:root {
  color-scheme: light;
  --manual-bg: #f7f7f4;
  --manual-panel: #ffffff;
  --manual-border: #d9ded8;
  --manual-text: #18201c;
  --manual-muted: #5b6860;
  --manual-accent: #147a68;
  --manual-code-bg: #111917;
  --manual-code-text: #e8f1ec;
}

* {
  box-sizing: border-box;
}

.manual-page {
  min-height: 100vh;
  margin: 0;
  background: var(--manual-bg);
  color: var(--manual-text);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  letter-spacing: 0;
}

.manual-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 64px;
  padding: 0 32px;
  border-bottom: 1px solid var(--manual-border);
  background: rgba(247, 247, 244, 0.95);
  backdrop-filter: blur(12px);
}

.manual-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--manual-text);
  font-weight: 700;
  text-decoration: none;
}

.manual-brand-mark {
  display: inline-grid;
  width: 32px;
  height: 32px;
  place-items: center;
  border: 1px solid #1d4f45;
  border-radius: 8px;
  background: #123f37;
  color: #f4fbf8;
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 14px;
}

.manual-top-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 6px 14px;
  font-size: 14px;
}

.manual-top-nav a,
.manual-sidebar a,
.manual-content a {
  color: var(--manual-accent);
}

.manual-top-nav a {
  text-decoration: none;
}

.manual-shell {
  display: grid;
  grid-template-columns: minmax(220px, 280px) minmax(0, 1fr);
  gap: 36px;
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
  padding: 32px 0 64px;
}

.manual-sidebar {
  position: sticky;
  top: 88px;
  align-self: start;
  padding: 18px;
  border: 1px solid var(--manual-border);
  border-radius: 8px;
  background: var(--manual-panel);
}

.manual-sidebar nav {
  display: grid;
  gap: 10px;
}

.manual-sidebar a {
  font-size: 14px;
  line-height: 1.35;
  text-decoration: none;
}

.manual-main {
  min-width: 0;
}

.manual-content {
  max-width: 820px;
  padding: 36px;
  border: 1px solid var(--manual-border);
  border-radius: 8px;
  background: var(--manual-panel);
  line-height: 1.65;
}

.manual-content h1,
.manual-content h2,
.manual-content h3,
.manual-content h4 {
  color: var(--manual-text);
  letter-spacing: 0;
  scroll-margin-top: 88px;
}

.manual-content h1 {
  margin-top: 0;
  font-size: 2.2rem;
  line-height: 1.12;
}

.manual-content h2 {
  margin-top: 2.2em;
  border-top: 1px solid var(--manual-border);
  padding-top: 1.1em;
}

.manual-content p,
.manual-content li {
  color: var(--manual-muted);
}

.manual-content strong,
.manual-content code {
  color: var(--manual-text);
}

.manual-content pre {
  overflow-x: auto;
  padding: 18px;
  border-radius: 8px;
  background: var(--manual-code-bg);
  color: var(--manual-code-text);
}

.manual-content pre code {
  color: inherit;
  background: transparent;
}

.manual-content code {
  border-radius: 4px;
  background: #eef2ee;
  padding: 0.1em 0.3em;
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 0.92em;
}

.manual-content table {
  display: block;
  width: 100%;
  overflow-x: auto;
  border-collapse: collapse;
}

.manual-content th,
.manual-content td {
  border: 1px solid var(--manual-border);
  padding: 10px 12px;
  text-align: left;
  vertical-align: top;
}

.manual-content th {
  background: #edf3ef;
  color: var(--manual-text);
}

.manual-content iframe {
  max-width: 100%;
  border: 1px solid var(--manual-border);
  border-radius: 8px;
}

@media (max-width: 880px) {
  .manual-header {
    position: static;
    align-items: flex-start;
    flex-direction: column;
    padding: 16px 20px;
  }

  .manual-top-nav {
    justify-content: flex-start;
  }

  .manual-shell {
    grid-template-columns: 1fr;
    width: min(100% - 28px, 760px);
    padding-top: 20px;
  }

  .manual-sidebar {
    position: static;
  }

  .manual-content {
    padding: 24px 18px;
  }

  .manual-content h1 {
    font-size: 1.8rem;
  }
}