:root {
  color-scheme: light;
  --bg: #f6f7f8;
  --panel: #ffffff;
  --panel-soft: #f9fafb;
  --text: #171717;
  --muted: #6b7280;
  --border: #e5e7eb;
  --border-strong: #d1d5db;
  --accent: #0f766e;
  --accent-soft: #e6fffb;
  --accent-text: #0f5f59;
  --code-bg: #0b1220;
  --code-text: #e5e7eb;
  --shadow: 0 18px 45px rgba(15, 23, 42, 0.08);
  --topbar-height: 64px;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    "Microsoft YaHei", sans-serif;
}

[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0f1115;
  --panel: #171a21;
  --panel-soft: #1d222b;
  --text: #f4f4f5;
  --muted: #a1a1aa;
  --border: #2c313a;
  --border-strong: #3f4652;
  --accent: #2dd4bf;
  --accent-soft: rgba(45, 212, 191, 0.12);
  --accent-text: #7dd3c7;
  --code-bg: #05070d;
  --code-text: #e5e7eb;
  --shadow: 0 18px 45px rgba(0, 0, 0, 0.28);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
  line-height: 1.7;
}

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

button,
input,
select,
textarea {
  font: inherit;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  height: var(--topbar-height);
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--panel) 92%, transparent);
  backdrop-filter: blur(18px);
}

.topbar-inner {
  display: flex;
  align-items: center;
  gap: 18px;
  height: 100%;
  padding: 0 28px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 190px;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: #111827;
  color: #fff;
  font-weight: 800;
}

.brand strong,
.brand small {
  display: block;
}

.brand small {
  margin-top: -2px;
  color: var(--muted);
  font-size: 12px;
}

.topnav {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}

.topnav a,
.plain-button,
.theme-button,
.search-button {
  border: 1px solid transparent;
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  transition:
    background 0.18s ease,
    border-color 0.18s ease,
    color 0.18s ease;
}

.topnav a {
  padding: 7px 12px;
  font-weight: 600;
}

.topnav a:hover,
.plain-button:hover,
.theme-button:hover,
.search-button:hover {
  border-color: var(--border);
  background: var(--panel-soft);
  color: var(--text);
}

.search-button {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 34px;
  min-width: 210px;
  padding: 8px 10px 8px 14px;
  border-color: var(--border);
  background: var(--panel);
}

kbd {
  border: 1px solid var(--border-strong);
  border-radius: 6px;
  padding: 1px 6px;
  color: var(--muted);
  font-size: 12px;
}

.theme-button {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-color: var(--border);
  background: var(--panel);
  font-weight: 700;
}

.app-shell {
  display: grid;
  grid-template-columns: 286px minmax(0, 1fr) 238px;
  gap: 0;
  max-width: 1540px;
  margin: 0 auto;
}

.sidebar,
.toc {
  position: sticky;
  top: var(--topbar-height);
  height: calc(100vh - var(--topbar-height));
  overflow-y: auto;
}

.sidebar {
  padding: 24px 18px 48px 26px;
  border-right: 1px solid var(--border);
}

.sidebar-group {
  margin-bottom: 24px;
}

.sidebar-title {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.sidebar-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  width: 100%;
  margin: 2px 0;
  padding: 8px 10px;
  border-radius: 9px;
  color: var(--muted);
  font-weight: 600;
}

.sidebar-link:hover,
.sidebar-link.active {
  background: var(--accent-soft);
  color: var(--accent-text);
}

.content-shell {
  min-width: 0;
  padding: 42px 48px 88px;
}

.doc-content {
  max-width: 860px;
  margin: 0 auto;
}

.doc-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
  color: var(--accent-text);
  font-size: 13px;
  font-weight: 700;
}

.doc-content h1 {
  margin: 0 0 12px;
  font-size: clamp(32px, 5vw, 48px);
  line-height: 1.12;
  letter-spacing: 0;
}

.doc-lead {
  margin: 0 0 26px;
  max-width: 760px;
  color: var(--muted);
  font-size: 17px;
}

.doc-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0 0 30px;
}

.primary-link,
.secondary-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  border-radius: 999px;
  padding: 7px 15px;
  font-weight: 700;
}

.primary-link {
  background: #111827;
  color: #fff;
}

.secondary-link {
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
}

.doc-content h2 {
  margin: 42px 0 14px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
  font-size: 24px;
  line-height: 1.3;
}

.doc-content h3 {
  margin: 28px 0 10px;
  font-size: 18px;
}

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

.doc-content strong,
.doc-content th {
  color: var(--text);
}

.callout,
.card-grid,
.api-card,
.table-wrap {
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--panel);
}

.callout {
  margin: 20px 0;
  padding: 14px 16px;
}

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

.card-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  background: var(--border);
}

.api-card {
  border: 0;
  border-radius: 0;
  padding: 18px;
}

.api-card h3 {
  margin-top: 0;
}

.badge-row,
.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag,
.method {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 2px 9px;
  font-size: 12px;
  font-weight: 700;
}

.tag {
  border: 1px solid var(--border);
  background: var(--panel-soft);
  color: var(--muted);
}

.method {
  background: var(--accent-soft);
  color: var(--accent-text);
}

.table-wrap {
  overflow-x: auto;
  margin: 18px 0;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 680px;
}

th,
td {
  border-bottom: 1px solid var(--border);
  padding: 12px 14px;
  text-align: left;
  vertical-align: top;
}

tbody tr:last-child td {
  border-bottom: 0;
}

code {
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--panel-soft);
  padding: 1px 5px;
  color: var(--accent-text);
  font-family: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;
  font-size: 0.92em;
}

pre {
  position: relative;
  overflow-x: auto;
  margin: 18px 0;
  border-radius: 14px;
  background: var(--code-bg);
  color: var(--code-text);
  box-shadow: var(--shadow);
}

pre code {
  display: block;
  border: 0;
  background: transparent;
  padding: 18px;
  color: inherit;
  line-height: 1.65;
}

.copy-code {
  position: absolute;
  top: 10px;
  right: 10px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  cursor: pointer;
  font-size: 12px;
  padding: 4px 8px;
}

.toc {
  padding: 36px 24px 48px 8px;
  color: var(--muted);
}

.toc h2 {
  margin: 0 0 12px;
  color: var(--text);
  font-size: 13px;
}

.toc a {
  display: block;
  border-left: 2px solid var(--border);
  padding: 5px 0 5px 12px;
  color: var(--muted);
  font-size: 13px;
}

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

.toc .toc-h3 {
  padding-left: 22px;
}

.search-overlay {
  position: fixed;
  inset: 0;
  z-index: 60;
  display: grid;
  place-items: start center;
  padding-top: 8vh;
  background: rgba(15, 23, 42, 0.35);
}

.search-overlay[hidden] {
  display: none;
}

.search-panel {
  width: min(720px, calc(100vw - 32px));
  max-height: 78vh;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.search-panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 18px 8px;
}

.search-panel h2 {
  margin: 0;
  font-size: 18px;
}

.plain-button {
  padding: 6px 10px;
}

#searchInput {
  width: calc(100% - 36px);
  margin: 8px 18px 12px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--panel-soft);
  color: var(--text);
  padding: 12px 14px;
  outline: none;
}

.search-results {
  max-height: 54vh;
  overflow-y: auto;
  border-top: 1px solid var(--border);
}

.search-result {
  display: block;
  border-bottom: 1px solid var(--border);
  padding: 14px 18px;
}

.search-result:hover {
  background: var(--panel-soft);
}

.search-result strong {
  display: block;
}

.search-result span {
  display: block;
  margin-top: 3px;
  color: var(--muted);
  font-size: 13px;
}

.icon-button {
  display: inline-grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--panel);
  cursor: pointer;
}

.icon-button span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 2px 0;
  background: var(--text);
}

.mobile-only {
  display: none;
}

@media (max-width: 1180px) {
  .app-shell {
    grid-template-columns: 260px minmax(0, 1fr);
  }

  .toc {
    display: none;
  }
}

@media (max-width: 860px) {
  .topbar-inner {
    gap: 10px;
    padding: 0 14px;
  }

  .mobile-only {
    display: inline-grid;
  }

  .brand {
    min-width: 0;
  }

  .brand small,
  .topnav {
    display: none;
  }

  .search-button {
    min-width: 0;
    width: 42px;
    height: 38px;
    justify-content: center;
    padding: 0;
  }

  .search-button span {
    display: none;
  }

  .search-button kbd {
    display: none;
  }

  .app-shell {
    display: block;
  }

  .sidebar {
    position: fixed;
    top: var(--topbar-height);
    left: 0;
    z-index: 40;
    width: min(320px, 86vw);
    transform: translateX(-105%);
    transition: transform 0.2s ease;
    background: var(--panel);
    box-shadow: var(--shadow);
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .content-shell {
    padding: 30px 18px 68px;
  }

  .card-grid {
    grid-template-columns: 1fr;
  }

  .doc-content h1 {
    font-size: 34px;
  }
}