:root {
  color-scheme: light;
  --bg: #f8fafc;
  --panel: #ffffff;
  --border: #e2e8f0;
  --text: #0f172a;
  --muted: #475569;
  --muted-2: #64748b;
  --link: #2563eb;
  --link-hover: #1d4ed8;
  --code-bg: #f1f5f9;
  --code-border: #e2e8f0;
  --shadow: 0 1px 2px rgba(15, 23, 42, 0.06);
  --shadow-lg: 0 10px 40px rgba(15, 23, 42, 0.1);
  --radius: 14px;
  --radius-sm: 10px;
  --focus: 0 0 0 4px rgba(37, 99, 235, 0.18);
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  background: var(--bg);
  color: var(--text);
}

a {
  color: var(--link);
  text-decoration: none;
}
a:hover {
  color: var(--link-hover);
  text-decoration: underline;
}

.top {
  display: flex;
  gap: 16px;
  align-items: center;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  background: var(--panel);
  position: sticky;
  top: 0;
  z-index: 10;
  box-shadow: var(--shadow);
}

.brand {
  font-weight: 700;
  white-space: nowrap;
}

.mount-nav {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.mount-link {
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  color: var(--muted);
}
.mount-link:hover {
  text-decoration: none;
  background: rgba(15, 23, 42, 0.03);
}
.mount-link.active {
  border-color: var(--border);
  color: var(--text);
  background: rgba(15, 23, 42, 0.03);
}

.search {
  margin-left: auto;
  position: relative;
  width: min(420px, 40vw);
}

.gh-link {
  margin-left: auto;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: rgba(15, 23, 42, 0.02);
  color: var(--muted);
}

.gh-link:hover {
  text-decoration: none;
  color: var(--text);
  background: rgba(15, 23, 42, 0.04);
}

.gh-link:focus {
  outline: none;
  box-shadow: var(--focus);
  border-color: rgba(37, 99, 235, 0.35);
}

.search input {
  width: 100%;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: #ffffff;
  color: var(--text);
}

.search input:focus {
  outline: none;
  box-shadow: var(--focus);
  border-color: rgba(37, 99, 235, 0.35);
}

.search-results {
  position: absolute;
  inset-inline: 0;
  top: calc(100% + 8px);
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  display: none;
  max-height: 60vh;
  box-shadow: var(--shadow-lg);
}

.search-results a {
  display: block;
  padding: 10px 12px;
  border-top: 1px solid var(--border);
}
.search-results a:hover {
  text-decoration: none;
  background: rgba(15, 23, 42, 0.03);
}
.search-results a:first-child {
  border-top: none;
}

.layout {
  display: grid;
  grid-template-columns: 300px 1fr;
  min-height: calc(100vh - 56px);
}

.sidebar {
  border-right: 1px solid var(--border);
  padding: 16px 14px;
  background: var(--panel);
  overflow: auto;
}

.sidebar-title {
  font-weight: 600;
  margin: 4px 8px 10px;
  color: var(--muted);
}

.main {
  padding: 28px 18px;
}

.doc {
  max-width: 980px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px 28px;
  box-shadow: var(--shadow);
}

.lead {
  font-size: 18px;
  color: var(--muted);
  margin-top: 8px;
}

.site-title {
  margin: 0;
  font-size: 34px;
  letter-spacing: -0.02em;
}

.section-title {
  margin-top: 28px;
}

.doc-top {
  display: flex;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
  color: var(--muted);
  font-size: 13px;
  margin: 0;
}

.breadcrumbs .sep {
  color: var(--muted);
}

.edit {
  font-size: 13px;
  color: var(--muted);
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: rgba(15, 23, 42, 0.02);
}

.edit:hover {
  text-decoration: none;
  background: rgba(15, 23, 42, 0.04);
}

.content {
  line-height: 1.7;
  font-size: 15.5px;
}

.content h1 {
  margin-top: 0;
  font-size: 34px;
  letter-spacing: -0.02em;
}

.content h2 {
  margin-top: 32px;
  font-size: 24px;
  letter-spacing: -0.01em;
}

.content h3 {
  margin-top: 22px;
  font-size: 18px;
}

.content p,
.content ul,
.content ol,
.content pre,
.content table,
.content blockquote {
  margin: 14px 0;
}

.content ul,
.content ol {
  padding-left: 22px;
}

.content li {
  margin: 6px 0;
}

.content a {
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.content a:hover {
  text-decoration-thickness: 2px;
}

.content code {
  padding: 0.12em 0.35em;
  border-radius: 8px;
  background: var(--code-bg);
  border: 1px solid var(--code-border);
}

pre {
  padding: 14px 16px;
  border-radius: var(--radius);
  overflow: auto;
  background: var(--code-bg);
  border: 1px solid var(--code-border);
}

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

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

blockquote {
  margin: 16px 0;
  padding: 12px 14px;
  border-left: 4px solid var(--border);
  background: rgba(15, 23, 42, 0.02);
  color: var(--muted);
  border-radius: 0 var(--radius) var(--radius) 0;
}

.content img {
  max-width: 100%;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}

table {
  border-collapse: collapse;
  width: 100%;
}

th,
td {
  border: 1px solid var(--border);
  padding: 8px 10px;
}

.mounts,
.page-list {
  list-style: none;
  padding-left: 0;
  margin: 14px 0 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 10px;
}

.mounts a,
.page-list a {
  display: block;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: #ffffff;
  color: var(--text);
}

.mounts a:hover,
.page-list a:hover {
  text-decoration: none;
  border-color: rgba(37, 99, 235, 0.35);
  box-shadow: var(--focus);
}

.nav-group {
  margin-top: 14px;
  margin-bottom: 6px;
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted-2);
}

.nav-items {
  list-style: none;
  padding-left: 0;
  margin: 0;
}

.nav-link {
  display: block;
  padding: 6px 8px;
  border-radius: var(--radius-sm);
  color: var(--muted);
}

.nav-link:hover {
  text-decoration: none;
  background: rgba(15, 23, 42, 0.03);
  color: var(--text);
}

.nav-link.active {
  color: var(--text);
  background: rgba(15, 23, 42, 0.04);
}

.footer {
  padding: 10px 16px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 13px;
  background: var(--panel);
}

@media (max-width: 920px) {
  .layout {
    grid-template-columns: 1fr;
  }
  .sidebar {
    display: none;
  }
  .search {
    width: min(360px, 45vw);
  }
  .main {
    padding: 16px 12px;
  }
  .doc {
    padding: 18px 16px;
  }
}