:root {
  --bg: #0b0c0f;
  --panel: #10131a;
  --panel-2: #0f1218;
  --text: rgba(255, 255, 255, 0.92);
  --muted: rgba(255, 255, 255, 0.7);
  --muted-2: rgba(255, 255, 255, 0.55);
  --border: rgba(255, 255, 255, 0.08);
  --accent: #ff4d00;
  --accent-2: rgba(255, 77, 0, 0.18);
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);

  --font-sans: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji";
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;

  --radius: 10px;
  --content-max: 820px;
  --sidebar-width: 260px;
  --rightbar-width: 260px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
}

a {
  color: inherit;
  text-decoration: none;
}

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

code {
  font-family: var(--font-mono);
  font-size: 0.95em;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border);
  padding: 2px 6px;
  border-radius: 8px;
}

details.code-snippet {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.02);
  overflow: hidden;
  margin: 12px 0;
}

details.code-snippet > summary {
  cursor: pointer;
  user-select: none;
  padding: 10px 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.6px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.03);
  border-bottom: 1px solid var(--border);
}

details.code-snippet > summary:hover {
  color: var(--text);
  background: rgba(255, 77, 0, 0.08);
}

details.code-snippet[open] > summary {
  color: var(--text);
}

details.code-snippet > summary::marker {
  color: rgba(255, 255, 255, 0.45);
}

details.code-snippet pre {
  margin: 0;
  padding: 12px 12px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  background: rgba(0, 0, 0, 0.35);
}

details.code-snippet pre code {
  background: transparent;
  border: 0;
  padding: 0;
  border-radius: 0;
  font-size: 12px;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.92);
}

/* Top nav injected by nav-template.js */
#main-nav {
  background: transparent !important;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 20px 0;
  border-bottom: none !important;
  transition: all 0.3s ease;
}

#main-nav.scrolled {
  background: rgba(10, 10, 10, 0.9) !important;
  backdrop-filter: blur(10px);
  padding: 15px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05) !important;
}

#main-nav .nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 40px;
  max-width: 100%;
}

#main-nav .logo {
  font-family: var(--font-mono) !important;
  font-weight: 700;
  font-size: 1.2rem;
  letter-spacing: -1px;
  color: #ffffff !important;
  display: flex;
  align-items: center;
  gap: 10px;
}

#main-nav .logo img {
  filter: invert(1);
  height: 30px !important;
}

#main-nav .nav-links {
  display: flex;
  gap: 30px;
  align-items: center;
}

#main-nav .nav-links li {
  position: relative;
}

#main-nav .nav-links a {
  display: flex;
  flex-direction: column;
  align-items: center;
  line-height: 1.2;
  color: rgba(255, 255, 255, 0.7) !important;
}

#main-nav .nav-links a:hover .en,
#main-nav .nav-links a:hover .zh,
#main-nav .nav-links a.active .en,
#main-nav .nav-links a.active .zh {
  color: var(--accent) !important;
}

#main-nav .nav-links .en {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 700;
}

#main-nav .nav-links .zh {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  color: rgba(255, 255, 255, 0.5);
  margin-top: 2px;
  transition: color 0.3s ease;
}

#main-nav .nav-cta {
  background: transparent !important;
  border: 1px solid var(--accent);
  color: var(--accent) !important;
  padding: 8px 20px;
  border-radius: 0 !important;
  transition: all 0.3s ease;
}

#main-nav .nav-cta .en {
  color: var(--accent) !important;
}

#main-nav .nav-cta:hover {
  background: var(--accent) !important;
  color: #ffffff !important;
}

#main-nav .nav-cta:hover .en,
#main-nav .nav-cta:hover .zh {
  color: #ffffff !important;
}

#main-nav .theme-toggle {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #ffffff;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  margin-left: 15px;
  transition: all 0.3s ease;
}

#main-nav .theme-toggle:hover {
  background: #ffffff;
  color: #0a0a0a;
}

#main-nav .mobile-menu {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 1001;
  padding: 10px;
  margin-left: auto;
  margin-right: -10px;
}

#main-nav .mobile-menu span {
  display: block;
  width: 30px;
  height: 2px;
  background-color: #ffffff !important;
  transition: all 0.3s ease;
}

#main-nav .mobile-menu.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 6px);
}

#main-nav .mobile-menu.active span:nth-child(2) {
  opacity: 0;
}

#main-nav .mobile-menu.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -6px);
}

#mobile-nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background: #0a0a0a;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: all 0.4s ease;
}

#mobile-nav.active {
  opacity: 1;
  visibility: visible;
}

#mobile-nav ul {
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 24px;
  padding: 0 20px;
  width: 100%;
}

#mobile-nav a {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
}

#mobile-nav .en {
  font-size: 1.5rem;
  color: #ffffff;
  font-family: var(--font-mono);
  text-transform: uppercase;
}

#mobile-nav .zh {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.5);
  font-family: var(--font-sans);
}

@media (max-width: 992px) {
  #main-nav .nav-links { display: none; }
  #main-nav .mobile-menu { display: flex; }
  #main-nav .nav-container { padding: 0 20px; }
}

/* Docs layout */
.docs-shell {
  display: grid;
  grid-template-columns: var(--sidebar-width) minmax(0, var(--content-max)) var(--rightbar-width);
  justify-content: center;
  gap: 18px;
  padding: 110px 18px 80px;
}

.docs-sidebar {
  position: sticky;
  top: 110px;
  align-self: start;
}

.docs-rightbar {
  position: sticky;
  top: 110px;
  align-self: start;
}

.docs-panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.docs-panel-inner {
  padding: 14px 14px;
}

.docs-title {
  margin: 0;
  font-size: 28px;
  letter-spacing: -0.02em;
}

.docs-subtitle {
  margin: 8px 0 0;
  color: var(--muted);
}

.docs-divider {
  height: 1px;
  background: var(--border);
  margin: 14px 0;
}

.docs-nav {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 4px;
}

.docs-nav a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 10px;
  border-radius: 10px;
  border: 1px solid transparent;
  color: var(--muted);
}

.docs-nav a:hover {
  border-color: var(--border);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
}

.docs-nav .nav-label {
  display: inline-flex;
  gap: 10px;
  align-items: center;
}

.docs-nav .nav-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
}

.docs-nav a:hover .nav-dot { background: var(--accent); }

.docs-nav .nav-note {
  font-family: var(--font-mono);
  font-size: 11px;
  color: rgba(255, 255, 255, 0.35);
}

.docs-content {
  min-width: 0;
}

.docs-header {
  padding: 18px 18px;
}

.docs-header .actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 14px;
}

.docs-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
}

.docs-btn.primary {
  border-color: rgba(255, 77, 0, 0.55);
  background: linear-gradient(180deg, rgba(255, 77, 0, 0.22), rgba(255, 77, 0, 0.08));
}

.docs-btn:hover {
  border-color: rgba(255, 255, 255, 0.18);
}

.docs-btn.primary:hover {
  border-color: rgba(255, 77, 0, 0.8);
}

.docs-article {
  padding: 18px 18px 6px;
}

.docs-article h2 {
  margin: 24px 0 10px;
  font-size: 22px;
  letter-spacing: -0.01em;
}

.docs-article h3 {
  margin: 18px 0 10px;
  font-size: 16px;
  color: var(--text);
}

.docs-article p {
  margin: 10px 0;
  color: var(--muted);
}

.docs-article ul {
  margin: 10px 0 10px 18px;
  padding: 0;
  color: var(--muted);
}

.docs-article li { margin: 6px 0; }

.table-wrap {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: 12px 0;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.02);
}

.docs-article table {
  width: 100%;
  border-collapse: collapse;
  min-width: 720px;
}

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

.docs-article th {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.3px;
  color: rgba(255, 255, 255, 0.9);
  background: rgba(255, 255, 255, 0.04);
}

.docs-article td {
  color: var(--muted);
  font-size: 14px;
}

.docs-article tbody tr:nth-child(even) td {
  background: rgba(255, 255, 255, 0.02);
}

.docs-article tbody tr:hover td {
  background: rgba(255, 255, 255, 0.03);
}

.callout {
  margin: 12px 0;
  border: 1px solid rgba(255, 77, 0, 0.35);
  background: rgba(255, 77, 0, 0.08);
  border-radius: 12px;
  padding: 10px 12px;
  color: rgba(255, 255, 255, 0.85);
}

.subanchors {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 10px 0 14px;
}

.subanchors a {
  padding: 8px 10px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.02);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 12px;
}

.subanchors a:hover {
  border-color: rgba(255, 77, 0, 0.55);
}

.onpage-title {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--muted-2);
  margin: 2px 0 10px;
}

.onpage {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 6px;
}

.onpage a {
  display: block;
  padding: 8px 10px;
  border-radius: 10px;
  color: var(--muted);
}

.onpage a:hover {
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
}

/* Footer injected by nav-template.js */
.footer-modern {
  border-top: 1px solid var(--border);
  background: var(--panel-2);
}

.footer-modern .container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 34px 18px;
}

.footer-modern .footer-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

@media (max-width: 980px) {
  .footer-modern .footer-grid {
    grid-template-columns: 1fr;
  }
}

.footer-modern .footer-title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  letter-spacing: 1px;
}

.footer-modern .footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 8px;
}

.footer-modern .footer-links a {
  color: var(--muted);
}

.footer-modern .footer-links a:hover { color: var(--text); }

.footer-modern .footer-bottom {
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
  color: var(--muted-2);
}

@media (max-width: 1100px) {
  .docs-shell {
    grid-template-columns: 1fr;
    gap: 16px;
    padding: 18px 14px 70px;
  }
  .docs-sidebar {
    position: static;
  }

  .docs-rightbar {
    position: static;
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}