:root {
  --bg: #ffffff;
  --bg-soft: #f6f7f9;
  --fg: #1d2330;
  --fg-muted: #5b6475;
  --border: #e3e6eb;
  --accent: #1f5fbf;
  --accent-soft: #e8f0fc;
  --note: #1f5fbf;
  --tip: #1a7f4b;
  --warning: #b25e09;
  --shadow: 0 1px 2px rgb(16 24 40 / 6%), 0 4px 12px rgb(16 24 40 / 6%);
  --sidebar: 280px;
  --toc: 220px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12151b;
    --bg-soft: #1a1e26;
    --fg: #e6e9ef;
    --fg-muted: #9aa3b2;
    --border: #2b313c;
    --accent: #7aa7ff;
    --accent-soft: #1d2a42;
    --note: #7aa7ff;
    --tip: #4cc38a;
    --warning: #f0a35e;
    --shadow: none;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }

html { scroll-padding-top: 72px; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.65 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

a { color: var(--accent); }

code {
  font: 0.9em ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.05em 0.35em;
}

pre {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 16px;
  overflow-x: auto;
}

pre code { border: 0; padding: 0; background: none; }

.topbar { display: none; }

.shell {
  display: grid;
  grid-template-columns: var(--sidebar) minmax(0, 1fr) var(--toc);
  min-height: 100vh;
}

.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  padding: 24px 20px;
  background: var(--bg-soft);
  border-right: 1px solid var(--border);
}

.brand { display: block; font-weight: 700; font-size: 1.1rem; color: var(--fg); text-decoration: none; }

.version { margin: 2px 0 16px; color: var(--fg-muted); font-size: 0.85rem; }

.search { position: relative; margin-bottom: 20px; }

.search input {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  color: var(--fg);
  font: inherit;
  font-size: 0.9rem;
}

#search-results {
  list-style: none;
  margin: 6px 0 0;
  padding: 6px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

#search-results li a { display: block; padding: 6px 8px; border-radius: 6px; text-decoration: none; color: var(--fg); font-size: 0.9rem; }

#search-results li a:hover, #search-results li a:focus { background: var(--accent-soft); }

#search-results small { display: block; color: var(--fg-muted); }

.nav-group { margin-bottom: 18px; }

.nav-title { margin: 0 0 4px; font-size: 0.75rem; font-weight: 700; letter-spacing: 0.04em; text-transform: uppercase; color: var(--fg-muted); }

.nav-group ul { list-style: none; margin: 0; padding: 0; }

.nav-group a {
  display: block;
  padding: 4px 10px;
  margin: 1px 0;
  border-radius: 6px;
  color: var(--fg);
  text-decoration: none;
  font-size: 0.93rem;
}

.nav-group a:hover { background: var(--accent-soft); }

.nav-group a[aria-current="page"] { background: var(--accent-soft); color: var(--accent); font-weight: 600; }

main { padding: 40px 48px 24px; max-width: 920px; width: 100%; }

h1 { font-size: 2rem; line-height: 1.25; margin: 0 0 8px; }

h2 { font-size: 1.45rem; margin: 2.2em 0 0.6em; padding-top: 0.6em; border-top: 1px solid var(--border); }

h3 { font-size: 1.15rem; margin: 1.6em 0 0.5em; }

h2, h3, h4 { position: relative; }

.anchor { position: absolute; left: -1.1em; opacity: 0; text-decoration: none; color: var(--fg-muted); font-weight: 400; }

h2:hover .anchor, h3:hover .anchor, h4:hover .anchor { opacity: 1; }

.lead { font-size: 1.1rem; color: var(--fg-muted); margin-top: 0; }

.roles { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; margin: 0 0 12px; font-size: 0.85rem; color: var(--fg-muted); }

.chip { display: inline-block; padding: 1px 10px; border-radius: 999px; background: var(--accent-soft); color: var(--accent); font-weight: 600; }

ol li, ul li { margin: 0.25em 0; }

table { border-collapse: collapse; width: 100%; margin: 1em 0; font-size: 0.93rem; display: block; overflow-x: auto; }

th, td { border: 1px solid var(--border); padding: 8px 10px; text-align: left; vertical-align: top; }

th { background: var(--bg-soft); }

figure { margin: 1.2em 0 1.6em; }

figure img, .shot img {
  display: block;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

figcaption { margin-top: 8px; font-size: 0.88rem; color: var(--fg-muted); text-align: center; }

.shot-missing {
  display: block;
  padding: 24px;
  border: 2px dashed var(--warning);
  border-radius: 8px;
  color: var(--warning);
  text-align: center;
}

blockquote { margin: 1.2em 0; padding: 10px 16px; border-left: 4px solid var(--border); background: var(--bg-soft); border-radius: 0 8px 8px 0; }

blockquote p { margin: 0.4em 0; }

.callout-note { border-left-color: var(--note); }
.callout-note strong:first-child { color: var(--note); }
.callout-tip { border-left-color: var(--tip); }
.callout-tip strong:first-child { color: var(--tip); }
.callout-warning { border-left-color: var(--warning); }
.callout-warning strong:first-child { color: var(--warning); }

.toc { position: sticky; top: 0; height: 100vh; overflow-y: auto; padding: 44px 16px 24px 0; font-size: 0.85rem; }

.toc p { margin: 0 0 6px; font-weight: 700; color: var(--fg-muted); }

.toc ul { list-style: none; margin: 0; padding: 0 0 0 10px; border-left: 1px solid var(--border); }

.toc a { display: block; padding: 3px 0; color: var(--fg-muted); text-decoration: none; }

.toc a:hover { color: var(--accent); }

.pager { display: flex; justify-content: space-between; gap: 16px; margin-top: 48px; }

.pager a { flex: 1; max-width: 48%; padding: 12px 16px; border: 1px solid var(--border); border-radius: 10px; text-decoration: none; color: var(--fg); }

.pager a:hover { border-color: var(--accent); }

.pager span { display: block; font-size: 0.8rem; color: var(--fg-muted); }

.pager .next { text-align: right; margin-left: auto; }

.footer { margin-top: 40px; padding-top: 16px; border-top: 1px solid var(--border); font-size: 0.82rem; color: var(--fg-muted); }

.home-section h2 { border-top: 0; margin-top: 1.6em; }

.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 12px; }

.card { display: block; padding: 14px 16px; border: 1px solid var(--border); border-radius: 10px; text-decoration: none; color: var(--fg); background: var(--bg); }

.card:hover { border-color: var(--accent); box-shadow: var(--shadow); }

.card strong { display: block; margin-bottom: 4px; }

.card span { font-size: 0.88rem; color: var(--fg-muted); }

@media (max-width: 1200px) {
  .shell { grid-template-columns: var(--sidebar) minmax(0, 1fr); }
  .toc { display: none; }
}

@media (max-width: 820px) {
  .topbar {
    display: flex;
    gap: 12px;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 10;
    padding: 10px 16px;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
  }
  .topbar a { color: var(--fg); font-weight: 700; text-decoration: none; }
  .menu-button { cursor: pointer; padding: 4px 10px; border: 1px solid var(--border); border-radius: 6px; font-size: 0.9rem; }
  .shell { display: block; }
  .sidebar { display: none; position: static; height: auto; border-right: 0; border-bottom: 1px solid var(--border); }
  .nav-toggle:checked ~ .shell .sidebar { display: block; }
  main { padding: 24px 16px; }
  h1 { font-size: 1.6rem; }
  .anchor { display: none; }
  .pager { flex-direction: column; }
  .pager a { max-width: none; }
}