:root {
  --sidebar-w: 260px;
  --toc-w: 220px;
  --space-5: 20px;
  --docs-bg-code: #F6F8FA;
  --docs-code-text: #24292F;
  --code-nav-bg: rgba(0,0,0,0.025);
  --code-btn-color: rgba(36,41,47,0.55);
  --code-btn-bg: rgba(36,41,47,0.06);
  --code-btn-border: rgba(36,41,47,0.14);
  --code-btn-hover-color: #24292F;
  --code-btn-hover-bg: rgba(36,41,47,0.11);
  --code-copied-color: var(--color-success);
  --color-success-soft: rgba(22,163,74,0.10);
}

html[data-theme="dark"] {
  --color-bg: #0A0A0B;
  --color-surface: #111113;
  --color-text: #EDEDED;
  --color-text-muted: #888888;
  --color-border: rgba(255,255,255,0.07);
  --color-border-strong: rgba(255,255,255,0.20);
  --color-link: #60A5FA;
  --color-link-hover: #93C5FD;
  --color-accent: #3B82F6;
  --color-accent-hover: #60A5FA;
  --color-accent-soft: rgba(59,130,246,0.12);
  --color-success: #4ADE80;
  --color-success-soft: rgba(22,163,74,0.12);
  --color-warning: #FCD34D;
  --color-warning-bg: rgba(217,119,6,0.10);
  --color-warning-border: rgba(217,119,6,0.30);
  --color-error: #F87171;
  --shadow-md: 0 4px 12px rgba(0,0,0,0.40);
  --docs-bg-code: #0D1117;
  --docs-code-text: #C9D1D9;
  --code-nav-bg: rgba(255,255,255,0.03);
  --code-btn-color: rgba(201,209,217,0.65);
  --code-btn-bg: rgba(255,255,255,0.06);
  --code-btn-border: rgba(255,255,255,0.10);
  --code-btn-hover-color: #C9D1D9;
  --code-btn-hover-bg: rgba(255,255,255,0.12);
}

html[data-theme="light"] {
  --color-bg: #F5F5F7;
  --color-surface: #FFFFFF;
  --color-text: #111111;
  --color-text-muted: #5C5C5C;
  --color-border: rgba(0,0,0,0.08);
  --color-border-strong: rgba(0,0,0,0.22);
  --color-link: #2563EB;
  --color-link-hover: #1D4ED8;
  --color-accent: #2563EB;
  --color-accent-hover: #1D4ED8;
  --color-accent-soft: rgba(37,99,235,0.08);
  --color-success: #16A34A;
  --color-success-soft: rgba(22,163,74,0.10);
  --color-warning: #D97706;
  --color-warning-bg: #FFFBEB;
  --color-warning-border: rgba(217,119,6,0.20);
  --color-error: #DC2626;
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --docs-bg-code: #F6F8FA;
  --docs-code-text: #24292F;
  --code-nav-bg: rgba(0,0,0,0.025);
  --code-btn-color: rgba(36,41,47,0.55);
  --code-btn-bg: rgba(36,41,47,0.06);
  --code-btn-border: rgba(36,41,47,0.14);
  --code-btn-hover-color: #24292F;
  --code-btn-hover-bg: rgba(36,41,47,0.11);
}

@media (prefers-color-scheme: dark) {
  html[data-theme="auto"],
  html:not([data-theme]) {
    --color-bg: #0A0A0B;
    --color-surface: #111113;
    --color-text: #EDEDED;
    --color-text-muted: #888888;
    --color-border: rgba(255,255,255,0.07);
    --color-border-strong: rgba(255,255,255,0.20);
    --color-link: #60A5FA;
    --color-link-hover: #93C5FD;
    --color-accent: #3B82F6;
    --color-accent-hover: #60A5FA;
    --color-accent-soft: rgba(59,130,246,0.12);
    --color-success: #4ADE80;
    --color-success-soft: rgba(22,163,74,0.12);
    --color-warning: #FCD34D;
    --color-warning-bg: rgba(217,119,6,0.10);
    --color-warning-border: rgba(217,119,6,0.30);
    --color-error: #F87171;
    --shadow-md: 0 4px 12px rgba(0,0,0,0.40);
    --docs-bg-code: #0D1117;
    --docs-code-text: #C9D1D9;
    --code-nav-bg: rgba(255,255,255,0.03);
    --code-btn-color: rgba(201,209,217,0.65);
    --code-btn-bg: rgba(255,255,255,0.06);
    --code-btn-border: rgba(255,255,255,0.10);
    --code-btn-hover-color: #C9D1D9;
    --code-btn-hover-bg: rgba(255,255,255,0.12);
  }
}

.docs-header {
  height: var(--topbar-h);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  padding: 0 var(--space-6);
  position: sticky;
  top: 0;
  z-index: 50;
  gap: var(--space-4);
}
.docs-header-brand {
  font-size: var(--font-size-lg);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text);
  text-decoration: none;
  flex: 0 0 auto;
}
.docs-header-brand:hover { color: var(--color-text); text-decoration: none; }
.docs-brand-accent { color: var(--color-accent); }
.docs-header-nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  margin-left: var(--space-2);
}
.docs-header-nav a {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  transition: color var(--transition), background var(--transition);
  white-space: nowrap;
}
.docs-header-nav a:hover { color: var(--color-text); background: var(--color-border); text-decoration: none; }
.docs-header-nav a.is-active { color: var(--color-text); background: var(--color-accent-soft); }
.docs-header-right {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex: 0 0 auto;
}
.docs-theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: transparent;
  cursor: pointer;
  color: var(--color-text-muted);
  transition: color var(--transition), border-color var(--transition), background var(--transition);
  flex-shrink: 0;
}
.docs-theme-toggle:hover { color: var(--color-text); border-color: var(--color-border-strong); background: var(--color-bg); }
.docs-header-action {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text);
  padding: var(--space-2) 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  cursor: pointer;
  text-decoration: none;
  transition: border-color var(--transition), background var(--transition), color var(--transition);
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  min-height: 36px;
}
.docs-header-action:hover { border-color: var(--color-border-strong); background: var(--color-bg); color: var(--color-text); text-decoration: none; }
.docs-header-action.is-primary { background: var(--color-accent); color: #fff; border-color: var(--color-accent); }
.docs-header-action.is-primary:hover { background: var(--color-accent-hover); border-color: var(--color-accent-hover); color: #fff; }
.docs-burger {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: none;
  background: none;
  cursor: pointer;
  color: var(--color-text);
  border-radius: var(--radius-md);
  transition: background var(--transition);
  flex-shrink: 0;
}
.docs-burger:hover { background: var(--color-border); }

.docs-layout {
  display: grid;
  grid-template-columns: var(--sidebar-w) 1fr var(--toc-w);
  max-width: 1440px;
  margin: 0 auto;
  min-height: calc(100vh - var(--topbar-h) - 30px);
  align-items: start;
}

.docs-sidebar {
  position: sticky;
  top: var(--topbar-h);
  height: calc(100vh - var(--topbar-h));
  overflow-y: auto;
  border-right: 1px solid var(--color-border);
  padding: var(--space-6) 0 var(--space-8);
  background: var(--color-surface);
}
.docs-sidebar::-webkit-scrollbar { width: 4px; }
.docs-sidebar::-webkit-scrollbar-track { background: transparent; }
.docs-sidebar::-webkit-scrollbar-thumb { background: var(--color-border); border-radius: 2px; }
.docs-sidebar-section { margin-bottom: var(--space-4); padding: 0 var(--space-4); }
.docs-sidebar-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  padding: 0 var(--space-2) var(--space-2);
  display: block;
}
.docs-sidebar-items { display: flex; flex-direction: column; gap: 2px; list-style: none; margin: 0; padding: 0; }
.docs-sidebar-link {
  display: flex;
  align-items: center;
  padding: 7px var(--space-3);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition), background var(--transition);
  min-height: 36px;
  gap: var(--space-2);
}
.docs-sidebar-link:hover { color: var(--color-text); background: var(--color-bg); text-decoration: none; }
.docs-sidebar-link.is-active { color: var(--color-accent); background: var(--color-accent-soft); font-weight: 600; }
.docs-sidebar-ref {
  margin-left: auto;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  background: var(--color-accent-soft);
  color: var(--color-accent);
  flex-shrink: 0;
}
.docs-sidebar-divider { height: 1px; background: var(--color-border); margin: var(--space-2) var(--space-4) var(--space-4); }
.docs-sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.50);
  z-index: 40;
}
.docs-sidebar-overlay.is-open { display: block; }

.docs-main {
  padding: var(--space-8) var(--space-12);
  min-width: 0;
  max-width: 800px;
}

.docs-breadcrumbs {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
  flex-wrap: wrap;
}
.docs-breadcrumbs a { color: var(--color-text-muted); }
.docs-breadcrumbs a:hover { color: var(--color-accent); text-decoration: none; }
.docs-breadcrumbs-sep { opacity: 0.4; user-select: none; }
.docs-breadcrumbs-current { color: var(--color-text); }

.docs-page-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-8);
  flex-wrap: wrap;
}
.docs-act-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--color-text-muted);
  padding: 6px var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  cursor: pointer;
  text-decoration: none;
  transition: color var(--transition), border-color var(--transition), background var(--transition);
  white-space: nowrap;
  min-height: 32px;
}
.docs-act-btn:hover { color: var(--color-text); border-color: var(--color-border-strong); background: var(--color-bg); text-decoration: none; }
.docs-act-btn.is-copied { color: var(--color-success); border-color: var(--color-success); }
.docs-act-spacer { flex: 1; min-width: var(--space-2); }

.docs-content h1 {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text);
  margin-bottom: var(--space-6);
  line-height: 1.25;
}
.docs-content h2 {
  font-size: var(--font-size-xl);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--color-text);
  margin-top: var(--space-12);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--color-border);
  scroll-margin-top: calc(var(--topbar-h) + 20px);
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
}
.docs-content h3 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-text);
  margin-top: var(--space-8);
  margin-bottom: var(--space-3);
  scroll-margin-top: calc(var(--topbar-h) + 20px);
}
.docs-content h4 {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-text);
  margin-top: var(--space-6);
  margin-bottom: var(--space-2);
  scroll-margin-top: calc(var(--topbar-h) + 20px);
}
.docs-content p { color: var(--color-text); margin-bottom: var(--space-4); line-height: 1.7; }
.docs-content ul,
.docs-content ol { padding-left: var(--space-6); margin-bottom: var(--space-4); }
.docs-content li { margin-bottom: var(--space-2); line-height: 1.7; }
.docs-content blockquote {
  border-left: 3px solid var(--color-border-strong);
  padding: var(--space-3) var(--space-5);
  margin: var(--space-4) 0 var(--space-6);
  color: var(--color-text-muted);
  font-style: italic;
}
.docs-content blockquote p { margin: 0; color: var(--color-text-muted); }
.docs-content code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 1px 6px;
  color: var(--color-text);
}
.docs-content .codehilite {
  background: var(--docs-bg-code);
  color: var(--docs-code-text);
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  line-height: 1.65;
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-md);
  margin: var(--space-4) 0 var(--space-6);
  overflow-x: auto;
  tab-size: 2;
}
.docs-content .codehilite pre {
  background: none;
  margin: 0;
  padding: 0;
}
.docs-content .codehilite code {
  background: none;
  border: none;
  border-radius: 0;
  padding: 0;
  font-size: inherit;
  color: inherit;
}
.docs-content table {
  display: block;
  overflow-x: auto;
  max-width: 100%;
  border-collapse: collapse;
  margin: var(--space-4) 0 var(--space-6);
  font-size: var(--font-size-sm);
}
.docs-content th,
.docs-content td {
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--color-border);
  text-align: left;
  vertical-align: top;
}
.docs-content thead th {
  background: var(--color-bg);
  font-weight: 600;
  white-space: nowrap;
}
.heading-anchor {
  font-size: 0.75em;
  opacity: 0;
  color: var(--color-text-muted);
  font-weight: 400;
  text-decoration: none;
  transition: opacity var(--transition);
  flex-shrink: 0;
}
.docs-content h2:hover .heading-anchor,
.docs-content h3:hover .heading-anchor { opacity: 1; }

.callout {
  display: flex;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-6);
  border-left: 3px solid;
}
.callout-note { background: var(--color-accent-soft); border-color: var(--color-accent); }
.callout-warning { background: var(--color-warning-bg); border-color: var(--color-warning); }
.callout-icon { flex-shrink: 0; margin-top: 2px; }
.callout-icon svg { display: block; }
.callout-note .callout-icon { color: var(--color-accent); }
.callout-warning .callout-icon { color: var(--color-warning); }
.callout-title {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 700;
  margin-bottom: var(--space-1);
}
.callout-note .callout-title { color: var(--color-accent); }
.callout-warning .callout-title { color: var(--color-warning); }
.callout-text { font-size: var(--font-size-sm); line-height: 1.6; color: var(--color-text-muted); }
.callout-text a { color: var(--color-link); }
.callout-text p { margin: 0; }