre {
  overflow: auto; padding: 14px 16px; border-radius: 12px;
  background: var(--surface); border: 1px solid var(--border);
  font-family: var(--font-mono); font-size: 13px; line-height: 1.55;
}
.wiki-article pre code { background: none; border: 0; padding: 0; }
.wiki-article table { border-collapse: collapse; width: 100%; font-size: 14.5px; margin: 16px 0 24px; }
.wiki-article th, .wiki-article td { border: 1px solid var(--border); padding: 8px 10px; text-align: left; vertical-align: top; }
.wiki-article th { background: var(--surface); }
.wiki-article blockquote {
  margin: 16px 0; padding: 2px 14px; border-left: 3px solid var(--primary);
  color: var(--muted);
}
.wiki-article hr { border: 0; border-top: 1px solid var(--border); margin: 28px 0; }
.wiki-article .mermaid, .wiki-diagram {
  background: var(--surface); padding: 16px; border-radius: 12px;
  overflow: auto; border: 1px solid var(--border);
}
.wiki-diagram svg { max-width: 100%; height: auto; }
.wiki-diagram-failed {
  margin: 16px 0; padding: 14px 16px; border-radius: 12px;
  border: 1px solid var(--border); background: var(--surface);
}
.wiki-diagram-note { margin: 0 0 10px; font-size: 13px; color: var(--muted); }
.wiki-diagram-failed pre {
  margin: 0; max-height: 240px;
}

.wiki-toc {
  position: sticky; top: 72px;
  padding: 28px 16px 40px 0;
  max-height: calc(100dvh - 88px); overflow: auto;
}
.wiki-toc-title {
  margin: 0 0 10px;
  font-size: 11px; letter-spacing: .08em; text-transform: uppercase;
  color: var(--dim); font-weight: 650;
}
.wiki-toc-link {
  display: block; padding: 5px 0 5px 10px;
  color: var(--muted); font-size: 13px; line-height: 1.4;
  border-left: 2px solid var(--border);
}
.wiki-toc-link.is-h3 { padding-left: 20px; font-size: 12.5px; }
.wiki-toc-link:hover { color: var(--ink); }
.wiki-toc-link.is-active { color: var(--ink); border-left-color: var(--primary); font-weight: 600; }

.wiki-toc-select-wrap { display: none; margin: 0 0 18px; }
.wiki-toc-select {
  width: 100%; height: 40px; padding: 0 12px;
  border-radius: 10px; border: 1px solid var(--border);
  background: var(--surface); color: var(--ink); font-size: 14px;
}
.visually-hidden {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

.wiki-pager {
  max-width: 820px; margin-top: 40px;
  display: grid; grid-template-columns: 1fr 1fr; gap: 12px;
}
.wiki-page-nav {
  display: flex; flex-direction: column; gap: 4px;
  padding: 14px 16px; border: 1px solid var(--border); border-radius: 12px;
  background: var(--surface);
}
.wiki-page-nav span { font-size: 12px; color: var(--dim); }
.wiki-page-nav--next { text-align: right; }

@media (max-width: 1100px) {
  .wiki-body { grid-template-columns: 1fr; }
  .wiki-toc { display: none; }
  .wiki-toc-select-wrap { display: block; }
}
@media (max-width: 860px) {
  .wiki-shell { grid-template-columns: 1fr; }
  .wiki-sidebar { border-right: 0; border-bottom: 1px solid var(--border); max-height: 280px; }
  .wiki-main { padding: 24px 18px 64px; }
  .wiki-title { font-size: 26px; }
  .wiki-pager { grid-template-columns: 1fr; }
}